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| author | Felix Kuehling <Felix.Kuehling@amd.com> | 2017-11-01 19:21:59 -0400 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2017-11-01 19:21:59 -0400 |
| commit | fd0f0762dc590736a6692707860af3ce793f5028 (patch) | |
| tree | 2d4ab1824148d4234dd8a355120fb3bca2ee8479 /drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c | |
| parent | 7ce66118aaca8c9ed23cd44d629b8037a4117c11 (diff) | |
| download | linux-fd0f0762dc590736a6692707860af3ce793f5028.tar.gz linux-fd0f0762dc590736a6692707860af3ce793f5028.tar.bz2 linux-fd0f0762dc590736a6692707860af3ce793f5028.zip | |
drm/amdgpu: Add support for resuming SDMA queues w/o HWS
Save wptr in hqd_sdma_destroy, restore it in hqd_sdma_load. Also
read updated wptr from user mode when resuming an SDMA queue.
Signed-off-by: Jay Cornwall <Jay.Cornwall@amd.com>
Signed-off-by: Yong Zhao <yong.zhao@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c index 1017ff51c957..c0c8cc3b23b0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gfx_v8.c @@ -514,7 +514,7 @@ static int kgd_hqd_sdma_destroy(struct kgd_dev *kgd, void *mqd, struct cik_sdma_rlc_registers *m; uint32_t sdma_base_addr; uint32_t temp; - int timeout = utimeout; + unsigned long end_jiffies = (utimeout * HZ / 1000) + jiffies; m = get_sdma_mqd(mqd); sdma_base_addr = get_sdma_base_addr(m); @@ -527,10 +527,9 @@ static int kgd_hqd_sdma_destroy(struct kgd_dev *kgd, void *mqd, temp = RREG32(sdma_base_addr + mmSDMA0_RLC0_CONTEXT_STATUS); if (temp & SDMA0_STATUS_REG__RB_CMD_IDLE__SHIFT) break; - if (timeout <= 0) + if (time_after(jiffies, end_jiffies)) return -ETIME; - msleep(20); - timeout -= 20; + usleep_range(500, 1000); } WREG32(sdma_base_addr + mmSDMA0_RLC0_DOORBELL, 0); |