From: Luca Coelho <luca@coelho.fi>
To: kvalo@codeaurora.org
Cc: linux-wireless@vger.kernel.org,
Sara Sharon <sara.sharon@intel.com>,
Luca Coelho <luciano.coelho@intel.com>
Subject: [PATCH 08/25] iwlwifi: pcie: assign and access a000 TFD & TBs
Date: Thu, 15 Sep 2016 21:11:14 +0300 [thread overview]
Message-ID: <20160915181131.32213-8-luca@coelho.fi> (raw)
In-Reply-To: <1473962425.5664.41.camel@coelho.fi>
From: Sara Sharon <sara.sharon@intel.com>
Previous patch introduced the new formats. This patch
allocates the new structures and adjusts code accordingly.
Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
---
drivers/net/wireless/intel/iwlwifi/pcie/internal.h | 19 ++-
drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 16 ++-
drivers/net/wireless/intel/iwlwifi/pcie/tx.c | 141 ++++++++++++++-------
3 files changed, 120 insertions(+), 56 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h
index b9dc82b..d185692 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h
@@ -280,7 +280,7 @@ struct iwl_pcie_first_tb_buf {
*/
struct iwl_txq {
struct iwl_queue q;
- struct iwl_tfd *tfds;
+ void *tfds;
struct iwl_pcie_first_tb_buf *first_tb_bufs;
dma_addr_t first_tb_dma;
struct iwl_pcie_txq_entry *entries;
@@ -393,6 +393,7 @@ struct iwl_trans_pcie {
u8 n_no_reclaim_cmds;
u8 no_reclaim_cmds[MAX_NO_RECLAIM_CMDS];
u8 max_tbs;
+ u16 tfd_size;
enum iwl_amsdu_size rx_buf_size;
bool bc_table_dword;
@@ -489,9 +490,21 @@ void iwl_trans_pcie_reclaim(struct iwl_trans *trans, int txq_id, int ssn,
struct sk_buff_head *skbs);
void iwl_trans_pcie_tx_reset(struct iwl_trans *trans);
-static inline u16 iwl_pcie_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
+static inline u16 iwl_pcie_tfd_tb_get_len(struct iwl_trans *trans, void *tfd,
+ u8 idx)
{
- struct iwl_tfd_tb *tb = &tfd->tbs[idx];
+ struct iwl_tfd *tfd_fh;
+ struct iwl_tfd_tb *tb;
+
+ if (trans->cfg->use_tfh) {
+ struct iwl_tfh_tfd *tfd_fh = (void *)tfd;
+ struct iwl_tfh_tb *tb = &tfd_fh->tbs[idx];
+
+ return le16_to_cpu(tb->tb_len);
+ }
+
+ tfd_fh = (void *)tfd;
+ tb = &tfd_fh->tbs[idx];
return le16_to_cpu(tb->hi_n_len) >> 4;
}
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
index 21b1be1..e908bb8 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
@@ -2437,15 +2437,14 @@ err:
}
#endif /*CONFIG_IWLWIFI_DEBUGFS */
-static u32 iwl_trans_pcie_get_cmdlen(struct iwl_trans *trans,
- struct iwl_tfd *tfd)
+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++)
- cmdlen += iwl_pcie_tfd_tb_get_len(tfd, i);
+ cmdlen += iwl_pcie_tfd_tb_get_len(trans, tfd, i);
return cmdlen;
}
@@ -2733,7 +2732,8 @@ static struct iwl_trans_dump_data
u8 idx = get_cmd_index(&cmdq->q, ptr);
u32 caplen, cmdlen;
- cmdlen = iwl_trans_pcie_get_cmdlen(trans, &cmdq->tfds[ptr]);
+ cmdlen = iwl_trans_pcie_get_cmdlen(trans, cmdq->tfds +
+ trans_pcie->tfd_size * ptr);
caplen = min_t(u32, TFD_MAX_PAYLOAD_SIZE, cmdlen);
if (cmdlen) {
@@ -2876,10 +2876,14 @@ struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev,
else
addr_size = 36;
- if (cfg->use_tfh)
+ if (cfg->use_tfh) {
