arch/sparc/include/asm/leon.h

   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