Hi John Am 10.01.20 um 13:54 schrieb John Garry: > > > Hi Thomas, > >> drm-tip now contains > > I have tested today's linux-next, which includes this: > >> >> commit a88248506a2bcfeaef6837a53cde19fe11970e6c >> Author: Thomas Zimmermann <tzimmermann@xxxxxxx> >> Date: Tue Dec 3 09:38:15 2019 +0100 >> >> drm/hisilicon/hibmc: Switch to generic fbdev emulation >> >> which removes this entire code and switches hibmc to generic fbdev >> emulation. Does that fix the problem? >> > > And I see no warn, here's a dmesg snippet: Great. So I'll consider this fixed. Thanks for reporting ad testing. Best regards Thomas > > [ 20.672787] pci 0007:90:00.0: can't derive routing for PCI INT A > [ 20.678831] hibmc-drm 0007:91:00.0: PCI INT A: no GSI > [ 20.686536] pci_bus 0007:90: 2-byte config write to 0007:90:00.0 > offset 0x4 may corrupt adjacent RW1C bits > [ 20.696888] [TTM] Zone kernel: Available graphics memory: 57359458 KiB > [ 20.703545] [TTM] Zone dma32: Available graphics memory: 2097152 KiB > [ 20.710108] [TTM] Initializing pool allocator > [ 20.714561] [TTM] Initializing DMA pool allocator > [ 20.720212] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). > [ 20.726863] [drm] No driver support for vblank timestamp query. > [ 20.754777] Console: switching to colour frame buffer device 100x37 > [ 20.778180] hibmc-drm 0007:91:00.0: fb0: hibmcdrmfb frame buffer device > [ 20.786447] [drm] Initialized hibmc 1.0.0 20160828 for 0007:91:00.0 > on minor 0 > [ 20.794346] Console: switching to colour dummy device 80x25 > [ 20.801884] pci 0007:90:00.0: can't derive routing for PCI INT A > [ 20.807963] hibmc-drm 0007:91:00.0: PCI INT A: no GSI > [ 20.813656] [TTM] Finalizing pool allocator > [ 20.817905] [TTM] Finalizing DMA pool allocator > [ 20.822576] [TTM] Zone kernel: Used memory at exit: 0 KiB > [ 20.828760] [TTM] Zone dma32: Used memory at exit: 0 KiB > [ 20.834978] pci 0007:90:00.0: can't derive routing for PCI INT A > [ 20.841021] hibmc-drm 0007:91:00.0: PCI INT A: no GSI > [ 20.848858] [TTM] Zone kernel: Available graphics memory: 57359458 KiB > [ 20.855516] [TTM] Zone dma32: Available graphics memory: 2097152 KiB > [ 20.862079] [TTM] Initializing pool allocator > [ 20.866525] [TTM] Initializing DMA pool allocator > [ 20.872064] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). > [ 20.878716] [drm] No driver support for vblank timestamp query. > [ 20.905996] Console: switching to colour frame buffer device 100x37 > [ 20.929385] hibmc-drm 0007:91:00.0: fb0: hibmcdrmfb frame buffer device > [ 20.937241] [drm] Initialized hibmc 1.0.0 20160828 for 0007:91:00.0 > on minor 0 > [ 21.171906] loop: module loaded > > Thanks, > John > >> Best regards >> Thomas >> >>> [ 27.965802] hibmc_unload+0x2c/0xd0 >>> [ 27.969281] hibmc_pci_remove+0x2c/0x40 >>> [ 27.973109] pci_device_remove+0x6c/0x140 >>> [ 27.977110] really_probe+0x174/0x548 >>> [ 27.980763] driver_probe_device+0x7c/0x148 >>> [ 27.984936] device_driver_attach+0x94/0xa0 >>> [ 27.989109] __driver_attach+0xa8/0x110 >>> [ 27.992935] bus_for_each_dev+0xe8/0x158 >>> [ 27.996849] driver_attach+0x30/0x40 >>> [ 28.000415] bus_add_driver+0x234/0x2f0 >>> [ 28.004241] driver_register+0xbc/0x1d0 >>> [ 28.008067] __pci_register_driver+0xbc/0xd0 >>> [ 28.012329] hibmc_pci_driver_init+0x20/0x28 >>> [ 28.016590] do_one_initcall+0xb4/0x254 >>> [ 28.020417] kernel_init_freeable+0x27c/0x328 >>> [ 28.024765] kernel_init+0x10/0x118 >>> [ 28.028245] ret_from_fork+0x10/0x18 >>> [ 28.031813] ---[ end trace 35a83b71b657878d ]--- >>> [ 28.036503] ------------[ cut here ]------------ >>> [ 28.041115] WARNING: CPU: 24 PID: 1 at >>> drivers/gpu/drm/drm_gem_vram_helper.c:40 >>> ttm_buffer_object_destroy+0x4c/0x80 >>> [ 28.051537] Modules linked in: >>> [ 28.054585] CPU: 24 PID: 1 Comm: swapper/0 Tainted: G B W >>> 5.5.0-rc1-dirty #565 >>> [ 28.062924] Hardware name: Huawei D06 /D06, BIOS Hisilicon D06 UEFI >>> RC0 - V1.16.01 03/15/2019 >>> >>> [snip] >>> >>> Indeed, simply unbinding the device from the driver causes the same sort >>> of issue: >>> >>> root@(none)$ cd ./bus/pci/drivers/hibmc-drm/ >>> root@(none)$ ls >>> 0000:05:00.0 bind new_id remove_id uevent >>> unbind >>> root@(none)$ echo 0000\:05\:00.0 > unbind >>> [ 116.074352] ------------[ cut here ]------------ >>> [ 116.078978] WARNING: CPU: 17 PID: 1178 at >>> drivers/gpu/drm/drm_gem_vram_helper.c:40 >>> ttm_buffer_object_destroy+0x4c/0x80 >>> [ 116.089661] Modules linked in: >>> [ 116.092711] CPU: 17 PID: 1178 Comm: sh Tainted: G B W >>> 5.5.0-rc1-dirty #565 >>> [ 116.100704] Hardware name: Huawei D06 /D06, BIOS Hisilicon D06 UEFI >>> RC0 - V1.16.01 03/15/2019 >>> [ 116.109218] pstate: 20400009 (nzCv daif +PAN -UAO) >>> [ 116.114001] pc : ttm_buffer_object_destroy+0x4c/0x80 >>> [ 116.118956] lr : ttm_buffer_object_destroy+0x18/0x80 >>> [ 116.123910] sp : ffff0022e6cef8e0 >>> [ 116.127215] x29: ffff0022e6cef8e0 x28: ffff00231b1fb000 >>> [ 116.132519] x27: 0000000000000000 x26: ffff00231b1fb000 >>> [ 116.137821] x25: ffff0022e6cefdc0 x24: 0000000000002480 >>> [ 116.143124] x23: ffff0023682b6ab0 x22: ffff0023682b6800 >>> [ 116.148427] x21: ffff0023682b6800 x20: 0000000000000000 >>> [ 116.153730] x19: ffff0023682b6800 x18: 0000000000000000 >>> [ 116.159032] x17: 000000000000000000000000001 >>> [ 116.185545] x7 : ffff0023682b6b07 x6 : ffff80046d056d61 >>> [ 116.190848] x5 : ffff80046d056d61 x4 : ffff0023682b6ba0 >>> [ 116.196151] x3 : ffffa00010197338 x2 : dfffa00000000000 >>> [ 116.201453] x1 : 0000000000000003 x0 : 0000000000000001 >>> [ 116.206756] Call trace: >>> [ 116.209195] ttm_buffer_object_destroy+0x4c/0x80 >>> [ 116.213803] ttm_bo_release_list+0x184/0x220 >>> [ 116.218064] ttm_bo_put+0x410/0x5d0 >>> [ 116.221544] drm_gem_vram_object_free+0xc/0x18 >>> [ 116.225979] drm_gem_object_free+0x34/0xd0 >>> [ 116.230066] drm_gem_object_put_unlocked+0xc8/0xf0 >>> [ 116.234848] hibmc_user_framebuffer_destroy+0x20/0x40 >>> [ 116.239890] drm_framebuffer_free+0x48/0x58 >>> [ 116.244064] drm_mode_object_put.part.1+0x90/0xe8 >>> [ 116.248759] drm_mode_object_put+0x28/0x38 >>> [ 116.252846] hibmc_fbdev_fini+0x54/0x78 >>> [ 116.256672] hibmc_unload+0x2c/0xd0 >>> [ 116.260151] hibmc_pci_remove+0x2c/0x40 >>> [ 116.263979] pci_device_remove+0x6c/0x140 >>> [ 116.267980] device_release_driver_internal+0x134/0x250 >>> [ 116.273196] device_driver_detach+0x28/0x38 >>> [ 116.277369] unbind_store+0xfc/0x150 >>> [ 116.280934] drv_attr_store+0x48/0x60 >>> [ 116.284589] sysfs_kf_write+0x80/0xb0 >>> [ 116.288241] kernfs_fop_write+0x1d4/0x320 >>> [ 116.292243] __vfs_write+0x54/0x98 >>> [ 116.295635] vfs_write+0xe8/0x270 >>> [ 116.298940] ksys_write+0xc8/0x180 >>> [ 116.302333] __arm64_sys_write+0x40/0x50 >>> [ 116.306248] el0_svc_common.constprop.0+0xa4/0x1f8 >>> [ 116.311029] el0_svc_handler+0x34/0xb0 >>> [ 116.314770] el0_sync_handler+0x10c/0x1c8 >>> [ 116.318769] el0_sync+0x140/0x180 >>> [ 116.322074] ---[ end trace e60e43d0e316b5c8 ]--- >>> [ 116.326868] ------------[ cut here ]------------ >>> >>> >>> dmesg and .config is here: >>> https://pastebin.com/4P5yaZBS >>> >>> I'm not sure if this is a HIBMC driver issue or issue with the >>> framework. >>> >>> john >>> >>> >>> _______________________________________________ >>> dri-devel mailing list >>> dri-devel@xxxxxxxxxxxxxxxxxxxxx >>> https://lists.freedesktop.org/mailman/listinfo/dri-devel >> > > _______________________________________________ > dri-devel mailing list > dri-devel@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/dri-devel -- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Felix Imendörffer
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