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Subject[git patches] IDE updates
Date

Updates/fixes for host drivers.


Please pull from:

master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6.git/

to receive the following updates:

drivers/ide/cris/ide-cris.c | 9 +-
drivers/ide/legacy/ide-cs.c | 1 +
drivers/ide/pci/aec62xx.c | 22 +--
drivers/ide/pci/alim15x3.c | 7 +-
drivers/ide/pci/cmd64x.c | 537 +++++++++++++++++++++-------------------
drivers/ide/pci/hpt366.c | 7 +-
drivers/ide/pci/it821x.c | 126 +++++-----
drivers/ide/pci/pdc202xx_new.c | 3 -
drivers/ide/pci/siimage.c | 12 +-
drivers/ide/pci/sl82c105.c | 247 ++++++++-----------
include/linux/ide.h | 1 -
11 files changed, 459 insertions(+), 513 deletions(-)


Bartlomiej Zolnierkiewicz (5):
alim15x3: PIO fallback fix
pdc202xx_new: enable DMA for all ATAPI devices
it821x: PIO mode setup fixes
siimage: fix wrong ->swdma_mask
ide-cris: fix ->speedproc and wrong ->swdma_mask

Fabrice Aeschbacher (1):
ide-cs: recognize 2GB CompactFlash from Transcend

Sergei Shtylyov (9):
sl82c105: rework PIO support (take 2)
sl82c105: DMA support code cleanup (take 4)
cmd64x: fix multiword and remove single-word DMA support
cmd64x: interrupt status fixes (take 2)
cmd64x: add/fix enablebits (take 2)
cmd64x: procfs code fixes/cleanups (take 2)
cmd64x: use interrupt status from MRDMODE register (take 2)
aec62xx: fix PIO/DMA setup issues
hpt366: don't check enablebits for HPT36x


diff --git a/drivers/ide/cris/ide-cris.c b/drivers/ide/cris/ide-cris.c
index 556455f..5e8efc8 100644
--- a/drivers/ide/cris/ide-cris.c
+++ b/drivers/ide/cris/ide-cris.c
@@ -730,7 +730,7 @@ static int speed_cris_ide(ide_drive_t *drive, u8 speed)

if (speed >= XFER_PIO_0 && speed <= XFER_PIO_4) {
tune_cris_ide(drive, speed - XFER_PIO_0);
- return 0;
+ return ide_config_drive_speed(drive, speed);
}

switch(speed)
@@ -760,7 +760,8 @@ static int speed_cris_ide(ide_drive_t *drive, u8 speed)
hold = ATA_DMA2_HOLD;
break;
default:
- return 0;
+ BUG();
+ break;
}

if (speed >= XFER_UDMA_0)
@@ -768,7 +769,7 @@ static int speed_cris_ide(ide_drive_t *drive, u8 speed)
else
cris_ide_set_speed(TYPE_DMA, 0, strobe, hold);

- return 0;
+ return ide_config_drive_speed(drive, speed);
}

void __init
@@ -821,7 +822,6 @@ init_e100_ide (void)
hwif->udma_four = 0;
hwif->ultra_mask = cris_ultra_mask;
hwif->mwdma_mask = 0x07; /* Multiword DMA 0-2 */
- hwif->swdma_mask = 0x07; /* Singleword DMA 0-2 */
hwif->autodma = 1;
hwif->drives[0].autodma = 1;
hwif->drives[1].autodma = 1;
@@ -1010,7 +1010,6 @@ static int cris_config_drive_for_dma (ide_drive_t *drive)
return 0;

speed_cris_ide(drive, speed);
- ide_config_drive_speed(drive, speed);

return ide_dma_enable(drive);
}
diff --git a/drivers/ide/legacy/ide-cs.c b/drivers/ide/legacy/ide-cs.c
index b08c37c..c6522a6 100644
--- a/drivers/ide/legacy/ide-cs.c
+++ b/drivers/ide/legacy/ide-cs.c
@@ -401,6 +401,7 @@ static struct pcmcia_device_id ide_ids[] = {
PCMCIA_DEVICE_PROD_ID12("TOSHIBA", "MK2001MPL", 0xb4585a1a, 0x3489e003),
PCMCIA_DEVICE_PROD_ID1("TRANSCEND 512M ", 0xd0909443),
PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS1GCF80", 0x709b1bf1, 0x2a54d4b1),
+ PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS2GCF120", 0x709b1bf1, 0x969aa4f2),
PCMCIA_DEVICE_PROD_ID12("TRANSCEND", "TS4GCF120", 0x709b1bf1, 0xf54a91c8),
PCMCIA_DEVICE_PROD_ID12("WIT", "IDE16", 0x244e5994, 0x3e232852),
PCMCIA_DEVICE_PROD_ID12("WEIDA", "TWTTI", 0xcc7cf69c, 0x212bb918),
diff --git a/drivers/ide/pci/aec62xx.c b/drivers/ide/pci/aec62xx.c
index 990eafe..73bdf64 100644
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -1,7 +1,8 @@
/*
- * linux/drivers/ide/pci/aec62xx.c Version 0.11 March 27, 2002
+ * linux/drivers/ide/pci/aec62xx.c Version 0.21 Apr 21, 2007
*
* Copyright (C) 1999-2002 Andre Hedrick <andre@linux-ide.org>
+ * Copyright (C) 2007 MontaVista Software, Inc. <source@mvista.com>
*
*/

@@ -193,18 +194,8 @@ static int config_chipset_for_dma (ide_drive_t *drive)

static void aec62xx_tune_drive (ide_drive_t *drive, u8 pio)
{
- u8 speed = 0;
- u8 new_pio = XFER_PIO_0 + ide_get_best_pio_mode(drive, 255, 5, NULL);
-
- switch(pio) {
- case 5: speed = new_pio; break;
- case 4: speed = XFER_PIO_4; break;
- case 3: speed = XFER_PIO_3; break;
- case 2: speed = XFER_PIO_2; break;
- case 1: speed = XFER_PIO_1; break;
- default: speed = XFER_PIO_0; break;
- }
- (void) aec62xx_tune_chipset(drive, speed);
+ pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
+ (void) aec62xx_tune_chipset(drive, pio + XFER_PIO_0);
}

static int aec62xx_config_drive_xfer_rate (ide_drive_t *drive)
@@ -213,7 +204,7 @@ static int aec62xx_config_drive_xfer_rate (ide_drive_t *drive)
return 0;

if (ide_use_fast_pio(drive))
- aec62xx_tune_drive(drive, 5);
+ aec62xx_tune_drive(drive, 255);

return -1;
}
@@ -288,11 +279,10 @@ static void __devinit init_hwif_aec62xx(ide_hwif_t *hwif)

hwif->ultra_mask = 0x7f;
hwif->mwdma_mask = 0x07;
- hwif->swdma_mask = 0x07;

hwif->ide_dma_check = &aec62xx_config_drive_xfer_rate;
hwif->ide_dma_lostirq = &aec62xx_irq_timeout;
- hwif->ide_dma_timeout = &aec62xx_irq_timeout;
+
if (!noautodma)
hwif->autodma = 1;
hwif->drives[0].autodma = hwif->autodma;
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c
index 83e0aa6..946a127 100644
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -534,7 +534,7 @@ static int ali15x3_config_drive_for_dma(ide_drive_t *drive)
struct hd_driveid *id = drive->id;

if ((m5229_revision<=0x20) && (drive->media!=ide_disk))
- goto no_dma_set;
+ goto ata_pio;

drive->init_speed = 0;

@@ -555,20 +555,19 @@ try_dma_modes:
(id->dma_1word & hwif->swdma_mask)) {
/* Force if Capable regular DMA modes */
if (!config_chipset_for_dma(drive))
- goto no_dma_set;
+ goto ata_pio;
}
} else if (__ide_dma_good_drive(drive) &&
(id->eide_dma_time < 150)) {
/* Consult the list of known "good" drives */
if (!config_chipset_for_dma(drive))
- goto no_dma_set;
+ goto ata_pio;
} else {
goto ata_pio;
}
} else {
ata_pio:
hwif->tuneproc(drive, 255);
-no_dma_set:
return -1;
}

diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c
index 561197f..77f51ab 100644
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -1,10 +1,7 @@
-/* $Id: cmd64x.c,v 1.21 2000/01/30 23:23:16
- *
- * linux/drivers/ide/pci/cmd64x.c Version 1.42 Feb 8, 2007
+/*
+ * linux/drivers/ide/pci/cmd64x.c Version 1.47 Mar 19, 2007
*
* cmd64x.c: Enable interrupts at initialization time on Ultra/PCI machines.
- * Note, this driver is not used at all on other systems because
- * there the "BIOS" has done all of the following already.
* Due to massive hardware bugs, UltraDMA is only supported
* on the 646U2 and not on the 646U.
*
@@ -39,11 +36,12 @@
* CMD64x specific registers definition.
*/
#define CFR 0x50
-#define CFR_INTR_CH0 0x02
+#define CFR_INTR_CH0 0x04
#define CNTRL 0x51
-#define CNTRL_DIS_RA0 0x40
-#define CNTRL_DIS_RA1 0x80
-#define CNTRL_ENA_2ND 0x08
+#define CNTRL_ENA_1ST 0x04
+#define CNTRL_ENA_2ND 0x08
+#define CNTRL_DIS_RA0 0x40
+#define CNTRL_DIS_RA1 0x80

