* Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org>
* Copyright (C) 2001-2002 Klaus Smolin
* IBM Storage Technology Division
- * Copyright (C) 2003 Bartlomiej Zolnierkiewicz
+ * Copyright (C) 2003-2004 Bartlomiej Zolnierkiewicz
*
* The big the bad and the ugly.
*
* request.
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/timer.h>
#include <linux/mm.h>
+#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/major.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/hdreg.h>
#include <linux/ide.h>
+#include <linux/bitops.h>
#include <asm/byteorder.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include <asm/io.h>
-#include <asm/bitops.h>
-
-#define DEBUG_TASKFILE 0 /* unset when fixed */
-
-#if DEBUG_TASKFILE
-#define DTF(x...) printk(x)
-#else
-#define DTF(x...)
-#endif
static void ata_bswap_data (void *buffer, int wcount)
{
}
}
-
-void taskfile_input_data (ide_drive_t *drive, void *buffer, u32 wcount)
+static void taskfile_input_data(ide_drive_t *drive, void *buffer, u32 wcount)
{
HWIF(drive)->ata_input_data(drive, buffer, wcount);
if (drive->bswap)
ata_bswap_data(buffer, wcount);
}
-EXPORT_SYMBOL(taskfile_input_data);
-
-void taskfile_output_data (ide_drive_t *drive, void *buffer, u32 wcount)
+static void taskfile_output_data(ide_drive_t *drive, void *buffer, u32 wcount)
{
if (drive->bswap) {
ata_bswap_data(buffer, wcount);
}
}
-EXPORT_SYMBOL(taskfile_output_data);
-
int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf)
{
ide_task_t args;
else
args.tfRegister[IDE_COMMAND_OFFSET] = WIN_PIDENTIFY;
args.command_type = IDE_DRIVE_TASK_IN;
+ args.data_phase = TASKFILE_IN;
args.handler = &task_in_intr;
return ide_raw_taskfile(drive, &args, buf);
}
-EXPORT_SYMBOL(taskfile_lib_get_identify);
-
-#ifdef CONFIG_IDE_TASK_IOCTL_DEBUG
-void debug_taskfile (ide_drive_t *drive, ide_task_t *args)
-{
- printk(KERN_INFO "%s: ", drive->name);
-// printk("TF.0=x%02x ", args->tfRegister[IDE_DATA_OFFSET]);
- printk("TF.1=x%02x ", args->tfRegister[IDE_FEATURE_OFFSET]);
- printk("TF.2=x%02x ", args->tfRegister[IDE_NSECTOR_OFFSET]);
- printk("TF.3=x%02x ", args->tfRegister[IDE_SECTOR_OFFSET]);
- printk("TF.4=x%02x ", args->tfRegister[IDE_LCYL_OFFSET]);
- printk("TF.5=x%02x ", args->tfRegister[IDE_HCYL_OFFSET]);
- printk("TF.6=x%02x ", args->tfRegister[IDE_SELECT_OFFSET]);
- printk("TF.7=x%02x\n", args->tfRegister[IDE_COMMAND_OFFSET]);
- printk(KERN_INFO "%s: ", drive->name);
-// printk("HTF.0=x%02x ", args->hobRegister[IDE_DATA_OFFSET]);
- printk("HTF.1=x%02x ", args->hobRegister[IDE_FEATURE_OFFSET]);
- printk("HTF.2=x%02x ", args->hobRegister[IDE_NSECTOR_OFFSET]);
- printk("HTF.3=x%02x ", args->hobRegister[IDE_SECTOR_OFFSET]);
- printk("HTF.4=x%02x ", args->hobRegister[IDE_LCYL_OFFSET]);
- printk("HTF.5=x%02x ", args->hobRegister[IDE_HCYL_OFFSET]);
- printk("HTF.6=x%02x ", args->hobRegister[IDE_SELECT_OFFSET]);
- printk("HTF.7=x%02x\n", args->hobRegister[IDE_CONTROL_OFFSET_HOB]);
-}
-#endif /* CONFIG_IDE_TASK_IOCTL_DEBUG */
-
ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task)
{
ide_hwif_t *hwif = HWIF(drive);
hob_struct_t *hobfile = (hob_struct_t *) task->hobRegister;
u8 HIHI = (drive->addressing == 1) ? 0xE0 : 0xEF;
-#ifdef CONFIG_IDE_TASK_IOCTL_DEBUG
- void debug_taskfile(drive, task);
-#endif /* CONFIG_IDE_TASK_IOCTL_DEBUG */
-
/* ALL Command Block Executions SHALL clear nIEN, unless otherwise */
if (IDE_CONTROL_REG) {
/* clear nIEN */
hwif->OUTB(taskfile->high_cylinder, IDE_HCYL_REG);
hwif->OUTB((taskfile->device_head & HIHI) | drive->select.all, IDE_SELECT_REG);
-#ifdef CONFIG_IDE_TASKFILE_IO
+
if (task->handler != NULL) {
if (task->prehandler != NULL) {
hwif->OUTBSYNC(drive, taskfile->command, IDE_COMMAND_REG);
ide_execute_command(drive, taskfile->command, task->handler, WAIT_WORSTCASE, NULL);
return ide_started;
}
-#else
- if (task->handler != NULL) {
- ide_execute_command(drive, taskfile->command, task->handler, WAIT_WORSTCASE, NULL);
- if (task->prehandler != NULL)
- return task->prehandler(drive, task->rq);
- return ide_started;
- }
-#endif
if (!drive->using_dma)
return ide_stopped;
case WIN_WRITEDMA_ONCE:
case WIN_WRITEDMA:
case WIN_WRITEDMA_EXT:
- if (!hwif->ide_dma_write(drive))
- return ide_started;
- break;
case WIN_READDMA_ONCE:
case WIN_READDMA:
case WIN_READDMA_EXT:
case WIN_IDENTIFY_DMA:
- if (!hwif->ide_dma_read(drive))
+ if (!hwif->dma_setup(drive)) {
+ hwif->dma_exec_cmd(drive, taskfile->command);
+ hwif->dma_start(drive);
return ide_started;
+ }
break;
default:
if (task->handler == NULL)
return ide_stopped;
}
-EXPORT_SYMBOL(do_rw_taskfile);
-
/*
* set_multmode_intr() is invoked on completion of a WIN_SETMULT cmd.
*/
return ide_stopped;
}
-EXPORT_SYMBOL(set_multmode_intr);
-
/*
* set_geometry_intr() is invoked on completion of a WIN_SPECIFY cmd.
