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Diffstat (limited to 'drivers/gpu/host1x/drm/drm.c')
-rw-r--r--drivers/gpu/host1x/drm/drm.c647
1 files changed, 0 insertions, 647 deletions
diff --git a/drivers/gpu/host1x/drm/drm.c b/drivers/gpu/host1x/drm/drm.c
deleted file mode 100644
index 8c61cee..0000000
--- a/drivers/gpu/host1x/drm/drm.c
+++ /dev/null
@@ -1,647 +0,0 @@
-/*
- * Copyright (C) 2012 Avionic Design GmbH
- * Copyright (C) 2012-2013 NVIDIA CORPORATION. All rights reserved.
- *
- * 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.
- */
-
-#include <linux/module.h>
-#include <linux/of_address.h>
-#include <linux/of_platform.h>
-
-#include <linux/dma-mapping.h>
-#include <asm/dma-iommu.h>
-
-#include <drm/drm.h>
-#include <drm/drmP.h>
-
-#include "host1x_client.h"
-#include "dev.h"
-#include "drm.h"
-#include "gem.h"
-#include "syncpt.h"
-
-#define DRIVER_NAME "tegra"
-#define DRIVER_DESC "NVIDIA Tegra graphics"
-#define DRIVER_DATE "20120330"
-#define DRIVER_MAJOR 0
-#define DRIVER_MINOR 0
-#define DRIVER_PATCHLEVEL 0
-
-struct host1x_drm_client {
- struct host1x_client *client;
- struct device_node *np;
- struct list_head list;
-};
-
-static int host1x_add_drm_client(struct host1x_drm *host1x,
- struct device_node *np)
-{
- struct host1x_drm_client *client;
-
- client = kzalloc(sizeof(*client), GFP_KERNEL);
- if (!client)
- return -ENOMEM;
-
- INIT_LIST_HEAD(&client->list);
- client->np = of_node_get(np);
-
- list_add_tail(&client->list, &host1x->drm_clients);
-
- return 0;
-}
-
-static int host1x_activate_drm_client(struct host1x_drm *host1x,
- struct host1x_drm_client *drm,
- struct host1x_client *client)
-{
- mutex_lock(&host1x->drm_clients_lock);
- list_del_init(&drm->list);
- list_add_tail(&drm->list, &host1x->drm_active);
- drm->client = client;
- mutex_unlock(&host1x->drm_clients_lock);
-
- return 0;
-}
-
-static int host1x_remove_drm_client(struct host1x_drm *host1x,
- struct host1x_drm_client *client)
-{
- mutex_lock(&host1x->drm_clients_lock);
- list_del_init(&client->list);
- mutex_unlock(&host1x->drm_clients_lock);
-
- of_node_put(client->np);
- kfree(client);
-
- return 0;
-}
-
-static int host1x_parse_dt(struct host1x_drm *host1x)
-{
- static const char * const compat[] = {
- "nvidia,tegra20-dc",
- "nvidia,tegra20-hdmi",
- "nvidia,tegra20-gr2d",
- "nvidia,tegra30-dc",
- "nvidia,tegra30-hdmi",
- "nvidia,tegra30-gr2d",
- };
- unsigned int i;
- int err;
-
- for (i = 0; i < ARRAY_SIZE(compat); i++) {
- struct device_node *np;
-
- for_each_child_of_node(host1x->dev->of_node, np) {
- if (of_device_is_compatible(np, compat[i]) &&
- of_device_is_available(np)) {
- err = host1x_add_drm_client(host1x, np);
- if (err < 0)
- return err;
- }
- }
- }
-
- return 0;
-}
-
-int host1x_drm_alloc(struct platform_device *pdev)
-{
- struct host1x_drm *host1x;
- int err;
-
- host1x = devm_kzalloc(&pdev->dev, sizeof(*host1x), GFP_KERNEL);
- if (!host1x)
- return -ENOMEM;
-
- mutex_init(&host1x->drm_clients_lock);
- INIT_LIST_HEAD(&host1x->drm_clients);
- INIT_LIST_HEAD(&host1x->drm_active);
- mutex_init(&host1x->clients_lock);
- INIT_LIST_HEAD(&host1x->clients);
- host1x->dev = &pdev->dev;
-
- err = host1x_parse_dt(host1x);
- if (err < 0) {
- dev_err(&pdev->dev, "failed to parse DT: %d\n", err);
- return err;
- }
-
- host1x_set_drm_data(&pdev->dev, host1x);
-
- return 0;
-}
-
-int host1x_drm_init(struct host1x_drm *host1x, struct drm_device *drm)
-{
- struct host1x_client *client;
-
- mutex_lock(&host1x->clients_lock);
-
- list_for_each_entry(client, &host1x->clients, list) {
- if (client->ops && client->ops->drm_init) {
- int err = client->ops->drm_init(client, drm);
- if (err < 0) {
- dev_err(host1x->dev,
- "DRM setup failed for %s: %d\n",
- dev_name(client->dev), err);
- mutex_unlock(&host1x->clients_lock);
- return err;
- }
- }
- }
-
- mutex_unlock(&host1x->clients_lock);
-
- return 0;
-}
-
-int host1x_drm_exit(struct host1x_drm *host1x)
-{
- struct platform_device *pdev = to_platform_device(host1x->dev);
- struct host1x_client *client;
-
- if (!host1x->drm)
- return 0;
-
- mutex_lock(&host1x->clients_lock);
-
- list_for_each_entry_reverse(client, &host1x->clients, list) {
- if (client->ops && client->ops->drm_exit) {
- int err = client->ops->drm_exit(client);
- if (err < 0) {
- dev_err(host1x->dev,
- "DRM cleanup failed for %s: %d\n",
- dev_name(client->dev), err);
- mutex_unlock(&host1x->clients_lock);
- return err;
- }
- }
- }
-
- mutex_unlock(&host1x->clients_lock);
-
- drm_platform_exit(&tegra_drm_driver, pdev);
- host1x->drm = NULL;
-
- return 0;
-}
-
-int host1x_register_client(struct host1x_drm *host1x,
- struct host1x_client *client)
-{
- struct host1x_drm_client *drm, *tmp;
- int err;
-
- mutex_lock(&host1x->clients_lock);
- list_add_tail(&client->list, &host1x->clients);
- mutex_unlock(&host1x->clients_lock);
-
- list_for_each_entry_safe(drm, tmp, &host1x->drm_clients, list)
- if (drm->np == client->dev->of_node)
- host1x_activate_drm_client(host1x, drm, client);
-
- if (list_empty(&host1x->drm_clients)) {
- struct platform_device *pdev = to_platform_device(host1x->dev);
-
- err = drm_platform_init(&tegra_drm_driver, pdev);
- if (err < 0) {
- dev_err(host1x->dev, "drm_platform_init(): %d\n", err);
- return err;
- }
- }
-
- return 0;
-}
-
-int host1x_unregister_client(struct host1x_drm *host1x,
- struct host1x_client *client)
-{
- struct host1x_drm_client *drm, *tmp;
- int err;
-
- list_for_each_entry_safe(drm, tmp, &host1x->drm_active, list) {
- if (drm->client == client) {
- err = host1x_drm_exit(host1x);
- if (err < 0) {
- dev_err(host1x->dev, "host1x_drm_exit(): %d\n",
- err);
- return err;
- }
-
- host1x_remove_drm_client(host1x, drm);
- break;
- }
- }
-
- mutex_lock(&host1x->clients_lock);
- list_del_init(&client->list);
- mutex_unlock(&host1x->clients_lock);
-
- return 0;
-}
-
-static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
-{
- struct host1x_drm *host1x;
- int err;
-
- host1x = host1x_get_drm_data(drm->dev);
- drm->dev_private = host1x;
- host1x->drm = drm;
-
- drm_mode_config_init(drm);
-
- err = host1x_drm_init(host1x, drm);
- if (err < 0)
- return err;
-
- /*
- * We don't use the drm_irq_install() helpers provided by the DRM
- * core, so we need to set this manually in order to allow the
- * DRM_IOCTL_WAIT_VBLANK to operate correctly.
