Fix support for PCI devices behind a SSB->PCI bridge.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10468 3c298f89-4303-0410-b956-a3cf2f4a3e73

3 files changed, 86 insertions, 111 deletions

diff --git a/target/linux/brcm47xx/patches-2.6.23/400-b43-pci_ssb_bridge.patch b/target/linux/brcm47xx/patches-2.6.23/400-b43-pci_ssb_bridge.patch
deleted file mode 100644
index 6a7eabed28..0000000000
--- a/target/linux/brcm47xx/patches-2.6.23/400-b43-pci_ssb_bridge.patch
+++ /dev/null
@@ -1,111 +0,0 @@
-diff -Naur linux-2.6.23.1.orig/drivers/ssb/b43_pci_bridge.c linux-2.6.23.1/drivers/ssb/b43_pci_bridge.c
---- linux-2.6.23.1.orig/drivers/ssb/b43_pci_bridge.c	2007-11-09 16:48:55.000000000 +0100
-+++ linux-2.6.23.1/drivers/ssb/b43_pci_bridge.c	1970-01-01 01:00:00.000000000 +0100
-@@ -1,48 +0,0 @@
--/*
-- * Broadcom 43xx PCI-SSB bridge module
-- *
-- * This technically is a seperate PCI driver module, but
-- * because of its small size we include it in the SSB core
-- * instead of creating a standalone module.
-- *
-- * Copyright 2007  Michael Buesch <mb@bu3sch.de>
-- *
-- * Licensed under the GNU/GPL. See COPYING for details.
-- */
--
--#include <linux/pci.h>
--#include <linux/ssb/ssb.h>
--
--#include "ssb_private.h"
--
--
--static const struct pci_device_id b43_pci_bridge_tbl[] = {
--	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4301) },
--	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4307) },
--	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4311) },
--	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4312) },
--	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4318) },
--	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4319) },
--	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4320) },
--	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4321) },
--	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4324) },
--	{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4325) },
--	{ 0, },
--};
--MODULE_DEVICE_TABLE(pci, b43_pci_bridge_tbl);
--
--static struct pci_driver b43_pci_bridge_driver = {
--	.name = "b43-pci-bridge",
--	.id_table = b43_pci_bridge_tbl,
--};
--
--
--int __init b43_pci_ssb_bridge_init(void)
--{
--	return ssb_pcihost_register(&b43_pci_bridge_driver);
--}
--
--void __exit b43_pci_ssb_bridge_exit(void)
--{
--	ssb_pcihost_unregister(&b43_pci_bridge_driver);
--}
-diff -Naur linux-2.6.23.1.orig/drivers/ssb/main.c linux-2.6.23.1/drivers/ssb/main.c
---- linux-2.6.23.1.orig/drivers/ssb/main.c	2007-11-09 16:48:55.000000000 +0100
-+++ linux-2.6.23.1/drivers/ssb/main.c	2007-11-09 22:11:32.000000000 +0100
-@@ -1142,21 +1142,12 @@
- 	if (err)
- 		bus_unregister(&ssb_bustype);
- 
--	err = b43_pci_ssb_bridge_init();
--	if (err) {
--		ssb_printk(KERN_ERR "Broadcom 43xx PCI-SSB-bridge "
--			   "initialization failed");
--		/* don't fail SSB init because of this */
--		err = 0;
--	}
--
- 	return err;
- }
- subsys_initcall(ssb_modinit);
- 
- static void __exit ssb_modexit(void)
- {
--	b43_pci_ssb_bridge_exit();
- 	bus_unregister(&ssb_bustype);
- }
- module_exit(ssb_modexit)
-diff -Naur linux-2.6.23.1.orig/drivers/ssb/Makefile linux-2.6.23.1/drivers/ssb/Makefile
---- linux-2.6.23.1.orig/drivers/ssb/Makefile	2007-11-09 16:48:55.000000000 +0100
-+++ linux-2.6.23.1/drivers/ssb/Makefile	2007-11-09 22:30:32.000000000 +0100
-@@ -11,8 +11,4 @@
- ssb-$(CONFIG_SSB_DRIVER_EXTIF)		+= driver_extif.o
- ssb-$(CONFIG_SSB_DRIVER_PCICORE)	+= driver_pcicore.o
- 
--# b43 pci-ssb-bridge driver
--# Not strictly a part of SSB, but kept here for convenience
--ssb-$(CONFIG_SSB_PCIHOST)		+= b43_pci_bridge.o
--
- obj-$(CONFIG_SSB)			+= ssb.o
-diff -Naur linux-2.6.23.1.orig/drivers/ssb/ssb_private.h linux-2.6.23.1/drivers/ssb/ssb_private.h
---- linux-2.6.23.1.orig/drivers/ssb/ssb_private.h	2007-11-09 16:48:55.000000000 +0100
-+++ linux-2.6.23.1/drivers/ssb/ssb_private.h	2007-11-09 22:11:11.000000000 +0100
-@@ -119,18 +119,4 @@
- extern int ssb_devices_thaw(struct ssb_bus *bus);
- extern struct ssb_bus *ssb_pci_dev_to_bus(struct pci_dev *pdev);
- 
--/* b43_pci_bridge.c */
--#ifdef CONFIG_SSB_PCIHOST
--extern int __init b43_pci_ssb_bridge_init(void);
--extern void __exit b43_pci_ssb_bridge_exit(void);
--#else /* CONFIG_SSB_PCIHOST */
--static inline int b43_pci_ssb_bridge_init(void)
--{
--	return 0;
--}
--static inline void b43_pci_ssb_bridge_exit(void)
--{
--}
