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path: root/drivers/net/wireless/iwlwifi
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Diffstat (limited to 'drivers/net/wireless/iwlwifi')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-agn.c40
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-core.c8
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-csr.h5
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-dev.h1
-rw-r--r--drivers/net/wireless/iwlwifi/iwl3945-base.c5
5 files changed, 46 insertions, 13 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index be1058bdc4c..889574d852b 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -1107,9 +1107,9 @@ static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
priv->isr_stats.unhandled++;
}
- if (inta & ~CSR_INI_SET_MASK) {
+ if (inta & ~(priv->inta_mask)) {
IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
- inta & ~CSR_INI_SET_MASK);
+ inta & ~priv->inta_mask);
IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
}
@@ -1260,12 +1260,37 @@ static void iwl_irq_tasklet(struct iwl_priv *priv)
/* All uCode command responses, including Tx command responses,
* Rx "responses" (frame-received notification), and other
* notifications from uCode come through here*/
- if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
+ if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
+ CSR_INT_BIT_RX_PERIODIC)) {
IWL_DEBUG_ISR(priv, "Rx interrupt\n");
- iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_RX_MASK);
+ if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
+ handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
+ iwl_write32(priv, CSR_FH_INT_STATUS,
+ CSR49_FH_INT_RX_MASK);
+ }
+ if (inta & CSR_INT_BIT_RX_PERIODIC) {
+ handled |= CSR_INT_BIT_RX_PERIODIC;
+ iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
+ }
+ /* Sending RX interrupt require many steps to be done in the
+ * the device:
+ * 1- write interrupt to current index in ICT table.
+ * 2- dma RX frame.
+ * 3- update RX shared data to indicate last write index.
+ * 4- send interrupt.
+ * This could lead to RX race, driver could receive RX interrupt
+ * but the shared data changes does not reflect this.
+ * this could lead to RX race, RX periodic will solve this race
+ */
+ iwl_write32(priv, CSR_INT_PERIODIC_REG,
+ CSR_INT_PERIODIC_DIS);
iwl_rx_handle(priv);
+ /* Only set RX periodic if real RX is received. */
+ if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
+ iwl_write32(priv, CSR_INT_PERIODIC_REG,
+ CSR_INT_PERIODIC_ENA);
+
priv->isr_stats.rx++;
- handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
}
if (inta & CSR_INT_BIT_FH_TX) {
@@ -1283,9 +1308,9 @@ static void iwl_irq_tasklet(struct iwl_priv *priv)
priv->isr_stats.unhandled++;
}
- if (inta & ~CSR_INI_SET_MASK) {
+ if (inta & ~(priv->inta_mask)) {
IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
- inta & ~CSR_INI_SET_MASK);
+ inta & ~priv->inta_mask);
}
@@ -2808,6 +2833,7 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
priv->cfg = cfg;
priv->pci_dev = pdev;
+ priv->inta_mask = CSR_INI_SET_MASK;
#ifdef CONFIG_IWLWIFI_DEBUG
priv->debug_level = priv->cfg->mod_params->debug;
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index 12f018392a4..e93ddb74457 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -1500,7 +1500,7 @@ void iwl_enable_interrupts(struct iwl_priv *priv)
{
IWL_DEBUG_ISR(priv, "Enabling interrupts\n");
