1540 lines
39 KiB
C
1540 lines
39 KiB
C
/*
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* Copyright (c) 1997, Stefan Esser <se@freebsd.org>
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* Copyright (c) 2000, Michael Smith <msmith@freebsd.org>
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* Copyright (c) 2000, BSDi
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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 unmodified, this list of conditions, and the following
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* 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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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*/
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#include "opt_bus.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/linker.h>
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#include <sys/fcntl.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/queue.h>
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#include <sys/sysctl.h>
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#include <sys/types.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <vm/vm_extern.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 <machine/resource.h>
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#include <sys/pciio.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pci_private.h>
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#include "pcib_if.h"
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#include "pci_if.h"
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static uint32_t pci_mapbase(unsigned mapreg);
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static int pci_maptype(unsigned mapreg);
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static int pci_mapsize(unsigned testval);
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static int pci_maprange(unsigned mapreg);
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static void pci_fixancient(pcicfgregs *cfg);
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static int pci_porten(device_t pcib, int b, int s, int f);
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static int pci_memen(device_t pcib, int b, int s, int f);
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static int pci_add_map(device_t pcib, int b, int s, int f, int reg,
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struct resource_list *rl);
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static void pci_add_resources(device_t pcib, device_t bus,
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device_t dev);
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static int pci_probe(device_t dev);
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static int pci_attach(device_t dev);
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static void pci_load_vendor_data(void);
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static int pci_describe_parse_line(char **ptr, int *vendor,
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int *device, char **desc);
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static char *pci_describe_device(device_t dev);
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static int pci_modevent(module_t mod, int what, void *arg);
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static void pci_hdrtypedata(device_t pcib, int b, int s, int f,
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pcicfgregs *cfg);
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static void pci_read_extcap(device_t pcib, pcicfgregs *cfg);
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static device_method_t pci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, pci_probe),
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DEVMETHOD(device_attach, pci_attach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, pci_resume),
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/* Bus interface */
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DEVMETHOD(bus_print_child, pci_print_child),
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DEVMETHOD(bus_probe_nomatch, pci_probe_nomatch),
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DEVMETHOD(bus_read_ivar, pci_read_ivar),
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DEVMETHOD(bus_write_ivar, pci_write_ivar),
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DEVMETHOD(bus_driver_added, bus_generic_driver_added),
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DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
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DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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DEVMETHOD(bus_get_resource_list,pci_get_resource_list),
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DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
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DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
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DEVMETHOD(bus_delete_resource, pci_delete_resource),
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DEVMETHOD(bus_alloc_resource, pci_alloc_resource),
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DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
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DEVMETHOD(bus_child_pnpinfo_str, pci_child_pnpinfo_str_method),
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DEVMETHOD(bus_child_location_str, pci_child_location_str_method),
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/* PCI interface */
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DEVMETHOD(pci_read_config, pci_read_config_method),
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DEVMETHOD(pci_write_config, pci_write_config_method),
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DEVMETHOD(pci_enable_busmaster, pci_enable_busmaster_method),
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DEVMETHOD(pci_disable_busmaster, pci_disable_busmaster_method),
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DEVMETHOD(pci_enable_io, pci_enable_io_method),
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DEVMETHOD(pci_disable_io, pci_disable_io_method),
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DEVMETHOD(pci_get_powerstate, pci_get_powerstate_method),
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DEVMETHOD(pci_set_powerstate, pci_set_powerstate_method),
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DEVMETHOD(pci_assign_interrupt, pci_assign_interrupt_method),
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{ 0, 0 }
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};
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DEFINE_CLASS_0(pci, pci_driver, pci_methods, 0);
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devclass_t pci_devclass;
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DRIVER_MODULE(pci, pcib, pci_driver, pci_devclass, pci_modevent, 0);
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MODULE_VERSION(pci, 1);
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static char *pci_vendordata;
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static size_t pci_vendordata_size;
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struct pci_quirk {
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uint32_t devid; /* Vendor/device of the card */
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int type;
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#define PCI_QUIRK_MAP_REG 1 /* PCI map register in weird place */
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int arg1;
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int arg2;
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};
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struct pci_quirk pci_quirks[] = {
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/* The Intel 82371AB and 82443MX has a map register at offset 0x90. */
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{ 0x71138086, PCI_QUIRK_MAP_REG, 0x90, 0 },
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{ 0x719b8086, PCI_QUIRK_MAP_REG, 0x90, 0 },
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/* As does the Serverworks OSB4 (the SMBus mapping register) */
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{ 0x02001166, PCI_QUIRK_MAP_REG, 0x90, 0 },
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{ 0 }
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};
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/* map register information */
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#define PCI_MAPMEM 0x01 /* memory map */
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#define PCI_MAPMEMP 0x02 /* prefetchable memory map */
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#define PCI_MAPPORT 0x04 /* port map */
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struct devlist pci_devq;
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uint32_t pci_generation;
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uint32_t pci_numdevs = 0;
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/* sysctl vars */
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SYSCTL_NODE(_hw, OID_AUTO, pci, CTLFLAG_RD, 0, "PCI bus tuning parameters");
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static int pci_enable_io_modes = 1;
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TUNABLE_INT("hw.pci.enable_io_modes", (int *)&pci_enable_io_modes);
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SYSCTL_INT(_hw_pci, OID_AUTO, enable_io_modes, CTLFLAG_RW,
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&pci_enable_io_modes, 1,
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"Enable I/O and memory bits in the config register. Some BIOSes do not\n\
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enable these bits correctly. We'd like to do this all the time, but there\n\
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are some peripherals that this causes problems with.");
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/* Find a device_t by bus/slot/function */
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device_t
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pci_find_bsf(uint8_t bus, uint8_t slot, uint8_t func)
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{
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struct pci_devinfo *dinfo;
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STAILQ_FOREACH(dinfo, &pci_devq, pci_links) {
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if ((dinfo->cfg.bus == bus) &&
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(dinfo->cfg.slot == slot) &&
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(dinfo->cfg.func == func)) {
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return (dinfo->cfg.dev);
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}
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}
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return (NULL);
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}
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/* Find a device_t by vendor/device ID */
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device_t
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pci_find_device(uint16_t vendor, uint16_t device)
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{
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struct pci_devinfo *dinfo;
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STAILQ_FOREACH(dinfo, &pci_devq, pci_links) {
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if ((dinfo->cfg.vendor == vendor) &&
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(dinfo->cfg.device == device)) {
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return (dinfo->cfg.dev);
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}
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}
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return (NULL);
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}
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/* return base address of memory or port map */
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static uint32_t
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pci_mapbase(unsigned mapreg)
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{
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int mask = 0x03;
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if ((mapreg & 0x01) == 0)
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mask = 0x0f;
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return (mapreg & ~mask);
