--- /dev/null
+/*
+ * Copyright (C) 2013 Red Hat
+ * Author: Rob Clark <robdclark@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "msm_drv.h"
+#include "msm_gpu.h"
+#include "msm_kms.h"
+
+static void msm_fb_output_poll_changed(struct drm_device *dev)
+{
+#ifdef CONFIG_DRM_MSM_FBDEV
+ struct msm_drm_private *priv = dev->dev_private;
+ if (priv->fbdev)
+ drm_fb_helper_hotplug_event(priv->fbdev);
+#endif
+}
+
+static const struct drm_mode_config_funcs mode_config_funcs = {
+ .fb_create = msm_framebuffer_create,
+ .output_poll_changed = msm_fb_output_poll_changed,
+ .atomic_check = msm_atomic_check,
+ .atomic_commit = msm_atomic_commit,
+};
+
+int msm_register_mmu(struct drm_device *dev, struct msm_mmu *mmu)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+ int idx = priv->num_mmus++;
+
+ if (WARN_ON(idx >= ARRAY_SIZE(priv->mmus)))
+ return -EINVAL;
+
+ priv->mmus[idx] = mmu;
+
+ return idx;
+}
+
+#ifdef CONFIG_DRM_MSM_REGISTER_LOGGING
+static bool reglog = false;
+MODULE_PARM_DESC(reglog, "Enable register read/write logging");
+module_param(reglog, bool, 0600);
+#else
+#define reglog 0
+#endif
+
+#ifdef CONFIG_DRM_MSM_FBDEV
+static bool fbdev = true;
+MODULE_PARM_DESC(fbdev, "Enable fbdev compat layer");
+module_param(fbdev, bool, 0600);
+#endif
+
+static char *vram = "16m";
+MODULE_PARM_DESC(vram, "Configure VRAM size (for devices without IOMMU/GPUMMU");
+module_param(vram, charp, 0);
+
+/*
+ * Util/helpers:
+ */
+
+void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
+ const char *dbgname)
+{
+ struct resource *res;
+ unsigned long size;
+ void __iomem *ptr;
+
+ if (name)
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
+ else
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ if (!res) {
+ dev_err(&pdev->dev, "failed to get memory resource: %s\n", name);
+ return ERR_PTR(-EINVAL);
+ }
+
+ size = resource_size(res);
+
+ ptr = devm_ioremap_nocache(&pdev->dev, res->start, size);
+ if (!ptr) {
+ dev_err(&pdev->dev, "failed to ioremap: %s\n", name);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ if (reglog)
+ printk(KERN_DEBUG "IO:region %s %p %08lx\n", dbgname, ptr, size);
+
+ return ptr;
+}
+
+void msm_writel(u32 data, void __iomem *addr)
+{
+ if (reglog)
+ printk(KERN_DEBUG "IO:W %p %08x\n", addr, data);
+ writel(data, addr);
+}
+
+u32 msm_readl(const void __iomem *addr)
+{
+ u32 val = readl(addr);
+ if (reglog)
+ printk(KERN_ERR "IO:R %p %08x\n", addr, val);
+ return val;
+}
+
+/*
+ * DRM operations:
+ */
+
+static int msm_unload(struct drm_device *dev)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+ struct msm_kms *kms = priv->kms;
+ struct msm_gpu *gpu = priv->gpu;
+
+ drm_kms_helper_poll_fini(dev);
+ drm_mode_config_cleanup(dev);
+ drm_vblank_cleanup(dev);
+
+ pm_runtime_get_sync(dev->dev);
+ drm_irq_uninstall(dev);
+ pm_runtime_put_sync(dev->dev);
+
+ flush_workqueue(priv->wq);
+ destroy_workqueue(priv->wq);
+
+ if (kms) {
+ pm_runtime_disable(dev->dev);
+ kms->funcs->destroy(kms);
