px_msiq.h revision 269473047d747f7815af570197e4ef7322d3632c
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_PX_MSIQ_H
#define _SYS_PX_MSIQ_H
#ifdef __cplusplus
extern "C" {
#endif
/*
* MSIQ data structure.
*/
struct px_msiq {
msiqid_t msiq_id; /* MSIQ ID */
ushort_t msiq_state; /* MSIQ alloc state */
ushort_t msiq_refcnt; /* # of MSIQ users */
msiqhead_t *msiq_base_p; /* MSIQ base pointer */
/* Fields accessed under interrupt context */
msiqhead_t msiq_curr_head_index; /* MSIQ Curr head index */
msiqhead_t msiq_new_head_index; /* MSIQ new head index */
ushort_t msiq_recs2process; /* # of MSIQ records to process */
};
#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 */
boolean_t msiq_redist_flag; /* Flag to redist MSIQs */
/* 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 */
/* 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 */
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;
extern int px_msiq_attach(px_t *px_p);
extern void px_msiq_detach(px_t *px_p);
extern void px_msiq_resume(px_t *px_p);
extern int px_msiq_alloc(px_t *px_p, msiq_rec_type_t rec_type,
msgcode_t msg_code, msiqid_t *msiq_id_p);
extern int px_msiq_alloc_based_on_cpuid(px_t *px_p,
msiq_rec_type_t rec_type, cpuid_t cpuid,
msiqid_t *msiq_id_p);
extern int px_msiq_free(px_t *px_p, msiqid_t msiq_id);
extern void px_msiq_redist(px_t *px_p);
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 */