drivers/iommu/fsl_pamu.h

   1 /*
   2  * This program is free software; you can redistribute it and/or modify
   3  * it under the terms of the GNU General Public License, version 2, as
   4  * published by the Free Software Foundation.
   5  *
   6  * This program is distributed in the hope that it will be useful,
   7  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   8  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9  * GNU General Public License for more details.
  10  *
  11  * You should have received a copy of the GNU General Public License
  12  * along with this program; if not, write to the Free Software
  13  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  14  *
  15  * Copyright (C) 2013 Freescale Semiconductor, Inc.
  16  *
  17  */
  18
  19 #ifndef __FSL_PAMU_H
  20 #define __FSL_PAMU_H
  21
  22 #include <linux/iommu.h>
  23 #include <linux/pci.h>
  24
  25 #include <asm/fsl_pamu_stash.h>
  26
  27 /* Bit Field macros
  28  *      v = bit field variable; m = mask, m##_SHIFT = shift, x = value to load
  29  */
  30 #define set_bf(v, m, x)         (v = ((v) & ~(m)) | (((x) << m##_SHIFT) & (m)))
  31 #define get_bf(v, m)            (((v) & (m)) >> m##_SHIFT)
  32
  33 /* PAMU CCSR space */
  34 #define PAMU_PGC 0x00000000     /* Allows all peripheral accesses */
  35 #define PAMU_PE 0x40000000      /* enable PAMU                    */
  36
  37 /* PAMU_OFFSET to the next pamu space in ccsr */
  38 #define PAMU_OFFSET 0x1000
  39
  40 #define PAMU_MMAP_REGS_BASE 0
  41
  42 struct pamu_mmap_regs {
  43         u32 ppbah;
  44         u32 ppbal;
  45         u32 pplah;
  46         u32 pplal;
  47         u32 spbah;
  48         u32 spbal;
  49         u32 splah;
  50         u32 splal;
  51         u32 obah;
  52         u32 obal;
  53         u32 olah;
  54         u32 olal;
  55 };
  56
  57 /* PAMU Error Registers */
  58 #define PAMU_POES1 0x0040
  59 #define PAMU_POES2 0x0044
  60 #define PAMU_POEAH 0x0048
  61 #define PAMU_POEAL 0x004C
  62 #define PAMU_AVS1  0x0050
  63 #define PAMU_AVS1_AV    0x1
  64 #define PAMU_AVS1_OTV   0x6
  65 #define PAMU_AVS1_APV   0x78
  66 #define PAMU_AVS1_WAV   0x380
  67 #define PAMU_AVS1_LAV   0x1c00
  68 #define PAMU_AVS1_GCV   0x2000
  69 #define PAMU_AVS1_PDV   0x4000
  70 #define PAMU_AV_MASK    (PAMU_AVS1_AV | PAMU_AVS1_OTV | PAMU_AVS1_APV | PAMU_AVS1_WAV \
  71                          | PAMU_AVS1_LAV | PAMU_AVS1_GCV | PAMU_AVS1_PDV)
  72 #define PAMU_AVS1_LIODN_SHIFT 16
  73 #define PAMU_LAV_LIODN_NOT_IN_PPAACT 0x400
  74
  75 #define PAMU_AVS2  0x0054
  76 #define PAMU_AVAH  0x0058
  77 #define PAMU_AVAL  0x005C
  78 #define PAMU_EECTL 0x0060
  79 #define PAMU_EEDIS 0x0064
  80 #define PAMU_EEINTEN 0x0068
  81 #define PAMU_EEDET 0x006C
  82 #define PAMU_EEATTR 0x0070
  83 #define PAMU_EEAHI 0x0074
  84 #define PAMU_EEALO 0x0078
  85 #define PAMU_EEDHI 0X007C
  86 #define PAMU_EEDLO 0x0080
  87 #define PAMU_EECC  0x0084
  88 #define PAMU_UDAD  0x0090
  89
  90 /* PAMU Revision Registers */
  91 #define PAMU_PR1 0x0BF8
  92 #define PAMU_PR2 0x0BFC
  93
  94 /* PAMU version mask */
  95 #define PAMU_PR1_MASK 0xffff
  96
  97 /* PAMU Capabilities Registers */
  98 #define PAMU_PC1 0x0C00
  99 #define PAMU_PC2 0x0C04
 100 #define PAMU_PC3 0x0C08
 101 #define PAMU_PC4 0x0C0C
 102
 103 /* PAMU Control Register */
 104 #define PAMU_PC 0x0C10
 105
 106 /* PAMU control defs */
 107 #define PAMU_CONTROL 0x0C10
 108 #define PAMU_PC_PGC 0x80000000  /* PAMU gate closed bit */
 109 #define PAMU_PC_PE   0x40000000 /* PAMU enable bit */
 110 #define PAMU_PC_SPCC 0x00000010 /* sPAACE cache enable */
 111 #define PAMU_PC_PPCC 0x00000001 /* pPAACE cache enable */
 112 #define PAMU_PC_OCE  0x00001000 /* OMT cache enable */
 113
 114 #define PAMU_PFA1 0x0C14
 115 #define PAMU_PFA2 0x0C18
 116
 117 #define PAMU_PC2_MLIODN(X) ((X) >> 16)
 118 #define PAMU_PC3_MWCE(X) (((X) >> 21) & 0xf)
 119
 120 /* PAMU Interrupt control and Status Register */
 121 #define PAMU_PICS 0x0C1C
 122 #define PAMU_ACCESS_VIOLATION_STAT   0x8
 123 #define PAMU_ACCESS_VIOLATION_ENABLE 0x4
 124
 125 /* PAMU Debug Registers */
 126 #define PAMU_PD1 0x0F00
 127 #define PAMU_PD2 0x0F04
 128 #define PAMU_PD3 0x0F08
 129 #define PAMU_PD4 0x0F0C
 130
 131 #define PAACE_AP_PERMS_DENIED  0x0
 132 #define PAACE_AP_PERMS_QUERY   0x1
 133 #define PAACE_AP_PERMS_UPDATE  0x2
 134 #define PAACE_AP_PERMS_ALL     0x3
 135
 136 #define PAACE_DD_TO_HOST       0x0
 137 #define PAACE_DD_TO_IO         0x1
 138 #define PAACE_PT_PRIMARY       0x0
 139 #define PAACE_PT_SECONDARY     0x1
 140 #define PAACE_V_INVALID        0x0
 141 #define PAACE_V_VALID          0x1
 142 #define PAACE_MW_SUBWINDOWS    0x1
 143
 144 #define PAACE_WSE_4K           0xB
 145 #define PAACE_WSE_8K           0xC
 146 #define PAACE_WSE_16K          0xD
 147 #define PAACE_WSE_32K          0xE
 148 #define PAACE_WSE_64K          0xF
 149 #define PAACE_WSE_128K         0x10
 150 #define PAACE_WSE_256K         0x11
 151 #define PAACE_WSE_512K         0x12
 152 #define PAACE_WSE_1M           0x13
 153 #define PAACE_WSE_2M           0x14
 154 #define PAACE_WSE_4M           0x15
 155 #define PAACE_WSE_8M           0x16
 156 #define PAACE_WSE_16M          0x17
 157 #define PAACE_WSE_32M          0x18
 158 #define PAACE_WSE_64M          0x19
 159 #define PAACE_WSE_128M         0x1A
 160 #define PAACE_WSE_256M         0x1B
 161 #define PAACE_WSE_512M         0x1C
 162 #define PAACE_WSE_1G           0x1D
 163 #define PAACE_WSE_2G           0x1E
 164 #define PAACE_WSE_4G           0x1F
 165
 166 #define PAACE_DID_PCI_EXPRESS_1 0x00
 167 #define PAACE_DID_PCI_EXPRESS_2 0x01
 168 #define PAACE_DID_PCI_EXPRESS_3 0x02
 169 #define PAACE_DID_PCI_EXPRESS_4 0x03
 170 #define PAACE_DID_LOCAL_BUS     0x04
 171 #define PAACE_DID_SRIO          0x0C
 172 #define PAACE_DID_MEM_1         0x10
 173 #define PAACE_DID_MEM_2         0x11
 174 #define PAACE_DID_MEM_3         0x12
 175 #define PAACE_DID_MEM_4         0x13
 176 #define PAACE_DID_MEM_1_2       0x14
 177 #define PAACE_DID_MEM_3_4       0x15
 178 #define PAACE_DID_MEM_1_4       0x16
 179 #define PAACE_DID_BM_SW_PORTAL  0x18
 180 #define PAACE_DID_PAMU          0x1C
 181 #define PAACE_DID_CAAM          0x21
 182 #define PAACE_DID_QM_SW_PORTAL  0x3C
 183 #define PAACE_DID_CORE0_INST    0x80
 184 #define PAACE_DID_CORE0_DATA    0x81
 185 #define PAACE_DID_CORE1_INST    0x82
 186 #define PAACE_DID_CORE1_DATA    0x83
 187 #define PAACE_DID_CORE2_INST    0x84
 188 #define PAACE_DID_CORE2_DATA    0x85
 189 #define PAACE_DID_CORE3_INST    0x86
 190 #define PAACE_DID_CORE3_DATA    0x87
 191 #define PAACE_DID_CORE4_INST    0x88
 192 #define PAACE_DID_CORE4_DATA    0x89
 193 #define PAACE_DID_CORE5_INST    0x8A
 194 #define PAACE_DID_CORE5_DATA    0x8B
 195 #define PAACE_DID_CORE6_INST    0x8C
 196 #define PAACE_DID_CORE6_DATA    0x8D
 197 #define PAACE_DID_CORE7_INST    0x8E
 198 #define PAACE_DID_CORE7_DATA    0x8F
 199 #define PAACE_DID_BROADCAST     0xFF
 200
 201 #define PAACE_ATM_NO_XLATE      0x00
 202 #define PAACE_ATM_WINDOW_XLATE  0x01
 203 #define PAACE_ATM_PAGE_XLATE    0x02
 204 #define PAACE_ATM_WIN_PG_XLATE  (PAACE_ATM_WINDOW_XLATE | PAACE_ATM_PAGE_XLATE)
 205 #define PAACE_OTM_NO_XLATE      0x00
 206 #define PAACE_OTM_IMMEDIATE     0x01
 207 #define PAACE_OTM_INDEXED       0x02
 208 #define PAACE_OTM_RESERVED      0x03
 209
 210 #define PAACE_M_COHERENCE_REQ   0x01
 211
 212 #define PAACE_PID_0             0x0
 213 #define PAACE_PID_1             0x1
 214 #define PAACE_PID_2             0x2
 215 #define PAACE_PID_3             0x3
 216 #define PAACE_PID_4             0x4
 217 #define PAACE_PID_5             0x5
 218 #define PAACE_PID_6             0x6
 219 #define PAACE_PID_7             0x7
 220
 221 #define PAACE_TCEF_FORMAT0_8B   0x00
 222 #define PAACE_TCEF_FORMAT1_RSVD 0x01
 223 /*
 224  * Hard coded value for the PAACT size to accommodate
 225  * maximum LIODN value generated by u-boot.
 226  */
 227 #define PAACE_NUMBER_ENTRIES    0x500
 228 /* Hard coded value for the SPAACT size */
 229 #define SPAACE_NUMBER_ENTRIES   0x800
 230
 231 #define OME_NUMBER_ENTRIES      16
 232
 233 /* PAACE Bit Field Defines */
 234 #define PPAACE_AF_WBAL                  0xfffff000
 235 #define PPAACE_AF_WBAL_SHIFT            12
 236 #define PPAACE_AF_WSE                   0x00000fc0
 237 #define PPAACE_AF_WSE_SHIFT             6
 238 #define PPAACE_AF_MW                    0x00000020
 239 #define PPAACE_AF_MW_SHIFT              5
 240
 241 #define SPAACE_AF_LIODN                 0xffff0000
 242 #define SPAACE_AF_LIODN_SHIFT           16
 243
 244 #define PAACE_AF_AP                     0x00000018
 245 #define PAACE_AF_AP_SHIFT               3
 246 #define PAACE_AF_DD                     0x00000004
 247 #define PAACE_AF_DD_SHIFT               2
 248 #define PAACE_AF_PT                     0x00000002
 249 #define PAACE_AF_PT_SHIFT               1
 250 #define PAACE_AF_V                      0x00000001
 251 #define PAACE_AF_V_SHIFT                0
 252
 253 #define PAACE_DA_HOST_CR                0x80
 254 #define PAACE_DA_HOST_CR_SHIFT          7
 255
 256 #define PAACE_IA_CID                    0x00FF0000
 257 #define PAACE_IA_CID_SHIFT              16
 258 #define PAACE_IA_WCE                    0x000000F0
 259 #define PAACE_IA_WCE_SHIFT              4
 260 #define PAACE_IA_ATM                    0x0000000C
 261 #define PAACE_IA_ATM_SHIFT              2
 262 #define PAACE_IA_OTM                    0x00000003
 263 #define PAACE_IA_OTM_SHIFT              0
 264
 265 #define PAACE_WIN_TWBAL                 0xfffff000
 266 #define PAACE_WIN_TWBAL_SHIFT           12
 267 #define PAACE_WIN_SWSE                  0x00000fc0
 268 #define PAACE_WIN_SWSE_SHIFT            6
 269
 270 /* PAMU Data Structures */
 271 /* primary / secondary paact structure */
 272 struct paace {
 273         /* PAACE Offset 0x00 */
 274         u32 wbah;                               /* only valid for Primary PAACE */
 275         u32 addr_bitfields;             /* See P/S PAACE_AF_* */
 276
 277         /* PAACE Offset 0x08 */
 278         /* Interpretation of first 32 bits dependent on DD above */
 279         union {
 280                 struct {
 281                         /* Destination ID, see PAACE_DID_* defines */
 282                         u8 did;
 283                         /* Partition ID */
 284                         u8 pid;
 285                         /* Snoop ID */
 286                         u8 snpid;
 287                         /* coherency_required : 1 reserved : 7 */
 288                         u8 coherency_required; /* See PAACE_DA_* */
 289                 } to_host;
 290                 struct {
 291                         /* Destination ID, see PAACE_DID_* defines */
 292                         u8  did;
 293                         u8  reserved1;
 294                         u16 reserved2;
 295                 } to_io;
 296         } domain_attr;
 297
 298         /* Implementation attributes + window count + address & operation translation modes */
 299         u32 impl_attr;                  /* See PAACE_IA_* */
 300
 301         /* PAACE Offset 0x10 */
 302         /* Translated window base address */
 303         u32 twbah;
 304         u32 win_bitfields;                      /* See PAACE_WIN_* */
 305
 306         /* PAACE Offset 0x18 */
 307         /* first secondary paace entry */
 308         u32 fspi;                               /* only valid for Primary PAACE */
 309         union {
 310                 struct {
 311                         u8 ioea;
 312                         u8 moea;
 313                         u8 ioeb;
 314                         u8 moeb;
 315                 } immed_ot;
 316                 struct {
 317                         u16 reserved;
 318                         u16 omi;
 319                 } index_ot;
 320         } op_encode;
 321
 322         /* PAACE Offsets 0x20-0x38 */
 323         u32 reserved[8];                        /* not currently implemented */
 324 };
 325
 326 /* OME : Operation mapping entry
 327  * MOE : Mapped Operation Encodings
 328  * The operation mapping table is table containing operation mapping entries (OME).
 329  * The index of a particular OME is programmed in the PAACE entry for translation
 330  * in bound I/O operations corresponding to an LIODN. The OMT is used for translation
 331  * specifically in case of the indexed translation mode. Each OME contains a 128
 332  * byte mapped operation encoding (MOE), where each byte represents an MOE.
 333  */
 334 #define NUM_MOE 128
 335 struct ome {
 336         u8 moe[NUM_MOE];
 337 } __packed;
 338
 339 #define PAACT_SIZE              (sizeof(struct paace) * PAACE_NUMBER_ENTRIES)
 340 #define SPAACT_SIZE              (sizeof(struct paace) * SPAACE_NUMBER_ENTRIES)
 341 #define OMT_SIZE                (sizeof(struct ome) * OME_NUMBER_ENTRIES)
 342
 343 #define PAMU_PAGE_SHIFT 12
 344 #define PAMU_PAGE_SIZE  4096ULL
 345
 346 #define IOE_READ        0x00
 347 #define IOE_READ_IDX    0x00
 348 #define IOE_WRITE       0x81
 349 #define IOE_WRITE_IDX   0x01
 350 #define IOE_EREAD0      0x82    /* Enhanced read type 0 */
 351 #define IOE_EREAD0_IDX  0x02    /* Enhanced read type 0 */
 352 #define IOE_EWRITE0     0x83    /* Enhanced write type 0 */
 353 #define IOE_EWRITE0_IDX 0x03    /* Enhanced write type 0 */
 354 #define IOE_DIRECT0     0x84    /* Directive type 0 */
 355 #define IOE_DIRECT0_IDX 0x04    /* Directive type 0 */
 356 #define IOE_EREAD1      0x85    /* Enhanced read type 1 */
 357 #define IOE_EREAD1_IDX  0x05    /* Enhanced read type 1 */
 358 #define IOE_EWRITE1     0x86    /* Enhanced write type 1 */
 359 #define IOE_EWRITE1_IDX 0x06    /* Enhanced write type 1 */
 360 #define IOE_DIRECT1     0x87    /* Directive type 1 */
 361 #define IOE_DIRECT1_IDX 0x07    /* Directive type 1 */
 362 #define IOE_RAC         0x8c    /* Read with Atomic clear */
 363 #define IOE_RAC_IDX     0x0c    /* Read with Atomic clear */
 364 #define IOE_RAS         0x8d    /* Read with Atomic set */
 365 #define IOE_RAS_IDX     0x0d    /* Read with Atomic set */
 366 #define IOE_RAD         0x8e    /* Read with Atomic decrement */
 367 #define IOE_RAD_IDX     0x0e    /* Read with Atomic decrement */
 368 #define IOE_RAI         0x8f    /* Read with Atomic increment */
 369 #define IOE_RAI_IDX     0x0f    /* Read with Atomic increment */
 370
 371 #define EOE_READ        0x00
 372 #define EOE_WRITE       0x01
 373 #define EOE_RAC         0x0c    /* Read with Atomic clear */
 374 #define EOE_RAS         0x0d    /* Read with Atomic set */
 375 #define EOE_RAD         0x0e    /* Read with Atomic decrement */
 376 #define EOE_RAI         0x0f    /* Read with Atomic increment */
 377 #define EOE_LDEC        0x10    /* Load external cache */
 378 #define EOE_LDECL       0x11    /* Load external cache with stash lock */
 379 #define EOE_LDECPE      0x12    /* Load external cache with preferred exclusive */
 380 #define EOE_LDECPEL     0x13    /* Load external cache with preferred exclusive and lock */
 381 #define EOE_LDECFE      0x14    /* Load external cache with forced exclusive */
 382 #define EOE_LDECFEL     0x15    /* Load external cache with forced exclusive and lock */
 383 #define EOE_RSA         0x16    /* Read with stash allocate */
 384 #define EOE_RSAU        0x17    /* Read with stash allocate and unlock */
 385 #define EOE_READI       0x18    /* Read with invalidate */
 386 #define EOE_RWNITC      0x19    /* Read with no intention to cache */
 387 #define EOE_WCI         0x1a    /* Write cache inhibited */
 388 #define EOE_WWSA        0x1b    /* Write with stash allocate */
 389 #define EOE_WWSAL       0x1c    /* Write with stash allocate and lock */
 390 #define EOE_WWSAO       0x1d    /* Write with stash allocate only */
 391 #define EOE_WWSAOL      0x1e    /* Write with stash allocate only and lock */
 392 #define EOE_VALID       0x80
 393
 394 /* Function prototypes */
 395 int pamu_domain_init(void);
 396 int pamu_enable_liodn(int liodn);
 397 int pamu_disable_liodn(int liodn);
 398 void pamu_free_subwins(int liodn);
 399 int pamu_config_ppaace(int liodn, phys_addr_t win_addr, phys_addr_t win_size,
 400                        u32 omi, unsigned long rpn, u32 snoopid, uint32_t stashid,
 401                        u32 subwin_cnt, int prot);
 402 int pamu_config_spaace(int liodn, u32 subwin_cnt, u32 subwin_addr,
 403                        phys_addr_t subwin_size, u32 omi, unsigned long rpn,
 404                        uint32_t snoopid, u32 stashid, int enable, int prot);
 405
 406 u32 get_stash_id(u32 stash_dest_hint, u32 vcpu);
 407 void get_ome_index(u32 *omi_index, struct device *dev);
 408 int  pamu_update_paace_stash(int liodn, u32 subwin, u32 value);
 409 int pamu_disable_spaace(int liodn, u32 subwin);
 410 u32 pamu_get_max_subwin_cnt(void);
 411
 412 #endif  /* __FSL_PAMU_H */