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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2002 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* s1394_fa.c
* 1394 Services Layer Fixed Address Support Routines
* Currently used for FCP support.
*/
#include <sys/conf.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/cmn_err.h>
#include <sys/types.h>
#include <sys/kmem.h>
#include <sys/tnf_probe.h>
#include <sys/1394/t1394.h>
#include <sys/1394/s1394.h>
#include <sys/1394/h1394.h>
static void s1394_fa_completion_cb(cmd1394_cmd_t *cmd);
/*
* s1394_fa_claim_addr_blk()
* Claim fixed address block.
*/
int
s1394_fa_claim_addr(s1394_hal_t *hal, s1394_fa_type_t type,
s1394_fa_descr_t *descr)
{
t1394_alloc_addr_t addr;
s1394_fa_hal_t *falp = &hal->hal_fa[type];
int ret;
TNF_PROBE_0_DEBUG(s1394_fa_claim_addr_enter, S1394_TNF_SL_FA_STACK, "");
/* Might have been claimed already */
if (falp->fal_addr_blk != NULL) {
TNF_PROBE_0_DEBUG(s1394_fa_claim_addr_exit,
S1394_TNF_SL_FA_STACK, "");
return (DDI_SUCCESS);
}
falp->fal_descr = descr;
bzero(&addr, sizeof (addr));
addr.aa_type = T1394_ADDR_FIXED;
addr.aa_address = descr->fd_addr;
addr.aa_length = descr->fd_size;
addr.aa_enable = descr->fd_enable;
addr.aa_evts = descr->fd_evts;
addr.aa_arg = hal;
ret = s1394_claim_addr_blk(hal, &addr);
if (ret != DDI_SUCCESS) {
TNF_PROBE_2(s1394_fa_claim_addr_error, S1394_TNF_SL_FA_ERROR,
"", tnf_int, type, type, tnf_int, ret, ret);
} else {
falp->fal_addr_blk = (s1394_addr_space_blk_t *)addr.aa_hdl;
}
TNF_PROBE_0_DEBUG(s1394_fa_claim_addr_exit, S1394_TNF_SL_FA_STACK, "");
return (ret);
}
/*
* s1394_fa_free_addr_blk()
* Free fixed address block.
*/
void
s1394_fa_free_addr(s1394_hal_t *hal, s1394_fa_type_t type)
{
s1394_fa_hal_t *falp = &hal->hal_fa[type];
int ret;
TNF_PROBE_0_DEBUG(s1394_fa_free_addr_enter, S1394_TNF_SL_FA_STACK, "");
/* Might have been freed already */
if (falp->fal_addr_blk != NULL) {
ret = s1394_free_addr_blk(hal, falp->fal_addr_blk);
if (ret != DDI_SUCCESS) {
TNF_PROBE_1(s1394_fa_free_addr_error,
S1394_TNF_SL_FA_STACK, "", tnf_int, ret, ret);
}
falp->fal_addr_blk = NULL;
}
TNF_PROBE_0_DEBUG(s1394_fa_free_addr_exit, S1394_TNF_SL_FA_STACK, "");
}
/*
* s1394_fa_list_add()
* Add target to the list of FA clients.
* target_list_rwlock should be writer-held.
*/
void
s1394_fa_list_add(s1394_hal_t *hal, s1394_target_t *target,
s1394_fa_type_t type)
{
s1394_fa_hal_t *fal = &hal->hal_fa[type];
if (fal->fal_head == NULL) {
ASSERT(fal->fal_tail == NULL);
fal->fal_head = fal->fal_tail = target;
} else {
fal->fal_tail->target_fa[type].fat_next = target;
fal->fal_tail = target;
}
fal->fal_gen++;
}
/*
* s1394_fa_list_remove()
* Remove target from the list of FA clients.
* target_list_rwlock should be writer-held.
