diff options
Diffstat (limited to 'src/glx')
| -rw-r--r-- | src/glx/mini/Makefile.X11 | 79 | ||||
| -rw-r--r-- | src/glx/mini/NOTES | 115 | ||||
| -rw-r--r-- | src/glx/mini/dispatch.c | 64 | ||||
| -rw-r--r-- | src/glx/mini/dri.h | 124 | ||||
| -rw-r--r-- | src/glx/mini/dri_util.c | 715 | ||||
| -rw-r--r-- | src/glx/mini/dri_util.h | 523 | ||||
| -rw-r--r-- | src/glx/mini/driver.h | 177 | ||||
| -rw-r--r-- | src/glx/mini/drm.h | 657 | ||||
| -rw-r--r-- | src/glx/mini/drmtest.c | 140 | ||||
| -rw-r--r-- | src/glx/mini/example.miniglx.conf | 26 | ||||
| -rw-r--r-- | src/glx/mini/miniglx.c | 1975 | ||||
| -rw-r--r-- | src/glx/mini/miniglxP.h | 194 | ||||
| -rw-r--r-- | src/glx/mini/miniglx_events.c | 962 | ||||
| -rw-r--r-- | src/glx/mini/sarea.h | 96 | ||||
| -rw-r--r-- | src/glx/mini/xf86drm.c | 1587 | ||||
| -rw-r--r-- | src/glx/mini/xf86drm.h | 609 |
16 files changed, 8043 insertions, 0 deletions
diff --git a/src/glx/mini/Makefile.X11 b/src/glx/mini/Makefile.X11 new file mode 100644 index 0000000000..2e818f0b01 --- /dev/null +++ b/src/glx/mini/Makefile.X11 @@ -0,0 +1,79 @@ +# Build a subset DRI-based libGL.so library. +# Indirect rendering not supported, etc. + +TOP = ../../.. + +default: linux-solo + +C_SOURCES = dispatch.c \ + dri_util.c \ + ../../mesa/glapi/glapi.c \ + ../../mesa/glapi/glthread.c \ + miniglx.c \ + miniglx_events.c \ + xf86drm.c + +OBJECTS = $(C_SOURCES:.c=.o) + +INCLUDES = -I. $(INCLUDE_DIRS) +LIBS = -ldl + +### Include directories + +INCLUDE_DIRS = \ + -I$(TOP)/include \ + -I$(TOP)/src/mesa \ + -I$(TOP)/src/mesa/main \ + -I$(TOP)/src/mesa/glapi \ + -I$(TOP)/src/mesa/math \ + -I$(TOP)/src/mesa/transform \ + -I$(TOP)/src/mesa/swrast \ + -I$(TOP)/src/mesa/swrast_setup + + +##### RULES ##### + +.c.o: + $(CC) -c $(INCLUDES) $(CFLAGS) $(DEFINES) $< -o $@ + +.S.o: + $(CC) -c $(INCLUDES) $(CFLAGS) $(DEFINES) $< -o $@ + + +##### TARGETS ##### + +targets: depend libGL.so.1.2 + +libGL.so.1.2: $(OBJECTS) Makefile.X11 + rm -f $@ && gcc -shared -Wl,-soname,libGL.so -Wl,-Bsymbolic $(OBJECTS) $(LIBS) -o $@ + rm -f $(TOP)/lib/libGL.so* + rm -f $(TOP)/lib/miniglx.conf + install -D libGL.so.1.2 $(TOP)/lib/libGL.so.1.2 + ln -s libGL.so.1.2 $(TOP)/lib/libGL.so.1 + ln -s libGL.so.1 $(TOP)/lib/libGL.so + install example.miniglx.conf $(TOP)/lib/miniglx.conf + +drmtest: xf86drm.o drmtest.o + rm -f drmtest && $(CC) -o drmtest xf86drm.o drmtest.o + +# Run 'make -f Makefile.X11 dep' to update the dependencies if you change +# what's included by any source file. +depend: $(C_SOURCES) $(ASM_SOURCES) + makedepend -fdepend -Y $(INCLUDES) \ + $(C_SOURCES) $(ASM_SOURCES) + + +# Emacs tags +tags: + etags `find . -name \*.[ch]` `find ../include` + + +# Remove .o and backup files +clean: + -rm -f drmtest $(TOP)/lib/libGL.so* + -rm -f */*.o */*~ */*.o */*~ + + +include $(TOP)/Make-config + +include depend diff --git a/src/glx/mini/NOTES b/src/glx/mini/NOTES new file mode 100644 index 0000000000..1774107d63 --- /dev/null +++ b/src/glx/mini/NOTES @@ -0,0 +1,115 @@ + + +Getting MiniGLX up and running +------------------------------ + +It's necessary to do a bit of work to set up an environment to run miniglx. + +For the radeon driver, it's necessary to get the right set of kernel +modules installed before attempting to run any programs: + + rmmod radeon agpgart; + insmod agpgart; + insmod $(MESA)/src/kernel/radeonfb/radeonfb.o; + insmod $(MESA)/src/kernel/radeon/radeon.o; + +For all drivers, its necessary to reach the compiled libraries, and +tell MiniGLX where to find it's configuration file: + + export LD_LIBRARY_PATH=$(MESA)/lib; + export MINIGLX_CONF=$(MESA)/lib/miniglx.conf + +------------------------------------------------------------ + +MiniGLX Example Programs +------------------------ + +The following programs will work with miniglx: + + $(MESA)/tests/miniglx + $(MESA)/xdemos/glxgears + +Thanks to the miniglut stub library, most of the mesa glut demos will +work. In particular, the following have been tested. (Note there is +no keyboard or mouse interaction with these demos). + + $(MESA)/demos/gears + $(MESA)/demos/geartrain + $(MESA)/demos/morph3d + $(MESA)/demos/isosurf + $(MESA)/demos/texobj + $(MESA)/demos/texcyl + $(MESA)/demos/gloss + $(MESA)/demos/fire + $(MESA)/demos/tunnel + $(MESA)/demos/teapot + $(MESA)/samples/prim + $(MESA)/samples/olympic + $(MESA)/samples/star + $(MESA)/samples/wave + ...etc + +In fact most of the glut demos seem to work within the constraints of +having no keyboard/mouse interactivity. Furthermore, the use of the +glut wrapper means that these programs don't require recompilation to +run under MiniGLX -- the same binary works with both regular GLX and +MiniGLX. + + +------------------------------------------------------------ + +Porting GLX apps to MiniGLX +--------------------------- + +A quick list of issues encountered in porting existing GLX apps to +MiniGLX. Listed in no particular order. + +1) No input events + +MiniGLX doesn't provide an input layer, so any X11 input event +handling in the existing app will have to be redone for whatever +input devices exist on the target. + +2) No configuration, expose events + +Many GLX and Xlib programs wait on an event to ensure the window has +become visible after being mapped. MiniGLX provides no equivalent +facility. + +3) Different headers + +X11/Xlib.h, GL/GLX.h, etc must not be used if the program is being +compiled against MiniGLX. + +The equivalent header is GL/MiniGLX.h. + +4) Different library + +It may be necessary to link directly against the minGLX libGL.so. + +5) Reduced number of Xlib and GLX entrypoints. + +By definition (MiniGLX is a subset of GLX), many Xlib and GLX +entrypoints, structures and macros are not present in MiniGLX. It +will be necessary to find and eliminate all references to +non-supported entrypoints. + + +--------------------------------------------------------------- + +Bugs in radeonfb.o -- the radeon framebuffer driver. +---------------------------------------------------- + +Several bugs have been found in the radeonfb.o framebuffer driver. +Most of these are resolved in the version included in the MiniGLX +sources, but some remain: + +1) Occasionally, after entering graphics mode, colors appear 'shifted' +or 'translated', particularly in higher resolution modes. This is +definitely a bug in radeonfb.o as this can be provoked even when using +the software dri driver (fb_dri.so). Importance: High. Workaround: +Use 800x600 as it seems to be less frequent at this resolution, +otherwise, restart the application. + + + diff --git a/src/glx/mini/dispatch.c b/src/glx/mini/dispatch.c new file mode 100644 index 0000000000..264cd4cba8 --- /dev/null +++ b/src/glx/mini/dispatch.c @@ -0,0 +1,64 @@ +/** + * \file miniglx/dispatch.c + * + * \brief C-based dispatch of the OpenGL entry points (glAccum(), glBegin(), + * etc). + * + * \author Brian Paul <brian@precisioninsight.com> + * + * \note This code IS NOT USED if we're compiling on an x86 system and using + * the glapi_x86.S assembly code. + */ + +/* + * Copyright 1998-1999 Precision Insight, 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 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. + */ + +#include <GL/gl.h> +#include "glapi.h" +#include "glapitable.h" + + +#if !(defined(USE_X86_ASM) || defined(USE_SPARC_ASM)) + +#define KEYWORD1 + +#define KEYWORD2 + +#define NAME(func) gl##func + +#define DISPATCH(func, args, msg) \ + const struct _glapi_table *dispatch; \ + dispatch = _glapi_Dispatch ? _glapi_Dispatch : _glapi_get_dispatch();\ + (dispatch->func) args + +#define RETURN_DISPATCH(func, args, msg) \ + const struct _glapi_table *dispatch; \ + dispatch = _glapi_Dispatch ? _glapi_Dispatch : _glapi_get_dispatch();\ + return (dispatch->func) args + + +#include "glapitemp.h" + +#endif /* USE_X86_ASM */ diff --git a/src/glx/mini/dri.h b/src/glx/mini/dri.h new file mode 100644 index 0000000000..71f9a1acbf --- /dev/null +++ b/src/glx/mini/dri.h @@ -0,0 +1,124 @@ +/** + * \file miniglxP.h + * \brief Define replacements for some X data types and define the DRI-related + * data structures. + * + * \note Cut down version of glxclient.h. + * + */ + +#ifndef _dri_h_ +#define _dri_h_ + +#include "driver.h" + +typedef struct __DRIscreenRec __DRIscreen; /**< \copydoc __DRIscreenRec */ +typedef struct __DRIcontextRec __DRIcontext; /**< \copydoc __DRIcontextRec */ +typedef struct __DRIdrawableRec __DRIdrawable; /**< \copydoc __DRIdrawableRec */ + +/** + * \brief Screen dependent methods. + * + * This structure is initialized during the MiniGLXDisplayRec::createScreen + * call. + */ +struct __DRIscreenRec { + /** + * \brief Method to destroy the private DRI screen data. + */ + void (*destroyScreen)(__DRIscreen *screen); + + /** + * \brief Method to create the private DRI context data and initialize the + * context dependent methods. + */ + void *(*createContext)(__DRIscreen *screen, const __GLcontextModes *glVisual, + void *sharedPrivate); + /** + * \brief Method to create the private DRI drawable data and initialize the + * drawable dependent methods. + */ + void *(*createDrawable)(__DRIscreen *screen, + int width, int height, int index, + const __GLcontextModes *glVisual); + + /* + * XXX in the future, implement this: + void *(*createPBuffer)(Display *dpy, int scrn, GLXPbuffer pbuffer, + GLXFBConfig config, __DRIdrawable *pdraw); + */ + + /** + * \brief Opaque pointer to private per screen direct rendering data. + * + * \c NULL if direct rendering is not supported on this screen. Never + * dereferenced in libGL. + */ +}; + +/** + * \brief Context dependent methods. + * + * This structure is initialized during the __DRIscreenRec::createContext call. + */ +struct __DRIcontextRec { + /** + * \brief Method to destroy the private DRI context data. + */ + void (*destroyContext)(__DRIcontext *context); + + /** + * \brief Method to bind a DRI drawable to a DRI graphics context. + * + * \todo XXX in the future, also pass a 'read' GLXDrawable for + * glXMakeCurrentReadSGI() and GLX 1.3's glXMakeContextCurrent(). + */ + GLboolean (*bindContext)(__DRIscreen *screen, __DRIdrawable *drawable, __DRIcontext *context); + + /** + * \brief Method to unbind a DRI drawable to a DRI graphics context. + */ + GLboolean (*unbindContext)(__DRIdrawable *drawable, __DRIcontext *context); + /** + * \brief Opaque pointer to private per context direct rendering data. + * + * NULL if direct rendering is not supported on the display or + * screen used to create this context. Never dereferenced in libGL. + */ +}; + +/** + * \brief Drawable dependent methods. + * + * This structure is initialized during the __DRIscreenRec::createDrawable call. + * + * __DRIscreenRec::createDrawable is not called by libGL at this time. It's + * currently used via the dri_util.c utility code instead. + */ +struct __DRIdrawableRec { + /** + * \brief Method to destroy the private DRI drawable data. + */ + void (*destroyDrawable)(__DRIdrawable *drawable); + + + /** + * \brief Method to swap the front and back buffers. + */ + void (*swapBuffers)(__DRIdrawable *drawable); + + /** + * \brief Opaque pointer to private per drawable direct rendering data. + * + * \c NULL if direct rendering is not supported on the display or + * screen used to create this drawable. Never dereferenced in libGL. + */ +}; + +typedef void *(driCreateScreenFunc)(struct DRIDriverRec *driver, + struct DRIDriverContextRec *driverContext); + +/** This must be implemented in each driver */ +extern driCreateScreenFunc __driCreateScreen; + +#endif /* _dri_h_ */ diff --git a/src/glx/mini/dri_util.c b/src/glx/mini/dri_util.c new file mode 100644 index 0000000000..6d79d2037c --- /dev/null +++ b/src/glx/mini/dri_util.c @@ -0,0 +1,715 @@ +/** + * \file dri_util.c + * \brief DRI utility functions. + * + * This module acts as glue between GLX and the actual hardware driver. A DRI + * driver doesn't really \e have to use any of this - it's optional. But, some + * useful stuff is done here that otherwise would have to be duplicated in most + * drivers. + * + * Basically, these utility functions take care of some of the dirty details of + * screen initialization, context creation, context binding, DRM setup, etc. + * + * These functions are compiled into each DRI driver so libGL.so knows nothing + * about them. + * + */ + +#include <assert.h> +#include <fcntl.h> +#include <stdarg.h> +#include <unistd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <linux/fb.h> +#include <linux/vt.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/shm.h> + +#include "sarea.h" +#include "dri_util.h" + +/** + * \brief Print message to \c stderr if the \c LIBGL_DEBUG environment variable + * is set. + * + * Is called from the drivers. + * + * \param f \e printf like format. + * + * \internal + * This function is a wrapper around vfprintf(). + */ +void +__driUtilMessage(const char *f, ...) +{ + va_list args; + + if (getenv("LIBGL_DEBUG")) { + fprintf(stderr, "libGL error: \n"); + va_start(args, f); + vfprintf(stderr, f, args); + va_end(args); + fprintf(stderr, "\n"); + } +} + + +/*****************************************************************/ +/** \name Visual utility functions */ +/*****************************************************************/ +/*@{*/ + + +/*@}*/ + + +/*****************************************************************/ +/** \name Context (un)binding functions */ +/*****************************************************************/ +/*@{*/ + + +/** + * \brief Unbind context. + * + * \param drawable __DRIdrawable + * \param context __DRIcontext + * \param will_rebind not used. + * + * \return GL_TRUE on success, or GL_FALSE on failure. + * + * \internal + * This function calls __DriverAPIRec::UnbindContext, and then decrements + * __DRIdrawablePrivateRec::refcount which must be non-zero for a successful + * return. + * + * While casting the opaque private pointers associated with the parameters into their + * respective real types it also assures they are not null. + */ +static GLboolean driUnbindContext(__DRIdrawable *drawable, + __DRIcontext *context) +{ + __DRIdrawablePrivate *pdp = (__DRIdrawablePrivate *)drawable; + __DRIcontextPrivate *pcp = (__DRIcontextPrivate *)context; + __DRIscreenPrivate *psp; + + if (pdp == NULL || pcp == NULL) + return GL_FALSE; + + if (!(psp = (__DRIscreenPrivate *)pdp->driScreenPriv)) + return GL_FALSE; + + /* Let driver unbind drawable from context */ + (*psp->DriverAPI.UnbindContext)(pcp); + + if (pdp->refcount == 0) + return GL_FALSE; + + --pdp->refcount; + + return GL_TRUE; +} + + +/** + * \brief Unbind context. + * + * \param pDRIScreen __DRIscreen + * \param drawable __DRIdrawable + * \param context __DRIcontext + * + * \internal + * This function and increments __DRIdrawablePrivateRec::refcount and calls + * __DriverAPIRec::MakeCurrent to binds the drawable. + * + * While casting the opaque private pointers into their + * respective real types it also assures they are not null. + */ +static GLboolean driBindContext(__DRIscreen *screen, __DRIdrawable *drawable, + __DRIcontext *context) +{ + __DRIscreenPrivate *psp = (__DRIscreenPrivate *)screen; + __DRIdrawablePrivate *pdp = (__DRIdrawablePrivate *)drawable; + __DRIcontextPrivate *pcp = (__DRIcontextPrivate *)context; + + if (psp == NULL) + return GL_FALSE; + + if (pdp == NULL || pcp == NULL) { + (*psp->DriverAPI.MakeCurrent)(0, 0, 0); + return GL_TRUE; + } + + /* Bind the drawable to the context */ + pcp->driDrawablePriv = pdp; + pdp->driContextPriv = pcp; + pdp->refcount++; + + /* Call device-specific MakeCurrent */ + (*psp->DriverAPI.MakeCurrent)(pcp, pdp, pdp); + + return GL_TRUE; +} + +/*@}*/ + + +/*****************************************************************/ +/** \name Drawable handling functions */ +/*****************************************************************/ +/*@{*/ + + +/** + * \brief Update private drawable information. + * + * \param pdp pointer to the private drawable information to update. + * + * \internal + * This function is a no-op. Should never be called but is referenced as an + * external symbol from client drivers. + */ +void __driUtilUpdateDrawableInfo(__DRIdrawablePrivate *pdp) +{ + __DRIscreenPrivate *psp = pdp->driScreenPriv; + + pdp->numClipRects = psp->pSAREA->drawableTable[pdp->index].flags ? 1 : 0; + pdp->lastStamp = *(pdp->pStamp); +} + + +/** + * \brief Swap buffers. + * + * \param pDRIscreen __DRIscreen + * \param drawablePrivate opaque pointer to the per-drawable private info. + * + * \internal + * This function calls __DRIdrawablePrivate::swapBuffers. + * + * Is called directly from glXSwapBuffers(). + */ +static void driSwapBuffers(__DRIdrawable *drawable) +{ + __DRIdrawablePrivate *pdp = (__DRIdrawablePrivate *)drawable; + if (pdp) + pdp->swapBuffers(pdp); +} + + +/** + * \brief Destroy per-drawable private information. + * + * \param pDRIscreen __DRIscreen + * \param drawablePrivate opaque pointer to the per-drawable private info. + * + * \internal + * This function calls __DriverAPIRec::DestroyBuffer on \p drawablePrivate, + * frees the clip rects if any, and finally frees \p drawablePrivate itself. + */ +static void driDestroyDrawable(__DRIdrawable *drawable) +{ + __DRIdrawablePrivate *pdp = (__DRIdrawablePrivate *)drawable; + __DRIscreenPrivate *psp; + + if (pdp) { + psp = pdp->driScreenPriv; + (*psp->DriverAPI.DestroyBuffer)(pdp); + if (pdp->pClipRects) + free(pdp->pClipRects); + free(pdp); + } +} + + +/** + * \brief Create the per-drawable private driver information. + * + * \param dpy the display handle. + * \param scrn the screen number. + * \param draw the GLX drawable info. + * \param vid visual ID. + * \param pdraw will receive the drawable dependent methods. + * + * + * \returns a opaque pointer to the per-drawable private info on success, or NULL + * on failure. + * + * \internal + * This function allocates and fills a __DRIdrawablePrivateRec structure, + * initializing the invariant window dimensions and clip rects. It obtains the + * visual config, converts it into a __GLcontextModesRec and passes it to + * __DriverAPIRec::CreateBuffer to create a buffer. + */ +static void *driCreateDrawable(__DRIscreen *screen, + int width, int height, int index, + const __GLcontextModes *glVisual) +{ + __DRIscreenPrivate *psp = (__DRIscreenPrivate *)screen; + __DRIdrawablePrivate *pdp; + + if (!psp) + return NULL; + + if (!(pdp = (__DRIdrawablePrivate *)malloc(sizeof(__DRIdrawablePrivate)))) + return NULL; + + pdp->index = index; + pdp->refcount = 0; + pdp->lastStamp = -1; + pdp->numBackClipRects = 0; + pdp->pBackClipRects = NULL; + + /* Initialize with the invariant window dimensions and clip rects here. + */ + pdp->x = 0; + pdp->y = 0; + pdp->w = width; + pdp->h = height; + pdp->numClipRects = 0; + pdp->pClipRects = (XF86DRIClipRectPtr) malloc(sizeof(XF86DRIClipRectRec)); + (pdp->pClipRects)[0].x1 = 0; + (pdp->pClipRects)[0].y1 = 0; + (pdp->pClipRects)[0].x2 = width; + (pdp->pClipRects)[0].y2 = height; + + pdp->driScreenPriv = psp; + pdp->driContextPriv = 0; + + pdp->frontBuffer = psp->pFB; + pdp->currentBuffer = pdp->frontBuffer; + pdp->currentPitch = psp->fbStride; + pdp->backBuffer = psp->pFB + psp->fbStride * psp->fbHeight; + + if (!(*psp->DriverAPI.CreateBuffer)(psp, pdp, glVisual, GL_FALSE)) { + free(pdp); + return NULL; + } + + pdp->entry.destroyDrawable = driDestroyDrawable; + pdp->entry.swapBuffers = driSwapBuffers; /* called by glXSwapBuffers() */ + pdp->swapBuffers = psp->DriverAPI.SwapBuffers; + + pdp->pStamp = &(psp->pSAREA->drawableTable[pdp->index].stamp); + return (void *) pdp; +} + +/*@}*/ + + +/*****************************************************************/ +/** \name Context handling functions */ +/*****************************************************************/ +/*@{*/ + + +/** + * \brief Destroy the per-context private information. + * + * \param contextPrivate opaque pointer to the per-drawable private info. + * + * \internal + * This function calls __DriverAPIRec::DestroyContext on \p contextPrivate, calls + * drmDestroyContext(), and finally frees \p contextPrivate. + */ +static void driDestroyContext(__DRIcontext *context) +{ + __DRIcontextPrivate *pcp = (__DRIcontextPrivate *)context; + __DRIscreenPrivate *psp = NULL; + + if (pcp) { + (*pcp->driScreenPriv->DriverAPI.DestroyContext)(pcp); + psp = pcp->driDrawablePriv->driScreenPriv; + if (psp->fd) { + printf(">>> drmDestroyContext(0x%x)\n", (int) pcp->hHWContext); + drmDestroyContext(psp->fd, pcp->hHWContext); + } + free(pcp); + } +} + +/** + * \brief Create the per-drawable private driver information. + * + * \param dpy the display handle. + * \param vis the visual information. + * \param sharedPrivate the shared context dependent methods or NULL if non-existent. + * \param pctx will receive the context dependent methods. + * + * \returns a opaque pointer to the per-context private information on success, or NULL + * on failure. + * + * \internal + * This function allocates and fills a __DRIcontextPrivateRec structure. It + * gets the visual, converts it into a __GLcontextModesRec and passes it + * to __DriverAPIRec::CreateContext to create the context. + */ +static void *driCreateContext(__DRIscreen *screen, + const __GLcontextModes *glVisual, + void *sharedPrivate) +{ + __DRIscreenPrivate *psp = (__DRIscreenPrivate *)screen; + __DRIcontextPrivate *pcp; + __DRIcontextPrivate *pshare = (__DRIcontextPrivate *) sharedPrivate; + void *shareCtx; + + if (!psp) + return NULL; + + if (!(pcp = (__DRIcontextPrivate *)malloc(sizeof(__DRIcontextPrivate)))) + return NULL; + + pcp->driScreenPriv = psp; + pcp->driDrawablePriv = NULL; + + if (psp->fd) { + if (drmCreateContext(psp->fd, &pcp->hHWContext)) { + fprintf(stderr, ">>> drmCreateContext failed\n"); + free(pcp); + return NULL; + } + } + + shareCtx = pshare ? pshare->driverPrivate : NULL; + + if (!(*psp->DriverAPI.CreateContext)(glVisual, pcp, shareCtx)) { + if (psp->fd) + (void) drmDestroyContext(psp->fd, pcp->hHWContext); + free(pcp); + return NULL; + } + + pcp->entry.destroyContext = driDestroyContext; + pcp->entry.bindContext = driBindContext; + pcp->entry.unbindContext = driUnbindContext; + + return pcp; +} + +/*@}*/ + + +/*****************************************************************/ +/** \name Screen handling functions */ +/*****************************************************************/ +/*@{*/ + + +/** + * \brief Destroy the per-screen private information. + * + * \param pDRIscreen __DRIscreen + * + * \internal + * This function calls __DriverAPIRec::DestroyScreen on \p screenPrivate, calls + * drmClose(), and finally frees \p screenPrivate. + */ +static void driDestroyScreen(__DRIscreen *screen) +{ + __DRIscreenPrivate *psp = (__DRIscreenPrivate *)screen; + if (psp) { + if (psp->DriverAPI.DestroyScreen) + (*psp->DriverAPI.DestroyScreen)(psp); + + if (psp->fd) + (void)drmClose(psp->fd); + + free(psp->pDevPriv); + free(psp); + } +} + + +/** + * \brief Create the per-screen private information. + * + * \param dpy the display handle. + * \param scrn the screen number. + * \param psc will receive the screen dependent methods. + * \param numConfigs number of visuals. + * \param config visuals. + * \param driverAPI driver callbacks structure. + * + * \return a pointer to the per-screen private information. + * + * \internal + * This function allocates and fills a __DRIscreenPrivateRec structure. It + * opens the DRM device verifying that the exported version matches the + * expected. It copies the driver callback functions and calls + * __DriverAPIRec::InitDriver. + * + * If a client maps the framebuffer and SAREA regions. + */ +__DRIscreenPrivate * +__driUtilCreateScreen(struct DRIDriverRec *driver, + struct DRIDriverContextRec *driverContext, + const struct __DriverAPIRec *driverAPI) +{ + __DRIscreenPrivate *psp; + + if(!(psp = (__DRIscreenPrivate *)malloc(sizeof(__DRIscreenPrivate)))) + return NULL; + + psp->fd = drmOpen(NULL, driverContext->pciBusID); + if (psp->fd < 0) { + fprintf(stderr, "libGL error: failed to open DRM: %s\n", + strerror(-psp->fd)); + free(psp); + return NULL; + } + + { + drmVersionPtr version = drmGetVersion(psp->fd); + if (version) { + psp->drmMajor = version->version_major; + psp->drmMinor = version->version_minor; + psp->drmPatch = version->version_patchlevel; + drmFreeVersion(version); + } + else { + fprintf(stderr, "libGL error: failed to get drm version: %s\n", + strerror(-psp->fd)); + free(psp); + return NULL; + } + } + + /* + * Fake various version numbers. + */ + psp->ddxMajor = 4; + psp->ddxMinor = 0; + psp->ddxPatch = 1; + psp->driMajor = 4; + psp->driMinor = 1; + psp->driPatch = 0; + + /* install driver's callback functions */ + psp->DriverAPI = *driverAPI; + + /* + * Get device-specific info. pDevPriv will point to a struct + * (such as DRIRADEONRec in xfree86/driver/ati/radeon_dri.h) + * that has information about the screen size, depth, pitch, + * ancilliary buffers, DRM mmap handles, etc. + */ + psp->fbOrigin = driverContext->shared.fbOrigin; + psp->fbSize = driverContext->shared.fbSize; + psp->fbStride = driverContext->shared.fbStride; + psp->devPrivSize = driverContext->driverClientMsgSize; + psp->pDevPriv = driverContext->driverClientMsg; + psp->fbWidth = driverContext->shared.virtualWidth; + psp->fbHeight = driverContext->shared.virtualHeight; + psp->fbBPP = driverContext->bpp; + + if ((driverContext->FBAddress != NULL) && (driverContext->pSAREA != NULL)) { + /* Already mapped in server */ + psp->pFB = driverContext->FBAddress; + psp->pSAREA = driverContext->pSAREA; + } else { + /* + * Map the framebuffer region. + */ + if (drmMap(psp->fd, driverContext->shared.hFrameBuffer, psp->fbSize, + (drmAddressPtr)&psp->pFB)) { + fprintf(stderr, "libGL error: drmMap of framebuffer failed\n"); + (void)drmClose(psp->fd); + free(psp); + return NULL; + } + + /* + * Map the SAREA region. Further mmap regions may be setup in + * each DRI driver's "createScreen" function. + */ + if (drmMap(psp->fd, driverContext->shared.hSAREA, + driverContext->shared.SAREASize, + (drmAddressPtr)&psp->pSAREA)) { + fprintf(stderr, "libGL error: drmMap of sarea failed\n"); + (void)drmUnmap((drmAddress)psp->pFB, psp->fbSize); + (void)drmClose(psp->fd); + free(psp); + return NULL; + } + +#ifdef _EMBEDDED + mprotect(psp->pSAREA, driverContext->shared.SAREASize, PROT_READ); +#endif + } + + + /* Initialize the screen specific GLX driver */ + if (psp->DriverAPI.InitDriver) { + if (!