summaryrefslogtreecommitdiff
path: root/arch/csky/include
diff options
context:
space:
mode:
Diffstat (limited to 'arch/csky/include')
-rw-r--r--arch/csky/include/asm/Kbuild4
-rw-r--r--arch/csky/include/asm/cmpxchg.h31
-rw-r--r--arch/csky/include/asm/jump_label.h47
-rw-r--r--arch/csky/include/asm/pci.h23
-rw-r--r--arch/csky/include/asm/sections.h10
-rw-r--r--arch/csky/include/asm/spinlock.h12
-rw-r--r--arch/csky/include/asm/spinlock_types.h9
-rw-r--r--arch/csky/include/asm/tlb.h15
8 files changed, 107 insertions, 44 deletions
diff --git a/arch/csky/include/asm/Kbuild b/arch/csky/include/asm/Kbuild
index 103207a58f97..1117c28cb7e8 100644
--- a/arch/csky/include/asm/Kbuild
+++ b/arch/csky/include/asm/Kbuild
@@ -3,10 +3,10 @@ generic-y += asm-offsets.h
generic-y += extable.h
generic-y += gpio.h
generic-y += kvm_para.h
-generic-y += spinlock.h
-generic-y += spinlock_types.h
+generic-y += mcs_spinlock.h
generic-y += qrwlock.h
generic-y += qrwlock_types.h
+generic-y += qspinlock.h
generic-y += parport.h
generic-y += user.h
generic-y += vmlinux.lds.h
diff --git a/arch/csky/include/asm/cmpxchg.h b/arch/csky/include/asm/cmpxchg.h
index 5b8faccd65e4..916043b845f1 100644
--- a/arch/csky/include/asm/cmpxchg.h
+++ b/arch/csky/include/asm/cmpxchg.h
@@ -4,10 +4,9 @@
#define __ASM_CSKY_CMPXCHG_H
#ifdef CONFIG_SMP
+#include <linux/bug.h>
#include <asm/barrier.h>
-extern void __bad_xchg(void);
-
#define __xchg_relaxed(new, ptr, size) \
({ \
__typeof__(ptr) __ptr = (ptr); \
@@ -15,6 +14,26 @@ extern void __bad_xchg(void);
__typeof__(*(ptr)) __ret; \
unsigned long tmp; \
switch (size) { \
+ case 2: { \
+ u32 ret; \
+ u32 shif = ((ulong)__ptr & 2) ? 16 : 0; \
+ u32 mask = 0xffff << shif; \
+ __ptr = (__typeof__(ptr))((ulong)__ptr & ~2); \
+ __asm__ __volatile__ ( \
+ "1: ldex.w %0, (%4)\n" \
+ " and %1, %0, %2\n" \
+ " or %1, %1, %3\n" \
+ " stex.w %1, (%4)\n" \
+ " bez %1, 1b\n" \
+ : "=&r" (ret), "=&r" (tmp) \
+ : "r" (~mask), \
+ "r" ((u32)__new << shif), \
+ "r" (__ptr) \
+ : "memory"); \
+ __ret = (__typeof__(*(ptr))) \
+ ((ret & mask) >> shif); \
+ break; \
+ } \
case 4: \
asm volatile ( \
"1: ldex.w %0, (%3) \n" \
@@ -26,7 +45,7 @@ extern void __bad_xchg(void);
:); \
break; \
default: \
- __bad_xchg(); \
+ BUILD_BUG(); \
} \
__ret; \
})
@@ -56,7 +75,7 @@ extern void __bad_xchg(void);
:); \
break; \
default: \
- __bad_xchg(); \
+ BUILD_BUG(); \
} \
__ret; \
})
@@ -87,7 +106,7 @@ extern void __bad_xchg(void);
:); \
break; \
default: \
- __bad_xchg(); \
+ BUILD_BUG(); \
} \
__ret; \
})
@@ -119,7 +138,7 @@ extern void __bad_xchg(void);
:); \
break; \
default: \
- __bad_xchg(); \
+ BUILD_BUG(); \
} \
__ret; \
})
diff --git a/arch/csky/include/asm/jump_label.h b/arch/csky/include/asm/jump_label.h
new file mode 100644
index 000000000000..d488ba6084bc
--- /dev/null
+++ b/arch/csky/include/asm/jump_label.h
@@ -0,0 +1,47 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __ASM_CSKY_JUMP_LABEL_H
+#define __ASM_CSKY_JUMP_LABEL_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+
+#define JUMP_LABEL_NOP_SIZE 4
+
+static __always_inline bool arch_static_branch(struct static_key *key,
+ bool branch)
+{
+ asm_volatile_goto(
+ "1: nop32 \n"
+ " .pushsection __jump_table, \"aw\" \n"
+ " .align 2 \n"
+ " .long 1b - ., %l[label] - . \n"
+ " .long %0 - . \n"
+ " .popsection \n"
+ : : "i"(&((char *)key)[branch]) : : label);
+
+ return false;
+label:
+ return true;
+}
+
+static __always_inline bool arch_static_branch_jump(struct static_key *key,
+ bool branch)
+{
+ asm_volatile_goto(
+ "1: bsr32 %l[label] \n"
+ " .pushsection __jump_table, \"aw\" \n"
+ " .align 2 \n"
+ " .long 1b - ., %l[label] - . \n"
+ " .long %0 - . \n"
+ " .popsection \n"
+ : : "i"(&((char *)key)[branch]) : : label);
+
+ return false;
+label:
+ return true;
+}
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ASM_CSKY_JUMP_LABEL_H */
diff --git a/arch/csky/include/asm/pci.h b/arch/csky/include/asm/pci.h
index ebc765b1f78b..42724c630d30 100644
--- a/arch/csky/include/asm/pci.h
+++ b/arch/csky/include/asm/pci.h
@@ -9,26 +9,7 @@
#include <asm/io.h>
-#define PCIBIOS_MIN_IO 0
-#define PCIBIOS_MIN_MEM 0
-
-/* C-SKY shim does not initialize PCI bus */
-#define pcibios_assign_all_busses() 1
-
-extern int isa_dma_bridge_buggy;
-
-#ifdef CONFIG_PCI
-static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
-{
- /* no legacy IRQ on csky */
- return -ENODEV;
-}
-
-static inline int pci_proc_domain(struct pci_bus *bus)
-{
- /* always show the domain in /proc */
- return 1;
-}
-#endif /* CONFIG_PCI */
+/* Generic PCI */
+#include <asm-generic/pci.h>
#endif /* __ASM_CSKY_PCI_H */
diff --git a/arch/csky/include/asm/sections.h b/arch/csky/include/asm/sections.h
new file mode 100644
index 000000000000..4192cba8445d
--- /dev/null
+++ b/arch/csky/include/asm/sections.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __ASM_SECTIONS_H
+#define __ASM_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+extern char _start[];
+
+#endif /* __ASM_SECTIONS_H */
diff --git a/arch/csky/include/asm/spinlock.h b/arch/csky/include/asm/spinlock.h
new file mode 100644
index 000000000000..83a2005341f5
--- /dev/null
+++ b/arch/csky/include/asm/spinlock.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __ASM_CSKY_SPINLOCK_H
+#define __ASM_CSKY_SPINLOCK_H
+
+#include <asm/qspinlock.h>
+#include <asm/qrwlock.h>
+
+/* See include/linux/spinlock.h */
+#define smp_mb__after_spinlock() smp_mb()
+
+#endif /* __ASM_CSKY_SPINLOCK_H */
diff --git a/arch/csky/include/asm/spinlock_types.h b/arch/csky/include/asm/spinlock_types.h
new file mode 100644
index 000000000000..75bdf3af80ba
--- /dev/null
+++ b/arch/csky/include/asm/spinlock_types.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __ASM_CSKY_SPINLOCK_TYPES_H
+#define __ASM_CSKY_SPINLOCK_TYPES_H
+
+#include <asm-generic/qspinlock_types.h>
+#include <asm-generic/qrwlock_types.h>
+
+#endif /* __ASM_CSKY_SPINLOCK_TYPES_H */
diff --git a/arch/csky/include/asm/tlb.h b/arch/csky/include/asm/tlb.h
index 3498e65f59f8..702861c68874 100644
--- a/arch/csky/include/asm/tlb.h
+++ b/arch/csky/include/asm/tlb.h
@@ -4,21 +4,6 @@
#define __ASM_CSKY_TLB_H
#include <asm/cacheflush.h>
-
-#define tlb_start_vma(tlb, vma) \
- do { \
- if (!(tlb)->fullmm) \
- flush_cache_range(vma, (vma)->vm_start, (vma)->vm_end); \
- } while (0)
-
-#define tlb_end_vma(tlb, vma) \
- do { \
- if (!(tlb)->fullmm) \
- flush_tlb_range(vma, (vma)->vm_start, (vma)->vm_end); \
- } while (0)
-
-#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
-
#include <asm-generic/tlb.h>
#endif /* __ASM_CSKY_TLB_H */
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-10 15:44:02 +0000