/******************************************************************************
*
- * 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.
* file called LICENSE.
*
* Contact Information:
- * James P. Ketrenos <ipw2100-admin@linux.intel.com>
+ * Intel Linux Wireless <ilw@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
*****************************************************************************/
#include <linux/etherdevice.h>
+#include <linux/sched.h>
#include <net/mac80211.h>
#include "iwl-eeprom.h"
#include "iwl-dev.h"
IWL_TX_FIFO_AC3
};
-
-/**
- * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
- *
- * Does NOT advance any TFD circular buffer read/write indexes
- * Does NOT free the TFD itself (which is within circular buffer)
- */
-int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+static inline int iwl_alloc_dma_ptr(struct iwl_priv *priv,
+ struct iwl_dma_ptr *ptr, size_t size)
{
- struct iwl_tfd_frame *bd_tmp = (struct iwl_tfd_frame *)&txq->bd[0];
- struct iwl_tfd_frame *bd = &bd_tmp[txq->q.read_ptr];
- struct pci_dev *dev = priv->pci_dev;
- int i;
- int counter = 0;
- int index, is_odd;
-
- /* Host command buffers stay mapped in memory, nothing to clean */
- if (txq->q.id == IWL_CMD_QUEUE_NUM)
- return 0;
-
- /* Sanity check on number of chunks */
- counter = IWL_GET_BITS(*bd, num_tbs);
- if (counter > MAX_NUM_OF_TBS) {
- IWL_ERROR("Too many chunks: %i\n", counter);
- /* @todo issue fatal error, it is quite serious situation */
- return 0;
- }
-
- /* Unmap chunks, if any.
- * TFD info for odd chunks is different format than for even chunks. */
- for (i = 0; i < counter; i++) {
- index = i / 2;
- is_odd = i & 0x1;
-
- if (is_odd)
- pci_unmap_single(
- dev,
- IWL_GET_BITS(bd->pa[index], tb2_addr_lo16) |
- (IWL_GET_BITS(bd->pa[index],
- tb2_addr_hi20) << 16),
- IWL_GET_BITS(bd->pa[index], tb2_len),
- PCI_DMA_TODEVICE);
-
- else if (i > 0)
- pci_unmap_single(dev,
- le32_to_cpu(bd->pa[index].tb1_addr),
- IWL_GET_BITS(bd->pa[index], tb1_len),
- PCI_DMA_TODEVICE);
-
- /* Free SKB, if any, for this chunk */
- if (txq->txb[txq->q.read_ptr].skb[i]) {
- struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[i];
-
- dev_kfree_skb(skb);
- txq->txb[txq->q.read_ptr].skb[i] = NULL;
- }
- }
+ ptr->addr = pci_alloc_consistent(priv->pci_dev, size, &ptr->dma);
+ if (!ptr->addr)
+ return -ENOMEM;
+ ptr->size = size;
return 0;
}
-EXPORT_SYMBOL(iwl_hw_txq_free_tfd);
-
-int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr,
- dma_addr_t addr, u16 len)
+static inline void iwl_free_dma_ptr(struct iwl_priv *priv,
+ struct iwl_dma_ptr *ptr)
{
- int index, is_odd;
- struct iwl_tfd_frame *tfd = ptr;
- u32 num_tbs = IWL_GET_BITS(*tfd, num_tbs);
-
- /* Each TFD can point to a maximum 20 Tx buffers */
- if ((num_tbs >= MAX_NUM_OF_TBS) || (num_tbs < 0)) {
- IWL_ERROR("Error can not send more than %d chunks\n",
- MAX_NUM_OF_TBS);
- return -EINVAL;
- }
-
- index = num_tbs / 2;
- is_odd = num_tbs & 0x1;
-
- if (!is_odd) {
- tfd->pa[index].tb1_addr = cpu_to_le32(addr);
- IWL_SET_BITS(tfd->pa[index], tb1_addr_hi,
- iwl_get_dma_hi_address(addr));
- IWL_SET_BITS(tfd->pa[index], tb1_len, len);
- } else {
- IWL_SET_BITS(tfd->pa[index], tb2_addr_lo16,
- (u32) (addr & 0xffff));
- IWL_SET_BITS(tfd->pa[index], tb2_addr_hi20, addr >> 16);
- IWL_SET_BITS(tfd->pa[index], tb2_len, len);
- }
-
- IWL_SET_BITS(*tfd, num_tbs, num_tbs + 1);
+ if (unlikely(!ptr->addr))
+ return;
- return 0;
+ pci_free_consistent(priv->pci_dev, ptr->size, ptr->addr, ptr->dma);
+ memset(ptr, 0, sizeof(*ptr));
}
-EXPORT_SYMBOL(iwl_hw_txq_attach_buf_to_tfd);
/**
* iwl_txq_update_write_ptr - Send new write index to hardware
reg = iwl_read32(priv, CSR_UCODE_DRV_GP1);
if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) {
- IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg);
+ IWL_DEBUG_INFO(priv, "Tx queue %d requesting wakeup, GP1 = 0x%x\n",
+ txq_id, reg);
iwl_set_bit(priv, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
return ret;
}
- /* restore this queue's parameters in nic hardware. */
- ret = iwl_grab_nic_access(priv);
- if (ret)
- return ret;
iwl_write_direct32(priv, HBUS_TARG_WRPTR,
txq->q.write_ptr | (txq_id << 8));
- iwl_release_nic_access(priv);
/* else not in power-save mode, uCode will never sleep when we're
* trying to tx (during RFKILL, we're not trying to tx). */
EXPORT_SYMBOL(iwl_txq_update_write_ptr);
+void iwl_free_tfds_in_queue(struct iwl_priv *priv,
+ int sta_id, int tid, int freed)
+{
+ if (priv->stations[sta_id].tid[tid].tfds_in_queue >= freed)
+ priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
+ else {
+ IWL_ERR(priv, "free more than tfds_in_queue (%u:%d)\n",
+ priv->stations[sta_id].tid[tid].tfds_in_queue,
+ freed);
+ priv->stations[sta_id].tid[tid].tfds_in_queue = 0;
+ }
+}
+EXPORT_SYMBOL(iwl_free_tfds_in_queue);
+
/**
* iwl_tx_queue_free - Deallocate DMA queue.
* @txq: Transmit queue to deallocate.
* 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;
struct pci_dev *dev = priv->pci_dev;
- int i, slots_num, len;
+ int i;
if (q->n_bd == 0)
return;
/* 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);
-
- len = sizeof(struct iwl_cmd) * q->n_window;
- if (q->id == IWL_CMD_QUEUE_NUM)
- len += IWL_MAX_SCAN_SIZE;
+ priv->cfg->ops->lib->txq_free_tfd(priv, txq);
/* De-alloc array of command/tx buffers */
- slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ?
- TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
- for (i = 0; i < slots_num; i++)
+ for (i = 0; i < TFD_TX_CMD_SLOTS; i++)
kfree(txq->cmd[i]);
- if (txq_id == IWL_CMD_QUEUE_NUM)
- kfree(txq->cmd[slots_num]);
/* De-alloc circular buffer of TFDs */
if (txq->q.n_bd)
- pci_free_consistent(dev, sizeof(struct iwl_tfd_frame) *
- txq->q.n_bd, txq->bd, txq->q.dma_addr);
+ 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 */
kfree(txq->txb);
txq->txb = NULL;
+ /* deallocate arrays */
+ kfree(txq->cmd);
+ kfree(txq->meta);
+ txq->cmd = NULL;
+ txq->meta = NULL;
+
+ /* 0-fill queue descriptor structure */
+ memset(txq, 0, sizeof(*txq));
+}
+EXPORT_SYMBOL(iwl_tx_queue_free);
+
+/**
+ * iwl_cmd_queue_free - Deallocate DMA queue.
