^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * libata-eh.c - libata error handling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright 2006 Tejun Heo <htejun@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * libata documentation is available via 'make {ps|pdf}docs',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * as Documentation/driver-api/libata.rst
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Hardware documentation available from http://www.t13.org/ and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * http://www.sata-io.org/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <scsi/scsi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <scsi/scsi_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <scsi/scsi_eh.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <scsi/scsi_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <scsi/scsi_cmnd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <scsi/scsi_dbg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "../scsi/scsi_transport_api.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/libata.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <trace/events/libata.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include "libata.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /* speed down verdicts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) ATA_EH_SPDN_NCQ_OFF = (1 << 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) ATA_EH_SPDN_SPEED_DOWN = (1 << 1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) ATA_EH_SPDN_FALLBACK_TO_PIO = (1 << 2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) ATA_EH_SPDN_KEEP_ERRORS = (1 << 3),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /* error flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) ATA_EFLAG_IS_IO = (1 << 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) ATA_EFLAG_DUBIOUS_XFER = (1 << 1),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) ATA_EFLAG_OLD_ER = (1 << 31),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) /* error categories */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) ATA_ECAT_NONE = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) ATA_ECAT_ATA_BUS = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) ATA_ECAT_TOUT_HSM = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) ATA_ECAT_UNK_DEV = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) ATA_ECAT_DUBIOUS_NONE = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) ATA_ECAT_DUBIOUS_ATA_BUS = 5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) ATA_ECAT_DUBIOUS_TOUT_HSM = 6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) ATA_ECAT_DUBIOUS_UNK_DEV = 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) ATA_ECAT_NR = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) ATA_EH_CMD_DFL_TIMEOUT = 5000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /* always put at least this amount of time between resets */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) ATA_EH_RESET_COOL_DOWN = 5000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* Waiting in ->prereset can never be reliable. It's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * sometimes nice to wait there but it can't be depended upon;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * otherwise, we wouldn't be resetting. Just give it enough
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * time for most drives to spin up.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) ATA_EH_PRERESET_TIMEOUT = 10000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) ATA_EH_FASTDRAIN_INTERVAL = 3000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) ATA_EH_UA_TRIES = 5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /* probe speed down parameters, see ata_eh_schedule_probe() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) ATA_EH_PROBE_TRIAL_INTERVAL = 60000, /* 1 min */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) ATA_EH_PROBE_TRIALS = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /* The following table determines how we sequence resets. Each entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * represents timeout for that try. The first try can be soft or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * hardreset. All others are hardreset if available. In most cases
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * the first reset w/ 10sec timeout should succeed. Following entries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * are mostly for error handling, hotplug and those outlier devices that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * take an exceptionally long time to recover from reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) static const unsigned long ata_eh_reset_timeouts[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 10000, /* most drives spin up by 10sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) 10000, /* > 99% working drives spin up before 20sec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) 35000, /* give > 30 secs of idleness for outlier devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) 5000, /* and sweet one last chance */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) ULONG_MAX, /* > 1 min has elapsed, give up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static const unsigned long ata_eh_identify_timeouts[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) 5000, /* covers > 99% of successes and not too boring on failures */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) 10000, /* combined time till here is enough even for media access */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) 30000, /* for true idiots */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) ULONG_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) static const unsigned long ata_eh_revalidate_timeouts[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) 15000, /* Some drives are slow to read log pages when waking-up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) 15000, /* combined time till here is enough even for media access */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) ULONG_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) static const unsigned long ata_eh_flush_timeouts[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 15000, /* be generous with flush */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 15000, /* ditto */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 30000, /* and even more generous */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) ULONG_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static const unsigned long ata_eh_other_timeouts[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 5000, /* same rationale as identify timeout */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 10000, /* ditto */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /* but no merciful 30sec for other commands, it just isn't worth it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) ULONG_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) struct ata_eh_cmd_timeout_ent {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) const u8 *commands;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) const unsigned long *timeouts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) /* The following table determines timeouts to use for EH internal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * commands. Each table entry is a command class and matches the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * commands the entry applies to and the timeout table to use.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) * On the retry after a command timed out, the next timeout value from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * the table is used. If the table doesn't contain further entries,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * the last value is used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * ehc->cmd_timeout_idx keeps track of which timeout to use per
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * command class, so if SET_FEATURES times out on the first try, the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * next try will use the second timeout value only for that class.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) #define CMDS(cmds...) (const u8 []){ cmds, 0 }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static const struct ata_eh_cmd_timeout_ent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) ata_eh_cmd_timeout_table[ATA_EH_CMD_TIMEOUT_TABLE_SIZE] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) { .commands = CMDS(ATA_CMD_ID_ATA, ATA_CMD_ID_ATAPI),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) .timeouts = ata_eh_identify_timeouts, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) { .commands = CMDS(ATA_CMD_READ_LOG_EXT, ATA_CMD_READ_LOG_DMA_EXT),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) .timeouts = ata_eh_revalidate_timeouts, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) { .commands = CMDS(ATA_CMD_READ_NATIVE_MAX, ATA_CMD_READ_NATIVE_MAX_EXT),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) .timeouts = ata_eh_other_timeouts, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) { .commands = CMDS(ATA_CMD_SET_MAX, ATA_CMD_SET_MAX_EXT),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) .timeouts = ata_eh_other_timeouts, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) { .commands = CMDS(ATA_CMD_SET_FEATURES),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) .timeouts = ata_eh_other_timeouts, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) { .commands = CMDS(ATA_CMD_INIT_DEV_PARAMS),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) .timeouts = ata_eh_other_timeouts, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) { .commands = CMDS(ATA_CMD_FLUSH, ATA_CMD_FLUSH_EXT),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) .timeouts = ata_eh_flush_timeouts },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) #undef CMDS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) static void __ata_port_freeze(struct ata_port *ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static void ata_eh_handle_port_suspend(struct ata_port *ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static void ata_eh_handle_port_resume(struct ata_port *ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) #else /* CONFIG_PM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) static void ata_eh_handle_port_suspend(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static void ata_eh_handle_port_resume(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) #endif /* CONFIG_PM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static __printf(2, 0) void __ata_ehi_pushv_desc(struct ata_eh_info *ehi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) const char *fmt, va_list args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) ehi->desc_len += vscnprintf(ehi->desc + ehi->desc_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) ATA_EH_DESC_LEN - ehi->desc_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) fmt, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * __ata_ehi_push_desc - push error description without adding separator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * @ehi: target EHI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * @fmt: printf format string
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * Format string according to @fmt and append it to @ehi->desc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * spin_lock_irqsave(host lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) va_list args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) va_start(args, fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) __ata_ehi_pushv_desc(ehi, fmt, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) va_end(args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) EXPORT_SYMBOL_GPL(__ata_ehi_push_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * ata_ehi_push_desc - push error description with separator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * @ehi: target EHI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * @fmt: printf format string
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) * Format string according to @fmt and append it to @ehi->desc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) * If @ehi->desc is not empty, ", " is added in-between.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * spin_lock_irqsave(host lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) va_list args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) if (ehi->desc_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) __ata_ehi_push_desc(ehi, ", ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) va_start(args, fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) __ata_ehi_pushv_desc(ehi, fmt, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) va_end(args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) EXPORT_SYMBOL_GPL(ata_ehi_push_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) * ata_ehi_clear_desc - clean error description
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) * @ehi: target EHI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * Clear @ehi->desc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * spin_lock_irqsave(host lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) void ata_ehi_clear_desc(struct ata_eh_info *ehi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) ehi->desc[0] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) ehi->desc_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) EXPORT_SYMBOL_GPL(ata_ehi_clear_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) * ata_port_desc - append port description
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) * @ap: target ATA port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) * @fmt: printf format string
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * Format string according to @fmt and append it to port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) * description. If port description is not empty, " " is added
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) * in-between. This function is to be used while initializing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) * ata_host. The description is printed on host registration.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) * None.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) void ata_port_desc(struct ata_port *ap, const char *fmt, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) va_list args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) WARN_ON(!(ap->pflags & ATA_PFLAG_INITIALIZING));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) if (ap->link.eh_info.desc_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) __ata_ehi_push_desc(&ap->link.eh_info, " ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) va_start(args, fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) __ata_ehi_pushv_desc(&ap->link.eh_info, fmt, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) va_end(args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) EXPORT_SYMBOL_GPL(ata_port_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) #ifdef CONFIG_PCI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * ata_port_pbar_desc - append PCI BAR description
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) * @ap: target ATA port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * @bar: target PCI BAR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) * @offset: offset into PCI BAR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) * @name: name of the area
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * If @offset is negative, this function formats a string which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) * contains the name, address, size and type of the BAR and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) * appends it to the port description. If @offset is zero or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) * positive, only name and offsetted address is appended.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) * None.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) struct pci_dev *pdev = to_pci_dev(ap->host->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) char *type = "";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) unsigned long long start, len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) if (pci_resource_flags(pdev, bar) & IORESOURCE_MEM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) type = "m";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) else if (pci_resource_flags(pdev, bar) & IORESOURCE_IO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) type = "i";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) start = (unsigned long long)pci_resource_start(pdev, bar);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) len = (unsigned long long)pci_resource_len(pdev, bar);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) if (offset < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) ata_port_desc(ap, "%s %s%llu@0x%llx", name, type, len, start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) ata_port_desc(ap, "%s 0x%llx", name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) start + (unsigned long long)offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) EXPORT_SYMBOL_GPL(ata_port_pbar_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) #endif /* CONFIG_PCI */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) static int ata_lookup_timeout_table(u8 cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) for (i = 0; i < ATA_EH_CMD_TIMEOUT_TABLE_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) const u8 *cur;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) for (cur = ata_eh_cmd_timeout_table[i].commands; *cur; cur++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) if (*cur == cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) return i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) * ata_internal_cmd_timeout - determine timeout for an internal command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) * @dev: target device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) * @cmd: internal command to be issued
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) * Determine timeout for internal command @cmd for @dev.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) * EH context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) * Determined timeout.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) unsigned long ata_internal_cmd_timeout(struct ata_device *dev, u8 cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) struct ata_eh_context *ehc = &dev->link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) int ent = ata_lookup_timeout_table(cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) int idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) if (ent < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) return ATA_EH_CMD_DFL_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) idx = ehc->cmd_timeout_idx[dev->devno][ent];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) return ata_eh_cmd_timeout_table[ent].timeouts[idx];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) * ata_internal_cmd_timed_out - notification for internal command timeout
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) * @dev: target device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) * @cmd: internal command which timed out
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) * Notify EH that internal command @cmd for @dev timed out. This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) * function should be called only for commands whose timeouts are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) * determined using ata_internal_cmd_timeout().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) * EH context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) void ata_internal_cmd_timed_out(struct ata_device *dev, u8 cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) struct ata_eh_context *ehc = &dev->link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) int ent = ata_lookup_timeout_table(cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) int idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) if (ent < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) idx = ehc->cmd_timeout_idx[dev->devno][ent];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) if (ata_eh_cmd_timeout_table[ent].timeouts[idx + 1] != ULONG_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) ehc->cmd_timeout_idx[dev->devno][ent]++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) static void ata_ering_record(struct ata_ering *ering, unsigned int eflags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) unsigned int err_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) struct ata_ering_entry *ent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) WARN_ON(!err_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) ering->cursor++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) ering->cursor %= ATA_ERING_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) ent = &ering->ring[ering->cursor];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) ent->eflags = eflags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) ent->err_mask = err_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) ent->timestamp = get_jiffies_64();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) static struct ata_ering_entry *ata_ering_top(struct ata_ering *ering)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) struct ata_ering_entry *ent = &ering->ring[ering->cursor];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if (ent->err_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) return ent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) int ata_ering_map(struct ata_ering *ering,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) int (*map_fn)(struct ata_ering_entry *, void *),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) int idx, rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) struct ata_ering_entry *ent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) idx = ering->cursor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) ent = &ering->ring[idx];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) if (!ent->err_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) rc = map_fn(ent, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) idx = (idx - 1 + ATA_ERING_SIZE) % ATA_ERING_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) } while (idx != ering->cursor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) static int ata_ering_clear_cb(struct ata_ering_entry *ent, void *void_arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) ent->eflags |= ATA_EFLAG_OLD_ER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) static void ata_ering_clear(struct ata_ering *ering)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) ata_ering_map(ering, ata_ering_clear_cb, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) static unsigned int ata_eh_dev_action(struct ata_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) struct ata_eh_context *ehc = &dev->link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) return ehc->i.action | ehc->i.dev_action[dev->devno];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) static void ata_eh_clear_action(struct ata_link *link, struct ata_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) struct ata_eh_info *ehi, unsigned int action)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) struct ata_device *tdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) if (!dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) ehi->action &= ~action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) ata_for_each_dev(tdev, link, ALL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) ehi->dev_action[tdev->devno] &= ~action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) /* doesn't make sense for port-wide EH actions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) WARN_ON(!(action & ATA_EH_PERDEV_MASK));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) /* break ehi->action into ehi->dev_action */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if (ehi->action & action) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) ata_for_each_dev(tdev, link, ALL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) ehi->dev_action[tdev->devno] |=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) ehi->action & action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) ehi->action &= ~action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) /* turn off the specified per-dev action */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) ehi->dev_action[dev->devno] &= ~action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) * ata_eh_acquire - acquire EH ownership
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) * @ap: ATA port to acquire EH ownership for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) * Acquire EH ownership for @ap. This is the basic exclusion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) * mechanism for ports sharing a host. Only one port hanging off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) * the same host can claim the ownership of EH.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) * EH context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) void ata_eh_acquire(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) mutex_lock(&ap->host->eh_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) WARN_ON_ONCE(ap->host->eh_owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) ap->host->eh_owner = current;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) * ata_eh_release - release EH ownership
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) * @ap: ATA port to release EH ownership for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) * Release EH ownership for @ap if the caller. The caller must
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) * have acquired EH ownership using ata_eh_acquire() previously.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) * EH context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) void ata_eh_release(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) WARN_ON_ONCE(ap->host->eh_owner != current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) ap->host->eh_owner = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) mutex_unlock(&ap->host->eh_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) static void ata_eh_unload(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) struct ata_link *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) struct ata_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) /* Restore SControl IPM and SPD for the next driver and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) * disable attached devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) ata_for_each_link(link, ap, PMP_FIRST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) sata_scr_write(link, SCR_CONTROL, link->saved_scontrol & 0xff0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) ata_for_each_dev(dev, link, ALL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) ata_dev_disable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) /* freeze and set UNLOADED */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) ata_port_freeze(ap); /* won't be thawed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) ap->pflags &= ~ATA_PFLAG_EH_PENDING; /* clear pending from freeze */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) ap->pflags |= ATA_PFLAG_UNLOADED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) * ata_scsi_error - SCSI layer error handler callback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) * @host: SCSI host on which error occurred
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) * Handles SCSI-layer-thrown error events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) * Inherited from SCSI layer (none, can sleep)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) * Zero.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) void ata_scsi_error(struct Scsi_Host *host)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) struct ata_port *ap = ata_shost_to_port(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) LIST_HEAD(eh_work_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) DPRINTK("ENTER\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) spin_lock_irqsave(host->host_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) list_splice_init(&host->eh_cmd_q, &eh_work_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) spin_unlock_irqrestore(host->host_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) ata_scsi_cmd_error_handler(host, ap, &eh_work_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) /* If we timed raced normal completion and there is nothing to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) recover nr_timedout == 0 why exactly are we doing error recovery ? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) ata_scsi_port_error_handler(host, ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) /* finish or retry handled scmd's and clean up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) WARN_ON(!list_empty(&eh_work_q));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) DPRINTK("EXIT\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) * ata_scsi_cmd_error_handler - error callback for a list of commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) * @host: scsi host containing the port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) * @ap: ATA port within the host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) * @eh_work_q: list of commands to process
