mirror of
https://github.com/Yours3lf/rpi-vk-driver.git
synced 2024-12-12 00:08:54 +01:00
550 lines
18 KiB
C
550 lines
18 KiB
C
#include "common.h"
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#include "kernel/vc4_packet.h"
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//-----------------------------
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//Semaphore vs Fence:
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// Semaphore is GPU to GPU sync
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// Fence is GPU to CPU sync
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// Both are signalled by the GPU
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// Both are multi-queue
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// But Fence can be waited on by the CPU
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// Semaphore can only be waited on by the GPU
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//
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//Events are general can be signalled by the CPU or the GPU
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// But can only be waited on by the GPU
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// Limited to a single queue
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//
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//TODO as a result the current semaphore
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//implementation is wrong
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//maybe use:
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//clInsertWaitOnSemaphore
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//clInsertIncrementSemaphore
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//
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//seems like each binCL needs to end with increment semaphore
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//signalling that binning is done
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//and each renderCL starts with a wait semaphore (to wait for binning)
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//
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//in theory we could add a wait for semaphore to the start of a binCL
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//and an increment semaphore to either to the end of another binCL or renderCL
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//but we can't control renderCLs as the kernel side creates those...
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//
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//also there's only one of this semaphore, and in Vulkan you can have many
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//and should only signal those selected
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//so maybe we could emulate this in shaders?
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//ie. stall shader until a value is something?
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//and increment said value?
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//but we'd need to patch shaders and it'd probably be slow...
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//
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//Apparently the RPi contains 16 4bit semaphores that are accessible for each QPU via SFU
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//-----------------------------
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/*
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* https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/vkspec.html#vkCreateSemaphore
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* Semaphores are a synchronization primitive that can be used to insert a dependency between batches submitted to queues.
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* Semaphores have two states - signaled and unsignaled. The state of a semaphore can be signaled after execution of a batch of commands is completed.
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* A batch can wait for a semaphore to become signaled before it begins execution, and the semaphore is also unsignaled before the batch begins execution.
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* As with most objects in Vulkan, semaphores are an interface to internal data which is typically opaque to applications.
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* This internal data is referred to as a semaphore’s payload. However, in order to enable communication with agents outside of the current device,
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* it is necessary to be able to export that payload to a commonly understood format, and subsequently import from that format as well.
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* The internal data of a semaphore may include a reference to any resources and pending work associated with signal or unsignal operations performed on that semaphore object.
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* Mechanisms to import and export that internal data to and from semaphores are provided below.
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* These mechanisms indirectly enable applications to share semaphore state between two or more semaphores and other synchronization primitives across process and API boundaries.
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* When created, the semaphore is in the unsignaled state.
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*/
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VKAPI_ATTR VkResult VKAPI_CALL rpi_vkCreateSemaphore(
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VkDevice device,
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const VkSemaphoreCreateInfo* pCreateInfo,
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const VkAllocationCallbacks* pAllocator,
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VkSemaphore* pSemaphore)
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{
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PROFILESTART(rpi_vkCreateSemaphore);
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assert(device);
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assert(pSemaphore);
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//we'll probably just use an IOCTL to wait for a GPU sequence number to complete.
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sem_t* s = ALLOCATE(sizeof(sem_t), 1, VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
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if(!s)
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{
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PROFILEEND(rpi_vkCreateSemaphore);
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return VK_ERROR_OUT_OF_HOST_MEMORY;
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}
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sem_init(s, 0, 0); //create semaphore unsignalled, shared between threads
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*pSemaphore = (VkSemaphore)s;
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PROFILEEND(rpi_vkCreateSemaphore);
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return VK_SUCCESS;
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}
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/*
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* https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/vkspec.html#vkCmdPipelineBarrier
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* vkCmdPipelineBarrier is a synchronization command that inserts a dependency between commands submitted to the same queue, or between commands in the same subpass.
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* When vkCmdPipelineBarrier is submitted to a queue, it defines a memory dependency between commands that were submitted before it, and those submitted after it.
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* If vkCmdPipelineBarrier was recorded outside a render pass instance, the first synchronization scope includes all commands that occur earlier in submission order.
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* If vkCmdPipelineBarrier was recorded inside a render pass instance, the first synchronization scope includes only commands that occur earlier in submission order within the same subpass.
