int self_id_errors;
- /* Tasklets for iso receive and transmit, used by video1394,
- * amdtp and dv1394 */
+ /* Tasklets for iso receive and transmit, used by video1394
+ * and dv1394 */
struct list_head iso_tasklet_list;
spinlock_t iso_tasklet_list_lock;
static inline int cross_bound(unsigned long addr, unsigned int size)
{
+ if (size == 0)
+ return 0;
+
if (size > PAGE_SIZE)
return 1;
#define OHCI1394_TCODE_PHY 0xE
+/* Node offset map (phys DMA area, posted write area).
+ * The value of OHCI1394_PHYS_UPPER_BOUND_PROGRAMMED may be modified but must
+ * be lower than OHCI1394_MIDDLE_ADDRESS_SPACE.
+ * OHCI1394_PHYS_UPPER_BOUND_FIXED and OHCI1394_MIDDLE_ADDRESS_SPACE are
+ * constants given by the OHCI spec.
+ */
+#define OHCI1394_PHYS_UPPER_BOUND_FIXED 0x000100000000ULL /* 4 GB */
+#define OHCI1394_PHYS_UPPER_BOUND_PROGRAMMED 0x010000000000ULL /* 1 TB */
+#define OHCI1394_MIDDLE_ADDRESS_SPACE 0xffff00000000ULL
+
void ohci1394_init_iso_tasklet(struct ohci1394_iso_tasklet *tasklet,
int type,
void (*func)(unsigned long),