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_devfreq_slot { 55 ktime_t busy_time; 56 ktime_t idle_time; 57 ktime_t time_last_update; 58 bool busy; 59 }; 60 61 struct panfrost_device { 62 struct device *dev; 63 struct drm_device *ddev; 64 struct platform_device *pdev; 65 66 spinlock_t hwaccess_lock; 67 68 void __iomem *iomem; 69 struct clk *clock; 70 struct clk *bus_clock; 71 struct regulator *regulator; 72 struct reset_control *rstc; 73 74 struct panfrost_features features; 75 76 spinlock_t as_lock; 77 unsigned long as_in_use_mask; 78 unsigned long as_alloc_mask; 79 struct list_head as_lru_list; 80 81 struct panfrost_job_slot *js; 82 83 struct panfrost_job *jobs[NUM_JOB_SLOTS]; 84 struct list_head scheduled_jobs; 85 86 struct panfrost_perfcnt *perfcnt; 87 88 struct mutex sched_lock; 89 struct mutex reset_lock; 90 91 struct mutex shrinker_lock; 92 struct list_head shrinker_list; 93 struct shrinker shrinker; 94 95 struct { 96 struct devfreq *devfreq; 97 struct thermal_cooling_device *cooling; 98 unsigned long cur_freq; 99 unsigned long cur_volt; 100 struct panfrost_devfreq_slot slot[NUM_JOB_SLOTS]; 101 } devfreq; 102 }; 103 104 struct panfrost_mmu { 105 struct io_pgtable_cfg pgtbl_cfg; 106 struct io_pgtable_ops *pgtbl_ops; 107 struct mutex lock; 108 int as; 109 atomic_t as_count; 110 struct list_head list; 111 }; 112 113 struct panfrost_file_priv { 114 struct panfrost_device *pfdev; 115 116 struct drm_sched_entity sched_entity[NUM_JOB_SLOTS]; 117 118 struct panfrost_mmu mmu; 119 struct drm_mm mm; 120 spinlock_t mm_lock; 121 }; 122 123 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev) 124 { 125 return ddev->dev_private; 126 } 127 128 static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id) 129 { 130 s32 match_id = pfdev->features.id; 131 132 if (match_id & 0xf000) 133 match_id &= 0xf00f; 134 return match_id - id; 135 } 136 137 static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev) 138 { 139 return panfrost_model_cmp(pfdev, 0x1000) >= 0; 140 } 141 142 static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id) 143 { 144 return !panfrost_model_cmp(pfdev, id); 145 } 146 147 int panfrost_unstable_ioctl_check(void); 148 149 int panfrost_device_init(struct panfrost_device *pfdev); 150 void panfrost_device_fini(struct panfrost_device *pfdev); 151 void panfrost_device_reset(struct panfrost_device *pfdev); 152 153 int panfrost_device_resume(struct device *dev); 154 int panfrost_device_suspend(struct device *dev); 155 156 const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code); 157 158 #endif 159