[net-next-2.6.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, 2000-2004 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/geo.h>
#include <asm/sn/io.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 "xtalk/hubdev.h"
#include "xtalk/xwidgetdev.h"

nasid_t master_nasid = INVALID_NASID;	/* Partition Master */

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 = 0;		/* 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)
{
	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)
{
	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.  This list is needed 
 * to implement the WAR - Flush DMA data on PIO Reads.
 */
static inline uint64_t
sal_get_widget_dmaflush_list(u64 nasid, u64 widget_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_WIDGET_DMAFLUSH_LIST,
			(u64) nasid, (u64) widget_num, (u64) address, 0, 0, 0,
			0);
	return ret_stuff.v0;

}

/*
 * Retrieve the hub device info structure for the given nasid.
 */
static inline uint64_t 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 uint64_t 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 uint64_t
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_fixup_ionodes() - This routine initializes the HUB data strcuture for 
 *	each node in the system.
 */
static void sn_fixup_ionodes(void)
{

	struct sn_flush_device_list *sn_flush_device_list;
	struct hubdev_info *hubdev;
	uint64_t status;
	uint64_t nasid;
	int i, widget;

	for (i = 0; i < numionodes; i++) {
		hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);
		nasid = cnodeid_to_nasid(i);
		status = sal_get_hubdev_info(nasid, (uint64_t) __pa(hubdev));
		if (status)
			continue;

		/* 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;

		hubdev->hdi_flush_nasid_list.widget_p =
		    kmalloc((HUB_WIDGET_ID_MAX + 1) *
			    sizeof(struct sn_flush_device_list *), GFP_KERNEL);

		memset(hubdev->hdi_flush_nasid_list.widget_p, 0x0,
		       (HUB_WIDGET_ID_MAX + 1) *
		       sizeof(struct sn_flush_device_list *));

		for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
			sn_flush_device_list = kmalloc(DEV_PER_WIDGET *
						       sizeof(struct
							      sn_flush_device_list),
						       GFP_KERNEL);
			memset(sn_flush_device_list, 0x0,
			       DEV_PER_WIDGET *
			       sizeof(struct sn_flush_device_list));

			status =
			    sal_get_widget_dmaflush_list(nasid, widget,
							 (uint64_t)
							 __pa
							 (sn_flush_device_list));
			if (status) {
				kfree(sn_flush_device_list);
				continue;
			}

			hubdev->hdi_flush_nasid_list.widget_p[widget] =
			    sn_flush_device_list;
		}

	}

}

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 idx;
	int segment = 0;
	int status = 0;
	struct pcibus_bussoft *bs;
 	struct pci_bus *host_pci_bus;
 	struct pci_dev *host_pci_dev;
 	struct sn_irq_info *sn_irq_info;
 	unsigned long size;
 	unsigned int bus_no, devfn;

	pci_dev_get(dev); /* for the sysdata pointer */
	dev->sysdata = kmalloc(sizeof(struct pcidev_info), GFP_KERNEL);
	if (SN_PCIDEV_INFO(dev) <= 0)
		BUG();		/* Cannot afford to run out of memory */
	memset(SN_PCIDEV_INFO(dev), 0, sizeof(struct pcidev_info));

	sn_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
	if (sn_irq_info <= 0)
		BUG();		/* Cannot afford to run out of memory */
	memset(sn_irq_info, 0, sizeof(struct sn_irq_info));

	/* Call to retrieve pci device information needed by kernel. */
	status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number, 
				     dev->devfn,
				     (u64) __pa(SN_PCIDEV_INFO(dev)),
				     (u64) __pa(sn_irq_info));
	if (status)
		BUG(); /* Cannot get platform pci device information */

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

		if (!SN_PCIDEV_INFO(dev)->pdi_pio_mapped_addr[idx])
			continue;

		start = dev->resource[idx].start;
		end = dev->resource[idx].end;
		size = end - start;
		addr = SN_PCIDEV_INFO(dev)->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;
	}

