--- /dev/null
+/**
+ * \file drm_drv.h
+ * Generic driver template
+ *
+ * \author Rickard E. (Rik) Faith <faith@valinux.com>
+ * \author Gareth Hughes <gareth@valinux.com>
+ *
+ * To use this template, you must at least define the following (samples
+ * given for the MGA driver):
+ *
+ * \code
+ * #define DRIVER_AUTHOR "VA Linux Systems, Inc."
+ *
+ * #define DRIVER_NAME "mga"
+ * #define DRIVER_DESC "Matrox G200/G400"
+ * #define DRIVER_DATE "20001127"
+ *
+ * #define DRIVER_MAJOR 2
+ * #define DRIVER_MINOR 0
+ * #define DRIVER_PATCHLEVEL 2
+ *
+ * #define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( mga_ioctls )
+ *
+ * #define drm_x mga_##x
+ * \endcode
+ */
+
+/*
+ * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
+ *
+ * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 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
+ * VA LINUX SYSTEMS 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"
+
+/** Ioctl table */
+drm_ioctl_desc_t drm_ioctls[] = {
+ [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = { drm_version, 0, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = { drm_getunique, 0, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = { drm_getmagic, 0, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = { drm_irq_by_busid, 0, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)] = { drm_getmap, 0, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)] = { drm_getclient, 0, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)] = { drm_getstats, 0, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_SET_VERSION)] = { drm_setversion, 0, 1 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = { drm_setunique, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = { drm_noop, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = { drm_noop, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = { drm_authmagic, 1, 1 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = { drm_addmap, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)] = { drm_rmmap, 1, 0 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = { drm_setsareactx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = { drm_getsareactx, 1, 0 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = { drm_addctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = { drm_rmctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = { drm_modctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = { drm_getctx, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = { drm_switchctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = { drm_newctx, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = { drm_resctx, 1, 0 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = { drm_adddraw, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = { drm_rmdraw, 1, 1 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = { drm_lock, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = { drm_unlock, 1, 0 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = { drm_noop, 1, 0 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)] = { drm_addbufs, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = { drm_markbufs, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = { drm_infobufs, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = { drm_mapbufs, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = { drm_freebufs, 1, 0 },
+ /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */
+
+ [DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = { drm_control, 1, 1 },
+
+#if __OS_HAS_AGP
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = { drm_agp_acquire, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = { drm_agp_release, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = { drm_agp_enable, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = { drm_agp_info, 1, 0 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)] = { drm_agp_alloc, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)] = { drm_agp_free, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)] = { drm_agp_bind, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = { drm_agp_unbind, 1, 1 },
+#endif
+
+ [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)] = { drm_sg_alloc, 1, 1 },
+ [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)] = { drm_sg_free, 1, 1 },
+
+ [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = { drm_wait_vblank, 0, 0 },
+};
+
+#define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( drm_ioctls )
+
+/**
+ * Take down the DRM device.
+ *
+ * \param dev DRM device structure.
+ *
+ * Frees every resource in \p dev.
+ *
+ * \sa drm_device and setup().
