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2024-01-04 1543e317f1da31b75942316931e8f491a8920811 
 kernel/drivers/gpu/drm/etnaviv/etnaviv_drv.c
....@@ -4,8 +4,17 @@
44  */
55 
66 #include <linux/component.h>
7
+#include <linux/dma-mapping.h>
8
+#include <linux/module.h>
79 #include <linux/of_platform.h>
10
+#include <linux/uaccess.h>
11
+
12
+#include <drm/drm_debugfs.h>
13
+#include <drm/drm_drv.h>
14
+#include <drm/drm_file.h>
15
+#include <drm/drm_ioctl.h>
816 #include <drm/drm_of.h>
17
+#include <drm/drm_prime.h>
918 
1019 #include "etnaviv_cmdbuf.h"
1120 #include "etnaviv_drv.h"
....@@ -41,26 +50,38 @@
4150 {
4251 	struct etnaviv_drm_private *priv = dev->dev_private;
4352 	struct etnaviv_file_private *ctx;
44
-	int i;
53
+	int ret, i;
4554 
4655 	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
4756 	if (!ctx)
4857 		return -ENOMEM;
4958 
59
+	ctx->mmu = etnaviv_iommu_context_init(priv->mmu_global,
60
+					      priv->cmdbuf_suballoc);
61
+	if (!ctx->mmu) {
62
+		ret = -ENOMEM;
63
+		goto out_free;
64
+	}
65
+
5066 	for (i = 0; i < ETNA_MAX_PIPES; i++) {
5167 		struct etnaviv_gpu *gpu = priv->gpu[i];
52
-		struct drm_sched_rq *rq;
68
+		struct drm_gpu_scheduler *sched;
5369 
5470 		if (gpu) {
55
-			rq = &gpu->sched.sched_rq[DRM_SCHED_PRIORITY_NORMAL];
71
+			sched = &gpu->sched;
5672 			drm_sched_entity_init(&ctx->sched_entity[i],
57
-					      &rq, 1, NULL);
73
+					      DRM_SCHED_PRIORITY_NORMAL, &sched,
74
+					      1, NULL);
5875 			}
5976 	}
6077 
6178 	file->driver_priv = ctx;
6279 
6380 	return 0;
81
+
82
+out_free:
83
+	kfree(ctx);
84
+	return ret;
6485 }
6586 
6687 static void etnaviv_postclose(struct drm_device *dev, struct drm_file *file)
....@@ -72,15 +93,11 @@
7293 	for (i = 0; i < ETNA_MAX_PIPES; i++) {
7394 		struct etnaviv_gpu *gpu = priv->gpu[i];
7495 
75
-		if (gpu) {
76
-			mutex_lock(&gpu->lock);
77
-			if (gpu->lastctx == ctx)
78
-				gpu->lastctx = NULL;
79
-			mutex_unlock(&gpu->lock);
80
-
96
+		if (gpu)
8197 			drm_sched_entity_destroy(&ctx->sched_entity[i]);
82
-		}
8398 	}
99
+
100
+	etnaviv_iommu_context_put(ctx->mmu);
84101 
85102 	kfree(ctx);
86103 }
....@@ -113,12 +130,29 @@
113130 static int etnaviv_mmu_show(struct etnaviv_gpu *gpu, struct seq_file *m)
114131 {
115132 	struct drm_printer p = drm_seq_file_printer(m);
133
+	struct etnaviv_iommu_context *mmu_context;
116134 
117135 	seq_printf(m, "Active Objects (%s):\n", dev_name(gpu->dev));
118136 
119
-	mutex_lock(&gpu->mmu->lock);
120
-	drm_mm_print(&gpu->mmu->mm, &p);
121
-	mutex_unlock(&gpu->mmu->lock);
137
+	/*
138
+	 * Lock the GPU to avoid a MMU context switch just now and elevate
139
+	 * the refcount of the current context to avoid it disappearing from
140
+	 * under our feet.
