From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-qy0-f181.google.com ([209.85.216.181]:49023 "EHLO mail-qy0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753131Ab1EQKkL convert rfc822-to-8bit (ORCPT ); Tue, 17 May 2011 06:40:11 -0400 Received: by qyg14 with SMTP id 14so187601qyg.19 for ; Tue, 17 May 2011 03:40:10 -0700 (PDT) MIME-Version: 1.0 Date: Tue, 17 May 2011 12:40:10 +0200 Message-ID: (sfid-20110517_124015_554239_60D0A877) Subject: ssb: how did we get special reject bit for SSB rev 2.3? From: =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= To: b43-dev , linux-wireless@vger.kernel.org, Michael Buesch , Larry Finger Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: I've just received 14e4:4312 card which is G-PHY BCM4311. I've checked for SSB rev in MMIO dump: read32 0xfaafcff8 -> 0x100422c5 0x100422c5 & (SSB_IDLOW_SSBREV == 0xF0000000) = 0x10000000 So this is SSB rev 2.3: #define SSB_IDLOW_SSBREV_23 0x10000000 /* 2.3 */ Currently we are using different REJECT bit for SSB rev 2.3: #define SSB_TMSLOW_REJECT 0x00000002 /* Reject (Standard Backplane) */ #define SSB_TMSLOW_REJECT_23 0x00000004 /* Reject (Backplane rev 2.3) */ Does anyone know where did we get this from? wl does never use this bit: $ grep "ssb_write32(0xf98)" wl.4312.txt | sort | uniq ssb_write32(0xf98) <- 0x00000003 ssb_write32(0xf98) <- 0x00010000 ssb_write32(0xf98) <- 0x00010002 ssb_write32(0xf98) <- 0x00030003 ssb_write32(0xf98) <- 0x00040003 ssb_write32(0xf98) <- 0x00070000 ssb_write32(0xf98) <- 0x00070001 ssb_write32(0xf98) <- 0x00070003 ssb_write32(0xf98) <- 0x20010000 ssb_write32(0xf98) <- 0x20010002 ssb_write32(0xf98) <- 0x20040003 ssb_write32(0xf98) <- 0x20070000 ssb_write32(0xf98) <- 0x20070001 ssb_write32(0xf98) <- 0x20070003 -- Rafał