diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h new file mode 100644 index 000000000000..500113ec65ca --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.h @@ -0,0 +1,97 @@ +/* + * Copyright 2018 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#ifndef __AMDGPU_SDMA_H__ +#define __AMDGPU_SDMA_H__ + +/* max number of IP instances */ +#define AMDGPU_MAX_SDMA_INSTANCES 2 + +enum amdgpu_sdma_irq { + AMDGPU_SDMA_IRQ_TRAP0 = 0, + AMDGPU_SDMA_IRQ_TRAP1, + + AMDGPU_SDMA_IRQ_LAST +}; + +struct amdgpu_sdma_instance { + /* SDMA firmware */ + const struct firmware *fw; + uint32_t fw_version; + uint32_t feature_version; + + struct amdgpu_ring ring; + bool burst_nop; +}; + +struct amdgpu_sdma { + struct amdgpu_sdma_instance instance[AMDGPU_MAX_SDMA_INSTANCES]; + struct amdgpu_irq_src trap_irq; + struct amdgpu_irq_src illegal_inst_irq; + int num_instances; + uint32_t srbm_soft_reset; +}; + +/* + * Provided by hw blocks that can move/clear data. e.g., gfx or sdma + * But currently, we use sdma to move data. + */ +struct amdgpu_buffer_funcs { + /* maximum bytes in a single operation */ + uint32_t copy_max_bytes; + + /* number of dw to reserve per operation */ + unsigned copy_num_dw; + + /* used for buffer migration */ + void (*emit_copy_buffer)(struct amdgpu_ib *ib, + /* src addr in bytes */ + uint64_t src_offset, + /* dst addr in bytes */ + uint64_t dst_offset, + /* number of byte to transfer */ + uint32_t byte_count); + + /* maximum bytes in a single operation */ + uint32_t fill_max_bytes; + + /* number of dw to reserve per operation */ + unsigned fill_num_dw; + + /* used for buffer clearing */ + void (*emit_fill_buffer)(struct amdgpu_ib *ib, + /* value to write to memory */ + uint32_t src_data, + /* dst addr in bytes */ + uint64_t dst_offset, + /* number of byte to fill */ + uint32_t byte_count); +}; + +#define amdgpu_emit_copy_buffer(adev, ib, s, d, b) (adev)->mman.buffer_funcs->emit_copy_buffer((ib), (s), (d), (b)) +#define amdgpu_emit_fill_buffer(adev, ib, s, d, b) (adev)->mman.buffer_funcs->emit_fill_buffer((ib), (s), (d), (b)) + +struct amdgpu_sdma_instance * +amdgpu_get_sdma_instance(struct amdgpu_ring *ring); + +#endif |