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From: Martin Dalecki <dalecki@evision-ventures.com>
To: Linus Torvalds <torvalds@transmeta.com>
Subject: [PATCH] 2.5.8 IDE 36
Date: Tue, 16 Apr 2002 09:05:21 +0200
Cc: Kernel Mailing List <linux-kernel@vger.kernel.org>
Tue Apr 16 01:02:47 CEST 2002 ide-clean-36
- Consolidate ide_choose_drive() and choose_drive() in to one function.
- Remove sector data byteswpapping support. Byte-swapping the data is supported
on the file-system level where applicable. Byte-swapped interfaces are
supported on a lower level anyway. And finally it was used inconsistently.
- Eliminate taskfile_input_data() and taskfile_output_data(). This allowed us
to split up ideproc and eliminate the ugly action switch as well as the
corresponding defines.
- Remove tons of unnecessary typedefs from ide.h
- Prepate the PIO read write code for soon overhaul.
- Misc small bits here and there :-).
diff -urN linux-2.5.8/arch/cris/drivers/ide.c linux/arch/cris/drivers/ide.c
--- linux-2.5.8/arch/cris/drivers/ide.c Mon Apr 15 08:53:39 2002
+++ linux/arch/cris/drivers/ide.c Tue Apr 16 03:44:10 2002
@@ -272,13 +272,17 @@
printk("ide: ETRAX 100LX built-in ATA DMA controller\n");
/* first initialize the channel interface data */
-
+
for(h = 0; h < MAX_HWIFS; h++) {
struct ata_channel *hwif = &ide_hwifs[h];
+
hwif->chipset = ide_etrax100;
hwif->tuneproc = &tune_e100_ide;
hwif->dmaproc = &e100_dmaproc;
- hwif->ideproc = &e100_ideproc;
+ hwif->ata_read = e100_ide_input_data;
+ hwif->ata_write = e100_ide_input_data;
+ hwif->atapi_read = e100_atapi_read;
+ hwif->atapi_write = e100_atapi_write;
}
/* actually reset and configure the etrax100 ide/ata interface */
@@ -375,12 +379,12 @@
* so if an odd bytecount is specified, be sure that there's at least one
* extra byte allocated for the buffer.
*/
-static void
-e100_atapi_input_bytes (ide_drive_t *drive, void *buffer, unsigned int bytecount)
+static void
+e100_atapi_read(ide_drive_t *drive, void *buffer, unsigned int bytecount)
{
ide_ioreg_t data_reg = IDE_DATA_REG;
- D(printk("atapi_input_bytes, dreg 0x%x, buffer 0x%x, count %d\n",
+ D(printk("atapi_read, dreg 0x%x, buffer 0x%x, count %d\n",
data_reg, buffer, bytecount));
if(bytecount & 1) {
@@ -454,12 +458,12 @@
#endif
}
-static void
-e100_atapi_output_bytes (ide_drive_t *drive, void *buffer, unsigned int bytecount)
+static void
+e100_atapi_write(ide_drive_t *drive, void *buffer, unsigned int bytecount)
{
ide_ioreg_t data_reg = IDE_DATA_REG;
- D(printk("atapi_output_bytes, dreg 0x%x, buffer 0x%x, count %d\n",
+ D(printk("atapi_write, dreg 0x%x, buffer 0x%x, count %d\n",
data_reg, buffer, bytecount));
if(bytecount & 1) {
@@ -544,7 +548,7 @@
static void
e100_ide_input_data (ide_drive_t *drive, void *buffer, unsigned int wcount)
{
- e100_atapi_input_bytes(drive, buffer, wcount << 2);
+ e100_atapi_read(drive, buffer, wcount << 2);
}
/*
@@ -553,7 +557,7 @@
static void
e100_ide_output_data (ide_drive_t *drive, void *buffer, unsigned int wcount)
{
- e100_atapi_output_bytes(drive, buffer, wcount << 2);
+ e100_atapi_write(drive, buffer, wcount << 2);
}
/*
@@ -570,11 +574,11 @@
case ideproc_ide_output_data:
e100_ide_input_data(drive, buffer, length);
break;
- case ideproc_atapi_input_bytes:
- e100_atapi_input_bytes(drive, buffer, length);
+ case ideproc_atapi_read:
+ e100_atapi_read(drive, buffer, length);
break;
- case ideproc_atapi_output_bytes:
- e100_atapi_output_bytes(drive, buffer, length);
+ case ideproc_atapi_write:
+ e100_atapi_write(drive, buffer, length);
break;
default:
printk("e100_ideproc: unsupported func %d!\n", func);
diff -urN linux-2.5.8/drivers/ide/ide-cd.c linux/drivers/ide/ide-cd.c
--- linux-2.5.8/drivers/ide/ide-cd.c Tue Apr 16 06:01:04 2002
+++ linux/drivers/ide/ide-cd.c Tue Apr 16 03:23:56 2002
@@ -791,7 +791,7 @@
ide_set_handler(drive, handler, timeout, cdrom_timer_expiry);
/* Send the command to the device. */
- atapi_output_bytes(drive, cmd, CDROM_PACKET_SIZE);
+ atapi_write(drive, cmd, CDROM_PACKET_SIZE);
return ide_started;
}
@@ -830,7 +830,7 @@
/* Read the data into the buffer. */
dest = info->buffer + info->nsectors_buffered * SECTOR_SIZE;
while (sectors_to_buffer > 0) {
- atapi_input_bytes (drive, dest, SECTOR_SIZE);
+ atapi_read(drive, dest, SECTOR_SIZE);
--sectors_to_buffer;
--sectors_to_transfer;
++info->nsectors_buffered;
@@ -840,7 +840,7 @@
/* Throw away any remaining data. */
while (sectors_to_transfer > 0) {
char dum[SECTOR_SIZE];
- atapi_input_bytes (drive, dum, sizeof (dum));
+ atapi_read(drive, dum, sizeof (dum));
--sectors_to_transfer;
}
}
@@ -866,7 +866,7 @@
and quit this request. */
while (len > 0) {
int dum = 0;
- atapi_output_bytes (drive, &dum, sizeof (dum));
+ atapi_write(drive, &dum, sizeof (dum));
len -= sizeof (dum);
}
} else if (ireason == 1) {
@@ -963,7 +963,7 @@
while (nskip > 0) {
/* We need to throw away a sector. */
char dum[SECTOR_SIZE];
- atapi_input_bytes (drive, dum, sizeof (dum));
+ atapi_read(drive, dum, SECTOR_SIZE);
--rq->current_nr_sectors;
--nskip;
@@ -994,7 +994,7 @@
/* Read this_transfer sectors
into the current buffer. */
while (this_transfer > 0) {
- atapi_input_bytes(drive, rq->buffer, SECTOR_SIZE);
+ atapi_read(drive, rq->buffer, SECTOR_SIZE);
rq->buffer += SECTOR_SIZE;
--rq->nr_sectors;
--rq->current_nr_sectors;
@@ -1290,13 +1290,14 @@
/* The drive wants to be written to. */
if ((ireason & 3) == 0) {
/* Transfer the data. */
- atapi_output_bytes (drive, pc->buffer, thislen);
+ atapi_write(drive, pc->buffer, thislen);
/* If we haven't moved enough data to satisfy the drive,
add some padding. */
while (len > thislen) {
int dum = 0;
- atapi_output_bytes (drive, &dum, sizeof (dum));
+
+ atapi_write(drive, &dum, sizeof (dum));
len -= sizeof (dum);
}
@@ -1307,15 +1308,14 @@
/* Same drill for reading. */
else if ((ireason & 3) == 2) {
-
/* Transfer the data. */
- atapi_input_bytes (drive, pc->buffer, thislen);
+ atapi_read(drive, pc->buffer, thislen);
/* If we haven't moved enough data to satisfy the drive,
add some padding. */
while (len > thislen) {
int dum = 0;
- atapi_input_bytes (drive, &dum, sizeof (dum));
+ atapi_read(drive, &dum, sizeof (dum));
len -= sizeof (dum);
}
@@ -1458,7 +1458,7 @@
and quit this request. */
