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iwlwifi: iwl-trans: move tfd to trans layer 

The tfd_* code is not directly related to the PCIe transport,
so move the structures it uses to the common iwl-trans.h header.

Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200924162105.a1a2ce2bce38.Ieada0fe087ebcc9bc84e22fc5abc9dba8914dd9f@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
This commit is contained in:
Mordechay Goodstein 2020-09-24 16:23:36 +03:00 committed by Luca Coelho
parent a26014e2de
commit 885375d0bb
6 changed files with 43 additions and 48 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/net/wireless/intel/iwlwifi/iwl-trans.c
View File

@ -127,6 +127,18 @@ struct iwl_trans *iwl_trans_alloc(unsigned int priv_size,
if (!trans->txqs.bc_pool)
return NULL;
}
if (trans->trans_cfg->use_tfh) {
trans->txqs.tfd.addr_size = 64;
trans->txqs.tfd.max_tbs = IWL_TFH_NUM_TBS;
trans->txqs.tfd.size = sizeof(struct iwl_tfh_tfd);
} else {
trans->txqs.tfd.addr_size = 36;
trans->txqs.tfd.max_tbs = IWL_NUM_OF_TBS;
trans->txqs.tfd.size = sizeof(struct iwl_tfd);
}
trans->max_skb_frags = IWL_TRANS_MAX_FRAGS(trans);
snprintf(trans->dev_cmd_pool_name, sizeof(trans->dev_cmd_pool_name),
"iwl_cmd_pool:%s", dev_name(trans->dev));
trans->dev_cmd_pool =

11
drivers/net/wireless/intel/iwlwifi/iwl-trans.h
View File

@ -215,6 +215,12 @@ struct iwl_device_tx_cmd {
*/
#define IWL_MAX_CMD_TBS_PER_TFD 2
/* We need 2 entries for the TX command and header, and another one might
* be needed for potential data in the SKB's head. The remaining ones can
* be used for frags.
*/
#define IWL_TRANS_MAX_FRAGS(trans) ((trans)->txqs.tfd.max_tbs - 3)
/**
* enum iwl_hcmd_dataflag - flag for each one of the chunks of the command
*
@ -922,6 +928,11 @@ struct iwl_trans_txqs {
unsigned int wdg_timeout;
} cmd;
struct {
u8 max_tbs;
u16 size;
u8 addr_size;
} tfd;
};
/**

12
drivers/net/wireless/intel/iwlwifi/pcie/internal.h
View File

@ -80,12 +80,6 @@
#include "iwl-op-mode.h"
#include "iwl-drv.h"
/* We need 2 entries for the TX command and header, and another one might
* be needed for potential data in the SKB's head. The remaining ones can
* be used for frags.
*/
#define IWL_PCIE_MAX_FRAGS(x) (x->max_tbs - 3)
/*
* RX related structures and functions
*/
@ -469,8 +463,6 @@ struct iwl_trans_pcie {
u8 def_rx_queue;
u8 n_no_reclaim_cmds;
u8 no_reclaim_cmds[MAX_NO_RECLAIM_CMDS];
u8 max_tbs;
u16 tfd_size;
u16 num_rx_bufs;
enum iwl_amsdu_size rx_buf_size;
@ -807,12 +799,10 @@ static inline u16 iwl_pcie_get_cmd_index(const struct iwl_txq *q, u32 index)
static inline void *iwl_pcie_get_tfd(struct iwl_trans *trans,
struct iwl_txq *txq, int idx)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
if (trans->trans_cfg->use_tfh)
idx = iwl_pcie_get_cmd_index(txq, idx);
return txq->tfds + trans_pcie->tfd_size * idx;
return txq->tfds + trans->txqs.tfd.size * idx;
}
static inline const char *queue_name(struct device *dev,

