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Commit 8ea6091f authored by John Keller's avatar John Keller Committed by Greg Kroah-Hartman
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Altix: Add initial ACPI IO support 



First phase in introducing ACPI support to SN.
In this phase, when running with an ACPI capable PROM,
the DSDT will define the root busses and all SN nodes
(SGIHUB, SGITIO). An ACPI bus driver will be registered
for the node devices, with the acpi_pci_root_driver being
used for the root busses. An ACPI vendor descriptor is
now used to pass platform specific information for both
nodes and busses, eliminating the need for the current
SAL calls. Also, with ACPI support, SN fixup code is no longer
needed to initiate the PCI bus scans, as the acpi_pci_root_driver
does that.

However, to maintain backward compatibility with non-ACPI capable
PROMs, none of the current 'fixup' code can been deleted, though
much restructuring has been done. For example, the bulk of the code
in io_common.c is relocated code that is now common regardless
of what PROM is running, while io_acpi_init.c and io_init.c contain
routines specific to an ACPI or non ACPI capable PROM respectively.

A new pci bus fixup platform vector has been created to provide
a hook for invoking platform specific bus fixup from pcibios_fixup_bus().

The size of io_space[] has been increased to support systems with
large IO configurations.


Signed-off-by: default avatarJohn Keller <jpk@sgi.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent e08cf02f

arch/ia64/pci/pci.c

+3 −1
Original line number Diff line number Diff line
@@ -469,10 +469,11 @@ pcibios_fixup_resources(struct pci_dev *dev, int start, int limit) 
	}

}



static void __devinit pcibios_fixup_device_resources(struct pci_dev *dev)

void __devinit pcibios_fixup_device_resources(struct pci_dev *dev)

{

	pcibios_fixup_resources(dev, 0, PCI_BRIDGE_RESOURCES);

}

EXPORT_SYMBOL_GPL(pcibios_fixup_device_resources);



static void __devinit pcibios_fixup_bridge_resources(struct pci_dev *dev)

{
@@ -493,6 +494,7 @@ pcibios_fixup_bus (struct pci_bus *b) 
	}

	list_for_each_entry(dev, &b->devices, bus_list)

		pcibios_fixup_device_resources(dev);

	platform_pci_fixup_bus(b);



	return;

}

arch/ia64/sn/kernel/Makefile

+3 −2
Original line number Diff line number Diff line
@@ -4,13 +4,14 @@ 
# License.  See the file "COPYING" in the main directory of this archive

# for more details.

#

# Copyright (C) 1999,2001-2005 Silicon Graphics, Inc.  All Rights Reserved.

# Copyright (C) 1999,2001-2006 Silicon Graphics, Inc.  All Rights Reserved.

#



CPPFLAGS += -I$(srctree)/arch/ia64/sn/include



obj-y				+= setup.o bte.o bte_error.o irq.o mca.o idle.o \

				   huberror.o io_init.o iomv.o klconflib.o pio_phys.o \

				   huberror.o io_acpi_init.o io_common.o \

				   io_init.o iomv.o klconflib.o pio_phys.o \

				   sn2/

obj-$(CONFIG_IA64_GENERIC)      += machvec.o

obj-$(CONFIG_SGI_TIOCX)		+= tiocx.o

arch/ia64/sn/kernel/io_acpi_init.c

0 → 100644
+198 −0
Original line number Diff line number Diff line 
/*

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 *

 * Copyright (C) 2006 Silicon Graphics, Inc. All rights reserved.

 */



#include <asm/sn/types.h>

#include <asm/sn/addrs.h>

#include <asm/sn/pcidev.h>

#include <asm/sn/pcibus_provider_defs.h>

#include <asm/sn/sn_sal.h>

#include "xtalk/hubdev.h"

#include <linux/acpi.h>





/*

 * The code in this file will only be executed when running with

 * a PROM that has ACPI IO support. (i.e., SN_ACPI_BASE_SUPPORT() == 1)

 */





/*

 * This value must match the UUID the PROM uses

 * (io/acpi/defblk.c) when building a vendor descriptor.

 */

struct acpi_vendor_uuid sn_uuid = {

	.subtype = 0,

	.data	= { 0x2c, 0xc6, 0xa6, 0xfe, 0x9c, 0x44, 0xda, 0x11,

		    0xa2, 0x7c, 0x08, 0x00, 0x69, 0x13, 0xea, 0x51 },

};



/*

 * Perform the early IO init in PROM.

