- 根目录:
- drivers
- gpu
- drm
- tegra
- drm.c
/*
* 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/host1x.h>
#include <linux/iommu.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include "drm.h"
#include "gem.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 tegra_drm_file {
struct list_head contexts;
};
static void tegra_atomic_schedule(struct tegra_drm *tegra,
struct drm_atomic_state *state)
{
tegra->commit.state = state;
schedule_work(&tegra->commit.work);
}
static void tegra_atomic_complete(struct tegra_drm *tegra,
struct drm_atomic_state *state)
{
struct drm_device *drm = tegra->drm;
/*
* Everything below can be run asynchronously without the need to grab
* any modeset locks at all under one condition: It must be guaranteed
* that the asynchronous work has either been cancelled (if the driver
* supports it, which at least requires that the framebuffers get
* cleaned up with drm_atomic_helper_cleanup_planes()) or completed
* before the new state gets committed on the software side with
* drm_atomic_helper_swap_state().
*
* This scheme allows new atomic state updates to be prepared and
* checked in parallel to the asynchronous completion of the previous
* update. Which is important since compositors need to figure out the
* composition of the next frame right after having submitted the
* current layout.
*/
drm_atomic_helper_commit_modeset_disables(drm, state);
drm_atomic_helper_commit_planes(drm, state, false);
drm_atomic_helper_commit_modeset_enables(drm, state);
drm_atomic_helper_wait_for_vblanks(drm, state);
drm_atomic_helper_cleanup_planes(drm, state);
drm_atomic_state_free(state);
}
static void tegra_atomic_work(struct work_struct *work)
{
struct tegra_drm *tegra = container_of(work, struct tegra_drm,
commit.work);
tegra_atomic_complete(tegra, tegra->commit.state);
}
static int tegra_atomic_commit(struct drm_device *drm,
struct drm_atomic_state *state, bool async)
{
struct tegra_drm *tegra = drm->dev_private;
int err;
err = drm_atomic_helper_prepare_planes(drm, state);
if (err)
return err;
/* serialize outstanding asynchronous commits */
mutex_lock(&tegra->commit.lock);
flush_work(&tegra->commit.work);
/*
* This is the point of no return - everything below never fails except
* when the hw goes bonghits. Which means we can commit the new state on
* the software side now.
*/
drm_atomic_helper_swap_state(drm, state);
if (async)
tegra_atomic_schedule(tegra, state);
else
tegra_atomic_complete(tegra, state);
mutex_unlock(&tegra->commit.lock);
return 0;
}
static const struct drm_mode_config_funcs tegra_drm_mode_funcs = {
.fb_create = tegra_fb_create,
#ifdef CONFIG_DRM_TEGRA_FBDEV
.output_poll_changed = tegra_fb_output_poll_changed,
#endif
.atomic_check = drm_atomic_helper_check,
.atomic_commit = tegra_atomic_commit,
};
static int tegra_drm_load(struct drm_device *drm, unsigned long flags)
{
struct host1x_device *device = to_host1x_device(drm->dev);
struct tegra_drm *tegra;
int err;
tegra = kzalloc(sizeof(*tegra), GFP_KERNEL);
if (!tegra)
return -ENOMEM;
if (iommu_present(&platform_bus_type)) {
struct iommu_domain_geometry *geometry;
u64 start, end;
tegra->domain = iommu_domain_alloc(&platform_bus_type);
if (!tegra->domain) {
err = -ENOMEM;
goto free;
}
geometry = &tegra->domain->geometry;
start = geometry->aperture_start;
end = geometry->aperture_end;
DRM_DEBUG("IOMMU context initialized (aperture: %#llx-%#llx)\n",
start, end);
drm_mm_init(&tegra->mm, start, end - start + 1);
}
mutex_init(&tegra->clients_lock);
INIT_LIST_HEAD(&tegra->clients);
mutex_init(&tegra->commit.lock);
INIT_WORK(&tegra->commit.work, tegra_atomic_work);
drm->dev_private = tegra;
tegra->drm = drm;
