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Subject[PATCH] 2.5.7 IDE 23
Mon Mar 18 19:02:07 CET 2002 ide-clean-23

- Support for additional Promise controller id's (PDC20276).

- Remove code duplication between do_rw_taskfile and do_taskfile.
This will evolve into a more reasonable ata_command() function
finally. The ata_taskfile function has far too many arguments, but
I favour this over having two different code paths for getting
actual data to the drive.
diff -urN linux-2.5.7-pre2/drivers/ide/ide-disk.c linux/drivers/ide/ide-disk.c
--- linux-2.5.7-pre2/drivers/ide/ide-disk.c Tue Mar 19 03:32:11 2002
+++ linux/drivers/ide/ide-disk.c Tue Mar 19 03:25:58 2002
@@ -106,50 +106,6 @@
return 0; /* lba_capacity value may be bad */
}

-static ide_startstop_t chs_do_request(ide_drive_t *drive, struct request *rq, unsigned long block);
-static ide_startstop_t lba28_do_request(ide_drive_t *drive, struct request *rq, unsigned long block);
-static ide_startstop_t lba48_do_request(ide_drive_t *drive, struct request *rq, unsigned long long block);
-
-/*
- * Issue a READ or WRITE command to a disk, using LBA if supported, or CHS
- * otherwise, to address sectors. It also takes care of issuing special
- * DRIVE_CMDs.
- */
-static ide_startstop_t idedisk_do_request(ide_drive_t *drive, struct request *rq, unsigned long block)
-{
- /*
- * Wait until all request have bin finished.
- */
-
- while (drive->blocked) {
- yield();
- // panic("ide: Request while drive blocked?");
- }
-
- if (!(rq->flags & REQ_CMD)) {
- blk_dump_rq_flags(rq, "idedisk_do_request - bad command");
- ide_end_request(drive, 0);
- return ide_stopped;
- }
-
- if (IS_PDC4030_DRIVE) {
- extern ide_startstop_t promise_rw_disk(ide_drive_t *, struct request *, unsigned long);
-
- return promise_rw_disk(drive, rq, block);
- }
-
- /* 48-bit LBA */
- if ((drive->id->cfs_enable_2 & 0x0400) && (drive->addressing))
- return lba48_do_request(drive, rq, block);
-
- /* 28-bit LBA */
- if (drive->select.b.lba)
- return lba28_do_request(drive, rq, block);
-
- /* 28-bit CHS */
- return chs_do_request(drive, rq, block);
-}
-
static task_ioreg_t get_command(ide_drive_t *drive, int cmd)
{
int lba48bit = (drive->id->cfs_enable_2 & 0x0400) ? 1 : 0;
@@ -158,20 +114,38 @@
lba48bit = drive->addressing;
#endif

- if (cmd == READ) {
- if (drive->using_dma)
- return (lba48bit) ? WIN_READDMA_EXT : WIN_READDMA;
- else if (drive->mult_count)
- return (lba48bit) ? WIN_MULTREAD_EXT : WIN_MULTREAD;
- else
- return (lba48bit) ? WIN_READ_EXT : WIN_READ;
- } else if (cmd == WRITE) {
- if (drive->using_dma)
- return (lba48bit) ? WIN_WRITEDMA_EXT : WIN_WRITEDMA;
- else if (drive->mult_count)
- return (lba48bit) ? WIN_MULTWRITE_EXT : WIN_MULTWRITE;
- else
- return (lba48bit) ? WIN_WRITE_EXT : WIN_WRITE;
+ if (lba48bit) {
+ if (cmd == READ) {
+ if (drive->using_dma)
+ return WIN_READDMA_EXT;
+ else if (drive->mult_count)
+ return WIN_MULTREAD_EXT;
+ else
+ return WIN_READ_EXT;
+ } else if (cmd == WRITE) {
+ if (drive->using_dma)
+ return WIN_WRITEDMA_EXT;
+ else if (drive->mult_count)
+ return WIN_MULTWRITE_EXT;
+ else
+ return WIN_WRITE_EXT;
+ }
+ } else {
+ if (cmd == READ) {
+ if (drive->using_dma)
+ return WIN_READDMA;
+ else if (drive->mult_count)
+ return WIN_MULTREAD;
+ else
+ return WIN_READ;
+ } else if (cmd == WRITE) {
+ if (drive->using_dma)
+ return WIN_WRITEDMA;
+ else if (drive->mult_count)
+ return WIN_MULTWRITE;
+ else
+ return WIN_WRITE;
+ }
}
return WIN_NOP;
}
@@ -183,8 +157,6 @@
ide_task_t args;
int sectors;

- task_ioreg_t command = get_command(drive, rq_data_dir(rq));
-
unsigned int track = (block / drive->sect);
unsigned int sect = (block % drive->sect) + 1;
unsigned int head = (track % drive->head);
@@ -203,7 +175,7 @@
taskfile.high_cylinder = (cyl>>8);
taskfile.device_head = head;
taskfile.device_head |= drive->select.all;
- taskfile.command = command;
+ taskfile.command = get_command(drive, rq_data_dir(rq));

