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powerpc/powernv: Move PHB-diag dump functions around

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Prior to the completion of PCI enumeration, we actively detects
EEH errors on PCI config cycles and dump PHB diag-data if necessary.
The EEH backend also dumps PHB diag-data in case of frozen PE or
fenced PHB. However, we are using different functions to dump the
PHB diag-data for those 2 cases.

The patch merges the functions for dumping PHB diag-data to one so
that we can avoid duplicate code. Also, we never dump PHB3 diag-data
during PCI config cycles with frozen PE. The patch fixes it as well.

Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Gavin Shan 2013-11-22 16:28:45 +08:00 committed by Benjamin Herrenschmidt
parent d905c5df9a
commit 93aef2a789
3 changed files with 140 additions and 201 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

150
arch/powerpc/platforms/powernv/eeh-ioda.c
View File

@ -681,164 +681,20 @@ static void ioda_eeh_hub_diag(struct pci_controller *hose)
}
}
static void ioda_eeh_p7ioc_phb_diag(struct pci_controller *hose,
struct OpalIoPhbErrorCommon *common)
{
struct OpalIoP7IOCPhbErrorData *data;
int i;
data = (struct OpalIoP7IOCPhbErrorData *)common;
pr_info("P7IOC PHB#%x Diag-data (Version: %d)\n\n",
hose->global_number, common->version);
pr_info(" brdgCtl: %08x\n", data->brdgCtl);
pr_info(" portStatusReg: %08x\n", data->portStatusReg);
pr_info(" rootCmplxStatus: %08x\n", data->rootCmplxStatus);
pr_info(" busAgentStatus: %08x\n", data->busAgentStatus);
pr_info(" deviceStatus: %08x\n", data->deviceStatus);
pr_info(" slotStatus: %08x\n", data->slotStatus);
pr_info(" linkStatus: %08x\n", data->linkStatus);
pr_info(" devCmdStatus: %08x\n", data->devCmdStatus);
pr_info(" devSecStatus: %08x\n", data->devSecStatus);
pr_info(" rootErrorStatus: %08x\n", data->rootErrorStatus);
pr_info(" uncorrErrorStatus: %08x\n", data->uncorrErrorStatus);
pr_info(" corrErrorStatus: %08x\n", data->corrErrorStatus);
pr_info(" tlpHdr1: %08x\n", data->tlpHdr1);
pr_info(" tlpHdr2: %08x\n", data->tlpHdr2);
pr_info(" tlpHdr3: %08x\n", data->tlpHdr3);
pr_info(" tlpHdr4: %08x\n", data->tlpHdr4);
pr_info(" sourceId: %08x\n", data->sourceId);
pr_info(" errorClass: %016llx\n", data->errorClass);
pr_info(" correlator: %016llx\n", data->correlator);
pr_info(" p7iocPlssr: %016llx\n", data->p7iocPlssr);
pr_info(" p7iocCsr: %016llx\n", data->p7iocCsr);
pr_info(" lemFir: %016llx\n", data->lemFir);
pr_info(" lemErrorMask: %016llx\n", data->lemErrorMask);
pr_info(" lemWOF: %016llx\n", data->lemWOF);
pr_info(" phbErrorStatus: %016llx\n", data->phbErrorStatus);
pr_info(" phbFirstErrorStatus: %016llx\n", data->phbFirstErrorStatus);
pr_info(" phbErrorLog0: %016llx\n", data->phbErrorLog0);
pr_info(" phbErrorLog1: %016llx\n", data->phbErrorLog1);
pr_info(" mmioErrorStatus: %016llx\n", data->mmioErrorStatus);
pr_info(" mmioFirstErrorStatus: %016llx\n", data->mmioFirstErrorStatus);