while (len > 0) {
int dum = 0;
- atapi_output_bytes(drive, &dum, sizeof(dum));
+ atapi_write(drive, &dum, sizeof(dum));
len -= sizeof(dum);
}
} else {
@@ -1549,7 +1549,7 @@
this_transfer = MIN(sectors_to_transfer,rq->current_nr_sectors);
while (this_transfer > 0) {
- atapi_output_bytes(drive, rq->buffer, SECTOR_SIZE);
+ atapi_write(drive, rq->buffer, SECTOR_SIZE);
rq->buffer += SECTOR_SIZE;
--rq->nr_sectors;
--rq->current_nr_sectors;
diff -urN linux-2.5.8/drivers/ide/ide-disk.c linux/drivers/ide/ide-disk.c
--- linux-2.5.8/drivers/ide/ide-disk.c Tue Apr 16 06:01:07 2002
+++ linux/drivers/ide/ide-disk.c Tue Apr 16 05:38:16 2002
@@ -1051,7 +1051,6 @@
ide_add_setting(drive, "bios_head", SETTING_RW, -1, -1, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL);
ide_add_setting(drive, "bios_sect", SETTING_RW, -1, -1, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL);
ide_add_setting(drive, "address", SETTING_RW, HDIO_GET_ADDRESS, HDIO_SET_ADDRESS, TYPE_INTA, 0, 2, 1, 1, &drive->addressing, set_lba_addressing);
- ide_add_setting(drive, "bswap", SETTING_READ, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->bswap, NULL);
ide_add_setting(drive, "multcount", id ? SETTING_RW : SETTING_READ, HDIO_GET_MULTCOUNT, HDIO_SET_MULTCOUNT, TYPE_BYTE, 0, id ? id->max_multsect : 0, 1, 1, &drive->mult_count, set_multcount);
ide_add_setting(drive, "nowerr", SETTING_RW, HDIO_GET_NOWERR, HDIO_SET_NOWERR, TYPE_BYTE, 0, 1, 1, 1, &drive->nowerr, set_nowerr);
ide_add_setting(drive, "lun", SETTING_RW, -1, -1, TYPE_INT, 0, 7, 1, 1, &drive->lun, NULL);
@@ -1198,11 +1197,11 @@
if ((capacity >= (drive->bios_cyl * drive->bios_sect * drive->bios_head)) &&
(!drive->forced_geom) && drive->bios_sect && drive->bios_head)
drive->bios_cyl = (capacity / drive->bios_sect) / drive->bios_head;
- printk (KERN_INFO "%s: %ld sectors", drive->name, capacity);
+ printk(KERN_INFO "%s: %ld sectors", drive->name, capacity);
/* Give size in megabytes (MB), not mebibytes (MiB). */
/* We compute the exact rounded value, avoiding overflow. */
- printk (" (%ld MB)", (capacity - capacity/625 + 974)/1950);
+ printk(" (%ld MB)", (capacity - capacity/625 + 974)/1950);
/* Only print cache size when it was specified */
if (id->buf_size)
@@ -1213,7 +1212,7 @@
#ifdef CONFIG_BLK_DEV_IDEDMA
if (drive->using_dma)
(void) drive->channel->dmaproc(ide_dma_verbose, drive);
-#endif /* CONFIG_BLK_DEV_IDEDMA */
+#endif
printk("\n");
drive->mult_count = 0;
@@ -1223,15 +1222,17 @@
id->multsect_valid = id->multsect ? 1 : 0;
drive->mult_req = id->multsect_valid ? id->max_multsect : INITIAL_MULT_COUNT;
drive->special.b.set_multmode = drive->mult_req ? 1 : 0;
-#else /* original, pre IDE-NFG, per request of AC */
+#else
+ /* original, pre IDE-NFG, per request of AC */
drive->mult_req = INITIAL_MULT_COUNT;
if (drive->mult_req > id->max_multsect)
drive->mult_req = id->max_multsect;
if (drive->mult_req || ((id->multsect_valid & 1) && id->multsect))
drive->special.b.set_multmode = 1;
-#endif /* CONFIG_IDEDISK_MULTI_MODE */
+#endif
}
drive->no_io_32bit = id->dword_io ? 1 : 0;
+
if (drive->id->cfs_enable_2 & 0x3000)
write_cache(drive, (id->cfs_enable_2 & 0x3000));
probe_lba_addressing(drive, 1);
diff -urN linux-2.5.8/drivers/ide/ide-features.c linux/drivers/ide/ide-features.c
--- linux-2.5.8/drivers/ide/ide-features.c Mon Apr 15 08:53:44 2002
+++ linux/drivers/ide/ide-features.c Tue Apr 16 02:36:34 2002
@@ -130,8 +130,8 @@
__restore_flags(flags); /* local CPU only */
return 0;
}
- ata_input_data(drive, id, SECTOR_WORDS);
- (void) GET_STAT(); /* clear drive IRQ */
+ ata_read(drive, id, SECTOR_WORDS);
+ GET_STAT(); /* clear drive IRQ */
ide__sti(); /* local CPU only */
__restore_flags(flags); /* local CPU only */
ide_fix_driveid(id);
@@ -285,7 +285,7 @@
enable_irq(hwif->irq);
if (error) {
- (void) ide_dump_status(drive, "set_drive_speed_status", stat);
+ ide_dump_status(drive, "set_drive_speed_status", stat);
return error;
}
diff -urN linux-2.5.8/drivers/ide/ide-floppy.c linux/drivers/ide/ide-floppy.c
--- linux-2.5.8/drivers/ide/ide-floppy.c Mon Apr 15 08:53:44 2002
+++ linux/drivers/ide/ide-floppy.c Tue Apr 16 03:24:42 2002
@@ -717,7 +717,7 @@
return;
}
count = IDEFLOPPY_MIN (bio->bi_size - pc->b_count, bcount);
- atapi_input_bytes (drive, bio_data(bio) + pc->b_count, count);
+ atapi_read(drive, bio_data(bio) + pc->b_count, count);
bcount -= count; pc->b_count += count;
}
}
@@ -744,7 +744,7 @@
return;
}
count = IDEFLOPPY_MIN (pc->b_count, bcount);
- atapi_output_bytes (drive, pc->b_data, count);
+ atapi_write(drive, pc->b_data, count);
bcount -= count; pc->b_data += count; pc->b_count -= count;
}
}
@@ -979,12 +979,12 @@
}
if (test_bit (PC_WRITING, &pc->flags)) {
if (pc->buffer != NULL)
- atapi_output_bytes (drive,pc->current_position,bcount.all); /* Write the current buffer */
+ atapi_write(drive,pc->current_position,bcount.all); /* Write the current buffer */
else
idefloppy_output_buffers (drive, pc, bcount.all);
} else {
if (pc->buffer != NULL)
- atapi_input_bytes (drive,pc->current_position,bcount.all); /* Read the current buffer */
+ atapi_read(drive,pc->current_position,bcount.all); /* Read the current buffer */
else
idefloppy_input_buffers (drive, pc, bcount.all);
}
@@ -1020,7 +1020,7 @@
BUG_ON(HWGROUP(drive)->handler);
ide_set_handler (drive, &idefloppy_pc_intr, IDEFLOPPY_WAIT_CMD, NULL); /* Set the interrupt routine */
- atapi_output_bytes (drive, floppy->pc->c, 12); /* Send the actual packet */
+ atapi_write(drive, floppy->pc->c, 12); /* Send the actual packet */
return ide_started;
}
@@ -1042,7 +1042,7 @@
{
idefloppy_floppy_t *floppy = drive->driver_data;
- atapi_output_bytes (drive, floppy->pc->c, 12); /* Send the actual packet */
+ atapi_write(drive, floppy->pc->c, 12); /* Send the actual packet */
return IDEFLOPPY_WAIT_CMD; /* Timeout for the packet command */
}
diff -urN linux-2.5.8/drivers/ide/ide-probe.c linux/drivers/ide/ide-probe.c
--- linux-2.5.8/drivers/ide/ide-probe.c Tue Apr 16 06:01:07 2002
+++ linux/drivers/ide/ide-probe.c Tue Apr 16 03:48:14 2002
@@ -57,9 +57,18 @@
printk(KERN_WARNING "(ide-probe::do_identify) Out of memory.\n");
goto err_kmalloc;
}
- /* read 512 bytes of id info */
+
+ /* Read 512 bytes of id info.
