+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
- * Copyright (C) 1998-2002 Linux ATA Development
- * Andre Hedrick <andre@linux-ide.org>
- * Copyright (C) 2003 Red Hat
- * Copyright (C) 2003-2005, 2007 Bartlomiej Zolnierkiewicz
- */
-
-/*
- * Mostly written by Mark Lord <mlord@pobox.com>
- * and Gadi Oxman <gadio@netvision.net.il>
- * and Andre Hedrick <andre@linux-ide.org>
- *
- * This is the IDE/ATA disk driver, as evolved from hd.c and ide.c.
- */
-
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/timer.h>
-#include <linux/mm.h>
-#include <linux/interrupt.h>
-#include <linux/major.h>
-#include <linux/errno.h>
-#include <linux/genhd.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/mutex.h>
-#include <linux/leds.h>
-#include <linux/ide.h>
-
-#include <asm/byteorder.h>
-#include <asm/irq.h>
-#include <linux/uaccess.h>
-#include <asm/io.h>
-#include <asm/div64.h>
-
-#include "ide-disk.h"
-
-static const u8 ide_rw_cmds[] = {
- ATA_CMD_READ_MULTI,
- ATA_CMD_WRITE_MULTI,
- ATA_CMD_READ_MULTI_EXT,
- ATA_CMD_WRITE_MULTI_EXT,
- ATA_CMD_PIO_READ,
- ATA_CMD_PIO_WRITE,
- ATA_CMD_PIO_READ_EXT,
- ATA_CMD_PIO_WRITE_EXT,
- ATA_CMD_READ,
- ATA_CMD_WRITE,
- ATA_CMD_READ_EXT,
- ATA_CMD_WRITE_EXT,
-};
-
-static void ide_tf_set_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 dma)
-{
- u8 index, lba48, write;
-
- lba48 = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 2 : 0;
- write = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 1 : 0;
-
- if (dma) {
- cmd->protocol = ATA_PROT_DMA;
- index = 8;
- } else {
- cmd->protocol = ATA_PROT_PIO;
- if (drive->mult_count) {
- cmd->tf_flags |= IDE_TFLAG_MULTI_PIO;
- index = 0;
- } else
- index = 4;
- }
-
- cmd->tf.command = ide_rw_cmds[index + lba48 + write];
-}
-
-/*
- * __ide_do_rw_disk() issues READ and WRITE commands to a disk,
- * using LBA if supported, or CHS otherwise, to address sectors.
- */
-static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
- sector_t block)
-{
- ide_hwif_t *hwif = drive->hwif;
- u16 nsectors = (u16)blk_rq_sectors(rq);
- u8 lba48 = !!(drive->dev_flags & IDE_DFLAG_LBA48);
- u8 dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
- struct ide_cmd cmd;
- struct ide_taskfile *tf = &cmd.tf;
- ide_startstop_t rc;
-
- if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && lba48 && dma) {
- if (block + blk_rq_sectors(rq) > 1ULL << 28)
- dma = 0;
- else
- lba48 = 0;
- }
-
- memset(&cmd, 0, sizeof(cmd));
- cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
- cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
-
- if (drive->dev_flags & IDE_DFLAG_LBA) {
- if (lba48) {
- pr_debug("%s: LBA=0x%012llx\n", drive->name,
- (unsigned long long)block);
-
- tf->nsect = nsectors & 0xff;
- tf->lbal = (u8) block;
- tf->lbam = (u8)(block >> 8);
- tf->lbah = (u8)(block >> 16);
- tf->device = ATA_LBA;
-
- tf = &cmd.hob;
- tf->nsect = (nsectors >> 8) & 0xff;
- tf->lbal = (u8)(block >> 24);
- if (sizeof(block) != 4) {
- tf->lbam = (u8)((u64)block >> 32);
- tf->lbah = (u8)((u64)block >> 40);
- }
-
- cmd.valid.out.hob = IDE_VALID_OUT_HOB;
- cmd.valid.in.hob = IDE_VALID_IN_HOB;
- cmd.tf_flags |= IDE_TFLAG_LBA48;
- } else {
- tf->nsect = nsectors & 0xff;
- tf->lbal = block;
- tf->lbam = block >>= 8;
- tf->lbah = block >>= 8;
- tf->device = ((block >> 8) & 0xf) | ATA_LBA;
- }
- } else {
- unsigned int sect, head, cyl, track;
-
- track = (int)block / drive->sect;
- sect = (int)block % drive->sect + 1;
- head = track % drive->head;
- cyl = track / drive->head;
-
- pr_debug("%s: CHS=%u/%u/%u\n", drive->name, cyl, head, sect);
-
- tf->nsect = nsectors & 0xff;
