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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
85extern void leon_init(void);
86extern void leon_switch_mm(void);
87extern void leon_init_IRQ(void);
88
89static inline unsigned long sparc_leon3_get_dcachecfg(void)
90{
91 unsigned int retval;
92 __asm__ __volatile__("lda [%1] %2, %0\n\t" :
93 "=r"(retval) :
94 "r"(ASI_LEON3_SYSCTRL_DCFG),
95 "i"(ASI_LEON3_SYSCTRL));
96 return retval;
97}
98
99/* enable snooping */
100static inline void sparc_leon3_enable_snooping(void)
101{
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");
106};
107
108static inline int sparc_leon3_snooping_enabled(void)
109{
110 u32 cctrl;
111 __asm__ __volatile__("lda [%%g0] 2, %0\n\t" : "=r"(cctrl));
112 return (cctrl >> 23) & 1;
113};
114
115static inline void sparc_leon3_disable_cache(void)
116{
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");
121};
122
123static inline unsigned long sparc_leon3_asr17(void)
124{
125 u32 asr17;
126 __asm__ __volatile__ ("rd %%asr17, %0\n\t" : "=r"(asr17));
127 return asr17;
128};
129
130static inline int sparc_leon3_cpuid(void)
131{
132 return sparc_leon3_asr17() >> 28;
133}
134
135#endif /*!__ASSEMBLY__*/
136
137#ifdef CONFIG_SMP
138# define LEON3_IRQ_IPI_DEFAULT 13
139# define LEON3_IRQ_TICKER (leon3_ticker_irq)
140# define LEON3_IRQ_CROSS_CALL 15
141#endif
142
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)
147#else
148#define LEON_PAGE_SIZE_LEON 0
149#endif
150
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
187#else
188#error cannot determine LEON_PAGE_SIZE_LEON
189#endif
190
191#define LEON3_XCCR_SETS_MASK 0x07000000UL
192#define LEON3_XCCR_SSIZE_MASK 0x00f00000UL
193
194#define LEON2_CCR_DSETS_MASK 0x03000000UL
195#define LEON2_CFG_SSIZE_MASK 0x00007000UL
196
197#ifndef __ASSEMBLY__
198struct vm_area_struct;
199
200extern unsigned long leon_swprobe(unsigned long vaddr, unsigned long *paddr);
201extern void leon_flush_icache_all(void);
202extern void leon_flush_dcache_all(void);
203extern void leon_flush_cache_all(void);
204extern void leon_flush_tlb_all(void);
205extern int leon_flush_during_switch;
206extern int leon_flush_needed(void);
207extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page);
208
209/* struct that hold LEON3 cache configuration registers */
210struct 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 */
214};
215
216#include <linux/irq.h>
217#include <linux/interrupt.h>
218
219struct device_node;
220struct task_struct;
221extern unsigned int leon_build_device_irq(unsigned int real_irq,
222 irq_flow_handler_t flow_handler,
223 const char *name, int do_ack);
224extern void leon_update_virq_handling(unsigned int virq,
225 irq_flow_handler_t flow_handler,
226 const char *name, int do_ack);
227extern void leon_init_timers(void);
228extern void leon_trans_init(struct device_node *dp);
229extern void leon_node_init(struct device_node *dp, struct device_node ***nextp);
230extern void init_leon(void);
231extern void poke_leonsparc(void);
232extern void leon3_getCacheRegs(struct leon3_cacheregs *regs);
233extern int leon3_ticker_irq;
234
235#ifdef CONFIG_SMP
236extern int leon_smp_nrcpus(void);
237extern void leon_clear_profile_irq(int cpu);
238extern void leon_smp_done(void);
239extern void leon_boot_cpus(void);
240extern int leon_boot_one_cpu(int i, struct task_struct *);
241void leon_init_smp(void);
242void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu);
243extern irqreturn_t leon_percpu_timer_interrupt(int irq, void *unused);
244
245extern unsigned int smpleon_ipi[];
246extern unsigned int linux_trap_ipi15_leon[];
247extern int leon_ipi_irq;
248
249#endif /* CONFIG_SMP */
250
251#endif /* __ASSEMBLY__ */
252
253/* macros used in leon_mm.c */
254#define PFN(x) ((x) >> PAGE_SHIFT)
255#define _pfn_valid(pfn) ((pfn < last_valid_pfn) && (pfn >= PFN(phys_base)))
256#define _SRMMU_PTE_PMASK_LEON 0xffffffff
257
258#endif