diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2021-10-26 14:45:34 -0700 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2021-12-17 21:39:28 +0530 |
| commit | 92452a72ebdf1225aa37690d3648f2af6d0b4fca (patch) | |
| tree | 44987787e463f20302dbe36253d17248683676eb /drivers/dma | |
| parent | 0f93f2047d56d6ab93ba1ffeb30d318d0c5f52d7 (diff) | |
| download | linux-92452a72ebdf1225aa37690d3648f2af6d0b4fca.tar.gz linux-92452a72ebdf1225aa37690d3648f2af6d0b4fca.tar.bz2 linux-92452a72ebdf1225aa37690d3648f2af6d0b4fca.zip | |
dmaengine: idxd: set defaults for wq configs
Add default values for wq size, max_xfer_size and max_batch_size. These
values should provide a general guidance for the wq configuration when
the user does not specify any specific values.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/163528473483.3926048.7950067926287180976.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/idxd/device.c | 13 | ||||
| -rw-r--r-- | drivers/dma/idxd/idxd.h | 4 | ||||
| -rw-r--r-- | drivers/dma/idxd/init.c | 4 |
3 files changed, 11 insertions, 10 deletions
diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c index 1dc5245107df..36e213a8108d 100644 --- a/drivers/dma/idxd/device.c +++ b/drivers/dma/idxd/device.c @@ -390,6 +390,8 @@ static void idxd_wq_disable_cleanup(struct idxd_wq *wq) clear_bit(WQ_FLAG_DEDICATED, &wq->flags); clear_bit(WQ_FLAG_BLOCK_ON_FAULT, &wq->flags); memset(wq->name, 0, WQ_NAME_SIZE); + wq->max_xfer_bytes = WQ_DEFAULT_MAX_XFER; + wq->max_batch_size = WQ_DEFAULT_MAX_BATCH; } static void idxd_wq_ref_release(struct percpu_ref *ref) @@ -839,15 +841,12 @@ static int idxd_wq_config_write(struct idxd_wq *wq) wq->wqcfg->bits[i] = ioread32(idxd->reg_base + wq_offset); } + if (wq->size == 0 && wq->type != IDXD_WQT_NONE) + wq->size = WQ_DEFAULT_QUEUE_DEPTH; + /* byte 0-3 */ wq->wqcfg->wq_size = wq->size; - if (wq->size == 0) { - idxd->cmd_status = IDXD_SCMD_WQ_NO_SIZE; - dev_warn(dev, "Incorrect work queue size: 0\n"); - return -EINVAL; - } - /* bytes 4-7 */ wq->wqcfg->wq_thresh = wq->threshold; @@ -993,8 +992,6 @@ static int idxd_wqs_setup(struct idxd_device *idxd) if (!wq->group) continue; - if (!wq->size) - continue; if (wq_shared(wq) && !device_swq_supported(idxd)) { idxd->cmd_status = IDXD_SCMD_WQ_NO_SWQ_SUPPORT; diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h index 51e79201636c..89e98d69115b 100644 --- a/drivers/dma/idxd/idxd.h +++ b/drivers/dma/idxd/idxd.h @@ -150,6 +150,10 @@ struct idxd_cdev { #define WQ_NAME_SIZE 1024 #define WQ_TYPE_SIZE 10 +#define WQ_DEFAULT_QUEUE_DEPTH 16 +#define WQ_DEFAULT_MAX_XFER SZ_2M +#define WQ_DEFAULT_MAX_BATCH 32 + enum idxd_op_type { IDXD_OP_BLOCK = 0, IDXD_OP_NONBLOCK = 1, diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c index 912839bf0be3..94ecd4bf0f0e 100644 --- a/drivers/dma/idxd/init.c +++ b/drivers/dma/idxd/init.c @@ -246,8 +246,8 @@ static int idxd_setup_wqs(struct idxd_device *idxd) init_waitqueue_head(&wq->err_queue); init_completion(&wq->wq_dead); init_completion(&wq->wq_resurrect); - wq->max_xfer_bytes = idxd->max_xfer_bytes; - wq->max_batch_size = idxd->max_batch_size; + wq->max_xfer_bytes = WQ_DEFAULT_MAX_XFER; + wq->max_batch_size = WQ_DEFAULT_MAX_BATCH; wq->wqcfg = kzalloc_node(idxd->wqcfg_size, GFP_KERNEL, dev_to_node(dev)); if (!wq->wqcfg) { put_device(conf_dev); |