Date: Sun, 20 Jan 2019 17:20:46 -0700 From: Warner Losh <imp@bsdimp.com> To: Kurt Jaeger <pi@freebsd.org> Cc: "Rodney W. Grimes" <freebsd-rwg@pdx.rh.cn85.dnsmgr.net>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: Multiport serial card Exsys EX-44388, where are the devices ? Message-ID: <CANCZdfrVJthJGEedCNZ-nnt88Mi1xD-0HFaJXKpFGVyuPSvVhA@mail.gmail.com> In-Reply-To: <CANCZdfoBpt5vjzAfazX7ezLhEYRQfhEK5xPHGM3_SYy_QctUOw@mail.gmail.com> References: <20190120183908.GC78316@home.opsec.eu> <201901201920.x0KJKIEL066339@pdx.rh.CN85.dnsmgr.net> <20190120205811.GA1258@fc.opsec.eu> <CANCZdfoBpt5vjzAfazX7ezLhEYRQfhEK5xPHGM3_SYy_QctUOw@mail.gmail.com>
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On Sun, Jan 20, 2019 at 5:09 PM Warner Losh <imp@bsdimp.com> wrote:
>
>
> On Sun, Jan 20, 2019, 4:41 PM Kurt Jaeger <pi@freebsd.org wrote:
>
>> Hi!
>>
>> > Well no longer needed as puc0 has found and allocated the
>> > device(s) which would of shown up had you done this before
>> > you fixed puc0 to find them.
>>
>> The problem is that the found 4 uarts are not 8 uarts, and they do not
>> seem to work (tested using kermit), either 8-(
>>
>> Any hints on how to debug this ?
>>
>
> You need to look to get the register width right.
>
Hit send too quick... I was going to say you needed to make sure that the
register width and strides were right, but they look to be because NetBSD
has
/* SystemBase SB16C1058 UARTs */
{ "SystemBase SB16C1058",
{ PCI_VENDOR_SYSTEMBASE, PCI_PRODUCT_SYSTEMBASE_SB16C1058, 0,
0 },
{ 0xffff, 0xffff, 0,
0 },
{
{ PUC_PORT_TYPE_COM, PCI_BAR0, 0x00, COM_FREQ },
{ PUC_PORT_TYPE_COM, PCI_BAR0, 0x08, COM_FREQ },
{ PUC_PORT_TYPE_COM, PCI_BAR0, 0x10, COM_FREQ },
{ PUC_PORT_TYPE_COM, PCI_BAR0, 0x18, COM_FREQ },
{ PUC_PORT_TYPE_COM, PCI_BAR0, 0x20, COM_FREQ },
{ PUC_PORT_TYPE_COM, PCI_BAR0, 0x28, COM_FREQ },
{ PUC_PORT_TYPE_COM, PCI_BAR0, 0x30, COM_FREQ },
{ PUC_PORT_TYPE_COM, PCI_BAR0, 0x38, COM_FREQ },
},
},
for this card. so there's 4 UARTs per bar, like you are seeing. You have
DEFAULT_RCLK * 8. COM_FREQ in NetBSD is defined:
sys/dev/ic/comreg.h:#define COM_FREQ 1843200 /* 16-bit baud rate divisor */
and FreeBSD's DEFAULT_RCLK is
sys/dev/puc/puc_cfg.h:#define DEFAULT_RCLK 1843200
so at a guess you need to remove the *8 to make things work. Otherwise you
are sending data 8 times too slow.
Warner
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