+ * @txq: Transmit queue to deallocate.
+ *
+ * Empty queue by removing and destroying all BD's.
+ * Free all buffers.
+ * 0-fill, but do not free "txq" descriptor structure.
+ */
+void iwl_cmd_queue_free(struct iwl_priv *priv)
+{
+ struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
+ struct iwl_queue *q = &txq->q;
+ struct pci_dev *dev = priv->pci_dev;
+ int i;
+
+ if (q->n_bd == 0)
+ return;
+
+ /* De-alloc array of command/tx buffers */
+ for (i = 0; i <= TFD_CMD_SLOTS; i++)
+ kfree(txq->cmd[i]);
+
+ /* De-alloc circular buffer of TFDs */
+ if (txq->q.n_bd)
+ pci_free_consistent(dev, priv->hw_params.tfd_size *
+ txq->q.n_bd, txq->tfds, txq->q.dma_addr);
+
+ /* deallocate arrays */
+ kfree(txq->cmd);
+ kfree(txq->meta);
+ txq->cmd = NULL;
+ txq->meta = NULL;
+
/* 0-fill queue descriptor structure */
memset(txq, 0, sizeof(*txq));
}
+EXPORT_SYMBOL(iwl_cmd_queue_free);
/*************** DMA-QUEUE-GENERAL-FUNCTIONS *****
* DMA services
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. */
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->bd = pci_alloc_consistent(dev,
- sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
- &txq->q.dma_addr);
+ txq->tfds = pci_alloc_consistent(dev, tfd_sz, &txq->q.dma_addr);
- if (!txq->bd) {
- IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
- sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
+ if (!txq->tfds) {
+ IWL_ERR(priv, "pci_alloc_consistent(%zd) failed\n", tfd_sz);
goto error;
}
txq->q.id = id;
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 rc;
- unsigned long flags;
- int txq_id = txq->q.id;
-
- spin_lock_irqsave(&priv->lock, flags);
- rc = iwl_grab_nic_access(priv);
- if (rc) {
- spin_unlock_irqrestore(&priv->lock, flags);
- return rc;
- }
-
- /* Circular buffer (TFD queue in DRAM) physical base address */
- iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
- txq->q.dma_addr >> 8);
-
- /* Enable DMA channel, using same id as for TFD queue */
- iwl_write_direct32(
- priv, FH_TCSR_CHNL_TX_CONFIG_REG(txq_id),
- FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
- FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL);
- 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 rc = 0;
+ int ret;
+ int actual_slots = slots_num;
/*
* Alloc buffer array for commands (Tx or other types of commands).
* For normal Tx queues (all other queues), no super-size command
* space is needed.
*/
- len = sizeof(struct iwl_cmd);
- for (i = 0; i <= slots_num; i++) {
- if (i == slots_num) {
- if (txq_id == IWL_CMD_QUEUE_NUM)
- len += IWL_MAX_SCAN_SIZE;
- else
- continue;
- }
+ if (txq_id == IWL_CMD_QUEUE_NUM)
+ actual_slots++;
+
+ txq->meta = kzalloc(sizeof(struct iwl_cmd_meta) * actual_slots,
+ GFP_KERNEL);
+ txq->cmd = kzalloc(sizeof(struct iwl_device_cmd *) * actual_slots,
+ GFP_KERNEL);
+
+ if (!txq->meta || !txq->cmd)
+ goto out_free_arrays;
+
+ len = sizeof(struct iwl_device_cmd);
+ for (i = 0; i < actual_slots; i++) {
+ /* only happens for cmd queue */
+ if (i == slots_num)
+ len += IWL_MAX_SCAN_SIZE;
- txq->cmd[i] = kmalloc(len, GFP_KERNEL | GFP_DMA);
+ txq->cmd[i] = kmalloc(len, GFP_KERNEL);
if (!txq->cmd[i])
- return -ENOMEM;
+ goto err;
}
/* Alloc driver data array and TFD circular buffer */
- rc = iwl_tx_queue_alloc(priv, txq, txq_id);
- if (rc) {
- for (i = 0; i < slots_num; i++)
- kfree(txq->cmd[i]);
+ ret = iwl_tx_queue_alloc(priv, txq, txq_id);
+ if (ret)
+ goto err;
- return -ENOMEM;
- }
txq->need_update = 0;
+ /*
+ * Aggregation TX queues will get their ID when aggregation begins;
+ * they overwrite the setting done here. The command FIFO doesn't
+ * need an swq_id so don't set one to catch errors, all others can
+ * be set up to the identity mapping.
+ */
+ if (txq_id != IWL_CMD_QUEUE_NUM)
+ txq->swq_id = txq_id;
+
/* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
* iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
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:
+ for (i = 0; i < actual_slots; i++)
+ kfree(txq->cmd[i]);
+out_free_arrays:
+ kfree(txq->meta);
+ kfree(txq->cmd);
+
+ return -ENOMEM;
}
+EXPORT_SYMBOL(iwl_tx_queue_init);
+
/**
* iwl_hw_txq_ctx_free - Free TXQ Context
*
int txq_id;
/* Tx queues */
- for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++)
- iwl_tx_queue_free(priv, txq_id);
+ if (priv->txq) {
+ for (txq_id = 0; txq_id < priv->hw_params.max_txq_num;
+ txq_id++)
+ if (txq_id == IWL_CMD_QUEUE_NUM)
+ iwl_cmd_queue_free(priv);
+ else
+ iwl_tx_queue_free(priv, txq_id);
+ }
+ iwl_free_dma_ptr(priv, &priv->kw);
- /* Keep-warm buffer */
- iwl_kw_free(priv);
+ iwl_free_dma_ptr(priv, &priv->scd_bc_tbls);
+
+ /* free tx queue structure */
+ iwl_free_txq_mem(priv);
}
EXPORT_SYMBOL(iwl_hw_txq_ctx_free);
-
/**
* iwl_txq_ctx_reset - Reset TX queue context
- * Destroys all DMA structures and initialise them again
+ * Destroys all DMA structures and initialize them again
*
* @param priv
* @return error code
int txq_id, slots_num;
unsigned long flags;
- iwl_kw_free(priv);
-
/* Free all tx/cmd queues and keep-warm buffer */
iwl_hw_txq_ctx_free(priv);
+ ret = iwl_alloc_dma_ptr(priv, &priv->scd_bc_tbls,
+ priv->hw_params.scd_bc_tbls_size);
+ if (ret) {
