drivers/gpu/drm/panfrost/panfrost_device.h

   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 /**
  29  * enum panfrost_gpu_pm - Supported kernel power management features
  30  * @GPU_PM_CLK_DIS:  Allow disabling clocks during system suspend
  31  * @GPU_PM_VREG_OFF: Allow turning off regulators during system suspend
  32  */
  33 enum panfrost_gpu_pm {
  34         GPU_PM_CLK_DIS,
  35         GPU_PM_VREG_OFF,
  36 };
  37
  38 struct panfrost_features {
  39         u16 id;
  40         u16 revision;
  41
  42         u64 shader_present;
  43         u64 tiler_present;
  44         u64 l2_present;
  45         u64 stack_present;
  46         u32 as_present;
  47         u32 js_present;
  48
  49         u32 l2_features;
  50         u32 core_features;
  51         u32 tiler_features;
  52         u32 mem_features;
  53         u32 mmu_features;
  54         u32 thread_features;
  55         u32 max_threads;
  56         u32 thread_max_workgroup_sz;
  57         u32 thread_max_barrier_sz;
  58         u32 coherency_features;
  59         u32 afbc_features;
  60         u32 texture_features[4];
  61         u32 js_features[16];
  62
  63         u32 nr_core_groups;
  64         u32 thread_tls_alloc;
  65
  66         unsigned long hw_features[64 / BITS_PER_LONG];
  67         unsigned long hw_issues[64 / BITS_PER_LONG];
  68 };
  69
  70 /*
  71  * Features that cannot be automatically detected and need matching using the
  72  * compatible string, typically SoC-specific.
  73  */
  74 struct panfrost_compatible {
  75         /* Supplies count and names. */
  76         int num_supplies;
  77         const char * const *supply_names;
  78         /*
  79          * Number of power domains required, note that values 0 and 1 are
  80          * handled identically, as only values > 1 need special handling.
  81          */
  82         int num_pm_domains;
  83         /* Only required if num_pm_domains > 1. */
  84         const char * const *pm_domain_names;
  85
  86         /* Vendor implementation quirks callback */
  87         void (*vendor_quirk)(struct panfrost_device *pfdev);
  88
  89         /* Allowed PM features */
  90         u8 pm_features;
  91 };
  92
  93 struct panfrost_device {
  94         struct device *dev;
  95         struct drm_device *ddev;
  96         struct platform_device *pdev;
  97
  98         void __iomem *iomem;
  99         struct clk *clock;
 100         struct clk *bus_clock;
 101         struct regulator_bulk_data *regulators;
 102         struct reset_control *rstc;
 103         /* pm_domains for devices with more than one. */
 104         struct device *pm_domain_devs[MAX_PM_DOMAINS];
 105         struct device_link *pm_domain_links[MAX_PM_DOMAINS];
 106         bool coherent;
 107
 108         struct panfrost_features features;
 109         const struct panfrost_compatible *comp;
 110
 111         spinlock_t as_lock;
 112         unsigned long as_in_use_mask;
 113         unsigned long as_alloc_mask;
 114         unsigned long as_faulty_mask;
 115         struct list_head as_lru_list;
 116
 117         struct panfrost_job_slot *js;
 118
 119         struct panfrost_job *jobs[NUM_JOB_SLOTS][2];
 120         struct list_head scheduled_jobs;
 121
 122         struct panfrost_perfcnt *perfcnt;
 123         atomic_t profile_mode;
 124
 125         struct mutex sched_lock;
 126
 127         struct {
 128                 struct workqueue_struct *wq;
 129                 struct work_struct work;
 130                 atomic_t pending;
 131         } reset;
