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-rw-r--r--drivers/net/wireless/iwlwifi/iwl-agn-calib.c2
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-agn-lib.c2
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-agn.c28
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-commands.h5
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-dev.h46
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-devtrace.h17
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-sv-open.c1
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-tx.c231
8 files changed, 180 insertions, 152 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-calib.c b/drivers/net/wireless/iwlwifi/iwl-agn-calib.c
index 30e11c7c414..d39efcce8ba 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-calib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-calib.c
@@ -87,7 +87,6 @@ int iwl_send_calib_results(struct iwl_priv *priv)
struct iwl_host_cmd hcmd = {
.id = REPLY_PHY_CALIBRATION_CMD,
- .flags = CMD_SIZE_HUGE,
};
for (i = 0; i < IWL_CALIB_MAX; i++) {
@@ -95,6 +94,7 @@ int iwl_send_calib_results(struct iwl_priv *priv)
priv->calib_results[i].buf) {
hcmd.len[0] = priv->calib_results[i].buf_len;
hcmd.data[0] = priv->calib_results[i].buf;
+ hcmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
ret = iwl_send_cmd_sync(priv, &hcmd);
if (ret) {
IWL_ERR(priv, "Error %d iteration %d\n",
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index 576f45e9ab9..f803fb62f8b 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -1141,7 +1141,6 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
struct iwl_host_cmd cmd = {
.id = REPLY_SCAN_CMD,
.len = { sizeof(struct iwl_scan_cmd), },
- .flags = CMD_SIZE_HUGE,
};
struct iwl_scan_cmd *scan;
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
@@ -1428,6 +1427,7 @@ int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
cmd.len[0] += le16_to_cpu(scan->tx_cmd.len) +
scan->channel_count * sizeof(struct iwl_scan_channel);
cmd.data[0] = scan;
+ cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
scan->len = cpu_to_le16(cmd.len[0]);
/* set scan bit here for PAN params */
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 2bb08d7e067..675b9a644a0 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -134,12 +134,10 @@ int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
struct iwl_tx_beacon_cmd *tx_beacon_cmd;
struct iwl_host_cmd cmd = {
.id = REPLY_TX_BEACON,
- .flags = CMD_SIZE_HUGE,
};
u32 frame_size;
u32 rate_flags;
u32 rate;
- int err;
/*
* We have to set up the TX command, the TX Beacon command, and the
@@ -156,17 +154,15 @@ int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
if (WARN_ON(!priv->beacon_skb))
return -EINVAL;
- /* Allocate beacon memory */
- tx_beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd) + priv->beacon_skb->len,
- GFP_KERNEL);
+ /* Allocate beacon command */
+ if (!priv->beacon_cmd)
+ priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
+ tx_beacon_cmd = priv->beacon_cmd;
if (!tx_beacon_cmd)
return -ENOMEM;
frame_size = priv->beacon_skb->len;
- /* Set up TX beacon contents */
- memcpy(tx_beacon_cmd->frame, priv->beacon_skb->data, frame_size);
-
/* Set up TX command fields */
tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
@@ -175,7 +171,7 @@ int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
/* Set up TX beacon command fields */
- iwl_set_beacon_tim(priv, tx_beacon_cmd, (u8 *)tx_beacon_cmd->frame,
+ iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
frame_size);
/* Set up packet rate and flags */
@@ -189,15 +185,14 @@ int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
rate_flags);
/* Submit command */
- cmd.len[0] = sizeof(*tx_beacon_cmd) + frame_size;
+ cmd.len[0] = sizeof(*tx_beacon_cmd);
