/*
- * linux/drivers/ide/ide-disk.c Version 1.18 Mar 05, 2003
- *
- * 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 <alan@redhat.com>
+ * 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
*/
/*
* This is the IDE/ATA disk driver, as evolved from hd.c and ide.c.
*/
-#define IDEDISK_VERSION "1.18"
-
-//#define DEBUG
-
-#include <linux/module.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/mutex.h>
#include <linux/leds.h>
-
-#define _IDE_DISK
-
#include <linux/ide.h>
#include <asm/byteorder.h>
#include <asm/io.h>
#include <asm/div64.h>
-struct ide_disk_obj {
- ide_drive_t *drive;
- ide_driver_t *driver;
- struct gendisk *disk;
- struct kref kref;
- unsigned int openers; /* protected by BKL for now */
+#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 DEFINE_MUTEX(idedisk_ref_mutex);
-
-#define to_ide_disk(obj) container_of(obj, struct ide_disk_obj, kref)
-
-#define ide_disk_g(disk) \
- container_of((disk)->private_data, struct ide_disk_obj, driver)
-
-static struct ide_disk_obj *ide_disk_get(struct gendisk *disk)
-{
- struct ide_disk_obj *idkp = NULL;
-
- mutex_lock(&idedisk_ref_mutex);
- idkp = ide_disk_g(disk);
- if (idkp)
- kref_get(&idkp->kref);
- mutex_unlock(&idedisk_ref_mutex);
- return idkp;
-}
-
-static void ide_disk_release(struct kref *);
-
-static void ide_disk_put(struct ide_disk_obj *idkp)
-{
- mutex_lock(&idedisk_ref_mutex);
- kref_put(&idkp->kref, ide_disk_release);
- mutex_unlock(&idedisk_ref_mutex);
-}
-
-/*
- * lba_capacity_is_ok() performs a sanity check on the claimed "lba_capacity"
- * value for this drive (from its reported identification information).
- *
- * Returns: 1 if lba_capacity looks sensible
- * 0 otherwise
- *
- * It is called only once for each drive.
- */
-static int lba_capacity_is_ok (struct hd_driveid *id)
+static void ide_tf_set_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 dma)
{
- unsigned long lba_sects, chs_sects, head, tail;
+ u8 index, lba48, write;
- /* No non-LBA info .. so valid! */
- if (id->cyls == 0)
- return 1;
+ lba48 = (cmd->tf_flags & IDE_TFLAG_LBA48) ? 2 : 0;
+ write = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 1 : 0;
- /*
- * The ATA spec tells large drives to return
- * C/H/S = 16383/16/63 independent of their size.
- * Some drives can be jumpered to use 15 heads instead of 16.
- * Some drives can be jumpered to use 4092 cyls instead of 16383.
- */
- if ((id->cyls == 16383
- || (id->cyls == 4092 && id->cur_cyls == 16383)) &&
- id->sectors == 63 &&
- (id->heads == 15 || id->heads == 16) &&
- (id->lba_capacity >= 16383*63*id->heads))
- return 1;
-
- lba_sects = id->lba_capacity;
- chs_sects = id->cyls * id->heads * id->sectors;
-
- /* perform a rough sanity check on lba_sects: within 10% is OK */
- if ((lba_sects - chs_sects) < chs_sects/10)
- return 1;
-
- /* some drives have the word order reversed */
- head = ((lba_sects >> 16) & 0xffff);
- tail = (lba_sects & 0xffff);
- lba_sects = (head | (tail << 16));
- if ((lba_sects - chs_sects) < chs_sects/10) {
- id->lba_capacity = lba_sects;
- return 1; /* lba_capacity is (now) good */
+ 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;
}
- return 0; /* lba_capacity value may be bad */
+ 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)
+static ide_startstop_t __ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
+ sector_t block)
{
- ide_hwif_t *hwif = HWIF(drive);
- unsigned int dma = drive->using_dma;
- u8 lba48 = (drive->addressing == 1) ? 1 : 0;
- u8 command = WIN_NOP;
- ata_nsector_t nsectors;
- ide_task_t task;
- struct ide_taskfile *tf = &task.tf;
-
- nsectors.all = (u16) rq->nr_sectors;
+ 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 + rq->nr_sectors > 1ULL << 28)
+ if (block + blk_rq_sectors(rq) > 1ULL << 28)
dma = 0;
else
lba48 = 0;
}
- if (!dma) {
- ide_init_sg_cmd(drive, rq);
- ide_map_sg(drive, rq);
- }
-
- memset(&task, 0, sizeof(task));
- task.tf_flags = IDE_TFLAG_NO_SELECT_MASK; /* FIXME? */
- task.tf_flags |= (IDE_TFLAG_OUT_TF | IDE_TFLAG_OUT_DEVICE);