#define CMDTIM 0x52
#define ARTTIM0 0x53
@@ -90,86 +88,67 @@ static int n_cmd_devs;
static char * print_cmd64x_get_info (char *buf, struct pci_dev *dev, int index)
{
char *p = buf;
-
- u8 reg53 = 0, reg54 = 0, reg55 = 0, reg56 = 0; /* primary */
- u8 reg57 = 0, reg58 = 0, reg5b; /* secondary */
u8 reg72 = 0, reg73 = 0; /* primary */
u8 reg7a = 0, reg7b = 0; /* secondary */
- u8 reg50 = 0, reg71 = 0; /* extra */
+ u8 reg50 = 1, reg51 = 1, reg57 = 0, reg71 = 0; /* extra */
+ u8 rev = 0;

p += sprintf(p, "\nController: %d\n", index);
- p += sprintf(p, "CMD%x Chipset.\n", dev->device);
+ p += sprintf(p, "PCI-%x Chipset.\n", dev->device);
+
(void) pci_read_config_byte(dev, CFR, &reg50);
- (void) pci_read_config_byte(dev, ARTTIM0, &reg53);
- (void) pci_read_config_byte(dev, DRWTIM0, &reg54);
- (void) pci_read_config_byte(dev, ARTTIM1, &reg55);
- (void) pci_read_config_byte(dev, DRWTIM1, &reg56);
- (void) pci_read_config_byte(dev, ARTTIM2, &reg57);
- (void) pci_read_config_byte(dev, DRWTIM2, &reg58);
- (void) pci_read_config_byte(dev, DRWTIM3, &reg5b);
+ (void) pci_read_config_byte(dev, CNTRL, &reg51);
+ (void) pci_read_config_byte(dev, ARTTIM23, &reg57);
(void) pci_read_config_byte(dev, MRDMODE, &reg71);
(void) pci_read_config_byte(dev, BMIDESR0, &reg72);
(void) pci_read_config_byte(dev, UDIDETCR0, &reg73);
(void) pci_read_config_byte(dev, BMIDESR1, &reg7a);
(void) pci_read_config_byte(dev, UDIDETCR1, &reg7b);

- p += sprintf(p, "--------------- Primary Channel "
- "---------------- Secondary Channel "
- "-------------\n");
- p += sprintf(p, " %sabled "
- " %sabled\n",
- (reg72&0x80)?"dis":" en",
- (reg7a&0x80)?"dis":" en");
- p += sprintf(p, "--------------- drive0 "
- "--------- drive1 -------- drive0 "
- "---------- drive1 ------\n");
- p += sprintf(p, "DMA enabled: %s %s"
- " %s %s\n",
- (reg72&0x20)?"yes":"no ", (reg72&0x40)?"yes":"no ",
- (reg7a&0x20)?"yes":"no ", (reg7a&0x40)?"yes":"no ");
-
- p += sprintf(p, "DMA Mode: %s(%s) %s(%s)",
- (reg72&0x20)?((reg73&0x01)?"UDMA":" DMA"):" PIO",
- (reg72&0x20)?(
- ((reg73&0x30)==0x30)?(((reg73&0x35)==0x35)?"3":"0"):
- ((reg73&0x20)==0x20)?(((reg73&0x25)==0x25)?"3":"1"):
- ((reg73&0x10)==0x10)?(((reg73&0x15)==0x15)?"4":"2"):
- ((reg73&0x00)==0x00)?(((reg73&0x05)==0x05)?"5":"2"):
- "X"):"?",
- (reg72&0x40)?((reg73&0x02)?"UDMA":" DMA"):" PIO",
- (reg72&0x40)?(
- ((reg73&0xC0)==0xC0)?(((reg73&0xC5)==0xC5)?"3":"0"):
- ((reg73&0x80)==0x80)?(((reg73&0x85)==0x85)?"3":"1"):
- ((reg73&0x40)==0x40)?(((reg73&0x4A)==0x4A)?"4":"2"):
- ((reg73&0x00)==0x00)?(((reg73&0x0A)==0x0A)?"5":"2"):
- "X"):"?");
- p += sprintf(p, " %s(%s) %s(%s)\n",
- (reg7a&0x20)?((reg7b&0x01)?"UDMA":" DMA"):" PIO",
- (reg7a&0x20)?(
- ((reg7b&0x30)==0x30)?(((reg7b&0x35)==0x35)?"3":"0"):
- ((reg7b&0x20)==0x20)?(((reg7b&0x25)==0x25)?"3":"1"):
- ((reg7b&0x10)==0x10)?(((reg7b&0x15)==0x15)?"4":"2"):
- ((reg7b&0x00)==0x00)?(((reg7b&0x05)==0x05)?"5":"2"):
- "X"):"?",
- (reg7a&0x40)?((reg7b&0x02)?"UDMA":" DMA"):" PIO",
- (reg7a&0x40)?(
- ((reg7b&0xC0)==0xC0)?(((reg7b&0xC5)==0xC5)?"3":"0"):
- ((reg7b&0x80)==0x80)?(((reg7b&0x85)==0x85)?"3":"1"):
- ((reg7b&0x40)==0x40)?(((reg7b&0x4A)==0x4A)?"4":"2"):
- ((reg7b&0x00)==0x00)?(((reg7b&0x0A)==0x0A)?"5":"2"):
- "X"):"?" );
- p += sprintf(p, "PIO Mode: %s %s"
- " %s %s\n",
- "?", "?", "?", "?");
- p += sprintf(p, " %s %s\n",
- (reg50 & CFR_INTR_CH0) ? "interrupting" : "polling ",
- (reg57 & ARTTIM23_INTR_CH1) ? "interrupting" : "polling");
- p += sprintf(p, " %s %s\n",
- (reg71 & MRDMODE_INTR_CH0) ? "pending" : "clear ",
- (reg71 & MRDMODE_INTR_CH1) ? "pending" : "clear");
- p += sprintf(p, " %s %s\n",
- (reg71 & MRDMODE_BLK_CH0) ? "blocked" : "enabled",
- (reg71 & MRDMODE_BLK_CH1) ? "blocked" : "enabled");
+ /* PCI0643/6 originally didn't have the primary channel enable bit */
+ (void) pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
+ if ((dev->device == PCI_DEVICE_ID_CMD_643) ||
+ (dev->device == PCI_DEVICE_ID_CMD_646 && rev < 3))
+ reg51 |= CNTRL_ENA_1ST;
+
+ p += sprintf(p, "---------------- Primary Channel "
+ "---------------- Secondary Channel ------------\n");
+ p += sprintf(p, " %s %s\n",
+ (reg51 & CNTRL_ENA_1ST) ? "enabled " : "disabled",
+ (reg51 & CNTRL_ENA_2ND) ? "enabled " : "disabled");
+ p += sprintf(p, "---------------- drive0 --------- drive1 "
+ "-------- drive0 --------- drive1 ------\n");
+ p += sprintf(p, "DMA enabled: %s %s"
+ " %s %s\n",
+ (reg72 & 0x20) ? "yes" : "no ", (reg72 & 0x40) ? "yes" : "no ",
+ (reg7a & 0x20) ? "yes" : "no ", (reg7a & 0x40) ? "yes" : "no ");
+ p += sprintf(p, "UltraDMA mode: %s (%c) %s (%c)",
+ ( reg73 & 0x01) ? " on" : "off",
+ ((reg73 & 0x30) == 0x30) ? ((reg73 & 0x04) ? '3' : '0') :
+ ((reg73 & 0x30) == 0x20) ? ((reg73 & 0x04) ? '3' : '1') :
+ ((reg73 & 0x30) == 0x10) ? ((reg73 & 0x04) ? '4' : '2') :
+ ((reg73 & 0x30) == 0x00) ? ((reg73 & 0x04) ? '5' : '2') : '?',
+ ( reg73 & 0x02) ? " on" : "off",
+ ((reg73 & 0xC0) == 0xC0) ? ((reg73 & 0x08) ? '3' : '0') :
+ ((reg73 & 0xC0) == 0x80) ? ((reg73 & 0x08) ? '3' : '1') :
+ ((reg73 & 0xC0) == 0x40) ? ((reg73 & 0x08) ? '4' : '2') :
+ ((reg73 & 0xC0) == 0x00) ? ((reg73 & 0x08) ? '5' : '2') : '?');
+ p += sprintf(p, " %s (%c) %s (%c)\n",
+ ( reg7b & 0x01) ? " on" : "off",
+ ((reg7b & 0x30) == 0x30) ? ((reg7b & 0x04) ? '3' : '0') :
+ ((reg7b & 0x30) == 0x20) ? ((reg7b & 0x04) ? '3' : '1') :
+ ((reg7b & 0x30) == 0x10) ? ((reg7b & 0x04) ? '4' : '2') :
+ ((reg7b & 0x30) == 0x00) ? ((reg7b & 0x04) ? '5' : '2') : '?',
+ ( reg7b & 0x02) ? " on" : "off",
+ ((reg7b & 0xC0) == 0xC0) ? ((reg7b & 0x08) ? '3' : '0') :
+ ((reg7b & 0xC0) == 0x80) ? ((reg7b & 0x08) ? '3' : '1') :
+ ((reg7b & 0xC0) == 0x40) ? ((reg7b & 0x08) ? '4' : '2') :
+ ((reg7b & 0xC0) == 0x00) ? ((reg7b & 0x08) ? '5' : '2') : '?');
+ p += sprintf(p, "Interrupt: %s, %s %s, %s\n",
+ (reg71 & MRDMODE_BLK_CH0 ) ? "blocked" : "enabled",
+ (reg50 & CFR_INTR_CH0 ) ? "pending" : "clear ",
+ (reg71 & MRDMODE_BLK_CH1 ) ? "blocked" : "enabled",
+ (reg57 & ARTTIM23_INTR_CH1) ? "pending" : "clear ");

