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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _SYS_PX_DMA_H 28 #define _SYS_PX_DMA_H 29 30 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 typedef pfn_t px_iopfn_t; 37 38 #define MAKE_DMA_COOKIE(cp, address, size) \ 39 { \ 40 (cp)->dmac_notused = 0; \ 41 (cp)->dmac_type = 0; \ 42 (cp)->dmac_laddress = (address); \ 43 (cp)->dmac_size = (size); \ 44 } 45 46 #define HAS_REDZONE(mp) (((mp)->dmai_rflags & DDI_DMA_REDZONE) ? 1 : 0) 47 48 typedef struct px_dma_hdl { 49 ddi_dma_impl_t pdh_ddi_hdl; 50 ddi_dma_attr_t pdh_attr_dev; 51 } px_dma_hdl_t; 52 53 struct px_dma_impl { /* forthdebug only, keep in sync with ddi_dma_impl_t */ 54 ulong_t dmai_mapping; 55 uint_t dmai_size; 56 off_t dmai_offset; 57 uint_t dmai_minxfer; 58 uint_t dmai_burstsizes; 59 uint_t dmai_ndvmapages; 60 uint_t dmai_roffset; 61 uint_t dmai_rflags; 62 uint_t dmai_flags; 63 uint_t dmai_nwin; 64 uint_t dmai_winsize; 65 caddr_t dmai_tte; 66 void *dmai_pfnlst; 67 uint_t *dmai_pfn0; 68 void *dmai_winlst; 69 dev_info_t *dmai_rdip; 70 ddi_dma_obj_t dmai_object; 71 ddi_dma_attr_t dmai_attr_aug; 72 ddi_dma_cookie_t *dmai_cookie; 73 74 int (*dmai_fault_check)(struct ddi_dma_impl *handle); 75 void (*dmai_fault_notify)(struct ddi_dma_impl *handle); 76 int dmai_fault; 77 78 ddi_dma_attr_t dmai_attr_dev; 79 }; 80 81 /* Included in case other px-specific flags are added later. */ 82 #define PX_DMA_SYNC_DDI_FLAGS ((1 << 16) - 1) /* Look for only DDI flags */ 83 84 /* 85 * flags for overloading dmai_inuse field of the dma request 86 * structure: 87 */ 88 #define dmai_flags dmai_inuse 89 #define dmai_tte dmai_nexus_private 90 #define dmai_fdvma dmai_nexus_private 91 #define dmai_pfnlst dmai_iopte 92 #define dmai_winlst dmai_minfo 93 #define dmai_pfn0 dmai_sbi 94 #define dmai_roffset dmai_pool 95 #define MP_PFN0(mp) ((px_iopfn_t)(mp)->dmai_pfn0) 96 #define WINLST(mp) ((px_dma_win_t *)(mp)->dmai_winlst) 97 #define DEV_ATTR(mp) ((ddi_dma_attr_t *)(mp + 1)) 98 #define SET_DMAATTR(p, lo, hi, nocross, cntmax) \ 99 (p)->dma_attr_addr_lo = (lo); \ 100 (p)->dma_attr_addr_hi = (hi); \ 101 (p)->dma_attr_seg = (nocross); \ 102 (p)->dma_attr_count_max = (cntmax); 103 104 #define SET_DMAALIGN(p, align) \ 105 (p)->dma_attr_align = (align); 106 107 #define DMAI_FLAGS_INUSE 0x1 108 #define DMAI_FLAGS_BYPASSREQ 0x2 109 #define DMAI_FLAGS_PEER_ONLY 0x4 110 #define DMAI_FLAGS_NOCTX 0x8 111 #define DMAI_FLAGS_DVMA 0x10 112 #define DMAI_FLAGS_BYPASS 0x20 113 #define DMAI_FLAGS_PTP 0x40 114 #define DMAI_FLAGS_DMA (DMAI_FLAGS_BYPASS | DMAI_FLAGS_PTP) 115 #define DMAI_FLAGS_DMA_TYPE (DMAI_FLAGS_DMA | DMAI_FLAGS_DVMA) 116 #define DMAI_FLAGS_CONTEXT 0x100 117 #define DMAI_FLAGS_FASTTRACK 0x200 118 #define DMAI_FLAGS_VMEMCACHE 0x400 119 #define DMAI_FLAGS_PGPFN 0x800 120 #define DMAI_FLAGS_NOSYSLIMIT 0x1000 121 #define DMAI_FLAGS_NOFASTLIMIT 0x2000 122 #define DMAI_FLAGS_NOSYNC 0x4000 123 #define