Date: Fri, 6 Jun 2008 17:22:07 +0000 (UTC) From: Warner Losh <imp@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/dev/cs if_cs.c Message-ID: <200806061722.m56HMIKx067342@repoman.freebsd.org>
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imp 2008-06-06 17:22:07 UTC FreeBSD src repository Modified files: sys/dev/cs if_cs.c Log: SVN rev 179620 on 2008-06-06 17:22:07Z by imp o Remove unused cs_debug tunable. I think I added it and then nothing with it. Bad imp. Removing us dips us under 10,000 in size too. o Replace an unconditional 30ms DELAY (yes, busy wait) with a check of the SIBUSY bit in the SelfST register before accessing the eeprom. This changes the time to read the EEPROM from 2 * 20 * 30ms (1.2s) to < 20*25us (.0005s) and make the attach of the card tolerable when ethernet media is present. Include data from the datasheet about why this works. While this is a 2500x speed increase, it doesn't really matter at all once the card is probed... o set dev earlier in softc. Revision Changes Path 1.52 +22 -10 src/sys/dev/cs/if_cs.c
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