1 files changed, 45 insertions, 188 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c
index b0ee86c62685..7d2b6e11f73e 100644
--- a/drivers/net/wireless/iwlwifi/iwl-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-tx.c
@@ -1,6 +1,6 @@
 /******************************************************************************
  *
- * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
+ * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
  *
  * Portions of this file are derived from the ipw3945 project, as well
  * as portions of the ieee80211 subsystem header files.
@@ -76,116 +76,6 @@ static inline void iwl_free_dma_ptr(struct iwl_priv *priv,
 	memset(ptr, 0, sizeof(*ptr));
 }
 
-static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
-{
-	struct iwl_tfd_tb *tb = &tfd->tbs[idx];
-
-	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;
-
-	return addr;
-}
-
-static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
-{
-	struct iwl_tfd_tb *tb = &tfd->tbs[idx];
-
-	return le16_to_cpu(tb->hi_n_len) >> 4;
-}
-
-static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
-				  dma_addr_t addr, u16 len)
-{
-	struct iwl_tfd_tb *tb = &tfd->tbs[idx];
-	u16 hi_n_len = len << 4;
-
-	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->num_tbs = idx + 1;
-}
-
-static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
-{
-	return tfd->num_tbs & 0x1f;
-}
-
-/**
- * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
- * @priv - driver private data
- * @txq - tx queue
- *
- * Does NOT advance any TFD circular buffer read/write indexes
- * Does NOT free the TFD itself (which is within circular buffer)
- */
-static void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
-{
-	struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)&txq->tfds[0];
-	struct iwl_tfd *tfd;
-	struct pci_dev *dev = priv->pci_dev;
-	int index = txq->q.read_ptr;
-	int i;
-	int num_tbs;
-
-	tfd = &tfd_tmp[index];
-
-	/* Sanity check on number of chunks */
-	num_tbs = iwl_tfd_get_num_tbs(tfd);
-
-	if (num_tbs >= IWL_NUM_OF_TBS) {
-		IWL_ERROR("Too many chunks: %i\n", num_tbs);
-		/* @todo issue fatal error, it is quite serious situation */
-		return;
-	}
-
-	/* Unmap tx_cmd */
-	if (num_tbs)
-		pci_unmap_single(dev,
-				pci_unmap_addr(&txq->cmd[index]->meta, mapping),
-				pci_unmap_len(&txq->cmd[index]->meta, len),
-				PCI_DMA_TODEVICE);
-
-	/* Unmap chunks, if any. */
-	for (i = 1; i < num_tbs; i++) {
-		pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
-				iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
-
-		if (txq->txb) {
-			dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
-			txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
-		}
-	}
-}
-
-static int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
-					struct iwl_tfd *tfd,
-					dma_addr_t addr, u16 len)
-{
-
-	u32 num_tbs = iwl_tfd_get_num_tbs(tfd);
-
-	/* Each TFD can point to a maximum 20 Tx buffers */
-	if (num_tbs >= IWL_NUM_OF_TBS) {
-		IWL_ERROR("Error can not send more than %d chunks\n",
-			  IWL_NUM_OF_TBS);
-		return -EINVAL;
-	}
-
-	BUG_ON(addr & ~DMA_BIT_MASK(36));
-	if (unlikely(addr & ~IWL_TX_DMA_MASK))
-		IWL_ERROR("Unaligned address = %llx\n",
-			  (unsigned long long)addr);
-
-	iwl_tfd_set_tb(tfd, num_tbs, addr, len);
-
-	return 0;
-}
-
 /**
  * iwl_txq_update_write_ptr - Send new write index to hardware
  */
@@ -241,7 +131,7 @@ EXPORT_SYMBOL(iwl_txq_update_write_ptr);
  * Free all buffers.
  * 0-fill, but do not free "txq" descriptor structure.
  */
-static void iwl_tx_queue_free(struct iwl_priv *priv, int txq_id)
+void iwl_tx_queue_free(struct iwl_priv *priv, int txq_id)
 {
 	struct iwl_tx_queue *txq = &priv->txq[txq_id];
 	struct iwl_queue *q = &txq->q;
@@ -254,7 +144,7 @@ static void iwl_tx_queue_free(struct iwl_priv *priv, int txq_id)
 	/* first, empty all BD's */
 	for (; q->write_ptr != q->read_ptr;
 	     q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
-		iwl_hw_txq_free_tfd(priv, txq);
+		priv->cfg->ops->lib->txq_free_tfd(priv, txq);
 
 	len = sizeof(struct iwl_cmd) * q->n_window;
 
@@ -264,7 +154,7 @@ static void iwl_tx_queue_free(struct iwl_priv *priv, int txq_id)
 
