mlx4: Structures and init/teardown for VF resource quotas

[cascardo/linux.git] / drivers / net / ethernet / mellanox / mlx4 / main.c

diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c
index 60c9f4f..7d2628d 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/main.c
@@ -42,6 +42,7 @@
 #include <linux/io-mapping.h>
 #include <linux/delay.h>
 #include <linux/netdevice.h>
+#include <linux/kmod.h>
 
 #include <linux/mlx4/device.h>
 #include <linux/mlx4/doorbell.h>
@@ -561,13 +562,17 @@ static int mlx4_slave_cap(struct mlx4_dev *dev)
        }
 
        dev->caps.num_ports             = func_cap.num_ports;
-       dev->caps.num_qps               = func_cap.qp_quota;
-       dev->caps.num_srqs              = func_cap.srq_quota;
-       dev->caps.num_cqs               = func_cap.cq_quota;
-       dev->caps.num_eqs               = func_cap.max_eq;
-       dev->caps.reserved_eqs          = func_cap.reserved_eq;
-       dev->caps.num_mpts              = func_cap.mpt_quota;
-       dev->caps.num_mtts              = func_cap.mtt_quota;
+       dev->quotas.qp                  = func_cap.qp_quota;
+       dev->quotas.srq                 = func_cap.srq_quota;
+       dev->quotas.cq                  = func_cap.cq_quota;
+       dev->quotas.mpt                 = func_cap.mpt_quota;
+       dev->quotas.mtt                 = func_cap.mtt_quota;
+       dev->caps.num_qps               = 1 << hca_param.log_num_qps;
+       dev->caps.num_srqs              = 1 << hca_param.log_num_srqs;
+       dev->caps.num_cqs               = 1 << hca_param.log_num_cqs;
+       dev->caps.num_mpts              = 1 << hca_param.log_mpt_sz;
+       dev->caps.num_eqs               = func_cap.max_eq;
+       dev->caps.reserved_eqs          = func_cap.reserved_eq;
        dev->caps.num_pds               = MLX4_NUM_PDS;
        dev->caps.num_mgms              = 0;
        dev->caps.num_amgms             = 0;
@@ -650,6 +655,27 @@ err_mem:
        return err;
 }
 
+static void mlx4_request_modules(struct mlx4_dev *dev)
+{
+       int port;
+       int has_ib_port = false;
+       int has_eth_port = false;
+#define EN_DRV_NAME    "mlx4_en"
+#define IB_DRV_NAME    "mlx4_ib"
+
+       for (port = 1; port <= dev->caps.num_ports; port++) {
+               if (dev->caps.port_type[port] == MLX4_PORT_TYPE_IB)
+                       has_ib_port = true;
+               else if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
+                       has_eth_port = true;
+       }
+
+       if (has_ib_port)
+               request_module_nowait(IB_DRV_NAME);
+       if (has_eth_port)
+               request_module_nowait(EN_DRV_NAME);
+}
+
 /*
  * Change the port configuration of the device.
  * Every user of this function must hold the port mutex.
@@ -681,6 +707,11 @@ int mlx4_change_port_types(struct mlx4_dev *dev,
                }
                mlx4_set_port_mask(dev);
                err = mlx4_register_device(dev);
+               if (err) {
+                       mlx4_err(dev, "Failed to register device\n");
+                       goto out;
+               }
+               mlx4_request_modules(dev);
        }
 
 out:
@@ -2075,9 +2106,15 @@ static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data)
                        "aborting.\n");
                return err;
        }
-       if (num_vfs > MLX4_MAX_NUM_VF) {
-               printk(KERN_ERR "There are more VF's (%d) than allowed(%d)\n",
-                      num_vfs, MLX4_MAX_NUM_VF);
+
+       /* Due to requirement that all VFs and the PF are *guaranteed* 2 MACS
+        * per port, we must limit the number of VFs to 63 (since their are
+        * 128 MACs)
+        */
+       if (num_vfs >= MLX4_MAX_NUM_VF) {
+               dev_err(&pdev->dev,
+                       "Requested more VF's (%d) than allowed (%d)\n",
+                       num_vfs, MLX4_MAX_NUM_VF - 1);
                return -EINVAL;
        }
 
@@ -2295,6 +2332,8 @@ slave_start:
        if (err)
                goto err_steer;
 
+       mlx4_init_quotas(dev);
+
        for (port = 1; port <= dev->caps.num_ports; port++) {
                err = mlx4_init_port_info(dev, port);
                if (err)
@@ -2305,6 +2344,8 @@ slave_start:
        if (err)
                goto err_port;
 
+       mlx4_request_modules(dev);
+
        mlx4_sense_init(dev);
        mlx4_start_sense(dev);