diff options
Diffstat (limited to 'drivers/ide/pci/atiixp.c')
| -rw-r--r-- | drivers/ide/pci/atiixp.c | 370 |
1 files changed, 0 insertions, 370 deletions
diff --git a/drivers/ide/pci/atiixp.c b/drivers/ide/pci/atiixp.c deleted file mode 100644 index df9ee9a7843..00000000000 --- a/drivers/ide/pci/atiixp.c +++ /dev/null @@ -1,370 +0,0 @@ -/* - * linux/drivers/ide/pci/atiixp.c Version 0.01-bart2 Feb. 26, 2004 - * - * Copyright (C) 2003 ATI Inc. <hyu@ati.com> - * Copyright (C) 2004 Bartlomiej Zolnierkiewicz - * - */ - -#include <linux/config.h> -#include <linux/types.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/ioport.h> -#include <linux/pci.h> -#include <linux/hdreg.h> -#include <linux/ide.h> -#include <linux/delay.h> -#include <linux/init.h> - -#include <asm/io.h> - -#define ATIIXP_IDE_PIO_TIMING 0x40 -#define ATIIXP_IDE_MDMA_TIMING 0x44 -#define ATIIXP_IDE_PIO_CONTROL 0x48 -#define ATIIXP_IDE_PIO_MODE 0x4a -#define ATIIXP_IDE_UDMA_CONTROL 0x54 -#define ATIIXP_IDE_UDMA_MODE 0x56 - -typedef struct { - u8 command_width; - u8 recover_width; -} atiixp_ide_timing; - -static atiixp_ide_timing pio_timing[] = { - { 0x05, 0x0d }, - { 0x04, 0x07 }, - { 0x03, 0x04 }, - { 0x02, 0x02 }, - { 0x02, 0x00 }, -}; - -static atiixp_ide_timing mdma_timing[] = { - { 0x07, 0x07 }, - { 0x02, 0x01 }, - { 0x02, 0x00 }, -}; - -static int save_mdma_mode[4]; - -/** - * atiixp_ratemask - compute rate mask for ATIIXP IDE - * @drive: IDE drive to compute for - * - * Returns the available modes for the ATIIXP IDE controller. - */ - -static u8 atiixp_ratemask(ide_drive_t *drive) -{ - u8 mode = 3; - - if (!eighty_ninty_three(drive)) - mode = min(mode, (u8)1); - return mode; -} - -/** - * atiixp_dma_2_pio - return the PIO mode matching DMA - * @xfer_rate: transfer speed - * - * Returns the nearest equivalent PIO timing for the PIO or DMA - * mode requested by the controller. - */ - -static u8 atiixp_dma_2_pio(u8 xfer_rate) { - switch(xfer_rate) { - case XFER_UDMA_6: - case XFER_UDMA_5: - case XFER_UDMA_4: - case XFER_UDMA_3: - case XFER_UDMA_2: - case XFER_UDMA_1: - case XFER_UDMA_0: - case XFER_MW_DMA_2: - case XFER_PIO_4: - return 4; - case XFER_MW_DMA_1: - case XFER_PIO_3: - return 3; - case XFER_SW_DMA_2: - case XFER_PIO_2: - return 2; - case XFER_MW_DMA_0: - case XFER_SW_DMA_1: - case XFER_SW_DMA_0: - case XFER_PIO_1: - case XFER_PIO_0: - case XFER_PIO_SLOW: - default: - return 0; - } -} - -static int atiixp_ide_dma_host_on(ide_drive_t *drive) -{ - struct pci_dev *dev = drive->hwif->pci_dev; - unsigned long flags; - u16 tmp16; - - spin_lock_irqsave(&ide_lock, flags); - - pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &tmp16); - if (save_mdma_mode[drive->dn]) - tmp16 &= ~(1 << drive->dn); - else - tmp16 |= (1 << drive->dn); - pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, tmp16); - - spin_unlock_irqrestore(&ide_lock, flags); - - return __ide_dma_host_on(drive); -} - -static int atiixp_ide_dma_host_off(ide_drive_t *drive) -{ - struct pci_dev *dev = drive->hwif->pci_dev; - unsigned long flags; - u16 tmp16; - - spin_lock_irqsave(&ide_lock, flags); - - pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &tmp16); - tmp16 &= ~(1 << drive->dn); - pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, tmp16); - - spin_unlock_irqrestore(&ide_lock, flags); - - return __ide_dma_host_off(drive); -} - -/** - * atiixp_tune_drive - tune a drive attached to a ATIIXP - * @drive: drive to tune - * @pio: desired PIO mode - * - * Set the interface PIO mode. - */ - -static void atiixp_tuneproc(ide_drive_t *drive, u8 pio) -{ - struct pci_dev *dev = drive->hwif->pci_dev; - unsigned long flags; - int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8; - u32 pio_timing_data; - u16 pio_mode_data; - - spin_lock_irqsave(&ide_lock, flags); - - pci_read_config_word(dev, ATIIXP_IDE_PIO_MODE, &pio_mode_data); - pio_mode_data &= ~(0x07 << (drive->dn * 4)); - pio_mode_data |= (pio << (drive->dn * 4)); - pci_write_config_word(dev, ATIIXP_IDE_PIO_MODE, pio_mode_data); - - pci_read_config_dword(dev, ATIIXP_IDE_PIO_TIMING, &pio_timing_data); - pio_timing_data &= ~(0xff << timing_shift); - pio_timing_data |= (pio_timing[pio].recover_width << timing_shift) | - (pio_timing[pio].command_width << (timing_shift + 4)); - pci_write_config_dword(dev, ATIIXP_IDE_PIO_TIMING, pio_timing_data); - - spin_unlock_irqrestore(&ide_lock, flags); -} - -/** - * atiixp_tune_chipset - tune a ATIIXP interface - * @drive: IDE drive to tune - * @xferspeed: speed to configure - * - * Set a ATIIXP interface channel to the desired speeds. This involves - * requires the right timing data into the ATIIXP configuration space - * then setting the drive parameters appropriately - */ - -static int atiixp_speedproc(ide_drive_t *drive, u8 xferspeed) -{ - struct pci_dev *dev = drive->hwif->pci_dev; - unsigned long flags; - int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8; - u32 tmp32; - u16 tmp16; - u8 speed, pio; - - speed = ide_rate_filter(atiixp_ratemask(drive), xferspeed); - - spin_lock_irqsave(&ide_lock, flags); - - save_mdma_mode[drive->dn] = 0; - if (speed >= XFER_UDMA_0) { - pci_read_config_word(dev, ATIIXP_IDE_UDMA_MODE, &tmp16); - tmp16 &= ~(0x07 << (drive->dn * 4)); - tmp16 |= ((speed & 0x07) << (drive->dn * 4)); - pci_write_config_word(dev, ATIIXP_IDE_UDMA_MODE, tmp16); - } else { - if ((speed >= XFER_MW_DMA_0) && (speed <= XFER_MW_DMA_2)) { - save_mdma_mode[drive->dn] = speed; - pci_read_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, &tmp32); - tmp32 &= ~(0xff << timing_shift); - tmp32 |= (mdma_timing[speed & 0x03].recover_width << timing_shift) | - (mdma_timing[speed & 0x03].command_width << (timing_shift + 4)); - pci_write_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, tmp32); - } - } - - spin_unlock_irqrestore(&ide_lock, flags); - - if (speed >= XFER_SW_DMA_0) - pio = atiixp_dma_2_pio(speed); - else - pio = speed - XFER_PIO_0; - - atiixp_tuneproc(drive, pio); - - return ide_config_drive_speed(drive, speed); -} - -/** - * atiixp_config_drive_for_dma - configure drive for DMA - * @drive: IDE drive to configure - * - * Set up a ATIIXP interface channel for the best available speed. - * We prefer UDMA if it is available and then MWDMA. If DMA is - * not available we switch to PIO and return 0. - */ - -static int atiixp_config_drive_for_dma(ide_drive_t *drive) -{ - u8 speed = ide_dma_speed(drive, atiixp_ratemask(drive)); - - /* If no DMA speed was available then disable DMA and use PIO. */ - if (!speed) { - u8 tspeed = ide_get_best_pio_mode(drive, 255, 5, NULL); - speed = atiixp_dma_2_pio(XFER_PIO_0 + tspeed) + XFER_PIO_0; - } - - (void) atiixp_speedproc(drive, speed); - return