return (char *)p;
}
@@ -179,7 +158,6 @@ static int cmd64x_get_info (char *buffer, char **addr, off_t offset, int count)
char *p = buffer;
int i;

- p += sprintf(p, "\n");
for (i = 0; i < n_cmd_devs; i++) {
struct pci_dev *dev = cmd_devs[i];
p = print_cmd64x_get_info(p, dev, i);
@@ -195,116 +173,103 @@ static u8 quantize_timing(int timing, int quant)
}

/*
- * This routine writes the prepared setup/active/recovery counts
- * for a drive into the cmd646 chipset registers to active them.
+ * This routine calculates active/recovery counts and then writes them into
+ * the chipset registers.
*/
-static void program_drive_counts (ide_drive_t *drive, int setup_count, int active_count, int recovery_count)
+static void program_cycle_times (ide_drive_t *drive, int cycle_time, int active_time)
{
- unsigned long flags;
- struct pci_dev *dev = HWIF(drive)->pci_dev;
- ide_drive_t *drives = HWIF(drive)->drives;
- u8 temp_b;
- static const u8 setup_counts[] = {0x40, 0x40, 0x40, 0x80, 0, 0xc0};
- static const u8 recovery_counts[] =
+ struct pci_dev *dev = HWIF(drive)->pci_dev;
+ int clock_time = 1000 / system_bus_clock();
+ u8 cycle_count, active_count, recovery_count, drwtim;
+ static const u8 recovery_values[] =
{15, 15, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 0};
- static const u8 arttim_regs[2][2] = {
- { ARTTIM0, ARTTIM1 },
- { ARTTIM23, ARTTIM23 }
- };
- static const u8 drwtim_regs[2][2] = {
- { DRWTIM0, DRWTIM1 },
- { DRWTIM2, DRWTIM3 }
- };
- int channel = (int) HWIF(drive)->channel;
- int slave = (drives != drive); /* Is this really the best way to determine this?? */
-
- cmdprintk("program_drive_count parameters = s(%d),a(%d),r(%d),p(%d)\n",
- setup_count, active_count, recovery_count, drive->present);
+ static const u8 drwtim_regs[4] = {DRWTIM0, DRWTIM1, DRWTIM2, DRWTIM3};
+
+ cmdprintk("program_cycle_times parameters: total=%d, active=%d\n",
+ cycle_time, active_time);
+
+ cycle_count = quantize_timing( cycle_time, clock_time);
+ active_count = quantize_timing(active_time, clock_time);
+ recovery_count = cycle_count - active_count;
+
/*
- * Set up address setup count registers.
- * Primary interface has individual count/timing registers for
- * each drive. Secondary interface has one common set of registers,
- * for address setup so we merge these timings, using the slowest
- * value.
+ * In case we've got too long recovery phase, try to lengthen
+ * the active phase
*/
- if (channel) {
- drive->drive_data = setup_count;
- setup_count = max(drives[0].drive_data,
- drives[1].drive_data);
- cmdprintk("Secondary interface, setup_count = %d\n",
- setup_count);
+ if (recovery_count > 16) {
+ active_count += recovery_count - 16;
+ recovery_count = 16;
}
+ if (active_count > 16) /* shouldn't actually happen... */
+ active_count = 16;
+
+ cmdprintk("Final counts: total=%d, active=%d, recovery=%d\n",
+ cycle_count, active_count, recovery_count);

/*
* Convert values to internal chipset representation
*/
- setup_count = (setup_count > 5) ? 0xc0 : (int) setup_counts[setup_count];
- active_count &= 0xf; /* Remember, max value is 16 */
- recovery_count = (int) recovery_counts[recovery_count];
+ recovery_count = recovery_values[recovery_count];
+ active_count &= 0x0f;

- cmdprintk("Final values = %d,%d,%d\n",
- setup_count, active_count, recovery_count);
-
- /*
- * Now that everything is ready, program the new timings
- */
- local_irq_save(flags);
- /*
- * Program the address_setup clocks into ARTTIM reg,
- * and then the active/recovery counts into the DRWTIM reg
- */
- (void) pci_read_config_byte(dev, arttim_regs[channel][slave], &temp_b);
- (void) pci_write_config_byte(dev, arttim_regs[channel][slave],
- ((u8) setup_count) | (temp_b & 0x3f));
- (void) pci_write_config_byte(dev, drwtim_regs[channel][slave],
- (u8) ((active_count << 4) | recovery_count));
- cmdprintk ("Write %x to %x\n",
- ((u8) setup_count) | (temp_b & 0x3f),
- arttim_regs[channel][slave]);
- cmdprintk ("Write %x to %x\n",
- (u8) ((active_count << 4) | recovery_count),
- drwtim_regs[channel][slave]);
- local_irq_restore(flags);
+ /* Program the active/recovery counts into the DRWTIM register */
+ drwtim = (active_count << 4) | recovery_count;
+ (void) pci_write_config_byte(dev, drwtim_regs[drive->dn], drwtim);
+ cmdprintk("Write 0x%02x to reg 0x%x\n", drwtim, drwtim_regs[drive->dn]);
}

/*
- * This routine selects drive's best PIO mode, calculates setup/active/recovery
- * counts, and then writes them into the chipset registers.
+ * This routine selects drive's best PIO mode and writes into the chipset
+ * registers setup/active/recovery timings.
*/
static u8 cmd64x_tune_pio (ide_drive_t *drive, u8 mode_wanted)
{
- int setup_time, active_time, cycle_time;
- u8 cycle_count, setup_count, active_count, recovery_count;
- u8 pio_mode;
- int clock_time = 1000 / system_bus_clock();
+ ide_hwif_t *hwif = HWIF(drive);
+ struct pci_dev *dev = hwif->pci_dev;
ide_pio_data_t pio;
-
+ u8 pio_mode, setup_count, arttim = 0;
+ static const u8 setup_values[] = {0x40, 0x40, 0x40, 0x80, 0, 0xc0};
+ static const u8 arttim_regs[4] = {ARTTIM0, ARTTIM1, ARTTIM23, ARTTIM23};
pio_mode = ide_get_best_pio_mode(drive, mode_wanted, 5, &pio);
- cycle_time = pio.cycle_time;

- setup_time = ide_pio_timings[pio_mode].setup_time;
- active_time = ide_pio_timings[pio_mode].active_time;
+ cmdprintk("%s: PIO mode wanted %d, selected %d (%d ns)%s\n",
+ drive->name, mode_wanted, pio_mode, pio.cycle_time,
+ pio.overridden ? " (overriding vendor mode)" : "");

- setup_count = quantize_timing( setup_time, clock_time);
- cycle_count = quantize_timing( cycle_time, clock_time);
- active_count = quantize_timing(active_time, clock_time);
+ program_cycle_times(drive, pio.cycle_time,
+ ide_pio_timings[pio_mode].active_time);