pr_info(" mmioErrorLog0: %016llx\n", data->mmioErrorLog0);
pr_info(" mmioErrorLog1: %016llx\n", data->mmioErrorLog1);
pr_info(" dma0ErrorStatus: %016llx\n", data->dma0ErrorStatus);
pr_info(" dma0FirstErrorStatus: %016llx\n", data->dma0FirstErrorStatus);
pr_info(" dma0ErrorLog0: %016llx\n", data->dma0ErrorLog0);
pr_info(" dma0ErrorLog1: %016llx\n", data->dma0ErrorLog1);
pr_info(" dma1ErrorStatus: %016llx\n", data->dma1ErrorStatus);
pr_info(" dma1FirstErrorStatus: %016llx\n", data->dma1FirstErrorStatus);
pr_info(" dma1ErrorLog0: %016llx\n", data->dma1ErrorLog0);
pr_info(" dma1ErrorLog1: %016llx\n", data->dma1ErrorLog1);
for (i = 0; i < OPAL_P7IOC_NUM_PEST_REGS; i++) {
if ((data->pestA[i] >> 63) == 0 &&
(data->pestB[i] >> 63) == 0)
continue;
pr_info(" PE[%3d] PESTA: %016llx\n", i, data->pestA[i]);
pr_info(" PESTB: %016llx\n", data->pestB[i]);
}
}
static void ioda_eeh_phb3_phb_diag(struct pci_controller *hose,
struct OpalIoPhbErrorCommon *common)
{
struct OpalIoPhb3ErrorData *data;
int i;
data = (struct OpalIoPhb3ErrorData*)common;
pr_info("PHB3 PHB#%x Diag-data (Version: %d)\n\n",
hose->global_number, common->version);
pr_info(" brdgCtl: %08x\n", data->brdgCtl);
pr_info(" portStatusReg: %08x\n", data->portStatusReg);
pr_info(" rootCmplxStatus: %08x\n", data->rootCmplxStatus);
pr_info(" busAgentStatus: %08x\n", data->busAgentStatus);
pr_info(" deviceStatus: %08x\n", data->deviceStatus);
pr_info(" slotStatus: %08x\n", data->slotStatus);
pr_info(" linkStatus: %08x\n", data->linkStatus);
pr_info(" devCmdStatus: %08x\n", data->devCmdStatus);
pr_info(" devSecStatus: %08x\n", data->devSecStatus);
pr_info(" rootErrorStatus: %08x\n", data->rootErrorStatus);
pr_info(" uncorrErrorStatus: %08x\n", data->uncorrErrorStatus);
pr_info(" corrErrorStatus: %08x\n", data->corrErrorStatus);
pr_info(" tlpHdr1: %08x\n", data->tlpHdr1);
pr_info(" tlpHdr2: %08x\n", data->tlpHdr2);
pr_info(" tlpHdr3: %08x\n", data->tlpHdr3);
pr_info(" tlpHdr4: %08x\n", data->tlpHdr4);
pr_info(" sourceId: %08x\n", data->sourceId);
pr_info(" errorClass: %016llx\n", data->errorClass);
pr_info(" correlator: %016llx\n", data->correlator);
pr_info(" nFir: %016llx\n", data->nFir);
pr_info(" nFirMask: %016llx\n", data->nFirMask);
pr_info(" nFirWOF: %016llx\n", data->nFirWOF);
pr_info(" PhbPlssr: %016llx\n", data->phbPlssr);
pr_info(" PhbCsr: %016llx\n", data->phbCsr);
pr_info(" lemFir: %016llx\n", data->lemFir);
pr_info(" lemErrorMask: %016llx\n", data->lemErrorMask);
pr_info(" lemWOF: %016llx\n", data->lemWOF);
pr_info(" phbErrorStatus: %016llx\n", data->phbErrorStatus);
pr_info(" phbFirstErrorStatus: %016llx\n", data->phbFirstErrorStatus);
pr_info(" phbErrorLog0: %016llx\n", data->phbErrorLog0);
pr_info(" phbErrorLog1: %016llx\n", data->phbErrorLog1);
pr_info(" mmioErrorStatus: %016llx\n", data->mmioErrorStatus);
pr_info(" mmioFirstErrorStatus: %016llx\n", data->mmioFirstErrorStatus);
