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author | tmm <tmm@FreeBSD.org> | 2002-02-27 17:16:18 +0000 |
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committer | tmm <tmm@FreeBSD.org> | 2002-02-27 17:16:18 +0000 |
commit | 3ed05b7b8966710c5cffbf0ba479dd2e07c91c0a (patch) | |
tree | 46353f300fd15b6b132ccde617d8726a2e38d224 /sys/i386/include/bus.h | |
parent | e9d577adb2ffdd3b7300415775c1212a087ce0dc (diff) | |
download | FreeBSD-src-3ed05b7b8966710c5cffbf0ba479dd2e07c91c0a.zip FreeBSD-src-3ed05b7b8966710c5cffbf0ba479dd2e07c91c0a.tar.gz |
Add the following functions/macros to support byte order conversions and
device drivers for bus system with other endinesses than the CPU (using
interfaces compatible to NetBSD):
- bwap16() and bswap32(). These have optimized implementations on some
architectures; for those that don't, there exist generic implementations.
- macros to convert from a certain byte order to host byte order and vice
versa, using a naming scheme like le16toh(), htole16().
These are implemented using the bswap functions.
- stream bus space access functions, which do not perform a byte order
conversion (while the normal access functions would if the bus endianess
differs from the CPU endianess).
htons(), htonl(), ntohs() and ntohl() are implemented using the new
functions above for kernel usage. None of the above interfaces is currently
exported to user land.
Make use of the new functions in a few places where local implementations
of the same functionality existed.
Reviewed by: mike, bde
Tested on alpha by: mike
Diffstat (limited to 'sys/i386/include/bus.h')
-rw-r--r-- | sys/i386/include/bus.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/sys/i386/include/bus.h b/sys/i386/include/bus.h index 33d4162..a33569f 100644 --- a/sys/i386/include/bus.h +++ b/sys/i386/include/bus.h @@ -43,4 +43,68 @@ #endif #include <machine/bus_dma.h> +/* + * Stream accesses are the same as normal accesses on i386/pc98; there are no + * supported bus systems with an endianess different from the host one. + */ +#define bus_space_read_stream_1(t, h, o) bus_space_read_1((t), (h), (o)) +#define bus_space_read_stream_2(t, h, o) bus_space_read_2((t), (h), (o)) +#define bus_space_read_stream_4(t, h, o) bus_space_read_4((t), (h), (o)) + +#define bus_space_read_multi_stream_1(t, h, o, a, c) \ + bus_space_read_multi_1((t), (h), (o), (a), (c)) +#define bus_space_read_multi_stream_2(t, h, o, a, c) \ + bus_space_read_multi_2((t), (h), (o), (a), (c)) +#define bus_space_read_multi_stream_4(t, h, o, a, c) \ + bus_space_read_multi_4((t), (h), (o), (a), (c)) + +#define bus_space_write_stream_1(t, h, o, v) \ + bus_space_write_1((t), (h), (o), (v)) +#define bus_space_write_stream_2(t, h, o, v) \ + bus_space_write_2((t), (h), (o), (v)) +#define bus_space_write_stream_4(t, h, o, v) \ + bus_space_write_4((t), (h), (o), (v)) + +#define bus_space_write_multi_stream_1(t, h, o, a, c) \ + bus_space_write_multi_1((t), (h), (o), (a), (c)) +#define bus_space_write_multi_stream_2(t, h, o, a, c) \ + bus_space_write_multi_2((t), (h), (o), (a), (c)) +#define bus_space_write_multi_stream_4(t, h, o, a, c) \ + bus_space_write_multi_4((t), (h), (o), (a), (c)) + +#define bus_space_set_multi_stream_1(t, h, o, v, c) \ + bus_space_set_multi_1((t), (h), (o), (v), (c)) +#define bus_space_set_multi_stream_2(t, h, o, v, c) \ + bus_space_set_multi_2((t), (h), (o), (v), (c)) +#define bus_space_set_multi_stream_4(t, h, o, v, c) \ + bus_space_set_multi_4((t), (h), (o), (v), (c)) + +#define bus_space_read_region_stream_1(t, h, o, a, c) \ + bus_space_read_region_1((t), (h), (o), (a), (c)) +#define bus_space_read_region_stream_2(t, h, o, a, c) \ + bus_space_read_region_2((t), (h), (o), (a), (c)) +#define bus_space_read_region_stream_4(t, h, o, a, c) \ + bus_space_read_region_4((t), (h), (o), (a), (c)) + +#define bus_space_write_region_stream_1(t, h, o, a, c) \ + bus_space_write_region_1((t), (h), (o), (a), (c)) +#define bus_space_write_region_stream_2(t, h, o, a, c) \ + bus_space_write_region_2((t), (h), (o), (a), (c)) +#define bus_space_write_region_stream_4(t, h, o, a, c) \ + bus_space_write_region_4((t), (h), (o), (a), (c)) + +#define bus_space_set_region_stream_1(t, h, o, v, c) \ + bus_space_set_region_1((t), (h), (o), (v), (c)) +#define bus_space_set_region_stream_2(t, h, o, v, c) \ + bus_space_set_region_2((t), (h), (o), (v), (c)) +#define bus_space_set_region_stream_4(t, h, o, v, c) \ + bus_space_set_region_4((t), (h), (o), (v), (c)) + +#define bus_space_copy_region_stream_1(t, h1, o1, h2, o2, c) \ + bus_space_copy_region_1((t), (h1), (o1), (h2), (o2), (c)) +#define bus_space_copy_region_stream_2(t, h1, o1, h2, o2, c) \ + bus_space_copy_region_2((t), (h1), (o1), (h2), (o2), (c)) +#define bus_space_copy_region_stream_4(t, h1, o1, h2, o2, c) \ + bus_space_copy_region_4((t), (h1), (o1), (h2), (o2), (c)) + #endif /* _I386_BUS_H_ */ |