cmd.data[0] = tx_beacon_cmd;
+ cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
+ cmd.len[1] = frame_size;
+ cmd.data[1] = priv->beacon_skb->data;
+ cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
- err = iwl_send_cmd_sync(priv, &cmd);
-
- /* Free temporary storage */
- kfree(tx_beacon_cmd);
-
- return err;
+ return iwl_send_cmd_sync(priv, &cmd);
}
static void iwl_bg_beacon_update(struct work_struct *work)
@@ -3246,6 +3241,7 @@ static void iwl_uninit_drv(struct iwl_priv *priv)
iwlcore_free_geos(priv);
iwl_free_channel_map(priv);
kfree(priv->scan_cmd);
+ kfree(priv->beacon_cmd);
}
struct ieee80211_ops iwlagn_hw_ops = {
diff --git a/drivers/net/wireless/iwlwifi/iwl-commands.h b/drivers/net/wireless/iwlwifi/iwl-commands.h
index 5fdad653211..6ee5f1aa555 100644
--- a/drivers/net/wireless/iwlwifi/iwl-commands.h
+++ b/drivers/net/wireless/iwlwifi/iwl-commands.h
@@ -205,7 +205,6 @@ enum {
#define QUEUE_TO_SEQ(q) (((q) & 0x1f) << 8)
#define SEQ_TO_INDEX(s) ((s) & 0xff)
#define INDEX_TO_SEQ(i) ((i) & 0xff)
-#define SEQ_HUGE_FRAME cpu_to_le16(0x4000)
#define SEQ_RX_FRAME cpu_to_le16(0x8000)
/**
@@ -234,9 +233,7 @@ struct iwl_cmd_header {
*
* 0:7 tfd index - position within TX queue
* 8:12 TX queue id
- * 13 reserved
- * 14 huge - driver sets this to indicate command is in the
- * 'huge' storage at the end of the command buffers
+ * 13:14 reserved
* 15 unsolicited RX or uCode-originated notification
*/
__le16 sequence;
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 38254bdfabb..3e3b8b8939d 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -110,8 +110,6 @@ struct iwl_cmd_meta {
struct iwl_device_cmd *cmd,
struct iwl_rx_packet *pkt);
- /* The CMD_SIZE_HUGE flag bit indicates that the command
- * structure is stored at the end of the shared queue memory. */
u32 flags;
DEFINE_DMA_UNMAP_ADDR(mapping);
@@ -121,7 +119,23 @@ struct iwl_cmd_meta {
/*
* Generic queue structure
*
- * Contains common data for Rx and Tx queues
+ * Contains common data for Rx and Tx queues.
+ *
+ * Note the difference between n_bd and n_window: the hardware
+ * always assumes 256 descriptors, so n_bd is always 256 (unless
+ * there might be HW changes in the future). For the normal TX
+ * queues, n_window, which is the size of the software queue data
+ * is also 256; however, for the command queue, n_window is only
+ * 32 since we don't need so many commands pending. Since the HW
+ * still uses 256 BDs for DMA though, n_bd stays 256. As a result,
+ * the software buffers (in the variables @meta, @txb in struct
+ * iwl_tx_queue) only have 32 entries, while the HW buffers (@tfds
+ * in the same struct) have 256.
+ * This means that we end up with the following:
+ * HW entries: | 0 | ... | N * 32 | ... | N * 32 + 31 | ... | 255 |
+ * SW entries: | 0 | ... | 31 |
+ * where N is a number between 0 and 7. This means that the SW
+ * data is a window overlayed over the HW queue.
*/
struct iwl_queue {
int n_bd; /* number of BDs in this queue */
@@ -163,7 +177,7 @@ struct iwl_tx_info {
struct iwl_tx_queue {
struct iwl_queue q;
- void *tfds;
+ struct iwl_tfd *tfds;
struct iwl_device_cmd **cmd;
struct iwl_cmd_meta *meta;
struct iwl_tx_info *txb;
@@ -245,7 +259,6 @@ enum {
CMD_SYNC = 0,
CMD_SIZE_NORMAL = 0,
CMD_NO_SKB = 0,
- CMD_SIZE_HUGE = (1 << 0),
CMD_ASYNC = (1 << 1),
CMD_WANT_SKB = (1 << 2),
CMD_MAPPED = (1 << 3),
@@ -257,8 +270,8 @@ enum {
* struct iwl_device_cmd
*
* For allocation of the command and tx queues, this establishes the overall
- * size of the largest command we send to uCode, except for a scan command
- * (which is relatively huge; space is allocated separately).
+ * size of the largest command we send to uCode, except for commands that
+ * aren't fully copied and use other TFD space.
