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5d01b56f05
The system and GPU MMU page size might differ, which becomes a
problem for FW sections that need to be mapped at explicit addresses
since our PAGE_SIZE alignment might cover a VA range that's
expected to be used for another section.
Make sure we never map more than we need.
Changes in v3:
- Add R-bs
Changes in v2:
- Plan for per-VM page sizes so the MCU VM and user VM can
have different pages sizes
Fixes: 2718d91816ee ("drm/panthor: Add the FW logical block")
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241030150231.768949-1-boris.brezillon@collabora.com
105 lines
3.8 KiB
C
105 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 or MIT */
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/* Copyright 2019 Linaro, Ltd, Rob Herring <robh@kernel.org> */
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/* Copyright 2023 Collabora ltd. */
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#ifndef __PANTHOR_MMU_H__
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#define __PANTHOR_MMU_H__
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#include <linux/dma-resv.h>
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struct drm_exec;
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struct drm_sched_job;
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struct panthor_gem_object;
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struct panthor_heap_pool;
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struct panthor_vm;
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struct panthor_vma;
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struct panthor_mmu;
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int panthor_mmu_init(struct panthor_device *ptdev);
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void panthor_mmu_unplug(struct panthor_device *ptdev);
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void panthor_mmu_pre_reset(struct panthor_device *ptdev);
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void panthor_mmu_post_reset(struct panthor_device *ptdev);
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void panthor_mmu_suspend(struct panthor_device *ptdev);
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void panthor_mmu_resume(struct panthor_device *ptdev);
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int panthor_vm_map_bo_range(struct panthor_vm *vm, struct panthor_gem_object *bo,
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u64 offset, u64 size, u64 va, u32 flags);
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int panthor_vm_unmap_range(struct panthor_vm *vm, u64 va, u64 size);
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struct panthor_gem_object *
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panthor_vm_get_bo_for_va(struct panthor_vm *vm, u64 va, u64 *bo_offset);
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int panthor_vm_active(struct panthor_vm *vm);
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void panthor_vm_idle(struct panthor_vm *vm);
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u32 panthor_vm_page_size(struct panthor_vm *vm);
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int panthor_vm_as(struct panthor_vm *vm);
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int panthor_vm_flush_all(struct panthor_vm *vm);
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struct panthor_heap_pool *
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panthor_vm_get_heap_pool(struct panthor_vm *vm, bool create);
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struct panthor_vm *panthor_vm_get(struct panthor_vm *vm);
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void panthor_vm_put(struct panthor_vm *vm);
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struct panthor_vm *panthor_vm_create(struct panthor_device *ptdev, bool for_mcu,
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u64 kernel_va_start, u64 kernel_va_size,
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u64 kernel_auto_va_start,
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u64 kernel_auto_va_size);
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int panthor_vm_prepare_mapped_bos_resvs(struct drm_exec *exec,
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struct panthor_vm *vm,
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u32 slot_count);
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int panthor_vm_add_bos_resvs_deps_to_job(struct panthor_vm *vm,
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struct drm_sched_job *job);
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void panthor_vm_add_job_fence_to_bos_resvs(struct panthor_vm *vm,
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struct drm_sched_job *job);
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struct dma_resv *panthor_vm_resv(struct panthor_vm *vm);
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struct drm_gem_object *panthor_vm_root_gem(struct panthor_vm *vm);
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void panthor_vm_pool_destroy(struct panthor_file *pfile);
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int panthor_vm_pool_create(struct panthor_file *pfile);
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int panthor_vm_pool_create_vm(struct panthor_device *ptdev,
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struct panthor_vm_pool *pool,
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struct drm_panthor_vm_create *args);
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int panthor_vm_pool_destroy_vm(struct panthor_vm_pool *pool, u32 handle);
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struct panthor_vm *panthor_vm_pool_get_vm(struct panthor_vm_pool *pool, u32 handle);
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bool panthor_vm_has_unhandled_faults(struct panthor_vm *vm);
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bool panthor_vm_is_unusable(struct panthor_vm *vm);
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/*
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* PANTHOR_VM_KERNEL_AUTO_VA: Use this magic address when you want the GEM
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* logic to auto-allocate the virtual address in the reserved kernel VA range.
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*/
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#define PANTHOR_VM_KERNEL_AUTO_VA ~0ull
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int panthor_vm_alloc_va(struct panthor_vm *vm, u64 va, u64 size,
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struct drm_mm_node *va_node);
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void panthor_vm_free_va(struct panthor_vm *vm, struct drm_mm_node *va_node);
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int panthor_vm_bind_exec_sync_op(struct drm_file *file,
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struct panthor_vm *vm,
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struct drm_panthor_vm_bind_op *op);
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struct drm_sched_job *
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panthor_vm_bind_job_create(struct drm_file *file,
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struct panthor_vm *vm,
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const struct drm_panthor_vm_bind_op *op);
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void panthor_vm_bind_job_put(struct drm_sched_job *job);
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int panthor_vm_bind_job_prepare_resvs(struct drm_exec *exec,
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struct drm_sched_job *job);
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void panthor_vm_bind_job_update_resvs(struct drm_exec *exec, struct drm_sched_job *job);
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void panthor_vm_update_resvs(struct panthor_vm *vm, struct drm_exec *exec,
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struct dma_fence *fence,
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enum dma_resv_usage private_usage,
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enum dma_resv_usage extobj_usage);
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int panthor_mmu_pt_cache_init(void);
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void panthor_mmu_pt_cache_fini(void);
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#ifdef CONFIG_DEBUG_FS
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void panthor_mmu_debugfs_init(struct drm_minor *minor);
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#endif
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#endif
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