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path: root/drivers/net/wireless/rt2x00/rt2800pci.c
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Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2800pci.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2800pci.c400
1 files changed, 173 insertions, 227 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index 39b3846fa34..b2673953598 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -1,5 +1,5 @@
/*
- Copyright (C) 2009 Ivo van Doorn <IvDoorn@gmail.com>
+ Copyright (C) 2009 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
Copyright (C) 2009 Alban Browaeys <prahal@yahoo.com>
Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
Copyright (C) 2009 Luis Correia <luis.f.correia@gmail.com>
@@ -196,8 +196,6 @@ static int rt2800pci_write_firmware(struct rt2x00_dev *rt2x00dev,
{
u32 reg;
- rt2800_register_write(rt2x00dev, AUTOWAKEUP_CFG, 0x00000000);
-
/*
* enable Host program ram write selection
*/
@@ -243,6 +241,7 @@ static void rt2800pci_clear_entry(struct queue_entry *entry)
{
struct queue_entry_priv_pci *entry_priv = entry->priv_data;
struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
+ struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
u32 word;
if (entry->queue->qid == QID_RX) {
@@ -253,6 +252,13 @@ static void rt2800pci_clear_entry(struct queue_entry *entry)
rt2x00_desc_read(entry_priv->desc, 1, &word);
rt2x00_set_field32(&word, RXD_W1_DMA_DONE, 0);
rt2x00_desc_write(entry_priv->desc, 1, word);
+
+ /*
+ * Set RX IDX in register to inform hardware that we have
+ * handled this entry and it is available for reuse again.
+ */
+ rt2800_register_write(rt2x00dev, RX_CRX_IDX,
+ entry->entry_idx);
} else {
rt2x00_desc_read(entry_priv->desc, 1, &word);
rt2x00_set_field32(&word, TXD_W1_DMA_DONE, 1);
@@ -344,24 +350,24 @@ static void rt2800pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
}
rt2800_register_read(rt2x00dev, INT_MASK_CSR, &reg);
- rt2x00_set_field32(&reg, INT_MASK_CSR_RXDELAYINT, mask);
- rt2x00_set_field32(&reg, INT_MASK_CSR_TXDELAYINT, mask);
+ rt2x00_set_field32(&reg, INT_MASK_CSR_RXDELAYINT, 0);
+ rt2x00_set_field32(&reg, INT_MASK_CSR_TXDELAYINT, 0);
rt2x00_set_field32(&reg, INT_MASK_CSR_RX_DONE, mask);
- rt2x00_set_field32(&reg, INT_MASK_CSR_AC0_DMA_DONE, mask);
- rt2x00_set_field32(&reg, INT_MASK_CSR_AC1_DMA_DONE, mask);
- rt2x00_set_field32(&reg, INT_MASK_CSR_AC2_DMA_DONE, mask);
- rt2x00_set_field32(&reg, INT_MASK_CSR_AC3_DMA_DONE, mask);
- rt2x00_set_field32(&reg, INT_MASK_CSR_HCCA_DMA_DONE, mask);
- rt2x00_set_field32(&reg, INT_MASK_CSR_MGMT_DMA_DONE, mask);
- rt2x00_set_field32(&reg, INT_MASK_CSR_MCU_COMMAND, mask);
- rt2x00_set_field32(&reg, INT_MASK_CSR_RXTX_COHERENT, mask);
+ rt2x00_set_field32(&reg, INT_MASK_CSR_AC0_DMA_DONE, 0);
+ rt2x00_set_field32(&reg, INT_MASK_CSR_AC1_DMA_DONE, 0);
+ rt2x00_set_field32(&reg, INT_MASK_CSR_AC2_DMA_DONE, 0);
+ rt2x00_set_field32(&reg, INT_MASK_CSR_AC3_DMA_DONE, 0);
+ rt2x00_set_field32(&reg, INT_MASK_CSR_HCCA_DMA_DONE, 0);
+ rt2x00_set_field32(&reg, INT_MASK_CSR_MGMT_DMA_DONE, 0);
+ rt2x00_set_field32(&reg, INT_MASK_CSR_MCU_COMMAND, 0);
+ rt2x00_set_field32(&reg, INT_MASK_CSR_RXTX_COHERENT, 0);
rt2x00_set_field32(&reg, INT_MASK_CSR_TBTT, mask);
rt2x00_set_field32(&reg, INT_MASK_CSR_PRE_TBTT, mask);
rt2x00_set_field32(&reg, INT_MASK_CSR_TX_FIFO_STATUS, mask);
rt2x00_set_field32(&reg, INT_MASK_CSR_AUTO_WAKEUP, mask);
- rt2x00_set_field32(&reg, INT_MASK_CSR_GPTIMER, mask);
- rt2x00_set_field32(&reg, INT_MASK_CSR_RX_COHERENT, mask);
- rt2x00_set_field32(&reg, INT_MASK_CSR_TX_COHERENT, mask);
+ rt2x00_set_field32(&reg, INT_MASK_CSR_GPTIMER, 0);
+ rt2x00_set_field32(&reg, INT_MASK_CSR_RX_COHERENT, 0);
+ rt2x00_set_field32(&reg, INT_MASK_CSR_TX_COHERENT, 0);
rt2800_register_write(rt2x00dev, INT_MASK_CSR, reg);
}
@@ -399,78 +405,18 @@ static int rt2800pci_init_registers(struct rt2x00_dev *rt2x00dev)
static int rt2800pci_enable_radio(struct rt2x00_dev *rt2x00dev)
{
- u32 reg;
- u16 word;
-
- /*
- * Initialize all registers.