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

@ -2989,11 +2989,10 @@ static void iwl_trans_pcie_debugfs_cleanup(struct iwl_trans *trans)
static u32 iwl_trans_pcie_get_cmdlen(struct iwl_trans *trans, void *tfd)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
u32 cmdlen = 0;
int i;
for (i = 0; i < trans_pcie->max_tbs; i++)
for (i = 0; i < trans->txqs.tfd.max_tbs; i++)
cmdlen += iwl_pcie_tfd_tb_get_len(trans, tfd, i);
return cmdlen;
@ -3333,7 +3332,7 @@ static struct iwl_trans_dump_data
data = (void *)dump_data->data;
if (dump_mask & BIT(IWL_FW_ERROR_DUMP_TXCMD) && cmdq) {
u16 tfd_size = trans_pcie->tfd_size;
u16 tfd_size = trans->txqs.tfd.size;
data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXCMD);
txcmd = (void *)data->data;
@ -3555,19 +3554,9 @@ struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev,
trans_pcie->def_rx_queue = 0;
if (cfg_trans->use_tfh) {
addr_size = 64;
trans_pcie->max_tbs = IWL_TFH_NUM_TBS;
trans_pcie->tfd_size = sizeof(struct iwl_tfh_tfd);
} else {
addr_size = 36;
trans_pcie->max_tbs = IWL_NUM_OF_TBS;
trans_pcie->tfd_size = sizeof(struct iwl_tfd);
}
trans->max_skb_frags = IWL_PCIE_MAX_FRAGS(trans_pcie);
pci_set_master(pdev);
addr_size = trans->txqs.tfd.addr_size;
ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(addr_size));
if (!ret)
ret = pci_set_consistent_dma_mask(pdev,

13
drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c
View File

@ -158,13 +158,12 @@ static void iwl_pcie_gen2_tfd_unmap(struct iwl_trans *trans,
struct iwl_cmd_meta *meta,
struct iwl_tfh_tfd *tfd)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
int i, num_tbs;
/* Sanity check on number of chunks */
num_tbs = iwl_pcie_gen2_get_num_tbs(trans, tfd);
if (num_tbs > trans_pcie->max_tbs) {
if (num_tbs > trans->txqs.tfd.max_tbs) {
IWL_ERR(trans, "Too many chunks: %i\n", num_tbs);
return;
}
@ -219,7 +218,6 @@ static int iwl_pcie_gen2_set_tb(struct iwl_trans *trans,
struct iwl_tfh_tfd *tfd, dma_addr_t addr,
u16 len)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
int idx = iwl_pcie_gen2_get_num_tbs(trans, tfd);
struct iwl_tfh_tb *tb;
@ -239,9 +237,9 @@ static int iwl_pcie_gen2_set_tb(struct iwl_trans *trans,
tb = &tfd->tbs[idx];
/* Each TFD can point to a maximum max_tbs Tx buffers */
if (le16_to_cpu(tfd->num_tbs) >= trans_pcie->max_tbs) {
if (le16_to_cpu(tfd->num_tbs) >= trans->txqs.tfd.max_tbs) {
IWL_ERR(trans, "Error can not send more than %d chunks\n",
trans_pcie->max_tbs);
trans->txqs.tfd.max_tbs);
return -EINVAL;
}
@ -730,7 +728,7 @@ int iwl_trans_pcie_gen2_tx(struct iwl_trans *trans, struct sk_buff *skb,
return -EINVAL;
if (skb_is_nonlinear(skb) &&
skb_shinfo(skb)->nr_frags > IWL_PCIE_MAX_FRAGS(trans_pcie) &&
skb_shinfo(skb)->nr_frags > IWL_TRANS_MAX_FRAGS(trans) &&
__skb_linearize(skb))
return -ENOMEM;
@ -1210,13 +1208,12 @@ void iwl_pcie_gen2_txq_unmap(struct iwl_trans *trans, int txq_id)
void iwl_pcie_gen2_txq_free_memory(struct iwl_trans *trans,
struct iwl_txq *txq)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct device *dev = trans->dev;
/* De-alloc circular buffer of TFDs */
if (txq->tfds) {
dma_free_coherent(dev,
trans_pcie->tfd_size * txq->n_window,
trans->txqs.tfd.size * txq->n_window,
txq->tfds, txq->dma_addr);
dma_free_coherent(dev,
sizeof(*txq->first_tb_bufs) * txq->n_window,

