^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) * SBP2 driver (SCSI over IEEE1394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2005-2007 Kristian Hoegsberg <krh@bitplanet.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * The basic structure of this driver is based on the old storage driver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * drivers/ieee1394/sbp2.c, originally written by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * James Goodwin <jamesg@filanet.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * with later contributions and ongoing maintenance from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Ben Collins <bcollins@debian.org>,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * Stefan Richter <stefanr@s5r6.in-berlin.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * and many others.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/bug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/completion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/dma-mapping.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/firewire.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/firewire-constants.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/jiffies.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/kref.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/mod_devicetable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/scatterlist.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <linux/stringify.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <linux/workqueue.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include <asm/byteorder.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include <scsi/scsi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include <scsi/scsi_cmnd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include <scsi/scsi_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include <scsi/scsi_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * So far only bridges from Oxford Semiconductor are known to support
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * concurrent logins. Depending on firmware, four or two concurrent logins
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * are possible on OXFW911 and newer Oxsemi bridges.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * Concurrent logins are useful together with cluster filesystems.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static bool sbp2_param_exclusive_login = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) module_param_named(exclusive_login, sbp2_param_exclusive_login, bool, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) MODULE_PARM_DESC(exclusive_login, "Exclusive login to sbp2 device "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) "(default = Y, use N for concurrent initiators)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * Flags for firmware oddities
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * - 128kB max transfer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * Limit transfer size. Necessary for some old bridges.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * - 36 byte inquiry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * When scsi_mod probes the device, let the inquiry command look like that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * from MS Windows.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * - skip mode page 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * Suppress sending of mode_sense for mode page 8 if the device pretends to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * support the SCSI Primary Block commands instead of Reduced Block Commands.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * - fix capacity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * Tell sd_mod to correct the last sector number reported by read_capacity.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * Avoids access beyond actual disk limits on devices with an off-by-one bug.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * Don't use this with devices which don't have this bug.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) * - delay inquiry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * Wait extra SBP2_INQUIRY_DELAY seconds after login before SCSI inquiry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * - power condition
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * Set the power condition field in the START STOP UNIT commands sent by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * sd_mod on suspend, resume, and shutdown (if manage_start_stop is on).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * Some disks need this to spin down or to resume properly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * - override internal blacklist
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * Instead of adding to the built-in blacklist, use only the workarounds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * specified in the module load parameter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * Useful if a blacklist entry interfered with a non-broken device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define SBP2_WORKAROUND_128K_MAX_TRANS 0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #define SBP2_WORKAROUND_INQUIRY_36 0x2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #define SBP2_WORKAROUND_MODE_SENSE_8 0x4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define SBP2_WORKAROUND_FIX_CAPACITY 0x8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) #define SBP2_WORKAROUND_DELAY_INQUIRY 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #define SBP2_INQUIRY_DELAY 12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #define SBP2_WORKAROUND_POWER_CONDITION 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #define SBP2_WORKAROUND_OVERRIDE 0x100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static int sbp2_param_workarounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) module_param_named(workarounds, sbp2_param_workarounds, int, 0644);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) MODULE_PARM_DESC(workarounds, "Work around device bugs (default = 0"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) ", 128kB max transfer = " __stringify(SBP2_WORKAROUND_128K_MAX_TRANS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) ", 36 byte inquiry = " __stringify(SBP2_WORKAROUND_INQUIRY_36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) ", skip mode page 8 = " __stringify(SBP2_WORKAROUND_MODE_SENSE_8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) ", fix capacity = " __stringify(SBP2_WORKAROUND_FIX_CAPACITY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) ", delay inquiry = " __stringify(SBP2_WORKAROUND_DELAY_INQUIRY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) ", set power condition in start stop unit = "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) __stringify(SBP2_WORKAROUND_POWER_CONDITION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) ", override internal blacklist = " __stringify(SBP2_WORKAROUND_OVERRIDE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) ", or a combination)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * We create one struct sbp2_logical_unit per SBP-2 Logical Unit Number Entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * and one struct scsi_device per sbp2_logical_unit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct sbp2_logical_unit {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct sbp2_target *tgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct list_head link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct fw_address_handler address_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct list_head orb_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) u64 command_block_agent_address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) u16 lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) int login_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * The generation is updated once we've logged in or reconnected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * to the logical unit. Thus, I/O to the device will automatically
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * fail and get retried if it happens in a window where the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * is not ready, e.g. after a bus reset but before we reconnect.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) int generation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) int retries;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) work_func_t workfn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) struct delayed_work work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) bool has_sdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) bool blocked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static void sbp2_queue_work(struct sbp2_logical_unit *lu, unsigned long delay)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) queue_delayed_work(fw_workqueue, &lu->work, delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * We create one struct sbp2_target per IEEE 1212 Unit Directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * and one struct Scsi_Host per sbp2_target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) struct sbp2_target {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct fw_unit *unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) struct list_head lu_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) u64 management_agent_address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) u64 guid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) int directory_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) int node_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) int address_high;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) unsigned int workarounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) unsigned int mgt_orb_timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) unsigned int max_payload;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) int dont_block; /* counter for each logical unit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) int blocked; /* ditto */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static struct fw_device *target_parent_device(struct sbp2_target *tgt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) return fw_parent_device(tgt->unit);
^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) static const struct device *tgt_dev(const struct sbp2_target *tgt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) return &tgt->unit->device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static const struct device *lu_dev(const struct sbp2_logical_unit *lu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) return &lu->tgt->unit->device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) /* Impossible login_id, to detect logout attempt before successful login */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) #define INVALID_LOGIN_ID 0x10000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) #define SBP2_ORB_TIMEOUT 2000U /* Timeout in ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) #define SBP2_ORB_NULL 0x80000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) #define SBP2_RETRY_LIMIT 0xf /* 15 retries */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) #define SBP2_CYCLE_LIMIT (0xc8 << 12) /* 200 125us cycles */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) * There is no transport protocol limit to the CDB length, but we implement
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * a fixed length only. 16 bytes is enough for disks larger than 2 TB.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) #define SBP2_MAX_CDB_SIZE 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) * The maximum SBP-2 data buffer size is 0xffff. We quadlet-align this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * for compatibility with earlier versions of this driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) #define SBP2_MAX_SEG_SIZE 0xfffc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) /* Unit directory keys */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) #define SBP2_CSR_UNIT_CHARACTERISTICS 0x3a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) #define SBP2_CSR_FIRMWARE_REVISION 0x3c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) #define SBP2_CSR_LOGICAL_UNIT_NUMBER 0x14
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) #define SBP2_CSR_UNIT_UNIQUE_ID 0x8d
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) #define SBP2_CSR_LOGICAL_UNIT_DIRECTORY 0xd4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) /* Management orb opcodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) #define SBP2_LOGIN_REQUEST 0x0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) #define SBP2_QUERY_LOGINS_REQUEST 0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) #define SBP2_RECONNECT_REQUEST 0x3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) #define SBP2_SET_PASSWORD_REQUEST 0x4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) #define SBP2_LOGOUT_REQUEST 0x7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) #define SBP2_ABORT_TASK_REQUEST 0xb
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) #define SBP2_ABORT_TASK_SET 0xc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) #define SBP2_LOGICAL_UNIT_RESET 0xe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) #define SBP2_TARGET_RESET_REQUEST 0xf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) /* Offsets for command block agent registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) #define SBP2_AGENT_STATE 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) #define SBP2_AGENT_RESET 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) #define SBP2_ORB_POINTER 0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) #define SBP2_DOORBELL 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) #define SBP2_UNSOLICITED_STATUS_ENABLE 0x14
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) /* Status write response codes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) #define SBP2_STATUS_REQUEST_COMPLETE 0x0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) #define SBP2_STATUS_TRANSPORT_FAILURE 0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) #define SBP2_STATUS_ILLEGAL_REQUEST 0x2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) #define SBP2_STATUS_VENDOR_DEPENDENT 0x3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) #define STATUS_GET_ORB_HIGH(v) ((v).status & 0xffff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) #define STATUS_GET_SBP_STATUS(v) (((v).status >> 16) & 0xff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) #define STATUS_GET_LEN(v) (((v).status >> 24) & 0x07)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) #define STATUS_GET_DEAD(v) (((v).status >> 27) & 0x01)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) #define STATUS_GET_RESPONSE(v) (((v).status >> 28) & 0x03)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) #define STATUS_GET_SOURCE(v) (((v).status >> 30) & 0x03)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) #define STATUS_GET_ORB_LOW(v) ((v).orb_low)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) #define STATUS_GET_DATA(v) ((v).data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) struct sbp2_status {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) u32 status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) u32 orb_low;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) u8 data[24];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) struct sbp2_pointer {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) __be32 high;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) __be32 low;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) struct sbp2_orb {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) struct fw_transaction t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) struct kref kref;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) dma_addr_t request_bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) int rcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) void (*callback)(struct sbp2_orb * orb, struct sbp2_status * status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) struct sbp2_logical_unit *lu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) struct list_head link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) #define MANAGEMENT_ORB_LUN(v) ((v))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) #define MANAGEMENT_ORB_FUNCTION(v) ((v) << 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) #define MANAGEMENT_ORB_RECONNECT(v) ((v) << 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) #define MANAGEMENT_ORB_EXCLUSIVE(v) ((v) ? 1 << 28 : 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) #define MANAGEMENT_ORB_REQUEST_FORMAT(v) ((v) << 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) #define MANAGEMENT_ORB_NOTIFY ((1) << 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) #define MANAGEMENT_ORB_RESPONSE_LENGTH(v) ((v))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) #define MANAGEMENT_ORB_PASSWORD_LENGTH(v) ((v) << 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) struct sbp2_management_orb {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) struct sbp2_orb base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) struct sbp2_pointer password;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) struct sbp2_pointer response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) __be32 misc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) __be32 length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) struct sbp2_pointer status_fifo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) } request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) __be32 response[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) dma_addr_t response_bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) struct completion done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) struct sbp2_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct sbp2_login_response {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) __be32 misc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct sbp2_pointer command_block_agent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) __be32 reconnect_hold;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) #define COMMAND_ORB_DATA_SIZE(v) ((v))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) #define COMMAND_ORB_PAGE_SIZE(v) ((v) << 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) #define COMMAND_ORB_PAGE_TABLE_PRESENT ((1) << 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) #define COMMAND_ORB_MAX_PAYLOAD(v) ((v) << 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) #define COMMAND_ORB_SPEED(v) ((v) << 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) #define COMMAND_ORB_DIRECTION ((1) << 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) #define COMMAND_ORB_REQUEST_FORMAT(v) ((v) << 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) #define COMMAND_ORB_NOTIFY ((1) << 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) struct sbp2_command_orb {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) struct sbp2_orb base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) struct sbp2_pointer next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) struct sbp2_pointer data_descriptor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) __be32 misc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) u8 command_block[SBP2_MAX_CDB_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) } request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) struct scsi_cmnd *cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) struct sbp2_pointer page_table[SG_ALL] __attribute__((aligned(8)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) dma_addr_t page_table_bus;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) #define SBP2_ROM_VALUE_WILDCARD ~0 /* match all */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) #define SBP2_ROM_VALUE_MISSING 0xff000000 /* not present in the unit dir. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) * List of devices with known bugs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) * The firmware_revision field, masked with 0xffff00, is the best
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) * indicator for the type of bridge chip of a device. It yields a few
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) * false positives but this did not break correctly behaving devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) * so far.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) static const struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) u32 firmware_revision;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) u32 model;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) unsigned int workarounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) } sbp2_workarounds_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) /* DViCO Momobay CX-1 with TSB42AA9 bridge */ {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) .firmware_revision = 0x002800,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) .model = 0x001010,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) .workarounds = SBP2_WORKAROUND_INQUIRY_36 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) SBP2_WORKAROUND_MODE_SENSE_8 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) SBP2_WORKAROUND_POWER_CONDITION,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) /* DViCO Momobay FX-3A with TSB42AA9A bridge */ {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) .firmware_revision = 0x002800,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) .model = 0x000000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) .workarounds = SBP2_WORKAROUND_POWER_CONDITION,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) /* Initio bridges, actually only needed for some older ones */ {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) .firmware_revision = 0x000200,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) .model = SBP2_ROM_VALUE_WILDCARD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) .workarounds = SBP2_WORKAROUND_INQUIRY_36,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) /* PL-3507 bridge with Prolific firmware */ {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) .firmware_revision = 0x012800,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) .model = SBP2_ROM_VALUE_WILDCARD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) .workarounds = SBP2_WORKAROUND_POWER_CONDITION,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) /* Symbios bridge */ {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) .firmware_revision = 0xa0b800,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) .model = SBP2_ROM_VALUE_WILDCARD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) .workarounds = SBP2_WORKAROUND_128K_MAX_TRANS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) /* Datafab MD2-FW2 with Symbios/LSILogic SYM13FW500 bridge */ {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) .firmware_revision = 0x002600,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) .model = SBP2_ROM_VALUE_WILDCARD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) .workarounds = SBP2_WORKAROUND_128K_MAX_TRANS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) * iPod 2nd generation: needs 128k max transfer size workaround
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) * iPod 3rd generation: needs fix capacity workaround
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) .firmware_revision = 0x0a2700,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) .model = 0x000000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) .workarounds = SBP2_WORKAROUND_128K_MAX_TRANS |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) SBP2_WORKAROUND_FIX_CAPACITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) /* iPod 4th generation */ {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) .firmware_revision = 0x0a2700,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) .model = 0x000021,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) .workarounds = SBP2_WORKAROUND_FIX_CAPACITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) /* iPod mini */ {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) .firmware_revision = 0x0a2700,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) .model = 0x000022,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) .workarounds = SBP2_WORKAROUND_FIX_CAPACITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) /* iPod mini */ {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) .firmware_revision = 0x0a2700,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) .model = 0x000023,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) .workarounds = SBP2_WORKAROUND_FIX_CAPACITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) /* iPod Photo */ {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) .firmware_revision = 0x0a2700,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) .model = 0x00007e,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) .workarounds = SBP2_WORKAROUND_FIX_CAPACITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) static void free_orb(struct kref *kref)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) struct sbp2_orb *orb = container_of(kref, struct sbp2_orb, kref);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) kfree(orb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) static void sbp2_status_write(struct fw_card *card, struct fw_request *request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) int tcode, int destination, int source,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) int generation, unsigned long long offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) void *payload, size_t length, void *callback_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) struct sbp2_logical_unit *lu = callback_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) struct sbp2_orb *orb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) struct sbp2_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) if (tcode != TCODE_WRITE_BLOCK_REQUEST ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) length < 8 || length > sizeof(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) fw_send_response(card, request, RCODE_TYPE_ERROR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) status.status = be32_to_cpup(payload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) status.orb_low = be32_to_cpup(payload + 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) memset(status.data, 0, sizeof(status.data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) if (length > 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) memcpy(status.data, payload + 8, length - 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) if (STATUS_GET_SOURCE(status) == 2 || STATUS_GET_SOURCE(status) == 3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) dev_notice(lu_dev(lu),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) "non-ORB related status write, not handled\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) fw_send_response(card, request, RCODE_COMPLETE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) /* Lookup the orb corresponding to this status write. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) spin_lock_irqsave(&lu->tgt->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) list_for_each_entry(orb, &lu->orb_list, link) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) if (STATUS_GET_ORB_HIGH(status) == 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) STATUS_GET_ORB_LOW(status) == orb->request_bus) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) orb->rcode = RCODE_COMPLETE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) list_del(&orb->link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) spin_unlock_irqrestore(&lu->tgt->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if (&orb->link != &lu->orb_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) orb->callback(orb, &status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) kref_put(&orb->kref, free_orb); /* orb callback reference */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) dev_err(lu_dev(lu), "status write for unknown ORB\n");
^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) fw_send_response(card, request, RCODE_COMPLETE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) static void complete_transaction(struct fw_card *card, int rcode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) void *payload, size_t length, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) struct sbp2_orb *orb = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) * This is a little tricky. We can get the status write for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) * the orb before we get this callback. The status write
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) * handler above will assume the orb pointer transaction was
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) * successful and set the rcode to RCODE_COMPLETE for the orb.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) * So this callback only sets the rcode if it hasn't already
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) * been set and only does the cleanup if the transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) * failed and we didn't already get a status write.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) spin_lock_irqsave(&orb->lu->tgt->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) if (orb->rcode == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) orb->rcode = rcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) if (orb->rcode != RCODE_COMPLETE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) list_del(&orb->link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) spin_unlock_irqrestore(&orb->lu->tgt->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) orb->callback(orb, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) kref_put(&orb->kref, free_orb); /* orb callback reference */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) spin_unlock_irqrestore(&orb->lu->tgt->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) kref_put(&orb->kref, free_orb); /* transaction callback reference */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) static void sbp2_send_orb(struct sbp2_orb *orb, struct sbp2_logical_unit *lu,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) int node_id, int generation, u64 offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) struct fw_device *device = target_parent_device(lu->tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) struct sbp2_pointer orb_pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) orb_pointer.high = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) orb_pointer.low = cpu_to_be32(orb->request_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) orb->lu = lu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) spin_lock_irqsave(&lu->tgt->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) list_add_tail(&orb->link, &lu->orb_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) spin_unlock_irqrestore(&lu->tgt->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) kref_get(&orb->kref); /* transaction callback reference */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) kref_get(&orb->kref); /* orb callback reference */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) fw_send_request(device->card, &orb->t, TCODE_WRITE_BLOCK_REQUEST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) node_id, generation, device->max_speed, offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) &orb_pointer, 8, complete_transaction, orb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) static int sbp2_cancel_orbs(struct sbp2_logical_unit *lu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) struct fw_device *device = target_parent_device(lu->tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) struct sbp2_orb *orb, *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) int retval = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) INIT_LIST_HEAD(&list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) spin_lock_irq(&lu->tgt->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) list_splice_init(&lu->orb_list, &list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) spin_unlock_irq(&lu->tgt->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) list_for_each_entry_safe(orb, next, &list, link) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) if (fw_cancel_transaction(device->card, &orb->t) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) orb->rcode = RCODE_CANCELLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) orb->callback(orb, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) kref_put(&orb->kref, free_orb); /* orb callback reference */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) static void complete_management_orb(struct sbp2_orb *base_orb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) struct sbp2_status *status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) struct sbp2_management_orb *orb =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) container_of(base_orb, struct sbp2_management_orb, base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) if (status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) memcpy(&orb->status, status, sizeof(*status));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) complete(&orb->done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) static int sbp2_send_management_orb(struct sbp2_logical_unit *lu, int node_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) int generation, int function,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) int lun_or_login_id, void *response)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) struct fw_device *device = target_parent_device(lu->tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) struct sbp2_management_orb *orb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) unsigned int timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) int retval = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) if (function == SBP2_LOGOUT_REQUEST && fw_device_is_shutdown(device))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) orb = kzalloc(sizeof(*orb), GFP_NOIO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) if (orb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) kref_init(&orb->base.kref);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) orb->response_bus =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) dma_map_single(device->card->device, &orb->response,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) sizeof(orb->response), DMA_FROM_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) if (dma_mapping_error(device->card->device, orb->response_bus))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) goto fail_mapping_response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) orb->request.response.high = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) orb->request.response.low = cpu_to_be32(orb->response_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) orb->request.misc = cpu_to_be32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) MANAGEMENT_ORB_NOTIFY |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) MANAGEMENT_ORB_FUNCTION(function) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) MANAGEMENT_ORB_LUN(lun_or_login_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) orb->request.length = cpu_to_be32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) MANAGEMENT_ORB_RESPONSE_LENGTH(sizeof(orb->response)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) orb->request.status_fifo.high =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) cpu_to_be32(lu->address_handler.offset >> 32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) orb->request.status_fifo.low =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) cpu_to_be32(lu->address_handler.offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) if (function == SBP2_LOGIN_REQUEST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) /* Ask for 2^2 == 4 seconds reconnect grace period */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) orb->request.misc |= cpu_to_be32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) MANAGEMENT_ORB_RECONNECT(2) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) MANAGEMENT_ORB_EXCLUSIVE(sbp2_param_exclusive_login));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) timeout = lu->tgt->mgt_orb_timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) timeout = SBP2_ORB_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) init_completion(&orb->done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) orb->base.callback = complete_management_orb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) orb->base.request_bus =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) dma_map_single(device->card->device, &orb->request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) sizeof(orb->request), DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) if (dma_mapping_error(device->card->device, orb->base.request_bus))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) goto fail_mapping_request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) sbp2_send_orb(&orb->base, lu, node_id, generation,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) lu->tgt->management_agent_address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) wait_for_completion_timeout(&orb->done, msecs_to_jiffies(timeout));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) retval = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) if (sbp2_cancel_orbs(lu) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) dev_err(lu_dev(lu), "ORB reply timed out, rcode 0x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) orb->base.rcode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) if (orb->base.rcode != RCODE_COMPLETE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) dev_err(lu_dev(lu), "management write failed, rcode 0x%02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) orb->base.rcode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) if (STATUS_GET_RESPONSE(orb->status) != 0 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) STATUS_GET_SBP_STATUS(orb->status) != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) dev_err(lu_dev(lu), "error status: %d:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) STATUS_GET_RESPONSE(orb->status),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) STATUS_GET_SBP_STATUS(orb->status));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) goto out;
^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) retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) dma_unmap_single(device->card->device, orb->base.request_bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) sizeof(orb->request), DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) fail_mapping_request:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) dma_unmap_single(device->card->device, orb->response_bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) sizeof(orb->response), DMA_FROM_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) fail_mapping_response:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) if (response)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) memcpy(response, orb->response, sizeof(orb->response));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) kref_put(&orb->base.kref, free_orb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) static void sbp2_agent_reset(struct sbp2_logical_unit *lu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) struct fw_device *device = target_parent_device(lu->tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) __be32 d = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) fw_run_transaction(device->card, TCODE_WRITE_QUADLET_REQUEST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) lu->tgt->node_id, lu->generation, device->max_speed,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) lu->command_block_agent_address + SBP2_AGENT_RESET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) &d, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) static void complete_agent_reset_write_no_wait(struct fw_card *card,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) int rcode, void *payload, size_t length, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) kfree(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) static void sbp2_agent_reset_no_wait(struct sbp2_logical_unit *lu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) struct fw_device *device = target_parent_device(lu->tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) struct fw_transaction *t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) static __be32 d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) t = kmalloc(sizeof(*t), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) if (t == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) fw_send_request(device->card, t, TCODE_WRITE_QUADLET_REQUEST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) lu->tgt->node_id, lu->generation, device->max_speed,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) lu->command_block_agent_address + SBP2_AGENT_RESET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) &d, 4, complete_agent_reset_write_no_wait, t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) static inline void sbp2_allow_block(struct sbp2_target *tgt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) spin_lock_irq(&tgt->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) --tgt->dont_block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) spin_unlock_irq(&tgt->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) * Blocks lu->tgt if all of the following conditions are met:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) * - Login, INQUIRY, and high-level SCSI setup of all of the target's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) * logical units have been finished (indicated by dont_block == 0).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) * - lu->generation is stale.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) * Note, scsi_block_requests() must be called while holding tgt->lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) * otherwise it might foil sbp2_[conditionally_]unblock()'s attempt to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) * unblock the target.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) static void sbp2_conditionally_block(struct sbp2_logical_unit *lu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) struct sbp2_target *tgt = lu->tgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) struct fw_card *card = target_parent_device(tgt)->card;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) struct Scsi_Host *shost =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) container_of((void *)tgt, struct Scsi_Host, hostdata[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) spin_lock_irqsave(&tgt->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) if (!tgt->dont_block && !lu->blocked &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) lu->generation != card->generation) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) lu->blocked = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) if (++tgt->blocked == 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) scsi_block_requests(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) spin_unlock_irqrestore(&tgt->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) * Unblocks lu->tgt as soon as all its logical units can be unblocked.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) * Note, it is harmless to run scsi_unblock_requests() outside the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) * tgt->lock protected section. On the other hand, running it inside
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) * the section might clash with shost->host_lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) static void sbp2_conditionally_unblock(struct sbp2_logical_unit *lu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) struct sbp2_target *tgt = lu->tgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) struct fw_card *card = target_parent_device(tgt)->card;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) struct Scsi_Host *shost =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) container_of((void *)tgt, struct Scsi_Host, hostdata[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) bool unblock = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) spin_lock_irq(&tgt->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) if (lu->blocked && lu->generation == card->generation) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) lu->blocked = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) unblock = --tgt->blocked == 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) spin_unlock_irq(&tgt->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) if (unblock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) scsi_unblock_requests(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) * Prevents future blocking of tgt and unblocks it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) * Note, it is harmless to run scsi_unblock_requests() outside the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) * tgt->lock protected section. On the other hand, running it inside
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) * the section might clash with shost->host_lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) static void sbp2_unblock(struct sbp2_target *tgt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) struct Scsi_Host *shost =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) container_of((void *)tgt, struct Scsi_Host, hostdata[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) spin_lock_irq(&tgt->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) ++tgt->dont_block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) spin_unlock_irq(&tgt->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) scsi_unblock_requests(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) static int sbp2_lun2int(u16 lun)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) struct scsi_lun eight_bytes_lun;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) memset(&eight_bytes_lun, 0, sizeof(eight_bytes_lun));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) eight_bytes_lun.scsi_lun[0] = (lun >> 8) & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) eight_bytes_lun.scsi_lun[1] = lun & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) return scsilun_to_int(&eight_bytes_lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) * Write retransmit retry values into the BUSY_TIMEOUT register.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) * - The single-phase retry protocol is supported by all SBP-2 devices, but the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) * default retry_limit value is 0 (i.e. never retry transmission). We write a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) * saner value after logging into the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) * - The dual-phase retry protocol is optional to implement, and if not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) * supported, writes to the dual-phase portion of the register will be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) * ignored. We try to write the original 1394-1995 default here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) * - In the case of devices that are also SBP-3-compliant, all writes are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) * ignored, as the register is read-only, but contains single-phase retry of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) * 15, which is what we're trying to set for all SBP-2 device anyway, so this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) * write attempt is safe and yields more consistent behavior for all devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) * See section 8.3.2.3.5 of the 1394-1995 spec, section 6.2 of the SBP-2 spec,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) * and section 6.4 of the SBP-3 spec for further details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) static void sbp2_set_busy_timeout(struct sbp2_logical_unit *lu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) struct fw_device *device = target_parent_device(lu->tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) __be32 d = cpu_to_be32(SBP2_CYCLE_LIMIT | SBP2_RETRY_LIMIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) fw_run_transaction(device->card, TCODE_WRITE_QUADLET_REQUEST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) lu->tgt->node_id, lu->generation, device->max_speed,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) CSR_REGISTER_BASE + CSR_BUSY_TIMEOUT, &d, 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) static void sbp2_reconnect(struct work_struct *work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) static void sbp2_login(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) struct sbp2_logical_unit *lu =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) container_of(work, struct sbp2_logical_unit, work.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) struct sbp2_target *tgt = lu->tgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) struct fw_device *device = target_parent_device(tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) struct Scsi_Host *shost;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) struct scsi_device *sdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) struct sbp2_login_response response;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) int generation, node_id, local_node_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) if (fw_device_is_shutdown(device))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) generation = device->generation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) smp_rmb(); /* node IDs must not be older than generation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) node_id = device->node_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) local_node_id = device->card->node_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) /* If this is a re-login attempt, log out, or we might be rejected. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) if (lu->has_sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) sbp2_send_management_orb(lu, device->node_id, generation,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) SBP2_LOGOUT_REQUEST, lu->login_id, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) if (sbp2_send_management_orb(lu, node_id, generation,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) SBP2_LOGIN_REQUEST, lu->lun, &response) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) if (lu->retries++ < 5) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) sbp2_queue_work(lu, DIV_ROUND_UP(HZ, 5));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) dev_err(tgt_dev(tgt), "failed to login to LUN %04x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) lu->lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) /* Let any waiting I/O fail from now on. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) sbp2_unblock(lu->tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) tgt->node_id = node_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) tgt->address_high = local_node_id << 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) smp_wmb(); /* node IDs must not be older than generation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) lu->generation = generation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) lu->command_block_agent_address =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) ((u64)(be32_to_cpu(response.command_block_agent.high) & 0xffff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) << 32) | be32_to_cpu(response.command_block_agent.low);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) lu->login_id = be32_to_cpu(response.misc) & 0xffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) dev_notice(tgt_dev(tgt), "logged in to LUN %04x (%d retries)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) lu->lun, lu->retries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) /* set appropriate retry limit(s) in BUSY_TIMEOUT register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) sbp2_set_busy_timeout(lu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) lu->workfn = sbp2_reconnect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) sbp2_agent_reset(lu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) /* This was a re-login. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) if (lu->has_sdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) sbp2_cancel_orbs(lu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) sbp2_conditionally_unblock(lu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) if (lu->tgt->workarounds & SBP2_WORKAROUND_DELAY_INQUIRY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) ssleep(SBP2_INQUIRY_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) shost = container_of((void *)tgt, struct Scsi_Host, hostdata[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) sdev = __scsi_add_device(shost, 0, 0, sbp2_lun2int(lu->lun), lu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) * FIXME: We are unable to perform reconnects while in sbp2_login().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) * Therefore __scsi_add_device() will get into trouble if a bus reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) * happens in parallel. It will either fail or leave us with an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) * unusable sdev. As a workaround we check for this and retry the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) * whole login and SCSI probing.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) /* Reported error during __scsi_add_device() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) if (IS_ERR(sdev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) goto out_logout_login;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) /* Unreported error during __scsi_add_device() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) smp_rmb(); /* get current card generation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) if (generation != device->card->generation) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) scsi_remove_device(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) scsi_device_put(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) goto out_logout_login;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) /* No error during __scsi_add_device() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) lu->has_sdev = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) scsi_device_put(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) sbp2_allow_block(tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) out_logout_login:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) smp_rmb(); /* generation may have changed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) generation = device->generation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) smp_rmb(); /* node_id must not be older than generation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) sbp2_send_management_orb(lu, device->node_id, generation,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) SBP2_LOGOUT_REQUEST, lu->login_id, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) * If a bus reset happened, sbp2_update will have requeued
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) * lu->work already. Reset the work from reconnect to login.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) lu->workfn = sbp2_login;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) static void sbp2_reconnect(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) struct sbp2_logical_unit *lu =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) container_of(work, struct sbp2_logical_unit, work.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) struct sbp2_target *tgt = lu->tgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) struct fw_device *device = target_parent_device(tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) int generation, node_id, local_node_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) if (fw_device_is_shutdown(device))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) generation = device->generation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) smp_rmb(); /* node IDs must not be older than generation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) node_id = device->node_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) local_node_id = device->card->node_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) if (sbp2_send_management_orb(lu, node_id, generation,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) SBP2_RECONNECT_REQUEST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) lu->login_id, NULL) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) * If reconnect was impossible even though we are in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) * current generation, fall back and try to log in again.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) * We could check for "Function rejected" status, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) * looking at the bus generation as simpler and more general.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) smp_rmb(); /* get current card generation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) if (generation == device->card->generation ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) lu->retries++ >= 5) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) dev_err(tgt_dev(tgt), "failed to reconnect\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) lu->retries = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) lu->workfn = sbp2_login;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) sbp2_queue_work(lu, DIV_ROUND_UP(HZ, 5));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) tgt->node_id = node_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) tgt->address_high = local_node_id << 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) smp_wmb(); /* node IDs must not be older than generation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) lu->generation = generation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) dev_notice(tgt_dev(tgt), "reconnected to LUN %04x (%d retries)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) lu->lun, lu->retries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) sbp2_agent_reset(lu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) sbp2_cancel_orbs(lu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) sbp2_conditionally_unblock(lu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) static void sbp2_lu_workfn(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) struct sbp2_logical_unit *lu = container_of(to_delayed_work(work),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) struct sbp2_logical_unit, work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) lu->workfn(work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) static int sbp2_add_logical_unit(struct sbp2_target *tgt, int lun_entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) struct sbp2_logical_unit *lu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) lu = kmalloc(sizeof(*lu), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) if (!lu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) lu->address_handler.length = 0x100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) lu->address_handler.address_callback = sbp2_status_write;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) lu->address_handler.callback_data = lu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) if (fw_core_add_address_handler(&lu->address_handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) &fw_high_memory_region) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) kfree(lu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) lu->tgt = tgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) lu->lun = lun_entry & 0xffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) lu->login_id = INVALID_LOGIN_ID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) lu->retries = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) lu->has_sdev = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) lu->blocked = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) ++tgt->dont_block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) INIT_LIST_HEAD(&lu->orb_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) lu->workfn = sbp2_login;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) INIT_DELAYED_WORK(&lu->work, sbp2_lu_workfn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) list_add_tail(&lu->link, &tgt->lu_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) static void sbp2_get_unit_unique_id(struct sbp2_target *tgt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) const u32 *leaf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) if ((leaf[0] & 0xffff0000) == 0x00020000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) tgt->guid = (u64)leaf[1] << 32 | leaf[2];
^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) static int sbp2_scan_logical_unit_dir(struct sbp2_target *tgt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) const u32 *directory)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) struct fw_csr_iterator ci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) int key, value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) fw_csr_iterator_init(&ci, directory);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) while (fw_csr_iterator_next(&ci, &key, &value))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) if (key == SBP2_CSR_LOGICAL_UNIT_NUMBER &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) sbp2_add_logical_unit(tgt, value) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) static int sbp2_scan_unit_dir(struct sbp2_target *tgt, const u32 *directory,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) u32 *model, u32 *firmware_revision)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) struct fw_csr_iterator ci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) int key, value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) fw_csr_iterator_init(&ci, directory);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) while (fw_csr_iterator_next(&ci, &key, &value)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) switch (key) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) case CSR_DEPENDENT_INFO | CSR_OFFSET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) tgt->management_agent_address =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) CSR_REGISTER_BASE + 4 * value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) case CSR_DIRECTORY_ID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) tgt->directory_id = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) case CSR_MODEL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) *model = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) case SBP2_CSR_FIRMWARE_REVISION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) *firmware_revision = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) case SBP2_CSR_UNIT_CHARACTERISTICS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) /* the timeout value is stored in 500ms units */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) tgt->mgt_orb_timeout = (value >> 8 & 0xff) * 500;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) case SBP2_CSR_LOGICAL_UNIT_NUMBER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) if (sbp2_add_logical_unit(tgt, value) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) case SBP2_CSR_UNIT_UNIQUE_ID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) sbp2_get_unit_unique_id(tgt, ci.p - 1 + value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) case SBP2_CSR_LOGICAL_UNIT_DIRECTORY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) /* Adjust for the increment in the iterator */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) if (sbp2_scan_logical_unit_dir(tgt, ci.p - 1 + value) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) * Per section 7.4.8 of the SBP-2 spec, a mgt_ORB_timeout value can be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) * provided in the config rom. Most devices do provide a value, which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) * we'll use for login management orbs, but with some sane limits.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) static void sbp2_clamp_management_orb_timeout(struct sbp2_target *tgt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) unsigned int timeout = tgt->mgt_orb_timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) if (timeout > 40000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) dev_notice(tgt_dev(tgt), "%ds mgt_ORB_timeout limited to 40s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) timeout / 1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) tgt->mgt_orb_timeout = clamp_val(timeout, 5000, 40000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) static void sbp2_init_workarounds(struct sbp2_target *tgt, u32 model,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) u32 firmware_revision)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) unsigned int w = sbp2_param_workarounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) if (w)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) dev_notice(tgt_dev(tgt),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) "Please notify linux1394-devel@lists.sf.net "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) "if you need the workarounds parameter\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) if (w & SBP2_WORKAROUND_OVERRIDE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) for (i = 0; i < ARRAY_SIZE(sbp2_workarounds_table); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) if (sbp2_workarounds_table[i].firmware_revision !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) (firmware_revision & 0xffffff00))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) if (sbp2_workarounds_table[i].model != model &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) sbp2_workarounds_table[i].model != SBP2_ROM_VALUE_WILDCARD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) w |= sbp2_workarounds_table[i].workarounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) if (w)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) dev_notice(tgt_dev(tgt), "workarounds 0x%x "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) "(firmware_revision 0x%06x, model_id 0x%06x)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) w, firmware_revision, model);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) tgt->workarounds = w;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) static struct scsi_host_template scsi_driver_template;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) static void sbp2_remove(struct fw_unit *unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) static int sbp2_probe(struct fw_unit *unit, const struct ieee1394_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) struct fw_device *device = fw_parent_device(unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) struct sbp2_target *tgt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) struct sbp2_logical_unit *lu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) struct Scsi_Host *shost;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) u32 model, firmware_revision;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) /* cannot (or should not) handle targets on the local node */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) if (device->is_local)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) shost = scsi_host_alloc(&scsi_driver_template, sizeof(*tgt));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) if (shost == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) tgt = (struct sbp2_target *)shost->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) dev_set_drvdata(&unit->device, tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) tgt->unit = unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) INIT_LIST_HEAD(&tgt->lu_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) spin_lock_init(&tgt->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) tgt->guid = (u64)device->config_rom[3] << 32 | device->config_rom[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) if (fw_device_enable_phys_dma(device) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) goto fail_shost_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) shost->max_cmd_len = SBP2_MAX_CDB_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) if (scsi_add_host_with_dma(shost, &unit->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) device->card->device) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) goto fail_shost_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) /* implicit directory ID */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) tgt->directory_id = ((unit->directory - device->config_rom) * 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) + CSR_CONFIG_ROM) & 0xffffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) firmware_revision = SBP2_ROM_VALUE_MISSING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) model = SBP2_ROM_VALUE_MISSING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) if (sbp2_scan_unit_dir(tgt, unit->directory, &model,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) &firmware_revision) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) goto fail_remove;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) sbp2_clamp_management_orb_timeout(tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) sbp2_init_workarounds(tgt, model, firmware_revision);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) * At S100 we can do 512 bytes per packet, at S200 1024 bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) * and so on up to 4096 bytes. The SBP-2 max_payload field
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) * specifies the max payload size as 2 ^ (max_payload + 2), so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) * if we set this to max_speed + 7, we get the right value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) tgt->max_payload = min3(device->max_speed + 7, 10U,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) device->card->max_receive - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) /* Do the login in a workqueue so we can easily reschedule retries. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) list_for_each_entry(lu, &tgt->lu_list, link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) sbp2_queue_work(lu, DIV_ROUND_UP(HZ, 5));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) fail_remove:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) sbp2_remove(unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) fail_shost_put:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) scsi_host_put(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) static void sbp2_update(struct fw_unit *unit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) struct sbp2_target *tgt = dev_get_drvdata(&unit->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) struct sbp2_logical_unit *lu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) fw_device_enable_phys_dma(fw_parent_device(unit));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) * Fw-core serializes sbp2_update() against sbp2_remove().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) * Iteration over tgt->lu_list is therefore safe here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) list_for_each_entry(lu, &tgt->lu_list, link) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) sbp2_conditionally_block(lu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) lu->retries = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) sbp2_queue_work(lu, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) static void sbp2_remove(struct fw_unit *unit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) struct fw_device *device = fw_parent_device(unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) struct sbp2_target *tgt = dev_get_drvdata(&unit->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) struct sbp2_logical_unit *lu, *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) struct Scsi_Host *shost =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) container_of((void *)tgt, struct Scsi_Host, hostdata[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) struct scsi_device *sdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) /* prevent deadlocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) sbp2_unblock(tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) list_for_each_entry_safe(lu, next, &tgt->lu_list, link) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) cancel_delayed_work_sync(&lu->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) sdev = scsi_device_lookup(shost, 0, 0, sbp2_lun2int(lu->lun));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) if (sdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) scsi_remove_device(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) scsi_device_put(sdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) if (lu->login_id != INVALID_LOGIN_ID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) int generation, node_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) * tgt->node_id may be obsolete here if we failed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) * during initial login or after a bus reset where
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) * the topology changed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) generation = device->generation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) smp_rmb(); /* node_id vs. generation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) node_id = device->node_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) sbp2_send_management_orb(lu, node_id, generation,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) SBP2_LOGOUT_REQUEST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) lu->login_id, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) fw_core_remove_address_handler(&lu->address_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) list_del(&lu->link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) kfree(lu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) scsi_remove_host(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) dev_notice(&unit->device, "released target %d:0:0\n", shost->host_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) scsi_host_put(shost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) #define SBP2_UNIT_SPEC_ID_ENTRY 0x0000609e
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) #define SBP2_SW_VERSION_ENTRY 0x00010483
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) static const struct ieee1394_device_id sbp2_id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) .match_flags = IEEE1394_MATCH_SPECIFIER_ID |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) IEEE1394_MATCH_VERSION,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) .specifier_id = SBP2_UNIT_SPEC_ID_ENTRY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) .version = SBP2_SW_VERSION_ENTRY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) static struct fw_driver sbp2_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) .name = KBUILD_MODNAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) .bus = &fw_bus_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) .probe = sbp2_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) .update = sbp2_update,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) .remove = sbp2_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) .id_table = sbp2_id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) static void sbp2_unmap_scatterlist(struct device *card_device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) struct sbp2_command_orb *orb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) scsi_dma_unmap(orb->cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) if (orb->request.misc & cpu_to_be32(COMMAND_ORB_PAGE_TABLE_PRESENT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) dma_unmap_single(card_device, orb->page_table_bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) sizeof(orb->page_table), DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) static unsigned int sbp2_status_to_sense_data(u8 *sbp2_status, u8 *sense_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) int sam_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) int sfmt = (sbp2_status[0] >> 6) & 0x03;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) if (sfmt == 2 || sfmt == 3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) * Reserved for future standardization (2) or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) * Status block format vendor-dependent (3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) return DID_ERROR << 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) sense_data[0] = 0x70 | sfmt | (sbp2_status[1] & 0x80);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) sense_data[1] = 0x0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) sense_data[2] = ((sbp2_status[1] << 1) & 0xe0) | (sbp2_status[1] & 0x0f);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) sense_data[3] = sbp2_status[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) sense_data[4] = sbp2_status[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) sense_data[5] = sbp2_status[6];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) sense_data[6] = sbp2_status[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) sense_data[7] = 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) sense_data[8] = sbp2_status[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) sense_data[9] = sbp2_status[9];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) sense_data[10] = sbp2_status[10];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) sense_data[11] = sbp2_status[11];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) sense_data[12] = sbp2_status[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) sense_data[13] = sbp2_status[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) sense_data[14] = sbp2_status[12];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) sense_data[15] = sbp2_status[13];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) sam_status = sbp2_status[0] & 0x3f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) switch (sam_status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) case SAM_STAT_GOOD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) case SAM_STAT_CHECK_CONDITION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) case SAM_STAT_CONDITION_MET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) case SAM_STAT_BUSY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) case SAM_STAT_RESERVATION_CONFLICT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) case SAM_STAT_COMMAND_TERMINATED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) return DID_OK << 16 | sam_status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) return DID_ERROR << 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) static void complete_command_orb(struct sbp2_orb *base_orb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) struct sbp2_status *status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) struct sbp2_command_orb *orb =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) container_of(base_orb, struct sbp2_command_orb, base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) struct fw_device *device = target_parent_device(base_orb->lu->tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) if (status != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) if (STATUS_GET_DEAD(*status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) sbp2_agent_reset_no_wait(base_orb->lu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) switch (STATUS_GET_RESPONSE(*status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) case SBP2_STATUS_REQUEST_COMPLETE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) result = DID_OK << 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) case SBP2_STATUS_TRANSPORT_FAILURE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) result = DID_BUS_BUSY << 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) case SBP2_STATUS_ILLEGAL_REQUEST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) case SBP2_STATUS_VENDOR_DEPENDENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) result = DID_ERROR << 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) if (result == DID_OK << 16 && STATUS_GET_LEN(*status) > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) result = sbp2_status_to_sense_data(STATUS_GET_DATA(*status),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) orb->cmd->sense_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) * If the orb completes with status == NULL, something
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) * went wrong, typically a bus reset happened mid-orb
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) * or when sending the write (less likely).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) result = DID_BUS_BUSY << 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) sbp2_conditionally_block(base_orb->lu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) dma_unmap_single(device->card->device, orb->base.request_bus,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) sizeof(orb->request), DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) sbp2_unmap_scatterlist(device->card->device, orb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) orb->cmd->result = result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) orb->cmd->scsi_done(orb->cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) static int sbp2_map_scatterlist(struct sbp2_command_orb *orb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) struct fw_device *device, struct sbp2_logical_unit *lu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) struct scatterlist *sg = scsi_sglist(orb->cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) int i, n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) n = scsi_dma_map(orb->cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) if (n <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) * Handle the special case where there is only one element in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) * the scatter list by converting it to an immediate block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) * request. This is also a workaround for broken devices such
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) * as the second generation iPod which doesn't support page
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) * tables.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) if (n == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) orb->request.data_descriptor.high =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) cpu_to_be32(lu->tgt->address_high);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) orb->request.data_descriptor.low =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) cpu_to_be32(sg_dma_address(sg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) orb->request.misc |=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) cpu_to_be32(COMMAND_ORB_DATA_SIZE(sg_dma_len(sg)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) for_each_sg(sg, sg, n, i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) orb->page_table[i].high = cpu_to_be32(sg_dma_len(sg) << 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) orb->page_table[i].low = cpu_to_be32(sg_dma_address(sg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) orb->page_table_bus =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) dma_map_single(device->card->device, orb->page_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) sizeof(orb->page_table), DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) if (dma_mapping_error(device->card->device, orb->page_table_bus))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) goto fail_page_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) * The data_descriptor pointer is the one case where we need
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) * to fill in the node ID part of the address. All other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) * pointers assume that the data referenced reside on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) * initiator (i.e. us), but data_descriptor can refer to data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) * on other nodes so we need to put our ID in descriptor.high.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) orb->request.data_descriptor.high = cpu_to_be32(lu->tgt->address_high);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) orb->request.data_descriptor.low = cpu_to_be32(orb->page_table_bus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) orb->request.misc |= cpu_to_be32(COMMAND_ORB_PAGE_TABLE_PRESENT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) COMMAND_ORB_DATA_SIZE(n));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) fail_page_table:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) scsi_dma_unmap(orb->cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) /* SCSI stack integration */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) static int sbp2_scsi_queuecommand(struct Scsi_Host *shost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) struct scsi_cmnd *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) struct sbp2_logical_unit *lu = cmd->device->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) struct fw_device *device = target_parent_device(lu->tgt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) struct sbp2_command_orb *orb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) int generation, retval = SCSI_MLQUEUE_HOST_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) orb = kzalloc(sizeof(*orb), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) if (orb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) return SCSI_MLQUEUE_HOST_BUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) /* Initialize rcode to something not RCODE_COMPLETE. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) orb->base.rcode = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) kref_init(&orb->base.kref);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) orb->cmd = cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) orb->request.next.high = cpu_to_be32(SBP2_ORB_NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) orb->request.misc = cpu_to_be32(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) COMMAND_ORB_MAX_PAYLOAD(lu->tgt->max_payload) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) COMMAND_ORB_SPEED(device->max_speed) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) COMMAND_ORB_NOTIFY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) if (cmd->sc_data_direction == DMA_FROM_DEVICE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) orb->request.misc |= cpu_to_be32(COMMAND_ORB_DIRECTION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) generation = device->generation;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) smp_rmb(); /* sbp2_map_scatterlist looks at tgt->address_high */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) if (scsi_sg_count(cmd) && sbp2_map_scatterlist(orb, device, lu) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) memcpy(orb->request.command_block, cmd->cmnd, cmd->cmd_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) orb->base.callback = complete_command_orb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) orb->base.request_bus =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) dma_map_single(device->card->device, &orb->request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) sizeof(orb->request), DMA_TO_DEVICE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) if (dma_mapping_error(device->card->device, orb->base.request_bus)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) sbp2_unmap_scatterlist(device->card->device, orb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) sbp2_send_orb(&orb->base, lu, lu->tgt->node_id, generation,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) lu->command_block_agent_address + SBP2_ORB_POINTER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) kref_put(&orb->base.kref, free_orb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) static int sbp2_scsi_slave_alloc(struct scsi_device *sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) struct sbp2_logical_unit *lu = sdev->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) /* (Re-)Adding logical units via the SCSI stack is not supported. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) if (!lu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) return -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) sdev->allow_restart = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) * SBP-2 does not require any alignment, but we set it anyway
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) * for compatibility with earlier versions of this driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) blk_queue_update_dma_alignment(sdev->request_queue, 4 - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) if (lu->tgt->workarounds & SBP2_WORKAROUND_INQUIRY_36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) sdev->inquiry_len = 36;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) static int sbp2_scsi_slave_configure(struct scsi_device *sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) struct sbp2_logical_unit *lu = sdev->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) sdev->use_10_for_rw = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) if (sbp2_param_exclusive_login)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) sdev->manage_start_stop = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) if (sdev->type == TYPE_ROM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) sdev->use_10_for_ms = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) if (sdev->type == TYPE_DISK &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) lu->tgt->workarounds & SBP2_WORKAROUND_MODE_SENSE_8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) sdev->skip_ms_page_8 = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) if (lu->tgt->workarounds & SBP2_WORKAROUND_FIX_CAPACITY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) sdev->fix_capacity = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) if (lu->tgt->workarounds & SBP2_WORKAROUND_POWER_CONDITION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) sdev->start_stop_pwr_cond = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) if (lu->tgt->workarounds & SBP2_WORKAROUND_128K_MAX_TRANS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) blk_queue_max_hw_sectors(sdev->request_queue, 128 * 1024 / 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) * Called by scsi stack when something has really gone wrong. Usually
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) * called when a command has timed-out for some reason.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) static int sbp2_scsi_abort(struct scsi_cmnd *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) struct sbp2_logical_unit *lu = cmd->device->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) dev_notice(lu_dev(lu), "sbp2_scsi_abort\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) sbp2_agent_reset(lu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) sbp2_cancel_orbs(lu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) return SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) * Format of /sys/bus/scsi/devices/.../ieee1394_id:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) * u64 EUI-64 : u24 directory_ID : u16 LUN (all printed in hexadecimal)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) * This is the concatenation of target port identifier and logical unit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) * identifier as per SAM-2...SAM-4 annex A.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) static ssize_t sbp2_sysfs_ieee1394_id_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) struct scsi_device *sdev = to_scsi_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) struct sbp2_logical_unit *lu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) if (!sdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) lu = sdev->hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) return sprintf(buf, "%016llx:%06x:%04x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) (unsigned long long)lu->tgt->guid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) lu->tgt->directory_id, lu->lun);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) static DEVICE_ATTR(ieee1394_id, S_IRUGO, sbp2_sysfs_ieee1394_id_show, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) static struct device_attribute *sbp2_scsi_sysfs_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) &dev_attr_ieee1394_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) static struct scsi_host_template scsi_driver_template = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) .module = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) .name = "SBP-2 IEEE-1394",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) .proc_name = "sbp2",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) .queuecommand = sbp2_scsi_queuecommand,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) .slave_alloc = sbp2_scsi_slave_alloc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) .slave_configure = sbp2_scsi_slave_configure,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) .eh_abort_handler = sbp2_scsi_abort,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) .this_id = -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) .sg_tablesize = SG_ALL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) .max_segment_size = SBP2_MAX_SEG_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) .can_queue = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) .sdev_attrs = sbp2_scsi_sysfs_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) MODULE_AUTHOR("Kristian Hoegsberg <krh@bitplanet.net>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) MODULE_DESCRIPTION("SCSI over IEEE1394");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) MODULE_DEVICE_TABLE(ieee1394, sbp2_id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) /* Provide a module alias so root-on-sbp2 initrds don't break. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) MODULE_ALIAS("sbp2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) static int __init sbp2_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) return driver_register(&sbp2_driver.driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) static void __exit sbp2_cleanup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) driver_unregister(&sbp2_driver.driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) module_init(sbp2_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) module_exit(sbp2_cleanup);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags