diff options
Diffstat (limited to 'arch/i386/pci')
| -rw-r--r-- | arch/i386/pci/early.c | 7 | ||||
| -rw-r--r-- | arch/i386/pci/irq.c | 4 | ||||
| -rw-r--r-- | arch/i386/pci/pcbios.c | 11 |
3 files changed, 19 insertions, 3 deletions
diff --git a/arch/i386/pci/early.c b/arch/i386/pci/early.c index 713d6c866ca..42df4b6606d 100644 --- a/arch/i386/pci/early.c +++ b/arch/i386/pci/early.c @@ -45,6 +45,13 @@ void write_pci_config(u8 bus, u8 slot, u8 func, u8 offset, 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)) == diff --git a/arch/i386/pci/irq.c b/arch/i386/pci/irq.c index e65551cd821..f2cb942f828 100644 --- a/arch/i386/pci/irq.c +++ b/arch/i386/pci/irq.c @@ -764,7 +764,7 @@ static void __init pirq_find_router(struct irq_router *r) DBG(KERN_DEBUG "PCI: Attempting to find IRQ router for %04x:%04x\n", rt->rtr_vendor, rt->rtr_device); - pirq_router_dev = pci_find_slot(rt->rtr_bus, rt->rtr_devfn); + 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); @@ -784,6 +784,8 @@ static void __init pirq_find_router(struct irq_router *r) 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) diff --git a/arch/i386/pci/pcbios.c b/arch/i386/pci/pcbios.c index ed1512a175a..5f5193401be 100644 --- a/arch/i386/pci/pcbios.c +++ b/arch/i386/pci/pcbios.c @@ -5,6 +5,7 @@ #include <linux/pci.h> #include <linux/init.h> #include <linux/module.h> +#include <linux/uaccess.h> #include "pci.h" #include "pci-functions.h" @@ -314,6 +315,10 @@ static struct pci_raw_ops * __devinit pci_find_bios(void) 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; @@ -331,11 +336,13 @@ static struct pci_raw_ops * __devinit pci_find_bios(void) } 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); + 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); + 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; |