[PATCH] forcedeth config: module parameters

This patch adds (and modifies) module parameter support.

Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index 6ee3e8d..e69a043 100644 (file)
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -761,8 +761,10 @@ static int max_interrupt_work = 5;
  * Throughput Mode: Every tx and rx packet will generate an interrupt.
  * CPU Mode: Interrupts are controlled by a timer.
  */
-#define NV_OPTIMIZATION_MODE_THROUGHPUT 0
-#define NV_OPTIMIZATION_MODE_CPU        1
+enum {
+       NV_OPTIMIZATION_MODE_THROUGHPUT,
+       NV_OPTIMIZATION_MODE_CPU
+};
 static int optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
 
 /*
@@ -775,14 +777,31 @@ static int optimization_mode = NV_OPTIMIZATION_MODE_THROUGHPUT;
 static int poll_interval = -1;
 
 /*
- * Disable MSI interrupts
+ * MSI interrupts
  */
-static int disable_msi = 0;
+enum {
+       NV_MSI_INT_DISABLED,
+       NV_MSI_INT_ENABLED
+};
+static int msi = NV_MSI_INT_ENABLED;
 
 /*
- * Disable MSIX interrupts
+ * MSIX interrupts
  */
-static int disable_msix = 0;
+enum {
+       NV_MSIX_INT_DISABLED,
+       NV_MSIX_INT_ENABLED
+};
+static int msix = NV_MSIX_INT_ENABLED;
+
+/*
+ * DMA 64bit
+ */
+enum {
+       NV_DMA_64BIT_DISABLED,
+       NV_DMA_64BIT_ENABLED
+};
+static int dma_64bit = NV_DMA_64BIT_ENABLED;
 
 static inline struct fe_priv *get_nvpriv(struct net_device *dev)
 {
@@ -4115,16 +4134,18 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
                /* packet format 3: supports 40-bit addressing */
                np->desc_ver = DESC_VER_3;
                np->txrxctl_bits = NVREG_TXRXCTL_DESC_3;
-               if (pci_set_dma_mask(pci_dev, DMA_39BIT_MASK)) {
-                       printk(KERN_INFO "forcedeth: 64-bit DMA failed, using 32-bit addressing for device %s.\n",
-                                       pci_name(pci_dev));
-               } else {
-                       dev->features |= NETIF_F_HIGHDMA;
-                       printk(KERN_INFO "forcedeth: using HIGHDMA\n");
-               }
-               if (pci_set_consistent_dma_mask(pci_dev, 0x0000007fffffffffULL)) {
-                       printk(KERN_INFO "forcedeth: 64-bit DMA (consistent) failed for device %s.\n",
-                              pci_name(pci_dev));
+               if (dma_64bit) {
+                       if (pci_set_dma_mask(pci_dev, DMA_39BIT_MASK)) {
+                               printk(KERN_INFO "forcedeth: 64-bit DMA failed, using 32-bit addressing for device %s.\n",
+                                      pci_name(pci_dev));
+                       } else {
+                               dev->features |= NETIF_F_HIGHDMA;
+                               printk(KERN_INFO "forcedeth: using HIGHDMA\n");
+                       }
+                       if (pci_set_consistent_dma_mask(pci_dev, DMA_39BIT_MASK)) {
+                               printk(KERN_INFO "forcedeth: 64-bit DMA (consistent) failed, using 32-bit ring buffers for device %s.\n",
+                                      pci_name(pci_dev));
+                       }
                }
        } else if (id->driver_data & DEV_HAS_LARGEDESC) {
                /* packet format 2: supports jumbo frames */
@@ -4157,10 +4178,10 @@ static int __devinit nv_probe(struct pci_dev *pci_dev, const struct pci_device_i
        }
 
        np->msi_flags = 0;
-       if ((id->driver_data & DEV_HAS_MSI) && !disable_msi) {
+       if ((id->driver_data & DEV_HAS_MSI) && msi) {
                np->msi_flags |= NV_MSI_CAPABLE;
        }
-       if ((id->driver_data & DEV_HAS_MSI_X) && !disable_msix) {
+       if ((id->driver_data & DEV_HAS_MSI_X) && msix) {
                np->msi_flags |= NV_MSI_X_CAPABLE;
        }
 
@@ -4473,10 +4494,12 @@ module_param(optimization_mode, int, 0);
 MODULE_PARM_DESC(optimization_mode, "In throughput mode (0), every tx & rx packet will generate an interrupt. In CPU mode (1), interrupts are controlled by a timer.");
 module_param(poll_interval, int, 0);
 MODULE_PARM_DESC(poll_interval, "Interval determines how frequent timer interrupt is generated by [(time_in_micro_secs * 100) / (2^10)]. Min is 0 and Max is 65535.");
-module_param(disable_msi, int, 0);
-MODULE_PARM_DESC(disable_msi, "Disable MSI interrupts by setting to 1.");
-module_param(disable_msix, int, 0);
-MODULE_PARM_DESC(disable_msix, "Disable MSIX interrupts by setting to 1.");
+module_param(msi, int, 0);
+MODULE_PARM_DESC(msi, "MSI interrupts are enabled by setting to 1 and disabled by setting to 0.");
+module_param(msix, int, 0);
+MODULE_PARM_DESC(msix, "MSIX interrupts are enabled by setting to 1 and disabled by setting to 0.");
+module_param(dma_64bit, int, 0);
+MODULE_PARM_DESC(dma_64bit, "High DMA is enabled by setting to 1 and disabled by setting to 0.");
 
 MODULE_AUTHOR("Manfred Spraul <manfred@colorfullife.com>");
 MODULE_DESCRIPTION("Reverse Engineered nForce ethernet driver");