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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2007-07-20 01:11:58 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2007-07-20 01:11:58 +0200
commit6a824c92db4d606c324272c4eed366fb71672440 (patch)
tree72b398062fd582b85507b665120f0a5315548eaf
parent2134758d2a5429325cee4d4ce8959af5314eeba1 (diff)
downloadlinux-linaro-6a824c92db4d606c324272c4eed366fb71672440.tar.gz
ide: remove ide_find_best_pio_mode()
* Add ->host_flags to ide_hwif_t to store ide_pci_device_t.host_flags, assign it in setup-pci.c:ide_pci_setup_ports(). * Add IDE_HFLAG_PIO_NO_{BLACKLIST,DOWNGRADE} to ide_pci_device_t.host_flags and teach ide_get_best_pio_mode() about them. Also remove needless !drive->id check while at it (drive->id is always present). * Convert amd74xx, via82cxxx and ide-timing.h to use ide_get_best_pio_mode() and then remove no longer needed ide_find_best_pio_mode(). There should be no functionality changes caused by this patch. Acked-by: Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
-rw-r--r--drivers/ide/ide-lib.c13
-rw-r--r--drivers/ide/ide-timing.h18
-rw-r--r--drivers/ide/ide.c2
-rw-r--r--drivers/ide/pci/amd74xx.c20
-rw-r--r--drivers/ide/pci/via82cxxx.c22
-rw-r--r--drivers/ide/setup-pci.c2
-rw-r--r--include/linux/ide.h7
7 files changed, 45 insertions, 39 deletions
diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index df29868209f..92a6c7bcf52 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -291,11 +291,11 @@ u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode)
struct hd_driveid* id = drive->id;
int overridden = 0;
- if (mode_wanted != 255) {
- pio_mode = mode_wanted;
- } else if (!drive->id) {
- pio_mode = 0;
- } else if ((pio_mode = ide_scan_pio_blacklist(id->model)) != -1) {
+ if (mode_wanted != 255)
+ return min_t(u8, mode_wanted, max_mode);
+
+ if ((drive->hwif->host_flags & IDE_HFLAG_PIO_NO_BLACKLIST) == 0 &&
+ (pio_mode = ide_scan_pio_blacklist(id->model)) != -1) {
printk(KERN_INFO "%s: is on PIO blacklist\n", drive->name);
} else {
pio_mode = id->tPIO;
@@ -324,7 +324,8 @@ u8 ide_get_best_pio_mode (ide_drive_t *drive, u8 mode_wanted, u8 max_mode)
/*
* Conservative "downgrade" for all pre-ATA2 drives
*/
- if (pio_mode && pio_mode < 4) {
+ if ((drive->hwif->host_flags & IDE_HFLAG_PIO_NO_DOWNGRADE) == 0 &&
+ pio_mode && pio_mode < 4) {
pio_mode--;
printk(KERN_INFO "%s: applying conservative "
"PIO \"downgrade\"\n", drive->name);
diff --git a/drivers/ide/ide-timing.h b/drivers/ide/ide-timing.h
index 9b5afebafbf..daffbb9797e 100644
--- a/drivers/ide/ide-timing.h
+++ b/drivers/ide/ide-timing.h
@@ -106,21 +106,6 @@ static struct ide_timing ide_timing[] = {
#define XFER_EPIO 0x01
#define XFER_PIO 0x00
-static short ide_find_best_pio_mode(ide_drive_t *drive)
-{
- struct hd_driveid *id = drive->id;
- short best = 0;
-
- /* EIDE PIO modes */
- if ((id->field_valid & 2) && (id->capability & 8)) {
- if ((best = (drive->id->eide_pio_modes & 4) ? XFER_PIO_5 :
- (drive->id->eide_pio_modes & 2) ? XFER_PIO_4 :
- (drive->id->eide_pio_modes & 1) ? XFER_PIO_3 : 0)) return best;
- }
-
- return XFER_PIO_0 + min_t(u8, id->tPIO, 2);
-}
-
static void ide_timing_quantize(struct ide_timing *t, struct ide_timing *q, int T, int UT)
{
q->setup = EZ(t->setup * 1000, T);
@@ -210,7 +195,8 @@ 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_pio_mode(drive), &p, T, UT);
+ u8 pio = ide_get_best_pio_mode(drive, 255, 5);
+ ide_timing_compute(drive, XFER_PIO_0 + pio, &p, T, UT);
ide_timing_merge(&p, t, t, IDE_TIMING_ALL);
}
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 077fb674a96..b442b341d52 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -455,6 +455,8 @@ static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
hwif->straight8 = tmp_hwif->straight8;
hwif->bus_state = tmp_hwif->bus_state;
+ hwif->host_flags = tmp_hwif->host_flags;
+
hwif->atapi_dma = tmp_hwif->atapi_dma;
hwif->ultra_mask = tmp_hwif->ultra_mask;
hwif->mwdma_mask = tmp_hwif->mwdma_mask;
diff --git a/drivers/ide/pci/amd74xx.c b/drivers/ide/pci/amd74xx.c
index 9c3ea90aeb8..5ed1d485fc7 100644
--- a/drivers/ide/pci/amd74xx.c
+++ b/drivers/ide/pci/amd74xx.c
@@ -1,5 +1,5 @@
/*
- * Version 2.20
+ * Version 2.21
*
* AMD 755/756/766/8111 and nVidia nForce/2/2s/3/3s/CK804/MCP04
* IDE driver for Linux.
@@ -272,10 +272,8 @@ 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_pio_mode(drive));
- return;
- }
+ if (pio == 255)
+ pio = ide_get_best_pio_mode(drive, 255, 5);
amd_set_drive(drive, XFER_PIO_0 + min_t(byte, pio, 5));
}
@@ -284,12 +282,14 @@ static int amd74xx_ide_dma_check(ide_drive_t *drive)
{
u8 speed = ide_max_dma_mode(drive);
- if (speed == 0)
- speed = ide_find_best_pio_mode(drive);
+ if (speed == 0) {
+ amd74xx_tune_drive(drive, 255);
+ return -1;
+ }
amd_set_drive(drive, speed);
- if (drive->autodma && (speed & XFER_MODE) != XFER_PIO)
+ if (drive->autodma)
return 0;
return -1;
@@ -451,6 +451,8 @@ static void __devinit init_hwif_amd74xx(ide_hwif_t *hwif)
.autodma = AUTODMA, \
.enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}}, \
.bootable = ON_BOARD, \
+ .host_flags = IDE_HFLAG_PIO_NO_BLACKLIST \
+ | IDE_HFLAG_PIO_NO_DOWNGRADE, \
}
#define DECLARE_NV_DEV(name_str) \
@@ -461,6 +463,8 @@ static void __devinit init_hwif_amd74xx(ide_hwif_t *hwif)
.autodma = AUTODMA, \
.enablebits = {{0x50,0x02,0x02}, {0x50,0x01,0x01}}, \
.bootable = ON_BOARD, \
+ .host_flags = IDE_HFLAG_PIO_NO_BLACKLIST \
+ | IDE_HFLAG_PIO_NO_DOWNGRADE, \
}
static ide_pci_device_t amd74xx_chipsets[] __devinitdata = {
diff --git a/drivers/ide/pci/via82cxxx.c b/drivers/ide/pci/via82cxxx.c
index bfc9b67f8c9..b107ee3588f 100644
--- a/drivers/ide/pci/via82cxxx.c
+++ b/drivers/ide/pci/via82cxxx.c
@@ -1,6 +1,6 @@
/*
*
- * Version 3.45
+ * Version 3.46
*
* VIA IDE driver for Linux. Supported southbridges:
*
@@ -203,10 +203,8 @@ static int via_set_drive(ide_drive_t *drive, u8 speed)
static void via82cxxx_tune_drive(ide_drive_t *drive, u8 pio)
{
- if (pio == 255) {
- via_set_drive(drive, ide_find_best_pio_mode(drive));
- return;
- }
+ if (pio == 255)
+ pio = ide_get_best_pio_mode(drive, 255, 5);
via_set_drive(drive, XFER_PIO_0 + min_t(u8, pio, 5));
}
@@ -223,12 +221,14 @@ static int via82cxxx_ide_dma_check (ide_drive_t *drive)
{
u8 speed = ide_max_dma_mode(drive);
- if (speed == 0)
- speed = ide_find_best_pio_mode(drive);
+ if (speed == 0) {
+ via82cxxx_tune_drive(drive, 255);
+ return -1;
+ }
via_set_drive(drive, speed);
- if (drive->autodma && (speed & XFER_MODE) != XFER_PIO)
+ if (drive->autodma)
return 0;
return -1;
@@ -500,7 +500,9 @@ static ide_pci_device_t via82cxxx_chipsets[] __devinitdata = {
.init_hwif = init_hwif_via82cxxx,
.autodma = NOAUTODMA,
.enablebits = {{0x40,0x02,0x02}, {0x40,0x01,0x01}},
- .bootable = ON_BOARD
+ .bootable = ON_BOARD,
+ .host_flags = IDE_HFLAG_PIO_NO_BLACKLIST
+ | IDE_HFLAG_PIO_NO_DOWNGRADE,
},{ /* 1 */
.name = "VP_IDE",
.init_chipset = init_chipset_via82cxxx,
@@ -508,6 +510,8 @@ static ide_pci_device_t via82cxxx_chipsets[] __devinitdata = {
.autodma = AUTODMA,
.enablebits = {{0x00,0x00,0x00}, {0x00,0x00,0x00}},
.bootable = ON_BOARD,
+ .host_flags = IDE_HFLAG_PIO_NO_BLACKLIST
+ | IDE_HFLAG_PIO_NO_DOWNGRADE,
}
};
diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c
index bfe1f4e5959..e9f3267456e 100644
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -613,6 +613,8 @@ void ide_pci_setup_ports(struct pci_dev *dev, ide_pci_device_t *d, int pciirq, a
else
ide_hwif_setup_dma(dev, d, hwif);
bypass_legacy_dma:
+ hwif->host_flags = d->host_flags;
+
if (d->init_hwif)
/* Call chipset-specific routine
* for each enabled hwif
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 14a87f619d1..9f72f6e0c95 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -681,6 +681,8 @@ typedef struct hwif_s {
u8 straight8; /* Alan's straight 8 check */
u8 bus_state; /* power state of the IDE bus */
+ u8 host_flags;
+
u8 atapi_dma; /* host supports atapi_dma */
u8 ultra_mask;
u8 mwdma_mask;
@@ -1245,7 +1247,12 @@ typedef struct ide_pci_enablebit_s {
enum {
/* Uses ISA control ports not PCI ones. */
IDE_HFLAG_ISA_PORTS = (1 << 0),
+ /* single port device */
IDE_HFLAG_SINGLE = (1 << 1),
+ /* don't use legacy PIO blacklist */
+ IDE_HFLAG_PIO_NO_BLACKLIST = (1 << 2),
+ /* don't use conservative PIO "downgrade" */
+ IDE_HFLAG_PIO_NO_DOWNGRADE = (1 << 3),
};
typedef struct ide_pci_device_s {