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author | John Baldwin <jhb@FreeBSD.org> | 2011-06-22 21:04:13 +0000 |
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committer | John Baldwin <jhb@FreeBSD.org> | 2011-06-22 21:04:13 +0000 |
commit | 1368987ae424617c7c314315a5e1b3c222773868 (patch) | |
tree | c291201daf11bb5188555ae61b9618567b8d6499 /sys/amd64/pci | |
parent | 0511675327e630aa81e6c358821feda8790e76a9 (diff) | |
download | src-1368987ae424617c7c314315a5e1b3c222773868.tar.gz src-1368987ae424617c7c314315a5e1b3c222773868.zip |
Move {amd64,i386}/pci/pci_bus.c and {amd64,i386}/include/pci_cfgreg.h to
the x86 tree. The $PIR code is still only enabled on i386 and not amd64.
While here, make the qpi(4) driver on conditional on 'device pci'.
Notes
Notes:
svn path=/head/; revision=223440
Diffstat (limited to 'sys/amd64/pci')
-rw-r--r-- | sys/amd64/pci/pci_bus.c | 435 |
1 files changed, 0 insertions, 435 deletions
diff --git a/sys/amd64/pci/pci_bus.c b/sys/amd64/pci/pci_bus.c deleted file mode 100644 index 6d58575b1654..000000000000 --- a/sys/amd64/pci/pci_bus.c +++ /dev/null @@ -1,435 +0,0 @@ -/*- - * Copyright (c) 1997, Stefan Esser <se@freebsd.org> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice unmodified, this list of conditions, and the following - * disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include "opt_cpu.h" - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/bus.h> -#include <sys/kernel.h> -#include <sys/malloc.h> -#include <sys/module.h> -#include <sys/rman.h> -#include <sys/sysctl.h> - -#include <dev/pci/pcivar.h> -#include <dev/pci/pcireg.h> -#include <dev/pci/pcib_private.h> -#include <isa/isavar.h> -#include <machine/legacyvar.h> -#include <machine/pci_cfgreg.h> -#include <machine/resource.h> - -#include "pcib_if.h" - -int -legacy_pcib_maxslots(device_t dev) -{ - return 31; -} - -/* read configuration space register */ - -uint32_t -legacy_pcib_read_config(device_t dev, u_int bus, u_int slot, u_int func, - u_int reg, int bytes) -{ - return(pci_cfgregread(bus, slot, func, reg, bytes)); -} - -/* write configuration space register */ - -void -legacy_pcib_write_config(device_t dev, u_int bus, u_int slot, u_int func, - u_int reg, uint32_t data, int bytes) -{ - pci_cfgregwrite(bus, slot, func, reg, data, bytes); -} - -/* route interrupt */ - -static int -legacy_pcib_route_interrupt(device_t pcib, device_t dev, int pin) -{ - - /* No routing possible */ - return (PCI_INVALID_IRQ); -} - -/* Pass MSI requests up to the nexus. */ - -static int -legacy_pcib_alloc_msi(device_t pcib, device_t dev, int count, int maxcount, - int *irqs) -{ - device_t bus; - - bus = device_get_parent(pcib); - return (PCIB_ALLOC_MSI(device_get_parent(bus), dev, count, maxcount, - irqs)); -} - -static int -legacy_pcib_alloc_msix(device_t pcib, device_t dev, int *irq) -{ - device_t bus; - - bus = device_get_parent(pcib); - return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq)); -} - -static int -legacy_pcib_map_msi(device_t pcib, device_t dev, int irq, uint64_t *addr, - uint32_t *data) -{ - device_t bus; - - bus = device_get_parent(pcib); - return (PCIB_MAP_MSI(device_get_parent(bus), dev, irq, addr, data)); -} - -static const char * -legacy_pcib_is_host_bridge(int bus, int slot, int func, - uint32_t id, uint8_t class, uint8_t subclass, - uint8_t *busnum) -{ - const char *s = NULL; - - *busnum = 0; - if (class == PCIC_BRIDGE && subclass == PCIS_BRIDGE_HOST) - s = "Host to PCI bridge"; - return s; -} - -/* - * Scan the first pci bus for host-pci bridges and add pcib instances - * to the nexus for each bridge. - */ -static void -legacy_pcib_identify(driver_t *driver, device_t parent) -{ - int bus, slot, func; - uint8_t hdrtype; - int found = 0; - int pcifunchigh; - int found824xx = 0; - int found_orion = 0; - device_t child; - devclass_t pci_devclass; - - if (pci_cfgregopen() == 0) - return; - /* - * Check to see if we haven't already had a PCI bus added - * via some other means. If we have, bail since otherwise - * we're going to end up duplicating it. - */ - if ((pci_devclass = devclass_find("pci")) && - devclass_get_device(pci_devclass, 0)) - return; - - - bus = 0; - retry: - for (slot = 0; slot <= PCI_SLOTMAX; slot++) { - func = 0; - hdrtype = legacy_pcib_read_config(0, bus, slot, func, - PCIR_HDRTYPE, 1); - /* - * When enumerating bus devices, the standard says that - * one should check the header type and ignore the slots whose - * header types that the software doesn't know about. We use - * this to filter out devices. - */ - if ((hdrtype & PCIM_HDRTYPE) > PCI_MAXHDRTYPE) - continue; - if ((hdrtype & PCIM_MFDEV) && - (!found_orion || hdrtype != 0xff)) - pcifunchigh = PCI_FUNCMAX; - else - pcifunchigh = 0; - for (func = 0; func <= pcifunchigh; func++) { - /* - * Read the IDs and class from the device. - */ - uint32_t id; - uint8_t class, subclass, busnum; - const char *s; - device_t *devs; - int ndevs, i; - - id = legacy_pcib_read_config(0, bus, slot, func, - PCIR_DEVVENDOR, 4); - if (id == -1) - continue; - class = legacy_pcib_read_config(0, bus, slot, func, - PCIR_CLASS, 1); - subclass = legacy_pcib_read_config(0, bus, slot, func, - PCIR_SUBCLASS, 1); - - s = legacy_pcib_is_host_bridge(bus, slot, func, - id, class, subclass, - &busnum); - if (s == NULL) - continue; - - /* - * Check to see if the physical bus has already - * been seen. Eg: hybrid 32 and 64 bit host - * bridges to the same logical bus. - */ - if (device_get_children(parent, &devs, &ndevs) == 0) { - for (i = 0; s != NULL && i < ndevs; i++) { - if (strcmp(device_get_name(devs[i]), - "pcib") != 0) - continue; - if (legacy_get_pcibus(devs[i]) == busnum) - s = NULL; - } - free(devs, M_TEMP); - } - - if (s == NULL) - continue; - /* - * Add at priority 100 to make sure we - * go after any motherboard resources - */ - child = BUS_ADD_CHILD(parent, 100, - "pcib", busnum); - device_set_desc(child, s); - legacy_set_pcibus(child, busnum); - - found = 1; - if (id == 0x12258086) - found824xx = 1; - if (id == 0x84c48086) - found_orion = 1; - } - } - if (found824xx && bus == 0) { - bus++; - goto retry; - } - - /* - * Make sure we add at least one bridge since some old - * hardware doesn't actually have a host-pci bridge device. - * Note that pci_cfgregopen() thinks we have PCI devices.. - */ - if (!found) { - if (bootverbose) - printf( - "legacy_pcib_identify: no bridge found, adding pcib0 anyway\n"); - child = BUS_ADD_CHILD(parent, 100, "pcib", 0); - legacy_set_pcibus(child, 0); - } -} - -static int -legacy_pcib_probe(device_t dev) -{ - - if (pci_cfgregopen() == 0) - return ENXIO; - return -100; -} - -static int -legacy_pcib_attach(device_t dev) -{ - int bus; - - bus = pcib_get_bus(dev); - device_add_child(dev, "pci", bus); - return bus_generic_attach(dev); -} - -int -legacy_pcib_read_ivar(device_t dev, device_t child, int which, - uintptr_t *result) -{ - - switch (which) { - case PCIB_IVAR_DOMAIN: - *result = 0; - return 0; - case PCIB_IVAR_BUS: - *result = legacy_get_pcibus(dev); - return 0; - } - return ENOENT; -} - -int -legacy_pcib_write_ivar(device_t dev, device_t child, int which, - uintptr_t value) -{ - - switch (which) { - case PCIB_IVAR_DOMAIN: - return EINVAL; - case PCIB_IVAR_BUS: - legacy_set_pcibus(dev, value); - return 0; - } - return ENOENT; -} - -/* - * Helper routine for x86 Host-PCI bridge driver resource allocation. - * This is used to adjust the start address of wildcard allocation - * requests to avoid low addresses that are known to be problematic. - * - * If no memory preference is given, use upper 32MB slot most BIOSes - * use for their memory window. This is typically only used on older - * laptops that don't have PCI busses behind a PCI bridge, so