+ *
+ * Please note that it is well known that some *very* old drives are
+ * able to provide only 256 of them, since this was the amount read by
+ * DOS.
+ *
+ * However let's try to get away with this...
+ */
+
#if 1
- ata_input_data(drive, id, SECTOR_WORDS); /* read 512 bytes of id info */
+ ata_read(drive, id, SECTOR_WORDS);
#else
{
unsigned long *ptr = (unsigned long *)id ;
@@ -580,10 +589,10 @@
__restore_flags(flags); /* local CPU only */
for (unit = 0; unit < MAX_DRIVES; ++unit) {
ide_drive_t *drive = &hwif->drives[unit];
- if (drive->present) {
- ide_tuneproc_t *tuneproc = drive->channel->tuneproc;
- if (tuneproc != NULL && drive->autotune == 1)
- tuneproc(drive, 255); /* auto-tune PIO mode */
+
+ if (drive->present && (drive->autotune == 1)) {
+ if (drive->channel->tuneproc != NULL)
+ drive->channel->tuneproc(drive, 255); /* auto-tune PIO mode */
}
}
}
diff -urN linux-2.5.8/drivers/ide/ide-proc.c linux/drivers/ide/ide-proc.c
--- linux-2.5.8/drivers/ide/ide-proc.c Mon Apr 15 08:53:44 2002
+++ linux/drivers/ide/ide-proc.c Tue Apr 16 04:05:19 2002
@@ -422,7 +422,6 @@
static void create_proc_ide_drives(struct ata_channel *hwif)
{
int d;
- struct proc_dir_entry *ent;
struct proc_dir_entry *parent = hwif->proc;
char name[64];
diff -urN linux-2.5.8/drivers/ide/ide-tape.c linux/drivers/ide/ide-tape.c
--- linux-2.5.8/drivers/ide/ide-tape.c Mon Apr 15 08:53:44 2002
+++ linux/drivers/ide/ide-tape.c Tue Apr 16 03:25:29 2002
@@ -1503,9 +1503,9 @@
idetape_discard_data (drive, bcount);
return;
}
-#endif /* IDETAPE_DEBUG_BUGS */
+#endif
count = min(bio->bi_size - pc->b_count, bcount);
- atapi_input_bytes (drive, bio_data(bio) + pc->b_count, count);
+ atapi_read(drive, bio_data(bio) + pc->b_count, count);
bcount -= count;
pc->b_count += bio->bi_size;
if (pc->b_count == bio->bi_size) {
@@ -1530,7 +1530,7 @@
}
#endif /* IDETAPE_DEBUG_BUGS */
count = min(pc->b_count, bcount);
- atapi_output_bytes (drive, bio_data(bio), count);
+ atapi_write(drive, bio_data(bio), count);
bcount -= count;
pc->b_data += count;
pc->b_count -= count;
@@ -2169,12 +2169,12 @@
if (pc->bio != NULL)
idetape_output_buffers (drive, pc, bcount.all);
else
- atapi_output_bytes (drive,pc->current_position,bcount.all); /* Write the current buffer */
+ atapi_write(drive,pc->current_position,bcount.all); /* Write the current buffer */
} else {
if (pc->bio != NULL)
idetape_input_buffers (drive, pc, bcount.all);
else
- atapi_input_bytes (drive,pc->current_position,bcount.all); /* Read the current buffer */
+ atapi_read(drive,pc->current_position,bcount.all); /* Read the current buffer */
}
pc->actually_transferred += bcount.all; /* Update the current position */
pc->current_position+=bcount.all;
@@ -2259,7 +2259,7 @@
tape->cmd_start_time = jiffies;
BUG_ON(HWGROUP(drive)->handler);
ide_set_handler(drive, &idetape_pc_intr, IDETAPE_WAIT_CMD, NULL); /* Set the interrupt routine */
- atapi_output_bytes (drive,pc->c,12); /* Send the actual packet */
+ atapi_write(drive,pc->c,12); /* Send the actual packet */
return ide_started;
}
diff -urN linux-2.5.8/drivers/ide/ide-taskfile.c linux/drivers/ide/ide-taskfile.c
--- linux-2.5.8/drivers/ide/ide-taskfile.c Tue Apr 16 06:01:04 2002
+++ linux/drivers/ide/ide-taskfile.c Tue Apr 16 05:38:53 2002
@@ -1,4 +1,5 @@
/*
+ * Copyright (C) 2002 Marcin Dalecki <martin@dalecki.de>
* Copyright (C) 2000 Michael Cornwell <cornwell@acm.org>
* Copyright (C) 2000 Andre Hedrick <andre@linux-ide.org>
*
@@ -58,15 +59,9 @@
bio_kunmap_irq(to, flags);
}
-static void bswap_data (void *buffer, int wcount)
-{
- u16 *p = buffer;
-
- while (wcount--) {
- *p = *p << 8 | *p >> 8; p++;
- *p = *p << 8 | *p >> 8; p++;
- }
-}
+/*
+ * Data transfer functions for polled IO.
+ */
#if SUPPORT_VLB_SYNC
/*
@@ -76,30 +71,88 @@
* of the sector count register location, with interrupts disabled
* to ensure that the reads all happen together.
