Author: jhb
Date: Fri Jun 24 21:39:38 2011
New Revision: 223520
URL: http://svn.freebsd.org/changeset/base/223520
Log:
Split out host_pcib_get_busno() from the generic PCI-PCI bridge driver to
start a new file that will hold utility APIs used by various Host-PCI
bridge drivers and drivers that provide PCI domains.
Added:
head/sys/dev/pci/pci_subr.c
- copied, changed from r223482, head/sys/dev/pci/pci_pci.c
Modified:
head/sys/conf/files
head/sys/dev/pci/pci_pci.c
Modified: head/sys/conf/files
==============================================================================
--- head/sys/conf/files Fri Jun 24 21:32:03 2011 (r223519)
+++ head/sys/conf/files Fri Jun 24 21:39:38 2011 (r223520)
@@ -1552,6 +1552,7 @@ dev/pci/isa_pci.c optional pci isa
dev/pci/pci.c optional pci
dev/pci/pci_if.m standard
dev/pci/pci_pci.c optional pci
+dev/pci/pci_subr.c optional pci
dev/pci/pci_user.c optional pci
dev/pci/pcib_if.m standard
dev/pci/vga_pci.c optional pci
Modified: head/sys/dev/pci/pci_pci.c
==============================================================================
--- head/sys/dev/pci/pci_pci.c Fri Jun 24 21:32:03 2011 (r223519)
+++ head/sys/dev/pci/pci_pci.c Fri Jun 24 21:39:38 2011 (r223520)
@@ -38,16 +38,12 @@ __FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/kernel.h>
-#include <sys/libkern.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/rman.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
-#include <machine/bus.h>
-#include <machine/resource.h>
-
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pci_private.h>
@@ -1432,91 +1428,3 @@ pcib_power_for_sleep(device_t pcib, devi
bus = device_get_parent(pcib);
return (PCIB_POWER_FOR_SLEEP(bus, dev, pstate));
}
-
-/*
- * Try to read the bus number of a host-PCI bridge using appropriate config
- * registers.
- */
-int
-host_pcib_get_busno(pci_read_config_fn read_config, int bus, int slot, int
func,
- uint8_t *busnum)
-{
- uint32_t id;
-
- id = read_config(bus, slot, func, PCIR_DEVVENDOR, 4);
- if (id == 0xffffffff)
- return (0);
-
- switch (id) {
- case 0x12258086:
- /* Intel 824?? */
- /* XXX This is a guess */
- /* *busnum = read_config(bus, slot, func, 0x41, 1); */
- *busnum = bus;
- break;
- case 0x84c48086:
- /* Intel 82454KX/GX (Orion) */
- *busnum = read_config(bus, slot, func, 0x4a, 1);
- break;
- case 0x84ca8086:
- /*
- * For the 450nx chipset, there is a whole bundle of
- * things pretending to be host bridges. The MIOC will
- * be seen first and isn't really a pci bridge (the
- * actual busses are attached to the PXB's). We need to
- * read the registers of the MIOC to figure out the
- * bus numbers for the PXB channels.
- *
- * Since the MIOC doesn't have a pci bus attached, we
- * pretend it wasn't there.
- */
- return (0);
- case 0x84cb8086:
- switch (slot) {
- case 0x12:
- /* Intel 82454NX PXB#0, Bus#A */
- *busnum = read_config(bus, 0x10, func, 0xd0, 1);
- break;
- case 0x13:
- /* Intel 82454NX PXB#0, Bus#B */
- *busnum = read_config(bus, 0x10, func, 0xd1, 1) + 1;
- break;
- case 0x14:
- /* Intel 82454NX PXB#1, Bus#A */
- *busnum = read_config(bus, 0x10, func, 0xd3, 1);
- break;
- case 0x15:
- /* Intel 82454NX PXB#1, Bus#B */
- *busnum = read_config(bus, 0x10, func, 0xd4, 1) + 1;
- break;
- }
- break;
-
- /* ServerWorks -- vendor 0x1166 */
- case 0x00051166:
- case 0x00061166:
- case 0x00081166:
- case 0x00091166:
- case 0x00101166:
- case 0x00111166:
- case 0x00171166:
- case 0x01011166:
- case 0x010f1014:
- case 0x01101166:
- case 0x02011166:
- case 0x02251166:
- case 0x03021014:
- *busnum = read_config(bus, slot, func, 0x44, 1);
- break;
-
- /* Compaq/HP -- vendor 0x0e11 */
- case 0x60100e11:
- *busnum = read_config(bus, slot, func, 0xc8, 1);
- break;
- default:
- /* Don't know how to read bus number. */
- return 0;
- }
-
- return 1;
-}
Copied and modified: head/sys/dev/pci/pci_subr.c (from r223482,
head/sys/dev/pci/pci_pci.c)
==============================================================================
--- head/sys/dev/pci/pci_pci.c Thu Jun 23 17:42:27 2011 (r223482, copy
source)
+++ head/sys/dev/pci/pci_subr.c Fri Jun 24 21:39:38 2011 (r223520)
@@ -1,7 +1,6 @@
/*-
- * Copyright (c) 1994,1995 Stefan Esser, Wolfgang StanglMeier
- * Copyright (c) 2000 Michael Smith <msm...@freebsd.org>
- * Copyright (c) 2000 BSDi
+ * Copyright (c) 2011 Advanced Computing Technologies LLC
+ * Written by: John H. Baldwin <j...@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -12,8 +11,6 @@
* 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.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
@@ -32,1407 +29,18 @@
__FBSDID("$FreeBSD$");
/*
- * PCI:PCI bridge support.
