diff options
Diffstat (limited to 'drivers/block/paride/comm.c')
| -rw-r--r-- | drivers/block/paride/comm.c | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/drivers/block/paride/comm.c b/drivers/block/paride/comm.c deleted file mode 100644 index 9bcd35495323..000000000000 --- a/drivers/block/paride/comm.c +++ /dev/null @@ -1,218 +0,0 @@ -/* - comm.c (c) 1997-8 Grant R. Guenther <grant@torque.net> - Under the terms of the GNU General Public License. - - comm.c is a low-level protocol driver for some older models - of the DataStor "Commuter" parallel to IDE adapter. Some of - the parallel port devices marketed by Arista currently - use this adapter. -*/ - -/* Changes: - - 1.01 GRG 1998.05.05 init_proto, release_proto - -*/ - -#define COMM_VERSION "1.01" - -#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, 8-bit writes - 1 8-bit reads and writes - 2 8-bit EPP mode -*/ - -#define j44(a,b) (((a>>3)&0x0f)|((b<<1)&0xf0)) - -#define P1 w2(5);w2(0xd);w2(0xd);w2(5);w2(4); -#define P2 w2(5);w2(7);w2(7);w2(5);w2(4); - -/* cont = 0 - access the IDE register file - cont = 1 - access the IDE command set -*/ - -static int cont_map[2] = { 0x08, 0x10 }; - -static int comm_read_regr( PIA *pi, int cont, int regr ) - -{ int l, h, r; - - r = regr + cont_map[cont]; - - switch (pi->mode) { - - case 0: w0(r); P1; w0(0); - w2(6); l = r1(); w0(0x80); h = r1(); w2(4); - return j44(l,h); - - case 1: w0(r+0x20); P1; - w0(0); w2(0x26); h = r0(); w2(4); - return h; - - case 2: - case 3: - case 4: w3(r+0x20); (void)r1(); - w2(0x24); h = r4(); w2(4); - return h; - - } - return -1; -} - -static void comm_write_regr( PIA *pi, int cont, int regr, int val ) - -{ int r; - - r = regr + cont_map[cont]; - - switch (pi->mode) { - - case 0: - case 1: w0(r); P1; w0(val); P2; - break; - - case 2: - case 3: - case 4: w3(r); (void)r1(); w4(val); - break; - } -} - -static void comm_connect ( PIA *pi ) - -{ pi->saved_r0 = r0(); - pi->saved_r2 = r2(); - w2(4); w0(0xff); w2(6); - w2(4); w0(0xaa); w2(6); - w2(4); w0(0x00); w2(6); - w2(4); w0(0x87); w2(6); - w2(4); w0(0xe0); w2(0xc); w2(0xc); w2(4); -} - -static void comm_disconnect ( PIA *pi ) - -{ w2(0); w2(0); w2(0); w2(4); - w0(pi->saved_r0); - w2(pi->saved_r2); -} - -static void comm_read_block( PIA *pi, char * buf, int count ) - -{ int i, l, h; - - switch (pi->mode) { - - case 0: w0(0x48); P1; - for(i=0;i<count;i++) { - w0(0); w2(6); l = r1(); - w0(0x80); h = r1(); w2(4); - buf[i] = j44(l,h); - } - break; - - case 1: w0(0x68); P1; w0(0); - for(i=0;i<count;i++) { - w2(0x26); buf[i] = r0(); w2(0x24); - } - w2(4); - break; - - case 2: w3(0x68); (void)r1(); w2(0x24); - for (i=0;i<count;i++) buf[i] = r4(); - w2(4); - break; - - case 3: w3(0x68); (void)r1(); w2(0x24); - for (i=0;i<count/2;i++) ((u16 *)buf)[i] = r4w(); - w2(4); - break; - - case 4: w3(0x68); (void)r1(); w2(0x24); - for (i=0;i<count/4;i++) ((u32 *)buf)[i] = r4l(); - w2(4); - break; - - } -} - -/* NB: Watch out for the byte swapped writes ! */ - -static void comm_write_block( PIA *pi, char * buf, int count ) - -{ int k; - - switch (pi->mode) { - - case 0: - case 1: w0(0x68); P1; - for (k=0;k<count;k++) { - w2(5); w0(buf[k^1]); w2(7); - } - w2(5); w2(4); - break; - - case 2: w3(0x48); (void)r1(); - for (k=0;k<count;k++) w4(buf[k^1]); - break; - - case 3: w3(0x48); (void)r1(); - for (k=0;k<count/2;k++) w4w(pi_swab16(buf,k)); - break; - - case 4: w3(0x48); (void)r1(); - for (k=0;k<count/4;k++) w4l(pi_swab32(buf,k)); - break; - - - } -} - -static void comm_log_adapter( PIA *pi, char * scratch, int verbose ) - -{ char *mode_string[5] = {"4-bit","8-bit","EPP-8","EPP-16","EPP-32"}; - - printk("%s: comm %s, DataStor Commuter at 0x%x, ", - pi->device,COMM_VERSION,pi->port); - printk("mode %d (%s), delay %d\n",pi->mode, - mode_string[pi->mode],pi->delay); - -} - -static struct pi_protocol comm = { - .owner = THIS_MODULE, - .name = "comm", - .max_mode = 5, - .epp_first = 2, - .default_delay = 1, - .max_units = 1, - .write_regr = comm_write_regr, - .read_regr = comm_read_regr, - .write_block = comm_write_block, - .read_block = comm_read_block, - .connect = comm_connect, - .disconnect = comm_disconnect, - .log_adapter = comm_log_adapter, -}; - -static int __init comm_init(void) -{ - return paride_register(&comm); -} - -static void __exit comm_exit(void) -{ - paride_unregister(&comm); -} - -MODULE_LICENSE("GPL"); -module_init(comm_init) -module_exit(comm_exit) |