- recovery_count = cycle_count - active_count;
- /* program_drive_counts() takes care of zero recovery cycles */
- if (recovery_count > 16) {
- active_count += recovery_count - 16;
- recovery_count = 16;
+ setup_count = quantize_timing(ide_pio_timings[pio_mode].setup_time,
+ 1000 / system_bus_clock());
+
+ /*
+ * The primary channel has individual address setup timing registers
+ * for each drive and the hardware selects the slowest timing itself.
+ * The secondary channel has one common register and we have to select
+ * the slowest address setup timing ourselves.
+ */
+ if (hwif->channel) {
+ ide_drive_t *drives = hwif->drives;
+
+ drive->drive_data = setup_count;
+ setup_count = max(drives[0].drive_data, drives[1].drive_data);
}
- if (active_count > 16)
- active_count = 16; /* maximum allowed by cmd64x */

- program_drive_counts (drive, setup_count, active_count, recovery_count);
+ if (setup_count > 5) /* shouldn't actually happen... */
+ setup_count = 5;
+ cmdprintk("Final address setup count: %d\n", setup_count);

- cmdprintk("%s: PIO mode wanted %d, selected %d (%dns)%s, "
- "clocks=%d/%d/%d\n",
- drive->name, mode_wanted, pio_mode, cycle_time,
- pio.overridden ? " (overriding vendor mode)" : "",
- setup_count, active_count, recovery_count);
+ /*
+ * Program the address setup clocks into the ARTTIM registers.
+ * Avoid clearing the secondary channel's interrupt bit.
+ */
+ (void) pci_read_config_byte (dev, arttim_regs[drive->dn], &arttim);
+ if (hwif->channel)
+ arttim &= ~ARTTIM23_INTR_CH1;
+ arttim &= ~0xc0;
+ arttim |= setup_values[setup_count];
+ (void) pci_write_config_byte(dev, arttim_regs[drive->dn], arttim);
+ cmdprintk("Write 0x%02x to reg 0x%x\n", arttim, arttim_regs[drive->dn]);

return pio_mode;
}
@@ -376,61 +341,64 @@ static u8 cmd64x_ratemask (ide_drive_t *drive)
return mode;
}

-static int cmd64x_tune_chipset (ide_drive_t *drive, u8 xferspeed)
+static int cmd64x_tune_chipset (ide_drive_t *drive, u8 speed)
{
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
+ u8 unit = drive->dn & 0x01;
+ u8 regU = 0, pciU = hwif->channel ? UDIDETCR1 : UDIDETCR0;

- u8 unit = (drive->select.b.unit & 0x01);
- u8 regU = 0, pciU = (hwif->channel) ? UDIDETCR1 : UDIDETCR0;
- u8 regD = 0, pciD = (hwif->channel) ? BMIDESR1 : BMIDESR0;
-
- u8 speed = ide_rate_filter(cmd64x_ratemask(drive), xferspeed);
+ speed = ide_rate_filter(cmd64x_ratemask(drive), speed);

if (speed >= XFER_SW_DMA_0) {
- (void) pci_read_config_byte(dev, pciD, &regD);
(void) pci_read_config_byte(dev, pciU, &regU);
- regD &= ~(unit ? 0x40 : 0x20);
regU &= ~(unit ? 0xCA : 0x35);
- (void) pci_write_config_byte(dev, pciD, regD);
- (void) pci_write_config_byte(dev, pciU, regU);
- (void) pci_read_config_byte(dev, pciD, &regD);
- (void) pci_read_config_byte(dev, pciU, &regU);
}

switch(speed) {
- case XFER_UDMA_5: regU |= (unit ? 0x0A : 0x05); break;
- case XFER_UDMA_4: regU |= (unit ? 0x4A : 0x15); break;
- case XFER_UDMA_3: regU |= (unit ? 0x8A : 0x25); break;
- case XFER_UDMA_2: regU |= (unit ? 0x42 : 0x11); break;
- case XFER_UDMA_1: regU |= (unit ? 0x82 : 0x21); break;
- case XFER_UDMA_0: regU |= (unit ? 0xC2 : 0x31); break;
- case XFER_MW_DMA_2: regD |= (unit ? 0x40 : 0x10); break;
- case XFER_MW_DMA_1: regD |= (unit ? 0x80 : 0x20); break;
- case XFER_MW_DMA_0: regD |= (unit ? 0xC0 : 0x30); break;
- case XFER_SW_DMA_2: regD |= (unit ? 0x40 : 0x10); break;
- case XFER_SW_DMA_1: regD |= (unit ? 0x80 : 0x20); break;
- case XFER_SW_DMA_0: regD |= (unit ? 0xC0 : 0x30); break;
- case XFER_PIO_5:
- case XFER_PIO_4:
- case XFER_PIO_3:
- case XFER_PIO_2:
- case XFER_PIO_1:
- case XFER_PIO_0:
- (void) cmd64x_tune_pio(drive, speed - XFER_PIO_0);
- break;
-
- default:
- return 1;
+ case XFER_UDMA_5:
+ regU |= unit ? 0x0A : 0x05;
+ break;
+ case XFER_UDMA_4:
+ regU |= unit ? 0x4A : 0x15;
+ break;
+ case XFER_UDMA_3:
+ regU |= unit ? 0x8A : 0x25;
+ break;
+ case XFER_UDMA_2:
+ regU |= unit ? 0x42 : 0x11;
+ break;
+ case XFER_UDMA_1:
+ regU |= unit ? 0x82 : 0x21;
+ break;
+ case XFER_UDMA_0:
+ regU |= unit ? 0xC2 : 0x31;
+ break;
+ case XFER_MW_DMA_2:
+ program_cycle_times(drive, 120, 70);
+ break;
+ case XFER_MW_DMA_1:
+ program_cycle_times(drive, 150, 80);
+ break;
+ case XFER_MW_DMA_0:
+ program_cycle_times(drive, 480, 215);
+ break;
+ case XFER_PIO_5:
+ case XFER_PIO_4:
+ case XFER_PIO_3:
+ case XFER_PIO_2:
+ case XFER_PIO_1:
+ case XFER_PIO_0:
+ (void) cmd64x_tune_pio(drive, speed - XFER_PIO_0);
+ break;
+ default:
+ return 1;
}

- if (speed >= XFER_SW_DMA_0) {
+ if (speed >= XFER_SW_DMA_0)
(void) pci_write_config_byte(dev, pciU, regU);
- regD |= (unit ? 0x40 : 0x20);
- (void) pci_write_config_byte(dev, pciD, regD);
- }

- return (ide_config_drive_speed(drive, speed));
+ return ide_config_drive_speed(drive, speed);
}

static int config_chipset_for_dma (ide_drive_t *drive)
@@ -457,67 +425,80 @@ static int cmd64x_config_drive_for_dma (ide_drive_t *drive)
return -1;
}

-static int cmd64x_alt_dma_status (struct pci_dev *dev)
+static int cmd648_ide_dma_end (ide_drive_t *drive)
{
- switch(dev->device) {
- case PCI_DEVICE_ID_CMD_648:
- case PCI_DEVICE_ID_CMD_649:
- return 1;
- default:
- break;
- }
- return 0;
+ ide_hwif_t *hwif = HWIF(drive);
+ int err = __ide_dma_end(drive);
+ u8 irq_mask = hwif->channel ? MRDMODE_INTR_CH1 :
+ MRDMODE_INTR_CH0;
+ u8 mrdmode = inb(hwif->dma_master + 0x01);
+
+ /* clear the interrupt bit */
+ outb(mrdmode | irq_mask, hwif->dma_master + 0x01);
+
+ return err;
}

static int cmd64x_ide_dma_end (ide_drive_t *drive)
{
- u8 dma_stat = 0, dma_cmd = 0;
ide_hwif_t *hwif = HWIF(drive);
struct pci_dev *dev = hwif->pci_dev;
+ int irq_reg = hwif->channel ? ARTTIM23 : CFR;
+ u8 irq_mask = hwif->channel ? ARTTIM23_INTR_CH1 :
+ CFR_INTR_CH0;
+ u8 irq_stat = 0;
+ int err = __ide_dma_end(drive);

