Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 1 | /* Copyright (c) 2002,2007-2020, The Linux Foundation. All rights reserved. |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | */ |
| 13 | #ifndef __KGSL_DEVICE_H |
| 14 | #define __KGSL_DEVICE_H |
| 15 | |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/idr.h> |
| 18 | #include <linux/pm_qos.h> |
| 19 | #include <linux/sched.h> |
| 20 | |
| 21 | #include "kgsl.h" |
| 22 | #include "kgsl_mmu.h" |
| 23 | #include "kgsl_pwrctrl.h" |
| 24 | #include "kgsl_log.h" |
| 25 | #include "kgsl_pwrscale.h" |
| 26 | #include "kgsl_snapshot.h" |
| 27 | #include "kgsl_sharedmem.h" |
| 28 | #include "kgsl_drawobj.h" |
Kyle Piefer | b1027b0 | 2017-02-10 13:58:58 -0800 | [diff] [blame] | 29 | #include "kgsl_gmu.h" |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 30 | |
| 31 | #define KGSL_IOCTL_FUNC(_cmd, _func) \ |
| 32 | [_IOC_NR((_cmd))] = \ |
| 33 | { .cmd = (_cmd), .func = (_func) } |
| 34 | |
| 35 | /* |
| 36 | * KGSL device state is initialized to INIT when platform_probe * |
| 37 | * successfully initialized the device. Once a device has been opened * |
| 38 | * (started) it becomes active. NAP implies that only low latency * |
| 39 | * resources (for now clocks on some platforms) are off. SLEEP implies * |
| 40 | * that the KGSL module believes a device is idle (has been inactive * |
| 41 | * past its timer) and all system resources are released. SUSPEND is * |
| 42 | * requested by the kernel and will be enforced upon all open devices. * |
Kyle Piefer | e923b7a | 2017-03-28 17:31:48 -0700 | [diff] [blame] | 43 | * RESET indicates that GPU or GMU hang happens. KGSL is handling * |
| 44 | * snapshot or recover GPU from hang. * |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 45 | */ |
| 46 | |
| 47 | #define KGSL_STATE_NONE 0x00000000 |
| 48 | #define KGSL_STATE_INIT 0x00000001 |
| 49 | #define KGSL_STATE_ACTIVE 0x00000002 |
| 50 | #define KGSL_STATE_NAP 0x00000004 |
| 51 | #define KGSL_STATE_SUSPEND 0x00000010 |
| 52 | #define KGSL_STATE_AWARE 0x00000020 |
| 53 | #define KGSL_STATE_SLUMBER 0x00000080 |
Kyle Piefer | e923b7a | 2017-03-28 17:31:48 -0700 | [diff] [blame] | 54 | #define KGSL_STATE_RESET 0x00000100 |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 55 | |
| 56 | /** |
| 57 | * enum kgsl_event_results - result codes passed to an event callback when the |
| 58 | * event is retired or cancelled |
| 59 | * @KGSL_EVENT_RETIRED: The timestamp associated with the event retired |
| 60 | * successflly |
| 61 | * @KGSL_EVENT_CANCELLED: The event was cancelled before the event was fired |
| 62 | */ |
| 63 | enum kgsl_event_results { |
| 64 | KGSL_EVENT_RETIRED = 1, |
| 65 | KGSL_EVENT_CANCELLED = 2, |
| 66 | }; |
| 67 | |
| 68 | #define KGSL_FLAG_WAKE_ON_TOUCH BIT(0) |
Harshdeep Dhatt | 67d23bf | 2019-09-09 11:05:48 -0600 | [diff] [blame] | 69 | #define KGSL_FLAG_SPARSE BIT(1) |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 70 | |
| 71 | /* |
| 72 | * "list" of event types for ftrace symbolic magic |
| 73 | */ |
| 74 | |
| 75 | #define KGSL_EVENT_TYPES \ |
| 76 | { KGSL_EVENT_RETIRED, "retired" }, \ |
| 77 | { KGSL_EVENT_CANCELLED, "cancelled" } |
| 78 | |
| 79 | #define KGSL_CONTEXT_FLAGS \ |
| 80 | { KGSL_CONTEXT_NO_GMEM_ALLOC, "NO_GMEM_ALLOC" }, \ |
| 81 | { KGSL_CONTEXT_PREAMBLE, "PREAMBLE" }, \ |
| 82 | { KGSL_CONTEXT_TRASH_STATE, "TRASH_STATE" }, \ |
| 83 | { KGSL_CONTEXT_CTX_SWITCH, "CTX_SWITCH" }, \ |
| 84 | { KGSL_CONTEXT_PER_CONTEXT_TS, "PER_CONTEXT_TS" }, \ |
| 85 | { KGSL_CONTEXT_USER_GENERATED_TS, "USER_TS" }, \ |
| 86 | { KGSL_CONTEXT_NO_FAULT_TOLERANCE, "NO_FT" }, \ |
Hareesh Gundu | ccfb89b | 2017-04-14 18:36:20 +0530 | [diff] [blame] | 87 | { KGSL_CONTEXT_INVALIDATE_ON_FAULT, "INVALIDATE_ON_FAULT" }, \ |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 88 | { KGSL_CONTEXT_PWR_CONSTRAINT, "PWR" }, \ |
Harshdeep Dhatt | 144c009 | 2017-08-09 10:12:13 -0600 | [diff] [blame] | 89 | { KGSL_CONTEXT_SAVE_GMEM, "SAVE_GMEM" }, \ |
| 90 | { KGSL_CONTEXT_IFH_NOP, "IFH_NOP" }, \ |
| 91 | { KGSL_CONTEXT_SECURE, "SECURE" }, \ |
| 92 | { KGSL_CONTEXT_NO_SNAPSHOT, "NO_SNAPSHOT" }, \ |
| 93 | { KGSL_CONTEXT_SPARSE, "SPARSE" } |
| 94 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 95 | |
| 96 | #define KGSL_CONTEXT_TYPES \ |
| 97 | { KGSL_CONTEXT_TYPE_ANY, "ANY" }, \ |
| 98 | { KGSL_CONTEXT_TYPE_GL, "GL" }, \ |
| 99 | { KGSL_CONTEXT_TYPE_CL, "CL" }, \ |
| 100 | { KGSL_CONTEXT_TYPE_C2D, "C2D" }, \ |
Rajesh Kemisetti | c05883a | 2018-09-17 11:34:08 +0530 | [diff] [blame] | 101 | { KGSL_CONTEXT_TYPE_RS, "RS" }, \ |
| 102 | { KGSL_CONTEXT_TYPE_VK, "VK" } |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 103 | |
| 104 | #define KGSL_CONTEXT_ID(_context) \ |
| 105 | ((_context != NULL) ? (_context)->id : KGSL_MEMSTORE_GLOBAL) |
| 106 | |
| 107 | /* Allocate 600K for the snapshot static region*/ |
| 108 | #define KGSL_SNAPSHOT_MEMSIZE (600 * 1024) |
Urvashi Agrawal | 5324565 | 2018-03-08 14:42:15 -0800 | [diff] [blame] | 109 | #define MAX_L3_LEVELS 3 |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 110 | |
| 111 | struct kgsl_device; |
| 112 | struct platform_device; |
| 113 | struct kgsl_device_private; |
| 114 | struct kgsl_context; |
| 115 | struct kgsl_power_stats; |
| 116 | struct kgsl_event; |
| 117 | struct kgsl_snapshot; |
| 118 | |
| 119 | struct kgsl_functable { |
| 120 | /* Mandatory functions - these functions must be implemented |
| 121 | * by the client device. The driver will not check for a NULL |
| 122 | * pointer before calling the hook. |
| 123 | */ |
| 124 | void (*regread)(struct kgsl_device *device, |
| 125 | unsigned int offsetwords, unsigned int *value); |
| 126 | void (*regwrite)(struct kgsl_device *device, |
| 127 | unsigned int offsetwords, unsigned int value); |
