summaryrefslogtreecommitdiff
path: root/include/asm-generic
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-generic')
-rw-r--r--include/asm-generic/bug.h20
-rw-r--r--include/asm-generic/dma-coherent.h1
-rw-r--r--include/asm-generic/dma-contiguous.h2
-rw-r--r--include/asm-generic/dma-mapping-common.h55
-rw-r--r--include/asm-generic/kmap_types.h34
-rw-r--r--include/asm-generic/pgtable.h10
-rw-r--r--include/asm-generic/sizes.h49
-rw-r--r--include/asm-generic/tlb.h5
8 files changed, 86 insertions, 90 deletions
diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index 2520a6e241dc..7d10f962aa13 100644
--- a/include/asm-generic/bug.h
+++ b/include/asm-generic/bug.h
@@ -3,10 +3,18 @@
#include <linux/compiler.h>
+#ifdef CONFIG_GENERIC_BUG
+#define BUGFLAG_WARNING (1 << 0)
+#define BUGFLAG_TAINT(taint) (BUGFLAG_WARNING | ((taint) << 8))
+#define BUG_GET_TAINT(bug) ((bug)->flags >> 8)
+#endif
+
+#ifndef __ASSEMBLY__
+#include <linux/kernel.h>
+
#ifdef CONFIG_BUG
#ifdef CONFIG_GENERIC_BUG
-#ifndef __ASSEMBLY__
struct bug_entry {
#ifndef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
unsigned long bug_addr;
@@ -23,12 +31,6 @@ struct bug_entry {
#endif
unsigned short flags;
};
-#endif /* __ASSEMBLY__ */
-
-#define BUGFLAG_WARNING (1 << 0)
-#define BUGFLAG_TAINT(taint) (BUGFLAG_WARNING | ((taint) << 8))
-#define BUG_GET_TAINT(bug) ((bug)->flags >> 8)
-
#endif /* CONFIG_GENERIC_BUG */
/*
@@ -60,7 +62,6 @@ struct bug_entry {
* to provide better diagnostics.
*/
#ifndef __WARN_TAINT
-#ifndef __ASSEMBLY__
extern __printf(3, 4)
void warn_slowpath_fmt(const char *file, const int line,
const char *fmt, ...);
@@ -69,7 +70,6 @@ void warn_slowpath_fmt_taint(const char *file, const int line, unsigned taint,
const char *fmt, ...);
extern void warn_slowpath_null(const char *file, const int line);
#define WANT_WARN_ON_SLOWPATH
-#endif
#define __WARN() warn_slowpath_null(__FILE__, __LINE__)
#define __WARN_printf(arg...) warn_slowpath_fmt(__FILE__, __LINE__, arg)
#define __WARN_printf_taint(taint, arg...) \
@@ -202,4 +202,6 @@ extern void warn_slowpath_null(const char *file, const int line);
# define WARN_ON_SMP(x) ({0;})
#endif
+#endif /* __ASSEMBLY__ */
+
#endif
diff --git a/include/asm-generic/dma-coherent.h b/include/asm-generic/dma-coherent.h
index abfb2682de7f..2be8a2dbc868 100644
--- a/include/asm-generic/dma-coherent.h
+++ b/include/asm-generic/dma-coherent.h
@@ -29,6 +29,7 @@ dma_mark_declared_memory_occupied(struct device *dev,
#else
#define dma_alloc_from_coherent(dev, size, handle, ret) (0)
#define dma_release_from_coherent(dev, order, vaddr) (0)
+#define dma_mmap_from_coherent(dev, vma, vaddr, order, ret) (0)
#endif
#endif
diff --git a/include/asm-generic/dma-contiguous.h b/include/asm-generic/dma-contiguous.h
index c544356b374b..294b1e755ab2 100644
--- a/include/asm-generic/dma-contiguous.h
+++ b/include/asm-generic/dma-contiguous.h
@@ -18,7 +18,7 @@ static inline void dev_set_cma_area(struct device *dev, struct cma *cma)
{
if (dev)
dev->cma_area = cma;
- if (!dev || !dma_contiguous_default_area)
+ if (!dev && !dma_contiguous_default_area)
dma_contiguous_default_area = cma;
}
diff --git a/include/asm-generic/dma-mapping-common.h b/include/asm-generic/dma-mapping-common.h
index 2e248d8924dc..de8bf89940f8 100644
--- a/include/asm-generic/dma-mapping-common.h
+++ b/include/asm-generic/dma-mapping-common.h
@@ -176,4 +176,59 @@ dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
#define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, NULL)
#define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, NULL)
+extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma,
+ void *cpu_addr, dma_addr_t dma_addr, size_t size);
+
+/**
+ * dma_mmap_attrs - map a coherent DMA allocation into user space
+ * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
+ * @vma: vm_area_struct describing requested user mapping
+ * @cpu_addr: kernel CPU-view address returned from dma_alloc_attrs
+ * @handle: device-view address returned from dma_alloc_attrs
+ * @size: size of memory originally requested in dma_alloc_attrs
+ * @attrs: attributes of mapping properties requested in dma_alloc_attrs
+ *
+ * Map a coherent DMA buffer previously allocated by dma_alloc_attrs
+ * into user space. The coherent DMA buffer must not be freed by the
+ * driver until the user space mapping has been released.
