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+/* $OpenBSD: smc93cx6var.h,v 1.11 2002/06/28 01:27:59 millert 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
+ * also be used for 93C26 and 93C06 serial EEPROMS.
+ *
+ * Copyright (c) 1994, 1995 Justin T. Gibbs.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * 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.
+ */
+#ifndef _SMC93CX6VAR_H_
+#define _SMC93CX6VAR_H_
+
+#include <sys/param.h>
+#if !(defined(__NetBSD__) || defined(__OpenBSD__))
+#include <sys/systm.h>
+#endif
+
+#ifdef _KERNEL
+
+typedef enum {
+ C46 = 6,
+ C56_66 = 8
+} seeprom_chip_t;
+
+struct seeprom_descriptor {
+ struct ahc_softc *sd_ahc;
+ 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;
+ u_int16_t sd_CK;
+ u_int16_t sd_DO;
+ u_int16_t sd_DI;
+};
+
+/*
+ * This function will read count 16-bit words from the serial EEPROM and
+ * return their value in buf. The port address of the aic7xxx serial EEPROM
+ * control register is passed in as offset. The following parameters are
+ * also passed in:
+ *
+ * CS - Chip select
+ * CK - Clock
+ * DO - Data out
+ * DI - Data in
+ * RDY - SEEPROM ready
+ * MS - Memory port mode select
+ *
+ * A failed read attempt returns 0, and a successful read returns 1.
+ */
+
+#define SEEPROM_INB(sd) \
+ ahc_inb(sd->sd_ahc, sd->sd_control_offset)
+#define SEEPROM_OUTB(sd, value) \
+do { \
+ ahc_outb(sd->sd_ahc, sd->sd_control_offset, value); \
+ ahc_flush_device_writes(sd->sd_ahc); \
+} while(0)
+
+#define SEEPROM_STATUS_INB(sd) \
+ ahc_inb(sd->sd_ahc, sd->sd_status_offset)
+#define SEEPROM_DATA_INB(sd) \
+ ahc_inb(sd->sd_ahc, sd->sd_dataout_offset)
+
+int read_seeprom(struct seeprom_descriptor *sd, u_int16_t *buf,
+ bus_size_t start_addr, bus_size_t count);
+int verify_cksum(struct seeprom_config *sc);
+
+#endif /* _KERNEL */
+#endif /* SMC93CX6VAR_H_ */