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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 | #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 */ |