trans_pcie->max_tbs = IWL_TFH_NUM_TBS;
- else
+ trans_pcie->tfd_size = sizeof(struct iwl_tfh_tb);
+
+ } else {
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);
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c
index 57a657a..f893ee1 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c
@@ -312,11 +312,30 @@ void iwl_pcie_txq_check_wrptrs(struct iwl_trans *trans)
}
}
-static inline dma_addr_t iwl_pcie_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
+static inline void *iwl_pcie_get_tfd(struct iwl_trans_pcie *trans_pcie,
+ struct iwl_txq *txq, int idx)
{
- struct iwl_tfd_tb *tb = &tfd->tbs[idx];
+ return txq->tfds + trans_pcie->tfd_size * idx;
+}
+
+static inline dma_addr_t iwl_pcie_tfd_tb_get_addr(struct iwl_trans *trans,
+ void *tfd, u8 idx)
+{
+ struct iwl_tfd *tfd_fh;
+ struct iwl_tfd_tb *tb;
+ dma_addr_t addr;
+
+ if (trans->cfg->use_tfh) {
+ struct iwl_tfh_tfd *tfd_fh = (void *)tfd;
+ struct iwl_tfh_tb *tb = &tfd_fh->tbs[idx];
+
+ return (dma_addr_t)(le64_to_cpu(tb->addr));
+ }
+
+ tfd_fh = (void *)tfd;
+ tb = &tfd_fh->tbs[idx];
+ addr = get_unaligned_le32(&tb->lo);
- dma_addr_t addr = get_unaligned_le32(&tb->lo);
if (sizeof(dma_addr_t) > sizeof(u32))
addr |=
((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
@@ -324,35 +343,57 @@ static inline dma_addr_t iwl_pcie_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
return addr;
}
-static inline void iwl_pcie_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
- dma_addr_t addr, u16 len)
+static inline void iwl_pcie_tfd_set_tb(struct iwl_trans *trans, void *tfd,
+ u8 idx, dma_addr_t addr, u16 len)
{
- struct iwl_tfd_tb *tb = &tfd->tbs[idx];
- u16 hi_n_len = len << 4;
+ if (trans->cfg->use_tfh) {
+ struct iwl_tfh_tfd *tfd_fh = (void *)tfd;
+ struct iwl_tfh_tb *tb = &tfd_fh->tbs[idx];
- put_unaligned_le32(addr, &tb->lo);
- if (sizeof(dma_addr_t) > sizeof(u32))
- hi_n_len |= ((addr >> 16) >> 16) & 0xF;
+ put_unaligned_le64(addr, &tb->addr);
+ tb->tb_len = cpu_to_le16(len);
+
+ tfd_fh->num_tbs = cpu_to_le16(idx + 1);
+ } else {
+ struct iwl_tfd *tfd_fh = (void *)tfd;
+ struct iwl_tfd_tb *tb = &tfd_fh->tbs[idx];
- tb->hi_n_len = cpu_to_le16(hi_n_len);
+ u16 hi_n_len = len << 4;
- tfd->num_tbs = idx + 1;
+ put_unaligned_le32(addr, &tb->lo);
+ if (sizeof(dma_addr_t) > sizeof(u32))
+ hi_n_len |= ((addr >> 16) >> 16) & 0xF;
+
+ tb->hi_n_len = cpu_to_le16(hi_n_len);
+
+ tfd_fh->num_tbs = idx + 1;
+ }
}
-static inline u8 iwl_pcie_tfd_get_num_tbs(struct iwl_tfd *tfd)
+static inline u8 iwl_pcie_tfd_get_num_tbs(struct iwl_trans *trans, void *tfd)
{
- return tfd->num_tbs & 0x1f;
+ struct iwl_tfd *tfd_fh;
+
+ if (trans->cfg->use_tfh) {
+ struct iwl_tfh_tfd *tfd_fh = (void *)tfd;
+
+ return le16_to_cpu(tfd_fh->num_tbs) & 0x1f;
+ }
+
+ tfd_fh = (void *)tfd;
+ return tfd_fh->num_tbs & 0x1f;
}
static void iwl_pcie_tfd_unmap(struct iwl_trans *trans,
struct iwl_cmd_meta *meta,
- struct iwl_tfd *tfd)
+ 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_pcie, txq, index);
/* Sanity check on number of chunks */
- num_tbs = iwl_pcie_tfd_get_num_tbs(tfd);
