rename via_memory for memory allocation handling

1 files changed, 179 insertions, 0 deletions

diff --git a/src/via_memmgr.c b/src/via_memmgr.c
new file mode 100644
index 0000000..d483266
--- /dev/null
+++ b/src/via_memmgr.c
@@ -0,0 +1,179 @@
+/*
+ * Copyright 2003 Red Hat, 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
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86fbman.h"
+
+#ifdef XF86DRI
+#include "xf86drm.h"
+#endif
+
+#include "via_driver.h"
+#include "via_swov.h"
+#ifdef XF86DRI
+#include "via_drm.h"
+#endif
+
+/*
+ *	Isolate the wonders of X memory allocation and DRI memory allocation
+ *	and 4.3 or 4.4 differences in one abstraction.
+ *
+ *	The pool code indicates who provided the memory:
+ *	0  -  nobody
+ *	1  -  xf86 linear
+ *	2  -  DRM
+ */
+
+static void
+viaExaFBSave(ScreenPtr pScreen, ExaOffscreenArea * exa)
+{
+    FatalError("Xserver is incompatible with openchrome EXA.\n"
+               "\t\tPlease look at Xorg bugzilla bug #7639, and at\n"
+               "\t\thttp://wiki.openchrome.org/tikiwiki/tiki-index"
+               ".php?page=EXAAcceleration .\n");
+}
+
+void
+VIAFreeLinear(VIAMemPtr mem)
+{
+    DEBUG(ErrorF("Freed %lu (pool %d)\n", mem->base, mem->pool));
+    switch (mem->pool) {
+        case 0:
+            return;
+        case 1:
+            {
+                VIAPtr pVia = VIAPTR(mem->pScrn);
+
+                if (pVia->useEXA && !pVia->NoAccel) {
+                    exaOffscreenFree(mem->pScrn->pScreen, mem->exa);
+                    mem->linear = NULL;
+                    mem->pool = 0;
+                    return;
+                }
+            }
+            xf86FreeOffscreenLinear(mem->linear);
+            mem->linear = NULL;
+            mem->pool = 0;
+            return;
+        case 2:
+#ifdef XF86DRI
+            if (drmCommandWrite(mem->drm_fd, DRM_VIA_FREEMEM,
+                                &mem->drm, sizeof(drm_via_mem_t)) < 0)
+                ErrorF("DRM module failed free.\n");
+#endif
+            mem->pool = 0;
+            return;
+    }
+}
+
+int
+viaOffScreenLinear(VIAMemPtr mem, ScrnInfoPtr pScrn, unsigned long size)
+{
+    int depth = pScrn->bitsPerPixel >> 3;
+
+    VIAPtr pVia = VIAPTR(pScrn);
+
+    if (pVia->useEXA && !pVia->NoAccel) {
+
+        mem->exa = exaOffscreenAlloc(pScrn->pScreen, size,
+                                     32, TRUE, NULL, NULL);
+        if (mem->exa == NULL)
+            return BadAlloc;
+        mem->exa->save = viaExaFBSave;
+        mem->base = mem->exa->offset;
+        mem->pool = 1;
+        mem->pScrn = pScrn;
+        return Success;
+    }
+
+    mem->linear = xf86AllocateOffscreenLinear(pScrn->pScreen,
+                                              (size + depth - 1) / depth,
+                                              32, NULL, NULL, NULL);
+    if (mem->linear == NULL)
+        return BadAlloc;
+    mem->base = mem->linear->offset * depth;
+    mem->pool = 1;
+    mem->pScrn = pScrn;
+    return Success;
+}
+
+int
+VIAAllocLinear(VIAMemPtr mem, ScrnInfoPtr pScrn, unsigned long size)
+{
+#ifdef XF86DRI
+    VIAPtr pVia = VIAPTR(pScrn);
+    int ret;
+
+    if (mem->pool)
+        ErrorF("VIA Double Alloc.\n");
+
+    if (pVia->directRenderingType == DRI_1) {
+        mem->pScrn = pScrn;
+        mem->drm_fd = pVia->drmFD;
+        mem->drm.context = DRIGetContext(pScrn->pScreen);
+        mem->drm.size = size;
+        mem->drm.type = VIA_MEM_VIDEO;
+        ret = drmCommandWriteRead(mem->drm_fd, DRM_VIA_ALLOCMEM,
+                                  &mem->drm, sizeof(drm_via_mem_t));
+        if (ret || (size != mem->drm.size)) {
+            /* Try X Offsceen fallback before failing. */
+            if (Success == viaOffScreenLinear(mem, pScrn, size))
+                return Success;
+            ErrorF("DRM memory allocation failed\n");
+            return BadAlloc;
+        }
+
+        mem->base = mem->drm.offset;
+        mem->pool = 2;
+        DEBUG(ErrorF("Fulfilled via DRI at %lu\n", mem->base));
+        return Success;
+    }
+#endif
+    if (Success == viaOffScreenLinear(mem, pScrn, size))
+        return Success;
+    ErrorF("Linear memory allocation failed\n");
+    return BadAlloc;
+}
+
+void
+VIAInitLinear(ScreenPtr pScreen)
+{
+    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+    VIAPtr pVia = VIAPTR(pScrn);
+
+    if (pVia->useEXA && !pVia->NoAccel)
+        return;
+    else
+    {
+        unsigned long offset = (pVia->FBFreeStart + pVia->Bpp - 1) / pVia->Bpp;
+        long size = pVia->FBFreeEnd / pVia->Bpp - offset;
+
+        if (size > 0)
+            xf86InitFBManagerLinear(pScreen, offset, size);
+    }
+}