diff options
Diffstat (limited to 'src/soc/intel/common/block/cse/cse.c')
| -rw-r--r-- | src/soc/intel/common/block/cse/cse.c | 32 |
1 files changed, 24 insertions, 8 deletions
diff --git a/src/soc/intel/common/block/cse/cse.c b/src/soc/intel/common/block/cse/cse.c index 7708c1b5f9..1cea7d9237 100644 --- a/src/soc/intel/common/block/cse/cse.c +++ b/src/soc/intel/common/block/cse/cse.c @@ -384,7 +384,12 @@ send_one_message(uint32_t hdr, const void *buff) return pend_len; } -int +/* + * Send message msg of size len to host from host_addr to cse_addr. + * Returns 1 on success and 0 otherwise. + * In case of error heci_reset() may be required. + */ +static int heci_send(const void *msg, size_t len, uint8_t host_addr, uint8_t client_addr) { uint8_t retry; @@ -487,7 +492,15 @@ recv_one_message(uint32_t *hdr, void *buff, size_t maxlen) return recv_len; } -int heci_receive(void *buff, size_t *maxlen) +/* + * Receive message into buff not exceeding maxlen. Message is considered + * successfully received if a 'complete' indication is read from ME side + * and there was enough space in the buffer to fit that message. maxlen + * is updated with size of message that was received. Returns 0 on failure + * and 1 on success. + * In case of error heci_reset() may be required. + */ +static int heci_receive(void *buff, size_t *maxlen) { uint8_t retry; size_t left, received; @@ -533,9 +546,10 @@ int heci_receive(void *buff, size_t *maxlen) return 0; } -int heci_send_receive(const void *snd_msg, size_t snd_sz, void *rcv_msg, size_t *rcv_sz) +int heci_send_receive(const void *snd_msg, size_t snd_sz, void *rcv_msg, size_t *rcv_sz, + uint8_t cse_addr) { - if (!heci_send(snd_msg, snd_sz, BIOS_HOST_ADDR, HECI_MKHI_ADDR)) { + if (!heci_send(snd_msg, snd_sz, BIOS_HOST_ADDR, cse_addr)) { printk(BIOS_ERR, "HECI: send Failed\n"); return 0; } @@ -663,7 +677,8 @@ static int cse_request_reset(enum rst_req_type rst_type) if (rst_type == CSE_RESET_ONLY) status = heci_send(&msg, sizeof(msg), BIOS_HOST_ADDR, HECI_MKHI_ADDR); else - status = heci_send_receive(&msg, sizeof(msg), &reply, &reply_size); + status = heci_send_receive(&msg, sizeof(msg), &reply, &reply_size, + HECI_MKHI_ADDR); printk(BIOS_DEBUG, "HECI: Global Reset %s!\n", status ? "success" : "failure"); return status; @@ -733,7 +748,7 @@ int cse_hmrfpo_enable(void) } if (!heci_send_receive(&msg, sizeof(struct hmrfpo_enable_msg), - &resp, &resp_size)) + &resp, &resp_size, HECI_MKHI_ADDR)) return 0; if (resp.hdr.result) { @@ -782,7 +797,7 @@ int cse_hmrfpo_get_status(void) } if (!heci_send_receive(&msg, sizeof(struct hmrfpo_get_status_msg), - &resp, &resp_size)) { + &resp, &resp_size, HECI_MKHI_ADDR)) { printk(BIOS_ERR, "HECI: HMRFPO send/receive fail\n"); return -1; } @@ -847,7 +862,8 @@ void print_me_fw_version(void *unused) heci_reset(); - if (!heci_send_receive(&fw_ver_msg, sizeof(fw_ver_msg), &resp, &resp_size)) + if (!heci_send_receive(&fw_ver_msg, sizeof(fw_ver_msg), &resp, &resp_size, + HECI_MKHI_ADDR)) goto fail; if (resp.hdr.result) |