*/
int
s1394_fa_list_remove(s1394_hal_t *hal, s1394_target_t *target,
s1394_fa_type_t type)
{
s1394_fa_hal_t *fal = &hal->hal_fa[type];
s1394_target_t *curp, **nextp, *prevp = NULL;
for (nextp = &fal->fal_head; (curp = *nextp) != NULL; ) {
if (curp == target) {
*nextp = target->target_fa[type].fat_next;
if (target == fal->fal_tail) {
fal->fal_tail = prevp;
}
fal->fal_gen++;
return (DDI_SUCCESS);
}
nextp = &curp->target_fa[type].fat_next;
prevp = curp;
}
return (DDI_FAILURE);
}
/*
* s1394_fa_list_is_empty()
* Returns B_TRUE if the target list is empty
* target_list_rwlock should be at least reader-held.
*/
boolean_t
s1394_fa_list_is_empty(s1394_hal_t *hal, s1394_fa_type_t type)
{
s1394_fa_hal_t *fal = &hal->hal_fa[type];
return (fal->fal_head == NULL);
}
/*
* s1394_fa_list_gen()
* Returns list generation number.
* target_list_rwlock should be at least reader-held.
*/
uint_t
s1394_fa_list_gen(s1394_hal_t *hal, s1394_fa_type_t type)
{
s1394_fa_hal_t *fal = &hal->hal_fa[type];
return (fal->fal_gen);
}
/*
* s1394_fa_init_cmd()
* initialize the FA specific part of the command
*/
void
s1394_fa_init_cmd(s1394_cmd_priv_t *s_priv, s1394_fa_type_t type)
{
s_priv->cmd_ext_type = S1394_CMD_EXT_FA;
s_priv->cmd_ext.fa.type = type;
}
/*
* s1394_fa_convert_cmd()
* convert an FA command (with a relative address) to a regular 1394 command
*/
void
s1394_fa_convert_cmd(s1394_hal_t *hal, cmd1394_cmd_t *cmd)
{
s1394_fa_cmd_priv_t *fa_priv = S1394_GET_FA_CMD_PRIV(cmd);
cmd->cmd_addr += hal->hal_fa[fa_priv->type].fal_descr->fd_conv_base;
fa_priv->completion_callback = cmd->completion_callback;
fa_priv->callback_arg = cmd->cmd_callback_arg;
cmd->completion_callback = s1394_fa_completion_cb;
cmd->cmd_callback_arg = hal;
}
/*
* s1394_fa_restore_cmd()
* opposite of s1394_fa_convert_cmd(): regular 1394 command to FA command
*/
void
s1394_fa_restore_cmd(s1394_hal_t *hal, cmd1394_cmd_t *cmd)
{
s1394_fa_cmd_priv_t *fa_priv = S1394_GET_FA_CMD_PRIV(cmd);
ASSERT(fa_priv->type < S1394_FA_NTYPES);
cmd->cmd_addr -= hal->hal_fa[fa_priv->type].fal_descr->fd_conv_base;
cmd->completion_callback = fa_priv->completion_callback;
cmd->cmd_callback_arg = fa_priv->callback_arg;
}
/*
* s1394_fa_check_restore_cmd()
* if a command has FA extension, do s1394_fa_restore_cmd()
*/
void
s1394_fa_check_restore_cmd(s1394_hal_t *hal, cmd1394_cmd_t *cmd)
{
s1394_cmd_priv_t *s_priv = S1394_GET_CMD_PRIV(cmd);
if (s_priv->cmd_ext_type == S1394_CMD_EXT_FA) {
s1394_fa_restore_cmd(hal, cmd);
}
}
/*
* s1394_fa_completion_cb()
* FA completion callback: restore command and call original callback
*/
static void
s1394_fa_completion_cb(cmd1394_cmd_t *cmd)
{
s1394_hal_t *hal = cmd->cmd_callback_arg;
TNF_PROBE_0_DEBUG(s1394_fa_completion_cb_enter,
S1394_TNF_SL_FA_STACK, "");
s1394_fa_restore_cmd(hal, cmd);
if (cmd->completion_callback) {
cmd->completion_callback(cmd);
}
TNF_PROBE_0_DEBUG(s1394_fa_completion_cb_exit,
S1394_TNF_SL_FA_STACK, "");
}
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