ide: remove drive->driveid

* Factor out HDIO_[OBSOLETE,GET]_IDENTITY ioctls handling
  to ide_get_identity_ioctl().

* Use temporary buffer in ide_get_identity_ioctl() instead
  of accessing drive->id directly.

* Add ide_id_to_hd_driveid() inline to convert raw id into
  struct hd_driveid format (needed on big-endian).

* Use ide_id_to_hd_driveid() in ide_get_identity_ioctl(),
  cleanup ide_fix_driveid() and switch ide to use use raw id.

* Remove no longer needed drive->driveid.

  This leaves us with 3 users of struct hd_driveid in tree:
  - arch/um/drivers/ubd_kern.c
  - drivers/block/xsysace.c
  - drivers/usb/storage/isd200.c

While at it:

* Use ata_id_u{32,64}() and ata_id_has_{dma,lba,iordy}() macros.

There should be no functional changes caused by this patch.
Signed-off-by: 's avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent 4dde4492
......@@ -101,13 +101,14 @@ static void ide_disk_put(struct ide_disk_obj *idkp)
*/
static int lba_capacity_is_ok(u16 *id)
{
struct hd_driveid *driveid = (struct hd_driveid *)id;
unsigned long lba_sects, chs_sects, head, tail;
/* No non-LBA info .. so valid! */
if (id[ATA_ID_CYLS] == 0)
return 1;
lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
/*
* The ATA spec tells large drives to return
* C/H/S = 16383/16/63 independent of their size.
......@@ -118,10 +119,9 @@ static int lba_capacity_is_ok(u16 *id)
(id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
id[ATA_ID_SECTORS] == 63 &&
(id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
(driveid->lba_capacity >= 16383 * 63 * id[ATA_ID_HEADS]))
(lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
return 1;
lba_sects = driveid->lba_capacity;
chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
/* perform a rough sanity check on lba_sects: within 10% is OK */
......@@ -133,7 +133,7 @@ static int lba_capacity_is_ok(u16 *id)
tail = (lba_sects & 0xffff);
lba_sects = (head | (tail << 16));
if ((lba_sects - chs_sects) < chs_sects/10) {
driveid->lba_capacity = lba_sects;
*(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
return 1; /* lba_capacity is (now) good */
}
......@@ -403,7 +403,7 @@ static inline int idedisk_supports_lba48(const u16 *id)
{
return (id[ATA_ID_COMMAND_SET_2] & 0x0400) &&
(id[ATA_ID_CFS_ENABLE_2] & 0x0400) &&
((struct hd_driveid *)id)->lba_capacity_2;
ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
}
/*
......@@ -456,7 +456,6 @@ static void idedisk_check_hpa(ide_drive_t *drive)
static void init_idedisk_capacity(ide_drive_t *drive)
{
struct hd_driveid *driveid = drive->driveid;
u16 *id = drive->id;
/*
* If this drive supports the Host Protected Area feature set,
......@@ -467,13 +466,13 @@ static void init_idedisk_capacity(ide_drive_t *drive)
if (idedisk_supports_lba48(id)) {
/* drive speaks 48-bit LBA */
drive->select.b.lba = 1;
drive->capacity64 = driveid->lba_capacity_2;
drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
if (hpa)
idedisk_check_hpa(drive);
} else if ((driveid->capability & 2) && lba_capacity_is_ok(id)) {
} else if (ata_id_has_lba(id) && lba_capacity_is_ok(id)) {
/* drive speaks 28-bit LBA */
drive->select.b.lba = 1;
