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 afbc_features; 49 u32 texture_features[4]; 50 u32 js_features[16]; 51 52 u32 nr_core_groups; 53 u32 thread_tls_alloc; 54 55 unsigned long hw_features[64 / BITS_PER_LONG]; 56 unsigned long hw_issues[64 / BITS_PER_LONG]; 57 }; 58 59 /* 60 * Features that cannot be automatically detected and need matching using the 61 * compatible string, typically SoC-specific. 62 */ 63 struct panfrost_compatible { 64 /* Supplies count and names. */ 65 int num_supplies; 66 const char * const *supply_names; 67 /* 68 * Number of power domains required, note that values 0 and 1 are 69 * handled identically, as only values > 1 need special handling. 70 */ 71 int num_pm_domains; 72 /* Only required if num_pm_domains > 1. */ 73 const char * const *pm_domain_names; 74 75 /* Vendor implementation quirks callback */ 76 void (*vendor_quirk)(struct panfrost_device *pfdev); 77 }; 78 79 struct panfrost_device { 80 struct device *dev; 81 struct drm_device *ddev; 82 struct platform_device *pdev; 83 84 void __iomem *iomem; 85 struct clk *clock; 86 struct clk *bus_clock; 87 struct regulator_bulk_data *regulators; 88 struct reset_control *rstc; 89 /* pm_domains for devices with more than one. */ 90 struct device *pm_domain_devs[MAX_PM_DOMAINS]; 91 struct device_link *pm_domain_links[MAX_PM_DOMAINS]; 92 bool coherent; 93 94 struct panfrost_features features; 95 const struct panfrost_compatible *comp; 96 97 spinlock_t as_lock; 98 unsigned long as_in_use_mask; 99 unsigned long as_alloc_mask; 100 struct list_head as_lru_list; 101 102 struct panfrost_job_slot *js; 103 104 struct panfrost_job *jobs[NUM_JOB_SLOTS]; 105 struct list_head scheduled_jobs; 106 107 struct panfrost_perfcnt *perfcnt; 108 109 struct mutex sched_lock; 110 111 struct { 112 struct work_struct work; 113 atomic_t pending; 114 } reset; 115 116 struct mutex shrinker_lock; 117 struct list_head shrinker_list; 118 struct shrinker shrinker; 119 120 struct panfrost_devfreq pfdevfreq; 121 }; 122 123 struct panfrost_mmu { 124 struct io_pgtable_cfg pgtbl_cfg; 125 struct io_pgtable_ops *pgtbl_ops; 126 int as; 127 atomic_t as_count; 128 struct list_head list; 129 }; 130 131 struct panfrost_file_priv { 132 struct panfrost_device *pfdev; 133 134 struct drm_sched_entity sched_entity[NUM_JOB_SLOTS]; 135 136 struct panfrost_mmu mmu; 137 struct drm_mm mm; 138 spinlock_t mm_lock; 139 }; 140 141 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev) 142 { 143 return ddev->dev_private; 144 } 145 146 static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id) 147 { 148 s32 match_id = pfdev->features.id; 149 150 if (match_id & 0xf000) 151 match_id &= 0xf00f; 152 return match_id - id; 153 } 154 155 static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev) 156 { 157 return panfrost_model_cmp(pfdev, 0x1000) >= 0; 158 } 159 160 static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id) 161 { 162 return !panfrost_model_cmp(pfdev, id); 163 } 164 165 int panfrost_unstable_ioctl_check(void); 166 167 int panfrost_device_init(struct panfrost_device *pfdev); 168 void panfrost_device_fini(struct panfrost_device *pfdev); 169 void panfrost_device_reset(struct panfrost_device *pfdev); 170 171 int panfrost_device_resume(struct device *dev); 172 int panfrost_device_suspend(struct device *dev); 173 174 const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code); 175 176 #endif 177