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* In either case, the first synchronization scope is limited to operations on the pipeline stages determined by the source stage mask specified by srcStageMask.
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*
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* If vkCmdPipelineBarrier was recorded outside a render pass instance, the second synchronization scope includes all commands that occur later in submission order.
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* If vkCmdPipelineBarrier was recorded inside a render pass instance, the second synchronization scope includes only commands that occur later in submission order within the same subpass.
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* In either case, the second synchronization scope is limited to operations on the pipeline stages determined by the destination stage mask specified by dstStageMask.
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*
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* The first access scope is limited to access in the pipeline stages determined by the source stage mask specified by srcStageMask.
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* Within that, the first access scope only includes the first access scopes defined by elements of the pMemoryBarriers,
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* pBufferMemoryBarriers and pImageMemoryBarriers arrays, which each define a set of memory barriers. If no memory barriers are specified,
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* then the first access scope includes no accesses.
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*
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* The second access scope is limited to access in the pipeline stages determined by the destination stage mask specified by dstStageMask.
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* Within that, the second access scope only includes the second access scopes defined by elements of the pMemoryBarriers, pBufferMemoryBarriers and pImageMemoryBarriers arrays,
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* which each define a set of memory barriers. If no memory barriers are specified, then the second access scope includes no accesses.
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*
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* If dependencyFlags includes VK_DEPENDENCY_BY_REGION_BIT, then any dependency between framebuffer-space pipeline stages is framebuffer-local - otherwise it is framebuffer-global.
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*/
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VKAPI_ATTR void VKAPI_CALL rpi_vkCmdPipelineBarrier(
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VkCommandBuffer commandBuffer,
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VkPipelineStageFlags srcStageMask,
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VkPipelineStageFlags dstStageMask,
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VkDependencyFlags dependencyFlags,
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uint32_t memoryBarrierCount,
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const VkMemoryBarrier* pMemoryBarriers,
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uint32_t bufferMemoryBarrierCount,
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const VkBufferMemoryBarrier* pBufferMemoryBarriers,
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uint32_t imageMemoryBarrierCount,
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const VkImageMemoryBarrier* pImageMemoryBarriers)
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{
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PROFILESTART(rpi_vkCmdPipelineBarrier);
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assert(commandBuffer);
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//TODO pipeline stage flags
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//VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT
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//VK_PIPELINE_STAGE_DRAW_INDIRECT_BIT
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//VK_PIPELINE_STAGE_VERTEX_INPUT_BIT
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//VK_PIPELINE_STAGE_VERTEX_SHADER_BIT
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//VK_PIPELINE_STAGE_TESSELLATION_CONTROL_SHADER_BIT
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//VK_PIPELINE_STAGE_TESSELLATION_EVALUATION_SHADER_BIT
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//VK_PIPELINE_STAGE_GEOMETRY_SHADER_BIT
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//VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT
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//VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT
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//VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT
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//VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT
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//VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT
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//VK_PIPELINE_STAGE_TRANSFER_BIT
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//VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT
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//VK_PIPELINE_STAGE_HOST_BIT
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//VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT
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//VK_PIPELINE_STAGE_ALL_COMMANDS_BIT
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//TODO dependency flags
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//VK_DEPENDENCY_BY_REGION_BIT,
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//VK_DEPENDENCY_DEVICE_GROUP_BIT,
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//VK_DEPENDENCY_VIEW_LOCAL_BIT
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//TODO access flags
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//VK_ACCESS_INDIRECT_COMMAND_READ_BIT
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//VK_ACCESS_INDEX_READ_BIT
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//VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT
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//VK_ACCESS_UNIFORM_READ_BIT
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//VK_ACCESS_INPUT_ATTACHMENT_READ_BIT
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//VK_ACCESS_SHADER_READ_BIT
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//VK_ACCESS_SHADER_WRITE_BIT
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//VK_ACCESS_COLOR_ATTACHMENT_READ_BIT
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//VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT
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//VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT
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//VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT
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//VK_ACCESS_TRANSFER_READ_BIT
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//VK_ACCESS_TRANSFER_WRITE_BIT