| 128 | int (*idle)(struct kgsl_device *device); |
| 129 | bool (*isidle)(struct kgsl_device *device); |
| 130 | int (*suspend_context)(struct kgsl_device *device); |
| 131 | int (*init)(struct kgsl_device *device); |
| 132 | int (*start)(struct kgsl_device *device, int priority); |
| 133 | int (*stop)(struct kgsl_device *device); |
Kyle Piefer | b1027b0 | 2017-02-10 13:58:58 -0800 | [diff] [blame] | 134 | void (*gmu_regread)(struct kgsl_device *device, |
| 135 | unsigned int offsetwords, unsigned int *value); |
| 136 | void (*gmu_regwrite)(struct kgsl_device *device, |
| 137 | unsigned int offsetwords, unsigned int value); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 138 | int (*getproperty)(struct kgsl_device *device, |
| 139 | unsigned int type, void __user *value, |
| 140 | size_t sizebytes); |
| 141 | int (*getproperty_compat)(struct kgsl_device *device, |
| 142 | unsigned int type, void __user *value, |
| 143 | size_t sizebytes); |
| 144 | int (*waittimestamp)(struct kgsl_device *device, |
| 145 | struct kgsl_context *context, unsigned int timestamp, |
| 146 | unsigned int msecs); |
| 147 | int (*readtimestamp)(struct kgsl_device *device, void *priv, |
| 148 | enum kgsl_timestamp_type type, unsigned int *timestamp); |
| 149 | int (*queue_cmds)(struct kgsl_device_private *dev_priv, |
| 150 | struct kgsl_context *context, struct kgsl_drawobj *drawobj[], |
| 151 | uint32_t count, uint32_t *timestamp); |
| 152 | void (*power_stats)(struct kgsl_device *device, |
| 153 | struct kgsl_power_stats *stats); |
| 154 | unsigned int (*gpuid)(struct kgsl_device *device, unsigned int *chipid); |
| 155 | void (*snapshot)(struct kgsl_device *device, |
| 156 | struct kgsl_snapshot *snapshot, struct kgsl_context *context); |
| 157 | irqreturn_t (*irq_handler)(struct kgsl_device *device); |
| 158 | int (*drain)(struct kgsl_device *device); |
Harshdeep Dhatt | f61e3b5 | 2014-12-15 13:45:19 -0700 | [diff] [blame] | 159 | struct kgsl_device_private * (*device_private_create)(void); |
| 160 | void (*device_private_destroy)(struct kgsl_device_private *dev_priv); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 161 | /* |
| 162 | * Optional functions - these functions are not mandatory. The |
| 163 | * driver will check that the function pointer is not NULL before |
| 164 | * calling the hook |
| 165 | */ |
| 166 | struct kgsl_context *(*drawctxt_create)(struct kgsl_device_private *, |
| 167 | uint32_t *flags); |
| 168 | void (*drawctxt_detach)(struct kgsl_context *context); |
| 169 | void (*drawctxt_destroy)(struct kgsl_context *context); |
| 170 | void (*drawctxt_dump)(struct kgsl_device *device, |
| 171 | struct kgsl_context *context); |
| 172 | long (*ioctl)(struct kgsl_device_private *dev_priv, |
| 173 | unsigned int cmd, unsigned long arg); |
| 174 | long (*compat_ioctl)(struct kgsl_device_private *dev_priv, |
| 175 | unsigned int cmd, unsigned long arg); |
| 176 | int (*setproperty)(struct kgsl_device_private *dev_priv, |
| 177 | unsigned int type, void __user *value, |
| 178 | unsigned int sizebytes); |
| 179 | int (*setproperty_compat)(struct kgsl_device_private *dev_priv, |
| 180 | unsigned int type, void __user *value, |
| 181 | unsigned int sizebytes); |
| 182 | void (*drawctxt_sched)(struct kgsl_device *device, |
| 183 | struct kgsl_context *context); |
| 184 | void (*resume)(struct kgsl_device *device); |
| 185 | int (*regulator_enable)(struct kgsl_device *); |
| 186 | bool (*is_hw_collapsible)(struct kgsl_device *); |
| 187 | void (*regulator_disable)(struct kgsl_device *); |
| 188 | void (*pwrlevel_change_settings)(struct kgsl_device *device, |
| 189 | unsigned int prelevel, unsigned int postlevel, bool post); |
| 190 | void (*regulator_disable_poll)(struct kgsl_device *device); |
| 191 | void (*clk_set_options)(struct kgsl_device *device, |
Deepak Kumar | a309e0e | 2017-03-17 17:27:42 +0530 | [diff] [blame] | 192 | const char *name, struct clk *clk, bool on); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 193 | void (*gpu_model)(struct kgsl_device *device, char *str, |
| 194 | size_t bufsz); |
Hareesh Gundu | a2fe6ec | 2017-03-06 14:53:36 +0530 | [diff] [blame] | 195 | void (*stop_fault_timer)(struct kgsl_device *device); |
Deepak Kumar | 79908f5 | 2018-02-28 11:06:38 +0530 | [diff] [blame] | 196 | void (*dispatcher_halt)(struct kgsl_device *device); |
| 197 | void (*dispatcher_unhalt)(struct kgsl_device *device); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 198 | }; |
| 199 | |
| 200 | struct kgsl_ioctl { |
| 201 | unsigned int cmd; |
| 202 | long (*func)(struct kgsl_device_private *, unsigned int, void *); |
| 203 | }; |
| 204 | |
| 205 | long kgsl_ioctl_helper(struct file *filep, unsigned int cmd, unsigned long arg, |
| 206 | const struct kgsl_ioctl *cmds, int len); |
| 207 | |
| 208 | /* Flag to mark the memobj_node as a preamble */ |
| 209 | #define MEMOBJ_PREAMBLE BIT(0) |
| 210 | /* Flag to mark that the memobj_node should not go to the hadrware */ |
| 211 | #define MEMOBJ_SKIP BIT(1) |
| 212 | |
| 213 | /** |
| 214 | * struct kgsl_memobj_node - Memory object descriptor |
| 215 | * @node: Local list node for the object |
| 216 | * @id: GPU memory ID for the object |
| 217 | * offset: Offset within the object |
| 218 | * @gpuaddr: GPU address for the object |
| 219 | * @flags: External flags passed by the user |
| 220 | * @priv: Internal flags set by the driver |
| 221 | */ |
| 222 | struct kgsl_memobj_node { |
| 223 | struct list_head node; |
| 224 | unsigned int id; |
| 225 | uint64_t offset; |
| 226 | uint64_t gpuaddr; |
| 227 | uint64_t size; |
| 228 | unsigned long flags; |
| 229 | unsigned long priv; |
| 230 | }; |
| 231 | |
Tarun Karra | 2b8b363 | 2016-11-14 16:38:27 -0800 | [diff] [blame] | 232 | /** |
| 233 | * struct kgsl_sparseobj_node - Sparse object descriptor |
