diff options
| -rw-r--r-- | arch/powerpc/include/asm/opal.h | 8 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/pnv-pci.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powernv/pci-ioda.c | 6 | ||||
| -rw-r--r-- | drivers/misc/cxl/pci.c | 8 |
4 files changed, 19 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h index eb95b675109b..2baf8a5925ca 100644 --- a/arch/powerpc/include/asm/opal.h +++ b/arch/powerpc/include/asm/opal.h @@ -595,6 +595,14 @@ enum { OPAL_PHB3_NUM_PEST_REGS = 256 }; +/* CAPI modes for PHB */ +enum { + OPAL_PHB_CAPI_MODE_PCIE = 0, + OPAL_PHB_CAPI_MODE_CAPI = 1, + OPAL_PHB_CAPI_MODE_SNOOP_OFF = 2, + OPAL_PHB_CAPI_MODE_SNOOP_ON = 3, +}; + struct OpalIoPhbErrorCommon { __be32 version; __be32 ioType; diff --git a/arch/powerpc/include/asm/pnv-pci.h b/arch/powerpc/include/asm/pnv-pci.h index f09a22fa1bd7..3c00d648336d 100644 --- a/arch/powerpc/include/asm/pnv-pci.h +++ b/arch/powerpc/include/asm/pnv-pci.h @@ -13,7 +13,7 @@ #include <linux/pci.h> #include <misc/cxl.h> -int pnv_phb_to_cxl(struct pci_dev *dev); +int pnv_phb_to_cxl_mode(struct pci_dev *dev, uint64_t mode); int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq, unsigned int virq); int pnv_cxl_alloc_hwirqs(struct pci_dev *dev, int num); diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index fac88ed8a915..5d52d6f274f8 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -1468,7 +1468,7 @@ struct device_node *pnv_pci_to_phb_node(struct pci_dev *dev) } EXPORT_SYMBOL(pnv_pci_to_phb_node); -int pnv_phb_to_cxl(struct pci_dev *dev) +int pnv_phb_to_cxl_mode(struct pci_dev *dev, uint64_t mode) { struct pci_controller *hose = pci_bus_to_host(dev->bus); struct pnv_phb *phb = hose->private_data; @@ -1481,13 +1481,13 @@ int pnv_phb_to_cxl(struct pci_dev *dev) pe_info(pe, "Switching PHB to CXL\n"); - rc = opal_pci_set_phb_cxl_mode(phb->opal_id, 1, pe->pe_number); + rc = opal_pci_set_phb_cxl_mode(phb->opal_id, mode, pe->pe_number); if (rc) dev_err(&dev->dev, "opal_pci_set_phb_cxl_mode failed: %i\n", rc); return rc; } -EXPORT_SYMBOL(pnv_phb_to_cxl); +EXPORT_SYMBOL(pnv_phb_to_cxl_mode); /* Find PHB for cxl dev and allocate MSI hwirqs? * Returns the absolute hardware IRQ number diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c index 014f4c928e4c..a4a4e0217eed 100644 --- a/drivers/misc/cxl/pci.c +++ b/drivers/misc/cxl/pci.c @@ -926,9 +926,15 @@ static struct cxl *cxl_init_adapter(struct pci_dev *dev) if ((rc = init_implementation_adapter_regs(adapter, dev))) goto err3; - if ((rc = pnv_phb_to_cxl(dev))) + if ((rc = pnv_phb_to_cxl_mode(dev, OPAL_PHB_CAPI_MODE_CAPI))) goto err3; + /* If recovery happened, the last step is to turn on snooping. + * In the non-recovery case this has no effect */ + if ((rc = pnv_phb_to_cxl_mode(dev, OPAL_PHB_CAPI_MODE_SNOOP_ON))) { + goto err3; + } + if ((rc = cxl_register_psl_err_irq(adapter))) goto err3; |