xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

cxl: Add support for using the kernel API with a real PHB

Browse Source 
This hooks up support for using the kernel API with a real PHB. After
the AFU initialisation has completed it calls into the PHB code to pass
it the AFU that will be used by other peer physical functions on the
adapter.

The cxl_pci_to_afu API is extended to work with peer PCI devices,
retrieving the peer AFU from the PHB. This API may also now return an
error if it is called on a PCI device that is not associated with either
a cxl vPHB or a peer PCI device to an AFU, and this error is propagated
down.

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Ian Munsie
2016-07-14 07:17:07 +10:00
committed by Michael Ellerman
parent 4361b03430
commit 317f5ef1b3
3 changed files with 22 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/misc/cxl/pci.c
View File

@@ -1502,6 +1502,9 @@ static int cxl_probe(struct pci_dev *dev, const struct pci_device_id *id)
dev_err(&dev->dev, "AFU %i failed to start: %i\n", slice, rc);
}
if (pnv_pci_on_cxl_phb(dev) && adapter->slices >= 1)
pnv_cxl_phb_set_peer_afu(dev, adapter->afu[0]);
return 0;
}