 132
 133         struct mutex shrinker_lock;
 134         struct list_head shrinker_list;
 135         struct shrinker *shrinker;
 136
 137         struct panfrost_devfreq pfdevfreq;
 138
 139         struct {
 140                 atomic_t use_count;
 141                 spinlock_t lock;
 142         } cycle_counter;
 143 };
 144
 145 struct panfrost_mmu {
 146         struct panfrost_device *pfdev;
 147         struct kref refcount;
 148         struct io_pgtable_cfg pgtbl_cfg;
 149         struct io_pgtable_ops *pgtbl_ops;
 150         struct drm_mm mm;
 151         spinlock_t mm_lock;
 152         int as;
 153         atomic_t as_count;
 154         struct list_head list;
 155 };
 156
 157 struct panfrost_engine_usage {
 158         unsigned long long elapsed_ns[NUM_JOB_SLOTS];
 159         unsigned long long cycles[NUM_JOB_SLOTS];
 160 };
 161
 162 struct panfrost_file_priv {
 163         struct panfrost_device *pfdev;
 164
 165         struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
 166
 167         struct panfrost_mmu *mmu;
 168
 169         struct panfrost_engine_usage engine_usage;
 170 };
 171
 172 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
 173 {
 174         return ddev->dev_private;
 175 }
 176
 177 static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
 178 {
 179         s32 match_id = pfdev->features.id;
 180
 181         if (match_id & 0xf000)
 182                 match_id &= 0xf00f;
 183         return match_id - id;
 184 }
 185
 186 static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev)
 187 {
 188         return panfrost_model_cmp(pfdev, 0x1000) >= 0;
 189 }
 190
 191 static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
 192 {
 193         return !panfrost_model_cmp(pfdev, id);
 194 }
 195
 196 int panfrost_unstable_ioctl_check(void);
 197
 198 int panfrost_device_init(struct panfrost_device *pfdev);
 199 void panfrost_device_fini(struct panfrost_device *pfdev);
 200 void panfrost_device_reset(struct panfrost_device *pfdev);
 201
 202 extern const struct dev_pm_ops panfrost_pm_ops;
 203
 204 enum drm_panfrost_exception_type {
 205         DRM_PANFROST_EXCEPTION_OK = 0x00,
 206         DRM_PANFROST_EXCEPTION_DONE = 0x01,
 207         DRM_PANFROST_EXCEPTION_INTERRUPTED = 0x02,
 208         DRM_PANFROST_EXCEPTION_STOPPED = 0x03,
 209         DRM_PANFROST_EXCEPTION_TERMINATED = 0x04,
 210         DRM_PANFROST_EXCEPTION_KABOOM = 0x05,
 211         DRM_PANFROST_EXCEPTION_EUREKA = 0x06,
 212         DRM_PANFROST_EXCEPTION_ACTIVE = 0x08,
 213         DRM_PANFROST_EXCEPTION_MAX_NON_FAULT = 0x3f,
 214         DRM_PANFROST_EXCEPTION_JOB_CONFIG_FAULT = 0x40,
 215         DRM_PANFROST_EXCEPTION_JOB_POWER_FAULT = 0x41,
 216         DRM_PANFROST_EXCEPTION_JOB_READ_FAULT = 0x42,
 217         DRM_PANFROST_EXCEPTION_JOB_WRITE_FAULT = 0x43,
 218         DRM_PANFROST_EXCEPTION_JOB_AFFINITY_FAULT = 0x44,
 219         DRM_PANFROST_EXCEPTION_JOB_BUS_FAULT = 0x48,
 220         DRM_PANFROST_EXCEPTION_INSTR_INVALID_PC = 0x50,
 221         DRM_PANFROST_EXCEPTION_INSTR_INVALID_ENC = 0x51,
 222         DRM_PANFROST_EXCEPTION_INSTR_TYPE_MISMATCH = 0x52,
 223         DRM_PANFROST_EXCEPTION_INSTR_OPERAND_FAULT = 0x53,
 224         DRM_PANFROST_EXCEPTION_INSTR_TLS_FAULT = 0x54,
 225         DRM_PANFROST_EXCEPTION_INSTR_BARRIER_FAULT = 0x55,
 226         DRM_PANFROST_EXCEPTION_INSTR_ALIGN_FAULT = 0x56,
 227         DRM_PANFROST_EXCEPTION_DATA_INVALID_FAULT = 0x58,
 228         DRM_PANFROST_EXCEPTION_TILE_RANGE_FAULT = 0x59,
 229         DRM_PANFROST_EXCEPTION_ADDR_RANGE_FAULT = 0x5a,
