1 files changed, 0 insertions, 471 deletions
diff --git a/drivers/char/drm/drm_context.c b/drivers/char/drm/drm_context.c
deleted file mode 100644
index d505f695421..00000000000
--- a/drivers/char/drm/drm_context.c
+++ /dev/null
@@ -1,471 +0,0 @@
-/**
- * \file drm_context.c
- * IOCTLs for generic contexts
- *
- * \author Rickard E. (Rik) Faith <faith@valinux.com>
- * \author Gareth Hughes <gareth@valinux.com>
- */
-
-/*
- * Created: Fri Nov 24 18:31:37 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.
- */
-
-/*
- * ChangeLog:
- *  2001-11-16	Torsten Duwe <duwe@caldera.de>
- *		added context constructor/destructor hooks,
- *		needed by SiS driver's memory management.
- */
-
-#include "drmP.h"
-
-/******************************************************************/
-/** \name Context bitmap support */
-/*@{*/
-
-/**
- * Free a handle from the context bitmap.
- *
- * \param dev DRM device.
- * \param ctx_handle context handle.
- *
- * Clears the bit specified by \p ctx_handle in drm_device::ctx_bitmap and the entry
- * in drm_device::ctx_idr, while holding the drm_device::struct_mutex
- * lock.
- */
-void drm_ctxbitmap_free(struct drm_device * dev, int ctx_handle)
-{
-	mutex_lock(&dev->struct_mutex);
-	idr_remove(&dev->ctx_idr, ctx_handle);
-	mutex_unlock(&dev->struct_mutex);
-}
-
-/**
- * Context bitmap allocation.
- *
- * \param dev DRM device.
- * \return (non-negative) context handle on success or a negative number on failure.
- *
- * Allocate a new idr from drm_device::ctx_idr while holding the
- * drm_device::struct_mutex lock.
- */
-static int drm_ctxbitmap_next(struct drm_device * dev)
-{
-	int new_id;
-	int ret;
-
-again:
-	if (idr_pre_get(&dev->ctx_idr, GFP_KERNEL) == 0) {
-		DRM_ERROR("Out of memory expanding drawable idr\n");
-		return -ENOMEM;
-	}
-	mutex_lock(&dev->struct_mutex);
-	ret = idr_get_new_above(&dev->ctx_idr, NULL,
-				DRM_RESERVED_CONTEXTS, &new_id);
-	if (ret == -EAGAIN) {
-		mutex_unlock(&dev->struct_mutex);
-		goto again;
-	}
-	mutex_unlock(&dev->struct_mutex);
-	return new_id;
-}
-
-/**
- * Context bitmap initialization.
- *
- * \param dev DRM device.
- *
- * Initialise the drm_device::ctx_idr
- */
-int drm_ctxbitmap_init(struct drm_device * dev)
-{
-	idr_init(&dev->ctx_idr);
-	return 0;
-}
-
-/**
- * Context bitmap cleanup.
- *
- * \param dev DRM device.
- *
- * Free all idr members using drm_ctx_sarea_free helper function
- * while holding the drm_device::struct_mutex lock.
- */
-void drm_ctxbitmap_cleanup(struct drm_device * dev)
-{
-	mutex_lock(&dev->struct_mutex);
-	idr_remove_all(&dev->ctx_idr);
-	mutex_unlock(&dev->struct_mutex);
-}
-
-/*@}*/
-
-/******************************************************************/
-/** \name Per Context SAREA Support */
-/*@{*/
-
-/**
- * Get per-context SAREA.
- *
- * \param inode device inode.
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg user argument pointing to a drm_ctx_priv_map structure.
- * \return zero on success or a negative number on failure.
- *
- * Gets the map from drm_device::ctx_idr with the handle specified and
- * returns its handle.
- */
-int drm_getsareactx(struct drm_device *dev, void *data,
-		    struct drm_file *file_priv)
-{
-	struct drm_ctx_priv_map *request = data;
-	struct drm_map *map;
-	struct drm_map_list *_entry;
-
-	mutex_lock(&dev->struct_mutex);
-
-	map = idr_find(&dev->ctx_idr, request->ctx_id);
-	if (!map) {
-		mutex_unlock(&dev->struct_mutex);
-		return -EINVAL;
-	}
-
-	mutex_unlock(&dev->struct_mutex);
-
-	request->handle = NULL;
-	list_for_each_entry(_entry, &dev->maplist, head) {
-		if (_entry->map == map) {
-			request->handle =
-			    (void *)(unsigned long)_entry->user_token;
-			break;
-		}
-	}
-	if (request->handle == NULL)
-		return -EINVAL;
-
-	return 0;
-}
-
-/**
- * Set per-context SAREA.
