1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
4 * Copyright (C) 2013 Red Hat
8 #include <linux/dma-mapping.h>
9 #include <linux/kthread.h>
10 #include <linux/uaccess.h>
11 #include <uapi/linux/sched/types.h>
13 #include <drm/drm_drv.h>
14 #include <drm/drm_file.h>
15 #include <drm/drm_ioctl.h>
16 #include <drm/drm_irq.h>
17 #include <drm/drm_prime.h>
18 #include <drm/drm_of.h>
19 #include <drm/drm_vblank.h>
22 #include "msm_debugfs.h"
23 #include "msm_fence.h"
27 #include "adreno/adreno_gpu.h"
31 * - 1.0.0 - initial interface
32 * - 1.1.0 - adds madvise, and support for submits with > 4 cmd buffers
33 * - 1.2.0 - adds explicit fence support for submit ioctl
34 * - 1.3.0 - adds GMEM_BASE + NR_RINGS params, SUBMITQUEUE_NEW +
35 * SUBMITQUEUE_CLOSE ioctls, and MSM_INFO_IOVA flag for
37 * - 1.4.0 - softpin, MSM_RELOC_BO_DUMP, and GEM_INFO support to set/get
38 * GEM object's debug name
39 * - 1.5.0 - Add SUBMITQUERY_QUERY ioctl
41 #define MSM_VERSION_MAJOR 1
42 #define MSM_VERSION_MINOR 5
43 #define MSM_VERSION_PATCHLEVEL 0
45 static const struct drm_mode_config_funcs mode_config_funcs = {
46 .fb_create = msm_framebuffer_create,
47 .output_poll_changed = drm_fb_helper_output_poll_changed,
48 .atomic_check = drm_atomic_helper_check,
49 .atomic_commit = drm_atomic_helper_commit,
52 static const struct drm_mode_config_helper_funcs mode_config_helper_funcs = {
53 .atomic_commit_tail = msm_atomic_commit_tail,
56 #ifdef CONFIG_DRM_MSM_REGISTER_LOGGING
57 static bool reglog = false;
58 MODULE_PARM_DESC(reglog, "Enable register read/write logging");
59 module_param(reglog, bool, 0600);
64 #ifdef CONFIG_DRM_FBDEV_EMULATION
65 static bool fbdev = true;
66 MODULE_PARM_DESC(fbdev, "Enable fbdev compat layer");
67 module_param(fbdev, bool, 0600);
70 static char *vram = "16m";
71 MODULE_PARM_DESC(vram, "Configure VRAM size (for devices without IOMMU/GPUMMU)");
72 module_param(vram, charp, 0);
74 bool dumpstate = false;
75 MODULE_PARM_DESC(dumpstate, "Dump KMS state on errors");
76 module_param(dumpstate, bool, 0600);
78 static bool modeset = true;
79 MODULE_PARM_DESC(modeset, "Use kernel modesetting [KMS] (1=on (default), 0=disable)");
80 module_param(modeset, bool, 0600);
86 struct clk *msm_clk_bulk_get_clock(struct clk_bulk_data *bulk, int count,
92 snprintf(n, sizeof(n), "%s_clk", name);
94 for (i = 0; bulk && i < count; i++) {
95 if (!strcmp(bulk[i].id, name) || !strcmp(bulk[i].id, n))
103 struct clk *msm_clk_get(struct platform_device *pdev, const char *name)
108 clk = devm_clk_get(&pdev->dev, name);
109 if (!IS_ERR(clk) || PTR_ERR(clk) == -EPROBE_DEFER)
112 snprintf(name2, sizeof(name2), "%s_clk", name);
114 clk = devm_clk_get(&pdev->dev, name2);
116 dev_warn(&pdev->dev, "Using legacy clk name binding. Use "
117 "\"%s\" instead of \"%s\"\n", name, name2);
122 void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
125 struct resource *res;
130 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
132 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
135 DRM_DEV_ERROR(&pdev->dev, "failed to get memory resource: %s\n", name);
136 return ERR_PTR(-EINVAL);
139 size = resource_size(res);
141 ptr = devm_ioremap(&pdev->dev, res->start, size);
143 DRM_DEV_ERROR(&pdev->dev, "failed to ioremap: %s\n", name);
144 return ERR_PTR(-ENOMEM);
148 printk(KERN_DEBUG "IO:region %s %p %08lx\n", dbgname, ptr, size);
153 void msm_writel(u32 data, void __iomem *addr)
156 printk(KERN_DEBUG "IO:W %p %08x\n", addr, data);
160 u32 msm_readl(const void __iomem *addr)
162 u32 val = readl(addr);
164 pr_err("IO:R %p %08x\n", addr, val);
168 struct msm_vblank_work {
169 struct work_struct work;
172 struct msm_drm_private *priv;
175 static void vblank_ctrl_worker(struct work_struct *work)
177 struct msm_vblank_work *vbl_work = container_of(work,
178 struct msm_vblank_work, work);
179 struct msm_drm_private *priv = vbl_work->priv;
180 struct msm_kms *kms = priv->kms;
182 if (vbl_work->enable)
183 kms->funcs->enable_vblank(kms, priv->crtcs[vbl_work->crtc_id]);