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) * process the given list of commands and return those finished to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) * ap->eh_done_q. This function is the first part of the libata error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) * handler which processes a given list of failed commands.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) struct list_head *eh_work_q)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) /* make sure sff pio task is not running */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) ata_sff_flush_pio_task(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) /* synchronize with host lock and sort out timeouts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) /* For new EH, all qcs are finished in one of three ways -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) * normal completion, error completion, and SCSI timeout.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) * Both completions can race against SCSI timeout. When normal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) * completion wins, the qc never reaches EH. When error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) * completion wins, the qc has ATA_QCFLAG_FAILED set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) * When SCSI timeout wins, things are a bit more complex.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) * Normal or error completion can occur after the timeout but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) * before this point. In such cases, both types of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) * completions are honored. A scmd is determined to have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) * timed out iff its associated qc is active and not failed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) if (ap->ops->error_handler) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) struct scsi_cmnd *scmd, *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) int nr_timedout = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) /* This must occur under the ap->lock as we don't want
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) a polled recovery to race the real interrupt handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) The lost_interrupt handler checks for any completed but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) non-notified command and completes much like an IRQ handler.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) We then fall into the error recovery code which will treat
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) this as if normal completion won the race */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) if (ap->ops->lost_interrupt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) ap->ops->lost_interrupt(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) list_for_each_entry_safe(scmd, tmp, eh_work_q, eh_entry) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) struct ata_queued_cmd *qc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) ata_qc_for_each_raw(ap, qc, i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) if (qc->flags & ATA_QCFLAG_ACTIVE &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) qc->scsicmd == scmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) if (i < ATA_MAX_QUEUE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) /* the scmd has an associated qc */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) if (!(qc->flags & ATA_QCFLAG_FAILED)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) /* which hasn't failed yet, timeout */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) qc->err_mask |= AC_ERR_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) qc->flags |= ATA_QCFLAG_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) nr_timedout++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) /* Normal completion occurred after
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * SCSI timeout but before this point.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) * Successfully complete it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) scmd->retries = scmd->allowed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) scsi_eh_finish_cmd(scmd, &ap->eh_done_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) /* If we have timed out qcs. They belong to EH from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) * this point but the state of the controller is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) * unknown. Freeze the port to make sure the IRQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) * handler doesn't diddle with those qcs. This must
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) * be done atomically w.r.t. setting QCFLAG_FAILED.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) if (nr_timedout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) __ata_port_freeze(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) /* initialize eh_tries */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) ap->eh_tries = ATA_EH_MAX_TRIES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) EXPORT_SYMBOL(ata_scsi_cmd_error_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) * ata_scsi_port_error_handler - recover the port after the commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) * @host: SCSI host containing the port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) * @ap: the ATA port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) * Handle the recovery of the port @ap after all the commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) * have been recovered.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) /* invoke error handler */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) if (ap->ops->error_handler) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) struct ata_link *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) /* acquire EH ownership */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) ata_eh_acquire(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) repeat:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) /* kill fast drain timer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) del_timer_sync(&ap->fastdrain_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) /* process port resume request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) ata_eh_handle_port_resume(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) /* fetch & clear EH info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) ata_for_each_link(link, ap, HOST_FIRST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) struct ata_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) memset(&link->eh_context, 0, sizeof(link->eh_context));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) link->eh_context.i = link->eh_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) memset(&link->eh_info, 0, sizeof(link->eh_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) ata_for_each_dev(dev, link, ENABLED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) int devno = dev->devno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) ehc->saved_xfer_mode[devno] = dev->xfer_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) if (ata_ncq_enabled(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) ehc->saved_ncq_enabled |= 1 << devno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) ap->pflags |= ATA_PFLAG_EH_IN_PROGRESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) ap->pflags &= ~ATA_PFLAG_EH_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) ap->excl_link = NULL; /* don't maintain exclusion over EH */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) /* invoke EH, skip if unloading or suspended */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) if (!(ap->pflags & (ATA_PFLAG_UNLOADING | ATA_PFLAG_SUSPENDED)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) ap->ops->error_handler(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) /* if unloading, commence suicide */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) if ((ap->pflags & ATA_PFLAG_UNLOADING) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) !(ap->pflags & ATA_PFLAG_UNLOADED))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) ata_eh_unload(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) ata_eh_finish(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) /* process port suspend request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) ata_eh_handle_port_suspend(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) /* Exception might have happened after ->error_handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) * recovered the port but before this point. Repeat
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) * EH in such case.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) if (ap->pflags & ATA_PFLAG_EH_PENDING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) if (--ap->eh_tries) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) goto repeat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) ata_port_err(ap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) "EH pending after %d tries, giving up\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) ATA_EH_MAX_TRIES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) ap->pflags &= ~ATA_PFLAG_EH_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) /* this run is complete, make sure EH info is clear */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) ata_for_each_link(link, ap, HOST_FIRST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) memset(&link->eh_info, 0, sizeof(link->eh_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) /* end eh (clear host_eh_scheduled) while holding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) * ap->lock such that if exception occurs after this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) * point but before EH completion, SCSI midlayer will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) * re-initiate EH.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) ap->ops->end_eh(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) ata_eh_release(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) WARN_ON(ata_qc_from_tag(ap, ap->link.active_tag) == NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) ap->ops->eng_timeout(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) scsi_eh_flush_done_q(&ap->eh_done_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) /* clean up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) if (ap->pflags & ATA_PFLAG_LOADING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) ap->pflags &= ~ATA_PFLAG_LOADING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) else if ((ap->pflags & ATA_PFLAG_SCSI_HOTPLUG) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) !(ap->flags & ATA_FLAG_SAS_HOST))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) schedule_delayed_work(&ap->hotplug_task, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) if (ap->pflags & ATA_PFLAG_RECOVERED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) ata_port_info(ap, "EH complete\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) ap->pflags &= ~(ATA_PFLAG_SCSI_HOTPLUG | ATA_PFLAG_RECOVERED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) /* tell wait_eh that we're done */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) ap->pflags &= ~ATA_PFLAG_EH_IN_PROGRESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) wake_up_all(&ap->eh_wait_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) EXPORT_SYMBOL_GPL(ata_scsi_port_error_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) * ata_port_wait_eh - Wait for the currently pending EH to complete
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) * @ap: Port to wait EH for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) * Wait until the currently pending EH is complete.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) * Kernel thread context (may sleep).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) void ata_port_wait_eh(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) DEFINE_WAIT(wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) retry:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) while (ap->pflags & (ATA_PFLAG_EH_PENDING | ATA_PFLAG_EH_IN_PROGRESS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) prepare_to_wait(&ap->eh_wait_q, &wait, TASK_UNINTERRUPTIBLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) schedule();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) finish_wait(&ap->eh_wait_q, &wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) /* make sure SCSI EH is complete */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) if (scsi_host_in_recovery(ap->scsi_host)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) ata_msleep(ap, 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) goto retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) EXPORT_SYMBOL_GPL(ata_port_wait_eh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) static int ata_eh_nr_in_flight(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) struct ata_queued_cmd *qc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) unsigned int tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) int nr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) /* count only non-internal commands */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) ata_qc_for_each(ap, qc, tag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) if (qc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) nr++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) return nr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) void ata_eh_fastdrain_timerfn(struct timer_list *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) struct ata_port *ap = from_timer(ap, t, fastdrain_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) int cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) cnt = ata_eh_nr_in_flight(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) /* are we done? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) if (!cnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) if (cnt == ap->fastdrain_cnt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) struct ata_queued_cmd *qc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) unsigned int tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) /* No progress during the last interval, tag all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) * in-flight qcs as timed out and freeze the port.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) ata_qc_for_each(ap, qc, tag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) if (qc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) qc->err_mask |= AC_ERR_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) ata_port_freeze(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) /* some qcs have finished, give it another chance */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) ap->fastdrain_cnt = cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) ap->fastdrain_timer.expires =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) ata_deadline(jiffies, ATA_EH_FASTDRAIN_INTERVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) add_timer(&ap->fastdrain_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) * ata_eh_set_pending - set ATA_PFLAG_EH_PENDING and activate fast drain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) * @ap: target ATA port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) * @fastdrain: activate fast drain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) * Set ATA_PFLAG_EH_PENDING and activate fast drain if @fastdrain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) * is non-zero and EH wasn't pending before. Fast drain ensures
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) * that EH kicks in in timely manner.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) * spin_lock_irqsave(host lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) static void ata_eh_set_pending(struct ata_port *ap, int fastdrain)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) int cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) /* already scheduled? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) if (ap->pflags & ATA_PFLAG_EH_PENDING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) ap->pflags |= ATA_PFLAG_EH_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) if (!fastdrain)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) /* do we have in-flight qcs? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) cnt = ata_eh_nr_in_flight(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) if (!cnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) /* activate fast drain */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) ap->fastdrain_cnt = cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) ap->fastdrain_timer.expires =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) ata_deadline(jiffies, ATA_EH_FASTDRAIN_INTERVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) add_timer(&ap->fastdrain_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) * ata_qc_schedule_eh - schedule qc for error handling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) * @qc: command to schedule error handling for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) * Schedule error handling for @qc. EH will kick in as soon as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) * other commands are drained.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) * spin_lock_irqsave(host lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) void ata_qc_schedule_eh(struct ata_queued_cmd *qc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) struct ata_port *ap = qc->ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) WARN_ON(!ap->ops->error_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) qc->flags |= ATA_QCFLAG_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) ata_eh_set_pending(ap, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) /* The following will fail if timeout has already expired.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) * ata_scsi_error() takes care of such scmds on EH entry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) * Note that ATA_QCFLAG_FAILED is unconditionally set after
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) * this function completes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) blk_abort_request(qc->scsicmd->request);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) * ata_std_sched_eh - non-libsas ata_ports issue eh with this common routine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) * @ap: ATA port to schedule EH for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) * LOCKING: inherited from ata_port_schedule_eh
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) * spin_lock_irqsave(host lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) void ata_std_sched_eh(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) WARN_ON(!ap->ops->error_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) if (ap->pflags & ATA_PFLAG_INITIALIZING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) ata_eh_set_pending(ap, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) scsi_schedule_eh(ap->scsi_host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) DPRINTK("port EH scheduled\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) EXPORT_SYMBOL_GPL(ata_std_sched_eh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) * ata_std_end_eh - non-libsas ata_ports complete eh with this common routine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) * @ap: ATA port to end EH for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) * In the libata object model there is a 1:1 mapping of ata_port to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) * shost, so host fields can be directly manipulated under ap->lock, in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) * the libsas case we need to hold a lock at the ha->level to coordinate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) * these events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) * spin_lock_irqsave(host lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) void ata_std_end_eh(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) struct Scsi_Host *host = ap->scsi_host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) host->host_eh_scheduled = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) EXPORT_SYMBOL(ata_std_end_eh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) * ata_port_schedule_eh - schedule error handling without a qc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) * @ap: ATA port to schedule EH for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) * Schedule error handling for @ap. EH will kick in as soon as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) * all commands are drained.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) * spin_lock_irqsave(host lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) void ata_port_schedule_eh(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) /* see: ata_std_sched_eh, unless you know better */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) ap->ops->sched_eh(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) EXPORT_SYMBOL_GPL(ata_port_schedule_eh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) static int ata_do_link_abort(struct ata_port *ap, struct ata_link *link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) struct ata_queued_cmd *qc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) int tag, nr_aborted = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) WARN_ON(!ap->ops->error_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) /* we're gonna abort all commands, no need for fast drain */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) ata_eh_set_pending(ap, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) /* include internal tag in iteration */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) ata_qc_for_each_with_internal(ap, qc, tag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) if (qc && (!link || qc->dev->link == link)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) qc->flags |= ATA_QCFLAG_FAILED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) ata_qc_complete(qc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) nr_aborted++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) if (!nr_aborted)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) ata_port_schedule_eh(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) return nr_aborted;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) * ata_link_abort - abort all qc's on the link
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) * @link: ATA link to abort qc's for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) * Abort all active qc's active on @link and schedule EH.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) * spin_lock_irqsave(host lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) * Number of aborted qc's.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) int ata_link_abort(struct ata_link *link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) return ata_do_link_abort(link->ap, link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) EXPORT_SYMBOL_GPL(ata_link_abort);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) * ata_port_abort - abort all qc's on the port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) * @ap: ATA port to abort qc's for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) * Abort all active qc's of @ap and schedule EH.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) * spin_lock_irqsave(host_set lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) * Number of aborted qc's.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) int ata_port_abort(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) return ata_do_link_abort(ap, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) EXPORT_SYMBOL_GPL(ata_port_abort);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) * __ata_port_freeze - freeze port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) * @ap: ATA port to freeze
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) * This function is called when HSM violation or some other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) * condition disrupts normal operation of the port. Frozen port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) * is not allowed to perform any operation until the port is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) * thawed, which usually follows a successful reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) * ap->ops->freeze() callback can be used for freezing the port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) * hardware-wise (e.g. mask interrupt and stop DMA engine). If a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) * port cannot be frozen hardware-wise, the interrupt handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) * must ack and clear interrupts unconditionally while the port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) * is frozen.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) * spin_lock_irqsave(host lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) static void __ata_port_freeze(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) WARN_ON(!ap->ops->error_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) if (ap->ops->freeze)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) ap->ops->freeze(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) ap->pflags |= ATA_PFLAG_FROZEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) DPRINTK("ata%u port frozen\n", ap->print_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) * ata_port_freeze - abort & freeze port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) * @ap: ATA port to freeze
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) * Abort and freeze @ap. The freeze operation must be called
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) * first, because some hardware requires special operations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) * before the taskfile registers are accessible.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) * spin_lock_irqsave(host lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) * Number of aborted commands.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) int ata_port_freeze(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) int nr_aborted;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) WARN_ON(!ap->ops->error_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) __ata_port_freeze(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) nr_aborted = ata_port_abort(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) return nr_aborted;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) EXPORT_SYMBOL_GPL(ata_port_freeze);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) * ata_eh_freeze_port - EH helper to freeze port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) * @ap: ATA port to freeze
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) * Freeze @ap.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) * None.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) void ata_eh_freeze_port(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) if (!ap->ops->error_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) __ata_port_freeze(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) EXPORT_SYMBOL_GPL(ata_eh_freeze_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) * ata_eh_thaw_port - EH helper to thaw port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) * @ap: ATA port to thaw
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) * Thaw frozen port @ap.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) * None.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) void ata_eh_thaw_port(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) if (!ap->ops->error_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) ap->pflags &= ~ATA_PFLAG_FROZEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) if (ap->ops->thaw)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) ap->ops->thaw(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) DPRINTK("ata%u port thawed\n", ap->print_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) static void ata_eh_scsidone(struct scsi_cmnd *scmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) /* nada */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) static void __ata_eh_qc_complete(struct ata_queued_cmd *qc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) struct ata_port *ap = qc->ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) struct scsi_cmnd *scmd = qc->scsicmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) qc->scsidone = ata_eh_scsidone;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) __ata_qc_complete(qc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) WARN_ON(ata_tag_valid(qc->tag));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) scsi_eh_finish_cmd(scmd, &ap->eh_done_q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) * ata_eh_qc_complete - Complete an active ATA command from EH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) * @qc: Command to complete
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) * Indicate to the mid and upper layers that an ATA command has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) * completed. To be used from EH.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) void ata_eh_qc_complete(struct ata_queued_cmd *qc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) struct scsi_cmnd *scmd = qc->scsicmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) scmd->retries = scmd->allowed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) __ata_eh_qc_complete(qc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) * ata_eh_qc_retry - Tell midlayer to retry an ATA command after EH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) * @qc: Command to retry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) * Indicate to the mid and upper layers that an ATA command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) * should be retried. To be used from EH.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) * SCSI midlayer limits the number of retries to scmd->allowed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) * scmd->allowed is incremented for commands which get retried
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) * due to unrelated failures (qc->err_mask is zero).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) void ata_eh_qc_retry(struct ata_queued_cmd *qc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) struct scsi_cmnd *scmd = qc->scsicmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) if (!qc->err_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) scmd->allowed++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) __ata_eh_qc_complete(qc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) * ata_dev_disable - disable ATA device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) * @dev: ATA device to disable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) * Disable @dev.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) * Locking:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) * EH context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) void ata_dev_disable(struct ata_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) if (!ata_dev_enabled(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) if (ata_msg_drv(dev->link->ap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) ata_dev_warn(dev, "disabled\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) ata_acpi_on_disable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) ata_down_xfermask_limit(dev, ATA_DNXFER_FORCE_PIO0 | ATA_DNXFER_QUIET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) dev->class++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) /* From now till the next successful probe, ering is used to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) * track probe failures. Clear accumulated device error info.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) ata_ering_clear(&dev->ering);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) EXPORT_SYMBOL_GPL(ata_dev_disable);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) * ata_eh_detach_dev - detach ATA device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) * @dev: ATA device to detach
