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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:36 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:36 +0000 |
commit | 50ba0232fd5312410f1b65247e774244f89a628e (patch) | |
tree | fd8f2fc78e9e548af0ff9590276602ee6125be00 /drivers/gpu/drm/amd/amdgpu/amdgpu_seq64.c | |
parent | Releasing progress-linux version 6.7.12-1~progress7.99u1. (diff) | |
download | linux-50ba0232fd5312410f1b65247e774244f89a628e.tar.xz linux-50ba0232fd5312410f1b65247e774244f89a628e.zip |
Merging upstream version 6.8.9.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_seq64.c')
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_seq64.c | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_seq64.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_seq64.c new file mode 100644 index 0000000000..7a6a672754 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_seq64.c @@ -0,0 +1,247 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright 2023 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. + * + */ + +#include "amdgpu.h" +#include "amdgpu_seq64.h" + +#include <drm/drm_exec.h> + +/** + * DOC: amdgpu_seq64 + * + * amdgpu_seq64 allocates a 64bit memory on each request in sequence order. + * seq64 driver is required for user queue fence memory allocation, TLB + * counters and VM updates. It has maximum count of 32768 64 bit slots. + */ + +/** + * amdgpu_seq64_map - Map the seq64 memory to VM + * + * @adev: amdgpu_device pointer + * @vm: vm pointer + * @bo_va: bo_va pointer + * @seq64_addr: seq64 vaddr start address + * @size: seq64 pool size + * + * Map the seq64 memory to the given VM. + * + * Returns: + * 0 on success or a negative error code on failure + */ +int amdgpu_seq64_map(struct amdgpu_device *adev, struct amdgpu_vm *vm, + struct amdgpu_bo_va **bo_va, u64 seq64_addr, + uint32_t size) +{ + struct amdgpu_bo *bo; + struct drm_exec exec; + int r; + + bo = adev->seq64.sbo; + if (!bo) + return -EINVAL; + + drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0); + drm_exec_until_all_locked(&exec) { + r = amdgpu_vm_lock_pd(vm, &exec, 0); + if (likely(!r)) + r = drm_exec_lock_obj(&exec, &bo->tbo.base); + drm_exec_retry_on_contention(&exec); + if (unlikely(r)) + goto error; + } + + *bo_va = amdgpu_vm_bo_add(adev, vm, bo); + if (!*bo_va) { + r = -ENOMEM; + goto error; + } + + r = amdgpu_vm_bo_map(adev, *bo_va, seq64_addr, 0, size, + AMDGPU_PTE_READABLE | AMDGPU_PTE_WRITEABLE | + AMDGPU_PTE_EXECUTABLE); + if (r) { + DRM_ERROR("failed to do bo_map on userq sem, err=%d\n", r); + amdgpu_vm_bo_del(adev, *bo_va); + goto error; + } + + r = amdgpu_vm_bo_update(adev, *bo_va, false); + if (r) { + DRM_ERROR("failed to do vm_bo_update on userq sem\n"); + amdgpu_vm_bo_del(adev, *bo_va); + goto error; + } + +error: + drm_exec_fini(&exec); + return r; +} + +/** + * amdgpu_seq64_unmap - Unmap the seq64 memory + * + * @adev: amdgpu_device pointer + * @fpriv: DRM file private + * + * Unmap the seq64 memory from the given VM. + */ +void amdgpu_seq64_unmap(struct amdgpu_device *adev, struct amdgpu_fpriv *fpriv) +{ + struct amdgpu_vm *vm; + struct amdgpu_bo *bo; + struct drm_exec exec; + int r; + + if (!fpriv->seq64_va) + return; + + bo = adev->seq64.sbo; + if (!bo) + return; + + vm = &fpriv->vm; + + drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0); + drm_exec_until_all_locked(&exec) { + r = amdgpu_vm_lock_pd(vm, &exec, 0); + if (likely(!r)) + r = drm_exec_lock_obj(&exec, &bo->tbo.base); + drm_exec_retry_on_contention(&exec); + if (unlikely(r)) + goto error; + } + + amdgpu_vm_bo_del(adev, fpriv->seq64_va); + + fpriv->seq64_va = NULL; + +error: + drm_exec_fini(&exec); +} + +/** + * amdgpu_seq64_alloc - Allocate a 64 bit memory + * + * @adev: amdgpu_device pointer + * @gpu_addr: allocated gpu VA start address + * @cpu_addr: allocated cpu VA start address + * + * Alloc a 64 bit memory from seq64 pool. + * + * Returns: + * 0 on success or a negative error code on failure + */ +int amdgpu_seq64_alloc(struct amdgpu_device *adev, u64 *gpu_addr, + u64 **cpu_addr) +{ + unsigned long bit_pos; + u32 offset; + + bit_pos = find_first_zero_bit(adev->seq64.used, adev->seq64.num_sem); + + if (bit_pos < adev->seq64.num_sem) { + __set_bit(bit_pos, adev->seq64.used); + offset = bit_pos << 6; /* convert to qw offset */ + } else { + return -EINVAL; + } + + *gpu_addr = offset + AMDGPU_SEQ64_VADDR_START; + *cpu_addr = offset + adev->seq64.cpu_base_addr; + + return 0; +} + +/** + * amdgpu_seq64_free - Free the given 64 bit memory + * + * @adev: amdgpu_device pointer + * @gpu_addr: gpu start address to be freed + * + * Free the given 64 bit memory from seq64 pool. + * + */ +void amdgpu_seq64_free(struct amdgpu_device *adev, u64 gpu_addr) +{ + u32 offset; + + offset = gpu_addr - AMDGPU_SEQ64_VADDR_START; + + offset >>= 6; + if (offset < adev->seq64.num_sem) + __clear_bit(offset, adev->seq64.used); +} + +/** + * amdgpu_seq64_fini - Cleanup seq64 driver + * + * @adev: amdgpu_device pointer + * + * Free the memory space allocated for seq64. + * + */ +void amdgpu_seq64_fini(struct amdgpu_device *adev) +{ + amdgpu_bo_free_kernel(&adev->seq64.sbo, + NULL, + (void **)&adev->seq64.cpu_base_addr); +} + +/** + * amdgpu_seq64_init - Initialize seq64 driver + * + * @adev: amdgpu_device pointer + * + * Allocate the required memory space for seq64. + * + * Returns: + * 0 on success or a negative error code on failure + */ +int amdgpu_seq64_init(struct amdgpu_device *adev) +{ + int r; + + if (adev->seq64.sbo) + return 0; + + /* + * AMDGPU_MAX_SEQ64_SLOTS * sizeof(u64) * 8 = AMDGPU_MAX_SEQ64_SLOTS + * 64bit slots + */ + r = amdgpu_bo_create_kernel(adev, AMDGPU_SEQ64_SIZE, + PAGE_SIZE, AMDGPU_GEM_DOMAIN_GTT, + &adev->seq64.sbo, NULL, + (void **)&adev->seq64.cpu_base_addr); + if (r) { + dev_warn(adev->dev, "(%d) create seq64 failed\n", r); + return r; + } + + memset(adev->seq64.cpu_base_addr, 0, AMDGPU_SEQ64_SIZE); + + adev->seq64.num_sem = AMDGPU_MAX_SEQ64_SLOTS; + memset(&adev->seq64.used, 0, sizeof(adev->seq64.used)); + + return 0; +} |