dist/drm/drm_scatter.c

60 static void drm_sg_cleanup(struct drm_sg_mem * entry)
65 	for (i = 0; i < entry->pages; i++) {
66 		page = entry->pagelist[i];
71 	vfree(entry->virtual);
73 	kfree(entry->busaddr);
74 	kfree(entry->pagelist);
75 	kfree(entry);
96 	struct drm_sg_mem *entry;
110 	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
111 	if (!entry)
117 	entry->pages = pages;
118 	entry->pagelist = kcalloc(pages, sizeof(*entry->pagelist), GFP_KERNEL);
119 	if (!entry->pagelist) {
120 		kfree(entry);
124 	entry->busaddr = kcalloc(pages, sizeof(*entry->busaddr), GFP_KERNEL);
125 	if (!entry->busaddr) {
126 		kfree(entry->pagelist);
127 		kfree(entry);
131 	entry->virtual = drm_vmalloc_dma(pages << PAGE_SHIFT);
132 	if (!entry->virtual) {
133 		kfree(entry->busaddr);
134 		kfree(entry->pagelist);
135 		kfree(entry);
142 	memset(entry->virtual, 0, pages << PAGE_SHIFT);
144 	entry->handle = ScatterHandle((unsigned long)entry->virtual);
146 	DRM_DEBUG("handle  = %08lx\n", entry->handle);
147 	DRM_DEBUG("virtual = %p\n", entry->virtual);
149 	for (i = (unsigned long)entry->virtual, j = 0; j < pages;
151 		entry->pagelist[j] = vmalloc_to_page((void *)i);
152 		if (!entry->pagelist[j])
154 		SetPageReserved(entry->pagelist[j]);
157 	request->handle = entry->handle;
159 	dev->sg = entry;
171 			tmp = page_address(entry->pagelist[i]);
177 			tmp = (unsigned long *)((u8 *) entry->virtual +
189 			tmp = page_address(entry->pagelist[i]);
204 	drm_sg_cleanup(entry);
212 	struct drm_sg_mem *entry;
220 	entry = dev->sg;
223 	if (!entry || entry->handle != request->handle)
226 	DRM_DEBUG("virtual  = %p\n", entry->virtual);
228 	drm_sg_cleanup(entry);