*/
struct iwl_device_cmd {
struct iwl_cmd_header hdr; /* uCode API */
@@ -275,7 +288,11 @@ struct iwl_device_cmd {
#define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd))
-#define IWL_MAX_CMD_TFDS 1
+#define IWL_MAX_CMD_TFDS 2
+
+enum iwl_hcmd_dataflag {
+ IWL_HCMD_DFL_NOCOPY = BIT(0),
+};
struct iwl_host_cmd {
const void *data[IWL_MAX_CMD_TFDS];
@@ -285,6 +302,7 @@ struct iwl_host_cmd {
struct iwl_rx_packet *pkt);
u32 flags;
u16 len[IWL_MAX_CMD_TFDS];
+ u8 dataflags[IWL_MAX_CMD_TFDS];
u8 id;
};
@@ -687,17 +705,8 @@ static inline int iwl_queue_used(const struct iwl_queue *q, int i)
}
-static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge)
+static inline u8 get_cmd_index(struct iwl_queue *q, u32 index)
{
- /*
- * This is for init calibration result and scan command which
- * required buffer > TFD_MAX_PAYLOAD_SIZE,
- * the big buffer at end of command array
- */
- if (is_huge)
- return q->n_window; /* must be power of 2 */
-
- /* Otherwise, use normal size buffers */
return index & (q->n_window - 1);
}
@@ -1451,6 +1460,7 @@ struct iwl_priv {
struct work_struct beacon_update;
struct iwl_rxon_context *beacon_ctx;
struct sk_buff *beacon_skb;
+ void *beacon_cmd;
struct work_struct tt_work;
struct work_struct ct_enter;
diff --git a/drivers/net/wireless/iwlwifi/iwl-devtrace.h b/drivers/net/wireless/iwlwifi/iwl-devtrace.h
index f00172cb8a6..fc131867c10 100644
--- a/drivers/net/wireless/iwlwifi/iwl-devtrace.h
+++ b/drivers/net/wireless/iwlwifi/iwl-devtrace.h
@@ -137,20 +137,27 @@ TRACE_EVENT(iwlwifi_dev_ucode_wrap_event,
#define TRACE_SYSTEM iwlwifi
TRACE_EVENT(iwlwifi_dev_hcmd,
- TP_PROTO(struct iwl_priv *priv, void *hcmd, size_t len, u32 flags),
- TP_ARGS(priv, hcmd, len, flags),
+ TP_PROTO(struct iwl_priv *priv, u32 flags,
+ const void *hcmd0, size_t len0,
+ const void *hcmd1, size_t len1,
+ const void *hcmd2, size_t len2),
+ TP_ARGS(priv, flags, hcmd0, len0, hcmd1, len1, hcmd2, len2),
TP_STRUCT__entry(
PRIV_ENTRY
- __dynamic_array(u8, hcmd, len)
+ __dynamic_array(u8, hcmd0, len0)
+ __dynamic_array(u8, hcmd1, len1)
+ __dynamic_array(u8, hcmd2, len2)
__field(u32, flags)
),
TP_fast_assign(
PRIV_ASSIGN;
- memcpy(__get_dynamic_array(hcmd), hcmd, len);
+ memcpy(__get_dynamic_array(hcmd0), hcmd0, len0);
+ memcpy(__get_dynamic_array(hcmd1), hcmd1, len1);
+ memcpy(__get_dynamic_array(hcmd2), hcmd2, len2);
__entry->flags = flags;
),
TP_printk("[%p] hcmd %#.2x (%ssync)",
- __entry->priv, ((u8 *)__get_dynamic_array(hcmd))[0],
+ __entry->priv, ((u8 *)__get_dynamic_array(hcmd0))[0],
__entry->flags & CMD_ASYNC ? "a" : "")
);
diff --git a/drivers/net/wireless/iwlwifi/iwl-sv-open.c b/drivers/net/wireless/iwlwifi/iwl-sv-open.c
index 01a8ec9cd6b..dd2904aa9be 100644
--- a/drivers/net/wireless/iwlwifi/iwl-sv-open.c
+++ b/drivers/net/wireless/iwlwifi/iwl-sv-open.c
@@ -200,6 +200,7 @@ static int iwl_testmode_ucode(struct ieee80211_hw *hw, struct nlattr **tb)
cmd.id = nla_get_u8(tb[IWL_TM_ATTR_UCODE_CMD_ID]);
cmd.data[0] = nla_data(tb[IWL_TM_ATTR_UCODE_CMD_DATA]);
cmd.len[0] = nla_len(tb[IWL_TM_ATTR_UCODE_CMD_DATA]);
+ cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
