mesa/drm/ttm: allow build against non-TTM aware libdrm

I'll release a libdrm 2.3.1 without TTM apis included from a special
drm branch that should allow mesa 7.1 to build against it.

I've had to turn off DRI2 stuff.

configure.ac

@@ -478,6 +478,19 @@ AC_ARG_ENABLE([driglx-direct],
         [enable direct rendering in GLX for DRI @<:@default=enabled@:>@])],
     [driglx_direct="$enableval"],
     [driglx_direct="yes"])
+dnl ttm support
+AC_ARG_ENABLE([ttm-api],
+    [AS_HELP_STRING([--enable-ttm-api],
+	[enable TTM API users])],
+    [ttmapi="$enableval"],
+    [ttmapi="no"])
+
+if test "x$ttmapi" = "xyes"; then
+    save_CFLAGS=$CFLAGS
+    CFLAGS=$LIBDRM_CFLAGS
+    AC_CHECK_HEADERS([xf86mm.h],[],[AC_MSG_ERROR([xf86mm.h required for TTM.])],[#include "stdint.h"\n#include "drm.h"])
+    CFLAGS=$save_CFLAGS
+fi
 
 dnl Which drivers to build - default is chosen by platform
 AC_ARG_WITH([dri-drivers],
@@ -516,6 +529,10 @@ if test "$mesa_driver" = dri; then
         DEFINES="$DEFINES -DGLX_USE_TLS -DPTHREADS"
     fi
 
+    if test "x$ttmapi" = xyes; then
+        DEFINES="$DEFINES -DTTM_API"
+    fi
+
     if test "x$USING_EGL" = x1; then
         PROGRAM_DIRS="egl"
     fi
@@ -934,6 +951,7 @@ if test "$mesa_driver" = dri; then
     dri_dirs=`echo $DRI_DIRS | $SED 's/^ *//;s/  */ /;s/ *$//'`
     echo "        DRI drivers:     $dri_dirs"
     echo "        DRI driver dir:  $DRI_DRIVER_INSTALL_DIR"
+    echo "        TTM API support: $ttmapi"
 fi
 
 dnl Libraries

src/mesa/drivers/dri/common/dri_bufmgr.h

@@ -219,4 +219,42 @@ void dri_post_process_relocs(dri_bo *batch_buf);
 void dri_post_submit(dri_bo *batch_buf, dri_fence **last_fence);
 int dri_bufmgr_check_aperture_space(dri_bo *bo);
 
+#ifndef TTM_API
+/* reuse some TTM API */
+
+#define DRM_BO_MEM_LOCAL 0
+#define DRM_BO_MEM_TT 1
+#define DRM_BO_MEM_VRAM 2
+#define DRM_BO_MEM_PRIV0 3
+#define DRM_BO_MEM_PRIV1 4
+#define DRM_BO_MEM_PRIV2 5
+#define DRM_BO_MEM_PRIV3 6
+#define DRM_BO_MEM_PRIV4 7
+
+#define DRM_BO_FLAG_READ        (1ULL << 0)
+#define DRM_BO_FLAG_WRITE       (1ULL << 1)
+#define DRM_BO_FLAG_EXE         (1ULL << 2)
+#define DRM_BO_MASK_ACCESS	(DRM_BO_FLAG_READ | DRM_BO_FLAG_WRITE | DRM_BO_FLAG_EXE)
+#define DRM_BO_FLAG_NO_EVICT    (1ULL << 4)
+
+#define DRM_BO_FLAG_MAPPABLE    (1ULL << 5)
+#define DRM_BO_FLAG_SHAREABLE   (1ULL << 6)
+
+#define DRM_BO_FLAG_CACHED      (1ULL << 7)
+
+#define DRM_BO_FLAG_NO_MOVE     (1ULL << 8)
+#define DRM_BO_FLAG_CACHED_MAPPED    (1ULL << 19)
+#define DRM_BO_FLAG_FORCE_CACHING  (1ULL << 13)
+#define DRM_BO_FLAG_FORCE_MAPPABLE (1ULL << 14)
+#define DRM_BO_FLAG_TILE           (1ULL << 15)
+
+#define DRM_BO_FLAG_MEM_LOCAL  (1ULL << 24)
+#define DRM_BO_FLAG_MEM_TT     (1ULL << 25)
+#define DRM_BO_FLAG_MEM_VRAM   (1ULL << 26)
+
+#define DRM_BO_MASK_MEM         0x00000000FF000000ULL
+
+#define DRM_FENCE_TYPE_EXE                 0x00000001
+#endif
+
 #endif

src/mesa/drivers/dri/common/dri_util.c

@@ -771,8 +771,10 @@ static void driDestroyScreen(__DRIscreen *psp)
 	    (*psp->DriverAPI.DestroyScreen)(psp);
 
 	if (psp->dri2.enabled) {
+#ifdef TTM_API
 	    drmBOUnmap(psp->fd, &psp->dri2.sareaBO);
 	    drmBOUnreference(psp->fd, &psp->dri2.sareaBO);
+#endif
 	} else {
 	   (void)drmUnmap((drmAddress)psp->pSAREA, SAREA_MAX);
 	   (void)drmUnmap((drmAddress)psp->pFB, psp->fbSize);
@@ -904,6 +906,7 @@ dri2CreateNewScreen(int scrn, int fd, unsigned int sarea_handle,
 		    const __DRIextension **extensions,
 		    const __DRIconfig ***driver_configs, void *data)
 {
+#ifdef TTM_API
     static const __DRIextension *emptyExtensionList[] = { NULL };
     __DRIscreen *psp;
     unsigned int *p;
@@ -971,6 +974,9 @@ dri2CreateNewScreen(int scrn, int fd, unsigned int sarea_handle,
     psp->DriverAPI = driDriverAPI;
 
     return psp;
+#else
+    return NULL;
+#endif
 }
 
 static const __DRIextension **driGetExtensions(__DRIscreen *psp)

src/mesa/drivers/dri/common/dri_util.h

@@ -53,7 +53,6 @@
 #include <drm.h>
 #include <drm_sarea.h>
 #include <xf86drm.h>
-#include <xf86mm.h>
 #include "GL/internal/glcore.h"
 #include "GL/internal/dri_interface.h"
 #include "GL/internal/dri_sarea.h"
@@ -524,7 +523,9 @@ struct __DRIscreenRec {
 	/* Flag to indicate that this is a DRI2 screen.  Many of the above
 	 * fields will not be valid or initializaed in that case. */
 	int enabled;
+#ifdef TTM_API
 	drmBO sareaBO;
+#endif
 	void *sarea;
 	__DRIEventBuffer *buffer;
 	__DRILock *lock;

src/mesa/drivers/dri/intel/intel_bufmgr_ttm.c

@@ -50,6 +50,7 @@
 #include "i915_drm.h"
 
 #include "intel_bufmgr_ttm.h"
+#ifdef TTM_API
 
 #define DBG(...) do {					\
    if (bufmgr_ttm->bufmgr.debug)			\
@@ -1099,4 +1100,23 @@ intel_bufmgr_ttm_init(int fd, unsigned int fence_type,
 
     return &bufmgr_ttm->bufmgr;
 }
+#else
+dri_bufmgr *
+intel_bufmgr_ttm_init(int fd, unsigned int fence_type,
+		      unsigned int fence_type_flush, int batch_size)
+{
+    return NULL;
+}
 
+dri_bo *
+intel_ttm_bo_create_from_handle(dri_bufmgr *bufmgr, const char *name,
+			      unsigned int handle)
+{
+    return NULL;
+}
+
+void
+intel_ttm_enable_bo_reuse(dri_bufmgr *bufmgr)
+{
+}
+#endif

src/mesa/drivers/dri/intel/intel_bufmgr_ttm.h

@@ -7,8 +7,10 @@
 extern dri_bo *intel_ttm_bo_create_from_handle(dri_bufmgr *bufmgr, const char *name,
 					       unsigned int handle);
 
+#ifdef TTM_API
 dri_fence *intel_ttm_fence_create_from_arg(dri_bufmgr *bufmgr, const char *name,
 					   drm_fence_arg_t *arg);
+#endif
 
 
 dri_bufmgr *intel_bufmgr_ttm_init(int fd, unsigned int fence_type,
@@ -17,4 +19,10 @@ dri_bufmgr *intel_bufmgr_ttm_init(int fd, unsigned int fence_type,
 void
 intel_ttm_enable_bo_reuse(dri_bufmgr *bufmgr);
 
+#ifndef TTM_API
+#define DRM_I915_FENCE_CLASS_ACCEL 0
+#define DRM_I915_FENCE_TYPE_RW 2
+#define DRM_I915_FENCE_FLAG_FLUSHED 0x01000000
+#endif
+
 #endif

src/mesa/drivers/dri/intel/intel_ioctl.c

@@ -147,6 +147,7 @@ intel_batch_ioctl(struct intel_context *intel,
    }
 }
 
+#ifdef TTM_API
 void
 intel_exec_ioctl(struct intel_context *intel,
 		 GLuint used,
@@ -211,3 +212,12 @@ intel_exec_ioctl(struct intel_context *intel,
    }
    *fence = fo;
 }
+#else
+void
+intel_exec_ioctl(struct intel_context *intel,
+		 GLuint used,
+		 GLboolean ignore_cliprects, GLboolean allow_unlock,
+		 void *start, GLuint count, dri_fence **fence)
+{
+}
+#endif