drive->capacity64 = driveid->lba_capacity;
drive->capacity64 = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
if (hpa)
idedisk_check_hpa(drive);
} else {
......@@ -622,7 +621,7 @@ static int set_multcount(ide_drive_t *drive, int arg)
struct request *rq;
int error;
if (arg < 0 || arg > drive->driveid->max_multsect)
if (arg < 0 || arg > (drive->id[ATA_ID_MAX_MULTSECT] & 0xff))
return -EINVAL;
if (drive->special.b.set_multmode)
......@@ -775,8 +774,8 @@ static void idedisk_add_settings(ide_drive_t *drive)
ide_add_setting(drive, "address", SETTING_RW, TYPE_BYTE, 0, 2, 1, 1,
&drive->addressing, set_lba_addressing);
ide_add_setting(drive, "multcount", SETTING_RW, TYPE_BYTE, 0,
drive->driveid->max_multsect, 1, 1, &drive->mult_count,
set_multcount);
drive->id[ATA_ID_MAX_MULTSECT] & 0xff, 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,
......
......@@ -649,8 +649,8 @@ static unsigned int ide_get_mode_mask(ide_drive_t *drive, u8 base, u8 req_mode)
case XFER_SW_DMA_0:
if (id[ATA_ID_FIELD_VALID] & 2) {
mask = id[ATA_ID_SWDMA_MODES] & hwif->swdma_mask;
} else if (drive->driveid->tDMA) {
u8 mode = drive->driveid->tDMA;
} else if (id[ATA_ID_OLD_DMA_MODES] >> 8) {
u8 mode = id[ATA_ID_OLD_DMA_MODES] >> 8;
/*
* if the mode is valid convert it to the mask
......@@ -727,7 +727,7 @@ static int ide_tune_dma(ide_drive_t *drive)
ide_hwif_t *hwif = drive->hwif;
u8 speed;
if (drive->nodma || (drive->driveid->capability & 1) == 0)
if (drive->nodma || ata_id_has_dma(drive->id) == 0)
return 0;
/* consult the list of known "bad" drives */
......
......@@ -404,26 +404,10 @@ void ide_fix_driveid(u16 *id)
{
#ifndef __LITTLE_ENDIAN
# ifdef __BIG_ENDIAN
struct hd_driveid *driveid = (struct hd_driveid *)id;
int i;
for (i = 0; i < 256; i++) {
/* these words are accessed as two 8-bit values */
if (i == 47 || i == 49 || i == 51 || i == 52 || i == 59)
continue;
if (i == 60 || i == 61) /* ->lba_capacity is 32-bit */
continue;
if (i == 98 || i == 99) /* ->spg is 32-bit */
continue;
if (i > 99 && i < 104) /* ->lba_capacity_2 is 64-bit */
continue;
for (i = 0; i < 256; i++)
id[i] = __le16_to_cpu(id[i]);
}
driveid->lba_capacity = __le32_to_cpu(driveid->lba_capacity);
driveid->spg = __le32_to_cpu(driveid->spg);
driveid->lba_capacity_2 = __le64_to_cpu(driveid->lba_capacity_2);
# else
# error "Please fix <asm/byteorder.h>"
# endif
......@@ -752,7 +736,7 @@ int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
#endif
/* Skip setting PIO flow-control modes on pre-EIDE drives */
if ((speed & 0xf8) == XFER_PIO_0 && !(drive->driveid->capability & 8))
if ((speed & 0xf8) == XFER_PIO_0 && ata_id_has_iordy(drive->id) == 0)
goto skip;
/*
......
......@@ -102,14 +102,14 @@ u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode)
if (pio_mode != -1) {
printk(KERN_INFO "%s: is on PIO blacklist\n", drive->name);
} else {
pio_mode = drive->driveid->tPIO;
pio_mode = id[ATA_ID_OLD_PIO_MODES] >> 8;
if (pio_mode > 2) { /* 2 is maximum allowed tPIO value */
pio_mode = 2;
overridden = 1;
}
if (id[ATA_ID_FIELD_VALID] & 2) { /* ATA2? */
if (drive->driveid->capability & 8) { /* IORDY sup? */
if (ata_id_has_iordy(id)) {
