diff options
Diffstat (limited to 'src/soc/amd/picasso/include')
-rw-r--r-- | src/soc/amd/picasso/include/soc/smu.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/soc/amd/picasso/include/soc/smu.h b/src/soc/amd/picasso/include/soc/smu.h new file mode 100644 index 0000000000..128f4c4ed7 --- /dev/null +++ b/src/soc/amd/picasso/include/soc/smu.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __PICASSO_SMU_H__ +#define __PICASSO_SMU_H__ + +#include <types.h> + +/* SMU registers accessed indirectly using an index/data pair in D0F00 config space */ +#define SMU_INDEX_ADDR 0xb8 /* 32 bit */ +#define SMU_DATA_ADDR 0xbc /* 32 bit */ + +#define REG_ADDR_MESG_ID 0x3b10528 +#define REG_ADDR_MESG_RESP 0x3b10564 +#define REG_ADDR_MESG_ARGS_BASE 0x0b10998 + +/* Argument 0-5 indexed locations are contiguous */ +#define SMU_NUM_ARGS 6 +#define REG_ADDR_MESG_ARG(x) (REG_ADDR_MESG_ARGS_BASE + ((x) * sizeof(uint32_t))) + +enum smu_message_id { + SMC_MSG_S3ENTRY = 0x0c, +}; + +struct smu_payload { + uint32_t msg[SMU_NUM_ARGS]; +}; + +/* + * Send a message and bi-directional payload to the SMU. SMU response, if + * any, is returned via arg. Returns 0 if success or -1 on failure. + */ +enum cb_err send_smu_message(enum smu_message_id id, struct smu_payload *arg); + +/* + * Request the SMU put system into S3, S4, or S5. On entry, SlpTyp determines + * S-State and SlpTypeEn is clear. Function does not return if successful. + */ +void smu_sx_entry(void); + +#endif /* __PICASSO_SMU_H__ */ |