*/
return ide_stopped;
if (stat & (ERR_STAT|DRQ_STAT))
- return DRIVER(drive)->error(drive, "set_geometry_intr", stat);
+ return ide_error(drive, "set_geometry_intr", stat);
- if (HWGROUP(drive)->handler != NULL)
- BUG();
+ BUG_ON(HWGROUP(drive)->handler != NULL);
ide_set_handler(drive, &set_geometry_intr, WAIT_WORSTCASE, NULL);
return ide_started;
}
-EXPORT_SYMBOL(set_geometry_intr);
-
/*
* recal_intr() is invoked on completion of a WIN_RESTORE (recalibrate) cmd.
*/
u8 stat;
if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG), READY_STAT, BAD_STAT))
- return DRIVER(drive)->error(drive, "recal_intr", stat);
+ return ide_error(drive, "recal_intr", stat);
return ide_stopped;
}
-EXPORT_SYMBOL(recal_intr);
-
/*
* Handler for commands without a data phase
*/
ide_hwif_t *hwif = HWIF(drive);
u8 stat;
- local_irq_enable();
+ local_irq_enable_in_hardirq();
if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG),READY_STAT,BAD_STAT)) {
- DTF("%s: command opcode 0x%02x\n", drive->name,
- args->tfRegister[IDE_COMMAND_OFFSET]);
- return DRIVER(drive)->error(drive, "task_no_data_intr", stat);
+ return ide_error(drive, "task_no_data_intr", stat);
/* calls ide_end_drive_cmd */
}
if (args)
EXPORT_SYMBOL(task_no_data_intr);
-/*
- * old taskfile PIO handlers, to be killed as soon as possible.
- */
-#ifndef CONFIG_IDE_TASKFILE_IO
-
-/*
- * Handler for command with PIO data-in phase, READ
- */
-ide_startstop_t task_in_intr (ide_drive_t *drive)
+static u8 wait_drive_not_busy(ide_drive_t *drive)
{
- struct request *rq = HWGROUP(drive)->rq;
- ide_hwif_t *hwif = HWIF(drive);
- char *pBuf = NULL;
+ ide_hwif_t *hwif = HWIF(drive);
+ int retries = 100;
u8 stat;
- 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, "task_in_intr", stat);
- }
- if (!(stat & BUSY_STAT)) {
- DTF("task_in_intr to Soon wait for next interrupt\n");
- if (HWGROUP(drive)->handler == NULL)
- ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
- }
- }
-
- pBuf = rq->buffer + task_rq_offset(rq);
- DTF("Read: %p, rq->current_nr_sectors: %d, stat: %02x\n",
- pBuf, (int) rq->current_nr_sectors, stat);
- taskfile_input_data(drive, pBuf, SECTOR_WORDS);
-
- /* FIXME: check drive status */
- if (--rq->current_nr_sectors <= 0)
- if (!DRIVER(drive)->end_request(drive, 1, 0))
- return ide_stopped;
/*
- * ERM, it is techincally legal to leave/exit here but it makes
- * a mess of the code ...
+ * Last sector was transfered, wait until drive is ready.
+ * This can take up to 10 usec, but we will wait max 1 ms
+ * (drive_cmd_intr() waits that long).
*/
- if (HWGROUP(drive)->handler == NULL)
- ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
-}
+ while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--)
+ udelay(10);
-EXPORT_SYMBOL(task_in_intr);
+ if (!retries)
+ printk(KERN_ERR "%s: drive still BUSY!\n", drive->name);
-/*
- * Handler for command with Read Multiple
- */
-ide_startstop_t task_mulin_intr (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- struct request *rq = HWGROUP(drive)->rq;
- char *pBuf = NULL;
- unsigned int msect = drive->mult_count;
- unsigned int nsect;
- u8 stat;
+ return stat;
+}
- 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, "task_mulin_intr", stat);
- }
- /* no data yet, so wait for another interrupt */
- if (HWGROUP(drive)->handler == NULL)
- ide_set_handler(drive, &task_mulin_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
- }
+static void ide_pio_sector(ide_drive_t *drive, unsigned int write)
+{
+ ide_hwif_t *hwif = drive->hwif;
+ struct scatterlist *sg = hwif->sg_table;
+ struct page *page;
+#ifdef CONFIG_HIGHMEM
+ unsigned long flags;
+#endif
+ unsigned int offset;
+ u8 *buf;
- do {
- nsect = rq->current_nr_sectors;
- if (nsect > msect)
- nsect = msect;
- pBuf = rq->buffer + task_rq_offset(rq);
- DTF("Multiread: %p, nsect: %d, msect: %d, " \
- " rq->current_nr_sectors: %d\n",
- pBuf, nsect, msect, rq->current_nr_sectors);
- taskfile_input_data(drive, pBuf, nsect * SECTOR_WORDS);
- rq->errors = 0;
- rq->current_nr_sectors -= nsect;
- msect -= nsect;
+ page = sg[hwif->cursg].page;
+ offset = sg[hwif->cursg].offset + hwif->cursg_ofs * SECTOR_SIZE;
- /* FIXME: check drive status */
- if (!rq->current_nr_sectors) {
- if (!DRIVER(drive)->end_request(drive, 1, 0))
- return ide_stopped;
- }
- } while (msect);
- if (HWGROUP(drive)->handler == NULL)
- ide_set_handler(drive, &task_mulin_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
-}
+ /* get the current page and offset */
+ page = nth_page(page, (offset >> PAGE_SHIFT));
+ offset %= PAGE_SIZE;
-EXPORT_SYMBOL(task_mulin_intr);
+#ifdef CONFIG_HIGHMEM
+ local_irq_save(flags);
+#endif
+ buf = kmap_atomic(page, KM_BIO_SRC_IRQ) + offset;
-/*
- * VERIFY ME before 2.4 ... unexpected race is possible based on details
- * RMK with 74LS245/373/374 TTL buffer logic because of passthrough.
- */
-ide_startstop_t pre_task_out_intr (ide_drive_t *drive, struct request *rq)
-{
- ide_startstop_t startstop;
+ hwif->nleft--;
+ hwif->cursg_ofs++;
- if (ide_wait_stat(&startstop, drive, DATA_READY,
- drive->bad_wstat, WAIT_DRQ)) {
- printk(KERN_ERR "%s: no DRQ after issuing WRITE%s\n",
- drive->name,
- drive->addressing ? "_EXT" : "");
- return startstop;
+ if ((hwif->cursg_ofs * SECTOR_SIZE) == sg[hwif->cursg].length) {
+ hwif->cursg++;
+ hwif->cursg_ofs = 0;
}
- /* For Write_sectors we need to stuff the first sector */
- taskfile_output_data(drive, rq->buffer + task_rq_offset(rq), SECTOR_WORDS);
- rq->current_nr_sectors--;
- return ide_started;
-}
-EXPORT_SYMBOL(pre_task_out_intr);
+ /* do the actual data transfer */
+ if (write)
+ taskfile_output_data(drive, buf, SECTOR_WORDS);
+ else
+ taskfile_input_data(drive, buf, SECTOR_WORDS);
-/*
- * Handler for command with PIO data-out phase WRITE
- *
- * WOOHOO this is a CORRECT STATE DIAGRAM NOW, <andre@linux-ide.org>
- */
-ide_startstop_t task_out_intr (ide_drive_t *drive)
+ kunmap_atomic(buf, KM_BIO_SRC_IRQ);
+#ifdef CONFIG_HIGHMEM
+ local_irq_restore(flags);
+#endif
+}
+
+static void ide_pio_multi(ide_drive_t *drive, unsigned int write)
{
- ide_hwif_t *hwif = HWIF(drive);
- struct request *rq = HWGROUP(drive)->rq;
- char *pBuf = NULL;
- u8 stat;
+ unsigned int nsect;
- if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG), DRIVE_READY, drive->bad_wstat)) {
- return DRIVER(drive)->error(drive, "task_out_intr", stat);
- }
- /*
- * Safe to update request for partial completions.