+ 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->select.b.lba) {
+ if (drive->dev_flags & IDE_DFLAG_LBA) {
if (lba48) {
pr_debug("%s: LBA=0x%012llx\n", drive->name,
(unsigned long long)block);
- tf->hob_nsect = nsectors.b.high;
- tf->hob_lbal = (u8)(block >> 24);
- if (sizeof(block) != 4) {
- tf->hob_lbam = (u8)((u64)block >> 32);
- tf->hob_lbah = (u8)((u64)block >> 40);
- }
-
- tf->nsect = nsectors.b.low;
+ tf->nsect = nsectors & 0xff;
tf->lbal = (u8) block;
tf->lbam = (u8)(block >> 8);
tf->lbah = (u8)(block >> 16);
-#ifdef DEBUG
- printk("%s: 0x%02x%02x 0x%02x%02x%02x%02x%02x%02x\n",
- drive->name, tf->hob_nsect, tf->nsect,
- tf->hob_lbah, tf->hob_lbam, tf->hob_lbal,
- tf->lbah, tf->lbam, tf->lbal);
-#endif
- task.tf_flags |= (IDE_TFLAG_LBA48 | IDE_TFLAG_OUT_HOB);
+ 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.b.low;
+ tf->nsect = nsectors & 0xff;
tf->lbal = block;
tf->lbam = block >>= 8;
tf->lbah = block >>= 8;
- tf->device = (block >> 8) & 0xf;
+ tf->device = ((block >> 8) & 0xf) | ATA_LBA;
}
} else {
- unsigned int sect,head,cyl,track;
+ unsigned int sect, head, cyl, track;
+
track = (int)block / drive->sect;
sect = (int)block % drive->sect + 1;
head = track % drive->head;
pr_debug("%s: CHS=%u/%u/%u\n", drive->name, cyl, head, sect);
- tf->nsect = nsectors.b.low;
+ tf->nsect = nsectors & 0xff;
tf->lbal = sect;
tf->lbam = cyl;
tf->lbah = cyl >> 8;
tf->device = head;
}
- ide_tf_load(drive, &task);
+ cmd.tf_flags |= IDE_TFLAG_FS;
- if (dma) {
- if (!hwif->dma_setup(drive)) {
- if (rq_data_dir(rq)) {
- command = lba48 ? WIN_WRITEDMA_EXT : WIN_WRITEDMA;
- if (drive->vdma)
- command = lba48 ? WIN_WRITE_EXT: WIN_WRITE;
- } else {
- command = lba48 ? WIN_READDMA_EXT : WIN_READDMA;
- if (drive->vdma)
- command = lba48 ? WIN_READ_EXT: WIN_READ;
- }
- hwif->dma_exec_cmd(drive, command);
- hwif->dma_start(drive);
- return ide_started;
- }
- /* fallback to PIO */
- ide_init_sg_cmd(drive, rq);
- }
+ if (rq_data_dir(rq))
+ cmd.tf_flags |= IDE_TFLAG_WRITE;
- if (rq_data_dir(rq) == READ) {
+ ide_tf_set_cmd(drive, &cmd, dma);
+ cmd.rq = rq;
- if (drive->mult_count) {
- hwif->data_phase = TASKFILE_MULTI_IN;
- command = lba48 ? WIN_MULTREAD_EXT : WIN_MULTREAD;
- } else {
- hwif->data_phase = TASKFILE_IN;
- command = lba48 ? WIN_READ_EXT : WIN_READ;
- }
-
- ide_execute_command(drive, command, &task_in_intr, WAIT_CMD, NULL);
- return ide_started;
- } else {
- if (drive->mult_count) {
- hwif->data_phase = TASKFILE_MULTI_OUT;
- command = lba48 ? WIN_MULTWRITE_EXT : WIN_MULTWRITE;
- } else {
- hwif->data_phase = TASKFILE_OUT;
- command = lba48 ? WIN_WRITE_EXT : WIN_WRITE;
- }
+ if (dma == 0) {
+ ide_init_sg_cmd(&cmd, nsectors << 9);
+ ide_map_sg(drive, &cmd);
+ }
- /* FIXME: ->OUTBSYNC ? */
- hwif->OUTB(command, IDE_COMMAND_REG);
+ rc = do_rw_taskfile(drive, &cmd);
- return pre_task_out_intr(drive, rq);
+ 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;
}
/*
* 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)
+static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
+ sector_t block)
{
- ide_hwif_t *hwif = HWIF(drive);
-
- BUG_ON(drive->blocked);
+ ide_hwif_t *hwif = drive->hwif;
- if (!blk_fs_request(rq)) {
- blk_dump_rq_flags(rq, "ide_do_rw_disk - bad command");
- ide_end_request(drive, 0, 0);
- return ide_stopped;
- }
+ BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED);
+ BUG_ON(!blk_fs_request(rq));
ledtrig_ide_activity();
- pr_debug("%s: %sing: block=%llu, sectors=%lu, buffer=0x%08lx\n",
+ pr_debug("%s: %sing: block=%llu, sectors=%u, buffer=0x%08lx\n",
drive->name, rq_data_dir(rq) == READ ? "read" : "writ",
- (unsigned long long)block, rq->nr_sectors,
+ (unsigned long long)block, blk_rq_sectors(rq),
(unsigned long)rq->buffer);
if (hwif->rw_disk)
*/
static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48)
{
- ide_task_t args;
- struct ide_taskfile *tf = &args.tf;
+ struct ide_cmd cmd;
+ struct ide_taskfile *tf = &cmd.tf;
u64 addr = 0;
- /* Create IDE/ATA command request structure */
- memset(&args, 0, sizeof(ide_task_t));
+ memset(&cmd, 0, sizeof(cmd));