 	/* De-alloc circular buffer of TFDs */
 	if (txq->q.n_bd)
-		pci_free_consistent(dev, sizeof(struct iwl_tfd) *
+		pci_free_consistent(dev, priv->hw_params.tfd_size *
 				    txq->q.n_bd, txq->tfds, txq->q.dma_addr);
 
 	/* De-alloc array of per-TFD driver data */
@@ -274,7 +164,7 @@ static void iwl_tx_queue_free(struct iwl_priv *priv, int txq_id)
 	/* 0-fill queue descriptor structure */
 	memset(txq, 0, sizeof(*txq));
 }
-
+EXPORT_SYMBOL(iwl_tx_queue_free);
 
 /**
  * iwl_cmd_queue_free - Deallocate DMA queue.
@@ -388,6 +278,7 @@ static int iwl_tx_queue_alloc(struct iwl_priv *priv,
 			      struct iwl_tx_queue *txq, u32 id)
 {
 	struct pci_dev *dev = priv->pci_dev;
+	size_t tfd_sz = priv->hw_params.tfd_size * TFD_QUEUE_SIZE_MAX;
 
 	/* Driver private data, only for Tx (not command) queues,
 	 * not shared with device. */
@@ -395,22 +286,20 @@ static int iwl_tx_queue_alloc(struct iwl_priv *priv,
 		txq->txb = kmalloc(sizeof(txq->txb[0]) *
 				   TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
 		if (!txq->txb) {
-			IWL_ERROR("kmalloc for auxiliary BD "
+			IWL_ERR(priv, "kmalloc for auxiliary BD "
 				  "structures failed\n");
 			goto error;
 		}
-	} else
+	} else {
 		txq->txb = NULL;
+	}
 
 	/* Circular buffer of transmit frame descriptors (TFDs),
 	 * shared with device */
-	txq->tfds = pci_alloc_consistent(dev,
-			sizeof(txq->tfds[0]) * TFD_QUEUE_SIZE_MAX,
-			&txq->q.dma_addr);
+	txq->tfds = pci_alloc_consistent(dev, tfd_sz, &txq->q.dma_addr);
 
 	if (!txq->tfds) {
-		IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
-			  sizeof(txq->tfds[0]) * TFD_QUEUE_SIZE_MAX);
+		IWL_ERR(priv, "pci_alloc_consistent(%zd) failed\n", tfd_sz);
 		goto error;
 	}
 	txq->q.id = id;
@@ -424,42 +313,11 @@ static int iwl_tx_queue_alloc(struct iwl_priv *priv,
 	return -ENOMEM;
 }
 
-/*
- * Tell nic where to find circular buffer of Tx Frame Descriptors for
- * given Tx queue, and enable the DMA channel used for that queue.
- *
- * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
- * channels supported in hardware.
- */
-static int iwl_hw_tx_queue_init(struct iwl_priv *priv,
-				struct iwl_tx_queue *txq)
-{
-	int ret;
-	unsigned long flags;
-	int txq_id = txq->q.id;
-
-	spin_lock_irqsave(&priv->lock, flags);
-	ret = iwl_grab_nic_access(priv);
-	if (ret) {
-		spin_unlock_irqrestore(&priv->lock, flags);
-		return ret;
-	}
-
-	/* Circular buffer (TFD queue in DRAM) physical base address */
-	iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
-			     txq->q.dma_addr >> 8);
-
-	iwl_release_nic_access(priv);
-	spin_unlock_irqrestore(&priv->lock, flags);
-
-	return 0;
-}
-
 /**
  * iwl_tx_queue_init - Allocate and initialize one tx/cmd queue
  */
-static int iwl_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq,
-			     int slots_num, u32 txq_id)
+int iwl_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq,
+		      int slots_num, u32 txq_id)
 {
 	int i, len;
 	int ret;
@@ -501,7 +359,7 @@ static int iwl_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq,
 	iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
 
 	/* Tell device where to find queue */
-	iwl_hw_tx_queue_init(priv, txq);
+	priv->cfg->ops->lib->txq_init(priv, txq);
 
