$(mcore-y)/ \
arch/x86/crypto/
drivers-$(CONFIG_MATH_EMULATION) += arch/x86/math-emu/
-drivers-$(CONFIG_PCI) += arch/i386/pci/
+drivers-$(CONFIG_PCI) += arch/x86/pci/
# must be linked after kernel/
drivers-$(CONFIG_OPROFILE) += arch/i386/oprofile/
drivers-$(CONFIG_PM) += arch/x86/power/
+++ /dev/null
-ifeq ($(CONFIG_X86_32),y)
-include ${srctree}/arch/i386/pci/Makefile_32
-else
-include ${srctree}/arch/x86_64/pci/Makefile_64
-endif
+++ /dev/null
-obj-y := i386.o init.o
-
-obj-$(CONFIG_PCI_BIOS) += pcbios.o
-obj-$(CONFIG_PCI_MMCONFIG) += mmconfig_32.o direct.o mmconfig-shared.o
-obj-$(CONFIG_PCI_DIRECT) += direct.o
-
-pci-y := fixup.o
-pci-$(CONFIG_ACPI) += acpi.o
-pci-y += legacy.o irq.o
-
-pci-$(CONFIG_X86_VISWS) := visws.o fixup.o
-pci-$(CONFIG_X86_NUMAQ) := numa.o irq.o
-
-obj-y += $(pci-y) common.o early.o
+++ /dev/null
-#include <linux/pci.h>
-#include <linux/acpi.h>
-#include <linux/init.h>
-#include <linux/irq.h>
-#include <asm/numa.h>
-#include "pci.h"
-
-struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int domain, int busnum)
-{
- struct pci_bus *bus;
- struct pci_sysdata *sd;
- int pxm;
-
- /* Allocate per-root-bus (not per bus) arch-specific data.
- * TODO: leak; this memory is never freed.
- * It's arguable whether it's worth the trouble to care.
- */
- sd = kzalloc(sizeof(*sd), GFP_KERNEL);
- if (!sd) {
- printk(KERN_ERR "PCI: OOM, not probing PCI bus %02x\n", busnum);
- return NULL;
- }
-
- if (domain != 0) {
- printk(KERN_WARNING "PCI: Multiple domains not supported\n");
- kfree(sd);
- return NULL;
- }
-
- sd->node = -1;
-
- pxm = acpi_get_pxm(device->handle);
-#ifdef CONFIG_ACPI_NUMA
- if (pxm >= 0)
- sd->node = pxm_to_node(pxm);
-#endif
-
- bus = pci_scan_bus_parented(NULL, busnum, &pci_root_ops, sd);
- if (!bus)
- kfree(sd);
-
-#ifdef CONFIG_ACPI_NUMA
- if (bus != NULL) {
- if (pxm >= 0) {
- printk("bus %d -> pxm %d -> node %d\n",
- busnum, pxm, sd->node);
- }
- }
-#endif
-
- return bus;
-}
-
-extern int pci_routeirq;
-static int __init pci_acpi_init(void)
-{
- struct pci_dev *dev = NULL;
-
- if (pcibios_scanned)
- return 0;
-
- if (acpi_noirq)
- return 0;
-
- printk(KERN_INFO "PCI: Using ACPI for IRQ routing\n");
- acpi_irq_penalty_init();
- pcibios_scanned++;
- pcibios_enable_irq = acpi_pci_irq_enable;
- pcibios_disable_irq = acpi_pci_irq_disable;
-
- if (pci_routeirq) {
- /*
- * PCI IRQ routing is set up by pci_enable_device(), but we
- * also do it here in case there are still broken drivers that
- * don't use pci_enable_device().
- */
- printk(KERN_INFO "PCI: Routing PCI interrupts for all devices because \"pci=routeirq\" specified\n");
- for_each_pci_dev(dev)
- acpi_pci_irq_enable(dev);
- } else
- printk(KERN_INFO "PCI: If a device doesn't work, try \"pci=routeirq\". If it helps, post a report\n");
-
-#ifdef CONFIG_X86_IO_APIC
- if (acpi_ioapic)
- print_IO_APIC();
-#endif
-
- return 0;
-}
-subsys_initcall(pci_acpi_init);
+++ /dev/null
-/*
- * Low-Level PCI Support for PC
- *
- * (c) 1999--2000 Martin Mares <mj@ucw.cz>
- */
-
-#include <linux/sched.h>
-#include <linux/pci.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <linux/dmi.h>
-
-#include <asm/acpi.h>
-#include <asm/segment.h>
-#include <asm/io.h>
-#include <asm/smp.h>
-
-#include "pci.h"
-
-unsigned int pci_probe = PCI_PROBE_BIOS | PCI_PROBE_CONF1 | PCI_PROBE_CONF2 |
- PCI_PROBE_MMCONF;
-
-static int pci_bf_sort;
-int pci_routeirq;
-int pcibios_last_bus = -1;
-unsigned long pirq_table_addr;
-struct pci_bus *pci_root_bus;
-struct pci_raw_ops *raw_pci_ops;
-
-static int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
-{
- return raw_pci_ops->read(0, bus->number, devfn, where, size, value);
-}
-
-static int pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value)
-{
- return raw_pci_ops->write(0, bus->number, devfn, where, size, value);
-}
-
-struct pci_ops pci_root_ops = {
- .read = pci_read,
- .write = pci_write,
-};
-
-/*
- * legacy, numa, and acpi all want to call pcibios_scan_root
- * from their initcalls. This flag prevents that.
- */
-int pcibios_scanned;
-
-/*
- * This interrupt-safe spinlock protects all accesses to PCI
- * configuration space.
- */
-DEFINE_SPINLOCK(pci_config_lock);
-
-/*
- * Several buggy motherboards address only 16 devices and mirror
- * them to next 16 IDs. We try to detect this `feature' on all
- * primary buses (those containing host bridges as they are
- * expected to be unique) and remove the ghost devices.
- */
-
-static void __devinit pcibios_fixup_ghosts(struct pci_bus *b)
-{
- struct list_head *ln, *mn;
- struct pci_dev *d, *e;
- int mirror = PCI_DEVFN(16,0);
- int seen_host_bridge = 0;
- int i;
-
- DBG("PCI: Scanning for ghost devices on bus %d\n", b->number);
- list_for_each(ln, &b->devices) {
- d = pci_dev_b(ln);
- if ((d->class >> 8) == PCI_CLASS_BRIDGE_HOST)
- seen_host_bridge++;
- for (mn=ln->next; mn != &b->devices; mn=mn->next) {
- e = pci_dev_b(mn);
- if (e->devfn != d->devfn + mirror ||
- e->vendor != d->vendor ||
- e->device != d->device ||
- e->class != d->class)
- continue;
- for(i=0; i<PCI_NUM_RESOURCES; i++)
- if (e->resource[i].start != d->resource[i].start ||
- e->resource[i].end != d->resource[i].end ||
- e->resource[i].flags != d->resource[i].flags)
- continue;
- break;
- }
- if (mn == &b->devices)
- return;
- }
- if (!seen_host_bridge)
- return;
- printk(KERN_WARNING "PCI: Ignoring ghost devices on bus %02x\n", b->number);
-
- ln = &b->devices;
- while (ln->next != &b->devices) {
- d = pci_dev_b(ln->next);
- if (d->devfn >= mirror) {
- list_del(&d->global_list);
- list_del(&d->bus_list);
- kfree(d);
- } else
- ln = ln->next;
- }
-}
-
-/*
- * Called after each bus is probed, but before its children
- * are examined.
- */
-
-void __devinit pcibios_fixup_bus(struct pci_bus *b)
-{
- pcibios_fixup_ghosts(b);
- pci_read_bridge_bases(b);
-}
-
-/*
- * Only use DMI information to set this if nothing was passed
- * on the kernel command line (which was parsed earlier).
- */
-
-static int __devinit set_bf_sort(struct dmi_system_id *d)
-{
- if (pci_bf_sort == pci_bf_sort_default) {
- pci_bf_sort = pci_dmi_bf;
- printk(KERN_INFO "PCI: %s detected, enabling pci=bfsort.\n", d->ident);
- }
- return 0;
-}
-
-/*
- * Enable renumbering of PCI bus# ranges to reach all PCI busses (Cardbus)
- */
-#ifdef __i386__
-static int __devinit assign_all_busses(struct dmi_system_id *d)
-{
- pci_probe |= PCI_ASSIGN_ALL_BUSSES;
- printk(KERN_INFO "%s detected: enabling PCI bus# renumbering"
- " (pci=assign-busses)\n", d->ident);
- return 0;
-}
-#endif
-
-static struct dmi_system_id __devinitdata pciprobe_dmi_table[] = {
-#ifdef __i386__
-/*
- * Laptops which need pci=assign-busses to see Cardbus cards
- */
- {
- .callback = assign_all_busses,
- .ident = "Samsung X20 Laptop",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Samsung Electronics"),
- DMI_MATCH(DMI_PRODUCT_NAME, "SX20S"),
- },
- },
-#endif /* __i386__ */
- {
- .callback = set_bf_sort,
- .ident = "Dell PowerEdge 1950",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
- DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1950"),
- },
- },
- {
- .callback = set_bf_sort,
- .ident = "Dell PowerEdge 1955",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
- DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1955"),
- },
- },
- {
- .callback = set_bf_sort,
- .ident = "Dell PowerEdge 2900",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
- DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2900"),
- },
- },
- {
- .callback = set_bf_sort,
- .ident = "Dell PowerEdge 2950",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
- DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2950"),
- },
- },
- {
- .callback = set_bf_sort,
- .ident = "Dell PowerEdge R900",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
- DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge R900"),
- },
- },
- {
- .callback = set_bf_sort,
- .ident = "HP ProLiant BL20p G3",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "HP"),
- DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL20p G3"),
- },
- },
- {
- .callback = set_bf_sort,
- .ident = "HP ProLiant BL20p G4",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "HP"),
- DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL20p G4"),
- },
- },
- {
- .callback = set_bf_sort,
- .ident = "HP ProLiant BL30p G1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "HP"),
- DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL30p G1"),
- },
- },
- {
- .callback = set_bf_sort,
- .ident = "HP ProLiant BL25p G1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "HP"),
- DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL25p G1"),
- },
- },
- {
- .callback = set_bf_sort,
- .ident = "HP ProLiant BL35p G1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "HP"),
- DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL35p G1"),
- },
- },
- {
- .callback = set_bf_sort,
- .ident = "HP ProLiant BL45p G1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "HP"),
- DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL45p G1"),
- },
- },
- {
- .callback = set_bf_sort,
- .ident = "HP ProLiant BL45p G2",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "HP"),
- DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL45p G2"),
- },
- },
- {
- .callback = set_bf_sort,
- .ident = "HP ProLiant BL460c G1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "HP"),
- DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL460c G1"),
- },
- },
- {
- .callback = set_bf_sort,
- .ident = "HP ProLiant BL465c G1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "HP"),
- DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL465c G1"),
- },
- },
- {
- .callback = set_bf_sort,
- .ident = "HP ProLiant BL480c G1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "HP"),
- DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL480c G1"),
- },
- },
- {
- .callback = set_bf_sort,
- .ident = "HP ProLiant BL685c G1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "HP"),
- DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL685c G1"),
- },
- },
- {}
-};
-
-struct pci_bus * __devinit pcibios_scan_root(int busnum)
-{
- struct pci_bus *bus = NULL;
- struct pci_sysdata *sd;
-
- dmi_check_system(pciprobe_dmi_table);
-
- while ((bus = pci_find_next_bus(bus)) != NULL) {
- if (bus->number == busnum) {
- /* Already scanned */
- return bus;
- }
- }
-
- /* Allocate per-root-bus (not per bus) arch-specific data.
- * TODO: leak; this memory is never freed.
- * It's arguable whether it's worth the trouble to care.
- */
- sd = kzalloc(sizeof(*sd), GFP_KERNEL);
- if (!sd) {
- printk(KERN_ERR "PCI: OOM, not probing PCI bus %02x\n", busnum);
- return NULL;
- }
-
- printk(KERN_DEBUG "PCI: Probing PCI hardware (bus %02x)\n", busnum);
-
- return pci_scan_bus_parented(NULL, busnum, &pci_root_ops, sd);
-}
-
-extern u8 pci_cache_line_size;
-
-static int __init pcibios_init(void)
-{
- struct cpuinfo_x86 *c = &boot_cpu_data;
-
- if (!raw_pci_ops) {
- printk(KERN_WARNING "PCI: System does not support PCI\n");
- return 0;
- }
-
- /*
- * Assume PCI cacheline size of 32 bytes for all x86s except K7/K8
- * and P4. It's also good for 386/486s (which actually have 16)
- * as quite a few PCI devices do not support smaller values.
- */
- pci_cache_line_size = 32 >> 2;
- if (c->x86 >= 6 && c->x86_vendor == X86_VENDOR_AMD)
- pci_cache_line_size = 64 >> 2; /* K7 & K8 */
- else if (c->x86 > 6 && c->x86_vendor == X86_VENDOR_INTEL)
- pci_cache_line_size = 128 >> 2; /* P4 */
-
- pcibios_resource_survey();
-
- if (pci_bf_sort >= pci_force_bf)
- pci_sort_breadthfirst();
-#ifdef CONFIG_PCI_BIOS
- if ((pci_probe & PCI_BIOS_SORT) && !(pci_probe & PCI_NO_SORT))
- pcibios_sort();
-#endif
- return 0;
-}
-
-subsys_initcall(pcibios_init);
-
-char * __devinit pcibios_setup(char *str)
-{
- if (!strcmp(str, "off")) {
- pci_probe = 0;
- return NULL;
- } else if (!strcmp(str, "bfsort")) {
- pci_bf_sort = pci_force_bf;
- return NULL;
- } else if (!strcmp(str, "nobfsort")) {
- pci_bf_sort = pci_force_nobf;
- return NULL;
- }
-#ifdef CONFIG_PCI_BIOS
- else if (!strcmp(str, "bios")) {
- pci_probe = PCI_PROBE_BIOS;
- return NULL;
- } else if (!strcmp(str, "nobios")) {
- pci_probe &= ~PCI_PROBE_BIOS;
- return NULL;
- } else if (!strcmp(str, "nosort")) {
- pci_probe |= PCI_NO_SORT;
- return NULL;
- } else if (!strcmp(str, "biosirq")) {
- pci_probe |= PCI_BIOS_IRQ_SCAN;
- return NULL;
- } else if (!strncmp(str, "pirqaddr=", 9)) {
- pirq_table_addr = simple_strtoul(str+9, NULL, 0);
- return NULL;
- }
-#endif
-#ifdef CONFIG_PCI_DIRECT
- else if (!strcmp(str, "conf1")) {
- pci_probe = PCI_PROBE_CONF1 | PCI_NO_CHECKS;
- return NULL;
- }
- else if (!strcmp(str, "conf2")) {
- pci_probe = PCI_PROBE_CONF2 | PCI_NO_CHECKS;
- return NULL;
- }
-#endif
-#ifdef CONFIG_PCI_MMCONFIG
- else if (!strcmp(str, "nommconf")) {
- pci_probe &= ~PCI_PROBE_MMCONF;
- return NULL;
- }
-#endif
- else if (!strcmp(str, "noacpi")) {
- acpi_noirq_set();
- return NULL;
- }
- else if (!strcmp(str, "noearly")) {
- pci_probe |= PCI_PROBE_NOEARLY;
- return NULL;
- }
-#ifndef CONFIG_X86_VISWS
- else if (!strcmp(str, "usepirqmask")) {
- pci_probe |= PCI_USE_PIRQ_MASK;
- return NULL;
- } else if (!strncmp(str, "irqmask=", 8)) {
- pcibios_irq_mask = simple_strtol(str+8, NULL, 0);
- return NULL;
- } else if (!strncmp(str, "lastbus=", 8)) {
- pcibios_last_bus = simple_strtol(str+8, NULL, 0);
- return NULL;
- }
-#endif
- else if (!strcmp(str, "rom")) {
- pci_probe |= PCI_ASSIGN_ROMS;
- return NULL;
- } else if (!strcmp(str, "assign-busses")) {
- pci_probe |= PCI_ASSIGN_ALL_BUSSES;
- return NULL;
- } else if (!strcmp(str, "routeirq")) {
- pci_routeirq = 1;
- return NULL;
- }
- return str;
-}
-
-unsigned int pcibios_assign_all_busses(void)
-{
- return (pci_probe & PCI_ASSIGN_ALL_BUSSES) ? 1 : 0;
-}
-
-int pcibios_enable_device(struct pci_dev *dev, int mask)
-{
- int err;
-
- if ((err = pcibios_enable_resources(dev, mask)) < 0)
- return err;
-
- if (!dev->msi_enabled)
- return pcibios_enable_irq(dev);
- return 0;
-}
-
-void pcibios_disable_device (struct pci_dev *dev)
-{
- if (!dev->msi_enabled && pcibios_disable_irq)
- pcibios_disable_irq(dev);
-}
-
-struct pci_bus *pci_scan_bus_with_sysdata(int busno)
-{
- struct pci_bus *bus = NULL;
- struct pci_sysdata *sd;
-
- /*
- * Allocate per-root-bus (not per bus) arch-specific data.
- * TODO: leak; this memory is never freed.
- * It's arguable whether it's worth the trouble to care.
- */
- sd = kzalloc(sizeof(*sd), GFP_KERNEL);
- if (!sd) {
- printk(KERN_ERR "PCI: OOM, skipping PCI bus %02x\n", busno);
- return NULL;
- }
- sd->node = -1;
- bus = pci_scan_bus(busno, &pci_root_ops, sd);
- if (!bus)
- kfree(sd);
-
- return bus;
-}
+++ /dev/null
-/*
- * direct.c - Low-level direct PCI config space access
- */
-
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/dmi.h>
-#include "pci.h"
-
-/*
- * Functions for accessing PCI configuration space with type 1 accesses
- */
-
-#define PCI_CONF1_ADDRESS(bus, devfn, reg) \
- (0x80000000 | (bus << 16) | (devfn << 8) | (reg & ~3))
-
-int pci_conf1_read(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 *value)
-{
- unsigned long flags;
-
- if ((bus > 255) || (devfn > 255) || (reg > 255)) {
- *value = -1;
- return -EINVAL;
- }
-
- spin_lock_irqsave(&pci_config_lock, flags);
-
- outl(PCI_CONF1_ADDRESS(bus, devfn, reg), 0xCF8);
-
- switch (len) {
- case 1:
- *value = inb(0xCFC + (reg & 3));
- break;
- case 2:
- *value = inw(0xCFC + (reg & 2));
- break;
- case 4:
- *value = inl(0xCFC);
- break;
- }
-
- spin_unlock_irqrestore(&pci_config_lock, flags);
-
- return 0;
-}
-
-int pci_conf1_write(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 value)
-{
- unsigned long flags;
-
- if ((bus > 255) || (devfn > 255) || (reg > 255))
- return -EINVAL;
-
- spin_lock_irqsave(&pci_config_lock, flags);
-
- outl(PCI_CONF1_ADDRESS(bus, devfn, reg), 0xCF8);
-
- switch (len) {
- case 1:
- outb((u8)value, 0xCFC + (reg & 3));
- break;
- case 2:
- outw((u16)value, 0xCFC + (reg & 2));
- break;
- case 4:
- outl((u32)value, 0xCFC);
- break;
- }
-
- spin_unlock_irqrestore(&pci_config_lock, flags);
-
- return 0;
-}
-
-#undef PCI_CONF1_ADDRESS
-
-struct pci_raw_ops pci_direct_conf1 = {
- .read = pci_conf1_read,
- .write = pci_conf1_write,
-};
-
-
-/*
- * Functions for accessing PCI configuration space with type 2 accesses
- */
-
-#define PCI_CONF2_ADDRESS(dev, reg) (u16)(0xC000 | (dev << 8) | reg)
-
-static int pci_conf2_read(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 *value)
-{
- unsigned long flags;
- int dev, fn;
-
- if ((bus > 255) || (devfn > 255) || (reg > 255)) {
- *value = -1;
- return -EINVAL;
- }
-
- dev = PCI_SLOT(devfn);
- fn = PCI_FUNC(devfn);
-
- if (dev & 0x10)
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- spin_lock_irqsave(&pci_config_lock, flags);
-
- outb((u8)(0xF0 | (fn << 1)), 0xCF8);
- outb((u8)bus, 0xCFA);
-
- switch (len) {
- case 1:
- *value = inb(PCI_CONF2_ADDRESS(dev, reg));
- break;
- case 2:
- *value = inw(PCI_CONF2_ADDRESS(dev, reg));
- break;
- case 4:
- *value = inl(PCI_CONF2_ADDRESS(dev, reg));
- break;
- }
-
- outb(0, 0xCF8);
-
- spin_unlock_irqrestore(&pci_config_lock, flags);
-
- return 0;
-}
-
-static int pci_conf2_write(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 value)
-{
- unsigned long flags;
- int dev, fn;
-
- if ((bus > 255) || (devfn > 255) || (reg > 255))
- return -EINVAL;
-
- dev = PCI_SLOT(devfn);
- fn = PCI_FUNC(devfn);
-
- if (dev & 0x10)
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- spin_lock_irqsave(&pci_config_lock, flags);
-
- outb((u8)(0xF0 | (fn << 1)), 0xCF8);
- outb((u8)bus, 0xCFA);
-
- switch (len) {
- case 1:
- outb((u8)value, PCI_CONF2_ADDRESS(dev, reg));
- break;
- case 2:
- outw((u16)value, PCI_CONF2_ADDRESS(dev, reg));
- break;
- case 4:
- outl((u32)value, PCI_CONF2_ADDRESS(dev, reg));
- break;
- }
-
- outb(0, 0xCF8);
-
- spin_unlock_irqrestore(&pci_config_lock, flags);
-
- return 0;
-}
-
-#undef PCI_CONF2_ADDRESS
-
-static struct pci_raw_ops pci_direct_conf2 = {
- .read = pci_conf2_read,
- .write = pci_conf2_write,
-};
-
-
-/*
- * Before we decide to use direct hardware access mechanisms, we try to do some
- * trivial checks to ensure it at least _seems_ to be working -- we just test
- * whether bus 00 contains a host bridge (this is similar to checking
- * techniques used in XFree86, but ours should be more reliable since we
- * attempt to make use of direct access hints provided by the PCI BIOS).
- *
- * This should be close to trivial, but it isn't, because there are buggy
- * chipsets (yes, you guessed it, by Intel and Compaq) that have no class ID.
- */
-static int __init pci_sanity_check(struct pci_raw_ops *o)
-{
- u32 x = 0;
- int devfn;
-
- if (pci_probe & PCI_NO_CHECKS)
- return 1;
- /* Assume Type 1 works for newer systems.
- This handles machines that don't have anything on PCI Bus 0. */
- if (dmi_get_year(DMI_BIOS_DATE) >= 2001)
- return 1;
-
- for (devfn = 0; devfn < 0x100; devfn++) {
- if (o->read(0, 0, devfn, PCI_CLASS_DEVICE, 2, &x))
- continue;
- if (x == PCI_CLASS_BRIDGE_HOST || x == PCI_CLASS_DISPLAY_VGA)
- return 1;
-
- if (o->read(0, 0, devfn, PCI_VENDOR_ID, 2, &x))
- continue;
- if (x == PCI_VENDOR_ID_INTEL || x == PCI_VENDOR_ID_COMPAQ)
- return 1;
- }
-
- DBG(KERN_WARNING "PCI: Sanity check failed\n");
- return 0;
-}
-
-static int __init pci_check_type1(void)
-{
- unsigned long flags;
- unsigned int tmp;
- int works = 0;
-
- local_irq_save(flags);
-
- outb(0x01, 0xCFB);
- tmp = inl(0xCF8);
- outl(0x80000000, 0xCF8);
- if (inl(0xCF8) == 0x80000000 && pci_sanity_check(&pci_direct_conf1)) {
- works = 1;
- }
- outl(tmp, 0xCF8);
- local_irq_restore(flags);
-
- return works;
-}
-
-static int __init pci_check_type2(void)
-{
- unsigned long flags;
- int works = 0;
-
- local_irq_save(flags);
-
- outb(0x00, 0xCFB);
- outb(0x00, 0xCF8);
- outb(0x00, 0xCFA);
- if (inb(0xCF8) == 0x00 && inb(0xCFA) == 0x00 &&
- pci_sanity_check(&pci_direct_conf2)) {
- works = 1;
- }
-
- local_irq_restore(flags);
-
- return works;
-}
-
-void __init pci_direct_init(int type)
-{
- if (type == 0)
- return;
- printk(KERN_INFO "PCI: Using configuration type %d\n", type);
- if (type == 1)
- raw_pci_ops = &pci_direct_conf1;
- else
- raw_pci_ops = &pci_direct_conf2;
-}
-
-int __init pci_direct_probe(void)
-{
- struct resource *region, *region2;
-
- if ((pci_probe & PCI_PROBE_CONF1) == 0)
- goto type2;
- region = request_region(0xCF8, 8, "PCI conf1");
- if (!region)
- goto type2;
-
- if (pci_check_type1())
- return 1;
- release_resource(region);
-
- type2:
- if ((pci_probe & PCI_PROBE_CONF2) == 0)
- return 0;
- region = request_region(0xCF8, 4, "PCI conf2");
- if (!region)
- return 0;
- region2 = request_region(0xC000, 0x1000, "PCI conf2");
- if (!region2)
- goto fail2;
-
- if (pci_check_type2()) {
- printk(KERN_INFO "PCI: Using configuration type 2\n");
- raw_pci_ops = &pci_direct_conf2;
- return 2;
- }
-
- release_resource(region2);
- fail2:
- release_resource(region);
- return 0;
-}
+++ /dev/null
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <asm/pci-direct.h>
-#include <asm/io.h>
-#include "pci.h"
-
-/* Direct PCI access. This is used for PCI accesses in early boot before
- the PCI subsystem works. */
-
-#define PDprintk(x...)
-
-u32 read_pci_config(u8 bus, u8 slot, u8 func, u8 offset)
-{
- u32 v;
- outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
- v = inl(0xcfc);
- if (v != 0xffffffff)
- PDprintk("%x reading 4 from %x: %x\n", slot, offset, v);
- return v;
-}
-
-u8 read_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset)
-{
- u8 v;
- outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
- v = inb(0xcfc + (offset&3));
- PDprintk("%x reading 1 from %x: %x\n", slot, offset, v);
- return v;
-}
-
-u16 read_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset)
-{
- u16 v;
- outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
- v = inw(0xcfc + (offset&2));
- PDprintk("%x reading 2 from %x: %x\n", slot, offset, v);
- return v;
-}
-
-void write_pci_config(u8 bus, u8 slot, u8 func, u8 offset,
- u32 val)
-{
- PDprintk("%x writing to %x: %x\n", slot, offset, val);
- outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
- outl(val, 0xcfc);
-}
-
-void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val)
-{
- PDprintk("%x writing to %x: %x\n", slot, offset, val);
- outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
- outb(val, 0xcfc);
-}
-
-int early_pci_allowed(void)
-{
- return (pci_probe & (PCI_PROBE_CONF1|PCI_PROBE_NOEARLY)) ==
- PCI_PROBE_CONF1;
-}
+++ /dev/null
-/*
- * Exceptions for specific devices. Usually work-arounds for fatal design flaws.
- */
-
-#include <linux/delay.h>
-#include <linux/dmi.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include "pci.h"
-
-
-static void __devinit pci_fixup_i450nx(struct pci_dev *d)
-{
- /*
- * i450NX -- Find and scan all secondary buses on all PXB's.
- */
- int pxb, reg;
- u8 busno, suba, subb;
-
- printk(KERN_WARNING "PCI: Searching for i450NX host bridges on %s\n", pci_name(d));
- reg = 0xd0;
- for(pxb=0; pxb<2; pxb++) {
- pci_read_config_byte(d, reg++, &busno);
- pci_read_config_byte(d, reg++, &suba);
- pci_read_config_byte(d, reg++, &subb);
- DBG("i450NX PXB %d: %02x/%02x/%02x\n", pxb, busno, suba, subb);
- if (busno)
- pci_scan_bus_with_sysdata(busno); /* Bus A */
- if (suba < subb)
- pci_scan_bus_with_sysdata(suba+1); /* Bus B */
- }
- pcibios_last_bus = -1;
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82451NX, pci_fixup_i450nx);
-
-static void __devinit pci_fixup_i450gx(struct pci_dev *d)
-{
- /*
- * i450GX and i450KX -- Find and scan all secondary buses.
- * (called separately for each PCI bridge found)
- */
- u8 busno;
- pci_read_config_byte(d, 0x4a, &busno);
- printk(KERN_INFO "PCI: i440KX/GX host bridge %s: secondary bus %02x\n", pci_name(d), busno);
- pci_scan_bus_with_sysdata(busno);
- pcibios_last_bus = -1;
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454GX, pci_fixup_i450gx);
-
-static void __devinit pci_fixup_umc_ide(struct pci_dev *d)
-{
- /*
- * UM8886BF IDE controller sets region type bits incorrectly,
- * therefore they look like memory despite of them being I/O.
- */
- int i;
-
- printk(KERN_WARNING "PCI: Fixing base address flags for device %s\n", pci_name(d));
- for(i=0; i<4; i++)
- d->resource[i].flags |= PCI_BASE_ADDRESS_SPACE_IO;
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8886BF, pci_fixup_umc_ide);
-
-static void __devinit pci_fixup_ncr53c810(struct pci_dev *d)
-{
- /*
- * NCR 53C810 returns class code 0 (at least on some systems).
- * Fix class to be PCI_CLASS_STORAGE_SCSI
- */
- if (!d->class) {
- printk(KERN_WARNING "PCI: fixing NCR 53C810 class code for %s\n", pci_name(d));
- d->class = PCI_CLASS_STORAGE_SCSI << 8;
- }
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, pci_fixup_ncr53c810);
-
-static void __devinit pci_fixup_latency(struct pci_dev *d)
-{
- /*
- * SiS 5597 and 5598 chipsets require latency timer set to
- * at most 32 to avoid lockups.
- */
- DBG("PCI: Setting max latency to 32\n");
- pcibios_max_latency = 32;
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, pci_fixup_latency);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5598, pci_fixup_latency);
-
-static void __devinit pci_fixup_piix4_acpi(struct pci_dev *d)
-{
- /*
- * PIIX4 ACPI device: hardwired IRQ9
- */
- d->irq = 9;
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, pci_fixup_piix4_acpi);
-
-/*
- * Addresses issues with problems in the memory write queue timer in
- * certain VIA Northbridges. This bugfix is per VIA's specifications,
- * except for the KL133/KM133: clearing bit 5 on those Northbridges seems
- * to trigger a bug in its integrated ProSavage video card, which
- * causes screen corruption. We only clear bits 6 and 7 for that chipset,
- * until VIA can provide us with definitive information on why screen
- * corruption occurs, and what exactly those bits do.
- *
- * VIA 8363,8622,8361 Northbridges:
- * - bits 5, 6, 7 at offset 0x55 need to be turned off
- * VIA 8367 (KT266x) Northbridges:
- * - bits 5, 6, 7 at offset 0x95 need to be turned off
- * VIA 8363 rev 0x81/0x84 (KL133/KM133) Northbridges:
- * - bits 6, 7 at offset 0x55 need to be turned off
- */
-
-#define VIA_8363_KL133_REVISION_ID 0x81
-#define VIA_8363_KM133_REVISION_ID 0x84
-
-static void pci_fixup_via_northbridge_bug(struct pci_dev *d)
-{
- u8 v;
- int where = 0x55;
- int mask = 0x1f; /* clear bits 5, 6, 7 by default */
-
- if (d->device == PCI_DEVICE_ID_VIA_8367_0) {
- /* fix pci bus latency issues resulted by NB bios error
- it appears on bug free^Wreduced kt266x's bios forces
- NB latency to zero */
- pci_write_config_byte(d, PCI_LATENCY_TIMER, 0);
-
- where = 0x95; /* the memory write queue timer register is
- different for the KT266x's: 0x95 not 0x55 */
- } else if (d->device == PCI_DEVICE_ID_VIA_8363_0 &&
- (d->revision == VIA_8363_KL133_REVISION_ID ||
- d->revision == VIA_8363_KM133_REVISION_ID)) {
- mask = 0x3f; /* clear only bits 6 and 7; clearing bit 5
- causes screen corruption on the KL133/KM133 */
- }
-
- pci_read_config_byte(d, where, &v);
- if (v & ~mask) {
- printk(KERN_WARNING "Disabling VIA memory write queue (PCI ID %04x, rev %02x): [%02x] %02x & %02x -> %02x\n", \
- d->device, d->revision, where, v, mask, v & mask);
- v &= mask;
- pci_write_config_byte(d, where, v);
- }
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, pci_fixup_via_northbridge_bug);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8622, pci_fixup_via_northbridge_bug);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, pci_fixup_via_northbridge_bug);
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8367_0, pci_fixup_via_northbridge_bug);
-DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, pci_fixup_via_northbridge_bug);
-DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8622, pci_fixup_via_northbridge_bug);
-DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, pci_fixup_via_northbridge_bug);
-DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8367_0, pci_fixup_via_northbridge_bug);
-
-/*
- * For some reasons Intel decided that certain parts of their
- * 815, 845 and some other chipsets must look like PCI-to-PCI bridges
- * while they are obviously not. The 82801 family (AA, AB, BAM/CAM,
- * BA/CA/DB and E) PCI bridges are actually HUB-to-PCI ones, according
- * to Intel terminology. These devices do forward all addresses from
- * system to PCI bus no matter what are their window settings, so they are
- * "transparent" (or subtractive decoding) from programmers point of view.
- */
-static void __devinit pci_fixup_transparent_bridge(struct pci_dev *dev)
-{
- if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI &&
- (dev->device & 0xff00) == 0x2400)
- dev->transparent = 1;
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_fixup_transparent_bridge);
-
-/*
- * Fixup for C1 Halt Disconnect problem on nForce2 systems.
- *
- * From information provided by "Allen Martin" <AMartin@nvidia.com>:
- *
- * A hang is caused when the CPU generates a very fast CONNECT/HALT cycle
- * sequence. Workaround is to set the SYSTEM_IDLE_TIMEOUT to 80 ns.
- * This allows the state-machine and timer to return to a proper state within
- * 80 ns of the CONNECT and probe appearing together. Since the CPU will not
- * issue another HALT within 80 ns of the initial HALT, the failure condition
- * is avoided.
- */
-static void pci_fixup_nforce2(struct pci_dev *dev)
-{
- u32 val;
-
- /*
- * Chip Old value New value
- * C17 0x1F0FFF01 0x1F01FF01
- * C18D 0x9F0FFF01 0x9F01FF01
- *
- * Northbridge chip version may be determined by
- * reading the PCI revision ID (0xC1 or greater is C18D).
- */
- pci_read_config_dword(dev, 0x6c, &val);
-
- /*
- * Apply fixup if needed, but don't touch disconnect state
- */
- if ((val & 0x00FF0000) != 0x00010000) {
- printk(KERN_WARNING "PCI: nForce2 C1 Halt Disconnect fixup\n");
- pci_write_config_dword(dev, 0x6c, (val & 0xFF00FFFF) | 0x00010000);
- }
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2, pci_fixup_nforce2);
-DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2, pci_fixup_nforce2);
-
-/* Max PCI Express root ports */
-#define MAX_PCIEROOT 6
-static int quirk_aspm_offset[MAX_PCIEROOT << 3];
-
-#define GET_INDEX(a, b) ((((a) - PCI_DEVICE_ID_INTEL_MCH_PA) << 3) + ((b) & 7))
-
-static int quirk_pcie_aspm_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
-{
- return raw_pci_ops->read(0, bus->number, devfn, where, size, value);
-}
-
-/*
- * Replace the original pci bus ops for write with a new one that will filter
- * the request to insure ASPM cannot be enabled.
