0444d5b59a
Prepare for PCI Scatter-Gather map. Panic if driver tries alpha_XXX_dmamap() out of range.
179 lines
4.4 KiB
C
179 lines
4.4 KiB
C
/*-
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* Copyright (c) 2000 Andrew Gallatin
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_cpu.h"
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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/module.h>
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#include <sys/bus.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <sys/malloc.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <alpha/isa/isavar.h>
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#include <alpha/pci/irongatereg.h>
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#include <alpha/pci/irongatevar.h>
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#include <machine/bwx.h>
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#include <machine/cpuconf.h>
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#include <machine/intr.h>
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#include <machine/intrcnt.h>
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#include <machine/md_var.h>
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#include <machine/resource.h>
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#include <machine/rpb.h>
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#include <machine/sgmap.h>
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#include <vm/vm.h>
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#include <vm/vm_page.h>
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#define KV(pa) ALPHA_PHYS_TO_K0SEG(pa)
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static devclass_t irongate_devclass;
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static device_t irongate0; /* XXX only one for now */
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struct irongate_softc {
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int junk; /* no softc */
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};
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#define IRONGATE_SOFTC(dev) (struct irongate_softc*) device_get_softc(dev)
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static alpha_chipset_read_hae_t irongate_read_hae;
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static alpha_chipset_write_hae_t irongate_write_hae;
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static alpha_chipset_t irongate_chipset = {
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irongate_read_hae,
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irongate_write_hae,
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};
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/*
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* There doesn't appear to be an hae on this platform
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*/
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static u_int64_t
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irongate_read_hae(void)
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{
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return 0;
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}
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static void
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irongate_write_hae(u_int64_t hae)
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{
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}
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static int irongate_probe(device_t dev);
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static int irongate_attach(device_t dev);
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static device_method_t irongate_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, irongate_probe),
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DEVMETHOD(device_attach, irongate_attach),
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/* Bus interface */
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_setup_intr, isa_setup_intr),
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DEVMETHOD(bus_teardown_intr, isa_teardown_intr),
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{ 0, 0 }
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};
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static driver_t irongate_driver = {
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"irongate",
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irongate_methods,
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sizeof(struct irongate_softc),
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};
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void
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irongate_init()
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{
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static int initted = 0;
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static struct bwx_space io_space, mem_space;
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if (initted) return;
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initted = 1;
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chipset = irongate_chipset;
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bwx_init_space(&io_space, KV(IRONGATE_IO));
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bwx_init_space(&mem_space, KV(IRONGATE_MEM));
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busspace_isa_io = (struct alpha_busspace *) &io_space;
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busspace_isa_mem = (struct alpha_busspace *) &mem_space;
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if (platform.pci_intr_init)
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platform.pci_intr_init();
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}
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static int
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irongate_probe(device_t dev)
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{
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if (irongate0)
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return ENXIO;
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irongate0 = dev;
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device_set_desc(dev, "AMD 751 Core Logic chipset");
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isa_init_intr();
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device_add_child(dev, "pcib", 0);
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return 0;
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}
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static int
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irongate_attach(device_t dev)
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{
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irongate_init();
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if (!platform.iointr) /* XXX */
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set_iointr(alpha_dispatch_intr);
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snprintf(chipset_type, sizeof(chipset_type), "irongate");
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chipset_bwx = 1;
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chipset_ports = IRONGATE_IO;
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chipset_memory = IRONGATE_MEM;
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chipset_dense = IRONGATE_MEM;
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/* no s/g support in this chipset, must use bounce-buffers */
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chipset.sgmap = NULL;
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chipset.pci_sgmap = NULL;
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chipset.dmsize = 4UL * 1024UL * 1024UL * 1024UL;
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chipset.dmoffset = 0;
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bus_generic_attach(dev);
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return 0;
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}
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DRIVER_MODULE(irongate, root, irongate_driver, irongate_devclass, 0, 0);
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