On Fri, Mar 14, 2014 at 10:34 AM, Liviu Dudau Liviu.Dudau@arm.com 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 | 51 ++++++++++ arch/arm64/kernel/Makefile | 1 + arch/arm64/kernel/pci.c | 173 ++++++++++++++++++++++++++++++++ 6 files changed, 246 insertions(+), 2 deletions(-) create mode 100644 arch/arm64/include/asm/pci.h create mode 100644 arch/arm64/kernel/pci.c
[snip]
+#endif
+extern unsigned long pci_ioremap_io(const struct resource *res, phys_addr_t phys_addr);
Can we at least align the function definition across architectures if not the implementation.
+int pci_register_io_range(phys_addr_t address, resource_size_t size) +{
struct ioresource *res;resource_size_t allocated_size = 0;/* find if the range has not been already allocated */list_for_each_entry(res, &io_list, list) {if (address >= res->start &&address + size <= res->start + size)return 0;allocated_size += res->size;}/* range not already registered, check for space */if (allocated_size + size > IO_SPACE_LIMIT)
I believe this needs to be "allocated_size + size - 1".
return -E2BIG;