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Diffstat (limited to 'arch/powerpc/platforms/powernv/pci.c')
-rw-r--r--arch/powerpc/platforms/powernv/pci.c202
1 files changed, 110 insertions, 92 deletions
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index 8518817dcdfd..eefbfcc3fd8c 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -131,65 +131,60 @@ static void pnv_pci_dump_p7ioc_diag_data(struct pci_controller *hose,
int i;
data = (struct OpalIoP7IOCPhbErrorData *)common;
- pr_info("P7IOC PHB#%d Diag-data (Version: %d)\n\n",
+ pr_info("P7IOC PHB#%d Diag-data (Version: %d)\n",
hose->global_number, common->version);
if (data->brdgCtl)
- pr_info(" brdgCtl: %08x\n",
+ pr_info("brdgCtl: %08x\n",
data->brdgCtl);
if (data->portStatusReg || data->rootCmplxStatus ||
data->busAgentStatus)
- pr_info(" UtlSts: %08x %08x %08x\n",
+ pr_info("UtlSts: %08x %08x %08x\n",
data->portStatusReg, data->rootCmplxStatus,
data->busAgentStatus);
if (data->deviceStatus || data->slotStatus ||
data->linkStatus || data->devCmdStatus ||
data->devSecStatus)
- pr_info(" RootSts: %08x %08x %08x %08x %08x\n",
+ pr_info("RootSts: %08x %08x %08x %08x %08x\n",
data->deviceStatus, data->slotStatus,
data->linkStatus, data->devCmdStatus,
data->devSecStatus);
if (data->rootErrorStatus || data->uncorrErrorStatus ||
data->corrErrorStatus)
- pr_info(" RootErrSts: %08x %08x %08x\n",
+ pr_info("RootErrSts: %08x %08x %08x\n",
data->rootErrorStatus, data->uncorrErrorStatus,
data->corrErrorStatus);
if (data->tlpHdr1 || data->tlpHdr2 ||
data->tlpHdr3 || data->tlpHdr4)
- pr_info(" RootErrLog: %08x %08x %08x %08x\n",
+ pr_info("RootErrLog: %08x %08x %08x %08x\n",
data->tlpHdr1, data->tlpHdr2,
data->tlpHdr3, data->tlpHdr4);
if (data->sourceId || data->errorClass ||
data->correlator)
- pr_info(" RootErrLog1: %08x %016llx %016llx\n",
+ pr_info("RootErrLog1: %08x %016llx %016llx\n",
data->sourceId, data->errorClass,
data->correlator);
if (data->p7iocPlssr || data->p7iocCsr)
- pr_info(" PhbSts: %016llx %016llx\n",
+ pr_info("PhbSts: %016llx %016llx\n",
data->p7iocPlssr, data->p7iocCsr);
- if (data->lemFir || data->lemErrorMask ||
- data->lemWOF)
- pr_info(" Lem: %016llx %016llx %016llx\n",
+ if (data->lemFir)
+ pr_info("Lem: %016llx %016llx %016llx\n",
data->lemFir, data->lemErrorMask,
data->lemWOF);
- if (data->phbErrorStatus || data->phbFirstErrorStatus ||
- data->phbErrorLog0 || data->phbErrorLog1)
- pr_info(" PhbErr: %016llx %016llx %016llx %016llx\n",
+ if (data->phbErrorStatus)
+ pr_info("PhbErr: %016llx %016llx %016llx %016llx\n",
data->phbErrorStatus, data->phbFirstErrorStatus,
data->phbErrorLog0, data->phbErrorLog1);
- if (data->mmioErrorStatus || data->mmioFirstErrorStatus ||
- data->mmioErrorLog0 || data->mmioErrorLog1)
- pr_info(" OutErr: %016llx %016llx %016llx %016llx\n",
