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-rw-r--r--arch/alpha/include/asm/pci.h5
-rw-r--r--arch/arm/include/asm/pci.h5
-rw-r--r--arch/blackfin/include/asm/pci.h5
-rw-r--r--arch/cris/include/asm/pci.h1
-rw-r--r--arch/frv/include/asm/pci.h2
-rw-r--r--arch/frv/mb93090-mb00/pci-irq.c4
-rw-r--r--arch/ia64/include/asm/pci.h6
-rw-r--r--arch/microblaze/include/asm/pci.h5
-rw-r--r--arch/mips/include/asm/pci.h5
-rw-r--r--arch/mn10300/include/asm/pci.h1
-rw-r--r--arch/mn10300/unit-asb2305/pci-irq.c4
-rw-r--r--arch/parisc/include/asm/pci.h5
-rw-r--r--arch/powerpc/include/asm/pci.h5
-rw-r--r--arch/sh/include/asm/pci.h5
-rw-r--r--arch/sparc/include/asm/pci_32.h5
-rw-r--r--arch/sparc/include/asm/pci_64.h5
-rw-r--r--arch/unicore32/include/asm/pci.h5
-rw-r--r--arch/x86/include/asm/pci.h1
-rw-r--r--arch/xtensa/include/asm/pci.h5
-rw-r--r--drivers/pci/access.c12
-rw-r--r--drivers/pci/pci.c11
-rw-r--r--drivers/pci/probe.c39
-rw-r--r--include/linux/pci.h5
23 files changed, 56 insertions, 90 deletions
diff --git a/arch/alpha/include/asm/pci.h b/arch/alpha/include/asm/pci.h
index d01afb78919c..f7f680f7457d 100644
--- a/arch/alpha/include/asm/pci.h
+++ b/arch/alpha/include/asm/pci.h
@@ -59,11 +59,6 @@ struct pci_controller {
extern void pcibios_set_master(struct pci_dev *dev);
-extern inline void pcibios_penalize_isa_irq(int irq, int active)
-{
- /* We don't do dynamic PCI IRQ allocation */
-}
-
/* IOMMU controls. */
/* The PCI address space does not equal the physical memory address space.
diff --git a/arch/arm/include/asm/pci.h b/arch/arm/include/asm/pci.h
index 680a83e94467..7e95d8535e24 100644
--- a/arch/arm/include/asm/pci.h
+++ b/arch/arm/include/asm/pci.h
@@ -31,11 +31,6 @@ static inline int pci_proc_domain(struct pci_bus *bus)
}
#endif /* CONFIG_PCI_DOMAINS */
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
- /* We don't do dynamic PCI IRQ allocation */
-}
-
/*
* The PCI address space does equal the physical memory address space.
* The networking and block device layers use this boolean for bounce
diff --git a/arch/blackfin/include/asm/pci.h b/arch/blackfin/include/asm/pci.h
index 74352c4597d9..c737909fba47 100644
--- a/arch/blackfin/include/asm/pci.h
+++ b/arch/blackfin/include/asm/pci.h
@@ -10,9 +10,4 @@
#define PCIBIOS_MIN_IO 0x00001000
#define PCIBIOS_MIN_MEM 0x10000000
-static inline void pcibios_penalize_isa_irq(int irq)
-{
- /* We don't do dynamic PCI IRQ allocation */
-}
-
#endif /* _ASM_BFIN_PCI_H */
diff --git a/arch/cris/include/asm/pci.h b/arch/cris/include/asm/pci.h
index f666734926d5..cc2399c175e9 100644
--- a/arch/cris/include/asm/pci.h
+++ b/arch/cris/include/asm/pci.h
@@ -20,7 +20,6 @@ void pcibios_config_init(void);
struct pci_bus * pcibios_scan_root(int bus);
void pcibios_set_master(struct pci_dev *dev);
-void pcibios_penalize_isa_irq(int irq);
struct irq_routing_table *pcibios_get_irq_routing_table(void);
int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
diff --git a/arch/frv/include/asm/pci.h b/arch/frv/include/asm/pci.h
index ef03baf5d89d..2035a4d3f9b9 100644
--- a/arch/frv/include/asm/pci.h
+++ b/arch/frv/include/asm/pci.h
@@ -24,8 +24,6 @@ struct pci_dev;
extern void pcibios_set_master(struct pci_dev *dev);
-extern void pcibios_penalize_isa_irq(int irq);
-
#ifdef CONFIG_MMU
extern void *consistent_alloc(gfp_t gfp, size_t size, dma_addr_t *dma_handle);
extern void consistent_free(void *vaddr);
diff --git a/arch/frv/mb93090-mb00/pci-irq.c b/arch/frv/mb93090-mb00/pci-irq.c
index c677b9d81d30..1c35c93f942b 100644
--- a/arch/frv/mb93090-mb00/pci-irq.c
+++ b/arch/frv/mb93090-mb00/pci-irq.c
@@ -55,10 +55,6 @@ void __init pcibios_fixup_irqs(void)
}
}
-void __init pcibios_penalize_isa_irq(int irq)
-{
-}
-
void pcibios_enable_irq(struct pci_dev *dev)
{
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
diff --git a/arch/ia64/include/asm/pci.h b/arch/ia64/include/asm/pci.h
index 7d41cc089822..52af5ed9f60b 100644
--- a/arch/ia64/include/asm/pci.h
+++ b/arch/ia64/include/asm/pci.h
@@ -50,12 +50,6 @@ struct pci_dev;
extern unsigned long ia64_max_iommu_merge_mask;
#define PCI_DMA_BUS_IS_PHYS (ia64_max_iommu_merge_mask == ~0UL)
-static inline void
-pcibios_penalize_isa_irq (int irq, int active)
-{
- /* We don't do dynamic PCI IRQ allocation */
-}
-
#include <asm-generic/pci-dma-compat.h>
#ifdef CONFIG_PCI
diff --git a/arch/microblaze/include/asm/pci.h b/arch/microblaze/include/asm/pci.h
index 935f9bec414a..335524040fff 100644
--- a/arch/microblaze/include/asm/pci.h
+++ b/arch/microblaze/include/asm/pci.h
@@ -44,11 +44,6 @@ struct pci_dev;
*/
#define pcibios_assign_all_busses() 0
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
- /* We don't do dynamic PCI IRQ allocation */
-}
-
#ifdef CONFIG_PCI
extern void set_pci_dma_ops(struct dma_map_ops *dma_ops);
extern struct dma_map_ops *get_pci_dma_ops(void);
diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
index 12d6842962be..974b0e308963 100644
--- a/arch/mips/include/asm/pci.h
+++ b/arch/mips/include/asm/pci.h
@@ -73,11 +73,6 @@ extern unsigned long PCIBIOS_MIN_MEM;
extern void pcibios_set_master(struct pci_dev *dev);
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
- /* We don't do dynamic PCI IRQ allocation */
-}
-
#define HAVE_PCI_MMAP
extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
diff --git a/arch/mn10300/include/asm/pci.h b/arch/mn10300/include/asm/pci.h
index 166323824683..5f70af25c7d0 100644
--- a/arch/mn10300/include/asm/pci.h
+++ b/arch/mn10300/include/asm/pci.h
@@ -48,7 +48,6 @@ extern void unit_pci_init(void);
#define PCIBIOS_MIN_MEM 0xB8000000
void pcibios_set_master(struct pci_dev *dev);
-void pcibios_penalize_isa_irq(int irq);
/* Dynamic DMA mapping stuff.
* i386 has everything mapped statically.
diff --git a/arch/mn10300/unit-asb2305/pci-irq.c b/arch/mn10300/unit-asb2305/pci-irq.c
index 77439da04671..fcb28ceb824d 100644
--- a/arch/mn10300/unit-asb2305/pci-irq.c
+++ b/arch/mn10300/unit-asb2305/pci-irq.c
@@ -40,10 +40,6 @@ void __init pcibios_fixup_irqs(void)
}
}
-void __init pcibios_penalize_isa_irq(int irq)
-{
-}
-
void pcibios_enable_irq(struct pci_dev *dev)
{
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
diff --git a/arch/parisc/include/asm/pci.h b/arch/parisc/include/asm/pci.h
index 465154076d23..20df2b04fc09 100644
--- a/arch/parisc/include/asm/pci.h
+++ b/arch/parisc/include/asm/pci.h
@@ -215,11 +215,6 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev,
}
#endif
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
- /* We don't need to penalize isa irq's */
-}
-
static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
{
return channel ? 15 : 14;
diff --git a/arch/powerpc/include/asm/pci.h b/arch/powerpc/include/asm/pci.h
index 95145a15c708..1b0739bc14b5 100644
--- a/arch/powerpc/include/asm/pci.h
+++ b/arch/powerpc/include/asm/pci.h
@@ -46,11 +46,6 @@ struct pci_dev;
#define pcibios_assign_all_busses() \
(pci_has_flag(PCI_REASSIGN_ALL_BUS))
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
- /* We don't do dynamic PCI IRQ allocation */
-}
-
#define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ
static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
{
diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h
index bff96c2e7d25..5b4511552998 100644
--- a/arch/sh/include/asm/pci.h
+++ b/arch/sh/include/asm/pci.h
@@ -70,11 +70,6 @@ extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
enum pci_mmap_state mmap_state, int write_combine);
extern void pcibios_set_master(struct pci_dev *dev);
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
- /* We don't do dynamic PCI IRQ allocation */
-}
-
/* Dynamic DMA mapping stuff.
* SuperH has everything mapped statically like x86.
*/
diff --git a/arch/sparc/include/asm/pci_32.h b/arch/sparc/include/asm/pci_32.h
index dc503297481f..53e9b4987db0 100644
--- a/arch/sparc/include/asm/pci_32.h
+++ b/arch/sparc/include/asm/pci_32.h
@@ -16,11 +16,6 @@
#define PCI_IRQ_NONE 0xffffffff
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
- /* We don't do dynamic PCI IRQ allocation */
-}
-
/* Dynamic DMA mapping stuff.
*/
#define PCI_DMA_BUS_IS_PHYS (0)
diff --git a/arch/sparc/include/asm/pci_64.h b/arch/sparc/include/asm/pci_64.h
index 1633b718d3bc..c6c7396e7627 100644
--- a/arch/sparc/include/asm/pci_64.h
+++ b/arch/sparc/include/asm/pci_64.h
@@ -16,11 +16,6 @@
#define PCI_IRQ_NONE 0xffffffff
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
- /* We don't do dynamic PCI IRQ allocation */
-}
-
/* The PCI address space does not equal the physical memory
* address space. The networking and block device layers use
* this boolean for bounce buffer decisions.
diff --git a/arch/unicore32/include/asm/pci.h b/arch/unicore32/include/asm/pci.h
index f5e108f4a151..654407e98619 100644
--- a/arch/unicore32/include/asm/pci.h
+++ b/arch/unicore32/include/asm/pci.h
@@ -18,11 +18,6 @@
#include <asm-generic/pci.h>
#include <mach/hardware.h> /* for PCIBIOS_MIN_* */
-static inline void pcibios_penalize_isa_irq(int irq, int active)
-{
- /* We don't do dynamic PCI IRQ allocation */
-}
-
#ifdef CONFIG_PCI
static inline void pci_dma_burst_advice(struct pci_dev *pdev,
enum pci_dma_burst_strategy *strat,
diff --git a/arch/x86/include/asm/pci.h b/arch/x86/include/asm/pci.h
index 96ae4f4040bb..0892ea0e683f 100644
--- a/arch/x86/include/asm/pci.h
+++ b/arch/x86/include/asm/pci.h
@@ -68,7 +68,6 @@ void pcibios_config_init(void);
void pcibios_scan_root(int bus);
void pcibios_set_master(struct pci_dev *dev);
-void pcibios_penalize_isa_irq(int irq, int active);
struct irq_routing_table *pcibios_get_irq_routing_table(void);
int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);
diff --git a/arch/xtensa/include/asm/pci.h b/arch/xtensa/include/asm/pci.h
index 614be031a79a..5d52dc43dfe7 100644
--- a/arch/xtensa/include/asm/pci.h
+++ b/arch/xtensa/include/asm/pci.h
@@ -22,11 +22,6 @@
extern struct pci_controller* pcibios_alloc_controller(void);
-static inline void pcibios_penalize_isa_irq(int irq)
-{
- /* We don't do dynamic PCI IRQ allocation */
-}
-
/* Assume some values. (We should revise them, if necessary) */
#define PCIBIOS_MIN_IO 0x2000
diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 7f8b78c08879..8c148f39e8d7 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -148,7 +148,7 @@ static noinline void pci_wait_cfg(struct pci_dev *dev)
int pci_user_read_config_##size \
(struct pci_dev *dev, int pos, type *val) \
{ \
- int ret = 0; \
+ int ret = PCIBIOS_SUCCESSFUL; \
u32 data = -1; \
if (PCI_##size##_BAD) \
return -EINVAL; \
@@ -159,9 +159,7 @@ int pci_user_read_config_##size \
pos, sizeof(type), &data); \
raw_spin_unlock_irq(&pci_lock); \
*val = (type)data; \
- if (ret > 0) \
- ret = -EINVAL; \
- return ret; \
+ return pcibios_err_to_errno(ret); \
} \
EXPORT_SYMBOL_GPL(pci_user_read_config_##size);
@@ -170,7 +168,7 @@ EXPORT_SYMBOL_GPL(pci_user_read_config_##size);
int pci_user_write_config_##size \
(struct pci_dev *dev, int pos, type val) \
{ \
- int ret = -EIO; \
+ int ret = PCIBIOS_SUCCESSFUL; \
if (PCI_##size##_BAD) \
return -EINVAL; \
raw_spin_lock_irq(&pci_lock); \
@@ -179,9 +177,7 @@ int pci_user_write_config_##size \
ret = dev->bus->ops->write(dev->bus, dev->devfn, \
pos, sizeof(type), val); \
raw_spin_unlock_irq(&pci_lock); \
- if (ret > 0) \
- ret = -EINVAL; \
- return ret; \
+ return pcibios_err_to_errno(ret); \
} \
EXPORT_SYMBOL_GPL(pci_user_write_config_##size);
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index f988bb18eba5..fd958c8ebd83 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1468,6 +1468,17 @@ void __weak pcibios_release_device(struct pci_dev *dev) {}
*/
void __weak pcibios_disable_device (struct pci_dev *dev) {}
+/**
+ * pcibios_penalize_isa_irq - penalize an ISA IRQ
+ * @irq: ISA IRQ to penalize
+ * @active: IRQ active or not
+ *
+ * Permits the platform to provide architecture-specific functionality when
+ * penalizing ISA IRQs. This is the default implementation. Architecture
+ * implementations can override this.
+ */
+void __weak pcibios_penalize_isa_irq(int irq, int active) {}
+
static void do_pci_disable_device(struct pci_dev *dev)
{
u16 pci_command;
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 36f1fd174b07..2bbf5221afb3 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -994,6 +994,43 @@ void set_pcie_hotplug_bridge(struct pci_dev *pdev)
/**
+ * pci_ext_cfg_is_aliased - is ext config space just an alias of std config?
+ * @dev: PCI device
+ *
+ * PCI Express to PCI/PCI-X Bridge Specification, rev 1.0, 4.1.4 says that
+ * when forwarding a type1 configuration request the bridge must check that
+ * the extended register address field is zero. The bridge is not permitted
+ * to forward the transactions and must handle it as an Unsupported Request.
+ * Some bridges do not follow this rule and simply drop the extended register
+ * bits, resulting in the standard config space being aliased, every 256
+ * bytes across the entire configuration space. Test for this condition by
+ * comparing the first dword of each potential alias to the vendor/device ID.
+ * Known offenders:
+ * ASM1083/1085 PCIe-to-PCI Reversible Bridge (1b21:1080, rev 01 & 03)
+ * AMD/ATI SBx00 PCI to PCI Bridge (1002:4384, rev 40)
+ */
+static bool pci_ext_cfg_is_aliased(struct pci_dev *dev)
+{
+#ifdef CONFIG_PCI_QUIRKS
+ int pos;
+ u32 header, tmp;
+
+ pci_read_config_dword(dev, PCI_VENDOR_ID, &header);
+
+ for (pos = PCI_CFG_SPACE_SIZE;
+ pos < PCI_CFG_SPACE_EXP_SIZE; pos += PCI_CFG_SPACE_SIZE) {
+ if (pci_read_config_dword(dev, pos, &tmp) != PCIBIOS_SUCCESSFUL
+ || header != tmp)
+ return false;
+ }
+
+ return true;
+#else
+ return false;
+#endif
+}
+
+/**
* pci_cfg_space_size - get the configuration space size of the PCI device.
* @dev: PCI device
*
@@ -1011,7 +1048,7 @@ static int pci_cfg_space_size_ext(struct pci_dev *dev)
if (pci_read_config_dword(dev, pos, &status) != PCIBIOS_SUCCESSFUL)
goto fail;
- if (status == 0xffffffff)
+ if (status == 0xffffffff || pci_ext_cfg_is_aliased(dev))
goto fail;
return PCI_CFG_SPACE_EXP_SIZE;
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 4eb99966570e..65f22e85612d 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -532,7 +532,7 @@ static inline int pcibios_err_to_errno(int err)
case PCIBIOS_FUNC_NOT_SUPPORTED:
return -ENOENT;
case PCIBIOS_BAD_VENDOR_ID:
- return -EINVAL;
+ return -ENOTTY;
case PCIBIOS_DEVICE_NOT_FOUND:
return -ENODEV;
case PCIBIOS_BAD_REGISTER_NUMBER:
@@ -543,7 +543,7 @@ static inline int pcibios_err_to_errno(int err)
return -ENOSPC;
}
- return -ENOTTY;
+ return -ERANGE;
}
/* Low-level architecture-dependent routines */
@@ -1592,6 +1592,7 @@ int pcibios_set_pcie_reset_state(struct pci_dev *dev,
enum pcie_reset_state state);
int pcibios_add_device(struct pci_dev *dev);
void pcibios_release_device(struct pci_dev *dev);
+void pcibios_penalize_isa_irq(int irq, int active);
#ifdef CONFIG_HIBERNATE_CALLBACKS
extern struct dev_pm_ops pcibios_pm_ops;
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-30 17:22:56 +0000