/* * 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 = { .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 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); #ifdef CONFIG_PM static int triflex_ide_pci_suspend(struct pci_dev *dev, pm_message_t state) { /* * We must not disable or powerdown the device. * APM bios refuses to suspend if IDE is not accessible. */ pci_save_state(dev); return 0; } #else #define triflex_ide_pci_suspend NULL #endif static struct pci_driver triflex_pci_driver = { .name = "TRIFLEX_IDE", .id_table = triflex_pci_tbl, .probe = triflex_init_one, .remove = ide_pci_remove, .suspend = triflex_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");