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!

1 files changed, 477 insertions, 0 deletions

diff --git a/drivers/block/paride/bpck.c b/drivers/block/paride/bpck.c
new file mode 100644
index 000000000000..d462ff6b139d
--- /dev/null
+++ b/drivers/block/paride/bpck.c
@@ -0,0 +1,477 @@
+/* 
+        bpck.c  (c) 1996-8  Grant R. Guenther <grant@torque.net>
+                            Under the terms of the GNU General Public License.
+
+        bpck.c is a low-level protocol driver for the MicroSolutions 
+        "backpack" parallel port IDE adapter.  
+
+*/
+
+/* Changes:
+
+        1.01    GRG 1998.05.05 init_proto, release_proto, pi->delay 
+        1.02    GRG 1998.08.15 default pi->delay returned to 4
+
+*/
+
+#define BPCK_VERSION    "1.02" 
+
+#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"
+
+#undef r2
+#undef w2
+
+#define PC                      pi->private
+#define r2()                    (PC=(in_p(2) & 0xff))
+#define w2(byte)                {out_p(2,byte); PC = byte;}
+#define t2(pat)                 {PC ^= pat; out_p(2,PC);}
+#define e2()                    {PC &= 0xfe; out_p(2,PC);}
+#define o2()                    {PC |= 1; out_p(2,PC);}
+
+#define j44(l,h)     (((l>>3)&0x7)|((l>>4)&0x8)|((h<<1)&0x70)|(h&0x80))
+
+/* cont = 0 - access the IDE register file 
+   cont = 1 - access the IDE command set 
+   cont = 2 - use internal bpck register addressing
+*/
+
+static int  cont_map[3] = { 0x40, 0x48, 0 };
+
+static int bpck_read_regr( PIA *pi, int cont, int regr )
+
+{       int r, l, h;
+
+        r = regr + cont_map[cont];
+
+        switch (pi->mode) {
+
+        case 0: w0(r & 0xf); w0(r); t2(2); t2(4);
+                l = r1();
+                t2(4);
+                h = r1();
+                return j44(l,h);
+
+        case 1: w0(r & 0xf); w0(r); t2(2);
+                e2(); t2(0x20);
+                t2(4); h = r0();
+                t2(1); t2(0x20);
+                return h;
+
+        case 2:
+        case 3:
+        case 4: w0(r); w2(9); w2(0); w2(0x20);
+                h = r4();
+                w2(0);
+                return h;
+
+        }
+        return -1;
+}       
+
+static void bpck_write_regr( PIA *pi, int cont, int regr, int val )
+
+{       int     r;
+
+        r = regr + cont_map[cont];
+
+        switch (pi->mode) {
+
+        case 0:
+        case 1: w0(r);
+                t2(2);
+                w0(val);
+                o2(); t2(4); t2(1);
+                break;
+
+        case 2:
+        case 3:
+        case 4: w0(r); w2(9); w2(0);
+                w0(val); w2(1); w2(3); w2(0);
+                break;
+
+        }
+}
+
+/* These macros access the bpck registers in native addressing */
+
+#define WR(r,v)         bpck_write_regr(pi,2,r,v)
+#define RR(r)           (bpck_read_regr(pi,2,r))
+
+static void bpck_write_block( PIA *pi, char * buf, int count )
+
+{       int i;
+
+        switch (pi->mode) {
+
+        case 0: WR(4,0x40);
+                w0(0x40); t2(2); t2(1);
+                for (i=0;i<count;i++) { w0(buf[i]); t2(4); }
+                WR(4,0);
+                break;
+
+        case 1: WR(4,0x50);
+                w0(0x40); t2(2); t2(1);
+                for (i=0;i<count;i++) { w0(buf[i]); t2(4); }
+                WR(4,0x10);
+                break;
+
+        case 2: WR(4,0x48);
+                w0(0x40); w2(9); w2(0); w2(1);
+                for (i=0;i<count;i++) w4(buf[i]);
+                w2(0);
+                WR(4,8);
+                break;
+
+        case 3: WR(4,0x48);
+                w0(0x40); w2(9); w2(0); w2(1);
+                for (i=0;i<count/2;i++) w4w(((u16 *)buf)[i]);
+                w2(0);
+                WR(4,8);
+                break;
+ 
+        case 4: WR(4,0x48);
+                w0(0x40); w2(9); w2(0); w2(1);
+                for (i=0;i<count/4;i++) w4l(((u32 *)buf)[i]);
+                w2(0);
+                WR(4,8);
+                break;
+        }
+}
+
+static void bpck_read_block( PIA *pi, char * buf, int count )
+
+{       int i, l, h;
+
+        switch (pi->mode) {
+
+        case 0: WR(4,0x40);
+                w0(0x40); t2(2);
+                for (i=0;i<count;i++) {
+                    t2(4); l = r1();
+                    t2(4); h = r1();
+                    buf[i] = j44(l,h);
+                }
+                WR(4,0);
+                break;
+
+        case 1: WR(4,0x50);
+                w0(0x40); t2(2); t2(0x20);
+                for(i=0;i<count;i++) { t2(4); buf[i] = r0(); }
+                t2(1); t2(0x20);
+                WR(4,0x10);
+                break;
+
+        case 2: WR(4,0x48);
+                w0(0x40); w2(9); w2(0); w2(0x20);
+                for (i=0;i<count;i++) buf[i] = r4();
+                w2(0);
+                WR(4,8);
+                break;
+
+        case 3: WR(4,0x48);
+                w0(0x40); w2(9); w2(0); w2(0x20);
+                for (i=0;i<count/2;i++) ((u16 *)buf)[i] = r4w();
+                w2(0);
+                WR(4,8);
+                break;
+
+        case 4: WR(4,0x48);
+                w0(0x40); w2(9); w2(0); w2(0x20);
+                for (i=0;i<count/4;i++) ((u32 *)buf)[i] = r4l();
+                w2(0);
+                WR(4,8);
+                break;
+
+        }
+}
+
+static int bpck_probe_unit ( PIA *pi )
+
+{       int o1, o0, f7, id;
+        int t, s;
+
+        id = pi->unit;
+        s = 0;
+        w2(4); w2(0xe); r2(); t2(2); 
+        o1 = r1()&0xf8;
+        o0 = r0();
+        w0(255-id); w2(4); w0(id);
+        t2(8); t2(8); t2(8);
+        t2(2); t = r1()&0xf8;
+        f7 = ((id % 8) == 7);
+        if ((f7) || (t != o1)) { t2(2); s = r1()&0xf8; }
+        if ((t == o1) && ((!f7) || (s == o1)))  {
+                w2(0x4c); w0(o0);
+                return 0;       
+        }
+        t2(8); w0(0); t2(2); w2(0x4c); w0(o0);
+        return 1;
+}
+        
+static void bpck_connect ( PIA *pi  )
+
+{       pi->saved_r0 = r0();
+        w0(0xff-pi->unit); w2(4); w0(pi->unit);
+        t2(8); t2(8); t2(8); 
+        t2(2); t2(2);
+        
+        switch (pi->mode) {
+
+        case 0: t2(8); WR(4,0);
+                break;
+
+        case 1: t2(8); WR(4,0x10);
+                break;
+
+        case 2:
+        case 3:
+        case 4: w2(0); WR(4,8);
+                break;
+
+        }
+
+        WR(5,8);
+
+        if (pi->devtype == PI_PCD) {
+                WR(0x46,0x10);          /* fiddle with ESS logic ??? */
+                WR(0x4c,0x38);
+                WR(0x4d,0x88);
+                WR(0x46,0xa0);
+                WR(0x41,0);
+                WR(0x4e,8);
+                }
+}
+
+static void bpck_disconnect ( PIA *pi )
+
+{       w0(0); 
+        if (pi->mode >= 2) { w2(9); w2(0); } else t2(2);
+        w2(0x4c); w0(pi->saved_r0);
+} 
+
+static void bpck_force_spp ( PIA *pi )
+
+/* This fakes the EPP protocol to turn off EPP ... */
+
+{       pi->saved_r0 = r0();
+        w0(0xff-pi->unit); w2(4); w0(pi->unit);
+        t2(8); t2(8); t2(8); 
+        t2(2); t2(2);
+
+        w2(0); 
+        w0(4); w2(9); w2(0); 
+        w0(0); w2(1); w2(3); w2(0);     
+        w0(0); w2(9); w2(0);
+        w2(0x4c); w0(pi->saved_r0);
+}
+
+#define TEST_LEN  16
+
+static int bpck_test_proto( PIA *pi, char * scratch, int verbose )
+
+{       int i, e, l, h, om;
+        char buf[TEST_LEN];
+
+        bpck_force_spp(pi);
+
+        switch (pi->mode) {
+
+        case 0: bpck_connect(pi);
+                WR(0x13,0x7f);
+                w0(0x13); t2(2);
+                for(i=0;i<TEST_LEN;i++) {
+                    t2(4); l = r1();
+                    t2(4); h = r1();
+                    buf[i] = j44(l,h);
+                }
+                bpck_disconnect(pi);
+                break;
+
+        case 1: bpck_connect(pi);
+                WR(0x13,0x7f);
+                w0(0x13); t2(2); t2(0x20);
+                for(i=0;i<TEST_LEN;i++) { t2(4); buf[i] = r0(); }
+                t2(1); t2(0x20);
+                bpck_disconnect(pi);
+                break;
+
+        case 2:
+        case 3:
+        case 4: om = pi->mode;
+                pi->mode = 0;
+                bpck_connect(pi);
+                WR(7,3);
+                WR(4,8);
+                bpck_disconnect(pi);
+
+                pi->mode = om;
+                bpck_connect(pi);
+                w0(0x13); w2(9); w2(1); w0(0); w2(3); w2(0); w2(0xe0);
+
+                switch (pi->mode) {
+                  case 2: for (i=0;i<TEST_LEN;i++) buf[i] = r4();
+                          break;
+                  case 3: for (i=0;i<TEST_LEN/2;i++) ((u16 *)buf)[i] = r4w();
+                          break;
+                  case 4: for (i=0;i<TEST_LEN/4;i++) ((u32 *)buf)[i] = r4l();
+                          break;
+                }
+
+                w2(0);
+                WR(7,0);
+                bpck_disconnect(pi);
+
+                break;
+
+        }
+
+        if (verbose) {
+            printk("%s: bpck: 0x%x unit %d mode %d: ",
+                   pi->device,pi->port,pi->unit,pi->mode);
+            for (i=0;i<TEST_LEN;i++) printk("%3d",buf[i]);
+            printk("\n");
+        }
+
+        e = 0;
+        for (i=0;i<TEST_LEN;i++) if (buf[i] != (i+1)) e++;
+        return e;
+}
+
+static void bpck_read_eeprom ( PIA *pi, char * buf )
+
+{       int i,j,k,n,p,v,f, om, od;
+
+        bpck_force_spp(pi);
+
+        om = pi->mode;  od = pi->delay;
+        pi->mode = 0; pi->delay = 6;
+
+        bpck_connect(pi);
+        
+        n = 0;
+        WR(4,0);
+        for (i=0;i<64;i++) {
+            WR(6,8);  
+            WR(6,0xc);
+            p = 0x100;
+            for (k=0;k<9;k++) {
+                f = (((i + 0x180) & p) != 0) * 2;
+                WR(6,f+0xc); 
+                WR(6,f+0xd); 
+                WR(6,f+0xc);
+                p = (p >> 1);
+            }
+            for (j=0;j<2;j++) {
+                v = 0;
+                for (k=0;k<8;k++) {
+                    WR(6,0xc); 
+                    WR(6,0xd); 
+                    WR(6,0xc); 
+                    f = RR(0);
+                    v = 2*v + (f == 0x84);
+                }
+                buf[2*i+1-j] = v;
+            }
+        }
+        WR(6,8);
+        WR(6,0);
+        WR(5,8);
+
+        bpck_disconnect(pi);
+
+        if (om >= 2) {
+                bpck_connect(pi);
+                WR(7,3);
+                WR(4,8);
+                bpck_disconnect(pi);
+        }
+
+        pi->mode = om; pi->delay = od;
+}
+
+static int bpck_test_port ( PIA *pi )   /* check for 8-bit port */
+
+{       int     i, r, m;
+
+        w2(0x2c); i = r0(); w0(255-i); r = r0(); w0(i);
+        m = -1;
+        if (r == i) m = 2;
+        if (r == (255-i)) m = 0;
+
+        w2(0xc); i = r0(); w0(255-i); r = r0(); w0(i);
+        if (r != (255-i)) m = -1;
+        
+        if (m == 0) { w2(6); w2(0xc); r = r0(); w0(0xaa); w0(r); w0(0xaa); }
+        if (m == 2) { w2(0x26); w2(0xc); }
+
+        if (m == -1) return 0;
+        return 5;
+}
+
+static void bpck_log_adapter( PIA *pi, char * scratch, int verbose )
+
+{       char    *mode_string[5] = { "4-bit","8-bit","EPP-8",
+                                    "EPP-16","EPP-32" };
+
+#ifdef DUMP_EEPROM
+        int i;
+#endif
+
+        bpck_read_eeprom(pi,scratch);
+
+#ifdef DUMP_EEPROM
+        if (verbose) {
+           for(i=0;i<128;i++)
+                if ((scratch[i] < ' ') || (scratch[i] > '~'))
+                    scratch[i] = '.';
+           printk("%s: bpck EEPROM: %64.64s\n",pi->device,scratch);
+           printk("%s:              %64.64s\n",pi->device,&scratch[64]);
+        }
+#endif
+
+        printk("%s: bpck %s, backpack %8.8s unit %d",
+                pi->device,BPCK_VERSION,&scratch[110],pi->unit);
+        printk(" at 0x%x, mode %d (%s), delay %d\n",pi->port,
+                pi->mode,mode_string[pi->mode],pi->delay);
+}
+
+static struct pi_protocol bpck = {
+        .owner          = THIS_MODULE,
+        .name           = "bpck",
+        .max_mode       = 5,
+        .epp_first      = 2,
+        .default_delay  = 4,
+        .max_units      = 255,
+        .write_regr     = bpck_write_regr,
+        .read_regr      = bpck_read_regr,
+        .write_block    = bpck_write_block,
+        .read_block     = bpck_read_block,
+        .connect        = bpck_connect,
+        .disconnect     = bpck_disconnect,
+        .test_port      = bpck_test_port,
+        .probe_unit     = bpck_probe_unit,
+        .test_proto     = bpck_test_proto,
+        .log_adapter    = bpck_log_adapter,
+};
+
+static int __init bpck_init(void)
+{
+        return pi_register(&bpck)-1;
+}
+
+static void __exit bpck_exit(void)
+{
+        pi_unregister(&bpck);
+}
+
+MODULE_LICENSE("GPL");
+module_init(bpck_init)
+module_exit(bpck_exit)