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diff --git a/include/asm-sparc/cpudata_64.h b/include/asm-sparc/cpudata_64.h
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1/* cpudata.h: Per-cpu parameters.
2 *
3 * Copyright (C) 2003, 2005, 2006 David S. Miller (davem@davemloft.net)
4 */
5
6#ifndef _SPARC64_CPUDATA_H
7#define _SPARC64_CPUDATA_H
8
9#include <asm/hypervisor.h>
10#include <asm/asi.h>
11
12#ifndef __ASSEMBLY__
13
14#include <linux/percpu.h>
15#include <linux/threads.h>
16
17typedef struct {
18 /* Dcache line 1 */
19 unsigned int __softirq_pending; /* must be 1st, see rtrap.S */
20 unsigned int __pad0;
21 unsigned long clock_tick; /* %tick's per second */
22 unsigned long __pad;
23 unsigned int __pad1;
24 unsigned int __pad2;
25
26 /* Dcache line 2, rarely used */
27 unsigned int dcache_size;
28 unsigned int dcache_line_size;
29 unsigned int icache_size;
30 unsigned int icache_line_size;
31 unsigned int ecache_size;
32 unsigned int ecache_line_size;
33 int core_id;
34 int proc_id;
35} cpuinfo_sparc;
36
37DECLARE_PER_CPU(cpuinfo_sparc, __cpu_data);
38#define cpu_data(__cpu) per_cpu(__cpu_data, (__cpu))
39#define local_cpu_data() __get_cpu_var(__cpu_data)
40
41/* Trap handling code needs to get at a few critical values upon
42 * trap entry and to process TSB misses. These cannot be in the
43 * per_cpu() area as we really need to lock them into the TLB and
44 * thus make them part of the main kernel image. As a result we
45 * try to make this as small as possible.
46 *
47 * This is padded out and aligned to 64-bytes to avoid false sharing
48 * on SMP.
49 */
50
51/* If you modify the size of this structure, please update
52 * TRAP_BLOCK_SZ_SHIFT below.
53 */
54struct thread_info;
55struct trap_per_cpu {
56/* D-cache line 1: Basic thread information, cpu and device mondo queues */
57 struct thread_info *thread;
58 unsigned long pgd_paddr;
59 unsigned long cpu_mondo_pa;
60 unsigned long dev_mondo_pa;
61
62/* D-cache line 2: Error Mondo Queue and kernel buffer pointers */
63 unsigned long resum_mondo_pa;
64 unsigned long resum_kernel_buf_pa;
65 unsigned long nonresum_mondo_pa;
66 unsigned long nonresum_kernel_buf_pa;
67
68/* Dcache lines 3, 4, 5, and 6: Hypervisor Fault Status */
69 struct hv_fault_status fault_info;
70
71/* Dcache line 7: Physical addresses of CPU send mondo block and CPU list. */
72 unsigned long cpu_mondo_block_pa;
73 unsigned long cpu_list_pa;
74 unsigned long tsb_huge;
75 unsigned long tsb_huge_temp;
76
77/* Dcache line 8: IRQ work list, and keep trap_block a power-of-2 in size. */
78 unsigned long irq_worklist_pa;
79 unsigned int cpu_mondo_qmask;
80 unsigned int dev_mondo_qmask;
81 unsigned int resum_qmask;
82 unsigned int nonresum_qmask;
83 void *hdesc;
84} __attribute__((aligned(64)));
85extern struct trap_per_cpu trap_block[NR_CPUS];
86extern void init_cur_cpu_trap(struct thread_info *);
87extern void setup_tba(void);
88extern int ncpus_probed;
89extern void __init cpu_probe(void);
90extern const struct seq_operations cpuinfo_op;
91
92extern unsigned long real_hard_smp_processor_id(void);
93
94struct cpuid_patch_entry {
95 unsigned int addr;
96 unsigned int cheetah_safari[4];
97 unsigned int cheetah_jbus[4];
98 unsigned int starfire[4];
99 unsigned int sun4v[4];
100};
101extern struct cpuid_patch_entry __cpuid_patch, __cpuid_patch_end;
102
103struct sun4v_1insn_patch_entry {
104 unsigned int addr;
105 unsigned int insn;
106};
107extern struct sun4v_1insn_patch_entry __sun4v_1insn_patch,
108 __sun4v_1insn_patch_end;
109
110struct sun4v_2insn_patch_entry {
111 unsigned int addr;
112 unsigned int insns[2];
113};
114extern struct sun4v_2insn_patch_entry __sun4v_2insn_patch,
115 __sun4v_2insn_patch_end;
116
117#endif /* !(__ASSEMBLY__) */
118
119#define TRAP_PER_CPU_THREAD 0x00
120#define TRAP_PER_CPU_PGD_PADDR 0x08
121#define TRAP_PER_CPU_CPU_MONDO_PA 0x10
122#define TRAP_PER_CPU_DEV_MONDO_PA 0x18
123#define TRAP_PER_CPU_RESUM_MONDO_PA 0x20
124#define TRAP_PER_CPU_RESUM_KBUF_PA 0x28
125#define TRAP_PER_CPU_NONRESUM_MONDO_PA 0x30
126#define TRAP_PER_CPU_NONRESUM_KBUF_PA 0x38
