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a74f4d9913
Defer root page table allocation and unify context init/fini functions. Move allocation of the root page table from the file_priv_open function to perform a lazy allocation approach during ivpu_bo_pin(). By doing so, we avoid the overhead of allocating page tables for simple operations like GET_PARAM that do not require them. Additionally, the MMU context descriptor table initialization has been moved to the ivpu_mmu_context_map_page function. This change streamlines the process and ensures that the descriptor table is only initialized when it is actually needed. Refactor init/fini functions to remove redundant code and make the context management more straightforward. Overall, these changes lead to a reduction in the time taken by the file descriptor open operation, as the costly root page table allocation is now avoided for operations that do not require it. Signed-off-by: Karol Wachowski <karol.wachowski@intel.com> Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com> Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241017145817.121590-3-jacek.lawrynowicz@linux.intel.com
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2020-2023 Intel Corporation
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*/
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#ifndef __IVPU_MMU_H__
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#define __IVPU_MMU_H__
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struct ivpu_device;
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struct ivpu_mmu_cdtab {
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void *base;
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dma_addr_t dma;
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};
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struct ivpu_mmu_strtab {
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void *base;
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dma_addr_t dma;
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u64 dma_q;
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u32 base_cfg;
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};
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struct ivpu_mmu_queue {
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void *base;
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dma_addr_t dma;
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u64 dma_q;
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u32 prod;
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u32 cons;
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};
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struct ivpu_mmu_info {
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struct mutex lock; /* Protects cdtab, strtab, cmdq, on */
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struct ivpu_mmu_cdtab cdtab;
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struct ivpu_mmu_strtab strtab;
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struct ivpu_mmu_queue cmdq;
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struct ivpu_mmu_queue evtq;
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bool on;
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};
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int ivpu_mmu_init(struct ivpu_device *vdev);
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void ivpu_mmu_disable(struct ivpu_device *vdev);
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int ivpu_mmu_enable(struct ivpu_device *vdev);
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int ivpu_mmu_cd_set(struct ivpu_device *vdev, int ssid, struct ivpu_mmu_pgtable *pgtable);
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void ivpu_mmu_cd_clear(struct ivpu_device *vdev, int ssid);
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int ivpu_mmu_invalidate_tlb(struct ivpu_device *vdev, u16 ssid);
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void ivpu_mmu_irq_evtq_handler(struct ivpu_device *vdev);
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void ivpu_mmu_irq_gerr_handler(struct ivpu_device *vdev);
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void ivpu_mmu_evtq_dump(struct ivpu_device *vdev);
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#endif /* __IVPU_MMU_H__ */
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