+ */
+int drm_takedown( drm_device_t *dev )
+{
+ drm_magic_entry_t *pt, *next;
+ drm_map_t *map;
+ drm_map_list_t *r_list;
+ struct list_head *list, *list_next;
+ drm_vma_entry_t *vma, *vma_next;
+ int i;
+
+ DRM_DEBUG( "\n" );
+
+ if (dev->driver->pretakedown)
+ dev->driver->pretakedown(dev);
+
+ if ( dev->irq_enabled ) drm_irq_uninstall( dev );
+
+ down( &dev->struct_sem );
+ del_timer( &dev->timer );
+
+ if ( dev->devname ) {
+ drm_free( dev->devname, strlen( dev->devname ) + 1,
+ DRM_MEM_DRIVER );
+ dev->devname = NULL;
+ }
+
+ if ( dev->unique ) {
+ drm_free( dev->unique, strlen( dev->unique ) + 1,
+ DRM_MEM_DRIVER );
+ dev->unique = NULL;
+ dev->unique_len = 0;
+ }
+ /* Clear pid list */
+ for ( i = 0 ; i < DRM_HASH_SIZE ; i++ ) {
+ for ( pt = dev->magiclist[i].head ; pt ; pt = next ) {
+ next = pt->next;
+ drm_free( pt, sizeof(*pt), DRM_MEM_MAGIC );
+ }
+ dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
+ }
+
+ /* Clear AGP information */
+ if (drm_core_has_AGP(dev) && dev->agp) {
+ drm_agp_mem_t *entry;
+ drm_agp_mem_t *nexte;
+
+ /* Remove AGP resources, but leave dev->agp
+ intact until drv_cleanup is called. */
+ for ( entry = dev->agp->memory ; entry ; entry = nexte ) {
+ nexte = entry->next;
+ if ( entry->bound ) drm_unbind_agp( entry->memory );
+ drm_free_agp( entry->memory, entry->pages );
+ drm_free( entry, sizeof(*entry), DRM_MEM_AGPLISTS );
+ }
+ dev->agp->memory = NULL;
+
+ if ( dev->agp->acquired ) drm_agp_do_release();
+
+ dev->agp->acquired = 0;
+ dev->agp->enabled = 0;
+ }
+
+ /* Clear vma list (only built for debugging) */
+ if ( dev->vmalist ) {
+ for ( vma = dev->vmalist ; vma ; vma = vma_next ) {
+ vma_next = vma->next;
+ drm_free( vma, sizeof(*vma), DRM_MEM_VMAS );
+ }
+ dev->vmalist = NULL;
+ }
+
+ if( dev->maplist ) {
+ list_for_each_safe( list, list_next, &dev->maplist->head ) {
+ r_list = (drm_map_list_t *)list;
+
+ if ( ( map = r_list->map ) ) {
+ switch ( map->type ) {
+ case _DRM_REGISTERS:
+ case _DRM_FRAME_BUFFER:
+ if (drm_core_has_MTRR(dev)) {
+ if ( map->mtrr >= 0 ) {
+ int retcode;
+ retcode = mtrr_del( map->mtrr,
+ map->offset,
+ map->size );
+ DRM_DEBUG( "mtrr_del=%d\n", retcode );
+ }
+ }
+ drm_ioremapfree( map->handle, map->size, dev );
+ break;
+ case _DRM_SHM:
+ vfree(map->handle);
+ break;
+
+ case _DRM_AGP:
+ /* Do nothing here, because this is all
+ * handled in the AGP/GART driver.
+ */
+ break;
+ case _DRM_SCATTER_GATHER:
+ /* Handle it */
+ if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) {
+ drm_sg_cleanup(dev->sg);
+ dev->sg = NULL;
+ }
+ break;
+ }
+ drm_free(map, sizeof(*map), DRM_MEM_MAPS);
+ }
+ list_del( list );
+ drm_free(r_list, sizeof(*r_list), DRM_MEM_MAPS);
+ }
+ drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS);
+ dev->maplist = NULL;
+ }
+
+ if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist ) {
+ for ( i = 0 ; i < dev->queue_count ; i++ ) {
+ if ( dev->queuelist[i] ) {
+ drm_free( dev->queuelist[i],
+ sizeof(*dev->queuelist[0]),
+ DRM_MEM_QUEUES );
+ dev->queuelist[i] = NULL;
+ }
+ }
+ drm_free( dev->queuelist,
+ dev->queue_slots * sizeof(*dev->queuelist),
+ DRM_MEM_QUEUES );
+ dev->queuelist = NULL;
+ }
+ dev->queue_count = 0;
+
+ if (drm_core_check_feature(dev, DRIVER_HAVE_DMA))
+ drm_dma_takedown( dev );
+
+ if ( dev->lock.hw_lock ) {
+ dev->sigdata.lock = dev->lock.hw_lock = NULL; /* SHM removed */
+ dev->lock.filp = NULL;
+ wake_up_interruptible( &dev->lock.lock_queue );
+ }
+ up( &dev->struct_sem );
+
+ return 0;
+}
+
+
+
+/**
+ * Module initialization. Called via init_module at module load time, or via
+ * linux/init/main.c (this is not currently supported).
+ *
+ * \return zero on success or a negative number on failure.
+ *
+ * Initializes an array of drm_device structures, and attempts to
+ * initialize all available devices, using consecutive minors, registering the
+ * stubs and initializing the AGP device.
+ *
+ * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and
+ * after the initialization for driver customization.
+ */
+int drm_init( struct drm_driver *driver )
+{
+ struct pci_dev *pdev = NULL;
+ struct pci_device_id *pid;
+ int i;
+
+ DRM_DEBUG( "\n" );
+
+ drm_mem_init();
+
+ for (i=0; driver->pci_driver.id_table[i].vendor != 0; i++) {
+ pid = (struct pci_device_id *)&driver->pci_driver.id_table[i];
+
+ pdev=NULL;
+ /* pass back in pdev to account for multiple identical cards */
+ while ((pdev = pci_get_subsys(pid->vendor, pid->device, pid->subvendor, pid->subdevice, pdev)) != NULL) {
+ /* stealth mode requires a manual probe */
+ pci_dev_get(pdev);
+ drm_probe(pdev, pid, driver);
+ }
+ }
+ return 0;
+}
+EXPORT_SYMBOL(drm_init);
+
+/**
+ * Called via cleanup_module() at module unload time.
+ *
+ * Cleans up all DRM device, calling takedown().
+ *
+ * \sa drm_init().
+ */
+static void drm_cleanup( drm_device_t *dev )
+{
+ DRM_DEBUG( "\n" );
+
+ if (!dev) {
+ DRM_ERROR("cleanup called no dev\n");
+ return;
+ }
+
+ drm_takedown( 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 = mtrr_del( dev->agp->agp_mtrr,
+ dev->agp->agp_info.aper_base,
+ dev->agp->agp_info.aper_size*1024*1024 );
+ DRM_DEBUG( "mtrr_del=%d\n", retval );
+ }
+
+ if (drm_core_has_AGP(dev) && dev->agp ) {
+ drm_free( dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS );
+ dev->agp = NULL;
+ }
+
+ if (dev->driver->postcleanup)
+ dev->driver->postcleanup(dev);
+
+ if ( drm_put_minor(dev) )
+ DRM_ERROR( "Cannot unload module\n" );
+}
+
+void drm_exit (struct drm_driver *driver)
+{
+ int i;
+ drm_device_t *dev = NULL;
+ drm_minor_t *minor;
+
+ DRM_DEBUG( "\n" );
+
+ for (i = 0; i < drm_cards_limit; i++) {
+ minor = &drm_minors[i];
+ if (!minor->dev)
+ continue;
+ if (minor->dev->driver!=driver)
+ continue;
+
+ dev = minor->dev;
+
+ }
+ if (dev) {
+ /* release the pci driver */
+ if (dev->pdev)
+ pci_dev_put(dev->pdev);
+ drm_cleanup(dev);
+ }
+
+ DRM_INFO( "Module unloaded\n" );
+}
+EXPORT_SYMBOL(drm_exit);
+
+/** File operations structure */
+static struct file_operations drm_stub_fops = {
+ .owner = THIS_MODULE,
+ .open = drm_stub_open
+};
+
+static int __init drm_core_init(void)
+{
+ int ret = -ENOMEM;
+
+ drm_cards_limit = (drm_cards_limit < DRM_MAX_MINOR + 1 ? drm_cards_limit : DRM_MAX_MINOR + 1);
+ drm_minors = drm_calloc(drm_cards_limit,
+ sizeof(*drm_minors), DRM_MEM_STUB);
+ if(!drm_minors)
+ goto err_p1;
+
+ if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops))
+ goto err_p1;
+
+ drm_class = drm_sysfs_create(THIS_MODULE, "drm");
+ if (IS_ERR(drm_class)) {
+ printk (KERN_ERR "DRM: Error creating drm class.\n");
+ ret = PTR_ERR(drm_class);
+ goto err_p2;
+ }
+
+ drm_proc_root = create_proc_entry("dri", S_IFDIR, NULL);
+ if (!drm_proc_root) {
+ DRM_ERROR("Cannot create /proc/dri\n");
+ ret = -1;
+ goto err_p3;
+ }
+
+ DRM_INFO( "Initialized %s %d.%d.%d %s\n",
+ DRIVER_NAME,
+ DRIVER_MAJOR,
+ DRIVER_MINOR,
+ DRIVER_PATCHLEVEL,
+ DRIVER_DATE
+ );
+ return 0;
+err_p3:
+ drm_sysfs_destroy(drm_class);
+err_p2:
+ unregister_chrdev(DRM_MAJOR, "drm");
+ drm_free(drm_minors, sizeof(*drm_minors) * drm_cards_limit, DRM_MEM_STUB);
+err_p1:
+ return ret;
+}
+
+static void __exit drm_core_exit (void)
+{
+ remove_proc_entry("dri", NULL);
+ drm_sysfs_destroy(drm_class);
+
+ unregister_chrdev(DRM_MAJOR, "drm");
+
+ drm_free(drm_minors, sizeof(*drm_minors) *
+ drm_cards_limit, DRM_MEM_STUB);
+}
+
+
+module_init( drm_core_init );
+module_exit( drm_core_exit );
+
+
+/**
+ * Get version information
+ *
+ * \param inode device inode.
+ * \param filp file pointer.
+ * \param cmd command.
+ * \param arg user argument, pointing to a drm_version structure.
+ * \return zero on success or negative number on failure.
+ *
+ * Fills in the version information in \p arg.
+ */
+int drm_version( struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg )
+{
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->dev;
+ drm_version_t __user *argp = (void __user *)arg;
+ drm_version_t version;
+ int ret;
+
+ if ( copy_from_user( &version, argp, sizeof(version) ) )
+ return -EFAULT;
+
+ /* version is a required function to return the personality module version */
+ if ((ret = dev->driver->version(&version)))
+ return ret;
+
+ if ( copy_to_user( argp, &version, sizeof(version) ) )
+ return -EFAULT;
+ return 0;
+}
+
+
+
+/**
+ * Called whenever a process performs an ioctl on /dev/drm.
+ *
+ * \param inode device inode.
+ * \param filp file pointer.
+ * \param cmd command.
+ * \param arg user argument.
+ * \return zero on success or negative number on failure.
+ *
+ * Looks up the ioctl function in the ::ioctls table, checking for root
+ * previleges if so required, and dispatches to the respective function.
+ */
+int drm_ioctl( struct inode *inode, struct file *filp,
+ unsigned int cmd, unsigned long arg )
+{
+ drm_file_t *priv = filp->private_data;
+ drm_device_t *dev = priv->dev;
+ drm_ioctl_desc_t *ioctl;
+ drm_ioctl_t *func;
+ unsigned int nr = DRM_IOCTL_NR(cmd);
+ int retcode = -EINVAL;
+
+ atomic_inc( &dev->ioctl_count );
+ atomic_inc( &dev->counts[_DRM_STAT_IOCTLS] );
+ ++priv->ioctl_count;
+
+ DRM_DEBUG( "pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n",
+ current->pid, cmd, nr, (long)old_encode_dev(dev->device),
+ priv->authenticated );
+
+ if (nr < DRIVER_IOCTL_COUNT)
+ ioctl = &drm_ioctls[nr];
+ else if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls))
+ ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE];
+ else
+ goto err_i1;
+
+ func = ioctl->func;
+ /* is there a local override? */
+ if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl)
+ func = dev->driver->dma_ioctl;
+
+ if ( !func ) {
+ DRM_DEBUG( "no function\n" );
+ retcode = -EINVAL;
+ } else if ( ( ioctl->root_only && !capable( CAP_SYS_ADMIN ) )||
+ ( ioctl->auth_needed && !priv->authenticated ) ) {
+ retcode = -EACCES;
+ } else {
+ retcode = func( inode, filp, cmd, arg );
+ }
+
+err_i1:
+ atomic_dec( &dev->ioctl_count );
+ if (retcode) DRM_DEBUG( "ret = %x\n", retcode);
+ return retcode;
+}
+EXPORT_SYMBOL(drm_ioctl);
+
git://git.onelab.eu / linux-2.6.git / blobdiff