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SubjectPATCH 2.5.7 IDE 24
Tue Mar 19 22:39:10 CET 2002 ide-clean-24

- Push BAD_DMA_DRIVE and GOOD_DMA_DRIVE to the ide-pmac.c file, since this is
the only place where those get used.

- Kill unused fields from the ide_task_s structure. In esp. we pass a task
attached to a request and not the other way around!

- Rename hwif field to channel in struct ide_drive_s.

- Move the request queue to the level where proper serialization has to happen
anyway - the channel structure.
diff -urN linux-2.5.7/drivers/ide/ide-disk.c linux/drivers/ide/ide-disk.c
--- linux-2.5.7/drivers/ide/ide-disk.c Wed Mar 20 01:32:05 2002
+++ linux/drivers/ide/ide-disk.c Wed Mar 20 00:20:27 2002
@@ -189,8 +189,6 @@
memcpy(args.tfRegister, &taskfile, sizeof(struct hd_drive_task_hdr));
memcpy(args.hobRegister, &hobfile, sizeof(struct hd_drive_hob_hdr));
ide_cmd_type_parser(&args);
- args.rq = rq;
- args.block = block;
rq->special = &args;

return ata_taskfile(drive,
@@ -198,7 +196,7 @@
(struct hd_drive_hob_hdr *) &args.hobRegister,
args.handler,
args.prehandler,
- args.rq);
+ rq);
}

static ide_startstop_t lba28_do_request(ide_drive_t *drive, struct request *rq, unsigned long block)
@@ -235,8 +233,6 @@
memcpy(args.tfRegister, &taskfile, sizeof(struct hd_drive_task_hdr));
memcpy(args.hobRegister, &hobfile, sizeof(struct hd_drive_hob_hdr));
ide_cmd_type_parser(&args);
- args.rq = rq;
- args.block = block;
rq->special = &args;

return ata_taskfile(drive,
@@ -244,7 +240,7 @@
(struct hd_drive_hob_hdr *) &args.hobRegister,
args.handler,
args.prehandler,
- args.rq);
+ rq);
}

/*
@@ -298,8 +294,6 @@
memcpy(args.tfRegister, &taskfile, sizeof(struct hd_drive_task_hdr));
memcpy(args.hobRegister, &hobfile, sizeof(struct hd_drive_hob_hdr));
ide_cmd_type_parser(&args);
- args.rq = rq;
- args.block = block;
rq->special = &args;

return ata_taskfile(drive,
@@ -307,7 +301,7 @@
(struct hd_drive_hob_hdr *) &args.hobRegister,
args.handler,
args.prehandler,
- args.rq);
+ rq);
}

/*
diff -urN linux-2.5.7/drivers/ide/ide-pmac.c linux/drivers/ide/ide-pmac.c
--- linux-2.5.7/drivers/ide/ide-pmac.c Mon Mar 18 21:37:17 2002
+++ linux/drivers/ide/ide-pmac.c Tue Mar 19 22:38:11 2002
@@ -71,6 +71,9 @@

#ifdef CONFIG_BLK_DEV_IDEDMA_PMAC

+# define BAD_DMA_DRIVE 0
+# define GOOD_DMA_DRIVE 1
+
typedef struct {
int accessTime;
int cycleTime;
diff -urN linux-2.5.7/drivers/ide/ide-taskfile.c linux/drivers/ide/ide-taskfile.c
--- linux-2.5.7/drivers/ide/ide-taskfile.c Wed Mar 20 01:32:05 2002
+++ linux/drivers/ide/ide-taskfile.c Tue Mar 19 23:59:50 2002
@@ -927,7 +927,7 @@
/*
* This function is intended to be used prior to invoking ide_do_drive_cmd().
*/
-static void ide_init_drive_taskfile (struct request *rq)
+static void init_taskfile_request(struct request *rq)
{
memset(rq, 0, sizeof(*rq));
rq->flags = REQ_DRIVE_TASKFILE;
@@ -935,11 +935,12 @@

