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_nocache(&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 msm_gem_shrinker_init(ddev);
446 switch (get_mdp_ver(pdev)) {
448 kms = mdp4_kms_init(ddev);
452 kms = mdp5_kms_init(ddev);
455 kms = dpu_kms_init(ddev);
459 /* valid only for the dummy headless case, where of_node=NULL */
460 WARN_ON(dev->of_node);
466 DRM_DEV_ERROR(dev, "failed to load kms\n");
472 /* Enable normalization of plane zpos */
473 ddev->mode_config.normalize_zpos = true;
477 ret = kms->funcs->hw_init(kms);
479 DRM_DEV_ERROR(dev, "kms hw init failed: %d\n", ret);
484 ddev->mode_config.funcs = &mode_config_funcs;
485 ddev->mode_config.helper_private = &mode_config_helper_funcs;
488 * this priority was found during empiric testing to have appropriate
489 * realtime scheduling to process display updates and interact with
490 * other real time and normal priority task
492 param.sched_priority = 16;
493 for (i = 0; i < priv->num_crtcs; i++) {
494 /* initialize event thread */
495 priv->event_thread[i].crtc_id = priv->crtcs[i]->base.id;
496 kthread_init_worker(&priv->event_thread[i].worker);
497 priv->event_thread[i].dev = ddev;
498 priv->event_thread[i].thread =
499 kthread_run(kthread_worker_fn,
500 &priv->event_thread[i].worker,
501 "crtc_event:%d", priv->event_thread[i].crtc_id);
502 if (IS_ERR(priv->event_thread[i].thread)) {
503 DRM_DEV_ERROR(dev, "failed to create crtc_event kthread\n");
504 priv->event_thread[i].thread = NULL;
508 ret = sched_setscheduler(priv->event_thread[i].thread,
511 dev_warn(dev, "event_thread set priority failed:%d\n",
515 ret = drm_vblank_init(ddev, priv->num_crtcs);
517 DRM_DEV_ERROR(dev, "failed to initialize vblank\n");
522 pm_runtime_get_sync(dev);
523 ret = drm_irq_install(ddev, kms->irq);
524 pm_runtime_put_sync(dev);
526 DRM_DEV_ERROR(dev, "failed to install IRQ handler\n");
531 ret = drm_dev_register(ddev, 0);
535 drm_mode_config_reset(ddev);
537 #ifdef CONFIG_DRM_FBDEV_EMULATION
539 priv->fbdev = msm_fbdev_init(ddev);
542 ret = msm_debugfs_late_init(ddev);
546 drm_kms_helper_poll_init(ddev);
554 if (mdss && mdss->funcs)
555 mdss->funcs->destroy(ddev);
567 static void load_gpu(struct drm_device *dev)
569 static DEFINE_MUTEX(init_lock);
570 struct msm_drm_private *priv = dev->dev_private;
572 mutex_lock(&init_lock);
575 priv->gpu = adreno_load_gpu(dev);
577 mutex_unlock(&init_lock);
580 static int context_init(struct drm_device *dev, struct drm_file *file)
582 struct msm_drm_private *priv = dev->dev_private;
583 struct msm_file_private *ctx;
585 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
589 msm_submitqueue_init(dev, ctx);
591 ctx->aspace = priv->gpu ? priv->gpu->aspace : NULL;
592 file->driver_priv = ctx;
597 static int msm_open(struct drm_device *dev, struct drm_file *file)
599 /* For now, load gpu on open.. to avoid the requirement of having
600 * firmware in the initrd.
