diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2023-04-07 23:31:43 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-04-12 20:48:46 +0300 |
| commit | f2dc327131b5cbb2cbb467cec23836f2e9d4cf46 (patch) | |
| tree | 3061546a26b79310c4e4d2654d22763cfb6e1add /drivers/dma/idxd/device.c | |
| parent | a62b8f87c770fa4109ce515e4d8a0d4701a4ca5f (diff) | |
| download | linux-f2dc327131b5cbb2cbb467cec23836f2e9d4cf46.tar.xz | |
dmaengine: idxd: add per wq PRS disable
Add sysfs knob for per wq Page Request Service disable. This knob
disables PRS support for the specific wq. When this bit is set,
it also overrides the wq's block on fault enabling.
Tested-by: Tony Zhu <tony.zhu@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Co-developed-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: https://lore.kernel.org/r/20230407203143.2189681-17-fenghua.yu@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 | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c index fd97b2b58734..3c80b9681c72 100644 --- a/drivers/dma/idxd/device.c +++ b/drivers/dma/idxd/device.c @@ -967,12 +967,16 @@ static int idxd_wq_config_write(struct idxd_wq *wq) wq->wqcfg->priority = wq->priority; if (idxd->hw.gen_cap.block_on_fault && - test_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags)) + test_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags) && + !test_bit(WQ_FLAG_PRS_DISABLE, &wq->flags)) wq->wqcfg->bof = 1; if (idxd->hw.wq_cap.wq_ats_support) wq->wqcfg->wq_ats_disable = test_bit(WQ_FLAG_ATS_DISABLE, &wq->flags); + if (idxd->hw.wq_cap.wq_prs_support) + wq->wqcfg->wq_prs_disable = test_bit(WQ_FLAG_PRS_DISABLE, &wq->flags); + /* bytes 12-15 */ wq->wqcfg->max_xfer_shift = ilog2(wq->max_xfer_bytes); idxd_wqcfg_set_max_batch_shift(idxd->data->type, wq->wqcfg, ilog2(wq->max_batch_size)); |