Junhua Shen
9da1572c42
* Introduce HsaKFDContext structure and infrastructure for multiple KFD contexts, enabling independent contexts within a single process. * Refactor core components (queue, event, FMM, topology) to be context-aware, using explicit HsaKFDContext parameters instead of global state. * Replace global hsakmt_kfd_fd with context-specific file descriptors, ensuring full context isolation. * Maintain backward compatibility by redirecting legacy APIs to use the primary context. This refactoring establishes a foundation for multi-context support while preserving existing functionality. Signed-off-by: Junhua Shen <Junhua.Shen@amd.com>
78 righe
2.5 KiB
C
78 righe
2.5 KiB
C
/*
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* Copyright © 2023 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including
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* the next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include "libhsakmt.h"
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#include "hsakmt/linux/kfd_ioctl.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include "fmm.h"
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HSAKMT_STATUS HSAKMTAPI hsaKmtAisReadWriteFile(void *MemoryAddress,
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HSAuint64 MemorySizeInBytes,
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HSAint32 fd,
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HSAint64 file_offset,
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HsaAisFlags AisFlags,
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HSAuint64 *SizeCopiedInBytes,
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HSAint32 *status)
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{
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CHECK_KFD_OPEN();
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struct kfd_ioctl_ais_args args = {0};
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uint64_t handle, size_offset = MemorySizeInBytes;
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int ret;
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/* Support is only for dGPUs */
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if (!hsakmt_fmm_get_handle(&hsakmt_primary_kfd_ctx, MemoryAddress, &handle, &size_offset)) {
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pr_err("Address/size out of range: %p/%lu\n", MemoryAddress, MemorySizeInBytes);
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return HSAKMT_STATUS_INVALID_PARAMETER;
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}
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args.in.handle = handle;
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args.in.fd = fd;
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args.in.file_offset = file_offset;
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args.in.size = MemorySizeInBytes;
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if (AisFlags == HSA_AIS_WRITE)
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args.in.op = KFD_IOC_AIS_WRITE;
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else if (AisFlags == HSA_AIS_READ)
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args.in.op = KFD_IOC_AIS_READ;
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else {
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pr_err("Invalid AisFlags: %d\n", AisFlags);
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return HSAKMT_STATUS_INVALID_PARAMETER;
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}
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args.in.handle_offset = size_offset;
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ret = hsakmt_ioctl(hsakmt_primary_kfd_ctx.fd, AMDKFD_IOC_AIS_OP, &args);
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if (SizeCopiedInBytes)
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*SizeCopiedInBytes = args.out.size_copied;
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if (status)
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*status = args.out.status;
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return (ret < 0) ? HSAKMT_STATUS_ERROR : HSAKMT_STATUS_SUCCESS;
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}
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