/*
* Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
*/
/*
* Copyright (c) 2012, 2013 Intel Corporation. All rights reserved.
*/
/**
* \file drm_stub.h
* Stub support
*
* \author Rickard E. (Rik) Faith <faith@valinux.com>
*/
/*
* Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
*
* Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "drmP.h"
#include "drm_core.h"
#include "drm_linux_list.h"
unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */
unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */
struct idr drm_minors_idr;
static int drm_minor_get_id(struct drm_device *dev, int type)
{
int new_id;
int ret;
int base, limit;
switch (type) {
case DRM_MINOR_LEGACY:
base = DRM_MINOR_ID_BASE_LEGACY;
limit = DRM_MINOR_ID_LIMIT_LEGACY;
break;
case DRM_MINOR_CONTROL:
base = DRM_MINOR_ID_BASE_CONTROL;
limit = DRM_MINOR_ID_LIMIT_CONTROL;
break;
case DRM_MINOR_RENDER:
base = DRM_MINOR_ID_BASE_RENDER;
limit = DRM_MINOR_ID_LIMIT_RENDER;
break;
case DRM_MINOR_VGATEXT:
base = DRM_MINOR_ID_BASE_VGATEXT;
limit = DRM_MINOR_ID_LIMIT_VGATEXT;
break;
case DRM_MINOR_AGPMASTER:
base = DRM_MINOR_ID_BASE_AGPMASTER;
limit = DRM_MINOR_ID_LIMIT_AGPMASTER;
break;
default:
return -EINVAL;
}
mutex_lock(&dev->struct_mutex);
ret = idr_get_new_above(&drm_minors_idr, NULL,
base, &new_id);
mutex_unlock(&dev->struct_mutex);
if (ret) {
return ret;
}
if (new_id > limit) {
(void) idr_remove(&drm_minors_idr, new_id);
return -EINVAL;
}
return new_id;
}
struct drm_master *drm_master_create(struct drm_minor *minor)
{
struct drm_master *master;
int i;
master = kzalloc(sizeof(*master), GFP_KERNEL);
if (!master)
return NULL;
kref_init(&master->refcount);
mutex_init(&master->lock.lock_mutex, NULL, MUTEX_DRIVER, (void *)minor->dev->pdev->intr_block);
cv_init(&master->lock.lock_cv, NULL, CV_DRIVER, NULL);
for (i = 0; i < DRM_HASH_SIZE; i++) {
master->magiclist[i].head = NULL;
master->magiclist[i].tail = NULL;
}
master->minor = minor;
list_add_tail(&master->head, &minor->master_list, (caddr_t)master);
return master;
}
struct drm_master *drm_master_get(struct drm_master *master)
{
kref_get(&master->refcount);
return master;
}
void drm_master_destroy(struct kref *kref)
{
struct drm_master *master = container_of(kref, struct drm_master, refcount);
struct drm_magic_entry *pt, *next;
struct drm_device *dev = master->minor->dev;
struct drm_map_list *r_list, *list_temp;
int i;
list_del(&master->head);
if (dev->driver->master_destroy)
dev->driver->master_destroy(dev, master);
list_for_each_entry_safe(r_list, list_temp, struct drm_map_list, &dev->maplist, head) {
if (r_list->master == master) {
(void) drm_rmmap_locked(dev, r_list->map);
r_list = NULL;
}
}
if (master->unique) {
kfree(master->unique, master->unique_size);
master->unique = NULL;
master->unique_len = 0;
}
for (i = 0; i < DRM_HASH_SIZE; i++) {
for (pt = master->magiclist[i].head; pt; pt = next) {
next = pt->next;
drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
}
master->magiclist[i].head = master->magiclist[i].tail = NULL;
}
cv_destroy(&master->lock.lock_cv);
mutex_destroy(&master->lock.lock_mutex);
kfree(master, sizeof (struct drm_master));
}
void drm_master_put(struct drm_master **master)
{
kref_put(&(*master)->refcount, drm_master_destroy);
*master = NULL;
}
/* LINTED */
int drm_setmaster_ioctl(DRM_IOCTL_ARGS)
{
int ret = 0;
if (dev->driver->entervt)
dev->driver->entervt(dev);
if (file->is_master)
return 0;
if (file->minor->master && file->minor->master != file->master)
return -EINVAL;
if (!file->master)
return -EINVAL;
if (!file->minor->master &&
file->minor->master != file->master) {
mutex_lock(&dev->struct_mutex);
file->minor->master = drm_master_get(file->master);
file->is_master = 1;
if (dev->driver->master_set) {
ret = dev->driver->master_set(dev, file, false);
if (unlikely(ret != 0)) {
file->is_master = 0;
drm_master_put(&file->minor->master);
}
}
