1 /* 2 * Copyright (C) 2004 Konrad Eisele (eiselekd@web.de,konrad@gaisler.com) Gaisler Research 3 * Copyright (C) 2004 Stefan Holst (mail@s-holst.de) Uni-Stuttgart 4 * Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB 5 * Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB 6 */ 7 8 #ifndef LEON_H_INCLUDE 9 #define LEON_H_INCLUDE 10 11 #ifdef CONFIG_SPARC_LEON 12 13 #define ASI_LEON_NOCACHE 0x01 14 15 #define ASI_LEON_DCACHE_MISS 0x1 16 17 #define ASI_LEON_CACHEREGS 0x02 18 #define ASI_LEON_IFLUSH 0x10 19 #define ASI_LEON_DFLUSH 0x11 20 21 #define ASI_LEON_MMUFLUSH 0x18 22 #define ASI_LEON_MMUREGS 0x19 23 #define ASI_LEON_BYPASS 0x1c 24 #define ASI_LEON_FLUSH_PAGE 0x10 25 26 /* mmu register access, ASI_LEON_MMUREGS */ 27 #define LEON_CNR_CTRL 0x000 28 #define LEON_CNR_CTXP 0x100 29 #define LEON_CNR_CTX 0x200 30 #define LEON_CNR_F 0x300 31 #define LEON_CNR_FADDR 0x400 32 33 #define LEON_CNR_CTX_NCTX 256 /*number of MMU ctx */ 34 35 #define LEON_CNR_CTRL_TLBDIS 0x80000000 36 37 #define LEON_MMUTLB_ENT_MAX 64 38 39 /* 40 * diagnostic access from mmutlb.vhd: 41 * 0: pte address 42 * 4: pte 43 * 8: additional flags 44 */ 45 #define LEON_DIAGF_LVL 0x3 46 #define LEON_DIAGF_WR 0x8 47 #define LEON_DIAGF_WR_SHIFT 3 48 #define LEON_DIAGF_HIT 0x10 49 #define LEON_DIAGF_HIT_SHIFT 4 50 #define LEON_DIAGF_CTX 0x1fe0 51 #define LEON_DIAGF_CTX_SHIFT 5 52 #define LEON_DIAGF_VALID 0x2000 53 #define LEON_DIAGF_VALID_SHIFT 13 54 55 /* 56 * Interrupt Sources 57 * 58 * The interrupt source numbers directly map to the trap type and to 59 * the bits used in the Interrupt Clear, Interrupt Force, Interrupt Mask, 60 * and the Interrupt Pending Registers. 61 */ 62 #define LEON_INTERRUPT_CORRECTABLE_MEMORY_ERROR 1 63 #define LEON_INTERRUPT_UART_1_RX_TX 2 64 #define LEON_INTERRUPT_UART_0_RX_TX 3 65 #define LEON_INTERRUPT_EXTERNAL_0 4 66 #define LEON_INTERRUPT_EXTERNAL_1 5 67 #define LEON_INTERRUPT_EXTERNAL_2 6 68 #define LEON_INTERRUPT_EXTERNAL_3 7 69 #define LEON_INTERRUPT_TIMER1 8 70 #define LEON_INTERRUPT_TIMER2 9 71 #define LEON_INTERRUPT_EMPTY1 10 72 #define LEON_INTERRUPT_EMPTY2 11 73 #define LEON_INTERRUPT_OPEN_ETH 12 74 #define LEON_INTERRUPT_EMPTY4 13 75 #define LEON_INTERRUPT_EMPTY5 14 76 #define LEON_INTERRUPT_EMPTY6 15 77 78 /* irq masks */ 79 #define LEON_HARD_INT(x) (1 << (x)) /* irq 0-15 */ 80 #define LEON_IRQMASK_R 0x0000fffe /* bit 15- 1 of lregs.irqmask */ 81 #define LEON_IRQPRIO_R 0xfffe0000 /* bit 31-17 of lregs.irqmask */ 82 83 /* leon uart register definitions */ 84 #define LEON_OFF_UDATA 0x0 85 #define LEON_OFF_USTAT 0x4 86 #define LEON_OFF_UCTRL 0x8 87 #define LEON_OFF_USCAL 0xc 88 89 #define LEON_UCTRL_RE 0x01 90 #define LEON_UCTRL_TE 0x02 91 #define LEON_UCTRL_RI 0x04 92 #define LEON_UCTRL_TI 0x08 93 #define LEON_UCTRL_PS 0x10 94 #define LEON_UCTRL_PE 0x20 95 #define LEON_UCTRL_FL 0x40 96 #define LEON_UCTRL_LB 0x80 97 98 #define LEON_USTAT_DR 0x01 99 #define LEON_USTAT_TS 0x02 100 #define LEON_USTAT_TH 0x04 101 #define LEON_USTAT_BR 0x08 102 #define LEON_USTAT_OV 0x10 103 #define LEON_USTAT_PE 0x20 104 #define LEON_USTAT_FE 0x40 105 106 #define LEON_MCFG2_SRAMDIS 0x00002000 107 #define LEON_MCFG2_SDRAMEN 0x00004000 108 #define LEON_MCFG2_SRAMBANKSZ 0x00001e00 /* [12-9] */ 109 #define LEON_MCFG2_SRAMBANKSZ_SHIFT 9 110 #define LEON_MCFG2_SDRAMBANKSZ 0x03800000 /* [25-23] */ 111 #define LEON_MCFG2_SDRAMBANKSZ_SHIFT 