if (lba48)
- tf->command = WIN_READ_NATIVE_MAX_EXT;
+ tf->command = ATA_CMD_READ_NATIVE_MAX_EXT;
else
- tf->command = WIN_READ_NATIVE_MAX;
+ tf->command = ATA_CMD_READ_NATIVE_MAX;
tf->device = ATA_LBA;
- /* submit command request */
- ide_no_data_taskfile(drive, &args);
+
+ 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 & 0x01) == 0) {
- u32 high, low;
+ if (!(tf->status & ATA_ERR))
+ addr = ide_get_lba_addr(&cmd, lba48) + 1;
- if (lba48)
- high = (tf->hob_lbah << 16) | (tf->hob_lbam << 8) |
- tf->hob_lbal;
- else
- high = tf->device & 0xf;
- low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal;
- addr = ((__u64)high << 24) | low;
- addr++; /* since the return value is (maxlba - 1), we add 1 */
- }
return addr;
}
*/
static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48)
{
- ide_task_t args;
- struct ide_taskfile *tf = &args.tf;
+ struct ide_cmd cmd;
+ struct ide_taskfile *tf = &cmd.tf;
u64 addr_set = 0;
addr_req--;
- /* Create IDE/ATA command request structure */
- memset(&args, 0, sizeof(ide_task_t));
+
+ 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) {
- tf->hob_lbal = (addr_req >>= 8) & 0xff;
- tf->hob_lbam = (addr_req >>= 8) & 0xff;
- tf->hob_lbah = (addr_req >>= 8) & 0xff;
- tf->command = WIN_SET_MAX_EXT;
+ 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 = WIN_SET_MAX;
+ tf->command = ATA_CMD_SET_MAX;
}
tf->device |= ATA_LBA;
- /* submit command request */
- ide_no_data_taskfile(drive, &args);
- /* if OK, compute maximum address value */
- if ((tf->status & 0x01) == 0) {
- u32 high, low;
- if (lba48)
- high = (tf->hob_lbah << 16) | (tf->hob_lbam << 8) |
- tf->hob_lbal;
- else
- high = tf->device & 0xf;
- low = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal;
- addr_set = ((__u64)high << 24) | low;
- addr_set++;
+ 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;
}
}
/*
- * Bits 10 of command_set_1 and cfs_enable_1 must be equal,
- * so on non-buggy drives we need test only one.
- * However, we should also check whether these fields are valid.
- */
-static inline int idedisk_supports_hpa(const struct hd_driveid *id)
-{
- return (id->command_set_1 & 0x0400) && (id->cfs_enable_1 & 0x0400);
-}
-
-/*
- * The same here.
- */
-static inline int idedisk_supports_lba48(const struct hd_driveid *id)
-{
- return (id->command_set_2 & 0x0400) && (id->cfs_enable_2 & 0x0400)
- && id->lba_capacity_2;
-}
-
-/*
* 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 void idedisk_check_hpa(ide_drive_t *drive)
+static u64 ide_disk_hpa_get_native_capacity(ide_drive_t *drive, int lba48)
{
- unsigned long long capacity, set_max;
- int lba48 = idedisk_supports_lba48(drive->id);
+ u64 capacity, set_max;
capacity = drive->capacity64;
-
- set_max = idedisk_read_native_max_address(drive, lba48);
+ set_max = idedisk_read_native_max_address(drive, lba48);
if (ide_in_drive_list(drive->id, hpa_list)) {
/*
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",
capacity, sectors_to_MB(capacity),
set_max, sectors_to_MB(set_max));
- set_max = idedisk_set_max_address(drive, set_max, lba48);
+ if ((drive->dev_flags & IDE_DFLAG_NOHPA) == 0)
+ return;
- if (set_max) {
- drive->capacity64 = set_max;
+ 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);
- }
}
-/*
- * Compute drive->capacity, the full capacity of the drive
- * Called with drive->id != NULL.
- *
- * To compute capacity, this uses either of
- *
- * 1. CHS value set by user (whatever user sets will be trusted)
- * 2. LBA value from target drive (require new ATA feature)
- * 3. LBA value from system BIOS (new one is OK, old one may break)
- * 4. CHS value from system BIOS (traditional style)
- *
- * in above order (i.e., if value of higher priority is available,
- * reset will be ignored).
- */
-static void init_idedisk_capacity (ide_drive_t *drive)
+static int ide_disk_get_capacity(ide_drive_t *drive)
{
- struct hd_driveid *id = drive->id;
- /*
- * If this drive supports the Host Protected Area feature set,
- * then we may need to change our opinion about the drive's capacity.
- */
- int hpa = idedisk_supports_hpa(id);
+ u16 *id = drive->id;
+ int lba;
- if (idedisk_supports_lba48(id)) {
+ if (ata_id_lba48_enabled(id)) {
/* drive speaks 48-bit LBA */
- drive->select.b.lba = 1;
- drive->capacity64 = id->lba_capacity_2;
- if (hpa)
- idedisk_check_hpa(drive);
- } else if ((id->capability & 2) && lba_capacity_is_ok(id)) {
+ 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 */
- drive->select.b.lba = 1;
- drive->capacity64 = id->lba_capacity;
- if (hpa)
- idedisk_check_hpa(drive);
+ 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;
}
-}
-static sector_t idedisk_capacity (ide_drive_t *drive)
-{
- return drive->capacity64 - drive->sect0;
-}
-
-#ifdef CONFIG_IDE_PROC_FS
-static int smart_enable(ide_drive_t *drive)
-{
- ide_task_t args;
- struct ide_taskfile *tf = &args.tf;
-
- memset(&args, 0, sizeof(ide_task_t));
- tf->feature = SMART_ENABLE;
- tf->lbam = SMART_LCYL_PASS;
- tf->lbah = SMART_HCYL_PASS;
- tf->command = WIN_SMART;
- return ide_no_data_taskfile(drive, &args);
-}
+ drive->probed_capacity = drive->capacity64;
-static int get_smart_data(ide_drive_t *drive, u8 *buf, u8 sub_cmd)
-{
- ide_task_t args;
- struct ide_taskfile *tf = &args.tf;
-
- memset(&args, 0, sizeof(ide_task_t));
- tf->feature = sub_cmd;
- tf->nsect = 0x01;
- tf->lbam = SMART_LCYL_PASS;
- tf->lbah = SMART_HCYL_PASS;
- tf->command = WIN_SMART;
- args.command_type = IDE_DRIVE_TASK_IN;
- args.data_phase = TASKFILE_IN;
- args.handler = &task_in_intr;
- (void) smart_enable(drive);
- return ide_raw_taskfile(drive, &args, buf);
-}
+ if (lba) {
+ drive->dev_flags |= IDE_DFLAG_LBA;
-static int proc_idedisk_read_cache
- (char *page, char **start, off_t off, int count, int *eof, void *data)
-{
- ide_drive_t *drive = (ide_drive_t *) data;
- char *out = page;
- int len;
+ /*
+ * 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);
+ }
- if (drive->id_read)
- len = sprintf(out,"%i\n", drive->id->buf_size / 2);
- else
- len = sprintf(out,"(none)\n");
- PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
-}
+ /* 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;
+ }
-static int proc_idedisk_read_capacity
- (char *page, char **start, off_t off, int count, int *eof, void *data)
-{
- ide_drive_t*drive = (ide_drive_t *)data;
- int len;
+ 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;
+ }
- len = sprintf(page,"%llu\n", (long long)idedisk_capacity(drive));
- PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
+ return 0;
}
-static int proc_idedisk_read_smart_thresholds
- (char *page, char **start, off_t off, int count, int *eof, void *data)
+static u64 ide_disk_set_capacity(ide_drive_t *drive, u64 capacity)
{
- ide_drive_t *drive = (ide_drive_t *)data;
- int len = 0, i = 0;
-
- if (get_smart_data(drive, page, SMART_READ_THRESHOLDS) == 0) {
- unsigned short *val = (unsigned short *) page;
- char *out = ((char *)val) + (SECTOR_WORDS * 4);
- page = out;
- do {
- out += sprintf(out, "%04x%c", le16_to_cpu(*val), (++i & 7) ? ' ' : '\n');
- val += 1;
- } while (i < (SECTOR_WORDS * 2));
- len = out - page;
- }
- PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
-}
+ u64 set = min(capacity, drive->probed_capacity);
+ u16 *id = drive->id;
+ int lba48 = ata_id_lba48_enabled(id);
-static int proc_idedisk_read_smart_values
- (char *page, char **start, off_t off, int count, int *eof, void *data)
-{
- ide_drive_t *drive = (ide_drive_t *)data;
- int len = 0, i = 0;
-
- if (get_smart_data(drive, page, SMART_READ_VALUES) == 0) {
- unsigned short *val = (unsigned short *) page;
- char *out = ((char *)val) + (SECTOR_WORDS * 4);
- page = out;
- do {
- out += sprintf(out, "%04x%c", le16_to_cpu(*val), (++i & 7) ? ' ' : '\n');
- val += 1;
- } while (i < (SECTOR_WORDS * 2));
- len = out - page;
+ if ((drive->dev_flags & IDE_DFLAG_LBA) == 0 ||
+ ata_id_hpa_enabled(id) == 0)
+ goto out;
+
+ /*
+ * according to the spec the SET MAX ADDRESS command shall be
+ * immediately preceded by a READ NATIVE MAX ADDRESS command
+ */
+ capacity = ide_disk_hpa_get_native_capacity(drive, lba48);
+ if (capacity == 0)
+ goto out;
+
+ set = ide_disk_hpa_set_capacity(drive, set, lba48);
+ if (set) {
+ /* needed for ->resume to disable HPA */
+ drive->dev_flags |= IDE_DFLAG_NOHPA;
+ return set;
}
- PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
+out:
+ return drive->capacity64;
}
-static ide_proc_entry_t idedisk_proc[] = {
- { "cache", S_IFREG|S_IRUGO, proc_idedisk_read_cache, NULL },
