1/*
2 * Copyright 2022 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 */
23
24#ifndef AMDGPU_XCP_H
25#define AMDGPU_XCP_H
26
27#include <linux/pci.h>
28#include <linux/xarray.h>
29
30#include "amdgpu_ctx.h"
31
32#define MAX_XCP 8
33
34#define AMDGPU_XCP_MODE_NONE -1
35#define AMDGPU_XCP_MODE_TRANS -2
36
37#define AMDGPU_XCP_FL_NONE 0
38#define AMDGPU_XCP_FL_LOCKED (1 << 0)
39
40#define AMDGPU_XCP_NO_PARTITION (~0)
41
42#define AMDGPU_XCP_OPS_KFD (1 << 0)
43
44struct amdgpu_fpriv;
45
46enum AMDGPU_XCP_IP_BLOCK {
47 AMDGPU_XCP_GFXHUB,
48 AMDGPU_XCP_GFX,
49 AMDGPU_XCP_SDMA,
50 AMDGPU_XCP_VCN,
51 AMDGPU_XCP_MAX_BLOCKS
52};
53
54enum AMDGPU_XCP_STATE {
55 AMDGPU_XCP_PREPARE_SUSPEND,
56 AMDGPU_XCP_SUSPEND,
57 AMDGPU_XCP_PREPARE_RESUME,
58 AMDGPU_XCP_RESUME,
59};
60
61enum amdgpu_xcp_res_id {
62 AMDGPU_XCP_RES_XCC,
63 AMDGPU_XCP_RES_DMA,
64 AMDGPU_XCP_RES_DEC,
65 AMDGPU_XCP_RES_JPEG,
66 AMDGPU_XCP_RES_MAX,
67};
68
69struct amdgpu_xcp_res_details {
70 enum amdgpu_xcp_res_id id;
71 u8 num_inst;
72 u8 num_shared;
73 struct kobject kobj;
74};
75
76struct amdgpu_xcp_cfg {
77 u8 mode;
78 struct amdgpu_xcp_res_details xcp_res[AMDGPU_XCP_RES_MAX];
79 u8 num_res;
80 struct amdgpu_xcp_mgr *xcp_mgr;
81 struct kobject kobj;
82 u16 compatible_nps_modes;
83};
84
85struct amdgpu_xcp_ip_funcs {
86 int (*prepare_suspend)(void *handle, uint32_t inst_mask);
87 int (*suspend)(void *handle, uint32_t inst_mask);
88 int (*prepare_resume)(void *handle, uint32_t inst_mask);
89 int (*resume)(void *handle, uint32_t inst_mask);
90};
91
92struct amdgpu_xcp_ip {
93 struct amdgpu_xcp_ip_funcs *ip_funcs;
94 uint32_t inst_mask;
95
96 enum AMDGPU_XCP_IP_BLOCK ip_id;
97 bool valid;
98};
99
100struct amdgpu_xcp {
101 struct amdgpu_xcp_ip ip[AMDGPU_XCP_MAX_BLOCKS];
102
103 uint8_t id;
104 uint8_t mem_id;
105 bool valid;
106 atomic_t ref_cnt;
107 struct drm_device *ddev;
108 struct drm_device *rdev;
109 struct drm_device *pdev;
110 struct drm_driver *driver;
111 struct drm_vma_offset_manager *vma_offset_manager;
112 struct amdgpu_sched gpu_sched[AMDGPU_HW_IP_NUM][AMDGPU_RING_PRIO_MAX];
113 struct amdgpu_xcp_mgr *xcp_mgr;
114 struct kobject kobj;
115 uint64_t unique_id;
116};
117
118struct amdgpu_xcp_mgr {
119 struct amdgpu_device *adev;
120 struct mutex xcp_lock;
121 struct amdgpu_xcp_mgr_funcs *funcs;
122
123 struct amdgpu_xcp xcp[MAX_XCP];
124 uint8_t num_xcps;
125 int8_t mode;
126
127 /* Used to determine KFD memory size limits per XCP */
128 unsigned int num_xcp_per_mem_partition;
129 struct amdgpu_xcp_cfg *xcp_cfg;
130 uint32_t supp_xcp_modes;
131 uint32_t avail_xcp_modes;
132};
133
134struct amdgpu_xcp_mgr_funcs {
135 int (*switch_partition_mode)(struct amdgpu_xcp_mgr *xcp_mgr, int mode,
136 int *num_xcps);
137 int (*query_partition_mode)(struct amdgpu_xcp_mgr *xcp_mgr);
138 int (*get_ip_details)(struct amdgpu_xcp_mgr *xcp_mgr, int xcp_id,
139 enum AMDGPU_XCP_IP_BLOCK ip_id,
140 struct amdgpu_xcp_ip *ip);
141 int (*get_xcp_mem_id)(struct amdgpu_xcp_mgr *xcp_mgr,
142 struct amdgpu_xcp *xcp, uint8_t *mem_id);
143 int (*get_xcp_res_info)(struct amdgpu_xcp_mgr *xcp_mgr,