#ifdef DEBUG
printk("%s: %sing: ", drive->name,
@@ -221,7 +193,12 @@
args.block = block;
rq->special = &args;

- return do_rw_taskfile(drive, &args);
+ return ata_taskfile(drive,
+ (struct hd_drive_task_hdr *) &args.tfRegister,
+ (struct hd_drive_hob_hdr *) &args.hobRegister,
+ args.handler,
+ args.prehandler,
+ args.rq);
}

static ide_startstop_t lba28_do_request(ide_drive_t *drive, struct request *rq, unsigned long block)
@@ -231,8 +208,6 @@
ide_task_t args;
int sectors;

- task_ioreg_t command = get_command(drive, rq_data_dir(rq));
-
sectors = rq->nr_sectors;
if (sectors == 256)
sectors = 0;
@@ -246,7 +221,7 @@
taskfile.high_cylinder = (block>>=8);
taskfile.device_head = ((block>>8)&0x0f);
taskfile.device_head |= drive->select.all;
- taskfile.command = command;
+ taskfile.command = get_command(drive, rq_data_dir(rq));

#ifdef DEBUG
printk("%s: %sing: ", drive->name,
@@ -264,7 +239,12 @@
args.block = block;
rq->special = &args;

- return do_rw_taskfile(drive, &args);
+ return ata_taskfile(drive,
+ (struct hd_drive_task_hdr *) &args.tfRegister,
+ (struct hd_drive_hob_hdr *) &args.hobRegister,
+ args.handler,
+ args.prehandler,
+ args.rq);
}

/*
@@ -280,8 +260,6 @@
ide_task_t args;
int sectors;

- task_ioreg_t command = get_command(drive, rq_data_dir(rq));
-
memset(&taskfile, 0, sizeof(task_struct_t));
memset(&hobfile, 0, sizeof(hob_struct_t));

@@ -306,7 +284,7 @@
taskfile.device_head = drive->select.all;
hobfile.device_head = taskfile.device_head;
hobfile.control = (drive->ctl|0x80);
- taskfile.command = command;
+ taskfile.command = get_command(drive, rq_data_dir(rq));

#ifdef DEBUG
printk("%s: %sing: ", drive->name,
@@ -324,7 +302,52 @@
args.block = block;
rq->special = &args;

- return do_rw_taskfile(drive, &args);
+ return ata_taskfile(drive,
+ (struct hd_drive_task_hdr *) &args.tfRegister,
+ (struct hd_drive_hob_hdr *) &args.hobRegister,
+ args.handler,
+ args.prehandler,
+ args.rq);
+}
+
+/*
+ * Issue a READ or WRITE command to a disk, using LBA if supported, or CHS
+ * otherwise, to address sectors. It also takes care of issuing special
+ * DRIVE_CMDs.
+ */
+static ide_startstop_t idedisk_do_request(ide_drive_t *drive, struct request *rq, unsigned long block)
+{
+ /*
+ * Wait until all request have bin finished.
+ */
+
+ while (drive->blocked) {
+ yield();
+ // panic("ide: Request while drive blocked?");
+ }
+
+ if (!(rq->flags & REQ_CMD)) {
+ blk_dump_rq_flags(rq, "idedisk_do_request - bad command");
+ ide_end_request(drive, 0);
+ return ide_stopped;
+ }
+
+ if (IS_PDC4030_DRIVE) {
+ extern ide_startstop_t promise_rw_disk(ide_drive_t *, struct request *, unsigned long);
+
+ return promise_rw_disk(drive, rq, block);
+ }
+
+ /* 48-bit LBA */
+ if ((drive->id->cfs_enable_2 & 0x0400) && (drive->addressing))
+ return lba48_do_request(drive, rq, block);
+
+ /* 28-bit LBA */
+ if (drive->select.b.lba)
+ return lba28_do_request(drive, rq, block);
+
+ /* 28-bit CHS */
+ return chs_do_request(drive, rq, block);
}

static int idedisk_open (struct inode *inode, struct file *filp, ide_drive_t *drive)
@@ -333,10 +356,13 @@
if (drive->removable && drive->usage == 1) {
struct hd_drive_task_hdr taskfile;
struct hd_drive_hob_hdr hobfile;
+
memset(&taskfile, 0, sizeof(struct hd_drive_task_hdr));
memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
+
check_disk_change(inode->i_rdev);
taskfile.command = WIN_DOORLOCK;
+
/*
* Ignore the return code from door_lock,
* since the open() has already succeeded,
@@ -355,11 +381,10 @@
struct hd_drive_hob_hdr hobfile;
memset(&taskfile, 0, sizeof(struct hd_drive_task_hdr));
memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
- if (drive->id->cfs_enable_2 & 0x2400) {
+ if (drive->id->cfs_enable_2 & 0x2400)
taskfile.command = WIN_FLUSH_CACHE_EXT;
- } else {
+ else
taskfile.command = WIN_FLUSH_CACHE;
- }
return ide_wait_taskfile(drive, &taskfile, &hobfile, NULL);
}