- drive->waiting_for_dma = 0;
- /* read DMA command state */
- dma_cmd = inb(hwif->dma_command);
- /* stop DMA */
- outb(dma_cmd & ~1, hwif->dma_command);
- /* get DMA status */
- dma_stat = inb(hwif->dma_status);
- /* clear the INTR & ERROR bits */
- outb(dma_stat | 6, hwif->dma_status);
- if (cmd64x_alt_dma_status(dev)) {
- u8 dma_intr = 0;
- u8 dma_mask = (hwif->channel) ? ARTTIM23_INTR_CH1 :
- CFR_INTR_CH0;
- u8 dma_reg = (hwif->channel) ? ARTTIM2 : CFR;
- (void) pci_read_config_byte(dev, dma_reg, &dma_intr);
- /* clear the INTR bit */
- (void) pci_write_config_byte(dev, dma_reg, dma_intr|dma_mask);
- }
- /* purge DMA mappings */
- ide_destroy_dmatable(drive);
- /* verify good DMA status */
- return (dma_stat & 7) != 4;
+ (void) pci_read_config_byte(dev, irq_reg, &irq_stat);
+ /* clear the interrupt bit */
+ (void) pci_write_config_byte(dev, irq_reg, irq_stat | irq_mask);
+
+ return err;
+}
+
+static int cmd648_ide_dma_test_irq (ide_drive_t *drive)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+ u8 irq_mask = hwif->channel ? MRDMODE_INTR_CH1 :
+ MRDMODE_INTR_CH0;
+ u8 dma_stat = inb(hwif->dma_status);
+ u8 mrdmode = inb(hwif->dma_master + 0x01);
+
+#ifdef DEBUG
+ printk("%s: dma_stat: 0x%02x mrdmode: 0x%02x irq_mask: 0x%02x\n",
+ drive->name, dma_stat, mrdmode, irq_mask);
+#endif
+ if (!(mrdmode & irq_mask))
+ return 0;
+
+ /* return 1 if INTR asserted */
+ if (dma_stat & 4)
+ return 1;
+
+ return 0;
}

static int cmd64x_ide_dma_test_irq (ide_drive_t *drive)
{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
- u8 dma_alt_stat = 0, mask = (hwif->channel) ? MRDMODE_INTR_CH1 :
- MRDMODE_INTR_CH0;
- u8 dma_stat = inb(hwif->dma_status);
+ ide_hwif_t *hwif = HWIF(drive);
+ struct pci_dev *dev = hwif->pci_dev;
+ int irq_reg = hwif->channel ? ARTTIM23 : CFR;
+ u8 irq_mask = hwif->channel ? ARTTIM23_INTR_CH1 :
+ CFR_INTR_CH0;
+ u8 dma_stat = inb(hwif->dma_status);
+ u8 irq_stat = 0;
+
+ (void) pci_read_config_byte(dev, irq_reg, &irq_stat);

- (void) pci_read_config_byte(dev, MRDMODE, &dma_alt_stat);
#ifdef DEBUG
- printk("%s: dma_stat: 0x%02x dma_alt_stat: "
- "0x%02x mask: 0x%02x\n", drive->name,
- dma_stat, dma_alt_stat, mask);
+ printk("%s: dma_stat: 0x%02x irq_stat: 0x%02x irq_mask: 0x%02x\n",
+ drive->name, dma_stat, irq_stat, irq_mask);
#endif
- if (!(dma_alt_stat & mask))
+ if (!(irq_stat & irq_mask))
return 0;

/* return 1 if INTR asserted */
- if ((dma_stat & 4) == 4)
+ if (dma_stat & 4)
return 1;

return 0;
@@ -665,7 +646,6 @@ static void __devinit init_hwif_cmd64x(ide_hwif_t *hwif)

hwif->ultra_mask = 0x3f;
hwif->mwdma_mask = 0x07;
- hwif->swdma_mask = 0x07;

if (dev->device == PCI_DEVICE_ID_CMD_643)
hwif->ultra_mask = 0x80;
@@ -678,17 +658,25 @@ static void __devinit init_hwif_cmd64x(ide_hwif_t *hwif)
if (!(hwif->udma_four))
hwif->udma_four = ata66_cmd64x(hwif);

- if (dev->device == PCI_DEVICE_ID_CMD_646) {
+ switch(dev->device) {
+ case PCI_DEVICE_ID_CMD_648:
+ case PCI_DEVICE_ID_CMD_649:
+ alt_irq_bits:
+ hwif->ide_dma_end = &cmd648_ide_dma_end;
+ hwif->ide_dma_test_irq = &cmd648_ide_dma_test_irq;
+ break;
+ case PCI_DEVICE_ID_CMD_646:
hwif->chipset = ide_cmd646;
if (class_rev == 0x01) {
hwif->ide_dma_end = &cmd646_1_ide_dma_end;
- } else {
- hwif->ide_dma_end = &cmd64x_ide_dma_end;
- hwif->ide_dma_test_irq = &cmd64x_ide_dma_test_irq;
- }
- } else {
- hwif->ide_dma_end = &cmd64x_ide_dma_end;
- hwif->ide_dma_test_irq = &cmd64x_ide_dma_test_irq;
+ break;
+ } else if (class_rev >= 0x03)
+ goto alt_irq_bits;
+ /* fall thru */
+ default:
+ hwif->ide_dma_end = &cmd64x_ide_dma_end;
+ hwif->ide_dma_test_irq = &cmd64x_ide_dma_test_irq;
+ break;
}


@@ -698,42 +686,75 @@ static void __devinit init_hwif_cmd64x(ide_hwif_t *hwif)
hwif->drives[1].autodma = hwif->autodma;
}

+static int __devinit init_setup_cmd64x(struct pci_dev *dev, ide_pci_device_t *d)
+{
+ return ide_setup_pci_device(dev, d);
+}
+
+static int __devinit init_setup_cmd646(struct pci_dev *dev, ide_pci_device_t *d)
+{
+ u8 rev = 0;
+
+ /*
+ * The original PCI0646 didn't have the primary channel enable bit,
+ * it appeared starting with PCI0646U (i.e. revision ID 3).
+ */
+ pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
+ if (rev < 3)
+ d->enablebits[0].reg = 0;
+
+ return ide_setup_pci_device(dev, d);
+}
+
static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
{ /* 0 */
.name = "CMD643",
+ .init_setup = init_setup_cmd64x,
.init_chipset = init_chipset_cmd64x,
.init_hwif = init_hwif_cmd64x,
.channels = 2,
.autodma = AUTODMA,
+ .enablebits = {{0x00,0x00,0x00}, {0x51,0x08,0x08}},
.bootable = ON_BOARD,
},{ /* 1 */
.name = "CMD646",
+ .init_setup = init_setup_cmd646,
.init_chipset = init_chipset_cmd64x,
.init_hwif = init_hwif_cmd64x,
.channels = 2,
.autodma = AUTODMA,
- .enablebits = {{0x00,0x00,0x00}, {0x51,0x80,0x80}},
+ .enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.bootable = ON_BOARD,
},{ /* 2 */
.name = "CMD648",
+ .init_setup = init_setup_cmd64x,
.init_chipset = init_chipset_cmd64x,
.init_hwif = init_hwif_cmd64x,
.channels = 2,
.autodma = AUTODMA,
+ .enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.bootable = ON_BOARD,
},{ /* 3 */
.name = "CMD649",
+ .init_setup = init_setup_cmd64x,
.init_chipset = init_chipset_cmd64x,
.init_hwif = init_hwif_cmd64x,
.channels = 2,
.autodma = AUTODMA,
+ .enablebits = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
.bootable = ON_BOARD,
}
};

+/*
+ * We may have to modify enablebits for PCI0646, so we'd better pass
+ * a local copy of the ide_pci_device_t structure down the call chain...
+ */
static int __devinit cmd64x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
- return ide_setup_pci_device(dev, &cmd64x_chipsets[id->driver_data]);
+ ide_pci_device_t d = cmd64x_chipsets[id->driver_data];
+
+ return d.init_setup(dev, &d);
}

static struct pci_device_id cmd64x_pci_tbl[] = {
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index ab6fa27..cf9d344 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -1,5 +1,5 @@
/*
- * linux/drivers/ide/pci/hpt366.c Version 1.02 Apr 18, 2007
+ * linux/drivers/ide/pci/hpt366.c Version 1.03 May 4, 2007
*
* Copyright (C) 1999-2003 Andre Hedrick <andre@linux-ide.org>
* Portions Copyright (C) 2001 Sun Microsystems, Inc.
@@ -1527,7 +1527,12 @@ static int __devinit init_setup_hpt366(struct pci_dev *dev, ide_pci_device_t *d)
if (rev > 2)
goto init_single;

+ /*
+ * HPT36x chips are single channel and
+ * do not seem to have the channel enable bit...
+ */
d->channels = 1;
+ d->enablebits[0].reg = 0;

if ((dev2 = pci_get_slot(dev->bus, dev->devfn + 1)) != NULL) {
u8 pin1 = 0, pin2 = 0;
diff --git a/drivers/ide/pci/it821x.c b/drivers/ide/pci/it821x.c
index a132767..4e12548 100644
--- a/drivers/ide/pci/it821x.c
+++ b/drivers/ide/pci/it821x.c
@@ -1,8 +1,9 @@