- */
-static int quirk_pcie_aspm_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value)
-{
- u8 offset;
-
- offset = quirk_aspm_offset[GET_INDEX(bus->self->device, devfn)];
-
- if ((offset) && (where == offset))
- value = value & 0xfffffffc;
-
- return raw_pci_ops->write(0, bus->number, devfn, where, size, value);
-}
-
-static struct pci_ops quirk_pcie_aspm_ops = {
- .read = quirk_pcie_aspm_read,
- .write = quirk_pcie_aspm_write,
-};
-
-/*
- * Prevents PCI Express ASPM (Active State Power Management) being enabled.
- *
- * Save the register offset, where the ASPM control bits are located,
- * for each PCI Express device that is in the device list of
- * the root port in an array for fast indexing. Replace the bus ops
- * with the modified one.
- */
-static void pcie_rootport_aspm_quirk(struct pci_dev *pdev)
-{
- int cap_base, i;
- struct pci_bus *pbus;
- struct pci_dev *dev;
-
- if ((pbus = pdev->subordinate) == NULL)
- return;
-
- /*
- * Check if the DID of pdev matches one of the six root ports. This
- * check is needed in the case this function is called directly by the
- * hot-plug driver.
- */
- if ((pdev->device < PCI_DEVICE_ID_INTEL_MCH_PA) ||
- (pdev->device > PCI_DEVICE_ID_INTEL_MCH_PC1))
- return;
-
- if (list_empty(&pbus->devices)) {
- /*
- * If no device is attached to the root port at power-up or
- * after hot-remove, the pbus->devices is empty and this code
- * will set the offsets to zero and the bus ops to parent's bus
- * ops, which is unmodified.
- */
- for (i= GET_INDEX(pdev->device, 0); i <= GET_INDEX(pdev->device, 7); ++i)
- quirk_aspm_offset[i] = 0;
-
- pbus->ops = pbus->parent->ops;
- } else {
- /*
- * If devices are attached to the root port at power-up or
- * after hot-add, the code loops through the device list of
- * each root port to save the register offsets and replace the
- * bus ops.
- */
- list_for_each_entry(dev, &pbus->devices, bus_list) {
- /* There are 0 to 8 devices attached to this bus */
- cap_base = pci_find_capability(dev, PCI_CAP_ID_EXP);
- quirk_aspm_offset[GET_INDEX(pdev->device, dev->devfn)]= cap_base + 0x10;
- }
- pbus->ops = &quirk_pcie_aspm_ops;
- }
-}
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MCH_PA, pcie_rootport_aspm_quirk );
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MCH_PA1, pcie_rootport_aspm_quirk );
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MCH_PB, pcie_rootport_aspm_quirk );
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MCH_PB1, pcie_rootport_aspm_quirk );
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MCH_PC, pcie_rootport_aspm_quirk );
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MCH_PC1, pcie_rootport_aspm_quirk );
-
-/*
- * Fixup to mark boot BIOS video selected by BIOS before it changes
- *
- * From information provided by "Jon Smirl" <jonsmirl@gmail.com>
- *
- * The standard boot ROM sequence for an x86 machine uses the BIOS
- * to select an initial video card for boot display. This boot video
- * card will have it's BIOS copied to C0000 in system RAM.
- * IORESOURCE_ROM_SHADOW is used to associate the boot video
- * card with this copy. On laptops this copy has to be used since
- * the main ROM may be compressed or combined with another image.
- * See pci_map_rom() for use of this flag. IORESOURCE_ROM_SHADOW
- * is marked here since the boot video device will be the only enabled
- * video device at this point.
- */
-
-static void __devinit pci_fixup_video(struct pci_dev *pdev)
-{
- struct pci_dev *bridge;
- struct pci_bus *bus;
- u16 config;
-
- if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
- return;
-
- /* Is VGA routed to us? */
- bus = pdev->bus;
- while (bus) {
- bridge = bus->self;
-
- /*
- * From information provided by
- * "David Miller" <davem@davemloft.net>
- * The bridge control register is valid for PCI header
- * type BRIDGE, or CARDBUS. Host to PCI controllers use
- * PCI header type NORMAL.
- */
- if (bridge
- &&((bridge->hdr_type == PCI_HEADER_TYPE_BRIDGE)
- ||(bridge->hdr_type == PCI_HEADER_TYPE_CARDBUS))) {
- pci_read_config_word(bridge, PCI_BRIDGE_CONTROL,
- &config);
- if (!(config & PCI_BRIDGE_CTL_VGA))
- return;
- }
- bus = bus->parent;
- }
- pci_read_config_word(pdev, PCI_COMMAND, &config);
- if (config & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) {
- pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_SHADOW;
- printk(KERN_DEBUG "Boot video device is %s\n", pci_name(pdev));
- }
-}
-DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, pci_fixup_video);
-
-/*
- * Some Toshiba laptops need extra code to enable their TI TSB43AB22/A.
- *
- * We pretend to bring them out of full D3 state, and restore the proper
- * IRQ, PCI cache line size, and BARs, otherwise the device won't function
- * properly. In some cases, the device will generate an interrupt on
- * the wrong IRQ line, causing any devices sharing the line it's
- * *supposed* to use to be disabled by the kernel's IRQ debug code.
- */
-static u16 toshiba_line_size;
-
-static struct dmi_system_id __devinitdata toshiba_ohci1394_dmi_table[] = {
- {
- .ident = "Toshiba PS5 based laptop",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "PS5"),
- },
- },
- {
- .ident = "Toshiba PSM4 based laptop",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "PSM4"),
- },
- },
- {
- .ident = "Toshiba A40 based laptop",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "PSA40U"),
- },
- },
- { }
-};
-
-static void __devinit pci_pre_fixup_toshiba_ohci1394(struct pci_dev *dev)
-{
- if (!dmi_check_system(toshiba_ohci1394_dmi_table))
- return; /* only applies to certain Toshibas (so far) */
-
- dev->current_state = PCI_D3cold;
- pci_read_config_word(dev, PCI_CACHE_LINE_SIZE, &toshiba_line_size);
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, 0x8032,
- pci_pre_fixup_toshiba_ohci1394);
-
-static void __devinit pci_post_fixup_toshiba_ohci1394(struct pci_dev *dev)
-{
- if (!dmi_check_system(toshiba_ohci1394_dmi_table))
- return; /* only applies to certain Toshibas (so far) */
-
- /* Restore config space on Toshiba laptops */
- pci_write_config_word(dev, PCI_CACHE_LINE_SIZE, toshiba_line_size);
- pci_read_config_byte(dev, PCI_INTERRUPT_LINE, (u8 *)&dev->irq);
- pci_write_config_dword(dev, PCI_BASE_ADDRESS_0,
- pci_resource_start(dev, 0));
- pci_write_config_dword(dev, PCI_BASE_ADDRESS_1,
- pci_resource_start(dev, 1));
-}
-DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_TI, 0x8032,
- pci_post_fixup_toshiba_ohci1394);
-
-
-/*
- * Prevent the BIOS trapping accesses to the Cyrix CS5530A video device
- * configuration space.
- */
-static void pci_early_fixup_cyrix_5530(struct pci_dev *dev)
-{
- u8 r;
- /* clear 'F4 Video Configuration Trap' bit */
- pci_read_config_byte(dev, 0x42, &r);
- r &= 0xfd;
- pci_write_config_byte(dev, 0x42, r);
-}
-DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY,
- pci_early_fixup_cyrix_5530);
-DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY,
- pci_early_fixup_cyrix_5530);
-
-/*
- * Siemens Nixdorf AG FSC Multiprocessor Interrupt Controller:
- * prevent update of the BAR0, which doesn't look like a normal BAR.
- */
-static void __devinit pci_siemens_interrupt_controller(struct pci_dev *dev)
-{
- dev->resource[0].flags |= IORESOURCE_PCI_FIXED;
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SIEMENS, 0x0015,
- pci_siemens_interrupt_controller);
+++ /dev/null
-/*
- * Low-Level PCI Access for i386 machines
- *
- * Copyright 1993, 1994 Drew Eckhardt
- * Visionary Computing
- * (Unix and Linux consulting and custom programming)
- * Drew@Colorado.EDU
- * +1 (303) 786-7975
- *
- * Drew's work was sponsored by:
- * iX Multiuser Multitasking Magazine
- * Hannover, Germany
- * hm@ix.de
- *
- * Copyright 1997--2000 Martin Mares <mj@ucw.cz>
- *
- * For more information, please consult the following manuals (look at
- * http://www.pcisig.com/ for how to get them):
- *
- * PCI BIOS Specification
- * PCI Local Bus Specification
- * PCI to PCI Bridge Specification
- * PCI System Design Guide
- *
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/ioport.h>
-#include <linux/errno.h>
-
-#include "pci.h"
-
-/*
- * We need to avoid collisions with `mirrored' VGA ports
- * and other strange ISA hardware, so we always want the
- * addresses to be allocated in the 0x000-0x0ff region
- * modulo 0x400.
- *
- * Why? Because some silly external IO cards only decode
- * the low 10 bits of the IO address. The 0x00-0xff region
- * is reserved for motherboard devices that decode all 16
- * bits, so it's ok to allocate at, say, 0x2800-0x28ff,
- * but we want to try to avoid allocating at 0x2900-0x2bff
- * which might have be mirrored at 0x0100-0x03ff..
- */
-void
-pcibios_align_resource(void *data, struct resource *res,
- resource_size_t size, resource_size_t align)
-{
- if (res->flags & IORESOURCE_IO) {
- resource_size_t start = res->start;
-
- if (start & 0x300) {
- start = (start + 0x3ff) & ~0x3ff;
- res->start = start;
- }
- }
-}
-
-
-/*
- * Handle resources of PCI devices. If the world were perfect, we could
- * just allocate all the resource regions and do nothing more. It isn't.
- * On the other hand, we cannot just re-allocate all devices, as it would
- * require us to know lots of host bridge internals. So we attempt to
- * keep as much of the original configuration as possible, but tweak it
- * when it's found to be wrong.
- *
- * Known BIOS problems we have to work around:
- * - I/O or memory regions not configured
- * - regions configured, but not enabled in the command register
- * - bogus I/O addresses above 64K used
- * - expansion ROMs left enabled (this may sound harmless, but given
- * the fact the PCI specs explicitly allow address decoders to be
- * shared between expansion ROMs and other resource regions, it's
- * at least dangerous)
- *
- * Our solution:
- * (1) Allocate resources for all buses behind PCI-to-PCI bridges.
- * This gives us fixed barriers on where we can allocate.
- * (2) Allocate resources for all enabled devices. If there is
- * a collision, just mark the resource as unallocated. Also
- * disable expansion ROMs during this step.
- * (3) Try to allocate resources for disabled devices. If the
- * resources were assigned correctly, everything goes well,
- * if they weren't, they won't disturb allocation of other
- * resources.
- * (4) Assign new addresses to resources which were either
- * not configured at all or misconfigured. If explicitly
- * requested by the user, configure expansion ROM address
- * as well.
- */
-
-static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
-{
- struct pci_bus *bus;
- struct pci_dev *dev;
- int idx;
- struct resource *r, *pr;
-
- /* Depth-First Search on bus tree */
- list_for_each_entry(bus, bus_list, node) {
- if ((dev = bus->self)) {
- for (idx = PCI_BRIDGE_RESOURCES;
- idx < PCI_NUM_RESOURCES; idx++) {
- r = &dev->resource[idx];
- if (!r->flags)
- continue;
- pr = pci_find_parent_resource(dev, r);
- if (!r->start || !pr ||
- request_resource(pr, r) < 0) {
- printk(KERN_ERR "PCI: Cannot allocate "
- "resource region %d "
- "of bridge %s\n",
- idx, pci_name(dev));
- /*
- * Something is wrong with the region.
- * Invalidate the resource to prevent
- * child resource allocations in this
- * range.
- */
- r->flags = 0;
- }
- }
- }
- pcibios_allocate_bus_resources(&bus->children);
- }
-}
-
-static void __init pcibios_allocate_resources(int pass)
-{
- struct pci_dev *dev = NULL;
- int idx, disabled;
- u16 command;
- struct resource *r, *pr;
-
- for_each_pci_dev(dev) {
- pci_read_config_word(dev, PCI_COMMAND, &command);
- for (idx = 0; idx < PCI_ROM_RESOURCE; idx++) {
- r = &dev->resource[idx];
- if (r->parent) /* Already allocated */
- continue;
- if (!r->start) /* Address not assigned at all */
- continue;
- if (r->flags & IORESOURCE_IO)
- disabled = !(command & PCI_COMMAND_IO);
- else
- disabled = !(command & PCI_COMMAND_MEMORY);
- if (pass == disabled) {
- DBG("PCI: Resource %08lx-%08lx "
- "(f=%lx, d=%d, p=%d)\n",
- r->start, r->end, r->flags, disabled, pass);
- pr = pci_find_parent_resource(dev, r);
- if (!pr || request_resource(pr, r) < 0) {
- printk(KERN_ERR "PCI: Cannot allocate "
- "resource region %d "
- "of device %s\n",
- idx, pci_name(dev));
- /* We'll assign a new address later */
- r->end -= r->start;
- r->start = 0;
- }
- }
- }
- if (!pass) {
- r = &dev->resource[PCI_ROM_RESOURCE];
- if (r->flags & IORESOURCE_ROM_ENABLE) {
- /* Turn the ROM off, leave the resource region,
- * but keep it unregistered. */
- u32 reg;
- DBG("PCI: Switching off ROM of %s\n",
- pci_name(dev));
- r->flags &= ~IORESOURCE_ROM_ENABLE;
- pci_read_config_dword(dev,
- dev->rom_base_reg, ®);
- pci_write_config_dword(dev, dev->rom_base_reg,
- reg & ~PCI_ROM_ADDRESS_ENABLE);
- }
- }
- }
-}
-
-static int __init pcibios_assign_resources(void)
-{
- struct pci_dev *dev = NULL;
- struct resource *r, *pr;
-
- if (!(pci_probe & PCI_ASSIGN_ROMS)) {
- /*
- * Try to use BIOS settings for ROMs, otherwise let
- * pci_assign_unassigned_resources() allocate the new
- * addresses.
- */
- for_each_pci_dev(dev) {
- r = &dev->resource[PCI_ROM_RESOURCE];
- if (!r->flags || !r->start)
- continue;
- pr = pci_find_parent_resource(dev, r);
- if (!pr || request_resource(pr, r) < 0) {
- r->end -= r->start;
- r->start = 0;
- }
- }
- }
-
- pci_assign_unassigned_resources();
-
- return 0;
-}
-
-void __init pcibios_resource_survey(void)
-{
- DBG("PCI: Allocating resources\n");
- pcibios_allocate_bus_resources(&pci_root_buses);
- pcibios_allocate_resources(0);
- pcibios_allocate_resources(1);
-}
-
-/**
- * called in fs_initcall (one below subsys_initcall),
- * give a chance for motherboard reserve resources
- */
-fs_initcall(pcibios_assign_resources);
-
-int pcibios_enable_resources(struct pci_dev *dev, int mask)
-{
- u16 cmd, old_cmd;
- int idx;
- struct resource *r;
-
- pci_read_config_word(dev, PCI_COMMAND, &cmd);
- old_cmd = cmd;
- for (idx = 0; idx < PCI_NUM_RESOURCES; idx++) {
- /* Only set up the requested stuff */
- if (!(mask & (1 << idx)))
- continue;
-
- r = &dev->resource[idx];
- if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM)))
- continue;
- if ((idx == PCI_ROM_RESOURCE) &&
- (!(r->flags & IORESOURCE_ROM_ENABLE)))
- continue;
- if (!r->start && r->end) {
- printk(KERN_ERR "PCI: Device %s not available "
- "because of resource %d collisions\n",
- pci_name(dev), idx);
- return -EINVAL;
- }
- if (r->flags & IORESOURCE_IO)
- cmd |= PCI_COMMAND_IO;
- if (r->flags & IORESOURCE_MEM)
- cmd |= PCI_COMMAND_MEMORY;
- }
- if (cmd != old_cmd) {
- printk("PCI: Enabling device %s (%04x -> %04x)\n",
- pci_name(dev), old_cmd, cmd);
- pci_write_config_word(dev, PCI_COMMAND, cmd);
- }
- return 0;
-}
-
-/*
- * If we set up a device for bus mastering, we need to check the latency
- * timer as certain crappy BIOSes forget to set it properly.
- */
-unsigned int pcibios_max_latency = 255;
-
-void pcibios_set_master(struct pci_dev *dev)
-{
- u8 lat;
- pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
- if (lat < 16)
- lat = (64 <= pcibios_max_latency) ? 64 : pcibios_max_latency;
- else if (lat > pcibios_max_latency)
- lat = pcibios_max_latency;
- else
- return;
- printk(KERN_DEBUG "PCI: Setting latency timer of device %s to %d\n",
- pci_name(dev), lat);
- pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat);
-}
-
-int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
- enum pci_mmap_state mmap_state, int write_combine)
-{
- unsigned long prot;
-
- /* I/O space cannot be accessed via normal processor loads and
- * stores on this platform.
- */
- if (mmap_state == pci_mmap_io)
- return -EINVAL;
-
- /* Leave vm_pgoff as-is, the PCI space address is the physical
- * address on this platform.
- */
- prot = pgprot_val(vma->vm_page_prot);
- if (boot_cpu_data.x86 > 3)
- prot |= _PAGE_PCD | _PAGE_PWT;
- vma->vm_page_prot = __pgprot(prot);
-
- /* Write-combine setting is ignored, it is changed via the mtrr
- * interfaces on this platform.
- */
- if (io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
- vma->vm_end - vma->vm_start,
- vma->vm_page_prot))
- return -EAGAIN;
-
- return 0;
-}
+++ /dev/null
-#include <linux/pci.h>
-#include <linux/init.h>
-#include "pci.h"
-
-/* arch_initcall has too random ordering, so call the initializers
- in the right sequence from here. */
-static __init int pci_access_init(void)
-{
- int type __maybe_unused = 0;
-
-#ifdef CONFIG_PCI_DIRECT
- type = pci_direct_probe();
-#endif
-#ifdef CONFIG_PCI_MMCONFIG
- pci_mmcfg_init(type);
-#endif
- if (raw_pci_ops)
- return 0;
-#ifdef CONFIG_PCI_BIOS
- pci_pcbios_init();
-#endif
- /*
- * don't check for raw_pci_ops here because we want pcbios as last
- * fallback, yet it's needed to run first to set pcibios_last_bus
- * in case legacy PCI probing is used. otherwise detecting peer busses
- * fails.
- */
-#ifdef CONFIG_PCI_DIRECT
- pci_direct_init(type);
-#endif
- if (!raw_pci_ops)
- printk(KERN_ERR
- "PCI: Fatal: No config space access function found\n");
-
- return 0;
-}
-arch_initcall(pci_access_init);
+++ /dev/null
-/*
- * Low-Level PCI Support for PC -- Routing of Interrupts
- *
- * (c) 1999--2000 Martin Mares <mj@ucw.cz>
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/dmi.h>
-#include <asm/io.h>
-#include <asm/smp.h>
-#include <asm/io_apic.h>
-#include <linux/irq.h>
-#include <linux/acpi.h>
-
-#include "pci.h"
-
-#define PIRQ_SIGNATURE (('$' << 0) + ('P' << 8) + ('I' << 16) + ('R' << 24))
-#define PIRQ_VERSION 0x0100
-
-static int broken_hp_bios_irq9;
-static int acer_tm360_irqrouting;
-
-static struct irq_routing_table *pirq_table;
-
-static int pirq_enable_irq(struct pci_dev *dev);
-
-/*
- * Never use: 0, 1, 2 (timer, keyboard, and cascade)
- * Avoid using: 13, 14 and 15 (FP error and IDE).
- * Penalize: 3, 4, 6, 7, 12 (known ISA uses: serial, floppy, parallel and mouse)
- */
-unsigned int pcibios_irq_mask = 0xfff8;
-
-static int pirq_penalty[16] = {
- 1000000, 1000000, 1000000, 1000, 1000, 0, 1000, 1000,
- 0, 0, 0, 0, 1000, 100000, 100000, 100000
-};
-
-struct irq_router {
- char *name;
- u16 vendor, device;
- int (*get)(struct pci_dev *router, struct pci_dev *dev, int pirq);
- int (*set)(struct pci_dev *router, struct pci_dev *dev, int pirq, int new);
-};
-
-struct irq_router_handler {
- u16 vendor;
- int (*probe)(struct irq_router *r, struct pci_dev *router, u16 device);
-};
-
-int (*pcibios_enable_irq)(struct pci_dev *dev) = NULL;
-void (*pcibios_disable_irq)(struct pci_dev *dev) = NULL;
-
-/*
- * Check passed address for the PCI IRQ Routing Table signature
- * and perform checksum verification.
- */
-
-static inline struct irq_routing_table * pirq_check_routing_table(u8 *addr)
-{
- struct irq_routing_table *rt;
- int i;
- u8 sum;
-
- rt = (struct irq_routing_table *) addr;
- if (rt->signature != PIRQ_SIGNATURE ||
- rt->version != PIRQ_VERSION ||
- rt->size % 16 ||
- rt->size < sizeof(struct irq_routing_table))
- return NULL;
- sum = 0;
- for (i=0; i < rt->size; i++)
- sum += addr[i];
- if (!sum) {
- DBG(KERN_DEBUG "PCI: Interrupt Routing Table found at 0x%p\n", rt);
- return rt;
- }
- return NULL;
-}
-
-
-
-/*
- * Search 0xf0000 -- 0xfffff for the PCI IRQ Routing Table.
- */
-
-static struct irq_routing_table * __init pirq_find_routing_table(void)
-{
- u8 *addr;
- struct irq_routing_table *rt;
-
- if (pirq_table_addr) {
- rt = pirq_check_routing_table((u8 *) __va(pirq_table_addr));
- if (rt)
- return rt;
- printk(KERN_WARNING "PCI: PIRQ table NOT found at pirqaddr\n");
- }
- for(addr = (u8 *) __va(0xf0000); addr < (u8 *) __va(0x100000); addr += 16) {
- rt = pirq_check_routing_table(addr);
- if (rt)
- return rt;
- }
- return NULL;
-}
-
-/*
- * If we have a IRQ routing table, use it to search for peer host
- * bridges. It's a gross hack, but since there are no other known
- * ways how to get a list of buses, we have to go this way.
- */
-
-static void __init pirq_peer_trick(void)
-{
- struct irq_routing_table *rt = pirq_table;
- u8 busmap[256];
- int i;
- struct irq_info *e;
-
- memset(busmap, 0, sizeof(busmap));
- for(i=0; i < (rt->size - sizeof(struct irq_routing_table)) / sizeof(struct irq_info); i++) {
- e = &rt->slots[i];
-#ifdef DEBUG
- {
- int j;
- DBG(KERN_DEBUG "%02x:%02x slot=%02x", e->bus, e->devfn/8, e->slot);
- for(j=0; j<4; j++)
- DBG(" %d:%02x/%04x", j, e->irq[j].link, e->irq[j].bitmap);
- DBG("\n");
- }
-#endif
- busmap[e->bus] = 1;
- }
- for(i = 1; i < 256; i++) {
- if (!busmap[i] || pci_find_bus(0, i))
- continue;
- if (pci_scan_bus_with_sysdata(i))
- printk(KERN_INFO "PCI: Discovered primary peer "
- "bus %02x [IRQ]\n", i);
- }
- pcibios_last_bus = -1;
-}
-
-/*
- * Code for querying and setting of IRQ routes on various interrupt routers.
- */
-
-void eisa_set_level_irq(unsigned int irq)
-{
- unsigned char mask = 1 << (irq & 7);
- unsigned int port = 0x4d0 + (irq >> 3);
- unsigned char val;
- static u16 eisa_irq_mask;
-
- if (irq >= 16 || (1 << irq) & eisa_irq_mask)
- return;
-
- eisa_irq_mask |= (1 << irq);
- printk(KERN_DEBUG "PCI: setting IRQ %u as level-triggered\n", irq);
- val = inb(port);
- if (!(val & mask)) {
- DBG(KERN_DEBUG " -> edge");
- outb(val | mask, port);
- }
-}
-
-/*
- * Common IRQ routing practice: nybbles in config space,
- * offset by some magic constant.
- */
-static unsigned int read_config_nybble(struct pci_dev *router, unsigned offset, unsigned nr)
-{
- u8 x;
- unsigned reg = offset + (nr >> 1);
-
- pci_read_config_byte(router, reg, &x);
- return (nr & 1) ? (x >> 4) : (x & 0xf);
-}
-
-static void write_config_nybble(struct pci_dev *router, unsigned offset, unsigned nr, unsigned int val)
-{
- u8 x;
- unsigned reg = offset + (nr >> 1);
-
- pci_read_config_byte(router, reg, &x);
- x = (nr & 1) ? ((x & 0x0f) | (val << 4)) : ((x & 0xf0) | val);
- pci_write_config_byte(router, reg, x);
-}
-
-/*
- * ALI pirq entries are damn ugly, and completely undocumented.
- * This has been figured out from pirq tables, and it's not a pretty
- * picture.
- */
-static int pirq_ali_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- static const unsigned char irqmap[16] = { 0, 9, 3, 10, 4, 5, 7, 6, 1, 11, 0, 12, 0, 14, 0, 15 };
-
- return irqmap[read_config_nybble(router, 0x48, pirq-1)];
-}
-
-static int pirq_ali_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
-{
- static const unsigned char irqmap[16] = { 0, 8, 0, 2, 4, 5, 7, 6, 0, 1, 3, 9, 11, 0, 13, 15 };
- unsigned int val = irqmap[irq];
-
- if (val) {
- write_config_nybble(router, 0x48, pirq-1, val);
- return 1;
- }
- return 0;
-}
-
-/*
- * The Intel PIIX4 pirq rules are fairly simple: "pirq" is
- * just a pointer to the config space.
- */
-static int pirq_piix_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- u8 x;
-
- pci_read_config_byte(router, pirq, &x);
- return (x < 16) ? x : 0;
-}
-
-static int pirq_piix_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
-{
- pci_write_config_byte(router, pirq, irq);
- return 1;
-}
-
-/*
- * The VIA pirq rules are nibble-based, like ALI,
- * but without the ugly irq number munging.
- * However, PIRQD is in the upper instead of lower 4 bits.
- */
-static int pirq_via_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- return read_config_nybble(router, 0x55, pirq == 4 ? 5 : pirq);
-}
-
-static int pirq_via_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
-{
- write_config_nybble(router, 0x55, pirq == 4 ? 5 : pirq, irq);
- return 1;
-}
-
-/*
- * The VIA pirq rules are nibble-based, like ALI,
- * but without the ugly irq number munging.
- * However, for 82C586, nibble map is different .
- */
-static int pirq_via586_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- static const unsigned int pirqmap[5] = { 3, 2, 5, 1, 1 };
- return read_config_nybble(router, 0x55, pirqmap[pirq-1]);
-}
-
-static int pirq_via586_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
-{
- static const unsigned int pirqmap[5] = { 3, 2, 5, 1, 1 };
- write_config_nybble(router, 0x55, pirqmap[pirq-1], irq);
- return 1;
-}
-
-/*
- * ITE 8330G pirq rules are nibble-based
- * FIXME: pirqmap may be { 1, 0, 3, 2 },
- * 2+3 are both mapped to irq 9 on my system
- */
-static int pirq_ite_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- static const unsigned char pirqmap[4] = { 1, 0, 2, 3 };
- return read_config_nybble(router,0x43, pirqmap[pirq-1]);
-}
-
-static int pirq_ite_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
-{
- static const unsigned char pirqmap[4] = { 1, 0, 2, 3 };
- write_config_nybble(router, 0x43, pirqmap[pirq-1], irq);
- return 1;
-}
-
-/*
- * OPTI: high four bits are nibble pointer..
- * I wonder what the low bits do?
- */
-static int pirq_opti_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- return read_config_nybble(router, 0xb8, pirq >> 4);
-}
-
-static int pirq_opti_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
-{
- write_config_nybble(router, 0xb8, pirq >> 4, irq);
- return 1;
-}
-
-/*
- * Cyrix: nibble offset 0x5C
- * 0x5C bits 7:4 is INTB bits 3:0 is INTA
- * 0x5D bits 7:4 is INTD bits 3:0 is INTC
- */
-static int pirq_cyrix_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- return read_config_nybble(router, 0x5C, (pirq-1)^1);
-}
-
-static int pirq_cyrix_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
-{
- write_config_nybble(router, 0x5C, (pirq-1)^1, irq);
- return 1;
-}
-
-/*
- * PIRQ routing for SiS 85C503 router used in several SiS chipsets.
- * We have to deal with the following issues here:
- * - vendors have different ideas about the meaning of link values
- * - some onboard devices (integrated in the chipset) have special
- * links and are thus routed differently (i.e. not via PCI INTA-INTD)
- * - different revision of the router have a different layout for
- * the routing registers, particularly for the onchip devices
- *
- * For all routing registers the common thing is we have one byte
- * per routeable link which is defined as:
- * bit 7 IRQ mapping enabled (0) or disabled (1)
- * bits [6:4] reserved (sometimes used for onchip devices)
- * bits [3:0] IRQ to map to
- * allowed: 3-7, 9-12, 14-15
- * reserved: 0, 1, 2, 8, 13
- *
- * The config-space registers located at 0x41/0x42/0x43/0x44 are
- * always used to route the normal PCI INT A/B/C/D respectively.
- * Apparently there are systems implementing PCI routing table using
- * link values 0x01-0x04 and others using 0x41-0x44 for PCI INTA..D.
- * We try our best to handle both link mappings.
- *
- * Currently (2003-05-21) it appears most SiS chipsets follow the
- * definition of routing registers from the SiS-5595 southbridge.
- * According to the SiS 5595 datasheets the revision id's of the
- * router (ISA-bridge) should be 0x01 or 0xb0.
- *
- * Furthermore we've also seen lspci dumps with revision 0x00 and 0xb1.
- * Looks like these are used in a number of SiS 5xx/6xx/7xx chipsets.
- * They seem to work with the current routing code. However there is
- * some concern because of the two USB-OHCI HCs (original SiS 5595
- * had only one). YMMV.
- *
- * Onchip routing for router rev-id 0x01/0xb0 and probably 0x00/0xb1:
- *
- * 0x61: IDEIRQ:
- * bits [6:5] must be written 01
- * bit 4 channel-select primary (0), secondary (1)
- *
- * 0x62: USBIRQ:
- * bit 6 OHCI function disabled (0), enabled (1)
- *
- * 0x6a: ACPI/SCI IRQ: bits 4-6 reserved
- *
- * 0x7e: Data Acq. Module IRQ - bits 4-6 reserved
- *
- * We support USBIRQ (in addition to INTA-INTD) and keep the
- * IDE, ACPI and DAQ routing untouched as set by the BIOS.
- *
- * Currently the only reported exception is the new SiS 65x chipset
- * which includes the SiS 69x southbridge. Here we have the 85C503
- * router revision 0x04 and there are changes in the register layout
- * mostly related to the different USB HCs with USB 2.0 support.
- *
- * Onchip routing for router rev-id 0x04 (try-and-error observation)
- *
- * 0x60/0x61/0x62/0x63: 1xEHCI and 3xOHCI (companion) USB-HCs
- * bit 6-4 are probably unused, not like 5595
- */
-
-#define PIRQ_SIS_IRQ_MASK 0x0f
-#define PIRQ_SIS_IRQ_DISABLE 0x80
-#define PIRQ_SIS_USB_ENABLE 0x40
-
-static int pirq_sis_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- u8 x;
- int reg;
-
- reg = pirq;
- if (reg >= 0x01 && reg <= 0x04)
- reg += 0x40;
- pci_read_config_byte(router, reg, &x);
- return (x & PIRQ_SIS_IRQ_DISABLE) ? 0 : (x & PIRQ_SIS_IRQ_MASK);
-}
-
-static int pirq_sis_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
-{
- u8 x;
- int reg;
-
- reg = pirq;
- if (reg >= 0x01 && reg <= 0x04)
- reg += 0x40;
- pci_read_config_byte(router, reg, &x);
- x &= ~(PIRQ_SIS_IRQ_MASK | PIRQ_SIS_IRQ_DISABLE);
- x |= irq ? irq: PIRQ_SIS_IRQ_DISABLE;
- pci_write_config_byte(router, reg, x);
- return 1;
-}
-
-
-/*
- * VLSI: nibble offset 0x74 - educated guess due to routing table and
- * config space of VLSI 82C534 PCI-bridge/router (1004:0102)
- * Tested on HP OmniBook 800 covering PIRQ 1, 2, 4, 8 for onboard
- * devices, PIRQ 3 for non-pci(!) soundchip and (untested) PIRQ 6
- * for the busbridge to the docking station.
- */
-
-static int pirq_vlsi_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- if (pirq > 8) {
- printk(KERN_INFO "VLSI router pirq escape (%d)\n", pirq);
- return 0;
- }
- return read_config_nybble(router, 0x74, pirq-1);
-}
-
-static int pirq_vlsi_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
-{
- if (pirq > 8) {
- printk(KERN_INFO "VLSI router pirq escape (%d)\n", pirq);
- return 0;
- }
- write_config_nybble(router, 0x74, pirq-1, irq);
- return 1;
-}
-
-/*
- * ServerWorks: PCI interrupts mapped to system IRQ lines through Index
- * and Redirect I/O registers (0x0c00 and 0x0c01). The Index register
- * format is (PCIIRQ## | 0x10), e.g.: PCIIRQ10=0x1a. The Redirect
- * register is a straight binary coding of desired PIC IRQ (low nibble).
- *
- * The 'link' value in the PIRQ table is already in the correct format
- * for the Index register. There are some special index values:
- * 0x00 for ACPI (SCI), 0x01 for USB, 0x02 for IDE0, 0x04 for IDE1,
- * and 0x03 for SMBus.
