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/regulator/consumer.h> 11 #include <linux/spinlock.h> 12 #include <drm/drm_device.h> 13 #include <drm/drm_mm.h> 14 #include <drm/gpu_scheduler.h> 15 16 #include "panfrost_devfreq.h" 17 18 struct panfrost_device; 19 struct panfrost_mmu; 20 struct panfrost_job_slot; 21 struct panfrost_job; 22 struct panfrost_perfcnt; 23 24 #define NUM_JOB_SLOTS 3 25 #define MAX_PM_DOMAINS 3 26 27 struct panfrost_features { 28 u16 id; 29 u16 revision; 30 31 u64 shader_present; 32 u64 tiler_present; 33 u64 l2_present; 34 u64 stack_present; 35 u32 as_present; 36 u32 js_present; 37 38 u32 l2_features; 39 u32 core_features; 40 u32 tiler_features; 41 u32 mem_features; 42 u32 mmu_features; 43 u32 thread_features; 44 u32 max_threads; 45 u32 thread_max_workgroup_sz; 46 u32 thread_max_barrier_sz; 47 u32 coherency_features; 48 u32 texture_features[4]; 49 u32 js_features[16]; 50 51 u32 nr_core_groups; 52 u32 thread_tls_alloc; 53 54 unsigned long hw_features[64 / BITS_PER_LONG]; 55 unsigned long hw_issues[64 / BITS_PER_LONG]; 56 }; 57 58 /* 59 * Features that cannot be automatically detected and need matching using the 60 * compatible string, typically SoC-specific. 61 */ 62 struct panfrost_compatible { 63 /* Supplies count and names. */ 64 int num_supplies; 65 const char * const *supply_names; 66 /* 67 * Number of power domains required, note that values 0 and 1 are 68 * handled identically, as only values > 1 need special handling. 69 */ 70 int num_pm_domains; 71 /* Only required if num_pm_domains > 1. */ 72 const char * const *pm_domain_names; 73 }; 74 75 struct panfrost_device { 76 struct device *dev; 77 struct drm_device *ddev; 78 struct platform_device *pdev; 79 80 void __iomem *iomem; 81 struct clk *clock; 82 struct clk *bus_clock; 83 struct regulator_bulk_data *regulators; 84 struct reset_control *rstc; 85 /* pm_domains for devices with more than one. */ 86 struct device *pm_domain_devs[MAX_PM_DOMAINS]; 87 struct device_link *pm_domain_links[MAX_PM_DOMAINS]; 88 89 struct panfrost_features features; 90 const struct panfrost_compatible *comp; 91 92 spinlock_t as_lock; 93 unsigned long as_in_use_mask; 94 unsigned long as_alloc_mask; 95 struct list_head as_lru_list; 96 97 struct panfrost_job_slot *js; 98 99 struct panfrost_job *jobs[NUM_JOB_SLOTS]; 100 struct list_head scheduled_jobs; 101 102 struct panfrost_perfcnt *perfcnt; 103 104 struct mutex sched_lock; 105 struct mutex reset_lock; 106 107 struct mutex shrinker_lock; 108 struct list_head shrinker_list; 109 struct shrinker shrinker; 110 111 struct panfrost_devfreq pfdevfreq; 112 }; 113 114 struct panfrost_mmu { 115 struct io_pgtable_cfg pgtbl_cfg; 116 struct io_pgtable_ops *pgtbl_ops; 117 int as; 118 atomic_t as_count; 119 struct list_head list; 120 }; 121 122 struct panfrost_file_priv { 123 struct panfrost_device *pfdev; 124 125 struct drm_sched_entity sched_entity[NUM_JOB_SLOTS]; 126 127 struct panfrost_mmu mmu; 128 struct drm_mm mm; 129 spinlock_t mm_lock; 130 }; 131 132 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev) 133 { 134 return ddev->dev_private; 135 } 136 137 static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id) 138 { 139 s32 match_id = pfdev->features.id; 140 141 if (match_id & 0xf000) 142 match_id &= 0xf00f; 143 return match_id - id; 144 } 145 146 static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev) 147 { 148 return panfrost_model_cmp(pfdev, 0x1000) >= 0; 149 } 150 151 static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id) 152 { 153 return !panfrost_model_cmp(pfdev, id); 154 } 155 156 int panfrost_unstable_ioctl_check(void); 157 158 int panfrost_device_init(struct panfrost_device *pfdev); 159 void panfrost_device_fini(struct panfrost_device *pfdev); 160 void panfrost_device_reset(struct panfrost_device *pfdev); 161 162 int panfrost_device_resume(struct device *dev); 163 int panfrost_device_suspend(struct device *dev); 164 165 const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code); 166 167 #endif 168