185 kms->funcs->disable_vblank(kms, priv->crtcs[vbl_work->crtc_id]);
190 static int vblank_ctrl_queue_work(struct msm_drm_private *priv,
191 int crtc_id, bool enable)
193 struct msm_vblank_work *vbl_work;
195 vbl_work = kzalloc(sizeof(*vbl_work), GFP_ATOMIC);
199 INIT_WORK(&vbl_work->work, vblank_ctrl_worker);
201 vbl_work->crtc_id = crtc_id;
202 vbl_work->enable = enable;
203 vbl_work->priv = priv;
205 queue_work(priv->wq, &vbl_work->work);
210 static int msm_drm_uninit(struct device *dev)
212 struct platform_device *pdev = to_platform_device(dev);
213 struct drm_device *ddev = platform_get_drvdata(pdev);
214 struct msm_drm_private *priv = ddev->dev_private;
215 struct msm_kms *kms = priv->kms;
216 struct msm_mdss *mdss = priv->mdss;
220 * Shutdown the hw if we're far enough along where things might be on.
221 * If we run this too early, we'll end up panicking in any variety of
222 * places. Since we don't register the drm device until late in
223 * msm_drm_init, drm_dev->registered is used as an indicator that the
224 * shutdown will be successful.
226 if (ddev->registered) {
227 drm_dev_unregister(ddev);
228 drm_atomic_helper_shutdown(ddev);
231 /* We must cancel and cleanup any pending vblank enable/disable
232 * work before drm_irq_uninstall() to avoid work re-enabling an
233 * irq after uninstall has disabled it.
236 flush_workqueue(priv->wq);
238 /* clean up event worker threads */
239 for (i = 0; i < priv->num_crtcs; i++) {
240 if (priv->event_thread[i].thread) {
241 kthread_destroy_worker(&priv->event_thread[i].worker);
242 priv->event_thread[i].thread = NULL;
246 msm_gem_shrinker_cleanup(ddev);
248 drm_kms_helper_poll_fini(ddev);
250 msm_perf_debugfs_cleanup(priv);
251 msm_rd_debugfs_cleanup(priv);
253 #ifdef CONFIG_DRM_FBDEV_EMULATION
254 if (fbdev && priv->fbdev)
255 msm_fbdev_free(ddev);
258 drm_mode_config_cleanup(ddev);
260 pm_runtime_get_sync(dev);
261 drm_irq_uninstall(ddev);
262 pm_runtime_put_sync(dev);
264 if (kms && kms->funcs)
265 kms->funcs->destroy(kms);
267 if (priv->vram.paddr) {
268 unsigned long attrs = DMA_ATTR_NO_KERNEL_MAPPING;
269 drm_mm_takedown(&priv->vram.mm);
270 dma_free_attrs(dev, priv->vram.size, NULL,
271 priv->vram.paddr, attrs);
274 component_unbind_all(dev, ddev);
276 if (mdss && mdss->funcs)
277 mdss->funcs->destroy(ddev);
279 ddev->dev_private = NULL;
282 destroy_workqueue(priv->wq);
292 static int get_mdp_ver(struct platform_device *pdev)
294 struct device *dev = &pdev->dev;
296 return (int) (unsigned long) of_device_get_match_data(dev);
299 #include <linux/of_address.h>
301 bool msm_use_mmu(struct drm_device *dev)
303 struct msm_drm_private *priv = dev->dev_private;
305 /* a2xx comes with its own MMU */
306 return priv->is_a2xx || iommu_present(&platform_bus_type);
309 static int msm_init_vram(struct drm_device *dev)
311 struct msm_drm_private *priv = dev->dev_private;
312 struct device_node *node;
313 unsigned long size = 0;
316 /* In the device-tree world, we could have a 'memory-region'
317 * phandle, which gives us a link to our "vram". Allocating
318 * is all nicely abstracted behind the dma api, but we need
319 * to know the entire size to allocate it all in one go. There
321 * 1) device with no IOMMU, in which case we need exclusive
322 * access to a VRAM carveout big enough for all gpu
324 * 2) device with IOMMU, but where the bootloader puts up
325 * a splash screen. In this case, the VRAM carveout
326 * need only be large enough for fbdev fb. But we need
327 * exclusive access to the buffer to avoid the kernel
328 * using those pages for other purposes (which appears
329 * as corruption on screen before we have a chance to
330 * load and do initial modeset)
333 node = of_parse_phandle(dev->dev->of_node, "memory-region", 0);
336 ret = of_address_to_resource(node, 0, &r);
340 size = r.end - r.start;
341 DRM_INFO("using VRAM carveout: %lx@%pa\n", size, &r.start);
343 /* if we have no IOMMU, then we need to use carveout allocator.
344 * Grab the entire CMA chunk carved out in early startup in
347 } else if (!msm_use_mmu(dev)) {
348 DRM_INFO("using %s VRAM carveout\n", vram);
349 size = memparse(vram, NULL);
353 unsigned long attrs = 0;
356 priv->vram.size = size;
358 drm_mm_init(&priv->vram.mm, 0, (size >> PAGE_SHIFT) - 1);
359 spin_lock_init(&priv->vram.lock);
361 attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
362 attrs |= DMA_ATTR_WRITE_COMBINE;
364 /* note that for no-kernel-mapping, the vaddr returned
365 * is bogus, but non-null if allocation succeeded:
367 p = dma_alloc_attrs(dev->dev, size,
368 &priv->vram.paddr, GFP_KERNEL, attrs);
370 DRM_DEV_ERROR(dev->dev, "failed to allocate VRAM\n");
371 priv->vram.paddr = 0;
375 DRM_DEV_INFO(dev->dev, "VRAM: %08x->%08x\n",
376 (uint32_t)priv->vram.paddr,
377 (uint32_t)(priv->vram.paddr + size));
383 static int msm_drm_init(struct device *dev, struct drm_driver *drv)
385 struct platform_device *pdev = to_platform_device(dev);
386 struct drm_device *ddev;
387 struct msm_drm_private *priv;
389 struct msm_mdss *mdss;
391 struct sched_param param;
393 ddev = drm_dev_alloc(drv, dev);
395 DRM_DEV_ERROR(dev, "failed to allocate drm_device\n");
396 return PTR_ERR(ddev);
399 platform_set_drvdata(pdev, ddev);
401 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
404 goto err_put_drm_dev;
407 ddev->dev_private = priv;
410 switch (get_mdp_ver(pdev)) {
412 ret = mdp5_mdss_init(ddev);
415 ret = dpu_mdss_init(ddev);
426 priv->wq = alloc_ordered_workqueue("msm", 0);
428 INIT_WORK(&priv->free_work, msm_gem_free_work);
429 init_llist_head(&priv->free_list);
431 INIT_LIST_HEAD(&priv->inactive_list);
433 drm_mode_config_init(ddev);
435 /* Bind all our sub-components: */
436 ret = component_bind_all(dev, ddev);
438 goto err_destroy_mdss;
440 ret = msm_init_vram(ddev);
444 if (!dev->dma_parms) {
445 dev->dma_parms = devm_kzalloc(dev, sizeof(*dev->dma_parms),
447 if (!dev->dma_parms) {
452 dma_set_max_seg_size(dev, DMA_BIT_MASK(32));
454 msm_gem_shrinker_init(ddev);
456 switch (get_mdp_ver(pdev)) {
458 kms = mdp4_kms_init(ddev);
462 kms = mdp5_kms_init(ddev);
465 kms = dpu_kms_init(ddev);
469 /* valid only for the dummy headless case, where of_node=NULL */
470 WARN_ON(dev->of_node);
476 DRM_DEV_ERROR(dev, "failed to load kms\n");
482 /* Enable normalization of plane zpos */
483 ddev->mode_config.normalize_zpos = true;
487 ret = kms->funcs->hw_init(kms);
489 DRM_DEV_ERROR(dev, "kms hw init failed: %d\n", ret);
494 ddev->mode_config.funcs = &mode_config_funcs;
495 ddev->mode_config.helper_private = &mode_config_helper_funcs;
498 * this priority was found during empiric testing to have appropriate
499 * realtime scheduling to process display updates and interact with
500 * other real time and normal priority task
502 param.sched_priority = 16;
503 for (i = 0; i < priv->num_crtcs; i++) {
504 /* initialize event thread */
505 priv->event_thread[i].crtc_id = priv->crtcs[i]->base.id;
506 kthread_init_worker(&priv->event_thread[i].worker);
507 priv->event_thread[i].dev = ddev;
508 priv->event_thread[i].thread =
509 kthread_run(kthread_worker_fn,
510 &priv->event_thread[i].worker,
511 "crtc_event:%d", priv->event_thread[i].crtc_id);
512 if (IS_ERR(priv->event_thread[i].thread)) {
513 DRM_DEV_ERROR(dev, "failed to create crtc_event kthread\n");
514 priv->event_thread[i].thread = NULL;
518 ret = sched_setscheduler(priv->event_thread[i].thread,
521 dev_warn(dev, "event_thread set priority failed:%d\n",
