diff options
Diffstat (limited to 'drivers/block/paride/frpw.c')
-rw-r--r-- | drivers/block/paride/frpw.c | 313 |
1 files changed, 0 insertions, 313 deletions
diff --git a/drivers/block/paride/frpw.c b/drivers/block/paride/frpw.c deleted file mode 100644 index c3cde364603a..000000000000 --- a/drivers/block/paride/frpw.c +++ /dev/null @@ -1,313 +0,0 @@ -/* - frpw.c (c) 1996-8 Grant R. Guenther <grant@torque.net> - Under the terms of the GNU General Public License - - frpw.c is a low-level protocol driver for the Freecom "Power" - parallel port IDE adapter. - - Some applications of this adapter may require a "printer" reset - prior to loading the driver. This can be done by loading and - unloading the "lp" driver, or it can be done by this driver - if you define FRPW_HARD_RESET. The latter is not recommended - as it may upset devices on other ports. - -*/ - -/* Changes: - - 1.01 GRG 1998.05.06 init_proto, release_proto - fix chip detect - added EPP-16 and EPP-32 - 1.02 GRG 1998.09.23 added hard reset to initialisation process - 1.03 GRG 1998.12.14 made hard reset conditional - -*/ - -#define FRPW_VERSION "1.03" - -#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 cec4 w2(0xc);w2(0xe);w2(0xe);w2(0xc);w2(4);w2(4);w2(4); -#define j44(l,h) (((l>>4)&0x0f)|(h&0xf0)) - -/* cont = 0 - access the IDE register file - cont = 1 - access the IDE command set -*/ - -static int cont_map[2] = { 0x08, 0x10 }; - -static int frpw_read_regr( PIA *pi, int cont, int regr ) - -{ int h,l,r; - - r = regr + cont_map[cont]; - - w2(4); - w0(r); cec4; - w2(6); l = r1(); - w2(4); h = r1(); - w2(4); - - return j44(l,h); - -} - -static void frpw_write_regr( PIA *pi, int cont, int regr, int val) - -{ int r; - - r = regr + cont_map[cont]; - - w2(4); w0(r); cec4; - w0(val); - w2(5);w2(7);w2(5);w2(4); -} - -static void frpw_read_block_int( PIA *pi, char * buf, int count, int regr ) - -{ int h, l, k, ph; - - switch(pi->mode) { - - case 0: w2(4); w0(regr); cec4; - for (k=0;k<count;k++) { - w2(6); l = r1(); - w2(4); h = r1(); - buf[k] = j44(l,h); - } - w2(4); - break; - - case 1: ph = 2; - w2(4); w0(regr + 0xc0); cec4; - w0(0xff); - for (k=0;k<count;k++) { - w2(0xa4 + ph); - buf[k] = r0(); - ph = 2 - ph; - } - w2(0xac); w2(0xa4); w2(4); - break; - - case 2: w2(4); w0(regr + 0x80); cec4; - for (k=0;k<count;k++) buf[k] = r4(); - w2(0xac); w2(0xa4); - w2(4); - break; - - case 3: w2(4); w0(regr + 0x80); cec4; - for (k=0;k<count-2;k++) buf[k] = r4(); - w2(0xac); w2(0xa4); - buf[count-2] = r4(); - buf[count-1] = r4(); - w2(4); - break; - - case 4: w2(4); w0(regr + 0x80); cec4; - for (k=0;k<(count/2)-1;k++) ((u16 *)buf)[k] = r4w(); - w2(0xac); w2(0xa4); - buf[count-2] = r4(); - buf[count-1] = r4(); - w2(4); - break; - - case 5: w2(4); w0(regr + 0x80); cec4; - for (k=0;k<(count/4)-1;k++) ((u32 *)buf)[k] = r4l(); - buf[count-4] = r4(); - buf[count-3] = r4(); - w2(0xac); w2(0xa4); - buf[count-2] = r4(); - buf[count-1] = r4(); - w2(4); - break; - - } -} - -static void frpw_read_block( PIA *pi, char * buf, int count) - -{ frpw_read_block_int(pi,buf,count,0x08); -} - -static void frpw_write_block( PIA *pi, char * buf, int count ) - -{ int k; - - switch(pi->mode) { - - case 0: - case 1: - case 2: w2(4); w0(8); cec4; w2(5); - for (k=0;k<count;k++) { - w0(buf[k]); - w2(7);w2(5); - } - w2(4); - break; - - case 3: w2(4); w0(0xc8); cec4; w2(5); - for (k=0;k<count;k++) w4(buf[k]); - w2(4); - break; - - case 