Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* sun4d_smp.c: Sparc SS1000/SC2000 SMP support. |
| 2 | * |
| 3 | * Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| 4 | * |
| 5 | * Based on sun4m's smp.c, which is: |
| 6 | * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) |
| 7 | */ |
| 8 | |
| 9 | #include <asm/head.h> |
| 10 | |
| 11 | #include <linux/kernel.h> |
| 12 | #include <linux/sched.h> |
| 13 | #include <linux/threads.h> |
| 14 | #include <linux/smp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | #include <linux/interrupt.h> |
| 16 | #include <linux/kernel_stat.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/spinlock.h> |
| 19 | #include <linux/mm.h> |
| 20 | #include <linux/swap.h> |
| 21 | #include <linux/profile.h> |
Adrian Bunk | 6c81c32 | 2008-02-06 01:37:51 -0800 | [diff] [blame] | 22 | #include <linux/delay.h> |
Robert Reif | 4245e59 | 2008-10-12 20:52:26 -0700 | [diff] [blame] | 23 | #include <linux/cpu.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | |
| 25 | #include <asm/ptrace.h> |
| 26 | #include <asm/atomic.h> |
Al Viro | 0d84438 | 2006-10-08 14:30:44 +0100 | [diff] [blame] | 27 | #include <asm/irq_regs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <asm/irq.h> |
| 30 | #include <asm/page.h> |
| 31 | #include <asm/pgalloc.h> |
| 32 | #include <asm/pgtable.h> |
| 33 | #include <asm/oplib.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <asm/sbi.h> |
| 35 | #include <asm/tlbflush.h> |
| 36 | #include <asm/cacheflush.h> |
| 37 | #include <asm/cpudata.h> |
| 38 | |
Al Viro | 32231a6 | 2007-07-21 19:18:57 -0700 | [diff] [blame] | 39 | #include "irq.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #define IRQ_CROSS_CALL 15 |
| 41 | |
| 42 | extern ctxd_t *srmmu_ctx_table_phys; |
| 43 | |
Krzysztof Helt | 5fec811 | 2006-08-25 16:22:21 -0700 | [diff] [blame] | 44 | static volatile int smp_processors_ready = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | static int smp_highest_cpu; |
| 46 | extern volatile unsigned long cpu_callin_map[NR_CPUS]; |
Bob Breuer | a54123e | 2006-03-23 22:36:19 -0800 | [diff] [blame] | 47 | extern cpuinfo_sparc cpu_data[NR_CPUS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | extern unsigned char boot_cpu_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | extern volatile int smp_process_available; |
Bob Breuer | a54123e | 2006-03-23 22:36:19 -0800 | [diff] [blame] | 50 | |
| 51 | extern cpumask_t smp_commenced_mask; |
| 52 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | extern int __smp4d_processor_id(void); |
| 54 | |
| 55 | /* #define SMP_DEBUG */ |
| 56 | |
| 57 | #ifdef SMP_DEBUG |
| 58 | #define SMP_PRINTK(x) printk x |
| 59 | #else |
| 60 | #define SMP_PRINTK(x) |
| 61 | #endif |
| 62 | |
David S. Miller | a638f25 | 2009-01-08 16:47:17 -0800 | [diff] [blame] | 63 | static inline unsigned long sun4d_swap(volatile unsigned long *ptr, unsigned long val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | { |
| 65 | __asm__ __volatile__("swap [%1], %0\n\t" : |
| 66 | "=&r" (val), "=&r" (ptr) : |
| 67 | "0" (val), "1" (ptr)); |
| 68 | return val; |
| 69 | } |
| 70 | |
| 71 | static void smp_setup_percpu_timer(void); |
| 72 | extern void cpu_probe(void); |
| 73 | extern void sun4d_distribute_irqs(void); |
| 74 | |
David S. Miller | 7b1af32 | 2008-09-02 01:17:41 -0700 | [diff] [blame] | 75 | static unsigned char cpu_leds[32]; |
| 76 | |
| 77 | static inline void show_leds(int cpuid) |
| 78 | { |
| 79 | cpuid &= 0x1e; |
