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 #ifdef CONFIG_SPARC_LEON
13 #define ASI_LEON_NOCACHE 0x01
15 #define ASI_LEON_DCACHE_MISS 0x1
17 #define ASI_LEON_CACHEREGS 0x02
18 #define ASI_LEON_IFLUSH 0x10
19 #define ASI_LEON_DFLUSH 0x11
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
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
33 #define LEON_CNR_CTX_NCTX 256 /*number of MMU ctx */
35 #define LEON_CNR_CTRL_TLBDIS 0x80000000
37 #define LEON_MMUTLB_ENT_MAX 64
40 * diagnostic access from mmutlb.vhd:
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
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.
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
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 */
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
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
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
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
113 #define LEON_TCNT0_MASK 0x7fffff
115 #define LEON_USTAT_ERROR (LEON_USTAT_OV | LEON_USTAT_PE | LEON_USTAT_FE)
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))
126 /* do a virtual address read without cache */
127 static inline unsigned long leon_readnobuffer_reg(unsigned long paddr
)
129 unsigned long retval
;
130 __asm__
__volatile__("lda [%1] %2, %0\n\t" :
131 "=r"(retval
) : "r"(paddr
), "i"(ASI_LEON_NOCACHE
));
135 /* do a physical address bypass write, i.e. for 0x80000000 */
136 static inline void leon_store_reg(unsigned long paddr
, unsigned long value
)
138 __asm__
__volatile__("sta %0, [%1] %2\n\t" : : "r"(value
), "r"(paddr
),
139 "i"(ASI_LEON_BYPASS
) : "memory");
142 /* do a physical address bypass load, i.e. for 0x80000000 */
143 static inline unsigned long leon_load_reg(unsigned long paddr
)
145 unsigned long retval
;
146 __asm__
__volatile__("lda [%1] %2, %0\n\t" :
147 "=r"(retval
) : "r"(paddr
), "i"(ASI_LEON_BYPASS
));
151 static inline void leon_srmmu_disabletlb(void)
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");
161 static inline void leon_srmmu_enabletlb(void)
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");
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))
183 /* macro access for leon_readnobuffer_reg() */
184 #define LEON_BYPASSCACHE_LOAD_VA(x) leon_readnobuffer_reg((unsigned long)(x))
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);
191 extern unsigned long last_valid_pfn
;
193 static inline unsigned long sparc_leon3_get_dcachecfg(void)
196 __asm__
__volatile__("lda [%1] %2, %0\n\t" :
198 "r"(ASI_LEON3_SYSCTRL_DCFG
),
199 "i"(ASI_LEON3_SYSCTRL
));
203 /* enable snooping */
204 static inline void sparc_leon3_enable_snooping(void)
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");
212 static inline int sparc_leon3_snooping_enabled(void)
215 __asm__
__volatile__("lda [%%g0] 2, %0\n\t" : "=r"(cctrl
));
216 return (cctrl
>> 23) & 1;
219 static inline void sparc_leon3_disable_cache(void)
221 __asm__
__volatile__ ("lda [%%g0] 2, %%l1\n\t"
222 "set 0x00000f, %%l2\n\t"
223 "andn %%l2, %%l1, %%l2\n\t"
224 "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
227 #endif /*!__ASSEMBLY__*/
230 # define LEON3_IRQ_RESCHEDULE 13
231 # define LEON3_IRQ_TICKER (leon_percpu_timer_dev[0].irq)
232 # define LEON3_IRQ_CROSS_CALL 15
235 #if defined(PAGE_SIZE_LEON_8K)
236 #define LEON_PAGE_SIZE_LEON 1
237 #elif defined(PAGE_SIZE_LEON_16K)
238 #define LEON_PAGE_SIZE_LEON 2)
240 #define LEON_PAGE_SIZE_LEON 0
243 #if LEON_PAGE_SIZE_LEON == 0
244 /* [ 8, 6, 6 ] + 12 */
245 #define LEON_PGD_SH 24
246 #define LEON_PGD_M 0xff
247 #define LEON_PMD_SH 18
248 #define LEON_PMD_SH_V (LEON_PGD_SH-2)
249 #define LEON_PMD_M 0x3f
250 #define LEON_PTE_SH 12
251 #define LEON_PTE_M 0x3f
252 #elif LEON_PAGE_SIZE_LEON == 1
253 /* [ 7, 6, 6 ] + 13 */
254 #define LEON_PGD_SH 25
255 #define LEON_PGD_M 0x7f
256 #define LEON_PMD_SH 19
257 #define LEON_PMD_SH_V (LEON_PGD_SH-1)
258 #define LEON_PMD_M 0x3f
259 #define LEON_PTE_SH 13
260 #define LEON_PTE_M 0x3f
261 #elif LEON_PAGE_SIZE_LEON == 2
262 /* [ 6, 6, 6 ] + 14 */
263 #define LEON_PGD_SH 26
264 #define LEON_PGD_M 0x3f
265 #define LEON_PMD_SH 20
266 #define LEON_PMD_SH_V (LEON_PGD_SH-0)
267 #define LEON_PMD_M 0x3f
268 #define LEON_PTE_SH 14
269 #define LEON_PTE_M 0x3f
270 #elif LEON_PAGE_SIZE_LEON == 3
271 /* [ 4, 7, 6 ] + 15 */
272 #define LEON_PGD_SH 28
273 #define LEON_PGD_M 0x0f
274 #define LEON_PMD_SH 21
