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powerpc/eeh: Improve debug messages around device addition 

Also remove useless comment.

Signed-off-by: Sam Bobroff <sbobroff@linux.ibm.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/59db84f4bf94718a12f206bc923ac797d47e4cc1.1565930772.git.sbobroff@linux.ibm.com
This commit is contained in:
Sam Bobroff 2019-08-16 14:48:07 +10:00 committed by Michael Ellerman
parent aa06e3d60e
commit 617082a481
3 changed files with 28 additions and 11 deletions
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2
arch/powerpc/kernel/eeh.c
View File

@ -1198,7 +1198,7 @@ void eeh_add_device_late(struct pci_dev *dev)
pdn = pci_get_pdn_by_devfn(dev->bus, dev->devfn);
edev = pdn_to_eeh_dev(pdn);
if (edev->pdev == dev) {
pr_debug("EEH: Already referenced !\n");
pr_debug("EEH: Device %s already referenced!\n", pci_name(dev));
return;
}

14
arch/powerpc/platforms/powernv/eeh-powernv.c
View File

@ -44,10 +44,7 @@ void pnv_pcibios_bus_add_device(struct pci_dev *pdev)
if (!pdev->is_virtfn)
return;
/*
* The following operations will fail if VF's sysfs files
* aren't created or its resources aren't finalized.
*/
pr_debug("%s: EEH: Setting up device %s.\n", __func__, pci_name(pdev));
eeh_add_device_early(pdn);
eeh_add_device_late(pdev);
eeh_sysfs_add_device(pdev);
@ -364,6 +361,10 @@ static void *pnv_eeh_probe(struct pci_dn *pdn, void *data)
int ret;
int config_addr = (pdn->busno << 8) | (pdn->devfn);
pr_debug("%s: probing %04x:%02x:%02x.%01x\n",
__func__, hose->global_number, pdn->busno,
PCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn));
/*
* When probing the root bridge, which doesn't have any
* subordinate PCI devices. We don't have OF node for
@ -458,6 +459,11 @@ static void *pnv_eeh_probe(struct pci_dn *pdn, void *data)
/* Save memory bars */
eeh_save_bars(edev);
pr_debug("%s: EEH enabled on %02x:%02x.%01x PHB#%x-PE#%x\n",
__func__, pdn->busno, PCI_SLOT(pdn->devfn),
PCI_FUNC(pdn->devfn), edev->pe->phb->global_number,
edev->pe->addr);
return NULL;
}

23
arch/powerpc/platforms/pseries/eeh_pseries.c
View File

@ -52,6 +52,8 @@ void pseries_pcibios_bus_add_device(struct pci_dev *pdev)
if (!pdev->is_virtfn)
return;
pr_debug("%s: EEH: Setting up device %s.\n", __func__, pci_name(pdev));
pdn->device_id = pdev->device;
pdn->vendor_id = pdev->vendor;
pdn->class_code = pdev->class;
@ -238,6 +240,10 @@ static void *pseries_eeh_probe(struct pci_dn *pdn, void *data)
int enable = 0;
int ret;
pr_debug("%s: probing %04x:%02x:%02x.%01x\n",
__func__, pdn->phb->global_number, pdn->busno,
PCI_SLOT(pdn->devfn), PCI_FUNC(pdn->devfn));
/* Retrieve OF node and eeh device */
edev = pdn_to_eeh_dev(pdn);
if (!edev || edev->pe)
@ -281,7 +287,12 @@ static void *pseries_eeh_probe(struct pci_dn *pdn, void *data)
/* Enable EEH on the device */
ret = eeh_ops->set_option(&pe, EEH_OPT_ENABLE);
if (!ret) {
if (ret) {
pr_debug("%s: EEH failed to enable on %02x:%02x.%01x PHB#%x-PE#%x (code %d)\n",
__func__, pdn->busno, PCI_SLOT(pdn->devfn),
PCI_FUNC(pdn->devfn), pe.phb->global_number,
pe.addr, ret);
} else {
/* Retrieve PE address */
edev->pe_config_addr = eeh_ops->get_pe_addr(&pe);
pe.addr = edev->pe_config_addr;
@ -297,11 +308,6 @@ static void *pseries_eeh_probe(struct pci_dn *pdn, void *data)
if (enable) {
eeh_add_flag(EEH_ENABLED);
eeh_add_to_parent_pe(edev);
pr_debug("%s: EEH enabled on %02x:%02x.%01x PHB#%x-PE#%x\n",
__func__, pdn->busno, PCI_SLOT(pdn->devfn),
PCI_FUNC(pdn->devfn), pe.phb->global_number,
pe.addr);
} else if (pdn->parent && pdn_to_eeh_dev(pdn->parent) &&
(pdn_to_eeh_dev(pdn->parent))->pe) {
/* This device doesn't support EEH, but it may have an
@ -310,6 +316,11 @@ static void *pseries_eeh_probe(struct pci_dn *pdn, void *data)
edev->pe_config_addr = pdn_to_eeh_dev(pdn->parent)->pe_config_addr;
eeh_add_to_parent_pe(edev);
}
pr_debug("%s: EEH %s on %02x:%02x.%01x PHB#%x-PE#%x (code %d)\n",
__func__, (enable ? "enabled" : "unsupported"),
pdn->busno, PCI_SLOT(pdn->devfn),
PCI_FUNC(pdn->devfn), pe.phb->global_number,
pe.addr, ret);
}
/* Save memory bars */