525 ret = drm_vblank_init(ddev, priv->num_crtcs);
527 DRM_DEV_ERROR(dev, "failed to initialize vblank\n");
532 pm_runtime_get_sync(dev);
533 ret = drm_irq_install(ddev, kms->irq);
534 pm_runtime_put_sync(dev);
536 DRM_DEV_ERROR(dev, "failed to install IRQ handler\n");
541 ret = drm_dev_register(ddev, 0);
545 drm_mode_config_reset(ddev);
547 #ifdef CONFIG_DRM_FBDEV_EMULATION
549 priv->fbdev = msm_fbdev_init(ddev);
552 ret = msm_debugfs_late_init(ddev);
556 drm_kms_helper_poll_init(ddev);
564 if (mdss && mdss->funcs)
565 mdss->funcs->destroy(ddev);
577 static void load_gpu(struct drm_device *dev)
579 static DEFINE_MUTEX(init_lock);
580 struct msm_drm_private *priv = dev->dev_private;
582 mutex_lock(&init_lock);
585 priv->gpu = adreno_load_gpu(dev);
587 mutex_unlock(&init_lock);
590 static int context_init(struct drm_device *dev, struct drm_file *file)
592 struct msm_drm_private *priv = dev->dev_private;
593 struct msm_file_private *ctx;
595 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
599 msm_submitqueue_init(dev, ctx);
601 ctx->aspace = priv->gpu ? priv->gpu->aspace : NULL;
602 file->driver_priv = ctx;
607 static int msm_open(struct drm_device *dev, struct drm_file *file)
609 /* For now, load gpu on open.. to avoid the requirement of having
610 * firmware in the initrd.
614 return context_init(dev, file);
617 static void context_close(struct msm_file_private *ctx)
619 msm_submitqueue_close(ctx);
623 static void msm_postclose(struct drm_device *dev, struct drm_file *file)
625 struct msm_drm_private *priv = dev->dev_private;
626 struct msm_file_private *ctx = file->driver_priv;
628 mutex_lock(&dev->struct_mutex);
629 if (ctx == priv->lastctx)
630 priv->lastctx = NULL;
631 mutex_unlock(&dev->struct_mutex);
636 static irqreturn_t msm_irq(int irq, void *arg)
638 struct drm_device *dev = arg;
639 struct msm_drm_private *priv = dev->dev_private;
640 struct msm_kms *kms = priv->kms;
642 return kms->funcs->irq(kms);
645 static void msm_irq_preinstall(struct drm_device *dev)
647 struct msm_drm_private *priv = dev->dev_private;
648 struct msm_kms *kms = priv->kms;
650 kms->funcs->irq_preinstall(kms);
653 static int msm_irq_postinstall(struct drm_device *dev)
655 struct msm_drm_private *priv = dev->dev_private;
656 struct msm_kms *kms = priv->kms;
659 if (kms->funcs->irq_postinstall)
660 return kms->funcs->irq_postinstall(kms);
665 static void msm_irq_uninstall(struct drm_device *dev)
667 struct msm_drm_private *priv = dev->dev_private;
668 struct msm_kms *kms = priv->kms;
670 kms->funcs->irq_uninstall(kms);
673 int msm_crtc_enable_vblank(struct drm_crtc *crtc)
675 struct drm_device *dev = crtc->dev;
676 unsigned int pipe = crtc->index;
677 struct msm_drm_private *priv = dev->dev_private;
678 struct msm_kms *kms = priv->kms;
681 DBG("dev=%p, crtc=%u", dev, pipe);
682 return vblank_ctrl_queue_work(priv, pipe, true);
685 void msm_crtc_disable_vblank(struct drm_crtc *crtc)
687 struct drm_device *dev = crtc->dev;
688 unsigned int pipe = crtc->index;
689 struct msm_drm_private *priv = dev->dev_private;
690 struct msm_kms *kms = priv->kms;
693 DBG("dev=%p, crtc=%u", dev, pipe);
694 vblank_ctrl_queue_work(priv, pipe, false);
701 static int msm_ioctl_get_param(struct drm_device *dev, void *data,
702 struct drm_file *file)
704 struct msm_drm_private *priv = dev->dev_private;
705 struct drm_msm_param *args = data;
708 /* for now, we just have 3d pipe.. eventually this would need to
709 * be more clever to dispatch to appropriate gpu module:
