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Diffstat (limited to 'drivers/block/paride/epat.c')
-rw-r--r--drivers/block/paride/epat.c340
1 files changed, 0 insertions, 340 deletions
diff --git a/drivers/block/paride/epat.c b/drivers/block/paride/epat.c
deleted file mode 100644
index 1bcdff77322e..000000000000
--- a/drivers/block/paride/epat.c
+++ /dev/null
@@ -1,340 +0,0 @@
-/*
- epat.c (c) 1997-8 Grant R. Guenther <grant@torque.net>
- Under the terms of the GNU General Public License.
-
- This is the low level protocol driver for the EPAT parallel
- to IDE adapter from Shuttle Technologies. This adapter is
- used in many popular parallel port disk products such as the
- SyQuest EZ drives, the Avatar Shark and the Imation SuperDisk.
-
-*/
-
-/* Changes:
-
- 1.01 GRG 1998.05.06 init_proto, release_proto
- 1.02 Joshua b. Jore CPP(renamed), epat_connect, epat_disconnect
-
-*/
-
-#define EPAT_VERSION "1.02"
-
-#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))
-#define j53(a,b) (((a>>3)&0x1f)+((b<<4)&0xe0))
-
-static int epatc8;
-
-module_param(epatc8, int, 0);
-MODULE_PARM_DESC(epatc8, "support for the Shuttle EP1284 chip, "
- "used in any recent Imation SuperDisk (LS-120) drive.");
-
-/* cont = 0 IDE register file
- cont = 1 IDE control registers
- cont = 2 internal EPAT registers
-*/
-
-static int cont_map[3] = { 0x18, 0x10, 0 };
-
-static void epat_write_regr( PIA *pi, int cont, int regr, int val)
-
-{ int r;
-
- r = regr + cont_map[cont];
-
- switch (pi->mode) {
-
- case 0:
- case 1:
- case 2: w0(0x60+r); w2(1); w0(val); w2(4);
- break;
-
- case 3:
- case 4:
- case 5: w3(0x40+r); w4(val);
- break;
-
- }
-}
-
-static int epat_read_regr( PIA *pi, int cont, int regr )
-
-{ int a, b, r;
-
- r = regr + cont_map[cont];
-
- switch (pi->mode) {
-
- case 0: w0(r); w2(1); w2(3);
- a = r1(); w2(4); b = r1();
- return j44(a,b);
-
- case 1: w0(0x40+r); w2(1); w2(4);
- a = r1(); b = r2(); w0(0xff);
- return j53(a,b);
-
- case 2: w0(0x20+r); w2(1); w2(0x25);
- a = r0(); w2(4);
- return a;
-
- case 3:
- case 4:
- case 5: w3(r); w2(0x24); a = r4(); w2(4);
- return a;
-
- }
- return -1; /* never gets here */
-}
-
-static void epat_read_block( PIA *pi, char * buf, int count )
-
-{ int k, ph, a, b;
-
- switch (pi->mode) {
-
- case 0: w0(7); w2(1); w2(3); w0(0xff);
- ph = 0;
- for(k=0;k<count;k++) {
- if (k == count-1) w0(0xfd);
- w2(6+ph); a = r1();
- if (a & 8) b = a;
- else { w2(4+ph); b = r1(); }
- buf[k] = j44(a,b);
- ph = 1 - ph;
- }
- w0(0); w2(4);
- break;
-
- case 1: w0(0x47); w2(1); w2(5); w0(0xff);
- ph = 0;
- for(k=0;k<count;k++) {
- if (k == count-1) w0(0xfd);
- w2(4+ph);
- a = r1(); b = r2();
- buf[k] = j53(a,b);
- ph = 1 - ph;
- }
- w0(0); w2(4);
- break;
-
- case 2: w0(0x27); w2(1); w2(0x25); w0(0);
- ph = 0;
- for(k=0;k<count-1;k++) {
- w2(0x24+ph);
- buf[k] = r0();
- ph = 1 - ph;
- }
- w2(0x26); w2(0x27); buf[count-1] = r0();
- w2(0x25); w2(4);
- break;
-
- case 3: w3(0x80); w2(0x24);
- for(k=0;k<count-1;k++) buf[k] = r4();
- w2(4); w3(0xa0); w2(0x24); buf[count-1] = r4();
- w2(4);
- break;
-
- case 4: w3(0x80); w2(0x24);
- for(k=0;k<(count/2)-1;k++) ((u16 *)buf)[k] = r4w();
- buf[count-2] = r4();
- w2(4); w3(0xa0); w2(0x24); buf[count-1] = r4();
- w2(4);
- break;
-
- case 5: w3(0x80); w2(0x24);
- for(k=0;k<(count/4)-1;k++) ((u32 *)buf)[k] = r4l();
- for(k=count-4;k<count-1;k++) buf[k] = r4();
- w2(4); w3(0xa0); w2(0x24); buf[count-1] = r4();
- w2(4);
- break;
-
- }
-}
-
-static void epat_write_block( PIA *pi, char * buf, int count )
-
-{ int ph, k;
-
- switch (pi->mode) {
-
- case 0:
- case 1:
- case 2: w0(0x67); w2(1); w2(5);
