diff options
| -rw-r--r-- | drivers/cxl/cxlmem.h | 2 | ||||
| -rw-r--r-- | drivers/cxl/pci.c | 6 |
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/cxl/cxlmem.h b/drivers/cxl/cxlmem.h index 90d67fff5bed..5cf5329e13a9 100644 --- a/drivers/cxl/cxlmem.h +++ b/drivers/cxl/cxlmem.h @@ -98,6 +98,7 @@ struct cxl_mbox_cmd { * * @dev: The device associated with this CXL state * @regs: Parsed register blocks + * @cxl_dvsec: Offset to the PCIe device DVSEC * @payload_size: Size of space for payload * (CXL 2.0 8.2.8.4.3 Mailbox Capabilities Register) * @lsa_size: Size of Label Storage Area @@ -126,6 +127,7 @@ struct cxl_dev_state { struct device *dev; struct cxl_regs regs; + int cxl_dvsec; size_t payload_size; size_t lsa_size; diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c index bf14c365ea33..c94002166084 100644 --- a/drivers/cxl/pci.c +++ b/drivers/cxl/pci.c @@ -408,6 +408,12 @@ static int cxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) if (IS_ERR(cxlds)) return PTR_ERR(cxlds); + cxlds->cxl_dvsec = pci_find_dvsec_capability( + pdev, PCI_DVSEC_VENDOR_ID_CXL, CXL_DVSEC_PCIE_DEVICE); + if (!cxlds->cxl_dvsec) + dev_warn(&pdev->dev, + "Device DVSEC not present, skip CXL.mem init\n"); + rc = cxl_setup_regs(pdev, CXL_REGLOC_RBI_MEMDEV, &map); if (rc) return rc; |