- */
if (unlikely(rt2800_wait_wpdma_ready(rt2x00dev) ||
- rt2800pci_init_queues(rt2x00dev) ||
- rt2800_init_registers(rt2x00dev) ||
- rt2800_wait_wpdma_ready(rt2x00dev) ||
- rt2800_init_bbp(rt2x00dev) ||
- rt2800_init_rfcsr(rt2x00dev)))
+ rt2800pci_init_queues(rt2x00dev)))
return -EIO;
- /*
- * Send signal to firmware during boot time.
- */
- rt2800_mcu_request(rt2x00dev, MCU_BOOT_SIGNAL, 0, 0, 0);
-
- /*
- * Enable RX.
- */
- rt2800_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
- rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_TX, 1);
- rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_RX, 0);
- rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
-
- rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
- rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_TX_DMA, 1);
- rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_RX_DMA, 1);
- rt2x00_set_field32(&reg, WPDMA_GLO_CFG_WP_DMA_BURST_SIZE, 2);
- rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_WRITEBACK_DONE, 1);
- rt2800_register_write(rt2x00dev, WPDMA_GLO_CFG, reg);
-
- rt2800_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
- rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_TX, 1);
- rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_RX, 1);
- rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
-
- /*
- * Initialize LED control
- */
- rt2x00_eeprom_read(rt2x00dev, EEPROM_LED1, &word);
- rt2800_mcu_request(rt2x00dev, MCU_LED_1, 0xff,
- word & 0xff, (word >> 8) & 0xff);
-
- rt2x00_eeprom_read(rt2x00dev, EEPROM_LED2, &word);
- rt2800_mcu_request(rt2x00dev, MCU_LED_2, 0xff,
- word & 0xff, (word >> 8) & 0xff);
-
- rt2x00_eeprom_read(rt2x00dev, EEPROM_LED3, &word);
- rt2800_mcu_request(rt2x00dev, MCU_LED_3, 0xff,
- word & 0xff, (word >> 8) & 0xff);
-
- return 0;
+ return rt2800_enable_radio(rt2x00dev);
}
static void rt2800pci_disable_radio(struct rt2x00_dev *rt2x00dev)
{
u32 reg;
- rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
- rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_TX_DMA, 0);
- rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_DMA_BUSY, 0);
- rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_RX_DMA, 0);
- rt2x00_set_field32(&reg, WPDMA_GLO_CFG_RX_DMA_BUSY, 0);
- rt2x00_set_field32(&reg, WPDMA_GLO_CFG_TX_WRITEBACK_DONE, 1);
- rt2800_register_write(rt2x00dev, WPDMA_GLO_CFG, reg);
-
- rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, 0);
- rt2800_register_write(rt2x00dev, PWR_PIN_CFG, 0);
- rt2800_register_write(rt2x00dev, TX_PIN_CFG, 0);
+ rt2800_disable_radio(rt2x00dev);
rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00001280);
@@ -486,9 +432,6 @@ static void rt2800pci_disable_radio(struct rt2x00_dev *rt2x00dev)
rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e1f);
rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e00);
-
- /* Wait for DMA, ignore error */
- rt2800_wait_wpdma_ready(rt2x00dev);
}
static int rt2800pci_set_state(struct rt2x00_dev *rt2x00dev,
@@ -566,21 +509,16 @@ static int rt2800pci_set_device_state(struct rt2x00_dev *rt2x00dev,
/*
* TX descriptor initialization
*/
-static void rt2800pci_write_tx_data(struct queue_entry* entry,
- struct txentry_desc *txdesc)
+static __le32 *rt2800pci_get_txwi(struct queue_entry *entry)
{
- __le32 *txwi = (__le32 *) entry->skb->data;
-
- rt2800_write_txwi(txwi, txdesc);
+ return (__le32 *) entry->skb->data;
}
-
-static void rt2800pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
