arch/x86/pci/common.c - maze/linux - Git at Google

 /*
  *	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;
 struct pci_raw_ops *raw_pci_ext_ops;

 int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn,
 						int reg, int len, u32 *val)
 {
 	if (reg < 256 && raw_pci_ops)
 		return raw_pci_ops->read(domain, bus, devfn, reg, len, val);
 	if (raw_pci_ext_ops)
 		return raw_pci_ext_ops->read(domain, bus, devfn, reg, len, val);
 	return -EINVAL;
 }

 int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn,
 						int reg, int len, u32 val)
 {
 	if (reg < 256 && raw_pci_ops)
 		return raw_pci_ops->write(domain, bus, devfn, reg, len, val);
 	if (raw_pci_ext_ops)
 		return raw_pci_ext_ops->write(domain, bus, devfn, reg, len, val);
 	return -EINVAL;
 }

 static int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
 {
 	return raw_pci_read(pci_domain_nr(bus), 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_write(pci_domain_nr(bus), 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);

 static int __devinit can_skip_ioresource_align(const struct dmi_system_id *d)
 {
 	pci_probe |= PCI_CAN_SKIP_ISA_ALIGN;
 	printk(KERN_INFO "PCI: %s detected, can skip ISA alignment\n", d->ident);
 	return 0;
 }

 static struct dmi_system_id can_skip_pciprobe_dmi_table[] __devinitdata = {
 /*
  * Systems where PCI IO resource ISA alignment can be skipped
  * when the ISA enable bit in the bridge control is not set
  */
 	{
 		.callback = can_skip_ioresource_align,
 		.ident = "IBM System x3800",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "x3800"),
 		},
 	},
 	{
 		.callback = can_skip_ioresource_align,
 		.ident = "IBM System x3850",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "x3850"),
 		},
 	},
 	{
 		.callback = can_skip_ioresource_align,
 		.ident = "IBM System x3950",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "x3950"),
 		},
 	},
 	{}
 };

 void __init dmi_check_skip_isa_align(void)
 {
 	dmi_check_system(can_skip_pciprobe_dmi_table);
 }

 /*
  *  Called after each bus is probed, but before its children
  *  are examined.
  */

 void __devinit  pcibios_fixup_bus(struct pci_bus *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(const 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(const 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"),
 		},
 	},
 	{
 		.callback = set_bf_sort,
 		.ident = "HP ProLiant DL360",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "HP"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL360"),
 		},
 	},
 	{
 		.callback = set_bf_sort,
 		.ident = "HP ProLiant DL380",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "HP"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL380"),
 		},
 	},
 #ifdef __i386__
 	{
 		.callback = assign_all_busses,
 		.ident = "Compaq EVO N800c",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "EVO N800c"),
 		},
 	},
 #endif
 	{
 		.callback = set_bf_sort,
 		.ident = "HP ProLiant DL385 G2",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "HP"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL385 G2"),
 		},
 	},
 	{
 		.callback = set_bf_sort,
 		.ident = "HP ProLiant DL585 G2",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "HP"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL585 G2"),
 		},
 	},
 	{}
 };

 void __init dmi_check_pciprobe(void)
 {
 	dmi_check_system(pciprobe_dmi_table);
 }

 struct pci_bus * __devinit pcibios_scan_root(int busnum)
 {
 	struct pci_bus *bus = NULL;
 	struct pci_sysdata *sd;

 	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;
 	}

 	sd->node = get_mp_bus_to_node(busnum);

 	printk(KERN_DEBUG "PCI: Probing PCI hardware (bus %02x)\n", busnum);
 	bus = pci_scan_bus_parented(NULL, busnum, &pci_root_ops, sd);
 	if (!bus)
 		kfree(sd);

 	return bus;
 }

 extern u8 pci_cache_line_size;

 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();
 	return 0;
 }

 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, "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;
 	}
 	else if (!strcmp(str, "check_enable_amd_mmconf")) {
 		pci_probe |= PCI_CHECK_ENABLE_AMD_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, "use_crs")) {
 		pci_probe |= PCI_USE__CRS;
 		return NULL;
 	} else if (!strcmp(str, "routeirq")) {
 		pci_routeirq = 1;
 		return NULL;
 	} else if (!strcmp(str, "skip_isa_align")) {
 		pci_probe |= PCI_CAN_SKIP_ISA_ALIGN;
 		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 = pci_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 * __devinit pci_scan_bus_on_node(int busno, struct pci_ops *ops, int node)
 {
 	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 = node;
 	bus = pci_scan_bus(busno, ops, sd);
 	if (!bus)
 		kfree(sd);

 	return bus;
 }

 struct pci_bus * __devinit pci_scan_bus_with_sysdata(int busno)
 {
 	return pci_scan_bus_on_node(busno, &pci_root_ops, -1);
 }
	/*
	* 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;
	struct pci_raw_ops *raw_pci_ext_ops;