+ IWL_ERR(priv, "Scheduler BC Table allocation failed\n");
+ goto error_bc_tbls;
+ }
/* Alloc keep-warm buffer */
- ret = iwl_kw_alloc(priv);
+ ret = iwl_alloc_dma_ptr(priv, &priv->kw, IWL_KW_SIZE);
if (ret) {
- IWL_ERROR("Keep Warm allocation failed");
+ IWL_ERR(priv, "Keep Warm allocation failed\n");
goto error_kw;
}
+
+ /* allocate tx queue structure */
+ ret = iwl_alloc_txq_mem(priv);
+ if (ret)
+ goto error;
+
spin_lock_irqsave(&priv->lock, flags);
- ret = iwl_grab_nic_access(priv);
- if (unlikely(ret)) {
- spin_unlock_irqrestore(&priv->lock, flags);
- goto error_reset;
- }
/* Turn off all Tx DMA fifos */
priv->cfg->ops->lib->txq_set_sched(priv, 0);
- iwl_release_nic_access(priv);
- spin_unlock_irqrestore(&priv->lock, flags);
-
+ /* Tell NIC where to find the "keep warm" buffer */
+ iwl_write_direct32(priv, FH_KW_MEM_ADDR_REG, priv->kw.dma >> 4);
- /* Tell nic where to find the keep-warm buffer */
- ret = iwl_kw_init(priv);
- if (ret) {
- IWL_ERROR("kw_init failed\n");
- goto error_reset;
- }
+ spin_unlock_irqrestore(&priv->lock, flags);
/* Alloc and init all Tx queues, including the command queue (#4) */
for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
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;
}
}
error:
iwl_hw_txq_ctx_free(priv);
- error_reset:
- iwl_kw_free(priv);
+ iwl_free_dma_ptr(priv, &priv->kw);
error_kw:
+ iwl_free_dma_ptr(priv, &priv->scd_bc_tbls);
+ error_bc_tbls:
return ret;
}
+
/**
* iwl_txq_ctx_stop - Stop all Tx DMA channels, free Tx queue memory
*/
void iwl_txq_ctx_stop(struct iwl_priv *priv)
{
-
- int txq_id;
+ int ch;
unsigned long flags;
-
/* Turn off all Tx DMA fifos */
spin_lock_irqsave(&priv->lock, flags);
- if (iwl_grab_nic_access(priv)) {
- spin_unlock_irqrestore(&priv->lock, flags);
- return;
- }
priv->cfg->ops->lib->txq_set_sched(priv, 0);
/* Stop each Tx DMA channel, and wait for it to be idle */
- for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
- iwl_write_direct32(priv,
- FH_TCSR_CHNL_TX_CONFIG_REG(txq_id), 0x0);
+ for (ch = 0; ch < priv->hw_params.dma_chnl_num; ch++) {
+ iwl_write_direct32(priv, FH_TCSR_CHNL_TX_CONFIG_REG(ch), 0x0);
iwl_poll_direct_bit(priv, FH_TSSR_TX_STATUS_REG,
- FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE
- (txq_id), 200);
+ FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(ch),
+ 1000);
}
- iwl_release_nic_access(priv);
spin_unlock_irqrestore(&priv->lock, flags);
/* Deallocate memory for all Tx queues */
struct iwl_tx_cmd *tx_cmd,
struct ieee80211_tx_info *info,
struct ieee80211_hdr *hdr,
- int is_unicast, u8 std_id)
+ u8 std_id)
{
__le16 fc = hdr->frame_control;
__le32 tx_flags = tx_cmd->tx_flags;
static void iwl_tx_cmd_build_rate(struct iwl_priv *priv,
struct iwl_tx_cmd *tx_cmd,
struct ieee80211_tx_info *info,
- __le16 fc, int sta_id,
- int is_hcca)
+ __le16 fc, int is_hcca)
{
- u8 rts_retry_limit = 0;
- u8 data_retry_limit = 0;
- u8 rate_plcp;
- u16 rate_flags = 0;
+ u32 rate_flags;
int rate_idx;
+ u8 rts_retry_limit;
+ u8 data_retry_limit;
+ u8 rate_plcp;
- rate_idx = min(ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xffff,
- IWL_RATE_COUNT - 1);
-
- rate_plcp = iwl_rates[rate_idx].plcp;
-
- rts_retry_limit = (is_hcca) ?
- RTS_HCCA_RETRY_LIMIT : RTS_DFAULT_RETRY_LIMIT;
-
- if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE))
- rate_flags |= RATE_MCS_CCK_MSK;
-
-
- if (ieee80211_is_probe_resp(fc)) {
+ /* Set retry limit on DATA packets and Probe Responses*/
+ if (ieee80211_is_probe_resp(fc))
data_retry_limit = 3;
- if (data_retry_limit < rts_retry_limit)
- rts_retry_limit = data_retry_limit;
- } else
+ else
data_retry_limit = IWL_DEFAULT_TX_RETRY;
+ tx_cmd->data_retry_limit = data_retry_limit;
- if (priv->data_retry_limit != -1)
- data_retry_limit = priv->data_retry_limit;
-
+ /* Set retry limit on RTS packets */
+ rts_retry_limit = (is_hcca) ? RTS_HCCA_RETRY_LIMIT :
+ RTS_DFAULT_RETRY_LIMIT;
+ if (data_retry_limit < rts_retry_limit)
+ rts_retry_limit = data_retry_limit;
+ tx_cmd->rts_retry_limit = rts_retry_limit;
+ /* DATA packets will use the uCode station table for rate/antenna
+ * selection */
if (ieee80211_is_data(fc)) {
tx_cmd->initial_rate_index = 0;
tx_cmd->tx_flags |= TX_CMD_FLG_STA_RATE_MSK;
- } else {
- switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
- case cpu_to_le16(IEEE80211_STYPE_AUTH):
- case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
- case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
- case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
- if (tx_cmd->tx_flags & TX_CMD_FLG_RTS_MSK) {
- tx_cmd->tx_flags &= ~TX_CMD_FLG_RTS_MSK;
- tx_cmd->tx_flags |= TX_CMD_FLG_CTS_MSK;
- }
- break;
- default:
- break;
- }
+ return;
+ }
- /* Alternate between antenna A and B for successive frames */
- if (priv->use_ant_b_for_management_frame) {
- priv->use_ant_b_for_management_frame = 0;
- rate_flags |= RATE_MCS_ANT_B_MSK;
- } else {
- priv->use_ant_b_for_management_frame = 1;
- rate_flags |= RATE_MCS_ANT_A_MSK;
+ /**
+ * If the current TX rate stored in mac80211 has the MCS bit set, it's
+ * not really a TX rate. Thus, we use the lowest supported rate for
+ * this band. Also use the lowest supported rate if the stored rate
+ * index is invalid.
