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/atomic.h>
9 #include <linux/io-pgtable.h>
10 #include <linux/spinlock.h>
11 #include <drm/drm_device.h>
12 #include <drm/drm_mm.h>
13 #include <drm/gpu_scheduler.h>
15 struct panfrost_device;
17 struct panfrost_job_slot;
19 struct panfrost_perfcnt;
21 #define NUM_JOB_SLOTS 3
23 struct panfrost_features {
41 u32 thread_max_workgroup_sz;
42 u32 thread_max_barrier_sz;
43 u32 coherency_features;
44 u32 texture_features[4];
50 unsigned long hw_features[64 / BITS_PER_LONG];
51 unsigned long hw_issues[64 / BITS_PER_LONG];
54 struct panfrost_devfreq_slot {
57 ktime_t time_last_update;
61 struct panfrost_device {
63 struct drm_device *ddev;
64 struct platform_device *pdev;
68 struct clk *bus_clock;
69 struct regulator *regulator;
70 struct reset_control *rstc;
72 struct panfrost_features features;
75 unsigned long as_in_use_mask;
76 unsigned long as_alloc_mask;
77 struct list_head as_lru_list;
79 struct panfrost_job_slot *js;
81 struct panfrost_job *jobs[NUM_JOB_SLOTS];
82 struct list_head scheduled_jobs;
84 struct panfrost_perfcnt *perfcnt;
86 struct mutex sched_lock;
87 struct mutex reset_lock;
89 struct mutex shrinker_lock;
90 struct list_head shrinker_list;
91 struct shrinker shrinker;
94 struct devfreq *devfreq;
95 struct thermal_cooling_device *cooling;
96 unsigned long cur_freq;
97 unsigned long cur_volt;
98 struct panfrost_devfreq_slot slot[NUM_JOB_SLOTS];
102 struct panfrost_mmu {
103 struct io_pgtable_cfg pgtbl_cfg;
104 struct io_pgtable_ops *pgtbl_ops;
107 struct list_head list;
110 struct panfrost_file_priv {
111 struct panfrost_device *pfdev;
113 struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
115 struct panfrost_mmu mmu;
120 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
122 return ddev->dev_private;
125 static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
127 s32 match_id = pfdev->features.id;
129 if (match_id & 0xf000)
131 return match_id - id;
134 static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev)
136 return panfrost_model_cmp(pfdev, 0x1000) >= 0;
139 static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
141 return !panfrost_model_cmp(pfdev, id);
144 int panfrost_unstable_ioctl_check(void);
146 int panfrost_device_init(struct panfrost_device *pfdev);
147 void panfrost_device_fini(struct panfrost_device *pfdev);
148 void panfrost_device_reset(struct panfrost_device *pfdev);
150 int panfrost_device_resume(struct device *dev);
151 int panfrost_device_suspend(struct device *dev);
153 const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code);