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 /* irq masks */ 56 #define LEON_HARD_INT(x) (1 << (x)) /* irq 0-15 */ 57 #define LEON_IRQMASK_R 0x0000fffe /* bit 15- 1 of lregs.irqmask */ 58 #define LEON_IRQPRIO_R 0xfffe0000 /* bit 31-17 of lregs.irqmask */ 59 60 /* leon uart register definitions */ 61 #define LEON_OFF_UDATA 0x0 62 #define LEON_OFF_USTAT 0x4 63 #define LEON_OFF_UCTRL 0x8 64 #define LEON_OFF_USCAL 0xc 65 66 #define LEON_UCTRL_RE 0x01 67 #define LEON_UCTRL_TE 0x02 68 #define LEON_UCTRL_RI 0x04 69 #define LEON_UCTRL_TI 0x08 70 #define LEON_UCTRL_PS 0x10 71 #define LEON_UCTRL_PE 0x20 72 #define LEON_UCTRL_FL 0x40 73 #define LEON_UCTRL_LB 0x80 74 75 #define LEON_USTAT_DR 0x01 76 #define LEON_USTAT_TS 0x02 77 #define LEON_USTAT_TH 0x04 78 #define LEON_USTAT_BR 0x08 79 #define LEON_USTAT_OV 0x10 80 #define LEON_USTAT_PE 0x20 81 #define LEON_USTAT_FE 0x40 82 83 #define LEON_MCFG2_SRAMDIS 0x00002000 84 #define LEON_MCFG2_SDRAMEN 0x00004000 85 #define LEON_MCFG2_SRAMBANKSZ 0x00001e00 /* [12-9] */ 86 #define LEON_MCFG2_SRAMBANKSZ_SHIFT 9 87 #define LEON_MCFG2_SDRAMBANKSZ 0x03800000 /* [25-23] */ 88 #define LEON_MCFG2_SDRAMBANKSZ_SHIFT 23 89 90 #define LEON_TCNT0_MASK 0x7fffff 91 92 #define LEON_USTAT_ERROR (LEON_USTAT_OV | LEON_USTAT_PE | LEON_USTAT_FE) 93 /* no break yet */ 94 95 #define ASI_LEON3_SYSCTRL 0x02 96 #define ASI_LEON3_SYSCTRL_ICFG 0x08 97 #define ASI_LEON3_SYSCTRL_DCFG 0x0c 98 #define ASI_LEON3_SYSCTRL_CFG_SNOOPING (1 << 27) 99 #define ASI_LEON3_SYSCTRL_CFG_SSIZE(c) (1 << ((c >> 20) & 0xf)) 100 101 #ifndef __ASSEMBLY__ 102 103 /* do a virtual address read without cache */ 104 static inline unsigned long leon_readnobuffer_reg(unsigned long paddr) 105 { 106 unsigned long retval; 107 __asm__ __volatile__("lda [%1] %2, %0\n\t" : 108 "=r"(retval) : "r"(paddr), "i"(ASI_LEON_NOCACHE)); 109 return retval; 110 } 111 112 /* do a physical address bypass write, i.e. for 0x80000000 */ 113 static inline void leon_store_reg(unsigned long paddr, unsigned long value) 114 { 115 __asm__ __volatile__("sta %0, [%1] %2\n\t" : : "r"(value), "r"(paddr), 116 "i"(ASI_LEON_BYPASS) : "memory"); 117 } 118 119 /* do a physical address bypass load, i.e. for 0x80000000 */ 120 static inline unsigned long leon_load_reg(unsigned long paddr) 121 { 122 unsigned long retval; 123 __asm__ __volatile__("lda [%1] %2, %0\n\t" : 124 "=r"(retval) : "r"(paddr), "i"(ASI_LEON_BYPASS)); 125 return retval; 126 } 127 128 static inline void leon_srmmu_disabletlb(void) 129 { 130 unsigned int retval; 131 __asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0), 132 "i"(ASI_LEON_MMUREGS)); 133 retval |= LEON_CNR_CTRL_TLBDIS; 134 __asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0), 135 "i"(ASI_LEON_MMUREGS) : "memory"); 136 } 137 138 static inline void leon_srmmu_enabletlb(void) 139 { 140 unsigned int retval; 141 __asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0), 142 "i"(ASI_LEON_MMUREGS)); 143 retval = retval & ~LEON_CNR_CTRL_TLBDIS; 144 __asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0), 145 "i"(ASI_LEON_MMUREGS) : "memory"); 146 } 147 148 /* macro access for leon_load_reg() and leon_store_reg() */ 149 #define LEON3_BYPASS_LOAD_PA(x) (leon_load_reg((unsigned long)(x))) 150 #define LEON3_BYPASS_STORE_PA(x, v) (leon_store_reg((unsigned long)(x), (unsigned long)(v))) 151 #define LEON3_BYPASS_ANDIN_PA(x, v) LEON3_BYPASS_STORE_PA(x, LEON3_BYPASS_LOAD_PA(x) & v) 152 #define LEON3_BYPASS_ORIN_PA(x, v) LEON3_BYPASS_STORE_PA(x, LEON3_BYPASS_LOAD_PA(x) | v) 153 #define LEON_BYPASS_LOAD_PA(x) leon_load_reg((unsigned long)(x)) 154 #define LEON_BYPASS_STORE_PA(x, v) leon_store_reg((unsigned long)(x), (unsigned long)(v)) 155 #define LEON_REGLOAD_PA(x) leon_load_reg((unsigned long)(x)+LEON_PREGS) 156 #define LEON_REGSTORE_PA(x, v) leon_store_reg((unsigned long)(x)+LEON_PREGS, (unsigned long)(v)) 157 #define LEON_REGSTORE_OR_PA(x, v) LEON_REGSTORE_PA(x, LEON_REGLOAD_PA(x) | (unsigned long)(v)) 158 #define LEON_REGSTORE_AND_PA(x, v) LEON_REGSTORE_PA(x, LEON_REGLOAD_PA(x) & (unsigned long)(v)) 159 160 /* macro access for leon_readnobuffer_reg() */ 161 #define LEON_BYPASSCACHE_LOAD_VA(x) leon_readnobuffer_reg((unsigned long)(x)) 162 163 extern void leon_init(void); 164 extern void leon_switch_mm(void); 165 extern void leon_init_IRQ(void); 166 167 extern unsigned long last_valid_pfn; 168 169 static inline unsigned long sparc_leon3_get_dcachecfg(void) 170 { 171 unsigned int retval; 172 __asm__ __volatile__("lda [%1] %2, %0\n\t" : 173 "=r"(retval) : 174 "r"(ASI_LEON3_SYSCTRL_DCFG), 175 "i"(ASI_LEON3_SYSCTRL)); 176 return retval; 177 } 178 179 /* enable snooping */ 180 static inline void sparc_leon3_enable_snooping(void) 181 { 182 __asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t" 183 "set 0x800000, %%l2\n\t" 184 "or %%l2, %%l1, %%l2\n\t" 185 "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2"); 186 }; 187 188 static inline int sparc_leon3_snooping_enabled(void) 189 { 190 u32 cctrl; 191 __asm__ __volatile__("lda [%%g0] 2, %0\n\t" : "=r"(cctrl)); 192 return (cctrl >> 23) & 1; 193 }; 194 195 static inline void sparc_leon3_disable_cache(void) 196 { 197 __asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t" 198 "set 0x00000f, %%l2\n\t" 199 "andn %%l2, %%l1, %%l2\n\t" 200 "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2"); 201 }; 202 203 static inline unsigned long sparc_leon3_asr17(void) 204 { 205 u32 asr17; 206 __asm__ __volatile__ ("rd %%asr17, %0\n\t" : "=r"(asr17)); 207 return asr17; 208 }; 209 210 static inline int sparc_leon3_cpuid(void) 211 { 212 return sparc_leon3_asr17() >> 28; 213 } 214 215 #endif /*!