LXR linux/drivers/gpu/drm/panfrost/panfrost

   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;
  17
  18#define NUM_JOB_SLOTS 3
  19
  20struct 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
  50struct panfrost_devfreq_slot {
  51        ktime_t busy_time;
  52        ktime_t idle_time;
  53        ktime_t time_last_update;
  54        bool busy;
  55};
  56
  57struct 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 regulator *regulator;
  70        struct reset_control *rstc;
  71
  72        struct panfrost_features features;
  73
  74        struct panfrost_mmu *mmu;
  75        struct panfrost_job_slot *js;
  76
  77        struct panfrost_job *jobs[NUM_JOB_SLOTS];
  78        struct list_head scheduled_jobs;
  79
  80        struct mutex sched_lock;
  81        struct mutex reset_lock;
  82
  83        struct {
  84                struct devfreq *devfreq;
  85                struct thermal_cooling_device *cooling;
  86                unsigned long cur_freq;
  87                unsigned long cur_volt;
  88                struct panfrost_devfreq_slot slot[NUM_JOB_SLOTS];
  89        } devfreq;
  90};
  91
  92struct panfrost_file_priv {
  93        struct panfrost_device *pfdev;
  94
  95        struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
  96};
  97
  98static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
  99{
 100        return ddev->dev_private;
 101}
 102
 103static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
 104{
 105        s32 match_id = pfdev->features.id;
 106
 107        if (match_id & 0xf000)
 108                match_id &= 0xf00f;
 109        return match_id - id;
 110}
 111
 112static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
 113{
 114        return !panfrost_model_cmp(pfdev, id);
 115}
 116
 117int panfrost_device_init(struct panfrost_device *pfdev);
 118void panfrost_device_fini(struct panfrost_device *pfdev);
 119
 120int panfrost_device_resume(struct device *dev);
 121int panfrost_device_suspend(struct device *dev);
 122
 123const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code);
 124
 125#endif
 126