set_bit(STATUS_INT_ENABLED, &priv->status);
- iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
+ iwl_write32(priv, CSR_INT_MASK, priv->inta_mask);
}
EXPORT_SYMBOL(iwl_enable_interrupts);
@@ -1554,6 +1554,8 @@ int iwl_alloc_isr_ict(struct iwl_priv *priv)
memset(priv->ict_tbl_vir,0, (sizeof(u32) * ICT_COUNT) + PAGE_SIZE);
priv->ict_index = 0;
+ /* add periodic RX interrupt */
+ priv->inta_mask |= CSR_INT_BIT_RX_PERIODIC;
return 0;
}
EXPORT_SYMBOL(iwl_alloc_isr_ict);
@@ -1586,7 +1588,7 @@ int iwl_reset_ict(struct iwl_priv *priv)
iwl_write32(priv, CSR_DRAM_INT_TBL_REG, val);
priv->use_ict = true;
priv->ict_index = 0;
- iwl_write32(priv, CSR_INT, CSR_INI_SET_MASK);
+ iwl_write32(priv, CSR_INT, priv->inta_mask);
iwl_enable_interrupts(priv);
spin_unlock_irqrestore(&priv->lock, flags);
@@ -1668,7 +1670,7 @@ irqreturn_t iwl_isr_ict(int irq, void *data)
IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x ict 0x%08x\n",
inta, inta_mask, val);
- inta &= CSR_INI_SET_MASK;
+ inta &= priv->inta_mask;
priv->inta |= inta;
/* iwl_irq_tasklet() will service interrupts and re-enable them */
diff --git a/drivers/net/wireless/iwlwifi/iwl-csr.h b/drivers/net/wireless/iwlwifi/iwl-csr.h
index 34c123ea1d3..e2fafb82868 100644
--- a/drivers/net/wireless/iwlwifi/iwl-csr.h
+++ b/drivers/net/wireless/iwlwifi/iwl-csr.h
@@ -100,6 +100,7 @@
#define CSR_DRAM_INT_TBL_REG (CSR_BASE+0x0A0)
#define CSR_GIO_CHICKEN_BITS (CSR_BASE+0x100)
+#define CSR_INT_PERIODIC_REG (CSR_BASE+0x005)
/* Analog phase-lock-loop configuration */
#define CSR_ANA_PLL_CFG (CSR_BASE+0x20c)
/*
@@ -129,12 +130,14 @@
#define CSR_HW_IF_CONFIG_REG_BIT_ME_OWN (0x02000000)
#define CSR_HW_IF_CONFIG_REG_BIT_WAKE_ME (0x08000000)
+#define CSR_INT_PERIODIC_DIS (0x00)
+#define CSR_INT_PERIODIC_ENA (0xFF)
/* interrupt flags in INTA, set by uCode or hardware (e.g. dma),
* acknowledged (reset) by host writing "1" to flagged bits. */
#define CSR_INT_BIT_FH_RX (1 << 31) /* Rx DMA, cmd responses, FH_INT[17:16] */
#define CSR_INT_BIT_HW_ERR (1 << 29) /* DMA hardware error FH_INT[31] */
-#define CSR_INT_BIT_DNLD (1 << 28) /* uCode Download */
+#define CSR_INT_BIT_RX_PERIODIC (1 << 28) /* Rx periodic */
#define CSR_INT_BIT_FH_TX (1 << 27) /* Tx DMA FH_INT[1:0] */
#define CSR_INT_BIT_SCD (1 << 26) /* TXQ pointer advanced */
#define CSR_INT_BIT_SW_ERR (1 << 25) /* uCode error */
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 770cd1b062f..f9a3fd6a023 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -1058,6 +1058,7 @@ struct iwl_priv {
u32 inta;
bool use_ict;
+ u32 inta_mask;
/* Current association information needed to configure the
* hardware */
u16 assoc_id;
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index 639893d7808..c434f493daf 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -1944,9 +1944,9 @@ static void iwl3945_irq_tasklet(struct iwl_priv *priv)
priv->isr_stats.unhandled++;
}
- if (inta & ~CSR_INI_SET_MASK) {
+ if (inta & ~priv->inta_mask) {
IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
- inta & ~CSR_INI_SET_MASK);
+ inta & ~priv->inta_mask);
IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
}
@@ -4184,6 +4184,7 @@ static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
priv->cfg = cfg;
priv->pci_dev = pdev;
+ priv->inta_mask = CSR_INI_SET_MASK;
#ifdef CONFIG_IWLWIFI_DEBUG
priv->debug_level = iwl3945_mod_params.debug;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 09:21:00 +0000