127#define TRAP_PER_CPU_FAULT_INFO 0x40
128#define TRAP_PER_CPU_CPU_MONDO_BLOCK_PA 0xc0
129#define TRAP_PER_CPU_CPU_LIST_PA 0xc8
130#define TRAP_PER_CPU_TSB_HUGE 0xd0
131#define TRAP_PER_CPU_TSB_HUGE_TEMP 0xd8
132#define TRAP_PER_CPU_IRQ_WORKLIST_PA 0xe0
133#define TRAP_PER_CPU_CPU_MONDO_QMASK 0xe8
134#define TRAP_PER_CPU_DEV_MONDO_QMASK 0xec
135#define TRAP_PER_CPU_RESUM_QMASK 0xf0
136#define TRAP_PER_CPU_NONRESUM_QMASK 0xf4
137
138#define TRAP_BLOCK_SZ_SHIFT 8
139
140#include <asm/scratchpad.h>
141
142#define __GET_CPUID(REG) \
143 /* Spitfire implementation (default). */ \
144661: ldxa [%g0] ASI_UPA_CONFIG, REG; \
145 srlx REG, 17, REG; \
146 and REG, 0x1f, REG; \
147 nop; \
148 .section .cpuid_patch, "ax"; \
149 /* Instruction location. */ \
150 .word 661b; \
151 /* Cheetah Safari implementation. */ \
152 ldxa [%g0] ASI_SAFARI_CONFIG, REG; \
153 srlx REG, 17, REG; \
154 and REG, 0x3ff, REG; \
155 nop; \
156 /* Cheetah JBUS implementation. */ \
157 ldxa [%g0] ASI_JBUS_CONFIG, REG; \
158 srlx REG, 17, REG; \
159 and REG, 0x1f, REG; \
160 nop; \
161 /* Starfire implementation. */ \
162 sethi %hi(0x1fff40000d0 >> 9), REG; \
163 sllx REG, 9, REG; \
164 or REG, 0xd0, REG; \
165 lduwa [REG] ASI_PHYS_BYPASS_EC_E, REG;\
166 /* sun4v implementation. */ \
167 mov SCRATCHPAD_CPUID, REG; \
168 ldxa [REG] ASI_SCRATCHPAD, REG; \
169 nop; \
170 nop; \
171 .previous;
172
173#ifdef CONFIG_SMP
174
175#define TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
176 __GET_CPUID(TMP) \
177 sethi %hi(trap_block), DEST; \
178 sllx TMP, TRAP_BLOCK_SZ_SHIFT, TMP; \
179 or DEST, %lo(trap_block), DEST; \
180 add DEST, TMP, DEST; \
181
182/* Clobbers TMP, current address space PGD phys address into DEST. */
183#define TRAP_LOAD_PGD_PHYS(DEST, TMP) \
184 TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
185 ldx [DEST + TRAP_PER_CPU_PGD_PADDR], DEST;
186
187/* Clobbers TMP, loads local processor's IRQ work area into DEST. */
188#define TRAP_LOAD_IRQ_WORK_PA(DEST, TMP) \
189 TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
190 add DEST, TRAP_PER_CPU_IRQ_WORKLIST_PA, DEST;
191
192/* Clobbers TMP, loads DEST with current thread info pointer. */
193#define TRAP_LOAD_THREAD_REG(DEST, TMP) \
194 TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
195 ldx [DEST + TRAP_PER_CPU_THREAD], DEST;
196
197/* Given the current thread info pointer in THR, load the per-cpu
198 * area base of the current processor into DEST. REG1, REG2, and REG3 are
199 * clobbered.
200 *
201 * You absolutely cannot use DEST as a temporary in this code. The
202 * reason is that traps can happen during execution, and return from
203 * trap will load the fully resolved DEST per-cpu base. This can corrupt
204 * the calculations done by the macro mid-stream.
205 */
206#define LOAD_PER_CPU_BASE(DEST, THR, REG1, REG2, REG3) \
207 lduh [THR + TI_CPU], REG1; \
208 sethi %hi(__per_cpu_shift), REG3; \
209 sethi %hi(__per_cpu_base), REG2; \
210 ldx [REG3 + %lo(__per_cpu_shift)], REG3; \
211 ldx [REG2 + %lo(__per_cpu_base)], REG2; \
212 sllx REG1, REG3, REG3; \
213 add REG3, REG2, DEST;
214
215#else
216
217#define TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
218 sethi %hi(trap_block), DEST; \
219 or DEST, %lo(trap_block), DEST; \
220
221/* Uniprocessor versions, we know the cpuid is zero. */
222#define TRAP_LOAD_PGD_PHYS(DEST, TMP) \
223 TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
224 ldx [DEST + TRAP_PER_CPU_PGD_PADDR], DEST;
225
226/* Clobbers TMP, loads local processor's IRQ work area into DEST. */
227#define TRAP_LOAD_IRQ_WORK_PA(DEST, TMP) \
228 TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
229 add DEST, TRAP_PER_CPU_IRQ_WORKLIST_PA, DEST;
230
231#define TRAP_LOAD_THREAD_REG(DEST, TMP) \
232 TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
233 ldx [DEST + TRAP_PER_CPU_THREAD], DEST;
234
235/* No per-cpu areas on uniprocessor, so no need to load DEST. */
236#define LOAD_PER_CPU_BASE(DEST, THR, REG1, REG2, REG3)
237
238#endif /* !(CONFIG_SMP) */
239
240#endif /* _SPARC64_CPUDATA_H */
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