23 112 113 #define LEON_TCNT0_MASK 0x7fffff 114 115 #define LEON_USTAT_ERROR (LEON_USTAT_OV | LEON_USTAT_PE | LEON_USTAT_FE) 116 /* no break yet */ 117 118 #define ASI_LEON3_SYSCTRL 0x02 119 #define ASI_LEON3_SYSCTRL_ICFG 0x08 120 #define ASI_LEON3_SYSCTRL_DCFG 0x0c 121 #define ASI_LEON3_SYSCTRL_CFG_SNOOPING (1 << 27) 122 #define ASI_LEON3_SYSCTRL_CFG_SSIZE(c) (1 << ((c >> 20) & 0xf)) 123 124 #ifndef __ASSEMBLY__ 125 126 /* do a virtual address read without cache */ 127 static inline unsigned long leon_readnobuffer_reg(unsigned long paddr) 128 { 129 unsigned long retval; 130 __asm__ __volatile__("lda [%1] %2, %0\n\t" : 131 "=r"(retval) : "r"(paddr), "i"(ASI_LEON_NOCACHE)); 132 return retval; 133 } 134 135 /* do a physical address bypass write, i.e. for 0x80000000 */ 136 static inline void leon_store_reg(unsigned long paddr, unsigned long value) 137 { 138 __asm__ __volatile__("sta %0, [%1] %2\n\t" : : "r"(value), "r"(paddr), 139 "i"(ASI_LEON_BYPASS) : "memory"); 140 } 141 142 /* do a physical address bypass load, i.e. for 0x80000000 */ 143 static inline unsigned long leon_load_reg(unsigned long paddr) 144 { 145 unsigned long retval; 146 __asm__ __volatile__("lda [%1] %2, %0\n\t" : 147 "=r"(retval) : "r"(paddr), "i"(ASI_LEON_BYPASS)); 148 return retval; 149 } 150 151 static inline void leon_srmmu_disabletlb(void) 152 { 153 unsigned int retval; 154 __asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0), 155 "i"(ASI_LEON_MMUREGS)); 156 retval |= LEON_CNR_CTRL_TLBDIS; 157 __asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0), 158 "i"(ASI_LEON_MMUREGS) : "memory"); 159 } 160 161 static inline void leon_srmmu_enabletlb(void) 162 { 163 unsigned int retval; 164 __asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0), 165 "i"(ASI_LEON_MMUREGS)); 166 retval = retval & ~LEON_CNR_CTRL_TLBDIS; 167 __asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0), 168 "i"(ASI_LEON_MMUREGS) : "memory"); 169 } 170 171 /* macro access for leon_load_reg() and leon_store_reg() */ 172 #define LEON3_BYPASS_LOAD_PA(x) (leon_load_reg((unsigned long)(x))) 173 #define LEON3_BYPASS_STORE_PA(x, v) (leon_store_reg((unsigned long)(x), (unsigned long)(v))) 174 #define LEON3_BYPASS_ANDIN_PA(x, v) LEON3_BYPASS_STORE_PA(x, LEON3_BYPASS_LOAD_PA(x) & v) 175 #define LEON3_BYPASS_ORIN_PA(x, v) LEON3_BYPASS_STORE_PA(x, LEON3_BYPASS_LOAD_PA(x) | v) 176 #define LEON_BYPASS_LOAD_PA(x) leon_load_reg((unsigned long)(x)) 177 #define LEON_BYPASS_STORE_PA(x, v) leon_store_reg((unsigned long)(x), (unsigned long)(v)) 178 #define LEON_REGLOAD_PA(x) leon_load_reg((unsigned long)(x)+LEON_PREGS) 179 #define LEON_REGSTORE_PA(x, v) leon_store_reg((unsigned long)(x)+LEON_PREGS, (unsigned long)(v)) 180 #define LEON_REGSTORE_OR_PA(x, v) LEON_REGSTORE_PA(x, LEON_REGLOAD_PA(x) | (unsigned long)(v)) 181 #define LEON_REGSTORE_AND_PA(x, v) LEON_REGSTORE_PA(x, LEON_REGLOAD_PA(x) & (unsigned long)(v)) 182 183 /* macro access for leon_readnobuffer_reg() */ 184 #define LEON_BYPASSCACHE_LOAD_VA(x) leon_readnobuffer_reg((unsigned long)(x)) 185 186 extern void leon_init(void); 187 extern void leon_switch_mm(void); 188 extern void leon_init_IRQ(void); 189 190 extern unsigned long last_valid_pfn; 191 192 static inline unsigned long sparc_leon3_get_dcachecfg(void) 193 { 194 unsigned int retval; 195 __asm__ __volatile__("lda [%1] %2, %0\n\t" : 196 "=r"(retval) : 