Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/arch/parisc/include/asm/spinlock_types.h b/arch/parisc/include/asm/spinlock_types.h
new file mode 100644
index 000000000..7b986b09d
--- /dev/null
+++ b/arch/parisc/include/asm/spinlock_types.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_SPINLOCK_TYPES_H
+#define __ASM_SPINLOCK_TYPES_H
+
+#define __ARCH_SPIN_LOCK_UNLOCKED_VAL	0x1a46
+
+#define SPINLOCK_BREAK_INSN	0x0000c006	/* break 6,6 */
+
+#ifndef __ASSEMBLY__
+
+typedef struct {
+	volatile unsigned int lock[4];
+# define __ARCH_SPIN_LOCK_UNLOCKED	\
+	{ { __ARCH_SPIN_LOCK_UNLOCKED_VAL, __ARCH_SPIN_LOCK_UNLOCKED_VAL, \
+	    __ARCH_SPIN_LOCK_UNLOCKED_VAL, __ARCH_SPIN_LOCK_UNLOCKED_VAL } }
+} arch_spinlock_t;
+
+
+/* counter:
+ * Unlocked     : 0x0100_0000
+ * Read lock(s) : 0x00FF_FFFF to 0x01  (Multiple Readers decrement it)
+ * Write lock   : 0x0, but only if prior value is "unlocked" 0x0100_0000
+ */
+typedef struct {
+	arch_spinlock_t		lock_mutex;
+	volatile unsigned int	counter;
+} arch_rwlock_t;
+
+#endif /* __ASSEMBLY__ */
+
+#define __ARCH_RW_LOCK_UNLOCKED__       0x01000000
+#define __ARCH_RW_LOCK_UNLOCKED         { .lock_mutex = __ARCH_SPIN_LOCK_UNLOCKED, \
+					.counter = __ARCH_RW_LOCK_UNLOCKED__ }
+
+#endif