#include <linux/cache.h>
#include <linux/hardirq.h>
+#include <linux/mutex.h>
#include <asm/sn/types.h>
#include <asm/sn/bte.h>
* the bte_copy() once in the hope that the failure was due to a temporary
* aberration (i.e., the link going down temporarily).
*
- * See bte_copy for definition of the input parameters.
+ * src - physical address of the source of the transfer.
+ * vdst - virtual address of the destination of the transfer.
+ * len - number of bytes to transfer from source to destination.
+ * mode - see bte_copy() for definition.
+ * notification - see bte_copy() for definition.
*
* Note: xp_bte_copy() should never be called while holding a spinlock.
*/
static inline bte_result_t
-xp_bte_copy(u64 src, u64 dest, u64 len, u64 mode, void *notification)
+xp_bte_copy(u64 src, u64 vdst, u64 len, u64 mode, void *notification)
{
bte_result_t ret;
+ u64 pdst = ia64_tpa(vdst);
- ret = bte_copy(src, dest, len, mode, notification);
+ /*
+ * Ensure that the physically mapped memory is contiguous.
+ *
+ * We do this by ensuring that the memory is from region 7 only.
+ * If the need should arise to use memory from one of the other
+ * regions, then modify the BUG_ON() statement to ensure that the
+ * memory from that region is always physically contiguous.
+ */
+ BUG_ON(REGION_NUMBER(vdst) != RGN_KERNEL);
+ ret = bte_copy(src, pdst, len, mode, notification);
if (ret != BTE_SUCCESS) {
if (!in_interrupt()) {
cond_resched();
}
- ret = bte_copy(src, dest, len, mode, notification);
+ ret = bte_copy(src, pdst, len, mode, notification);
}
return ret;
xpcOpenCloseError, /* 50: channel open/close protocol error */
- xpcUnknownReason /* 51: unknown reason -- must be last in list */
+ xpcDisconnected, /* 51: channel disconnected (closed) */
+
+ xpcUnknownReason /* 52: unknown reason -- must be last in list */
};
* the channel.
*/
struct xpc_registration {
- struct semaphore sema;
+ struct mutex mutex;
xpc_channel_func func; /* function to call */
void *key; /* pointer to user's key */
u16 nentries; /* #of msg entries in local msg queue */