| 234 | * @node: Local list node for the sparse cmdbatch |
| 235 | * @virt_id: Virtual ID to bind/unbind |
| 236 | * @obj: struct kgsl_sparse_binding_object |
| 237 | */ |
| 238 | struct kgsl_sparseobj_node { |
| 239 | struct list_head node; |
| 240 | unsigned int virt_id; |
| 241 | struct kgsl_sparse_binding_object obj; |
| 242 | }; |
| 243 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 244 | struct kgsl_device { |
| 245 | struct device *dev; |
| 246 | const char *name; |
| 247 | unsigned int ver_major; |
| 248 | unsigned int ver_minor; |
| 249 | uint32_t flags; |
| 250 | enum kgsl_deviceid id; |
| 251 | |
| 252 | /* Starting physical address for GPU registers */ |
| 253 | unsigned long reg_phys; |
| 254 | |
| 255 | /* Starting Kernel virtual address for GPU registers */ |
| 256 | void __iomem *reg_virt; |
| 257 | |
| 258 | /* Total memory size for all GPU registers */ |
| 259 | unsigned int reg_len; |
| 260 | |
| 261 | /* Kernel virtual address for GPU shader memory */ |
| 262 | void __iomem *shader_mem_virt; |
| 263 | |
| 264 | /* Starting physical address for GPU shader memory */ |
| 265 | unsigned long shader_mem_phys; |
| 266 | |
| 267 | /* GPU shader memory size */ |
| 268 | unsigned int shader_mem_len; |
| 269 | struct kgsl_memdesc memstore; |
| 270 | struct kgsl_memdesc scratch; |
| 271 | const char *iomemname; |
| 272 | const char *shadermemname; |
| 273 | |
| 274 | struct kgsl_mmu mmu; |
Kyle Piefer | b1027b0 | 2017-02-10 13:58:58 -0800 | [diff] [blame] | 275 | struct gmu_device gmu; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 276 | struct completion hwaccess_gate; |
| 277 | struct completion halt_gate; |
| 278 | const struct kgsl_functable *ftbl; |
| 279 | struct work_struct idle_check_ws; |
| 280 | struct timer_list idle_timer; |
| 281 | struct kgsl_pwrctrl pwrctrl; |
| 282 | int open_count; |
| 283 | |
Hareesh Gundu | 2eb74d7 | 2017-06-07 14:50:15 +0530 | [diff] [blame] | 284 | /* For GPU inline submission */ |
| 285 | uint32_t submit_now; |
| 286 | spinlock_t submit_lock; |
| 287 | bool slumber; |
| 288 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 289 | struct mutex mutex; |
| 290 | uint32_t state; |
| 291 | uint32_t requested_state; |
| 292 | |
| 293 | atomic_t active_cnt; |
| 294 | |
| 295 | wait_queue_head_t wait_queue; |
| 296 | wait_queue_head_t active_cnt_wq; |
| 297 | struct platform_device *pdev; |
| 298 | struct dentry *d_debugfs; |
| 299 | struct idr context_idr; |
| 300 | rwlock_t context_lock; |
| 301 | |
| 302 | struct { |
| 303 | void *ptr; |
| 304 | size_t size; |
| 305 | } snapshot_memory; |
| 306 | |
| 307 | struct kgsl_snapshot *snapshot; |
| 308 | |
| 309 | u32 snapshot_faultcount; /* Total number of faults since boot */ |
| 310 | bool force_panic; /* Force panic after snapshot dump */ |
Kyle Piefer | f698a7f | 2018-01-10 10:19:03 -0800 | [diff] [blame] | 311 | bool prioritize_unrecoverable; /* Overwrite with new GMU snapshots */ |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 312 | |
| 313 | /* Use CP Crash dumper to get GPU snapshot*/ |
| 314 | bool snapshot_crashdumper; |
Harshdeep Dhatt | 134f7af | 2017-05-17 13:54:41 -0600 | [diff] [blame] | 315 | /* Use HOST side register reads to get GPU snapshot*/ |
| 316 | bool snapshot_legacy; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 317 | |
| 318 | struct kobject snapshot_kobj; |
| 319 | |
| 320 | struct kobject ppd_kobj; |
| 321 | |
| 322 | /* Logging levels */ |
| 323 | int cmd_log; |
| 324 | int ctxt_log; |
| 325 | int drv_log; |
| 326 | int mem_log; |
| 327 | int pwr_log; |
| 328 | struct kgsl_pwrscale pwrscale; |
| 329 | |
| 330 | int reset_counter; /* Track how many GPU core resets have occurred */ |
| 331 | struct workqueue_struct *events_wq; |
| 332 | |
| 333 | struct device *busmondev; /* pseudo dev for GPU BW voting governor */ |
| 334 | |
| 335 | /* Number of active contexts seen globally for this device */ |
| 336 | int active_context_count; |
| 337 | struct kobject *gpu_sysfs_kobj; |
Urvashi Agrawal | 5324565 | 2018-03-08 14:42:15 -0800 | [diff] [blame] | 338 | struct clk *l3_clk; |
| 339 | unsigned int l3_freq[MAX_L3_LEVELS]; |
| 340 | unsigned int num_l3_pwrlevels; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 341 | }; |
| 342 | |
| 343 | #define KGSL_MMU_DEVICE(_mmu) \ |
| 344 | container_of((_mmu), struct kgsl_device, mmu) |
| 345 | |
| 346 | #define KGSL_DEVICE_COMMON_INIT(_dev) \ |
| 347 | .hwaccess_gate = COMPLETION_INITIALIZER((_dev).hwaccess_gate),\ |
| 348 | .halt_gate = COMPLETION_INITIALIZER((_dev).halt_gate),\ |
| 349 | .idle_check_ws = __WORK_INITIALIZER((_dev).idle_check_ws,\ |
| 350 | kgsl_idle_check),\ |
| 351 | .context_idr = IDR_INIT((_dev).context_idr),\ |
| 352 | .wait_queue = __WAIT_QUEUE_HEAD_INITIALIZER((_dev).wait_queue),\ |
| 353 | .active_cnt_wq = __WAIT_QUEUE_HEAD_INITIALIZER((_dev).active_cnt_wq),\ |
| 354 | .mutex = __MUTEX_INITIALIZER((_dev).mutex),\ |
| 355 | .state = KGSL_STATE_NONE,\ |
| 356 | .ver_major = DRIVER_VERSION_MAJOR,\ |
| 357 | .ver_minor = DRIVER_VERSION_MINOR |
| 358 | |
| 359 | |
| 360 | /** |
| 361 | * enum bits for struct kgsl_context.priv |
Hareesh Gundu | 7d5a8f2 | 2017-02-21 13:23:46 +0530 | [diff] [blame] | 362 | * @KGSL_CONTEXT_PRIV_SUBMITTED - The context has submitted commands to gpu. |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 363 | * @KGSL_CONTEXT_PRIV_DETACHED - The context has been destroyed by userspace |
| 364 | * and is no longer using the gpu. |
| 365 | * @KGSL_CONTEXT_PRIV_INVALID - The context has been destroyed by the kernel |
| 366 | * because it caused a GPU fault. |
| 367 | * @KGSL_CONTEXT_PRIV_PAGEFAULT - The context has caused a page fault. |
| 368 | * @KGSL_CONTEXT_PRIV_DEVICE_SPECIFIC - this value and higher values are |
| 369 | * reserved for devices specific use. |
