2 * Copyright 2019 Advanced Micro Devices, Inc.
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23 #include "amdgpu_vm.h"
24 #include "amdgpu_object.h"
25 #include "amdgpu_trace.h"
28 * amdgpu_vm_cpu_map_table - make sure new PDs/PTs are kmapped
30 * @table: newly allocated or validated PD/PT
32 static int amdgpu_vm_cpu_map_table(struct amdgpu_bo_vm *table)
34 return amdgpu_bo_kmap(&table->bo, NULL);
38 * amdgpu_vm_cpu_prepare - prepare page table update with the CPU
40 * @p: see amdgpu_vm_update_params definition
41 * @resv: reservation object with embedded fence
42 * @sync_mode: synchronization mode
45 * Negativ errno, 0 for success.
47 static int amdgpu_vm_cpu_prepare(struct amdgpu_vm_update_params *p,
48 struct dma_resv *resv,
49 enum amdgpu_sync_mode sync_mode)
54 return amdgpu_bo_sync_wait_resv(p->adev, resv, sync_mode, p->vm, true);
58 * amdgpu_vm_cpu_update - helper to update page tables via CPU
60 * @p: see amdgpu_vm_update_params definition
61 * @vmbo: PD/PT to update
62 * @pe: byte offset of the PDE/PTE, relative to start of PDB/PTB
63 * @addr: dst addr to write into pe
64 * @count: number of page entries to update
65 * @incr: increase next addr by incr bytes
66 * @flags: hw access flags
68 * Write count number of PT/PD entries directly.
70 static int amdgpu_vm_cpu_update(struct amdgpu_vm_update_params *p,
71 struct amdgpu_bo_vm *vmbo, uint64_t pe,
72 uint64_t addr, unsigned count, uint32_t incr,
79 r = dma_resv_wait_timeout(vmbo->bo.tbo.base.resv, DMA_RESV_USAGE_KERNEL,
80 true, MAX_SCHEDULE_TIMEOUT);
84 pe += (unsigned long)amdgpu_bo_kptr(&vmbo->bo);
86 trace_amdgpu_vm_set_ptes(pe, addr, count, incr, flags, p->immediate);
88 for (i = 0; i < count; i++) {
89 value = p->pages_addr ?
90 amdgpu_vm_map_gart(p->pages_addr, addr) :
92 amdgpu_gmc_set_pte_pde(p->adev, (void *)(uintptr_t)pe,
100 * amdgpu_vm_cpu_commit - commit page table update to the HW
102 * @p: see amdgpu_vm_update_params definition
105 * Make sure that the hardware sees the page table updates.
107 static int amdgpu_vm_cpu_commit(struct amdgpu_vm_update_params *p,
108 struct dma_fence **fence)
112 amdgpu_device_flush_hdp(p->adev, NULL);
116 const struct amdgpu_vm_update_funcs amdgpu_vm_cpu_funcs = {
117 .map_table = amdgpu_vm_cpu_map_table,
118 .prepare = amdgpu_vm_cpu_prepare,
119 .update = amdgpu_vm_cpu_update,
120 .commit = amdgpu_vm_cpu_commit