^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* leon_smp.c: Sparc-Leon SMP support.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * based on sun4m_smp.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <asm/head.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/sched/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/threads.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/smp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/kernel_stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/swap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/profile.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/pm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/gfp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/cpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/clockchips.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <asm/cacheflush.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <asm/tlbflush.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <asm/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <linux/atomic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <asm/irq_regs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <asm/traps.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <asm/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <asm/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <asm/page.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include <asm/oplib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include <asm/cpudata.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include <asm/asi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include <asm/leon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include <asm/leon_amba.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include <asm/timer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include "kernel.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include "irq.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) extern ctxd_t *srmmu_ctx_table_phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static int smp_processors_ready;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) extern volatile unsigned long cpu_callin_map[NR_CPUS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) extern cpumask_t smp_commenced_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) void leon_configure_cache_smp(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static void leon_ipi_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* IRQ number of LEON IPIs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) int leon_ipi_irq = LEON3_IRQ_IPI_DEFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static inline unsigned long do_swap(volatile unsigned long *ptr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) unsigned long val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) __asm__ __volatile__("swapa [%2] %3, %0\n\t" : "=&r"(val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) : "0"(val), "r"(ptr), "i"(ASI_LEON_DCACHE_MISS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) : "memory");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) void leon_cpu_pre_starting(void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) leon_configure_cache_smp();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) void leon_cpu_pre_online(void *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) int cpuid = hard_smp_processor_id();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /* Allow master to continue. The master will then give us the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * go-ahead by setting the smp_commenced_mask and will wait without
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * timeouts until our setup is completed fully (signified by
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * our bit being set in the cpu_online_mask).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) do_swap(&cpu_callin_map[cpuid], 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) local_ops->cache_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) local_ops->tlb_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) /* Fix idle thread fields. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) __asm__ __volatile__("ld [%0], %%g6\n\t" : : "r"(¤t_set[cpuid])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) : "memory" /* paranoid */);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) /* Attach to the address space of init_task. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) mmgrab(&init_mm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) current->active_mm = &init_mm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) while (!cpumask_test_cpu(cpuid, &smp_commenced_mask))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) mb();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * Cycle through the processors asking the PROM to start each one.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) extern struct linux_prom_registers smp_penguin_ctable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) void leon_configure_cache_smp(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) unsigned long cfg = sparc_leon3_get_dcachecfg();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) int me = smp_processor_id();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (ASI_LEON3_SYSCTRL_CFG_SSIZE(cfg) > 4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) printk(KERN_INFO "Note: SMP with snooping only works on 4k cache, found %dk(0x%x) on cpu %d, disabling caches\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) (unsigned int)ASI_LEON3_SYSCTRL_CFG_SSIZE(cfg),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) (unsigned int)cfg, (unsigned int)me);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) sparc_leon3_disable_cache();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) if (cfg & ASI_LEON3_SYSCTRL_CFG_SNOOPING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) sparc_leon3_enable_snooping();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) printk(KERN_INFO "Note: You have to enable snooping in the vhdl model cpu %d, disabling caches\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) me);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) sparc_leon3_disable_cache();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) local_ops->cache_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) local_ops->tlb_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) static void leon_smp_setbroadcast(unsigned int mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) int broadcast =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) ((LEON3_BYPASS_LOAD_PA(&(leon3_irqctrl_regs->mpstatus)) >>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) LEON3_IRQMPSTATUS_BROADCAST) & 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) if (!broadcast) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) prom_printf("######## !!!! The irqmp-ctrl must have broadcast enabled, smp wont work !!!!! ####### nr cpus: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) leon_smp_nrcpus());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (leon_smp_nrcpus() > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) prom_printf("continue anyway\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) LEON_BYPASS_STORE_PA(&(leon3_irqctrl_regs->mpbroadcast), mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) int leon_smp_nrcpus(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) int nrcpu =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) ((LEON3_BYPASS_LOAD_PA(&(leon3_irqctrl_regs->mpstatus)) >>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) LEON3_IRQMPSTATUS_CPUNR) & 0xf) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) return nrcpu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) void __init leon_boot_cpus(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) int nrcpu = leon_smp_nrcpus();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) int