| 80 | __asm__ __volatile__ ("stba %0, [%1] %2" : : |
| 81 | "r" ((cpu_leds[cpuid] << 4) | cpu_leds[cpuid+1]), |
| 82 | "r" (ECSR_BASE(cpuid) | BB_LEDS), |
| 83 | "i" (ASI_M_CTL)); |
| 84 | } |
| 85 | |
Al Viro | 409832f | 2008-11-22 17:33:54 +0000 | [diff] [blame] | 86 | void __cpuinit smp4d_callin(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | { |
| 88 | int cpuid = hard_smp4d_processor_id(); |
| 89 | extern spinlock_t sun4d_imsk_lock; |
| 90 | unsigned long flags; |
| 91 | |
| 92 | /* Show we are alive */ |
| 93 | cpu_leds[cpuid] = 0x6; |
| 94 | show_leds(cpuid); |
| 95 | |
| 96 | /* Enable level15 interrupt, disable level14 interrupt for now */ |
| 97 | cc_set_imsk((cc_get_imsk() & ~0x8000) | 0x4000); |
| 98 | |
| 99 | local_flush_cache_all(); |
| 100 | local_flush_tlb_all(); |
| 101 | |
Manfred Spraul | e545a61 | 2008-09-07 16:57:22 +0200 | [diff] [blame] | 102 | notify_cpu_starting(cpuid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | /* |
| 104 | * Unblock the master CPU _only_ when the scheduler state |
| 105 | * of all secondary CPUs will be up-to-date, so after |
| 106 | * the SMP initialization the master will be just allowed |
| 107 | * to call the scheduler code. |
| 108 | */ |
| 109 | /* Get our local ticker going. */ |
| 110 | smp_setup_percpu_timer(); |
| 111 | |
| 112 | calibrate_delay(); |
| 113 | smp_store_cpu_info(cpuid); |
| 114 | local_flush_cache_all(); |
| 115 | local_flush_tlb_all(); |
| 116 | |
| 117 | /* Allow master to continue. */ |
David S. Miller | a638f25 | 2009-01-08 16:47:17 -0800 | [diff] [blame] | 118 | sun4d_swap((unsigned long *)&cpu_callin_map[cpuid], 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | local_flush_cache_all(); |
| 120 | local_flush_tlb_all(); |
| 121 | |
| 122 | cpu_probe(); |
| 123 | |
| 124 | while((unsigned long)current_set[cpuid] < PAGE_OFFSET) |
| 125 | barrier(); |
| 126 | |
| 127 | while(current_set[cpuid]->cpu != cpuid) |
| 128 | barrier(); |
| 129 | |
| 130 | /* Fix idle thread fields. */ |
| 131 | __asm__ __volatile__("ld [%0], %%g6\n\t" |
| 132 | : : "r" (¤t_set[cpuid]) |
| 133 | : "memory" /* paranoid */); |
| 134 | |
| 135 | cpu_leds[cpuid] = 0x9; |
| 136 | show_leds(cpuid); |
| 137 | |
| 138 | /* Attach to the address space of init_task. */ |
| 139 | atomic_inc(&init_mm.mm_count); |
| 140 | current->active_mm = &init_mm; |
| 141 | |
| 142 | local_flush_cache_all(); |
| 143 | local_flush_tlb_all(); |
| 144 | |
| 145 | local_irq_enable(); /* We don't allow PIL 14 yet */ |
| 146 | |
Bob Breuer | a54123e | 2006-03-23 22:36:19 -0800 | [diff] [blame] | 147 | while (!cpu_isset(cpuid, smp_commenced_mask)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | barrier(); |
| 149 | |
| 150 | spin_lock_irqsave(&sun4d_imsk_lock, flags); |
| 151 | cc_set_imsk(cc_get_imsk() & ~0x4000); /* Allow PIL 14 as well */ |
| 152 | spin_unlock_irqrestore(&sun4d_imsk_lock, flags); |
Rusty Russell | fe73971 | 2009-03-16 14:40:22 +1030 | [diff] [blame] | 153 | set_cpu_online(cpuid, true); |
Raymond Burns | 8b3c848 | 2006-07-17 21:57:09 -0700 | [diff] [blame] | 154 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | } |
| 156 | |
| 157 | extern void init_IRQ(void); |
| 158 | extern void cpu_panic(void); |
| 159 | |
| 160 | /* |
| 161 | * Cycle through the processors asking the PROM to start each one. |
| 162 | */ |
| 163 | |
| 164 | extern struct linux_prom_registers smp_penguin_ctable; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | |
| 166 | void __init smp4d_boot_cpus(void) |
