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_DMA_H 27 #define _SYS_PX_DMA_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 typedef pfn_t px_iopfn_t; 36 37 #define MAKE_DMA_COOKIE(cp, address, size) \ 38 { \ 39 (cp)->dmac_notused = 0; \ 40 (cp)->dmac_type = 0; \ 41 (cp)->dmac_laddress = (address); \ 42 (cp)->dmac_size = (size); \ 43 } 44 45 #define PX_HAS_REDZONE(mp) \ 46 (((mp)->dmai_flags & PX_DMAI_FLAGS_REDZONE) ? 1 : 0) 47 #define PX_MAP_BUFZONE(mp) \ 48 (((mp)->dmai_flags & PX_DMAI_FLAGS_MAP_BUFZONE) ? 1 :0) 49 50 typedef struct px_dma_hdl { 51 ddi_dma_impl_t pdh_ddi_hdl; 52 ddi_dma_attr_t pdh_attr_dev; 53 } px_dma_hdl_t; 54 55 struct px_dma_impl { /* forthdebug only, keep in sync with ddi_dma_impl_t */ 56 ulong_t dmai_mapping; 57 uint_t dmai_size; 58 off_t dmai_offset; 59 uint_t dmai_minxfer; 60 uint_t dmai_burstsizes; 61 uint_t dmai_ndvmapages; 62 uint_t dmai_roffset; 63 uint_t dmai_rflags; 64 uint_t dmai_flags; 65 uint_t dmai_nwin; 66 uint_t dmai_winsize; 67 caddr_t dmai_tte; 68 void *dmai_pfnlst; 69 uint_t *dmai_pfn0; 70 void *dmai_winlst; 71 dev_info_t *dmai_rdip; 72 ddi_dma_obj_t dmai_object; 73 ddi_dma_attr_t dmai_attr_aug; 74 ddi_dma_cookie_t *dmai_cookie; 75 76 int (*dmai_fault_check)(struct ddi_dma_impl *handle); 77 void (*dmai_fault_notify)(struct ddi_dma_impl *handle); 78 int dmai_fault; 79 80 ddi_dma_attr_t dmai_attr_dev; 81 }; 82 83 /* Included in case other px-specific flags are added later. */ 84 #define PX_DMA_SYNC_DDI_FLAGS ((1 << 16) - 1) /* Look for only DDI flags */ 85 86 /* 87 * flags for overloading dmai_inuse field of the dma request 88 * structure: 89 */ 90 #define dmai_flags dmai_inuse 91 #define dmai_tte dmai_nexus_private 92 #define dmai_fdvma dmai_nexus_private 93 #define dmai_pfnlst dmai_iopte 94 #define dmai_winlst dmai_minfo 95 #define dmai_pfn0 dmai_sbi 96 #define dmai_roffset dmai_pool 97 #define PX_MP_PFN0(mp) ((px_iopfn_t)(mp)->dmai_pfn0) 98 #define PX_WINLST(mp) ((px_dma_win_t *)(mp)->dmai_winlst) 99 #define PX_DEV_ATTR(mp) ((ddi_dma_attr_t *)(mp + 1)) 100 #define SET_DMAATTR(p, lo, hi, nocross, cntmax) \ 101 (p)->dma_attr_addr_lo = (lo); \ 102 (p)->dma_attr_addr_hi = (hi); \ 103 (p)->dma_attr_seg = (nocross); \ 104 (p)->dma_attr_count_max = (cntmax); 105 106 #define SET_DMAALIGN(p, align) \ 107 (p)->dma_attr_align = (align); 108 109 #define PX_DMAI_FLAGS_INUSE 0x1 110 #define PX_DMAI_FLAGS_BYPASSREQ 0x2 111 #define PX_DMAI_FLAGS_PEER_ONLY 0x4 112 #define PX_DMAI_FLAGS_NOCTX 0x8 113 #define PX_DMAI_FLAGS_DVMA 0x10 114 #define PX_DMAI_FLAGS_BYPASS 0x20 115 #define PX_DMAI_FLAGS_PTP 0x40 116 #define PX_DMAI_FLAGS_DMA (PX_DMAI_FLAGS_BYPASS | PX_DMAI_FLAGS_PTP) 117 #define PX_DMAI_FLAGS_DMA_TYPE (PX_DMAI_FLAGS_DMA | PX_DMAI_FLAGS_DVMA) 118 #define PX_DMAI_FLAGS_CONTEXT 0x100 119 #define PX_DMAI_FLAGS_FASTTRACK 0x200 120 #define PX_DMAI_FLAGS_VMEMCACHE 0x400 121 #define PX_DMAI_FLAGS_PGPFN 0x800 122 #define PX_DMAI_FLAGS_NOSYSLIMIT 0x1000 123 #define PX_DMAI_FLAGS_NOFASTLIMIT 0x2000 124 #define PX_DMAI_FLAGS_NOSYNC 0x4000 125 #define PX_DMAI_FLAGS_PTP32 0x10000 