- { "capacity", S_IFREG|S_IRUGO, proc_idedisk_read_capacity, NULL },
- { "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL },
- { "smart_values", S_IFREG|S_IRUSR, proc_idedisk_read_smart_values, NULL },
- { "smart_thresholds", S_IFREG|S_IRUSR, proc_idedisk_read_smart_thresholds, NULL },
- { NULL, 0, NULL, NULL }
-};
-#endif /* CONFIG_IDE_PROC_FS */
-
static void idedisk_prepare_flush(struct request_queue *q, struct request *rq)
{
ide_drive_t *drive = q->queuedata;
+ struct ide_cmd *cmd = kmalloc(sizeof(*cmd), GFP_ATOMIC);
- memset(rq->cmd, 0, sizeof(rq->cmd));
+ /* FIXME: map struct ide_taskfile on rq->cmd[] */
+ BUG_ON(cmd == NULL);
- if (ide_id_has_flush_cache_ext(drive->id) &&
+ memset(cmd, 0, sizeof(*cmd));
+ if (ata_id_flush_ext_enabled(drive->id) &&
(drive->capacity64 >= (1UL << 28)))
- rq->cmd[0] = WIN_FLUSH_CACHE_EXT;
+ cmd->tf.command = ATA_CMD_FLUSH_EXT;
else
- rq->cmd[0] = WIN_FLUSH_CACHE;
+ 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_type = REQ_TYPE_ATA_TASK;
- rq->cmd_flags |= REQ_SOFTBARRIER;
- rq->buffer = rq->cmd;
+ rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
+ rq->special = cmd;
+ cmd->rq = rq;
}
+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;
+ struct request *rq;
+ int error;
- if (arg < 0 || arg > drive->id->max_multsect)
+ if (arg < 0 || arg > (drive->id[ATA_ID_MAX_MULTSECT] & 0xff))
return -EINVAL;
- if (drive->special.b.set_multmode)
+ if (drive->special_flags & IDE_SFLAG_SET_MULTMODE)
return -EBUSY;
- ide_init_drive_cmd (&rq);
- rq.cmd_type = REQ_TYPE_ATA_CMD;
+
+ rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
+ rq->cmd_type = REQ_TYPE_ATA_TASKFILE;
+
drive->mult_req = arg;
- drive->special.b.set_multmode = 1;
- (void) ide_do_drive_cmd (drive, &rq, ide_wait);
+ drive->special_flags |= IDE_SFLAG_SET_MULTMODE;
+ error = blk_execute_rq(drive->queue, 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 (ide_spin_wait_hwgroup(drive))
- return -EBUSY;
- drive->nowerr = arg;
+ 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;
- spin_unlock_irq(&ide_lock);
+
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_ordered(ide_drive_t *drive)
{
- struct hd_driveid *id = drive->id;
+ u16 *id = drive->id;
unsigned ordered = QUEUE_ORDERED_NONE;
prepare_flush_fn *prep_fn = NULL;
- if (drive->wcache) {
+ if (drive->dev_flags & IDE_DFLAG_WCACHE) {
unsigned long long capacity;
int barrier;
/*
* time we have trimmed the drive capacity if LBA48 is
* not available so we don't need to recheck that.
*/
- capacity = idedisk_capacity(drive);
- barrier = ide_id_has_flush_cache(id) && !drive->noflush &&
- (drive->addressing == 0 || capacity <= (1ULL << 28) ||
- ide_id_has_flush_cache_ext(id));
+ 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 ");
blk_queue_ordered(drive->queue, ordered, prep_fn);
}
-static int write_cache(ide_drive_t *drive, int arg)
+ide_devset_get_flag(wcache, IDE_DFLAG_WCACHE);
+
+static int set_wcache(ide_drive_t *drive, int arg)
{
- ide_task_t args;
int err = 1;
if (arg < 0 || arg > 1)
return -EINVAL;
- if (ide_id_has_flush_cache(drive->id)) {
- memset(&args, 0, sizeof(ide_task_t));
- args.tf.feature = arg ?
- SETFEATURES_EN_WCACHE : SETFEATURES_DIS_WCACHE;
- args.tf.command = WIN_SETFEATURES;
- err = ide_no_data_taskfile(drive, &args);
- if (err == 0)
- drive->wcache = arg;
+ 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_ordered(drive);
return err;
}
-static int do_idedisk_flushcache (ide_drive_t *drive)
+static int do_idedisk_flushcache(ide_drive_t *drive)
{
- ide_task_t args;
+ struct ide_cmd cmd;
- memset(&args, 0, sizeof(ide_task_t));
- if (ide_id_has_flush_cache_ext(drive->id))
- args.tf.command = WIN_FLUSH_CACHE_EXT;
+ memset(&cmd, 0, sizeof(cmd));
+ if (ata_id_flush_ext_enabled(drive->id))
+ cmd.tf.command = ATA_CMD_FLUSH_EXT;
else
- args.tf.command = WIN_FLUSH_CACHE;
- return ide_no_data_taskfile(drive, &args);
+ 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);
}
-static int set_acoustic (ide_drive_t *drive, int arg)
-{
- ide_task_t args;
+ide_devset_get(acoustic, acoustic);
+static int set_acoustic(ide_drive_t *drive, int arg)
+{
if (arg < 0 || arg > 254)
return -EINVAL;
- memset(&args, 0, sizeof(ide_task_t));
- args.tf.feature = arg ? SETFEATURES_EN_AAM : SETFEATURES_DIS_AAM;
- args.tf.nsect = arg;
- args.tf.command = WIN_SETFEATURES;
- ide_no_data_taskfile(drive, &args);