| 167 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | if (boot_cpu_id) |
| 169 | current_set[0] = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | smp_setup_percpu_timer(); |
| 171 | local_flush_cache_all(); |
Raymond Burns | 8b3c848 | 2006-07-17 21:57:09 -0700 | [diff] [blame] | 172 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | |
Al Viro | b4cff84 | 2007-02-01 13:52:33 +0000 | [diff] [blame] | 174 | int __cpuinit smp4d_boot_one_cpu(int i) |
Raymond Burns | 8b3c848 | 2006-07-17 21:57:09 -0700 | [diff] [blame] | 175 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | extern unsigned long sun4d_cpu_startup; |
| 177 | unsigned long *entry = &sun4d_cpu_startup; |
| 178 | struct task_struct *p; |
| 179 | int timeout; |
Raymond Burns | 8b3c848 | 2006-07-17 21:57:09 -0700 | [diff] [blame] | 180 | int cpu_node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | |
Raymond Burns | 8b3c848 | 2006-07-17 21:57:09 -0700 | [diff] [blame] | 182 | cpu_find_by_instance(i, &cpu_node,NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | /* Cook up an idler for this guy. */ |
| 184 | p = fork_idle(i); |
Al Viro | d562ef6 | 2006-01-12 01:05:46 -0800 | [diff] [blame] | 185 | current_set[i] = task_thread_info(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
| 187 | /* |
| 188 | * Initialize the contexts table |
| 189 | * Since the call to prom_startcpu() trashes the structure, |
| 190 | * we need to re-initialize it for each cpu |
| 191 | */ |
| 192 | smp_penguin_ctable.which_io = 0; |
| 193 | smp_penguin_ctable.phys_addr = (unsigned int) srmmu_ctx_table_phys; |
| 194 | smp_penguin_ctable.reg_size = 0; |
| 195 | |
| 196 | /* whirrr, whirrr, whirrrrrrrrr... */ |
Raymond Burns | 8b3c848 | 2006-07-17 21:57:09 -0700 | [diff] [blame] | 197 | SMP_PRINTK(("Starting CPU %d at %p \n", i, entry)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | local_flush_cache_all(); |
Raymond Burns | 8b3c848 | 2006-07-17 21:57:09 -0700 | [diff] [blame] | 199 | prom_startcpu(cpu_node, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | &smp_penguin_ctable, 0, (char *)entry); |
| 201 | |
| 202 | SMP_PRINTK(("prom_startcpu returned :)\n")); |
| 203 | |
| 204 | /* wheee... it's going... */ |
| 205 | for(timeout = 0; timeout < 10000; timeout++) { |
| 206 | if(cpu_callin_map[i]) |
| 207 | break; |
| 208 | udelay(200); |
| 209 | } |
| 210 | |
Raymond Burns | 8b3c848 | 2006-07-17 21:57:09 -0700 | [diff] [blame] | 211 | if (!(cpu_callin_map[i])) { |
| 212 | printk("Processor %d is stuck.\n", i); |
| 213 | return -ENODEV; |
| 214 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | } |
| 216 | local_flush_cache_all(); |
Raymond Burns | 8b3c848 | 2006-07-17 21:57:09 -0700 | [diff] [blame] | 217 | return 0; |
| 218 | } |
| 219 | |
| 220 | void __init smp4d_smp_done(void) |
| 221 | { |
| 222 | int i, first; |
| 223 | int *prev; |
| 224 | |
| 225 | /* setup cpu list for irq rotation */ |
| 226 | first = 0; |
| 227 | prev = &first; |
Rusty Russell | ec7c14b | 2009-03-16 14:40:24 +1030 | [diff] [blame] | 228 | for_each_online_cpu(i) { |
| 229 | *prev = i; |
| 230 | prev = &cpu_data(i).next; |
| 231 | } |
Raymond Burns | 8b3c848 | 2006-07-17 21:57:09 -0700 | [diff] [blame] | 232 | *prev = first; |
| 233 | local_flush_cache_all(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | /* Ok, they are spinning and ready to go. */ |
| 236 | smp_processors_ready = 1; |
| 237 | sun4d_distribute_irqs(); |
| 238 | } |
| 239 | |