(*psp->DriverAPI.InitDriver)(psp)) { + fprintf(stderr, "libGL error: InitDriver failed\n"); + free(psp->pDevPriv); + (void)drmClose(psp->fd); + free(psp); + return NULL; + } + } + + psp->entry.destroyScreen = driDestroyScreen; + psp->entry.createContext = driCreateContext; + psp->entry.createDrawable = driCreateDrawable; + + return psp; +} + + + +/** + * \brief Create the per-screen private information. + * + * Version for drivers without a DRM module. + * + * \param dpy the display handle. + * \param scrn the screen number. + * \param numConfigs number of visuals. + * \param config visuals. + * \param driverAPI driver callbacks structure. + * + * \internal + * Same as __driUtilCreateScreen() but without opening the DRM device. + */ +__DRIscreenPrivate * +__driUtilCreateScreenNoDRM(struct DRIDriverRec *driver, + struct DRIDriverContextRec *driverContext, + const struct __DriverAPIRec *driverAPI) +{ + __DRIscreenPrivate *psp; + + psp = (__DRIscreenPrivate *)calloc(1, sizeof(__DRIscreenPrivate)); + if (!psp) + return NULL; + + psp->ddxMajor = 4; + psp->ddxMinor = 0; + psp->ddxPatch = 1; + psp->driMajor = 4; + psp->driMinor = 1; + psp->driPatch = 0; + psp->fd = 0; + + psp->fbOrigin = driverContext->shared.fbOrigin; + psp->fbSize = driverContext->shared.fbSize; + psp->fbStride = driverContext->shared.fbStride; + psp->devPrivSize = driverContext->driverClientMsgSize; + psp->pDevPriv = driverContext->driverClientMsg; + psp->fbWidth = driverContext->shared.virtualWidth; + psp->fbHeight = driverContext->shared.virtualHeight; + psp->fbBPP = driverContext->bpp; + + psp->pFB = driverContext->FBAddress; + + /* install driver's callback functions */ + psp->DriverAPI = *driverAPI; + + if ((driverContext->FBAddress != NULL) && (driverContext->pSAREA != NULL)) { + /* Already mapped in server */ + psp->pFB = driverContext->FBAddress; + psp->pSAREA = driverContext->pSAREA; + } else { + psp->fd = open("/dev/mem", O_RDWR, 0); + /* + * Map the framebuffer region. + */ + if (drmMap(psp->fd, driverContext->shared.hFrameBuffer, psp->fbSize, + (drmAddressPtr)&psp->pFB)) { + fprintf(stderr, "libGL error: drmMap of framebuffer failed\n"); + (void)drmClose(psp->fd); + free(psp); + return NULL; + } + driverContext->FBAddress = psp->pFB; + + /* + * Map the SAREA region. Non-DRM drivers use a shmem SAREA + */ + int id; + id = shmget(driverContext->shared.hSAREA, driverContext->shared.SAREASize, 0); + driverContext->pSAREA = shmat(id, NULL, 0); + if (!driverContext->pSAREA) { + fprintf(stderr, "libGL error: shmget of sarea failed\n"); + (void)drmUnmap((drmAddress)psp->pFB, psp->fbSize); + (void)drmClose(psp->fd); + free(psp); + return NULL; + } + + close(psp->fd); + psp->fd = 0; + } + + /* Initialize the screen specific GLX driver */ + if (psp->DriverAPI.InitDriver) { + if (!(*psp->DriverAPI.InitDriver)(psp)) { + fprintf(stderr, "libGL error: InitDriver failed\n"); + free(psp->pDevPriv); + free(psp); + return NULL; + } + } + + psp->entry.destroyScreen = driDestroyScreen; + psp->entry.createContext = driCreateContext; + psp->entry.createDrawable = driCreateDrawable; + + return psp; +} + +/** + * Calculate amount of swap interval used between GLX buffer swaps. + * + * The usage value, on the range [0,max], is the fraction of total swap + * interval time used between GLX buffer swaps is calculated. + * + * \f$p = t_d / (i * t_r)\f$ + * + * Where \f$t_d\$f is the time since the last GLX buffer swap, \f$i\f$ is the + * swap interval (as set by \c glXSwapIntervalSGI), and \f$t_r\f$ time + * required for a single vertical refresh period (as returned by \c + * glXGetMscRateOML). + * + * See the documentation for the GLX_MESA_swap_frame_usage extension for more + * details. + * + * \param dPriv Pointer to the private drawable structure. + * \return If less than a single swap interval time period was required + * between GLX buffer swaps, a number greater than 0 and less than + * 1.0 is returned. If exactly one swap interval time period is + * required, 1.0 is returned, and if more than one is required then + * a number greater than 1.0 will be returned. + * + * \sa glXSwapIntervalSGI(), glXGetMscRateOML(). + */ +float +driCalculateSwapUsage( __DRIdrawablePrivate *dPriv, int64_t last_swap_ust, + int64_t current_ust ) +{ + return 0.0f; +} + +/** + * Compare the current GLX API version with a driver supplied required version. + * + * The minimum required version is compared with the API version exported by + * the \c __glXGetInternalVersion function (in libGL.so). + * + * \param required_version Minimum required internal GLX API version. + * \return A tri-value return, as from strcmp is returned. A value less + * than, equal to, or greater than zero will be returned if the + * internal GLX API version is less than, equal to, or greater + * than \c required_version. + * + * \sa __glXGetInternalVersion(). + */ +int driCompareGLXAPIVersion( GLuint required_version ) +{ + return 0; +} + +/*@}*/ diff --git a/src/glx/mini/dri_util.h b/src/glx/mini/dri_util.h new file mode 100644 index 0000000000..b653b3c431 --- /dev/null +++ b/src/glx/mini/dri_util.h @@ -0,0 +1,523 @@ +/** + * \file dri_util.h + * \brief DRI utility functions definitions. + * + * This module acts as glue between GLX and the actual hardware driver. A DRI + * driver doesn't really \e have to use any of this - it's optional. But, some + * useful stuff is done here that otherwise would have to be duplicated in most + * drivers. + * + * Basically, these utility functions take care of some of the dirty details of + * screen initialization, context creation, context binding, DRM setup, etc. + * + * These functions are compiled into each DRI driver so libGL.so knows nothing + * about them. + * + * Look for more comments in the dri_util.c file. + * + * \author Kevin E. Martin <kevin@precisioninsight.com> + * \author Brian Paul <brian@precisioninsight.com> + */ + +/* + * Copyright 1998-1999 Precision Insight, 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 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. + */ + + +#ifndef _DRI_UTIL_H_ +#define _DRI_UTIL_H_ + +#include <inttypes.h> +#include "dri.h" /* public entry points */ +#include "sarea.h" /* for XF86DRISAREAPtr */ + +#define _SOLO + +typedef unsigned long CARD32; +typedef int (* PFNGLXGETUSTPROC) ( uint64_t * ust ); + +typedef struct __DRIdisplayPrivateRec __DRIdisplayPrivate; /**< \brief Alias for __DRIdisplayPrivateRec */ +typedef struct __DRIscreenPrivateRec __DRIscreenPrivate; /**< \brief Alias for __DRIscreenPrivateRec */ +typedef struct __DRIcontextPrivateRec __DRIcontextPrivate; /**< \brief Alias for __DRIcontextPrivateRec */ +typedef struct __DRIdrawablePrivateRec __DRIdrawablePrivate; /**< \brief Alias for __DRIdrawablePrivateRec */ +typedef struct __DRIswapInfoRec __DRIswapInfo; /**< \brief Alias for __DRIswapInfoPrivateRec */ + + +/** + * Used by DRI_VALIDATE_DRAWABLE_INFO + */ +#define DRI_VALIDATE_DRAWABLE_INFO_ONCE(pDrawPriv) \ + do { \ + if (*(pDrawPriv->pStamp) != pDrawPriv->lastStamp) { \ + __driUtilUpdateDrawableInfo(pDrawPriv); \ + } \ + } while (0) + + +/** + * \brief Utility macro to validate the drawable information. + * + * See __DRIdrawablePrivateRec::pStamp and __DRIdrawablePrivateRec::lastStamp. + */ +#define DRI_VALIDATE_DRAWABLE_INFO(psp, pdp) \ +do { \ + DRI_VALIDATE_DRAWABLE_INFO_ONCE(pdp); \ +} while (0) + + +/** + * Driver callback functions. + * + * Each DRI driver must have one of these structures with all the pointers set + * to appropriate functions within the driver. + * + * When glXCreateContext() is called, for example, it'll call a helper function + * dri_util.c which in turn will jump through the \a CreateContext pointer in + * this structure. + */ +struct __DriverAPIRec { + /** + * Driver initialization callback + */ + GLboolean (*InitDriver)(__DRIscreenPrivate *driScrnPriv); + + /** + * Screen destruction callback + */ + void (*DestroyScreen)(__DRIscreenPrivate *driScrnPriv); + + /** + * Context creation callback + */ + GLboolean (*CreateContext)(const __GLcontextModes *glVis, + __DRIcontextPrivate *driContextPriv, + void *sharedContextPrivate); + + /** + * Context destruction callback + */ + void (*DestroyContext)(__DRIcontextPrivate *driContextPriv); + + /** + * Buffer (drawable) creation callback + */ + GLboolean (*CreateBuffer)(__DRIscreenPrivate *driScrnPriv, + __DRIdrawablePrivate *driDrawPriv, + const __GLcontextModes *glVis, + GLboolean pixmapBuffer); + + /** + * Buffer (drawable) destruction callback + */ + void (*DestroyBuffer)(__DRIdrawablePrivate *driDrawPriv); + + /** + * Buffer swapping callback + */ + void (*SwapBuffers)(__DRIdrawablePrivate *driDrawPriv); + + /** + * Context activation callback + */ + GLboolean (*MakeCurrent)(__DRIcontextPrivate *driContextPriv, + __DRIdrawablePrivate *driDrawPriv, + __DRIdrawablePrivate *driReadPriv); + + /** + * Context unbinding callback + */ + GLboolean (*UnbindContext)(__DRIcontextPrivate *driContextPriv); + + /** + * Full screen mode opening callback. + * + * \deprecated Full screen functionality is no longer used by DRI. + * Drivers should simply install a function returning + * \c GL_TRUE for backwards compatability. + */ + GLboolean (*OpenFullScreen)(__DRIcontextPrivate *driContextPriv); + + /** + * Full screen mode closing callback. + * + * \deprecated Full screen functionality is no longer used by DRI. + * Drivers should simply install a function returning + * \c GL_TRUE for backwards compatability. + */ + GLboolean (*CloseFullScreen)(__DRIcontextPrivate *driContextPriv); + + /* Retrieves statistics about buffer swap operations. Required if + * GLX_OML_sync_control or GLX_MESA_swap_frame_usage is supported. + */ + int (*GetSwapInfo)( __DRIdrawablePrivate *dPriv, __DRIswapInfo * sInfo ); + + + /* Required if GLX_SGI_video_sync or GLX_OML_sync_control is + * supported. + */ + int (*GetMSC)( __DRIscreenPrivate * priv, int64_t * count ); + + /** + * These are required if GLX_OML_sync_control is supported. + */ + /*@{*/ + int (*WaitForMSC)( __DRIdrawablePrivate *priv, int64_t target_msc, + int64_t divisor, int64_t remainder, + int64_t * msc ); + int (*WaitForSBC)( __DRIdrawablePrivate *priv, int64_t target_sbc, + int64_t * msc, int64_t * sbc ); + + int64_t (*SwapBuffersMSC)( __DRIdrawablePrivate *priv, int64_t target_msc, + int64_t divisor, int64_t remainder ); + /*@}*/ +}; + + +struct __DRIswapInfoRec { + /** + * Number of swapBuffers operations that have been *completed*. + */ + uint64_t swap_count; + + /* + * Unadjusted system time of the last buffer swap. This is the time + * when the swap completed, not the time when swapBuffers was called. + */ + int64_t swap_ust; + + /* + * Number of swap operations that occurred after the swap deadline. That + * is if a swap happens more than swap_interval frames after the previous + * swap, it has missed its deadline. If swap_interval is 0, then the + * swap deadline is 1 frame after the previous swap. + */ + uint64_t swap_missed_count; + + /* + * Amount of time used by the last swap that missed its deadline. This + * is calculated as (__glXGetUST() - swap_ust) / (swap_interval * + * time_for_single_vrefresh)). If the actual value of swap_interval is + * 0, then 1 is used instead. If swap_missed_count is non-zero, this + * should be greater-than 1.0. + */ + float swap_missed_usage; +}; + + +/** + * \brief Per-drawable private DRI driver information. + * + */ +struct __DRIdrawablePrivateRec { + + /** + * \brief Public entry points + */ + __DRIdrawable entry; + + /** + * \brief Kernel drawable handle + * + * \note Not currently used. + */ + drmDrawable hHWDrawable; + + /** + * \brief Driver's private drawable information. + * + * This structure is opaque. + */ + void *driverPrivate; + + /** + * \brief Reference count for number of context's currently bound to this + * drawable. + * + * Once it reaches zero, the drawable can be destroyed. + * + * \note This behavior will change with GLX 1.3. + */ + int refcount; + + /** + * \brief Index of this drawable information in the SAREA. + */ + unsigned int index; + + /** + * \brief Pointer to the "drawable has changed ID" stamp in the SAREA. + */ + unsigned int *pStamp; + + /** + * \brief Last value of the stamp. + * + * If this differs from the value stored at + * __DRIdrawablePrivateRec::pStamp, then the drawable information has been + * modified by the X server, and the drawable information (below) should be + * retrieved from the X server. + */ + unsigned int lastStamp; + + /** + * \name Drawable + * Drawable information used in software fallbacks. + */ + /*@{*/ + int x; + int y; + int w; + int h; + int numClipRects; + XF86DRIClipRectPtr pClipRects; + /*@}*/ + + /** + * \name Back and depthbuffer + * Information about the back and depthbuffer where different from above. + */ + /*@{*/ + int backX; + int backY; + int backClipRectType; + int numBackClipRects; + XF86DRIClipRectPtr pBackClipRects; + /*@}*/ + + /** + * \brief Pointer to context to which this drawable is currently bound. + */ + __DRIcontextPrivate *driContextPriv; + + /** + * \brief Pointer to screen on which this drawable was created. + */ + __DRIscreenPrivate *driScreenPriv; + + int cpp; + void *frontBuffer; + void *backBuffer; + void *currentBuffer; + int currentPitch; + + int depthCpp; + void *depthBuffer; + int depthPitch; + + /** + * \brief Called via glXSwapBuffers(). + */ + void (*swapBuffers)( __DRIdrawablePrivate *dPriv ); +}; + +/** + * \brief Per-context private driver information. + */ +struct __DRIcontextPrivateRec { + /** + * \brief Public entry points + */ + __DRIcontext entry; + + /** + * \brief Kernel context handle used to access the device lock. + */ + drmContext hHWContext; + + /** + * \brief Device driver's private context data. This structure is opaque. + */ + void *driverPrivate; + + /** + * \brief Pointer to drawable currently bound to this context. + */ + __DRIdrawablePrivate *driDrawablePriv; + + /** + * \brief Pointer to screen on which this context was created. + */ + __DRIscreenPrivate *driScreenPriv; +}; + +/** + * \brief Per-screen private driver information. + */ +struct __DRIscreenPrivateRec { + + /** + * \brief Public entry points + */ + __DRIscreen entry; + + /** + * \brief Callback functions into the hardware-specific DRI driver code. + */ + struct __DriverAPIRec DriverAPI; + + /** + * \name DDX version + * DDX / 2D driver version information. + */ + /*@{*/ + int ddxMajor; + int ddxMinor; + int ddxPatch; + /*@}*/ + + /** + * \name DRI version + * DRI X extension version information. + */ + /*@{*/ + int driMajor; + int driMinor; + int driPatch; + /*@}*/ + + /** + * \name DRM version + * DRM (kernel module) version information. + */ + /*@{*/ + int drmMajor; + int drmMinor; + int drmPatch; + /*@}*/ + + /** + * \brief ID used when the client sets the drawable lock. + * + * The X server uses this value to detect if the client has died while + * holding the drawable lock. + */ + int drawLockID; + + /** + * \brief File descriptor returned when the kernel device driver is opened. + * + * Used to: + * - authenticate client to kernel + * - map the frame buffer, SAREA, etc. + * - close the kernel device driver + */ + int fd; + + /** + * \brief SAREA pointer + * + * Used to access: + * - the device lock + * - the device-independent per-drawable and per-context(?) information + */ + XF86DRISAREAPtr pSAREA; + + /** + * \name Direct frame buffer access information + * Used for software fallbacks. + */ + /*@{*/ + unsigned char *pFB; + int fbSize; + int fbOrigin; + int fbStride; + int fbWidth; + int fbHeight; + int fbBPP; + /*@}*/ + + /** + * \name Device-dependent private information (stored in the SAREA). + * + * This data is accessed by the client driver only. + */ + /*@{*/ + void *pDevPriv; + int devPrivSize; + /*@}*/ + + /** + * \brief Dummy context to which drawables are bound when not bound to any + * other context. + * + * A dummy hHWContext is created for this context, and is used by the GL + * core when a hardware lock is required but the drawable is not currently + * bound (e.g., potentially during a SwapBuffers request). The dummy + * context is created when the first "real" context is created on this + * screen. + */ + __DRIcontextPrivate dummyContextPriv; + + /** + * \brief Hash table to hold the drawable information for this screen. + */ + void *drawHash; + + /** + * \brief Device-dependent private information (not stored in the SAREA). + * + * This pointer is never touched by the DRI layer. + */ + void *private; + + /** + * \brief Full screen mode. + * + * If we're in full screen mode (via DRIOpenFullScreen()), this points to + * the drawable that was bound. Otherwise, this is NULL. + */ + __DRIdrawablePrivate *fullscreen; +}; + +extern void +__driUtilMessage(const char *f, ...); + + +extern void +__driUtilUpdateDrawableInfo(__DRIdrawablePrivate *pdp); + + +extern __DRIscreenPrivate * +__driUtilCreateScreen(struct DRIDriverRec *driver, + struct DRIDriverContextRec *driverContext, + const struct __DriverAPIRec *driverAPI); + +__DRIscreenPrivate * +__driUtilCreateScreenNoDRM(struct DRIDriverRec *driver, + struct DRIDriverContextRec *driverContext, + const struct __DriverAPIRec *driverAPI); + +extern float +driCalculateSwapUsage( __DRIdrawablePrivate *dPriv, + int64_t last_swap_ust, int64_t current_ust ); + +/* Test the version of the internal GLX API. Returns a value like strcmp. */ +extern int +driCompareGLXAPIVersion( GLuint required_version ); + +/** This is optionally implemented in each driver */ +extern void +__driRegisterExtensions( void ); + +#endif /* _DRI_UTIL_H_ */ diff --git a/src/glx/mini/driver.h b/src/glx/mini/driver.h new file mode 100644 index 0000000000..a3ec96083b --- /dev/null +++ b/src/glx/mini/driver.h @@ -0,0 +1,177 @@ +/** + * \file driver.h + * \brief DRI utility functions definitions. + * + * This module acts as glue between GLX and the actual hardware driver. A DRI + * driver doesn't really \e have to use any of this - it's optional. But, some + * useful stuff is done here that otherwise would have to be duplicated in most + * drivers. + * + * Basically, these utility functions take care of some of the dirty details of + * screen initialization, context creation, context binding, DRM setup, etc. + * + * These functions are compiled into each DRI driver so libGL.so knows nothing + * about them. + * + * Look for more comments in the dri_util.c file. + * + * \author Kevin E. Martin <kevin@precisioninsight.com> + * \author Brian Paul <brian@precisioninsight.com> + */ + +/* + * Copyright 1998-1999 Precision Insight, 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 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. + */ + +#ifndef _driver_H_ +#define _driver_H_ + +#define CAPI /* XXX this should be globally defined somewhere */ + +#include "GL/gl.h" +#include "GL/internal/glcore.h" + +/** + * \brief Clip rectangle definition. + */ +typedef struct _XF86DRIClipRect { + unsigned short x1; /**< \brief Upper: inclusive */ + unsigned short y1; /**< \brief Left: inclusive */ + unsigned short x2; /**< \brief Lower: exclusive */ + unsigned short y2; /**< \brief Right: exclusive */ +} XF86DRIClipRectRec, *XF86DRIClipRectPtr; + +/** + * \brief DRIDriverContext type. + */ +typedef struct DRIDriverContextRec { + const char *pciBusID; + int pciBus; + int pciDevice; + int pciFunc; + int chipset; + int bpp; + int cpp; + + unsigned long FBStart; /**< \brief physical address of the framebuffer */ + unsigned long MMIOStart; /**< \brief physical address of the MMIO region */ + + int FBSize; /**< \brief size of the mmap'd framebuffer in bytes */ + int MMIOSize; /**< \brief size of the mmap'd MMIO region in bytes */ + + void *FBAddress; /**< \brief start of the mmap'd framebuffer */ + void *MMIOAddress; /**< \brief start of the mmap'd MMIO region */ + + /** + * \brief Client configuration details + * + * These are computed on the server and sent to clients as part of + * the initial handshaking. + */ + struct { + unsigned long hSAREA; + int SAREASize; + unsigned long hFrameBuffer; + int fbOrigin; + int fbSize; + int fbStride; + int virtualWidth; + int virtualHeight; + } shared; + + /** + * \name From DRIInfoRec + */ + /*@{*/ + int drmFD; /**< \brief DRM device file descriptor */ + struct _XF86DRISAREA *pSAREA; + unsigned int serverContext; /**< \brief DRM context only active on server */ + /*@}*/ + + + /** + * \name Driver private + * + * Populated by __driInitFBDev() + */ + /*@{*/ + void *driverPrivate; + void *driverClientMsg; + int driverClientMsgSize; + /*@}*/ +} DRIDriverContext; + +/** + * \brief Interface to the DRI driver. + * + * This structure is retrieved from the loadable driver by the \e + * __driDriver symbol to access the Mini GLX specific hardware + * initialization and take down routines. + */ +typedef struct DRIDriverRec { + /** + * \brief Get the list of supported gl context modes. + */ + int (*initContextModes)( const DRIDriverContext *context, + int *numModes, const __GLcontextModes **modes ); + /** + * \brief Validate the framebuffer device mode + */ + int (*validateMode)( const DRIDriverContext *context ); + + /** + * \brief Examine mode returned by fbdev (may differ from the one + * requested), restore any hw regs clobbered by fbdev. + */ + int (*postValidateMode)( const DRIDriverContext *context ); + + /** + * \brief Initialize the framebuffer device. + */ + int (*initFBDev)( DRIDriverContext *context ); + + /** + * \brief Halt the framebuffer device. + */ + void (*haltFBDev)( DRIDriverContext *context ); + + + /** + * \brief Idle and shutdown hardware in preparation for a VT switch. + */ + int (*shutdownHardware)( const DRIDriverContext *context ); + + /** + * \brief Restore hardware state after regaining the VT. + */ + int (*restoreHardware)( const DRIDriverContext *context ); + + /** + * \brief Notify hardware driver of gain/loose focus. May be zero + * as this is of limited utility for most drivers. + */ + void (*notifyFocus)( int have_focus ); +} DRIDriver; + +#endif /* _driver_H_ */ diff --git a/src/glx/mini/drm.h b/src/glx/mini/drm.h new file mode 100644 index 0000000000..4180d1eb1a --- /dev/null +++ b/src/glx/mini/drm.h @@ -0,0 +1,657 @@ +/** + * \file drm.h + * \brief Header for the Direct Rendering Manager + * + * This file defines the DRM device ioctls and the strucutre of respective user + * arguments. + * + * \sa xf86drm.h and xf86drm.c for an user-friendlier interface. + * + * \author Rickard E. (Rik) Faith <faith@valinux.com> + * + * \par Acknowledgements: + * Dec 1999, Richard Henderson <rth@twiddle.net>, move to generic \c cmpxchg. + */ + +/* + * 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 + * 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. + */ + + +#ifndef _DRM_H_ +#define _DRM_H_ + +#if defined(__linux__) +#include <linux/config.h> +#include <asm/ioctl.h> /* For _IO* macros */ +#define DRM_IOCTL_NR(n) _IOC_NR(n) +#define DRM_IOC_VOID _IOC_NONE +#define DRM_IOC_READ _IOC_READ +#define DRM_IOC_WRITE _IOC_WRITE +#define DRM_IOC_READWRITE _IOC_READ|_IOC_WRITE +#define DRM_IOC(dir, group, nr, size) _IOC(dir, group, nr, size) +#elif defined(__FreeBSD__) || defined(__NetBSD__) +#if defined(__FreeBSD__) && defined(XFree86Server) +/* Prevent name collision when including sys/ioccom.h */ +#undef ioctl +#include <sys/ioccom.h> +#define ioctl(a,b,c) xf86ioctl(a,b,c) +#else +#include <sys/ioccom.h> +#endif /* __FreeBSD__ && xf86ioctl */ +#define DRM_IOCTL_NR(n) ((n) & 0xff) +#define DRM_IOC_VOID IOC_VOID +#define DRM_IOC_READ IOC_OUT +#define DRM_IOC_WRITE IOC_IN +#define DRM_IOC_READWRITE IOC_INOUT +#define DRM_IOC(dir, group, nr, size) _IOC(dir, group, nr, size) +#endif + +#define XFREE86_VERSION(major,minor,patch,snap) \ + ((major << 16) | (minor << 8) | patch) + +#ifndef CONFIG_XFREE86_VERSION +#define CONFIG_XFREE86_VERSION XFREE86_VERSION(4,1,0,0) +#endif + +#if CONFIG_XFREE86_VERSION < XFREE86_VERSION(4,1,0,0) +#define DRM_PROC_DEVICES "/proc/devices" +#define DRM_PROC_MISC "/proc/misc" +#define DRM_PROC_DRM "/proc/drm" +#define DRM_DEV_DRM "/dev/drm" +#define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) +#define DRM_DEV_UID 0 +#define DRM_DEV_GID 0 +#endif + +#if CONFIG_XFREE86_VERSION >= XFREE86_VERSION(4,1,0,0) +#define DRM_MAJOR 226 +#define DRM_MAX_MINOR 15 +#endif +#define DRM_NAME "drm" /**< Name in kernel, /dev, and /proc */ +#define DRM_MIN_ORDER 5 /**< At least 2^5 bytes = 32 bytes */ +#define DRM_MAX_ORDER 22 /**< Up to 2^22 bytes = 4MB */ +#define DRM_RAM_PERCENT 10 /**< How much system ram can we lock? */ + +#define _DRM_LOCK_HELD 0x80000000 /**< Hardware lock is held */ +#define _DRM_LOCK_CONT 0x40000000 /**< Hardware lock is contended */ +#define _DRM_LOCK_IS_HELD(lock) ((lock) & _DRM_LOCK_HELD) +#define _DRM_LOCK_IS_CONT(lock) ((lock) & _DRM_LOCK_CONT) +#define _DRM_LOCKING_CONTEXT(lock) ((lock) & ~(_DRM_LOCK_HELD|_DRM_LOCK_CONT)) + + +typedef unsigned long drm_handle_t; +typedef unsigned int drm_context_t; +typedef unsigned int drm_drawable_t; +typedef unsigned int drm_magic_t; + + +/** + * Cliprect. + * + * \warning: If you change this structure, make sure you change + * XF86DRIClipRectRec in the server as well + * + * \note KW: Actually it's illegal to change either for + * backwards-compatibility reasons. + */ +typedef struct drm_clip_rect { + unsigned short x1; + unsigned short y1; + unsigned short x2; + unsigned short y2; +} drm_clip_rect_t; + + +/** + * Texture region, + */ +typedef struct drm_tex_region { + unsigned char next; + unsigned char prev; + unsigned char in_use; + unsigned char padding; + unsigned int age; +} drm_tex_region_t; + + +/** + * \brief DRM_IOCTL_VERSION ioctl argument type. + * + * \sa drmGetVersion(). + */ +typedef struct drm_version { + int version_major; /**< Major version */ + int version_minor; /**< Minor version */ + int version_patchlevel;/**< Patch level */ + size_t name_len; /**< Length of name buffer */ + char *name; /**< Name of driver */ + size_t date_len; /**< Length of date buffer */ + char *date; /**< User-space buffer to hold date */ + size_t desc_len; /**< Length of desc buffer */ + char *desc; /**< User-space buffer to hold desc */ +} drm_version_t; + + +/** + * \brief DRM_IOCTL_GET_UNIQUE ioctl argument type. + * + * \sa drmGetBusid() and drmSetBusId(). + */ +typedef struct drm_unique { + size_t unique_len; /**< Length of unique */ + char *unique; /**< Unique name for driver instantiation */ +} drm_unique_t; + + +typedef struct drm_list { + int count; /**< Length of user-space structures */ + drm_version_t *version; +} drm_list_t; + + +typedef struct drm_block { + int unused; +} drm_block_t; + + +/** + * \brief DRM_IOCTL_CONTROL ioctl argument type. + * + * \sa drmCtlInstHandler() and drmCtlUninstHandler(). + */ +typedef struct drm_control { + enum { + DRM_ADD_COMMAND, + DRM_RM_COMMAND, + DRM_INST_HANDLER, + DRM_UNINST_HANDLER + } func; + int irq; +} drm_control_t; + + +/** + * \brief Type of memory to map. + */ +typedef enum drm_map_type { + _DRM_FRAME_BUFFER = 0, /**< WC (no caching), no core dump */ + _DRM_REGISTERS = 1, /**< no caching, no core dump */ + _DRM_SHM = 2, /**< shared, cached */ + _DRM_AGP = 3, /**< AGP/GART */ + _DRM_SCATTER_GATHER = 4 /**< Scatter/gather memory for PCI DMA */ +} drm_map_type_t; + + +/** + * \brief Memory mapping flags. + */ +typedef enum drm_map_flags { + _DRM_RESTRICTED = 0x01, /**< Cannot be mapped to user-virtual */ + _DRM_READ_ONLY = 0x02, + _DRM_LOCKED = 0x04, /**< shared, cached, locked */ + _DRM_KERNEL = 0x08, /**< kernel requires access */ + _DRM_WRITE_COMBINING = 0x10, /**< use write-combining if available */ + _DRM_CONTAINS_LOCK = 0x20, /**< SHM page that contains lock */ + _DRM_REMOVABLE = 0x40 /**< Removable mapping */ +} drm_map_flags_t; + + +typedef struct drm_ctx_priv_map { + unsigned int ctx_id; /**< Context requesting private mapping */ + void *handle; /**< Handle of map */ +} drm_ctx_priv_map_t; + + +/** + * \brief DRM_IOCTL_GET_MAP, DRM_IOCTL_ADD_MAP and DRM_IOCTL_RM_MAP ioctls + * argument type. + * + * \sa drmAddMap(). + */ +typedef struct drm_map { + unsigned long offset; /**< Requested physical address (0 for SAREA)*/ + unsigned long size; /**< Requested physical size (bytes) */ + drm_map_type_t type; /**< Type of memory to map */ + drm_map_flags_t flags; /**< Flags */ + void *handle; /**< User-space: "Handle" to pass to mmap() */ + /**< Kernel-space: kernel-virtual address */ + int mtrr; /**< MTRR slot used */ + /* Private data */ +} drm_map_t; + + +/** + * \brief DRM_IOCTL_GET_CLIENT ioctl argument type. + */ +typedef struct drm_client { + int idx; /**< Which client desired? */ + int auth; /**< Is client authenticated? */ + unsigned long pid; /**< Process ID */ + unsigned long uid; /**< User ID */ + unsigned long magic; /**< Magic */ + unsigned long iocs; /**< Ioctl count */ +} drm_client_t; + + +typedef enum { + _DRM_STAT_LOCK, + _DRM_STAT_OPENS, + _DRM_STAT_CLOSES, + _DRM_STAT_IOCTLS, + _DRM_STAT_LOCKS, + _DRM_STAT_UNLOCKS, + _DRM_STAT_VALUE, /**< Generic value */ + _DRM_STAT_BYTE, /**< Generic byte counter (1024bytes/K) */ + _DRM_STAT_COUNT, /**< Generic non-byte counter (1000/k) */ + + _DRM_STAT_IRQ, /**< IRQ */ + _DRM_STAT_PRIMARY, /**< Primary DMA bytes */ + _DRM_STAT_SECONDARY, /**< Secondary DMA bytes */ + _DRM_STAT_DMA, /**< DMA */ + _DRM_STAT_SPECIAL, /**< Special DMA (e.g., priority or polled) */ + _DRM_STAT_MISSED /**< Missed DMA opportunity */ + + /* Add to the *END* of the list */ +} drm_stat_type_t; + + +/** + * \brief DRM_IOCTL_GET_STATS ioctl argument type. + */ +typedef struct drm_stats { + unsigned long count; + struct { + unsigned long value; + drm_stat_type_t type; + } data[15]; +} drm_stats_t; + + +/** + * \brief Hardware locking flags. + */ +typedef enum drm_lock_flags { + _DRM_LOCK_READY = 0x01, /**< Wait until hardware is ready for DMA */ + _DRM_LOCK_QUIESCENT = 0x02, /**< Wait until hardware quiescent */ + _DRM_LOCK_FLUSH = 0x04, /**< Flush this context's DMA queue first */ + _DRM_LOCK_FLUSH_ALL = 0x08, /**< Flush all DMA queues first */ + /* These *HALT* flags aren't supported yet + -- they will be used to support the + full-screen DGA-like mode. */ + _DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */ + _DRM_HALT_CUR_QUEUES = 0x20 /**< Halt all current queues */ +} drm_lock_flags_t; + + +/** + * \brief DRM_IOCTL_LOCK, DRM_IOCTL_UNLOCK and DRM_IOCTL_FINISH ioctl argument type. + * + * \sa drmGetLock() and drmUnlock(). + */ +typedef struct drm_lock { + int context; + drm_lock_flags_t flags; +} drm_lock_t; + + +/** + * \brief DMA flags + * + * \warning + * These values \e must match xf86drm.h. + * + * \sa drm_dma. + */ +typedef enum drm_dma_flags { + /* Flags for DMA buffer dispatch */ + _DRM_DMA_BLOCK = 0x01, /**< + * Block until buffer dispatched. + * + * \note The buffer may not yet have + * been processed by the hardware -- + * getting a hardware lock with the + * hardware quiescent will ensure + * that the buffer has been + * processed. + */ + _DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */ + _DRM_DMA_PRIORITY = 0x04, /**< High priority dispatch */ + + /* Flags for DMA buffer request */ + _DRM_DMA_WAIT = 0x10, /**< Wait for free buffers */ + _DRM_DMA_SMALLER_OK = 0x20, /**< Smaller-than-requested buffers OK */ + _DRM_DMA_LARGER_OK = 0x40 /**< Larger-than-requested buffers OK */ +} drm_dma_flags_t; + + +/** + * \brief DRM_IOCTL_ADD_BUFS and DRM_IOCTL_MARK_BUFS ioctl argument type. + * + * \sa drmAddBufs(). + */ +typedef struct drm_buf_desc { + int count; /**< Number of buffers of this size */ + int size; /**< Size in bytes */ + int low_mark; /**< Low water mark */ + int high_mark; /**< High water mark */ + enum { + _DRM_PAGE_ALIGN = 0x01, /**< Align on page boundaries for DMA */ + _DRM_AGP_BUFFER = 0x02, /**< Buffer is in AGP space */ + _DRM_SG_BUFFER = 0x04 /**< Scatter/gather memory buffer */ + } flags; + unsigned long agp_start; /**< + * Start address of where the AGP buffers are + * in the AGP aperture + */ +} drm_buf_desc_t; + + +/** + * \brief DRM_IOCTL_INFO_BUFS ioctl argument type. + */ +typedef struct drm_buf_info { + int count; /**< Entries in list */ + drm_buf_desc_t *list; +} drm_buf_info_t; + + +/** + * \brief DRM_IOCTL_FREE_BUFS ioctl argument type. + */ +typedef struct drm_buf_free { + int count; + int *list; +} drm_buf_free_t; + + +/** + * \brief Buffer information + * + * \sa drm_buf_map. + */ +typedef struct drm_buf_pub { + int idx; /**< Index into the master buffer list */ + int total; /**< Buffer size */ + int used; /**< Amount of buffer in use (for DMA) */ + void *address; /**< Address of buffer */ +} drm_buf_pub_t; + + +/** + * \brief DRM_IOCTL_MAP_BUFS ioctl argument type. + */ +typedef struct drm_buf_map { + int count; /**< Length of the buffer list */ + void *virtual; /**< Mmap'd area in user-virtual */ + drm_buf_pub_t *list; /**< Buffer information */ +} drm_buf_map_t; + + +/** + * \brief DRM_IOCTL_DMA ioctl argument type. + * + * Indices here refer to the offset into the buffer list in drm_buf_get. + * + * \sa drmDMA(). + */ +typedef struct drm_dma { + int context; /**< Context handle */ + int send_count; /**< Number of buffers to send */ + int *send_indices; /**< List of handles to buffers */ + int *send_sizes; /**< Lengths of data to send */ + drm_dma_flags_t flags; /**< Flags */ + int request_count; /**< Number of buffers requested */ + int request_size; /**< Desired size for buffers */ + int *request_indices; /**< Buffer information */ + int *request_sizes; + int granted_count; /**< Number of buffers granted */ +} drm_dma_t; + + +typedef enum { + _DRM_CONTEXT_PRESERVED = 0x01, + _DRM_CONTEXT_2DONLY = 0x02 +} drm_ctx_flags_t; + + +/** + * \brief DRM_IOCTL_ADD_CTX ioctl argument type. + * + * \sa drmCreateContext() and drmDestroyContext(). + */ +typedef struct drm_ctx { + drm_context_t handle; + drm_ctx_flags_t flags; +} drm_ctx_t; + + +/** + * \brief DRM_IOCTL_RES_CTX ioctl argument type. + */ +typedef struct drm_ctx_res { + int count; + drm_ctx_t *contexts; +} drm_ctx_res_t; + + +/** + * \brief DRM_IOCTL_ADD_DRAW and DRM_IOCTL_RM_DRAW ioctl argument type. + */ +typedef struct drm_draw { + drm_drawable_t handle; +} drm_draw_t; + + +/** + * \brief DRM_IOCTL_GET_MAGIC and DRM_IOCTL_AUTH_MAGIC ioctl argument type. + */ +typedef struct drm_auth { + drm_magic_t magic; +} drm_auth_t; + + +/** + * \brief DRM_IOCTL_IRQ_BUSID ioctl argument type. + * + * \sa drmGetInterruptFromBusID(). + */ +typedef struct drm_irq_busid { + int irq; /**< IRQ number */ + int busnum; /**< bus number */ + int devnum; /**< device number */ + int funcnum; /**< function number */ +} drm_irq_busid_t; + + +typedef enum { + _DRM_VBLANK_ABSOLUTE = 0x0, /**< Wait for specific vblank sequence number */ + _DRM_VBLANK_RELATIVE = 0x1, /**< Wait for given number of vblanks */ + _DRM_VBLANK_SIGNAL = 0x8000 /**< Send signal instead of blocking */ +} drm_vblank_seq_type_t; + + +#define _DRM_VBLANK_FLAGS_MASK _DRM_VBLANK_SIGNAL + + +struct drm_wait_vblank_request { + drm_vblank_seq_type_t type; + unsigned int sequence; + unsigned long signal; +}; + + +struct drm_wait_vblank_reply { + drm_vblank_seq_type_t type; + unsigned int sequence; + long tval_sec; + long tval_usec; +}; + + +/** + * \brief DRM_IOCTL_WAIT_VBLANK ioctl argument type. + * + * \sa drmWaitVBlank(). + */ +typedef union drm_wait_vblank { + struct drm_wait_vblank_request request; + struct drm_wait_vblank_reply reply; +} drm_wait_vblank_t; + + +/** + * \brief DRM_IOCTL_AGP_ENABLE ioctl argument type. + * + * \sa drmAgpEnable(). + */ +typedef struct drm_agp_mode { + unsigned long mode; /**< AGP mode */ +} drm_agp_mode_t; + + +/** + * \brief DRM_IOCTL_AGP_ALLOC and DRM_IOCTL_AGP_FREE ioctls argument type. + * + * \sa drmAgpAlloc() and drmAgpFree(). + */ +typedef struct drm_agp_buffer { + unsigned long size; /**< In bytes -- will round to page boundary */ + unsigned long handle; /**< Used for binding / unbinding */ + unsigned long type; /**< Type of memory to allocate */ + unsigned long physical; /**< Physical used by i810 */ +} drm_agp_buffer_t; + + +/** + * \brief DRM_IOCTL_AGP_BIND and DRM_IOCTL_AGP_UNBIND ioctls argument type. + * + * \sa drmAgpBind() and drmAgpUnbind(). + */ +typedef struct drm_agp_binding { + unsigned long handle; /**< From drm_agp_buffer */ + unsigned long offset; /**< In bytes -- will round to page boundary */ +} drm_agp_binding_t; + + +/** + * \brief DRM_IOCTL_AGP_INFO ioctl argument type. + * + * \sa drmAgpVersionMajor(), drmAgpVersionMinor(), drmAgpGetMode(), + * drmAgpBase(), drmAgpSize(), drmAgpMemoryUsed(), drmAgpMemoryAvail(), + * drmAgpVendorId() and drmAgpDeviceId(). + */ +typedef struct drm_agp_info { + int agp_version_major; + int agp_version_minor; + unsigned long mode; + unsigned long aperture_base; /* physical address */ + unsigned long aperture_size; /* bytes */ + unsigned long memory_allowed; /* bytes */ + unsigned long memory_used; + + /* PCI information */ + unsigned short id_vendor; + unsigned short id_device; +} drm_agp_info_t; + + +/** + * \brief DRM_IOCTL_SG_ALLOC ioctl argument type. + */ +typedef struct drm_scatter_gather { + unsigned long size; /**< In bytes -- will round to page boundary */ + unsigned long handle; /**< Used for mapping / unmapping */ +} drm_scatter_gather_t; + + +#define DRM_IOCTL_BASE 'd' +#define DRM_IO(nr) _IO(DRM_IOCTL_BASE,nr) +#define DRM_IOR(nr,type) _IOR(DRM_IOCTL_BASE,nr,type) +#define DRM_IOW(nr,type) _IOW(DRM_IOCTL_BASE,nr,type) +#define DRM_IOWR(nr,type) _IOWR(DRM_IOCTL_BASE,nr,type) + +#define DRM_IOCTL_VERSION DRM_IOWR(0x00, drm_version_t) +#define DRM_IOCTL_GET_UNIQUE DRM_IOWR(0x01, drm_unique_t) +#define DRM_IOCTL_GET_MAGIC DRM_IOR( 0x02, drm_auth_t) +#define DRM_IOCTL_IRQ_BUSID DRM_IOWR(0x03, drm_irq_busid_t) +#define DRM_IOCTL_GET_MAP DRM_IOWR(0x04, drm_map_t) +#define DRM_IOCTL_GET_CLIENT DRM_IOWR(0x05, drm_client_t) +#define DRM_IOCTL_GET_STATS DRM_IOR( 0x06, drm_stats_t) + +#define DRM_IOCTL_SET_UNIQUE DRM_IOW( 0x10, drm_unique_t) +#define DRM_IOCTL_AUTH_MAGIC DRM_IOW( 0x11, drm_auth_t) +#define DRM_IOCTL_BLOCK DRM_IOWR(0x12, drm_block_t) +#define DRM_IOCTL_UNBLOCK DRM_IOWR(0x13, drm_block_t) +#define DRM_IOCTL_CONTROL DRM_IOW( 0x14, drm_control_t) +#define DRM_IOCTL_ADD_MAP DRM_IOWR(0x15, drm_map_t) +#define DRM_IOCTL_ADD_BUFS DRM_IOWR(0x16, drm_buf_desc_t) +#define DRM_IOCTL_MARK_BUFS DRM_IOW( 0x17, drm_buf_desc_t) +#define DRM_IOCTL_INFO_BUFS DRM_IOWR(0x18, drm_buf_info_t) +#define DRM_IOCTL_MAP_BUFS DRM_IOWR(0x19, drm_buf_map_t) +#define DRM_IOCTL_FREE_BUFS DRM_IOW( 0x1a, drm_buf_free_t) + +#define DRM_IOCTL_RM_MAP DRM_IOW( 0x1b, drm_map_t) + +#define DRM_IOCTL_SET_SAREA_CTX DRM_IOW( 0x1c, drm_ctx_priv_map_t) +#define DRM_IOCTL_GET_SAREA_CTX DRM_IOWR(0x1d, drm_ctx_priv_map_t) + +#define DRM_IOCTL_ADD_CTX DRM_IOWR(0x20, drm_ctx_t) +#define DRM_IOCTL_RM_CTX DRM_IOWR(0x21, drm_ctx_t) +#define DRM_IOCTL_MOD_CTX DRM_IOW( 0x22, drm_ctx_t) +#define DRM_IOCTL_GET_CTX DRM_IOWR(0x23, drm_ctx_t) +#define DRM_IOCTL_SWITCH_CTX DRM_IOW( 0x24, drm_ctx_t) +#define DRM_IOCTL_NEW_CTX DRM_IOW( 0x25, drm_ctx_t) +#define DRM_IOCTL_RES_CTX DRM_IOWR(0x26, drm_ctx_res_t) +#define DRM_IOCTL_ADD_DRAW DRM_IOWR(0x27, drm_draw_t) +#define DRM_IOCTL_RM_DRAW DRM_IOWR(0x28, drm_draw_t) +#define DRM_IOCTL_DMA DRM_IOWR(0x29, drm_dma_t) +#define DRM_IOCTL_LOCK DRM_IOW( 0x2a, drm_lock_t) +#define DRM_IOCTL_UNLOCK DRM_IOW( 0x2b, drm_lock_t) +#define DRM_IOCTL_FINISH DRM_IOW( 0x2c, drm_lock_t) + +#define DRM_IOCTL_AGP_ACQUIRE DRM_IO( 0x30) +#define DRM_IOCTL_AGP_RELEASE DRM_IO( 0x31) +#define DRM_IOCTL_AGP_ENABLE DRM_IOW( 0x32, drm_agp_mode_t) +#define DRM_IOCTL_AGP_INFO DRM_IOR( 0x33, drm_agp_info_t) +#define DRM_IOCTL_AGP_ALLOC DRM_IOWR(0x34, drm_agp_buffer_t) +#define DRM_IOCTL_AGP_FREE DRM_IOW( 0x35, drm_agp_buffer_t) +#define DRM_IOCTL_AGP_BIND DRM_IOW( 0x36, drm_agp_binding_t) +#define DRM_IOCTL_AGP_UNBIND DRM_IOW( 0x37, drm_agp_binding_t) + +#define DRM_IOCTL_SG_ALLOC DRM_IOW( 0x38, drm_scatter_gather_t) +#define DRM_IOCTL_SG_FREE DRM_IOW( 0x39, drm_scatter_gather_t) + +#define DRM_IOCTL_WAIT_VBLANK DRM_IOWR(0x3a, drm_wait_vblank_t) + +/** + * Device specific ioctls should only be in their respective headers + * The device specific ioctl range is from 0x40 to 0x79. + * + * \sa drmCommandNone(), drmCommandRead(), drmCommandWrite(), and + * drmCommandReadWrite(). + */ +#define DRM_COMMAND_BASE 0x40 + +#endif diff --git a/src/glx/mini/drmtest.c b/src/glx/mini/drmtest.c new file mode 100644 index 0000000000..f9cad3994e --- /dev/null +++ b/src/glx/mini/drmtest.c @@ -0,0 +1,140 @@ +#include <assert.h> +#include <unistd.h> +#include <stdio.h> +#include <string.h> +#include "xf86drm.h" + +char *pciBusID = "PCI:1:0:0"; +#define DRM_PAGE_SIZE 4096 +void *pSAREA; + + +static int client( void ) +{ + int fd, ret, err; + drmContext clientContext; + + fprintf(stderr, "Opening client drm\n"); + + fd = drmOpen(NULL,pciBusID); + if (fd < 0) { + fprintf(stderr, "failed to open DRM: %s\n", strerror(-fd)); + return 1; + } + + + fprintf(stderr, "Create server context\n"); + if ((err = drmCreateContext(fd, &clientContext)) != 0) { + fprintf(stderr, "%s: drmCreateContext failed %d\n", __FUNCTION__, err); + return 0; + } + + + fprintf(stderr, "DRM_LOCK( %d %p %d )\n", fd, pSAREA, clientContext); + DRM_LOCK(fd, pSAREA, clientContext, 0); + fprintf(stderr, "locked\n"); + DRM_UNLOCK(fd, pSAREA, clientContext); + fprintf(stderr, "DRM_UNLOCK finished\n"); + + + fprintf(stderr, "Closing client drm: %d\n", fd); + ret = drmClose(fd); + fprintf(stderr, "done %d\n", ret); + + return ret; +} + +int main( int argc, char *argv[] ) +{ + char *drmModuleName = "radeon"; + int drmFD; + int err; + int SAREASize; + drmHandle hSAREA; + drmContext serverContext; + + /* Note that drmOpen will try to load the kernel module, if needed. */ + drmFD = drmOpen(drmModuleName, NULL ); + if (drmFD < 0) { + /* failed to open DRM */ + fprintf(stderr, "[drm] drmOpen failed\n"); + return 0; + } + + + if ((err = drmSetBusid(drmFD, pciBusID)) < 0) { + drmClose(drmFD); + fprintf(stderr, "[drm] drmSetBusid failed (%d, %s), %s\n", + drmFD, pciBusID, strerror(-err)); + return 0; + } + + + SAREASize = DRM_PAGE_SIZE; + + if (drmAddMap( drmFD, + 0, + SAREASize, + DRM_SHM, + DRM_CONTAINS_LOCK, + &hSAREA) < 0) + { + drmClose(drmFD); + fprintf(stderr, "[drm] drmAddMap failed\n"); + return 0; + } + + fprintf(stderr, "[drm] added %d byte SAREA at 0x%08lx\n", + SAREASize, hSAREA); + + if (drmMap( drmFD, + hSAREA, + SAREASize, + (drmAddressPtr)(&pSAREA)) < 0) + { + drmClose(drmFD); + fprintf(stderr, "[drm] drmMap failed\n"); + return 0; + } + + memset(pSAREA, 0, SAREASize); + fprintf(stderr, "[drm] mapped SAREA 0x%08lx to %p, size %d\n", + hSAREA, pSAREA, SAREASize); + + fprintf(stderr, "Create server context\n"); + if ((err = drmCreateContext(drmFD, &serverContext)) != 0) { + fprintf(stderr, "%s: drmCreateContext failed %d\n", __FUNCTION__, err); + return 0; + } + + + fprintf(stderr, "DRM_LOCK( %d %p %d )\n", drmFD, pSAREA, serverContext); + DRM_LOCK(drmFD, pSAREA, serverContext, 0); + fprintf(stderr, "locked\n"); + DRM_UNLOCK(drmFD, pSAREA, serverContext); + fprintf(stderr, "DRM_UNLOCK finished\n"); + + + client(); + + + fprintf(stderr, "DRM_LOCK( %d %p %d )\n", drmFD, pSAREA, serverContext); + DRM_LOCK(drmFD, pSAREA, serverContext, 0); + fprintf(stderr, "locked\n"); + DRM_UNLOCK(drmFD, pSAREA, serverContext); + fprintf(stderr, "DRM_UNLOCK finished\n"); + + + drmUnmap(pSAREA, SAREASize); + fprintf(stderr, "[drm] unmapped SAREA 0x%08lx from %p, size %d\n", + hSAREA, pSAREA, SAREASize); + pSAREA = 0; + + fprintf(stderr, "%s: Closing DRM fd\n", __FUNCTION__); + (void)drmClose(drmFD); + + return 0; +} + + + diff --git a/src/glx/mini/example.miniglx.conf b/src/glx/mini/example.miniglx.conf new file mode 100644 index 0000000000..06adbffcf3 --- /dev/null +++ b/src/glx/mini/example.miniglx.conf @@ -0,0 +1,26 @@ +# Example miniglx configuration file (/etc/miniglx.conf) +# + +# Framebuffer device to open: Might need to change this on dual-head +# systems. +fbdevDevice=/dev/fb0 + +# Which driver? +# radeon_dri.so -- HW accelerated radeon driver +# fb_dri.so -- Software rasterizer +clientDriverName=radeon_dri.so + +# The pci bus id of the video card. Find this with scanpci, lspci or +# look in /proc/pci. +pciBusID=PCI:1:0:0 + +# Virtual screen dimensions. Can reduce this to save videocard memory +# at the expense of maximum window size available. +virtualWidth=1280 +virtualHeight=1024 + +# Screen depth. Only 16 & 32bpp supported. +bpp=32 + +# Rotated monitor? -- NOTE: only works with subsetted radeon driver! +rotateMode=0 diff --git a/src/glx/mini/miniglx.c b/src/glx/mini/miniglx.c new file mode 100644 index 0000000000..25c7b96362 --- /dev/null +++ b/src/glx/mini/miniglx.c @@ -0,0 +1,1975 @@ +/** + * \file miniglx.c + * \brief Mini GLX interface functions. + * \author Brian Paul + * + * The Mini GLX interface is a subset of the GLX interface, plus a + * minimal set of Xlib functions. + */ + +/* + * Mesa 3-D graphics library + * Version: 5.0 + * + * Copyright (C) 1999-2003 Brian Paul 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 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 + * BRIAN PAUL 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. + */ + +/* $Id: miniglx.c,v 1.1 2003/08/22 20:11:43 brianp Exp $ */ + +/** + * \mainpage Mini GLX + * + * \section miniglxIntro Introduction + * + * The Mini GLX interface facilitates OpenGL rendering on embedded devices. The + * interface is a subset of the GLX interface, plus a minimal set of Xlib-like + * functions. + * + * Programs written to the Mini GLX specification should run unchanged + * on systems with the X Window System and the GLX extension (after + * recompilation). The intention is to allow flexibility for + * prototyping and testing. + * + * The files in the src/miniglx/ directory are compiled to build the + * libGL.so library. This is the library which applications link with. + * libGL.so in turn, loads the hardware-specific device driver. + * + * + * \section miniglxDoxygen About Doxygen + * + * For a list of all files, select <b>File List</b>. Choose a file from + * the list for a list of all functions in the file. + * + * For a list of all functions, types, constants, etc. + * select <b>File Members</b>. + * + * + * \section miniglxReferences References + * + * - <A HREF="file:../../docs/MiniGLX.html">Mini GLX Specification</A>, + * Tungsten Graphics, Inc. + * - OpenGL Graphics with the X Window System, Silicon Graphics, Inc., + * ftp://ftp.sgi.com/opengl/doc/opengl1.2/glx1.3.ps + * - Xlib - C Language X Interface, X Consortium Standard, X Version 11, + * Release 6.4, ftp://ftp.x.org/pub/R6.4/xc/doc/hardcopy/X11/xlib.PS.gz + * - XFree86 Man pages, The XFree86 Project, Inc., + * http://www.xfree86.org/current/manindex3.html + * + */ + +/** + * \page datatypes Notes on the XVisualInfo, Visual, and __GLXvisualConfig data types + * + * -# X (unfortunately) has two (or three) data types which + * describe visuals. Ideally, there would just be one. + * -# We need the #__GLXvisualConfig type to augment #XVisualInfo and #Visual + * because we need to describe the GLX-specific attributes of visuals. + * -# In this interface there is a one-to-one-to-one correspondence between + * the three types and they're all interconnected. + * -# The #XVisualInfo type has a pointer to a #Visual. The #Visual structure + * (aka MiniGLXVisualRec) has a pointer to the #__GLXvisualConfig. The + * #Visual structure also has a pointer pointing back to the #XVisualInfo. + * -# The #XVisualInfo structure is the only one who's contents are public. + * -# The glXChooseVisual() and XGetVisualInfo() are the only functions that + * return #XVisualInfo structures. They can be freed with XFree(), though + * there is a small memory leak. + */ + + +#include <assert.h> +#include <errno.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <dlfcn.h> +#include <fcntl.h> +#include <unistd.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/types.h> +#include <linux/kd.h> +#include <linux/vt.h> + +#include "miniglxP.h" +#include "dri.h" + +#include "glapi.h" +#include "xf86drm.h" + + +/** + * \brief Current GLX context. + * + * \sa glXGetCurrentContext(). + */ +static GLXContext CurrentContext = NULL; + + + +static Display *SignalDisplay = 0; + +static void SwitchVT(int sig) +{ + fprintf(stderr, "SwitchVT %d dpy %p\n", sig, SignalDisplay); + + if (SignalDisplay) { + SignalDisplay->vtSignalFlag = 1; + switch( sig ) + { + case SIGUSR1: /* vt has been released */ + SignalDisplay->haveVT = 0; + break; + case SIGUSR2: /* vt has been acquired */ + SignalDisplay->haveVT = 1; + break; + } + } +} + +/**********************************************************************/ +/** \name Framebuffer device functions */ +/**********************************************************************/ +/*@{*/ + +/** + * \brief Do the first part of setting up the framebuffer device. + * + * \param dpy the display handle. + * \param use_vt use a VT for display or not + * + * \return GL_TRUE on success, or GL_FALSE on failure. + * + * \sa This is called during XOpenDisplay(). + * + * \internal + * Gets the VT number, opens the respective console TTY device. Saves its state + * to restore when exiting and goes into graphics mode. + * + * Opens the framebuffer device and make a copy of the original variable screen + * information and gets the fixed screen information. Maps the framebuffer and + * MMIO region into the process address space. + */ +static GLboolean +OpenFBDev( Display *dpy, int use_vt ) +{ + char ttystr[1000]; + int fd, vtnumber, ttyfd; + + assert(dpy); + + if (geteuid()) { + fprintf(stderr, "error: you need to be root\n"); + return GL_FALSE; + } + + if (use_vt) { + + /* open /dev/tty0 and get the VT number */ + if ((fd = open("/dev/tty0", O_WRONLY, 0)) < 0) { + fprintf(stderr, "error opening /dev/tty0\n"); + return GL_FALSE; + } + if (ioctl(fd, VT_OPENQRY, &vtnumber) < 0 || vtnumber < 0) { + fprintf(stderr, "error: couldn't get a free vt\n"); + return GL_FALSE; + } + + fprintf(stderr, "*** got vt nr: %d\n", vtnumber); + close(fd); + + /* open the console tty */ + sprintf(ttystr, "/dev/tty%d", vtnumber); /* /dev/tty1-64 */ + dpy->ConsoleFD = open(ttystr, O_RDWR | O_NDELAY, 0); + if (dpy->ConsoleFD < 0) { + fprintf(stderr, "error couldn't open console fd\n"); + return GL_FALSE; + } + + /* save current vt number */ + { + struct vt_stat vts; + if (ioctl(dpy->ConsoleFD, VT_GETSTATE, &vts) == 0) + dpy->OriginalVT = vts.v_active; + } + + /* disconnect from controlling tty */ + ttyfd = open("/dev/tty", O_RDWR); + if (ttyfd >= 0) { + ioctl(ttyfd, TIOCNOTTY, 0); + close(ttyfd); + } + + /* some magic to restore the vt when we exit */ + { + struct vt_mode vt; + struct sigaction sig_tty; + + /* Set-up tty signal handler to catch the signal we request below */ + SignalDisplay = dpy; + memset( &sig_tty, 0, sizeof( sig_tty ) ); + sig_tty.sa_handler = SwitchVT; + sigemptyset( &sig_tty.sa_mask ); + if( sigaction( SIGUSR1, &sig_tty, &dpy->OrigSigUsr1 ) || + sigaction( SIGUSR2, &sig_tty, &dpy->OrigSigUsr2 ) ) + { + fprintf(stderr, "error: can't set up signal handler (%s)", + strerror(errno) ); + return GL_FALSE; + } + + + + vt.mode = VT_PROCESS; + vt.waitv = 0; + vt.relsig = SIGUSR1; + vt.acqsig = SIGUSR2; + if (ioctl(dpy->ConsoleFD, VT_SETMODE, &vt) < 0) { + fprintf(stderr, "error: ioctl(VT_SETMODE) failed: %s\n", + strerror(errno)); + return GL_FALSE; + } + + + if (ioctl(dpy->ConsoleFD, VT_ACTIVATE, vtnumber) != 0) + printf("ioctl VT_ACTIVATE: %s\n", strerror(errno)); + if (ioctl(dpy->ConsoleFD, VT_WAITACTIVE, vtnumber) != 0) + printf("ioctl VT_WAITACTIVE: %s\n", strerror(errno)); + + if (ioctl(dpy->ConsoleFD, VT_GETMODE, &vt) < 0) { + fprintf(stderr, "error: ioctl VT_GETMODE: %s\n", strerror(errno)); + return GL_FALSE; + } + + + + } + + /* go into graphics mode */ + if (ioctl(dpy->ConsoleFD, KDSETMODE, KD_GRAPHICS) < 0) { + fprintf(stderr, "error: ioctl(KDSETMODE, KD_GRAPHICS) failed: %s\n", + strerror(errno)); + return GL_FALSE; + } + } + + /* open the framebuffer device */ + dpy->FrameBufferFD = open(dpy->fbdevDevice, O_RDWR); + if (dpy->FrameBufferFD < 0) { + fprintf(stderr, "Error opening /dev/fb0: %s\n", strerror(errno)); + return GL_FALSE; + } + + /* get the original variable screen info */ + if (ioctl(dpy->FrameBufferFD, FBIOGET_VSCREENINFO, &dpy->OrigVarInfo)) { + fprintf(stderr, "error: ioctl(FBIOGET_VSCREENINFO) failed: %s\n", + strerror(errno)); + return GL_FALSE; + } + + /* make copy */ + dpy->VarInfo = dpy->OrigVarInfo; /* structure copy */ + + /* Turn off hw accels (otherwise mmap of mmio region will be + * refused) + */ + dpy->VarInfo.accel_flags = 0; + if (ioctl(dpy->FrameBufferFD, FBIOPUT_VSCREENINFO, &dpy->VarInfo)) { + fprintf(stderr, "error: ioctl(FBIOPUT_VSCREENINFO) failed: %s\n", + strerror(errno)); + return GL_FALSE; + } + + + + /* Get the fixed screen info */ + if (ioctl(dpy->FrameBufferFD, FBIOGET_FSCREENINFO, &dpy->FixedInfo)) { + fprintf(stderr, "error: ioctl(FBIOGET_FSCREENINFO) failed: %s\n", + strerror(errno)); + return GL_FALSE; + } + + + + /* mmap the framebuffer into our address space */ + dpy->driverContext.FBStart = dpy->FixedInfo.smem_start; + dpy->driverContext.FBSize = dpy->FixedInfo.smem_len; + dpy->driverContext.shared.fbSize = dpy->FixedInfo.smem_len; + dpy->driverContext.FBAddress = (caddr_t) mmap(0, /* start */ + dpy->driverContext.shared.fbSize, /* bytes */ + PROT_READ | PROT_WRITE, /* prot */ + MAP_SHARED, /* flags */ + dpy->FrameBufferFD, /* fd */ + 0 /* offset */); + if (dpy->driverContext.FBAddress == (caddr_t) - 1) { + fprintf(stderr, "error: unable to mmap framebuffer: %s\n", + strerror(errno)); + return GL_FALSE; + } + + /* mmap the MMIO region into our address space */ + dpy->driverContext.MMIOStart = dpy->FixedInfo.mmio_start; + dpy->driverContext.MMIOSize = dpy->FixedInfo.mmio_len; + dpy->driverContext.MMIOAddress = (caddr_t) mmap(0, /* start */ + dpy->driverContext.MMIOSize, /* bytes */ + PROT_READ | PROT_WRITE, /* prot */ + MAP_SHARED, /* flags */ + dpy->FrameBufferFD, /* fd */ + dpy->FixedInfo.smem_len /* offset */); + if (dpy->driverContext.MMIOAddress == (caddr_t) - 1) { + fprintf(stderr, "error: unable to mmap mmio region: %s\n", + strerror(errno)); + return GL_FALSE; + } + + fprintf(stderr, "got MMIOAddress %p offset %d\n", + dpy->driverContext.MMIOAddress, + dpy->FixedInfo.smem_len); + + return GL_TRUE; +} + + + + +/** + * \brief Setup up the desired framebuffer device mode. + * + * \param dpy the display handle. + * + * \return GL_TRUE on success, or GL_FALSE on failure. + * + * \sa This is called during __miniglx_StartServer(). + * + * \internal + * + * Bumps the size of the window the the next supported mode. Sets the + * variable screen information according to the desired mode and asks + * the driver to validate the mode. Certifies that a DirectColor or + * TrueColor visual is used from the updated fixed screen information. + * In the case of DirectColor visuals, sets up an 'identity' colormap to + * mimic a TrueColor visual. + * + * Calls the driver hooks 'ValidateMode' and 'PostValidateMode' to + * allow the driver to make modifications to the chosen mode according + * to hardware constraints, or to save and restore videocard registers + * that may be clobbered by the fbdev driver. + * + * \todo Timings are hard-coded in the source for a set of supported modes. + */ +static GLboolean +SetupFBDev( Display *dpy ) +{ + int width, height; + + assert(dpy); + + width = dpy->driverContext.shared.virtualWidth; + height = dpy->driverContext.shared.virtualHeight; + + /* Bump size up to next supported mode. + */ + if (width <= 800 && height <= 600) { + width = 800; height = 600; + } + else if (width <= 1024 && height <= 768) { + width = 1024; height = 768; + } + else if (width <= 768 && height <= 1024) { + width = 768; height = 1024; + } + else if (width <= 1280 && height <= 1024) { + width = 1280; height = 1024; + } + + + dpy->driverContext.shared.virtualHeight = height; + dpy->driverContext.shared.virtualWidth = width; + dpy->driverContext.shared.fbStride = width * (dpy->driverContext.bpp / 8); + + /* set the depth, resolution, etc */ + dpy->VarInfo = dpy->OrigVarInfo; + dpy->VarInfo.bits_per_pixel = dpy->driverContext.bpp; + dpy->VarInfo.xres_virtual = dpy->driverContext.shared.virtualWidth; + dpy->VarInfo.yres_virtual = dpy->driverContext.shared.virtualHeight; + dpy->VarInfo.xres = width; + dpy->VarInfo.yres = height; + dpy->VarInfo.xoffset = 0; + dpy->VarInfo.yoffset = 0; + dpy->VarInfo.nonstd = 0; + dpy->VarInfo.vmode &= ~FB_VMODE_YWRAP; /* turn off scrolling */ + + if (dpy->VarInfo.bits_per_pixel == 32) { + dpy->VarInfo.red.offset = 16; + dpy->VarInfo.green.offset = 8; + dpy->VarInfo.blue.offset = 0; + dpy->VarInfo.transp.offset = 24; + dpy->VarInfo.red.length = 8; + dpy->VarInfo.green.length = 8; + dpy->VarInfo.blue.length = 8; + dpy->VarInfo.transp.length = 8; + } + else if (dpy->VarInfo.bits_per_pixel == 16) { + dpy->VarInfo.red.offset = 11; + dpy->VarInfo.green.offset = 5; + dpy->VarInfo.blue.offset = 0; + dpy->VarInfo.red.length = 5; + dpy->VarInfo.green.length = 6; + dpy->VarInfo.blue.length = 5; + dpy->VarInfo.transp.offset = 0; + dpy->VarInfo.transp.length = 0; + } + else { + fprintf(stderr, "Only 32bpp and 16bpp modes supported at the moment\n"); + return 0; + } + + if (!dpy->driver->validateMode( &dpy->driverContext )) { + fprintf(stderr, "Driver validateMode() failed\n"); + return 0; + } + + if (dpy->VarInfo.xres == 1280 && + dpy->VarInfo.yres == 1024) { + /* timing values taken from /etc/fb.modes (1280x1024 @ 75Hz) */ + dpy->VarInfo.pixclock = 7408; + dpy->VarInfo.left_margin = 248; + dpy->VarInfo.right_margin = 16; + dpy->VarInfo.upper_margin = 38; + dpy->VarInfo.lower_margin = 1; + dpy->VarInfo.hsync_len = 144; + dpy->VarInfo.vsync_len = 3; + } + else if (dpy->VarInfo.xres == 1024 && + dpy->VarInfo.yres == 768) { + /* timing values taken from /etc/fb.modes (1024x768 @ 75Hz) */ + dpy->VarInfo.pixclock = 12699; + dpy->VarInfo.left_margin = 176; + dpy->VarInfo.right_margin = 16; + dpy->VarInfo.upper_margin = 28; + dpy->VarInfo.lower_margin = 1; + dpy->VarInfo.hsync_len = 96; + dpy->VarInfo.vsync_len = 3; + } + else if (dpy->VarInfo.xres == 800 && + dpy->VarInfo.yres == 600) { + /* timing values taken from /etc/fb.modes (800x600 @ 75Hz) */ + dpy->VarInfo.pixclock = 20203; + dpy->VarInfo.left_margin = 160; + dpy->VarInfo.right_margin = 16; + dpy->VarInfo.upper_margin = 21; + dpy->VarInfo.lower_margin = 1; + dpy->VarInfo.hsync_len = 80; + dpy->VarInfo.vsync_len = 3; + } + else if (dpy->VarInfo.xres == 768 && + dpy->VarInfo.yres == 1024) { + /* timing values for 768x1024 @ 75Hz */ + dpy->VarInfo.pixclock = 11993; + dpy->VarInfo.left_margin = 136; + dpy->VarInfo.right_margin = 32; + dpy->VarInfo.upper_margin = 41; + dpy->VarInfo.lower_margin = 1; + dpy->VarInfo.hsync_len = 80; + dpy->VarInfo.vsync_len = 3; + } + else { + /* XXX need timings for other screen sizes */ + fprintf(stderr, "XXXX screen size %d x %d not supported at this time!\n", + dpy->VarInfo.xres, dpy->VarInfo.yres); + return GL_FALSE; + } + + fprintf(stderr, "[miniglx] Setting mode: visible %dx%d virtual %dx%dx%d\n", + dpy->VarInfo.xres, dpy->VarInfo.yres, + dpy->VarInfo.xres_virtual, dpy->VarInfo.yres_virtual, + dpy->VarInfo.bits_per_pixel); + + /* set variable screen info */ + if (ioctl(dpy->FrameBufferFD, FBIOPUT_VSCREENINFO, &dpy->VarInfo)) { + fprintf(stderr, "error: ioctl(FBIOPUT_VSCREENINFO) failed: %s\n", + strerror(errno)); + return GL_FALSE; + } + + /* get the variable screen info, in case it has been modified */ + if (ioctl(dpy->FrameBufferFD, FBIOGET_VSCREENINFO, &dpy->VarInfo)) { + fprintf(stderr, "error: ioctl(FBIOGET_VSCREENINFO) failed: %s\n", + strerror(errno)); + return GL_FALSE; + } + + + fprintf(stderr, "[miniglx] Readback mode: visible %dx%d virtual %dx%dx%d\n", + dpy->VarInfo.xres, dpy->VarInfo.yres, + dpy->VarInfo.xres_virtual, dpy->VarInfo.yres_virtual, + dpy->VarInfo.bits_per_pixel); + + /* Get the fixed screen info */ + if (ioctl(dpy->FrameBufferFD, FBIOGET_FSCREENINFO, &dpy->FixedInfo)) { + fprintf(stderr, "error: ioctl(FBIOGET_FSCREENINFO) failed: %s\n", + strerror(errno)); + return GL_FALSE; + } + + if (dpy->FixedInfo.visual != FB_VISUAL_TRUECOLOR && + dpy->FixedInfo.visual != FB_VISUAL_DIRECTCOLOR) { + fprintf(stderr, "non-TRUECOLOR visuals not supported.\n"); + return GL_FALSE; + } + + if (dpy->FixedInfo.visual == FB_VISUAL_DIRECTCOLOR) { + struct fb_cmap cmap; + unsigned short red[256], green[256], blue[256]; + int rcols = 1 << dpy->VarInfo.red.length; + int gcols = 1 << dpy->VarInfo.green.length; + int bcols = 1 << dpy->VarInfo.blue.length; + int i; + + cmap.start = 0; + cmap.len = gcols; + cmap.red = red; + cmap.green = green; + cmap.blue = blue; + cmap.transp = NULL; + + for (i = 0; i < rcols ; i++) + red[i] = (65536/(rcols-1)) * i; + + for (i = 0; i < gcols ; i++) + green[i] = (65536/(gcols-1)) * i; + + for (i = 0; i < bcols ; i++) + blue[i] = (65536/(bcols-1)) * i; + + if (ioctl(dpy->FrameBufferFD, FBIOPUTCMAP, (void *) &cmap) < 0) { + fprintf(stderr, "ioctl(FBIOPUTCMAP) failed [%d]\n", i); + exit(1); + } + } + + /* May need to restore regs fbdev has clobbered: + */ + if (!dpy->driver->postValidateMode( &dpy->driverContext )) { + fprintf(stderr, "Driver postValidateMode() failed\n"); + return 0; + } + + return GL_TRUE; +} + + +/** + * \brief Restore the framebuffer device to state it was in before we started + * + * Undoes the work done by SetupFBDev(). + * + * \param dpy the display handle. + * + * \return GL_TRUE on success, or GL_FALSE on failure. + * + * \sa Called from XDestroyWindow(). + * + * \internal + * Restores the original variable screen info. + */ +static GLboolean +RestoreFBDev( Display *dpy ) +{ + /* restore original variable screen info */ + if (ioctl(dpy->FrameBufferFD, FBIOPUT_VSCREENINFO, &dpy->OrigVarInfo)) { + fprintf(stderr, "ioctl(FBIOPUT_VSCREENINFO failed): %s\n", + strerror(errno)); + return GL_FALSE; + } + dpy->VarInfo = dpy->OrigVarInfo; + + return GL_TRUE; +} + + +/** + * \brief Close the framebuffer device. + * + * \param dpy the display handle. + * + * \sa Called from XCloseDisplay(). + * + * \internal + * Unmaps the framebuffer and MMIO region. Restores the text mode and the + * original virtual terminal. Closes the console and framebuffer devices. + */ +static void +CloseFBDev( Display *dpy ) +{ + struct vt_mode VT; + + munmap(dpy->driverContext.FBAddress, dpy->driverContext.FBSize); + munmap(dpy->driverContext.MMIOAddress, dpy->driverContext.MMIOSize); + + if (dpy->ConsoleFD) { + /* restore text mode */ + ioctl(dpy->ConsoleFD, KDSETMODE, KD_TEXT); + + /* set vt */ + if (ioctl(dpy->ConsoleFD, VT_GETMODE, &VT) != -1) { + VT.mode = VT_AUTO; + ioctl(dpy->ConsoleFD, VT_SETMODE, &VT); + } + + /* restore original vt */ + if (dpy->OriginalVT >= 0) { + ioctl(dpy->ConsoleFD, VT_ACTIVATE, dpy->OriginalVT); + dpy->OriginalVT = -1; + } + + close(dpy->ConsoleFD); + } + close(dpy->FrameBufferFD); +} + +/*@}*/ + + +/**********************************************************************/ +/** \name Misc functions needed for DRI drivers */ +/**********************************************************************/ +/*@{*/ + +/** + * \brief Find the DRI screen dependent methods associated with the display. + * + * \param dpy a display handle, as returned by XOpenDisplay(). + * \param scrn the screen number. Not referenced. + * + * \returns a pointer to a __DRIscreenRec structure. + * + * \internal + * Returns the MiniGLXDisplayRec::driScreen attribute. + */ +__DRIscreen * +__glXFindDRIScreen(Display *dpy, int scrn) +{ + (void) scrn; + return dpy->driScreen; +} + +/** + * \brief Validate a drawable. + * + * \param dpy a display handle, as returned by XOpenDisplay(). + * \param draw drawable to validate. + * + * \internal + * Since Mini GLX only supports one window, compares the specified drawable with + * the MiniGLXDisplayRec::TheWindow attribute. + */ +Bool +__glXWindowExists(Display *dpy, GLXDrawable draw) +{ + if (dpy->TheWindow == draw) + return True; + else + return False; +} + +/** + * \brief Get current thread ID. + * + * \return thread ID. + * + * \internal + * Always returns 0. + */ +/*unsigned long +_glthread_GetID(void) +{ + return 0; +}*/ + +/*@}*/ + + +/** + * \brief Scan Linux /prog/bus/pci/devices file to determine hardware + * chipset based on supplied bus ID. + * + * \return probed chipset (non-zero) on success, zero otherwise. + * + * \internal + */ +static int get_chipset_from_busid( Display *dpy ) +{ + char buf[0x200]; + FILE *file; + const char *fname = "/proc/bus/pci/devices"; + int retval = 0; + + if (!(file = fopen(fname,"r"))) { + fprintf(stderr, "couldn't open %s: %s\n", fname, strerror(errno)); + return 0; + } + + while (fgets(buf, sizeof(buf)-1, file)) { + unsigned int nr, bus, dev, fn, vendor, device, encode; + nr = sscanf(buf, "%04x\t%04x%04x", &encode, + &vendor, &device); + + bus = encode >> 16; + dev = (encode & 0xFF) >> 3; + fn = encode & 0x7; + + if (nr != 3) + break; + + if (bus == dpy->driverContext.pciBus && + dev == dpy->driverContext.pciDevice && + fn == dpy->driverContext.pciFunc) { + retval = device; + break; + } + } + + fclose(file); + + if (retval) + fprintf(stderr, "[miniglx] probed chipset 0x%x\n", retval); + else + fprintf(stderr, "[miniglx] failed to probe chipset\n"); + + return retval; +} + + +/** + * \brief Read settings from a configuration file. + * + * The configuration file is usually "/etc/miniglx.conf", but can be overridden + * with the MINIGLX_CONF environment variable. + * + * The format consists in \code option = value \endcode lines. The option names + * corresponds to the fields in MiniGLXDisplayRec. + * + * \param dpy the display handle as. + * + * \return non-zero on success, zero otherwise. + * + * \internal + * Sets some defaults. Opens and parses the the Mini GLX configuration file and + * fills in the MiniGLXDisplayRec field that corresponds for each option. + */ +static int __read_config_file( Display *dpy ) +{ + FILE *file; + const char *fname; + + /* Fallback/defaults + */ + dpy->fbdevDevice = "/dev/fb0"; + dpy->clientDriverName = "fb_dri.so"; + dpy->driverContext.pciBus = 0; + dpy->driverContext.pciDevice = 0; + dpy->driverContext.pciFunc = 0; + dpy->driverContext.chipset = 0; + dpy->driverContext.pciBusID = 0; + dpy->driverContext.shared.virtualWidth = 1280; + dpy->driverContext.shared.virtualHeight = 1024; + dpy->driverContext.bpp = 32; + dpy->driverContext.cpp = 4; + dpy->rotateMode = 0; + + fname = getenv("MINIGLX_CONF"); + if (!fname) fname = "/etc/miniglx.conf"; + + file = fopen(fname, "r"); + if (!file) { + fprintf(stderr, "couldn't open config file %s: %s\n", fname, strerror(errno)); + return 0; + } + + + while (!feof(file)) { + char buf[81], *opt = buf, *val, *tmp1, *tmp2; + fgets(buf, sizeof(buf), file); + + /* Parse 'opt = val' -- must be easier ways to do this. + */ + while (isspace(*opt)) opt++; + val = opt; + if (*val == '#') continue; /* comment */ + while (!isspace(*val) && *val != '=' && *val) val++; + tmp1 = val; + while (isspace(*val)) val++; + if (*val != '=') continue; + *tmp1 = 0; + val++; + while (isspace(*val)) val++; + tmp2 = val; + while (!isspace(*tmp2) && *tmp2 != '\n' && *tmp2) tmp2++; + *tmp2 = 0; + + + if (strcmp(opt, "fbdevDevice") == 0) + dpy->fbdevDevice = strdup(val); + else if (strcmp(opt, "clientDriverName") == 0) + dpy->clientDriverName = strdup(val); + else if (strcmp(opt, "rotateMode") == 0) + dpy->rotateMode = atoi(val) ? 1 : 0; + else if (strcmp(opt, "pciBusID") == 0) { + if (sscanf(val, "PCI:%d:%d:%d", + &dpy->driverContext.pciBus, + &dpy->driverContext.pciDevice, + &dpy->driverContext.pciFunc) != 3) { + fprintf(stderr, "malformed bus id: %s\n", val); + continue; + } + dpy->driverContext.pciBusID = strdup(val); + } + else if (strcmp(opt, "chipset") == 0) { + if (sscanf(val, "0x%x", &dpy->driverContext.chipset) != 1) + fprintf(stderr, "malformed chipset: %s\n", opt); + } + else if (strcmp(opt, "virtualWidth") == 0) { + if (sscanf(val, "%d", &dpy->driverContext.shared.virtualWidth) != 1) + fprintf(stderr, "malformed virtualWidth: %s\n", opt); + } + else if (strcmp(opt, "virtualHeight") == 0) { + if (sscanf(val, "%d", &dpy->driverContext.shared.virtualHeight) != 1) + fprintf(stderr, "malformed virutalHeight: %s\n", opt); + } + else if (strcmp(opt, "bpp") == 0) { + if (sscanf(val, "%d", &dpy->driverContext.bpp) != 1) + fprintf(stderr, "malformed bpp: %s\n", opt); + dpy->driverContext.cpp = dpy->driverContext.bpp / 8; + } + } + + fclose(file); + + if (dpy->driverContext.chipset == 0 && dpy->driverContext.pciBusID != 0) + dpy->driverContext.chipset = get_chipset_from_busid( dpy ); + + return 1; +} + +static int InitDriver( Display *dpy ) +{ + /* + * Begin DRI setup. + * We're kind of combining the per-display and per-screen information + * which was kept separate in XFree86/DRI's libGL. + */ + dpy->dlHandle = dlopen(dpy->clientDriverName, RTLD_NOW | RTLD_GLOBAL); + if (!dpy->dlHandle) { + fprintf(stderr, "Unable to open %s: %s\n", dpy->clientDriverName, + dlerror()); + return GL_FALSE; + } + + /* Pull in Mini GLX specific hooks: + */ + dpy->driver = (struct DRIDriverRec *) dlsym(dpy->dlHandle, + "__driDriver"); + if (!dpy->driver) { + fprintf(stderr, "Couldn't find __driDriver in %s\n", + dpy->clientDriverName); + dlclose(dpy->dlHandle); + return GL_FALSE; + } + + /* Pull in standard DRI client-side driver hooks: + */ + dpy->createScreen = (driCreateScreenFunc*) dlsym(dpy->dlHandle, + "__driCreateScreen"); + if (!dpy->createScreen) { + fprintf(stderr, "Couldn't find __driCreateScreen in %s\n", + dpy->clientDriverName); + dlclose(dpy->dlHandle); + return GL_FALSE; + } + + return GL_TRUE; +} + + +/**********************************************************************/ +/** \name Public API functions (Xlib and GLX) */ +/**********************************************************************/ +/*@{*/ + + +/** + * \brief Initialize the graphics system. + * + * \param display_name currently ignored. It is recommended to pass it as NULL. + * \return a pointer to a #Display if the function is able to initialize + * the graphics system, NULL otherwise. + * + * Allocates a MiniGLXDisplayRec structure and fills in with information from a + * configuration file. + * + * Calls OpenFBDev() to open the framebuffer device and calls + * DRIDriverRec::initFBDev to do the client-side initialization on it. + * + * Loads the DRI driver and pulls in Mini GLX specific hooks into a + * DRIDriverRec structure, and the standard DRI \e __driCreateScreen hook. + * Asks the driver for a list of supported visuals. Performs the per-screen + * client-side initialization. Also setups the callbacks in the screen private + * information. + * + * Does the framebuffer device setup. Calls __miniglx_open_connections() to + * serve clients. + */ +Display * +__miniglx_StartServer( const char *display_name ) +{ + Display *dpy; + int use_vt = 0; + + dpy = (Display *)calloc(1, sizeof(Display)); + if (!dpy) + return NULL; + + dpy->IsClient = False; + + if (!__read_config_file( dpy )) { + fprintf(stderr, "Couldn't get configuration details\n"); + free(dpy); + return NULL; + } + + /* Open the fbdev device + */ + if (!OpenFBDev(dpy, use_vt)) { + fprintf(stderr, "OpenFBDev failed\n"); + free(dpy); + return NULL; + } + + if (!InitDriver(dpy)) { + fprintf(stderr, "InitDriver failed\n"); + free(dpy); + return NULL; + } + + /* Ask the driver for a list of supported configs: + */ + dpy->driver->initContextModes( &dpy->driverContext, &dpy->numModes, &dpy->modes ); + + /* Perform the initialization normally done in the X server + */ + if (!dpy->driver->initFBDev( &dpy->driverContext )) { + fprintf(stderr, "%s: __driInitFBDev failed\n", __FUNCTION__); + dlclose(dpy->dlHandle); + return GL_FALSE; + } + + /* do fbdev setup + */ + if (!SetupFBDev(dpy)) { + fprintf(stderr, "SetupFBDev failed\n"); + free(dpy); + return NULL; + } + + /* unlock here if not using VT -- JDS */ + if (!use_vt) { + if (dpy->driver->restoreHardware) + dpy->driver->restoreHardware( &dpy->driverContext ); + DRM_UNLOCK( dpy->driverContext.drmFD, + dpy->driverContext.pSAREA, + dpy->driverContext.serverContext ); + dpy->hwActive = 1; + } + + /* Ready for clients: + */ + if (!__miniglx_open_connections(dpy)) { + free(dpy); + return NULL; + } + + return dpy; +} + + +/** + * \brief Initialize the graphics system. + * + * \param display_name currently ignored. It is recommended to pass it as NULL. + * \return a pointer to a #Display if the function is able to initialize + * the graphics system, NULL otherwise. + * + * Allocates a MiniGLXDisplayRec structure and fills in with information from a + * configuration file. + * + * Calls __miniglx_open_connections() to connect to the server. + * + * Loads the DRI driver and pulls in Mini GLX specific hooks into a + * DRIDriverRec structure, and the standard DRI \e __driCreateScreen hook. + * Asks the driver for a list of supported visuals. Performs the per-screen + * client-side initialization. Also setups the callbacks in the screen private + * information. + * + * \todo + * - read config file + * - what about virtualWidth, etc? + * - determine dpy->driverClientMsgSize, + * - allocate dpy->driverClientMsg + */ +Display * +XOpenDisplay( const char *display_name ) +{ + Display *dpy; + + dpy = (Display *)calloc(1, sizeof(Display)); + if (!dpy) + return NULL; + + dpy->IsClient = True; + + /* read config file + */ + if (!__read_config_file( dpy )) { + fprintf(stderr, "Couldn't get configuration details\n"); + free(dpy); + return NULL; + } + + /* Connect to the server and receive driverClientMsg + */ + if (!__miniglx_open_connections(dpy)) { + free(dpy); + return NULL; + } + + /* dlopen the driver .so file + */ + if (!InitDriver(dpy)) { + fprintf(stderr, "InitDriver failed\n"); + free(dpy); + return NULL; + } + + /* Ask the driver for a list of supported configs: + */ + dpy->driver->initContextModes( &dpy->driverContext, &dpy->numModes, &dpy->modes ); + + /* Perform the client-side initialization. + * + * Clearly there is a limit of one on the number of windows in + * existence at any time. + * + * Need to shut down DRM and free DRI data in XDestroyWindow(), too. + */ + dpy->driScreen = (*dpy->createScreen)(dpy->driver, + &dpy->driverContext); + if (!dpy->driScreen) { + fprintf(stderr, "%s: __driCreateScreen failed\n", __FUNCTION__); + dlclose(dpy->dlHandle); + free(dpy); + return NULL; + } + + /* Anything more to do? + */ + return dpy; +} + + +/** + * \brief Release display resources. + * + * When the application is about to exit, the resources associated with the + * graphics system can be released by calling this function. + * + * \param dpy display handle. It becomes invalid at this point. + * + * Destroys the window if any, and destroys the per-screen + * driver private information. + * Calls __miniglx_close_connections(). + * + * If a server, puts the the framebuffer back into the initial state. + * + * Finally frees the display structure. + */ +void +XCloseDisplay( Display *dpy ) +{ + glXMakeCurrent( dpy, NULL, NULL); + + if (dpy->NumWindows) + XDestroyWindow( dpy, dpy->TheWindow ); + + /* As this is done in XOpenDisplay, need to undo it here: + */ + (*dpy->driScreen->destroyScreen)(dpy->driScreen); + + __miniglx_close_connections( dpy ); + + if (!dpy->IsClient) { + /* put framebuffer back to initial state + */ + (*dpy->driver->haltFBDev)( &dpy->driverContext ); + RestoreFBDev(dpy); + CloseFBDev(dpy); + } + + dlclose(dpy->dlHandle); + free(dpy); +} + + +/** + * \brief Window creation. + * + * \param display a display handle, as returned by XOpenDisplay(). + * \param parent the parent window for the new window. For Mini GLX this should + * be + * \code RootWindow(display, 0) \endcode + * \param x the window abscissa. For Mini GLX, it should be zero. + * \param y the window ordinate. For Mini GLX, it should be zero. + * \param width the window width. For Mini GLX, this specifies the desired + * screen width such as 1024 or 1280. + * \param height the window height. For Mini GLX, this specifies the desired + * screen height such as 768 or 1024. + * \param border_width the border width. For Mini GLX, it should be zero. + * \param depth the window pixel depth. For Mini GLX, this should be the depth + * found in the #XVisualInfo object returned by glXChooseVisual() + * \param class the window class. For Mini GLX this value should be + * #InputOutput. + * \param visual the visual type. It should be the visual field of the + * #XVisualInfo object returned by glXChooseVisual(). + * \param valuemask which fields of the XSetWindowAttributes() are to be used. + * For Mini GLX this is typically the bitmask + * \code CWBackPixel | CWBorderPixel | CWColormap \endcode + * \param attributes initial window attributes. The + * XSetWindowAttributes::background_pixel, XSetWindowAttributes::border_pixel + * and XSetWindowAttributes::colormap fields should be set. + * + * \return a window handle if it succeeds or zero if it fails. + * + * \note For Mini GLX, windows are full-screen; they cover the entire frame + * buffer. Also, Mini GLX imposes a limit of one window. A second window + * cannot be created until the first one is destroyed. + * + * This function creates and initializes a ::MiniGLXWindowRec structure after + * ensuring that there is no other window created. Performs the per-drawable + * client-side initialization calling the __DRIscreenRec::createDrawable + * method. + * + */ +Window +XCreateWindow( Display *dpy, Window parent, int x, int y, + unsigned int width, unsigned int height, + unsigned int border_width, int depth, unsigned int class, + Visual *visual, unsigned long valuemask, + XSetWindowAttributes *attributes ) +{ + Window win; + + /* ignored */ + (void) x; + (void) y; + (void) border_width; + (void) depth; + (void) class; + (void) valuemask; + (void) attributes; + + if (!dpy->IsClient) { + fprintf(stderr, "Server process may not create windows (currently)\n"); + return NULL; + } + + if (dpy->NumWindows > 0) + return NULL; /* only allow one window */ + + assert(dpy->TheWindow == NULL); + + win = malloc(sizeof(struct MiniGLXWindowRec)); + if (!win) + return NULL; + + /* In rotated mode, translate incoming x,y,width,height into + * 'normal' coordinates. + */ + if (dpy->rotateMode) { + int tmp; + tmp = width; width = height; height = tmp; + tmp = x; x = y; y = tmp; + } + + /* init other per-window fields */ + win->x = 0; + win->y = 0; + win->w = width; + win->h = height; + win->visual = visual; /* ptr assignment */ + + win->bytesPerPixel = dpy->driverContext.cpp; + win->rowStride = dpy->driverContext.shared.virtualWidth * win->bytesPerPixel; + win->size = win->rowStride * height; + win->frontStart = dpy->driverContext.FBAddress; + win->frontBottom = (GLubyte *) win->frontStart + (height-1) * win->rowStride; + + /* This is incorrect: the hardware driver could put the backbuffer + * just about anywhere. These fields, including the above are + * hardware dependent & don't really belong here. + */ + if (visual->mode->doubleBufferMode) { + win->backStart = (GLubyte *) win->frontStart + + win->rowStride * dpy->driverContext.shared.virtualHeight; + win->backBottom = (GLubyte *) win->backStart + + (height - 1) * win->rowStride; + win->curBottom = win->backBottom; + } + else { + /* single buffered */ + win->backStart = NULL; + win->backBottom = NULL; + win->curBottom = win->frontBottom; + } + + win->driDrawable = dpy->driScreen->createDrawable(dpy->driScreen, + width, height, + dpy->clientID, visual->mode); + + if (!win->driDrawable) { + fprintf(stderr, "%s: dri.createDrawable failed\n", __FUNCTION__); + free(win); + return NULL; + } + + dpy->NumWindows++; + dpy->TheWindow = win; + + return win; +} + + +/** + * \brief Destroy window. + * + * \param display display handle. + * \param w window handle. + * + * This function calls XUnmapWindow() and frees window \p w. + * + * In case of destroying the current buffer first unbinds the GLX context + * by calling glXMakeCurrent() with no drawable. + */ +void +XDestroyWindow( Display *display, Window win ) +{ + if (display && display->IsClient && win) { + /* check if destroying the current buffer */ + Window curDraw = glXGetCurrentDrawable(); + if (win == curDraw) { + glXMakeCurrent( display, NULL, NULL); + } + + XUnmapWindow( display, win ); + + /* Destroy the drawable. */ + (*win->driDrawable->destroyDrawable)(win->driDrawable); + free(win); + + /* unlink window from display */ + display->NumWindows--; + assert(display->NumWindows == 0); + display->TheWindow = NULL; + } +} + + + + +/** + * \brief Create color map structure. + * + * \param dpy the display handle as returned by