[PATCH] update for pdc202xx_new driver
From: Bartlomiej Zolnierkiewicz
Date: Tue Mar 02 2004 - 15:54:14 EST
Many thanks to Promise for their support.
Expect more updates/fixes for Promise PATA soon.
Bartlomiej
[IDE] update for pdc202xx_new driver
- fix PIO (auto-)tuning - use pdcnew_new_tune_chipset()
and always tune PIO mode even if (U)DMA is used
- cleanup cable verification code a bit
- remove leftovers from driver split-up
- remove duplicate DISPLAY_PDC202XX_TIMINGS define
linux-2.6.4-rc1-root/drivers/ide/pci/pdc202xx_new.c | 165 --------------------
linux-2.6.4-rc1-root/drivers/ide/pci/pdc202xx_new.h | 119 --------------
2 files changed, 7 insertions(+), 277 deletions(-)
diff -puN drivers/ide/pci/pdc202xx_new.c~pdc27x_update drivers/ide/pci/pdc202xx_new.c
--- linux-2.6.4-rc1/drivers/ide/pci/pdc202xx_new.c~pdc27x_update 2004-03-02 21:14:04.000000000 +0100
+++ linux-2.6.4-rc1-root/drivers/ide/pci/pdc202xx_new.c 2004-03-02 21:14:04.000000000 +0100
@@ -140,108 +140,6 @@ static int check_in_drive_lists (ide_dri
return 0;
}
-static int pdcnew_tune_chipset (ide_drive_t *drive, u8 xferspeed)
-{
- ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
- u8 drive_pci = 0x60 + (drive->dn << 2);
- u8 speed = ide_rate_filter(pdcnew_ratemask(drive), xferspeed);
-
- u32 drive_conf;
- u8 AP, BP, CP, DP;
- u8 TA = 0, TB = 0, TC = 0;
-
- if ((drive->media != ide_disk) && (speed < XFER_SW_DMA_0))
- return -1;
-
- pci_read_config_dword(dev, drive_pci, &drive_conf);
- pci_read_config_byte(dev, (drive_pci), &AP);
- pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
- pci_read_config_byte(dev, (drive_pci)|0x02, &CP);
- pci_read_config_byte(dev, (drive_pci)|0x03, &DP);
-
- if (speed < XFER_SW_DMA_0) {
- if ((AP & 0x0F) || (BP & 0x07)) {
- /* clear PIO modes of lower 8421 bits of A Register */
- pci_write_config_byte(dev, (drive_pci), AP &~0x0F);
- pci_read_config_byte(dev, (drive_pci), &AP);
-
- /* clear PIO modes of lower 421 bits of B Register */
- pci_write_config_byte(dev, (drive_pci)|0x01, BP &~0x07);
- pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
-
- pci_read_config_byte(dev, (drive_pci), &AP);
- pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
- }
- } else {
- if ((BP & 0xF0) && (CP & 0x0F)) {
- /* clear DMA modes of upper 842 bits of B Register */
- /* clear PIO forced mode upper 1 bit of B Register */
- pci_write_config_byte(dev, (drive_pci)|0x01, BP &~0xF0);
- pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
-
- /* clear DMA modes of lower 8421 bits of C Register */
- pci_write_config_byte(dev, (drive_pci)|0x02, CP &~0x0F);
- pci_read_config_byte(dev, (drive_pci)|0x02, &CP);
- }
- }
-
- pci_read_config_byte(dev, (drive_pci), &AP);
- pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
- pci_read_config_byte(dev, (drive_pci)|0x02, &CP);
-
- switch(speed) {
- case XFER_UDMA_6: speed = XFER_UDMA_5;
- case XFER_UDMA_5:
- case XFER_UDMA_4: TB = 0x20; TC = 0x01; break;
- case XFER_UDMA_2: TB = 0x20; TC = 0x01; break;
- case XFER_UDMA_3:
- case XFER_UDMA_1: TB = 0x40; TC = 0x02; break;
- case XFER_UDMA_0:
- case XFER_MW_DMA_2: TB = 0x60; TC = 0x03; break;
- case XFER_MW_DMA_1: TB = 0x60; TC = 0x04; break;
- case XFER_MW_DMA_0:
- case XFER_SW_DMA_2: TB = 0x60; TC = 0x05; break;
- case XFER_SW_DMA_1: TB = 0x80; TC = 0x06; break;
- case XFER_SW_DMA_0: TB = 0xC0; TC = 0x0B; break;
- case XFER_PIO_4: TA = 0x01; TB = 0x04; break;
