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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
commit03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch)
treefa581f6dc1c0596391690d1f67eceef3af8246dc /arch/tile/include/asm
parentd4e493caf788ef44982e131ff9c786546904d934 (diff)
Linux-libre 4.5-gnu
Diffstat (limited to 'arch/tile/include/asm')
-rw-r--r--arch/tile/include/asm/barrier.h9
-rw-r--r--arch/tile/include/asm/cmpxchg.h2
-rw-r--r--arch/tile/include/asm/dma-mapping.h32
-rw-r--r--arch/tile/include/asm/insn.h59
-rw-r--r--arch/tile/include/asm/io.h16
-rw-r--r--arch/tile/include/asm/jump_label.h58
-rw-r--r--arch/tile/include/asm/page.h10
-rw-r--r--arch/tile/include/asm/pgtable.h10
-rw-r--r--arch/tile/include/asm/processor.h2
-rw-r--r--arch/tile/include/asm/thread_info.h8
-rw-r--r--arch/tile/include/asm/topology.h3
11 files changed, 148 insertions, 61 deletions
diff --git a/arch/tile/include/asm/barrier.h b/arch/tile/include/asm/barrier.h
index 96a42ae79..d55222806 100644
--- a/arch/tile/include/asm/barrier.h
+++ b/arch/tile/include/asm/barrier.h
@@ -79,11 +79,12 @@ mb_incoherent(void)
* But after the word is updated, the routine issues an "mf" before returning,
* and since it's a function call, we don't even need a compiler barrier.
*/
-#define smp_mb__before_atomic() smp_mb()
-#define smp_mb__after_atomic() do { } while (0)
+#define __smp_mb__before_atomic() __smp_mb()
+#define __smp_mb__after_atomic() do { } while (0)
+#define smp_mb__after_atomic() __smp_mb__after_atomic()
#else /* 64 bit */
-#define smp_mb__before_atomic() smp_mb()
-#define smp_mb__after_atomic() smp_mb()
+#define __smp_mb__before_atomic() __smp_mb()
+#define __smp_mb__after_atomic() __smp_mb()
#endif
#include <asm-generic/barrier.h>
diff --git a/arch/tile/include/asm/cmpxchg.h b/arch/tile/include/asm/cmpxchg.h
index 0ccda3c42..25d589949 100644
--- a/arch/tile/include/asm/cmpxchg.h
+++ b/arch/tile/include/asm/cmpxchg.h
@@ -127,8 +127,6 @@ long long _atomic64_cmpxchg(long long *v, long long o, long long n);
#endif
-#define tas(ptr) xchg((ptr), 1)
-
#endif /* __ASSEMBLY__ */
#endif /* _ASM_TILE_CMPXCHG_H */
diff --git a/arch/tile/include/asm/dma-mapping.h b/arch/tile/include/asm/dma-mapping.h
index 96ac6cce4..01ceb4a89 100644
--- a/arch/tile/include/asm/dma-mapping.h
+++ b/arch/tile/include/asm/dma-mapping.h
@@ -73,37 +73,7 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
}
#define HAVE_ARCH_DMA_SET_MASK 1
-
-#include <asm-generic/dma-mapping-common.h>
-
-static inline int
-dma_set_mask(struct device *dev, u64 mask)
-{
- struct dma_map_ops *dma_ops = get_dma_ops(dev);
-
- /*
- * For PCI devices with 64-bit DMA addressing capability, promote
- * the dma_ops to hybrid, with the consistent memory DMA space limited
- * to 32-bit. For 32-bit capable devices, limit the streaming DMA
- * address range to max_direct_dma_addr.
- */
- if (dma_ops == gx_pci_dma_map_ops ||
- dma_ops == gx_hybrid_pci_dma_map_ops ||
- dma_ops == gx_legacy_pci_dma_map_ops) {
- if (mask == DMA_BIT_MASK(64) &&
- dma_ops == gx_legacy_pci_dma_map_ops)
- set_dma_ops(dev, gx_hybrid_pci_dma_map_ops);
- else if (mask > dev->archdata.max_direct_dma_addr)
- mask = dev->archdata.max_direct_dma_addr;
- }
-
- if (!dev->dma_mask || !dma_supported(dev, mask))
- return -EIO;
-
- *dev->dma_mask = mask;
-
- return 0;
-}
+int dma_set_mask(struct device *dev, u64 mask);
/*
* dma_alloc_noncoherent() is #defined to return coherent memory,
diff --git a/arch/tile/include/asm/insn.h b/arch/tile/include/asm/insn.h
new file mode 100644
index 000000000..f78ba5c16
--- /dev/null
+++ b/arch/tile/include/asm/insn.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2015 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+#ifndef __ASM_TILE_INSN_H
+#define __ASM_TILE_INSN_H
+
+#include <arch/opcode.h>
+
+static inline tilegx_bundle_bits NOP(void)
+{
+ return create_UnaryOpcodeExtension_X0(FNOP_UNARY_OPCODE_X0) |
+ create_RRROpcodeExtension_X0(UNARY_RRR_0_OPCODE_X0) |
+ create_Opcode_X0(RRR_0_OPCODE_X0) |
+ create_UnaryOpcodeExtension_X1(NOP_UNARY_OPCODE_X1) |
+ create_RRROpcodeExtension_X1(UNARY_RRR_0_OPCODE_X1) |
+ create_Opcode_X1(RRR_0_OPCODE_X1);
+}
+
+static inline tilegx_bundle_bits tilegx_gen_branch(unsigned long pc,
+ unsigned long addr,
+ bool link)
+{
+ tilegx_bundle_bits opcode_x0, opcode_x1;
+ long pcrel_by_instr = (addr - pc) >> TILEGX_LOG2_BUNDLE_SIZE_IN_BYTES;
+
+ if (link) {
+ /* opcode: jal addr */
+ opcode_x1 =
+ create_Opcode_X1(JUMP_OPCODE_X1) |
+ create_JumpOpcodeExtension_X1(JAL_JUMP_OPCODE_X1) |
+ create_JumpOff_X1(pcrel_by_instr);
+ } else {
+ /* opcode: j addr */
+ opcode_x1 =
+ create_Opcode_X1(JUMP_OPCODE_X1) |
+ create_JumpOpcodeExtension_X1(J_JUMP_OPCODE_X1) |
+ create_JumpOff_X1(pcrel_by_instr);
+ }
+
+ /* opcode: fnop */
+ opcode_x0 =
+ create_UnaryOpcodeExtension_X0(FNOP_UNARY_OPCODE_X0) |
+ create_RRROpcodeExtension_X0(UNARY_RRR_0_OPCODE_X0) |
+ create_Opcode_X0(RRR_0_OPCODE_X0);
+
+ return opcode_x1 | opcode_x0;
+}
+
+#endif /* __ASM_TILE_INSN_H */
diff --git a/arch/tile/include/asm/io.h b/arch/tile/include/asm/io.h
index 322b5fe94..30f4a210d 100644
--- a/arch/tile/include/asm/io.h
+++ b/arch/tile/include/asm/io.h
@@ -161,14 +161,14 @@ extern void _tile_writew(u16 val, unsigned long addr);
extern void _tile_writel(u32 val, unsigned long addr);
extern void _tile_writeq(u64 val, unsigned long addr);
-#define __raw_readb(addr) _tile_readb((unsigned long)addr)
-#define __raw_readw(addr) _tile_readw((unsigned long)addr)
-#define __raw_readl(addr) _tile_readl((unsigned long)addr)
-#define __raw_readq(addr) _tile_readq((unsigned long)addr)
-#define __raw_writeb(val, addr) _tile_writeb(val, (unsigned long)addr)
-#define __raw_writew(val, addr) _tile_writew(val, (unsigned long)addr)
-#define __raw_writel(val, addr) _tile_writel(val, (unsigned long)addr)
-#define __raw_writeq(val, addr) _tile_writeq(val, (unsigned long)addr)
+#define __raw_readb(addr) _tile_readb((unsigned long)(addr))
+#define __raw_readw(addr) _tile_readw((unsigned long)(addr))
+#define __raw_readl(addr) _tile_readl((unsigned long)(addr))
+#define __raw_readq(addr) _tile_readq((unsigned long)(addr))
+#define __raw_writeb(val, addr) _tile_writeb(val, (unsigned long)(addr))
+#define __raw_writew(val, addr) _tile_writew(val, (unsigned long)(addr))
+#define __raw_writel(val, addr) _tile_writel(val, (unsigned long)(addr))
+#define __raw_writeq(val, addr) _tile_writeq(val, (unsigned long)(addr))
#else /* CONFIG_PCI */
diff --git a/arch/tile/include/asm/jump_label.h b/arch/tile/include/asm/jump_label.h
new file mode 100644
index 000000000..cde7573f3
--- /dev/null
+++ b/arch/tile/include/asm/jump_label.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2015 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _ASM_TILE_JUMP_LABEL_H
+#define _ASM_TILE_JUMP_LABEL_H
+
+#include <arch/opcode.h>
+
+#define JUMP_LABEL_NOP_SIZE TILE_BUNDLE_SIZE_IN_BYTES
+
+static __always_inline bool arch_static_branch(struct static_key *key,
+ bool branch)
+{
+ asm_volatile_goto("1:\n\t"
+ "nop" "\n\t"
+ ".pushsection __jump_table, \"aw\"\n\t"
+ ".quad 1b, %l[l_yes], %0 + %1 \n\t"
+ ".popsection\n\t"
+ : : "i" (key), "i" (branch) : : l_yes);
+ return false;
+l_yes:
+ return true;
+}
+
+static __always_inline bool arch_static_branch_jump(struct static_key *key,
+ bool branch)
+{
+ asm_volatile_goto("1:\n\t"
+ "j %l[l_yes]" "\n\t"
+ ".pushsection __jump_table, \"aw\"\n\t"
+ ".quad 1b, %l[l_yes], %0 + %1 \n\t"
+ ".popsection\n\t"
+ : : "i" (key), "i" (branch) : : l_yes);
+ return false;
+l_yes:
+ return true;
+}
+
+typedef u64 jump_label_t;
+
+struct jump_entry {
+ jump_label_t code;
+ jump_label_t target;
+ jump_label_t key;
+};
+
+#endif /* _ASM_TILE_JUMP_LABEL_H */
diff --git a/arch/tile/include/asm/page.h b/arch/tile/include/asm/page.h
index 8eca6a0e1..498a5f712 100644
--- a/arch/tile/include/asm/page.h
+++ b/arch/tile/include/asm/page.h
@@ -321,6 +321,16 @@ static inline int pfn_valid(unsigned long pfn)
#define virt_to_page(kaddr) pfn_to_page(kaddr_to_pfn((void *)(kaddr)))
#define page_to_virt(page) pfn_to_kaddr(page_to_pfn(page))
+/*
+ * The kernel text is mapped at MEM_SV_START as read-only. To allow
+ * modifying kernel text, it is also mapped at PAGE_OFFSET as read-write.
