1 files changed, 244 insertions, 337 deletions

diff --git a/usr/src/uts/common/io/drm/drm_ioctl.c b/usr/src/uts/common/io/drm/drm_ioctl.c
index 8d504a1..7efdf2b 100644
--- a/usr/src/uts/common/io/drm/drm_ioctl.c
+++ b/usr/src/uts/common/io/drm/drm_ioctl.c
@@ -1,8 +1,22 @@
 /*
- * drm_ioctl.h -- IOCTL processing for DRM -*- linux-c -*-
- * Created: Fri Jan  8 09:01:26 1999 by faith@valinux.com
+ * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
+ */
+
+/*
+ * Copyright (c) 2012 Intel Corporation.  All rights reserved.
+ */
+
+/**
+ * \file drm_ioctl.c
+ * 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.
@@ -25,400 +39,293 @@
  * 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.
- *
- * Authors:
- *    Rickard E. (Rik) Faith <faith@valinux.com>
- *    Gareth Hughes <gareth@valinux.com>
- *
- */
-
-/*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
  */
 
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
 #include "drmP.h"
+#include "drm_core.h"
 #include "drm_io32.h"
 
-/*
- * Beginning in revision 1.1 of the DRM interface, getunique will return
- * a unique in the form pci:oooo:bb:dd.f (o=domain, b=bus, d=device, f=function)
- * before setunique has been called.  The format for the bus-specific part of
- * the unique is not defined for any other bus.
+/**
+ * Get the bus id.
+ *
+ * \param inode device inode.
+ * \param file_priv DRM file private.
+ * \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.
  */
-/*ARGSUSED*/
-int
-drm_getunique(DRM_IOCTL_ARGS)
+/* LINTED */
+int drm_getunique(DRM_IOCTL_ARGS)
 {
-	DRM_DEVICE;
-	drm_unique_t	 u1;
-
-#ifdef	_MULTI_DATAMODEL
-	if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
-		drm_unique_32_t u32;
-
-		DRM_COPYFROM_WITH_RETURN(&u32, (void *)data, sizeof (u32));
-		u1.unique_len = u32.unique_len;
-		u1.unique = (char __user *)(uintptr_t)u32.unique;
-	} else
-#endif
-		DRM_COPYFROM_WITH_RETURN(&u1, (void *)data, sizeof (u1));
-
-	if (u1.unique_len >= dev->unique_len) {
-		if (dev->unique_len == 0) {
-			DRM_ERROR("drm_getunique: dev->unique_len = 0");
-			return (EFAULT);
-		}
-		if (DRM_COPY_TO_USER(u1.unique, dev->unique, dev->unique_len))
-			return (EFAULT);
-	}
-	u1.unique_len = dev->unique_len;
+	struct drm_unique *u = data;
+	struct drm_master *master = file->master;
 
-#ifdef	_MULTI_DATAMODEL
-	if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
-		drm_unique_32_t u32;
+	if (master->unique_len == 0 || master->unique == NULL) {
+		return -EFAULT;
+	}
 
-		u32.unique_len = (uint32_t)u1.unique_len;
-		u32.unique = (caddr32_t)(uintptr_t)u1.unique;
-		DRM_COPYTO_WITH_RETURN((void *)data, &u32, sizeof (u32));
-	} else
-#endif
-		DRM_COPYTO_WITH_RETURN((void *)data, &u1, sizeof (u1));
+	if (u->unique_len >= master->unique_len) {
+		if (u->unique == NULL) {
+			return -EINVAL;
+		}
+		if (DRM_COPY_TO_USER(u->unique, master->unique, master->unique_len))
+			return -EFAULT;
+	}
+	u->unique_len = master->unique_len;
 
-	return (0);
+	return 0;
 }
 
 /*
  * Deprecated in DRM version 1.1, and will return EBUSY when setversion has
  * requested version 1.1 or greater.
  */
-/*ARGSUSED*/
-int
-drm_setunique(DRM_IOCTL_ARGS)
+/* LINTED */
+int drm_setunique(DRM_IOCTL_ARGS)
 {
-	return (EINVAL);
+	return -EINVAL;
 }
 
