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 0000000..d462ff6
--- /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)