 */

static s64

sal_ioif_init(u64 *result)

{

	struct ia64_sal_retval isrv = {0,0,0,0};



	SAL_CALL_NOLOCK(isrv,

			SN_SAL_IOIF_INIT, 0, 0, 0, 0, 0, 0, 0);

	*result = isrv.v0;

	return isrv.status;

}



/*

 * sn_hubdev_add - The 'add' function of the acpi_sn_hubdev_driver.

 *		   Called for every "SGIHUB" or "SGITIO" device defined

 *		   in the ACPI namespace.

 */

static int __init

sn_hubdev_add(struct acpi_device *device)

{

	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };

	u64 addr;

	struct hubdev_info *hubdev;

	struct hubdev_info *hubdev_ptr;

	int i;

	u64 nasid;

	struct acpi_resource *resource;

	int ret = 0;

	acpi_status status;

	struct acpi_resource_vendor_typed *vendor;

	extern void sn_common_hubdev_init(struct hubdev_info *);



	status = acpi_get_vendor_resource(device->handle, METHOD_NAME__CRS,

					  &sn_uuid, &buffer);

	if (ACPI_FAILURE(status)) {

		printk(KERN_ERR

		       "sn_hubdev_add: acpi_get_vendor_resource() failed: %d\n",

		        status);

		return 1;

	}



	resource = buffer.pointer;

	vendor = &resource->data.vendor_typed;

	if ((vendor->byte_length - sizeof(struct acpi_vendor_uuid)) !=

	    sizeof(struct hubdev_info *)) {

		printk(KERN_ERR

		       "sn_hubdev_add: Invalid vendor data length: %d\n",

		        vendor->byte_length);

		ret = 1;

		goto exit;

	}



	memcpy(&addr, vendor->byte_data, sizeof(struct hubdev_info *));

	hubdev_ptr = __va((struct hubdev_info *) addr);



	nasid = hubdev_ptr->hdi_nasid;

	i = nasid_to_cnodeid(nasid);

	hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);

	*hubdev = *hubdev_ptr;

	sn_common_hubdev_init(hubdev);



exit:

	kfree(buffer.pointer);

	return ret;

}



/*

 * sn_get_bussoft_ptr() - The pcibus_bussoft pointer is found in

 *			  the ACPI Vendor resource for this bus.

 */

static struct pcibus_bussoft *

sn_get_bussoft_ptr(struct pci_bus *bus)

{

	u64 addr;

	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };

	acpi_handle handle;

	struct pcibus_bussoft *prom_bussoft_ptr;

	struct acpi_resource *resource;

	acpi_status status;

	struct acpi_resource_vendor_typed *vendor;





	handle = PCI_CONTROLLER(bus)->acpi_handle;

	status = acpi_get_vendor_resource(handle, METHOD_NAME__CRS,

					  &sn_uuid, &buffer);

	if (ACPI_FAILURE(status)) {

		printk(KERN_ERR "get_acpi_pcibus_ptr: "

		       "get_acpi_bussoft_info() failed: %d\n",

		       status);

		return NULL;

	}

	resource = buffer.pointer;

	vendor = &resource->data.vendor_typed;



	if ((vendor->byte_length - sizeof(struct acpi_vendor_uuid)) !=

	     sizeof(struct pcibus_bussoft *)) {

		printk(KERN_ERR

		       "get_acpi_bussoft_ptr: Invalid vendor data "

		       "length %d\n", vendor->byte_length);

		kfree(buffer.pointer);

		return NULL;

	}

	memcpy(&addr, vendor->byte_data, sizeof(struct pcibus_bussoft *));

	prom_bussoft_ptr = __va((struct pcibus_bussoft *) addr);

	kfree(buffer.pointer);



	return prom_bussoft_ptr;

}



/*

 * sn_acpi_bus_fixup

 */

void

sn_acpi_bus_fixup(struct pci_bus *bus)

{

	struct pci_dev *pci_dev = NULL;

	struct pcibus_bussoft *prom_bussoft_ptr;

	extern void sn_common_bus_fixup(struct pci_bus *,

					struct pcibus_bussoft *);



	if (!bus->parent) {	/* If root bus */

		prom_bussoft_ptr = sn_get_bussoft_ptr(bus);

		if (prom_bussoft_ptr == NULL) {

			printk(KERN_ERR

			       "sn_pci_fixup_bus: 0x%04x:0x%02x Unable to "