+ * Support APIs for Host to PCI bridge drivers and drivers that
+ * provide PCI domains.
*/
-#include <sys/param.h>
+#include <sys/types.h>
#include <sys/bus.h>
-#include <sys/kernel.h>
-#include <sys/libkern.h>
-#include <sys/malloc.h>
-#include <sys/module.h>
#include <sys/rman.h>
-#include <sys/sysctl.h>
-#include <sys/systm.h>
-#include <machine/bus.h>
-#include <machine/resource.h>
-
-#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
-#include <dev/pci/pci_private.h>
+#include <dev/pci/pcivar.h>
#include <dev/pci/pcib_private.h>
-#include "pcib_if.h"
-
-static int pcib_probe(device_t dev);
-static int pcib_suspend(device_t dev);
-static int pcib_resume(device_t dev);
-static int pcib_power_for_sleep(device_t pcib, device_t dev,
- int *pstate);
-
-static device_method_t pcib_methods[] = {
- /* Device interface */
- DEVMETHOD(device_probe, pcib_probe),
- DEVMETHOD(device_attach, pcib_attach),
- DEVMETHOD(device_detach, bus_generic_detach),
- DEVMETHOD(device_shutdown, bus_generic_shutdown),
- DEVMETHOD(device_suspend, pcib_suspend),
- DEVMETHOD(device_resume, pcib_resume),
-
- /* Bus interface */
- DEVMETHOD(bus_print_child, bus_generic_print_child),
- DEVMETHOD(bus_read_ivar, pcib_read_ivar),
- DEVMETHOD(bus_write_ivar, pcib_write_ivar),
- DEVMETHOD(bus_alloc_resource, pcib_alloc_resource),
-#ifdef NEW_PCIB
- DEVMETHOD(bus_adjust_resource, pcib_adjust_resource),
- DEVMETHOD(bus_release_resource, pcib_release_resource),
-#else
- DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource),
- DEVMETHOD(bus_release_resource, bus_generic_release_resource),
-#endif
- DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
- DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
- DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
- DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
-
- /* pcib interface */
- DEVMETHOD(pcib_maxslots, pcib_maxslots),
- DEVMETHOD(pcib_read_config, pcib_read_config),
- DEVMETHOD(pcib_write_config, pcib_write_config),
- DEVMETHOD(pcib_route_interrupt, pcib_route_interrupt),
- DEVMETHOD(pcib_alloc_msi, pcib_alloc_msi),
- DEVMETHOD(pcib_release_msi, pcib_release_msi),
- DEVMETHOD(pcib_alloc_msix, pcib_alloc_msix),
- DEVMETHOD(pcib_release_msix, pcib_release_msix),
- DEVMETHOD(pcib_map_msi, pcib_map_msi),
- DEVMETHOD(pcib_power_for_sleep, pcib_power_for_sleep),
-
- { 0, 0 }
-};
-
-static devclass_t pcib_devclass;
-
-DEFINE_CLASS_0(pcib, pcib_driver, pcib_methods, sizeof(struct pcib_softc));
-DRIVER_MODULE(pcib, pci, pcib_driver, pcib_devclass, 0, 0);
-
-#ifdef NEW_PCIB
-/*
- * XXX Todo:
- * - properly handle the ISA enable bit. If it is set, we should change
- * the behavior of the I/O window resource and rman to not allocate the
- * blocked ranges (upper 768 bytes of each 1K in the first 64k of the
- * I/O port address space).
- */
-
-/*
- * Is a resource from a child device sub-allocated from one of our
- * resource managers?
