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/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>
  14
  15 struct panfrost_device;
  16 struct panfrost_mmu;
  17 struct panfrost_job_slot;
  18 struct panfrost_job;
  19 struct panfrost_perfcnt;
  20
  21 #define NUM_JOB_SLOTS 3
  22
  23 struct panfrost_features {
  24         u16 id;
  25         u16 revision;
  26
  27         u64 shader_present;
  28         u64 tiler_present;
  29         u64 l2_present;
  30         u64 stack_present;
  31         u32 as_present;
  32         u32 js_present;
  33
  34         u32 l2_features;
  35         u32 core_features;
  36         u32 tiler_features;
  37         u32 mem_features;
  38         u32 mmu_features;
  39         u32 thread_features;
  40         u32 max_threads;
  41         u32 thread_max_workgroup_sz;
  42         u32 thread_max_barrier_sz;
  43         u32 coherency_features;
  44         u32 texture_features[4];
  45         u32 js_features[16];
  46
  47         u32 nr_core_groups;
  48         u32 thread_tls_alloc;
  49
  50         unsigned long hw_features[64 / BITS_PER_LONG];
  51         unsigned long hw_issues[64 / BITS_PER_LONG];
  52 };
  53
  54 struct panfrost_device {
  55         struct device *dev;
  56         struct drm_device *ddev;
  57         struct platform_device *pdev;
  58
  59         void __iomem *iomem;
  60         struct clk *clock;
  61         struct clk *bus_clock;
  62         struct regulator *regulator;
  63         struct reset_control *rstc;
  64
  65         struct panfrost_features features;
  66
  67         spinlock_t as_lock;
  68         unsigned long as_in_use_mask;
  69         unsigned long as_alloc_mask;
  70         struct list_head as_lru_list;
  71
  72         struct panfrost_job_slot *js;
  73
  74         struct panfrost_job *jobs[NUM_JOB_SLOTS];
  75         struct list_head scheduled_jobs;
  76
  77         struct panfrost_perfcnt *perfcnt;
  78
  79         struct mutex sched_lock;
  80         struct mutex reset_lock;
  81
  82         struct mutex shrinker_lock;
  83         struct list_head shrinker_list;
  84         struct shrinker shrinker;
  85
  86         struct {
  87                 struct devfreq *devfreq;
  88                 struct thermal_cooling_device *cooling;
  89                 ktime_t busy_time;
  90                 ktime_t idle_time;
  91                 ktime_t time_last_update;
  92                 atomic_t busy_count;
  93         } devfreq;
  94 };
  95
  96 struct panfrost_mmu {
  97         struct io_pgtable_cfg pgtbl_cfg;
  98         struct io_pgtable_ops *pgtbl_ops;
  99         int as;
 100         atomic_t as_count;
 101         struct list_head list;
 102 };
 103
 104 struct panfrost_file_priv {
 105         struct panfrost_device *pfdev;
 106
 107         struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
 108
 109         struct panfrost_mmu mmu;
 110         struct drm_mm mm;
 111         spinlock_t mm_lock;
 112 };
 113
 114 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
 115 {
 116         return ddev->dev_private;
 117 }
 118
 119 static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
 120 {
 121         s32 match_id = pfdev->features.id;
 122
 123         if (match_id & 0xf000)
 124                 match_id &= 0xf00f;
 125         return match_id - id;
 126 }
 127
 128 static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev)
 129 {
 130         return panfrost_model_cmp(pfdev, 0x1000) >= 0;
 131 }
 132
 133 static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
 134 {
 135         return !panfrost_model_cmp(pfdev, id);
 136 }
 137
 138 int panfrost_unstable_ioctl_check(void);
 139
 140 int panfrost_device_init(struct panfrost_device *pfdev);
 141 void panfrost_device_fini(struct panfrost_device *pfdev);
 142 void panfrost_device_reset(struct panfrost_device *pfdev);
 143
 144 int panfrost_device_resume(struct device *dev);
 145 int panfrost_device_suspend(struct device *dev);
 146
 147 const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code);
 148
 149 #endif