* linux/drivers/ide/pci/cs5535.c
*
* Copyright (C) 2004-2005 Advanced Micro Devices, Inc.
+ * Copyright (C) 2007 Bartlomiej Zolnierkiewicz
*
* History:
* 09/20/2005 - Jaya Kumar <jayakumar.ide@gmail.com>
*
* cs5535_set_speed() configures the chipset to a new speed.
*/
-static void cs5535_set_speed(ide_drive_t *drive, u8 speed)
+static void cs5535_set_speed(ide_drive_t *drive, const u8 speed)
{
u32 reg = 0, dummy;
/* Set the PIO timings */
if ((speed & XFER_MODE) == XFER_PIO) {
- u8 pioa;
- u8 piob;
- u8 cmd;
+ ide_drive_t *pair = ide_get_paired_drive(drive);
+ u8 cmd, pioa;
- pioa = speed - XFER_PIO_0;
- piob = ide_get_best_pio_mode(&(drive->hwif->drives[!unit]),
- 255, 4, NULL);
- cmd = pioa < piob ? pioa : piob;
+ cmd = pioa = speed - XFER_PIO_0;
+
+ if (pair->present) {
+ u8 piob = ide_get_best_pio_mode(pair, 255, 4);
+
+ if (piob < cmd)
+ cmd = piob;
+ }
/* Write the speed of the current drive */
reg = (cs5535_pio_cmd_timings[cmd] << 16) |
reg &= 0x80000000UL; /* Preserve the PIO format bit */
- if (speed >= XFER_UDMA_0 && speed <= XFER_UDMA_7)
+ if (speed >= XFER_UDMA_0 && speed <= XFER_UDMA_4)
reg |= cs5535_udma_timings[speed - XFER_UDMA_0];
else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2)
reg |= cs5535_mwdma_timings[speed - XFER_MW_DMA_0];
}
}
-/****
- * cs5535_set_drive - Configure the drive to the new speed
- * @drive: Drive to set up
- * @speed: desired speed
+/**
+ * cs5535_set_dma_mode - set host controller for DMA mode
+ * @drive: drive
+ * @speed: DMA mode
*
- * cs5535_set_drive() configures the drive and the chipset to a
- * new speed. It also can be called by upper layers.
+ * Programs the chipset for DMA mode.
*/
-static int cs5535_set_drive(ide_drive_t *drive, u8 speed)
+
+static void cs5535_set_dma_mode(ide_drive_t *drive, const u8 speed)
{
- speed = ide_rate_filter(drive, speed);
- ide_config_drive_speed(drive, speed);
cs5535_set_speed(drive, speed);
-
- return 0;
}
-/****
- * cs5535_tuneproc - PIO setup
- * @drive: drive to set up
- * @pio: mode to use (255 for 'best possible')
+/**
+ * cs5535_set_pio_mode - set host controller for PIO mode
+ * @drive: drive
+ * @pio: PIO mode number
*
* A callback from the upper layers for PIO-only tuning.
*/
-static void cs5535_tuneproc(ide_drive_t *drive, u8 xferspeed)
-{
- u8 modes[] = { XFER_PIO_0, XFER_PIO_1, XFER_PIO_2, XFER_PIO_3,
- XFER_PIO_4 };
-
- /* cs5535 max pio is pio 4, best_pio will check the blacklist.
- i think we don't need to rate_filter the incoming xferspeed
- since we know we're only going to choose pio */
- xferspeed = ide_get_best_pio_mode(drive, xferspeed, 4, NULL);
- ide_config_drive_speed(drive, modes[xferspeed]);
- cs5535_set_speed(drive, xferspeed);
-}
-
-static int cs5535_config_drive_for_dma(ide_drive_t *drive)
-{
- u8 speed = ide_max_dma_mode(drive);
-
- /* If no DMA speed was available then let dma_check hit pio */
- if (!speed) {
- return 0;
- }
-
- cs5535_set_drive(drive, speed);
- return ide_dma_enable(drive);
-}
-static int cs5535_dma_check(ide_drive_t *drive)
+static void cs5535_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
- u8 speed;
-
- drive->init_speed = 0;
-
- if (ide_use_dma(drive) && cs5535_config_drive_for_dma(drive))
- return 0;
-
- if (ide_use_fast_pio(drive)) {
- speed = ide_get_best_pio_mode(drive, 255, 4, NULL);
- cs5535_set_drive(drive, speed);
- }
-
- return -1;
+ cs5535_set_speed(drive, XFER_PIO_0 + pio);
}
static u8 __devinit cs5535_cable_detect(struct pci_dev *dev)
/* if a 80 wire cable was detected */
pci_read_config_byte(dev, CS5535_CABLE_DETECT, &bit);
- return (bit & 1);
+
+ return (bit & 1) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
}
/****
*/
static void __devinit init_hwif_cs5535(ide_hwif_t *hwif)
{
- int i;
+ hwif->set_pio_mode = &cs5535_set_pio_mode;
+ hwif->set_dma_mode = &cs5535_set_dma_mode;
- hwif->autodma = 0;
+ hwif->drives[1].autotune = hwif->drives[0].autotune = 1;
- hwif->tuneproc = &cs5535_tuneproc;
- hwif->speedproc = &cs5535_set_drive;
- hwif->ide_dma_check = &cs5535_dma_check;
+ if (hwif->dma_base == 0)
+ return;
- hwif->atapi_dma = 1;
hwif->ultra_mask = 0x1F;
hwif->mwdma_mask = 0x07;
-
- hwif->udma_four = cs5535_cable_detect(hwif->pci_dev);
-
- if (!noautodma)
- hwif->autodma = 1;
-
- /* just setting autotune and not worrying about bios timings */
- for (i = 0; i < 2; i++) {
- hwif->drives[i].autotune = 1;
- hwif->drives[i].autodma = hwif->autodma;
- }
+ hwif->cbl = cs5535_cable_detect(hwif->pci_dev);
}
static ide_pci_device_t cs5535_chipset __devinitdata = {
.name = "CS5535",
.init_hwif = init_hwif_cs5535,
- .channels = 1,
- .autodma = AUTODMA,
- .bootable = ON_BOARD,
+ .host_flags = IDE_HFLAG_SINGLE | IDE_HFLAG_POST_SET_MODE |
+ IDE_HFLAG_BOOTABLE,
+ .pio_mask = ATA_PIO4,
};
static int __devinit cs5535_init_one(struct pci_dev *dev,
return ide_setup_pci_device(dev, &cs5535_chipset);
}
-static struct pci_device_id cs5535_pci_tbl[] =
-{
- { PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_CS5535_IDE, PCI_ANY_ID,
- PCI_ANY_ID, 0, 0, 0},
+static const struct pci_device_id cs5535_pci_tbl[] = {
+ { PCI_VDEVICE(NS, PCI_DEVICE_ID_NS_CS5535_IDE), 0 },
{ 0, },
};
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