- tf->lbal = sect;
- tf->lbam = cyl;
- tf->lbah = cyl >> 8;
- tf->device = head;
- }
-
- cmd.tf_flags |= IDE_TFLAG_FS;
-
- if (rq_data_dir(rq))
- cmd.tf_flags |= IDE_TFLAG_WRITE;
-
- ide_tf_set_cmd(drive, &cmd, dma);
- cmd.rq = rq;
-
- if (dma == 0) {
- ide_init_sg_cmd(&cmd, nsectors << 9);
- ide_map_sg(drive, &cmd);
- }
-
- rc = do_rw_taskfile(drive, &cmd);
-
- if (rc == ide_stopped && dma) {
- /* fallback to PIO */
- cmd.tf_flags |= IDE_TFLAG_DMA_PIO_FALLBACK;
- ide_tf_set_cmd(drive, &cmd, 0);
- ide_init_sg_cmd(&cmd, nsectors << 9);
- rc = do_rw_taskfile(drive, &cmd);
- }
-
- return rc;
-}
-
-/*
- * 268435455 == 137439 MB or 28bit limit
- * 320173056 == 163929 MB or 48bit addressing
- * 1073741822 == 549756 MB or 48bit addressing fake drive
- */
-
-static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
- sector_t block)
-{
- ide_hwif_t *hwif = drive->hwif;
-
- BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED);
- BUG_ON(blk_rq_is_passthrough(rq));
-
- ledtrig_disk_activity(rq_data_dir(rq) == WRITE);
-
- pr_debug("%s: %sing: block=%llu, sectors=%u\n",
- drive->name, rq_data_dir(rq) == READ ? "read" : "writ",
- (unsigned long long)block, blk_rq_sectors(rq));
-
- if (hwif->rw_disk)
- hwif->rw_disk(drive, rq);
-
- return __ide_do_rw_disk(drive, rq, block);
-}
-
-/*
- * Queries for true maximum capacity of the drive.
- * Returns maximum LBA address (> 0) of the drive, 0 if failed.
- */
-static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48)
-{
- struct ide_cmd cmd;
- struct ide_taskfile *tf = &cmd.tf;
- u64 addr = 0;
-
- memset(&cmd, 0, sizeof(cmd));
- if (lba48)
- tf->command = ATA_CMD_READ_NATIVE_MAX_EXT;
- else
- tf->command = ATA_CMD_READ_NATIVE_MAX;
- tf->device = ATA_LBA;
-
- cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
- cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
- if (lba48) {
- cmd.valid.out.hob = IDE_VALID_OUT_HOB;
- cmd.valid.in.hob = IDE_VALID_IN_HOB;
- cmd.tf_flags = IDE_TFLAG_LBA48;
- }
-
- ide_no_data_taskfile(drive, &cmd);
-
- /* if OK, compute maximum address value */
- if (!(tf->status & ATA_ERR))
- addr = ide_get_lba_addr(&cmd, lba48) + 1;
-
- return addr;
-}
-
-/*
- * Sets maximum virtual LBA address of the drive.
- * Returns new maximum virtual LBA address (> 0) or 0 on failure.
- */
-static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48)
-{
- struct ide_cmd cmd;
- struct ide_taskfile *tf = &cmd.tf;
- u64 addr_set = 0;
-
- addr_req--;
-
- memset(&cmd, 0, sizeof(cmd));
- tf->lbal = (addr_req >> 0) & 0xff;
- tf->lbam = (addr_req >>= 8) & 0xff;
- tf->lbah = (addr_req >>= 8) & 0xff;
- if (lba48) {
- cmd.hob.lbal = (addr_req >>= 8) & 0xff;
- cmd.hob.lbam = (addr_req >>= 8) & 0xff;
- cmd.hob.lbah = (addr_req >>= 8) & 0xff;
- tf->command = ATA_CMD_SET_MAX_EXT;
- } else {
- tf->device = (addr_req >>= 8) & 0x0f;
- tf->command = ATA_CMD_SET_MAX;
- }
- tf->device |= ATA_LBA;
-
- cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
- cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
- if (lba48) {
- cmd.valid.out.hob = IDE_VALID_OUT_HOB;
- cmd.valid.in.hob = IDE_VALID_IN_HOB;
- cmd.tf_flags = IDE_TFLAG_LBA48;
- }
-
- ide_no_data_taskfile(drive, &cmd);
-
- /* if OK, compute maximum address value */
- if (!(tf->status & ATA_ERR))
- addr_set = ide_get_lba_addr(&cmd, lba48) + 1;
-
- return addr_set;
-}
-
-static unsigned long long sectors_to_MB(unsigned long long n)
-{
- n <<= 9; /* make it bytes */
- do_div(n, 1000000); /* make it MB */
- return n;
-}
-
-/*
- * Some disks report total number of sectors instead of
- * maximum sector address. We list them here.
