- 27 Mar, 2006 30 commits
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Michael Buesch authored
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Michael Buesch <mbuesch@freenet.de> Signed-off-by:
John W. Linville <linville@tuxdriver.com>
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Michael Buesch authored
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Michael Buesch authored
[PATCH] bcm43xx: split the channel helper functions, so that they can be used without a valid running core. Signed-off-by:
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Michael Buesch authored
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Michael Buesch authored
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Michael Buesch authored
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Michael Buesch authored
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Michael Buesch authored
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Michael Buesch authored
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Michael Buesch authored
[PATCH] Apple Airport: Add Kconfig note that the bcm43xx driver has to be used for Airport Extreme cards. Signed-off-by:
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Michael Buesch authored
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Michael Buesch authored
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Michael Buesch authored
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Michael Buesch authored
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Michael Buesch authored
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Michael Buesch authored
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Michael Buesch authored
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Danny van Dyk authored
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Michael Buesch authored
Wireless Ext update: update we_version_source set enc_capa Signed-off-by:
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Michael Buesch authored
This patch contains the beginnings of ethtool support for bcm43xx. It only implements get_drvinfo and get_link, but that's enough for ifplugd to use ethtool to know whether we're associated or not and then start or stop dhcp as necessary. Signed-off-by:
Jason Lunz <lunz@falooley.org> Signed-off-by:
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Michael Buesch authored
Geographical restriction should become part of the 80211 stack, so every driver does not have to duplicate it. Signed-off-by:
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Michael Buesch authored
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Michael Buesch authored
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Michael Buesch authored
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Michael Buesch authored
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Michael Buesch authored
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Michael Buesch authored
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Michael Buesch authored
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John W. Linville authored
Patch Kconfig and wireless/Makefile to merge bcm43xx 'properly' Signed-off-by: -
John W. Linville authored
Import the bcm43xx driver from the upstream sources here: ftp://ftp.berlios.de/pub/bcm43xx/snapshots/bcm43xx/bcm43xx-20060123.tar.bz2Signed-off-by:
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- 26 Mar, 2006 10 commits
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David S. Miller authored
Kbuild now points these out. Signed-off-by:David S. Miller <davem@davemloft.net>
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David S. Miller authored
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Manfred Spraul authored
Ingo's sem2mutex patch incorrectly replaced one reference to ipc/sem.c with ipc/mutex.c in a comment. Signed-off-by:
Manfred Spraul <manfred@colorfullife.com> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivialLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: drivers/char/ftape/lowlevel/fdc-io.c: Correct a comment Kconfig help: MTD_JEDECPROBE already supports Intel Remove ugly debugging stuff do_mounts.c: Minor ROOT_DEV comment cleanup BUG_ON() Conversion in drivers/s390/block/dasd_devmap.c BUG_ON() Conversion in mm/mempool.c BUG_ON() Conversion in mm/memory.c BUG_ON() Conversion in kernel/fork.c BUG_ON() Conversion in ipc/sem.c BUG_ON() Conversion in fs/ext2/ BUG_ON() Conversion in fs/hfs/ BUG_ON() Conversion in fs/dcache.c BUG_ON() Conversion in fs/buffer.c BUG_ON() Conversion in input/serio/hp_sdc_mlc.c BUG_ON() Conversion in md/dm-table.c BUG_ON() Conversion in md/dm-path-selector.c BUG_ON() Conversion in drivers/isdn BUG_ON() Conversion in drivers/char BUG_ON() Conversion in drivers/mtd/
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Bastien Roucaries authored
This patch correct a comment about cli(). Signed-off-by:
Bastien Roucaries <roucaries.bastien@gmail.com> Signed-off-by:
Adrian Bunk <bunk@stusta.de>
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Adrian Bunk authored
Intel chips are already supported. Signed-off-by:
David Woodhouse <dwmw2@infradead.org>
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Akinobu Mita authored
<linux@horizon.com> wrote: This is an extremely well-known technique. You can see a similar version that uses a multiply for the last few steps at http://graphics.stanford.edu/~seander/bithacks.html#CountBitsSetParallel whch refers to "Software Optimization Guide for AMD Athlon 64 and Opteron Processors" http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/25112.PDF It's section 8.6, "Efficient Implementation of Population-Count Function in 32-bit Mode", pages 179-180. It uses the name that I am more familiar with, "popcount" (population count), although "Hamming weight" also makes sense. Anyway, the proof of correctness proceeds as follows: b = a - ((a >> 1) & 0x55555555); c = (b & 0x33333333) + ((b >> 2) & 0x33333333); d = (c + (c >> 4)) & 0x0f0f0f0f; #if SLOW_MULTIPLY e = d + (d >> 8) f = e + (e >> 16); return f & 63; #else /* Useful if multiply takes at most 4 cycles */ return (d * 0x01010101) >> 24; #endif The input value a can be thought of as 32 1-bit fields each holding their own hamming weight. Now look at it as 16 2-bit fields. Each 2-bit field a1..a0 has the value 2*a1 + a0. This can be converted into the hamming weight of the 2-bit field a1+a0 by subtracting a1. That's what the (a >> 1) & mask subtraction does. Since there can be no borrows, you can just do it all at once. Enumerating the 4 possible cases: 0b00 = 0 -> 0 - 0 = 0 0b01 = 1 -> 1 - 0 = 1 0b10 = 2 -> 2 - 1 = 1 0b11 = 3 -> 3 - 1 = 2 The next step consists of breaking up b (made of 16 2-bir fields) into even and odd halves and adding them into 4-bit fields. Since the largest possible sum is 2+2 = 4, which will not fit into a 4-bit field, the 2-bit ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ "which will not fit into a 2-bit field" fields have to be masked before they are added. After this point, the masking can be delayed. Each 4-bit field holds a population count from 0..4, taking at most 3 bits. These numbers can be added without overflowing a 4-bit field, so we can compute c + (c >> 4), and only then mask off the unwanted bits. This produces d, a number of 4 8-bit fields, each in the range 0..8. From this point, we can shift and add d multiple times without overflowing an 8-bit field, and only do a final mask at the end. The number to mask with has to be at least 63 (so that 32 on't be truncated), but can also be 128 or 255. The x86 has a special encoding for signed immediate byte values -128..127, so the value of 255 is slower. On other processors, a special "sign extend byte" instruction might be faster. On a processor with fast integer multiplies (Athlon but not P4), you can reduce the final few serially dependent instructions to a single integer multiply. Consider d to be 3 8-bit values d3, d2, d1 and d0, each in the range 0..8. The multiply forms the partial products: d3 d2 d1 d0 d3 d2 d1 d0 d3 d2 d1 d0 + d3 d2 d1 d0 ---------------------- e3 e2 e1 e0 Where e3 = d3 + d2 + d1 + d0. e2, e1 and e0 obviously cannot generate any carries. Signed-off-by:
Akinobu Mita <mita@miraclelinux.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
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Artem B. Bityuckiy authored
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Akinobu Mita authored
By defining generic hweight*() routines - hweight64() will be defined on all architectures - hweight_long() will use architecture optimized hweight32() or hweight64() I found two possible cleanups by these reasons. Signed-off-by:
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Akinobu Mita authored
generic_{ffs,fls,fls64,hweight{64,32,16,8}}() were moved into include/asm-generic/bitops.h. So all architectures don't use them. Signed-off-by:
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