mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 07:22:33 +00:00
126 lines
4.3 KiB
Diff
126 lines
4.3 KiB
Diff
|
From 91a5340db0526b7263bc8da14b120ea3129b5f28 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Stanislaw Gruszka <sgruszka@redhat.com>
|
||
|
|
Date: Sat, 9 Feb 2019 12:08:31 +0100
|
||
|
|
Subject: [PATCH 21/28] rt2800: partially restore old mmio txstatus behaviour
|
||
|
|
|
||
|
|
Do not disable txstatus interrupt and add quota of processed tx statuses in
|
||
|
|
one tasklet. Quota is needed to allow to fed device with new frames during
|
||
|
|
processing of tx statuses.
|
||
|
|
|
||
|
|
Patch fixes about 15% performance degradation on some scenarios coused by
|
||
|
|
0b0d556e0ebb ("rt2800mmio: use txdone/txstatus routines from lib").
|
||
|
|
|
||
|
|
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
|
||
|
|
---
|
||
|
|
.../net/wireless/ralink/rt2x00/rt2800lib.c | 4 +--
|
||
|
|
.../net/wireless/ralink/rt2x00/rt2800lib.h | 2 +-
|
||
|
|
.../net/wireless/ralink/rt2x00/rt2800mmio.c | 30 +++++--------------
|
||
|
|
.../net/wireless/ralink/rt2x00/rt2800usb.c | 2 +-
|
||
|
|
4 files changed, 12 insertions(+), 26 deletions(-)
|
||
|
|
|
||
|
|
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
|
||
|
|
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
|
||
|
|
@@ -1100,7 +1100,7 @@ void rt2800_txdone_entry(struct queue_en
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(rt2800_txdone_entry);
|
||
|
|
|
||
|
|
-void rt2800_txdone(struct rt2x00_dev *rt2x00dev)
|
||
|
|
+void rt2800_txdone(struct rt2x00_dev *rt2x00dev, unsigned int quota)
|
||
|
|
{
|
||
|
|
struct data_queue *queue;
|
||
|
|
struct queue_entry *entry;
|
||
|
|
@@ -1108,7 +1108,7 @@ void rt2800_txdone(struct rt2x00_dev *rt
|
||
|
|
u8 qid;
|
||
|
|
bool match;
|
||
|
|
|
||
|
|
- while (kfifo_get(&rt2x00dev->txstatus_fifo, ®)) {
|
||
|
|
+ while (quota-- > 0 && kfifo_get(&rt2x00dev->txstatus_fifo, ®)) {
|
||
|
|
/*
|
||
|
|
* TX_STA_FIFO_PID_QUEUE is a 2-bit field, thus qid is
|
||
|
|
* guaranteed to be one of the TX QIDs .
|
||
|
|
--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
|
||
|
|
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.h
|
||
|
|
@@ -195,7 +195,7 @@ void rt2800_process_rxwi(struct queue_en
|
||
|
|
|
||
|
|
void rt2800_txdone_entry(struct queue_entry *entry, u32 status, __le32 *txwi,
|
||
|
|
bool match);
|
||
|
|
-void rt2800_txdone(struct rt2x00_dev *rt2x00dev);
|
||
|
|
+void rt2800_txdone(struct rt2x00_dev *rt2x00dev, unsigned int quota);
|
||
|
|
void rt2800_txdone_nostatus(struct rt2x00_dev *rt2x00dev);
|
||
|
|
bool rt2800_txstatus_timeout(struct rt2x00_dev *rt2x00dev);
|
||
|
|
|
||
|
|
--- a/drivers/net/wireless/ralink/rt2x00/rt2800mmio.c
|
||
|
|
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800mmio.c
|
||
|
|
@@ -255,20 +255,6 @@ void rt2800mmio_autowake_tasklet(unsigne
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(rt2800mmio_autowake_tasklet);
|
||
|
|
|
||
|
|
-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;
|
||
|
|
@@ -305,14 +291,11 @@ void rt2800mmio_txstatus_tasklet(unsigne
|
||
|
|
{
|
||
|
|
struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
|
||
|
|
|
||
|
|
- do {
|
||
|
|
- rt2800mmio_txdone(rt2x00dev);
|
||
|
|
+ rt2800_txdone(rt2x00dev, 16);
|
||
|
|
|
||
|
|
- } while (rt2800mmio_fetch_txstatus(rt2x00dev));
|
||
|
|
+ if (!kfifo_is_empty(&rt2x00dev->txstatus_fifo))
|
||
|
|
+ tasklet_schedule(&rt2x00dev->txstatus_tasklet);
|
||
|
|
|
||
|
|
- 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);
|
||
|
|
|
||
|
|
@@ -339,8 +322,10 @@ irqreturn_t rt2800mmio_interrupt(int irq
|
||
|
|
mask = ~reg;
|
||
|
|
|
||
|
|
if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TX_FIFO_STATUS)) {
|
||
|
|
+ rt2x00_set_field32(&mask, INT_MASK_CSR_TX_FIFO_STATUS, 1);
|
||
|
|
rt2800mmio_fetch_txstatus(rt2x00dev);
|
||
|
|
- tasklet_schedule(&rt2x00dev->txstatus_tasklet);
|
||
|
|
+ if (!kfifo_is_empty(&rt2x00dev->txstatus_fifo))
|
||
|
|
+ tasklet_schedule(&rt2x00dev->txstatus_tasklet);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (rt2x00_get_field32(reg, INT_SOURCE_CSR_PRE_TBTT))
|
||
|
|
@@ -500,7 +485,8 @@ void rt2800mmio_flush_queue(struct data_
|
||
|
|
*/
|
||
|
|
if (tx_queue) {
|
||
|
|
tasklet_disable(&rt2x00dev->txstatus_tasklet);
|
||
|
|
- rt2800mmio_txdone(rt2x00dev);
|
||
|
|
+ rt2800_txdone(rt2x00dev, UINT_MAX);
|
||
|
|
+ rt2800_txdone_nostatus(rt2x00dev);
|
||
|
|
tasklet_enable(&rt2x00dev->txstatus_tasklet);
|
||
|
|
}
|
||
|
|
|
||
|
|
--- a/drivers/net/wireless/ralink/rt2x00/rt2800usb.c
|
||
|
|
+++ b/drivers/net/wireless/ralink/rt2x00/rt2800usb.c
|
||
|
|
@@ -480,7 +480,7 @@ static void rt2800usb_work_txdone(struct
|
||
|
|
while (!kfifo_is_empty(&rt2x00dev->txstatus_fifo) ||
|
||
|
|
rt2800_txstatus_timeout(rt2x00dev)) {
|
||
|
|
|
||
|
|
- rt2800_txdone(rt2x00dev);
|
||
|
|
+ rt2800_txdone(rt2x00dev, UINT_MAX);
|
||
|
|
|
||
|
|
rt2800_txdone_nostatus(rt2x00dev);
|
||
|
|
|