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 	u32 thread_tls_alloc;
47 
48 	unsigned long hw_features[64 / BITS_PER_LONG];
49 	unsigned long hw_issues[64 / BITS_PER_LONG];
50 };
51 
52 struct panfrost_devfreq_slot {
53 	ktime_t busy_time;
54 	ktime_t idle_time;
55 	ktime_t time_last_update;
56 	bool busy;
57 };
58 
59 struct panfrost_device {
60 	struct device *dev;
61 	struct drm_device *ddev;
62 	struct platform_device *pdev;
63 
64 	spinlock_t hwaccess_lock;
65 
66 	struct drm_mm mm;
67 	spinlock_t mm_lock;
68 
69 	void __iomem *iomem;
70 	struct clk *clock;
71 	struct clk *bus_clock;
72 	struct regulator *regulator;
73 	struct reset_control *rstc;
74 
75 	struct panfrost_features features;
76 
77 	struct panfrost_mmu *mmu;
78 	struct panfrost_job_slot *js;
79 
80 	struct panfrost_job *jobs[NUM_JOB_SLOTS];
81 	struct list_head scheduled_jobs;
82 
83 	struct panfrost_perfcnt *perfcnt;
84 
85 	struct mutex sched_lock;
86 	struct mutex reset_lock;
87 
88 	struct {
89 		struct devfreq *devfreq;
90 		struct thermal_cooling_device *cooling;
91 		unsigned long cur_freq;
92 		unsigned long cur_volt;
93 		struct panfrost_devfreq_slot slot[NUM_JOB_SLOTS];
94 	} devfreq;
95 };
96 
97 struct panfrost_file_priv {
98 	struct panfrost_device *pfdev;
99 
100 	struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
101 };
102 
103 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
104 {
105 	return ddev->dev_private;
106 }
107 
108 static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
109 {
110 	s32 match_id = pfdev->features.id;
111 
112 	if (match_id & 0xf000)
113 		match_id &= 0xf00f;
114 	return match_id - id;
115 }
116 
117 static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev)
118 {
119 	return panfrost_model_cmp(pfdev, 0x1000) >= 0;
120 }
121 
122 static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
123 {
124 	return !panfrost_model_cmp(pfdev, id);
125 }
126 
127 int panfrost_unstable_ioctl_check(void);
128 
129 int panfrost_device_init(struct panfrost_device *pfdev);
130 void panfrost_device_fini(struct panfrost_device *pfdev);
131 
132 int panfrost_device_resume(struct device *dev);
133 int panfrost_device_suspend(struct device *dev);
134 
135 const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code);
136 
137 #endif
138