home *** CD-ROM | disk | FTP | other *** search
- /*
- * linux/include/asm-m68k/ide.h
- *
- * Copyright (C) 1994-1996 Linus Torvalds & authors
- */
-
- /* Copyright(c) 1996 Kars de Jong */
- /* Based on the ide driver from 1.2.13pl8 */
-
- /*
- * Credits (alphabetical):
- *
- * - Bjoern Brauel
- * - Kars de Jong
- * - Torsten Ebeling
- * - Dwight Engen
- * - Thorsten Floeck
- * - Roman Hodek
- * - Guenther Kelleter
- * - Chris Lawrence
- * - Michael Rausch
- * - Christian Sauer
- * - Michael Schmitz
- * - Jes Soerensen
- * - Michael Thurm
- * - Geert Uytterhoeven
- */
-
- #ifndef _M68K_IDE_H
- #define _M68K_IDE_H
-
- #ifdef __KERNEL__
-
- #include <linux/config.h>
-
- #include <asm/setup.h>
- #include <asm/io.h>
- #include <asm/irq.h>
-
- #ifdef CONFIG_ATARI
- #include <asm/atari_stdma.h>
- #endif
-
- #ifdef CONFIG_MAC
- #include <asm/macints.h>
- #endif
-
- typedef unsigned char * ide_ioreg_t;
-
- #ifndef MAX_HWIFS
- #define MAX_HWIFS 4 /* same as the other archs */
- #endif
-
- static __inline int ide_default_irq (ide_ioreg_t base)
- {
- return 0;
- }
-
- /*
- * Can we do this in a generic manner??
- */
- static __inline__ void ide_init_hwif_ports (ide_ioreg_t *p, ide_ioreg_t base, int *irq)
- {
- printk("ide_init_hwif_ports: must not be called\n");
- }
-
- 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 or 1 */
- unsigned head : 4; /* always zeros here */
- } b;
- } select_t;
-
- #ifdef CONFIG_MAC /* MSch: Hack; wrapper for ide_intr */
- void mac_ide_intr(int irq, void *dev_id, struct pt_regs *regs);
- #endif
-
- 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)
- {
- #ifdef CONFIG_AMIGA
- if (MACH_IS_AMIGA)
- return request_irq(irq, handler, 0, device, dev_id);
- #endif /* CONFIG_AMIGA */
- #ifdef CONFIG_MAC
- if (MACH_IS_MAC)
- #if 0 /* MSch Hack: maybe later we'll call ide_intr without a wrapper */
- return nubus_request_irq(12, dev_id, handler);
- #else
- return nubus_request_irq(12, dev_id, mac_ide_intr);
- #endif
- #endif /* CONFIG_MAC */
- return 0;
- }
-
- static __inline__ void ide_free_irq(unsigned int irq, void *dev_id)
- {
- #ifdef CONFIG_AMIGA
- if (MACH_IS_AMIGA)
- free_irq(irq, dev_id);
- #endif /* CONFIG_AMIGA */
- #ifdef CONFIG_MAC
- if (MACH_IS_MAC)
- nubus_free_irq(12);
- #endif /* CONFIG_MAC */
- }
-
- /*
- * We should really implement those some day.
