Date: Thu, 27 Sep 2001 08:02:56 +0800 From: Mike Bruins <bruins@hal9000.net.au> To: "Matthew N. Dodd" <winter@jurai.net> Cc: Mike Bruins <bruins@hal9000.net.au>, freebsd-hardware@freebsd.org Subject: Re: health chip driver - vt82c686 - finishing off Message-ID: <20010927080256.A14035@wall.hal9000.net.au> In-Reply-To: <Pine.BSF.4.21.0109242143150.3806-100000@sasami.jurai.net>; from winter@jurai.net on Mon, Sep 24, 2001 at 09:47:38PM -0400 References: <20010925092517.A7092@wall.hal9000.net.au> <Pine.BSF.4.21.0109242143150.3806-100000@sasami.jurai.net>
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On Mon, Sep 24, 2001 at 09:47:38PM -0400, Matthew N. Dodd wrote:
> On Tue, 25 Sep 2001, Mike Bruins wrote:
> > I will again try a value of 1. Do you have any thoughts on
> > how to determine the value of the hwm_io_base_reg ?
>
> The documentation should tell you which config space register contains
> your io/mem address mapping.
>
> Typically this is 0x10 for IO and 0x14 for MEM.
I believe I need to read the value "loosely" pointed to by 0x70.
(by loosely I mean " &= 0xFFFE")
#define CONF_HWM_BASE 0x70
a = CONF_HWM_BASE;
v = pci_read_config(dev, a, 2);
viahwm_base = 0xFFFE & v;
device_printf(dev, "Base Address = 0x%04x\n",viahwm_base);
>
> What does the probe line for your driver output?
>
Output :
Sep 26 23:15:32 hal9000 /kernel: via0: via_attach via0
Sep 26 23:15:32 hal9000 /kernel: via0: register 0x00 = 0x1106
Sep 26 23:15:32 hal9000 /kernel: via0: register 0x02 = 0x3057
Sep 26 23:15:32 hal9000 /kernel: via0: register 0x74 = 0x0001
Sep 26 23:15:32 hal9000 /kernel: via0: register 0x74 = 0x0001
Sep 26 23:15:32 hal9000 /kernel: via0: register 0x70 = 0x0c01
Sep 26 23:15:32 hal9000 /kernel: via0: Base Address = 0x0c00
Sep 26 23:15:32 hal9000 /kernel: via0: via_attach: done
Sep 26 23:15:32 hal9000 /kernel:
Sep 26 23:15:32 hal9000 /kernel: Loaded via character device driver
Typically the viahwm_base is 0x0c00.
I have seen code using /dev/io device to access that memory,
but wondering if that should only be done in userland.
(asside:I am planning to write a bit of perl on the weekend to
test if it actually works.)
My questions is: What do I set the value of rid to?
a) 0x70
b) 0x0c00
c) Other? Please specify.
rid = ??;
via->res_mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
0ul, ~0ul, 0x01, RF_ACTIVE);
Oh yes, I want to thank everyone who has been involved with this
discussion. I didn't expect such a good response.
- mike
> | Matthew N. Dodd | '78 Datsun 280Z | '75 Volvo 164E | FreeBSD/NetBSD |
> | winter@jurai.net | 2 x '84 Volvo 245DL | ix86,sparc,pmax |
> | http://www.jurai.net/~winter | For Great Justice! | ISO8802.5 4ever |
>
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