Date: Sat, 29 Apr 2006 10:48:48 +0400 From: Igor Kovalenko <garrison@mail.ru> To: Igor Kovalenko <garrison@mail.ru>, qemu-devel@nongnu.org, freebsd-emulation@freebsd.org Subject: Re: playing with qemu's 8139 nic and FreeBSD (loopback mode missing?) Message-ID: <44530C50.6040902@mail.ru> In-Reply-To: <20060428221142.GA11504@saturn.kn-bremen.de> References: <20060427203718.GA15953@saturn.kn-bremen.de> <445241DE.9020909@mail.ru> <20060428221142.GA11504@saturn.kn-bremen.de>
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Juergen Lock wrote: > On Fri, Apr 28, 2006 at 08:25:02PM +0400, Igor Kovalenko wrote: >> Juergen Lock wrote: >>> I played with >>> qemu -monitor stdio -m 256 -cdrom 6.1-RC1-i386-disc1.iso -usb -soundhw es1370 -kernel-kqemu -net nic,model=rtl8139 -net user >>> and got it as far as >>> re0: diagnostic failed, failed to receive packet in loopback mode >>> (followed by a panic :) with the (experimental) patches below. >>> >>> Anyone in the mood to implement loopback mode for this nic? >>> >>> Hmm actually... I just found the original posting in the archive, >>> is C+ mode implemented now? If not re is probably not what I want, >> The rtl8139 is set up with PCI rev ID 0x20 which should be enough for OS driver >> to detect C+ mode features. C+ mode is OK, tested with Linux driver. > > Cool, so I want FreeBSD's re driver. That one checks TxConfig > tho, as changed in my patch (inside #if 0). And when changed, > it still doesn't work as mentioned above because the driver expects > loopback mode to be working. >>> but the rl driver that it attaches without that #if 0'd (now) hunk >>> below doesnt seem to be able to get data thru either and I get >>> rl0: watchdog timeout >>> in dmesg, which usually means the driver doesnt receive interrupts. >>> >>> What the heck, I'll append a log of a run just doing in fixit->cdrom: >>> ifconfig rl0 10.0.2.15 >>> and then exiting (which is enough to trigger the watchdog timeout...) >>> >> I'm too lasy to test with fresh freebsd installation :) > > No need to install FreeBSD, you can get away by just using > fixit mode of an install iso, i.e. disc1. (which actually is > what I did above. :) > > You can look at 6.1RC's re driver here: > http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/re/if_re.c?annotate=1.46.2.14 > which includes: > http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/pci/if_rlreg.h?annotate=1.51.2.3 > > And 6.1RC disc1 iso is e.g. here: > ftp://ftp.ru.freebsd.org:/pub/FreeBSD/ISO-IMAGES-i386/6.1/6.1-RC1-i386-disc1.iso > > Thanks, that iso pointer made it. Please try the following on top of your patch, at least ping should now work: --- hw/rtl8139.c.freebsd 2006-04-29 10:44:43.000000000 +0400 +++ hw/rtl8139.c 2006-04-29 10:45:37.000000000 +0400 @@ -1979,6 +1979,18 @@ return ret; } +static uint32_t rtl8139_RxBufAddr_read(RTL8139State *s) +{ + /* this value is NOT off by 16 */ + uint32_t ret = s->RxBufAddr; + +#ifdef DEBUG_RTL8139 + printf("RTL8139: RxBufAddr read val=0x%04x\n", ret); +#endif + + return ret; +} + static void rtl8139_RxBuf_write(RTL8139State *s, uint32_t val) { #ifdef DEBUG_RTL8139 @@ -2441,6 +2453,10 @@ ret = rtl8139_RxBufPtr_read(s); break; + case RxBufAddr: + ret = rtl8139_RxBufAddr_read(s); + break; + case BasicModeCtrl: ret = rtl8139_BasicModeCtrl_read(s); break; -- Kind regards, Igor V. Kovalenko
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