ide.h
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:4k
- /*
- * 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.
- *
- * This file contains the MIPS architecture specific IDE code.
- *
- * Copyright (C) 1994-1996 Linus Torvalds & authors
- */
- /*
- * This file contains the MIPS architecture specific IDE code.
- */
- #ifndef __ASM_IDE_H
- #define __ASM_IDE_H
- #ifdef __KERNEL__
- #include <linux/config.h>
- #ifndef MAX_HWIFS
- # ifdef CONFIG_BLK_DEV_IDEPCI
- #define MAX_HWIFS 10
- # else
- #define MAX_HWIFS 6
- # endif
- #endif
- #define ide__sti() __sti()
- struct ide_ops {
- int (*ide_default_irq)(ide_ioreg_t base);
- ide_ioreg_t (*ide_default_io_base)(int index);
- void (*ide_init_hwif_ports)(hw_regs_t *hw, ide_ioreg_t data_port,
- ide_ioreg_t ctrl_port, int *irq);
- int (*ide_request_irq)(unsigned int irq, void (*handler)(int, void *,
- struct pt_regs *), unsigned long flags,
- const char *device, void *dev_id);
- void (*ide_free_irq)(unsigned int irq, void *dev_id);
- 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);
- };
- extern struct ide_ops *ide_ops;
- static __inline__ int ide_default_irq(ide_ioreg_t base)
- {
- return ide_ops->ide_default_irq(base);
- }
- static __inline__ ide_ioreg_t ide_default_io_base(int index)
- {
- return ide_ops->ide_default_io_base(index);
- }
- static inline void ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data_port,
- ide_ioreg_t ctrl_port, int *irq)
- {
- ide_ops->ide_init_hwif_ports(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;
- 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 */
- }
- typedef union {
- unsigned all : 8; /* all of the bits together */
- struct {
- unsigned head : 4; /* always zeros here */
- unsigned unit : 1; /* drive select number, 0 or 1 */
- unsigned bit5 : 1; /* always 1 */
- unsigned lba : 1; /* using LBA instead of CHS */
- unsigned bit7 : 1; /* always 1 */
- } b;
- } select_t;
- static __inline__ int ide_request_irq(unsigned int irq, void (*handler)(int,void *, struct pt_regs *),
- unsigned long flags, const char *device, void *dev_id)
- {
- return ide_ops->ide_request_irq(irq, handler, flags, device, dev_id);
- }
- static __inline__ void ide_free_irq(unsigned int irq, void *dev_id)
- {
- ide_ops->ide_free_irq(irq, dev_id);
- }
- static __inline__ int ide_check_region (ide_ioreg_t from, unsigned int extent)
- {
- return ide_ops->ide_check_region(from, extent);
- }
- static __inline__ void ide_request_region(ide_ioreg_t from,
- unsigned int extent, const char *name)
- {
- ide_ops->ide_request_region(from, extent, name);
- }
- static __inline__ void ide_release_region(ide_ioreg_t from,
- unsigned int extent)
- {
- ide_ops->ide_release_region(from, extent);
- }
- #if defined(CONFIG_SWAP_IO_SPACE) && defined(__MIPSEB__)
- #ifdef insl
- #undef insl
- #endif
- #ifdef outsl
- #undef outsl
- #endif
- #ifdef insw
- #undef insw
- #endif
- #ifdef outsw
- #undef outsw
- #endif
- #define insw(p,a,c)
- do {
- unsigned short *ptr = (unsigned short *)(a);
- unsigned int i = (c);
- while (i--)
- *ptr++ = inw(p);
- } while (0)
- #define insl(p,a,c)
- do {
- unsigned long *ptr = (unsigned long *)(a);
- unsigned int i = (c);
- while (i--)
- *ptr++ = inl(p);
- } while (0)
- #define outsw(p,a,c)
- do {
- unsigned short *ptr = (unsigned short *)(a);
- unsigned int i = (c);
- while (i--)
- outw(*ptr++, (p));
- } while (0)
- #define outsl(p,a,c) {
- unsigned long *ptr = (unsigned long *)(a);
- unsigned int i = (c);
- while (i--)
- outl(*ptr++, (p));
- } while (0)
- #endif /* defined(CONFIG_SWAP_IO_SPACE) && defined(__MIPSEB__) */
- /*
- * The following are not needed for the non-m68k ports
- */
- #define ide_ack_intr(hwif) (1)
- #define ide_fix_driveid(id) do {} while (0)
- #define ide_release_lock(lock) do {} while (0)
- #define ide_get_lock(lock, hdlr, data) do {} while (0)
- #endif /* __KERNEL__ */
- #endif /* __ASM_IDE_H */