#undef REALLY_SLOW_IO /* most systems can safely undef this */
+//#define DEBUG
+
#include <linux/config.h>
#include <linux/module.h>
#include <linux/types.h>
#include <asm/io.h>
#include <asm/div64.h>
-/* FIXME: some day we shouldn't need to look in here! */
-
-#include "legacy/pdc4030.h"
-
/*
* lba_capacity_is_ok() performs a sanity check on the claimed "lba_capacity"
* value for this drive (from its reported identification information).
return 0; /* lba_capacity value may be bad */
}
-static int idedisk_start_tag(ide_drive_t *drive, struct request *rq)
-{
- unsigned long flags;
- int ret = 1;
-
- spin_lock_irqsave(&ide_lock, flags);
-
- if (ata_pending_commands(drive) < drive->queue_depth)
- ret = blk_queue_start_tag(drive->queue, rq);
-
- spin_unlock_irqrestore(&ide_lock, flags);
- return ret;
-}
-
-#ifndef CONFIG_IDE_TASKFILE_IO
-
-/*
- * read_intr() is the handler for disk read/multread interrupts
- */
-static ide_startstop_t read_intr (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- u32 i = 0, nsect = 0, msect = drive->mult_count;
- struct request *rq;
- unsigned long flags;
- u8 stat;
- char *to;
-
- /* new way for dealing with premature shared PCI interrupts */
- if (!OK_STAT(stat=hwif->INB(IDE_STATUS_REG),DATA_READY,BAD_R_STAT)) {
- if (stat & (ERR_STAT|DRQ_STAT)) {
- return DRIVER(drive)->error(drive, "read_intr", stat);
- }
- /* no data yet, so wait for another interrupt */
- ide_set_handler(drive, &read_intr, WAIT_CMD, NULL);
- return ide_started;
- }
-
-read_next:
- rq = HWGROUP(drive)->rq;
- if (msect) {
- if ((nsect = rq->current_nr_sectors) > msect)
- nsect = msect;
- msect -= nsect;
- } else
- nsect = 1;
- to = ide_map_buffer(rq, &flags);
- taskfile_input_data(drive, to, nsect * SECTOR_WORDS);
-#ifdef DEBUG
- printk("%s: read: sectors(%ld-%ld), buffer=0x%08lx, remaining=%ld\n",
- drive->name, rq->sector, rq->sector+nsect-1,
- (unsigned long) rq->buffer+(nsect<<9), rq->nr_sectors-nsect);
-#endif
- ide_unmap_buffer(rq, to, &flags);
- rq->sector += nsect;
- rq->errors = 0;
- i = (rq->nr_sectors -= nsect);
- if (((long)(rq->current_nr_sectors -= nsect)) <= 0)
- ide_end_request(drive, 1, rq->hard_cur_sectors);
- /*
- * Another BH Page walker and DATA INTEGRITY Questioned on ERROR.
- * If passed back up on multimode read, BAD DATA could be ACKED
- * to FILE SYSTEMS above ...
- */
- if (i > 0) {
- if (msect)
- goto read_next;
- ide_set_handler(drive, &read_intr, WAIT_CMD, NULL);
- return ide_started;
- }
- return ide_stopped;
-}
-
-/*
- * write_intr() is the handler for disk write interrupts
- */
-static ide_startstop_t write_intr (ide_drive_t *drive)
-{
- ide_hwgroup_t *hwgroup = HWGROUP(drive);
- ide_hwif_t *hwif = HWIF(drive);
- struct request *rq = hwgroup->rq;
- u32 i = 0;
- u8 stat;
-
- if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG),
- DRIVE_READY, drive->bad_wstat)) {
- printk("%s: write_intr error1: nr_sectors=%ld, stat=0x%02x\n",
- drive->name, rq->nr_sectors, stat);
- } else {
-#ifdef DEBUG
- printk("%s: write: sector %ld, buffer=0x%08lx, remaining=%ld\n",
- drive->name, rq->sector, (unsigned long) rq->buffer,
- rq->nr_sectors-1);
-#endif
- if ((rq->nr_sectors == 1) ^ ((stat & DRQ_STAT) != 0)) {
- rq->sector++;
- rq->errors = 0;
- i = --rq->nr_sectors;
- --rq->current_nr_sectors;
- if (((long)rq->current_nr_sectors) <= 0)
- ide_end_request(drive, 1, rq->hard_cur_sectors);
- if (i > 0) {
- unsigned long flags;
- char *to = ide_map_buffer(rq, &flags);
- taskfile_output_data(drive, to, SECTOR_WORDS);
- ide_unmap_buffer(rq, to, &flags);
- ide_set_handler(drive, &write_intr, WAIT_CMD, NULL);
- return ide_started;
- }
- return ide_stopped;
- }
- /* the original code did this here (?) */
- return ide_stopped;
- }
- return DRIVER(drive)->error(drive, "write_intr", stat);
-}
-
-/*
- * ide_multwrite() transfers a block of up to mcount sectors of data
- * to a drive as part of a disk multiple-sector write operation.
- *
- * Note that we may be called from two contexts - __ide_do_rw_disk() context
- * and IRQ context. The IRQ can happen any time after we've output the
- * full "mcount" number of sectors, so we must make sure we update the
- * state _before_ we output the final part of the data!
- *
- * The update and return to BH is a BLOCK Layer Fakey to get more data
- * to satisfy the hardware atomic segment. If the hardware atomic segment
- * is shorter or smaller than the BH segment then we should be OKAY.
- * This is only valid if we can rewind the rq->current_nr_sectors counter.
- */
-static void ide_multwrite(ide_drive_t *drive, unsigned int mcount)
-{
- ide_hwgroup_t *hwgroup = HWGROUP(drive);
- struct request *rq = &hwgroup->wrq;
-
- do {
- char *buffer;
- int nsect = rq->current_nr_sectors;
- unsigned long flags;
-
- if (nsect > mcount)
- nsect = mcount;
- mcount -= nsect;
- buffer = ide_map_buffer(rq, &flags);
-
- rq->sector += nsect;
- rq->nr_sectors -= nsect;
- rq->current_nr_sectors -= nsect;
-
- /* Do we move to the next bh after this? */
- if (!rq->current_nr_sectors) {
- struct bio *bio = rq->bio;
-
- /*
- * only move to next bio, when we have processed
- * all bvecs in this one.