- */
-static const struct drive_list_entry hpa_list[] = {
- { "ST340823A", NULL },
- { "ST320413A", NULL },
- { "ST310211A", NULL },
- { NULL, NULL }
-};
-
-static u64 ide_disk_hpa_get_native_capacity(ide_drive_t *drive, int lba48)
-{
- u64 capacity, set_max;
-
- capacity = drive->capacity64;
- set_max = idedisk_read_native_max_address(drive, lba48);
-
- if (ide_in_drive_list(drive->id, hpa_list)) {
- /*
- * Since we are inclusive wrt to firmware revisions do this
- * extra check and apply the workaround only when needed.
- */
- if (set_max == capacity + 1)
- set_max--;
- }
-
- return set_max;
-}
-
-static u64 ide_disk_hpa_set_capacity(ide_drive_t *drive, u64 set_max, int lba48)
-{
- set_max = idedisk_set_max_address(drive, set_max, lba48);
- if (set_max)
- drive->capacity64 = set_max;
-
- return set_max;
-}
-
-static void idedisk_check_hpa(ide_drive_t *drive)
-{
- u64 capacity, set_max;
- int lba48 = ata_id_lba48_enabled(drive->id);
-
- capacity = drive->capacity64;
- set_max = ide_disk_hpa_get_native_capacity(drive, lba48);
-
- if (set_max <= capacity)
- return;
-
- drive->probed_capacity = set_max;
-
- printk(KERN_INFO "%s: Host Protected Area detected.\n"
- "\tcurrent capacity is %llu sectors (%llu MB)\n"
- "\tnative capacity is %llu sectors (%llu MB)\n",
- drive->name,
- capacity, sectors_to_MB(capacity),
- set_max, sectors_to_MB(set_max));
-
- if ((drive->dev_flags & IDE_DFLAG_NOHPA) == 0)
- return;
-
- set_max = ide_disk_hpa_set_capacity(drive, set_max, lba48);
- if (set_max)
- printk(KERN_INFO "%s: Host Protected Area disabled.\n",
- drive->name);
-}
-
-static int ide_disk_get_capacity(ide_drive_t *drive)
-{
- u16 *id = drive->id;
- int lba;
-
- if (ata_id_lba48_enabled(id)) {
- /* drive speaks 48-bit LBA */
- lba = 1;
- drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
- } else if (ata_id_has_lba(id) && ata_id_is_lba_capacity_ok(id)) {
- /* drive speaks 28-bit LBA */
- lba = 1;
- drive->capacity64 = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
- } else {
- /* drive speaks boring old 28-bit CHS */
- lba = 0;
- drive->capacity64 = drive->cyl * drive->head * drive->sect;
- }
-
- drive->probed_capacity = drive->capacity64;
-
- if (lba) {
- drive->dev_flags |= IDE_DFLAG_LBA;
-
- /*
- * If this device supports the Host Protected Area feature set,
- * then we may need to change our opinion about its capacity.
