Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[linux-2.6.git] / drivers / infiniband / hw / nes / nes.c
index fb7d243..b9611ad 100644 (file)
@@ -95,6 +95,10 @@ unsigned int wqm_quanta = 0x10000;
 module_param(wqm_quanta, int, 0644);
 MODULE_PARM_DESC(wqm_quanta, "WQM quanta");
 
+static unsigned int limit_maxrdreqsz;
+module_param(limit_maxrdreqsz, bool, 0644);
+MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes");
+
 LIST_HEAD(nes_adapter_list);
 static LIST_HEAD(nes_dev_list);
 
@@ -581,6 +585,18 @@ static int __devinit nes_probe(struct pci_dev *pcidev, const struct pci_device_i
                                                nesdev->nesadapter->port_count;
        }
 
+       if ((limit_maxrdreqsz ||
+            ((nesdev->nesadapter->phy_type[0] == NES_PHY_TYPE_GLADIUS) &&
+             (hw_rev == NE020_REV1))) &&
+           (pcie_get_readrq(pcidev) > 256)) {
+               if (pcie_set_readrq(pcidev, 256))
+                       printk(KERN_ERR PFX "Unable to set max read request"
+                               " to 256 bytes\n");
+               else
+                       nes_debug(NES_DBG_INIT, "Max read request size set"
+                               " to 256 bytes\n");
+       }
+
        tasklet_init(&nesdev->dpc_tasklet, nes_dpc, (unsigned long)nesdev);
 
        /* bring up the Control QP */