patch-2.4.3 linux/drivers/scsi/aic7xxx/aic7770.c

• Lines: 347
• Date: Sun Mar 4 14:30:18 2001
• Orig file: v2.4.2/linux/drivers/scsi/aic7xxx/aic7770.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.2/linux/drivers/scsi/aic7xxx/aic7770.c linux/drivers/scsi/aic7xxx/aic7770.c
@@ -0,0 +1,346 @@
+/*
+ * Product specific probe and attach routines for:
+ * 	27/284X and aic7770 motherboard SCSI controllers
+ *
+ * Copyright (c) 1994-1998, 2000, 2001 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 immediately at the beginning of the file, without modification,
+ *    this list of conditions, and the following disclaimer.
+ * 2. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU Public License ("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.
+ *
+ * $Id: //depot/src/aic7xxx/aic7770.c#6 $
+ *
+ * $FreeBSD: src/sys/dev/aic7xxx/aic7770.c,v 1.1 2000/09/16 20:02:27 gibbs Exp $
+ */
+
+#include "aic7xxx_osm.h"
+#include "aic7xxx_inline.h"
+#include "aic7xxx_93cx6.h"
+
+#define ID_AIC7770	0x04907770
+#define ID_AHA_274x	0x04907771
+#define ID_AHA_284xB	0x04907756 /* BIOS enabled */
+#define ID_AHA_284x	0x04907757 /* BIOS disabled*/
+
+static void aha2840_load_seeprom(struct ahc_softc *ahc);
+static ahc_device_setup_t ahc_aic7770_VL_setup;
+static ahc_device_setup_t ahc_aic7770_EISA_setup;;
+static ahc_device_setup_t ahc_aic7770_setup;
+
+
+struct aic7770_identity aic7770_ident_table [] =
+{
+	{
+		ID_AHA_274x,
+		0xFFFFFFFF,
+		"Adaptec 274X SCSI adapter",
+		ahc_aic7770_EISA_setup
+	},
+	{
+		ID_AHA_284xB,
+		0xFFFFFFFE,
+		"Adaptec 284X SCSI adapter",
+		ahc_aic7770_VL_setup
+	},
+	/* Generic chip probes for devices we don't know 'exactly' */
+	{
+		ID_AIC7770,
+		0xFFFFFFFF,
+		"Adaptec aic7770 SCSI adapter",
+		ahc_aic7770_EISA_setup
+	}
+};
+const int ahc_num_aic7770_devs = NUM_ELEMENTS(aic7770_ident_table);
+
+struct aic7770_identity *
+aic7770_find_device(uint32_t id)
+{
+	struct	aic7770_identity *entry;
+	int	i;
+
+	for (i = 0; i < ahc_num_aic7770_devs; i++) {
+		entry = &aic7770_ident_table[i];
+		if (entry->full_id == (id & entry->id_mask))
+			return (entry);
+	}
+	return (NULL);
+}
+
+int
+aic7770_config(struct ahc_softc *ahc, struct aic7770_identity *entry)
+{
+	struct	ahc_probe_config probe_config;
+	int	error;
+	u_int	hostconf;
+	u_int   irq;
+	u_int	intdef;
+	u_int	hcntrl;
+	int	shared;
+
+	ahc_init_probe_config(&probe_config);
+	error = entry->setup(ahc->dev_softc, &probe_config);
+	if (error != 0)
+		return (error);
+
+	error = aic7770_map_registers(ahc);
+	if (error != 0)
+		return (error);
+
+	/* Pause the card preseving the IRQ type */
+	hcntrl = ahc_inb(ahc, HCNTRL) & IRQMS;
+	ahc_outb(ahc, HCNTRL, hcntrl | PAUSE);
+	while ((ahc_inb(ahc, HCNTRL) & PAUSE) == 0)
+		;
+
+	/* Make sure we have a valid interrupt vector */
+	intdef = ahc_inb(ahc, INTDEF);
+	shared = (intdef & EDGE_TRIG) ? 0 : 1;
+	irq = intdef & VECTOR;
+	switch (irq) {
+	case 9:
+	case 10:
+	case 11:
+	case 12:
+	case 14:
+	case 15:
+		break;
+	default:
+		printf("aic7770_config: illegal irq setting %d\n", intdef);
+		return (ENXIO);
+	}
+
+	probe_config.description = entry->name;
+	error = ahc_softc_init(ahc, &probe_config);
+
+	error = aic7770_map_int(ahc, irq, shared);
+	if (error != 0)
+		return (error);
+
+	error = ahc_reset(ahc);
+	if (error != 0)
+		return (error);
+
+	switch (probe_config.chip & (AHC_EISA|AHC_VL)) {
+	case AHC_EISA:
+	{
+		u_int biosctrl;
+		u_int scsiconf;
+		u_int scsiconf1;
+
+		biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
+		scsiconf = ahc_inb(ahc, SCSICONF);
+		scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
+
+		/* Get the primary channel information */
+		if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
+			ahc->flags |= AHC_CHANNEL_B_PRIMARY;
+
+		if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
+			ahc->flags |= AHC_USEDEFAULTS;
+		} else {
+			if ((ahc->features & AHC_WIDE) != 0) {
+				ahc->our_id = scsiconf1 & HWSCSIID;
+				if (scsiconf & TERM_ENB)
+					ahc->flags |= AHC_TERM_ENB_A;
+			} else {
+				ahc->our_id = scsiconf & HSCSIID;
+				ahc->our_id_b = scsiconf1 & HSCSIID;
+				if (scsiconf & TERM_ENB)
+					ahc->flags |= AHC_TERM_ENB_A;
+				if (scsiconf1 & TERM_ENB)
+					ahc->flags |= AHC_TERM_ENB_B;
+			}
+		}
+		/*
+		 * We have no way to tell, so assume extended
+		 * translation is enabled.
+		 */
+		ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
+		break;
+	}
+	case AHC_VL:
+	{
+		aha2840_load_seeprom(ahc);
+		break;
+	}
+	default:
+		break;
+	}
+
+	/*
+	 * Ensure autoflush is enabled
+	 */
+	ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
+
+	/* Setup the FIFO threshold and the bus off time */
+	hostconf = ahc_inb(ahc, HOSTCONF);
+	ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
+	ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
+
+	/*
+	 * Generic aic7xxx initialization.
+	 */
+	error = ahc_init(ahc);
+	if (error != 0)
+		return (error);
+
+	/*
+	 * Link this softc in with all other ahc instances.
+	 */
+	ahc_softc_insert(ahc);
+
+	/*
+	 * Enable the board's BUS drivers
+	 */
+	ahc_outb(ahc, BCTL, ENABLE);
+
+	return (0);
+}
+
+/*
+ * Read the 284x SEEPROM.
+ */
+static void
+aha2840_load_seeprom(struct ahc_softc *ahc)
+{
+	struct	  seeprom_descriptor sd;
+	struct	  seeprom_config sc;
+	uint16_t  checksum = 0;
+	uint8_t   scsi_conf;
+	int	  have_seeprom;
+
+	sd.sd_ahc = ahc;
+	sd.sd_control_offset = SEECTL_2840;
+	sd.sd_status_offset = STATUS_2840;
+	sd.sd_dataout_offset = STATUS_2840;		
+	sd.sd_chip = C46;
+	sd.sd_MS = 0;
+	sd.sd_RDY = EEPROM_TF;
+	sd.sd_CS = CS_2840;
+	sd.sd_CK = CK_2840;
+	sd.sd_DO = DO_2840;
+	sd.sd_DI = DI_2840;
+
+	if (bootverbose)
+		printf("%s: Reading SEEPROM...", ahc_name(ahc));
+	have_seeprom = read_seeprom(&sd,
+				    (uint16_t *)&sc,
+				    /*start_addr*/0,
+				    sizeof(sc)/2);
+
+	if (have_seeprom) {
+		/* Check checksum */
+		int i;
+		int maxaddr = (sizeof(sc)/2) - 1;
+		uint16_t *scarray = (uint16_t *)&sc;
+
+		for (i = 0; i < maxaddr; i++)
+			checksum = checksum + scarray[i];
+		if (checksum != sc.checksum) {
+			if(bootverbose)
+				printf ("checksum error\n");
+			have_seeprom = 0;
+		} else if (bootverbose) {
+			printf("done.\n");
+		}
+	}
+
+	if (!have_seeprom) {
+		if (bootverbose)
+			printf("%s: No SEEPROM available\n", ahc_name(ahc));
+		ahc->flags |= AHC_USEDEFAULTS;
+	} else {
+		/*
+		 * Put the data we've collected down into SRAM
+		 * where ahc_init will find it.
+		 */
+		int i;
+		int max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8;
+		uint16_t discenable;
+
+		discenable = 0;
+		for (i = 0; i < max_targ; i++){
+	                uint8_t target_settings;
+			target_settings = (sc.device_flags[i] & CFXFER) << 4;
+			if (sc.device_flags[i] & CFSYNCH)
+				target_settings |= SOFS;
+			if (sc.device_flags[i] & CFWIDEB)
+				target_settings |= WIDEXFER;
+			if (sc.device_flags[i] & CFDISC)
+				discenable |= (0x01 << i);
+			ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
+		}
+		ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
+		ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
+
+		ahc->our_id = sc.brtime_id & CFSCSIID;
+
+		scsi_conf = (ahc->our_id & 0x7);
+		if (sc.adapter_control & CFSPARITY)
+			scsi_conf |= ENSPCHK;
+		if (sc.adapter_control & CFRESETB)
+			scsi_conf |= RESET_SCSI;
+
+		if (sc.bios_control & CF284XEXTEND)		
+			ahc->flags |= AHC_EXTENDED_TRANS_A;
+		/* Set SCSICONF info */
+		ahc_outb(ahc, SCSICONF, scsi_conf);
+
+		if (sc.adapter_control & CF284XSTERM)
+			ahc->flags |= AHC_TERM_ENB_A;
+	}
+}
+
+static int
+ahc_aic7770_VL_setup(ahc_dev_softc_t dev, struct ahc_probe_config *probe_config)
+{
+	int error;
+
+	error = ahc_aic7770_setup(dev, probe_config);
+	probe_config->chip |= AHC_VL;
+	return (error);
+}
+
+static int
+ahc_aic7770_EISA_setup(ahc_dev_softc_t dev,
+		       struct ahc_probe_config *probe_config)
+{
+	int error;
+
+	error = ahc_aic7770_setup(dev, probe_config);
+	probe_config->chip |= AHC_EISA;
+	return (error);
+}
+
+static int
+ahc_aic7770_setup(ahc_dev_softc_t dev, struct ahc_probe_config *probe_config)
+{
+	probe_config->channel = 'A';
+	probe_config->channel_b = 'B';
+	probe_config->chip = AHC_AIC7770;
+	probe_config->features = AHC_AIC7770_FE;
+	probe_config->bugs |= AHC_TMODE_WIDEODD_BUG;
+	probe_config->flags |= AHC_PAGESCBS;
+	return (0);
+}