4505153954
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 136 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000436.384967451@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
144 lines
3.2 KiB
C
144 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* IDE Chipset driver for the Compaq TriFlex IDE controller.
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*
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* Known to work with the Compaq Workstation 5x00 series.
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*
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* Copyright (C) 2002 Hewlett-Packard Development Group, L.P.
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* Author: Torben Mathiasen <torben.mathiasen@hp.com>
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*
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* Loosely based on the piix & svwks drivers.
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*
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* Documentation:
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* Not publicly available.
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*/
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#include <linux/types.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/ide.h>
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#include <linux/init.h>
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#define DRV_NAME "triflex"
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static void triflex_set_mode(ide_hwif_t *hwif, ide_drive_t *drive)
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{
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struct pci_dev *dev = to_pci_dev(hwif->dev);
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u32 triflex_timings = 0;
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u16 timing = 0;
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u8 channel_offset = hwif->channel ? 0x74 : 0x70, unit = drive->dn & 1;
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pci_read_config_dword(dev, channel_offset, &triflex_timings);
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switch (drive->dma_mode) {
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case XFER_MW_DMA_2:
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timing = 0x0103;
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break;
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case XFER_MW_DMA_1:
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timing = 0x0203;
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break;
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case XFER_MW_DMA_0:
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timing = 0x0808;
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break;
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case XFER_SW_DMA_2:
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case XFER_SW_DMA_1:
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case XFER_SW_DMA_0:
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timing = 0x0f0f;
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break;
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case XFER_PIO_4:
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timing = 0x0202;
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break;
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case XFER_PIO_3:
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timing = 0x0204;
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break;
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case XFER_PIO_2:
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timing = 0x0404;
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break;
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case XFER_PIO_1:
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timing = 0x0508;
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break;
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case XFER_PIO_0:
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timing = 0x0808;
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break;
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}
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triflex_timings &= ~(0xFFFF << (16 * unit));
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triflex_timings |= (timing << (16 * unit));
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pci_write_config_dword(dev, channel_offset, triflex_timings);
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}
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static void triflex_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
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{
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drive->dma_mode = drive->pio_mode;
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triflex_set_mode(hwif, drive);
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}
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static const struct ide_port_ops triflex_port_ops = {
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.set_pio_mode = triflex_set_pio_mode,
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.set_dma_mode = triflex_set_mode,
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};
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static const struct ide_port_info triflex_device = {
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.name = DRV_NAME,
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.enablebits = {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
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.port_ops = &triflex_port_ops,
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.pio_mask = ATA_PIO4,
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.swdma_mask = ATA_SWDMA2,
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.mwdma_mask = ATA_MWDMA2,
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};
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static int triflex_init_one(struct pci_dev *dev, const struct pci_device_id *id)
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{
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return ide_pci_init_one(dev, &triflex_device, NULL);
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}
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static const struct pci_device_id triflex_pci_tbl[] = {
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{ PCI_VDEVICE(COMPAQ, PCI_DEVICE_ID_COMPAQ_TRIFLEX_IDE), 0 },
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{ 0, },
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};
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MODULE_DEVICE_TABLE(pci, triflex_pci_tbl);
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#ifdef CONFIG_PM
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static int triflex_ide_pci_suspend(struct pci_dev *dev, pm_message_t state)
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{
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/*
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* We must not disable or powerdown the device.
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* APM bios refuses to suspend if IDE is not accessible.
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*/
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pci_save_state(dev);
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return 0;
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}
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#else
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#define triflex_ide_pci_suspend NULL
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#endif
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static struct pci_driver triflex_pci_driver = {
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.name = "TRIFLEX_IDE",
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.id_table = triflex_pci_tbl,
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.probe = triflex_init_one,
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.remove = ide_pci_remove,
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.suspend = triflex_ide_pci_suspend,
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.resume = ide_pci_resume,
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};
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static int __init triflex_ide_init(void)
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{
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return ide_pci_register_driver(&triflex_pci_driver);
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}
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static void __exit triflex_ide_exit(void)
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{
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pci_unregister_driver(&triflex_pci_driver);
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}
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module_init(triflex_ide_init);
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module_exit(triflex_ide_exit);
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MODULE_AUTHOR("Torben Mathiasen");
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MODULE_DESCRIPTION("PCI driver module for Compaq Triflex IDE");
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MODULE_LICENSE("GPL");
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