@@ -643,7 +668,7 @@
taskfile.command = WIN_SPECIFY;
handler = set_geometry_intr;;
}
- do_taskfile(drive, &taskfile, &hobfile, handler);
+ ata_taskfile(drive, &taskfile, &hobfile, handler, NULL, NULL);
} else if (s->b.recalibrate) {
s->b.recalibrate = 0;
if (!IS_PDC4030_DRIVE) {
@@ -653,7 +678,7 @@
memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
taskfile.sector_count = drive->sect;
taskfile.command = WIN_RESTORE;
- do_taskfile(drive, &taskfile, &hobfile, recal_intr);
+ ata_taskfile(drive, &taskfile, &hobfile, recal_intr, NULL, NULL);
}
} else if (s->b.set_multmode) {
s->b.set_multmode = 0;
@@ -666,7 +691,7 @@
memset(&hobfile, 0, sizeof(struct hd_drive_hob_hdr));
taskfile.sector_count = drive->mult_req;
taskfile.command = WIN_SETMULT;
- do_taskfile(drive, &taskfile, &hobfile, &set_multmode_intr);
+ ata_taskfile(drive, &taskfile, &hobfile, set_multmode_intr, NULL, NULL);
}
} else if (s->all) {
int special = s->all;
diff -urN linux-2.5.7-pre2/drivers/ide/ide-pci.c linux/drivers/ide/ide-pci.c
--- linux-2.5.7-pre2/drivers/ide/ide-pci.c Tue Mar 19 03:32:11 2002
+++ linux/drivers/ide/ide-pci.c Tue Mar 19 00:52:41 2002
@@ -229,6 +229,7 @@
{PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20268R, pci_init_pdc202xx, ata66_pdc202xx, ide_init_pdc202xx, NULL, {{0x00,0x00,0x00}, {0x00,0x00,0x00}}, OFF_BOARD, 0, ATA_F_IRQ | ATA_F_DMA },
{PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20269, pci_init_pdc202xx, ata66_pdc202xx, ide_init_pdc202xx, NULL, {{0x00,0x00,0x00}, {0x00,0x00,0x00}}, OFF_BOARD, 0, ATA_F_IRQ | ATA_F_DMA },
{PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20275, pci_init_pdc202xx, ata66_pdc202xx, ide_init_pdc202xx, NULL, {{0x00,0x00,0x00}, {0x00,0x00,0x00}}, OFF_BOARD, 0, ATA_F_IRQ | ATA_F_DMA },
+ {PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20276, pci_init_pdc202xx, ata66_pdc202xx, ide_init_pdc202xx, NULL, {{0x00,0x00,0x00}, {0x00,0x00,0x00}}, OFF_BOARD, 0, ATA_F_IRQ | ATA_F_DMA },
#endif
#ifdef CONFIG_BLK_DEV_RZ1000
{PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_RZ1000, NULL, NULL, ide_init_rz1000, NULL, {{0x00,0x00,0x00}, {0x00,0x00,0x00}}, ON_BOARD, 0, 0 },
diff -urN linux-2.5.7-pre2/drivers/ide/ide-taskfile.c linux/drivers/ide/ide-taskfile.c
--- linux-2.5.7-pre2/drivers/ide/ide-taskfile.c Tue Mar 19 03:32:12 2002
+++ linux/drivers/ide/ide-taskfile.c Tue Mar 19 03:26:14 2002
@@ -48,7 +48,7 @@
if (rq->bio)
return bio_kmap_irq(rq->bio, flags) + ide_rq_offset(rq);
else
- return rq->buffer + task_rq_offset(rq);
+ return rq->buffer + ((rq)->nr_sectors - (rq)->current_nr_sectors) * SECTOR_SIZE;
}

static inline void ide_unmap_rq(struct request *rq, char *to,
@@ -341,27 +341,37 @@
pBuf = ide_map_rq(rq, &flags);
DTF("Multiwrite: %p, nsect: %d , rq->current_nr_sectors: %ld\n",
pBuf, nsect, rq->current_nr_sectors);
+
drive->io_32bit = 0;
taskfile_output_data(drive, pBuf, nsect * SECTOR_WORDS);
+
ide_unmap_rq(rq, pBuf, &flags);
+
drive->io_32bit = io_32bit;
+
rq->errors = 0;
/* Are we sure that this as all been already transfered? */
rq->current_nr_sectors -= nsect;
+
if (hwgroup->handler == NULL)
ide_set_handler(drive, &task_mulout_intr, WAIT_CMD, NULL);
+
return ide_started;
}

