[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 */

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_alloc_pci_sysdata() - This routine allocates a pci controller
 *	which is expected as the pci_dev and pci_bus sysdata by the Linux
 *	PCI infrastructure.
 */
static inline struct pci_controller *sn_alloc_pci_sysdata(void)
{
	struct pci_controller *pci_sysdata;

	pci_sysdata = kmalloc(sizeof(*pci_sysdata), GFP_KERNEL);
	if (!pci_sysdata)
		BUG();

	memset(pci_sysdata, 0, sizeof(*pci_sysdata));
	return pci_sysdata;
}

/*
 * 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;
		}

	}

}

/*
 * 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;

	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.
 */
static void sn_pci_controller_fixup(int segment, int busnum)
{
	int status = 0;
	int nasid, cnode;
	struct pci_bus *bus;
	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 = sn_alloc_pci_sysdata();
	/* controller non-zero is BUG'd in sn_alloc_pci_sysdata */

	bus = pci_scan_bus(busnum, &pci_root_ops, controller);
	if (bus == NULL) {
		return;		/* error, or bus already scanned */
	}

	/*
	 * 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 */
	}

	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]);
}

/*
 * 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();
	sn_init_cpei_timer();

#ifdef CONFIG_PROC_FS
	register_sn_procfs();
#endif

	for (i = 0; i < PCI_BUSES_TO_SCAN; i++) {
		sn_pci_controller_fixup(0, i);
	}

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