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>

diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index 5edcbfe..054168f 100644 (file)
--- 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)