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soc: qcom: rpmh-rsc: Add fast-path TCS to debug dump

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When we crash the system and display the TCS controller state, let's
also dump the fast-path TCS information if there was an active
transaction going on at that time.

Change-Id: Iabc7b8af22dd148fca617e571f1392ba3d9a93ab
Signed-off-by: Maulik Shah <quic_mkshah@quicinc.com>
This commit is contained in:
Maulik Shah 2022-05-09 13:12:40 +05:30
parent 106bcadd4a
commit 8ff0d62cc3
1 changed files with 15 additions and 3 deletions
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18
drivers/soc/qcom/rpmh-rsc.c
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@ -760,14 +760,14 @@ static void print_tcs_info(struct rsc_drv *drv, int tcs_id, unsigned long *accl,
bool in_use = test_bit(tcs_id, drv->tcs_in_use);
int i;
if (!tcs_grp || !req)
return;
sts = read_tcs_reg(drv, RSC_DRV_STATUS, tcs_id);
cmds_enabled = read_tcs_reg(drv, RSC_DRV_CMD_ENABLE, tcs_id);
if (!cmds_enabled)
return;
if (!tcs_grp || !req)
goto print_tcs_data;
data = read_tcs_reg(drv, RSC_DRV_CONTROL, tcs_id);
irq_sts = readl_relaxed(drv->tcs_base + RSC_DRV_IRQ_STATUS);
pr_warn("Request: tcs-in-use:%s active_tcs=%s(%d) state=%d wait_for_compl=%u]\n",
@ -780,6 +780,7 @@ static void print_tcs_info(struct rsc_drv *drv, int tcs_id, unsigned long *accl,
*aoss_irq_sts = (irq_sts & BIT(tcs_id)) ? true : false;
print_tcs_data:
for_each_set_bit(i, &cmds_enabled, MAX_CMDS_PER_TCS) {
addr = read_tcs_cmd(drv, RSC_DRV_CMD_ADDR, tcs_id, i);
data = read_tcs_cmd(drv, RSC_DRV_CMD_DATA, tcs_id, i);
@ -834,6 +835,17 @@ void rpmh_rsc_debug(struct rsc_drv *drv, struct completion *compl)
else if (gic_irq_sts)
pr_warn("ERROR:Possible lockup in Linux\n");
/* Show fast path status, if the TCS is busy */
if (drv->tcs[FAST_PATH_TCS].num_tcs) {
int tcs_id = drv->tcs[FAST_PATH_TCS].offset;
bool sts = read_tcs_reg(drv, RSC_DRV_STATUS, tcs_id);
if (!sts) {
pr_err("Fast-path TCS information:\n");
print_tcs_info(drv, tcs_id, &accl, &aoss_irq_sts);
}
}
/*
* The TCS(s) are busy waiting, we have no way to recover from this.
* If this debug function is called, we assume it's because timeout