drm_mode_config_init(drm);
drm->mode_config.min_width = 0;
drm->mode_config.min_height = 0;
drm->mode_config.max_width = 4096;
drm->mode_config.max_height = 4096;
drm->mode_config.funcs = &tegra_drm_mode_funcs;
err = tegra_drm_fb_prepare(drm);
if (err < 0)
goto config;
drm_kms_helper_poll_init(drm);
err = host1x_device_init(device);
if (err < 0)
goto fbdev;
/*
* 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 = true;
/* syncpoints are used for full 32-bit hardware VBLANK counters */
drm->max_vblank_count = 0xffffffff;
drm->vblank_disable_allowed = true;
err = drm_vblank_init(drm, drm->mode_config.num_crtc);
if (err < 0)
goto device;
drm_mode_config_reset(drm);
err = tegra_drm_fb_init(drm);
if (err < 0)
goto vblank;
return 0;
vblank:
drm_vblank_cleanup(drm);
device:
host1x_device_exit(device);
fbdev:
drm_kms_helper_poll_fini(drm);
tegra_drm_fb_free(drm);
config:
drm_mode_config_cleanup(drm);
if (tegra->domain) {
iommu_domain_free(tegra->domain);
drm_mm_takedown(&tegra->mm);
}
free:
kfree(tegra);
return err;
}
static int tegra_drm_unload(struct drm_device *drm)
{
struct host1x_device *device = to_host1x_device(drm->dev);
struct tegra_drm *tegra = drm->dev_private;
int err;
drm_kms_helper_poll_fini(drm);
tegra_drm_fb_exit(drm);
drm_mode_config_cleanup(drm);
drm_vblank_cleanup(drm);
err = host1x_device_exit(device);
if (err < 0)
return err;
if (tegra->domain) {
iommu_domain_free(tegra->domain);
drm_mm_takedown(&tegra->mm);
}
kfree(tegra);
return 0;
}
static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
{
struct tegra_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 tegra_drm_context_free(struct tegra_drm_context *context)
{
context->client->ops->close_channel(context);
kfree(context);
}
static void tegra_drm_lastclose(struct drm_device *drm)
{
#ifdef CONFIG_DRM_TEGRA_FBDEV
struct tegra_drm *tegra = drm->dev_private;
tegra_fbdev_restore_mode(tegra->fbdev);
#endif
}
static struct host1x_bo *
host1x_bo_lookup(struct drm_device *drm, struct drm_file *file, u32 handle)
{
struct drm_gem_object *gem;
struct tegra_bo *bo;
gem = drm_gem_object_lookup(drm, file, handle);
if (!gem)
return NULL;
mutex_lock(&drm->struct_mutex);
drm_gem_object_unreference(gem);
mutex_unlock(&drm->struct_mutex);
bo = to_tegra_bo(gem);
return &bo->base;
}
static int host1x_reloc_copy_from_user(struct host1x_reloc *dest,
struct drm_tegra_reloc __user *src,
struct drm_device *drm,
struct drm_file *file)
{
u32 cmdbuf, target;
int err;
err = get_user(cmdbuf, &src->cmdbuf.handle);
if (err < 0)
return err;
err = get_user(dest->cmdbuf.offset, &src->cmdbuf.offset);
if (err < 0)
return err;
err = get_user(target, &src->target.handle);
if (err < 0)
return err;
err = get_user(dest->target.offset, &src->target.offset);
if (err < 0)
return err;
err = get_user(dest->shift, &src->shift);
if (err < 0)
return err;
dest->cmdbuf.bo = host1x_bo_lookup(drm, file, cmdbuf);
if (!dest->cmdbuf.bo)
return -ENOENT;
dest->target.bo = host1x_bo_lookup(drm, file, target);
if (!dest->target.bo)
return -ENOENT;
return 0;
}
int tegra_drm_submit(struct tegra_drm_context *context,
struct drm_tegra_submit *args, struct drm_device *drm,
struct drm_file *file)
{
unsigned int num_cmdbufs = args->num_cmdbufs;
unsigned int num_relocs = args->num_relocs;
unsigned int num_waitchks = args->num_waitchks;
struct drm_tegra_cmdbuf __user *cmdbufs =
(void __user *)(uintptr_t)args->cmdbufs;
struct drm_tegra_reloc __user *relocs =
(void __user *)(uintptr_t)args->relocs;
struct drm_tegra_waitchk __user *waitchks =
(void __user *)(uintptr_t)args->waitchks;
struct drm_tegra_syncpt syncpt;
struct host1x_job *job;
int err;
/* We don't yet support other than one syncpt_incr struct per submit */
if (args->num_syncpts != 1)
return -EINVAL;
job = host1x_job_alloc(context->channel, args->num_cmdbufs,
args->num_relocs, args->num_waitchks);
if (!job)
return -ENOMEM;
job->num_relocs = args->num_relocs;
job->num_waitchk = args->num_waitchks;
job->client = (u32)args->context;
job->class = context->client->base.class;
job->serialize = true;
while (num_cmdbufs) {
struct drm_tegra_cmdbuf cmdbuf;
struct host1x_bo *bo;
if (copy_from_user(&cmdbuf, cmdbufs, sizeof(cmdbuf))) {
err = -EFAULT;
goto fail;
}
bo = host1x_bo_lookup(drm, file, cmdbuf.handle);
if (!bo) {
err = -ENOENT;
goto fail;
}
host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset);
num_cmdbufs--;
cmdbufs++;
}
/* copy and resolve relocations from submit */
while (num_relocs--) {
err = host1x_reloc_copy_from_user(&job->relocarray[num_relocs],
&relocs[num_relocs], drm,
file);
if (err < 0)
goto fail;
}
if (copy_from_user(job->waitchk, waitchks,
sizeof(*waitchks) * num_waitchks)) {
err = -EFAULT;
goto fail;
}
if (copy_from_user(&syncpt, (void __user *)(uintptr_t)args->syncpts,
sizeof(syncpt))) {
err = -EFAULT;
goto fail;
}
job->is_addr_reg = context->client->ops->is_addr_reg;
job->syncpt_incrs = syncpt.incrs;
job->syncpt_id = syncpt.id;
job->timeout = 10000;
if (args->timeout && args->timeout < 10000)
job->timeout = args->timeout;
err = host1x_job_pin(job, context->client->base.dev);
if (err)
goto fail;
err = host1x_job_submit(job);
if (err)
goto fail_submit;
args->fence = job->syncpt_end;
host1x_job_put(job);
return 0;
fail_submit:
host1x_job_unpin(job);
fail:
host1x_job_put(job);
return err;
}
#ifdef CONFIG_DRM_TEGRA_STAGING
static struct tegra_drm_context *tegra_drm_get_context(__u64 context)
{
return (struct tegra_drm_context *)(uintptr_t)context;
}
static bool tegra_drm_file_owns_context(struct tegra_drm_file *file,
struct tegra_drm_context *context)
{
struct tegra_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->flags,
&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 host1x *host = dev_get_drvdata(drm->dev->parent);
struct drm_tegra_syncpt_read *args = data;
struct host1x_syncpt *sp;
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 host1x *host1x = dev_get_drvdata(drm->dev->parent);
struct drm_tegra_syncpt_incr *args = data;
struct host1x_syncpt *sp;
sp = host1x_syncpt_get(host1x, 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 host1x *host1x = dev_get_drvdata(drm->dev->parent);
struct drm_tegra_syncpt_wait *args = data;
struct host1x_syncpt *sp;
sp = host1x_syncpt_get(host1x, 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 tegra_drm_file *fpriv = file->driver_priv;
struct tegra_drm *tegra = drm->dev_private;
struct drm_tegra_open_channel *args = data;
struct tegra_drm_context *context;
struct tegra_drm_client *client;
int err = -ENODEV;
context = kzalloc(sizeof(*context), GFP_KERNEL);
if (!context)
return -ENOMEM;
list_for_each_entry(client, &tegra->clients, list)
if (client->base.class == args->client) {
err = client->ops->open_channel(client, context);
if (err)
break;
list_add(&context->list, &fpriv->contexts);
args->context = (uintptr_t)context;
context->client = client;
return 0;
}
kfree(context);
return err;
}
static int tegra_close_channel(struct drm_device *drm, void *data,
struct drm_file *file)
{
struct tegra_drm_file *fpriv = file->driver_priv;
struct drm_tegra_close_channel *args = data;
struct tegra_drm_context *context;
context = tegra_drm_get_context(args->context);
if (!tegra_drm_file_owns_context(fpriv, context))
return -EINVAL;
list_del(&context->list);
tegra_drm_context_free(context);
return 0;
}
