diff options
Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_ioctl.c')
| -rw-r--r-- | src/mesa/drivers/dri/intel/intel_ioctl.c | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_ioctl.c b/src/mesa/drivers/dri/intel/intel_ioctl.c new file mode 100644 index 0000000000..58c81766cd --- /dev/null +++ b/src/mesa/drivers/dri/intel/intel_ioctl.c @@ -0,0 +1,185 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * 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, sub license, 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 NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS 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. + * + **************************************************************************/ + + +#include <stdio.h> +#include <unistd.h> +#include <errno.h> +#include <sched.h> +#include <sys/types.h> +#include <sys/ioctl.h> + +#include "mtypes.h" +#include "context.h" +#include "swrast/swrast.h" + +#include "intel_context.h" +#include "intel_ioctl.h" +#include "intel_batchbuffer.h" +#include "intel_blit.h" +#include "intel_regions.h" +#include "drm.h" +#include "i915_drm.h" + +#include "intel_bufmgr.h" + +#define FILE_DEBUG_FLAG DEBUG_IOCTL + +int +intelEmitIrqLocked(struct intel_context *intel) +{ + struct drm_i915_irq_emit ie; + int ret, seq = 1; + + if (intel->no_hw) + return 1; + + /* + assert(((*(int *)intel->driHwLock) & ~DRM_LOCK_CONT) == + (DRM_LOCK_HELD|intel->hHWContext)); + */ + + ie.irq_seq = &seq; + + ret = drmCommandWriteRead(intel->driFd, DRM_I915_IRQ_EMIT, &ie, sizeof(ie)); + if (ret) { + fprintf(stderr, "%s: drm_i915_irq_emit: %d\n", __FUNCTION__, ret); + exit(1); + } + + DBG("%s --> %d\n", __FUNCTION__, seq); + + return seq; +} + +void +intelWaitIrq(struct intel_context *intel, int seq) +{ + struct drm_i915_irq_wait iw; + int ret, lastdispatch; + volatile struct drm_i915_sarea *sarea = intel->sarea; + + if (intel->no_hw) + return; + + DBG("%s %d\n", __FUNCTION__, seq); + + iw.irq_seq = seq; + + do { + lastdispatch = sarea->last_dispatch; + ret = drmCommandWrite(intel->driFd, DRM_I915_IRQ_WAIT, &iw, sizeof(iw)); + } while (ret == -EAGAIN || + ret == -EINTR || + (ret == -EBUSY && lastdispatch != sarea->last_dispatch) || + (ret == 0 && seq > sarea->last_dispatch) || + (ret == 0 && sarea->last_dispatch - seq >= (1 << 24))); + + if (ret) { + fprintf(stderr, "%s: drm_i915_irq_wait: %d\n", __FUNCTION__, ret); + exit(1); + } +} + + +int +intel_batch_ioctl(struct intel_context *intel, + GLuint start_offset, + GLuint used, + GLboolean ignore_cliprects, GLboolean allow_unlock) +{ + struct drm_i915_batchbuffer batch; + + if (intel->no_hw) + return 0; + + assert(intel->locked); + assert(used); + + DBG("%s used %d offset %x..%x ignore_cliprects %d\n", + __FUNCTION__, + used, start_offset, start_offset + used, ignore_cliprects); + + /* Throw away non-effective packets. Won't work once we have + * hardware contexts which would preserve statechanges beyond a + * single buffer. + */ + batch.start = start_offset; + batch.used = used; + batch.cliprects = intel->pClipRects; + batch.num_cliprects = ignore_cliprects ? 0 : intel->numClipRects; + batch.DR1 = 0; + batch.DR4 = ((((GLuint) intel->drawX) & 0xffff) | + (((GLuint) intel->drawY) << 16)); + + DBG("%s: 0x%x..0x%x DR4: %x cliprects: %d\n", + __FUNCTION__, + batch.start, + batch.start + batch.used * 4, batch.DR4, batch.num_cliprects); + + if (drmCommandWrite(intel->driFd, DRM_I915_BATCHBUFFER, &batch, + sizeof(batch))) { + fprintf(stderr, "DRM_I915_BATCHBUFFER: %d\n", -errno); + return -errno; + } + + return 0; +} + +int +intel_exec_ioctl(struct intel_context *intel, + GLuint used, + GLboolean ignore_cliprects, GLboolean allow_unlock, + struct drm_i915_gem_execbuffer *execbuf) +{ + int ret; + + assert(intel->locked); + assert(used); + + if (intel->no_hw) + return 0; + + execbuf->batch_start_offset = 0; + execbuf->batch_len = used; + execbuf->cliprects_ptr = (uintptr_t)intel->pClipRects; + execbuf->num_cliprects = ignore_cliprects ? 0 : intel->numClipRects; + execbuf->DR1 = 0; + execbuf->DR4 = ((((GLuint) intel->drawX) & 0xffff) | + (((GLuint) intel->drawY) << 16)); + + do { + ret = ioctl(intel->driFd, DRM_IOCTL_I915_GEM_EXECBUFFER, execbuf); + } while (ret == -EAGAIN); + + if (ret != 0) { + fprintf(stderr, "DRM_I915_GEM_EXECBUFFER: %d\n", -errno); + return -errno; + } + + return 0; +} |