26
drivers/net/wireless/intel/iwlwifi/pcie/tx.c
View File

@ -401,14 +401,13 @@ static void iwl_pcie_tfd_unmap(struct iwl_trans *trans,
struct iwl_cmd_meta *meta,
struct iwl_txq *txq, int index)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
int i, num_tbs;
void *tfd = iwl_pcie_get_tfd(trans, txq, index);
/* Sanity check on number of chunks */
num_tbs = iwl_pcie_tfd_get_num_tbs(trans, tfd);
if (num_tbs > trans_pcie->max_tbs) {
if (num_tbs > trans->txqs.tfd.max_tbs) {
IWL_ERR(trans, "Too many chunks: %i\n", num_tbs);
/* @todo issue fatal error, it is quite serious situation */
return;
@ -489,21 +488,20 @@ void iwl_pcie_txq_free_tfd(struct iwl_trans *trans, struct iwl_txq *txq)
static int iwl_pcie_txq_build_tfd(struct iwl_trans *trans, struct iwl_txq *txq,
dma_addr_t addr, u16 len, bool reset)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
void *tfd;
u32 num_tbs;
tfd = txq->tfds + trans_pcie->tfd_size * txq->write_ptr;
tfd = txq->tfds + trans->txqs.tfd.size * txq->write_ptr;
if (reset)
memset(tfd, 0, trans_pcie->tfd_size);
memset(tfd, 0, trans->txqs.tfd.size);
num_tbs = iwl_pcie_tfd_get_num_tbs(trans, tfd);
/* Each TFD can point to a maximum max_tbs Tx buffers */
if (num_tbs >= trans_pcie->max_tbs) {
if (num_tbs >= trans->txqs.tfd.max_tbs) {
IWL_ERR(trans, "Error can not send more than %d chunks\n",
trans_pcie->max_tbs);
trans->txqs.tfd.max_tbs);
return -EINVAL;
}
@ -519,8 +517,7 @@ static int iwl_pcie_txq_build_tfd(struct iwl_trans *trans, struct iwl_txq *txq,
int iwl_pcie_txq_alloc(struct iwl_trans *trans, struct iwl_txq *txq,
int slots_num, bool cmd_queue)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
size_t tfd_sz = trans_pcie->tfd_size *
size_t tfd_sz = trans->txqs.tfd.size *
trans->trans_cfg->base_params->max_tfd_queue_size;
size_t tb0_buf_sz;
int i;
@ -529,7 +526,7 @@ int iwl_pcie_txq_alloc(struct iwl_trans *trans, struct iwl_txq *txq,
return -EINVAL;
if (trans->trans_cfg->use_tfh)
tfd_sz = trans_pcie->tfd_size * slots_num;
tfd_sz = trans->txqs.tfd.size * slots_num;
timer_setup(&txq->stuck_timer, iwl_pcie_txq_stuck_timer, 0);
txq->trans = trans;
@ -708,7 +705,6 @@ static void iwl_pcie_txq_unmap(struct iwl_trans *trans, int txq_id)
*/
static void iwl_pcie_txq_free(struct iwl_trans *trans, int txq_id)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct iwl_txq *txq = trans->txqs.txq[txq_id];
struct device *dev = trans->dev;
int i;
@ -728,7 +724,7 @@ static void iwl_pcie_txq_free(struct iwl_trans *trans, int txq_id)
/* De-alloc circular buffer of TFDs */
if (txq->tfds) {
dma_free_coherent(dev,
trans_pcie->tfd_size *
trans->txqs.tfd.size *
trans->trans_cfg->base_params->max_tfd_queue_size,
txq->tfds, txq->dma_addr);
txq->dma_addr = 0;
@ -2143,7 +2139,7 @@ static int iwl_fill_data_tbs_amsdu(struct iwl_trans *trans, struct sk_buff *skb,
trace_iwlwifi_dev_tx(trans->dev, skb,
iwl_pcie_get_tfd(trans, txq, txq->write_ptr),
trans_pcie->tfd_size,
trans->txqs.tfd.size,
&dev_cmd->hdr, IWL_FIRST_TB_SIZE + tb1_len, 0);
ip_hdrlen = skb_transport_header(skb) - skb_network_header(skb);
@ -2352,7 +2348,7 @@ int iwl_trans_pcie_tx(struct iwl_trans *trans, struct sk_buff *skb,
}
if (skb_is_nonlinear(skb) &&
skb_shinfo(skb)->nr_frags > IWL_PCIE_MAX_FRAGS(trans_pcie) &&
skb_shinfo(skb)->nr_frags > IWL_TRANS_MAX_FRAGS(trans) &&
__skb_linearize(skb))
return -ENOMEM;
@ -2454,7 +2450,7 @@ int iwl_trans_pcie_tx(struct iwl_trans *trans, struct sk_buff *skb,
trace_iwlwifi_dev_tx(trans->dev, skb,
iwl_pcie_get_tfd(trans, txq,
txq->write_ptr),
trans_pcie->tfd_size,
trans->txqs.tfd.size,
&dev_cmd->hdr, IWL_FIRST_TB_SIZE + tb1_len,
hdr_len);