/*
* This is kept for internal use only !!!
- * This is an internal call and nobody in user-space has a damn
+ * This is an internal call and nobody in user-space has a
* reason to call this taskfile.
*
* ide_raw_taskfile is the one that user-space executes.
*/
+
int ide_wait_taskfile(ide_drive_t *drive, struct hd_drive_task_hdr *taskfile, struct hd_drive_hob_hdr *hobfile, byte *buf)
{
struct request rq;
@@ -965,7 +966,8 @@
args.hobRegister[IDE_SELECT_OFFSET_HOB] = hobfile->device_head;
args.hobRegister[IDE_CONTROL_OFFSET_HOB] = hobfile->control;

- ide_init_drive_taskfile(&rq);
+ init_taskfile_request(&rq);
+
/* This is kept for internal use only !!! */
ide_cmd_type_parser(&args);
if (args.command_type != IDE_DRIVE_TASK_NO_DATA)
@@ -973,59 +975,26 @@

rq.buffer = buf;
rq.special = &args;
+
return ide_do_drive_cmd(drive, &rq, ide_wait);
}

int ide_raw_taskfile(ide_drive_t *drive, ide_task_t *args, byte *buf)
{
struct request rq;
- ide_init_drive_taskfile(&rq);
+ init_taskfile_request(&rq);
rq.buffer = buf;

if (args->command_type != IDE_DRIVE_TASK_NO_DATA)
rq.current_nr_sectors = rq.nr_sectors = (args->hobRegister[IDE_NSECTOR_OFFSET_HOB] << 8) | args->tfRegister[IDE_NSECTOR_OFFSET];

rq.special = args;
+
return ide_do_drive_cmd(drive, &rq, ide_wait);
}

/*
- * The taskfile glue table
- *
- * reqtask.data_phase reqtask.req_cmd
- * args.command_type args.handler
- *
- * TASKFILE_P_OUT_DMAQ ?? ??
- * TASKFILE_P_IN_DMAQ ?? ??
- * TASKFILE_P_OUT_DMA ?? ??
- * TASKFILE_P_IN_DMA ?? ??
- * TASKFILE_P_OUT ?? ??
- * TASKFILE_P_IN ?? ??
- *
- * TASKFILE_OUT_DMAQ IDE_DRIVE_TASK_RAW_WRITE NULL
- * TASKFILE_IN_DMAQ IDE_DRIVE_TASK_IN NULL
- *
- * TASKFILE_OUT_DMA IDE_DRIVE_TASK_RAW_WRITE NULL
- * TASKFILE_IN_DMA IDE_DRIVE_TASK_IN NULL
- *
- * TASKFILE_IN_OUT ?? ??
- *
- * TASKFILE_MULTI_OUT IDE_DRIVE_TASK_RAW_WRITE task_mulout_intr
- * TASKFILE_MULTI_IN IDE_DRIVE_TASK_IN task_mulin_intr
- *
- * TASKFILE_OUT IDE_DRIVE_TASK_RAW_WRITE task_out_intr
- * TASKFILE_OUT IDE_DRIVE_TASK_OUT task_out_intr
- *
- * TASKFILE_IN IDE_DRIVE_TASK_IN task_in_intr
- * TASKFILE_NO_DATA IDE_DRIVE_TASK_NO_DATA task_no_data_intr
- *
- * IDE_DRIVE_TASK_SET_XFER task_no_data_intr
- * IDE_DRIVE_TASK_INVALID
- *
- */
-
-/*
- * Issue ATA command and wait for completion. use for implementing commands in
+ * Issue ATA command and wait for completion. Use for implementing commands in
* kernel.
*
* The caller has to make sure buf is never NULL!
diff -urN linux-2.5.7/drivers/ide/ide.c linux/drivers/ide/ide.c
--- linux-2.5.7/drivers/ide/ide.c Wed Mar 20 01:32:05 2002
+++ linux/drivers/ide/ide.c Wed Mar 20 01:19:21 2002
@@ -288,7 +288,7 @@