			       "obtain prom_bussoft_ptr\n",

			       pci_domain_nr(bus), bus->number);

			return;

		}

		sn_common_bus_fixup(bus, prom_bussoft_ptr);

	}

	list_for_each_entry(pci_dev, &bus->devices, bus_list) {

		sn_pci_fixup_slot(pci_dev);

	}

}



static struct acpi_driver acpi_sn_hubdev_driver = {

	.name = "SGI HUBDEV Driver",

	.ids = "SGIHUB,SGITIO",

	.ops = {

		.add = sn_hubdev_add,

		},

};





/*

 * sn_io_acpi_init - PROM has ACPI support for IO, defining at a minimum the

 *		     nodes and root buses in the DSDT. As a result, bus scanning

 *		     will be initiated by the Linux ACPI code.

 */



void __init

sn_io_acpi_init(void)

{

	u64 result;

	s64 status;



	acpi_bus_register_driver(&acpi_sn_hubdev_driver);

	status = sal_ioif_init(&result);

	if (status || result)

		panic("sal_ioif_init failed: [%lx] %s\n",

		      status, ia64_sal_strerror(status));

}

arch/ia64/sn/kernel/io_common.c

0 → 100644
+612 −0
Original line number Diff line number Diff line 
/*

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 *

 * Copyright (C) 2006 Silicon Graphics, Inc. All rights reserved.

 */



#include <linux/bootmem.h>

#include <asm/sn/types.h>

#include <asm/sn/addrs.h>

#include <asm/sn/sn_feature_sets.h>

#include <asm/sn/geo.h>

#include <asm/sn/io.h>

#include <asm/sn/l1.h>

#include <asm/sn/module.h>

#include <asm/sn/pcibr_provider.h>

#include <asm/sn/pcibus_provider_defs.h>

#include <asm/sn/pcidev.h>

#include <asm/sn/simulator.h>

#include <asm/sn/sn_sal.h>

#include <asm/sn/tioca_provider.h>

#include <asm/sn/tioce_provider.h>

#include "xtalk/hubdev.h"

#include "xtalk/xwidgetdev.h"

#include <linux/acpi.h>

#include <asm/sn/sn2/sn_hwperf.h>

#include <asm/sn/acpi.h>



extern void sn_init_cpei_timer(void);

extern void register_sn_procfs(void);

extern void sn_acpi_bus_fixup(struct pci_bus *);

extern void sn_bus_fixup(struct pci_bus *);

extern void sn_acpi_slot_fixup(struct pci_dev *, struct pcidev_info *);

extern void sn_more_slot_fixup(struct pci_dev *, struct pcidev_info *);

extern void sn_legacy_pci_window_fixup(struct pci_controller *, u64, u64);

extern void sn_io_acpi_init(void);

extern void sn_io_init(void);





static struct list_head sn_sysdata_list;



/* sysdata list struct */

struct sysdata_el {

	struct list_head entry;

	void *sysdata;

};



int sn_ioif_inited;		/* SN I/O infrastructure initialized? */



struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES];	/* indexed by asic type */



/*

 * Hooks and struct for unsupported pci providers

 */



static dma_addr_t

sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size, int type)

{

	return 0;

}



static void

sn_default_pci_unmap(struct pci_dev *pdev, dma_addr_t addr, int direction)

{

	return;

}



static void *

sn_default_pci_bus_fixup(struct pcibus_bussoft *soft, struct pci_controller *controller)

{

	return NULL;

}



static struct sn_pcibus_provider sn_pci_default_provider = {

	.dma_map = sn_default_pci_map,

	.dma_map_consistent = sn_default_pci_map,

	.dma_unmap = sn_default_pci_unmap,

	.bus_fixup = sn_default_pci_bus_fixup,

};



/*

 * Retrieve the DMA Flush List given nasid, widget, and device.

 * This list is needed to implement the WAR - Flush DMA data on PIO Reads.

 */

static inline u64

sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,

			     u64 address)

{

	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;

	ret_stuff.v0 = 0;



	SAL_CALL_NOLOCK(ret_stuff,

			(u64) SN_SAL_IOIF_GET_DEVICE_DMAFLUSH_LIST,

			(u64) nasid, (u64) widget_num,

			(u64) device_num, (u64) address, 0, 0, 0);

	return ret_stuff.status;

}



/*

 * Retrieve the pci device information given the bus and device|function number.

