diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:16:36 +0200 |
---|---|---|
committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:16:36 +0200 |
commit | fb9aa6f1d4a1e11e66a680460b2c2b2b10b62f79 (patch) | |
tree | e0ad51f39b48a342244cef62099bd1a8a93927db /arch/i386 | |
parent | 4b60eb8380a0b588a03b6052d7ac93e1964c75b8 (diff) |
i386: move pci
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/i386')
-rw-r--r-- | arch/i386/Makefile | 2 | ||||
-rw-r--r-- | arch/i386/pci/Makefile | 5 | ||||
-rw-r--r-- | arch/i386/pci/Makefile_32 | 14 | ||||
-rw-r--r-- | arch/i386/pci/acpi.c | 90 | ||||
-rw-r--r-- | arch/i386/pci/common.c | 480 | ||||
-rw-r--r-- | arch/i386/pci/direct.c | 302 | ||||
-rw-r--r-- | arch/i386/pci/early.c | 59 | ||||
-rw-r--r-- | arch/i386/pci/fixup.c | 446 | ||||
-rw-r--r-- | arch/i386/pci/i386.c | 315 | ||||
-rw-r--r-- | arch/i386/pci/init.c | 37 | ||||
-rw-r--r-- | arch/i386/pci/irq.c | 1173 | ||||
-rw-r--r-- | arch/i386/pci/legacy.c | 56 | ||||
-rw-r--r-- | arch/i386/pci/mmconfig-shared.c | 315 | ||||
-rw-r--r-- | arch/i386/pci/mmconfig_32.c | 148 | ||||
-rw-r--r-- | arch/i386/pci/numa.c | 135 | ||||
-rw-r--r-- | arch/i386/pci/pcbios.c | 492 | ||||
-rw-r--r-- | arch/i386/pci/pci.h | 149 | ||||
-rw-r--r-- | arch/i386/pci/visws.c | 111 |
18 files changed, 1 insertions, 4328 deletions
diff --git a/arch/i386/Makefile b/arch/i386/Makefile index da64799484a..87c959d5f35 100644 --- a/arch/i386/Makefile +++ b/arch/i386/Makefile @@ -107,7 +107,7 @@ core-y += arch/i386/kernel/ \ $(mcore-y)/ \ arch/x86/crypto/ drivers-$(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/ diff --git a/arch/i386/pci/Makefile b/arch/i386/pci/Makefile deleted file mode 100644 index d04d8f976d1..00000000000 --- a/arch/i386/pci/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -ifeq ($(CONFIG_X86_32),y) -include ${srctree}/arch/i386/pci/Makefile_32 -else -include ${srctree}/arch/x86_64/pci/Makefile_64 -endif diff --git a/arch/i386/pci/Makefile_32 b/arch/i386/pci/Makefile_32 deleted file mode 100644 index cdd6828b5ab..00000000000 --- a/arch/i386/pci/Makefile_32 +++ /dev/null @@ -1,14 +0,0 @@ -obj-y := i386.o init.o - -obj-$(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 diff --git a/arch/i386/pci/acpi.c b/arch/i386/pci/acpi.c deleted file mode 100644 index bc8a44bddaa..00000000000 --- a/arch/i386/pci/acpi.c +++ /dev/null @@ -1,90 +0,0 @@ -#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); diff --git a/arch/i386/pci/common.c b/arch/i386/pci/common.c deleted file mode 100644 index ebc6f3c6634..00000000000 --- a/arch/i386/pci/common.c +++ /dev/null @@ -1,480 +0,0 @@ -/* - * 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; -} diff --git a/arch/i386/pci/direct.c b/arch/i386/pci/direct.c deleted file mode 100644 index 431c9a51b15..00000000000 --- a/arch/i386/pci/direct.c +++ /dev/null @@ -1,302 +0,0 @@ -/* - * 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; -} diff --git a/arch/i386/pci/early.c b/arch/i386/pci/early.c deleted file mode 100644 index 42df4b6606d..00000000000 --- a/arch/i386/pci/early.c +++ /dev/null @@ -1,59 +0,0 @@ -#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; -} diff --git a/arch/i386/pci/fixup.c b/arch/i386/pci/fixup.c deleted file mode 100644 index c82cbf4c722..00000000000 --- a/arch/i386/pci/fixup.c +++ /dev/null @@ -1,446 +0,0 @@ -/* - * 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_DEVIC |