+ }
+
+ if (gpu) {
+ mutex_lock(&dev->struct_mutex);
+ gpu->funcs->pm_suspend(gpu);
+ mutex_unlock(&dev->struct_mutex);
+ gpu->funcs->destroy(gpu);
+ }
+
+ if (priv->vram.paddr) {
+ DEFINE_DMA_ATTRS(attrs);
+ dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
+ drm_mm_takedown(&priv->vram.mm);
+ dma_free_attrs(dev->dev, priv->vram.size, NULL,
+ priv->vram.paddr, &attrs);
+ }
+
+ component_unbind_all(dev->dev, dev);
+
+ dev->dev_private = NULL;
+
+ kfree(priv);
+
+ return 0;
+}
+
+static int get_mdp_ver(struct platform_device *pdev)
+{
+#ifdef CONFIG_OF
+ static const struct of_device_id match_types[] = { {
+ .compatible = "qcom,mdss_mdp",
+ .data = (void *)5,
+ }, {
+ /* end node */
+ } };
+ struct device *dev = &pdev->dev;
+ const struct of_device_id *match;
+ match = of_match_node(match_types, dev->of_node);
+ if (match)
+ return (int)(unsigned long)match->data;
+#endif
+ return 4;
+}
+
+#include <linux/of_address.h>
+
+static int msm_init_vram(struct drm_device *dev)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+ unsigned long size = 0;
+ int ret = 0;
+
+#ifdef CONFIG_OF
+ /* In the device-tree world, we could have a 'memory-region'
+ * phandle, which gives us a link to our "vram". Allocating
+ * is all nicely abstracted behind the dma api, but we need
+ * to know the entire size to allocate it all in one go. There
+ * are two cases:
+ * 1) device with no IOMMU, in which case we need exclusive
+ * access to a VRAM carveout big enough for all gpu
+ * buffers
+ * 2) device with IOMMU, but where the bootloader puts up
+ * a splash screen. In this case, the VRAM carveout
+ * need only be large enough for fbdev fb. But we need
+ * exclusive access to the buffer to avoid the kernel
+ * using those pages for other purposes (which appears
+ * as corruption on screen before we have a chance to
+ * load and do initial modeset)
+ */
+ struct device_node *node;
+
+ node = of_parse_phandle(dev->dev->of_node, "memory-region", 0);
+ if (node) {
+ struct resource r;
+ ret = of_address_to_resource(node, 0, &r);
+ if (ret)
+ return ret;
+ size = r.end - r.start;
+ DRM_INFO("using VRAM carveout: %lx@%pa\n", size, &r.start);
+ } else
+#endif
+
+ /* if we have no IOMMU, then we need to use carveout allocator.
+ * Grab the entire CMA chunk carved out in early startup in
+ * mach-msm:
+ */
+ if (!iommu_present(&platform_bus_type)) {
+ DRM_INFO("using %s VRAM carveout\n", vram);
+ size = memparse(vram, NULL);
+ }
+
+ if (size) {
+ DEFINE_DMA_ATTRS(attrs);
+ void *p;
+
+ priv->vram.size = size;
+
+ drm_mm_init(&priv->vram.mm, 0, (size >> PAGE_SHIFT) - 1);
+
+ dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
+ dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
+
+ /* note that for no-kernel-mapping, the vaddr returned
+ * is bogus, but non-null if allocation succeeded:
+ */
+ p = dma_alloc_attrs(dev->dev, size,
+ &priv->vram.paddr, GFP_KERNEL, &attrs);
+ if (!p) {
+ dev_err(dev->dev, "failed to allocate VRAM\n");