 */

static inline u64

sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,

		    u64 sn_irq_info)

{

	struct ia64_sal_retval ret_stuff;

	ret_stuff.status = 0;

	ret_stuff.v0 = 0;



	SAL_CALL_NOLOCK(ret_stuff,

			(u64) SN_SAL_IOIF_GET_PCIDEV_INFO,

			(u64) segment, (u64) bus_number, (u64) devfn,

			(u64) pci_dev,

			sn_irq_info, 0, 0);

	return ret_stuff.v0;

}



/*

 * sn_pcidev_info_get() - Retrieve the pcidev_info struct for the specified

 *			  device.

 */

inline struct pcidev_info *

sn_pcidev_info_get(struct pci_dev *dev)

{

	struct pcidev_info *pcidev;



	list_for_each_entry(pcidev,

			    &(SN_PLATFORM_DATA(dev)->pcidev_info), pdi_list) {

		if (pcidev->pdi_linux_pcidev == dev)

			return pcidev;

	}

	return NULL;

}



/* Older PROM flush WAR

 *

 * 01/16/06 -- This war will be in place until a new official PROM is released.

 * Additionally note that the struct sn_flush_device_war also has to be

 * removed from arch/ia64/sn/include/xtalk/hubdev.h

 */

static u8 war_implemented = 0;



static s64 sn_device_fixup_war(u64 nasid, u64 widget, int device,

			       struct sn_flush_device_common *common)

{

	struct sn_flush_device_war *war_list;

	struct sn_flush_device_war *dev_entry;

	struct ia64_sal_retval isrv = {0,0,0,0};



	if (!war_implemented) {

		printk(KERN_WARNING "PROM version < 4.50 -- implementing old "

		       "PROM flush WAR\n");

		war_implemented = 1;

	}



	war_list = kzalloc(DEV_PER_WIDGET * sizeof(*war_list), GFP_KERNEL);

	if (!war_list)

		BUG();



	SAL_CALL_NOLOCK(isrv, SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,

			nasid, widget, __pa(war_list), 0, 0, 0 ,0);

	if (isrv.status)

		panic("sn_device_fixup_war failed: %s\n",

		      ia64_sal_strerror(isrv.status));



	dev_entry = war_list + device;

	memcpy(common,dev_entry, sizeof(*common));

	kfree(war_list);



	return isrv.status;

}



/*

 * sn_common_hubdev_init() - This routine is called to initialize the HUB data

 *			     structure for each node in the system.

 */

void __init

sn_common_hubdev_init(struct hubdev_info *hubdev)

{



	struct sn_flush_device_kernel *sn_flush_device_kernel;

	struct sn_flush_device_kernel *dev_entry;

	s64 status;

	int widget, device, size;



	/* Attach the error interrupt handlers */

	if (hubdev->hdi_nasid & 1)	/* If TIO */

		ice_error_init(hubdev);

	else

		hub_error_init(hubdev);



	for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++)

		hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev;



	if (!hubdev->hdi_flush_nasid_list.widget_p)

		return;



	size = (HUB_WIDGET_ID_MAX + 1) *

		sizeof(struct sn_flush_device_kernel *);

	hubdev->hdi_flush_nasid_list.widget_p =

		kzalloc(size, GFP_KERNEL);

	if (!hubdev->hdi_flush_nasid_list.widget_p)

		BUG();



	for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {

		size = DEV_PER_WIDGET *

			sizeof(struct sn_flush_device_kernel);

		sn_flush_device_kernel = kzalloc(size, GFP_KERNEL);

		if (!sn_flush_device_kernel)

			BUG();



		dev_entry = sn_flush_device_kernel;

		for (device = 0; device < DEV_PER_WIDGET;

		     device++, dev_entry++) {

			size = sizeof(struct sn_flush_device_common);

			dev_entry->common = kzalloc(size, GFP_KERNEL);

			if (!dev_entry->common)

				BUG();

			if (sn_prom_feature_available(PRF_DEVICE_FLUSH_LIST))

				status = sal_get_device_dmaflush_list(

					     hubdev->hdi_nasid, widget, device,

					     (u64)(dev_entry->common));

			else

				status = sn_device_fixup_war(hubdev->hdi_nasid,

							     widget, device,

							     dev_entry->common);

			if (status != SALRET_OK)

				panic("SAL call failed: %s\n",

				      ia64_sal_strerror(status));



			spin_lock_init(&dev_entry->sfdl_flush_lock);

