diff options
| author | shaoyunl <Shaoyun.Liu@amd.com> | 2017-11-02 02:21:56 +0300 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2017-11-26 12:31:32 +0300 |
| commit | d12fb13f23199faa7e536acec1db49068e5a067d (patch) | |
| tree | 0429d7ee902374ab60be9ffb8538ea874b4af320 /drivers/gpu/drm/amd/amdkfd | |
| parent | cf21654b40968609779751b34e7923180968fe5b (diff) | |
| download | linux-d12fb13f23199faa7e536acec1db49068e5a067d.tar.xz | |
drm/amdkfd: Fix SDMA ring buffer size calculation
ffs function return the position of the first bit set on 1 based.
(bit zero returns 1).
Signed-off-by: shaoyun liu <shaoyun.liu@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c index 4859d263fa2a..4728fad3fd74 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c @@ -202,8 +202,8 @@ static int update_mqd_sdma(struct mqd_manager *mm, void *mqd, struct cik_sdma_rlc_registers *m; m = get_sdma_mqd(mqd); - m->sdma_rlc_rb_cntl = ffs(q->queue_size / sizeof(unsigned int)) << - SDMA0_RLC0_RB_CNTL__RB_SIZE__SHIFT | + m->sdma_rlc_rb_cntl = (ffs(q->queue_size / sizeof(unsigned int)) - 1) + << SDMA0_RLC0_RB_CNTL__RB_SIZE__SHIFT | q->vmid << SDMA0_RLC0_RB_CNTL__RB_VMID__SHIFT | 1 << SDMA0_RLC0_RB_CNTL__RPTR_WRITEBACK_ENABLE__SHIFT | 6 << SDMA0_RLC0_RB_CNTL__RPTR_WRITEBACK_TIMER__SHIFT; |