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 struct panfrost_perfcnt;
18 
19 #define NUM_JOB_SLOTS 3
20 
21 struct panfrost_features {
22 	u16 id;
23 	u16 revision;
24 
25 	u64 shader_present;
26 	u64 tiler_present;
27 	u64 l2_present;
28 	u64 stack_present;
29 	u32 as_present;
30 	u32 js_present;
31 
32 	u32 l2_features;
33 	u32 core_features;
34 	u32 tiler_features;
35 	u32 mem_features;
36 	u32 mmu_features;
37 	u32 thread_features;
38 	u32 max_threads;
39 	u32 thread_max_workgroup_sz;
40 	u32 thread_max_barrier_sz;
41 	u32 coherency_features;
42 	u32 texture_features[4];
43 	u32 js_features[16];
44 
45 	u32 nr_core_groups;
46 
47 	unsigned long hw_features[64 / BITS_PER_LONG];
48 	unsigned long hw_issues[64 / BITS_PER_LONG];
49 };
50 
51 struct panfrost_devfreq_slot {
52 	ktime_t busy_time;
53 	ktime_t idle_time;
54 	ktime_t time_last_update;
55 	bool busy;
56 };
57 
58 struct panfrost_device {
59 	struct device *dev;
60 	struct drm_device *ddev;
61 	struct platform_device *pdev;
62 
63 	spinlock_t hwaccess_lock;
64 
65 	struct drm_mm mm;
66 	spinlock_t mm_lock;
67 
68 	void __iomem *iomem;
69 	struct clk *clock;
70 	struct clk *bus_clock;
71 	struct regulator *regulator;
72 	struct reset_control *rstc;
73 
74 	struct panfrost_features features;
75 
76 	struct panfrost_mmu *mmu;
77 	struct panfrost_job_slot *js;
78 
79 	struct panfrost_job *jobs[NUM_JOB_SLOTS];
80 	struct list_head scheduled_jobs;
81 
82 	struct panfrost_perfcnt *perfcnt;
83 
84 	struct mutex sched_lock;
85 	struct mutex reset_lock;
86 
87 	struct {
88 		struct devfreq *devfreq;
89 		struct thermal_cooling_device *cooling;
90 		unsigned long cur_freq;
91 		unsigned long cur_volt;
92 		struct panfrost_devfreq_slot slot[NUM_JOB_SLOTS];
93 	} devfreq;
94 };
95 
96 struct panfrost_file_priv {
97 	struct panfrost_device *pfdev;
98 
99 	struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
100 };
101 
102 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
103 {
104 	return ddev->dev_private;
105 }
106 
107 static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
108 {
109 	s32 match_id = pfdev->features.id;
110 
111 	if (match_id & 0xf000)
112 		match_id &= 0xf00f;
113 	return match_id - id;
114 }
115 
116 static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev)
117 {
118 	return panfrost_model_cmp(pfdev, 0x1000) >= 0;
119 }
120 
121 static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
122 {
123 	return !panfrost_model_cmp(pfdev, id);
124 }
125 
126 int panfrost_unstable_ioctl_check(void);
127 
128 int panfrost_device_init(struct panfrost_device *pfdev);
129 void panfrost_device_fini(struct panfrost_device *pfdev);
130 
131 int panfrost_device_resume(struct device *dev);
132 int panfrost_device_suspend(struct device *dev);
133 
134 const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code);
135 
136 #endif
137