ntb: intel: add GNR support for Intel PCIe gen5 NTB

Add Intel Granite Rapids NTB PCI device ID and related enabling.
Expectation is same hardware interface as Saphire Rapids Xeon platforms.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Allen Hubbe <allenbh@gmail.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>

diff --git a/drivers/ntb/hw/intel/ntb_hw_gen1.c b/drivers/ntb/hw/intel/ntb_hw_gen1.c
index e5f14e2..8477201 100644 (file)
--- a/drivers/ntb/hw/intel/ntb_hw_gen1.c
+++ b/drivers/ntb/hw/intel/ntb_hw_gen1.c
@@ -763,7 +763,7 @@ static ssize_t ndev_debugfs_read(struct file *filp, char __user *ubuf,
                return ndev_ntb_debugfs_read(filp, ubuf, count, offp);
        else if (pdev_is_gen3(ndev->ntb.pdev))
                return ndev_ntb3_debugfs_read(filp, ubuf, count, offp);
-       else if (pdev_is_gen4(ndev->ntb.pdev))
+       else if (pdev_is_gen4(ndev->ntb.pdev) || pdev_is_gen5(ndev->ntb.pdev))
                return ndev_ntb4_debugfs_read(filp, ubuf, count, offp);
 
        return -ENXIO;
@@ -1874,7 +1874,7 @@ static int intel_ntb_pci_probe(struct pci_dev *pdev,
                rc = gen3_init_dev(ndev);
                if (rc)
                        goto err_init_dev;
-       } else if (pdev_is_gen4(pdev)) {
+       } else if (pdev_is_gen4(pdev) || pdev_is_gen5(pdev)) {
                ndev->ntb.ops = &intel_ntb4_ops;
                rc = intel_ntb_init_pci(ndev, pdev);
                if (rc)
@@ -1904,7 +1904,8 @@ static int intel_ntb_pci_probe(struct pci_dev *pdev,
 
 err_register:
        ndev_deinit_debugfs(ndev);
-       if (pdev_is_gen1(pdev) || pdev_is_gen3(pdev) || pdev_is_gen4(pdev))
+       if (pdev_is_gen1(pdev) || pdev_is_gen3(pdev) ||
+           pdev_is_gen4(pdev) || pdev_is_gen5(pdev))
                xeon_deinit_dev(ndev);
 err_init_dev:
        intel_ntb_deinit_pci(ndev);
@@ -1920,7 +1921,8 @@ static void intel_ntb_pci_remove(struct pci_dev *pdev)
 
        ntb_unregister_device(&ndev->ntb);
        ndev_deinit_debugfs(ndev);
-       if (pdev_is_gen1(pdev) || pdev_is_gen3(pdev) || pdev_is_gen4(pdev))
+       if (pdev_is_gen1(pdev) || pdev_is_gen3(pdev) ||
+           pdev_is_gen4(pdev) || pdev_is_gen5(pdev))
                xeon_deinit_dev(ndev);
        intel_ntb_deinit_pci(ndev);
        kfree(ndev);
@@ -2047,6 +2049,8 @@ static const struct pci_device_id intel_ntb_pci_tbl[] = {
 
        /* GEN4 */
        {PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_NTB_B2B_ICX)},
+       /* GEN5 PCIe */
+       {PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_NTB_B2B_GNR)},
        {0}
 };
 MODULE_DEVICE_TABLE(pci, intel_ntb_pci_tbl);

diff --git a/drivers/ntb/hw/intel/ntb_hw_gen4.c b/drivers/ntb/hw/intel/ntb_hw_gen4.c
index 4081fc5..22cac79 100644 (file)
--- a/drivers/ntb/hw/intel/ntb_hw_gen4.c
+++ b/drivers/ntb/hw/intel/ntb_hw_gen4.c
@@ -197,7 +197,7 @@ int gen4_init_dev(struct intel_ntb_dev *ndev)
        ppd1 = ioread32(ndev->self_mmio + GEN4_PPD1_OFFSET);
        if (pdev_is_ICX(pdev))
                ndev->ntb.topo = gen4_ppd_topo(ndev, ppd1);
-       else if (pdev_is_SPR(pdev))
+       else if (pdev_is_SPR(pdev) || pdev_is_gen5(pdev))
                ndev->ntb.topo = spr_ppd_topo(ndev, ppd1);
        dev_dbg(&pdev->dev, "ppd %#x topo %s\n", ppd1,
                ntb_topo_string(ndev->ntb.topo));

diff --git a/drivers/ntb/hw/intel/ntb_hw_intel.h b/drivers/ntb/hw/intel/ntb_hw_intel.h
index b233d1c..da4d5fe 100644 (file)
--- a/drivers/ntb/hw/intel/ntb_hw_intel.h
+++ b/drivers/ntb/hw/intel/ntb_hw_intel.h
@@ -70,6 +70,7 @@
 #define PCI_DEVICE_ID_INTEL_NTB_SS_BDX 0x6F0F
 #define PCI_DEVICE_ID_INTEL_NTB_B2B_SKX        0x201C
 #define PCI_DEVICE_ID_INTEL_NTB_B2B_ICX        0x347e
+#define PCI_DEVICE_ID_INTEL_NTB_B2B_GNR        0x0db4
 
 /* Ntb control and link status */
 #define NTB_CTL_CFG_LOCK               BIT(0)
@@ -228,4 +229,10 @@ static inline int pdev_is_gen4(struct pci_dev *pdev)
 
        return 0;
 }
+
+static inline int pdev_is_gen5(struct pci_dev *pdev)
+{
+       return pdev->device == PCI_DEVICE_ID_INTEL_NTB_B2B_GNR;
+}
+
 #endif