RDMA/ionic: Register device ops for miscellaneous functionality

Implement idbdev ops for device and port information.

Co-developed-by: Andrew Boyer <[e-mail]>
Signed-off-by: Andrew Boyer <[e-mail]>
Co-developed-by: Allen Hubbe <[e-mail]>
Signed-off-by: Allen Hubbe <[e-mail]>
Signed-off-by: Abhijit Gangurde <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Leon Romanovsky <[e-mail]>

drivers/infiniband/hw/ionic/ionic_ibdev.c

···
 
 #include <linux/module.h>
 #include <linux/printk.h>
+#include <linux/pci.h>
+#include <linux/irq.h>
 #include <net/addrconf.h>
+#include <rdma/ib_addr.h>
+#include <rdma/ib_mad.h>
 
 #include "ionic_ibdev.h"
 
···
 MODULE_DESCRIPTION(DRIVER_DESCRIPTION);
 MODULE_LICENSE("GPL");
 MODULE_IMPORT_NS("NET_IONIC");
+
+static int ionic_query_device(struct ib_device *ibdev,
+			      struct ib_device_attr *attr,
+			      struct ib_udata *udata)
+{
+	struct ionic_ibdev *dev = to_ionic_ibdev(ibdev);
+	struct net_device *ndev;
+
+	ndev = ib_device_get_netdev(ibdev, 1);
+	addrconf_ifid_eui48((u8 *)&attr->sys_image_guid, ndev);
+	dev_put(ndev);
+	attr->max_mr_size = dev->lif_cfg.npts_per_lif * PAGE_SIZE / 2;
+	attr->page_size_cap = dev->lif_cfg.page_size_supported;
+
+	attr->vendor_id = to_pci_dev(dev->lif_cfg.hwdev)->vendor;
+	attr->vendor_part_id = to_pci_dev(dev->lif_cfg.hwdev)->device;
+
+	attr->hw_ver = ionic_lif_asic_rev(dev->lif_cfg.lif);
+	attr->fw_ver = 0;
+	attr->max_qp = dev->lif_cfg.qp_count;
+	attr->max_qp_wr = IONIC_MAX_DEPTH;
+	attr->device_cap_flags =
+		IB_DEVICE_MEM_WINDOW |
+		IB_DEVICE_MEM_MGT_EXTENSIONS |
+		IB_DEVICE_MEM_WINDOW_TYPE_2B |
+		0;
+	attr->max_send_sge =
+		min(ionic_v1_send_wqe_max_sge(dev->lif_cfg.max_stride, 0, false),
+		    IONIC_SPEC_HIGH);
+	attr->max_recv_sge =
+		min(ionic_v1_recv_wqe_max_sge(dev->lif_cfg.max_stride, 0, false),
+		    IONIC_SPEC_HIGH);
+	attr->max_sge_rd = attr->max_send_sge;
+	attr->max_cq = dev->lif_cfg.cq_count / dev->lif_cfg.udma_count;
+	attr->max_cqe = IONIC_MAX_CQ_DEPTH - IONIC_CQ_GRACE;
+	attr->max_mr = dev->lif_cfg.nmrs_per_lif;
+	attr->max_pd = IONIC_MAX_PD;
+	attr->max_qp_rd_atom = IONIC_MAX_RD_ATOM;
+	attr->max_ee_rd_atom = 0;
+	attr->max_res_rd_atom = IONIC_MAX_RD_ATOM;
+	attr->max_qp_init_rd_atom = IONIC_MAX_RD_ATOM;
+	attr->max_ee_init_rd_atom = 0;
+	attr->atomic_cap = IB_ATOMIC_GLOB;
+	attr->masked_atomic_cap = IB_ATOMIC_GLOB;
+	attr->max_mw = dev->lif_cfg.nmrs_per_lif;
+	attr->max_mcast_grp = 0;
+	attr->max_mcast_qp_attach = 0;
+	attr->max_ah = dev->lif_cfg.nahs_per_lif;
+	attr->max_fast_reg_page_list_len = dev->lif_cfg.npts_per_lif / 2;
+	attr->max_pkeys = IONIC_PKEY_TBL_LEN;
+
+	return 0;
+}
+
+static int ionic_query_port(struct ib_device *ibdev, u32 port,
+			    struct ib_port_attr *attr)
+{
+	struct net_device *ndev;
+
+	if (port != 1)
+		return -EINVAL;
+
+	ndev = ib_device_get_netdev(ibdev, port);
+
+	if (netif_running(ndev) && netif_carrier_ok(ndev)) {
+		attr->state = IB_PORT_ACTIVE;
+		attr->phys_state = IB_PORT_PHYS_STATE_LINK_UP;
+	} else if (netif_running(ndev)) {
