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 /* mmu register access, ASI_LEON_MMUREGS */
  12 #define LEON_CNR_CTRL           0x000
  13 #define LEON_CNR_CTXP           0x100
  14 #define LEON_CNR_CTX            0x200
  15 #define LEON_CNR_F              0x300
  16 #define LEON_CNR_FADDR          0x400
  17
  18 #define LEON_CNR_CTX_NCTX       256     /*number of MMU ctx */
  19
  20 #define LEON_CNR_CTRL_TLBDIS    0x80000000
  21
  22 #define LEON_MMUTLB_ENT_MAX     64
  23
  24 /*
  25  * diagnostic access from mmutlb.vhd:
  26  * 0: pte address
  27  * 4: pte
  28  * 8: additional flags
  29  */
  30 #define LEON_DIAGF_LVL          0x3
  31 #define LEON_DIAGF_WR           0x8
  32 #define LEON_DIAGF_WR_SHIFT     3
  33 #define LEON_DIAGF_HIT          0x10
  34 #define LEON_DIAGF_HIT_SHIFT    4
  35 #define LEON_DIAGF_CTX          0x1fe0
  36 #define LEON_DIAGF_CTX_SHIFT    5
  37 #define LEON_DIAGF_VALID        0x2000
  38 #define LEON_DIAGF_VALID_SHIFT  13
  39
  40 /* irq masks */
  41 #define LEON_HARD_INT(x)        (1 << (x))      /* irq 0-15 */
  42 #define LEON_IRQMASK_R          0x0000fffe      /* bit 15- 1 of lregs.irqmask */
  43 #define LEON_IRQPRIO_R          0xfffe0000      /* bit 31-17 of lregs.irqmask */
  44
  45 #define LEON_MCFG2_SRAMDIS              0x00002000
  46 #define LEON_MCFG2_SDRAMEN              0x00004000
  47 #define LEON_MCFG2_SRAMBANKSZ           0x00001e00      /* [12-9] */
  48 #define LEON_MCFG2_SRAMBANKSZ_SHIFT     9
  49 #define LEON_MCFG2_SDRAMBANKSZ          0x03800000      /* [25-23] */
  50 #define LEON_MCFG2_SDRAMBANKSZ_SHIFT    23
  51
  52 #define LEON_TCNT0_MASK 0x7fffff
  53
  54
  55 #define ASI_LEON3_SYSCTRL               0x02
  56 #define ASI_LEON3_SYSCTRL_ICFG          0x08
  57 #define ASI_LEON3_SYSCTRL_DCFG          0x0c
  58 #define ASI_LEON3_SYSCTRL_CFG_SNOOPING (1 << 27)
  59 #define ASI_LEON3_SYSCTRL_CFG_SSIZE(c) (1 << ((c >> 20) & 0xf))
  60
  61 #ifndef __ASSEMBLY__
  62
  63 /* do a physical address bypass write, i.e. for 0x80000000 */
  64 static inline void leon_store_reg(unsigned long paddr, unsigned long value)
  65 {
  66         __asm__ __volatile__("sta %0, [%1] %2\n\t" : : "r"(value), "r"(paddr),
  67                              "i"(ASI_LEON_BYPASS) : "memory");
  68 }
  69
  70 /* do a physical address bypass load, i.e. for 0x80000000 */
  71 static inline unsigned long leon_load_reg(unsigned long paddr)
  72 {
  73         unsigned long retval;
  74         __asm__ __volatile__("lda [%1] %2, %0\n\t" :
  75                              "=r"(retval) : "r"(paddr), "i"(ASI_LEON_BYPASS));
  76         return retval;
  77 }
  78
  79 /* macro access for leon_load_reg() and leon_store_reg() */
  80 #define LEON3_BYPASS_LOAD_PA(x)     (leon_load_reg((unsigned long)(x)))
  81 #define LEON3_BYPASS_STORE_PA(x, v) (leon_store_reg((unsigned long)(x), (unsigned long)(v)))
  82 #define LEON_BYPASS_LOAD_PA(x)      leon_load_reg((unsigned long)(x))
  83 #define LEON_BYPASS_STORE_PA(x, v)  leon_store_reg((unsigned long)(x), (unsigned long)(v))
  84
  85 extern void leon_switch_mm(void);
