diff options
Diffstat (limited to 'src/include/runtime')
| -rw-r--r-- | src/include/runtime/interface.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/include/runtime/interface.h b/src/include/runtime/interface.h index 9f52c09c1..9ade9a07d 100644 --- a/src/include/runtime/interface.h +++ b/src/include/runtime/interface.h @@ -41,6 +41,24 @@ #include <stdint.h> #include <time.h> + +/** + * i2c master description: chip, engine and port packed into + * a single 64-bit argument + * + * --------------------------------------------------- + * | chip | reserved | eng | port | + * | (32) | (16) | (8) | (8) | + * --------------------------------------------------- + */ +#define HBRT_I2C_MASTER_CHIP_SHIFT 32 +#define HBRT_I2C_MASTER_CHIP_MASK (0xfffffffful << 32) +#define HBRT_I2C_MASTER_ENGINE_SHIFT 8 +#define HBRT_I2C_MASTER_ENGINE_MASK (0xfful << 8) +#define HBRT_I2C_MASTER_PORT_SHIFT 0 +#define HBRT_I2C_MASTER_PORT_MASK (0xfful) + + /** @typedef hostInterfaces_t * @brief Interfaces provided by the underlying environment (ex. Sapphire). * @@ -179,6 +197,36 @@ typedef struct hostInterfaces int (*pnor_write) (uint32_t i_proc, const char* i_partitionName, uint64_t i_offset, void* i_data, size_t i_sizeBytes); + /** + * @brief Read data from an i2c device + * @param[in] i_master - Chip/engine/port of i2c bus + * @param[in] i_devAddr - I2C address of device + * @param[in] i_offsetSize - Length of offset (in bytes) + * @param[in] i_offset - Offset within device to read + * @param[in] i_length - Number of bytes to read + * @param[out] o_data - Data that was read + * @return 0 on success else return code + * @platform OpenPOWER + */ + int (*i2c_read)( uint64_t i_master, uint16_t i_devAddr, + uint32_t i_offsetSize, uint32_t i_offset, + uint32_t i_length, void* o_data ); + + /** + * @brief Write data to an i2c device + * @param[in] i_master - Chip/engine/port of i2c bus + * @param[in] i_devAddr - I2C address of device + * @param[in] i_offsetSize - Length of offset (in bytes) + * @param[in] i_offset - Offset within device to write + * @param[in] i_length - Number of bytes to write + * @param[in] Data to write + * @return 0 on success else return code + * @platform OpenPOWER + */ + int (*i2c_write)( uint64_t i_master, uint16_t i_devAddr, + uint32_t i_offsetSize, uint32_t i_offset, + uint32_t i_length, void* i_data ); + // Reserve some space for future growth. void (*reserved[32])(void); |
