From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/block/paride/dstr.c | 233 +++++++++++++++++++++++++++++++++++++ 1 file changed, 233 insertions(+) create mode 100644 kernel/drivers/block/paride/dstr.c (limited to 'kernel/drivers/block/paride/dstr.c') diff --git a/kernel/drivers/block/paride/dstr.c b/kernel/drivers/block/paride/dstr.c new file mode 100644 index 000000000..accc5c777 --- /dev/null +++ b/kernel/drivers/block/paride/dstr.c @@ -0,0 +1,233 @@ +/* + dstr.c (c) 1997-8 Grant R. Guenther + Under the terms of the GNU General Public License. + + dstr.c is a low-level protocol driver for the + DataStor EP2000 parallel to IDE adapter chip. + +*/ + +/* Changes: + + 1.01 GRG 1998.05.06 init_proto, release_proto + +*/ + +#define DSTR_VERSION "1.01" + +#include +#include +#include +#include +#include +#include +#include + +#include "paride.h" + +/* mode codes: 0 nybble reads, 8-bit writes + 1 8-bit reads and writes + 2 8-bit EPP mode + 3 EPP-16 + 4 EPP-32 +*/ + +#define j44(a,b) (((a>>3)&0x07)|((~a>>4)&0x08)|((b<<1)&0x70)|((~b)&0x80)) + +#define P1 w2(5);w2(0xd);w2(5);w2(4); +#define P2 w2(5);w2(7);w2(5);w2(4); +#define P3 w2(6);w2(4);w2(6);w2(4); + +/* cont = 0 - access the IDE register file + cont = 1 - access the IDE command set +*/ + +static int cont_map[2] = { 0x20, 0x40 }; + +static int dstr_read_regr( PIA *pi, int cont, int regr ) + +{ int a, b, r; + + r = regr + cont_map[cont]; + + w0(0x81); P1; + if (pi->mode) { w0(0x11); } else { w0(1); } + P2; w0(r); P1; + + switch (pi->mode) { + + case 0: w2(6); a = r1(); w2(4); w2(6); b = r1(); w2(4); + return j44(a,b); + + case 1: w0(0); w2(0x26); a = r0(); w2(4); + return a; + + case 2: + case 3: + case 4: w2(0x24); a = r4(); w2(4); + return a; + + } + return -1; +} + +static void dstr_write_regr( PIA *pi, int cont, int regr, int val ) + +{ int r; + + r = regr + cont_map[cont]; + + w0(0x81); P1; + if (pi->mode >= 2) { w0(0x11); } else { w0(1); } + P2; w0(r); P1; + + switch (pi->mode) { + + case 0: + case 1: w0(val); w2(5); w2(7); w2(5); w2(4); + break; + + case 2: + case 3: + case 4: w4(val); + break; + } +} + +#define CCP(x) w0(0xff);w2(0xc);w2(4);\ + w0(0xaa);w0(0x55);w0(0);w0(0xff);w0(0x87);w0(0x78);\ + w0(x);w2(5);w2(4); + +static void dstr_connect ( PIA *pi ) + +{ pi->saved_r0 = r0(); + pi->saved_r2 = r2(); + w2(4); CCP(0xe0); w0(0xff); +} + +static void dstr_disconnect ( PIA *pi ) + +{ CCP(0x30); + w0(pi->saved_r0); + w2(pi->saved_r2); +} + +static void dstr_read_block( PIA *pi, char * buf, int count ) + +{ int k, a, b; + + w0(0x81); P1; + if (pi->mode) { w0(0x19); } else { w0(9); } + P2; w0(0x82); P1; P3; w0(0x20); P1; + + switch (pi->mode) { + + case 0: for (k=0;kmode) { w0(0x19); } else { w0(9); } + P2; w0(0x82); P1; P3; w0(0x20); P1; + + switch (pi->mode) { + + case 0: + case 1: for (k=0;kdevice,DSTR_VERSION,pi->port); + printk("mode %d (%s), delay %d\n",pi->mode, + mode_string[pi->mode],pi->delay); + +} + +static struct pi_protocol dstr = { + .owner = THIS_MODULE, + .name = "dstr", + .max_mode = 5, + .epp_first = 2, + .default_delay = 1, + .max_units = 1, + .write_regr = dstr_write_regr, + .read_regr = dstr_read_regr, + .write_block = dstr_write_block, + .read_block = dstr_read_block, + .connect = dstr_connect, + .disconnect = dstr_disconnect, + .log_adapter = dstr_log_adapter, +}; + +static int __init dstr_init(void) +{ + return paride_register(&dstr); +} + +static void __exit dstr_exit(void) +{ + paride_unregister(&dstr); +} + +MODULE_LICENSE("GPL"); +module_init(dstr_init) +module_exit(dstr_exit) -- cgit 1.2.3-korg