diff options
| author | Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com> | 2023-08-17 08:14:10 +0300 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2023-12-21 19:40:28 +0300 |
| commit | a043fbab7af54c64017269dc96f43f441ed4bcaf (patch) | |
| tree | 42a9057b459288d0866ea0f0832ee4437ac13823 /drivers/gpu/drm/xe/xe_migrate.c | |
| parent | 7407f2e5c356a73ec4a6d7f379e91f205025165c (diff) | |
| download | linux-a043fbab7af54c64017269dc96f43f441ed4bcaf.tar.xz | |
drm/xe/pvc: Use fast copy engines as migrate engine on PVC
Some copy hardware engine instances are faster than others on PVC.
Use a virtual engine of these plus the reserved instance for the migrate
engine on PVC. The idea being if a fast instance is available it will be
used and the throughput of kernel copies, clears, and pagefault
servicing will be higher.
v2: Use OOB WA, use all copy engines if no WA is required
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu/drm/xe/xe_migrate.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_migrate.c | 36 |
1 files changed, 32 insertions, 4 deletions
diff --git a/drivers/gpu/drm/xe/xe_migrate.c b/drivers/gpu/drm/xe/xe_migrate.c index 6e0d4e2c497a..799ad0209279 100644 --- a/drivers/gpu/drm/xe/xe_migrate.c +++ b/drivers/gpu/drm/xe/xe_migrate.c @@ -12,6 +12,7 @@ #include <drm/ttm/ttm_tt.h> #include <drm/xe_drm.h> +#include "generated/xe_wa_oob.h" #include "regs/xe_gpu_commands.h" #include "tests/xe_test.h" #include "xe_bb.h" @@ -29,6 +30,7 @@ #include "xe_sync.h" #include "xe_trace.h" #include "xe_vm.h" +#include "xe_wa.h" /** * struct xe_migrate - migrate context. @@ -298,6 +300,32 @@ static int xe_migrate_prepare_vm(struct xe_tile *tile, struct xe_migrate *m, return 0; } +/* + * Due to workaround 16017236439, odd instance hardware copy engines are + * faster than even instance ones. + * This function returns the mask involving all fast copy engines and the + * reserved copy engine to be used as logical mask for migrate engine. + * Including the reserved copy engine is required to avoid deadlocks due to + * migrate jobs servicing the faults gets stuck behind the job that faulted. + */ +static u32 xe_migrate_usm_logical_mask(struct xe_gt *gt) +{ + u32 logical_mask = 0; + struct xe_hw_engine *hwe; + enum xe_hw_engine_id id; + + for_each_hw_engine(hwe, gt, id) { + if (hwe->class != XE_ENGINE_CLASS_COPY) + continue; + + if (!XE_WA(gt, 16017236439) || + xe_gt_is_usm_hwe(gt, hwe) || hwe->instance & 1) + logical_mask |= BIT(hwe->logical_instance); + } + + return logical_mask; +} + /** * xe_migrate_init() - Initialize a migrate context * @tile: Back-pointer to the tile we're initializing for. @@ -338,12 +366,12 @@ struct xe_migrate *xe_migrate_init(struct xe_tile *tile) XE_ENGINE_CLASS_COPY, primary_gt->usm.reserved_bcs_instance, false); - if (!hwe) + u32 logical_mask = xe_migrate_usm_logical_mask(primary_gt); + + if (!hwe || !logical_mask) return ERR_PTR(-EINVAL); - m->q = xe_exec_queue_create(xe, vm, - BIT(hwe->logical_instance), 1, - hwe, + m->q = xe_exec_queue_create(xe, vm, logical_mask, 1, hwe, EXEC_QUEUE_FLAG_KERNEL | EXEC_QUEUE_FLAG_PERMANENT); } else { |