141
+	 */
142
+	mutex_lock(&gpu->lock);
143
+	mmu_context = gpu->mmu_context;
144
+	if (mmu_context)
145
+		etnaviv_iommu_context_get(mmu_context);
146
+	mutex_unlock(&gpu->lock);
147
+
148
+	if (!mmu_context)
149
+		return 0;
150
+
151
+	mutex_lock(&mmu_context->lock);
152
+	drm_mm_print(&mmu_context->mm, &p);
153
+	mutex_unlock(&mmu_context->lock);
154
+
155
+	etnaviv_iommu_context_put(mmu_context);
122156 
123157 	return 0;
124158 }
....@@ -197,21 +231,11 @@
197231 		{"ring", show_each_gpu, 0, etnaviv_ring_show},
198232 };
199233 
200
-static int etnaviv_debugfs_init(struct drm_minor *minor)
234
+static void etnaviv_debugfs_init(struct drm_minor *minor)
201235 {
202
-	struct drm_device *dev = minor->dev;
203
-	int ret;
204
-
205
-	ret = drm_debugfs_create_files(etnaviv_debugfs_list,
206
-			ARRAY_SIZE(etnaviv_debugfs_list),
207
-			minor->debugfs_root, minor);
208
-
209
-	if (ret) {
210
-		dev_err(dev->dev, "could not install etnaviv_debugfs_list\n");
211
-		return ret;
212
-	}
213
-
214
-	return ret;
236
+	drm_debugfs_create_files(etnaviv_debugfs_list,
237
+				 ARRAY_SIZE(etnaviv_debugfs_list),
238
+				 minor->debugfs_root, minor);
215239 }
216240 #endif
217241 
....@@ -249,11 +273,6 @@
249273 			args->flags, &args->handle);
250274 }
251275 
252
-#define TS(t) ((struct timespec){ \
253
-	.tv_sec = (t).tv_sec, \
254
-	.tv_nsec = (t).tv_nsec \
255
-})
256
-
257276 static int etnaviv_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
258277 		struct drm_file *file)
259278 {
....@@ -268,9 +287,9 @@
268287 	if (!obj)
269288 		return -ENOENT;
270289 
271
-	ret = etnaviv_gem_cpu_prep(obj, args->op, &TS(args->timeout));
290
+	ret = etnaviv_gem_cpu_prep(obj, args->op, &args->timeout);
272291 
273
-	drm_gem_object_put_unlocked(obj);
292
+	drm_gem_object_put(obj);
274293 
275294 	return ret;
276295 }
....@@ -291,7 +310,7 @@
291310 
292311 	ret = etnaviv_gem_cpu_fini(obj);
293312 
294
-	drm_gem_object_put_unlocked(obj);
313
+	drm_gem_object_put(obj);
295314 
296315 	return ret;
297316 }
....@@ -311,7 +330,7 @@
311330 		return -ENOENT;
312331 
313332 	ret = etnaviv_gem_mmap_offset(obj, &args->offset);
314
-	drm_gem_object_put_unlocked(obj);
333
+	drm_gem_object_put(obj);
315334 
316335 	return ret;
317336 }
....@@ -321,7 +340,7 @@
321340 {
322341 	struct drm_etnaviv_wait_fence *args = data;
323342 	struct etnaviv_drm_private *priv = dev->dev_private;
324
-	struct timespec *timeout = &TS(args->timeout);
343
+	struct drm_etnaviv_timespec *timeout = &args->timeout;
325344 	struct etnaviv_gpu *gpu;
326345 
327346 	if (args->flags & ~(ETNA_WAIT_NONBLOCK))
....@@ -345,7 +364,6 @@
345364 	struct drm_file *file)
346365 {
347366 	struct drm_etnaviv_gem_userptr *args = data;
348
-	int access;
349367 
350368 	if (args->flags & ~(ETNA_USERPTR_READ|ETNA_USERPTR_WRITE) ||
351369 	    args->flags == 0)
....@@ -357,12 +375,7 @@
357375 	    args->user_ptr & ~PAGE_MASK)
358376 		return -EINVAL;
359377 
360
