| /* |
| * Copyright 2014 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. |
| * |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <pthread.h> |
| #include <sched.h> |
| #include <sys/ioctl.h> |
| #ifdef HAVE_ALLOCA_H |
| # include <alloca.h> |
| #endif |
| |
| #include "xf86drm.h" |
| #include "amdgpu_drm.h" |
| #include "amdgpu_internal.h" |
| |
| /** |
| * Create command submission context |
| * |
| * \param dev - \c [in] amdgpu device handle |
| * \param context - \c [out] amdgpu context handle |
| * |
| * \return 0 on success otherwise POSIX Error code |
| */ |
| int amdgpu_cs_ctx_create(amdgpu_device_handle dev, |
| amdgpu_context_handle *context) |
| { |
| struct amdgpu_context *gpu_context; |
| union drm_amdgpu_ctx args; |
| int r; |
| |
| if (NULL == dev) |
| return -EINVAL; |
| if (NULL == context) |
| return -EINVAL; |
| |
| gpu_context = calloc(1, sizeof(struct amdgpu_context)); |
| if (NULL == gpu_context) |
| return -ENOMEM; |
| |
| gpu_context->dev = dev; |
| |
| /* Create the context */ |
| memset(&args, 0, sizeof(args)); |
| args.in.op = AMDGPU_CTX_OP_ALLOC_CTX; |
| r = drmCommandWriteRead(dev->fd, DRM_AMDGPU_CTX, &args, sizeof(args)); |
| if (r) |
| goto error; |
| |
| gpu_context->id = args.out.alloc.ctx_id; |
| *context = (amdgpu_context_handle)gpu_context; |
| |
| return 0; |
| |
| error: |
| free(gpu_context); |
| return r; |
| } |
| |
| /** |
| * Release command submission context |
| * |
| * \param dev - \c [in] amdgpu device handle |
| * \param context - \c [in] amdgpu context handle |
| * |
| * \return 0 on success otherwise POSIX Error code |
| */ |
| int amdgpu_cs_ctx_free(amdgpu_context_handle context) |
| { |
| union drm_amdgpu_ctx args; |
| int r; |
| |
| if (NULL == context) |
| return -EINVAL; |
| |
| /* now deal with kernel side */ |
| memset(&args, 0, sizeof(args)); |
| args.in.op = AMDGPU_CTX_OP_FREE_CTX; |
| args.in.ctx_id = context->id; |
| r = drmCommandWriteRead(context->dev->fd, DRM_AMDGPU_CTX, |
| &args, sizeof(args)); |
| |
| free(context); |
| |
| return r; |
| } |
| |
| int amdgpu_cs_query_reset_state(amdgpu_context_handle context, |
| uint32_t *state, uint32_t *hangs) |
| { |
| union drm_amdgpu_ctx args; |
| int r; |
| |
| if (!context) |
| return -EINVAL; |
| |
| memset(&args, 0, sizeof(args)); |
| args.in.op = AMDGPU_CTX_OP_QUERY_STATE; |
| args.in.ctx_id = context->id; |
| r = drmCommandWriteRead(context->dev->fd, DRM_AMDGPU_CTX, |
| &args, sizeof(args)); |
| if (!r) { |
| *state = args.out.state.reset_status; |
| *hangs = args.out.state.hangs; |
| } |
| return r; |
| } |
| |
| /** |
| * Submit command to kernel DRM |
| * \param dev - \c [in] Device handle |
| * \param context - \c [in] GPU Context |
| * \param ibs_request - \c [in] Pointer to submission requests |
| * \param fence - \c [out] return fence for this submission |
| * |
| * \return 0 on success otherwise POSIX Error code |
| * \sa amdgpu_cs_submit() |
| */ |
| static int amdgpu_cs_submit_one(amdgpu_context_handle context, |
| struct amdgpu_cs_request *ibs_request) |
| { |
| union drm_amdgpu_cs cs; |
| uint64_t *chunk_array; |
| struct drm_amdgpu_cs_chunk *chunks; |
| struct drm_amdgpu_cs_chunk_data *chunk_data; |
| struct drm_amdgpu_cs_chunk_dep *dependencies = NULL; |
| uint32_t i, size; |
| bool user_fence; |
| int r = 0; |
| |
| if (ibs_request->ip_type >= AMDGPU_HW_IP_NUM) |
| return -EINVAL; |
| if (ibs_request->ring >= AMDGPU_CS_MAX_RINGS) |
| return -EINVAL; |
| if (ibs_request->number_of_ibs > AMDGPU_CS_MAX_IBS_PER_SUBMIT) |
| return -EINVAL; |
| user_fence = (ibs_request->fence_info.handle != NULL); |
| |
| size = ibs_request->number_of_ibs + (user_fence ? 2 : 1); |
| |
| chunk_array = alloca(sizeof(uint64_t) * size); |
| chunks = alloca(sizeof(struct drm_amdgpu_cs_chunk) * size); |
| |
| size = ibs_request->number_of_ibs + (user_fence ? 1 : 0); |
| |
| chunk_data = alloca(sizeof(struct drm_amdgpu_cs_chunk_data) * size); |
| |
| memset(&cs, 0, sizeof(cs)); |
| cs.in.chunks = (uint64_t)(uintptr_t)chunk_array; |
| cs.in.ctx_id = context->id; |
| if (ibs_request->resources) |
| cs.in.bo_list_handle = ibs_request->resources->handle; |
| cs.in.num_chunks = ibs_request->number_of_ibs; |
| /* IB chunks */ |
| for (i = 0; i < ibs_request->number_of_ibs; i++) { |
| struct amdgpu_cs_ib_info *ib; |
| chunk_array[i] = (uint64_t)(uintptr_t)&chunks[i]; |
| chunks[i].chunk_id = AMDGPU_CHUNK_ID_IB; |
| chunks[i].length_dw = sizeof(struct drm_amdgpu_cs_chunk_ib) / 4; |
| chunks[i].chunk_data = (uint64_t)(uintptr_t)&chunk_data[i]; |
| |
| ib = &ibs_request->ibs[i]; |
| |
| chunk_data[i].ib_data._pad = 0; |
| chunk_data[i].ib_data.va_start = ib->ib_mc_address; |
| chunk_data[i].ib_data.ib_bytes = ib->size * 4; |
| chunk_data[i].ib_data.ip_type = ibs_request->ip_type; |
| chunk_data[i].ib_data.ip_instance = ibs_request->ip_instance; |
| chunk_data[i].ib_data.ring = ibs_request->ring; |
| chunk_data[i].ib_data.flags = ib->flags; |
| } |
| |
| if (user_fence) { |
| i = cs.in.num_chunks++; |
| |
| /* fence chunk */ |
| chunk_array[i] = (uint64_t)(uintptr_t)&chunks[i]; |
| chunks[i].chunk_id = AMDGPU_CHUNK_ID_FENCE; |
| chunks[i].length_dw = sizeof(struct drm_amdgpu_cs_chunk_fence) / 4; |
| chunks[i].chunk_data = (uint64_t)(uintptr_t)&chunk_data[i]; |
| |
| /* fence bo handle */ |
| chunk_data[i].fence_data.handle = ibs_request->fence_info.handle->handle; |
| /* offset */ |
| chunk_data[i].fence_data.offset = |
| ibs_request->fence_info.offset * sizeof(uint64_t); |
| } |
| |
| if (ibs_request->number_of_dependencies) { |
| dependencies = malloc(sizeof(struct drm_amdgpu_cs_chunk_dep) * |
| ibs_request->number_of_dependencies); |
| if (!dependencies) { |
| r = -ENOMEM; |
| goto error_unlock; |
| } |
| |
| for (i = 0; i < ibs_request->number_of_dependencies; ++i) { |
| struct amdgpu_cs_fence *info = &ibs_request->dependencies[i]; |
| struct drm_amdgpu_cs_chunk_dep *dep = &dependencies[i]; |
| dep->ip_type = info->ip_type; |
| dep->ip_instance = info->ip_instance; |
| dep->ring = info->ring; |
| dep->ctx_id = info->context->id; |
| dep->handle = info->fence; |
| } |
| |
| i = cs.in.num_chunks++; |
| |
| /* dependencies chunk */ |
| chunk_array[i] = (uint64_t)(uintptr_t)&chunks[i]; |
| chunks[i].chunk_id = AMDGPU_CHUNK_ID_DEPENDENCIES; |
| chunks[i].length_dw = sizeof(struct drm_amdgpu_cs_chunk_dep) / 4 |
| * ibs_request->number_of_dependencies; |
| chunks[i].chunk_data = (uint64_t)(uintptr_t)dependencies; |
| } |
| |
| r = drmCommandWriteRead(context->dev->fd, DRM_AMDGPU_CS, |
| &cs, sizeof(cs)); |
| if (r) |
| goto error_unlock; |
| |
| ibs_request->seq_no = cs.out.handle; |
| |
| error_unlock: |
| free(dependencies); |
| return r; |
| } |
| |
| int amdgpu_cs_submit(amdgpu_context_handle context, |
| uint64_t flags, |
| struct amdgpu_cs_request *ibs_request, |
| uint32_t number_of_requests) |
| { |
| uint32_t i; |
| int r; |
| |
| if (NULL == context) |
| return -EINVAL; |
| if (NULL == ibs_request) |
| return -EINVAL; |
| |
| r = 0; |
| for (i = 0; i < number_of_requests; i++) { |
| r = amdgpu_cs_submit_one(context, ibs_request); |
| if (r) |
| break; |
| ibs_request++; |
| } |
| |
| return r; |
| } |
| |
| /** |
| * Calculate absolute timeout. |
| * |
| * \param timeout - \c [in] timeout in nanoseconds. |
| * |
| * \return absolute timeout in nanoseconds |
| */ |
| drm_private uint64_t amdgpu_cs_calculate_timeout(uint64_t timeout) |
| { |
| int r; |
| |
| if (timeout != AMDGPU_TIMEOUT_INFINITE) { |
| struct timespec current; |
| uint64_t current_ns; |
| r = clock_gettime(CLOCK_MONOTONIC, ¤t); |
| if (r) { |
| fprintf(stderr, "clock_gettime() returned error (%d)!", errno); |
| return AMDGPU_TIMEOUT_INFINITE; |
| } |
| |
| current_ns = ((uint64_t)current.tv_sec) * 1000000000ull; |
| current_ns += current.tv_nsec; |
| timeout += current_ns; |
| if (timeout < current_ns) |
| timeout = AMDGPU_TIMEOUT_INFINITE; |
| } |
| return timeout; |
| } |
| |
| static int amdgpu_ioctl_wait_cs(amdgpu_context_handle context, |
| unsigned ip, |
| unsigned ip_instance, |
| uint32_t ring, |
| uint64_t handle, |
| uint64_t timeout_ns, |
| uint64_t flags, |
| bool *busy) |
| { |
| amdgpu_device_handle dev = context->dev; |
| union drm_amdgpu_wait_cs args; |
| int r; |
| |
| memset(&args, 0, sizeof(args)); |
| args.in.handle = handle; |
| args.in.ip_type = ip; |
| args.in.ip_instance = ip_instance; |
| args.in.ring = ring; |
| args.in.ctx_id = context->id; |
| |
| if (flags & AMDGPU_QUERY_FENCE_TIMEOUT_IS_ABSOLUTE) |
| args.in.timeout = timeout_ns; |
| else |
| args.in.timeout = amdgpu_cs_calculate_timeout(timeout_ns); |
| |
| r = drmIoctl(dev->fd, DRM_IOCTL_AMDGPU_WAIT_CS, &args); |
| if (r) |
| return -errno; |
| |
| *busy = args.out.status; |
| return 0; |
| } |
| |
| int amdgpu_cs_query_fence_status(struct amdgpu_cs_fence *fence, |
| uint64_t timeout_ns, |
| uint64_t flags, |
| uint32_t *expired) |
| { |
| bool busy = true; |
| int r; |
| |
| if (NULL == fence) |
| return -EINVAL; |
| if (NULL == expired) |
| return -EINVAL; |
| if (NULL == fence->context) |
| return -EINVAL; |
| if (fence->ip_type >= AMDGPU_HW_IP_NUM) |
| return -EINVAL; |
| if (fence->ring >= AMDGPU_CS_MAX_RINGS) |
| return -EINVAL; |
| |
| *expired = false; |
| |
| r = amdgpu_ioctl_wait_cs(fence->context, fence->ip_type, |
| fence->ip_instance, fence->ring, |
| fence->fence, timeout_ns, flags, &busy); |
| |
| if (!r && !busy) |
| *expired = true; |
| |
| return r; |
| } |
| |