diff options
| author | Oliver O'Halloran <oohall@gmail.com> | 2020-07-25 18:12:20 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-07-26 23:34:20 +1000 |
| commit | dffa91539e80355402c0716a91af17fc8ddd1abf (patch) | |
| tree | b163e1f157c1ac4fbcd203f5aedea50f497c2cc3 /arch/powerpc/kernel | |
| parent | d74ee8e9d12e2071014ecec96a1ce2744f77639d (diff) | |
powerpc/eeh: Move vf_index out of pci_dn and into eeh_dev
Drivers that do not support the PCI error handling callbacks are handled by
tearing down the device and re-probing them. If the device being removed is
a virtual function then we need to know the VF index so it can be removed
using the pci_iov_{add|remove}_virtfn() API.
Currently this is handled by looking up the pci_dn, and using the vf_index
that was stashed there when the pci_dn for the VF was created in
pcibios_sriov_enable(). We would like to eliminate the use of pci_dn
outside of pseries though so we need to provide the generic EEH code with
some other way to find the vf_index.
The easiest thing to do here is move the vf_index field out of pci_dn and
into eeh_dev. Currently pci_dn and eeh_dev are allocated and initialized
together so this is a fairly minimal change in preparation for splitting
pci_dn and eeh_dev in the future.
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200725081231.39076-3-oohall@gmail.com
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/eeh_driver.c | 6 | ||||
| -rw-r--r-- | arch/powerpc/kernel/pci_dn.c | 7 |
2 files changed, 6 insertions, 7 deletions
diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c index 7b048cee767c..b70b9273f45a 100644 --- a/arch/powerpc/kernel/eeh_driver.c +++ b/arch/powerpc/kernel/eeh_driver.c @@ -477,7 +477,7 @@ static void *eeh_add_virt_device(struct eeh_dev *edev) } #ifdef CONFIG_PCI_IOV - pci_iov_add_virtfn(edev->physfn, eeh_dev_to_pdn(edev)->vf_index); + pci_iov_add_virtfn(edev->physfn, edev->vf_index); #endif return NULL; } @@ -521,9 +521,7 @@ static void eeh_rmv_device(struct eeh_dev *edev, void *userdata) if (edev->physfn) { #ifdef CONFIG_PCI_IOV - struct pci_dn *pdn = eeh_dev_to_pdn(edev); - - pci_iov_remove_virtfn(edev->physfn, pdn->vf_index); + pci_iov_remove_virtfn(edev->physfn, edev->vf_index); edev->pdev = NULL; #endif if (rmv_data) diff --git a/arch/powerpc/kernel/pci_dn.c b/arch/powerpc/kernel/pci_dn.c index f790a8d06f50..bf11ac8427ac 100644 --- a/arch/powerpc/kernel/pci_dn.c +++ b/arch/powerpc/kernel/pci_dn.c @@ -146,7 +146,6 @@ static struct eeh_dev *eeh_dev_init(struct pci_dn *pdn) #ifdef CONFIG_PCI_IOV static struct pci_dn *add_one_sriov_vf_pdn(struct pci_dn *parent, - int vf_index, int busno, int devfn) { struct pci_dn *pdn; @@ -163,7 +162,6 @@ static struct pci_dn *add_one_sriov_vf_pdn(struct pci_dn *parent, pdn->parent = parent; pdn->busno = busno; pdn->devfn = devfn; - pdn->vf_index = vf_index; pdn->pe_number = IODA_INVALID_PE; INIT_LIST_HEAD(&pdn->child_list); INIT_LIST_HEAD(&pdn->list); @@ -194,7 +192,7 @@ struct pci_dn *add_sriov_vf_pdns(struct pci_dev *pdev) for (i = 0; i < pci_sriov_get_totalvfs(pdev); i++) { struct eeh_dev *edev __maybe_unused; - pdn = add_one_sriov_vf_pdn(parent, i, + pdn = add_one_sriov_vf_pdn(parent, pci_iov_virtfn_bus(pdev, i), pci_iov_virtfn_devfn(pdev, i)); if (!pdn) { @@ -207,7 +205,10 @@ struct pci_dn *add_sriov_vf_pdns(struct pci_dev *pdev) /* Create the EEH device for the VF */ edev = eeh_dev_init(pdn); BUG_ON(!edev); + + /* FIXME: these should probably be populated by the EEH probe */ edev->physfn = pdev; + edev->vf_index = i; #endif /* CONFIG_EEH */ } return pci_get_pdn(pdev); |