+ num_tbs = iwl_pcie_tfd_get_num_tbs(trans, tfd);
if (num_tbs >= trans_pcie->max_tbs) {
IWL_ERR(trans, "Too many chunks: %i\n", num_tbs);
@@ -365,16 +406,28 @@ static void iwl_pcie_tfd_unmap(struct iwl_trans *trans,
for (i = 1; i < num_tbs; i++) {
if (meta->tbs & BIT(i))
dma_unmap_page(trans->dev,
- iwl_pcie_tfd_tb_get_addr(tfd, i),
- iwl_pcie_tfd_tb_get_len(tfd, i),
+ iwl_pcie_tfd_tb_get_addr(trans, tfd, i),
+ iwl_pcie_tfd_tb_get_len(trans, tfd, i),
DMA_TO_DEVICE);
else
dma_unmap_single(trans->dev,
- iwl_pcie_tfd_tb_get_addr(tfd, i),
- iwl_pcie_tfd_tb_get_len(tfd, i),
+ iwl_pcie_tfd_tb_get_addr(trans, tfd,
+ i),
+ iwl_pcie_tfd_tb_get_len(trans, tfd,
+ i),
DMA_TO_DEVICE);
}
- tfd->num_tbs = 0;
+
+ if (trans->cfg->use_tfh) {
+ struct iwl_tfh_tfd *tfd_fh = (void *)tfd;
+
+ tfd_fh->num_tbs = 0;
+ } else {
+ struct iwl_tfd *tfd_fh = (void *)tfd;
+
+ tfd_fh->num_tbs = 0;
+ }
+
}
/*
@@ -388,8 +441,6 @@ static void iwl_pcie_tfd_unmap(struct iwl_trans *trans,
*/
static void iwl_pcie_txq_free_tfd(struct iwl_trans *trans, struct iwl_txq *txq)
{
- struct iwl_tfd *tfd_tmp = txq->tfds;
-
/* rd_ptr is bounded by TFD_QUEUE_SIZE_MAX and
* idx is bounded by n_window
*/
@@ -401,7 +452,7 @@ static void iwl_pcie_txq_free_tfd(struct iwl_trans *trans, struct iwl_txq *txq)
/* We have only q->n_window txq->entries, but we use
* TFD_QUEUE_SIZE_MAX tfds
*/
- iwl_pcie_tfd_unmap(trans, &txq->entries[idx].meta, &tfd_tmp[rd_ptr]);
+ iwl_pcie_tfd_unmap(trans, &txq->entries[idx].meta, txq, rd_ptr);
/* free SKB */
if (txq->entries) {
@@ -425,19 +476,18 @@ static int iwl_pcie_txq_build_tfd(struct iwl_trans *trans, struct iwl_txq *txq,
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct iwl_queue *q;
- struct iwl_tfd *tfd, *tfd_tmp;
+ void *tfd;
u32 num_tbs;
q = &txq->q;
- tfd_tmp = txq->tfds;
- tfd = &tfd_tmp[q->write_ptr];
+ tfd = txq->tfds + trans_pcie->tfd_size * q->write_ptr;
if (reset)
- memset(tfd, 0, sizeof(*tfd));
+ memset(tfd, 0, trans_pcie->tfd_size);
- num_tbs = iwl_pcie_tfd_get_num_tbs(tfd);
+ num_tbs = iwl_pcie_tfd_get_num_tbs(trans, tfd);
- /* Each TFD can point to a maximum 20 Tx buffers */
+ /* Each TFD can point to a maximum max_tbs Tx buffers */
if (num_tbs >= trans_pcie->max_tbs) {
IWL_ERR(trans, "Error can not send more than %d chunks\n",
trans_pcie->max_tbs);
@@ -448,7 +498,7 @@ static int iwl_pcie_txq_build_tfd(struct iwl_trans *trans, struct iwl_txq *txq,
"Unaligned address = %llx\n", (unsigned long long)addr))
return -EINVAL;
- iwl_pcie_tfd_set_tb(tfd, num_tbs, addr, len);
+ iwl_pcie_tfd_set_tb(trans, tfd, num_tbs, addr, len);
return num_tbs;
}
@@ -458,7 +508,7 @@ static int iwl_pcie_txq_alloc(struct iwl_trans *trans,
u32 txq_id)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
- size_t tfd_sz = sizeof(struct iwl_tfd) * TFD_QUEUE_SIZE_MAX;
+ size_t tfd_sz = trans_pcie->tfd_size * TFD_QUEUE_SIZE_MAX;
size_t tb0_buf_sz;
int i;
@@ -672,7 +722,7 @@ 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,
- sizeof(struct iwl_tfd) * TFD_QUEUE_SIZE_MAX,
+ trans_pcie->tfd_size * TFD_QUEUE_SIZE_MAX,