+ if (data->mmioErrorStatus)
+ pr_info("OutErr: %016llx %016llx %016llx %016llx\n",
data->mmioErrorStatus, data->mmioFirstErrorStatus,
data->mmioErrorLog0, data->mmioErrorLog1);
- if (data->dma0ErrorStatus || data->dma0FirstErrorStatus ||
- data->dma0ErrorLog0 || data->dma0ErrorLog1)
- pr_info(" InAErr: %016llx %016llx %016llx %016llx\n",
+ if (data->dma0ErrorStatus)
+ pr_info("InAErr: %016llx %016llx %016llx %016llx\n",
data->dma0ErrorStatus, data->dma0FirstErrorStatus,
data->dma0ErrorLog0, data->dma0ErrorLog1);
- if (data->dma1ErrorStatus || data->dma1FirstErrorStatus ||
- data->dma1ErrorLog0 || data->dma1ErrorLog1)
- pr_info(" InBErr: %016llx %016llx %016llx %016llx\n",
+ if (data->dma1ErrorStatus)
+ pr_info("InBErr: %016llx %016llx %016llx %016llx\n",
data->dma1ErrorStatus, data->dma1FirstErrorStatus,
data->dma1ErrorLog0, data->dma1ErrorLog1);
@@ -198,7 +193,7 @@ static void pnv_pci_dump_p7ioc_diag_data(struct pci_controller *hose,
(data->pestB[i] >> 63) == 0)
continue;
- pr_info(" PE[%3d] A/B: %016llx %016llx\n",
+ pr_info("PE[%3d] A/B: %016llx %016llx\n",
i, data->pestA[i], data->pestB[i]);
}
}
@@ -210,69 +205,63 @@ static void pnv_pci_dump_phb3_diag_data(struct pci_controller *hose,
int i;
data = (struct OpalIoPhb3ErrorData*)common;
- pr_info("PHB3 PHB#%d Diag-data (Version: %d)\n\n",
+ pr_info("PHB3 PHB#%d Diag-data (Version: %d)\n",
hose->global_number, common->version);
if (data->brdgCtl)
- pr_info(" brdgCtl: %08x\n",
+ pr_info("brdgCtl: %08x\n",
data->brdgCtl);
if (data->portStatusReg || data->rootCmplxStatus ||
data->busAgentStatus)
- pr_info(" UtlSts: %08x %08x %08x\n",
+ pr_info("UtlSts: %08x %08x %08x\n",
data->portStatusReg, data->rootCmplxStatus,
data->busAgentStatus);
if (data->deviceStatus || data->slotStatus ||
data->linkStatus || data->devCmdStatus ||
data->devSecStatus)
- pr_info(" RootSts: %08x %08x %08x %08x %08x\n",
+ pr_info("RootSts: %08x %08x %08x %08x %08x\n",
data->deviceStatus, data->slotStatus,
data->linkStatus, data->devCmdStatus,
data->devSecStatus);
if (data->rootErrorStatus || data->uncorrErrorStatus ||
data->corrErrorStatus)
- pr_info(" RootErrSts: %08x %08x %08x\n",
+ pr_info("RootErrSts: %08x %08x %08x\n",
data->rootErrorStatus, data->uncorrErrorStatus,
data->corrErrorStatus);
if (data->tlpHdr1 || data->tlpHdr2 ||
data->tlpHdr3 || data->tlpHdr4)
- pr_info(" RootErrLog: %08x %08x %08x %08x\n",
+ pr_info("RootErrLog: %08x %08x %08x %08x\n",
data->tlpHdr1, data->tlpHdr2,
data->tlpHdr3, data->tlpHdr4);
if (data->sourceId || data->errorClass ||
data->correlator)
- pr_info(" RootErrLog1: %08x %016llx %016llx\n",
+ pr_info("RootErrLog1: %08x %016llx %016llx\n",
data->sourceId, data->errorClass,
data->correlator);
- if (data->nFir || data->nFirMask ||
- data->nFirWOF)
- pr_info(" nFir: %016llx %016llx %016llx\n",