	int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn,
	int reg, int len, u32 *val)
	{
	if (reg < 256 && raw_pci_ops)
	return raw_pci_ops->read(domain, bus, devfn, reg, len, val);
	if (raw_pci_ext_ops)
	return raw_pci_ext_ops->read(domain, bus, devfn, reg, len, val);
	return -EINVAL;
	}

	int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn,
	int reg, int len, u32 val)
	{
	if (reg < 256 && raw_pci_ops)
	return raw_pci_ops->write(domain, bus, devfn, reg, len, val);
	if (raw_pci_ext_ops)
	return raw_pci_ext_ops->write(domain, bus, devfn, reg, len, val);
	return -EINVAL;
	}

	static int pci_read(struct pci_bus bus, unsigned int devfn, int where, int size, u32 value)
	{
	return raw_pci_read(pci_domain_nr(bus), 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_write(pci_domain_nr(bus), 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);

	static int __devinit can_skip_ioresource_align(const struct dmi_system_id *d)
	{
	pci_probe \|= PCI_CAN_SKIP_ISA_ALIGN;
	printk(KERN_INFO "PCI: %s detected, can skip ISA alignment\n", d->ident);
	return 0;
	}

	static struct dmi_system_id can_skip_pciprobe_dmi_table[] __devinitdata = {
	/*
	* Systems where PCI IO resource ISA alignment can be skipped
	* when the ISA enable bit in the bridge control is not set
	*/
	{
	.callback = can_skip_ioresource_align,
	.ident = "IBM System x3800",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
	DMI_MATCH(DMI_PRODUCT_NAME, "x3800"),
	},
	},
	{
	.callback = can_skip_ioresource_align,
	.ident = "IBM System x3850",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
	DMI_MATCH(DMI_PRODUCT_NAME, "x3850"),
	},
	},
	{
	.callback = can_skip_ioresource_align,
	.ident = "IBM System x3950",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
	DMI_MATCH(DMI_PRODUCT_NAME, "x3950"),
	},
	},
	{}
	};

	void __init dmi_check_skip_isa_align(void)
	{
	dmi_check_system(can_skip_pciprobe_dmi_table);
	}

	/*
	* Called after each bus is probed, but before its children
	* are examined.
	*/

	void __devinit pcibios_fixup_bus(struct pci_bus *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(const 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(const 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"),
	},
	},
	{
	.callback = set_bf_sort,
	.ident = "HP ProLiant DL360",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "HP"),
	DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL360"),
	},
	},
	{
	.callback = set_bf_sort,
	.ident = "HP ProLiant DL380",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "HP"),
	DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL380"),
	},
	},
	#ifdef __i386__
	{
	.callback = assign_all_busses,
	.ident = "Compaq EVO N800c",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
	DMI_MATCH(DMI_PRODUCT_NAME, "EVO N800c"),
	},
	},
	#endif
	{
	.callback = set_bf_sort,
	.ident = "HP ProLiant DL385 G2",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "HP"),
	DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL385 G2"),
	},
	},
	{
	.callback = set_bf_sort,
	.ident = "HP ProLiant DL585 G2",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "HP"),
	DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL585 G2"),
	},
	},
	{}
	};

	void __init dmi_check_pciprobe(void)
	{
	dmi_check_system(pciprobe_dmi_table);
	}

	struct pci_bus * __devinit pcibios_scan_root(int busnum)
	{
	struct pci_bus *bus = NULL;
	struct pci_sysdata *sd;

	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;
	}

	sd->node = get_mp_bus_to_node(busnum);

	printk(KERN_DEBUG "PCI: Probing PCI hardware (bus %02x)\n", busnum);
	bus = pci_scan_bus_parented(NULL, busnum, &pci_root_ops, sd);
	if (!bus)
	kfree(sd);

	return bus;
	}

	extern u8 pci_cache_line_size;

	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();
	return 0;
	}

	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, "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;
	}
	else if (!strcmp(str, "check_enable_amd_mmconf")) {
	pci_probe \|= PCI_CHECK_ENABLE_AMD_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, "use_crs")) {
	pci_probe \|= PCI_USE__CRS;
	return NULL;
	} else if (!strcmp(str, "routeirq")) {
	pci_routeirq = 1;
	return NULL;
	} else if (!strcmp(str, "skip_isa_align")) {
	pci_probe \|= PCI_CAN_SKIP_ISA_ALIGN;
	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 = pci_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 * __devinit pci_scan_bus_on_node(int busno, struct pci_ops *ops, int node)
	{
	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 = node;
	bus = pci_scan_bus(busno, ops, sd);
	if (!bus)
	kfree(sd);

	return bus;
	}

	struct pci_bus * __devinit pci_scan_bus_with_sysdata(int busno)
	{
	return pci_scan_bus_on_node(busno, &pci_root_ops, -1);
	}