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 */ 64static 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 */ 71static 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 85void leon_switch_mm(void); 86void leon_init_IRQ(void); 87 88static 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 */ 99static 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 107static 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 114static 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 122static 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 129static 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__ 197struct vm_area_struct; 198 199unsigned long leon_swprobe(unsigned long vaddr, unsigned long *paddr); 200void leon_flush_icache_all(void); 201void leon_flush_dcache_all(void); 202void leon_flush_cache_all(void); 203void leon_flush_tlb_all(void); 204extern int leon_flush_during_switch; 205int leon_flush_needed(void); 206void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page); 207 208/* struct that hold LEON3 cache configuration registers */ 209struct 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 218struct device_node; 219struct task_struct; 220unsigned int leon_build_device_irq(unsigned int real_irq, 221 irq_flow_handler_t flow_handler, 222 const char *name, int do_ack); 223void leon_update_virq_handling(unsigned int virq, 224 irq_flow_handler_t flow_handler, 225 const char *name, int do_ack); 226void leon_init_timers(void); 227void leon_trans_init(struct device_node *dp); 228void leon_node_init(struct device_node *dp, struct device_node ***nextp); 229void init_leon(void); 230void poke_leonsparc(void); 231void leon3_getCacheRegs(struct leon3_cacheregs *regs); 232extern int leon3_ticker_irq; 233 234#ifdef CONFIG_SMP 235int leon_smp_nrcpus(void); 236void leon_clear_profile_irq(int cpu); 237void leon_smp_done(void); 238void leon_boot_cpus(void); 239int leon_boot_one_cpu(int i, struct task_struct *); 240void leon_init_smp(void); 241void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu); 242irqreturn_t leon_percpu_timer_interrupt(int irq, void *unused); 243 244extern unsigned int smpleon_ipi[]; 245extern unsigned int linux_trap_ipi15_leon[]; 246extern 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