RDMA/efa: Report host information to the device

[linux-2.6-microblaze.git] / drivers / infiniband / hw / efa / efa_main.c

diff --git a/drivers/infiniband/hw/efa/efa_main.c b/drivers/infiniband/hw/efa/efa_main.c
index faf3ff1..8214557 100644 (file)
--- a/drivers/infiniband/hw/efa/efa_main.c
+++ b/drivers/infiniband/hw/efa/efa_main.c
@@ -1,10 +1,12 @@
 // SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
 /*
- * Copyright 2018-2019 Amazon.com, Inc. or its affiliates. All rights reserved.
+ * Copyright 2018-2020 Amazon.com, Inc. or its affiliates. All rights reserved.
  */
 
 #include <linux/module.h>
 #include <linux/pci.h>
+#include <linux/utsname.h>
+#include <linux/version.h>
 
 #include <rdma/ib_user_verbs.h>
 
@@ -187,6 +189,52 @@ static void efa_stats_init(struct efa_dev *dev)
                atomic64_set(s, 0);
 }
 
+static void efa_set_host_info(struct efa_dev *dev)
+{
+       struct efa_admin_set_feature_resp resp = {};
+       struct efa_admin_set_feature_cmd cmd = {};
+       struct efa_admin_host_info *hinf;
+       u32 bufsz = sizeof(*hinf);
+       dma_addr_t hinf_dma;
+
+       if (!efa_com_check_supported_feature_id(&dev->edev,
+                                               EFA_ADMIN_HOST_INFO))
+               return;
+
+       /* Failures in host info set shall not disturb probe */
+       hinf = dma_alloc_coherent(&dev->pdev->dev, bufsz, &hinf_dma,
+                                 GFP_KERNEL);
+       if (!hinf)
+               return;
+
+       strlcpy(hinf->os_dist_str, utsname()->release,
+               min(sizeof(hinf->os_dist_str), sizeof(utsname()->release)));
+       hinf->os_type = EFA_ADMIN_OS_LINUX;
+       strlcpy(hinf->kernel_ver_str, utsname()->version,
+               min(sizeof(hinf->kernel_ver_str), sizeof(utsname()->version)));
+       hinf->kernel_ver = LINUX_VERSION_CODE;
+       EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MAJOR, 0);
+       EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MINOR, 0);
+       EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_SUB_MINOR, 0);
+       EFA_SET(&hinf->driver_ver, EFA_ADMIN_HOST_INFO_DRIVER_MODULE_TYPE, 0);
+       EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_BUS, dev->pdev->bus->number);
+       EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_DEVICE,
+               PCI_SLOT(dev->pdev->devfn));
+       EFA_SET(&hinf->bdf, EFA_ADMIN_HOST_INFO_FUNCTION,
+               PCI_FUNC(dev->pdev->devfn));
+       EFA_SET(&hinf->spec_ver, EFA_ADMIN_HOST_INFO_SPEC_MAJOR,
+               EFA_COMMON_SPEC_VERSION_MAJOR);
+       EFA_SET(&hinf->spec_ver, EFA_ADMIN_HOST_INFO_SPEC_MINOR,
+               EFA_COMMON_SPEC_VERSION_MINOR);
+       EFA_SET(&hinf->flags, EFA_ADMIN_HOST_INFO_INTREE, 1);
+       EFA_SET(&hinf->flags, EFA_ADMIN_HOST_INFO_GDR, 0);
+
+       efa_com_set_feature_ex(&dev->edev, &resp, &cmd, EFA_ADMIN_HOST_INFO,
+                              hinf_dma, bufsz);
+
+       dma_free_coherent(&dev->pdev->dev, bufsz, hinf, hinf_dma);
+}
+
 static const struct ib_device_ops efa_dev_ops = {
        .owner = THIS_MODULE,
        .driver_id = RDMA_DRIVER_EFA,
@@ -251,6 +299,8 @@ static int efa_ib_device_add(struct efa_dev *dev)
        if (err)
                goto err_release_doorbell_bar;
 
+       efa_set_host_info(dev);
+
        dev->ibdev.node_type = RDMA_NODE_UNSPECIFIED;
        dev->ibdev.phys_port_cnt = 1;
        dev->ibdev.num_comp_vectors = 1;