myri10ge: prevent 4k rdma on SGI TIOCE chipset

Do not use 4k rdma request on SGI TIOCE chipset since this
bridge does not support it.

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index eab9b5a..68fd38b 100644 (file)
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -2524,6 +2524,12 @@ static void myri10ge_select_firmware(struct myri10ge_priv *mgp)
                                 bridge->vendor, bridge->device);
                        mgp->tx.boundary = 4096;
                        mgp->fw_name = myri10ge_fw_aligned;
+               } else if (bridge &&
+                          bridge->vendor == PCI_VENDOR_ID_SGI &&
+                          bridge->device == 0x4002 /* TIOCE pcie-port */ ) {
+                       /* this pcie bridge does not support 4K rdma request */
+                       mgp->tx.boundary = 2048;
+                       mgp->fw_name = myri10ge_fw_aligned;
                }
        } else {
                if (myri10ge_force_firmware == 1) {