1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_PX_MSIQ_H 27 #define _SYS_PX_MSIQ_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 /* 36 * MSIQ data structure. 37 */ 38 struct px_msiq { 39 msiqid_t msiq_id; /* MSIQ ID */ 40 ushort_t msiq_state; /* MSIQ alloc state */ 41 ushort_t msiq_refcnt; /* # of MSIQ users */ 42 msiqhead_t *msiq_base_p; /* MSIQ base pointer */ 43 44 /* Fields accessed under interrupt context */ 45 msiqhead_t msiq_curr_head_index; /* MSIQ Curr head index */ 46 msiqhead_t msiq_new_head_index; /* MSIQ new head index */ 47 ushort_t msiq_recs2process; /* # of MSIQ records to process */ 48 }; 49 50 #define MSIQ_STATE_FREE 0x1 51 #define MSIQ_STATE_INUSE 0x2 52 53 /* 54 * MSIQ soft state structure. 55 */ 56 typedef struct px_msiq_state { 57 /* Available MSIQs */ 58 uint_t msiq_cnt; /* # of MSIQs */ 59 uint_t msiq_rec_cnt; /* # of records per MSIQ */ 60 msiqid_t msiq_1st_msiq_id; /* First MSIQ ID */ 61 devino_t msiq_1st_devino; /* First devino */ 62 63 /* MSIQs specific reserved for MSI/Xs */ 64 uint_t msiq_msi_qcnt; /* # of MSIQs for MSI/Xs */ 65 msiqid_t msiq_1st_msi_qid; /* First MSIQ ID for MSI/Xs */ 66 msiqid_t msiq_next_msi_qid; /* Next MSIQ index for MSI/Xs */ 67 68 /* MSIQs specific reserved for PCIe messages */ 69 uint_t msiq_msg_qcnt; /* # of MSIQs for PCIe msgs */ 70 msiqid_t msiq_1st_msg_qid; /* First MSIQ ID for PCIe msgs */ 71 msiqid_t msiq_next_msg_qid; /* Next MSIQ index for PCIe msgs */ 72 73 px_msiq_t *msiq_p; /* Pointer to MSIQs array */ 74 void *msiq_buf_p; /* Pointer to MSIQs array */ 75 kmutex_t msiq_mutex; /* Mutex for MSIQ alloc/free */ 76 } px_msiq_state_t; 77 78 /* 79 * px_msi_eq_to_devino 80 */ 81 typedef struct px_msi_eq_to_devino { 82 int msi_eq_no; 83 int no_msi_eqs; 84 int devino_no; 85 } px_msi_eq_to_devino_t; 86 87 /* 88 * Default MSIQ Configurations 89 */ 90 #define PX_DEFAULT_MSIQ_CNT 36 91 #define PX_DEFAULT_MSIQ_REC_CNT 128 92 #define PX_DEFAULT_MSIQ_1ST_MSIQ_ID 0 93 #define PX_DEFAULT_MSIQ_1ST_DEVINO 24 94 95 extern int px_msiq_attach(px_t *px_p); 96 extern void px_msiq_detach(px_t *px_p); 97 extern void px_msiq_resume(px_t *px_p); 98 99 extern int px_msiq_alloc(px_t *px_p, msiq_rec_type_t rec_type, 100 msiqid_t *msiq_id_p); 101 extern int px_msiq_free(px_t *px_p, msiqid_t msiq_id); 102 103 extern devino_t px_msiqid_to_devino(px_t *px_p, msiqid_t msiq_id); 104 extern msiqid_t px_devino_to_msiqid(px_t *px_p, devino_t devino); 105 106 #ifdef __cplusplus 107 } 108 #endif 109 110 #endif /* _SYS_PX_MSIQ_H */ 111