		}



		if (sn_flush_device_kernel)

			hubdev->hdi_flush_nasid_list.widget_p[widget] =

							 sn_flush_device_kernel;

	}

}



void sn_pci_unfixup_slot(struct pci_dev *dev)

{

	struct pci_dev *host_pci_dev = SN_PCIDEV_INFO(dev)->host_pci_dev;



	sn_irq_unfixup(dev);

	pci_dev_put(host_pci_dev);

	pci_dev_put(dev);

}



/*

 * sn_pci_fixup_slot() - This routine sets up a slot's resources consistent

 *			 with the Linux PCI abstraction layer. Resources

 *			 acquired from our PCI provider include PIO maps

 *			 to BAR space and interrupt objects.

 */

void sn_pci_fixup_slot(struct pci_dev *dev)

{

	int segment = pci_domain_nr(dev->bus);

	int status = 0;

	struct pcibus_bussoft *bs;

 	struct pci_bus *host_pci_bus;

 	struct pci_dev *host_pci_dev;

	struct pcidev_info *pcidev_info;

 	struct sn_irq_info *sn_irq_info;

 	unsigned int bus_no, devfn;



	pci_dev_get(dev); /* for the sysdata pointer */

	pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL);

	if (!pcidev_info)

		BUG();		/* Cannot afford to run out of memory */



	sn_irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL);

	if (!sn_irq_info)

		BUG();		/* Cannot afford to run out of memory */



	/* Call to retrieve pci device information needed by kernel. */

	status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,

				     dev->devfn,

				     (u64) __pa(pcidev_info),

				     (u64) __pa(sn_irq_info));

	if (status)

		BUG(); /* Cannot get platform pci device information */



	/* Add pcidev_info to list in pci_controller.platform_data */

	list_add_tail(&pcidev_info->pdi_list,

		      &(SN_PLATFORM_DATA(dev->bus)->pcidev_info));



	if (!SN_ACPI_BASE_SUPPORT())

		sn_more_slot_fixup(dev, pcidev_info);



	/*

	 * Using the PROMs values for the PCI host bus, get the Linux

 	 * PCI host_pci_dev struct and set up host bus linkages

 	 */



	bus_no = (pcidev_info->pdi_slot_host_handle >> 32) & 0xff;

	devfn = pcidev_info->pdi_slot_host_handle & 0xffffffff;

 	host_pci_bus = pci_find_bus(segment, bus_no);

 	host_pci_dev = pci_get_slot(host_pci_bus, devfn);



	pcidev_info->host_pci_dev = host_pci_dev;

	pcidev_info->pdi_linux_pcidev = dev;

	pcidev_info->pdi_host_pcidev_info = SN_PCIDEV_INFO(host_pci_dev);

	bs = SN_PCIBUS_BUSSOFT(dev->bus);

	pcidev_info->pdi_pcibus_info = bs;



	if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {

		SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type];

	} else {

		SN_PCIDEV_BUSPROVIDER(dev) = &sn_pci_default_provider;

	}



	/* Only set up IRQ stuff if this device has a host bus context */

	if (bs && sn_irq_info->irq_irq) {

		pcidev_info->pdi_sn_irq_info = sn_irq_info;

		dev->irq = pcidev_info->pdi_sn_irq_info->irq_irq;

		sn_irq_fixup(dev, sn_irq_info);

	} else {

		pcidev_info->pdi_sn_irq_info = NULL;

		kfree(sn_irq_info);

	}

}



/*

 * sn_common_bus_fixup - Perform platform specific bus fixup.

 *			 Execute the ASIC specific fixup routine

 *			 for this bus.

 */

void

sn_common_bus_fixup(struct pci_bus *bus,

		    struct pcibus_bussoft *prom_bussoft_ptr)

{

	int cnode;

	struct pci_controller *controller;

	struct hubdev_info *hubdev_info;

	int nasid;

	void *provider_soft;

	struct sn_pcibus_provider *provider;

	struct sn_platform_data *sn_platform_data;



	controller = PCI_CONTROLLER(bus);

	/*

	 * Per-provider fixup.  Copies the bus soft structure from prom

	 * to local area and links SN_PCIBUS_BUSSOFT().

