diff options
Diffstat (limited to 'package/kernel/mac80211/patches/rt2x00/006-rt2800-flush-and-txstatus-rework-for-rt2800mmio.patch')
-rw-r--r-- | package/kernel/mac80211/patches/rt2x00/006-rt2800-flush-and-txstatus-rework-for-rt2800mmio.patch | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/package/kernel/mac80211/patches/rt2x00/006-rt2800-flush-and-txstatus-rework-for-rt2800mmio.patch b/package/kernel/mac80211/patches/rt2x00/006-rt2800-flush-and-txstatus-rework-for-rt2800mmio.patch deleted file mode 100644 index 784fbb16f1..0000000000 --- a/package/kernel/mac80211/patches/rt2x00/006-rt2800-flush-and-txstatus-rework-for-rt2800mmio.patch +++ /dev/null @@ -1,238 +0,0 @@ -From 0240564430c0697d8fde3743d70346a922466b36 Mon Sep 17 00:00:00 2001 -From: Stanislaw Gruszka <sgruszka@redhat.com> -Date: Wed, 26 Sep 2018 12:24:57 +0200 -Subject: [PATCH 06/28] rt2800: flush and txstatus rework for rt2800mmio - -Implement custom rt2800mmio flush routine and change txstatus -routine to read TX_STA_FIFO also in the tasklet. - -Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> -Signed-off-by: Kalle Valo <kvalo@codeaurora.org> ---- - .../net/wireless/ralink/rt2x00/rt2800lib.c | 14 +-- - .../net/wireless/ralink/rt2x00/rt2800mmio.c | 118 +++++++++++++----- - .../net/wireless/ralink/rt2x00/rt2800mmio.h | 1 + - .../net/wireless/ralink/rt2x00/rt2800pci.c | 2 +- - 4 files changed, 97 insertions(+), 38 deletions(-) - ---- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c -+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c -@@ -1147,7 +1147,7 @@ static inline bool rt2800_entry_txstatus - return false; - - if (test_bit(DEVICE_STATE_FLUSHING, &rt2x00dev->flags)) -- tout = msecs_to_jiffies(100); -+ tout = msecs_to_jiffies(50); - else - tout = msecs_to_jiffies(2000); - -@@ -1163,15 +1163,13 @@ bool rt2800_txstatus_timeout(struct rt2x - { - struct data_queue *queue; - struct queue_entry *entry; -- unsigned long tout; - -- if (test_bit(DEVICE_STATE_FLUSHING, &rt2x00dev->flags)) -- tout = msecs_to_jiffies(50); -- else -- tout = msecs_to_jiffies(1000); -+ if (!test_bit(DEVICE_STATE_FLUSHING, &rt2x00dev->flags)) { -+ unsigned long tout = msecs_to_jiffies(1000); - -- if (time_before(jiffies, rt2x00dev->last_nostatus_check + tout)) -- return false; -+ if (time_before(jiffies, rt2x00dev->last_nostatus_check + tout)) -+ return false; -+ } - - rt2x00dev->last_nostatus_check = jiffies; - ---- a/drivers/net/wireless/ralink/rt2x00/rt2800mmio.c -+++ b/drivers/net/wireless/ralink/rt2x00/rt2800mmio.c -@@ -191,21 +191,6 @@ static inline void rt2800mmio_enable_int - spin_unlock_irq(&rt2x00dev->irqmask_lock); - } - --void rt2800mmio_txstatus_tasklet(unsigned long data) --{ -- struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data; -- -- rt2800_txdone(rt2x00dev); -- -- if (rt2800_txstatus_timeout(rt2x00dev)) -- rt2800_txdone_nostatus(rt2x00dev); -- -- if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) -- rt2800mmio_enable_interrupt(rt2x00dev, -- INT_SOURCE_CSR_TX_FIFO_STATUS); --} --EXPORT_SYMBOL_GPL(rt2800mmio_txstatus_tasklet); -- - void rt2800mmio_pretbtt_tasklet(unsigned long data) - { - struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data; -@@ -270,12 +255,26 @@ void rt2800mmio_autowake_tasklet(unsigne - } - EXPORT_SYMBOL_GPL(rt2800mmio_autowake_tasklet); - --static void rt2800mmio_txstatus_interrupt(struct rt2x00_dev *rt2x00dev) -+static void rt2800mmio_txdone(struct rt2x00_dev *rt2x00dev) -+{ -+ bool timeout = false; -+ -+ while (!kfifo_is_empty(&rt2x00dev->txstatus_fifo) || -+ (timeout = rt2800_txstatus_timeout(rt2x00dev))) { -+ -+ rt2800_txdone(rt2x00dev); -+ -+ if (timeout) -+ rt2800_txdone_nostatus(rt2x00dev); -+ } -+} -+ -+static bool rt2800mmio_fetch_txstatus(struct rt2x00_dev *rt2x00dev) - { - u32 status; -- int i; -+ bool more = false; - -- /* -+ /* FIXEME: rewrite this comment - * 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. -@@ -286,25 +285,37 @@ static void rt2800mmio_txstatus_interrup - * because we can schedule the tasklet multiple times (when the - * interrupt fires again during tx status processing). - * -- * Since