IWL_INFO(priv, "testmode ucode command ID 0x%x, flags 0x%x,"
" len %d\n", cmd.id, cmd.flags, cmd.len[0]);
/* ok, let's submit the command to ucode */
diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c
index a47558f0ee3..2f6b38cfcc1 100644
--- a/drivers/net/wireless/iwlwifi/iwl-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-tx.c
@@ -125,25 +125,13 @@ static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
return tfd->num_tbs & 0x1f;
}
-/**
- * iwlagn_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)
- */
-void iwlagn_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+static void iwlagn_unmap_tfd(struct iwl_priv *priv, struct iwl_cmd_meta *meta,
+ struct iwl_tfd *tfd)
{
- struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
- 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);
@@ -156,14 +144,30 @@ void iwlagn_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
/* Unmap tx_cmd */
if (num_tbs)
pci_unmap_single(dev,
- dma_unmap_addr(&txq->meta[index], mapping),
- dma_unmap_len(&txq->meta[index], len),
+ dma_unmap_addr(meta, mapping),
+ dma_unmap_len(meta, len),
PCI_DMA_BIDIRECTIONAL);
/* 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);
+}
+
+/**
+ * iwlagn_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)
+ */
+void iwlagn_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+{
+ struct iwl_tfd *tfd_tmp = txq->tfds;
+ int index = txq->q.read_ptr;
+
+ iwlagn_unmap_tfd(priv, &txq->meta[index], &tfd_tmp[index]);
/* free SKB */
if (txq->txb) {
@@ -189,7 +193,7 @@ int iwlagn_txq_attach_buf_to_tfd(struct iwl_priv *priv,
u32 num_tbs;
q = &txq->q;
- tfd_tmp = (struct iwl_tfd *)txq->tfds;
+ tfd_tmp = txq->tfds;
tfd = &tfd_tmp[q->write_ptr];
if (reset)
@@ -303,7 +307,7 @@ void iwl_cmd_queue_unmap(struct iwl_priv *priv)
return;
while (q->read_ptr != q->write_ptr) {
- i = get_cmd_index(q, q->read_ptr, 0);
+ i = get_cmd_index(q, q->read_ptr);
if (txq->meta[i].flags & CMD_MAPPED) {
pci_unmap_single(priv->pci_dev,
@@ -315,15 +319,6 @@ void iwl_cmd_queue_unmap(struct iwl_priv *priv)
q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd);
}
-
- i = q->n_window;
- if (txq->meta[i].flags & CMD_MAPPED) {
- pci_unmap_single(priv->pci_dev,
- dma_unmap_addr(&txq->meta[i], mapping),
- dma_unmap_len(&txq->meta[i], len),
- PCI_DMA_BIDIRECTIONAL);
- txq->meta[i].flags = 0;
- }
}
/**
@@ -343,7 +338,7 @@ void iwl_cmd_queue_free(struct iwl_priv *priv)
iwl_cmd_queue_unmap(priv);
/* De-alloc array of command/tx buffers */
- for (i = 0; i <= TFD_CMD_SLOTS; i++)
+ for (i = 0; i < TFD_CMD_SLOTS; i++)
kfree(txq->cmd[i]);
/* De-alloc circular buffer of TFDs */
@@ -483,33 +478,17 @@ int iwl_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq,
{
int i, len;
int ret;
- int actual_slots = slots_num;
-
- /*
- * Alloc buffer array for commands (Tx or other types of commands).
- * For the command queue (#4/#9), allocate command space + one big
- * command for scan, since scan command is very huge; the system will
- * not have two scans at the same time, so only one is needed.
- * For normal Tx queues (all other queues), no super-size command
- * space is needed.
