ide.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:4k
- /*
- * linux/include/asm-parisc/ide.h
- *
- * Copyright (C) 1994-1996 Linus Torvalds & authors
- */
- /*
- * This file contains the PARISC architecture specific IDE code.
- */
- #ifndef __ASM_PARISC_IDE_H
- #define __ASM_PARISC_IDE_H
- #ifdef __KERNEL__
- #include <linux/config.h>
- #include <asm/superio.h>
- #ifndef MAX_HWIFS
- #define MAX_HWIFS 2
- #endif
- static __inline__ int ide_default_irq(ide_ioreg_t base)
- {
- switch (base) {
- #ifdef CONFIG_SUPERIO
- case 0x1f0:
- case 0x170:
- return superio_get_ide_irq();
- #endif /* CONFIG_SUPERIO */
- default:
- return 0;
- }
- }
- static __inline__ ide_ioreg_t ide_default_io_base(int index)
- {
- switch (index) {
- #ifdef CONFIG_SUPERIO
- case 0: return (superio_get_ide_irq() ? 0x1f0 : 0);
- case 1: return (superio_get_ide_irq() ? 0x170 : 0);
- #endif /* CONFIG_SUPERIO */
- default:
- return 0;
- }
- }
- static __inline__ void 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 __inline__ void ide_init_default_hwifs(void)
- {
- #ifndef CONFIG_BLK_DEV_IDEPCI
- hw_regs_t hw;
- int index;
- for(index = 0; index < MAX_HWIFS; index++) {
- ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, NULL);
- hw.irq = ide_default_irq(ide_default_io_base(index));
- ide_register_hw(&hw, NULL);
- }
- #endif /* CONFIG_BLK_DEV_IDEPCI */
- }
- #define ide_request_irq(irq,hand,flg,dev,id) request_irq((irq),(hand),(flg),(dev),(id))
- #define ide_free_irq(irq,dev_id) free_irq((irq), (dev_id))
- #define ide_check_region(from,extent) check_region((from), (extent))
- #define ide_request_region(from,extent,name) request_region((from), (extent), (name))
- #define ide_release_region(from,extent) release_region((from), (extent))
- #define T_CHAR (0x0000) /* char: don't touch */
- #define T_SHORT (0x4000) /* short: 12 -> 21 */
- #define T_INT (0x8000) /* int: 1234 -> 4321 */
- #define T_TEXT (0xc000) /* text: 12 -> 21 */
- #define T_MASK_TYPE (0xc000)
- #define T_MASK_COUNT (0x3fff)
- #define D_CHAR(cnt) (T_CHAR | (cnt))
- #define D_SHORT(cnt) (T_SHORT | (cnt))
- #define D_INT(cnt) (T_INT | (cnt))
- #define D_TEXT(cnt) (T_TEXT | (cnt))
- static u_short driveid_types[] = {
- D_SHORT(10), /* config - vendor2 */
- D_TEXT(20), /* serial_no */
- D_SHORT(3), /* buf_type - ecc_bytes */
- D_TEXT(48), /* fw_rev - model */
- D_CHAR(2), /* max_multsect - vendor3 */
- D_SHORT(1), /* dword_io */
- D_CHAR(2), /* vendor4 - capability */
- D_SHORT(1), /* reserved50 */
- D_CHAR(4), /* vendor5 - tDMA */
- D_SHORT(4), /* field_valid - cur_sectors */
- D_INT(1), /* cur_capacity */
- D_CHAR(2), /* multsect - multsect_valid */
- D_INT(1), /* lba_capacity */
- D_SHORT(194) /* dma_1word - reservedyy */
- };
- #define num_driveid_types (sizeof(driveid_types)/sizeof(*driveid_types))
- static __inline__ void ide_fix_driveid(struct hd_driveid *id)
- {
- u_char *p = (u_char *)id;
- int i, j, cnt;
- u_char t;
- for (i = 0; i < num_driveid_types; i++) {
- cnt = driveid_types[i] & T_MASK_COUNT;
- switch (driveid_types[i] & T_MASK_TYPE) {
- case T_CHAR:
- p += cnt;
- break;
- case T_SHORT:
- for (j = 0; j < cnt; j++) {
- t = p[0];
- p[0] = p[1];
- p[1] = t;
- p += 2;
- }
- break;
- case T_INT:
- for (j = 0; j < cnt; j++) {
- t = p[0];
- p[0] = p[3];
- p[3] = t;
- t = p[1];
- p[1] = p[2];
- p[2] = t;
- p += 4;
- }
- break;
- case T_TEXT:
- for (j = 0; j < cnt; j += 2) {
- t = p[0];
- p[0] = p[1];
- p[1] = t;
- p += 2;
- }
- break;
- };
- }
- }
- /*
- * The following are not needed for the non-m68k ports
- */
- #define ide_ack_intr(hwif) (1)
- #define ide_release_lock(lock) do {} while (0)
- #define ide_get_lock(lock, hdlr, data) do {} while (0)
- #endif /* __KERNEL__ */
- #endif /* __ASM_PARISC_IDE_H */