Bug 88131
| Summary: | PCI device intel ixgbe and xhci with 64-bit bar address can NOT work on x86_32 PAE kernel. | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Pengyu Ma (mapengyu) |
| Component: | PCI | Assignee: | drivers_pci (drivers_pci) |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | normal | CC: | bjorn, mapengyu, yinghai |
| Priority: | P1 | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Kernel Version: | 3.18-rc4 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
dmesg
PCI: Don't reject 64bit mmio on 32bit/PAE mode RFC: x86, PCI: support mmio more than 44 bits on 32bit/PAE mode ixgbe and xhci failed after applied 2 patches v2 x86, PCI: support mmio more than 44 bit on 32bit/PAE mode boot OK with v2 patches patch that force reassign that could cause xhci hang 3.18-rc4 with 3 patches boot hang disable_usb_legacy_early_2014_11_19 with 2 patches boot ok disable_usb_legacy_early_2014_11_19 with 3 patches boot hang |
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Created attachment 157461 [details]
PCI: Don't reject 64bit mmio on 32bit/PAE mode
Created attachment 157471 [details]
RFC: x86, PCI: support mmio more than 44 bits on 32bit/PAE mode
Please try the two patches at the same time. Created attachment 157481 [details]
ixgbe and xhci failed after applied 2 patches
load ixgbe and xhci failed after applied 2 patches.
Please check the dmesg.
Thanks.
Created attachment 157491 [details]
v2 x86, PCI: support mmio more than 44 bit on 32bit/PAE mode
more simple version to fix ioremap on 32bit/PAE on MMIO above 44bits
v2 patch with the pci patch are working well now. Thanks for Yinghai's great help. I think you will send these patches to ml kernel. When will they can be integrated? Can you attached boot log after two patches? Created attachment 157511 [details]
boot OK with v2 patches
Thers is a error log after hours running:
"UDP: bad checksum. From 128.224.179.59:1534 to 128.224.179.255:1534 ulen 261"
Created attachment 157651 [details]
patch that force reassign that could cause xhci hang
for completeness...here is that previous patch that cause xhci hang and it is
replaced by "x86, PCI: support mmio more than 44 bit on 32bit/PAE mode"
Created attachment 158171 [details]
3.18-rc4 with 3 patches boot hang
patch1: PCI: Don't reject 64bit mmio on 32bit/PAE mode
patch2: v2 x86, PCI: support mmio more than 44 bit on 32bit/PAE mode
patch3: patch that force reassign that could cause xhci hang
With above 3 patches to kernel 3.18-rc4
boot hang
How about only with patch1: PCI: Don't reject 64bit mmio on 32bit/PAE mode patch2: v2 x86, PCI: support mmio more than 44 bit on 32bit/PAE mode ? I have attached the boot log "Created attachment 157511 [details] boot OK with v2 patches"
Boot OK, but sometimes it print:
"UDP: bad checksum. From 128.224.179.59:1534 to 128.224.179.255:1534 ulen 261"
ixgbe and xhci can work.
Please use patch 1, 2, 3 on top of git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git disable_usb_legacy_early_2014_11_19 https://git.kernel.org/cgit/linux/kernel/git/yinghai/linux-yinghai.git/log/?h=disable_usb_legacy_early_2014_11_19 Created attachment 158241 [details]
disable_usb_legacy_early_2014_11_19 with 2 patches boot ok
ixgbe and xhci work well.
Do you mean disable_usb_legacy_early_2014_11_19 + patch1: PCI: Don't reject 64bit mmio on 32bit/PAE mode patch2: v2 x86, PCI: support mmio more than 44 bit on 32bit/PAE mode or disable_usb_legacy_early_2014_11_19 + patch1: PCI: Don't reject 64bit mmio on 32bit/PAE mode patch3: patch that force reassign that could cause xhci hang ? With: patch1: PCI: Don't reject 64bit mmio on 32bit/PAE mode patch2: v2 x86, PCI: support mmio more than 44 bit on 32bit/PAE mode No patch3, I will test patch 3 now. Created attachment 158251 [details]
disable_usb_legacy_early_2014_11_19 with 3 patches boot hang
with patches on branch disable_usb_legacy_early_2014_11_19:
patch1: PCI: Don't reject 64bit mmio on 32bit/PAE mode
patch2: v2 x86, PCI: support mmio more than 44 bit on 32bit/PAE mode
patch3: patch that force reassign that could cause xhci hang
Boot hang after:
calling quirk_usb_early_handoff+0x0/0x1f0 @ 1 for 0000:00:14.0
ok, then we will have to use patch1+patch2. patch 1 will be mainline via pci/for-linus. patch 2 may need some time... I think this should be resolved by: 7fc986d8a972 PCI: Support 64-bit bridge windows if we have 64-bit dma_addr_t which appeared in v3.18. I'm closing this on that assumption. If this is still a problem on v3.18 or later, please reopen or report as a new bug. |
Created attachment 157441 [details] dmesg PCI device intel ixgbe and xhci with 64-bit bar address can NOT work on x86_32 kernel. The bar0 base address of intel ixgbe ethernet card and xhci are above 4G. The commit d56dbf5bab8ce44c5407bb099f71987f58d18bb4 try to map the resource above 4G. Enabled PAE and HIGHMEM64G, it should support 64-bit BAR, but failed on high bar address.