+ priv->vram.paddr = 0;
+ return -ENOMEM;
+ }
+
+ dev_info(dev->dev, "VRAM: %08x->%08x\n",
+ (uint32_t)priv->vram.paddr,
+ (uint32_t)(priv->vram.paddr + size));
+ }
+
+ return ret;
+}
+
+static int msm_load(struct drm_device *dev, unsigned long flags)
+{
+ struct platform_device *pdev = dev->platformdev;
+ struct msm_drm_private *priv;
+ struct msm_kms *kms;
+ int ret;
+
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ dev_err(dev->dev, "failed to allocate private data\n");
+ return -ENOMEM;
+ }
+
+ dev->dev_private = priv;
+
+ priv->wq = alloc_ordered_workqueue("msm", 0);
+ init_waitqueue_head(&priv->fence_event);
+ init_waitqueue_head(&priv->pending_crtcs_event);
+
+ INIT_LIST_HEAD(&priv->inactive_list);
+ INIT_LIST_HEAD(&priv->fence_cbs);
+
+ drm_mode_config_init(dev);
+
+ platform_set_drvdata(pdev, dev);
+
+ /* Bind all our sub-components: */
+ ret = component_bind_all(dev->dev, dev);
+ if (ret)
+ return ret;
+
+ ret = msm_init_vram(dev);
+ if (ret)
+ goto fail;
+
+ switch (get_mdp_ver(pdev)) {
+ case 4:
+ kms = mdp4_kms_init(dev);
+ break;
+ case 5:
+ kms = mdp5_kms_init(dev);
+ break;
+ default:
+ kms = ERR_PTR(-ENODEV);
+ break;
+ }
+
+ if (IS_ERR(kms)) {
+ /*
+ * NOTE: once we have GPU support, having no kms should not
+ * be considered fatal.. ideally we would still support gpu
+ * and (for example) use dmabuf/prime to share buffers with
+ * imx drm driver on iMX5
+ */
+ dev_err(dev->dev, "failed to load kms\n");
+ ret = PTR_ERR(kms);
+ goto fail;
+ }
+
+ priv->kms = kms;
+
+ if (kms) {
+ pm_runtime_enable(dev->dev);
+ ret = kms->funcs->hw_init(kms);
+ if (ret) {
+ dev_err(dev->dev, "kms hw init failed: %d\n", ret);
+ goto fail;
+ }
+ }
+
+ dev->mode_config.min_width = 0;
+ dev->mode_config.min_height = 0;
+ dev->mode_config.max_width = 2048;
+ dev->mode_config.max_height = 2048;
+ dev->mode_config.funcs = &mode_config_funcs;
+
+ ret = drm_vblank_init(dev, priv->num_crtcs);
+ if (ret < 0) {
+ dev_err(dev->dev, "failed to initialize vblank\n");
+ goto fail;
+ }
+
+ pm_runtime_get_sync(dev->dev);
+ ret = drm_irq_install(dev, platform_get_irq(dev->platformdev, 0));
+ pm_runtime_put_sync(dev->dev);
+ if (ret < 0) {
+ dev_err(dev->dev, "failed to install IRQ handler\n");
+ goto fail;
+ }
+
+ drm_mode_config_reset(dev);
+
+#ifdef CONFIG_DRM_MSM_FBDEV
+ if (fbdev)
+ priv->fbdev = msm_fbdev_init(dev);
+#endif
+
+ ret = msm_debugfs_late_init(dev);
+ if (ret)
+ goto fail;
+
+ drm_kms_helper_poll_init(dev);
+
+ return 0;
+
+fail:
+ msm_unload(dev);
+ return ret;
+}
+
+static void load_gpu(struct drm_device *dev)
+{
+ static DEFINE_MUTEX(init_lock);
+ struct msm_drm_private *priv = dev->dev_private;
+
+ mutex_lock(&init_lock);
+
+ if (!priv->gpu)
+ priv->gpu = adreno_load_gpu(dev);
+
+ mutex_unlock(&init_lock);
+}
+
+static int msm_open(struct drm_device *dev, struct drm_file *file)
+{
+ struct msm_file_private *ctx;
+
+ /* For now, load gpu on open.. to avoid the requirement of having
+ * firmware in the initrd.
