baff09db2c
can use all of the s/g entries available on smaller cards. This is necessary if we want to be able to handle a non-page-aligned 64k transfer on 2.x and 3.x firmware. Fix a missing splx() that may have left us at splbio() for longer than desired. Reduce shadowing of controller-supplied parameters a little.
213 lines
6.0 KiB
C
213 lines
6.0 KiB
C
/*-
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* Copyright (c) 1999 Michael Smith
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/bio.h>
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#include <sys/conf.h>
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#include <sys/devicestat.h>
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#include <sys/disk.h>
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#include <machine/bus_memio.h>
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#include <machine/bus_pio.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <pci/pcireg.h>
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#include <pci/pcivar.h>
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#include <dev/mlx/mlxio.h>
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#include <dev/mlx/mlxvar.h>
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#include <dev/mlx/mlxreg.h>
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static int mlx_pci_probe(device_t dev);
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static int mlx_pci_attach(device_t dev);
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static device_method_t mlx_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, mlx_pci_probe),
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DEVMETHOD(device_attach, mlx_pci_attach),
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DEVMETHOD(device_detach, mlx_detach),
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DEVMETHOD(device_shutdown, mlx_shutdown),
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DEVMETHOD(device_suspend, mlx_suspend),
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DEVMETHOD(device_resume, mlx_resume),
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_driver_added, bus_generic_driver_added),
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{ 0, 0 }
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};
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static driver_t mlx_pci_driver = {
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"mlx",
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mlx_methods,
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sizeof(struct mlx_softc)
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};
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DRIVER_MODULE(mlx, pci, mlx_pci_driver, mlx_devclass, 0, 0);
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struct mlx_ident
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{
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u_int16_t vendor;
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u_int16_t device;
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u_int16_t subvendor;
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u_int16_t subdevice;
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int iftype;
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char *desc;
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} mlx_identifiers[] = {
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{0x1069, 0x0001, 0x0000, 0x0000, MLX_IFTYPE_2, "Mylex version 2 RAID interface"},
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{0x1069, 0x0002, 0x0000, 0x0000, MLX_IFTYPE_3, "Mylex version 3 RAID interface"},
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{0x1069, 0x0010, 0x0000, 0x0000, MLX_IFTYPE_4, "Mylex version 4 RAID interface"},
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{0x1011, 0x1065, 0x1069, 0x0020, MLX_IFTYPE_5, "Mylex version 5 RAID interface"},
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{0, 0, 0, 0, 0, 0}
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};
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static int
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mlx_pci_probe(device_t dev)
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{
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struct mlx_ident *m;
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debug_called(1);
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for (m = mlx_identifiers; m->vendor != 0; m++) {
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if ((m->vendor == pci_get_vendor(dev)) &&
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(m->device == pci_get_device(dev)) &&
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((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) &&
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(m->subdevice == pci_get_subdevice(dev))))) {
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device_set_desc(dev, m->desc);
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return(0);
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}
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}
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return(ENXIO);
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}
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static int
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mlx_pci_attach(device_t dev)
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{
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struct mlx_softc *sc;
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int i, rid, error;
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u_int32_t command;
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debug_called(1);
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/*
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* Make sure we are going to be able to talk to this board.
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*/
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command = pci_read_config(dev, PCIR_COMMAND, 2);
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if ((command & PCIM_CMD_MEMEN) == 0) {
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device_printf(dev, "memory window not available\n");
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return(ENXIO);
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}
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/* force the busmaster enable bit on */
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command |= PCIM_CMD_BUSMASTEREN;
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pci_write_config(dev, PCIR_COMMAND, command, 2);
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/*
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* Initialise softc.
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*/
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sc = device_get_softc(dev);
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bzero(sc, sizeof(*sc));
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sc->mlx_dev = dev;
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/*
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* Work out what sort of adapter this is (we need to know this in order
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* to map the appropriate interface resources).
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*/
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sc->mlx_iftype = 0;
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for (i = 0; mlx_identifiers[i].vendor != 0; i++) {
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if ((mlx_identifiers[i].vendor == pci_get_vendor(dev)) &&
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(mlx_identifiers[i].device == pci_get_device(dev))) {
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sc->mlx_iftype = mlx_identifiers[i].iftype;
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break;
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}
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}
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if (sc->mlx_iftype == 0) /* shouldn't happen */
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return(ENXIO);
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/*
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* Allocate the PCI register window.
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*/
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/* type 2/3 adapters have an I/O region we don't use at base 0 */
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switch(sc->mlx_iftype) {
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case MLX_IFTYPE_2:
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case MLX_IFTYPE_3:
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rid = MLX_CFG_BASE1;
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break;
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case MLX_IFTYPE_4:
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case MLX_IFTYPE_5:
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rid = MLX_CFG_BASE0;
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break;
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}
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sc->mlx_mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 1, RF_ACTIVE);
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if (sc->mlx_mem == NULL) {
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device_printf(sc->mlx_dev, "couldn't allocate mailbox window\n");
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mlx_free(sc);
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return(ENXIO);
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}
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sc->mlx_btag = rman_get_bustag(sc->mlx_mem);
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sc->mlx_bhandle = rman_get_bushandle(sc->mlx_mem);
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/*
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* Allocate the parent bus DMA tag appropriate for PCI.
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*/
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error = bus_dma_tag_create(NULL, /* parent */
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1, 0, /* alignment, boundary */
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BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
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BUS_SPACE_MAXADDR, /* highaddr */
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NULL, NULL, /* filter, filterarg */
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MAXBSIZE, MLX_NSEG, /* maxsize, nsegments */
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BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
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BUS_DMA_ALLOCNOW, /* flags */
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&sc->mlx_parent_dmat);
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if (error != 0) {
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device_printf(dev, "can't allocate parent DMA tag\n");
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mlx_free(sc);
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return(ENOMEM);
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}
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/*
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* Do bus-independant initialisation.
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*/
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error = mlx_attach(sc);
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if (error != 0) {
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mlx_free(sc);
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return(error);
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}
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/*
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* Start the controller.
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*/
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mlx_startup(sc);
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return(0);
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}
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