- * We have a good STATUS CHECK!!!
- */
- if (!rq->current_nr_sectors)
- if (!DRIVER(drive)->end_request(drive, 1, 0))
- return ide_stopped;
- if ((rq->current_nr_sectors==1) ^ (stat & DRQ_STAT)) {
- rq = HWGROUP(drive)->rq;
- pBuf = rq->buffer + task_rq_offset(rq);
- DTF("write: %p, rq->current_nr_sectors: %d\n",
- pBuf, (int) rq->current_nr_sectors);
- taskfile_output_data(drive, pBuf, SECTOR_WORDS);
- rq->errors = 0;
- rq->current_nr_sectors--;
- }
- if (HWGROUP(drive)->handler == NULL)
- ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
+ nsect = min_t(unsigned int, drive->hwif->nleft, drive->mult_count);
+ while (nsect--)
+ ide_pio_sector(drive, write);
}
-EXPORT_SYMBOL(task_out_intr);
-
-ide_startstop_t pre_task_mulout_intr (ide_drive_t *drive, struct request *rq)
+static void ide_pio_datablock(ide_drive_t *drive, struct request *rq,
+ unsigned int write)
{
- ide_task_t *args = rq->special;
- ide_startstop_t startstop;
+ if (rq->bio) /* fs request */
+ rq->errors = 0;
- 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->addressing ? "MULTWRITE_EXT" : "MULTWRITE");
- return startstop;
- }
- if (!(drive_is_ready(drive))) {
- int i;
- for (i=0; i<100; i++) {
- if (drive_is_ready(drive))
- break;
- }
- }
+ touch_softlockup_watchdog();
- /*
- * WARNING :: if the drive as not acked good status we may not
- * move the DATA-TRANSFER T-Bar as BSY != 0. <andre@linux-ide.org>
- */
- return args->handler(drive);
+ switch (drive->hwif->data_phase) {
+ case TASKFILE_MULTI_IN:
+ case TASKFILE_MULTI_OUT:
+ ide_pio_multi(drive, write);
+ break;
+ default:
+ ide_pio_sector(drive, write);
+ break;
+ }
}
-EXPORT_SYMBOL(pre_task_mulout_intr);
-
-/*
- * Handler for command write multiple
- * Called directly from execute_drive_cmd for the first bunch of sectors,
- * afterwards only by the ISR
- */
-ide_startstop_t task_mulout_intr (ide_drive_t *drive)
+static ide_startstop_t task_error(ide_drive_t *drive, struct request *rq,
+ const char *s, u8 stat)
{
- ide_hwif_t *hwif = HWIF(drive);
- u8 stat = hwif->INB(IDE_STATUS_REG);
- struct request *rq = HWGROUP(drive)->rq;
- char *pBuf = NULL;
- unsigned int msect = drive->mult_count;
- unsigned int nsect;
+ if (rq->bio) {
+ ide_hwif_t *hwif = drive->hwif;
+ int sectors = hwif->nsect - hwif->nleft;
- if (!OK_STAT(stat, DATA_READY, BAD_R_STAT) || !rq->current_nr_sectors) {
- if (stat & (ERR_STAT|DRQ_STAT)) {
- return DRIVER(drive)->error(drive, "task_mulout_intr", stat);
- }
- /* Handle last IRQ, occurs after all data was sent. */
- if (!rq->current_nr_sectors) {
- DRIVER(drive)->end_request(drive, 1, 0);
- return ide_stopped;
+ switch (hwif->data_phase) {
+ case TASKFILE_IN:
+ if (hwif->nleft)
+ break;
+ /* fall through */
+ case TASKFILE_OUT:
+ sectors--;
+ break;
+ case TASKFILE_MULTI_IN:
+ if (hwif->nleft)
+ break;
+ /* fall through */
+ case TASKFILE_MULTI_OUT:
+ sectors -= drive->mult_count;
+ default:
+ break;
}
- /* no data yet, so wait for another interrupt */
- if (HWGROUP(drive)->handler == NULL)
- ide_set_handler(drive, &task_mulout_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
- }
- if (HWGROUP(drive)->handler != NULL) {
- unsigned long lflags;
- spin_lock_irqsave(&ide_lock, lflags);
- HWGROUP(drive)->handler = NULL;
- del_timer(&HWGROUP(drive)->timer);
- spin_unlock_irqrestore(&ide_lock, lflags);
- }
+ if (sectors > 0) {
+ ide_driver_t *drv;
- do {
- nsect = rq->current_nr_sectors;
- if (nsect > msect)
- nsect = msect;
- pBuf = rq->buffer + task_rq_offset(rq);
- DTF("Multiwrite: %p, nsect: %d, msect: %d, " \
- "rq->current_nr_sectors: %ld\n",
- pBuf, nsect, msect, rq->current_nr_sectors);
- msect -= nsect;
- taskfile_output_data(drive, pBuf, nsect * SECTOR_WORDS);
- rq->current_nr_sectors -= nsect;
-
- /* FIXME: check drive status */
- if (!rq->current_nr_sectors) {
- if (!DRIVER(drive)->end_request(drive, 1, 0))
- if (!rq->bio)
- return ide_stopped;
+ drv = *(ide_driver_t **)rq->rq_disk->private_data;
+ drv->end_request(drive, 1, sectors);
}
- } while (msect);
- rq->errors = 0;
- if (HWGROUP(drive)->handler == NULL)
- ide_set_handler(drive, &task_mulout_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
+ }
+ return ide_error(drive, s, stat);
}
-EXPORT_SYMBOL(task_mulout_intr);
-
-#else /* !CONFIG_IDE_TASKFILE_IO */
-
-static u8 wait_drive_not_busy(ide_drive_t *drive)
+static void task_end_request(ide_drive_t *drive, struct request *rq, u8 stat)
{
- ide_hwif_t *hwif = HWIF(drive);
- int retries = 100;
- u8 stat;
+ if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
+ ide_task_t *task = rq->special;
- /*
- * Last sector was transfered, wait until drive is ready.