txq->tfds, txq->q.dma_addr);
txq->q.dma_addr = 0;
txq->tfds = NULL;
@@ -1616,8 +1666,7 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans,
copy_size - tb0_size,
DMA_TO_DEVICE);
if (dma_mapping_error(trans->dev, phys_addr)) {
- iwl_pcie_tfd_unmap(trans, out_meta,
- &txq->tfds[q->write_ptr]);
+ iwl_pcie_tfd_unmap(trans, out_meta, txq, q->write_ptr);
idx = -ENOMEM;
goto out;
}
@@ -1640,8 +1689,7 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans,
phys_addr = dma_map_single(trans->dev, (void *)data,
cmdlen[i], DMA_TO_DEVICE);
if (dma_mapping_error(trans->dev, phys_addr)) {
- iwl_pcie_tfd_unmap(trans, out_meta,
- &txq->tfds[q->write_ptr]);
+ iwl_pcie_tfd_unmap(trans, out_meta, txq, q->write_ptr);
idx = -ENOMEM;
goto out;
}
@@ -1721,7 +1769,7 @@ void iwl_pcie_hcmd_complete(struct iwl_trans *trans,
meta = &txq->entries[cmd_index].meta;
cmd_id = iwl_cmd_id(cmd->hdr.cmd, group_id, 0);
- iwl_pcie_tfd_unmap(trans, meta, &txq->tfds[index]);
+ iwl_pcie_tfd_unmap(trans, meta, txq, index);
/* Input error checking is done when commands are added to queue. */
if (meta->flags & CMD_WANT_SKB) {
@@ -1919,6 +1967,7 @@ static int iwl_fill_data_tbs(struct iwl_trans *trans, struct sk_buff *skb,
struct iwl_cmd_meta *out_meta,
struct iwl_device_cmd *dev_cmd, u16 tb1_len)
{
+ struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct iwl_queue *q = &txq->q;
u16 tb2_len;
int i;
@@ -1934,8 +1983,7 @@ static int iwl_fill_data_tbs(struct iwl_trans *trans, struct sk_buff *skb,
skb->data + hdr_len,
tb2_len, DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(trans->dev, tb2_phys))) {
- iwl_pcie_tfd_unmap(trans, out_meta,
- &txq->tfds[q->write_ptr]);
+ iwl_pcie_tfd_unmap(trans, out_meta, txq, q->write_ptr);
return -EINVAL;
}
iwl_pcie_txq_build_tfd(trans, txq, tb2_phys, tb2_len, false);
@@ -1954,8 +2002,7 @@ static int iwl_fill_data_tbs(struct iwl_trans *trans, struct sk_buff *skb,
skb_frag_size(frag), DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(trans->dev, tb_phys))) {
- iwl_pcie_tfd_unmap(trans, out_meta,
- &txq->tfds[q->write_ptr]);
+ iwl_pcie_tfd_unmap(trans, out_meta, txq, q->write_ptr);
return -EINVAL;
}
tb_idx = iwl_pcie_txq_build_tfd(trans, txq, tb_phys,
@@ -1965,8 +2012,8 @@ static int iwl_fill_data_tbs(struct iwl_trans *trans, struct sk_buff *skb,
}
trace_iwlwifi_dev_tx(trans->dev, skb,
- &txq->tfds[txq->q.write_ptr],
- sizeof(struct iwl_tfd),
+ iwl_pcie_get_tfd(trans_pcie, txq, q->write_ptr),
+ trans_pcie->tfd_size,
&dev_cmd->hdr, IWL_FIRST_TB_SIZE + tb1_len,
skb->data + hdr_len, tb2_len);
trace_iwlwifi_dev_tx_data(trans->dev, skb,
@@ -2041,8 +2088,8 @@ static int iwl_fill_data_tbs_amsdu(struct iwl_trans *trans, struct sk_buff *skb,
IEEE80211_CCMP_HDR_LEN : 0;
trace_iwlwifi_dev_tx(trans->dev, skb,
- &txq->tfds[txq->q.write_ptr],
- sizeof(struct iwl_tfd),
+ iwl_pcie_get_tfd(trans_pcie, txq, q->write_ptr),
+ trans_pcie->tfd_size,
&dev_cmd->hdr, IWL_FIRST_TB_SIZE + tb1_len,
NULL, 0);
@@ -2198,7 +2245,7 @@ static int iwl_fill_data_tbs_amsdu(struct iwl_trans *trans, struct sk_buff *skb,
