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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 | /* ktti.c (c) 1998 Grant R. Guenther <grant@torque.net> Under the terms of the GNU General Public License. ktti.c is a low-level protocol driver for the KT Technology parallel port adapter. This adapter is used in the "PHd" portable hard-drives. As far as I can tell, this device supports 4-bit mode _only_. */ #define KTTI_VERSION "1.0" #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 j44(a,b) (((a>>4)&0x0f)|(b&0xf0)) /* cont = 0 - access the IDE register file cont = 1 - access the IDE command set */ static int cont_map[2] = { 0x10, 0x08 }; static void ktti_write_regr( PIA *pi, int cont, int regr, int val) { int r; r = regr + cont_map[cont]; w0(r); w2(0xb); w2(0xa); w2(3); w2(6); w0(val); w2(3); w0(0); w2(6); w2(0xb); } static int ktti_read_regr( PIA *pi, int cont, int regr ) { int a, b, r; r = regr + cont_map[cont]; w0(r); w2(0xb); w2(0xa); w2(9); w2(0xc); w2(9); a = r1(); w2(0xc); b = r1(); w2(9); w2(0xc); w2(9); return j44(a,b); } static void ktti_read_block( PIA *pi, char * buf, int count ) { int k, a, b; for (k=0;k<count/2;k++) { w0(0x10); w2(0xb); w2(0xa); w2(9); w2(0xc); w2(9); a = r1(); w2(0xc); b = r1(); w2(9); buf[2*k] = j44(a,b); a = r1(); w2(0xc); b = r1(); w2(9); buf[2*k+1] = j44(a,b); } } static void ktti_write_block( PIA *pi, char * buf, int count ) { int k; for (k=0;k<count/2;k++) { w0(0x10); w2(0xb); w2(0xa); w2(3); w2(6); w0(buf[2*k]); w2(3); w0(buf[2*k+1]); w2(6); w2(0xb); } } static void ktti_connect ( PIA *pi ) { pi->saved_r0 = r0(); pi->saved_r2 = r2(); w2(0xb); w2(0xa); w0(0); w2(3); w2(6); } static void ktti_disconnect ( PIA *pi ) { w2(0xb); w2(0xa); w0(0xa0); w2(3); w2(4); w0(pi->saved_r0); w2(pi->saved_r2); } static void ktti_log_adapter( PIA *pi, char * scratch, int verbose ) { printk("%s: ktti %s, KT adapter at 0x%x, delay %d\n", pi->device,KTTI_VERSION,pi->port,pi->delay); } static struct pi_protocol ktti = { .owner = THIS_MODULE, .name = "ktti", .max_mode = 1, .epp_first = 2, .default_delay = 1, .max_units = 1, .write_regr = ktti_write_regr, .read_regr = ktti_read_regr, .write_block = ktti_write_block, .read_block = ktti_read_block, .connect = ktti_connect, .disconnect = ktti_disconnect, .log_adapter = ktti_log_adapter, }; static int __init ktti_init(void) { return pi_register(&ktti)-1; } static void __exit ktti_exit(void) { pi_unregister(&ktti); } MODULE_LICENSE("GPL"); module_init(ktti_init) module_exit(ktti_exit) |