- case XFER_PIO_3: TA = 0x02; TB = 0x06; break;
- case XFER_PIO_2: TA = 0x03; TB = 0x08; break;
- case XFER_PIO_1: TA = 0x05; TB = 0x0C; break;
- case XFER_PIO_0:
- default: TA = 0x09; TB = 0x13; break;
- }
-
- if (speed < XFER_SW_DMA_0) {
- pci_write_config_byte(dev, (drive_pci), AP|TA);
- pci_write_config_byte(dev, (drive_pci)|0x01, BP|TB);
- } else {
- pci_write_config_byte(dev, (drive_pci)|0x01, BP|TB);
- pci_write_config_byte(dev, (drive_pci)|0x02, CP|TC);
- }
-
-#if PDC202XX_DECODE_REGISTER_INFO
- pci_read_config_byte(dev, (drive_pci), &AP);
- pci_read_config_byte(dev, (drive_pci)|0x01, &BP);
- pci_read_config_byte(dev, (drive_pci)|0x02, &CP);
- pci_read_config_byte(dev, (drive_pci)|0x03, &DP);
-
- decode_registers(REG_A, AP);
- decode_registers(REG_B, BP);
- decode_registers(REG_C, CP);
- decode_registers(REG_D, DP);
-#endif /* PDC202XX_DECODE_REGISTER_INFO */
-#if PDC202XX_DEBUG_DRIVE_INFO
- printk(KERN_DEBUG "%s: %s drive%d 0x%08x ",
- drive->name, ide_xfer_verbose(speed),
- drive->dn, drive_conf);
- pci_read_config_dword(dev, drive_pci, &drive_conf);
- printk("0x%08x\n", drive_conf);
-#endif /* PDC202XX_DEBUG_DRIVE_INFO */
-
- return (ide_config_drive_speed(drive, speed));
-}
-
static int pdcnew_new_tune_chipset (ide_drive_t *drive, u8 xferspeed)
{
ide_hwif_t *hwif = HWIF(drive);
@@ -288,19 +186,14 @@ static int pdcnew_new_tune_chipset (ide_
* 180, 120, 90, 90, 90, 60, 30
* 11, 5, 4, 3, 2, 1, 0
*/
-static int config_chipset_for_pio (ide_drive_t *drive, u8 pio)
+static void pdcnew_tune_drive(ide_drive_t *drive, u8 pio)
{
- u8 speed = 0;
+ u8 speed;
if (pio == 5) pio = 4;
speed = XFER_PIO_0 + ide_get_best_pio_mode(drive, 255, pio, NULL);
-
- return ((int) pdcnew_tune_chipset(drive, speed));
-}
-static void pdcnew_tune_drive (ide_drive_t *drive, u8 pio)
-{
- (void) config_chipset_for_pio(drive, pio);
+ (void)pdcnew_new_tune_chipset(drive, speed);
}
static u8 pdcnew_new_cable_detect (ide_hwif_t *hwif)
@@ -312,56 +205,15 @@ static int config_chipset_for_dma (ide_d
{
struct hd_driveid *id = drive->id;
ide_hwif_t *hwif = HWIF(drive);
- struct pci_dev *dev = hwif->pci_dev;
u8 speed = -1;
- u8 cable = 0;
+ u8 cable;
u8 ultra_66 = ((id->dma_ultra & 0x0010) ||
(id->dma_ultra & 0x0008)) ? 1 : 0;
- switch(dev->device) {
- case PCI_DEVICE_ID_PROMISE_20277:
- case PCI_DEVICE_ID_PROMISE_20276:
- case PCI_DEVICE_ID_PROMISE_20275:
- case PCI_DEVICE_ID_PROMISE_20271:
- case PCI_DEVICE_ID_PROMISE_20269:
- case PCI_DEVICE_ID_PROMISE_20270:
- case PCI_DEVICE_ID_PROMISE_20268:
- cable = pdcnew_new_cable_detect(hwif);
-#if PDC202_DEBUG_CABLE
- printk(KERN_DEBUG "%s: %s-pin cable, %s-pin cable, %d\n",
- hwif->name, hwif->udma_four ? "80" : "40",
- cable ? "40" : "80", cable);
-#endif /* PDC202_DEBUG_CABLE */
- break;
- default:
- /* If it's not one we know we should never
- arrive here.. */
- BUG();
- }
+ cable = pdcnew_new_cable_detect(hwif);
- /*
- * Set the control register to use the 66Mhz system
- * clock for UDMA 3/4 mode operation. If one drive on
- * a channel is U66 capable but the other isn't we
- * fall back to U33 mode. The BIOS INT 13 hooks turn
- * the clock on then off for each read/write issued. I don't
- * do that here because it would require modifying the
- * kernel, separating the fop routines from the kernel or
- * somehow hooking the fops calls. It may also be possible to
- * leave the 66Mhz clock on and readjust the timing
- * parameters.