604 return context_init(dev, file);
607 static void context_close(struct msm_file_private *ctx)
609 msm_submitqueue_close(ctx);
613 static void msm_postclose(struct drm_device *dev, struct drm_file *file)
615 struct msm_drm_private *priv = dev->dev_private;
616 struct msm_file_private *ctx = file->driver_priv;
618 mutex_lock(&dev->struct_mutex);
619 if (ctx == priv->lastctx)
620 priv->lastctx = NULL;
621 mutex_unlock(&dev->struct_mutex);
626 static irqreturn_t msm_irq(int irq, void *arg)
628 struct drm_device *dev = arg;
629 struct msm_drm_private *priv = dev->dev_private;
630 struct msm_kms *kms = priv->kms;
632 return kms->funcs->irq(kms);
635 static void msm_irq_preinstall(struct drm_device *dev)
637 struct msm_drm_private *priv = dev->dev_private;
638 struct msm_kms *kms = priv->kms;
640 kms->funcs->irq_preinstall(kms);
643 static int msm_irq_postinstall(struct drm_device *dev)
645 struct msm_drm_private *priv = dev->dev_private;
646 struct msm_kms *kms = priv->kms;
649 if (kms->funcs->irq_postinstall)
650 return kms->funcs->irq_postinstall(kms);
655 static void msm_irq_uninstall(struct drm_device *dev)
657 struct msm_drm_private *priv = dev->dev_private;
658 struct msm_kms *kms = priv->kms;
660 kms->funcs->irq_uninstall(kms);
663 static int msm_enable_vblank(struct drm_device *dev, unsigned int pipe)
665 struct msm_drm_private *priv = dev->dev_private;
666 struct msm_kms *kms = priv->kms;
669 DBG("dev=%p, crtc=%u", dev, pipe);
670 return vblank_ctrl_queue_work(priv, pipe, true);
673 static void msm_disable_vblank(struct drm_device *dev, unsigned int pipe)
675 struct msm_drm_private *priv = dev->dev_private;
676 struct msm_kms *kms = priv->kms;
679 DBG("dev=%p, crtc=%u", dev, pipe);
680 vblank_ctrl_queue_work(priv, pipe, false);
687 static int msm_ioctl_get_param(struct drm_device *dev, void *data,
688 struct drm_file *file)
690 struct msm_drm_private *priv = dev->dev_private;
691 struct drm_msm_param *args = data;
694 /* for now, we just have 3d pipe.. eventually this would need to
695 * be more clever to dispatch to appropriate gpu module:
697 if (args->pipe != MSM_PIPE_3D0)
705 return gpu->funcs->get_param(gpu, args->param, &args->value);
708 static int msm_ioctl_gem_new(struct drm_device *dev, void *data,
709 struct drm_file *file)
711 struct drm_msm_gem_new *args = data;
713 if (args->flags & ~MSM_BO_FLAGS) {
714 DRM_ERROR("invalid flags: %08x\n", args->flags);
718 return msm_gem_new_handle(dev, file, args->size,
719 args->flags, &args->handle, NULL);
722 static inline ktime_t to_ktime(struct drm_msm_timespec timeout)
724 return ktime_set(timeout.tv_sec, timeout.tv_nsec);
727 static int msm_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
728 struct drm_file *file)
730 struct drm_msm_gem_cpu_prep *args = data;
731 struct drm_gem_object *obj;
732 ktime_t timeout = to_ktime(args->timeout);
735 if (args->op & ~MSM_PREP_FLAGS) {
736 DRM_ERROR("invalid op: %08x\n", args->op);
740 obj = drm_gem_object_lookup(file, args->handle);
744 ret = msm_gem_cpu_prep(obj, args->op, &timeout);
746 drm_gem_object_put_unlocked(obj);
751 static int msm_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
752 struct drm_file *file)
754 struct drm_msm_gem_cpu_fini *args = data;
755 struct drm_gem_object *obj;
758 obj = drm_gem_object_lookup(file, args->handle);
