Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 476 insertions, 0 deletions

diff --git a/drivers/net/ixgb/ixgb_param.c b/drivers/net/ixgb/ixgb_param.c
new file mode 100644
index 000000000000..8a83dfdf746d
--- /dev/null
+++ b/drivers/net/ixgb/ixgb_param.c
@@ -0,0 +1,476 @@
+/*******************************************************************************
+
+  
+  Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
+  
+  This program is free software; you can redistribute it and/or modify it 
+  under the terms of the GNU General Public License as published by the Free 
+  Software Foundation; either version 2 of the License, or (at your option) 
+  any later version.
+  
+  This program is distributed in the hope that it will be useful, but WITHOUT 
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for 
+  more details.
+  
+  You should have received a copy of the GNU General Public License along with
+  this program; if not, write to the Free Software Foundation, Inc., 59 
+  Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+  
+  The full GNU General Public License is included in this distribution in the
+  file called LICENSE.
+  
+  Contact Information:
+  Linux NICS <linux.nics@intel.com>
+  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+#include "ixgb.h"
+
+/* This is the only thing that needs to be changed to adjust the
+ * maximum number of ports that the driver can manage.
+ */
+
+#define IXGB_MAX_NIC 8
+
+#define OPTION_UNSET	-1
+#define OPTION_DISABLED 0
+#define OPTION_ENABLED  1
+
+/* All parameters are treated the same, as an integer array of values.
+ * This macro just reduces the need to repeat the same declaration code
+ * over and over (plus this helps to avoid typo bugs).
+ */
+
+#define IXGB_PARAM_INIT { [0 ... IXGB_MAX_NIC] = OPTION_UNSET }
+#define IXGB_PARAM(X, desc) \
+	static int __devinitdata X[IXGB_MAX_NIC+1] = IXGB_PARAM_INIT; \
+	static int num_##X = 0; \
+	module_param_array_named(X, X, int, &num_##X, 0); \
+	MODULE_PARM_DESC(X, desc);
+
+/* Transmit Descriptor Count
+ *
+ * Valid Range: 64-4096
+ *
+ * Default Value: 256
+ */
+
+IXGB_PARAM(TxDescriptors, "Number of transmit descriptors");
+
+/* Receive Descriptor Count
+ *
+ * Valid Range: 64-4096
+ *
+ * Default Value: 1024
+ */
+
+IXGB_PARAM(RxDescriptors, "Number of receive descriptors");
+
+/* User Specified Flow Control Override
+ *
+ * Valid Range: 0-3
+ *  - 0 - No Flow Control
+ *  - 1 - Rx only, respond to PAUSE frames but do not generate them
+ *  - 2 - Tx only, generate PAUSE frames but ignore them on receive
+ *  - 3 - Full Flow Control Support
+ *
+ * Default Value: Read flow control settings from the EEPROM
+ */
+
+IXGB_PARAM(FlowControl, "Flow Control setting");
+
+/* XsumRX - Receive Checksum Offload Enable/Disable
+ *
+ * Valid Range: 0, 1
+ *  - 0 - disables all checksum offload
+ *  - 1 - enables receive IP/TCP/UDP checksum offload
+ *        on 82597 based NICs
+ *
+ * Default Value: 1
+ */
+
+IXGB_PARAM(XsumRX, "Disable or enable Receive Checksum offload");
+
+/* Transmit Interrupt Delay in units of 0.8192 microseconds
+ *
+ * Valid Range: 0-65535
+ *
+ * Default Value: 32