- * This can take up to 10 usec, but we will wait max 1 ms
- * (drive_cmd_intr() waits that long).
- */
- while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--)
- udelay(10);
+ if (task->tf_out_flags.all) {
+ u8 err = drive->hwif->INB(IDE_ERROR_REG);
+ ide_end_drive_cmd(drive, stat, err);
+ return;
+ }
+ }
- if (!retries)
- printk(KERN_ERR "%s: drive still BUSY!\n", drive->name);
+ if (rq->rq_disk) {
+ ide_driver_t *drv;
- return stat;
+ drv = *(ide_driver_t **)rq->rq_disk->private_data;;
+ drv->end_request(drive, 1, rq->hard_nr_sectors);
+ } else
+ ide_end_request(drive, 1, rq->hard_nr_sectors);
}
/*
- * Handler for command with PIO data-in phase (Read).
+ * Handler for command with PIO data-in phase (Read/Read Multiple).
*/
ide_startstop_t task_in_intr (ide_drive_t *drive)
{
+ ide_hwif_t *hwif = drive->hwif;
struct request *rq = HWGROUP(drive)->rq;
- u8 stat, good_stat;
+ u8 stat = hwif->INB(IDE_STATUS_REG);
- good_stat = DATA_READY;
- stat = HWIF(drive)->INB(IDE_STATUS_REG);
-check_status:
- if (!OK_STAT(stat, good_stat, BAD_R_STAT)) {
+ /* new way for dealing with premature shared PCI interrupts */
+ if (!OK_STAT(stat, DATA_READY, BAD_R_STAT)) {
if (stat & (ERR_STAT | DRQ_STAT))
- return DRIVER(drive)->error(drive, __FUNCTION__, stat);
- /* BUSY_STAT: No data yet, so wait for another IRQ. */
+ return task_error(drive, rq, __FUNCTION__, stat);
+ /* No data yet, so wait for another IRQ. */
ide_set_handler(drive, &task_in_intr, WAIT_WORSTCASE, NULL);
return ide_started;
}
- /*
- * Complete previously submitted bios (if any).
- * Status was already verifyied.
- */
- while (rq->bio != rq->cbio)
- if (!DRIVER(drive)->end_request(drive, 1, bio_sectors(rq->bio)))
- return ide_stopped;
- /* Complete rq->buffer based request (ioctls). */
- if (!rq->bio && !rq->nr_sectors) {
- ide_end_drive_cmd(drive, stat, HWIF(drive)->INB(IDE_ERROR_REG));
- return ide_stopped;
- }
-
- rq->errors = 0;
- task_sectors(drive, rq, 1, IDE_PIO_IN);
+ ide_pio_datablock(drive, rq, 0);
/* If it was the last datablock check status and finish transfer. */
- if (!rq->nr_sectors) {
- good_stat = 0;
+ if (!hwif->nleft) {
stat = wait_drive_not_busy(drive);
- goto check_status;
+ if (!OK_STAT(stat, 0, BAD_R_STAT))
+ return task_error(drive, rq, __FUNCTION__, stat);
+ task_end_request(drive, rq, stat);
+ return ide_stopped;
}
/* Still data left to transfer. */
EXPORT_SYMBOL(task_in_intr);
/*
- * Handler for command with PIO data-in phase (Read Multiple).
- */
-ide_startstop_t task_mulin_intr (ide_drive_t *drive)
-{
- struct request *rq = HWGROUP(drive)->rq;
- unsigned int msect = drive->mult_count;
- unsigned int nsect;
- u8 stat, good_stat;
-
- good_stat = DATA_READY;
- stat = HWIF(drive)->INB(IDE_STATUS_REG);
-check_status:
- if (!OK_STAT(stat, good_stat, BAD_R_STAT)) {
- if (stat & (ERR_STAT | DRQ_STAT))
- return DRIVER(drive)->error(drive, __FUNCTION__, stat);
- /* BUSY_STAT: No data yet, so wait for another IRQ. */
- ide_set_handler(drive, &task_mulin_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
- }
-
- /*
- * Complete previously submitted bios (if any).
- * Status was already verifyied.
- */
- while (rq->bio != rq->cbio)
- if (!DRIVER(drive)->end_request(drive, 1, bio_sectors(rq->bio)))
- return ide_stopped;
- /* Complete rq->buffer based request (ioctls). */
- if (!rq->bio && !rq->nr_sectors) {
- ide_end_drive_cmd(drive, stat, HWIF(drive)->INB(IDE_ERROR_REG));
- return ide_stopped;
- }
-
- rq->errors = 0;
- do {
- nsect = rq->current_nr_sectors;
- if (nsect > msect)
- nsect = msect;
-
- task_sectors(drive, rq, nsect, IDE_PIO_IN);
-
- if (!rq->nr_sectors)
- msect = 0;
- else
- msect -= nsect;
- } while (msect);
-
- /* If it was the last datablock check status and finish transfer. */
- if (!rq->nr_sectors) {
- good_stat = 0;
- stat = wait_drive_not_busy(drive);
- goto check_status;
- }
-
- /* Still data left to transfer. */
- ide_set_handler(drive, &task_mulin_intr, WAIT_WORSTCASE, NULL);
-
- return ide_started;
-}
-EXPORT_SYMBOL(task_mulin_intr);
-
-/*
- * Handler for command with PIO data-out phase (Write).
+ * Handler for command with PIO data-out phase (Write/Write Multiple).
*/
-ide_startstop_t task_out_intr (ide_drive_t *drive)
+static ide_startstop_t task_out_intr (ide_drive_t *drive)
{
+ ide_hwif_t *hwif = drive->hwif;
struct request *rq = HWGROUP(drive)->rq;
- u8 stat;
+ u8 stat = hwif->INB(IDE_STATUS_REG);
- stat = HWIF(drive)->INB(IDE_STATUS_REG);
- if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) {
- if ((stat & (ERR_STAT | DRQ_STAT)) ||
- ((stat & WRERR_STAT) && !drive->nowerr))
- return DRIVER(drive)->error(drive, __FUNCTION__, stat);
- if (stat & BUSY_STAT) {
- /* Not ready yet, so wait for another IRQ. */
- ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
- }
- }
+ if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
+ return task_error(drive, rq, __FUNCTION__, stat);
/* Deal with unexpected ATA data phase. */
- if ((!(stat & DATA_READY) && rq->nr_sectors) ||
- ((stat & DATA_READY) && !rq->nr_sectors))
- return DRIVER(drive)->error(drive, __FUNCTION__, stat);
+ if (((stat & DRQ_STAT) == 0) ^ !hwif->nleft)
+ return task_error(drive, rq, __FUNCTION__, stat);
- /*
- * Complete previously submitted bios (if any).
- * Status was already verifyied.
- */
- while (rq->bio != rq->cbio)
- if (!DRIVER(drive)->end_request(drive, 1, bio_sectors(rq->bio)))
- return ide_stopped;
- /* Complete rq->buffer based request (ioctls). */
- if (!rq->bio && !rq->nr_sectors) {
- ide_end_drive_cmd(drive, stat, HWIF(drive)->INB(IDE_ERROR_REG));
+ if (!hwif->nleft) {
+ task_end_request(drive, rq, stat);
return ide_stopped;
}
/* Still data left to transfer. */
+ ide_pio_datablock(drive, rq, 1);
ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
- rq->errors = 0;
- task_sectors(drive, rq, 1, IDE_PIO_OUT);
-
return ide_started;
}
-EXPORT_SYMBOL(task_out_intr);
-
ide_startstop_t pre_task_out_intr (ide_drive_t *drive, struct request *rq)
{
ide_startstop_t startstop;
if (ide_wait_stat(&startstop, drive, DATA_READY,
drive->bad_wstat, WAIT_DRQ)) {
- printk(KERN_ERR "%s: no DRQ after issuing WRITE%s\n",
- drive->name, drive->addressing ? "_EXT" : "");
+ printk(KERN_ERR "%s: no DRQ after issuing %sWRITE%s\n",
+ drive->name,
+ drive->hwif->data_phase ? "MULT" : "",
+ drive->addressing ? "_EXT" : "");
return startstop;
}
if (!drive->unmask)
local_irq_disable();
- return task_out_intr(drive);
-}
-EXPORT_SYMBOL(pre_task_out_intr);
-
-/*
- * Handler for command with PIO data-out phase (Write Multiple).
- */
-ide_startstop_t task_mulout_intr (ide_drive_t *drive)
-{
- struct request *rq = HWGROUP(drive)->rq;
- unsigned int msect = drive->mult_count;
- unsigned int nsect;
- u8 stat;
-
- stat = HWIF(drive)->INB(IDE_STATUS_REG);
- if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat)) {
- if ((stat & (ERR_STAT | DRQ_STAT)) ||
- ((stat & WRERR_STAT) && !drive->nowerr))
- return DRIVER(drive)->error(drive, __FUNCTION__, stat);
- if (stat & BUSY_STAT) {
- /* Not ready yet, so wait for another IRQ. */
- ide_set_handler(drive, &task_mulout_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
- }
- }
-
- /* Deal with unexpected ATA data phase. */
- if ((!(stat & DATA_READY) && rq->nr_sectors) ||
- ((stat & DATA_READY) && !rq->nr_sectors))
- return DRIVER(drive)->error(drive, __FUNCTION__, stat);
-
- /*
- * Complete previously submitted bios (if any).
- * Status was already verifyied.
- */
- while (rq->bio != rq->cbio)
- if (!DRIVER(drive)->end_request(drive, 1, bio_sectors(rq->bio)))
- return ide_stopped;
- /* Complete rq->buffer based request (ioctls). */
- if (!rq->bio && !rq->nr_sectors) {
- ide_end_drive_cmd(drive, stat, HWIF(drive)->INB(IDE_ERROR_REG));
- return ide_stopped;
- }
-
- /* Still data left to transfer. */
- ide_set_handler(drive, &task_mulout_intr, WAIT_WORSTCASE, NULL);
-
- rq->errors = 0;
- do {
- nsect = rq->current_nr_sectors;
- if (nsect > msect)
- nsect = msect;
-
- task_sectors(drive, rq, nsect, IDE_PIO_OUT);
-
- if (!rq->nr_sectors)
- msect = 0;
- else
- msect -= nsect;
- } while (msect);
+ ide_set_handler(drive, &task_out_intr, WAIT_WORSTCASE, NULL);
+ ide_pio_datablock(drive, rq, 1);
return ide_started;
}
-EXPORT_SYMBOL(task_mulout_intr);
-
-ide_startstop_t pre_task_mulout_intr (ide_drive_t *drive, struct request *rq)
-{
- ide_startstop_t startstop;
-
- if (ide_wait_stat(&startstop, drive, DATA_READY,
- drive->bad_wstat, WAIT_DRQ)) {
- printk(KERN_ERR "%s: no DRQ after issuing MULTWRITE%s\n",
- drive->name, drive->addressing ? "_EXT" : "");
- return startstop;
- }
-
- if (!drive->unmask)
- local_irq_disable();
-
- return task_mulout_intr(drive);
-}
-EXPORT_SYMBOL(pre_task_mulout_intr);
-
-#endif /* !CONFIG_IDE_TASKFILE_IO */
+EXPORT_SYMBOL(pre_task_out_intr);
-int ide_diag_taskfile (ide_drive_t *drive, ide_task_t *args, unsigned long data_size, u8 *buf)
+static int ide_diag_taskfile(ide_drive_t *drive, ide_task_t *args, unsigned long data_size, u8 *buf)
{
struct request rq;
memset(&rq, 0, sizeof(rq));
- rq.flags = REQ_DRIVE_TASKFILE;
+ rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
rq.buffer = buf;
/*
rq.hard_nr_sectors = rq.nr_sectors;
rq.hard_cur_sectors = rq.current_nr_sectors = rq.nr_sectors;
+
+ if (args->command_type == IDE_DRIVE_TASK_RAW_WRITE)
+ rq.cmd_flags |= REQ_RW;
}
rq.special = args;
+ args->rq = &rq;
return ide_do_drive_cmd(drive, &rq, ide_wait);
}
-EXPORT_SYMBOL(ide_diag_taskfile);
-
int ide_raw_taskfile (ide_drive_t *drive, ide_task_t *args, u8 *buf)
{
return ide_diag_taskfile(drive, args, 0, buf);
EXPORT_SYMBOL(ide_raw_taskfile);
-#define MAX_DMA (256*SECTOR_WORDS)
-
-ide_startstop_t flagged_taskfile(ide_drive_t *, ide_task_t *);
-ide_startstop_t flagged_task_no_data_intr(ide_drive_t *);
-ide_startstop_t flagged_task_in_intr(ide_drive_t *);
-ide_startstop_t flagged_task_mulin_intr(ide_drive_t *);
-ide_startstop_t flagged_pre_task_out_intr(ide_drive_t *, struct request *);
-ide_startstop_t flagged_task_out_intr(ide_drive_t *);
-ide_startstop_t flagged_pre_task_mulout_intr(ide_drive_t *, struct request *);
-ide_startstop_t flagged_task_mulout_intr(ide_drive_t *);
-
int ide_taskfile_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
{
ide_task_request_t *req_task;
task_ioreg_t *hobsptr = args.hobRegister;
int err = 0;
int tasksize = sizeof(struct ide_task_request_s);
- int taskin = 0;
- int taskout = 0;
+ unsigned int taskin = 0;
+ unsigned int taskout = 0;
u8 io_32bit = drive->io_32bit;
char __user *buf = (char __user *)arg;
// printk("IDE Taskfile ...\n");
- req_task = kmalloc(tasksize, GFP_KERNEL);
+ req_task = kzalloc(tasksize, GFP_KERNEL);
if (req_task == NULL) return -ENOMEM;
- memset(req_task, 0, tasksize);
if (copy_from_user(req_task, buf, tasksize)) {
kfree(req_task);
return -EFAULT;
}
- taskout = (int) req_task->out_size;
- taskin = (int) req_task->in_size;
+ taskout = req_task->out_size;
+ taskin = req_task->in_size;
+
+ if (taskin > 65536 || taskout > 65536) {
+ err = -EINVAL;
+ goto abort;
+ }
if (taskout) {
int outtotal = tasksize;
- outbuf = kmalloc(taskout, GFP_KERNEL);
+ outbuf = kzalloc(taskout, GFP_KERNEL);
if (outbuf == NULL) {
err = -ENOMEM;
goto abort;
}
- memset(outbuf, 0, taskout);
if (copy_from_user(outbuf, buf + outtotal, taskout)) {
err = -EFAULT;
goto abort;
if (taskin) {
int intotal = tasksize + taskout;
- inbuf = kmalloc(taskin, GFP_KERNEL);
+ inbuf = kzalloc(taskin, GFP_KERNEL);
if (inbuf == NULL) {
err = -ENOMEM;
goto abort;
}
- memset(inbuf, 0, taskin);
if (copy_from_user(inbuf, buf + intotal, taskin)) {
err = -EFAULT;
goto abort;
case TASKFILE_IN_DMA:
err = ide_diag_taskfile(drive, &args, taskin, inbuf);
break;
- case TASKFILE_IN_OUT:
-#if 0
- args.prehandler = &pre_task_out_intr;
- args.handler = &task_out_intr;
- err = ide_diag_taskfile(drive, &args, taskout, outbuf);
- args.prehandler = NULL;
- args.handler = &task_in_intr;
- err = ide_diag_taskfile(drive, &args, taskin, inbuf);
- break;
-#else
- err = -EFAULT;
- goto abort;
-#endif
case TASKFILE_MULTI_OUT:
if (!drive->mult_count) {
/* (hs): give up if multcount is not set */
err = -EPERM;
goto abort;
}
- if (args.tf_out_flags.all != 0) {
- args.prehandler = &flagged_pre_task_mulout_intr;
- args.handler = &flagged_task_mulout_intr;
- } else {
- args.prehandler = &pre_task_mulout_intr;
- args.handler = &task_mulout_intr;
- }
- err = ide_diag_taskfile(drive, &args, taskout, outbuf);
- break;
+ /* fall through */
case TASKFILE_OUT:
- if (args.tf_out_flags.all != 0) {
- args.prehandler = &flagged_pre_task_out_intr;
- args.handler = &flagged_task_out_intr;
- } else {
- args.prehandler = &pre_task_out_intr;
- args.handler = &task_out_intr;
- }
+ args.prehandler = &pre_task_out_intr;
+ args.handler = &task_out_intr;
err = ide_diag_taskfile(drive, &args, taskout, outbuf);
break;
case TASKFILE_MULTI_IN:
err = -EPERM;
goto abort;
}
- if (args.tf_out_flags.all != 0) {
- args.handler = &flagged_task_mulin_intr;
- } else {
- args.handler = &task_mulin_intr;
- }
- err = ide_diag_taskfile(drive, &args, taskin, inbuf);
- break;
+ /* fall through */
case TASKFILE_IN:
- if (args.tf_out_flags.all != 0) {
- args.handler = &flagged_task_in_intr;
- } else {
- args.handler = &task_in_intr;
- }
+ args.handler = &task_in_intr;
err = ide_diag_taskfile(drive, &args, taskin, inbuf);
break;
case TASKFILE_NO_DATA:
- if (args.tf_out_flags.all != 0) {
- args.handler = &flagged_task_no_data_intr;
- } else {
- args.handler = &task_no_data_intr;
- }
+ args.handler = &task_no_data_intr;
err = ide_diag_taskfile(drive, &args, 0, NULL);
break;
default:
}
abort:
kfree(req_task);
- if (outbuf != NULL)
- kfree(outbuf);
- if (inbuf != NULL)
- kfree(inbuf);
+ kfree(outbuf);
+ kfree(inbuf);
// printk("IDE Taskfile ioctl ended. rc = %i\n", err);
return err;
}
-EXPORT_SYMBOL(ide_taskfile_ioctl);
-
int ide_wait_cmd (ide_drive_t *drive, u8 cmd, u8 nsect, u8 feature, u8 sectors, u8 *buf)
{
struct request rq;
return ide_do_drive_cmd(drive, &rq, ide_wait);
}
-EXPORT_SYMBOL(ide_wait_cmd);
-
/*
* FIXME : this needs to map into at taskfile. <andre@linux-ide.org>
*/
if (args[3]) {
argsize = 4 + (SECTOR_WORDS * 4 * args[3]);
- argbuf = kmalloc(argsize, GFP_KERNEL);
+ argbuf = kzalloc(argsize, GFP_KERNEL);
if (argbuf == NULL)
return -ENOMEM;
- memcpy(argbuf, args, 4);
}
if (set_transfer(drive, &tfargs)) {
xfer_rate = args[1];
return err;
}
-EXPORT_SYMBOL(ide_cmd_ioctl);
-
-int ide_wait_cmd_task (ide_drive_t *drive, u8 *buf)
+static int ide_wait_cmd_task(ide_drive_t *drive, u8 *buf)
{
struct request rq;
ide_init_drive_cmd(&rq);
- rq.flags = REQ_DRIVE_TASK;
+ rq.cmd_type = REQ_TYPE_ATA_TASK;
rq.buffer = buf;
return ide_do_drive_cmd(drive, &rq, ide_wait);
}
-EXPORT_SYMBOL(ide_wait_cmd_task);
-
/*
* FIXME : this needs to map into at taskfile. <andre@linux-ide.org>
*/
return err;
}
-EXPORT_SYMBOL(ide_task_ioctl);
-
/*
* NOTICE: This is additions from IBM to provide a discrete interface,
* for selective taskregister access operations. Nice JOB Klaus!!!
ide_hwif_t *hwif = HWIF(drive);
task_struct_t *taskfile = (task_struct_t *) task->tfRegister;
hob_struct_t *hobfile = (hob_struct_t *) task->hobRegister;
-#if DEBUG_TASKFILE
- u8 status;
-#endif
-
-#ifdef CONFIG_IDE_TASK_IOCTL_DEBUG
- void debug_taskfile(drive, task);
-#endif /* CONFIG_IDE_TASK_IOCTL_DEBUG */
+ if (task->data_phase == TASKFILE_MULTI_IN ||
+ task->data_phase == TASKFILE_MULTI_OUT) {
+ if (!drive->mult_count) {
+ printk(KERN_ERR "%s: multimode not set!\n", drive->name);
+ return ide_stopped;
+ }
+ }
/*
- * (ks) Check taskfile in/out flags.
+ * (ks) Check taskfile in flags.
* If set, then execute as it is defined.
* If not set, then define default settings.
* The default values are:
- * write and read all taskfile registers (except data)
- * write and read the hob registers (sector,nsector,lcyl,hcyl)
+ * read all taskfile registers (except data)
+ * read the hob registers (sector, nsector, lcyl, hcyl)
*/
- if (task->tf_out_flags.all == 0) {
- task->tf_out_flags.all = IDE_TASKFILE_STD_OUT_FLAGS;
- if (drive->addressing == 1)
- task->tf_out_flags.all |= (IDE_HOB_STD_OUT_FLAGS << 8);
- }
-
if (task->tf_in_flags.all == 0) {
task->tf_in_flags.all = IDE_TASKFILE_STD_IN_FLAGS;
if (drive->addressing == 1)
hwif->OUTB(drive->ctl, IDE_CONTROL_REG);
SELECT_MASK(drive, 0);
-#if DEBUG_TASKFILE
- status = hwif->INB(IDE_STATUS_REG);
- if (status & 0x80) {
- printk("flagged_taskfile -> Bad status. Status = %02x. wait 100 usec ...\n", status);
- udelay(100);
- status = hwif->INB(IDE_STATUS_REG);
- printk("flagged_taskfile -> Status = %02x\n", status);
- }
-#endif
-
if (task->tf_out_flags.b.data) {
u16 data = taskfile->data + (hobfile->data << 8);
hwif->OUTW(data, IDE_DATA_REG);
hwif->OUTB(taskfile->high_cylinder, IDE_HCYL_REG);
/*
- * (ks) In the flagged taskfile approch, we will used all specified
- * registers and the register value will not be changed. Except the
+ * (ks) In the flagged taskfile approch, we will use all specified
+ * registers and the register value will not be changed, except the
* select bit (master/slave) in the drive_head register. We must make
* sure that the desired drive is selected.
*/
case TASKFILE_OUT_DMAQ:
case TASKFILE_OUT_DMA:
- hwif->ide_dma_write(drive);
- break;
-
case TASKFILE_IN_DMAQ:
case TASKFILE_IN_DMA:
- hwif->ide_dma_read(drive);
+ hwif->dma_setup(drive);
+ hwif->dma_exec_cmd(drive, taskfile->command);
+ hwif->dma_start(drive);
break;
default:
return ide_stopped;
/* Issue the command */
+ if (task->prehandler) {
+ hwif->OUTBSYNC(drive, taskfile->command, IDE_COMMAND_REG);
+ ndelay(400); /* FIXME */
+ return task->prehandler(drive, task->rq);
+ }
ide_execute_command(drive, taskfile->command, task->handler, WAIT_WORSTCASE, NULL);
- if (task->prehandler != NULL)
- return task->prehandler(drive, HWGROUP(drive)->rq);
}
return ide_started;
}
-
-EXPORT_SYMBOL(flagged_taskfile);
-
-ide_startstop_t flagged_task_no_data_intr (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- u8 stat;
-
- local_irq_enable();
-
- if (!OK_STAT(stat = hwif->INB(IDE_STATUS_REG), READY_STAT, BAD_STAT)) {
- if (stat & ERR_STAT) {
- return DRIVER(drive)->error(drive, "flagged_task_no_data_intr", stat);
- }
- /*
- * (ks) Unexpected ATA data phase detected.
- * This should not happen. But, it can !
- * I am not sure, which function is best to clean up
- * this situation. I choose: ide_error(...)
- */
- return DRIVER(drive)->error(drive, "flagged_task_no_data_intr (unexpected phase)", stat);
- }
-
- ide_end_drive_cmd(drive, stat, hwif->INB(IDE_ERROR_REG));
-
- return ide_stopped;
-}
-
-/*
- * Handler for command with PIO data-in phase
- */
-ide_startstop_t flagged_task_in_intr (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- u8 stat = hwif->INB(IDE_STATUS_REG);
- struct request *rq = HWGROUP(drive)->rq;
- char *pBuf = NULL;
- int retries = 5;
-
- if (!OK_STAT(stat, DATA_READY, BAD_R_STAT)) {
- if (stat & ERR_STAT) {
- return DRIVER(drive)->error(drive, "flagged_task_in_intr", stat);
- }
- /*
- * (ks) Unexpected ATA data phase detected.
- * This should not happen. But, it can !
- * I am not sure, which function is best to clean up
- * this situation. I choose: ide_error(...)
- */
- return DRIVER(drive)->error(drive, "flagged_task_in_intr (unexpected data phase)", stat);
- }
-
- pBuf = rq->buffer + ((rq->nr_sectors - rq->current_nr_sectors) * SECTOR_SIZE);
- DTF("Read - rq->current_nr_sectors: %d, status: %02x\n", (int) rq->current_nr_sectors, stat);
-
- taskfile_input_data(drive, pBuf, SECTOR_WORDS);
-
- if (--rq->current_nr_sectors != 0) {
- /*
- * (ks) We don't know which command was executed.
- * So, we wait the 'WORSTCASE' value.
- */
- ide_set_handler(drive, &flagged_task_in_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
- }
- /*
- * (ks) Last sector was transfered, wait until drive is ready.
- * This can take up to 10 usec. We willl wait max 50 us.
- */
- while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--)
- udelay(10);
- ide_end_drive_cmd (drive, stat, hwif->INB(IDE_ERROR_REG));
-
- return ide_stopped;
-}
-
-ide_startstop_t flagged_task_mulin_intr (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- u8 stat = hwif->INB(IDE_STATUS_REG);
- struct request *rq = HWGROUP(drive)->rq;
- char *pBuf = NULL;
- int retries = 5;
- unsigned int msect, nsect;
-
- msect = drive->mult_count;
- if (msect == 0)
- return DRIVER(drive)->error(drive, "flagged_task_mulin_intr (multimode not set)", stat);
-
- if (!OK_STAT(stat, DATA_READY, BAD_R_STAT)) {
- if (stat & ERR_STAT) {
- return DRIVER(drive)->error(drive, "flagged_task_mulin_intr", stat);
- }
- /*
- * (ks) Unexpected ATA data phase detected.
- * This should not happen. But, it can !
- * I am not sure, which function is best to clean up
- * this situation. I choose: ide_error(...)
- */
- return DRIVER(drive)->error(drive, "flagged_task_mulin_intr (unexpected data phase)", stat);
- }
-
- nsect = (rq->current_nr_sectors > msect) ? msect : rq->current_nr_sectors;
- pBuf = rq->buffer + ((rq->nr_sectors - rq->current_nr_sectors) * SECTOR_SIZE);
-
- DTF("Multiread: %p, nsect: %d , rq->current_nr_sectors: %ld\n",
- pBuf, nsect, rq->current_nr_sectors);
-
- taskfile_input_data(drive, pBuf, nsect * SECTOR_WORDS);
-
- rq->current_nr_sectors -= nsect;
- if (rq->current_nr_sectors != 0) {
- /*
- * (ks) We don't know which command was executed.
- * So, we wait the 'WORSTCASE' value.
- */
- ide_set_handler(drive, &flagged_task_mulin_intr, WAIT_WORSTCASE, NULL);
- return ide_started;
- }
-
- /*
- * (ks) Last sector was transfered, wait until drive is ready.
- * This can take up to 10 usec. We willl wait max 50 us.
- */
- while (((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) && retries--)
- udelay(10);
- ide_end_drive_cmd (drive, stat, hwif->INB(IDE_ERROR_REG));
-
- return ide_stopped;
-}
-
-/*
- * Pre handler for command with PIO data-out phase
- */
-ide_startstop_t flagged_pre_task_out_intr (ide_drive_t *drive, struct request *rq)
-{
- ide_startstop_t startstop;
-
- if (ide_wait_stat(&startstop, drive, DATA_READY,
- BAD_W_STAT, WAIT_DRQ)) {
- printk(KERN_ERR "%s: No DRQ bit after issuing write command.\n", drive->name);
- return startstop;
- }
-
- taskfile_output_data(drive, rq->buffer, SECTOR_WORDS);
- --rq->current_nr_sectors;
-
- return ide_started;
-}
-
-ide_startstop_t flagged_task_out_intr (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- u8 stat = hwif->INB(IDE_STATUS_REG);
- struct request *rq = HWGROUP(drive)->rq;
- char *pBuf = NULL;
-
- if (!OK_STAT(stat, DRIVE_READY, BAD_W_STAT))
- return DRIVER(drive)->error(drive, "flagged_task_out_intr", stat);
-
- if (!rq->current_nr_sectors) {
- ide_end_drive_cmd (drive, stat, hwif->INB(IDE_ERROR_REG));
- return ide_stopped;
- }
-
- if (!OK_STAT(stat, DATA_READY, BAD_W_STAT)) {
- /*
- * (ks) Unexpected ATA data phase detected.
- * This should not happen. But, it can !
- * I am not sure, which function is best to clean up
- * this situation. I choose: ide_error(...)
- */
- return DRIVER(drive)->error(drive, "flagged_task_out_intr (unexpected data phase)", stat);
- }
-
- pBuf = rq->buffer + ((rq->nr_sectors - rq->current_nr_sectors) * SECTOR_SIZE);
- DTF("Write - rq->current_nr_sectors: %d, status: %02x\n",
- (int) rq->current_nr_sectors, stat);
-
- taskfile_output_data(drive, pBuf, SECTOR_WORDS);
- --rq->current_nr_sectors;
-
- /*
- * (ks) We don't know which command was executed.
- * So, we wait the 'WORSTCASE' value.
- */
- ide_set_handler(drive, &flagged_task_out_intr, WAIT_WORSTCASE, NULL);
-
- return ide_started;
-}
-
-ide_startstop_t flagged_pre_task_mulout_intr (ide_drive_t *drive, struct request *rq)
-{
- ide_hwif_t *hwif = HWIF(drive);
- u8 stat = hwif->INB(IDE_STATUS_REG);
- char *pBuf = NULL;
- ide_startstop_t startstop;
- unsigned int msect, nsect;
-
- msect = drive->mult_count;
- if (msect == 0)
- return DRIVER(drive)->error(drive, "flagged_pre_task_mulout_intr (multimode not set)", stat);
-
- if (ide_wait_stat(&startstop, drive, DATA_READY,
- BAD_W_STAT, WAIT_DRQ)) {
- printk(KERN_ERR "%s: No DRQ bit after issuing write command.\n", drive->name);
- return startstop;
- }
-
- nsect = (rq->current_nr_sectors > msect) ? msect : rq->current_nr_sectors;
- pBuf = rq->buffer + ((rq->nr_sectors - rq->current_nr_sectors) * SECTOR_SIZE);
- DTF("Multiwrite: %p, nsect: %d , rq->current_nr_sectors: %ld\n",
- pBuf, nsect, rq->current_nr_sectors);
-
- taskfile_output_data(drive, pBuf, nsect * SECTOR_WORDS);
-
- rq->current_nr_sectors -= nsect;
-
- return ide_started;
-}
-
-ide_startstop_t flagged_task_mulout_intr (ide_drive_t *drive)
-{
- ide_hwif_t *hwif = HWIF(drive);
- u8 stat = hwif->INB(IDE_STATUS_REG);
- struct request *rq = HWGROUP(drive)->rq;
- char *pBuf = NULL;
- unsigned int msect, nsect;
-
- msect = drive->mult_count;
- if (msect == 0)
- return DRIVER(drive)->error(drive, "flagged_task_mulout_intr (multimode not set)", stat);
-
- if (!OK_STAT(stat, DRIVE_READY, BAD_W_STAT))
- return DRIVER(drive)->error(drive, "flagged_task_mulout_intr", stat);
-
- if (!rq->current_nr_sectors) {
- ide_end_drive_cmd (drive, stat, hwif->INB(IDE_ERROR_REG));
- return ide_stopped;
- }
-
- if (!OK_STAT(stat, DATA_READY, BAD_W_STAT)) {
- /*
- * (ks) Unexpected ATA data phase detected.
- * This should not happen. But, it can !
- * I am not sure, which function is best to clean up
- * this situation. I choose: ide_error(...)
- */
- return DRIVER(drive)->error(drive, "flagged_task_mulout_intr (unexpected data phase)", stat);
- }
-
- nsect = (rq->current_nr_sectors > msect) ? msect : rq->current_nr_sectors;
- pBuf = rq->buffer + ((rq->nr_sectors - rq->current_nr_sectors) * SECTOR_SIZE);
- DTF("Multiwrite: %p, nsect: %d , rq->current_nr_sectors: %ld\n",
- pBuf, nsect, rq->current_nr_sectors);
-
- taskfile_output_data(drive, pBuf, nsect * SECTOR_WORDS);
- rq->current_nr_sectors -= nsect;
-
- /*
- * (ks) We don't know which command was executed.
- * So, we wait the 'WORSTCASE' value.
- */
- ide_set_handler(drive, &flagged_task_mulout_intr, WAIT_WORSTCASE, NULL);
-
- return ide_started;
-}
git://git.onelab.eu / linux-2.6.git / blobdiff