return 0;
out_unmap:
- iwl_pcie_tfd_unmap(trans, out_meta, &txq->tfds[q->write_ptr]);
+ iwl_pcie_tfd_unmap(trans, out_meta, txq, q->write_ptr);
return ret;
}
#else /* CONFIG_INET */
--
2.9.3
next prev parent reply other threads:[~2016-09-15 18:11 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-15 18:00 pull-request: iwlwifi-next 2016-09-15 Luca Coelho
2016-09-15 18:11 ` [PATCH 01/25] iwlwifi: mvm: call a different txq_enable function Luca Coelho
2016-09-15 18:11 ` [PATCH 02/25] iwlwifi: mvm: don't free queue after delba in dqa Luca Coelho
2016-09-15 18:11 ` [PATCH 03/25] iwlwifi: fix semicolon.cocci warnings Luca Coelho
2016-09-15 18:11 ` [PATCH 04/25] iwlwifi: pcie: introduce new tfd and tb formats Luca Coelho
2016-09-15 18:11 ` [PATCH 05/25] iwlwifi: mvm: remove dump of locked registers Luca Coelho
2016-09-15 18:11 ` [PATCH 06/25] iwlwifi: mvm: support new shared memory config API Luca Coelho
2016-09-15 18:11 ` [PATCH 07/25] iwlwifi: introduce trans API to get byte count table Luca Coelho
2016-09-15 18:11 ` Luca Coelho [this message]
2016-09-15 18:11 ` [PATCH 09/25] iwlwifi: change byte count table for a000 devices Luca Coelho
2016-09-15 18:11 ` [PATCH 10/25] iwlwifi: pcie: merge iwl_queue and iwl_txq Luca Coelho
2016-09-15 18:11 ` [PATCH 11/25] iwlwifi: mvm: support new BA notification response Luca Coelho
2016-09-15 18:11 ` [PATCH 12/25] iwlwifi: pcie: Configure shared interrupt vector in MSIX mode Luca Coelho
2016-09-15 18:11 ` [PATCH 13/25] iwlwifi: mvm: fix pending frames tracking on tx resp Luca Coelho
2016-09-15 18:11 ` [PATCH 14/25] iwlwifi: mvm: free reserved queue on STA removal Luca Coelho
2016-09-15 18:11 ` [PATCH 15/25] iwlwifi: pcie: Set affinity mask for rx interrupt vectors per cpu Luca Coelho
2016-09-15 18:11 ` [PATCH 16/25] iwlwifi: add the new 9560 series Luca Coelho
2016-09-15 18:11 ` [PATCH 17/25] iwlwifi: add the new 8275 series Luca Coelho
2016-09-15 18:11 ` [PATCH 18/25] iwlwifi: mvm: use setup_timer instead of init_timer and data fields Luca Coelho
2016-09-15 18:11 ` [PATCH 19/25] iwlwifi: pcie: change indentation of iwl_pcie_set_interrupt_capa() Luca Coelho
2016-09-15 18:11 ` [PATCH 20/25] iwlwifi: mvm: bump max API to 26 Luca Coelho
2016-09-15 18:11 ` [PATCH 21/25] iwlwifi: pcie: replace possible_cpus() with online_cpus() in MSIX mode Luca Coelho
2016-09-15 18:11 ` [PATCH 22/25] iwlwifi: unify iwl_get_ucode_image() implementations Luca Coelho
2016-09-15 18:11 ` [PATCH 23/25] iwlwifi: mvm: make RSS RX more robust Luca Coelho
2016-09-15 18:11 ` [PATCH 24/25] iwlwifi: mvm: remove pointless _bh from spinlock in timer Luca Coelho
2016-09-15 18:11 ` [PATCH 25/25] iwlwifi: mvm: tighten BAID range check Luca Coelho
2016-09-16 4:36 ` pull-request: iwlwifi-next 2016-09-15 Luca Coelho
2016-09-16 7:53 ` pull-request: iwlwifi-next 2016-09-15-2 Luca Coelho
2016-09-16 7:55 ` [PATCH v2 07/25] iwlwifi: introduce trans API to get byte count table Luca Coelho
2016-09-17 15:12 ` pull-request: iwlwifi-next 2016-09-15-2 Kalle Valo
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