Remove unnecessary PowerVR helper functions

The cross-process memory sharing code never really worked in the
way we needed it to - so remove it until something better comes along.

Reviewed-by: trustme

Back port of 04648b44f0784223122a782320d0b09b5c1e9497

2 files changed, 0 insertions, 75 deletions

diff --git a/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.c b/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.c
index c1b655a..17345a9 100644
--- a/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.c
+++ b/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.c
@@ -828,63 +828,3 @@ void pvrQwsSetSwapFunction
     drawable->swapFunction = func;
     drawable->userData = userData;
 }
-
-unsigned long pvrQwsGetMemoryId(PvrQwsDrawable *drawable)
-{
-    unsigned long addr;
-    unsigned long start;
-    unsigned long end;
-    unsigned long off;
-    unsigned long offset;
-    FILE *file;
-    char buffer[BUFSIZ];
-    char flags[16];
-
-    if (!drawable->backBuffersValid)
-        return 0;
-    addr = (unsigned long)
-        (drawable->backBuffers[drawable->currentBackBuffer]->pBase);
-
-    /* Search /proc/self/maps for the memory region that contains "addr".
-       The file offset for that memory region is the identifier we need */
-    file = fopen("/proc/self/maps", "r");
-    if (!file) {
-        perror("/proc/self/maps");
-        return 0;
-    }
-    offset = 0;
-    while (fgets(buffer, sizeof(buffer), file)) {
-        if (sscanf(buffer, "%lx-%lx %s %lx",
-                   &start, &end, flags, &off) < 4)
-            continue;
-        if (start <= addr && addr < end) {
-            offset = off;
-            break;
-        }
-    }
-    fclose(file);
-    return offset;
-}
-
-void *pvrQwsMapMemory(unsigned long id, int size)
-{
-    void *addr;
-    int fd = open("/dev/pvrsrv", O_RDWR, 0);
-    if (fd < 0) {
-        perror("/dev/pvrsrv");
-        return 0;
-    }
-    addr = mmap(0, (size_t)size, PROT_READ | PROT_WRITE,
-                MAP_SHARED, fd, (off_t)id);
-    if (addr == (void *)(-1)) {
-        perror("mmap pvr memory region");
-        addr = 0;
-    }
-    close(fd);
-    return addr;
-}
-
-void pvrQwsUnmapMemory(void *addr, int size)
-{
-    munmap(addr, size);
-}
diff --git a/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.h b/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.h
index b9e035f..55e0310 100644
--- a/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.h
+++ b/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.h
@@ -162,21 +162,6 @@ int pvrQwsSwapBuffers(PvrQwsDrawable *drawable, int repaintOnly);
 void pvrQwsSetSwapFunction
     (PvrQwsDrawable *drawable, PvrQwsSwapFunction func, void *userData);
 
-/* Get a memory identifier for the indicated drawable's buffer.
-   The identifier can be passed to another process and then
-   passed to pvrQwsMapMemory() to map the drawable's buffer into
-   the other process's address space.  Returns zero if the
-   memory identifier could not be determined.  This should only
-   be used for pixmap drawables */
-unsigned long pvrQwsGetMemoryId(PvrQwsDrawable *drawable);
-
-/* Map the memory buffer of a foreign application's drawable, as
-   indicated by "id" and "size".  Returns null if the map failed */
-void *pvrQwsMapMemory(unsigned long id, int size);
-
-/* Unmap the memory obtained from pvrQwsMapMemory() */
-void pvrQwsUnmapMemory(void *addr, int size);
-
 #ifdef __cplusplus
 };
 #endif