On Wed, Dec 10, 2008 at 8:48 AM, Ivo van Doorn <ivdoorn@xxxxxxxxx> wrote: > Hi, > > Ralink has provided a new driver for the rt2860 hardware, > I haven't tested it yet but it deserves the attention for one simple reason: > it hooks into mac80211. > It doesn't hook into rt2x00lib yet, and neither does it support everything > mac80211 could do, but it can be used as base for further developing > the rt2800pci drivers by filling the last remaining gaps. > > The driver can be found here: > http://kernel.org/pub/linux/kernel/people/ivd/RT28xx_Linux_mac80211_20081203_V2.0-GPL.tgz > > Mark, Matthias and Felix you offered/provided help with the rt2800 developers > before. I would really appreciate if you could help me with merging this drivers > into the rt2800pci/rt2800usb drivers. :) > (Other developers are off course welcome as well!) > Thanks for doing some of the initial legwork. I have finally managed to get workflow in place and attempt to do some useful work. I can get a reproducible kernel oops by simply doing a 'ifconfig wlan0 up' followed by a 'iwlist wlan0 scanning'. I do plan on digging into this but here is the oops: BUG: unable to handle kernel NULL pointer dereference at 0000001c IP: [<f80e9720>] rt2x00ht_create_tx_descriptor+0x20/0xc0 [rt2x00lib] Oops: 0000 [#1] last sysfs file: /sys/devices/pci0000:00/0000:00:1c.3/0000:01:00.0/firmware/0000:01:00.0/loading Modules linked in: rt2800pci rt2x00pci rt2x00lib crc_ccitt eeprom_93cx6 netconsole ipv6 [last unloaded: eeprom_93cx6] Pid: 1803, comm: phy2 Not tainted (2.6.28-rc7-wl #12) 1000H EIP: 0060:[<f80e9720>] EFLAGS: 00010286 CPU: 0 EIP is at rt2x00ht_create_tx_descriptor+0x20/0xc0 [rt2x00lib] EAX: 00000000 EBX: f69e9e00 ECX: f7307b40 EDX: 00000000 ESI: f7307260 EDI: f7307240 EBP: f7307260 ESP: f69e9da0 DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 Process phy2 (pid: 1803, ti=f69e8000 task=f71267c0 task.ti=f69e8000) Stack: f69e9e00 f6959c00 f80e9800 f80e84ed f7307240 f6964c60 f6a06420 f7307b40 0000002e f690b42c f7307240 f69641a0 f6959c00 f80e885a f69e9f40 c17ecac0 00000000 f69eb100 f7307260 3f656025 00000000 f7307240 00000000 f6a26b00 Call Trace: [<f80e84ed>] rt2x00queue_create_tx_descriptor+0x23d/0x360 [rt2x00lib] [<f80e885a>] rt2x00queue_write_tx_frame+0x4a/0x190 [rt2x00lib] [<f80e762f>] rt2x00mac_tx+0x7f/0x300 [rt2x00lib] [<c036c831>] __ieee80211_tx+0x41/0xf0 [<c036e85f>] ieee80211_master_start_xmit+0x1df/0x400 [<c0378cd4>] schedule_timeout+0x54/0xb0 [<c02e4a02>] dev_hard_start_xmit+0x232/0x2c0 [<c02f2f3b>] __qdisc_run+0x19b/0x1f0 [<c02e4e87>] dev_queue_xmit+0x2e7/0x500 [<c035f3b8>] ieee80211_scan_work+0xe8/0x1a0 [<c035f2d0>] ieee80211_scan_work+0x0/0x1a0 [<c012b2da>] run_workqueue+0x4a/0xf0 [<c037887c>] schedule+0x18c/0x2f0 [<c012b70f>] worker_thread+0x7f/0xe0 [<c012e920>] autoremove_wake_function+0x0/0x50 [<c012b690>] worker_thread+0x0/0xe0 [<c012e547>] kthread+0x37/0x70 [<c012e510>] kthread+0x0/0x70 [<c0103eab>] kernel_thread_helper+0x7/0x1c Code: ff ff 90 90 90 90 90 90 90 90 90 83 ec 0c 89 1c 24 89 d3 0f b6 51 06 89 74 24 04 89 7c 24 08 8b 78 08 8d 14 92 8d 77 20 8b 46 20 <0f> b6 40 1c 66 c7 43 14 00 00 66 c7 43 12 00 00 66 89 43 18 0f EIP: [<f80e9720>] rt2x00ht_create_tx_descriptor+0x20/0xc0 [rt2x00lib] SS:ESP 0068:f69e9da0 Kernel panic - not syncing: Fatal exception in interrupt Dump of assembler code for function rt2x00ht_create_tx_descriptor: 0x00003730 <rt2x00ht_create_tx_descriptor+0>: sub $0xc,%esp 0x00003733 <rt2x00ht_create_tx_descriptor+3>: mov %ebx,(%esp) 0x00003736 <rt2x00ht_create_tx_descriptor+6>: mov %edx,%ebx 0x00003738 <rt2x00ht_create_tx_descriptor+8>: movzbl 0x6(%ecx),%edx 0x0000373c <rt2x00ht_create_tx_descriptor+12>: mov %esi,0x4(%esp) 