Page MenuHomeFreeBSD
Files F110743494

D42799.id131773.diff
No OneTemporary
Actions

D42799.id131773.diff
View Options

diff --git a/sys/compat/linuxkpi/common/include/linux/iosys-map.h b/sys/compat/linuxkpi/common/include/linux/iosys-map.h
new file mode 100644
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/iosys-map.h
@@ -0,0 +1,161 @@
+/* Public domain. */
+
+#ifndef _LINUXKPI_LINUX_IOSYS_MAP_H
+#define _LINUXKPI_LINUX_IOSYS_MAP_H
+
+#include <linux/io.h>
+#include <linux/string.h>
+
+struct iosys_map {
+ union {
+ void *vaddr_iomem;
+ void *vaddr;
+ };
+ bool is_iomem;
+#ifdef __OpenBSD__
+ bus_space_handle_t bsh;
+ bus_size_t size;
+#endif
+};
+
+#define IOSYS_MAP_INIT_OFFSET(_ism_src_p, _off) ({ \
+ struct iosys_map ism_dst = *(_ism_src_p); \
+ iosys_map_incr(&ism_dst, _off); \
+ ism_dst; \
+})
+
+static inline void
+iosys_map_incr(struct iosys_map *ism, size_t n)
+{
+ if (ism->is_iomem)
+ ism->vaddr_iomem += n;
+ else
+ ism->vaddr += n;
+}
+
+static inline void
+iosys_map_memcpy_to(struct iosys_map *ism, size_t off, const void *src,
+ size_t len)
+{
+ if (ism->is_iomem)
+ memcpy_toio(ism->vaddr_iomem + off, src, len);
+ else
+ memcpy(ism->vaddr + off, src, len);
+}
+
+static inline bool
+iosys_map_is_null(const struct iosys_map *ism)
+{
+ if (ism->is_iomem)
+ return (ism->vaddr_iomem == NULL);
+ else
+ return (ism->vaddr == NULL);
+}
+
+static inline bool
+iosys_map_is_set(const struct iosys_map *ism)
+{
+ if (ism->is_iomem)
+ return (ism->vaddr_iomem != NULL);
+ else
+ return (ism->vaddr != NULL);
+}
+
+static inline bool
+iosys_map_is_equal(const struct iosys_map *ism_a,
+ const struct iosys_map *ism_b)
+{
+ if (ism_a->is_iomem != ism_b->is_iomem)
+ return (false);
+
+ if (ism_a->is_iomem)
+ return (ism_a->vaddr_iomem == ism_b->vaddr_iomem);
+ else
+ return (ism_a->vaddr == ism_b->vaddr);
+}
+
+static inline void
+iosys_map_clear(struct iosys_map *ism)
+{
+ if (ism->is_iomem) {
+ ism->vaddr_iomem = NULL;
+ ism->is_iomem = false;
+ } else {
+ ism->vaddr = NULL;
+ }
+}
+
+static inline void
+iosys_map_set_vaddr_iomem(struct iosys_map *ism, void *addr)
+{
+ ism->vaddr_iomem = addr;
+ ism->is_iomem = true;
+}
+
+static inline void
+iosys_map_set_vaddr(struct iosys_map *ism, void *addr)
+{
+ ism->vaddr = addr;
+ ism->is_iomem = false;
+}
+
+static inline void
+iosys_map_memset(struct iosys_map *ism, size_t off, int value, size_t len)
+{
+ if (ism->is_iomem)
+ memset_io(ism->vaddr_iomem + off, value, len);
+ else
+ memset(ism->vaddr + off, value, len);
+}
+
+#ifdef __LP64__
+#define _iosys_map_readq(_addr) readq(_addr)
+#define _iosys_map_writeq(_val, _addr) writeq(_val, _addr)
+#else
+#define _iosys_map_readq(_addr) ({ \
+ uint64_t val; \
+ memcpy_fromio(&val, _addr, sizeof(uint64_t)); \
+ val; \
+})
+#define _iosys_map_writeq(_val, _addr) \
+ memcpy_toio(_addr, &(_val), sizeof(uint64_t))
+#endif
+
+#define iosys_map_rd(_ism, _off, _type) ({ \
+ _type val; \
+ if ((_ism)->is_iomem) { \
+ void *addr = (_ism)->vaddr_iomem + (_off); \
+ val = _Generic(val, \
+ uint8_t : readb(addr), \
+ uint16_t: readw(addr), \
+ uint32_t: readl(addr), \
+ uint64_t: _iosys_map_readq(addr)); \
+ } else \
+ val = READ_ONCE(*(_type *)((_ism)->vaddr + (_off))); \
+ val; \
+})
+#define iosys_map_wr(_ism, _off, _type, _val) ({ \
+ _type val = (_val); \
+ if ((_ism)->is_iomem) { \
+ void *addr = (_ism)->vaddr_iomem + (_off); \
+ _Generic(val, \
+ uint8_t : writeb(val, addr), \
+ uint16_t: writew(val, addr), \
+ uint32_t: writel(val, addr), \
+ uint64_t: _iosys_map_writeq(val, addr)); \
+ } else \
+ WRITE_ONCE(*(_type *)((_ism)->vaddr + (_off)), val); \
+})
+
+#define iosys_map_rd_field(_ism, _off, _type, _field) ({ \
+ _type *s; \
+ iosys_map_rd(_ism, (_off) + offsetof(_type, _field), \
+ __typeof(s->_field)); \
+})
+#define iosys_map_wr_field(_ism, _off, _type, _field, _val) ({ \
+ _type *s; \
+ iosys_map_wr(_ism, (_off) + offsetof(_type, _field), \
+ __typeof(s->_field), _val); \
+})
+
+#endif

File Metadata

Mime Type
text/plain
Expires
Sun, Feb 23, 1:51 PM (4 h, 32 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
16798278
Default Alt Text
D42799.id131773.diff (3 KB)

Event Timeline