- *
- * \param inode device inode.
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg user argument pointing to a drm_ctx_priv_map structure.
- * \return zero on success or a negative number on failure.
- *
- * Searches the mapping specified in \p arg and update the entry in
- * drm_device::ctx_idr with it.
- */
-int drm_setsareactx(struct drm_device *dev, void *data,
-		    struct drm_file *file_priv)
-{
-	struct drm_ctx_priv_map *request = data;
-	struct drm_map *map = NULL;
-	struct drm_map_list *r_list = NULL;
-
-	mutex_lock(&dev->struct_mutex);
-	list_for_each_entry(r_list, &dev->maplist, head) {
-		if (r_list->map
-		    && r_list->user_token == (unsigned long) request->handle)
-			goto found;
-	}
-      bad:
-	mutex_unlock(&dev->struct_mutex);
-	return -EINVAL;
-
-      found:
-	map = r_list->map;
-	if (!map)
-		goto bad;
-
-	if (IS_ERR(idr_replace(&dev->ctx_idr, map, request->ctx_id)))
-		goto bad;
-
-	mutex_unlock(&dev->struct_mutex);
-
-	return 0;
-}
-
-/*@}*/
-
-/******************************************************************/
-/** \name The actual DRM context handling routines */
-/*@{*/
-
-/**
- * Switch context.
- *
- * \param dev DRM device.
- * \param old old context handle.
- * \param new new context handle.
- * \return zero on success or a negative number on failure.
- *
- * Attempt to set drm_device::context_flag.
- */
-static int drm_context_switch(struct drm_device * dev, int old, int new)
-{
-	if (test_and_set_bit(0, &dev->context_flag)) {
-		DRM_ERROR("Reentering -- FIXME\n");
-		return -EBUSY;
-	}
-
-	DRM_DEBUG("Context switch from %d to %d\n", old, new);
-
-	if (new == dev->last_context) {
-		clear_bit(0, &dev->context_flag);
-		return 0;
-	}
-
-	return 0;
-}
-
-/**
- * Complete context switch.
- *
- * \param dev DRM device.
- * \param new new context handle.
- * \return zero on success or a negative number on failure.
- *
- * Updates drm_device::last_context and drm_device::last_switch. Verifies the
- * hardware lock is held, clears the drm_device::context_flag and wakes up
- * drm_device::context_wait.
- */
-static int drm_context_switch_complete(struct drm_device * dev, int new)
-{
-	dev->last_context = new;	/* PRE/POST: This is the _only_ writer. */
-	dev->last_switch = jiffies;
-
-	if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) {
-		DRM_ERROR("Lock isn't held after context switch\n");
-	}
-
-	/* If a context switch is ever initiated
-	   when the kernel holds the lock, release
-	   that lock here. */
-	clear_bit(0, &dev->context_flag);
-	wake_up(&dev->context_wait);
-
-	return 0;
-}
-
-/**
- * Reserve contexts.
- *
- * \param inode device inode.
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg user argument pointing to a drm_ctx_res structure.
- * \return zero on success or a negative number on failure.
- */
-int drm_resctx(struct drm_device *dev, void *data,
-	       struct drm_file *file_priv)
-{
-	struct drm_ctx_res *res = data;
-	struct drm_ctx ctx;
-	int i;
-
-	if (res->count >= DRM_RESERVED_CONTEXTS) {
-		memset(&ctx, 0, sizeof(ctx));
-		for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
-			ctx.handle = i;
-			if (copy_to_user(&res->contexts[i], &ctx, sizeof(ctx)))
-				return -EFAULT;
-		}
-	}
-	res->count = DRM_RESERVED_CONTEXTS;
-
-	return 0;
-}
-
-/**
- * Add context.
- *
- * \param inode device inode.
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg user argument pointing to a drm_ctx structure.
- * \return zero on success or a negative number on failure.
- *
- * Get a new handle for the context and copy to userspace.
- */
-int drm_addctx(struct drm_device *dev, void *data,
-	       struct drm_file *file_priv)
-{
-	struct drm_ctx_list *ctx_entry;
-	struct drm_ctx *ctx = data;
-
-	ctx->handle = drm_ctxbitmap_next(dev);
-	if (ctx->handle == DRM_KERNEL_CONTEXT) {
-		/* Skip kernel's context and get a new one. */
-		ctx->handle = drm_ctxbitmap_next(dev);
-	}
-	DRM_DEBUG("%d\n", ctx->handle);
-	if (ctx->handle == -1) {
-		DRM_DEBUG("Not enough free contexts.\n");
-		/* Should this return -EBUSY instead? */
-		return -ENOMEM;
-	}
-
-	if (ctx->handle != DRM_KERNEL_CONTEXT) {
-		if (dev->driver->context_ctor)
-			if (!dev->driver->context_ctor(dev, ctx->handle)) {
-				DRM_DEBUG("Running out of ctxs or memory.\n");
-				return -ENOMEM;
-			}
-	}
-
-	ctx_entry = drm_alloc(sizeof(*ctx_entry), DRM_MEM_CTXLIST);
-	if (!ctx_entry) {
-		DRM_DEBUG("out of memory\n");
-		return -ENOMEM;
-	}
-
-	INIT_LIST_HEAD(&ctx_entry->head);
-	ctx_entry->handle = ctx->handle;
-	ctx_entry->tag = file_priv;
-
-	mutex_lock(&dev->ctxlist_mutex);
-	list_add(&ctx_entry->head, &dev->ctxlist);
-	++dev->ctx_count;
-	mutex_unlock(&dev->ctxlist_mutex);
-
-	return 0;
-}
-
-int drm_modctx(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
-	/* This does nothing */
-	return 0;
-}
-
-/**
- * Get context.
- *
- * \param inode device inode.
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg user argument pointing to a drm_ctx structure.
- * \return zero on success or a negative number on failure.
- */
-int drm_getctx(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
-	struct drm_ctx *ctx = data;
-
-	/* This is 0, because we don't handle any context flags */
-	ctx->flags = 0;
-
-	return 0;
-}
-
-/**
- * Switch context.
- *
- * \param inode device inode.
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg user argument pointing to a drm_ctx structure.
- * \return zero on success or a negative number on failure.
- *
- * Calls context_switch().
- */
-int drm_switchctx(struct drm_device *dev, void *data,
-		  struct drm_file *file_priv)
-{
-	struct drm_ctx *ctx = data;
-
-	DRM_DEBUG("%d\n", ctx->handle);
-	return drm_context_switch(dev, dev->last_context, ctx->handle);
-}
-
-/**
- * New context.
- *
- * \param inode device inode.
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg user argument pointing to a drm_ctx structure.
- * \return zero on success or a negative number on failure.
- *
- * Calls context_switch_complete().
- */
-int drm_newctx(struct drm_device *dev, void *data,
-	       struct drm_file *file_priv)
-{
-	struct drm_ctx *ctx = data;
-
-	DRM_DEBUG("%d\n", ctx->handle);
-	drm_context_switch_complete(dev, ctx->handle);
-
-	return 0;
-}
-
-/**
- * Remove context.
- *
- * \param inode device inode.
- * \param file_priv DRM file private.
- * \param cmd command.
- * \param arg user argument pointing to a drm_ctx structure.
- * \return zero on success or a negative number on failure.
- *
- * If not the special kernel context, calls ctxbitmap_free() to free the specified context.
- */
-int drm_rmctx(struct drm_device *dev, void *data,
-	      struct drm_file *file_priv)
-{
-	struct drm_ctx *ctx = data;
-
-	DRM_DEBUG("%d\n", ctx->handle);
-	if (ctx->handle == DRM_KERNEL_CONTEXT + 1) {
-		file_priv->remove_auth_on_close = 1;
-	}
-	if (ctx->handle != DRM_KERNEL_CONTEXT) {
-		if (dev->driver->context_dtor)
-			dev->driver->context_dtor(dev, ctx->handle);
-		drm_ctxbitmap_free(dev, ctx->handle);
-	}
-
-	mutex_lock(&dev->ctxlist_mutex);
-	if (!list_empty(&dev->ctxlist)) {
-		struct drm_ctx_list *pos, *n;
-
-		list_for_each_entry_safe(pos, n, &dev->ctxlist, head) {
-			if (pos->handle == ctx->handle) {
-				list_del(&pos->head);
-				drm_free(pos, sizeof(*pos), DRM_MEM_CTXLIST);
-				--dev->ctx_count;
-			}
-		}
-	}
-	mutex_unlock(&dev->ctxlist_mutex);
-
-	return 0;
-}
-
-/*@}*/