pr_info(" mmioErrorLog0: %016llx\n", data->mmioErrorLog0);
pr_info(" mmioErrorLog1: %016llx\n", data->mmioErrorLog1);
pr_info(" dma0ErrorStatus: %016llx\n", data->dma0ErrorStatus);
pr_info(" dma0FirstErrorStatus: %016llx\n", data->dma0FirstErrorStatus);
pr_info(" dma0ErrorLog0: %016llx\n", data->dma0ErrorLog0);
pr_info(" dma0ErrorLog1: %016llx\n", data->dma0ErrorLog1);
pr_info(" dma1ErrorStatus: %016llx\n", data->dma1ErrorStatus);
pr_info(" dma1FirstErrorStatus: %016llx\n", data->dma1FirstErrorStatus);
pr_info(" dma1ErrorLog0: %016llx\n", data->dma1ErrorLog0);
pr_info(" dma1ErrorLog1: %016llx\n", data->dma1ErrorLog1);
for (i = 0; i < OPAL_PHB3_NUM_PEST_REGS; i++) {
if ((data->pestA[i] >> 63) == 0 &&
(data->pestB[i] >> 63) == 0)
continue;
pr_info(" PE[%3d] PESTA: %016llx\n", i, data->pestA[i]);
pr_info(" PESTB: %016llx\n", data->pestB[i]);
}
}
static void ioda_eeh_phb_diag(struct pci_controller *hose)
{
struct pnv_phb *phb = hose->private_data;
struct OpalIoPhbErrorCommon *common;
long rc;
common = (struct OpalIoPhbErrorCommon *)phb->diag.blob;
rc = opal_pci_get_phb_diag_data2(phb->opal_id, common, PAGE_SIZE);
rc = opal_pci_get_phb_diag_data2(phb->opal_id, phb->diag.blob,
PNV_PCI_DIAG_BUF_SIZE);
if (rc != OPAL_SUCCESS) {
pr_warning("%s: Failed to get diag-data for PHB#%x (%ld)\n",
__func__, hose->global_number, rc);
return;
}
switch (common->ioType) {
case OPAL_PHB_ERROR_DATA_TYPE_P7IOC:
ioda_eeh_p7ioc_phb_diag(hose, common);
break;
case OPAL_PHB_ERROR_DATA_TYPE_PHB3:
ioda_eeh_phb3_phb_diag(hose, common);
break;
default:
pr_warning("%s: Unrecognized I/O chip %d\n",
__func__, common->ioType);
}
pnv_pci_dump_phb_diag_data(hose, phb->diag.blob);
}
static int ioda_eeh_get_phb_pe(struct pci_controller *hose,

188
arch/powerpc/platforms/powernv/pci.c
View File

@ -124,77 +124,157 @@ static void pnv_teardown_msi_irqs(struct pci_dev *pdev)
}
#endif /* CONFIG_PCI_MSI */
static void pnv_pci_dump_p7ioc_diag_data(struct pnv_phb *phb)
static void pnv_pci_dump_p7ioc_diag_data(struct pci_controller *hose,
struct OpalIoPhbErrorCommon *common)
{
struct OpalIoP7IOCPhbErrorData *data = &phb->diag.p7ioc;
struct OpalIoP7IOCPhbErrorData *data;
int i;
pr_info("PHB %d diagnostic data:\n", phb->hose->global_number);
data = (struct OpalIoP7IOCPhbErrorData *)common;
pr_info("P7IOC PHB#%d Diag-data (Version: %d)\n\n",
hose->global_number, common->version);
pr_info(" brdgCtl = 0x%08x\n", data->brdgCtl);
pr_info(" brdgCtl: %08x\n", data->brdgCtl);
pr_info(" portStatusReg = 0x%08x\n", data->portStatusReg);
pr_info(" rootCmplxStatus = 0x%08x\n", data->rootCmplxStatus);
pr_info(" busAgentStatus = 0x%08x\n", data->busAgentStatus);
pr_info(" portStatusReg: %08x\n", data->portStatusReg);
pr_info(" rootCmplxStatus: %08x\n", data->rootCmplxStatus);
pr_info(" busAgentStatus: %08x\n", data->busAgentStatus);
pr_info(" deviceStatus = 0x%08x\n", data->deviceStatus);
pr_info(" slotStatus = 0x%08x\n", data->slotStatus);
pr_info(" linkStatus = 0x%08x\n", data->linkStatus);
