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icnss2: Add support for host triggered recovery

Browse source 
Send force FW crash message to FW via smp2p to trigger
SSR. This will be used by host to recover FW bad state.

Change-Id: If840a94c9102acb775fc67e6fd2098e9ae3b8a33
Signed-off-by: Naman Padhiar <npadhiar@codeaurora.org>
This commit is contained in:
Naman Padhiar 2020-10-29 11:30:25 +05:30 • committed by Gerrit - the friendly Code Review server
commit af089f3e48
2 changed files with 30 additions and 1 deletions
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27
drivers/soc/qcom/icnss2/main.c
View file

@ -1842,6 +1842,30 @@ enable_pdr:
return 0;
}
static int icnss_trigger_ssr_smp2p(struct icnss_priv *priv)
{
unsigned int value = 0;
int ret;
if (IS_ERR(priv->smp2p_info.smem_state))
return -EINVAL;
value |= priv->smp2p_info.seq++;
value <<= ICNSS_SMEM_SEQ_NO_POS;
value |= ICNSS_TRIGGER_SSR;
ret = qcom_smem_state_update_bits(
priv->smp2p_info.smem_state,
ICNSS_SMEM_VALUE_MASK,
value);
if (ret)
icnss_pr_dbg("Error in SMP2P sent ret: %d\n", ret);
icnss_pr_dbg("Initiate Root PD restart. SMP2P sent value: 0x%X\n",
value);
set_bit(ICNSS_HOST_TRIGGERED_PDR, &priv->state);
return ret;
}
static int icnss_tcdev_get_max_state(struct thermal_cooling_device *tcdev,
unsigned long *thermal_state)
{
@ -2688,6 +2712,9 @@ int icnss_trigger_recovery(struct device *dev)
goto out;
}
if (priv->device_id == WCN6750_DEVICE_ID)
return icnss_trigger_ssr_smp2p(priv);
if (!test_bit(ICNSS_PDR_REGISTERED, &priv->state)) {
icnss_pr_err("PD restart not enabled to trigger recovery: state: 0x%lx\n",
priv->state);

4
drivers/soc/qcom/icnss2/main.h
View file

@ -171,10 +171,12 @@ struct icnss_fw_mem {
unsigned long attrs;
};
enum icnss_power_save_mode {
enum icnss_smp2p_msg_id {
ICNSS_POWER_SAVE_ENTER = 1,
ICNSS_POWER_SAVE_EXIT,
ICNSS_TRIGGER_SSR,
};
struct icnss_stats {
struct {
uint32_t posted;