| 370 | */ |
| 371 | enum kgsl_context_priv { |
Hareesh Gundu | 7d5a8f2 | 2017-02-21 13:23:46 +0530 | [diff] [blame] | 372 | KGSL_CONTEXT_PRIV_SUBMITTED = 0, |
| 373 | KGSL_CONTEXT_PRIV_DETACHED, |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 374 | KGSL_CONTEXT_PRIV_INVALID, |
| 375 | KGSL_CONTEXT_PRIV_PAGEFAULT, |
| 376 | KGSL_CONTEXT_PRIV_DEVICE_SPECIFIC = 16, |
| 377 | }; |
| 378 | |
| 379 | struct kgsl_process_private; |
| 380 | |
| 381 | /** |
| 382 | * struct kgsl_context - The context fields that are valid for a user defined |
| 383 | * context |
| 384 | * @refcount: kref object for reference counting the context |
| 385 | * @id: integer identifier for the context |
| 386 | * @priority; The context's priority to submit commands to GPU |
| 387 | * @tid: task that created this context. |
| 388 | * @dev_priv: pointer to the owning device instance |
| 389 | * @proc_priv: pointer to process private, the process that allocated the |
| 390 | * context |
| 391 | * @priv: in-kernel context flags, use KGSL_CONTEXT_* values |
| 392 | * @reset_status: status indication whether a gpu reset occurred and whether |
| 393 | * this context was responsible for causing it |
| 394 | * @timeline: sync timeline used to create fences that can be signaled when a |
| 395 | * sync_pt timestamp expires |
| 396 | * @events: A kgsl_event_group for this context - contains the list of GPU |
| 397 | * events |
| 398 | * @flags: flags from userspace controlling the behavior of this context |
| 399 | * @pwr_constraint: power constraint from userspace for this context |
| 400 | * @fault_count: number of times gpu hanged in last _context_throttle_time ms |
| 401 | * @fault_time: time of the first gpu hang in last _context_throttle_time ms |
Harshdeep Dhatt | 2e42f12 | 2017-05-31 17:27:19 -0600 | [diff] [blame] | 402 | * @user_ctxt_record: memory descriptor used by CP to save/restore VPC data |
| 403 | * across preemption |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 404 | */ |
| 405 | struct kgsl_context { |
| 406 | struct kref refcount; |
| 407 | uint32_t id; |
| 408 | uint32_t priority; |
| 409 | pid_t tid; |
| 410 | struct kgsl_device_private *dev_priv; |
| 411 | struct kgsl_process_private *proc_priv; |
| 412 | unsigned long priv; |
| 413 | struct kgsl_device *device; |
| 414 | unsigned int reset_status; |
Lynus Vaz | c031a9b | 2017-01-25 13:00:13 +0530 | [diff] [blame] | 415 | struct kgsl_sync_timeline *ktimeline; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 416 | struct kgsl_event_group events; |
| 417 | unsigned int flags; |
| 418 | struct kgsl_pwr_constraint pwr_constraint; |
Urvashi Agrawal | 5324565 | 2018-03-08 14:42:15 -0800 | [diff] [blame] | 419 | struct kgsl_pwr_constraint l3_pwr_constraint; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 420 | unsigned int fault_count; |
| 421 | unsigned long fault_time; |
Harshdeep Dhatt | 2e42f12 | 2017-05-31 17:27:19 -0600 | [diff] [blame] | 422 | struct kgsl_mem_entry *user_ctxt_record; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 423 | }; |
| 424 | |
| 425 | #define _context_comm(_c) \ |
| 426 | (((_c) && (_c)->proc_priv) ? (_c)->proc_priv->comm : "unknown") |
| 427 | |
| 428 | /* |
| 429 | * Print log messages with the context process name/pid: |
| 430 | * [...] kgsl kgsl-3d0: kgsl-api-test[22182]: |
| 431 | */ |
| 432 | |
| 433 | #define pr_context(_d, _c, fmt, args...) \ |
| 434 | dev_err((_d)->dev, "%s[%d]: " fmt, \ |
| 435 | _context_comm((_c)), \ |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 436 | pid_nr((_c)->proc_priv->pid), ##args) |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 437 | |
| 438 | /** |
| 439 | * struct kgsl_process_private - Private structure for a KGSL process (across |
| 440 | * all devices) |
| 441 | * @priv: Internal flags, use KGSL_PROCESS_* values |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 442 | * @pid: Identification structure for the task owner of the process |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 443 | * @comm: task name of the process |
| 444 | * @mem_lock: Spinlock to protect the process memory lists |
| 445 | * @refcount: kref object for reference counting the process |
| 446 | * @idr: Iterator for assigning IDs to memory allocations |
| 447 | * @pagetable: Pointer to the pagetable owned by this process |
| 448 | * @kobj: Pointer to a kobj for the sysfs directory for this process |
| 449 | * @debug_root: Pointer to the debugfs root for this process |
| 450 | * @stats: Memory allocation statistics for this process |
Amit Kushwaha | 7c843c2 | 2018-04-09 20:41:14 +0530 | [diff] [blame] | 451 | * @gpumem_mapped: KGSL memory mapped in the process address space |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 452 | * @syncsource_idr: sync sources created by this process |
| 453 | * @syncsource_lock: Spinlock to protect the syncsource idr |
| 454 | * @fd_count: Counter for the number of FDs for this process |
Harshdeep Dhatt | 410e8393 | 2017-12-12 14:56:20 -0700 | [diff] [blame] | 455 | * @ctxt_count: Count for the number of contexts for this process |
Deepak Kumar | e0d19f9 | 2018-03-05 16:51:25 +0530 | [diff] [blame] | 456 | * @ctxt_count_lock: Spinlock to protect ctxt_count |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 457 | */ |
| 458 | struct kgsl_process_private { |
| 459 | unsigned long priv; |
Archana Sriram | d66ae7b | 2020-10-18 23:34:04 +0530 | [diff] [blame] | 460 | struct pid *pid; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 461 | char comm[TASK_COMM_LEN]; |
| 462 | spinlock_t mem_lock; |
| 463 | struct kref refcount; |
| 464 | struct idr mem_idr; |
| 465 | struct kgsl_pagetable *pagetable; |
| 466 | struct list_head list; |
| 467 | struct kobject kobj; |
| 468 | struct dentry *debug_root; |
| 469 | struct { |
| 470 | uint64_t cur; |