- */
- static __inline__ int ide_check_region (ide_ioreg_t from, unsigned int extent)
- {
- return 0;
- }
-
- static __inline__ void ide_request_region (ide_ioreg_t from, unsigned int extent, const char *name)
- {
- }
-
- static __inline__ void ide_release_region (ide_ioreg_t from, unsigned int extent)
- {
- }
-
- #undef SUPPORT_SLOW_DATA_PORTS
- #define SUPPORT_SLOW_DATA_PORTS 0
-
- #undef SUPPORT_VLB_SYNC
- #define SUPPORT_VLB_SYNC 0
-
- #undef HD_DATA
- #define HD_DATA NULL
-
- #define insl(data_reg, buffer, wcount) insw(data_reg, buffer, (wcount)<<1)
- #define outsl(data_reg, buffer, wcount) outsw(data_reg, buffer, (wcount)<<1)
-
- #define insw(port, buf, nr) ({ \
- unsigned char *_port = (unsigned char *)(port); \
- unsigned char *_buf = (buf); \
- int _nr = (nr); \
- unsigned long _tmp; \
- \
- if (_nr & 15) { \
- _tmp = (_nr & 15) - 1; \
- asm volatile ( \
- "1: movew %2@,%0@+; dbra %1,1b" \
- : "=a" (_buf), "=d" (_tmp) \
- : "a" (_port), "0" (_buf), \
- "1" (_tmp)); \
- } \
- if (_nr >> 4) { \
- _tmp = (_nr >> 4) - 1; \
- asm volatile ( \
- "1: " \
- "movew %2@,%0@+; " \
- "movew %2@,%0@+; " \
- "movew %2@,%0@+; " \
- "movew %2@,%0@+; " \
- "movew %2@,%0@+; " \
- "movew %2@,%0@+; " \
- "movew %2@,%0@+; " \
- "movew %2@,%0@+; " \
- "movew %2@,%0@+; " \
- "movew %2@,%0@+; " \
- "movew %2@,%0@+; " \
- "movew %2@,%0@+; " \
- "movew %2@,%0@+; " \
- "movew %2@,%0@+; " \
- "movew %2@,%0@+; " \
- "movew %2@,%0@+; " \
- "dbra %1,1b" \
- : "=a" (_buf), "=d" (_tmp) \
- : "a" (_port), "0" (_buf), \
- "1" (_tmp)); \
- } \
- })
-
- #define outsw(port, buf, nr) ({ \
- unsigned char *_port = (unsigned char *)(port); \
- unsigned char *_buf = (buf); \
- int _nr = (nr); \
- unsigned long _tmp; \
- \
- if (_nr & 15) { \
- _tmp = (_nr & 15) - 1; \
- asm volatile ( \
- "1: movew %0@+,%2@; dbra %1,1b" \
- : "=a" (_buf), "=d" (_tmp) \
- : "a" (_port), "0" (_buf), \
- "1" (_tmp)); \
- } \
- if (_nr >> 4) { \
- _tmp = (_nr >> 4) - 1; \
- asm volatile ( \
- "1: " \
- "movew %0@+,%2@; " \
- "movew %0@+,%2@; " \
- "movew %0@+,%2@; " \
- "movew %0@+,%2@; " \
- "movew %0@+,%2@; " \
- "movew %0@+,%2@; " \
- "movew %0@+,%2@; " \
- "movew %0@+,%2@; " \
- "movew %0@+,%2@; " \
- "movew %0@+,%2@; " \
- "movew %0@+,%2@; " \
- "movew %0@+,%2@; " \
- "movew %0@+,%2@; " \
- "movew %0@+,%2@; " \
- "movew %0@+,%2@; " \
- "movew %0@+,%2@; " \
- "dbra %1,1b" \
- : "=a" (_buf), "=d" (_tmp) \
- : "a" (_port), "0" (_buf), \
- "1" (_tmp)); \
- } \
- })
-
- #ifdef CONFIG_ATARI
- #define insl_swapw(data_reg, buffer, wcount) \
- insw_swapw(data_reg, buffer, (wcount)<<1)
- #define outsl_swapw(data_reg, buffer, wcount) \
- outsw_swapw(data_reg, buffer, (wcount)<<1)
-
- #define insw_swapw(port, buf, nr) \
- if ((nr) % 8) \
- __asm__ __volatile__ \
- ("movel %0,%/a0; \
- movel %1,%/a1; \
- movel %2,%/d6; \
- subql #1,%/d6; \
- 1:movew %/a0@,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a1@+; \
- dbra %/d6,1b" : \
- : "g" (port), "g" (buf), "g" (nr) \
- : "d0", "a0", "a1", "d6"); \
- else \
- __asm__ __volatile__ \
- ("movel %0,%/a0; \
- movel %1,%/a1; \
- movel %2,%/d6; \
- lsrl #3,%/d6; \
- subql #1,%/d6; \
- 1:movew %/a0@,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a1@+; \
- movew %/a0@,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a1@+; \
- movew %/a0@,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a1@+; \
- movew %/a0@,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a1@+; \
- movew %/a0@,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a1@+; \
- movew %/a0@,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a1@+; \
- movew %/a0@,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a1@+; \
