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ide: convert ide_find_best_mode() users to use ide_max_dma_mode()
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ide-timing.h:

* remove handling of DMA modes from ide_find_best_mode() and rename it to
  ide_find_best_pio_mode()

* drop no longer needed "map" argument from ide_find_best_pio_mode()
  and delete needless ->id check

* remove no longer needed XFER_SWDMA and XFER_UDMA* defines

au1xxx-ide.c:

* use ide_max_dma_mode() instead of ide_find_best_mode()

* remove needless CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA #ifdef

amd74xx.c:

* store UDMA masks in amd_ide_chip[] and while at it make "base" field
  to be u8 instead of unsigned long

* convert the driver to use UDMA masks from amd_ide_chip[]

* use ide_max_dma_mode() and ide_find_best_pio_mode() instead
  of ide_find_best_mode()

* delete stale comment from amd74xx_ide_dma_check()

* remove no longer needed AMD_UDMA* defines

via82cxxx.c:

* remove unused DISPLAY_VIA_TIMINGS define

* store UDMA masks in via_isa_bridges[] and while at it make "flags" field
  to be u8 instead of u16

* convert the driver to use UDMA masks from via_isa_bridges[]

* use ide_max_dma_mode() and ide_find_best_pio_mode() instead
  of ide_find_best_mode()

* remove no longer needed VIA_UDMA* defines

pmac.c:

* use ide_max_dma_mode() instead of ide_find_best_mode()

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Reviewed-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
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Bartlomiej Zolnierkiewicz committed Jul 9, 2007
1 parent 15a4f94 commit 75b1d97
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Showing 5 changed files with 123 additions and 215 deletions.
56 changes: 3 additions & 53 deletions drivers/ide/ide-timing.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -102,66 +102,16 @@ static struct ide_timing ide_timing[] = {
#define EZ(v,unit) ((v)?ENOUGH(v,unit):0)

#define XFER_MODE 0xf0
#define XFER_UDMA_133 0x48
#define XFER_UDMA_100 0x44
#define XFER_UDMA_66 0x42
#define XFER_UDMA 0x40
#define XFER_MWDMA 0x20
#define XFER_SWDMA 0x10
#define XFER_EPIO 0x01
#define XFER_PIO 0x00

static short ide_find_best_mode(ide_drive_t *drive, int map)
static short ide_find_best_pio_mode(ide_drive_t *drive)
{
struct hd_driveid *id = drive->id;
short best = 0;

if (!id)
return XFER_PIO_SLOW;

if ((map & XFER_UDMA) && (id->field_valid & 4)) { /* Want UDMA and UDMA bitmap valid */

if ((map & XFER_UDMA_133) == XFER_UDMA_133)
if ((best = (id->dma_ultra & 0x0040) ? XFER_UDMA_6 : 0)) return best;

if ((map & XFER_UDMA_100) == XFER_UDMA_100)
if ((best = (id->dma_ultra & 0x0020) ? XFER_UDMA_5 : 0)) return best;

if ((map & XFER_UDMA_66) == XFER_UDMA_66)
if ((best = (id->dma_ultra & 0x0010) ? XFER_UDMA_4 :
(id->dma_ultra & 0x0008) ? XFER_UDMA_3 : 0)) return best;

if ((best = (id->dma_ultra & 0x0004) ? XFER_UDMA_2 :
(id->dma_ultra & 0x0002) ? XFER_UDMA_1 :
(id->dma_ultra & 0x0001) ? XFER_UDMA_0 : 0)) return best;
}

if ((map & XFER_MWDMA) && (id->field_valid & 2)) { /* Want MWDMA and drive has EIDE fields */

if ((best = (id->dma_mword & 0x0004) ? XFER_MW_DMA_2 :
(id->dma_mword & 0x0002) ? XFER_MW_DMA_1 :
(id->dma_mword & 0x0001) ? XFER_MW_DMA_0 : 0)) return best;
}

if (map & XFER_SWDMA) { /* Want SWDMA */

if (id->field_valid & 2) { /* EIDE SWDMA */

if ((best = (id->dma_1word & 0x0004) ? XFER_SW_DMA_2 :
(id->dma_1word & 0x0002) ? XFER_SW_DMA_1 :
(id->dma_1word & 0x0001) ? XFER_SW_DMA_0 : 0)) return best;
}

if (id->capability & 1) { /* Pre-EIDE style SWDMA */

if ((best = (id->tDMA == 2) ? XFER_SW_DMA_2 :
(id->tDMA == 1) ? XFER_SW_DMA_1 :
(id->tDMA == 0) ? XFER_SW_DMA_0 : 0)) return best;
}
}