- struct sk_buff *skb,
+static void rt2800pci_write_tx_desc(struct queue_entry *entry,
struct txentry_desc *txdesc)
{
- struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
- struct queue_entry_priv_pci *entry_priv = skbdesc->entry->priv_data;
+ struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
+ struct queue_entry_priv_pci *entry_priv = entry->priv_data;
__le32 *txd = entry_priv->desc;
u32 word;
@@ -600,7 +538,7 @@ static void rt2800pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
rt2x00_desc_write(txd, 0, word);
rt2x00_desc_read(txd, 1, &word);
- rt2x00_set_field32(&word, TXD_W1_SD_LEN1, skb->len);
+ rt2x00_set_field32(&word, TXD_W1_SD_LEN1, entry->skb->len);
rt2x00_set_field32(&word, TXD_W1_LAST_SEC1,
!test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags));
rt2x00_set_field32(&word, TXD_W1_BURST,
@@ -631,41 +569,35 @@ static void rt2800pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
/*
* TX data initialization
*/
-static void rt2800pci_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
- const enum data_queue_qid queue_idx)
+static void rt2800pci_kick_tx_queue(struct data_queue *queue)
{
- struct data_queue *queue;
- unsigned int idx, qidx = 0;
+ struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
+ struct queue_entry *entry = rt2x00queue_get_entry(queue, Q_INDEX);
+ unsigned int qidx;
- if (queue_idx > QID_HCCA && queue_idx != QID_MGMT)
- return;
-
- queue = rt2x00queue_get_queue(rt2x00dev, queue_idx);
- idx = queue->index[Q_INDEX];
-
- if (queue_idx == QID_MGMT)
+ if (queue->qid == QID_MGMT)
qidx = 5;
else
- qidx = queue_idx;
+ qidx = queue->qid;
- rt2800_register_write(rt2x00dev, TX_CTX_IDX(qidx), idx);
+ rt2800_register_write(rt2x00dev, TX_CTX_IDX(qidx), entry->entry_idx);
}
-static void rt2800pci_kill_tx_queue(struct rt2x00_dev *rt2x00dev,
- const enum data_queue_qid qid)
+static void rt2800pci_kill_tx_queue(struct data_queue *queue)
{
+ struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
u32 reg;
- if (qid == QID_BEACON) {
+ if (queue->qid == QID_BEACON) {
rt2800_register_write(rt2x00dev, BCN_TIME_CFG, 0);
return;
}
rt2800_register_read(rt2x00dev, WPDMA_RST_IDX, &reg);
- rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX0, (qid == QID_AC_BE));
- rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX1, (qid == QID_AC_BK));
- rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX2, (qid == QID_AC_VI));
- rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX3, (qid == QID_AC_VO));
+ rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX0, (queue->qid == QID_AC_BE));
+ rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX1, (queue->qid == QID_AC_BK));
+ rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX2, (queue->qid == QID_AC_VI));
+ rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX3, (queue->qid == QID_AC_VO));
rt2800_register_write(rt2x00dev, WPDMA_RST_IDX, reg);
}
@@ -675,7 +607,6 @@ static void rt2800pci_kill_tx_queue(struct rt2x00_dev *rt2x00dev,
static void rt2800pci_fill_rxdone(struct queue_entry *entry,
struct rxdone_entry_desc *rxdesc)
{
- struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
struct queue_entry_priv_pci *entry_priv = entry->priv_data;
__le32 *rxd = entry_priv->desc;
u32 word;
@@ -717,127 +648,74 @@ static void rt2800pci_fill_rxdone(struct queue_entry *entry,
* Process the RXWI structure that is at the start of the buffer.
