Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / include / ipxe / efi / efi_pci_api.h

diff --git a/qemu/roms/ipxe/src/include/ipxe/efi/efi_pci_api.h b/qemu/roms/ipxe/src/include/ipxe/efi/efi_pci_api.h
new file mode 100644 (file)
index 0000000..498a038
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/ipxe/efi/efi_pci_api.h
@@ -0,0 +1,151 @@
+#ifndef _IPXE_EFI_PCI_API_H
+#define _IPXE_EFI_PCI_API_H
+
+/** @file
+ *
+ * iPXE PCI I/O API for EFI
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#ifdef PCIAPI_EFI
+#define PCIAPI_PREFIX_efi
+#else
+#define PCIAPI_PREFIX_efi __efi_
+#endif
+
+/* EFI PCI width codes defined by EFI spec */
+#define EFIPCI_WIDTH_BYTE 0
+#define EFIPCI_WIDTH_WORD 1
+#define EFIPCI_WIDTH_DWORD 2
+
+#define EFIPCI_LOCATION( _offset, _width ) \
+       ( (_offset) | ( (_width) << 16 ) )
+#define EFIPCI_OFFSET( _location ) ( (_location) & 0xffff )
+#define EFIPCI_WIDTH( _location ) ( (_location) >> 16 )
+
+struct pci_device;
+
+extern int efipci_read ( struct pci_device *pci, unsigned long location,
+                        void *value );
+extern int efipci_write ( struct pci_device *pci, unsigned long location,
+                         unsigned long value );
+
+/**
+ * Determine number of PCI buses within system
+ *
+ * @ret num_bus                Number of buses
+ */
+static inline __always_inline int
+PCIAPI_INLINE ( efi, pci_num_bus ) ( void ) {
+       /* EFI does not want us to scan the PCI bus ourselves */
+       return 0;
+}
+
+/**
+ * Read byte from PCI configuration space via EFI
+ *
+ * @v pci      PCI device
+ * @v where    Location within PCI configuration space
+ * @v value    Value read
+ * @ret rc     Return status code
+ */
+static inline __always_inline int
+PCIAPI_INLINE ( efi, pci_read_config_byte ) ( struct pci_device *pci,
+                                             unsigned int where,
+                                             uint8_t *value ) {
+       *value = 0xff;
+       return efipci_read ( pci,
+                            EFIPCI_LOCATION ( where, EFIPCI_WIDTH_BYTE ),
+                            value );
+}
+
+/**
+ * Read word from PCI configuration space via EFI
+ *
+ * @v pci      PCI device
+ * @v where    Location within PCI configuration space
+ * @v value    Value read
+ * @ret rc     Return status code
+ */
+static inline __always_inline int
+PCIAPI_INLINE ( efi, pci_read_config_word ) ( struct pci_device *pci,
+                                             unsigned int where,
+                                             uint16_t *value ) {
+       *value = 0xffff;
+       return efipci_read ( pci,
+                            EFIPCI_LOCATION ( where, EFIPCI_WIDTH_WORD ),
+                            value );
+}
+
+/**
+ * Read dword from PCI configuration space via EFI
+ *
+ * @v pci      PCI device
+ * @v where    Location within PCI configuration space
+ * @v value    Value read
+ * @ret rc     Return status code
+ */
+static inline __always_inline int
+PCIAPI_INLINE ( efi, pci_read_config_dword ) ( struct pci_device *pci,
+                                              unsigned int where,
+                                              uint32_t *value ) {
+       *value = 0xffffffffUL;
+       return efipci_read ( pci,
+                            EFIPCI_LOCATION ( where, EFIPCI_WIDTH_DWORD ),
+                            value );
+}
+
+/**
+ * Write byte to PCI configuration space via EFI
+ *
+ * @v pci      PCI device
+ * @v where    Location within PCI configuration space
+ * @v value    Value to be written
+ * @ret rc     Return status code
+ */
+static inline __always_inline int
+PCIAPI_INLINE ( efi, pci_write_config_byte ) ( struct pci_device *pci,
+                                              unsigned int where,
+                                              uint8_t value ) {
+       return efipci_write ( pci,
+                             EFIPCI_LOCATION ( where, EFIPCI_WIDTH_BYTE ),
+                             value );
+}
+
+/**
+ * Write word to PCI configuration space via EFI
+ *
+ * @v pci      PCI device
+ * @v where    Location within PCI configuration space
+ * @v value    Value to be written
+ * @ret rc     Return status code
+ */
+static inline __always_inline int
+PCIAPI_INLINE ( efi, pci_write_config_word ) ( struct pci_device *pci,
+                                              unsigned int where,
+                                              uint16_t value ) {
+       return efipci_write ( pci,
+                             EFIPCI_LOCATION ( where, EFIPCI_WIDTH_WORD ),
+                             value );
+}
+
+/**
+ * Write dword to PCI configuration space via EFI
+ *
+ * @v pci      PCI device
+ * @v where    Location within PCI configuration space
+ * @v value    Value to be written
+ * @ret rc     Return status code
+ */
+static inline __always_inline int
+PCIAPI_INLINE ( efi, pci_write_config_dword ) ( struct pci_device *pci,
+                                               unsigned int where,
+                                               uint32_t value ) {
+       return efipci_write ( pci,
+                             EFIPCI_LOCATION ( where, EFIPCI_WIDTH_DWORD ),
+                             value );
+}
+
+#endif /* _IPXE_EFI_PCI_API_H */