 230         DRM_PANFROST_EXCEPTION_IMPRECISE_FAULT = 0x5b,
 231         DRM_PANFROST_EXCEPTION_OOM = 0x60,
 232         DRM_PANFROST_EXCEPTION_OOM_AFBC = 0x61,
 233         DRM_PANFROST_EXCEPTION_UNKNOWN = 0x7f,
 234         DRM_PANFROST_EXCEPTION_DELAYED_BUS_FAULT = 0x80,
 235         DRM_PANFROST_EXCEPTION_GPU_SHAREABILITY_FAULT = 0x88,
 236         DRM_PANFROST_EXCEPTION_SYS_SHAREABILITY_FAULT = 0x89,
 237         DRM_PANFROST_EXCEPTION_GPU_CACHEABILITY_FAULT = 0x8a,
 238         DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_0 = 0xc0,
 239         DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_1 = 0xc1,
 240         DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_2 = 0xc2,
 241         DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_3 = 0xc3,
 242         DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_4 = 0xc4,
 243         DRM_PANFROST_EXCEPTION_TRANSLATION_FAULT_IDENTITY = 0xc7,
 244         DRM_PANFROST_EXCEPTION_PERM_FAULT_0 = 0xc8,
 245         DRM_PANFROST_EXCEPTION_PERM_FAULT_1 = 0xc9,
 246         DRM_PANFROST_EXCEPTION_PERM_FAULT_2 = 0xca,
 247         DRM_PANFROST_EXCEPTION_PERM_FAULT_3 = 0xcb,
 248         DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_0 = 0xd0,
 249         DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_1 = 0xd1,
 250         DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_2 = 0xd2,
 251         DRM_PANFROST_EXCEPTION_TRANSTAB_BUS_FAULT_3 = 0xd3,
 252         DRM_PANFROST_EXCEPTION_ACCESS_FLAG_0 = 0xd8,
 253         DRM_PANFROST_EXCEPTION_ACCESS_FLAG_1 = 0xd9,
 254         DRM_PANFROST_EXCEPTION_ACCESS_FLAG_2 = 0xda,
 255         DRM_PANFROST_EXCEPTION_ACCESS_FLAG_3 = 0xdb,
 256         DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN0 = 0xe0,
 257         DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN1 = 0xe1,
 258         DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN2 = 0xe2,
 259         DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_IN3 = 0xe3,
 260         DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT0 = 0xe4,
 261         DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT1 = 0xe5,
 262         DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT2 = 0xe6,
 263         DRM_PANFROST_EXCEPTION_ADDR_SIZE_FAULT_OUT3 = 0xe7,
 264         DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_0 = 0xe8,
 265         DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_1 = 0xe9,
 266         DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_2 = 0xea,
 267         DRM_PANFROST_EXCEPTION_MEM_ATTR_FAULT_3 = 0xeb,
 268         DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_0 = 0xec,
 269         DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_1 = 0xed,
 270         DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_2 = 0xee,
 271         DRM_PANFROST_EXCEPTION_MEM_ATTR_NONCACHE_3 = 0xef,
 272 };
 273
 274 static inline bool
 275 panfrost_exception_is_fault(u32 exception_code)
 276 {
 277         return exception_code > DRM_PANFROST_EXCEPTION_MAX_NON_FAULT;
 278 }
 279
 280 const char *panfrost_exception_name(u32 exception_code);
 281 bool panfrost_exception_needs_reset(const struct panfrost_device *pfdev,
 282                                     u32 exception_code);
 283
 284 static inline void
 285 panfrost_device_schedule_reset(struct panfrost_device *pfdev)
 286 {
 287         atomic_set(&pfdev->reset.pending, 1);
 288         queue_work(pfdev->reset.wq, &pfdev->reset.work);
 289 }
 290
 291 #endif