-	if (args->flags & ETNA_USERPTR_WRITE)
361
-		access = VERIFY_WRITE;
362
-	else
363
-		access = VERIFY_READ;
364
-
365
-	if (!access_ok(access, (void __user *)(unsigned long)args->user_ptr,
378
+	if (!access_ok((void __user *)(unsigned long)args->user_ptr,
366379 		       args->user_size))
367380 		return -EFAULT;
368381 
....@@ -376,7 +389,7 @@
376389 {
377390 	struct etnaviv_drm_private *priv = dev->dev_private;
378391 	struct drm_etnaviv_gem_wait *args = data;
379
-	struct timespec *timeout = &TS(args->timeout);
392
+	struct drm_etnaviv_timespec *timeout = &args->timeout;
380393 	struct drm_gem_object *obj;
381394 	struct etnaviv_gpu *gpu;
382395 	int ret;
....@@ -400,7 +413,7 @@
400413 
401414 	ret = etnaviv_gem_wait_bo(gpu, obj, timeout);
402415 
403
-	drm_gem_object_put_unlocked(obj);
416
+	drm_gem_object_put(obj);
404417 
405418 	return ret;
406419 }
....@@ -442,17 +455,17 @@
442455 static const struct drm_ioctl_desc etnaviv_ioctls[] = {
443456 #define ETNA_IOCTL(n, func, flags) \
444457 	DRM_IOCTL_DEF_DRV(ETNAVIV_##n, etnaviv_ioctl_##func, flags)
445
-	ETNA_IOCTL(GET_PARAM,    get_param,    DRM_AUTH|DRM_RENDER_ALLOW),
446
-	ETNA_IOCTL(GEM_NEW,      gem_new,      DRM_AUTH|DRM_RENDER_ALLOW),
447
-	ETNA_IOCTL(GEM_INFO,     gem_info,     DRM_AUTH|DRM_RENDER_ALLOW),
448
-	ETNA_IOCTL(GEM_CPU_PREP, gem_cpu_prep, DRM_AUTH|DRM_RENDER_ALLOW),
449
-	ETNA_IOCTL(GEM_CPU_FINI, gem_cpu_fini, DRM_AUTH|DRM_RENDER_ALLOW),
450
-	ETNA_IOCTL(GEM_SUBMIT,   gem_submit,   DRM_AUTH|DRM_RENDER_ALLOW),
451
-	ETNA_IOCTL(WAIT_FENCE,   wait_fence,   DRM_AUTH|DRM_RENDER_ALLOW),
452
-	ETNA_IOCTL(GEM_USERPTR,  gem_userptr,  DRM_AUTH|DRM_RENDER_ALLOW),
453
-	ETNA_IOCTL(GEM_WAIT,     gem_wait,     DRM_AUTH|DRM_RENDER_ALLOW),
454
-	ETNA_IOCTL(PM_QUERY_DOM, pm_query_dom, DRM_AUTH|DRM_RENDER_ALLOW),
455
-	ETNA_IOCTL(PM_QUERY_SIG, pm_query_sig, DRM_AUTH|DRM_RENDER_ALLOW),
458
+	ETNA_IOCTL(GET_PARAM,    get_param,    DRM_RENDER_ALLOW),
459
+	ETNA_IOCTL(GEM_NEW,      gem_new,      DRM_RENDER_ALLOW),
460
+	ETNA_IOCTL(GEM_INFO,     gem_info,     DRM_RENDER_ALLOW),
461
+	ETNA_IOCTL(GEM_CPU_PREP, gem_cpu_prep, DRM_RENDER_ALLOW),
462
+	ETNA_IOCTL(GEM_CPU_FINI, gem_cpu_fini, DRM_RENDER_ALLOW),
463
+	ETNA_IOCTL(GEM_SUBMIT,   gem_submit,   DRM_RENDER_ALLOW),
464
+	ETNA_IOCTL(WAIT_FENCE,   wait_fence,   DRM_RENDER_ALLOW),
465
+	ETNA_IOCTL(GEM_USERPTR,  gem_userptr,  DRM_RENDER_ALLOW),
466
+	ETNA_IOCTL(GEM_WAIT,     gem_wait,     DRM_RENDER_ALLOW),
467
+	ETNA_IOCTL(PM_QUERY_DOM, pm_query_dom, DRM_RENDER_ALLOW),
468
+	ETNA_IOCTL(PM_QUERY_SIG, pm_query_sig, DRM_RENDER_ALLOW),
456469 };
457470 
458471 static const struct vm_operations_struct vm_ops = {
....@@ -474,18 +487,13 @@
474487 };
475488 
476489 static struct drm_driver etnaviv_drm_driver = {
477
-	.driver_features    = DRIVER_GEM |
478
-				DRIVER_PRIME |
479
-				DRIVER_RENDER,
490
+	.driver_features    = DRIVER_GEM | DRIVER_RENDER,
480491 	.open               = etnaviv_open,
481492 	.postclose           = etnaviv_postclose,