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//VK_ACCESS_HOST_READ_BIT
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//VK_ACCESS_HOST_WRITE_BIT
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//VK_ACCESS_MEMORY_READ_BIT
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//VK_ACCESS_MEMORY_WRITE_BIT
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//VK_ACCESS_COMMAND_PROCESS_READ_BIT_NVX
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//VK_ACCESS_COMMAND_PROCESS_WRITE_BIT_NVX
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//TODO Layout transition flags
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//VK_IMAGE_LAYOUT_UNDEFINED
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//VK_IMAGE_LAYOUT_GENERAL
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//VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL
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//VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL
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//VK_IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL
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//VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL
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//VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL
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//VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL
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//VK_IMAGE_LAYOUT_PREINITIALIZED
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//VK_IMAGE_LAYOUT_DEPTH_READ_ONLY_STENCIL_ATTACHMENT_OPTIMAL
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//VK_IMAGE_LAYOUT_DEPTH_ATTACHMENT_STENCIL_READ_ONLY_OPTIMAL
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//VK_IMAGE_LAYOUT_PRESENT_SRC_KHR
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//VK_IMAGE_LAYOUT_SHARED_PRESENT_KHR
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for(int c = 0; c < memoryBarrierCount; ++c)
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{
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//TODO
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}
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for(int c = 0; c < bufferMemoryBarrierCount; ++c)
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{
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//TODO
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}
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for(int c = 0; c < imageMemoryBarrierCount; ++c)
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{
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_image* i = pImageMemoryBarriers[c].image;
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if(srcStageMask & VK_PIPELINE_STAGE_TRANSFER_BIT &&
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pImageMemoryBarriers[c].srcAccessMask & VK_ACCESS_TRANSFER_WRITE_BIT)
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{
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assert(i->layout == VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL);
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}
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//transition to new layout
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i->layout = pImageMemoryBarriers[c].newLayout;
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}
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PROFILEEND(rpi_vkCmdPipelineBarrier);
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}
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/*
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* https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/vkspec.html#vkDeviceWaitIdle
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* vkDeviceWaitIdle is equivalent to calling vkQueueWaitIdle for all queues owned by device.
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*/
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VKAPI_ATTR VkResult VKAPI_CALL rpi_vkDeviceWaitIdle(
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VkDevice device)
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{
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PROFILESTART(rpi_vkDeviceWaitIdle);
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assert(device);
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for(int c = 0; c < numQueueFamilies; ++c)
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{
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for(int d = 0; d < device->numQueues[c]; ++d)
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{
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uint64_t lastFinishedSeqno;
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uint64_t timeout = WAIT_TIMEOUT_INFINITE;
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vc4_seqno_wait(controlFd, &lastFinishedSeqno, device->queues[c][d].lastEmitSeqno, &timeout);
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}
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}
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PROFILEEND(rpi_vkDeviceWaitIdle);
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return VK_SUCCESS;
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}
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/*
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* https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/vkspec.html#vkQueueWaitIdle
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*/
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VKAPI_ATTR VkResult VKAPI_CALL rpi_vkQueueWaitIdle(
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VkQueue queue)
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{
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PROFILESTART(rpi_vkQueueWaitIdle);
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assert(queue);
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_queue* q = queue;
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uint64_t lastFinishedSeqno;
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uint64_t timeout = WAIT_TIMEOUT_INFINITE;
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vc4_seqno_wait(controlFd, &lastFinishedSeqno, q->lastEmitSeqno, &timeout);
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PROFILEEND(rpi_vkQueueWaitIdle);
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return VK_SUCCESS;
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}
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/*
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* https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/vkspec.html#vkDestroySemaphore
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*/
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VKAPI_ATTR void VKAPI_CALL rpi_vkDestroySemaphore(
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VkDevice device,
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VkSemaphore semaphore,
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const VkAllocationCallbacks* pAllocator)
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{
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PROFILESTART(rpi_vkDestroySemaphore);
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assert(device);