| 471 | uint64_t max; |
| 472 | } stats[KGSL_MEM_ENTRY_MAX]; |
Amit Kushwaha | 7c843c2 | 2018-04-09 20:41:14 +0530 | [diff] [blame] | 473 | uint64_t gpumem_mapped; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 474 | struct idr syncsource_idr; |
| 475 | spinlock_t syncsource_lock; |
| 476 | int fd_count; |
Harshdeep Dhatt | 410e8393 | 2017-12-12 14:56:20 -0700 | [diff] [blame] | 477 | atomic_t ctxt_count; |
Deepak Kumar | e0d19f9 | 2018-03-05 16:51:25 +0530 | [diff] [blame] | 478 | spinlock_t ctxt_count_lock; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 479 | }; |
| 480 | |
| 481 | /** |
| 482 | * enum kgsl_process_priv_flags - Private flags for kgsl_process_private |
| 483 | * @KGSL_PROCESS_INIT: Set if the process structure has been set up |
| 484 | */ |
| 485 | enum kgsl_process_priv_flags { |
| 486 | KGSL_PROCESS_INIT = 0, |
| 487 | }; |
| 488 | |
| 489 | struct kgsl_device_private { |
| 490 | struct kgsl_device *device; |
| 491 | struct kgsl_process_private *process_priv; |
| 492 | }; |
| 493 | |
| 494 | /** |
| 495 | * struct kgsl_snapshot - details for a specific snapshot instance |
| 496 | * @ib1base: Active IB1 base address at the time of fault |
| 497 | * @ib2base: Active IB2 base address at the time of fault |
| 498 | * @ib1size: Number of DWORDS pending in IB1 at the time of fault |
| 499 | * @ib2size: Number of DWORDS pending in IB2 at the time of fault |
| 500 | * @ib1dumped: Active IB1 dump status to sansphot binary |
| 501 | * @ib2dumped: Active IB2 dump status to sansphot binary |
| 502 | * @start: Pointer to the start of the static snapshot region |
| 503 | * @size: Size of the current snapshot instance |
| 504 | * @ptr: Pointer to the next block of memory to write to during snapshotting |
| 505 | * @remain: Bytes left in the snapshot region |
| 506 | * @timestamp: Timestamp of the snapshot instance (in seconds since boot) |
| 507 | * @mempool: Pointer to the memory pool for storing memory objects |
| 508 | * @mempool_size: Size of the memory pool |
| 509 | * @obj_list: List of frozen GPU buffers that are waiting to be dumped. |
| 510 | * @cp_list: List of IB's to be dumped. |
| 511 | * @work: worker to dump the frozen memory |
| 512 | * @dump_gate: completion gate signaled by worker when it is finished. |
| 513 | * @process: the process that caused the hang, if known. |
Lynus Vaz | 43695aa | 2017-09-01 21:55:23 +0530 | [diff] [blame] | 514 | * @sysfs_read: Count of current reads via sysfs |
| 515 | * @first_read: True until the snapshot read is started |
| 516 | * @gmu_fault: Snapshot collected when GMU fault happened |
George Shen | a411409 | 2017-12-01 11:27:47 -0800 | [diff] [blame] | 517 | * @recovered: True if GPU was recovered after previous snapshot |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 518 | */ |
| 519 | struct kgsl_snapshot { |
| 520 | uint64_t ib1base; |
| 521 | uint64_t ib2base; |
| 522 | unsigned int ib1size; |
| 523 | unsigned int ib2size; |
| 524 | bool ib1dumped; |
| 525 | bool ib2dumped; |
| 526 | u8 *start; |
| 527 | size_t size; |
| 528 | u8 *ptr; |
| 529 | size_t remain; |
| 530 | unsigned long timestamp; |
| 531 | u8 *mempool; |
| 532 | size_t mempool_size; |
| 533 | struct list_head obj_list; |
| 534 | struct list_head cp_list; |
| 535 | struct work_struct work; |
| 536 | struct completion dump_gate; |
| 537 | struct kgsl_process_private *process; |
Lynus Vaz | 43695aa | 2017-09-01 21:55:23 +0530 | [diff] [blame] | 538 | unsigned int sysfs_read; |
| 539 | bool first_read; |
| 540 | bool gmu_fault; |
George Shen | a411409 | 2017-12-01 11:27:47 -0800 | [diff] [blame] | 541 | bool recovered; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 542 | }; |
| 543 | |
| 544 | /** |
| 545 | * struct kgsl_snapshot_object - GPU memory in the snapshot |
| 546 | * @gpuaddr: The GPU address identified during snapshot |
| 547 | * @size: The buffer size identified during snapshot |
| 548 | * @offset: offset from start of the allocated kgsl_mem_entry |
| 549 | * @type: SNAPSHOT_OBJ_TYPE_* identifier. |
| 550 | * @entry: the reference counted memory entry for this buffer |
| 551 | * @node: node for kgsl_snapshot.obj_list |
| 552 | */ |
| 553 | struct kgsl_snapshot_object { |
| 554 | uint64_t gpuaddr; |
| 555 | uint64_t size; |
| 556 | uint64_t offset; |
| 557 | int type; |
| 558 | struct kgsl_mem_entry *entry; |
| 559 | struct list_head node; |
| 560 | }; |
| 561 | |
| 562 | struct kgsl_device *kgsl_get_device(int dev_idx); |
| 563 | |
| 564 | static inline void kgsl_process_add_stats(struct kgsl_process_private *priv, |
| 565 | unsigned int type, uint64_t size) |
| 566 | { |
| 567 | priv->stats[type].cur += size; |
| 568 | if (priv->stats[type].max < priv->stats[type].cur) |
| 569 | priv->stats[type].max = priv->stats[type].cur; |
| 570 | } |
| 571 | |
Lynus Vaz | d37f1d8 | 2017-05-24 16:39:15 +0530 | [diff] [blame] | 572 | static inline bool kgsl_is_register_offset(struct kgsl_device *device, |
| 573 | unsigned int offsetwords) |
| 574 | { |
| 575 | return ((offsetwords * sizeof(uint32_t)) < device->reg_len); |
| 576 | } |
| 577 | |
| 578 | static inline bool kgsl_is_gmu_offset(struct kgsl_device *device, |
| 579 | unsigned int offsetwords) |
| 580 | { |
| 581 | struct gmu_device *gmu = &device->gmu; |
| 582 | |
| 583 | return (gmu->pdev && |
| 584 | (offsetwords >= gmu->gmu2gpu_offset) && |
| 585 | ((offsetwords - gmu->gmu2gpu_offset) * sizeof(uint32_t) < |
| 586 | gmu->reg_len)); |
| 587 | } |
| 588 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 589 | static inline void kgsl_regread(struct kgsl_device *device, |
| 590 | unsigned int offsetwords, |
| 591 | unsigned int *value) |
| 592 | { |
Lynus Vaz | d37f1d8 | 2017-05-24 16:39:15 +0530 | [diff] [blame] | 593 | if (kgsl_is_register_offset(device, offsetwords)) |