- */
-
- if ((ultra_66) && (cable)) {
-#ifdef DEBUG
- printk(KERN_DEBUG "ULTRA 66/100/133: %s channel of Ultra 66/100/133 "
- "requires an 80-pin cable for Ultra66 operation.\n",
- hwif->channel ? "Secondary" : "Primary");
- printk(KERN_DEBUG " Switching to Ultra33 mode.\n");
-#endif /* DEBUG */
- /* Primary : zero out second bit */
- /* Secondary : zero out fourth bit */
+ if (ultra_66 && cable) {
printk(KERN_WARNING "Warning: %s channel requires an 80-pin cable for operation.\n", hwif->channel ? "Secondary":"Primary");
printk(KERN_WARNING "%s reduced to Ultra33 mode.\n", drive->name);
}
@@ -590,10 +442,7 @@ static void __init init_hwif_pdc202new (
hwif->speedproc = &pdcnew_new_tune_chipset;
hwif->resetproc = &pdcnew_new_reset;
- if (!hwif->dma_base) {
- hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
- return;
- }
+ hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
hwif->ultra_mask = 0x7f;
hwif->mwdma_mask = 0x07;
diff -puN drivers/ide/pci/pdc202xx_new.h~pdc27x_update drivers/ide/pci/pdc202xx_new.h
--- linux-2.6.4-rc1/drivers/ide/pci/pdc202xx_new.h~pdc27x_update 2004-03-02 21:14:04.000000000 +0100
+++ linux-2.6.4-rc1-root/drivers/ide/pci/pdc202xx_new.h 2004-03-02 21:14:04.000000000 +0100
@@ -5,15 +5,6 @@
#include <linux/pci.h>
#include <linux/ide.h>
-#define DISPLAY_PDC202XX_TIMINGS
-
-#ifndef SPLIT_BYTE
-#define SPLIT_BYTE(B,H,L) ((H)=(B>>4), (L)=(B-((B>>4)<<4)))
-#endif
-
-#define PDC202XX_DEBUG_DRIVE_INFO 0
-#define PDC202XX_DECODE_REGISTER_INFO 0
-
const static char *pdc_quirk_drives[] = {
"QUANTUM FIREBALLlct08 08",
"QUANTUM FIREBALLP KA6.4",
@@ -26,116 +17,6 @@ const static char *pdc_quirk_drives[] =
NULL
};
-/* A Register */
-#define SYNC_ERRDY_EN 0xC0
-
-#define SYNC_IN 0x80 /* control bit, different for master vs. slave drives */
-#define ERRDY_EN 0x40 /* control bit, different for master vs. slave drives */
-#define IORDY_EN 0x20 /* PIO: IOREADY */
-#define PREFETCH_EN 0x10 /* PIO: PREFETCH */
-
-#define PA3 0x08 /* PIO"A" timing */
-#define PA2 0x04 /* PIO"A" timing */
-#define PA1 0x02 /* PIO"A" timing */
-#define PA0 0x01 /* PIO"A" timing */
-
-/* B Register */
-
-#define MB2 0x80 /* DMA"B" timing */
-#define MB1 0x40 /* DMA"B" timing */
-#define MB0 0x20 /* DMA"B" timing */
-
-#define PB4 0x10 /* PIO_FORCE 1:0 */
-
-#define PB3 0x08 /* PIO"B" timing */ /* PIO flow Control mode */
-#define PB2 0x04 /* PIO"B" timing */ /* PIO 4 */
-#define PB1 0x02 /* PIO"B" timing */ /* PIO 3 half */
-#define PB0 0x01 /* PIO"B" timing */ /* PIO 3 other half */
-