- */
- if (txq_id == priv->cmd_queue)
- actual_slots++;
- txq->meta = kzalloc(sizeof(struct iwl_cmd_meta) * actual_slots,
+ txq->meta = kzalloc(sizeof(struct iwl_cmd_meta) * slots_num,
GFP_KERNEL);
- txq->cmd = kzalloc(sizeof(struct iwl_device_cmd *) * actual_slots,
+ txq->cmd = kzalloc(sizeof(struct iwl_device_cmd *) * slots_num,
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_CMD_SIZE;
-
+ for (i = 0; i < slots_num; i++) {
txq->cmd[i] = kmalloc(len, GFP_KERNEL);
if (!txq->cmd[i])
goto err;
@@ -544,7 +523,7 @@ int iwl_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq,
return 0;
err:
- for (i = 0; i < actual_slots; i++)
+ for (i = 0; i < slots_num; i++)
kfree(txq->cmd[i]);
out_free_arrays:
kfree(txq->meta);
@@ -592,23 +571,44 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
dma_addr_t phys_addr;
unsigned long flags;
u32 idx;
- u16 fix_size;
+ u16 copy_size, cmd_size;
bool is_ct_kill = false;
+ bool had_nocopy = false;
+ int i;
+ u8 *cmd_dest;
+#ifdef CONFIG_IWLWIFI_DEVICE_TRACING
+ const void *trace_bufs[IWL_MAX_CMD_TFDS + 1] = {};
+ int trace_lens[IWL_MAX_CMD_TFDS + 1] = {};
+ int trace_idx;
+#endif
- fix_size = (u16)(cmd->len[0] + sizeof(out_cmd->hdr));
+ copy_size = sizeof(out_cmd->hdr);
+ cmd_size = sizeof(out_cmd->hdr);
+
+ /* need one for the header if the first is NOCOPY */
+ BUILD_BUG_ON(IWL_MAX_CMD_TFDS > IWL_NUM_OF_TBS - 1);
+
+ for (i = 0; i < IWL_MAX_CMD_TFDS; i++) {
+ if (!cmd->len[i])
+ continue;
+ if (cmd->dataflags[i] & IWL_HCMD_DFL_NOCOPY) {
+ had_nocopy = true;
+ } else {
+ /* NOCOPY must not be followed by normal! */
+ if (WARN_ON(had_nocopy))
+ return -EINVAL;
+ copy_size += cmd->len[i];
+ }
+ cmd_size += cmd->len[i];
+ }
/*
* If any of the command structures end up being larger than
- * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then
- * we will need to increase the size of the TFD entries
- * Also, check to see if command buffer should not exceed the size
- * of device_cmd and max_cmd_size.
+ * the TFD_MAX_PAYLOAD_SIZE and they aren't dynamically
+ * allocated into separate TFDs, then we will need to
+ * increase the size of the buffers.
*/
- if (WARN_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) &&
- !(cmd->flags & CMD_SIZE_HUGE)))
- return -EINVAL;
-
- if (WARN_ON(fix_size > IWL_MAX_CMD_SIZE))
+ if (WARN_ON(copy_size > TFD_MAX_PAYLOAD_SIZE))
return -EINVAL;
if (iwl_is_rfkill(priv) || iwl_is_ctkill(priv)) {
@@ -617,14 +617,6 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
return -EIO;
}
- /*
- * As we only have a single huge buffer, check that the command
- * is synchronous (otherwise buffers could end up being reused).
- */
-
- if (WARN_ON((cmd->flags & CMD_ASYNC) && (cmd->flags & CMD_SIZE_HUGE)))
- return -EINVAL;
-
spin_lock_irqsave(&priv->hcmd_lock, flags);
if (iwl_queue_space(q) < ((cmd->flags & CMD_ASYNC) ? 2 : 1)) {
@@ -639,7 +631,7 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
return -ENOSPC;
}
- idx = get_cmd_index(q, q->write_ptr, cmd->flags & CMD_SIZE_HUGE);
+ idx = get_cmd_index(q, q->write_ptr);
out_cmd = txq->cmd[idx];
out_meta = &txq->meta[idx];
@@ -654,55 +646,84 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
if (cmd->flags & CMD_ASYNC)
out_meta->callback = cmd->callback;
- out_cmd->hdr.cmd = cmd->id;
- memcpy(&out_cmd->cmd.payload, cmd->data[0], cmd->len[0]);
-
- /* At this point, the out_cmd now has all of the incoming cmd
- * information */
+ /* set up the header */
+ out_cmd->hdr.cmd = cmd->id;
out_cmd->hdr.flags = 0;
out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(priv->cmd_queue) |
- INDEX_TO_SEQ(q->write_ptr));
- if (cmd->flags & CMD_SIZE_HUGE)
- out_cmd->hdr.sequence |= SEQ_HUGE_FRAME;
-
-#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, priv->cmd_queue);
- 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, priv->cmd_queue);
+ INDEX_TO_SEQ(q->write_ptr));
+
+ /* and copy the data that needs to be copied */
+
+ cmd_dest = &out_cmd->cmd.payload[0];
+ for (i = 0; i < IWL_MAX_CMD_TFDS; i++) {
+ if (!cmd->len[i])
+ continue;
+ if (cmd->dataflags[i] & IWL_HCMD_DFL_NOCOPY)
+ break;
+ memcpy(cmd_dest, cmd->data[i], cmd->len[i]);
+ cmd_dest += cmd->len[i];
}
-#endif
+
+ 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), cmd_size,
+ q->write_ptr, idx, priv->cmd_queue);
+
phys_addr = pci_map_single(priv->pci_dev, &out_cmd->hdr,
- fix_size, PCI_DMA_BIDIRECTIONAL);
+ copy_size, PCI_DMA_BIDIRECTIONAL);
if (unlikely(pci_dma_mapping_error(priv->pci_dev, phys_addr))) {
idx = -ENOMEM;
goto out;
}
dma_unmap_addr_set(out_meta, mapping, phys_addr);
- dma_unmap_len_set(out_meta, len, fix_size);
+ dma_unmap_len_set(out_meta, len, copy_size);
+
+ iwlagn_txq_attach_buf_to_tfd(priv, txq, phys_addr, copy_size, 1);
+#ifdef CONFIG_IWLWIFI_DEVICE_TRACING
+ trace_bufs[0] = &out_cmd->hdr;
+ trace_lens[0] = copy_size;
+ trace_idx = 1;
+#endif
+
+ for (i = 0; i < IWL_MAX_CMD_TFDS; i++) {
+ if (!cmd->len[i])
+ continue;
+ if (!(cmd->dataflags[i] & IWL_HCMD_DFL_NOCOPY))
+ continue;
+ phys_addr = pci_map_single(priv->pci_dev, (void *)cmd->data[i],
+ cmd->len[i], PCI_DMA_TODEVICE);
+ if (pci_dma_mapping_error(priv->pci_dev, phys_addr)) {
+ iwlagn_unmap_tfd(priv, out_meta,
+ &txq->tfds[q->write_ptr]);
+ idx = -ENOMEM;
+ goto out;
+ }
+
+ iwlagn_txq_attach_buf_to_tfd(priv, txq, phys_addr,
+ cmd->len[i], 0);
+#ifdef CONFIG_IWLWIFI_DEVICE_TRACING
+ trace_bufs[trace_idx] = cmd->data[i];
+ trace_lens[trace_idx] = cmd->len[i];
+ trace_idx++;
+#endif
+ }
out_meta->flags = cmd->flags | CMD_MAPPED;
txq->need_update = 1;
- trace_iwlwifi_dev_hcmd(priv, &out_cmd->hdr, fix_size, cmd->flags);
-
- iwlagn_txq_attach_buf_to_tfd(priv, txq, phys_addr, fix_size, 1);
+ /* check that tracing gets all possible blocks */
+ BUILD_BUG_ON(IWL_MAX_CMD_TFDS + 1 != 3);
+#ifdef CONFIG_IWLWIFI_DEVICE_TRACING
+ trace_iwlwifi_dev_hcmd(priv, cmd->flags,
+ trace_bufs[0], trace_lens[0],
+ trace_bufs[1], trace_lens[1],
+ trace_bufs[2], trace_lens[2]);
+#endif
/* Increment and update queue's write index */
q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
@@ -761,7 +782,6 @@ void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
int txq_id = SEQ_TO_QUEUE(sequence);
int index = SEQ_TO_INDEX(sequence);
int cmd_index;
- bool huge = !!(pkt->hdr.sequence & SEQ_HUGE_FRAME);
struct iwl_device_cmd *cmd;
struct iwl_cmd_meta *meta;
struct iwl_tx_queue *txq = &priv->txq[priv->cmd_queue];
@@ -779,14 +799,11 @@ void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
return;
}
- cmd_index = get_cmd_index(&txq->q, index, huge);
+ cmd_index = get_cmd_index(&txq->q, index);
cmd = txq->cmd[cmd_index];
meta = &txq->meta[cmd_index];
- pci_unmap_single(priv->pci_dev,
- dma_unmap_addr(meta, mapping),
- dma_unmap_len(meta, len),
- PCI_DMA_BIDIRECTIONAL);
+ iwlagn_unmap_tfd(priv, meta, &txq->tfds[index]);
/* Input error checking is done when commands are added to queue. */
if (meta->flags & CMD_WANT_SKB) {
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-28 12:18:15 +0000