/* * 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/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 __devinit 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");