ide-std.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:2k
- /*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * IDE routines for typical pc-like standard configurations.
- *
- * Copyright (C) 1998, 1999, 2001 by Ralf Baechle
- */
- #include <linux/sched.h>
- #include <linux/ide.h>
- #include <linux/ioport.h>
- #include <linux/hdreg.h>
- #include <asm/ptrace.h>
- #include <asm/hdreg.h>
- static int std_ide_default_irq(ide_ioreg_t base)
- {
- switch (base) {
- case 0x1f0: return 14;
- case 0x170: return 15;
- case 0x1e8: return 11;
- case 0x168: return 10;
- case 0x1e0: return 8;
- case 0x160: return 12;
- default:
- return 0;
- }
- }
- static ide_ioreg_t std_ide_default_io_base(int index)
- {
- switch (index) {
- case 0: return 0x1f0;
- case 1: return 0x170;
- case 2: return 0x1e8;
- case 3: return 0x168;
- case 4: return 0x1e0;
- case 5: return 0x160;
- default:
- return 0;
- }
- }
- static void std_ide_init_hwif_ports (hw_regs_t *hw, ide_ioreg_t data_port,
- ide_ioreg_t ctrl_port, int *irq)
- {
- ide_ioreg_t reg = data_port;
- int i;
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
- hw->io_ports[i] = reg;
- reg += 1;
- }
- if (ctrl_port) {
- hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port;
- } else {
- hw->io_ports[IDE_CONTROL_OFFSET] = hw->io_ports[IDE_DATA_OFFSET] + 0x206;
- }
- if (irq != NULL)
- *irq = 0;
- hw->io_ports[IDE_IRQ_OFFSET] = 0;
- }
- static int std_ide_request_irq(unsigned int irq,
- void (*handler)(int,void *, struct pt_regs *),
- unsigned long flags, const char *device,
- void *dev_id)
- {
- return request_irq(irq, handler, flags, device, dev_id);
- }
- static void std_ide_free_irq(unsigned int irq, void *dev_id)
- {
- free_irq(irq, dev_id);
- }
- static int std_ide_check_region(ide_ioreg_t from, unsigned int extent)
- {
- return check_region(from, extent);
- }
- static void std_ide_request_region(ide_ioreg_t from, unsigned int extent,
- const char *name)
- {
- request_region(from, extent, name);
- }
- static void std_ide_release_region(ide_ioreg_t from, unsigned int extent)
- {
- release_region(from, extent);
- }
- struct ide_ops std_ide_ops = {
- &std_ide_default_irq,
- &std_ide_default_io_base,
- &std_ide_init_hwif_ports,
- &std_ide_request_irq,
- &std_ide_free_irq,
- &std_ide_check_region,
- &std_ide_request_region,
- &std_ide_release_region
- };