+ */
+
+IXGB_PARAM(TxIntDelay, "Transmit Interrupt Delay");
+
+/* Receive Interrupt Delay in units of 0.8192 microseconds
+ *
+ * Valid Range: 0-65535
+ *
+ * Default Value: 72
+ */
+
+IXGB_PARAM(RxIntDelay, "Receive Interrupt Delay");
+
+/* Receive Flow control high threshold (when we send a pause frame)
+ * (FCRTH)
+ *
+ * Valid Range: 1,536 - 262,136 (0x600 - 0x3FFF8, 8 byte granularity)
+ *
+ * Default Value: 196,608 (0x30000)
+ */
+
+IXGB_PARAM(RxFCHighThresh, "Receive Flow Control High Threshold");
+
+/* Receive Flow control low threshold (when we send a resume frame)
+ * (FCRTL)
+ *
+ * Valid Range: 64 - 262,136 (0x40 - 0x3FFF8, 8 byte granularity)
+ *              must be less than high threshold by at least 8 bytes
+ *
+ * Default Value:  163,840 (0x28000)
+ */
+
+IXGB_PARAM(RxFCLowThresh, "Receive Flow Control Low Threshold");
+
+/* Flow control request timeout (how long to pause the link partner's tx)
+ * (PAP 15:0)
+ *
+ * Valid Range: 1 - 65535 
+ *
+ * Default Value:  256 (0x100)
+ */
+
+IXGB_PARAM(FCReqTimeout, "Flow Control Request Timeout");
+
+/* Interrupt Delay Enable
+ *
+ * Valid Range: 0, 1
+ *
+ *  - 0 - disables transmit interrupt delay
+ *  - 1 - enables transmmit interrupt delay
+ *
+ * Default Value: 1
+ */
+
+IXGB_PARAM(IntDelayEnable, "Transmit Interrupt Delay Enable");
+
+
+#define DEFAULT_TIDV	   		     32
+#define MAX_TIDV			 0xFFFF
+#define MIN_TIDV			      0
+
+#define DEFAULT_RDTR		   	     72
+#define MAX_RDTR			 0xFFFF
+#define MIN_RDTR			      0
+
+#define XSUMRX_DEFAULT		 OPTION_ENABLED
+
+#define FLOW_CONTROL_FULL	   ixgb_fc_full
+#define FLOW_CONTROL_DEFAULT  FLOW_CONTROL_FULL
+#define DEFAULT_FCRTL	  		0x28000
+#define DEFAULT_FCRTH			0x30000
+#define MIN_FCRTL			      0
+#define MAX_FCRTL			0x3FFE8
+#define MIN_FCRTH			      8
+#define MAX_FCRTH			0x3FFF0
+
+#define DEFAULT_FCPAUSE		  	0x100	/* this may be too long */
+#define MIN_FCPAUSE			      1
+#define MAX_FCPAUSE			 0xffff
+
+struct ixgb_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 ixgb_opt_list {
+				int i;
+				char *str;
+			} *p;
+		} l;
+	} arg;
+};
+
+static int __devinit
+ixgb_validate_option(int *value, struct ixgb_option *opt)
+{
+	if(*value == OPTION_UNSET) {
+		*value = opt->def;
+		return 0;
+	}
+
+	switch (opt->type) {
+	case enable_option:
+		switch (*value) {
+		case OPTION_ENABLED:
+			printk(KERN_INFO "%s Enabled\n", opt->name);
+			return 0;
+		case OPTION_DISABLED:
+			printk(KERN_INFO "%s Disabled\n", opt->name);
+			return 0;
+		}
+		break;
+	case range_option:
+		if(*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
+			printk(KERN_INFO "%s set to %i\n", opt->name, *value);
+			return 0;
+		}
+		break;
+	case list_option: {
+		int i;
+		struct ixgb_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')
+					printk(KERN_INFO "%s\n", ent->str);
+				return 0;
+			}
+		}
+	}
+		break;
+	default:
+		BUG();
+	}
+
+	printk(KERN_INFO "Invalid %s specified (%i) %s\n",
+		   opt->name, *value, opt->err);
+	*value = opt->def;
+	return -1;
+}
+
+#define LIST_LEN(l) (sizeof(l) / sizeof(l[0]))
+
+/**
+ * ixgb_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
+ixgb_check_options(struct ixgb_adapter *adapter)
+{
+	int bd = adapter->bd_number;
+	if(bd >= IXGB_MAX_NIC) {
+		printk(KERN_NOTICE
+			   "Warning: no configuration for board #%i\n", bd);
+		printk(KERN_NOTICE "Using defaults for all values\n");
+	}
+
+	{ /* Transmit Descriptor Count */
+		struct ixgb_option opt = {
+			.type = range_option,
+			.name = "Transmit Descriptors",
+			.err  = "using default of " __MODULE_STRING(DEFAULT_TXD),
+			.def  = DEFAULT_TXD,
+			.arg  = { .r = { .min = MIN_TXD,
+					 .max = MAX_TXD}}
+		};
+		struct ixgb_desc_ring *tx_ring = &adapter->tx_ring;
+
+		if(num_TxDescriptors > bd) {
+			tx_ring->count = TxDescriptors[bd];
+			ixgb_validate_option(&tx_ring->count, &opt);
+		} else {
+			tx_ring->count = opt.def;
+		}
+		IXGB_ROUNDUP(tx_ring->count, IXGB_REQ_TX_DESCRIPTOR_MULTIPLE);
+	}
+	{ /* Receive Descriptor Count */
+		struct ixgb_option opt = {
+			.type = range_option,
+			.name = "Receive Descriptors",
+			.err  = "using default of " __MODULE_STRING(DEFAULT_RXD),
+			.def  = DEFAULT_RXD,
+			.arg  = { .r = { .min = MIN_RXD,
+					 .max = MAX_RXD}}
+		};
+		struct ixgb_desc_ring *rx_ring = &adapter->rx_ring;
+
+		if(num_RxDescriptors > bd) {
+			rx_ring->count = RxDescriptors[bd];
+			ixgb_validate_option(&rx_ring->count, &opt);
+		} else {
+			rx_ring->count = opt.def;
+		}
+		IXGB_ROUNDUP(rx_ring->count, IXGB_REQ_RX_DESCRIPTOR_MULTIPLE);
+	}
+	{ /* Receive Checksum Offload Enable */
+		struct ixgb_option opt = {
+			.type = enable_option,
+			.name = "Receive Checksum Offload",
+			.err  = "defaulting to Enabled",
+			.def  = OPTION_ENABLED
+		};
+
+		if(num_XsumRX > bd) {
+			int rx_csum = XsumRX[bd];
+			ixgb_validate_option(&rx_csum, &opt);
+			adapter->rx_csum = rx_csum;
+		} else {
+			adapter->rx_csum = opt.def;
+		}
+	}
+	{ /* Flow Control */
+
+		struct ixgb_opt_list fc_list[] =
+			{{ ixgb_fc_none,	"Flow Control Disabled" },
+			 { ixgb_fc_rx_pause,"Flow Control Receive Only" },
+			 { ixgb_fc_tx_pause,"Flow Control Transmit Only" },
+			 { ixgb_fc_full,	"Flow Control Enabled" },
+			 { ixgb_fc_default, "Flow Control Hardware Default" }};
+
+		struct ixgb_option opt = {
+			.type = list_option,
+			.name = "Flow Control",
+			.err  = "reading default settings from EEPROM",
+			.def  = ixgb_fc_full,
+			.arg  = { .l = { .nr = LIST_LEN(fc_list),
+					 .p = fc_list }}
+		};
+
+		if(num_FlowControl > bd) {
+			int fc = FlowControl[bd];
+			ixgb_validate_option(&fc, &opt);
+			adapter->hw.fc.type = fc;
+		} else {
+			adapter->hw.fc.type = opt.def;
+		}
+	}
+	{ /* Receive Flow Control High Threshold */
+		struct ixgb_option opt = {
+			.type = range_option,
+			.name = "Rx Flow Control High Threshold",
+			.err  = "using default of " __MODULE_STRING(DEFAULT_FCRTH),
+			.def  = DEFAULT_FCRTH,
+			.arg  = { .r = { .min = MIN_FCRTH,
+					 .max = MAX_FCRTH}}
+		};
+
+		if(num_RxFCHighThresh > bd) {
+			adapter->hw.fc.high_water = RxFCHighThresh[bd];
+			ixgb_validate_option(&adapter->hw.fc.high_water, &opt);
+		} else {
+			adapter->hw.fc.high_water = opt.def;
+		}
+		if(!(adapter->hw.fc.type & ixgb_fc_rx_pause) )
+			printk (KERN_INFO 
+				"Ignoring RxFCHighThresh when no RxFC\n");
+	}
+	{ /* Receive Flow Control Low Threshold */
+		struct ixgb_option opt = {
+			.type = range_option,
+			.name = "Rx Flow Control Low Threshold",
+			.err  = "using default of " __MODULE_STRING(DEFAULT_FCRTL),
+			.def  = DEFAULT_FCRTL,
+			.arg  = { .r = { .min = MIN_FCRTL,
+					 .max = MAX_FCRTL}}
+		};
+
+		if(num_RxFCLowThresh > bd) {
+			adapter->hw.fc.low_water = RxFCLowThresh[bd];
+			ixgb_validate_option(&adapter->hw.fc.low_water, &opt);
+		} else {
+			adapter->hw.fc.low_water = opt.def;
+		}
+		if(!(adapter->hw.fc.type & ixgb_fc_rx_pause) )
+			printk (KERN_INFO 
+				"Ignoring RxFCLowThresh when no RxFC\n");
+	}
+	{ /* Flow Control Pause Time Request*/
+		struct ixgb_option opt = {
+			.type = range_option,
+			.name = "Flow Control Pause Time Request",
+			.err  = "using default of "__MODULE_STRING(DEFAULT_FCPAUSE),
+			.def  = DEFAULT_FCPAUSE,
+			.arg = { .r = { .min = MIN_FCPAUSE,
+					.max = MAX_FCPAUSE}}
+		};
+
+		if(num_FCReqTimeout > bd) {
+			int pause_time = FCReqTimeout[bd];
+			ixgb_validate_option(&pause_time, &opt);
+			adapter->hw.fc.pause_time = pause_time;
+		} else {
+			adapter->hw.fc.pause_time = opt.def;
+		}
+		if(!(adapter->hw.fc.type & ixgb_fc_rx_pause) )
+			printk (KERN_INFO 
+				"Ignoring FCReqTimeout when no RxFC\n");
+	}
+	/* high low and spacing check for rx flow control thresholds */
+	if (adapter->hw.fc.type & ixgb_fc_rx_pause) {
+		/* high must be greater than low */
+		if (adapter->hw.fc.high_water < (adapter->hw.fc.low_water + 8)) {
+			/* set defaults */
+			printk (KERN_INFO 
+				"RxFCHighThresh must be >= (RxFCLowThresh + 8), "
+				"Using Defaults\n");
+			adapter->hw.fc.high_water = DEFAULT_FCRTH;
+			adapter->hw.fc.low_water  = DEFAULT_FCRTL;
+		}
+	}
+	{ /* Receive Interrupt Delay */
+		struct ixgb_option opt = {
+			.type = range_option,
+			.name = "Receive Interrupt Delay",
+			.err  = "using default of " __MODULE_STRING(DEFAULT_RDTR),
+			.def  = DEFAULT_RDTR,
+			.arg  = { .r = { .min = MIN_RDTR,
+					 .max = MAX_RDTR}}
+		};
+
+		if(num_RxIntDelay > bd) {
+			adapter->rx_int_delay = RxIntDelay[bd];
+			ixgb_validate_option(&adapter->rx_int_delay, &opt);
+		} else {
+			adapter->rx_int_delay = opt.def;
+		}
+	}
+	{ /* Transmit Interrupt Delay */
+		struct ixgb_option opt = {
+			.type = range_option,
+			.name = "Transmit Interrupt Delay",
+			.err  = "using default of " __MODULE_STRING(DEFAULT_TIDV),
+			.def  = DEFAULT_TIDV,
+			.arg  = { .r = { .min = MIN_TIDV,
+					 .max = MAX_TIDV}}
+		};
+
+		if(num_TxIntDelay > bd) {
+			adapter->tx_int_delay = TxIntDelay[bd];
+			ixgb_validate_option(&adapter->tx_int_delay, &opt);
+		} else {
+			adapter->tx_int_delay = opt.def;
+		}
+	}
+
+	{ /* Transmit Interrupt Delay Enable */
+		struct ixgb_option opt = {
+			.type = enable_option,
+			.name = "Tx Interrupt Delay Enable",
+			.err  = "defaulting to Enabled",
+			.def  = OPTION_ENABLED
+		};
+
+		if(num_IntDelayEnable > bd) {
+			int ide = IntDelayEnable[bd];
+			ixgb_validate_option(&ide, &opt);
+			adapter->tx_int_delay_enable = ide;
+		} else {
+			adapter->tx_int_delay_enable = opt.def;
+		}
+	}
+}