if ((map & XFER_EPIO) && (id->field_valid & 2)) { /* EIDE PIO modes */
if (id->field_valid & 2) { /* EIDE PIO modes */

if ((best = (drive->id->eide_pio_modes & 4) ? XFER_PIO_5 :
(drive->id->eide_pio_modes & 2) ? XFER_PIO_4 :
Expand Down Expand Up @@ -262,7 +212,7 @@ static int ide_timing_compute(ide_drive_t *drive, short speed, struct ide_timing
*/

if ((speed & XFER_MODE) != XFER_PIO) {
ide_timing_compute(drive, ide_find_best_mode(drive, XFER_PIO | XFER_EPIO), &p, T, UT);
ide_timing_compute(drive, ide_find_best_pio_mode(drive), &p, T, UT);
ide_timing_merge(&p, t, t, IDE_TIMING_ALL);
}

Expand Down
7 changes: 1 addition & 6 deletions drivers/ide/mips/au1xxx-ide.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -381,9 +381,7 @@ static int auide_dma_setup(ide_drive_t *drive)

static int auide_dma_check(ide_drive_t *drive)
{
u8 speed;

#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA
u8 speed = ide_max_dma_mode(drive);

if( dbdma_init_done == 0 ){
auide_hwif.white_list = ide_in_drive_list(drive->id,
Expand All @@ -394,7 +392,6 @@ static int auide_dma_check(ide_drive_t *drive)
auide_ddma_init(&auide_hwif);
dbdma_init_done = 1;
}
#endif

/* Is the drive in our DMA black list? */

Expand All @@ -409,8 +406,6 @@ static int auide_dma_check(ide_drive_t *drive)
else
drive->using_dma = 1;

speed = ide_find_best_mode(drive, XFER_PIO | XFER_MWDMA);

if (drive->autodma && (speed & XFER_MODE) != XFER_PIO)
return 0;

Expand Down
118 changes: 54 additions & 64 deletions drivers/ide/pci/amd74xx.c
View file
Original file line number Diff line number Diff line change
@@ -1,10 +1,11 @@
/*
* Version 2.16
* Version 2.20
*
* AMD 755/756/766/8111 and nVidia nForce/2/2s/3/3s/CK804/MCP04
* IDE driver for Linux.
*
* Copyright (c) 2000-2002 Vojtech Pavlik
* Copyright (c) 2007 Bartlomiej Zolnierkiewicz
*
* Based on the work of:
* Andre Hedrick
Expand Down Expand Up @@ -37,11 +38,6 @@
#define AMD_ADDRESS_SETUP (0x0c + amd_config->base)
#define AMD_UDMA_TIMING (0x10 + amd_config->base)

#define AMD_UDMA 0x07
#define AMD_UDMA_33 0x01
#define AMD_UDMA_66 0x02
#define AMD_UDMA_100 0x03
#define AMD_UDMA_133 0x04
#define AMD_CHECK_SWDMA 0x08
#define AMD_BAD_SWDMA 0x10
#define AMD_BAD_FIFO 0x20
Expand All @@ -53,32 +49,33 @@

static struct amd_ide_chip {
unsigned short id;
unsigned long base;
unsigned char flags;
u8 base;
u8 udma_mask;
u8 flags;
} amd_ide_chips[] = {
{ PCI_DEVICE_ID_AMD_COBRA_7401, 0x40, AMD_UDMA_33 | AMD_BAD_SWDMA },
{ PCI_DEVICE_ID_AMD_VIPER_7409, 0x40, AMD_UDMA_66 | AMD_CHECK_SWDMA },
{ PCI_DEVICE_ID_AMD_VIPER_7411, 0x40, AMD_UDMA_100 | AMD_BAD_FIFO },
{ PCI_DEVICE_ID_AMD_OPUS_7441, 0x40, AMD_UDMA_100 },
{ PCI_DEVICE_ID_AMD_8111_IDE, 0x40, AMD_UDMA_133 | AMD_CHECK_SERENADE },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_IDE, 0x50, AMD_UDMA_100 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE2S_IDE, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE3_IDE, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE3S_IDE, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_IDE, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_IDE, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP65_IDE, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP67_IDE, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP73_IDE, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP77_IDE, 0x50, AMD_UDMA_133 },
{ PCI_DEVICE_ID_AMD_CS5536_IDE, 0x40, AMD_UDMA_100 },
{ PCI_DEVICE_ID_AMD_COBRA_7401, 0x40, ATA_UDMA2, AMD_BAD_SWDMA },
{ PCI_DEVICE_ID_AMD_VIPER_7409, 0x40, ATA_UDMA4, AMD_CHECK_SWDMA },
{ PCI_DEVICE_ID_AMD_VIPER_7411, 0x40, ATA_UDMA5, AMD_BAD_FIFO },
{ PCI_DEVICE_ID_AMD_OPUS_7441, 0x40, ATA_UDMA5, },
{ PCI_DEVICE_ID_AMD_8111_IDE, 0x40, ATA_UDMA6, AMD_CHECK_SERENADE },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_IDE, 0x50, ATA_UDMA5, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE2S_IDE, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE2S_SATA, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE3_IDE, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE3S_IDE, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE3S_SATA2, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_IDE, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_IDE, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP65_IDE, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP67_IDE, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP73_IDE, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_NVIDIA_NFORCE_MCP77_IDE, 0x50, ATA_UDMA6, },
{ PCI_DEVICE_ID_AMD_CS5536_IDE, 0x40, ATA_UDMA5, },
{ 0 }
};

