}
}
+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|__GFP_COMP, 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) {
void *pt;
return pt;
}
-#if 0
void *drm_ioremap_nocache (unsigned long offset, unsigned long size,
drm_device_t * dev) {
void *pt;
spin_unlock(&drm_mem_lock);
return pt;
}
-#endif /* 0 */
void drm_ioremapfree (void *pt, unsigned long size, drm_device_t * dev) {
int alloc_count;