diff options
Diffstat (limited to 'drivers/ide/pci/it8213.c')
| -rw-r--r-- | drivers/ide/pci/it8213.c | 313 |
1 files changed, 0 insertions, 313 deletions
diff --git a/drivers/ide/pci/it8213.c b/drivers/ide/pci/it8213.c deleted file mode 100644 index 76e91ff9420..00000000000 --- a/drivers/ide/pci/it8213.c +++ /dev/null @@ -1,313 +0,0 @@ -/* - * ITE 8213 IDE driver - * - * Copyright (C) 2006 Jack Lee - * Copyright (C) 2006 Alan Cox - * Copyright (C) 2007 Bartlomiej Zolnierkiewicz - */ - -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/module.h> -#include <linux/pci.h> -#include <linux/delay.h> -#include <linux/hdreg.h> -#include <linux/ide.h> -#include <linux/init.h> - -#include <asm/io.h> - -/** - * it8213_dma_2_pio - return the PIO mode matching DMA - * @xfer_rate: transfer speed - * - * Returns the nearest equivalent PIO timing for the DMA - * mode requested by the controller. - */ - -static u8 it8213_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: - return 4; - case XFER_MW_DMA_1: - return 3; - case XFER_SW_DMA_2: - return 2; - case XFER_MW_DMA_0: - case XFER_SW_DMA_1: - case XFER_SW_DMA_0: - default: - return 0; - } -} - -/* - * it8213_tune_pio - tune a drive - * @drive: drive to tune - * @pio: desired PIO mode - * - * Set the interface PIO mode. - */ - -static void it8213_tune_pio(ide_drive_t *drive, const u8 pio) -{ - ide_hwif_t *hwif = HWIF(drive); - struct pci_dev *dev = hwif->pci_dev; - int is_slave = drive->dn & 1; - int master_port = 0x40; - int slave_port = 0x44; - unsigned long flags; - u16 master_data; - u8 slave_data; - static DEFINE_SPINLOCK(tune_lock); - int control = 0; - - static const u8 timings[][2]= { - { 0, 0 }, - { 0, 0 }, - { 1, 0 }, - { 2, 1 }, - { 2, 3 }, }; - - spin_lock_irqsave(&tune_lock, flags); - pci_read_config_word(dev, master_port, &master_data); - - if (pio > 1) - control |= 1; /* Programmable timing on */ - if (drive->media != ide_disk) - control |= 4; /* ATAPI */ - if (pio > 2) - control |= 2; /* IORDY */ - if (is_slave) { - master_data |= 0x4000; - master_data &= ~0x0070; - if (pio > 1) - master_data = master_data | (control << 4); - pci_read_config_byte(dev, slave_port, &slave_data); - slave_data = slave_data & 0xf0; - slave_data = slave_data | (timings[pio][0] << 2) | timings[pio][1]; - } else { - master_data &= ~0x3307; - if (pio > 1) - master_data = master_data | control; - master_data = master_data | (timings[pio][0] << 12) | (timings[pio][1] << 8); - } - pci_write_config_word(dev, master_port, master_data); - if (is_slave) - pci_write_config_byte(dev, slave_port, slave_data); - spin_unlock_irqrestore(&tune_lock, flags); -} - -static void it8213_set_pio_mode(ide_drive_t *drive, const u8 pio) -{ - it8213_tune_pio(drive, pio); - ide_config_drive_speed(drive, XFER_PIO_0 + pio); -} - -/** - * it8213_tune_chipset - set controller timings - * @drive: Drive to set up - * @speed: speed we want to achieve - * - * Tune the ITE chipset for the desired mode. - */ - -static int it8213_tune_chipset(ide_drive_t *drive, const u8 speed) -{ - ide_hwif_t *hwif = HWIF(drive); - struct pci_dev *dev = hwif->pci_dev; - u8 maslave = 0x40; - int a_speed = 3 << (drive->dn * 4); - int u_flag = 1 << drive->dn; - int v_flag = 0x01 << drive->dn; - int w_flag = 0x10 << drive->dn; - int u_speed = 0; - u16 reg4042, reg4a; - u8 reg48, reg54, reg55; - - pci_read_config_word(dev, maslave, ®4042); - pci_read_config_byte(dev, 0x48, ®48); - pci_read_config_word(dev, 0x4a, ®4a); - pci_read_config_byte(dev, 0x54, ®54); - pci_read_config_byte(dev, 0x55, ®55); - - switch(speed) { - case XFER_UDMA_6: - case XFER_UDMA_4: - case XFER_UDMA_2: u_speed = 2 << (drive->dn * 4); break; - case XFER_UDMA_5: - case XFER_UDMA_3: - case XFER_UDMA_1: u_speed = 1 << (drive->dn * 4); break; - case XFER_UDMA_0: u_speed = 0 << (drive->dn * 4); break; - break; - case XFER_MW_DMA_2: - case XFER_MW_DMA_1: - case XFER_SW_DMA_2: - break; - default: - return -1; - } - - if (speed >= XFER_UDMA_0) { - if (!