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qcacmn: Add history for register write failure

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Maintain a history of the register writes which
have failed. The failure of register write is
determined by reading back the register after
writing a value to that register. If the read
value does not match the value which was written
then it is termed as a failed register write.

Change-Id: Ic3423c2cbd74bf498c0d3dd8ee7ce4231054541a
CRs-Fixed: 2624475
This commit is contained in:
Rakesh Pillai
2020-02-18 19:49:57 +05:30
committed by nshrivas
parent dfdfce1e58
commit 8e01014b7d
3 changed files with 97 additions and 7 deletions
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34
hal/wifi3.0/hal_srng.c
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@@ -47,6 +47,39 @@ void hal_qca6750_attach(struct hal_soc *hal);
bool is_hal_verbose_debug_enabled;
#endif
#ifdef ENABLE_HAL_REG_WR_HISTORY
struct hal_reg_write_fail_history hal_reg_wr_hist;
void hal_reg_wr_fail_history_add(struct hal_soc *hal_soc,
uint32_t offset,
uint32_t wr_val, uint32_t rd_val)
{
struct hal_reg_write_fail_entry *record;
int idx;
idx = hal_history_get_next_index(&hal_soc->reg_wr_fail_hist->index,
HAL_REG_WRITE_HIST_SIZE);
record = &hal_soc->reg_wr_fail_hist->record[idx];
record->timestamp = qdf_get_log_timestamp();
record->reg_offset = offset;
record->write_val = wr_val;
record->read_val = rd_val;
}
static void hal_reg_write_fail_history_init(struct hal_soc *hal)
{
hal->reg_wr_fail_hist = &hal_reg_wr_hist;
qdf_atomic_set(&hal->reg_wr_fail_hist->index, -1);
}
#else
static void hal_reg_write_fail_history_init(struct hal_soc *hal)
{
}
#endif
/**
* hal_get_srng_ring_id() - get the ring id of a descriped ring
* @hal: hal_soc data structure
@@ -370,6 +403,7 @@ void *hal_attach(struct hif_opaque_softc *hif_handle, qdf_device_t qdf_dev)
hal->target_type = hal_get_target_type(hal_soc_to_hal_soc_handle(hal));
hal_target_based_configure(hal);
hal_reg_write_fail_history_init(hal);
/**
* Indicate Initialization of srngs to avoid force wake
* as umac power collapse is not enabled yet