diff options
Diffstat (limited to 'drivers/gpu/drm/msm/msm_drv.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_drv.c | 776 |
1 files changed, 776 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c new file mode 100644 index 00000000000..864c9773636 --- /dev/null +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -0,0 +1,776 @@ +/* + * 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 <mach/iommu.h> + +static void msm_fb_output_poll_changed(struct drm_device *dev) +{ + struct msm_drm_private *priv = dev->dev_private; + if (priv->fbdev) + drm_fb_helper_hotplug_event(priv->fbdev); +} + +static const struct drm_mode_config_funcs mode_config_funcs = { + .fb_create = msm_framebuffer_create, + .output_poll_changed = msm_fb_output_poll_changed, +}; + +static int msm_fault_handler(struct iommu_domain *iommu, struct device *dev, + unsigned long iova, int flags, void *arg) +{ + DBG("*** fault: iova=%08lx, flags=%d", iova, flags); + return 0; +} + +int msm_register_iommu(struct drm_device *dev, struct iommu_domain *iommu) +{ + struct msm_drm_private *priv = dev->dev_private; + int idx = priv->num_iommus++; + + if (WARN_ON(idx >= ARRAY_SIZE(priv->iommus))) + return -EINVAL; + + priv->iommus[idx] = iommu; + + iommu_set_fault_handler(iommu, msm_fault_handler, dev); + + /* need to iommu_attach_device() somewhere?? on resume?? */ + + return idx; +} + +int msm_iommu_attach(struct drm_device *dev, struct iommu_domain *iommu, + const char **names, int cnt) +{ + int i, ret; + + for (i = 0; i < cnt; i++) { + struct device *ctx = msm_iommu_get_ctx(names[i]); + if (!ctx) + continue; + ret = iommu_attach_device(iommu, ctx); + if (ret) { + dev_warn(dev->dev, "could not attach iommu to %s", names[i]); + return ret; + } + } + return 0; +} + +#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 + +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 %08x %08lx\n", dbgname, (u32)ptr, size); + + return ptr; +} + +void msm_writel(u32 data, void __iomem *addr) +{ + if (reglog) + printk(KERN_DEBUG "IO:W %08x %08x\n", (u32)addr, data); + writel(data, addr); +} + +u32 msm_readl(const void __iomem *addr) +{ + u32 val = readl(addr); + if (reglog) + printk(KERN_ERR "IO:R %08x %08x\n", (u32)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); + gpu->funcs->destroy(gpu); + mutex_unlock(&dev->struct_mutex); + } + + dev->dev_private = NULL; + + kfree(priv); + + return 0; +} + +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_LIST_HEAD(&priv->inactive_list); + + drm_mode_config_init(dev); + + kms = mdp4_kms_init(dev); + 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(priv->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, 1); + 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); + pm_runtime_put_sync(dev->dev); + if (ret < 0) { + dev_err(dev->dev, "failed to install IRQ handler\n"); + goto fail; + } + + platform_set_drvdata(pdev, dev); + +#ifdef CONFIG_DRM_MSM_FBDEV + priv->fbdev = msm_fbdev_init(dev); +#endif + + drm_kms_helper_poll_init(dev); + + return 0; + +fail: + msm_unload(dev); + return ret; +} + +static void load_gpu(struct drm_device *dev) +{ + struct msm_drm_private *priv = dev->dev_private; + struct msm_gpu *gpu; + + if (priv->gpu) + return; + + mutex_lock(&dev->struct_mutex); + gpu = a3xx_gpu_init(dev); + if (IS_ERR(gpu)) { + dev_warn(dev->dev, "failed to load a3xx gpu\n"); + gpu = NULL; + /* not fatal */ + } + mutex_unlock(&dev->struct_mutex); + + if (gpu) { + int ret; + gpu->funcs->pm_resume(gpu); + ret = gpu->funcs->hw_init(gpu); + if (ret) { + dev_err(dev->dev, "gpu hw init failed: %d\n", ret); + gpu->funcs->destroy(gpu); + gpu = NULL; + } + } + + priv->gpu = gpu; +} + +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) +{ + struct msm_drm_private *priv = dev->dev_private; + if (priv->fbdev) { + drm_modeset_lock_all(dev); + drm_fb_helper_restore_fbdev_mode(priv->fbdev); + drm_modeset_unlock_all(dev); + } +} + +static irqreturn_t msm_irq(DRM_IRQ_ARGS) +{ + 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->mm_private); +} + +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 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 ret; +} + +static void msm_debugfs_cleanup(struct drm_minor *minor) +{ + drm_debugfs_remove_files(msm_debugfs_list, + ARRAY_SIZE(msm_debugfs_list), 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; + unsigned long timeout_jiffies = timespec_to_jiffies(timeout); + unsigned long start_jiffies = jiffies; + unsigned long remaining_jiffies; + int ret; + + 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, + priv->completed_fence >= 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; +} + +/* call under struct_mutex */ +void msm_update_fence(struct drm_device *dev, uint32_t fence) +{ + struct msm_drm_private *priv = dev->dev_private; + + if (fence > priv->completed_fence) { + priv->completed_fence = fence; + wake_up_all(&priv->fence_event); + } +} + +/* + * 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; + 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; + + 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; + 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_IOCTL_DEF_DRV(MSM_GEM_NEW, msm_ioctl_gem_new, DRM_UNLOCKED|DRM_AUTH), + DRM_IOCTL_DEF_DRV(MSM_GEM_INFO, msm_ioctl_gem_info, DRM_UNLOCKED|DRM_AUTH), + DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_PREP, msm_ioctl_gem_cpu_prep, DRM_UNLOCKED|DRM_AUTH), + DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI, msm_ioctl_gem_cpu_fini, DRM_UNLOCKED|DRM_AUTH), + DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT, msm_ioctl_gem_submit, DRM_UNLOCKED|DRM_AUTH), + DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE, msm_ioctl_wait_fence, DRM_UNLOCKED|DRM_AUTH), +}; + +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_MODESET, + .load = msm_load, + .unload = msm_unload, + .open = msm_open, + .preclose = msm_preclose, + .lastclose = msm_lastclose, + .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 = msm_gem_dumb_destroy, +#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) +}; + +/* + * Platform driver: + */ + +static int msm_pdev_probe(struct platform_device *pdev) +{ + return drm_platform_init(&msm_driver, pdev); +} + +static int msm_pdev_remove(struct platform_device *pdev) +{ + drm_platform_exit(&msm_driver, pdev); + + return 0; +} + +static const struct platform_device_id msm_id[] = { + { "mdp", 0 }, + { } +}; + +static struct platform_driver msm_platform_driver = { + .probe = msm_pdev_probe, + .remove = msm_pdev_remove, + .driver = { + .owner = THIS_MODULE, + .name = "msm", + .pm = &msm_pm_ops, + }, + .id_table = msm_id, +}; + +static int __init msm_drm_register(void) +{ + DBG("init"); + hdmi_register(); + a3xx_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(); + a3xx_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"); |