diff options
| -rw-r--r-- | hw/fsp/fsp.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/hw/fsp/fsp.c b/hw/fsp/fsp.c index 8a73f2c..32c1d79 100644 --- a/hw/fsp/fsp.c +++ b/hw/fsp/fsp.c @@ -91,6 +91,7 @@ static void *fsp_inbound_buf = NULL; static u32 fsp_inbound_off; static struct lock fsp_lock = LOCK_UNLOCKED; +static struct lock fsp_poll_lock = LOCK_UNLOCKED; static u64 fsp_cmdclass_resp_bitmask; static u64 timeout_timer; @@ -1920,11 +1921,14 @@ static void fsp_timeout_poll(void *data __unused) * So every 30secs, check if there is any message * waiting for a response from the FSP */ - if ((tb_compare(now, timeout_timer) == TB_AAFTERB) || - (tb_compare(now, timeout_timer) == TB_AEQUALB)) - timeout_timer = now + secs_to_tb(30); - else + if (tb_compare(now, timeout_timer) == TB_ABEFOREB) + return; + if (!try_lock(&fsp_poll_lock)) return; + if (tb_compare(now, timeout_timer) == TB_ABEFOREB) { + unlock(&fsp_poll_lock); + return; + } while (cmdclass_resp_bitmask) { u64 time_sent = 0; @@ -1940,26 +1944,32 @@ static void fsp_timeout_poll(void *data __unused) /* Now check if the response has timed out */ if (tb_compare(time_to_comp, timeout_val) == TB_AAFTERB) { - u64 resetbit = 0; u32 w0, w1; enum fsp_msg_state mstate; /* Take the FSP lock now and re-check */ lock(&fsp_lock); - if (!(fsp_cmdclass_resp_bitmask & (1 << index)) || + if (!(fsp_cmdclass_resp_bitmask & (1ull << index)) || time_sent != cmdclass->timesent) { unlock(&fsp_lock); goto next_bit; } req = list_top(&cmdclass->msgq, struct fsp_msg, link); + if (!req) { + printf("FSP: Timeout state mismatch on class %d\n", + index); + fsp_cmdclass_resp_bitmask &= ~(1ull << index); + cmdclass->timesent = 0; + unlock(&fsp_lock); + goto next_bit; + } w0 = req->word0; w1 = req->word1; mstate = req->state; printf("FSP: Response from FSP timed out, word0 = %x," "word1 = %x state: %d\n", w0, w1, mstate); fsp_reg_dump(); - resetbit = ~fsp_get_class_bit(req->word0 & 0xff); - fsp_cmdclass_resp_bitmask &= resetbit; + fsp_cmdclass_resp_bitmask &= ~(1ull << index); cmdclass->timesent = 0; if (req->resp) req->resp->state = fsp_msg_timeout; @@ -1974,6 +1984,7 @@ static void fsp_timeout_poll(void *data __unused) cmdclass_resp_bitmask = cmdclass_resp_bitmask >> 1; index++; } + unlock(&fsp_poll_lock); } void fsp_opl(void) |