Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

[linux-2.6-omap-h63xx.git] / drivers / ide / pci / cmd64x.c

diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c
index 0e3b5de26e698a73b7976f4eb2358ab63e3fbc18..0b568c60f9263767d0936a32a94efeb4c7c72e16 100644 (file)
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -214,28 +214,25 @@ static void program_cycle_times (ide_drive_t *drive, int cycle_time, int active_
 }
 
 /*
- * This routine selects drive's best PIO mode and writes into the chipset
- * registers setup/active/recovery timings.
+ * This routine writes into the chipset registers
+ * PIO setup/active/recovery timings.
  */
-static u8 cmd64x_tune_pio (ide_drive_t *drive, u8 mode_wanted)
+static void cmd64x_tune_pio(ide_drive_t *drive, const u8 pio)
 {
        ide_hwif_t *hwif        = HWIF(drive);
        struct pci_dev *dev     = hwif->pci_dev;
        unsigned int cycle_time;
-       u8 pio_mode, setup_count, arttim = 0;
+       u8 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);
-       cycle_time = ide_pio_cycle_time(drive, pio_mode);
-
-       cmdprintk("%s: PIO mode wanted %d, selected %d (%d ns)\n",
-                 drive->name, mode_wanted, pio_mode, cycle_time);
+       cycle_time = ide_pio_cycle_time(drive, pio);
 
        program_cycle_times(drive, cycle_time,
-                           ide_pio_timings[pio_mode].active_time);
+                           ide_pio_timings[pio].active_time);
 
-       setup_count = quantize_timing(ide_pio_timings[pio_mode].setup_time,
+       setup_count = quantize_timing(ide_pio_timings[pio].setup_time,
                                      1000 / system_bus_clock());
 
        /*
@@ -266,16 +263,14 @@ static u8 cmd64x_tune_pio (ide_drive_t *drive, u8 mode_wanted)
        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;
 }
 
 /*
  * Attempts to set drive's PIO mode.
- * Special cases are 8: prefetch off, 9: prefetch on (both never worked),
- * and 255: auto-select best mode (used at boot time).
+ * Special cases are 8: prefetch off, 9: prefetch on (both never worked)
  */
-static void cmd64x_tune_drive (ide_drive_t *drive, u8 pio)
+
+static void cmd64x_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
        /*
         * Filter out the prefetch control values
@@ -284,19 +279,17 @@ static void cmd64x_tune_drive (ide_drive_t *drive, u8 pio)
        if (pio == 8 || pio == 9)
                return;
 
-       pio = cmd64x_tune_pio(drive, pio);
+       cmd64x_tune_pio(drive, pio);
        (void) ide_config_drive_speed(drive, XFER_PIO_0 + pio);
 }
 
-static int cmd64x_tune_chipset (ide_drive_t *drive, u8 speed)
+static int cmd64x_tune_chipset(ide_drive_t *drive, const 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;
 
-       speed = ide_rate_filter(drive, speed);
-
        if (speed >= XFER_SW_DMA_0) {
                (void) pci_read_config_byte(dev, pciU, &regU);
                regU &= ~(unit ? 0xCA : 0x35);
@@ -330,14 +323,6 @@ static int cmd64x_tune_chipset (ide_drive_t *drive, u8 speed)
        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;
        }
@@ -354,7 +339,7 @@ static int cmd64x_config_drive_for_dma (ide_drive_t *drive)
                return 0;
 
        if (ide_use_fast_pio(drive))
-               cmd64x_tune_drive(drive, 255);
+               ide_set_max_pio(drive);
 
        return -1;
 }
@@ -538,7 +523,7 @@ static void __devinit init_hwif_cmd64x(ide_hwif_t *hwif)
 
        pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
 
-       hwif->tuneproc  = &cmd64x_tune_drive;
+       hwif->set_pio_mode = &cmd64x_set_pio_mode;
        hwif->speedproc = &cmd64x_tune_chipset;
 
        hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
@@ -622,6 +607,7 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
                .autodma        = AUTODMA,
                .enablebits     = {{0x00,0x00,0x00}, {0x51,0x08,0x08}},
                .bootable       = ON_BOARD,
+               .host_flags     = IDE_HFLAG_ABUSE_PREFETCH,
                .pio_mask       = ATA_PIO5,
                .udma_mask      = 0x00, /* no udma */
        },{     /* 1 */
@@ -632,6 +618,7 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
                .autodma        = AUTODMA,
                .enablebits     = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
                .bootable       = ON_BOARD,
+               .host_flags     = IDE_HFLAG_ABUSE_PREFETCH,
                .pio_mask       = ATA_PIO5,
                .udma_mask      = 0x07, /* udma0-2 */
        },{     /* 2 */
@@ -642,6 +629,7 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
                .autodma        = AUTODMA,
                .enablebits     = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
                .bootable       = ON_BOARD,
+               .host_flags     = IDE_HFLAG_ABUSE_PREFETCH,
                .pio_mask       = ATA_PIO5,
                .udma_mask      = 0x1f, /* udma0-4 */
        },{     /* 3 */
@@ -652,6 +640,7 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
                .autodma        = AUTODMA,
                .enablebits     = {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
                .bootable       = ON_BOARD,
+               .host_flags     = IDE_HFLAG_ABUSE_PREFETCH,
                .pio_mask       = ATA_PIO5,
                .udma_mask      = 0x3f, /* udma0-5 */
        }