Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 370 insertions, 0 deletions

diff --git a/drivers/char/drm/drm_ioctl.c b/drivers/char/drm/drm_ioctl.c
new file mode 100644
index 000000000000..39afda0ccabe
--- /dev/null
+++ b/drivers/char/drm/drm_ioctl.c
@@ -0,0 +1,370 @@
+/**
+ * \file drm_ioctl.h 
+ * IOCTL processing for DRM
+ *
+ * \author Rickard E. (Rik) Faith <faith@valinux.com>
+ * \author Gareth Hughes <gareth@valinux.com>
+ */
+
+/*
+ * Created: Fri Jan  8 09:01:26 1999 by faith@valinux.com
+ *
+ * Copyright 1999 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"
+
+#include "linux/pci.h"
+
+/**
+ * Get the bus id.
+ * 
+ * \param inode device inode.
+ * \param filp file pointer.
+ * \param cmd command.
+ * \param arg user argument, pointing to a drm_unique structure.
+ * \return zero on success or a negative number on failure.
+ *
+ * Copies the bus id from drm_device::unique into user space.
+ */
+int drm_getunique(struct inode *inode, struct file *filp,
+                   unsigned int cmd, unsigned long arg)
+{
+        drm_file_t       *priv   = filp->private_data;
+        drm_device_t     *dev    = priv->head->dev;
+        drm_unique_t     __user *argp = (void __user *)arg;
+        drm_unique_t     u;
+
+        if (copy_from_user(&u, argp, sizeof(u)))
+                return -EFAULT;
+        if (u.unique_len >= dev->unique_len) {
+                if (copy_to_user(u.unique, dev->unique, dev->unique_len))
+                        return -EFAULT;
+        }
+        u.unique_len = dev->unique_len;
+        if (copy_to_user(argp, &u, sizeof(u)))
+                return -EFAULT;
+        return 0;
+}
+
+/**
+ * Set the bus id.
+ * 
+ * \param inode device inode.
+ * \param filp file pointer.
+ * \param cmd command.
+ * \param arg user argument, pointing to a drm_unique structure.
+ * \return zero on success or a negative number on failure.
+ *
+ * Copies the bus id from userspace into drm_device::unique, and verifies that
+ * it matches the device this DRM is attached to (EINVAL otherwise).  Deprecated
+ * in interface version 1.1 and will return EBUSY when setversion has requested
+ * version 1.1 or greater.
+ */
+int drm_setunique(struct inode *inode, struct file *filp,
+                   unsigned int cmd, unsigned long arg)
+{
+        drm_file_t       *priv   = filp->private_data;
+        drm_device_t     *dev    = priv->head->dev;
+        drm_unique_t     u;
+        int              domain, bus, slot, func, ret;
+
+        if (dev->unique_len || dev->unique) return -EBUSY;
+
+        if (copy_from_user(&u, (drm_unique_t __user *)arg, sizeof(u)))
+                return -EFAULT;
+
+        if (!u.unique_len || u.unique_len > 1024) return -EINVAL;
+
+        dev->unique_len = u.unique_len;
+        dev->unique     = drm_alloc(u.unique_len + 1, DRM_MEM_DRIVER);
+        if(!dev->unique) return -ENOMEM;
+        if (copy_from_user(dev->unique, u.unique, dev->unique_len))
+                return -EFAULT;
+
+        dev->unique[dev->unique_len] = '\0';
+
+        dev->devname = drm_alloc(strlen(dev->driver->pci_driver.name) + strlen(dev->unique) + 2,
+                                  DRM_MEM_DRIVER);
+        if (!dev->devname)
+                return -ENOMEM;
+
+        sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name, dev->unique);
+
+        /* Return error if the busid submitted doesn't match the device's actual
+         * busid.
+         */
+        ret = sscanf(dev->unique, "PCI:%d:%d:%d", &bus, &slot, &func);
+        if (ret != 3)
+                return DRM_ERR(EINVAL);
+        domain = bus >> 8;
+        bus &= 0xff;
+        
+        if ((domain != dev->pci_domain) ||
+            (bus != dev->pci_bus) ||
+            (slot != dev->pci_slot) ||
+            (func != dev->pci_func))
+                return -EINVAL;
+
+        return 0;
+}
+
+static int
+drm_set_busid(drm_device_t *dev)
+{
+        if (dev->unique != NULL)
+                return EBUSY;
+
+        dev->unique_len = 20;
+        dev->unique = drm_alloc(dev->unique_len + 1, DRM_MEM_DRIVER);
+        if (dev->unique == NULL)
+                return ENOMEM;
+
+        snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%d",
+                dev->pci_domain, dev->pci_bus, dev->pci_slot, dev->pci_func);
+
+        dev->devname = drm_alloc(strlen(dev->driver->pci_driver.name) + dev->unique_len + 2,
+                                DRM_MEM_DRIVER);
+        if (dev->devname == NULL)
+                return ENOMEM;
+
+        sprintf(dev->devname, "%s@%s", dev->driver->pci_driver.name, dev->unique);
+
+        return 0;
+}
+
+
+/**
+ * Get a mapping information.
+ *
+ * \param inode device inode.
+ * \param filp file pointer.
+ * \param cmd command.
+ * \param arg user argument, pointing to a drm_map structure.
+ * 
+ * \return zero on success or a negative number on failure.
+ *
+ * Searches for the mapping with the specified offset and copies its information
+ * into userspace
+ */
+int drm_getmap( struct inode *inode, struct file *filp,
+                 unsigned int cmd, unsigned long arg )
+{
+        drm_file_t   *priv = filp->private_data;
+        drm_device_t *dev  = priv->head->dev;
+        drm_map_t    __user *argp = (void __user *)arg;
+        drm_map_t    map;
+        drm_map_list_t *r_list = NULL;
+        struct list_head *list;
+        int          idx;
+        int          i;
+
+        if (copy_from_user(&map, argp, sizeof(map)))
+                return -EFAULT;
+        idx = map.offset;
+
+        down(&dev->struct_sem);
+        if (idx < 0) {
+                up(&dev->struct_sem);
+                return -EINVAL;
+        }
+
+        i = 0;
+        list_for_each(list, &dev->maplist->head) {
+                if(i == idx) {
+                        r_list = list_entry(list, drm_map_list_t, head);
+                        break;
+                }
+                i++;
+        }
+        if(!r_list || !r_list->map) {
+                up(&dev->struct_sem);
+                return -EINVAL;
+        }
+
+        map.offset = r_list->map->offset;
+        map.size   = r_list->map->size;
+        map.type   = r_list->map->type;
+        map.flags  = r_list->map->flags;
+        map.handle = r_list->map->handle;
+        map.mtrr   = r_list->map->mtrr;
+        up(&dev->struct_sem);
+
+        if (copy_to_user(argp, &map, sizeof(map))) return -EFAULT;
+        return 0;
+}
+
+/**
+ * Get client information.
+ *
+ * \param inode device inode.
+ * \param filp file pointer.
+ * \param cmd command.
+ * \param arg user argument, pointing to a drm_client structure.
+ * 
+ * \return zero on success or a negative number on failure.
+ *
+ * Searches for the client with the specified index and copies its information
+ * into userspace
+ */
+int drm_getclient( struct inode *inode, struct file *filp,
+                    unsigned int cmd, unsigned long arg )
+{
+        drm_file_t   *priv = filp->private_data;
+        drm_device_t *dev  = priv->head->dev;
+        drm_client_t __user *argp = (void __user *)arg;
+        drm_client_t client;
+        drm_file_t   *pt;
+        int          idx;
+        int          i;
+
+        if (copy_from_user(&client, argp, sizeof(client)))
+                return -EFAULT;
+        idx = client.idx;
+        down(&dev->struct_sem);
+        for (i = 0, pt = dev->file_first; i < idx && pt; i++, pt = pt->next)
+                ;
+
+        if (!pt) {
+                up(&dev->struct_sem);
+                return -EINVAL;
+        }
+        client.auth  = pt->authenticated;
+        client.pid   = pt->pid;
+        client.uid   = pt->uid;
+        client.magic = pt->magic;
+        client.iocs  = pt->ioctl_count;
+        up(&dev->struct_sem);
+
+        if (copy_to_user((drm_client_t __user *)arg, &client, sizeof(client)))
+                return -EFAULT;
+        return 0;
+}
+
+/** 
+ * Get statistics information. 
+ * 
+ * \param inode device inode.
+ * \param filp file pointer.
+ * \param cmd command.
+ * \param arg user argument, pointing to a drm_stats structure.
+ * 
+ * \return zero on success or a negative number on failure.
+ */
+int drm_getstats( struct inode *inode, struct file *filp,
+                   unsigned int cmd, unsigned long arg )
+{
+        drm_file_t   *priv = filp->private_data;
+        drm_device_t *dev  = priv->head->dev;
+        drm_stats_t  stats;
+        int          i;
+
+        memset(&stats, 0, sizeof(stats));
+        
+        down(&dev->struct_sem);
+
+        for (i = 0; i < dev->counters; i++) {
+                if (dev->types[i] == _DRM_STAT_LOCK)
+                        stats.data[i].value
+                                = (dev->lock.hw_lock
+                                   ? dev->lock.hw_lock->lock : 0);
+                else 
+                        stats.data[i].value = atomic_read(&dev->counts[i]);
+                stats.data[i].type  = dev->types[i];
+        }
+        
+        stats.count = dev->counters;
+
+        up(&dev->struct_sem);
+
+        if (copy_to_user((drm_stats_t __user *)arg, &stats, sizeof(stats)))
+                return -EFAULT;
+        return 0;
+}
+
+/**
+ * Setversion ioctl.
+ *
+ * \param inode device inode.
+ * \param filp file pointer.
+ * \param cmd command.
+ * \param arg user argument, pointing to a drm_lock structure.
+ * \return zero on success or negative number on failure.
+ *
+ * Sets the requested interface version
+ */
+int drm_setversion(DRM_IOCTL_ARGS)
+{
+        DRM_DEVICE;
+        drm_set_version_t sv;
+        drm_set_version_t retv;
+        int if_version;
+        drm_set_version_t __user *argp = (void __user *)data;
+        drm_version_t version;
+
+        DRM_COPY_FROM_USER_IOCTL(sv, argp, sizeof(sv));
+
+        memset(&version, 0, sizeof(version));
+
+        dev->driver->version(&version);
+        retv.drm_di_major = DRM_IF_MAJOR;
+        retv.drm_di_minor = DRM_IF_MINOR;
+        retv.drm_dd_major = version.version_major;
+        retv.drm_dd_minor = version.version_minor;
+
+        DRM_COPY_TO_USER_IOCTL(argp, retv, sizeof(sv));
+
+        if (sv.drm_di_major != -1) {
+                if (sv.drm_di_major != DRM_IF_MAJOR ||
+                    sv.drm_di_minor < 0 || sv.drm_di_minor > DRM_IF_MINOR)
+                        return EINVAL;
+                if_version = DRM_IF_VERSION(sv.drm_di_major, sv.drm_dd_minor);
+                dev->if_version = DRM_MAX(if_version, dev->if_version);
+                if (sv.drm_di_minor >= 1) {
+                        /*
+                         * Version 1.1 includes tying of DRM to specific device
+                         */
+                        drm_set_busid(dev);
+                }
+        }
+
+        if (sv.drm_dd_major != -1) {
+                if (sv.drm_dd_major != version.version_major ||
+                    sv.drm_dd_minor < 0 || sv.drm_dd_minor > version.version_minor)
+                        return EINVAL;
+
+                if (dev->driver->set_version)
+                        dev->driver->set_version(dev, &sv);
+        }
+        return 0;
+}
+
+/** No-op ioctl. */
+int drm_noop(struct inode *inode, struct file *filp, unsigned int cmd,
+               unsigned long arg)
+{
+        DRM_DEBUG("\n");
+        return 0;
+}