+ 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_lba_addressing(ide_drive_t *drive, int arg)
+static int set_addressing(ide_drive_t *drive, int arg)
{
if (arg < 0 || arg > 2)
return -EINVAL;
- drive->addressing = 0;
+ if (arg && ((drive->hwif->host_flags & IDE_HFLAG_NO_LBA48) ||
+ ata_id_lba48_enabled(drive->id) == 0))
+ return -EIO;
- if (drive->hwif->host_flags & IDE_HFLAG_NO_LBA48)
- return 0;
+ if (arg == 2)
+ arg = 0;
+
+ if (arg)
+ drive->dev_flags |= IDE_DFLAG_LBA48;
+ else
+ drive->dev_flags &= ~IDE_DFLAG_LBA48;
- if (!idedisk_supports_lba48(drive->id))
- return -EIO;
- drive->addressing = arg;
return 0;
}
-#ifdef CONFIG_IDE_PROC_FS
-static void idedisk_add_settings(ide_drive_t *drive)
+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)
{
- struct hd_driveid *id = drive->id;
-
- ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->bios_cyl, NULL);
- ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL);
- ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL);
- ide_add_setting(drive, "address", SETTING_RW, TYPE_BYTE, 0, 2, 1, 1, &drive->addressing, set_lba_addressing);
- ide_add_setting(drive, "bswap", SETTING_READ, TYPE_BYTE, 0, 1, 1, 1, &drive->bswap, NULL);
- ide_add_setting(drive, "multcount", SETTING_RW, TYPE_BYTE, 0, id->max_multsect, 1, 1, &drive->mult_count, set_multcount);
- ide_add_setting(drive, "nowerr", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->nowerr, set_nowerr);
- ide_add_setting(drive, "lun", SETTING_RW, TYPE_INT, 0, 7, 1, 1, &drive->lun, NULL);
- ide_add_setting(drive, "wcache", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->wcache, write_cache);
- ide_add_setting(drive, "acoustic", SETTING_RW, TYPE_BYTE, 0, 254, 1, 1, &drive->acoustic, set_acoustic);
- ide_add_setting(drive, "failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->failures, NULL);
- ide_add_setting(drive, "max_failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->max_failures, NULL);
+ return 1;
}
-#else
-static inline void idedisk_add_settings(ide_drive_t *drive) { ; }
-#endif
-static void idedisk_setup (ide_drive_t *drive)
+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;
- struct hd_driveid *id = drive->id;
+ u16 *id = drive->id;
+ char *m = (char *)&id[ATA_ID_PROD];
unsigned long long capacity;
- idedisk_add_settings(drive);
+ ide_proc_register_driver(drive, idkp->driver);
- if (drive->id_read == 0)
+ if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0)
return;
- if (drive->removable) {
+ if (drive->dev_flags & IDE_DFLAG_REMOVABLE) {
/*
- * Removable disks (eg. SYQUEST); ignore 'WD' drives
+ * Removable disks (eg. SYQUEST); ignore 'WD' drives
*/
- if (id->model[0] != 'W' || id->model[1] != 'D') {
- drive->doorlocking = 1;
- }
+ if (m[0] != 'W' || m[1] != 'D')
+ drive->dev_flags |= IDE_DFLAG_DOORLOCKING;
}
- (void)set_lba_addressing(drive, 1);
+ (void)set_addressing(drive, 1);
- if (drive->addressing == 1) {
+ if (drive->dev_flags & IDE_DFLAG_LBA48) {
int max_s = 2048;
if (max_s > hwif->rqsize)
max_s = hwif->rqsize;
- blk_queue_max_sectors(drive->queue, max_s);
+ blk_queue_max_sectors(q, max_s);
}
- printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name, drive->queue->max_sectors / 2);
+ printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name,
+ queue_max_sectors(q) / 2);
- /* calculate drive capacity, and select LBA if possible */
- init_idedisk_capacity (drive);
+ if (ata_id_is_ssd(id))
+ queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q);
- /* limit drive capacity to 137GB if LBA48 cannot be used */
- if (drive->addressing == 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->capacity64 = 1ULL << 28;
- }
-
- if ((hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA) && drive->addressing) {
- 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->addressing = 0;
- }
+ /* 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 = idedisk_capacity (drive);
- if (!drive->forced_geom) {
+ capacity = ide_gd_capacity(drive);
- if (idedisk_supports_lba48(drive->id)) {
+ 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;
drive->name, capacity, sectors_to_MB(capacity));
/* Only print cache size when it was specified */
- if (id->buf_size)
- printk (" w/%dKiB Cache", id->buf_size/2);
+ 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->csfo & 1) || (id->cfs_enable_1 & (1 << 5)))
- drive->wcache = 1;
+ if ((id[ATA_ID_CSFO] & 1) || ata_id_wcache_enabled(id))
+ drive->dev_flags |= IDE_DFLAG_WCACHE;