+ */
+ load_gpu(dev);
+
+ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ file->driver_priv = ctx;
+
+ return 0;
+}
+
+static void msm_preclose(struct drm_device *dev, struct drm_file *file)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+ struct msm_file_private *ctx = file->driver_priv;
+ struct msm_kms *kms = priv->kms;
+
+ if (kms)
+ kms->funcs->preclose(kms, file);
+
+ mutex_lock(&dev->struct_mutex);
+ if (ctx == priv->lastctx)
+ priv->lastctx = NULL;
+ mutex_unlock(&dev->struct_mutex);
+
+ kfree(ctx);
+}
+
+static void msm_lastclose(struct drm_device *dev)
+{
+#ifdef CONFIG_DRM_MSM_FBDEV
+ struct msm_drm_private *priv = dev->dev_private;
+ if (priv->fbdev)
+ drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev);
+#endif
+}
+
+static irqreturn_t msm_irq(int irq, void *arg)
+{
+ struct drm_device *dev = arg;
+ struct msm_drm_private *priv = dev->dev_private;
+ struct msm_kms *kms = priv->kms;
+ BUG_ON(!kms);
+ return kms->funcs->irq(kms);
+}
+
+static void msm_irq_preinstall(struct drm_device *dev)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+ struct msm_kms *kms = priv->kms;
+ BUG_ON(!kms);
+ kms->funcs->irq_preinstall(kms);
+}
+
+static int msm_irq_postinstall(struct drm_device *dev)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+ struct msm_kms *kms = priv->kms;
+ BUG_ON(!kms);
+ return kms->funcs->irq_postinstall(kms);
+}
+
+static void msm_irq_uninstall(struct drm_device *dev)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+ struct msm_kms *kms = priv->kms;
+ BUG_ON(!kms);
+ kms->funcs->irq_uninstall(kms);
+}
+
+static int msm_enable_vblank(struct drm_device *dev, int crtc_id)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+ struct msm_kms *kms = priv->kms;
+ if (!kms)
+ return -ENXIO;
+ DBG("dev=%p, crtc=%d", dev, crtc_id);
+ return kms->funcs->enable_vblank(kms, priv->crtcs[crtc_id]);
+}
+
+static void msm_disable_vblank(struct drm_device *dev, int crtc_id)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+ struct msm_kms *kms = priv->kms;
+ if (!kms)
+ return;
+ DBG("dev=%p, crtc=%d", dev, crtc_id);
+ kms->funcs->disable_vblank(kms, priv->crtcs[crtc_id]);
+}
+
+/*
+ * DRM debugfs:
+ */
+
+#ifdef CONFIG_DEBUG_FS
+static int msm_gpu_show(struct drm_device *dev, struct seq_file *m)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+ struct msm_gpu *gpu = priv->gpu;
+
+ if (gpu) {
+ seq_printf(m, "%s Status:\n", gpu->name);
+ gpu->funcs->show(gpu, m);
+ }
+
+ return 0;
+}
+
+static int msm_gem_show(struct drm_device *dev, struct seq_file *m)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+ struct msm_gpu *gpu = priv->gpu;
+
+ if (gpu) {
+ seq_printf(m, "Active Objects (%s):\n", gpu->name);
+ msm_gem_describe_objects(&gpu->active_list, m);
+ }
+
+ seq_printf(m, "Inactive Objects:\n");
+ msm_gem_describe_objects(&priv->inactive_list, m);
+
+ return 0;
+}
+
+static int msm_mm_show(struct drm_device *dev, struct seq_file *m)
+{
+ return drm_mm_dump_table(m, &dev->vma_offset_manager->vm_addr_space_mm);
+}
+
+static int msm_fb_show(struct drm_device *dev, struct seq_file *m)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+ struct drm_framebuffer *fb, *fbdev_fb = NULL;
+
+ if (priv->fbdev) {
+ seq_printf(m, "fbcon ");
+ fbdev_fb = priv->fbdev->fb;
+ msm_framebuffer_describe(fbdev_fb, m);
+ }
+
+ mutex_lock(&dev->mode_config.fb_lock);
+ list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
+ if (fb == fbdev_fb)
+ continue;
+
+ seq_printf(m, "user ");
+ msm_framebuffer_describe(fb, m);
+ }
+ mutex_unlock(&dev->mode_config.fb_lock);
+
+ return 0;
+}
+
+static int show_locked(struct seq_file *m, void *arg)
+{
+ struct drm_info_node *node = (struct drm_info_node *) m->private;
+ struct drm_device *dev = node->minor->dev;
+ int (*show)(struct drm_device *dev, struct seq_file *m) =
+ node->info_ent->data;
+ int ret;
+
+ ret = mutex_lock_interruptible(&dev->struct_mutex);
+ if (ret)
+ return ret;
+
+ ret = show(dev, m);
+
+ mutex_unlock(&dev->struct_mutex);
+
+ return ret;
+}
+
+static struct drm_info_list msm_debugfs_list[] = {
+ {"gpu", show_locked, 0, msm_gpu_show},
+ {"gem", show_locked, 0, msm_gem_show},
+ { "mm", show_locked, 0, msm_mm_show },
+ { "fb", show_locked, 0, msm_fb_show },
+};
+
+static int late_init_minor(struct drm_minor *minor)
+{
+ int ret;
+
+ if (!minor)
+ return 0;
+
+ ret = msm_rd_debugfs_init(minor);
+ if (ret) {
+ dev_err(minor->dev->dev, "could not install rd debugfs\n");
+ return ret;
+ }
+
+ ret = msm_perf_debugfs_init(minor);
+ if (ret) {
+ dev_err(minor->dev->dev, "could not install perf debugfs\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+int msm_debugfs_late_init(struct drm_device *dev)
+{
+ int ret;
+ ret = late_init_minor(dev->primary);
+ if (ret)
+ return ret;
+ ret = late_init_minor(dev->render);
+ if (ret)
+ return ret;
+ ret = late_init_minor(dev->control);
+ return ret;
+}
+
+static int msm_debugfs_init(struct drm_minor *minor)
+{
+ struct drm_device *dev = minor->dev;
+ int ret;
+
+ ret = drm_debugfs_create_files(msm_debugfs_list,
+ ARRAY_SIZE(msm_debugfs_list),
+ minor->debugfs_root, minor);
+
+ if (ret) {
+ dev_err(dev->dev, "could not install msm_debugfs_list\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static void msm_debugfs_cleanup(struct drm_minor *minor)
+{
+ drm_debugfs_remove_files(msm_debugfs_list,
+ ARRAY_SIZE(msm_debugfs_list), minor);
+ if (!minor->dev->dev_private)
+ return;
+ msm_rd_debugfs_cleanup(minor);
+ msm_perf_debugfs_cleanup(minor);
+}
+#endif
+
+/*
+ * Fences:
+ */
+
+int msm_wait_fence_interruptable(struct drm_device *dev, uint32_t fence,
+ struct timespec *timeout)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+ int ret;
+
+ if (!priv->gpu)
+ return 0;
+
+ if (fence > priv->gpu->submitted_fence) {
+ DRM_ERROR("waiting on invalid fence: %u (of %u)\n",
+ fence, priv->gpu->submitted_fence);
+ return -EINVAL;
+ }
+
+ if (!timeout) {
+ /* no-wait: */
+ ret = fence_completed(dev, fence) ? 0 : -EBUSY;
+ } else {
+ unsigned long timeout_jiffies = timespec_to_jiffies(timeout);
+ unsigned long start_jiffies = jiffies;
+ unsigned long remaining_jiffies;
+
+ if (time_after(start_jiffies, timeout_jiffies))
+ remaining_jiffies = 0;
+ else
+ remaining_jiffies = timeout_jiffies - start_jiffies;
+
+ ret = wait_event_interruptible_timeout(priv->fence_event,
+ fence_completed(dev, fence),
+ remaining_jiffies);
+
+ if (ret == 0) {
+ DBG("timeout waiting for fence: %u (completed: %u)",
+ fence, priv->completed_fence);
+ ret = -ETIMEDOUT;
+ } else if (ret != -ERESTARTSYS) {
+ ret = 0;
+ }
+ }
+
+ return ret;
+}
+
+int msm_queue_fence_cb(struct drm_device *dev,
+ struct msm_fence_cb *cb, uint32_t fence)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+ int ret = 0;
+
+ mutex_lock(&dev->struct_mutex);
+ if (!list_empty(&cb->work.entry)) {
+ ret = -EINVAL;
+ } else if (fence > priv->completed_fence) {
+ cb->fence = fence;
+ list_add_tail(&cb->work.entry, &priv->fence_cbs);
+ } else {
+ queue_work(priv->wq, &cb->work);
+ }
+ mutex_unlock(&dev->struct_mutex);
+
+ return ret;
+}
+
+/* called from workqueue */
+void msm_update_fence(struct drm_device *dev, uint32_t fence)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+
+ mutex_lock(&dev->struct_mutex);
+ priv->completed_fence = max(fence, priv->completed_fence);
+
+ while (!list_empty(&priv->fence_cbs)) {
+ struct msm_fence_cb *cb;
+
+ cb = list_first_entry(&priv->fence_cbs,
+ struct msm_fence_cb, work.entry);
+
+ if (cb->fence > priv->completed_fence)
+ break;
+
+ list_del_init(&cb->work.entry);
+ queue_work(priv->wq, &cb->work);
+ }
+
+ mutex_unlock(&dev->struct_mutex);
+
+ wake_up_all(&priv->fence_event);
+}
+
+void __msm_fence_worker(struct work_struct *work)
+{
+ struct msm_fence_cb *cb = container_of(work, struct msm_fence_cb, work);
+ cb->func(cb);
+}
+
+/*
+ * DRM ioctls:
+ */
+
+static int msm_ioctl_get_param(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct msm_drm_private *priv = dev->dev_private;
+ struct drm_msm_param *args = data;
+ struct msm_gpu *gpu;
+
+ /* for now, we just have 3d pipe.. eventually this would need to
+ * be more clever to dispatch to appropriate gpu module:
+ */
+ if (args->pipe != MSM_PIPE_3D0)
+ return -EINVAL;
+
+ gpu = priv->gpu;
+
+ if (!gpu)
+ return -ENXIO;
+
+ return gpu->funcs->get_param(gpu, args->param, &args->value);
+}
+
+static int msm_ioctl_gem_new(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_msm_gem_new *args = data;
+
+ if (args->flags & ~MSM_BO_FLAGS) {
+ DRM_ERROR("invalid flags: %08x\n", args->flags);
+ return -EINVAL;
+ }
+
+ return msm_gem_new_handle(dev, file, args->size,
+ args->flags, &args->handle);
+}
+
+#define TS(t) ((struct timespec){ .tv_sec = (t).tv_sec, .tv_nsec = (t).tv_nsec })
+
+static int msm_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_msm_gem_cpu_prep *args = data;
+ struct drm_gem_object *obj;
+ int ret;
+
+ if (args->op & ~MSM_PREP_FLAGS) {
+ DRM_ERROR("invalid op: %08x\n", args->op);
+ return -EINVAL;
+ }
+
+ obj = drm_gem_object_lookup(dev, file, args->handle);
+ if (!obj)
+ return -ENOENT;
+
+ ret = msm_gem_cpu_prep(obj, args->op, &TS(args->timeout));
+
+ drm_gem_object_unreference_unlocked(obj);
+
+ return ret;
+}
+
+static int msm_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_msm_gem_cpu_fini *args = data;
+ struct drm_gem_object *obj;
+ int ret;
+
+ obj = drm_gem_object_lookup(dev, file, args->handle);
+ if (!obj)
+ return -ENOENT;
+
+ ret = msm_gem_cpu_fini(obj);
+
+ drm_gem_object_unreference_unlocked(obj);
+
+ return ret;
+}
+
+static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_msm_gem_info *args = data;
+ struct drm_gem_object *obj;
+ int ret = 0;
+
+ if (args->pad)
+ return -EINVAL;
+
+ obj = drm_gem_object_lookup(dev, file, args->handle);
+ if (!obj)
+ return -ENOENT;
+
+ args->offset = msm_gem_mmap_offset(obj);
+
+ drm_gem_object_unreference_unlocked(obj);
+
+ return ret;
+}
+
+static int msm_ioctl_wait_fence(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_msm_wait_fence *args = data;
+
+ if (args->pad) {
+ DRM_ERROR("invalid pad: %08x\n", args->pad);
+ return -EINVAL;
+ }
+
+ return msm_wait_fence_interruptable(dev, args->fence,
+ &TS(args->timeout));
+}
+
+static const struct drm_ioctl_desc msm_ioctls[] = {
+ DRM_IOCTL_DEF_DRV(MSM_GET_PARAM, msm_ioctl_get_param, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(MSM_GEM_NEW, msm_ioctl_gem_new, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(MSM_GEM_INFO, msm_ioctl_gem_info, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_PREP, msm_ioctl_gem_cpu_prep, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI, msm_ioctl_gem_cpu_fini, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT, msm_ioctl_gem_submit, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE, msm_ioctl_wait_fence, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
+};
+
+static const struct vm_operations_struct vm_ops = {
+ .fault = msm_gem_fault,
+ .open = drm_gem_vm_open,
+ .close = drm_gem_vm_close,
+};
+
+static const struct file_operations fops = {
+ .owner = THIS_MODULE,
+ .open = drm_open,
+ .release = drm_release,
+ .unlocked_ioctl = drm_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = drm_compat_ioctl,
+#endif
+ .poll = drm_poll,
+ .read = drm_read,
+ .llseek = no_llseek,
+ .mmap = msm_gem_mmap,
+};
+
+static struct drm_driver msm_driver = {
+ .driver_features = DRIVER_HAVE_IRQ |
+ DRIVER_GEM |
+ DRIVER_PRIME |
+ DRIVER_RENDER |
+ DRIVER_MODESET,
+ .load = msm_load,
+ .unload = msm_unload,
+ .open = msm_open,
+ .preclose = msm_preclose,
+ .lastclose = msm_lastclose,
+ .set_busid = drm_platform_set_busid,
+ .irq_handler = msm_irq,
+ .irq_preinstall = msm_irq_preinstall,
+ .irq_postinstall = msm_irq_postinstall,
+ .irq_uninstall = msm_irq_uninstall,
+ .get_vblank_counter = drm_vblank_count,
+ .enable_vblank = msm_enable_vblank,
+ .disable_vblank = msm_disable_vblank,
+ .gem_free_object = msm_gem_free_object,
+ .gem_vm_ops = &vm_ops,
+ .dumb_create = msm_gem_dumb_create,
+ .dumb_map_offset = msm_gem_dumb_map_offset,
+ .dumb_destroy = drm_gem_dumb_destroy,
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_export = drm_gem_prime_export,
+ .gem_prime_import = drm_gem_prime_import,
+ .gem_prime_pin = msm_gem_prime_pin,
+ .gem_prime_unpin = msm_gem_prime_unpin,
+ .gem_prime_get_sg_table = msm_gem_prime_get_sg_table,
+ .gem_prime_import_sg_table = msm_gem_prime_import_sg_table,
+ .gem_prime_vmap = msm_gem_prime_vmap,
+ .gem_prime_vunmap = msm_gem_prime_vunmap,
+ .gem_prime_mmap = msm_gem_prime_mmap,
+#ifdef CONFIG_DEBUG_FS
+ .debugfs_init = msm_debugfs_init,
+ .debugfs_cleanup = msm_debugfs_cleanup,
+#endif
+ .ioctls = msm_ioctls,
+ .num_ioctls = DRM_MSM_NUM_IOCTLS,
+ .fops = &fops,
+ .name = "msm",
+ .desc = "MSM Snapdragon DRM",
+ .date = "20130625",
+ .major = 1,
+ .minor = 0,
+};
+
+#ifdef CONFIG_PM_SLEEP
+static int msm_pm_suspend(struct device *dev)
+{
+ struct drm_device *ddev = dev_get_drvdata(dev);
+
+ drm_kms_helper_poll_disable(ddev);
+
+ return 0;
+}
+
+static int msm_pm_resume(struct device *dev)
+{
+ struct drm_device *ddev = dev_get_drvdata(dev);
+
+ drm_kms_helper_poll_enable(ddev);
+
+ return 0;
+}
+#endif
+
+static const struct dev_pm_ops msm_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(msm_pm_suspend, msm_pm_resume)
+};
+
+/*
+ * Componentized driver support:
+ */
+
+#ifdef CONFIG_OF
+/* NOTE: the CONFIG_OF case duplicates the same code as exynos or imx
