tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
13struct panfrost_device;
14struct panfrost_mmu;
15struct panfrost_job_slot;
16struct panfrost_job;
17struct panfrost_perfcnt;
18
19#define NUM_JOB_SLOTS 3
20
21struct 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
51struct panfrost_devfreq_slot {
52 ktime_t busy_time;
53 ktime_t idle_time;
54 ktime_t time_last_update;
55 bool busy;
56};
57
58struct 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
96struct panfrost_file_priv {
97 struct panfrost_device *pfdev;
98
99 struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
100};
101
102static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
103{
104 return ddev->dev_private;
105}
106
107static 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
116static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev)
117{
118 return panfrost_model_cmp(pfdev, 0x1000) >= 0;
119}
120
121static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
122{
123 return !panfrost_model_cmp(pfdev, id);
124}
125
126int panfrost_unstable_ioctl_check(void);
127
128int panfrost_device_init(struct panfrost_device *pfdev);
129void panfrost_device_fini(struct panfrost_device *pfdev);
130
131int panfrost_device_resume(struct device *dev);
132int panfrost_device_suspend(struct device *dev);
133
134const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code);
135
136#endif