+		attr->state = IB_PORT_DOWN;
+		attr->phys_state = IB_PORT_PHYS_STATE_POLLING;
+	} else {
+		attr->state = IB_PORT_DOWN;
+		attr->phys_state = IB_PORT_PHYS_STATE_DISABLED;
+	}
+
+	attr->max_mtu = iboe_get_mtu(ndev->max_mtu);
+	attr->active_mtu = min(attr->max_mtu, iboe_get_mtu(ndev->mtu));
+	attr->gid_tbl_len = IONIC_GID_TBL_LEN;
+	attr->ip_gids = true;
+	attr->port_cap_flags = 0;
+	attr->max_msg_sz = 0x80000000;
+	attr->pkey_tbl_len = IONIC_PKEY_TBL_LEN;
+	attr->max_vl_num = 1;
+	attr->subnet_prefix = 0xfe80000000000000ull;
+
+	dev_put(ndev);
+
+	return ib_get_eth_speed(ibdev, port,
+				&attr->active_speed,
+				&attr->active_width);
+}
+
+static enum rdma_link_layer ionic_get_link_layer(struct ib_device *ibdev,
+						 u32 port)
+{
+	return IB_LINK_LAYER_ETHERNET;
+}
+
+static int ionic_query_pkey(struct ib_device *ibdev, u32 port, u16 index,
+			    u16 *pkey)
+{
+	if (port != 1)
+		return -EINVAL;
+
+	if (index != 0)
+		return -EINVAL;
+
+	*pkey = IB_DEFAULT_PKEY_FULL;
+
+	return 0;
+}
+
+static int ionic_modify_device(struct ib_device *ibdev, int mask,
+			       struct ib_device_modify *attr)
+{
+	struct ionic_ibdev *dev = to_ionic_ibdev(ibdev);
+
+	if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
+		return -EOPNOTSUPP;
+
+	if (mask & IB_DEVICE_MODIFY_NODE_DESC)
+		memcpy(dev->ibdev.node_desc, attr->node_desc,
+		       IB_DEVICE_NODE_DESC_MAX);
+
+	return 0;
+}
+
+static int ionic_get_port_immutable(struct ib_device *ibdev, u32 port,
+				    struct ib_port_immutable *attr)
+{
+	if (port != 1)
+		return -EINVAL;
+
+	attr->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
+
+	attr->pkey_tbl_len = IONIC_PKEY_TBL_LEN;
+	attr->gid_tbl_len = IONIC_GID_TBL_LEN;
+	attr->max_mad_size = IB_MGMT_MAD_SIZE;
+
+	return 0;
+}
+
+static void ionic_get_dev_fw_str(struct ib_device *ibdev, char *str)
+{
+	struct ionic_ibdev *dev = to_ionic_ibdev(ibdev);
+
+	ionic_lif_fw_version(dev->lif_cfg.lif, str, IB_FW_VERSION_NAME_MAX);
+}
+
+static ssize_t hw_rev_show(struct device *device, struct device_attribute *attr,
+			   char *buf)
+{
+	struct ionic_ibdev *dev =
+		rdma_device_to_drv_device(device, struct ionic_ibdev, ibdev);
+
+	return sysfs_emit(buf, "0x%x\n", ionic_lif_asic_rev(dev->lif_cfg.lif));
+}
+static DEVICE_ATTR_RO(hw_rev);
+
+static ssize_t hca_type_show(struct device *device,
+			     struct device_attribute *attr, char *buf)
+{
+	struct ionic_ibdev *dev =
+		rdma_device_to_drv_device(device, struct ionic_ibdev, ibdev);
+
+	return sysfs_emit(buf, "%s\n", dev->ibdev.node_desc);
+}
+static DEVICE_ATTR_RO(hca_type);
+
+static struct attribute *ionic_rdma_attributes[] = {
+	&dev_attr_hw_rev.attr,
+	&dev_attr_hca_type.attr,
+	NULL
+};
+
+static const struct attribute_group ionic_rdma_attr_group = {
+	.attrs = ionic_rdma_attributes,
+};
+
+static void ionic_disassociate_ucontext(struct ib_ucontext *ibcontext)
+{
+	/*
+	 * Dummy define disassociate_ucontext so that it does not
+	 * wait for user context before cleaning up hw resources.
+	 */
+}
 
 static const struct ib_device_ops ionic_dev_ops = {
 	.owner = THIS_MODULE,
···
 	.post_recv = ionic_post_recv,
 	.poll_cq = ionic_poll_cq,
 	.req_notify_cq = ionic_req_notify_cq,
+
+	.query_device = ionic_query_device,
+	.query_port = ionic_query_port,
+	.get_link_layer = ionic_get_link_layer,
+	.query_pkey = ionic_query_pkey,
+	.modify_device = ionic_modify_device,
+	.get_port_immutable = ionic_get_port_immutable,
+	.get_dev_fw_str = ionic_get_dev_fw_str,
+	.device_group = &ionic_rdma_attr_group,
+	.disassociate_ucontext = ionic_disassociate_ucontext,
 
 	INIT_RDMA_OBJ_SIZE(ib_ucontext, ionic_ctx, ibctx),
 	INIT_RDMA_OBJ_SIZE(ib_pd, ionic_pd, ibpd),

drivers/infiniband/hw/ionic/ionic_ibdev.h

···
 #define IONIC_AQ_COUNT 4
 #define IONIC_EQ_ISR_BUDGET 10
 #define IONIC_EQ_WORK_BUDGET 1000
+#define IONIC_MAX_RD_ATOM 16
+#define IONIC_PKEY_TBL_LEN 1
+#define IONIC_GID_TBL_LEN 256
+
+#define IONIC_SPEC_HIGH 8
 #define IONIC_MAX_PD 1024
 #define IONIC_SPEC_HIGH 8
 #define IONIC_SQCMB_ORDER 5

drivers/infiniband/hw/ionic/ionic_lif_cfg.c

···
 	dev_hold(netdev);
 	return netdev;
 }
+
+void ionic_lif_fw_version(struct ionic_lif *lif, char *str, size_t len)
+{
+	strscpy(str, lif->ionic->idev.dev_info.fw_version, len);
+}
+
+u8 ionic_lif_asic_rev(struct ionic_lif *lif)
+{
+	return lif->ionic->idev.dev_info.asic_rev;
+}

drivers/infiniband/hw/ionic/ionic_lif_cfg.h

···
 
 void ionic_fill_lif_cfg(struct ionic_lif *lif, struct ionic_lif_cfg *cfg);
 struct net_device *ionic_lif_netdev(struct ionic_lif *lif);
+void ionic_lif_fw_version(struct ionic_lif *lif, char *str, size_t len);
+u8 ionic_lif_asic_rev(struct ionic_lif *lif);
 
 #endif /* _IONIC_LIF_CFG_H_ */