Release 4.14 arch/x86/pci/common.c

/*
 *      Low-Level PCI Support for PC
 *
 *      (c) 1999--2000 Martin Mares <mj@ucw.cz>
 */

#include <linux/sched.h>
#include <linux/pci.h>
#include <linux/pci-acpi.h>
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/dmi.h>
#include <linux/slab.h>

#include <asm/acpi.h>
#include <asm/segment.h>
#include <asm/io.h>
#include <asm/smp.h>
#include <asm/pci_x86.h>
#include <asm/setup.h>


unsigned int pci_probe = PCI_PROBE_BIOS | PCI_PROBE_CONF1 | PCI_PROBE_CONF2 |
				PCI_PROBE_MMCONF;


unsigned int pci_early_dump_regs;

static int pci_bf_sort;

int pci_routeirq;

int noioapicquirk;
#ifdef CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS

int noioapicreroute = 0;
#else

int noioapicreroute = 1;
#endif

int pcibios_last_bus = -1;

unsigned long pirq_table_addr;

const struct pci_raw_ops *__read_mostly raw_pci_ops;

const struct pci_raw_ops *__read_mostly raw_pci_ext_ops;



int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn,
						int reg, int len, u32 *val)
{
	if (domain == 0 && 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;
}

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int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn,
						int reg, int len, u32 val)
{
	if (domain == 0 && 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;
}

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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);
}

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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);
}

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struct pci_ops pci_root_ops = {
	.read = pci_read,
	.write = pci_write,
};

/*
 * This interrupt-safe spinlock protects all accesses to PCI configuration
 * space, except for the mmconfig (ECAM) based operations.
 */

DEFINE_RAW_SPINLOCK(pci_config_lock);



static int __init 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;
}

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static const struct dmi_system_id can_skip_pciprobe_dmi_table[] __initconst = {
/*
 * 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);
}

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static void pcibios_fixup_device_resources(struct pci_dev *dev)
{
	struct resource *rom_r = &dev->resource[PCI_ROM_RESOURCE];
	struct resource *bar_r;
	int bar;

	if (pci_probe & PCI_NOASSIGN_BARS) {
		/*
                * If the BIOS did not assign the BAR, zero out the
                * resource so the kernel doesn't attempt to assign
                * it later on in pci_assign_unassigned_resources
                */
		for (bar = 0; bar <= PCI_STD_RESOURCE_END; bar++) {
			bar_r = &dev->resource[bar];
			if (bar_r->start == 0 && bar_r->end != 0) {
				bar_r->flags = 0;
				bar_r->end = 0;
			}
		}
	}

	if (pci_probe & PCI_NOASSIGN_ROMS) {
		if (rom_r->parent)
			return;
		if (rom_r->start) {
			/* we deal with BIOS assigned ROM later */
			return;
		}
		rom_r->start = rom_r->end = rom_r->flags = 0;
	}
}

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



void pcibios_fixup_bus(struct pci_bus *b)
{
	struct pci_dev *dev;

	pci_read_bridge_bases(b);
	list_for_each_entry(dev, &b->devices, bus_list)
		pcibios_fixup_device_resources(dev);
}

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void pcibios_add_bus(struct pci_bus *bus)
{
	acpi_pci_add_bus(bus);
}

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void pcibios_remove_bus(struct pci_bus *bus)
{
	acpi_pci_remove_bus(bus);
}

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/*
 * Only use DMI information to set this if nothing was passed
 * on the kernel command line (which was parsed earlier).
 */



static int __init 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;
}

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static void __init read_dmi_type_b1(const struct dmi_header *dm,
				    void *private_data)
{
	u8 *data = (u8 *)dm + 4;

	if (dm->type != 0xB1)
		return;
	if ((((*(u32 *)data) >> 9) & 0x03) == 0x01)
		set_bf_sort((const struct dmi_system_id *)private_data);
}

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static int __init find_sort_method(const struct dmi_system_id *d)
{
	dmi_walk(read_dmi_type_b1, (void *)d);
	return 0;
}

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/*
 * Enable renumbering of PCI bus# ranges to reach all PCI busses (Cardbus)
 */
#ifdef __i386__


static int __init 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;
}
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#endif



static int __init set_scan_all(const struct dmi_system_id *d)
{
	printk(KERN_INFO "PCI: %s detected, enabling pci=pcie_scan_all\n",
	       d->ident);
	pci_add_flags(PCI_SCAN_ALL_PCIE_DEVS);
	return 0;
}