static int tegra_get_syncpt(struct drm_device *drm, void *data,
struct drm_file *file)
{
struct tegra_drm_file *fpriv = file->driver_priv;
struct drm_tegra_get_syncpt *args = data;
struct tegra_drm_context *context;
struct host1x_syncpt *syncpt;
context = tegra_drm_get_context(args->context);
if (!tegra_drm_file_owns_context(fpriv, context))
return -ENODEV;
if (args->index >= context->client->base.num_syncpts)
return -EINVAL;
syncpt = context->client->base.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 tegra_drm_file *fpriv = file->driver_priv;
struct drm_tegra_submit *args = data;
struct tegra_drm_context *context;
context = tegra_drm_get_context(args->context);
if (!tegra_drm_file_owns_context(fpriv, context))
return -ENODEV;
return context->client->ops->submit(context, args, drm, file);
}
static int tegra_get_syncpt_base(struct drm_device *drm, void *data,
struct drm_file *file)
{
struct tegra_drm_file *fpriv = file->driver_priv;
struct drm_tegra_get_syncpt_base *args = data;
struct tegra_drm_context *context;
struct host1x_syncpt_base *base;
struct host1x_syncpt *syncpt;
context = tegra_drm_get_context(args->context);
if (!tegra_drm_file_owns_context(fpriv, context))
return -ENODEV;
if (args->syncpt >= context->client->base.num_syncpts)
return -EINVAL;
syncpt = context->client->base.syncpts[args->syncpt];
base = host1x_syncpt_get_base(syncpt);
if (!base)
return -ENXIO;
args->id = host1x_syncpt_base_id(base);
return 0;
}
static int tegra_gem_set_tiling(struct drm_device *drm, void *data,
struct drm_file *file)
{
struct drm_tegra_gem_set_tiling *args = data;
enum tegra_bo_tiling_mode mode;
struct drm_gem_object *gem;
unsigned long value = 0;
struct tegra_bo *bo;
switch (args->mode) {
case DRM_TEGRA_GEM_TILING_MODE_PITCH:
mode = TEGRA_BO_TILING_MODE_PITCH;
if (args->value != 0)
return -EINVAL;
break;
case DRM_TEGRA_GEM_TILING_MODE_TILED:
mode = TEGRA_BO_TILING_MODE_TILED;
if (args->value != 0)
return -EINVAL;
break;
case DRM_TEGRA_GEM_TILING_MODE_BLOCK:
mode = TEGRA_BO_TILING_MODE_BLOCK;
if (args->value > 5)
return -EINVAL;
value = args->value;
break;
default:
return -EINVAL;
}
gem = drm_gem_object_lookup(drm, file, args->handle);
if (!gem)
return -ENOENT;
bo = to_tegra_bo(gem);
bo->tiling.mode = mode;
bo->tiling.value = value;
drm_gem_object_unreference(gem);
return 0;
}
static int tegra_gem_get_tiling(struct drm_device *drm, void *data,
struct drm_file *file)
{
struct drm_tegra_gem_get_tiling *args = data;
struct drm_gem_object *gem;
struct tegra_bo *bo;
int err = 0;
gem = drm_gem_object_lookup(drm, file, args->handle);
if (!gem)
return -ENOENT;
bo = to_tegra_bo(gem);
switch (bo->tiling.mode) {
case TEGRA_BO_TILING_MODE_PITCH:
args->mode = DRM_TEGRA_GEM_TILING_MODE_PITCH;
args->value = 0;
break;
case TEGRA_BO_TILING_MODE_TILED:
args->mode = DRM_TEGRA_GEM_TILING_MODE_TILED;
args->value = 0;
break;
case TEGRA_BO_TILING_MODE_BLOCK:
args->mode = DRM_TEGRA_GEM_TILING_MODE_BLOCK;
args->value = bo->tiling.value;
break;
default:
err = -EINVAL;
break;
}
drm_gem_object_unreference(gem);
return err;
}
static int tegra_gem_set_flags(struct drm_device *drm, void *data,
struct drm_file *file)
{
struct drm_tegra_gem_set_flags *args = data;
struct drm_gem_object *gem;
struct tegra_bo *bo;
if (args->flags & ~DRM_TEGRA_GEM_FLAGS)
return -EINVAL;
gem = drm_gem_object_lookup(drm, file, args->handle);
if (!gem)
return -ENOENT;
bo = to_tegra_bo(gem);
bo->flags = 0;
if (args->flags & DRM_TEGRA_GEM_BOTTOM_UP)
bo->flags |= TEGRA_BO_BOTTOM_UP;
drm_gem_object_unreference(gem);
return 0;
}
static int tegra_gem_get_flags(struct drm_device *drm, void *data,
struct drm_file *file)
{
struct drm_tegra_gem_get_flags *args = data;
struct drm_gem_object *gem;
struct tegra_bo *bo;
gem = drm_gem_object_lookup(drm, file, args->handle);
if (!gem)
return -ENOENT;
bo = to_tegra_bo(gem);
args->flags = 0;
if (bo->flags & TEGRA_BO_BOTTOM_UP)
args->flags |= DRM_TEGRA_GEM_BOTTOM_UP;
drm_gem_object_unreference(gem);
return 0;
}
#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, 0),
DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, 0),
DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read, 0),
DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr, 0),
DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait, 0),
DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel, 0),
DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel, 0),
DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt, 0),
DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit, 0),
DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base, 0),
DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_TILING, tegra_gem_set_tiling, 0),
DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_TILING, tegra_gem_get_tiling, 0),
DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_FLAGS, tegra_gem_set_flags, 0),
DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_FLAGS, tegra_gem_get_flags, 0),
#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,
unsigned int pipe)
{
struct drm_crtc *crtc;
list_for_each_entry(crtc, &drm->mode_config.crtc_list, head) {
if (pipe == drm_crtc_index(crtc))
return crtc;
}
return NULL;
}
static u32 tegra_drm_get_vblank_counter(struct drm_device *drm,
unsigned int pipe)
{
struct drm_crtc *crtc = tegra_crtc_from_pipe(drm, pipe);
struct tegra_dc *dc = to_tegra_dc(crtc);
if (!crtc)
return 0;
return tegra_dc_get_vblank_counter(dc);
}
static int tegra_drm_enable_vblank(struct drm_device *drm, unsigned 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, unsigned 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 tegra_drm_file *fpriv = file->driver_priv;
struct tegra_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)
tegra_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 int tegra_debugfs_iova(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 tegra_drm *tegra = drm->dev_private;
return drm_mm_dump_table(s, &tegra->mm);
}
static struct drm_info_list tegra_debugfs_list[] = {
{ "framebuffers", tegra_debugfs_framebuffers, 0 },
{ "iova", tegra_debugfs_iova, 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
static struct drm_driver tegra_drm_driver = {
.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
.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,
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_export = tegra_gem_prime_export,
.gem_prime_import = tegra_gem_prime_import,
.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,
};
int tegra_drm_register_client(struct tegra_drm *tegra,
struct tegra_drm_client *client)
{
mutex_lock(&tegra->clients_lock);
list_add_tail(&client->list, &tegra->clients);
mutex_unlock(&tegra->clients_lock);
return 0;
}
int tegra_drm_unregister_client(struct tegra_drm *tegra,
struct tegra_drm_client *client)
{
mutex_lock(&tegra->clients_lock);
list_del_init(&client->list);
mutex_unlock(&tegra->clients_lock);
return 0;
}
static int host1x_drm_probe(struct host1x_device *dev)
{
struct drm_driver *driver = &tegra_drm_driver;
struct drm_device *drm;
int err;
drm = drm_dev_alloc(driver, &dev->dev);
if (!drm)
return -ENOMEM;
drm_dev_set_unique(drm, dev_name(&dev->dev));
dev_set_drvdata(&dev->dev, drm);
err = drm_dev_register(drm, 0);
if (err < 0)
goto unref;
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", driver->name,
driver->major, driver->minor, driver->patchlevel,
driver->date, drm->primary->index);
return 0;
unref:
drm_dev_unref(drm);
return err;
}
static int host1x_drm_remove(struct host1x_device *dev)
{
struct drm_device *drm = dev_get_drvdata(&dev->dev);
drm_dev_unregister(drm);
drm_dev_unref(drm);
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int host1x_drm_suspend(struct device *dev)
{
struct drm_device *drm = dev_get_drvdata(dev);
drm_kms_helper_poll_disable(drm);
return 0;
}
static int host1x_drm_resume(struct device *dev)
{
struct drm_device *drm = dev_get_drvdata(dev);
drm_kms_helper_poll_enable(drm);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(host1x_drm_pm_ops, host1x_drm_suspend,
host1x_drm_resume);
static const struct of_device_id host1x_drm_subdevs[] = {
{ .compatible = "nvidia,tegra20-dc", },
{ .compatible = "nvidia,tegra20-hdmi", },
{ .compatible = "nvidia,tegra20-gr2d", },
{ .compatible = "nvidia,tegra20-gr3d", },
{ .compatible = "nvidia,tegra30-dc", },
{ .compatible = "nvidia,tegra30-hdmi", },
{ .compatible = "nvidia,tegra30-gr2d", },
{ .compatible = "nvidia,tegra30-gr3d", },
{ .compatible = "nvidia,tegra114-dsi", },
{ .compatible = "nvidia,tegra114-hdmi", },
{ .compatible = "nvidia,tegra114-gr3d", },
{ .compatible = "nvidia,tegra124-dc", },
{ .compatible = "nvidia,tegra124-sor", },
{ .compatible = "nvidia,tegra124-hdmi", },
{ .compatible = "nvidia,tegra124-dsi", },
{ .compatible = "nvidia,tegra132-dsi", },
{ .compatible = "nvidia,tegra210-dc", },
{ .compatible = "nvidia,tegra210-dsi", },
{ .compatible = "nvidia,tegra210-sor", },
{ .compatible = "nvidia,tegra210-sor1", },
{ /* sentinel */ }
};
static struct host1x_driver host1x_drm_driver = {
.driver = {
.name = "drm",
.pm = &host1x_drm_pm_ops,
},
.probe = host1x_drm_probe,
.remove = host1x_drm_remove,
.subdevs = host1x_drm_subdevs,
};
static int __init host1x_drm_init(void)
{
int err;
err = host1x_driver_register(&host1x_drm_driver);
if (err < 0)
return err;
err = platform_driver_register(&tegra_dc_driver);
if (err < 0)
goto unregister_host1x;
err = platform_driver_register(&tegra_dsi_driver);
if (err < 0)
goto unregister_dc;
err = platform_driver_register(&tegra_sor_driver);
if (err < 0)
goto unregister_dsi;
err = platform_driver_register(&tegra_hdmi_driver);
if (err < 0)
goto unregister_sor;
err = platform_driver_register(&tegra_dpaux_driver);
if (err < 0)
goto unregister_hdmi;
err = platform_driver_register(&tegra_gr2d_driver);
if (err < 0)
goto unregister_dpaux;
err = platform_driver_register(&tegra_gr3d_driver);
if (err < 0)
goto unregister_gr2d;
return 0;
unregister_gr2d:
platform_driver_unregister(&tegra_gr2d_driver);
unregister_dpaux:
platform_driver_unregister(&tegra_dpaux_driver);
unregister_hdmi:
platform_driver_unregister(&tegra_hdmi_driver);
unregister_sor:
platform_driver_unregister(&tegra_sor_driver);
unregister_dsi:
platform_driver_unregister(&tegra_dsi_driver);
unregister_dc:
platform_driver_unregister(&tegra_dc_driver);
unregister_host1x:
host1x_driver_unregister(&host1x_drm_driver);
return err;
}
module_init(host1x_drm_init);
static void __exit host1x_drm_exit(void)
{
platform_driver_unregister(&tegra_gr3d_driver);
platform_driver_unregister(&tegra_gr2d_driver);
platform_driver_unregister(&tegra_dpaux_driver);
platform_driver_unregister(&tegra_hdmi_driver);
platform_driver_unregister(&tegra_sor_driver);
platform_driver_unregister(&tegra_dsi_driver);
platform_driver_unregister(&tegra_dc_driver);
host1x_driver_unregister(&host1x_drm_driver);
}
module_exit(host1x_drm_exit);
MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");
MODULE_DESCRIPTION("NVIDIA Tegra DRM driver");
MODULE_LICENSE("GPL v2");