diff options
Diffstat (limited to 'drivers/block/paride/epat.c')
-rw-r--r-- | drivers/block/paride/epat.c | 340 |
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) |