Expand All @@ -87,7 +84,7 @@ static ide_pci_device_t *amd_chipset;
static unsigned int amd_80w;
static unsigned int amd_clock;

static char *amd_dma[] = { "MWDMA16", "UDMA33", "UDMA66", "UDMA100", "UDMA133" };
static char *amd_dma[] = { "16", "25", "33", "44", "66", "100", "133" };
static unsigned char amd_cyc2udma[] = { 6, 6, 5, 4, 0, 1, 1, 2, 2, 3, 3, 3, 3, 3, 3, 7 };

/*
Expand Down Expand Up @@ -128,7 +125,7 @@ static int amd74xx_get_info(char *buffer, char **addr, off_t offset, int count)

pci_read_config_byte(dev, PCI_REVISION_ID, &t);
amd_print("Revision: IDE %#x", t);
amd_print("Highest DMA rate: %s", amd_dma[amd_config->flags & AMD_UDMA]);
amd_print("Highest DMA rate: UDMA%s", amd_dma[fls(amd_config->udma_mask) - 1]);

amd_print("BM-DMA base: %#lx", amd_base);
amd_print("PCI clock: %d.%dMHz", amd_clock / 1000, amd_clock / 100 % 10);
Expand Down Expand Up @@ -221,12 +218,12 @@ static void amd_set_speed(struct pci_dev *dev, unsigned char dn, struct ide_timi
pci_write_config_byte(dev, AMD_DRIVE_TIMING + (3 - dn),
((FIT(timing->active, 1, 16) - 1) << 4) | (FIT(timing->recover, 1, 16) - 1));

switch (amd_config->flags & AMD_UDMA) {
case AMD_UDMA_33: t = timing->udma ? (0xc0 | (FIT(timing->udma, 2, 5) - 2)) : 0x03; break;
case AMD_UDMA_66: t = timing->udma ? (0xc0 | amd_cyc2udma[FIT(timing->udma, 2, 10)]) : 0x03; break;
case AMD_UDMA_100: t = timing->udma ? (0xc0 | amd_cyc2udma[FIT(timing->udma, 1, 10)]) : 0x03; break;
case AMD_UDMA_133: t = timing->udma ? (0xc0 | amd_cyc2udma[FIT(timing->udma, 1, 15)]) : 0x03; break;
default: return;
switch (amd_config->udma_mask) {
case ATA_UDMA2: t = timing->udma ? (0xc0 | (FIT(timing->udma, 2, 5) - 2)) : 0x03; break;
case ATA_UDMA4: t = timing->udma ? (0xc0 | amd_cyc2udma[FIT(timing->udma, 2, 10)]) : 0x03; break;
case ATA_UDMA5: t = timing->udma ? (0xc0 | amd_cyc2udma[FIT(timing->udma, 1, 10)]) : 0x03; break;
case ATA_UDMA6: t = timing->udma ? (0xc0 | amd_cyc2udma[FIT(timing->udma, 1, 15)]) : 0x03; break;
default: return;
}

pci_write_config_byte(dev, AMD_UDMA_TIMING + (3 - dn), t);
Expand All @@ -248,7 +245,7 @@ static int amd_set_drive(ide_drive_t *drive, u8 speed)
ide_config_drive_speed(drive, speed);

T = 1000000000 / amd_clock;
UT = T / min_t(int, max_t(int, amd_config->flags & AMD_UDMA, 1), 2);
UT = (amd_config->udma_mask == ATA_UDMA2) ? T : (T / 2);

ide_timing_compute(drive, speed, &t, T, UT);

