freebsd-skq/sys/dev/aac/aac_pci.c

/*-
 * Copyright (c) 2000 Michael Smith
 * Copyright (c) 2001 Scott Long
 * Copyright (c) 2000 BSDi
 * Copyright (c) 2001 Adaptec, Inc.
 * 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.
 * 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.
 *
 * 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/cdefs.h>
__FBSDID("$FreeBSD$");

/*
 * PCI bus interface and resource allocation.
 */

#include "opt_aac.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>

#include <sys/bio.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/disk.h>

#include <machine/bus_memio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>

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

#include <dev/aac/aacreg.h>
#include <dev/aac/aac_ioctl.h>
#include <dev/aac/aacvar.h>

static int	aac_pci_probe(device_t dev);
static int	aac_pci_attach(device_t dev);

static device_method_t aac_methods[] = {
	/* Device interface */
	DEVMETHOD(device_probe,		aac_pci_probe),
	DEVMETHOD(device_attach,	aac_pci_attach),
	DEVMETHOD(device_detach,	aac_detach),
	DEVMETHOD(device_suspend,	aac_suspend),
	DEVMETHOD(device_resume,	aac_resume),

	DEVMETHOD(bus_print_child,	bus_generic_print_child),
	DEVMETHOD(bus_driver_added,	bus_generic_driver_added),
	{ 0, 0 }
};

static driver_t aac_pci_driver = {
	"aac",
	aac_methods,
	sizeof(struct aac_softc)
};

static devclass_t	aac_devclass;

DRIVER_MODULE(aac, pci, aac_pci_driver, aac_devclass, 0, 0);

struct aac_ident
{
	u_int16_t		vendor;
	u_int16_t		device;
	u_int16_t		subvendor;
	u_int16_t		subdevice;
	int			hwif;
	int			quirks;
	char			*desc;
} aac_identifiers[] = {
	{0x1028, 0x0001, 0x1028, 0x0001, AAC_HWIF_I960RX, 0,
	"Dell PERC 2/Si"},
	{0x1028, 0x0002, 0x1028, 0x0002, AAC_HWIF_I960RX, 0,
	"Dell PERC 3/Di"},
	{0x1028, 0x0003, 0x1028, 0x0003, AAC_HWIF_I960RX, 0,
	"Dell PERC 3/Si"},
	{0x1028, 0x0004, 0x1028, 0x00d0, AAC_HWIF_I960RX, 0,
	"Dell PERC 3/Si"},
	{0x1028, 0x0002, 0x1028, 0x00d1, AAC_HWIF_I960RX, 0,
	"Dell PERC 3/Di"},
	{0x1028, 0x0002, 0x1028, 0x00d9, AAC_HWIF_I960RX, 0,
	"Dell PERC 3/Di"},
	{0x1028, 0x000a, 0x1028, 0x0106, AAC_HWIF_I960RX, 0,
	"Dell PERC 3/Di"},
	{0x1028, 0x000a, 0x1028, 0x011b, AAC_HWIF_I960RX, 0,
	"Dell PERC 3/Di"},
	{0x1028, 0x000a, 0x1028, 0x0121, AAC_HWIF_I960RX, 0,
	"Dell PERC 3/Di"},
	{0x1011, 0x0046, 0x9005, 0x0364, AAC_HWIF_STRONGARM, 0,
	"Adaptec AAC-364"},
	{0x1011, 0x0046, 0x9005, 0x0365, AAC_HWIF_STRONGARM,
	 AAC_FLAGS_BROKEN_MEMMAP, "Adaptec SCSI RAID 5400S"},
	{0x1011, 0x0046, 0x9005, 0x1364, AAC_HWIF_STRONGARM, AAC_FLAGS_PERC2QC,
	 "Dell PERC 2/QC"},
	{0x1011, 0x0046, 0x103c, 0x10c2, AAC_HWIF_STRONGARM, 0,
	 "HP NetRaid-4M"},
	{0x9005, 0x0285, 0x9005, 0x0285, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
	 AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2200S"},
	{0x9005, 0x0285, 0x1028, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
	 AAC_FLAGS_256FIBS, "Dell PERC 320/DC"},
	{0x9005, 0x0285, 0x9005, 0x0286, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
	 AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2120S"},
	{0x9005, 0x0285, 0x9005, 0x0290, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
	 "Adaptec SCSI RAID 2410SA"},
	{0, 0, 0, 0, 0, 0, 0}
};

/*
 * Determine whether this is one of our supported adapters.
 */
static int
aac_pci_probe(device_t dev)
{
	struct aac_ident *m;

	debug_called(1);

	for (m = aac_identifiers; m->vendor != 0; m++) {
		if ((m->vendor == pci_get_vendor(dev)) &&
		    (m->device == pci_get_device(dev)) &&
		    ((m->subvendor == 0) || (m->subvendor ==
					     pci_get_subvendor(dev))) &&
		    ((m->subdevice == 0) || ((m->subdevice ==
					      pci_get_subdevice(dev))))) {
		
			device_set_desc(dev, m->desc);
			return(-10);	/* allow room to be overridden */
		}
	}
	return(ENXIO);
}

/*
 * Allocate resources for our device, set up the bus interface.
 */
static int
aac_pci_attach(device_t dev)
{
	struct aac_softc *sc;
	int i, error;
	u_int32_t command;

	debug_called(1);

	/*
	 * Initialise softc.
	 */
	sc = device_get_softc(dev);
	bzero(sc, sizeof(*sc));
	sc->aac_dev = dev;

	/* assume failure is 'not configured' */
	error = ENXIO;

	/* 
	 * Verify that the adapter is correctly set up in PCI space.
	 */
	command = pci_read_config(sc->aac_dev, PCIR_COMMAND, 2);
	command |= PCIM_CMD_BUSMASTEREN;
	pci_write_config(dev, PCIR_COMMAND, command, 2);
	command = pci_read_config(sc->aac_dev, PCIR_COMMAND, 2);
	if (!(command & PCIM_CMD_BUSMASTEREN)) {
		device_printf(sc->aac_dev, "can't enable bus-master feature\n");
		goto out;
	}
	if ((command & PCIM_CMD_MEMEN) == 0) {
		device_printf(sc->aac_dev, "memory window not available\n");
		goto out;
	}

	/*
	 * Allocate the PCI register window.
	 */
	sc->aac_regs_rid = PCIR_BAR(0);
	if ((sc->aac_regs_resource = bus_alloc_resource(sc->aac_dev,
							SYS_RES_MEMORY,
							&sc->aac_regs_rid,
							0, ~0, 1,
							RF_ACTIVE)) == NULL) {
		device_printf(sc->aac_dev,
			      "couldn't allocate register window\n");
		goto out;
	}
	sc->aac_btag = rman_get_bustag(sc->aac_regs_resource);
	sc->aac_bhandle = rman_get_bushandle(sc->aac_regs_resource);

	/* 
	 * Allocate and connect our interrupt.
	 */
	sc->aac_irq_rid = 0;
	if ((sc->aac_irq = bus_alloc_resource(sc->aac_dev, SYS_RES_IRQ,
			   		      &sc->aac_irq_rid, 0, ~0, 1,
			   		      RF_SHAREABLE |
					      RF_ACTIVE)) == NULL) {
		device_printf(sc->aac_dev, "can't allocate interrupt\n");
		goto out;
	}
#ifndef INTR_ENTROPY
#define INTR_ENTROPY 0
#endif
	if (bus_setup_intr(sc->aac_dev, sc->aac_irq,
			   INTR_MPSAFE|INTR_TYPE_BIO|INTR_ENTROPY, aac_intr,
			   sc, &sc->aac_intr)) {
		device_printf(sc->aac_dev, "can't set up interrupt\n");
		goto out;
	}

	/* assume failure is 'out of memory' */
	error = ENOMEM;

	/*
	 * Allocate the parent bus DMA tag appropriate for our PCI interface.
	 * 
	 * Note that some of these controllers are 64-bit capable.
	 */
	if (bus_dma_tag_create(NULL, 			/* parent */
			       PAGE_SIZE, 0,		/* algnmnt, boundary */
			       BUS_SPACE_MAXADDR,	/* lowaddr */
			       BUS_SPACE_MAXADDR, 	/* highaddr */
			       NULL, NULL, 		/* filter, filterarg */
			       BUS_SPACE_MAXSIZE_32BIT,	/* maxsize */
			       AAC_MAXSGENTRIES,	/* nsegments */
			       BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
			       0,			/* flags */
			       NULL, NULL,		/* No locking needed */
			       &sc->aac_parent_dmat)) {
		device_printf(sc->aac_dev, "can't allocate parent DMA tag\n");
		goto out;
	}

	/* 
	 * Detect the hardware interface version, set up the bus interface
	 * indirection.
	 */
	sc->aac_hwif = AAC_HWIF_UNKNOWN;
	for (i = 0; aac_identifiers[i].vendor != 0; i++) {
		if ((aac_identifiers[i].vendor == pci_get_vendor(dev)) &&
		    (aac_identifiers[i].device == pci_get_device(dev)) &&
		    (aac_identifiers[i].subvendor == pci_get_subvendor(dev)) &&
		    (aac_identifiers[i].subdevice == pci_get_subdevice(dev))) {
			sc->aac_hwif = aac_identifiers[i].hwif;
			switch(sc->aac_hwif) {
			case AAC_HWIF_I960RX:
				debug(2, "set hardware up for i960Rx");
				sc->aac_if = aac_rx_interface;
				break;

			case AAC_HWIF_STRONGARM:
				debug(2, "set hardware up for StrongARM");
				sc->aac_if = aac_sa_interface;
				break;
			case AAC_HWIF_FALCON:
				debug(2, "set hardware up for Falcon/PPC");
				sc->aac_if = aac_fa_interface;
				break;
			}

			/* Set up quirks */
			sc->flags = aac_identifiers[i].quirks;

			break;
		}
	}
	if (sc->aac_hwif == AAC_HWIF_UNKNOWN) {
		device_printf(sc->aac_dev, "unknown hardware type\n");
		error = ENXIO;
		goto out;
	}


	/*
	 * Do bus-independent initialisation.
	 */
	error = aac_attach(sc);
	
out:
	if (error)
		aac_free(sc);
	return(error);
}