asm-generic/io.h: implement pci_remap_cfgspace using ioremap_np

Now that we have ioremap_np(), we can make pci_remap_cfgspace() default
to it, falling back to ioremap() on platforms where it is not available.

Remove the arm64 implementation, since that is now redundant. Future
cleanups should be able to do the same for other arches, and eventually
make the generic pci_remap_cfgspace() unconditional.

Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>

1 files changed, 0 insertions, 10 deletions

diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h
index 953b8703af60..7fd836bea7eb 100644
--- a/arch/arm64/include/asm/io.h
+++ b/arch/arm64/include/asm/io.h
@@ -172,16 +172,6 @@ extern void __iomem *ioremap_cache(phys_addr_t phys_addr, size_t size);
 #define ioremap_np(addr, size)		__ioremap((addr), (size), __pgprot(PROT_DEVICE_nGnRnE))
 
 /*
- * PCI configuration space mapping function.
- *
- * The PCI specification disallows posted write configuration transactions.
- * Add an arch specific pci_remap_cfgspace() definition that is implemented
- * through nGnRnE device memory attribute as recommended by the ARM v8
- * Architecture reference manual Issue A.k B2.8.2 "Device memory".
- */
-#define pci_remap_cfgspace(addr, size) __ioremap((addr), (size), __pgprot(PROT_DEVICE_nGnRnE))
-
-/*
  * io{read,write}{16,32,64}be() macros
  */
 #define ioread16be(p)		({ __u16 __v = be16_to_cpu((__force __be16)__raw_readw(p)); __iormb(__v); __v; })