-unsigned long DRM(alloc_pages)(int order, int area)
-{
- unsigned long address;
- unsigned long bytes = PAGE_SIZE << order;
- unsigned long addr;
- unsigned int sz;
-
- spin_lock(&DRM(mem_lock));
- if ((DRM(ram_used) >> PAGE_SHIFT)
- > (DRM_RAM_PERCENT * DRM(ram_available)) / 100) {
- spin_unlock(&DRM(mem_lock));
- return 0;
- }
- spin_unlock(&DRM(mem_lock));
-
- address = __get_free_pages(GFP_KERNEL, order);
- if (!address) {
- spin_lock(&DRM(mem_lock));
- ++DRM(mem_stats)[area].fail_count;
- spin_unlock(&DRM(mem_lock));
- return 0;
- }
- spin_lock(&DRM(mem_lock));
- ++DRM(mem_stats)[area].succeed_count;
- DRM(mem_stats)[area].bytes_allocated += bytes;
- DRM(ram_used) += bytes;
- spin_unlock(&DRM(mem_lock));
-
-
- /* Zero outside the lock */
- memset((void *)address, 0, bytes);
-
- /* Reserve */
- for (addr = address, sz = bytes;
- sz > 0;
- addr += PAGE_SIZE, sz -= PAGE_SIZE) {
- SetPageReserved(virt_to_page(addr));
- }
-
- return address;
-}
-
-void DRM(free_pages)(unsigned long address, int order, int area)
-{
- unsigned long bytes = PAGE_SIZE << order;
- int alloc_count;
- int free_count;
- unsigned long addr;
- unsigned int sz;
-
- if (!address) {
- DRM_MEM_ERROR(area, "Attempt to free address 0\n");
- } else {
- /* Unreserve */
- for (addr = address, sz = bytes;
- sz > 0;
- addr += PAGE_SIZE, sz -= PAGE_SIZE) {
- ClearPageReserved(virt_to_page(addr));
- }
- free_pages(address, order);
- }
-
- spin_lock(&DRM(mem_lock));
- free_count = ++DRM(mem_stats)[area].free_count;
- alloc_count = DRM(mem_stats)[area].succeed_count;
- DRM(mem_stats)[area].bytes_freed += bytes;
- DRM(ram_used) -= bytes;
- spin_unlock(&DRM(mem_lock));
- if (free_count > alloc_count) {
- DRM_MEM_ERROR(area,
- "Excess frees: %d frees, %d allocs\n",
- free_count, alloc_count);
- }
-}
-
-void *DRM(ioremap)(unsigned long offset, unsigned long size, drm_device_t *dev)
-{