diff options
Diffstat (limited to 'drivers/ide/pci/triflex.c')
| -rw-r--r-- | drivers/ide/pci/triflex.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/drivers/ide/pci/triflex.c b/drivers/ide/pci/triflex.c new file mode 100644 index 000000000000..a1df2bfe3631 --- /dev/null +++ b/drivers/ide/pci/triflex.c @@ -0,0 +1,188 @@ +/* + * triflex.c + * + * IDE Chipset driver for the Compaq TriFlex IDE controller. + * + * Known to work with the Compaq Workstation 5x00 series. + * + * Copyright (C) 2002 Hewlett-Packard Development Group, L.P. + * Author: Torben Mathiasen <torben.mathiasen@hp.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Loosely based on the piix & svwks drivers. + * + * Documentation: + * Not publically available. + */ + +#include <linux/config.h> +#include <linux/types.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/timer.h> +#include <linux/mm.h> +#include <linux/ioport.h> +#include <linux/blkdev.h> +#include <linux/hdreg.h> +#include <linux/pci.h> +#include <linux/ide.h> +#include <linux/init.h> + +static int triflex_tune_chipset(ide_drive_t *drive, u8 xferspeed) +{ + ide_hwif_t *hwif = HWIF(drive); + struct pci_dev *dev = hwif->pci_dev; + u8 channel_offset = hwif->channel ? 0x74 : 0x70; + u16 timing = 0; + u32 triflex_timings = 0; + u8 unit = (drive->select.b.unit & 0x01); + u8 speed = ide_rate_filter(0, xferspeed); + + pci_read_config_dword(dev, channel_offset, &triflex_timings); + + switch(speed) { + case XFER_MW_DMA_2: + timing = 0x0103; + break; + case XFER_MW_DMA_1: + timing = 0x0203; + break; + case XFER_MW_DMA_0: + timing = 0x0808; + break; + case XFER_SW_DMA_2: + case XFER_SW_DMA_1: + case XFER_SW_DMA_0: + timing = 0x0f0f; + break; + case XFER_PIO_4: + timing = 0x0202; + break; + case XFER_PIO_3: + timing = 0x0204; + break; + case XFER_PIO_2: + timing = 0x0404; + break; + case XFER_PIO_1: + timing = 0x0508; + break; + case XFER_PIO_0: + timing = 0x0808; + break; + default: + return -1; + } + + triflex_timings &= ~(0xFFFF << (16 * unit)); + triflex_timings |= (timing << (16 * unit)); + + pci_write_config_dword(dev, channel_offset, triflex_timings); + + return (ide_config_drive_speed(drive, speed)); +} + +static void triflex_tune_drive(ide_drive_t *drive, u8 pio) +{ + int use_pio = ide_get_best_pio_mode(drive, pio, 4, NULL); + (void) triflex_tune_chipset(drive, (XFER_PIO_0 + use_pio)); +} + +static int triflex_config_drive_for_dma(ide_drive_t *drive) +{ + int speed = ide_dma_speed(drive, 0); /* No ultra speeds */ + + if (!speed) { + u8 pspeed = ide_get_best_pio_mode(drive, 255, 4, NULL); + speed = XFER_PIO_0 + pspeed; + } + + (void) triflex_tune_chipset(drive, speed); + return ide_dma_enable(drive); +} + +static int triflex_config_drive_xfer_rate(ide_drive_t *drive) +{ + ide_hwif_t *hwif = HWIF(drive); + struct hd_driveid *id = drive->id; + + if ((id->capability & 1) && drive->autodma) { + if (ide_use_dma(drive)) { + if (triflex_config_drive_for_dma(drive)) + return hwif->ide_dma_on(drive); + } + } + + hwif->tuneproc(drive, 255); + return hwif->ide_dma_off_quietly(drive); +} + +static void __init init_hwif_triflex(ide_hwif_t *hwif) +{ + hwif->tuneproc = &triflex_tune_drive; + hwif->speedproc = &triflex_tune_chipset; + + hwif->atapi_dma = 1; + hwif->mwdma_mask = 0x07; + hwif->swdma_mask = 0x07; + hwif->ide_dma_check = &triflex_config_drive_xfer_rate; + + if (!noautodma) + hwif->autodma = 1; + hwif->drives[0].autodma = hwif->autodma; + hwif->drives[1].autodma = hwif->autodma; +} + +static ide_pci_device_t triflex_device __devinitdata = { + .name = "TRIFLEX", + .init_hwif = init_hwif_triflex, + .channels = 2, + .autodma = AUTODMA, + .enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}}, + .bootable = ON_BOARD, +}; + +static int __devinit triflex_init_one(struct pci_dev *dev, + const struct pci_device_id *id) +{ + return ide_setup_pci_device(dev, &triflex_device); +} + +static struct pci_device_id triflex_pci_tbl[] = { + { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, + { 0, }, +}; +MODULE_DEVICE_TABLE(pci, triflex_pci_tbl); + +static struct pci_driver driver = { + .name = "TRIFLEX_IDE", + .id_table = triflex_pci_tbl, + .probe = triflex_init_one, +}; + +static int triflex_ide_init(void) +{ + return ide_pci_register_driver(&driver); +} + +module_init(triflex_ide_init); + +MODULE_AUTHOR("Torben Mathiasen"); +MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE"); +MODULE_LICENSE("GPL"); + + |