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| author | Gavin Shan <gwshan@linux.vnet.ibm.com> | 2017-02-20 10:57:50 +1100 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-02-22 16:51:18 +1100 |
| commit | 99343c26ac8c6e49041bd2718c8b16e5d664f8fd (patch) | |
| tree | facf02e39b1a468f2f4686acaf26ac556f3d1d09 /include/pci-slot.h | |
| parent | aa295110d9487d2b4b3ff31b6369bf59e1cba824 (diff) | |
| download | skiboot-99343c26ac8c6e49041bd2718c8b16e5d664f8fd.zip skiboot-99343c26ac8c6e49041bd2718c8b16e5d664f8fd.tar.gz skiboot-99343c26ac8c6e49041bd2718c8b16e5d664f8fd.tar.bz2 | |
astbmc/p8dnu: Enable PCI slot's power supply on PEX9733 in hot-add path
This issue is reported from superMicro's "p8dnu" platform. PEX9733
is connected to PHB direct slot. We create dynamic PCI slots for
its (5) downstream ports and all of them support surprise hotplug
capability. The problem is power supply lost on hot-remove and it
isn't turned on automatically on hot-add. It means the PCIe link
behind the slot isn't up and the PCI adapter behind the slot can't
be probed successfully.
This fixes the issue by forcing to turn on the power supply on
hardware when user (kernel) requests to do so. Those PCI slots
are identified by additional flag (PCI_SLOT_FLAG_FORCE_POWERON).
Reported-by: Hank Chang <hankmax0000@gmail.com>
Signed-off-by: Gavin Shan <gwhsan@linux.vnet.ibm.com>
Tested-by: Willie Liauw <williel@supermicro.com.tw>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'include/pci-slot.h')
| -rw-r--r-- | include/pci-slot.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/pci-slot.h b/include/pci-slot.h index ce3e8dd..7f16ddd 100644 --- a/include/pci-slot.h +++ b/include/pci-slot.h @@ -146,6 +146,7 @@ struct pci_slot_ops { struct pci_slot { uint32_t flags; #define PCI_SLOT_FLAG_BOOTUP 0x1 +#define PCI_SLOT_FLAG_FORCE_POWERON 0x2 struct phb *phb; struct pci_device *pd; |