- */
- if (ata_id_hpa_enabled(id))
- idedisk_check_hpa(drive);
- }
-
- /* limit drive capacity to 137GB if LBA48 cannot be used */
- if ((drive->dev_flags & IDE_DFLAG_LBA48) == 0 &&
- drive->capacity64 > 1ULL << 28) {
- printk(KERN_WARNING "%s: cannot use LBA48 - full capacity "
- "%llu sectors (%llu MB)\n",
- drive->name, (unsigned long long)drive->capacity64,
- sectors_to_MB(drive->capacity64));
- drive->probed_capacity = drive->capacity64 = 1ULL << 28;
- }
-
- if ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) &&
- (drive->dev_flags & IDE_DFLAG_LBA48)) {
- if (drive->capacity64 > 1ULL << 28) {
- printk(KERN_INFO "%s: cannot use LBA48 DMA - PIO mode"
- " will be used for accessing sectors "
- "> %u\n", drive->name, 1 << 28);
- } else
- drive->dev_flags &= ~IDE_DFLAG_LBA48;
- }
-
- return 0;
-}
-
-static void ide_disk_unlock_native_capacity(ide_drive_t *drive)
-{
- u16 *id = drive->id;
- int lba48 = ata_id_lba48_enabled(id);
-
- if ((drive->dev_flags & IDE_DFLAG_LBA) == 0 ||
- ata_id_hpa_enabled(id) == 0)
- return;
-
- /*
- * according to the spec the SET MAX ADDRESS command shall be
- * immediately preceded by a READ NATIVE MAX ADDRESS command
- */
- if (!ide_disk_hpa_get_native_capacity(drive, lba48))
- return;
-
- if (ide_disk_hpa_set_capacity(drive, drive->probed_capacity, lba48))
- drive->dev_flags |= IDE_DFLAG_NOHPA; /* disable HPA on resume */
-}
-
-static bool idedisk_prep_rq(ide_drive_t *drive, struct request *rq)
-{
- struct ide_cmd *cmd;
-
- if (req_op(rq) != REQ_OP_FLUSH)
- return true;
-
- if (ide_req(rq)->special) {
- cmd = ide_req(rq)->special;
- memset(cmd, 0, sizeof(*cmd));
- } else {
- cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC);
- }
-
- /* FIXME: map struct ide_taskfile on rq->cmd[] */
- BUG_ON(cmd == NULL);
-
- if (ata_id_flush_ext_enabled(drive->id) &&
- (drive->capacity64 >= (1UL << 28)))
- cmd->tf.command = ATA_CMD_FLUSH_EXT;
- else
- cmd->tf.command = ATA_CMD_FLUSH;
- cmd->valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
- cmd->tf_flags = IDE_TFLAG_DYN;
- cmd->protocol = ATA_PROT_NODATA;
- rq->cmd_flags &= ~REQ_OP_MASK;
- rq->cmd_flags |= REQ_OP_DRV_OUT;
- ide_req(rq)->type = ATA_PRIV_TASKFILE;
- ide_req(rq)->special = cmd;
- cmd->rq = rq;
-
- return true;
-}
-
-ide_devset_get(multcount, mult_count);
-
-/*
- * This is tightly woven into the driver->do_special can not touch.
- * DON'T do it again until a total personality rewrite is committed.
- */
-static int set_multcount(ide_drive_t *drive, int arg)
-{
- struct request *rq;
-
- if (arg < 0 || arg > (drive->id[ATA_ID_MAX_MULTSECT] & 0xff))
- return -EINVAL;
-
- if (drive->special_flags & IDE_SFLAG_SET_MULTMODE)
- return -EBUSY;
-
- rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, 0);
- ide_req(rq)->type = ATA_PRIV_TASKFILE;
-
- drive->mult_req = arg;
- drive->special_flags |= IDE_SFLAG_SET_MULTMODE;
- blk_execute_rq(NULL, rq, 0);
- blk_put_request(rq);
-
- return (drive->mult_count == arg) ? 0 : -EIO;
-}
-
-ide_devset_get_flag(nowerr, IDE_DFLAG_NOWERR);
-
-static int set_nowerr(ide_drive_t *drive, int arg)
-{
- if (arg < 0 || arg > 1)
- return -EINVAL;
-
- if (arg)
- drive->dev_flags |= IDE_DFLAG_NOWERR;
- else
- drive->dev_flags &= ~IDE_DFLAG_NOWERR;
-
- drive->bad_wstat = arg ? BAD_R_STAT : BAD_W_STAT;
-
- return 0;
-}
-
-static int ide_do_setfeature(ide_drive_t *drive, u8 feature, u8 nsect)
-{
- struct ide_cmd cmd;
-
- memset(&cmd, 0, sizeof(cmd));
- cmd.tf.feature = feature;
- cmd.tf.nsect = nsect;
- cmd.tf.command = ATA_CMD_SET_FEATURES;
- cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
- cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
-
- return ide_no_data_taskfile(drive, &cmd);
-}
-
-static void update_flush(ide_drive_t *drive)
-{
- u16 *id = drive->id;
- bool wc = false;
-
- if (drive->dev_flags & IDE_DFLAG_WCACHE) {
- unsigned long long capacity;
- int barrier;
- /*
- * We must avoid issuing commands a drive does not
- * understand or we may crash it. We check flush cache
- * is supported. We also check we have the LBA48 flush
- * cache if the drive capacity is too large. By this
- * time we have trimmed the drive capacity if LBA48 is
- * not available so we don't need to recheck that.