- ph = 0;
- for(k=0;k<count;k++) {
- w0(buf[k]);
- w2(4+ph);
- ph = 1 - ph;
- }
- w2(7); w2(4);
- break;
-
- case 3: w3(0xc0);
- for(k=0;k<count;k++) w4(buf[k]);
- w2(4);
- break;
-
- case 4: w3(0xc0);
- for(k=0;k<(count/2);k++) w4w(((u16 *)buf)[k]);
- w2(4);
- break;
-
- case 5: w3(0xc0);
- for(k=0;k<(count/4);k++) w4l(((u32 *)buf)[k]);
- w2(4);
- break;
-
- }
-}
-
-/* these macros access the EPAT registers in native addressing */
-
-#define WR(r,v) epat_write_regr(pi,2,r,v)
-#define RR(r) (epat_read_regr(pi,2,r))
-
-/* and these access the IDE task file */
-
-#define WRi(r,v) epat_write_regr(pi,0,r,v)
-#define RRi(r) (epat_read_regr(pi,0,r))
-
-/* FIXME: the CPP stuff should be fixed to handle multiple EPATs on a chain */
-
-#define CPP(x) w2(4);w0(0x22);w0(0xaa);w0(0x55);w0(0);w0(0xff);\
- w0(0x87);w0(0x78);w0(x);w2(4);w2(5);w2(4);w0(0xff);
-
-static void epat_connect ( PIA *pi )
-
-{ pi->saved_r0 = r0();
- pi->saved_r2 = r2();
-
- /* Initialize the chip */
- CPP(0);
-
- if (epatc8) {
- CPP(0x40);CPP(0xe0);
- w0(0);w2(1);w2(4);
- WR(0x8,0x12);WR(0xc,0x14);WR(0x12,0x10);
- WR(0xe,0xf);WR(0xf,4);
- /* WR(0xe,0xa);WR(0xf,4); */
- WR(0xe,0xd);WR(0xf,0);
- /* CPP(0x30); */
- }
-
- /* Connect to the chip */
- CPP(0xe0);
- w0(0);w2(1);w2(4); /* Idle into SPP */
- if (pi->mode >= 3) {
- w0(0);w2(1);w2(4);w2(0xc);
- /* Request EPP */
- w0(0x40);w2(6);w2(7);w2(4);w2(0xc);w2(4);
- }
-
- if (!epatc8) {
- WR(8,0x10); WR(0xc,0x14); WR(0xa,0x38); WR(0x12,0x10);
- }
-}
-
-static void epat_disconnect (PIA *pi)
-{ CPP(0x30);
- w0(pi->saved_r0);
- w2(pi->saved_r2);
-}
-
-static int epat_test_proto( PIA *pi, char * scratch, int verbose )
-
-{ int k, j, f, cc;
- int e[2] = {0,0};
-
- epat_connect(pi);
- cc = RR(0xd);
- epat_disconnect(pi);
-
- epat_connect(pi);
- for (j=0;j<2;j++) {
- WRi(6,0xa0+j*0x10);
- for (k=0;k<256;k++) {
- WRi(2,k^0xaa);
- WRi(3,k^0x55);
- if (RRi(2) != (k^0xaa)) e[j]++;
- }
- }
- epat_disconnect(pi);
-
- f = 0;
- epat_connect(pi);
- WR(0x13,1); WR(0x13,0); WR(0xa,0x11);
- epat_read_block(pi,scratch,512);
-
- for (k=0;k<256;k++) {
- if ((scratch[2*k] & 0xff) != k) f++;
- if ((scratch[2*k+1] & 0xff) != (0xff-k)) f++;
- }
- epat_disconnect(pi);
-
- if (verbose) {
- printk("%s: epat: port 0x%x, mode %d, ccr %x, test=(%d,%d,%d)\n",
- pi->device,pi->port,pi->mode,cc,e[0],e[1],f);
- }
-
- return (e[0] && e[1]) || f;
-}
-
-static void epat_log_adapter( PIA *pi, char * scratch, int verbose )
-
-{ int ver;
- char *mode_string[6] =
- {"4-bit","5/3","8-bit","EPP-8","EPP-16","EPP-32"};
-
- epat_connect(pi);
- WR(0xa,0x38); /* read the version code */
- ver = RR(0xb);
- epat_disconnect(pi);
-
- printk("%s: epat %s, Shuttle EPAT chip %x at 0x%x, ",
- pi->device,EPAT_VERSION,ver,pi->port);
- printk("mode %d (%s), delay %d\n",pi->mode,
- mode_string[pi->mode],pi->delay);
-
-}
-
-static struct pi_protocol epat = {
- .owner = THIS_MODULE,
- .name = "epat",
- .max_mode = 6,
- .epp_first = 3,
- .default_delay = 1,
- .max_units = 1,
- .write_regr = epat_write_regr,
- .read_regr = epat_read_regr,
- .write_block = epat_write_block,
- .read_block = epat_read_block,
- .connect = epat_connect,
- .disconnect = epat_disconnect,
- .test_proto = epat_test_proto,
- .log_adapter = epat_log_adapter,
-};
-
-static int __init epat_init(void)
-{
-#ifdef CONFIG_PARIDE_EPATC8
- epatc8 = 1;
-#endif
- return paride_register(&epat);
-}
-
-static void __exit epat_exit(void)
-{
- paride_unregister(&epat);
-}
-
-MODULE_LICENSE("GPL");
-module_init(epat_init)
-module_exit(epat_exit)
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-17 12:57:54 +0300