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
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
18 #define LEON_CNR_CTX_NCTX 256 /*number of MMU ctx */
20 #define LEON_CNR_CTRL_TLBDIS 0x80000000
22 #define LEON_MMUTLB_ENT_MAX 64
25 * diagnostic access from mmutlb.vhd:
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
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 */
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
52 #define LEON_TCNT0_MASK 0x7fffff
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))
63 /* do a physical address bypass write, i.e. for 0x80000000 */
64 static inline void leon_store_reg(unsigned long paddr, unsigned long value)
66 __asm__ __volatile__("sta %0, [%1] %2\n\t" : : "r"(value), "r"(paddr),
67 "i"(ASI_LEON_BYPASS) : "memory");
70 /* do a physical address bypass load, i.e. for 0x80000000 */
71 static inline unsigned long leon_load_reg(unsigned long paddr)
74 __asm__ __volatile__("lda [%1] %2, %0\n\t" :
75 "=r"(retval) : "r"(paddr), "i"(ASI_LEON_BYPASS));
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))
85 extern void leon_init(void);
86 extern void leon_switch_mm(void);
87 extern void leon_init_IRQ(void);
89 static inline unsigned long sparc_leon3_get_dcachecfg(void)
92 __asm__ __volatile__("lda [%1] %2, %0\n\t" :
94 "r"(ASI_LEON3_SYSCTRL_DCFG),
95 "i"(ASI_LEON3_SYSCTRL));
100 static inline void sparc_leon3_enable_snooping(void)
102 __asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
103 "set 0x800000, %%l2\n\t"
104 "or %%l2, %%l1, %%l2\n\t"
105 "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
108 static inline int sparc_leon3_snooping_enabled(void)
111 __asm__ __volatile__("lda [%%g0] 2, %0\n\t" : "=r"(cctrl));
112 return (cctrl >> 23) & 1;
115 static inline void sparc_leon3_disable_cache(void)
117 __asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
118 "set 0x00000f, %%l2\n\t"
119 "andn %%l2, %%l1, %%l2\n\t"
120 "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
123 static inline unsigned long sparc_leon3_asr17(void)
126 __asm__ __volatile__ ("rd %%asr17, %0\n\t" : "=r"(asr17));
130 static inline int sparc_leon3_cpuid(void)
132 return sparc_leon3_asr17() >> 28;
135 #endif /*!__ASSEMBLY__*/
138 # define LEON3_IRQ_IPI_DEFAULT 13
139 # define LEON3_IRQ_TICKER (leon3_ticker_irq)
140 # define LEON3_IRQ_CROSS_CALL 15
143 #if defined(PAGE_SIZE_LEON_8K)
144 #define LEON_PAGE_SIZE_LEON 1
145 #elif defined(PAGE_SIZE_LEON_16K)
146 #define LEON_PAGE_SIZE_LEON 2)
148 #define LEON_PAGE_SIZE_LEON 0
151 #if LEON_PAGE_SIZE_LEON == 0
152 /* [ 8, 6, 6 ] + 12 */
153 #define LEON_PGD_SH 24
154 #define LEON_PGD_M 0xff
155 #define LEON_PMD_SH 18
156 #define LEON_PMD_SH_V (LEON_PGD_SH-2)
157 #define LEON_PMD_M 0x3f
158 #define LEON_PTE_SH 12
159 #define LEON_PTE_M 0x3f
160 #elif LEON_PAGE_SIZE_LEON == 1
161 /* [ 7, 6, 6 ] + 13 */
162 #define LEON_PGD_SH 25
163 #define LEON_PGD_M 0x7f
164 #define LEON_PMD_SH 19
165 #define LEON_PMD_SH_V (LEON_PGD_SH-1)
166 #define LEON_PMD_M 0x3f
167 #define LEON_PTE_SH 13
168 #define LEON_PTE_M 0x3f
169 #elif LEON_PAGE_SIZE_LEON == 2
170 /* [ 6, 6, 6 ] + 14 */
171 #define LEON_PGD_SH 26
172 #define LEON_PGD_M 0x3f
173 #define LEON_PMD_SH 20
174 #define LEON_PMD_SH_V (LEON_PGD_SH-0)
175 #define LEON_PMD_M 0x3f
176 #define LEON_PTE_SH 14
177 #define LEON_PTE_M 0x3f
178 #elif LEON_PAGE_SIZE_LEON == 3
179 /* [ 4, 7, 6 ] + 15 */
180 #define LEON_PGD_SH 28
181 #define LEON_PGD_M 0x0f
182 #define LEON_PMD_SH 21
183 #define LEON_PMD_SH_V (LEON_PGD_SH-0)
184 #define LEON_PMD_M 0x7f
185 #define LEON_PTE_SH 15
186 #define LEON_PTE_M 0x3f
188 #error cannot determine LEON_PAGE_SIZE_LEON
191 #define LEON3_XCCR_SETS_MASK 0x07000000UL
192 #define LEON3_XCCR_SSIZE_MASK 0x00f00000UL
194 #define LEON2_CCR_DSETS_MASK 0x03000000UL
195 #define LEON2_CFG_SSIZE_MASK 0x00007000UL
198 struct vm_area_struct;
200 extern unsigned long leon_swprobe(unsigned long vaddr, unsigned long *paddr);
201 extern void leon_flush_icache_all(void);
202 extern void leon_flush_dcache_all(void);
203 extern void leon_flush_cache_all(void);
204 extern void leon_flush_tlb_all(void);
205 extern int leon_flush_during_switch;
206 extern int leon_flush_needed(void);
207 extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page);
209 /* struct that hold LEON3 cache configuration registers */
210 struct leon3_cacheregs {
211 unsigned long ccr; /* 0x00 - Cache Control Register */
212 unsigned long iccr; /* 0x08 - Instruction Cache Configuration Register */
213 unsigned long dccr; /* 0x0c - Data Cache Configuration Register */
216 #include <linux/interrupt.h>
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;
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);
244 extern unsigned int smpleon_ipi[];
245 extern unsigned int linux_trap_ipi15_leon[];
246 extern int leon_ipi_irq;
248 #endif /* CONFIG_SMP */
250 #endif /* __ASSEMBLY__ */
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