*/
-static inline void task_vlb_sync(ide_drive_t *drive)
+static void ata_read_vlb(struct ata_device *drive, void *buffer, unsigned int wcount)
{
- ide_ioreg_t port = IDE_NSECTOR_REG;
+ unsigned long flags;
- IN_BYTE(port);
- IN_BYTE(port);
- IN_BYTE(port);
+ __save_flags(flags); /* local CPU only */
+ __cli(); /* local CPU only */
+ IN_BYTE(IDE_NSECTOR_REG);
+ IN_BYTE(IDE_NSECTOR_REG);
+ IN_BYTE(IDE_NSECTOR_REG);
+ insl(IDE_DATA_REG, buffer, wcount);
+ __restore_flags(flags); /* local CPU only */
+}
+
+static void ata_write_vlb(struct ata_device *drive, void *buffer, unsigned int wcount)
+{
+ unsigned long flags;
+
+ __save_flags(flags); /* local CPU only */
+ __cli(); /* local CPU only */
+ IN_BYTE(IDE_NSECTOR_REG);
+ IN_BYTE(IDE_NSECTOR_REG);
+ IN_BYTE(IDE_NSECTOR_REG);
+ outsl(IDE_DATA_REG, buffer, wcount);
+ __restore_flags(flags); /* local CPU only */
}
#endif
+static void ata_read_32(struct ata_device *drive, void *buffer, unsigned int wcount)
+{
+ insl(IDE_DATA_REG, buffer, wcount);
+}
+
+static void ata_write_32(struct ata_device *drive, void *buffer, unsigned int wcount)
+{
+ outsl(IDE_DATA_REG, buffer, wcount);
+}
+
+#if SUPPORT_SLOW_DATA_PORTS
+static void ata_read_slow(struct ata_device *drive, void *buffer, unsigned int wcount)
+{
+ unsigned short *ptr = (unsigned short *) buffer;
+
+ while (wcount--) {
+ *ptr++ = inw_p(IDE_DATA_REG);
+ *ptr++ = inw_p(IDE_DATA_REG);
+ }
+}
+
+static void ata_write_slow(struct ata_device *drive, void *buffer, unsigned int wcount)
+{
+ unsigned short *ptr = (unsigned short *) buffer;
+
+ while (wcount--) {
+ outw_p(*ptr++, IDE_DATA_REG);
+ outw_p(*ptr++, IDE_DATA_REG);
+ }
+}
+#endif
+
+static void ata_read_16(ide_drive_t *drive, void *buffer, unsigned int wcount)
+{
+ insw(IDE_DATA_REG, buffer, wcount<<1);
+}
+
+static void ata_write_16(ide_drive_t *drive, void *buffer, unsigned int wcount)
+{
+ outsw(IDE_DATA_REG, buffer, wcount<<1);
+}
+
/*
- * This is used for most PIO data transfers *from* the IDE interface
+ * This is used for most PIO data transfers *from* the device.
*/
-void ata_input_data(ide_drive_t *drive, void *buffer, unsigned int wcount)
+void ata_read(ide_drive_t *drive, void *buffer, unsigned int wcount)
{
- byte io_32bit;
+ int io_32bit;
/*
- * first check if this controller has defined a special function
- * for handling polled ide transfers
+ * First check if this controller has defined a special function
+ * for handling polled ide transfers.
*/
-
- if (drive->channel->ideproc) {
- drive->channel->ideproc(ideproc_ide_input_data, drive, buffer, wcount);
+ if (drive->channel->ata_read) {
+ drive->channel->ata_read(drive, buffer, wcount);
return;
}
@@ -107,39 +160,30 @@
if (io_32bit) {
#if SUPPORT_VLB_SYNC
- if (io_32bit & 2) {
- unsigned long flags;
- __save_flags(flags); /* local CPU only */
- __cli(); /* local CPU only */
- task_vlb_sync(drive);
- insl(IDE_DATA_REG, buffer, wcount);
- __restore_flags(flags); /* local CPU only */
- } else
+ if (io_32bit & 2)
+ ata_read_vlb(drive, buffer, wcount);
+ else
#endif
- insl(IDE_DATA_REG, buffer, wcount);
+ ata_read_32(drive, buffer, wcount);
} else {
#if SUPPORT_SLOW_DATA_PORTS
- if (drive->slow) {
- unsigned short *ptr = (unsigned short *) buffer;
- while (wcount--) {
- *ptr++ = inw_p(IDE_DATA_REG);
- *ptr++ = inw_p(IDE_DATA_REG);
- }
- } else
+ if (drive->slow)
+ ata_read_slow(drive, buffer, wcount);
+ else
#endif
- insw(IDE_DATA_REG, buffer, wcount<<1);
+ ata_read_16(drive, buffer, wcount);
}
}
/*
- * This is used for most PIO data transfers *to* the IDE interface
+ * This is used for most PIO data transfers *to* the device interface.
*/
-void ata_output_data(ide_drive_t *drive, void *buffer, unsigned int wcount)
+void ata_write(ide_drive_t *drive, void *buffer, unsigned int wcount)
{
- byte io_32bit;
+ int io_32bit;
- if (drive->channel->ideproc) {
- drive->channel->ideproc(ideproc_ide_output_data, drive, buffer, wcount);
+ if (drive->channel->ata_write) {
+ drive->channel->ata_write(drive, buffer, wcount);
return;
}
@@ -147,27 +191,18 @@
if (io_32bit) {
#if SUPPORT_VLB_SYNC
- if (io_32bit & 2) {
- unsigned long flags;
- __save_flags(flags); /* local CPU only */
- __cli(); /* local CPU only */
- task_vlb_sync(drive);
- outsl(IDE_DATA_REG, buffer, wcount);
- __restore_flags(flags); /* local CPU only */
- } else
+ if (io_32bit & 2)
+ ata_write_vlb(drive, buffer, wcount);
+ else
#endif
- outsl(IDE_DATA_REG, buffer, wcount);
+ ata_write_32(drive, buffer, wcount);
} else {
#if SUPPORT_SLOW_DATA_PORTS
- if (drive->slow) {
- unsigned short *ptr = (unsigned short *) buffer;
- while (wcount--) {
- outw_p(*ptr++, IDE_DATA_REG);
- outw_p(*ptr++, IDE_DATA_REG);
- }
- } else
+ if (drive->slow)
+ ata_write_slow(drive, buffer, wcount);
+ else
#endif
- outsw(IDE_DATA_REG, buffer, wcount<<1);
+ ata_write_16(drive, buffer, wcount<<1);
}
}
@@ -178,10 +213,10 @@
* so if an odd bytecount is specified, be sure that there's at least one
* extra byte allocated for the buffer.
*/
-void atapi_input_bytes (ide_drive_t *drive, void *buffer, unsigned int bytecount)
+void atapi_read(ide_drive_t *drive, void *buffer, unsigned int bytecount)
{
- if (drive->channel->ideproc) {
- drive->channel->ideproc(ideproc_atapi_input_bytes, drive, buffer, bytecount);
+ if (drive->channel->atapi_read) {
+ drive->channel->atapi_read(drive, buffer, bytecount);
return;
}
@@ -193,15 +228,15 @@
return;
}
#endif
- ata_input_data (drive, buffer, bytecount / 4);
+ ata_read(drive, buffer, bytecount / 4);
if ((bytecount & 0x03) >= 2)
- insw (IDE_DATA_REG, ((byte *)buffer) + (bytecount & ~0x03), 1);
+ insw(IDE_DATA_REG, ((byte *)buffer) + (bytecount & ~0x03), 1);
}
-void atapi_output_bytes (ide_drive_t *drive, void *buffer, unsigned int bytecount)
+void atapi_write(ide_drive_t *drive, void *buffer, unsigned int bytecount)
{
- if (drive->channel->ideproc) {
- drive->channel->ideproc(ideproc_atapi_output_bytes, drive, buffer, bytecount);
+ if (drive->channel->atapi_write) {
+ drive->channel->atapi_write(drive, buffer, bytecount);
return;
}
@@ -213,29 +248,11 @@
return;
}
#endif
- ata_output_data (drive, buffer, bytecount / 4);
+ ata_write(drive, buffer, bytecount / 4);
if ((bytecount & 0x03) >= 2)
outsw(IDE_DATA_REG, ((byte *)buffer) + (bytecount & ~0x03), 1);
}
-void taskfile_input_data(ide_drive_t *drive, void *buffer, unsigned int wcount)
-{
- ata_input_data(drive, buffer, wcount);
- if (drive->bswap)
- bswap_data(buffer, wcount);
-}
-
-void taskfile_output_data(ide_drive_t *drive, void *buffer, unsigned int wcount)
-{
- if (drive->bswap) {
- bswap_data(buffer, wcount);
- ata_output_data(drive, buffer, wcount);
- bswap_data(buffer, wcount);
- } else {
- ata_output_data(drive, buffer, wcount);
- }
-}
-
/*
* Needed for PCI irq sharing
*/
@@ -311,8 +328,6 @@
static ide_startstop_t task_mulout_intr (ide_drive_t *drive)
{
byte stat = GET_STAT();
- /* FIXME: this should go possible as well */
- byte io_32bit = drive->io_32bit;
struct request *rq = &HWGROUP(drive)->wrq;
ide_hwgroup_t *hwgroup = HWGROUP(drive);
int mcount = drive->mult_count;
@@ -378,14 +393,13 @@
}
/*
- * Ok, we're all setup for the interrupt
- * re-entering us on the last transfer.
+ * Ok, we're all setup for the interrupt re-entering us on the
+ * last transfer.
*/
- taskfile_output_data(drive, buffer, nsect * SECTOR_WORDS);
+ ata_write(drive, buffer, nsect * SECTOR_WORDS);
bio_kunmap_irq(buffer, &flags);
} while (mcount);
- drive->io_32bit = io_32bit;
rq->errors = 0;
if (hwgroup->handler == NULL)
ide_set_handler(drive, task_mulout_intr, WAIT_CMD, NULL);
@@ -542,7 +556,6 @@
static ide_startstop_t task_in_intr (ide_drive_t *drive)
{
byte stat = GET_STAT();
- byte io_32bit = drive->io_32bit;
struct request *rq = HWGROUP(drive)->rq;
char *pBuf = NULL;
unsigned long flags;
@@ -561,10 +574,8 @@
pBuf = ide_map_rq(rq, &flags);
DTF("Read: %p, rq->current_nr_sectors: %d\n", pBuf, (int) rq->current_nr_sectors);
- drive->io_32bit = 0;
- taskfile_input_data(drive, pBuf, SECTOR_WORDS);
+ ata_read(drive, pBuf, SECTOR_WORDS);
ide_unmap_rq(rq, pBuf, &flags);
- drive->io_32bit = io_32bit;
if (--rq->current_nr_sectors <= 0) {
/* (hs): swapped next 2 lines */
@@ -597,7 +608,7 @@
unsigned long flags;
char *buf = ide_map_rq(rq, &flags);
/* For Write_sectors we need to stuff the first sector */
- taskfile_output_data(drive, buf, SECTOR_WORDS);
+ ata_write(drive, buf, SECTOR_WORDS);
rq->current_nr_sectors--;
ide_unmap_rq(rq, buf, &flags);
} else {
@@ -613,8 +624,6 @@
static ide_startstop_t task_out_intr(ide_drive_t *drive)
{
byte stat = GET_STAT();
- /* FIXME: this should go possible as well */
- byte io_32bit = drive->io_32bit;
struct request *rq = HWGROUP(drive)->rq;
char *pBuf = NULL;
unsigned long flags;
@@ -631,9 +640,8 @@
pBuf = ide_map_rq(rq, &flags);
DTF("write: %p, rq->current_nr_sectors: %d\n", pBuf, (int) rq->current_nr_sectors);
- taskfile_output_data(drive, pBuf, SECTOR_WORDS);
+ ata_write(drive, pBuf, SECTOR_WORDS);
ide_unmap_rq(rq, pBuf, &flags);
- drive->io_32bit = io_32bit;
rq->errors = 0;
rq->current_nr_sectors--;
}
@@ -649,8 +657,6 @@
{
unsigned int msect, nsect;
byte stat = GET_STAT();
- /* FIXME: this should go possible as well */
- byte io_32bit = drive->io_32bit;
struct request *rq = HWGROUP(drive)->rq;
char *pBuf = NULL;
unsigned long flags;
@@ -676,10 +682,8 @@
DTF("Multiread: %p, nsect: %d , rq->current_nr_sectors: %d\n",
pBuf, nsect, rq->current_nr_sectors);
- drive->io_32bit = 0;
- taskfile_input_data(drive, pBuf, nsect * SECTOR_WORDS);
+ ata_read(drive, pBuf, nsect * SECTOR_WORDS);
ide_unmap_rq(rq, pBuf, &flags);
- drive->io_32bit = io_32bit;
rq->errors = 0;
rq->current_nr_sectors -= nsect;
msect -= nsect;
@@ -1025,12 +1029,11 @@
}
EXPORT_SYMBOL(drive_is_ready);
-EXPORT_SYMBOL(ata_input_data);
-EXPORT_SYMBOL(ata_output_data);
-EXPORT_SYMBOL(atapi_input_bytes);
-EXPORT_SYMBOL(atapi_output_bytes);
-EXPORT_SYMBOL(taskfile_input_data);
-EXPORT_SYMBOL(taskfile_output_data);
+
+EXPORT_SYMBOL(ata_read);
+EXPORT_SYMBOL(ata_write);
+EXPORT_SYMBOL(atapi_read);
+EXPORT_SYMBOL(atapi_write);
EXPORT_SYMBOL(ata_taskfile);
EXPORT_SYMBOL(recal_intr);
diff -urN linux-2.5.8/drivers/ide/ide.c linux/drivers/ide/ide.c
--- linux-2.5.8/drivers/ide/ide.c Tue Apr 16 06:01:07 2002
+++ linux/drivers/ide/ide.c Tue Apr 16 05:38:37 2002
@@ -383,7 +383,7 @@
spin_lock_irqsave(&ide_lock, flags);
if ((jiffies - ar->ar_time > ATA_AR_MAX_TURNAROUND) && drive->queue_depth > 1) {
- printk("%s: exceeded max command turn-around time (%d seconds)\n", drive->name, ATA_AR_MAX_TURNAROUND / HZ);
+ printk(KERN_INFO "%s: exceeded max command turn-around time (%d seconds)\n", drive->name, ATA_AR_MAX_TURNAROUND / HZ);
drive->queue_depth >>= 1;
}
@@ -474,7 +474,7 @@
spin_unlock_irqrestore(&ide_lock, flags);
}
-static void ata_pre_reset (ide_drive_t *drive)
+static void ata_pre_reset(ide_drive_t *drive)
{
if (ata_ops(drive) && ata_ops(drive)->pre_reset)
ata_ops(drive)->pre_reset(drive);
@@ -528,10 +528,9 @@
printk("%s: ata_special: 0x%02x\n", drive->name, s->all);
#endif
if (s->b.set_tune) {
- ide_tuneproc_t *tuneproc = drive->channel->tuneproc;
s->b.set_tune = 0;
- if (tuneproc != NULL)
- tuneproc(drive, drive->tune_req);
+ if (drive->channel->tuneproc != NULL)
+ drive->channel->tuneproc(drive, drive->tune_req);
} else if (drive->driver != NULL) {
if (ata_ops(drive)->special)
return ata_ops(drive)->special(drive);
@@ -899,23 +898,24 @@
}
/*
- * 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 gets invoked in response to a drive unexpectedly having its DRQ_STAT
+ * bit set. As an alternative to resetting the drive, it tries to clear the
+ * condition by reading a sector's worth of data from the drive. Of course,
* this may not help if the drive is *waiting* for data from *us*.
*/
static void try_to_flush_leftover_data (ide_drive_t *drive)
{
- int i = (drive->mult_count ? drive->mult_count : 1) * SECTOR_WORDS;
+ int i = (drive->mult_count ? drive->mult_count : 1);
if (drive->type != ATA_DISK)
return;
+
while (i > 0) {
- u32 buffer[16];
- unsigned int wcount = (i > 16) ? 16 : i;
- i -= wcount;
- ata_input_data (drive, buffer, wcount);
+ u32 buffer[SECTOR_WORDS];
+ unsigned int count = (i > 1) ? 1 : i;
+
+ ata_read(drive, buffer, count * SECTOR_WORDS);
+ i -= count;
}
}
@@ -1002,16 +1002,18 @@
static ide_startstop_t drive_cmd_intr (ide_drive_t *drive)
{
struct request *rq = HWGROUP(drive)->rq;
- byte *args = (byte *) rq->buffer;
- byte stat = GET_STAT();
+ u8 *args = rq->buffer;
+ u8 stat = GET_STAT();
int retries = 10;
ide__sti(); /* local CPU only */
if ((stat & DRQ_STAT) && args && args[3]) {
- byte io_32bit = drive->io_32bit;
+ int io_32bit = drive->io_32bit;
+
drive->io_32bit = 0;
- ata_input_data(drive, &args[4], args[3] * SECTOR_WORDS);
+ ata_read(drive, &args[4], args[3] * SECTOR_WORDS);
drive->io_32bit = io_32bit;
+
while (((stat = GET_STAT()) & BUSY_STAT) && retries--)
udelay(100);
}
@@ -1019,6 +1021,7 @@
if (!OK_STAT(stat, READY_STAT, BAD_STAT))
return ide_error(drive, "drive_cmd", stat); /* calls ide_end_drive_cmd */
ide_end_drive_cmd (drive, stat, GET_ERR());
+
return ide_stopped;
}
@@ -1266,31 +1269,26 @@
/*
* Select the next drive which will be serviced.
*/
-static inline ide_drive_t *choose_drive(ide_hwgroup_t *hwgroup)
+static ide_drive_t *choose_drive(ide_hwgroup_t *hwgroup)
{
- ide_drive_t *drive, *best;
+ ide_drive_t *tmp;
+ ide_drive_t *drive = NULL;
+ unsigned long sleep = 0;
- best = NULL;
- drive = hwgroup->drive;
+ tmp = hwgroup->drive;
do {
- if (!list_empty(&drive->queue.queue_head)
- && (!drive->PADAM_sleep || time_after_eq(drive->PADAM_sleep, jiffies))) {
- if (!best
- || (drive->PADAM_sleep && (!best->PADAM_sleep || time_after(best->PADAM_sleep, drive->PADAM_sleep)))
- || (!best->PADAM_sleep && time_after(best->PADAM_service_start + 2 * best->PADAM_service_time, drive->PADAM_service_start + 2 * drive->PADAM_service_time)))
+ if (!list_empty(&tmp->queue.queue_head)
+ && (!tmp->PADAM_sleep || time_after_eq(tmp->PADAM_sleep, jiffies))) {
+ if (!drive
+ || (tmp->PADAM_sleep && (!drive->PADAM_sleep || time_after(drive->PADAM_sleep, tmp->PADAM_sleep)))
+ || (!drive->PADAM_sleep && time_after(drive->PADAM_service_start + 2 * drive->PADAM_service_time, tmp->PADAM_service_start + 2 * tmp->PADAM_service_time)))
{
- if (!blk_queue_plugged(&drive->queue))
- best = drive;
+ if (!blk_queue_plugged(&tmp->queue))
+ drive = tmp;
}
}
- } while ((drive = drive->next) != hwgroup->drive);
- return best;
-}
-
-static ide_drive_t *ide_choose_drive(ide_hwgroup_t *hwgroup)
-{
- ide_drive_t *drive = choose_drive(hwgroup);
- unsigned long sleep = 0;
+ tmp = tmp->next;
+ } while (tmp != hwgroup->drive);
if (drive)
return drive;
@@ -1495,7 +1493,7 @@
/*
* will clear IDE_BUSY, if appropriate
*/
- if ((drive = ide_choose_drive(hwgroup)) == NULL)
+ if ((drive = choose_drive(hwgroup)) == NULL)
break;
hwif = drive->channel;
@@ -2298,7 +2296,10 @@
channel->maskproc = old_hwif.maskproc;
channel->quirkproc = old_hwif.quirkproc;
channel->rwproc = old_hwif.rwproc;
- channel->ideproc = old_hwif.ideproc;
+ channel->ata_read = old_hwif.ata_read;
+ channel->ata_write = old_hwif.ata_write;
+ channel->atapi_read = old_hwif.atapi_read;
+ channel->atapi_write = old_hwif.atapi_write;
channel->dmaproc = old_hwif.dmaproc;
channel->busproc = old_hwif.busproc;
channel->bus_state = old_hwif.bus_state;
@@ -2565,13 +2566,17 @@
return 0;
}
-static int set_io_32bit(ide_drive_t *drive, int arg)
+static int set_io_32bit(struct ata_device *drive, int arg)
{
+ if (drive->no_io_32bit)
+ return -EIO;
+
drive->io_32bit = arg;
#ifdef CONFIG_BLK_DEV_DTC2278
if (drive->channel->chipset == ide_dtc2278)
drive->channel->drives[!drive->select.b.unit].io_32bit = arg;
-#endif /* CONFIG_BLK_DEV_DTC2278 */
+#endif
+
return 0;
}
@@ -3018,8 +3023,6 @@
* "hdx=slow" : insert a huge pause after each access to the data
* port. Should be used only as a last resort.
*
- * "hdx=swapdata" : when the drive is a disk, byte swap all data
- * "hdx=bswap" : same as above..........
* "hdxlun=xx" : set the drive last logical unit.
