openwrt/target/linux/brcm-2.4/patches/009-wrt54g3g_pcmcia.patch

diff -urN linux.old/arch/mips/bcm947xx/pcibios.c linux.dev/arch/mips/bcm947xx/pcibios.c
--- linux.old/arch/mips/bcm947xx/pcibios.c	2006-04-07 21:20:59.000000000 +0200
+++ linux.dev/arch/mips/bcm947xx/pcibios.c	2006-04-08 03:17:59.000000000 +0200
@@ -157,6 +157,7 @@
 
 static u32 pci_iobase = 0x100;
 static u32 pci_membase = SB_PCI_DMA;
+static u32 pcmcia_membase = 0x40004000;
 
 void __init
 pcibios_fixup_bus(struct pci_bus *b)
@@ -188,7 +189,7 @@
 			/* Fix up resource bases */
 			for (pos = 0; pos < 6; pos++) {
 				res = &d->resource[pos];
-				base = (res->flags & IORESOURCE_IO) ? &pci_iobase : &pci_membase;
+				base = (res->flags & IORESOURCE_IO) ? &pci_iobase : ((b->number == 2) ? &pcmcia_membase : &pci_membase);
 				if (res->end) {
 					size = res->end - res->start + 1;
  					if (*base & (size - 1))
@@ -308,7 +309,12 @@
 	where = PCI_BASE_ADDRESS_0 + (resource * 4);
 	size = res->end - res->start;
 	pci_read_config_dword(dev, where, &reg);
-	reg = (reg & size) | (((u32)(res->start - root->start)) & ~size);
+	
+	if (dev->bus->number == 1)
+		reg = (reg & size) | (((u32)(res->start - root->start)) & ~size);
+	else
+		reg = res->start;
+
 	pci_write_config_dword(dev, where, reg);
 }
 
diff -urN linux.old/drivers/pcmcia/yenta.c linux.dev/drivers/pcmcia/yenta.c
--- linux.old/drivers/pcmcia/yenta.c	2004-11-17 12:54:21.000000000 +0100
+++ linux.dev/drivers/pcmcia/yenta.c	2006-04-11 17:47:45.000000000 +0200
@@ -543,6 +543,9 @@
 	 * Probe for usable interrupts using the force
 	 * register to generate bogus card status events.
 	 */
+
+#ifndef CONFIG_BCM947XX
+	/* WRT54G3G does not like this */
 	cb_writel(socket, CB_SOCKET_EVENT, -1);
 	cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
 	exca_writeb(socket, I365_CSCINT, 0);
@@ -557,7 +560,8 @@
 	}
 	cb_writel(socket, CB_SOCKET_MASK, 0);
 	exca_writeb(socket, I365_CSCINT, 0);
-	
+#endif
+
 	mask = probe_irq_mask(val) & 0xffff;
 
 	bridge_ctrl &= ~CB_BRIDGE_INTR;
@@ -578,6 +582,12 @@
 	socket->cap.cb_dev = socket->dev;
 	socket->cap.bus = NULL;
 
+#ifdef CONFIG_BCM947XX
+	/* irq mask probing is broken for the WRT54G3G */
+	if (socket->cap.irq_mask == 0)
+		socket->cap.irq_mask = 0x6f8;
+#endif
+
 	printk(KERN_INFO "Yenta ISA IRQ mask 0x%04x, PCI irq %d\n",
 	       socket->cap.irq_mask, socket->cb_irq);
 }
@@ -609,6 +619,15 @@
 	printk(KERN_INFO "Socket status: %08x\n",
 	       cb_readl(socket, CB_SOCKET_STATE));
 
+	/* Generate an interrupt on card insert/remove */
+	config_writew(socket, CB_SOCKET_MASK, CB_CSTSMASK | CB_CDMASK);
+
+	/* Set up Multifunction Routing Status Register */
+	config_writew(socket, 0x8C, 0x1000 /* MFUNC3 to GPIO3 */ | 0x2 /* MFUNC0 to INTA */);
+	
+	/* Switch interrupts to parallelized */
+	config_writeb(socket, 0x92, 0x64);
+	
 	/* Register it with the pcmcia layer.. */
 	cardbus_register(socket);
 
@@ -731,7 +750,7 @@
 {
 	struct pci_bus *bus;
 	struct resource *root, *res;
-	u32 start, end;
+	u32 start = 0, end = 0;
 	u32 align, size, min, max;
 	unsigned offset;
 	unsigned mask;
@@ -750,6 +769,15 @@
 	res->end = 0;
 	root = pci_find_parent_resource(socket->dev, res);
 
+#ifdef CONFIG_BCM947XX
+	/* default mem resources are completely fscked up on the wrt54g3g */
+	/* bypass the entire resource allocation stuff below and just set it statically */
+	if (type & IORESOURCE_MEM) {
+		res->start = 0x40004000;
+		res->end = res->start + 0x3fff;
+	}
+
+#else
 	if (!root)
 		return;
 
@@ -794,6 +822,7 @@
 		res->start = res->end = 0;
 		return;
 	}
+#endif
 
 	config_writel(socket, offset, res->start);
 	config_writel(socket, offset+4, res->end);