- */
-static int pirq_serverworks_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- outb_p(pirq, 0xc00);
- return inb(0xc01) & 0xf;
-}
-
-static int pirq_serverworks_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
-{
- outb_p(pirq, 0xc00);
- outb_p(irq, 0xc01);
- return 1;
-}
-
-/* Support for AMD756 PCI IRQ Routing
- * Jhon H. Caicedo <jhcaiced@osso.org.co>
- * Jun/21/2001 0.2.0 Release, fixed to use "nybble" functions... (jhcaiced)
- * Jun/19/2001 Alpha Release 0.1.0 (jhcaiced)
- * The AMD756 pirq rules are nibble-based
- * offset 0x56 0-3 PIRQA 4-7 PIRQB
- * offset 0x57 0-3 PIRQC 4-7 PIRQD
- */
-static int pirq_amd756_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
-{
- u8 irq;
- irq = 0;
- if (pirq <= 4)
- {
- irq = read_config_nybble(router, 0x56, pirq - 1);
- }
- printk(KERN_INFO "AMD756: dev %04x:%04x, router pirq : %d get irq : %2d\n",
- dev->vendor, dev->device, pirq, irq);
- return irq;
-}
-
-static int pirq_amd756_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
-{
- printk(KERN_INFO "AMD756: dev %04x:%04x, router pirq : %d SET irq : %2d\n",
- dev->vendor, dev->device, pirq, irq);
- if (pirq <= 4)
- {
- write_config_nybble(router, 0x56, pirq - 1, irq);
- }
- return 1;
-}
-
-#ifdef CONFIG_PCI_BIOS
-
-static int pirq_bios_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
-{
- struct pci_dev *bridge;
- int pin = pci_get_interrupt_pin(dev, &bridge);
- return pcibios_set_irq_routing(bridge, pin, irq);
-}
-
-#endif
-
-static __init int intel_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
-{
- static struct pci_device_id __initdata pirq_440gx[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443GX_0) },
- { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443GX_2) },
- { },
- };
-
- /* 440GX has a proprietary PIRQ router -- don't use it */
- if (pci_dev_present(pirq_440gx))
- return 0;
-
- switch(device)
- {
- case PCI_DEVICE_ID_INTEL_82371FB_0:
- case PCI_DEVICE_ID_INTEL_82371SB_0:
- case PCI_DEVICE_ID_INTEL_82371AB_0:
- case PCI_DEVICE_ID_INTEL_82371MX:
- case PCI_DEVICE_ID_INTEL_82443MX_0:
- case PCI_DEVICE_ID_INTEL_82801AA_0:
- case PCI_DEVICE_ID_INTEL_82801AB_0:
- case PCI_DEVICE_ID_INTEL_82801BA_0:
- case PCI_DEVICE_ID_INTEL_82801BA_10:
- case PCI_DEVICE_ID_INTEL_82801CA_0:
- case PCI_DEVICE_ID_INTEL_82801CA_12:
- case PCI_DEVICE_ID_INTEL_82801DB_0:
- case PCI_DEVICE_ID_INTEL_82801E_0:
- case PCI_DEVICE_ID_INTEL_82801EB_0:
- case PCI_DEVICE_ID_INTEL_ESB_1:
- case PCI_DEVICE_ID_INTEL_ICH6_0:
- case PCI_DEVICE_ID_INTEL_ICH6_1:
- case PCI_DEVICE_ID_INTEL_ICH7_0:
- case PCI_DEVICE_ID_INTEL_ICH7_1:
- case PCI_DEVICE_ID_INTEL_ICH7_30:
- case PCI_DEVICE_ID_INTEL_ICH7_31:
- case PCI_DEVICE_ID_INTEL_ESB2_0:
- case PCI_DEVICE_ID_INTEL_ICH8_0:
- case PCI_DEVICE_ID_INTEL_ICH8_1:
- case PCI_DEVICE_ID_INTEL_ICH8_2:
- case PCI_DEVICE_ID_INTEL_ICH8_3:
- case PCI_DEVICE_ID_INTEL_ICH8_4:
- case PCI_DEVICE_ID_INTEL_ICH9_0:
- case PCI_DEVICE_ID_INTEL_ICH9_1:
- case PCI_DEVICE_ID_INTEL_ICH9_2:
- case PCI_DEVICE_ID_INTEL_ICH9_3:
- case PCI_DEVICE_ID_INTEL_ICH9_4:
- case PCI_DEVICE_ID_INTEL_ICH9_5:
- case PCI_DEVICE_ID_INTEL_TOLAPAI_0:
- r->name = "PIIX/ICH";
- r->get = pirq_piix_get;
- r->set = pirq_piix_set;
- return 1;
- }
- return 0;
-}
-
-static __init int via_router_probe(struct irq_router *r,
- struct pci_dev *router, u16 device)
-{
- /* FIXME: We should move some of the quirk fixup stuff here */
-
- /*
- * work arounds for some buggy BIOSes
- */
- if (device == PCI_DEVICE_ID_VIA_82C586_0) {
- switch(router->device) {
- case PCI_DEVICE_ID_VIA_82C686:
- /*
- * Asus k7m bios wrongly reports 82C686A
- * as 586-compatible
- */
- device = PCI_DEVICE_ID_VIA_82C686;
- break;
- case PCI_DEVICE_ID_VIA_8235:
- /**
- * Asus a7v-x bios wrongly reports 8235
- * as 586-compatible
- */
- device = PCI_DEVICE_ID_VIA_8235;
- break;
- }
- }
-
- switch(device) {
- case PCI_DEVICE_ID_VIA_82C586_0:
- r->name = "VIA";
- r->get = pirq_via586_get;
- r->set = pirq_via586_set;
- return 1;
- case PCI_DEVICE_ID_VIA_82C596:
- case PCI_DEVICE_ID_VIA_82C686:
- case PCI_DEVICE_ID_VIA_8231:
- case PCI_DEVICE_ID_VIA_8233A:
- case PCI_DEVICE_ID_VIA_8235:
- case PCI_DEVICE_ID_VIA_8237:
- /* FIXME: add new ones for 8233/5 */
- r->name = "VIA";
- r->get = pirq_via_get;
- r->set = pirq_via_set;
- return 1;
- }
- return 0;
-}
-
-static __init int vlsi_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
-{
- switch(device)
- {
- case PCI_DEVICE_ID_VLSI_82C534:
- r->name = "VLSI 82C534";
- r->get = pirq_vlsi_get;
- r->set = pirq_vlsi_set;
- return 1;
- }
- return 0;
-}
-
-
-static __init int serverworks_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
-{
- switch(device)
- {
- case PCI_DEVICE_ID_SERVERWORKS_OSB4:
- case PCI_DEVICE_ID_SERVERWORKS_CSB5:
- r->name = "ServerWorks";
- r->get = pirq_serverworks_get;
- r->set = pirq_serverworks_set;
- return 1;
- }
- return 0;
-}
-
-static __init int sis_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
-{
- if (device != PCI_DEVICE_ID_SI_503)
- return 0;
-
- r->name = "SIS";
- r->get = pirq_sis_get;
- r->set = pirq_sis_set;
- return 1;
-}
-
-static __init int cyrix_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
-{
- switch(device)
- {
- case PCI_DEVICE_ID_CYRIX_5520:
- r->name = "NatSemi";
- r->get = pirq_cyrix_get;
- r->set = pirq_cyrix_set;
- return 1;
- }
- return 0;
-}
-
-static __init int opti_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
-{
- switch(device)
- {
- case PCI_DEVICE_ID_OPTI_82C700:
- r->name = "OPTI";
- r->get = pirq_opti_get;
- r->set = pirq_opti_set;
- return 1;
- }
- return 0;
-}
-
-static __init int ite_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
-{
- switch(device)
- {
- case PCI_DEVICE_ID_ITE_IT8330G_0:
- r->name = "ITE";
- r->get = pirq_ite_get;
- r->set = pirq_ite_set;
- return 1;
- }
- return 0;
-}
-
-static __init int ali_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
-{
- switch(device)
- {
- case PCI_DEVICE_ID_AL_M1533:
- case PCI_DEVICE_ID_AL_M1563:
- printk(KERN_DEBUG "PCI: Using ALI IRQ Router\n");
- r->name = "ALI";
- r->get = pirq_ali_get;
- r->set = pirq_ali_set;
- return 1;
- }
- return 0;
-}
-
-static __init int amd_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
-{
- switch(device)
- {
- case PCI_DEVICE_ID_AMD_VIPER_740B:
- r->name = "AMD756";
- break;
- case PCI_DEVICE_ID_AMD_VIPER_7413:
- r->name = "AMD766";
- break;
- case PCI_DEVICE_ID_AMD_VIPER_7443:
- r->name = "AMD768";
- break;
- default:
- return 0;
- }
- r->get = pirq_amd756_get;
- r->set = pirq_amd756_set;
- return 1;
-}
-
-static __initdata struct irq_router_handler pirq_routers[] = {
- { PCI_VENDOR_ID_INTEL, intel_router_probe },
- { PCI_VENDOR_ID_AL, ali_router_probe },
- { PCI_VENDOR_ID_ITE, ite_router_probe },
- { PCI_VENDOR_ID_VIA, via_router_probe },
- { PCI_VENDOR_ID_OPTI, opti_router_probe },
- { PCI_VENDOR_ID_SI, sis_router_probe },
- { PCI_VENDOR_ID_CYRIX, cyrix_router_probe },
- { PCI_VENDOR_ID_VLSI, vlsi_router_probe },
- { PCI_VENDOR_ID_SERVERWORKS, serverworks_router_probe },
- { PCI_VENDOR_ID_AMD, amd_router_probe },
- /* Someone with docs needs to add the ATI Radeon IGP */
- { 0, NULL }
-};
-static struct irq_router pirq_router;
-static struct pci_dev *pirq_router_dev;
-
-
-/*
- * FIXME: should we have an option to say "generic for
- * chipset" ?
- */
-
-static void __init pirq_find_router(struct irq_router *r)
-{
- struct irq_routing_table *rt = pirq_table;
- struct irq_router_handler *h;
-
-#ifdef CONFIG_PCI_BIOS
- if (!rt->signature) {
- printk(KERN_INFO "PCI: Using BIOS for IRQ routing\n");
- r->set = pirq_bios_set;
- r->name = "BIOS";
- return;
- }
-#endif
-
- /* Default unless a driver reloads it */
- r->name = "default";
- r->get = NULL;
- r->set = NULL;
-
- DBG(KERN_DEBUG "PCI: Attempting to find IRQ router for %04x:%04x\n",
- rt->rtr_vendor, rt->rtr_device);
-
- pirq_router_dev = pci_get_bus_and_slot(rt->rtr_bus, rt->rtr_devfn);
- if (!pirq_router_dev) {
- DBG(KERN_DEBUG "PCI: Interrupt router not found at "
- "%02x:%02x\n", rt->rtr_bus, rt->rtr_devfn);
- return;
- }
-
- for( h = pirq_routers; h->vendor; h++) {
- /* First look for a router match */
- if (rt->rtr_vendor == h->vendor && h->probe(r, pirq_router_dev, rt->rtr_device))
- break;
- /* Fall back to a device match */
- if (pirq_router_dev->vendor == h->vendor && h->probe(r, pirq_router_dev, pirq_router_dev->device))
- break;
- }
- printk(KERN_INFO "PCI: Using IRQ router %s [%04x/%04x] at %s\n",
- pirq_router.name,
- pirq_router_dev->vendor,
- pirq_router_dev->device,
- pci_name(pirq_router_dev));
-
- /* The device remains referenced for the kernel lifetime */
-}
-
-static struct irq_info *pirq_get_info(struct pci_dev *dev)
-{
- struct irq_routing_table *rt = pirq_table;
- int entries = (rt->size - sizeof(struct irq_routing_table)) / sizeof(struct irq_info);
- struct irq_info *info;
-
- for (info = rt->slots; entries--; info++)
- if (info->bus == dev->bus->number && PCI_SLOT(info->devfn) == PCI_SLOT(dev->devfn))
- return info;
- return NULL;
-}
-
-static int pcibios_lookup_irq(struct pci_dev *dev, int assign)
-{
- u8 pin;
- struct irq_info *info;
- int i, pirq, newirq;
- int irq = 0;
- u32 mask;
- struct irq_router *r = &pirq_router;
- struct pci_dev *dev2 = NULL;
- char *msg = NULL;
-
- /* Find IRQ pin */
- pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
- if (!pin) {
- DBG(KERN_DEBUG " -> no interrupt pin\n");
- return 0;
- }
- pin = pin - 1;
-
- /* Find IRQ routing entry */
-
- if (!pirq_table)
- return 0;
-
- DBG(KERN_DEBUG "IRQ for %s[%c]", pci_name(dev), 'A' + pin);
- info = pirq_get_info(dev);
- if (!info) {
- DBG(" -> not found in routing table\n" KERN_DEBUG);
- return 0;
- }
- pirq = info->irq[pin].link;
- mask = info->irq[pin].bitmap;
- if (!pirq) {
- DBG(" -> not routed\n" KERN_DEBUG);
- return 0;
- }
- DBG(" -> PIRQ %02x, mask %04x, excl %04x", pirq, mask, pirq_table->exclusive_irqs);
- mask &= pcibios_irq_mask;
-
- /* Work around broken HP Pavilion Notebooks which assign USB to
- IRQ 9 even though it is actually wired to IRQ 11 */
-
- if (broken_hp_bios_irq9 && pirq == 0x59 && dev->irq == 9) {
- dev->irq = 11;
- pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 11);
- r->set(pirq_router_dev, dev, pirq, 11);
- }
-
- /* same for Acer Travelmate 360, but with CB and irq 11 -> 10 */
- if (acer_tm360_irqrouting && dev->irq == 11 && dev->vendor == PCI_VENDOR_ID_O2) {
- pirq = 0x68;
- mask = 0x400;
- dev->irq = r->get(pirq_router_dev, dev, pirq);
- pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
- }
-
- /*
- * Find the best IRQ to assign: use the one
- * reported by the device if possible.
- */
- newirq = dev->irq;
- if (newirq && !((1 << newirq) & mask)) {
- if ( pci_probe & PCI_USE_PIRQ_MASK) newirq = 0;
- else printk("\n" KERN_WARNING
- "PCI: IRQ %i for device %s doesn't match PIRQ mask "
- "- try pci=usepirqmask\n" KERN_DEBUG, newirq,
- pci_name(dev));
- }
- if (!newirq && assign) {
- for (i = 0; i < 16; i++) {
- if (!(mask & (1 << i)))
- continue;
- if (pirq_penalty[i] < pirq_penalty[newirq] && can_request_irq(i, IRQF_SHARED))
- newirq = i;
- }
- }
- DBG(" -> newirq=%d", newirq);
-
- /* Check if it is hardcoded */
- if ((pirq & 0xf0) == 0xf0) {
- irq = pirq & 0xf;
- DBG(" -> hardcoded IRQ %d\n", irq);
- msg = "Hardcoded";
- } else if ( r->get && (irq = r->get(pirq_router_dev, dev, pirq)) && \
- ((!(pci_probe & PCI_USE_PIRQ_MASK)) || ((1 << irq) & mask)) ) {
- DBG(" -> got IRQ %d\n", irq);
- msg = "Found";
- eisa_set_level_irq(irq);
- } else if (newirq && r->set && (dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) {
- DBG(" -> assigning IRQ %d", newirq);
- if (r->set(pirq_router_dev, dev, pirq, newirq)) {
- eisa_set_level_irq(newirq);
- DBG(" ... OK\n");
- msg = "Assigned";
- irq = newirq;
- }
- }
-
- if (!irq) {
- DBG(" ... failed\n");
- if (newirq && mask == (1 << newirq)) {
- msg = "Guessed";
- irq = newirq;
- } else
- return 0;
- }
- printk(KERN_INFO "PCI: %s IRQ %d for device %s\n", msg, irq, pci_name(dev));
-
- /* Update IRQ for all devices with the same pirq value */
- while ((dev2 = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev2)) != NULL) {
- pci_read_config_byte(dev2, PCI_INTERRUPT_PIN, &pin);
- if (!pin)
- continue;
- pin--;
- info = pirq_get_info(dev2);
- if (!info)
- continue;
- if (info->irq[pin].link == pirq) {
- /* We refuse to override the dev->irq information. Give a warning! */
- if ( dev2->irq && dev2->irq != irq && \
- (!(pci_probe & PCI_USE_PIRQ_MASK) || \
- ((1 << dev2->irq) & mask)) ) {
-#ifndef CONFIG_PCI_MSI
- printk(KERN_INFO "IRQ routing conflict for %s, have irq %d, want irq %d\n",
- pci_name(dev2), dev2->irq, irq);
-#endif
- continue;
- }
- dev2->irq = irq;
- pirq_penalty[irq]++;
- if (dev != dev2)
- printk(KERN_INFO "PCI: Sharing IRQ %d with %s\n", irq, pci_name(dev2));
- }
- }
- return 1;
-}
-
-static void __init pcibios_fixup_irqs(void)
-{
- struct pci_dev *dev = NULL;
- u8 pin;
-
- DBG(KERN_DEBUG "PCI: IRQ fixup\n");
- while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
- /*
- * If the BIOS has set an out of range IRQ number, just ignore it.
- * Also keep track of which IRQ's are already in use.
- */
- if (dev->irq >= 16) {
- DBG(KERN_DEBUG "%s: ignoring bogus IRQ %d\n", pci_name(dev), dev->irq);
- dev->irq = 0;
- }
- /* If the IRQ is already assigned to a PCI device, ignore its ISA use penalty */
- if (pirq_penalty[dev->irq] >= 100 && pirq_penalty[dev->irq] < 100000)
- pirq_penalty[dev->irq] = 0;
- pirq_penalty[dev->irq]++;
- }
-
- dev = NULL;
- while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
- pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
-#ifdef CONFIG_X86_IO_APIC
- /*
- * Recalculate IRQ numbers if we use the I/O APIC.
- */
- if (io_apic_assign_pci_irqs)
- {
- int irq;
-
- if (pin) {
- pin--; /* interrupt pins are numbered starting from 1 */
- irq = IO_APIC_get_PCI_irq_vector(dev->bus->number, PCI_SLOT(dev->devfn), pin);
- /*
- * Busses behind bridges are typically not listed in the MP-table.
- * In this case we have to look up the IRQ based on the parent bus,
- * parent slot, and pin number. The SMP code detects such bridged
- * busses itself so we should get into this branch reliably.
- */
- if (irq < 0 && dev->bus->parent) { /* go back to the bridge */
- struct pci_dev * bridge = dev->bus->self;
-
- pin = (pin + PCI_SLOT(dev->devfn)) % 4;
- irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number,
- PCI_SLOT(bridge->devfn), pin);
- if (irq >= 0)
- printk(KERN_WARNING "PCI: using PPB %s[%c] to get irq %d\n",
- pci_name(bridge), 'A' + pin, irq);
- }
- if (irq >= 0) {
- printk(KERN_INFO "PCI->APIC IRQ transform: %s[%c] -> IRQ %d\n",
- pci_name(dev), 'A' + pin, irq);
- dev->irq = irq;
- }
- }
- }
-#endif
- /*
- * Still no IRQ? Try to lookup one...
- */
- if (pin && !dev->irq)
- pcibios_lookup_irq(dev, 0);
- }
-}
-
-/*
- * Work around broken HP Pavilion Notebooks which assign USB to
- * IRQ 9 even though it is actually wired to IRQ 11
- */
-static int __init fix_broken_hp_bios_irq9(struct dmi_system_id *d)
-{
- if (!broken_hp_bios_irq9) {
- broken_hp_bios_irq9 = 1;
- printk(KERN_INFO "%s detected - fixing broken IRQ routing\n", d->ident);
- }
- return 0;
-}
-
-/*
- * Work around broken Acer TravelMate 360 Notebooks which assign
- * Cardbus to IRQ 11 even though it is actually wired to IRQ 10
- */
-static int __init fix_acer_tm360_irqrouting(struct dmi_system_id *d)
-{
- if (!acer_tm360_irqrouting) {
- acer_tm360_irqrouting = 1;
- printk(KERN_INFO "%s detected - fixing broken IRQ routing\n", d->ident);
- }
- return 0;
-}
-
-static struct dmi_system_id __initdata pciirq_dmi_table[] = {
- {
- .callback = fix_broken_hp_bios_irq9,
- .ident = "HP Pavilion N5400 Series Laptop",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
- DMI_MATCH(DMI_BIOS_VERSION, "GE.M1.03"),
- DMI_MATCH(DMI_PRODUCT_VERSION, "HP Pavilion Notebook Model GE"),
- DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"),
- },
- },
- {
- .callback = fix_acer_tm360_irqrouting,
- .ident = "Acer TravelMate 36x Laptop",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
- DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
- },
- },
- { }
-};
-
-static int __init pcibios_irq_init(void)
-{
- DBG(KERN_DEBUG "PCI: IRQ init\n");
-
- if (pcibios_enable_irq || raw_pci_ops == NULL)
- return 0;
-
- dmi_check_system(pciirq_dmi_table);
-
- pirq_table = pirq_find_routing_table();
-
-#ifdef CONFIG_PCI_BIOS
- if (!pirq_table && (pci_probe & PCI_BIOS_IRQ_SCAN))
- pirq_table = pcibios_get_irq_routing_table();
-#endif
- if (pirq_table) {
- pirq_peer_trick();
- pirq_find_router(&pirq_router);
- if (pirq_table->exclusive_irqs) {
- int i;
- for (i=0; i<16; i++)
- if (!(pirq_table->exclusive_irqs & (1 << i)))
- pirq_penalty[i] += 100;
- }
- /* If we're using the I/O APIC, avoid using the PCI IRQ routing table */
- if (io_apic_assign_pci_irqs)
- pirq_table = NULL;
- }
-
- pcibios_enable_irq = pirq_enable_irq;
-
- pcibios_fixup_irqs();
- return 0;
-}
-
-subsys_initcall(pcibios_irq_init);
-
-
-static void pirq_penalize_isa_irq(int irq, int active)
-{
- /*
- * If any ISAPnP device reports an IRQ in its list of possible
- * IRQ's, we try to avoid assigning it to PCI devices.
- */
- if (irq < 16) {
- if (active)
- pirq_penalty[irq] += 1000;
- else
- pirq_penalty[irq] += 100;
- }
-}
-
-void pcibios_penalize_isa_irq(int irq, int active)
-{
-#ifdef CONFIG_ACPI
- if (!acpi_noirq)
- acpi_penalize_isa_irq(irq, active);
- else
-#endif
- pirq_penalize_isa_irq(irq, active);
-}
-
-static int pirq_enable_irq(struct pci_dev *dev)
-{
- u8 pin;
- struct pci_dev *temp_dev;
-
- pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
- if (pin && !pcibios_lookup_irq(dev, 1) && !dev->irq) {
- char *msg = "";
-
- pin--; /* interrupt pins are numbered starting from 1 */
-
- if (io_apic_assign_pci_irqs) {
- int irq;
-
- irq = IO_APIC_get_PCI_irq_vector(dev->bus->number, PCI_SLOT(dev->devfn), pin);
- /*
- * Busses behind bridges are typically not listed in the MP-table.
- * In this case we have to look up the IRQ based on the parent bus,
- * parent slot, and pin number. The SMP code detects such bridged
- * busses itself so we should get into this branch reliably.
- */
- temp_dev = dev;
- while (irq < 0 && dev->bus->parent) { /* go back to the bridge */
- struct pci_dev * bridge = dev->bus->self;
-
- pin = (pin + PCI_SLOT(dev->devfn)) % 4;
- irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number,
- PCI_SLOT(bridge->devfn), pin);
- if (irq >= 0)
- printk(KERN_WARNING "PCI: using PPB %s[%c] to get irq %d\n",
- pci_name(bridge), 'A' + pin, irq);
- dev = bridge;
- }
- dev = temp_dev;
- if (irq >= 0) {
- printk(KERN_INFO "PCI->APIC IRQ transform: %s[%c] -> IRQ %d\n",
- pci_name(dev), 'A' + pin, irq);
- dev->irq = irq;
- return 0;
- } else
- msg = " Probably buggy MP table.";
- } else if (pci_probe & PCI_BIOS_IRQ_SCAN)
- msg = "";
- else
- msg = " Please try using pci=biosirq.";
-
- /* With IDE legacy devices the IRQ lookup failure is not a problem.. */
- if (dev->class >> 8 == PCI_CLASS_STORAGE_IDE && !(dev->class & 0x5))
- return 0;
-
- printk(KERN_WARNING "PCI: No IRQ known for interrupt pin %c of device %s.%s\n",
- 'A' + pin, pci_name(dev), msg);
- }
- return 0;
-}
+++ /dev/null
-/*
- * legacy.c - traditional, old school PCI bus probing
- */
-#include <linux/init.h>
-#include <linux/pci.h>
-#include "pci.h"
-
-/*
- * Discover remaining PCI buses in case there are peer host bridges.
- * We use the number of last PCI bus provided by the PCI BIOS.
- */
-static void __devinit pcibios_fixup_peer_bridges(void)
-{
- int n, devfn;
-
- if (pcibios_last_bus <= 0 || pcibios_last_bus >= 0xff)
- return;
- DBG("PCI: Peer bridge fixup\n");
-
- for (n=0; n <= pcibios_last_bus; n++) {
- u32 l;
- if (pci_find_bus(0, n))
- continue;
- for (devfn = 0; devfn < 256; devfn += 8) {
- if (!raw_pci_ops->read(0, n, devfn, PCI_VENDOR_ID, 2, &l) &&
- l != 0x0000 && l != 0xffff) {
- DBG("Found device at %02x:%02x [%04x]\n", n, devfn, l);
- printk(KERN_INFO "PCI: Discovered peer bus %02x\n", n);
- pci_scan_bus_with_sysdata(n);
- break;
- }
- }
- }
-}
-
-static int __init pci_legacy_init(void)
-{
- if (!raw_pci_ops) {
- printk("PCI: System does not support PCI\n");
- return 0;
- }
-
- if (pcibios_scanned++)
- return 0;
-
- printk("PCI: Probing PCI hardware\n");
- pci_root_bus = pcibios_scan_root(0);
- if (pci_root_bus)
- pci_bus_add_devices(pci_root_bus);
-
- pcibios_fixup_peer_bridges();
-
- return 0;
-}
-
-subsys_initcall(pci_legacy_init);
+++ /dev/null
-/*
- * mmconfig-shared.c - Low-level direct PCI config space access via
- * MMCONFIG - common code between i386 and x86-64.
- *
- * This code does:
- * - known chipset handling
- * - ACPI decoding and validation
- *
- * Per-architecture code takes care of the mappings and accesses
- * themselves.
- */
-
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <linux/bitmap.h>
-#include <asm/e820.h>
-
-#include "pci.h"
-
-/* aperture is up to 256MB but BIOS may reserve less */
-#define MMCONFIG_APER_MIN (2 * 1024*1024)
-#define MMCONFIG_APER_MAX (256 * 1024*1024)
-
-DECLARE_BITMAP(pci_mmcfg_fallback_slots, 32*PCI_MMCFG_MAX_CHECK_BUS);
-
-/* Indicate if the mmcfg resources have been placed into the resource table. */
-static int __initdata pci_mmcfg_resources_inserted;
-
-/* K8 systems have some devices (typically in the builtin northbridge)
- that are only accessible using type1
- Normally this can be expressed in the MCFG by not listing them
- and assigning suitable _SEGs, but this isn't implemented in some BIOS.
- Instead try to discover all devices on bus 0 that are unreachable using MM
- and fallback for them. */
-static void __init unreachable_devices(void)
-{
- int i, bus;
- /* Use the max bus number from ACPI here? */
- for (bus = 0; bus < PCI_MMCFG_MAX_CHECK_BUS; bus++) {
- for (i = 0; i < 32; i++) {
- unsigned int devfn = PCI_DEVFN(i, 0);
- u32 val1, val2;
-
- pci_conf1_read(0, bus, devfn, 0, 4, &val1);
- if (val1 == 0xffffffff)
- continue;
-
- if (pci_mmcfg_arch_reachable(0, bus, devfn)) {
- raw_pci_ops->read(0, bus, devfn, 0, 4, &val2);
- if (val1 == val2)
- continue;
- }
- set_bit(i + 32 * bus, pci_mmcfg_fallback_slots);
- printk(KERN_NOTICE "PCI: No mmconfig possible on device"
- " %02x:%02x\n", bus, i);
- }
- }
-}
-
-static const char __init *pci_mmcfg_e7520(void)
-{
- u32 win;
- pci_conf1_read(0, 0, PCI_DEVFN(0,0), 0xce, 2, &win);
-
- win = win & 0xf000;
- if(win == 0x0000 || win == 0xf000)
- pci_mmcfg_config_num = 0;
- else {
- pci_mmcfg_config_num = 1;
- pci_mmcfg_config = kzalloc(sizeof(pci_mmcfg_config[0]), GFP_KERNEL);
- if (!pci_mmcfg_config)
- return NULL;
- pci_mmcfg_config[0].address = win << 16;
- pci_mmcfg_config[0].pci_segment = 0;
- pci_mmcfg_config[0].start_bus_number = 0;
- pci_mmcfg_config[0].end_bus_number = 255;
- }
-
- return "Intel Corporation E7520 Memory Controller Hub";
-}
-
-static const char __init *pci_mmcfg_intel_945(void)
-{
- u32 pciexbar, mask = 0, len = 0;
-
- pci_mmcfg_config_num = 1;
-
- pci_conf1_read(0, 0, PCI_DEVFN(0,0), 0x48, 4, &pciexbar);
-
- /* Enable bit */
- if (!(pciexbar & 1))
- pci_mmcfg_config_num = 0;
-
- /* Size bits */
- switch ((pciexbar >> 1) & 3) {
- case 0:
- mask = 0xf0000000U;
- len = 0x10000000U;
- break;
- case 1:
- mask = 0xf8000000U;
- len = 0x08000000U;
- break;
- case 2:
- mask = 0xfc000000U;
- len = 0x04000000U;
- break;
- default:
- pci_mmcfg_config_num = 0;
- }
-
- /* Errata #2, things break when not aligned on a 256Mb boundary */
- /* Can only happen in 64M/128M mode */
-
- if ((pciexbar & mask) & 0x0fffffffU)
- pci_mmcfg_config_num = 0;
-
- /* Don't hit the APIC registers and their friends */
- if ((pciexbar & mask) >= 0xf0000000U)
- pci_mmcfg_config_num = 0;
-
- if (pci_mmcfg_config_num) {
- pci_mmcfg_config = kzalloc(sizeof(pci_mmcfg_config[0]), GFP_KERNEL);
- if (!pci_mmcfg_config)
- return NULL;
- pci_mmcfg_config[0].address = pciexbar & mask;
- pci_mmcfg_config[0].pci_segment = 0;
- pci_mmcfg_config[0].start_bus_number = 0;
- pci_mmcfg_config[0].end_bus_number = (len >> 20) - 1;
- }
-
- return "Intel Corporation 945G/GZ/P/PL Express Memory Controller Hub";
-}
-
-struct pci_mmcfg_hostbridge_probe {
- u32 vendor;
- u32 device;
- const char *(*probe)(void);
-};
-
-static struct pci_mmcfg_hostbridge_probe pci_mmcfg_probes[] __initdata = {
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, pci_mmcfg_e7520 },
- { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82945G_HB, pci_mmcfg_intel_945 },
-};
-
-static int __init pci_mmcfg_check_hostbridge(void)
-{
- u32 l;
- u16 vendor, device;
- int i;
- const char *name;
-
- pci_conf1_read(0, 0, PCI_DEVFN(0,0), 0, 4, &l);
- vendor = l & 0xffff;
- device = (l >> 16) & 0xffff;
-
- pci_mmcfg_config_num = 0;
- pci_mmcfg_config = NULL;
- name = NULL;
-
- for (i = 0; !name && i < ARRAY_SIZE(pci_mmcfg_probes); i++) {
- if (pci_mmcfg_probes[i].vendor == vendor &&
- pci_mmcfg_probes[i].device == device)
- name = pci_mmcfg_probes[i].probe();
- }
-
- if (name) {
- printk(KERN_INFO "PCI: Found %s %s MMCONFIG support.\n",
- name, pci_mmcfg_config_num ? "with" : "without");
- }
-
- return name != NULL;
-}
-
-static void __init pci_mmcfg_insert_resources(unsigned long resource_flags)
-{
-#define PCI_MMCFG_RESOURCE_NAME_LEN 19
- int i;
- struct resource *res;
- char *names;
- unsigned num_buses;
-
- res = kcalloc(PCI_MMCFG_RESOURCE_NAME_LEN + sizeof(*res),
- pci_mmcfg_config_num, GFP_KERNEL);
- if (!res) {
- printk(KERN_ERR "PCI: Unable to allocate MMCONFIG resources\n");
- return;
- }
-
- names = (void *)&res[pci_mmcfg_config_num];
- for (i = 0; i < pci_mmcfg_config_num; i++, res++) {
- struct acpi_mcfg_allocation *cfg = &pci_mmcfg_config[i];
- num_buses = cfg->end_bus_number - cfg->start_bus_number + 1;
- res->name = names;
- snprintf(names, PCI_MMCFG_RESOURCE_NAME_LEN, "PCI MMCONFIG %u",
- cfg->pci_segment);
- res->start = cfg->address;
- res->end = res->start + (num_buses << 20) - 1;
- res->flags = IORESOURCE_MEM | resource_flags;
- insert_resource(&iomem_resource, res);
- names += PCI_MMCFG_RESOURCE_NAME_LEN;
- }
-
- /* Mark that the resources have been inserted. */
- pci_mmcfg_resources_inserted = 1;
-}
-
-static void __init pci_mmcfg_reject_broken(int type)
-{
- typeof(pci_mmcfg_config[0]) *cfg;
-
- if ((pci_mmcfg_config_num == 0) ||
- (pci_mmcfg_config == NULL) ||
- (pci_mmcfg_config[0].address == 0))
- return;
-
- cfg = &pci_mmcfg_config[0];
-
- /*
- * Handle more broken MCFG tables on Asus etc.
- * They only contain a single entry for bus 0-0.
- */
- if (pci_mmcfg_config_num == 1 &&
- cfg->pci_segment == 0 &&
- (cfg->start_bus_number | cfg->end_bus_number) == 0) {
- printk(KERN_ERR "PCI: start and end of bus number is 0. "
- "Rejected as broken MCFG.\n");
- goto reject;
- }
-
- /*
- * Only do this check when type 1 works. If it doesn't work
- * assume we run on a Mac and always use MCFG
- */
- if (type == 1 && !e820_all_mapped(cfg->address,
- cfg->address + MMCONFIG_APER_MIN,
- E820_RESERVED)) {
- printk(KERN_ERR "PCI: BIOS Bug: MCFG area at %Lx is not"
- " E820-reserved\n", cfg->address);
- goto reject;
- }
- return;
-
-reject:
- printk(KERN_ERR "PCI: Not using MMCONFIG.\n");
- kfree(pci_mmcfg_config);
- pci_mmcfg_config = NULL;
- pci_mmcfg_config_num = 0;
-}
-
-void __init pci_mmcfg_init(int type)
-{
- int known_bridge = 0;
-
- if ((pci_probe & PCI_PROBE_MMCONF) == 0)
- return;
-
- if (type == 1 && pci_mmcfg_check_hostbridge())
- known_bridge = 1;
-
- if (!known_bridge) {
- acpi_table_parse(ACPI_SIG_MCFG, acpi_parse_mcfg);
- pci_mmcfg_reject_broken(type);
- }
-
- if ((pci_mmcfg_config_num == 0) ||
- (pci_mmcfg_config == NULL) ||
- (pci_mmcfg_config[0].address == 0))
- return;
-
- if (pci_mmcfg_arch_init()) {
- if (type == 1)
- unreachable_devices();
- if (known_bridge)
- pci_mmcfg_insert_resources(IORESOURCE_BUSY);
- pci_probe = (pci_probe & ~PCI_PROBE_MASK) | PCI_PROBE_MMCONF;
- } else {
- /*
- * Signal not to attempt to insert mmcfg resources because
- * the architecture mmcfg setup could not initialize.
- */
- pci_mmcfg_resources_inserted = 1;
- }
-}
-
-static int __init pci_mmcfg_late_insert_resources(void)
-{
- /*
- * If resources are already inserted or we are not using MMCONFIG,
- * don't insert the resources.
- */
- if ((pci_mmcfg_resources_inserted == 1) ||
- (pci_probe & PCI_PROBE_MMCONF) == 0 ||
- (pci_mmcfg_config_num == 0) ||
- (pci_mmcfg_config == NULL) ||
- (pci_mmcfg_config[0].address == 0))
- return 1;
-
- /*
- * Attempt to insert the mmcfg resources but not with the busy flag
- * marked so it won't cause request errors when __request_region is
- * called.
- */
- pci_mmcfg_insert_resources(0);
-
- return 0;
-}
-
-/*
- * Perform MMCONFIG resource insertion after PCI initialization to allow for
- * misprogrammed MCFG tables that state larger sizes but actually conflict
- * with other system resources.
- */
-late_initcall(pci_mmcfg_late_insert_resources);
+++ /dev/null
-/*
- * Copyright (C) 2004 Matthew Wilcox <matthew@wil.cx>
- * Copyright (C) 2004 Intel Corp.
- *
- * This code is released under the GNU General Public License version 2.