 	return 0;
 err:
@@ -516,6 +374,8 @@ err:
 	}
 	return -ENOMEM;
 }
+EXPORT_SYMBOL(iwl_tx_queue_init);
+
 /**
  * iwl_hw_txq_ctx_free - Free TXQ Context
  *
@@ -557,13 +417,13 @@ int iwl_txq_ctx_reset(struct iwl_priv *priv)
 	ret = iwl_alloc_dma_ptr(priv, &priv->scd_bc_tbls,
 				priv->hw_params.scd_bc_tbls_size);
 	if (ret) {
-		IWL_ERROR("Scheduler BC Table allocation failed\n");
+		IWL_ERR(priv, "Scheduler BC Table allocation failed\n");
 		goto error_bc_tbls;
 	}
 	/* Alloc keep-warm buffer */
 	ret = iwl_alloc_dma_ptr(priv, &priv->kw, IWL_KW_SIZE);
 	if (ret) {
-		IWL_ERROR("Keep Warm allocation failed\n");
+		IWL_ERR(priv, "Keep Warm allocation failed\n");
 		goto error_kw;
 	}
 	spin_lock_irqsave(&priv->lock, flags);
@@ -589,7 +449,7 @@ int iwl_txq_ctx_reset(struct iwl_priv *priv)
 		ret = iwl_tx_queue_init(priv, &priv->txq[txq_id], slots_num,
 				       txq_id);
 		if (ret) {
-			IWL_ERROR("Tx %d queue init failed\n", txq_id);
+			IWL_ERR(priv, "Tx %d queue init failed\n", txq_id);
 			goto error;
 		}
 	}
@@ -802,7 +662,7 @@ static void iwl_tx_cmd_build_hwcrypto(struct iwl_priv *priv,
 		break;
 
 	default:
-		printk(KERN_ERR "Unknown encode alg %d\n", keyconf->alg);
+		IWL_ERR(priv, "Unknown encode alg %d\n", keyconf->alg);
 		break;
 	}
 }
@@ -822,7 +682,6 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 {
 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-	struct iwl_tfd *tfd;
 	struct iwl_tx_queue *txq;
 	struct iwl_queue *q;
 	struct iwl_cmd *out_cmd;
@@ -850,7 +709,7 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 
 	if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) ==
 	     IWL_INVALID_RATE) {
-		IWL_ERROR("ERROR: No TX rate available.\n");
+		IWL_ERR(priv, "ERROR: No TX rate available.\n");
 		goto drop_unlock;
 	}
 
@@ -913,10 +772,6 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 
 	spin_lock_irqsave(&priv->lock, flags);
 
-	/* Set up first empty TFD within this queue's circular TFD buffer */
-	tfd = &txq->tfds[q->write_ptr];
-	memset(tfd, 0, sizeof(*tfd));
-
 	/* Set up driver data for this TFD */
 	memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
 	txq->txb[q->write_ptr].skb[0] = skb;
@@ -970,7 +825,8 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 	/* Add buffer containing Tx command and MAC(!) header to TFD's
 	 * first entry */
 	txcmd_phys += offsetof(struct iwl_cmd, hdr);
-	iwl_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len);
+	priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
+						   txcmd_phys, len, 1, 0);
 
 	if (info->control.hw_key)
 		iwl_tx_cmd_build_hwcrypto(priv, info, tx_cmd, skb, sta_id);
@@ -981,7 +837,9 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 	if (len) {
 		phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
 					   len, PCI_DMA_TODEVICE);
-		iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len);
+		priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
+							   phys_addr, len,
+							   0, 0);
 	}
 
 	/* Tell NIC about any 2-byte padding after MAC header */
@@ -1063,7 +921,6 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 {
 	struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
 	struct iwl_queue *q = &txq->q;
-	struct iwl_tfd *tfd;
 	struct iwl_cmd *out_cmd;
 	dma_addr_t phys_addr;
 	unsigned long flags;
@@ -1086,16 +943,12 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 	}
 
 	if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
-		IWL_ERROR("No space for Tx\n");
+		IWL_ERR(priv, "No space for Tx\n");
 		return -ENOSPC;
 	}
 
 	spin_lock_irqsave(&priv->hcmd_lock, flags);
 
-	tfd = &txq->tfds[q->write_ptr];
-	memset(tfd, 0, sizeof(*tfd));
-
-
 	idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
 	out_cmd = txq->cmd[idx];
 
@@ -1120,7 +973,9 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 	pci_unmap_len_set(&out_cmd->meta, len, len);
 	phys_addr += offsetof(struct iwl_cmd, hdr);
 
-	iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
+	priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
+						   phys_addr, fix_size, 1,
+						   U32_PAD(cmd->len));
 
 #ifdef CONFIG_IWLWIFI_DEBUG
 	switch (out_cmd->hdr.cmd) {
@@ -1144,8 +999,9 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 #endif
 	txq->need_update = 1;
 
-	/* Set up entry in queue's byte count circular buffer */
-	priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0);
+	if (priv->cfg->ops->lib->txq_update_byte_cnt_tbl)
+		/* Set up entry in queue's byte count circular buffer */
+		priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0);
 
 	/* Increment and update queue's write index */
 	q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
@@ -1163,7 +1019,7 @@ int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
 	int nfreed = 0;
 
 	if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
-		IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
+		IWL_ERR(priv, "Read index for DMA queue txq id (%d), index %d, "
 			  "is out of range [0-%d] %d %d.\n", txq_id,
 			  index, q->n_bd, q->write_ptr, q->read_ptr);
 		return 0;
@@ -1180,7 +1036,7 @@ int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
 		if (priv->cfg->ops->lib->txq_inval_byte_cnt_tbl)
 			priv->cfg->ops->lib->txq_inval_byte_cnt_tbl(priv, txq);
 