+ */
+ rate_idx = info->control.rates[0].idx;
+ if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS ||
+ (rate_idx < 0) || (rate_idx > IWL_RATE_COUNT_LEGACY))
+ rate_idx = rate_lowest_index(&priv->bands[info->band],
+ info->control.sta);
+ /* For 5 GHZ band, remap mac80211 rate indices into driver indices */
+ if (info->band == IEEE80211_BAND_5GHZ)
+ rate_idx += IWL_FIRST_OFDM_RATE;
+ /* Get PLCP rate for tx_cmd->rate_n_flags */
+ rate_plcp = iwl_rates[rate_idx].plcp;
+ /* Zero out flags for this packet */
+ rate_flags = 0;
+
+ /* Set CCK flag as needed */
+ if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE))
+ rate_flags |= RATE_MCS_CCK_MSK;
+
+ /* Set up RTS and CTS flags for certain packets */
+ switch (fc & cpu_to_le16(IEEE80211_FCTL_STYPE)) {
+ case cpu_to_le16(IEEE80211_STYPE_AUTH):
+ case cpu_to_le16(IEEE80211_STYPE_DEAUTH):
+ case cpu_to_le16(IEEE80211_STYPE_ASSOC_REQ):
+ case cpu_to_le16(IEEE80211_STYPE_REASSOC_REQ):
+ if (tx_cmd->tx_flags & TX_CMD_FLG_RTS_MSK) {
+ tx_cmd->tx_flags &= ~TX_CMD_FLG_RTS_MSK;
+ tx_cmd->tx_flags |= TX_CMD_FLG_CTS_MSK;
}
+ break;
+ default:
+ break;
}
- tx_cmd->rts_retry_limit = rts_retry_limit;
- tx_cmd->data_retry_limit = data_retry_limit;
+ /* Set up antennas */
+ priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant);
+ rate_flags |= iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
+
+ /* Set the rate in the TX cmd */
tx_cmd->rate_n_flags = iwl_hw_set_rate_n_flags(rate_plcp, rate_flags);
}
memcpy(tx_cmd->key, keyconf->key, keyconf->keylen);
if (info->flags & IEEE80211_TX_CTL_AMPDU)
tx_cmd->tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK;
- IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n");
+ IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
break;
case ALG_TKIP:
tx_cmd->sec_ctl = TX_CMD_SEC_TKIP;
ieee80211_get_tkip_key(keyconf, skb_frag,
IEEE80211_TKIP_P2_KEY, tx_cmd->key);
- IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
+ IWL_DEBUG_TX(priv, "tx_cmd with tkip hwcrypto\n");
break;
case ALG_WEP:
memcpy(&tx_cmd->key[3], keyconf->key, keyconf->keylen);
- IWL_DEBUG_TX("Configuring packet for WEP encryption "
+ IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
"with key %d\n", keyconf->keyidx);
break;
default:
- printk(KERN_ERR "Unknown encode alg %d\n", keyconf->alg);
+ IWL_ERR(priv, "Unknown encode alg %d\n", keyconf->alg);
break;
}
}
-static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len)
-{
- /* 0 - mgmt, 1 - cnt, 2 - data */
- int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
- priv->tx_stats[idx].cnt++;
- priv->tx_stats[idx].bytes += len;
-}
-
/*
* start REPLY_TX command process
*/
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct iwl_tfd_frame *tfd;
+ struct ieee80211_sta *sta = info->control.sta;
+ struct iwl_station_priv *sta_priv = NULL;
struct iwl_tx_queue *txq;
struct iwl_queue *q;
- struct iwl_cmd *out_cmd;
+ struct iwl_device_cmd *out_cmd;
+ struct iwl_cmd_meta *out_meta;
struct iwl_tx_cmd *tx_cmd;
int swq_id, txq_id;
dma_addr_t phys_addr;
dma_addr_t txcmd_phys;
dma_addr_t scratch_phys;
- u16 len, idx, len_org;
+ u16 len, len_org, firstlen, secondlen;
u16 seq_number = 0;
__le16 fc;
- u8 hdr_len, unicast;
+ u8 hdr_len;
u8 sta_id;
u8 wait_write_ptr = 0;
u8 tid = 0;
spin_lock_irqsave(&priv->lock, flags);
if (iwl_is_rfkill(priv)) {
- IWL_DEBUG_DROP("Dropping - RF KILL\n");
- goto drop_unlock;
- }
-
- if (!priv->vif) {
- IWL_DEBUG_DROP("Dropping - !priv->vif\n");
+ IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
goto drop_unlock;
}
- if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) ==
- IWL_INVALID_RATE) {
- IWL_ERROR("ERROR: No TX rate available.\n");
- goto drop_unlock;
- }
-
- unicast = !is_multicast_ether_addr(hdr->addr1);
-
fc = hdr->frame_control;
#ifdef CONFIG_IWLWIFI_DEBUG
if (ieee80211_is_auth(fc))
- IWL_DEBUG_TX("Sending AUTH frame\n");
+ IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
else if (ieee80211_is_assoc_req(fc))
- IWL_DEBUG_TX("Sending ASSOC frame\n");
+ IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
else if (ieee80211_is_reassoc_req(fc))
- IWL_DEBUG_TX("Sending REASSOC frame\n");
+ IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
#endif
- /* drop all data frame if we are not associated */
+ /* drop all non-injected data frame if we are not associated */
if (ieee80211_is_data(fc) &&
- (!iwl_is_associated(priv) ||
- ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) ||
- !priv->assoc_station_added)) {
- IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n");
+ !(info->flags & IEEE80211_TX_CTL_INJECTED) &&
+ (!iwl_is_associated(priv) ||
+ ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id) ||
+ !priv->assoc_station_added)) {
+ IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
goto drop_unlock;
}
- spin_unlock_irqrestore(&priv->lock, flags);
-
- hdr_len = ieee80211_get_hdrlen(le16_to_cpu(fc));
+ hdr_len = ieee80211_hdrlen(fc);
/* Find (or create) index into station table for destination station */
- sta_id = iwl_get_sta_id(priv, hdr);
+ if (info->flags & IEEE80211_TX_CTL_INJECTED)
+ sta_id = priv->hw_params.bcast_sta_id;
+ else
+ sta_id = iwl_get_sta_id(priv, hdr);
if (sta_id == IWL_INVALID_STATION) {
- DECLARE_MAC_BUF(mac);
-
- IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n",
- print_mac(mac, hdr->addr1));
- goto drop;
+ IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
+ hdr->addr1);
+ goto drop_unlock;
}
- IWL_DEBUG_TX("station Id %d\n", sta_id);
+ IWL_DEBUG_TX(priv, "station Id %d\n", sta_id);
+
+ if (sta)
+ sta_priv = (void *)sta->drv_priv;
+
+ if (sta_priv && sta_id != priv->hw_params.bcast_sta_id &&
+ sta_priv->asleep) {
+ WARN_ON(!(info->flags & IEEE80211_TX_CTL_PSPOLL_RESPONSE));
+ /*
+ * This sends an asynchronous command to the device,
+ * but we can rely on it being processed before the
+ * next frame is processed -- and the next frame to
+ * this station is the one that will consume this
+ * counter.
+ * For now set the counter to just 1 since we do not
+ * support uAPSD yet.
