285 lines
7.4 KiB
C
285 lines
7.4 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 <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include "drmP.h"
|
|
#include "drm_core.h"
|
|
|
|
unsigned int drm_cards_limit = 16; /* Enough for one machine */
|
|
unsigned int drm_debug = 0; /* 1 to enable debug output */
|
|
EXPORT_SYMBOL(drm_debug);
|
|
|
|
MODULE_AUTHOR(CORE_AUTHOR);
|
|
MODULE_DESCRIPTION(CORE_DESC);
|
|
MODULE_LICENSE("GPL and additional rights");
|
|
MODULE_PARM_DESC(cards_limit, "Maximum number of graphics cards");
|
|
MODULE_PARM_DESC(debug, "Enable debug output");
|
|
|
|
module_param_named(cards_limit, drm_cards_limit, int, 0444);
|
|
module_param_named(debug, drm_debug, int, 0600);
|
|
|
|
drm_head_t **drm_heads;
|
|
struct class *drm_class;
|
|
struct proc_dir_entry *drm_proc_root;
|
|
|
|
static int drm_fill_in_dev(drm_device_t * dev, struct pci_dev *pdev,
|
|
const struct pci_device_id *ent,
|
|
struct drm_driver *driver)
|
|
{
|
|
int retcode;
|
|
|
|
spin_lock_init(&dev->count_lock);
|
|
init_timer(&dev->timer);
|
|
mutex_init(&dev->struct_mutex);
|
|
mutex_init(&dev->ctxlist_mutex);
|
|
|
|
dev->pdev = pdev;
|
|
|
|
#ifdef __alpha__
|
|
dev->hose = pdev->sysdata;
|
|
dev->pci_domain = dev->hose->bus->number;
|
|
#else
|
|
dev->pci_domain = 0;
|
|
#endif
|
|
dev->pci_bus = pdev->bus->number;
|
|
dev->pci_slot = PCI_SLOT(pdev->devfn);
|
|
dev->pci_func = PCI_FUNC(pdev->devfn);
|
|
dev->irq = pdev->irq;
|
|
|
|
dev->maplist = drm_calloc(1, sizeof(*dev->maplist), DRM_MEM_MAPS);
|
|
if (dev->maplist == NULL)
|
|
return -ENOMEM;
|
|
INIT_LIST_HEAD(&dev->maplist->head);
|
|
|
|
/* 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;
|
|
|
|
if (dev->driver->load)
|
|
if ((retcode = dev->driver->load(dev, ent->driver_data)))
|
|
goto error_out_unreg;
|
|
|
|
if (drm_core_has_AGP(dev)) {
|
|
if (drm_device_is_agp(dev))
|
|
dev->agp = drm_agp_init(dev);
|
|
if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
|
|
&& (dev->agp == NULL)) {
|
|
DRM_ERROR("Cannot initialize the agpgart module.\n");
|
|
retcode = -EINVAL;
|
|
goto error_out_unreg;
|
|
}
|
|
if (drm_core_has_MTRR(dev)) {
|
|
if (dev->agp)
|
|
dev->agp->agp_mtrr =
|
|
mtrr_add(dev->agp->agp_info.aper_base,
|
|
dev->agp->agp_info.aper_size *
|
|
1024 * 1024, MTRR_TYPE_WRCOMB, 1);
|
|
}
|
|
}
|
|
|
|
retcode = drm_ctxbitmap_init(dev);
|
|
if (retcode) {
|
|
DRM_ERROR("Cannot allocate memory for context bitmap.\n");
|
|
goto error_out_unreg;
|
|
}
|
|
|
|
return 0;
|
|
|
|
error_out_unreg:
|
|
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_head(drm_device_t * dev, drm_head_t * head)
|
|
{
|
|
drm_head_t **heads = drm_heads;
|
|
int ret;
|
|
int minor;
|
|
|
|
DRM_DEBUG("\n");
|
|
|
|
for (minor = 0; minor < drm_cards_limit; minor++, heads++) {
|
|
if (!*heads) {
|
|
|
|
*head = (drm_head_t) {
|
|
.dev = dev,.device =
|
|
MKDEV(DRM_MAJOR, minor),.minor = minor,};
|
|
|
|
if ((ret =
|
|
drm_proc_init(dev, minor, drm_proc_root,
|
|
&head->dev_root))) {
|
|
printk(KERN_ERR
|
|
"DRM: Failed to initialize /proc/dri.\n");
|
|
goto err_g1;
|
|
}
|
|
|
|
head->dev_class = drm_sysfs_device_add(drm_class, head);
|
|
if (IS_ERR(head->dev_class)) {
|
|
printk(KERN_ERR
|
|
"DRM: Error sysfs_device_add.\n");
|
|
ret = PTR_ERR(head->dev_class);
|
|
goto err_g2;
|
|
}
|
|
*heads = head;
|
|
|
|
DRM_DEBUG("new minor assigned %d\n", minor);
|
|
return 0;
|
|
}
|
|
}
|
|
DRM_ERROR("out of minors\n");
|
|
return -ENOMEM;
|
|
err_g2:
|
|
drm_proc_cleanup(minor, drm_proc_root, head->dev_root);
|
|
err_g1:
|
|
*head = (drm_head_t) {
|
|
.dev = NULL};
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Register.
|
|
*
|
|
* \param pdev - PCI device structure
|
|
* \param ent entry from the PCI ID table with device type flags
|
|
* \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 pci_dev *pdev, const struct pci_device_id *ent,
|
|
struct drm_driver *driver)
|
|
{
|
|
drm_device_t *dev;
|
|
int ret;
|
|
|
|
DRM_DEBUG("\n");
|
|
|
|
dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
|
|
if (!dev)
|
|
return -ENOMEM;
|
|
|
|
pci_enable_device(pdev);
|
|
|
|
if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
|
|
printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
|
|
goto err_g1;
|
|
}
|
|
if ((ret = drm_get_head(dev, &dev->primary)))
|
|
goto err_g1;
|
|
|
|
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
|
|
driver->name, driver->major, driver->minor, driver->patchlevel,
|
|
driver->date, dev->primary.minor);
|
|
|
|
return 0;
|
|
|
|
err_g1:
|
|
drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Put a device minor number.
|
|
*
|
|
* \param dev device data structure
|
|
* \return always zero
|
|
*
|
|
* Cleans up the proc resources. If it is the last minor then release the foreign
|
|
* "drm" data, otherwise unregisters the "drm" data, frees the dev list and
|
|
* unregisters the character device.
|
|
*/
|
|
int drm_put_dev(drm_device_t * dev)
|
|
{
|
|
DRM_DEBUG("release primary %s\n", dev->driver->pci_driver.name);
|
|
|
|
if (dev->unique) {
|
|
drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER);
|
|
dev->unique = NULL;
|
|
dev->unique_len = 0;
|
|
}
|
|
if (dev->devname) {
|
|
drm_free(dev->devname, strlen(dev->devname) + 1,
|
|
DRM_MEM_DRIVER);
|
|
dev->devname = NULL;
|
|
}
|
|
drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* 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_head(drm_head_t * head)
|
|
{
|
|
int minor = head->minor;
|
|
|
|
DRM_DEBUG("release secondary minor %d\n", minor);
|
|
|
|
drm_proc_cleanup(minor, drm_proc_root, head->dev_root);
|
|
drm_sysfs_device_remove(head->dev_class);
|
|
|
|
*head = (drm_head_t) {.dev = NULL};
|
|
|
|
drm_heads[minor] = NULL;
|
|
|
|
return 0;
|
|
}
|