| 594 | device->ftbl->regread(device, offsetwords, value); |
| 595 | else if (device->ftbl->gmu_regread && |
| 596 | kgsl_is_gmu_offset(device, offsetwords)) |
| 597 | device->ftbl->gmu_regread(device, offsetwords, value); |
| 598 | else { |
| 599 | WARN(1, "Out of bounds register read: 0x%x\n", offsetwords); |
| 600 | *value = 0; |
| 601 | } |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 602 | } |
| 603 | |
| 604 | static inline void kgsl_regwrite(struct kgsl_device *device, |
| 605 | unsigned int offsetwords, |
| 606 | unsigned int value) |
| 607 | { |
Lynus Vaz | d37f1d8 | 2017-05-24 16:39:15 +0530 | [diff] [blame] | 608 | if (kgsl_is_register_offset(device, offsetwords)) |
| 609 | device->ftbl->regwrite(device, offsetwords, value); |
| 610 | else if (device->ftbl->gmu_regwrite && |
| 611 | kgsl_is_gmu_offset(device, offsetwords)) |
| 612 | device->ftbl->gmu_regwrite(device, offsetwords, value); |
| 613 | else |
| 614 | WARN(1, "Out of bounds register write: 0x%x\n", offsetwords); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 615 | } |
| 616 | |
Kyle Piefer | b1027b0 | 2017-02-10 13:58:58 -0800 | [diff] [blame] | 617 | static inline void kgsl_gmu_regread(struct kgsl_device *device, |
| 618 | unsigned int offsetwords, |
| 619 | unsigned int *value) |
| 620 | { |
| 621 | if (device->ftbl->gmu_regread) |
| 622 | device->ftbl->gmu_regread(device, offsetwords, value); |
| 623 | else |
Carter Cooper | 83454bf | 2017-03-20 11:26:04 -0600 | [diff] [blame] | 624 | *value = 0; |
Kyle Piefer | b1027b0 | 2017-02-10 13:58:58 -0800 | [diff] [blame] | 625 | } |
| 626 | |
| 627 | static inline void kgsl_gmu_regwrite(struct kgsl_device *device, |
| 628 | unsigned int offsetwords, |
| 629 | unsigned int value) |
| 630 | { |
| 631 | if (device->ftbl->gmu_regwrite) |
| 632 | device->ftbl->gmu_regwrite(device, offsetwords, value); |
| 633 | } |
| 634 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 635 | static inline void kgsl_regrmw(struct kgsl_device *device, |
| 636 | unsigned int offsetwords, |
| 637 | unsigned int mask, unsigned int bits) |
| 638 | { |
| 639 | unsigned int val = 0; |
| 640 | |
Lynus Vaz | d37f1d8 | 2017-05-24 16:39:15 +0530 | [diff] [blame] | 641 | kgsl_regread(device, offsetwords, &val); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 642 | val &= ~mask; |
Lynus Vaz | d37f1d8 | 2017-05-24 16:39:15 +0530 | [diff] [blame] | 643 | kgsl_regwrite(device, offsetwords, val | bits); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 644 | } |
| 645 | |
Kyle Piefer | dc0706c | 2017-04-13 13:17:50 -0700 | [diff] [blame] | 646 | static inline void kgsl_gmu_regrmw(struct kgsl_device *device, |
| 647 | unsigned int offsetwords, |
| 648 | unsigned int mask, unsigned int bits) |
| 649 | { |
| 650 | unsigned int val = 0; |
| 651 | |
| 652 | kgsl_gmu_regread(device, offsetwords, &val); |
| 653 | val &= ~mask; |
| 654 | kgsl_gmu_regwrite(device, offsetwords, val | bits); |
| 655 | } |
| 656 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 657 | static inline int kgsl_idle(struct kgsl_device *device) |
| 658 | { |
| 659 | return device->ftbl->idle(device); |
| 660 | } |
| 661 | |
| 662 | static inline unsigned int kgsl_gpuid(struct kgsl_device *device, |
| 663 | unsigned int *chipid) |
| 664 | { |
| 665 | return device->ftbl->gpuid(device, chipid); |
| 666 | } |
| 667 | |
| 668 | static inline int kgsl_create_device_sysfs_files(struct device *root, |
| 669 | const struct device_attribute **list) |
| 670 | { |
| 671 | int ret = 0, i; |
| 672 | |
| 673 | for (i = 0; list[i] != NULL; i++) |
| 674 | ret |= device_create_file(root, list[i]); |
| 675 | return ret; |
| 676 | } |
| 677 | |
| 678 | static inline void kgsl_remove_device_sysfs_files(struct device *root, |
| 679 | const struct device_attribute **list) |
| 680 | { |
| 681 | int i; |
| 682 | |
| 683 | for (i = 0; list[i] != NULL; i++) |
| 684 | device_remove_file(root, list[i]); |
| 685 | } |
| 686 | |
| 687 | static inline struct kgsl_device *kgsl_device_from_dev(struct device *dev) |
| 688 | { |
| 689 | int i; |
| 690 | |
| 691 | for (i = 0; i < KGSL_DEVICE_MAX; i++) { |
| 692 | if (kgsl_driver.devp[i] && kgsl_driver.devp[i]->dev == dev) |
| 693 | return kgsl_driver.devp[i]; |
| 694 | } |
| 695 | |
| 696 | return NULL; |
| 697 | } |
| 698 | |
| 699 | static inline int kgsl_state_is_awake(struct kgsl_device *device) |
| 700 | { |
George Shen | 6927d8f | 2017-07-19 11:38:10 -0700 | [diff] [blame] | 701 | struct gmu_device *gmu = &device->gmu; |
| 702 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 703 | if (device->state == KGSL_STATE_ACTIVE || |
| 704 | device->state == KGSL_STATE_AWARE) |
| 705 | return true; |
George Shen | 6927d8f | 2017-07-19 11:38:10 -0700 | [diff] [blame] | 706 | else if (kgsl_gmu_isenabled(device) && |
| 707 | test_bit(GMU_CLK_ON, &gmu->flags)) |
| 708 | return true; |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 709 | else |
| 710 | return false; |
| 711 | } |
| 712 | |
| 713 | int kgsl_readtimestamp(struct kgsl_device *device, void *priv, |
| 714 | enum kgsl_timestamp_type type, unsigned int *timestamp); |
| 715 | |
| 716 | int kgsl_check_timestamp(struct kgsl_device *device, |
| 717 | struct kgsl_context *context, unsigned int timestamp); |
| 718 | |
| 719 | int kgsl_device_platform_probe(struct kgsl_device *device); |
| 720 | |
| 721 | void kgsl_device_platform_remove(struct kgsl_device *device); |
| 722 | |
| 723 | const char *kgsl_pwrstate_to_str(unsigned int state); |
| 724 | |
| 725 | int kgsl_device_snapshot_init(struct kgsl_device *device); |
| 726 | void kgsl_device_snapshot(struct kgsl_device *device, |
Lynus Vaz | 43695aa | 2017-09-01 21:55:23 +0530 | [diff] [blame] | 727 | struct kgsl_context *context, bool gmu_fault); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 728 | void kgsl_device_snapshot_close(struct kgsl_device *device); |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 729 | |