--#endif /* CONFIG_SSB_PCIHOST */
--
- #endif /* LINUX_SSB_PRIVATE_H_ */
diff --git a/target/linux/brcm47xx/patches-2.6.23/600-ssb-fix-pcidevices.patch b/target/linux/brcm47xx/patches-2.6.23/600-ssb-fix-pcidevices.patch
new file mode 100644
index 0000000000..01bd9ffea2
--- /dev/null
+++ b/target/linux/brcm47xx/patches-2.6.23/600-ssb-fix-pcidevices.patch
@@ -0,0 +1,65 @@
+Index: linux-2.6.23.16/drivers/ssb/driver_pcicore.c
+===================================================================
+--- linux-2.6.23.16.orig/drivers/ssb/driver_pcicore.c	2008-02-16 17:55:20.000000000 +0100
++++ linux-2.6.23.16/drivers/ssb/driver_pcicore.c	2008-02-16 17:55:35.000000000 +0100
+@@ -66,6 +66,7 @@ int pcibios_plat_dev_init(struct pci_dev
+ 			base = &ssb_pcicore_pcibus_iobase;
+ 		else
+ 			base = &ssb_pcicore_pcibus_membase;
++		res->flags |= IORESOURCE_PCI_FIXED;
+ 		if (res->end) {
+ 			size = res->end - res->start + 1;
+ 			if (*base & (size - 1))
+@@ -88,10 +89,12 @@ int pcibios_plat_dev_init(struct pci_dev
+ 
+ static void __init ssb_fixup_pcibridge(struct pci_dev *dev)
+ {
++	u8 lat;
++
+ 	if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) != 0)
+ 		return;
+ 
+-	ssb_printk(KERN_INFO "PCI: fixing up bridge\n");
++	ssb_printk(KERN_INFO "PCI: Fixing up bridge %s\n", pci_name(dev));
+ 
+ 	/* Enable PCI bridge bus mastering and memory space */
+ 	pci_set_master(dev);
+@@ -101,7 +104,10 @@ static void __init ssb_fixup_pcibridge(s
+ 	pci_write_config_dword(dev, SSB_BAR1_CONTROL, 3);
+ 
+ 	/* Make sure our latency is high enough to handle the devices behind us */
+-	pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xa8);
++	lat = 168;
++	ssb_printk(KERN_INFO "PCI: Fixing latency timer of device %s to %u\n",
++		   pci_name(dev), lat);
++	pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat);
+ }
+ DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, ssb_fixup_pcibridge);
+ 
+@@ -279,14 +285,14 @@ static struct resource ssb_pcicore_mem_r
+ 	.name	= "SSB PCIcore external memory",
+ 	.start	= SSB_PCI_DMA,
+ 	.end	= SSB_PCI_DMA + SSB_PCI_DMA_SZ - 1,
+-	.flags	= IORESOURCE_MEM,
++	.flags	= IORESOURCE_MEM | IORESOURCE_PCI_FIXED,
+ };
+ 
+ static struct resource ssb_pcicore_io_resource = {
+ 	.name	= "SSB PCIcore external I/O",
+ 	.start	= 0x100,
+ 	.end	= 0x7FF,
+-	.flags	= IORESOURCE_IO,
++	.flags	= IORESOURCE_IO | IORESOURCE_PCI_FIXED,
+ };
+ 
+ static struct pci_controller ssb_pcicore_controller = {
+@@ -344,7 +350,8 @@ static void ssb_pcicore_init_hostmode(st
+ 	/* Ok, ready to run, register it to the system.
+ 	 * The following needs change, if we want to port hostmode
+ 	 * to non-MIPS platform. */
+-	set_io_port_base((unsigned long)ioremap_nocache(SSB_PCI_MEM, 0x04000000));
++	ssb_pcicore_controller.io_map_base = (unsigned long)ioremap_nocache(SSB_PCI_MEM, 0x04000000);
++	set_io_port_base(ssb_pcicore_controller.io_map_base);
+ 	/* Give some time to the PCI controller to configure itself with the new
+ 	 * values. Not waiting at this point causes crashes of the machine. */
+ 	mdelay(10);
diff --git a/target/linux/brcm47xx/patches-2.6.23/601-mips-remove-pci-collision-check.patch b/target/linux/brcm47xx/patches-2.6.23/601-mips-remove-pci-collision-check.patch
new file mode 100644
index 0000000000..8ab28a75e2
--- /dev/null
+++ b/target/linux/brcm47xx/patches-2.6.23/601-mips-remove-pci-collision-check.patch
@@ -0,0 +1,21 @@
+The SSB pcicore driver does create some MMIO resource collisions.
+However, the pcicore PCI-fixup routine fixes these collisions afterwards.
+Remove this sanity check for now until we find a better solution.
+--mb
+Index: linux-2.6.23.16/arch/mips/pci/pci.c
+===================================================================
+--- linux-2.6.23.16.orig/arch/mips/pci/pci.c	2008-02-16 17:55:20.000000000 +0100
++++ linux-2.6.23.16/arch/mips/pci/pci.c	2008-02-16 17:57:39.000000000 +0100
+@@ -177,10 +177,8 @@ static int pcibios_enable_resources(stru
+ 			continue;
+ 
+ 		r = &dev->resource[idx];
+-		if (!r->start && r->end) {
+-			printk(KERN_ERR "PCI: Device %s not available because of resource collisions\n", pci_name(dev));
+-			return -EINVAL;
+-		}
++		if (!r->start && r->end)
++			printk(KERN_WARNING "PCI: Device %s resource collisions detected. Ignoring...\n", pci_name(dev));
+ 		if (r->flags & IORESOURCE_IO)
+ 			cmd |= PCI_COMMAND_IO;
+ 		if (r->flags & IORESOURCE_MEM)