patch-2.4.22 linux-2.4.22/arch/ia64/sn/io/hubspc.c
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- Lines: 252
- Date:
1969-12-31 16:00:00.000000000 -0800
- Orig file:
linux-2.4.21/arch/ia64/sn/io/hubspc.c
- Orig date:
2003-06-13 07:51:30.000000000 -0700
diff -urN linux-2.4.21/arch/ia64/sn/io/hubspc.c linux-2.4.22/arch/ia64/sn/io/hubspc.c
@@ -1,251 +0,0 @@
-/* $Id$
- *
- * 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, 2000-2002 Silicon Graphics, Inc. All rights reserved.
- */
-
-/*
- * hubspc.c - Hub Memory Space Management Driver
- * This driver implements the managers for the following
- * memory resources:
- * 1) reference counters
- */
-
-#include <linux/types.h>
-#include <linux/config.h>
-#include <linux/slab.h>
-#include <asm/sn/sgi.h>
-#include <asm/sn/io.h>
-#include <asm/sn/sn_cpuid.h>
-#include <linux/devfs_fs.h>
-#include <linux/devfs_fs_kernel.h>
-#include <asm/io.h>
-#include <asm/sn/iograph.h>
-#include <asm/sn/invent.h>
-#include <asm/sn/hcl.h>
-#include <asm/sn/labelcl.h>
-#include <asm/sn/sn1/mem_refcnt.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/snconfig.h>
-#include <asm/sn/sn1/hubspc.h>
-#include <asm/sn/ksys/elsc.h>
-#include <asm/sn/simulator.h>
-
-
-/* Uncomment the following line for tracing */
-/* #define HUBSPC_DEBUG 1 */
-
-int hubspc_devflag = D_MP;
-
-
-/***********************************************************************/
-/* CPU Prom Space */
-/***********************************************************************/
-
-typedef struct cpuprom_info {
- devfs_handle_t prom_dev;
- devfs_handle_t nodevrtx;
- struct cpuprom_info *next;
-}cpuprom_info_t;
-
-static cpuprom_info_t *cpuprom_head;
-static spinlock_t cpuprom_spinlock;
-#define PROM_LOCK() mutex_spinlock(&cpuprom_spinlock)
-#define PROM_UNLOCK(s) mutex_spinunlock(&cpuprom_spinlock, (s))
-
-/*
- * Add prominfo to the linked list maintained.
- */
-void
-prominfo_add(devfs_handle_t hub, devfs_handle_t prom)
-{
- cpuprom_info_t *info;
- unsigned long s;
-
- info = kmalloc(sizeof(cpuprom_info_t), GFP_KERNEL);
- ASSERT(info);
- info->prom_dev = prom;
- info->nodevrtx = hub;
-
-
- s = PROM_LOCK();
- info->next = cpuprom_head;
- cpuprom_head = info;
- PROM_UNLOCK(s);
-}
-
-void
-prominfo_del(devfs_handle_t prom)
-{
- unsigned long s;
- cpuprom_info_t *info;
- cpuprom_info_t **prev;
-
- s = PROM_LOCK();
- prev = &cpuprom_head;
- while ( (info = *prev) ) {
- if (info->prom_dev == prom) {
- *prev = info->next;
- PROM_UNLOCK(s);
- return;
- }
-
- prev = &info->next;
- }
- PROM_UNLOCK(s);
- ASSERT(0);
-}
-
-devfs_handle_t
-prominfo_nodeget(devfs_handle_t prom)
-{
- unsigned long s;
- cpuprom_info_t *info;
-
- s = PROM_LOCK();
- info = cpuprom_head;
- while (info) {
- if(info->prom_dev == prom) {
- PROM_UNLOCK(s);
- return info->nodevrtx;
- }
- info = info->next;
- }
- PROM_UNLOCK(s);
- return 0;
-}
-
-#if defined(CONFIG_IA64_SGI_SN1)
-#define SN_PROMVERSION INV_IP35PROM
-
