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09c434b8a0
Add SPDX license identifiers to all files which: - Have no license information of any form - Have MODULE_LICENCE("GPL*") inside which was used in the initial scan/conversion to ignore the file These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
180 lines
4.5 KiB
C
180 lines
4.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 1996-1998 Linus Torvalds & authors (see below)
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*/
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/*
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* Authors:
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* Jaromir Koutek <miri@punknet.cz>,
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* Jan Harkes <jaharkes@cwi.nl>,
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* Mark Lord <mlord@pobox.com>
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* Some parts of code are from ali14xx.c and from rz1000.c.
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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 <asm/io.h>
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#define DRV_NAME "opti621"
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#define READ_REG 0 /* index of Read cycle timing register */
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#define WRITE_REG 1 /* index of Write cycle timing register */
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#define CNTRL_REG 3 /* index of Control register */
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#define STRAP_REG 5 /* index of Strap register */
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#define MISC_REG 6 /* index of Miscellaneous register */
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static int reg_base;
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static DEFINE_SPINLOCK(opti621_lock);
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/* Write value to register reg, base of register
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* is at reg_base (0x1f0 primary, 0x170 secondary,
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* if not changed by PCI configuration).
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* This is from setupvic.exe program.
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*/
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static void write_reg(u8 value, int reg)
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{
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inw(reg_base + 1);
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inw(reg_base + 1);
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outb(3, reg_base + 2);
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outb(value, reg_base + reg);
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outb(0x83, reg_base + 2);
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}
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/* Read value from register reg, base of register
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* is at reg_base (0x1f0 primary, 0x170 secondary,
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* if not changed by PCI configuration).
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* This is from setupvic.exe program.
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*/
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static u8 read_reg(int reg)
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{
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u8 ret = 0;
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inw(reg_base + 1);
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inw(reg_base + 1);
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outb(3, reg_base + 2);
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ret = inb(reg_base + reg);
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outb(0x83, reg_base + 2);
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return ret;
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}
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static void opti621_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
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{
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ide_drive_t *pair = ide_get_pair_dev(drive);
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unsigned long flags;
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unsigned long mode = drive->pio_mode, pair_mode;
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const u8 pio = mode - XFER_PIO_0;
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u8 tim, misc, addr_pio = pio, clk;
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/* DRDY is default 2 (by OPTi Databook) */
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static const u8 addr_timings[2][5] = {
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{ 0x20, 0x10, 0x00, 0x00, 0x00 }, /* 33 MHz */
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{ 0x10, 0x10, 0x00, 0x00, 0x00 }, /* 25 MHz */
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};
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static const u8 data_rec_timings[2][5] = {
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{ 0x5b, 0x45, 0x32, 0x21, 0x20 }, /* 33 MHz */
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{ 0x48, 0x34, 0x21, 0x10, 0x10 } /* 25 MHz */
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};
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ide_set_drivedata(drive, (void *)mode);
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if (pair) {
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pair_mode = (unsigned long)ide_get_drivedata(pair);
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if (pair_mode && pair_mode < mode)
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addr_pio = pair_mode - XFER_PIO_0;
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}
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spin_lock_irqsave(&opti621_lock, flags);
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reg_base = hwif->io_ports.data_addr;
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/* allow Register-B */
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outb(0xc0, reg_base + CNTRL_REG);
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/* hmm, setupvic.exe does this ;-) */
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outb(0xff, reg_base + 5);
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/* if reads 0xff, adapter not exist? */
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(void)inb(reg_base + CNTRL_REG);
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/* if reads 0xc0, no interface exist? */
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read_reg(CNTRL_REG);
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/* check CLK speed */
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clk = read_reg(STRAP_REG) & 1;
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printk(KERN_INFO "%s: CLK = %d MHz\n", hwif->name, clk ? 25 : 33);
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tim = data_rec_timings[clk][pio];
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misc = addr_timings[clk][addr_pio];
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/* select Index-0/1 for Register-A/B */
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write_reg(drive->dn & 1, MISC_REG);
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/* set read cycle timings */
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write_reg(tim, READ_REG);
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/* set write cycle timings */
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write_reg(tim, WRITE_REG);
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/* use Register-A for drive 0 */
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/* use Register-B for drive 1 */
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write_reg(0x85, CNTRL_REG);
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/* set address setup, DRDY timings, */
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/* and read prefetch for both drives */
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write_reg(misc, MISC_REG);
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spin_unlock_irqrestore(&opti621_lock, flags);
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}
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static const struct ide_port_ops opti621_port_ops = {
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.set_pio_mode = opti621_set_pio_mode,
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};
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static const struct ide_port_info opti621_chipset = {
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.name = DRV_NAME,
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.enablebits = { {0x45, 0x80, 0x00}, {0x40, 0x08, 0x00} },
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.port_ops = &opti621_port_ops,
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.host_flags = IDE_HFLAG_NO_DMA,
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.pio_mask = ATA_PIO4,
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};
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static int opti621_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, &opti621_chipset, NULL);
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}
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static const struct pci_device_id opti621_pci_tbl[] = {
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{ PCI_VDEVICE(OPTI, PCI_DEVICE_ID_OPTI_82C621), 0 },
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{ PCI_VDEVICE(OPTI, PCI_DEVICE_ID_OPTI_82C825), 0 },
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{ 0, },
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};
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MODULE_DEVICE_TABLE(pci, opti621_pci_tbl);
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static struct pci_driver opti621_pci_driver = {
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.name = "Opti621_IDE",
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.id_table = opti621_pci_tbl,
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.probe = opti621_init_one,
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.remove = ide_pci_remove,
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.suspend = ide_pci_suspend,
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.resume = ide_pci_resume,
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};
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static int __init opti621_ide_init(void)
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{
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return ide_pci_register_driver(&opti621_pci_driver);
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}
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static void __exit opti621_ide_exit(void)
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{
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pci_unregister_driver(&opti621_pci_driver);
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}
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module_init(opti621_ide_init);
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module_exit(opti621_ide_exit);
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MODULE_AUTHOR("Jaromir Koutek, Jan Harkes, Mark Lord");
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MODULE_DESCRIPTION("PCI driver module for Opti621 IDE");
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MODULE_LICENSE("GPL");
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