we have only one producer and one consumer we don't -+ * txstatus tasklet is called with INT_SOURCE_CSR_TX_FIFO_STATUS -+ * disabled so have only one producer and one consumer - we don't - * need to lock the kfifo. - */ -- for (i = 0; i < rt2x00dev->tx->limit; i++) { -+ while (!kfifo_is_full(&rt2x00dev->txstatus_fifo)) { - status = rt2x00mmio_register_read(rt2x00dev, TX_STA_FIFO); -- - if (!rt2x00_get_field32(status, TX_STA_FIFO_VALID)) - break; - -- if (!kfifo_put(&rt2x00dev->txstatus_fifo, status)) { -- rt2x00_warn(rt2x00dev, "TX status FIFO overrun, drop tx status report\n"); -- break; -- } -+ kfifo_put(&rt2x00dev->txstatus_fifo, status); -+ more = true; - } - -- /* Schedule the tasklet for processing the tx status. */ -- tasklet_schedule(&rt2x00dev->txstatus_tasklet); -+ return more; - } - -+void rt2800mmio_txstatus_tasklet(unsigned long data) -+{ -+ struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data; -+ -+ do { -+ rt2800mmio_txdone(rt2x00dev); -+ -+ } while (rt2800mmio_fetch_txstatus(rt2x00dev)); -+ -+ if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) -+ rt2800mmio_enable_interrupt(rt2x00dev, -+ INT_SOURCE_CSR_TX_FIFO_STATUS); -+} -+EXPORT_SYMBOL_GPL(rt2800mmio_txstatus_tasklet); -+ - irqreturn_t rt2800mmio_interrupt(int irq, void *dev_instance) - { - struct rt2x00_dev *rt2x00dev = dev_instance; -@@ -327,8 +338,10 @@ irqreturn_t rt2800mmio_interrupt(int irq - */ - mask = ~reg; - -- if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TX_FIFO_STATUS)) -- rt2800mmio_txstatus_interrupt(rt2x00dev); -+ if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TX_FIFO_STATUS)) { -+ rt2800mmio_fetch_txstatus(rt2x00dev); -+ tasklet_schedule(&rt2x00dev->txstatus_tasklet); -+ } - - if (rt2x00_get_field32(reg, INT_SOURCE_CSR_PRE_TBTT)) - tasklet_hi_schedule(&rt2x00dev->pretbtt_tasklet); -@@ -453,6 +466,53 @@ void rt2800mmio_kick_queue(struct data_q - } - EXPORT_SYMBOL_GPL(rt2800mmio_kick_queue); - -+void rt2800mmio_flush_queue(struct data_queue *queue, bool drop) -+{ -+ struct rt2x00_dev *rt2x00dev = queue->rt2x00dev; -+ bool tx_queue = false; -+ unsigned int i; -+ -+ switch (queue->qid) { -+ case QID_AC_VO: -+ case QID_AC_VI: -+ case QID_AC_BE: -+ case QID_AC_BK: -+ tx_queue = true; -+ break; -+ case QID_RX: -+ break; -+ default: -+ return; -+ } -+ -+ for (i = 0; i < 5; i++) { -+ /* -+ * Check if the driver is already done, otherwise we -+ * have to sleep a little while to give the driver/hw -+ * the oppurtunity to complete interrupt process itself. -+ */ -+ if (rt2x00queue_empty(queue)) -+ break; -+ -+ /* -+ * For TX queues schedule completion tasklet to catch -+ * tx status timeouts, othewise just wait. -+ */ -+ if (tx_queue) { -+ tasklet_disable(&rt2x00dev->txstatus_tasklet); -+ rt2800mmio_txdone(rt2x00dev); -+ tasklet_enable(&rt2x00dev->txstatus_tasklet); -+ } -+ -+ /* -+ * Wait for a little while to give the driver -+ * the oppurtunity to recover itself. -+ */ -+ msleep(50); -+ } -+} -+EXPORT_SYMBOL_GPL(rt2800mmio_flush_queue); -+ - void rt2800mmio_stop_queue(struct data_queue *queue) - { - struct rt2x00_dev *rt2x00dev = queue->rt2x00dev; ---- a/drivers/net/wireless/ralink/rt2x00/rt2800mmio.h -+++ b/drivers/net/wireless/ralink/rt2x00/rt2800mmio.h -@@ -148,6 +148,7 @@ void rt2800mmio_toggle_irq(struct rt2x00 - /* Queue handlers */ - void rt2800mmio_start_queue(struct data_queue *queue); - void rt2800mmio_kick_queue(struct data_queue *queue); -+void rt2800mmio_flush_queue(struct data_queue *queue, bool drop); - void rt2800mmio_stop_queue(struct data_queue *queue); - void rt2800mmio_queue_init(struct data_queue *queue); - ---- a/drivers/net/wireless/ralink/rt2x00/rt2800pci.c -+++ b/drivers/net/wireless/ralink/rt2x00/rt2800pci.c -@@ -364,7 +364,7 @@ static const struct rt2x00lib_ops rt2800 - .start_queue = rt2800mmio_start_queue, - .kick_queue = rt2800mmio_kick_queue, - .stop_queue = rt2800mmio_stop_queue, -- .flush_queue = rt2x00mmio_flush_queue, -+ .flush_queue = rt2800mmio_flush_queue, - .write_tx_desc = rt2800mmio_write_tx_desc, - .write_tx_data = rt2800_write_tx_data, - .write_beacon = rt2800_write_beacon, |