*/
rt2800_process_rxwi(entry, rxdesc);
-
- /*
- * Set RX IDX in register to inform hardware that we have handled
- * this entry and it is available for reuse again.
- */
- rt2800_register_write(rt2x00dev, RX_CRX_IDX, entry->entry_idx);
}
/*
* Interrupt functions.
*/
+static void rt2800pci_wakeup(struct rt2x00_dev *rt2x00dev)
+{
+ struct ieee80211_conf conf = { .flags = 0 };
+ struct rt2x00lib_conf libconf = { .conf = &conf };
+
+ rt2800_config(rt2x00dev, &libconf, IEEE80211_CONF_CHANGE_PS);
+}
+
static void rt2800pci_txdone(struct rt2x00_dev *rt2x00dev)
{
struct data_queue *queue;
struct queue_entry *entry;
- __le32 *txwi;
- struct txdone_entry_desc txdesc;
- u32 word;
- u32 reg;
- int wcid, ack, pid, tx_wcid, tx_ack, tx_pid;
- u16 mcs, real_mcs;
- int i;
-
- /*
- * TX_STA_FIFO is a stack of X entries, hence read TX_STA_FIFO
- * at most X times and also stop processing once the TX_STA_FIFO_VALID
- * flag is not set anymore.
- *
- * The legacy drivers use X=TX_RING_SIZE but state in a comment
- * that the TX_STA_FIFO stack has a size of 16. We stick to our
- * tx ring size for now.
- */
- for (i = 0; i < TX_ENTRIES; i++) {
- rt2800_register_read(rt2x00dev, TX_STA_FIFO, &reg);
- if (!rt2x00_get_field32(reg, TX_STA_FIFO_VALID))
+ u32 status;
+ u8 qid;
+
+ while (!kfifo_is_empty(&rt2x00dev->txstatus_fifo)) {
+ /* Now remove the tx status from the FIFO */
+ if (kfifo_out(&rt2x00dev->txstatus_fifo, &status,
+ sizeof(status)) != sizeof(status)) {
+ WARN_ON(1);
break;
+ }
- wcid = rt2x00_get_field32(reg, TX_STA_FIFO_WCID);
- ack = rt2x00_get_field32(reg, TX_STA_FIFO_TX_ACK_REQUIRED);
- pid = rt2x00_get_field32(reg, TX_STA_FIFO_PID_TYPE);
-
- /*
- * Skip this entry when it contains an invalid
- * queue identication number.
- */
- if (pid <= 0 || pid > QID_RX)
- continue;
-
- queue = rt2x00queue_get_queue(rt2x00dev, pid - 1);
- if (unlikely(!queue))
- continue;
-
- /*
- * Inside each queue, we process each entry in a chronological
- * order. We first check that the queue is not empty.
- */
- if (rt2x00queue_empty(queue))
- continue;
- entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
-
- /* Check if we got a match by looking at WCID/ACK/PID
- * fields */
- txwi = (__le32 *) entry->skb->data;
-
- rt2x00_desc_read(txwi, 1, &word);
- tx_wcid = rt2x00_get_field32(word, TXWI_W1_WIRELESS_CLI_ID);
- tx_ack = rt2x00_get_field32(word, TXWI_W1_ACK);
- tx_pid = rt2x00_get_field32(word, TXWI_W1_PACKETID);
-
- if ((wcid != tx_wcid) || (ack != tx_ack) || (pid != tx_pid))
- WARNING(rt2x00dev, "invalid TX_STA_FIFO content\n");
-
- /*
- * Obtain the status about this packet.
- */
- txdesc.flags = 0;
- rt2x00_desc_read(txwi, 0, &word);
- mcs = rt2x00_get_field32(word, TXWI_W0_MCS);
- real_mcs = rt2x00_get_field32(reg, TX_STA_FIFO_MCS);
-
- /*
- * Ralink has a retry mechanism using a global fallback
- * table. We setup this fallback table to try the immediate
- * lower rate for all rates. In the TX_STA_FIFO, the MCS field
- * always contains the MCS used for the last transmission, be
- * it successful or not.
- */
- if (rt2x00_get_field32(reg, TX_STA_FIFO_TX_SUCCESS)) {
+ qid = rt2x00_get_field32(status, TX_STA_FIFO_PID_QUEUE);
+ if (qid >= QID_RX) {
/*
- * Transmission succeeded. The number of retries is
- * mcs - real_mcs
+ * Unknown queue, this shouldn't happen. Just drop
+ * this tx status.
