usr/src/uts/sun/io/dada/impl/dcd_resource.c

   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 /*
  23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <sys/dada/dada.h>
  30 #include <sys/vtrace.h>
  31
  32 #define A_TO_TRAN(ap)   ((ap)->a_hba_tran)
  33 #define P_TO_TRAN(pkt)  ((pkt)->pkt_address.a_hba_tran)
  34 #define P_TO_ADDR(pkt)  (&((pkt)->pkt_address))
  35
  36 /*
  37  * Callback id
  38  */
  39 uintptr_t       dcd_callback_id = 0L;
  40
  41 /* For i_ddi_mem_alloc() in dcd_alloc_consistent_buf() */
  42 static ddi_dma_attr_t standard_dma_attr = {
  43         DMA_ATTR_V0,    /* version number */
  44         0x0,            /* lowest usable address */
  45         0xFFFFFFFFull,  /* high DMA address range */
  46         0xFFFFFFFFull,  /* DMA counter register */
  47         1,              /* DMA address alignment */
  48         1,              /* DMA burstsizes */
  49         1,              /* min effective DMA size */
  50         0xFFFFFFFFull,  /* max DMA xfer size */
  51         0xFFFFFFFFull,  /* segment boundary */
  52         1,              /* s/g list length */
  53         512,            /* granularity of device */
  54         0,              /* DMA transfer flags */
  55 };
  56
  57 struct buf *
  58 dcd_alloc_consistent_buf(struct dcd_address *ap,
  59         struct buf *in_bp, size_t datalen, uint_t bflags,
  60         int (*callback)(caddr_t), caddr_t callback_arg)
  61 {
  62
  63         dev_info_t      *pdip;
  64         struct  buf     *bp;
  65         int             kmflag;
  66         size_t          rlen;
  67
  68
  69         if (!in_bp) {
  70                 kmflag = (callback == SLEEP_FUNC) ? KM_SLEEP: KM_NOSLEEP;
  71                 if ((bp = getrbuf(kmflag)) == NULL) {
  72                         goto no_resource;
  73                 }
  74         } else
  75                 bp = in_bp;
  76
  77         bp->b_un.b_addr = 0;
  78         if (datalen) {
  79                 pdip = (A_TO_TRAN(ap))->tran_hba_dip;
  80                 if (i_ddi_mem_alloc(pdip, &standard_dma_attr, datalen, 0,
  81                     0, NULL, &bp->b_un.b_addr, &rlen, NULL) != DDI_SUCCESS) {
  82                         if (!in_bp)
  83                                 freerbuf(bp);
  84                         goto no_resource;
  85                 }
  86                 bp->b_flags |= bflags;
  87         }
  88         bp->b_bcount = datalen;
  89         bp->b_resid = 0;
  90
  91         return (bp);
  92
  93 no_resource:
  94         if (callback != NULL_FUNC && callback != SLEEP_FUNC) {
  95                 ddi_set_callback(callback, callback_arg, &dcd_callback_id);
  96         }
  97
  98         return (NULL);
  99 }
 100
 101
 102 void
 103 dcd_free_consistent_buf(struct buf *bp)
 104 {
 105
 106         if (!bp)
 107                 return;
 108
 109         if (bp->b_un.b_addr)
 110                 i_ddi_mem_free((caddr_t)bp->b_un.b_addr, NULL);
 111         freerbuf(bp);
 112         if (dcd_callback_id != 0L) {
 113                 ddi_run_callback(&dcd_callback_id);
 114         }
 115
 116 }
 117
 118 struct dcd_pkt *
 119 dcd_init_pkt(struct dcd_address *ap, struct dcd_pkt *in_pktp,
 120         struct buf *bp, int cmdlen, int statuslen, int pplen,
 121         int flags, int (*callback)(caddr_t), caddr_t callback_arg)
 122 {
 123         struct dcd_pkt *pktp;
 124         dcd_hba_tran_t  *tranp = ap->a_hba_tran;
 125         int             (*func)(caddr_t);
 126
 127 #if defined(__i386) || defined(__amd64)
 128         if (flags & PKT_CONSISTENT_OLD) {
 129                 flags &= ~PKT_CONSISTENT_OLD;
 130                 flags |= PKT_CONSISTENT;
 131         }
 132 #endif  /* __i386 || __amd64 */
 133
 134         func = (callback == SLEEP_FUNC) ? SLEEP_FUNC : NULL_FUNC;
 135
 136         pktp = (*tranp->tran_init_pkt)(ap, in_pktp, bp, cmdlen,