	 */



	if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES) {

		printk(KERN_WARNING "sn_common_bus_fixup: Unsupported asic type, %d",

		       prom_bussoft_ptr->bs_asic_type);

		return;

	}



	if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB)

		return;	/* no further fixup necessary */



	provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];

	if (provider == NULL)

		panic("sn_common_bus_fixup: No provider registered for this asic type, %d",

		      prom_bussoft_ptr->bs_asic_type);



	if (provider->bus_fixup)

		provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr,

				 controller);

	else

		provider_soft = NULL;



	/*

	 * Generic bus fixup goes here.  Don't reference prom_bussoft_ptr

	 * after this point.

	 */

	controller->platform_data = kzalloc(sizeof(struct sn_platform_data),

					    GFP_KERNEL);

	if (controller->platform_data == NULL)

		BUG();

	sn_platform_data =

			(struct sn_platform_data *) controller->platform_data;

	sn_platform_data->provider_soft = provider_soft;

	INIT_LIST_HEAD(&((struct sn_platform_data *)

			 controller->platform_data)->pcidev_info);

	nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);

	cnode = nasid_to_cnodeid(nasid);

	hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);

	SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =

	    &(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);



	/*

	 * If the node information we obtained during the fixup phase is

	 * invalid then set controller->node to -1 (undetermined)

	 */

	if (controller->node >= num_online_nodes()) {

		struct pcibus_bussoft *b = SN_PCIBUS_BUSSOFT(bus);



		printk(KERN_WARNING "Device ASIC=%u XID=%u PBUSNUM=%u"

		       "L_IO=%lx L_MEM=%lx BASE=%lx\n",

		       b->bs_asic_type, b->bs_xid, b->bs_persist_busnum,

		       b->bs_legacy_io, b->bs_legacy_mem, b->bs_base);

		printk(KERN_WARNING "on node %d but only %d nodes online."

		       "Association set to undetermined.\n",

		       controller->node, num_online_nodes());

		controller->node = -1;

	}

}



void sn_bus_store_sysdata(struct pci_dev *dev)

{

	struct sysdata_el *element;



	element = kzalloc(sizeof(struct sysdata_el), GFP_KERNEL);

	if (!element) {

		dev_dbg(dev, "%s: out of memory!\n", __FUNCTION__);

		return;

	}

	element->sysdata = SN_PCIDEV_INFO(dev);

	list_add(&element->entry, &sn_sysdata_list);

}



void sn_bus_free_sysdata(void)

{

	struct sysdata_el *element;

	struct list_head *list, *safe;



	list_for_each_safe(list, safe, &sn_sysdata_list) {

		element = list_entry(list, struct sysdata_el, entry);

		list_del(&element->entry);

		list_del(&(((struct pcidev_info *)

			     (element->sysdata))->pdi_list));

		kfree(element->sysdata);

		kfree(element);

	}

	return;

}



/*

 * hubdev_init_node() - Creates the HUB data structure and link them to it's

 *			own NODE specific data area.

 */

void hubdev_init_node(nodepda_t * npda, cnodeid_t node)

{

	struct hubdev_info *hubdev_info;

	int size;

	pg_data_t *pg;



	size = sizeof(struct hubdev_info);



	if (node >= num_online_nodes())	/* Headless/memless IO nodes */

		pg = NODE_DATA(0);

	else

		pg = NODE_DATA(node);



	hubdev_info = (struct hubdev_info *)alloc_bootmem_node(pg, size);



	npda->pdinfo = (void *)hubdev_info;

}



geoid_t

cnodeid_get_geoid(cnodeid_t cnode)

{

	struct hubdev_info *hubdev;



	hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);

	return hubdev->hdi_geoid;

}



void sn_generate_path(struct pci_bus *pci_bus, char *address)

{

	nasid_t nasid;

	cnodeid_t cnode;

	geoid_t geoid;

	moduleid_t moduleid;

	u16 bricktype;



	nasid = NASID_GET(SN_PCIBUS_BUSSOFT(pci_bus)->bs_base);

	cnode = nasid_to_cnodeid(nasid);

	geoid = cnodeid_get_geoid(cnode);

	moduleid = geo_module(geoid);



	sprintf(address, "module_%c%c%c%c%.2d",

		'0'+RACK_GET_CLASS(MODULE_GET_RACK(moduleid)),

		'0'+RACK_GET_GROUP(MODULE_GET_RACK(moduleid)),

		'0'+RACK_GET_NUM(MODULE_GET_RACK(moduleid)),

		MODULE_GET_BTCHAR(moduleid), MODULE_GET_BPOS(moduleid));



	/* Tollhouse requires slot id to be displayed */

	bricktype = MODULE_GET_BTYPE(moduleid);

	if ((bricktype == L1_BRICKTYPE_191010) ||

	    (bricktype == L1_BRICKTYPE_1932))

			sprintf(address, "%s^%d", address, geo_slot(geoid));

}



/*

 * sn_pci_fixup_bus() - Perform SN specific setup of software structs

 *			(pcibus_bussoft, pcidev_info) and hardware

 *			registers, for the specified bus and devices under it.

