diff options
author | Mike Gabriel <mike.gabriel@das-netzwerkteam.de> | 2015-02-02 15:02:49 +0100 |
---|---|---|
committer | Mike Gabriel <mike.gabriel@das-netzwerkteam.de> | 2015-02-02 15:02:49 +0100 |
commit | b16b9e4656e7199c2aec74a4c8ebc7a875d3ba73 (patch) | |
tree | 4361edef0d42d5bf5ac984ef72b4fac35426eae7 /nx-X11/extras/drm/bsd-core/drm_context.c | |
parent | 0d5a83e986f39982c0924652a3662e60b1f23162 (diff) | |
download | nx-libs-b16b9e4656e7199c2aec74a4c8ebc7a875d3ba73.tar.gz nx-libs-b16b9e4656e7199c2aec74a4c8ebc7a875d3ba73.tar.bz2 nx-libs-b16b9e4656e7199c2aec74a4c8ebc7a875d3ba73.zip |
massive reduction of unneeded files
Diffstat (limited to 'nx-X11/extras/drm/bsd-core/drm_context.c')
-rw-r--r-- | nx-X11/extras/drm/bsd-core/drm_context.c | 345 |
1 files changed, 0 insertions, 345 deletions
diff --git a/nx-X11/extras/drm/bsd-core/drm_context.c b/nx-X11/extras/drm/bsd-core/drm_context.c deleted file mode 100644 index 8e0095403..000000000 --- a/nx-X11/extras/drm/bsd-core/drm_context.c +++ /dev/null @@ -1,345 +0,0 @@ -/* drm_context.h -- IOCTLs for generic contexts -*- linux-c -*- - * 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. - * - * Authors: - * Rickard E. (Rik) Faith <faith@valinux.com> - * Gareth Hughes <gareth@valinux.com> - * - */ - -#include "drmP.h" - -/* ================================================================ - * Context bitmap support - */ - -void drm_ctxbitmap_free(drm_device_t *dev, int ctx_handle) -{ - if (ctx_handle < 0 || ctx_handle >= DRM_MAX_CTXBITMAP || - dev->ctx_bitmap == NULL) { - DRM_ERROR("Attempt to free invalid context handle: %d\n", - ctx_handle); - return; - } - - DRM_LOCK(); - clear_bit(ctx_handle, dev->ctx_bitmap); - dev->context_sareas[ctx_handle] = NULL; - DRM_UNLOCK(); - return; -} - -int drm_ctxbitmap_next(drm_device_t *dev) -{ - int bit; - - if (dev->ctx_bitmap == NULL) - return -1; - - DRM_LOCK(); - bit = find_first_zero_bit( dev->ctx_bitmap, DRM_MAX_CTXBITMAP ); - if (bit >= DRM_MAX_CTXBITMAP) { - DRM_UNLOCK(); - return -1; - } - - 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 != NULL) { - drm_local_map_t **ctx_sareas; - - ctx_sareas = realloc(dev->context_sareas, - dev->max_context * sizeof(*dev->context_sareas), - M_DRM, M_NOWAIT); - if (ctx_sareas == NULL) { - clear_bit(bit, dev->ctx_bitmap); - DRM_UNLOCK(); - return -1; - } - dev->context_sareas = ctx_sareas; - dev->context_sareas[bit] = NULL; - } else { - /* max_context == 1 at this point */ - dev->context_sareas = malloc(dev->max_context * - sizeof(*dev->context_sareas), M_DRM, M_NOWAIT); - if (dev->context_sareas == NULL) { - clear_bit(bit, dev->ctx_bitmap); - DRM_UNLOCK(); - return -1; - } - dev->context_sareas[bit] = NULL; - } - } - DRM_UNLOCK(); - return bit; -} - -int drm_ctxbitmap_init(drm_device_t *dev) -{ - int i; - int temp; - - DRM_LOCK(); - dev->ctx_bitmap = malloc(PAGE_SIZE, M_DRM, M_NOWAIT | M_ZERO); - if ( dev->ctx_bitmap == NULL ) { - DRM_UNLOCK(); - return DRM_ERR(ENOMEM); - } - dev->context_sareas = NULL; - dev->max_context = -1; - DRM_UNLOCK(); - - for ( i = 0 ; i < DRM_RESERVED_CONTEXTS ; i++ ) { - temp = drm_ctxbitmap_next(dev); - DRM_DEBUG( "drm_ctxbitmap_init : %d\n", temp ); - } - - return 0; -} - -void drm_ctxbitmap_cleanup(drm_device_t *dev) -{ - DRM_LOCK(); - if (dev->context_sareas != NULL) - free(dev->context_sareas, M_DRM); - free(dev->ctx_bitmap, M_DRM); - DRM_UNLOCK(); -} - -/* ================================================================ - * Per Context SAREA Support - */ - -int drm_getsareactx( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_ctx_priv_map_t request; - drm_local_map_t *map; - - DRM_COPY_FROM_USER_IOCTL( request, (drm_ctx_priv_map_t *)data, - sizeof(request) ); - - DRM_LOCK(); - if (dev->max_context < 0 || request.ctx_id >= (unsigned) dev->max_context) { - DRM_UNLOCK(); - return DRM_ERR(EINVAL); - } - - map = dev->context_sareas[request.ctx_id]; - DRM_UNLOCK(); - - request.handle = map->handle; - - DRM_COPY_TO_USER_IOCTL( (drm_ctx_priv_map_t *)data, request, sizeof(request) ); - - return 0; -} - -int drm_setsareactx( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_ctx_priv_map_t request; - drm_local_map_t *map = NULL; - - DRM_COPY_FROM_USER_IOCTL( request, (drm_ctx_priv_map_t *)data, - sizeof(request) ); - - DRM_LOCK(); - TAILQ_FOREACH(map, &dev->maplist, link) { - if (map->handle == request.handle) { - if (dev->max_context < 0) - goto bad; - if (request.ctx_id >= (unsigned) dev->max_context) - goto bad; - dev->context_sareas[request.ctx_id] = map; - DRM_UNLOCK(); - return 0; - } - } - -bad: - DRM_UNLOCK(); - return DRM_ERR(EINVAL); -} - -/* ================================================================ - * The actual DRM context handling routines - */ - -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 DRM_ERR(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; -} - -int drm_context_switch_complete(drm_device_t *dev, int new) -{ - dev->last_context = new; /* PRE/POST: This is the _only_ writer. */ - - 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 ); - - return 0; -} - -int drm_resctx(DRM_IOCTL_ARGS) -{ - drm_ctx_res_t res; - drm_ctx_t ctx; - int i; - - DRM_COPY_FROM_USER_IOCTL( res, (drm_ctx_res_t *)data, sizeof(res) ); - - if ( res.count >= DRM_RESERVED_CONTEXTS ) { - bzero(&ctx, sizeof(ctx)); - for ( i = 0 ; i < DRM_RESERVED_CONTEXTS ; i++ ) { - ctx.handle = i; - if ( DRM_COPY_TO_USER( &res.contexts[i], - &ctx, sizeof(ctx) ) ) - return DRM_ERR(EFAULT); - } - } - res.count = DRM_RESERVED_CONTEXTS; - - DRM_COPY_TO_USER_IOCTL( (drm_ctx_res_t *)data, res, sizeof(res) ); - - return 0; -} - -int drm_addctx(DRM_IOCTL_ARGS) -{ - DRM_DEVICE; - drm_ctx_t ctx; - - DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) ); - - 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 DRM_ERR(ENOMEM); - } - - if (dev->driver.context_ctor && ctx.handle != DRM_KERNEL_CONTEXT) { - DRM_LOCK(); - dev->driver.context_ctor(dev, ctx.handle); - DRM_UNLOCK(); - } - - DRM_COPY_TO_USER_IOCTL( (drm_ctx_t *)data, ctx, sizeof(ctx) ); - - return 0; -} - -int drm_modctx(DRM_IOCTL_ARGS) -{ - /* This does nothing */ - return 0; -} - -int drm_getctx(DRM_IOCTL_ARGS) -{ - drm_ctx_t ctx; - - DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) ); - - /* This is 0, because we don't handle any context flags */ - ctx.flags = 0; - - DRM_COPY_TO_USER_IOCTL( (drm_ctx_t *)data, ctx, sizeof(ctx) ); - - return 0; -} - -int drm_switchctx(DRM_IOCTL_ARGS) -{ - DRM_DEVICE; - drm_ctx_t ctx; - - DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) ); - - DRM_DEBUG( "%d\n", ctx.handle ); - return drm_context_switch(dev, dev->last_context, ctx.handle); -} - -int drm_newctx(DRM_IOCTL_ARGS) -{ - DRM_DEVICE; - drm_ctx_t ctx; - - DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) ); - - DRM_DEBUG( "%d\n", ctx.handle ); - drm_context_switch_complete(dev, ctx.handle); - - return 0; -} - -int drm_rmctx(DRM_IOCTL_ARGS) -{ - DRM_DEVICE; - drm_ctx_t ctx; - - DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) ); - - DRM_DEBUG( "%d\n", ctx.handle ); - if ( ctx.handle != DRM_KERNEL_CONTEXT ) { - if (dev->driver.context_dtor) { - DRM_LOCK(); - dev->driver.context_dtor(dev, ctx.handle); - DRM_UNLOCK(); - } - - drm_ctxbitmap_free(dev, ctx.handle); - } - - return 0; -} |