762 ret = msm_gem_cpu_fini(obj);
764 drm_gem_object_put_unlocked(obj);
769 static int msm_ioctl_gem_info_iova(struct drm_device *dev,
770 struct drm_gem_object *obj, uint64_t *iova)
772 struct msm_drm_private *priv = dev->dev_private;
778 * Don't pin the memory here - just get an address so that userspace can
781 return msm_gem_get_iova(obj, priv->gpu->aspace, iova);
784 static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
785 struct drm_file *file)
787 struct drm_msm_gem_info *args = data;
788 struct drm_gem_object *obj;
789 struct msm_gem_object *msm_obj;
795 switch (args->info) {
796 case MSM_INFO_GET_OFFSET:
797 case MSM_INFO_GET_IOVA:
798 /* value returned as immediate, not pointer, so len==0: */
802 case MSM_INFO_SET_NAME:
803 case MSM_INFO_GET_NAME:
809 obj = drm_gem_object_lookup(file, args->handle);
813 msm_obj = to_msm_bo(obj);
815 switch (args->info) {
816 case MSM_INFO_GET_OFFSET:
817 args->value = msm_gem_mmap_offset(obj);
819 case MSM_INFO_GET_IOVA:
820 ret = msm_ioctl_gem_info_iova(dev, obj, &args->value);
822 case MSM_INFO_SET_NAME:
823 /* length check should leave room for terminating null: */
824 if (args->len >= sizeof(msm_obj->name)) {
828 if (copy_from_user(msm_obj->name, u64_to_user_ptr(args->value),
830 msm_obj->name[0] = '\0';
834 msm_obj->name[args->len] = '\0';
835 for (i = 0; i < args->len; i++) {
836 if (!isprint(msm_obj->name[i])) {
837 msm_obj->name[i] = '\0';
842 case MSM_INFO_GET_NAME:
843 if (args->value && (args->len < strlen(msm_obj->name))) {
847 args->len = strlen(msm_obj->name);
849 if (copy_to_user(u64_to_user_ptr(args->value),
850 msm_obj->name, args->len))
856 drm_gem_object_put_unlocked(obj);
861 static int msm_ioctl_wait_fence(struct drm_device *dev, void *data,
862 struct drm_file *file)
864 struct msm_drm_private *priv = dev->dev_private;
865 struct drm_msm_wait_fence *args = data;
866 ktime_t timeout = to_ktime(args->timeout);
867 struct msm_gpu_submitqueue *queue;
868 struct msm_gpu *gpu = priv->gpu;
872 DRM_ERROR("invalid pad: %08x\n", args->pad);
879 queue = msm_submitqueue_get(file->driver_priv, args->queueid);
883 ret = msm_wait_fence(gpu->rb[queue->prio]->fctx, args->fence, &timeout,
886 msm_submitqueue_put(queue);
890 static int msm_ioctl_gem_madvise(struct drm_device *dev, void *data,
891 struct drm_file *file)
893 struct drm_msm_gem_madvise *args = data;
894 struct drm_gem_object *obj;
897 switch (args->madv) {
898 case MSM_MADV_DONTNEED:
899 case MSM_MADV_WILLNEED:
905 ret = mutex_lock_interruptible(&dev->struct_mutex);
909 obj = drm_gem_object_lookup(file, args->handle);
915 ret = msm_gem_madvise(obj, args->madv);
917 args->retained = ret;
921 drm_gem_object_put(obj);
924 mutex_unlock(&dev->struct_mutex);
929 static int msm_ioctl_submitqueue_new(struct drm_device *dev, void *data,
930 struct drm_file *file)
932 struct drm_msm_submitqueue *args = data;
934 if (args->flags & ~MSM_SUBMITQUEUE_FLAGS)
937 return msm_submitqueue_create(dev, file->driver_priv, args->prio,
938 args->flags, &args->id);
941 static int msm_ioctl_submitqueue_query(struct drm_device *dev, void *data,
942 struct drm_file *file)
944 return msm_submitqueue_query(dev, file->driver_priv, data);
947 static int msm_ioctl_submitqueue_close(struct drm_device *dev, void *data,
948 struct drm_file *file)
950 u32 id = *(u32 *) data;
952 return msm_submitqueue_remove(file->driver_priv, id);
955 static const struct drm_ioctl_desc msm_ioctls[] = {
956 DRM_IOCTL_DEF_DRV(MSM_GET_PARAM, msm_ioctl_get_param, DRM_RENDER_ALLOW),
957 DRM_IOCTL_DEF_DRV(MSM_GEM_NEW, msm_ioctl_gem_new, DRM_RENDER_ALLOW),
958 DRM_IOCTL_DEF_DRV(MSM_GEM_INFO, msm_ioctl_gem_info, DRM_RENDER_ALLOW),
959 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_PREP, msm_ioctl_gem_cpu_prep, DRM_RENDER_ALLOW),
960 DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI, msm_ioctl_gem_cpu_fini, DRM_RENDER_ALLOW),
961 DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT, msm_ioctl_gem_submit, DRM_RENDER_ALLOW),
962 DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE, msm_ioctl_wait_fence, DRM_RENDER_ALLOW),
963 DRM_IOCTL_DEF_DRV(MSM_GEM_MADVISE, msm_ioctl_gem_madvise, DRM_RENDER_ALLOW),
964 DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_NEW, msm_ioctl_submitqueue_new, DRM_RENDER_ALLOW),
965 DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_CLOSE, msm_ioctl_submitqueue_close, DRM_RENDER_ALLOW),
966 DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_QUERY, msm_ioctl_submitqueue_query, DRM_RENDER_ALLOW),
969 static const struct vm_operations_struct vm_ops = {
970 .fault = msm_gem_fault,
971 .open = drm_gem_vm_open,
972 .close = drm_gem_vm_close,
975 static const struct file_operations fops = {
976 .owner = THIS_MODULE,
978 .release = drm_release,
979 .unlocked_ioctl = drm_ioctl,
980 .compat_ioctl = drm_compat_ioctl,
984 .mmap = msm_gem_mmap,
987 static struct drm_driver msm_driver = {
988 .driver_features = DRIVER_GEM |
993 .postclose = msm_postclose,
994 .lastclose = drm_fb_helper_lastclose,
995 .irq_handler = msm_irq,
996 .irq_preinstall = msm_irq_preinstall,
997 .irq_postinstall = msm_irq_postinstall,
998 .irq_uninstall = msm_irq_uninstall,
999 .enable_vblank = msm_enable_vblank,
1000 .disable_vblank = msm_disable_vblank,
1001 .gem_free_object_unlocked = msm_gem_free_object,
1002 .gem_vm_ops = &vm_ops,
1003 .dumb_create = msm_gem_dumb_create,
1004 .dumb_map_offset = msm_gem_dumb_map_offset,
1005 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
1006 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
1007 .gem_prime_pin = msm_gem_prime_pin,
1008 .gem_prime_unpin = msm_gem_prime_unpin,
1009 .gem_prime_get_sg_table = msm_gem_prime_get_sg_table,
1010 .gem_prime_import_sg_table = msm_gem_prime_import_sg_table,
1011 .gem_prime_vmap = msm_gem_prime_vmap,
1012 .gem_prime_vunmap = msm_gem_prime_vunmap,
1013 .gem_prime_mmap = msm_gem_prime_mmap,
1014 #ifdef CONFIG_DEBUG_FS
1015 .debugfs_init = msm_debugfs_init,
1017 .ioctls = msm_ioctls,
1018 .num_ioctls = ARRAY_SIZE(msm_ioctls),
1021 .desc = "MSM Snapdragon DRM",
1023 .major = MSM_VERSION_MAJOR,
1024 .minor = MSM_VERSION_MINOR,
1025 .patchlevel = MSM_VERSION_PATCHLEVEL,
1028 #ifdef CONFIG_PM_SLEEP
1029 static int msm_pm_suspend(struct device *dev)
1031 struct drm_device *ddev = dev_get_drvdata(dev);
1032 struct msm_drm_private *priv = ddev->dev_private;
1034 if (WARN_ON(priv->pm_state))
1035 drm_atomic_state_put(priv->pm_state);
1037 priv->pm_state = drm_atomic_helper_suspend(ddev);
1038 if (IS_ERR(priv->pm_state)) {
1039 int ret = PTR_ERR(priv->pm_state);
1040 DRM_ERROR("Failed to suspend dpu, %d\n", ret);
1047 static int msm_pm_resume(struct device *dev)
1049 struct drm_device *ddev = dev_get_drvdata(dev);
1050 struct msm_drm_private *priv = ddev->dev_private;
1053 if (WARN_ON(!priv->pm_state))
1056 ret = drm_atomic_helper_resume(ddev, priv->pm_state);
1058 priv->pm_state = NULL;
1065 static int msm_runtime_suspend(struct device *dev)
1067 struct drm_device *ddev = dev_get_drvdata(dev);
1068 struct msm_drm_private *priv = ddev->dev_private;
1069 struct msm_mdss *mdss = priv->mdss;
1073 if (mdss && mdss->funcs)
1074 return mdss->funcs->disable(mdss);
1079 static int msm_runtime_resume(struct device *dev)
1081 struct drm_device *ddev = dev_get_drvdata(dev);
1082 struct msm_drm_private *priv = ddev->dev_private;
1083 struct msm_mdss *mdss = priv->mdss;
1087 if (mdss && mdss->funcs)
1088 return mdss->funcs->enable(mdss);
1094 static const struct dev_pm_ops msm_pm_ops = {
1095 SET_SYSTEM_SLEEP_PM_OPS(msm_pm_suspend, msm_pm_resume)
1096 SET_RUNTIME_PM_OPS(msm_runtime_suspend, msm_runtime_resume, NULL)
1100 * Componentized driver support:
1104 * NOTE: duplication of the same code as exynos or imx (or probably any other).
1105 * so probably some room for some helpers
1107 static int compare_of(struct device *dev, void *data)
1109 return dev->of_node == data;
1113 * Identify what components need to be added by parsing what remote-endpoints
1114 * our MDP output ports are connected to. In the case of LVDS on MDP4, there
1115 * is no external component that we need to add since LVDS is within MDP4
1118 static int add_components_mdp(struct device *mdp_dev,
1119 struct component_match **matchptr)
1121 struct device_node *np = mdp_dev->of_node;
1122 struct device_node *ep_node;
1123 struct device *master_dev;
1126 * on MDP4 based platforms, the MDP platform device is the component
1127 * master that adds other display interface components to itself.
1129 * on MDP5 based platforms, the MDSS platform device is the component
1130 * master that adds MDP5 and other display interface components to
1133 if (of_device_is_compatible(np, "qcom,mdp4"))
1134 master_dev = mdp_dev;
1136 master_dev = mdp_dev->parent;
1138 for_each_endpoint_of_node(np, ep_node) {
1139 struct device_node *intf;
1140 struct of_endpoint ep;
1143 ret = of_graph_parse_endpoint(ep_node, &ep);
1145 DRM_DEV_ERROR(mdp_dev, "unable to parse port endpoint\n");
1146 of_node_put(ep_node);
1151 * The LCDC/LVDS port on MDP4 is a speacial case where the
1152 * remote-endpoint isn't a component that we need to add
1154 if (of_device_is_compatible(np, "qcom,mdp4") &&
1159 * It's okay if some of the ports don't have a remote endpoint
1160 * specified. It just means that the port isn't connected to
1161 * any external interface.
1163 intf = of_graph_get_remote_port_parent(ep_node);
1167 if (of_device_is_available(intf))
1168 drm_of_component_match_add(master_dev, matchptr,
1177 static int compare_name_mdp(struct device *dev, void *data)
1179 return (strstr(dev_name(dev), "mdp") != NULL);
1182 static int add_display_components(struct device *dev,
1183 struct component_match **matchptr)
1185 struct device *mdp_dev;
1189 * MDP5/DPU based devices don't have a flat hierarchy. There is a top
1190 * level parent: MDSS, and children: MDP5/DPU, DSI, HDMI, eDP etc.
1191 * Populate the children devices, find the MDP5/DPU node, and then add
1192 * the interfaces to our components list.
1194 if (of_device_is_compatible(dev->of_node, "qcom,mdss") ||
1195 of_device_is_compatible(dev->of_node, "qcom,sdm845-mdss")) {
1196 ret = of_platform_populate(dev->of_node, NULL, NULL, dev);
1198 DRM_DEV_ERROR(dev, "failed to populate children devices\n");
1202 mdp_dev = device_find_child(dev, NULL, compare_name_mdp);
1204 DRM_DEV_ERROR(dev, "failed to find MDSS MDP node\n");
1205 of_platform_depopulate(dev);
1209 put_device(mdp_dev);
1211 /* add the MDP component itself */
1212 drm_of_component_match_add(dev, matchptr, compare_of,
1219 ret = add_components_mdp(mdp_dev, matchptr);
1221 of_platform_depopulate(dev);
1227 * We don't know what's the best binding to link the gpu with the drm device.
1228 * Fow now, we just hunt for all the possible gpus that we support, and add them
1231 static const struct of_device_id msm_gpu_match[] = {
1232 { .compatible = "qcom,adreno" },
1233 { .compatible = "qcom,adreno-3xx" },
1234 { .compatible = "amd,imageon" },
1235 { .compatible = "qcom,kgsl-3d0" },
1239 static int add_gpu_components(struct device *dev,
1240 struct component_match **matchptr)
1242 struct device_node *np;
1244 np = of_find_matching_node(NULL, msm_gpu_match);
1248 if (of_device_is_available(np))
1249 drm_of_component_match_add(dev, matchptr, compare_of, np);
1256 static int msm_drm_bind(struct device *dev)
1258 return msm_drm_init(dev, &msm_driver);
1261 static void msm_drm_unbind(struct device *dev)
1263 msm_drm_uninit(dev);
1266 static const struct component_master_ops msm_drm_ops = {
1267 .bind = msm_drm_bind,
1268 .unbind = msm_drm_unbind,
1275 static int msm_pdev_probe(struct platform_device *pdev)
1277 struct component_match *match = NULL;
1280 if (get_mdp_ver(pdev)) {
1281 ret = add_display_components(&pdev->dev, &match);
1286 ret = add_gpu_components(&pdev->dev, &match);
1290 /* on all devices that I am aware of, iommu's which can map
1291 * any address the cpu can see are used:
1293 ret = dma_set_mask_and_coherent(&pdev->dev, ~0);
1297 ret = component_master_add_with_match(&pdev->dev, &msm_drm_ops, match);
1304 of_platform_depopulate(&pdev->dev);
1308 static int msm_pdev_remove(struct platform_device *pdev)
1310 component_master_del(&pdev->dev, &msm_drm_ops);
1311 of_platform_depopulate(&pdev->dev);
1316 static const struct of_device_id dt_match[] = {
1317 { .compatible = "qcom,mdp4", .data = (void *)KMS_MDP4 },
1318 { .compatible = "qcom,mdss", .data = (void *)KMS_MDP5 },
1319 { .compatible = "qcom,sdm845-mdss", .data = (void *)KMS_DPU },
1322 MODULE_DEVICE_TABLE(of, dt_match);
1324 static struct platform_driver msm_platform_driver = {
1325 .probe = msm_pdev_probe,
1326 .remove = msm_pdev_remove,
1329 .of_match_table = dt_match,
1334 static int __init msm_drm_register(void)
1344 msm_hdmi_register();
1346 return platform_driver_register(&msm_platform_driver);
1349 static void __exit msm_drm_unregister(void)
1352 platform_driver_unregister(&msm_platform_driver);
1353 msm_hdmi_unregister();
1354 adreno_unregister();
1355 msm_edp_unregister();
1356 msm_dsi_unregister();
1357 msm_mdp_unregister();
1358 msm_dpu_unregister();
1361 module_init(msm_drm_register);
1362 module_exit(msm_drm_unregister);
1365 MODULE_DESCRIPTION("MSM DRM Driver");
1366 MODULE_LICENSE("GPL");