711 if (args->pipe != MSM_PIPE_3D0)
719 return gpu->funcs->get_param(gpu, args->param, &args->value);
722 static int msm_ioctl_gem_new(struct drm_device *dev, void *data,
723 struct drm_file *file)
725 struct drm_msm_gem_new *args = data;
727 if (args->flags & ~MSM_BO_FLAGS) {
728 DRM_ERROR("invalid flags: %08x\n", args->flags);
732 return msm_gem_new_handle(dev, file, args->size,
733 args->flags, &args->handle, NULL);
736 static inline ktime_t to_ktime(struct drm_msm_timespec timeout)
738 return ktime_set(timeout.tv_sec, timeout.tv_nsec);
741 static int msm_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
742 struct drm_file *file)
744 struct drm_msm_gem_cpu_prep *args = data;
745 struct drm_gem_object *obj;
746 ktime_t timeout = to_ktime(args->timeout);
749 if (args->op & ~MSM_PREP_FLAGS) {
750 DRM_ERROR("invalid op: %08x\n", args->op);
754 obj = drm_gem_object_lookup(file, args->handle);
758 ret = msm_gem_cpu_prep(obj, args->op, &timeout);
760 drm_gem_object_put_unlocked(obj);
765 static int msm_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
766 struct drm_file *file)
768 struct drm_msm_gem_cpu_fini *args = data;
769 struct drm_gem_object *obj;
772 obj = drm_gem_object_lookup(file, args->handle);
776 ret = msm_gem_cpu_fini(obj);
778 drm_gem_object_put_unlocked(obj);
783 static int msm_ioctl_gem_info_iova(struct drm_device *dev,
784 struct drm_gem_object *obj, uint64_t *iova)
786 struct msm_drm_private *priv = dev->dev_private;
792 * Don't pin the memory here - just get an address so that userspace can
795 return msm_gem_get_iova(obj, priv->gpu->aspace, iova);
798 static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
799 struct drm_file *file)
801 struct drm_msm_gem_info *args = data;
802 struct drm_gem_object *obj;
803 struct msm_gem_object *msm_obj;
809 switch (args->info) {
810 case MSM_INFO_GET_OFFSET:
811 case MSM_INFO_GET_IOVA:
812 /* value returned as immediate, not pointer, so len==0: */
816 case MSM_INFO_SET_NAME:
817 case MSM_INFO_GET_NAME:
823 obj = drm_gem_object_lookup(file, args->handle);
827 msm_obj = to_msm_bo(obj);
829 switch (args->info) {
830 case MSM_INFO_GET_OFFSET:
831 args->value = msm_gem_mmap_offset(obj);
833 case MSM_INFO_GET_IOVA:
834 ret = msm_ioctl_gem_info_iova(dev, obj, &args->value);
836 case MSM_INFO_SET_NAME:
837 /* length check should leave room for terminating null: */
838 if (args->len >= sizeof(msm_obj->name)) {
842 if (copy_from_user(msm_obj->name, u64_to_user_ptr(args->value),
844 msm_obj->name[0] = '\0';
848 msm_obj->name[args->len] = '\0';
849 for (i = 0; i < args->len; i++) {
850 if (!isprint(msm_obj->name[i])) {
851 msm_obj->name[i] = '\0';
856 case MSM_INFO_GET_NAME:
857 if (args->value && (args->len < strlen(msm_obj->name))) {
861 args->len = strlen(msm_obj->name);
863 if (copy_to_user(u64_to_user_ptr(args->value),
864 msm_obj->name, args->len))
870 drm_gem_object_put_unlocked(obj);
875 static int msm_ioctl_wait_fence(struct drm_device *dev, void *data,
876 struct drm_file *file)
878 struct msm_drm_private *priv = dev->dev_private;
879 struct drm_msm_wait_fence *args = data;
880 ktime_t timeout = to_ktime(args->timeout);
881 struct msm_gpu_submitqueue *queue;
882 struct msm_gpu *gpu = priv->gpu;
886 DRM_ERROR("invalid pad: %08x\n", args->pad);
893 queue = msm_submitqueue_get(file->driver_priv, args->queueid);
897 ret = msm_wait_fence(gpu->rb[queue->prio]->fctx, args->fence, &timeout,
900 msm_submitqueue_put(queue);
904 static int msm_ioctl_gem_madvise(struct drm_device *dev, void *data,
