diff options
| author | Stanislaw Gruszka <sgruszka@redhat.com> | 2019-06-15 12:00:55 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2019-06-25 07:10:08 +0200 |
| commit | 2034afe4db4a2a4f22541d7f7b426e38d2093d38 (patch) | |
| tree | 39c325848cb9e9d0ee35f09a7a16d18474e6a2e2 /drivers/net/wireless/ralink/rt2x00/rt2800mmio.c | |
| parent | rt2x00: allow to specify watchdog interval (diff) | |
| download | linux-2034afe4db4a2a4f22541d7f7b426e38d2093d38.tar.xz linux-2034afe4db4a2a4f22541d7f7b426e38d2093d38.zip | |
rt2800: add helpers for reading dma done index
For mmio we do not properlly trace dma done Q_INDEX_DMA_DONE index
for TX queues. That would require implementing INT_SOURCE_CSR_*_DMA_DONE
interrupts, what is rather not worth to do due to adding extra
CPU load (small but still somewhat not necessary otherwise).
We can just read TX DMA done indexes from registers directly. What
will be used by watchdog.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/ralink/rt2x00/rt2800mmio.c')
| -rw-r--r-- | drivers/net/wireless/ralink/rt2x00/rt2800mmio.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800mmio.c b/drivers/net/wireless/ralink/rt2x00/rt2800mmio.c index d1de8e2ff690..110bb391c372 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2800mmio.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2800mmio.c @@ -24,6 +24,37 @@ #include "rt2800lib.h" #include "rt2800mmio.h" +unsigned int rt2800mmio_get_dma_done(struct data_queue *queue) +{ + struct rt2x00_dev *rt2x00dev = queue->rt2x00dev; + struct queue_entry *entry; + int idx, qid; + + switch (queue->qid) { + case QID_AC_VO: + case QID_AC_VI: + case QID_AC_BE: + case QID_AC_BK: + qid = queue->qid; + idx = rt2x00mmio_register_read(rt2x00dev, TX_DTX_IDX(qid)); + break; + case QID_MGMT: + idx = rt2x00mmio_register_read(rt2x00dev, TX_DTX_IDX(5)); + break; + case QID_RX: + entry = rt2x00queue_get_entry(queue, Q_INDEX_DMA_DONE); + idx = entry->entry_idx; + break; + default: + WARN_ON_ONCE(1); + idx = 0; + break; + } + + return idx; +} +EXPORT_SYMBOL_GPL(rt2800mmio_get_dma_done); + /* * TX descriptor initialization */ |