126 #define PX_DMAI_FLAGS_PTP64 0x20000 127 /* 128 * #define PX_DMAI_FLAGS_MAP_BUFZONE 0x40000 129 * See pcie_impl.h 130 */ 131 #define PX_DMAI_FLAGS_REDZONE 0x80000 132 #define PX_DMAI_FLAGS_PRESERVE (PX_DMAI_FLAGS_PEER_ONLY | \ 133 PX_DMAI_FLAGS_BYPASSREQ | PX_DMAI_FLAGS_NOSYSLIMIT | \ 134 PX_DMAI_FLAGS_NOFASTLIMIT | PX_DMAI_FLAGS_NOCTX | \ 135 PX_DMAI_FLAGS_MAP_BUFZONE | PX_DMAI_FLAGS_REDZONE) 136 137 #define PX_HAS_NOFASTLIMIT(mp) ((mp)->dmai_flags & PX_DMAI_FLAGS_NOFASTLIMIT) 138 #define PX_HAS_NOSYSLIMIT(mp) ((mp)->dmai_flags & PX_DMAI_FLAGS_NOSYSLIMIT) 139 #define PX_DMA_ISPEERONLY(mp) ((mp)->dmai_flags & PX_DMAI_FLAGS_PEER_ONLY) 140 #define PX_DMA_ISPGPFN(mp) ((mp)->dmai_flags & PX_DMAI_FLAGS_PGPFN) 141 #define PX_DMA_TYPE(mp) ((mp)->dmai_flags & PX_DMAI_FLAGS_DMA_TYPE) 142 #define PX_DMA_ISDVMA(mp) (PX_DMA_TYPE(mp) == PX_DMAI_FLAGS_DVMA) 143 #define PX_DMA_ISBYPASS(mp) (PX_DMA_TYPE(mp) == PX_DMAI_FLAGS_BYPASS) 144 #define PX_DMA_ISPTP(mp) (PX_DMA_TYPE(mp) == PX_DMAI_FLAGS_PTP) 145 #define PX_DMA_ISPTP32(mp) ((mp)->dmai_flags & PX_DMAI_FLAGS_PTP32) 146 #define PX_DMA_ISPTP64(mp) ((mp)->dmai_flags & PX_DMAI_FLAGS_PTP64) 147 #define PX_DMA_CANFAST(mp) (((mp)->dmai_ndvmapages + PX_HAS_REDZONE(mp) \ 148 <= px_dvma_page_cache_clustsz) && PX_HAS_NOFASTLIMIT(mp)) 149 #define PX_DMA_WINNPGS(mp) MMU_BTOP((mp)->dmai_winsize) 150 #define PX_DMA_CANCACHE(mp) (!PX_HAS_REDZONE(mp) && \ 151 (PX_DMA_WINNPGS(mp) == 1) && PX_HAS_NOSYSLIMIT(mp)) 152 153 #define PX_DEV_NOFASTLIMIT(lo, hi, fastlo, fasthi, align_pg) \ 154 (((lo) <= (fastlo)) && ((hi) >= (fasthi)) && \ 155 ((align_pg) <= px_dvma_page_cache_clustsz)) 156 157 #define PX_DEV_NOSYSLIMIT(lo, hi, syslo, syshi, align_pg) \ 158 (((lo) <= (syslo)) && ((hi) >= (syshi)) && (align_pg == 1)) 159 160 #define PX_DMA_NOCTX(rdip) (!px_use_contexts || (px_ctx_no_active_flush && \ 161 ddi_prop_exists(DDI_DEV_T_ANY, rdip, \ 162 DDI_PROP_DONTPASS | DDI_PROP_NOTPROM, "active-dma-flush"))) 163 #define PX_DMA_USECTX(mp) (!(mp->dmai_flags & DMAI_FLAGS_NOCTX)) 164 165 #define PX_DMA_BADPTP(pfn, attrp) \ 166 ((IOMMU_PTOB(pfn) < attrp->dma_attr_addr_lo) || \ 167 (IOMMU_PTOB(pfn) > attrp->dma_attr_addr_hi)) 168 #define PX_DMA_CURWIN(mp) \ 169 (((mp)->dmai_offset + (mp)->dmai_roffset) / (mp)->dmai_winsize) 170 171 #ifdef PX_DMA_PROF 172 173 /* collect fast track failure statistics */ 174 #define PX_DVMA_FASTTRAK_PROF(mp) { \ 175 if ((mp->dmai_ndvmapages + PX_HAS_REDZONE(mp)) > px_dvma_page_cache_clustsz) \ 176 px_dvmaft_npages++; \ 177 else if (!PX_HAS_NOFASTLIMIT(mp)) \ 178 px_dvmaft_limit++; \ 179 } 180 181 #else /* !PX_DMA_PROF */ 182 183 #define PX_DVMA_FASTTRAK_PROF(mp) 184 185 #endif /* PX_DMA_PROF */ 186 187 typedef struct px_dma_win { 188 struct px_dma_win *win_next; 189 uint32_t win_ncookies; 190 uint32_t win_curseg; 191 uint64_t win_size; 192 uint64_t win_offset; 193 /* cookie table: sizeof (ddi_dma_cookie_t) * win_ncookies */ 194 } px_dma_win_t; 195 196 /* dvma debug records */ 197 struct px_dvma_rec { 198 char *dvma_addr; 199 uint_t len; 200 ddi_dma_impl_t *mp; 201 struct px_dvma_rec *next; 202 }; 203 204 extern int px_dma_attach(px_t *px_p); 205 extern int px_dma_win(dev_info_t *dip, dev_info_t *rdip, 206 ddi_dma_handle_t handle, uint_t win, off_t *offp, 207 size_t *lenp, ddi_dma_cookie_t *cookiep, uint_t *ccountp); 208 209 extern ddi_dma_impl_t *px_dma_allocmp(dev_info_t *dip, dev_info_t *rdip, 210 int (*waitfp)(caddr_t), caddr_t arg); 211 extern void px_dma_freemp(ddi_dma_impl_t *mp); 212 extern void px_dma_freepfn(ddi_dma_impl_t *mp); 213 extern ddi_dma_impl_t *px_dma_lmts2hdl(dev_info_t *dip, dev_info_t *rdip, 214 px_mmu_t *mmu_p, ddi_dma_req_t *dmareq); 215 extern int px_dma_attr2hdl(px_t *px_p, ddi_dma_impl_t *mp); 216 extern int px_dma_type(px_t *px_p, ddi_dma_req_t *req, ddi_dma_impl_t *mp); 217 extern int px_dma_pfn(px_t *px_p, ddi_dma_req_t *req, ddi_dma_impl_t *mp); 218 extern int px_dvma_win(px_t *px_p, ddi_dma_req_t *r, ddi_dma_impl_t *mp); 219 extern void px_dma_freewin(ddi_dma_impl_t *mp); 220 extern int px_dvma_map_fast(px_mmu_t *mmu_p, ddi_dma_impl_t *mp); 221 extern int px_dvma_map(ddi_dma_impl_t *mp, ddi_dma_req_t *dmareq, 222 px_mmu_t *mmu_p); 223 extern void px_dvma_unmap(px_mmu_t *mmu_p, ddi_dma_impl_t *mp); 224 extern int px_dma_physwin(px_t *px_p, ddi_dma_req_t *dmareq, 225 ddi_dma_impl_t *mp); 226 extern int px_dvma_ctl(dev_info_t *dip, dev_info_t *rdip, 227 ddi_dma_impl_t *mp, enum ddi_dma_ctlops cmd, off_t *offp, 228 size_t *lenp, caddr_t *objp, uint_t cache_flags); 229 extern int px_dma_ctl(dev_info_t *dip, dev_info_t *rdip, 230 ddi_dma_impl_t *mp, enum ddi_dma_ctlops cmd, off_t *offp, 231 size_t *lenp, caddr_t *objp, uint_t cache_flags); 232 233 #define PX_GET_MP_NCOOKIES(mp) ((mp)->dmai_ncookies) 234 #define PX_SET_MP_NCOOKIES(mp, nc) ((mp)->dmai_ncookies = (nc)) 235 #define PX_GET_MP_PFN1_ADDR(mp) (((px_iopfn_t *)(mp)->dmai_pfnlst) + 1) 236 237 #define PX_GET_MP_TTE(tte) \ 238 (((uint64_t)(uintptr_t)(tte) >> 5) << (32 + 5) | \ 239 ((uint32_t)(uintptr_t)(tte)) & 0x16) 240 #define PX_SAVE_MP_TTE(mp, tte) \ 241 (mp)->dmai_tte = (caddr_t)((uintptr_t)HI32(tte) | ((tte) & 0x16)) 242 243 #define PX_GET_MP_PFN1(mp, page_no) \ 244 (((px_iopfn_t *)(mp)->dmai_pfnlst)[page_no]) 245 #define PX_GET_MP_PFN(mp, page_no) ((mp)->dmai_ndvmapages == 1 ? \ 246 (px_iopfn_t)(mp)->dmai_pfnlst : PX_GET_MP_PFN1(mp, page_no)) 247 248 #define PX_SET_MP_PFN(mp, page_no, pfn) { \ 249 if ((mp)->dmai_ndvmapages == 1) { \ 250 ASSERT(!((page_no) || (mp)->dmai_pfnlst)); \ 251 (mp)->dmai_pfnlst = (void *)(pfn); \ 252 } else \ 253 ((px_iopfn_t *)(mp)->dmai_pfnlst)[page_no] = \ 254 (px_iopfn_t)(pfn); \ 255 } 256 #define PX_SET_MP_PFN1(mp, page_no, pfn) { \ 257 ((px_iopfn_t *)(mp)->dmai_pfnlst)[page_no] = (pfn); \ 258 } 259 260 extern int px_dma_freehdl(dev_info_t *dip, dev_info_t *rdip, 261 ddi_dma_handle_t handle); 262 263 #if defined(DEBUG) 264 extern void px_dump_dma_handle(uint64_t flag, dev_info_t *dip, 265 ddi_dma_impl_t *hp); 266 #else 267 #define px_dump_dma_handle(flag, dip, hp) 268 #endif 269 270 #ifdef __cplusplus 271 } 272 #endif 273 274 #endif /* _SYS_PX_DMA_H */ 275