From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/arch/xtensa/include/asm/spinlock.h | 185 ---------------------------------------------
1 files changed, 3 insertions(+), 182 deletions(-)
diff --git a/kernel/arch/xtensa/include/asm/spinlock.h b/kernel/arch/xtensa/include/asm/spinlock.h
index c6e1290..584b0de 100644
--- a/kernel/arch/xtensa/include/asm/spinlock.h
+++ b/kernel/arch/xtensa/include/asm/spinlock.h
@@ -12,188 +12,9 @@
#define _XTENSA_SPINLOCK_H
#include <asm/barrier.h>
-#include <asm/processor.h>
+#include <asm/qrwlock.h>
+#include <asm/qspinlock.h>
-/*
- * spinlock
- *
- * There is at most one owner of a spinlock. There are not different
- * types of spinlock owners like there are for rwlocks (see below).
- *
- * When trying to obtain a spinlock, the function "spins" forever, or busy-
- * waits, until the lock is obtained. When spinning, presumably some other
- * owner will soon give up the spinlock making it available to others. Use
- * the trylock functions to avoid spinning forever.
- *
- * possible values:
- *
- * 0 nobody owns the spinlock
- * 1 somebody owns the spinlock
- */
-
-#define arch_spin_is_locked(x) ((x)->slock != 0)
-
-static inline void arch_spin_lock(arch_spinlock_t *lock)
-{
- unsigned long tmp;
-
- __asm__ __volatile__(
- " movi %0, 0\n"
- " wsr %0, scompare1\n"
- "1: movi %0, 1\n"
- " s32c1i %0, %1, 0\n"
- " bnez %0, 1b\n"
- : "=&a" (tmp)
- : "a" (&lock->slock)
- : "memory");
-}
-
-/* Returns 1 if the lock is obtained, 0 otherwise. */
-
-static inline int arch_spin_trylock(arch_spinlock_t *lock)
-{
- unsigned long tmp;
-
- __asm__ __volatile__(
- " movi %0, 0\n"
- " wsr %0, scompare1\n"
- " movi %0, 1\n"
- " s32c1i %0, %1, 0\n"
- : "=&a" (tmp)
- : "a" (&lock->slock)
- : "memory");
-
- return tmp == 0 ? 1 : 0;
-}
-
-static inline void arch_spin_unlock(arch_spinlock_t *lock)
-{
- unsigned long tmp;
-
- __asm__ __volatile__(
- " movi %0, 0\n"
- " s32ri %0, %1, 0\n"
- : "=&a" (tmp)
- : "a" (&lock->slock)
- : "memory");
-}
-
-/*
- * rwlock
- *
- * Read-write locks are really a more flexible spinlock. They allow
- * multiple readers but only one writer. Write ownership is exclusive
- * (i.e., all other readers and writers are blocked from ownership while
- * there is a write owner). These rwlocks are unfair to writers. Writers
- * can be starved for an indefinite time by readers.
- *
- * possible values:
- *
- * 0 nobody owns the rwlock
- * >0 one or more readers own the rwlock
- * (the positive value is the actual number of readers)
- * 0x80000000 one writer owns the rwlock, no other writers, no readers
- */
-
-static inline void arch_write_lock(arch_rwlock_t *rw)
-{
- unsigned long tmp;
-
- __asm__ __volatile__(
- " movi %0, 0\n"
- " wsr %0, scompare1\n"
- "1: movi %0, 1\n"
- " slli %0, %0, 31\n"
- " s32c1i %0, %1, 0\n"
- " bnez %0, 1b\n"
- : "=&a" (tmp)
- : "a" (&rw->lock)
- : "memory");
-}
-
-/* Returns 1 if the lock is obtained, 0 otherwise. */
-
-static inline int arch_write_trylock(arch_rwlock_t *rw)
-{
- unsigned long tmp;
-
- __asm__ __volatile__(
- " movi %0, 0\n"
- " wsr %0, scompare1\n"
- " movi %0, 1\n"
- " slli %0, %0, 31\n"
- " s32c1i %0, %1, 0\n"
- : "=&a" (tmp)
- : "a" (&rw->lock)
- : "memory");
-
- return tmp == 0 ? 1 : 0;
-}
-
-static inline void arch_write_unlock(arch_rwlock_t *rw)
-{
- unsigned long tmp;
-
- __asm__ __volatile__(
- " movi %0, 0\n"
- " s32ri %0, %1, 0\n"
- : "=&a" (tmp)
- : "a" (&rw->lock)
- : "memory");
-}
-
-static inline void arch_read_lock(arch_rwlock_t *rw)
-{
- unsigned long tmp;
- unsigned long result;
-
- __asm__ __volatile__(
- "1: l32i %1, %2, 0\n"
- " bltz %1, 1b\n"
- " wsr %1, scompare1\n"
- " addi %0, %1, 1\n"
- " s32c1i %0, %2, 0\n"
- " bne %0, %1, 1b\n"
- : "=&a" (result), "=&a" (tmp)
- : "a" (&rw->lock)
- : "memory");
-}
-
-/* Returns 1 if the lock is obtained, 0 otherwise. */
-
-static inline int arch_read_trylock(arch_rwlock_t *rw)
-{
- unsigned long result;
- unsigned long tmp;
-
- __asm__ __volatile__(
- " l32i %1, %2, 0\n"
- " addi %0, %1, 1\n"
- " bltz %0, 1f\n"
- " wsr %1, scompare1\n"
- " s32c1i %0, %2, 0\n"
- " sub %0, %0, %1\n"
- "1:\n"
- : "=&a" (result), "=&a" (tmp)
- : "a" (&rw->lock)
- : "memory");
-
- return result == 0;
-}
-
-static inline void arch_read_unlock(arch_rwlock_t *rw)
-{
- unsigned long tmp1, tmp2;
-
- __asm__ __volatile__(
- "1: l32i %1, %2, 0\n"
- " addi %0, %1, -1\n"
- " wsr %1, scompare1\n"
- " s32c1i %0, %2, 0\n"
- " bne %0, %1, 1b\n"
- : "=&a" (tmp1), "=&a" (tmp2)
- : "a" (&rw->lock)
- : "memory");
-}
+#define smp_mb__after_spinlock() smp_mb()
#endif /* _XTENSA_SPINLOCK_H */
--
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