- */
-static int
-pcib_is_resource_managed(struct pcib_softc *sc, int type, struct resource *r)
-{
-
- switch (type) {
- case SYS_RES_IOPORT:
- return (rman_is_region_manager(r, &sc->io.rman));
- case SYS_RES_MEMORY:
- /* Prefetchable resources may live in either memory rman. */
- if (rman_get_flags(r) & RF_PREFETCHABLE &&
- rman_is_region_manager(r, &sc->pmem.rman))
- return (1);
- return (rman_is_region_manager(r, &sc->mem.rman));
- }
- return (0);
-}
-
-static int
-pcib_is_window_open(struct pcib_window *pw)
-{
-
- return (pw->valid && pw->base < pw->limit);
-}
-
-/*
- * XXX: If RF_ACTIVE did not also imply allocating a bus space tag and
- * handle for the resource, we could pass RF_ACTIVE up to the PCI bus
- * when allocating the resource windows and rely on the PCI bus driver
- * to do this for us.
- */
-static void
-pcib_activate_window(struct pcib_softc *sc, int type)
-{
-
- PCI_ENABLE_IO(device_get_parent(sc->dev), sc->dev, type);
-}
-
-static void
-pcib_write_windows(struct pcib_softc *sc, int mask)
-{
- device_t dev;
- uint32_t val;
-
- dev = sc->dev;
- if (sc->io.valid && mask & WIN_IO) {
- val = pci_read_config(dev, PCIR_IOBASEL_1, 1);
- if ((val & PCIM_BRIO_MASK) == PCIM_BRIO_32) {
- pci_write_config(dev, PCIR_IOBASEH_1,
- sc->io.base >> 16, 2);
- pci_write_config(dev, PCIR_IOLIMITH_1,
- sc->io.limit >> 16, 2);
- }
- pci_write_config(dev, PCIR_IOBASEL_1, sc->io.base >> 8, 1);
- pci_write_config(dev, PCIR_IOLIMITL_1, sc->io.limit >> 8, 1);
- }
-
- if (mask & WIN_MEM) {
- pci_write_config(dev, PCIR_MEMBASE_1, sc->mem.base >> 16, 2);
- pci_write_config(dev, PCIR_MEMLIMIT_1, sc->mem.limit >> 16, 2);
- }
-
- if (sc->pmem.valid && mask & WIN_PMEM) {
- val = pci_read_config(dev, PCIR_PMBASEL_1, 2);
- if ((val & PCIM_BRPM_MASK) == PCIM_BRPM_64) {
- pci_write_config(dev, PCIR_PMBASEH_1,
- sc->pmem.base >> 32, 4);
- pci_write_config(dev, PCIR_PMLIMITH_1,
- sc->pmem.limit >> 32, 4);
- }
- pci_write_config(dev, PCIR_PMBASEL_1, sc->pmem.base >> 16, 2);
- pci_write_config(dev, PCIR_PMLIMITL_1, sc->pmem.limit >> 16, 2);
- }
-}
-
-static void
-pcib_alloc_window(struct pcib_softc *sc, struct pcib_window *w, int type,
- int flags, pci_addr_t max_address)
-{
- char buf[64];
- int error, rid;
-
- if (max_address != (u_long)max_address)
- max_address = ~0ul;
- w->rman.rm_start = 0;
- w->rman.rm_end = max_address;
- w->rman.rm_type = RMAN_ARRAY;
- snprintf(buf, sizeof(buf), "%s %s window",
- device_get_nameunit(sc->dev), w->name);
- w->rman.rm_descr = strdup(buf, M_DEVBUF);
- error = rman_init(&w->rman);
- if (error)
- panic("Failed to initialize %s %s rman",
- device_get_nameunit(sc->dev), w->name);
-
- if (!pcib_is_window_open(w))
- return;
-
- if (w->base > max_address || w->limit > max_address) {
- device_printf(sc->dev,
- "initial %s window has too many bits, ignoring\n", w->name);
- return;
- }
- rid = w->reg;
- w->res = bus_alloc_resource(sc->dev, type, &rid, w->base, w->limit,
- w->limit - w->base + 1, flags);
- if (w->res == NULL) {
- device_printf(sc->dev,
- "failed to allocate initial %s window: %#jx-%#jx\n",
- w->name, (uintmax_t)w->base, (uintmax_t)w->limit);
- w->base = max_address;
- w->limit = 0;
- pcib_write_windows(sc, w->mask);
- return;
- }
- pcib_activate_window(sc, type);
-
- error = rman_manage_region(&w->rman, rman_get_start(w->res),
- rman_get_end(w->res));
- if (error)
- panic("Failed to initialize rman with resource");
-}
-
-/*
- * Initialize I/O windows.
- */
-static void
-pcib_probe_windows(struct pcib_softc *sc)
-{
- pci_addr_t max;
- device_t dev;
- uint32_t val;
-
- dev = sc->dev;
-
- /* Determine if the I/O port window is implemented. */
- val = pci_read_config(dev, PCIR_IOBASEL_1, 1);
- if (val == 0) {
- /*
- * If 'val' is zero, then only 16-bits of I/O space
- * are supported.
