ahc_pci.c

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/*
 * Product specific probe and attach routines for:
 *      3940, 2940, aic7895, aic7890, aic7880,
 *	aic7870, aic7860 and aic7850 SCSI controllers
 *
 * Copyright (c) 1995, 1996, 1997, 1998 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.
 *
 *	$Id: ahc_pci.c,v 1.5.2.5 1999/05/17 21:58:40 gibbs Exp $
 */

#include <pci.h>
#if NPCI > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>

#include <pci/pcireg.h>
#include <pci/pcivar.h>

#include <machine/bus_memio.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <machine/clock.h>

#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt_sim.h>

#include <cam/scsi/scsi_all.h>

#include <dev/aic7xxx/aic7xxx.h>
#include <dev/aic7xxx/93cx6.h>

#include <aic7xxx_reg.h>

#define AHC_PCI_IOADDR	PCIR_MAPS		/* I/O Address */
#define AHC_PCI_MEMADDR	(PCIR_MAPS + 4)	/* Mem I/O Address */

static __inline u_int64_t
ahc_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
{
	u_int64_t id;

	id = subvendor
	   | (subdevice << 16)
	   | ((u_int64_t)vendor << 32)
	   | ((u_int64_t)device << 48);

	return (id);
}

#define ID_ALL_MASK		0xFFFFFFFFFFFFFFFFull
#define ID_DEV_VENDOR_MASK	0xFFFFFFFF00000000ull
#define ID_AIC7850		0x5078900400000000ull
#define ID_AHA_2910_15_20_30C	0x5078900478509004ull
#define ID_AIC7855		0x5578900400000000ull
#define ID_AIC7860		0x6078900400000000ull
#define ID_AIC7860C		0x6078900478609004ull
#define ID_AHA_2940AU_0		0x6178900400000000ull
#define ID_AHA_2940AU_1		0x6178900478619004ull
#define ID_AHA_2930C_VAR	0x6038900438689004ull

#define ID_AIC7870		0x7078900400000000ull
#define ID_AHA_2940		0x7178900400000000ull
#define ID_AHA_3940		0x7278900400000000ull
#define ID_AHA_398X		0x7378900400000000ull
#define ID_AHA_2944		0x7478900400000000ull
#define ID_AHA_3944		0x7578900400000000ull

#define ID_AIC7880		0x8078900400000000ull
#define ID_AIC7880_B		0x8078900478809004ull
#define ID_AHA_2940AU_CN	0x2178900478219004ull
#define ID_AHA_2940U		0x8178900400000000ull
#define ID_AHA_3940U		0x8278900400000000ull
#define ID_AHA_2944U		0x8478900400000000ull
#define ID_AHA_3944U		0x8578900400000000ull
#define ID_AHA_398XU		0x8378900400000000ull
#define ID_AHA_4944U		0x8678900400000000ull
#define ID_AHA_2940UB		0x8178900478819004ull
#define ID_AHA_2930U		0x8878900478889004ull
#define ID_AHA_2940U_PRO	0x8778900478879004ull
#define ID_AHA_2940U_CN		0x0078900478009004ull

#define ID_AIC7895		0x7895900478959004ull
#define ID_AIC7895_RAID_PORT	0x7893900478939004ull
#define ID_AHA_2940U_DUAL	0x7895900478919004ull
#define ID_AHA_3940AU		0x7895900478929004ull
#define ID_AHA_3944AU		0x7895900478949004ull

#define ID_AIC7890		0x001F9005000F9005ull
#define ID_AHA_2930U2		0x0011900501819005ull
#define ID_AHA_2940U2B		0x00109005A1009005ull
#define ID_AHA_2940U2_OEM	0x0010900521809005ull
#define ID_AHA_2940U2		0x00109005A1809005ull
#define ID_AHA_2950U2B		0x00109005E1009005ull

#define ID_AIC7896		0x005F9005FFFF9005ull
#define ID_AHA_3950U2B_0	0x00509005FFFF9005ull
#define ID_AHA_3950U2B_1	0x00509005F5009005ull
#define ID_AHA_3950U2D_0	0x00519005FFFF9005ull
#define ID_AHA_3950U2D_1	0x00519005B5009005ull

#define ID_AIC7810		0x1078900400000000ull
#define ID_AIC7815		0x1578900400000000ull

typedef int (ahc_device_setup_t)(pcici_t, char *, ahc_chip *,
				 ahc_feature *, ahc_flag *);

static ahc_device_setup_t ahc_aic7850_setup;
static ahc_device_setup_t ahc_aic7860_setup;
static ahc_device_setup_t ahc_aic7870_setup;
static ahc_device_setup_t ahc_aha394X_setup;
static ahc_device_setup_t ahc_aha398X_setup;
static ahc_device_setup_t ahc_aic7880_setup;
static ahc_device_setup_t ahc_aha394XU_setup;
static ahc_device_setup_t ahc_aha398XU_setup;
static ahc_device_setup_t ahc_aic7890_setup;
static ahc_device_setup_t ahc_aic7895_setup;
static ahc_device_setup_t ahc_aic7896_setup;
static ahc_device_setup_t ahc_raid_setup;
static ahc_device_setup_t ahc_aha394XX_setup;
static ahc_device_setup_t ahc_aha398XX_setup;

struct ahc_pci_identity {
	u_int64_t		 full_id;
	u_int64_t		 id_mask;
	char			*name;
	ahc_device_setup_t	*setup;
};

struct ahc_pci_identity ahc_pci_ident_table [] =
{
	/* aic7850 based controllers */
	{
		ID_AHA_2910_15_20_30C,
		ID_ALL_MASK,
		"Adaptec 2910/15/20/30C SCSI adapter",
		ahc_aic7850_setup
	},
	/* aic7860 based controllers */
	{
		ID_AHA_2940AU_0 & ID_DEV_VENDOR_MASK,
		ID_DEV_VENDOR_MASK,
		"Adaptec 2940A Ultra SCSI adapter",
		ahc_aic7860_setup
	},
	{
		ID_AHA_2930C_VAR,
		ID_ALL_MASK,
		"Adaptec 2930C SCSI adapter (VAR)",
		ahc_aic7860_setup
	},
	/* aic7870 based controllers */
	{
		ID_AHA_2940,
		ID_ALL_MASK,
		"Adaptec 2940 SCSI adapter",
		ahc_aic7870_setup
	},
	{
		ID_AHA_3940,
		ID_ALL_MASK,
		"Adaptec 3940 SCSI adapter",
		ahc_aha394X_setup
	},
	{
		ID_AHA_398X,
		ID_ALL_MASK,
		"Adaptec 398X SCSI RAID adapter",
		ahc_aha398X_setup
	},
	{
		ID_AHA_2944,
		ID_ALL_MASK,
		"Adaptec 2944 SCSI adapter",
		ahc_aic7870_setup
	},
	{
		ID_AHA_3944,
		ID_ALL_MASK,
		"Adaptec 3944 SCSI adapter",
		ahc_aha394X_setup
	},
	/* aic7880 based controllers */
	{
		ID_AHA_2940AU_CN,
		ID_ALL_MASK,
		"Adaptec 2940A/CN Ultra SCSI adapter",
		ahc_aic7880_setup
	},
	{
		ID_AHA_2940U,
		ID_ALL_MASK,
		"Adaptec 2940 Ultra SCSI adapter",
		ahc_aic7880_setup
	},
	{
		ID_AHA_3940U,
		ID_ALL_MASK,
		"Adaptec 3940 Ultra SCSI adapter",
		ahc_aha394XU_setup
	},
	{
		ID_AHA_2944U,
		ID_ALL_MASK,
		"Adaptec 2944 Ultra SCSI adapter",
		ahc_aic7880_setup
	},
	{
		ID_AHA_3944U,
		ID_ALL_MASK,
		"Adaptec 3944 Ultra SCSI adapter",
		ahc_aha394XU_setup
	},
	{
		ID_AHA_398XU,
		ID_ALL_MASK,
		"Adaptec 398X Ultra SCSI RAID adapter",
		ahc_aha398XU_setup
	},
	{
		/* XXX Don't know the slot numbers so can't identify channels */
		ID_AHA_4944U,
		ID_ALL_MASK,
		"Adaptec 4944 Ultra SCSI adapter",
		ahc_aic7880_setup
	},
	{
		ID_AHA_2940UB,
		ID_ALL_MASK,
		"Adaptec 2940B Ultra SCSI adapter",
		ahc_aic7880_setup
	},
	{
		ID_AHA_2930U,
		ID_ALL_MASK,
		"Adaptec 2930 Ultra SCSI adapter",
		ahc_aic7880_setup
	},
	{
		ID_AHA_2940U_PRO,
		ID_ALL_MASK,
		"Adaptec 2940 Pro Ultra SCSI adapter",
		ahc_aic7880_setup
	},
	{
		ID_AHA_2940U_CN,
		ID_ALL_MASK,
		"Adaptec 2940/CN Ultra SCSI adapter",
		ahc_aic7880_setup
	},
	/* aic7890 based controllers */
	{
		ID_AHA_2930U2,
		ID_ALL_MASK,
		"Adaptec 2930 Ultra2 SCSI adapter",
		ahc_aic7890_setup
	},
	{
		ID_AHA_2940U2B,
		ID_ALL_MASK,
		"Adaptec 2940B Ultra2 SCSI adapter",
		ahc_aic7890_setup
	},
	{
		ID_AHA_2940U2_OEM,
		ID_ALL_MASK,
		"Adaptec 2940 Ultra2 SCSI adapter (OEM)",
		ahc_aic7890_setup
	},
	{
		ID_AHA_2940U2,
		ID_ALL_MASK,
		"Adaptec 2940 Ultra2 SCSI adapter",
		ahc_aic7890_setup
	},
	{
		ID_AHA_2950U2B,
		ID_ALL_MASK,
		"Adaptec 2950 Ultra2 SCSI adapter",
		ahc_aic7890_setup
	},
	/* aic7895 based controllers */	
	{
		ID_AHA_2940U_DUAL,
		ID_ALL_MASK,
		"Adaptec 2940/DUAL Ultra SCSI adapter",
		ahc_aic7895_setup
	},
	{
		ID_AHA_3940AU,
		ID_ALL_MASK,
		"Adaptec 3940A Ultra SCSI adapter",
		ahc_aic7895_setup
	},
	{
		ID_AHA_3944AU,
		ID_ALL_MASK,
		"Adaptec 3944A Ultra SCSI adapter",
		ahc_aic7895_setup
	},
	/* aic7896/97 based controllers */	
	{
		ID_AHA_3950U2B_0,
		ID_ALL_MASK,
		"Adaptec 3950B Ultra2 SCSI adapter",
		ahc_aic7896_setup
	},
	{
		ID_AHA_3950U2B_1,
		ID_ALL_MASK,
		"Adaptec 3950B Ultra2 SCSI adapter",
		ahc_aic7896_setup
	},
	{
		ID_AHA_3950U2D_0,
		ID_ALL_MASK,
		"Adaptec 3950D Ultra2 SCSI adapter",
		ahc_aic7896_setup
	},
	{
		ID_AHA_3950U2D_1,
		ID_ALL_MASK,
		"Adaptec 3950D Ultra2 SCSI adapter",
		ahc_aic7896_setup
	},
	/* Generic chip probes for devices we don't know 'exactly' */
	{
		ID_AIC7850 & ID_DEV_VENDOR_MASK,
		ID_DEV_VENDOR_MASK,
		"Adaptec aic7850 SCSI adapter",
		ahc_aic7850_setup
	},
	{
		ID_AIC7855 & ID_DEV_VENDOR_MASK,
		ID_DEV_VENDOR_MASK,
		"Adaptec aic7855 SCSI adapter",
		ahc_aic7850_setup
	},
	{
		ID_AIC7860 & ID_DEV_VENDOR_MASK,
		ID_DEV_VENDOR_MASK,
		"Adaptec aic7860 SCSI adapter",
		ahc_aic7860_setup
	},
	{
		ID_AIC7870 & ID_DEV_VENDOR_MASK,
		ID_DEV_VENDOR_MASK,
		"Adaptec aic7870 SCSI adapter",
		ahc_aic7870_setup
	},
	{
		ID_AIC7880 & ID_DEV_VENDOR_MASK,
		ID_DEV_VENDOR_MASK,
		"Adaptec aic7880 Ultra SCSI adapter",
		ahc_aic7880_setup
	},
	{
		ID_AIC7890 & ID_DEV_VENDOR_MASK,
		ID_DEV_VENDOR_MASK,
		"Adaptec aic7890/91 Ultra2 SCSI adapter",
		ahc_aic7890_setup
	},
	{
		ID_AIC7895 & ID_DEV_VENDOR_MASK,
		ID_DEV_VENDOR_MASK,
		"Adaptec aic7895 Ultra SCSI adapter",
		ahc_aic7895_setup
	},
	{
		ID_AIC7895_RAID_PORT & ID_DEV_VENDOR_MASK,
		ID_DEV_VENDOR_MASK,
		"Adaptec aic7895 Ultra SCSI adapter (RAID PORT)",
		ahc_aic7895_setup
	},
	{
		ID_AIC7896 & ID_DEV_VENDOR_MASK,
		ID_DEV_VENDOR_MASK,
		"Adaptec aic7896/97 Ultra2 SCSI adapter",
		ahc_aic7896_setup
	},
	{
		ID_AIC7810 & ID_DEV_VENDOR_MASK,
		ID_DEV_VENDOR_MASK,
		"Adaptec aic7810 RAID memory controller",
		ahc_raid_setup
	},
	{
		ID_AIC7815 & ID_DEV_VENDOR_MASK,
		ID_DEV_VENDOR_MASK,
		"Adaptec aic7815 RAID memory controller",
		ahc_raid_setup
	}
};

static const int ahc_num_pci_devs =
	sizeof(ahc_pci_ident_table) / sizeof(*ahc_pci_ident_table);
		
#define AHC_394X_SLOT_CHANNEL_A	4
#define AHC_394X_SLOT_CHANNEL_B	5

#define AHC_398X_SLOT_CHANNEL_A	4
#define AHC_398X_SLOT_CHANNEL_B	8
#define AHC_398X_SLOT_CHANNEL_C	12

#define	DEVCONFIG		0x40
#define		SCBSIZE32	0x00010000ul	/* aic789X only */
#define		MPORTMODE	0x00000400ul	/* aic7870 only */
#define		RAMPSM		0x00000200ul	/* aic7870 only */
#define		VOLSENSE	0x00000100ul
#define		SCBRAMSEL	0x00000080ul
#define		MRDCEN		0x00000040ul
#define		EXTSCBTIME	0x00000020ul	/* aic7870 only */
#define		EXTSCBPEN	0x00000010ul	/* aic7870 only */
#define		BERREN		0x00000008ul
#define		DACEN		0x00000004ul
#define		STPWLEVEL	0x00000002ul
#define		DIFACTNEGEN	0x00000001ul	/* aic7870 only */

#define	CSIZE_LATTIME		0x0c
#define		CACHESIZE	0x0000003ful	/* only 5 bits */
#define		LATTIME		0x0000ff00ul

static struct ahc_pci_identity *ahc_find_pci_device(pcici_t tag);
static void check_extport(struct ahc_softc *ahc, u_int *sxfrctl1);
static void configure_termination(struct ahc_softc *ahc,
				  struct seeprom_config *sc,
				  struct seeprom_descriptor *sd,
	 			  u_int *sxfrctl1);

static void ahc_ultra2_term_detect(struct ahc_softc *ahc,
				   int *enableSEC_low,
				   int *enableSEC_high,
				   int *enablePRI_low,
				   int *enablePRI_high,
				   int *eeprom_present);
static void aic787X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
				 int *internal68_present,
				 int *externalcable_present,
				 int *eeprom_present);
static void aic785X_cable_detect(struct ahc_softc *ahc, int *internal50_present,
				 int *externalcable_present,
				 int *eeprom_present);
static int acquire_seeprom(struct ahc_softc *ahc,
			   struct seeprom_descriptor *sd);
static void release_seeprom(struct seeprom_descriptor *sd);
static void write_brdctl(struct ahc_softc *ahc, u_int8_t value);
static u_int8_t read_brdctl(struct ahc_softc *ahc);

static struct ahc_softc *first_398X;

static const char* ahc_pci_probe(pcici_t tag, pcidi_t type);
static void ahc_pci_attach(pcici_t config_id, int unit);

/* Exported for use in the ahc_intr routine */
void ahc_pci_intr(struct ahc_softc *ahc);

static struct	pci_device ahc_pci_driver = {
	"ahc",
	ahc_pci_probe,
	ahc_pci_attach,
	&ahc_unit,
	NULL
}; 

DATA_SET (pcidevice_set, ahc_pci_driver);

static struct ahc_pci_identity *
ahc_find_pci_device(pcici_t tag)
{
	u_int64_t  full_id;
	struct	   ahc_pci_identity *entry;
	u_int	   deviceid;
	u_int	   vendorid;
	u_int	   subdeviceid;
	u_int	   subvendorid;
	u_int	   i;

	deviceid = pci_cfgread(tag, PCIR_DEVICE, /*bytes*/2);
	vendorid = pci_cfgread(tag, PCIR_VENDOR, /*bytes*/2);
	subdeviceid = pci_cfgread(tag, PCIR_SUBDEV_0, /*bytes*/2);
	subvendorid = pci_cfgread(tag, PCIR_SUBVEND_0, /*bytes*/2);
	full_id = ahc_compose_id(deviceid,
				 vendorid,
				 subdeviceid,
				 subvendorid);

	for (i = 0; i < ahc_num_pci_devs; i++) {
		entry = &ahc_pci_ident_table[i];
		if (entry->full_id == (full_id & entry->id_mask))
			return (entry);
	}
	return (NULL);
}

static const char*
ahc_pci_probe(pcici_t tag, pcidi_t type)
{
	struct	   ahc_pci_identity *entry;

	entry = ahc_find_pci_device(tag);
	if (entry != NULL)
		return (entry->name);
	return (NULL);
}

static void