- */
-
-/*
- * mmconfig.c - Low-level direct PCI config space access via MMCONFIG
- */
-
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <asm/e820.h>
-#include "pci.h"
-
-/* Assume systems with more busses have correct MCFG */
-#define mmcfg_virt_addr ((void __iomem *) fix_to_virt(FIX_PCIE_MCFG))
-
-/* The base address of the last MMCONFIG device accessed */
-static u32 mmcfg_last_accessed_device;
-static int mmcfg_last_accessed_cpu;
-
-/*
- * Functions for accessing PCI configuration space with MMCONFIG accesses
- */
-static u32 get_base_addr(unsigned int seg, int bus, unsigned devfn)
-{
- struct acpi_mcfg_allocation *cfg;
- int cfg_num;
-
- if (seg == 0 && bus < PCI_MMCFG_MAX_CHECK_BUS &&
- test_bit(PCI_SLOT(devfn) + 32*bus, pci_mmcfg_fallback_slots))
- return 0;
-
- for (cfg_num = 0; cfg_num < pci_mmcfg_config_num; cfg_num++) {
- cfg = &pci_mmcfg_config[cfg_num];
- if (cfg->pci_segment == seg &&
- (cfg->start_bus_number <= bus) &&
- (cfg->end_bus_number >= bus))
- return cfg->address;
- }
-
- /* Fall back to type 0 */
- return 0;
-}
-
-/*
- * This is always called under pci_config_lock
- */
-static void pci_exp_set_dev_base(unsigned int base, int bus, int devfn)
-{
- u32 dev_base = base | (bus << 20) | (devfn << 12);
- int cpu = smp_processor_id();
- if (dev_base != mmcfg_last_accessed_device ||
- cpu != mmcfg_last_accessed_cpu) {
- mmcfg_last_accessed_device = dev_base;
- mmcfg_last_accessed_cpu = cpu;
- set_fixmap_nocache(FIX_PCIE_MCFG, dev_base);
- }
-}
-
-static int pci_mmcfg_read(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 *value)
-{
- unsigned long flags;
- u32 base;
-
- if ((bus > 255) || (devfn > 255) || (reg > 4095)) {
- *value = -1;
- return -EINVAL;
- }
-
- base = get_base_addr(seg, bus, devfn);
- if (!base)
- return pci_conf1_read(seg,bus,devfn,reg,len,value);
-
- spin_lock_irqsave(&pci_config_lock, flags);
-
- pci_exp_set_dev_base(base, bus, devfn);
-
- switch (len) {
- case 1:
- *value = mmio_config_readb(mmcfg_virt_addr + reg);
- break;
- case 2:
- *value = mmio_config_readw(mmcfg_virt_addr + reg);
- break;
- case 4:
- *value = mmio_config_readl(mmcfg_virt_addr + reg);
- break;
- }
- spin_unlock_irqrestore(&pci_config_lock, flags);
-
- return 0;
-}
-
-static int pci_mmcfg_write(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 value)
-{
- unsigned long flags;
- u32 base;
-
- if ((bus > 255) || (devfn > 255) || (reg > 4095))
- return -EINVAL;
-
- base = get_base_addr(seg, bus, devfn);
- if (!base)
- return pci_conf1_write(seg,bus,devfn,reg,len,value);
-
- spin_lock_irqsave(&pci_config_lock, flags);
-
- pci_exp_set_dev_base(base, bus, devfn);
-
- switch (len) {
- case 1:
- mmio_config_writeb(mmcfg_virt_addr + reg, value);
- break;
- case 2:
- mmio_config_writew(mmcfg_virt_addr + reg, value);
- break;
- case 4:
- mmio_config_writel(mmcfg_virt_addr + reg, value);
- break;
- }
- spin_unlock_irqrestore(&pci_config_lock, flags);
-
- return 0;
-}
-
-static struct pci_raw_ops pci_mmcfg = {
- .read = pci_mmcfg_read,
- .write = pci_mmcfg_write,
-};
-
-int __init pci_mmcfg_arch_reachable(unsigned int seg, unsigned int bus,
- unsigned int devfn)
-{
- return get_base_addr(seg, bus, devfn) != 0;
-}
-
-int __init pci_mmcfg_arch_init(void)
-{
- printk(KERN_INFO "PCI: Using MMCONFIG\n");
- raw_pci_ops = &pci_mmcfg;
- return 1;
-}
+++ /dev/null
-/*
- * numa.c - Low-level PCI access for NUMA-Q machines
- */
-
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/nodemask.h>
-#include "pci.h"
-
-#define BUS2QUAD(global) (mp_bus_id_to_node[global])
-#define BUS2LOCAL(global) (mp_bus_id_to_local[global])
-#define QUADLOCAL2BUS(quad,local) (quad_local_to_mp_bus_id[quad][local])
-
-#define PCI_CONF1_MQ_ADDRESS(bus, devfn, reg) \
- (0x80000000 | (BUS2LOCAL(bus) << 16) | (devfn << 8) | (reg & ~3))
-
-static int pci_conf1_mq_read(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 *value)
-{
- unsigned long flags;
-
- if (!value || (bus >= MAX_MP_BUSSES) || (devfn > 255) || (reg > 255))
- return -EINVAL;
-
- spin_lock_irqsave(&pci_config_lock, flags);
-
- outl_quad(PCI_CONF1_MQ_ADDRESS(bus, devfn, reg), 0xCF8, BUS2QUAD(bus));
-
- switch (len) {
- case 1:
- *value = inb_quad(0xCFC + (reg & 3), BUS2QUAD(bus));
- break;
- case 2:
- *value = inw_quad(0xCFC + (reg & 2), BUS2QUAD(bus));
- break;
- case 4:
- *value = inl_quad(0xCFC, BUS2QUAD(bus));
- break;
- }
-
- spin_unlock_irqrestore(&pci_config_lock, flags);
-
- return 0;
-}
-
-static int pci_conf1_mq_write(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 value)
-{
- unsigned long flags;
-
- if ((bus >= MAX_MP_BUSSES) || (devfn > 255) || (reg > 255))
- return -EINVAL;
-
- spin_lock_irqsave(&pci_config_lock, flags);
-
- outl_quad(PCI_CONF1_MQ_ADDRESS(bus, devfn, reg), 0xCF8, BUS2QUAD(bus));
-
- switch (len) {
- case 1:
- outb_quad((u8)value, 0xCFC + (reg & 3), BUS2QUAD(bus));
- break;
- case 2:
- outw_quad((u16)value, 0xCFC + (reg & 2), BUS2QUAD(bus));
- break;
- case 4:
- outl_quad((u32)value, 0xCFC, BUS2QUAD(bus));
- break;
- }
-
- spin_unlock_irqrestore(&pci_config_lock, flags);
-
- return 0;
-}
-
-#undef PCI_CONF1_MQ_ADDRESS
-
-static struct pci_raw_ops pci_direct_conf1_mq = {
- .read = pci_conf1_mq_read,
- .write = pci_conf1_mq_write
-};
-
-
-static void __devinit pci_fixup_i450nx(struct pci_dev *d)
-{
- /*
- * i450NX -- Find and scan all secondary buses on all PXB's.
- */
- int pxb, reg;
- u8 busno, suba, subb;
- int quad = BUS2QUAD(d->bus->number);
-
- printk("PCI: Searching for i450NX host bridges on %s\n", pci_name(d));
- reg = 0xd0;
- for(pxb=0; pxb<2; pxb++) {
- pci_read_config_byte(d, reg++, &busno);
- pci_read_config_byte(d, reg++, &suba);
- pci_read_config_byte(d, reg++, &subb);
- DBG("i450NX PXB %d: %02x/%02x/%02x\n", pxb, busno, suba, subb);
- if (busno) {
- /* Bus A */
- pci_scan_bus_with_sysdata(QUADLOCAL2BUS(quad, busno));
- }
- if (suba < subb) {
- /* Bus B */
- pci_scan_bus_with_sysdata(QUADLOCAL2BUS(quad, suba+1));
- }
- }
- pcibios_last_bus = -1;
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82451NX, pci_fixup_i450nx);
-
-static int __init pci_numa_init(void)
-{
- int quad;
-
- raw_pci_ops = &pci_direct_conf1_mq;
-
- if (pcibios_scanned++)
- return 0;
-
- pci_root_bus = pcibios_scan_root(0);
- if (pci_root_bus)
- pci_bus_add_devices(pci_root_bus);
- if (num_online_nodes() > 1)
- for_each_online_node(quad) {
- if (quad == 0)
- continue;
- printk("Scanning PCI bus %d for quad %d\n",
- QUADLOCAL2BUS(quad,0), quad);
- pci_scan_bus_with_sysdata(QUADLOCAL2BUS(quad, 0));
- }
- return 0;
-}
-
-subsys_initcall(pci_numa_init);
+++ /dev/null
-/*
- * BIOS32 and PCI BIOS handling.
- */
-
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/uaccess.h>
-#include "pci.h"
-#include "pci-functions.h"
-
-
-/* BIOS32 signature: "_32_" */
-#define BIOS32_SIGNATURE (('_' << 0) + ('3' << 8) + ('2' << 16) + ('_' << 24))
-
-/* PCI signature: "PCI " */
-#define PCI_SIGNATURE (('P' << 0) + ('C' << 8) + ('I' << 16) + (' ' << 24))
-
-/* PCI service signature: "$PCI" */
-#define PCI_SERVICE (('$' << 0) + ('P' << 8) + ('C' << 16) + ('I' << 24))
-
-/* PCI BIOS hardware mechanism flags */
-#define PCIBIOS_HW_TYPE1 0x01
-#define PCIBIOS_HW_TYPE2 0x02
-#define PCIBIOS_HW_TYPE1_SPEC 0x10
-#define PCIBIOS_HW_TYPE2_SPEC 0x20
-
-/*
- * This is the standard structure used to identify the entry point
- * to the BIOS32 Service Directory, as documented in
- * Standard BIOS 32-bit Service Directory Proposal
- * Revision 0.4 May 24, 1993
- * Phoenix Technologies Ltd.
- * Norwood, MA
- * and the PCI BIOS specification.
- */
-
-union bios32 {
- struct {
- unsigned long signature; /* _32_ */
- unsigned long entry; /* 32 bit physical address */
- unsigned char revision; /* Revision level, 0 */
- unsigned char length; /* Length in paragraphs should be 01 */
- unsigned char checksum; /* All bytes must add up to zero */
- unsigned char reserved[5]; /* Must be zero */
- } fields;
- char chars[16];
-};
-
-/*
- * Physical address of the service directory. I don't know if we're
- * allowed to have more than one of these or not, so just in case
- * we'll make pcibios_present() take a memory start parameter and store
- * the array there.
- */
-
-static struct {
- unsigned long address;
- unsigned short segment;
-} bios32_indirect = { 0, __KERNEL_CS };
-
-/*
- * Returns the entry point for the given service, NULL on error
- */
-
-static unsigned long bios32_service(unsigned long service)
-{
- unsigned char return_code; /* %al */
- unsigned long address; /* %ebx */
- unsigned long length; /* %ecx */
- unsigned long entry; /* %edx */
- unsigned long flags;
-
- local_irq_save(flags);
- __asm__("lcall *(%%edi); cld"
- : "=a" (return_code),
- "=b" (address),
- "=c" (length),
- "=d" (entry)
- : "0" (service),
- "1" (0),
- "D" (&bios32_indirect));
- local_irq_restore(flags);
-
- switch (return_code) {
- case 0:
- return address + entry;
- case 0x80: /* Not present */
- printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service);
- return 0;
- default: /* Shouldn't happen */
- printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n",
- service, return_code);
- return 0;
- }
-}
-
-static struct {
- unsigned long address;
- unsigned short segment;
-} pci_indirect = { 0, __KERNEL_CS };
-
-static int pci_bios_present;
-
-static int __devinit check_pcibios(void)
-{
- u32 signature, eax, ebx, ecx;
- u8 status, major_ver, minor_ver, hw_mech;
- unsigned long flags, pcibios_entry;
-
- if ((pcibios_entry = bios32_service(PCI_SERVICE))) {
- pci_indirect.address = pcibios_entry + PAGE_OFFSET;
-
- local_irq_save(flags);
- __asm__(
- "lcall *(%%edi); cld\n\t"
- "jc 1f\n\t"
- "xor %%ah, %%ah\n"
- "1:"
- : "=d" (signature),
- "=a" (eax),
- "=b" (ebx),
- "=c" (ecx)
- : "1" (PCIBIOS_PCI_BIOS_PRESENT),
- "D" (&pci_indirect)
- : "memory");
- local_irq_restore(flags);
-
- status = (eax >> 8) & 0xff;
- hw_mech = eax & 0xff;
- major_ver = (ebx >> 8) & 0xff;
- minor_ver = ebx & 0xff;
- if (pcibios_last_bus < 0)
- pcibios_last_bus = ecx & 0xff;
- DBG("PCI: BIOS probe returned s=%02x hw=%02x ver=%02x.%02x l=%02x\n",
- status, hw_mech, major_ver, minor_ver, pcibios_last_bus);
- if (status || signature != PCI_SIGNATURE) {
- printk (KERN_ERR "PCI: BIOS BUG #%x[%08x] found\n",
- status, signature);
- return 0;
- }
- printk(KERN_INFO "PCI: PCI BIOS revision %x.%02x entry at 0x%lx, last bus=%d\n",
- major_ver, minor_ver, pcibios_entry, pcibios_last_bus);
-#ifdef CONFIG_PCI_DIRECT
- if (!(hw_mech & PCIBIOS_HW_TYPE1))
- pci_probe &= ~PCI_PROBE_CONF1;
- if (!(hw_mech & PCIBIOS_HW_TYPE2))
- pci_probe &= ~PCI_PROBE_CONF2;
-#endif
- return 1;
- }
- return 0;
-}
-
-static int __devinit pci_bios_find_device (unsigned short vendor, unsigned short device_id,
- unsigned short index, unsigned char *bus, unsigned char *device_fn)
-{
- unsigned short bx;
- unsigned short ret;
-
- __asm__("lcall *(%%edi); cld\n\t"
- "jc 1f\n\t"
- "xor %%ah, %%ah\n"
- "1:"
- : "=b" (bx),
- "=a" (ret)
- : "1" (PCIBIOS_FIND_PCI_DEVICE),
- "c" (device_id),
- "d" (vendor),
- "S" ((int) index),
- "D" (&pci_indirect));
- *bus = (bx >> 8) & 0xff;
- *device_fn = bx & 0xff;
- return (int) (ret & 0xff00) >> 8;
-}
-
-static int pci_bios_read(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 *value)
-{
- unsigned long result = 0;
- unsigned long flags;
- unsigned long bx = (bus << 8) | devfn;
-
- if (!value || (bus > 255) || (devfn > 255) || (reg > 255))
- return -EINVAL;
-
- spin_lock_irqsave(&pci_config_lock, flags);
-
- switch (len) {
- case 1:
- __asm__("lcall *(%%esi); cld\n\t"
- "jc 1f\n\t"
- "xor %%ah, %%ah\n"
- "1:"
- : "=c" (*value),
- "=a" (result)
- : "1" (PCIBIOS_READ_CONFIG_BYTE),
- "b" (bx),
- "D" ((long)reg),
- "S" (&pci_indirect));
- break;
- case 2:
- __asm__("lcall *(%%esi); cld\n\t"
- "jc 1f\n\t"
- "xor %%ah, %%ah\n"
- "1:"
- : "=c" (*value),
- "=a" (result)
- : "1" (PCIBIOS_READ_CONFIG_WORD),
- "b" (bx),
- "D" ((long)reg),
- "S" (&pci_indirect));
- break;
- case 4:
- __asm__("lcall *(%%esi); cld\n\t"
- "jc 1f\n\t"
- "xor %%ah, %%ah\n"
- "1:"
- : "=c" (*value),
- "=a" (result)
- : "1" (PCIBIOS_READ_CONFIG_DWORD),
- "b" (bx),
- "D" ((long)reg),
- "S" (&pci_indirect));
- break;
- }
-
- spin_unlock_irqrestore(&pci_config_lock, flags);
-
- return (int)((result & 0xff00) >> 8);
-}
-
-static int pci_bios_write(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 value)
-{
- unsigned long result = 0;
- unsigned long flags;
- unsigned long bx = (bus << 8) | devfn;
-
- if ((bus > 255) || (devfn > 255) || (reg > 255))
- return -EINVAL;
-
- spin_lock_irqsave(&pci_config_lock, flags);
-
- switch (len) {
- case 1:
- __asm__("lcall *(%%esi); cld\n\t"
- "jc 1f\n\t"
- "xor %%ah, %%ah\n"
- "1:"
- : "=a" (result)
- : "0" (PCIBIOS_WRITE_CONFIG_BYTE),
- "c" (value),
- "b" (bx),
- "D" ((long)reg),
- "S" (&pci_indirect));
- break;
- case 2:
- __asm__("lcall *(%%esi); cld\n\t"
- "jc 1f\n\t"
- "xor %%ah, %%ah\n"
- "1:"
- : "=a" (result)
- : "0" (PCIBIOS_WRITE_CONFIG_WORD),
- "c" (value),
- "b" (bx),
- "D" ((long)reg),
- "S" (&pci_indirect));
- break;
- case 4:
- __asm__("lcall *(%%esi); cld\n\t"
- "jc 1f\n\t"
- "xor %%ah, %%ah\n"
- "1:"
- : "=a" (result)
- : "0" (PCIBIOS_WRITE_CONFIG_DWORD),
- "c" (value),
- "b" (bx),
- "D" ((long)reg),
- "S" (&pci_indirect));
- break;
- }
-
- spin_unlock_irqrestore(&pci_config_lock, flags);
-
- return (int)((result & 0xff00) >> 8);
-}
-
-
-/*
- * Function table for BIOS32 access
- */
-
-static struct pci_raw_ops pci_bios_access = {
- .read = pci_bios_read,
- .write = pci_bios_write
-};
-
-/*
- * Try to find PCI BIOS.
- */
-
-static struct pci_raw_ops * __devinit pci_find_bios(void)
-{
- union bios32 *check;
- unsigned char sum;
- int i, length;
-
- /*
- * Follow the standard procedure for locating the BIOS32 Service
- * directory by scanning the permissible address range from
- * 0xe0000 through 0xfffff for a valid BIOS32 structure.
- */
-
- for (check = (union bios32 *) __va(0xe0000);
- check <= (union bios32 *) __va(0xffff0);
- ++check) {
- long sig;
- if (probe_kernel_address(&check->fields.signature, sig))
- continue;
-
- if (check->fields.signature != BIOS32_SIGNATURE)
- continue;
- length = check->fields.length * 16;
- if (!length)
- continue;
- sum = 0;
- for (i = 0; i < length ; ++i)
- sum += check->chars[i];
- if (sum != 0)
- continue;
- if (check->fields.revision != 0) {
- printk("PCI: unsupported BIOS32 revision %d at 0x%p\n",
- check->fields.revision, check);
- continue;
- }
- DBG("PCI: BIOS32 Service Directory structure at 0x%p\n", check);
- if (check->fields.entry >= 0x100000) {
- printk("PCI: BIOS32 entry (0x%p) in high memory, "
- "cannot use.\n", check);
- return NULL;
- } else {
- unsigned long bios32_entry = check->fields.entry;
- DBG("PCI: BIOS32 Service Directory entry at 0x%lx\n",
- bios32_entry);
- bios32_indirect.address = bios32_entry + PAGE_OFFSET;
- if (check_pcibios())
- return &pci_bios_access;
- }
- break; /* Hopefully more than one BIOS32 cannot happen... */
- }
-
- return NULL;
-}
-
-/*
- * Sort the device list according to PCI BIOS. Nasty hack, but since some
- * fool forgot to define the `correct' device order in the PCI BIOS specs
- * and we want to be (possibly bug-to-bug ;-]) compatible with older kernels
- * which used BIOS ordering, we are bound to do this...
- */
-
-void __devinit pcibios_sort(void)
-{
- LIST_HEAD(sorted_devices);
- struct list_head *ln;
- struct pci_dev *dev, *d;
- int idx, found;
- unsigned char bus, devfn;
-
- DBG("PCI: Sorting device list...\n");
- while (!list_empty(&pci_devices)) {
- ln = pci_devices.next;
- dev = pci_dev_g(ln);
- idx = found = 0;
- while (pci_bios_find_device(dev->vendor, dev->device, idx, &bus, &devfn) == PCIBIOS_SUCCESSFUL) {
- idx++;
- list_for_each(ln, &pci_devices) {
- d = pci_dev_g(ln);
- if (d->bus->number == bus && d->devfn == devfn) {
- list_move_tail(&d->global_list, &sorted_devices);
- if (d == dev)
- found = 1;
- break;
- }
- }
- if (ln == &pci_devices) {
- printk(KERN_WARNING "PCI: BIOS reporting unknown device %02x:%02x\n", bus, devfn);
- /*
- * We must not continue scanning as several buggy BIOSes
- * return garbage after the last device. Grr.
- */
- break;
- }
- }
- if (!found) {
- printk(KERN_WARNING "PCI: Device %s not found by BIOS\n",
- pci_name(dev));
- list_move_tail(&dev->global_list, &sorted_devices);
- }
- }
- list_splice(&sorted_devices, &pci_devices);
-}
-
-/*
- * BIOS Functions for IRQ Routing
- */
-
-struct irq_routing_options {
- u16 size;
- struct irq_info *table;
- u16 segment;
-} __attribute__((packed));
-
-struct irq_routing_table * pcibios_get_irq_routing_table(void)
-{
- struct irq_routing_options opt;
- struct irq_routing_table *rt = NULL;
- int ret, map;
- unsigned long page;
-
- if (!pci_bios_present)
- return NULL;
- page = __get_free_page(GFP_KERNEL);
- if (!page)
- return NULL;
- opt.table = (struct irq_info *) page;
- opt.size = PAGE_SIZE;
- opt.segment = __KERNEL_DS;
-
- DBG("PCI: Fetching IRQ routing table... ");
- __asm__("push %%es\n\t"
- "push %%ds\n\t"
- "pop %%es\n\t"
- "lcall *(%%esi); cld\n\t"
- "pop %%es\n\t"
- "jc 1f\n\t"
- "xor %%ah, %%ah\n"
- "1:"
- : "=a" (ret),
- "=b" (map),
- "=m" (opt)
- : "0" (PCIBIOS_GET_ROUTING_OPTIONS),
- "1" (0),
- "D" ((long) &opt),
- "S" (&pci_indirect),
- "m" (opt)
- : "memory");
- DBG("OK ret=%d, size=%d, map=%x\n", ret, opt.size, map);
- if (ret & 0xff00)
- printk(KERN_ERR "PCI: Error %02x when fetching IRQ routing table.\n", (ret >> 8) & 0xff);
- else if (opt.size) {
- rt = kmalloc(sizeof(struct irq_routing_table) + opt.size, GFP_KERNEL);
- if (rt) {
- memset(rt, 0, sizeof(struct irq_routing_table));
- rt->size = opt.size + sizeof(struct irq_routing_table);
- rt->exclusive_irqs = map;
- memcpy(rt->slots, (void *) page, opt.size);
- printk(KERN_INFO "PCI: Using BIOS Interrupt Routing Table\n");
- }
- }
- free_page(page);
- return rt;
-}
-EXPORT_SYMBOL(pcibios_get_irq_routing_table);
-
-int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq)
-{
- int ret;
-
- __asm__("lcall *(%%esi); cld\n\t"
- "jc 1f\n\t"
- "xor %%ah, %%ah\n"
- "1:"
- : "=a" (ret)
- : "0" (PCIBIOS_SET_PCI_HW_INT),
- "b" ((dev->bus->number << 8) | dev->devfn),
- "c" ((irq << 8) | (pin + 10)),
- "S" (&pci_indirect));
- return !(ret & 0xff00);
-}
-EXPORT_SYMBOL(pcibios_set_irq_routing);
-
-void __init pci_pcbios_init(void)
-{
- if ((pci_probe & PCI_PROBE_BIOS)
- && ((raw_pci_ops = pci_find_bios()))) {
- pci_probe |= PCI_BIOS_SORT;
- pci_bios_present = 1;
- }
-}
-
+++ /dev/null
-/*
- * Low-Level PCI Access for i386 machines.
- *
- * (c) 1999 Martin Mares <mj@ucw.cz>
- */
-
-#undef DEBUG
-
-#ifdef DEBUG
-#define DBG(x...) printk(x)
-#else
-#define DBG(x...)
-#endif
-
-#define PCI_PROBE_BIOS 0x0001
-#define PCI_PROBE_CONF1 0x0002
-#define PCI_PROBE_CONF2 0x0004
-#define PCI_PROBE_MMCONF 0x0008
-#define PCI_PROBE_MASK 0x000f
-#define PCI_PROBE_NOEARLY 0x0010
-
-#define PCI_NO_SORT 0x0100
-#define PCI_BIOS_SORT 0x0200
-#define PCI_NO_CHECKS 0x0400
-#define PCI_USE_PIRQ_MASK 0x0800
-#define PCI_ASSIGN_ROMS 0x1000
-#define PCI_BIOS_IRQ_SCAN 0x2000
-#define PCI_ASSIGN_ALL_BUSSES 0x4000
-
-extern unsigned int pci_probe;
-extern unsigned long pirq_table_addr;
-
-enum pci_bf_sort_state {
- pci_bf_sort_default,
- pci_force_nobf,
- pci_force_bf,
- pci_dmi_bf,
-};
-
-/* pci-i386.c */
-
-extern unsigned int pcibios_max_latency;
-
-void pcibios_resource_survey(void);
-int pcibios_enable_resources(struct pci_dev *, int);
-
-/* pci-pc.c */
-
-extern int pcibios_last_bus;
-extern struct pci_bus *pci_root_bus;
-extern struct pci_ops pci_root_ops;
-
-/* pci-irq.c */
-
-struct irq_info {
- u8 bus, devfn; /* Bus, device and function */
- struct {
- u8 link; /* IRQ line ID, chipset dependent, 0=not routed */
- u16 bitmap; /* Available IRQs */
- } __attribute__((packed)) irq[4];
- u8 slot; /* Slot number, 0=onboard */
- u8 rfu;
-} __attribute__((packed));
-
-struct irq_routing_table {
- u32 signature; /* PIRQ_SIGNATURE should be here */
- u16 version; /* PIRQ_VERSION */
- u16 size; /* Table size in bytes */
- u8 rtr_bus, rtr_devfn; /* Where the interrupt router lies */
- u16 exclusive_irqs; /* IRQs devoted exclusively to PCI usage */
- u16 rtr_vendor, rtr_device; /* Vendor and device ID of interrupt router */
- u32 miniport_data; /* Crap */
- u8 rfu[11];
- u8 checksum; /* Modulo 256 checksum must give zero */
- struct irq_info slots[0];
-} __attribute__((packed));
-
-extern unsigned int pcibios_irq_mask;
-
-extern int pcibios_scanned;
-extern spinlock_t pci_config_lock;
-
-extern int (*pcibios_enable_irq)(struct pci_dev *dev);
-extern void (*pcibios_disable_irq)(struct pci_dev *dev);
-
-extern int pci_conf1_write(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 value);
-extern int pci_conf1_read(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 *value);
-
-extern int pci_direct_probe(void);
-extern void pci_direct_init(int type);
-extern void pci_pcbios_init(void);
-extern void pci_mmcfg_init(int type);
-extern void pcibios_sort(void);
-
-/* pci-mmconfig.c */
-
-/* Verify the first 16 busses. We assume that systems with more busses
- get MCFG right. */
-#define PCI_MMCFG_MAX_CHECK_BUS 16
-extern DECLARE_BITMAP(pci_mmcfg_fallback_slots, 32*PCI_MMCFG_MAX_CHECK_BUS);
-
-extern int __init pci_mmcfg_arch_reachable(unsigned int seg, unsigned int bus,
- unsigned int devfn);
-extern int __init pci_mmcfg_arch_init(void);
-
-/*
- * AMD Fam10h CPUs are buggy, and cannot access MMIO config space
- * on their northbrige except through the * %eax register. As such, you MUST
- * NOT use normal IOMEM accesses, you need to only use the magic mmio-config
- * accessor functions.
- * In fact just use pci_config_*, nothing else please.
- */
-static inline unsigned char mmio_config_readb(void __iomem *pos)
-{
- u8 val;
- asm volatile("movb (%1),%%al" : "=a" (val) : "r" (pos));
- return val;
-}
-
-static inline unsigned short mmio_config_readw(void __iomem *pos)
-{
- u16 val;
- asm volatile("movw (%1),%%ax" : "=a" (val) : "r" (pos));
- return val;
-}
-
-static inline unsigned int mmio_config_readl(void __iomem *pos)
-{
- u32 val;
- asm volatile("movl (%1),%%eax" : "=a" (val) : "r" (pos));
- return val;
-}
-
-static inline void mmio_config_writeb(void __iomem *pos, u8 val)
-{
- asm volatile("movb %%al,(%1)" :: "a" (val), "r" (pos) : "memory");
-}
-
-static inline void mmio_config_writew(void __iomem *pos, u16 val)
-{
- asm volatile("movw %%ax,(%1)" :: "a" (val), "r" (pos) : "memory");
-}
-
-static inline void mmio_config_writel(void __iomem *pos, u32 val)
-{
- asm volatile("movl %%eax,(%1)" :: "a" (val), "r" (pos) : "memory");
-}
+++ /dev/null
-/*
- * Low-Level PCI Support for SGI Visual Workstation
- *
- * (c) 1999--2000 Martin Mares <mj@ucw.cz>
- */
-
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-
-#include "cobalt.h"
-#include "lithium.h"
-
-#include "pci.h"
-
-
-extern struct pci_raw_ops pci_direct_conf1;
-
-static int pci_visws_enable_irq(struct pci_dev *dev) { return 0; }
-static void pci_visws_disable_irq(struct pci_dev *dev) { }
-
-int (*pcibios_enable_irq)(struct pci_dev *dev) = &pci_visws_enable_irq;
-void (*pcibios_disable_irq)(struct pci_dev *dev) = &pci_visws_disable_irq;
-
-void __init pcibios_penalize_isa_irq(int irq, int active) {}
-
-
-unsigned int pci_bus0, pci_bus1;
-
-static inline u8 bridge_swizzle(u8 pin, u8 slot)
-{
- return (((pin - 1) + slot) % 4) + 1;
-}
-
-static u8 __init visws_swizzle(struct pci_dev *dev, u8 *pinp)
-{
- u8 pin = *pinp;
-
- while (dev->bus->self) { /* Move up the chain of bridges. */
- pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn));
- dev = dev->bus->self;
- }
- *pinp = pin;
-
- return PCI_SLOT(dev->devfn);
-}
-
-static int __init visws_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
-{
- int irq, bus = dev->bus->number;
-
- pin--;
-
- /* Nothing useful at PIIX4 pin 1 */
- if (bus == pci_bus0 && slot == 4 && pin == 0)
- return -1;
-
- /* PIIX4 USB is on Bus 0, Slot 4, Line 3 */
- if (bus == pci_bus0 && slot == 4 && pin == 3) {
- irq = CO_IRQ(CO_APIC_PIIX4_USB);
- goto out;
- }
-
- /* First pin spread down 1 APIC entry per slot */
- if (pin == 0) {
- irq = CO_IRQ((bus == pci_bus0 ? CO_APIC_PCIB_BASE0 :
- CO_APIC_PCIA_BASE0) + slot);
- goto out;
- }
-
- /* lines 1,2,3 from any slot is shared in this twirly pattern */
- if (bus == pci_bus1) {
- /* lines 1-3 from devices 0 1 rotate over 2 apic entries */
- irq = CO_IRQ(CO_APIC_PCIA_BASE123 + ((slot + (pin - 1)) % 2));
- } else { /* bus == pci_bus0 */
- /* lines 1-3 from devices 0-3 rotate over 3 apic entries */
- if (slot == 0)
- slot = 3; /* same pattern */
- irq = CO_IRQ(CO_APIC_PCIA_BASE123 + ((3 - slot) + (pin - 1) % 3));
- }
-out:
- printk(KERN_DEBUG "PCI: Bus %d Slot %d Line %d -> IRQ %d\n", bus, slot, pin, irq);
- return irq;
-}
-
-void __init pcibios_update_irq(struct pci_dev *dev, int irq)
-{
- pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-}
-
-static int __init pcibios_init(void)
-{
- /* The VISWS supports configuration access type 1 only */
- pci_probe = (pci_probe | PCI_PROBE_CONF1) &
- ~(PCI_PROBE_BIOS | PCI_PROBE_CONF2);
-
- pci_bus0 = li_pcib_read16(LI_PCI_BUSNUM) & 0xff;
- pci_bus1 = li_pcia_read16(LI_PCI_BUSNUM) & 0xff;
-
- printk(KERN_INFO "PCI: Lithium bridge A bus: %u, "
- "bridge B (PIIX4) bus: %u\n", pci_bus1, pci_bus0);
-
- raw_pci_ops = &pci_direct_conf1;
- pci_scan_bus_with_sysdata(pci_bus0);
- pci_scan_bus_with_sysdata(pci_bus1);
- pci_fixup_irqs(visws_swizzle, visws_map_irq);
- pcibios_resource_survey();
- return 0;
-}
-
-subsys_initcall(pcibios_init);
--- /dev/null
+ifeq ($(CONFIG_X86_32),y)
+include ${srctree}/arch/x86/pci/Makefile_32
+else
+include ${srctree}/arch/x86_64/pci/Makefile_64
+endif
--- /dev/null
+obj-y := i386.o init.o
+
+obj-$(CONFIG_PCI_BIOS) += pcbios.o
+obj-$(CONFIG_PCI_MMCONFIG) += mmconfig_32.o direct.o mmconfig-shared.o
+obj-$(CONFIG_PCI_DIRECT) += direct.o
+
+pci-y := fixup.o
+pci-$(CONFIG_ACPI) += acpi.o
+pci-y += legacy.o irq.o
+
+pci-$(CONFIG_X86_VISWS) := visws.o fixup.o
+pci-$(CONFIG_X86_NUMAQ) := numa.o irq.o
+
+obj-y += $(pci-y) common.o early.o
--- /dev/null
+#include <linux/pci.h>
+#include <linux/acpi.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <asm/numa.h>
+#include "pci.h"
+
+struct pci_bus * __devinit pci_acpi_scan_root(struct acpi_device *device, int domain, int busnum)
+{
+ struct pci_bus *bus;
+ struct pci_sysdata *sd;
+ int pxm;
+
+ /* Allocate per-root-bus (not per bus) arch-specific data.
+ * TODO: leak; this memory is never freed.
+ * It's arguable whether it's worth the trouble to care.
+ */
+ sd = kzalloc(sizeof(*sd), GFP_KERNEL);
+ if (!sd) {
+ printk(KERN_ERR "PCI: OOM, not probing PCI bus %02x\n", busnum);
+ return NULL;
+ }
+
+ if (domain != 0) {
+ printk(KERN_WARNING "PCI: Multiple domains not supported\n");
+ kfree(sd);
+ return NULL;
+ }
+
+ sd->node = -1;
+
+ pxm = acpi_get_pxm(device->handle);
+#ifdef CONFIG_ACPI_NUMA
+ if (pxm >= 0)
+ sd->node = pxm_to_node(pxm);
+#endif
+
+ bus = pci_scan_bus_parented(NULL, busnum, &pci_root_ops, sd);
+ if (!bus)
+ kfree(sd);
+
+#ifdef CONFIG_ACPI_NUMA
+ if (bus != NULL) {
+ if (pxm >= 0) {
+ printk("bus %d -> pxm %d -> node %d\n",
+ busnum, pxm, sd->node);
+ }
+ }
+#endif
+
+ return bus;
+}
+
+extern int pci_routeirq;
+static int __init pci_acpi_init(void)
+{
+ struct pci_dev *dev = NULL;
+
+ if (pcibios_scanned)
+ return 0;
+
+ if (acpi_noirq)
+ return 0;
+
+ printk(KERN_INFO "PCI: Using ACPI for IRQ routing\n");
+ acpi_irq_penalty_init();
+ pcibios_scanned++;
+ pcibios_enable_irq = acpi_pci_irq_enable;
+ pcibios_disable_irq = acpi_pci_irq_disable;
+
+ if (pci_routeirq) {
+ /*
+ * PCI IRQ routing is set up by pci_enable_device(), but we
+ * also do it here in case there are still broken drivers that
+ * don't use pci_enable_device().
+ */
+ printk(KERN_INFO "PCI: Routing PCI interrupts for all devices because \"pci=routeirq\" specified\n");
+ for_each_pci_dev(dev)
+ acpi_pci_irq_enable(dev);
+ } else
+ printk(KERN_INFO "PCI: If a device doesn't work, try \"pci=routeirq\". If it helps, post a report\n");
+
+#ifdef CONFIG_X86_IO_APIC
+ if (acpi_ioapic)
+ print_IO_APIC();
+#endif
+
+ return 0;
+}
+subsys_initcall(pci_acpi_init);
--- /dev/null
+/*
+ * Low-Level PCI Support for PC
+ *
+ * (c) 1999--2000 Martin Mares <mj@ucw.cz>
+ */
+
+#include <linux/sched.h>
+#include <linux/pci.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/dmi.h>
+
+#include <asm/acpi.h>
+#include <asm/segment.h>
+#include <asm/io.h>
+#include <asm/smp.h>
+
+#include "pci.h"
+
+unsigned int pci_probe = PCI_PROBE_BIOS | PCI_PROBE_CONF1 | PCI_PROBE_CONF2 |
+ PCI_PROBE_MMCONF;
+
+static int pci_bf_sort;
+int pci_routeirq;
+int pcibios_last_bus = -1;
+unsigned long pirq_table_addr;
+struct pci_bus *pci_root_bus;
+struct pci_raw_ops *raw_pci_ops;
+
+static int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
+{
+ return raw_pci_ops->read(0, bus->number, devfn, where, size, value);
+}
+
+static int pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value)
+{
+ return raw_pci_ops->write(0, bus->number, devfn, where, size, value);
+}
+
+struct pci_ops pci_root_ops = {
+ .read = pci_read,
+ .write = pci_write,
+};
+
+/*
+ * legacy, numa, and acpi all want to call pcibios_scan_root
+ * from their initcalls. This flag prevents that.
+ */
+int pcibios_scanned;
+
+/*
+ * This interrupt-safe spinlock protects all accesses to PCI
+ * configuration space.
+ */
+DEFINE_SPINLOCK(pci_config_lock);
+
+/*
+ * Several buggy motherboards address only 16 devices and mirror
+ * them to next 16 IDs. We try to detect this `feature' on all
+ * primary buses (those containing host bridges as they are
+ * expected to be unique) and remove the ghost devices.
+ */
+
+static void __devinit pcibios_fixup_ghosts(struct pci_bus *b)
+{
+ struct list_head *ln, *mn;
+ struct pci_dev *d, *e;
+ int mirror = PCI_DEVFN(16,0);
+ int seen_host_bridge = 0;
+ int i;
+
+ DBG("PCI: Scanning for ghost devices on bus %d\n", b->number);
+ list_for_each(ln, &b->devices) {
+ d = pci_dev_b(ln);
+ if ((d->class >> 8) == PCI_CLASS_BRIDGE_HOST)
+ seen_host_bridge++;
+ for (mn=ln->next; mn != &b->devices; mn=mn->next) {
+ e = pci_dev_b(mn);
+ if (e->devfn != d->devfn + mirror ||
+ e->vendor != d->vendor ||
+ e->device != d->device ||
+ e->class != d->class)
+ continue;
+ for(i=0; i<PCI_NUM_RESOURCES; i++)
+ if (e->resource[i].start != d->resource[i].start ||
+ e->resource[i].end != d->resource[i].end ||
+ e->resource[i].flags != d->resource[i].flags)
+ continue;
+ break;
+ }
+ if (mn == &b->devices)
+ return;
+ }
+ if (!seen_host_bridge)
+ return;
+ printk(KERN_WARNING "PCI: Ignoring ghost devices on bus %02x\n", b->number);
+
+ ln = &b->devices;
+ while (ln->next != &b->devices) {
+ d = pci_dev_b(ln->next);
+ if (d->devfn >= mirror) {
+ list_del(&d->global_list);
+ list_del(&d->bus_list);
+ kfree(d);
+ } else
+ ln = ln->next;
+ }
+}
+
+/*
+ * Called after each bus is probed, but before its children
+ * are examined.
+ */
+
+void __devinit pcibios_fixup_bus(struct pci_bus *b)
+{
+ pcibios_fixup_ghosts(b);
+ pci_read_bridge_bases(b);
+}
+
+/*
+ * Only use DMI information to set this if nothing was passed
+ * on the kernel command line (which was parsed earlier).
+ */
+
+static int __devinit set_bf_sort(struct dmi_system_id *d)
+{
+ if (pci_bf_sort == pci_bf_sort_default) {
+ pci_bf_sort = pci_dmi_bf;
+ printk(KERN_INFO "PCI: %s detected, enabling pci=bfsort.\n", d->ident);
+ }
+ return 0;
+}
+
+/*
+ * Enable renumbering of PCI bus# ranges to reach all PCI busses (Cardbus)
+ */
+#ifdef __i386__
+static int __devinit assign_all_busses(struct dmi_system_id *d)
+{
+ pci_probe |= PCI_ASSIGN_ALL_BUSSES;
+ printk(KERN_INFO "%s detected: enabling PCI bus# renumbering"
+ " (pci=assign-busses)\n", d->ident);
+ return 0;
+}
+#endif
+
+static struct dmi_system_id __devinitdata pciprobe_dmi_table[] = {
+#ifdef __i386__
+/*
+ * Laptops which need pci=assign-busses to see Cardbus cards
+ */
+ {
+ .callback = assign_all_busses,
+ .ident = "Samsung X20 Laptop",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Samsung Electronics"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "SX20S"),
+ },
+ },
+#endif /* __i386__ */
+ {
+ .callback = set_bf_sort,
+ .ident = "Dell PowerEdge 1950",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1950"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "Dell PowerEdge 1955",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1955"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "Dell PowerEdge 2900",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2900"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "Dell PowerEdge 2950",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2950"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "Dell PowerEdge R900",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge R900"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "HP ProLiant BL20p G3",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL20p G3"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "HP ProLiant BL20p G4",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL20p G4"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "HP ProLiant BL30p G1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL30p G1"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "HP ProLiant BL25p G1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL25p G1"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "HP ProLiant BL35p G1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL35p G1"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "HP ProLiant BL45p G1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL45p G1"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "HP ProLiant BL45p G2",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL45p G2"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "HP ProLiant BL460c G1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL460c G1"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "HP ProLiant BL465c G1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL465c G1"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "HP ProLiant BL480c G1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL480c G1"),
+ },
+ },
+ {
+ .callback = set_bf_sort,
+ .ident = "HP ProLiant BL685c G1",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL685c G1"),
+ },
+ },
+ {}
+};
+
+struct pci_bus * __devinit pcibios_scan_root(int busnum)
+{
+ struct pci_bus *bus = NULL;
+ struct pci_sysdata *sd;
+
+ dmi_check_system(pciprobe_dmi_table);
+
+ while ((bus = pci_find_next_bus(bus)) != NULL) {
+ if (bus->number == busnum) {
+ /* Already scanned */
+ return bus;
+ }
+ }
+
+ /* Allocate per-root-bus (not per bus) arch-specific data.
+ * TODO: leak; this memory is never freed.
+ * It's arguable whether it's worth the trouble to care.
+ */
+ sd = kzalloc(sizeof(*sd), GFP_KERNEL);
+ if (!sd) {
+ printk(KERN_ERR "PCI: OOM, not probing PCI bus %02x\n", busnum);
+ return NULL;
+ }
+
+ printk(KERN_DEBUG "PCI: Probing PCI hardware (bus %02x)\n", busnum);
+
+ return pci_scan_bus_parented(NULL, busnum, &pci_root_ops, sd);
+}
+
+extern u8 pci_cache_line_size;
+
+static int __init pcibios_init(void)
+{
+ struct cpuinfo_x86 *c = &boot_cpu_data;
+
+ if (!raw_pci_ops) {
+ printk(KERN_WARNING "PCI: System does not support PCI\n");
+ return 0;
+ }
+
+ /*
+ * Assume PCI cacheline size of 32 bytes for all x86s except K7/K8
+ * and P4. It's also good for 386/486s (which actually have 16)
+ * as quite a few PCI devices do not support smaller values.
+ */
+ pci_cache_line_size = 32 >> 2;
+ if (c->x86 >= 6 && c->x86_vendor == X86_VENDOR_AMD)
+ pci_cache_line_size = 64 >> 2; /* K7 & K8 */
+ else if (c->x86 > 6 && c->x86_vendor == X86_VENDOR_INTEL)
+ pci_cache_line_size = 128 >> 2; /* P4 */
+
+ pcibios_resource_survey();
+
+ if (pci_bf_sort >= pci_force_bf)
+ pci_sort_breadthfirst();
+#ifdef CONFIG_PCI_BIOS
+ if ((pci_probe & PCI_BIOS_SORT) && !(pci_probe & PCI_NO_SORT))
+ pcibios_sort();
+#endif
+ return 0;
+}
+
+subsys_initcall(pcibios_init);
+
+char * __devinit pcibios_setup(char *str)
+{
+ if (!strcmp(str, "off")) {
+ pci_probe = 0;
+ return NULL;
+ } else if (!strcmp(str, "bfsort")) {
+ pci_bf_sort = pci_force_bf;
+ return NULL;
+ } else if (!strcmp(str, "nobfsort")) {
+ pci_bf_sort = pci_force_nobf;
+ return NULL;
+ }
+#ifdef CONFIG_PCI_BIOS
+ else if (!strcmp(str, "bios")) {
+ pci_probe = PCI_PROBE_BIOS;
+ return NULL;
+ } else if (!strcmp(str, "nobios")) {
+ pci_probe &= ~PCI_PROBE_BIOS;
+ return NULL;
+ } else if (!strcmp(str, "nosort")) {
+ pci_probe |= PCI_NO_SORT;
+ return NULL;
+ } else if (!strcmp(str, "biosirq")) {
+ pci_probe |= PCI_BIOS_IRQ_SCAN;
+ return NULL;
+ } else if (!strncmp(str, "pirqaddr=", 9)) {
+ pirq_table_addr = simple_strtoul(str+9, NULL, 0);
+ return NULL;
+ }
+#endif
+#ifdef CONFIG_PCI_DIRECT
+ else if (!strcmp(str, "conf1")) {
+ pci_probe = PCI_PROBE_CONF1 | PCI_NO_CHECKS;
+ return NULL;
+ }
+ else if (!strcmp(str, "conf2")) {
+ pci_probe = PCI_PROBE_CONF2 | PCI_NO_CHECKS;
+ return NULL;
+ }
+#endif
+#ifdef CONFIG_PCI_MMCONFIG
+ else if (!strcmp(str, "nommconf")) {
+ pci_probe &= ~PCI_PROBE_MMCONF;
+ return NULL;
+ }
+#endif
+ else if (!strcmp(str, "noacpi")) {
+ acpi_noirq_set();
+ return NULL;
+ }
+ else if (!strcmp(str, "noearly")) {
+ pci_probe |= PCI_PROBE_NOEARLY;
+ return NULL;
+ }
+#ifndef CONFIG_X86_VISWS
+ else if (!strcmp(str, "usepirqmask")) {
+ pci_probe |= PCI_USE_PIRQ_MASK;
+ return NULL;
+ } else if (!strncmp(str, "irqmask=", 8)) {
+ pcibios_irq_mask = simple_strtol(str+8, NULL, 0);
+ return NULL;
+ } else if (!strncmp(str, "lastbus=", 8)) {
+ pcibios_last_bus = simple_strtol(str+8, NULL, 0);
+ return NULL;
+ }
+#endif
+ else if (!strcmp(str, "rom")) {
+ pci_probe |= PCI_ASSIGN_ROMS;
+ return NULL;
+ } else if (!strcmp(str, "assign-busses")) {
+ pci_probe |= PCI_ASSIGN_ALL_BUSSES;
+ return NULL;
+ } else if (!strcmp(str, "routeirq")) {
+ pci_routeirq = 1;
+ return NULL;
+ }
+ return str;
+}
+
+unsigned int pcibios_assign_all_busses(void)
+{
+ return (pci_probe & PCI_ASSIGN_ALL_BUSSES) ? 1 : 0;
+}
+
+int pcibios_enable_device(struct pci_dev *dev, int mask)
+{
+ int err;
+
+ if ((err = pcibios_enable_resources(dev, mask)) < 0)
+ return err;
+
+ if (!dev->msi_enabled)
+ return pcibios_enable_irq(dev);
+ return 0;
+}
+
+void pcibios_disable_device (struct pci_dev *dev)
+{
+ if (!dev->msi_enabled && pcibios_disable_irq)
+ pcibios_disable_irq(dev);
+}
+
+struct pci_bus *pci_scan_bus_with_sysdata(int busno)
+{
+ struct pci_bus *bus = NULL;
+ struct pci_sysdata *sd;
+
+ /*
+ * Allocate per-root-bus (not per bus) arch-specific data.
+ * TODO: leak; this memory is never freed.
+ * It's arguable whether it's worth the trouble to care.
+ */
+ sd = kzalloc(sizeof(*sd), GFP_KERNEL);
+ if (!sd) {
+ printk(KERN_ERR "PCI: OOM, skipping PCI bus %02x\n", busno);
+ return NULL;
+ }
+ sd->node = -1;
+ bus = pci_scan_bus(busno, &pci_root_ops, sd);
+ if (!bus)
+ kfree(sd);
+
+ return bus;
+}
--- /dev/null
+/*
+ * direct.c - Low-level direct PCI config space access
+ */
+
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/dmi.h>
+#include "pci.h"
+
+/*
+ * Functions for accessing PCI configuration space with type 1 accesses
+ */
+
+#define PCI_CONF1_ADDRESS(bus, devfn, reg) \
+ (0x80000000 | (bus << 16) | (devfn << 8) | (reg & ~3))
+
+int pci_conf1_read(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 *value)
+{
+ unsigned long flags;
+
+ if ((bus > 255) || (devfn > 255) || (reg > 255)) {
+ *value = -1;
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&pci_config_lock, flags);
+
+ outl(PCI_CONF1_ADDRESS(bus, devfn, reg), 0xCF8);
+
+ switch (len) {
+ case 1:
+ *value = inb(0xCFC + (reg & 3));
+ break;
+ case 2:
+ *value = inw(0xCFC + (reg & 2));
+ break;
+ case 4:
+ *value = inl(0xCFC);
+ break;
+ }
+
+ spin_unlock_irqrestore(&pci_config_lock, flags);
+
+ return 0;
+}
+
+int pci_conf1_write(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 value)
+{
+ unsigned long flags;
+
+ if ((bus > 255) || (devfn > 255) || (reg > 255))
+ return -EINVAL;
+
+ spin_lock_irqsave(&pci_config_lock, flags);
+
+ outl(PCI_CONF1_ADDRESS(bus, devfn, reg), 0xCF8);
+
+ switch (len) {
+ case 1:
+ outb((u8)value, 0xCFC + (reg & 3));
+ break;
+ case 2:
+ outw((u16)value, 0xCFC + (reg & 2));
+ break;
+ case 4:
+ outl((u32)value, 0xCFC);
+ break;
+ }
+
+ spin_unlock_irqrestore(&pci_config_lock, flags);
+
+ return 0;
+}
+
+#undef PCI_CONF1_ADDRESS
+
+struct pci_raw_ops pci_direct_conf1 = {
+ .read = pci_conf1_read,
+ .write = pci_conf1_write,
+};
+
+
+/*
+ * Functions for accessing PCI configuration space with type 2 accesses
+ */
+
+#define PCI_CONF2_ADDRESS(dev, reg) (u16)(0xC000 | (dev << 8) | reg)
+
+static int pci_conf2_read(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 *value)
+{
+ unsigned long flags;
+ int dev, fn;
+
+ if ((bus > 255) || (devfn > 255) || (reg > 255)) {
+ *value = -1;
+ return -EINVAL;
+ }
+
+ dev = PCI_SLOT(devfn);
+ fn = PCI_FUNC(devfn);
+
+ if (dev & 0x10)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ spin_lock_irqsave(&pci_config_lock, flags);
+
+ outb((u8)(0xF0 | (fn << 1)), 0xCF8);
+ outb((u8)bus, 0xCFA);
+
+ switch (len) {
+ case 1:
+ *value = inb(PCI_CONF2_ADDRESS(dev, reg));
+ break;
+ case 2:
+ *value = inw(PCI_CONF2_ADDRESS(dev, reg));
+ break;
+ case 4:
+ *value = inl(PCI_CONF2_ADDRESS(dev, reg));
+ break;
+ }
+
+ outb(0, 0xCF8);
+
+ spin_unlock_irqrestore(&pci_config_lock, flags);
+
+ return 0;
+}
+
+static int pci_conf2_write(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 value)
+{
+ unsigned long flags;
+ int dev, fn;
+
+ if ((bus > 255) || (devfn > 255) || (reg > 255))
+ return -EINVAL;
+
+ dev = PCI_SLOT(devfn);
+ fn = PCI_FUNC(devfn);
+
+ if (dev & 0x10)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ spin_lock_irqsave(&pci_config_lock, flags);
+
+ outb((u8)(0xF0 | (fn << 1)), 0xCF8);
+ outb((u8)bus, 0xCFA);
+
+ switch (len) {
+ case 1:
+ outb((u8)value, PCI_CONF2_ADDRESS(dev, reg));
+ break;
+ case 2:
+ outw((u16)value, PCI_CONF2_ADDRESS(dev, reg));
+ break;
+ case 4:
+ outl((u32)value, PCI_CONF2_ADDRESS(dev, reg));
+ break;
+ }
+
+ outb(0, 0xCF8);
+
+ spin_unlock_irqrestore(&pci_config_lock, flags);
+
+ return 0;
+}
+
+#undef PCI_CONF2_ADDRESS
+
+static struct pci_raw_ops pci_direct_conf2 = {
+ .read = pci_conf2_read,
+ .write = pci_conf2_write,
+};
+
+
+/*
+ * Before we decide to use direct hardware access mechanisms, we try to do some
+ * trivial checks to ensure it at least _seems_ to be working -- we just test
+ * whether bus 00 contains a host bridge (this is similar to checking
+ * techniques used in XFree86, but ours should be more reliable since we
+ * attempt to make use of direct access hints provided by the PCI BIOS).
+ *
+ * This should be close to trivial, but it isn't, because there are buggy
+ * chipsets (yes, you guessed it, by Intel and Compaq) that have no class ID.
+ */
+static int __init pci_sanity_check(struct pci_raw_ops *o)
+{
+ u32 x = 0;
+ int devfn;
+
+ if (pci_probe & PCI_NO_CHECKS)
+ return 1;
+ /* Assume Type 1 works for newer systems.
+ This handles machines that don't have anything on PCI Bus 0. */
+ if (dmi_get_year(DMI_BIOS_DATE) >= 2001)
+ return 1;
+
+ for (devfn = 0; devfn < 0x100; devfn++) {
+ if (o->read(0, 0, devfn, PCI_CLASS_DEVICE, 2, &x))
+ continue;
+ if (x == PCI_CLASS_BRIDGE_HOST || x == PCI_CLASS_DISPLAY_VGA)
+ return 1;
+
+ if (o->read(0, 0, devfn, PCI_VENDOR_ID, 2, &x))
+ continue;
+ if (x == PCI_VENDOR_ID_INTEL || x == PCI_VENDOR_ID_COMPAQ)
+ return 1;
+ }
+
+ DBG(KERN_WARNING "PCI: Sanity check failed\n");
+ return 0;
+}
+
+static int __init pci_check_type1(void)
+{
+ unsigned long flags;
+ unsigned int tmp;
+ int works = 0;
+
+ local_irq_save(flags);
+
+ outb(0x01, 0xCFB);
+ tmp = inl(0xCF8);
+ outl(0x80000000, 0xCF8);
+ if (inl(0xCF8) == 0x80000000 && pci_sanity_check(&pci_direct_conf1)) {
+ works = 1;
+ }
+ outl(tmp, 0xCF8);
+ local_irq_restore(flags);
+
+ return works;
+}
+
+static int __init pci_check_type2(void)
+{
+ unsigned long flags;
+ int works = 0;
+
+ local_irq_save(flags);
+
+ outb(0x00, 0xCFB);
+ outb(0x00, 0xCF8);
+ outb(0x00, 0xCFA);
+ if (inb(0xCF8) == 0x00 && inb(0xCFA) == 0x00 &&
+ pci_sanity_check(&pci_direct_conf2)) {
+ works = 1;
+ }
+
+ local_irq_restore(flags);
+
+ return works;
+}
+
+void __init pci_direct_init(int type)
+{
+ if (type == 0)
+ return;
+ printk(KERN_INFO "PCI: Using configuration type %d\n", type);
+ if (type == 1)
+ raw_pci_ops = &pci_direct_conf1;
+ else
+ raw_pci_ops = &pci_direct_conf2;
+}
+
+int __init pci_direct_probe(void)
+{
+ struct resource *region, *region2;
+
+ if ((pci_probe & PCI_PROBE_CONF1) == 0)
+ goto type2;
+ region = request_region(0xCF8, 8, "PCI conf1");
+ if (!region)
+ goto type2;
+
+ if (pci_check_type1())
+ return 1;
+ release_resource(region);
+
+ type2:
+ if ((pci_probe & PCI_PROBE_CONF2) == 0)
+ return 0;
+ region = request_region(0xCF8, 4, "PCI conf2");
+ if (!region)
+ return 0;
+ region2 = request_region(0xC000, 0x1000, "PCI conf2");
+ if (!region2)
+ goto fail2;
+
+ if (pci_check_type2()) {
+ printk(KERN_INFO "PCI: Using configuration type 2\n");
+ raw_pci_ops = &pci_direct_conf2;
+ return 2;
+ }
+
+ release_resource(region2);
+ fail2:
+ release_resource(region);
+ return 0;
+}
--- /dev/null
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <asm/pci-direct.h>
+#include <asm/io.h>
+#include "pci.h"
+
+/* Direct PCI access. This is used for PCI accesses in early boot before
+ the PCI subsystem works. */
+
+#define PDprintk(x...)
+
+u32 read_pci_config(u8 bus, u8 slot, u8 func, u8 offset)
+{
+ u32 v;
+ outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
+ v = inl(0xcfc);
+ if (v != 0xffffffff)
+ PDprintk("%x reading 4 from %x: %x\n", slot, offset, v);
+ return v;
+}
+
+u8 read_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset)
+{
+ u8 v;
+ outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
+ v = inb(0xcfc + (offset&3));
+ PDprintk("%x reading 1 from %x: %x\n", slot, offset, v);
+ return v;
+}
+
+u16 read_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset)
+{
+ u16 v;
+ outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
+ v = inw(0xcfc + (offset&2));
+ PDprintk("%x reading 2 from %x: %x\n", slot, offset, v);
+ return v;
+}
+
+void write_pci_config(u8 bus, u8 slot, u8 func, u8 offset,
+ u32 val)
+{
+ PDprintk("%x writing to %x: %x\n", slot, offset, val);
+ outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
+ outl(val, 0xcfc);
+}
+
+void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val)
+{
+ PDprintk("%x writing to %x: %x\n", slot, offset, val);
+ outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8);
+ outb(val, 0xcfc);
+}
+
+int early_pci_allowed(void)
+{
+ return (pci_probe & (PCI_PROBE_CONF1|PCI_PROBE_NOEARLY)) ==
+ PCI_PROBE_CONF1;
+}
--- /dev/null
+/*
+ * Exceptions for specific devices. Usually work-arounds for fatal design flaws.
+ */
+
+#include <linux/delay.h>
+#include <linux/dmi.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include "pci.h"
+
+
+static void __devinit pci_fixup_i450nx(struct pci_dev *d)
+{
+ /*
+ * i450NX -- Find and scan all secondary buses on all PXB's.
+ */
+ int pxb, reg;
+ u8 busno, suba, subb;
+
+ printk(KERN_WARNING "PCI: Searching for i450NX host bridges on %s\n", pci_name(d));
+ reg = 0xd0;
+ for(pxb=0; pxb<2; pxb++) {
+ pci_read_config_byte(d, reg++, &busno);
+ pci_read_config_byte(d, reg++, &suba);
+ pci_read_config_byte(d, reg++, &subb);
+ DBG("i450NX PXB %d: %02x/%02x/%02x\n", pxb, busno, suba, subb);
+ if (busno)
+ pci_scan_bus_with_sysdata(busno); /* Bus A */
+ if (suba < subb)
+ pci_scan_bus_with_sysdata(suba+1); /* Bus B */
+ }
+ pcibios_last_bus = -1;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82451NX, pci_fixup_i450nx);
+
+static void __devinit pci_fixup_i450gx(struct pci_dev *d)
+{
+ /*
+ * i450GX and i450KX -- Find and scan all secondary buses.
+ * (called separately for each PCI bridge found)
+ */
+ u8 busno;
+ pci_read_config_byte(d, 0x4a, &busno);
+ printk(KERN_INFO "PCI: i440KX/GX host bridge %s: secondary bus %02x\n", pci_name(d), busno);
+ pci_scan_bus_with_sysdata(busno);
+ pcibios_last_bus = -1;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454GX, pci_fixup_i450gx);
+
+static void __devinit pci_fixup_umc_ide(struct pci_dev *d)
+{
+ /*
+ * UM8886BF IDE controller sets region type bits incorrectly,
+ * therefore they look like memory despite of them being I/O.
+ */
+ int i;
+
+ printk(KERN_WARNING "PCI: Fixing base address flags for device %s\n", pci_name(d));
+ for(i=0; i<4; i++)
+ d->resource[i].flags |= PCI_BASE_ADDRESS_SPACE_IO;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8886BF, pci_fixup_umc_ide);
+
+static void __devinit pci_fixup_ncr53c810(struct pci_dev *d)
+{
+ /*
+ * NCR 53C810 returns class code 0 (at least on some systems).
+ * Fix class to be PCI_CLASS_STORAGE_SCSI
+ */
+ if (!d->class) {
+ printk(KERN_WARNING "PCI: fixing NCR 53C810 class code for %s\n", pci_name(d));
+ d->class = PCI_CLASS_STORAGE_SCSI << 8;
+ }
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, pci_fixup_ncr53c810);
+
+static void __devinit pci_fixup_latency(struct pci_dev *d)
+{
+ /*
+ * SiS 5597 and 5598 chipsets require latency timer set to
+ * at most 32 to avoid lockups.
+ */
+ DBG("PCI: Setting max latency to 32\n");
+ pcibios_max_latency = 32;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, pci_fixup_latency);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5598, pci_fixup_latency);
+
+static void __devinit pci_fixup_piix4_acpi(struct pci_dev *d)
+{
+ /*
+ * PIIX4 ACPI device: hardwired IRQ9
+ */
+ d->irq = 9;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, pci_fixup_piix4_acpi);
+
+/*
+ * Addresses issues with problems in the memory write queue timer in
+ * certain VIA Northbridges. This bugfix is per VIA's specifications,
+ * except for the KL133/KM133: clearing bit 5 on those Northbridges seems
+ * to trigger a bug in its integrated ProSavage video card, which
+ * causes screen corruption. We only clear bits 6 and 7 for that chipset,
+ * until VIA can provide us with definitive information on why screen
+ * corruption occurs, and what exactly those bits do.
+ *
+ * VIA 8363,8622,8361 Northbridges:
+ * - bits 5, 6, 7 at offset 0x55 need to be turned off
+ * VIA 8367 (KT266x) Northbridges:
+ * - bits 5, 6, 7 at offset 0x95 need to be turned off
+ * VIA 8363 rev 0x81/0x84 (KL133/KM133) Northbridges:
+ * - bits 6, 7 at offset 0x55 need to be turned off
+ */
+
+#define VIA_8363_KL133_REVISION_ID 0x81
+#define VIA_8363_KM133_REVISION_ID 0x84
+
+static void pci_fixup_via_northbridge_bug(struct pci_dev *d)
+{
+ u8 v;
+ int where = 0x55;
+ int mask = 0x1f; /* clear bits 5, 6, 7 by default */
+
+ if (d->device == PCI_DEVICE_ID_VIA_8367_0) {
+ /* fix pci bus latency issues resulted by NB bios error
+ it appears on bug free^Wreduced kt266x's bios forces
+ NB latency to zero */
+ pci_write_config_byte(d, PCI_LATENCY_TIMER, 0);
+
+ where = 0x95; /* the memory write queue timer register is
+ different for the KT266x's: 0x95 not 0x55 */
+ } else if (d->device == PCI_DEVICE_ID_VIA_8363_0 &&
+ (d->revision == VIA_8363_KL133_REVISION_ID ||
+ d->revision == VIA_8363_KM133_REVISION_ID)) {
+ mask = 0x3f; /* clear only bits 6 and 7; clearing bit 5
+ causes screen corruption on the KL133/KM133 */
+ }
+
+ pci_read_config_byte(d, where, &v);
+ if (v & ~mask) {
+ printk(KERN_WARNING "Disabling VIA memory write queue (PCI ID %04x, rev %02x): [%02x] %02x & %02x -> %02x\n", \
+ d->device, d->revision, where, v, mask, v & mask);
+ v &= mask;
+ pci_write_config_byte(d, where, v);
+ }
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, pci_fixup_via_northbridge_bug);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8622, pci_fixup_via_northbridge_bug);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, pci_fixup_via_northbridge_bug);
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8367_0, pci_fixup_via_northbridge_bug);
+DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, pci_fixup_via_northbridge_bug);
+DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8622, pci_fixup_via_northbridge_bug);
+DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, pci_fixup_via_northbridge_bug);
+DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8367_0, pci_fixup_via_northbridge_bug);
+
+/*
+ * For some reasons Intel decided that certain parts of their
+ * 815, 845 and some other chipsets must look like PCI-to-PCI bridges
+ * while they are obviously not. The 82801 family (AA, AB, BAM/CAM,
+ * BA/CA/DB and E) PCI bridges are actually HUB-to-PCI ones, according
+ * to Intel terminology. These devices do forward all addresses from
+ * system to PCI bus no matter what are their window settings, so they are
+ * "transparent" (or subtractive decoding) from programmers point of view.
+ */
+static void __devinit pci_fixup_transparent_bridge(struct pci_dev *dev)
+{
+ if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI &&
+ (dev->device & 0xff00) == 0x2400)
+ dev->transparent = 1;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_fixup_transparent_bridge);
+
+/*
+ * Fixup for C1 Halt Disconnect problem on nForce2 systems.
+ *
+ * From information provided by "Allen Martin" <AMartin@nvidia.com>:
+ *
+ * A hang is caused when the CPU generates a very fast CONNECT/HALT cycle
+ * sequence. Workaround is to set the SYSTEM_IDLE_TIMEOUT to 80 ns.
+ * This allows the state-machine and timer to return to a proper state within
+ * 80 ns of the CONNECT and probe appearing together. Since the CPU will not
+ * issue another HALT within 80 ns of the initial HALT, the failure condition
+ * is avoided.
+ */
+static void pci_fixup_nforce2(struct pci_dev *dev)
+{
+ u32 val;
+
+ /*
+ * Chip Old value New value
+ * C17 0x1F0FFF01 0x1F01FF01
+ * C18D 0x9F0FFF01 0x9F01FF01
+ *
+ * Northbridge chip version may be determined by
+ * reading the PCI revision ID (0xC1 or greater is C18D).
+ */
+ pci_read_config_dword(dev, 0x6c, &val);
+
+ /*
+ * Apply fixup if needed, but don't touch disconnect state
+ */
+ if ((val & 0x00FF0000) != 0x00010000) {
+ printk(KERN_WARNING "PCI: nForce2 C1 Halt Disconnect fixup\n");
+ pci_write_config_dword(dev, 0x6c, (val & 0xFF00FFFF) | 0x00010000);
+ }
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2, pci_fixup_nforce2);
+DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2, pci_fixup_nforce2);
+
+/* Max PCI Express root ports */
+#define MAX_PCIEROOT 6
+static int quirk_aspm_offset[MAX_PCIEROOT << 3];
+
+#define GET_INDEX(a, b) ((((a) - PCI_DEVICE_ID_INTEL_MCH_PA) << 3) + ((b) & 7))
+
+static int quirk_pcie_aspm_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
+{
+ return raw_pci_ops->read(0, bus->number, devfn, where, size, value);
+}
+
+/*
+ * Replace the original pci bus ops for write with a new one that will filter
+ * the request to insure ASPM cannot be enabled.
+ */
+static int quirk_pcie_aspm_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value)
+{
+ u8 offset;
+
+ offset = quirk_aspm_offset[GET_INDEX(bus->self->device, devfn)];
+
+ if ((offset) && (where == offset))
+ value = value & 0xfffffffc;
+
+ return raw_pci_ops->write(0, bus->number, devfn, where, size, value);
+}
+
+static struct pci_ops quirk_pcie_aspm_ops = {
+ .read = quirk_pcie_aspm_read,
+ .write = quirk_pcie_aspm_write,
+};
+
+/*
+ * Prevents PCI Express ASPM (Active State Power Management) being enabled.
+ *
+ * Save the register offset, where the ASPM control bits are located,
+ * for each PCI Express device that is in the device list of
+ * the root port in an array for fast indexing. Replace the bus ops
+ * with the modified one.
+ */
+static void pcie_rootport_aspm_quirk(struct pci_dev *pdev)
+{
+ int cap_base, i;
+ struct pci_bus *pbus;
+ struct pci_dev *dev;
+
+ if ((pbus = pdev->subordinate) == NULL)
+ return;
+
+ /*
+ * Check if the DID of pdev matches one of the six root ports. This
+ * check is needed in the case this function is called directly by the
+ * hot-plug driver.
+ */
+ if ((pdev->device < PCI_DEVICE_ID_INTEL_MCH_PA) ||
+ (pdev->device > PCI_DEVICE_ID_INTEL_MCH_PC1))
+ return;
+
+ if (list_empty(&pbus->devices)) {
+ /*
+ * If no device is attached to the root port at power-up or
+ * after hot-remove, the pbus->devices is empty and this code
+ * will set the offsets to zero and the bus ops to parent's bus
+ * ops, which is unmodified.
+ */
+ for (i= GET_INDEX(pdev->device, 0); i <= GET_INDEX(pdev->device, 7); ++i)
+ quirk_aspm_offset[i] = 0;
+
+ pbus->ops = pbus->parent->ops;
+ } else {
+ /*
+ * If devices are attached to the root port at power-up or
+ * after hot-add, the code loops through the device list of
+ * each root port to save the register offsets and replace the
+ * bus ops.
+ */
+ list_for_each_entry(dev, &pbus->devices, bus_list) {
+ /* There are 0 to 8 devices attached to this bus */
+ cap_base = pci_find_capability(dev, PCI_CAP_ID_EXP);
+ quirk_aspm_offset[GET_INDEX(pdev->device, dev->devfn)]= cap_base + 0x10;
+ }
+ pbus->ops = &quirk_pcie_aspm_ops;
+ }
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MCH_PA, pcie_rootport_aspm_quirk );
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MCH_PA1, pcie_rootport_aspm_quirk );
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MCH_PB, pcie_rootport_aspm_quirk );
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MCH_PB1, pcie_rootport_aspm_quirk );
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MCH_PC, pcie_rootport_aspm_quirk );
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_MCH_PC1, pcie_rootport_aspm_quirk );
+
+/*
+ * Fixup to mark boot BIOS video selected by BIOS before it changes
+ *
+ * From information provided by "Jon Smirl" <jonsmirl@gmail.com>
+ *
+ * The standard boot ROM sequence for an x86 machine uses the BIOS
+ * to select an initial video card for boot display. This boot video
+ * card will have it's BIOS copied to C0000 in system RAM.
+ * IORESOURCE_ROM_SHADOW is used to associate the boot video
+ * card with this copy. On laptops this copy has to be used since
+ * the main ROM may be compressed or combined with another image.
+ * See pci_map_rom() for use of this flag. IORESOURCE_ROM_SHADOW
+ * is marked here since the boot video device will be the only enabled
+ * video device at this point.
+ */
+
+static void __devinit pci_fixup_video(struct pci_dev *pdev)
+{
+ struct pci_dev *bridge;
+ struct pci_bus *bus;
+ u16 config;
+
+ if ((pdev->class >> 8) != PCI_CLASS_DISPLAY_VGA)
+ return;
+
+ /* Is VGA routed to us? */
+ bus = pdev->bus;
+ while (bus) {
+ bridge = bus->self;
+
+ /*
+ * From information provided by
+ * "David Miller" <davem@davemloft.net>
+ * The bridge control register is valid for PCI header
+ * type BRIDGE, or CARDBUS. Host to PCI controllers use
+ * PCI header type NORMAL.
