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 */ 104static 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 */ 113static 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 */ 120static 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 128static 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 138static 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 163extern void leon_init(void); 164extern void leon_switch_mm(void); 165extern void leon_init_IRQ(void); 166 167extern unsigned long last_valid_pfn; 168 169static 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 */ 180static 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 188static 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 195static 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 203static 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 210static 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__ 281extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr); 282extern void leon_flush_icache_all(void); 283extern void leon_flush_dcache_all(void); 284extern void leon_flush_cache_all(void); 285extern void leon_flush_tlb_all(void); 286extern int leon_flush_during_switch; 287extern int leon_flush_needed(void); 288 289struct vm_area_struct; 290extern void leon_flush_icache_all(void); 291extern void leon_flush_dcache_all(void); 292extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page); 293extern void leon_flush_cache_all(void); 294extern void leon_flush_tlb_all(void); 295extern int leon_flush_during_switch; 296extern int leon_flush_needed(void); 297extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page); 298 299/* struct that hold LEON3 cache configuration registers */ 300struct 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 */ 309struct leon2_cacheregs { 310 unsigned long ccr, cfg; 311}; 312 313#ifdef __KERNEL__ 314 315#include <linux/interrupt.h> 316 317struct device_node; 318extern unsigned int leon_build_device_irq(unsigned int real_irq, 319 irq_flow_handler_t flow_handler, 320 const char *name, int do_ack); 321extern void leon_update_virq_handling(unsigned int virq, 322 irq_flow_handler_t flow_handler, 323 const char *name, int do_ack); 324extern void leon_clear_clock_irq(void); 325extern void leon_load_profile_irq(int cpu, unsigned int limit); 326extern void leon_init_timers(irq_handler_t counter_fn); 327extern void leon_clear_clock_irq(void); 328extern void leon_load_profile_irq(int cpu, unsigned int limit); 329extern void leon_trans_init(struct device_node *dp); 330extern void leon_node_init(struct device_node *dp, struct device_node ***nextp); 331extern void leon_init_IRQ(void); 332extern void leon_init(void); 333extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr); 334extern void init_leon(void); 335extern void poke_leonsparc(void); 336extern void leon3_getCacheRegs(struct leon3_cacheregs *regs); 337extern int leon_flush_needed(void); 338extern void leon_switch_mm(void); 339extern int srmmu_swprobe_trace; 340extern int leon3_ticker_irq; 341 342#ifdef CONFIG_SMP 343extern int leon_smp_nrcpus(void); 344extern void leon_clear_profile_irq(int cpu); 345extern void leon_smp_done(void); 346extern void leon_boot_cpus(void); 347extern int leon_boot_one_cpu(int i); 348void leon_init_smp(void); 349extern void cpu_idle(void); 350extern void init_IRQ(void); 351extern void cpu_panic(void); 352extern int __leon_processor_id(void); 353void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu); 354extern irqreturn_t leon_percpu_timer_interrupt(int irq, void *unused); 355 356extern unsigned int real_irq_entry[]; 357extern unsigned int smpleon_ipi[]; 358extern unsigned int patchme_maybe_smp_msg[]; 359extern unsigned int t_nmi[], linux_trap_ipi15_leon[]; 360extern unsigned int linux_trap_ipi15_sun4m[]; 361extern 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