| /* |
| * 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 publicly available. |
| */ |
| |
| #include <linux/types.h> |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/pci.h> |
| #include <linux/ide.h> |
| #include <linux/init.h> |
| |
| #define DRV_NAME "triflex" |
| |
| static void triflex_set_mode(ide_hwif_t *hwif, ide_drive_t *drive) |
| { |
| struct pci_dev *dev = to_pci_dev(hwif->dev); |
| u32 triflex_timings = 0; |
| u16 timing = 0; |
| u8 channel_offset = hwif->channel ? 0x74 : 0x70, unit = drive->dn & 1; |
| |
| pci_read_config_dword(dev, channel_offset, &triflex_timings); |
| |
| switch (drive->dma_mode) { |
| 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; |
| } |
| |
| triflex_timings &= ~(0xFFFF << (16 * unit)); |
| triflex_timings |= (timing << (16 * unit)); |
| |
| pci_write_config_dword(dev, channel_offset, triflex_timings); |
| } |
| |
| static void triflex_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive) |
| { |
| drive->dma_mode = drive->pio_mode; |
| triflex_set_mode(hwif, drive); |
| } |
| |
| static const struct ide_port_ops triflex_port_ops = { |
| .set_pio_mode = triflex_set_pio_mode, |
| .set_dma_mode = triflex_set_mode, |
| }; |
| |
| static const struct ide_port_info triflex_device __devinitdata = { |
| .name = DRV_NAME, |
| .enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}}, |
| .port_ops = &triflex_port_ops, |
| .pio_mask = ATA_PIO4, |
| .swdma_mask = ATA_SWDMA2, |
| .mwdma_mask = ATA_MWDMA2, |
| }; |
| |
| static int __devinit triflex_init_one(struct pci_dev *dev, |
| const struct pci_device_id *id) |
| { |
| return ide_pci_init_one(dev, &triflex_device, NULL); |
| } |
| |
| static const struct pci_device_id triflex_pci_tbl[] = { |
| { PCI_VDEVICE(COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE), 0 }, |
| { 0, }, |
| }; |
| MODULE_DEVICE_TABLE(pci, triflex_pci_tbl); |
| |
| static struct pci_driver triflex_pci_driver = { |
| .name = "TRIFLEX_IDE", |
| .id_table = triflex_pci_tbl, |
| .probe = triflex_init_one, |
| .remove = ide_pci_remove, |
| .suspend = ide_pci_suspend, |
| .resume = ide_pci_resume, |
| }; |
| |
| static int __init triflex_ide_init(void) |
| { |
| return ide_pci_register_driver(&triflex_pci_driver); |
| } |
| |
| static void __exit triflex_ide_exit(void) |
| { |
| pci_unregister_driver(&triflex_pci_driver); |
| } |
| |
| module_init(triflex_ide_init); |
| module_exit(triflex_ide_exit); |
| |
| MODULE_AUTHOR("Torben Mathiasen"); |
| MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE"); |
| MODULE_LICENSE("GPL"); |
| |
| |