- */
- if (++bio->bi_idx >= bio->bi_vcnt) {
- bio->bi_idx = bio->bi_vcnt - rq->nr_cbio_segments;
- bio = bio->bi_next;
- }
-
- /* end early early we ran out of requests */
- if (!bio) {
- mcount = 0;
- } else {
- rq->bio = bio;
- rq->nr_cbio_segments = bio_segments(bio);
- rq->current_nr_sectors = bio_cur_sectors(bio);
- rq->hard_cur_sectors = rq->current_nr_sectors;
- }
- }
-
- /*
- * Ok, we're all setup for the interrupt
- * re-entering us on the last transfer.
- */
- taskfile_output_data(drive, buffer, nsect<<7);
- ide_unmap_buffer(rq, buffer, &flags);
- } while (mcount);
-}
-
-/*
- * multwrite_intr() is the handler for disk multwrite interrupts
- */
-static ide_startstop_t multwrite_intr (ide_drive_t *drive)
-{
- ide_hwgroup_t *hwgroup = HWGROUP(drive);
- ide_hwif_t *hwif = HWIF(drive);
- struct request *rq = &hwgroup->wrq;
- struct bio *bio = rq->bio;
- u8 stat;
-
- stat = hwif->INB(IDE_STATUS_REG);
- if (OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) {
- if (stat & DRQ_STAT) {
- /*
- * The drive wants data. Remember rq is the copy
- * of the request
- */
- if (rq->nr_sectors) {
- ide_multwrite(drive, drive->mult_count);
- ide_set_handler(drive, &multwrite_intr, WAIT_CMD, NULL);
- return ide_started;
- }
- } else {
- /*
- * If the copy has all the blocks completed then
- * we can end the original request.
- */
- if (!rq->nr_sectors) { /* all done? */
- bio->bi_idx = bio->bi_vcnt - rq->nr_cbio_segments;
- rq = hwgroup->rq;
- ide_end_request(drive, 1, rq->nr_sectors);
- return ide_stopped;
- }
- }
- bio->bi_idx = bio->bi_vcnt - rq->nr_cbio_segments;
- /* the original code did this here (?) */
- return ide_stopped;
- }
- bio->bi_idx = bio->bi_vcnt - rq->nr_cbio_segments;
- return DRIVER(drive)->error(drive, "multwrite_intr", stat);
-}
-
/*
* __ide_do_rw_disk() issues READ and WRITE commands to a disk,
* using LBA if supported, or CHS otherwise, to address sectors.
- * It also takes care of issuing special DRIVE_CMDs.
*/
-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;
task_ioreg_t command = WIN_NOP;
ata_nsector_t nsectors;
nsectors.all = (u16) rq->nr_sectors;
- if (drive->using_tcq && idedisk_start_tag(drive, rq)) {
- if (!ata_pending_commands(drive))
- BUG();
+ if (hwif->no_lba48_dma && lba48 && dma) {
+ if (block + rq->nr_sectors > 1ULL << 28)
+ dma = 0;
+ }
- return ide_started;
+ if (!dma) {
+ ide_init_sg_cmd(drive, rq);
+ ide_map_sg(drive, rq);
}
if (IDE_CONTROL_REG)
hwif->OUTB(drive->ctl, IDE_CONTROL_REG);
+ /* FIXME: SELECT_MASK(drive, 0) ? */
+
if (drive->select.b.lba) {
if (drive->addressing == 1) {
task_ioreg_t tasklets[10];
- if (blk_rq_tagged(rq)) {
- tasklets[0] = nsectors.b.low;
- tasklets[1] = nsectors.b.high;
- tasklets[2] = rq->tag << 3;
- tasklets[3] = 0;
- } else {
- tasklets[0] = 0;
- tasklets[1] = 0;
- tasklets[2] = nsectors.b.low;
- tasklets[3] = nsectors.b.high;
- }
+ pr_debug("%s: LBA=0x%012llx\n", drive->name, block);
+ tasklets[0] = 0;
+ tasklets[1] = 0;
+ tasklets[2] = nsectors.b.low;
+ tasklets[3] = nsectors.b.high;
tasklets[4] = (task_ioreg_t) block;
tasklets[5] = (task_ioreg_t) (block>>8);
tasklets[6] = (task_ioreg_t) (block>>16);
tasklets[9] = (task_ioreg_t)((u64)block >> 40);
}
#ifdef DEBUG
- printk("%s: %sing: LBAsect=%lu, sectors=%ld, "
- "buffer=0x%08lx, LBAsect=0x%012lx\n",
- drive->name,
- rq_data_dir(rq)==READ?"read":"writ",
- block,
- rq->nr_sectors,
- (unsigned long) rq->buffer,
- block);
printk("%s: 0x%02x%02x 0x%02x%02x%02x%02x%02x%02x\n",
drive->name, tasklets[3], tasklets[2],
tasklets[9], tasklets[8], tasklets[7],
hwif->OUTB(tasklets[6], IDE_HCYL_REG);
hwif->OUTB(0x00|drive->select.all,IDE_SELECT_REG);
} else {
-#ifdef DEBUG
- printk("%s: %sing: LBAsect=%llu, sectors=%ld, "
- "buffer=0x%08lx\n",
- drive->name,
- rq_data_dir(rq)==READ?"read":"writ",
- (unsigned long long)block, rq->nr_sectors,
- (unsigned long) rq->buffer);
-#endif
- if (blk_rq_tagged(rq)) {
- hwif->OUTB(nsectors.b.low, IDE_FEATURE_REG);
- hwif->OUTB(rq->tag << 3, IDE_NSECTOR_REG);
- } else {
- hwif->OUTB(0x00, IDE_FEATURE_REG);
- hwif->OUTB(nsectors.b.low, IDE_NSECTOR_REG);
- }
-
+ hwif->OUTB(0x00, IDE_FEATURE_REG);
+ hwif->OUTB(nsectors.b.low, IDE_NSECTOR_REG);
hwif->OUTB(block, IDE_SECTOR_REG);
hwif->OUTB(block>>=8, IDE_LCYL_REG);
hwif->OUTB(block>>=8, IDE_HCYL_REG);
head = track % drive->head;
cyl = track / drive->head;
- if (blk_rq_tagged(rq)) {
- hwif->OUTB(nsectors.b.low, IDE_FEATURE_REG);
- hwif->OUTB(rq->tag << 3, IDE_NSECTOR_REG);
- } else {
- hwif->OUTB(0x00, IDE_FEATURE_REG);
- hwif->OUTB(nsectors.b.low, IDE_NSECTOR_REG);
- }
+ pr_debug("%s: CHS=%u/%u/%u\n", drive->name, cyl, head, sect);
+ hwif->OUTB(0x00, IDE_FEATURE_REG);
+ hwif->OUTB(nsectors.b.low, IDE_NSECTOR_REG);
hwif->OUTB(cyl, IDE_LCYL_REG);
hwif->OUTB(cyl>>8, IDE_HCYL_REG);
hwif->OUTB(head|drive->select.all,IDE_SELECT_REG);
-#ifdef DEBUG
- printk("%s: %sing: CHS=%d/%d/%d, sectors=%ld, buffer=0x%08lx\n",
- drive->name, rq_data_dir(rq)==READ?"read":"writ", cyl,
- head, sect, rq->nr_sectors, (unsigned long) rq->buffer);
-#endif
}
- if (rq_data_dir(rq) == READ) {
-#ifdef CONFIG_BLK_DEV_IDE_TCQ
- if (blk_rq_tagged(rq))
- return __ide_dma_queued_read(drive);
-#endif
- if (drive->using_dma && !hwif->ide_dma_read(drive))
- return ide_started;
-
- command = ((drive->mult_count) ?