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if(semaphore)
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{
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sem_destroy((sem_t*)semaphore);
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FREE(semaphore);
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}
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PROFILEEND(rpi_vkDestroySemaphore);
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}
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/*
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* https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/vkspec.html#vkCreateFence
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*/
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VKAPI_ATTR VkResult VKAPI_CALL rpi_vkCreateFence(
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VkDevice device,
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const VkFenceCreateInfo* pCreateInfo,
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const VkAllocationCallbacks* pAllocator,
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VkFence* pFence)
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{
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PROFILESTART(rpi_vkCreateFence);
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assert(device);
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assert(pCreateInfo);
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assert(pFence);
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_fence* f = ALLOCATE(sizeof(_fence), 1, VK_SYSTEM_ALLOCATION_SCOPE_OBJECT);
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if(!f)
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{
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PROFILEEND(rpi_vkCreateFence);
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return VK_ERROR_OUT_OF_HOST_MEMORY;
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}
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f->seqno = 0;
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f->signaled = pCreateInfo->flags & VK_FENCE_CREATE_SIGNALED_BIT;
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*pFence = f;
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PROFILEEND(rpi_vkCreateFence);
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return VK_SUCCESS;
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}
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/*
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* https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/vkspec.html#vkDestroyFence
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*/
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VKAPI_ATTR void VKAPI_CALL rpi_vkDestroyFence(
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VkDevice device,
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VkFence fence,
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const VkAllocationCallbacks* pAllocator)
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{
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PROFILESTART(rpi_vkDestroyFence);
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assert(device);
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if(fence)
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{
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FREE(fence);
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}
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PROFILEEND(rpi_vkDestroyFence);
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}
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/*
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* https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/vkspec.html#vkGetFenceStatus
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*/
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VKAPI_ATTR VkResult VKAPI_CALL rpi_vkGetFenceStatus(
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VkDevice device,
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VkFence fence)
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{
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PROFILESTART(rpi_vkGetFenceStatus);
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assert(device);
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assert(fence);
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//TODO update fence status based on last completed seqno?
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_fence* f = fence;
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VkResult retval = f->signaled ? VK_SUCCESS : VK_NOT_READY;
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PROFILEEND(rpi_vkGetFenceStatus);
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return retval;
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}
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/*
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* https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/vkspec.html#vkResetFences
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*/
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VKAPI_ATTR VkResult VKAPI_CALL rpi_vkResetFences(
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VkDevice device,
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uint32_t fenceCount,
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const VkFence* pFences)
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{
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PROFILESTART(rpi_vkResetFences);
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assert(device);
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assert(pFences);
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assert(fenceCount > 0);
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for(uint32_t c = 0; c < fenceCount; ++c)
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{
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_fence* f = pFences[c];
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f->signaled = 0;
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f->seqno = 0;
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}
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PROFILEEND(rpi_vkResetFences);
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return VK_SUCCESS;
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}
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/*
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* https://www.khronos.org/registry/vulkan/specs/1.1-extensions/html/vkspec.html#vkWaitForFences
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*/
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VKAPI_ATTR VkResult VKAPI_CALL rpi_vkWaitForFences(
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VkDevice device,
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uint32_t fenceCount,
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const VkFence* pFences,
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VkBool32 waitAll,
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uint64_t timeout)
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{
