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iwlwifi: trans: add a new op for getting DMA data

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Op mode will need this data in order to feed FW with it.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Sara Sharon 2018-02-05 12:37:05 +02:00 committed by Luca Coelho
parent 1b4bbe8bf2
commit 92536c9615
2 changed files with 43 additions and 0 deletions
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26
drivers/net/wireless/intel/iwlwifi/iwl-trans.h
View File

@ -439,6 +439,20 @@ struct iwl_trans_txq_scd_cfg {
int frame_limit;
};
/**
* struct iwl_trans_rxq_dma_data - RX queue DMA data
* @fr_bd_cb: DMA address of free BD cyclic buffer
* @fr_bd_wid: Initial write index of the free BD cyclic buffer
* @urbd_stts_wrptr: DMA address of urbd_stts_wrptr
* @ur_bd_cb: DMA address of used BD cyclic buffer
*/
struct iwl_trans_rxq_dma_data {
u64 fr_bd_cb;
u32 fr_bd_wid;
u64 urbd_stts_wrptr;
u64 ur_bd_cb;
};
/**
* struct iwl_trans_ops - transport specific operations
*
@ -559,6 +573,8 @@ struct iwl_trans_ops {
int cmd_id, int size,
unsigned int queue_wdg_timeout);
void (*txq_free)(struct iwl_trans *trans, int queue);
int (*rxq_dma_data)(struct iwl_trans *trans, int queue,
struct iwl_trans_rxq_dma_data *data);
void (*txq_set_shared_mode)(struct iwl_trans *trans, u32 txq_id,
bool shared);
@ -947,6 +963,16 @@ iwl_trans_txq_enable_cfg(struct iwl_trans *trans, int queue, u16 ssn,
cfg, queue_wdg_timeout);
}
static inline int
iwl_trans_get_rxq_dma_data(struct iwl_trans *trans, int queue,
struct iwl_trans_rxq_dma_data *data)
{
if (WARN_ON_ONCE(!trans->ops->rxq_dma_data))
return -ENOTSUPP;
return trans->ops->rxq_dma_data(trans, queue, data);
}
static inline void
iwl_trans_txq_free(struct iwl_trans *trans, int queue)
{

17
drivers/net/wireless/intel/iwlwifi/pcie/trans.c
View File

@ -2265,6 +2265,22 @@ void iwl_trans_pcie_log_scd_error(struct iwl_trans *trans, struct iwl_txq *txq)
iwl_read_direct32(trans, FH_TX_TRB_REG(fifo)));
}
static int iwl_trans_pcie_rxq_dma_data(struct iwl_trans *trans, int queue,
struct iwl_trans_rxq_dma_data *data)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
if (queue >= trans->num_rx_queues || !trans_pcie->rxq)
return -EINVAL;
data->fr_bd_cb = trans_pcie->rxq[queue].bd_dma;
data->urbd_stts_wrptr = trans_pcie->rxq[queue].rb_stts_dma;
data->ur_bd_cb = trans_pcie->rxq[queue].used_bd_dma;
data->fr_bd_wid = 0;
return 0;
}
static int iwl_trans_pcie_wait_txq_empty(struct iwl_trans *trans, int txq_idx)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
@ -3212,6 +3228,7 @@ static const struct iwl_trans_ops trans_ops_pcie_gen2 = {
.txq_alloc = iwl_trans_pcie_dyn_txq_alloc,
.txq_free = iwl_trans_pcie_dyn_txq_free,
.wait_txq_empty = iwl_trans_pcie_wait_txq_empty,
.rxq_dma_data = iwl_trans_pcie_rxq_dma_data,
};
struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev,