From c5892230d98b043b3948aec7ce60e636d19c8e50 Mon Sep 17 00:00:00 2001 From: Shaoyun Liu Date: Fri, 23 Mar 2018 16:20:41 -0500 Subject: [PATCH] drm/amdgpu: Doorbell assignment for 8 sdma user queue per engine Change doorbell assignments to allow routing doorbells for 8 user mode SDMA queues per engine. Signed-off-by: Shaoyun Liu Reviewed-by: Felix Kuehling Signed-off-by: Alex Deucher Signed-off-by: Felix Kuehling Acked-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 14 +++---- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 38 +++++++++++-------- .../gpu/drm/amd/include/kgd_kfd_interface.h | 6 +-- 3 files changed, 33 insertions(+), 25 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index c43bc83c2d29..01a23157f6f5 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -409,16 +409,16 @@ typedef enum _AMDGPU_DOORBELL64_ASSIGNMENT AMDGPU_DOORBELL64_GFX_RING0 = 0x8b, /* - * Other graphics doorbells can be allocated here: from 0x8c to 0xef + * Other graphics doorbells can be allocated here: from 0x8c to 0xdf * Graphics voltage island aperture 1 - * default non-graphics QWORD index is 0xF0 - 0xFF inclusive + * default non-graphics QWORD index is 0xe0 - 0xFF inclusive */ - /* sDMA engines */ - AMDGPU_DOORBELL64_sDMA_ENGINE0 = 0xF0, - AMDGPU_DOORBELL64_sDMA_HI_PRI_ENGINE0 = 0xF1, - AMDGPU_DOORBELL64_sDMA_ENGINE1 = 0xF2, - AMDGPU_DOORBELL64_sDMA_HI_PRI_ENGINE1 = 0xF3, + /* sDMA engines reserved from 0xe0 -oxef */ + AMDGPU_DOORBELL64_sDMA_ENGINE0 = 0xE0, + AMDGPU_DOORBELL64_sDMA_HI_PRI_ENGINE0 = 0xE1, + AMDGPU_DOORBELL64_sDMA_ENGINE1 = 0xE8, + AMDGPU_DOORBELL64_sDMA_HI_PRI_ENGINE1 = 0xE9, /* Interrupt handler */ AMDGPU_DOORBELL64_IH = 0xF4, /* For legacy interrupt ring buffer */ diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c index 0f9947edb12a..079e32b650d4 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c @@ -123,7 +123,7 @@ static void amdgpu_doorbell_get_kfd_info(struct amdgpu_device *adev, void amdgpu_amdkfd_device_init(struct amdgpu_device *adev) { - int i; + int i, n; int last_valid_bit; if (adev->kfd) { struct kgd2kfd_shared_resources gpu_resources = { @@ -162,7 +162,15 @@ void amdgpu_amdkfd_device_init(struct amdgpu_device *adev) &gpu_resources.doorbell_physical_address, &gpu_resources.doorbell_aperture_size, &gpu_resources.doorbell_start_offset); - if (adev->asic_type >= CHIP_VEGA10) { + + if (adev->asic_type < CHIP_VEGA10) { + kgd2kfd->device_init(adev->kfd, &gpu_resources); + return; + } + + n = (adev->asic_type < CHIP_VEGA20) ? 2 : 8; + + for (i = 0; i < n; i += 2) { /* On SOC15 the BIF is involved in routing * doorbells using the low 12 bits of the * address. Communicate the assignments to @@ -170,20 +178,20 @@ void amdgpu_amdkfd_device_init(struct amdgpu_device *adev) * process in case of 64-bit doorbells so we * can use each doorbell assignment twice. */ - gpu_resources.sdma_doorbell[0][0] = - AMDGPU_DOORBELL64_sDMA_ENGINE0; - gpu_resources.sdma_doorbell[0][1] = - AMDGPU_DOORBELL64_sDMA_ENGINE0 + 0x200; - gpu_resources.sdma_doorbell[1][0] = - AMDGPU_DOORBELL64_sDMA_ENGINE1; - gpu_resources.sdma_doorbell[1][1] = - AMDGPU_DOORBELL64_sDMA_ENGINE1 + 0x200; - /* Doorbells 0x0f0-0ff and 0x2f0-2ff are reserved for - * SDMA, IH and VCN. So don't use them for the CP. - */ - gpu_resources.reserved_doorbell_mask = 0x1f0; - gpu_resources.reserved_doorbell_val = 0x0f0; + gpu_resources.sdma_doorbell[0][i] = + AMDGPU_DOORBELL64_sDMA_ENGINE0 + (i >> 1); + gpu_resources.sdma_doorbell[0][i+1] = + AMDGPU_DOORBELL64_sDMA_ENGINE0 + 0x200 + (i >> 1); + gpu_resources.sdma_doorbell[1][i] = + AMDGPU_DOORBELL64_sDMA_ENGINE1 + (i >> 1); + gpu_resources.sdma_doorbell[1][i+1] = + AMDGPU_DOORBELL64_sDMA_ENGINE1 + 0x200 + (i >> 1); } + /* Doorbells 0x0e0-0ff and 0x2e0-2ff are reserved for + * SDMA, IH and VCN. So don't use them for the CP. + */ + gpu_resources.reserved_doorbell_mask = 0x1e0; + gpu_resources.reserved_doorbell_val = 0x0e0; kgd2kfd->device_init(adev->kfd, &gpu_resources); } diff --git a/drivers/gpu/drm/amd/include/kgd_kfd_interface.h b/drivers/gpu/drm/amd/include/kgd_kfd_interface.h index f43ed96cfa6c..bb1dbe3331ba 100644 --- a/drivers/gpu/drm/amd/include/kgd_kfd_interface.h +++ b/drivers/gpu/drm/amd/include/kgd_kfd_interface.h @@ -146,10 +146,10 @@ struct kgd2kfd_shared_resources { * is reserved: (D & reserved_doorbell_mask) == reserved_doorbell_val * * KFD currently uses 1024 (= 0x3ff) doorbells per process. If - * doorbells 0x0f0-0x0f7 and 0x2f-0x2f7 are reserved, that means - * mask would be set to 0x1f8 and val set to 0x0f0. + * doorbells 0x0e0-0x0ff and 0x2e0-0x2ff are reserved, that means + * mask would be set to 0x1e0 and val set to 0x0e0. */ - unsigned int sdma_doorbell[2][2]; + unsigned int sdma_doorbell[2][8]; unsigned int reserved_doorbell_mask; unsigned int reserved_doorbell_val; -- 2.30.2