diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2012-10-26 01:08:27 +0400 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2012-11-05 19:12:25 +0400 |
| commit | adca1235cccacee91beb640a044e51b1c457b1ea (patch) | |
| tree | 948ae97e253d7c13a8bd337da29d65333b7b4d25 /drivers/net/wireless/iwlwifi/pcie/trans.c | |
| parent | e2b1930e6fd9aaa72cc44519b257ae71a1c2e29f (diff) | |
| download | linux-adca1235cccacee91beb640a044e51b1c457b1ea.tar.xz | |
iwlwifi: check the SCD conf from ALIVE response
The ALIVE response of new fw inclues the base address of
the SCD in SRAM. Until we read it from a prph register,
which was set by the fw. Since the fw might well stop
updating the prph register, add a WARN when there is an
inconsitency between the ALIVE response and the register
to catch any change in the behavior.
Reviewed-by: Gregory Greenman <gregory.greenman@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/pcie/trans.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/trans.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c index 288d2297f77d..0703da892e59 100644 --- a/drivers/net/wireless/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/iwlwifi/pcie/trans.c @@ -1079,7 +1079,7 @@ static void iwl_trans_txq_set_sched(struct iwl_trans *trans, u32 mask) iwl_write_prph(trans, SCD_TXFACT, mask); } -static void iwl_tx_start(struct iwl_trans *trans) +static void iwl_tx_start(struct iwl_trans *trans, u32 scd_base_addr) { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); u32 a; @@ -1092,6 +1092,10 @@ static void iwl_tx_start(struct iwl_trans *trans) trans_pcie->scd_base_addr = iwl_read_prph(trans, SCD_SRAM_BASE_ADDR); + + WARN_ON(scd_base_addr != 0 && + scd_base_addr != trans_pcie->scd_base_addr); + a = trans_pcie->scd_base_addr + SCD_CONTEXT_MEM_LOWER_BOUND; /* reset conext data memory */ for (; a < trans_pcie->scd_base_addr + SCD_CONTEXT_MEM_UPPER_BOUND; @@ -1137,10 +1141,10 @@ static void iwl_tx_start(struct iwl_trans *trans) APMG_PCIDEV_STT_VAL_L1_ACT_DIS); } -static void iwl_trans_pcie_fw_alive(struct iwl_trans *trans) +static void iwl_trans_pcie_fw_alive(struct iwl_trans *trans, u32 scd_addr) { iwl_reset_ict(trans); - iwl_tx_start(trans); + iwl_tx_start(trans, scd_addr); } /** |