* "hdx=flash" : allows for more than one ata_flash disk to be
* registered. In most cases, only one device
@@ -3127,8 +3130,7 @@
if (!strncmp(s, "hd", 2) && s[2] >= 'a' && s[2] <= max_drive) {
const char *hd_words[] = {"none", "noprobe", "nowerr", "cdrom",
"serialize", "autotune", "noautotune",
- "slow", "swapdata", "bswap", "flash",
- "remap", "noremap", "scsi", NULL};
+ "slow", "flash", "remap", "noremap", "scsi", NULL};
unit = s[2] - 'a';
hw = unit / MAX_DRIVES;
unit = unit % MAX_DRIVES;
@@ -3178,20 +3180,16 @@
case -8: /* "slow" */
drive->slow = 1;
goto done;
- case -9: /* "swapdata" or "bswap" */
- case -10:
- drive->bswap = 1;
- goto done;
- case -11: /* "flash" */
+ case -9: /* "flash" */
drive->ata_flash = 1;
goto done;
- case -12: /* "remap" */
+ case -10: /* "remap" */
drive->remap_0_to_1 = 1;
goto done;
- case -13: /* "noremap" */
+ case -11: /* "noremap" */
drive->remap_0_to_1 = 2;
goto done;
- case -14: /* "scsi" */
+ case -12: /* "scsi" */
#if defined(CONFIG_BLK_DEV_IDESCSI) && defined(CONFIG_SCSI)
drive->scsi = 1;
goto done;
diff -urN linux-2.5.8/drivers/ide/pdc202xx.c linux/drivers/ide/pdc202xx.c
--- linux-2.5.8/drivers/ide/pdc202xx.c Mon Apr 15 08:53:44 2002
+++ linux/drivers/ide/pdc202xx.c Tue Apr 16 05:39:06 2002
@@ -1270,9 +1270,10 @@
#ifdef CONFIG_PDC202XX_32_UNMASK
hwif->drives[0].io_32bit = 1;
hwif->drives[1].io_32bit = 1;
+
hwif->drives[0].unmask = 1;
hwif->drives[1].unmask = 1;
-#endif /* CONFIG_PDC202XX_32_UNMASK */
+#endif
#ifdef CONFIG_BLK_DEV_IDEDMA
if (hwif->dma_base) {
@@ -1285,9 +1286,9 @@
hwif->drives[1].autotune = 1;
hwif->autodma = 0;
}
-#else /* !CONFIG_BLK_DEV_IDEDMA */
+#else
hwif->drives[0].autotune = 1;
hwif->drives[1].autotune = 1;
hwif->autodma = 0;
-#endif /* CONFIG_BLK_DEV_IDEDMA */
+#endif
}
diff -urN linux-2.5.8/drivers/ide/pdc4030.c linux/drivers/ide/pdc4030.c
--- linux-2.5.8/drivers/ide/pdc4030.c Tue Apr 16 06:01:07 2002
+++ linux/drivers/ide/pdc4030.c Tue Apr 16 02:59:10 2002
@@ -183,7 +183,7 @@
"%s: Failed Promise read config!\n",hwif->name);
return 0;
}
- ata_input_data(drive, &ident, SECTOR_WORDS);
+ ata_read(drive, &ident, SECTOR_WORDS);
if (ident.id[1] != 'P' || ident.id[0] != 'T') {
return 0;
}
@@ -332,7 +332,7 @@
nsect = sectors_avail;
sectors_avail -= nsect;
to = bio_kmap_irq(rq->bio, &flags) + ide_rq_offset(rq);
- ata_input_data(drive, to, nsect * SECTOR_WORDS);
+ ata_read(drive, to, nsect * SECTOR_WORDS);
#ifdef DEBUG_READ
printk(KERN_DEBUG "%s: promise_read: sectors(%ld-%ld), "
"buf=0x%08lx, rem=%ld\n", drive->name, rq->sector,
@@ -460,7 +460,7 @@
* Ok, we're all setup for the interrupt
* re-entering us on the last transfer.
*/
- taskfile_output_data(drive, buffer, nsect<<7);
+ ata_write(drive, buffer, nsect << 7);
bio_kunmap_irq(buffer, &flags);
} while (mcount);
diff -urN linux-2.5.8/drivers/scsi/ide-scsi.c linux/drivers/scsi/ide-scsi.c
--- linux-2.5.8/drivers/scsi/ide-scsi.c Mon Apr 15 08:53:51 2002
+++ linux/drivers/scsi/ide-scsi.c Tue Apr 16 03:39:25 2002
@@ -140,7 +140,7 @@
}
count = min(pc->sg->length - pc->b_count, bcount);
buf = page_address(pc->sg->page) + pc->sg->offset;
- atapi_input_bytes (drive, buf + pc->b_count, count);
+ atapi_read(drive, buf + pc->b_count, count);
bcount -= count; pc->b_count += count;
if (pc->b_count == pc->sg->length) {
pc->sg++;
@@ -162,7 +162,7 @@
}
count = min(pc->sg->length - pc->b_count, bcount);
buf = page_address(pc->sg->page) + pc->sg->offset;
- atapi_output_bytes (drive, buf + pc->b_count, count);
+ atapi_write(drive, buf + pc->b_count, count);
bcount -= count; pc->b_count += count;
if (pc->b_count == pc->sg->length) {
pc->sg++;
@@ -363,7 +363,7 @@
if (pc->sg)
idescsi_input_buffers(drive, pc, temp);
else
- atapi_input_bytes(drive, pc->current_position, temp);
+ atapi_read(drive, pc->current_position, temp);
printk(KERN_ERR "ide-scsi: transferred %d of %d bytes\n", temp, bcount);
}
pc->actually_transferred += temp;
@@ -382,13 +382,13 @@
if (pc->sg)
idescsi_input_buffers (drive, pc, bcount);
else
- atapi_input_bytes (drive,pc->current_position,bcount);
+ atapi_read(drive,pc->current_position,bcount);
} else {
set_bit(PC_WRITING, &pc->flags);
if (pc->sg)
idescsi_output_buffers (drive, pc, bcount);
else
- atapi_output_bytes (drive,pc->current_position,bcount);
+ atapi_write(drive,pc->current_position,bcount);
}
pc->actually_transferred+=bcount; /* Update the current position */
pc->current_position+=bcount;
@@ -414,7 +414,7 @@
return ide_stopped;
}
ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), NULL); /* Set the interrupt routine */
- atapi_output_bytes (drive, scsi->pc->c, 12); /* Send the actual packet */
+ atapi_write(drive, scsi->pc->c, 12); /* Send the actual packet */
return ide_started;
}
diff -urN linux-2.5.8/include/linux/ide.h linux/include/linux/ide.h
--- linux-2.5.8/include/linux/ide.h Tue Apr 16 06:01:07 2002
+++ linux/include/linux/ide.h Tue Apr 16 05:44:28 2002
@@ -313,9 +313,11 @@
#define IDE_CUR_AR(drive) (HWGROUP((drive))->rq->special)
struct ide_settings_s;
-
-typedef struct ide_drive_s {
- struct ata_channel *channel; /* parent pointer to the channel we are attached to */
+/* structure describing an ATA/ATAPI device */
+typedef
+struct ata_device {
+ struct ata_channel * channel;
+ char name[6]; /* device name */
unsigned int usage; /* current "open()" count for drive */
char type; /* distingiush different devices: disk, cdrom, tape, floppy, ... */
@@ -324,11 +326,11 @@
* could move this to the channel and many sync problems would
* magically just go away.
*/
- request_queue_t queue; /* per device request queue */
+ request_queue_t queue; /* per device request queue */
- struct list_head free_req; /* free ata requests */
+ struct list_head free_req; /* free ata requests */
- struct ide_drive_s *next; /* circular list of hwgroup drives */
+ struct ata_device *next; /* circular list of hwgroup drives */
/* Those are directly injected jiffie values. They should go away and
* we should use generic timers instead!!!
