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 258