iwlwifi: arrange max number of Tx queues

This patch increases the max possible number of Tx queues, but leaves
current used number of queues as HW dependent

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

6 files changed, 17 insertions, 13 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-hw.h b/drivers/net/wireless/iwlwifi/iwl-3945-hw.h
index 368da9852aab..ad612a8719f4 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945-hw.h
+++ b/drivers/net/wireless/iwlwifi/iwl-3945-hw.h
@@ -456,7 +456,7 @@ struct iwl3945_eeprom {
 /* Size of uCode instruction memory in bootstrap state machine */
 #define IWL_MAX_BSM_SIZE ALM_RTC_INST_SIZE
 
-#define IWL_MAX_NUM_QUEUES      8
+#define IWL39_MAX_NUM_QUEUES    8
 
 static inline int iwl3945_hw_valid_rtc_data_addr(u32 addr)
 {
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.h b/drivers/net/wireless/iwlwifi/iwl-3945.h
index 3dc7f0fbf02f..45c1c5533bf0 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.h
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.h
@@ -687,6 +687,8 @@ enum {
 
 #endif
 
+#define IWL_MAX_NUM_QUEUES IWL39_MAX_NUM_QUEUES
+
 struct iwl3945_priv {
 
         /* ieee device used by generic ieee processing code */
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965-hw.h b/drivers/net/wireless/iwlwifi/iwl-4965-hw.h
index 3d098da25fc9..1a66b508a8ea 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965-hw.h
+++ b/drivers/net/wireless/iwlwifi/iwl-4965-hw.h
@@ -1385,10 +1385,10 @@ static inline __le32 iwl4965_hw_set_rate_n_flags(u8 rate, u16 flags)
  * up to 7 DMA channels (FIFOs).  Each Tx queue is supported by a circular array
  * in DRAM containing 256 Transmit Frame Descriptors (TFDs).
  */
-#define IWL4965_MAX_WIN_SIZE              64
-#define IWL4965_QUEUE_SIZE               256
-#define IWL4965_NUM_FIFOS                  7
-#define IWL_MAX_NUM_QUEUES                16
+#define IWL4965_MAX_WIN_SIZE    64
+#define IWL4965_QUEUE_SIZE      256
+#define IWL4965_NUM_FIFOS       7
+#define IWL4965_MAX_NUM_QUEUES  16
 
 
 /**
@@ -1553,7 +1553,7 @@ struct iwl4965_sched_queue_byte_cnt_tbl {
  */
 struct iwl4965_shared {
         struct iwl4965_sched_queue_byte_cnt_tbl
-         queues_byte_cnt_tbls[IWL_MAX_NUM_QUEUES];
+         queues_byte_cnt_tbls[IWL4965_MAX_NUM_QUEUES];
         __le32 rb_closed;
 
         /* __le32 rb_closed_stts_rb_num:12; */
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index 2e747129f6b0..b072523c63ee 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -46,7 +46,7 @@
 
 /* module parameters */
 static struct iwl_mod_params iwl4965_mod_params = {
-        .num_of_queues = IWL_MAX_NUM_QUEUES,
+        .num_of_queues = IWL4965_MAX_NUM_QUEUES,
         .enable_qos = 1,
         .amsdu_size_8K = 1,
         /* the rest are 0 by default */
@@ -2021,10 +2021,10 @@ int iwl4965_alive_notify(struct iwl_priv *priv)
 int iwl4965_hw_set_hw_params(struct iwl_priv *priv)
 {
 
-        if ((priv->cfg->mod_params->num_of_queues > IWL_MAX_NUM_QUEUES) ||
+        if ((priv->cfg->mod_params->num_of_queues > IWL4965_MAX_NUM_QUEUES) ||
             (priv->cfg->mod_params->num_of_queues < IWL_MIN_NUM_QUEUES)) {
                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
-                          IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
+                          IWL_MIN_NUM_QUEUES, IWL4965_MAX_NUM_QUEUES);
                 return -EINVAL;
         }
 
@@ -4362,7 +4362,7 @@ static void iwl4965_rx_reply_compressed_ba(struct iwl_priv *priv,
          * (in Tx queue's circular buffer) of first TFD/frame in window */
         u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn);
 
-        if (scd_flow >= ARRAY_SIZE(priv->txq)) {
+        if (scd_flow >= priv->hw_params.max_txq_num) {
                 IWL_ERROR("BUG_ON scd_flow is bigger than number of queues");
                 return;
         }
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.h b/drivers/net/wireless/iwlwifi/iwl-4965.h
index ddcbad59092b..9ed13cb0a2a9 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.h
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.h
@@ -941,6 +941,8 @@ enum {
 
 #endif
 
+#define IWL_MAX_NUM_QUEUES      20 /* FIXME: do dynamic allocation */
+
 struct iwl_priv {
 
         /* ieee device used by generic ieee processing code */
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index 29a9ecdcbf35..1a5678fe4224 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -70,7 +70,7 @@ static int iwl3945_param_disable;  /* def: 0 = enable radio */
 static int iwl3945_param_antenna;  /* def: 0 = both antennas (use diversity) */
 int iwl3945_param_hwcrypto;        /* def: 0 = use software encryption */
 static int iwl3945_param_qos_enable = 1; /* def: 1 = use quality of service */
-int iwl3945_param_queues_num = IWL_MAX_NUM_QUEUES; /* def: 8 Tx queues */
+int iwl3945_param_queues_num = IWL39_MAX_NUM_QUEUES; /* def: 8 Tx queues */
 
 /*
  * module name, copyright, version, etc.
@@ -7974,10 +7974,10 @@ static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
                 iwl3945_hw_ops.hw_scan = NULL;
         }
 
-        if ((iwl3945_param_queues_num > IWL_MAX_NUM_QUEUES) ||
+        if ((iwl3945_param_queues_num > IWL39_MAX_NUM_QUEUES) ||
             (iwl3945_param_queues_num < IWL_MIN_NUM_QUEUES)) {
                 IWL_ERROR("invalid queues_num, should be between %d and %d\n",
-                          IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES);
+                          IWL_MIN_NUM_QUEUES, IWL39_MAX_NUM_QUEUES);
                 err = -EINVAL;
                 goto out;
         }