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[POWERPC] pci32: Add platform option to enable /proc PCI domains 

This adds flags the platforms can use to enable domain numbers
in /proc/bus/pci.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt 2007-12-20 14:54:49 +11:00 committed by Paul Mackerras
parent 853ad6c2e7
commit fa462f2d75
4 changed files with 25 additions and 18 deletions
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16
arch/powerpc/kernel/pci-common.c
View File

@ -639,3 +639,19 @@ void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose,
hose->mem_resources[memno-1] = tmp;
}
}
/* Decide whether to display the domain number in /proc */
int pci_proc_domain(struct pci_bus *bus)
{
struct pci_controller *hose = pci_bus_to_host(bus);
#ifdef CONFIG_PPC64
return hose->buid != 0;
#else
if (!(ppc_pci_flags & PPC_PCI_ENABLE_PROC_DOMAINS))
return 0;
if (ppc_pci_flags & PPC_PCI_COMPAT_DOMAIN_0)
return hose->global_number != 0;
return 1;
#endif
}

8
arch/powerpc/kernel/pci_64.c
View File

@ -586,14 +586,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
return 0;
}
/* Decide whether to display the domain number in /proc */
int pci_proc_domain(struct pci_bus *bus)
{
struct pci_controller *hose = pci_bus_to_host(bus);
return hose->buid != 0;
}
#ifdef CONFIG_HOTPLUG
int pcibios_unmap_io_space(struct pci_bus *bus)

5
include/asm-powerpc/pci-bridge.h
View File

@ -30,6 +30,11 @@ enum {
* ISA forwarding enabled
*/
PPC_PCI_CAN_SKIP_ISA_ALIGN = 0x00000008,
/* Enable domain numbers in /proc */
PPC_PCI_ENABLE_PROC_DOMAINS = 0x00000010,
/* ... except for domain 0 */
PPC_PCI_COMPAT_DOMAIN_0 = 0x00000020,
};

14
include/asm-powerpc/pci.h
View File

@ -98,9 +98,6 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev,
#define get_pci_dma_ops() NULL
#endif
/* Decide whether to display the domain number in /proc */
extern int pci_proc_domain(struct pci_bus *bus);
#else /* 32-bit */
#ifdef CONFIG_PCI
@ -112,17 +109,14 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev,
*strategy_parameter = ~0UL;
}
#endif
/* Set the name of the bus as it appears in /proc/bus/pci */
static inline int pci_proc_domain(struct pci_bus *bus)
{
return 0;
}
#endif /* CONFIG_PPC64 */
extern int pci_domain_nr(struct pci_bus *bus);
/* Decide whether to display the domain number in /proc */
extern int pci_proc_domain(struct pci_bus *bus);
struct vm_area_struct;
/* Map a range of PCI memory or I/O space for a device into user space */
int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,