-
-static int
-drm_set_busid(drm_device_t *dev)
+static int drm_set_busid(struct drm_device *dev, struct drm_file *file_priv)
 {
-	DRM_LOCK();
-
-	if (dev->unique != NULL) {
-		DRM_UNLOCK();
-		return (EBUSY);
-	}
-
-	dev->unique_len = 20;
-	dev->unique = drm_alloc(dev->unique_len + 1, DRM_MEM_DRIVER);
-	if (dev->unique == NULL) {
-		DRM_UNLOCK();
-		return (ENOMEM);
-	}
-
-	(void) snprintf(dev->unique, dev->unique_len, "pci:%04x:%02x:%02x.%1x",
-	    dev->pci_domain, dev->pci_bus, dev->pci_slot, dev->pci_func);
-
-	DRM_UNLOCK();
-
-	return (0);
+	struct drm_master *master = file_priv->master;
+	int len;
+
+	if (master->unique != NULL)
+		return -EBUSY;
+
+	master->unique_len = 40;
+	master->unique_size = master->unique_len;
+	master->unique = kmalloc(master->unique_size, GFP_KERNEL);
+	if (master->unique == NULL)
+		return -ENOMEM;
+
+	len = snprintf(master->unique, master->unique_len, "pci:%04x:%02x:%02x.%1x",
+	    dev->pdev->domain, dev->pdev->bus, dev->pdev->slot, dev->pdev->func);
+	if (len >= master->unique_len)
+		DRM_ERROR("buffer overflow");
+	else
+		master->unique_len = len;
+
+	return 0;
 }
 
-/*ARGSUSED*/
-int
-drm_getmap(DRM_IOCTL_ARGS)
+/**
+ * Get a mapping information.
+ *
+ * \param inode device inode.
+ * \param file_priv DRM file private.
+ * \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
+ */
+/* LINTED */
+int drm_getmap(DRM_IOCTL_ARGS)
 {
-	DRM_DEVICE;
-	drm_map_t	map;
-	drm_local_map_t    *mapinlist;
-	int		idx;
-	int		i = 0;
-
-#ifdef	_MULTI_DATAMODEL
-	if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
-		drm_map_32_t map32;
-
-		DRM_COPYFROM_WITH_RETURN(&map32, (void *)data, sizeof (map32));
-		map.offset = map32.offset;
-		map.size = map32.size;
-		map.type = map32.type;
-		map.flags = map32.flags;
-		map.handle = map32.handle;
-		map.mtrr = map32.mtrr;
-	} else
-#endif
-		DRM_COPYFROM_WITH_RETURN(&map, (void *)data, sizeof (map));
-
-	idx = (int)map.offset;
-
-	DRM_LOCK();
-	if (idx < 0) {
-		DRM_UNLOCK();
-		return (EINVAL);
-	}
-
-	TAILQ_FOREACH(mapinlist, &dev->maplist, link) {
+	struct drm_map *map = data;
+	struct drm_map_list *r_list = NULL;
+	struct list_head *list;
+	int idx;
+	int i;
+
+	idx = (int)map->offset;
+	if (idx < 0)
+		return -EINVAL;
+
+	i = 0;
+	mutex_lock(&dev->struct_mutex);
+	list_for_each(list, &dev->maplist) {
 		if (i == idx) {
-			map.offset = mapinlist->offset;
-			map.size   = mapinlist->size;
-			map.type   = mapinlist->type;
-			map.flags  = mapinlist->flags;
-			map.handle = (unsigned long long)(uintptr_t)
-			    mapinlist->handle;
-			map.mtrr   = mapinlist->mtrr;
+			r_list = list_entry(list, struct drm_map_list, head);
 			break;
 		}
 		i++;
 	}
+	if (!r_list || !r_list->map) {
+		mutex_unlock(&dev->struct_mutex);
+		return -EINVAL;
+	}
 