-		iwl_hw_txq_free_tfd(priv, txq);
+		priv->cfg->ops->lib->txq_free_tfd(priv, txq);
 		nfreed++;
 	}
 	return nfreed;
@@ -1203,7 +1059,7 @@ static void iwl_hcmd_queue_reclaim(struct iwl_priv *priv, int txq_id,
 	int nfreed = 0;
 
 	if ((idx >= q->n_bd) || (iwl_queue_used(q, idx) == 0)) {
-		IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
+		IWL_ERR(priv, "Read index for DMA queue txq id (%d), index %d, "
 			  "is out of range [0-%d] %d %d.\n", txq_id,
 			  idx, q->n_bd, q->write_ptr, q->read_ptr);
 		return;
@@ -1218,7 +1074,7 @@ static void iwl_hcmd_queue_reclaim(struct iwl_priv *priv, int txq_id,
 	     q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
 
 		if (nfreed++ > 0) {
-			IWL_ERROR("HCMD skipped: index (%d) %d %d\n", idx,
+			IWL_ERR(priv, "HCMD skipped: index (%d) %d %d\n", idx,
 					q->write_ptr, q->read_ptr);
 			queue_work(priv->workqueue, &priv->restart);
 		}
@@ -1306,7 +1162,7 @@ int iwl_tx_agg_start(struct iwl_priv *priv, const u8 *ra, u16 tid, u16 *ssn)
 	else
 		return -EINVAL;
 
-	IWL_WARNING("%s on ra = %pM tid = %d\n",
+	IWL_WARN(priv, "%s on ra = %pM tid = %d\n",
 			__func__, ra, tid);
 
 	sta_id = iwl_find_station(priv, ra);
@@ -1314,7 +1170,7 @@ int iwl_tx_agg_start(struct iwl_priv *priv, const u8 *ra, u16 tid, u16 *ssn)
 		return -ENXIO;
 
 	if (priv->stations[sta_id].tid[tid].agg.state != IWL_AGG_OFF) {
-		IWL_ERROR("Start AGG when state is not IWL_AGG_OFF !\n");
+		IWL_ERR(priv, "Start AGG when state is not IWL_AGG_OFF !\n");
 		return -ENXIO;
 	}
 
@@ -1334,7 +1190,7 @@ int iwl_tx_agg_start(struct iwl_priv *priv, const u8 *ra, u16 tid, u16 *ssn)
 		return ret;
 
 	if (tid_data->tfds_in_queue == 0) {
-		printk(KERN_ERR "HW queue is empty\n");
+		IWL_ERR(priv, "HW queue is empty\n");
 		tid_data->agg.state = IWL_AGG_ON;
 		ieee80211_start_tx_ba_cb_irqsafe(priv->hw, ra, tid);
 	} else {
@@ -1354,7 +1210,7 @@ int iwl_tx_agg_stop(struct iwl_priv *priv , const u8 *ra, u16 tid)
 	unsigned long flags;
 
 	if (!ra) {
-		IWL_ERROR("ra = NULL\n");
+		IWL_ERR(priv, "ra = NULL\n");
 		return -EINVAL;
 	}
 
@@ -1369,7 +1225,7 @@ int iwl_tx_agg_stop(struct iwl_priv *priv , const u8 *ra, u16 tid)
 		return -ENXIO;
 
 	if (priv->stations[sta_id].tid[tid].agg.state != IWL_AGG_ON)
-		IWL_WARNING("Stopping AGG while state not IWL_AGG_ON\n");
+		IWL_WARN(priv, "Stopping AGG while state not IWL_AGG_ON\n");
 
 	tid_data = &priv->stations[sta_id].tid[tid];
 	ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4;
@@ -1455,7 +1311,7 @@ static int iwl_tx_status_reply_compressed_ba(struct iwl_priv *priv,
 	struct ieee80211_tx_info *info;
 
 	if (unlikely(!agg->wait_for_ba))  {
-		IWL_ERROR("Received BA when not expected\n");
+		IWL_ERR(priv, "Received BA when not expected\n");
 		return -EINVAL;
 	}
 
@@ -1528,7 +1384,8 @@ void iwl_rx_reply_compressed_ba(struct iwl_priv *priv,
 	u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn);
 
 	if (scd_flow >= priv->hw_params.max_txq_num) {
-		IWL_ERROR("BUG_ON scd_flow is bigger than number of queues\n");
+		IWL_ERR(priv,
+			"BUG_ON scd_flow is bigger than number of queues\n");
 		return;
 	}