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) * Detach @dev.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) * None.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) void ata_eh_detach_dev(struct ata_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) struct ata_link *link = dev->link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) struct ata_port *ap = link->ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) ata_dev_disable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) dev->flags &= ~ATA_DFLAG_DETACH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) if (ata_scsi_offline_dev(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) dev->flags |= ATA_DFLAG_DETACHED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) ap->pflags |= ATA_PFLAG_SCSI_HOTPLUG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) /* clear per-dev EH info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) ata_eh_clear_action(link, dev, &link->eh_info, ATA_EH_PERDEV_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) ata_eh_clear_action(link, dev, &link->eh_context.i, ATA_EH_PERDEV_MASK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) ehc->saved_xfer_mode[dev->devno] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) ehc->saved_ncq_enabled &= ~(1 << dev->devno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) * ata_eh_about_to_do - about to perform eh_action
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) * @link: target ATA link
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) * @dev: target ATA dev for per-dev action (can be NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) * @action: action about to be performed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) * Called just before performing EH actions to clear related bits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) * in @link->eh_info such that eh actions are not unnecessarily
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) * repeated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) * None.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) void ata_eh_about_to_do(struct ata_link *link, struct ata_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) unsigned int action)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) struct ata_port *ap = link->ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) struct ata_eh_info *ehi = &link->eh_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) ata_eh_clear_action(link, dev, ehi, action);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) /* About to take EH action, set RECOVERED. Ignore actions on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) * slave links as master will do them again.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) if (!(ehc->i.flags & ATA_EHI_QUIET) && link != ap->slave_link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) ap->pflags |= ATA_PFLAG_RECOVERED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) * ata_eh_done - EH action complete
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) * @link: ATA link for which EH actions are complete
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) * @dev: target ATA dev for per-dev action (can be NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) * @action: action just completed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) * Called right after performing EH actions to clear related bits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) * in @link->eh_context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) * None.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) void ata_eh_done(struct ata_link *link, struct ata_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) unsigned int action)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) ata_eh_clear_action(link, dev, &ehc->i, action);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) * ata_err_string - convert err_mask to descriptive string
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) * @err_mask: error mask to convert to string
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) * Convert @err_mask to descriptive string. Errors are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) * prioritized according to severity and only the most severe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) * error is reported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) * None.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) * Descriptive string for @err_mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) static const char *ata_err_string(unsigned int err_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) if (err_mask & AC_ERR_HOST_BUS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) return "host bus error";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) if (err_mask & AC_ERR_ATA_BUS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) return "ATA bus error";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) if (err_mask & AC_ERR_TIMEOUT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) return "timeout";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) if (err_mask & AC_ERR_HSM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) return "HSM violation";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) if (err_mask & AC_ERR_SYSTEM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) return "internal error";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) if (err_mask & AC_ERR_MEDIA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) return "media error";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) if (err_mask & AC_ERR_INVALID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) return "invalid argument";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) if (err_mask & AC_ERR_DEV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) return "device error";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) if (err_mask & AC_ERR_NCQ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) return "NCQ error";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) if (err_mask & AC_ERR_NODEV_HINT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) return "Polling detection error";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) return "unknown error";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) * atapi_eh_tur - perform ATAPI TEST_UNIT_READY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) * @dev: target ATAPI device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) * @r_sense_key: out parameter for sense_key
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) * Perform ATAPI TEST_UNIT_READY.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) * EH context (may sleep).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) * 0 on success, AC_ERR_* mask on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) unsigned int atapi_eh_tur(struct ata_device *dev, u8 *r_sense_key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) u8 cdb[ATAPI_CDB_LEN] = { TEST_UNIT_READY, 0, 0, 0, 0, 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) struct ata_taskfile tf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) unsigned int err_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) ata_tf_init(dev, &tf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) tf.command = ATA_CMD_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) tf.protocol = ATAPI_PROT_NODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) err_mask = ata_exec_internal(dev, &tf, cdb, DMA_NONE, NULL, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) if (err_mask == AC_ERR_DEV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) *r_sense_key = tf.feature >> 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) return err_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) * ata_eh_request_sense - perform REQUEST_SENSE_DATA_EXT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) * @qc: qc to perform REQUEST_SENSE_SENSE_DATA_EXT to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) * @cmd: scsi command for which the sense code should be set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) * Perform REQUEST_SENSE_DATA_EXT after the device reported CHECK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) * SENSE. This function is an EH helper.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) * Kernel thread context (may sleep).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) static void ata_eh_request_sense(struct ata_queued_cmd *qc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) struct scsi_cmnd *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) struct ata_device *dev = qc->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) struct ata_taskfile tf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) unsigned int err_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) if (qc->ap->pflags & ATA_PFLAG_FROZEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) ata_dev_warn(dev, "sense data available but port frozen\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) if (!cmd || qc->flags & ATA_QCFLAG_SENSE_VALID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) if (!ata_id_sense_reporting_enabled(dev->id)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) ata_dev_warn(qc->dev, "sense data reporting disabled\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) DPRINTK("ATA request sense\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) ata_tf_init(dev, &tf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) tf.flags |= ATA_TFLAG_LBA | ATA_TFLAG_LBA48;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) tf.command = ATA_CMD_REQ_SENSE_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) tf.protocol = ATA_PROT_NODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) /* Ignore err_mask; ATA_ERR might be set */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) if (tf.command & ATA_SENSE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) ata_scsi_set_sense(dev, cmd, tf.lbah, tf.lbam, tf.lbal);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) qc->flags |= ATA_QCFLAG_SENSE_VALID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) ata_dev_warn(dev, "request sense failed stat %02x emask %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) tf.command, err_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) * atapi_eh_request_sense - perform ATAPI REQUEST_SENSE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) * @dev: device to perform REQUEST_SENSE to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) * @sense_buf: result sense data buffer (SCSI_SENSE_BUFFERSIZE bytes long)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) * @dfl_sense_key: default sense key to use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) * Perform ATAPI REQUEST_SENSE after the device reported CHECK
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) * SENSE. This function is EH helper.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) * Kernel thread context (may sleep).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) * 0 on success, AC_ERR_* mask on failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) unsigned int atapi_eh_request_sense(struct ata_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) u8 *sense_buf, u8 dfl_sense_key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) u8 cdb[ATAPI_CDB_LEN] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) { REQUEST_SENSE, 0, 0, 0, SCSI_SENSE_BUFFERSIZE, 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) struct ata_port *ap = dev->link->ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) struct ata_taskfile tf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) DPRINTK("ATAPI request sense\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) /* initialize sense_buf with the error register,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) * for the case where they are -not- overwritten
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) sense_buf[0] = 0x70;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) sense_buf[2] = dfl_sense_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) /* some devices time out if garbage left in tf */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) ata_tf_init(dev, &tf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) tf.command = ATA_CMD_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) /* is it pointless to prefer PIO for "safety reasons"? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) if (ap->flags & ATA_FLAG_PIO_DMA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) tf.protocol = ATAPI_PROT_DMA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) tf.feature |= ATAPI_PKT_DMA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) tf.protocol = ATAPI_PROT_PIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) tf.lbam = SCSI_SENSE_BUFFERSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) tf.lbah = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) return ata_exec_internal(dev, &tf, cdb, DMA_FROM_DEVICE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) sense_buf, SCSI_SENSE_BUFFERSIZE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) * ata_eh_analyze_serror - analyze SError for a failed port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) * @link: ATA link to analyze SError for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) * Analyze SError if available and further determine cause of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) * failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) * None.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) static void ata_eh_analyze_serror(struct ata_link *link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) u32 serror = ehc->i.serror;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) unsigned int err_mask = 0, action = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) u32 hotplug_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) if (serror & (SERR_PERSISTENT | SERR_DATA)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) err_mask |= AC_ERR_ATA_BUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) action |= ATA_EH_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) if (serror & SERR_PROTOCOL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) err_mask |= AC_ERR_HSM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) action |= ATA_EH_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) if (serror & SERR_INTERNAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) err_mask |= AC_ERR_SYSTEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) action |= ATA_EH_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) /* Determine whether a hotplug event has occurred. Both
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) * SError.N/X are considered hotplug events for enabled or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) * host links. For disabled PMP links, only N bit is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) * considered as X bit is left at 1 for link plugging.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) if (link->lpm_policy > ATA_LPM_MAX_POWER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) hotplug_mask = 0; /* hotplug doesn't work w/ LPM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) else if (!(link->flags & ATA_LFLAG_DISABLED) || ata_is_host_link(link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) hotplug_mask = SERR_PHYRDY_CHG | SERR_DEV_XCHG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) hotplug_mask = SERR_PHYRDY_CHG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) if (serror & hotplug_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) ata_ehi_hotplugged(&ehc->i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) ehc->i.err_mask |= err_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) ehc->i.action |= action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) * ata_eh_analyze_tf - analyze taskfile of a failed qc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) * @qc: qc to analyze
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) * @tf: Taskfile registers to analyze
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) * Analyze taskfile of @qc and further determine cause of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) * failure. This function also requests ATAPI sense data if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) * available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) * Kernel thread context (may sleep).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) * Determined recovery action
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) static unsigned int ata_eh_analyze_tf(struct ata_queued_cmd *qc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) const struct ata_taskfile *tf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) unsigned int tmp, action = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) u8 stat = tf->command, err = tf->feature;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) if ((stat & (ATA_BUSY | ATA_DRQ | ATA_DRDY)) != ATA_DRDY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) qc->err_mask |= AC_ERR_HSM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) return ATA_EH_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) if (stat & (ATA_ERR | ATA_DF)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) qc->err_mask |= AC_ERR_DEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) * Sense data reporting does not work if the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) * device fault bit is set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) if (stat & ATA_DF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) stat &= ~ATA_SENSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) switch (qc->dev->class) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) case ATA_DEV_ZAC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) if (stat & ATA_SENSE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) ata_eh_request_sense(qc, qc->scsicmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) case ATA_DEV_ATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) if (err & ATA_ICRC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) qc->err_mask |= AC_ERR_ATA_BUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) if (err & (ATA_UNC | ATA_AMNF))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) qc->err_mask |= AC_ERR_MEDIA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) if (err & ATA_IDNF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) qc->err_mask |= AC_ERR_INVALID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) case ATA_DEV_ATAPI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) if (!(qc->ap->pflags & ATA_PFLAG_FROZEN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) tmp = atapi_eh_request_sense(qc->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) qc->scsicmd->sense_buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) qc->result_tf.feature >> 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) if (!tmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) qc->flags |= ATA_QCFLAG_SENSE_VALID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) qc->err_mask |= tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) if (qc->flags & ATA_QCFLAG_SENSE_VALID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) int ret = scsi_check_sense(qc->scsicmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) * SUCCESS here means that the sense code could be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) * evaluated and should be passed to the upper layers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) * for correct evaluation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) * FAILED means the sense code could not be interpreted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) * and the device would need to be reset.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) * NEEDS_RETRY and ADD_TO_MLQUEUE means that the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) * command would need to be retried.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) if (ret == NEEDS_RETRY || ret == ADD_TO_MLQUEUE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) qc->flags |= ATA_QCFLAG_RETRY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) qc->err_mask |= AC_ERR_OTHER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) } else if (ret != SUCCESS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) qc->err_mask |= AC_ERR_HSM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) if (qc->err_mask & (AC_ERR_HSM | AC_ERR_TIMEOUT | AC_ERR_ATA_BUS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) action |= ATA_EH_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) return action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) static int ata_eh_categorize_error(unsigned int eflags, unsigned int err_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) int *xfer_ok)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) int base = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) if (!(eflags & ATA_EFLAG_DUBIOUS_XFER))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) *xfer_ok = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) if (!*xfer_ok)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) base = ATA_ECAT_DUBIOUS_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) if (err_mask & AC_ERR_ATA_BUS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) return base + ATA_ECAT_ATA_BUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) if (err_mask & AC_ERR_TIMEOUT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) return base + ATA_ECAT_TOUT_HSM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) if (eflags & ATA_EFLAG_IS_IO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) if (err_mask & AC_ERR_HSM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) return base + ATA_ECAT_TOUT_HSM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) if ((err_mask &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) (AC_ERR_DEV|AC_ERR_MEDIA|AC_ERR_INVALID)) == AC_ERR_DEV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) return base + ATA_ECAT_UNK_DEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) struct speed_down_verdict_arg {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) u64 since;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) int xfer_ok;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) int nr_errors[ATA_ECAT_NR];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) static int speed_down_verdict_cb(struct ata_ering_entry *ent, void *void_arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) struct speed_down_verdict_arg *arg = void_arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) int cat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) if ((ent->eflags & ATA_EFLAG_OLD_ER) || (ent->timestamp < arg->since))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) cat = ata_eh_categorize_error(ent->eflags, ent->err_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) &arg->xfer_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) arg->nr_errors[cat]++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) * ata_eh_speed_down_verdict - Determine speed down verdict
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) * @dev: Device of interest
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) * This function examines error ring of @dev and determines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) * whether NCQ needs to be turned off, transfer speed should be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) * stepped down, or falling back to PIO is necessary.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) * ECAT_ATA_BUS : ATA_BUS error for any command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) * ECAT_TOUT_HSM : TIMEOUT for any command or HSM violation for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) * IO commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) * ECAT_UNK_DEV : Unknown DEV error for IO commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) * ECAT_DUBIOUS_* : Identical to above three but occurred while
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) * data transfer hasn't been verified.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) * Verdicts are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) * NCQ_OFF : Turn off NCQ.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) * SPEED_DOWN : Speed down transfer speed but don't fall back
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) * to PIO.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) * FALLBACK_TO_PIO : Fall back to PIO.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) * Even if multiple verdicts are returned, only one action is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) * taken per error. An action triggered by non-DUBIOUS errors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) * clears ering, while one triggered by DUBIOUS_* errors doesn't.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) * This is to expedite speed down decisions right after device is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) * initially configured.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) * The following are speed down rules. #1 and #2 deal with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) * DUBIOUS errors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) * 1. If more than one DUBIOUS_ATA_BUS or DUBIOUS_TOUT_HSM errors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) * occurred during last 5 mins, SPEED_DOWN and FALLBACK_TO_PIO.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) * 2. If more than one DUBIOUS_TOUT_HSM or DUBIOUS_UNK_DEV errors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) * occurred during last 5 mins, NCQ_OFF.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) * 3. If more than 8 ATA_BUS, TOUT_HSM or UNK_DEV errors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) * occurred during last 5 mins, FALLBACK_TO_PIO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) * 4. If more than 3 TOUT_HSM or UNK_DEV errors occurred
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) * during last 10 mins, NCQ_OFF.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) * 5. If more than 3 ATA_BUS or TOUT_HSM errors, or more than 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) * UNK_DEV errors occurred during last 10 mins, SPEED_DOWN.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) * Inherited from caller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) * OR of ATA_EH_SPDN_* flags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) static unsigned int ata_eh_speed_down_verdict(struct ata_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) const u64 j5mins = 5LLU * 60 * HZ, j10mins = 10LLU * 60 * HZ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) u64 j64 = get_jiffies_64();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) struct speed_down_verdict_arg arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) unsigned int verdict = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) /* scan past 5 mins of error history */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) memset(&arg, 0, sizeof(arg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) arg.since = j64 - min(j64, j5mins);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) ata_ering_map(&dev->ering, speed_down_verdict_cb, &arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) if (arg.nr_errors[ATA_ECAT_DUBIOUS_ATA_BUS] +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) arg.nr_errors[ATA_ECAT_DUBIOUS_TOUT_HSM] > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) verdict |= ATA_EH_SPDN_SPEED_DOWN |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) ATA_EH_SPDN_FALLBACK_TO_PIO | ATA_EH_SPDN_KEEP_ERRORS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) if (arg.nr_errors[ATA_ECAT_DUBIOUS_TOUT_HSM] +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) arg.nr_errors[ATA_ECAT_DUBIOUS_UNK_DEV] > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) verdict |= ATA_EH_SPDN_NCQ_OFF | ATA_EH_SPDN_KEEP_ERRORS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) if (arg.nr_errors[ATA_ECAT_ATA_BUS] +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) arg.nr_errors[ATA_ECAT_TOUT_HSM] +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) arg.nr_errors[ATA_ECAT_UNK_DEV] > 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) verdict |= ATA_EH_SPDN_FALLBACK_TO_PIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) /* scan past 10 mins of error history */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) memset(&arg, 0, sizeof(arg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) arg.since = j64 - min(j64, j10mins);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) ata_ering_map(&dev->ering, speed_down_verdict_cb, &arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) if (arg.nr_errors[ATA_ECAT_TOUT_HSM] +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) arg.nr_errors[ATA_ECAT_UNK_DEV] > 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) verdict |= ATA_EH_SPDN_NCQ_OFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) if (arg.nr_errors[ATA_ECAT_ATA_BUS] +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) arg.nr_errors[ATA_ECAT_TOUT_HSM] > 3 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) arg.nr_errors[ATA_ECAT_UNK_DEV] > 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) verdict |= ATA_EH_SPDN_SPEED_DOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) return verdict;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) * ata_eh_speed_down - record error and speed down if necessary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) * @dev: Failed device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) * @eflags: mask of ATA_EFLAG_* flags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) * @err_mask: err_mask of the error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) * Record error and examine error history to determine whether
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) * adjusting transmission speed is necessary. It also sets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) * transmission limits appropriately if such adjustment is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) * necessary.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) * Kernel thread context (may sleep).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) * Determined recovery action.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) static unsigned int ata_eh_speed_down(struct ata_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) unsigned int eflags, unsigned int err_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) struct ata_link *link = ata_dev_phys_link(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) int xfer_ok = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) unsigned int verdict;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) unsigned int action = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) /* don't bother if Cat-0 error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) if (ata_eh_categorize_error(eflags, err_mask, &xfer_ok) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) /* record error and determine whether speed down is necessary */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) ata_ering_record(&dev->ering, eflags, err_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) verdict = ata_eh_speed_down_verdict(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) /* turn off NCQ? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) if ((verdict & ATA_EH_SPDN_NCQ_OFF) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818) ATA_DFLAG_NCQ_OFF)) == ATA_DFLAG_NCQ) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) dev->flags |= ATA_DFLAG_NCQ_OFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) ata_dev_warn(dev, "NCQ disabled due to excessive errors\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) /* speed down? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) if (verdict & ATA_EH_SPDN_SPEED_DOWN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) /* speed down SATA link speed if possible */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) if (sata_down_spd_limit(link, 0) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) action |= ATA_EH_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) /* lower transfer mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) if (dev->spdn_cnt < 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) static const int dma_dnxfer_sel[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) { ATA_DNXFER_DMA, ATA_DNXFER_40C };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) static const int pio_dnxfer_sel[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) { ATA_DNXFER_PIO, ATA_DNXFER_FORCE_PIO0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) int sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) if (dev->xfer_shift != ATA_SHIFT_PIO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) sel = dma_dnxfer_sel[dev->spdn_cnt];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) sel = pio_dnxfer_sel[dev->spdn_cnt];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) dev->spdn_cnt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) if (ata_down_xfermask_limit(dev, sel) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) action |= ATA_EH_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) /* Fall back to PIO? Slowing down to PIO is meaningless for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) * SATA ATA devices. Consider it only for PATA and SATAPI.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) if ((verdict & ATA_EH_SPDN_FALLBACK_TO_PIO) && (dev->spdn_cnt >= 2) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) (link->ap->cbl != ATA_CBL_SATA || dev->class == ATA_DEV_ATAPI) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) (dev->xfer_shift != ATA_SHIFT_PIO)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) if (ata_down_xfermask_limit(dev, ATA_DNXFER_FORCE_PIO) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) dev->spdn_cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) action |= ATA_EH_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) /* device has been slowed down, blow error history */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) if (!(verdict & ATA_EH_SPDN_KEEP_ERRORS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) ata_ering_clear(&dev->ering);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) return action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876) * ata_eh_worth_retry - analyze error and decide whether to retry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) * @qc: qc to possibly retry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) * Look at the cause of the error and decide if a retry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) * might be useful or not. We don't want to retry media errors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) * because the drive itself has probably already taken 10-30 seconds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) * doing its own internal retries before reporting the failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) static inline int ata_eh_worth_retry(struct ata_queued_cmd *qc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) if (qc->err_mask & AC_ERR_MEDIA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) return 0; /* don't retry media errors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) if (qc->flags & ATA_QCFLAG_IO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) return 1; /* otherwise retry anything from fs stack */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890) if (qc->err_mask & AC_ERR_INVALID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) return 0; /* don't retry these */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) return qc->err_mask != AC_ERR_DEV; /* retry if not dev error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) * ata_eh_quiet - check if we need to be quiet about a command error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) * @qc: qc to check
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) * Look at the qc flags anbd its scsi command request flags to determine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) * if we need to be quiet about the command failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) static inline bool ata_eh_quiet(struct ata_queued_cmd *qc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904) if (qc->scsicmd &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) qc->scsicmd->request->rq_flags & RQF_QUIET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) qc->flags |= ATA_QCFLAG_QUIET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) return qc->flags & ATA_QCFLAG_QUIET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911) * ata_eh_link_autopsy - analyze error and determine recovery action
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) * @link: host link to perform autopsy on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) * Analyze why @link failed and determine which recovery actions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) * are needed. This function also sets more detailed AC_ERR_*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916) * values and fills sense data for ATAPI CHECK SENSE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) * Kernel thread context (may sleep).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) static void ata_eh_link_autopsy(struct ata_link *link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) struct ata_port *ap = link->ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) struct ata_queued_cmd *qc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) struct ata_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) unsigned int all_err_mask = 0, eflags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) int tag, nr_failed = 0, nr_quiet = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) u32 serror;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) DPRINTK("ENTER\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) if (ehc->i.flags & ATA_EHI_NO_AUTOPSY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) /* obtain and analyze SError */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) rc = sata_scr_read(link, SCR_ERROR, &serror);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939) if (rc == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) ehc->i.serror |= serror;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) ata_eh_analyze_serror(link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) } else if (rc != -EOPNOTSUPP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) /* SError read failed, force reset and probing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) ehc->i.probe_mask |= ATA_ALL_DEVICES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) ehc->i.action |= ATA_EH_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) ehc->i.err_mask |= AC_ERR_OTHER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) /* analyze NCQ failure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) ata_eh_analyze_ncq_error(link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) /* any real error trumps AC_ERR_OTHER */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) if (ehc->i.err_mask & ~AC_ERR_OTHER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) ehc->i.err_mask &= ~AC_ERR_OTHER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) all_err_mask |= ehc->i.err_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) ata_qc_for_each_raw(ap, qc, tag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) if (!(qc->flags & ATA_QCFLAG_FAILED) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960) ata_dev_phys_link(qc->dev) != link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963) /* inherit upper level err_mask */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) qc->err_mask |= ehc->i.err_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966) /* analyze TF */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967) ehc->i.action |= ata_eh_analyze_tf(qc, &qc->result_tf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) /* DEV errors are probably spurious in case of ATA_BUS error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970) if (qc->err_mask & AC_ERR_ATA_BUS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) qc->err_mask &= ~(AC_ERR_DEV | AC_ERR_MEDIA |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) AC_ERR_INVALID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974) /* any real error trumps unknown error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) if (qc->err_mask & ~AC_ERR_OTHER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) qc->err_mask &= ~AC_ERR_OTHER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) * SENSE_VALID trumps dev/unknown error and revalidation. Upper
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) * layers will determine whether the command is worth retrying
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) * based on the sense data and device class/type. Otherwise,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982) * determine directly if the command is worth retrying using its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983) * error mask and flags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) if (qc->flags & ATA_QCFLAG_SENSE_VALID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986) qc->err_mask &= ~(AC_ERR_DEV | AC_ERR_OTHER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) else if (ata_eh_worth_retry(qc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988) qc->flags |= ATA_QCFLAG_RETRY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) /* accumulate error info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) ehc->i.dev = qc->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) all_err_mask |= qc->err_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993) if (qc->flags & ATA_QCFLAG_IO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) eflags |= ATA_EFLAG_IS_IO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) trace_ata_eh_link_autopsy_qc(qc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) /* Count quiet errors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) if (ata_eh_quiet(qc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999) nr_quiet++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) nr_failed++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003) /* If all failed commands requested silence, then be quiet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004) if (nr_quiet == nr_failed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) ehc->i.flags |= ATA_EHI_QUIET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007) /* enforce default EH actions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) if (ap->pflags & ATA_PFLAG_FROZEN ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009) all_err_mask & (AC_ERR_HSM | AC_ERR_TIMEOUT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010) ehc->i.action |= ATA_EH_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) else if (((eflags & ATA_EFLAG_IS_IO) && all_err_mask) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012) (!(eflags & ATA_EFLAG_IS_IO) && (all_err_mask & ~AC_ERR_DEV)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013) ehc->i.action |= ATA_EH_REVALIDATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015) /* If we have offending qcs and the associated failed device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) * perform per-dev EH action only on the offending device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) if (ehc->i.dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) ehc->i.dev_action[ehc->i.dev->devno] |=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) ehc->i.action & ATA_EH_PERDEV_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021) ehc->i.action &= ~ATA_EH_PERDEV_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024) /* propagate timeout to host link */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) if ((all_err_mask & AC_ERR_TIMEOUT) && !ata_is_host_link(link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) ap->link.eh_context.i.err_mask |= AC_ERR_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) /* record error and consider speeding down */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) dev = ehc->i.dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030) if (!dev && ((ata_link_max_devices(link) == 1 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) ata_dev_enabled(link->device))))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) dev = link->device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) if (dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035) if (dev->flags & ATA_DFLAG_DUBIOUS_XFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036) eflags |= ATA_EFLAG_DUBIOUS_XFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) ehc->i.action |= ata_eh_speed_down(dev, eflags, all_err_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) trace_ata_eh_link_autopsy(dev, ehc->i.action, all_err_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) DPRINTK("EXIT\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044) * ata_eh_autopsy - analyze error and determine recovery action
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045) * @ap: host port to perform autopsy on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) * Analyze all links of @ap and determine why they failed and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048) * which recovery actions are needed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) * Kernel thread context (may sleep).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053) void ata_eh_autopsy(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055) struct ata_link *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) ata_for_each_link(link, ap, EDGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058) ata_eh_link_autopsy(link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) /* Handle the frigging slave link. Autopsy is done similarly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) * but actions and flags are transferred over to the master
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062) * link and handled from there.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064) if (ap->slave_link) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) struct ata_eh_context *mehc = &ap->link.eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) struct ata_eh_context *sehc = &ap->slave_link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068) /* transfer control flags from master to slave */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) sehc->i.flags |= mehc->i.flags & ATA_EHI_TO_SLAVE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071) /* perform autopsy on the slave link */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) ata_eh_link_autopsy(ap->slave_link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074) /* transfer actions from slave to master and clear slave */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) ata_eh_about_to_do(ap->slave_link, NULL, ATA_EH_ALL_ACTIONS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) mehc->i.action |= sehc->i.action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) mehc->i.dev_action[1] |= sehc->i.dev_action[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078) mehc->i.flags |= sehc->i.flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) ata_eh_done(ap->slave_link, NULL, ATA_EH_ALL_ACTIONS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) /* Autopsy of fanout ports can affect host link autopsy.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) * Perform host link autopsy last.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) if (sata_pmp_attached(ap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086) ata_eh_link_autopsy(&ap->link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) * ata_get_cmd_descript - get description for ATA command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) * @command: ATA command code to get description for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) * Return a textual description of the given command, or NULL if the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094) * command is not known.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097) * None
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099) const char *ata_get_cmd_descript(u8 command)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101) #ifdef CONFIG_ATA_VERBOSE_ERROR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102) static const struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104) u8 command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105) const char *text;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106) } cmd_descr[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107) { ATA_CMD_DEV_RESET, "DEVICE RESET" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108) { ATA_CMD_CHK_POWER, "CHECK POWER MODE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) { ATA_CMD_STANDBY, "STANDBY" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110) { ATA_CMD_IDLE, "IDLE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111) { ATA_CMD_EDD, "EXECUTE DEVICE DIAGNOSTIC" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) { ATA_CMD_DOWNLOAD_MICRO, "DOWNLOAD MICROCODE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113) { ATA_CMD_DOWNLOAD_MICRO_DMA, "DOWNLOAD MICROCODE DMA" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114) { ATA_CMD_NOP, "NOP" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115) { ATA_CMD_FLUSH, "FLUSH CACHE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) { ATA_CMD_FLUSH_EXT, "FLUSH CACHE EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117) { ATA_CMD_ID_ATA, "IDENTIFY DEVICE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118) { ATA_CMD_ID_ATAPI, "IDENTIFY PACKET DEVICE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119) { ATA_CMD_SERVICE, "SERVICE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120) { ATA_CMD_READ, "READ DMA" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121) { ATA_CMD_READ_EXT, "READ DMA EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2122) { ATA_CMD_READ_QUEUED, "READ DMA QUEUED" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2123) { ATA_CMD_READ_STREAM_EXT, "READ STREAM EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2124) { ATA_CMD_READ_STREAM_DMA_EXT, "READ STREAM DMA EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2125) { ATA_CMD_WRITE, "WRITE DMA" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2126) { ATA_CMD_WRITE_EXT, "WRITE DMA EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2127) { ATA_CMD_WRITE_QUEUED, "WRITE DMA QUEUED EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2128) { ATA_CMD_WRITE_STREAM_EXT, "WRITE STREAM EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2129) { ATA_CMD_WRITE_STREAM_DMA_EXT, "WRITE STREAM DMA EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2130) { ATA_CMD_WRITE_FUA_EXT, "WRITE DMA FUA EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2131) { ATA_CMD_WRITE_QUEUED_FUA_EXT, "WRITE DMA QUEUED FUA EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2132) { ATA_CMD_FPDMA_READ, "READ FPDMA QUEUED" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2133) { ATA_CMD_FPDMA_WRITE, "WRITE FPDMA QUEUED" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2134) { ATA_CMD_FPDMA_SEND, "SEND FPDMA QUEUED" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2135) { ATA_CMD_FPDMA_RECV, "RECEIVE FPDMA QUEUED" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2136) { ATA_CMD_PIO_READ, "READ SECTOR(S)" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2137) { ATA_CMD_PIO_READ_EXT, "READ SECTOR(S) EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2138) { ATA_CMD_PIO_WRITE, "WRITE SECTOR(S)" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2139) { ATA_CMD_PIO_WRITE_EXT, "WRITE SECTOR(S) EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2140) { ATA_CMD_READ_MULTI, "READ MULTIPLE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2141) { ATA_CMD_READ_MULTI_EXT, "READ MULTIPLE EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2142) { ATA_CMD_WRITE_MULTI, "WRITE MULTIPLE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2143) { ATA_CMD_WRITE_MULTI_EXT, "WRITE MULTIPLE EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2144) { ATA_CMD_WRITE_MULTI_FUA_EXT, "WRITE MULTIPLE FUA EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2145) { ATA_CMD_SET_FEATURES, "SET FEATURES" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2146) { ATA_CMD_SET_MULTI, "SET MULTIPLE MODE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2147) { ATA_CMD_VERIFY, "READ VERIFY SECTOR(S)" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2148) { ATA_CMD_VERIFY_EXT, "READ VERIFY SECTOR(S) EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2149) { ATA_CMD_WRITE_UNCORR_EXT, "WRITE UNCORRECTABLE EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2150) { ATA_CMD_STANDBYNOW1, "STANDBY IMMEDIATE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2151) { ATA_CMD_IDLEIMMEDIATE, "IDLE IMMEDIATE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2152) { ATA_CMD_SLEEP, "SLEEP" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2153) { ATA_CMD_INIT_DEV_PARAMS, "INITIALIZE DEVICE PARAMETERS" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2154) { ATA_CMD_READ_NATIVE_MAX, "READ NATIVE MAX ADDRESS" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2155) { ATA_CMD_READ_NATIVE_MAX_EXT, "READ NATIVE MAX ADDRESS EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2156) { ATA_CMD_SET_MAX, "SET MAX ADDRESS" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2157) { ATA_CMD_SET_MAX_EXT, "SET MAX ADDRESS EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2158) { ATA_CMD_READ_LOG_EXT, "READ LOG EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2159) { ATA_CMD_WRITE_LOG_EXT, "WRITE LOG EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2160) { ATA_CMD_READ_LOG_DMA_EXT, "READ LOG DMA EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2161) { ATA_CMD_WRITE_LOG_DMA_EXT, "WRITE LOG DMA EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2162) { ATA_CMD_TRUSTED_NONDATA, "TRUSTED NON-DATA" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2163) { ATA_CMD_TRUSTED_RCV, "TRUSTED RECEIVE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2164) { ATA_CMD_TRUSTED_RCV_DMA, "TRUSTED RECEIVE DMA" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2165) { ATA_CMD_TRUSTED_SND, "TRUSTED SEND" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2166) { ATA_CMD_TRUSTED_SND_DMA, "TRUSTED SEND DMA" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2167) { ATA_CMD_PMP_READ, "READ BUFFER" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2168) { ATA_CMD_PMP_READ_DMA, "READ BUFFER DMA" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2169) { ATA_CMD_PMP_WRITE, "WRITE BUFFER" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2170) { ATA_CMD_PMP_WRITE_DMA, "WRITE BUFFER DMA" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2171) { ATA_CMD_CONF_OVERLAY, "DEVICE CONFIGURATION OVERLAY" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2172) { ATA_CMD_SEC_SET_PASS, "SECURITY SET PASSWORD" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2173) { ATA_CMD_SEC_UNLOCK, "SECURITY UNLOCK" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2174) { ATA_CMD_SEC_ERASE_PREP, "SECURITY ERASE PREPARE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2175) { ATA_CMD_SEC_ERASE_UNIT, "SECURITY ERASE UNIT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2176) { ATA_CMD_SEC_FREEZE_LOCK, "SECURITY FREEZE LOCK" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2177) { ATA_CMD_SEC_DISABLE_PASS, "SECURITY DISABLE PASSWORD" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2178) { ATA_CMD_CONFIG_STREAM, "CONFIGURE STREAM" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2179) { ATA_CMD_SMART, "SMART" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2180) { ATA_CMD_MEDIA_LOCK, "DOOR LOCK" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2181) { ATA_CMD_MEDIA_UNLOCK, "DOOR UNLOCK" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2182) { ATA_CMD_DSM, "DATA SET MANAGEMENT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2183) { ATA_CMD_CHK_MED_CRD_TYP, "CHECK MEDIA CARD TYPE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2184) { ATA_CMD_CFA_REQ_EXT_ERR, "CFA REQUEST EXTENDED ERROR" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2185) { ATA_CMD_CFA_WRITE_NE, "CFA WRITE SECTORS WITHOUT ERASE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2186) { ATA_CMD_CFA_TRANS_SECT, "CFA TRANSLATE SECTOR" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2187) { ATA_CMD_CFA_ERASE, "CFA ERASE SECTORS" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2188) { ATA_CMD_CFA_WRITE_MULT_NE, "CFA WRITE MULTIPLE WITHOUT ERASE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2189) { ATA_CMD_REQ_SENSE_DATA, "REQUEST SENSE DATA EXT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2190) { ATA_CMD_SANITIZE_DEVICE, "SANITIZE DEVICE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2191) { ATA_CMD_ZAC_MGMT_IN, "ZAC MANAGEMENT IN" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2192) { ATA_CMD_ZAC_MGMT_OUT, "ZAC MANAGEMENT OUT" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2193) { ATA_CMD_READ_LONG, "READ LONG (with retries)" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2194) { ATA_CMD_READ_LONG_ONCE, "READ LONG (without retries)" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2195) { ATA_CMD_WRITE_LONG, "WRITE LONG (with retries)" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2196) { ATA_CMD_WRITE_LONG_ONCE, "WRITE LONG (without retries)" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2197) { ATA_CMD_RESTORE, "RECALIBRATE" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2198) { 0, NULL } /* terminate list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2199) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2201) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2202) for (i = 0; cmd_descr[i].text; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2203) if (cmd_descr[i].command == command)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2204) return cmd_descr[i].text;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2205) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2207) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2209) EXPORT_SYMBOL_GPL(ata_get_cmd_descript);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2211) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2212) * ata_eh_link_report - report error handling to user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2213) * @link: ATA link EH is going on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2214) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2215) * Report EH to user.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2216) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2217) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2218) * None.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2219) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2220) static void ata_eh_link_report(struct ata_link *link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2222) struct ata_port *ap = link->ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2223) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2224) struct ata_queued_cmd *qc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2225) const char *frozen, *desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2226) char tries_buf[6] = "";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2227) int tag, nr_failed = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2229) if (ehc->i.flags & ATA_EHI_QUIET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2230) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2232) desc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2233) if (ehc->i.desc[0] != '\0')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2234) desc = ehc->i.desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2236) ata_qc_for_each_raw(ap, qc, tag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2237) if (!(qc->flags & ATA_QCFLAG_FAILED) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2238) ata_dev_phys_link(qc->dev) != link ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2239) ((qc->flags & ATA_QCFLAG_QUIET) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2240) qc->err_mask == AC_ERR_DEV))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2241) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2242) if (qc->flags & ATA_QCFLAG_SENSE_VALID && !qc->err_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2243) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2245) nr_failed++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2248) if (!nr_failed && !ehc->i.err_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2249) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2251) frozen = "";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2252) if (ap->pflags & ATA_PFLAG_FROZEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2253) frozen = " frozen";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2255) if (ap->eh_tries < ATA_EH_MAX_TRIES)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2256) snprintf(tries_buf, sizeof(tries_buf), " t%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2257) ap->eh_tries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2259) if (ehc->i.dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2260) ata_dev_err(ehc->i.dev, "exception Emask 0x%x "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2261) "SAct 0x%x SErr 0x%x action 0x%x%s%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2262) ehc->i.err_mask, link->sactive, ehc->i.serror,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2263) ehc->i.action, frozen, tries_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2264) if (desc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2265) ata_dev_err(ehc->i.dev, "%s\n", desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2266) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2267) ata_link_err(link, "exception Emask 0x%x "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2268) "SAct 0x%x SErr 0x%x action 0x%x%s%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2269) ehc->i.err_mask, link->sactive, ehc->i.serror,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2270) ehc->i.action, frozen, tries_buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2271) if (desc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2272) ata_link_err(link, "%s\n", desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2275) #ifdef CONFIG_ATA_VERBOSE_ERROR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2276) if (ehc->i.serror)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2277) ata_link_err(link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2278) "SError: { %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s}\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2279) ehc->i.serror & SERR_DATA_RECOVERED ? "RecovData " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2280) ehc->i.serror & SERR_COMM_RECOVERED ? "RecovComm " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2281) ehc->i.serror & SERR_DATA ? "UnrecovData " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2282) ehc->i.serror & SERR_PERSISTENT ? "Persist " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2283) ehc->i.serror & SERR_PROTOCOL ? "Proto " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2284) ehc->i.serror & SERR_INTERNAL ? "HostInt " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2285) ehc->i.serror & SERR_PHYRDY_CHG ? "PHYRdyChg " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2286) ehc->i.serror & SERR_PHY_INT_ERR ? "PHYInt " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2287) ehc->i.serror & SERR_COMM_WAKE ? "CommWake " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2288) ehc->i.serror & SERR_10B_8B_ERR ? "10B8B " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2289) ehc->i.serror & SERR_DISPARITY ? "Dispar " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2290) ehc->i.serror & SERR_CRC ? "BadCRC " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2291) ehc->i.serror & SERR_HANDSHAKE ? "Handshk " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2292) ehc->i.serror & SERR_LINK_SEQ_ERR ? "LinkSeq " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2293) ehc->i.serror & SERR_TRANS_ST_ERROR ? "TrStaTrns " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2294) ehc->i.serror & SERR_UNRECOG_FIS ? "UnrecFIS " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2295) ehc->i.serror & SERR_DEV_XCHG ? "DevExch " : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2296) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2298) ata_qc_for_each_raw(ap, qc, tag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2299) struct ata_taskfile *cmd = &qc->tf, *res = &qc->result_tf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2300) char data_buf[20] = "";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2301) char cdb_buf[70] = "";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2303) if (!(qc->flags & ATA_QCFLAG_FAILED) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2304) ata_dev_phys_link(qc->dev) != link || !qc->err_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2305) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2307) if (qc->dma_dir != DMA_NONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2308) static const char *dma_str[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2309) [DMA_BIDIRECTIONAL] = "bidi",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2310) [DMA_TO_DEVICE] = "out",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2311) [DMA_FROM_DEVICE] = "in",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2312) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2313) const char *prot_str = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2315) switch (qc->tf.protocol) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2316) case ATA_PROT_UNKNOWN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2317) prot_str = "unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2318) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2319) case ATA_PROT_NODATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2320) prot_str = "nodata";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2321) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2322) case ATA_PROT_PIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2323) prot_str = "pio";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2324) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2325) case ATA_PROT_DMA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2326) prot_str = "dma";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2327) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2328) case ATA_PROT_NCQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2329) prot_str = "ncq dma";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2330) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2331) case ATA_PROT_NCQ_NODATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2332) prot_str = "ncq nodata";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2333) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2334) case ATAPI_PROT_NODATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2335) prot_str = "nodata";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2336) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2337) case ATAPI_PROT_PIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2338) prot_str = "pio";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2339) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2340) case ATAPI_PROT_DMA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2341) prot_str = "dma";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2342) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2344) snprintf(data_buf, sizeof(data_buf), " %s %u %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2345) prot_str, qc->nbytes, dma_str[qc->dma_dir]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2348) if (ata_is_atapi(qc->tf.protocol)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2349) const u8 *cdb = qc->cdb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2350) size_t cdb_len = qc->dev->cdb_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2352) if (qc->scsicmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2353) cdb = qc->scsicmd->cmnd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2354) cdb_len = qc->scsicmd->cmd_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2356) __scsi_format_command(cdb_buf, sizeof(cdb_buf),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2357) cdb, cdb_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2358) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2359) const char *descr = ata_get_cmd_descript(cmd->command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2360) if (descr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2361) ata_dev_err(qc->dev, "failed command: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2362) descr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2365) ata_dev_err(qc->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2366) "cmd %02x/%02x:%02x:%02x:%02x:%02x/%02x:%02x:%02x:%02x:%02x/%02x "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2367) "tag %d%s\n %s"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2368) "res %02x/%02x:%02x:%02x:%02x:%02x/%02x:%02x:%02x:%02x:%02x/%02x "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2369) "Emask 0x%x (%s)%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2370) cmd->command, cmd->feature, cmd->nsect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2371) cmd->lbal, cmd->lbam, cmd->lbah,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2372) cmd->hob_feature, cmd->hob_nsect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2373) cmd->hob_lbal, cmd->hob_lbam, cmd->hob_lbah,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2374) cmd->device, qc->tag, data_buf, cdb_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2375) res->command, res->feature, res->nsect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2376) res->lbal, res->lbam, res->lbah,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2377) res->hob_feature, res->hob_nsect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2378) res->hob_lbal, res->hob_lbam, res->hob_lbah,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2379) res->device, qc->err_mask, ata_err_string(qc->err_mask),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2380) qc->err_mask & AC_ERR_NCQ ? " <F>" : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2382) #ifdef CONFIG_ATA_VERBOSE_ERROR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2383) if (res->command & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2384) ATA_SENSE | ATA_ERR)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2385) if (res->command & ATA_BUSY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2386) ata_dev_err(qc->dev, "status: { Busy }\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2387) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2388) ata_dev_err(qc->dev, "status: { %s%s%s%s%s}\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2389) res->command & ATA_DRDY ? "DRDY " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2390) res->command & ATA_DF ? "DF " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2391) res->command & ATA_DRQ ? "DRQ " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2392) res->command & ATA_SENSE ? "SENSE " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2393) res->command & ATA_ERR ? "ERR " : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2396) if (cmd->command != ATA_CMD_PACKET &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2397) (res->feature & (ATA_ICRC | ATA_UNC | ATA_AMNF |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2398) ATA_IDNF | ATA_ABORTED)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2399) ata_dev_err(qc->dev, "error: { %s%s%s%s%s}\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2400) res->feature & ATA_ICRC ? "ICRC " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2401) res->feature & ATA_UNC ? "UNC " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2402) res->feature & ATA_AMNF ? "AMNF " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2403) res->feature & ATA_IDNF ? "IDNF " : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2404) res->feature & ATA_ABORTED ? "ABRT " : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2405) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2406) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2409) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2410) * ata_eh_report - report error handling to user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2411) * @ap: ATA port to report EH about
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2412) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2413) * Report EH to user.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2414) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2415) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2416) * None.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2417) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2418) void ata_eh_report(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2419) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2420) struct ata_link *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2422) ata_for_each_link(link, ap, HOST_FIRST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2423) ata_eh_link_report(link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2424) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2426) static int ata_do_reset(struct ata_link *link, ata_reset_fn_t reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2427) unsigned int *classes, unsigned long deadline,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2428) bool clear_classes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2429) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2430) struct ata_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2432) if (clear_classes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2433) ata_for_each_dev(dev, link, ALL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2434) classes[dev->devno] = ATA_DEV_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2436) return reset(link, classes, deadline);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2439) static int ata_eh_followup_srst_needed(struct ata_link *link, int rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2440) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2441) if ((link->flags & ATA_LFLAG_NO_SRST) || ata_link_offline(link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2442) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2443) if (rc == -EAGAIN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2444) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2445) if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2446) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2447) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2448) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2450) int ata_eh_reset(struct ata_link *link, int classify,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2451) ata_prereset_fn_t prereset, ata_reset_fn_t softreset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2452) ata_reset_fn_t hardreset, ata_postreset_fn_t postreset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2453) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2454) struct ata_port *ap = link->ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2455) struct ata_link *slave = ap->slave_link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2456) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2457) struct ata_eh_context *sehc = slave ? &slave->eh_context : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2458) unsigned int *classes = ehc->classes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2459) unsigned int lflags = link->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2460) int verbose = !(ehc->i.flags & ATA_EHI_QUIET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2461) int max_tries = 0, try = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2462) struct ata_link *failed_link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2463) struct ata_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2464) unsigned long deadline, now;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2465) ata_reset_fn_t reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2466) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2467) u32 sstatus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2468) int nr_unknown, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2470) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2471) * Prepare to reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2472) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2473) while (ata_eh_reset_timeouts[max_tries] != ULONG_MAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2474) max_tries++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2475) if (link->flags & ATA_LFLAG_RST_ONCE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2476) max_tries = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2477) if (link->flags & ATA_LFLAG_NO_HRST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2478) hardreset = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2479) if (link->flags & ATA_LFLAG_NO_SRST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2480) softreset = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2482) /* make sure each reset attempt is at least COOL_DOWN apart */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2483) if (ehc->i.flags & ATA_EHI_DID_RESET) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2484) now = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2485) WARN_ON(time_after(ehc->last_reset, now));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2486) deadline = ata_deadline(ehc->last_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2487) ATA_EH_RESET_COOL_DOWN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2488) if (time_before(now, deadline))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2489) schedule_timeout_uninterruptible(deadline - now);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2492) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2493) ap->pflags |= ATA_PFLAG_RESETTING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2494) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2496) ata_eh_about_to_do(link, NULL, ATA_EH_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2498) ata_for_each_dev(dev, link, ALL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2499) /* If we issue an SRST then an ATA drive (not ATAPI)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2500) * may change configuration and be in PIO0 timing. If
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2501) * we do a hard reset (or are coming from power on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2502) * this is true for ATA or ATAPI. Until we've set a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2503) * suitable controller mode we should not touch the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2504) * bus as we may be talking too fast.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2505) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2506) dev->pio_mode = XFER_PIO_0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2507) dev->dma_mode = 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2509) /* If the controller has a pio mode setup function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2510) * then use it to set the chipset to rights. Don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2511) * touch the DMA setup as that will be dealt with when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2512) * configuring devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2513) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2514) if (ap->ops->set_piomode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2515) ap->ops->set_piomode(ap, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2516) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2518) /* prefer hardreset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2519) reset = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2520) ehc->i.action &= ~ATA_EH_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2521) if (hardreset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2522) reset = hardreset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2523) ehc->i.action |= ATA_EH_HARDRESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2524) } else if (softreset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2525) reset = softreset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2526) ehc->i.action |= ATA_EH_SOFTRESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2527) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2529) if (prereset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2530) unsigned long deadline = ata_deadline(jiffies,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2531) ATA_EH_PRERESET_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2532)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2533) if (slave) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2534) sehc->i.action &= ~ATA_EH_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2535) sehc->i.action |= ehc->i.action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2536) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2538) rc = prereset(link, deadline);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2540) /* If present, do prereset on slave link too. Reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2541) * is skipped iff both master and slave links report
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2542) * -ENOENT or clear ATA_EH_RESET.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2543) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2544) if (slave && (rc == 0 || rc == -ENOENT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2545) int tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2547) tmp = prereset(slave, deadline);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2548) if (tmp != -ENOENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2549) rc = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2551) ehc->i.action |= sehc->i.action;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2552) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2554) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2555) if (rc == -ENOENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2556) ata_link_dbg(link, "port disabled--ignoring\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2557) ehc->i.action &= ~ATA_EH_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2559) ata_for_each_dev(dev, link, ALL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2560) classes[dev->devno] = ATA_DEV_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2562) rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2563) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2564) ata_link_err(link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2565) "prereset failed (errno=%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2566) rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2567) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2568) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2570) /* prereset() might have cleared ATA_EH_RESET. If so,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2571) * bang classes, thaw and return.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2572) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2573) if (reset && !(ehc->i.action & ATA_EH_RESET)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2574) ata_for_each_dev(dev, link, ALL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2575) classes[dev->devno] = ATA_DEV_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2576) if ((ap->pflags & ATA_PFLAG_FROZEN) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2577) ata_is_host_link(link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2578) ata_eh_thaw_port(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2579) rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2580) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2581) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2582) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2584) retry:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2585) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2586) * Perform reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2587) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2588) if (ata_is_host_link(link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2589) ata_eh_freeze_port(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2591) deadline = ata_deadline(jiffies, ata_eh_reset_timeouts[try++]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2593) if (reset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2594) if (verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2595) ata_link_info(link, "%s resetting link\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2596) reset == softreset ? "soft" : "hard");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2598) /* mark that this EH session started with reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2599) ehc->last_reset = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2600) if (reset == hardreset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2601) ehc->i.flags |= ATA_EHI_DID_HARDRESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2602) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2603) ehc->i.flags |= ATA_EHI_DID_SOFTRESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2605) rc = ata_do_reset(link, reset, classes, deadline, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2606) if (rc && rc != -EAGAIN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2607) failed_link = link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2608) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2611) /* hardreset slave link if existent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2612) if (slave && reset == hardreset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2613) int tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2615) if (verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2616) ata_link_info(slave, "hard resetting link\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2618) ata_eh_about_to_do(slave, NULL, ATA_EH_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2619) tmp = ata_do_reset(slave, reset, classes, deadline,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2620) false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2621) switch (tmp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2622) case -EAGAIN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2623) rc = -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2624) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2625) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2626) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2627) failed_link = slave;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2628) rc = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2629) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2630) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2631) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2633) /* perform follow-up SRST if necessary */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2634) if (reset == hardreset &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2635) ata_eh_followup_srst_needed(link, rc)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2636) reset = softreset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2638) if (!reset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2639) ata_link_err(link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2640) "follow-up softreset required but no softreset available\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2641) failed_link = link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2642) rc = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2643) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2644) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2646) ata_eh_about_to_do(link, NULL, ATA_EH_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2647) rc = ata_do_reset(link, reset, classes, deadline, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2648) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2649) failed_link = link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2650) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2651) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2652) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2653) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2654) if (verbose)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2655) ata_link_info(link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2656) "no reset method available, skipping reset\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2657) if (!(lflags & ATA_LFLAG_ASSUME_CLASS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2658) lflags |= ATA_LFLAG_ASSUME_ATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2659) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2661) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2662) * Post-reset processing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2663) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2664) ata_for_each_dev(dev, link, ALL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2665) /* After the reset, the device state is PIO 0 and the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2666) * controller state is undefined. Reset also wakes up
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2667) * drives from sleeping mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2668) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2669) dev->pio_mode = XFER_PIO_0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2670) dev->flags &= ~ATA_DFLAG_SLEEPING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2672) if (ata_phys_link_offline(ata_dev_phys_link(dev)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2673) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2674)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2675) /* apply class override */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2676) if (lflags & ATA_LFLAG_ASSUME_ATA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2677) classes[dev->devno] = ATA_DEV_ATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2678) else if (lflags & ATA_LFLAG_ASSUME_SEMB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2679) classes[dev->devno] = ATA_DEV_SEMB_UNSUP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2680) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2682) /* record current link speed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2683) if (sata_scr_read(link, SCR_STATUS, &sstatus) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2684) link->sata_spd = (sstatus >> 4) & 0xf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2685) if (slave && sata_scr_read(slave, SCR_STATUS, &sstatus) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2686) slave->sata_spd = (sstatus >> 4) & 0xf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2687)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2688) /* thaw the port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2689) if (ata_is_host_link(link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2690) ata_eh_thaw_port(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2691)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2692) /* postreset() should clear hardware SError. Although SError
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2693) * is cleared during link resume, clearing SError here is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2694) * necessary as some PHYs raise hotplug events after SRST.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2695) * This introduces race condition where hotplug occurs between
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2696) * reset and here. This race is mediated by cross checking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2697) * link onlineness and classification result later.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2698) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2699) if (postreset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2700) postreset(link, classes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2701) if (slave)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2702) postreset(slave, classes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2703) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2705) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2706) * Some controllers can't be frozen very well and may set spurious
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2707) * error conditions during reset. Clear accumulated error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2708) * information and re-thaw the port if frozen. As reset is the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2709) * final recovery action and we cross check link onlineness against
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2710) * device classification later, no hotplug event is lost by this.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2711) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2712) spin_lock_irqsave(link->ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2713) memset(&link->eh_info, 0, sizeof(link->eh_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2714) if (slave)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2715) memset(&slave->eh_info, 0, sizeof(link->eh_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2716) ap->pflags &= ~ATA_PFLAG_EH_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2717) spin_unlock_irqrestore(link->ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2718)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2719) if (ap->pflags & ATA_PFLAG_FROZEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2720) ata_eh_thaw_port(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2721)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2722) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2723) * Make sure onlineness and classification result correspond.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2724) * Hotplug could have happened during reset and some
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2725) * controllers fail to wait while a drive is spinning up after
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2726) * being hotplugged causing misdetection. By cross checking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2727) * link on/offlineness and classification result, those
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2728) * conditions can be reliably detected and retried.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2729) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2730) nr_unknown = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2731) ata_for_each_dev(dev, link, ALL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2732) if (ata_phys_link_online(ata_dev_phys_link(dev))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2733) if (classes[dev->devno] == ATA_DEV_UNKNOWN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2734) ata_dev_dbg(dev, "link online but device misclassified\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2735) classes[dev->devno] = ATA_DEV_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2736) nr_unknown++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2737) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2738) } else if (ata_phys_link_offline(ata_dev_phys_link(dev))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2739) if (ata_class_enabled(classes[dev->devno]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2740) ata_dev_dbg(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2741) "link offline, clearing class %d to NONE\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2742) classes[dev->devno]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2743) classes[dev->devno] = ATA_DEV_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2744) } else if (classes[dev->devno] == ATA_DEV_UNKNOWN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2745) ata_dev_dbg(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2746) "link status unknown, clearing UNKNOWN to NONE\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2747) classes[dev->devno] = ATA_DEV_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2748) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2749) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2751) if (classify && nr_unknown) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2752) if (try < max_tries) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2753) ata_link_warn(link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2754) "link online but %d devices misclassified, retrying\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2755) nr_unknown);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2756) failed_link = link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2757) rc = -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2758) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2759) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2760) ata_link_warn(link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2761) "link online but %d devices misclassified, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2762) "device detection might fail\n", nr_unknown);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2763) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2764)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2765) /* reset successful, schedule revalidation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2766) ata_eh_done(link, NULL, ATA_EH_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2767) if (slave)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2768) ata_eh_done(slave, NULL, ATA_EH_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2769) ehc->last_reset = jiffies; /* update to completion time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2770) ehc->i.action |= ATA_EH_REVALIDATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2771) link->lpm_policy = ATA_LPM_UNKNOWN; /* reset LPM state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2773) rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2774) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2775) /* clear hotplug flag */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2776) ehc->i.flags &= ~ATA_EHI_HOTPLUGGED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2777) if (slave)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2778) sehc->i.flags &= ~ATA_EHI_HOTPLUGGED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2780) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2781) ap->pflags &= ~ATA_PFLAG_RESETTING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2782) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2783)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2784) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2786) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2787) /* if SCR isn't accessible on a fan-out port, PMP needs to be reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2788) if (!ata_is_host_link(link) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2789) sata_scr_read(link, SCR_STATUS, &sstatus))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2790) rc = -ERESTART;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2791)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2792) if (try >= max_tries) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2793) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2794) * Thaw host port even if reset failed, so that the port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2795) * can be retried on the next phy event. This risks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2796) * repeated EH runs but seems to be a better tradeoff than
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2797) * shutting down a port after a botched hotplug attempt.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2798) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2799) if (ata_is_host_link(link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2800) ata_eh_thaw_port(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2801) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2802) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2803)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2804) now = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2805) if (time_before(now, deadline)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2806) unsigned long delta = deadline - now;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2808) ata_link_warn(failed_link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2809) "reset failed (errno=%d), retrying in %u secs\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2810) rc, DIV_ROUND_UP(jiffies_to_msecs(delta), 1000));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2811)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2812) ata_eh_release(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2813) while (delta)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2814) delta = schedule_timeout_uninterruptible(delta);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2815) ata_eh_acquire(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2816) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2817)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2818) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2819) * While disks spinup behind PMP, some controllers fail sending SRST.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2820) * They need to be reset - as well as the PMP - before retrying.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2821) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2822) if (rc == -ERESTART) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2823) if (ata_is_host_link(link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2824) ata_eh_thaw_port(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2825) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2826) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2827)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2828) if (try == max_tries - 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2829) sata_down_spd_limit(link, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2830) if (slave)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2831) sata_down_spd_limit(slave, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2832) } else if (rc == -EPIPE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2833) sata_down_spd_limit(failed_link, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2835) if (hardreset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2836) reset = hardreset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2837) goto retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2838) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2840) static inline void ata_eh_pull_park_action(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2841) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2842) struct ata_link *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2843) struct ata_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2844) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2846) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2847) * This function can be thought of as an extended version of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2848) * ata_eh_about_to_do() specially crafted to accommodate the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2849) * requirements of ATA_EH_PARK handling. Since the EH thread
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2850) * does not leave the do {} while () loop in ata_eh_recover as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2851) * long as the timeout for a park request to *one* device on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2852) * the port has not expired, and since we still want to pick
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2853) * up park requests to other devices on the same port or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2854) * timeout updates for the same device, we have to pull
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2855) * ATA_EH_PARK actions from eh_info into eh_context.i
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2856) * ourselves at the beginning of each pass over the loop.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2857) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2858) * Additionally, all write accesses to &ap->park_req_pending
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2859) * through reinit_completion() (see below) or complete_all()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2860) * (see ata_scsi_park_store()) are protected by the host lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2861) * As a result we have that park_req_pending.done is zero on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2862) * exit from this function, i.e. when ATA_EH_PARK actions for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2863) * *all* devices on port ap have been pulled into the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2864) * respective eh_context structs. If, and only if,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2865) * park_req_pending.done is non-zero by the time we reach
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2866) * wait_for_completion_timeout(), another ATA_EH_PARK action
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2867) * has been scheduled for at least one of the devices on port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2868) * ap and we have to cycle over the do {} while () loop in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2869) * ata_eh_recover() again.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2870) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2871)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2872) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2873) reinit_completion(&ap->park_req_pending);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2874) ata_for_each_link(link, ap, EDGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2875) ata_for_each_dev(dev, link, ALL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2876) struct ata_eh_info *ehi = &link->eh_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2877)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2878) link->eh_context.i.dev_action[dev->devno] |=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2879) ehi->dev_action[dev->devno] & ATA_EH_PARK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2880) ata_eh_clear_action(link, dev, ehi, ATA_EH_PARK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2881) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2882) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2883) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2884) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2885)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2886) static void ata_eh_park_issue_cmd(struct ata_device *dev, int park)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2887) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2888) struct ata_eh_context *ehc = &dev->link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2889) struct ata_taskfile tf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2890) unsigned int err_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2891)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2892) ata_tf_init(dev, &tf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2893) if (park) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2894) ehc->unloaded_mask |= 1 << dev->devno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2895) tf.command = ATA_CMD_IDLEIMMEDIATE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2896) tf.feature = 0x44;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2897) tf.lbal = 0x4c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2898) tf.lbam = 0x4e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2899) tf.lbah = 0x55;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2900) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2901) ehc->unloaded_mask &= ~(1 << dev->devno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2902) tf.command = ATA_CMD_CHK_POWER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2903) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2904)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2905) tf.flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2906) tf.protocol = ATA_PROT_NODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2907) err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2908) if (park && (err_mask || tf.lbal != 0xc4)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2909) ata_dev_err(dev, "head unload failed!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2910) ehc->unloaded_mask &= ~(1 << dev->devno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2911) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2912) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2913)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2914) static int ata_eh_revalidate_and_attach(struct ata_link *link,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2915) struct ata_device **r_failed_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2916) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2917) struct ata_port *ap = link->ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2918) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2919) struct ata_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2920) unsigned int new_mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2921) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2922) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2924) DPRINTK("ENTER\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2925)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2926) /* For PATA drive side cable detection to work, IDENTIFY must
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2927) * be done backwards such that PDIAG- is released by the slave
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2928) * device before the master device is identified.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2929) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2930) ata_for_each_dev(dev, link, ALL_REVERSE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2931) unsigned int action = ata_eh_dev_action(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2932) unsigned int readid_flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2934) if (ehc->i.flags & ATA_EHI_DID_RESET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2935) readid_flags |= ATA_READID_POSTRESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2936)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2937) if ((action & ATA_EH_REVALIDATE) && ata_dev_enabled(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2938) WARN_ON(dev->class == ATA_DEV_PMP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2940) if (ata_phys_link_offline(ata_dev_phys_link(dev))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2941) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2942) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2943) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2944)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2945) ata_eh_about_to_do(link, dev, ATA_EH_REVALIDATE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2946) rc = ata_dev_revalidate(dev, ehc->classes[dev->devno],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2947) readid_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2948) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2949) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2950)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2951) ata_eh_done(link, dev, ATA_EH_REVALIDATE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2952)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2953) /* Configuration may have changed, reconfigure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2954) * transfer mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2955) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2956) ehc->i.flags |= ATA_EHI_SETMODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2957)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2958) /* schedule the scsi_rescan_device() here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2959) schedule_work(&(ap->scsi_rescan_task));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2960) } else if (dev->class == ATA_DEV_UNKNOWN &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2961) ehc->tries[dev->devno] &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2962) ata_class_enabled(ehc->classes[dev->devno])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2963) /* Temporarily set dev->class, it will be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2964) * permanently set once all configurations are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2965) * complete. This is necessary because new
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2966) * device configuration is done in two
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2967) * separate loops.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2968) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2969) dev->class = ehc->classes[dev->devno];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2970)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2971) if (dev->class == ATA_DEV_PMP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2972) rc = sata_pmp_attach(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2973) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2974) rc = ata_dev_read_id(dev, &dev->class,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2975) readid_flags, dev->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2976)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2977) /* read_id might have changed class, store and reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2978) ehc->classes[dev->devno] = dev->class;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2979) dev->class = ATA_DEV_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2980)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2981) switch (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2982) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2983) /* clear error info accumulated during probe */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2984) ata_ering_clear(&dev->ering);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2985) new_mask |= 1 << dev->devno;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2986) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2987) case -ENOENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2988) /* IDENTIFY was issued to non-existent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2989) * device. No need to reset. Just
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2990) * thaw and ignore the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2991) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2992) ata_eh_thaw_port(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2993) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2994) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2995) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2996) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2997) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2998) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2999)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3000) /* PDIAG- should have been released, ask cable type if post-reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3001) if ((ehc->i.flags & ATA_EHI_DID_RESET) && ata_is_host_link(link)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3002) if (ap->ops->cable_detect)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3003) ap->cbl = ap->ops->cable_detect(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3004) ata_force_cbl(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3005) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3007) /* Configure new devices forward such that user doesn't see
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3008) * device detection messages backwards.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3009) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3010) ata_for_each_dev(dev, link, ALL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3011) if (!(new_mask & (1 << dev->devno)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3012) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3013)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3014) dev->class = ehc->classes[dev->devno];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3015)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3016) if (dev->class == ATA_DEV_PMP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3017) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3018)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3019) ehc->i.flags |= ATA_EHI_PRINTINFO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3020) rc = ata_dev_configure(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3021) ehc->i.flags &= ~ATA_EHI_PRINTINFO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3022) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3023) dev->class = ATA_DEV_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3024) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3025) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3026)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3027) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3028) ap->pflags |= ATA_PFLAG_SCSI_HOTPLUG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3029) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3030)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3031) /* new device discovered, configure xfermode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3032) ehc->i.flags |= ATA_EHI_SETMODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3033) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3034)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3035) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3036)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3037) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3038) *r_failed_dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3039) DPRINTK("EXIT rc=%d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3040) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3041) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3042)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3043) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3044) * ata_set_mode - Program timings and issue SET FEATURES - XFER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3045) * @link: link on which timings will be programmed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3046) * @r_failed_dev: out parameter for failed device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3047) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3048) * Set ATA device disk transfer mode (PIO3, UDMA6, etc.). If
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3049) * ata_set_mode() fails, pointer to the failing device is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3050) * returned in @r_failed_dev.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3051) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3052) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3053) * PCI/etc. bus probe sem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3054) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3055) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3056) * 0 on success, negative errno otherwise
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3057) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3058) int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3059) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3060) struct ata_port *ap = link->ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3061) struct ata_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3062) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3063)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3064) /* if data transfer is verified, clear DUBIOUS_XFER on ering top */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3065) ata_for_each_dev(dev, link, ENABLED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3066) if (!(dev->flags & ATA_DFLAG_DUBIOUS_XFER)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3067) struct ata_ering_entry *ent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3068)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3069) ent = ata_ering_top(&dev->ering);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3070) if (ent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3071) ent->eflags &= ~ATA_EFLAG_DUBIOUS_XFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3072) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3073) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3075) /* has private set_mode? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3076) if (ap->ops->set_mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3077) rc = ap->ops->set_mode(link, r_failed_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3078) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3079) rc = ata_do_set_mode(link, r_failed_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3080)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3081) /* if transfer mode has changed, set DUBIOUS_XFER on device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3082) ata_for_each_dev(dev, link, ENABLED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3083) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3084) u8 saved_xfer_mode = ehc->saved_xfer_mode[dev->devno];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3085) u8 saved_ncq = !!(ehc->saved_ncq_enabled & (1 << dev->devno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3087) if (dev->xfer_mode != saved_xfer_mode ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3088) ata_ncq_enabled(dev) != saved_ncq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3089) dev->flags |= ATA_DFLAG_DUBIOUS_XFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3090) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3091)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3092) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3093) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3094)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3095) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3096) * atapi_eh_clear_ua - Clear ATAPI UNIT ATTENTION after reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3097) * @dev: ATAPI device to clear UA for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3098) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3099) * Resets and other operations can make an ATAPI device raise
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3100) * UNIT ATTENTION which causes the next operation to fail. This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3101) * function clears UA.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3102) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3103) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3104) * EH context (may sleep).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3105) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3106) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3107) * 0 on success, -errno on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3108) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3109) static int atapi_eh_clear_ua(struct ata_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3110) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3111) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3113) for (i = 0; i < ATA_EH_UA_TRIES; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3114) u8 *sense_buffer = dev->link->ap->sector_buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3115) u8 sense_key = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3116) unsigned int err_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3118) err_mask = atapi_eh_tur(dev, &sense_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3119) if (err_mask != 0 && err_mask != AC_ERR_DEV) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3120) ata_dev_warn(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3121) "TEST_UNIT_READY failed (err_mask=0x%x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3122) err_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3123) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3126) if (!err_mask || sense_key != UNIT_ATTENTION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3127) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3129) err_mask = atapi_eh_request_sense(dev, sense_buffer, sense_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3130) if (err_mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3131) ata_dev_warn(dev, "failed to clear "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3132) "UNIT ATTENTION (err_mask=0x%x)\n", err_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3133) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3137) ata_dev_warn(dev, "UNIT ATTENTION persists after %d tries\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3138) ATA_EH_UA_TRIES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3140) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3143) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3144) * ata_eh_maybe_retry_flush - Retry FLUSH if necessary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3145) * @dev: ATA device which may need FLUSH retry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3146) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3147) * If @dev failed FLUSH, it needs to be reported upper layer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3148) * immediately as it means that @dev failed to remap and already
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3149) * lost at least a sector and further FLUSH retrials won't make
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3150) * any difference to the lost sector. However, if FLUSH failed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3151) * for other reasons, for example transmission error, FLUSH needs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3152) * to be retried.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3153) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3154) * This function determines whether FLUSH failure retry is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3155) * necessary and performs it if so.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3156) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3157) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3158) * 0 if EH can continue, -errno if EH needs to be repeated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3159) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3160) static int ata_eh_maybe_retry_flush(struct ata_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3161) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3162) struct ata_link *link = dev->link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3163) struct ata_port *ap = link->ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3164) struct ata_queued_cmd *qc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3165) struct ata_taskfile tf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3166) unsigned int err_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3167) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3169) /* did flush fail for this device? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3170) if (!ata_tag_valid(link->active_tag))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3171) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3173) qc = __ata_qc_from_tag(ap, link->active_tag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3174) if (qc->dev != dev || (qc->tf.command != ATA_CMD_FLUSH_EXT &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3175) qc->tf.command != ATA_CMD_FLUSH))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3176) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3178) /* if the device failed it, it should be reported to upper layers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3179) if (qc->err_mask & AC_ERR_DEV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3180) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3182) /* flush failed for some other reason, give it another shot */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3183) ata_tf_init(dev, &tf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3185) tf.command = qc->tf.command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3186) tf.flags |= ATA_TFLAG_DEVICE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3187) tf.protocol = ATA_PROT_NODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3189) ata_dev_warn(dev, "retrying FLUSH 0x%x Emask 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3190) tf.command, qc->err_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3192) err_mask = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3193) if (!err_mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3194) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3195) * FLUSH is complete but there's no way to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3196) * successfully complete a failed command from EH.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3197) * Making sure retry is allowed at least once and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3198) * retrying it should do the trick - whatever was in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3199) * the cache is already on the platter and this won't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3200) * cause infinite loop.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3201) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3202) qc->scsicmd->allowed = max(qc->scsicmd->allowed, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3203) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3204) ata_dev_warn(dev, "FLUSH failed Emask 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3205) err_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3206) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3208) /* if device failed it, report it to upper layers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3209) if (err_mask & AC_ERR_DEV) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3210) qc->err_mask |= AC_ERR_DEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3211) qc->result_tf = tf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3212) if (!(ap->pflags & ATA_PFLAG_FROZEN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3213) rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3216) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3219) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3220) * ata_eh_set_lpm - configure SATA interface power management
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3221) * @link: link to configure power management
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3222) * @policy: the link power management policy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3223) * @r_failed_dev: out parameter for failed device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3224) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3225) * Enable SATA Interface power management. This will enable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3226) * Device Interface Power Management (DIPM) for min_power and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3227) * medium_power_with_dipm policies, and then call driver specific
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3228) * callbacks for enabling Host Initiated Power management.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3229) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3230) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3231) * EH context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3232) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3233) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3234) * 0 on success, -errno on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3235) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3236) static int ata_eh_set_lpm(struct ata_link *link, enum ata_lpm_policy policy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3237) struct ata_device **r_failed_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3238) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3239) struct ata_port *ap = ata_is_host_link(link) ? link->ap : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3240) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3241) struct ata_device *dev, *link_dev = NULL, *lpm_dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3242) enum ata_lpm_policy old_policy = link->lpm_policy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3243) bool no_dipm = link->ap->flags & ATA_FLAG_NO_DIPM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3244) unsigned int hints = ATA_LPM_EMPTY | ATA_LPM_HIPM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3245) unsigned int err_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3246) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3248) /* if the link or host doesn't do LPM, noop */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3249) if (!IS_ENABLED(CONFIG_SATA_HOST) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3250) (link->flags & ATA_LFLAG_NO_LPM) || (ap && !ap->ops->set_lpm))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3251) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3253) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3254) * DIPM is enabled only for MIN_POWER as some devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3255) * misbehave when the host NACKs transition to SLUMBER. Order
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3256) * device and link configurations such that the host always
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3257) * allows DIPM requests.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3258) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3259) ata_for_each_dev(dev, link, ENABLED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3260) bool hipm = ata_id_has_hipm(dev->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3261) bool dipm = ata_id_has_dipm(dev->id) && !no_dipm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3263) /* find the first enabled and LPM enabled devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3264) if (!link_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3265) link_dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3267) if (!lpm_dev && (hipm || dipm))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3268) lpm_dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3270) hints &= ~ATA_LPM_EMPTY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3271) if (!hipm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3272) hints &= ~ATA_LPM_HIPM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3274) /* disable DIPM before changing link config */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3275) if (policy < ATA_LPM_MED_POWER_WITH_DIPM && dipm) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3276) err_mask = ata_dev_set_feature(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3277) SETFEATURES_SATA_DISABLE, SATA_DIPM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3278) if (err_mask && err_mask != AC_ERR_DEV) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3279) ata_dev_warn(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3280) "failed to disable DIPM, Emask 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3281) err_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3282) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3283) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3286) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3288) if (ap) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3289) rc = ap->ops->set_lpm(link, policy, hints);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3290) if (!rc && ap->slave_link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3291) rc = ap->ops->set_lpm(ap->slave_link, policy, hints);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3292) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3293) rc = sata_pmp_set_lpm(link, policy, hints);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3295) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3296) * Attribute link config failure to the first (LPM) enabled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3297) * device on the link.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3298) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3299) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3300) if (rc == -EOPNOTSUPP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3301) link->flags |= ATA_LFLAG_NO_LPM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3302) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3303) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3304) dev = lpm_dev ? lpm_dev : link_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3305) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3308) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3309) * Low level driver acked the transition. Issue DIPM command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3310) * with the new policy set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3311) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3312) link->lpm_policy = policy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3313) if (ap && ap->slave_link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3314) ap->slave_link->lpm_policy = policy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3316) /* host config updated, enable DIPM if transitioning to MIN_POWER */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3317) ata_for_each_dev(dev, link, ENABLED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3318) if (policy >= ATA_LPM_MED_POWER_WITH_DIPM && !no_dipm &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3319) ata_id_has_dipm(dev->id)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3320) err_mask = ata_dev_set_feature(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3321) SETFEATURES_SATA_ENABLE, SATA_DIPM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3322) if (err_mask && err_mask != AC_ERR_DEV) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3323) ata_dev_warn(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3324) "failed to enable DIPM, Emask 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3325) err_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3326) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3327) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3328) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3332) link->last_lpm_change = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3333) link->flags |= ATA_LFLAG_CHANGED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3335) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3337) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3338) /* restore the old policy */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3339) link->lpm_policy = old_policy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3340) if (ap && ap->slave_link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3341) ap->slave_link->lpm_policy = old_policy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3343) /* if no device or only one more chance is left, disable LPM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3344) if (!dev || ehc->tries[dev->devno] <= 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3345) ata_link_warn(link, "disabling LPM on the link\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3346) link->flags |= ATA_LFLAG_NO_LPM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3347) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3348) if (r_failed_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3349) *r_failed_dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3350) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3353) int ata_link_nr_enabled(struct ata_link *link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3354) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3355) struct ata_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3356) int cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3358) ata_for_each_dev(dev, link, ENABLED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3359) cnt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3360) return cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3363) static int ata_link_nr_vacant(struct ata_link *link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3364) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3365) struct ata_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3366) int cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3368) ata_for_each_dev(dev, link, ALL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3369) if (dev->class == ATA_DEV_UNKNOWN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3370) cnt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3371) return cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3374) static int ata_eh_skip_recovery(struct ata_link *link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3375) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3376) struct ata_port *ap = link->ap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3377) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3378) struct ata_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3380) /* skip disabled links */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3381) if (link->flags & ATA_LFLAG_DISABLED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3382) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3384) /* skip if explicitly requested */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3385) if (ehc->i.flags & ATA_EHI_NO_RECOVERY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3386) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3388) /* thaw frozen port and recover failed devices */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3389) if ((ap->pflags & ATA_PFLAG_FROZEN) || ata_link_nr_enabled(link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3390) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3392) /* reset at least once if reset is requested */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3393) if ((ehc->i.action & ATA_EH_RESET) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3394) !(ehc->i.flags & ATA_EHI_DID_RESET))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3395) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3397) /* skip if class codes for all vacant slots are ATA_DEV_NONE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3398) ata_for_each_dev(dev, link, ALL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3399) if (dev->class == ATA_DEV_UNKNOWN &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3400) ehc->classes[dev->devno] != ATA_DEV_NONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3401) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3402) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3404) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3407) static int ata_count_probe_trials_cb(struct ata_ering_entry *ent, void *void_arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3408) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3409) u64 interval = msecs_to_jiffies(ATA_EH_PROBE_TRIAL_INTERVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3410) u64 now = get_jiffies_64();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3411) int *trials = void_arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3413) if ((ent->eflags & ATA_EFLAG_OLD_ER) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3414) (ent->timestamp < now - min(now, interval)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3415) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3417) (*trials)++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3418) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3421) static int ata_eh_schedule_probe(struct ata_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3422) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3423) struct ata_eh_context *ehc = &dev->link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3424) struct ata_link *link = ata_dev_phys_link(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3425) int trials = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3427) if (!(ehc->i.probe_mask & (1 << dev->devno)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3428) (ehc->did_probe_mask & (1 << dev->devno)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3429) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3431) ata_eh_detach_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3432) ata_dev_init(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3433) ehc->did_probe_mask |= (1 << dev->devno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3434) ehc->i.action |= ATA_EH_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3435) ehc->saved_xfer_mode[dev->devno] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3436) ehc->saved_ncq_enabled &= ~(1 << dev->devno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3438) /* the link maybe in a deep sleep, wake it up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3439) if (link->lpm_policy > ATA_LPM_MAX_POWER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3440) if (ata_is_host_link(link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3441) link->ap->ops->set_lpm(link, ATA_LPM_MAX_POWER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3442) ATA_LPM_EMPTY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3443) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3444) sata_pmp_set_lpm(link, ATA_LPM_MAX_POWER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3445) ATA_LPM_EMPTY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3446) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3448) /* Record and count probe trials on the ering. The specific
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3449) * error mask used is irrelevant. Because a successful device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3450) * detection clears the ering, this count accumulates only if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3451) * there are consecutive failed probes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3452) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3453) * If the count is equal to or higher than ATA_EH_PROBE_TRIALS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3454) * in the last ATA_EH_PROBE_TRIAL_INTERVAL, link speed is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3455) * forced to 1.5Gbps.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3456) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3457) * This is to work around cases where failed link speed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3458) * negotiation results in device misdetection leading to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3459) * infinite DEVXCHG or PHRDY CHG events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3460) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3461) ata_ering_record(&dev->ering, 0, AC_ERR_OTHER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3462) ata_ering_map(&dev->ering, ata_count_probe_trials_cb, &trials);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3464) if (trials > ATA_EH_PROBE_TRIALS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3465) sata_down_spd_limit(link, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3467) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3468) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3470) static int ata_eh_handle_dev_fail(struct ata_device *dev, int err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3471) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3472) struct ata_eh_context *ehc = &dev->link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3474) /* -EAGAIN from EH routine indicates retry without prejudice.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3475) * The requester is responsible for ensuring forward progress.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3476) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3477) if (err != -EAGAIN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3478) ehc->tries[dev->devno]--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3480) switch (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3481) case -ENODEV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3482) /* device missing or wrong IDENTIFY data, schedule probing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3483) ehc->i.probe_mask |= (1 << dev->devno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3484) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3485) case -EINVAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3486) /* give it just one more chance */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3487) ehc->tries[dev->devno] = min(ehc->tries[dev->devno], 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3488) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3489) case -EIO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3490) if (ehc->tries[dev->devno] == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3491) /* This is the last chance, better to slow
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3492) * down than lose it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3493) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3494) sata_down_spd_limit(ata_dev_phys_link(dev), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3495) if (dev->pio_mode > XFER_PIO_0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3496) ata_down_xfermask_limit(dev, ATA_DNXFER_PIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3498) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3500) if (ata_dev_enabled(dev) && !ehc->tries[dev->devno]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3501) /* disable device if it has used up all its chances */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3502) ata_dev_disable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3504) /* detach if offline */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3505) if (ata_phys_link_offline(ata_dev_phys_link(dev)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3506) ata_eh_detach_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3508) /* schedule probe if necessary */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3509) if (ata_eh_schedule_probe(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3510) ehc->tries[dev->devno] = ATA_EH_DEV_TRIES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3511) memset(ehc->cmd_timeout_idx[dev->devno], 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3512) sizeof(ehc->cmd_timeout_idx[dev->devno]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3515) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3516) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3517) ehc->i.action |= ATA_EH_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3518) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3519) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3520) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3522) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3523) * ata_eh_recover - recover host port after error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3524) * @ap: host port to recover
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3525) * @prereset: prereset method (can be NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3526) * @softreset: softreset method (can be NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3527) * @hardreset: hardreset method (can be NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3528) * @postreset: postreset method (can be NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3529) * @r_failed_link: out parameter for failed link