-	DRM_UNLOCK();
-
-	if (mapinlist == NULL)
-		return (EINVAL);
-
-#ifdef	_MULTI_DATAMODEL
-	if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
-		drm_map_32_t map32;
-
-		map32.offset = map.offset;
-		map32.size = (uint32_t)map.size;
-		map32.type = map.type;
-		map32.flags = map.flags;
-		map32.handle = (uintptr_t)map.handle;
-		map32.mtrr = map.mtrr;
-		DRM_COPYTO_WITH_RETURN((void *)data, &map32, sizeof (map32));
-	} else
-#endif
-		DRM_COPYTO_WITH_RETURN((void *)data, &map, sizeof (map));
+	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 = (unsigned long long)(uintptr_t)r_list->user_token;
+	map->mtrr = r_list->map->mtrr;
+	mutex_unlock(&dev->struct_mutex);
 
-	return (0);
+	return 0;
 }
 
-/*ARGSUSED*/
-int
-drm_getclient(DRM_IOCTL_ARGS)
+/**
+ * Get client information.
+ *
+ * \param inode device inode.
+ * \param file_priv DRM file private.
+ * \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
+ */
+/* LINTED */
+int drm_getclient(DRM_IOCTL_ARGS)
 {
-	DRM_DEVICE;
-	drm_client_t	client;
-	drm_file_t	*pt;
-	int		idx;
-	int		i = 0;
-
-#ifdef	_MULTI_DATAMODEL
-	if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
-		drm_client_32_t client32;
-
-		DRM_COPYFROM_WITH_RETURN(&client32, (void *)data,
-		    sizeof (client32));
-		client.idx = client32.idx;
-		client.auth = client32.auth;
-		client.pid = client32.pid;
-		client.uid = client32.uid;
-		client.magic = client32.magic;
-		client.iocs = client32.iocs;
-	} else
-#endif
-		DRM_COPYFROM_WITH_RETURN(&client, (void *)data,
-		    sizeof (client));
-
-	idx = client.idx;
-	DRM_LOCK();
-	TAILQ_FOREACH(pt, &dev->files, link) {
-		if (i == idx) {
-			client.auth  = pt->authenticated;
-			client.pid   = pt->pid;
-			client.uid   = pt->uid;
-			client.magic = pt->magic;
-			client.iocs  = pt->ioctl_count;
-			DRM_UNLOCK();
-
-#ifdef	_MULTI_DATAMODEL
-			if (ddi_model_convert_from(mode & FMODELS) ==
-			    DDI_MODEL_ILP32) {
-				drm_client_32_t client32;
-
-				client32.idx = client.idx;
-				client32.auth = client.auth;
-				client32.pid = (uint32_t)client.pid;
-				client32.uid = (uint32_t)client.uid;
-				client32.magic = (uint32_t)client.magic;
-				client32.iocs = (uint32_t)client.iocs;
-
-				DRM_COPYTO_WITH_RETURN((void *)data, &client32,
-				    sizeof (client32));
-			} else
-#endif
-				DRM_COPYTO_WITH_RETURN((void *)data,
-				    &client, sizeof (client));
-
-			return (0);
+	struct drm_client *client = data;
+	struct drm_file *pt;
+	int idx;
+	int i;
+
+	idx = client->idx;
+	i = 0;
+
+	mutex_lock(&dev->struct_mutex);
+	list_for_each_entry(pt, struct drm_file, &dev->filelist, lhead){
+		if (i++ >= idx) {
+			client->auth = pt->authenticated;
+			client->pid = pt->pid;
+			client->uid = pt->uid;
+			client->magic = pt->magic;
+			client->iocs = pt->ioctl_count;
+			mutex_unlock(&dev->struct_mutex);
+
+			return 0;
 		}
-		i++;
 	}
-	DRM_UNLOCK();
-	return (EINVAL);
+	mutex_unlock(&dev->struct_mutex);
+
+	return -EINVAL;
 }
 
-/*ARGSUSED*/
-int
-drm_getstats(DRM_IOCTL_ARGS)
+/**
+ * Get statistics information.
+ *
+ * \param inode device inode.
+ * \param file_priv DRM file private.
+ * \param cmd command.
+ * \param arg user argument, pointing to a drm_stats structure.
+ *
+ * \return zero on success or a negative number on failure.
+ */
+/* LINTED E_FUNC_ARG_UNUSED */
+int drm_getstats(DRM_IOCTL_ARGS)
 {
-	DRM_DEVICE;
-	drm_stats_t	stats;
-	int		i;
-
-	bzero(&stats, sizeof (stats));
+	struct drm_stats *stats = data;
+	int i;
 
-	DRM_LOCK();
+	(void) memset(stats, 0, sizeof(*stats));
 
 	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];
+		if (dev->types[i] == _DRM_STAT_LOCK)
+			stats->data[i].value =
+			    (file->master->lock.hw_lock ? file->master->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;
+	stats->count = dev->counters;
 
-	DRM_UNLOCK();
-
-#ifdef	_MULTI_DATAMODEL
-	if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
-		drm_stats_32_t stats32;
-		stats32.count = (uint32_t)stats.count;
-		for (i = 0; i < 15; i++) {
-			stats32.data[i].value = stats.data[i].value;
-			stats32.data[i].type = stats.data[i].type;
-		}
-		DRM_COPYTO_WITH_RETURN((void *)data, &stats32,
-		    sizeof (stats32));
-	} else
-#endif
-		DRM_COPYTO_WITH_RETURN((void *)data, &stats, sizeof (stats));
-
-	return (0);
+	return 0;
 }
 
-#define	DRM_IF_MAJOR	1
-#define	DRM_IF_MINOR	2
-
-/*ARGSUSED*/
-int
-drm_setversion(DRM_IOCTL_ARGS)
+/**
+ * Get device/driver capabilities
+ */
+/* LINTED E_FUNC_ARG_UNUSED */
+int drm_getcap(DRM_IOCTL_ARGS)
 {
-	DRM_DEVICE;
-	drm_set_version_t sv;
-	drm_set_version_t retv;
-	int if_version;
-
-	DRM_COPYFROM_WITH_RETURN(&sv, (void *)data, sizeof (sv));
-
-	retv.drm_di_major = DRM_IF_MAJOR;
-	retv.drm_di_minor = DRM_IF_MINOR;
-	retv.drm_dd_major = dev->driver->driver_major;
-	retv.drm_dd_minor = dev->driver->driver_minor;
-
-	DRM_COPYTO_WITH_RETURN((void *)data, &retv, sizeof (sv));
+	struct drm_get_cap *req = data;
+
+	req->value = 0;
+	switch (req->capability) {
+	case DRM_CAP_DUMB_BUFFER:
+		if (dev->driver->dumb_create)
+			req->value = 1;
+		break;
+	case DRM_CAP_VBLANK_HIGH_CRTC:
+		req->value = 1;
+		break;
+	case DRM_CAP_DUMB_PREFERRED_DEPTH:
+		req->value = dev->mode_config.preferred_depth;
+		break;
+	case DRM_CAP_DUMB_PREFER_SHADOW:
+		req->value = dev->mode_config.prefer_shadow;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
 
-	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);
+/**
+ * Setversion ioctl.
+ *
+ * \param inode device inode.
+ * \param file_priv DRM file private.
+ * \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
+ */
+/* LINTED */
+int drm_setversion(DRM_IOCTL_ARGS)
+{
+	struct drm_set_version *sv = data;
+	int if_version, retcode = 0;
+
+	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) {
+			retcode = -EINVAL;
+			goto done;
+		}
+		if_version = DRM_IF_VERSION(sv->drm_di_major,
+					    sv->drm_di_minor);
 		dev->if_version = DRM_MAX(if_version, dev->if_version);
-		if (sv.drm_di_minor >= 1) {
+		if (sv->drm_di_minor >= 1) {
 			/*
 			 * Version 1.1 includes tying of DRM to specific device
 			 */
-			(void) drm_set_busid(dev);
+			(void) drm_set_busid(dev, file);
 		}
 	}
 
-	if (sv.drm_dd_major != -1) {
-		if (sv.drm_dd_major != dev->driver->driver_major ||
-		    sv.drm_dd_minor < 0 ||
-		    sv.drm_dd_minor > dev->driver->driver_minor)
-			return (EINVAL);
+	if (sv->drm_dd_major != -1) {
+		if (sv->drm_dd_major != dev->driver->major ||
+		    sv->drm_dd_minor < 0 || sv->drm_dd_minor >
+		    dev->driver->minor) {
+			retcode = -EINVAL;
+			goto done;
+		}
+
+		/* OSOL_drm: if (dev->driver->set_version)
+			dev->driver->set_version(dev, sv); */
 	}
-	return (0);
-}
 
+done:
+	sv->drm_di_major = DRM_IF_MAJOR;
+	sv->drm_di_minor = DRM_IF_MINOR;
+	sv->drm_dd_major = dev->driver->major;
+	sv->drm_dd_minor = dev->driver->minor;
 
-/*ARGSUSED*/
-int
-drm_noop(DRM_IOCTL_ARGS)
-{
-	DRM_DEBUG("drm_noop\n");
-	return (0);
+	return retcode;
 }
 
-/*ARGSUSED*/
-int
-drm_version(DRM_IOCTL_ARGS)
+/** No-op ioctl. */
+/* LINTED */
+int drm_noop(DRM_IOCTL_ARGS)
 {
-	DRM_DEVICE;
-	drm_version_t version;
-	size_t len;
-
-#ifdef	_MULTI_DATAMODEL
-	if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
-		drm_version_32_t version32;
-
-		DRM_COPYFROM_WITH_RETURN(&version32,
-		    (void *)data, sizeof (drm_version_32_t));
-		version.name_len = version32.name_len;
-		version.name = (char *)(uintptr_t)version32.name;
-		version.date_len = version32.date_len;
-		version.date = (char *)(uintptr_t)version32.date;
-		version.desc_len = version32.desc_len;
-		version.desc = (char *)(uintptr_t)version32.desc;
-	} else
-#endif
-		DRM_COPYFROM_WITH_RETURN(&version, (void *)data,
-		    sizeof (version));
-
-#define	DRM_COPY(name, value)                                         \
-	len = strlen(value);                                          \
-	if (len > name##_len) len = name##_len;                       \
-		name##_len = strlen(value);                                   \
-	if (len && name) {                                            \
-		if (DRM_COPY_TO_USER(name, value, len))             \
-			return (EFAULT);                         \
-	}
-
-	version.version_major = dev->driver->driver_major;
-	version.version_minor = dev->driver->driver_minor;
-	version.version_patchlevel = dev->driver->driver_patchlevel;
-
-	DRM_COPY(version.name, dev->driver->driver_name);
-	DRM_COPY(version.date, dev->driver->driver_date);
-	DRM_COPY(version.desc, dev->driver->driver_desc);
-
-#ifdef	_MULTI_DATAMODEL
-	if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
-		drm_version_32_t version32;
-
-		version32.version_major = version.version_major;
-		version32.version_minor = version.version_minor;
-		version32.version_patchlevel = version.version_patchlevel;
-		version32.name_len = (uint32_t)version.name_len;
-		version32.name = (caddr32_t)(uintptr_t)version.name;
-		version32.date_len = (uint32_t)version.date_len;
-		version32.date = (caddr32_t)(uintptr_t)version.date;
-		version32.desc_len = (uint32_t)version.desc_len;
-		version32.desc = (caddr32_t)(uintptr_t)version.desc;
-		DRM_COPYTO_WITH_RETURN((void *)data, &version32,
-		    sizeof (drm_version_32_t));
-	} else
-#endif
-		DRM_COPYTO_WITH_RETURN((void *)data, &version,
-		    sizeof (version));
-
-	return (0);
+	DRM_DEBUG("\n");
+	return 0;
 }
+