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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/block/paride/kbic.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/kbic.c')
-rw-r--r-- | drivers/block/paride/kbic.c | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/drivers/block/paride/kbic.c b/drivers/block/paride/kbic.c new file mode 100644 index 0000000..d983bce --- /dev/null +++ b/drivers/block/paride/kbic.c @@ -0,0 +1,297 @@ +/* + kbic.c (c) 1997-8 Grant R. Guenther <grant@torque.net> + Under the terms of the GNU General Public License. + + This is a low-level driver for the KBIC-951A and KBIC-971A + parallel to IDE adapter chips from KingByte Information Systems. + + The chips are almost identical, however, the wakeup code + required for the 971A interferes with the correct operation of + the 951A, so this driver registers itself twice, once for + each chip. + +*/ + +/* Changes: + + 1.01 GRG 1998.05.06 init_proto, release_proto + +*/ + +#define KBIC_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" + +#define r12w() (delay_p,inw(pi->port+1)&0xffff) + +#define j44(a,b) ((((a>>4)&0x0f)|(b&0xf0))^0x88) +#define j53(w) (((w>>3)&0x1f)|((w>>4)&0xe0)) + + +/* cont = 0 - access the IDE register file + cont = 1 - access the IDE command set +*/ + +static int cont_map[2] = { 0x80, 0x40 }; + +static int kbic_read_regr( PIA *pi, int cont, int regr ) + +{ int a, b, s; + + s = cont_map[cont]; + + switch (pi->mode) { + + case 0: w0(regr|0x18|s); w2(4); w2(6); w2(4); w2(1); w0(8); + a = r1(); w0(0x28); b = r1(); w2(4); + return j44(a,b); + + case 1: w0(regr|0x38|s); w2(4); w2(6); w2(4); w2(5); w0(8); + a = r12w(); w2(4); + return j53(a); + + case 2: w0(regr|0x08|s); w2(4); w2(6); w2(4); w2(0xa5); w2(0xa1); + a = r0(); w2(4); + return a; + + case 3: + case 4: + case 5: w0(0x20|s); w2(4); w2(6); w2(4); w3(regr); + a = r4(); b = r4(); w2(4); w2(0); w2(4); + return a; + + } + return -1; +} + +static void kbic_write_regr( PIA *pi, int cont, int regr, int val) + +{ int s; + + s = cont_map[cont]; + + switch (pi->mode) { + + case 0: + case 1: + case 2: w0(regr|0x10|s); w2(4); w2(6); w2(4); + w0(val); w2(5); w2(4); + break; + + case 3: + case 4: + case 5: w0(0x20|s); w2(4); w2(6); w2(4); w3(regr); + w4(val); w4(val); + w2(4); w2(0); w2(4); + break; + + } +} + +static void k951_connect ( PIA *pi ) + +{ pi->saved_r0 = r0(); + pi->saved_r2 = r2(); + w2(4); +} + +static void k951_disconnect ( PIA *pi ) + +{ w0(pi->saved_r0); + w2(pi->saved_r2); +} + +#define CCP(x) w2(0xc4);w0(0xaa);w0(0x55);w0(0);w0(0xff);w0(0x87);\ + w0(0x78);w0(x);w2(0xc5);w2(0xc4);w0(0xff); + +static void k971_connect ( PIA *pi ) + +{ pi->saved_r0 = r0(); + pi->saved_r2 = r2(); + CCP(0x20); + w2(4); +} + +static void k971_disconnect ( PIA *pi ) + +{ CCP(0x30); + w0(pi->saved_r0); + w2(pi->saved_r2); +} + +/* counts must be congruent to 0 MOD 4, but all known applications + have this property. +*/ + +static void kbic_read_block( PIA *pi, char * buf, int count ) + +{ int k, a, b; + + switch (pi->mode) { + + case 0: w0(0x98); w2(4); w2(6); w2(4); + for (k=0;k<count/2;k++) { + w2(1); w0(8); a = r1(); + w0(0x28); b = r1(); + buf[2*k] = j44(a,b); + w2(5); b = r1(); + w0(8); a = r1(); + buf[2*k+1] = j44(a,b); + w2(4); + } + break; + + case 1: w0(0xb8); w2(4); w2(6); w2(4); + for (k=0;k<count/4;k++) { + w0(0xb8); + w2(4); w2(5); + w0(8); buf[4*k] = j53(r12w()); + w0(0xb8); buf[4*k+1] = j53(r12w()); + w2(4); w2(5); + buf[4*k+3] = j53(r12w()); + w0(8); buf[4*k+2] = j53(r12w()); + } + w2(4); + break; + + case 2: w0(0x88); w2(4); w2(6); w2(4); + for (k=0;k<count/2;k++) { + w2(0xa0); w2(0xa1); buf[2*k] = r0(); + w2(0xa5); buf[2*k+1] = r0(); + } + w2(4); + break; + + case 3: w0(0xa0); w2(4); w2(6); w2(4); w3(0); + for (k=0;k<count;k++) buf[k] = r4(); + w2(4); w2(0); w2(4); + break; + + case 4: w0(0xa0); w2(4); w2(6); w2(4); w3(0); + for (k=0;k<count/2;k++) ((u16 *)buf)[k] = r4w(); + w2(4); w2(0); w2(4); + break; + + case 5: w0(0xa0); w2(4); w2(6); w2(4); w3(0); + for (k=0;k<count/4;k++) ((u32 *)buf)[k] = r4l(); + w2(4); w2(0); w2(4); + break; + + + } +} + +static void kbic_write_block( PIA *pi, char * buf, int count ) + +{ int k; + + switch (pi->mode) { + + case 0: + case 1: + case 2: w0(0x90); w2(4); w2(6); w2(4); + for(k=0;k<count/2;k++) { + w0(buf[2*k+1]); w2(0); w2(4); + w0(buf[2*k]); w2(5); w2(4); + } + break; + + case 3: w0(0xa0); w2(4); w2(6); w2(4); w3(0); + for(k=0;k<count/2;k++) { + w4(buf[2*k+1]); + w4(buf[2*k]); + } + w2(4); w2(0); w2(4); + break; + + case 4: w0(0xa0); w2(4); w2(6); w2(4); w3(0); + for(k=0;k<count/2;k++) w4w(pi_swab16(buf,k)); + w2(4); w2(0); w2(4); + break; + + case 5: w0(0xa0); w2(4); w2(6); w2(4); w3(0); + for(k=0;k<count/4;k++) w4l(pi_swab32(buf,k)); + w2(4); w2(0); w2(4); + break; + + } + +} + +static void kbic_log_adapter( PIA *pi, char * scratch, + int verbose, char * chip ) + +{ char *mode_string[6] = {"4-bit","5/3","8-bit", + "EPP-8","EPP_16","EPP-32"}; + + printk("%s: kbic %s, KingByte %s at 0x%x, ", + pi->device,KBIC_VERSION,chip,pi->port); + printk("mode %d (%s), delay %d\n",pi->mode, + mode_string[pi->mode],pi->delay); + +} + +static void k951_log_adapter( PIA *pi, char * scratch, int verbose ) + +{ kbic_log_adapter(pi,scratch,verbose,"KBIC-951A"); +} + +static void k971_log_adapter( PIA *pi, char * scratch, int verbose ) + +{ kbic_log_adapter(pi,scratch,verbose,"KBIC-971A"); +} + +static struct pi_protocol k951 = { + .owner = THIS_MODULE, + .name = "k951", + .max_mode = 6, + .epp_first = 3, + .default_delay = 1, + .max_units = 1, + .write_regr = kbic_write_regr, + .read_regr = kbic_read_regr, + .write_block = kbic_write_block, + .read_block = kbic_read_block, + .connect = k951_connect, + .disconnect = k951_disconnect, + .log_adapter = k951_log_adapter, +}; + +static struct pi_protocol k971 = { + .owner = THIS_MODULE, + .name = "k971", + .max_mode = 6, + .epp_first = 3, + .default_delay = 1, + .max_units = 1, + .write_regr = kbic_write_regr, + .read_regr = kbic_read_regr, + .write_block = kbic_write_block, + .read_block = kbic_read_block, + .connect = k971_connect, + .disconnect = k971_disconnect, + .log_adapter = k971_log_adapter, +}; + +static int __init kbic_init(void) +{ + return (pi_register(&k951)||pi_register(&k971))-1; +} + +static void __exit kbic_exit(void) +{ + pi_unregister(&k951); + pi_unregister(&k971); +} + +MODULE_LICENSE("GPL"); +module_init(kbic_init) +module_exit(kbic_exit) |