^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) aten.c (c) 1997-8 Grant R. Guenther <grant@torque.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) Under the terms of the GNU General Public License.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) aten.c is a low-level protocol driver for the ATEN EH-100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) parallel port adapter. The EH-100 supports 4-bit and 8-bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) modes only. There is also an EH-132 which supports EPP mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) transfers. The EH-132 is not yet supported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) /* Changes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 1.01 GRG 1998.05.05 init_proto, release_proto
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define ATEN_VERSION "1.01"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include "paride.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define j44(a,b) ((((a>>4)&0x0f)|(b&0xf0))^0x88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /* cont = 0 - access the IDE register file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) cont = 1 - access the IDE command set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static int cont_map[2] = { 0x08, 0x20 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static void aten_write_regr( PIA *pi, int cont, int regr, int val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) { int r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) r = regr + cont_map[cont] + 0x80;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) w0(r); w2(0xe); w2(6); w0(val); w2(7); w2(6); w2(0xc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static int aten_read_regr( PIA *pi, int cont, int regr )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) { int a, b, r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) r = regr + cont_map[cont] + 0x40;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) switch (pi->mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) case 0: w0(r); w2(0xe); w2(6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) w2(7); w2(6); w2(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) a = r1(); w0(0x10); b = r1(); w2(0xc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return j44(a,b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) case 1: r |= 0x10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) w0(r); w2(0xe); w2(6); w0(0xff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) w2(0x27); w2(0x26); w2(0x20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) a = r0();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) w2(0x26); w2(0xc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return a;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static void aten_read_block( PIA *pi, char * buf, int count )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) { int k, a, b, c, d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) switch (pi->mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) case 0: w0(0x48); w2(0xe); w2(6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) for (k=0;k<count/2;k++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) w2(7); w2(6); w2(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) a = r1(); w0(0x58); b = r1();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) w2(0); d = r1(); w0(0x48); c = r1();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) buf[2*k] = j44(c,d);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) buf[2*k+1] = j44(a,b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) w2(0xc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) case 1: w0(0x58); w2(0xe); w2(6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) for (k=0;k<count/2;k++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) w2(0x27); w2(0x26); w2(0x22);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) a = r0(); w2(0x20); b = r0();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) buf[2*k] = b; buf[2*k+1] = a;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) w2(0x26); w2(0xc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static void aten_write_block( PIA *pi, char * buf, int count )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) { int k;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) w0(0x88); w2(0xe); w2(6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) for (k=0;k<count/2;k++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) w0(buf[2*k+1]); w2(0xe); w2(6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) w0(buf[2*k]); w2(7); w2(6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) w2(0xc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static void aten_connect ( PIA *pi )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) { pi->saved_r0 = r0();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) pi->saved_r2 = r2();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) w2(0xc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static void aten_disconnect ( PIA *pi )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) { w0(pi->saved_r0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) w2(pi->saved_r2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static void aten_log_adapter( PIA *pi, char * scratch, int verbose )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) { char *mode_string[2] = {"4-bit","8-bit"};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) printk("%s: aten %s, ATEN EH-100 at 0x%x, ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) pi->device,ATEN_VERSION,pi->port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) printk("mode %d (%s), delay %d\n",pi->mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) mode_string[pi->mode],pi->delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static struct pi_protocol aten = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) .name = "aten",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) .max_mode = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) .epp_first = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) .default_delay = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) .max_units = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) .write_regr = aten_write_regr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) .read_regr = aten_read_regr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) .write_block = aten_write_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) .read_block = aten_read_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) .connect = aten_connect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) .disconnect = aten_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) .log_adapter = aten_log_adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static int __init aten_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) return paride_register(&aten);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static void __exit aten_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) paride_unregister( &aten );
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) module_init(aten_init)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) module_exit(aten_exit)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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