482493 	.gem_free_object_unlocked = etnaviv_gem_free_object,
483494 	.gem_vm_ops         = &vm_ops,
484495 	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
485496 	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
486
-	.gem_prime_export   = drm_gem_prime_export,
487
-	.gem_prime_import   = drm_gem_prime_import,
488
-	.gem_prime_res_obj  = etnaviv_gem_prime_res_obj,
489497 	.gem_prime_pin      = etnaviv_gem_prime_pin,
490498 	.gem_prime_unpin    = etnaviv_gem_prime_unpin,
491499 	.gem_prime_get_sg_table = etnaviv_gem_prime_get_sg_table,
....@@ -503,7 +511,7 @@
503511 	.desc               = "etnaviv DRM",
504512 	.date               = "20151214",
505513 	.major              = 1,
506
-	.minor              = 2,
514
+	.minor              = 3,
507515 };
508516 
509517 /*
....@@ -523,7 +531,7 @@
523531 	if (!priv) {
524532 		dev_err(dev, "failed to allocate private data\n");
525533 		ret = -ENOMEM;
526
-		goto out_unref;
534
+		goto out_put;
527535 	}
528536 	drm->dev_private = priv;
529537 
....@@ -533,27 +541,37 @@
533541 	mutex_init(&priv->gem_lock);
534542 	INIT_LIST_HEAD(&priv->gem_list);
535543 	priv->num_gpus = 0;
544
+	priv->shm_gfp_mask = GFP_HIGHUSER | __GFP_RETRY_MAYFAIL | __GFP_NOWARN;
545
+
546
+	priv->cmdbuf_suballoc = etnaviv_cmdbuf_suballoc_new(drm->dev);
547
+	if (IS_ERR(priv->cmdbuf_suballoc)) {
548
+		dev_err(drm->dev, "Failed to create cmdbuf suballocator\n");
549
+		ret = PTR_ERR(priv->cmdbuf_suballoc);
550
+		goto out_free_priv;
551
+	}
536552 
537553 	dev_set_drvdata(dev, drm);
538554 
539555 	ret = component_bind_all(dev, drm);
540556 	if (ret < 0)
541
-		goto out_bind;
557
+		goto out_destroy_suballoc;
542558 
543559 	load_gpu(drm);
544560 
545561 	ret = drm_dev_register(drm, 0);
546562 	if (ret)
547
-		goto out_register;
563
+		goto out_unbind;
548564 
549565 	return 0;
550566 
551
-out_register:
567
+out_unbind:
552568 	component_unbind_all(dev, drm);
553
-out_bind:
569
+out_destroy_suballoc:
570
+	etnaviv_cmdbuf_suballoc_destroy(priv->cmdbuf_suballoc);
571
+out_free_priv:
554572 	kfree(priv);
555
-out_unref:
556
-	drm_dev_unref(drm);
573
+out_put:
574
+	drm_dev_put(drm);
557575 
558576 	return ret;
559577 }
....@@ -569,10 +587,12 @@
569587 
570588 	dev->dma_parms = NULL;
571589 
590
+	etnaviv_cmdbuf_suballoc_destroy(priv->cmdbuf_suballoc);
591
+
572592 	drm->dev_private = NULL;
573593 	kfree(priv);
574594 
575
-	drm_dev_unref(drm);
595
+	drm_dev_put(drm);
576596 }
577597 
578598 static const struct component_master_ops etnaviv_master_ops = {
....@@ -706,7 +726,7 @@
706726 module_exit(etnaviv_exit);
707727 
708728 MODULE_AUTHOR("Christian Gmeiner <christian.gmeiner@gmail.com>");
709
-MODULE_AUTHOR("Russell King <rmk+kernel@arm.linux.org.uk>");
729
+MODULE_AUTHOR("Russell King <rmk+kernel@armlinux.org.uk>");
710730 MODULE_AUTHOR("Lucas Stach <l.stach@pengutronix.de>");
711731 MODULE_DESCRIPTION("etnaviv DRM Driver");
712732 MODULE_LICENSE("GPL v2");