+ */
+ iwl_sta_modify_sleep_tx_count(priv, sta_id, 1);
+ }
- swq_id = skb_get_queue_mapping(skb);
- txq_id = swq_id;
+ txq_id = skb_get_queue_mapping(skb);
if (ieee80211_is_data_qos(fc)) {
qc = ieee80211_get_qos_ctl(hdr);
- tid = qc[0] & 0xf;
+ tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
+ if (unlikely(tid >= MAX_TID_COUNT))
+ goto drop_unlock;
seq_number = priv->stations[sta_id].tid[tid].seq_number;
seq_number &= IEEE80211_SCTL_SEQ;
hdr->seq_ctrl = hdr->seq_ctrl &
- __constant_cpu_to_le16(IEEE80211_SCTL_FRAG);
+ cpu_to_le16(IEEE80211_SCTL_FRAG);
hdr->seq_ctrl |= cpu_to_le16(seq_number);
seq_number += 0x10;
/* aggregation is on for this <sta,tid> */
if (info->flags & IEEE80211_TX_CTL_AMPDU)
txq_id = priv->stations[sta_id].tid[tid].agg.txq_id;
- priv->stations[sta_id].tid[tid].tfds_in_queue++;
}
- /* Descriptor for chosen Tx queue */
txq = &priv->txq[txq_id];
+ swq_id = txq->swq_id;
q = &txq->q;
- spin_lock_irqsave(&priv->lock, flags);
+ if (unlikely(iwl_queue_space(q) < q->high_mark))
+ goto drop_unlock;
- /* Set up first empty TFD within this queue's circular TFD buffer */
- tfd = &txq->bd[q->write_ptr];
- memset(tfd, 0, sizeof(*tfd));
- idx = get_cmd_index(q, q->write_ptr, 0);
+ if (ieee80211_is_data_qos(fc))
+ priv->stations[sta_id].tid[tid].tfds_in_queue++;
/* 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;
/* Set up first empty entry in queue's array of Tx/cmd buffers */
- out_cmd = txq->cmd[idx];
+ out_cmd = txq->cmd[q->write_ptr];
+ out_meta = &txq->meta[q->write_ptr];
tx_cmd = &out_cmd->cmd.tx;
memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
memset(tx_cmd, 0, sizeof(struct iwl_tx_cmd));
/* Copy MAC header from skb into command buffer */
memcpy(tx_cmd->hdr, hdr, hdr_len);
+
+ /* Total # bytes to be transmitted */
+ len = (u16)skb->len;
+ tx_cmd->len = cpu_to_le16(len);
+
+ if (info->control.hw_key)
+ iwl_tx_cmd_build_hwcrypto(priv, info, tx_cmd, skb, sta_id);
+
+ /* TODO need this for burst mode later on */
+ iwl_tx_cmd_build_basic(priv, tx_cmd, info, hdr, sta_id);
+ iwl_dbg_log_tx_data_frame(priv, len, hdr);
+
+ /* set is_hcca to 0; it probably will never be implemented */
+ iwl_tx_cmd_build_rate(priv, tx_cmd, info, fc, 0);
+
+ iwl_update_stats(priv, true, fc, len);
/*
* Use the first empty entry in this queue's command buffer array
* to contain the Tx command and MAC header concatenated together
sizeof(struct iwl_cmd_header) + hdr_len;
len_org = len;
- len = (len + 3) & ~3;
+ firstlen = len = (len + 3) & ~3;
if (len_org != len)
len_org = 1;
else
len_org = 0;
+ /* Tell NIC about any 2-byte padding after MAC header */
+ if (len_org)
+ tx_cmd->tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
+
/* Physical address of this Tx command's header (not MAC header!),
* within command buffer array. */
- txcmd_phys = pci_map_single(priv->pci_dev, out_cmd,
- sizeof(struct iwl_cmd), PCI_DMA_TODEVICE);
- txcmd_phys += offsetof(struct iwl_cmd, hdr);
-
+ txcmd_phys = pci_map_single(priv->pci_dev,
+ &out_cmd->hdr, len,
+ PCI_DMA_BIDIRECTIONAL);
+ pci_unmap_addr_set(out_meta, mapping, txcmd_phys);
+ pci_unmap_len_set(out_meta, len, len);
/* Add buffer containing Tx command and MAC(!) header to TFD's
* first entry */
- 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);
+ if (!ieee80211_has_morefrags(hdr->frame_control)) {
+ txq->need_update = 1;
+ if (qc)
+ priv->stations[sta_id].tid[tid].seq_number = seq_number;
+ } else {
+ wait_write_ptr = 1;
+ txq->need_update = 0;
+ }
/* Set up TFD's 2nd entry to point directly to remainder of skb,
* if any (802.11 null frames have no payload). */
- len = skb->len - hdr_len;
+ secondlen = len = skb->len - hdr_len;
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 */
- if (len_org)
- tx_cmd->tx_flags |= TX_CMD_FLG_MH_PAD_MSK;
-
- /* Total # bytes to be transmitted */
- len = (u16)skb->len;
- tx_cmd->len = cpu_to_le16(len);
- /* TODO need this for burst mode later on */
- iwl_tx_cmd_build_basic(priv, tx_cmd, info, hdr, unicast, sta_id);
-
- /* set is_hcca to 0; it probably will never be implemented */
- iwl_tx_cmd_build_rate(priv, tx_cmd, info, fc, sta_id, 0);
-
- iwl_update_tx_stats(priv, le16_to_cpu(fc), len);
-
scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
- offsetof(struct iwl_tx_cmd, scratch);
- tx_cmd->dram_lsb_ptr = cpu_to_le32(scratch_phys);
- tx_cmd->dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
+ offsetof(struct iwl_tx_cmd, scratch);
- if (!ieee80211_has_morefrags(hdr->frame_control)) {
- txq->need_update = 1;
- if (qc)
- priv->stations[sta_id].tid[tid].seq_number = seq_number;
- } else {
- wait_write_ptr = 1;
- txq->need_update = 0;
- }
+ len = sizeof(struct iwl_tx_cmd) +
+ sizeof(struct iwl_cmd_header) + hdr_len;
+ /* take back ownership of DMA buffer to enable update */
+ pci_dma_sync_single_for_cpu(priv->pci_dev, txcmd_phys,
+ len, PCI_DMA_BIDIRECTIONAL);
+ tx_cmd->dram_lsb_ptr = cpu_to_le32(scratch_phys);
+ tx_cmd->dram_msb_ptr = iwl_get_dma_hi_addr(scratch_phys);
+ IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
+ le16_to_cpu(out_cmd->hdr.sequence));
+ IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx_cmd->tx_flags));
iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd, sizeof(*tx_cmd));
-
iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr, hdr_len);
/* Set up entry for this TFD in Tx byte-count array */
- priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, len);
+ if (info->flags & IEEE80211_TX_CTL_AMPDU)
+ priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq,
+ le16_to_cpu(tx_cmd->len));
+
+ pci_dma_sync_single_for_device(priv->pci_dev, txcmd_phys,
+ len, PCI_DMA_BIDIRECTIONAL);
+
+ trace_iwlwifi_dev_tx(priv,
+ &((struct iwl_tfd *)txq->tfds)[txq->q.write_ptr],
+ sizeof(struct iwl_tfd),
+ &out_cmd->hdr, firstlen,
+ skb->data + hdr_len, secondlen);
/* Tell device the write index *just past* this latest filled TFD */
q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
ret = iwl_txq_update_write_ptr(priv, txq);
spin_unlock_irqrestore(&priv->lock, flags);
+ /*
+ * At this point the frame is "transmitted" successfully
+ * and we will get a TX status notification eventually,
+ * regardless of the value of ret. "ret" only indicates
+ * whether or not we should update the write pointer.
