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/* $Id$
*
* 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
*/
#ifndef _ASM_IDE_H
#define _ASM_IDE_H
#ifdef __KERNEL__
#ifndef MAX_HWIFS
#define MAX_HWIFS 6
#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, &hw->irq);
hw->irq = ide_ops->ide_default_irq(data_port);
}
/*
* This registers the standard ports for this architecture with the IDE
* driver.
*/
static inline void ide_init_default_hwifs(void)
{
#ifdef __DO_I_NEED_THIS
hw_regs_t hw;
int index;
for (index = 0; index < MAX_HWIFS; index++) {
ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, 0);
hw.irq = ide_default_irq(ide_default_io_base(index));
ide_register_hw(&hw, NULL);
}
#endif /* __DO_I_NEED_THIS */
}
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);
}
/*
* 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 */
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