mutex_unlock(&dev->struct_mutex);
}
return 0;
}
/* LINTED */
int drm_dropmaster_ioctl(DRM_IOCTL_ARGS)
{
if (!file->is_master)
return -EINVAL;
if (!file->minor->master)
return -EINVAL;
if (dev->driver->leavevt)
dev->driver->leavevt(dev);
mutex_lock(&dev->struct_mutex);
if (dev->driver->master_drop)
dev->driver->master_drop(dev, file, false);
drm_master_put(&file->minor->master);
file->is_master = 0;
mutex_unlock(&dev->struct_mutex);
return 0;
}
static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
struct drm_driver *driver)
{
int retcode;
INIT_LIST_HEAD(&dev->filelist);
INIT_LIST_HEAD(&dev->ctxlist);
INIT_LIST_HEAD(&dev->maplist);
INIT_LIST_HEAD(&dev->vblank_event_list);
INIT_LIST_HEAD(&dev->gem_objects_list);
mutex_init(&dev->count_lock, NULL, MUTEX_DRIVER, (void *)pdev->intr_block);
mutex_init(&dev->event_lock, NULL, MUTEX_DRIVER, (void *)pdev->intr_block);
mutex_init(&dev->struct_mutex, NULL, MUTEX_DRIVER, NULL); //adaptive locks
mutex_init(&dev->ctxlist_mutex, NULL, MUTEX_DRIVER, NULL);
mutex_init(&dev->irq_lock, NULL, MUTEX_DRIVER, (void *)pdev->intr_block);
mutex_init(&dev->track_lock, NULL, MUTEX_DRIVER, (void *)pdev->intr_block);
mutex_init(&dev->page_fault_lock, NULL, MUTEX_DRIVER, NULL);
dev->pdev = pdev;
dev->pci_device = pdev->device;
dev->pci_vendor = pdev->vendor;
idr_init(&dev->map_idr);
/* the DRM has 6 basic counters */
dev->counters = 6;
dev->types[0] = _DRM_STAT_LOCK;
dev->types[1] = _DRM_STAT_OPENS;
dev->types[2] = _DRM_STAT_CLOSES;
dev->types[3] = _DRM_STAT_IOCTLS;
dev->types[4] = _DRM_STAT_LOCKS;
dev->types[5] = _DRM_STAT_UNLOCKS;
dev->driver = driver;
retcode = drm_ctxbitmap_init(dev);
if (retcode) {
DRM_ERROR("Cannot allocate memory for context bitmap.\n");
goto error_out_unreg;
}
if (driver->driver_features & DRIVER_GEM) {
retcode = drm_gem_init(dev);
if (retcode) {
DRM_ERROR("Cannot initialize graphics execution "
"manager (GEM)\n");
goto error_out_unreg;
}
}
dev->drm_wq = create_workqueue(dev->devinfo, "drm");
if (dev->drm_wq == NULL) {
DRM_ERROR("Failed to create drm workqueue.\n");
goto error_out_unreg;
}
return 0;
error_out_unreg:
(void)drm_lastclose(dev);
return retcode;
}
/**
* Get a secondary minor number.
*
* \param dev device data structure
* \param sec-minor structure to hold the assigned minor
* \return negative number on failure.
*
* Search an empty entry and initialize it to the given parameters, and
* create the proc init entry via proc_init(). This routines assigns
* minor numbers to secondary heads of multi-headed cards
*/
static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type)
{
struct drm_minor *new_minor;
int ret;
int minor_id;
DRM_DEBUG("\n");
minor_id = drm_minor_get_id(dev, type);
if (minor_id < 0)
return minor_id;
new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
if (!new_minor) {
ret = -ENOMEM;
goto err_idr;
}
new_minor->type = type;
new_minor->dev = dev;
new_minor->index = minor_id;
INIT_LIST_HEAD(&new_minor->master_list);
(void) idr_replace(&drm_minors_idr, new_minor, minor_id);
if (type == DRM_MINOR_LEGACY)
(void) sprintf(new_minor->name, "drm%d", new_minor->index);
else if (type == DRM_MINOR_CONTROL)
(void) sprintf(new_minor->name, "controlD%d", new_minor->index);
else if (type == DRM_MINOR_RENDER)
(void) sprintf(new_minor->name, "renderD%d", new_minor->index);
else if (type == DRM_MINOR_VGATEXT)
(void) sprintf(new_minor->name, "gfx%d", new_minor->index - DRM_MINOR_ID_BASE_VGATEXT);
else if (type == DRM_MINOR_AGPMASTER)
(void) sprintf(new_minor->name, "agpmaster%d", new_minor->index - DRM_MINOR_ID_BASE_AGPMASTER);
idr_init(&new_minor->clone_idr);
ret = drm_sysfs_device_add(new_minor);
if (ret)
goto err_g2;
*minor = new_minor;
DRM_DEBUG("new minor assigned %d\n", minor_id);
return 0;
err_g2:
err_mem:
kfree(new_minor, sizeof (*new_minor));
err_idr:
(void) idr_remove(&drm_minors_idr, minor_id);
*minor = NULL;
return ret;
}
/**
* Register.
*
* \return zero on success or a negative number on failure.
*
* Attempt to gets inter module "drm" information. If we are first
* then register the character device and inter module information.
* Try and register, if we fail to register, backout previous work.
*/
int drm_get_dev(struct drm_device *dev, struct pci_dev *pdev,
struct drm_driver *driver, unsigned long driver_data)
{
int ret;
DRM_DEBUG("\n");
if ((ret = drm_fill_in_dev(dev, pdev, driver))) {
DRM_ERROR("DRM: Fill_in_dev failed");
goto err_g1;
}
if ((ret = drm_get_minor(dev, &dev->vgatext, DRM_MINOR_VGATEXT))) {
goto err_g2;
}
if (dev->driver->agp_support_detect)
dev->driver->agp_support_detect(dev, driver_data);
if (drm_core_has_AGP(dev)) {
if ((ret = drm_get_minor(dev, &dev->agpmaster, DRM_MINOR_AGPMASTER)))
goto err_g1;
}
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
if (ret)
goto err_g3;
}
if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
goto err_g4;
if (dev->driver->load) {
ret = dev->driver->load(dev, driver_data);
if (ret)
goto err_g5;
}
if (drm_init_kstats(dev)) {
DRM_ERROR("init kstats error");
ret = EFAULT;
goto err_g5;
}
cmn_err(CE_CONT, "!Initialized %s v%d.%d.%d Modified date %s",
driver->name, driver->major, driver->minor, driver->patchlevel,
driver->date);
return 0;
err_g5:
(void) drm_put_minor(&dev->primary);
err_g4:
if (drm_core_check_feature(dev, DRIVER_MODESET))
(void) drm_put_minor(&dev->control);
err_g3:
(void) drm_put_minor(&dev->vgatext);
err_g2:
if (drm_core_has_AGP(dev))
(void) drm_put_minor(&dev->agpmaster);
err_g1:
return ret;
}
/**
* Put a secondary minor number.
*
* \param sec_minor - structure to be released
* \return always zero
*
* Cleans up the proc resources. Not legal for this to be the
* last minor released.
*
*/
int drm_put_minor(struct drm_minor **minor_p)
{
struct drm_minor *minor = *minor_p;
DRM_DEBUG("release secondary minor %d\n", minor->index);
drm_sysfs_device_remove(minor);
(void) idr_remove(&drm_minors_idr, minor->index);
idr_destroy(&minor->clone_idr);
kfree(minor, sizeof (*minor));
*minor_p = NULL;
return 0;
}
/**
* Called via drm_exit() at module unload time or when pci device is
* unplugged.
*
* Cleans up all DRM device, calling drm_lastclose().
*
* \sa drm_init
*/
void drm_put_dev(struct drm_device *dev)
{
struct drm_driver *driver;
struct drm_map_list *r_list, *list_temp;
DRM_DEBUG("\n");
if (!dev) {
DRM_ERROR("cleanup called no dev\n");
return;
}
driver = dev->driver;
(void) drm_lastclose(dev);
(void) destroy_workqueue(dev->drm_wq);
if (dev->driver->unload)
dev->driver->unload(dev);
gfxp_mempool_destroy();
if (drm_core_has_AGP(dev) && dev->agp) {
drm_agp_cleanup(dev);
kfree(dev->agp, sizeof(*dev->agp));
dev->agp = NULL;
}
drm_vblank_cleanup(dev);
list_for_each_entry_safe(r_list, list_temp, struct drm_map_list, &dev->maplist, head)
(void) drm_rmmap(dev, r_list->map);
idr_destroy(&dev->map_idr);
drm_ctxbitmap_cleanup(dev);
(void) drm_put_minor(&dev->vgatext);
if (drm_core_has_AGP(dev))
(void) drm_put_minor(&dev->agpmaster);
if (drm_core_check_feature(dev, DRIVER_MODESET))
(void) drm_put_minor(&dev->control);
if (driver->driver_features & DRIVER_GEM)
drm_gem_destroy(dev);
(void) drm_put_minor(&dev->primary);
mutex_destroy(&dev->irq_lock);
mutex_destroy(&dev->ctxlist_mutex);
mutex_destroy(&dev->struct_mutex);
mutex_destroy(&dev->event_lock);
mutex_destroy(&dev->count_lock);
drm_fini_kstats(dev);
}