drivers/gpu/drm/panfrost/panfrost_device.h

   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
  18 #define NUM_JOB_SLOTS 3
  19
  20 struct panfrost_features {
  21         u16 id;
  22         u16 revision;
  23
  24         u64 shader_present;
  25         u64 tiler_present;
  26         u64 l2_present;
  27         u64 stack_present;
  28         u32 as_present;
  29         u32 js_present;
  30
  31         u32 l2_features;
  32         u32 core_features;
  33         u32 tiler_features;
  34         u32 mem_features;
  35         u32 mmu_features;
  36         u32 thread_features;
  37         u32 max_threads;
  38         u32 thread_max_workgroup_sz;
  39         u32 thread_max_barrier_sz;
  40         u32 coherency_features;
  41         u32 texture_features[4];
  42         u32 js_features[16];
  43
  44         u32 nr_core_groups;
  45
  46         unsigned long hw_features[64 / BITS_PER_LONG];
  47         unsigned long hw_issues[64 / BITS_PER_LONG];
  48 };
  49
  50 struct panfrost_devfreq_slot {
  51         ktime_t busy_time;
  52         ktime_t idle_time;
  53         ktime_t time_last_update;
  54         bool busy;
  55 };
  56
  57 struct panfrost_device {
  58         struct device *dev;
  59         struct drm_device *ddev;
  60         struct platform_device *pdev;
  61
  62         spinlock_t hwaccess_lock;
  63
  64         struct drm_mm mm;
  65         spinlock_t mm_lock;
  66
  67         void __iomem *iomem;
  68         struct clk *clock;
  69         struct clk *bus_clock;
  70         struct regulator *regulator;
  71         struct reset_control *rstc;
  72
  73         struct panfrost_features features;
  74
  75         struct panfrost_mmu *mmu;
  76         struct panfrost_job_slot *js;
  77
  78         struct panfrost_job *jobs[NUM_JOB_SLOTS];
  79         struct list_head scheduled_jobs;
  80
  81         struct mutex sched_lock;
  82         struct mutex reset_lock;
  83
  84         struct {
  85                 struct devfreq *devfreq;
  86                 struct thermal_cooling_device *cooling;
  87                 unsigned long cur_freq;
  88                 unsigned long cur_volt;
  89                 struct panfrost_devfreq_slot slot[NUM_JOB_SLOTS];
  90         } devfreq;
  91 };
  92
  93 struct panfrost_file_priv {
  94         struct panfrost_device *pfdev;
  95
  96         struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
  97 };
  98
  99 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
 100 {
 101         return ddev->dev_private;
 102 }
 103
 104 static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
 105 {
 106         s32 match_id = pfdev->features.id;
 107
 108         if (match_id & 0xf000)
 109                 match_id &= 0xf00f;
 110         return match_id - id;
 111 }
 112
 113 static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
 114 {
 115         return !panfrost_model_cmp(pfdev, id);
 116 }
 117
 118 int panfrost_unstable_ioctl_check(void);
 119
 120 int panfrost_device_init(struct panfrost_device *pfdev);
 121 void panfrost_device_fini(struct panfrost_device *pfdev);
 122
 123 int panfrost_device_resume(struct device *dev);
 124 int panfrost_device_suspend(struct device *dev);
 125
 126 const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code);
 127
 128 #endif