if (id[ATA_ID_PIO_MODES] & 7) {
overridden = 0;
if (id[ATA_ID_PIO_MODES] & 4)
......
......@@ -87,20 +87,20 @@ static void ide_disk_init_chs(ide_drive_t *drive)
static void ide_disk_init_mult_count(ide_drive_t *drive)
{
struct hd_driveid *id = drive->driveid;
u16 *id = drive->id;
u8 max_multsect = id[ATA_ID_MAX_MULTSECT] & 0xff;
if (id->max_multsect) {
if (max_multsect) {
#ifdef CONFIG_IDEDISK_MULTI_MODE
if ((id->max_multsect / 2) > 1) {
id->multsect = id->max_multsect;
id->multsect_valid = 1;
} else {
id->multsect = 0;
id->multsect_valid = 0;
}
drive->mult_req = id->multsect;
if ((max_multsect / 2) > 1)
id[ATA_ID_MULTSECT] = max_multsect | 0x100;
else
id[ATA_ID_MULTSECT] &= ~0x1ff;
drive->mult_req = id[ATA_ID_MULTSECT] & 0xff;
#endif
if ((id->multsect_valid & 1) && id->multsect)
if ((id[ATA_ID_MULTSECT] & 0x100) &&
(id[ATA_ID_MULTSECT] & 0xff))
drive->special.b.set_multmode = 1;
}
}
......
......@@ -83,7 +83,7 @@ u16 ide_pio_cycle_time(ide_drive_t *drive, u8 pio)
u16 cycle = 0;
if (id[ATA_ID_FIELD_VALID] & 2) {
if (drive->driveid->capability & 8)
if (ata_id_has_iordy(drive->id))
cycle = id[ATA_ID_EIDE_PIO_IORDY];
else
cycle = id[ATA_ID_EIDE_PIO];
......
......@@ -328,7 +328,7 @@ int set_using_dma(ide_drive_t *drive, int arg)
if (arg < 0 || arg > 1)
return -EINVAL;
if ((drive->driveid->capability & 1) == 0)
if (ata_id_has_dma(drive->id) == 0)
goto out;
if (hwif->dma_ops == NULL)
......@@ -502,12 +502,60 @@ static int generic_drive_reset(ide_drive_t *drive)
return ret;
}
static inline void ide_id_to_hd_driveid(u16 *id)
{
#ifdef __BIG_ENDIAN
/* accessed in struct hd_driveid as 8-bit values */
id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]);
/* as 32-bit values */
*(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
*(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG);
/* as 64-bit value */
*(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
#endif
}
static int ide_get_identity_ioctl(ide_drive_t *drive, unsigned int cmd,
unsigned long arg)
{
u16 *id = NULL;
int size = (cmd == HDIO_GET_IDENTITY) ? (ATA_ID_WORDS * 2) : 142;
int rc = 0;
if (drive->id_read == 0) {
rc = -ENOMSG;
goto out;
}
id = kmalloc(size, GFP_KERNEL);
if (id == NULL) {
rc = -ENOMEM;
goto out;
}
memcpy(id, drive->id, size);
ide_id_to_hd_driveid(id);
if (copy_to_user((void __user *)arg, id, size))
rc = -EFAULT;
kfree(id);
out:
return rc;
}
int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
unsigned int cmd, unsigned long arg)
{
unsigned long flags;
ide_driver_t *drv;
void __user *p = (void __user *)arg;
int err = 0, (*setfunc)(ide_drive_t *, int);
u8 *val;
......@@ -528,12 +576,7 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device
case HDIO_GET_IDENTITY:
if (bdev != bdev->bd_contains)
return -EINVAL;
if (drive->id_read == 0)
return -ENOMSG;
if (copy_to_user(p, drive->id, (cmd == HDIO_GET_IDENTITY) ? sizeof(*drive->id) : 142))
return -EFAULT;
return 0;
return ide_get_identity_ioctl(drive, cmd, arg);
case HDIO_GET_NICE:
return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP |
drive->atapi_overlap << IDE_NICE_ATAPI_OVERLAP |
......
