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/pm.h> 11 #include <linux/regulator/consumer.h> 12 #include <linux/spinlock.h> 13 #include <drm/drm_device.h> 14 #include <drm/drm_mm.h> 15 #include <drm/gpu_scheduler.h> 16 17 #include "panfrost_devfreq.h" 18 19 struct panfrost_device; 20 struct panfrost_mmu; 21 struct panfrost_job_slot; 22 struct panfrost_job; 23 struct panfrost_perfcnt; 24 25 #define NUM_JOB_SLOTS 3 26 #define MAX_PM_DOMAINS 5 27 28 struct panfrost_features { 29 u16 id; 30 u16 revision; 31 32 u64 shader_present; 33 u64 tiler_present; 34 u64 l2_present; 35 u64 stack_present; 36 u32 as_present; 37 u32 js_present; 38 39 u32 l2_features; 40 u32 core_features; 41 u32 tiler_features; 42 u32 mem_features; 43 u32 mmu_features; 44 u32 thread_features; 45 u32 max_threads; 46 u32 thread_max_workgroup_sz; 47 u32 thread_max_barrier_sz; 48 u32 coherency_features; 49 u32 afbc_features; 50 u32 texture_features[4]; 51 u32 js_features[16]; 52 53 u32 nr_core_groups; 54 u32 thread_tls_alloc; 55 56 unsigned long hw_features[64 / BITS_PER_LONG]; 57 unsigned long hw_issues[64 / BITS_PER_LONG]; 58 }; 59 60 /* 61 * Features that cannot be automatically detected and need matching using the 62 * compatible string, typically SoC-specific. 63 */ 64 struct panfrost_compatible { 65 /* Supplies count and names. */ 66 int num_supplies; 67 const char * const *supply_names; 68 /* 69 * Number of power domains required, note that values 0 and 1 are 70 * handled identically, as only values > 1 need special handling. 71 */ 72 int num_pm_domains; 73 /* Only required if num_pm_domains > 1. */ 74 const char * const *pm_domain_names; 75 76 /* Vendor implementation quirks callback */ 77 void (*vendor_quirk)(struct panfrost_device *pfdev); 78 }; 79 80 struct panfrost_device { 81 struct device *dev; 82 struct drm_device *ddev; 83 struct platform_device *pdev; 84 85 void __iomem *iomem; 86 struct clk *clock; 87 struct clk *bus_clock; 88 struct regulator_bulk_data *regulators; 89 struct reset_control *rstc; 90 /* pm_domains for devices with more than one. */ 91 struct device *pm_domain_devs[MAX_PM_DOMAINS]; 92 struct device_link *pm_domain_links[MAX_PM_DOMAINS]; 93 bool coherent; 94 95 struct panfrost_features features; 96 const struct panfrost_compatible *comp; 97 98 spinlock_t as_lock; 99 unsigned long as_in_use_mask; 100 unsigned long as_alloc_mask; 101 unsigned long as_faulty_mask; 102 struct list_head as_lru_list; 103 104 struct panfrost_job_slot *js; 105 106 struct panfrost_job *jobs[NUM_JOB_SLOTS][2]; 107 struct list_head scheduled_jobs; 108 109 struct panfrost_perfcnt *perfcnt; 110 111 struct mutex sched_lock; 112 113 struct { 114 struct workqueue_struct *wq; 115 struct work_struct work; 116 atomic_t pending; 117 } reset; 118 119 struct mutex shrinker_lock; 120 struct list_head shrinker_list; 121 struct shrinker shrinker; 122 123 struct panfrost_devfreq pfdevfreq; 124 }; 125 126 struct panfrost_mmu { 127 struct panfrost_device *pfdev; 128 struct kref refcount; 129 struct io_pgtable_cfg pgtbl_cfg; 130 struct io_pgtable_ops *pgtbl_ops; 131 struct drm_mm mm; 132 spinlock_t mm_lock; 133 int as; 134 atomic_t as_count; 135 struct list_head list; 136 }; 137 138 struct panfrost_file_priv { 139 struct panfrost_device *pfdev; 140 141 struct drm_sched_entity sched_entity[NUM_JOB_SLOTS]; 142 143 struct panfrost_mmu *mmu; 144 }; 145 146 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev) 147 { 148 return ddev->dev_private; 149 } 150 151 static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id) 152 { 153 s32 match_id = pfdev->features.id; 154 155 if (match_id & 0xf000) 156 match_id &= 0xf00f; 157 return match_id - id; 158 } 159 160 static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev) 161 { 162 return panfrost_model_cmp(pfdev, 0x1000) >= 0; 163 } 164 165 static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id) 166 { 167 return !panfrost_model_cmp(pfdev, id); 168 } 169 170 int panfrost_unstable_ioctl_check(void); 171 172 int panfrost_device_init(struct panfrost_device *pfdev); 173 void panfrost_device_fini(struct panfrost_device *pfdev); 174 void panfrost_device_reset(struct panfrost_device *pfdev); 175 176 extern const struct dev_pm_ops panfrost_pm_ops; 177 178 enum drm_panfrost_exception_type { 179 DRM_PANFROST_EXCEPTION_OK = 0x00, 180 DRM_PANFROST_EXCEPTION_DONE = 0x01, 181 DRM_PANFROST_EXCEPTION_INTERRUPTED = 0x02, 182 DRM_PANFROST_EXCEPTION_STOPPED = 0x03, 183 DRM_PANFROST_EXCEPTION_TERMINATED = 0x04, 184 DRM_PANFROST_EXCEPTION_KABOOM = 0x05, 185 DRM_PANFROST_EXCEPTION_EUREKA = 0x06, 186 DRM_PANFROST_EXCEPTION_ACTIVE = 0x08, 187 DRM_PANFROST_EXCEPTION_MAX_NON_FAULT = 0x3f, 188 DRM_PANFROST_EXCEPTION_JOB_CONFIG_FAULT = 0x40, 189 DRM_PANFROST_EXCEPTION_JOB_POWER_FAULT = 0x41, 190 DRM_PANFROST_EXCEPTION_JOB_READ_FAULT = 0x42, 191 DRM_PANFROST_EXCEPTION_JOB_WRITE_FAULT = 0x43, 192 DRM_PANFROST_EXCEPTION_JOB_AFFINITY_FAULT = 0x44, 193 DRM_PANFROST_EXCEPTION_JOB_BUS_FAULT = 0x48, 194 DRM_PANFROST_EXCEPTION_INSTR_INVALID_PC = 0x50, 195 DRM_PANFROST_EXCEPTION_INSTR_INVALID_ENC = 0x51, 196 DRM_PANFROST_EXCEPTION_INSTR_TYPE_MISMATCH = 0x52, 197 DRM_PANFROST_EXCEPTION_INSTR_OPERAND_FAULT = 0x53, 198 DRM_PANFROST_EXCEPTION_INSTR_TLS_FAULT = 0x54, 199 DRM_PANFROST_EXCEPTION_INSTR_BARRIER_FAULT = 0x55, 200 DRM_PANFROST_EXCEPTION_INSTR_ALIGN_FAULT = 0x56, 201 DRM_PANFROST_EXCEPTION_DATA_INVALID_FAULT = 0x58, 202 DRM_PANFROST_EXCEPTION_TILE_RANGE_FAULT = 0x59, 203 DRM_PANFROST_EXCEPTION_ADDR_RANGE_FAULT = 0x5a, 204 DRM_PANFROST_EXCEPTION_IMPRECISE_FAULT = 0x5b, 205 DRM_PANFROST_EXCEPTION_OOM = 0x60, 206 DRM_PANFROST_EXCEPTION_OOM_AFBC = 0x61, 207 DRM_PANFROST_EXCEPTION_UNKNOWN = 0x7f, 208 DRM_PANFROST_EXCEPTION_DELAYED_BUS_FAULT = 0x80, 209 DRM_PANFROST_EXCEPTION_GPU_SHAREABILITY_FAULT = 0x88, 210 DRM_PANFROST_EXCEPTION_SYS_SHAREABILITY_FAULT = 0x89, 211 DRM_PANFROST_EXCEPTION_GPU_CACHEABILITY_FAULT = 0x8a, 212 DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_0 = 0xc0, 213 DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_1 = 0xc1, 214 DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_2 = 0xc2, 215 DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_3 = 0xc3, 216 DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_4 = 0xc4, 217 DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_IDENTITY = 0xc7, 218 DRM_PANFROST_EXCEPTION_PERM_FAULT_0 = 0xc8, 219 DRM_PANFROST_EXCEPTION_PERM_FAULT_1 = 0xc9, 220 DRM_PANFROST_EXCEPTION_PERM_FAULT_2 = 0xca, 221 DRM_PANFROST_EXCEPTION_PERM_FAULT_3 = 0xcb, 222 DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_0 = 0xd0, 223 DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_1 = 0xd1, 224 DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_2 = 0xd2, 225 DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_3 = 0xd3, 226 DRM_PANFROST_EXCEPTION_ACCESS_FLAG_0 = 0xd8, 227 DRM_PANFROST_EXCEPTION_ACCESS_FLAG_1 = 0xd9, 228 DRM_PANFROST_EXCEPTION_ACCESS_FLAG_2 = 0xda, 229 DRM_PANFROST_EXCEPTION_ACCESS_FLAG_3 = 0xdb, 230 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN0 = 0xe0, 231 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN1 = 0xe1, 232 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN2 = 0xe2, 233 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN3 = 0xe3, 234 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT0 = 0xe4, 235 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT1 = 0xe5, 236 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT2 = 0xe6, 237 DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT3 = 0xe7, 238 DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_0 = 0xe8, 239 DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_1 = 0xe9, 240 DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_2 = 0xea, 241 DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_3 = 0xeb, 242 DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_0 = 0xec, 243 DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_1 = 0xed, 244 DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_2 = 0xee, 245 DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_3 = 0xef, 246 }; 247 248 static inline bool 249 panfrost_exception_is_fault(u32 exception_code) 250 { 251 return exception_code > DRM_PANFROST_EXCEPTION_MAX_NON_FAULT; 252 } 253 254 const char *panfrost_exception_name(u32 exception_code); 255 bool panfrost_exception_needs_reset(const struct panfrost_device *pfdev, 256 u32 exception_code); 257 258 static inline void 259 panfrost_device_schedule_reset(struct panfrost_device *pfdev) 260 { 261 atomic_set(&pfdev->reset.pending, 1); 262 queue_work(pfdev->reset.wq, &pfdev->reset.work); 263 } 264 265 #endif 266