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static const struct dmi_system_id pciprobe_dmi_table[] __initconst = {
#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 = find_sort_method,
		.ident = "Dell System",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc"),
                },
        },
	{
		.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"),
                },
        },
	{
		.callback = set_scan_all,
		.ident = "Stratus/NEC ftServer",
		.matches = {
			DMI_MATCH(DMI_SYS_VENDOR, "Stratus"),
			DMI_MATCH(DMI_PRODUCT_NAME, "ftServer"),
                },
        },
        {
                .callback = set_scan_all,
                .ident = "Stratus/NEC ftServer",
                .matches = {
                        DMI_MATCH(DMI_SYS_VENDOR, "NEC"),
                        DMI_MATCH(DMI_PRODUCT_NAME, "Express5800/R32"),
                },
        },
        {
                .callback = set_scan_all,
                .ident = "Stratus/NEC ftServer",
                .matches = {
                        DMI_MATCH(DMI_SYS_VENDOR, "NEC"),
                        DMI_MATCH(DMI_PRODUCT_NAME, "Express5800/R31"),
                },
        },
	{}
};



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

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void pcibios_scan_root(int busnum)
{
	struct pci_bus *bus;
	struct pci_sysdata *sd;
	LIST_HEAD(resources);

	sd = kzalloc(sizeof(*sd), GFP_KERNEL);
	if (!sd) {
		printk(KERN_ERR "PCI: OOM, skipping PCI bus %02x\n", busnum);
		return;
	}
	sd->node = x86_pci_root_bus_node(busnum);
	x86_pci_root_bus_resources(busnum, &resources);
	printk(KERN_DEBUG "PCI: Probing PCI hardware (bus %02x)\n", busnum);
	bus = pci_scan_root_bus(NULL, busnum, &pci_root_ops, sd, &resources);
	if (!bus) {
		pci_free_resource_list(&resources);
		kfree(sd);
		return;
	}
	pci_bus_add_devices(bus);
}

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void __init pcibios_set_cache_line_size(void)
{
	struct cpuinfo_x86 *c = &boot_cpu_data;

	/*
         * Set PCI cacheline size to that of the CPU if the CPU has reported it.
         * (For older CPUs that don't support cpuid, we se it to 32 bytes
         * It's also good for 386/486s (which actually have 16)
         * as quite a few PCI devices do not support smaller values.
         */
	if (c->x86_clflush_size > 0) {
		pci_dfl_cache_line_size = c->x86_clflush_size >> 2;
		printk(KERN_DEBUG "PCI: pci_cache_line_size set to %d bytes\n",
			pci_dfl_cache_line_size << 2);
	} else {
 		pci_dfl_cache_line_size = 32 >> 2;
		printk(KERN_DEBUG "PCI: Unknown cacheline size. Setting to 32 bytes\n");
	}
}

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int __init pcibios_init(void)
{
	if (!raw_pci_ops && !raw_pci_ext_ops) {
		printk(KERN_WARNING "PCI: System does not support PCI\n");
		return 0;
	}

	pcibios_set_cache_line_size();
	pcibios_resource_survey();

	if (pci_bf_sort >= pci_force_bf)
		pci_sort_breadthfirst();
	return 0;
}

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char *__init 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;
	}
	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;
	} else if (!strcmp(str, "rom")) {
		pci_probe |= PCI_ASSIGN_ROMS;
		return NULL;
	} else if (!strcmp(str, "norom")) {
		pci_probe |= PCI_NOASSIGN_ROMS;
		return NULL;
	} else if (!strcmp(str, "nobar")) {
		pci_probe |= PCI_NOASSIGN_BARS;
		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, "nocrs")) {
		pci_probe |= PCI_ROOT_NO_CRS;
		return NULL;
	} else if (!strcmp(str, "earlydump")) {
		pci_early_dump_regs = 1;
		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;
	} else if (!strcmp(str, "noioapicquirk")) {
		noioapicquirk = 1;
		return NULL;
	} else if (!strcmp(str, "ioapicreroute")) {
		if (noioapicreroute != -1)
			noioapicreroute = 0;
		return NULL;
	} else if (!strcmp(str, "noioapicreroute")) {
		if (noioapicreroute != -1)
			noioapicreroute = 1;
		return NULL;
	}
	return str;
}