pr_info(" devCmdStatus = 0x%08x\n", data->devCmdStatus);
pr_info(" devSecStatus = 0x%08x\n", data->devSecStatus);
pr_info(" deviceStatus: %08x\n", data->deviceStatus);
pr_info(" slotStatus: %08x\n", data->slotStatus);
pr_info(" linkStatus: %08x\n", data->linkStatus);
pr_info(" devCmdStatus: %08x\n", data->devCmdStatus);
pr_info(" devSecStatus: %08x\n", data->devSecStatus);
pr_info(" rootErrorStatus = 0x%08x\n", data->rootErrorStatus);
pr_info(" uncorrErrorStatus = 0x%08x\n", data->uncorrErrorStatus);
pr_info(" corrErrorStatus = 0x%08x\n", data->corrErrorStatus);
pr_info(" tlpHdr1 = 0x%08x\n", data->tlpHdr1);
pr_info(" tlpHdr2 = 0x%08x\n", data->tlpHdr2);
pr_info(" tlpHdr3 = 0x%08x\n", data->tlpHdr3);
pr_info(" tlpHdr4 = 0x%08x\n", data->tlpHdr4);
pr_info(" sourceId = 0x%08x\n", data->sourceId);
pr_info(" errorClass = 0x%016llx\n", data->errorClass);
pr_info(" correlator = 0x%016llx\n", data->correlator);
pr_info(" p7iocPlssr = 0x%016llx\n", data->p7iocPlssr);
pr_info(" p7iocCsr = 0x%016llx\n", data->p7iocCsr);
pr_info(" lemFir = 0x%016llx\n", data->lemFir);
pr_info(" lemErrorMask = 0x%016llx\n", data->lemErrorMask);
pr_info(" lemWOF = 0x%016llx\n", data->lemWOF);
pr_info(" phbErrorStatus = 0x%016llx\n", data->phbErrorStatus);
pr_info(" phbFirstErrorStatus = 0x%016llx\n", data->phbFirstErrorStatus);
pr_info(" phbErrorLog0 = 0x%016llx\n", data->phbErrorLog0);
pr_info(" phbErrorLog1 = 0x%016llx\n", data->phbErrorLog1);
pr_info(" mmioErrorStatus = 0x%016llx\n", data->mmioErrorStatus);
pr_info(" mmioFirstErrorStatus = 0x%016llx\n", data->mmioFirstErrorStatus);
pr_info(" mmioErrorLog0 = 0x%016llx\n", data->mmioErrorLog0);
pr_info(" mmioErrorLog1 = 0x%016llx\n", data->mmioErrorLog1);
pr_info(" dma0ErrorStatus = 0x%016llx\n", data->dma0ErrorStatus);
pr_info(" dma0FirstErrorStatus = 0x%016llx\n", data->dma0FirstErrorStatus);
pr_info(" dma0ErrorLog0 = 0x%016llx\n", data->dma0ErrorLog0);
pr_info(" dma0ErrorLog1 = 0x%016llx\n", data->dma0ErrorLog1);
pr_info(" dma1ErrorStatus = 0x%016llx\n", data->dma1ErrorStatus);
pr_info(" dma1FirstErrorStatus = 0x%016llx\n", data->dma1FirstErrorStatus);
pr_info(" dma1ErrorLog0 = 0x%016llx\n", data->dma1ErrorLog0);
pr_info(" dma1ErrorLog1 = 0x%016llx\n", data->dma1ErrorLog1);
pr_info(" rootErrorStatus: %08x\n", data->rootErrorStatus);
pr_info(" uncorrErrorStatus: %08x\n", data->uncorrErrorStatus);
pr_info(" corrErrorStatus: %08x\n", data->corrErrorStatus);
pr_info(" tlpHdr1: %08x\n", data->tlpHdr1);
pr_info(" tlpHdr2: %08x\n", data->tlpHdr2);
pr_info(" tlpHdr3: %08x\n", data->tlpHdr3);
pr_info(" tlpHdr4: %08x\n", data->tlpHdr4);
pr_info(" sourceId: %08x\n", data->sourceId);
pr_info(" errorClass: %016llx\n", data->errorClass);
pr_info(" correlator: %016llx\n", data->correlator);
pr_info(" p7iocPlssr: %016llx\n", data->p7iocPlssr);
pr_info(" p7iocCsr: %016llx\n", data->p7iocCsr);
pr_info(" lemFir: %016llx\n", data->lemFir);
