ide.h
上传用户:lgb322
上传日期:2013-02-24
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文件大小:4k
- /*
- * BK Id: SCCS/s.ide.h 1.16 09/28/01 07:54:24 trini
- */
- /*
- * linux/include/asm-ppc/ide.h
- *
- * Copyright (C) 1994-1996 Linus Torvalds & authors */
- /*
- * This file contains the ppc architecture specific IDE code.
- */
- #ifndef __ASMPPC_IDE_H
- #define __ASMPPC_IDE_H
- #ifdef __KERNEL__
- #include <linux/sched.h>
- #include <asm/processor.h>
- #include <asm/mpc8xx.h>
- #ifndef MAX_HWIFS
- #define MAX_HWIFS 8
- #endif
- #include <asm/hdreg.h>
- #include <linux/config.h>
- #include <linux/hdreg.h>
- #include <linux/ioport.h>
- #include <asm/io.h>
- extern void ppc_generic_ide_fix_driveid(struct hd_driveid *id);
- struct ide_machdep_calls {
- int (*default_irq)(ide_ioreg_t base);
- ide_ioreg_t (*default_io_base)(int index);
- int (*ide_check_region)(ide_ioreg_t from, unsigned int extent);
- void (*ide_request_region)(ide_ioreg_t from,
- unsigned int extent,
- const char *name);
- void (*ide_release_region)(ide_ioreg_t from,
- unsigned int extent);
- void (*ide_init_hwif)(hw_regs_t *hw,
- ide_ioreg_t data_port,
- ide_ioreg_t ctrl_port,
- int *irq);
- };
- extern struct ide_machdep_calls ppc_ide_md;
- void ppc_generic_ide_fix_driveid(struct hd_driveid *id);
- #define ide_fix_driveid(id) ppc_generic_ide_fix_driveid((id))
- #undef SUPPORT_SLOW_DATA_PORTS
- #define SUPPORT_SLOW_DATA_PORTS 0
- #undef SUPPORT_VLB_SYNC
- #define SUPPORT_VLB_SYNC 0
- #define ide__sti() __sti()
- static __inline__ int ide_default_irq(ide_ioreg_t base)
- {
- if (ppc_ide_md.default_irq)
- return ppc_ide_md.default_irq(base);
- return 0;
- }
- static __inline__ ide_ioreg_t ide_default_io_base(int index)
- {
- if (ppc_ide_md.default_io_base)
- return ppc_ide_md.default_io_base(index);
- 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)
- {
- if (ppc_ide_md.ide_init_hwif != NULL)
- ppc_ide_md.ide_init_hwif(hw, data_port, ctrl_port, irq);
- }
- static __inline__ void ide_init_default_hwifs(void)
- {
- #ifndef CONFIG_BLK_DEV_IDEPCI
- hw_regs_t hw;
- int index;
- ide_ioreg_t base;
- for (index = 0; index < MAX_HWIFS; index++) {
- base = ide_default_io_base(index);
- if (base == 0)
- continue;
- ide_init_hwif_ports(&hw, base, 0, NULL);
- hw.irq = ide_default_irq(base);
- ide_register_hw(&hw, NULL);
- }
- #endif /* CONFIG_BLK_DEV_IDEPCI */
- }
- static __inline__ int ide_check_region (ide_ioreg_t from, unsigned int extent)
- {
- if (ppc_ide_md.ide_check_region)
- return ppc_ide_md.ide_check_region(from, extent);
- return 0;
- }
- static __inline__ void ide_request_region (ide_ioreg_t from, unsigned int extent, const char *name)
- {
- if (ppc_ide_md.ide_request_region)
- ppc_ide_md.ide_request_region(from, extent, name);
- }
- static __inline__ void ide_release_region (ide_ioreg_t from, unsigned int extent)
- {
- if (ppc_ide_md.ide_release_region)
- ppc_ide_md.ide_release_region(from, extent);
- }
- typedef union {
- unsigned all : 8; /* all of the bits together */
- struct {
- unsigned bit7 : 1; /* always 1 */
- unsigned lba : 1; /* using LBA instead of CHS */
- unsigned bit5 : 1; /* always 1 */
- unsigned unit : 1; /* drive select number, 0/1 */
- unsigned head : 4; /* always zeros here */
- } b;
- } select_t;
- #if !defined(ide_request_irq)
- #define ide_request_irq(irq,hand,flg,dev,id) request_irq((irq),(hand),(flg),(dev),(id))
- #endif
- #if !defined(ide_free_irq)
- #define ide_free_irq(irq,dev_id) free_irq((irq), (dev_id))
- #endif
- /*
- * The following are not needed for the non-m68k ports
- * unless direct IDE on 8xx
- */
- #if (defined CONFIG_APUS || defined CONFIG_BLK_DEV_MPC8xx_IDE )
- #define ide_ack_intr(hwif) (hwif->hw.ack_intr ? hwif->hw.ack_intr(hwif) : 1)
- #else
- #define ide_ack_intr(hwif) (1)
- #endif
- #define ide_release_lock(lock) do {} while (0)
- #define ide_get_lock(lock, hdlr, data) do {} while (0)
- #endif /* __KERNEL__ */
- #endif /* __ASMPPC_IDE_H */