*/
- __set_bit(TXDONE_SUCCESS, &txdesc.flags);
- txdesc.retry = ((mcs > real_mcs) ? mcs - real_mcs : 0);
- } else {
+ WARNING(rt2x00dev, "Got TX status report with "
+ "unexpected pid %u, dropping", qid);
+ break;
+ }
+
+ queue = rt2x00queue_get_queue(rt2x00dev, qid);
+ if (unlikely(queue == NULL)) {
/*
- * Transmission failed. The number of retries is
- * always 7 in this case (for a total number of 8
- * frames sent).
+ * The queue is NULL, this shouldn't happen. Stop
+ * processing here and drop the tx status
*/
- __set_bit(TXDONE_FAILURE, &txdesc.flags);
- txdesc.retry = 7;
+ WARNING(rt2x00dev, "Got TX status for an unavailable "
+ "queue %u, dropping", qid);
+ break;
}
- /*
- * the frame was retried at least once
- * -> hw used fallback rates
- */
- if (txdesc.retry)
- __set_bit(TXDONE_FALLBACK, &txdesc.flags);
+ if (rt2x00queue_empty(queue)) {
+ /*
+ * The queue is empty. Stop processing here
+ * and drop the tx status.
+ */
+ WARNING(rt2x00dev, "Got TX status for an empty "
+ "queue %u, dropping", qid);
+ break;
+ }
- rt2x00lib_txdone(entry, &txdesc);
+ entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
+ rt2800_txdone_entry(entry, status);
}
}
-static void rt2800pci_wakeup(struct rt2x00_dev *rt2x00dev)
+static void rt2800pci_txstatus_tasklet(unsigned long data)
{
- struct ieee80211_conf conf = { .flags = 0 };
- struct rt2x00lib_conf libconf = { .conf = &conf };
-
- rt2800_config(rt2x00dev, &libconf, IEEE80211_CONF_CHANGE_PS);
+ rt2800pci_txdone((struct rt2x00_dev *)data);
}
static irqreturn_t rt2800pci_interrupt_thread(int irq, void *dev_instance)
@@ -864,13 +742,7 @@ static irqreturn_t rt2800pci_interrupt_thread(int irq, void *dev_instance)
rt2x00pci_rxdone(rt2x00dev);
/*
- * 4 - Tx done interrupt.
- */
- if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TX_FIFO_STATUS))
- rt2800pci_txdone(rt2x00dev);
-
- /*
- * 5 - Auto wakeup interrupt.
+ * 4 - Auto wakeup interrupt.
*/
if (rt2x00_get_field32(reg, INT_SOURCE_CSR_AUTO_WAKEUP))
rt2800pci_wakeup(rt2x00dev);
@@ -882,10 +754,58 @@ static irqreturn_t rt2800pci_interrupt_thread(int irq, void *dev_instance)
return IRQ_HANDLED;
}
+static void rt2800pci_txstatus_interrupt(struct rt2x00_dev *rt2x00dev)
+{
+ u32 status;
+ int i;
+
+ /*
+ * The TX_FIFO_STATUS interrupt needs special care. We should
+ * read TX_STA_FIFO but we should do it immediately as otherwise
+ * the register can overflow and we would lose status reports.
+ *
+ * Hence, read the TX_STA_FIFO register and copy all tx status
+ * reports into a kernel FIFO which is handled in the txstatus
+ * tasklet. We use a tasklet to process the tx status reports
+ * because we can schedule the tasklet multiple times (when the
+ * interrupt fires again during tx status processing).
+ *
+ * Furthermore we don't disable the TX_FIFO_STATUS
+ * interrupt here but leave it enabled so that the TX_STA_FIFO
+ * can also be read while the interrupt thread gets executed.
+ *
+ * Since we have only one producer and one consumer we don't
+ * need to lock the kfifo.
