diff options
Diffstat (limited to 'bsd/mga/mga_context.c')
| -rw-r--r-- | bsd/mga/mga_context.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/bsd/mga/mga_context.c b/bsd/mga/mga_context.c deleted file mode 100644 index 63515bab..00000000 --- a/bsd/mga/mga_context.c +++ /dev/null @@ -1,200 +0,0 @@ -/* mga_context.c -- IOCTLs for mga contexts - * Created: Mon Dec 13 09:51:35 1999 by faith@precisioninsight.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 - * PRECISION INSIGHT 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. - * - * Author: Rickard E. (Rik) Faith <faith@valinux.com> - * Jeff Hartmann <jhartmann@valinux.com> - * - */ - -#define __NO_VERSION__ -#include "drmP.h" -#include "mga_drv.h" - -static int mga_alloc_queue(drm_device_t *dev) -{ - int temp = drm_ctxbitmap_next(dev); - DRM_DEBUG("mga_alloc_queue: %d\n", temp); - return temp; -} - -int mga_context_switch(drm_device_t *dev, int old, int new) -{ - char buf[64]; - - atomic_inc(&dev->total_ctx); - - if (test_and_set_bit(0, &dev->context_flag)) { - DRM_ERROR("Reentering -- FIXME\n"); - return EBUSY; - } - -#if DRM_DMA_HISTOGRAM - getnanotime(&dev->ctx_start); -#endif - - DRM_DEBUG("Context switch from %d to %d\n", old, new); - - if (new == dev->last_context) { - clear_bit(0, &dev->context_flag); - return 0; - } - - if (drm_flags & DRM_FLAG_NOCTX) { - mga_context_switch_complete(dev, new); - } else { - sprintf(buf, "C %d %d\n", old, new); - drm_write_string(dev, buf); - } - - return 0; -} - -int mga_context_switch_complete(drm_device_t *dev, int new) -{ - dev->last_context = new; /* PRE/POST: This is the _only_ writer. */ - dev->last_switch = ticks; - - 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. */ -#if DRM_DMA_HISTOGRAM - { - struct timespec ts; - getnanotime(&ts); - timespecsub(&ts, &dev->lck_start); - atomic_inc(&dev->histo.ctx[drm_histogram_slot(&ts)]); - } -#endif - clear_bit(0, &dev->context_flag); - wakeup(&dev->context_wait); - - return 0; -} - -int -mga_resctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) -{ - drm_ctx_res_t res; - drm_ctx_t ctx; - int i, error; - - DRM_DEBUG("%d\n", DRM_RESERVED_CONTEXTS); - res = *(drm_ctx_res_t *) data; - if (res.count >= DRM_RESERVED_CONTEXTS) { - memset(&ctx, 0, sizeof(ctx)); - for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) { - ctx.handle = i; - error = copyout(&i, &res.contexts[i], sizeof(i)); - if (error) return error; - } - } - res.count = DRM_RESERVED_CONTEXTS; - *(drm_ctx_res_t *) data = res; - return 0; -} - -int -mga_addctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) -{ - drm_device_t *dev = kdev->si_drv1; - drm_ctx_t ctx; - - ctx = *(drm_ctx_t *) data; - if ((ctx.handle = mga_alloc_queue(dev)) == DRM_KERNEL_CONTEXT) { - /* Skip kernel's context and get a new one. */ - ctx.handle = mga_alloc_queue(dev); - } - if (ctx.handle == -1) { - DRM_DEBUG("Not enough free contexts.\n"); - /* Should this return EBUSY instead? */ - return ENOMEM; - } - DRM_DEBUG("%d\n", ctx.handle); - *(drm_ctx_t *) data = ctx; - return 0; -} - -int -mga_modctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) -{ - /* This does nothing for the mga */ - return 0; -} - -int mga_getctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) -{ - drm_ctx_t ctx; - - ctx = *(drm_ctx_t *) data; - /* This is 0, because we don't hanlde any context flags */ - ctx.flags = 0; - *(drm_ctx_t *) data = ctx; - return 0; -} - -int mga_switchctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) -{ - drm_device_t *dev = kdev->si_drv1; - drm_ctx_t ctx; - - ctx = *(drm_ctx_t *) data; - DRM_DEBUG("%d\n", ctx.handle); - return mga_context_switch(dev, dev->last_context, ctx.handle); -} - -int mga_newctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) -{ - drm_device_t *dev = kdev->si_drv1; - drm_ctx_t ctx; - - ctx = *(drm_ctx_t *) data; - DRM_DEBUG("%d\n", ctx.handle); - mga_context_switch_complete(dev, ctx.handle); - - return 0; -} - -int mga_rmctx(dev_t kdev, u_long cmd, caddr_t data, int flags, struct proc *p) -{ - drm_device_t *dev = kdev->si_drv1; - drm_ctx_t ctx; - - ctx = *(drm_ctx_t *) data; - 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 ) { - drm_ctxbitmap_free(dev, ctx.handle); - } - - return 0; -} |