| 240 | static struct smp_funcall { |
| 241 | smpfunc_t func; |
| 242 | unsigned long arg1; |
| 243 | unsigned long arg2; |
| 244 | unsigned long arg3; |
| 245 | unsigned long arg4; |
| 246 | unsigned long arg5; |
| 247 | unsigned char processors_in[NR_CPUS]; /* Set when ipi entered. */ |
| 248 | unsigned char processors_out[NR_CPUS]; /* Set when ipi exited. */ |
| 249 | } ccall_info __attribute__((aligned(8))); |
| 250 | |
| 251 | static DEFINE_SPINLOCK(cross_call_lock); |
| 252 | |
| 253 | /* Cross calls must be serialized, at least currently. */ |
David S. Miller | 66e4f8c | 2008-08-27 20:03:22 -0700 | [diff] [blame] | 254 | static void smp4d_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1, |
| 255 | unsigned long arg2, unsigned long arg3, |
| 256 | unsigned long arg4) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | { |
| 258 | if(smp_processors_ready) { |
| 259 | register int high = smp_highest_cpu; |
| 260 | unsigned long flags; |
| 261 | |
| 262 | spin_lock_irqsave(&cross_call_lock, flags); |
| 263 | |
| 264 | { |
| 265 | /* If you make changes here, make sure gcc generates proper code... */ |
| 266 | register smpfunc_t f asm("i0") = func; |
| 267 | register unsigned long a1 asm("i1") = arg1; |
| 268 | register unsigned long a2 asm("i2") = arg2; |
| 269 | register unsigned long a3 asm("i3") = arg3; |
| 270 | register unsigned long a4 asm("i4") = arg4; |
David S. Miller | 66e4f8c | 2008-08-27 20:03:22 -0700 | [diff] [blame] | 271 | register unsigned long a5 asm("i5") = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | |
| 273 | __asm__ __volatile__( |
| 274 | "std %0, [%6]\n\t" |
| 275 | "std %2, [%6 + 8]\n\t" |
| 276 | "std %4, [%6 + 16]\n\t" : : |
| 277 | "r"(f), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5), |
| 278 | "r" (&ccall_info.func)); |
| 279 | } |
| 280 | |
| 281 | /* Init receive/complete mapping, plus fire the IPI's off. */ |
| 282 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | register int i; |
| 284 | |
David S. Miller | 66e4f8c | 2008-08-27 20:03:22 -0700 | [diff] [blame] | 285 | cpu_clear(smp_processor_id(), mask); |
| 286 | cpus_and(mask, cpu_online_map, mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | for(i = 0; i <= high; i++) { |
| 288 | if (cpu_isset(i, mask)) { |
| 289 | ccall_info.processors_in[i] = 0; |
| 290 | ccall_info.processors_out[i] = 0; |
| 291 | sun4d_send_ipi(i, IRQ_CROSS_CALL); |
| 292 | } |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | { |
| 297 | register int i; |
| 298 | |
| 299 | i = 0; |
| 300 | do { |
David S. Miller | 66e4f8c | 2008-08-27 20:03:22 -0700 | [diff] [blame] | 301 | if (!cpu_isset(i, mask)) |
| 302 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | while(!ccall_info.processors_in[i]) |
| 304 | barrier(); |
| 305 | } while(++i <= high); |
| 306 | |
| 307 | i = 0; |
| 308 | do { |
David S. Miller | 66e4f8c | 2008-08-27 20:03:22 -0700 | [diff] [blame] | 309 | if (!cpu_isset(i, mask)) |
| 310 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | while(!ccall_info.processors_out[i]) |
| 312 | barrier(); |
| 313 | } while(++i <= high); |
| 314 | } |
| 315 | |
| 316 | spin_unlock_irqrestore(&cross_call_lock, flags); |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | /* Running cross calls. */ |
| 321 | void smp4d_cross_call_irq(void) |
| 322 | { |
| 323 | int i = hard_smp4d_processor_id(); |
| 324 | |
| 325 | ccall_info.processors_in[i] = 1; |
| 326 | ccall_info.func(ccall_info.arg1, ccall_info.arg2, ccall_info.arg3, |
