Date: Sat, 13 Mar 2010 23:12:05 +0200 From: Alex RAY <ray@ddteam.net> To: Weongyo Jeong <weongyo@freebsd.org> Cc: Alexandr Rybalko <ray@dlink.ua>, current@freebsd.org, Weongyo Jeong <weongyo.jeong@gmail.com> Subject: Re: Call for Test and Review: bwn(4) - another Broadcom Wireless driver Message-ID: <20100313231205.5e68a89a.ray@ddteam.net> In-Reply-To: <20100312231333.GZ1295@weongyo> References: <20091223035331.GA1293@weongyo> <4b31cb29.9413f30a.5f4a.ffff8382@mx.google.com> <20100226005115.GP14937@weongyo> <20100227011535.ed3f2486.ray@ddteam.net> <20100228095259.GB3536@weongyo> <20100301103240.3a4aac8a.ray@dlink.ua> <20100303082833.GB22865@weongyo> <20100303111014.6564ea1e.ray@dlink.ua> <20100312231333.GZ1295@weongyo>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, 12 Mar 2010 15:13:34 -0800 Weongyo Jeong <weongyo.jeong@gmail.com> wrote: > > I thought that your opinion was right and if mem is > 0xf4000000-0xf4003fff (16 Kb) I thought the device has 4 cores. However > it looks this was wrong according to the below document: > > http://voodoowarez.com/bcm5365p.pdf > > Please see Section 3: PCI Core, PCI Bus (Page 34) that it indicates that > 16Kb, maybe 8 Kb in the old devices is core register region. > > "Accesses to the lower half of the core register region are translated > into system backplane accesses using the PCIBAR0Window register" > "Accesses to offsets 0x1000 to 0x17FF of this region initiate a direct > access to the external SPROM" > > If we just access memory using offset + core and bus_space_read_x > interfaces it would actually not access core register region. > > So without solving this problem it looks it could not remove coreswitch > routines. > > regards, > Weongyo Jeong > Hi, this document about SoC BCM5365P, not about PCI device with PCI to SSB bridge. I know in SoC`s like BSM5365 (I test it in BCM5354 and BCM5836) core switching is not required. BCM5354 - http://lists.freebsd.org/pipermail/freebsd-mips/2009-June/000421.html BCM5836 - http://lists.freebsd.org/pipermail/freebsd-mips/2010-February/000635.html With PCI device, when device report memory window 0xf4000000-0xf4003fff, why we can`t use full window? May be You can test your code without core switching? -- Alex RAY <ray@ddteam.net>
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20100313231205.5e68a89a.ray>