patch-2.3.38 linux/drivers/pnp/quirks.c

• Lines: 76
• Date: Thu Jan 6 14:47:29 2000
• Orig file: v2.3.37/linux/drivers/pnp/quirks.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.37/linux/drivers/pnp/quirks.c linux/drivers/pnp/quirks.c
@@ -0,0 +1,75 @@
+/*
+ *  This file contains quirk handling code for ISAPnP devices
+ *  Some devices do not report all their resources, and need to have extra
+ *  resources added. This is most easily accomplished at initialisation time
+ *  when building up the resource structure for the first time.
+ *
+ *  Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk>
+ *
+ *  Heavily based on PCI quirks handling which is
+ *
+ *  Copyright (c) 1999 Martin Mares <mj@suse.cz>
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/isapnp.h>
+
+static void __init quirk_awe32_resources(struct pci_dev *dev)
+{
+	struct isapnp_port *port, *port2, *port3;
+	struct isapnp_resources *res = dev->sysdata;
+
+	/*
+	 * Unfortunately the isapnp_add_port_resource is too tightly bound
+	 * into the PnP discovery sequence, and cannot be used. Link in the
+	 * two extra ports (at offset 0x400 and 0x800 from the one given) by
+	 * hand.
+	 */
+	for ( ; res ; res = res->alt ) {
+		port2 = isapnp_alloc(sizeof(struct isapnp_port));
+		port3 = isapnp_alloc(sizeof(struct isapnp_port));
+		if (!port2 || !port3)
+			return;
+		port = res->port;
+		memcpy(port2, port, sizeof(struct isapnp_port));
+		memcpy(port3, port, sizeof(struct isapnp_port));
+		port->next = port2;
+		port2->next = port3;
+		port2->min += 0x400;
+		port2->max += 0x400;
+		port3->min += 0x800;
+		port3->max += 0x800;
+	}
+	printk(KERN_INFO "ISAPnP: AWE32 quirk - adding two ports\n");
+}
+
+
+/*
+ *  ISAPnP Quirks
+ *  Cards or devices that need some tweaking due to broken hardware
+ */
+
+static struct isapnp_fixup isapnp_fixups[] __initdata = {
+	{ ISAPNP_VENDOR('C','T','L'), ISAPNP_DEVICE(0x0021),
+		quirk_awe32_resources },
+	{ 0 }
+};
+
+void isapnp_fixup_device(struct pci_dev *dev)
+{
+	int i = 0;
+
+	while (isapnp_fixups[i].vendor != 0) {
+		if ((isapnp_fixups[i].vendor == dev->vendor) &&
+		    (isapnp_fixups[i].device == dev->device)) {
+			printk(KERN_DEBUG "PnP: Calling quirk for %s\n",
+			       dev->slot_name);
+			isapnp_fixups[i].quirk_function(dev);
+		}
+		i++;
+	}
+}
+