(reg48 & u_flag)) - pci_write_config_byte(dev, 0x48, reg48 | u_flag); - if (speed >= XFER_UDMA_5) { - pci_write_config_byte(dev, 0x55, (u8) reg55|w_flag); - } else { - pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag); - } - - if ((reg4a & a_speed) != u_speed) - pci_write_config_word(dev, 0x4a, (reg4a & ~a_speed) | u_speed); - if (speed > XFER_UDMA_2) { - if (!(reg54 & v_flag)) - pci_write_config_byte(dev, 0x54, reg54 | v_flag); - } else - pci_write_config_byte(dev, 0x54, reg54 & ~v_flag); - } else { - if (reg48 & u_flag) - pci_write_config_byte(dev, 0x48, reg48 & ~u_flag); - if (reg4a & a_speed) - pci_write_config_word(dev, 0x4a, reg4a & ~a_speed); - if (reg54 & v_flag) - pci_write_config_byte(dev, 0x54, reg54 & ~v_flag); - if (reg55 & w_flag) - pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag); - } - - it8213_tune_pio(drive, it8213_dma_2_pio(speed)); - - return ide_config_drive_speed(drive, speed); -} - -/** - * it8213_configure_drive_for_dma - set up for DMA transfers - * @drive: drive we are going to set up - * - * Set up the drive for DMA, tune the controller and drive as - * required. If the drive isn't suitable for DMA or we hit - * other problems then we will drop down to PIO and set up - * PIO appropriately - */ - -static int it8213_config_drive_for_dma (ide_drive_t *drive) -{ - if (ide_tune_dma(drive)) - return 0; - - ide_set_max_pio(drive); - - return -1; -} - -/** - * init_hwif_it8213 - set up hwif structs - * @hwif: interface to set up - * - * We do the basic set up of the interface structure. The IT8212 - * requires several custom handlers so we override the default - * ide DMA handlers appropriately - */ - -static void __devinit init_hwif_it8213(ide_hwif_t *hwif) -{ - u8 reg42h = 0; - - hwif->speedproc = &it8213_tune_chipset; - hwif->set_pio_mode = &it8213_set_pio_mode; - - hwif->autodma = 0; - - hwif->drives[0].autotune = 1; - hwif->drives[1].autotune = 1; - - if (!hwif->dma_base) - return; - - hwif->atapi_dma = 1; - hwif->ultra_mask = 0x7f; - hwif->mwdma_mask = 0x06; - hwif->swdma_mask = 0x04; - - pci_read_config_byte(hwif->pci_dev, 0x42, ®42h); - - hwif->ide_dma_check = &it8213_config_drive_for_dma; - - if (hwif->cbl != ATA_CBL_PATA40_SHORT) - hwif->cbl = (reg42h & 0x02) ? ATA_CBL_PATA40 : ATA_CBL_PATA80; - - /* - * The BIOS often doesn't set up DMA on this controller - * so we always do it. - */ - if (!noautodma) - hwif->autodma = 1; - - hwif->drives[0].autodma = hwif->autodma; - hwif->drives[1].autodma = hwif->autodma; -} - - -#define DECLARE_ITE_DEV(name_str) \ - { \ - .name = name_str, \ - .init_hwif = init_hwif_it8213, \ - .autodma = AUTODMA, \ - .enablebits = {{0x41,0x80,0x80}}, \ - .bootable = ON_BOARD, \ - .host_flags = IDE_HFLAG_SINGLE, \ - .pio_mask = ATA_PIO4, \ - } - -static ide_pci_device_t it8213_chipsets[] __devinitdata = { - /* 0 */ DECLARE_ITE_DEV("IT8213"), -}; - - -/** - * it8213_init_one - pci layer discovery entry - * @dev: PCI device - * @id: ident table entry - * - * Called by the PCI code when it finds an ITE8213 controller. As - * this device follows the standard interfaces we can use the - * standard helper functions to do almost all the work for us. - */ - -static int __devinit it8213_init_one(struct pci_dev *dev, const struct pci_device_id *id) -{ - ide_setup_pci_device(dev, &it8213_chipsets[id->driver_data]); - return 0; -} - - -static struct pci_device_id it8213_pci_tbl[] = { - { PCI_VENDOR_ID_ITE, 0x8213, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, - { 0, }, -}; - -MODULE_DEVICE_TABLE(pci, it8213_pci_tbl); - -static struct pci_driver driver = { - .name = "ITE8213_IDE", - .id_table = it8213_pci_tbl, - .probe = it8213_init_one, -}; - -static int __init it8213_ide_init(void) -{ - return ide_pci_register_driver(&driver); -} - -module_init(it8213_ide_init); - -MODULE_AUTHOR("Jack Lee, Alan Cox"); -MODULE_DESCRIPTION("PCI driver module for the ITE 8213"); -MODULE_LICENSE("GPL"); |