myri10ge: cleanup retrieving of firmware capabilities

Add myri10ge_get_firmware_capabilities() to retrieve TSO6 and
interrupt slots capabilities from the firmware.

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Andrew Gallatin <gallatin@myri.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 31 insertions, 11 deletions

diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index 5edcbfe93065..054168faf292 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -194,6 +194,7 @@ struct myri10ge_priv {
         int csum_flag;          /* rx_csums?            */
         int small_bytes;
         int big_bytes;
+        int max_intr_slots;
         struct net_device *dev;
         struct net_device_stats stats;
         spinlock_t stats_lock;
@@ -634,13 +635,38 @@ static int myri10ge_adopt_running_firmware(struct myri10ge_priv *mgp)
         return status;
 }
 
+int myri10ge_get_firmware_capabilities(struct myri10ge_priv *mgp)
+{
+        struct myri10ge_cmd cmd;
+        int status;
+
+        /* probe for IPv6 TSO support */
+        mgp->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO;
+        status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_TSO6_HDR_SIZE,
+                                   &cmd, 0);
+        if (status == 0) {
+                mgp->max_tso6 = cmd.data0;
+                mgp->features |= NETIF_F_TSO6;
+        }
+
+        status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_RX_RING_SIZE, &cmd, 0);
+        if (status != 0) {
+                dev_err(&mgp->pdev->dev,
+                        "failed MXGEFW_CMD_GET_RX_RING_SIZE\n");
+                return -ENXIO;
+        }
+
+        mgp->max_intr_slots = 2 * (cmd.data0 / sizeof(struct mcp_dma_addr));
+
+        return 0;
+}
+
 static int myri10ge_load_firmware(struct myri10ge_priv *mgp)
 {
         char __iomem *submit;
         __be32 buf[16] __attribute__ ((__aligned__(8)));
         u32 dma_low, dma_high, size;
         int status, i;
-        struct myri10ge_cmd cmd;
 
         size = 0;
         status = myri10ge_load_hotplug_firmware(mgp, &size);
@@ -672,6 +698,8 @@ static int myri10ge_load_firmware(struct myri10ge_priv *mgp)
 
                 mgp->fw_name = "adopted";
                 mgp->tx_boundary = 2048;
+                myri10ge_dummy_rdma(mgp, 1);
+                status = myri10ge_get_firmware_capabilities(mgp);
                 return status;
         }
 
@@ -714,18 +742,10 @@ static int myri10ge_load_firmware(struct myri10ge_priv *mgp)
                 dev_err(&mgp->pdev->dev, "handoff failed\n");
                 return -ENXIO;
         }
-        dev_info(&mgp->pdev->dev, "handoff confirmed\n");
         myri10ge_dummy_rdma(mgp, 1);
+        status = myri10ge_get_firmware_capabilities(mgp);
 
-        /* probe for IPv6 TSO support */
-        mgp->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO;
-        status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_TSO6_HDR_SIZE,
-                                   &cmd, 0);
-        if (status == 0) {
-                mgp->max_tso6 = cmd.data0;
-                mgp->features |= NETIF_F_TSO6;
-        }
-        return 0;
+        return status;
 }
 
 static int myri10ge_update_mac_address(struct myri10ge_priv *mgp, u8 * addr)