__ASSEMBLY__*/ 216 217 #ifdef CONFIG_SMP 218 # define LEON3_IRQ_IPI_DEFAULT 13 219 # define LEON3_IRQ_TICKER (leon3_ticker_irq) 220 # define LEON3_IRQ_CROSS_CALL 15 221 #endif 222 223 #if defined(PAGE_SIZE_LEON_8K) 224 #define LEON_PAGE_SIZE_LEON 1 225 #elif defined(PAGE_SIZE_LEON_16K) 226 #define LEON_PAGE_SIZE_LEON 2) 227 #else 228 #define LEON_PAGE_SIZE_LEON 0 229 #endif 230 231 #if LEON_PAGE_SIZE_LEON == 0 232 /* [ 8, 6, 6 ] + 12 */ 233 #define LEON_PGD_SH 24 234 #define LEON_PGD_M 0xff 235 #define LEON_PMD_SH 18 236 #define LEON_PMD_SH_V (LEON_PGD_SH-2) 237 #define LEON_PMD_M 0x3f 238 #define LEON_PTE_SH 12 239 #define LEON_PTE_M 0x3f 240 #elif LEON_PAGE_SIZE_LEON == 1 241 /* [ 7, 6, 6 ] + 13 */ 242 #define LEON_PGD_SH 25 243 #define LEON_PGD_M 0x7f 244 #define LEON_PMD_SH 19 245 #define LEON_PMD_SH_V (LEON_PGD_SH-1) 246 #define LEON_PMD_M 0x3f 247 #define LEON_PTE_SH 13 248 #define LEON_PTE_M 0x3f 249 #elif LEON_PAGE_SIZE_LEON == 2 250 /* [ 6, 6, 6 ] + 14 */ 251 #define LEON_PGD_SH 26 252 #define LEON_PGD_M 0x3f 253 #define LEON_PMD_SH 20 254 #define LEON_PMD_SH_V (LEON_PGD_SH-0) 255 #define LEON_PMD_M 0x3f 256 #define LEON_PTE_SH 14 257 #define LEON_PTE_M 0x3f 258 #elif LEON_PAGE_SIZE_LEON == 3 259 /* [ 4, 7, 6 ] + 15 */ 260 #define LEON_PGD_SH 28 261 #define LEON_PGD_M 0x0f 262 #define LEON_PMD_SH 21 263 #define LEON_PMD_SH_V (LEON_PGD_SH-0) 264 #define LEON_PMD_M 0x7f 265 #define LEON_PTE_SH 15 266 #define LEON_PTE_M 0x3f 267 #else 268 #error cannot determine LEON_PAGE_SIZE_LEON 269 #endif 270 271 #define PAGE_MIN_SHIFT (12) 272 #define PAGE_MIN_SIZE (1UL << PAGE_MIN_SHIFT) 273 274 #define LEON3_XCCR_SETS_MASK 0x07000000UL 275 #define LEON3_XCCR_SSIZE_MASK 0x00f00000UL 276 277 #define LEON2_CCR_DSETS_MASK 0x03000000UL 278 #define LEON2_CFG_SSIZE_MASK 0x00007000UL 279 280 #ifndef __ASSEMBLY__ 281 extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr); 282 extern void leon_flush_icache_all(void); 283 extern void leon_flush_dcache_all(void); 284 extern void leon_flush_cache_all(void); 285 extern void leon_flush_tlb_all(void); 286 extern int leon_flush_during_switch; 287 extern int leon_flush_needed(void); 288 289 struct vm_area_struct; 290 extern void leon_flush_icache_all(void); 291 extern void leon_flush_dcache_all(void); 292 extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page); 293 extern void leon_flush_cache_all(void); 294 extern void leon_flush_tlb_all(void); 295 extern int leon_flush_during_switch; 296 extern int leon_flush_needed(void); 297 extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page); 298 299 /* struct that hold LEON3 cache configuration registers */ 300 struct leon3_cacheregs { 301 unsigned long ccr; /* 0x00 - Cache Control Register */ 302 unsigned long iccr; /* 0x08 - Instruction Cache Configuration Register */ 303 unsigned long dccr; /* 0x0c - Data Cache Configuration Register */ 304 }; 305 306 /* struct that hold LEON2 cache configuration register 307 * & configuration register 308 */ 309 struct leon2_cacheregs { 310 unsigned long ccr, cfg; 311 }; 312 313 #ifdef __KERNEL__ 314 315 #include <linux/interrupt.h> 316 317 struct device_node; 318 extern unsigned int leon_build_device_irq(unsigned int real_irq, 319 irq_flow_handler_t flow_handler, 320 const char *name, int do_ack); 321 extern void leon_update_virq_handling(unsigned int virq, 322 irq_flow_handler_t flow_handler, 323 const char *name, int do_ack); 324 extern void leon_clear_clock_irq(void); 325 extern void leon_load_profile_irq(int cpu, unsigned int limit); 326 extern void leon_init_timers(irq_handler_t counter_fn); 327 extern void leon_clear_clock_irq(void); 328 extern void leon_load_profile_irq(int cpu, unsigned int limit); 329 extern void leon_trans_init(struct device_node *dp); 330 extern void leon_node_init(struct device_node *dp, struct device_node ***nextp); 331 extern void leon_init_IRQ(void); 332 extern void leon_init(void); 333 extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr); 334 extern void init_leon(void); 335 extern void poke_leonsparc(void); 336 extern void leon3_getCacheRegs(struct leon3_cacheregs *regs); 337 extern int leon_flush_needed(void); 338 extern void leon_switch_mm(void); 339 extern int srmmu_swprobe_trace; 340 extern int leon3_ticker_irq; 341 342 #ifdef CONFIG_SMP 343 extern int leon_smp_nrcpus(void); 344 extern void leon_clear_profile_irq(int cpu); 345 extern void leon_smp_done(void); 346 extern void leon_boot_cpus(void); 347 extern int leon_boot_one_cpu(int i); 348 void leon_init_smp(void); 349 extern void cpu_idle(void); 350 extern void init_IRQ(void); 351 extern void cpu_panic(void); 352 extern int __leon_processor_id(void); 353 void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu); 354 extern irqreturn_t leon_percpu_timer_interrupt(int irq, void *unused); 355 356 extern unsigned int real_irq_entry[]; 357 extern unsigned int smpleon_ipi[]; 358 extern unsigned int patchme_maybe_smp_msg[]; 359 extern unsigned int t_nmi[], linux_trap_ipi15_leon[]; 360 extern unsigned int linux_trap_ipi15_sun4m[]; 361 extern int leon_ipi_irq; 362 363 #endif /* CONFIG_SMP */ 364 365 #endif /* __KERNEL__ */ 366 367 #endif /* __ASSEMBLY__ */ 368 369 /* macros used in leon_mm.c */ 370 #define PFN(x) ((x) >> PAGE_SHIFT) 371 #define _pfn_valid(pfn) ((pfn < last_valid_pfn) && (pfn >= PFN(phys_base))) 372 #define _SRMMU_PTE_PMASK_LEON 0xffffffff 373 374 #else /* defined(CONFIG_SPARC_LEON) */ 375 376 /* nop definitions for !LEON case */ 377 #define leon_init() do {} while (0) 378 #define leon_switch_mm() do {} while (0) 379 #define leon_init_IRQ() do {} while (0) 380 #define init_leon() do {} while (0) 381 #define leon_smp_done() do {} while (0) 382 #define leon_boot_cpus() do {} while (0) 383 #define leon_boot_one_cpu(i) 1 384 #define leon_init_smp() do {} while (0) 385 386 #endif /* !defined(CONFIG_SPARC_LEON) */ 387 388 #endif 389