1 /*
2 * Copyright 2018 Advanced Micro Devices, Inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
16 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
17 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
18 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
19 * USE OR OTHER DEALINGS IN THE SOFTWARE.
20 *
21 * The above copyright notice and this permission notice (including the
22 * next paragraph) shall be included in all copies or substantial portions
23 * of the Software.
24 *
25 */
26 #ifndef __AMDGPU_GMC_H__
27 #define __AMDGPU_GMC_H__
28
29 #include <linux/types.h>
30
31 #include "amdgpu_irq.h"
32
33 struct firmware;
34
35 /*
36 * VMHUB structures, functions & helpers
37 */
38 struct amdgpu_vmhub {
39 uint32_t ctx0_ptb_addr_lo32;
40 uint32_t ctx0_ptb_addr_hi32;
41 uint32_t vm_inv_eng0_req;
42 uint32_t vm_inv_eng0_ack;
43 uint32_t vm_context0_cntl;
44 uint32_t vm_l2_pro_fault_status;
45 uint32_t vm_l2_pro_fault_cntl;
46 };
47
48 /*
49 * GPU MC structures, functions & helpers
50 */
51 struct amdgpu_gmc_funcs {
52 /* flush the vm tlb via mmio */
53 void (*flush_gpu_tlb)(struct amdgpu_device *adev,
54 uint32_t vmid);
55 /* flush the vm tlb via ring */
56 uint64_t (*emit_flush_gpu_tlb)(struct amdgpu_ring *ring, unsigned vmid,
57 uint64_t pd_addr);
58 /* Change the VMID -> PASID mapping */
59 void (*emit_pasid_mapping)(struct amdgpu_ring *ring, unsigned vmid,
60 unsigned pasid);
61 /* write pte/pde updates using the cpu */
62 int (*set_pte_pde)(struct amdgpu_device *adev,
63 void *cpu_pt_addr, /* cpu addr of page table */
64 uint32_t gpu_page_idx, /* pte/pde to update */
65 uint64_t addr, /* addr to write into pte/pde */
66 uint64_t flags); /* access flags */
67 /* enable/disable PRT support */
68 void (*set_prt)(struct amdgpu_device *adev, bool enable);
69 /* set pte flags based per asic */
70 uint64_t (*get_vm_pte_flags)(struct amdgpu_device *adev,
71 uint32_t flags);
72 /* get the pde for a given mc addr */
73 void (*get_vm_pde)(struct amdgpu_device *adev, int level,
74 uint64_t *dst, uint64_t *flags);
75 };
76
77 struct amdgpu_gmc {
78 resource_size_t aper_size;
79 resource_size_t aper_base;
80 /* for some chips with <= 32MB we need to lie
81 * about vram size near mc fb location */
82 u64 mc_vram_size;
83 u64 visible_vram_size;
84 u64 gart_size;
85 u64 gart_start;
86 u64 gart_end;
87 u64 vram_start;
88 u64 vram_end;
89 unsigned vram_width;
90 u64 real_vram_size;
91 int vram_mtrr;
92 u64 mc_mask;
93 const struct firmware *fw; /* MC firmware */
94 uint32_t fw_version;
95 struct amdgpu_irq_src vm_fault;
96 uint32_t vram_type;
97 uint32_t srbm_soft_reset;
98 bool prt_warning;
99 uint64_t stolen_size;
100 uint32_t sdpif_register;
101 /* apertures */
102 u64 shared_aperture_start;
103 u64 shared_aperture_end;
104 u64 private_aperture_start;
105 u64 private_aperture_end;
106 /* protects concurrent invalidation */
107 struct spinlock invalidate_lock;
108 bool translate_further;
109 struct kfd_vm_fault_info *vm_fault_info;
110 atomic_t vm_fault_info_updated;
111
112 const struct amdgpu_gmc_funcs *gmc_funcs;
113 };
114
115 /**
116 * amdgpu_gmc_vram_full_visible - Check if full VRAM is visible through the BAR
117 *
118 * @adev: amdgpu_device pointer
119 *
120 * Returns:
121 * True if full VRAM is visible through the BAR
122 */
amdgpu_gmc_vram_full_visible(struct amdgpu_gmc * gmc)123 static inline bool amdgpu_gmc_vram_full_visible(struct amdgpu_gmc *gmc)
124 {
125 WARN_ON(gmc->real_vram_size < gmc->visible_vram_size);
126
127 return (gmc->real_vram_size == gmc->visible_vram_size);
128 }
129
130 #endif
131