144 int mode,
145 struct amdgpu_xcp_cfg *xcp_cfg);
146 int (*prepare_suspend)(struct amdgpu_xcp_mgr *xcp_mgr, int xcp_id);
147 int (*suspend)(struct amdgpu_xcp_mgr *xcp_mgr, int xcp_id);
148 int (*prepare_resume)(struct amdgpu_xcp_mgr *xcp_mgr, int xcp_id);
149 int (*resume)(struct amdgpu_xcp_mgr *xcp_mgr, int xcp_id);
150};
151
152int amdgpu_xcp_prepare_suspend(struct amdgpu_xcp_mgr *xcp_mgr, int xcp_id);
153int amdgpu_xcp_suspend(struct amdgpu_xcp_mgr *xcp_mgr, int xcp_id);
154int amdgpu_xcp_prepare_resume(struct amdgpu_xcp_mgr *xcp_mgr, int xcp_id);
155int amdgpu_xcp_resume(struct amdgpu_xcp_mgr *xcp_mgr, int xcp_id);
156
157int amdgpu_xcp_mgr_init(struct amdgpu_device *adev, int init_mode,
158 int init_xcps, struct amdgpu_xcp_mgr_funcs *xcp_funcs);
159int amdgpu_xcp_init(struct amdgpu_xcp_mgr *xcp_mgr, int num_xcps, int mode);
160int amdgpu_xcp_query_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr, u32 flags);
161int amdgpu_xcp_switch_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr, int mode);
162int amdgpu_xcp_restore_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr);
163int amdgpu_xcp_get_partition(struct amdgpu_xcp_mgr *xcp_mgr,
164 enum AMDGPU_XCP_IP_BLOCK ip, int instance);
165
166int amdgpu_xcp_get_inst_details(struct amdgpu_xcp *xcp,
167 enum AMDGPU_XCP_IP_BLOCK ip,
168 uint32_t *inst_mask);
169
170int amdgpu_xcp_dev_register(struct amdgpu_device *adev,
171 const struct pci_device_id *ent);
172void amdgpu_xcp_dev_unplug(struct amdgpu_device *adev);
173int amdgpu_xcp_open_device(struct amdgpu_device *adev,
174 struct amdgpu_fpriv *fpriv,
175 struct drm_file *file_priv);
176void amdgpu_xcp_release_sched(struct amdgpu_device *adev,
177 struct amdgpu_ctx_entity *entity);
178int amdgpu_xcp_select_scheds(struct amdgpu_device *adev,
179 u32 hw_ip, u32 hw_prio,
180 struct amdgpu_fpriv *fpriv,
181 unsigned int *num_scheds,
182 struct drm_gpu_scheduler ***scheds);
183void amdgpu_xcp_update_supported_modes(struct amdgpu_xcp_mgr *xcp_mgr);
184int amdgpu_xcp_update_partition_sched_list(struct amdgpu_device *adev);
185int amdgpu_xcp_pre_partition_switch(struct amdgpu_xcp_mgr *xcp_mgr, u32 flags);
186int amdgpu_xcp_post_partition_switch(struct amdgpu_xcp_mgr *xcp_mgr, u32 flags);
187void amdgpu_xcp_sysfs_init(struct amdgpu_device *adev);
188void amdgpu_xcp_sysfs_fini(struct amdgpu_device *adev);
189
190static inline int amdgpu_xcp_get_num_xcp(struct amdgpu_xcp_mgr *xcp_mgr)
191{
192 if (!xcp_mgr)
193 return 1;
194 else
195 return xcp_mgr->num_xcps;
196}
197
198static inline struct amdgpu_xcp *
199amdgpu_get_next_xcp(struct amdgpu_xcp_mgr *xcp_mgr, int *from)
200{
201 if (!xcp_mgr)
202 return NULL;
203
204 while (*from < MAX_XCP) {
205 if (xcp_mgr->xcp[*from].valid)
206 return &xcp_mgr->xcp[*from];
207 ++(*from);
208 }
209
210 return NULL;
211}
212
213#define for_each_xcp(xcp_mgr, xcp, i) \
214 for (i = 0, xcp = amdgpu_get_next_xcp(xcp_mgr, &i); xcp; \
215 ++i, xcp = amdgpu_get_next_xcp(xcp_mgr, &i))
216
217#endif
218

source code of linux/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.h