me = smp_processor_id();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) /* Setup IPI */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) leon_ipi_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) printk(KERN_INFO "%d:(%d:%d) cpus mpirq at 0x%x\n", (unsigned int)me,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) (unsigned int)nrcpu, (unsigned int)NR_CPUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) (unsigned int)&(leon3_irqctrl_regs->mpstatus));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) leon_enable_irq_cpu(LEON3_IRQ_CROSS_CALL, me);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) leon_enable_irq_cpu(LEON3_IRQ_TICKER, me);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) leon_enable_irq_cpu(leon_ipi_irq, me);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) leon_smp_setbroadcast(1 << LEON3_IRQ_TICKER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) leon_configure_cache_smp();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) local_ops->cache_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) int leon_boot_one_cpu(int i, struct task_struct *idle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) int timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) current_set[i] = task_thread_info(idle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) /* See trampoline.S:leon_smp_cpu_startup for details...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * Initialize the contexts table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * Since the call to prom_startcpu() trashes the structure,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * we need to re-initialize it for each cpu
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) smp_penguin_ctable.which_io = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) smp_penguin_ctable.phys_addr = (unsigned int)srmmu_ctx_table_phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) smp_penguin_ctable.reg_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) /* whirrr, whirrr, whirrrrrrrrr... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) printk(KERN_INFO "Starting CPU %d : (irqmp: 0x%x)\n", (unsigned int)i,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) (unsigned int)&leon3_irqctrl_regs->mpstatus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) local_ops->cache_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) /* Make sure all IRQs are of from the start for this new CPU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) LEON_BYPASS_STORE_PA(&leon3_irqctrl_regs->mask[i], 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) /* Wake one CPU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) LEON_BYPASS_STORE_PA(&(leon3_irqctrl_regs->mpstatus), 1 << i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) /* wheee... it's going... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) for (timeout = 0; timeout < 10000; timeout++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if (cpu_callin_map[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) udelay(200);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) printk(KERN_INFO "Started CPU %d\n", (unsigned int)i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) if (!(cpu_callin_map[i])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) printk(KERN_ERR "Processor %d is stuck.\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) leon_enable_irq_cpu(LEON3_IRQ_CROSS_CALL, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) leon_enable_irq_cpu(LEON3_IRQ_TICKER, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) leon_enable_irq_cpu(leon_ipi_irq, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) local_ops->cache_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) void __init leon_smp_done(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) int i, first;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) int *prev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) /* setup cpu list for irq rotation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) first = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) prev = &first;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) for (i = 0; i < NR_CPUS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (cpu_online(i)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) *prev = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) prev = &cpu_data(i).next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) *prev = first;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) local_ops->cache_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) /* Free unneeded trap tables */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) if (!cpu_present(1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) free_reserved_page(virt_to_page(&trapbase_cpu1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) if (!cpu_present(2)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) free_reserved_page(virt_to_page(&trapbase_cpu2));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (!cpu_present(3)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) free_reserved_page(virt_to_page(&trapbase_cpu3));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) /* Ok, they are spinning and ready to go. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) smp_processors_ready = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) struct leon_ipi_work {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) int single;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) int msk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) int resched;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) static DEFINE_PER_CPU_SHARED_ALIGNED(struct leon_ipi_work, leon_ipi_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) /* Initialize IPIs on the LEON, in order to save IRQ resources only one IRQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) * is used for all three types of IPIs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) static void __init leon_ipi_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) int cpu, len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) struct leon_ipi_work *work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) struct property *pp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) struct device_node *rootnp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) struct tt_entry *trap_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) /* Find IPI IRQ or stick with default value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) rootnp = of_find_node_by_path("/ambapp0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) if (rootnp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) pp = of_find_property(rootnp, "ipi_num", &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) if (pp && (*(int *)pp->value))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) leon_ipi_irq = *(int *)pp->value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) printk(KERN_INFO "leon: SMP IPIs at IRQ %d\n", leon_ipi_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) /* Adjust so that we jump directly to smpleon_ipi */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) local_irq_save(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) trap_table = &sparc_ttable[SP_TRAP_IRQ1 + (leon_ipi_irq - 1)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) trap_table->inst_three += smpleon_ipi - real_irq_entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) local_ops->cache_all();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) local_irq_restore(flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) for_each_possible_cpu(cpu) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) work = &per_cpu(leon_ipi_work, cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) work->single = work->msk = work->resched = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) static void leon_send_ipi(int cpu, int