DMAI_FLAGS_PTP32 0x10000 124 #define DMAI_FLAGS_PTP64 0x20000 125 #define DMAI_FLAGS_PRESERVE (DMAI_FLAGS_PEER_ONLY | DMAI_FLAGS_BYPASSREQ | \ 126 DMAI_FLAGS_NOSYSLIMIT | DMAI_FLAGS_NOFASTLIMIT | DMAI_FLAGS_NOCTX) 127 128 #define HAS_NOFASTLIMIT(mp) ((mp)->dmai_flags & DMAI_FLAGS_NOFASTLIMIT) 129 #define HAS_NOSYSLIMIT(mp) ((mp)->dmai_flags & DMAI_FLAGS_NOSYSLIMIT) 130 #define PX_DMA_ISPEERONLY(mp) ((mp)->dmai_flags & DMAI_FLAGS_PEER_ONLY) 131 #define PX_DMA_ISPGPFN(mp) ((mp)->dmai_flags & DMAI_FLAGS_PGPFN) 132 #define PX_DMA_TYPE(mp) ((mp)->dmai_flags & DMAI_FLAGS_DMA_TYPE) 133 #define PX_DMA_ISDVMA(mp) (PX_DMA_TYPE(mp) == DMAI_FLAGS_DVMA) 134 #define PX_DMA_ISBYPASS(mp) (PX_DMA_TYPE(mp) == DMAI_FLAGS_BYPASS) 135 #define PX_DMA_ISPTP(mp) (PX_DMA_TYPE(mp) == DMAI_FLAGS_PTP) 136 #define PX_DMA_ISPTP32(mp) ((mp)->dmai_flags & DMAI_FLAGS_PTP32) 137 #define PX_DMA_ISPTP64(mp) ((mp)->dmai_flags & DMAI_FLAGS_PTP64) 138 #define PX_DMA_CANFAST(mp) (((mp)->dmai_ndvmapages + HAS_REDZONE(mp) \ 139 <= px_dvma_page_cache_clustsz) && HAS_NOFASTLIMIT(mp)) 140 #define PX_DMA_WINNPGS(mp) MMU_BTOP((mp)->dmai_winsize) 141 #define PX_DMA_CANCACHE(mp) (!HAS_REDZONE(mp) && \ 142 (PX_DMA_WINNPGS(mp) == 1) && HAS_NOSYSLIMIT(mp)) 143 144 #define DEV_NOFASTLIMIT(lo, hi, fastlo, fasthi, align_pg) \ 145 (((lo) <= (fastlo)) && ((hi) >= (fasthi)) && \ 146 ((align_pg) <= px_dvma_page_cache_clustsz)) 147 148 #define DEV_NOSYSLIMIT(lo, hi, syslo, syshi, align_pg) \ 149 (((lo) <= (syslo)) && ((hi) >= (syshi)) && (align_pg == 1)) 150 151 #define PX_DMA_NOCTX(rdip) (!px_use_contexts || (px_ctx_no_active_flush && \ 152 ddi_prop_exists(DDI_DEV_T_ANY, rdip, \ 153 DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "active-dma-flush"))) 154 #define PX_DMA_USECTX(mp) (!(mp->dmai_flags & DMAI_FLAGS_NOCTX)) 155 156 #define PX_DMA_BADPTP(pfn, attrp) \ 157 ((IOMMU_PTOB(pfn) < attrp->dma_attr_addr_lo) || \ 158 (IOMMU_PTOB(pfn) > attrp->dma_attr_addr_hi)) 159 #define PX_DMA_CURWIN(mp) \ 160 (((mp)->dmai_offset + (mp)->dmai_roffset) / (mp)->dmai_winsize) 161 162 #ifdef PX_DMA_PROF 163 164 /* collect fast track failure statistics */ 165 #define PX_DVMA_FASTTRAK_PROF(mp) { \ 166 if ((mp->dmai_ndvmapages + HAS_REDZONE(mp)) > px_dvma_page_cache_clustsz) \ 167 px_dvmaft_npages++; \ 168 else if (!HAS_NOFASTLIMIT(mp)) \ 169 px_dvmaft_limit++; \ 170 } 171 172 #else /* !PX_DMA_PROF */ 173 174 #define PX_DVMA_FASTTRAK_PROF(mp) 175 176 #endif /* PX_DMA_PROF */ 177 178 typedef struct px_dma_win { 179 struct px_dma_win *win_next; 180 uint32_t win_ncookies; 181 uint32_t win_curseg; 182 uint64_t win_size; 183 uint64_t win_offset; 184 /* cookie table: sizeof (ddi_dma_cookie_t) * win_ncookies */ 185 } px_dma_win_t; 186 187 /* dvma debug records */ 188 struct px_dvma_rec { 189 char *dvma_addr; 190 uint_t len; 191 ddi_dma_impl_t *mp; 192 struct px_dvma_rec *next; 193 }; 194 195 extern int px_dma_attach(px_t *px_p); 196 extern int px_dma_win(dev_info_t *dip, dev_info_t *rdip, 197 ddi_dma_handle_t handle, uint_t win, off_t *offp, 198 size_t *lenp, ddi_dma_cookie_t *cookiep, uint_t *ccountp); 199 200 extern ddi_dma_impl_t *px_dma_allocmp(dev_info_t *dip, dev_info_t *rdip, 201 int (*waitfp)(caddr_t), caddr_t arg); 202 extern void px_dma_freemp(ddi_dma_impl_t *mp); 203 extern void px_dma_freepfn(ddi_dma_impl_t *mp); 204 extern ddi_dma_impl_t *px_dma_lmts2hdl(dev_info_t *dip, dev_info_t *rdip, 205 px_mmu_t *mmu_p, ddi_dma_req_t *dmareq); 206 extern int px_dma_attr2hdl(px_t *px_p, ddi_dma_impl_t *mp); 207 extern int px_dma_type(px_t *px_p, ddi_dma_req_t *req, ddi_dma_impl_t *mp); 208 extern int px_dma_pfn(px_t *px_p, ddi_dma_req_t *req, ddi_dma_impl_t *mp); 209 extern int px_dvma_win(px_t *px_p, ddi_dma_req_t *r, ddi_dma_impl_t *mp); 210 extern void px_dma_freewin(ddi_dma_impl_t *mp); 211 extern int px_dvma_map_fast(px_mmu_t *mmu_p, ddi_dma_impl_t *mp); 212 extern int px_dvma_map(ddi_dma_impl_t *mp, ddi_dma_req_t *dmareq, 213 px_mmu_t *mmu_p); 214 extern void px_dvma_unmap(px_mmu_t *mmu_p, ddi_dma_impl_t *mp); 215 extern int px_dma_physwin(px_t *px_p, ddi_dma_req_t *dmareq, 216 ddi_dma_impl_t *mp); 217 extern int px_dvma_ctl(dev_info_t *dip, dev_info_t *rdip, 218 ddi_dma_impl_t *mp, enum ddi_dma_ctlops cmd, off_t *offp, 219 size_t *lenp, caddr_t *objp, uint_t cache_flags); 220 extern int px_dma_ctl(dev_info_t *dip, dev_info_t *rdip, 221 ddi_dma_impl_t *mp, enum ddi_dma_ctlops cmd, off_t *offp, 222 size_t *lenp, caddr_t *objp, uint_t cache_flags); 223 224 #define PX_GET_MP_NCOOKIES(mp) ((mp)->dmai_ncookies) 225 #define PX_SET_MP_NCOOKIES(mp, nc) ((mp)->dmai_ncookies = (nc)) 226 #define PX_GET_MP_PFN1_ADDR(mp) (((px_iopfn_t *)(mp)->dmai_pfnlst) + 1) 227 228 #define PX_GET_MP_TTE(tte) \ 229 (((uint64_t)(tte) >> 5) << (32 + 5) | ((uint32_t)(tte)) & 0x12) 230 #define PX_SAVE_MP_TTE(mp, tte) \ 231 (mp)->dmai_tte = (caddr_t)(HI32(tte) | ((tte) & 0x12)) 232 233 #define PX_GET_MP_PFN1(mp, page_no) \ 234 (((px_iopfn_t *)(mp)->dmai_pfnlst)[page_no]) 235 #define PX_GET_MP_PFN(mp, page_no) ((mp)->dmai_ndvmapages == 1 ? \ 236 (px_iopfn_t)(mp)->dmai_pfnlst : PX_GET_MP_PFN1(mp, page_no)) 237 238 #define PX_SET_MP_PFN(mp, page_no, pfn) { \ 239 if ((mp)->dmai_ndvmapages == 1) { \ 240 ASSERT(!((page_no) || (mp)->dmai_pfnlst)); \ 241 (mp)->dmai_pfnlst = (void *)(pfn); \ 242 } else \ 243 ((px_iopfn_t *)(mp)->dmai_pfnlst)[page_no] = \ 244 (px_iopfn_t)(pfn); \ 245 } 246 #define PX_SET_MP_PFN1(mp, page_no, pfn) { \ 247 ((px_iopfn_t *)(mp)->dmai_pfnlst)[page_no] = (pfn); \ 248 } 249 250 extern int px_dma_freehdl(dev_info_t *dip, dev_info_t *rdip, 251 ddi_dma_handle_t handle); 252 253 #if defined(DEBUG) 254 extern void px_dump_dma_handle(uint64_t flag, dev_info_t *dip, 255 ddi_dma_impl_t *hp); 256 #else 257 #define px_dump_dma_handle(flag, dip, hp) 258 #endif 259 260 #ifdef __cplusplus 261 } 262 #endif 263 264 #endif /* _SYS_PX_DMA_H */ 265