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211 lines
4.4 KiB
211 lines
4.4 KiB
/* |
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fit3.c (c) 1998 Grant R. Guenther <[email protected]> |
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Under the terms of the GNU General Public License. |
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fit3.c is a low-level protocol driver for newer models |
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of the Fidelity International Technology parallel port adapter. |
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This adapter is used in their TransDisk 3000 portable |
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hard-drives, as well as CD-ROM, PD-CD and other devices. |
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The TD-2000 and certain older devices use a different protocol. |
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Try the fit2 protocol module with them. |
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NB: The FIT adapters do not appear to support the control |
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registers. So, we map ALT_STATUS to STATUS and NO-OP writes |
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to the device control register - this means that IDE reset |
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will not work on these devices. |
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*/ |
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#define FIT3_VERSION "1.0" |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/delay.h> |
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#include <linux/kernel.h> |
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#include <linux/types.h> |
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#include <linux/wait.h> |
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#include <asm/io.h> |
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#include "paride.h" |
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#define j44(a,b) (((a>>3)&0x0f)|((b<<1)&0xf0)) |
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#define w7(byte) {out_p(7,byte);} |
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#define r7() (in_p(7) & 0xff) |
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/* cont = 0 - access the IDE register file |
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cont = 1 - access the IDE command set |
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*/ |
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static void fit3_write_regr( PIA *pi, int cont, int regr, int val) |
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{ if (cont == 1) return; |
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switch (pi->mode) { |
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case 0: |
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case 1: w2(0xc); w0(regr); w2(0x8); w2(0xc); |
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w0(val); w2(0xd); |
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w0(0); w2(0xc); |
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break; |
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case 2: w2(0xc); w0(regr); w2(0x8); w2(0xc); |
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w4(val); w4(0); |
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w2(0xc); |
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break; |
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} |
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} |
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static int fit3_read_regr( PIA *pi, int cont, int regr ) |
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{ int a, b; |
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if (cont) { |
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if (regr != 6) return 0xff; |
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regr = 7; |
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} |
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switch (pi->mode) { |
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case 0: w2(0xc); w0(regr + 0x10); w2(0x8); w2(0xc); |
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w2(0xd); a = r1(); |
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w2(0xf); b = r1(); |
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w2(0xc); |
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return j44(a,b); |
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case 1: w2(0xc); w0(regr + 0x90); w2(0x8); w2(0xc); |
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w2(0xec); w2(0xee); w2(0xef); a = r0(); |
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w2(0xc); |
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return a; |
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case 2: w2(0xc); w0(regr + 0x90); w2(0x8); w2(0xc); |
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w2(0xec); |
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a = r4(); b = r4(); |
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w2(0xc); |
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return a; |
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} |
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return -1; |
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} |
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static void fit3_read_block( PIA *pi, char * buf, int count ) |
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{ int k, a, b, c, d; |
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switch (pi->mode) { |
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case 0: w2(0xc); w0(0x10); w2(0x8); w2(0xc); |
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for (k=0;k<count/2;k++) { |
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w2(0xd); a = r1(); |
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w2(0xf); b = r1(); |
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w2(0xc); c = r1(); |
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w2(0xe); d = r1(); |
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buf[2*k ] = j44(a,b); |
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buf[2*k+1] = j44(c,d); |
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} |
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w2(0xc); |
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break; |
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case 1: w2(0xc); w0(0x90); w2(0x8); w2(0xc); |
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w2(0xec); w2(0xee); |
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for (k=0;k<count/2;k++) { |
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w2(0xef); a = r0(); |
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w2(0xee); b = r0(); |
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buf[2*k ] = a; |
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buf[2*k+1] = b; |
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} |
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w2(0xec); |
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w2(0xc); |
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break; |
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case 2: w2(0xc); w0(0x90); w2(0x8); w2(0xc); |
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w2(0xec); |
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for (k=0;k<count;k++) buf[k] = r4(); |
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w2(0xc); |
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break; |
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} |
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} |
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static void fit3_write_block( PIA *pi, char * buf, int count ) |
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{ int k; |
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switch (pi->mode) { |
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case 0: |
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case 1: w2(0xc); w0(0); w2(0x8); w2(0xc); |
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for (k=0;k<count/2;k++) { |
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w0(buf[2*k ]); w2(0xd); |
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w0(buf[2*k+1]); w2(0xc); |
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} |
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break; |
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case 2: w2(0xc); w0(0); w2(0x8); w2(0xc); |
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for (k=0;k<count;k++) w4(buf[k]); |
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w2(0xc); |
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break; |
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} |
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} |
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static void fit3_connect ( PIA *pi ) |
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{ pi->saved_r0 = r0(); |
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pi->saved_r2 = r2(); |
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w2(0xc); w0(0); w2(0xa); |
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if (pi->mode == 2) { |
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w2(0xc); w0(0x9); w2(0x8); w2(0xc); |
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} |
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} |
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static void fit3_disconnect ( PIA *pi ) |
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{ w2(0xc); w0(0xa); w2(0x8); w2(0xc); |
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w0(pi->saved_r0); |
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w2(pi->saved_r2); |
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} |
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static void fit3_log_adapter( PIA *pi, char * scratch, int verbose ) |
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{ char *mode_string[3] = {"4-bit","8-bit","EPP"}; |
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printk("%s: fit3 %s, FIT 3000 adapter at 0x%x, " |
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"mode %d (%s), delay %d\n", |
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pi->device,FIT3_VERSION,pi->port, |
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pi->mode,mode_string[pi->mode],pi->delay); |
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} |
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static struct pi_protocol fit3 = { |
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.owner = THIS_MODULE, |
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.name = "fit3", |
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.max_mode = 3, |
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.epp_first = 2, |
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.default_delay = 1, |
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.max_units = 1, |
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.write_regr = fit3_write_regr, |
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.read_regr = fit3_read_regr, |
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.write_block = fit3_write_block, |
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.read_block = fit3_read_block, |
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.connect = fit3_connect, |
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.disconnect = fit3_disconnect, |
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.log_adapter = fit3_log_adapter, |
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}; |
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static int __init fit3_init(void) |
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{ |
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return paride_register(&fit3); |
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} |
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static void __exit fit3_exit(void) |
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{ |
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paride_unregister(&fit3); |
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} |
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MODULE_LICENSE("GPL"); |
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module_init(fit3_init) |
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module_exit(fit3_exit)
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