Add support for 93C66 and 93C56 SEEPROM chips.

Adapted from FreeBSD code.

3 files changed, 89 insertions, 70 deletions

diff --git a/sys/dev/ic/smc93cx6.c b/sys/dev/ic/smc93cx6.c
index 704310b0adf..f8aa62d3b34 100644
--- a/sys/dev/ic/smc93cx6.c
+++ b/sys/dev/ic/smc93cx6.c
@@ -1,10 +1,9 @@
-/*	$OpenBSD: smc93cx6.c,v 1.6 1996/11/28 23:27:53 niklas Exp $	*/
-/*	$NetBSD: smc93cx6.c,v 1.5 1996/10/21 22:34:38 thorpej Exp $	*/
-
+/*	$OpenBSD: smc93cx6.c,v 1.7 2000/01/31 01:50:54 weingart Exp $	*/
+/* $FreeBSD: sys/dev/aic7xxx/93cx6.c,v 1.5 2000/01/07 23:08:17 gibbs Exp $ */
 /*
- * Interface for the 93C46/26/06 serial eeprom parts.
+ * Interface for the 93C66/56/46/26/06 serial eeprom parts.
  *
- * Copyright (c) 1995 Daniel M. Eischen
+ * Copyright (c) 1995, 1996 Daniel M. Eischen
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -23,10 +22,10 @@
  */
 
 /*
- *   The instruction set of the 93C46/26/06 chips are as follows:
+ *   The instruction set of the 93C66/56/46/26/06 chips are as follows:
  *
- *               Start  OP
- *     Function   Bit  Code  Address    Data     Description
+ *               Start  OP	    *
+ *     Function   Bit  Code  Address**  Data     Description
  *     -------------------------------------------------------------------
  *     READ        1    10   A5 - A0             Reads data stored in memory,
  *                                               starting at specified address
@@ -39,12 +38,14 @@
  *     EWDS        1    00   00XXXX              Disables all programming
  *                                               instructions
  *     *Note: A value of X for address is a don't care condition.
+ *    **Note: There are 8 address bits for the 93C56/66 chips unlike
+ *	      the 93C46/26/06 chips which have 6 address bits.
  *
  *   The 93C46 has a four wire interface: clock, chip select, data in, and
  *   data out.  In order to perform one of the above functions, you need
  *   to enable the chip select for a clock period (typically a minimum of
  *   1 usec, with the clock high and low a minimum of 750 and 250 nsec
- *   respectively.  While the chip select remains high, you can clock in
+ *   respectively).  While the chip select remains high, you can clock in
  *   the instructions (above) starting with the start bit, followed by the
  *   OP code, Address, and Data (if needed).  For the READ instruction, the
  *   requested 16-bit register contents is read from the data out line but
@@ -56,11 +57,14 @@
 
 #include <sys/param.h>
 #include <sys/systm.h>
-#if defined(__FreeBSD__)
-#include <machine/clock.h>
-#include <i386/scsi/93cx6.h>
-#elif defined(__NetBSD__) || defined(__OpenBSD__)
+#if !(defined(__NetBSD__) || defined(__OpenBSD__))
+#include <machine/bus_memio.h>
+#include <machine/bus_pio.h>
+#endif
 #include <machine/bus.h>
+#if !(defined(__NetBSD__) || defined(__OpenBSD__))
+#include <dev/aic7xxx/93cx6.h>
+#else
 #include <dev/ic/smc93cx6var.h>
 #endif
 
@@ -76,10 +80,11 @@ static struct seeprom_cmd {
 /*
  * Wait for the SEERDY to go high; about 800 ns.
  */
-#define CLOCK_PULSE(sd, rdy)			\
-	while ((SEEPROM_INB(sd) & rdy) == 0) {		\
-		;  /* Do nothing */		\
-	}
+#define CLOCK_PULSE(sd, rdy)				\
+	while ((SEEPROM_STATUS_INB(sd) & rdy) == 0) {	\
+		;  /* Do nothing */			\
+	}						\
+	(void)SEEPROM_INB(sd);	/* Clear clock */
 
 /*
  * Read the serial EEPROM and returns 1 if successful and 0 if
@@ -89,15 +94,11 @@ int
 read_seeprom(sd, buf, start_addr, count)
 	struct seeprom_descriptor *sd;
 	u_int16_t *buf;
-#if defined(__FreeBSD__)
-	u_int start_addr;
-	int count;
-#elif defined(__NetBSD__) || defined(__OpenBSD__)
 	bus_size_t start_addr;
 	bus_size_t count;
-#endif
 {
-	int i = 0, k = 0;
+	int i = 0;
+	u_int k = 0;
 	u_int16_t v;
 	u_int8_t temp;
 
@@ -125,8 +126,8 @@ read_seeprom(sd, buf, start_addr, count)
 			if (seeprom_read.bits[i] != 0)
 				temp ^= sd->sd_DO;
 		}
-		/* Send the 6 bit address (MSB first, LSB last). */
-		for (i = 5; i >= 0; i--) {
+		/* Send the 6 or 8 bit address (MSB first, LSB last). */
+		for (i = (sd->sd_chip - 1); i >= 0; i--) {
 			if ((k & (1 << i)) != 0)
 				temp ^= sd->sd_DO;
 			SEEPROM_OUTB(sd, temp);
@@ -148,7 +149,7 @@ read_seeprom(sd, buf, start_addr, count)
 			SEEPROM_OUTB(sd, temp);
 			CLOCK_PULSE(sd, sd->sd_RDY);
 			v <<= 1;
-			if (SEEPROM_INB(sd) & sd->sd_DI)
+			if (SEEPROM_DATA_INB(sd) & sd->sd_DI)
 				v |= 1;
 			SEEPROM_OUTB(sd, temp ^ sd->sd_CK);
 			CLOCK_PULSE(sd, sd->sd_RDY);
@@ -165,12 +166,11 @@ read_seeprom(sd, buf, start_addr, count)
 		SEEPROM_OUTB(sd, temp);
 		CLOCK_PULSE(sd, sd->sd_RDY);
 	}
-#if 0
-	printf ("Serial EEPROM:");
+#ifdef AHC_DUMP_EEPROM
+	printf("\nSerial EEPROM:\n\t");
 	for (k = 0; k < count; k = k + 1) {
-		if (((k % 8) == 0) && (k != 0))
-		{
-			printf ("\n              ");
+		if (((k % 8) == 0) && (k != 0)) {
+			printf ("\n\t");
 		}
 		printf (" 0x%x", buf[k]);
 	}
diff --git a/sys/dev/ic/smc93cx6var.h b/sys/dev/ic/smc93cx6var.h
index 644fd75ee1b..0ef1610f229 100644
--- a/sys/dev/ic/smc93cx6var.h
+++ b/sys/dev/ic/smc93cx6var.h
@@ -1,6 +1,5 @@
-/*	$OpenBSD: smc93cx6var.h,v 1.5 1996/11/28 23:27:53 niklas Exp $	*/
-/*	$NetBSD: smc93cx6var.h,v 1.3 1996/10/21 22:34:41 thorpej Exp $	*/
-
+/*	$OpenBSD: smc93cx6var.h,v 1.6 2000/01/31 01:50:54 weingart Exp $	*/
+/* $FreeBSD: sys/dev/aic7xxx/93cx6.h,v 1.3 1999/12/29 04:35:33 peter Exp $ */
 /*
  * Interface to the 93C46 serial EEPROM that is used to store BIOS
  * settings for the aic7xxx based adaptec SCSI controllers.  It can
@@ -13,15 +12,29 @@
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
- *    notice immediately at the beginning of the file, without modification,
- *    this list of conditions, and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Absolutely no warranty of function or purpose is made by the author
- *    Justin T. Gibbs.
- * 4. Modifications may be freely made to this file if the above conditions
- *    are met.
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification, immediately at the beginning of the file.
+ * 2. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * Where this Software is combined with software released under the terms of 
+ * the GNU Public License ("GPL") and the terms of the GPL would require the 
+ * combined work to also be released under the terms of the GPL, the terms
+ * and conditions of this License will apply in addition to those of the
+ * GPL with the exception of any terms or conditions of this License that
+ * conflict with, or are expressly prohibited by, the GPL.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
  */
 
 #include <sys/param.h>
@@ -29,14 +42,20 @@
 #include <sys/systm.h>
 #endif
 
+#ifdef _KERNEL
+
+typedef enum {
+	C46 = 6,
+	C56_66 = 8
+} seeprom_chip_t;
+
 struct seeprom_descriptor {
-#if defined(__FreeBSD__)
-	u_long sd_iobase;
-#elif defined(__NetBSD__) || defined(__OpenBSD__)
-	bus_space_tag_t sd_iot;
-	bus_space_handle_t sd_ioh;
-	bus_size_t sd_offset;
-#endif
+	bus_space_tag_t sd_tag;             
+	bus_space_handle_t sd_bsh;
+	bus_size_t sd_control_offset;
+	bus_size_t sd_status_offset;
+	bus_size_t sd_dataout_offset;
+	seeprom_chip_t sd_chip;
 	u_int16_t sd_MS;
 	u_int16_t sd_RDY;
 	u_int16_t sd_CS;
@@ -61,20 +80,16 @@ struct seeprom_descriptor {
  *  A failed read attempt returns 0, and a successful read returns 1.
  */
 
-#if defined(__FreeBSD__)
-#define	SEEPROM_INB(sd)		inb(sd->sd_iobase)
-#define	SEEPROM_OUTB(sd, value)	outb(sd->sd_iobase, value)
-#elif defined(__NetBSD__) || defined(__OpenBSD__)
 #define	SEEPROM_INB(sd) \
-	bus_space_read_1(sd->sd_iot, sd->sd_ioh, sd->sd_offset)
+	bus_space_read_1(sd->sd_tag, sd->sd_bsh, sd->sd_control_offset)
 #define	SEEPROM_OUTB(sd, value) \
-	bus_space_write_1(sd->sd_iot, sd->sd_ioh, sd->sd_offset, value)
-#endif
+	bus_space_write_1(sd->sd_tag, sd->sd_bsh, sd->sd_control_offset, value)
+#define	SEEPROM_STATUS_INB(sd) \
+	bus_space_read_1(sd->sd_tag, sd->sd_bsh, sd->sd_status_offset)
+#define	SEEPROM_DATA_INB(sd) \
+	bus_space_read_1(sd->sd_tag, sd->sd_bsh, sd->sd_dataout_offset)
 
-#if defined(__FreeBSD__)
-int read_seeprom __P((struct seeprom_descriptor *sd,
-    u_int16_t *buf, u_int start_addr, int count));
-#elif defined(__NetBSD__) || defined(__OpenBSD__)
-int read_seeprom __P((struct seeprom_descriptor *sd,
-    u_int16_t *buf, bus_size_t start_addr, bus_size_t count));
-#endif
+int read_seeprom(struct seeprom_descriptor *sd, u_int16_t *buf,
+		 bus_size_t start_addr, bus_size_t count);
+
+#endif /* _KERNEL */
diff --git a/sys/dev/pci/ahc_pci.c b/sys/dev/pci/ahc_pci.c
index 0d6a9998e53..a4f9091a754 100644
--- a/sys/dev/pci/ahc_pci.c
+++ b/sys/dev/pci/ahc_pci.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ahc_pci.c,v 1.11 1999/09/22 21:57:08 deraadt Exp $	*/
+/*	$OpenBSD: ahc_pci.c,v 1.12 2000/01/31 01:50:55 weingart Exp $	*/
 /*	$NetBSD: ahc_pci.c,v 1.9 1996/10/21 22:56:24 thorpej Exp $	*/
 
 /*
@@ -626,10 +626,14 @@ load_seeprom(ahc)
 #if defined(__FreeBSD__)
 	sd.sd_iobase = ahc->baseport + SEECTL;
 #elif defined(__NetBSD__) || defined(__OpenBSD__)
-	sd.sd_iot = ahc->sc_iot;
-	sd.sd_ioh = ahc->sc_ioh;
-	sd.sd_offset = SEECTL;
+	sd.sd_tag = ahc->sc_iot;
+	sd.sd_bsh = ahc->sc_ioh;
+	sd.sd_control_offset = SEECTL;
+	sd.sd_status_offset = SEECTL;
+	sd.sd_dataout_offset = SEECTL;
 #endif
+	sd.sd_chip = C46;	/* XXX - backwards compat */
+
 	sd.sd_MS = SEEMS;
 	sd.sd_RDY = SEERDY;
 	sd.sd_CS = SEECS;
@@ -724,10 +728,10 @@ acquire_seeprom(sd)
 	 */
 	SEEPROM_OUTB(sd, sd->sd_MS);
 	wait = 1000;  /* 1 second timeout in msec */
-	while (--wait && ((SEEPROM_INB(sd) & sd->sd_RDY) == 0)) {
+	while (--wait && ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0)) {
 		DELAY (1000);  /* delay 1 msec */
         }
-	if ((SEEPROM_INB(sd) & sd->sd_RDY) == 0) {
+	if ((SEEPROM_STATUS_INB(sd) & sd->sd_RDY) == 0) {
 		SEEPROM_OUTB(sd, 0); 
 		return (0);
 	}