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