px_msiq.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* 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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_PX_MSIQ_H
#define _SYS_PX_MSIQ_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
/*
* MSIQ data structure.
*/
struct px_msiq {
msiqid_t msiq_id; /* MSIQ ID */
uint_t msiq_state; /* MSIQ alloc state */
msiqhead_t msiq_base; /* MSIQ base pointer */
msiqtail_t msiq_curr; /* MSIQ Curr pointer */
};
#define MSIQ_STATE_FREE 0x1
#define MSIQ_STATE_INUSE 0x2
/*
* MSIQ soft state structure.
*/
typedef struct px_msiq_state {
/* Available MSIQs */
uint_t msiq_cnt; /* # of MSIQs */
uint_t msiq_rec_cnt; /* # of records per MSIQ */
msiqid_t msiq_1st_msiq_id; /* First MSIQ ID */
devino_t msiq_1st_devino; /* First devino */
/* MSIQs specific reserved for MSI/Xs */
uint_t msiq_msi_qcnt; /* # of MSIQs for MSI/Xs */
msiqid_t msiq_1st_msi_qid; /* First MSIQ ID for MSI/Xs */
msiqid_t msiq_next_msi_qid; /* Next MSIQ index for MSI/Xs */
/* MSIQs specific reserved for PCIe messages */
uint_t msiq_msg_qcnt; /* # of MSIQs for PCIe msgs */
msiqid_t msiq_1st_msg_qid; /* First MSIQ ID for PCIe msgs */
msiqid_t msiq_next_msg_qid; /* Next MSIQ index for PCIe msgs */
px_msiq_t *msiq_p; /* Pointer to MSIQs array */
void *msiq_buf_p; /* Pointer to MSIQs array */
kmutex_t msiq_mutex; /* Mutex for MSIQ alloc/free */
} px_msiq_state_t;
/*
* px_msi_eq_to_devino
*/
typedef struct px_msi_eq_to_devino {
int msi_eq_no;
int no_msi_eqs;
int devino_no;
} px_msi_eq_to_devino_t;
/*
* Default MSIQ Configurations
*/
#define PX_DEFAULT_MSIQ_CNT 36
#define PX_DEFAULT_MSIQ_REC_CNT 128
#define PX_DEFAULT_MSIQ_1ST_MSIQ_ID 0
#define PX_DEFAULT_MSIQ_1ST_DEVINO 24
extern int px_msiq_attach(px_t *px_p);
extern void px_msiq_detach(px_t *px_p);
extern int px_msiq_alloc(px_t *px_p, msiq_rec_type_t rec_type,
msiqid_t *msiq_id_p);
extern int px_msiq_free(px_t *px_p, msiqid_t msiq_id);
extern devino_t px_msiqid_to_devino(px_t *px_p, msiqid_t msiq_id);
extern msiqid_t px_devino_to_msiqid(px_t *px_p, devino_t devino);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_PX_MSIQ_H */