+ */
+ if (bridge
+ &&((bridge->hdr_type == PCI_HEADER_TYPE_BRIDGE)
+ ||(bridge->hdr_type == PCI_HEADER_TYPE_CARDBUS))) {
+ pci_read_config_word(bridge, PCI_BRIDGE_CONTROL,
+ &config);
+ if (!(config & PCI_BRIDGE_CTL_VGA))
+ return;
+ }
+ bus = bus->parent;
+ }
+ pci_read_config_word(pdev, PCI_COMMAND, &config);
+ if (config & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) {
+ pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_SHADOW;
+ printk(KERN_DEBUG "Boot video device is %s\n", pci_name(pdev));
+ }
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, pci_fixup_video);
+
+/*
+ * Some Toshiba laptops need extra code to enable their TI TSB43AB22/A.
+ *
+ * We pretend to bring them out of full D3 state, and restore the proper
+ * IRQ, PCI cache line size, and BARs, otherwise the device won't function
+ * properly. In some cases, the device will generate an interrupt on
+ * the wrong IRQ line, causing any devices sharing the line it's
+ * *supposed* to use to be disabled by the kernel's IRQ debug code.
+ */
+static u16 toshiba_line_size;
+
+static struct dmi_system_id __devinitdata toshiba_ohci1394_dmi_table[] = {
+ {
+ .ident = "Toshiba PS5 based laptop",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "PS5"),
+ },
+ },
+ {
+ .ident = "Toshiba PSM4 based laptop",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "PSM4"),
+ },
+ },
+ {
+ .ident = "Toshiba A40 based laptop",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "PSA40U"),
+ },
+ },
+ { }
+};
+
+static void __devinit pci_pre_fixup_toshiba_ohci1394(struct pci_dev *dev)
+{
+ if (!dmi_check_system(toshiba_ohci1394_dmi_table))
+ return; /* only applies to certain Toshibas (so far) */
+
+ dev->current_state = PCI_D3cold;
+ pci_read_config_word(dev, PCI_CACHE_LINE_SIZE, &toshiba_line_size);
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, 0x8032,
+ pci_pre_fixup_toshiba_ohci1394);
+
+static void __devinit pci_post_fixup_toshiba_ohci1394(struct pci_dev *dev)
+{
+ if (!dmi_check_system(toshiba_ohci1394_dmi_table))
+ return; /* only applies to certain Toshibas (so far) */
+
+ /* Restore config space on Toshiba laptops */
+ pci_write_config_word(dev, PCI_CACHE_LINE_SIZE, toshiba_line_size);
+ pci_read_config_byte(dev, PCI_INTERRUPT_LINE, (u8 *)&dev->irq);
+ pci_write_config_dword(dev, PCI_BASE_ADDRESS_0,
+ pci_resource_start(dev, 0));
+ pci_write_config_dword(dev, PCI_BASE_ADDRESS_1,
+ pci_resource_start(dev, 1));
+}
+DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_TI, 0x8032,
+ pci_post_fixup_toshiba_ohci1394);
+
+
+/*
+ * Prevent the BIOS trapping accesses to the Cyrix CS5530A video device
+ * configuration space.
+ */
+static void pci_early_fixup_cyrix_5530(struct pci_dev *dev)
+{
+ u8 r;
+ /* clear 'F4 Video Configuration Trap' bit */
+ pci_read_config_byte(dev, 0x42, &r);
+ r &= 0xfd;
+ pci_write_config_byte(dev, 0x42, r);
+}
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY,
+ pci_early_fixup_cyrix_5530);
+DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY,
+ pci_early_fixup_cyrix_5530);
+
+/*
+ * Siemens Nixdorf AG FSC Multiprocessor Interrupt Controller:
+ * prevent update of the BAR0, which doesn't look like a normal BAR.
+ */
+static void __devinit pci_siemens_interrupt_controller(struct pci_dev *dev)
+{
+ dev->resource[0].flags |= IORESOURCE_PCI_FIXED;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SIEMENS, 0x0015,
+ pci_siemens_interrupt_controller);
--- /dev/null
+/*
+ * Low-Level PCI Access for i386 machines
+ *
+ * Copyright 1993, 1994 Drew Eckhardt
+ * Visionary Computing
+ * (Unix and Linux consulting and custom programming)
+ * Drew@Colorado.EDU
+ * +1 (303) 786-7975
+ *
+ * Drew's work was sponsored by:
+ * iX Multiuser Multitasking Magazine
+ * Hannover, Germany
+ * hm@ix.de
+ *
+ * Copyright 1997--2000 Martin Mares <mj@ucw.cz>
+ *
+ * For more information, please consult the following manuals (look at
+ * http://www.pcisig.com/ for how to get them):
+ *
+ * PCI BIOS Specification
+ * PCI Local Bus Specification
+ * PCI to PCI Bridge Specification
+ * PCI System Design Guide
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/errno.h>
+
+#include "pci.h"
+
+/*
+ * We need to avoid collisions with `mirrored' VGA ports
+ * and other strange ISA hardware, so we always want the
+ * addresses to be allocated in the 0x000-0x0ff region
+ * modulo 0x400.
+ *
+ * Why? Because some silly external IO cards only decode
+ * the low 10 bits of the IO address. The 0x00-0xff region
+ * is reserved for motherboard devices that decode all 16
+ * bits, so it's ok to allocate at, say, 0x2800-0x28ff,
+ * but we want to try to avoid allocating at 0x2900-0x2bff
+ * which might have be mirrored at 0x0100-0x03ff..
+ */
+void
+pcibios_align_resource(void *data, struct resource *res,
+ resource_size_t size, resource_size_t align)
+{
+ if (res->flags & IORESOURCE_IO) {
+ resource_size_t start = res->start;
+
+ if (start & 0x300) {
+ start = (start + 0x3ff) & ~0x3ff;
+ res->start = start;
+ }
+ }
+}
+
+
+/*
+ * Handle resources of PCI devices. If the world were perfect, we could
+ * just allocate all the resource regions and do nothing more. It isn't.
+ * On the other hand, we cannot just re-allocate all devices, as it would
+ * require us to know lots of host bridge internals. So we attempt to
+ * keep as much of the original configuration as possible, but tweak it
+ * when it's found to be wrong.
+ *
+ * Known BIOS problems we have to work around:
+ * - I/O or memory regions not configured
+ * - regions configured, but not enabled in the command register
+ * - bogus I/O addresses above 64K used
+ * - expansion ROMs left enabled (this may sound harmless, but given
+ * the fact the PCI specs explicitly allow address decoders to be
+ * shared between expansion ROMs and other resource regions, it's
+ * at least dangerous)
+ *
+ * Our solution:
+ * (1) Allocate resources for all buses behind PCI-to-PCI bridges.
+ * This gives us fixed barriers on where we can allocate.
+ * (2) Allocate resources for all enabled devices. If there is
+ * a collision, just mark the resource as unallocated. Also
+ * disable expansion ROMs during this step.
+ * (3) Try to allocate resources for disabled devices. If the
+ * resources were assigned correctly, everything goes well,
+ * if they weren't, they won't disturb allocation of other
+ * resources.
+ * (4) Assign new addresses to resources which were either
+ * not configured at all or misconfigured. If explicitly
+ * requested by the user, configure expansion ROM address
+ * as well.
+ */
+
+static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
+{
+ struct pci_bus *bus;
+ struct pci_dev *dev;
+ int idx;
+ struct resource *r, *pr;
+
+ /* Depth-First Search on bus tree */
+ list_for_each_entry(bus, bus_list, node) {
+ if ((dev = bus->self)) {
+ for (idx = PCI_BRIDGE_RESOURCES;
+ idx < PCI_NUM_RESOURCES; idx++) {
+ r = &dev->resource[idx];
+ if (!r->flags)
+ continue;
+ pr = pci_find_parent_resource(dev, r);
+ if (!r->start || !pr ||
+ request_resource(pr, r) < 0) {
+ printk(KERN_ERR "PCI: Cannot allocate "
+ "resource region %d "
+ "of bridge %s\n",
+ idx, pci_name(dev));
+ /*
+ * Something is wrong with the region.
+ * Invalidate the resource to prevent
+ * child resource allocations in this
+ * range.
+ */
+ r->flags = 0;
+ }
+ }
+ }
+ pcibios_allocate_bus_resources(&bus->children);
+ }
+}
+
+static void __init pcibios_allocate_resources(int pass)
+{
+ struct pci_dev *dev = NULL;
+ int idx, disabled;
+ u16 command;
+ struct resource *r, *pr;
+
+ for_each_pci_dev(dev) {
+ pci_read_config_word(dev, PCI_COMMAND, &command);
+ for (idx = 0; idx < PCI_ROM_RESOURCE; idx++) {
+ r = &dev->resource[idx];
+ if (r->parent) /* Already allocated */
+ continue;
+ if (!r->start) /* Address not assigned at all */
+ continue;
+ if (r->flags & IORESOURCE_IO)
+ disabled = !(command & PCI_COMMAND_IO);
+ else
+ disabled = !(command & PCI_COMMAND_MEMORY);
+ if (pass == disabled) {
+ DBG("PCI: Resource %08lx-%08lx "
+ "(f=%lx, d=%d, p=%d)\n",
+ r->start, r->end, r->flags, disabled, pass);
+ pr = pci_find_parent_resource(dev, r);
+ if (!pr || request_resource(pr, r) < 0) {
+ printk(KERN_ERR "PCI: Cannot allocate "
+ "resource region %d "
+ "of device %s\n",
+ idx, pci_name(dev));
+ /* We'll assign a new address later */
+ r->end -= r->start;
+ r->start = 0;
+ }
+ }
+ }
+ if (!pass) {
+ r = &dev->resource[PCI_ROM_RESOURCE];
+ if (r->flags & IORESOURCE_ROM_ENABLE) {
+ /* Turn the ROM off, leave the resource region,
+ * but keep it unregistered. */
+ u32 reg;
+ DBG("PCI: Switching off ROM of %s\n",
+ pci_name(dev));
+ r->flags &= ~IORESOURCE_ROM_ENABLE;
+ pci_read_config_dword(dev,
+ dev->rom_base_reg, ®);
+ pci_write_config_dword(dev, dev->rom_base_reg,
+ reg & ~PCI_ROM_ADDRESS_ENABLE);
+ }
+ }
+ }
+}
+
+static int __init pcibios_assign_resources(void)
+{
+ struct pci_dev *dev = NULL;
+ struct resource *r, *pr;
+
+ if (!(pci_probe & PCI_ASSIGN_ROMS)) {
+ /*
+ * Try to use BIOS settings for ROMs, otherwise let
+ * pci_assign_unassigned_resources() allocate the new
+ * addresses.
+ */
+ for_each_pci_dev(dev) {
+ r = &dev->resource[PCI_ROM_RESOURCE];
+ if (!r->flags || !r->start)
+ continue;
+ pr = pci_find_parent_resource(dev, r);
+ if (!pr || request_resource(pr, r) < 0) {
+ r->end -= r->start;
+ r->start = 0;
+ }
+ }
+ }
+
+ pci_assign_unassigned_resources();
+
+ return 0;
+}
+
+void __init pcibios_resource_survey(void)
+{
+ DBG("PCI: Allocating resources\n");
+ pcibios_allocate_bus_resources(&pci_root_buses);
+ pcibios_allocate_resources(0);
+ pcibios_allocate_resources(1);
+}
+
+/**
+ * called in fs_initcall (one below subsys_initcall),
+ * give a chance for motherboard reserve resources
+ */
+fs_initcall(pcibios_assign_resources);
+
+int pcibios_enable_resources(struct pci_dev *dev, int mask)
+{
+ u16 cmd, old_cmd;
+ int idx;
+ struct resource *r;
+
+ pci_read_config_word(dev, PCI_COMMAND, &cmd);
+ old_cmd = cmd;
+ for (idx = 0; idx < PCI_NUM_RESOURCES; idx++) {
+ /* Only set up the requested stuff */
+ if (!(mask & (1 << idx)))
+ continue;
+
+ r = &dev->resource[idx];
+ if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM)))
+ continue;
+ if ((idx == PCI_ROM_RESOURCE) &&
+ (!(r->flags & IORESOURCE_ROM_ENABLE)))
+ continue;
+ if (!r->start && r->end) {
+ printk(KERN_ERR "PCI: Device %s not available "
+ "because of resource %d collisions\n",
+ pci_name(dev), idx);
+ return -EINVAL;
+ }
+ if (r->flags & IORESOURCE_IO)
+ cmd |= PCI_COMMAND_IO;
+ if (r->flags & IORESOURCE_MEM)
+ cmd |= PCI_COMMAND_MEMORY;
+ }
+ if (cmd != old_cmd) {
+ printk("PCI: Enabling device %s (%04x -> %04x)\n",
+ pci_name(dev), old_cmd, cmd);
+ pci_write_config_word(dev, PCI_COMMAND, cmd);
+ }
+ return 0;
+}
+
+/*
+ * If we set up a device for bus mastering, we need to check the latency
+ * timer as certain crappy BIOSes forget to set it properly.
+ */
+unsigned int pcibios_max_latency = 255;
+
+void pcibios_set_master(struct pci_dev *dev)
+{
+ u8 lat;
+ pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
+ if (lat < 16)
+ lat = (64 <= pcibios_max_latency) ? 64 : pcibios_max_latency;
+ else if (lat > pcibios_max_latency)
+ lat = pcibios_max_latency;
+ else
+ return;
+ printk(KERN_DEBUG "PCI: Setting latency timer of device %s to %d\n",
+ pci_name(dev), lat);
+ pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat);
+}
+
+int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
+ enum pci_mmap_state mmap_state, int write_combine)
+{
+ unsigned long prot;
+
+ /* I/O space cannot be accessed via normal processor loads and
+ * stores on this platform.
+ */
+ if (mmap_state == pci_mmap_io)
+ return -EINVAL;
+
+ /* Leave vm_pgoff as-is, the PCI space address is the physical
+ * address on this platform.
+ */
+ prot = pgprot_val(vma->vm_page_prot);
+ if (boot_cpu_data.x86 > 3)
+ prot |= _PAGE_PCD | _PAGE_PWT;
+ vma->vm_page_prot = __pgprot(prot);
+
+ /* Write-combine setting is ignored, it is changed via the mtrr
+ * interfaces on this platform.
+ */
+ if (io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
+ vma->vm_end - vma->vm_start,
+ vma->vm_page_prot))
+ return -EAGAIN;
+
+ return 0;
+}
--- /dev/null
+#include <linux/pci.h>
+#include <linux/init.h>
+#include "pci.h"
+
+/* arch_initcall has too random ordering, so call the initializers
+ in the right sequence from here. */
+static __init int pci_access_init(void)
+{
+ int type __maybe_unused = 0;
+
+#ifdef CONFIG_PCI_DIRECT
+ type = pci_direct_probe();
+#endif
+#ifdef CONFIG_PCI_MMCONFIG
+ pci_mmcfg_init(type);
+#endif
+ if (raw_pci_ops)
+ return 0;
+#ifdef CONFIG_PCI_BIOS
+ pci_pcbios_init();
+#endif
+ /*
+ * don't check for raw_pci_ops here because we want pcbios as last
+ * fallback, yet it's needed to run first to set pcibios_last_bus
+ * in case legacy PCI probing is used. otherwise detecting peer busses
+ * fails.
+ */
+#ifdef CONFIG_PCI_DIRECT
+ pci_direct_init(type);
+#endif
+ if (!raw_pci_ops)
+ printk(KERN_ERR
+ "PCI: Fatal: No config space access function found\n");
+
+ return 0;
+}
+arch_initcall(pci_access_init);
--- /dev/null
+/*
+ * Low-Level PCI Support for PC -- Routing of Interrupts
+ *
+ * (c) 1999--2000 Martin Mares <mj@ucw.cz>
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/dmi.h>
+#include <asm/io.h>
+#include <asm/smp.h>
+#include <asm/io_apic.h>
+#include <linux/irq.h>
+#include <linux/acpi.h>
+
+#include "pci.h"
+
+#define PIRQ_SIGNATURE (('$' << 0) + ('P' << 8) + ('I' << 16) + ('R' << 24))
+#define PIRQ_VERSION 0x0100
+
+static int broken_hp_bios_irq9;
+static int acer_tm360_irqrouting;
+
+static struct irq_routing_table *pirq_table;
+
+static int pirq_enable_irq(struct pci_dev *dev);
+
+/*
+ * Never use: 0, 1, 2 (timer, keyboard, and cascade)
+ * Avoid using: 13, 14 and 15 (FP error and IDE).
+ * Penalize: 3, 4, 6, 7, 12 (known ISA uses: serial, floppy, parallel and mouse)
+ */
+unsigned int pcibios_irq_mask = 0xfff8;
+
+static int pirq_penalty[16] = {
+ 1000000, 1000000, 1000000, 1000, 1000, 0, 1000, 1000,
+ 0, 0, 0, 0, 1000, 100000, 100000, 100000
+};
+
+struct irq_router {
+ char *name;
+ u16 vendor, device;
+ int (*get)(struct pci_dev *router, struct pci_dev *dev, int pirq);
+ int (*set)(struct pci_dev *router, struct pci_dev *dev, int pirq, int new);
+};
+
+struct irq_router_handler {
+ u16 vendor;
+ int (*probe)(struct irq_router *r, struct pci_dev *router, u16 device);
+};
+
+int (*pcibios_enable_irq)(struct pci_dev *dev) = NULL;
+void (*pcibios_disable_irq)(struct pci_dev *dev) = NULL;
+
+/*
+ * Check passed address for the PCI IRQ Routing Table signature
+ * and perform checksum verification.
+ */
+
+static inline struct irq_routing_table * pirq_check_routing_table(u8 *addr)
+{
+ struct irq_routing_table *rt;
+ int i;
+ u8 sum;
+
+ rt = (struct irq_routing_table *) addr;
+ if (rt->signature != PIRQ_SIGNATURE ||
+ rt->version != PIRQ_VERSION ||
+ rt->size % 16 ||
+ rt->size < sizeof(struct irq_routing_table))
+ return NULL;
+ sum = 0;
+ for (i=0; i < rt->size; i++)
+ sum += addr[i];
+ if (!sum) {
+ DBG(KERN_DEBUG "PCI: Interrupt Routing Table found at 0x%p\n", rt);
+ return rt;
+ }
+ return NULL;
+}
+
+
+
+/*
+ * Search 0xf0000 -- 0xfffff for the PCI IRQ Routing Table.
+ */
+
+static struct irq_routing_table * __init pirq_find_routing_table(void)
+{
+ u8 *addr;
+ struct irq_routing_table *rt;
+
+ if (pirq_table_addr) {
+ rt = pirq_check_routing_table((u8 *) __va(pirq_table_addr));
+ if (rt)
+ return rt;
+ printk(KERN_WARNING "PCI: PIRQ table NOT found at pirqaddr\n");
+ }
+ for(addr = (u8 *) __va(0xf0000); addr < (u8 *) __va(0x100000); addr += 16) {
+ rt = pirq_check_routing_table(addr);
+ if (rt)
+ return rt;
+ }
+ return NULL;
+}
+
+/*
+ * If we have a IRQ routing table, use it to search for peer host
+ * bridges. It's a gross hack, but since there are no other known
+ * ways how to get a list of buses, we have to go this way.
+ */
+
+static void __init pirq_peer_trick(void)
+{
+ struct irq_routing_table *rt = pirq_table;
+ u8 busmap[256];
+ int i;
+ struct irq_info *e;
+
+ memset(busmap, 0, sizeof(busmap));
+ for(i=0; i < (rt->size - sizeof(struct irq_routing_table)) / sizeof(struct irq_info); i++) {
+ e = &rt->slots[i];
+#ifdef DEBUG
+ {
+ int j;
+ DBG(KERN_DEBUG "%02x:%02x slot=%02x", e->bus, e->devfn/8, e->slot);
+ for(j=0; j<4; j++)
+ DBG(" %d:%02x/%04x", j, e->irq[j].link, e->irq[j].bitmap);
+ DBG("\n");
+ }
+#endif
+ busmap[e->bus] = 1;
+ }
+ for(i = 1; i < 256; i++) {
+ if (!busmap[i] || pci_find_bus(0, i))
+ continue;
+ if (pci_scan_bus_with_sysdata(i))
+ printk(KERN_INFO "PCI: Discovered primary peer "
+ "bus %02x [IRQ]\n", i);
+ }
+ pcibios_last_bus = -1;
+}
+
+/*
+ * Code for querying and setting of IRQ routes on various interrupt routers.
+ */
+
+void eisa_set_level_irq(unsigned int irq)
+{
+ unsigned char mask = 1 << (irq & 7);
+ unsigned int port = 0x4d0 + (irq >> 3);
+ unsigned char val;
+ static u16 eisa_irq_mask;
+
+ if (irq >= 16 || (1 << irq) & eisa_irq_mask)
+ return;
+
+ eisa_irq_mask |= (1 << irq);
+ printk(KERN_DEBUG "PCI: setting IRQ %u as level-triggered\n", irq);
+ val = inb(port);
+ if (!(val & mask)) {
+ DBG(KERN_DEBUG " -> edge");
+ outb(val | mask, port);
+ }
+}
+
+/*
+ * Common IRQ routing practice: nybbles in config space,
+ * offset by some magic constant.
+ */
+static unsigned int read_config_nybble(struct pci_dev *router, unsigned offset, unsigned nr)
+{
+ u8 x;
+ unsigned reg = offset + (nr >> 1);
+
+ pci_read_config_byte(router, reg, &x);
+ return (nr & 1) ? (x >> 4) : (x & 0xf);
+}
+
+static void write_config_nybble(struct pci_dev *router, unsigned offset, unsigned nr, unsigned int val)
+{
+ u8 x;
+ unsigned reg = offset + (nr >> 1);
+
+ pci_read_config_byte(router, reg, &x);
+ x = (nr & 1) ? ((x & 0x0f) | (val << 4)) : ((x & 0xf0) | val);
+ pci_write_config_byte(router, reg, x);
+}
+
+/*
+ * ALI pirq entries are damn ugly, and completely undocumented.
+ * This has been figured out from pirq tables, and it's not a pretty
+ * picture.
+ */
+static int pirq_ali_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
+{
+ static const unsigned char irqmap[16] = { 0, 9, 3, 10, 4, 5, 7, 6, 1, 11, 0, 12, 0, 14, 0, 15 };
+
+ return irqmap[read_config_nybble(router, 0x48, pirq-1)];
+}
+
+static int pirq_ali_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
+{
+ static const unsigned char irqmap[16] = { 0, 8, 0, 2, 4, 5, 7, 6, 0, 1, 3, 9, 11, 0, 13, 15 };
+ unsigned int val = irqmap[irq];
+
+ if (val) {
+ write_config_nybble(router, 0x48, pirq-1, val);
+ return 1;
+ }
+ return 0;
+}
+
+/*
+ * The Intel PIIX4 pirq rules are fairly simple: "pirq" is
+ * just a pointer to the config space.
+ */
+static int pirq_piix_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
+{
+ u8 x;
+
+ pci_read_config_byte(router, pirq, &x);
+ return (x < 16) ? x : 0;
+}
+
+static int pirq_piix_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
+{
+ pci_write_config_byte(router, pirq, irq);
+ return 1;
+}
+
+/*
+ * The VIA pirq rules are nibble-based, like ALI,
+ * but without the ugly irq number munging.
+ * However, PIRQD is in the upper instead of lower 4 bits.
+ */
+static int pirq_via_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
+{
+ return read_config_nybble(router, 0x55, pirq == 4 ? 5 : pirq);
+}
+
+static int pirq_via_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
+{
+ write_config_nybble(router, 0x55, pirq == 4 ? 5 : pirq, irq);
+ return 1;
+}
+
+/*
+ * The VIA pirq rules are nibble-based, like ALI,
+ * but without the ugly irq number munging.
+ * However, for 82C586, nibble map is different .
+ */
+static int pirq_via586_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
+{
+ static const unsigned int pirqmap[5] = { 3, 2, 5, 1, 1 };
+ return read_config_nybble(router, 0x55, pirqmap[pirq-1]);
+}
+
+static int pirq_via586_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
+{
+ static const unsigned int pirqmap[5] = { 3, 2, 5, 1, 1 };
+ write_config_nybble(router, 0x55, pirqmap[pirq-1], irq);
+ return 1;
+}
+
+/*
+ * ITE 8330G pirq rules are nibble-based
+ * FIXME: pirqmap may be { 1, 0, 3, 2 },
+ * 2+3 are both mapped to irq 9 on my system
+ */
+static int pirq_ite_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
+{
+ static const unsigned char pirqmap[4] = { 1, 0, 2, 3 };
+ return read_config_nybble(router,0x43, pirqmap[pirq-1]);
+}
+
+static int pirq_ite_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
+{
+ static const unsigned char pirqmap[4] = { 1, 0, 2, 3 };
+ write_config_nybble(router, 0x43, pirqmap[pirq-1], irq);
+ return 1;
+}
+
+/*
+ * OPTI: high four bits are nibble pointer..
+ * I wonder what the low bits do?
+ */
+static int pirq_opti_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
+{
+ return read_config_nybble(router, 0xb8, pirq >> 4);
+}
+
+static int pirq_opti_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
+{
+ write_config_nybble(router, 0xb8, pirq >> 4, irq);
+ return 1;
+}
+
+/*
+ * Cyrix: nibble offset 0x5C
+ * 0x5C bits 7:4 is INTB bits 3:0 is INTA
+ * 0x5D bits 7:4 is INTD bits 3:0 is INTC
+ */
+static int pirq_cyrix_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
+{
+ return read_config_nybble(router, 0x5C, (pirq-1)^1);
+}
+
+static int pirq_cyrix_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
+{
+ write_config_nybble(router, 0x5C, (pirq-1)^1, irq);
+ return 1;
+}
+
+/*
+ * PIRQ routing for SiS 85C503 router used in several SiS chipsets.
+ * We have to deal with the following issues here:
+ * - vendors have different ideas about the meaning of link values
+ * - some onboard devices (integrated in the chipset) have special
+ * links and are thus routed differently (i.e. not via PCI INTA-INTD)
+ * - different revision of the router have a different layout for
+ * the routing registers, particularly for the onchip devices
+ *
+ * For all routing registers the common thing is we have one byte
+ * per routeable link which is defined as:
+ * bit 7 IRQ mapping enabled (0) or disabled (1)
+ * bits [6:4] reserved (sometimes used for onchip devices)
+ * bits [3:0] IRQ to map to
+ * allowed: 3-7, 9-12, 14-15
+ * reserved: 0, 1, 2, 8, 13
+ *
+ * The config-space registers located at 0x41/0x42/0x43/0x44 are
+ * always used to route the normal PCI INT A/B/C/D respectively.
+ * Apparently there are systems implementing PCI routing table using
+ * link values 0x01-0x04 and others using 0x41-0x44 for PCI INTA..D.
+ * We try our best to handle both link mappings.
+ *
+ * Currently (2003-05-21) it appears most SiS chipsets follow the
+ * definition of routing registers from the SiS-5595 southbridge.
+ * According to the SiS 5595 datasheets the revision id's of the
+ * router (ISA-bridge) should be 0x01 or 0xb0.
+ *
+ * Furthermore we've also seen lspci dumps with revision 0x00 and 0xb1.
+ * Looks like these are used in a number of SiS 5xx/6xx/7xx chipsets.
+ * They seem to work with the current routing code. However there is
+ * some concern because of the two USB-OHCI HCs (original SiS 5595
+ * had only one). YMMV.
+ *
+ * Onchip routing for router rev-id 0x01/0xb0 and probably 0x00/0xb1:
+ *
+ * 0x61: IDEIRQ:
+ * bits [6:5] must be written 01
+ * bit 4 channel-select primary (0), secondary (1)
+ *
+ * 0x62: USBIRQ:
+ * bit 6 OHCI function disabled (0), enabled (1)
+ *
+ * 0x6a: ACPI/SCI IRQ: bits 4-6 reserved
+ *
+ * 0x7e: Data Acq. Module IRQ - bits 4-6 reserved
+ *
+ * We support USBIRQ (in addition to INTA-INTD) and keep the
+ * IDE, ACPI and DAQ routing untouched as set by the BIOS.
+ *
+ * Currently the only reported exception is the new SiS 65x chipset
+ * which includes the SiS 69x southbridge. Here we have the 85C503
+ * router revision 0x04 and there are changes in the register layout
+ * mostly related to the different USB HCs with USB 2.0 support.
+ *
+ * Onchip routing for router rev-id 0x04 (try-and-error observation)
+ *
+ * 0x60/0x61/0x62/0x63: 1xEHCI and 3xOHCI (companion) USB-HCs
+ * bit 6-4 are probably unused, not like 5595
+ */
+
+#define PIRQ_SIS_IRQ_MASK 0x0f
+#define PIRQ_SIS_IRQ_DISABLE 0x80
+#define PIRQ_SIS_USB_ENABLE 0x40
+
+static int pirq_sis_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
+{
+ u8 x;
+ int reg;
+
+ reg = pirq;
+ if (reg >= 0x01 && reg <= 0x04)
+ reg += 0x40;
+ pci_read_config_byte(router, reg, &x);
+ return (x & PIRQ_SIS_IRQ_DISABLE) ? 0 : (x & PIRQ_SIS_IRQ_MASK);
+}
+
+static int pirq_sis_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
+{
+ u8 x;
+ int reg;
+
+ reg = pirq;
+ if (reg >= 0x01 && reg <= 0x04)
+ reg += 0x40;
+ pci_read_config_byte(router, reg, &x);
+ x &= ~(PIRQ_SIS_IRQ_MASK | PIRQ_SIS_IRQ_DISABLE);
+ x |= irq ? irq: PIRQ_SIS_IRQ_DISABLE;
+ pci_write_config_byte(router, reg, x);
+ return 1;
+}
+
+
+/*
+ * VLSI: nibble offset 0x74 - educated guess due to routing table and
+ * config space of VLSI 82C534 PCI-bridge/router (1004:0102)
+ * Tested on HP OmniBook 800 covering PIRQ 1, 2, 4, 8 for onboard
+ * devices, PIRQ 3 for non-pci(!) soundchip and (untested) PIRQ 6
+ * for the busbridge to the docking station.
+ */
+
+static int pirq_vlsi_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
+{
+ if (pirq > 8) {
+ printk(KERN_INFO "VLSI router pirq escape (%d)\n", pirq);
+ return 0;
+ }
+ return read_config_nybble(router, 0x74, pirq-1);
+}
+
+static int pirq_vlsi_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
+{
+ if (pirq > 8) {
+ printk(KERN_INFO "VLSI router pirq escape (%d)\n", pirq);
+ return 0;
+ }
+ write_config_nybble(router, 0x74, pirq-1, irq);
+ return 1;
+}
+
+/*
+ * ServerWorks: PCI interrupts mapped to system IRQ lines through Index
+ * and Redirect I/O registers (0x0c00 and 0x0c01). The Index register
+ * format is (PCIIRQ## | 0x10), e.g.: PCIIRQ10=0x1a. The Redirect
+ * register is a straight binary coding of desired PIC IRQ (low nibble).
+ *
+ * The 'link' value in the PIRQ table is already in the correct format
+ * for the Index register. There are some special index values:
+ * 0x00 for ACPI (SCI), 0x01 for USB, 0x02 for IDE0, 0x04 for IDE1,
+ * and 0x03 for SMBus.
