A new driver for PCI:SCSI RAID controllers based on the Adaptec FSA

design.  This includes integrated Dell RAID controllers, the Dell
PERC 2/QC and the HP NetRAID-4M.

1 files changed, 272 insertions, 0 deletions

diff --git a/sys/dev/aac/aac_pci.c b/sys/dev/aac/aac_pci.c
new file mode 100644
index 0000000..f931bd1
--- /dev/null
+++ b/sys/dev/aac/aac_pci.c
@@ -0,0 +1,272 @@
+/*-
+ * Copyright (c) 2000 Michael Smith
+ * Copyright (c) 2000 BSDi
+ * 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.
+ *
+ *	$FreeBSD$
+ */
+
+/*
+ * PCI bus interface and resource allocation.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+
+#include <dev/aac/aac_compat.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/devicestat.h>
+#include <sys/disk.h>
+
+#include <machine/bus_memio.h>
+#include <machine/bus.h>
+#include <machine/resource.h>
+#include <sys/rman.h>
+
+#include <pci/pcireg.h>
+#include <pci/pcivar.h>
+
+#include <dev/aac/aacreg.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_shutdown,	aac_shutdown),
+    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)
+};
+
+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;
+    char		*desc;
+} aac_identifiers[] = {
+    {0x1028, 0x0001, 0x1028, 0x0001, AAC_HWIF_I960RX,    "Dell PERC 2/Si"},
+    {0x1028, 0x0002, 0x1028, 0x0002, AAC_HWIF_I960RX,    "Dell PERC 3/Di"},
+    {0x1028, 0x0003, 0x1028, 0x0003, AAC_HWIF_I960RX,    "Dell PERC 3/Si"},
+    {0x9005, 0x0282, 0x9005, 0x0282, AAC_HWIF_I960RX,    "Adaptec AAC-2622"},
+    {0x1011, 0x0046, 0x9005, 0x0364, AAC_HWIF_STRONGARM, "Adaptec AAC-364"},
+    {0x1011, 0x0046, 0x9005, 0x0365, AAC_HWIF_STRONGARM, "Adaptec AAC-3642"},
+    {0x1011, 0x0046, 0x9005, 0x1364, AAC_HWIF_STRONGARM, "Dell PERC 2/QC"},
+    {0x1011, 0x0046, 0x9005, 0x1365, AAC_HWIF_STRONGARM, "Dell PERC 3/QC"},	/* XXX guess */
+    {0x1011, 0x0046, 0x103c, 0x10c2, AAC_HWIF_STRONGARM, "HP NetRaid-4M"},
+    {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(0);
+	}
+    }
+    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 = 0x10;	/* first base address register */
+    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;
+    }
+    if (bus_setup_intr(sc->aac_dev, sc->aac_irq, INTR_TYPE_BIO,  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 */
+			   1, 0, 			/* alignment, boundary */
+			   BUS_SPACE_MAXADDR_32BIT,	/* lowaddr */
+			   BUS_SPACE_MAXADDR, 		/* highaddr */
+			   NULL, NULL, 			/* filter, filterarg */
+			   MAXBSIZE, AAC_MAXSGENTRIES,	/* maxsize, nsegments */
+			   BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
+			   BUS_DMA_ALLOCNOW,		/* flags */
+			   &sc->aac_parent_dmat)) {
+	device_printf(sc->aac_dev, "can't allocate parent DMA tag\n");
+	goto out;
+    }
+
+    /*
+     * Create DMA tag for mapping buffers into controller-addressable space.
+     */
+    if (bus_dma_tag_create(sc->aac_parent_dmat, 	/* parent */
+			   1, 0, 			/* alignment, boundary */
+			   BUS_SPACE_MAXADDR,		/* lowaddr */
+			   BUS_SPACE_MAXADDR, 		/* highaddr */
+			   NULL, NULL, 			/* filter, filterarg */
+			   MAXBSIZE, AAC_MAXSGENTRIES,	/* maxsize, nsegments */
+			   BUS_SPACE_MAXSIZE_32BIT,	/* maxsegsize */
+			   0,				/* flags */
+			   &sc->aac_buffer_dmat)) {
+	device_printf(sc->aac_dev, "can't allocate buffer DMA tag\n");
+	goto out;
+    }
+
+    /*
+     * Create DMA tag for mapping FIBs into controller-addressable space..
+     */
+    if (bus_dma_tag_create(sc->aac_parent_dmat, 			/* parent */
+			   1, 0, 					/* alignment, boundary */
+			   BUS_SPACE_MAXADDR,				/* lowaddr */
+			   BUS_SPACE_MAXADDR, 				/* highaddr */
+			   NULL, NULL, 					/* filter, filterarg */
+			   AAC_CLUSTER_COUNT * sizeof(struct aac_fib), 1,/* maxsize, nsegments */
+			   BUS_SPACE_MAXSIZE_32BIT,			/* maxsegsize */
+			   0,						/* flags */
+			   &sc->aac_fib_dmat)) {
+	device_printf(sc->aac_dev, "can't allocate FIB DMA tag\n");
+	goto out;
+    }
+
+    /* 
+     * Detect the hardware interface version, set up the bus interface indirection.
+     */
+    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))) {
+	    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;
+	    }
+	    break;
+	}
+    }
+
+    /*
+     * Do bus-independent initialisation.
+     */
+    error = aac_attach(sc);
+    
+out:
+    if (error)
+	aac_free(sc);
+    return(error);
+}