diff options
Diffstat (limited to 'src/soc/amd/common/block/include/amdblocks/espi.h')
| -rw-r--r-- | src/soc/amd/common/block/include/amdblocks/espi.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/soc/amd/common/block/include/amdblocks/espi.h b/src/soc/amd/common/block/include/amdblocks/espi.h index 82410e58d3..53cc5f9f3f 100644 --- a/src/soc/amd/common/block/include/amdblocks/espi.h +++ b/src/soc/amd/common/block/include/amdblocks/espi.h @@ -4,6 +4,9 @@ #ifndef __AMDBLOCKS_ESPI_H__ #define __AMDBLOCKS_ESPI_H__ +#include <stdint.h> +#include <stddef.h> + /* eSPI MMIO base lives at an offset of 0x10000 from the address in SPI BAR. */ #define ESPI_OFFSET_FROM_BAR 0x10000 @@ -24,4 +27,32 @@ #define ESPI_GENERIC_MMIO_WIN_COUNT 4 #define ESPI_GENERIC_MMIO_MAX_WIN_SIZE 0x10000 +struct espi_config { + /* Bitmap for standard IO decodes. Use ESPI_DECODE_IO_* above. */ + uint32_t std_io_decode_bitmap; + + struct { + uint16_t base; + size_t size; + } generic_io_range[ESPI_GENERIC_IO_WIN_COUNT]; +}; + +/* + * Open I/O window using the provided base and size. + * Return value: 0 = success, -1 = error. + */ +int espi_open_io_window(uint16_t base, size_t size); + +/* + * Open MMIO window using the provided base and size. + * Return value: 0 = success, -1 = error. + */ +int espi_open_mmio_window(uint32_t base, size_t size); + +/* + * Configure generic and standard I/O decode windows using the espi_config structure settings + * provided by mainboard in device tree. + */ +void espi_configure_decodes(void); + #endif /* __AMDBLOCKS_ESPI_H__ */ |