On Thu, Aug 21, 2025 at 10:24:02AM +0000, Bernhard Beschow wrote: > > > Am 21. August 2025 03:36:44 UTC schrieb Guenter Roeck <li...@roeck-us.net>: > >On 8/20/25 14:19, Bernhard Beschow wrote: > >> This series fixes the Designware PCIe host to work with cards other than > >> virio-net-pci, e.g. e1000. It was tested on the imx8mp-evk machine. > >> > >> The series is structured as follows: The first part refactors the device > >> model to create memory regions for inbound/outbound PCI mappings on demand > >> rather than upfront since this approach doesn't scale for adding I/O space > >> support. The second part consists of fixing the memory mapping by adding > >> I/O > >> space support and fixing default inbound viewport mapping. The third part > >> concludes the series by implementing device reset and cleaning up the > >> imx8mp SoC > >> implementation. > >> > >> Testing done: > >> * Boot imx8mp-evk machine with Buildroot while having an e1000 card > >> attached. > >> Observe that it gets an IP address via DHCP and allows for downloading an > >> HTML > >> file via HTTP. > >> > >Crashing for me even if no PCIe card is attached. This is with the series > >applied > >on top of 10.1.0-rc4 or 10.0.3. I have not tried to track down the problem. > > > >Guenter > > Hi Guenther, > > Thanks for testing this series! I can reproduce the issue with Buildroot > while the functional test passes... > > I guess that I was too optimistic in having resolved the issue mentioned in > the last patch. Does it work for you if you omit it? > I'll give it another try tonight.
Guenter > Thanks, > Bernhard > > > > >--- > >Build reference: v6.17-rc1-287-g685de850cabf > >Compiler version: aarch64-linux-gcc (GCC) 13.4.0 > >Qemu version: 10.0.94 (v10.1.0-rc4-55-g320ed12bd9) > > > >[ 7.748393] Internal error: synchronous external abort: 0000000096000010 > >[#1] SMP > >[ 7.748917] Modules linked in: > >[ 7.749533] CPU: 3 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G M > > N 6.17.0-rc2-g685de850cabf #1 PREEMPT > >[ 7.749689] Tainted: [M]=MACHINE_CHECK, [N]=TEST > >[ 7.749745] Hardware name: NXP i.MX8MPlus EVK board (DT) > >[ 7.750118] ok 1 block_bits=10 cluster_bits=3 > >blocks_per_group=8192 group_count=4 desc_size=64 > >[ 7.749922] Workqueue: async async_run_entry_fn > >[ 7.751174] pstate: 200000c5 (nzCv daIF -PAN -UAO -TCO -DIT -SSBS > >BTYPE=--) > >[ 7.751267] pc : pci_generic_config_read+0x38/0xb8 > >[ 7.751370] lr : pci_generic_config_read+0x24/0xb8 > >[ 7.751474] sp : ffff8000845fb730 > >[ 7.751532] x29: ffff8000845fb730 x28: 00000000000000ff x27: > >0000000000000000 > >[ 7.751686] x26: 0000000000000001 x25: ffff80008290c008 x24: > >ffff8000832cbe80 > >[ 7.751770] x23: 0000000000000000 x22: ffff8000845fb844 x21: > >ffff000008a73800 > >[ 7.751859] x20: ffff8000845fb7a4 x19: 0000000000000004 x18: > >00000000ffffffff > >[ 7.751942] x17: ffff800080e2f918 x16: ffff800080e2f7ac x15: > >ffff800080e2e6d8 > >[ 7.752027] x14: 0000000000000000 x13: 0000000000000000 x12: > >ffff80008427cab8 > >[ 7.752120] x11: 0000000000000326 x10: 0000000000000326 x9 : > >00000000000c0326 > >[ 7.752225] x8 : 000000006973b6c5 x7 : ffff800085c00000 x6 : > >0000000000000000 > >[ 7.752320] x5 : ffff000007cc5080 x4 : 0000000000000000 x3 : > >0000000000000000 > >[ 7.752403] x2 : 0000000000000000 x1 : ffff000004bf5680 x0 : > >ffff800085900000 > >[ 7.752577] Call trace: > >[ 7.752694] pci_generic_config_read+0x38/0xb8 (P) > >[ 7.752794] dw_pcie_rd_other_conf+0x38/0xb0 > >[ 7.752851] pci_bus_read_config_dword+0x80/0xe4 > >[ 7.752903] pci_bus_generic_read_dev_vendor_id+0x30/0x190 > >[ 7.752964] pci_scan_device+0xdc/0x184 > >[ 7.753010] pci_scan_slot+0xe0/0x23c > >[ 7.753056] pci_scan_child_bus_extend+0x44/0x2cc > >[ 7.753110] pci_scan_bridge_extend+0x514/0x598 > >[ 7.753166] pci_scan_child_bus_extend+0x104/0x2cc > >[ 7.753220] pci_scan_root_bus_bridge+0x64/0xd8 > >[ 7.753273] pci_host_probe+0x34/0x10c > >[ 7.753328] dw_pcie_host_init+0x2f0/0x4b0 > >[ 7.753376] imx_pcie_probe+0x33c/0x70c > >[ 7.753439] platform_probe+0x5c/0x9c > >[ 7.753485] really_probe+0xc0/0x390 > >[ 7.753530] __driver_probe_device+0x7c/0x15c > >[ 7.753581] driver_probe_device+0x3c/0x110 > >[ 7.753633] __device_attach_driver+0xbc/0x158 > >