drive->type = ATA_DISK;
drive->select.all = (unit<<4)|0xa0;
- drive->hwif = hwif;
+ drive->channel = hwif;
drive->ctl = 0x08;
drive->ready_stat = READY_STAT;
drive->bad_wstat = BAD_W_STAT;
@@ -737,11 +737,6 @@
ide_task_t *args = (ide_task_t *) rq->special;
rq->errors = !OK_STAT(stat,READY_STAT,BAD_STAT);
if (args) {
- if (args->tf_in_flags.b.data) {
- unsigned short data = IN_WORD(IDE_DATA_REG);
- args->tfRegister[IDE_DATA_OFFSET] = (data) & 0xFF;
- args->hobRegister[IDE_DATA_OFFSET_HOB] = (data >> 8) & 0xFF;
- }
args->tfRegister[IDE_ERROR_OFFSET] = err;
args->tfRegister[IDE_NSECTOR_OFFSET] = IN_BYTE(IDE_NSECTOR_REG);
args->tfRegister[IDE_SECTOR_OFFSET] = IN_BYTE(IDE_SECTOR_REG);
diff -urN linux-2.5.7/drivers/ide/pdc202xx.c linux/drivers/ide/pdc202xx.c
--- linux-2.5.7/drivers/ide/pdc202xx.c Wed Mar 20 01:32:05 2002
+++ linux/drivers/ide/pdc202xx.c Wed Mar 20 00:08:25 2002
@@ -664,6 +664,7 @@
OUT_BYTE(0xac, datareg);
break;
default:
+ ;
}

if (!drive->init_speed)
diff -urN linux-2.5.7/drivers/ide/pdc4030.c linux/drivers/ide/pdc4030.c
--- linux-2.5.7/drivers/ide/pdc4030.c Mon Mar 18 21:37:08 2002
+++ linux/drivers/ide/pdc4030.c Wed Mar 20 00:17:41 2002
@@ -658,9 +658,6 @@
/* We don't use the generic inerrupt handlers here? */
args.prehandler = NULL;
args.handler = NULL;
- args.rq = rq;
- args.block = block;
- rq->special = NULL;
rq->special = &args;

return do_pdc4030_io(drive, &args);
diff -urN linux-2.5.7/include/linux/ide.h linux/include/linux/ide.h
--- linux-2.5.7/include/linux/ide.h Wed Mar 20 01:32:05 2002
+++ linux/include/linux/ide.h Wed Mar 20 01:19:34 2002
@@ -68,7 +68,7 @@
*/
#define DMA_PIO_RETRY 1 /* retrying in PIO */

-#define HWIF(drive) ((drive)->hwif)
+#define HWIF(drive) ((drive)->channel)
#define HWGROUP(drive) (HWIF(drive)->hwgroup)

/*
@@ -175,17 +175,17 @@
#define WAIT_CMD (10*HZ) /* 10sec - maximum wait for an IRQ to happen */
#define WAIT_MIN_SLEEP (2*HZ/100) /* 20msec - minimum sleep time */

-#define SELECT_DRIVE(hwif,drive) \
+#define SELECT_DRIVE(channel, drive) \
{ \
- if (hwif->selectproc) \
- hwif->selectproc(drive); \
- OUT_BYTE((drive)->select.all, hwif->io_ports[IDE_SELECT_OFFSET]); \
+ if (channel->selectproc) \
+ channel->selectproc(drive); \
+ OUT_BYTE((drive)->select.all, channel->io_ports[IDE_SELECT_OFFSET]); \
}

-#define SELECT_MASK(hwif,drive,mask) \
+#define SELECT_MASK(channel, drive, mask) \
{ \
- if (hwif->maskproc) \
- hwif->maskproc(drive,mask); \
+ if (channel->maskproc) \
+ channel->maskproc(drive,mask); \
}

/*
@@ -235,7 +235,6 @@
int irq; /* our irq number */
int dma; /* our dma entry */
ide_ack_intr_t *ack_intr; /* acknowledge interrupt */
- void *priv; /* interface specific data */
hwif_chipset_t chipset;
} hw_regs_t;

@@ -291,6 +290,8 @@
struct ide_settings_s;

typedef struct ide_drive_s {
+ struct hwif_s *channel; /* parent pointer to the channel we are attached to */
+
unsigned int usage; /* current "open()" count for drive */
char type; /* distingiush different devices: disk, cdrom, tape, floppy, ... */

@@ -339,8 +340,8 @@
byte ctl; /* "normal" value for IDE_CONTROL_REG */
byte ready_stat; /* min status value for drive ready */
byte mult_count; /* current multiple sector setting */
- byte mult_req; /* requested multiple sector setting */
- byte tune_req; /* requested drive tuning setting */
+ byte mult_req; /* requested multiple sector setting */
+ byte tune_req; /* requested drive tuning setting */
byte io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
byte bad_wstat; /* used for ignoring WRERR_STAT */
byte nowerr; /* used for ignoring WRERR_STAT */
@@ -354,20 +355,25 @@
unsigned long capacity; /* total number of sectors */
unsigned long long capacity48; /* total number of sectors */
unsigned int drive_data; /* for use by tuneproc/selectproc as needed */
- struct hwif_s *hwif; /* parent pointer to the interface we are attached to */
+
wait_queue_head_t wqueue; /* used to wait for drive in open() */
+
struct hd_driveid *id; /* drive model identification info */
struct hd_struct *part; /* drive partition table */
+
char name[4]; /* drive name, such as "hda" */
struct ata_operations *driver;
+
void *driver_data; /* extra driver data */
devfs_handle_t de; /* directory for device */
struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
struct ide_settings_s *settings; /* /proc/ide/ drive settings */
char driver_req[10]; /* requests specific driver */
+
int last_lun; /* last logical unit */
int forced_lun; /* if hdxlun was given at boot */
int lun; /* logical unit */
+
int crc_count; /* crc counter to reduce drive speed */
byte quirk_list; /* drive is considered quirky if set for a specific host */
byte suspend_reset; /* drive suspend mode flag, soft-reset recovers */
@@ -409,7 +415,7 @@
*
* If it is not defined for a controller, standard-code is used from ide.c.
*
- * Controllers which are not memory-mapped in the standard way need to
+ * Controllers which are not memory-mapped in the standard way need to
* override that mechanism using this function to work.
*
*/
@@ -478,7 +484,7 @@
struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
int irq; /* our irq number */
int major; /* our major number */
- char name[80]; /* name of interface */
+ char name[8]; /* name of interface */
int index; /* 0 for ide0; 1 for ide1; ... */
hwif_chipset_t chipset; /* sub-module for tuning.. */
unsigned noprobe : 1; /* don't probe for this interface */
@@ -781,15 +787,9 @@
typedef struct ide_task_s {
task_ioreg_t tfRegister[8];
task_ioreg_t hobRegister[8];
- ide_reg_valid_t tf_out_flags;
- ide_reg_valid_t tf_in_flags;
- int data_phase;
int command_type;
ide_pre_handler_t *prehandler;
ide_handler_t *handler;
- void *special; /* valid_t generally */
- struct request *rq; /* copy of request */
- unsigned long block; /* copy of block */
} ide_task_t;

void ata_input_data (ide_drive_t *drive, void *buffer, unsigned int wcount);
@@ -908,8 +908,6 @@
void __init ide_scan_pcibus(int scan_direction);
#endif
#ifdef CONFIG_BLK_DEV_IDEDMA
-# define BAD_DMA_DRIVE 0
-# define GOOD_DMA_DRIVE 1
int ide_build_dmatable (ide_drive_t *drive, ide_dma_action_t func);
void ide_destroy_dmatable (ide_drive_t *drive);
ide_startstop_t ide_dma_intr (ide_drive_t *drive);
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