275 #define LEON_PMD_SH_V (LEON_PGD_SH-0)
276 #define LEON_PMD_M 0x7f
277 #define LEON_PTE_SH 15
278 #define LEON_PTE_M 0x3f
280 #error cannot determine LEON_PAGE_SIZE_LEON
283 #define PAGE_MIN_SHIFT (12)
284 #define PAGE_MIN_SIZE (1UL << PAGE_MIN_SHIFT)
286 #define LEON3_XCCR_SETS_MASK 0x07000000UL
287 #define LEON3_XCCR_SSIZE_MASK 0x00f00000UL
289 #define LEON2_CCR_DSETS_MASK 0x03000000UL
290 #define LEON2_CFG_SSIZE_MASK 0x00007000UL
293 extern unsigned long srmmu_swprobe(unsigned long vaddr
, unsigned long *paddr
);
294 extern void leon_flush_icache_all(void);
295 extern void leon_flush_dcache_all(void);
296 extern void leon_flush_cache_all(void);
297 extern void leon_flush_tlb_all(void);
298 extern int leon_flush_during_switch
;
299 extern int leon_flush_needed(void);
301 struct vm_area_struct
;
302 extern void leon_flush_icache_all(void);
303 extern void leon_flush_dcache_all(void);
304 extern void leon_flush_pcache_all(struct vm_area_struct
*vma
, unsigned long page
);
305 extern void leon_flush_cache_all(void);
306 extern void leon_flush_tlb_all(void);
307 extern int leon_flush_during_switch
;
308 extern int leon_flush_needed(void);
309 extern void leon_flush_pcache_all(struct vm_area_struct
*vma
, unsigned long page
);
311 /* struct that hold LEON3 cache configuration registers */
312 struct leon3_cacheregs
{
313 unsigned long ccr
; /* 0x00 - Cache Control Register */
314 unsigned long iccr
; /* 0x08 - Instruction Cache Configuration Register */
315 unsigned long dccr
; /* 0x0c - Data Cache Configuration Register */
318 /* struct that hold LEON2 cache configuration register
319 * & configuration register
321 struct leon2_cacheregs
{
322 unsigned long ccr
, cfg
;
327 #include <linux/interrupt.h>
330 extern int sparc_leon_eirq_get(int eirq
, int cpu
);
331 extern irqreturn_t
sparc_leon_eirq_isr(int dummy
, void *dev_id
);
332 extern void sparc_leon_eirq_register(int eirq
);
333 extern void leon_clear_clock_irq(void);
334 extern void leon_load_profile_irq(int cpu
, unsigned int limit
);
335 extern void leon_init_timers(irq_handler_t counter_fn
);
336 extern void leon_clear_clock_irq(void);
337 extern void leon_load_profile_irq(int cpu
, unsigned int limit
);
338 extern void leon_trans_init(struct device_node
*dp
);
339 extern void leon_node_init(struct device_node
*dp
, struct device_node
***nextp
);
340 extern void leon_init_IRQ(void);
341 extern void leon_init(void);
342 extern unsigned long srmmu_swprobe(unsigned long vaddr
, unsigned long *paddr
);
343 extern void init_leon(void);
344 extern void poke_leonsparc(void);
345 extern void leon3_getCacheRegs(struct leon3_cacheregs
*regs
);
346 extern int leon_flush_needed(void);
347 extern void leon_switch_mm(void);
348 extern int srmmu_swprobe_trace
;
351 extern int leon_smp_nrcpus(void);
352 extern void leon_clear_profile_irq(int cpu
);
353 extern void leon_smp_done(void);
354 extern void leon_boot_cpus(void);
355 extern int leon_boot_one_cpu(int i
);
356 void leon_init_smp(void);
357 extern void cpu_probe(void);
358 extern void cpu_idle(void);
359 extern void init_IRQ(void);
360 extern void cpu_panic(void);
361 extern int __leon_processor_id(void);
362 void leon_enable_irq_cpu(unsigned int irq_nr
, unsigned int cpu
);
364 extern unsigned int real_irq_entry
[], smpleon_ticker
[];
365 extern unsigned int patchme_maybe_smp_msg
[];
366 extern unsigned long trapbase_cpu1
[];
367 extern unsigned long trapbase_cpu2
[];
368 extern unsigned long trapbase_cpu3
[];
369 extern unsigned int t_nmi
[], linux_trap_ipi15_leon
[];
370 extern unsigned int linux_trap_ipi15_sun4m
[];
372 #endif /* CONFIG_SMP */
374 #endif /* __KERNEL__ */
376 #endif /* __ASSEMBLY__ */
378 /* macros used in leon_mm.c */
379 #define PFN(x) ((x) >> PAGE_SHIFT)
380 #define _pfn_valid(pfn) ((pfn < last_valid_pfn) && (pfn >= PFN(phys_base)))
381 #define _SRMMU_PTE_PMASK_LEON 0xffffffff
383 #else /* defined(CONFIG_SPARC_LEON) */
385 /* nop definitions for !LEON case */
386 #define leon_init() do {} while (0)
387 #define leon_switch_mm() do {} while (0)
388 #define leon_init_IRQ() do {} while (0)
389 #define init_leon() do {} while (0)
390 #define leon_smp_done() do {} while (0)
391 #define leon_boot_cpus() do {} while (0)
392 #define leon_boot_one_cpu(i) 1
393 #define leon_init_smp() do {} while (0)
395 #endif /* !defined(CONFIG_SPARC_LEON) */
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