> -----Original Message----- > From: > linuxppc-dev-bounces+vivek.mahajan=freescale....@lists.ozlabs. > org > [mailto:linuxppc-dev-bounces+vivek.mahajan=freescale....@lists .ozlabs.org] On Behalf Of Felix Radensky > Sent: Wednesday, December 16, 2009 2:56 AM > To: linuxppc-...@ozlabs.org; Aggrwal Poonam-B10812; Kumar Gala > Subject: Problem with mini-PCI-E slot on P2020RDB > > Hi, > > I'm trying to use mini-PCI-E WLAN card on P2020RDB running > 2.6.32, but so far without success. > ath9k driver identifies the device, I can run ifconfig, > iwconfig and hostapd on wlan0, but device is not getting any > interrupts, so I suspect the interrupt configuration is > wrong. Atheros ath9k driver reports: > > phy0: Atheros AR9280 MAC/BB Rev:2 AR5133 RF Rev:d0: > mem=0xf1060000, irq=16 > > The mapping for irq 16 is: > > irq: irq 1 on host /s...@ffe00000/p...@40000 mapped to virtual irq 16 > > According to /proc/interrupts: > > CPU0 > 16: 0 OpenPIC Edge ath9k > > The same problem happens if Atheros card is plugged (with > adapter) into regular PCI-E slot. > > It seems that p2020rdb device tree is missing > interrupt-map-mask and interrupt-map properties in PCI-E nodes. > > I've tried running kernel from latest FSL BSP for this board > (based on 2.6.32-rc3). The device tree has the > interrupt-map-mask and interrupt-map properties, and > interrupt mapping is different: > > irq: irq 0 on host /s...@ffe00000/p...@40000 mapped to virtual irq 16 > > In /proc/interrups I see > CPU0 > 16: 100001 OpenPIC Level ath9k > > However, when ath9k driver is loaded I get this: > > irq 16: nobody cared (try booting with the "irqpoll" option) > Call Trace: > [efbefa40] [c00074b0] show_stack+0x4c/0x16c (unreliable) > [efbefa70] [c0073970] __report_bad_irq+0x38/0xd0 [efbefa90] > [c0073bd4] note_interrupt+0x1cc/0x22c [efbefac0] [c00747d0] > handle_fasteoi_irq+0xf4/0x128 [efbefae0] [c0004eb8] > do_IRQ+0xc8/0xf4 [efbefb00] [c001081c] > ret_from_except+0x0/0x18 [efbefbc0] [00000000] (null) > [efbefc10] [c0004d24] do_softirq+0x60/0x64 [efbefc20] > [c0044670] irq_exit+0x88/0xa8 [efbefc30] [c0004ebc] > do_IRQ+0xcc/0xf4 [efbefc50] [c001081c] > ret_from_except+0x0/0x18 [efbefd10] [c00730b4] > __setup_irq+0x320/0x39c [efbefd30] [c0073214] > request_threaded_irq+0xe4/0x148 [efbefd60] [f2244218] > ath_pci_probe+0x1b0/0x3a4 [ath9k] [efbefda0] [c01c386c] > local_pci_probe+0x24/0x34 [efbefdb0] [c01c3bc0] > pci_device_probe+0x84/0xa8 [efbefde0] [c01e86b8] > driver_probe_device+0xa8/0x1a8 [efbefe00] [c01e8874] > __driver_attach+0xbc/0xc0 [efbefe20] [c01e7d88] > bus_for_each_dev+0x70/0xac [efbefe50] [c01e84d8] > driver_attach+0x24/0x34 [efbefe60] [c01e7504] > bus_add_driver+0xb8/0x278 [efbefe90] [c01e8bec] > driver_register+0x84/0x178 [efbefeb0] [c01c3e6c] > __pci_register_driver+0x54/0xe4 [efbefed0] [f2244434] > ath_pci_init+0x28/0x38 [ath9k] [efbefee0] [f215702c] > ath9k_init+0x2c/0x100 [ath9k] [efbefef0] [c0001d34] > do_one_initcall+0x3c/0x1e8 [efbeff20] [c006f9f0] > sys_init_module+0xf8/0x220 [efbeff40] [c00101c4] > ret_from_syscall+0x0/0x3c > handlers: > [<f223badc>] (ath_isr+0x0/0x1b4 [ath9k]) Disabling IRQ #16
Looks like INTA is not being routed to IRQ0 properly for this PCIe ctlr. Try changing the interrupt-map prop for the ctlr at 0xffe0a000 to the following, temporarily:- interrupt-map = < /* IDSEL 0x0 */ 0000 0x0 0x0 0x1 &mpic 0x1 0x1 0000 0x0 0x0 0x2 &mpic 0x2 0x1 0000 0x0 0x0 0x3 &mpic 0x3 0x1 0000 0x0 0x0 0x4 &mpic 0x0 0x1 >; > > Atheros card plugged into regular PCI-E slot works OK in FSL BSP. > > Any help in resolving this is much appreciated. > > Thanks. > > Felix. > Thanks, Vivek _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
