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_PROM_PLAT_H 27 #define _SYS_PROM_PLAT_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #include <sys/feature_tests.h> 32 #include <sys/cpuvar.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 #if !defined(_LONGLONG_TYPE) 39 #error "This header won't work without long long support" 40 #endif 41 42 /* 43 * This file contains external platform-specific promif interface definitions. 44 * There may be none. This file is included by reference in <sys/promif.h> 45 * 46 * This version of the file is for the IEEE 1275-1994 compliant sun4u prom. 47 */ 48 49 /* 50 * Memory allocation plus memory/mmu interfaces: 51 * 52 * Routines with fine-grained memory and MMU control are platform-dependent. 53 * 54 * MMU node virtualized "mode" arguments and results for Spitfire MMU: 55 * 56 * The default virtualized "mode" for client program mappings created 57 * by the firmware is as follows: 58 * 59 * G (global) Clear 60 * L (locked) Clear 61 * W (write) Set 62 * R (read - soft) Set (Prom is not required to implement soft bits) 63 * X (exec - soft) Set (Prom is not required to implement soft bits) 64 * CV,CP (Cacheable) Set if memory page, Clear if IO page 65 * E (side effects) Clear if memory page; Set if IO page 66 * IE (Invert endian.) Clear 67 * 68 * The following fields are initialized as follows in the TTE-data for any 69 * mappings created by the firmware on behalf of the client program: 70 * 71 * P (Priviledged) Set 72 * V (Valid) Set 73 * NFO (No Fault Only) Clear 74 * Context 0 75 * Soft bits < private to the firmware implementation > 76 * 77 * Page size of Prom mappings are typically 8k, "modify" cannot change 78 * page sizes. Mappings created by "map" are 8k pages. 79 * 80 * If the virtualized "mode" is -1, the defaults as shown above are used, 81 * otherwise the virtualized "mode" is set (and returned) based on the 82 * following virtualized "mode" abstractions. The mmu node "translations" 83 * property contains the actual tte-data, not the virtualized "mode". 84 * 85 * Note that client programs may not create locked mappings by setting 86 * the LOCKED bit. There are Spitfire specific client interfaces to create 87 * and remove locked mappings. (SUNW,{i,d}tlb-load). 88 * The LOCKED bit is defined here since it may be returned by the 89 * "translate" method. 90 * 91 * The PROM is not required to implement the Read and eXecute soft bits, 92 * and is not required to track them for the client program. They may be 93 * set on calls to "map" and "modfify" and may be ignored by the firmware, 94 * and are not necessarily returned from "translate". 95 * 96 * The TTE soft bits are private to the firmware. No assumptions may 97 * be made regarding the contents of the TTE soft bits. 98 * 99 * Changing a mapping from cacheable to non-cacheable implies a flush 100 * or invalidate operation, if necessary. 101 * 102 * NB: The "map" MMU node method should NOT be used to create IO device 103 * mappings. The correct way to do this is to call the device's parent 104 * "map-in" method using the CALL-METHOD client interface service. 105 */ 106 107 #define PROM_MMU_MODE_DEFAULT ((int)-1) /* Default "mode", see above */ 108 109 /* 110 * NB: These are not implemented in PROM version P1.0 ... 111 */ 112 #define PROM_MMU_MODE_WRITE 0x0001 /* Translation is Writable */ 113 #define PROM_MMU_MODE_READ 0x0002 /* Soft: Readable, See above */ 114 #define PROM_MMU_MODE_EXEC 0x0004 /* Soft: eXecutable, See above */ 115 #define PROM_MMU_MODE_RWX_MASK 0x0007 /* Mask for R-W-X bits */ 116 117 #define PROM_MMU_MODE_LOCKED 0x0010 /* Read-only: Locked; see above */ 118 #define PROM_MMU_MODE_CACHED 0x0020 /* Set means both CV,CP bits */ 119 #define PROM_MMU_MODE_EFFECTS 0x0040 /* side Effects bit in MMU */ 120 #define PROM_MMU_MODE_GLOBAL 0x0080 /* Global bit */ 121 #define PROM_MMU_MODE_INVERT 0x0100 /* Invert Endianness */ 122 123 /* 124 * resource allocation group: OBP only. (mapping functions are platform 125 * dependent because they use physical address arguments.) 126 */ 127 extern caddr_t prom_map(caddr_t virthint, 128 unsigned long long physaddr, uint_t size); 129 130 /* 131 * prom_alloc is platform dependent and has historical semantics 132 * associated with the align argument and the return value. 133 * prom_malloc is the generic memory allocator. 134 */ 135 extern caddr_t prom_malloc(caddr_t virt, size_t size, uint_t align); 136 137 extern caddr_t prom_allocate_virt(uint_t align, size_t size); 138 extern caddr_t prom_claim_virt(size_t size, caddr_t virt); 139 extern void prom_free_virt(size_t size, caddr_t virt); 140 141 extern int prom_allocate_phys(size_t size, uint_t align, 142 unsigned long long *physaddr); 143 extern int prom_claim_phys(size_t size, 144 unsigned long long physaddr); 145 extern void prom_free_phys(size_t size, 146 unsigned long long physaddr); 147 148 extern int prom_map_phys(int mode, size_t size, caddr_t virt, 149 unsigned long long physaddr); 150 extern void prom_unmap_phys(size_t size, caddr_t virt); 151 extern void prom_unmap_virt(size_t size, caddr_t virt); 152 153 /* 154 * prom_retain allocates or returns retained physical memory 155 * identified by the arguments of name string "id", "size" and "align". 156 */ 157 extern int prom_retain(char *id, size_t size, uint_t align, 158 unsigned long long *physaddr); 159 160 /* 161 * prom_translate_virt returns the physical address and virtualized "mode" 162 * for the given virtual address. After the call, if *valid is non-zero, 163 * a mapping to 'virt' exists and the physical address and virtualized 164 * "mode" were returned to the caller. 165 */ 166 extern int prom_translate_virt(caddr_t virt, int *valid, 167 unsigned long long *physaddr, int *mode); 168 169 /* 170 * prom_modify_mapping changes the "mode" of an existing mapping or 171 * repeated mappings. virt is the virtual address whose "mode" is to 172 * be changed; size is some multiple of the fundamental pagesize. 173 * This method cannot be used to change the pagesize of an MMU mapping, 174 * nor can it be used to Lock a translation into the i or d tlb. 175 */ 176 extern int prom_modify_mapping(caddr_t virt, size_t size, int mode); 177 178 /* 179 * Client interfaces for managing the {i,d}tlb handoff to client programs. 180 */ 181 extern int prom_itlb_load(int index, 182 unsigned long long tte_data, caddr_t virt); 183 184 extern int prom_dtlb_load(int index, 185 unsigned long long tte_data, caddr_t virt); 186 187 /* 188 * Administrative group: OBP only and SMCC platform specific. 189 * XXX: IDPROM related stuff should be replaced with specific data-oriented 190 * XXX: functions. 191 */ 192 193 extern int prom_get_unum(int syn_code, unsigned long long physaddr, 194 char *buf, uint_t buflen, int *ustrlen); 195 extern int prom_getidprom(caddr_t addr, int size); 196 extern int prom_getmacaddr(ihandle_t hd, caddr_t ea); 197 198 /* 199 * CPU Control Group: MP's only. 200 */ 201 extern int prom_startcpu(pnode_t node, caddr_t pc, int arg); 202 extern int prom_startcpu_bycpuid(int cpuid, caddr_t pc, int arg); 203 extern int prom_stopcpu_bycpuid(int); 204 extern void promsafe_pause_cpus(void); 205 extern void promsafe_xc_attention(cpuset_t cpuset); 206 207 /* 208 * Set trap table 209 */ 210 extern void prom_set_mmfsa_traptable(void *tba_addr, 211 uint64_t mmfsa_ra); 212 /* 213 * Power-off 214 */ 215 extern void prom_power_off(void); 216 217 /* 218 * sun4v API versioning group 219 */ 220 extern uint64_t prom_set_sun4v_api_version(uint64_t api_group, 221 uint64_t major, uint64_t minor, 222 uint64_t *supported_minor); 223 extern uint64_t prom_get_sun4v_api_version(uint64_t api_group, 224 uint64_t *major, uint64_t *minor); 225 226 227 /* 228 * The client program implementation is required to provide a wrapper 229 * to the client handler, for the 32 bit client program to 64 bit cell-sized 230 * client interface handler (switch stack, etc.). This function is not 231 * to be used externally! 232 */ 233 234 extern int client_handler(void *cif_handler, void *arg_array); 235 236 /* 237 * The 'format' of the "translations" property in the 'mmu' node ... 238 */ 239 240 struct translation { 241 uint32_t virt_hi; /* upper 32 bits of vaddr */ 242 uint32_t virt_lo; /* lower 32 bits of vaddr */ 243 uint32_t size_hi; /* upper 32 bits of size in bytes */ 244 uint32_t size_lo; /* lower 32 bits of size in bytes */ 245 uint32_t tte_hi; /* higher 32 bites of tte */ 246 uint32_t tte_lo; /* lower 32 bits of tte */ 247 }; 248 249 #ifdef __cplusplus 250 } 251 #endif 252 253 #endif /* _SYS_PROM_PLAT_H */ 254