- movew %/a0@,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a1@+; \
- dbra %/d6,1b" : \
- : "g" (port), "g" (buf), "g" (nr) \
- : "d0", "a0", "a1", "d6")
-
- #define outsw_swapw(port, buf, nr) \
- if ((nr) % 8) \
- __asm__ __volatile__ \
- ("movel %0,%/a0; \
- movel %1,%/a1; \
- movel %2,%/d6; \
- subql #1,%/d6; \
- 1:movew %/a1@+,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a0@; \
- dbra %/d6,1b" : \
- : "g" (port), "g" (buf), "g" (nr) \
- : "d0", "a0", "a1", "d6"); \
- else \
- __asm__ __volatile__ \
- ("movel %0,%/a0; \
- movel %1,%/a1; \
- movel %2,%/d6; \
- lsrl #3,%/d6; \
- subql #1,%/d6; \
- 1:movew %/a1@+,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a0@; \
- movew %/a1@+,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a0@; \
- movew %/a1@+,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a0@; \
- movew %/a1@+,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a0@; \
- movew %/a1@+,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a0@; \
- movew %/a1@+,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a0@; \
- movew %/a1@+,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a0@; \
- movew %/a1@+,%/d0; \
- rolw #8,%/d0; \
- movew %/d0,%/a0@; \
- dbra %/d6,1b" : \
- : "g" (port), "g" (buf), "g" (nr) \
- : "d0", "a0", "a1", "d6")
-
- #endif /* CONFIG_ATARI */
-
- #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))
-
- #if defined(CONFIG_AMIGA) || defined (CONFIG_MAC)
- static u_short driveid_types[] = {
- D_SHORT(10), /* config - vendor2 */
- D_TEXT(20), /* serial_no */
- D_SHORT(3), /* buf_type, buf_size - 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))
- #endif /* CONFIG_AMIGA */
-
- static __inline__ void ide_fix_driveid(struct hd_driveid *id)
- {
- #if defined(CONFIG_AMIGA) || defined (CONFIG_MAC)
- u_char *p = (u_char *)id;
- int i, j, cnt;
- u_char t;
-
- if (!MACH_IS_AMIGA && !MACH_IS_MAC)
- return;
- 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;
- }
- }
- #endif /* CONFIG_AMIGA */
- }
-
- static __inline__ void ide_release_lock (int *ide_lock)
- {
- #ifdef CONFIG_ATARI
- if (MACH_IS_ATARI) {
- if (*ide_lock == 0) {
- printk("ide_release_lock: bug\n");
- return;
- }
- *ide_lock = 0;
- stdma_release();
- }
- #endif /* CONFIG_ATARI */
- }
-
- static __inline__ void ide_get_lock (int *ide_lock, void (*handler)(int, void *, struct pt_regs *), void *data)
- {
- #ifdef CONFIG_ATARI
- if (MACH_IS_ATARI) {
- if (*ide_lock == 0) {
- if (in_interrupt() > 0)
- panic( "Falcon IDE hasn't ST-DMA lock in interrupt" );
- stdma_lock(handler, data);
- *ide_lock = 1;
- }
- }
- #endif /* CONFIG_ATARI */
- }
-
- #define ide_ack_intr(hwif) ((hwif)->ack_intr ? (hwif)->ack_intr(hwif) : 1)
-
- /*
- * On the Atari, we sometimes can't enable interrupts:
- */
-
- /* MSch: changed sti() to STI() wherever possible in ide.c; moved STI() def.
- * to asm/ide.h
- */
- /* The Atari interrupt structure strictly requires that the IPL isn't lowered
- * uncontrolled in an interrupt handler. In the concrete case, the IDE
- * interrupt is already a slow int, so the irq is already disabled at the time
- * the handler is called, and the IPL has been lowered to the minimum value
- * possible. To avoid going below that, STI() checks for being called inside
- * an interrupt, and in that case it does nothing. Hope that is reasonable and
- * works. (Roman)
- */
- #ifdef MACH_ATARI_ONLY
- #define ide__sti() \
- do { \
- if (!in_interrupt()) __sti(); \
- } while(0)
- #elif defined(CONFIG_ATARI)
- #define ide__sti() \
- do { \
- if (!MACH_IS_ATARI || !in_interrupt()) sti(); \
- } while(0)
- #else /* !defined(CONFIG_ATARI) */
- #define ide__sti() __sti()
- #endif
-
- #endif /* __KERNEL__ */
-
- #endif /* _M68K_IDE_H */
-