pr_info(" lemErrorMask: %016llx\n", data->lemErrorMask);
pr_info(" lemWOF: %016llx\n", data->lemWOF);
pr_info(" phbErrorStatus: %016llx\n", data->phbErrorStatus);
pr_info(" phbFirstErrorStatus: %016llx\n", data->phbFirstErrorStatus);
pr_info(" phbErrorLog0: %016llx\n", data->phbErrorLog0);
pr_info(" phbErrorLog1: %016llx\n", data->phbErrorLog1);
pr_info(" mmioErrorStatus: %016llx\n", data->mmioErrorStatus);
pr_info(" mmioFirstErrorStatus: %016llx\n", data->mmioFirstErrorStatus);
pr_info(" mmioErrorLog0: %016llx\n", data->mmioErrorLog0);
pr_info(" mmioErrorLog1: %016llx\n", data->mmioErrorLog1);
pr_info(" dma0ErrorStatus: %016llx\n", data->dma0ErrorStatus);
pr_info(" dma0FirstErrorStatus: %016llx\n", data->dma0FirstErrorStatus);
pr_info(" dma0ErrorLog0: %016llx\n", data->dma0ErrorLog0);
pr_info(" dma0ErrorLog1: %016llx\n", data->dma0ErrorLog1);
pr_info(" dma1ErrorStatus: %016llx\n", data->dma1ErrorStatus);
pr_info(" dma1FirstErrorStatus: %016llx\n", data->dma1FirstErrorStatus);
pr_info(" dma1ErrorLog0: %016llx\n", data->dma1ErrorLog0);
pr_info(" dma1ErrorLog1: %016llx\n", data->dma1ErrorLog1);
for (i = 0; i < OPAL_P7IOC_NUM_PEST_REGS; i++) {
if ((data->pestA[i] >> 63) == 0 &&
(data->pestB[i] >> 63) == 0)
continue;
pr_info(" PE[%3d] PESTA = 0x%016llx\n", i, data->pestA[i]);
pr_info(" PESTB = 0x%016llx\n", data->pestB[i]);
pr_info(" PE[%3d] PESTA: %016llx\n", i, data->pestA[i]);
pr_info(" PESTB: %016llx\n", data->pestB[i]);
}
}
static void pnv_pci_dump_phb_diag_data(struct pnv_phb *phb)
static void pnv_pci_dump_phb3_diag_data(struct pci_controller *hose,
struct OpalIoPhbErrorCommon *common)
{
switch(phb->model) {
case PNV_PHB_MODEL_P7IOC:
pnv_pci_dump_p7ioc_diag_data(phb);
struct OpalIoPhb3ErrorData *data;
int i;
data = (struct OpalIoPhb3ErrorData*)common;
pr_info("PHB3 PHB#%d Diag-data (Version: %d)\n\n",
hose->global_number, common->version);
pr_info(" brdgCtl: %08x\n", data->brdgCtl);
pr_info(" portStatusReg: %08x\n", data->portStatusReg);
pr_info(" rootCmplxStatus: %08x\n", data->rootCmplxStatus);
pr_info(" busAgentStatus: %08x\n", data->busAgentStatus);
pr_info(" deviceStatus: %08x\n", data->deviceStatus);
pr_info(" slotStatus: %08x\n", data->slotStatus);
pr_info(" linkStatus: %08x\n", data->linkStatus);
pr_info(" devCmdStatus: %08x\n", data->devCmdStatus);
pr_info(" devSecStatus: %08x\n", data->devSecStatus);
pr_info(" rootErrorStatus: %08x\n", data->rootErrorStatus);
pr_info(" uncorrErrorStatus: %08x\n", data->uncorrErrorStatus);
pr_info(" corrErrorStatus: %08x\n", data->corrErrorStatus);
pr_info(" tlpHdr1: %08x\n", data->tlpHdr1);
pr_info(" tlpHdr2: %08x\n", data->tlpHdr2);
pr_info(" tlpHdr3: %08x\n", data->tlpHdr3);
pr_info(" tlpHdr4: %08x\n", data->tlpHdr4);
pr_info(" sourceId: %08x\n", data->sourceId);
pr_info(" errorClass: %016llx\n", data->errorClass);
pr_info(" correlator: %016llx\n", data->correlator);
pr_info(" nFir: %016llx\n", data->nFir);
pr_info(" nFirMask: %016llx\n", data->nFirMask);
pr_info(" nFirWOF: %016llx\n", data->nFirWOF);
pr_info(" PhbPlssr: %016llx\n", data->phbPlssr);
pr_info(" PhbCsr: %016llx\n", data->phbCsr);
pr_info(" lemFir: %016llx\n", data->lemFir);
pr_info(" lemErrorMask: %016llx\n", data->lemErrorMask);
pr_info(" lemWOF: %016llx\n", data->lemWOF);
pr_info(" phbErrorStatus: %016llx\n", data->phbErrorStatus);
pr_info(" phbFirstErrorStatus: %016llx\n", data->phbFirstErrorStatus);
pr_info(" phbErrorLog0: %016llx\n", data->phbErrorLog0);
pr_info(" phbErrorLog1: %016llx\n", data->phbErrorLog1);
pr_info(" mmioErrorStatus: %016llx\n", data->mmioErrorStatus);
pr_info(" mmioFirstErrorStatus: %016llx\n", data->mmioFirstErrorStatus);
pr_info(" mmioErrorLog0: %016llx\n", data->mmioErrorLog0);
pr_info(" mmioErrorLog1: %016llx\n", data->mmioErrorLog1);
pr_info(" dma0ErrorStatus: %016llx\n", data->dma0ErrorStatus);
pr_info(" dma0FirstErrorStatus: %016llx\n", data->dma0FirstErrorStatus);
pr_info(" dma0ErrorLog0: %016llx\n", data->dma0ErrorLog0);
pr_info(" dma0ErrorLog1: %016llx\n", data->dma0ErrorLog1);
pr_info(" dma1ErrorStatus: %016llx\n", data->dma1ErrorStatus);
pr_info(" dma1FirstErrorStatus: %016llx\n", data->dma1FirstErrorStatus);
pr_info(" dma1ErrorLog0: %016llx\n", data->dma1ErrorLog0);
pr_info(" dma1ErrorLog1: %016llx\n", data->dma1ErrorLog1);
for (i = 0; i < OPAL_PHB3_NUM_PEST_REGS; i++) {
if ((data->pestA[i] >> 63) == 0 &&
(data->pestB[i] >> 63) == 0)
continue;
pr_info(" PE[%3d] PESTA: %016llx\n", i, data->pestA[i]);
pr_info(" PESTB: %016llx\n", data->pestB[i]);
}
}
void pnv_pci_dump_phb_diag_data(struct pci_controller *hose,
unsigned char *log_buff)
{
struct OpalIoPhbErrorCommon *common;
if (!hose || !log_buff)
return;
common = (struct OpalIoPhbErrorCommon *)log_buff;
switch (common->ioType) {
case OPAL_PHB_ERROR_DATA_TYPE_P7IOC:
pnv_pci_dump_p7ioc_diag_data(hose, common);
break;
case OPAL_PHB_ERROR_DATA_TYPE_PHB3:
pnv_pci_dump_phb3_diag_data(hose, common);
break;
default:
pr_warning("PCI %d: Can't decode this PHB diag data\n",
phb->hose->global_number);
pr_warn("%s: Unrecognized ioType %d\n",
__func__, common->ioType);
}
}
@ -222,7 +302,7 @@ static void pnv_pci_handle_eeh_config(struct pnv_phb *phb, u32 pe_no)
* with the normal errors generated when probing empty slots
*/
if (has_diag)
pnv_pci_dump_phb_diag_data(phb);
pnv_pci_dump_phb_diag_data(phb->hose, phb->diag.blob);
else
pr_warning("PCI %d: No diag data available\n",
phb->hose->global_number);

3
arch/powerpc/platforms/powernv/pci.h
View File

@ -176,6 +176,7 @@ struct pnv_phb {
union {
unsigned char blob[PNV_PCI_DIAG_BUF_SIZE];
struct OpalIoP7IOCPhbErrorData p7ioc;
struct OpalIoPhb3ErrorData phb3;
} diag;
};
@ -184,6 +185,8 @@ extern struct pci_ops pnv_pci_ops;
extern struct pnv_eeh_ops ioda_eeh_ops;
#endif
void pnv_pci_dump_phb_diag_data(struct pci_controller *hose,
unsigned char *log_buff);
int pnv_pci_cfg_read(struct device_node *dn,
int where, int size, u32 *val);
int pnv_pci_cfg_write(struct device_node *dn,