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}
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/* return map type of memory or port map */
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static int
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pci_maptype(unsigned mapreg)
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{
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static uint8_t maptype[0x10] = {
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PCI_MAPMEM, PCI_MAPPORT,
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PCI_MAPMEM, 0,
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PCI_MAPMEM, PCI_MAPPORT,
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0, 0,
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PCI_MAPMEM|PCI_MAPMEMP, PCI_MAPPORT,
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PCI_MAPMEM|PCI_MAPMEMP, 0,
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PCI_MAPMEM|PCI_MAPMEMP, PCI_MAPPORT,
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0, 0,
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};
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return maptype[mapreg & 0x0f];
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}
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/* return log2 of map size decoded for memory or port map */
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static int
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pci_mapsize(unsigned testval)
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{
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int ln2size;
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testval = pci_mapbase(testval);
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ln2size = 0;
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if (testval != 0) {
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while ((testval & 1) == 0)
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{
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ln2size++;
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testval >>= 1;
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}
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}
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return (ln2size);
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}
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/* return log2 of address range supported by map register */
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static int
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pci_maprange(unsigned mapreg)
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{
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int ln2range = 0;
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switch (mapreg & 0x07) {
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case 0x00:
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case 0x01:
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case 0x05:
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ln2range = 32;
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break;
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case 0x02:
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ln2range = 20;
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break;
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case 0x04:
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ln2range = 64;
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break;
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}
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return (ln2range);
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}
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/* adjust some values from PCI 1.0 devices to match 2.0 standards ... */
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static void
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pci_fixancient(pcicfgregs *cfg)
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{
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if (cfg->hdrtype != 0)
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return;
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/* PCI to PCI bridges use header type 1 */
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if (cfg->baseclass == PCIC_BRIDGE && cfg->subclass == PCIS_BRIDGE_PCI)
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cfg->hdrtype = 1;
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}
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/* extract header type specific config data */
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static void
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pci_hdrtypedata(device_t pcib, int b, int s, int f, pcicfgregs *cfg)
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{
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#define REG(n, w) PCIB_READ_CONFIG(pcib, b, s, f, n, w)
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switch (cfg->hdrtype) {
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case 0:
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cfg->subvendor = REG(PCIR_SUBVEND_0, 2);
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cfg->subdevice = REG(PCIR_SUBDEV_0, 2);
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cfg->nummaps = PCI_MAXMAPS_0;
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break;
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case 1:
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cfg->subvendor = REG(PCIR_SUBVEND_1, 2);
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cfg->subdevice = REG(PCIR_SUBDEV_1, 2);
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cfg->nummaps = PCI_MAXMAPS_1;
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break;
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case 2:
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cfg->subvendor = REG(PCIR_SUBVEND_2, 2);
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cfg->subdevice = REG(PCIR_SUBDEV_2, 2);
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cfg->nummaps = PCI_MAXMAPS_2;
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break;
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}
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#undef REG
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}
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/* read configuration header into pcicfgregs structure */
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struct pci_devinfo *
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pci_read_device(device_t pcib, int b, int s, int f, size_t size)
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{
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#define REG(n, w) PCIB_READ_CONFIG(pcib, b, s, f, n, w)
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pcicfgregs *cfg = NULL;
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struct pci_devinfo *devlist_entry;
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struct devlist *devlist_head;
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devlist_head = &pci_devq;
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devlist_entry = NULL;
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if (REG(PCIR_DEVVENDOR, 4) != -1) {
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devlist_entry = malloc(size, M_DEVBUF, M_WAITOK | M_ZERO);
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if (devlist_entry == NULL)
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return (NULL);
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cfg = &devlist_entry->cfg;
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cfg->bus = b;
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cfg->slot = s;
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cfg->func = f;
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cfg->vendor = REG(PCIR_VENDOR, 2);
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cfg->device = REG(PCIR_DEVICE, 2);
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cfg->cmdreg = REG(PCIR_COMMAND, 2);
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cfg->statreg = REG(PCIR_STATUS, 2);
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cfg->baseclass = REG(PCIR_CLASS, 1);
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cfg->subclass = REG(PCIR_SUBCLASS, 1);
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cfg->progif = REG(PCIR_PROGIF, 1);
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cfg->revid = REG(PCIR_REVID, 1);
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cfg->hdrtype = REG(PCIR_HDRTYPE, 1);
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cfg->cachelnsz = REG(PCIR_CACHELNSZ, 1);
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cfg->lattimer = REG(PCIR_LATTIMER, 1);
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cfg->intpin = REG(PCIR_INTPIN, 1);
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cfg->intline = REG(PCIR_INTLINE, 1);
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cfg->mingnt = REG(PCIR_MINGNT, 1);
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cfg->maxlat = REG(PCIR_MAXLAT, 1);
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cfg->mfdev = (cfg->hdrtype & PCIM_MFDEV) != 0;
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cfg->hdrtype &= ~PCIM_MFDEV;
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pci_fixancient(cfg);
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pci_hdrtypedata(pcib, b, s, f, cfg);
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if (REG(PCIR_STATUS, 2) & PCIM_STATUS_CAPPRESENT)
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pci_read_extcap(pcib, cfg);
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STAILQ_INSERT_TAIL(devlist_head, devlist_entry, pci_links);
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devlist_entry->conf.pc_sel.pc_bus = cfg->bus;
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devlist_entry->conf.pc_sel.pc_dev = cfg->slot;
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devlist_entry->conf.pc_sel.pc_func = cfg->func;
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devlist_entry->conf.pc_hdr = cfg->hdrtype;
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devlist_entry->conf.pc_subvendor = cfg->subvendor;
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devlist_entry->conf.pc_subdevice = cfg->subdevice;
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devlist_entry->conf.pc_vendor = cfg->vendor;
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devlist_entry->conf.pc_device = cfg->device;
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devlist_entry->conf.pc_class = cfg->baseclass;
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devlist_entry->conf.pc_subclass = cfg->subclass;
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devlist_entry->conf.pc_progif = cfg->progif;
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devlist_entry->conf.pc_revid = cfg->revid;
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pci_numdevs++;
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pci_generation++;
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}
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return (devlist_entry);
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#undef REG
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}
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static void
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pci_read_extcap(device_t pcib, pcicfgregs *cfg)
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{
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#define REG(n, w) PCIB_READ_CONFIG(pcib, cfg->bus, cfg->slot, cfg->func, n, w)
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int ptr, nextptr, ptrptr;
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switch (cfg->hdrtype & PCIM_HDRTYPE) {
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case 0:
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ptrptr = PCIR_CAP_PTR;
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break;
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case 2:
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ptrptr = 0x14;
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break;
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default:
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return; /* no extended capabilities support */
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}
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nextptr = REG(ptrptr, 1); /* sanity check? */
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/*
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* Read capability entries.