-/* Add "detailed" labelled inventory information to the
- * prom vertex
- */
-void
-cpuprom_detailed_inventory_info_add(devfs_handle_t prom_dev,devfs_handle_t node)
-{
- invent_miscinfo_t *cpuprom_inventory_info;
- extern invent_generic_t *klhwg_invent_alloc(cnodeid_t cnode,
- int class, int size);
- cnodeid_t cnode = hubdev_cnodeid_get(node);
-
- /* Allocate memory for the extra inventory information
- * for the prom
- */
- cpuprom_inventory_info = (invent_miscinfo_t *)
- klhwg_invent_alloc(cnode, INV_PROM, sizeof(invent_miscinfo_t));
-
- ASSERT(cpuprom_inventory_info);
-
- /* Set the enabled flag so that the hinv interprets this
- * information
- */
- cpuprom_inventory_info->im_gen.ig_flag = INVENT_ENABLED;
- cpuprom_inventory_info->im_type = SN_PROMVERSION;
- /* Store prom revision into inventory information */
- cpuprom_inventory_info->im_rev = IP27CONFIG.pvers_rev;
- cpuprom_inventory_info->im_version = IP27CONFIG.pvers_vers;
-
- /* Store this info as labelled information hanging off the
- * prom device vertex
- */
- hwgraph_info_add_LBL(prom_dev, INFO_LBL_DETAIL_INVENT,
- (arbitrary_info_t) cpuprom_inventory_info);
- /* Export this information so that user programs can get to
- * this by using attr_get()
- */
- hwgraph_info_export_LBL(prom_dev, INFO_LBL_DETAIL_INVENT,
- sizeof(invent_miscinfo_t));
-}
-
-#endif /* CONFIG_IA64_SGI_SN1 */
-
-
-/***********************************************************************/
-/* Base Hub Space Driver */
-/***********************************************************************/
-
-/*
- * hubspc_init
- * Registration of the hubspc devices with the hub manager
- */
-void
-hubspc_init(void)
-{
- /*
- * Register with the hub manager
- */
-
- /* The reference counters */
-#if defined(CONFIG_IA64_SGI_SN1)
- hubdev_register(mem_refcnt_attach);
-#endif
-
-#ifdef CONFIG_IA64_SGI_SN1
- /* L1 system controller link */
- if ( !IS_RUNNING_ON_SIMULATOR() ) {
- /* initialize the L1 link */
- extern void l1_init(void);
- l1_init();
- }
-#endif /* CONFIG_IA64_SGI_SN1 */
-#ifdef HUBSPC_DEBUG
- printk("hubspc_init: Completed\n");
-#endif /* HUBSPC_DEBUG */
- /* Initialize spinlocks */
- mutex_spinlock_init(&cpuprom_spinlock);
-}
-
-/* ARGSUSED */
-int
-hubspc_open(devfs_handle_t *devp, mode_t oflag, int otyp, cred_t *crp)
-{
- return (0);
-}
-
-
-/* ARGSUSED */
-int
-hubspc_close(devfs_handle_t dev, int oflag, int otyp, cred_t *crp)
-{
- return (0);
-}
-
-/* ARGSUSED */
-int
-hubspc_map(devfs_handle_t dev, vhandl_t *vt, off_t off, size_t len, uint prot)
-{
- /*REFERENCED*/
- int errcode = 0;
-
- /* check validity of request */
- if( len == 0 ) {
- return -ENXIO;
- }
-
- return errcode;
-}
-
-/* ARGSUSED */
-int
-hubspc_unmap(devfs_handle_t dev, vhandl_t *vt)
-{
- return (0);
-
-}
-
-/* ARGSUSED */
-int
-hubspc_ioctl(devfs_handle_t dev,
- int cmd,
- void *arg,
- int mode,
- cred_t *cred_p,
- int *rvalp)
-{
- return (0);
-
-}
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