1 /* $NetBSD: iommureg.h,v 1.21 2016/08/24 06:34:24 mrg Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)sbusreg.h 8.1 (Berkeley) 6/11/93 41 */ 42 43 #ifndef _SPARC64_DEV_IOMMUREG_H_ 44 #define _SPARC64_DEV_IOMMUREG_H_ 45 46 /* 47 * UltraSPARC IOMMU registers, common to both the sbus and PCI 48 * controllers. 49 */ 50 51 /* 52 * iommu registers - keep iommureg2 aligned with iommureg, so we can always 53 * use offsetof on iommureg2, regardless of the controller. 54 */ 55 struct iommureg { 56 volatile uint64_t iommu_cr; /* IOMMU control register */ 57 volatile uint64_t iommu_tsb; /* IOMMU TSB base register */ 58 volatile uint64_t iommu_flush; /* IOMMU flush register */ 59 }; 60 61 /* iommu registers for schizo and newer controllers. */ 62 struct iommureg2 { 63 volatile uint64_t iommu_cr; /* IOMMU control register */ 64 volatile uint64_t iommu_tsb; /* IOMMU TSB base register */ 65 volatile uint64_t iommu_flush; /* IOMMU flush register */ 66 volatile uint64_t iommu_ctxflush; 67 volatile uint64_t iommu_reserved[28]; 68 volatile uint64_t iommu_cache_flush; 69 volatile uint64_t iommu_cache_invalidate; 70 volatile uint64_t iommu_reserved2[30]; 71 }; 72 73 /* streaming buffer registers */ 74 struct iommu_strbuf { 75 uint64_t strbuf_ctl; /* streaming buffer control reg */ 76 uint64_t strbuf_pgflush; /* streaming buffer page flush */ 77 uint64_t strbuf_flushsync;/* streaming buffer flush sync */ 78 }; 79 80 #define IOMMUREG(x) (offsetof(struct iommureg2, x)) 81 #define STRBUFREG(x) (offsetof(struct iommu_strbuf, x)) 82 83 #define IOMMUREG_READ(is, reg) \ 84 bus_space_read_8((is)->is_bustag, \ 85 (is)->is_iommu, \ 86 IOMMUREG(reg)) 87 88 #define IOMMUREG_WRITE(is, reg, v) \ 89 bus_space_write_8((is)->is_bustag, \ 90 (is)->is_iommu, \ 91 IOMMUREG(reg), \ 92 (v)) 93 94 /* streaming buffer control register */ 95 #define STRBUF_EN 0x000000000000000001LL 96 #define STRBUF_D 0x000000000000000002LL 97 98 /* control register bits */ 99 #define IOMMUCR_TSB1K 0x000000000000000000LL /* Nummber of entries in IOTSB */ 100 #define IOMMUCR_TSB2K 0x000000000000010000LL 101 #define IOMMUCR_TSB4K 0x000000000000020000LL 102 #define IOMMUCR_TSB8K 0x000000000000030000LL 103 #define IOMMUCR_TSB16K 0x000000000000040000LL 104 #define IOMMUCR_TSB32K 0x000000000000050000LL 105 #define IOMMUCR_TSB64K 0x000000000000060000LL 106 #define IOMMUCR_TSB128K 0x000000000000070000LL 107 #define IOMMUCR_TSBMASK 0xfffffffffffff8ffffLL /* Mask for above */ 108 #define IOMMUCR_8KPG 0x000000000000000000LL /* 8K iommu page size */ 109 #define IOMMUCR_64KPG 0x000000000000000004LL /* 64K iommu page size */ 110 #define IOMMUCR_DE 0x000000000000000002LL /* Diag enable */ 111 #define IOMMUCR_EN 0x000000000000000001LL /* Enable IOMMU */ 112 113 #define IOMMUCR_FIRE_SE 0x000000000000000400LL /* Snoop enable */ 114 #define IOMMUCR_FIRE_CM_EN 0x000000000000000300LL /* Cache mode enable */ 115 #define IOMMUCR_FIRE_BE 0x000000000000000002LL /* Bypass enable */ 116 #define IOMMUCR_FIRE_TE 0x000000000000000001LL /* Translation enabled */ 117 118 /* 119 * IOMMU stuff 120 */ 121 #define IOTTE_V 0x8000000000000000LL /* Entry valid */ 122 #define IOTTE_64K 0x2000000000000000LL /* 8K or 64K page? */ 123 #define IOTTE_8K 0x0000000000000000LL 124 #define IOTTE_STREAM 0x1000000000000000LL /* Is page streamable? */ 125 #define IOTTE_LOCAL 0x0800000000000000LL /* Accesses to same bus segment? */ 126 #define IOTTE_PAMASK 0x000001ffffffe000LL /* Let's assume this is correct */ 127 #define IOTTE_C 0x0000000000000010LL /* Accesses to cacheable space */ 128 #define IOTTE_W 0x0000000000000002LL /* Writable */ 129 130 /* 131 * On sun4u each bus controller has a separate IOMMU. The IOMMU has 132 * a TSB which must be page aligned and physically contiguous. Mappings 133 * can be of 8K IOMMU pages or 64K IOMMU pages. We use 8K for compatibility 134 * with the CPU's MMU. 135 * 136 * On sysio, psycho, and psycho+, IOMMU TSBs using 8K pages can map the 137 * following size segments: 138 * 139 * VA size VA base TSB size tsbsize 140 * -------- -------- --------- ------- 141 * 8MB ff800000 8K 0 142 * 16MB ff000000 16K 1 143 * 32MB fe000000 32K 2 144 * 64MB fc000000 64K 3 145 * 128MB f8000000 128K 4 146 * 256MB f0000000 256K 5 147 * 512MB e0000000 512K 6 148 * 1GB c0000000 1MB 7 149 * 150 * Unfortunately, sabres on UltraSPARC IIi and IIe processors does not use 151 * this scheme to determine the IOVA base address. Instead, bits 31-29 are 152 * used to check against the Target Address Space register in the IIi and 153 * the IOMMU is used if they hit. God knows what goes on in the IIe. 154 * 155 */ 156 157 158 #define IOTSB_VEND (u_int)(0xffffffffffffffffLL<<PGSHIFT) 159 #define IOTSB_VSTART(sz) (u_int)(IOTSB_VEND << ((sz)+10)) 160 #define IOTSB_VSIZE(sz) (u_int)(1 << ((sz)+10+PGSHIFT)) 161 162 #define MAKEIOTTE(pa,w,c,s) (((pa)&IOTTE_PAMASK)|((w)?IOTTE_W:0)|((c)?IOTTE_C:0)|((s)?IOTTE_STREAM:0)|(IOTTE_V|IOTTE_8K)) 163 #define IOTSBSLOT(va,sz) ((u_int)(((vaddr_t)(va))-(is->is_dvmabase))>>PGSHIFT) 164 165 /* 166 * interrupt map stuff. this belongs elsewhere. 167 */ 168 169 #define INTMAP_V 0x080000000LL /* Interrupt valid (enabled) */ 170 #define INTMAP_TID 0x07c000000LL /* UPA target ID mask */ 171 #define INTMAP_TID_SHIFT 26 172 #define INTMAP_IGN 0x0000007c0LL /* Interrupt group no (sbus only). */ 173 #define INTMAP_IGN_SHIFT 6 174 #define INTMAP_INO 0x00000003fLL /* Interrupt number */ 175 #define INTMAP_INR (INTMAP_IGN|INTMAP_INO) 176 #define INTMAP_SBUSSLOT 0x000000018LL /* SBUS slot # */ 177 #define INTMAP_PCIBUS 0x000000010LL /* PCI bus number (A or B) */ 178 #define INTMAP_PCISLOT 0x00000000cLL /* PCI slot # */ 179 #define INTMAP_PCIINT 0x000000003LL /* PCI interrupt #A,#B,#C,#D */ 180 #define INTMAP_OBIO 0x000000020LL /* Onboard device */ 181 #define INTMAP_LSHIFT 11 /* Encode level in vector */ 182 #define INTLEVENCODE(x) (((x)&0x0f)<<INTMAP_LSHIFT) 183 #define INTLEV(x) (((x)>>INTMAP_LSHIFT)&0x0f) 184 #define INTVEC(x) ((x)&INTMAP_INR) 185 #define INTSLOT(x) (((x)>>3)&0x7) 186 #define INTPRI(x) ((x)&0x7) 187 #define INTINO(x) ((x)&INTMAP_INO) 188 #define INTIGN(x) ((x)&INTMAP_IGN) 189 190 #define INTPCI_MAXOBINO 0x16 /* maximum OBIO INO value for PCI */ 191 #define INTPCIOBINOX(x) ((x)&0x1f) /* OBIO ino index (for PCI machines) */ 192 #define INTPCIINOX(x) (((x)&0x1c)>>2) /* PCI ino index */ 193 194 #endif /* _SPARC64_DEV_IOMMUREG_H_ */ 195