On Tue, Oct 18, 2022 at 11:33 AM Yicong Yang <yangyicong@xxxxxxxxxx> wrote: > > On 2022/9/11 17:06, Jianmin Lv wrote: > > In DT systems configurations, of_dma_get_range() returns struct > > bus_dma_region DMA regions; they are used to set-up devices > > DMA windows with different offset available for translation between DMA > > address and CPU address. > > > > In ACPI systems configuration, acpi_dma_get_range() does not return > > DMA regions yet and that precludes setting up the dev->dma_range_map > > pointer and therefore DMA regions with multiple offsets. > > > > Update acpi_dma_get_range() to return struct bus_dma_region > > DMA regions like of_dma_get_range() does. > > > > After updating acpi_dma_get_range(), acpi_arch_dma_setup() is changed for > > ARM64, where the original dma_addr and size are removed as these > > arguments are now redundant, and pass 0 and U64_MAX for dma_base > > and size of arch_setup_dma_ops; this is a simplification consistent > > with what other ACPI architectures also pass to iommu_setup_dma_ops(). > > > > Hi, > > With this patch we met problem as well. The DMA coherent mask is not set correctly > for a ehci usb controller and lead to the below calltrace: > > [ 16.699259] ------------[ cut here ]------------ > [ 16.703855] WARNING: CPU: 0 PID: 853 at kernel/dma/mapping.c:499 dma_alloc_attrs+0xc0/0xf0 > [ 16.712082] Modules linked in: > [ 16.715124] CPU: 0 PID: 853 Comm: kworker/0:3 Not tainted 6.1.0-rc1-pipe-deadlock+ #5 > [ 16.722916] Hardware name: Huawei TaiShan 2280 V2/BC82AMDC, BIOS 2280-V2 CS V5.B211.01 11/10/2021 > [ 16.731745] Workqueue: events work_for_cpu_fn > [ 16.736083] pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) > [ 16.743013] pc : dma_alloc_attrs+0xc0/0xf0 > [ 16.747091] lr : dma_pool_alloc+0x11c/0x200 > [ 16.751255] sp : ffff80001e46bb50 > [ 16.754554] x29: ffff80001e46bb50 x28: 0000000000000000 x27: 0000000000000000 > [ 16.761657] x26: ffff80000b33ce18 x25: ffff800009cc6c48 x24: 0000000000000000 > [ 16.768759] x23: ffff00208c830918 x22: 0000000000001000 x21: 0000000000000cc0 > [ 16.775861] x20: ffff00208ae82080 x19: ffff0020865c40d0 x18: 0000000000000030 > [ 16.782964] x17: 626d756e20737562 x16: 2064656e67697373 x15: ffff00208ae82640 > [ 16.790066] x14: 0000000000000000 x13: 646e756f72616b72 x12: 6f77204348207379 > [ 16.797167] x11: 73706f6e79532067 x10: ffff205f43980000 x9 : ffff80000830b3ac > [ 16.804269] x8 : ffff0020861b1b00 x7 : 0000000000000000 x6 : 0000000000000000 > [ 16.811371] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000cc0 > [ 16.818472] x2 : ffff00208c830918 x1 : 0000000000001000 x0 : 0000000000000000 > [ 16.825574] Call trace: > [ 16.828009] dma_alloc_attrs+0xc0/0xf0 > [ 16.831741] dma_pool_alloc+0x11c/0x200 > [ 16.835559] ehci_qh_alloc+0x60/0x12c > [ 16.839207] ehci_setup+0x18c/0x40c > [ 16.842680] ehci_pci_setup+0xb8/0x680 > [ 16.846412] usb_add_hcd+0x310/0x5c0 > [ 16.849973] usb_hcd_pci_probe+0x254/0x36c > [ 16.854051] ehci_pci_probe+0x40/0x60 > [ 16.857698] local_pci_probe+0x48/0xb4 > [ 16.861431] work_for_cpu_fn+0x24/0x40 > [ 16.865163] process_one_work+0x1e0/0x450 > [ 16.869155] worker_thread+0x2cc/0x44c > [ 16.872886] kthread+0x114/0x120 > [ 16.876099] ret_from_fork+0x10/0x20 > [ 16.879657] ---[ end trace 0000000000000000 ]--- > > After reverting this patch the problem resolved. Tested on the latest 6.1-rc1. OK, I'll queue up a revert of this and one more commit depending on it. Thanks!
