On Wednesday, March 05, 2014 8:49 PM, Liviu Dudau wrote:
Use the generic host bridge functions to provide support for PCI Express on arm64. There is no support for ISA memory.
Signed-off-by: Liviu Dudau Liviu.Dudau@arm.com Tested-by: Tanmay Inamdar tinamdar@apm.com
arch/arm64/Kconfig | 19 +++- arch/arm64/include/asm/Kbuild | 1 + arch/arm64/include/asm/io.h | 3 +- arch/arm64/include/asm/pci.h | 49 +++++++++ arch/arm64/kernel/Makefile | 1 + arch/arm64/kernel/pci.c | 173 ++++++++++++++++++++++++++++++++ 6 files changed, 244 insertions(+), 2 deletions(-) create mode 100644 arch/arm64/include/asm/pci.h create mode 100644 arch/arm64/kernel/pci.c
[.....]
--- /dev/null +++ b/arch/arm64/include/asm/pci.h
[.....]
+static inline int pci_domain_nr(struct pci_bus *bus) +{
- struct pci_host_bridge *bridge = find_pci_host_bridge(bus);
- if (bridge)
return bridge->domain_nr;- return 0;
+}
Hi Liviu Dudau,
When CONFIG_PCI=n, the following build errors happen. :-( Would you confirm this?
In file included from include/linux/pci.h:1393:0, from drivers/scsi/scsi_lib.c:19: arch/arm64/include/asm/pci.h:31:19: error: redefinition of 'pci_domain_nr' static inline int pci_domain_nr(struct pci_bus *bus) ^ In file included from drivers/scsi/scsi_lib.c:19:0: include/linux/pci.h:1383:19: note: previous definition of 'pci_domain_nr' was here static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } ^ .....
Best regards, Jingoo Han