Ipq8064 SoC requires larger IO_SPACE_LIMIT on second and third pci port. Each pci line I/O space require 0x100000 and the current limit in the specific case of ipq8064 cause the malfunction of the second and the third line that are commonly used for wifi cards. Current IO space is set to support only 0x100000 space while for ipq806x if all 3 pcie lines are connected, it's required 0x300000 of space. Update the IO_SPACE_LIMIT to permit this larger space and update the documentation for the Mapping PCI I/O space memory end to the new value of ff0fffff. Signed-off-by: Ansuel Smith <ansuelsmth@xxxxxxxxx> --- Documentation/arm/memory.rst | 2 +- arch/arm/include/asm/io.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/arm/memory.rst b/Documentation/arm/memory.rst index 0cb1e2938823..938fe74c9020 100644 --- a/Documentation/arm/memory.rst +++ b/Documentation/arm/memory.rst @@ -53,7 +53,7 @@ ffc00000 ffc7ffff Guard region ff800000 ffbfffff Permanent, fixed read-only mapping of the firmware provided DT blob -fee00000 feffffff Mapping of PCI I/O space. This is a static +fee00000 ff0fffff Mapping of PCI I/O space. This is a static mapping within the vmalloc space. VMALLOC_START VMALLOC_END-1 vmalloc() / ioremap() space. diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h index fc748122f1e0..76f1c668df5e 100644 --- a/arch/arm/include/asm/io.h +++ b/arch/arm/include/asm/io.h @@ -197,7 +197,7 @@ void __iomem *pci_remap_cfgspace(resource_size_t res_cookie, size_t size); #ifdef CONFIG_NEED_MACH_IO_H #include <mach/io.h> #elif defined(CONFIG_PCI) -#define IO_SPACE_LIMIT ((resource_size_t)0xfffff) +#define IO_SPACE_LIMIT ((resource_size_t)0x2fffff) #define __io(a) __typesafe_io(PCI_IO_VIRT_BASE + ((a) & IO_SPACE_LIMIT)) #else #define __io(a) __typesafe_io((a) & IO_SPACE_LIMIT) -- 2.30.2
