^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2003 Red Hat
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^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) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/timer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/major.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/genhd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/blkpg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/pci.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/ide.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/nmi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <asm/byteorder.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <asm/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) void SELECT_MASK(ide_drive_t *drive, int mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) const struct ide_port_ops *port_ops = drive->hwif->port_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) if (port_ops && port_ops->maskproc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) port_ops->maskproc(drive, mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) u8 ide_read_error(ide_drive_t *drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct ide_taskfile tf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) drive->hwif->tp_ops->tf_read(drive, &tf, IDE_VALID_ERROR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) return tf.error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) EXPORT_SYMBOL_GPL(ide_read_error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) void ide_fix_driveid(u16 *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #ifndef __LITTLE_ENDIAN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) # ifdef __BIG_ENDIAN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) for (i = 0; i < 256; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) id[i] = __le16_to_cpu(id[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) # else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) # error "Please fix <asm/byteorder.h>"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) # endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * ide_fixstring() cleans up and (optionally) byte-swaps a text string,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * removing leading/trailing blanks and compressing internal blanks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * It is primarily used to tidy up the model name/number fields as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * returned by the ATA_CMD_ID_ATA[PI] commands.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) void ide_fixstring(u8 *s, const int bytecount, const int byteswap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) u8 *p, *end = &s[bytecount & ~1]; /* bytecount must be even */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (byteswap) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) /* convert from big-endian to host byte order */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) for (p = s ; p != end ; p += 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) be16_to_cpus((u16 *) p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /* strip leading blanks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) p = s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) while (s != end && *s == ' ')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) ++s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /* compress internal blanks and strip trailing blanks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) while (s != end && *s) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (*s++ != ' ' || (s != end && *s && *s != ' '))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) *p++ = *(s-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) /* wipe out trailing garbage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) while (p != end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) *p++ = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) EXPORT_SYMBOL(ide_fixstring);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * This routine busy-waits for the drive status to be not "busy".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * It then checks the status for all of the "good" bits and none
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * of the "bad" bits, and if all is okay it returns 0. All other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * cases return error -- caller may then invoke ide_error().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * This routine should get fixed to not hog the cpu during extra long waits..
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * That could be done by busy-waiting for the first jiffy or two, and then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * setting a timer to wake up at half second intervals thereafter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * until timeout is achieved, before timing out.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) unsigned long timeout, u8 *rstat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) ide_hwif_t *hwif = drive->hwif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) const struct ide_tp_ops *tp_ops = hwif->tp_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) bool irqs_threaded = force_irqthreads;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) u8 stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) udelay(1); /* spec allows drive 400ns to assert "BUSY" */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) stat = tp_ops->read_status(hwif);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) if (stat & ATA_BUSY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) if (!irqs_threaded) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) local_save_flags(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) local_irq_enable_in_hardirq();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) timeout += jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) while ((stat = tp_ops->read_status(hwif)) & ATA_BUSY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (time_after(jiffies, timeout)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * One last read after the timeout in case
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * heavy interrupt load made us not make any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * progress during the timeout..