/*
- * linux/drivers/ide/pci/it821x.c Version 0.09 December 2004
+ * linux/drivers/ide/pci/it821x.c Version 0.10 Mar 10 2007
*
* Copyright (C) 2004 Red Hat <alan@redhat.com>
+ * Copyright (C) 2007 Bartlomiej Zolnierkiewicz
*
* May be copied or modified under the terms of the GNU General Public License
* Based in part on the ITE vendor provided SCSI driver.
@@ -104,6 +105,7 @@ static int it8212_noraid;
/**
* it821x_program - program the PIO/MWDMA registers
* @drive: drive to tune
+ * @timing: timing info
*
* Program the PIO/MWDMA timing for this channel according to the
* current clock.
@@ -127,6 +129,7 @@ static void it821x_program(ide_drive_t *drive, u16 timing)
/**
* it821x_program_udma - program the UDMA registers
* @drive: drive to tune
+ * @timing: timing info
*
* Program the UDMA timing for this drive according to the
* current clock.
@@ -153,10 +156,9 @@ static void it821x_program_udma(ide_drive_t *drive, u16 timing)
}
}

-
/**
* it821x_clock_strategy
- * @hwif: hardware interface
+ * @drive: drive to set up
*
* Select between the 50 and 66Mhz base clocks to get the best
* results for this interface.
@@ -182,8 +184,11 @@ static void it821x_clock_strategy(ide_drive_t *drive)
altclock = itdev->want[0][1];
}

- /* Master doesn't care does the slave ? */
- if(clock == ATA_ANY)
+ /*
+ * if both clocks can be used for the mode with the higher priority
+ * use the clock needed by the mode with the lower priority
+ */
+ if (clock == ATA_ANY)
clock = altclock;

/* Nobody cares - keep the same clock */
@@ -240,37 +245,56 @@ static u8 it821x_ratemask (ide_drive_t *drive)
}

/**
- * it821x_tuneproc - tune a drive
+ * it821x_tunepio - tune a drive
* @drive: drive to tune
- * @mode_wanted: the target operating mode
- *
- * Load the timing settings for this device mode into the
- * controller. By the time we are called the mode has been
- * modified as neccessary to handle the absence of seperate
- * master/slave timers for MWDMA/PIO.
+ * @pio: the desired PIO mode
*
- * This code is only used in pass through mode.
+ * Try to tune the drive/host to the desired PIO mode taking into
+ * the consideration the maximum PIO mode supported by the other
+ * device on the cable.
*/

-static void it821x_tuneproc (ide_drive_t *drive, byte mode_wanted)
+static int it821x_tunepio(ide_drive_t *drive, u8 set_pio)
{
ide_hwif_t *hwif = drive->hwif;
struct it821x_dev *itdev = ide_get_hwifdata(hwif);
int unit = drive->select.b.unit;
+ ide_drive_t *pair = &hwif->drives[1 - unit];

/* Spec says 89 ref driver uses 88 */
static u16 pio[] = { 0xAA88, 0xA382, 0xA181, 0x3332, 0x3121 };
static u8 pio_want[] = { ATA_66, ATA_66, ATA_66, ATA_66, ATA_ANY };

- if(itdev->smart)
- return;
+ /*
+ * Compute the best PIO mode we can for a given device. We must
+ * pick a speed that does not cause problems with the other device
+ * on the cable.
+ */
+ if (pair) {
+ u8 pair_pio = ide_get_best_pio_mode(pair, 255, 4, NULL);
+ /* trim PIO to the slowest of the master/slave */
+ if (pair_pio < set_pio)
+ set_pio = pair_pio;
+ }
+
+ if (itdev->smart)
+ goto set_drive_speed;

/* We prefer 66Mhz clock for PIO 0-3, don't care for PIO4 */
- itdev->want[unit][1] = pio_want[mode_wanted];
+ itdev->want[unit][1] = pio_want[set_pio];
itdev->want[unit][0] = 1; /* PIO is lowest priority */
- itdev->pio[unit] = pio[mode_wanted];
+ itdev->pio[unit] = pio[set_pio];
it821x_clock_strategy(drive);
it821x_program(drive, itdev->pio[unit]);
+
+set_drive_speed:
+ return ide_config_drive_speed(drive, XFER_PIO_0 + set_pio);
+}
+
+static void it821x_tuneproc(ide_drive_t *drive, u8 pio)
+{
+ pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
+ (void)it821x_tunepio(drive, pio);
}

/**
@@ -354,40 +378,6 @@ static void it821x_tune_udma (ide_drive_t *drive, byte mode_wanted)
}

/**
- * config_it821x_chipset_for_pio - set drive timings
- * @drive: drive to tune
- * @speed we want
- *
- * Compute the best pio mode we can for a given device. We must
- * pick a speed that does not cause problems with the other device
- * on the cable.
- */
-
-static void config_it821x_chipset_for_pio (ide_drive_t *drive, byte set_speed)
-{
- u8 unit = drive->select.b.unit;
- ide_hwif_t *hwif = drive->hwif;
- ide_drive_t *pair = &hwif->drives[1-unit];
- u8 speed = 0, set_pio = ide_get_best_pio_mode(drive, 255, 5, NULL);
- u8 pair_pio;
-
- /* We have to deal with this mess in pairs */
- if(pair != NULL) {
- pair_pio = ide_get_best_pio_mode(pair, 255, 5, NULL);
- /* Trim PIO to the slowest of the master/slave */
- if(pair_pio < set_pio)
- set_pio = pair_pio;
- }
- it821x_tuneproc(drive, set_pio);
- speed = XFER_PIO_0 + set_pio;
- /* XXX - We trim to the lowest of the pair so the other drive
- will always be fine at this point until we do hotplug passthru */
-
- if (set_speed)
- (void) ide_config_drive_speed(drive, speed);
-}
-
-/**
* it821x_dma_read - DMA hook
* @drive: drive for DMA
*
@@ -450,15 +440,17 @@ static int it821x_tune_chipset (ide_drive_t *drive, byte xferspeed)
struct it821x_dev *itdev = ide_get_hwifdata(hwif);
u8 speed = ide_rate_filter(it821x_ratemask(drive), xferspeed);

- if(!itdev->smart) {
- switch(speed) {
- case XFER_PIO_4:
- case XFER_PIO_3:
- case XFER_PIO_2:
- case XFER_PIO_1:
- case XFER_PIO_0:
- it821x_tuneproc(drive, (speed - XFER_PIO_0));
- break;
+ switch (speed) {
+ case XFER_PIO_4:
+ case XFER_PIO_3:
+ case XFER_PIO_2:
+ case XFER_PIO_1:
+ case XFER_PIO_0:
+ return it821x_tunepio(drive, speed - XFER_PIO_0);
+ }
+
+ if (itdev->smart == 0) {
+ switch (speed) {
/* MWDMA tuning is really hard because our MWDMA and PIO
timings are kept in the same place. We can switch in the
host dma on/off callbacks */
@@ -498,14 +490,12 @@ static int config_chipset_for_dma (ide_drive_t *drive)
{
u8 speed = ide_dma_speed(drive, it821x_ratemask(drive));

- if (speed) {
- config_it821x_chipset_for_pio(drive, 0);
- it821x_tune_chipset(drive, speed);
+ if (speed == 0)
+ return 0;

- return ide_dma_enable(drive);
- }
+ it821x_tune_chipset(drive, speed);

- return 0;
+ return ide_dma_enable(drive);
}

/**
@@ -523,7 +513,7 @@ static int it821x_config_drive_for_dma (ide_drive_t *drive)
if (ide_use_dma(drive) && config_chipset_for_dma(drive))
return 0;

- config_it821x_chipset_for_pio(drive, 1);
+ it821x_tuneproc(drive, 255);

return -1;
}
diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index ace9892..2da5cbb 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -255,9 +255,6 @@ static int config_chipset_for_dma(ide_drive_t *drive)
printk(KERN_WARNING "%s reduced to Ultra33 mode.\n", drive->name);
}

- if (drive->media != ide_disk && drive->media != ide_cdrom)
- return 0;
-
if (id->capability & 4) {
/*
* Set IORDY_EN & PREFETCH_EN (this seems to have
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index 71eccdf..c0188de 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -1,5 +1,5 @@
/*
- * linux/drivers/ide/pci/siimage.c Version 1.11 Jan 27, 2007
+ * linux/drivers/ide/pci/siimage.c Version 1.12 Mar 10 2007
*
* Copyright (C) 2001-2002 Andre Hedrick <andre@linux-ide.org>
* Copyright (C) 2003 Red Hat <alan@redhat.com>
@@ -287,11 +287,6 @@ static void config_siimage_chipset_for_pio (ide_drive_t *drive, byte set_speed)
(void) ide_config_drive_speed(drive, speed);
}

