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 /*
  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 extern 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 extern 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 sparc_leon_eirq_register(int eirq);
 187 extern void leon_init(void);
 188 extern void leon_switch_mm(void);
 189 extern void leon_init_IRQ(void);
 190
 191 extern unsigned long last_valid_pfn;
 192
 193 extern inline unsigned long sparc_leon3_get_dcachecfg(void)
 194 {
 195         unsigned int retval;
 196         __asm__ __volatile__("lda [%1] %2, %0\n\t" :
 197                              "=r"(retval) :
 198                              "r"(ASI_LEON3_SYSCTRL_DCFG),
 199                              "i"(ASI_LEON3_SYSCTRL));
 200         return retval;
 201 }
 202
 203 /* enable snooping */
 204 extern inline void sparc_leon3_enable_snooping(void)
 205 {
 206         __asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
 207                           "set 0x800000, %%l2\n\t"
 208                           "or  %%l2, %%l1, %%l2\n\t"
 209                           "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
 210 };
 211
 212 extern inline void sparc_leon3_disable_cache(void)
 213 {
 214         __asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
 215                           "set 0x00000f, %%l2\n\t"
 216                           "andn  %%l2, %%l1, %%l2\n\t"
 217                           "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
 218 };
 219
 220 #endif /*!__ASSEMBLY__*/
 221
 222 #ifdef CONFIG_SMP
 223 # define LEON3_IRQ_RESCHEDULE           13
 224 # define LEON3_IRQ_TICKER               (leon_percpu_timer_dev[0].irq)
 225 # define LEON3_IRQ_CROSS_CALL           15
 226 #endif
 227
 228 #if defined(PAGE_SIZE_LEON_8K)
 229 #define LEON_PAGE_SIZE_LEON 1
 230 #elif defined(PAGE_SIZE_LEON_16K)
 231 #define LEON_PAGE_SIZE_LEON 2)
 232 #else
 233 #define LEON_PAGE_SIZE_LEON 0
 234 #endif
 235
 236 #if LEON_PAGE_SIZE_LEON == 0
 237 /* [ 8, 6, 6 ] + 12 */
 238 #define LEON_PGD_SH    24
 239 #define LEON_PGD_M     0xff
 240 #define LEON_PMD_SH    18
 241 #define LEON_PMD_SH_V  (LEON_PGD_SH-2)
 242 #define LEON_PMD_M     0x3f
 243 #define LEON_PTE_SH    12
 244 #define LEON_PTE_M     0x3f
 245 #elif LEON_PAGE_SIZE_LEON == 1
 246 /* [ 7, 6, 6 ] + 13 */
 247 #define LEON_PGD_SH    25
 248 #define LEON_PGD_M     0x7f
 249 #define LEON_PMD_SH    19
 250 #define LEON_PMD_SH_V  (LEON_PGD_SH-1)
 251 #define LEON_PMD_M     0x3f
 252 #define LEON_PTE_SH    13
 253 #define LEON_PTE_M     0x3f
 254 #elif LEON_PAGE_SIZE_LEON == 2
 255 /* [ 6, 6, 6 ] + 14 */
 256 #define LEON_PGD_SH    26
 257 #define LEON_PGD_M     0x3f
 258 #define LEON_PMD_SH    20
 259 #define LEON_PMD_SH_V  (LEON_PGD_SH-0)
 260 #define LEON_PMD_M     0x3f
 261 #define LEON_PTE_SH    14
 262 #define LEON_PTE_M     0x3f
 263 #elif LEON_PAGE_SIZE_LEON == 3
 264 /* [ 4, 7, 6 ] + 15 */
 265 #define LEON_PGD_SH    28
 266 #define LEON_PGD_M     0x0f
 267 #define LEON_PMD_SH    21
 268 #define LEON_PMD_SH_V  (LEON_PGD_SH-0)
 269 #define LEON_PMD_M     0x7f
 270 #define LEON_PTE_SH    15
 271 #define LEON_PTE_M     0x3f
 272 #else
 273 #error cannot determine LEON_PAGE_SIZE_LEON
 274 #endif
 275
 276 #define PAGE_MIN_SHIFT   (12)
