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HV: unify the sharing mode and partition mode coding style for similar functions

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Both sharing mode and partition mode should follow the same coding logic/style
for similar functions:

vdev cfgread/cfgwrite: should all return -ENODEV if the pci reg access is not handled by
it, but previously the partition mode code is not following this logic

vpci cfgread/cfgwrite: if the vdev cfgread/cfgwrite does not handle this reg,
pass on to next vdev cfgread/cfgwrite, if no vdev handles that req, passthru to
physical pci device

Tracked-On: #2534
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
dongshen
2019-03-06 16:54:01 -08:00
committed by Eddie Dong
parent 026250fd8a
commit 71ce4c255e
5 changed files with 19 additions and 25 deletions
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6
hypervisor/dm/vpci/partition_mode.c
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@@ -149,7 +149,8 @@ void partition_mode_cfgread(struct acrn_vpci *vpci, union pci_bdf vbdf,
}
} else {
if (vdev_pt_cfgread(vdev, offset, bytes, val) != 0) {
pr_err("vdev_pt_cfgread failed!");
/* Not handled by any handlers, passthru to physical device */
*val = pci_pdev_read_cfg(vdev->pdev->bdf, offset, bytes);
}
}
}
@@ -167,7 +168,8 @@ void partition_mode_cfgwrite(struct acrn_vpci *vpci, union pci_bdf vbdf,
}
} else {
if (vdev_pt_cfgwrite(vdev, offset, bytes, val) != 0){
pr_err("vdev_pt_cfgwrite failed!");
/* Not handled by any handlers, passthru to physical device */
pci_pdev_write_cfg(vdev->pdev->bdf, offset, bytes, val);
}
}
}