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 /* Vendor implementation quirks callback */ 75 void (*vendor_quirk)(struct panfrost_device *pfdev); 76 }; 77 78 struct panfrost_device { 79 struct device *dev; 80 struct drm_device *ddev; 81 struct platform_device *pdev; 82 83 void __iomem *iomem; 84 struct clk *clock; 85 struct clk *bus_clock; 86 struct regulator_bulk_data *regulators; 87 struct reset_control *rstc; 88 /* pm_domains for devices with more than one. */ 89 struct device *pm_domain_devs[MAX_PM_DOMAINS]; 90 struct device_link *pm_domain_links[MAX_PM_DOMAINS]; 91 92 struct panfrost_features features; 93 const struct panfrost_compatible *comp; 94 95 spinlock_t as_lock; 96 unsigned long as_in_use_mask; 97 unsigned long as_alloc_mask; 98 struct list_head as_lru_list; 99 100 struct panfrost_job_slot *js; 101 102 struct panfrost_job *jobs[NUM_JOB_SLOTS]; 103 struct list_head scheduled_jobs; 104 105 struct panfrost_perfcnt *perfcnt; 106 107 struct mutex sched_lock; 108 struct mutex reset_lock; 109 110 struct mutex shrinker_lock; 111 struct list_head shrinker_list; 112 struct shrinker shrinker; 113 114 struct panfrost_devfreq pfdevfreq; 115 }; 116 117 struct panfrost_mmu { 118 struct io_pgtable_cfg pgtbl_cfg; 119 struct io_pgtable_ops *pgtbl_ops; 120 int as; 121 atomic_t as_count; 122 struct list_head list; 123 }; 124 125 struct panfrost_file_priv { 126 struct panfrost_device *pfdev; 127 128 struct drm_sched_entity sched_entity[NUM_JOB_SLOTS]; 129 130 struct panfrost_mmu mmu; 131 struct drm_mm mm; 132 spinlock_t mm_lock; 133 }; 134 135 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev) 136 { 137 return ddev->dev_private; 138 } 139 140 static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id) 141 { 142 s32 match_id = pfdev->features.id; 143 144 if (match_id & 0xf000) 145 match_id &= 0xf00f; 146 return match_id - id; 147 } 148 149 static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev) 150 { 151 return panfrost_model_cmp(pfdev, 0x1000) >= 0; 152 } 153 154 static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id) 155 { 156 return !panfrost_model_cmp(pfdev, id); 157 } 158 159 int panfrost_unstable_ioctl_check(void); 160 161 int panfrost_device_init(struct panfrost_device *pfdev); 162 void panfrost_device_fini(struct panfrost_device *pfdev); 163 void panfrost_device_reset(struct panfrost_device *pfdev); 164 165 int panfrost_device_resume(struct device *dev); 166 int panfrost_device_suspend(struct device *dev); 167 168 const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code); 169 170 #endif 171