- */
- pci_write_config(dev, PCIR_IOBASEL_1, 0xff, 1);
- if (pci_read_config(dev, PCIR_IOBASEL_1, 1) != 0) {
- sc->io.valid = 1;
- pci_write_config(dev, PCIR_IOBASEL_1, 0, 1);
- }
- } else
- sc->io.valid = 1;
-
- /* Read the existing I/O port window. */
- if (sc->io.valid) {
- sc->io.reg = PCIR_IOBASEL_1;
- sc->io.step = 12;
- sc->io.mask = WIN_IO;
- sc->io.name = "I/O port";
- if ((val & PCIM_BRIO_MASK) == PCIM_BRIO_32) {
- sc->io.base = PCI_PPBIOBASE(
- pci_read_config(dev, PCIR_IOBASEH_1, 2), val);
- sc->io.limit = PCI_PPBIOLIMIT(
- pci_read_config(dev, PCIR_IOLIMITH_1, 2),
- pci_read_config(dev, PCIR_IOLIMITL_1, 1));
- max = 0xffffffff;
- } else {
- sc->io.base = PCI_PPBIOBASE(0, val);
- sc->io.limit = PCI_PPBIOLIMIT(0,
- pci_read_config(dev, PCIR_IOLIMITL_1, 1));
- max = 0xffff;
- }
- pcib_alloc_window(sc, &sc->io, SYS_RES_IOPORT, 0, max);
- }
-
- /* Read the existing memory window. */
- sc->mem.valid = 1;
- sc->mem.reg = PCIR_MEMBASE_1;
- sc->mem.step = 20;
- sc->mem.mask = WIN_MEM;
- sc->mem.name = "memory";
- sc->mem.base = PCI_PPBMEMBASE(0,
- pci_read_config(dev, PCIR_MEMBASE_1, 2));
- sc->mem.limit = PCI_PPBMEMLIMIT(0,
- pci_read_config(dev, PCIR_MEMLIMIT_1, 2));
- pcib_alloc_window(sc, &sc->mem, SYS_RES_MEMORY, 0, 0xffffffff);
-
- /* Determine if the prefetchable memory window is implemented. */
- val = pci_read_config(dev, PCIR_PMBASEL_1, 2);
- if (val == 0) {
- /*
- * If 'val' is zero, then only 32-bits of memory space
- * are supported.
- */
- pci_write_config(dev, PCIR_PMBASEL_1, 0xffff, 2);
- if (pci_read_config(dev, PCIR_PMBASEL_1, 2) != 0) {
- sc->pmem.valid = 1;
- pci_write_config(dev, PCIR_PMBASEL_1, 0, 2);
- }
- } else
- sc->pmem.valid = 1;
-
- /* Read the existing prefetchable memory window. */
- if (sc->pmem.valid) {
- sc->pmem.reg = PCIR_PMBASEL_1;
- sc->pmem.step = 20;
- sc->pmem.mask = WIN_PMEM;
- sc->pmem.name = "prefetch";
- if ((val & PCIM_BRPM_MASK) == PCIM_BRPM_64) {
- sc->pmem.base = PCI_PPBMEMBASE(
- pci_read_config(dev, PCIR_PMBASEH_1, 4), val);
- sc->pmem.limit = PCI_PPBMEMLIMIT(
- pci_read_config(dev, PCIR_PMLIMITH_1, 4),
- pci_read_config(dev, PCIR_PMLIMITL_1, 2));
- max = 0xffffffffffffffff;
- } else {
- sc->pmem.base = PCI_PPBMEMBASE(0, val);
- sc->pmem.limit = PCI_PPBMEMLIMIT(0,
- pci_read_config(dev, PCIR_PMLIMITL_1, 2));
- max = 0xffffffff;
- }
- pcib_alloc_window(sc, &sc->pmem, SYS_RES_MEMORY,
- RF_PREFETCHABLE, max);
- }
-}
-
-#else
-
-/*
- * Is the prefetch window open (eg, can we allocate memory in it?)
- */
-static int
-pcib_is_prefetch_open(struct pcib_softc *sc)
-{
- return (sc->pmembase > 0 && sc->pmembase < sc->pmemlimit);
-}
-
-/*
- * Is the nonprefetch window open (eg, can we allocate memory in it?)
- */
-static int
-pcib_is_nonprefetch_open(struct pcib_softc *sc)
-{
- return (sc->membase > 0 && sc->membase < sc->memlimit);
-}
-
-/*
- * Is the io window open (eg, can we allocate ports in it?)
- */
-static int
-pcib_is_io_open(struct pcib_softc *sc)
-{
- return (sc->iobase > 0 && sc->iobase < sc->iolimit);
-}
-
-/*
- * Get current I/O decode.
- */
-static void
-pcib_get_io_decode(struct pcib_softc *sc)
-{
- device_t dev;
- uint32_t iolow;
-
- dev = sc->dev;
-
- iolow = pci_read_config(dev, PCIR_IOBASEL_1, 1);
- if ((iolow & PCIM_BRIO_MASK) == PCIM_BRIO_32)
- sc->iobase = PCI_PPBIOBASE(
- pci_read_config(dev, PCIR_IOBASEH_1, 2), iolow);
- else
- sc->iobase = PCI_PPBIOBASE(0, iolow);
-
- iolow = pci_read_config(dev, PCIR_IOLIMITL_1, 1);
- if ((iolow & PCIM_BRIO_MASK) == PCIM_BRIO_32)
- sc->iolimit = PCI_PPBIOLIMIT(
- pci_read_config(dev, PCIR_IOLIMITH_1, 2), iolow);
- else
- sc->iolimit = PCI_PPBIOLIMIT(0, iolow);
-}
-
-/*
- * Get current memory decode.
- */
-static void
-pcib_get_mem_decode(struct pcib_softc *sc)
-{
- device_t dev;
- pci_addr_t pmemlow;
-
- dev = sc->dev;
-
- sc->membase = PCI_PPBMEMBASE(0,
- pci_read_config(dev, PCIR_MEMBASE_1, 2));
- sc->memlimit = PCI_PPBMEMLIMIT(0,
- pci_read_config(dev, PCIR_MEMLIMIT_1, 2));
-
- pmemlow = pci_read_config(dev, PCIR_PMBASEL_1, 2);
- if ((pmemlow & PCIM_BRPM_MASK) == PCIM_BRPM_64)
- sc->pmembase = PCI_PPBMEMBASE(
- pci_read_config(dev, PCIR_PMBASEH_1, 4), pmemlow);
- else
- sc->pmembase = PCI_PPBMEMBASE(0, pmemlow);
-
- pmemlow = pci_read_config(dev, PCIR_PMLIMITL_1, 2);
- if ((pmemlow & PCIM_BRPM_MASK) == PCIM_BRPM_64)
- sc->pmemlimit = PCI_PPBMEMLIMIT(
- pci_read_config(dev, PCIR_PMLIMITH_1, 4), pmemlow);
- else
- sc->pmemlimit = PCI_PPBMEMLIMIT(0, pmemlow);
-}
-
-/*
- * Restore previous I/O decode.
- */
-static void
-pcib_set_io_decode(struct pcib_softc *sc)
-{
- device_t dev;
- uint32_t iohi;
-
- dev = sc->dev;
-
- iohi = sc->iobase >> 16;
- if (iohi > 0)
- pci_write_config(dev, PCIR_IOBASEH_1, iohi, 2);
- pci_write_config(dev, PCIR_IOBASEL_1, sc->iobase >> 8, 1);
-
- iohi = sc->iolimit >> 16;
- if (iohi > 0)
- pci_write_config(dev, PCIR_IOLIMITH_1, iohi, 2);
- pci_write_config(dev, PCIR_IOLIMITL_1, sc->iolimit >> 8, 1);
-}
-
-/*
- * Restore previous memory decode.
- */
-static void
-pcib_set_mem_decode(struct pcib_softc *sc)
-{
- device_t dev;
- pci_addr_t pmemhi;
-
- dev = sc->dev;
-
- pci_write_config(dev, PCIR_MEMBASE_1, sc->membase >> 16, 2);
- pci_write_config(dev, PCIR_MEMLIMIT_1, sc->memlimit >> 16, 2);
-
- pmemhi = sc->pmembase >> 32;
- if (pmemhi > 0)
- pci_write_config(dev, PCIR_PMBASEH_1, pmemhi, 4);
- pci_write_config(dev, PCIR_PMBASEL_1, sc->pmembase >> 16, 2);
-
- pmemhi = sc->pmemlimit >> 32;
- if (pmemhi > 0)
- pci_write_config(dev, PCIR_PMLIMITH_1, pmemhi, 4);
- pci_write_config(dev, PCIR_PMLIMITL_1, sc->pmemlimit >> 16, 2);
-}
-#endif
-
-/*
- * Get current bridge configuration.
