1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Copyright (C) 2015-2018 Etnaviv Project
4  */
5 
6 #ifndef __ETNAVIV_GPU_H__
7 #define __ETNAVIV_GPU_H__
8 
9 #include "etnaviv_cmdbuf.h"
10 #include "etnaviv_gem.h"
11 #include "etnaviv_mmu.h"
12 #include "etnaviv_drv.h"
13 
14 struct etnaviv_gem_submit;
15 struct etnaviv_vram_mapping;
16 
17 struct etnaviv_chip_identity {
18 	u32 model;
19 	u32 revision;
20 	u32 product_id;
21 	u32 customer_id;
22 	u32 eco_id;
23 
24 	/* Supported feature fields. */
25 	u32 features;
26 
27 	/* Supported minor feature fields. */
28 	u32 minor_features0;
29 	u32 minor_features1;
30 	u32 minor_features2;
31 	u32 minor_features3;
32 	u32 minor_features4;
33 	u32 minor_features5;
34 	u32 minor_features6;
35 	u32 minor_features7;
36 	u32 minor_features8;
37 	u32 minor_features9;
38 	u32 minor_features10;
39 	u32 minor_features11;
40 
41 	/* Number of streams supported. */
42 	u32 stream_count;
43 
44 	/* Total number of temporary registers per thread. */
45 	u32 register_max;
46 
47 	/* Maximum number of threads. */
48 	u32 thread_count;
49 
50 	/* Number of shader cores. */
51 	u32 shader_core_count;
52 
53 	/* Size of the vertex cache. */
54 	u32 vertex_cache_size;
55 
56 	/* Number of entries in the vertex output buffer. */
57 	u32 vertex_output_buffer_size;
58 
59 	/* Number of pixel pipes. */
60 	u32 pixel_pipes;
61 
62 	/* Number of instructions. */
63 	u32 instruction_count;
64 
65 	/* Number of constants. */
66 	u32 num_constants;
67 
68 	/* Buffer size */
69 	u32 buffer_size;
70 
71 	/* Number of varyings */
72 	u8 varyings_count;
73 };
74 
75 enum etnaviv_sec_mode {
76 	ETNA_SEC_NONE = 0,
77 	ETNA_SEC_KERNEL,
78 	ETNA_SEC_TZ
79 };
80 
81 struct etnaviv_event {
82 	struct dma_fence *fence;
83 	struct etnaviv_gem_submit *submit;
84 
85 	void (*sync_point)(struct etnaviv_gpu *gpu, struct etnaviv_event *event);
86 };
87 
88 struct etnaviv_cmdbuf_suballoc;
89 struct regulator;
90 struct clk;
91 
92 #define ETNA_NR_EVENTS 30
93 
94 struct etnaviv_gpu {
95 	struct drm_device *drm;
96 	struct thermal_cooling_device *cooling;
97 	struct device *dev;
98 	struct mutex lock;
99 	struct etnaviv_chip_identity identity;
100 	enum etnaviv_sec_mode sec_mode;
101 	struct workqueue_struct *wq;
102 	struct drm_gpu_scheduler sched;
103 	bool initialized;
104 	bool fe_running;
105 
106 	/* 'ring'-buffer: */
107 	struct etnaviv_cmdbuf buffer;
108 	int exec_state;
109 
110 	/* event management: */
111 	DECLARE_BITMAP(event_bitmap, ETNA_NR_EVENTS);
112 	struct etnaviv_event event[ETNA_NR_EVENTS];
113 	struct completion event_free;
114 	spinlock_t event_spinlock;
115 
116 	u32 idle_mask;
117 
118 	/* Fencing support */
119 	struct mutex fence_lock;
120 	struct idr fence_idr;
121 	u32 next_fence;
122 	u32 completed_fence;
123 	wait_queue_head_t fence_event;
124 	u64 fence_context;
125 	spinlock_t fence_spinlock;
126 
127 	/* worker for handling 'sync' points: */
128 	struct work_struct sync_point_work;
129 	int sync_point_event;
130 
131 	/* hang detection */
132 	u32 hangcheck_dma_addr;
133 
134 	void __iomem *mmio;
135 	int irq;
136 
137 	struct etnaviv_iommu_context *mmu_context;
138 	unsigned int flush_seq;
139 
140 	/* Power Control: */
141 	struct clk *clk_bus;
142 	struct clk *clk_reg;
143 	struct clk *clk_core;
144 	struct clk *clk_shader;
145 
146 	unsigned int freq_scale;
147 	unsigned long base_rate_core;
148 	unsigned long base_rate_shader;
149 };
150 
151 static inline void gpu_write(struct etnaviv_gpu *gpu, u32 reg, u32 data)
152 {
153 	writel(data, gpu->mmio + reg);
154 }
155 
156 static inline u32 gpu_read(struct etnaviv_gpu *gpu, u32 reg)
157 {
158 	return readl(gpu->mmio + reg);
159 }
160 
161 int etnaviv_gpu_get_param(struct etnaviv_gpu *gpu, u32 param, u64 *value);
162 
163 int etnaviv_gpu_init(struct etnaviv_gpu *gpu);
164 bool etnaviv_fill_identity_from_hwdb(struct etnaviv_gpu *gpu);
165 
166 #ifdef CONFIG_DEBUG_FS
167 int etnaviv_gpu_debugfs(struct etnaviv_gpu *gpu, struct seq_file *m);
168 #endif
169 
170 void etnaviv_gpu_recover_hang(struct etnaviv_gpu *gpu);
171 void etnaviv_gpu_retire(struct etnaviv_gpu *gpu);
172 int etnaviv_gpu_wait_fence_interruptible(struct etnaviv_gpu *gpu,
173 	u32 fence, struct drm_etnaviv_timespec *timeout);
174 int etnaviv_gpu_wait_obj_inactive(struct etnaviv_gpu *gpu,
175 	struct etnaviv_gem_object *etnaviv_obj,
176 	struct drm_etnaviv_timespec *timeout);
177 struct dma_fence *etnaviv_gpu_submit(struct etnaviv_gem_submit *submit);
178 int etnaviv_gpu_pm_get_sync(struct etnaviv_gpu *gpu);
179 void etnaviv_gpu_pm_put(struct etnaviv_gpu *gpu);
180 int etnaviv_gpu_wait_idle(struct etnaviv_gpu *gpu, unsigned int timeout_ms);
181 void etnaviv_gpu_start_fe(struct etnaviv_gpu *gpu, u32 address, u16 prefetch);
182 
183 extern struct platform_driver etnaviv_gpu_driver;
184 
185 #endif /* __ETNAVIV_GPU_H__ */
186