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> */
5 #ifndef __PANFROST_DEVICE_H__
6 #define __PANFROST_DEVICE_H__
8 #include <linux/spinlock.h>
9 #include <drm/drm_device.h>
10 #include <drm/drm_mm.h>
11 #include <drm/gpu_scheduler.h>
13 struct panfrost_device;
15 struct panfrost_job_slot;
17 struct panfrost_perfcnt;
19 #define NUM_JOB_SLOTS 3
21 struct panfrost_features {
39 u32 thread_max_workgroup_sz;
40 u32 thread_max_barrier_sz;
41 u32 coherency_features;
42 u32 texture_features[4];
47 unsigned long hw_features[64 / BITS_PER_LONG];
48 unsigned long hw_issues[64 / BITS_PER_LONG];
51 struct panfrost_devfreq_slot {
54 ktime_t time_last_update;
58 struct panfrost_device {
60 struct drm_device *ddev;
61 struct platform_device *pdev;
63 spinlock_t hwaccess_lock;
70 struct clk *bus_clock;
71 struct regulator *regulator;
72 struct reset_control *rstc;
74 struct panfrost_features features;
76 struct panfrost_mmu *mmu;
77 struct panfrost_job_slot *js;
79 struct panfrost_job *jobs[NUM_JOB_SLOTS];
80 struct list_head scheduled_jobs;
82 struct panfrost_perfcnt *perfcnt;
84 struct mutex sched_lock;
85 struct mutex reset_lock;
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];
96 struct panfrost_file_priv {
97 struct panfrost_device *pfdev;
99 struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
102 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
104 return ddev->dev_private;
107 static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
109 s32 match_id = pfdev->features.id;
111 if (match_id & 0xf000)
113 return match_id - id;
116 static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev)
118 return panfrost_model_cmp(pfdev, 0x1000) >= 0;
121 static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
123 return !panfrost_model_cmp(pfdev, id);
126 int panfrost_unstable_ioctl_check(void);
128 int panfrost_device_init(struct panfrost_device *pfdev);
129 void panfrost_device_fini(struct panfrost_device *pfdev);
131 int panfrost_device_resume(struct device *dev);
132 int panfrost_device_suspend(struct device *dev);
134 const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code);