- write_cache(drive, 1);
+ 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);
+ drive->dev_flags &= ~IDE_DFLAG_ATTACH;
+ } else
+ drive->dev_flags |= IDE_DFLAG_ATTACH;
}
-static void ide_cacheflush_p(ide_drive_t *drive)
+static void ide_disk_flush(ide_drive_t *drive)
{
- if (!drive->wcache || !ide_id_has_flush_cache(drive->id))
+ 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 void ide_disk_remove(ide_drive_t *drive)
-{
- struct ide_disk_obj *idkp = drive->driver_data;
- struct gendisk *g = idkp->disk;
-
- ide_proc_unregister_driver(drive, idkp->driver);
-
- del_gendisk(g);
-
- ide_cacheflush_p(drive);
-
- ide_disk_put(idkp);
-}
-
-static void ide_disk_release(struct kref *kref)
-{
- struct ide_disk_obj *idkp = to_ide_disk(kref);
- ide_drive_t *drive = idkp->drive;
- struct gendisk *g = idkp->disk;
-
- drive->driver_data = NULL;
- g->private_data = NULL;
- put_disk(g);
- kfree(idkp);
-}
-
-static int ide_disk_probe(ide_drive_t *drive);
-
-/*
- * On HPA drives the capacity needs to be
- * reinitilized on resume otherwise the disk
- * can not be used and a hard reset is required
- */
-static void ide_disk_resume(ide_drive_t *drive)
+static int ide_disk_init_media(ide_drive_t *drive, struct gendisk *disk)
{
- if (idedisk_supports_hpa(drive->id))
- init_idedisk_capacity(drive);
-}
-
-static void ide_device_shutdown(ide_drive_t *drive)
-{
-#ifdef CONFIG_ALPHA
- /* On Alpha, halt(8) doesn't actually turn the machine off,
- it puts you into the sort of firmware monitor. Typically,
- it's used to boot another kernel image, so it's not much
- different from reboot(8). Therefore, we don't need to
- spin down the disk in this case, especially since Alpha
- firmware doesn't handle disks in standby mode properly.
- On the other hand, it's reasonably safe to turn the power
- off when the shutdown process reaches the firmware prompt,
- as the firmware initialization takes rather long time -
- at least 10 seconds, which should be sufficient for
- the disk to expire its write cache. */
- if (system_state != SYSTEM_POWER_OFF) {
-#else
- if (system_state == SYSTEM_RESTART) {
-#endif
- ide_cacheflush_p(drive);
- return;
- }
-
- printk("Shutdown: %s\n", drive->name);
- drive->gendev.bus->suspend(&drive->gendev, PMSG_SUSPEND);
-}
-
-static ide_driver_t idedisk_driver = {
- .gen_driver = {
- .owner = THIS_MODULE,
- .name = "ide-disk",
- .bus = &ide_bus_type,
- },
- .probe = ide_disk_probe,
- .remove = ide_disk_remove,
- .resume = ide_disk_resume,
- .shutdown = ide_device_shutdown,
- .version = IDEDISK_VERSION,
- .media = ide_disk,
- .supports_dsc_overlap = 0,
- .do_request = ide_do_rw_disk,
- .end_request = ide_end_request,
- .error = __ide_error,
- .abort = __ide_abort,
-#ifdef CONFIG_IDE_PROC_FS
- .proc = idedisk_proc,
-#endif
-};
-
-static int idedisk_open(struct inode *inode, struct file *filp)
-{
- struct gendisk *disk = inode->i_bdev->bd_disk;
- struct ide_disk_obj *idkp;
- ide_drive_t *drive;
-
- if (!(idkp = ide_disk_get(disk)))
- return -ENXIO;
-
- drive = idkp->drive;
-
- idkp->openers++;
-
- if (drive->removable && idkp->openers == 1) {
- ide_task_t args;
- memset(&args, 0, sizeof(ide_task_t));
- args.tf.command = WIN_DOORLOCK;
- check_disk_change(inode->i_bdev);
- /*
- * Ignore the return code from door_lock,
- * since the open() has already succeeded,
- * and the door_lock is irrelevant at this point.
- */
- if (drive->doorlocking && ide_no_data_taskfile(drive, &args))
- drive->doorlocking = 0;
- }
return 0;
}
-static int idedisk_release(struct inode *inode, struct file *filp)
-{
- struct gendisk *disk = inode->i_bdev->bd_disk;
- struct ide_disk_obj *idkp = ide_disk_g(disk);
- ide_drive_t *drive = idkp->drive;
-
- if (idkp->openers == 1)
- ide_cacheflush_p(drive);
-
- if (drive->removable && idkp->openers == 1) {
- ide_task_t args;
- memset(&args, 0, sizeof(ide_task_t));
- args.tf.command = WIN_DOORUNLOCK;
- if (drive->doorlocking && ide_no_data_taskfile(drive, &args))
- drive->doorlocking = 0;
- }
-
- idkp->openers--;
-
- ide_disk_put(idkp);
-
- return 0;
-}
-
-static int idedisk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
-{
- struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk);
- ide_drive_t *drive = idkp->drive;
-
- geo->heads = drive->bios_head;
- geo->sectors = drive->bios_sect;
- geo->cylinders = (u16)drive->bios_cyl; /* truncate */
- return 0;
-}
-
-static int idedisk_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- unsigned long flags;