- */
-static void
-pcib_cfg_save(struct pcib_softc *sc)
-{
- device_t dev;
-
- dev = sc->dev;
-
- sc->command = pci_read_config(dev, PCIR_COMMAND, 2);
- sc->pribus = pci_read_config(dev, PCIR_PRIBUS_1, 1);
- sc->secbus = pci_read_config(dev, PCIR_SECBUS_1, 1);
- sc->subbus = pci_read_config(dev, PCIR_SUBBUS_1, 1);
- sc->bridgectl = pci_read_config(dev, PCIR_BRIDGECTL_1, 2);
- sc->seclat = pci_read_config(dev, PCIR_SECLAT_1, 1);
-#ifndef NEW_PCIB
- if (sc->command & PCIM_CMD_PORTEN)
- pcib_get_io_decode(sc);
- if (sc->command & PCIM_CMD_MEMEN)
- pcib_get_mem_decode(sc);
-#endif
-}
-
-/*
- * Restore previous bridge configuration.
- */
-static void
-pcib_cfg_restore(struct pcib_softc *sc)
-{
- device_t dev;
-
- dev = sc->dev;
-
- pci_write_config(dev, PCIR_COMMAND, sc->command, 2);
- pci_write_config(dev, PCIR_PRIBUS_1, sc->pribus, 1);
- pci_write_config(dev, PCIR_SECBUS_1, sc->secbus, 1);
- pci_write_config(dev, PCIR_SUBBUS_1, sc->subbus, 1);
- pci_write_config(dev, PCIR_BRIDGECTL_1, sc->bridgectl, 2);
- pci_write_config(dev, PCIR_SECLAT_1, sc->seclat, 1);
-#ifdef NEW_PCIB
- pcib_write_windows(sc, WIN_IO | WIN_MEM | WIN_PMEM);
-#else
- if (sc->command & PCIM_CMD_PORTEN)
- pcib_set_io_decode(sc);
- if (sc->command & PCIM_CMD_MEMEN)
- pcib_set_mem_decode(sc);
-#endif
-}
-
-/*
- * Generic device interface
- */
-static int
-pcib_probe(device_t dev)
-{
- if ((pci_get_class(dev) == PCIC_BRIDGE) &&
- (pci_get_subclass(dev) == PCIS_BRIDGE_PCI)) {
- device_set_desc(dev, "PCI-PCI bridge");
- return(-10000);
- }
- return(ENXIO);
-}
-
-void
-pcib_attach_common(device_t dev)
-{
- struct pcib_softc *sc;
- struct sysctl_ctx_list *sctx;
- struct sysctl_oid *soid;
-
- sc = device_get_softc(dev);
- sc->dev = dev;
-
- /*
- * Get current bridge configuration.
- */
- sc->domain = pci_get_domain(dev);
- sc->secstat = pci_read_config(dev, PCIR_SECSTAT_1, 2);
- pcib_cfg_save(sc);
-
- /*
- * Setup sysctl reporting nodes
- */
- sctx = device_get_sysctl_ctx(dev);
- soid = device_get_sysctl_tree(dev);
- SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "domain",
- CTLFLAG_RD, &sc->domain, 0, "Domain number");
- SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "pribus",
- CTLFLAG_RD, &sc->pribus, 0, "Primary bus number");
- SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "secbus",
- CTLFLAG_RD, &sc->secbus, 0, "Secondary bus number");
- SYSCTL_ADD_UINT(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "subbus",
- CTLFLAG_RD, &sc->subbus, 0, "Subordinate bus number");
-
- /*
- * Quirk handling.
- */
- switch (pci_get_devid(dev)) {
- case 0x12258086: /* Intel 82454KX/GX (Orion) */
- {
- uint8_t supbus;
-
- supbus = pci_read_config(dev, 0x41, 1);
- if (supbus != 0xff) {
- sc->secbus = supbus + 1;
- sc->subbus = supbus + 1;
- }
- break;
- }
-
- /*
- * The i82380FB mobile docking controller is a PCI-PCI bridge,
- * and it is a subtractive bridge. However, the ProgIf is wrong
- * so the normal setting of PCIB_SUBTRACTIVE bit doesn't
- * happen. There's also a Toshiba bridge that behaves this
- * way.
- */
- case 0x124b8086: /* Intel 82380FB Mobile */
- case 0x060513d7: /* Toshiba ???? */
- sc->flags |= PCIB_SUBTRACTIVE;
- break;
-
- /* Compaq R3000 BIOS sets wrong subordinate bus number. */
- case 0x00dd10de:
- {
- char *cp;
-
- if ((cp = getenv("smbios.planar.maker")) == NULL)
- break;
- if (strncmp(cp, "Compal", 6) != 0) {
- freeenv(cp);
- break;
- }
- freeenv(cp);
- if ((cp = getenv("smbios.planar.product")) == NULL)
- break;
- if (strncmp(cp, "08A0", 4) != 0) {
- freeenv(cp);
- break;
- }
- freeenv(cp);
- if (sc->subbus < 0xa) {
- pci_write_config(dev, PCIR_SUBBUS_1, 0xa, 1);
- sc->subbus = pci_read_config(dev, PCIR_SUBBUS_1, 1);
- }
- break;
- }
- }
-
- if (pci_msi_device_blacklisted(dev))
- sc->flags |= PCIB_DISABLE_MSI;
-
- /*
- * Intel 815, 845 and other chipsets say they are PCI-PCI bridges,
- * but have a ProgIF of 0x80. The 82801 family (AA, AB, BAM/CAM,
- * BA/CA/DB and E) PCI bridges are HUB-PCI bridges, in Intelese.
