From bab4fee703ae5bfccb9ba2d1d92294f9db0887c7 Mon Sep 17 00:00:00 2001 From: Junwei Zhang Date: Wed, 5 Apr 2017 13:54:56 +0800 Subject: drm/amdgpu: set vm size and block size by individual gmc by default (v3) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit By default, the value is set by individual gmc. if a specific value is input, it overrides the global value for all v2: create helper funcs v3: update gmc9 APU's num_level athough it may be updated in the future. Signed-off-by: Junwei Zhang Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 31 +++++++++++++----------------- 1 file changed, 13 insertions(+), 18 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 831c2bfd2072..483660742f75 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1040,35 +1040,31 @@ static bool amdgpu_check_pot_argument(int arg) return (arg & (arg - 1)) == 0; } -static void amdgpu_get_block_size(struct amdgpu_device *adev) +static void amdgpu_check_block_size(struct amdgpu_device *adev) { /* defines number of bits in page table versus page directory, * a page is 4KB so we have 12 bits offset, minimum 9 bits in the * page table and the remaining bits are in the page directory */ - if (amdgpu_vm_block_size == -1) { - - /* Total bits covered by PD + PTs */ - unsigned bits = ilog2(amdgpu_vm_size) + 18; - - /* Make sure the PD is 4K in size up to 8GB address space. - Above that split equal between PD and PTs */ - if (amdgpu_vm_size <= 8) - amdgpu_vm_block_size = bits - 9; - else - amdgpu_vm_block_size = (bits + 3) / 2; + if (amdgpu_vm_block_size == -1) + return; - } else if (amdgpu_vm_block_size < 9) { + if (amdgpu_vm_block_size < 9) { dev_warn(adev->dev, "VM page table size (%d) too small\n", amdgpu_vm_block_size); - amdgpu_vm_block_size = 9; + goto def_value; } if (amdgpu_vm_block_size > 24 || (amdgpu_vm_size * 1024) < (1ull << amdgpu_vm_block_size)) { dev_warn(adev->dev, "VM page table size (%d) too large\n", amdgpu_vm_block_size); - amdgpu_vm_block_size = 9; + goto def_value; } + + return; + +def_value: + amdgpu_vm_block_size = -1; } static void amdgpu_check_vm_size(struct amdgpu_device *adev) @@ -1097,8 +1093,7 @@ static void amdgpu_check_vm_size(struct amdgpu_device *adev) return; def_value: - amdgpu_vm_size = 8; - dev_info(adev->dev, "set default VM size %dGB\n", amdgpu_vm_size); + amdgpu_vm_size = -1; } /** @@ -1132,7 +1127,7 @@ static void amdgpu_check_arguments(struct amdgpu_device *adev) amdgpu_check_vm_size(adev); - amdgpu_get_block_size(adev); + amdgpu_check_block_size(adev); if (amdgpu_vram_page_split != -1 && (amdgpu_vram_page_split < 16 || !amdgpu_check_pot_argument(amdgpu_vram_page_split))) { -- cgit v1.2.3