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[/] [or1k/] [tags/] [before_ORP/] [uclinux/] [uClinux-2.0.x/] [include/] [asm-m68k/] [ide.h] - Rev 1765
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#ifndef _M68K_IDE_H #define _M68K_IDE_H /* Copyright(c) 1996 Kars de Jong */ /* Based on the ide driver from 1.2.13pl8 */ #include <linux/config.h> #ifdef CONFIG_AMIGA #include <asm/amigahw.h> #include <asm/amihdreg.h> #include <asm/amigaints.h> #endif /* CONFIG_AMIGA */ #ifdef CONFIG_ATARI #include <asm/atarihw.h> #include <asm/atarihdreg.h> #include <asm/atariints.h> #include <asm/atari_stdma.h> #endif /* CONFIG_ATARI */ #include <asm/bootinfo.h> struct hd_regs_struct { unsigned int hd_error, hd_nsector, hd_sector, hd_lcyl, hd_hcyl, hd_select, hd_status; }; static struct hd_regs_struct hd_regs; static void probe_m68k_ide (void); /* Undefine these again, they were defined for the PC. */ #undef IDE_ERROR_OFFSET #undef IDE_NSECTOR_OFFSET #undef IDE_SECTOR_OFFSET #undef IDE_LCYL_OFFSET #undef IDE_HCYL_OFFSET #undef IDE_SELECT_OFFSET #undef IDE_STATUS_OFFSET #undef IDE_FEATURE_OFFSET #undef IDE_COMMAND_OFFSET #undef SELECT_DRIVE #define IDE_ERROR_OFFSET hd_regs.hd_error #define IDE_NSECTOR_OFFSET hd_regs.hd_nsector #define IDE_SECTOR_OFFSET hd_regs.hd_sector #define IDE_LCYL_OFFSET hd_regs.hd_lcyl #define IDE_HCYL_OFFSET hd_regs.hd_hcyl #define IDE_SELECT_OFFSET hd_regs.hd_select #define IDE_STATUS_OFFSET hd_regs.hd_status #define IDE_FEATURE_OFFSET IDE_ERROR_OFFSET #define IDE_COMMAND_OFFSET IDE_STATUS_OFFSET #undef SUPPORT_VLB_SYNC #define SUPPORT_VLB_SYNC 0 #undef HD_DATA #define HD_DATA NULL /* 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) */ #if defined(CONFIG_ATARI) && !defined(CONFIG_AMIGA) #define STI() \ do { \ if (!intr_count) sti(); \ } while(0) #elif defined(CONFIG_ATARI) #define STI() \ do { \ if (!MACH_IS_ATARI || !intr_count) sti(); \ } while(0) #else /* !defined(CONFIG_ATARI) */ #define STI() sti() #endif #define SELECT_DRIVE(hwif,drive) OUT_BYTE((drive)->select.all, hwif->io_base+IDE_SELECT_OFFSET); #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) \ if (nr % 16) \ __asm__ __volatile__ \ ("movel %0,%/a0; \ movel %1,%/a1; \ movel %2,%/d6; \ subql #1,%/d6; \ 1:movew %/a0@,%/a1@+; \ dbra %/d6,1b" : \ : "g" (port), "g" (buf), "g" (nr) \ : "a0", "a1", "d6"); \ else \ __asm__ __volatile__ \ ("movel %0,%/a0; \ movel %1,%/a1; \ movel %2,%/d6; \ lsrl #4,%/d6; \ subql #1,%/d6; \ 1:movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ movew %/a0@,%/a1@+; \ dbra %/d6,1b" : \ : "g" (port), "g" (buf), "g" (nr) \ : "a0", "a1", "d6"); #define outsw(port, buf, nr) \ if (nr % 16) \ __asm__ __volatile__ \ ("movel %0,%/a0; \ movel %1,%/a1; \ movel %2,%/d6; \ subql #1,%/d6; \ 1:movew %/a1@+,%/a0@; \ dbra %/d6,1b" : \ : "g" (port), "g" (buf), "g" (nr) \ : "a0", "a1", "d6"); \ else \ __asm__ __volatile__ \ ("movel %0,%/a0; \ movel %1,%/a1; \ movel %2,%/d6; \ lsrl #4,%/d6; \ subql #1,%/d6; \ 1:movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ movew %/a1@+,%/a0@; \ dbra %/d6,1b" : \ : "g" (port), "g" (buf), "g" (nr) \ : "a0", "a1", "d6"); #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 big_endianize_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; } } } #endif /* _M68K_IDE_H */