	/*
	 * 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 = SN_PCIDEV_INFO(dev)->pdi_slot_host_handle >> 32;
 	devfn = SN_PCIDEV_INFO(dev)->pdi_slot_host_handle & 0xffffffff;
 	host_pci_bus = pci_find_bus(pci_domain_nr(dev->bus), bus_no);
 	host_pci_dev = pci_get_slot(host_pci_bus, devfn);

	SN_PCIDEV_INFO(dev)->host_pci_dev = host_pci_dev;
	SN_PCIDEV_INFO(dev)->pdi_host_pcidev_info =
	    					SN_PCIDEV_INFO(host_pci_dev);
	SN_PCIDEV_INFO(dev)->pdi_linux_pcidev = dev;
	bs = SN_PCIBUS_BUSSOFT(dev->bus);
	SN_PCIDEV_INFO(dev)->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) {
		SN_PCIDEV_INFO(dev)->pdi_sn_irq_info = sn_irq_info;
		dev->irq = SN_PCIDEV_INFO(dev)->pdi_sn_irq_info->irq_irq;
		sn_irq_fixup(dev, sn_irq_info);
	} else {
		SN_PCIDEV_INFO(dev)->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 = 0;
	int nasid, cnode;
	struct pci_controller *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);

 	controller = kcalloc(1,sizeof(struct pci_controller), GFP_KERNEL);
 	if (!controller)
 		BUG();

	if (bus == NULL) {
 		bus = pci_scan_bus(busnum, &pci_root_ops, controller);
 		if (bus == NULL)
 			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)
		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)
		return;		/* no provider registerd for this asic */

	provider_soft = NULL;
	if (provider->bus_fixup)
		provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr);

	if (provider_soft == NULL)
		return;		/* fixup failed or not applicable */

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

	bus->sysdata = controller;
	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]);

	return;

error_return:

	kfree(controller);
	return;
}

void sn_bus_store_sysdata(struct pci_dev *dev)
{
	struct sysdata_el *element;

	element = kcalloc(1, sizeof(struct sysdata_el), GFP_KERNEL);
	if (!element) {
		dev_dbg(dev, "%s: out of memory!\n", __FUNCTION__);
		return;
	}
	element->sysdata = dev->sysdata;
	list_add(&element->entry, &sn_sysdata_list);
}

void sn_bus_free_sysdata(void)
{
	struct sysdata_el *element;
	struct list_head *list;

sn_sysdata_free_start:
	list_for_each(list, &sn_sysdata_list) {
		element = list_entry(list, struct sysdata_el, entry);
		list_del(&element->entry);
		kfree(element->sysdata);
		kfree(element);
		goto sn_sysdata_free_start;
	}
	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 = 0;
	struct pci_dev *pci_dev = NULL;
	extern void sn_init_cpei_timer(void);
#ifdef CONFIG_PROC_FS
	extern void register_sn_procfs(void);
#endif

	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();

	/*
	 * 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 < PCI_BUSES_TO_SCAN; i++)
		sn_pci_controller_fixup(0, i, 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;

	if (node >= num_online_nodes())	/* Headless/memless IO nodes */
		hubdev_info =
		    (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(0),
							     sizeof(struct
								    hubdev_info));
	else
		hubdev_info =
		    (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(node),
							     sizeof(struct
								    hubdev_info));
	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;

}

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);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* This file is subject to the terms and conditions of the GNU General Public
	3	* License. See the file "COPYING" in the main directory of this archive
	4	* for more details.
	5	*
	6	* Copyright (C) 1992 - 1997, 2000-2004 Silicon Graphics, Inc. All rights reserved.
	7	*/
	8
	9	#include <linux/bootmem.h>
	10	#include <linux/nodemask.h>
	11	#include <asm/sn/types.h>
1da177e4	12	#include <asm/sn/addrs.h>
1da177e4	13	#include <asm/sn/geo.h>
1da177e4	14	#include <asm/sn/io.h>
c13cf371 PB	15	#include <asm/sn/pcibr_provider.h>
	16	#include <asm/sn/pcibus_provider_defs.h>
	17	#include <asm/sn/pcidev.h>
1da177e4	18	#include <asm/sn/simulator.h>
c13cf371	19	#include <asm/sn/sn_sal.h>
9c90bdde	20	#include <asm/sn/tioca_provider.h>
c13cf371 PB	21	#include "xtalk/hubdev.h"
c13cf371 PB	22	#include "xtalk/xwidgetdev.h"
1da177e4	23
1da177e4 LT	24	nasid_t master_nasid = INVALID_NASID; /* Partition Master */
1da177e4 LT	25
6f354b01 PB	26	static struct list_head sn_sysdata_list;
	27
	28	/* sysdata list struct */
	29	struct sysdata_el {
	30	struct list_head entry;
	31	void *sysdata;
	32	};
	33
1da177e4 LT	34	struct slab_info {
	35	struct hubdev_info hubdev;
	36	};
	37
	38	struct brick {
	39	moduleid_t id; /* Module ID of this module */
	40	struct slab_info slab_info[MAX_SLABS + 1];
	41	};
	42
	43	int sn_ioif_inited = 0; /* SN I/O infrastructure initialized? */
	44
e955d825 MM	45	struct sn_pcibus_provider sn_pci_provider[PCIIO_ASIC_MAX_TYPES]; / indexed by asic type */
	46
	47	/*
	48	* Hooks and struct for unsupported pci providers
	49	*/
	50
	51	static dma_addr_t
	52	sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size)
	53	{
	54	return 0;
	55	}
	56
	57	static void
	58	sn_default_pci_unmap(struct pci_dev *pdev, dma_addr_t addr, int direction)
	59	{
	60	return;
	61	}
	62
	63	static void *
	64	sn_default_pci_bus_fixup(struct pcibus_bussoft *soft)
	65	{
	66	return NULL;
	67	}
	68
	69	static struct sn_pcibus_provider sn_pci_default_provider = {
	70	.dma_map = sn_default_pci_map,
	71	.dma_map_consistent = sn_default_pci_map,
	72	.dma_unmap = sn_default_pci_unmap,
	73	.bus_fixup = sn_default_pci_bus_fixup,
	74	};
	75
1da177e4 LT	76	/*
	77	* Retrieve the DMA Flush List given nasid. This list is needed
	78	* to implement the WAR - Flush DMA data on PIO Reads.
	79	*/
	80	static inline uint64_t
	81	sal_get_widget_dmaflush_list(u64 nasid, u64 widget_num, u64 address)
	82	{
	83
	84	struct ia64_sal_retval ret_stuff;
	85	ret_stuff.status = 0;
	86	ret_stuff.v0 = 0;
	87
	88	SAL_CALL_NOLOCK(ret_stuff,
	89	(u64) SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
	90	(u64) nasid, (u64) widget_num, (u64) address, 0, 0, 0,
	91	0);
	92	return ret_stuff.v0;
	93
	94	}
	95
	96	/*
	97	* Retrieve the hub device info structure for the given nasid.
	98	*/
	99	static inline uint64_t sal_get_hubdev_info(u64 handle, u64 address)
	100	{
	101
	102	struct ia64_sal_retval ret_stuff;
	103	ret_stuff.status = 0;
	104	ret_stuff.v0 = 0;
	105
	106	SAL_CALL_NOLOCK(ret_stuff,
	107	(u64) SN_SAL_IOIF_GET_HUBDEV_INFO,
	108	(u64) handle, (u64) address, 0, 0, 0, 0, 0);
	109	return ret_stuff.v0;
	110	}
	111
	112	/*
	113	* Retrieve the pci bus information given the bus number.
	114	*/
	115	static inline uint64_t sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
	116	{
	117
	118	struct ia64_sal_retval ret_stuff;
	119	ret_stuff.status = 0;
	120	ret_stuff.v0 = 0;
	121
	122	SAL_CALL_NOLOCK(ret_stuff,
	123	(u64) SN_SAL_IOIF_GET_PCIBUS_INFO,
	124	(u64) segment, (u64) busnum, (u64) address, 0, 0, 0, 0);
	125	return ret_stuff.v0;
	126	}
	127
	128	/*
	129	* Retrieve the pci device information given the bus and device\|function number.
	130	*/
	131	static inline uint64_t
	132	sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
	133	u64 sn_irq_info)
	134	{
	135	struct ia64_sal_retval ret_stuff;
	136	ret_stuff.status = 0;
	137	ret_stuff.v0 = 0;
	138
	139	SAL_CALL_NOLOCK(ret_stuff,
140	(u64) SN_SAL_IOIF_GET_PCIDEV_INFO,
141	(u64) segment, (u64) bus_number, (u64) devfn,
142	(u64) pci_dev,
143	sn_irq_info, 0, 0);
144	return ret_stuff.v0;
145	}
146
1da177e4 LT	147	/*
	148	* sn_fixup_ionodes() - This routine initializes the HUB data strcuture for
	149	* each node in the system.
	150	*/
	151	static void sn_fixup_ionodes(void)
	152	{
	153
	154	struct sn_flush_device_list *sn_flush_device_list;
	155	struct hubdev_info *hubdev;
	156	uint64_t status;
	157	uint64_t nasid;
	158	int i, widget;
	159
	160	for (i = 0; i < numionodes; i++) {
	161	hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);
	162	nasid = cnodeid_to_nasid(i);
	163	status = sal_get_hubdev_info(nasid, (uint64_t) __pa(hubdev));
	164	if (status)
	165	continue;
	166
c0b12422 CN	167	/* Attach the error interrupt handlers */
	168	if (nasid & 1)
	169	ice_error_init(hubdev);
	170	else
	171	hub_error_init(hubdev);
	172
1da177e4 LT	173	for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++)
	174	hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev;
	175
	176	if (!hubdev->hdi_flush_nasid_list.widget_p)
	177	continue;
	178
	179	hubdev->hdi_flush_nasid_list.widget_p =
	180	kmalloc((HUB_WIDGET_ID_MAX + 1) *
	181	sizeof(struct sn_flush_device_list *), GFP_KERNEL);
	182
	183	memset(hubdev->hdi_flush_nasid_list.widget_p, 0x0,
	184	(HUB_WIDGET_ID_MAX + 1) *
	185	sizeof(struct sn_flush_device_list *));
	186
	187	for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
	188	sn_flush_device_list = kmalloc(DEV_PER_WIDGET *
	189	sizeof(struct
	190	sn_flush_device_list),
	191	GFP_KERNEL);
	192	memset(sn_flush_device_list, 0x0,
	193	DEV_PER_WIDGET *
	194	sizeof(struct sn_flush_device_list));
	195
	196	status =
	197	sal_get_widget_dmaflush_list(nasid, widget,
	198	(uint64_t)
	199	__pa
	200	(sn_flush_device_list));
	201	if (status) {
	202	kfree(sn_flush_device_list);
	203	continue;
	204	}
	205
	206	hubdev->hdi_flush_nasid_list.widget_p[widget] =
	207	sn_flush_device_list;
	208	}
	209
1da177e4 LT	210	}
	211
	212	}
	213
6f354b01 PB	214	void sn_pci_unfixup_slot(struct pci_dev *dev)
	215	{
	216	struct pci_dev *host_pci_dev = SN_PCIDEV_INFO(dev)->host_pci_dev;
	217
	218	sn_irq_unfixup(dev);
	219	pci_dev_put(host_pci_dev);
	220	pci_dev_put(dev);
	221	}
	222
1da177e4 LT	223	/*
	224	* sn_pci_fixup_slot() - This routine sets up a slot's resources
	225	* consistent with the Linux PCI abstraction layer. Resources acquired
	226	* from our PCI provider include PIO maps to BAR space and interrupt
	227	* objects.
	228	*/
c13cf371	229	void sn_pci_fixup_slot(struct pci_dev *dev)
1da177e4 LT	230	{
	231	int idx;
	232	int segment = 0;
1da177e4	233	int status = 0;
e955d825	234	struct pcibus_bussoft *bs;
cb4cb2cb PB	235	struct pci_bus *host_pci_bus;
	236	struct pci_dev *host_pci_dev;
	237	struct sn_irq_info *sn_irq_info;
	238	unsigned long size;
	239	unsigned int bus_no, devfn;
1da177e4	240
6f354b01	241	pci_dev_get(dev); /* for the sysdata pointer */
1da177e4 LT	242	dev->sysdata = kmalloc(sizeof(struct pcidev_info), GFP_KERNEL);
	243	if (SN_PCIDEV_INFO(dev) <= 0)
	244	BUG(); /* Cannot afford to run out of memory */
	245	memset(SN_PCIDEV_INFO(dev), 0, sizeof(struct pcidev_info));
	246
	247	sn_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
	248	if (sn_irq_info <= 0)
	249	BUG(); /* Cannot afford to run out of memory */
	250	memset(sn_irq_info, 0, sizeof(struct sn_irq_info));
	251
	252	/* Call to retrieve pci device information needed by kernel. */
	253	status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,
	254	dev->devfn,
	255	(u64) __pa(SN_PCIDEV_INFO(dev)),
	256	(u64) __pa(sn_irq_info));
	257	if (status)
cb4cb2cb	258	BUG(); /* Cannot get platform pci device information */
1da177e4 LT	259
	260	/* Copy over PIO Mapped Addresses */
	261	for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
	262	unsigned long start, end, addr;
	263
	264	if (!SN_PCIDEV_INFO(dev)->pdi_pio_mapped_addr[idx])
	265	continue;
	266
	267	start = dev->resource[idx].start;
	268	end = dev->resource[idx].end;
	269	size = end - start;
	270	addr = SN_PCIDEV_INFO(dev)->pdi_pio_mapped_addr[idx];
	271	addr = ((addr << 4) >> 4) \| __IA64_UNCACHED_OFFSET;
	272	dev->resource[idx].start = addr;
	273	dev->resource[idx].end = addr + size;
	274	if (dev->resource[idx].flags & IORESOURCE_IO)
	275	dev->resource[idx].parent = &ioport_resource;
	276	else
	277	dev->resource[idx].parent = &iomem_resource;
	278	}
	279
6f354b01 PB	280	/*
6f354b01 PB	281	* Using the PROMs values for the PCI host bus, get the Linux
cb4cb2cb PB	282	* PCI host_pci_dev struct and set up host bus linkages
	283	*/
	284
	285	bus_no = SN_PCIDEV_INFO(dev)->pdi_slot_host_handle >> 32;
	286	devfn = SN_PCIDEV_INFO(dev)->pdi_slot_host_handle & 0xffffffff;
	287	host_pci_bus = pci_find_bus(pci_domain_nr(dev->bus), bus_no);
	288	host_pci_dev = pci_get_slot(host_pci_bus, devfn);
	289
	290	SN_PCIDEV_INFO(dev)->host_pci_dev = host_pci_dev;
1da177e4	291	SN_PCIDEV_INFO(dev)->pdi_host_pcidev_info =
cb4cb2cb	292	SN_PCIDEV_INFO(host_pci_dev);
1da177e4	293	SN_PCIDEV_INFO(dev)->pdi_linux_pcidev = dev;
cb4cb2cb	294	bs = SN_PCIBUS_BUSSOFT(dev->bus);
e955d825 MM	295	SN_PCIDEV_INFO(dev)->pdi_pcibus_info = bs;
	296
	297	if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {
	298	SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type];
	299	} else {
	300	SN_PCIDEV_BUSPROVIDER(dev) = &sn_pci_default_provider;
	301	}
1da177e4 LT	302
1da177e4 LT	303	/* Only set up IRQ stuff if this device has a host bus context */
e955d825	304	if (bs && sn_irq_info->irq_irq) {
1da177e4 LT	305	SN_PCIDEV_INFO(dev)->pdi_sn_irq_info = sn_irq_info;
	306	dev->irq = SN_PCIDEV_INFO(dev)->pdi_sn_irq_info->irq_irq;
	307	sn_irq_fixup(dev, sn_irq_info);
cb4cb2cb PB	308	} else {
	309	SN_PCIDEV_INFO(dev)->pdi_sn_irq_info = NULL;
	310	kfree(sn_irq_info);
1da177e4 LT	311	}
	312	}
	313
	314	/*
	315	* sn_pci_controller_fixup() - This routine sets up a bus's resources
	316	* consistent with the Linux PCI abstraction layer.
	317	*/
6f354b01	318	void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
1da177e4 LT	319	{
	320	int status = 0;
	321	int nasid, cnode;
1da177e4 LT	322	struct pci_controller *controller;
	323	struct pcibus_bussoft *prom_bussoft_ptr;
	324	struct hubdev_info *hubdev_info;
	325	void *provider_soft;
e955d825	326	struct sn_pcibus_provider *provider;
1da177e4	327
6f354b01 PB	328	status = sal_get_pcibus_info((u64) segment, (u64) busnum,
	329	(u64) ia64_tpa(&prom_bussoft_ptr));
	330	if (status > 0)
	331	return; /bus # does not exist /
1da177e4	332	prom_bussoft_ptr = __va(prom_bussoft_ptr);
1da177e4	333
6f354b01 PB	334	controller = kcalloc(1,sizeof(struct pci_controller), GFP_KERNEL);
	335	if (!controller)
	336	BUG();
	337
1da177e4	338	if (bus == NULL) {
6f354b01 PB	339	bus = pci_scan_bus(busnum, &pci_root_ops, controller);
	340	if (bus == NULL)
	341	return; /* error, or bus already scanned */
	342	bus->sysdata = NULL;
1da177e4 LT	343	}
1da177e4 LT	344
6f354b01 PB	345	if (bus->sysdata)
	346	goto error_return; /* sysdata already alloc'd */
	347
1da177e4 LT	348	/*
	349	* Per-provider fixup. Copies the contents from prom to local
	350	* area and links SN_PCIBUS_BUSSOFT().
1da177e4 LT	351	*/
1da177e4 LT	352
6f354b01	353	if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES)
e955d825	354	return; /* unsupported asic type */
6f354b01 PB	355
	356	if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB)
	357	goto error_return; /* no further fixup necessary */
e955d825 MM	358
e955d825 MM	359	provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];
6f354b01	360	if (provider == NULL)
e955d825	361	return; /* no provider registerd for this asic */
e955d825 MM	362
e955d825 MM	363	provider_soft = NULL;
6f354b01	364	if (provider->bus_fixup)
e955d825	365	provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr);
1da177e4	366
6f354b01	367	if (provider_soft == NULL)
1da177e4	368	return; /* fixup failed or not applicable */
1da177e4 LT	369
	370	/*
	371	* Generic bus fixup goes here. Don't reference prom_bussoft_ptr
	372	* after this point.
	373	*/
	374
	375	bus->sysdata = controller;
	376	PCI_CONTROLLER(bus)->platform_data = provider_soft;
1da177e4 LT	377	nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);
	378	cnode = nasid_to_cnodeid(nasid);
	379	hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
	380	SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =
	381	&(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);
6f354b01 PB	382
	383	return;
	384
	385	error_return:
	386
	387	kfree(controller);
	388	return;
	389	}
	390
	391	void sn_bus_store_sysdata(struct pci_dev *dev)
	392	{
	393	struct sysdata_el *element;
	394
	395	element = kcalloc(1, sizeof(struct sysdata_el), GFP_KERNEL);
	396	if (!element) {
	397	dev_dbg(dev, "%s: out of memory!\n", __FUNCTION__);
	398	return;
	399	}
	400	element->sysdata = dev->sysdata;
	401	list_add(&element->entry, &sn_sysdata_list);
	402	}
	403
	404	void sn_bus_free_sysdata(void)
	405	{
	406	struct sysdata_el *element;
	407	struct list_head *list;
	408
	409	sn_sysdata_free_start:
	410	list_for_each(list, &sn_sysdata_list) {
	411	element = list_entry(list, struct sysdata_el, entry);
	412	list_del(&element->entry);
	413	kfree(element->sysdata);
	414	kfree(element);
	415	goto sn_sysdata_free_start;
	416	}
	417	return;
1da177e4 LT	418	}
	419
	420	/*
	421	* Ugly hack to get PCI setup until we have a proper ACPI namespace.
	422	*/
	423
	424	#define PCI_BUSES_TO_SCAN 256
	425
	426	static int __init sn_pci_init(void)
	427	{
	428	int i = 0;
	429	struct pci_dev *pci_dev = NULL;
	430	extern void sn_init_cpei_timer(void);
	431	#ifdef CONFIG_PROC_FS
	432	extern void register_sn_procfs(void);
	433	#endif
	434
71a5d027	435	if (!ia64_platform_is("sn2") \|\| IS_RUNNING_ON_FAKE_PROM())
1da177e4 LT	436	return 0;
1da177e4 LT	437
e955d825 MM	438	/*
	439	* prime sn_pci_provider[]. Individial provider init routines will
	440	* override their respective default entries.
	441	*/
	442
	443	for (i = 0; i < PCIIO_ASIC_MAX_TYPES; i++)
	444	sn_pci_provider[i] = &sn_pci_default_provider;
	445
	446	pcibr_init_provider();
9c90bdde	447	tioca_init_provider();
e955d825	448
1da177e4 LT	449	/*
	450	* This is needed to avoid bounce limit checks in the blk layer
	451	*/
	452	ia64_max_iommu_merge_mask = ~PAGE_MASK;
	453	sn_fixup_ionodes();
cb4cb2cb	454	sn_irq_lh_init();
6f354b01	455	INIT_LIST_HEAD(&sn_sysdata_list);
1da177e4 LT	456	sn_init_cpei_timer();
	457
	458	#ifdef CONFIG_PROC_FS
	459	register_sn_procfs();
	460	#endif
	461
6f354b01 PB	462	/* busses are not known yet ... */
	463	for (i = 0; i < PCI_BUSES_TO_SCAN; i++)
	464	sn_pci_controller_fixup(0, i, NULL);
1da177e4 LT	465
	466	/*
	467	* Generic Linux PCI Layer has created the pci_bus and pci_dev
	468	* structures - time for us to add our SN PLatform specific
	469	* information.
	470	*/
	471
	472	while ((pci_dev =
6f354b01	473	pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) != NULL)
1da177e4	474	sn_pci_fixup_slot(pci_dev);
1da177e4 LT	475
	476	sn_ioif_inited = 1; /* sn I/O infrastructure now initialized */
	477
	478	return 0;
	479	}
	480
	481	/*
	482	* hubdev_init_node() - Creates the HUB data structure and link them to it's
	483	* own NODE specific data area.
	484	*/
	485	void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
	486	{
	487
	488	struct hubdev_info *hubdev_info;
	489
	490	if (node >= num_online_nodes()) /* Headless/memless IO nodes */
	491	hubdev_info =
	492	(struct hubdev_info *)alloc_bootmem_node(NODE_DATA(0),
	493	sizeof(struct
	494	hubdev_info));
	495	else
	496	hubdev_info =
	497	(struct hubdev_info *)alloc_bootmem_node(NODE_DATA(node),
	498	sizeof(struct
	499	hubdev_info));
	500	npda->pdinfo = (void *)hubdev_info;
	501
	502	}
	503
	504	geoid_t
	505	cnodeid_get_geoid(cnodeid_t cnode)
	506	{
	507
	508	struct hubdev_info *hubdev;
	509
	510	hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
	511	return hubdev->hdi_geoid;
	512
	513	}
	514
	515	subsys_initcall(sn_pci_init);
6f354b01 PB	516	EXPORT_SYMBOL(sn_pci_fixup_slot);
	517	EXPORT_SYMBOL(sn_pci_unfixup_slot);
	518	EXPORT_SYMBOL(sn_pci_controller_fixup);
	519	EXPORT_SYMBOL(sn_bus_store_sysdata);
	520	EXPORT_SYMBOL(sn_bus_free_sysdata);