freebsd-dev/sys/dev/drm2/drm_stub.c
Adrian Chadd 280bcab3d0 drm2: a few minor fixes after r280183
* Remove obsolete drm_agp_*_memory() prototypes.
* Fix comment in drm_fops.c (outisde -> outside).
* Fix some formatting issues in drm_stub.c (spaces -> tabs).
* Add missing case statement (gen == 3) in intel_gpu_reset().
* Restore pci_enable_busmaster() call in the init path (fixes gpu hang on i945GM).
* Replace M_WAITOK with M_NOWAIT when the return value of malloc is checked (may be incorrect).

Submitted by:	<s3erios@gmail.com>
Reviewed by:	dumbbell
Approved by:	dumbbell
Differential Revision:	https://reviews.freebsd.org/D3413
2015-10-04 07:45:36 +00:00

502 lines
12 KiB
C

/**
* \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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <dev/drm2/drmP.h>
#include <dev/drm2/drm_core.h>
#ifdef DRM_DEBUG_DEFAULT_ON
unsigned int drm_debug = (DRM_DEBUGBITS_DEBUG | DRM_DEBUGBITS_KMS |
DRM_DEBUGBITS_FAILED_IOCTL);
#else
unsigned int drm_debug = 0; /* 1 to enable debug output */
#endif
EXPORT_SYMBOL(drm_debug);
unsigned int drm_notyet = 0;
unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */
EXPORT_SYMBOL(drm_vblank_offdelay);
unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */
EXPORT_SYMBOL(drm_timestamp_precision);
/*
* Default to use monotonic timestamps for wait-for-vblank and page-flip
* complete events.
*/
unsigned int drm_timestamp_monotonic = 1;
MODULE_AUTHOR(CORE_AUTHOR);
MODULE_DESCRIPTION(CORE_DESC);
MODULE_LICENSE("GPL and additional rights");
MODULE_PARM_DESC(debug, "Enable debug output");
MODULE_PARM_DESC(vblankoffdelay, "Delay until vblank irq auto-disable [msecs]");
MODULE_PARM_DESC(timestamp_precision_usec, "Max. error on timestamps [usecs]");
MODULE_PARM_DESC(timestamp_monotonic, "Use monotonic timestamps");
module_param_named(debug, drm_debug, int, 0600);
module_param_named(vblankoffdelay, drm_vblank_offdelay, int, 0600);
module_param_named(timestamp_precision_usec, drm_timestamp_precision, int, 0600);
module_param_named(timestamp_monotonic, drm_timestamp_monotonic, int, 0600);
static struct cdevsw drm_cdevsw = {
.d_version = D_VERSION,
.d_open = drm_open,
.d_read = drm_read,
.d_ioctl = drm_ioctl,
.d_poll = drm_poll,
.d_mmap_single = drm_mmap_single,
.d_name = "drm",
.d_flags = D_TRACKCLOSE
};
static int drm_minor_get_id(struct drm_device *dev, int type)
{
int new_id;
new_id = device_get_unit(dev->dev);
if (new_id >= 64)
return -EINVAL;
if (type == DRM_MINOR_CONTROL) {
new_id += 64;
} else if (type == DRM_MINOR_RENDER) {
new_id += 128;
}
return new_id;
}
struct drm_master *drm_master_create(struct drm_minor *minor)
{
struct drm_master *master;
master = malloc(sizeof(*master), DRM_MEM_KMS, M_NOWAIT | M_ZERO);
if (!master)
return NULL;
refcount_init(&master->refcount, 1);
mtx_init(&master->lock.spinlock, "drm_master__lock__spinlock",
NULL, MTX_DEF);
DRM_INIT_WAITQUEUE(&master->lock.lock_queue);
drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER);
INIT_LIST_HEAD(&master->magicfree);
master->minor = minor;
list_add_tail(&master->head, &minor->master_list);
return master;
}
struct drm_master *drm_master_get(struct drm_master *master)
{
refcount_acquire(&master->refcount);
return master;
}
EXPORT_SYMBOL(drm_master_get);
static void drm_master_destroy(struct drm_master *master)
{
struct drm_magic_entry *pt, *next;
struct drm_device *dev = master->minor->dev;
struct drm_map_list *r_list, *list_temp;
list_del(&master->head);
if (dev->driver->master_destroy)
dev->driver->master_destroy(dev, master);
list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
if (r_list->master == master) {
drm_rmmap_locked(dev, r_list->map);
r_list = NULL;
}
}
if (master->unique) {
free(master->unique, DRM_MEM_DRIVER);
master->unique = NULL;
master->unique_len = 0;
}
list_for_each_entry_safe(pt, next, &master->magicfree, head) {
list_del(&pt->head);
drm_ht_remove_item(&master->magiclist, &pt->hash_item);
free(pt, DRM_MEM_MAGIC);
}
drm_ht_remove(&master->magiclist);
free(master, DRM_MEM_KMS);
}
void drm_master_put(struct drm_master **master)
{
if (refcount_release(&(*master)->refcount))
drm_master_destroy(*master);
*master = NULL;
}
EXPORT_SYMBOL(drm_master_put);
int drm_setmaster_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
int ret;
if (file_priv->is_master)
return 0;
if (file_priv->minor->master && file_priv->minor->master != file_priv->master)
return -EINVAL;
if (!file_priv->master)
return -EINVAL;
if (file_priv->minor->master)
return -EINVAL;
DRM_LOCK(dev);
file_priv->minor->master = drm_master_get(file_priv->master);
file_priv->is_master = 1;
if (dev->driver->master_set) {
ret = dev->driver->master_set(dev, file_priv, false);
if (unlikely(ret != 0)) {
file_priv->is_master = 0;
drm_master_put(&file_priv->minor->master);
}
}
DRM_UNLOCK(dev);
return 0;
}
int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
if (!file_priv->is_master)
return -EINVAL;
if (!file_priv->minor->master)
return -EINVAL;
DRM_LOCK(dev);
if (dev->driver->master_drop)
dev->driver->master_drop(dev, file_priv, false);
drm_master_put(&file_priv->minor->master);
file_priv->is_master = 0;
DRM_UNLOCK(dev);
return 0;
}
int drm_fill_in_dev(struct drm_device *dev,
struct drm_driver *driver)
{
int retcode, i;
INIT_LIST_HEAD(&dev->filelist);
INIT_LIST_HEAD(&dev->ctxlist);
INIT_LIST_HEAD(&dev->maplist);
INIT_LIST_HEAD(&dev->vblank_event_list);
mtx_init(&dev->irq_lock, "drmirq", NULL, MTX_DEF);
mtx_init(&dev->count_lock, "drmcount", NULL, MTX_DEF);
mtx_init(&dev->event_lock, "drmev", NULL, MTX_DEF);
sx_init(&dev->dev_struct_lock, "drmslk");
mtx_init(&dev->ctxlist_mutex, "drmctxlist", NULL, MTX_DEF);
mtx_init(&dev->pcir_lock, "drmpcir", NULL, MTX_DEF);
if (drm_ht_create(&dev->map_hash, 12)) {
return -ENOMEM;
}
/* 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;
/*
* FIXME Linux<->FreeBSD: this is done in drm_setup() on Linux.
*/
for (i = 0; i < ARRAY_SIZE(dev->counts); i++)
atomic_set(&dev->counts[i], 0);
dev->driver = driver;
retcode = drm_pci_agp_init(dev);
if (retcode)
goto error_out_unreg;
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;
}
}
retcode = drm_sysctl_init(dev);
if (retcode != 0) {
DRM_ERROR("Failed to create hw.dri sysctl entry: %d\n",
retcode);
}
return 0;
error_out_unreg:
drm_cancel_fill_in_dev(dev);
return retcode;
}
EXPORT_SYMBOL(drm_fill_in_dev);
void drm_cancel_fill_in_dev(struct drm_device *dev)
{
struct drm_driver *driver;
driver = dev->driver;
drm_sysctl_cleanup(dev);
if (driver->driver_features & DRIVER_GEM)
drm_gem_destroy(dev);
drm_ctxbitmap_cleanup(dev);
if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
dev->agp && dev->agp->agp_mtrr >= 0) {
int retval;
retval = drm_mtrr_del(dev->agp->agp_mtrr,
dev->agp->agp_info.ai_aperture_base,
dev->agp->agp_info.ai_aperture_size,
DRM_MTRR_WC);
DRM_DEBUG("mtrr_del=%d\n", retval);
}
free(dev->agp, DRM_MEM_AGPLISTS);
dev->agp = NULL;
drm_ht_remove(&dev->map_hash);
mtx_destroy(&dev->irq_lock);
mtx_destroy(&dev->count_lock);
mtx_destroy(&dev->event_lock);
sx_destroy(&dev->dev_struct_lock);
mtx_destroy(&dev->ctxlist_mutex);
mtx_destroy(&dev->pcir_lock);
}
/**
* 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
*/
int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type)
{
struct drm_minor *new_minor;
int ret;
int minor_id;
const char *minor_devname;
DRM_DEBUG("\n");
minor_id = drm_minor_get_id(dev, type);
if (minor_id < 0)
return minor_id;
new_minor = malloc(sizeof(struct drm_minor), DRM_MEM_MINOR,
M_NOWAIT | M_ZERO);
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);
new_minor->buf_sigio = NULL;
switch (type) {
case DRM_MINOR_CONTROL:
minor_devname = "dri/controlD%d";
break;
case DRM_MINOR_RENDER:
minor_devname = "dri/renderD%d";
break;
default:
minor_devname = "dri/card%d";
break;
}
ret = make_dev_p(MAKEDEV_WAITOK | MAKEDEV_CHECKNAME, &new_minor->device,
&drm_cdevsw, 0, DRM_DEV_UID, DRM_DEV_GID,
DRM_DEV_MODE, minor_devname, minor_id);
if (ret) {
DRM_ERROR("Failed to create cdev: %d\n", ret);
goto err_mem;
}
new_minor->device->si_drv1 = new_minor;
*minor = new_minor;
DRM_DEBUG("new minor assigned %d\n", minor_id);
return 0;
err_mem:
free(new_minor, DRM_MEM_MINOR);
err_idr:
*minor = NULL;
return ret;
}
EXPORT_SYMBOL(drm_get_minor);
/**
* 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);
funsetown(&minor->buf_sigio);
destroy_dev(minor->device);
free(minor, DRM_MEM_MINOR);
*minor_p = NULL;
return 0;
}
EXPORT_SYMBOL(drm_put_minor);
/**
* Called via drm_exit() at module unload time or when pci device is
* unplugged.
*
* Cleans up all DRM device, calling drm_lastclose().
*
*/
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;
drm_lastclose(dev);
if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
dev->agp && dev->agp->agp_mtrr >= 0) {
int retval;
retval = drm_mtrr_del(dev->agp->agp_mtrr,
dev->agp->agp_info.ai_aperture_base,
dev->agp->agp_info.ai_aperture_size,
DRM_MTRR_WC);
DRM_DEBUG("mtrr_del=%d\n", retval);
}
if (drm_core_check_feature(dev, DRIVER_MODESET))
drm_mode_group_free(&dev->primary->mode_group);
if (dev->driver->unload)
dev->driver->unload(dev);
drm_sysctl_cleanup(dev);
if (drm_core_has_AGP(dev) && dev->agp) {
free(dev->agp, DRM_MEM_AGPLISTS);
dev->agp = NULL;
}
drm_vblank_cleanup(dev);
list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head)
drm_rmmap(dev, r_list->map);
drm_ht_remove(&dev->map_hash);
drm_ctxbitmap_cleanup(dev);
if (drm_core_check_feature(dev, DRIVER_MODESET))
drm_put_minor(&dev->control);
if (driver->driver_features & DRIVER_GEM)
drm_gem_destroy(dev);
drm_put_minor(&dev->primary);
mtx_destroy(&dev->irq_lock);
mtx_destroy(&dev->count_lock);
mtx_destroy(&dev->event_lock);
sx_destroy(&dev->dev_struct_lock);
mtx_destroy(&dev->ctxlist_mutex);
mtx_destroy(&dev->pcir_lock);
#ifdef FREEBSD_NOTYET
list_del(&dev->driver_item);
#endif /* FREEBSD_NOTYET */
}
EXPORT_SYMBOL(drm_put_dev);