| 730 | void kgsl_events_init(void); |
| 731 | void kgsl_events_exit(void); |
| 732 | |
Harshdeep Dhatt | 2e42f12 | 2017-05-31 17:27:19 -0600 | [diff] [blame] | 733 | void kgsl_context_detach(struct kgsl_context *context); |
| 734 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 735 | void kgsl_del_event_group(struct kgsl_event_group *group); |
| 736 | |
| 737 | void kgsl_add_event_group(struct kgsl_event_group *group, |
| 738 | struct kgsl_context *context, const char *name, |
| 739 | readtimestamp_func readtimestamp, void *priv); |
| 740 | |
| 741 | void kgsl_cancel_events_timestamp(struct kgsl_device *device, |
| 742 | struct kgsl_event_group *group, unsigned int timestamp); |
| 743 | void kgsl_cancel_events(struct kgsl_device *device, |
| 744 | struct kgsl_event_group *group); |
| 745 | void kgsl_cancel_event(struct kgsl_device *device, |
| 746 | struct kgsl_event_group *group, unsigned int timestamp, |
| 747 | kgsl_event_func func, void *priv); |
| 748 | bool kgsl_event_pending(struct kgsl_device *device, |
| 749 | struct kgsl_event_group *group, unsigned int timestamp, |
| 750 | kgsl_event_func func, void *priv); |
| 751 | int kgsl_add_event(struct kgsl_device *device, struct kgsl_event_group *group, |
| 752 | unsigned int timestamp, kgsl_event_func func, void *priv); |
| 753 | void kgsl_process_event_group(struct kgsl_device *device, |
| 754 | struct kgsl_event_group *group); |
| 755 | void kgsl_flush_event_group(struct kgsl_device *device, |
| 756 | struct kgsl_event_group *group); |
| 757 | void kgsl_process_event_groups(struct kgsl_device *device); |
| 758 | |
| 759 | void kgsl_context_destroy(struct kref *kref); |
| 760 | |
| 761 | int kgsl_context_init(struct kgsl_device_private *dev_priv, |
| 762 | struct kgsl_context *context); |
| 763 | |
| 764 | void kgsl_context_dump(struct kgsl_context *context); |
| 765 | |
| 766 | int kgsl_memfree_find_entry(pid_t ptname, uint64_t *gpuaddr, |
| 767 | uint64_t *size, uint64_t *flags, pid_t *pid); |
| 768 | |
| 769 | long kgsl_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); |
| 770 | |
| 771 | long kgsl_ioctl_copy_in(unsigned int kernel_cmd, unsigned int user_cmd, |
| 772 | unsigned long arg, unsigned char *ptr); |
| 773 | |
| 774 | long kgsl_ioctl_copy_out(unsigned int kernel_cmd, unsigned int user_cmd, |
| 775 | unsigned long arg, unsigned char *ptr); |
| 776 | |
Tarun Karra | 2b8b363 | 2016-11-14 16:38:27 -0800 | [diff] [blame] | 777 | void kgsl_sparse_bind(struct kgsl_process_private *private, |
| 778 | struct kgsl_drawobj_sparse *sparse); |
| 779 | |
Shrenuj Bansal | a419c79 | 2016-10-20 14:05:11 -0700 | [diff] [blame] | 780 | /** |
| 781 | * kgsl_context_put() - Release context reference count |
| 782 | * @context: Pointer to the KGSL context to be released |
| 783 | * |
| 784 | * Reduce the reference count on a KGSL context and destroy it if it is no |
| 785 | * longer needed |
| 786 | */ |
| 787 | static inline void |
| 788 | kgsl_context_put(struct kgsl_context *context) |
| 789 | { |
| 790 | if (context) |
| 791 | kref_put(&context->refcount, kgsl_context_destroy); |
| 792 | } |
| 793 | |
| 794 | /** |
| 795 | * kgsl_context_detached() - check if a context is detached |
| 796 | * @context: the context |
| 797 | * |
| 798 | * Check if a context has been destroyed by userspace and is only waiting |
| 799 | * for reference counts to go away. This check is used to weed out |
| 800 | * contexts that shouldn't use the gpu so NULL is considered detached. |
| 801 | */ |
| 802 | static inline bool kgsl_context_detached(struct kgsl_context *context) |
| 803 | { |
| 804 | return (context == NULL || test_bit(KGSL_CONTEXT_PRIV_DETACHED, |
| 805 | &context->priv)); |
| 806 | } |
| 807 | |
| 808 | /** |
| 809 | * kgsl_context_invalid() - check if a context is invalid |
| 810 | * @context: the context |
| 811 | * |
| 812 | * Check if a context has been invalidated by the kernel and may no |
| 813 | * longer use the GPU. |
| 814 | */ |
| 815 | static inline bool kgsl_context_invalid(struct kgsl_context *context) |
| 816 | { |
| 817 | return (context == NULL || test_bit(KGSL_CONTEXT_PRIV_INVALID, |
| 818 | &context->priv)); |
| 819 | } |
| 820 | |
| 821 | |
| 822 | /** |
| 823 | * kgsl_context_get() - get a pointer to a KGSL context |
| 824 | * @device: Pointer to the KGSL device that owns the context |
| 825 | * @id: Context ID |
| 826 | * |
| 827 | * Find the context associated with the given ID number, increase the reference |
| 828 | * count on it and return it. The caller must make sure that this call is |
| 829 | * paired with a kgsl_context_put. This function is for internal use because it |
| 830 | * doesn't validate the ownership of the context with the calling process - use |
| 831 | * kgsl_context_get_owner for that |
| 832 | */ |
| 833 | static inline struct kgsl_context *kgsl_context_get(struct kgsl_device *device, |
| 834 | uint32_t id) |
| 835 | { |
| 836 | int result = 0; |
| 837 | struct kgsl_context *context = NULL; |
| 838 | |
| 839 | read_lock(&device->context_lock); |
| 840 | |
| 841 | context = idr_find(&device->context_idr, id); |
| 842 | |
| 843 | /* Don't return a context that has been detached */ |
| 844 | if (kgsl_context_detached(context)) |
| 845 | context = NULL; |
| 846 | else |
| 847 | result = kref_get_unless_zero(&context->refcount); |
| 848 | |
| 849 | read_unlock(&device->context_lock); |
| 850 | |
| 851 | if (!result) |
| 852 | return NULL; |
| 853 | return context; |
| 854 | } |
| 855 | |
| 856 | /** |
| 857 | * _kgsl_context_get() - lightweight function to just increment the ref count |
| 858 | * @context: Pointer to the KGSL context |
| 859 | * |
