diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/block/paride/ktti.c | |
download | op-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip op-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/block/paride/ktti.c')
-rw-r--r-- | drivers/block/paride/ktti.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/drivers/block/paride/ktti.c b/drivers/block/paride/ktti.c new file mode 100644 index 0000000..6c7edbf --- /dev/null +++ b/drivers/block/paride/ktti.c @@ -0,0 +1,128 @@ +/* + ktti.c (c) 1998 Grant R. Guenther <grant@torque.net> + Under the terms of the GNU General Public License. + + ktti.c is a low-level protocol driver for the KT Technology + parallel port adapter. This adapter is used in the "PHd" + portable hard-drives. As far as I can tell, this device + supports 4-bit mode _only_. + +*/ + +#define KTTI_VERSION "1.0" + +#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)) + +/* cont = 0 - access the IDE register file + cont = 1 - access the IDE command set +*/ + +static int cont_map[2] = { 0x10, 0x08 }; + +static void ktti_write_regr( PIA *pi, int cont, int regr, int val) + +{ int r; + + r = regr + cont_map[cont]; + + w0(r); w2(0xb); w2(0xa); w2(3); w2(6); + w0(val); w2(3); w0(0); w2(6); w2(0xb); +} + +static int ktti_read_regr( PIA *pi, int cont, int regr ) + +{ int a, b, r; + + r = regr + cont_map[cont]; + + w0(r); w2(0xb); w2(0xa); w2(9); w2(0xc); w2(9); + a = r1(); w2(0xc); b = r1(); w2(9); w2(0xc); w2(9); + return j44(a,b); + +} + +static void ktti_read_block( PIA *pi, char * buf, int count ) + +{ int k, a, b; + + for (k=0;k<count/2;k++) { + w0(0x10); w2(0xb); w2(0xa); w2(9); w2(0xc); w2(9); + a = r1(); w2(0xc); b = r1(); w2(9); + buf[2*k] = j44(a,b); + a = r1(); w2(0xc); b = r1(); w2(9); + buf[2*k+1] = j44(a,b); + } +} + +static void ktti_write_block( PIA *pi, char * buf, int count ) + +{ int k; + + for (k=0;k<count/2;k++) { + w0(0x10); w2(0xb); w2(0xa); w2(3); w2(6); + w0(buf[2*k]); w2(3); + w0(buf[2*k+1]); w2(6); + w2(0xb); + } +} + +static void ktti_connect ( PIA *pi ) + +{ pi->saved_r0 = r0(); + pi->saved_r2 = r2(); + w2(0xb); w2(0xa); w0(0); w2(3); w2(6); +} + +static void ktti_disconnect ( PIA *pi ) + +{ w2(0xb); w2(0xa); w0(0xa0); w2(3); w2(4); + w0(pi->saved_r0); + w2(pi->saved_r2); +} + +static void ktti_log_adapter( PIA *pi, char * scratch, int verbose ) + +{ printk("%s: ktti %s, KT adapter at 0x%x, delay %d\n", + pi->device,KTTI_VERSION,pi->port,pi->delay); + +} + +static struct pi_protocol ktti = { + .owner = THIS_MODULE, + .name = "ktti", + .max_mode = 1, + .epp_first = 2, + .default_delay = 1, + .max_units = 1, + .write_regr = ktti_write_regr, + .read_regr = ktti_read_regr, + .write_block = ktti_write_block, + .read_block = ktti_read_block, + .connect = ktti_connect, + .disconnect = ktti_disconnect, + .log_adapter = ktti_log_adapter, +}; + +static int __init ktti_init(void) +{ + return pi_register(&ktti)-1; +} + +static void __exit ktti_exit(void) +{ + pi_unregister(&ktti); +} + +MODULE_LICENSE("GPL"); +module_init(ktti_init) +module_exit(ktti_exit) |