- * This means they act as if they were subtractively decoding
- * bridges and pass all transactions. Mark them and real ProgIf 1
- * parts as subtractive.
- */
- if ((pci_get_devid(dev) & 0xff00ffff) == 0x24008086 ||
- pci_read_config(dev, PCIR_PROGIF, 1) == PCIP_BRIDGE_PCI_SUBTRACTIVE)
- sc->flags |= PCIB_SUBTRACTIVE;
-
-#ifdef NEW_PCIB
- pcib_probe_windows(sc);
-#endif
- if (bootverbose) {
- device_printf(dev, " domain %d\n", sc->domain);
- device_printf(dev, " secondary bus %d\n", sc->secbus);
- device_printf(dev, " subordinate bus %d\n", sc->subbus);
-#ifdef NEW_PCIB
- if (pcib_is_window_open(&sc->io))
- device_printf(dev, " I/O decode 0x%jx-0x%jx\n",
- (uintmax_t)sc->io.base, (uintmax_t)sc->io.limit);
- if (pcib_is_window_open(&sc->mem))
- device_printf(dev, " memory decode 0x%jx-0x%jx\n",
- (uintmax_t)sc->mem.base, (uintmax_t)sc->mem.limit);
- if (pcib_is_window_open(&sc->pmem))
- device_printf(dev, " prefetched decode 0x%jx-0x%jx\n",
- (uintmax_t)sc->pmem.base, (uintmax_t)sc->pmem.limit);
-#else
- if (pcib_is_io_open(sc))
- device_printf(dev, " I/O decode 0x%x-0x%x\n",
- sc->iobase, sc->iolimit);
- if (pcib_is_nonprefetch_open(sc))
- device_printf(dev, " memory decode 0x%jx-0x%jx\n",
- (uintmax_t)sc->membase, (uintmax_t)sc->memlimit);
- if (pcib_is_prefetch_open(sc))
- device_printf(dev, " prefetched decode 0x%jx-0x%jx\n",
- (uintmax_t)sc->pmembase, (uintmax_t)sc->pmemlimit);
-#endif
- else
- device_printf(dev, " no prefetched decode\n");
- if (sc->flags & PCIB_SUBTRACTIVE)
- device_printf(dev, " Subtractively decoded bridge.\n");
- }
-
- /*
- * XXX If the secondary bus number is zero, we should assign a bus number
- * since the BIOS hasn't, then initialise the bridge. A simple
- * bus_alloc_resource with the a couple of busses seems like the right
- * approach, but we don't know what busses the BIOS might have already
- * assigned to other bridges on this bus that probe later than we do.
- *
- * If the subordinate bus number is less than the secondary bus number,
- * we should pick a better value. One sensible alternative would be to
- * pick 255; the only tradeoff here is that configuration transactions
- * would be more widely routed than absolutely necessary. We could
- * then do a walk of the tree later and fix it.
- */
-}
-
-int
-pcib_attach(device_t dev)
-{
- struct pcib_softc *sc;
- device_t child;
-
- pcib_attach_common(dev);
- sc = device_get_softc(dev);
- if (sc->secbus != 0) {
- child = device_add_child(dev, "pci", sc->secbus);
- if (child != NULL)
- return(bus_generic_attach(dev));
- }
-
- /* no secondary bus; we should have fixed this */
- return(0);
-}
-
-int
-pcib_suspend(device_t dev)
-{
- device_t pcib;
- int dstate, error;
-
- pcib_cfg_save(device_get_softc(dev));
- error = bus_generic_suspend(dev);
- if (error == 0 && pci_do_power_suspend) {
- dstate = PCI_POWERSTATE_D3;
- pcib = device_get_parent(device_get_parent(dev));
- if (PCIB_POWER_FOR_SLEEP(pcib, dev, &dstate) == 0)
- pci_set_powerstate(dev, dstate);
- }
- return (error);
-}
-
-int
-pcib_resume(device_t dev)
-{
- device_t pcib;
-
- if (pci_do_power_resume) {
- pcib = device_get_parent(device_get_parent(dev));
- if (PCIB_POWER_FOR_SLEEP(pcib, dev, NULL) == 0)
- pci_set_powerstate(dev, PCI_POWERSTATE_D0);
- }
- pcib_cfg_restore(device_get_softc(dev));
- return (bus_generic_resume(dev));
-}
-
-int
-pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
-{
- struct pcib_softc *sc = device_get_softc(dev);
-
- switch (which) {
- case PCIB_IVAR_DOMAIN:
- *result = sc->domain;
- return(0);
- case PCIB_IVAR_BUS:
- *result = sc->secbus;
- return(0);
- }
- return(ENOENT);
-}
-
-int
-pcib_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
-{
- struct pcib_softc *sc = device_get_softc(dev);
-
- switch (which) {
- case PCIB_IVAR_DOMAIN:
- return(EINVAL);
- case PCIB_IVAR_BUS:
- sc->secbus = value;
- return(0);
- }
- return(ENOENT);
-}
-
-#ifdef NEW_PCIB
-static const char *
-pcib_child_name(device_t child)
-{
- static char buf[64];
-
- if (device_get_nameunit(child) != NULL)
- return (device_get_nameunit(child));
- snprintf(buf, sizeof(buf), "pci%d:%d:%d:%d", pci_get_domain(child),
- pci_get_bus(child), pci_get_slot(child), pci_get_function(child));
- return (buf);
-}
-
-/*
- * Attempt to allocate a resource from the existing resources assigned
- * to a window.
- */
-static struct resource *
-pcib_suballoc_resource(struct pcib_softc *sc, struct pcib_window *w,
- device_t child, int type, int *rid, u_long start, u_long end, u_long count,
- u_int flags)
-{
- struct resource *res;
-
- if (!pcib_is_window_open(w))
- return (NULL);
-
- res = rman_reserve_resource(&w->rman, start, end, count,
- flags & ~RF_ACTIVE, child);
- if (res == NULL)
- return (NULL);
-
- if (bootverbose)
- device_printf(sc->dev,
- "allocated %s range (%#lx-%#lx) for rid %x of %s\n",
- w->name, rman_get_start(res), rman_get_end(res), *rid,
- pcib_child_name(child));
- rman_set_rid(res, *rid);
-
- /*
- * If the resource should be active, pass that request up the
- * tree. This assumes the parent drivers can handle
- * activating sub-allocated resources.
- */
- if (flags & RF_ACTIVE) {
- if (bus_activate_resource(child, type, *rid, res) != 0) {
- rman_release_resource(res);
- return (NULL);
- }
- }
-
- return (res);
-}
-
-/*
- * Attempt to grow a window to make room for a given resource request.
- * The 'step' parameter is log_2 of the desired I/O window's alignment.
- */
-static int
-pcib_grow_window(struct pcib_softc *sc, struct pcib_window *w, int type,
- u_long start, u_long end, u_long count, u_int flags)
-{
- u_long align, start_free, end_free, front, back;
- int error, rid;
-
- /*
- * Clamp the desired resource range to the maximum address
- * this window supports. Reject impossible requests.
- */
- if (!w->valid)
- return (EINVAL);
- if (end > w->rman.rm_end)
- end = w->rman.rm_end;
- if (start + count - 1 > end || start + count < start)
- return (EINVAL);
-
- /*
- * If there is no resource at all, just try to allocate enough
- * aligned space for this resource.
- */
- if (w->res == NULL) {
- if (RF_ALIGNMENT(flags) < w->step) {
- flags &= ~RF_ALIGNMENT_MASK;
- flags |= RF_ALIGNMENT_LOG2(w->step);
- }
- start &= ~((1ul << w->step) - 1);
- end |= ((1ul << w->step) - 1);
- count = roundup2(count, 1ul << w->step);
- rid = w->reg;
- w->res = bus_alloc_resource(sc->dev, type, &rid, start, end,
- count, flags & ~RF_ACTIVE);
- if (w->res == NULL) {
- if (bootverbose)
- device_printf(sc->dev,
- "failed to allocate initial %s window (%#lx-%#lx,%#lx)\n",
- w->name, start, end, count);
- return (ENXIO);
- }
- if (bootverbose)
- device_printf(sc->dev,
- "allocated initial %s window of %#lx-%#lx\n",
- w->name, rman_get_start(w->res),
- rman_get_end(w->res));
- error = rman_manage_region(&w->rman, rman_get_start(w->res),
- rman_get_end(w->res));
- if (error) {
- if (bootverbose)
- device_printf(sc->dev,
- "failed to add initial %s window to rman\n",
- w->name);
- bus_release_resource(sc->dev, type, w->reg, w->res);
- w->res = NULL;
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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