 */

void __devinit

sn_pci_fixup_bus(struct pci_bus *bus)

{



	if (SN_ACPI_BASE_SUPPORT())

		sn_acpi_bus_fixup(bus);

	else

		sn_bus_fixup(bus);

}



/*

 * sn_io_early_init - Perform early IO (and some non-IO) initialization.

 *		      In particular, setup the sn_pci_provider[] array.

 *		      This needs to be done prior to any bus scanning

 *		      (acpi_scan_init()) in the ACPI case, as the SN

 *		      bus fixup code will reference the array.

 */

static int __init

sn_io_early_init(void)

{

	int i;



	if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())

		return 0;



	/*

	 * prime sn_pci_provider[].  Individial provider init routines will

	 * override their respective default entries.

	 */



	for (i = 0; i < PCIIO_ASIC_MAX_TYPES; i++)

		sn_pci_provider[i] = &sn_pci_default_provider;



	pcibr_init_provider();

	tioca_init_provider();

	tioce_init_provider();



	/*

	 * This is needed to avoid bounce limit checks in the blk layer

	 */

	ia64_max_iommu_merge_mask = ~PAGE_MASK;



	sn_irq_lh_init();

	INIT_LIST_HEAD(&sn_sysdata_list);

	sn_init_cpei_timer();



#ifdef CONFIG_PROC_FS

	register_sn_procfs();

#endif



	printk(KERN_INFO "ACPI  DSDT OEM Rev 0x%x\n",

	       acpi_gbl_DSDT->oem_revision);

	if (SN_ACPI_BASE_SUPPORT())

		sn_io_acpi_init();

	else

		sn_io_init();

	return 0;

}



arch_initcall(sn_io_early_init);



/*

 * sn_io_late_init() - Perform any final platform specific IO initialization.

 */



int __init

sn_io_late_init(void)

{

	struct pci_bus *bus;

	struct pcibus_bussoft *bussoft;

	cnodeid_t cnode;

	nasid_t nasid;

	cnodeid_t near_cnode;



	if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())

		return 0;



	/*

	 * Setup closest node in pci_controller->node for

	 * PIC, TIOCP, TIOCE (TIOCA does it during bus fixup using

	 * info from the PROM).

	 */

	bus = NULL;

	while ((bus = pci_find_next_bus(bus)) != NULL) {

		bussoft = SN_PCIBUS_BUSSOFT(bus);

		nasid = NASID_GET(bussoft->bs_base);

		cnode = nasid_to_cnodeid(nasid);

		if ((bussoft->bs_asic_type == PCIIO_ASIC_TYPE_TIOCP) ||

		    (bussoft->bs_asic_type == PCIIO_ASIC_TYPE_TIOCE)) {

			/* TIO PCI Bridge: find nearest node with CPUs */

			int e = sn_hwperf_get_nearest_node(cnode, NULL,

							   &near_cnode);

			if (e < 0) {

				near_cnode = (cnodeid_t)-1; /* use any node */

				printk(KERN_WARNING "pcibr_bus_fixup: failed "

				       "to find near node with CPUs to TIO "

				       "node %d, err=%d\n", cnode, e);

			}

			PCI_CONTROLLER(bus)->node = near_cnode;

		} else if (bussoft->bs_asic_type == PCIIO_ASIC_TYPE_PIC) {

			PCI_CONTROLLER(bus)->node = cnode;

		}

	}



	sn_ioif_inited = 1;	/* SN I/O infrastructure now initialized */



	return 0;

}



fs_initcall(sn_io_late_init);



EXPORT_SYMBOL(sn_pci_fixup_slot);

EXPORT_SYMBOL(sn_pci_unfixup_slot);

EXPORT_SYMBOL(sn_bus_store_sysdata);

EXPORT_SYMBOL(sn_bus_free_sysdata);

EXPORT_SYMBOL(sn_generate_path);

arch/ia64/sn/kernel/io_init.c

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