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iwlwifi: trans: configure the scheduler enable register

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Currently the firmware is handling this, but that is wrong as it then
needs to assume a certain command queue, therefore this should be in
the driver; add it here so it can be removed from the firmware in the
future.

Signed-off-by: Avri Altman <avri.altman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Avri Altman 2014-07-24 19:25:10 +03:00 committed by Emmanuel Grumbach
parent 64ba893066
commit 002a9e2677
3 changed files with 15 additions and 0 deletions
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1
drivers/net/wireless/iwlwifi/iwl-prph.h
View File

@ -281,6 +281,7 @@
#define SCD_CHAINEXT_EN (SCD_BASE + 0x244)
#define SCD_AGGR_SEL (SCD_BASE + 0x248)
#define SCD_INTERRUPT_MASK (SCD_BASE + 0x108)
#define SCD_EN_CTRL (SCD_BASE + 0x254)
static inline unsigned int SCD_QUEUE_WRPTR(unsigned int chnl)
{

6
drivers/net/wireless/iwlwifi/iwl-scd.h
View File

@ -109,4 +109,10 @@ static inline void iwl_scd_deactivate_fifos(struct iwl_trans *trans)
{
iwl_write_prph(trans, SCD_TXFACT, 0);
}
static inline void iwl_scd_enable_set_active(struct iwl_trans *trans,
u32 value)
{
iwl_write_prph(trans, SCD_EN_CTRL, value);
}
#endif

8
drivers/net/wireless/iwlwifi/pcie/tx.c
View File

@ -1078,6 +1078,10 @@ void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, u16 ssn,
if (cfg) {
fifo = cfg->fifo;
/* Disable the scheduler prior configuring the cmd queue */
if (txq_id == trans_pcie->cmd_queue)
iwl_scd_enable_set_active(trans, 0);
/* Stop this Tx queue before configuring it */
iwl_scd_txq_set_inactive(trans, txq_id);
@ -1135,6 +1139,10 @@ void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, u16 ssn,
(cfg->fifo << SCD_QUEUE_STTS_REG_POS_TXF) |
(1 << SCD_QUEUE_STTS_REG_POS_WSL) |
SCD_QUEUE_STTS_REG_MSK);
/* enable the scheduler for this queue (only) */
if (txq_id == trans_pcie->cmd_queue)
iwl_scd_enable_set_active(trans, BIT(txq_id));
}
trans_pcie->txq[txq_id].active = true;