+ */
+static inline int
+dma_mmap_attrs(struct device *dev, struct vm_area_struct *vma, void *cpu_addr,
+ dma_addr_t dma_addr, size_t size, struct dma_attrs *attrs)
+{
+ struct dma_map_ops *ops = get_dma_ops(dev);
+ BUG_ON(!ops);
+ if (ops->mmap)
+ return ops->mmap(dev, vma, cpu_addr, dma_addr, size, attrs);
+ return dma_common_mmap(dev, vma, cpu_addr, dma_addr, size);
+}
+
+#define dma_mmap_coherent(d, v, c, h, s) dma_mmap_attrs(d, v, c, h, s, NULL)
+
+static inline int dma_mmap_writecombine(struct device *dev, struct vm_area_struct *vma,
+ void *cpu_addr, dma_addr_t dma_addr, size_t size)
+{
+ DEFINE_DMA_ATTRS(attrs);
+ dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
+ return dma_mmap_attrs(dev, vma, cpu_addr, dma_addr, size, &attrs);
+}
+
+int
+dma_common_get_sgtable(struct device *dev, struct sg_table *sgt,
+ void *cpu_addr, dma_addr_t dma_addr, size_t size);
+
+static inline int
+dma_get_sgtable_attrs(struct device *dev, struct sg_table *sgt, void *cpu_addr,
+ dma_addr_t dma_addr, size_t size, struct dma_attrs *attrs)
+{
+ struct dma_map_ops *ops = get_dma_ops(dev);
+ BUG_ON(!ops);
+ if (ops->get_sgtable)
+ return ops->get_sgtable(dev, sgt, cpu_addr, dma_addr, size,
+ attrs);
+ return dma_common_get_sgtable(dev, sgt, cpu_addr, dma_addr, size);
+}
+
+#define dma_get_sgtable(d, t, v, h, s) dma_get_sgtable_attrs(d, t, v, h, s, NULL)
+
#endif
diff --git a/include/asm-generic/kmap_types.h b/include/asm-generic/kmap_types.h
index 0232ccb76f2b..90f99c74dd38 100644
--- a/include/asm-generic/kmap_types.h
+++ b/include/asm-generic/kmap_types.h
@@ -2,39 +2,9 @@
#define _ASM_GENERIC_KMAP_TYPES_H
#ifdef __WITH_KM_FENCE
-# define KMAP_D(n) __KM_FENCE_##n ,
+# define KM_TYPE_NR 41
#else
-# define KMAP_D(n)
+# define KM_TYPE_NR 20
#endif
-enum km_type {
-KMAP_D(0) KM_BOUNCE_READ,
-KMAP_D(1) KM_SKB_SUNRPC_DATA,
-KMAP_D(2) KM_SKB_DATA_SOFTIRQ,
-KMAP_D(3) KM_USER0,
-KMAP_D(4) KM_USER1,
-KMAP_D(5) KM_BIO_SRC_IRQ,
-KMAP_D(6) KM_BIO_DST_IRQ,
-KMAP_D(7) KM_PTE0,
-KMAP_D(8) KM_PTE1,
-KMAP_D(9) KM_IRQ0,
-KMAP_D(10) KM_IRQ1,
-KMAP_D(11) KM_SOFTIRQ0,
-KMAP_D(12) KM_SOFTIRQ1,
-KMAP_D(13) KM_SYNC_ICACHE,
-KMAP_D(14) KM_SYNC_DCACHE,
-/* UML specific, for copy_*_user - used in do_op_one_page */
-KMAP_D(15) KM_UML_USERCOPY,
-KMAP_D(16) KM_IRQ_PTE,
-KMAP_D(17) KM_NMI,
-KMAP_D(18) KM_NMI_PTE,
-KMAP_D(19) KM_KDB,
-/*
- * Remember to update debug_kmap_atomic() when adding new kmap types!
- */
-KMAP_D(20) KM_TYPE_NR
-};
-
-#undef KMAP_D
-
#endif
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 6f2b45a9b6bc..ff4947b7a976 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -484,6 +484,16 @@ static inline int pmd_none_or_trans_huge_or_clear_bad(pmd_t *pmd)
/*
* The barrier will stabilize the pmdval in a register or on
* the stack so that it will stop changing under the code.
+ *
+ * When CONFIG_TRANSPARENT_HUGEPAGE=y on x86 32bit PAE,
+ * pmd_read_atomic is allowed to return a not atomic pmdval
+ * (for example pointing to an hugepage that has never been
+ * mapped in the pmd). The below checks will only care about
+ * the low part of the pmd with 32bit PAE x86 anyway, with the
+ * exception of pmd_none(). So the important thing is that if
+ * the low part of the pmd is found null, the high part will
+ * be also null or the pmd_none() check below would be
+ * confused.
*/
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
barrier();
diff --git a/include/asm-generic/sizes.h b/include/asm-generic/sizes.h
index ea5d4ef81061..1dcfad9629ef 100644
--- a/include/asm-generic/sizes.h
+++ b/include/asm-generic/sizes.h
@@ -1,47 +1,2 @@
-/*
- * linux/include/asm-generic/sizes.h
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#ifndef __ASM_GENERIC_SIZES_H__
-#define __ASM_GENERIC_SIZES_H__
-
-#define SZ_1 0x00000001
-#define SZ_2 0x00000002
-#define SZ_4 0x00000004
-#define SZ_8 0x00000008
-#define SZ_16 0x00000010
-#define SZ_32 0x00000020
-#define SZ_64 0x00000040
-#define SZ_128 0x00000080
-#define SZ_256 0x00000100
-#define SZ_512 0x00000200
-
-#define SZ_1K 0x00000400
-#define SZ_2K 0x00000800
-#define SZ_4K 0x00001000
-#define SZ_8K 0x00002000
-#define SZ_16K 0x00004000
-#define SZ_32K 0x00008000
-#define SZ_64K 0x00010000
-#define SZ_128K 0x00020000
-#define SZ_256K 0x00040000
-#define SZ_512K 0x00080000
-
-#define SZ_1M 0x00100000
-#define SZ_2M 0x00200000
-#define SZ_4M 0x00400000
-#define SZ_8M 0x00800000
-#define SZ_16M 0x01000000
-#define SZ_32M 0x02000000
-#define SZ_64M 0x04000000
-#define SZ_128M 0x08000000
-#define SZ_256M 0x10000000
-#define SZ_512M 0x20000000
-
-#define SZ_1G 0x40000000
-#define SZ_2G 0x80000000
-
-#endif /* __ASM_GENERIC_SIZES_H__ */
+/* This is a placeholder, to be removed over time */
+#include <linux/sizes.h>
diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h
index f96a5b58a975..ed6642ad03e0 100644
--- a/include/asm-generic/tlb.h
+++ b/include/asm-generic/tlb.h
@@ -86,6 +86,8 @@ struct mmu_gather {
#ifdef CONFIG_HAVE_RCU_TABLE_FREE
struct mmu_table_batch *batch;
#endif
+ unsigned long start;
+ unsigned long end;
unsigned int need_flush : 1, /* Did free PTEs */
fast_mode : 1; /* No batching */
@@ -113,7 +115,8 @@ static inline int tlb_fast_mode(struct mmu_gather *tlb)
void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, bool fullmm);
void tlb_flush_mmu(struct mmu_gather *tlb);
-void tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end);
+void tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start,
+ unsigned long end);
int __tlb_remove_page(struct mmu_gather *tlb, struct page *page);
/* tlb_remove_page
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-08 23:07:54 +0300