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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 | // SPDX-License-Identifier: GPL-2.0-or-later /* * (c) 1998 Grant R. Guenther <grant@torque.net> * * 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. */ #include <linux/module.h> #include <linux/init.h> #include <linux/delay.h> #include <linux/kernel.h> #include <linux/types.h> #include <linux/wait.h> #include <asm/io.h> #include "pata_parport.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(struct pi_adapter *pi, int cont, int regr, int val) { regr += cont << 3; 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(struct pi_adapter *pi, int cont, int regr) { int a, b; regr += cont << 3; 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(struct pi_adapter *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(struct pi_adapter *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(struct pi_adapter *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(struct pi_adapter *pi) { w2(0xc); w0(0xa); w2(0x8); w2(0xc); w0(pi->saved_r0); w2(pi->saved_r2); } static void fit3_log_adapter(struct pi_adapter *pi) { char *mode_string[3] = { "4-bit", "8-bit", "EPP"}; dev_info(&pi->dev, "FIT 3000 adapter at 0x%x, mode %d (%s), delay %d\n", pi->port, pi->mode, mode_string[pi->mode], pi->delay); } static struct pi_protocol fit3 = { .owner = THIS_MODULE, .name = "fit3", .max_mode = 3, .epp_first = 2, .default_delay = 1, .max_units = 1, .write_regr = fit3_write_regr, .read_regr = fit3_read_regr, .write_block = fit3_write_block, .read_block = fit3_read_block, .connect = fit3_connect, .disconnect = fit3_disconnect, .log_adapter = fit3_log_adapter, }; MODULE_LICENSE("GPL"); MODULE_AUTHOR("Grant R. Guenther <grant@torque.net>"); MODULE_DESCRIPTION("Fidelity International Technology parallel port IDE adapter" "(newer models) protocol driver"); module_pata_parport_driver(fit3); |