......@@ -195,10 +195,10 @@ static void qd6500_set_pio_mode(ide_drive_t *drive, const u8 pio)
* FIXME: use "pio" value
*/
if (!qd_find_disk_type(drive, &active_time, &recovery_time) &&
drive->driveid->tPIO && (id[ATA_ID_FIELD_VALID] & 2) &&
(id[ATA_ID_OLD_PIO_MODES] & 0xff) && (id[ATA_ID_FIELD_VALID] & 2) &&
id[ATA_ID_EIDE_PIO] >= 240) {
printk(KERN_INFO "%s: PIO mode%d\n", drive->name,
drive->driveid->tPIO);
id[ATA_ID_OLD_PIO_MODES] & 0xff);
active_time = 110;
recovery_time = drive->id[ATA_ID_EIDE_PIO] - 120;
}
......
......@@ -88,7 +88,7 @@ static u8 cs5530_udma_filter(ide_drive_t *drive)
if (mate->present == 0)
goto out;
if ((mate->driveid->capability & 1) && __ide_dma_bad_drive(mate) == 0) {
if (ata_id_has_dma(mateid) && __ide_dma_bad_drive(mate) == 0) {
if ((mateid[ATA_ID_FIELD_VALID] & 4) &&
(mateid[ATA_ID_UDMA_MODES] & 7))
goto out;
......
......@@ -470,7 +470,7 @@ static void it821x_quirkproc(ide_drive_t *drive)
/* In raid mode the ident block is slightly buggy
We need to set the bits so that the IDE layer knows
LBA28. LBA48 and DMA ar valid */
drive->driveid->capability |= 3; /* LBA28, DMA */
id[ATA_ID_CAPABILITY] |= (3 << 8); /* LBA28, DMA */
id[ATA_ID_COMMAND_SET_2] |= 0x0400; /* LBA48 valid */
id[ATA_ID_CFS_ENABLE_2] |= 0x0400; /* LBA48 on */
/* Reporting logic */
......@@ -504,7 +504,7 @@ static void it821x_quirkproc(ide_drive_t *drive)
* IDE core that DMA is supported (it821x hardware
* takes care of DMA mode programming).
*/
if (drive->driveid->capability & 1) {
if (ata_id_has_dma(id)) {
id[ATA_ID_MWDMA_MODES] |= 0x0101;
drive->current_speed = XFER_MW_DMA_0;
}
......
......@@ -86,7 +86,7 @@ static void pdc202xx_set_mode(ide_drive_t *drive, const u8 speed)
* Prefetch_EN / IORDY_EN / PA[3:0] bits of register A
*/
AP &= ~0x3f;
if (drive->driveid->capability & 4)
if (ata_id_iordy_disable(drive->id))
AP |= 0x20; /* set IORDY_EN bit */
if (drive->media == ide_disk)
AP |= 0x10; /* set Prefetch_EN bit */
......
......@@ -111,7 +111,7 @@ static u8 sc1200_udma_filter(ide_drive_t *drive)
if (mate->present == 0)
goto out;
if ((mate->driveid->capability & 1) && __ide_dma_bad_drive(mate) == 0) {
if (ata_id_has_dma(mateid) && __ide_dma_bad_drive(mate) == 0) {
if ((mateid[ATA_ID_FIELD_VALID] & 4) &&
(mateid[ATA_ID_UDMA_MODES] & 7))
goto out;
......
......@@ -380,11 +380,7 @@ struct ide_drive_s {
struct request *rq; /* current request */
struct ide_drive_s *next; /* circular list of hwgroup drives */
void *driver_data; /* extra driver data */
union {
/* identification info */
struct hd_driveid *driveid;
u16 *id;
};
u16 *id; /* identification info */
#ifdef CONFIG_IDE_PROC_FS
struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
struct ide_settings_s *settings;/* /proc/ide/ drive settings */
......@@ -1353,8 +1349,7 @@ extern int ide_set_xfer_rate(ide_drive_t *drive, u8 rate);
static inline int ide_dev_has_iordy(u16 *id)
{
return ((id[ATA_ID_FIELD_VALID] & 2) &&
(((struct hd_driveid *)id)->capability & 8)) ? 1 : 0;
return ((id[ATA_ID_FIELD_VALID] & 2) && ata_id_has_iordy(id)) ? 1 : 0;
}
static inline int ide_dev_is_sata(u16 *id)
......
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