XOpenDisplay(). + * \param w the window on whose screen you want to create a color map. This + * parameter is ignored by Mini GLX but should be the value returned by the + * \code RootWindow(display, 0) \endcode macro. + * \param visual a visual type supported on the screen. This parameter is + * ignored by Mini GLX but should be the XVisualInfo::visual returned by + * glXChooseVisual(). + * \param alloc the color map entries to be allocated. This parameter is ignored + * by Mini GLX but should be set to #AllocNone. + * + * \return the color map. + * + * This function is only provided to ease porting. Practically a no-op - + * returns a pointer to a dynamically allocated chunk of memory (one byte). + */ +Colormap +XCreateColormap( Display *dpy, Window w, Visual *visual, int alloc ) +{ + (void) dpy; + (void) w; + (void) visual; + (void) alloc; + return (Colormap) malloc(1); +} + + +/** + * \brief Destroy color map structure. + * + * \param display The display handle as returned by XOpenDisplay(). + * \param colormap the color map to destroy. + * + * This function is only provided to ease porting. Practically a no-op. + * + * Frees the memory pointed by \p colormap. + */ +void +XFreeColormap( Display *display, Colormap colormap ) +{ + (void) display; + (void) colormap; + free(colormap); +} + + +/** + * \brief Free client data. + * + * \param data the data that is to be freed. + * + * Frees the memory pointed by \p data. + */ +void +XFree( void *data ) +{ + free(data); +} + + +/** + * \brief Query available visuals. + * + * \param dpy the display handle, as returned by XOpenDisplay(). + * \param vinfo_mask a bitmask indicating which fields of the \p vinfo_template + * are to be matched. The value must be \c VisualScreenMask. + * \param vinfo_template a template whose fields indicate which visual + * attributes must be matched by the results. The XVisualInfo::screen field of + * this structure must be zero. + * \param nitens_return will hold the number of visuals returned. + * + * \return the address of an array of all available visuals. + * + * An example of using XGetVisualInfo() to get all available visuals follows: + * + * \code + * XVisualInfo vinfo_template, *results; + * int nitens_return; + * Display *dpy = XOpenDisplay(NULL); + * vinfo_template.screen = 0; + * results = XGetVisualInfo(dpy, VisualScreenMask, &vinfo_template, &nitens_return); + * \endcode + * + * Returns the list of all ::XVisualInfo available, one per + * ::__GLcontextMode stored in MiniGLXDisplayRec::modes. + */ +XVisualInfo * +XGetVisualInfo( Display *dpy, long vinfo_mask, XVisualInfo *vinfo_template, int *nitens_return ) +{ + XVisualInfo *results; + Visual *visResults; + int i, n; + + ASSERT(vinfo_mask == VisualScreenMask); + ASSERT(vinfo_template.screen == 0); + + n = dpy->numModes; + results = (XVisualInfo *)calloc(1, n * sizeof(XVisualInfo)); + if (!results) { + *nitens_return = 0; + return NULL; + } + + visResults = (Visual *)calloc(1, n * sizeof(Visual)); + if (!results) { + free(results); + *nitens_return = 0; + return NULL; + } + + for (i = 0; i < n; i++) { + visResults[i].mode = dpy->modes + i; + visResults[i].visInfo = results + i; + visResults[i].dpy = dpy; + + if (dpy->driverContext.bpp == 32) + visResults[i].pixelFormat = PF_B8G8R8A8; /* XXX: FIX ME */ + else + visResults[i].pixelFormat = PF_B5G6R5; /* XXX: FIX ME */ + + results[i].visual = visResults + i; + results[i].visualid = i; + results[i].class = TrueColor; + results[i].depth = dpy->modes[i].redBits + + dpy->modes[i].redBits + + dpy->modes[i].redBits + + dpy->modes[i].redBits; + results[i].bits_per_rgb = dpy->driverContext.bpp; + } + *nitens_return = n; + return results; +} + + +/** + * \brief Return a visual that matches specified attributes. + * + * \param dpy the display handle, as returned by XOpenDisplay(). + * \param screen the screen number. It is currently ignored by Mini GLX and + * should be zero. + * \param attribList a list of GLX attributes which describe the desired pixel + * format. It is terminated by the token \c None. + * + * The attributes are as follows: + * \arg GLX_USE_GL: + * This attribute should always be present in order to maintain compatibility + * with GLX. + * \arg GLX_RGBA: + * If present, only RGBA pixel formats will be considered. Otherwise, only + * color index formats are considered. + * \arg GLX_DOUBLEBUFFER: + * if present, only double-buffered pixel formats will be chosen. + * \arg GLX_RED_SIZE \e n: + * Must be followed by a non-negative integer indicating the minimum number of + * bits per red pixel component that is acceptable. + * \arg GLX_GREEN_SIZE \e n: + * Must be followed by a non-negative integer indicating the minimum number of + * bits per green pixel component that is acceptable. + * \arg GLX_BLUE_SIZE \e n: + * Must be followed by a non-negative integer indicating the minimum number of + * bits per blue pixel component that is acceptable. + * \arg GLX_ALPHA_SIZE \e n: + * Must be followed by a non-negative integer indicating the minimum number of + * bits per alpha pixel component that is acceptable. + * \arg GLX_STENCIL_SIZE \e n: + * Must be followed by a non-negative integer indicating the minimum number of + * bits per stencil value that is acceptable. + * \arg GLX_DEPTH_SIZE \e n: + * Must be followed by a non-negative integer indicating the minimum number of + * bits per depth component that is acceptable. + * \arg None: + * This token is used to terminate the attribute list. + * + * \return a pointer to an #XVisualInfo object which most closely matches the + * requirements of the attribute list. If there is no visual which matches the + * request, \c NULL will be returned. + * + * \note Visuals with accumulation buffers are not available. + * + * This function searches the list of available visual configurations in + * MiniGLXDisplayRec::configs for a configuration which best matches the GLX + * attribute list parameter. A new ::XVisualInfo object is created which + * describes the visual configuration. The match criteria is described in the + * specification. + */ +XVisualInfo* +glXChooseVisual( Display *dpy, int screen, int *attribList ) +{ + Visual *vis; + XVisualInfo *visInfo; + const int *attrib; + GLboolean rgbFlag = GL_FALSE, dbFlag = GL_FALSE, stereoFlag = GL_FALSE; + GLint redBits = 0, greenBits = 0, blueBits = 0, alphaBits = 0; + GLint indexBits = 0, depthBits = 0, stencilBits = 0; + GLint numSamples = 0; + int i; + + /* + * XXX in the future, <screen> might be interpreted as a VT + */ + ASSERT(dpy); + ASSERT(screen == 0); + + vis = (Visual *)calloc(1, sizeof(Visual)); + if (!vis) + return NULL; + + visInfo = (XVisualInfo *)malloc(sizeof(XVisualInfo)); + if (!visInfo) { + free(vis); + return NULL; + } + + visInfo->visual = vis; + vis->visInfo = visInfo; + vis->dpy = dpy; + + /* parse the attribute list */ + for (attrib = attribList; attrib && *attrib != None; attrib++) { + switch (attrib[0]) { + case GLX_DOUBLEBUFFER: + dbFlag = GL_TRUE; + break; + case GLX_RGBA: + rgbFlag = GL_TRUE; + break; + case GLX_RED_SIZE: + redBits = attrib[1]; + attrib++; + break; + case GLX_GREEN_SIZE: + redBits = attrib[1]; + attrib++; + break; + case GLX_BLUE_SIZE: + redBits = attrib[1]; + attrib++; + break; + case GLX_ALPHA_SIZE: + redBits = attrib[1]; + attrib++; + break; + case GLX_STENCIL_SIZE: + stencilBits = attrib[1]; + attrib++; + break; + case GLX_DEPTH_SIZE: + depthBits = attrib[1]; + attrib++; + break; +#if 0 + case GLX_ACCUM_RED_SIZE: + accumRedBits = attrib[1]; + attrib++; + break; + case GLX_ACCUM_GREEN_SIZE: + accumGreenBits = attrib[1]; + attrib++; + break; + case GLX_ACCUM_BLUE_SIZE: + accumBlueBits = attrib[1]; + attrib++; + break; + case GLX_ACCUM_ALPHA_SIZE: + accumAlphaBits = attrib[1]; + attrib++; + break; + case GLX_LEVEL: + /* ignored for now */ + break; +#endif + default: + /* unexpected token */ + fprintf(stderr, "unexpected token in glXChooseVisual attrib list\n"); + free(vis); + free(visInfo); + return NULL; + } + } + + /* search screen configs for suitable visual */ + (void) numSamples; + (void) indexBits; + (void) redBits; + (void) greenBits; + (void) blueBits; + (void) alphaBits; + (void) stereoFlag; + for (i = 0; i < dpy->numModes; i++) { + const __GLcontextModes *mode = dpy->modes + i; + if (mode->rgbMode == rgbFlag && + mode->redBits >= redBits && + mode->greenBits >= greenBits && + mode->blueBits >= blueBits && + mode->alphaBits >= alphaBits && + mode->depthBits >= depthBits && + mode->stencilBits >= stencilBits) { + /* found it */ + visInfo->visualid = i; + vis->mode = mode; + break; + } + } + if (!vis->mode) + return NULL; + + /* compute depth and bpp */ + if (rgbFlag) { + /* XXX maybe support depth 16 someday */ + visInfo->class = TrueColor; + visInfo->depth = dpy->driverContext.bpp; + visInfo->bits_per_rgb = dpy->driverContext.bpp; + if (dpy->driverContext.bpp == 32) + vis->pixelFormat = PF_B8G8R8A8; + else + vis->pixelFormat = PF_B5G6R5; + } + else { + /* color index mode */ + visInfo->class = PseudoColor; + visInfo->depth = 8; + visInfo->bits_per_rgb = 8; /* bits/pixel */ + vis->pixelFormat = PF_CI8; + } + + return visInfo; +} + + +/** + * \brief Return information about GLX visuals. + * + * \param dpy the display handle, as returned by XOpenDisplay(). + * \param vis the visual to be queried, as returned by glXChooseVisual(). + * \param attrib the visual attribute to be returned. + * \param value pointer to an integer in which the result of the query will be + * stored. + * + * \return zero if no error occurs, \c GLX_INVALID_ATTRIBUTE if the attribute + * parameter is invalid, or \c GLX_BAD_VISUAL if the \p vis parameter is + * invalid. + * + * Returns the appropriate attribute of ::__GLXvisualConfig pointed by + * MiniGLXVisualRec::glxConfig of XVisualInfo::visual. + * + * \sa data types. + */ +int +glXGetConfig( Display *dpy, XVisualInfo *vis, int attrib, int *value ) +{ + const __GLcontextModes *mode = vis->visual->mode; + if (!mode) { + *value = 0; + return GLX_BAD_VISUAL; + } + + switch (attrib) { + case GLX_USE_GL: + *value = True; + return 0; + case GLX_RGBA: + *value = mode->rgbMode; + return 0; + case GLX_DOUBLEBUFFER: + *value = mode->doubleBufferMode; + return 0; + case GLX_RED_SIZE: + *value = mode->redBits; + return 0; + case GLX_GREEN_SIZE: + *value = mode->greenBits; + return 0; + case GLX_BLUE_SIZE: + *value = mode->blueBits; + return 0; + case GLX_ALPHA_SIZE: + *value = mode->alphaBits; + return 0; + case GLX_DEPTH_SIZE: + *value = mode->depthBits; + return 0; + case GLX_STENCIL_SIZE: + *value = mode->stencilBits; + return 0; + default: + *value = 0; + return GLX_BAD_ATTRIBUTE; + } + return 0; +} + + +/** + * \brief Create a new GLX rendering context. + * + * \param dpy the display handle, as returned by XOpenDisplay(). + * \param vis the visual that defines the frame buffer resources available to + * the rendering context, as returned by glXChooseVisual(). + * \param shareList If non-zero, texture objects and display lists are shared + * with the named rendering context. If zero, texture objects and display lists + * will (initially) be private to this context. They may be shared when a + * subsequent context is created. + * \param direct whether direct or indirect rendering is desired. For Mini GLX + * this value is ignored but it should be set to \c True. + * + * \return a ::GLXContext handle if it succeeds or zero if it fails due to + * invalid parameter or insufficient resources. + * + * This function creates and initializes a ::MiniGLXContextRec structure and + * calls the __DRIscreenRec::createContext method to initialize the client + * private data. + */ +GLXContext +glXCreateContext( Display *dpy, XVisualInfo *vis, + GLXContext shareList, Bool direct ) +{ + GLXContext ctx; + void *sharePriv; + + ASSERT(vis); + + ctx = (struct MiniGLXContextRec *)calloc(1, sizeof(struct MiniGLXContextRec)); + if (!ctx) + return NULL; + + ctx->vid = vis->visualid; + + if (shareList) + sharePriv = shareList->driContext; + else + sharePriv = NULL; + + ctx->driContext = (*dpy->driScreen->createContext)(dpy->driScreen, + vis->visual->mode, + sharePriv); + if (!ctx->driContext) { + free(ctx); + return NULL; + } + + return ctx; +} + + +/** + * \brief Destroy a GLX context. + * + * \param dpy the display handle, as returned by XOpenDisplay(). + * \param ctx the GLX context to be destroyed. + * + * This function frees the \p ctx parameter after unbinding the current context + * by calling the __DRIcontextRec::bindContext method with zeros and calling + * the __DRIcontextRec::destroyContext method. + */ +void +glXDestroyContext( Display *dpy, GLXContext ctx ) +{ + GLXContext glxctx = glXGetCurrentContext(); + + if (ctx) { + if (glxctx == ctx) { + /* destroying current context */ + (*ctx->driContext->bindContext)(dpy->driScreen, 0, 0); + CurrentContext = 0; + } + (*ctx->driContext->destroyContext)(ctx->driContext); + free(ctx); + } +} + + +/** + * \brief Bind a GLX context to a window or a pixmap. + * + * \param dpy the display handle, as returned by XOpenDisplay(). + * \param drawable the window or drawable to bind to the rendering context. + * This should be the value returned by XCreateWindow(). + * \param ctx the GLX context to be destroyed. + * + * \return \c True if it succeeds, \c False otherwise to indicate an invalid + * display, window or context parameter. + * + * The current rendering context may be unbound by calling glXMakeCurrent() + * with the window and context parameters set to zero. + * + * An application may create any number of rendering contexts and bind them as + * needed. Note that binding a rendering context is generally not a + * light-weight operation. Most simple OpenGL applications create only one + * rendering context. + * + * This function first unbinds any old context via + * __DRIcontextRec::unbindContext and binds the new one via + * __DRIcontextRec::bindContext. + * + * If \p drawable is zero it unbinds the GLX context by calling + * __DRIcontextRec::bindContext with zeros. + */ +Bool +glXMakeCurrent( Display *dpy, GLXDrawable drawable, GLXContext ctx) +{ + if (dpy && drawable && ctx) { + GLXContext oldContext = glXGetCurrentContext(); + GLXDrawable oldDrawable = glXGetCurrentDrawable(); + /* unbind old */ + if (oldContext) { + (*oldContext->driContext->unbindContext)(oldDrawable->driDrawable, oldContext->driContext); + } + /* bind new */ + CurrentContext = ctx; + (*ctx->driContext->bindContext)(dpy->driScreen, drawable->driDrawable, ctx->driContext); + ctx->drawBuffer = drawable; + ctx->curBuffer = drawable; + } + else if (ctx && dpy) { + /* unbind */ + (*ctx->driContext->bindContext)(dpy->driScreen, 0, 0); + } + else if (dpy) { + CurrentContext = 0; /* kw: this seems to be intended??? */ + } + + return True; +} + + +/** + * \brief Exchange front and back buffers. + * + * \param dpy the display handle, as returned by XOpenDisplay(). + * \param drawable the drawable whose buffers are to be swapped. + * + * Any pending rendering commands will be completed before the buffer swap + * takes place. + * + * Calling glXSwapBuffers() on a window which is single-buffered has no effect. + * + * This function just calls the __DRIdrawableRec::swapBuffers method to do the + * work. + */ +void +glXSwapBuffers( Display *dpy, GLXDrawable drawable ) +{ + if (!dpy || !drawable) + return; + + (*drawable->driDrawable->swapBuffers)(drawable->driDrawable); +} + + +/** + * \brief Return the current context + * + * \return the current context, as specified by glXMakeCurrent(), or zero if no + * context is currently bound. + * + * \sa glXCreateContext(), glXMakeCurrent() + * + * Returns the value of the ::CurrentContext global variable. + */ +GLXContext +glXGetCurrentContext( void ) +{ + return CurrentContext; +} + + +/** + * \brief Return the current drawable. + * + * \return the current drawable, as specified by glXMakeCurrent(), or zero if + * no drawable is currently bound. + * + * This function gets the current context via glXGetCurrentContext() and + * returns the MiniGLXContextRec::drawBuffer attribute. + */ +GLXDrawable +glXGetCurrentDrawable( void ) +{ + GLXContext glxctx = glXGetCurrentContext(); + if (glxctx) + return glxctx->drawBuffer; + else + return NULL; +} + + +/** + * \brief Query function address. + * + * The glXGetProcAddress() function will return the address of any available + * OpenGL or Mini GLX function. + * + * \param procName name of the function to be returned. + * + * \return If \p procName is a valid function name, a pointer to that function + * will be returned. Otherwise, \c NULL will be returned. + * + * The purpose of glXGetProcAddress() is to facilitate using future extensions + * to OpenGL or Mini GLX. If a future version of the library adds new extension + * functions they'll be accessible via glXGetProcAddress(). The alternative is + * to hard-code calls to the new functions in the application but doing so will + * prevent linking the application with older versions of the library. + * + * Returns the function address by looking up its name in a static (name, + * address) pair list. + */ +const void * +glXGetProcAddress( const GLubyte *procName ) +{ + struct name_address { + const char *name; + const void *func; + }; + static const struct name_address functions[] = { + { "glXChooseVisual", (void *) glXChooseVisual }, + { "glXCreateContext", (void *) glXCreateContext }, + { "glXDestroyContext", (void *) glXDestroyContext }, + { "glXMakeCurrent", (void *) glXMakeCurrent }, + { "glXSwapBuffers", (void *) glXSwapBuffers }, + { "glXGetCurrentContext", (void *) glXGetCurrentContext }, + { "glXGetCurrentDrawable", (void *) glXGetCurrentDrawable }, + { "glXGetProcAddress", (void *) glXGetProcAddress }, + { "XOpenDisplay", (void *) XOpenDisplay }, + { "XCloseDisplay", (void *) XCloseDisplay }, + { "XCreateWindow", (void *) XCreateWindow }, + { "XDestroyWindow", (void *) XDestroyWindow }, + { "XMapWindow", (void *) XMapWindow }, + { "XCreateColormap", (void *) XCreateColormap }, + { "XFreeColormap", (void *) XFreeColormap }, + { "XFree", (void *) XFree }, + { "XGetVisualinfo", (void *) XGetVisualInfo }, + { NULL, NULL } + }; + const struct name_address *entry; + for (entry = functions; entry->name; entry++) { + if (strcmp(entry->name, (const char *) procName) == 0) { + return entry->func; + } + } + return _glapi_get_proc_address((const char *) procName); +} + + +/** + * \brief Query the Mini GLX version. + * + * \param dpy the display handle. It is currently ignored, but should be the + * value returned by XOpenDisplay(). + * \param major receives the major version number of Mini GLX. + * \param minor receives the minor version number of Mini GLX. + * + * \return \c True if the function succeeds, \c False if the function fails due + * to invalid parameters. + * + * \sa #MINI_GLX_VERSION_1_0. + * + * Returns the hard-coded Mini GLX version. + */ +Bool +glXQueryVersion( Display *dpy, int *major, int *minor ) +{ + (void) dpy; + *major = 1; + *minor = 0; + return True; +} + + +/*@}*/ diff --git a/src/glx/mini/miniglxP.h b/src/glx/mini/miniglxP.h new file mode 100644 index 0000000000..a32429a677 --- /dev/null +++ b/src/glx/mini/miniglxP.h @@ -0,0 +1,194 @@ +/** + * \file miniglxP.h + * \brief Define replacements for some X data types and define the DRI-related + * data structures. + * + * \note Cut down version of glxclient.h. + * + */ + +#ifndef _mini_GLX_client_h_ +#define _mini_GLX_client_h_ + +#include <signal.h> +#include <linux/fb.h> + +#include <GL/miniglx.h> +#include "glheader.h" +#include "mtypes.h" + +#include "driver.h" +#include "dri.h" + +/** + * \brief Supported pixel formats. + */ +enum PixelFormat { + PF_B8G8R8, /**< \brief 24-bit BGR */ + PF_B8G8R8A8, /**< \brief 32-bit BGRA */ + PF_B5G6R5, /**< \brief 16-bit BGR */ + PF_B5G5R5, /**< \brief 15-bit BGR */ + PF_CI8 /**< \brief 8-bit color index */ +}; + +/** + * \brief X Visual type. + * + * \sa ::Visual, \ref datatypes. + */ +struct MiniGLXVisualRec { + /** \brief GLX visual information */ + const __GLcontextModes *mode; + + /** \brief pointer back to corresponding ::XVisualInfo */ + XVisualInfo *visInfo; + + /** \brief display handle */ + Display *dpy; + + /** \brief pixel format */ + enum PixelFormat pixelFormat; +}; + + + +/** + * \brief X Window type. + * + * \sa ::Window, \ref datatypes. + */ +struct MiniGLXWindowRec { + Visual *visual; + /** \brief position (always 0,0) */ + int x, y; + /** \brief size */ + unsigned int w, h; + void *frontStart; /**< \brief start of front color buffer */ + void *backStart; /**< \brief start of back color buffer */ + size_t size; /**< \brief color buffer size, in bytes */ + GLuint bytesPerPixel; + GLuint rowStride; /**< \brief in bytes */ + GLubyte *frontBottom; /**< \brief pointer to last row */ + GLubyte *backBottom; /**< \brief pointer to last row */ + GLubyte *curBottom; /**< = frontBottom or backBottom */ + __DRIdrawable *driDrawable; + GLuint ismapped; +}; + + +/** + * \brief GLXContext type. + * + * \sa ::GLXContext, \ref datatypes. + */ +struct MiniGLXContextRec { + Window drawBuffer; /**< \brief drawing buffer */ + Window curBuffer; /**< \brief current buffer */ + VisualID vid; /**< \brief visual ID */ + __DRIcontext *driContext; /**< \brief context dependent methods */ +}; + +#define MINIGLX_BUF_SIZE 512 +#define MINIGLX_MAX_SERVER_FDS 10 +#define MINIGLX_MAX_CLIENT_FDS 1 +#define MINIGLX_EVENT_QUEUE_SZ 16 +#define MINIGLX_EVENT_QUEUE_MASK (MINIGLX_EVENT_QUEUE_SZ-1) + +/** + * A connection to/from the server + * + * All information is to/from the server is buffered and then dispatched by + * __miniglx_Select() to avoid blocking the server. + */ +struct MiniGLXConnection { + int fd; /**< \brief file descriptor */ + char readbuf[MINIGLX_BUF_SIZE]; /**< \brief read buffer */ + char writebuf[MINIGLX_BUF_SIZE]; /**< \brief write buffer */ + int readbuf_count; /**< \brief count of bytes waiting to be read */ + int writebuf_count; /**< \brief count of bytes waiting to be written */ +}; + + +/** + * \brief X Display type + * + * \sa ::Display, \ref datatypes. + */ +struct MiniGLXDisplayRec { + /** \brief fixed framebuffer screen info */ + struct fb_fix_screeninfo FixedInfo; + /** \brief original and current variable framebuffer screen info */ + struct fb_var_screeninfo OrigVarInfo, VarInfo; + struct sigaction OrigSigUsr1; + struct sigaction OrigSigUsr2; + int OriginalVT; + int ConsoleFD; /**< \brief console TTY device file descriptor */ + int FrameBufferFD; /**< \brief framebuffer device file descriptor */ + int NumWindows; /**< \brief number of open windows */ + Window TheWindow; /**< \brief open window - only allow one window for now */ + int rotateMode; + + + volatile int vtSignalFlag; + volatile int haveVT; /**< \brief whether the VT is hold */ + int hwActive; /**< \brief whether the hardware is active -- mimics + the variations of MiniGLXDisplayRec::haveVT */ + + + int IsClient; /**< \brief whether it's a client or the server */ + int clientID; + int nrFds; /**< \brief number of connections (usually just one for the clients) */ + struct MiniGLXConnection *fd; /**< \brief connections */ + + struct { + int nr, head, tail; + XEvent queue[MINIGLX_EVENT_QUEUE_SZ]; + } eventqueue; + + /** + * \name Visuals + * + * Visuals (configs) in this screen. + */ + /*@{*/ + int numModes; /**< \brief Number of modes. */ + const __GLcontextModes *modes; /**< \brief Modes list pointer. */ + /*@}*/ + + /** + * \name From __GLXdisplayPrivate + */ + /*@{*/ + driCreateScreenFunc *createScreen; /**< \brief \e __driCreateScreen hook */ + __DRIscreen *driScreen; /**< \brief Screen dependent methods */ + void *dlHandle; /**< + * \brief handle to the client dynamic + * library + */ + /*@}*/ + + /** + * \brief Mini GLX specific driver hooks + */ + struct DRIDriverRec *driver; + struct DRIDriverContextRec driverContext; + + /** + * \name Configuration details + * + * They are read from a configuration file by __read_config_file(). + */ + /*@{*/ + const char *fbdevDevice; + const char *clientDriverName; + /*@}*/ +}; + +extern __DRIscreen *__glXFindDRIScreen(Display *dpy, int scrn); + +extern Bool __glXWindowExists(Display *dpy, GLXDrawable draw); + +extern int __miniglx_open_connections( Display *dpy ); +extern void __miniglx_close_connections( Display *dpy ); + +#endif /* !_mini_GLX_client_h_ */ diff --git a/src/glx/mini/miniglx_events.c b/src/glx/mini/miniglx_events.c new file mode 100644 index 0000000000..d367dba395 --- /dev/null +++ b/src/glx/mini/miniglx_events.c @@ -0,0 +1,962 @@ +/** + * \file miniglx_events.c + * \brief Mini GLX client/server communication functions. + * \author Keith Whitwell + * + * The Mini GLX interface is a subset of the GLX interface, plus a + * minimal set of Xlib functions. This file adds interfaces to + * arbitrate a single cliprect between multiple direct rendering + * clients. + * + * A fairly complete client/server non-blocking communication + * mechanism. Probably overkill given that none of our messages + * currently exceed 1 byte in length and take place over the + * relatively benign channel provided by a Unix domain socket. + */ + +/* + * Mesa 3-D graphics library + * Version: 5.0 + * + * Copyright (C) 1999-2003 Brian Paul 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 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 + * BRIAN PAUL 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. + */ + +/* $Id: miniglx_events.c,v 1.1 2003/08/22 20:11:43 brianp Exp $ */ + + +#include <assert.h> +#include <errno.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <dlfcn.h> +#include <fcntl.h> +#include <unistd.h> +#include <sys/ioctl.