  86 extern void leon_init_IRQ(void);
  87
  88 static inline unsigned long sparc_leon3_get_dcachecfg(void)
  89 {
  90         unsigned int retval;
  91         __asm__ __volatile__("lda [%1] %2, %0\n\t" :
  92                              "=r"(retval) :
  93                              "r"(ASI_LEON3_SYSCTRL_DCFG),
  94                              "i"(ASI_LEON3_SYSCTRL));
  95         return retval;
  96 }
  97
  98 /* enable snooping */
  99 static inline void sparc_leon3_enable_snooping(void)
 100 {
 101         __asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
 102                           "set 0x800000, %%l2\n\t"
 103                           "or  %%l2, %%l1, %%l2\n\t"
 104                           "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
 105 };
 106
 107 static inline int sparc_leon3_snooping_enabled(void)
 108 {
 109         u32 cctrl;
 110         __asm__ __volatile__("lda [%%g0] 2, %0\n\t" : "=r"(cctrl));
 111         return ((cctrl >> 23) & 1) && ((cctrl >> 17) & 1);
 112 };
 113
 114 static inline void sparc_leon3_disable_cache(void)
 115 {
 116         __asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
 117                           "set 0x00000f, %%l2\n\t"
 118                           "andn  %%l2, %%l1, %%l2\n\t"
 119                           "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
 120 };
 121
 122 static inline unsigned long sparc_leon3_asr17(void)
 123 {
 124         u32 asr17;
 125         __asm__ __volatile__ ("rd %%asr17, %0\n\t" : "=r"(asr17));
 126         return asr17;
 127 };
 128
 129 static inline int sparc_leon3_cpuid(void)
 130 {
 131         return sparc_leon3_asr17() >> 28;
 132 }
 133
 134 #endif /*!__ASSEMBLY__*/
 135
 136 #ifdef CONFIG_SMP
 137 # define LEON3_IRQ_IPI_DEFAULT          13
 138 # define LEON3_IRQ_TICKER               (leon3_gptimer_irq)
 139 # define LEON3_IRQ_CROSS_CALL           15
 140 #endif
 141
 142 #if defined(PAGE_SIZE_LEON_8K)
 143 #define LEON_PAGE_SIZE_LEON 1
 144 #elif defined(PAGE_SIZE_LEON_16K)
 145 #define LEON_PAGE_SIZE_LEON 2)
 146 #else
 147 #define LEON_PAGE_SIZE_LEON 0
 148 #endif
 149
 150 #if LEON_PAGE_SIZE_LEON == 0
 151 /* [ 8, 6, 6 ] + 12 */
 152 #define LEON_PGD_SH    24
 153 #define LEON_PGD_M     0xff
 154 #define LEON_PMD_SH    18
 155 #define LEON_PMD_SH_V  (LEON_PGD_SH-2)
 156 #define LEON_PMD_M     0x3f
 157 #define LEON_PTE_SH    12
 158 #define LEON_PTE_M     0x3f
 159 #elif LEON_PAGE_SIZE_LEON == 1
 160 /* [ 7, 6, 6 ] + 13 */
 161 #define LEON_PGD_SH    25
 162 #define LEON_PGD_M     0x7f
 163 #define LEON_PMD_SH    19
 164 #define LEON_PMD_SH_V  (LEON_PGD_SH-1)
 165 #define LEON_PMD_M     0x3f
 166 #define LEON_PTE_SH    13
 167 #define LEON_PTE_M     0x3f
 168 #elif LEON_PAGE_SIZE_LEON == 2
 169 /* [ 6, 6, 6 ] + 14 */
 170 #define LEON_PGD_SH    26
 171 #define LEON_PGD_M     0x3f
 172 #define LEON_PMD_SH    20
 173 #define LEON_PMD_SH_V  (LEON_PGD_SH-0)
 174 #define LEON_PMD_M     0x3f
 175 #define LEON_PTE_SH    14
 176 #define LEON_PTE_M     0x3f
 177 #elif LEON_PAGE_SIZE_LEON == 3
 178 /* [ 4, 7, 6 ] + 15 */
 179 #define LEON_PGD_SH    28
 180 #define LEON_PGD_M     0x0f
 181 #define LEON_PMD_SH    21
 182 #define LEON_PMD_SH_V  (LEON_PGD_SH-0)
 183 #define LEON_PMD_M     0x7f
 184 #define LEON_PTE_SH    15
 185 #define LEON_PTE_M     0x3f
 186 #else
 187 #error cannot determine LEON_PAGE_SIZE_LEON
 188 #endif
 189
 190 #define LEON3_XCCR_SETS_MASK  0x07000000UL
 191 #define LEON3_XCCR_SSIZE_MASK 0x00f00000UL
 192
 193 #define LEON2_CCR_DSETS_MASK 0x03000000UL
 194 #define LEON2_CFG_SSIZE_MASK 0x00007000UL
 195
 196 #ifndef __ASSEMBLY__
 197 struct vm_area_struct;
 198
 199 extern unsigned long leon_swprobe(unsigned long vaddr, unsigned long *paddr);
 200 extern void leon_flush_icache_all(void);
 201 extern void leon_flush_dcache_all(void);
 202 extern void leon_flush_cache_all(void);
 203 extern void leon_flush_tlb_all(void);
 204 extern int leon_flush_during_switch;
 205 extern int leon_flush_needed(void);
 206 extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page);
 207
 208 /* struct that hold LEON3 cache configuration registers */
 209 struct leon3_cacheregs {
 210         unsigned long ccr;      /* 0x00 - Cache Control Register  */
 211         unsigned long iccr;     /* 0x08 - Instruction Cache Configuration Register */
 212         unsigned long dccr;     /* 0x0c - Data Cache Configuration Register */
 213 };
 214
 215 #include <linux/irq.h>
 216 #include <linux/interrupt.h>
 217
 218 struct device_node;
 219 struct task_struct;
 220 extern unsigned int leon_build_device_irq(unsigned int real_irq,
 221                                            irq_flow_handler_t flow_handler,
 222                                            const char *name, int do_ack);
 223 extern void leon_update_virq_handling(unsigned int virq,
 224                               irq_flow_handler_t flow_handler,
 225                               const char *name, int do_ack);
 226 extern void leon_init_timers(void);
 227 extern void leon_trans_init(struct device_node *dp);
 228 extern void leon_node_init(struct device_node *dp, struct device_node ***nextp);
 229 extern void init_leon(void);
 230 extern void poke_leonsparc(void);
 231 extern void leon3_getCacheRegs(struct leon3_cacheregs *regs);
 232 extern int leon3_ticker_irq;
 233
 234 #ifdef CONFIG_SMP
 235 extern int leon_smp_nrcpus(void);
 236 extern void leon_clear_profile_irq(int cpu);
 237 extern void leon_smp_done(void);
 238 extern void leon_boot_cpus(void);
 239 extern int leon_boot_one_cpu(int i, struct task_struct *);
 240 void leon_init_smp(void);
 241 void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu);
 242 extern irqreturn_t leon_percpu_timer_interrupt(int irq, void *unused);
 243
 244 extern unsigned int smpleon_ipi[];
 245 extern unsigned int linux_trap_ipi15_leon[];
 246 extern int leon_ipi_irq;
 247
 248 #endif /* CONFIG_SMP */
 249
 250 #endif /* __ASSEMBLY__ */
 251
 252 /* macros used in leon_mm.c */
 253 #define PFN(x)           ((x) >> PAGE_SHIFT)
 254 #define _pfn_valid(pfn)  ((pfn < last_valid_pfn) && (pfn >= PFN(phys_base)))
 255 #define _SRMMU_PTE_PMASK_LEON 0xffffffff
 256
 257 #endif