905 struct drm_file *file)
907 struct drm_msm_gem_madvise *args = data;
908 struct drm_gem_object *obj;
911 switch (args->madv) {
912 case MSM_MADV_DONTNEED:
913 case MSM_MADV_WILLNEED:
919 ret = mutex_lock_interruptible(&dev->struct_mutex);
923 obj = drm_gem_object_lookup(file, args->handle);
929 ret = msm_gem_madvise(obj, args->madv);
931 args->retained = ret;
935 drm_gem_object_put(obj);
938 mutex_unlock(&dev->struct_mutex);
943 static int msm_ioctl_submitqueue_new(struct drm_device *dev, void *data,
944 struct drm_file *file)
946 struct drm_msm_submitqueue *args = data;
948 if (args->flags & ~MSM_SUBMITQUEUE_FLAGS)
951 return msm_submitqueue_create(dev, file->driver_priv, args->prio,
952 args->flags, &args->id);
955 static int msm_ioctl_submitqueue_query(struct drm_device *dev, void *data,
956 struct drm_file *file)
958 return msm_submitqueue_query(dev, file->driver_priv, data);
961 static int msm_ioctl_submitqueue_close(struct drm_device *dev, void *data,
962 struct drm_file *file)
964 u32 id = *(u32 *) data;
966 return msm_submitqueue_remove(file->driver_priv, id);
969 static const struct drm_ioctl_desc msm_ioctls[] = {
970 DRM_IOCTL_DEF_DRV(MSM_GET_PARAM, msm_ioctl_get_param, DRM_RENDER_ALLOW),
971 DRM_IOCTL_DEF_DRV(MSM_GEM_NEW, msm_ioctl_gem_new, DRM_RENDER_ALLOW),
972 DRM_IOCTL_DEF_DRV(MSM_GEM_INFO, msm_ioctl_gem_info, DRM_RENDER_ALLOW),
973 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_PREP, msm_ioctl_gem_cpu_prep, DRM_RENDER_ALLOW),
974 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI, msm_ioctl_gem_cpu_fini, DRM_RENDER_ALLOW),
975 DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT, msm_ioctl_gem_submit, DRM_RENDER_ALLOW),
976 DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE, msm_ioctl_wait_fence, DRM_RENDER_ALLOW),
977 DRM_IOCTL_DEF_DRV(MSM_GEM_MADVISE, msm_ioctl_gem_madvise, DRM_RENDER_ALLOW),
978 DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_NEW, msm_ioctl_submitqueue_new, DRM_RENDER_ALLOW),
979 DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_CLOSE, msm_ioctl_submitqueue_close, DRM_RENDER_ALLOW),
980 DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_QUERY, msm_ioctl_submitqueue_query, DRM_RENDER_ALLOW),
983 static const struct vm_operations_struct vm_ops = {
984 .fault = msm_gem_fault,
985 .open = drm_gem_vm_open,
986 .close = drm_gem_vm_close,
989 static const struct file_operations fops = {
990 .owner = THIS_MODULE,
992 .release = drm_release,
993 .unlocked_ioctl = drm_ioctl,
994 .compat_ioctl = drm_compat_ioctl,
998 .mmap = msm_gem_mmap,
1001 static struct drm_driver msm_driver = {
1002 .driver_features = DRIVER_GEM |
1007 .postclose = msm_postclose,
1008 .lastclose = drm_fb_helper_lastclose,
1009 .irq_handler = msm_irq,
1010 .irq_preinstall = msm_irq_preinstall,
1011 .irq_postinstall = msm_irq_postinstall,
1012 .irq_uninstall = msm_irq_uninstall,
1013 .gem_free_object_unlocked = msm_gem_free_object,
1014 .gem_vm_ops = &vm_ops,
1015 .dumb_create = msm_gem_dumb_create,
1016 .dumb_map_offset = msm_gem_dumb_map_offset,
1017 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
1018 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
1019 .gem_prime_pin = msm_gem_prime_pin,
1020 .gem_prime_unpin = msm_gem_prime_unpin,
1021 .gem_prime_get_sg_table = msm_gem_prime_get_sg_table,
1022 .gem_prime_import_sg_table = msm_gem_prime_import_sg_table,
1023 .gem_prime_vmap = msm_gem_prime_vmap,
1024 .gem_prime_vunmap = msm_gem_prime_vunmap,
