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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 | /* fit3.c (c) 1998 Grant R. Guenther <grant@torque.net> Under the terms of the GNU public license. fit3.c is a low-level protocol driver for newer models of the Fidelity International Technology parallel port adapter. This adapter is used in their TransDisk 3000 portable hard-drives, as well as CD-ROM, PD-CD and other devices. The TD-2000 and certain older devices use a different protocol. Try the fit2 protocol module with them. NB: The FIT adapters do not appear to support the control registers. So, we map ALT_STATUS to STATUS and NO-OP writes to the device control register - this means that IDE reset will not work on these devices. */ #define FIT3_VERSION "1.0" #include <linux/module.h> #include <linux/delay.h> #include <linux/kernel.h> #include <linux/types.h> #include <linux/wait.h> #include <asm/io.h> #include "paride.h" #define j44(a,b) (((a>>3)&0x0f)|((b<<1)&0xf0)) #define w7(byte) {out_p(7,byte);} #define r7() (in_p(7) & 0xff) /* cont = 0 - access the IDE register file cont = 1 - access the IDE command set */ static void fit3_write_regr( PIA *pi, int cont, int regr, int val) { if (cont == 1) return; switch (pi->mode) { case 0: case 1: w2(0xc); w0(regr); w2(0x8); w2(0xc); w0(val); w2(0xd); w0(0); w2(0xc); break; case 2: w2(0xc); w0(regr); w2(0x8); w2(0xc); w4(val); w4(0); w2(0xc); break; } } static int fit3_read_regr( PIA *pi, int cont, int regr ) { int a, b; if (cont) { if (regr != 6) return 0xff; regr = 7; } switch (pi->mode) { case 0: w2(0xc); w0(regr + 0x10); w2(0x8); w2(0xc); w2(0xd); a = r1(); w2(0xf); b = r1(); w2(0xc); return j44(a,b); case 1: w2(0xc); w0(regr + 0x90); w2(0x8); w2(0xc); w2(0xec); w2(0xee); w2(0xef); a = r0(); w2(0xc); return a; case 2: w2(0xc); w0(regr + 0x90); w2(0x8); w2(0xc); w2(0xec); a = r4(); b = r4(); w2(0xc); return a; } return -1; } static void fit3_read_block( PIA *pi, char * buf, int count ) { int k, a, b, c, d; switch (pi->mode) { case 0: w2(0xc); w0(0x10); w2(0x8); w2(0xc); for (k=0;k<count/2;k++) { w2(0xd); a = r1(); w2(0xf); b = r1(); w2(0xc); c = r1(); w2(0xe); d = r1(); buf[2*k ] = j44(a,b); buf[2*k+1] = j44(c,d); } w2(0xc); break; case 1: w2(0xc); w0(0x90); w2(0x8); w2(0xc); w2(0xec); w2(0xee); for (k=0;k<count/2;k++) { w2(0xef); a = r0(); w2(0xee); b = r0(); buf[2*k ] = a; buf[2*k+1] = b; } w2(0xec); w2(0xc); break; case 2: w2(0xc); w0(0x90); w2(0x8); w2(0xc); w2(0xec); for (k=0;k<count;k++) buf[k] = r4(); w2(0xc); break; } } static void fit3_write_block( PIA *pi, char * buf, int count ) { int k; switch (pi->mode) { case 0: case 1: w2(0xc); w0(0); w2(0x8); w2(0xc); for (k=0;k<count/2;k++) { w0(buf[2*k ]); w2(0xd); w0(buf[2*k+1]); w2(0xc); } break; case 2: w2(0xc); w0(0); w2(0x8); w2(0xc); for (k=0;k<count;k++) w4(buf[k]); w2(0xc); break; } } static void fit3_connect ( PIA *pi ) { pi->saved_r0 = r0(); pi->saved_r2 = r2(); w2(0xc); w0(0); w2(0xa); if (pi->mode == 2) { w2(0xc); w0(0x9); w2(0x8); w2(0xc); } } static void fit3_disconnect ( PIA *pi ) { w2(0xc); w0(0xa); w2(0x8); w2(0xc); w0(pi->saved_r0); w2(pi->saved_r2); } static void fit3_log_adapter( PIA *pi, char * scratch, int verbose ) { char *mode_string[3] = {"4-bit","8-bit","EPP"}; printk("%s: fit3 %s, FIT 3000 adapter at 0x%x, " "mode %d (%s), delay %d\n", pi->device,FIT3_VERSION,pi->port, pi->mode,mode_string[pi->mode],pi->delay); } static void fit3_init_proto(PIA *pi) { MOD_INC_USE_COUNT; } static void fit3_release_proto(PIA *pi) { MOD_DEC_USE_COUNT; } struct pi_protocol fit3 = {"fit3",0,3,2,1,1, fit3_write_regr, fit3_read_regr, fit3_write_block, fit3_read_block, fit3_connect, fit3_disconnect, 0, 0, 0, fit3_log_adapter, fit3_init_proto, fit3_release_proto }; #ifdef MODULE int init_module(void) { return pi_register( &fit3 ) - 1; } void cleanup_module(void) { pi_unregister( &fit3 ); } #endif /* end of fit3.c */ |