-/* C Register */
-#define IORDYp_NO_SPEED 0x4F
-#define SPEED_DIS 0x0F
-
-#define DMARQp 0x80
-#define IORDYp 0x40
-#define DMAR_EN 0x20
-#define DMAW_EN 0x10
-
-#define MC3 0x08 /* DMA"C" timing */
-#define MC2 0x04 /* DMA"C" timing */
-#define MC1 0x02 /* DMA"C" timing */
-#define MC0 0x01 /* DMA"C" timing */
-
-#if PDC202XX_DECODE_REGISTER_INFO
-
-#define REG_A 0x01
-#define REG_B 0x02
-#define REG_C 0x04
-#define REG_D 0x08
-
-static void decode_registers (u8 registers, u8 value)
-{
- u8 bit = 0, bit1 = 0, bit2 = 0;
-
- switch(registers) {
- case REG_A:
- bit2 = 0;
- printk("A Register ");
- if (value & 0x80) printk("SYNC_IN ");
- if (value & 0x40) printk("ERRDY_EN ");
- if (value & 0x20) printk("IORDY_EN ");
- if (value & 0x10) printk("PREFETCH_EN ");
- if (value & 0x08) { printk("PA3 ");bit2 |= 0x08; }
- if (value & 0x04) { printk("PA2 ");bit2 |= 0x04; }
- if (value & 0x02) { printk("PA1 ");bit2 |= 0x02; }
- if (value & 0x01) { printk("PA0 ");bit2 |= 0x01; }
- printk("PIO(A) = %d ", bit2);
- break;
- case REG_B:
- bit1 = 0;bit2 = 0;
- printk("B Register ");
- if (value & 0x80) { printk("MB2 ");bit1 |= 0x80; }
- if (value & 0x40) { printk("MB1 ");bit1 |= 0x40; }
- if (value & 0x20) { printk("MB0 ");bit1 |= 0x20; }
- printk("DMA(B) = %d ", bit1 >> 5);
- if (value & 0x10) printk("PIO_FORCED/PB4 ");
- if (value & 0x08) { printk("PB3 ");bit2 |= 0x08; }
- if (value & 0x04) { printk("PB2 ");bit2 |= 0x04; }
- if (value & 0x02) { printk("PB1 ");bit2 |= 0x02; }
- if (value & 0x01) { printk("PB0 ");bit2 |= 0x01; }
- printk("PIO(B) = %d ", bit2);
- break;
- case REG_C:
- bit2 = 0;
- printk("C Register ");
- if (value & 0x80) printk("DMARQp ");
- if (value & 0x40) printk("IORDYp ");
- if (value & 0x20) printk("DMAR_EN ");
- if (value & 0x10) printk("DMAW_EN ");
-
- if (value & 0x08) { printk("MC3 ");bit2 |= 0x08; }
- if (value & 0x04) { printk("MC2 ");bit2 |= 0x04; }
- if (value & 0x02) { printk("MC1 ");bit2 |= 0x02; }
- if (value & 0x01) { printk("MC0 ");bit2 |= 0x01; }
- printk("DMA(C) = %d ", bit2);
- break;
- case REG_D:
- printk("D Register ");
- break;
- default:
- return;
- }
- printk("\n %s ", (registers & REG_D) ? "DP" :
- (registers & REG_C) ? "CP" :
- (registers & REG_B) ? "BP" :
- (registers & REG_A) ? "AP" : "ERROR");
- for (bit=128;bit>0;bit/=2)
- printk("%s", (value & bit) ? "1" : "0");
- printk("\n");
-}
-
-#endif /* PDC202XX_DECODE_REGISTER_INFO */
-
#define set_2regs(a, b) \
do { \
hwif->OUTB((a + adj), indexreg); \
_
-
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