-ide_startstop_t do_rw_taskfile(ide_drive_t *drive, ide_task_t *task)
+ide_startstop_t ata_taskfile(ide_drive_t *drive,
+ struct hd_drive_task_hdr *taskfile,
+ struct hd_drive_hob_hdr *hobfile,
+ ide_handler_t *handler,
+ ide_pre_handler_t *prehandler,
+ struct request *rq
+ )
{
- task_struct_t *taskfile = (task_struct_t *) task->tfRegister;
- hob_struct_t *hobfile = (hob_struct_t *) task->hobRegister;
struct hd_driveid *id = drive->id;
- byte HIHI = (drive->addressing) ? 0xE0 : 0xEF;
+ u8 HIHI = (drive->addressing) ? 0xE0 : 0xEF;

/* (ks/hs): Moved to start, do not use for multiple out commands */
- if (task->handler != task_mulout_intr && task->handler != bio_mulout_intr) {
+ if (handler != task_mulout_intr && handler != bio_mulout_intr) {
if (IDE_CONTROL_REG)
OUT_BYTE(drive->ctl, IDE_CONTROL_REG); /* clear nIEN */
SELECT_MASK(HWIF(drive), drive, 0);
@@ -386,17 +396,16 @@
OUT_BYTE(taskfile->high_cylinder, IDE_HCYL_REG);

OUT_BYTE((taskfile->device_head & HIHI) | drive->select.all, IDE_SELECT_REG);
- if (task->handler != NULL) {
- ide_set_handler (drive, task->handler, WAIT_CMD, NULL);
+ if (handler != NULL) {
+ ide_set_handler(drive, handler, WAIT_CMD, NULL);
OUT_BYTE(taskfile->command, IDE_COMMAND_REG);
/*
* Warning check for race between handler and prehandler for
* writing first block of data. however since we are well
* inside the boundaries of the seek, we should be okay.
*/
- if (task->prehandler != NULL) {
- return task->prehandler(drive, task->rq);
- }
+ if (prehandler != NULL)
+ return prehandler(drive, rq);
} else {
/* for dma commands we down set the handler */
if (drive->using_dma && !(HWIF(drive)->dmaproc(((taskfile->command == WIN_WRITEDMA) || (taskfile->command == WIN_WRITEDMA_EXT)) ? ide_dma_write : ide_dma_read, drive)));
@@ -405,48 +414,6 @@
return ide_started;
}

-void do_taskfile(ide_drive_t *drive, struct hd_drive_task_hdr *taskfile,
- struct hd_drive_hob_hdr *hobfile,
- ide_handler_t *handler)
-{
- struct hd_driveid *id = drive->id;
- byte HIHI = (drive->addressing) ? 0xE0 : 0xEF;
-
- /* (ks/hs): Moved to start, do not use for multiple out commands */
- if (*handler != task_mulout_intr && handler != bio_mulout_intr) {
- if (IDE_CONTROL_REG)
- OUT_BYTE(drive->ctl, IDE_CONTROL_REG); /* clear nIEN */
- SELECT_MASK(HWIF(drive), drive, 0);
- }
-
- if ((id->command_set_2 & 0x0400) &&
- (id->cfs_enable_2 & 0x0400) &&
- (drive->addressing == 1)) {
- OUT_BYTE(hobfile->feature, IDE_FEATURE_REG);
- OUT_BYTE(hobfile->sector_count, IDE_NSECTOR_REG);
- OUT_BYTE(hobfile->sector_number, IDE_SECTOR_REG);
- OUT_BYTE(hobfile->low_cylinder, IDE_LCYL_REG);
- OUT_BYTE(hobfile->high_cylinder, IDE_HCYL_REG);
- }
-
- OUT_BYTE(taskfile->feature, IDE_FEATURE_REG);
- OUT_BYTE(taskfile->sector_count, IDE_NSECTOR_REG);
- /* refers to number of sectors to transfer */
- OUT_BYTE(taskfile->sector_number, IDE_SECTOR_REG);
- /* refers to sector offset or start sector */
- OUT_BYTE(taskfile->low_cylinder, IDE_LCYL_REG);
- OUT_BYTE(taskfile->high_cylinder, IDE_HCYL_REG);
-
- OUT_BYTE((taskfile->device_head & HIHI) | drive->select.all, IDE_SELECT_REG);
- if (handler != NULL) {
- ide_set_handler (drive, handler, WAIT_CMD, NULL);
- OUT_BYTE(taskfile->command, IDE_COMMAND_REG);
- } else {
- /* for dma commands we down set the handler */
- if (drive->using_dma && !(HWIF(drive)->dmaproc(((taskfile->command == WIN_WRITEDMA) || (taskfile->command == WIN_WRITEDMA_EXT)) ? ide_dma_write : ide_dma_read, drive)));
- }
-}
-
/*
* This is invoked on completion of a WIN_SETMULT cmd.
*/
@@ -1162,8 +1129,7 @@
EXPORT_SYMBOL(atapi_output_bytes);
EXPORT_SYMBOL(taskfile_input_data);
EXPORT_SYMBOL(taskfile_output_data);
-EXPORT_SYMBOL(do_rw_taskfile);
-EXPORT_SYMBOL(do_taskfile);
+EXPORT_SYMBOL(ata_taskfile);

