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/spinlock.h>
9 #include <drm/drm_device.h>
10 #include <drm/drm_mm.h>
11 #include <drm/gpu_scheduler.h>
12 
13 struct panfrost_device;
14 struct panfrost_mmu;
15 struct panfrost_job_slot;
16 struct panfrost_job;
17 
18 #define NUM_JOB_SLOTS 3
19 
20 struct panfrost_features {
21 	u16 id;
22 	u16 revision;
23 
24 	u64 shader_present;
25 	u64 tiler_present;
26 	u64 l2_present;
27 	u64 stack_present;
28 	u32 as_present;
29 	u32 js_present;
30 
31 	u32 l2_features;
32 	u32 core_features;
33 	u32 tiler_features;
34 	u32 mem_features;
35 	u32 mmu_features;
36 	u32 thread_features;
37 	u32 max_threads;
38 	u32 thread_max_workgroup_sz;
39 	u32 thread_max_barrier_sz;
40 	u32 coherency_features;
41 	u32 texture_features[4];
42 	u32 js_features[16];
43 
44 	u32 nr_core_groups;
45 
46 	unsigned long hw_features[64 / BITS_PER_LONG];
47 	unsigned long hw_issues[64 / BITS_PER_LONG];
48 };
49 
50 struct panfrost_devfreq_slot {
51 	ktime_t busy_time;
52 	ktime_t idle_time;
53 	ktime_t time_last_update;
54 	bool busy;
55 };
56 
57 struct panfrost_device {
58 	struct device *dev;
59 	struct drm_device *ddev;
60 	struct platform_device *pdev;
61 
62 	spinlock_t hwaccess_lock;
63 
64 	struct drm_mm mm;
65 	spinlock_t mm_lock;
66 
67 	void __iomem *iomem;
68 	struct clk *clock;
69 	struct regulator *regulator;
70 	struct reset_control *rstc;
71 
72 	struct panfrost_features features;
73 
74 	struct panfrost_mmu *mmu;
75 	struct panfrost_job_slot *js;
76 
77 	struct panfrost_job *jobs[NUM_JOB_SLOTS];
78 	struct list_head scheduled_jobs;
79 
80 	struct mutex sched_lock;
81 	struct mutex reset_lock;
82 
83 	struct {
84 		struct devfreq *devfreq;
85 		struct thermal_cooling_device *cooling;
86 		unsigned long cur_freq;
87 		unsigned long cur_volt;
88 		struct panfrost_devfreq_slot slot[NUM_JOB_SLOTS];
89 	} devfreq;
90 };
91 
92 struct panfrost_file_priv {
93 	struct panfrost_device *pfdev;
94 
95 	struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
96 };
97 
98 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
99 {
100 	return ddev->dev_private;
101 }
102 
103 static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
104 {
105 	s32 match_id = pfdev->features.id;
106 
107 	if (match_id & 0xf000)
108 		match_id &= 0xf00f;
109 	return match_id - id;
110 }
111 
112 static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
113 {
114 	return !panfrost_model_cmp(pfdev, id);
115 }
116 
117 int panfrost_device_init(struct panfrost_device *pfdev);
118 void panfrost_device_fini(struct panfrost_device *pfdev);
119 
120 int panfrost_device_resume(struct device *dev);
121 int panfrost_device_suspend(struct device *dev);
122 
123 const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code);
124 
125 #endif
126