Re: [coreboot] rfkill equivalent on the X60 - first partial success
On 08.12.2014 01:00, Charles Devereaux wrote: Sorry, but if it is like the X60 it can not be made the work. Just like in the WWAN slot, but in reverse, the USB lines are not wired on the WLAN slot. IIRC this is not the case on the X201 (a very nice machine, but coreboot support may not be as good for the moment. However the ACPI tables look more complete.) Please provide problem descriptions when doubting the quality of my work. Otherwise you're empty-talking. signature.asc Description: OpenPGP digital signature -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] rfkill equivalent on the X60 - first partial success
Hello On Mon, Dec 8, 2014 at 3:17 AM, Vladimir 'φ-coder/phcoder' Serbinenko phco...@gmail.com wrote: IIRC this is not the case on the X201 (a very nice machine, but coreboot support may not be as good for the moment. However the ACPI tables look more complete.) Please provide problem descriptions when doubting the quality of my work. Otherwise you're empty-talking. I did not mean that, I should have answered differently. I meant what he wants to do is not possible on the X60, which is generally regarded as the non-chromebook laptop with the best coreboot support. If he really needs that functionality, the next best bet is the X201, a machine with better specs, and promising coreboot support. Based on http://www.coreboot.org/Board:lenovo/x201, I can say that the ACPI tables look more complete since it can boot windows which is very touchy, while the X60 can't. To me, That indicate *high quality* work, as I am still exploring several X60 issues. But since I do not have a X201, I can not say how it compares to the X60 in terms of coreboot support (you seem to have one, so please tell me. For example, is native video init working? I could move to the X201 if it was not so expansive :-) PS: I read you did not test the modem. Unless it is a one of the few ALSA supported modems like the 3054, it won't work The latest versions of Coreboot have AZALIA support, which will initialise the codec for snd-hda-intel. If you replace the modem by a ML 3054 (drop it replacement, ex: http://www.ebay.com/itm/Asus-F6E-Fax-Modem-w-Cable-ML3054-/380880135505?pt=US_Laptop_Modem_Cards) it should work with slmodemd (ex: https://freemor.wordpress.com/2008/05/07/getting-a-si3054-modem-working-on-hardy-heron/). It does on the X60. -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] rfkill equivalent on the X60 - first partial success
On 07.12.2014 04:31, Charles Devereaux wrote: It can be powered, since in the X60 the WWAN port only has the USB lines wired, so it's not much of a security problem for the PCI bus as long as it is not connected to the USB bus where it could wake up from suspend and pretend to be many different things. The hardware swich properly disconnects the bluetooth module from USB. It would be nice to do the same for wwan, but I guess ec_access and echo -n suspend are better than nothing. I plan to try and create a rfkill-wwan kernel module doing just that. I tried to find some code example for the RCBA but couldn't. Has anyone ever managed to get the USB lines on the T60 WLAN slot to work? I plugged in an Intel 7260 802.11ac + Bluetooth card, and it is reportedly using USB for bluetooth and PCIe for WLAN. My problem is that the Bluetooth part of the card doesn't even show up in lsusb. This thread made me wonder whether this is just an issue with broken rfkill. Regards, Carl-Daniel -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] rfkill equivalent on the X60 - first partial success
Sorry, but if it is like the X60 it can not be made the work. Just like in the WWAN slot, but in reverse, the USB lines are not wired on the WLAN slot. IIRC this is not the case on the X201 (a very nice machine, but coreboot support may not be as good for the moment. However the ACPI tables look more complete.) Most dual (wifi+bt) mini PCIe cards use the PCIe lines for wifi and the USB lines for bt, which is why you see the wifi in lspci but no bt in lsusb. On Sun, Dec 7, 2014 at 5:57 PM, Carl-Daniel Hailfinger c-d.hailfinger.devel.2...@gmx.net wrote: On 07.12.2014 04:31, Charles Devereaux wrote: It can be powered, since in the X60 the WWAN port only has the USB lines wired, so it's not much of a security problem for the PCI bus as long as it is not connected to the USB bus where it could wake up from suspend and pretend to be many different things. The hardware swich properly disconnects the bluetooth module from USB. It would be nice to do the same for wwan, but I guess ec_access and echo -n suspend are better than nothing. I plan to try and create a rfkill-wwan kernel module doing just that. I tried to find some code example for the RCBA but couldn't. Has anyone ever managed to get the USB lines on the T60 WLAN slot to work? I plugged in an Intel 7260 802.11ac + Bluetooth card, and it is reportedly using USB for bluetooth and PCIe for WLAN. My problem is that the Bluetooth part of the card doesn't even show up in lsusb. This thread made me wonder whether this is just an issue with broken rfkill. Regards, Carl-Daniel -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] rfkill equivalent on the X60 - first partial success
