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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 | /* kbic.c (c) 1997-8 Grant R. Guenther <grant@torque.net> Under the terms of the GNU public license. This is a low-level driver for the KBIC-951A and KBIC-971A parallel to IDE adapter chips from KingByte Information Systems. The chips are almost identical, however, the wakeup code required for the 971A interferes with the correct operation of the 951A, so this driver registers itself twice, once for each chip. */ /* Changes: 1.01 GRG 1998.05.06 init_proto, release_proto */ #define KBIC_VERSION "1.01" #include <linux/module.h> #include <linux/delay.h> #include <linux/kernel.h> #include <linux/types.h> #include <asm/io.h> #include "paride.h" #define r12w() (delay_p,inw(pi->port+1)&0xffff) #define j44(a,b) ((((a>>4)&0x0f)|(b&0xf0))^0x88) #define j53(w) (((w>>3)&0x1f)|((w>>4)&0xe0)) /* cont = 0 - access the IDE register file cont = 1 - access the IDE command set */ static int cont_map[2] = { 0x80, 0x40 }; static int kbic_read_regr( PIA *pi, int cont, int regr ) { int a, b, s; s = cont_map[cont]; switch (pi->mode) { case 0: w0(regr|0x18|s); w2(4); w2(6); w2(4); w2(1); w0(8); a = r1(); w0(0x28); b = r1(); w2(4); return j44(a,b); case 1: w0(regr|0x38|s); w2(4); w2(6); w2(4); w2(5); w0(8); a = r12w(); w2(4); return j53(a); case 2: w0(regr|0x08|s); w2(4); w2(6); w2(4); w2(0xa5); w2(0xa1); a = r0(); w2(4); return a; case 3: case 4: case 5: w0(0x20|s); w2(4); w2(6); w2(4); w3(regr); a = r4(); b = r4(); w2(4); w2(0); w2(4); return a; } return -1; } static void kbic_write_regr( PIA *pi, int cont, int regr, int val) { int s; s = cont_map[cont]; switch (pi->mode) { case 0: case 1: case 2: w0(regr|0x10|s); w2(4); w2(6); w2(4); w0(val); w2(5); w2(4); break; case 3: case 4: case 5: w0(0x20|s); w2(4); w2(6); w2(4); w3(regr); w4(val); w4(val); w2(4); w2(0); w2(4); break; } } static void k951_connect ( PIA *pi ) { pi->saved_r0 = r0(); pi->saved_r2 = r2(); w2(4); } static void k951_disconnect ( PIA *pi ) { w0(pi->saved_r0); w2(pi->saved_r2); } #define CCP(x) w2(0xc4);w0(0xaa);w0(0x55);w0(0);w0(0xff);w0(0x87);\ w0(0x78);w0(x);w2(0xc5);w2(0xc4);w0(0xff); static void k971_connect ( PIA *pi ) { pi->saved_r0 = r0(); pi->saved_r2 = r2(); CCP(0x20); w2(4); } static void k971_disconnect ( PIA *pi ) { CCP(0x30); w0(pi->saved_r0); w2(pi->saved_r2); } /* counts must be congruent to 0 MOD 4, but all known applications have this property. */ static void kbic_read_block( PIA *pi, char * buf, int count ) { int k, a, b; switch (pi->mode) { case 0: w0(0x98); w2(4); w2(6); w2(4); for (k=0;k<count/2;k++) { w2(1); w0(8); a = r1(); w0(0x28); b = r1(); buf[2*k] = j44(a,b); w2(5); b = r1(); w0(8); a = r1(); buf[2*k+1] = j44(a,b); w2(4); } break; case 1: w0(0xb8); w2(4); w2(6); w2(4); for (k=0;k<count/4;k++) { w0(0xb8); w2(4); w2(5); w0(8); buf[4*k] = j53(r12w()); w0(0xb8); buf[4*k+1] = j53(r12w()); w2(4); w2(5); buf[4*k+3] = j53(r12w()); w0(8); buf[4*k+2] = j53(r12w()); } w2(4); break; case 2: w0(0x88); w2(4); w2(6); w2(4); for (k=0;k<count/2;k++) { w2(0xa0); w2(0xa1); buf[2*k] = r0(); w2(0xa5); buf[2*k+1] = r0(); } w2(4); break; case 3: w0(0xa0); w2(4); w2(6); w2(4); w3(0); for (k=0;k<count;k++) buf[k] = r4(); w2(4); w2(0); w2(4); break; case 4: w0(0xa0); w2(4); w2(6); w2(4); w3(0); for (k=0;k<count/2;k++) ((u16 *)buf)[k] = r4w(); w2(4); w2(0); w2(4); break; case 5: w0(0xa0); w2(4); w2(6); w2(4); w3(0); for (k=0;k<count/4;k++) ((u32 *)buf)[k] = r4l(); w2(4); w2(0); w2(4); break; } } static void kbic_write_block( PIA *pi, char * buf, int count ) { int k; switch (pi->mode) { case 0: case 1: case 2: w0(0x90); w2(4); w2(6); w2(4); for(k=0;k<count/2;k++) { w0(buf[2*k+1]); w2(0); w2(4); w0(buf[2*k]); w2(5); w2(4); } break; case 3: w0(0xa0); w2(4); w2(6); w2(4); w3(0); for(k=0;k<count/2;k++) { w4(buf[2*k+1]); w4(buf[2*k]); } w2(4); w2(0); w2(4); break; case 4: w0(0xa0); w2(4); w2(6); w2(4); w3(0); for(k=0;k<count/2;k++) w4w(pi_swab16(buf,k)); w2(4); w2(0); w2(4); break; case 5: w0(0xa0); w2(4); w2(6); w2(4); w3(0); for(k=0;k<count/4;k++) w4l(pi_swab32(buf,k)); w2(4); w2(0); w2(4); break; } } static void kbic_log_adapter( PIA *pi, char * scratch, int verbose, char * chip ) { char *mode_string[6] = {"4-bit","5/3","8-bit", "EPP-8","EPP_16","EPP-32"}; printk("%s: kbic %s, KingByte %s at 0x%x, ", pi->device,KBIC_VERSION,chip,pi->port); printk("mode %d (%s), delay %d\n",pi->mode, mode_string[pi->mode],pi->delay); } static void k951_log_adapter( PIA *pi, char * scratch, int verbose ) { kbic_log_adapter(pi,scratch,verbose,"KBIC-951A"); } static void k971_log_adapter( PIA *pi, char * scratch, int verbose ) { kbic_log_adapter(pi,scratch,verbose,"KBIC-971A"); } static void kbic_init_proto( PIA *pi) { MOD_INC_USE_COUNT; } static void kbic_release_proto( PIA *pi) { MOD_DEC_USE_COUNT; } struct pi_protocol k951 = {"k951",0,6,3,1,1, kbic_write_regr, kbic_read_regr, kbic_write_block, kbic_read_block, k951_connect, k951_disconnect, 0, 0, 0, k951_log_adapter, kbic_init_proto, kbic_release_proto }; struct pi_protocol k971 = {"k971",0,6,3,1,1, kbic_write_regr, kbic_read_regr, kbic_write_block, kbic_read_block, k971_connect, k971_disconnect, 0, 0, 0, k971_log_adapter, kbic_init_proto, kbic_release_proto }; #ifdef MODULE int init_module(void) { int s5,s7; s5 = pi_register(&k951); s7 = pi_register(&k971); return (s5 || s7) - 1; } void cleanup_module(void) { pi_unregister( &k951 ); pi_unregister( &k971 ); } #endif /* end of kbic.c */ |