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Diffstat (limited to 'drivers/block/paride/epia.c')
-rw-r--r--drivers/block/paride/epia.c316
1 files changed, 0 insertions, 316 deletions
diff --git a/drivers/block/paride/epia.c b/drivers/block/paride/epia.c
deleted file mode 100644
index fb0e782d055e..000000000000
--- a/drivers/block/paride/epia.c
+++ /dev/null
@@ -1,316 +0,0 @@
-/*
- epia.c (c) 1997-8 Grant R. Guenther <grant@torque.net>
- Under the terms of the GNU General Public License.
-
- epia.c is a low-level protocol driver for Shuttle Technologies
- EPIA parallel to IDE adapter chip. This device is now obsolete
- and has been replaced with the EPAT chip, which is supported
- by epat.c, however, some devices based on EPIA are still
- available.
-
-*/
-
-/* Changes:
-
- 1.01 GRG 1998.05.06 init_proto, release_proto
- 1.02 GRG 1998.06.17 support older versions of EPIA
-
-*/
-
-#define EPIA_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"
-
-/* mode codes: 0 nybble reads on port 1, 8-bit writes
- 1 5/3 reads on ports 1 & 2, 8-bit writes
- 2 8-bit reads and writes
- 3 8-bit EPP mode
- 4 16-bit EPP
- 5 32-bit EPP
-*/
-
-#define j44(a,b) (((a>>4)&0x0f)+(b&0xf0))
-#define j53(a,b) (((a>>3)&0x1f)+((b<<4)&0xe0))
-
-/* cont = 0 IDE register file
- cont = 1 IDE control registers
-*/
-
-static int cont_map[2] = { 0, 0x80 };
-
-static int epia_read_regr( PIA *pi, int cont, int regr )
-
-{ int a, b, r;
-
- regr += cont_map[cont];
-
- switch (pi->mode) {
-
- case 0: r = regr^0x39;
- w0(r); w2(1); w2(3); w0(r);
- a = r1(); w2(1); b = r1(); w2(4);
- return j44(a,b);
-
- case 1: r = regr^0x31;
- w0(r); w2(1); w0(r&0x37);
- w2(3); w2(5); w0(r|0xf0);
- a = r1(); b = r2(); w2(4);
- return j53(a,b);
-
- case 2: r = regr^0x29;
- w0(r); w2(1); w2(0X21); w2(0x23);
- a = r0(); w2(4);
- return a;
-
- case 3:
- case 4:
- case 5: w3(regr); w2(0x24); a = r4(); w2(4);
- return a;
-
- }
- return -1;
-}
-
-static void epia_write_regr( PIA *pi, int cont, int regr, int val)
-
-{ int r;
-
- regr += cont_map[cont];
-
- switch (pi->mode) {
-
- case 0:
- case 1:
- case 2: r = regr^0x19;
- w0(r); w2(1); w0(val); w2(3); w2(4);
- break;
-
- case 3:
- case 4:
- case 5: r = regr^0x40;
- w3(r); w4(val); w2(4);
- break;
- }
-}
-
-#define WR(r,v) epia_write_regr(pi,0,r,v)
-#define RR(r) (epia_read_regr(pi,0,r))
-
-/* The use of register 0x84 is entirely unclear - it seems to control
- some EPP counters ... currently we know about 3 different block
- sizes: the standard 512 byte reads and writes, 12 byte writes and
- 2048 byte reads (the last two being used in the CDrom drivers.
-*/
-
-static void epia_connect ( PIA *pi )
-
-{ pi->saved_r0 = r0();
- pi->saved_r2 = r2();
-
- w2(4); w0(0xa0); w0(0x50); w0(0xc0); w0(0x30); w0(0xa0); w0(0);
- w2(1); w2(4);
- if (pi->mode >= 3) {
- w0(0xa); w2(1); w2(4); w0(0x82); w2(4); w2(0xc); w2(4);
- w2(0x24); w2(0x26); w2(4);
- }
- WR(0x86,8);
-}
-
-static void epia_disconnect ( PIA *pi )
-
-{ /* WR(0x84,0x10); */
- w0(pi->saved_r0);
- w2(1); w2(4);
- w0(pi->saved_r0);
- w2(pi->saved_r2);
-}
-
-static void epia_read_block( PIA *pi, char * buf, int count )
-
-{ int k, ph, a, b;
-
- switch (pi->mode) {
-
- case 0: w0(0x81); w2(1); w2(3); w0(0xc1);
- ph = 1;
- for (k=0;k<count;k++) {
- w2(2+ph); a = r1();
- w2(4+ph); b = r1();
- buf[k] = j44(a,b);
- ph = 1 - ph;
- }