+ * (or probably any other).. so probably some room for some helpers
+ */
+static int compare_of(struct device *dev, void *data)
+{
+ return dev->of_node == data;
+}
+
+static int add_components(struct device *dev, struct component_match **matchptr,
+ const char *name)
+{
+ struct device_node *np = dev->of_node;
+ unsigned i;
+
+ for (i = 0; ; i++) {
+ struct device_node *node;
+
+ node = of_parse_phandle(np, name, i);
+ if (!node)
+ break;
+
+ component_match_add(dev, matchptr, compare_of, node);
+ }
+
+ return 0;
+}
+#else
+static int compare_dev(struct device *dev, void *data)
+{
+ return dev == data;
+}
+#endif
+
+static int msm_drm_bind(struct device *dev)
+{
+ return drm_platform_init(&msm_driver, to_platform_device(dev));
+}
+
+static void msm_drm_unbind(struct device *dev)
+{
+ drm_put_dev(platform_get_drvdata(to_platform_device(dev)));
+}
+
+static const struct component_master_ops msm_drm_ops = {
+ .bind = msm_drm_bind,
+ .unbind = msm_drm_unbind,
+};
+
+/*
+ * Platform driver:
+ */
+
+static int msm_pdev_probe(struct platform_device *pdev)
+{
+ struct component_match *match = NULL;
+#ifdef CONFIG_OF
+ add_components(&pdev->dev, &match, "connectors");
+ add_components(&pdev->dev, &match, "gpus");
+#else
+ /* For non-DT case, it kinda sucks. We don't actually have a way
+ * to know whether or not we are waiting for certain devices (or if
+ * they are simply not present). But for non-DT we only need to
+ * care about apq8064/apq8060/etc (all mdp4/a3xx):
+ */
+ static const char *devnames[] = {
+ "hdmi_msm.0", "kgsl-3d0.0",
+ };
+ int i;
+
+ DBG("Adding components..");
+
+ for (i = 0; i < ARRAY_SIZE(devnames); i++) {
+ struct device *dev;
+
+ dev = bus_find_device_by_name(&platform_bus_type,
+ NULL, devnames[i]);
+ if (!dev) {
+ dev_info(&pdev->dev, "still waiting for %s\n", devnames[i]);
+ return -EPROBE_DEFER;
+ }
+
+ component_match_add(&pdev->dev, &match, compare_dev, dev);
+ }
+#endif
+
+ pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+ return component_master_add_with_match(&pdev->dev, &msm_drm_ops, match);
+}
+
+static int msm_pdev_remove(struct platform_device *pdev)
+{
+ component_master_del(&pdev->dev, &msm_drm_ops);
+
+ return 0;
+}
+
+static const struct platform_device_id msm_id[] = {
+ { "mdp", 0 },
+ { }
+};
+
+static const struct of_device_id dt_match[] = {
+ { .compatible = "qcom,mdp" }, /* mdp4 */
+ { .compatible = "qcom,mdss_mdp" }, /* mdp5 */
+ {}
+};
+MODULE_DEVICE_TABLE(of, dt_match);
+
+static struct platform_driver msm_platform_driver = {
+ .probe = msm_pdev_probe,
+ .remove = msm_pdev_remove,
+ .driver = {
+ .name = "msm",
+ .of_match_table = dt_match,
+ .pm = &msm_pm_ops,
+ },
+ .id_table = msm_id,
+};
+
+static int __init msm_drm_register(void)
+{
+ DBG("init");
+ msm_dsi_register();
+ msm_edp_register();
+ hdmi_register();
+ adreno_register();
+ return platform_driver_register(&msm_platform_driver);
+}
+
+static void __exit msm_drm_unregister(void)
+{
+ DBG("fini");
+ platform_driver_unregister(&msm_platform_driver);
+ hdmi_unregister();
+ adreno_unregister();
+ msm_edp_unregister();
+ msm_dsi_unregister();
+}
+
+module_init(msm_drm_register);
+module_exit(msm_drm_unregister);
+
+MODULE_AUTHOR("Rob Clark <robdclark@gmail.com");
+MODULE_DESCRIPTION("MSM DRM Driver");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff