[PATCH] PCI: altix: msi support

[linux-2.6/verdex.git] / arch / ia64 / sn / kernel / io_init.c

/*
 * 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) 1992 - 1997, 2000-2005 Silicon Graphics, Inc. All rights reserved.
 */

#include <linux/bootmem.h>
#include <linux/nodemask.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"


extern void sn_init_cpei_timer(void);
extern void register_sn_procfs(void);

static struct list_head sn_sysdata_list;

/* sysdata list struct */
struct sysdata_el {
        struct list_head entry;
        void *sysdata;
};

struct slab_info {
        struct hubdev_info hubdev;
};

struct brick {
        moduleid_t id;          /* Module ID of this module        */
        struct slab_info slab_info[MAX_SLABS + 1];
};

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

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

static int max_segment_number;           /* Default highest segment number */
static int max_pcibus_number = 255;     /* Default highest pci bus number */

/*
 * 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 hub device info structure for the given nasid.
 */
static inline u64 sal_get_hubdev_info(u64 handle, 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_HUBDEV_INFO,
                        (u64) handle, (u64) address, 0, 0, 0, 0, 0);
        return ret_stuff.v0;
}

/*
 * Retrieve the pci bus information given the bus number.
 */
static inline u64 sal_get_pcibus_info(u64 segment, u64 busnum, 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_PCIBUS_INFO,
                        (u64) segment, (u64) busnum, (u64) address, 0, 0, 0, 0);
        return ret_stuff.v0;
}

/*
 * 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_PCI_CONTROLLER(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_fixup_ionodes() - This routine initializes the HUB data strcuture for
 *      each node in the system.
 */
static void __init sn_fixup_ionodes(void)
{
        struct sn_flush_device_kernel *sn_flush_device_kernel;
        struct sn_flush_device_kernel *dev_entry;
        struct hubdev_info *hubdev;
        u64 status;
        u64 nasid;
        int i, widget, device, size;

        /*
         * Get SGI Specific HUB chipset information.
         * Inform Prom that this kernel can support domain bus numbering.
         */
        for (i = 0; i < num_cnodes; i++) {
                hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);
                nasid = cnodeid_to_nasid(i);
                hubdev->max_segment_number = 0xffffffff;
                hubdev->max_pcibus_number = 0xff;
                status = sal_get_hubdev_info(nasid, (u64) __pa(hubdev));
                if (status)
                        continue;

                /* Save the largest Domain and pcibus numbers found. */
                if (hubdev->max_segment_number) {
                        /*
                         * Dealing with a Prom that supports segments.
                         */
                        max_segment_number = hubdev->max_segment_number;
                        max_pcibus_number = hubdev->max_pcibus_number;
                }

                /* Attach the error interrupt handlers */
                if (nasid & 1)
                        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)
                        continue;

                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(
                                                     nasid, widget, device,
                                                     (u64)(dev_entry->common));
                                else
                                        status = sn_device_fixup_war(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;
                }
        }
}

/*
 * sn_pci_window_fixup() - Create a pci_window for each device resource.
 *                         Until ACPI support is added, we need this code
 *                         to setup pci_windows for use by
 *                         pcibios_bus_to_resource(),
 *                         pcibios_resource_to_bus(), etc.
 */
static void
sn_pci_window_fixup(struct pci_dev *dev, unsigned int count,
                    s64 * pci_addrs)
{
        struct pci_controller *controller = PCI_CONTROLLER(dev->bus);
        unsigned int i;
        unsigned int idx;
        unsigned int new_count;
        struct pci_window *new_window;

        if (count == 0)
                return;
        idx = controller->windows;
        new_count = controller->windows + count;
        new_window = kcalloc(new_count, sizeof(struct pci_window), GFP_KERNEL);
        if (new_window == NULL)
                BUG();
        if (controller->window) {
                memcpy(new_window, controller->window,
                       sizeof(struct pci_window) * controller->windows);
                kfree(controller->window);
        }

        /* Setup a pci_window for each device resource. */
        for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
                if (pci_addrs[i] == -1)
                        continue;

                new_window[idx].offset = dev->resource[i].start - pci_addrs[i];
                new_window[idx].resource = dev->resource[i];
                idx++;
        }

        controller->windows = new_count;
        controller->window = new_window;
}

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)
{
        unsigned int count = 0;
        int idx;
        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;
        s64 pci_addrs[PCI_ROM_RESOURCE + 1];
        struct sn_irq_info *sn_irq_info;
        unsigned long size;
        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 sn_pci_controller struct */
        list_add_tail(&pcidev_info->pdi_list,
                      &(SN_PCI_CONTROLLER(dev->bus)->pcidev_info));

        /* Copy over PIO Mapped Addresses */
        for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
                unsigned long start, end, addr;

                if (!pcidev_info->pdi_pio_mapped_addr[idx]) {
                        pci_addrs[idx] = -1;
                        continue;
                }

                start = dev->resource[idx].start;
                end = dev->resource[idx].end;
                size = end - start;
                if (size == 0) {
                        pci_addrs[idx] = -1;
                        continue;
                }
                pci_addrs[idx] = start;
                count++;
                addr = pcidev_info->pdi_pio_mapped_addr[idx];
                addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET;
                dev->resource[idx].start = addr;
                dev->resource[idx].end = addr + size;
                if (dev->resource[idx].flags & IORESOURCE_IO)
                        dev->resource[idx].parent = &ioport_resource;
                else
                        dev->resource[idx].parent = &iomem_resource;
        }
        /* Create a pci_window in the pci_controller struct for
         * each device resource.
         */
        if (count > 0)
                sn_pci_window_fixup(dev, count, pci_addrs);

        /*
         * 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_pci_controller_fixup() - This routine sets up a bus's resources
 * consistent with the Linux PCI abstraction layer.
 */
void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
{
        int status;
        int nasid, cnode;
        struct pci_controller *controller;
        struct sn_pci_controller *sn_controller;
        struct pcibus_bussoft *prom_bussoft_ptr;
        struct hubdev_info *hubdev_info;
        void *provider_soft;
        struct sn_pcibus_provider *provider;

        status = sal_get_pcibus_info((u64) segment, (u64) busnum,
                                     (u64) ia64_tpa(&prom_bussoft_ptr));
        if (status > 0)
                return;         /*bus # does not exist */
        prom_bussoft_ptr = __va(prom_bussoft_ptr);

        /* Allocate a sn_pci_controller, which has a pci_controller struct
         * as the first member.
         */
        sn_controller = kzalloc(sizeof(struct sn_pci_controller), GFP_KERNEL);
        if (!sn_controller)
                BUG();
        INIT_LIST_HEAD(&sn_controller->pcidev_info);
        controller = &sn_controller->pci_controller;
        controller->segment = segment;

        if (bus == NULL) {
                bus = pci_scan_bus(busnum, &pci_root_ops, controller);
                if (bus == NULL)
                        goto error_return; /* error, or bus already scanned */
                bus->sysdata = NULL;
        }

        if (bus->sysdata)
                goto error_return; /* sysdata already alloc'd */

        /*
         * Per-provider fixup.  Copies the contents from prom to local
         * area and links SN_PCIBUS_BUSSOFT().
         */

        if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES)
                goto error_return; /* unsupported asic type */

        if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB)
                goto error_return; /* no further fixup necessary */

        provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];
        if (provider == NULL)
                goto error_return; /* no provider registerd for this asic */

        bus->sysdata = controller;
        if (provider->bus_fixup)
                provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr, controller);
        else
                provider_soft = NULL;

        if (provider_soft == NULL) {
                /* fixup failed or not applicable */
                bus->sysdata = NULL;
                goto error_return;
        }

        /*
         * Setup pci_windows for legacy IO and MEM space.
         * (Temporary until ACPI support is in place.)
         */
        controller->window = kcalloc(2, sizeof(struct pci_window), GFP_KERNEL);
        if (controller->window == NULL)
                BUG();
        controller->window[0].offset = prom_bussoft_ptr->bs_legacy_io;
        controller->window[0].resource.name = "legacy_io";
        controller->window[0].resource.flags = IORESOURCE_IO;
        controller->window[0].resource.start = prom_bussoft_ptr->bs_legacy_io;
        controller->window[0].resource.end =
            controller->window[0].resource.start + 0xffff;
        controller->window[0].resource.parent = &ioport_resource;
        controller->window[1].offset = prom_bussoft_ptr->bs_legacy_mem;
        controller->window[1].resource.name = "legacy_mem";
        controller->window[1].resource.flags = IORESOURCE_MEM;
        controller->window[1].resource.start = prom_bussoft_ptr->bs_legacy_mem;
        controller->window[1].resource.end =
            controller->window[1].resource.start + (1024 * 1024) - 1;
        controller->window[1].resource.parent = &iomem_resource;
        controller->windows = 2;

        /*
         * Generic bus fixup goes here.  Don't reference prom_bussoft_ptr
         * after this point.
         */

        PCI_CONTROLLER(bus)->platform_data = provider_soft;
        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;
        }
        return;

error_return:

        kfree(sn_controller);
        return;
}

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;
}

/*
 * Ugly hack to get PCI setup until we have a proper ACPI namespace.
 */

#define PCI_BUSES_TO_SCAN 256

static int __init sn_pci_init(void)
{
        int i, j;
        struct pci_dev *pci_dev = NULL;

        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_fixup_ionodes();
        sn_irq_lh_init();
        INIT_LIST_HEAD(&sn_sysdata_list);
        sn_init_cpei_timer();

#ifdef CONFIG_PROC_FS
        register_sn_procfs();
#endif

        /* busses are not known yet ... */
        for (i = 0; i <= max_segment_number; i++)
                for (j = 0; j <= max_pcibus_number; j++)
                        sn_pci_controller_fixup(i, j, NULL);

        /*
         * Generic Linux PCI Layer has created the pci_bus and pci_dev 
         * structures - time for us to add our SN PLatform specific 
         * information.
         */

        while ((pci_dev =
                pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) != NULL)
                sn_pci_fixup_slot(pci_dev);

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

        return 0;
}

/*
 * 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));
}

subsys_initcall(sn_pci_init);
EXPORT_SYMBOL(sn_pci_fixup_slot);
EXPORT_SYMBOL(sn_pci_unfixup_slot);
EXPORT_SYMBOL(sn_pci_controller_fixup);
EXPORT_SYMBOL(sn_bus_store_sysdata);
EXPORT_SYMBOL(sn_bus_free_sysdata);
EXPORT_SYMBOL(sn_generate_path);