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*/
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while (nextptr != 0) {
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/* Sanity check */
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if (nextptr > 255) {
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printf("illegal PCI extended capability offset %d\n",
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nextptr);
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return;
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}
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/* Find the next entry */
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ptr = nextptr;
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nextptr = REG(ptr + 1, 1);
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/* Process this entry */
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switch (REG(ptr, 1)) {
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case PCIY_PMG: /* PCI power management */
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if (cfg->pp.pp_cap == 0) {
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cfg->pp.pp_cap = REG(ptr + PCIR_POWER_CAP, 2);
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cfg->pp.pp_status = ptr + PCIR_POWER_STATUS;
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cfg->pp.pp_pmcsr = ptr + PCIR_POWER_PMCSR;
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if ((nextptr - ptr) > PCIR_POWER_DATA)
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cfg->pp.pp_data = ptr + PCIR_POWER_DATA;
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}
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break;
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case PCIY_MSI: /* PCI MSI */
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cfg->msi.msi_ctrl = REG(ptr + PCIR_MSI_CTRL, 2);
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if (cfg->msi.msi_ctrl & PCIM_MSICTRL_64BIT)
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cfg->msi.msi_data = PCIR_MSI_DATA_64BIT;
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else
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cfg->msi.msi_data = PCIR_MSI_DATA;
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cfg->msi.msi_msgnum = 1 << ((cfg->msi.msi_ctrl &
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PCIM_MSICTRL_MMC_MASK)>>1);
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default:
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break;
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}
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}
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#undef REG
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}
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/* free pcicfgregs structure and all depending data structures */
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int
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pci_freecfg(struct pci_devinfo *dinfo)
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{
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struct devlist *devlist_head;
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devlist_head = &pci_devq;
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STAILQ_REMOVE(devlist_head, dinfo, pci_devinfo, pci_links);
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free(dinfo, M_DEVBUF);
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/* increment the generation count */
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pci_generation++;
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/* we're losing one device */
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pci_numdevs--;
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return (0);
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}
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/*
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* PCI power manangement
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*/
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int
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pci_set_powerstate_method(device_t dev, device_t child, int state)
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{
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struct pci_devinfo *dinfo = device_get_ivars(child);
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pcicfgregs *cfg = &dinfo->cfg;
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uint16_t status;
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int result;
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if (cfg->pp.pp_cap != 0) {
|
|
status = PCI_READ_CONFIG(dev, child, cfg->pp.pp_status, 2)
|
|
& ~PCIM_PSTAT_DMASK;
|
|
result = 0;
|
|
switch (state) {
|
|
case PCI_POWERSTATE_D0:
|
|
status |= PCIM_PSTAT_D0;
|
|
break;
|
|
case PCI_POWERSTATE_D1:
|
|
if (cfg->pp.pp_cap & PCIM_PCAP_D1SUPP) {
|
|
status |= PCIM_PSTAT_D1;
|
|
} else {
|
|
result = EOPNOTSUPP;
|
|
}
|
|
break;
|
|
case PCI_POWERSTATE_D2:
|
|
if (cfg->pp.pp_cap & PCIM_PCAP_D2SUPP) {
|
|
status |= PCIM_PSTAT_D2;
|
|
} else {
|
|
result = EOPNOTSUPP;
|
|
}
|
|
break;
|
|
case PCI_POWERSTATE_D3:
|
|
status |= PCIM_PSTAT_D3;
|
|
break;
|
|
default:
|
|
result = EINVAL;
|
|
}
|
|
if (result == 0)
|
|
PCI_WRITE_CONFIG(dev, child, cfg->pp.pp_status, status,
|
|
2);
|
|
} else {
|
|
result = ENXIO;
|
|
}
|
|
return(result);
|
|
}
|
|
|
|
int
|
|
pci_get_powerstate_method(device_t dev, device_t child)
|
|
{
|
|
struct pci_devinfo *dinfo = device_get_ivars(child);
|
|
pcicfgregs *cfg = &dinfo->cfg;
|
|
uint16_t status;
|
|
int result;
|
|
|
|
if (cfg->pp.pp_cap != 0) {
|
|
status = PCI_READ_CONFIG(dev, child, cfg->pp.pp_status, 2);
|
|
switch (status & PCIM_PSTAT_DMASK) {
|
|
case PCIM_PSTAT_D0:
|
|
result = PCI_POWERSTATE_D0;
|
|
break;
|
|
case PCIM_PSTAT_D1:
|
|
result = PCI_POWERSTATE_D1;
|
|
break;
|
|
case PCIM_PSTAT_D2:
|
|
result = PCI_POWERSTATE_D2;
|
|
break;
|
|
case PCIM_PSTAT_D3:
|
|
result = PCI_POWERSTATE_D3;
|
|
break;
|
|
default:
|
|
result = PCI_POWERSTATE_UNKNOWN;
|
|
break;
|
|
}
|
|
} else {
|
|
/* No support, device is always at D0 */
|
|
result = PCI_POWERSTATE_D0;
|
|
}
|
|
return(result);
|
|
}
|
|
|
|
/*
|
|
* Some convenience functions for PCI device drivers.
|
|
*/
|
|
|
|
static __inline void
|
|
pci_set_command_bit(device_t dev, device_t child, uint16_t bit)
|
|
{
|
|
uint16_t command;
|
|
|
|
command = PCI_READ_CONFIG(dev, child, PCIR_COMMAND, 2);
|
|
command |= bit;
|
|
PCI_WRITE_CONFIG(dev, child, PCIR_COMMAND, command, 2);
|
|
}
|
|
|
|
static __inline void
|
|
pci_clear_command_bit(device_t dev, device_t child, uint16_t bit)
|
|
{
|
|
uint16_t command;
|
|
|
|
command = PCI_READ_CONFIG(dev, child, PCIR_COMMAND, 2);
|
|
command &= ~bit;
|
|
PCI_WRITE_CONFIG(dev, child, PCIR_COMMAND, command, 2);
|
|
}
|
|
|
|
int
|
|
pci_enable_busmaster_method(device_t dev, device_t child)
|
|
{
|
|
pci_set_command_bit(dev, child, PCIM_CMD_BUSMASTEREN);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
pci_disable_busmaster_method(device_t dev, device_t child)
|
|
{
|
|
pci_clear_command_bit(dev, child, PCIM_CMD_BUSMASTEREN);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
pci_enable_io_method(device_t dev, device_t child, int space)
|
|
{
|
|
uint16_t command;
|
|
uint16_t bit;
|
|
char *error;
|
|
|
|
bit = 0;
|
|
error = NULL;
|
|
|
|
switch(space) {
|
|
case SYS_RES_IOPORT:
|
|
bit = PCIM_CMD_PORTEN;
|
|
error = "port";
|
|
break;
|
|
case SYS_RES_MEMORY:
|
|
bit = PCIM_CMD_MEMEN;
|
|
error = "memory";
|
|
break;
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
pci_set_command_bit(dev, child, bit);
|
|
command = PCI_READ_CONFIG(dev, child, PCIR_COMMAND, 2);
|
|
if (command & bit)
|
|
return (0);
|
|
device_printf(child, "failed to enable %s mapping!\n", error);
|
|
return (ENXIO);
|
|
}
|
|
|
|
int
|
|
pci_disable_io_method(device_t dev, device_t child, int space)
|
|
{
|
|
uint16_t command;
|
|
uint16_t bit;
|
|
char *error;
|
|
|
|
bit = 0;
|
|
error = NULL;
|
|
|
|
switch(space) {
|
|
case SYS_RES_IOPORT:
|
|
bit = PCIM_CMD_PORTEN;
|
|
error = "port";
|
|
break;
|
|
case SYS_RES_MEMORY:
|
|
bit = PCIM_CMD_MEMEN;
|
|
error = "memory";
|
|
break;
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
pci_clear_command_bit(dev, child, bit);
|
|
command = PCI_READ_CONFIG(dev, child, PCIR_COMMAND, 2);
|
|
if (command & bit) {
|
|
device_printf(child, "failed to disable %s mapping!\n", error);
|
|
return (ENXIO);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* New style pci driver. Parent device is either a pci-host-bridge or a
|
|
* pci-pci-bridge. Both kinds are represented by instances of pcib.