 277 #define PAGE_MIN_SIZE    (1UL << PAGE_MIN_SHIFT)
 278
 279 #define LEON3_XCCR_SETS_MASK  0x07000000UL
 280 #define LEON3_XCCR_SSIZE_MASK 0x00f00000UL
 281
 282 #define LEON2_CCR_DSETS_MASK 0x03000000UL
 283 #define LEON2_CFG_SSIZE_MASK 0x00007000UL
 284
 285 #ifndef __ASSEMBLY__
 286 extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr);
 287 extern void leon_flush_icache_all(void);
 288 extern void leon_flush_dcache_all(void);
 289 extern void leon_flush_cache_all(void);
 290 extern void leon_flush_tlb_all(void);
 291 extern int leon_flush_during_switch;
 292 extern int leon_flush_needed(void);
 293
 294 struct vm_area_struct;
 295 extern void leon_flush_icache_all(void);
 296 extern void leon_flush_dcache_all(void);
 297 extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page);
 298 extern void leon_flush_cache_all(void);
 299 extern void leon_flush_tlb_all(void);
 300 extern int leon_flush_during_switch;
 301 extern int leon_flush_needed(void);
 302 extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page);
 303
 304 /* struct that hold LEON3 cache configuration registers */
 305 struct leon3_cacheregs {
 306         unsigned long ccr;      /* 0x00 - Cache Control Register  */
 307         unsigned long iccr;     /* 0x08 - Instruction Cache Configuration Register */
 308         unsigned long dccr;     /* 0x0c - Data Cache Configuration Register */
 309 };
 310
 311 /* struct that hold LEON2 cache configuration register
 312  * & configuration register
 313  */
 314 struct leon2_cacheregs {
 315         unsigned long ccr, cfg;
 316 };
 317
 318 #ifdef __KERNEL__
 319
 320 #include <linux/interrupt.h>
 321
 322 struct device_node;
 323 extern int sparc_leon_eirq_get(int eirq, int cpu);
 324 extern irqreturn_t sparc_leon_eirq_isr(int dummy, void *dev_id);
 325 extern void sparc_leon_eirq_register(int eirq);
 326 extern void leon_clear_clock_irq(void);
 327 extern void leon_load_profile_irq(int cpu, unsigned int limit);
 328 extern void leon_init_timers(irq_handler_t counter_fn);
 329 extern void leon_clear_clock_irq(void);
 330 extern void leon_load_profile_irq(int cpu, unsigned int limit);
 331 extern void leon_trans_init(struct device_node *dp);
 332 extern void leon_node_init(struct device_node *dp, struct device_node ***nextp);
 333 extern void leon_init_IRQ(void);
 334 extern void leon_init(void);
 335 extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr);
 336 extern void init_leon(void);
 337 extern void poke_leonsparc(void);
 338 extern void leon3_getCacheRegs(struct leon3_cacheregs *regs);
 339 extern int leon_flush_needed(void);
 340 extern void leon_switch_mm(void);
 341 extern int srmmu_swprobe_trace;
 342
 343 #endif /* __KERNEL__ */
 344
 345 #endif /* __ASSEMBLY__ */
 346
 347 /* macros used in leon_mm.c */
 348 #define PFN(x)           ((x) >> PAGE_SHIFT)
 349 #define _pfn_valid(pfn)  ((pfn < last_valid_pfn) && (pfn >= PFN(phys_base)))
 350 #define _SRMMU_PTE_PMASK_LEON 0xffffffff
 351
 352 #else /* defined(CONFIG_SPARC_LEON) */
 353
 354 /* nop definitions for !LEON case */
 355 #define leon_init() do {} while (0)
 356 #define leon_switch_mm() do {} while (0)
 357 #define leon_init_IRQ() do {} while (0)
 358 #define init_leon() do {} while (0)
 359
 360 #endif /* !defined(CONFIG_SPARC_LEON) */
 361
 362 #endif