+ * This macro converts a kernel address to its writable kernel text mapping,
+ * which is used to modify the text code on a running kernel by kgdb,
+ * ftrace, kprobe, jump label, etc.
+ */
+#define ktext_writable_addr(kaddr) \
+ ((unsigned long)(kaddr) - MEM_SV_START + PAGE_OFFSET)
+
struct mm_struct;
extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr);
extern pte_t *virt_to_kpte(unsigned long kaddr);
diff --git a/arch/tile/include/asm/pgtable.h b/arch/tile/include/asm/pgtable.h
index 2b05ccbeb..96cecf555 100644
--- a/arch/tile/include/asm/pgtable.h
+++ b/arch/tile/include/asm/pgtable.h
@@ -489,16 +489,6 @@ static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
#define has_transparent_hugepage() 1
#define pmd_trans_huge pmd_huge_page
-
-static inline pmd_t pmd_mksplitting(pmd_t pmd)
-{
- return pte_pmd(hv_pte_set_client2(pmd_pte(pmd)));
-}
-
-static inline int pmd_trans_splitting(pmd_t pmd)
-{
- return hv_pte_get_client2(pmd_pte(pmd));
-}
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
/*
diff --git a/arch/tile/include/asm/processor.h b/arch/tile/include/asm/processor.h
index 139dfdee0..0684e88aa 100644
--- a/arch/tile/include/asm/processor.h
+++ b/arch/tile/include/asm/processor.h
@@ -212,7 +212,7 @@ static inline void release_thread(struct task_struct *dead_task)
/* Nothing for now */
}
-extern int do_work_pending(struct pt_regs *regs, u32 flags);
+extern void prepare_exit_to_usermode(struct pt_regs *regs, u32 flags);
/*
diff --git a/arch/tile/include/asm/thread_info.h b/arch/tile/include/asm/thread_info.h
index dc1fb28d9..4b7cef9e9 100644
--- a/arch/tile/include/asm/thread_info.h
+++ b/arch/tile/include/asm/thread_info.h
@@ -140,10 +140,14 @@ extern void _cpu_idle(void);
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
#define _TIF_NOHZ (1<<TIF_NOHZ)
+/* Work to do as we loop to exit to user space. */
+#define _TIF_WORK_MASK \
+ (_TIF_SIGPENDING | _TIF_NEED_RESCHED | \
+ _TIF_ASYNC_TLB | _TIF_NOTIFY_RESUME)
+
/* Work to do on any return to user space. */
#define _TIF_ALLWORK_MASK \
- (_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_SINGLESTEP | \
- _TIF_ASYNC_TLB | _TIF_NOTIFY_RESUME | _TIF_NOHZ)
+ (_TIF_WORK_MASK | _TIF_SINGLESTEP | _TIF_NOHZ)
/* Work to do at syscall entry. */
#define _TIF_SYSCALL_ENTRY_WORK \
diff --git a/arch/tile/include/asm/topology.h b/arch/tile/include/asm/topology.h
index 76b0d0ebb..b11d5fcd2 100644
--- a/arch/tile/include/asm/topology.h
+++ b/arch/tile/include/asm/topology.h
@@ -44,9 +44,6 @@ static inline const struct cpumask *cpumask_of_node(int node)
/* For now, use numa node -1 for global allocation. */
#define pcibus_to_node(bus) ((void)(bus), -1)
-/* By definition, we create nodes based on online memory. */
-#define node_has_online_mem(nid) 1
-
#endif /* CONFIG_NUMA */
#include <asm-generic/topology.h>