Contributors
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Tokens
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Linus Torvalds (pre-git)
213
33.28%
12
35.29%
Stefan Assmann
74
11.56%
3
8.82%
Yinghai Lu
60
9.38%
3
8.82%
Andrew Morton
57
8.91%
2
5.88%
Matt Domsch
40
6.25%
1
2.94%
Gary Hade
38
5.94%
2
5.88%
Jaya Kumar
31
4.84%
1
2.94%
Len Brown
28
4.38%
2
5.88%
Björn Helgaas
20
3.12%
1
2.94%
Andi Kleen
20
3.12%
1
2.94%
Mike Habeck
20
3.12%
1
2.94%
Andy Grover
17
2.66%
1
2.94%
John Clemens
13
2.03%
1
2.94%
Linus Torvalds
8
1.25%
2
5.88%
Myron Stowe
1
0.16%
1
2.94%
Total
640
100.00%
34
100.00%



unsigned int pcibios_assign_all_busses(void)
{
	return (pci_probe & PCI_ASSIGN_ALL_BUSSES) ? 1 : 0;
}

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Linus Torvalds
19
100.00%
1
100.00%
Total
19
100.00%
1
100.00%

#if defined(CONFIG_X86_DEV_DMA_OPS) && defined(CONFIG_PCI_DOMAINS)
static LIST_HEAD(dma_domain_list);
static DEFINE_SPINLOCK(dma_domain_list_lock);



void add_dma_domain(struct dma_domain *domain)
{
	spin_lock(&dma_domain_list_lock);
	list_add(&domain->node, &dma_domain_list);
	spin_unlock(&dma_domain_list_lock);
}
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Keith Busch
33
100.00%
1
100.00%
Total
33
100.00%
1
100.00%


EXPORT_SYMBOL_GPL(add_dma_domain);



void del_dma_domain(struct dma_domain *domain)
{
	spin_lock(&dma_domain_list_lock);
	list_del(&domain->node);
	spin_unlock(&dma_domain_list_lock);
}
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Keith Busch
30
100.00%
1
100.00%
Total
30
100.00%
1
100.00%


EXPORT_SYMBOL_GPL(del_dma_domain);



static void set_dma_domain_ops(struct pci_dev *pdev)
{
	struct dma_domain *domain;

	spin_lock(&dma_domain_list_lock);
	list_for_each_entry(domain, &dma_domain_list, node) {
		if (pci_domain_nr(pdev->bus) == domain->domain_nr) {
			pdev->dev.dma_ops = domain->dma_ops;
			break;
		}
	}
	spin_unlock(&dma_domain_list_lock);
}
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Keith Busch
64
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1
100.00%
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64
100.00%
1
100.00%

#else


static void set_dma_domain_ops(struct pci_dev *pdev) {}
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Keith Busch
10
100.00%
1
100.00%
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10
100.00%
1
100.00%

#endif



static void set_dev_domain_options(struct pci_dev *pdev)
{
	if (is_vmd(pdev->bus))
		pdev->hotplug_user_indicators = 1;
}

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Keith Busch
26
100.00%
1
100.00%
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26
100.00%
1
100.00%



int pcibios_add_device(struct pci_dev *dev)
{
	struct setup_data *data;
	struct pci_setup_rom *rom;
	u64 pa_data;

	pa_data = boot_params.hdr.setup_data;
	while (pa_data) {
		data = memremap(pa_data, sizeof(*rom), MEMREMAP_WB);
		if (!data)
			return -ENOMEM;

		if (data->type == SETUP_PCI) {
			rom = (struct pci_setup_rom *)data;

			if ((pci_domain_nr(dev->bus) == rom->segment) &&
			    (dev->bus->number == rom->bus) &&
			    (PCI_SLOT(dev->devfn) == rom->device) &&
			    (PCI_FUNC(dev->devfn) == rom->function) &&
			    (dev->vendor == rom->vendor) &&
			    (dev->device == rom->devid)) {
				dev->rom = pa_data +
				      offsetof(struct pci_setup_rom, romdata);
				dev->romlen = rom->pcilen;
			}
		}
		pa_data = data->next;
		memunmap(data);
	}
	set_dma_domain_ops(dev);
	set_dev_domain_options(dev);
	return 0;
}