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) stat = tp_ops->read_status(hwif);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if ((stat & ATA_BUSY) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) if (!irqs_threaded)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) *rstat = stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return -EBUSY;
^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) if (!irqs_threaded)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * Allow status to settle, then read it again.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * A few rare drives vastly violate the 400ns spec here,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * so we'll wait up to 10usec for a "good" status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * rather than expensively fail things immediately.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * This fix courtesy of Matthew Faupel & Niccolo Rigacci.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) for (i = 0; i < 10; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) udelay(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) stat = tp_ops->read_status(hwif);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) if (OK_STAT(stat, good, bad)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) *rstat = stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) *rstat = stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * In case of error returns error value after doing "*startstop = ide_error()".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * The caller should return the updated value of "startstop" in this case,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * "startstop" is unchanged when the function returns 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) int ide_wait_stat(ide_startstop_t *startstop, ide_drive_t *drive, u8 good,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) u8 bad, unsigned long timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) u8 stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) /* bail early if we've exceeded max_failures */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (drive->max_failures && (drive->failures > drive->max_failures)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) *startstop = ide_stopped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) err = __ide_wait_stat(drive, good, bad, timeout, &stat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) char *s = (err == -EBUSY) ? "status timeout" : "status error";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) *startstop = ide_error(drive, s, stat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) EXPORT_SYMBOL(ide_wait_stat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * ide_in_drive_list - look for drive in black/white list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * @id: drive identifier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * @table: list to inspect
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) * Look for a drive in the blacklist and the whitelist tables
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) * Returns 1 if the drive is found in the table.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) int ide_in_drive_list(u16 *id, const struct drive_list_entry *table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) for ( ; table->id_model; table++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) if ((!strcmp(table->id_model, (char *)&id[ATA_ID_PROD])) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) (!table->id_firmware ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) strstr((char *)&id[ATA_ID_FW_REV], table->id_firmware)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) EXPORT_SYMBOL_GPL(ide_in_drive_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) * Early UDMA66 devices don't set bit14 to 1, only bit13 is valid.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) * Some optical devices with the buggy firmwares have the same problem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) static const struct drive_list_entry ivb_list[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) { "QUANTUM FIREBALLlct10 05" , "A03.0900" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) { "QUANTUM FIREBALLlct20 30" , "APL.0900" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) { "TSSTcorp CDDVDW SH-S202J" , "SB00" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) { "TSSTcorp CDDVDW SH-S202J" , "SB01" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) { "TSSTcorp CDDVDW SH-S202N" , "SB00" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) { "TSSTcorp CDDVDW SH-S202N" , "SB01" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) { "TSSTcorp CDDVDW SH-S202H" , "SB00" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) { "TSSTcorp CDDVDW SH-S202H" , "SB01" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) { "SAMSUNG SP0822N" , "WA100-10" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) { NULL , NULL }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) * All hosts that use the 80c ribbon must use!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * The name is derived from upper byte of word 93 and the 80c ribbon.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) u8 eighty_ninty_three(ide_drive_t *drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) ide_hwif_t *hwif = drive->hwif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) u16 *id = drive->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) int ivb = ide_in_drive_list(id, ivb_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) if (hwif->cbl == ATA_CBL_SATA || hwif->cbl == ATA_CBL_PATA40_SHORT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (ivb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) printk(KERN_DEBUG "%s: skipping word 93 validity check\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) drive->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) if (ata_id_is_sata(id) && !ivb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) if (hwif->cbl != ATA_CBL_PATA80 && !ivb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) goto no_80w;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) * FIXME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) * - change master/slave IDENTIFY order
