Am 05.04.2017 um 08:43 schrieb Junwei Zhang:
> By default, the value is set by individual gmc.
> if a specific value is input, it overrides the global value for all
>
> Signed-off-by: Junwei Zhang <Jerry.Zhang at amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu.h | 2 ++
> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 44 ++++++++++++++++++------------
> drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 2 +-
> drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c | 10 +++++--
> drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 10 +++++--
> drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 10 +++++--
> drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 30 ++++++++++++++------
> 7 files changed, 74 insertions(+), 34 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> index 65021df..d7f75ce 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> @@ -1647,6 +1647,8 @@ void amdgpu_mm_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v,
> bool amdgpu_device_asic_has_dc_support(enum amd_asic_type asic_type);
> bool amdgpu_device_has_dc_support(struct amdgpu_device *adev);
>
> +uint32_t amdgpu_get_block_size(int vm_size);
> +
> /*
> * Registers read & write functions.
> */
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> index 1d0c742..2f91c2f 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -1039,35 +1039,44 @@ static bool amdgpu_check_pot_argument(int arg)
> return (arg & (arg - 1)) == 0;
> }
>
> -static void amdgpu_get_block_size(struct amdgpu_device *adev)
> +uint32_t amdgpu_get_block_size(int vm_size)
> +{
> + /* Total bits covered by PD + PTs */
> + unsigned bits = ilog2(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 (vm_size <= 8)
> + return (bits - 9);
> + else
> + return ((bits + 3) / 2);
> +}
Please move that helper into amdgpu_vmc.c.
> +
> +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)
> @@ -1096,8 +1105,7 @@ 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;;
> }
>
> /**
> @@ -1131,7 +1139,7 @@ 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))) {
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> index bfd945b..6238e2e 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> @@ -86,7 +86,7 @@
> unsigned amdgpu_ip_block_mask = 0xffffffff;
> int amdgpu_bapm = -1;
> int amdgpu_deep_color = 0;
> -int amdgpu_vm_size = 64;
> +int amdgpu_vm_size = -1;
> int amdgpu_vm_block_size = -1;
> int amdgpu_vm_fault_stop = 0;
> int amdgpu_vm_debug = 0;
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
> index 30d5c42..f46c52c 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
> @@ -849,8 +849,14 @@ static int gmc_v6_0_sw_init(void *handle)
> if (r)
> return r;
>
> - adev->vm_manager.vm_size = amdgpu_vm_size;
> - adev->vm_manager.block_size = amdgpu_vm_block_size;
> + if (amdgpu_vm_size == -1) {
> + adev->vm_manager.vm_size = 64;
> + adev->vm_manager.block_size =
> + amdgpu_get_block_size(adev->vm_manager.vm_size);
> + } else {
> + adev->vm_manager.vm_size = amdgpu_vm_size;
> + adev->vm_manager.block_size = amdgpu_vm_block_size;
> + }
> adev->vm_manager.max_pfn = adev->vm_manager.vm_size << 18;
>
> DRM_INFO("vm size is %d GB, block size is %d-bit\n",
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
> index 7113765..80b31f4 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
> @@ -1003,8 +1003,14 @@ static int gmc_v7_0_sw_init(void *handle)
> * Currently set to 4GB ((1 << 20) 4k pages).
> * Max GPUVM size for cayman and SI is 40 bits.
> */
> - adev->vm_manager.vm_size = amdgpu_vm_size;
> - adev->vm_manager.block_size = amdgpu_vm_block_size;
> + if (amdgpu_vm_size == -1) {
> + adev->vm_manager.vm_size = 64;
> + adev->vm_manager.block_size =
> + amdgpu_get_block_size(adev->vm_manager.vm_size);
> + } else {
> + adev->vm_manager.vm_size = amdgpu_vm_size;
> + adev->vm_manager.block_size = amdgpu_vm_block_size;
> + }
That's a bit to simple. The logic should probably rather be:
if (amdgpu_vm_size == -1)
adev->vm_manager.vm_size = 64;
else
adev->vm_manager.vm_size = amdgpu_vm_size;
if (amdgpu_vm_block_size == -1)
adev->vm_manager.block_size =
amdgpu_get_block_size(adev->vm_manager.vm_size);
else
adev->vm_manager.block_size = amdgpu_vm_block_size;
Since the logic is the same for GFX6,7 and 8 we might put that into a
helper as well.
> adev->vm_manager.max_pfn = adev->vm_manager.vm_size << 18;
>
> DRM_INFO("vm size is %d GB, block size is %d-bit\n",
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
> index b3d1f1b..f1f135a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
> @@ -1087,8 +1087,14 @@ static int gmc_v8_0_sw_init(void *handle)
> * Currently set to 4GB ((1 << 20) 4k pages).
> * Max GPUVM size for cayman and SI is 40 bits.
> */
> - adev->vm_manager.vm_size = amdgpu_vm_size;
> - adev->vm_manager.block_size = amdgpu_vm_block_size;
> + if (amdgpu_vm_size == -1) {
> + adev->vm_manager.vm_size = 64;
> + adev->vm_manager.block_size =
> + amdgpu_get_block_size(adev->vm_manager.vm_size);
> + } else {
> + adev->vm_manager.vm_size = amdgpu_vm_size;
> + adev->vm_manager.block_size = amdgpu_vm_block_size;
> + }
> adev->vm_manager.max_pfn = adev->vm_manager.vm_size << 18;
>
> DRM_INFO("vm size is %d GB, block size is %d-bit\n",
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> index 0cae7f0..8e12ff3 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> @@ -532,18 +532,9 @@ static int gmc_v9_0_sw_init(void *handle)
>
> if (adev->flags & AMD_IS_APU) {
> adev->mc.vram_type = AMDGPU_VRAM_TYPE_UNKNOWN;
> - adev->vm_manager.vm_size = amdgpu_vm_size;
> - adev->vm_manager.block_size = amdgpu_vm_block_size;
> } else {
> /* XXX Don't know how to get VRAM type yet. */
> adev->mc.vram_type = AMDGPU_VRAM_TYPE_HBM;
> - /*
> - * To fulfill 4-level page support,
> - * vm size is 256TB (48bit), maximum size of Vega10,
> - * block size 512 (9bit)
> - */
> - adev->vm_manager.vm_size = 1U << 18;
> - adev->vm_manager.block_size = 9;
> }
>
> DRM_INFO("vm size is %d GB, block size is %d-bit\n",
> @@ -558,6 +549,27 @@ static int gmc_v9_0_sw_init(void *handle)
> if (r)
> return r;
>
> + if (amdgpu_vm_size == -1) {
> + if (adev->flags & AMD_IS_APU) {
> + adev->vm_manager.vm_size = 64;
> + adev->vm_manager.block_size =
> + amdgpu_get_block_size(adev->vm_manager.vm_size);
> + } else {
> + /*
> + * To fulfill 4-level page support,
> + * vm size is 256TB (48bit), maximum size of Vega10,
> + * block size 512 (9bit)
> + */
> + adev->vm_manager.vm_size = 1U << 18;
> + adev->vm_manager.block_size = 9;
> + }
> + } else {
> + adev->vm_manager.vm_size = amdgpu_vm_size;
> + adev->vm_manager.block_size = amdgpu_vm_block_size;
> + }
> +
> + adev->vm_manager.vm_size = amdgpu_vm_size;
> + adev->vm_manager.block_size = amdgpu_vm_block_size;
NAK. On GFX9 vm_size and block_size should be hard coded to 256TB and 9.
Christian.
> adev->vm_manager.max_pfn = adev->vm_manager.vm_size << 18;
>
> /* Set the internal MC address mask
