/* $OpenBSD: iommureg.h,v 1.21 2025/06/28 11:33:45 miod Exp $ */ /* $NetBSD: iommureg.h,v 1.6 2001/07/20 00:07:13 eeh Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratory. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)sbusreg.h 8.1 (Berkeley) 6/11/93 */ #ifndef _SPARC64_DEV_IOMMUREG_H_ #define _SPARC64_DEV_IOMMUREG_H_ /* * UltraSPARC IOMMU registers, common to both the sbus and PCI * controllers. */ /* iommu registers */ struct iommureg { volatile u_int64_t iommu_cr; /* IOMMU control register */ volatile u_int64_t iommu_tsb; /* IOMMU TSB base register */ volatile u_int64_t iommu_flush; /* IOMMU flush register */ volatile u_int64_t iommu_ctxflush; volatile u_int64_t iommu_reserved[28]; volatile u_int64_t iommu_cache_flush; volatile u_int64_t iommu_cache_invalidate; volatile u_int64_t iommu_reserved2[30]; }; /* streaming buffer registers */ struct iommu_strbuf { volatile u_int64_t strbuf_ctl; /* streaming buffer control reg */ volatile u_int64_t strbuf_pgflush; /* streaming buffer page flush */ volatile u_int64_t strbuf_flushsync;/* streaming buffer flush sync */ }; #define IOMMUREG(x) (offsetof(struct iommureg, x)) #define STRBUFREG(x) (offsetof(struct iommu_strbuf, x)) /* streaming buffer control register */ #define STRBUF_EN 0x000000000000000001LL #define STRBUF_D 0x000000000000000002LL /* control register bits */ #define IOMMUCR_TSB1K 0x000000000000000000LL /* Number of entries in IOTSB */ #define IOMMUCR_TSB2K 0x000000000000010000LL #define IOMMUCR_TSB4K 0x000000000000020000LL #define IOMMUCR_TSB8K 0x000000000000030000LL #define IOMMUCR_TSB16K 0x000000000000040000LL #define IOMMUCR_TSB32K 0x000000000000050000LL #define IOMMUCR_TSB64K 0x000000000000060000LL #define IOMMUCR_TSB128K 0x000000000000070000LL #define IOMMUCR_TSBMASK 0xfffffffffffff8ffffLL /* Mask for above */ #define IOMMUCR_8KPG 0x000000000000000000LL /* 8K iommu page size */ #define IOMMUCR_64KPG 0x000000000000000004LL /* 64K iommu page size */ #define IOMMUCR_DE 0x000000000000000002LL /* Diag enable */ #define IOMMUCR_EN 0x000000000000000001LL /* Enable IOMMU */ #define IOMMUCR_FIRE_PD 0x000000000000001000UL /* Process disable */ #define IOMMUCR_FIRE_SE 0x000000000000000400UL /* Snoop enable */ #define IOMMUCR_FIRE_CM_EN 0x000000000000000300UL /* Cache mode enable */ #define IOMMUCR_FIRE_BE 0x000000000000000002UL /* Bypass enable */ #define IOMMUCR_FIRE_TE 0x000000000000000001UL /* Translation enabled */ /* * IOMMU stuff */ #define IOTTE_V 0x8000000000000000LL /* Entry valid */ #define IOTTE_64K 0x2000000000000000LL /* 8K or 64K page? */ #define IOTTE_8K 0x0000000000000000LL #define IOTTE_STREAM 0x1000000000000000LL /* Is page streamable? */ #define IOTTE_LOCAL 0x0800000000000000LL /* Accesses to same bus segment? */ #define IOTTE_CONTEXT 0x07ff800000000000LL /* context number */ #define IOTTE_PAMASK 0x00007fffffffe000LL /* Let's assume this is correct (bits 42..13) */ #define IOTTE_C 0x0000000000000010LL /* Accesses to cacheable space */ #define IOTTE_W 0x0000000000000002LL /* Writeable */ #define IOTTE_SOFTWARE 0x0000000000001f80LL /* For software use (bits 12..7) */ /* * On sun4u each bus controller has a separate IOMMU. The IOMMU has * a TSB which must be page aligned and physically contiguous. Mappings * can be of 8K IOMMU pages or 64K IOMMU pages. We use 8K for compatibility * with the CPU's MMU. * * On sysio, psycho, and psycho+, IOMMU TSBs using 8K pages can map the * following size segments: * * VA size VA base TSB size tsbsize * -------- -------- --------- ------- * 8MB ff800000 8K 0 * 16MB ff000000 16K 1 * 32MB fe000000 32K 2 * 64MB fc000000 64K 3 * 128MB f8000000 128K 4 * 256MB f0000000 256K 5 * 512MB e0000000 512K 6 * 1GB c0000000 1MB 7 * * Unfortunately, sabres on UltraSPARC IIi and IIe processors does not use * this scheme to determine the IOVA base address. Instead, bits 31-29 are * used to check against the Target Address Space register in the IIi and * the IOMMU is used if they hit. God knows what goes on in the IIe. * */ #define IOTSB_VEND 0xffffffffU #define IOTSB_VSTART(sz) (u_int)(IOTSB_VEND << ((sz)+10+PGSHIFT)) #define IOTSB_VSIZE(sz) (u_int)(1 << ((sz)+10+PGSHIFT)) #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)) #define IOTSBSLOT(va,sz) ((u_int)(((vaddr_t)(va))-(is->is_dvmabase))>>PGSHIFT) #endif /* _SPARC64_DEV_IOMMUREG_H_ */