4: w2(4); w0(0xc8); cec4; w2(5); - for (k=0;k<count/2;k++) w4w(((u16 *)buf)[k]); - w2(4); - break; - - case 5: w2(4); w0(0xc8); cec4; w2(5); - for (k=0;k<count/4;k++) w4l(((u32 *)buf)[k]); - w2(4); - break; - } -} - -static void frpw_connect ( PIA *pi ) - -{ pi->saved_r0 = r0(); - pi->saved_r2 = r2(); - w2(4); -} - -static void frpw_disconnect ( PIA *pi ) - -{ w2(4); w0(0x20); cec4; - w0(pi->saved_r0); - w2(pi->saved_r2); -} - -/* Stub logic to see if PNP string is available - used to distinguish - between the Xilinx and ASIC implementations of the Freecom adapter. -*/ - -static int frpw_test_pnp ( PIA *pi ) - -/* returns chip_type: 0 = Xilinx, 1 = ASIC */ - -{ int olddelay, a, b; - -#ifdef FRPW_HARD_RESET - w0(0); w2(8); udelay(50); w2(0xc); /* parallel bus reset */ - mdelay(1500); -#endif - - olddelay = pi->delay; - pi->delay = 10; - - pi->saved_r0 = r0(); - pi->saved_r2 = r2(); - - w2(4); w0(4); w2(6); w2(7); - a = r1() & 0xff; w2(4); b = r1() & 0xff; - w2(0xc); w2(0xe); w2(4); - - pi->delay = olddelay; - w0(pi->saved_r0); - w2(pi->saved_r2); - - return ((~a&0x40) && (b&0x40)); -} - -/* We use the pi->private to remember the result of the PNP test. - To make this work, private = port*2 + chip. Yes, I know it's - a hack :-( -*/ - -static int frpw_test_proto( PIA *pi, char * scratch, int verbose ) - -{ int j, k, r; - int e[2] = {0,0}; - - if ((pi->private>>1) != pi->port) - pi->private = frpw_test_pnp(pi) + 2*pi->port; - - if (((pi->private%2) == 0) && (pi->mode > 2)) { - if (verbose) - printk("%s: frpw: Xilinx does not support mode %d\n", - pi->device, pi->mode); - return 1; - } - - if (((pi->private%2) == 1) && (pi->mode == 2)) { - if (verbose) - printk("%s: frpw: ASIC does not support mode 2\n", - pi->device); - return 1; - } - - frpw_connect(pi); - for (j=0;j<2;j++) { - frpw_write_regr(pi,0,6,0xa0+j*0x10); - for (k=0;k<256;k++) { - frpw_write_regr(pi,0,2,k^0xaa); - frpw_write_regr(pi,0,3,k^0x55); - if (frpw_read_regr(pi,0,2) != (k^0xaa)) e[j]++; - } - } - frpw_disconnect(pi); - - frpw_connect(pi); - frpw_read_block_int(pi,scratch,512,0x10); - r = 0; - for (k=0;k<128;k++) if (scratch[k] != k) r++; - frpw_disconnect(pi); - - if (verbose) { - printk("%s: frpw: port 0x%x, chip %ld, mode %d, test=(%d,%d,%d)\n", - pi->device,pi->port,(pi->private%2),pi->mode,e[0],e[1],r); - } - - return (r || (e[0] && e[1])); -} - - -static void frpw_log_adapter( PIA *pi, char * scratch, int verbose ) - -{ char *mode_string[6] = {"4-bit","8-bit","EPP", - "EPP-8","EPP-16","EPP-32"}; - - printk("%s: frpw %s, Freecom (%s) adapter at 0x%x, ", pi->device, - FRPW_VERSION,((pi->private%2) == 0)?"Xilinx":"ASIC",pi->port); - printk("mode %d (%s), delay %d\n",pi->mode, - mode_string[pi->mode],pi->delay); - -} - -static struct pi_protocol frpw = { - .owner = THIS_MODULE, - .name = "frpw", - .max_mode = 6, - .epp_first = 2, - .default_delay = 2, - .max_units = 1, - .write_regr = frpw_write_regr, - .read_regr = frpw_read_regr, - .write_block = frpw_write_block, - .read_block = frpw_read_block, - .connect = frpw_connect, - .disconnect = frpw_disconnect, - .test_proto = frpw_test_proto, - .log_adapter = frpw_log_adapter, -}; - -static int __init frpw_init(void) -{ - return paride_register(&frpw); -} - -static void __exit frpw_exit(void) -{ - paride_unregister(&frpw); -} - -MODULE_LICENSE("GPL"); -module_init(frpw_init) -module_exit(frpw_exit) |