|
|
*/
|
|
|
|
void
|
|
pci_print_verbose(struct pci_devinfo *dinfo)
|
|
{
|
|
if (bootverbose) {
|
|
pcicfgregs *cfg = &dinfo->cfg;
|
|
|
|
printf("found->\tvendor=0x%04x, dev=0x%04x, revid=0x%02x\n",
|
|
cfg->vendor, cfg->device, cfg->revid);
|
|
printf("\tbus=%d, slot=%d, func=%d\n",
|
|
cfg->bus, cfg->slot, cfg->func);
|
|
printf("\tclass=%02x-%02x-%02x, hdrtype=0x%02x, mfdev=%d\n",
|
|
cfg->baseclass, cfg->subclass, cfg->progif, cfg->hdrtype,
|
|
cfg->mfdev);
|
|
printf("\tcmdreg=0x%04x, statreg=0x%04x, cachelnsz=%d (dwords)\n",
|
|
cfg->cmdreg, cfg->statreg, cfg->cachelnsz);
|
|
printf("\tlattimer=0x%02x (%d ns), mingnt=0x%02x (%d ns), maxlat=0x%02x (%d ns)\n",
|
|
cfg->lattimer, cfg->lattimer * 30, cfg->mingnt,
|
|
cfg->mingnt * 250, cfg->maxlat, cfg->maxlat * 250);
|
|
if (cfg->intpin > 0)
|
|
printf("\tintpin=%c, irq=%d\n",
|
|
cfg->intpin +'a' -1, cfg->intline);
|
|
if (cfg->pp.pp_cap) {
|
|
uint16_t status;
|
|
|
|
status = pci_read_config(cfg->dev, cfg->pp.pp_status, 2);
|
|
printf("\tpowerspec %d supports D0%s%s D3 current D%d\n",
|
|
cfg->pp.pp_cap & PCIM_PCAP_SPEC,
|
|
cfg->pp.pp_cap & PCIM_PCAP_D1SUPP ? " D1" : "",
|
|
cfg->pp.pp_cap & PCIM_PCAP_D2SUPP ? " D2" : "",
|
|
status & PCIM_PSTAT_DMASK);
|
|
}
|
|
if (cfg->msi.msi_data) {
|
|
int ctrl;
|
|
|
|
ctrl = cfg->msi.msi_ctrl;
|
|
printf("\tMSI supports %d message%s%s%s\n",
|
|
cfg->msi.msi_msgnum,
|
|
(cfg->msi.msi_msgnum == 1) ? "" : "s",
|
|
(ctrl & PCIM_MSICTRL_64BIT) ? ", 64 bit" : "",
|
|
(ctrl & PCIM_MSICTRL_VECTOR) ? ", vector masks":"");
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
pci_porten(device_t pcib, int b, int s, int f)
|
|
{
|
|
return (PCIB_READ_CONFIG(pcib, b, s, f, PCIR_COMMAND, 2)
|
|
& PCIM_CMD_PORTEN) != 0;
|
|
}
|
|
|
|
static int
|
|
pci_memen(device_t pcib, int b, int s, int f)
|
|
{
|
|
return (PCIB_READ_CONFIG(pcib, b, s, f, PCIR_COMMAND, 2)
|
|
& PCIM_CMD_MEMEN) != 0;
|
|
}
|
|
|
|
/*
|
|
* Add a resource based on a pci map register. Return 1 if the map
|
|
* register is a 32bit map register or 2 if it is a 64bit register.
|
|
*/
|
|
static int
|
|
pci_add_map(device_t pcib, int b, int s, int f, int reg,
|
|
struct resource_list *rl)
|
|
{
|
|
uint32_t map;
|
|
uint64_t base;
|
|
uint8_t ln2size;
|
|
uint8_t ln2range;
|
|
uint32_t testval;
|
|
uint16_t cmd;
|
|
int type;
|
|
|
|
map = PCIB_READ_CONFIG(pcib, b, s, f, reg, 4);
|
|
|
|
if (map == 0 || map == 0xffffffff)
|
|
return (1); /* skip invalid entry */
|
|
|
|
PCIB_WRITE_CONFIG(pcib, b, s, f, reg, 0xffffffff, 4);
|
|
testval = PCIB_READ_CONFIG(pcib, b, s, f, reg, 4);
|
|
PCIB_WRITE_CONFIG(pcib, b, s, f, reg, map, 4);
|
|
|
|
base = pci_mapbase(map);
|
|
if (pci_maptype(map) & PCI_MAPMEM)
|
|
type = SYS_RES_MEMORY;
|
|
else
|
|
type = SYS_RES_IOPORT;
|
|
ln2size = pci_mapsize(testval);
|
|
ln2range = pci_maprange(testval);
|
|
if (ln2range == 64) {
|
|
/* Read the other half of a 64bit map register */
|
|
base |= (uint64_t) PCIB_READ_CONFIG(pcib, b, s, f, reg + 4, 4) << 32;
|
|
}
|
|
|
|
if (bootverbose) {
|
|
printf("\tmap[%02x]: type %x, range %2d, base %08x, size %2d",
|
|
reg, pci_maptype(map), ln2range,
|
|
(unsigned int) base, ln2size);
|
|
if (type == SYS_RES_IOPORT && !pci_porten(pcib, b, s, f))
|
|
printf(", port disabled\n");
|
|
else if (type == SYS_RES_MEMORY && !pci_memen(pcib, b, s, f))
|
|
printf(", memory disabled\n");
|
|
else
|
|
printf(", enabled\n");
|
|
}
|
|
|
|
/*
|
|
* This code theoretically does the right thing, but has
|
|
* undesirable side effects in some cases where
|
|
* peripherals respond oddly to having these bits
|
|
* enabled. Leave them alone by default.
|
|
*/
|
|
if (pci_enable_io_modes) {
|
|
/* Turn on resources that have been left off by a lazy BIOS */
|
|
if (type == SYS_RES_IOPORT && !pci_porten(pcib, b, s, f)) {
|
|
cmd = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_COMMAND, 2);
|
|
cmd |= PCIM_CMD_PORTEN;
|
|
PCIB_WRITE_CONFIG(pcib, b, s, f, PCIR_COMMAND, cmd, 2);
|
|
}
|
|
if (type == SYS_RES_MEMORY && !pci_memen(pcib, b, s, f)) {
|
|
cmd = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_COMMAND, 2);
|
|
cmd |= PCIM_CMD_MEMEN;
|
|
PCIB_WRITE_CONFIG(pcib, b, s, f, PCIR_COMMAND, cmd, 2);
|
|
}
|
|
} else {
|
|
if (type == SYS_RES_IOPORT && !pci_porten(pcib, b, s, f))
|
|
return (1);
|
|
if (type == SYS_RES_MEMORY && !pci_memen(pcib, b, s, f))
|
|
return (1);
|
|
}
|
|
resource_list_add(rl, type, reg, base, base + (1 << ln2size) - 1,
|
|
(1 << ln2size));
|
|
|
|
return ((ln2range == 64) ? 2 : 1);
|
|
}
|
|
|
|
static void
|
|
pci_add_resources(device_t pcib, device_t bus, device_t dev)
|
|
{
|
|
struct pci_devinfo *dinfo = device_get_ivars(dev);
|
|
pcicfgregs *cfg = &dinfo->cfg;
|
|
struct resource_list *rl = &dinfo->resources;
|
|
struct pci_quirk *q;
|
|
int b, i, irq, f, s;
|
|
|
|
b = cfg->bus;
|
|
s = cfg->slot;
|
|
f = cfg->func;
|
|
for (i = 0; i < cfg->nummaps;) {
|
|
i += pci_add_map(pcib, b, s, f, PCIR_BAR(i), rl);
|
|
}
|
|
|
|
for (q = &pci_quirks[0]; q->devid; q++) {
|
|
if (q->devid == ((cfg->device << 16) | cfg->vendor)
|
|
&& q->type == PCI_QUIRK_MAP_REG)
|
|
pci_add_map(pcib, b, s, f, q->arg1, rl);
|
|
}
|
|
|
|
if (cfg->intpin > 0 && PCI_INTERRUPT_VALID(cfg->intline)) {
|
|
#if defined(__ia64__) || (defined(__i386__) && !defined(SMP))
|
|
/*
|
|
* Try to re-route interrupts. Sometimes the BIOS or
|
|
* firmware may leave bogus values in these registers.
|
|
* If the re-route fails, then just stick with what we
|
|
* have.
|
|
*/
|
|
irq = PCI_ASSIGN_INTERRUPT(bus, dev);
|
|
if (PCI_INTERRUPT_VALID(irq)) {
|
|
pci_write_config(dev, PCIR_INTLINE, irq, 1);
|
|
cfg->intline = irq;
|
|
} else
|
|
#endif
|
|
irq = cfg->intline;
|
|
resource_list_add(rl, SYS_RES_IRQ, 0, irq, irq, 1);
|
|
}
|
|
}
|
|
|
|
void
|
|
pci_add_children(device_t dev, int busno, size_t dinfo_size)
|
|
{
|
|
#define REG(n, w) PCIB_READ_CONFIG(pcib, busno, s, f, n, w)
|
|
device_t pcib = device_get_parent(dev);
|
|
struct pci_devinfo *dinfo;
|
|
int maxslots;
|
|
int s, f, pcifunchigh;
|
|
uint8_t hdrtype;
|
|
|
|
KASSERT(dinfo_size >= sizeof(struct pci_devinfo),
|
|
("dinfo_size too small"));
|
|
maxslots = PCIB_MAXSLOTS(pcib);
|
|
for (s = 0; s <= maxslots; s++) {
|
|
pcifunchigh = 0;
|
|
f = 0;
|
|
hdrtype = REG(PCIR_HDRTYPE, 1);
|
|
if ((hdrtype & PCIM_HDRTYPE) > PCI_MAXHDRTYPE)
|
|
continue;
|
|
if (hdrtype & PCIM_MFDEV)
|
|
pcifunchigh = PCI_FUNCMAX;
|
|
for (f = 0; f <= pcifunchigh; f++) {
|
|
dinfo = pci_read_device(pcib, busno, s, f, dinfo_size);
|
|
if (dinfo != NULL) {
|
|
pci_add_child(dev, dinfo);
|
|
}
|
|
}
|
|
}
|
|
#undef REG
|
|
}
|
|
|
|
void
|
|
pci_add_child(device_t bus, struct pci_devinfo *dinfo)
|
|
{
|
|
device_t pcib;
|
|
|
|
pcib = device_get_parent(bus);
|
|
dinfo->cfg.dev = device_add_child(bus, NULL, -1);
|
|
device_set_ivars(dinfo->cfg.dev, dinfo);
|
|
pci_add_resources(pcib, bus, dinfo->cfg.dev);
|
|
pci_print_verbose(dinfo);
|
|
}
|
|
|
|
static int
|
|
pci_probe(device_t dev)
|
|
{
|
|
|
|
device_set_desc(dev, "PCI bus");
|
|
|
|
/* Allow other subclasses to override this driver. */
|
|
return (-1000);
|
|
}
|
|
|
|
static int
|
|
pci_attach(device_t dev)
|
|
{
|
|
int busno;
|
|
|
|
/*
|
|
* Since there can be multiple independantly numbered PCI
|
|
* busses on some large alpha systems, we can't use the unit
|
|
* number to decide what bus we are probing. We ask the parent
|
|
* pcib what our bus number is.
|
|
*/
|
|
busno = pcib_get_bus(dev);
|
|
if (bootverbose)
|
|
device_printf(dev, "physical bus=%d\n", busno);
|
|
|
|
pci_add_children(dev, busno, sizeof(struct pci_devinfo));
|
|
|
|
return (bus_generic_attach(dev));
|
|
}
|
|
|
|
static void
|
|
pci_load_vendor_data(void)
|
|
{
|
|
caddr_t vendordata, info;
|
|
|
|
if ((vendordata = preload_search_by_type("pci_vendor_data")) != NULL) {
|
|
info = preload_search_info(vendordata, MODINFO_ADDR);
|
|
pci_vendordata = *(char **)info;
|
|
info = preload_search_info(vendordata, MODINFO_SIZE);
|
|
pci_vendordata_size = *(size_t *)info;
|
|
/* terminate the database */
|
|
pci_vendordata[pci_vendordata_size] = '\n';
|
|
}
|
|
}
|
|
|
|
int
|
|
pci_print_child(device_t dev, device_t child)
|
|
{
|
|
struct pci_devinfo *dinfo;
|
|
struct resource_list *rl;
|
|
int retval = 0;
|
|
|
|
dinfo = device_get_ivars(child);
|
|
rl = &dinfo->resources;
|
|
|
|
retval += bus_print_child_header(dev, child);
|
|
|
|
retval += resource_list_print_type(rl, "port", SYS_RES_IOPORT, "%#lx");
|
|
retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
|
|
retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
|
|
if (device_get_flags(dev))
|
|
retval += printf(" flags %#x", device_get_flags(dev));
|
|
|
|
retval += printf(" at device %d.%d", pci_get_slot(child),
|
|
pci_get_function(child));
|
|
|
|
retval += bus_print_child_footer(dev, child);
|
|
|
|
return (retval);
|
|
}
|
|
|
|
static struct
|
|
{
|
|
int class;
|
|
int subclass;
|
|
char *desc;
|
|
} pci_nomatch_tab[] = {
|
|
{PCIC_OLD, -1, "old"},
|
|
{PCIC_OLD, PCIS_OLD_NONVGA, "non-VGA display device"},
|
|
{PCIC_OLD, PCIS_OLD_VGA, "VGA-compatible display device"},
|
|
{PCIC_STORAGE, -1, "mass storage"},
|
|
{PCIC_STORAGE, PCIS_STORAGE_SCSI, "SCSI"},
|
|
{PCIC_STORAGE, PCIS_STORAGE_IDE, "ATA"},
|
|
{PCIC_STORAGE, PCIS_STORAGE_FLOPPY, "floppy disk"},
|
|
{PCIC_STORAGE, PCIS_STORAGE_IPI, "IPI"},
|
|
{PCIC_STORAGE, PCIS_STORAGE_RAID, "RAID"},
|
|
{PCIC_NETWORK, -1, "network"},
|
|
{PCIC_NETWORK, PCIS_NETWORK_ETHERNET, "ethernet"},
|
|
{PCIC_NETWORK, PCIS_NETWORK_TOKENRING, "token ring"},
|
|
{PCIC_NETWORK, PCIS_NETWORK_FDDI, "fddi"},
|
|
{PCIC_NETWORK, PCIS_NETWORK_ATM, "ATM"},
|
|
{PCIC_DISPLAY, -1, "display"},
|
|
{PCIC_DISPLAY, PCIS_DISPLAY_VGA, "VGA"},
|
|
{PCIC_DISPLAY, PCIS_DISPLAY_XGA, "XGA"},
|
|
{PCIC_MULTIMEDIA, -1, "multimedia"},
|
|
{PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_VIDEO, "video"},
|
|
{PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_AUDIO, "audio"},
|
|
{PCIC_MEMORY, -1, "memory"},
|
|
{PCIC_MEMORY, PCIS_MEMORY_RAM, "RAM"},
|
|
{PCIC_MEMORY, PCIS_MEMORY_FLASH, "flash"},
|
|
{PCIC_BRIDGE, -1, "bridge"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_HOST, "HOST-PCI"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_ISA, "PCI-ISA"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_EISA, "PCI-EISA"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_MCA, "PCI-MCA"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_PCI, "PCI-PCI"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_PCMCIA, "PCI-PCMCIA"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_NUBUS, "PCI-NuBus"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_CARDBUS, "PCI-CardBus"},
|
|
{PCIC_BRIDGE, PCIS_BRIDGE_OTHER, "PCI-unknown"},
|
|
{PCIC_SIMPLECOMM, -1, "simple comms"},
|
|
{PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_UART, "UART"}, /* could detect 16550 */
|
|
{PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_PAR, "parallel port"},
|
|
{PCIC_BASEPERIPH, -1, "base peripheral"},
|
|
{PCIC_BASEPERIPH, PCIS_BASEPERIPH_PIC, "interrupt controller"},
|
|
{PCIC_BASEPERIPH, PCIS_BASEPERIPH_DMA, "DMA controller"},
|
|
{PCIC_BASEPERIPH, PCIS_BASEPERIPH_TIMER, "timer"},
|
|
{PCIC_BASEPERIPH, PCIS_BASEPERIPH_RTC, "realtime clock"},
|
|
{PCIC_INPUTDEV, -1, "input device"},
|
|
{PCIC_INPUTDEV, PCIS_INPUTDEV_KEYBOARD, "keyboard"},
|
|
{PCIC_INPUTDEV, PCIS_INPUTDEV_DIGITIZER,"digitizer"},
|
|
{PCIC_INPUTDEV, PCIS_INPUTDEV_MOUSE, "mouse"},
|
|
{PCIC_DOCKING, -1, "docking station"},
|
|
{PCIC_PROCESSOR, -1, "processor"},
|
|
{PCIC_SERIALBUS, -1, "serial bus"},
|
|
{PCIC_SERIALBUS, PCIS_SERIALBUS_FW, "FireWire"},
|
|
{PCIC_SERIALBUS, PCIS_SERIALBUS_ACCESS, "AccessBus"},
|
|
{PCIC_SERIALBUS, PCIS_SERIALBUS_SSA, "SSA"},
|
|
{PCIC_SERIALBUS, PCIS_SERIALBUS_USB, "USB"},
|
|
{PCIC_SERIALBUS, PCIS_SERIALBUS_FC, "Fibre Channel"},
|
|
{PCIC_SERIALBUS, PCIS_SERIALBUS_SMBUS, "SMBus"},
|
|
{0, 0, NULL}
|
|
};
|
|
|
|
void
|
|
pci_probe_nomatch(device_t dev, device_t child)
|
|
{
|
|
int i;
|
|
char *cp, *scp, *device;
|
|
|
|
/*
|
|
* Look for a listing for this device in a loaded device database.
|
|
*/
|
|
if ((device = pci_describe_device(child)) != NULL) {
|
|
device_printf(dev, "<%s>", device);
|
|
free(device, M_DEVBUF);
|
|
} else {
|
|
/*
|
|
* Scan the class/subclass descriptions for a general
|
|
* description.
|
|
*/
|
|
cp = "unknown";
|
|
scp = NULL;
|
|
for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) {
|
|
if (pci_nomatch_tab[i].class == pci_get_class(child)) {
|
|
if (pci_nomatch_tab[i].subclass == -1) {
|
|
cp = pci_nomatch_tab[i].desc;
|
|
} else if (pci_nomatch_tab[i].subclass ==
|
|
pci_get_subclass(child)) {
|
|
scp = pci_nomatch_tab[i].desc;
|
|
}
|
|
}
|
|
}
|
|
device_printf(dev, "<%s%s%s>",
|
|
cp ? cp : "",
|
|
((cp != NULL) && (scp != NULL)) ? ", " : "",
|
|
scp ? scp : "");
|
|
}
|
|
printf(" at device %d.%d (no driver attached)\n",
|
|
pci_get_slot(child), pci_get_function(child));
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Parse the PCI device database, if loaded, and return a pointer to a
|
|
* description of the device.
|
|
*
|
|
* The database is flat text formatted as follows:
|
|
*
|
|
* Any line not in a valid format is ignored.
|
|
* Lines are terminated with newline '\n' characters.
|
|
*
|
|
* A VENDOR line consists of the 4 digit (hex) vendor code, a TAB, then
|
|
* the vendor name.
|
|
*
|
|
* A DEVICE line is entered immediately below the corresponding VENDOR ID.
|
|
* - devices cannot be listed without a corresponding VENDOR line.
|
|
* A DEVICE line consists of a TAB, the 4 digit (hex) device code,
|
|
* another TAB, then the device name.
|
|
*/
|
|
|
|
/*
|
|
* Assuming (ptr) points to the beginning of a line in the database,
|
|
* return the vendor or device and description of the next entry.
|
|
* The value of (vendor) or (device) inappropriate for the entry type
|
|
* is set to -1. Returns nonzero at the end of the database.
|
|
*
|
|
* Note that this is slightly unrobust in the face of corrupt data;
|
|
* we attempt to safeguard against this by spamming the end of the
|
|
* database with a newline when we initialise.
|
|
*/
|
|
static int
|
|
pci_describe_parse_line(char **ptr, int *vendor, int *device, char **desc)
|
|
{
|
|
char *cp = *ptr;
|
|
int left;
|
|
|
|
*device = -1;
|
|
*vendor = -1;
|
|
**desc = '\0';
|
|
for (;;) {
|
|
left = pci_vendordata_size - (cp - pci_vendordata);
|
|
if (left <= 0) {
|
|
*ptr = cp;
|
|
return(1);
|
|
}
|
|
|
|
/* vendor entry? */
|
|
if (*cp != '\t' &&
|
|
sscanf(cp, "%x\t%80[^\n]", vendor, *desc) == 2)
|
|
break;
|
|
/* device entry? */
|
|
if (*cp == '\t' &&
|
|
sscanf(cp, "%x\t%80[^\n]", device, *desc) == 2)
|
|
break;
|
|
|
|
/* skip to next line */
|
|
while (*cp != '\n' && left > 0) {
|
|
cp++;
|
|
left--;
|
|
}
|
|
if (*cp == '\n') {
|
|
cp++;
|
|
left--;
|
|
}
|
|
}
|
|
/* skip to next line */
|
|
while (*cp != '\n' && left > 0) {
|
|
cp++;
|
|
left--;
|
|
}
|
|
if (*cp == '\n' && left > 0)
|
|
cp++;
|
|
*ptr = cp;
|
|
return(0);
|
|
}
|
|
|
|
static char *
|
|
pci_describe_device(device_t dev)
|
|
{
|
|
int vendor, device;
|
|
char *desc, *vp, *dp, *line;
|
|
|
|
desc = vp = dp = NULL;
|
|
|
|
/*
|
|
* If we have no vendor data, we can't do anything.
|
|
*/
|
|
if (pci_vendordata == NULL)
|
|
goto out;
|
|
|
|
/*
|
|
* Scan the vendor data looking for this device
|
|
*/
|
|
line = pci_vendordata;
|
|
if ((vp = malloc(80, M_DEVBUF, M_NOWAIT)) == NULL)
|
|
goto out;
|
|
for (;;) {
|
|
if (pci_describe_parse_line(&line, &vendor, &device, &vp))
|
|
goto out;
|
|
if (vendor == pci_get_vendor(dev))
|
|
break;
|
|
}
|
|
if ((dp = malloc(80, M_DEVBUF, M_NOWAIT)) == NULL)
|
|
goto out;
|
|
for (;;) {
|
|
if (pci_describe_parse_line(&line, &vendor, &device, &dp)) {
|
|
*dp = 0;
|
|
break;
|
|
}
|
|
if (vendor != -1) {
|
|
*dp = 0;
|
|
break;
|
|
}
|
|
if (device == pci_get_device(dev))
|
|
break;
|
|
}
|
|
if (dp[0] == '\0')
|
|
snprintf(dp, 80, "0x%x", pci_get_device(dev));
|
|
if ((desc = malloc(strlen(vp) + strlen(dp) + 3, M_DEVBUF, M_NOWAIT)) !=
|
|
NULL)
|
|
sprintf(desc, "%s, %s", vp, dp);
|
|
out:
|
|
if (vp != NULL)
|
|
free(vp, M_DEVBUF);
|
|
if (dp != NULL)
|
|
free(dp, M_DEVBUF);
|
|
return(desc);
|
|
}
|
|
|
|
int
|
|
pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
|
|
{
|
|
struct pci_devinfo *dinfo;
|
|
pcicfgregs *cfg;
|
|
|
|
dinfo = device_get_ivars(child);
|
|
cfg = &dinfo->cfg;
|
|
|
|
switch (which) {
|
|
case PCI_IVAR_ETHADDR:
|
|
/*
|
|
* The generic accessor doesn't deal with failure, so
|
|
* we set the return value, then return an error.
|
|
*/
|
|
*((uint8_t **) result) = NULL;
|
|
return (EINVAL);
|
|
case PCI_IVAR_SUBVENDOR:
|
|
*result = cfg->subvendor;
|
|
break;
|
|
case PCI_IVAR_SUBDEVICE:
|
|
*result = cfg->subdevice;
|
|
break;
|
|
case PCI_IVAR_VENDOR:
|
|
*result = cfg->vendor;
|
|
break;
|
|
case PCI_IVAR_DEVICE:
|
|
*result = cfg->device;
|
|
break;
|
|
case PCI_IVAR_DEVID:
|
|
*result = (cfg->device << 16) | cfg->vendor;
|
|
break;
|
|
case PCI_IVAR_CLASS:
|
|
*result = cfg->baseclass;
|
|
break;
|
|
case PCI_IVAR_SUBCLASS:
|
|
*result = cfg->subclass;
|
|
break;
|
|
case PCI_IVAR_PROGIF:
|
|
*result = cfg->progif;
|
|
break;
|
|
case PCI_IVAR_REVID:
|
|
*result = cfg->revid;
|
|
break;
|
|
case PCI_IVAR_INTPIN:
|
|
*result = cfg->intpin;
|
|
break;
|
|
case PCI_IVAR_IRQ:
|
|
*result = cfg->intline;
|
|
break;
|
|
case PCI_IVAR_BUS:
|
|
*result = cfg->bus;
|
|
break;
|
|
case PCI_IVAR_SLOT:
|
|
*result = cfg->slot;
|
|
break;
|
|
case PCI_IVAR_FUNCTION:
|
|
*result = cfg->func;
|
|
break;
|
|
default:
|
|
return (ENOENT);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
pci_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
|
|
{
|
|
struct pci_devinfo *dinfo;
|
|
|
|
dinfo = device_get_ivars(child);
|
|
|
|
switch (which) {
|
|
case PCI_IVAR_INTPIN:
|
|
dinfo->cfg.intpin = value;
|
|
return (0);
|
|
case PCI_IVAR_ETHADDR:
|
|
case PCI_IVAR_SUBVENDOR:
|
|
case PCI_IVAR_SUBDEVICE:
|
|
case PCI_IVAR_VENDOR:
|
|
case PCI_IVAR_DEVICE:
|
|
case PCI_IVAR_DEVID:
|
|
case PCI_IVAR_CLASS:
|
|
case PCI_IVAR_SUBCLASS:
|
|
case PCI_IVAR_PROGIF:
|
|
case PCI_IVAR_REVID:
|
|
case PCI_IVAR_IRQ:
|
|
case PCI_IVAR_BUS:
|
|
case PCI_IVAR_SLOT:
|
|
case PCI_IVAR_FUNCTION:
|
|
return (EINVAL); /* disallow for now */
|
|
|
|
default:
|
|
return (ENOENT);
|
|
}
|
|
}
|
|
|
|
|
|
#include "opt_ddb.h"
|
|
#ifdef DDB
|
|
#include <ddb/ddb.h>
|
|
#include <sys/cons.h>
|
|
|
|
/*
|
|
* List resources based on pci map registers, used for within ddb
|
|
*/
|
|
|
|
DB_SHOW_COMMAND(pciregs, db_pci_dump)
|
|
{
|
|
struct pci_devinfo *dinfo;
|
|
struct devlist *devlist_head;
|
|
struct pci_conf *p;
|
|
const char *name;
|
|
int i, error, none_count, quit;
|
|
|
|
none_count = 0;
|
|
/* get the head of the device queue */
|
|
devlist_head = &pci_devq;
|
|
|
|
/*
|
|
* Go through the list of devices and print out devices
|
|
*/
|
|
db_setup_paging(db_simple_pager, &quit, DB_LINES_PER_PAGE);
|
|
for (error = 0, i = 0, quit = 0,
|
|
dinfo = STAILQ_FIRST(devlist_head);
|
|
(dinfo != NULL) && (error == 0) && (i < pci_numdevs) && !quit;
|
|
dinfo = STAILQ_NEXT(dinfo, pci_links), i++) {
|
|
|
|
/* Populate pd_name and pd_unit */
|
|
name = NULL;
|
|
if (dinfo->cfg.dev)
|
|
name = device_get_name(dinfo->cfg.dev);
|
|
|
|
p = &dinfo->conf;
|
|
db_printf("%s%d@pci%d:%d:%d:\tclass=0x%06x card=0x%08x "
|
|
"chip=0x%08x rev=0x%02x hdr=0x%02x\n",
|
|
(name && *name) ? name : "none",
|
|
(name && *name) ? (int)device_get_unit(dinfo->cfg.dev) :
|
|
none_count++,
|
|
p->pc_sel.pc_bus, p->pc_sel.pc_dev,
|
|
p->pc_sel.pc_func, (p->pc_class << 16) |
|
|
(p->pc_subclass << 8) | p->pc_progif,
|
|
(p->pc_subdevice << 16) | p->pc_subvendor,
|
|
(p->pc_device << 16) | p->pc_vendor,
|
|
p->pc_revid, p->pc_hdr);
|
|
}
|
|
}
|
|
#endif /* DDB */
|
|
|
|
struct resource *
|
|
pci_alloc_resource(device_t dev, device_t child, int type, int *rid,
|
|
u_long start, u_long end, u_long count, u_int flags)
|
|
{
|
|
struct pci_devinfo *dinfo = device_get_ivars(child);
|
|
struct resource_list *rl = &dinfo->resources;
|
|
pcicfgregs *cfg = &dinfo->cfg;
|
|
|
|
/*
|
|
* Perform lazy resource allocation
|
|
*
|
|
* XXX add support here for SYS_RES_IOPORT and SYS_RES_MEMORY
|
|
*/
|
|
if (device_get_parent(child) == dev) {
|
|
switch (type) {
|
|
case SYS_RES_IRQ:
|
|
/*
|
|
* If the child device doesn't have an
|
|
* interrupt routed and is deserving of an
|
|
* interrupt, try to assign it one.
|
|
*/
|
|
if (!PCI_INTERRUPT_VALID(cfg->intline) &&
|
|
(cfg->intpin != 0)) {
|
|
cfg->intline = PCI_ASSIGN_INTERRUPT(dev, child);
|
|
if (PCI_INTERRUPT_VALID(cfg->intline)) {
|
|
pci_write_config(child, PCIR_INTLINE,
|
|
cfg->intline, 1);
|
|
resource_list_add(rl, SYS_RES_IRQ, 0,
|
|
cfg->intline, cfg->intline, 1);
|
|
}
|
|
}
|
|
break;
|
|
case SYS_RES_IOPORT:
|
|
case SYS_RES_MEMORY:
|
|
if (*rid < PCIR_BAR(cfg->nummaps)) {
|
|
/*
|
|
* Enable the I/O mode. We should
|
|
* also be allocating resources
|
|
* too. XXX
|
|
*/
|
|
if (PCI_ENABLE_IO(dev, child, type))
|
|
return (NULL);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return (resource_list_alloc(rl, dev, child, type, rid,
|
|
start, end, count, flags));
|
|
}
|
|
|
|
void
|
|
pci_delete_resource(device_t dev, device_t child, int type, int rid)
|
|
{
|
|
struct pci_devinfo *dinfo;
|
|
struct resource_list *rl;
|
|
struct resource_list_entry *rle;
|
|
|
|
if (device_get_parent(child) != dev)
|
|
return;
|
|
|
|
dinfo = device_get_ivars(child);
|
|
rl = &dinfo->resources;
|
|
rle = resource_list_find(rl, type, rid);
|
|
if (rle) {
|
|
if (rle->res) {
|
|
if (rman_get_device(rle->res) != dev ||
|
|
rman_get_flags(rle->res) & RF_ACTIVE) {
|
|
device_printf(dev, "delete_resource: "
|
|
"Resource still owned by child, oops. "
|
|
"(type=%d, rid=%d, addr=%lx)\n",
|
|
rle->type, rle->rid,
|
|
rman_get_start(rle->res));
|
|
return;
|
|
}
|
|
bus_release_resource(dev, type, rid, rle->res);
|
|
}
|
|
resource_list_delete(rl, type, rid);
|
|
}
|
|
/*
|
|
* Why do we turn off the PCI configuration BAR when we delete a
|
|
* resource? -- imp
|
|
*/
|
|
pci_write_config(child, rid, 0, 4);
|
|
BUS_DELETE_RESOURCE(device_get_parent(dev), child, type, rid);
|
|
}
|
|
|
|
struct resource_list *
|
|
pci_get_resource_list (device_t dev, device_t child)
|
|
{
|
|
struct pci_devinfo * dinfo = device_get_ivars(child);
|
|
struct resource_list * rl = &dinfo->resources;
|
|
|
|
if (!rl)
|
|
return (NULL);
|
|
|
|
return (rl);
|
|
}
|
|
|
|
uint32_t
|
|
pci_read_config_method(device_t dev, device_t child, int reg, int width)
|
|
{
|
|
struct pci_devinfo *dinfo = device_get_ivars(child);
|
|
pcicfgregs *cfg = &dinfo->cfg;
|
|
|
|
return (PCIB_READ_CONFIG(device_get_parent(dev),
|
|
cfg->bus, cfg->slot, cfg->func, reg, width));
|
|
}
|
|
|
|
void
|
|
pci_write_config_method(device_t dev, device_t child, int reg,
|
|
uint32_t val, int width)
|
|
{
|
|
struct pci_devinfo *dinfo = device_get_ivars(child);
|
|
pcicfgregs *cfg = &dinfo->cfg;
|
|
|
|
PCIB_WRITE_CONFIG(device_get_parent(dev),
|
|
cfg->bus, cfg->slot, cfg->func, reg, val, width);
|
|
}
|
|
|
|
int
|
|
pci_child_location_str_method(device_t cbdev, device_t child, char *buf,
|
|
size_t buflen)
|
|
{
|
|
struct pci_devinfo *dinfo;
|
|
|
|
dinfo = device_get_ivars(child);
|
|
snprintf(buf, buflen, "slot=%d function=%d", pci_get_slot(child),
|
|
pci_get_function(child));
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
pci_child_pnpinfo_str_method(device_t cbdev, device_t child, char *buf,
|
|
size_t buflen)
|
|
{
|
|
struct pci_devinfo *dinfo;
|
|
pcicfgregs *cfg;
|
|
|
|
dinfo = device_get_ivars(child);
|
|
cfg = &dinfo->cfg;
|
|
snprintf(buf, buflen, "vendor=0x%04x device=0x%04x subvendor=0x%04x "
|
|
"subdevice=0x%04x class=0x%02x%02x%02x", cfg->vendor, cfg->device,
|
|
cfg->subvendor, cfg->subdevice, cfg->baseclass, cfg->subclass,
|
|
cfg->progif);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
pci_assign_interrupt_method(device_t dev, device_t child)
|
|
{
|
|
struct pci_devinfo *dinfo = device_get_ivars(child);
|
|
pcicfgregs *cfg = &dinfo->cfg;
|
|
|
|
return (PCIB_ROUTE_INTERRUPT(device_get_parent(dev), child,
|
|
cfg->intpin));
|
|
}
|
|
|
|
static int
|
|
pci_modevent(module_t mod, int what, void *arg)
|
|
{
|
|
static dev_t pci_cdev;
|
|
|
|
switch (what) {
|
|
case MOD_LOAD:
|
|
STAILQ_INIT(&pci_devq);
|
|
pci_generation = 0;
|
|
pci_cdev = make_dev(&pcicdev, 0, UID_ROOT, GID_WHEEL, 0644,
|
|
"pci");
|
|
pci_load_vendor_data();
|
|
break;
|
|
|
|
case MOD_UNLOAD:
|
|
destroy_dev(pci_cdev);
|
|
break;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
pci_resume(device_t dev)
|
|
{
|
|
int numdevs;
|
|
int i;
|
|
device_t *children;
|
|
device_t child;
|
|
struct pci_devinfo *dinfo;
|
|
pcicfgregs *cfg;
|
|
|
|
device_get_children(dev, &children, &numdevs);
|
|
|
|
for (i = 0; i < numdevs; i++) {
|
|
child = children[i];
|
|
|
|
dinfo = device_get_ivars(child);
|
|
cfg = &dinfo->cfg;
|
|
if (cfg->intpin > 0 && PCI_INTERRUPT_VALID(cfg->intline)) {
|
|
cfg->intline = PCI_ASSIGN_INTERRUPT(dev, child);
|
|
if (PCI_INTERRUPT_VALID(cfg->intline)) {
|
|
pci_write_config(child, PCIR_INTLINE,
|
|
cfg->intline, 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
free(children, M_TEMP);
|
|
|
|
return (bus_generic_resume(dev));
|
|
}
|
|
|