usr/src/uts/sun4/io/px/px_msi.h

   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 2009 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _SYS_PX_MSI_H
  27 #define _SYS_PX_MSI_H
  28
  29 #ifdef  __cplusplus
  30 extern "C" {
  31 #endif
  32
  33 /*
  34  * MSI data structure.
  35  */
  36 typedef struct px_msi {
  37         dev_info_t      *msi_dip;       /* MSI consumer dip */
  38         int             msi_inum;       /* INUM for this device */
  39         uint_t          msi_state;      /* MSI alloc state */
  40         msinum_t        msi_msinum;     /* MSI number */
  41         msiqid_t        msi_msiq_id;    /* MSIQ used */
  42 } px_msi_t;
  43
  44 #define MSI_STATE_FREE          0x1
  45 #define MSI_STATE_INUSE         0x2
  46
  47 /*
  48  * MSI soft state structure.
  49  */
  50 typedef struct px_msi_state {
  51         uint_t          msi_cnt;        /* No of MSIs */
  52         msinum_t        msi_1st_msinum; /* First MSI number */
  53         uint_t          msi_data_mask;  /* MSI data mask */
  54         uint_t          msi_data_width; /* MSI data width */
  55         uint64_t        msi_addr32;     /* MSI 32 address */
  56         uint64_t        msi_addr32_len; /* MSI 32 length */
  57         uint64_t        msi_addr64;     /* MSI 64 address */
  58         uint64_t        msi_addr64_len; /* MSI 64 length */
  59
  60         px_msi_t        *msi_p;         /* Pointer to MSIs array */
  61         kmutex_t        msi_mutex;      /* Mutex for MSI alloc/free */
  62         uint_t          msi_type;       /* MSI or MSI-X */
  63         boolean_t       msi_mem_flg;    /* TRUE if driver allocates memory */
  64
  65         ddi_irm_pool_t  *msi_pool_p;    /* IRM Pool */
  66 } px_msi_state_t;
  67
  68 /*
  69  * px_msi_ranges
  70  */
  71 typedef struct px_msi_ranges {
  72         int     msi_no;
  73         int     no_msis;
  74 } px_msi_ranges_t;
  75
  76 /*
  77  * px_msi_address_ranges
  78  */
  79 typedef struct px_msi_address_ranges {
  80         uint32_t        msi_addr32_hi;
  81         uint32_t        msi_addr32_lo;
  82         uint32_t        msi_addr32_len;
  83         uint32_t        msi_addr64_hi;
  84         uint32_t        msi_addr64_lo;
  85         uint32_t        msi_addr64_len;
  86 } px_msi_address_ranges_t;
  87
  88 #define PX_MSI_WIDTH                    16
  89 #define PX_MSIX_WIDTH                   32
  90
  91 extern  int     px_msi_attach(px_t *px_p);
  92 extern  void    px_msi_detach(px_t *px_p);
  93
  94 extern  int     px_msi_alloc(px_t *px_p, dev_info_t *rdip, int type, int inum,
  95                     int msi_count, int flag, int *actual_msi_count_p);
  96 extern  int     px_msi_free(px_t *px_p, dev_info_t *rdip, int inum,
  97                     int msi_count);
  98
  99 extern  int     px_msi_get_msinum(px_t *px_p, dev_info_t *rdip,
 100                     int inum, msinum_t *msi_num_p);
 101
 102 #ifdef  __cplusplus
 103 }
 104 #endif
 105
 106 #endif  /* _SYS_PX_MSI_H */