+ */
+static int pirq_serverworks_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
+{
+ outb_p(pirq, 0xc00);
+ return inb(0xc01) & 0xf;
+}
+
+static int pirq_serverworks_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
+{
+ outb_p(pirq, 0xc00);
+ outb_p(irq, 0xc01);
+ return 1;
+}
+
+/* Support for AMD756 PCI IRQ Routing
+ * Jhon H. Caicedo <jhcaiced@osso.org.co>
+ * Jun/21/2001 0.2.0 Release, fixed to use "nybble" functions... (jhcaiced)
+ * Jun/19/2001 Alpha Release 0.1.0 (jhcaiced)
+ * The AMD756 pirq rules are nibble-based
+ * offset 0x56 0-3 PIRQA 4-7 PIRQB
+ * offset 0x57 0-3 PIRQC 4-7 PIRQD
+ */
+static int pirq_amd756_get(struct pci_dev *router, struct pci_dev *dev, int pirq)
+{
+ u8 irq;
+ irq = 0;
+ if (pirq <= 4)
+ {
+ irq = read_config_nybble(router, 0x56, pirq - 1);
+ }
+ printk(KERN_INFO "AMD756: dev %04x:%04x, router pirq : %d get irq : %2d\n",
+ dev->vendor, dev->device, pirq, irq);
+ return irq;
+}
+
+static int pirq_amd756_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
+{
+ printk(KERN_INFO "AMD756: dev %04x:%04x, router pirq : %d SET irq : %2d\n",
+ dev->vendor, dev->device, pirq, irq);
+ if (pirq <= 4)
+ {
+ write_config_nybble(router, 0x56, pirq - 1, irq);
+ }
+ return 1;
+}
+
+#ifdef CONFIG_PCI_BIOS
+
+static int pirq_bios_set(struct pci_dev *router, struct pci_dev *dev, int pirq, int irq)
+{
+ struct pci_dev *bridge;
+ int pin = pci_get_interrupt_pin(dev, &bridge);
+ return pcibios_set_irq_routing(bridge, pin, irq);
+}
+
+#endif
+
+static __init int intel_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
+{
+ static struct pci_device_id __initdata pirq_440gx[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443GX_0) },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443GX_2) },
+ { },
+ };
+
+ /* 440GX has a proprietary PIRQ router -- don't use it */
+ if (pci_dev_present(pirq_440gx))
+ return 0;
+
+ switch(device)
+ {
+ case PCI_DEVICE_ID_INTEL_82371FB_0:
+ case PCI_DEVICE_ID_INTEL_82371SB_0:
+ case PCI_DEVICE_ID_INTEL_82371AB_0:
+ case PCI_DEVICE_ID_INTEL_82371MX:
+ case PCI_DEVICE_ID_INTEL_82443MX_0:
+ case PCI_DEVICE_ID_INTEL_82801AA_0:
+ case PCI_DEVICE_ID_INTEL_82801AB_0:
+ case PCI_DEVICE_ID_INTEL_82801BA_0:
+ case PCI_DEVICE_ID_INTEL_82801BA_10:
+ case PCI_DEVICE_ID_INTEL_82801CA_0:
+ case PCI_DEVICE_ID_INTEL_82801CA_12:
+ case PCI_DEVICE_ID_INTEL_82801DB_0:
+ case PCI_DEVICE_ID_INTEL_82801E_0:
+ case PCI_DEVICE_ID_INTEL_82801EB_0:
+ case PCI_DEVICE_ID_INTEL_ESB_1:
+ case PCI_DEVICE_ID_INTEL_ICH6_0:
+ case PCI_DEVICE_ID_INTEL_ICH6_1:
+ case PCI_DEVICE_ID_INTEL_ICH7_0:
+ case PCI_DEVICE_ID_INTEL_ICH7_1:
+ case PCI_DEVICE_ID_INTEL_ICH7_30:
+ case PCI_DEVICE_ID_INTEL_ICH7_31:
+ case PCI_DEVICE_ID_INTEL_ESB2_0:
+ case PCI_DEVICE_ID_INTEL_ICH8_0:
+ case PCI_DEVICE_ID_INTEL_ICH8_1:
+ case PCI_DEVICE_ID_INTEL_ICH8_2:
+ case PCI_DEVICE_ID_INTEL_ICH8_3:
+ case PCI_DEVICE_ID_INTEL_ICH8_4:
+ case PCI_DEVICE_ID_INTEL_ICH9_0:
+ case PCI_DEVICE_ID_INTEL_ICH9_1:
+ case PCI_DEVICE_ID_INTEL_ICH9_2:
+ case PCI_DEVICE_ID_INTEL_ICH9_3:
+ case PCI_DEVICE_ID_INTEL_ICH9_4:
+ case PCI_DEVICE_ID_INTEL_ICH9_5:
+ case PCI_DEVICE_ID_INTEL_TOLAPAI_0:
+ r->name = "PIIX/ICH";
+ r->get = pirq_piix_get;
+ r->set = pirq_piix_set;
+ return 1;
+ }
+ return 0;
+}
+
+static __init int via_router_probe(struct irq_router *r,
+ struct pci_dev *router, u16 device)
+{
+ /* FIXME: We should move some of the quirk fixup stuff here */
+
+ /*
+ * work arounds for some buggy BIOSes
+ */
+ if (device == PCI_DEVICE_ID_VIA_82C586_0) {
+ switch(router->device) {
+ case PCI_DEVICE_ID_VIA_82C686:
+ /*
+ * Asus k7m bios wrongly reports 82C686A
+ * as 586-compatible
+ */
+ device = PCI_DEVICE_ID_VIA_82C686;
+ break;
+ case PCI_DEVICE_ID_VIA_8235:
+ /**
+ * Asus a7v-x bios wrongly reports 8235
+ * as 586-compatible
+ */
+ device = PCI_DEVICE_ID_VIA_8235;
+ break;
+ }
+ }
+
+ switch(device) {
+ case PCI_DEVICE_ID_VIA_82C586_0:
+ r->name = "VIA";
+ r->get = pirq_via586_get;
+ r->set = pirq_via586_set;
+ return 1;
+ case PCI_DEVICE_ID_VIA_82C596:
+ case PCI_DEVICE_ID_VIA_82C686:
+ case PCI_DEVICE_ID_VIA_8231:
+ case PCI_DEVICE_ID_VIA_8233A:
+ case PCI_DEVICE_ID_VIA_8235:
+ case PCI_DEVICE_ID_VIA_8237:
+ /* FIXME: add new ones for 8233/5 */
+ r->name = "VIA";
+ r->get = pirq_via_get;
+ r->set = pirq_via_set;
+ return 1;
+ }
+ return 0;
+}
+
+static __init int vlsi_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
+{
+ switch(device)
+ {
+ case PCI_DEVICE_ID_VLSI_82C534:
+ r->name = "VLSI 82C534";
+ r->get = pirq_vlsi_get;
+ r->set = pirq_vlsi_set;
+ return 1;
+ }
+ return 0;
+}
+
+
+static __init int serverworks_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
+{
+ switch(device)
+ {
+ case PCI_DEVICE_ID_SERVERWORKS_OSB4:
+ case PCI_DEVICE_ID_SERVERWORKS_CSB5:
+ r->name = "ServerWorks";
+ r->get = pirq_serverworks_get;
+ r->set = pirq_serverworks_set;
+ return 1;
+ }
+ return 0;
+}
+
+static __init int sis_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
+{
+ if (device != PCI_DEVICE_ID_SI_503)
+ return 0;
+
+ r->name = "SIS";
+ r->get = pirq_sis_get;
+ r->set = pirq_sis_set;
+ return 1;
+}
+
+static __init int cyrix_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
+{
+ switch(device)
+ {
+ case PCI_DEVICE_ID_CYRIX_5520:
+ r->name = "NatSemi";
+ r->get = pirq_cyrix_get;
+ r->set = pirq_cyrix_set;
+ return 1;
+ }
+ return 0;
+}
+
+static __init int opti_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
+{
+ switch(device)
+ {
+ case PCI_DEVICE_ID_OPTI_82C700:
+ r->name = "OPTI";
+ r->get = pirq_opti_get;
+ r->set = pirq_opti_set;
+ return 1;
+ }
+ return 0;
+}
+
+static __init int ite_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
+{
+ switch(device)
+ {
+ case PCI_DEVICE_ID_ITE_IT8330G_0:
+ r->name = "ITE";
+ r->get = pirq_ite_get;
+ r->set = pirq_ite_set;
+ return 1;
+ }
+ return 0;
+}
+
+static __init int ali_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
+{
+ switch(device)
+ {
+ case PCI_DEVICE_ID_AL_M1533:
+ case PCI_DEVICE_ID_AL_M1563:
+ printk(KERN_DEBUG "PCI: Using ALI IRQ Router\n");
+ r->name = "ALI";
+ r->get = pirq_ali_get;
+ r->set = pirq_ali_set;
+ return 1;
+ }
+ return 0;
+}
+
+static __init int amd_router_probe(struct irq_router *r, struct pci_dev *router, u16 device)
+{
+ switch(device)
+ {
+ case PCI_DEVICE_ID_AMD_VIPER_740B:
+ r->name = "AMD756";
+ break;
+ case PCI_DEVICE_ID_AMD_VIPER_7413:
+ r->name = "AMD766";
+ break;
+ case PCI_DEVICE_ID_AMD_VIPER_7443:
+ r->name = "AMD768";
+ break;
+ default:
+ return 0;
+ }
+ r->get = pirq_amd756_get;
+ r->set = pirq_amd756_set;
+ return 1;
+}
+
+static __initdata struct irq_router_handler pirq_routers[] = {
+ { PCI_VENDOR_ID_INTEL, intel_router_probe },
+ { PCI_VENDOR_ID_AL, ali_router_probe },
+ { PCI_VENDOR_ID_ITE, ite_router_probe },
+ { PCI_VENDOR_ID_VIA, via_router_probe },
+ { PCI_VENDOR_ID_OPTI, opti_router_probe },
+ { PCI_VENDOR_ID_SI, sis_router_probe },
+ { PCI_VENDOR_ID_CYRIX, cyrix_router_probe },
+ { PCI_VENDOR_ID_VLSI, vlsi_router_probe },
+ { PCI_VENDOR_ID_SERVERWORKS, serverworks_router_probe },
+ { PCI_VENDOR_ID_AMD, amd_router_probe },
+ /* Someone with docs needs to add the ATI Radeon IGP */
+ { 0, NULL }
+};
+static struct irq_router pirq_router;
+static struct pci_dev *pirq_router_dev;
+
+
+/*
+ * FIXME: should we have an option to say "generic for
+ * chipset" ?
+ */
+
+static void __init pirq_find_router(struct irq_router *r)
+{
+ struct irq_routing_table *rt = pirq_table;
+ struct irq_router_handler *h;
+
+#ifdef CONFIG_PCI_BIOS
+ if (!rt->signature) {
+ printk(KERN_INFO "PCI: Using BIOS for IRQ routing\n");
+ r->set = pirq_bios_set;
+ r->name = "BIOS";
+ return;
+ }
+#endif
+
+ /* Default unless a driver reloads it */
+ r->name = "default";
+ r->get = NULL;
+ r->set = NULL;
+
+ DBG(KERN_DEBUG "PCI: Attempting to find IRQ router for %04x:%04x\n",
+ rt->rtr_vendor, rt->rtr_device);
+
+ pirq_router_dev = pci_get_bus_and_slot(rt->rtr_bus, rt->rtr_devfn);
+ if (!pirq_router_dev) {
+ DBG(KERN_DEBUG "PCI: Interrupt router not found at "
+ "%02x:%02x\n", rt->rtr_bus, rt->rtr_devfn);
+ return;
+ }
+
+ for( h = pirq_routers; h->vendor; h++) {
+ /* First look for a router match */
+ if (rt->rtr_vendor == h->vendor && h->probe(r, pirq_router_dev, rt->rtr_device))
+ break;
+ /* Fall back to a device match */
+ if (pirq_router_dev->vendor == h->vendor && h->probe(r, pirq_router_dev, pirq_router_dev->device))
+ break;
+ }
+ printk(KERN_INFO "PCI: Using IRQ router %s [%04x/%04x] at %s\n",
+ pirq_router.name,
+ pirq_router_dev->vendor,
+ pirq_router_dev->device,
+ pci_name(pirq_router_dev));
+
+ /* The device remains referenced for the kernel lifetime */
+}
+
+static struct irq_info *pirq_get_info(struct pci_dev *dev)
+{
+ struct irq_routing_table *rt = pirq_table;
+ int entries = (rt->size - sizeof(struct irq_routing_table)) / sizeof(struct irq_info);
+ struct irq_info *info;
+
+ for (info = rt->slots; entries--; info++)
+ if (info->bus == dev->bus->number && PCI_SLOT(info->devfn) == PCI_SLOT(dev->devfn))
+ return info;
+ return NULL;
+}
+
+static int pcibios_lookup_irq(struct pci_dev *dev, int assign)
+{
+ u8 pin;
+ struct irq_info *info;
+ int i, pirq, newirq;
+ int irq = 0;
+ u32 mask;
+ struct irq_router *r = &pirq_router;
+ struct pci_dev *dev2 = NULL;
+ char *msg = NULL;
+
+ /* Find IRQ pin */
+ pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+ if (!pin) {
+ DBG(KERN_DEBUG " -> no interrupt pin\n");
+ return 0;
+ }
+ pin = pin - 1;
+
+ /* Find IRQ routing entry */
+
+ if (!pirq_table)
+ return 0;
+
+ DBG(KERN_DEBUG "IRQ for %s[%c]", pci_name(dev), 'A' + pin);
+ info = pirq_get_info(dev);
+ if (!info) {
+ DBG(" -> not found in routing table\n" KERN_DEBUG);
+ return 0;
+ }
+ pirq = info->irq[pin].link;
+ mask = info->irq[pin].bitmap;
+ if (!pirq) {
+ DBG(" -> not routed\n" KERN_DEBUG);
+ return 0;
+ }
+ DBG(" -> PIRQ %02x, mask %04x, excl %04x", pirq, mask, pirq_table->exclusive_irqs);
+ mask &= pcibios_irq_mask;
+
+ /* Work around broken HP Pavilion Notebooks which assign USB to
+ IRQ 9 even though it is actually wired to IRQ 11 */
+
+ if (broken_hp_bios_irq9 && pirq == 0x59 && dev->irq == 9) {
+ dev->irq = 11;
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 11);
+ r->set(pirq_router_dev, dev, pirq, 11);
+ }
+
+ /* same for Acer Travelmate 360, but with CB and irq 11 -> 10 */
+ if (acer_tm360_irqrouting && dev->irq == 11 && dev->vendor == PCI_VENDOR_ID_O2) {
+ pirq = 0x68;
+ mask = 0x400;
+ dev->irq = r->get(pirq_router_dev, dev, pirq);
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
+ }
+
+ /*
+ * Find the best IRQ to assign: use the one
+ * reported by the device if possible.
+ */
+ newirq = dev->irq;
+ if (newirq && !((1 << newirq) & mask)) {
+ if ( pci_probe & PCI_USE_PIRQ_MASK) newirq = 0;
+ else printk("\n" KERN_WARNING
+ "PCI: IRQ %i for device %s doesn't match PIRQ mask "
+ "- try pci=usepirqmask\n" KERN_DEBUG, newirq,
+ pci_name(dev));
+ }
+ if (!newirq && assign) {
+ for (i = 0; i < 16; i++) {
+ if (!(mask & (1 << i)))
+ continue;
+ if (pirq_penalty[i] < pirq_penalty[newirq] && can_request_irq(i, IRQF_SHARED))
+ newirq = i;
+ }
+ }
+ DBG(" -> newirq=%d", newirq);
+
+ /* Check if it is hardcoded */
+ if ((pirq & 0xf0) == 0xf0) {
+ irq = pirq & 0xf;
+ DBG(" -> hardcoded IRQ %d\n", irq);
+ msg = "Hardcoded";
+ } else if ( r->get && (irq = r->get(pirq_router_dev, dev, pirq)) && \
+ ((!(pci_probe & PCI_USE_PIRQ_MASK)) || ((1 << irq) & mask)) ) {
+ DBG(" -> got IRQ %d\n", irq);
+ msg = "Found";
+ eisa_set_level_irq(irq);
+ } else if (newirq && r->set && (dev->class >> 8) != PCI_CLASS_DISPLAY_VGA) {
+ DBG(" -> assigning IRQ %d", newirq);
+ if (r->set(pirq_router_dev, dev, pirq, newirq)) {
+ eisa_set_level_irq(newirq);
+ DBG(" ... OK\n");
+ msg = "Assigned";
+ irq = newirq;
+ }
+ }
+
+ if (!irq) {
+ DBG(" ... failed\n");
+ if (newirq && mask == (1 << newirq)) {
+ msg = "Guessed";
+ irq = newirq;
+ } else
+ return 0;
+ }
+ printk(KERN_INFO "PCI: %s IRQ %d for device %s\n", msg, irq, pci_name(dev));
+
+ /* Update IRQ for all devices with the same pirq value */
+ while ((dev2 = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev2)) != NULL) {
+ pci_read_config_byte(dev2, PCI_INTERRUPT_PIN, &pin);
+ if (!pin)
+ continue;
+ pin--;
+ info = pirq_get_info(dev2);
+ if (!info)
+ continue;
+ if (info->irq[pin].link == pirq) {
+ /* We refuse to override the dev->irq information. Give a warning! */
+ if ( dev2->irq && dev2->irq != irq && \
+ (!(pci_probe & PCI_USE_PIRQ_MASK) || \
+ ((1 << dev2->irq) & mask)) ) {
+#ifndef CONFIG_PCI_MSI
+ printk(KERN_INFO "IRQ routing conflict for %s, have irq %d, want irq %d\n",
+ pci_name(dev2), dev2->irq, irq);
+#endif
+ continue;
+ }
+ dev2->irq = irq;
+ pirq_penalty[irq]++;
+ if (dev != dev2)
+ printk(KERN_INFO "PCI: Sharing IRQ %d with %s\n", irq, pci_name(dev2));
+ }
+ }
+ return 1;
+}
+
+static void __init pcibios_fixup_irqs(void)
+{
+ struct pci_dev *dev = NULL;
+ u8 pin;
+
+ DBG(KERN_DEBUG "PCI: IRQ fixup\n");
+ while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+ /*
+ * If the BIOS has set an out of range IRQ number, just ignore it.
+ * Also keep track of which IRQ's are already in use.
+ */
+ if (dev->irq >= 16) {
+ DBG(KERN_DEBUG "%s: ignoring bogus IRQ %d\n", pci_name(dev), dev->irq);
+ dev->irq = 0;
+ }
+ /* If the IRQ is already assigned to a PCI device, ignore its ISA use penalty */
+ if (pirq_penalty[dev->irq] >= 100 && pirq_penalty[dev->irq] < 100000)
+ pirq_penalty[dev->irq] = 0;
+ pirq_penalty[dev->irq]++;
+ }
+
+ dev = NULL;
+ while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+ pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+#ifdef CONFIG_X86_IO_APIC
+ /*
+ * Recalculate IRQ numbers if we use the I/O APIC.
+ */
+ if (io_apic_assign_pci_irqs)
+ {
+ int irq;
+
+ if (pin) {
+ pin--; /* interrupt pins are numbered starting from 1 */
+ irq = IO_APIC_get_PCI_irq_vector(dev->bus->number, PCI_SLOT(dev->devfn), pin);
+ /*
+ * Busses behind bridges are typically not listed in the MP-table.
+ * In this case we have to look up the IRQ based on the parent bus,
+ * parent slot, and pin number. The SMP code detects such bridged
+ * busses itself so we should get into this branch reliably.
+ */
+ if (irq < 0 && dev->bus->parent) { /* go back to the bridge */
+ struct pci_dev * bridge = dev->bus->self;
+
+ pin = (pin + PCI_SLOT(dev->devfn)) % 4;
+ irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number,
+ PCI_SLOT(bridge->devfn), pin);
+ if (irq >= 0)
+ printk(KERN_WARNING "PCI: using PPB %s[%c] to get irq %d\n",
+ pci_name(bridge), 'A' + pin, irq);
+ }
+ if (irq >= 0) {
+ printk(KERN_INFO "PCI->APIC IRQ transform: %s[%c] -> IRQ %d\n",
+ pci_name(dev), 'A' + pin, irq);
+ dev->irq = irq;
+ }
+ }
+ }
+#endif
+ /*
+ * Still no IRQ? Try to lookup one...
+ */
+ if (pin && !dev->irq)
+ pcibios_lookup_irq(dev, 0);
+ }
+}
+
+/*
+ * Work around broken HP Pavilion Notebooks which assign USB to
+ * IRQ 9 even though it is actually wired to IRQ 11
+ */
+static int __init fix_broken_hp_bios_irq9(struct dmi_system_id *d)
+{
+ if (!broken_hp_bios_irq9) {
+ broken_hp_bios_irq9 = 1;
+ printk(KERN_INFO "%s detected - fixing broken IRQ routing\n", d->ident);
+ }
+ return 0;
+}
+
+/*
+ * Work around broken Acer TravelMate 360 Notebooks which assign
+ * Cardbus to IRQ 11 even though it is actually wired to IRQ 10
+ */
+static int __init fix_acer_tm360_irqrouting(struct dmi_system_id *d)
+{
+ if (!acer_tm360_irqrouting) {
+ acer_tm360_irqrouting = 1;
+ printk(KERN_INFO "%s detected - fixing broken IRQ routing\n", d->ident);
+ }
+ return 0;
+}
+
+static struct dmi_system_id __initdata pciirq_dmi_table[] = {
+ {
+ .callback = fix_broken_hp_bios_irq9,
+ .ident = "HP Pavilion N5400 Series Laptop",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_BIOS_VERSION, "GE.M1.03"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "HP Pavilion Notebook Model GE"),
+ DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"),
+ },
+ },
+ {
+ .callback = fix_acer_tm360_irqrouting,
+ .ident = "Acer TravelMate 36x Laptop",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
+ },
+ },
+ { }
+};
+
+static int __init pcibios_irq_init(void)
+{
+ DBG(KERN_DEBUG "PCI: IRQ init\n");
+
+ if (pcibios_enable_irq || raw_pci_ops == NULL)
+ return 0;
+
+ dmi_check_system(pciirq_dmi_table);
+
+ pirq_table = pirq_find_routing_table();
+
+#ifdef CONFIG_PCI_BIOS
+ if (!pirq_table && (pci_probe & PCI_BIOS_IRQ_SCAN))
+ pirq_table = pcibios_get_irq_routing_table();
+#endif
+ if (pirq_table) {
+ pirq_peer_trick();
+ pirq_find_router(&pirq_router);
+ if (pirq_table->exclusive_irqs) {
+ int i;
+ for (i=0; i<16; i++)
+ if (!(pirq_table->exclusive_irqs & (1 << i)))
+ pirq_penalty[i] += 100;
+ }
+ /* If we're using the I/O APIC, avoid using the PCI IRQ routing table */
+ if (io_apic_assign_pci_irqs)
+ pirq_table = NULL;
+ }
+
+ pcibios_enable_irq = pirq_enable_irq;
+
+ pcibios_fixup_irqs();
+ return 0;
+}
+
+subsys_initcall(pcibios_irq_init);
+
+
+static void pirq_penalize_isa_irq(int irq, int active)
+{
+ /*
+ * If any ISAPnP device reports an IRQ in its list of possible
+ * IRQ's, we try to avoid assigning it to PCI devices.
+ */
+ if (irq < 16) {
+ if (active)
+ pirq_penalty[irq] += 1000;
+ else
+ pirq_penalty[irq] += 100;
+ }
+}
+
+void pcibios_penalize_isa_irq(int irq, int active)
+{
+#ifdef CONFIG_ACPI
+ if (!acpi_noirq)
+ acpi_penalize_isa_irq(irq, active);
+ else
+#endif
+ pirq_penalize_isa_irq(irq, active);
+}
+
+static int pirq_enable_irq(struct pci_dev *dev)
+{
+ u8 pin;
+ struct pci_dev *temp_dev;
+
+ pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+ if (pin && !pcibios_lookup_irq(dev, 1) && !dev->irq) {
+ char *msg = "";
+
+ pin--; /* interrupt pins are numbered starting from 1 */
+
+ if (io_apic_assign_pci_irqs) {
+ int irq;
+
+ irq = IO_APIC_get_PCI_irq_vector(dev->bus->number, PCI_SLOT(dev->devfn), pin);
+ /*
+ * Busses behind bridges are typically not listed in the MP-table.
+ * In this case we have to look up the IRQ based on the parent bus,
+ * parent slot, and pin number. The SMP code detects such bridged
+ * busses itself so we should get into this branch reliably.
+ */
+ temp_dev = dev;
+ while (irq < 0 && dev->bus->parent) { /* go back to the bridge */
+ struct pci_dev * bridge = dev->bus->self;
+
+ pin = (pin + PCI_SLOT(dev->devfn)) % 4;
+ irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number,
+ PCI_SLOT(bridge->devfn), pin);
+ if (irq >= 0)
+ printk(KERN_WARNING "PCI: using PPB %s[%c] to get irq %d\n",
+ pci_name(bridge), 'A' + pin, irq);
+ dev = bridge;
+ }
+ dev = temp_dev;
+ if (irq >= 0) {
+ printk(KERN_INFO "PCI->APIC IRQ transform: %s[%c] -> IRQ %d\n",
+ pci_name(dev), 'A' + pin, irq);
+ dev->irq = irq;
+ return 0;
+ } else
+ msg = " Probably buggy MP table.";
+ } else if (pci_probe & PCI_BIOS_IRQ_SCAN)
+ msg = "";
+ else
+ msg = " Please try using pci=biosirq.";
+
+ /* With IDE legacy devices the IRQ lookup failure is not a problem.. */
+ if (dev->class >> 8 == PCI_CLASS_STORAGE_IDE && !(dev->class & 0x5))
+ return 0;
+
+ printk(KERN_WARNING "PCI: No IRQ known for interrupt pin %c of device %s.%s\n",
+ 'A' + pin, pci_name(dev), msg);
+ }
+ return 0;
+}
--- /dev/null
+/*
+ * legacy.c - traditional, old school PCI bus probing
+ */
+#include <linux/init.h>
+#include <linux/pci.h>
+#include "pci.h"
+
+/*
+ * Discover remaining PCI buses in case there are peer host bridges.
+ * We use the number of last PCI bus provided by the PCI BIOS.
+ */
+static void __devinit pcibios_fixup_peer_bridges(void)
+{
+ int n, devfn;
+
+ if (pcibios_last_bus <= 0 || pcibios_last_bus >= 0xff)
+ return;
+ DBG("PCI: Peer bridge fixup\n");
+
+ for (n=0; n <= pcibios_last_bus; n++) {
+ u32 l;
+ if (pci_find_bus(0, n))
+ continue;
+ for (devfn = 0; devfn < 256; devfn += 8) {
+ if (!raw_pci_ops->read(0, n, devfn, PCI_VENDOR_ID, 2, &l) &&
+ l != 0x0000 && l != 0xffff) {
+ DBG("Found device at %02x:%02x [%04x]\n", n, devfn, l);
+ printk(KERN_INFO "PCI: Discovered peer bus %02x\n", n);
+ pci_scan_bus_with_sysdata(n);
+ break;
+ }
+ }
+ }
+}
+
+static int __init pci_legacy_init(void)
+{
+ if (!raw_pci_ops) {
+ printk("PCI: System does not support PCI\n");
+ return 0;
+ }
+
+ if (pcibios_scanned++)
+ return 0;
+
+ printk("PCI: Probing PCI hardware\n");
+ pci_root_bus = pcibios_scan_root(0);
+ if (pci_root_bus)
+ pci_bus_add_devices(pci_root_bus);
+
+ pcibios_fixup_peer_bridges();
+
+ return 0;
+}
+
+subsys_initcall(pci_legacy_init);
--- /dev/null
+/*
+ * mmconfig-shared.c - Low-level direct PCI config space access via
+ * MMCONFIG - common code between i386 and x86-64.
+ *
+ * This code does:
+ * - known chipset handling
+ * - ACPI decoding and validation
+ *
+ * Per-architecture code takes care of the mappings and accesses
+ * themselves.
+ */
+
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <linux/bitmap.h>
+#include <asm/e820.h>
+
+#include "pci.h"
+
+/* aperture is up to 256MB but BIOS may reserve less */
+#define MMCONFIG_APER_MIN (2 * 1024*1024)
+#define MMCONFIG_APER_MAX (256 * 1024*1024)
+
+DECLARE_BITMAP(pci_mmcfg_fallback_slots, 32*PCI_MMCFG_MAX_CHECK_BUS);
+
+/* Indicate if the mmcfg resources have been placed into the resource table. */
+static int __initdata pci_mmcfg_resources_inserted;
+
+/* K8 systems have some devices (typically in the builtin northbridge)
+ that are only accessible using type1
+ Normally this can be expressed in the MCFG by not listing them
+ and assigning suitable _SEGs, but this isn't implemented in some BIOS.
+ Instead try to discover all devices on bus 0 that are unreachable using MM
+ and fallback for them. */
+static void __init unreachable_devices(void)
+{
+ int i, bus;
+ /* Use the max bus number from ACPI here? */
+ for (bus = 0; bus < PCI_MMCFG_MAX_CHECK_BUS; bus++) {
+ for (i = 0; i < 32; i++) {
+ unsigned int devfn = PCI_DEVFN(i, 0);
+ u32 val1, val2;
+
+ pci_conf1_read(0, bus, devfn, 0, 4, &val1);
+ if (val1 == 0xffffffff)
+ continue;
+
+ if (pci_mmcfg_arch_reachable(0, bus, devfn)) {
+ raw_pci_ops->read(0, bus, devfn, 0, 4, &val2);
+ if (val1 == val2)
+ continue;
+ }
+ set_bit(i + 32 * bus, pci_mmcfg_fallback_slots);
+ printk(KERN_NOTICE "PCI: No mmconfig possible on device"
+ " %02x:%02x\n", bus, i);
+ }
+ }
+}
+
+static const char __init *pci_mmcfg_e7520(void)
+{
+ u32 win;
+ pci_conf1_read(0, 0, PCI_DEVFN(0,0), 0xce, 2, &win);
+
+ win = win & 0xf000;
+ if(win == 0x0000 || win == 0xf000)
+ pci_mmcfg_config_num = 0;
+ else {
+ pci_mmcfg_config_num = 1;
+ pci_mmcfg_config = kzalloc(sizeof(pci_mmcfg_config[0]), GFP_KERNEL);
+ if (!pci_mmcfg_config)
+ return NULL;
+ pci_mmcfg_config[0].address = win << 16;
+ pci_mmcfg_config[0].pci_segment = 0;
+ pci_mmcfg_config[0].start_bus_number = 0;
+ pci_mmcfg_config[0].end_bus_number = 255;
+ }
+
+ return "Intel Corporation E7520 Memory Controller Hub";
+}
+
+static const char __init *pci_mmcfg_intel_945(void)
+{
+ u32 pciexbar, mask = 0, len = 0;
+
+ pci_mmcfg_config_num = 1;
+
+ pci_conf1_read(0, 0, PCI_DEVFN(0,0), 0x48, 4, &pciexbar);
+
+ /* Enable bit */
+ if (!(pciexbar & 1))
+ pci_mmcfg_config_num = 0;
+
+ /* Size bits */
+ switch ((pciexbar >> 1) & 3) {
+ case 0:
+ mask = 0xf0000000U;
+ len = 0x10000000U;
+ break;
+ case 1:
+ mask = 0xf8000000U;
+ len = 0x08000000U;
+ break;
+ case 2:
+ mask = 0xfc000000U;
+ len = 0x04000000U;
+ break;
+ default:
+ pci_mmcfg_config_num = 0;
+ }
+
+ /* Errata #2, things break when not aligned on a 256Mb boundary */
+ /* Can only happen in 64M/128M mode */
+
+ if ((pciexbar & mask) & 0x0fffffffU)
+ pci_mmcfg_config_num = 0;
+
+ /* Don't hit the APIC registers and their friends */
+ if ((pciexbar & mask) >= 0xf0000000U)
+ pci_mmcfg_config_num = 0;
+
+ if (pci_mmcfg_config_num) {
+ pci_mmcfg_config = kzalloc(sizeof(pci_mmcfg_config[0]), GFP_KERNEL);
+ if (!pci_mmcfg_config)
+ return NULL;
+ pci_mmcfg_config[0].address = pciexbar & mask;
+ pci_mmcfg_config[0].pci_segment = 0;
+ pci_mmcfg_config[0].start_bus_number = 0;
+ pci_mmcfg_config[0].end_bus_number = (len >> 20) - 1;
+ }
+
+ return "Intel Corporation 945G/GZ/P/PL Express Memory Controller Hub";
+}
+
+struct pci_mmcfg_hostbridge_probe {
+ u32 vendor;
+ u32 device;
+ const char *(*probe)(void);
+};
+
+static struct pci_mmcfg_hostbridge_probe pci_mmcfg_probes[] __initdata = {
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, pci_mmcfg_e7520 },
+ { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82945G_HB, pci_mmcfg_intel_945 },
+};
+
+static int __init pci_mmcfg_check_hostbridge(void)
+{
+ u32 l;
+ u16 vendor, device;
+ int i;
+ const char *name;
+
+ pci_conf1_read(0, 0, PCI_DEVFN(0,0), 0, 4, &l);
+ vendor = l & 0xffff;
+ device = (l >> 16) & 0xffff;
+
+ pci_mmcfg_config_num = 0;
+ pci_mmcfg_config = NULL;
+ name = NULL;
+
+ for (i = 0; !name && i < ARRAY_SIZE(pci_mmcfg_probes); i++) {
+ if (pci_mmcfg_probes[i].vendor == vendor &&
+ pci_mmcfg_probes[i].device == device)
+ name = pci_mmcfg_probes[i].probe();
+ }
+
+ if (name) {
+ printk(KERN_INFO "PCI: Found %s %s MMCONFIG support.\n",
+ name, pci_mmcfg_config_num ? "with" : "without");
+ }
+
+ return name != NULL;
+}
+
+static void __init pci_mmcfg_insert_resources(unsigned long resource_flags)
+{
+#define PCI_MMCFG_RESOURCE_NAME_LEN 19
+ int i;
+ struct resource *res;
+ char *names;
+ unsigned num_buses;
+
+ res = kcalloc(PCI_MMCFG_RESOURCE_NAME_LEN + sizeof(*res),
+ pci_mmcfg_config_num, GFP_KERNEL);
+ if (!res) {
+ printk(KERN_ERR "PCI: Unable to allocate MMCONFIG resources\n");
+ return;
+ }
+
+ names = (void *)&res[pci_mmcfg_config_num];
+ for (i = 0; i < pci_mmcfg_config_num; i++, res++) {
+ struct acpi_mcfg_allocation *cfg = &pci_mmcfg_config[i];
+ num_buses = cfg->end_bus_number - cfg->start_bus_number + 1;
+ res->name = names;
+ snprintf(names, PCI_MMCFG_RESOURCE_NAME_LEN, "PCI MMCONFIG %u",
+ cfg->pci_segment);
+ res->start = cfg->address;
+ res->end = res->start + (num_buses << 20) - 1;
+ res->flags = IORESOURCE_MEM | resource_flags;
+ insert_resource(&iomem_resource, res);
+ names += PCI_MMCFG_RESOURCE_NAME_LEN;
+ }
+
+ /* Mark that the resources have been inserted. */
+ pci_mmcfg_resources_inserted = 1;
+}
+
+static void __init pci_mmcfg_reject_broken(int type)
+{
+ typeof(pci_mmcfg_config[0]) *cfg;
+
+ if ((pci_mmcfg_config_num == 0) ||
+ (pci_mmcfg_config == NULL) ||
+ (pci_mmcfg_config[0].address == 0))
+ return;
+
+ cfg = &pci_mmcfg_config[0];
+
+ /*
+ * Handle more broken MCFG tables on Asus etc.
+ * They only contain a single entry for bus 0-0.
+ */
+ if (pci_mmcfg_config_num == 1 &&
+ cfg->pci_segment == 0 &&
+ (cfg->start_bus_number | cfg->end_bus_number) == 0) {
+ printk(KERN_ERR "PCI: start and end of bus number is 0. "
+ "Rejected as broken MCFG.\n");
+ goto reject;
+ }
+
+ /*
+ * Only do this check when type 1 works. If it doesn't work
+ * assume we run on a Mac and always use MCFG
+ */
+ if (type == 1 && !e820_all_mapped(cfg->address,
+ cfg->address + MMCONFIG_APER_MIN,
+ E820_RESERVED)) {
+ printk(KERN_ERR "PCI: BIOS Bug: MCFG area at %Lx is not"
+ " E820-reserved\n", cfg->address);
+ goto reject;
+ }
+ return;
+
+reject:
+ printk(KERN_ERR "PCI: Not using MMCONFIG.\n");
+ kfree(pci_mmcfg_config);
+ pci_mmcfg_config = NULL;
+ pci_mmcfg_config_num = 0;
+}
+
+void __init pci_mmcfg_init(int type)
+{
+ int known_bridge = 0;
+
+ if ((pci_probe & PCI_PROBE_MMCONF) == 0)
+ return;
+
+ if (type == 1 && pci_mmcfg_check_hostbridge())
+ known_bridge = 1;
+
+ if (!known_bridge) {
+ acpi_table_parse(ACPI_SIG_MCFG, acpi_parse_mcfg);
+ pci_mmcfg_reject_broken(type);
+ }
+
+ if ((pci_mmcfg_config_num == 0) ||
+ (pci_mmcfg_config == NULL) ||
+ (pci_mmcfg_config[0].address == 0))
+ return;
+
+ if (pci_mmcfg_arch_init()) {
+ if (type == 1)
+ unreachable_devices();
+ if (known_bridge)
+ pci_mmcfg_insert_resources(IORESOURCE_BUSY);
+ pci_probe = (pci_probe & ~PCI_PROBE_MASK) | PCI_PROBE_MMCONF;
+ } else {
+ /*
+ * Signal not to attempt to insert mmcfg resources because
+ * the architecture mmcfg setup could not initialize.
+ */
+ pci_mmcfg_resources_inserted = 1;
+ }
+}
+
+static int __init pci_mmcfg_late_insert_resources(void)
+{
+ /*
+ * If resources are already inserted or we are not using MMCONFIG,
+ * don't insert the resources.
+ */
+ if ((pci_mmcfg_resources_inserted == 1) ||
+ (pci_probe & PCI_PROBE_MMCONF) == 0 ||
+ (pci_mmcfg_config_num == 0) ||
+ (pci_mmcfg_config == NULL) ||
+ (pci_mmcfg_config[0].address == 0))
+ return 1;
+
+ /*
+ * Attempt to insert the mmcfg resources but not with the busy flag
+ * marked so it won't cause request errors when __request_region is
+ * called.
+ */
+ pci_mmcfg_insert_resources(0);
+
+ return 0;
+}
+
+/*
+ * Perform MMCONFIG resource insertion after PCI initialization to allow for
+ * misprogrammed MCFG tables that state larger sizes but actually conflict
+ * with other system resources.
+ */
+late_initcall(pci_mmcfg_late_insert_resources);
--- /dev/null
+/*
+ * Copyright (C) 2004 Matthew Wilcox <matthew@wil.cx>
+ * Copyright (C) 2004 Intel Corp.
+ *
+ * This code is released under the GNU General Public License version 2.