 137                 statuslen, pplen, flags, func, NULL);
 138
 139         if (pktp == NULL) {
 140                 if (callback != NULL_FUNC && callback != SLEEP_FUNC) {
 141                         ddi_set_callback(callback, callback_arg,
 142                                 &dcd_callback_id);
 143                 }
 144         }
 145
 146         return (pktp);
 147 }
 148
 149 void
 150 dcd_destroy_pkt(struct dcd_pkt *pkt)
 151 {
 152
 153         struct dcd_address *ap = P_TO_ADDR(pkt);
 154
 155         (*A_TO_TRAN(ap)->tran_destroy_pkt)(ap, pkt);
 156
 157         if (dcd_callback_id != 0L) {
 158                 ddi_run_callback(&dcd_callback_id);
 159         }
 160
 161 }
 162
 163 struct dcd_pkt *
 164 dcd_resalloc(struct dcd_address *ap, int cmdlen, int statuslen,
 165         ataopaque_t dmatoken, int (*callback)())
 166 {
 167
 168         register struct dcd_pkt *pkt;
 169         register dcd_hba_tran_t *tranp = ap->a_hba_tran;
 170         register int            (*func)(caddr_t);
 171
 172
 173         func = (callback == SLEEP_FUNC) ? SLEEP_FUNC: NULL_FUNC;
 174         pkt = (*tranp->tran_init_pkt) (ap, NULL, (struct buf *)dmatoken,
 175                 cmdlen, statuslen, 0, 0, func, NULL);
 176
 177         if (pkt == NULL) {
 178                 if (callback != NULL_FUNC && callback != SLEEP_FUNC) {
 179                         ddi_set_callback(callback, NULL, &dcd_callback_id);
 180                 }
 181         }
 182         return (pkt);
 183 }
 184
 185
 186 struct dcd_pkt *
 187 dcd_pktalloc(struct dcd_address *ap, int cmdlen, int statuslen,
 188         int (*callback)())
 189 {
 190
 191         struct dcd_pkt  *pkt;
 192         struct dcd_hba_tran     *tran = ap->a_hba_tran;
 193         register int            (*func)(caddr_t);
 194
 195
 196         func = (callback == SLEEP_FUNC) ? SLEEP_FUNC: NULL_FUNC;
 197
 198         pkt = (*tran->tran_init_pkt) (ap, NULL, NULL, cmdlen, statuslen,
 199                 0, 0, func, NULL);
 200         if (pkt == NULL) {
 201                 if (callback != NULL_FUNC && callback != SLEEP_FUNC) {
 202                         ddi_set_callback(callback, NULL, &dcd_callback_id);
 203                 }
 204         }
 205         return (pkt);
 206 }
 207
 208
 209 struct dcd_pkt *
 210 dcd_dmaget(struct dcd_pkt *pkt, ataopaque_t dmatoken, int (*callback)())
 211 {
 212
 213         struct dcd_pkt *new_pkt;
 214         register        int     (*func)(caddr_t);
 215
 216         func = (callback == SLEEP_FUNC) ? SLEEP_FUNC : NULL_FUNC;
 217
 218         new_pkt = (*P_TO_TRAN(pkt)->tran_init_pkt) (&pkt->pkt_address,
 219                 pkt, (struct buf *)dmatoken, 0, 0, 0, 0, func, NULL);
 220
 221         ASSERT(new_pkt == pkt || new_pkt == NULL);
 222         if (new_pkt == NULL) {
 223                 if (callback != NULL_FUNC && callback != SLEEP_FUNC) {
 224                         ddi_set_callback(callback, NULL, &dcd_callback_id);
 225                 }
 226         }
 227
 228         return (pkt);
 229 }
 230
 231
 232 /*
 233  * Generic Resource Allocation Routines
 234  */
 235
 236 void
 237 dcd_dmafree(struct dcd_pkt *pkt)
 238 {
 239
 240         register struct dcd_address *ap = P_TO_ADDR(pkt);
 241
 242         (*A_TO_TRAN(ap)->tran_dmafree)(ap, pkt);
 243
 244         if (dcd_callback_id != 0L) {
 245                 ddi_run_callback(&dcd_callback_id);
 246         }
 247
 248 }
 249
 250 void
 251 dcd_sync_pkt(struct dcd_pkt *pkt)
 252 {
 253         register struct dcd_address *ap = P_TO_ADDR(pkt);
 254
 255         (*A_TO_TRAN(ap)->tran_sync_pkt) (ap, pkt);
 256 }
 257
 258 void
 259 dcd_resfree(struct dcd_pkt *pkt)
 260 {
 261
 262         register struct dcd_address *ap = P_TO_ADDR(pkt);
 263
 264         (*A_TO_TRAN(ap)->tran_destroy_pkt)(ap, pkt);
 265
 266         if (dcd_callback_id != 0L) {
 267                 ddi_run_callback(&dcd_callback_id);
 268         }
 269 }