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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 | /* on20.c (c) 1996-8 Grant R. Guenther <grant@torque.net> Under the terms of the GNU General Public License. on20.c is a low-level protocol driver for the Onspec 90c20 parallel to IDE adapter. */ /* Changes: 1.01 GRG 1998.05.06 init_proto, release_proto */ #define ON20_VERSION "1.01" #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 "paride.h" #define op(f) w2(4);w0(f);w2(5);w2(0xd);w2(5);w2(0xd);w2(5);w2(4); #define vl(v) w2(4);w0(v);w2(5);w2(7);w2(5);w2(4); #define j44(a,b) (((a>>4)&0x0f)|(b&0xf0)) /* cont = 0 - access the IDE register file cont = 1 - access the IDE command set */ static int on20_read_regr( PIA *pi, int cont, int regr ) { int h,l, r ; r = (regr<<2) + 1 + cont; op(1); vl(r); op(0); switch (pi->mode) { case 0: w2(4); w2(6); l = r1(); w2(4); w2(6); h = r1(); w2(4); w2(6); w2(4); w2(6); w2(4); return j44(l,h); case 1: w2(4); w2(0x26); r = r0(); w2(4); w2(0x26); w2(4); return r; } return -1; } static void on20_write_regr( PIA *pi, int cont, int regr, int val ) { int r; r = (regr<<2) + 1 + cont; op(1); vl(r); op(0); vl(val); op(0); vl(val); } static void on20_connect ( PIA *pi) { pi->saved_r0 = r0(); pi->saved_r2 = r2(); w2(4);w0(0);w2(0xc);w2(4);w2(6);w2(4);w2(6);w2(4); if (pi->mode) { op(2); vl(8); op(2); vl(9); } else { op(2); vl(0); op(2); vl(8); } } static void on20_disconnect ( PIA *pi ) { w2(4);w0(7);w2(4);w2(0xc);w2(4); w0(pi->saved_r0); w2(pi->saved_r2); } static void on20_read_block( PIA *pi, char * buf, int count ) { int k, l, h; op(1); vl(1); op(0); for (k=0;k<count;k++) if (pi->mode) { w2(4); w2(0x26); buf[k] = r0(); } else { w2(6); l = r1(); w2(4); w2(6); h = r1(); w2(4); buf[k] = j44(l,h); } w2(4); } static void on20_write_block( PIA *pi, char * buf, int count ) { int k; op(1); vl(1); op(0); for (k=0;k<count;k++) { w2(5); w0(buf[k]); w2(7); } w2(4); } static void on20_log_adapter( PIA *pi, char * scratch, int verbose ) { char *mode_string[2] = {"4-bit","8-bit"}; printk("%s: on20 %s, OnSpec 90c20 at 0x%x, ", pi->device,ON20_VERSION,pi->port); printk("mode %d (%s), delay %d\n",pi->mode, mode_string[pi->mode],pi->delay); } static struct pi_protocol on20 = { .owner = THIS_MODULE, .name = "on20", .max_mode = 2, .epp_first = 2, .default_delay = 1, .max_units = 1, .write_regr = on20_write_regr, .read_regr = on20_read_regr, .write_block = on20_write_block, .read_block = on20_read_block, .connect = on20_connect, .disconnect = on20_disconnect, .log_adapter = on20_log_adapter, }; static int __init on20_init(void) { return paride_register(&on20); } static void __exit on20_exit(void) { paride_unregister(&on20); } MODULE_LICENSE("GPL"); module_init(on20_init) module_exit(on20_exit) |