1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright 2018 Marty E. Plummer <hanetzer@startmail.com> */
3 /* Copyright 2019 Linaro, Ltd, Rob Herring <robh@kernel.org> */
4
5 #ifndef __PANFROST_DEVICE_H__
6 #define __PANFROST_DEVICE_H__
7
8 #include <linux/atomic.h>
9 #include <linux/io-pgtable.h>
10 #include <linux/regulator/consumer.h>
11 #include <linux/spinlock.h>
12 #include <drm/drm_device.h>
13 #include <drm/drm_mm.h>
14 #include <drm/gpu_scheduler.h>
15
16 #include "panfrost_devfreq.h"
17
18 struct panfrost_device;
19 struct panfrost_mmu;
20 struct panfrost_job_slot;
21 struct panfrost_job;
22 struct panfrost_perfcnt;
23
24 #define NUM_JOB_SLOTS 3
25 #define MAX_PM_DOMAINS 3
26
27 struct panfrost_features {
28 u16 id;
29 u16 revision;
30
31 u64 shader_present;
32 u64 tiler_present;
33 u64 l2_present;
34 u64 stack_present;
35 u32 as_present;
36 u32 js_present;
37
38 u32 l2_features;
39 u32 core_features;
40 u32 tiler_features;
41 u32 mem_features;
42 u32 mmu_features;
43 u32 thread_features;
44 u32 max_threads;
45 u32 thread_max_workgroup_sz;
46 u32 thread_max_barrier_sz;
47 u32 coherency_features;
48 u32 afbc_features;
49 u32 texture_features[4];
50 u32 js_features[16];
51
52 u32 nr_core_groups;
53 u32 thread_tls_alloc;
54
55 unsigned long hw_features[64 / BITS_PER_LONG];
56 unsigned long hw_issues[64 / BITS_PER_LONG];
57 };
58
59 /*
60 * Features that cannot be automatically detected and need matching using the
61 * compatible string, typically SoC-specific.
62 */
63 struct panfrost_compatible {
64 /* Supplies count and names. */
65 int num_supplies;
66 const char * const *supply_names;
67 /*
68 * Number of power domains required, note that values 0 and 1 are
69 * handled identically, as only values > 1 need special handling.
70 */
71 int num_pm_domains;
72 /* Only required if num_pm_domains > 1. */
73 const char * const *pm_domain_names;
74
75 /* Vendor implementation quirks callback */
76 void (*vendor_quirk)(struct panfrost_device *pfdev);
77 };
78
79 struct panfrost_device {
80 struct device *dev;
81 struct drm_device *ddev;
82 struct platform_device *pdev;
83
84 void __iomem *iomem;
85 struct clk *clock;
86 struct clk *bus_clock;
87 struct regulator_bulk_data *regulators;
88 struct reset_control *rstc;
89 /* pm_domains for devices with more than one. */
90 struct device *pm_domain_devs[MAX_PM_DOMAINS];
91 struct device_link *pm_domain_links[MAX_PM_DOMAINS];
92 bool coherent;
93
94 struct panfrost_features features;
95 const struct panfrost_compatible *comp;
96
97 spinlock_t as_lock;
98 unsigned long as_in_use_mask;
99 unsigned long as_alloc_mask;
100 unsigned long as_faulty_mask;
101 struct list_head as_lru_list;
102
103 struct panfrost_job_slot *js;
104
105 struct panfrost_job *jobs[NUM_JOB_SLOTS][2];
106 struct list_head scheduled_jobs;
107
108 struct panfrost_perfcnt *perfcnt;
109
110 struct mutex sched_lock;
111
112 struct {
113 struct workqueue_struct *wq;
114 struct work_struct work;
115 atomic_t pending;
116 } reset;
117
118 struct mutex shrinker_lock;
119 struct list_head shrinker_list;
120 struct shrinker shrinker;
121
122 struct panfrost_devfreq pfdevfreq;
123 };
124
125 struct panfrost_mmu {
126 struct panfrost_device *pfdev;
127 struct kref refcount;
128 struct io_pgtable_cfg pgtbl_cfg;
129 struct io_pgtable_ops *pgtbl_ops;
130 struct drm_mm mm;
131 spinlock_t mm_lock;
132 int as;
133 atomic_t as_count;
134 struct list_head list;
135 };
136
137 struct panfrost_file_priv {
138 struct panfrost_device *pfdev;
139
140 struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
141
142 struct panfrost_mmu *mmu;
143 };
144
to_panfrost_device(struct drm_device * ddev)145 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
146 {
147 return ddev->dev_private;
148 }
149
panfrost_model_cmp(struct panfrost_device * pfdev,s32 id)150 static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
151 {
152 s32 match_id = pfdev->features.id;
153
154 if (match_id & 0xf000)
155 match_id &= 0xf00f;
156 return match_id - id;
157 }
158
panfrost_model_is_bifrost(struct panfrost_device * pfdev)159 static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev)
160 {
161 return panfrost_model_cmp(pfdev, 0x1000) >= 0;
162 }
163
panfrost_model_eq(struct panfrost_device * pfdev,s32 id)164 static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
165 {
166 return !panfrost_model_cmp(pfdev, id);
167 }
168
169 int panfrost_unstable_ioctl_check(void);
170
171 int panfrost_device_init(struct panfrost_device *pfdev);
172 void panfrost_device_fini(struct panfrost_device *pfdev);
173 void panfrost_device_reset(struct panfrost_device *pfdev);
174
175 int panfrost_device_resume(struct device *dev);
176 int panfrost_device_suspend(struct device *dev);
177
178 enum drm_panfrost_exception_type {
179 DRM_PANFROST_EXCEPTION_OK = 0x00,
180 DRM_PANFROST_EXCEPTION_DONE = 0x01,
181 DRM_PANFROST_EXCEPTION_INTERRUPTED = 0x02,
182 DRM_PANFROST_EXCEPTION_STOPPED = 0x03,
183 DRM_PANFROST_EXCEPTION_TERMINATED = 0x04,
184 DRM_PANFROST_EXCEPTION_KABOOM = 0x05,
185 DRM_PANFROST_EXCEPTION_EUREKA = 0x06,
186 DRM_PANFROST_EXCEPTION_ACTIVE = 0x08,
187 DRM_PANFROST_EXCEPTION_MAX_NON_FAULT = 0x3f,
188 DRM_PANFROST_EXCEPTION_JOB_CONFIG_FAULT = 0x40,
189 DRM_PANFROST_EXCEPTION_JOB_POWER_FAULT = 0x41,
190 DRM_PANFROST_EXCEPTION_JOB_READ_FAULT = 0x42,
191 DRM_PANFROST_EXCEPTION_JOB_WRITE_FAULT = 0x43,
192 DRM_PANFROST_EXCEPTION_JOB_AFFINITY_FAULT = 0x44,
193 DRM_PANFROST_EXCEPTION_JOB_BUS_FAULT = 0x48,
194 DRM_PANFROST_EXCEPTION_INSTR_INVALID_PC = 0x50,
195 DRM_PANFROST_EXCEPTION_INSTR_INVALID_ENC = 0x51,
196 DRM_PANFROST_EXCEPTION_INSTR_TYPE_MISMATCH = 0x52,
197 DRM_PANFROST_EXCEPTION_INSTR_OPERAND_FAULT = 0x53,
198 DRM_PANFROST_EXCEPTION_INSTR_TLS_FAULT = 0x54,
199 DRM_PANFROST_EXCEPTION_INSTR_BARRIER_FAULT = 0x55,
200 DRM_PANFROST_EXCEPTION_INSTR_ALIGN_FAULT = 0x56,
201 DRM_PANFROST_EXCEPTION_DATA_INVALID_FAULT = 0x58,
202 DRM_PANFROST_EXCEPTION_TILE_RANGE_FAULT = 0x59,
203 DRM_PANFROST_EXCEPTION_ADDR_RANGE_FAULT = 0x5a,
204 DRM_PANFROST_EXCEPTION_IMPRECISE_FAULT = 0x5b,
205 DRM_PANFROST_EXCEPTION_OOM = 0x60,
206 DRM_PANFROST_EXCEPTION_OOM_AFBC = 0x61,
207 DRM_PANFROST_EXCEPTION_UNKNOWN = 0x7f,
208 DRM_PANFROST_EXCEPTION_DELAYED_BUS_FAULT = 0x80,
209 DRM_PANFROST_EXCEPTION_GPU_SHAREABILITY_FAULT = 0x88,
210 DRM_PANFROST_EXCEPTION_SYS_SHAREABILITY_FAULT = 0x89,
211 DRM_PANFROST_EXCEPTION_GPU_CACHEABILITY_FAULT = 0x8a,
212 DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_0 = 0xc0,
213 DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_1 = 0xc1,
214 DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_2 = 0xc2,
215 DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_3 = 0xc3,
216 DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_4 = 0xc4,
217 DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_IDENTITY = 0xc7,
218 DRM_PANFROST_EXCEPTION_PERM_FAULT_0 = 0xc8,
219 DRM_PANFROST_EXCEPTION_PERM_FAULT_1 = 0xc9,
220 DRM_PANFROST_EXCEPTION_PERM_FAULT_2 = 0xca,
221 DRM_PANFROST_EXCEPTION_PERM_FAULT_3 = 0xcb,
222 DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_0 = 0xd0,
223 DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_1 = 0xd1,
224 DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_2 = 0xd2,
225 DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_3 = 0xd3,
226 DRM_PANFROST_EXCEPTION_ACCESS_FLAG_0 = 0xd8,
227 DRM_PANFROST_EXCEPTION_ACCESS_FLAG_1 = 0xd9,
228 DRM_PANFROST_EXCEPTION_ACCESS_FLAG_2 = 0xda,
229 DRM_PANFROST_EXCEPTION_ACCESS_FLAG_3 = 0xdb,
230 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN0 = 0xe0,
231 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN1 = 0xe1,
232 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN2 = 0xe2,
233 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN3 = 0xe3,
234 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT0 = 0xe4,
235 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT1 = 0xe5,
236 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT2 = 0xe6,
237 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT3 = 0xe7,
238 DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_0 = 0xe8,
239 DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_1 = 0xe9,
240 DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_2 = 0xea,
241 DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_3 = 0xeb,
242 DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_0 = 0xec,
243 DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_1 = 0xed,
244 DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_2 = 0xee,
245 DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_3 = 0xef,
246 };
247
248 static inline bool
panfrost_exception_is_fault(u32 exception_code)249 panfrost_exception_is_fault(u32 exception_code)
250 {
251 return exception_code > DRM_PANFROST_EXCEPTION_MAX_NON_FAULT;
252 }
253
254 const char *panfrost_exception_name(u32 exception_code);
255 bool panfrost_exception_needs_reset(const struct panfrost_device *pfdev,
256 u32 exception_code);
257
258 static inline void
panfrost_device_schedule_reset(struct panfrost_device * pfdev)259 panfrost_device_schedule_reset(struct panfrost_device *pfdev)
260 {
261 atomic_set(&pfdev->reset.pending, 1);
262 queue_work(pfdev->reset.wq, &pfdev->reset.work);
263 }
264
265 #endif
266