197 "r"(ASI_LEON3_SYSCTRL_DCFG), 198 "i"(ASI_LEON3_SYSCTRL)); 199 return retval; 200 } 201 202 /* enable snooping */ 203 static inline void sparc_leon3_enable_snooping(void) 204 { 205 __asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t" 206 "set 0x800000, %%l2\n\t" 207 "or %%l2, %%l1, %%l2\n\t" 208 "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2"); 209 }; 210 211 static inline int sparc_leon3_snooping_enabled(void) 212 { 213 u32 cctrl; 214 __asm__ __volatile__("lda [%%g0] 2, %0\n\t" : "=r"(cctrl)); 215 return (cctrl >> 23) & 1; 216 }; 217 218 static inline void sparc_leon3_disable_cache(void) 219 { 220 __asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t" 221 "set 0x00000f, %%l2\n\t" 222 "andn %%l2, %%l1, %%l2\n\t" 223 "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2"); 224 }; 225 226 static inline unsigned long sparc_leon3_asr17(void) 227 { 228 u32 asr17; 229 __asm__ __volatile__ ("rd %%asr17, %0\n\t" : "=r"(asr17)); 230 return asr17; 231 }; 232 233 static inline int sparc_leon3_cpuid(void) 234 { 235 return sparc_leon3_asr17() >> 28; 236 } 237 238 #endif /*!__ASSEMBLY__*/ 239 240 #ifdef CONFIG_SMP 241 # define LEON3_IRQ_RESCHEDULE 13 242 # define LEON3_IRQ_TICKER (leon_percpu_timer_dev[0].irq) 243 # define LEON3_IRQ_CROSS_CALL 15 244 #endif 245 246 #if defined(PAGE_SIZE_LEON_8K) 247 #define LEON_PAGE_SIZE_LEON 1 248 #elif defined(PAGE_SIZE_LEON_16K) 249 #define LEON_PAGE_SIZE_LEON 2) 250 #else 251 #define LEON_PAGE_SIZE_LEON 0 252 #endif 253 254 #if LEON_PAGE_SIZE_LEON == 0 255 /* [ 8, 6, 6 ] + 12 */ 256 #define LEON_PGD_SH 24 257 #define LEON_PGD_M 0xff 258 #define LEON_PMD_SH 18 259 #define LEON_PMD_SH_V (LEON_PGD_SH-2) 260 #define LEON_PMD_M 0x3f 261 #define LEON_PTE_SH 12 262 #define LEON_PTE_M 0x3f 263 #elif LEON_PAGE_SIZE_LEON == 1 264 /* [ 7, 6, 6 ] + 13 */ 265 #define LEON_PGD_SH 25 266 #define LEON_PGD_M 0x7f 267 #define LEON_PMD_SH 19 268 #define LEON_PMD_SH_V (LEON_PGD_SH-1) 269 #define LEON_PMD_M 0x3f 270 #define LEON_PTE_SH 13 271 #define LEON_PTE_M 0x3f 272 #elif LEON_PAGE_SIZE_LEON == 2 273 /* [ 6, 6, 6 ] + 14 */ 274 #define LEON_PGD_SH 26 275 #define LEON_PGD_M 0x3f 276 #define LEON_PMD_SH 20 277 #define LEON_PMD_SH_V (LEON_PGD_SH-0) 278 #define LEON_PMD_M 0x3f 279 #define LEON_PTE_SH 14 280 #define LEON_PTE_M 0x3f 281 #elif LEON_PAGE_SIZE_LEON == 3 282 /* [ 4, 7, 6 ] + 15 */ 283 #define LEON_PGD_SH 28 284 #define LEON_PGD_M 0x0f 285 #define LEON_PMD_SH 21 286 #define LEON_PMD_SH_V (LEON_PGD_SH-0) 287 #define LEON_PMD_M 0x7f 288 #define LEON_PTE_SH 15 289 #define LEON_PTE_M 0x3f 290 #else 291 #error cannot determine LEON_PAGE_SIZE_LEON 292 #endif 293 294 #define PAGE_MIN_SHIFT (12) 295 #define PAGE_MIN_SIZE (1UL << PAGE_MIN_SHIFT) 296 297 #define LEON3_XCCR_SETS_MASK 0x07000000UL 298 #define LEON3_XCCR_SSIZE_MASK 0x00f00000UL 299 300 #define LEON2_CCR_DSETS_MASK 0x03000000UL 301 #define LEON2_CFG_SSIZE_MASK 0x00007000UL 302 303 #ifndef __ASSEMBLY__ 304 extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr); 305 extern void leon_flush_icache_all(void); 306 extern void leon_flush_dcache_all(void); 307 extern void leon_flush_cache_all(void); 308 extern void leon_flush_tlb_all(void); 309 extern int leon_flush_during_switch; 310 extern int leon_flush_needed(void); 311 312 struct vm_area_struct; 313 extern void leon_flush_icache_all(void); 314 extern void