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Subject[PATCH] ewrk3: Add support for multiple NICs when modular (WAS: Looking for testers...)
Testing is in progress... Three NICs, 2 CPU SMP, preempt enabled. No problems so
far. For my own convenience I wanted support for multiple NICs when the driver
is built as a module, so here's a fairly simple patch to add that capability.
Against 2.5.41 + your cli/sti removal patch.

--Adam

--- linux-2.5.41/drivers/net/ewrk3.c Wed Oct 9 21:29:15 2002
+++ linux-2.5.41-fix2/drivers/net/ewrk3.c Wed Oct 9 21:40:23 2002
@@ -76,6 +76,7 @@
kernel with the ewrk3 configuration turned off and reboot.
5) insmod ewrk3.o
[Alan Cox: Changed this so you can insmod ewrk3.o irq=x io=y]
+ [Adam Kropelin: now accepts irq=x1,x2 io=y1,y2 for multiple cards]
6) run the net startup bits for your new eth?? interface manually
(usually /etc/rc.inet[12] at boot time).
7) enjoy!
@@ -130,10 +131,12 @@
Add new multicasting code.
0.41 20-Jan-96 Fix IRQ set up problem reported by
<kenneth@bbs.sas.ntu.ac.sg>.
- 0.42 22-Apr-96 Fix alloc_device() bug <jari@markkus2.fimr.fi>
- 0.43 16-Aug-96 Update alloc_device() to conform to de4x5.c
- 0.44 08-Nov-01 use library crc32 functions <Matt_Domsch@dell.com>
- 0.45 19-Jul-02 fix unaligned access on alpha <martin@bruli.net>
+ 0.42 22-Apr-96 Fix alloc_device() bug <jari@markkus2.fimr.fi>
+ 0.43 16-Aug-96 Update alloc_device() to conform to de4x5.c
+ 0.44 08-Nov-01 use library crc32 functions <Matt_Domsch@dell.com>
+ 0.45 19-Jul-02 fix unaligned access on alpha <martin@bruli.net>
+ 0.46 10-Oct-02 cli/sti removal <VDA@port.imtp.ilyichevsk.odessa.ua>
+ Multiple NIC support when module <akropel1@rochester.rr.com>

=========================================================================
*/
@@ -167,7 +170,7 @@
#include "ewrk3.h"

static char version[] __initdata =
-"ewrk3.c:v0.43a 2001/02/04 davies@maniac.ultranet.com\n";
+"ewrk3.c:v0.46 2002/10/09 davies@maniac.ultranet.com\n";

#ifdef EWRK3_DEBUG
static int ewrk3_debug = EWRK3_DEBUG;
@@ -196,6 +199,7 @@
#define EWRK3_IOP_INC 0x20 /* I/O address increment */
#define EWRK3_TOTAL_SIZE 0x20 /* required I/O address length */

+/* If you change this, remember to also change MODULE_PARM array limits */
#ifndef MAX_NUM_EWRK3S
#define MAX_NUM_EWRK3S 21
#endif
@@ -1853,35 +1857,62 @@
}

#ifdef MODULE
-static struct net_device thisEthwrk;
-static int io = 0x300; /* <--- EDIT THESE LINES FOR YOUR CONFIGURATION */
-static int irq = 5; /* or use the insmod io= irq= options */
-
-MODULE_PARM(io, "i");
-MODULE_PARM(irq, "i");
-MODULE_PARM_DESC(io, "EtherWORKS 3 I/O base address");
-MODULE_PARM_DESC(irq, "EtherWORKS 3 IRQ number");
+static struct net_device *ewrk3_devs[MAX_NUM_EWRK3S];
+static int ndevs;
+static int io[MAX_NUM_EWRK3S+1] = { 0x300, 0, }; /* <--- EDIT THESE LINES FOR YOUR CONFIGURATION */
+static int irq[MAX_NUM_EWRK3S+1] = { 5, 0, }; /* or use the insmod io= irq= options */
+
+/* '21' below should really be 'MAX_NUM_EWRK3S' */
+MODULE_PARM(io, "0-21i");
+MODULE_PARM(irq, "0-21i");
+MODULE_PARM_DESC(io, "EtherWORKS 3 I/O base address(es)");
+MODULE_PARM_DESC(irq, "EtherWORKS 3 IRQ number(s)");

int init_module(void)
{
- thisEthwrk.base_addr = io;
- thisEthwrk.irq = irq;
- thisEthwrk.init = ewrk3_probe;
- if (register_netdev(&thisEthwrk) != 0)
- return -EIO;
- return 0;
+ int i=0;
+
+ while( io[i] && irq[i] ) {
+ ewrk3_devs[ndevs] = kmalloc(sizeof(struct net_device), GFP_KERNEL);
+ if (!ewrk3_devs[ndevs])
+ goto error;
+ memset(ewrk3_devs[ndevs], 0, sizeof(struct net_device));
+ ewrk3_devs[ndevs]->base_addr = io[i];
+ ewrk3_devs[ndevs]->irq = irq[i];
+ ewrk3_devs[ndevs]->init = ewrk3_probe;
+
+ if (register_netdev(ewrk3_devs[ndevs]) == 0)
+ ndevs++;
+ else
+ kfree(ewrk3_devs[ndevs]);
+
+ i++;
+ }
+
+ return ndevs ? 0 : -EIO;
+
+error:
+ cleanup_module();
+ return -ENOMEM;
}

void cleanup_module(void)
{
- unregister_netdev(&thisEthwrk);
- if (thisEthwrk.priv) {
- kfree(thisEthwrk.priv);
- thisEthwrk.priv = NULL;
- }
- thisEthwrk.irq = 0;
+ int i;

- release_region(thisEthwrk.base_addr, EWRK3_TOTAL_SIZE);
+ for( i=0; i<ndevs; i++ )
+ {
+ unregister_netdev(ewrk3_devs[i]);
+ if (ewrk3_devs[i]->priv) {
+ kfree(ewrk3_devs[i]->priv);
+ ewrk3_devs[i]->priv = NULL;
+ }
+ ewrk3_devs[i]->irq = 0;
+
+ release_region(ewrk3_devs[i]->base_addr, EWRK3_TOTAL_SIZE);
+ kfree(ewrk3_devs[i]);
+ ewrk3_devs[i] = NULL;
+ }
}
#endif /* MODULE */
MODULE_LICENSE("GPL");
--- linux-2.5.41/Documentation/networking/ewrk3.txt Mon Mar 18 15:37:08 2002
+++ linux-2.5.41-fix2/Documentation/networking/ewrk3.txt Wed Oct 9 21:44:24 2002
@@ -24,6 +24,7 @@
kernel with the ewrk3 configuration turned off and reboot.
5) insmod ewrk3.o
[Alan Cox: Changed this so you can insmod ewrk3.o irq=x io=y]
+ [Adam Kropelin: Multiple cards now supported by irq=x1,x2 io=y1,y2]
6) run the net startup bits for your new eth?? interface manually
(usually /etc/rc.inet[12] at boot time).
7) enjoy!
-
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