diff options
| author |  Dave Jiang <dave.jiang@intel.com>
| 2020-11-13 15:55:05 -0700 |
|---|---|---|
| committer |  Vinod Koul <vkoul@kernel.org>
| 2020-12-10 12:56:44 +0530 |
| commit | 92de5fa2dc39c3fba0704f7ac914e7f02eb732f2 (patch) | |
| tree | b867127de4232b0d82716fd3ba773f794d8abc7e /drivers/dma/idxd/device.c | |
| parent | dmaengine: ti: drop of_match_ptr and mark of_device_id table as maybe unused (diff) | |
| download | linux-92de5fa2dc39c3fba0704f7ac914e7f02eb732f2.tar.gz linux-92de5fa2dc39c3fba0704f7ac914e7f02eb732f2.tar.bz2 linux-92de5fa2dc39c3fba0704f7ac914e7f02eb732f2.zip | |
dmaengine: idxd: add ATS disable knob for work queues
With the DSA spec 1.1 update, a knob to disable ATS for individually is
introduced. Add enabling code to allow a system admin to make the
configuration through sysfs.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/160530810593.1288392.2561048329116529566.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/idxd/device.c')
| -rw-r--r-- | drivers/dma/idxd/device.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c index d6f551dcbcb6..b75f9a09666e 100644 --- a/drivers/dma/idxd/device.c +++ b/drivers/dma/idxd/device.c @@ -354,6 +354,7 @@ void idxd_wq_disable_cleanup(struct idxd_wq *wq) wq->group = NULL; wq->threshold = 0; wq->priority = 0; + wq->ats_dis = 0; clear_bit(WQ_FLAG_DEDICATED, &wq->flags); memset(wq->name, 0, WQ_NAME_SIZE); @@ -631,6 +632,9 @@ static int idxd_wq_config_write(struct idxd_wq *wq) test_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags)) wq->wqcfg->bof = 1; + if (idxd->hw.wq_cap.wq_ats_support) + wq->wqcfg->wq_ats_disable = wq->ats_dis; + /* bytes 12-15 */ wq->wqcfg->max_xfer_shift = ilog2(wq->max_xfer_bytes); wq->wqcfg->max_batch_shift = ilog2(wq->max_batch_size); |