assuming - * > 32MB is likely OK. - * - * However, this can cause problems for other chipsets, so we make - * this tunable by hw.pci.host_mem_start. - */ -SYSCTL_DECL(_hw_pci); - -static unsigned long host_mem_start = 0x80000000; -TUNABLE_ULONG("hw.pci.host_mem_start", &host_mem_start); -SYSCTL_ULONG(_hw_pci, OID_AUTO, host_mem_start, CTLFLAG_RDTUN, &host_mem_start, - 0, "Limit the host bridge memory to being above this address."); - -u_long -hostb_alloc_start(int type, u_long start, u_long end, u_long count) -{ - - if (start + count - 1 != end) { - if (type == SYS_RES_MEMORY && start < host_mem_start) - start = host_mem_start; - if (type == SYS_RES_IOPORT && start < 0x1000) - start = 0x1000; - } - return (start); -} - -struct resource * -legacy_pcib_alloc_resource(device_t dev, device_t child, int type, int *rid, - u_long start, u_long end, u_long count, u_int flags) -{ - - start = hostb_alloc_start(type, start, end, count); - return (bus_generic_alloc_resource(dev, child, type, rid, start, end, - count, flags)); -} - -static device_method_t legacy_pcib_methods[] = { - /* Device interface */ - DEVMETHOD(device_identify, legacy_pcib_identify), - DEVMETHOD(device_probe, legacy_pcib_probe), - DEVMETHOD(device_attach, legacy_pcib_attach), - DEVMETHOD(device_shutdown, bus_generic_shutdown), - DEVMETHOD(device_suspend, bus_generic_suspend), - DEVMETHOD(device_resume, bus_generic_resume), - - /* Bus interface */ - DEVMETHOD(bus_print_child, bus_generic_print_child), - DEVMETHOD(bus_read_ivar, legacy_pcib_read_ivar), - DEVMETHOD(bus_write_ivar, legacy_pcib_write_ivar), - DEVMETHOD(bus_alloc_resource, legacy_pcib_alloc_resource), - DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource), - DEVMETHOD(bus_release_resource, bus_generic_release_resource), - 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, legacy_pcib_maxslots), - DEVMETHOD(pcib_read_config, legacy_pcib_read_config), - DEVMETHOD(pcib_write_config, legacy_pcib_write_config), - DEVMETHOD(pcib_route_interrupt, legacy_pcib_route_interrupt), - DEVMETHOD(pcib_alloc_msi, legacy_pcib_alloc_msi), - DEVMETHOD(pcib_release_msi, pcib_release_msi), - DEVMETHOD(pcib_alloc_msix, legacy_pcib_alloc_msix), - DEVMETHOD(pcib_release_msix, pcib_release_msix), - DEVMETHOD(pcib_map_msi, legacy_pcib_map_msi), - - { 0, 0 } -}; - -static devclass_t hostb_devclass; - -DEFINE_CLASS_0(pcib, legacy_pcib_driver, legacy_pcib_methods, 1); -DRIVER_MODULE(pcib, legacy, legacy_pcib_driver, hostb_devclass, 0, 0); - - -/* - * Install placeholder to claim the resources owned by the - * PCI bus interface. This could be used to extract the - * config space registers in the extreme case where the PnP - * ID is available and the PCI BIOS isn't, but for now we just - * eat the PnP ID and do nothing else. - * - * XXX we should silence this probe, as it will generally confuse - * people. - */ -static struct isa_pnp_id pcibus_pnp_ids[] = { - { 0x030ad041 /* PNP0A03 */, "PCI Bus" }, - { 0x080ad041 /* PNP0A08 */, "PCIe Bus" }, - { 0 } -}; - -static int -pcibus_pnp_probe(device_t dev) -{ - int result; - - if ((result = ISA_PNP_PROBE(device_get_parent(dev), dev, pcibus_pnp_ids)) <= 0) - device_quiet(dev); - return(result); -} - -static int -pcibus_pnp_attach(device_t dev) -{ - return(0); -} - -static device_method_t pcibus_pnp_methods[] = { - /* Device interface */ - DEVMETHOD(device_probe, pcibus_pnp_probe), - DEVMETHOD(device_attach, pcibus_pnp_attach), - DEVMETHOD(device_detach, bus_generic_detach), - DEVMETHOD(device_shutdown, bus_generic_shutdown), - DEVMETHOD(device_suspend, bus_generic_suspend), - DEVMETHOD(device_resume, bus_generic_resume), - { 0, 0 } -}; - -static devclass_t pcibus_pnp_devclass; - -DEFINE_CLASS_0(pcibus_pnp, pcibus_pnp_driver, pcibus_pnp_methods, 1); -DRIVER_MODULE(pcibus_pnp, isa, pcibus_pnp_driver, pcibus_pnp_devclass, 0, 0); |