- w0(0); w2(4);
- break;
-
- case 1: w0(0x91); w2(1); w0(0x10); w2(3);
- w0(0x51); w2(5); w0(0xd1);
- ph = 1;
- for (k=0;k<count;k++) {
- w2(4+ph);
- a = r1(); b = r2();
- buf[k] = j53(a,b);
- ph = 1 - ph;
- }
- w0(0); w2(4);
- break;
-
- case 2: w0(0x89); w2(1); w2(0x23); w2(0x21);
- ph = 1;
- for (k=0;k<count;k++) {
- w2(0x24+ph);
- buf[k] = r0();
- ph = 1 - ph;
- }
- w2(6); w2(4);
- break;
-
- case 3: if (count > 512) WR(0x84,3);
- w3(0); w2(0x24);
- for (k=0;k<count;k++) buf[k] = r4();
- w2(4); WR(0x84,0);
- break;
-
- case 4: if (count > 512) WR(0x84,3);
- w3(0); w2(0x24);
- for (k=0;k<count/2;k++) ((u16 *)buf)[k] = r4w();
- w2(4); WR(0x84,0);
- break;
-
- case 5: if (count > 512) WR(0x84,3);
- w3(0); w2(0x24);
- for (k=0;k<count/4;k++) ((u32 *)buf)[k] = r4l();
- w2(4); WR(0x84,0);
- break;
-
- }
-}
-
-static void epia_write_block( PIA *pi, char * buf, int count )
-
-{ int ph, k, last, d;
-
- switch (pi->mode) {
-
- case 0:
- case 1:
- case 2: w0(0xa1); w2(1); w2(3); w2(1); w2(5);
- ph = 0; last = 0x8000;
- for (k=0;k<count;k++) {
- d = buf[k];
- if (d != last) { last = d; w0(d); }
- w2(4+ph);
- ph = 1 - ph;
- }
- w2(7); w2(4);
- break;
-
- case 3: if (count < 512) WR(0x84,1);
- w3(0x40);
- for (k=0;k<count;k++) w4(buf[k]);
- if (count < 512) WR(0x84,0);
- break;
-
- case 4: if (count < 512) WR(0x84,1);
- w3(0x40);
- for (k=0;k<count/2;k++) w4w(((u16 *)buf)[k]);
- if (count < 512) WR(0x84,0);
- break;
-
- case 5: if (count < 512) WR(0x84,1);
- w3(0x40);
- for (k=0;k<count/4;k++) w4l(((u32 *)buf)[k]);
- if (count < 512) WR(0x84,0);
- break;
-
- }
-
-}
-
-static int epia_test_proto( PIA *pi, char * scratch, int verbose )
-
-{ int j, k, f;
- int e[2] = {0,0};
-
- epia_connect(pi);
- for (j=0;j<2;j++) {
- WR(6,0xa0+j*0x10);
- for (k=0;k<256;k++) {
- WR(2,k^0xaa);
- WR(3,k^0x55);
- if (RR(2) != (k^0xaa)) e[j]++;
- }
- WR(2,1); WR(3,1);
- }
- epia_disconnect(pi);
-
- f = 0;
- epia_connect(pi);
- WR(0x84,8);
- epia_read_block(pi,scratch,512);
- for (k=0;k<256;k++) {
- if ((scratch[2*k] & 0xff) != ((k+1) & 0xff)) f++;
- if ((scratch[2*k+1] & 0xff) != ((-2-k) & 0xff)) f++;
- }
- WR(0x84,0);
- epia_disconnect(pi);
-
- if (verbose) {
- printk("%s: epia: port 0x%x, mode %d, test=(%d,%d,%d)\n",
- pi->device,pi->port,pi->mode,e[0],e[1],f);
- }
-
- return (e[0] && e[1]) || f;
-
-}
-
-
-static void epia_log_adapter( PIA *pi, char * scratch, int verbose )
-
-{ char *mode_string[6] = {"4-bit","5/3","8-bit",
- "EPP-8","EPP-16","EPP-32"};
-
- printk("%s: epia %s, Shuttle EPIA at 0x%x, ",
- pi->device,EPIA_VERSION,pi->port);
- printk("mode %d (%s), delay %d\n",pi->mode,
- mode_string[pi->mode],pi->delay);
-
-}
-
-static struct pi_protocol epia = {
- .owner = THIS_MODULE,
- .name = "epia",
- .max_mode = 6,
- .epp_first = 3,
- .default_delay = 1,
- .max_units = 1,
- .write_regr = epia_write_regr,
- .read_regr = epia_read_regr,
- .write_block = epia_write_block,
- .read_block = epia_read_block,
- .connect = epia_connect,
- .disconnect = epia_disconnect,
- .test_proto = epia_test_proto,
- .log_adapter = epia_log_adapter,
-};
-
-static int __init epia_init(void)
-{
- return paride_register(&epia);
-}
-
-static void __exit epia_exit(void)
-{
- paride_unregister(&epia);
-}
-
-MODULE_LICENSE("GPL");
-module_init(epia_init)
-module_exit(epia_exit)
generated by cgit (git 2.34.1) at 2024-07-03 17:36:05 +0000