From: Eli Cohen <echoline@gmail.com>
To: 9front@9front.org
Subject: Re: [9front] new nusb/serial driver
Date: Thu, 11 Jun 2020 00:36:43 -0700 [thread overview]
Message-ID: <CAHwi9bw=cQbr5yQffBZCPULtuCJKbGZGdyaAG_BA+EEamsp=3Q@mail.gmail.com> (raw)
In-Reply-To: <C9D2B976100027D110A27353EAE4E696@musolino.id.au>
[-- Attachment #1: Type: text/plain, Size: 184 bytes --]
I'm sending it again just in case
On Thu, Jun 11, 2020 at 12:30 AM Alex Musolino <alex@musolino.id.au> wrote:
>
> > I just attached the file to my email
>
> Did you? I don't see it.
[-- Attachment #2: cdc.c --]
[-- Type: text/x-csrc, Size: 2398 bytes --]
#include <u.h>
#include <libc.h>
#include <thread.h>
#include <fcall.h>
#include <9p.h>
#include "usb.h"
#include "serial.h"
enum {
ScACM = 2,
AT = 1,
};
static int
cdcsetparam(Serialport *p)
{
int res;
uchar vals[7];
Serial *ser;
ser = p->s;
PUT4(vals, p->baud);
vals[4] = 0;
if(p->stop == 1)
vals[4] = 0;
if(p->stop == 15)
vals[4] = 1;
if(p->stop == 2)
vals[4] = 2;
vals[5] = p->parity;
vals[6] = p->bits;
res = usbcmd(ser->dev, Rh2d | Rclass | Riface, 0x20, 0, 0, vals, 7);
return res;
}
static int
cdcinit(Serialport *p)
{
Serial *ser;
p->baud = 115200;
p->bits = 8;
p->parity = 0;
p->stop = 1;
ser = p->s;
cdcsetparam(p);
incref(ser->dev);
return 0;
}
static int
cdcsetbreak(Serialport *p, int val)
{
Serial *ser;
ser = p->s;
return usbcmd(ser->dev, Rh2d | Rclass | Riface, 0x23, (val != 0? 0xffff: 0x0000), 0, nil, 0);
}
static int
cdcseteps(Serialport *p)
{
devctl(p->epin, "maxpkt 256");
devctl(p->epout, "maxpkt 256");
return 0;
}
static int
cdcsendlines(Serialport *p)
{
if(p->rts)
p->ctlstate |= 0x0002;
else
p->ctlstate &= ~0x0002;
if(p->dtr)
p->ctlstate |= 0x0001;
else
p->ctlstate &= ~0x0001;
return usbcmd(p->s->dev, Rh2d | Rclass | Riface, 0x22, p->ctlstate, 0, nil, 0);
}
static int
cdcclearpipes(Serialport *p)
{
Serial *ser;
ser = p->s;
if(unstall(ser->dev, p->epout, Eout) < 0)
dprint(2, "disk: unstall epout: %r\n");
if(unstall(ser->dev, p->epin, Ein) < 0)
dprint(2, "disk: unstall epin: %r\n");
if(unstall(ser->dev, p->epintr, Ein) < 0)
dprint(2, "disk: unstall epintr: %r\n");
return 0;
}
static int
cdcwait4data(Serialport *p, uchar *data, int count)
{
int n;
qunlock(p->s);
while ((n = read(p->epin->dfd, data, count)) == 0)
;
qlock(p->s);
return n;
}
static Serialops cdcops = {
.init = cdcinit,
.setparam = cdcsetparam,
.setbreak = cdcsetbreak,
.seteps = cdcseteps,
.sendlines = cdcsendlines,
.clearpipes = cdcclearpipes,
.wait4data = cdcwait4data,
};
int
cdcprobe(Serial *ser)
{
int i, c;
ulong csp;
Usbdev *ud = ser->dev->usb;
Ep *ep;
c = 0;
for (i = 0; i < nelem(ud->ep); i++) {
if ((ep = ud->ep[i]) == nil)
continue;
csp = ep->iface->csp;
if (Class(csp) == Clcomms && Subclass(csp) == ScACM && Proto(csp) == AT)
c++;
}
if (c == 0)
return -1;
ser->nifcs = 1;
ser->outhdrsz = 0;
ser->hasepintr = 1;
ser->Serialops = cdcops;
return 0;
}
next prev parent reply other threads:[~2020-06-11 7:36 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-11 7:03 Eli Cohen
2020-06-11 7:17 ` [9front] " Alex Musolino
2020-06-11 7:19 ` Eli Cohen
2020-06-11 7:29 ` Alex Musolino
2020-06-11 7:36 ` Eli Cohen [this message]
2020-06-11 7:57 ` Eli Cohen
2020-06-11 12:15 ` cinap_lenrek
2020-06-11 14:08 ` Eli Cohen
2020-06-11 17:10 ` cinap_lenrek
2020-06-12 1:28 ` Eli Cohen
2020-06-12 18:02 ` cinap_lenrek
2020-06-12 22:15 ` Eli Cohen
2020-06-13 14:03 ` cinap_lenrek
2020-06-13 14:18 ` Eli Cohen
2020-06-13 15:37 ` cinap_lenrek
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