[pci] Define pci_ioremap() for mapping PCI bus addresses

Define pci_ioremap() as a wrapper around ioremap() that could allow
for a non-zero address translation offset.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

4 files changed, 28 insertions, 0 deletions

diff --git a/src/arch/x86/core/pcidirect.c b/src/arch/x86/core/pcidirect.c
index 0d09be84b..9b8226fea 100644
--- a/src/arch/x86/core/pcidirect.c
+++ b/src/arch/x86/core/pcidirect.c
@@ -52,3 +52,4 @@ PROVIDE_PCIAPI_INLINE ( direct, pci_read_config_dword );
 PROVIDE_PCIAPI_INLINE ( direct, pci_write_config_byte );
 PROVIDE_PCIAPI_INLINE ( direct, pci_write_config_word );
 PROVIDE_PCIAPI_INLINE ( direct, pci_write_config_dword );
+PROVIDE_PCIAPI_INLINE ( direct, pci_ioremap );
diff --git a/src/arch/x86/include/ipxe/pcibios.h b/src/arch/x86/include/ipxe/pcibios.h
index 7e1bcd814..bae4eede1 100644
--- a/src/arch/x86/include/ipxe/pcibios.h
+++ b/src/arch/x86/include/ipxe/pcibios.h
@@ -132,4 +132,17 @@ PCIAPI_INLINE ( pcbios, pci_write_config_dword ) ( struct pci_device *pci,
 	return pcibios_write ( pci, PCIBIOS_WRITE_CONFIG_DWORD | where, value);
 }
 
+/**
+ * Map PCI bus address as an I/O address
+ *
+ * @v bus_addr		PCI bus address
+ * @v len		Length of region
+ * @ret io_addr		I/O address, or NULL on error
+ */
+static inline __always_inline void *
+PCIAPI_INLINE ( pcbios, pci_ioremap ) ( struct pci_device *pci __unused,
+					unsigned long bus_addr, size_t len ) {
+	return ioremap ( bus_addr, len );
+}
+
 #endif /* _IPXE_PCIBIOS_H */
diff --git a/src/arch/x86/include/ipxe/pcidirect.h b/src/arch/x86/include/ipxe/pcidirect.h
index d924f2f20..9570fd7d6 100644
--- a/src/arch/x86/include/ipxe/pcidirect.h
+++ b/src/arch/x86/include/ipxe/pcidirect.h
@@ -138,4 +138,17 @@ PCIAPI_INLINE ( direct, pci_write_config_dword ) ( struct pci_device *pci,
 	return 0;
 }
 
+/**
+ * Map PCI bus address as an I/O address
+ *
+ * @v bus_addr		PCI bus address
+ * @v len		Length of region
+ * @ret io_addr		I/O address, or NULL on error
+ */
+static inline __always_inline void *
+PCIAPI_INLINE ( direct, pci_ioremap ) ( struct pci_device *pci __unused,
+					unsigned long bus_addr, size_t len ) {
+	return ioremap ( bus_addr, len );
+}
+
 #endif /* _PCIDIRECT_H */
diff --git a/src/arch/x86/interface/pcbios/pcibios.c b/src/arch/x86/interface/pcbios/pcibios.c
index 07ac0c18d..bf812f77f 100644
--- a/src/arch/x86/interface/pcbios/pcibios.c
+++ b/src/arch/x86/interface/pcbios/pcibios.c
@@ -121,3 +121,4 @@ PROVIDE_PCIAPI_INLINE ( pcbios, pci_read_config_dword );
 PROVIDE_PCIAPI_INLINE ( pcbios, pci_write_config_byte );
 PROVIDE_PCIAPI_INLINE ( pcbios, pci_write_config_word );
 PROVIDE_PCIAPI_INLINE ( pcbios, pci_write_config_dword );
+PROVIDE_PCIAPI_INLINE ( pcbios, pci_ioremap );