@@ -346,8 +348,6 @@
byte retry_pio; /* retrying dma capable host in pio */
byte state; /* retry state */
byte unmask; /* flag: okay to unmask other irqs */
- byte slow; /* flag: slow data port */
- byte bswap; /* flag: byte swap data */
byte dsc_overlap; /* flag: DSC overlap */
unsigned waiting_for_dma: 1; /* dma currently in progress */
@@ -359,7 +359,6 @@
unsigned removable : 1; /* 1 if need to do check_media_change */
unsigned forced_geom : 1; /* 1 if hdx=c,h,s was given at boot */
unsigned no_unmask : 1; /* disallow setting unmask bit */
- unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
unsigned nobios : 1; /* flag: do not probe bios for drive */
unsigned revalidate : 1; /* request revalidation */
unsigned atapi_overlap : 1; /* flag: ATAPI overlap (not supported) */
@@ -376,7 +375,6 @@
byte mult_count; /* current multiple sector 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 */
byte sect0; /* offset of first sector for DM6:DDO */
@@ -390,12 +388,18 @@
unsigned long long capacity48; /* total number of sectors */
unsigned int drive_data; /* for use by tuneproc/selectproc as needed */
+ /* FIXME: Those are properties of a channel and not a drive! Move them
+ * later there.
+ */
+ byte slow; /* flag: slow data port */
+ unsigned no_io_32bit : 1; /* disallow enabling 32bit I/O */
+ byte io_32bit; /* 0=16-bit, 1=32-bit, 2/3=32bit+sync */
+
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[6]; /* drive name, such as "hda" */
struct ata_operations *driver;
void *driver_data; /* extra driver data */
@@ -447,47 +451,6 @@
typedef int (ide_dmaproc_t)(ide_dma_action_t, ide_drive_t *);
-/*
- * An ide_ideproc_t() performs CPU-polled transfers to/from a drive.
- * Arguments are: the drive, the buffer pointer, and the length (in bytes or
- * words depending on if it's an IDE or ATAPI call).
- *
- * 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
- * override that mechanism using this function to work.
- *
- */
-typedef enum { ideproc_ide_input_data, ideproc_ide_output_data,
- ideproc_atapi_input_bytes, ideproc_atapi_output_bytes
-} ide_ide_action_t;
-
-typedef void (ide_ideproc_t)(ide_ide_action_t, ide_drive_t *, void *, unsigned int);
-
-/*
- * An ide_tuneproc_t() is used to set the speed of an IDE interface
- * to a particular PIO mode. The "byte" parameter is used
- * to select the PIO mode by number (0,1,2,3,4,5), and a value of 255
- * indicates that the interface driver should "auto-tune" the PIO mode
- * according to the drive capabilities in drive->id;
- *
- * Not all interface types support tuning, and not all of those
- * support all possible PIO settings. They may silently ignore
- * or round values as they see fit.
- */
-typedef void (ide_tuneproc_t) (ide_drive_t *, byte);
-typedef int (ide_speedproc_t) (ide_drive_t *, byte);
-
-/*
- * This is used to provide support for strange interfaces
- */
-typedef void (ide_selectproc_t) (ide_drive_t *);
-typedef void (ide_resetproc_t) (ide_drive_t *);
-typedef int (ide_quirkproc_t) (ide_drive_t *);
-typedef void (ide_intrproc_t) (ide_drive_t *);
-typedef void (ide_maskproc_t) (ide_drive_t *, int);
-typedef void (ide_rw_proc_t) (ide_drive_t *, ide_dma_action_t);
-
enum {
ATA_PRIMARY = 0,
ATA_SECONDARY = 1
@@ -507,15 +470,40 @@
#endif
ide_drive_t drives[MAX_DRIVES]; /* drive info */
struct gendisk *gd; /* gendisk structure */
- ide_tuneproc_t *tuneproc; /* routine to tune PIO mode for drives */
- ide_speedproc_t *speedproc; /* routine to retune DMA modes for drives */
- ide_selectproc_t *selectproc; /* tweaks hardware to select drive */
- ide_resetproc_t *resetproc; /* routine to reset controller after a disk reset */
- ide_intrproc_t *intrproc; /* special interrupt handling for shared pci interrupts */
- ide_maskproc_t *maskproc; /* special host masking for drive selection */
- ide_quirkproc_t *quirkproc; /* check host's drive quirk list */
- ide_rw_proc_t *rwproc; /* adjust timing based upon rq->cmd direction */
- ide_ideproc_t *ideproc; /* CPU-polled transfer routine */
+
+ /*
+ * Routines to tune PIO and DMA mode for drives.
+ *
+ * A value of 255 indicates that the function should choose the optimal
+ * mode itself.
+ */
+ void (*tuneproc) (ide_drive_t *, byte pio);
+ int (*speedproc) (ide_drive_t *, byte pio);
+
+ /* tweaks hardware to select drive */
+ void (*selectproc) (ide_drive_t *);
+
+ /* routine to reset controller after a disk reset */
+ void (*resetproc) (ide_drive_t *);
+
+ /* special interrupt handling for shared pci interrupts */
+ void (*intrproc) (ide_drive_t *);
+
+ /* special host masking for drive selection */
+ void (*maskproc) (ide_drive_t *, int);
+
+ /* adjust timing based upon rq->cmd direction */
+ void (*rwproc) (ide_drive_t *, ide_dma_action_t);
+
+ /* check host's drive quirk list */
+ int (*quirkproc) (ide_drive_t *);
+
+ /* CPU-polled transfer routines */
+ void (*ata_read)(ide_drive_t *, void *, unsigned int);
+ void (*ata_write)(ide_drive_t *, void *, unsigned int);
+ void (*atapi_read)(ide_drive_t *, void *, unsigned int);
+ void (*atapi_write)(ide_drive_t *, void *, unsigned int);
+
ide_dmaproc_t *dmaproc; /* dma read/write/abort routine */
unsigned long dma_base; /* base addr for dma ports */
unsigned dma_extra; /* extra addr for dma ports */
@@ -829,7 +817,7 @@
*/
struct ata_request {
struct request *ar_rq; /* real request */
- struct ide_drive_s *ar_drive; /* associated drive */
+ struct ata_device *ar_drive; /* associated drive */
unsigned long ar_flags; /* ATA_AR_* flags */
int ar_tag; /* tag number, if any */
struct list_head ar_queue; /* pending list */
@@ -848,12 +836,11 @@
#define AR_TASK_CMD(ar) ((ar)->ar_task.taskfile.command)
-void ata_input_data (ide_drive_t *drive, void *buffer, unsigned int wcount);
-void ata_output_data (ide_drive_t *drive, void *buffer, unsigned int wcount);
-void atapi_input_bytes (ide_drive_t *drive, void *buffer, unsigned int bytecount);
-void atapi_output_bytes (ide_drive_t *drive, void *buffer, unsigned int bytecount);
-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);
+extern void ata_read(ide_drive_t *drive, void *buffer, unsigned int wcount);
+extern void ata_write(ide_drive_t *drive, void *buffer, unsigned int wcount);
+
+extern void atapi_read(ide_drive_t *drive, void *buffer, unsigned int bytecount);
+extern void atapi_write(ide_drive_t *drive, void *buffer, unsigned int bytecount);
extern ide_startstop_t ata_taskfile(ide_drive_t *drive,
struct ata_taskfile *args, struct request *rq);