On 03.12.2014 23:32, Charles Devereaux wrote: Hello As explained before, thinkpad-acpi can't control the non-wifi radio like bluetooth or wwan, because it expects some ACPI entries that aren't there - so there is no rfkill control for these, even if some non-working entries are shown with 'rfkill list' You have a hardware button to do an rfkill. I don't see why software should mess more with this. To emulate rfkill functionality, just write directly to the ec, for ex to turn on wwan and wifi: ./ec_access -w 0x3a -v 0x60 Usecase? It works great for bluetooth, basically physically unplugging the device so that if you have uhci_hcd as a module, an rmmod/modprobe will no longer show the device on lsusb. RCBA registers can disable any USB ports. But again: usecase? signature.asc Description: OpenPGP digital signature -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] rfkill equivalent on the X60 - first partial success
To emulate rfkill functionality, just write directly to the ec, for ex to turn on wwan and wifi: ./ec_access -w 0x3a -v 0x60 Usecase? Example: I have a wwan card, but I mostly use it for GPS. I can save some power by turning it off without rebooting, while keeping wifi on with: I'd like to see some real figures on power saved between idle wwan and disabled wwan, I really doubt it's anything noticeable The hardware button is not safe enough : register 0x3A hasthe H/W Override bitto enable to control wireless devices even if the global WAN disable switch is ON. Disabling the USB ports through the RCBA registers (nice idea!) would prevent such an override. Also, it would save more power on the wwan that the hardware button : the wwan module is not fully desactivated since it replies to AT commands Several persons do not fully trust a wwan module. Physically removing it is the solution suggested. Disabling the usb port would be a simpler solution for those than do not want to physically open their laptop yet do not trust the hardware button due to the override bit. wwan module is powered unconditionally. So if you don't trust it - remove it. Also none of disables discussed here is irreversible if you're concerned about rogue software. It seems to have several usecase. None of them looks valid signature.asc Description: OpenPGP digital signature -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] rfkill equivalent on the X60 - first partial success
Hello On Sat, Dec 6, 2014 at 9:09 PM, Vladimir 'φ-coder/phcoder' Serbinenko phco...@gmail.com wrote: Example: I have a wwan card, but I mostly use it for GPS. I can save some power by turning it off without rebooting, while keeping wifi on with: I'd like to see some real figures on power saved between idle wwan and disabled wwan, I really doubt it's anything noticeable Correct. I don't have a x60 with an official wwan module, so can't test how it works with lenovo bios (saving more or less power?), but from the datasheet of a Huawei 770, with idle meaning usb connected, and disabled meaning rfkill (hardware switch or using ec_access to write to the H8) : - in idle mode it goes from ~92 mA when it's disabled to about ~100mA when it's not (I'm using an average of 3G and 2G power consumption, but they only differ by about 4 mA) - when it's suspended, between 3 and 4mA (tell me if you want a copy of the datasheet. I guess it's similar to other modules) So basically, the hardware switch or the ec_access command disable currently saves 8 mA, about 0.026W at 3.3.V, ie almost nothing, while properly suspending wwan and not letting it come back in idle mode (or even disconnecting it from the USB bus) would save 90 mA so 0.330 W, which starts becoming interesting. The latter can be already be done with ec_access and echo -n suspend /sys/bus/usb/drivers/whatever/power/level, but that's not very user friendly, and I don't know if the module won't try to wake-up from suspend. wwan module is powered unconditionally. So if you don't trust it - remove it. It can be powered, since in the X60 the WWAN port only has the USB lines wired, so it's not much of a security problem for the PCI bus as long as it is not connected to the USB bus where it could wake up from suspend and pretend to be many different things. The hardware swich properly disconnects the bluetooth module from USB. It would be nice to do the same for wwan, but I guess ec_access and echo -n suspend are better than nothing. I plan to try and create a rfkill-wwan kernel module doing just that. I tried to find some code example for the RCBA but couldn't. -- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