Expand Down Expand Up @@ -277,29 +274,19 @@ static int amd_set_drive(ide_drive_t *drive, u8 speed)
static void amd74xx_tune_drive(ide_drive_t *drive, u8 pio)
{
if (pio == 255) {
amd_set_drive(drive, ide_find_best_mode(drive, XFER_PIO | XFER_EPIO));
amd_set_drive(drive, ide_find_best_pio_mode(drive));
return;
}

amd_set_drive(drive, XFER_PIO_0 + min_t(byte, pio, 5));
}

/*
* amd74xx_dmaproc() is a callback from upper layers that can do
* a lot, but we use it for DMA/PIO tuning only, delegating everything
* else to the default ide_dmaproc().
*/

static int amd74xx_ide_dma_check(ide_drive_t *drive)
{
int w80 = HWIF(drive)->udma_four;
u8 speed = ide_max_dma_mode(drive);

u8 speed = ide_find_best_mode(drive,
XFER_PIO | XFER_EPIO | XFER_MWDMA | XFER_UDMA |
((amd_config->flags & AMD_BAD_SWDMA) ? 0 : XFER_SWDMA) |
(w80 && (amd_config->flags & AMD_UDMA) >= AMD_UDMA_66 ? XFER_UDMA_66 : 0) |
(w80 && (amd_config->flags & AMD_UDMA) >= AMD_UDMA_100 ? XFER_UDMA_100 : 0) |
(w80 && (amd_config->flags & AMD_UDMA) >= AMD_UDMA_133 ? XFER_UDMA_133 : 0));
if (speed == 0)
speed = ide_find_best_pio_mode(drive);

amd_set_drive(drive, speed);

Expand Down Expand Up @@ -334,10 +321,10 @@ static unsigned int __devinit init_chipset_amd74xx(struct pci_dev *dev, const ch
* Check 80-wire cable presence.
*/

switch (amd_config->flags & AMD_UDMA) {
switch (amd_config->udma_mask) {

case AMD_UDMA_133:
case AMD_UDMA_100:
case ATA_UDMA6:
case ATA_UDMA5:
pci_read_config_byte(dev, AMD_CABLE_DETECT, &t);
pci_read_config_dword(dev, AMD_UDMA_TIMING, &u);
amd_80w = ((t & 0x3) ? 1 : 0) | ((t & 0xc) ? 2 : 0);
Expand All @@ -349,7 +336,7 @@ static unsigned int __devinit init_chipset_amd74xx(struct pci_dev *dev, const ch
}
break;

case AMD_UDMA_66:
case ATA_UDMA4:
/* no host side cable detection */
amd_80w = 0x03;
break;
Expand All @@ -370,7 +357,7 @@ static unsigned int __devinit init_chipset_amd74xx(struct pci_dev *dev, const ch
if ((amd_config->flags & AMD_CHECK_SERENADE) &&
dev->subsystem_vendor == PCI_VENDOR_ID_AMD &&
dev->subsystem_device == PCI_DEVICE_ID_AMD_SERENADE)
amd_config->flags = AMD_UDMA_100;
amd_config->udma_mask = ATA_UDMA5;

/*
* Determine the system bus clock.
Expand All @@ -395,8 +382,9 @@ static unsigned int __devinit init_chipset_amd74xx(struct pci_dev *dev, const ch
*/

pci_read_config_byte(dev, PCI_REVISION_ID, &t);
printk(KERN_INFO "%s: %s (rev %02x) %s controller\n",
amd_chipset->name, pci_name(dev), t, amd_dma[amd_config->flags & AMD_UDMA]);
printk(KERN_INFO "%s: %s (rev %02x) UDMA%s controller\n",
amd_chipset->name, pci_name(dev), t,
amd_dma[fls(amd_config->udma_mask) - 1]);

/*
* Register /proc/ide/amd74xx entry
Expand Down Expand Up @@ -437,9 +425,11 @@ static void __devinit init_hwif_amd74xx(ide_hwif_t *hwif)
return;

hwif->atapi_dma = 1;
hwif->ultra_mask = 0x7f;
hwif->mwdma_mask = 0x07;
hwif->swdma_mask = 0x07;

hwif->ultra_mask = amd_config->udma_mask;
hwif->mwdma_mask = 0x07;
if ((amd_config->flags & AMD_BAD_SWDMA) == 0)
hwif->swdma_mask = 0x07;

if (!hwif->udma_four)
hwif->udma_four = (amd_80w >> hwif->channel) & 1;
Expand Down
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