ide_dma_enable(drive); -} - -/** - * atiixp_dma_check - set up an IDE device - * @drive: IDE drive to configure - * - * Set up the ATIIXP interface for the best available speed on this - * interface, preferring DMA to PIO. - */ - -static int atiixp_dma_check(ide_drive_t *drive) -{ - ide_hwif_t *hwif = HWIF(drive); - struct hd_driveid *id = drive->id; - u8 tspeed, speed; - - drive->init_speed = 0; - - if ((id->capability & 1) && drive->autodma) { - - if (ide_use_dma(drive)) { - if (atiixp_config_drive_for_dma(drive)) - return hwif->ide_dma_on(drive); - } - - goto fast_ata_pio; - - } else if ((id->capability & 8) || (id->field_valid & 2)) { -fast_ata_pio: - tspeed = ide_get_best_pio_mode(drive, 255, 5, NULL); - speed = atiixp_dma_2_pio(XFER_PIO_0 + tspeed) + XFER_PIO_0; - hwif->speedproc(drive, speed); - return hwif->ide_dma_off_quietly(drive); - } - /* IORDY not supported */ - return 0; -} - -/** - * init_hwif_atiixp - fill in the hwif for the ATIIXP - * @hwif: IDE interface - * - * Set up the ide_hwif_t for the ATIIXP interface according to the - * capabilities of the hardware. - */ - -static void __devinit init_hwif_atiixp(ide_hwif_t *hwif) -{ - if (!hwif->irq) - hwif->irq = hwif->channel ? 15 : 14; - - hwif->autodma = 0; - hwif->tuneproc = &atiixp_tuneproc; - hwif->speedproc = &atiixp_speedproc; - hwif->drives[0].autotune = 1; - hwif->drives[1].autotune = 1; - - if (!hwif->dma_base) - return; - - hwif->atapi_dma = 1; - hwif->ultra_mask = 0x3f; - hwif->mwdma_mask = 0x06; - hwif->swdma_mask = 0x04; - - /* FIXME: proper cable detection needed */ - hwif->udma_four = 1; - hwif->ide_dma_host_on = &atiixp_ide_dma_host_on; - hwif->ide_dma_host_off = &atiixp_ide_dma_host_off; - hwif->ide_dma_check = &atiixp_dma_check; - if (!noautodma) - hwif->autodma = 1; - - hwif->drives[1].autodma = hwif->autodma; - hwif->drives[0].autodma = hwif->autodma; -} - -static ide_pci_device_t atiixp_pci_info[] __devinitdata = { - { /* 0 */ - .name = "ATIIXP", - .init_hwif = init_hwif_atiixp, - .channels = 2, - .autodma = AUTODMA, - .enablebits = {{0x48,0x01,0x00}, {0x48,0x08,0x00}}, - .bootable = ON_BOARD, - } -}; - -/** - * atiixp_init_one - called when a ATIIXP is found - * @dev: the atiixp device - * @id: the matching pci id - * - * Called when the PCI registration layer (or the IDE initialization) - * finds a device matching our IDE device tables. - */ - -static int __devinit atiixp_init_one(struct pci_dev *dev, const struct pci_device_id *id) -{ - return ide_setup_pci_device(dev, &atiixp_pci_info[id->driver_data]); -} - -static struct pci_device_id atiixp_pci_tbl[] = { - { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP200_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, - { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP300_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, - { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_IDE, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, - { 0, }, -}; -MODULE_DEVICE_TABLE(pci, atiixp_pci_tbl); - -static struct pci_driver driver = { - .name = "ATIIXP_IDE", - .id_table = atiixp_pci_tbl, - .probe = atiixp_init_one, -}; - -static int atiixp_ide_init(void) -{ - return ide_pci_register_driver(&driver); -} - -module_init(atiixp_ide_init); - -MODULE_AUTHOR("HUI YU"); -MODULE_DESCRIPTION("PCI driver module for ATI IXP IDE"); -MODULE_LICENSE("GPL"); |