- ((lba48) ? WIN_MULTREAD_EXT : WIN_MULTREAD) :
- ((lba48) ? WIN_READ_EXT : WIN_READ));
- ide_execute_command(drive, command, &read_intr, WAIT_CMD, NULL);
- return ide_started;
- } else if (rq_data_dir(rq) == WRITE) {
- ide_startstop_t startstop;
-#ifdef CONFIG_BLK_DEV_IDE_TCQ
- if (blk_rq_tagged(rq))
- return __ide_dma_queued_write(drive);
-#endif
- if (drive->using_dma && !(HWIF(drive)->ide_dma_write(drive)))
+ 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);
+ }
- command = ((drive->mult_count) ?
- ((lba48) ? WIN_MULTWRITE_EXT : WIN_MULTWRITE) :
- ((lba48) ? WIN_WRITE_EXT : WIN_WRITE));
- hwif->OUTB(command, IDE_COMMAND_REG);
+ if (rq_data_dir(rq) == READ) {
- if (ide_wait_stat(&startstop, drive, DATA_READY,
- drive->bad_wstat, WAIT_DRQ)) {
- printk(KERN_ERR "%s: no DRQ after issuing %s\n",
- drive->name,
- drive->mult_count ? "MULTWRITE" : "WRITE");
- return startstop;
- }
- if (!drive->unmask)
- local_irq_disable();
if (drive->mult_count) {
- ide_hwgroup_t *hwgroup = HWGROUP(drive);
-
- hwgroup->wrq = *rq; /* scratchpad */
- ide_set_handler(drive, &multwrite_intr, WAIT_CMD, NULL);
- ide_multwrite(drive, drive->mult_count);
+ hwif->data_phase = TASKFILE_MULTI_IN;
+ command = lba48 ? WIN_MULTREAD_EXT : WIN_MULTREAD;
} else {
- unsigned long flags;
- char *to = ide_map_buffer(rq, &flags);
- ide_set_handler(drive, &write_intr, WAIT_CMD, NULL);
- taskfile_output_data(drive, to, SECTOR_WORDS);
- ide_unmap_buffer(rq, to, &flags);
+ hwif->data_phase = TASKFILE_IN;
+ command = lba48 ? WIN_READ_EXT : WIN_READ;
}
- return ide_started;
- }
- blk_dump_rq_flags(rq, "__ide_do_rw_disk - bad command");
- ide_end_request(drive, 0, 0);
- return ide_stopped;
-}
-EXPORT_SYMBOL_GPL(__ide_do_rw_disk);
-
-#else /* CONFIG_IDE_TASKFILE_IO */
-
-static ide_startstop_t chs_rw_disk(ide_drive_t *, struct request *, unsigned long);
-static ide_startstop_t lba_28_rw_disk(ide_drive_t *, struct request *, unsigned long);
-static ide_startstop_t lba_48_rw_disk(ide_drive_t *, struct request *, unsigned long long);
-
-/*
- * __ide_do_rw_disk() issues READ and WRITE commands to a disk,
- * using LBA if supported, or CHS otherwise, to address sectors.
- * It also takes care of issuing special DRIVE_CMDs.
- */
-ide_startstop_t __ide_do_rw_disk (ide_drive_t *drive, struct request *rq, sector_t block)
-{
- BUG_ON(drive->blocked);
- 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;
- }
-
- /*
- * 268435455 == 137439 MB or 28bit limit
- *
- * need to add split taskfile operations based on 28bit threshold.
- */
-
- if (drive->using_tcq && idedisk_start_tag(drive, rq)) {
- if (!ata_pending_commands(drive))
- BUG();
+ ide_execute_command(drive, command, &task_in_intr, WAIT_CMD, NULL);
return ide_started;
- }
-
- if (drive->addressing == 1) /* 48-bit LBA */
- return lba_48_rw_disk(drive, rq, (unsigned long long) block);
- if (drive->select.b.lba) /* 28-bit LBA */
- return lba_28_rw_disk(drive, rq, (unsigned long) block);
-
- /* 28-bit CHS : DIE DIE DIE piece of legacy crap!!! */
- return chs_rw_disk(drive, rq, (unsigned long) block);
-}
-EXPORT_SYMBOL_GPL(__ide_do_rw_disk);
-
-static u8 get_command(ide_drive_t *drive, int cmd, ide_task_t *task)
-{
- unsigned int lba48 = (drive->addressing == 1) ? 1 : 0;
-
- if (cmd == READ) {
- task->command_type = IDE_DRIVE_TASK_IN;
- if (drive->using_tcq)
- return lba48 ? WIN_READDMA_QUEUED_EXT : WIN_READDMA_QUEUED;
- if (drive->using_dma)
- return lba48 ? WIN_READDMA_EXT : WIN_READDMA;
- if (drive->mult_count) {
- task->handler = &task_mulin_intr;
- return lba48 ? WIN_MULTREAD_EXT : WIN_MULTREAD;
- }
- task->handler = &task_in_intr;
- return lba48 ? WIN_READ_EXT : WIN_READ;
} else {
- task->command_type = IDE_DRIVE_TASK_RAW_WRITE;
- if (drive->using_tcq)
- return lba48 ? WIN_WRITEDMA_QUEUED_EXT : WIN_WRITEDMA_QUEUED;
- if (drive->using_dma)
- return lba48 ? WIN_WRITEDMA_EXT : WIN_WRITEDMA;
if (drive->mult_count) {
- task->prehandler = &pre_task_mulout_intr;
- task->handler = &task_mulout_intr;
- return lba48 ? WIN_MULTWRITE_EXT : WIN_MULTWRITE;
+ 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;
}
- task->prehandler = &pre_task_out_intr;
- task->handler = &task_out_intr;
- return lba48 ? WIN_WRITE_EXT : WIN_WRITE;
- }
-}
-
-static ide_startstop_t chs_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long block)
-{
- ide_task_t args;
- int sectors;
- ata_nsector_t nsectors;
- unsigned int track = (block / drive->sect);
- unsigned int sect = (block % drive->sect) + 1;
- unsigned int head = (track % drive->head);
- unsigned int cyl = (track / drive->head);
-
- nsectors.all = (u16) rq->nr_sectors;
-
-#ifdef DEBUG
- printk("%s: %sing: ", drive->name, (rq_data_dir(rq)==READ) ? "read" : "writ");
- printk("CHS=%d/%d/%d, ", cyl, head, sect);
- printk("sectors=%ld, ", rq->nr_sectors);
- printk("buffer=0x%08lx\n", (unsigned long) rq->buffer);
-#endif
- memset(&args, 0, sizeof(ide_task_t));
-
- sectors = (rq->nr_sectors == 256) ? 0x00 : rq->nr_sectors;
-
- if (blk_rq_tagged(rq)) {
- args.tfRegister[IDE_FEATURE_OFFSET] = sectors;
- args.tfRegister[IDE_NSECTOR_OFFSET] = rq->tag << 3;
- } else
- args.tfRegister[IDE_NSECTOR_OFFSET] = sectors;
-
- args.tfRegister[IDE_SECTOR_OFFSET] = sect;
- args.tfRegister[IDE_LCYL_OFFSET] = cyl;
- args.tfRegister[IDE_HCYL_OFFSET] = (cyl>>8);
- args.tfRegister[IDE_SELECT_OFFSET] = head;
- args.tfRegister[IDE_SELECT_OFFSET] |= drive->select.all;
- args.tfRegister[IDE_COMMAND_OFFSET] = get_command(drive, rq_data_dir(rq), &args);
- args.rq = (struct request *) rq;
- rq->special = (ide_task_t *)&args;
- return do_rw_taskfile(drive, &args);
-}
-
-static ide_startstop_t lba_28_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long block)
-{
- ide_task_t args;
- int sectors;
- ata_nsector_t nsectors;
-
- nsectors.all = (u16) rq->nr_sectors;
-
-#ifdef DEBUG
- printk("%s: %sing: ", drive->name, (rq_data_dir(rq)==READ) ? "read" : "writ");
- printk("LBAsect=%lld, ", block);
- printk("sectors=%ld, ", rq->nr_sectors);
- printk("buffer=0x%08lx\n", (unsigned long) rq->buffer);
-#endif
-
- memset(&args, 0, sizeof(ide_task_t));
-
- sectors = (rq->nr_sectors == 256) ? 0x00 : rq->nr_sectors;
+ /* FIXME: ->OUTBSYNC ? */
+ hwif->OUTB(command, IDE_COMMAND_REG);
- if (blk_rq_tagged(rq)) {
- args.tfRegister[IDE_FEATURE_OFFSET] = sectors;
- args.tfRegister[IDE_NSECTOR_OFFSET] = rq->tag << 3;
- } else
- args.tfRegister[IDE_NSECTOR_OFFSET] = sectors;
-
- args.tfRegister[IDE_SECTOR_OFFSET] = block;
- args.tfRegister[IDE_LCYL_OFFSET] = (block>>=8);
- args.tfRegister[IDE_HCYL_OFFSET] = (block>>=8);
- args.tfRegister[IDE_SELECT_OFFSET] = ((block>>8)&0x0f);
- args.tfRegister[IDE_SELECT_OFFSET] |= drive->select.all;
- args.tfRegister[IDE_COMMAND_OFFSET] = get_command(drive, rq_data_dir(rq), &args);
- args.rq = (struct request *) rq;
- rq->special = (ide_task_t *)&args;
- return do_rw_taskfile(drive, &args);
+ return pre_task_out_intr(drive, rq);
+ }
}
/*
* 1073741822 == 549756 MB or 48bit addressing fake drive
*/
-static ide_startstop_t lba_48_rw_disk (ide_drive_t *drive, struct request *rq, unsigned long long block)
-{
- ide_task_t args;
- int sectors;
- ata_nsector_t nsectors;
-
- nsectors.all = (u16) rq->nr_sectors;
-
-#ifdef DEBUG
- printk("%s: %sing: ", drive->name, (rq_data_dir(rq)==READ) ? "read" : "writ");
- printk("LBAsect=%lld, ", block);
- printk("sectors=%ld, ", rq->nr_sectors);
- printk("buffer=0x%08lx\n", (unsigned long) rq->buffer);
-#endif
-
- memset(&args, 0, sizeof(ide_task_t));
-
- sectors = (rq->nr_sectors == 65536) ? 0 : rq->nr_sectors;
-
- if (blk_rq_tagged(rq)) {
- args.tfRegister[IDE_FEATURE_OFFSET] = sectors;
- args.tfRegister[IDE_NSECTOR_OFFSET] = rq->tag << 3;
- args.hobRegister[IDE_FEATURE_OFFSET] = sectors >> 8;
- args.hobRegister[IDE_NSECTOR_OFFSET] = 0;
- } else {
- args.tfRegister[IDE_NSECTOR_OFFSET] = sectors;
- args.hobRegister[IDE_NSECTOR_OFFSET] = sectors >> 8;
- }
-
- args.tfRegister[IDE_SECTOR_OFFSET] = block; /* low lba */
- args.tfRegister[IDE_LCYL_OFFSET] = (block>>=8); /* mid lba */
- args.tfRegister[IDE_HCYL_OFFSET] = (block>>=8); /* hi lba */
- args.tfRegister[IDE_SELECT_OFFSET] = drive->select.all;
- args.tfRegister[IDE_COMMAND_OFFSET] = get_command(drive, rq_data_dir(rq), &args);
- args.hobRegister[IDE_SECTOR_OFFSET] = (block>>=8); /* low lba */
- args.hobRegister[IDE_LCYL_OFFSET] = (block>>=8); /* mid lba */
- args.hobRegister[IDE_HCYL_OFFSET] = (block>>=8); /* hi lba */
- args.hobRegister[IDE_SELECT_OFFSET] = drive->select.all;
- args.hobRegister[IDE_CONTROL_OFFSET_HOB]= (drive->ctl|0x80);
- args.rq = (struct request *) rq;
- rq->special = (ide_task_t *)&args;
- return do_rw_taskfile(drive, &args);
-}
-
-#endif /* CONFIG_IDE_TASKFILE_IO */
-
static ide_startstop_t ide_do_rw_disk (ide_drive_t *drive, struct request *rq, sector_t block)
{
ide_hwif_t *hwif = HWIF(drive);
- if (hwif->rw_disk)
- return hwif->rw_disk(drive, rq, block);
- else
- return __ide_do_rw_disk(drive, rq, block);
-}
-
-static int do_idedisk_flushcache(ide_drive_t *drive);
-
-static u8 idedisk_dump_status (ide_drive_t *drive, const char *msg, u8 stat)
-{
- ide_hwif_t *hwif = HWIF(drive);
- unsigned long flags;
- u8 err = 0;
-
- local_irq_set(flags);
- printk("%s: %s: status=0x%02x", drive->name, msg, stat);
-#if FANCY_STATUS_DUMPS
- printk(" { ");
- if (stat & BUSY_STAT)
- printk("Busy ");
- else {
- if (stat & READY_STAT) printk("DriveReady ");
- if (stat & WRERR_STAT) printk("DeviceFault ");
- if (stat & SEEK_STAT) printk("SeekComplete ");
- if (stat & DRQ_STAT) printk("DataRequest ");
- if (stat & ECC_STAT) printk("CorrectedError ");
- if (stat & INDEX_STAT) printk("Index ");
- if (stat & ERR_STAT) printk("Error ");
- }
- printk("}");
-#endif /* FANCY_STATUS_DUMPS */
- printk("\n");
- if ((stat & (BUSY_STAT|ERR_STAT)) == ERR_STAT) {
- err = hwif->INB(IDE_ERROR_REG);
- printk("%s: %s: error=0x%02x", drive->name, msg, err);
-#if FANCY_STATUS_DUMPS
- printk(" { ");
- if (err & ABRT_ERR) printk("DriveStatusError ");
- if (err & ICRC_ERR)
- printk("Bad%s ", (err & ABRT_ERR) ? "CRC" : "Sector");
- if (err & ECC_ERR) printk("UncorrectableError ");
- if (err & ID_ERR) printk("SectorIdNotFound ");
- if (err & TRK0_ERR) printk("TrackZeroNotFound ");
- if (err & MARK_ERR) printk("AddrMarkNotFound ");
- printk("}");
- if ((err & (BBD_ERR | ABRT_ERR)) == BBD_ERR ||
- (err & (ECC_ERR|ID_ERR|MARK_ERR))) {
- if (drive->addressing == 1) {
- __u64 sectors = 0;
- u32 low = 0, high = 0;
- low = ide_read_24(drive);
- hwif->OUTB(drive->ctl|0x80, IDE_CONTROL_REG);
- high = ide_read_24(drive);
- sectors = ((__u64)high << 24) | low;
- printk(", LBAsect=%llu, high=%d, low=%d",
- (unsigned long long) sectors,
- high, low);
- } else {
- u8 cur = hwif->INB(IDE_SELECT_REG);
- if (cur & 0x40) { /* using LBA? */
- printk(", LBAsect=%ld", (unsigned long)
- ((cur&0xf)<<24)
- |(hwif->INB(IDE_HCYL_REG)<<16)
- |(hwif->INB(IDE_LCYL_REG)<<8)
- | hwif->INB(IDE_SECTOR_REG));
- } else {
- printk(", CHS=%d/%d/%d",
- (hwif->INB(IDE_HCYL_REG)<<8) +
- hwif->INB(IDE_LCYL_REG),
- cur & 0xf,
- hwif->INB(IDE_SECTOR_REG));
- }
- }
- if (HWGROUP(drive) && HWGROUP(drive)->rq)
- printk(", sector=%llu",
- (unsigned long long)HWGROUP(drive)->rq->sector);
- }
- }
-#endif /* FANCY_STATUS_DUMPS */
- printk("\n");
- local_irq_restore(flags);
- return err;
-}
-
-ide_startstop_t idedisk_error (ide_drive_t *drive, const char *msg, u8 stat)
-{
- ide_hwif_t *hwif;
- struct request *rq;
- u8 err;
- int i = (drive->mult_count ? drive->mult_count : 1) * SECTOR_WORDS;
-
- err = idedisk_dump_status(drive, msg, stat);
-
- if (drive == NULL || (rq = HWGROUP(drive)->rq) == NULL)
- return ide_stopped;
+ BUG_ON(drive->blocked);
- hwif = HWIF(drive);
- /* retry only "normal" I/O: */
- if (rq->flags & (REQ_DRIVE_CMD | REQ_DRIVE_TASK | REQ_DRIVE_TASKFILE)) {
- rq->errors = 1;
- ide_end_drive_cmd(drive, stat, err);
+ 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;
}
-#ifdef CONFIG_IDE_TASKFILE_IO
- /* make rq completion pointers new submission pointers */
- blk_rq_prep_restart(rq);
-#endif
-
- if (stat & BUSY_STAT || ((stat & WRERR_STAT) && !drive->nowerr)) {
- /* other bits are useless when BUSY */
- rq->errors |= ERROR_RESET;
- } else if (stat & ERR_STAT) {
- /* err has different meaning on cdrom and tape */
- if (err == ABRT_ERR) {
- if (drive->select.b.lba &&
- /* some newer drives don't support WIN_SPECIFY */
- hwif->INB(IDE_COMMAND_REG) == WIN_SPECIFY)
- return ide_stopped;
- } else if ((err & BAD_CRC) == BAD_CRC) {
- /* UDMA crc error, just retry the operation */
- drive->crc_count++;
- } else if (err & (BBD_ERR | ECC_ERR)) {
- /* retries won't help these */
- rq->errors = ERROR_MAX;
- } else if (err & TRK0_ERR) {
- /* help it find track zero */
- rq->errors |= ERROR_RECAL;
- }
- }
- if ((stat & DRQ_STAT) && rq_data_dir(rq) == READ) {
- /*
- * try_to_flush_leftover_data() is invoked in response to
- * a drive unexpectedly having its DRQ_STAT bit set. As
- * an alternative to resetting the drive, this routine
- * tries to clear the condition by read a sector's worth
- * of data from the drive. Of course, this may not help
- * if the drive is *waiting* for data from *us*.
- */
- while (i > 0) {
- u32 buffer[16];
- unsigned int wcount = (i > 16) ? 16 : i;
- i -= wcount;
- taskfile_input_data(drive, buffer, wcount);
- }
- }
- if (hwif->INB(IDE_STATUS_REG) & (BUSY_STAT|DRQ_STAT)) {
- /* force an abort */
- hwif->OUTB(WIN_IDLEIMMEDIATE,IDE_COMMAND_REG);
- }
- if (rq->errors >= ERROR_MAX || blk_noretry_request(rq))
- DRIVER(drive)->end_request(drive, 0, 0);
- else {
- if ((rq->errors & ERROR_RESET) == ERROR_RESET) {
- ++rq->errors;
- return ide_do_reset(drive);
- }
- if ((rq->errors & ERROR_RECAL) == ERROR_RECAL)
- drive->special.b.recalibrate = 1;
- ++rq->errors;
- }
- return ide_stopped;
-}
-
-ide_startstop_t idedisk_abort(ide_drive_t *drive, const char *msg)
-{
- ide_hwif_t *hwif;
- struct request *rq;
-
- if (drive == NULL || (rq = HWGROUP(drive)->rq) == NULL)
- return ide_stopped;
- hwif = HWIF(drive);
+ pr_debug("%s: %sing: block=%llu, sectors=%lu, buffer=0x%08lx\n",
+ drive->name, rq_data_dir(rq) == READ ? "read" : "writ",
+ block, rq->nr_sectors, (unsigned long)rq->buffer);
- if (rq->flags & (REQ_DRIVE_CMD | REQ_DRIVE_TASK | REQ_DRIVE_TASKFILE)) {
- rq->errors = 1;
- ide_end_drive_cmd(drive, BUSY_STAT, 0);
- return ide_stopped;
- }
+ if (hwif->rw_disk)
+ hwif->rw_disk(drive, rq);
- DRIVER(drive)->end_request(drive, 0, 0);
- return ide_stopped;
+ return __ide_do_rw_disk(drive, rq, block);
}
/*
return addr;
}
-#ifdef CONFIG_IDEDISK_STROKE
/*
* Sets maximum virtual LBA address of the drive.
* Returns new maximum virtual LBA address (> 0) or 0 on failure.
return addr_set;
}
-#endif /* CONFIG_IDEDISK_STROKE */
-
static unsigned long long sectors_to_MB(unsigned long long n)
{
n <<= 9; /* make it bytes */
drive->name,
capacity, sectors_to_MB(capacity),
set_max, sectors_to_MB(set_max));
-#ifdef CONFIG_IDEDISK_STROKE
+
if (lba48)
set_max = idedisk_set_max_address_ext(drive, set_max);
else
printk(KERN_INFO "%s: Host Protected Area disabled.\n",
drive->name);
}
-#endif
}
/*
return drive->capacity64 - drive->sect0;
}
+#define IS_PDC4030_DRIVE 0
+
static ide_startstop_t idedisk_special (ide_drive_t *drive)
{
special_t *s = &drive->special;
args.tfRegister[IDE_HCYL_OFFSET] = SMART_HCYL_PASS;
args.tfRegister[IDE_COMMAND_OFFSET] = 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);
args.tfRegister[IDE_HCYL_OFFSET] = SMART_HCYL_PASS;
args.tfRegister[IDE_COMMAND_OFFSET] = 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);
#endif /* CONFIG_PROC_FS */
+static int idedisk_issue_flush(request_queue_t *q, struct gendisk *disk,
+ sector_t *error_sector)
+{
+ ide_drive_t *drive = q->queuedata;
+ struct request *rq;
+ int ret;
+
+ if (!drive->wcache)
+ return 0;
+
+ rq = blk_get_request(q, WRITE, __GFP_WAIT);
+
+ memset(rq->cmd, 0, sizeof(rq->cmd));
+
+ if (ide_id_has_flush_cache_ext(drive->id) &&
+ (drive->capacity64 >= (1UL << 28)))
+ rq->cmd[0] = WIN_FLUSH_CACHE_EXT;
+ else
+ rq->cmd[0] = WIN_FLUSH_CACHE;
+
+
+ rq->flags |= REQ_DRIVE_TASK | REQ_SOFTBARRIER;
+ rq->buffer = rq->cmd;
+
+ ret = blk_execute_rq(q, disk, rq);
+
+ /*
+ * if we failed and caller wants error offset, get it
+ */
+ if (ret && error_sector)
+ *error_sector = ide_get_error_location(drive, rq->cmd);
+
+ blk_put_request(rq);
+ return ret;
+}
+
/*
* This is tightly woven into the driver->do_special can not touch.
* DON'T do it again until a total personality rewrite is committed.
return 0;
}
-static int write_cache (ide_drive_t *drive, int arg)
+static int write_cache(ide_drive_t *drive, int arg)
{
ide_task_t args;
+ int err;
- if (!(drive->id->cfs_enable_2 & 0x3000))
+ if (!ide_id_has_flush_cache(drive->id))
return 1;
memset(&args, 0, sizeof(ide_task_t));
args.tfRegister[IDE_COMMAND_OFFSET] = WIN_SETFEATURES;
args.command_type = IDE_DRIVE_TASK_NO_DATA;
args.handler = &task_no_data_intr;
- (void) ide_raw_taskfile(drive, &args, NULL);
+
+ err = ide_raw_taskfile(drive, &args, NULL);
+ if (err)
+ return err;
drive->wcache = arg;
return 0;
ide_task_t args;
memset(&args, 0, sizeof(ide_task_t));
- if (drive->id->cfs_enable_2 & 0x2400)
+ if (ide_id_has_flush_cache_ext(drive->id))
args.tfRegister[IDE_COMMAND_OFFSET] = WIN_FLUSH_CACHE_EXT;
else
args.tfRegister[IDE_COMMAND_OFFSET] = WIN_FLUSH_CACHE;
return 0;
}
-#ifdef CONFIG_BLK_DEV_IDE_TCQ
-static int set_using_tcq(ide_drive_t *drive, int arg)
-{
- int ret;
-
- if (!drive->driver)
- return -EPERM;
- if (arg == drive->queue_depth && drive->using_tcq)
- return 0;
-
- /*
- * set depth, but check also id for max supported depth
- */
- drive->queue_depth = arg ? arg : 1;
- if (drive->id) {
- if (drive->queue_depth > drive->id->queue_depth + 1)
- drive->queue_depth = drive->id->queue_depth + 1;
- }
-
- if (arg)
- ret = __ide_dma_queued_on(drive);
- else
- ret = __ide_dma_queued_off(drive);
-
- return ret ? -EIO : 0;
-}
-#endif
-
/*
* drive->addressing:
* 0: 28-bit
ide_add_setting(drive, "acoustic", SETTING_RW, HDIO_GET_ACOUSTIC, HDIO_SET_ACOUSTIC, TYPE_BYTE, 0, 254, 1, 1, &drive->acoustic, set_acoustic);
ide_add_setting(drive, "failures", SETTING_RW, -1, -1, TYPE_INT, 0, 65535, 1, 1, &drive->failures, NULL);
ide_add_setting(drive, "max_failures", SETTING_RW, -1, -1, TYPE_INT, 0, 65535, 1, 1, &drive->max_failures, NULL);
-#ifdef CONFIG_BLK_DEV_IDE_TCQ
- ide_add_setting(drive, "using_tcq", SETTING_RW, HDIO_GET_QDMA, HDIO_SET_QDMA, TYPE_BYTE, 0, IDE_MAX_TAG, 1, 1, &drive->using_tcq, set_using_tcq);
-#endif
}
/*
idedisk_pm_flush_cache = ide_pm_state_start_suspend,
idedisk_pm_standby,
- idedisk_pm_restore_dma = ide_pm_state_start_resume,
+ idedisk_pm_idle = ide_pm_state_start_resume,
+ idedisk_pm_restore_dma,
};
static void idedisk_complete_power_step (ide_drive_t *drive, struct request *rq, u8 stat, u8 error)
case idedisk_pm_standby: /* Suspend step 2 (standby) complete */
rq->pm->pm_step = ide_pm_state_completed;
break;
+ case idedisk_pm_idle: /* Resume step 1 (idle) complete */
+ rq->pm->pm_step = idedisk_pm_restore_dma;
+ break;
}
}
switch (rq->pm->pm_step) {
case idedisk_pm_flush_cache: /* Suspend step 1 (flush cache) */
/* Not supported? Switch to next step now. */
- if (!drive->wcache) {
+ if (!drive->wcache || !ide_id_has_flush_cache(drive->id)) {
idedisk_complete_power_step(drive, rq, 0, 0);
return ide_stopped;
}
- if (drive->id->cfs_enable_2 & 0x2400)
+ if (ide_id_has_flush_cache_ext(drive->id))
args->tfRegister[IDE_COMMAND_OFFSET] = WIN_FLUSH_CACHE_EXT;
else
args->tfRegister[IDE_COMMAND_OFFSET] = WIN_FLUSH_CACHE;
args->command_type = IDE_DRIVE_TASK_NO_DATA;
args->handler = &task_no_data_intr;
return do_rw_taskfile(drive, args);
+
case idedisk_pm_standby: /* Suspend step 2 (standby) */
args->tfRegister[IDE_COMMAND_OFFSET] = WIN_STANDBYNOW1;
args->command_type = IDE_DRIVE_TASK_NO_DATA;
args->handler = &task_no_data_intr;
return do_rw_taskfile(drive, args);
- case idedisk_pm_restore_dma: /* Resume step 1 (restore DMA) */
+ case idedisk_pm_idle: /* Resume step 1 (idle) */
+ args->tfRegister[IDE_COMMAND_OFFSET] = WIN_IDLEIMMEDIATE;
+ args->command_type = IDE_DRIVE_TASK_NO_DATA;
+ args->handler = task_no_data_intr;
+ return do_rw_taskfile(drive, args);
+
+ case idedisk_pm_restore_dma: /* Resume step 2 (restore DMA) */
/*
* Right now, all we do is call hwif->ide_dma_check(drive),
* we could be smarter and check for current xfer_speed
{
struct hd_driveid *id = drive->id;
unsigned long long capacity;
+ int barrier;
idedisk_add_settings(drive);
blk_queue_max_sectors(drive->queue, max_s);
}
- printk("%s: max request size: %dKiB\n", drive->name, drive->queue->max_sectors / 2);
+ printk(KERN_INFO "%s: max request size: %dKiB\n", drive->name, drive->queue->max_sectors / 2);
/* Extract geometry if we did not already have one for the drive */
if (!drive->cyl || !drive->head || !drive->sect) {
/* limit drive capacity to 137GB if LBA48 cannot be used */
if (drive->addressing == 0 && drive->capacity64 > 1ULL << 28) {
- printk("%s: cannot use LBA48 - full capacity "
+ 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 (drive->hwif->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;
+ }
+
/*
* if possible, give fdisk access to more of the drive,
* by correcting bios_cyls:
printk(", CHS=%d/%d/%d",
drive->bios_cyl, drive->bios_head, drive->bios_sect);
if (drive->using_dma)
- (void) HWIF(drive)->ide_dma_verbose(drive);
+ ide_dma_verbose(drive);
printk("\n");
drive->mult_count = 0;
#endif /* CONFIG_IDEDISK_MULTI_MODE */
}
drive->no_io_32bit = id->dword_io ? 1 : 0;
- if (drive->id->cfs_enable_2 & 0x3000)
- write_cache(drive, (id->cfs_enable_2 & 0x3000));
-#ifdef CONFIG_BLK_DEV_IDE_TCQ_DEFAULT
- if (drive->using_dma)
- __ide_dma_queued_on(drive);
-#endif
+ /* write cache enabled? */
+ if ((id->csfo & 1) || (id->cfs_enable_1 & (1 << 5)))
+ drive->wcache = 1;
+
+ write_cache(drive, 1);
+
+ /*
+ * 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.
+ */
+ barrier = 0;
+ if (ide_id_has_flush_cache(id))
+ barrier = 1;
+ if (drive->addressing == 1) {
+ /* Can't issue the correct flush ? */
+ if (capacity > (1ULL << 28) && !ide_id_has_flush_cache_ext(id))
+ barrier = 0;
+ }
+
+ printk(KERN_DEBUG "%s: cache flushes %ssupported\n",
+ drive->name, barrier ? "" : "not ");
+ if (barrier) {
+ blk_queue_ordered(drive->queue, 1);
+ blk_queue_issue_flush_fn(drive->queue, idedisk_issue_flush);
+ }
+}
+
+static void ide_cacheflush_p(ide_drive_t *drive)
+{
+ if (!drive->wcache || !ide_id_has_flush_cache(drive->id))
+ return;
+
+ if (do_idedisk_flushcache(drive))
+ printk(KERN_INFO "%s: wcache flush failed!\n", drive->name);
}
static int idedisk_cleanup (ide_drive_t *drive)
{
- static int ide_cacheflush_p(ide_drive_t *drive);
struct gendisk *g = drive->disk;
ide_cacheflush_p(drive);
if (ide_unregister_subdriver(drive))
{
ide_drive_t *drive = container_of(dev, ide_drive_t, gendev);
+#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);
dev->bus->suspend(dev, PM_SUSPEND_STANDBY);
}
.supports_dsc_overlap = 0,
.cleanup = idedisk_cleanup,
.do_request = ide_do_rw_disk,
- .sense = idedisk_dump_status,
- .error = idedisk_error,
- .abort = idedisk_abort,
.pre_reset = idedisk_pre_reset,
.capacity = idedisk_capacity,
.special = idedisk_special,
static int idedisk_open(struct inode *inode, struct file *filp)
{
- u8 cf;
ide_drive_t *drive = inode->i_bdev->bd_disk->private_data;
drive->usage++;
if (drive->removable && drive->usage == 1) {
if (drive->doorlocking && ide_raw_taskfile(drive, &args, NULL))
drive->doorlocking = 0;
}
- drive->wcache = 0;
- /* Cache enabled? */
- if (drive->id->csfo & 1)
- drive->wcache = 1;
- /* Cache command set available? */
- if (drive->id->cfs_enable_1 & (1 << 5))
- drive->wcache = 1;
- /* ATA6 cache extended commands */
- cf = drive->id->command_set_2 >> 24;
- if ((cf & 0xC0) == 0x40 && (cf & 0x30) != 0)
- drive->wcache = 1;
- return 0;
-}
-
-static int ide_cacheflush_p(ide_drive_t *drive)
-{
- if (!(drive->id->cfs_enable_2 & 0x3000))
- return 0;
-
- if(drive->wcache)
- {
- if (do_idedisk_flushcache(drive))
- {
- printk (KERN_INFO "%s: Write Cache FAILED Flushing!\n",
- drive->name);
- return -EIO;
- }
- return 1;
- }
return 0;
}
unsigned int cmd, unsigned long arg)
{
struct block_device *bdev = inode->i_bdev;
- return generic_ide_ioctl(bdev, cmd, arg);
+ return generic_ide_ioctl(file, bdev, cmd, arg);
}
static int idedisk_media_changed(struct gendisk *disk)
static int idedisk_revalidate_disk(struct gendisk *disk)
{
ide_drive_t *drive = disk->private_data;
- set_capacity(disk, current_capacity(drive));
+ set_capacity(disk, idedisk_capacity(drive));
return 0;
}
if ((!drive->head || drive->head > 16) && !drive->select.b.lba) {
printk(KERN_ERR "%s: INVALID GEOMETRY: %d PHYSICAL HEADS?\n",
drive->name, drive->head);
- if ((drive->id->cfs_enable_2 & 0x3000) && drive->wcache)
- if (do_idedisk_flushcache(drive))
- printk (KERN_INFO "%s: Write Cache FAILED Flushing!\n",
- drive->name);
- ide_unregister_subdriver(drive);
- DRIVER(drive)->busy--;
- goto failed;
- }
+ drive->attach = 0;
+ } else
+ drive->attach = 1;
DRIVER(drive)->busy--;
g->minors = 1 << PARTN_BITS;
strcpy(g->devfs_name, drive->devfs_name);
g->driverfs_dev = &drive->gendev;
g->flags = drive->removable ? GENHD_FL_REMOVABLE : 0;
- set_capacity(g, current_capacity(drive));
+ set_capacity(g, idedisk_capacity(drive));
g->fops = &idedisk_ops;
- drive->attach = 1;
add_disk(g);
return 0;
failed:
git://git.onelab.eu / linux-2.6.git / blobdiff