+ */
+
+/*
+ * mmconfig.c - Low-level direct PCI config space access via MMCONFIG
+ */
+
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/acpi.h>
+#include <asm/e820.h>
+#include "pci.h"
+
+/* Assume systems with more busses have correct MCFG */
+#define mmcfg_virt_addr ((void __iomem *) fix_to_virt(FIX_PCIE_MCFG))
+
+/* The base address of the last MMCONFIG device accessed */
+static u32 mmcfg_last_accessed_device;
+static int mmcfg_last_accessed_cpu;
+
+/*
+ * Functions for accessing PCI configuration space with MMCONFIG accesses
+ */
+static u32 get_base_addr(unsigned int seg, int bus, unsigned devfn)
+{
+ struct acpi_mcfg_allocation *cfg;
+ int cfg_num;
+
+ if (seg == 0 && bus < PCI_MMCFG_MAX_CHECK_BUS &&
+ test_bit(PCI_SLOT(devfn) + 32*bus, pci_mmcfg_fallback_slots))
+ return 0;
+
+ for (cfg_num = 0; cfg_num < pci_mmcfg_config_num; cfg_num++) {
+ cfg = &pci_mmcfg_config[cfg_num];
+ if (cfg->pci_segment == seg &&
+ (cfg->start_bus_number <= bus) &&
+ (cfg->end_bus_number >= bus))
+ return cfg->address;
+ }
+
+ /* Fall back to type 0 */
+ return 0;
+}
+
+/*
+ * This is always called under pci_config_lock
+ */
+static void pci_exp_set_dev_base(unsigned int base, int bus, int devfn)
+{
+ u32 dev_base = base | (bus << 20) | (devfn << 12);
+ int cpu = smp_processor_id();
+ if (dev_base != mmcfg_last_accessed_device ||
+ cpu != mmcfg_last_accessed_cpu) {
+ mmcfg_last_accessed_device = dev_base;
+ mmcfg_last_accessed_cpu = cpu;
+ set_fixmap_nocache(FIX_PCIE_MCFG, dev_base);
+ }
+}
+
+static int pci_mmcfg_read(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 *value)
+{
+ unsigned long flags;
+ u32 base;
+
+ if ((bus > 255) || (devfn > 255) || (reg > 4095)) {
+ *value = -1;
+ return -EINVAL;
+ }
+
+ base = get_base_addr(seg, bus, devfn);
+ if (!base)
+ return pci_conf1_read(seg,bus,devfn,reg,len,value);
+
+ spin_lock_irqsave(&pci_config_lock, flags);
+
+ pci_exp_set_dev_base(base, bus, devfn);
+
+ switch (len) {
+ case 1:
+ *value = mmio_config_readb(mmcfg_virt_addr + reg);
+ break;
+ case 2:
+ *value = mmio_config_readw(mmcfg_virt_addr + reg);
+ break;
+ case 4:
+ *value = mmio_config_readl(mmcfg_virt_addr + reg);
+ break;
+ }
+ spin_unlock_irqrestore(&pci_config_lock, flags);
+
+ return 0;
+}
+
+static int pci_mmcfg_write(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 value)
+{
+ unsigned long flags;
+ u32 base;
+
+ if ((bus > 255) || (devfn > 255) || (reg > 4095))
+ return -EINVAL;
+
+ base = get_base_addr(seg, bus, devfn);
+ if (!base)
+ return pci_conf1_write(seg,bus,devfn,reg,len,value);
+
+ spin_lock_irqsave(&pci_config_lock, flags);
+
+ pci_exp_set_dev_base(base, bus, devfn);
+
+ switch (len) {
+ case 1:
+ mmio_config_writeb(mmcfg_virt_addr + reg, value);
+ break;
+ case 2:
+ mmio_config_writew(mmcfg_virt_addr + reg, value);
+ break;
+ case 4:
+ mmio_config_writel(mmcfg_virt_addr + reg, value);
+ break;
+ }
+ spin_unlock_irqrestore(&pci_config_lock, flags);
+
+ return 0;
+}
+
+static struct pci_raw_ops pci_mmcfg = {
+ .read = pci_mmcfg_read,
+ .write = pci_mmcfg_write,
+};
+
+int __init pci_mmcfg_arch_reachable(unsigned int seg, unsigned int bus,
+ unsigned int devfn)
+{
+ return get_base_addr(seg, bus, devfn) != 0;
+}
+
+int __init pci_mmcfg_arch_init(void)
+{
+ printk(KERN_INFO "PCI: Using MMCONFIG\n");
+ raw_pci_ops = &pci_mmcfg;
+ return 1;
+}
--- /dev/null
+/*
+ * numa.c - Low-level PCI access for NUMA-Q machines
+ */
+
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/nodemask.h>
+#include "pci.h"
+
+#define BUS2QUAD(global) (mp_bus_id_to_node[global])
+#define BUS2LOCAL(global) (mp_bus_id_to_local[global])
+#define QUADLOCAL2BUS(quad,local) (quad_local_to_mp_bus_id[quad][local])
+
+#define PCI_CONF1_MQ_ADDRESS(bus, devfn, reg) \
+ (0x80000000 | (BUS2LOCAL(bus) << 16) | (devfn << 8) | (reg & ~3))
+
+static int pci_conf1_mq_read(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 *value)
+{
+ unsigned long flags;
+
+ if (!value || (bus >= MAX_MP_BUSSES) || (devfn > 255) || (reg > 255))
+ return -EINVAL;
+
+ spin_lock_irqsave(&pci_config_lock, flags);
+
+ outl_quad(PCI_CONF1_MQ_ADDRESS(bus, devfn, reg), 0xCF8, BUS2QUAD(bus));
+
+ switch (len) {
+ case 1:
+ *value = inb_quad(0xCFC + (reg & 3), BUS2QUAD(bus));
+ break;
+ case 2:
+ *value = inw_quad(0xCFC + (reg & 2), BUS2QUAD(bus));
+ break;
+ case 4:
+ *value = inl_quad(0xCFC, BUS2QUAD(bus));
+ break;
+ }
+
+ spin_unlock_irqrestore(&pci_config_lock, flags);
+
+ return 0;
+}
+
+static int pci_conf1_mq_write(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 value)
+{
+ unsigned long flags;
+
+ if ((bus >= MAX_MP_BUSSES) || (devfn > 255) || (reg > 255))
+ return -EINVAL;
+
+ spin_lock_irqsave(&pci_config_lock, flags);
+
+ outl_quad(PCI_CONF1_MQ_ADDRESS(bus, devfn, reg), 0xCF8, BUS2QUAD(bus));
+
+ switch (len) {
+ case 1:
+ outb_quad((u8)value, 0xCFC + (reg & 3), BUS2QUAD(bus));
+ break;
+ case 2:
+ outw_quad((u16)value, 0xCFC + (reg & 2), BUS2QUAD(bus));
+ break;
+ case 4:
+ outl_quad((u32)value, 0xCFC, BUS2QUAD(bus));
+ break;
+ }
+
+ spin_unlock_irqrestore(&pci_config_lock, flags);
+
+ return 0;
+}
+
+#undef PCI_CONF1_MQ_ADDRESS
+
+static struct pci_raw_ops pci_direct_conf1_mq = {
+ .read = pci_conf1_mq_read,
+ .write = pci_conf1_mq_write
+};
+
+
+static void __devinit pci_fixup_i450nx(struct pci_dev *d)
+{
+ /*
+ * i450NX -- Find and scan all secondary buses on all PXB's.
+ */
+ int pxb, reg;
+ u8 busno, suba, subb;
+ int quad = BUS2QUAD(d->bus->number);
+
+ printk("PCI: Searching for i450NX host bridges on %s\n", pci_name(d));
+ reg = 0xd0;
+ for(pxb=0; pxb<2; pxb++) {
+ pci_read_config_byte(d, reg++, &busno);
+ pci_read_config_byte(d, reg++, &suba);
+ pci_read_config_byte(d, reg++, &subb);
+ DBG("i450NX PXB %d: %02x/%02x/%02x\n", pxb, busno, suba, subb);
+ if (busno) {
+ /* Bus A */
+ pci_scan_bus_with_sysdata(QUADLOCAL2BUS(quad, busno));
+ }
+ if (suba < subb) {
+ /* Bus B */
+ pci_scan_bus_with_sysdata(QUADLOCAL2BUS(quad, suba+1));
+ }
+ }
+ pcibios_last_bus = -1;
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82451NX, pci_fixup_i450nx);
+
+static int __init pci_numa_init(void)
+{
+ int quad;
+
+ raw_pci_ops = &pci_direct_conf1_mq;
+
+ if (pcibios_scanned++)
+ return 0;
+
+ pci_root_bus = pcibios_scan_root(0);
+ if (pci_root_bus)
+ pci_bus_add_devices(pci_root_bus);
+ if (num_online_nodes() > 1)
+ for_each_online_node(quad) {
+ if (quad == 0)
+ continue;
+ printk("Scanning PCI bus %d for quad %d\n",
+ QUADLOCAL2BUS(quad,0), quad);
+ pci_scan_bus_with_sysdata(QUADLOCAL2BUS(quad, 0));
+ }
+ return 0;
+}
+
+subsys_initcall(pci_numa_init);
--- /dev/null
+/*
+ * BIOS32 and PCI BIOS handling.
+ */
+
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/uaccess.h>
+#include "pci.h"
+#include "pci-functions.h"
+
+
+/* BIOS32 signature: "_32_" */
+#define BIOS32_SIGNATURE (('_' << 0) + ('3' << 8) + ('2' << 16) + ('_' << 24))
+
+/* PCI signature: "PCI " */
+#define PCI_SIGNATURE (('P' << 0) + ('C' << 8) + ('I' << 16) + (' ' << 24))
+
+/* PCI service signature: "$PCI" */
+#define PCI_SERVICE (('$' << 0) + ('P' << 8) + ('C' << 16) + ('I' << 24))
+
+/* PCI BIOS hardware mechanism flags */
+#define PCIBIOS_HW_TYPE1 0x01
+#define PCIBIOS_HW_TYPE2 0x02
+#define PCIBIOS_HW_TYPE1_SPEC 0x10
+#define PCIBIOS_HW_TYPE2_SPEC 0x20
+
+/*
+ * This is the standard structure used to identify the entry point
+ * to the BIOS32 Service Directory, as documented in
+ * Standard BIOS 32-bit Service Directory Proposal
+ * Revision 0.4 May 24, 1993
+ * Phoenix Technologies Ltd.
+ * Norwood, MA
+ * and the PCI BIOS specification.
+ */
+
+union bios32 {
+ struct {
+ unsigned long signature; /* _32_ */
+ unsigned long entry; /* 32 bit physical address */
+ unsigned char revision; /* Revision level, 0 */
+ unsigned char length; /* Length in paragraphs should be 01 */
+ unsigned char checksum; /* All bytes must add up to zero */
+ unsigned char reserved[5]; /* Must be zero */
+ } fields;
+ char chars[16];
+};
+
+/*
+ * Physical address of the service directory. I don't know if we're
+ * allowed to have more than one of these or not, so just in case
+ * we'll make pcibios_present() take a memory start parameter and store
+ * the array there.
+ */
+
+static struct {
+ unsigned long address;
+ unsigned short segment;
+} bios32_indirect = { 0, __KERNEL_CS };
+
+/*
+ * Returns the entry point for the given service, NULL on error
+ */
+
+static unsigned long bios32_service(unsigned long service)
+{
+ unsigned char return_code; /* %al */
+ unsigned long address; /* %ebx */
+ unsigned long length; /* %ecx */
+ unsigned long entry; /* %edx */
+ unsigned long flags;
+
+ local_irq_save(flags);
+ __asm__("lcall *(%%edi); cld"
+ : "=a" (return_code),
+ "=b" (address),
+ "=c" (length),
+ "=d" (entry)
+ : "0" (service),
+ "1" (0),
+ "D" (&bios32_indirect));
+ local_irq_restore(flags);
+
+ switch (return_code) {
+ case 0:
+ return address + entry;
+ case 0x80: /* Not present */
+ printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service);
+ return 0;
+ default: /* Shouldn't happen */
+ printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n",
+ service, return_code);
+ return 0;
+ }
+}
+
+static struct {
+ unsigned long address;
+ unsigned short segment;
+} pci_indirect = { 0, __KERNEL_CS };
+
+static int pci_bios_present;
+
+static int __devinit check_pcibios(void)
+{
+ u32 signature, eax, ebx, ecx;
+ u8 status, major_ver, minor_ver, hw_mech;
+ unsigned long flags, pcibios_entry;
+
+ if ((pcibios_entry = bios32_service(PCI_SERVICE))) {
+ pci_indirect.address = pcibios_entry + PAGE_OFFSET;
+
+ local_irq_save(flags);
+ __asm__(
+ "lcall *(%%edi); cld\n\t"
+ "jc 1f\n\t"
+ "xor %%ah, %%ah\n"
+ "1:"
+ : "=d" (signature),
+ "=a" (eax),
+ "=b" (ebx),
+ "=c" (ecx)
+ : "1" (PCIBIOS_PCI_BIOS_PRESENT),
+ "D" (&pci_indirect)
+ : "memory");
+ local_irq_restore(flags);
+
+ status = (eax >> 8) & 0xff;
+ hw_mech = eax & 0xff;
+ major_ver = (ebx >> 8) & 0xff;
+ minor_ver = ebx & 0xff;
+ if (pcibios_last_bus < 0)
+ pcibios_last_bus = ecx & 0xff;
+ DBG("PCI: BIOS probe returned s=%02x hw=%02x ver=%02x.%02x l=%02x\n",
+ status, hw_mech, major_ver, minor_ver, pcibios_last_bus);
+ if (status || signature != PCI_SIGNATURE) {
+ printk (KERN_ERR "PCI: BIOS BUG #%x[%08x] found\n",
+ status, signature);
+ return 0;
+ }
+ printk(KERN_INFO "PCI: PCI BIOS revision %x.%02x entry at 0x%lx, last bus=%d\n",
+ major_ver, minor_ver, pcibios_entry, pcibios_last_bus);
+#ifdef CONFIG_PCI_DIRECT
+ if (!(hw_mech & PCIBIOS_HW_TYPE1))
+ pci_probe &= ~PCI_PROBE_CONF1;
+ if (!(hw_mech & PCIBIOS_HW_TYPE2))
+ pci_probe &= ~PCI_PROBE_CONF2;
+#endif
+ return 1;
+ }
+ return 0;
+}
+
+static int __devinit pci_bios_find_device (unsigned short vendor, unsigned short device_id,
+ unsigned short index, unsigned char *bus, unsigned char *device_fn)
+{
+ unsigned short bx;
+ unsigned short ret;
+
+ __asm__("lcall *(%%edi); cld\n\t"
+ "jc 1f\n\t"
+ "xor %%ah, %%ah\n"
+ "1:"
+ : "=b" (bx),
+ "=a" (ret)
+ : "1" (PCIBIOS_FIND_PCI_DEVICE),
+ "c" (device_id),
+ "d" (vendor),
+ "S" ((int) index),
+ "D" (&pci_indirect));
+ *bus = (bx >> 8) & 0xff;
+ *device_fn = bx & 0xff;
+ return (int) (ret & 0xff00) >> 8;
+}
+
+static int pci_bios_read(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 *value)
+{
+ unsigned long result = 0;
+ unsigned long flags;
+ unsigned long bx = (bus << 8) | devfn;
+
+ if (!value || (bus > 255) || (devfn > 255) || (reg > 255))
+ return -EINVAL;
+
+ spin_lock_irqsave(&pci_config_lock, flags);
+
+ switch (len) {
+ case 1:
+ __asm__("lcall *(%%esi); cld\n\t"
+ "jc 1f\n\t"
+ "xor %%ah, %%ah\n"
+ "1:"
+ : "=c" (*value),
+ "=a" (result)
+ : "1" (PCIBIOS_READ_CONFIG_BYTE),
+ "b" (bx),
+ "D" ((long)reg),
+ "S" (&pci_indirect));
+ break;
+ case 2:
+ __asm__("lcall *(%%esi); cld\n\t"
+ "jc 1f\n\t"
+ "xor %%ah, %%ah\n"
+ "1:"
+ : "=c" (*value),
+ "=a" (result)
+ : "1" (PCIBIOS_READ_CONFIG_WORD),
+ "b" (bx),
+ "D" ((long)reg),
+ "S" (&pci_indirect));
+ break;
+ case 4:
+ __asm__("lcall *(%%esi); cld\n\t"
+ "jc 1f\n\t"
+ "xor %%ah, %%ah\n"
+ "1:"
+ : "=c" (*value),
+ "=a" (result)
+ : "1" (PCIBIOS_READ_CONFIG_DWORD),
+ "b" (bx),
+ "D" ((long)reg),
+ "S" (&pci_indirect));
+ break;
+ }
+
+ spin_unlock_irqrestore(&pci_config_lock, flags);
+
+ return (int)((result & 0xff00) >> 8);
+}
+
+static int pci_bios_write(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 value)
+{
+ unsigned long result = 0;
+ unsigned long flags;
+ unsigned long bx = (bus << 8) | devfn;
+
+ if ((bus > 255) || (devfn > 255) || (reg > 255))
+ return -EINVAL;
+
+ spin_lock_irqsave(&pci_config_lock, flags);
+
+ switch (len) {
+ case 1:
+ __asm__("lcall *(%%esi); cld\n\t"
+ "jc 1f\n\t"
+ "xor %%ah, %%ah\n"
+ "1:"
+ : "=a" (result)
+ : "0" (PCIBIOS_WRITE_CONFIG_BYTE),
+ "c" (value),
+ "b" (bx),
+ "D" ((long)reg),
+ "S" (&pci_indirect));
+ break;
+ case 2:
+ __asm__("lcall *(%%esi); cld\n\t"
+ "jc 1f\n\t"
+ "xor %%ah, %%ah\n"
+ "1:"
+ : "=a" (result)
+ : "0" (PCIBIOS_WRITE_CONFIG_WORD),
+ "c" (value),
+ "b" (bx),
+ "D" ((long)reg),
+ "S" (&pci_indirect));
+ break;
+ case 4:
+ __asm__("lcall *(%%esi); cld\n\t"
+ "jc 1f\n\t"
+ "xor %%ah, %%ah\n"
+ "1:"
+ : "=a" (result)
+ : "0" (PCIBIOS_WRITE_CONFIG_DWORD),
+ "c" (value),
+ "b" (bx),
+ "D" ((long)reg),
+ "S" (&pci_indirect));
+ break;
+ }
+
+ spin_unlock_irqrestore(&pci_config_lock, flags);
+
+ return (int)((result & 0xff00) >> 8);
+}
+
+
+/*
+ * Function table for BIOS32 access
+ */
+
+static struct pci_raw_ops pci_bios_access = {
+ .read = pci_bios_read,
+ .write = pci_bios_write
+};
+
+/*
+ * Try to find PCI BIOS.
+ */
+
+static struct pci_raw_ops * __devinit pci_find_bios(void)
+{
+ union bios32 *check;
+ unsigned char sum;
+ int i, length;
+
+ /*
+ * Follow the standard procedure for locating the BIOS32 Service
+ * directory by scanning the permissible address range from
+ * 0xe0000 through 0xfffff for a valid BIOS32 structure.
+ */
+
+ for (check = (union bios32 *) __va(0xe0000);
+ check <= (union bios32 *) __va(0xffff0);
+ ++check) {
+ long sig;
+ if (probe_kernel_address(&check->fields.signature, sig))
+ continue;
+
+ if (check->fields.signature != BIOS32_SIGNATURE)
+ continue;
+ length = check->fields.length * 16;
+ if (!length)
+ continue;
+ sum = 0;
+ for (i = 0; i < length ; ++i)
+ sum += check->chars[i];
+ if (sum != 0)
+ continue;
+ if (check->fields.revision != 0) {
+ printk("PCI: unsupported BIOS32 revision %d at 0x%p\n",
+ check->fields.revision, check);
+ continue;
+ }
+ DBG("PCI: BIOS32 Service Directory structure at 0x%p\n", check);
+ if (check->fields.entry >= 0x100000) {
+ printk("PCI: BIOS32 entry (0x%p) in high memory, "
+ "cannot use.\n", check);
+ return NULL;
+ } else {
+ unsigned long bios32_entry = check->fields.entry;
+ DBG("PCI: BIOS32 Service Directory entry at 0x%lx\n",
+ bios32_entry);
+ bios32_indirect.address = bios32_entry + PAGE_OFFSET;
+ if (check_pcibios())
+ return &pci_bios_access;
+ }
+ break; /* Hopefully more than one BIOS32 cannot happen... */
+ }
+
+ return NULL;
+}
+
+/*
+ * Sort the device list according to PCI BIOS. Nasty hack, but since some
+ * fool forgot to define the `correct' device order in the PCI BIOS specs
+ * and we want to be (possibly bug-to-bug ;-]) compatible with older kernels
+ * which used BIOS ordering, we are bound to do this...
+ */
+
+void __devinit pcibios_sort(void)
+{
+ LIST_HEAD(sorted_devices);
+ struct list_head *ln;
+ struct pci_dev *dev, *d;
+ int idx, found;
+ unsigned char bus, devfn;
+
+ DBG("PCI: Sorting device list...\n");
+ while (!list_empty(&pci_devices)) {
+ ln = pci_devices.next;
+ dev = pci_dev_g(ln);
+ idx = found = 0;
+ while (pci_bios_find_device(dev->vendor, dev->device, idx, &bus, &devfn) == PCIBIOS_SUCCESSFUL) {
+ idx++;
+ list_for_each(ln, &pci_devices) {
+ d = pci_dev_g(ln);
+ if (d->bus->number == bus && d->devfn == devfn) {
+ list_move_tail(&d->global_list, &sorted_devices);
+ if (d == dev)
+ found = 1;
+ break;
+ }
+ }
+ if (ln == &pci_devices) {
+ printk(KERN_WARNING "PCI: BIOS reporting unknown device %02x:%02x\n", bus, devfn);
+ /*
+ * We must not continue scanning as several buggy BIOSes
+ * return garbage after the last device. Grr.
+ */
+ break;
+ }
+ }
+ if (!found) {
+ printk(KERN_WARNING "PCI: Device %s not found by BIOS\n",
+ pci_name(dev));
+ list_move_tail(&dev->global_list, &sorted_devices);
+ }
+ }
+ list_splice(&sorted_devices, &pci_devices);
+}
+
+/*
+ * BIOS Functions for IRQ Routing
+ */
+
+struct irq_routing_options {
+ u16 size;
+ struct irq_info *table;
+ u16 segment;
+} __attribute__((packed));
+
+struct irq_routing_table * pcibios_get_irq_routing_table(void)
+{
+ struct irq_routing_options opt;
+ struct irq_routing_table *rt = NULL;
+ int ret, map;
+ unsigned long page;
+
+ if (!pci_bios_present)
+ return NULL;
+ page = __get_free_page(GFP_KERNEL);
+ if (!page)
+ return NULL;
+ opt.table = (struct irq_info *) page;
+ opt.size = PAGE_SIZE;
+ opt.segment = __KERNEL_DS;
+
+ DBG("PCI: Fetching IRQ routing table... ");
+ __asm__("push %%es\n\t"
+ "push %%ds\n\t"
+ "pop %%es\n\t"
+ "lcall *(%%esi); cld\n\t"
+ "pop %%es\n\t"
+ "jc 1f\n\t"
+ "xor %%ah, %%ah\n"
+ "1:"
+ : "=a" (ret),
+ "=b" (map),
+ "=m" (opt)
+ : "0" (PCIBIOS_GET_ROUTING_OPTIONS),
+ "1" (0),
+ "D" ((long) &opt),
+ "S" (&pci_indirect),
+ "m" (opt)
+ : "memory");
+ DBG("OK ret=%d, size=%d, map=%x\n", ret, opt.size, map);
+ if (ret & 0xff00)
+ printk(KERN_ERR "PCI: Error %02x when fetching IRQ routing table.\n", (ret >> 8) & 0xff);
+ else if (opt.size) {
+ rt = kmalloc(sizeof(struct irq_routing_table) + opt.size, GFP_KERNEL);
+ if (rt) {
+ memset(rt, 0, sizeof(struct irq_routing_table));
+ rt->size = opt.size + sizeof(struct irq_routing_table);
+ rt->exclusive_irqs = map;
+ memcpy(rt->slots, (void *) page, opt.size);
+ printk(KERN_INFO "PCI: Using BIOS Interrupt Routing Table\n");
+ }
+ }
+ free_page(page);
+ return rt;
+}
+EXPORT_SYMBOL(pcibios_get_irq_routing_table);
+
+int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq)
+{
+ int ret;
+
+ __asm__("lcall *(%%esi); cld\n\t"
+ "jc 1f\n\t"
+ "xor %%ah, %%ah\n"
+ "1:"
+ : "=a" (ret)
+ : "0" (PCIBIOS_SET_PCI_HW_INT),
+ "b" ((dev->bus->number << 8) | dev->devfn),
+ "c" ((irq << 8) | (pin + 10)),
+ "S" (&pci_indirect));
+ return !(ret & 0xff00);
+}
+EXPORT_SYMBOL(pcibios_set_irq_routing);
+
+void __init pci_pcbios_init(void)
+{
+ if ((pci_probe & PCI_PROBE_BIOS)
+ && ((raw_pci_ops = pci_find_bios()))) {
+ pci_probe |= PCI_BIOS_SORT;
+ pci_bios_present = 1;
+ }
+}
+
--- /dev/null
+/*
+ * Low-Level PCI Access for i386 machines.
+ *
+ * (c) 1999 Martin Mares <mj@ucw.cz>
+ */
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(x...) printk(x)
+#else
+#define DBG(x...)
+#endif
+
+#define PCI_PROBE_BIOS 0x0001
+#define PCI_PROBE_CONF1 0x0002
+#define PCI_PROBE_CONF2 0x0004
+#define PCI_PROBE_MMCONF 0x0008
+#define PCI_PROBE_MASK 0x000f
+#define PCI_PROBE_NOEARLY 0x0010
+
+#define PCI_NO_SORT 0x0100
+#define PCI_BIOS_SORT 0x0200
+#define PCI_NO_CHECKS 0x0400
+#define PCI_USE_PIRQ_MASK 0x0800
+#define PCI_ASSIGN_ROMS 0x1000
+#define PCI_BIOS_IRQ_SCAN 0x2000
+#define PCI_ASSIGN_ALL_BUSSES 0x4000
+
+extern unsigned int pci_probe;
+extern unsigned long pirq_table_addr;
+
+enum pci_bf_sort_state {
+ pci_bf_sort_default,
+ pci_force_nobf,
+ pci_force_bf,
+ pci_dmi_bf,
+};
+
+/* pci-i386.c */
+
+extern unsigned int pcibios_max_latency;
+
+void pcibios_resource_survey(void);
+int pcibios_enable_resources(struct pci_dev *, int);
+
+/* pci-pc.c */
+
+extern int pcibios_last_bus;
+extern struct pci_bus *pci_root_bus;
+extern struct pci_ops pci_root_ops;
+
+/* pci-irq.c */
+
+struct irq_info {
+ u8 bus, devfn; /* Bus, device and function */
+ struct {
+ u8 link; /* IRQ line ID, chipset dependent, 0=not routed */
+ u16 bitmap; /* Available IRQs */
+ } __attribute__((packed)) irq[4];
+ u8 slot; /* Slot number, 0=onboard */
+ u8 rfu;
+} __attribute__((packed));
+
+struct irq_routing_table {
+ u32 signature; /* PIRQ_SIGNATURE should be here */
+ u16 version; /* PIRQ_VERSION */
+ u16 size; /* Table size in bytes */
+ u8 rtr_bus, rtr_devfn; /* Where the interrupt router lies */
+ u16 exclusive_irqs; /* IRQs devoted exclusively to PCI usage */
+ u16 rtr_vendor, rtr_device; /* Vendor and device ID of interrupt router */
+ u32 miniport_data; /* Crap */
+ u8 rfu[11];
+ u8 checksum; /* Modulo 256 checksum must give zero */
+ struct irq_info slots[0];
+} __attribute__((packed));
+
+extern unsigned int pcibios_irq_mask;
+
+extern int pcibios_scanned;
+extern spinlock_t pci_config_lock;
+
+extern int (*pcibios_enable_irq)(struct pci_dev *dev);
+extern void (*pcibios_disable_irq)(struct pci_dev *dev);
+
+extern int pci_conf1_write(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 value);
+extern int pci_conf1_read(unsigned int seg, unsigned int bus,
+ unsigned int devfn, int reg, int len, u32 *value);
+
+extern int pci_direct_probe(void);
+extern void pci_direct_init(int type);
+extern void pci_pcbios_init(void);
+extern void pci_mmcfg_init(int type);
+extern void pcibios_sort(void);
+
+/* pci-mmconfig.c */
+
+/* Verify the first 16 busses. We assume that systems with more busses
+ get MCFG right. */
+#define PCI_MMCFG_MAX_CHECK_BUS 16
+extern DECLARE_BITMAP(pci_mmcfg_fallback_slots, 32*PCI_MMCFG_MAX_CHECK_BUS);
+
+extern int __init pci_mmcfg_arch_reachable(unsigned int seg, unsigned int bus,
+ unsigned int devfn);
+extern int __init pci_mmcfg_arch_init(void);
+
+/*
+ * AMD Fam10h CPUs are buggy, and cannot access MMIO config space
+ * on their northbrige except through the * %eax register. As such, you MUST
+ * NOT use normal IOMEM accesses, you need to only use the magic mmio-config
+ * accessor functions.
+ * In fact just use pci_config_*, nothing else please.
+ */
+static inline unsigned char mmio_config_readb(void __iomem *pos)
+{
+ u8 val;
+ asm volatile("movb (%1),%%al" : "=a" (val) : "r" (pos));
+ return val;
+}
+
+static inline unsigned short mmio_config_readw(void __iomem *pos)
+{
+ u16 val;
+ asm volatile("movw (%1),%%ax" : "=a" (val) : "r" (pos));
+ return val;
+}
+
+static inline unsigned int mmio_config_readl(void __iomem *pos)
+{
+ u32 val;
+ asm volatile("movl (%1),%%eax" : "=a" (val) : "r" (pos));
+ return val;
+}
+
+static inline void mmio_config_writeb(void __iomem *pos, u8 val)
+{
+ asm volatile("movb %%al,(%1)" :: "a" (val), "r" (pos) : "memory");
+}
+
+static inline void mmio_config_writew(void __iomem *pos, u16 val)
+{
+ asm volatile("movw %%ax,(%1)" :: "a" (val), "r" (pos) : "memory");
+}
+
+static inline void mmio_config_writel(void __iomem *pos, u32 val)
+{
+ asm volatile("movl %%eax,(%1)" :: "a" (val), "r" (pos) : "memory");
+}
--- /dev/null
+/*
+ * Low-Level PCI Support for SGI Visual Workstation
+ *
+ * (c) 1999--2000 Martin Mares <mj@ucw.cz>
+ */
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+
+#include "cobalt.h"
+#include "lithium.h"
+
+#include "pci.h"
+
+
+extern struct pci_raw_ops pci_direct_conf1;
+
+static int pci_visws_enable_irq(struct pci_dev *dev) { return 0; }
+static void pci_visws_disable_irq(struct pci_dev *dev) { }
+
+int (*pcibios_enable_irq)(struct pci_dev *dev) = &pci_visws_enable_irq;
+void (*pcibios_disable_irq)(struct pci_dev *dev) = &pci_visws_disable_irq;
+
+void __init pcibios_penalize_isa_irq(int irq, int active) {}
+
+
+unsigned int pci_bus0, pci_bus1;
+
+static inline u8 bridge_swizzle(u8 pin, u8 slot)
+{
+ return (((pin - 1) + slot) % 4) + 1;
+}
+
+static u8 __init visws_swizzle(struct pci_dev *dev, u8 *pinp)
+{
+ u8 pin = *pinp;
+
+ while (dev->bus->self) { /* Move up the chain of bridges. */
+ pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn));
+ dev = dev->bus->self;
+ }
+ *pinp = pin;
+
+ return PCI_SLOT(dev->devfn);
+}
+
+static int __init visws_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+ int irq, bus = dev->bus->number;
+
+ pin--;
+
+ /* Nothing useful at PIIX4 pin 1 */
+ if (bus == pci_bus0 && slot == 4 && pin == 0)
+ return -1;
+
+ /* PIIX4 USB is on Bus 0, Slot 4, Line 3 */
+ if (bus == pci_bus0 && slot == 4 && pin == 3) {
+ irq = CO_IRQ(CO_APIC_PIIX4_USB);
+ goto out;
+ }
+
+ /* First pin spread down 1 APIC entry per slot */
+ if (pin == 0) {
+ irq = CO_IRQ((bus == pci_bus0 ? CO_APIC_PCIB_BASE0 :
+ CO_APIC_PCIA_BASE0) + slot);
+ goto out;
+ }
+
+ /* lines 1,2,3 from any slot is shared in this twirly pattern */
+ if (bus == pci_bus1) {
+ /* lines 1-3 from devices 0 1 rotate over 2 apic entries */
+ irq = CO_IRQ(CO_APIC_PCIA_BASE123 + ((slot + (pin - 1)) % 2));
+ } else { /* bus == pci_bus0 */
+ /* lines 1-3 from devices 0-3 rotate over 3 apic entries */
+ if (slot == 0)
+ slot = 3; /* same pattern */
+ irq = CO_IRQ(CO_APIC_PCIA_BASE123 + ((3 - slot) + (pin - 1) % 3));
+ }
+out:
+ printk(KERN_DEBUG "PCI: Bus %d Slot %d Line %d -> IRQ %d\n", bus, slot, pin, irq);
+ return irq;
+}
+
+void __init pcibios_update_irq(struct pci_dev *dev, int irq)
+{
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
+}
+
+static int __init pcibios_init(void)
+{
+ /* The VISWS supports configuration access type 1 only */
+ pci_probe = (pci_probe | PCI_PROBE_CONF1) &
+ ~(PCI_PROBE_BIOS | PCI_PROBE_CONF2);
+
+ pci_bus0 = li_pcib_read16(LI_PCI_BUSNUM) & 0xff;
+ pci_bus1 = li_pcia_read16(LI_PCI_BUSNUM) & 0xff;
+
+ printk(KERN_INFO "PCI: Lithium bridge A bus: %u, "
+ "bridge B (PIIX4) bus: %u\n", pci_bus1, pci_bus0);
+
+ raw_pci_ops = &pci_direct_conf1;
+ pci_scan_bus_with_sysdata(pci_bus0);
+ pci_scan_bus_with_sysdata(pci_bus1);
+ pci_fixup_irqs(visws_swizzle, visws_map_irq);
+ pcibios_resource_survey();
+ return 0;
+}
+
+subsys_initcall(pcibios_init);
ifeq ($(CONFIG_X86_32),y)
-include ${srctree}/arch/i386/pci/Makefile_32
+include ${srctree}/arch/x86/pci/Makefile_32
else
include ${srctree}/arch/x86_64/pci/Makefile_64
endif
#
# Reuse the i386 PCI subsystem
#
-EXTRA_CFLAGS += -Iarch/i386/pci
+EXTRA_CFLAGS += -Iarch/x86/pci
obj-y := i386.o
obj-$(CONFIG_PCI_DIRECT)+= direct.o
obj-$(CONFIG_NUMA) += k8-bus_64.o
-direct-y += ../../i386/pci/direct.o
-acpi-y += ../../i386/pci/acpi.o
-legacy-y += ../../i386/pci/legacy.o
-irq-y += ../../i386/pci/irq.o
-common-y += ../../i386/pci/common.o
-fixup-y += ../../i386/pci/fixup.o
-i386-y += ../../i386/pci/i386.o
-init-y += ../../i386/pci/init.o
-early-y += ../../i386/pci/early.o
-mmconfig-shared-y += ../../i386/pci/mmconfig-shared.o
+direct-y += ../../x86/pci/direct.o
+acpi-y += ../../x86/pci/acpi.o
+legacy-y += ../../x86/pci/legacy.o
+irq-y += ../../x86/pci/irq.o
+common-y += ../../x86/pci/common.o
+fixup-y += ../../x86/pci/fixup.o
+i386-y += ../../x86/pci/i386.o
+init-y += ../../x86/pci/init.o
+early-y += ../../x86/pci/early.o
+mmconfig-shared-y += ../../x86/pci/mmconfig-shared.o
#include "cpqphp.h"
#include "cpqphp_nvram.h"
-#include "../../../arch/i386/pci/pci.h" /* horrible hack showing how processor dependent we are... */
+#include "../../../arch/x86/pci/pci.h" /* horrible hack showing how processor dependent we are... */
/* Global variables */
#include "../pci.h"
#include "cpqphp.h"
#include "cpqphp_nvram.h"
-#include "../../../arch/i386/pci/pci.h" /* horrible hack showing how processor dependent we are... */
+#include "../../../arch/x86/pci/pci.h" /* horrible hack showing how processor dependent we are... */
u8 cpqhp_nic_irq;
#include <linux/delay.h>
#include <linux/wait.h>
#include "../pci.h"
-#include "../../../arch/i386/pci/pci.h" /* for struct irq_routing_table */
+#include "../../../arch/x86/pci/pci.h" /* for struct irq_routing_table */
#include "ibmphp.h"
#define attn_on(sl) ibmphp_hpc_writeslot (sl, HPC_SLOT_ATTNON)
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff