From 939ceadf76a8303ada4994757268a8bf6b163f2a Mon Sep 17 00:00:00 2001 From: =?utf8?q?Michael=20B=C3=BCsch?= Date: Sat, 16 Feb 2008 17:09:50 +0000 Subject: [PATCH] Fix support for PCI devices behind a SSB->PCI bridge. SVN-Revision: 10468 --- .../400-b43-pci_ssb_bridge.patch | 111 ------------------ .../600-ssb-fix-pcidevices.patch | 65 ++++++++++ .../601-mips-remove-pci-collision-check.patch | 21 ++++ 3 files changed, 86 insertions(+), 111 deletions(-) delete mode 100644 target/linux/brcm47xx/patches-2.6.23/400-b43-pci_ssb_bridge.patch create mode 100644 target/linux/brcm47xx/patches-2.6.23/600-ssb-fix-pcidevices.patch create mode 100644 target/linux/brcm47xx/patches-2.6.23/601-mips-remove-pci-collision-check.patch 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 6a7eabed284..00000000000 --- 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 -- * -- * Licensed under the GNU/GPL. See COPYING for details. -- */ -- --#include --#include -- --#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 00000000000..01bd9ffea21 --- /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 00000000000..8ab28a75e28 --- /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) -- 2.30.2