Contributors
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Tokens
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Commits
CommitProp
Matthew Garrett
168
83.58%
1
20.00%
Matt Fleming
19
9.45%
1
20.00%
Keith Busch
10
4.98%
2
40.00%
Tom Lendacky
4
1.99%
1
20.00%
Total
201
100.00%
5
100.00%



int pcibios_enable_device(struct pci_dev *dev, int mask)
{
	int err;

	if ((err = pci_enable_resources(dev, mask)) < 0)
		return err;

	if (!pci_dev_msi_enabled(dev))
		return pcibios_enable_irq(dev);
	return 0;
}

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Björn Helgaas
36
70.59%
1
20.00%
Linus Torvalds (pre-git)
14
27.45%
3
60.00%
Andy Grover
1
1.96%
1
20.00%
Total
51
100.00%
5
100.00%



void pcibios_disable_device (struct pci_dev *dev)
{
	if (!pci_dev_msi_enabled(dev) && pcibios_disable_irq)
		pcibios_disable_irq(dev);
}

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Rafael J. Wysocki
18
72.00%
1
50.00%
Björn Helgaas
7
28.00%
1
50.00%
Total
25
100.00%
2
100.00%

#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC


void pcibios_release_device(struct pci_dev *dev)
{
	if (atomic_dec_return(&dev->enable_cnt) >= 0)
		pcibios_disable_device(dev);

}
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Rui Y Wang
27
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1
100.00%
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27
100.00%
1
100.00%

#endif



int pci_ext_cfg_avail(void)
{
	if (raw_pci_ext_ops)
		return 1;
	else
		return 0;
}
Contributors
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Andrew Patterson
17
94.44%
1
50.00%
Taku Izumi
1
5.56%
1
50.00%
Total
18
100.00%
2
100.00%

Overall Contributors
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Andy Gospodarek
340
10.69%
1
0.95%
Linus Torvalds (pre-git)
278
8.74%
23
21.90%
Matthew Wilcox
270
8.49%
3
2.86%
Matt Domsch
228
7.17%
2
1.90%
Yinghai Lu
225
7.08%
6
5.71%
Björn Helgaas
222
6.98%
8
7.62%
Keith Busch
210
6.60%
2
1.90%
Matthew Garrett
171
5.38%
1
0.95%
Gary Hade
119
3.74%
2
1.90%
Narendra K
118
3.71%
2
1.90%
Michal Schmidt
116
3.65%
2
1.90%
Stefan Assmann
94
2.96%
3
2.86%
Mike Habeck
89
2.80%
1
0.95%
Bernhard Kaindl
85
2.67%
1
0.95%
Charlotte Richardson
62
1.95%
1
0.95%
Andrew Morton
60
1.89%
2
1.90%
Linus Torvalds
36
1.13%
4
3.81%
Juha Laiho
36
1.13%
1
0.95%
Jaya Kumar
35
1.10%
1
0.95%
Len Brown
33
1.04%
2
1.90%
Jiang Liu
33
1.04%
1
0.95%
Rui Y Wang
32
1.01%
1
0.95%
Alex Nixon
29
0.91%
1
0.95%
Andy Grover
29
0.91%
2
1.90%
Dave Jones
29
0.91%
1
0.95%
Ivan Kokshaysky
21
0.66%
1
0.95%
Andi Kleen
20
0.63%
1
0.95%
Jean Delvare
19
0.60%
1
0.95%
Matt Fleming
19
0.60%
1
0.95%
Rafael J. Wysocki
18
0.57%
1
0.95%
Andrew Patterson
17
0.53%
1
0.95%
John Clemens
13
0.41%
1
0.95%
Jeff Garzik
10
0.31%
2
1.90%
Mathias Krause
8
0.25%
1
0.95%
Myron Stowe
8
0.25%
2
1.90%
Jan Beulich
6
0.19%
2
1.90%
Yijing Wang
6
0.19%
1
0.95%
Jesse Barnes
6
0.19%
2
1.90%
Thomas Gleixner
5
0.16%
3
2.86%
Tony Camuso
4
0.13%
1
0.95%
Tom Lendacky
4
0.13%
1
0.95%
Adrian-Ken Rueegsegger
3
0.09%
1
0.95%
Martin J. Bligh
3
0.09%
1
0.95%
Patrick Mochel
3
0.09%
1
0.95%
Tom Rini
3
0.09%
1
0.95%
Tejun Heo
1
0.03%
1
0.95%
Taku Izumi
1
0.03%
1
0.95%
Adrian Bunk
1
0.03%
1
0.95%
Andrea Gelmini
1
0.03%
1
0.95%
Jaswinder Singh Rajput
1
0.03%
1
0.95%
Total
3180
100.00%
105
100.00%
Directory: arch/x86/pci

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