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) * - force bit13 (80c cable present) check also for !ivb devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) * (unless the slave device is pre-ATA3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) if (id[ATA_ID_HW_CONFIG] & 0x4000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) if (ivb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) const char *model = (char *)&id[ATA_ID_PROD];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if (strstr(model, "TSSTcorp CDDVDW SH-S202")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) * These ATAPI devices always report 80c cable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) * so we have to depend on the host in this case.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (hwif->cbl == ATA_CBL_PATA80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) /* Depend on the device side cable detection. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) if (id[ATA_ID_HW_CONFIG] & 0x2000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) no_80w:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (drive->dev_flags & IDE_DFLAG_UDMA33_WARNED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) printk(KERN_WARNING "%s: %s side 80-wire cable detection failed, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) "limiting max speed to UDMA33\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) drive->name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) hwif->cbl == ATA_CBL_PATA80 ? "drive" : "host");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) drive->dev_flags |= IDE_DFLAG_UDMA33_WARNED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) static const char *nien_quirk_list[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) "QUANTUM FIREBALLlct08 08",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) "QUANTUM FIREBALLP KA6.4",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) "QUANTUM FIREBALLP KA9.1",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) "QUANTUM FIREBALLP KX13.6",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) "QUANTUM FIREBALLP KX20.5",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) "QUANTUM FIREBALLP KX27.3",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) "QUANTUM FIREBALLP LM20.4",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) "QUANTUM FIREBALLP LM20.5",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) "FUJITSU MHZ2160BH G2",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) void ide_check_nien_quirk_list(ide_drive_t *drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) const char **list, *m = (char *)&drive->id[ATA_ID_PROD];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) for (list = nien_quirk_list; *list != NULL; list++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) if (strstr(m, *list) != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) drive->dev_flags |= IDE_DFLAG_NIEN_QUIRK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) int ide_driveid_update(ide_drive_t *drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) u16 *id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) id = kmalloc(SECTOR_SIZE, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if (id == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) SELECT_MASK(drive, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) rc = ide_dev_read_id(drive, ATA_CMD_ID_ATA, id, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) SELECT_MASK(drive, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) drive->id[ATA_ID_UDMA_MODES] = id[ATA_ID_UDMA_MODES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) drive->id[ATA_ID_MWDMA_MODES] = id[ATA_ID_MWDMA_MODES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) drive->id[ATA_ID_SWDMA_MODES] = id[ATA_ID_SWDMA_MODES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) drive->id[ATA_ID_CFA_MODES] = id[ATA_ID_CFA_MODES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) /* anything more ? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) kfree(id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) out_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) if (rc == 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) printk(KERN_ERR "%s: %s: bad status\n", drive->name, __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) kfree(id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) ide_hwif_t *hwif = drive->hwif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) const struct ide_tp_ops *tp_ops = hwif->tp_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) struct ide_taskfile tf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) u16 *id = drive->id, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) int error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) u8 stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) #ifdef CONFIG_BLK_DEV_IDEDMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) if (hwif->dma_ops) /* check if host supports DMA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) hwif->dma_ops->dma_host_set(drive, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) /* Skip setting PIO flow-control modes on pre-EIDE drives */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) if ((speed & 0xf8) == XFER_PIO_0 && ata_id_has_iordy(drive->id) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) goto skip;
^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) * Don't use ide_wait_cmd here - it will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) * attempt to set_geometry and recalibrate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) * but for some reason these don't work at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) * this point (lost interrupt).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) udelay(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) tp_ops->dev_select(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) SELECT_MASK(drive, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) udelay(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) tp_ops->write_devctl(hwif, ATA_NIEN | ATA_DEVCTL_OBS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) memset(&tf, 0, sizeof(tf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) tf.feature = SETFEATURES_XFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) tf.nsect = speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) tp_ops->tf_load(drive, &tf, IDE_VALID_FEATURE | IDE_VALID_NSECT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) tp_ops->exec_command(hwif, ATA_CMD_SET_FEATURES);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) if (drive->dev_flags & IDE_DFLAG_NIEN_QUIRK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) error = __ide_wait_stat(drive, drive->ready_stat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) ATA_BUSY | ATA_DRQ | ATA_ERR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) WAIT_CMD, &stat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) SELECT_MASK(drive, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) (void) ide_dump_status(drive, "set_drive_speed_status", stat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (speed >= XFER_SW_DMA_0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) id[ATA_ID_UDMA_MODES] &= ~0xFF00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) id[ATA_ID_MWDMA_MODES] &= ~0x0700;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) id[ATA_ID_SWDMA_MODES] &= ~0x0700;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (ata_id_is_cfa(id))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) id[ATA_ID_CFA_MODES] &= ~0x0E00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) } else if (ata_id_is_cfa(id))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) id[ATA_ID_CFA_MODES] &= ~0x01C0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) skip:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) #ifdef CONFIG_BLK_DEV_IDEDMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) if (speed >= XFER_SW_DMA_0 && (drive->dev_flags & IDE_DFLAG_USING_DMA))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) hwif->dma_ops->dma_host_set(drive, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) else if (hwif->dma_ops) /* check if host supports DMA */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) ide_dma_off_quietly(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) if (speed >= XFER_UDMA_0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) i = 1 << (speed - XFER_UDMA_0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) id[ATA_ID_UDMA_MODES] |= (i << 8 | i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) } else if (ata_id_is_cfa(id) && speed >= XFER_MW_DMA_3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) i = speed - XFER_MW_DMA_2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) id[ATA_ID_CFA_MODES] |= i << 9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) } else if (speed >= XFER_MW_DMA_0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) i = 1 << (speed - XFER_MW_DMA_0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) id[ATA_ID_MWDMA_MODES] |= (i << 8 | i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) } else if (speed >= XFER_SW_DMA_0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) i = 1 << (speed - XFER_SW_DMA_0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) id[ATA_ID_SWDMA_MODES] |= (i << 8 | i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) } else if (ata_id_is_cfa(id) && speed >= XFER_PIO_5) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) i = speed - XFER_PIO_4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) id[ATA_ID_CFA_MODES] |= i << 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) if (!drive->init_speed)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) drive->init_speed = speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) drive->current_speed = speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) * This should get invoked any time we exit the driver to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) * wait for an interrupt response from a drive. handler() points
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) * at the appropriate code to handle the next interrupt, and a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) * timer is started to prevent us from waiting forever in case
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) * something goes wrong (see the ide_timer_expiry() handler later on).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) * See also ide_execute_command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) void __ide_set_handler(ide_drive_t *drive, ide_handler_t *handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) unsigned int timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) ide_hwif_t *hwif = drive->hwif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) BUG_ON(hwif->handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) hwif->handler = handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) hwif->timer.expires = jiffies + timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) hwif->req_gen_timer = hwif->req_gen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) add_timer(&hwif->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) void ide_set_handler(ide_drive_t *drive, ide_handler_t *handler,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) unsigned int timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) ide_hwif_t *hwif = drive->hwif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) spin_lock_irqsave(&hwif->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) __ide_set_handler(drive, handler, timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) spin_unlock_irqrestore(&hwif->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) EXPORT_SYMBOL(ide_set_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) * ide_execute_command - execute an IDE command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) * @drive: IDE drive to issue the command against
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) * @cmd: command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) * @handler: handler for next phase
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) * @timeout: timeout for command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) * Helper function to issue an IDE command. This handles the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) * atomicity requirements, command timing and ensures that the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) * handler and IRQ setup do not race. All IDE command kick off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) * should go via this function or do equivalent locking.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) void ide_execute_command(ide_drive_t *drive, struct ide_cmd *cmd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) ide_handler_t *handler, unsigned timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) ide_hwif_t *hwif = drive->hwif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) spin_lock_irqsave(&hwif->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) if ((cmd->protocol != ATAPI_PROT_DMA &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) cmd->protocol != ATAPI_PROT_PIO) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) __ide_set_handler(drive, handler, timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) hwif->tp_ops->exec_command(hwif, cmd->tf.command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) * Drive takes 400nS to respond, we must avoid the IRQ being
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) * serviced before that.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) * FIXME: we could skip this delay with care on non shared devices
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) ndelay(400);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) spin_unlock_irqrestore(&hwif->lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) * ide_wait_not_busy() waits for the currently selected device on the hwif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) * to report a non-busy status, see comments in ide_probe_port().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) u8 stat = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) while (timeout--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) * Turn this into a schedule() sleep once I'm sure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) * about locking issues (2.5 work ?).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) mdelay(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) stat = hwif->tp_ops->read_status(hwif);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) if ((stat & ATA_BUSY) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) * Assume a value of 0xff means nothing is connected to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) * the interface and it doesn't implement the pull-down
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) * resistor on D7.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) if (stat == 0xff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) touch_nmi_watchdog();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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