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-rw-r--r--drivers/infiniband/hw/nes/nes.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/nes/nes.c b/drivers/infiniband/hw/nes/nes.c
index a2b04d6..aa1dc41 100644
--- a/drivers/infiniband/hw/nes/nes.c
+++ b/drivers/infiniband/hw/nes/nes.c
@@ -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);
@@ -588,6 +592,18 @@ 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 */