+ */
+
+ /* avoid atomic ops if it isn't an associated client */
+ if (sta_priv && sta_priv->client)
+ atomic_inc(&sta_priv->pending_frames);
+
if (ret)
return ret;
iwl_txq_update_write_ptr(priv, txq);
spin_unlock_irqrestore(&priv->lock, flags);
} else {
- ieee80211_stop_queue(priv->hw, swq_id);
+ iwl_stop_queue(priv, txq->swq_id);
}
}
drop_unlock:
spin_unlock_irqrestore(&priv->lock, flags);
-drop:
return -1;
}
EXPORT_SYMBOL(iwl_tx_skb);
{
struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
struct iwl_queue *q = &txq->q;
- struct iwl_tfd_frame *tfd;
- struct iwl_cmd *out_cmd;
+ struct iwl_device_cmd *out_cmd;
+ struct iwl_cmd_meta *out_meta;
dma_addr_t phys_addr;
unsigned long flags;
int len, ret;
* the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
* we will need to increase the size of the TFD entries */
BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
- !(cmd->meta.flags & CMD_SIZE_HUGE));
+ !(cmd->flags & CMD_SIZE_HUGE));
- if (iwl_is_rfkill(priv)) {
- IWL_DEBUG_INFO("Not sending command - RF KILL");
+ if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
+ IWL_WARN(priv, "Not sending command - %s KILL\n",
+ iwl_is_rfkill(priv) ? "RF" : "CT");
return -EIO;
}
- if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) {
- IWL_ERROR("No space for Tx\n");
+ if (iwl_queue_space(q) < ((cmd->flags & CMD_ASYNC) ? 2 : 1)) {
+ IWL_ERR(priv, "No space in command queue\n");
+ if (iwl_within_ct_kill_margin(priv))
+ iwl_tt_enter_ct_kill(priv);
+ else {
+ IWL_ERR(priv, "Restarting adapter due to queue full\n");
+ queue_work(priv->workqueue, &priv->restart);
+ }
return -ENOSPC;
}
spin_lock_irqsave(&priv->hcmd_lock, flags);
- tfd = &txq->bd[q->write_ptr];
- memset(tfd, 0, sizeof(*tfd));
-
-
- idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE);
+ idx = get_cmd_index(q, q->write_ptr, cmd->flags & CMD_SIZE_HUGE);
out_cmd = txq->cmd[idx];
+ out_meta = &txq->meta[idx];
+
+ memset(out_meta, 0, sizeof(*out_meta)); /* re-initialize to NULL */
+ out_meta->flags = cmd->flags;
+ if (cmd->flags & CMD_WANT_SKB)
+ out_meta->source = cmd;
+ if (cmd->flags & CMD_ASYNC)
+ out_meta->callback = cmd->callback;
out_cmd->hdr.cmd = cmd->id;
- memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta));
memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len);
/* At this point, the out_cmd now has all of the incoming cmd
out_cmd->hdr.flags = 0;
out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) |
INDEX_TO_SEQ(q->write_ptr));
- if (out_cmd->meta.flags & CMD_SIZE_HUGE)
- out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME);
- len = (idx == TFD_CMD_SLOTS) ?
- IWL_MAX_SCAN_SIZE : sizeof(struct iwl_cmd);
- phys_addr = pci_map_single(priv->pci_dev, out_cmd, len,
- PCI_DMA_TODEVICE);
- phys_addr += offsetof(struct iwl_cmd, hdr);
- iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size);
-
- IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, "
- "%d bytes at %d[%d]:%d\n",
- get_cmd_string(out_cmd->hdr.cmd),
- out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence),
- fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
+ if (cmd->flags & CMD_SIZE_HUGE)
+ out_cmd->hdr.sequence |= SEQ_HUGE_FRAME;
+ len = sizeof(struct iwl_device_cmd);
+ len += (idx == TFD_CMD_SLOTS) ? IWL_MAX_SCAN_SIZE : 0;
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+ switch (out_cmd->hdr.cmd) {
+ case REPLY_TX_LINK_QUALITY_CMD:
+ case SENSITIVITY_CMD:
+ IWL_DEBUG_HC_DUMP(priv, "Sending command %s (#%x), seq: 0x%04X, "
+ "%d bytes at %d[%d]:%d\n",
+ get_cmd_string(out_cmd->hdr.cmd),
+ out_cmd->hdr.cmd,
+ le16_to_cpu(out_cmd->hdr.sequence), fix_size,
+ q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
+ break;
+ default:
+ IWL_DEBUG_HC(priv, "Sending command %s (#%x), seq: 0x%04X, "
+ "%d bytes at %d[%d]:%d\n",
+ get_cmd_string(out_cmd->hdr.cmd),
+ out_cmd->hdr.cmd,
+ le16_to_cpu(out_cmd->hdr.sequence), fix_size,
+ q->write_ptr, idx, IWL_CMD_QUEUE_NUM);
+ }
+#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);
+
+ phys_addr = pci_map_single(priv->pci_dev, &out_cmd->hdr,
+ fix_size, PCI_DMA_BIDIRECTIONAL);
+ pci_unmap_addr_set(out_meta, mapping, phys_addr);
+ pci_unmap_len_set(out_meta, len, fix_size);
+
+ trace_iwlwifi_dev_hcmd(priv, &out_cmd->hdr, fix_size, cmd->flags);
+
+ priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
+ phys_addr, fix_size, 1,
+ U32_PAD(cmd->len));
/* Increment and update queue's write index */
q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
return ret ? ret : idx;
}
+static void iwl_tx_status(struct iwl_priv *priv, struct sk_buff *skb)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct ieee80211_sta *sta;
+ struct iwl_station_priv *sta_priv;
+
+ sta = ieee80211_find_sta(priv->vif, hdr->addr1);
+ if (sta) {
+ sta_priv = (void *)sta->drv_priv;
+ /* avoid atomic ops if this isn't a client */
+ if (sta_priv->client &&
+ atomic_dec_return(&sta_priv->pending_frames) == 0)
+ ieee80211_sta_block_awake(priv->hw, sta, false);
+ }
+
+ ieee80211_tx_status_irqsafe(priv->hw, skb);
+}
+
int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
{
struct iwl_tx_queue *txq = &priv->txq[txq_id];
struct iwl_queue *q = &txq->q;
struct iwl_tx_info *tx_info;
int nfreed = 0;
+ struct ieee80211_hdr *hdr;
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;
}
- for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
- q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
+ for (index = iwl_queue_inc_wrap(index, q->n_bd);
+ q->read_ptr != index;
+ q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
tx_info = &txq->txb[txq->q.read_ptr];
- ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb[0]);
+ iwl_tx_status(priv, tx_info->skb[0]);
+
+ hdr = (struct ieee80211_hdr *)tx_info->skb[0]->data;
+ if (hdr && ieee80211_is_data_qos(hdr->frame_control))
+ nfreed++;
tx_info->skb[0] = NULL;
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);
- nfreed++;
+ priv->cfg->ops->lib->txq_free_tfd(priv, txq);
}
return nfreed;
}
* need to be reclaimed. As result, some free space forms. If there is
* enough free space (> low mark), wake the stack that feeds us.
