From 6677e2a10b820a5ccfd375cc627b8e41453a71da Mon Sep 17 00:00:00 2001 From: Adam Jackson Date: Wed, 19 Jul 2006 16:19:25 -0400 Subject: Delete the pre-core DRM code with extreme prejudice. --- linux/drm_context.h | 578 ---------------------------------------------------- 1 file changed, 578 deletions(-) delete mode 100644 linux/drm_context.h (limited to 'linux/drm_context.h') diff --git a/linux/drm_context.h b/linux/drm_context.h deleted file mode 100644 index b99c9947..00000000 --- a/linux/drm_context.h +++ /dev/null @@ -1,578 +0,0 @@ -/** - * \file drm_context.h - * IOCTLs for generic contexts - * - * \author Rickard E. (Rik) Faith - * \author Gareth Hughes - */ - -/* - * 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 - * 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::context_sareas, while holding the drm_device::struct_sem - * lock. - */ -void DRM(ctxbitmap_free)( drm_device_t *dev, int ctx_handle ) -{ - if ( ctx_handle < 0 ) goto failed; - if ( !dev->ctx_bitmap ) goto failed; - - if ( ctx_handle < DRM_MAX_CTXBITMAP ) { - down(&dev->struct_sem); - clear_bit( ctx_handle, dev->ctx_bitmap ); - dev->context_sareas[ctx_handle] = NULL; - up(&dev->struct_sem); - return; - } -failed: - DRM_ERROR( "Attempt to free invalid context handle: %d\n", - ctx_handle ); - return; -} - -/** - * Context bitmap allocation. - * - * \param dev DRM device. - * \return (non-negative) context handle on success or a negative number on failure. - * - * Find the first zero bit in drm_device::ctx_bitmap and (re)allocates - * drm_device::context_sareas to accommodate the new entry while holding the - * drm_device::struct_sem lock. - */ -int DRM(ctxbitmap_next)( drm_device_t *dev ) -{ - int bit; - - if(!dev->ctx_bitmap) return -1; - - down(&dev->struct_sem); - bit = find_first_zero_bit( dev->ctx_bitmap, DRM_MAX_CTXBITMAP ); - if ( bit < DRM_MAX_CTXBITMAP ) { - set_bit( bit, dev->ctx_bitmap ); - DRM_DEBUG( "drm_ctxbitmap_next bit : %d\n", bit ); - if((bit+1) > dev->max_context) { - dev->max_context = (bit+1); - if(dev->context_sareas) { - drm_map_t **ctx_sareas; - - ctx_sareas = DRM(realloc)(dev->context_sareas, - (dev->max_context - 1) * - sizeof(*dev->context_sareas), - dev->max_context * - sizeof(*dev->context_sareas), - DRM_MEM_MAPS); - if(!ctx_sareas) { - clear_bit(bit, dev->ctx_bitmap); - up(&dev->struct_sem); - return -1; - } - dev->context_sareas = ctx_sareas; - dev->context_sareas[bit] = NULL; - } else { - /* max_context == 1 at this point */ - dev->context_sareas = DRM(alloc)( - dev->max_context * - sizeof(*dev->context_sareas), - DRM_MEM_MAPS); - if(!dev->context_sareas) { - clear_bit(bit, dev->ctx_bitmap); - up(&dev->struct_sem); - return -1; - } - dev->context_sareas[bit] = NULL; - } - } - up(&dev->struct_sem); - return bit; - } - up(&dev->struct_sem); - return -1; -} - -/** - * Context bitmap initialization. - * - * \param dev DRM device. - * - * Allocates and initialize drm_device::ctx_bitmap and drm_device::context_sareas, while holding - * the drm_device::struct_sem lock. - */ -int DRM(ctxbitmap_init)( drm_device_t *dev ) -{ - int i; - int temp; - - down(&dev->struct_sem); - dev->ctx_bitmap = (unsigned long *) DRM(alloc)( PAGE_SIZE, - DRM_MEM_CTXBITMAP ); - if ( dev->ctx_bitmap == NULL ) { - up(&dev->struct_sem); - return -ENOMEM; - } - memset( (void *)dev->ctx_bitmap, 0, PAGE_SIZE ); - dev->context_sareas = NULL; - dev->max_context = -1; - up(&dev->struct_sem); - - for ( i = 0 ; i < DRM_RESERVED_CONTEXTS ; i++ ) { - temp = DRM(ctxbitmap_next)( dev ); - DRM_DEBUG( "drm_ctxbitmap_init : %d\n", temp ); - } - - return 0; -} - -/** - * Context bitmap cleanup. - * - * \param dev DRM device. - * - * Frees drm_device::ctx_bitmap and drm_device::context_sareas, while holding - * the drm_device::struct_sem lock. - */ -void DRM(ctxbitmap_cleanup)( drm_device_t *dev ) -{ - down(&dev->struct_sem); - if( dev->context_sareas ) DRM(free)( dev->context_sareas, - sizeof(*dev->context_sareas) * - dev->max_context, - DRM_MEM_MAPS ); - DRM(free)( (void *)dev->ctx_bitmap, PAGE_SIZE, DRM_MEM_CTXBITMAP ); - up(&dev->struct_sem); -} - -/*@}*/ - -/******************************************************************/ -/** \name Per Context SAREA Support */ -/*@{*/ - -/** - * Get per-context SAREA. - * - * \param inode device inode. - * \param filp file pointer. - * \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::context_sareas with the handle specified and - * returns its handle. - */ -int DRM(getsareactx)(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_ctx_priv_map_t __user *argp = (void __user *)arg; - drm_ctx_priv_map_t request; - drm_map_t *map; - - if (copy_from_user(&request, argp, sizeof(request))) - return -EFAULT; - - down(&dev->struct_sem); - if (dev->max_context < 0 || request.ctx_id >= (unsigned) dev->max_context) { - up(&dev->struct_sem); - return -EINVAL; - } - - map = dev->context_sareas[request.ctx_id]; - up(&dev->struct_sem); - - request.handle = map->handle; - if (copy_to_user(argp, &request, sizeof(request))) - return -EFAULT; - return 0; -} - -/** - * Set per-context SAREA. - * - * \param inode device inode. - * \param filp file pointer. - * \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::context_sareas with it. - */ -int DRM(setsareactx)(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_ctx_priv_map_t request; - drm_map_t *map = NULL; - drm_map_list_t *r_list = NULL; - struct list_head *list; - - if (copy_from_user(&request, - (drm_ctx_priv_map_t __user *)arg, - sizeof(request))) - return -EFAULT; - - down(&dev->struct_sem); - list_for_each(list, &dev->maplist->head) { - r_list = list_entry(list, drm_map_list_t, head); - if(r_list->map && - r_list->map->handle == request.handle) - goto found; - } -bad: - up(&dev->struct_sem); - return -EINVAL; - -found: - map = r_list->map; - if (!map) goto bad; - if (dev->max_context < 0) - goto bad; - if (request.ctx_id >= (unsigned) dev->max_context) - goto bad; - dev->context_sareas[request.ctx_id] = map; - up(&dev->struct_sem); - 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. - */ -int DRM(context_switch)( drm_device_t *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. - */ -int DRM(context_switch_complete)( drm_device_t *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 filp file pointer. - * \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 inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg ) -{ - drm_ctx_res_t res; - drm_ctx_t __user *argp = (void __user *)arg; - drm_ctx_t ctx; - int i; - - if ( copy_from_user( &res, argp, sizeof(res) ) ) - return -EFAULT; - - 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], - &i, sizeof(i) ) ) - return -EFAULT; - } - } - res.count = DRM_RESERVED_CONTEXTS; - - if ( copy_to_user( argp, &res, sizeof(res) ) ) - return -EFAULT; - return 0; -} - -/** - * Add context. - * - * \param inode device inode. - * \param filp file pointer. - * \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 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_ctx_list_t * ctx_entry; - drm_ctx_t __user *argp = (void __user *)arg; - drm_ctx_t ctx; - - if ( copy_from_user( &ctx, argp, sizeof(ctx) ) ) - return -EFAULT; - - 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->fn_tbl.context_ctor) - dev->fn_tbl.context_ctor(dev, ctx.handle); - } - - 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 = priv; - - down( &dev->ctxlist_sem ); - list_add( &ctx_entry->head, &dev->ctxlist->head ); - ++dev->ctx_count; - up( &dev->ctxlist_sem ); - - if ( copy_to_user( argp, &ctx, sizeof(ctx) ) ) - return -EFAULT; - return 0; -} - -int DRM(modctx)( struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg ) -{ - /* This does nothing */ - return 0; -} - -/** - * Get context. - * - * \param inode device inode. - * \param filp file pointer. - * \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 inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg ) -{ - drm_ctx_t __user *argp = (void __user *)arg; - drm_ctx_t ctx; - - if ( copy_from_user( &ctx, argp, sizeof(ctx) ) ) - return -EFAULT; - - /* This is 0, because we don't handle any context flags */ - ctx.flags = 0; - - if ( copy_to_user( argp, &ctx, sizeof(ctx) ) ) - return -EFAULT; - return 0; -} - -/** - * Switch context. - * - * \param inode device inode. - * \param filp file pointer. - * \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 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_ctx_t ctx; - - if ( copy_from_user( &ctx, (drm_ctx_t __user *)arg, sizeof(ctx) ) ) - return -EFAULT; - - DRM_DEBUG( "%d\n", ctx.handle ); - return DRM(context_switch)( dev, dev->last_context, ctx.handle ); -} - -/** - * New context. - * - * \param inode device inode. - * \param filp file pointer. - * \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 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_ctx_t ctx; - - if ( copy_from_user( &ctx, (drm_ctx_t __user *)arg, sizeof(ctx) ) ) - return -EFAULT; - - DRM_DEBUG( "%d\n", ctx.handle ); - DRM(context_switch_complete)( dev, ctx.handle ); - - return 0; -} - -/** - * Remove context. - * - * \param inode device inode. - * \param filp file pointer. - * \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 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_ctx_t ctx; - - if ( copy_from_user( &ctx, (drm_ctx_t __user *)arg, sizeof(ctx) ) ) - return -EFAULT; - - DRM_DEBUG( "%d\n", ctx.handle ); - if ( ctx.handle == DRM_KERNEL_CONTEXT + 1 ) { - priv->remove_auth_on_close = 1; - } - if ( ctx.handle != DRM_KERNEL_CONTEXT ) { - if (dev->fn_tbl.context_dtor) - dev->fn_tbl.context_dtor(dev, ctx.handle); - DRM(ctxbitmap_free)( dev, ctx.handle ); - } - - down( &dev->ctxlist_sem ); - if ( !list_empty( &dev->ctxlist->head ) ) { - drm_ctx_list_t *pos, *n; - - list_for_each_entry_safe( pos, n, &dev->ctxlist->head, head ) { - if ( pos->handle == ctx.handle ) { - list_del( &pos->head ); - DRM(free)( pos, sizeof(*pos), DRM_MEM_CTXLIST ); - --dev->ctx_count; - } - } - } - up( &dev->ctxlist_sem ); - - return 0; -} - -/*@}*/ - -- cgit v1.2.3