- */
- drm->irq_enabled = 1;
-
- err = drm_vblank_init(drm, drm->mode_config.num_crtc);
- if (err < 0)
- return err;
-
- err = tegra_drm_fb_init(drm);
- if (err < 0)
- return err;
-
- drm_kms_helper_poll_init(drm);
-
- return 0;
-}
-
-static int tegra_drm_unload(struct drm_device *drm)
-{
- drm_kms_helper_poll_fini(drm);
- tegra_drm_fb_exit(drm);
-
- drm_mode_config_cleanup(drm);
-
- return 0;
-}
-
-static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
-{
- struct host1x_drm_file *fpriv;
-
- fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
- if (!fpriv)
- return -ENOMEM;
-
- INIT_LIST_HEAD(&fpriv->contexts);
- filp->driver_priv = fpriv;
-
- return 0;
-}
-
-static void host1x_drm_context_free(struct host1x_drm_context *context)
-{
- context->client->ops->close_channel(context);
- kfree(context);
-}
-
-static void tegra_drm_lastclose(struct drm_device *drm)
-{
- struct host1x_drm *host1x = drm->dev_private;
-
- tegra_fbdev_restore_mode(host1x->fbdev);
-}
-
-#ifdef CONFIG_DRM_TEGRA_STAGING
-static bool host1x_drm_file_owns_context(struct host1x_drm_file *file,
- struct host1x_drm_context *context)
-{
- struct host1x_drm_context *ctx;
-
- list_for_each_entry(ctx, &file->contexts, list)
- if (ctx == context)
- return true;
-
- return false;
-}
-
-static int tegra_gem_create(struct drm_device *drm, void *data,
- struct drm_file *file)
-{
- struct drm_tegra_gem_create *args = data;
- struct tegra_bo *bo;
-
- bo = tegra_bo_create_with_handle(file, drm, args->size,
- &args->handle);
- if (IS_ERR(bo))
- return PTR_ERR(bo);
-
- return 0;
-}
-
-static int tegra_gem_mmap(struct drm_device *drm, void *data,
- struct drm_file *file)
-{
- struct drm_tegra_gem_mmap *args = data;
- struct drm_gem_object *gem;
- struct tegra_bo *bo;
-
- gem = drm_gem_object_lookup(drm, file, args->handle);
- if (!gem)
- return -EINVAL;
-
- bo = to_tegra_bo(gem);
-
- args->offset = drm_vma_node_offset_addr(&bo->gem.vma_node);
-
- drm_gem_object_unreference(gem);
-
- return 0;
-}
-
-static int tegra_syncpt_read(struct drm_device *drm, void *data,
- struct drm_file *file)
-{
- struct drm_tegra_syncpt_read *args = data;
- struct host1x *host = dev_get_drvdata(drm->dev);
- struct host1x_syncpt *sp = host1x_syncpt_get(host, args->id);
-
- if (!sp)
- return -EINVAL;
-
- args->value = host1x_syncpt_read_min(sp);
- return 0;
-}
-
-static int tegra_syncpt_incr(struct drm_device *drm, void *data,
- struct drm_file *file)
-{
- struct drm_tegra_syncpt_incr *args = data;
- struct host1x *host = dev_get_drvdata(drm->dev);
- struct host1x_syncpt *sp = host1x_syncpt_get(host, args->id);
-
- if (!sp)
- return -EINVAL;
-
- return host1x_syncpt_incr(sp);
-}
-
-static int tegra_syncpt_wait(struct drm_device *drm, void *data,
- struct drm_file *file)
-{
- struct drm_tegra_syncpt_wait *args = data;
- struct host1x *host = dev_get_drvdata(drm->dev);
- struct host1x_syncpt *sp = host1x_syncpt_get(host, args->id);
-
- if (!sp)
- return -EINVAL;
-
- return host1x_syncpt_wait(sp, args->thresh, args->timeout,
- &args->value);
-}
-
-static int tegra_open_channel(struct drm_device *drm, void *data,
- struct drm_file *file)
-{
- struct drm_tegra_open_channel *args = data;
- struct host1x_client *client;
- struct host1x_drm_context *context;
- struct host1x_drm_file *fpriv = file->driver_priv;
- struct host1x_drm *host1x = drm->dev_private;
- int err = -ENODEV;
-
- context = kzalloc(sizeof(*context), GFP_KERNEL);
- if (!context)
- return -ENOMEM;
-
- list_for_each_entry(client, &host1x->clients, list)
- if (client->class == args->client) {
- err = client->ops->open_channel(client, context);
- if (err)
- break;
-
- context->client = client;
- list_add(&context->list, &fpriv->contexts);
- args->context = (uintptr_t)context;
- return 0;
- }
-
- kfree(context);
- return err;
-}
-
-static int tegra_close_channel(struct drm_device *drm, void *data,
- struct drm_file *file)
-{
- struct drm_tegra_close_channel *args = data;
- struct host1x_drm_file *fpriv = file->driver_priv;
- struct host1x_drm_context *context =
- (struct host1x_drm_context *)(uintptr_t)args->context;
-
- if (!host1x_drm_file_owns_context(fpriv, context))
- return -EINVAL;
-
- list_del(&context->list);
- host1x_drm_context_free(context);
-
- return 0;
-}
-
-static int tegra_get_syncpt(struct drm_device *drm, void *data,
- struct drm_file *file)
-{
- struct drm_tegra_get_syncpt *args = data;
- struct host1x_drm_file *fpriv = file->driver_priv;
- struct host1x_drm_context *context =
- (struct host1x_drm_context *)(uintptr_t)args->context;
- struct host1x_syncpt *syncpt;
-
- if (!host1x_drm_file_owns_context(fpriv, context))
- return -ENODEV;
-
- if (args->index >= context->client->num_syncpts)
- return -EINVAL;
-
- syncpt = context->client->syncpts[args->index];
- args->id = host1x_syncpt_id(syncpt);
-
- return 0;
-}
-
-static int tegra_submit(struct drm_device *drm, void *data,
- struct drm_file *file)
-{
- struct drm_tegra_submit *args = data;
- struct host1x_drm_file *fpriv = file->driver_priv;
- struct host1x_drm_context *context =
- (struct host1x_drm_context *)(uintptr_t)args->context;
-
- if (!host1x_drm_file_owns_context(fpriv, context))
- return -ENODEV;
-
- return context->client->ops->submit(context, args, drm, file);
-}
-#endif
-
-static const struct drm_ioctl_desc tegra_drm_ioctls[] = {
-#ifdef CONFIG_DRM_TEGRA_STAGING
- DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create, DRM_UNLOCKED | DRM_AUTH),
- DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, DRM_UNLOCKED),
- DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read, DRM_UNLOCKED),
- DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr, DRM_UNLOCKED),
- DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait, DRM_UNLOCKED),
- DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel, DRM_UNLOCKED),
- DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel, DRM_UNLOCKED),
- DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, DRM_UNLOCKED),
- DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, DRM_UNLOCKED),
-#endif
-};
-
-static const struct file_operations tegra_drm_fops = {
- .owner = THIS_MODULE,
- .open = drm_open,
- .release = drm_release,
- .unlocked_ioctl = drm_ioctl,
- .mmap = tegra_drm_mmap,
- .poll = drm_poll,
- .read = drm_read,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = drm_compat_ioctl,
-#endif
- .llseek = noop_llseek,
-};
-
-static struct drm_crtc *tegra_crtc_from_pipe(struct drm_device *drm, int pipe)
-{
- struct drm_crtc *crtc;
-
- list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) {
- struct tegra_dc *dc = to_tegra_dc(crtc);
-
- if (dc->pipe == pipe)
- return crtc;
- }
-
- return NULL;
-}
-
-static u32 tegra_drm_get_vblank_counter(struct drm_device *dev, int crtc)
-{
- /* TODO: implement real hardware counter using syncpoints */
- return drm_vblank_count(dev, crtc);
-}
-
-static int tegra_drm_enable_vblank(struct drm_device *drm, int pipe)
-{
- struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
- struct tegra_dc *dc = to_tegra_dc(crtc);
-
- if (!crtc)
- return -ENODEV;
-
- tegra_dc_enable_vblank(dc);
-
- return 0;
-}
-
-static void tegra_drm_disable_vblank(struct drm_device *drm, int pipe)
-{
- struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
- struct tegra_dc *dc = to_tegra_dc(crtc);
-
- if (crtc)
- tegra_dc_disable_vblank(dc);
-}
-
-static void tegra_drm_preclose(struct drm_device *drm, struct drm_file *file)
-{
- struct host1x_drm_file *fpriv = file->driver_priv;
- struct host1x_drm_context *context, *tmp;
- struct drm_crtc *crtc;
-
- list_for_each_entry(crtc, &drm->mode_config.crtc_list, head)
- tegra_dc_cancel_page_flip(crtc, file);
-
- list_for_each_entry_safe(context, tmp, &fpriv->contexts, list)
- host1x_drm_context_free(context);
-
- kfree(fpriv);
-}
-
-#ifdef CONFIG_DEBUG_FS
-static int tegra_debugfs_framebuffers(struct seq_file *s, void *data)
-{
- struct drm_info_node *node = (struct drm_info_node *)s->private;
- struct drm_device *drm = node->minor->dev;
- struct drm_framebuffer *fb;
-
- mutex_lock(&drm->mode_config.fb_lock);
-
- list_for_each_entry(fb, &drm->mode_config.fb_list, head) {
- seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n",
- fb->base.id, fb->width, fb->height, fb->depth,
- fb->bits_per_pixel,
- atomic_read(&fb->refcount.refcount));
- }
-
- mutex_unlock(&drm->mode_config.fb_lock);
-
- return 0;
-}
-
-static struct drm_info_list tegra_debugfs_list[] = {
- { "framebuffers", tegra_debugfs_framebuffers, 0 },
-};
-
-static int tegra_debugfs_init(struct drm_minor *minor)
-{
- return drm_debugfs_create_files(tegra_debugfs_list,
- ARRAY_SIZE(tegra_debugfs_list),
- minor->debugfs_root, minor);
-}
-
-static void tegra_debugfs_cleanup(struct drm_minor *minor)
-{
- drm_debugfs_remove_files(tegra_debugfs_list,
- ARRAY_SIZE(tegra_debugfs_list), minor);
-}
-#endif
-
-struct drm_driver tegra_drm_driver = {
- .driver_features = DRIVER_MODESET | DRIVER_GEM,
- .load = tegra_drm_load,
- .unload = tegra_drm_unload,
- .open = tegra_drm_open,
- .preclose = tegra_drm_preclose,
- .lastclose = tegra_drm_lastclose,
-
- .get_vblank_counter = tegra_drm_get_vblank_counter,
- .enable_vblank = tegra_drm_enable_vblank,
- .disable_vblank = tegra_drm_disable_vblank,
-
-#if defined(CONFIG_DEBUG_FS)
- .debugfs_init = tegra_debugfs_init,
- .debugfs_cleanup = tegra_debugfs_cleanup,
-#endif
-
- .gem_free_object = tegra_bo_free_object,
- .gem_vm_ops = &tegra_bo_vm_ops,
- .dumb_create = tegra_bo_dumb_create,
- .dumb_map_offset = tegra_bo_dumb_map_offset,
- .dumb_destroy = drm_gem_dumb_destroy,
-
- .ioctls = tegra_drm_ioctls,
- .num_ioctls = ARRAY_SIZE(tegra_drm_ioctls),
- .fops = &tegra_drm_fops,
-
- .name = DRIVER_NAME,
- .desc = DRIVER_DESC,
- .date = DRIVER_DATE,
- .major = DRIVER_MAJOR,
- .minor = DRIVER_MINOR,
- .patchlevel = DRIVER_PATCHLEVEL,
-};
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