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PROFILESTART(rpi_vkWaitForFences);
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assert(device);
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assert(pFences);
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assert(fenceCount > 0);
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if(waitAll)
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{
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if(!timeout)
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{
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for(uint32_t c = 0; c < fenceCount; ++c)
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{
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_fence* f = pFences[c];
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if(!f->signaled) //if any unsignaled
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{
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PROFILEEND(rpi_vkWaitForFences);
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return VK_TIMEOUT;
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}
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PROFILEEND(rpi_vkWaitForFences);
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return VK_SUCCESS;
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}
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}
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//wait for all to be signaled
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for(uint32_t c = 0; c < fenceCount; ++c)
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{
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_fence* f = pFences[c];
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uint64_t lastFinishedSeqno = 0;
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if(!f->signaled)
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{
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int ret = vc4_seqno_wait(controlFd, &lastFinishedSeqno, f->seqno, &timeout);
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if(ret < 0)
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{
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PROFILEEND(rpi_vkWaitForFences);
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return VK_TIMEOUT;
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}
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f->signaled = 1;
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f->seqno = 0;
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}
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}
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}
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else
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{
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if(!timeout)
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{
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for(uint32_t c = 0; c < fenceCount; ++c)
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{
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_fence* f = pFences[c];
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if(f->signaled) //if any signaled
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{
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PROFILEEND(rpi_vkWaitForFences);
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return VK_SUCCESS;
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}
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PROFILEEND(rpi_vkWaitForFences);
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return VK_TIMEOUT;
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}
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}
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//wait for any to be signaled
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for(uint32_t c = 0; c < fenceCount; ++c)
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{
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_fence* f = pFences[c];
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uint64_t lastFinishedSeqno = 0;
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if(!f->signaled)
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{
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int ret = vc4_seqno_wait(controlFd, &lastFinishedSeqno, f->seqno, &timeout);
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if(ret < 0)
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{
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continue;
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}
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f->signaled = 1;
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f->seqno = 0;
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PROFILEEND(rpi_vkWaitForFences);
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return VK_SUCCESS;
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}
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else
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{
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//already signaled
|
||
PROFILEEND(rpi_vkWaitForFences);
|
||
return VK_SUCCESS;
|
||
}
|
||
}
|
||
|
||
PROFILEEND(rpi_vkWaitForFences);
|
||
return VK_TIMEOUT;
|
||
}
|
||
|
||
PROFILEEND(rpi_vkWaitForFences);
|
||
return VK_SUCCESS;
|
||
}
|
||
|
||
VKAPI_ATTR void VKAPI_CALL rpi_vkCmdWaitEvents(
|
||
VkCommandBuffer commandBuffer,
|
||
uint32_t eventCount,
|
||
const VkEvent* pEvents,
|
||
VkPipelineStageFlags srcStageMask,
|
||
VkPipelineStageFlags dstStageMask,
|
||
uint32_t memoryBarrierCount,
|
||
const VkMemoryBarrier* pMemoryBarriers,
|
||
uint32_t bufferMemoryBarrierCount,
|
||
const VkBufferMemoryBarrier* pBufferMemoryBarriers,
|
||
uint32_t imageMemoryBarrierCount,
|
||
const VkImageMemoryBarrier* pImageMemoryBarriers)
|
||
{
|
||
UNSUPPORTED(vkCmdWaitEvents);
|
||
}
|
||
|
||
VKAPI_ATTR VkResult VKAPI_CALL rpi_vkGetEventStatus(
|
||
VkDevice device,
|
||
VkEvent event)
|
||
{
|
||
UNSUPPORTED(vkGetEventStatus);
|
||
return UNSUPPORTED_RETURN;
|
||
}
|
||
|
||
VKAPI_ATTR void VKAPI_CALL rpi_vkDestroyEvent(
|
||
VkDevice device,
|
||
VkEvent event,
|
||
const VkAllocationCallbacks* pAllocator)
|
||
{
|
||
UNSUPPORTED(vkDestroyEvent);
|
||
}
|
||
|
||
VKAPI_ATTR void VKAPI_CALL rpi_vkCmdResetEvent(
|
||
VkCommandBuffer commandBuffer,
|
||
VkEvent event,
|
||
VkPipelineStageFlags stageMask)
|
||
{
|
||
UNSUPPORTED(vkCmdResetEvent);
|
||
}
|
||
|
||
VKAPI_ATTR VkResult VKAPI_CALL rpi_vkCreateEvent(
|
||
VkDevice device,
|
||
const VkEventCreateInfo* pCreateInfo,
|
||
const VkAllocationCallbacks* pAllocator,
|
||
VkEvent* pEvent)
|
||
{
|
||
UNSUPPORTED(vkCreateEvent);
|
||
return UNSUPPORTED_RETURN;
|
||
}
|
||
|
||
VKAPI_ATTR VkResult VKAPI_CALL rpi_vkResetEvent(
|
||
VkDevice device,
|
||
VkEvent event)
|
||
{
|
||
UNSUPPORTED(vkResetEvent);
|
||
return UNSUPPORTED_RETURN;
|
||
}
|
||
|
||
VKAPI_ATTR VkResult VKAPI_CALL rpi_vkSetEvent(
|
||
VkDevice device,
|
||
VkEvent event)
|
||
{
|
||
UNSUPPORTED(vkSetEvent);
|
||
return UNSUPPORTED_RETURN;
|
||
}
|
||
|
||
VKAPI_ATTR void VKAPI_CALL rpi_vkCmdSetEvent(
|
||
VkCommandBuffer commandBuffer,
|
||
VkEvent event,
|
||
VkPipelineStageFlags stageMask)
|
||
{
|
||
UNSUPPORTED(vkCmdSetEvent);
|
||
}
|