*/
-static void iwl_hcmd_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
+static void iwl_hcmd_queue_reclaim(struct iwl_priv *priv, int txq_id,
+ int idx, int cmd_idx)
{
struct iwl_tx_queue *txq = &priv->txq[txq_id];
struct iwl_queue *q = &txq->q;
- struct iwl_tfd_frame *bd = &txq->bd[index];
- dma_addr_t dma_addr;
- int is_odd, buf_len;
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, "
+ if ((idx >= q->n_bd) || (iwl_queue_used(q, idx) == 0)) {
+ 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);
+ idx, q->n_bd, q->write_ptr, q->read_ptr);
return;
}
- for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
- q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
+ for (idx = iwl_queue_inc_wrap(idx, q->n_bd); q->read_ptr != idx;
+ q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
- if (nfreed > 1) {
- IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
+ if (nfreed++ > 0) {
+ IWL_ERR(priv, "HCMD skipped: index (%d) %d %d\n", idx,
q->write_ptr, q->read_ptr);
queue_work(priv->workqueue, &priv->restart);
}
- is_odd = (index/2) & 0x1;
- if (is_odd) {
- dma_addr = IWL_GET_BITS(bd->pa[index], tb2_addr_lo16) |
- (IWL_GET_BITS(bd->pa[index],
- tb2_addr_hi20) << 16);
- buf_len = IWL_GET_BITS(bd->pa[index], tb2_len);
- } else {
- dma_addr = le32_to_cpu(bd->pa[index].tb1_addr);
- buf_len = IWL_GET_BITS(bd->pa[index], tb1_len);
- }
- pci_unmap_single(priv->pci_dev, dma_addr, buf_len,
- PCI_DMA_TODEVICE);
- nfreed++;
}
}
*/
void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
{
- struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
u16 sequence = le16_to_cpu(pkt->hdr.sequence);
int txq_id = SEQ_TO_QUEUE(sequence);
int index = SEQ_TO_INDEX(sequence);
- int huge = sequence & SEQ_HUGE_FRAME;
int cmd_index;
- struct iwl_cmd *cmd;
+ bool huge = !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
+ struct iwl_device_cmd *cmd;
+ struct iwl_cmd_meta *meta;
/* If a Tx command is being handled and it isn't in the actual
* command queue then there a command routing bug has been introduced
* in the queue management code. */
- if (txq_id != IWL_CMD_QUEUE_NUM)
- IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
- txq_id, pkt->hdr.cmd);
- BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
+ if (WARN(txq_id != IWL_CMD_QUEUE_NUM,
+ "wrong command queue %d, sequence 0x%X readp=%d writep=%d\n",
+ txq_id, sequence,
+ priv->txq[IWL_CMD_QUEUE_NUM].q.read_ptr,
+ priv->txq[IWL_CMD_QUEUE_NUM].q.write_ptr)) {
+ iwl_print_hex_error(priv, pkt, 32);
+ return;
+ }
cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
cmd = priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
+ meta = &priv->txq[IWL_CMD_QUEUE_NUM].meta[cmd_index];
+
+ pci_unmap_single(priv->pci_dev,
+ pci_unmap_addr(meta, mapping),
+ pci_unmap_len(meta, len),
+ PCI_DMA_BIDIRECTIONAL);
/* Input error checking is done when commands are added to queue. */
- if (cmd->meta.flags & CMD_WANT_SKB) {
- cmd->meta.source->u.skb = rxb->skb;
- rxb->skb = NULL;
- } else if (cmd->meta.u.callback &&
- !cmd->meta.u.callback(priv, cmd, rxb->skb))
- rxb->skb = NULL;
+ if (meta->flags & CMD_WANT_SKB) {
+ meta->source->reply_page = (unsigned long)rxb_addr(rxb);
+ rxb->page = NULL;
+ } else if (meta->callback)
+ meta->callback(priv, cmd, pkt);
- iwl_hcmd_queue_reclaim(priv, txq_id, index);
+ iwl_hcmd_queue_reclaim(priv, txq_id, index, cmd_index);
- if (!(cmd->meta.flags & CMD_ASYNC)) {
+ if (!(meta->flags & CMD_ASYNC)) {
clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
wake_up_interruptible(&priv->wait_command_queue);
}
int ret;
unsigned long flags;
struct iwl_tid_data *tid_data;
- DECLARE_MAC_BUF(mac);
if (likely(tid < ARRAY_SIZE(default_tid_to_tx_fifo)))
tx_fifo = default_tid_to_tx_fifo[tid];
else
return -EINVAL;
- IWL_WARNING("%s on ra = %s tid = %d\n",
- __func__, print_mac(mac, ra), tid);
+ IWL_WARN(priv, "%s on ra = %pM tid = %d\n",
+ __func__, ra, tid);
sta_id = iwl_find_station(priv, ra);
- if (sta_id == IWL_INVALID_STATION)
+ if (sta_id == IWL_INVALID_STATION) {
+ IWL_ERR(priv, "Start AGG on invalid station\n");
return -ENXIO;
+ }
+ if (unlikely(tid >= MAX_TID_COUNT))
+ return -EINVAL;
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;
}
txq_id = iwl_txq_ctx_activate_free(priv);
- if (txq_id == -1)
+ if (txq_id == -1) {
+ IWL_ERR(priv, "No free aggregation queue available\n");
return -ENXIO;
+ }
spin_lock_irqsave(&priv->sta_lock, flags);
tid_data = &priv->stations[sta_id].tid[tid];
*ssn = SEQ_TO_SN(tid_data->seq_number);
tid_data->agg.txq_id = txq_id;
+ priv->txq[txq_id].swq_id = iwl_virtual_agg_queue_num(tx_fifo, txq_id);
spin_unlock_irqrestore(&priv->sta_lock, flags);
ret = priv->cfg->ops->lib->txq_agg_enable(priv, txq_id, tx_fifo,
return ret;
if (tid_data->tfds_in_queue == 0) {
- printk(KERN_ERR "HW queue is empty\n");
+ IWL_DEBUG_HT(priv, "HW queue is empty\n");
tid_data->agg.state = IWL_AGG_ON;
- ieee80211_start_tx_ba_cb_irqsafe(priv->hw, ra, tid);
+ ieee80211_start_tx_ba_cb_irqsafe(priv->vif, ra, tid);
} else {
- IWL_DEBUG_HT("HW queue is NOT empty: %d packets in HW queue\n",
+ IWL_DEBUG_HT(priv, "HW queue is NOT empty: %d packets in HW queue\n",
tid_data->tfds_in_queue);
tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_ADDBA;
}
struct iwl_tid_data *tid_data;
int ret, write_ptr, read_ptr;
unsigned long flags;
- DECLARE_MAC_BUF(mac);
if (!ra) {
- IWL_ERROR("ra = NULL\n");
+ IWL_ERR(priv, "ra = NULL\n");
return -EINVAL;
}
+ if (unlikely(tid >= MAX_TID_COUNT))
+ return -EINVAL;
+
if (likely(tid < ARRAY_SIZE(default_tid_to_tx_fifo)))
tx_fifo_id = default_tid_to_tx_fifo[tid];
else
sta_id = iwl_find_station(priv, ra);
- if (sta_id == IWL_INVALID_STATION)
+ if (sta_id == IWL_INVALID_STATION) {
+ IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
return -ENXIO;
+ }
+
+ if (priv->stations[sta_id].tid[tid].agg.state ==
+ IWL_EMPTYING_HW_QUEUE_ADDBA) {
+ IWL_DEBUG_HT(priv, "AGG stop before setup done\n");
+ ieee80211_stop_tx_ba_cb_irqsafe(priv->vif, ra, tid);
+ priv->stations[sta_id].tid[tid].agg.state = IWL_AGG_OFF;
+ return 0;
+ }
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 ON or starting\n");
tid_data = &priv->stations[sta_id].tid[tid];
ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4;
/* The queue is not empty */
if (write_ptr != read_ptr) {
- IWL_DEBUG_HT("Stopping a non empty AGG HW QUEUE\n");
+ IWL_DEBUG_HT(priv, "Stopping a non empty AGG HW QUEUE\n");
priv->stations[sta_id].tid[tid].agg.state =
IWL_EMPTYING_HW_QUEUE_DELBA;
return 0;
}
- IWL_DEBUG_HT("HW queue is empty\n");
+ IWL_DEBUG_HT(priv, "HW queue is empty\n");
priv->stations[sta_id].tid[tid].agg.state = IWL_AGG_OFF;
spin_lock_irqsave(&priv->lock, flags);
if (ret)
return ret;
- ieee80211_stop_tx_ba_cb_irqsafe(priv->hw, ra, tid);
+ ieee80211_stop_tx_ba_cb_irqsafe(priv->vif, ra, tid);
return 0;
}
case IWL_EMPTYING_HW_QUEUE_DELBA:
/* We are reclaiming the last packet of the */
/* aggregated HW queue */
- if (txq_id == tid_data->agg.txq_id &&
- q->read_ptr == q->write_ptr) {
+ if ((txq_id == tid_data->agg.txq_id) &&
+ (q->read_ptr == q->write_ptr)) {
u16 ssn = SEQ_TO_SN(tid_data->seq_number);
int tx_fifo = default_tid_to_tx_fifo[tid];
- IWL_DEBUG_HT("HW queue empty: continue DELBA flow\n");
+ IWL_DEBUG_HT(priv, "HW queue empty: continue DELBA flow\n");
priv->cfg->ops->lib->txq_agg_disable(priv, txq_id,
ssn, tx_fifo);
tid_data->agg.state = IWL_AGG_OFF;
- ieee80211_stop_tx_ba_cb_irqsafe(priv->hw, addr, tid);
+ ieee80211_stop_tx_ba_cb_irqsafe(priv->vif, addr, tid);
}
break;
case IWL_EMPTYING_HW_QUEUE_ADDBA:
/* We are reclaiming the last packet of the queue */
if (tid_data->tfds_in_queue == 0) {
- IWL_DEBUG_HT("HW queue empty: continue ADDBA flow\n");
+ IWL_DEBUG_HT(priv, "HW queue empty: continue ADDBA flow\n");
tid_data->agg.state = IWL_AGG_ON;
- ieee80211_start_tx_ba_cb_irqsafe(priv->hw, addr, tid);
+ ieee80211_start_tx_ba_cb_irqsafe(priv->vif, addr, tid);
}
break;
}
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;
}
/* Mark that the expected block-ack response arrived */
agg->wait_for_ba = 0;
- IWL_DEBUG_TX_REPLY("BA %d %d\n", agg->start_idx, ba_resp->seq_ctl);
+ IWL_DEBUG_TX_REPLY(priv, "BA %d %d\n", agg->start_idx, ba_resp->seq_ctl);
/* Calculate shift to align block-ack bits with our Tx window bits */
- sh = agg->start_idx - SEQ_TO_INDEX(seq_ctl>>4);
+ sh = agg->start_idx - SEQ_TO_INDEX(seq_ctl >> 4);
if (sh < 0) /* tbw something is wrong with indices */
sh += 0x100;
bitmap = le64_to_cpu(ba_resp->bitmap) >> sh;
if (agg->frame_count > (64 - sh)) {
- IWL_DEBUG_TX_REPLY("more frames than bitmap size");
+ IWL_DEBUG_TX_REPLY(priv, "more frames than bitmap size");
return -1;
}
for (i = 0; i < agg->frame_count ; i++) {
ack = bitmap & (1ULL << i);
successes += !!ack;
- IWL_DEBUG_TX_REPLY("%s ON i=%d idx=%d raw=%d\n",
- ack? "ACK":"NACK", i, (agg->start_idx + i) & 0xff,
+ IWL_DEBUG_TX_REPLY(priv, "%s ON i=%d idx=%d raw=%d\n",
+ ack ? "ACK" : "NACK", i, (agg->start_idx + i) & 0xff,
agg->start_idx + i);
}
info = IEEE80211_SKB_CB(priv->txq[scd_flow].txb[agg->start_idx].skb[0]);
memset(&info->status, 0, sizeof(info->status));
- info->flags = IEEE80211_TX_STAT_ACK;
+ info->flags |= IEEE80211_TX_STAT_ACK;
info->flags |= IEEE80211_TX_STAT_AMPDU;
info->status.ampdu_ack_map = successes;
info->status.ampdu_ack_len = agg->frame_count;
iwl_hwrate_to_tx_control(priv, agg->rate_n_flags, info);
- IWL_DEBUG_TX_REPLY("Bitmap %llx\n", (unsigned long long)bitmap);
+ IWL_DEBUG_TX_REPLY(priv, "Bitmap %llx\n", (unsigned long long)bitmap);
return 0;
}
void iwl_rx_reply_compressed_ba(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb)
{
- struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
+ struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_compressed_ba_resp *ba_resp = &pkt->u.compressed_ba;
- int index;
struct iwl_tx_queue *txq = NULL;
struct iwl_ht_agg *agg;
- DECLARE_MAC_BUF(mac);
+ int index;
+ int sta_id;
+ int tid;
/* "flow" corresponds to Tx queue */
u16 scd_flow = le16_to_cpu(ba_resp->scd_flow);
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");
+ IWL_ERR(priv,
+ "BUG_ON scd_flow is bigger than number of queues\n");
return;
}
txq = &priv->txq[scd_flow];
- agg = &priv->stations[ba_resp->sta_id].tid[ba_resp->tid].agg;
+ sta_id = ba_resp->sta_id;
+ tid = ba_resp->tid;
+ agg = &priv->stations[sta_id].tid[tid].agg;
/* Find index just before block-ack window */
index = iwl_queue_dec_wrap(ba_resp_scd_ssn & 0xff, txq->q.n_bd);
/* TODO: Need to get this copy more safely - now good for debug */
- IWL_DEBUG_TX_REPLY("REPLY_COMPRESSED_BA [%d]Received from %s, "
+ IWL_DEBUG_TX_REPLY(priv, "REPLY_COMPRESSED_BA [%d] Received from %pM, "
"sta_id = %d\n",
agg->wait_for_ba,
- print_mac(mac, (u8 *) &ba_resp->sta_addr_lo32),
+ (u8 *) &ba_resp->sta_addr_lo32,
ba_resp->sta_id);
- IWL_DEBUG_TX_REPLY("TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = "
+ IWL_DEBUG_TX_REPLY(priv, "TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = "
"%d, scd_ssn = %d\n",
ba_resp->tid,
ba_resp->seq_ctl,
(unsigned long long)le64_to_cpu(ba_resp->bitmap),
ba_resp->scd_flow,
ba_resp->scd_ssn);
- IWL_DEBUG_TX_REPLY("DAT start_idx = %d, bitmap = 0x%llx \n",
+ IWL_DEBUG_TX_REPLY(priv, "DAT start_idx = %d, bitmap = 0x%llx \n",
agg->start_idx,
(unsigned long long)agg->bitmap);
* transmitted ... if not, it's too late anyway). */
if (txq->q.read_ptr != (ba_resp_scd_ssn & 0xff)) {
/* calculate mac80211 ampdu sw queue to wake */
- int ampdu_q =
- scd_flow - priv->hw_params.first_ampdu_q + priv->hw->queues;
int freed = iwl_tx_queue_reclaim(priv, scd_flow, index);
- priv->stations[ba_resp->sta_id].
- tid[ba_resp->tid].tfds_in_queue -= freed;
- if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
- priv->mac80211_registered &&
- agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)
- ieee80211_wake_queue(priv->hw, ampdu_q);
-
- iwl_txq_check_empty(priv, ba_resp->sta_id,
- ba_resp->tid, scd_flow);
+ iwl_free_tfds_in_queue(priv, sta_id, tid, freed);
+
+ if ((iwl_queue_space(&txq->q) > txq->q.low_mark) &&
+ priv->mac80211_registered &&
+ (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA))
+ iwl_wake_queue(priv, txq->swq_id);
+
+ iwl_txq_check_empty(priv, sta_id, tid, scd_flow);
}
}
EXPORT_SYMBOL(iwl_rx_reply_compressed_ba);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff