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SubjectRe: [PATCH] NE PnP Update from Jeff Muizelaar (5/6)

Paul Gortmaker wrote:

>I've a couple of quick comments after looking over the patch:
>
>
>
>>-"Last modified Nov 1, 2000 by Paul Gortmaker\n";
>>+"Last modified January 20, 2003 by Jeff Muizelaar\n";
>>
>>
>
>Feel free to delete this "Last modified" stuff altogether.
>It is just extra verbage at boot we don't need. (Blame
>Jeff Garzik -- he put it there, not me... ;-)
>
It's gone with the attached patch. I also changed the version string a
bit. I figure enough of the driver has changed in the last 9 years to
warrant a small increment.

>
>
>>+ free_irq(dev->irq, dev);
>>+ release_region(dev->base_addr, NE_IO_EXTENT);
>>+ unregister_netdev(dev);
>>+ kfree(dev->priv);
>>+ kfree(dev);
>>
>>
>
>It is usually good practice to unregister a device as the
>first thing, and then release its associated resources once
>you know the kernel doesn't hold any references to it.
>
>
Agreed. I also fixed the legacy cleanup code to do things this way, and
removed some old pnp code I had forgotten about.
It would probably be good to unify both sets of init/cleanup code but I
want to keep the changes small for now.

Adam have you made any progress on supporting non-PnP legacy devices yet?

-Jeff
--- linux-2.5.59/drivers/net/ne.c 2003-01-26 14:16:31.000000000 -0500
+++ linux-2.5.59-patched/drivers/net/ne.c 2003-01-26 14:17:58.000000000 -0500
@@ -29,21 +29,20 @@
last in cleanup_modue()
Richard Guenther : Added support for ISAPnP cards
Paul Gortmaker : Discontinued PCI support - use ne2k-pci.c instead.
+ Jeff Muizelaar : moved over to generic PnP api

*/

/* Routines for the NatSemi-based designs (NE[12]000). */

-static const char version1[] =
-"ne.c:v1.10 9/23/94 Donald Becker (becker@scyld.com)\n";
-static const char version2[] =
-"Last modified Nov 1, 2000 by Paul Gortmaker\n";
+static const char version[] =
+"ne.c:v1.10a 1/26/03 Donald Becker (becker@scyld.com)\n";


#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
-#include <linux/isapnp.h>
+#include <linux/pnp.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
@@ -76,20 +75,18 @@
};
#endif

-static struct isapnp_device_id isapnp_clone_list[] __initdata = {
- { ISAPNP_CARD_ID('A','X','E',0x2011),
- ISAPNP_VENDOR('A','X','E'), ISAPNP_FUNCTION(0x2011),
- (long) "NetGear EA201" },
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
- ISAPNP_VENDOR('E','D','I'), ISAPNP_FUNCTION(0x0216),
- (long) "NN NE2000" },
- { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
- ISAPNP_VENDOR('P','N','P'), ISAPNP_FUNCTION(0x80d6),
- (long) "Generic PNP" },
- { } /* terminate list */
+#ifdef CONFIG_PNP
+static const struct pnp_device_id ne_pnp_table[] = {
+ /* NetGear EA201 */
+ {.id = "AXE2011", .driver_data = 0},
+ /* NN NE2000 */
+ {.id = "EDI0216", .driver_data = 0},
+ /* NE2000 Compatible */
+ {.id = "PNP80d6", .driver_data = 0},
};

-MODULE_DEVICE_TABLE(isapnp, isapnp_clone_list);
+MODULE_DEVICE_TABLE(pnp, ne_pnp_table);
+#endif

#ifdef SUPPORT_NE_BAD_CLONES
/* A list of bad clones that we none-the-less recognize. */
@@ -126,9 +123,20 @@
#define NESM_START_PG 0x40 /* First page of TX buffer */
#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */

+#ifdef CONFIG_PNP
+static int ne_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id);
+static void ne_pnp_remove(struct pnp_dev *dev);
+
+static struct pnp_driver ne_pnp_driver = {
+ .name = "ne",
+ .id_table = ne_pnp_table,
+ .probe = ne_pnp_probe,
+ .remove = ne_pnp_remove,
+};
+#endif
+
int ne_probe(struct net_device *dev);
static int ne_probe1(struct net_device *dev, int ioaddr);
-static int ne_probe_isapnp(struct net_device *dev);

static int ne_open(struct net_device *dev);
static int ne_close(struct net_device *dev);
@@ -175,10 +183,6 @@
else if (base_addr != 0) /* Don't probe at all. */
return -ENXIO;

- /* Then look for any installed ISAPnP clones */
- if (isapnp_present() && (ne_probe_isapnp(dev) == 0))
- return 0;
-
#ifndef MODULE
/* Last resort. The semi-risky ISA auto-probe. */
for (base_addr = 0; netcard_portlist[base_addr] != 0; base_addr++) {
@@ -191,50 +195,58 @@
return -ENODEV;
}

-static int __init ne_probe_isapnp(struct net_device *dev)
+#ifdef CONFIG_PNP
+static int ne_pnp_probe(struct pnp_dev *idev, const struct pnp_device_id *dev_id)
{
- int i;
-
- for (i = 0; isapnp_clone_list[i].vendor != 0; i++) {
- struct pnp_dev *idev = NULL;
+ struct net_device *dev;
+ int err;
+
+ if ( !(dev = alloc_etherdev(0)) ){
+ err = -ENOMEM;
+ goto alloc_fail;
+ }
+
+ dev->base_addr = pnp_port_start(idev, 0);
+ dev->irq = pnp_irq(idev, 0);
+ printk(KERN_INFO "ne.c: PnP reports %s at i/o %#lx, irq %d\n",
+ idev->name, dev->base_addr, dev->irq);
+
+ SET_MODULE_OWNER(dev);
+
+ if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
+ printk(KERN_ERR "ne.c: Probe of PnP card at %#lx failed\n", dev->base_addr);
+ err = -ENXIO;
+ goto probe_fail;
+ }
+
+ if ( (err = register_netdev(dev)) != 0)
+ goto register_fail;

- while ((idev = pnp_find_dev(NULL,
- isapnp_clone_list[i].vendor,
- isapnp_clone_list[i].function,
- idev))) {
- /* Avoid already found cards from previous calls */
- if (pnp_device_attach(idev) < 0)
- continue;
- if (pnp_activate_dev(idev, NULL) < 0) {
- pnp_device_detach(idev);
- continue;
- }
- /* if no io and irq, search for next */
- if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0)) {
- pnp_device_detach(idev);
- continue;
- }
- /* found it */
- dev->base_addr = pnp_port_start(idev, 0);
- dev->irq = pnp_irq(idev, 0);
- printk(KERN_INFO "ne.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
- (char *) isapnp_clone_list[i].driver_data,
- dev->base_addr, dev->irq);
- if (ne_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
- printk(KERN_ERR "ne.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
- pnp_device_detach(idev);
- return -ENXIO;
- }
- ei_status.priv = (unsigned long)idev;
- break;
- }
- if (!idev)
- continue;
- return 0;
+ pnp_set_drvdata(idev, dev);
+
+ return 0;
+
+register_fail:
+ kfree(dev->priv);
+ release_region(dev->base_addr, NE_IO_EXTENT);
+probe_fail:
+ kfree(dev);
+alloc_fail:
+ return err;
+}
+
+static void ne_pnp_remove(struct pnp_dev *idev)
+{
+ struct net_device *dev = pnp_get_drvdata(idev);
+ if (dev) {
+ unregister_netdev(dev);
+ free_irq(dev->irq, dev);
+ release_region(dev->base_addr, NE_IO_EXTENT);
+ kfree(dev->priv);
+ kfree(dev);
}
-
- return -ENODEV;
}
+#endif

static int __init ne_probe1(struct net_device *dev, int ioaddr)
{
@@ -273,7 +285,7 @@
}

if (ei_debug && version_printed++ == 0)
- printk(KERN_INFO "%s" KERN_INFO "%s", version1, version2);
+ printk(KERN_INFO "%s", version);

printk(KERN_INFO "NE*000 ethercard probe at %#3x:", ioaddr);

@@ -757,6 +769,13 @@
{
int this_dev, found = 0;

+#ifdef CONFIG_PNP
+ found = pnp_register_driver(&ne_pnp_driver);
+ if (found < 0) {
+ return found;
+ }
+#endif
+
for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
struct net_device *dev = &dev_ne[this_dev];
dev->irq = irq[this_dev];
@@ -774,6 +793,9 @@
printk(KERN_WARNING "ne.c: No NE*000 card found at i/o = %#x\n", io[this_dev]);
else
printk(KERN_NOTICE "ne.c: You must supply \"io=0xNNN\" value(s) for ISA cards.\n");
+#ifdef CONFIG_PNP
+ pnp_unregister_driver(&ne_pnp_driver);
+#endif
return -ENXIO;
}
return 0;
@@ -783,17 +805,16 @@
{
int this_dev;

+#ifdef CONFIG_PNP
+ pnp_unregister_driver(&ne_pnp_driver);
+#endif
for (this_dev = 0; this_dev < MAX_NE_CARDS; this_dev++) {
struct net_device *dev = &dev_ne[this_dev];
if (dev->priv != NULL) {
- void *priv = dev->priv;
- struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
- if (idev)
- pnp_device_detach(idev);
+ unregister_netdev(dev);
free_irq(dev->irq, dev);
release_region(dev->base_addr, NE_IO_EXTENT);
- unregister_netdev(dev);
- kfree(priv);
+ kfree(dev->priv);
}
}
}
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