Date: Wed, 1 Apr 2015 12:21:09 -0700 From: Warner Losh <imp@bsdimp.com> To: =?utf-8?Q?Mat=C3=ADas_Perret_Cantoni?= <perretcantonim@gmail.com> Cc: freebsd-drivers@freebsd.org Subject: Re: load a driver during autoconfiguration Message-ID: <9E10CA7A-7216-45A1-87D3-DCFF52881298@bsdimp.com> In-Reply-To: <CADLKG00AuNk5ky35j7Z%2BUxk%2BGyrRPsxRSf850QPH6tU68-U0Zw@mail.gmail.com> References: <CADLKG03WSkbPPWwDkxd3NPa1q0cVP8C0JvA0T=Jwy2=wGv_tiA@mail.gmail.com> <5070289.9Ox4kP5ZdP@ralph.baldwin.cx> <21B44158-07C3-47AE-8132-BE5F2B408697@bsdimp.com> <CADLKG00AuNk5ky35j7Z%2BUxk%2BGyrRPsxRSf850QPH6tU68-U0Zw@mail.gmail.com>
index | next in thread | previous in thread | raw e-mail
[-- Attachment #1 --] > On Apr 1, 2015, at 12:18 PM, Matías Perret Cantoni <perretcantonim@gmail.com> wrote: > > > > 2015-03-09 15:03 GMT-03:00 Warner Losh <imp@bsdimp.com>: > > > On Mar 9, 2015, at 10:01 AM, John Baldwin <jhb@FreeBSD.org> wrote: > > > (trimming a little) > > One option is to always load the driver using an entry in loader.conf or in > > the kld_list variable in /etc/rc.conf. Another option to do on-demand loading > > is to write a custom devd handler. You can find some examples in > > /etc/devd/usb.conf (note that that file is auto-generated). I'm not sure what > > is output for a nomatch entry for an fdt bus. For devices that appear at > > runtime you can run 'cat /var/run/devd.pipe' in a window to see event details > > to use to write your match rule. However, for boot time events I think you > > will need to resort to looking at the code to decipher what variables are > > passed that you want to match on. > > devinfo -v will tell you the pnp info, which is what you’ll need to match the > device. This will load the driver after boot. It’s almost always easier, however, > to just add the driver to your /boot/loader.conf file. > > Sometime before BSDcan this year, there will be the option to automatically load > drivers based on PNP information from the parent bus coupled with the tables > compiled into the .ko files, but that’s not possible today. > Warner > > Hello. Thank you and sorry for the delay. > > I tried using the kld_list variable of /etc/rc.conf and it worked just fine: my driver gets loaded on boot time. > > On the other hand I couldn't get the loader.conf alternative to work: I created a loader.conf file in /boot (since there wasn't one) with only one line in it: > > myDriver_load="YES" > > The driver is not loaded after boot and dmesg doesn't shows any message about my driver. Is there a myDriver.ko in your load path? > I suspect that loader doesn't reads my file, because I also tried to change the autoboot delay of loader by overriding on my file, the autoboot_delay variable that's defined in /boot/defaults/loader.conf : > > # cat /boot/loader.conf > loader_delay="1" > autoboot_delay="1" > myDriver_load="YES" > > But loader still waits 10 seconds before booting: > ... > - > /boot/kernel/kernel data=0x4b3fc8+0x2c038 syms=[0x4+0x78c40+0x4+0x4b17f] > Hit [Enter] to boot immediately, or any other key for command prompt. > Booting [/boot/kernel/kernel] in 9 seconds ... > ... > > > Do you think that loader is reading my file or not? If there is more information that I can provide, just tell me! I think that you’re not doing the interface quite right. Warner [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQIcBAEBCgAGBQJVHEUlAAoJEGwc0Sh9sBEAq7cP/jUfmbm6G4W4Ne/7d+FVpNRb yvqYAuEk7SQVlNaOb4HtAJTKqXzCTDHNyQUOxX35euv0BlR2oIF3Iv45V/cv4kY9 TqtK3AFiH4c8FugudJTOZHC8PKWQHIJ8jKjHYesuzGdInzUSrdr5pNvJuZn74YEy Ki8FOTqh6YNkbEK1ZD6zqHBqHLhw4GWZTIVSbGcjY2PfQ+8nmXCMit6DV850b5VI FwrfzILty7RyAiMMse7Qd+OpiaX4rtI4NI5jcWpLjUvT4+k+hByBV35ufE7AEi5n BzTssCV1b5UU0ult3VnHVpND77220xl6xc0WssipDIvvL1qznYn3MEwncw66MNTI ri85ak+Vd8zvR40+9XHR2/tMzNsQkDRHCiPypsZqtbhrNnammiQMVAxXxRMm/58Q 6Fk+G7bPUqL8AfRn3TFwaJTIgbfkCC6CT//e/WhW5NBDde67Q/sousIOlFg6UGW2 XBvbvQELvPQrJi/PfTkDv9ZpeD0N0uQFRdmFlAQTlELFfNlpyj9Ha1uut39YCrTZ l0u2YPWI1BKjLWORXLCQ1bnn4CrgNQPrbTvs9JpLxovNUlhfoz/036aoEkvkMQGz PhS53ApJU36+JbxJXrz+ez3NvROn/BAskoYMrP9aEOrHyYHTQzMZL+AXDivdrJnp mZ951gXIAUKJQDq+YKIB =Gdln -----END PGP SIGNATURE-----home | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?9E10CA7A-7216-45A1-87D3-DCFF52881298>