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path: root/drivers/net/atlx/atl1.c
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Diffstat (limited to 'drivers/net/atlx/atl1.c')
-rw-r--r--drivers/net/atlx/atl1.c138
1 files changed, 138 insertions, 0 deletions
diff --git a/drivers/net/atlx/atl1.c b/drivers/net/atlx/atl1.c
index 5586fc6..0afe522 100644
--- a/drivers/net/atlx/atl1.c
+++ b/drivers/net/atlx/atl1.c
@@ -91,6 +91,144 @@
#include "atlx.c"
/*
+ * This is the only thing that needs to be changed to adjust the
+ * maximum number of ports that the driver can manage.
+ */
+#define ATL1_MAX_NIC 4
+
+#define OPTION_UNSET -1
+#define OPTION_DISABLED 0
+#define OPTION_ENABLED 1
+
+#define ATL1_PARAM_INIT { [0 ... ATL1_MAX_NIC] = OPTION_UNSET }
+
+/*
+ * Interrupt Moderate Timer in units of 2 us
+ *
+ * Valid Range: 10-65535
+ *
+ * Default Value: 100 (200us)
+ */
+static int __devinitdata int_mod_timer[ATL1_MAX_NIC+1] = ATL1_PARAM_INIT;
+static int num_int_mod_timer;
+module_param_array_named(int_mod_timer, int_mod_timer, int,
+ &num_int_mod_timer, 0);
+MODULE_PARM_DESC(int_mod_timer, "Interrupt moderator timer");
+
+#define DEFAULT_INT_MOD_CNT 100 /* 200us */
+#define MAX_INT_MOD_CNT 65000
+#define MIN_INT_MOD_CNT 50
+
+struct atl1_option {
+ enum { enable_option, range_option, list_option } type;
+ char *name;
+ char *err;
+ int def;
+ union {
+ struct { /* range_option info */
+ int min;
+ int max;
+ } r;
+ struct { /* list_option info */
+ int nr;
+ struct atl1_opt_list {
+ int i;
+ char *str;
+ } *p;
+ } l;
+ } arg;
+};
+
+static int __devinit atl1_validate_option(int *value, struct atl1_option *opt,
+ struct pci_dev *pdev)
+{
+ if (*value == OPTION_UNSET) {
+ *value = opt->def;
+ return 0;
+ }
+
+ switch (opt->type) {
+ case enable_option:
+ switch (*value) {
+ case OPTION_ENABLED:
+ dev_info(&pdev->dev, "%s enabled\n", opt->name);
+ return 0;
+ case OPTION_DISABLED:
+ dev_info(&pdev->dev, "%s disabled\n", opt->name);
+ return 0;
+ }
+ break;
+ case range_option:
+ if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
+ dev_info(&pdev->dev, "%s set to %i\n", opt->name,
+ *value);
+ return 0;
+ }
+ break;
+ case list_option:{
+ int i;
+ struct atl1_opt_list *ent;
+
+ for (i = 0; i < opt->arg.l.nr; i++) {
+ ent = &opt->arg.l.p[i];
+ if (*value == ent->i) {
+ if (ent->str[0] != '\0')
+ dev_info(&pdev->dev, "%s\n",
+ ent->str);
+ return 0;
+ }
+ }
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ dev_info(&pdev->dev, "invalid %s specified (%i) %s\n",
+ opt->name, *value, opt->err);
+ *value = opt->def;
+ return -1;
+}
+
+/*
+ * atl1_check_options - Range Checking for Command Line Parameters
+ * @adapter: board private structure
+ *
+ * This routine checks all command line parameters for valid user
+ * input. If an invalid value is given, or if no user specified
+ * value exists, a default value is used. The final value is stored
+ * in a variable in the adapter structure.
+ */
+void __devinit atl1_check_options(struct atl1_adapter *adapter)
+{
+ struct pci_dev *pdev = adapter->pdev;
+ int bd = adapter->bd_number;
+ if (bd >= ATL1_MAX_NIC) {
+ dev_notice(&pdev->dev, "no configuration for board#%i\n", bd);
+ dev_notice(&pdev->dev, "using defaults for all values\n");
+ }
+ { /* Interrupt Moderate Timer */
+ struct atl1_option opt = {
+ .type = range_option,
+ .name = "Interrupt Moderator Timer",
+ .err = "using default of "
+ __MODULE_STRING(DEFAULT_INT_MOD_CNT),
+ .def = DEFAULT_INT_MOD_CNT,
+ .arg = {.r = {.min = MIN_INT_MOD_CNT,
+ .max = MAX_INT_MOD_CNT} }
+ };
+ int val;
+ if (num_int_mod_timer > bd) {
+ val = int_mod_timer[bd];
+ atl1_validate_option(&val, &opt, pdev);
+ adapter->imt = (u16) val;
+ } else
+ adapter->imt = (u16) (opt.def);
+ }
+}
+
+/*
* atl1_pci_tbl - PCI Device ID Table
*/
static const struct pci_device_id atl1_pci_tbl[] = {