1025 .gem_prime_mmap = msm_gem_prime_mmap,
1026 #ifdef CONFIG_DEBUG_FS
1027 .debugfs_init = msm_debugfs_init,
1029 .ioctls = msm_ioctls,
1030 .num_ioctls = ARRAY_SIZE(msm_ioctls),
1033 .desc = "MSM Snapdragon DRM",
1035 .major = MSM_VERSION_MAJOR,
1036 .minor = MSM_VERSION_MINOR,
1037 .patchlevel = MSM_VERSION_PATCHLEVEL,
1040 #ifdef CONFIG_PM_SLEEP
1041 static int msm_pm_suspend(struct device *dev)
1043 struct drm_device *ddev = dev_get_drvdata(dev);
1044 struct msm_drm_private *priv = ddev->dev_private;
1046 if (WARN_ON(priv->pm_state))
1047 drm_atomic_state_put(priv->pm_state);
1049 priv->pm_state = drm_atomic_helper_suspend(ddev);
1050 if (IS_ERR(priv->pm_state)) {
1051 int ret = PTR_ERR(priv->pm_state);
1052 DRM_ERROR("Failed to suspend dpu, %d\n", ret);
1059 static int msm_pm_resume(struct device *dev)
1061 struct drm_device *ddev = dev_get_drvdata(dev);
1062 struct msm_drm_private *priv = ddev->dev_private;
1065 if (WARN_ON(!priv->pm_state))
1068 ret = drm_atomic_helper_resume(ddev, priv->pm_state);
1070 priv->pm_state = NULL;
1077 static int msm_runtime_suspend(struct device *dev)
1079 struct drm_device *ddev = dev_get_drvdata(dev);
1080 struct msm_drm_private *priv = ddev->dev_private;
1081 struct msm_mdss *mdss = priv->mdss;
1085 if (mdss && mdss->funcs)
1086 return mdss->funcs->disable(mdss);
1091 static int msm_runtime_resume(struct device *dev)
1093 struct drm_device *ddev = dev_get_drvdata(dev);
1094 struct msm_drm_private *priv = ddev->dev_private;
1095 struct msm_mdss *mdss = priv->mdss;
1099 if (mdss && mdss->funcs)
1100 return mdss->funcs->enable(mdss);
1106 static const struct dev_pm_ops msm_pm_ops = {
1107 SET_SYSTEM_SLEEP_PM_OPS(msm_pm_suspend, msm_pm_resume)
1108 SET_RUNTIME_PM_OPS(msm_runtime_suspend, msm_runtime_resume, NULL)
1112 * Componentized driver support:
1116 * NOTE: duplication of the same code as exynos or imx (or probably any other).
1117 * so probably some room for some helpers
1119 static int compare_of(struct device *dev, void *data)
1121 return dev->of_node == data;
1125 * Identify what components need to be added by parsing what remote-endpoints
1126 * our MDP output ports are connected to. In the case of LVDS on MDP4, there
1127 * is no external component that we need to add since LVDS is within MDP4
1130 static int add_components_mdp(struct device *mdp_dev,
1131 struct component_match **matchptr)
1133 struct device_node *np = mdp_dev->of_node;
1134 struct device_node *ep_node;
1135 struct device *master_dev;
1138 * on MDP4 based platforms, the MDP platform device is the component
1139 * master that adds other display interface components to itself.
1141 * on MDP5 based platforms, the MDSS platform device is the component
1142 * master that adds MDP5 and other display interface components to
1145 if (of_device_is_compatible(np, "qcom,mdp4"))
1146 master_dev = mdp_dev;
1148 master_dev = mdp_dev->parent;
1150 for_each_endpoint_of_node(np, ep_node) {
1151 struct device_node *intf;
1152 struct of_endpoint ep;
1155 ret = of_graph_parse_endpoint(ep_node, &ep);
1157 DRM_DEV_ERROR(mdp_dev, "unable to parse port endpoint\n");
1158 of_node_put(ep_node);
1163 * The LCDC/LVDS port on MDP4 is a speacial case where the
1164 * remote-endpoint isn't a component that we need to add
1166 if (of_device_is_compatible(np, "qcom,mdp4") &&
1171 * It's okay if some of the ports don't have a remote endpoint
1172 * specified. It just means that the port isn't connected to
1173 * any external interface.
1175 intf = of_graph_get_remote_port_parent(ep_node);
1179 if (of_device_is_available(intf))
1180 drm_of_component_match_add(master_dev, matchptr,
1189 static int compare_name_mdp(struct device *dev, void *data)
1191 return (strstr(dev_name(dev), "mdp") != NULL);
1194 static int add_display_components(struct device *dev,
1195 struct component_match **matchptr)
1197 struct device *mdp_dev;
1201 * MDP5/DPU based devices don't have a flat hierarchy. There is a top
1202 * level parent: MDSS, and children: MDP5/DPU, DSI, HDMI, eDP etc.
1203 * Populate the children devices, find the MDP5/DPU node, and then add
1204 * the interfaces to our components list.
1206 if (of_device_is_compatible(dev->of_node, "qcom,mdss") ||
1207 of_device_is_compatible(dev->of_node, "qcom,sdm845-mdss") ||
1208 of_device_is_compatible(dev->of_node, "qcom,sc7180-mdss")) {
1209 ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
1211 DRM_DEV_ERROR(dev, "failed to populate children devices\n");
1215 mdp_dev = device_find_child(dev, NULL, compare_name_mdp);
1217 DRM_DEV_ERROR(dev, "failed to find MDSS MDP node\n");
1218 of_platform_depopulate(dev);
1222 put_device(mdp_dev);
1224 /* add the MDP component itself */
1225 drm_of_component_match_add(dev, matchptr, compare_of,
1232 ret = add_components_mdp(mdp_dev, matchptr);
1234 of_platform_depopulate(dev);
1240 * We don't know what's the best binding to link the gpu with the drm device.
1241 * Fow now, we just hunt for all the possible gpus that we support, and add them
1244 static const struct of_device_id msm_gpu_match[] = {
1245 { .compatible = "qcom,adreno" },
1246 { .compatible = "qcom,adreno-3xx" },
1247 { .compatible = "amd,imageon" },
1248 { .compatible = "qcom,kgsl-3d0" },
1252 static int add_gpu_components(struct device *dev,
1253 struct component_match **matchptr)
1255 struct device_node *np;
1257 np = of_find_matching_node(NULL, msm_gpu_match);
1261 if (of_device_is_available(np))
1262 drm_of_component_match_add(dev, matchptr, compare_of, np);
1269 static int msm_drm_bind(struct device *dev)
1271 return msm_drm_init(dev, &msm_driver);
1274 static void msm_drm_unbind(struct device *dev)
1276 msm_drm_uninit(dev);
1279 static const struct component_master_ops msm_drm_ops = {
1280 .bind = msm_drm_bind,
1281 .unbind = msm_drm_unbind,
1288 static int msm_pdev_probe(struct platform_device *pdev)
1290 struct component_match *match = NULL;
1293 if (get_mdp_ver(pdev)) {
1294 ret = add_display_components(&pdev->dev, &match);
1299 ret = add_gpu_components(&pdev->dev, &match);
1303 /* on all devices that I am aware of, iommu's which can map
1304 * any address the cpu can see are used:
1306 ret = dma_set_mask_and_coherent(&pdev->dev, ~0);
1310 ret = component_master_add_with_match(&pdev->dev, &msm_drm_ops, match);
1317 of_platform_depopulate(&pdev->dev);
1321 static int msm_pdev_remove(struct platform_device *pdev)
1323 component_master_del(&pdev->dev, &msm_drm_ops);
1324 of_platform_depopulate(&pdev->dev);
1329 static const struct of_device_id dt_match[] = {
1330 { .compatible = "qcom,mdp4", .data = (void *)KMS_MDP4 },
1331 { .compatible = "qcom,mdss", .data = (void *)KMS_MDP5 },
1332 { .compatible = "qcom,sdm845-mdss", .data = (void *)KMS_DPU },
1333 { .compatible = "qcom,sc7180-mdss", .data = (void *)KMS_DPU },
1336 MODULE_DEVICE_TABLE(of, dt_match);
1338 static struct platform_driver msm_platform_driver = {
1339 .probe = msm_pdev_probe,
1340 .remove = msm_pdev_remove,
1343 .of_match_table = dt_match,
1348 static int __init msm_drm_register(void)
1358 msm_hdmi_register();
1360 return platform_driver_register(&msm_platform_driver);
1363 static void __exit msm_drm_unregister(void)
1366 platform_driver_unregister(&msm_platform_driver);
1367 msm_hdmi_unregister();
1368 adreno_unregister();
1369 msm_edp_unregister();
1370 msm_dsi_unregister();
1371 msm_mdp_unregister();
1372 msm_dpu_unregister();
1375 module_init(msm_drm_register);
1376 module_exit(msm_drm_unregister);
1379 MODULE_DESCRIPTION("MSM DRM Driver");
1380 MODULE_LICENSE("GPL");