- */
- capacity = ide_gd_capacity(drive);
- barrier = ata_id_flush_enabled(id) &&
- (drive->dev_flags & IDE_DFLAG_NOFLUSH) == 0 &&
- ((drive->dev_flags & IDE_DFLAG_LBA48) == 0 ||
- capacity <= (1ULL << 28) ||
- ata_id_flush_ext_enabled(id));
-
- printk(KERN_INFO "%s: cache flushes %ssupported\n",
- drive->name, barrier ? "" : "not ");
-
- if (barrier) {
- wc = true;
- drive->prep_rq = idedisk_prep_rq;
- }
- }
-
- blk_queue_write_cache(drive->queue, wc, false);
-}
-
-ide_devset_get_flag(wcache, IDE_DFLAG_WCACHE);
-
-static int set_wcache(ide_drive_t *drive, int arg)
-{
- int err = 1;
-
- if (arg < 0 || arg > 1)
- return -EINVAL;
-
- if (ata_id_flush_enabled(drive->id)) {
- err = ide_do_setfeature(drive,
- arg ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF, 0);
- if (err == 0) {
- if (arg)
- drive->dev_flags |= IDE_DFLAG_WCACHE;
- else
- drive->dev_flags &= ~IDE_DFLAG_WCACHE;
- }
- }
-
- update_flush(drive);
-
- return err;
-}
-
-static int do_idedisk_flushcache(ide_drive_t *drive)
-{
- struct ide_cmd cmd;
-
- memset(&cmd, 0, sizeof(cmd));
- if (ata_id_flush_ext_enabled(drive->id))
- cmd.tf.command = ATA_CMD_FLUSH_EXT;
- else
- cmd.tf.command = ATA_CMD_FLUSH;
- cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
- cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
-
- return ide_no_data_taskfile(drive, &cmd);
-}
-
-ide_devset_get(acoustic, acoustic);
-
-static int set_acoustic(ide_drive_t *drive, int arg)
-{
- if (arg < 0 || arg > 254)
- return -EINVAL;
-
- ide_do_setfeature(drive,
- arg ? SETFEATURES_AAM_ON : SETFEATURES_AAM_OFF, arg);
-
- drive->acoustic = arg;
-
- return 0;
-}
-
-ide_devset_get_flag(addressing, IDE_DFLAG_LBA48);
-
-/*
- * drive->addressing:
- * 0: 28-bit
- * 1: 48-bit
- * 2: 48-bit capable doing 28-bit
- */
-static int set_addressing(ide_drive_t *drive, int arg)
-{
- if (arg < 0 || arg > 2)
- return -EINVAL;
-
- if (arg && ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) ||
- ata_id_lba48_enabled(drive->id) == 0))
- return -EIO;
-
- if (arg == 2)
- arg = 0;
-
- if (arg)
- drive->dev_flags |= IDE_DFLAG_LBA48;
- else
- drive->dev_flags &= ~IDE_DFLAG_LBA48;
-
- return 0;
-}
-
-ide_ext_devset_rw(acoustic, acoustic);
-ide_ext_devset_rw(address, addressing);
-ide_ext_devset_rw(multcount, multcount);
-ide_ext_devset_rw(wcache, wcache);
-
-ide_ext_devset_rw_sync(nowerr, nowerr);
-
-static int ide_disk_check(ide_drive_t *drive, const char *s)
-{
- return 1;
-}
-
-static void ide_disk_setup(ide_drive_t *drive)
-{
- struct ide_disk_obj *idkp = drive->driver_data;
- struct request_queue *q = drive->queue;
- ide_hwif_t *hwif = drive->hwif;
- u16 *id = drive->id;
- char *m = (char *)&id[ATA_ID_PROD];
- unsigned long long capacity;
-
- ide_proc_register_driver(drive, idkp->driver);
-
- if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0)
- return;
-
- if (drive->dev_flags & IDE_DFLAG_REMOVABLE) {
- /*
- * Removable disks (eg. SYQUEST); ignore 'WD' drives
- */
- if (m[0] != 'W' || m[1] != 'D')
- drive->dev_flags |= IDE_DFLAG_DOORLOCKING;
- }
-
- (void)set_addressing(drive, 1);
-
- if (drive->dev_flags & IDE_DFLAG_LBA48) {
- int max_s = 2048;
-