| 860 | * Get a reference to the specified KGSL context structure. This is a |
| 861 | * lightweight way to just increase the refcount on a known context rather than |
| 862 | * walking through kgsl_context_get and searching the iterator |
| 863 | */ |
| 864 | static inline int _kgsl_context_get(struct kgsl_context *context) |
| 865 | { |
| 866 | int ret = 0; |
| 867 | |
| 868 | if (context) |
| 869 | ret = kref_get_unless_zero(&context->refcount); |
| 870 | |
| 871 | return ret; |
| 872 | } |
| 873 | |
| 874 | /** |
| 875 | * kgsl_context_get_owner() - get a pointer to a KGSL context in a specific |
| 876 | * process |
| 877 | * @dev_priv: Pointer to the process struct |
| 878 | * @id: Context ID to return |
| 879 | * |
| 880 | * Find the context associated with the given ID number, increase the reference |
| 881 | * count on it and return it. The caller must make sure that this call is |
| 882 | * paired with a kgsl_context_put. This function validates that the context id |
| 883 | * given is owned by the dev_priv instancet that is passed in. See |
| 884 | * kgsl_context_get for the internal version that doesn't do the check |
| 885 | */ |
| 886 | static inline struct kgsl_context *kgsl_context_get_owner( |
| 887 | struct kgsl_device_private *dev_priv, uint32_t id) |
| 888 | { |
| 889 | struct kgsl_context *context; |
| 890 | |
| 891 | context = kgsl_context_get(dev_priv->device, id); |
| 892 | |
| 893 | /* Verify that the context belongs to current calling fd. */ |
| 894 | if (context != NULL && context->dev_priv != dev_priv) { |
| 895 | kgsl_context_put(context); |
| 896 | return NULL; |
| 897 | } |
| 898 | |
| 899 | return context; |
| 900 | } |
| 901 | |
| 902 | /** |
| 903 | * kgsl_process_private_get() - increment the refcount on a |
| 904 | * kgsl_process_private struct |
| 905 | * @process: Pointer to the KGSL process_private |
| 906 | * |
| 907 | * Returns 0 if the structure is invalid and a reference count could not be |
| 908 | * obtained, nonzero otherwise. |
| 909 | */ |
| 910 | static inline int kgsl_process_private_get(struct kgsl_process_private *process) |
| 911 | { |
| 912 | int ret = 0; |
| 913 | |
| 914 | if (process != NULL) |
| 915 | ret = kref_get_unless_zero(&process->refcount); |
| 916 | return ret; |
| 917 | } |
| 918 | |
| 919 | void kgsl_process_private_put(struct kgsl_process_private *private); |
| 920 | |
| 921 | |
| 922 | struct kgsl_process_private *kgsl_process_private_find(pid_t pid); |
| 923 | |
| 924 | /** |
| 925 | * kgsl_property_read_u32() - Read a u32 property from the device tree |
| 926 | * @device: Pointer to the KGSL device |
| 927 | * @prop: String name of the property to query |
| 928 | * @ptr: Pointer to the variable to store the property |
| 929 | */ |
| 930 | static inline int kgsl_property_read_u32(struct kgsl_device *device, |
| 931 | const char *prop, unsigned int *ptr) |
| 932 | { |
| 933 | return of_property_read_u32(device->pdev->dev.of_node, prop, ptr); |
| 934 | } |
| 935 | |
| 936 | /** |
| 937 | * kgsl_sysfs_store() - parse a string from a sysfs store function |
| 938 | * @buf: Incoming string to parse |
| 939 | * @ptr: Pointer to an unsigned int to store the value |
| 940 | */ |
| 941 | static inline int kgsl_sysfs_store(const char *buf, unsigned int *ptr) |
| 942 | { |
| 943 | unsigned int val; |
| 944 | int rc; |
| 945 | |
| 946 | rc = kstrtou32(buf, 0, &val); |
| 947 | if (rc) |
| 948 | return rc; |
| 949 | |
| 950 | if (ptr) |
| 951 | *ptr = val; |
| 952 | |
| 953 | return 0; |
| 954 | } |
| 955 | |
| 956 | /* |
| 957 | * A helper macro to print out "not enough memory functions" - this |
| 958 | * makes it easy to standardize the messages as well as cut down on |
| 959 | * the number of strings in the binary |
| 960 | */ |
| 961 | #define SNAPSHOT_ERR_NOMEM(_d, _s) \ |
| 962 | KGSL_DRV_ERR((_d), \ |
| 963 | "snapshot: not enough snapshot memory for section %s\n", (_s)) |
| 964 | |
| 965 | /** |
| 966 | * struct kgsl_snapshot_registers - list of registers to snapshot |
| 967 | * @regs: Pointer to an array of register ranges |
| 968 | * @count: Number of entries in the array |
| 969 | */ |
| 970 | struct kgsl_snapshot_registers { |
| 971 | const unsigned int *regs; |
| 972 | unsigned int count; |
| 973 | }; |
| 974 | |
| 975 | size_t kgsl_snapshot_dump_registers(struct kgsl_device *device, u8 *buf, |
| 976 | size_t remain, void *priv); |
| 977 | |
| 978 | void kgsl_snapshot_indexed_registers(struct kgsl_device *device, |
| 979 | struct kgsl_snapshot *snapshot, unsigned int index, |
| 980 | unsigned int data, unsigned int start, unsigned int count); |
| 981 | |
| 982 | int kgsl_snapshot_get_object(struct kgsl_snapshot *snapshot, |
| 983 | struct kgsl_process_private *process, uint64_t gpuaddr, |
| 984 | uint64_t size, unsigned int type); |
| 985 | |
| 986 | int kgsl_snapshot_have_object(struct kgsl_snapshot *snapshot, |
| 987 | struct kgsl_process_private *process, |
| 988 | uint64_t gpuaddr, uint64_t size); |
| 989 | |
| 990 | struct adreno_ib_object_list; |
| 991 | |
| 992 | int kgsl_snapshot_add_ib_obj_list(struct kgsl_snapshot *snapshot, |
| 993 | struct adreno_ib_object_list *ib_obj_list); |
| 994 | |
| 995 | void kgsl_snapshot_add_section(struct kgsl_device *device, u16 id, |
| 996 | struct kgsl_snapshot *snapshot, |
| 997 | size_t (*func)(struct kgsl_device *, u8 *, size_t, void *), |
| 998 | void *priv); |
| 999 | |
| 1000 | /** |
| 1001 | * struct kgsl_pwr_limit - limit structure for each client |
| 1002 | * @node: Local list node for the limits list |
| 1003 | * @level: requested power level |
| 1004 | * @device: pointer to the device structure |
| 1005 | */ |
| 1006 | struct kgsl_pwr_limit { |
| 1007 | struct list_head node; |
| 1008 | unsigned int level; |
| 1009 | struct kgsl_device *device; |
| 1010 | }; |
| 1011 | |
| 1012 | #endif /* __KGSL_DEVICE_H */ |