+ */
+ for (i = 0; i < TX_ENTRIES; i++) {
+ rt2800_register_read(rt2x00dev, TX_STA_FIFO, &status);
+
+ if (!rt2x00_get_field32(status, TX_STA_FIFO_VALID))
+ break;
+
+ if (kfifo_is_full(&rt2x00dev->txstatus_fifo)) {
+ WARNING(rt2x00dev, "TX status FIFO overrun,"
+ " drop tx status report.\n");
+ break;
+ }
+
+ if (kfifo_in(&rt2x00dev->txstatus_fifo, &status,
+ sizeof(status)) != sizeof(status)) {
+ WARNING(rt2x00dev, "TX status FIFO overrun,"
+ "drop tx status report.\n");
+ break;
+ }
+ }
+
+ /* Schedule the tasklet for processing the tx status. */
+ tasklet_schedule(&rt2x00dev->txstatus_tasklet);
+}
+
static irqreturn_t rt2800pci_interrupt(int irq, void *dev_instance)
{
struct rt2x00_dev *rt2x00dev = dev_instance;
u32 reg;
+ irqreturn_t ret = IRQ_HANDLED;
/* Read status and ACK all interrupts */
rt2800_register_read(rt2x00dev, INT_SOURCE_CSR, &reg);
@@ -897,15 +817,38 @@ static irqreturn_t rt2800pci_interrupt(int irq, void *dev_instance)
if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
return IRQ_HANDLED;
- /* Store irqvalue for use in the interrupt thread. */
- rt2x00dev->irqvalue[0] = reg;
+ if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TX_FIFO_STATUS))
+ rt2800pci_txstatus_interrupt(rt2x00dev);
- /* Disable interrupts, will be enabled again in the interrupt thread. */
- rt2x00dev->ops->lib->set_device_state(rt2x00dev,
- STATE_RADIO_IRQ_OFF_ISR);
+ if (rt2x00_get_field32(reg, INT_SOURCE_CSR_PRE_TBTT) ||
+ rt2x00_get_field32(reg, INT_SOURCE_CSR_TBTT) ||
+ rt2x00_get_field32(reg, INT_SOURCE_CSR_RX_DONE) ||
+ rt2x00_get_field32(reg, INT_SOURCE_CSR_AUTO_WAKEUP)) {
+ /*
+ * All other interrupts are handled in the interrupt thread.
+ * Store irqvalue for use in the interrupt thread.
+ */
+ rt2x00dev->irqvalue[0] = reg;
+
+ /*
+ * Disable interrupts, will be enabled again in the
+ * interrupt thread.
+ */
+ rt2x00dev->ops->lib->set_device_state(rt2x00dev,
+ STATE_RADIO_IRQ_OFF_ISR);
+
+ /*
+ * Leave the TX_FIFO_STATUS interrupt enabled to not lose any
+ * tx status reports.
+ */
+ rt2800_register_read(rt2x00dev, INT_MASK_CSR, &reg);
+ rt2x00_set_field32(&reg, INT_MASK_CSR_TX_FIFO_STATUS, 1);
+ rt2800_register_write(rt2x00dev, INT_MASK_CSR, reg);
+ ret = IRQ_WAKE_THREAD;
+ }
- return IRQ_WAKE_THREAD;
+ return ret;
}
/*
@@ -968,6 +911,7 @@ static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
__set_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags);
__set_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags);
__set_bit(DRIVER_REQUIRE_L2PAD, &rt2x00dev->flags);
+ __set_bit(DRIVER_REQUIRE_TXSTATUS_FIFO, &rt2x00dev->flags);
if (!modparam_nohwcrypt)
__set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
__set_bit(DRIVER_SUPPORT_LINK_TUNING, &rt2x00dev->flags);
@@ -1011,11 +955,13 @@ static const struct rt2800_ops rt2800pci_rt2800_ops = {
.regbusy_read = rt2x00pci_regbusy_read,
.drv_write_firmware = rt2800pci_write_firmware,
.drv_init_registers = rt2800pci_init_registers,
+ .drv_get_txwi = rt2800pci_get_txwi,
};
static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
.irq_handler = rt2800pci_interrupt,
.irq_handler_thread = rt2800pci_interrupt_thread,
+ .txstatus_tasklet = rt2800pci_txstatus_tasklet,
.probe_hw = rt2800pci_probe_hw,
.get_firmware_name = rt2800pci_get_firmware_name,
.check_firmware = rt2800_check_firmware,
@@ -1030,7 +976,7 @@ static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
.reset_tuner = rt2800_reset_tuner,
.link_tuner = rt2800_link_tuner,
.write_tx_desc = rt2800pci_write_tx_desc,
- .write_tx_data = rt2800pci_write_tx_data,
+ .write_tx_data = rt2800_write_tx_data,
.write_beacon = rt2800_write_beacon,
.kick_tx_queue = rt2800pci_kick_tx_queue,
.kill_tx_queue = rt2800pci_kill_tx_queue,