EXPORT_SYMBOL(recal_intr);
EXPORT_SYMBOL(set_geometry_intr);
diff -urN linux-2.5.7-pre2/drivers/ide/ide.c linux/drivers/ide/ide.c
--- linux-2.5.7-pre2/drivers/ide/ide.c Mon Mar 18 16:15:28 2002
+++ linux/drivers/ide/ide.c Tue Mar 19 03:14:40 2002
@@ -978,7 +978,7 @@
* setting a timer to wake up at half second intervals thereafter,
* until timeout is achieved, before timing out.
*/
-int ide_wait_stat (ide_startstop_t *startstop, ide_drive_t *drive, byte good, byte bad, unsigned long timeout) {
+int ide_wait_stat(ide_startstop_t *startstop, ide_drive_t *drive, byte good, byte bad, unsigned long timeout) {
byte stat;
int i;
unsigned long flags;
@@ -1020,90 +1020,6 @@
}

/*
- * execute_drive_cmd() issues a special drive command,
- * usually initiated by ioctl() from the external hdparm program.
- */
-static ide_startstop_t execute_drive_cmd (ide_drive_t *drive, struct request *rq)
-{
- if (rq->flags & REQ_DRIVE_TASKFILE) {
- ide_task_t *args = rq->special;
-
- if (!(args))
- goto args_error;
-
- do_taskfile(drive,
- (struct hd_drive_task_hdr *)&args->tfRegister,
- (struct hd_drive_hob_hdr *)&args->hobRegister,
- args->handler);
-
- if (((args->command_type == IDE_DRIVE_TASK_RAW_WRITE) ||
- (args->command_type == IDE_DRIVE_TASK_OUT)) &&
- args->prehandler && args->handler)
- return args->prehandler(drive, rq);
- return ide_started;
-
- } else if (rq->flags & REQ_DRIVE_TASK) {
- byte *args = rq->buffer;
- byte sel;
-
- if (!(args)) goto args_error;
-#ifdef DEBUG
- printk("%s: DRIVE_TASK_CMD ", drive->name);
- printk("cmd=0x%02x ", args[0]);
- printk("fr=0x%02x ", args[1]);
- printk("ns=0x%02x ", args[2]);
- printk("sc=0x%02x ", args[3]);
- printk("lcyl=0x%02x ", args[4]);
- printk("hcyl=0x%02x ", args[5]);
- printk("sel=0x%02x\n", args[6]);
-#endif
- OUT_BYTE(args[1], IDE_FEATURE_REG);
- OUT_BYTE(args[3], IDE_SECTOR_REG);
- OUT_BYTE(args[4], IDE_LCYL_REG);
- OUT_BYTE(args[5], IDE_HCYL_REG);
- sel = (args[6] & ~0x10);
- if (drive->select.b.unit)
- sel |= 0x10;
- OUT_BYTE(sel, IDE_SELECT_REG);
- ide_cmd(drive, args[0], args[2], &drive_cmd_intr);
- return ide_started;
- } else if (rq->flags & REQ_DRIVE_CMD) {
-
- byte *args = rq->buffer;
- if (!(args)) goto args_error;
-#ifdef DEBUG
- printk("%s: DRIVE_CMD ", drive->name);
- printk("cmd=0x%02x ", args[0]);
- printk("sc=0x%02x ", args[1]);
- printk("fr=0x%02x ", args[2]);
- printk("xx=0x%02x\n", args[3]);
-#endif
- if (args[0] == WIN_SMART) {
- OUT_BYTE(0x4f, IDE_LCYL_REG);
- OUT_BYTE(0xc2, IDE_HCYL_REG);
- OUT_BYTE(args[2],IDE_FEATURE_REG);
- OUT_BYTE(args[1],IDE_SECTOR_REG);
- ide_cmd(drive, args[0], args[3], &drive_cmd_intr);
- return ide_started;
- }
- OUT_BYTE(args[2],IDE_FEATURE_REG);
- ide_cmd(drive, args[0], args[1], &drive_cmd_intr);
- return ide_started;
- }
-
-args_error:
- /*
- * NULL is actually a valid way of waiting for
- * all current requests to be flushed from the queue.
- */
-#ifdef DEBUG
- printk("%s: DRIVE_CMD (null)\n", drive->name);
-#endif
- ide_end_drive_cmd(drive, GET_STAT(), GET_ERR());
- return ide_stopped;
-}
-
-/*
* start_request() initiates handling of a new I/O request
*/
static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
@@ -1150,9 +1066,100 @@
printk(KERN_WARNING "%s: drive not ready for command\n", drive->name);
return startstop;
}
+
+ /* FIXME: We can see nicely here that all commands should be submitted
+ * through the request queue and that the special field in drive should
+ * go as soon as possible!
+ */
+
if (!drive->special.all) {
- if (rq->flags & (REQ_DRIVE_CMD | REQ_DRIVE_TASK | REQ_DRIVE_TASKFILE))
- return execute_drive_cmd(drive, rq);
+ if (rq->flags & (REQ_DRIVE_CMD | REQ_DRIVE_TASK | REQ_DRIVE_TASKFILE)) {
+ /* This issues a special drive command, usually
+ * initiated by ioctl() from the external hdparm
+ * program.
+ */
+
+ if (rq->flags & REQ_DRIVE_TASKFILE) {
+ ide_task_t *args = rq->special;
+
+ if (!(args))
+ goto args_error;
+
+ ata_taskfile(drive,
+ (struct hd_drive_task_hdr *)&args->tfRegister,
+ (struct hd_drive_hob_hdr *)&args->hobRegister,
+ args->handler, NULL, NULL);
+
+ if (((args->command_type == IDE_DRIVE_TASK_RAW_WRITE) ||
+ (args->command_type == IDE_DRIVE_TASK_OUT)) &&
+ args->prehandler && args->handler)
+ return args->prehandler(drive, rq);
+ return ide_started;
+
+ } else if (rq->flags & REQ_DRIVE_TASK) {
+ byte *args = rq->buffer;
+ byte sel;
+
+ if (!(args)) goto args_error;
+#ifdef DEBUG
+ printk("%s: DRIVE_TASK_CMD ", drive->name);
+ printk("cmd=0x%02x ", args[0]);
+ printk("fr=0x%02x ", args[1]);
+ printk("ns=0x%02x ", args[2]);
+ printk("sc=0x%02x ", args[3]);
+ printk("lcyl=0x%02x ", args[4]);
+ printk("hcyl=0x%02x ", args[5]);
+ printk("sel=0x%02x\n", args[6]);
+#endif
+ OUT_BYTE(args[1], IDE_FEATURE_REG);
+ OUT_BYTE(args[3], IDE_SECTOR_REG);
+ OUT_BYTE(args[4], IDE_LCYL_REG);
+ OUT_BYTE(args[5], IDE_HCYL_REG);
+ sel = (args[6] & ~0x10);
+ if (drive->select.b.unit)
+ sel |= 0x10;
+ OUT_BYTE(sel, IDE_SELECT_REG);
+ ide_cmd(drive, args[0], args[2], &drive_cmd_intr);
+ return ide_started;
+ } else if (rq->flags & REQ_DRIVE_CMD) {
+ byte *args = rq->buffer;
+ if (!(args)) goto args_error;
+#ifdef DEBUG
+ printk("%s: DRIVE_CMD ", drive->name);
+ printk("cmd=0x%02x ", args[0]);
+ printk("sc=0x%02x ", args[1]);
+ printk("fr=0x%02x ", args[2]);
+ printk("xx=0x%02x\n", args[3]);
+#endif
+ if (args[0] == WIN_SMART) {
+ OUT_BYTE(0x4f, IDE_LCYL_REG);
+ OUT_BYTE(0xc2, IDE_HCYL_REG);
+ OUT_BYTE(args[2],IDE_FEATURE_REG);
+ OUT_BYTE(args[1],IDE_SECTOR_REG);
+ ide_cmd(drive, args[0], args[3], &drive_cmd_intr);
+
+ return ide_started;
+ }
+ OUT_BYTE(args[2],IDE_FEATURE_REG);
+ ide_cmd(drive, args[0], args[1], &drive_cmd_intr);
+ return ide_started;
+ }
+
+args_error:
+ /*
+ * NULL is actually a valid way of waiting for all
+ * current requests to be flushed from the queue.
+ */
+#ifdef DEBUG
+ printk("%s: DRIVE_CMD (null)\n", drive->name);
+#endif
+ ide_end_drive_cmd(drive, GET_STAT(), GET_ERR());
+ return ide_stopped;
+ }
+
+ /* The normal way of execution is to pass execute the request
+ * handler.
+ */

if (ata_ops(drive)) {
if (ata_ops(drive)->do_request)
@@ -1699,31 +1706,29 @@
}

/*
- * This function issues a special IDE device request
- * onto the request queue.
+ * This function issues a special IDE device request onto the request queue.
*
- * If action is ide_wait, then the rq is queued at the end of the
- * request queue, and the function sleeps until it has been processed.
- * This is for use when invoked from an ioctl handler.
+ * If action is ide_wait, then the rq is queued at the end of the request
+ * queue, and the function sleeps until it has been processed. This is for use
+ * when invoked from an ioctl handler.
*
- * If action is ide_preempt, then the rq is queued at the head of
- * the request queue, displacing the currently-being-processed
- * request and this function returns immediately without waiting
- * for the new rq to be completed. This is VERY DANGEROUS, and is
- * intended for careful use by the ATAPI tape/cdrom driver code.
+ * If action is ide_preempt, then the rq is queued at the head of the request
+ * queue, displacing the currently-being-processed request and this function
+ * returns immediately without waiting for the new rq to be completed. This is
+ * VERY DANGEROUS, and is intended for careful use by the ATAPI tape/cdrom
+ * driver code.
*
- * If action is ide_next, then the rq is queued immediately after
- * the currently-being-processed-request (if any), and the function
- * returns without waiting for the new rq to be completed. As above,
- * This is VERY DANGEROUS, and is intended for careful use by the
- * ATAPI tape/cdrom driver code.
+ * If action is ide_next, then the rq is queued immediately after the
+ * currently-being-processed-request (if any), and the function returns without
+ * waiting for the new rq to be completed. As above, This is VERY DANGEROUS,
+ * and is intended for careful use by the ATAPI tape/cdrom driver code.
*
- * If action is ide_end, then the rq is queued at the end of the
- * request queue, and the function returns immediately without waiting
- * for the new rq to be completed. This is again intended for careful
- * use by the ATAPI tape/cdrom driver code.
+ * If action is ide_end, then the rq is queued at the end of the request queue,
+ * and the function returns immediately without waiting for the new rq to be
+ * completed. This is again intended for careful use by the ATAPI tape/cdrom
+ * driver code.
*/
-int ide_do_drive_cmd (ide_drive_t *drive, struct request *rq, ide_action_t action)
+int ide_do_drive_cmd(ide_drive_t *drive, struct request *rq, ide_action_t action)
{
unsigned long flags;
ide_hwgroup_t *hwgroup = HWGROUP(drive);
@@ -2403,7 +2408,7 @@
ide_init_drive_cmd(&rq);
drive->tune_req = (byte) arg;
drive->special.b.set_tune = 1;
- (void) ide_do_drive_cmd (drive, &rq, ide_wait);
+ ide_do_drive_cmd(drive, &rq, ide_wait);
return 0;
}

diff -urN linux-2.5.7-pre2/drivers/ide/pdc202xx.c linux/drivers/ide/pdc202xx.c
--- linux-2.5.7-pre2/drivers/ide/pdc202xx.c Mon Mar 18 16:15:28 2002
+++ linux/drivers/ide/pdc202xx.c Tue Mar 19 00:49:59 2002
@@ -217,6 +217,9 @@
case PCI_DEVICE_ID_PROMISE_20275:
p += sprintf(p, "\n PDC20275 Chipset.\n");
break;
+ case PCI_DEVICE_ID_PROMISE_20276:
+ p += sprintf(p, "\n PDC20276 Chipset.\n");
+ break;
case PCI_DEVICE_ID_PROMISE_20269:
p += sprintf(p, "\n PDC20269 TX2 Chipset.\n");
break;
@@ -236,6 +239,7 @@
char *p = buffer;
switch(bmide_dev->device) {
case PCI_DEVICE_ID_PROMISE_20275:
+ case PCI_DEVICE_ID_PROMISE_20276:
case PCI_DEVICE_ID_PROMISE_20269:
case PCI_DEVICE_ID_PROMISE_20268:
case PCI_DEVICE_ID_PROMISE_20268R:
@@ -732,6 +736,7 @@

switch(dev->device) {
case PCI_DEVICE_ID_PROMISE_20275:
+ case PCI_DEVICE_ID_PROMISE_20276:
case PCI_DEVICE_ID_PROMISE_20269:
udma_133 = (udma_66) ? 1 : 0;
udma_100 = (udma_66) ? 1 : 0;
@@ -989,6 +994,7 @@

switch (dev->device) {
case PCI_DEVICE_ID_PROMISE_20275:
+ case PCI_DEVICE_ID_PROMISE_20276:
case PCI_DEVICE_ID_PROMISE_20269:
case PCI_DEVICE_ID_PROMISE_20268R:
case PCI_DEVICE_ID_PROMISE_20268:
@@ -1121,6 +1127,7 @@

switch (dev->device) {
case PCI_DEVICE_ID_PROMISE_20275:
+ case PCI_DEVICE_ID_PROMISE_20276:
case PCI_DEVICE_ID_PROMISE_20269:
case PCI_DEVICE_ID_PROMISE_20268R:
case PCI_DEVICE_ID_PROMISE_20268:
@@ -1215,6 +1222,7 @@

switch(hwif->pci_dev->device) {
case PCI_DEVICE_ID_PROMISE_20275:
+ case PCI_DEVICE_ID_PROMISE_20276:
case PCI_DEVICE_ID_PROMISE_20269:
case PCI_DEVICE_ID_PROMISE_20268:
case PCI_DEVICE_ID_PROMISE_20268R:
@@ -1233,6 +1241,7 @@

switch(hwif->pci_dev->device) {
case PCI_DEVICE_ID_PROMISE_20275:
+ case PCI_DEVICE_ID_PROMISE_20276:
case PCI_DEVICE_ID_PROMISE_20269:
case PCI_DEVICE_ID_PROMISE_20268:
case PCI_DEVICE_ID_PROMISE_20268R:
diff -urN linux-2.5.7-pre2/drivers/pci/pci.ids linux/drivers/pci/pci.ids
--- linux-2.5.7-pre2/drivers/pci/pci.ids Tue Mar 19 03:32:12 2002
+++ linux/drivers/pci/pci.ids Tue Mar 19 00:55:59 2002
@@ -1108,12 +1108,14 @@
1059 Teknor Industrial Computers Inc
105a Promise Technology, Inc.
0d30 20265
+ 1275 20275
4d30 20267
4d33 20246
4d38 20262
4d68 20268
6268 20268R
4d69 20269
+ 5275 20276
5300 DC5300
105b Foxconn International, Inc.
105c Wipro Infotech Limited
diff -urN linux-2.5.7-pre2/include/linux/ide.h linux/include/linux/ide.h
--- linux-2.5.7-pre2/include/linux/ide.h Tue Mar 19 03:32:12 2002
+++ linux/include/linux/ide.h Tue Mar 19 03:21:55 2002
@@ -771,35 +771,7 @@
*/
#define ide_rq_offset(rq) (((rq)->hard_cur_sectors - (rq)->current_nr_sectors) << 9)

-#define task_rq_offset(rq) \
- (((rq)->nr_sectors - (rq)->current_nr_sectors) * SECTOR_SIZE)
-
-/*
- * This function issues a special IDE device request
- * onto the request queue.
- *
- * If action is ide_wait, then the rq is queued at the end of the
- * request queue, and the function sleeps until it has been processed.
- * This is for use when invoked from an ioctl handler.
- *
- * If action is ide_preempt, then the rq is queued at the head of
- * the request queue, displacing the currently-being-processed
- * request and this function returns immediately without waiting
- * for the new rq to be completed. This is VERY DANGEROUS, and is
- * intended for careful use by the ATAPI tape/cdrom driver code.
- *
- * If action is ide_next, then the rq is queued immediately after
- * the currently-being-processed-request (if any), and the function
- * returns without waiting for the new rq to be completed. As above,
- * This is VERY DANGEROUS, and is intended for careful use by the
- * ATAPI tape/cdrom driver code.
- *
- * If action is ide_end, then the rq is queued at the end of the
- * request queue, and the function returns immediately without waiting
- * for the new rq to be completed. This is again intended for careful
- * use by the ATAPI tape/cdrom driver code.
- */
-int ide_do_drive_cmd (ide_drive_t *drive, struct request *rq, ide_action_t action);
+extern int ide_do_drive_cmd(ide_drive_t *drive, struct request *rq, ide_action_t action);

/*
* Clean up after success/failure of an explicit drive cmd.
@@ -827,15 +799,12 @@
void taskfile_input_data (ide_drive_t *drive, void *buffer, unsigned int wcount);
void taskfile_output_data (ide_drive_t *drive, void *buffer, unsigned int wcount);

-/*
- * taskfile io for disks for now...
- */
-ide_startstop_t do_rw_taskfile (ide_drive_t *drive, ide_task_t *task);
-
-/*
- * Builds request from ide_ioctl
- */
-void do_taskfile (ide_drive_t *drive, struct hd_drive_task_hdr *taskfile, struct hd_drive_hob_hdr *hobfile, ide_handler_t *handler);
+extern ide_startstop_t ata_taskfile(ide_drive_t *drive,
+ struct hd_drive_task_hdr *taskfile,
+ struct hd_drive_hob_hdr *hobfile,
+ ide_handler_t *handler,
+ ide_pre_handler_t *prehandler,
+ struct request *rq);

/*
* Special Flagged Register Validation Caller
@@ -871,7 +840,7 @@
* idedisk_input_data() is a wrapper around ide_input_data() which copes
* with byte-swapping the input data if required.
*/
-inline void idedisk_input_data (ide_drive_t *drive, void *buffer, unsigned int wcount);
+extern void idedisk_input_data(ide_drive_t *drive, void *buffer, unsigned int wcount);

/*
* ide_stall_queue() can be used by a drive to give excess bandwidth back
diff -urN linux-2.5.7-pre2/include/linux/pci_ids.h linux/include/linux/pci_ids.h
--- linux-2.5.7-pre2/include/linux/pci_ids.h Tue Mar 19 03:32:12 2002
+++ linux/include/linux/pci_ids.h Tue Mar 19 00:44:14 2002
@@ -608,6 +608,7 @@
#define PCI_DEVICE_ID_PROMISE_20268R 0x6268
#define PCI_DEVICE_ID_PROMISE_20269 0x4d69
#define PCI_DEVICE_ID_PROMISE_20275 0x1275
+#define PCI_DEVICE_ID_PROMISE_20276 0x5275
#define PCI_DEVICE_ID_PROMISE_5300 0x5300

#define PCI_VENDOR_ID_N9 0x105d
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