- if (max_s > hwif->rqsize)
- max_s = hwif->rqsize;
-
- blk_queue_max_hw_sectors(q, max_s);
- }
-
- printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name,
- queue_max_sectors(q) / 2);
-
- if (ata_id_is_ssd(id)) {
- blk_queue_flag_set(QUEUE_FLAG_NONROT, q);
- blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, q);
- }
-
- /* calculate drive capacity, and select LBA if possible */
- ide_disk_get_capacity(drive);
-
- /*
- * if possible, give fdisk access to more of the drive,
- * by correcting bios_cyls:
- */
- capacity = ide_gd_capacity(drive);
-
- if ((drive->dev_flags & IDE_DFLAG_FORCED_GEOM) == 0) {
- if (ata_id_lba48_enabled(drive->id)) {
- /* compatibility */
- drive->bios_sect = 63;
- drive->bios_head = 255;
- }
-
- if (drive->bios_sect && drive->bios_head) {
- unsigned int cap0 = capacity; /* truncate to 32 bits */
- unsigned int cylsz, cyl;
-
- if (cap0 != capacity)
- drive->bios_cyl = 65535;
- else {
- cylsz = drive->bios_sect * drive->bios_head;
- cyl = cap0 / cylsz;
- if (cyl > 65535)
- cyl = 65535;
- if (cyl > drive->bios_cyl)
- drive->bios_cyl = cyl;
- }
- }
- }
- printk(KERN_INFO "%s: %llu sectors (%llu MB)",
- drive->name, capacity, sectors_to_MB(capacity));
-
- /* Only print cache size when it was specified */
- if (id[ATA_ID_BUF_SIZE])
- printk(KERN_CONT " w/%dKiB Cache", id[ATA_ID_BUF_SIZE] / 2);
-
- printk(KERN_CONT ", CHS=%d/%d/%d\n",
- drive->bios_cyl, drive->bios_head, drive->bios_sect);
-
- /* write cache enabled? */
- if ((id[ATA_ID_CSFO] & 1) || ata_id_wcache_enabled(id))
- drive->dev_flags |= IDE_DFLAG_WCACHE;
-
- set_wcache(drive, 1);
-
- if ((drive->dev_flags & IDE_DFLAG_LBA) == 0 &&
- (drive->head == 0 || drive->head > 16))
- printk(KERN_ERR "%s: invalid geometry: %d physical heads?\n",
- drive->name, drive->head);
-}
-
-static void ide_disk_flush(ide_drive_t *drive)
-{
- if (ata_id_flush_enabled(drive->id) == 0 ||
- (drive->dev_flags & IDE_DFLAG_WCACHE) == 0)
- return;
-
- if (do_idedisk_flushcache(drive))
- printk(KERN_INFO "%s: wcache flush failed!\n", drive->name);
-}
-
-static int ide_disk_init_media(ide_drive_t *drive, struct gendisk *disk)
-{
- return 0;
-}
-
-static int ide_disk_set_doorlock(ide_drive_t *drive, struct gendisk *disk,
- int on)
-{
- struct ide_cmd cmd;
- int ret;
-
- if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0)
- return 0;
-
- memset(&cmd, 0, sizeof(cmd));
- cmd.tf.command = on ? ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK;
- cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
- cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
-
- ret = ide_no_data_taskfile(drive, &cmd);
-
- if (ret)
- drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
-
- return ret;
-}
-
-const struct ide_disk_ops ide_ata_disk_ops = {
- .check = ide_disk_check,
- .unlock_native_capacity = ide_disk_unlock_native_capacity,
- .get_capacity = ide_disk_get_capacity,
- .setup = ide_disk_setup,
- .flush = ide_disk_flush,
- .init_media = ide_disk_init_media,
- .set_doorlock = ide_disk_set_doorlock,
- .do_request = ide_do_rw_disk,
- .ioctl = ide_disk_ioctl,
- .compat_ioctl = ide_disk_ioctl,
-};
projects / linux-block.git / blobdiff