0x00003740 <rt2x00ht_create_tx_descriptor+16>: mov %edi,0x8(%esp) 0x00003744 <rt2x00ht_create_tx_descriptor+20>: mov 0x8(%eax),%edi 0x00003747 <rt2x00ht_create_tx_descriptor+23>: lea (%edx,%edx,4),%edx 0x0000374a <rt2x00ht_create_tx_descriptor+26>: lea 0x20(%edi),%esi 0x0000374d <rt2x00ht_create_tx_descriptor+29>: mov 0x20(%esi),%eax 0x00003750 <rt2x00ht_create_tx_descriptor+32>: movzbl 0x1c(%eax),%eax 0x00003754 <rt2x00ht_create_tx_descriptor+36>: movw $0x0,0x14(%ebx) 0x0000375a <rt2x00ht_create_tx_descriptor+42>: movw $0x0,0x12(%ebx) 0x00003760 <rt2x00ht_create_tx_descriptor+48>: mov %ax,0x18(%ebx) 0x00003764 <rt2x00ht_create_tx_descriptor+52>: movzbl 0x8(%edx,%edx,1),%eax 0x0000376c <rt2x00ht_create_tx_descriptor+60>: mov %ax,0x10(%ebx) 0x00003770 <rt2x00ht_create_tx_descriptor+64>: mov %eax,%edx 0x00003772 <rt2x00ht_create_tx_descriptor+66>: testw $0xff00,0x6(%ecx) 0x00003778 <rt2x00ht_create_tx_descriptor+72>: je 0x3781 <rt2x00ht_create_tx_descriptor+81> 0x0000377a <rt2x00ht_create_tx_descriptor+74>: or $0x8,%edx 0x0000377d <rt2x00ht_create_tx_descriptor+77>: mov %dx,0x10(%ebx) 0x00003781 <rt2x00ht_create_tx_descriptor+81>: testb $0x40,0x20(%edi) 0x00003785 <rt2x00ht_create_tx_descriptor+85>: je 0x378b <rt2x00ht_create_tx_descriptor+91> 0x00003787 <rt2x00ht_create_tx_descriptor+87>: btsl $0xe,(%ebx) 0x0000378b <rt2x00ht_create_tx_descriptor+91>: movzbl 0xa(%esi),%edx 0x0000378f <rt2x00ht_create_tx_descriptor+95>: movzbl %dl,%eax 0x00003792 <rt2x00ht_create_tx_descriptor+98>: test $0x8,%al 0x00003794 <rt2x00ht_create_tx_descriptor+100>: je 0x37a3 <rt2x00ht_create_tx_descriptor+115> 0x00003796 <rt2x00ht_create_tx_descriptor+102>: movw $0x2,0x16(%ebx) 0x0000379c <rt2x00ht_create_tx_descriptor+108>: movzbl 0xa(%esi),%edx 0x000037a0 <rt2x00ht_create_tx_descriptor+112>: movzbl %dl,%eax 0x000037a3 <rt2x00ht_create_tx_descriptor+115>: test $0x10,%al 0x000037a5 <rt2x00ht_create_tx_descriptor+117>: je 0x37b4 0x000037a7 <rt2x00ht_create_tx_descriptor+119>: movw $0x3,0x16(%ebx) 0x000037ad: movzbl 0xa(%esi),%edx 0x000037b1: movzbl %dl,%eax 0x000037b4: test $0x20,%al 0x000037b6: je 0x37c0 0x000037b8: btsl $0xf,(%ebx) ---Type <return> to continue, or q <return> to quit--- 0x000037bc: movzbl 0xa(%esi),%edx 0x000037c0: test %dl,%dl 0x000037c2: jns 0x37c8 0x000037c4: btsl $0x10,(%ebx) 0x000037c8: mov (%esp),%ebx 0x000037cb: mov 0x4(%esp),%esi 0x000037cf: mov 0x8(%esp),%edi 0x000037d3: add $0xc,%esp 0x000037d6: ret End of assembler dump. This could easily be my setup but I thought I would send it out to let you know your email did not go unnoticed and secondly in case you had some hints as to what I might be doing incorrectly. Mark > Ivo > > On Thursday 02 October 2008, Mark Asselstine wrote: >> Hello, >> >> I have some free cycles and would love to help out in getting support >> for rt2860 and wpa support into this project. I can see that such >> support was discussed some at the last development meeting as well as >> in Bug 10754. I have cloned the tree and am ready to go, anyone have >> any pointers to areas I can help out with? >> >> Regards, >> Mark >> >> ------------------------------------------------------------------------- >> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge >> Build the coolest Linux based applications with Moblin SDK & win great prizes >> Grand prize is a trip for two to an Open Source event anywhere in the world >> http://moblin-contest.org/redirect.php?banner_id=100&url=/ >> _______________________________________________ >> Rt2400-devel mailing list >> Rt2400-devel@xxxxxxxxxxxxxxxxxxxxx >> https://lists.sourceforge.net/lists/listinfo/rt2400-devel >> > > > -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