leon_flush_dcache_all(void); 315 extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page); 316 extern void leon_flush_cache_all(void); 317 extern void leon_flush_tlb_all(void); 318 extern int leon_flush_during_switch; 319 extern int leon_flush_needed(void); 320 extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page); 321 322 /* struct that hold LEON3 cache configuration registers */ 323 struct leon3_cacheregs { 324 unsigned long ccr; /* 0x00 - Cache Control Register */ 325 unsigned long iccr; /* 0x08 - Instruction Cache Configuration Register */ 326 unsigned long dccr; /* 0x0c - Data Cache Configuration Register */ 327 }; 328 329 /* struct that hold LEON2 cache configuration register 330 * & configuration register 331 */ 332 struct leon2_cacheregs { 333 unsigned long ccr, cfg; 334 }; 335 336 #ifdef __KERNEL__ 337 338 #include <linux/interrupt.h> 339 340 struct device_node; 341 extern unsigned int leon_build_device_irq(unsigned int real_irq, 342 irq_flow_handler_t flow_handler, 343 const char *name, int do_ack); 344 extern void leon_clear_clock_irq(void); 345 extern void leon_load_profile_irq(int cpu, unsigned int limit); 346 extern void leon_init_timers(irq_handler_t counter_fn); 347 extern void leon_clear_clock_irq(void); 348 extern void leon_load_profile_irq(int cpu, unsigned int limit); 349 extern void leon_trans_init(struct device_node *dp); 350 extern void leon_node_init(struct device_node *dp, struct device_node ***nextp); 351 extern void leon_init_IRQ(void); 352 extern void leon_init(void); 353 extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr); 354 extern void init_leon(void); 355 extern void poke_leonsparc(void); 356 extern void leon3_getCacheRegs(struct leon3_cacheregs *regs); 357 extern int leon_flush_needed(void); 358 extern void leon_switch_mm(void); 359 extern int srmmu_swprobe_trace; 360 361 #ifdef CONFIG_SMP 362 extern int leon_smp_nrcpus(void); 363 extern void leon_clear_profile_irq(int cpu); 364 extern void leon_smp_done(void); 365 extern void leon_boot_cpus(void); 366 extern int leon_boot_one_cpu(int i); 367 void leon_init_smp(void); 368 extern void cpu_probe(void); 369 extern void cpu_idle(void); 370 extern void init_IRQ(void); 371 extern void cpu_panic(void); 372 extern int __leon_processor_id(void); 373 void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu); 374 375 extern unsigned int real_irq_entry[], smpleon_ticker[]; 376 extern unsigned int patchme_maybe_smp_msg[]; 377 extern unsigned int t_nmi[], linux_trap_ipi15_leon[]; 378 extern unsigned int linux_trap_ipi15_sun4m[]; 379 380 #endif /* CONFIG_SMP */ 381 382 #endif /* __KERNEL__ */ 383 384 #endif /* __ASSEMBLY__ */ 385 386 /* macros used in leon_mm.c */ 387 #define PFN(x) ((x) >> PAGE_SHIFT) 388 #define _pfn_valid(pfn) ((pfn < last_valid_pfn) && (pfn >= PFN(phys_base))) 389 #define _SRMMU_PTE_PMASK_LEON 0xffffffff 390 391 #else /* defined(CONFIG_SPARC_LEON) */ 392 393 /* nop definitions for !LEON case */ 394 #define leon_init() do {} while (0) 395 #define leon_switch_mm() do {} while (0) 396 #define leon_init_IRQ() do {} while (0) 397 #define init_leon() do {} while (0) 398 #define leon_smp_done() do {} while (0) 399 #define leon_boot_cpus() do {} while (0) 400 #define leon_boot_one_cpu(i) 1 401 #define leon_init_smp() do {} while (0) 402 403 #endif /* !defined(CONFIG_SPARC_LEON) */ 404 405 #endif 406