File: [local] / sys / xfs / xfs_node.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:04:30 2008 UTC (16 years, 6 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/*
* Copyright (c) 2002 - 2003, Stockholms Universitet
* (Stockholm University, Stockholm Sweden)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the university nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <xfs/xfs_locl.h>
#include <xfs/xfs_common.h>
#include <xfs/xfs_fs.h>
#include <xfs/xfs_deb.h>
#include <xfs/xfs_node.h>
#include <xfs/xfs_vnodeops.h>
#include <xfs/xfs_queue.h>
RCSID("$arla: xfs_node.c,v 1.3 2003/02/06 12:56:09 lha Exp $");
#define xfs_hash(node) \
(((node)->a+(node)->b+(node)->c+(node)->d) % XN_HASHSIZE)
/*
* Init the nnp node storage system
*/
void
nnfs_init_head(struct xfs_nodelist_head *head)
{
int i;
for (i = 0; i < XN_HASHSIZE; i++)
NNPQUEUE_INIT(&head->nh_nodelist[i]);
}
/*
* Tries to purge all nodes from the hashtable. Nodes that unpurgeable
* (still used nodes) are given to proc for special termination
* (conversion to dead node).
*/
void
xfs_node_purge(struct xfs_nodelist_head *head,
void (*func)(struct xfs_node *))
{
panic("xfs_node_purge");
}
/*
* xfs_node_find returns the node with the handle `handlep'.
*/
struct xfs_node *
xfs_node_find(struct xfs_nodelist_head *head, xfs_handle *handlep)
{
struct nh_node_list *h;
struct xfs_node *nn;
h = &head->nh_nodelist[xfs_hash(handlep)];
NNPQUEUE_FOREACH(nn, h, nn_hash) {
if (xfs_handle_eq(handlep, &nn->handle))
break;
}
return nn;
}
/*
* Remove the node `node' from the node storage system.
*/
void
xfs_remove_node(struct xfs_nodelist_head *head, struct xfs_node *node)
{
struct nh_node_list *h;
h = &head->nh_nodelist[xfs_hash(&node->handle)];
NNPQUEUE_REMOVE(node, h, nn_hash);
}
/*
* Add the node `node' from the node storage system.
*/
void
xfs_insert(struct xfs_nodelist_head *head, struct xfs_node *node)
{
struct nh_node_list *h;
h = &head->nh_nodelist[xfs_hash(&node->handle)];
NNPQUEUE_INSERT_HEAD(h, node, nn_hash);
}
/*
* Update `old_handlep' in the node list `head' to `new_handlep'.
*/
int
xfs_update_handle(struct xfs_nodelist_head *head,
xfs_handle *old_handlep, xfs_handle *new_handlep)
{
struct xfs_node *node;
node = xfs_node_find(head, new_handlep);
if (node)
return EEXIST;
node = xfs_node_find(head, old_handlep);
if (node == NULL)
return ENOENT;
xfs_remove_node(head, node);
node->handle = *new_handlep;
xfs_insert(head, node);
return 0;
}