-static void config_chipset_for_pio (ide_drive_t *drive, byte set_speed)
-{
- config_siimage_chipset_for_pio(drive, set_speed);
-}
-
/**
* siimage_tune_chipset - set controller timings
* @drive: Drive to set up
@@ -396,8 +391,6 @@ static int config_chipset_for_dma (ide_drive_t *drive)
{
u8 speed = ide_dma_speed(drive, siimage_ratemask(drive));

- config_chipset_for_pio(drive, !speed);
-
if (!speed)
return 0;

@@ -423,7 +416,7 @@ static int siimage_config_drive_for_dma (ide_drive_t *drive)
return 0;

if (ide_use_fast_pio(drive))
- config_chipset_for_pio(drive, 1);
+ config_siimage_chipset_for_pio(drive, 1);

return -1;
}
@@ -1015,7 +1008,6 @@ static void __devinit init_hwif_siimage(ide_hwif_t *hwif)

hwif->ultra_mask = 0x7f;
hwif->mwdma_mask = 0x07;
- hwif->swdma_mask = 0x07;

if (!is_sata(hwif))
hwif->atapi_dma = 1;
diff --git a/drivers/ide/pci/sl82c105.c b/drivers/ide/pci/sl82c105.c
index 3a8a76f..fe3b4b9 100644
--- a/drivers/ide/pci/sl82c105.c
+++ b/drivers/ide/pci/sl82c105.c
@@ -11,6 +11,8 @@
* Merge in Russell's HW workarounds, fix various problems
* with the timing registers setup.
* -- Benjamin Herrenschmidt (01/11/03) benh@kernel.crashing.org
+ *
+ * Copyright (C) 2006-2007 MontaVista Software, Inc. <source@mvista.com>
*/

#include <linux/types.h>
@@ -47,25 +49,19 @@
#define CTRL_P0EN (1 << 0)

/*
- * Convert a PIO mode and cycle time to the required on/off
- * times for the interface. This has protection against run-away
- * timings.
+ * Convert a PIO mode and cycle time to the required on/off times
+ * for the interface. This has protection against runaway timings.
*/
-static unsigned int get_timing_sl82c105(ide_pio_data_t *p)
+static unsigned int get_pio_timings(ide_pio_data_t *p)
{
- unsigned int cmd_on;
- unsigned int cmd_off;
+ unsigned int cmd_on, cmd_off;

- cmd_on = (ide_pio_timings[p->pio_mode].active_time + 29) / 30;
+ cmd_on = (ide_pio_timings[p->pio_mode].active_time + 29) / 30;
cmd_off = (p->cycle_time - 30 * cmd_on + 29) / 30;

- if (cmd_on > 32)
- cmd_on = 32;
if (cmd_on == 0)
cmd_on = 1;

- if (cmd_off > 32)
- cmd_off = 32;
if (cmd_off == 0)
cmd_off = 1;

@@ -73,100 +69,59 @@ static unsigned int get_timing_sl82c105(ide_pio_data_t *p)
}

/*
- * Configure the drive and chipset for PIO
+ * Configure the chipset for PIO mode.
*/
-static void config_for_pio(ide_drive_t *drive, int pio, int report, int chipset_only)
+static u8 sl82c105_tune_pio(ide_drive_t *drive, u8 pio)
{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
+ struct pci_dev *dev = HWIF(drive)->pci_dev;
+ int reg = 0x44 + drive->dn * 4;
ide_pio_data_t p;
- u16 drv_ctrl = 0x909;
- unsigned int xfer_mode, reg;
+ u16 drv_ctrl;

- DBG(("config_for_pio(drive:%s, pio:%d, report:%d, chipset_only:%d)\n",
- drive->name, pio, report, chipset_only));
-
- reg = (hwif->channel ? 0x4c : 0x44) + (drive->select.b.unit ? 4 : 0);
+ DBG(("sl82c105_tune_pio(drive:%s, pio:%u)\n", drive->name, pio));

pio = ide_get_best_pio_mode(drive, pio, 5, &p);

- xfer_mode = XFER_PIO_0 + pio;
-
- if (chipset_only || ide_config_drive_speed(drive, xfer_mode) == 0) {
- drv_ctrl = get_timing_sl82c105(&p);
- drive->pio_speed = xfer_mode;
- } else
- drive->pio_speed = XFER_PIO_0;
+ drive->drive_data = drv_ctrl = get_pio_timings(&p);

- if (drive->using_dma == 0) {
+ if (!drive->using_dma) {
/*
* If we are actually using MW DMA, then we can not
* reprogram the interface drive control register.
*/
- pci_write_config_word(dev, reg, drv_ctrl);
- pci_read_config_word(dev, reg, &drv_ctrl);
-
- if (report) {
- printk("%s: selected %s (%dns) (%04X)\n", drive->name,
- ide_xfer_verbose(xfer_mode), p.cycle_time, drv_ctrl);
- }
+ pci_write_config_word(dev, reg, drv_ctrl);
+ pci_read_config_word (dev, reg, &drv_ctrl);
}
+
+ printk(KERN_DEBUG "%s: selected %s (%dns) (%04X)\n", drive->name,
+ ide_xfer_verbose(pio + XFER_PIO_0), p.cycle_time, drv_ctrl);
+
+ return pio;
}

/*
- * Configure the drive and the chipset for DMA
+ * Configure the drive for DMA.
+ * We'll program the chipset only when DMA is actually turned on.
*/
-static int config_for_dma (ide_drive_t *drive)
+static int config_for_dma(ide_drive_t *drive)
{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
- unsigned int reg;
-
DBG(("config_for_dma(drive:%s)\n", drive->name));

- reg = (hwif->channel ? 0x4c : 0x44) + (drive->select.b.unit ? 4 : 0);
-
if (ide_config_drive_speed(drive, XFER_MW_DMA_2) != 0)
- return 1;
+ return 0;

- pci_write_config_word(dev, reg, 0x0240);
-
- return 0;
+ return ide_dma_enable(drive);
}

/*
- * Check to see if the drive and
- * chipset is capable of DMA mode
+ * Check to see if the drive and chipset are capable of DMA mode.
*/
-
-static int sl82c105_check_drive (ide_drive_t *drive)
+static int sl82c105_ide_dma_check(ide_drive_t *drive)
{
- ide_hwif_t *hwif = HWIF(drive);
-
- DBG(("sl82c105_check_drive(drive:%s)\n", drive->name));
-
- do {
- struct hd_driveid *id = drive->id;
-
- if (!drive->autodma)
- break;
-
- if (!id || !(id->capability & 1))
- break;
+ DBG(("sl82c105_ide_dma_check(drive:%s)\n", drive->name));

- /* Consult the list of known "bad" drives */
- if (__ide_dma_bad_drive(drive))
- break;
-
- if (id->field_valid & 2) {
- if ((id->dma_mword & hwif->mwdma_mask) ||
- (id->dma_1word & hwif->swdma_mask))
- return 0;
- }
-
- if (__ide_dma_good_drive(drive) && id->eide_dma_time < 150)
- return 0;
- } while (0);
+ if (ide_use_dma(drive) && config_for_dma(drive))
+ return 0;

return -1;
}
@@ -195,14 +150,14 @@ static inline void sl82c105_reset_host(struct pci_dev *dev)
* This function is called when the IDE timer expires, the drive
* indicates that it is READY, and we were waiting for DMA to complete.
*/
-static int sl82c105_ide_dma_lost_irq(ide_drive_t *drive)
+static int sl82c105_ide_dma_lostirq(ide_drive_t *drive)
{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
- u32 val, mask = hwif->channel ? CTRL_IDE_IRQB : CTRL_IDE_IRQA;
- unsigned long dma_base = hwif->dma_base;
+ ide_hwif_t *hwif = HWIF(drive);
+ struct pci_dev *dev = hwif->pci_dev;
+ u32 val, mask = hwif->channel ? CTRL_IDE_IRQB : CTRL_IDE_IRQA;
+ u8 dma_cmd;

- printk("sl82c105: lost IRQ: resetting host\n");
+ printk("sl82c105: lost IRQ, resetting host\n");

/*
* Check the raw interrupt from the drive.
@@ -215,15 +170,15 @@ static int sl82c105_ide_dma_lost_irq(ide_drive_t *drive)
* Was DMA enabled? If so, disable it - we're resetting the
* host. The IDE layer will be handling the drive for us.
*/
- val = inb(dma_base);
- if (val & 1) {
- outb(val & ~1, dma_base);
+ dma_cmd = inb(hwif->dma_command);
+ if (dma_cmd & 1) {
+ outb(dma_cmd & ~1, hwif->dma_command);
printk("sl82c105: DMA was enabled\n");
}

sl82c105_reset_host(dev);