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3530) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3531) * This is the alpha and omega, eum and yang, heart and soul of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3532) * libata exception handling. On entry, actions required to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3533) * recover each link and hotplug requests are recorded in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3534) * link's eh_context. This function executes all the operations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3535) * with appropriate retrials and fallbacks to resurrect failed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3536) * devices, detach goners and greet newcomers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3537) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3538) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3539) * Kernel thread context (may sleep).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3540) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3541) * RETURNS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3542) * 0 on success, -errno on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3543) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3544) int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3545) ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3546) ata_postreset_fn_t postreset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3547) struct ata_link **r_failed_link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3548) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3549) struct ata_link *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3550) struct ata_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3551) int rc, nr_fails;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3552) unsigned long flags, deadline;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3554) DPRINTK("ENTER\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3556) /* prep for recovery */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3557) ata_for_each_link(link, ap, EDGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3558) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3560) /* re-enable link? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3561) if (ehc->i.action & ATA_EH_ENABLE_LINK) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3562) ata_eh_about_to_do(link, NULL, ATA_EH_ENABLE_LINK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3563) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3564) link->flags &= ~ATA_LFLAG_DISABLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3565) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3566) ata_eh_done(link, NULL, ATA_EH_ENABLE_LINK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3567) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3569) ata_for_each_dev(dev, link, ALL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3570) if (link->flags & ATA_LFLAG_NO_RETRY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3571) ehc->tries[dev->devno] = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3572) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3573) ehc->tries[dev->devno] = ATA_EH_DEV_TRIES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3575) /* collect port action mask recorded in dev actions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3576) ehc->i.action |= ehc->i.dev_action[dev->devno] &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3577) ~ATA_EH_PERDEV_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3578) ehc->i.dev_action[dev->devno] &= ATA_EH_PERDEV_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3580) /* process hotplug request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3581) if (dev->flags & ATA_DFLAG_DETACH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3582) ata_eh_detach_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3584) /* schedule probe if necessary */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3585) if (!ata_dev_enabled(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3586) ata_eh_schedule_probe(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3587) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3588) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3590) retry:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3591) rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3593) /* if UNLOADING, finish immediately */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3594) if (ap->pflags & ATA_PFLAG_UNLOADING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3595) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3597) /* prep for EH */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3598) ata_for_each_link(link, ap, EDGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3599) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3601) /* skip EH if possible. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3602) if (ata_eh_skip_recovery(link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3603) ehc->i.action = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3605) ata_for_each_dev(dev, link, ALL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3606) ehc->classes[dev->devno] = ATA_DEV_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3607) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3609) /* reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3610) ata_for_each_link(link, ap, EDGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3611) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3613) if (!(ehc->i.action & ATA_EH_RESET))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3614) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3616) rc = ata_eh_reset(link, ata_link_nr_vacant(link),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3617) prereset, softreset, hardreset, postreset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3618) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3619) ata_link_err(link, "reset failed, giving up\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3620) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3621) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3622) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3624) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3625) unsigned long now;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3627) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3628) * clears ATA_EH_PARK in eh_info and resets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3629) * ap->park_req_pending
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3630) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3631) ata_eh_pull_park_action(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3633) deadline = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3634) ata_for_each_link(link, ap, EDGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3635) ata_for_each_dev(dev, link, ALL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3636) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3637) unsigned long tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3639) if (dev->class != ATA_DEV_ATA &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3640) dev->class != ATA_DEV_ZAC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3641) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3642) if (!(ehc->i.dev_action[dev->devno] &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3643) ATA_EH_PARK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3644) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3645) tmp = dev->unpark_deadline;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3646) if (time_before(deadline, tmp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3647) deadline = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3648) else if (time_before_eq(tmp, jiffies))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3649) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3650) if (ehc->unloaded_mask & (1 << dev->devno))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3651) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3653) ata_eh_park_issue_cmd(dev, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3654) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3655) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3657) now = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3658) if (time_before_eq(deadline, now))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3659) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3661) ata_eh_release(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3662) deadline = wait_for_completion_timeout(&ap->park_req_pending,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3663) deadline - now);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3664) ata_eh_acquire(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3665) } while (deadline);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3666) ata_for_each_link(link, ap, EDGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3667) ata_for_each_dev(dev, link, ALL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3668) if (!(link->eh_context.unloaded_mask &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3669) (1 << dev->devno)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3670) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3672) ata_eh_park_issue_cmd(dev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3673) ata_eh_done(link, dev, ATA_EH_PARK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3674) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3675) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3677) /* the rest */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3678) nr_fails = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3679) ata_for_each_link(link, ap, PMP_FIRST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3680) struct ata_eh_context *ehc = &link->eh_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3682) if (sata_pmp_attached(ap) && ata_is_host_link(link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3683) goto config_lpm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3685) /* revalidate existing devices and attach new ones */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3686) rc = ata_eh_revalidate_and_attach(link, &dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3687) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3688) goto rest_fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3689)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3690) /* if PMP got attached, return, pmp EH will take care of it */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3691) if (link->device->class == ATA_DEV_PMP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3692) ehc->i.action = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3693) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3694) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3696) /* configure transfer mode if necessary */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3697) if (ehc->i.flags & ATA_EHI_SETMODE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3698) rc = ata_set_mode(link, &dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3699) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3700) goto rest_fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3701) ehc->i.flags &= ~ATA_EHI_SETMODE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3702) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3704) /* If reset has been issued, clear UA to avoid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3705) * disrupting the current users of the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3706) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3707) if (ehc->i.flags & ATA_EHI_DID_RESET) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3708) ata_for_each_dev(dev, link, ALL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3709) if (dev->class != ATA_DEV_ATAPI)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3710) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3711) rc = atapi_eh_clear_ua(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3712) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3713) goto rest_fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3714) if (zpodd_dev_enabled(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3715) zpodd_post_poweron(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3716) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3717) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3718)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3719) /* retry flush if necessary */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3720) ata_for_each_dev(dev, link, ALL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3721) if (dev->class != ATA_DEV_ATA &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3722) dev->class != ATA_DEV_ZAC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3723) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3724) rc = ata_eh_maybe_retry_flush(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3725) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3726) goto rest_fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3727) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3728)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3729) config_lpm:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3730) /* configure link power saving */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3731) if (link->lpm_policy != ap->target_lpm_policy) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3732) rc = ata_eh_set_lpm(link, ap->target_lpm_policy, &dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3733) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3734) goto rest_fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3735) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3737) /* this link is okay now */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3738) ehc->i.flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3739) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3740)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3741) rest_fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3742) nr_fails++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3743) if (dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3744) ata_eh_handle_dev_fail(dev, rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3746) if (ap->pflags & ATA_PFLAG_FROZEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3747) /* PMP reset requires working host port.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3748) * Can't retry if it's frozen.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3749) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3750) if (sata_pmp_attached(ap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3751) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3752) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3753) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3754) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3756) if (nr_fails)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3757) goto retry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3759) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3760) if (rc && r_failed_link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3761) *r_failed_link = link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3763) DPRINTK("EXIT, rc=%d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3764) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3765) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3767) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3768) * ata_eh_finish - finish up EH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3769) * @ap: host port to finish EH for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3770) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3771) * Recovery is complete. Clean up EH states and retry or finish
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3772) * failed qcs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3773) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3774) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3775) * None.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3776) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3777) void ata_eh_finish(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3778) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3779) struct ata_queued_cmd *qc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3780) int tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3782) /* retry or finish qcs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3783) ata_qc_for_each_raw(ap, qc, tag) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3784) if (!(qc->flags & ATA_QCFLAG_FAILED))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3785) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3787) if (qc->err_mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3788) /* FIXME: Once EH migration is complete,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3789) * generate sense data in this function,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3790) * considering both err_mask and tf.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3791) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3792) if (qc->flags & ATA_QCFLAG_RETRY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3793) ata_eh_qc_retry(qc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3794) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3795) ata_eh_qc_complete(qc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3796) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3797) if (qc->flags & ATA_QCFLAG_SENSE_VALID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3798) ata_eh_qc_complete(qc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3799) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3800) /* feed zero TF to sense generation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3801) memset(&qc->result_tf, 0, sizeof(qc->result_tf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3802) ata_eh_qc_retry(qc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3803) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3804) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3805) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3807) /* make sure nr_active_links is zero after EH */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3808) WARN_ON(ap->nr_active_links);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3809) ap->nr_active_links = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3810) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3811)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3812) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3813) * ata_do_eh - do standard error handling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3814) * @ap: host port to handle error for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3815) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3816) * @prereset: prereset method (can be NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3817) * @softreset: softreset method (can be NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3818) * @hardreset: hardreset method (can be NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3819) * @postreset: postreset method (can be NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3820) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3821) * Perform standard error handling sequence.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3822) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3823) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3824) * Kernel thread context (may sleep).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3825) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3826) void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3827) ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3828) ata_postreset_fn_t postreset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3829) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3830) struct ata_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3831) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3833) ata_eh_autopsy(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3834) ata_eh_report(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3836) rc = ata_eh_recover(ap, prereset, softreset, hardreset, postreset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3837) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3838) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3839) ata_for_each_dev(dev, &ap->link, ALL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3840) ata_dev_disable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3841) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3843) ata_eh_finish(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3844) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3846) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3847) * ata_std_error_handler - standard error handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3848) * @ap: host port to handle error for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3849) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3850) * Standard error handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3851) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3852) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3853) * Kernel thread context (may sleep).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3854) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3855) void ata_std_error_handler(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3856) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3857) struct ata_port_operations *ops = ap->ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3858) ata_reset_fn_t hardreset = ops->hardreset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3860) /* ignore built-in hardreset if SCR access is not available */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3861) if (hardreset == sata_std_hardreset && !sata_scr_valid(&ap->link))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3862) hardreset = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3864) ata_do_eh(ap, ops->prereset, ops->softreset, hardreset, ops->postreset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3865) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3866) EXPORT_SYMBOL_GPL(ata_std_error_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3867)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3868) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3869) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3870) * ata_eh_handle_port_suspend - perform port suspend operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3871) * @ap: port to suspend
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3872) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3873) * Suspend @ap.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3874) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3875) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3876) * Kernel thread context (may sleep).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3877) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3878) static void ata_eh_handle_port_suspend(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3879) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3880) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3881) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3882) struct ata_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3883)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3884) /* are we suspending? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3885) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3886) if (!(ap->pflags & ATA_PFLAG_PM_PENDING) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3887) ap->pm_mesg.event & PM_EVENT_RESUME) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3888) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3889) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3890) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3891) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3893) WARN_ON(ap->pflags & ATA_PFLAG_SUSPENDED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3894)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3895) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3896) * If we have a ZPODD attached, check its zero
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3897) * power ready status before the port is frozen.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3898) * Only needed for runtime suspend.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3899) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3900) if (PMSG_IS_AUTO(ap->pm_mesg)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3901) ata_for_each_dev(dev, &ap->link, ENABLED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3902) if (zpodd_dev_enabled(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3903) zpodd_on_suspend(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3904) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3905) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3907) /* tell ACPI we're suspending */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3908) rc = ata_acpi_on_suspend(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3909) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3910) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3911)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3912) /* suspend */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3913) ata_eh_freeze_port(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3915) if (ap->ops->port_suspend)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3916) rc = ap->ops->port_suspend(ap, ap->pm_mesg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3917)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3918) ata_acpi_set_state(ap, ap->pm_mesg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3919) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3920) /* update the flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3921) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3922)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3923) ap->pflags &= ~ATA_PFLAG_PM_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3924) if (rc == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3925) ap->pflags |= ATA_PFLAG_SUSPENDED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3926) else if (ap->pflags & ATA_PFLAG_FROZEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3927) ata_port_schedule_eh(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3929) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3930)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3931) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3932) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3933)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3934) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3935) * ata_eh_handle_port_resume - perform port resume operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3936) * @ap: port to resume
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3937) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3938) * Resume @ap.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3939) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3940) * LOCKING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3941) * Kernel thread context (may sleep).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3942) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3943) static void ata_eh_handle_port_resume(struct ata_port *ap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3944) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3945) struct ata_link *link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3946) struct ata_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3947) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3949) /* are we resuming? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3950) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3951) if (!(ap->pflags & ATA_PFLAG_PM_PENDING) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3952) !(ap->pm_mesg.event & PM_EVENT_RESUME)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3953) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3954) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3955) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3956) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3957)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3958) WARN_ON(!(ap->pflags & ATA_PFLAG_SUSPENDED));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3959)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3960) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3961) * Error timestamps are in jiffies which doesn't run while
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3962) * suspended and PHY events during resume isn't too uncommon.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3963) * When the two are combined, it can lead to unnecessary speed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3964) * downs if the machine is suspended and resumed repeatedly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3965) * Clear error history.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3966) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3967) ata_for_each_link(link, ap, HOST_FIRST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3968) ata_for_each_dev(dev, link, ALL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3969) ata_ering_clear(&dev->ering);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3970)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3971) ata_acpi_set_state(ap, ap->pm_mesg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3972)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3973) if (ap->ops->port_resume)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3974) ap->ops->port_resume(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3975)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3976) /* tell ACPI that we're resuming */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3977) ata_acpi_on_resume(ap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3978)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3979) /* update the flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3980) spin_lock_irqsave(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3981) ap->pflags &= ~(ATA_PFLAG_PM_PENDING | ATA_PFLAG_SUSPENDED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3982) spin_unlock_irqrestore(ap->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3983) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3984) #endif /* CONFIG_PM */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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