- struct block_device *bdev = inode->i_bdev;
- struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk);
- ide_drive_t *drive = idkp->drive;
- int err, (*setfunc)(ide_drive_t *, int);
- u8 *val;
-
- switch (cmd) {
- case HDIO_GET_ADDRESS: val = &drive->addressing; goto read_val;
- case HDIO_GET_MULTCOUNT: val = &drive->mult_count; goto read_val;
- case HDIO_GET_NOWERR: val = &drive->nowerr; goto read_val;
- case HDIO_GET_WCACHE: val = &drive->wcache; goto read_val;
- case HDIO_GET_ACOUSTIC: val = &drive->acoustic; goto read_val;
- case HDIO_SET_ADDRESS: setfunc = set_lba_addressing; goto set_val;
- case HDIO_SET_MULTCOUNT: setfunc = set_multcount; goto set_val;
- case HDIO_SET_NOWERR: setfunc = set_nowerr; goto set_val;
- case HDIO_SET_WCACHE: setfunc = write_cache; goto set_val;
- case HDIO_SET_ACOUSTIC: setfunc = set_acoustic; goto set_val;
- }
-
- return generic_ide_ioctl(drive, file, bdev, cmd, arg);
-
-read_val:
- mutex_lock(&ide_setting_mtx);
- spin_lock_irqsave(&ide_lock, flags);
- err = *val;
- spin_unlock_irqrestore(&ide_lock, flags);
- mutex_unlock(&ide_setting_mtx);
- return err >= 0 ? put_user(err, (long __user *)arg) : err;
-
-set_val:
- if (bdev != bdev->bd_contains)
- err = -EINVAL;
- else {
- if (!capable(CAP_SYS_ADMIN))
- err = -EACCES;
- else {
- mutex_lock(&ide_setting_mtx);
- err = setfunc(drive, arg);
- mutex_unlock(&ide_setting_mtx);
- }
- }
- return err;
-}
-
-static int idedisk_media_changed(struct gendisk *disk)
+static int ide_disk_set_doorlock(ide_drive_t *drive, struct gendisk *disk,
+ int on)
{
- struct ide_disk_obj *idkp = ide_disk_g(disk);
- ide_drive_t *drive = idkp->drive;
+ struct ide_cmd cmd;
+ int ret;
- /* do not scan partitions twice if this is a removable device */
- if (drive->attach) {
- drive->attach = 0;
+ if ((drive->dev_flags & IDE_DFLAG_DOORLOCKING) == 0)
return 0;
- }
- /* if removable, always assume it was changed */
- return drive->removable;
-}
-
-static int idedisk_revalidate_disk(struct gendisk *disk)
-{
- struct ide_disk_obj *idkp = ide_disk_g(disk);
- set_capacity(disk, idedisk_capacity(idkp->drive));
- return 0;
-}
-
-static struct block_device_operations idedisk_ops = {
- .owner = THIS_MODULE,
- .open = idedisk_open,
- .release = idedisk_release,
- .ioctl = idedisk_ioctl,
- .getgeo = idedisk_getgeo,
- .media_changed = idedisk_media_changed,
- .revalidate_disk= idedisk_revalidate_disk
-};
-
-MODULE_DESCRIPTION("ATA DISK Driver");
-
-static int ide_disk_probe(ide_drive_t *drive)
-{
- struct ide_disk_obj *idkp;
- struct gendisk *g;
-
- /* strstr("foo", "") is non-NULL */
- if (!strstr("ide-disk", drive->driver_req))
- goto failed;
- if (!drive->present)
- goto failed;
- if (drive->media != ide_disk)
- goto failed;
- idkp = kzalloc(sizeof(*idkp), GFP_KERNEL);
- if (!idkp)
- goto failed;
+ 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;
- g = alloc_disk_node(1 << PARTN_BITS,
- hwif_to_node(drive->hwif));
- if (!g)
- goto out_free_idkp;
+ ret = ide_no_data_taskfile(drive, &cmd);
- ide_init_disk(g, drive);
+ if (ret)
+ drive->dev_flags &= ~IDE_DFLAG_DOORLOCKING;
- ide_proc_register_driver(drive, &idedisk_driver);
-
- kref_init(&idkp->kref);
-
- idkp->drive = drive;
- idkp->driver = &idedisk_driver;
- idkp->disk = g;
-
- g->private_data = &idkp->driver;
-
- drive->driver_data = idkp;
-
- idedisk_setup(drive);
- if ((!drive->head || drive->head > 16) && !drive->select.b.lba) {
- printk(KERN_ERR "%s: INVALID GEOMETRY: %d PHYSICAL HEADS?\n",
- drive->name, drive->head);
- drive->attach = 0;
- } else
- drive->attach = 1;
-
- g->minors = 1 << PARTN_BITS;
- g->driverfs_dev = &drive->gendev;
- g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0;
- set_capacity(g, idedisk_capacity(drive));
- g->fops = &idedisk_ops;
- add_disk(g);
- return 0;
-
-out_free_idkp:
- kfree(idkp);
-failed:
- return -ENODEV;
-}
-
-static void __exit idedisk_exit (void)
-{
- driver_unregister(&idedisk_driver.gen_driver);
+ return ret;
}
-static int __init idedisk_init(void)
-{
- return driver_register(&idedisk_driver.gen_driver);
-}
-
-MODULE_ALIAS("ide:*m-disk*");
-module_init(idedisk_init);
-module_exit(idedisk_exit);
-MODULE_LICENSE("GPL");
+const struct ide_disk_ops ide_ata_disk_ops = {
+ .check = ide_disk_check,
+ .set_capacity = ide_disk_set_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,
+};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff