github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-31 18:43:33 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

iwlwifi: dump host monitor data when NIC doesn't init

Browse Source 
If the NIC cannot be initialized, dump host monitor data
so we can analyze properly why it didn't initialize.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211024165252.21c90ba4fa5f.I2a30f62aa4685dc7623d3c69838909833c3f435c@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Johannes Berg 2021-10-24 16:55:06 +03:00 committed by Luca Coelho
parent 3f7320428f
commit c66ab56ad9
1 changed files with 45 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
drivers/net/wireless/intel/iwlwifi/iwl-io.c
View File

@ -398,6 +398,47 @@ int iwl_dump_fh(struct iwl_trans *trans, char **buf)
return 0;
}
#define IWL_HOST_MON_BLOCK_PEMON 0x00
#define IWL_HOST_MON_BLOCK_HIPM 0x22
#define IWL_HOST_MON_BLOCK_PEMON_VEC0 0x00
#define IWL_HOST_MON_BLOCK_PEMON_VEC1 0x01
#define IWL_HOST_MON_BLOCK_PEMON_WFPM 0x06
static void iwl_dump_host_monitor_block(struct iwl_trans *trans,
u32 block, u32 vec, u32 iter)
{
int i;
IWL_ERR(trans, "Host monitor block 0x%x vector 0x%x\n", block, vec);
iwl_write32(trans, CSR_MONITOR_CFG_REG, (block << 8) | vec);
for (i = 0; i < iter; i++)
IWL_ERR(trans, " value [iter %d]: 0x%08x\n",
i, iwl_read32(trans, CSR_MONITOR_STATUS_REG));
}
static void iwl_dump_host_monitor(struct iwl_trans *trans)
{
switch (trans->trans_cfg->device_family) {
case IWL_DEVICE_FAMILY_22000:
case IWL_DEVICE_FAMILY_AX210:
IWL_ERR(trans, "CSR_RESET = 0x%x\n",
iwl_read32(trans, CSR_RESET));
iwl_dump_host_monitor_block(trans, IWL_HOST_MON_BLOCK_PEMON,
IWL_HOST_MON_BLOCK_PEMON_VEC0, 15);
iwl_dump_host_monitor_block(trans, IWL_HOST_MON_BLOCK_PEMON,
IWL_HOST_MON_BLOCK_PEMON_VEC1, 15);
iwl_dump_host_monitor_block(trans, IWL_HOST_MON_BLOCK_PEMON,
IWL_HOST_MON_BLOCK_PEMON_WFPM, 15);
iwl_dump_host_monitor_block(trans, IWL_HOST_MON_BLOCK_HIPM,
IWL_HOST_MON_BLOCK_PEMON_VEC0, 1);
break;
default:
/* not supported yet */
return;
}
}
int iwl_finish_nic_init(struct iwl_trans *trans)
{
const struct iwl_cfg_trans_params *cfg_trans = trans->trans_cfg;
@ -433,9 +474,12 @@ int iwl_finish_nic_init(struct iwl_trans *trans)
* and accesses to uCode SRAM.
*/
err = iwl_poll_bit(trans, CSR_GP_CNTRL, poll_ready, poll_ready, 25000);
if (err < 0)
if (err < 0) {
IWL_DEBUG_INFO(trans, "Failed to wake NIC\n");
iwl_dump_host_monitor(trans);
}
if (cfg_trans->bisr_workaround) {
/* ensure BISR shift has finished */
udelay(200);