- /* ide_dmaproc would return 1, so we do as well */
+ /* __ide_dma_lostirq would return 1, so we do as well */
return 1;
}

@@ -235,10 +190,10 @@ static int sl82c105_ide_dma_lost_irq(ide_drive_t *drive)
* The generic IDE core will have disabled the BMEN bit before this
* function is called.
*/
-static void sl82c105_ide_dma_start(ide_drive_t *drive)
+static void sl82c105_dma_start(ide_drive_t *drive)
{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
+ ide_hwif_t *hwif = HWIF(drive);
+ struct pci_dev *dev = hwif->pci_dev;

sl82c105_reset_host(dev);
ide_dma_start(drive);
@@ -246,8 +201,8 @@ static void sl82c105_ide_dma_start(ide_drive_t *drive)

static int sl82c105_ide_dma_timeout(ide_drive_t *drive)
{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
+ ide_hwif_t *hwif = HWIF(drive);
+ struct pci_dev *dev = hwif->pci_dev;

DBG(("sl82c105_ide_dma_timeout(drive:%s)\n", drive->name));

@@ -255,26 +210,32 @@ static int sl82c105_ide_dma_timeout(ide_drive_t *drive)
return __ide_dma_timeout(drive);
}

-static int sl82c105_ide_dma_on (ide_drive_t *drive)
+static int sl82c105_ide_dma_on(ide_drive_t *drive)
{
+ struct pci_dev *dev = HWIF(drive)->pci_dev;
+ int rc, reg = 0x44 + drive->dn * 4;
+
DBG(("sl82c105_ide_dma_on(drive:%s)\n", drive->name));

- if (config_for_dma(drive))
- return 1;
- printk(KERN_INFO "%s: DMA enabled\n", drive->name);
- return __ide_dma_on(drive);
+ rc = __ide_dma_on(drive);
+ if (rc == 0) {
+ pci_write_config_word(dev, reg, 0x0200);
+
+ printk(KERN_INFO "%s: DMA enabled\n", drive->name);
+ }
+ return rc;
}

static void sl82c105_dma_off_quietly(ide_drive_t *drive)
{
- u8 speed = XFER_PIO_0;
+ struct pci_dev *dev = HWIF(drive)->pci_dev;
+ int reg = 0x44 + drive->dn * 4;

DBG(("sl82c105_dma_off_quietly(drive:%s)\n", drive->name));

+ pci_write_config_word(dev, reg, drive->drive_data);
+
ide_dma_off_quietly(drive);
- if (drive->pio_speed)
- speed = drive->pio_speed - XFER_PIO_0;
- config_for_pio(drive, speed, 0, 1);
}

/*
@@ -286,8 +247,8 @@ static void sl82c105_dma_off_quietly(ide_drive_t *drive)
*/
static void sl82c105_selectproc(ide_drive_t *drive)
{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
+ ide_hwif_t *hwif = HWIF(drive);
+ struct pci_dev *dev = hwif->pci_dev;
u32 val, old, mask;

//DBG(("sl82c105_selectproc(drive:%s)\n", drive->name));
@@ -323,18 +284,12 @@ static void sl82c105_resetproc(ide_drive_t *drive)
* We only deal with PIO mode here - DMA mode 'using_dma' is not
* initialised at the point that this function is called.
*/
-static void tune_sl82c105(ide_drive_t *drive, u8 pio)
+static void sl82c105_tune_drive(ide_drive_t *drive, u8 pio)
{
- DBG(("tune_sl82c105(drive:%s)\n", drive->name));
-
- config_for_pio(drive, pio, 1, 0);
+ DBG(("sl82c105_tune_drive(drive:%s, pio:%u)\n", drive->name, pio));

- /*
- * We support 32-bit I/O on this interface, and it
- * doesn't have problems with interrupts.
- */
- drive->io_32bit = 1;
- drive->unmask = 1;
+ pio = sl82c105_tune_pio(drive, pio);
+ (void) ide_config_drive_speed(drive, XFER_PIO_0 + pio);
}

/*
@@ -393,7 +348,7 @@ static unsigned int __devinit init_chipset_sl82c105(struct pci_dev *dev, const c
}

/*
- * Initialise the chip
+ * Initialise IDE channel
*/
static void __devinit init_hwif_sl82c105(ide_hwif_t *hwif)
{
@@ -401,24 +356,22 @@ static void __devinit init_hwif_sl82c105(ide_hwif_t *hwif)

DBG(("init_hwif_sl82c105(hwif: ide%d)\n", hwif->index));

- hwif->tuneproc = tune_sl82c105;
- hwif->selectproc = sl82c105_selectproc;
- hwif->resetproc = sl82c105_resetproc;
+ hwif->tuneproc = &sl82c105_tune_drive;
+ hwif->selectproc = &sl82c105_selectproc;
+ hwif->resetproc = &sl82c105_resetproc;
+
+ /*
+ * We support 32-bit I/O on this interface, and
+ * it doesn't have problems with interrupts.
+ */
+ hwif->drives[0].io_32bit = hwif->drives[1].io_32bit = 1;
+ hwif->drives[0].unmask = hwif->drives[1].unmask = 1;

/*
- * Default to PIO 0 for fallback unless tuned otherwise.
* We always autotune PIO, this is done before DMA is checked,
* so there's no risk of accidentally disabling DMA
*/
- hwif->drives[0].pio_speed = XFER_PIO_0;
- hwif->drives[0].autotune = 1;
- hwif->drives[1].pio_speed = XFER_PIO_0;
- hwif->drives[1].autotune = 1;
-
- hwif->atapi_dma = 0;
- hwif->mwdma_mask = 0;
- hwif->swdma_mask = 0;
- hwif->autodma = 0;
+ hwif->drives[0].autotune = hwif->drives[1].autotune = 1;

if (!hwif->dma_base)
return;
@@ -429,27 +382,27 @@ static void __devinit init_hwif_sl82c105(ide_hwif_t *hwif)
* Never ever EVER under any circumstances enable
* DMA when the bridge is this old.
*/
- printk(" %s: Winbond 553 bridge revision %d, BM-DMA disabled\n",
- hwif->name, rev);
- } else {
- hwif->atapi_dma = 1;
- hwif->mwdma_mask = 0x04;
-
- hwif->ide_dma_check = &sl82c105_check_drive;
- hwif->ide_dma_on = &sl82c105_ide_dma_on;
- hwif->dma_off_quietly = &sl82c105_dma_off_quietly;
- hwif->ide_dma_lostirq = &sl82c105_ide_dma_lost_irq;
- hwif->dma_start = &sl82c105_ide_dma_start;
- hwif->ide_dma_timeout = &sl82c105_ide_dma_timeout;
-
- if (!noautodma)
- hwif->autodma = 1;
- hwif->drives[0].autodma = hwif->autodma;
- hwif->drives[1].autodma = hwif->autodma;
-
- if (hwif->mate)
- hwif->serialized = hwif->mate->serialized = 1;
+ printk(" %s: Winbond W83C553 bridge revision %d, "
+ "BM-DMA disabled\n", hwif->name, rev);
+ return;
}
+
+ hwif->atapi_dma = 1;
+ hwif->mwdma_mask = 0x04;
+
+ hwif->ide_dma_check = &sl82c105_ide_dma_check;
+ hwif->ide_dma_on = &sl82c105_ide_dma_on;
+ hwif->dma_off_quietly = &sl82c105_dma_off_quietly;
+ hwif->ide_dma_lostirq = &sl82c105_ide_dma_lostirq;
+ hwif->dma_start = &sl82c105_dma_start;
+ hwif->ide_dma_timeout = &sl82c105_ide_dma_timeout;
+
+ if (!noautodma)
+ hwif->autodma = 1;
+ hwif->drives[0].autodma = hwif->drives[1].autodma = hwif->autodma;
+
+ if (hwif->mate)
+ hwif->serialized = hwif->mate->serialized = 1;
}

static ide_pci_device_t sl82c105_chipset __devinitdata = {
diff --git a/include/linux/ide.h b/include/linux/ide.h
index d3bbc71..418dfb5 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -613,7 +613,6 @@ typedef struct ide_drive_s {

u8 quirk_list; /* considered quirky, set for a specific host */
u8 init_speed; /* transfer rate set at boot */
- u8 pio_speed; /* unused by core, used by some drivers for fallback from DMA */
u8 current_speed; /* current transfer rate set */
u8 desired_speed; /* desired transfer rate set */
u8 dn; /* now wide spread use */
-
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