| 327 | ccall_info.arg4, ccall_info.arg5); |
| 328 | ccall_info.processors_out[i] = 1; |
| 329 | } |
| 330 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | void smp4d_percpu_timer_interrupt(struct pt_regs *regs) |
| 332 | { |
Al Viro | 0d84438 | 2006-10-08 14:30:44 +0100 | [diff] [blame] | 333 | struct pt_regs *old_regs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | int cpu = hard_smp4d_processor_id(); |
| 335 | static int cpu_tick[NR_CPUS]; |
| 336 | static char led_mask[] = { 0xe, 0xd, 0xb, 0x7, 0xb, 0xd }; |
| 337 | |
Al Viro | 0d84438 | 2006-10-08 14:30:44 +0100 | [diff] [blame] | 338 | old_regs = set_irq_regs(regs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | bw_get_prof_limit(cpu); |
| 340 | bw_clear_intr_mask(0, 1); /* INTR_TABLE[0] & 1 is Profile IRQ */ |
| 341 | |
| 342 | cpu_tick[cpu]++; |
| 343 | if (!(cpu_tick[cpu] & 15)) { |
| 344 | if (cpu_tick[cpu] == 0x60) |
| 345 | cpu_tick[cpu] = 0; |
| 346 | cpu_leds[cpu] = led_mask[cpu_tick[cpu] >> 4]; |
| 347 | show_leds(cpu); |
| 348 | } |
| 349 | |
Al Viro | 0d84438 | 2006-10-08 14:30:44 +0100 | [diff] [blame] | 350 | profile_tick(CPU_PROFILING); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | |
| 352 | if(!--prof_counter(cpu)) { |
| 353 | int user = user_mode(regs); |
| 354 | |
| 355 | irq_enter(); |
| 356 | update_process_times(user); |
| 357 | irq_exit(); |
| 358 | |
| 359 | prof_counter(cpu) = prof_multiplier(cpu); |
| 360 | } |
Al Viro | 0d84438 | 2006-10-08 14:30:44 +0100 | [diff] [blame] | 361 | set_irq_regs(old_regs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | } |
| 363 | |
| 364 | extern unsigned int lvl14_resolution; |
| 365 | |
Al Viro | 409832f | 2008-11-22 17:33:54 +0000 | [diff] [blame] | 366 | static void __cpuinit smp_setup_percpu_timer(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | { |
| 368 | int cpu = hard_smp4d_processor_id(); |
| 369 | |
| 370 | prof_counter(cpu) = prof_multiplier(cpu) = 1; |
| 371 | load_profile_irq(cpu, lvl14_resolution); |
| 372 | } |
| 373 | |
| 374 | void __init smp4d_blackbox_id(unsigned *addr) |
| 375 | { |
| 376 | int rd = *addr & 0x3e000000; |
| 377 | |
| 378 | addr[0] = 0xc0800800 | rd; /* lda [%g0] ASI_M_VIKING_TMP1, reg */ |
| 379 | addr[1] = 0x01000000; /* nop */ |
| 380 | addr[2] = 0x01000000; /* nop */ |
| 381 | } |
| 382 | |
| 383 | void __init smp4d_blackbox_current(unsigned *addr) |
| 384 | { |
| 385 | int rd = *addr & 0x3e000000; |
| 386 | |
| 387 | addr[0] = 0xc0800800 | rd; /* lda [%g0] ASI_M_VIKING_TMP1, reg */ |
| 388 | addr[2] = 0x81282002 | rd | (rd >> 11); /* sll reg, 2, reg */ |
| 389 | addr[4] = 0x01000000; /* nop */ |
| 390 | } |
| 391 | |
| 392 | void __init sun4d_init_smp(void) |
| 393 | { |
| 394 | int i; |
| 395 | extern unsigned int t_nmi[], linux_trap_ipi15_sun4d[], linux_trap_ipi15_sun4m[]; |
| 396 | |
| 397 | /* Patch ipi15 trap table */ |
| 398 | t_nmi[1] = t_nmi[1] + (linux_trap_ipi15_sun4d - linux_trap_ipi15_sun4m); |
| 399 | |
| 400 | /* And set btfixup... */ |
| 401 | BTFIXUPSET_BLACKBOX(hard_smp_processor_id, smp4d_blackbox_id); |
| 402 | BTFIXUPSET_BLACKBOX(load_current, smp4d_blackbox_current); |
| 403 | BTFIXUPSET_CALL(smp_cross_call, smp4d_cross_call, BTFIXUPCALL_NORM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | BTFIXUPSET_CALL(__hard_smp_processor_id, __smp4d_processor_id, BTFIXUPCALL_NORM); |
| 405 | |
| 406 | for (i = 0; i < NR_CPUS; i++) { |
| 407 | ccall_info.processors_in[i] = 1; |
| 408 | ccall_info.processors_out[i] = 1; |
| 409 | } |
| 410 | } |