diff options
Diffstat (limited to 'src/gallium/winsys/egl_drm/intel/intel_winsys_i915.c')
| -rw-r--r-- | src/gallium/winsys/egl_drm/intel/intel_winsys_i915.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/src/gallium/winsys/egl_drm/intel/intel_winsys_i915.c b/src/gallium/winsys/egl_drm/intel/intel_winsys_i915.c new file mode 100644 index 0000000000..8ec5c7e82a --- /dev/null +++ b/src/gallium/winsys/egl_drm/intel/intel_winsys_i915.c @@ -0,0 +1,184 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA + * 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 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 + * THE COPYRIGHT HOLDERS, AUTHORS 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. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ +/* + * Authors: Keith Whitwell <keithw-at-tungstengraphics-dot-com> + */ + +#include <stdlib.h> +#include <xf86drm.h> +#include "ws_dri_bufpool.h" +#include "ws_dri_bufmgr.h" + +#include "intel_context.h" +#include "intel_batchbuffer.h" +#include "intel_winsys.h" + +#include "pipe/p_util.h" +#include "pipe/p_winsys.h" +#include "i915simple/i915_winsys.h" +#include "i915simple/i915_screen.h" + + +struct intel_i915_winsys { + struct i915_winsys winsys; /**< batch buffer funcs */ + struct pipe_winsys *pws; + struct intel_context *intel; +}; + + +/* Turn a i915simple winsys into an intel/i915simple winsys: + */ +static inline struct intel_i915_winsys * +intel_i915_winsys( struct i915_winsys *sws ) +{ + return (struct intel_i915_winsys *)sws; +} + + +/* Simple batchbuffer interface: + */ + +static unsigned *intel_i915_batch_start( struct i915_winsys *sws, + unsigned dwords, + unsigned relocs ) +{ + struct intel_context *intel = intel_i915_winsys(sws)->intel; + + /* XXX: check relocs. + */ + if (intel_batchbuffer_space( intel->batch ) >= dwords * 4) { + /* XXX: Hmm, the driver can't really do much with this pointer: + */ + return (unsigned *)intel->batch->ptr; + } + else + return NULL; +} + +static void intel_i915_batch_dword( struct i915_winsys *sws, + unsigned dword ) +{ + struct intel_context *intel = intel_i915_winsys(sws)->intel; + intel_batchbuffer_emit_dword( intel->batch, dword ); +} + +static void intel_i915_batch_reloc( struct i915_winsys *sws, + struct pipe_buffer *buf, + unsigned access_flags, + unsigned delta ) +{ + struct intel_context *intel = intel_i915_winsys(sws)->intel; + unsigned flags = DRM_BO_FLAG_MEM_TT; + unsigned mask = DRM_BO_MASK_MEM; + + if (access_flags & I915_BUFFER_ACCESS_WRITE) { + flags |= DRM_BO_FLAG_WRITE; + mask |= DRM_BO_FLAG_WRITE; + } + + if (access_flags & I915_BUFFER_ACCESS_READ) { + flags |= DRM_BO_FLAG_READ; + mask |= DRM_BO_FLAG_READ; + } + +#if 0 /* JB old */ + intel_batchbuffer_emit_reloc( intel->batch, + dri_bo( buf ), + flags, mask, + delta ); +#else /* new */ + intel_offset_relocation( intel->batch, + delta, + dri_bo( buf ), + flags, + mask ); +#endif +} + + + +static void intel_i915_batch_flush( struct i915_winsys *sws, + struct pipe_fence_handle **fence ) +{ + struct intel_i915_winsys *iws = intel_i915_winsys(sws); + struct intel_context *intel = iws->intel; + union { + struct _DriFenceObject *dri; + struct pipe_fence_handle *pipe; + } fu; + + if (fence) + assert(!*fence); + + fu.dri = intel_batchbuffer_flush( intel->batch ); + + if (!fu.dri) { + assert(0); + *fence = NULL; + return; + } + + if (fu.dri) { + if (fence) + *fence = fu.pipe; + else + driFenceUnReference(&fu.dri); + } + +} + + +/** + * Create i915 hardware rendering context. + */ +struct pipe_context * +intel_create_i915simple( struct intel_context *intel, + struct pipe_winsys *winsys ) +{ + struct intel_i915_winsys *iws = CALLOC_STRUCT( intel_i915_winsys ); + struct pipe_screen *screen; + + /* Fill in this struct with callbacks that i915simple will need to + * communicate with the window system, buffer manager, etc. + */ + iws->winsys.batch_start = intel_i915_batch_start; + iws->winsys.batch_dword = intel_i915_batch_dword; + iws->winsys.batch_reloc = intel_i915_batch_reloc; + iws->winsys.batch_flush = intel_i915_batch_flush; + iws->pws = winsys; + iws->intel = intel; + + screen = i915_create_screen(winsys, PCI_CHIP_I945_GM); + assert(screen); + + /* Create the i915simple context: + */ + return i915_create_context( screen, + winsys, + &iws->winsys ); +} |