+ if (data->nFir)
+ pr_info("nFir: %016llx %016llx %016llx\n",
data->nFir, data->nFirMask,
data->nFirWOF);
if (data->phbPlssr || data->phbCsr)
- pr_info(" PhbSts: %016llx %016llx\n",
+ pr_info("PhbSts: %016llx %016llx\n",
data->phbPlssr, data->phbCsr);
- if (data->lemFir || data->lemErrorMask ||
- data->lemWOF)
- pr_info(" Lem: %016llx %016llx %016llx\n",
+ if (data->lemFir)
+ pr_info("Lem: %016llx %016llx %016llx\n",
data->lemFir, data->lemErrorMask,
data->lemWOF);
- if (data->phbErrorStatus || data->phbFirstErrorStatus ||
- data->phbErrorLog0 || data->phbErrorLog1)
- pr_info(" PhbErr: %016llx %016llx %016llx %016llx\n",
+ if (data->phbErrorStatus)
+ pr_info("PhbErr: %016llx %016llx %016llx %016llx\n",
data->phbErrorStatus, data->phbFirstErrorStatus,
data->phbErrorLog0, data->phbErrorLog1);
- if (data->mmioErrorStatus || data->mmioFirstErrorStatus ||
- data->mmioErrorLog0 || data->mmioErrorLog1)
- pr_info(" OutErr: %016llx %016llx %016llx %016llx\n",
+ if (data->mmioErrorStatus)
+ pr_info("OutErr: %016llx %016llx %016llx %016llx\n",
data->mmioErrorStatus, data->mmioFirstErrorStatus,
data->mmioErrorLog0, data->mmioErrorLog1);
- if (data->dma0ErrorStatus || data->dma0FirstErrorStatus ||
- data->dma0ErrorLog0 || data->dma0ErrorLog1)
- pr_info(" InAErr: %016llx %016llx %016llx %016llx\n",
+ if (data->dma0ErrorStatus)
+ pr_info("InAErr: %016llx %016llx %016llx %016llx\n",
data->dma0ErrorStatus, data->dma0FirstErrorStatus,
data->dma0ErrorLog0, data->dma0ErrorLog1);
- if (data->dma1ErrorStatus || data->dma1FirstErrorStatus ||
- data->dma1ErrorLog0 || data->dma1ErrorLog1)
- pr_info(" InBErr: %016llx %016llx %016llx %016llx\n",
+ if (data->dma1ErrorStatus)
+ pr_info("InBErr: %016llx %016llx %016llx %016llx\n",
data->dma1ErrorStatus, data->dma1FirstErrorStatus,
data->dma1ErrorLog0, data->dma1ErrorLog1);
@@ -281,7 +270,7 @@ static void pnv_pci_dump_phb3_diag_data(struct pci_controller *hose,
(data->pestB[i] >> 63) == 0)
continue;
- pr_info(" PE[%3d] A/B: %016llx %016llx\n",
+ pr_info("PE[%3d] A/B: %016llx %016llx\n",
i, data->pestA[i], data->pestB[i]);
}
}
@@ -384,9 +373,6 @@ int pnv_pci_cfg_read(struct device_node *dn,
struct pci_dn *pdn = PCI_DN(dn);
struct pnv_phb *phb = pdn->phb->private_data;
u32 bdfn = (pdn->busno << 8) | pdn->devfn;
-#ifdef CONFIG_EEH
- struct eeh_pe *phb_pe = NULL;
-#endif
s64 rc;
switch (size) {
@@ -412,31 +398,9 @@ int pnv_pci_cfg_read(struct device_node *dn,
default:
return PCIBIOS_FUNC_NOT_SUPPORTED;
}
+
cfg_dbg("%s: bus: %x devfn: %x +%x/%x -> %08x\n",
__func__, pdn->busno, pdn->devfn, where, size, *val);
-
- /*
- * Check if the specified PE has been put into frozen
- * state. On the other hand, we needn't do that while
- * the PHB has been put into frozen state because of
- * PHB-fatal errors.
- */
-#ifdef CONFIG_EEH
- phb_pe = eeh_phb_pe_get(pdn->phb);
- if (phb_pe && (phb_pe->state & EEH_PE_ISOLATED))
- return PCIBIOS_SUCCESSFUL;
-
- if (phb->eeh_state & PNV_EEH_STATE_ENABLED) {
- if (*val == EEH_IO_ERROR_VALUE(size) &&
- eeh_dev_check_failure(of_node_to_eeh_dev(dn)))
- return PCIBIOS_DEVICE_NOT_FOUND;
- } else {
- pnv_pci_config_check_eeh(phb, dn);
- }
-#else
- pnv_pci_config_check_eeh(phb, dn);
-#endif
-
return PCIBIOS_SUCCESSFUL;
}
@@ -463,33 +427,74 @@ int pnv_pci_cfg_write(struct device_node *dn,
return PCIBIOS_FUNC_NOT_SUPPORTED;
}
- /* Check if the PHB got frozen due to an error (no response) */
-#ifdef CONFIG_EEH
- if (!(phb->eeh_state & PNV_EEH_STATE_ENABLED))
- pnv_pci_config_check_eeh(phb, dn);
-#else
- pnv_pci_config_check_eeh(phb, dn);
-#endif
-
return PCIBIOS_SUCCESSFUL;
}
+#if CONFIG_EEH
+static bool pnv_pci_cfg_check(struct pci_controller *hose,
+ struct device_node *dn)
+{
+ struct eeh_dev *edev = NULL;
+ struct pnv_phb *phb = hose->private_data;
+
+ /* EEH not enabled ? */
+ if (!(phb->flags & PNV_PHB_FLAG_EEH))
+ return true;
+
+ /* PE reset or device removed ? */
+ edev = of_node_to_eeh_dev(dn);
+ if (edev) {
+ if (edev->pe &&
+ (edev->pe->state & EEH_PE_RESET))
+ return false;
+
+ if (edev->mode & EEH_DEV_REMOVED)
+ return false;
+ }
+
+ return true;
+}
+#else
+static inline pnv_pci_cfg_check(struct pci_controller *hose,
+ struct device_node *dn)
+{
+ return true;
+}
+#endif /* CONFIG_EEH */
+
static int pnv_pci_read_config(struct pci_bus *bus,
unsigned int devfn,
int where, int size, u32 *val)
{
struct device_node *dn, *busdn = pci_bus_to_OF_node(bus);
struct pci_dn *pdn;
+ struct pnv_phb *phb;
+ bool found = false;
+ int ret;
+ *val = 0xFFFFFFFF;
for (dn = busdn->child; dn; dn = dn->sibling) {
pdn = PCI_DN(dn);
- if (pdn && pdn->devfn == devfn)
- return pnv_pci_cfg_read(dn, where, size, val);
+ if (pdn && pdn->devfn == devfn) {
+ phb = pdn->phb->private_data;
+ found = true;
+ break;
+ }
}
- *val = 0xFFFFFFFF;
- return PCIBIOS_DEVICE_NOT_FOUND;
+ if (!found || !pnv_pci_cfg_check(pdn->phb, dn))
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ ret = pnv_pci_cfg_read(dn, where, size, val);
+ if (phb->flags & PNV_PHB_FLAG_EEH) {
+ if (*val == EEH_IO_ERROR_VALUE(size) &&
+ eeh_dev_check_failure(of_node_to_eeh_dev(dn)))
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ } else {
+ pnv_pci_config_check_eeh(phb, dn);
+ }
+
+ return ret;
}
static int pnv_pci_write_config(struct pci_bus *bus,
@@ -498,14 +503,27 @@ static int pnv_pci_write_config(struct pci_bus *bus,
{
struct device_node *dn, *busdn = pci_bus_to_OF_node(bus);
struct pci_dn *pdn;
+ struct pnv_phb *phb;
+ bool found = false;
+ int ret;
for (dn = busdn->child; dn; dn = dn->sibling) {
pdn = PCI_DN(dn);
- if (pdn && pdn->devfn == devfn)
- return pnv_pci_cfg_write(dn, where, size, val);
+ if (pdn && pdn->devfn == devfn) {
+ phb = pdn->phb->private_data;
+ found = true;
+ break;
+ }
}
- return PCIBIOS_DEVICE_NOT_FOUND;
+ if (!found || !pnv_pci_cfg_check(pdn->phb, dn))
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ ret = pnv_pci_cfg_write(dn, where, size, val);
+ if (!(phb->flags & PNV_PHB_FLAG_EEH))
+ pnv_pci_config_check_eeh(phb, dn);
+
+ return ret;
}
struct pci_ops pnv_pci_ops = {
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-12 21:41:17 +0000