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/time.h> +#include <sys/socket.h> +#include <sys/un.h> +#include <sys/stat.h> + +#include <linux/kd.h> +#include <linux/vt.h> + +#include "miniglxP.h" + +#include "xf86drm.h" +#include "sarea.h" + +#define MINIGLX_FIFO_NAME "/tmp/miniglx.fifo" + +/** Character messages. */ +enum msgs { + _CanIHaveFocus, + _IDontWantFocus, + _YouveGotFocus, + _YouveLostFocus, + _RepaintPlease, +}; + +/** + * \brief Allocate an XEvent structure on the event queue. + * + * \param dpy the display handle. + * + * \return Pointer to the queued event structure or NULL on failure. + * + * \internal + * If there is space on the XEvent queue, return a pointer + * to the next free event and increment the eventqueue tail value. + * Otherwise return null. + */ +static XEvent *queue_event( Display *dpy ) +{ + int incr = (dpy->eventqueue.tail + 1) & MINIGLX_EVENT_QUEUE_MASK; + if (incr == dpy->eventqueue.head) { + return 0; + } + else { + XEvent *ev = &dpy->eventqueue.queue[dpy->eventqueue.tail]; + dpy->eventqueue.tail = incr; + return ev; + } +} + +/** + * \brief Dequeue an XEvent and copy it into provided storage. + * + * \param dpy the display handle. + * \param event_return pointer to copy the queued event to. + * + * \return True or False depending on success. + * + * \internal + * If there is a queued XEvent on the queue, copy it to the provided + * pointer and increment the eventqueue head value. Otherwise return + * null. + */ +static int dequeue_event( Display *dpy, XEvent *event_return ) +{ + if (dpy->eventqueue.tail == dpy->eventqueue.head) { + return False; + } + else { + *event_return = dpy->eventqueue.queue[dpy->eventqueue.head]; + dpy->eventqueue.head += 1; + dpy->eventqueue.head &= MINIGLX_EVENT_QUEUE_MASK; + return True; + } +} + +/** + * \brief Shutdown a socket connection. + * + * \param dpy the display handle. + * \param i the index in dpy->fd of the socket connection. + * + * \internal + * Shutdown and close the file descriptor. If this is the special + * connection in fd[0], issue an error message and exit - there's been + * some sort of failure somewhere. Otherwise, let the application + * know about whats happened by issuing a DestroyNotify event. + */ +static void shut_fd( Display *dpy, int i ) +{ + if (dpy->fd[i].fd < 0) + return; + + shutdown (dpy->fd[i].fd, SHUT_RDWR); + close (dpy->fd[i].fd); + dpy->fd[i].fd = -1; + dpy->fd[i].readbuf_count = 0; + dpy->fd[i].writebuf_count = 0; + + if (i == 0) { + fprintf(stderr, "server connection lost\n"); + exit(1); + } + else { + /* Pass this to the application as a DestroyNotify event. + */ + XEvent *er = queue_event(dpy); + if (!er) return; + er->xdestroywindow.type = DestroyNotify; + er->xdestroywindow.serial = 0; + er->xdestroywindow.send_event = 0; + er->xdestroywindow.display = dpy; + er->xdestroywindow.window = (Window)i; + } +} + +/** + * \brief Send a message to a socket connection. + * + * \param dpy the display handle. + * \param i the index in dpy->fd of the socket connection. + * \param msg the message to send. + * \param sz the size of the message + * + * \internal + * Copy the message to the write buffer for the nominated connection. + * This will be actually sent to that file descriptor from + * __miniglx_Select(). + */ +static int send_msg( Display *dpy, int i, + const void *msg, size_t sz ) +{ + int cnt = dpy->fd[i].writebuf_count; + if (MINIGLX_BUF_SIZE - cnt < sz) { + fprintf(stderr, "client %d: writebuf overflow\n", i); + return False; + } + + memcpy( dpy->fd[i].writebuf + cnt, msg, sz ); cnt += sz; + dpy->fd[i].writebuf_count = cnt; + return True; +} + +/** + * \brief Send a message to a socket connection. + * + * \param dpy the display handle. + * \param i the index in dpy->fd of the socket connection. + * \param msg the message to send. + * + * \internal + * Use send_msg() to send a one-byte message to a socket. + */ +static int send_char_msg( Display *dpy, int i, char msg ) +{ + return send_msg( dpy, i, &msg, sizeof(char)); +} + + +/** + * \brief Block and receive a message from a socket connection. + * + * \param dpy the display handle. + * \param connection the index in dpy->fd of the socket connection. + * \param msg storage for the received message. + * \param msg_size the number of bytes to read. + * + * \internal + * Block and read from the connection's file descriptor + * until msg_size bytes have been received. + * + * Only called from welcome_message_part(). + */ +static int blocking_read( Display *dpy, int connection, + char *msg, size_t msg_size ) +{ + int i, r; + + for (i = 0 ; i < msg_size ; i += r) { + r = read(dpy->fd[connection].fd, msg + i, msg_size - i); + if (r < 1) { + fprintf(stderr, "blocking_read: %d %s\n", r, strerror(errno)); + shut_fd(dpy,connection); + return False; + } + } + + return True; +} + +/** + * \brief Send/receive a part of the welcome message. + * + * \param dpy the display handle. + * \param i the index in dpy->fd of the socket connection. + * \param msg storage for the sent/received message. + * \param sz the number of bytes to write/read. + * + * \return True on success, or False on failure. + * + * This function is called by welcome_message_part(), to either send or receive + * (via blocking_read()) part of the welcome message, according to whether + * Display::IsClient is set. + * + * Each part of the welcome message on the wire consists of a count and then the + * actual message data with that number of bytes. + */ +static int welcome_message_part( Display *dpy, int i, void **msg, int sz ) +{ + if (dpy->IsClient) { + int sz; + if (!blocking_read( dpy, i, (char *)&sz, sizeof(sz))) return False; + if (!*msg) *msg = malloc(sz); + if (!*msg) return False; + if (!blocking_read( dpy, i, *msg, sz )) return False; + } + else { + if (!send_msg( dpy, i, &sz, sizeof(sz))) return False; + if (!send_msg( dpy, i, *msg, sz )) return False; + } + + return True; +} + +/** + * \brief Send/receive the welcome message. + * + * \param dpy the display handle. + * \param i the index in dpy->fd of the socket connection. + * + * \return True on success, or False on failure. + * + * Using welcome_message_part(), sends/receives the client ID, the client + * configuration details in DRIDriverContext::shared, and the driver private + * message in DRIDriverContext::driverClientMsg. + */ +static int welcome_message( Display *dpy, int i ) +{ + void *tmp = &dpy->driverContext.shared; + int *clientid = dpy->IsClient ? &dpy->clientID : &i; + + if (!welcome_message_part( dpy, i, (void **)&clientid, sizeof(*clientid))) + return False; + + if (!welcome_message_part( dpy, i, &tmp, sizeof(dpy->driverContext.shared))) + return False; + + if (!welcome_message_part( dpy, i, + (void **)&dpy->driverContext.driverClientMsg, + dpy->driverContext.driverClientMsgSize )) + return False; + + return True; +} + + +/** + * \brief Handle a new client connection. + * + * \param dpy the display handle. + * + * \return True on success or False on failure. + * + * Accepts the connection, sets it in non-blocking operation, and finds a free + * slot in Display::fd for it. + */ +static int handle_new_client( Display *dpy ) +{ + struct sockaddr_un client_address; + unsigned int l = sizeof(client_address); + int r, i; + + r = accept(dpy->fd[0].fd, (struct sockaddr *) &client_address, &l); + if (r < 0) { + perror ("accept()"); + shut_fd(dpy,0); + return False; + } + + if (fcntl(r, F_SETFL, O_NONBLOCK) != 0) { + perror("fcntl"); + close(r); + return False; + } + + + /* Some rough & ready adaption of the XEvent semantics. + */ + for (i = 1 ; i < dpy->nrFds ; i++) { + if (dpy->fd[i].fd < 0) { + XEvent *er = queue_event(dpy); + if (!er) { + close(r); + return False; + } + + dpy->fd[i].fd = r; + er->xcreatewindow.type = CreateNotify; + er->xcreatewindow.serial = 0; + er->xcreatewindow.send_event = 0; + er->xcreatewindow.display = dpy; + er->xcreatewindow.window = (Window)i; /* fd slot == window, now? */ + + /* Send the driver client message - this is expected as the + * first message on a new connection. The recpient already + * knows the size of the message. + */ + welcome_message( dpy, i ); + return True; + } + } + + + fprintf(stderr, "[miniglx] %s: Max nr clients exceeded\n", __FUNCTION__); + close(r); + return False; +} + +/** + * This routine "puffs out" the very basic communications between + * client and server to full-sized X Events that can be handled by the + * application. + * + * \param dpy the display handle. + * \param i the index in dpy->fd of the socket connection. + * + * \return True on success or False on failure. + * + * \internal + * Interprets the message (see msg) into a XEvent and advances the file FIFO + * buffer. + */ +static int +handle_fifo_read( Display *dpy, int i ) +{ + while (dpy->fd[i].readbuf_count) { + char id = dpy->fd[i].readbuf[0]; + XEvent *er; + int count = 1; + + if (dpy->IsClient) { + switch (id) { + /* The server has called XMapWindow on a client window */ + case _YouveGotFocus: + er = queue_event(dpy); + if (!er) return False; + er->xmap.type = MapNotify; + er->xmap.serial = 0; + er->xmap.send_event = False; + er->xmap.display = dpy; + er->xmap.event = dpy->TheWindow; + er->xmap.window = dpy->TheWindow; + er->xmap.override_redirect = False; + if (dpy->driver->notifyFocus) + dpy->driver->notifyFocus( 1 ); + break; + + /* The server has called XMapWindow on a client window */ + case _RepaintPlease: + er = queue_event(dpy); + if (!er) return False; + er->xexpose.type = Expose; + er->xexpose.serial = 0; + er->xexpose.send_event = False; + er->xexpose.display = dpy; + er->xexpose.window = dpy->TheWindow; + if (dpy->rotateMode) { + er->xexpose.x = dpy->TheWindow->y; + er->xexpose.y = dpy->TheWindow->x; + er->xexpose.width = dpy->TheWindow->h; + er->xexpose.height = dpy->TheWindow->w; + } + else { + er->xexpose.x = dpy->TheWindow->x; + er->xexpose.y = dpy->TheWindow->y; + er->xexpose.width = dpy->TheWindow->w; + er->xexpose.height = dpy->TheWindow->h; + } + er->xexpose.count = 0; + break; + + /* The server has called 'XUnmapWindow' on a client + * window. + */ + case _YouveLostFocus: + er = queue_event(dpy); + if (!er) return False; + er->xunmap.type = UnmapNotify; + er->xunmap.serial = 0; + er->xunmap.send_event = False; + er->xunmap.display = dpy; + er->xunmap.event = dpy->TheWindow; + er->xunmap.window = dpy->TheWindow; + er->xunmap.from_configure = False; + if (dpy->driver->notifyFocus) + dpy->driver->notifyFocus( 0 ); + break; + + default: + fprintf(stderr, "Client received unhandled message type %d\n", id); + shut_fd(dpy, i); /* Actually shuts down the client */ + return False; + } + } + else { + switch (id) { + /* Lets the server know that the client is ready to render + * (having called 'XMapWindow' locally). + */ + case _CanIHaveFocus: + er = queue_event(dpy); + if (!er) return False; + er->xmaprequest.type = MapRequest; + er->xmaprequest.serial = 0; + er->xmaprequest.send_event = False; + er->xmaprequest.display = dpy; + er->xmaprequest.parent = 0; + er->xmaprequest.window = (Window)i; + break; + + /* Both _YouveLostFocus and _IDontWantFocus generate unmap + * events. The idea is that _YouveLostFocus lets the client + * know that it has had focus revoked by the server, whereas + * _IDontWantFocus lets the server know that the client has + * unmapped its own window. + */ + case _IDontWantFocus: + er = queue_event(dpy); + if (!er) return False; + er->xunmap.type = UnmapNotify; + er->xunmap.serial = 0; + er->xunmap.send_event = False; + er->xunmap.display = dpy; + er->xunmap.event = (Window)i; + er->xunmap.window = (Window)i; + er->xunmap.from_configure = False; + break; + + default: + fprintf(stderr, "Server received unhandled message type %d\n", id); + shut_fd(dpy, i); /* Generates DestroyNotify event */ + return False; + } + } + + dpy->fd[i].readbuf_count -= count; + + if (dpy->fd[i].readbuf_count) { + memmove(dpy->fd[i].readbuf, + dpy->fd[i].readbuf + count, + dpy->fd[i].readbuf_count); + } + } + + return True; +} + +/** + * Handle a VT signal + * + * \param dpy display handle. + * + * The VT switches is detected by comparing Display::haveVT and + * Display::hwActive. When loosing the VT the hardware lock is acquired, the + * hardware is shutdown via a call to DRIDriverRec::shutdownHardware(), and the + * VT released. When acquiring the VT back the hardware state is restored via a + * call to DRIDriverRec::restoreHardware() and the hardware lock released. + */ +static void __driHandleVtSignals( Display *dpy ) +{ + dpy->vtSignalFlag = 0; + + fprintf(stderr, "%s: haveVT %d hwActive %d\n", __FUNCTION__, + dpy->haveVT, dpy->hwActive); + + if (!dpy->haveVT && dpy->hwActive) { + /* Need to get lock and shutdown hardware */ + DRM_LIGHT_LOCK( dpy->driverContext.drmFD, + dpy->driverContext.pSAREA, + dpy->driverContext.serverContext ); + dpy->driver->shutdownHardware( &dpy->driverContext ); + + /* Can now give up control of the VT */ + ioctl( dpy->ConsoleFD, VT_RELDISP, 1 ); + dpy->hwActive = 0; + } + else if (dpy->haveVT && !dpy->hwActive) { + /* Get VT (wait??) */ + ioctl( dpy->ConsoleFD, VT_RELDISP, VT_ACTIVATE ); + + /* restore HW state, release lock */ + dpy->driver->restoreHardware( &dpy->driverContext ); + DRM_UNLOCK( dpy->driverContext.drmFD, + dpy->driverContext.pSAREA, + dpy->driverContext.serverContext ); + dpy->hwActive = 1; + } +} + + +#undef max +#define max(x,y) ((x) > (y) ? (x) : (y)) + +/** + * Logic for the select() call. + * + * \param dpy display handle. + * \param n highest fd in any set plus one. + * \param rfds fd set to be watched for reading, or NULL to create one. + * \param wfds fd set to be watched for writing, or NULL to create one. + * \param xfds fd set to be watched for exceptions or error, or NULL to create one. + * \param tv timeout value, or NULL for no timeout. + * + * \return number of file descriptors contained in the sets, or a negative number on failure. + * + * \note + * This all looks pretty complex, but is necessary especially on the + * server side to prevent a poorly-behaved client from causing the + * server to block in a read or write and hence not service the other + * clients. + * + * \sa + * See select_tut in the Linux manual pages for more discussion. + * + * \internal + * Creates and initializes the file descriptor sets by inspecting Display::fd + * if these aren't passed in the function call. Calls select() and fulfill the + * demands by trying to fill MiniGLXConnection::readbuf and draining + * MiniGLXConnection::writebuf. + * The server fd[0] is handled specially for new connections, by calling + * handle_new_client(). + * + */ +int +__miniglx_Select( Display *dpy, int n, fd_set *rfds, fd_set *wfds, fd_set *xfds, + struct timeval *tv ) +{ + int i; + int retval; + fd_set my_rfds, my_wfds; + struct timeval my_tv; + + if (!rfds) { + rfds = &my_rfds; + FD_ZERO(rfds); + } + + if (!wfds) { + wfds = &my_wfds; + FD_ZERO(wfds); + } + + /* Don't block if there are events queued. Review this if the + * flush in XMapWindow is changed to blocking. (Test case: + * miniglxtest). + */ + if (dpy->eventqueue.head != dpy->eventqueue.tail) { + my_tv.tv_sec = my_tv.tv_usec = 0; + tv = &my_tv; + } + + for (i = 0 ; i < dpy->nrFds; i++) { + if (dpy->fd[i].fd < 0) + continue; + + if (dpy->fd[i].writebuf_count) + FD_SET(dpy->fd[i].fd, wfds); + + if (dpy->fd[i].readbuf_count < MINIGLX_BUF_SIZE) + FD_SET(dpy->fd[i].fd, rfds); + + n = max(n, dpy->fd[i].fd + 1); + } + + if (dpy->vtSignalFlag) + __driHandleVtSignals( dpy ); + + retval = select( n, rfds, wfds, xfds, tv ); + + if (dpy->vtSignalFlag) { + int tmp = errno; + __driHandleVtSignals( dpy ); + errno = tmp; + } + + if (retval < 0) { + FD_ZERO(rfds); + FD_ZERO(wfds); + return retval; + } + + /* Handle server fd[0] specially on the server - accept new client + * connections. + */ + if (!dpy->IsClient) { + if (FD_ISSET(dpy->fd[0].fd, rfds)) { + FD_CLR(dpy->fd[0].fd, rfds); + handle_new_client( dpy ); + } + } + + /* Otherwise, try and fill readbuffer and drain writebuffer: + */ + for (i = 0 ; i < dpy->nrFds ; i++) { + if (dpy->fd[i].fd < 0) + continue; + + /* If there aren't any event slots left, don't examine + * any more file events. This will prevent lost events. + */ + if (dpy->eventqueue.head == + ((dpy->eventqueue.tail + 1) & MINIGLX_EVENT_QUEUE_MASK)) { + fprintf(stderr, "leaving event loop as event queue is full\n"); + return retval; + } + + if (FD_ISSET(dpy->fd[i].fd, wfds)) { + int r = write(dpy->fd[i].fd, + dpy->fd[i].writebuf, + dpy->fd[i].writebuf_count); + + if (r < 1) + shut_fd(dpy,i); + else { + dpy->fd[i].writebuf_count -= r; + if (dpy->fd[i].writebuf_count) { + memmove(dpy->fd[i].writebuf, + dpy->fd[i].writebuf + r, + dpy->fd[i].writebuf_count); + } + } + } + + if (FD_ISSET(dpy->fd[i].fd, rfds)) { + int r = read(dpy->fd[i].fd, + dpy->fd[i].readbuf + dpy->fd[i].readbuf_count, + MINIGLX_BUF_SIZE - dpy->fd[i].readbuf_count); + + if (r < 1) + shut_fd(dpy,i); + else { + dpy->fd[i].readbuf_count += r; + + handle_fifo_read( dpy, i ); + } + } + } + + return retval; +} + +/** + * \brief Handle socket events. + * + * \param dpy the display handle. + * \param nonblock whether to return immediately or wait for an event. + * + * \return True on success, False on failure. Aborts on critical error. + * + * \internal + * This function is the select() main loop. + */ +static int handle_fd_events( Display *dpy, int nonblock ) +{ + while (1) { + struct timeval tv = {0, 0}; + int r = __miniglx_Select( dpy, 0, 0, 0, 0, nonblock ? &tv : 0 ); + if (r >= 0) + return True; + if (errno == EINTR || errno == EAGAIN) + continue; + perror ("select()"); + exit (1); + } +} + +/** + * Initializes the connections. + * + * \param dpy the display handle. + * + * \return True on success or False on failure. + * + * Allocates and initializes the Display::fd array and create a Unix socket on + * the first entry. For a server binds the socket to a filename and listen for + * connections. For a client connects to the server and waits for a welcome + * message. Sets the socket in nonblocking mode. + */ +int __miniglx_open_connections( Display *dpy ) +{ + struct sockaddr_un sa; + int i; + + dpy->nrFds = dpy->IsClient ? 1 : MINIGLX_MAX_SERVER_FDS; + dpy->fd = calloc(1, dpy->nrFds * sizeof(struct MiniGLXConnection)); + if (!dpy->fd) + return False; + + for (i = 0 ; i < dpy->nrFds ; i++) + dpy->fd[i].fd = -1; + + if (!dpy->IsClient) { + if (unlink(MINIGLX_FIFO_NAME) != 0 && errno != ENOENT) { + perror("unlink " MINIGLX_FIFO_NAME); + return False; + } + + } + + /* Create a Unix socket -- Note this is *not* a network connection! + */ + dpy->fd[0].fd = socket(PF_UNIX, SOCK_STREAM, 0); + if (dpy->fd[0].fd < 0) { + perror("socket " MINIGLX_FIFO_NAME); + return False; + } + + memset(&sa, 0, sizeof(sa)); + sa.sun_family = AF_UNIX; + strcpy(sa.sun_path, MINIGLX_FIFO_NAME); + + if (dpy->IsClient) { + /* Connect to server + */ + if (connect(dpy->fd[0].fd, (struct sockaddr *)&sa, sizeof(sa)) != 0) { + perror("connect"); + shut_fd(dpy,0); + return False; + } + + /* Wait for configuration messages from the server. + */ + welcome_message( dpy, 0 ); + } + else { + mode_t tmp = umask( 0000 ); /* open to everybody ? */ + + /* Bind socket to our filename + */ + if (bind(dpy->fd[0].fd, (struct sockaddr *)&sa, sizeof(sa)) != 0) { + perror("bind"); + shut_fd(dpy,0); + return False; + } + + umask( tmp ); + + /* Listen for connections + */ + if (listen(dpy->fd[0].fd, 5) != 0) { + perror("listen"); + shut_fd(dpy,0); + return False; + } + } + + if (fcntl(dpy->fd[0].fd, F_SETFL, O_NONBLOCK) != 0) { + perror("fcntl"); + shut_fd(dpy,0); + return False; + } + + + return True; +} + + +/** + * Frees the connections initialized by __miniglx_open_connections(). + * + * \param dpy the display handle. + */ +void __miniglx_close_connections( Display *dpy ) +{ + int i; + + for (i = 0 ; i < dpy->nrFds ; i++) { + if (dpy->fd[i].fd >= 0) { + shutdown (dpy->fd[i].fd, SHUT_RDWR); + close (dpy->fd[i].fd); + } + } + + dpy->nrFds = 0; + free(dpy->fd); +} + + +/** + * Set a drawable flag. + * + * \param dpy the display handle. + * \param w drawable (window). + * \param flag flag. + * + * Sets the specified drawable flag in the SAREA and increment its stamp while + * holding the light hardware lock. + */ +static void set_drawable_flag( Display *dpy, int w, int flag ) +{ + if (dpy->driverContext.pSAREA) { + if (dpy->hwActive) + DRM_LIGHT_LOCK( dpy->driverContext.drmFD, + dpy->driverContext.pSAREA, + dpy->driverContext.serverContext ); + + dpy->driverContext.pSAREA->drawableTable[w].stamp++; + dpy->driverContext.pSAREA->drawableTable[w].flags = flag; + + if (dpy->hwActive) + DRM_UNLOCK( dpy->driverContext.drmFD, + dpy->driverContext.pSAREA, + dpy->driverContext.serverContext ); + } +} + + + +/** + * \brief Map Window. + * + * \param dpy the display handle as returned by XOpenDisplay(). + * \param w the window handle. + * + * If called by a client, sends a request for focus to the server. If + * called by the server, will generate a MapNotify and Expose event at + * the client. + * + */ +void +XMapWindow( Display *dpy, Window w ) +{ + if (dpy->IsClient) + send_char_msg( dpy, 0, _CanIHaveFocus ); + else { + set_drawable_flag( dpy, (int)w, 1 ); + send_char_msg( dpy, (int)w, _YouveGotFocus ); + send_char_msg( dpy, (int)w, _RepaintPlease ); + dpy->TheWindow = w; + } + handle_fd_events( dpy, 0 ); /* flush write queue */ +} + +/** + * \brief Unmap Window. + * + * \param dpy the display handle as returned by XOpenDisplay(). + * \param w the window handle. + * + * Called from the client: Lets the server know that the window won't + * be updated anymore. + * + * Called from the server: Tells the specified client that it no longer + * holds the focus. + */ +void +XUnmapWindow( Display *dpy, Window w ) +{ + if (dpy->IsClient) { + send_char_msg( dpy, 0, _IDontWantFocus ); + } + else { + dpy->TheWindow = 0; + set_drawable_flag( dpy, (int)w, 0 ); + send_char_msg( dpy, (int)w, _YouveLostFocus ); + } + handle_fd_events( dpy, 0 ); /* flush write queue */ +} + + +/** + * \brief Block and wait for next X event. + * + * \param dpy the display handle as returned by XOpenDisplay(). + * \param event_return a pointer to an XEvent structure for the returned data. + * + * Wait until there is a new XEvent pending. + */ +int XNextEvent(Display *dpy, XEvent *event_return) +{ + for (;;) { + if ( dpy->eventqueue.head != dpy->eventqueue.tail ) + return dequeue_event( dpy, event_return ); + + handle_fd_events( dpy, 0 ); + } +} + +/** + * \brief Non-blocking check for next X event. + * + * \param dpy the display handle as returned by XOpenDisplay(). + * \param event_mask ignored. + * \param event_return a pointer to an XEvent structure for the returned data. + * + * Check if there is a new XEvent pending. Note that event_mask is + * ignored and any pending event will be returned. + */ +Bool XCheckMaskEvent(Display *dpy, long event_mask, XEvent *event_return) +{ + if ( dpy->eventqueue.head != dpy->eventqueue.tail ) + return dequeue_event( dpy, event_return ); + + handle_fd_events( dpy, 1 ); + + return dequeue_event( dpy, event_return ); +} diff --git a/src/glx/mini/sarea.h b/src/glx/mini/sarea.h new file mode 100644 index 0000000000..47545e10e9 --- /dev/null +++ b/src/glx/mini/sarea.h @@ -0,0 +1,96 @@ +/** + * \file sarea.h + * \brief SAREA definitions. + * + * The SAREA is a memory region is shared by the DRM device, the X server and + * the clients. + * + * This file defines its layout in user space. + * + * \author Kevin E. Martin <kevin@precisioninsight.com> + * \author Jens Owen <jens@tungstengraphics.com> + * \author Rickard E. (Rik) Faith <faith@valinux.com> + */ + +/* + * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas. + * Copyright 2000 VA Linux Systems, Inc. + * 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 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. + */ + +#ifndef _SAREA_H_ +#define _SAREA_H_ + +#include "xf86drm.h" + +/* SAREA area needs to be at least a page */ +#if defined(__alpha__) +#define SAREA_MAX 0x2000 +#elif defined(__ia64__) +#define SAREA_MAX 0x10000 /* 64kB */ +#else +/* Intel 830M driver needs at least 8k SAREA */ +#define SAREA_MAX 0x2000 +#endif + +#define SAREA_MAX_DRAWABLES 256 + +#define SAREA_DRAWABLE_CLAIMED_ENTRY 0x80000000 + +/** + * \brief SAREA per drawable information. + * + * \sa _XF86DRISAREA. + */ +typedef struct _XF86DRISAREADrawable { + unsigned int stamp; + unsigned int flags; +} XF86DRISAREADrawableRec, *XF86DRISAREADrawablePtr; + +/** + * \brief SAREA frame information. + * + * \sa _XF86DRISAREA. + */ +typedef struct _XF86DRISAREAFrame { + unsigned int x; + unsigned int y; + unsigned int width; + unsigned int height; + unsigned int fullscreen; +} XF86DRISAREAFrameRec, *XF86DRISAREAFramePtr; + +/** + * \brief SAREA definition. + */ +typedef struct _XF86DRISAREA { + /** first thing is always the DRM locking structure */ + drmLock lock; + /** \todo Use readers/writer lock for drawable_lock */ + drmLock drawable_lock; + XF86DRISAREADrawableRec drawableTable[SAREA_MAX_DRAWABLES]; + XF86DRISAREAFrameRec frame; + drmContext dummy_context; +} XF86DRISAREARec, *XF86DRISAREAPtr; + +#endif diff --git a/src/glx/mini/xf86drm.c b/src/glx/mini/xf86drm.c new file mode 100644 index 0000000000..bbb02e4032 --- /dev/null +++ b/src/glx/mini/xf86drm.c @@ -0,0 +1,1587 @@ +/** + * \file xf86drm.c + * \brief User-level interface to DRM device + * + * This file is an user-friendly interface to the DRM ioctls defined in drm.h. + * + * This covers only the device-independent ioctls -- it is up to the driver to + * wrap the device-dependent ioctls. + * + * \author Rickard E. (Rik) Faith <faith@valinux.com> + * \author Kevin E. Martin <martin@valinux.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. + */ + +# include <stdio.h> +# include <stdlib.h> +# include <unistd.h> +# include <string.h> +# include <ctype.h> +# include <fcntl.h> +# include <errno.h> +# include <signal.h> +# include <sys/types.h> +# include <sys/stat.h> +# include <sys/ioctl.h> +# include <sys/mman.h> +# include <sys/time.h> +# include <stdarg.h> +# include "drm.h" + +/* Not all systems have MAP_FAILED defined */ +#ifndef MAP_FAILED +#define MAP_FAILED ((void *)-1) +#endif + +#include "xf86drm.h" + +#ifndef DRM_MAJOR +#define DRM_MAJOR 226 /* Linux */ +#endif + +#ifndef __linux__ +#undef DRM_MAJOR +#define DRM_MAJOR 145 /* Should set in drm.h for *BSD */ +#endif + +#ifndef DRM_MAX_MINOR +#define DRM_MAX_MINOR 16 +#endif + +#ifdef __linux__ +#include <sys/sysmacros.h> /* for makedev() */ +#endif + +#ifndef makedev + /* This definition needs to be changed on + some systems if dev_t is a structure. + If there is a header file we can get it + from, there would be best. */ +#define makedev(x,y) ((dev_t)(((x) << 8) | (y))) +#endif + + +/** + * \brief Output a message to stderr. + * + * \param format printf() like format string. + * + * \internal + * This function is a wrapper around vfprintf(). + */ +static void +drmMsg(const char *format, ...) +{ + va_list ap; + + const char *env; + if ((env = getenv("LIBGL_DEBUG")) && strstr(env, "verbose")) + { + va_start(ap, format); + vfprintf(stderr, format, ap); + va_end(ap); + } +} + + + +/** + * \brief Open the DRM device, creating it if necessary. + * + * \param dev major and minor numbers of the device. + * \param minor minor number of the device. + * + * \return a file descriptor on success, or a negative value on error. + * + * \internal + * Assembles the device name from \p minor and opens it, creating the device + * special file node with the major and minor numbers specified by \p dev and + * parent directory if necessary and was called by root. + */ +static int drmOpenDevice(long dev, int minor) +{ + struct stat st; + char buf[64]; + int fd; + mode_t devmode = DRM_DEV_MODE; + int isroot = !geteuid(); +#if defined(XFree86Server) + uid_t user = DRM_DEV_UID; + gid_t group = DRM_DEV_GID; +#endif + + drmMsg("drmOpenDevice: minor is %d\n", minor); + +#if defined(XFree86Server) + devmode = xf86ConfigDRI.mode ? xf86ConfigDRI.mode : DRM_DEV_MODE; + devmode &= ~(S_IXUSR|S_IXGRP|S_IXOTH); + group = (xf86ConfigDRI.group >= 0) ? xf86ConfigDRI.group : DRM_DEV_GID; +#endif + + if (stat(DRM_DIR_NAME, &st)) { + if (!isroot) return DRM_ERR_NOT_ROOT; + mkdir(DRM_DIR_NAME, DRM_DEV_DIRMODE); + chown(DRM_DIR_NAME, 0, 0); /* root:root */ + chmod(DRM_DIR_NAME, DRM_DEV_DIRMODE); + } + + sprintf(buf, DRM_DEV_NAME, DRM_DIR_NAME, minor); + drmMsg("drmOpenDevice: node name is %s\n", buf); + if (stat(buf, &st)) { + if (!isroot) return DRM_ERR_NOT_ROOT; + remove(buf); + mknod(buf, S_IFCHR | devmode, dev); + } +#if defined(XFree86Server) + chown(buf, user, group); + chmod(buf, devmode); +#endif + + fd = open(buf, O_RDWR, 0); + drmMsg("drmOpenDevice: open result is %d, (%s)\n", + fd, fd < 0 ? strerror(errno) : "OK"); + if (fd >= 0) return fd; + + if (st.st_rdev != dev) { + if (!isroot) return DRM_ERR_NOT_ROOT; + remove(buf); + mknod(buf, S_IFCHR | devmode, dev); + } + fd = open(buf, O_RDWR, 0); + drmMsg("drmOpenDevice: open result is %d, (%s)\n", + fd, fd < 0 ? strerror(errno) : "OK"); + if (fd >= 0) return fd; + + drmMsg("drmOpenDevice: Open failed\n"); + remove(buf); + return -errno; +} + + +/** + * \brief Open the DRM device + * + * \param minor device minor number. + * \param create allow to create the device if set. + * + * \return a file descriptor on success, or a negative value on error. + * + * \internal + * Calls drmOpenDevice() if \p create is set, otherwise assembles the device + * name from \p minor and opens it. + */ +static int drmOpenMinor(int minor, int create) +{ + int fd; + char buf[64]; + + if (create) return drmOpenDevice(makedev(DRM_MAJOR, minor), minor); + + sprintf(buf, DRM_DEV_NAME, DRM_DIR_NAME, minor); + if ((fd = open(buf, O_RDWR, 0)) >= 0) return fd; + drmMsg("drmOpenMinor: open result is %d, (%s)\n", + fd, fd < 0 ? strerror(errno) : "OK"); + return -errno; +} + + +/** + * \brief Determine whether the DRM kernel driver has been loaded. + * + * \return 1 if the DRM driver is loaded, 0 otherwise. + * + * \internal + * Determine the presence of the kernel driver by attempting to open the 0 + * minor and get version information. For backward compatibility with older + * Linux implementations, /proc/dri is also checked. + */ +int drmAvailable(void) +{ + drmVersionPtr version; + int retval = 0; + int fd; + + if ((fd = drmOpenMinor(0, 1)) < 0) { + /* Try proc for backward Linux compatibility */ + if (!access("/proc/dri/0", R_OK)) return 1; + return 0; + } + + if ((version = drmGetVersion(fd))) { + retval = 1; + drmFreeVersion(version); + } + close(fd); + drmMsg("close %d\n", fd); + + return retval; +} + + +/** + * \brief Open the device by bus ID. + * + * \param busid bus ID. + * + * \return a file descriptor on success, or a negative value on error. + * + * \internal + * This function attempts to open every possible minor (up to DRM_MAX_MINOR), + * comparing the device bus ID with the one supplied. + * + * \sa drmOpenMinor() and drmGetBusid(). + */ +static int drmOpenByBusid(const char *busid) +{ + int i; + int fd; + const char *buf; + + drmMsg("drmOpenByBusid: busid is %s\n", busid); + for (i = 0; i < DRM_MAX_MINOR; i++) { + fd = drmOpenMinor(i, 1); + drmMsg("drmOpenByBusid: drmOpenMinor returns %d\n", fd); + if (fd >= 0) { + buf = drmGetBusid(fd); + drmMsg("drmOpenByBusid: drmGetBusid reports %s\n", buf); + if (buf && !strcmp(buf, busid)) { + drmFreeBusid(buf); + return fd; + } + if (buf) drmFreeBusid(buf); + close(fd); + drmMsg("close %d\n", fd); + } + } + return -1; +} + + +/** + * \brief Open the device by name. + * + * \param name driver name. + * + * \return a file descriptor on success, or a negative value on error. + * + * \internal + * This function opens the first minor number that matches the driver name and + * isn't already in use. If it's in use it then it will already have a bus ID + * assigned. + * + * \sa drmOpenMinor(), drmGetVersion() and drmGetBusid(). + */ +static int drmOpenByName(const char *name) +{ + int i; + int fd; + drmVersionPtr version; + char * id; + + if (!drmAvailable()) { +#if !defined(XFree86Server) + return -1; +#else + /* try to load the kernel module now */ + if (!xf86LoadKernelModule(name)) { + ErrorF("[drm] failed to load kernel module \"%s\"\n", + name); + return -1; + } +#endif + } + + for (i = 0; i < DRM_MAX_MINOR; i++) { + if ((fd = drmOpenMinor(i, 1)) >= 0) { + if ((version = drmGetVersion(fd))) { + if (!strcmp(version->name, name)) { + drmFreeVersion(version); + +/* return fd; */ + + id = drmGetBusid(fd); + drmMsg("drmGetBusid returned '%s'\n", id ? id : "NULL"); + if (!id || !*id) { + if (id) { + drmFreeBusid(id); + } + return fd; + } else { + drmFreeBusid(id); + } + } else { + drmFreeVersion(version); + } + } + close(fd); + drmMsg("close %d\n", fd); + } + } + + return -1; +} + + +/** + * \brief Open the DRM device. + * + * Looks up the specified name and bus ID, and opens the device found. The + * entry in /dev/dri is created if necessary and if called by root. + * + * \param name driver name. Not referenced if bus ID is supplied. + * \param busid bus ID. Zero if not known. + * + * \return a file descriptor on success, or a negative value on error. + * + * \internal + * It calls drmOpenByBusid() if \p busid is specified or drmOpenByName() + * otherwise. + */ +int drmOpen(const char *name, const char *busid) +{ + + if (busid) return drmOpenByBusid(busid); + return drmOpenByName(name); +} + + +/** + * \brief Free the version information returned by drmGetVersion(). + * + * \param v pointer to the version information. + * + * \internal + * It frees the memory pointed by \p %v as well as all the non-null strings + * pointers in it. + */ +void drmFreeVersion(drmVersionPtr v) +{ + if (!v) return; + if (v->name) free(v->name); + if (v->date) free(v->date); + if (v->desc) free(v->desc); + free(v); +} + + +/** + * \brief Free the non-public version information returned by the kernel. + * + * \param v pointer to the version information. + * + * \internal + * Used by drmGetVersion() to free the memory pointed by \p %v as well as all + * the non-null strings pointers in it. + */ +static void drmFreeKernelVersion(drm_version_t *v) +{ + if (!v) return; + if (v->name) free(v->name); + if (v->date) free(v->date); + if (v->desc) free(v->desc); + free(v); +} + + +/** + * \brief Copy version information. + * + * \param d destination pointer. + * \param s source pointer. + * + * \internal + * Used by drmGetVersion() to translate the information returned by the ioctl + * interface in a private structure into the public structure counterpart. + */ +static void drmCopyVersion(drmVersionPtr d, const drm_version_t *s) +{ + d->version_major = s->version_major; + d->version_minor = s->version_minor; + d->version_patchlevel = s->version_patchlevel; + d->name_len = s->name_len; + d->name = strdup(s->name); + d->date_len = s->date_len; + d->date = strdup(s->date); + d->desc_len = s->desc_len; + d->desc = strdup(s->desc); +} + + +/** + * \brief Query the driver version information. + * + * \param fd file descriptor. + * + * \return pointer to a drmVersion structure which should be freed with + * drmFreeVersion(). + * + * \note Similar information is available via /proc/dri. + * + * \internal + * It gets the version information via successive DRM_IOCTL_VERSION ioctls, + * first with zeros to get the string lengths, and then the actually strings. + * It also null-terminates them since they might not be already. + */ +drmVersionPtr drmGetVersion(int fd) +{ + drmVersionPtr retval; + drm_version_t *version = malloc(sizeof(*version)); + + /* First, get the lengths */ + version->name_len = 0; + version->name = NULL; + version->date_len = 0; + version->date = NULL; + version->desc_len = 0; + version->desc = NULL; + + if (ioctl(fd, DRM_IOCTL_VERSION, version)) { + drmFreeKernelVersion(version); + return NULL; + } + + /* Now, allocate space and get the data */ + if (version->name_len) + version->name = malloc(version->name_len + 1); + if (version->date_len) + version->date = malloc(version->date_len + 1); + if (version->desc_len) + version->desc = malloc(version->desc_len + 1); + + if (ioctl(fd, DRM_IOCTL_VERSION, version)) { + drmFreeKernelVersion(version); + return NULL; + } + + /* The results might not be null-terminated + strings, so terminate them. */ + + if (version->name_len) version->name[version->name_len] = '\0'; + if (version->date_len) version->date[version->date_len] = '\0'; + if (version->desc_len) version->desc[version->desc_len] = '\0'; + + /* Now, copy it all back into the + client-visible data structure... */ + retval = malloc(sizeof(*retval)); + drmCopyVersion(retval, version); + drmFreeKernelVersion(version); + return retval; +} + + +/** + * \brief Get version information for the DRM user space library. + * + * This version number is driver independent. + * + * \param fd file descriptor. + * + * \return version information. + * + * \internal + * This function allocates and fills a drm_version structure with a hard coded + * version number. + */ +drmVersionPtr drmGetLibVersion(int fd) +{ + drm_version_t *version = malloc(sizeof(*version)); + + /* Version history: + * revision 1.0.x = original DRM interface with no drmGetLibVersion + * entry point and many drm<Device> extensions + * revision 1.1.x = added drmCommand entry points for device extensions + * added drmGetLibVersion to identify libdrm.a version + */ + version->version_major = 1; + version->version_minor = 1; + version->version_patchlevel = 0; + + return (drmVersionPtr)version; +} + + +/** + * \brief Free the bus ID information. + * + * \param busid bus ID information string as given by drmGetBusid(). + * + * \internal + * This function is just frees the memory pointed by \p busid. + */ +void drmFreeBusid(const char *busid) +{ + free((void *)busid); +} + + +/** + * \brief Get the bus ID of the device. + * + * \param fd file descriptor. + * + * \return bus ID string. + * + * \internal + * This function gets the bus ID via successive DRM_IOCTL_GET_UNIQUE ioctls to + * get the string length and data, passing the arguments in a drm_unique + * structure. + */ +char *drmGetBusid(int fd) +{ + drm_unique_t u; + + u.unique_len = 0; + u.unique = NULL; + + if (ioctl(fd, DRM_IOCTL_GET_UNIQUE, &u)) return NULL; + u.unique = malloc(u.unique_len + 1); + if (ioctl(fd, DRM_IOCTL_GET_UNIQUE, &u)) return NULL; + u.unique[u.unique_len] = '\0'; + return u.unique; +} + + +/** + * \brief Set the bus ID of the device. + * + * \param fd file descriptor. + * \param busid bus ID string. + * + * \return zero on success, negative on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_SET_UNIQUE ioctl, passing + * the arguments in a drm_unique structure. + */ +int drmSetBusid(int fd, const char *busid) +{ + drm_unique_t u; + + u.unique = (char *)busid; + u.unique_len = strlen(busid); + + if (ioctl(fd, DRM_IOCTL_SET_UNIQUE, &u)) { + return -errno; + } + return 0; +} + + +/** + * \brief Specifies a range of memory that is available for mapping by a + * non-root process. + * + * \param fd file descriptor. + * \param offset usually the physical address. The actual meaning depends of + * the \p type parameter. See below. + * \param size of the memory in bytes. + * \param type type of the memory to be mapped. + * \param flags combination of several flags to modify the function actions. + * \param handle will be set to a value that may be used as the offset + * parameter for mmap(). + * + * \return zero on success or a negative value on error. + * + * \par Mapping the frame buffer + * For the frame buffer + * - \p offset will be the physical address of the start of the frame buffer, + * - \p size will be the size of the frame buffer in bytes, and + * - \p type will be DRM_FRAME_BUFFER. + * + * \par + * The area mapped will be uncached. If MTRR support is available in the + * kernel, the frame buffer area will be set to write combining. + * + * \par Mapping the MMIO register area + * For the MMIO register area, + * - \p offset will be the physical address of the start of the register area, + * - \p size will be the size of the register area bytes, and + * - \p type will be DRM_REGISTERS. + * \par + * The area mapped will be uncached. + * + * \par Mapping the SAREA + * For the SAREA, + * - \p offset will be ignored and should be set to zero, + * - \p size will be the desired size of the SAREA in bytes, + * - \p type will be DRM_SHM. + * + * \par + * A shared memory area of the requested size will be created and locked in + * kernel memory. This area may be mapped into client-space by using the handle + * returned. + * + * \note May only be called by root. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_ADD_MAP ioctl, passing + * the arguments in a drm_map structure. + */ +int drmAddMap(int fd, + drmHandle offset, + drmSize size, + drmMapType type, + drmMapFlags flags, + drmHandlePtr handle) +{ + drm_map_t map; + + map.offset = offset; + map.size = size; + map.handle = 0; + map.type = type; + map.flags = flags; + if (ioctl(fd, DRM_IOCTL_ADD_MAP, &map)) return -errno; + if (handle) *handle = (drmHandle)map.handle; + return 0; +} + + +/** + * \brief Make buffers available for DMA transfers. + * + * \param fd file descriptor. + * \param count number of buffers. + * \param size size of each buffer. + * \param flags buffer allocation flags. + * \param agp_offset offset in the AGP aperture + * + * \return number of buffers allocated, negative on error. + * + * \internal + * This function is a wrapper around DRM_IOCTL_ADD_BUFS ioctl. + * + * \sa drm_buf_desc. + */ +int drmAddBufs(int fd, int count, int size, drmBufDescFlags flags, + int agp_offset) +{ + drm_buf_desc_t request; + + request.count = count; + request.size = size; + request.low_mark = 0; + request.high_mark = 0; + request.flags = flags; + request.agp_start = agp_offset; + + if (ioctl(fd, DRM_IOCTL_ADD_BUFS, &request)) return -errno; + return request.count; +} + + +/** + * \brief Free buffers. + * + * \param fd file descriptor. + * \param count number of buffers to free. + * \param list list of buffers to be freed. + * + * \return zero on success, or a negative value on failure. + * + * \note This function is primarily used for debugging. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_FREE_BUFS ioctl, passing + * the arguments in a drm_buf_free structure. + */ +int drmFreeBufs(int fd, int count, int *list) +{ + drm_buf_free_t request; + + request.count = count; + request.list = list; + if (ioctl(fd, DRM_IOCTL_FREE_BUFS, &request)) return -errno; + return 0; +} + + +/** + * \brief Close the device. + * + * \param fd file descriptor. + * + * \internal + * This function closes the file descriptor. + */ +int drmClose(int fd) +{ + drmMsg("close %d\n", fd); + return close(fd); +} + + +/** + * \brief Map a region of memory. + * + * \param fd file descriptor. + * \param handle handle returned by drmAddMap(). + * \param size size in bytes. Must match the size used by drmAddMap(). + * \param address will contain the user-space virtual address where the mapping + * begins. + * + * \return zero on success, or a negative value on failure. + * + * \internal + * This function is a wrapper for mmap(). + */ +int drmMap(int fd, + drmHandle handle, + drmSize size, + drmAddressPtr address) +{ + static unsigned long pagesize_mask = 0; + + if (fd < 0) return -EINVAL; + + if (!pagesize_mask) + pagesize_mask = getpagesize() - 1; + + size = (size + pagesize_mask) & ~pagesize_mask; + + *address = mmap(0, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, handle); + if (*address == MAP_FAILED) return -errno; + return 0; +} + + +/** + * \brief Unmap mappings obtained with drmMap(). + * + * \param address address as given by drmMap(). + * \param size size in bytes. Must match the size used by drmMap(). + * + * \return zero on success, or a negative value on failure. + * + * \internal + * This function is a wrapper for unmap(). + */ +int drmUnmap(drmAddress address, drmSize size) +{ + return munmap(address, size); +} + + +/** + * \brief Map all DMA buffers into client-virtual space. + * + * \param fd file descriptor. + * + * \return a pointer to a ::drmBufMap structure. + * + * \note The client may not use these buffers until obtaining buffer indices + * with drmDMA(). + * + * \internal + * This function calls the DRM_IOCTL_MAP_BUFS ioctl and copies the returned + * information about the buffers in a drm_buf_map structure into the + * client-visible data structures. + */ +drmBufMapPtr drmMapBufs(int fd) +{ + drm_buf_map_t bufs; + drmBufMapPtr retval; + int i; + + bufs.count = 0; + bufs.list = NULL; + if (ioctl(fd, DRM_IOCTL_MAP_BUFS, &bufs)) return NULL; + + if (bufs.count) { + if (!(bufs.list = malloc(bufs.count * sizeof(*bufs.list)))) + return NULL; + + if (ioctl(fd, DRM_IOCTL_MAP_BUFS, &bufs)) { + free(bufs.list); + return NULL; + } + /* Now, copy it all back into the + client-visible data structures... */ + retval = malloc(sizeof(*retval)); + retval->count = bufs.count; + retval->list = malloc(bufs.count * sizeof(*retval->list)); + for (i = 0; i < bufs.count; i++) { + retval->list[i].idx = bufs.list[i].idx; + retval->list[i].total = bufs.list[i].total; + retval->list[i].used = 0; + retval->list[i].address = bufs.list[i].address; + } + return retval; + } + return NULL; +} + + +/** + * \brief Unmap buffers allocated with drmMapBufs(). + * + * \return zero on success, or negative value on failure. + * + * \internal + * Calls munmap() for every buffer stored in \p bufs. + */ +int drmUnmapBufs(drmBufMapPtr bufs) +{ + int i; + + for (i = 0; i < bufs->count; i++) { + munmap(bufs->list[i].address, bufs->list[i].total); + } + return 0; +} + + +#define DRM_DMA_RETRY 16 + +/** + * \brief Reserve DMA buffers. + * + * \param fd file descriptor. + * \param request + * + * \return zero on success, or a negative value on failure. + * + * \internal + * Assemble the arguments into a drm_dma structure and keeps issuing the + * DRM_IOCTL_DMA ioctl until success or until maximum number of retries. + */ +int drmDMA(int fd, drmDMAReqPtr request) +{ + drm_dma_t dma; + int ret, i = 0; + + /* Copy to hidden structure */ + dma.context = request->context; + dma.send_count = request->send_count; + dma.send_indices = request->send_list; + dma.send_sizes = request->send_sizes; + dma.flags = request->flags; + dma.request_count = request->request_count; + dma.request_size = request->request_size; + dma.request_indices = request->request_list; + dma.request_sizes = request->request_sizes; + + do { + ret = ioctl( fd, DRM_IOCTL_DMA, &dma ); + } while ( ret && errno == EAGAIN && i++ < DRM_DMA_RETRY ); + + if ( ret == 0 ) { + request->granted_count = dma.granted_count; + return 0; + } else { + return -errno; + } +} + + +/** + * \brief Obtain heavyweight hardware lock. + * + * \param fd file descriptor. + * \param context context. + * \param flags flags that determine the sate of the hardware when the function + * returns. + * + * \return always zero. + * + * \internal + * This function translates the arguments into a drm_lock structure and issue + * the DRM_IOCTL_LOCK ioctl until the lock is successfully acquired. + */ +int drmGetLock(int fd, drmContext context, drmLockFlags flags) +{ + drm_lock_t lock; + + lock.context = context; + lock.flags = 0; + if (flags & DRM_LOCK_READY) lock.flags |= _DRM_LOCK_READY; + if (flags & DRM_LOCK_QUIESCENT) lock.flags |= _DRM_LOCK_QUIESCENT; + if (flags & DRM_LOCK_FLUSH) lock.flags |= _DRM_LOCK_FLUSH; + if (flags & DRM_LOCK_FLUSH_ALL) lock.flags |= _DRM_LOCK_FLUSH_ALL; + if (flags & DRM_HALT_ALL_QUEUES) lock.flags |= _DRM_HALT_ALL_QUEUES; + if (flags & DRM_HALT_CUR_QUEUES) lock.flags |= _DRM_HALT_CUR_QUEUES; + + while (ioctl(fd, DRM_IOCTL_LOCK, &lock)) + ; + return 0; +} + +static void (*drm_unlock_callback)( void ) = 0; + +/** + * \brief Release the hardware lock. + * + * \param fd file descriptor. + * \param context context. + * + * \return zero on success, or a negative value on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_UNLOCK ioctl, passing the + * argument in a drm_lock structure. + */ +int drmUnlock(int fd, drmContext context) +{ + drm_lock_t lock; + int ret; + + lock.context = context; + lock.flags = 0; + ret = ioctl(fd, DRM_IOCTL_UNLOCK, &lock); + + /* Need this to synchronize vt releasing. Could also teach fbdev + * about the drm lock... + */ + if (drm_unlock_callback) { + drm_unlock_callback(); + } + + return ret; +} + + +/** + * \brief Create context. + * + * Used by the X server during GLXContext initialization. This causes + * per-context kernel-level resources to be allocated. + * + * \param fd file descriptor. + * \param handle is set on success. To be used by the client when requesting DMA + * dispatch with drmDMA(). + * + * \return zero on success, or a negative value on failure. + * + * \note May only be called by root. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_ADD_CTX ioctl, passing the + * argument in a drm_ctx structure. + */ +int drmCreateContext(int fd, drmContextPtr handle) +{ + drm_ctx_t ctx; + + ctx.flags = 0; /* Modified with functions below */ + if (ioctl(fd, DRM_IOCTL_ADD_CTX, &ctx)) return -errno; + *handle = ctx.handle; + return 0; +} + + +/** + * \brief Destroy context. + * + * Free any kernel-level resources allocated with drmCreateContext() associated + * with the context. + * + * \param fd file descriptor. + * \param handle handle given by drmCreateContext(). + * + * \return zero on success, or a negative value on failure. + * + * \note May only be called by root. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_RM_CTX ioctl, passing the + * argument in a drm_ctx structure. + */ +int drmDestroyContext(int fd, drmContext handle) +{ + drm_ctx_t ctx; + ctx.handle = handle; + if (ioctl(fd, DRM_IOCTL_RM_CTX, &ctx)) return -errno; + return 0; +} + + +/** + * \brief Acquire the AGP device. + * + * Must be called before any of the other AGP related calls. + * + * \param fd file descriptor. + * + * \return zero on success, or a negative value on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_ACQUIRE ioctl. + */ +int drmAgpAcquire(int fd) +{ + if (ioctl(fd, DRM_IOCTL_AGP_ACQUIRE, NULL)) return -errno; + return 0; +} + + +/** + * \brief Release the AGP device. + * + * \param fd file descriptor. + * + * \return zero on success, or a negative value on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_RELEASE ioctl. + */ +int drmAgpRelease(int fd) +{ + if (ioctl(fd, DRM_IOCTL_AGP_RELEASE, NULL)) return -errno; + return 0; +} + + +/** + * \brief Set the AGP mode. + * + * \param fd file descriptor. + * \param mode AGP mode. + * + * \return zero on success, or a negative value on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_ENABLE ioctl, passing the + * argument in a drm_agp_mode structure. + */ +int drmAgpEnable(int fd, unsigned long mode) +{ + drm_agp_mode_t m; + + m.mode = mode; + if (ioctl(fd, DRM_IOCTL_AGP_ENABLE, &m)) return -errno; + return 0; +} + + +/** + * \brief Allocate a chunk of AGP memory. + * + * \param fd file descriptor. + * \param size requested memory size in bytes. Will be rounded to page boundary. + * \param type type of memory to allocate. + * \param address if not zero, will be set to the physical address of the + * allocated memory. + * \param handle on success will be set to a handle of the allocated memory. + * + * \return zero on success, or a negative value on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_ALLOC ioctl, passing the + * arguments in a drm_agp_buffer structure. + */ +int drmAgpAlloc(int fd, unsigned long size, unsigned long type, + unsigned long *address, unsigned long *handle) +{ + drm_agp_buffer_t b; + *handle = 0; + b.size = size; + b.handle = 0; + b.type = type; + if (ioctl(fd, DRM_IOCTL_AGP_ALLOC, &b)) return -errno; + if (address != 0UL) *address = b.physical; + *handle = b.handle; + return 0; +} + + +/** + * \brief Free a chunk of AGP memory. + * + * \param fd file descriptor. + * \param handle handle to the allocated memory, as given by drmAgpAllocate(). + * + * \return zero on success, or a negative value on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_FREE ioctl, passing the + * argument in a drm_agp_buffer structure. + */ +int drmAgpFree(int fd, unsigned long handle) +{ + drm_agp_buffer_t b; + + b.size = 0; + b.handle = handle; + if (ioctl(fd, DRM_IOCTL_AGP_FREE, &b)) return -errno; + return 0; +} + + +/** + * \brief Bind a chunk of AGP memory. + * + * \param fd file descriptor. + * \param handle handle to the allocated memory, as given by drmAgpAllocate(). + * \param offset offset in bytes. It will round to page boundary. + * + * \return zero on success, or a negative value on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_BIND ioctl, passing the + * argument in a drm_agp_binding structure. + */ +int drmAgpBind(int fd, unsigned long handle, unsigned long offset) +{ + drm_agp_binding_t b; + + b.handle = handle; + b.offset = offset; + if (ioctl(fd, DRM_IOCTL_AGP_BIND, &b)) return -errno; + return 0; +} + + +/** + * \brief Unbind a chunk of AGP memory. + * + * \param fd file descriptor. + * \param handle handle to the allocated memory, as given by drmAgpAllocate(). + * + * \return zero on success, or a negative value on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_UNBIND ioctl, passing + * the argument in a drm_agp_binding structure. + */ +int drmAgpUnbind(int fd, unsigned long handle) +{ + drm_agp_binding_t b; + + b.handle = handle; + b.offset = 0; + if (ioctl(fd, DRM_IOCTL_AGP_UNBIND, &b)) return -errno; + return 0; +} + + +/** + * \brief Get AGP driver major version number. + * + * \param fd file descriptor. + * + * \return major version number on success, or a negative value on failure.. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the + * necessary information in a drm_agp_info structure. + */ +int drmAgpVersionMajor(int fd) +{ + drm_agp_info_t i; + + if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return -errno; + return i.agp_version_major; +} + + +/** + * \brief Get AGP driver minor version number. + * + * \param fd file descriptor. + * + * \return minor version number on success, or a negative value on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the + * necessary information in a drm_agp_info structure. + */ +int drmAgpVersionMinor(int fd) +{ + drm_agp_info_t i; + + if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return -errno; + return i.agp_version_minor; +} + + +/** + * \brief Get AGP mode. + * + * \param fd file descriptor. + * + * \return mode on success, or zero on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the + * necessary information in a drm_agp_info structure. + */ +unsigned long drmAgpGetMode(int fd) +{ + drm_agp_info_t i; + + if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return 0; + return i.mode; +} + + +/** + * \brief Get AGP aperture base. + * + * \param fd file descriptor. + * + * \return aperture base on success, zero on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the + * necessary information in a drm_agp_info structure. + */ +unsigned long drmAgpBase(int fd) +{ + drm_agp_info_t i; + + if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return 0; + return i.aperture_base; +} + + +/** + * \brief Get AGP aperture size. + * + * \param fd file descriptor. + * + * \return aperture size on success, zero on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the + * necessary information in a drm_agp_info structure. + */ +unsigned long drmAgpSize(int fd) +{ + drm_agp_info_t i; + + if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return 0; + return i.aperture_size; +} + + +/** + * \brief Get used AGP memory. + * + * \param fd file descriptor. + * + * \return memory used on success, or zero on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the + * necessary information in a drm_agp_info structure. + */ +unsigned long drmAgpMemoryUsed(int fd) +{ + drm_agp_info_t i; + + if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return 0; + return i.memory_used; +} + + +/** + * \brief Get available AGP memory. + * + * \param fd file descriptor. + * + * \return memory available on success, or zero on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the + * necessary information in a drm_agp_info structure. + */ +unsigned long drmAgpMemoryAvail(int fd) +{ + drm_agp_info_t i; + + if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return 0; + return i.memory_allowed; +} + + +/** + * \brief Get hardware vendor ID. + * + * \param fd file descriptor. + * + * \return vendor ID on success, or zero on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the + * necessary information in a drm_agp_info structure. + */ +unsigned int drmAgpVendorId(int fd) +{ + drm_agp_info_t i; + + if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return 0; + return i.id_vendor; +} + + +/** + * \brief Get hardware device ID. + * + * \param fd file descriptor. + * + * \return zero on success, or zero on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_AGP_INFO ioctl, getting the + * necessary information in a drm_agp_info structure. + */ +unsigned int drmAgpDeviceId(int fd) +{ + drm_agp_info_t i; + + if (ioctl(fd, DRM_IOCTL_AGP_INFO, &i)) return 0; + return i.id_device; +} + +int drmScatterGatherAlloc(int fd, unsigned long size, unsigned long *handle) +{ + drm_scatter_gather_t sg; + + *handle = 0; + sg.size = size; + sg.handle = 0; + if (ioctl(fd, DRM_IOCTL_SG_ALLOC, &sg)) return -errno; + *handle = sg.handle; + return 0; +} + +int drmScatterGatherFree(int fd, unsigned long handle) +{ + drm_scatter_gather_t sg; + + sg.size = 0; + sg.handle = handle; + if (ioctl(fd, DRM_IOCTL_SG_FREE, &sg)) return -errno; + return 0; +} + +/** + * \brief Wait for VBLANK. + * + * \param fd file descriptor. + * \param vbl pointer to a drmVBlank structure. + * + * \return zero on success, or a negative value on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_WAIT_VBLANK ioctl. + */ +int drmWaitVBlank(int fd, drmVBlankPtr vbl) +{ + int ret; + + do { + ret = ioctl(fd, DRM_IOCTL_WAIT_VBLANK, vbl); + } while (ret && errno == EINTR); + + return ret; +} + + +/** + * \brief Install IRQ handler. + * + * \param fd file descriptor. + * \param irq IRQ number. + * + * \return zero on success, or a negative value on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_CONTROL ioctl, passing the + * argument in a drm_control structure. + */ +int drmCtlInstHandler(int fd, int irq) +{ + drm_control_t ctl; + + ctl.func = DRM_INST_HANDLER; + ctl.irq = irq; + if (ioctl(fd, DRM_IOCTL_CONTROL, &ctl)) return -errno; + return 0; +} + + +/** + * \brief Uninstall IRQ handler. + * + * \param fd file descriptor. + * + * \return zero on success, or a negative value on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_CONTROL ioctl, passing the + * argument in a drm_control structure. + */ +int drmCtlUninstHandler(int fd) +{ + drm_control_t ctl; + + ctl.func = DRM_UNINST_HANDLER; + ctl.irq = 0; + if (ioctl(fd, DRM_IOCTL_CONTROL, &ctl)) return -errno; + return 0; +} + + +/** + * \brief Get IRQ from bus ID. + * + * \param fd file descriptor. + * \param busnum bus number. + * \param devnum device number. + * \param funcnum function number. + * + * \return IRQ number on success, or a negative value on failure. + * + * \internal + * This function is a wrapper around the DRM_IOCTL_IRQ_BUSID ioctl, passing the + * arguments in a drm_irq_busid structure. + */ +int drmGetInterruptFromBusID(int fd, int busnum, int devnum, int funcnum) +{ + drm_irq_busid_t p; + + p.busnum = busnum; + p.devnum = devnum; + p.funcnum = funcnum; + if (ioctl(fd, DRM_IOCTL_IRQ_BUSID, &p)) return -errno; + return p.irq; +} + + +/** + * \brief Send a device-specific command. + * + * \param fd file descriptor. + * \param drmCommandIndex command index + * + * \return zero on success, or a negative value on failure. + * + * \internal + * It issues a ioctl given by + * \code DRM_COMMAND_BASE + drmCommandIndex \endcode. + */ +int drmCommandNone(int fd, unsigned long drmCommandIndex) +{ + void *data = NULL; /* dummy */ + unsigned long request; + + request = DRM_IO( DRM_COMMAND_BASE + drmCommandIndex); + + if (ioctl(fd, request, data)) { + return -errno; + } + return 0; +} + + +/** + * \brief Send a device-specific read command. + * + * \param fd file descriptor. + * \param drmCommandIndex command index + * \param data destination pointer of the data to be read. + * \param size size of the data to be read. + * + * \return zero on success, or a negative value on failure. + * + * \internal + * It issues a read ioctl given by + * \code DRM_COMMAND_BASE + drmCommandIndex \endcode. + */ +int drmCommandRead(int fd, unsigned long drmCommandIndex, + void *data, unsigned long size ) +{ + unsigned long request; + + request = DRM_IOC( DRM_IOC_READ, DRM_IOCTL_BASE, + DRM_COMMAND_BASE + drmCommandIndex, size); + + if (ioctl(fd, request, data)) { + return -errno; + } + return 0; +} + + +/** + * \brief Send a device-specific write command. + * + * \param fd file descriptor. + * \param drmCommandIndex command index + * \param data source pointer of the data to be written. + * \param size size of the data to be written. + * + * \return zero on success, or a negative value on failure. + * + * \internal + * It issues a write ioctl given by + * \code DRM_COMMAND_BASE + drmCommandIndex \endcode. + */ +int drmCommandWrite(int fd, unsigned long drmCommandIndex, + void *data, unsigned long size ) +{ + unsigned long request; + + request = DRM_IOC( DRM_IOC_WRITE, DRM_IOCTL_BASE, + DRM_COMMAND_BASE + drmCommandIndex, size); + + if (ioctl(fd, request, data)) { + return -errno; + } + return 0; +} + + +/** + * \brief Send a device-specific read-write command. + * + * \param fd file descriptor. + * \param drmCommandIndex command index + * \param data source pointer of the data to be read and written. + * \param size size of the data to be read and written. + * + * \return zero on success, or a negative value on failure. + * + * \internal + * It issues a read-write ioctl given by + * \code DRM_COMMAND_BASE + drmCommandIndex \endcode. + */ +int drmCommandWriteRead(int fd, unsigned long drmCommandIndex, + void *data, unsigned long size ) +{ + unsigned long request; + + request = DRM_IOC( DRM_IOC_READ|DRM_IOC_WRITE, DRM_IOCTL_BASE, + DRM_COMMAND_BASE + drmCommandIndex, size); + + if (ioctl(fd, request, data)) { + return -errno; + } + return 0; +} + diff --git a/src/glx/mini/xf86drm.h b/src/glx/mini/xf86drm.h new file mode 100644 index 0000000000..cee5ca5f69 --- /dev/null +++ b/src/glx/mini/xf86drm.h @@ -0,0 +1,609 @@ +/* xf86drm.h -- OS-independent header for DRM user-level library interface + * Created: Tue Jan 5 08:17:23 1999 by faith@precisioninsight.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 + * 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> + * + * $XFree86: xc/programs/Xserver/hw/xfree86/os-support/xf86drm.h,v 1.22 2003/06/12 14:12:35 eich Exp $ + * + */ + +#ifndef _XF86DRM_H_ +#define _XF86DRM_H_ + + /* Defaults, if nothing set in xf86config */ +#define DRM_DEV_UID 0 +#define DRM_DEV_GID 0 +/* Default /dev/dri directory permissions 0755 */ +#define DRM_DEV_DIRMODE \ + (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) +#define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP) + +#define DRM_DIR_NAME "/dev/dri" +#define DRM_DEV_NAME "%s/card%d" +#define DRM_PROC_NAME "/proc/dri/" /* For backware Linux compatibility */ + +#define DRM_ERR_NO_DEVICE (-1001) +#define DRM_ERR_NO_ACCESS (-1002) +#define DRM_ERR_NOT_ROOT (-1003) +#define DRM_ERR_INVALID (-1004) +#define DRM_ERR_NO_FD (-1005) + +#define DRM_AGP_NO_HANDLE 0 + +typedef unsigned long drmHandle, *drmHandlePtr; /* To mapped regions */ +typedef unsigned int drmSize, *drmSizePtr; /* For mapped regions */ +typedef void *drmAddress, **drmAddressPtr; /* For mapped regions */ +typedef unsigned int drmContext, *drmContextPtr; /* GLXContext handle */ +typedef unsigned int drmDrawable, *drmDrawablePtr; /* Unused */ +typedef unsigned int drmMagic, *drmMagicPtr; /* Magic for auth */ + +typedef struct _drmVersion { + int version_major; /* Major version */ + int version_minor; /* Minor version */ + int version_patchlevel; /* Patch level */ + int name_len; /* Length of name buffer */ + char *name; /* Name of driver */ + int date_len; /* Length of date buffer */ + char *date; /* User-space buffer to hold date */ + int desc_len; /* Length of desc buffer */ + char *desc; /* User-space buffer to hold desc */ +} drmVersion, *drmVersionPtr; + +typedef struct _drmStats { + unsigned long count; /* Number of data */ + struct { + unsigned long value; /* Value from kernel */ + const char *long_format; /* Suggested format for long_name */ + const char *long_name; /* Long name for value */ + const char *rate_format; /* Suggested format for rate_name */ + const char *rate_name; /* Short name for value per second */ + int isvalue; /* True if value (vs. counter) */ + const char *mult_names; /* Multiplier names (e.g., "KGM") */ + int mult; /* Multiplier value (e.g., 1024) */ + int verbose; /* Suggest only in verbose output */ + } data[15]; +} drmStatsT; + + + /* All of these enums *MUST* match with the + kernel implementation -- so do *NOT* + change them! (The drmlib implementation + will just copy the flags instead of + translating them.) */ +typedef enum { + DRM_FRAME_BUFFER = 0, /* WC, no caching, no core dump */ + DRM_REGISTERS = 1, /* no caching, no core dump */ + DRM_SHM = 2, /* shared, cached */ + DRM_AGP = 3, /* AGP/GART */ + DRM_SCATTER_GATHER = 4 /* PCI scatter/gather */ +} drmMapType; + +typedef enum { + DRM_RESTRICTED = 0x0001, /* Cannot be mapped to client-virtual */ + DRM_READ_ONLY = 0x0002, /* Read-only in client-virtual */ + DRM_LOCKED = 0x0004, /* Physical pages locked */ + DRM_KERNEL = 0x0008, /* Kernel requires access */ + DRM_WRITE_COMBINING = 0x0010, /* Use write-combining, if available */ + DRM_CONTAINS_LOCK = 0x0020, /* SHM page that contains lock */ + DRM_REMOVABLE = 0x0040 /* Removable mapping */ +} drmMapFlags; + +typedef enum { /* These values *MUST* match drm.h */ + /* Flags for DMA buffer dispatch */ + DRM_DMA_BLOCK = 0x01, /* Block until buffer dispatched. Note, + the buffer may not yet have been + processed by the hardware -- getting a + hardware lock with the hardware + quiescent will ensure that the buffer + has been processed. */ + DRM_DMA_WHILE_LOCKED = 0x02, /* Dispatch while lock held */ + DRM_DMA_PRIORITY = 0x04, /* High priority dispatch */ + + /* Flags for DMA buffer request */ + DRM_DMA_WAIT = 0x10, /* Wait for free buffers */ + DRM_DMA_SMALLER_OK = 0x20, /* Smaller-than-requested buffers ok */ + DRM_DMA_LARGER_OK = 0x40 /* Larger-than-requested buffers ok */ +} drmDMAFlags; + +typedef enum { + DRM_PAGE_ALIGN = 0x01, + DRM_AGP_BUFFER = 0x02, + DRM_SG_BUFFER = 0x04 +} drmBufDescFlags; + +typedef enum { + DRM_LOCK_READY = 0x01, /* Wait until hardware is ready for DMA */ + DRM_LOCK_QUIESCENT = 0x02, /* Wait until hardware quiescent */ + DRM_LOCK_FLUSH = 0x04, /* Flush this context's DMA queue first */ + DRM_LOCK_FLUSH_ALL = 0x08, /* Flush all DMA queues first */ + /* These *HALT* flags aren't supported yet + -- they will be used to support the + full-screen DGA-like mode. */ + DRM_HALT_ALL_QUEUES = 0x10, /* Halt all current and future queues */ + DRM_HALT_CUR_QUEUES = 0x20 /* Halt all current queues */ +} drmLockFlags; + +typedef enum { + DRM_CONTEXT_PRESERVED = 0x01, /* This context is preserved and + never swapped. */ + DRM_CONTEXT_2DONLY = 0x02 /* This context is for 2D rendering only. */ +} drmContextFlags, *drmContextFlagsPtr; + +typedef struct _drmBufDesc { + int count; /* Number of buffers of this size */ + int size; /* Size in bytes */ + int low_mark; /* Low water mark */ + int high_mark; /* High water mark */ +} drmBufDesc, *drmBufDescPtr; + +typedef struct _drmBufInfo { + int count; /* Number of buffers described in list */ + drmBufDescPtr list; /* List of buffer descriptions */ +} drmBufInfo, *drmBufInfoPtr; + +typedef struct _drmBuf { + int idx; /* Index into master buflist */ + int total; /* Buffer size */ + int used; /* Amount of buffer in use (for DMA) */ + drmAddress address; /* Address */ +} drmBuf, *drmBufPtr; + +typedef struct _drmBufMap { + int count; /* Number of buffers mapped */ + drmBufPtr list; /* Buffers */ +} drmBufMap, *drmBufMapPtr; + +typedef struct _drmLock { + volatile unsigned int lock; + char padding[60]; + /* This is big enough for most current (and future?) architectures: + DEC Alpha: 32 bytes + Intel Merced: ? + Intel P5/PPro/PII/PIII: 32 bytes + Intel StrongARM: 32 bytes + Intel i386/i486: 16 bytes + MIPS: 32 bytes (?) + Motorola 68k: 16 bytes + Motorola PowerPC: 32 bytes + Sun SPARC: 32 bytes + */ +} drmLock, *drmLockPtr; + +typedef struct _drmDMAReq { + /* Indices here refer to the offset into + list in drmBufInfo */ + drmContext context; /* Context handle */ + int send_count; /* Number of buffers to send */ + int *send_list; /* List of handles to buffers */ + int *send_sizes; /* Lengths of data to send, in bytes */ + drmDMAFlags flags; /* Flags */ + int request_count; /* Number of buffers requested */ + int request_size; /* Desired size of buffers requested */ + int *request_list; /* Buffer information */ + int *request_sizes; /* Minimum acceptable sizes */ + int granted_count; /* Number of buffers granted at this size */ +} drmDMAReq, *drmDMAReqPtr; + +typedef struct _drmRegion { + drmHandle handle; + unsigned int offset; + drmSize size; + drmAddress map; +} drmRegion, *drmRegionPtr; + +typedef struct _drmTextureRegion { + unsigned char next; + unsigned char prev; + unsigned char in_use; + unsigned char padding; /* Explicitly pad this out */ + unsigned int age; +} drmTextureRegion, *drmTextureRegionPtr; + + +typedef struct _drmClipRect { + unsigned short x1; /* Upper left: inclusive */ + unsigned short y1; + unsigned short x2; /* Lower right: exclusive */ + unsigned short y2; +} drmClipRect, *drmClipRectPtr; + + +typedef enum { + DRM_VBLANK_ABSOLUTE = 0x0, /* Wait for specific vblank sequence number */ + DRM_VBLANK_RELATIVE = 0x1, /* Wait for given number of vblanks */ + DRM_VBLANK_SIGNAL = 0x40000000 /* Send signal instead of blocking */ +} drmVBlankSeqType; + +typedef struct _drmVBlankReq { + drmVBlankSeqType type; + unsigned int sequence; + unsigned long signal; +} drmVBlankReq, *drmVBlankReqPtr; + +typedef struct _drmVBlankReply { + drmVBlankSeqType type; + unsigned int sequence; + long tval_sec; + long tval_usec; +} drmVBlankReply, *drmVBlankReplyPtr; + +typedef union _drmVBlank { + drmVBlankReq request; + drmVBlankReply reply; +} drmVBlank, *drmVBlankPtr; + + + +#define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock) + +#define DRM_LOCK_HELD 0x80000000 /* Hardware lock is held */ +#define DRM_LOCK_CONT 0x40000000 /* Hardware lock is contended */ + +#if defined(__GNUC__) && (__GNUC__ >= 2) +# if defined(__i386) || defined(__AMD64__) + /* Reflect changes here to drmP.h */ +#define DRM_CAS(lock,old,new,__ret) \ + do { \ + int __dummy; /* Can't mark eax as clobbered */ \ + __asm__ __volatile__( \ + "lock ; cmpxchg %4,%1\n\t" \ + "setnz %0" \ + : "=d" (__ret), \ + "=m" (__drm_dummy_lock(lock)), \ + "=a" (__dummy) \ + : "2" (old), \ + "r" (new)); \ + } while (0) + +#elif defined(__alpha__) + +#define DRM_CAS(lock, old, new, ret) \ + do { \ + int old32; \ + int cur32; \ + __asm__ __volatile__( \ + " mb\n" \ + " zap %4, 0xF0, %0\n" \ + " ldl_l %1, %2\n" \ + " zap %1, 0xF0, %1\n" \ + " cmpeq %0, %1, %1\n" \ + " beq %1, 1f\n" \ + " bis %5, %5, %1\n" \ + " stl_c %1, %2\n" \ + "1: xor %1, 1, %1\n" \ + " stl %1, %3" \ + : "+r" (old32), \ + "+&r" (cur32), \ + "=m" (__drm_dummy_lock(lock)),\ + "=m" (ret) \ + : "r" (old), \ + "r" (new)); \ + } while(0) + +#elif defined(__sparc__) + +#define DRM_CAS(lock,old,new,__ret) \ +do { register unsigned int __old __asm("o0"); \ + register unsigned int __new __asm("o1"); \ + register volatile unsigned int *__lock __asm("o2"); \ + __old = old; \ + __new = new; \ + __lock = (volatile unsigned int *)lock; \ + __asm__ __volatile__( \ + /*"cas [%2], %3, %0"*/ \ + ".word 0xd3e29008\n\t" \ + /*"membar #StoreStore | #StoreLoad"*/ \ + ".word 0x8143e00a" \ + : "=&r" (__new) \ + : "0" (__new), \ + "r" (__lock), \ + "r" (__old) \ + : "memory"); \ + __ret = (__new != __old); \ +} while(0) + +#elif defined(__ia64__) + +#if 0 +/* this currently generates bad code (missing stop bits)... */ +#include <ia64intrin.h> + +#define DRM_CAS(lock,old,new,__ret) \ + do { \ + __ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \ + (old), (new)) \ + != (old)); \ + } while (0) + +#else +#define DRM_CAS(lock,old,new,__ret) \ + do { \ + unsigned int __result, __old = (old); \ + __asm__ __volatile__( \ + "mf\n" \ + "mov ar.ccv=%2\n" \ + ";;\n" \ + "cmpxchg4.acq %0=%1,%3,ar.ccv" \ + : "=r" (__result), "=m" (__drm_dummy_lock(lock)) \ + : "r" (__old), "r" (new) \ + : "memory"); \ + __ret = (__result) != (__old); \ + } while (0) + +#endif + +#elif defined(__powerpc__) + +#define DRM_CAS(lock,old,new,__ret) \ + do { \ + __asm__ __volatile__( \ + "sync;" \ + "0: lwarx %0,0,%1;" \ + " xor. %0,%3,%0;" \ + " bne 1f;" \ + " stwcx. %2,0,%1;" \ + " bne- 0b;" \ + "1: " \ + "sync;" \ + : "=&r"(__ret) \ + : "r"(lock), "r"(new), "r"(old) \ + : "cr0", "memory"); \ + } while (0) + +#endif /* architecture */ +#endif /* __GNUC__ >= 2 */ + +#ifndef DRM_CAS +#define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */ +#endif + +#if defined(__alpha__) || defined(__powerpc__) +#define DRM_CAS_RESULT(_result) int _result +#else +#define DRM_CAS_RESULT(_result) char _result +#endif + +#define DRM_LIGHT_LOCK(fd,lock,context) \ + do { \ + DRM_CAS_RESULT(__ret); \ + DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \ + if (__ret) drmGetLock(fd,context,0); \ + } while(0) + + /* This one counts fast locks -- for + benchmarking only. */ +#define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count) \ + do { \ + DRM_CAS_RESULT(__ret); \ + DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \ + if (__ret) drmGetLock(fd,context,0); \ + else ++count; \ + } while(0) + +#define DRM_LOCK(fd,lock,context,flags) \ + do { \ + if (flags) drmGetLock(fd,context,flags); \ + else DRM_LIGHT_LOCK(fd,lock,context); \ + } while(0) + +#define DRM_UNLOCK(fd,lock,context) \ + do { \ + DRM_CAS_RESULT(__ret); \ + DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret); \ + if (__ret) drmUnlock(fd,context); \ + } while(0) + + /* Simple spin locks */ +#define DRM_SPINLOCK(spin,val) \ + do { \ + DRM_CAS_RESULT(__ret); \ + do { \ + DRM_CAS(spin,0,val,__ret); \ + if (__ret) while ((spin)->lock); \ + } while (__ret); \ + } while(0) + +#define DRM_SPINLOCK_TAKE(spin,val) \ + do { \ + DRM_CAS_RESULT(__ret); \ + int cur; \ + do { \ + cur = (*spin).lock; \ + DRM_CAS(spin,cur,val,__ret); \ + } while (__ret); \ + } while(0) + +#define DRM_SPINLOCK_COUNT(spin,val,count,__ret) \ + do { \ + int __i; \ + __ret = 1; \ + for (__i = 0; __ret && __i < count; __i++) { \ + DRM_CAS(spin,0,val,__ret); \ + if (__ret) for (;__i < count && (spin)->lock; __i++); \ + } \ + } while(0) + +#define DRM_SPINUNLOCK(spin,val) \ + do { \ + DRM_CAS_RESULT(__ret); \ + if ((*spin).lock == val) { /* else server stole lock */ \ + do { \ + DRM_CAS(spin,val,0,__ret); \ + } while (__ret); \ + } \ + } while(0) + +/* General user-level programmer's API: unprivileged */ +extern int drmAvailable(void); +extern int drmOpen(const char *name, const char *busid); +extern int drmClose(int fd); +extern drmVersionPtr drmGetVersion(int fd); +extern drmVersionPtr drmGetLibVersion(int fd); +extern void drmFreeVersion(drmVersionPtr); +extern int drmGetMagic(int fd, drmMagicPtr magic); +extern char *drmGetBusid(int fd); +extern int drmGetInterruptFromBusID(int fd, int busnum, int devnum, + int funcnum); +extern int drmGetMap(int fd, int idx, drmHandle *offset, + drmSize *size, drmMapType *type, + drmMapFlags *flags, drmHandle *handle, + int *mtrr); +extern int drmGetClient(int fd, int idx, int *auth, int *pid, + int *uid, unsigned long *magic, + unsigned long *iocs); +extern int drmGetStats(int fd, drmStatsT *stats); +extern int drmCommandNone(int fd, unsigned long drmCommandIndex); +extern int drmCommandRead(int fd, unsigned long drmCommandIndex, + void *data, unsigned long size); +extern int drmCommandWrite(int fd, unsigned long drmCommandIndex, + void *data, unsigned long size); +extern int drmCommandWriteRead(int fd, unsigned long drmCommandIndex, + void *data, unsigned long size); + +/* General user-level programmer's API: X server (root) only */ +extern void drmFreeBusid(const char *busid); +extern int drmSetBusid(int fd, const char *busid); +extern int drmAuthMagic(int fd, drmMagic magic); +extern int drmAddMap(int fd, + drmHandle offset, + drmSize size, + drmMapType type, + drmMapFlags flags, + drmHandlePtr handle); +extern int drmRmMap(int fd, drmHandle handle); +extern int drmAddContextPrivateMapping(int fd, drmContext ctx_id, + drmHandle handle); + +extern int drmAddBufs(int fd, int count, int size, + drmBufDescFlags flags, + int agp_offset); +extern int drmMarkBufs(int fd, double low, double high); +extern int drmCreateContext(int fd, drmContextPtr handle); +extern int drmSetContextFlags(int fd, drmContext context, + drmContextFlags flags); +extern int drmGetContextFlags(int fd, drmContext context, + drmContextFlagsPtr flags); +extern int drmAddContextTag(int fd, drmContext context, void *tag); +extern int drmDelContextTag(int fd, drmContext context); +extern void *drmGetContextTag(int fd, drmContext context); +extern drmContextPtr drmGetReservedContextList(int fd, int *count); +extern void drmFreeReservedContextList(drmContextPtr); +extern int drmSwitchToContext(int fd, drmContext context); +extern int drmDestroyContext(int fd, drmContext handle); +extern int drmCreateDrawable(int fd, drmDrawablePtr handle); +extern int drmDestroyDrawable(int fd, drmDrawable handle); +extern int drmCtlInstHandler(int fd, int irq); +extern int drmCtlUninstHandler(int fd); +extern int drmInstallSIGIOHandler(int fd, + void (*f)(int fd, + void *oldctx, + void *newctx)); +extern int drmRemoveSIGIOHandler(int fd); + +/* General user-level programmer's API: authenticated client and/or X */ +extern int drmMap(int fd, + drmHandle handle, + drmSize size, + drmAddressPtr address); +extern int drmUnmap(drmAddress address, drmSize size); +extern drmBufInfoPtr drmGetBufInfo(int fd); +extern drmBufMapPtr drmMapBufs(int fd); +extern int drmUnmapBufs(drmBufMapPtr bufs); +extern int drmDMA(int fd, drmDMAReqPtr request); +extern int drmFreeBufs(int fd, int count, int *list); +extern int drmGetLock(int fd, + drmContext context, + drmLockFlags flags); +extern int drmUnlock(int fd, drmContext context); +extern int drmFinish(int fd, int context, drmLockFlags flags); +extern int drmGetContextPrivateMapping(int fd, drmContext ctx_id, + drmHandlePtr handle); + +/* AGP/GART support: X server (root) only */ +extern int drmAgpAcquire(int fd); +extern int drmAgpRelease(int fd); +extern int drmAgpEnable(int fd, unsigned long mode); +extern int drmAgpAlloc(int fd, unsigned long size, + unsigned long type, unsigned long *address, + unsigned long *handle); +extern int drmAgpFree(int fd, unsigned long handle); +extern int drmAgpBind(int fd, unsigned long handle, + unsigned long offset); +extern int drmAgpUnbind(int fd, unsigned long handle); + +/* AGP/GART info: authenticated client and/or X */ +extern int drmAgpVersionMajor(int fd); +extern int drmAgpVersionMinor(int fd); +extern unsigned long drmAgpGetMode(int fd); +extern unsigned long drmAgpBase(int fd); /* Physical location */ +extern unsigned long drmAgpSize(int fd); /* Bytes */ +extern unsigned long drmAgpMemoryUsed(int fd); +extern unsigned long drmAgpMemoryAvail(int fd); +extern unsigned int drmAgpVendorId(int fd); +extern unsigned int drmAgpDeviceId(int fd); + +/* PCI scatter/gather support: X server (root) only */ +extern int drmScatterGatherAlloc(int fd, unsigned long size, + unsigned long *handle); +extern int drmScatterGatherFree(int fd, unsigned long handle); + +extern int drmWaitVBlank(int fd, drmVBlankPtr vbl); + +/* Support routines */ +extern int drmError(int err, const char *label); +extern void *drmMalloc(int size); +extern void drmFree(void *pt); + +/* Hash table routines */ +extern void *drmHashCreate(void); +extern int drmHashDestroy(void *t); +extern int drmHashLookup(void *t, unsigned long key, void **value); +extern int drmHashInsert(void *t, unsigned long key, void *value); +extern int drmHashDelete(void *t, unsigned long key); +extern int drmHashFirst(void *t, unsigned long *key, void **value); +extern int drmHashNext(void *t, unsigned long *key, void **value); + +/* PRNG routines */ +extern void *drmRandomCreate(unsigned long seed); +extern int drmRandomDestroy(void *state); +extern unsigned long drmRandom(void *state); +extern double drmRandomDouble(void *state); + +/* Skip list routines */ + +extern void *drmSLCreate(void); +extern int drmSLDestroy(void *l); +extern int drmSLLookup(void *l, unsigned long key, void **value); +extern int drmSLInsert(void *l, unsigned long key, void *value); +extern int drmSLDelete(void *l, unsigned long key); +extern int drmSLNext(void *l, unsigned long *key, void **value); +extern int drmSLFirst(void *l, unsigned long *key, void **value); +extern void drmSLDump(void *l); +extern int drmSLLookupNeighbors(void *l, unsigned long key, + unsigned long *prev_key, void **prev_value, + unsigned long *next_key, void **next_value); + +#endif |