diff options
| author | Felix Kuehling <Felix.Kuehling@amd.com> | 2017-11-06 22:52:28 +0300 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2017-11-06 22:52:28 +0300 |
| commit | 115c8c4104bab4c435e0eaf7ffd5aabaf2adbbd2 (patch) | |
| tree | cd7e4739c549107ae2972478ac25227e0b83c555 /drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c | |
| parent | 6d566930257df564d0aaacad0f02855d9c85aecd (diff) | |
| download | linux-115c8c4104bab4c435e0eaf7ffd5aabaf2adbbd2.tar.xz | |
drm/amdkfd: Use order_base_2 to get log2 of buffes sizes
Replace (ffs(size) - 1) with order_base_2(size) as a more straight
forward way to get log2 of buffer sizes.
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c | 6 |
1 files changed, 3 insertions, 3 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 efed6ef6dad8..7aa57abebbcd 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_cik.c @@ -183,7 +183,7 @@ static int update_mqd(struct mqd_manager *mm, void *mqd, * Calculating queue size which is log base 2 of actual queue size -1 * dwords and another -1 for ffs */ - m->cp_hqd_pq_control |= ffs(q->queue_size / 4) - 1 - 1; + m->cp_hqd_pq_control |= order_base_2(q->queue_size / 4) - 1; m->cp_hqd_pq_base_lo = lower_32_bits((uint64_t)q->queue_address >> 8); m->cp_hqd_pq_base_hi = upper_32_bits((uint64_t)q->queue_address >> 8); m->cp_hqd_pq_rptr_report_addr_lo = lower_32_bits((uint64_t)q->read_ptr); @@ -208,7 +208,7 @@ 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 / 4) - 1) + m->sdma_rlc_rb_cntl = order_base_2(q->queue_size / 4) << 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 | @@ -349,7 +349,7 @@ static int update_mqd_hiq(struct mqd_manager *mm, void *mqd, * Calculating queue size which is log base 2 of actual queue * size -1 dwords */ - m->cp_hqd_pq_control |= ffs(q->queue_size / 4) - 1 - 1; + m->cp_hqd_pq_control |= order_base_2(q->queue_size / 4) - 1; m->cp_hqd_pq_base_lo = lower_32_bits((uint64_t)q->queue_address >> 8); m->cp_hqd_pq_base_hi = upper_32_bits((uint64_t)q->queue_address >> 8); m->cp_hqd_pq_rptr_report_addr_lo = lower_32_bits((uint64_t)q->read_ptr); |