level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) unsigned long mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) mask = leon_get_irqmask(level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) LEON3_BYPASS_STORE_PA(&leon3_irqctrl_regs->force[cpu], mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) static void leon_ipi_single(int cpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) struct leon_ipi_work *work = &per_cpu(leon_ipi_work, cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) /* Mark work */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) work->single = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) /* Generate IRQ on the CPU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) leon_send_ipi(cpu, leon_ipi_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) static void leon_ipi_mask_one(int cpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) struct leon_ipi_work *work = &per_cpu(leon_ipi_work, cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) /* Mark work */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) work->msk = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) /* Generate IRQ on the CPU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) leon_send_ipi(cpu, leon_ipi_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) static void leon_ipi_resched(int cpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) struct leon_ipi_work *work = &per_cpu(leon_ipi_work, cpu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) /* Mark work */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) work->resched = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) /* Generate IRQ on the CPU (any IRQ will cause resched) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) leon_send_ipi(cpu, leon_ipi_irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) void leonsmp_ipi_interrupt(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) struct leon_ipi_work *work = this_cpu_ptr(&leon_ipi_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) if (work->single) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) work->single = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) smp_call_function_single_interrupt();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) if (work->msk) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) work->msk = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) smp_call_function_interrupt();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (work->resched) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) work->resched = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) smp_resched_interrupt();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) static struct smp_funcall {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) smpfunc_t func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) unsigned long arg1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) unsigned long arg2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) unsigned long arg3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) unsigned long arg4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) unsigned long arg5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) unsigned long processors_in[NR_CPUS]; /* Set when ipi entered. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) unsigned long processors_out[NR_CPUS]; /* Set when ipi exited. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) } ccall_info __attribute__((aligned(8)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) static DEFINE_SPINLOCK(cross_call_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) /* Cross calls must be serialized, at least currently. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) static void leon_cross_call(smpfunc_t func, cpumask_t mask, unsigned long arg1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) unsigned long arg2, unsigned long arg3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) unsigned long arg4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) if (smp_processors_ready) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) register int high = NR_CPUS - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) spin_lock_irqsave(&cross_call_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) /* If you make changes here, make sure gcc generates proper code... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) register smpfunc_t f asm("i0") = func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) register unsigned long a1 asm("i1") = arg1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) register unsigned long a2 asm("i2") = arg2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) register unsigned long a3 asm("i3") = arg3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) register unsigned long a4 asm("i4") = arg4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) register unsigned long a5 asm("i5") = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) __asm__ __volatile__("std %0, [%6]\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) "std %2, [%6 + 8]\n\t"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) "std %4, [%6 + 16]\n\t" : :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) "r"(f), "r"(a1), "r"(a2), "r"(a3),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) "r"(a4), "r"(a5),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) "r"(&ccall_info.func));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) /* Init receive/complete mapping, plus fire the IPI's off. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) register int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) cpumask_clear_cpu(smp_processor_id(), &mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) cpumask_and(&mask, cpu_online_mask, &mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) for (i = 0; i <= high; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) if (cpumask_test_cpu(i, &mask)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) ccall_info.processors_in[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) ccall_info.processors_out[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) leon_send_ipi(i, LEON3_IRQ_CROSS_CALL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) register int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) if (!cpumask_test_cpu(i, &mask))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) while (!ccall_info.processors_in[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) barrier();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) } while (++i <= high);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) if (!cpumask_test_cpu(i, &mask))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) while (!ccall_info.processors_out[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) barrier();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) } while (++i <= high);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) spin_unlock_irqrestore(&cross_call_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) /* Running cross calls. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) void leon_cross_call_irq(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) int i = smp_processor_id();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) ccall_info.processors_in[i] = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) ccall_info.func(ccall_info.arg1, ccall_info.arg2, ccall_info.arg3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) ccall_info.arg4, ccall_info.arg5);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) ccall_info.processors_out[i] = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) static const struct sparc32_ipi_ops leon_ipi_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) .cross_call = leon_cross_call,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) .resched = leon_ipi_resched,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) .single = leon_ipi_single,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) .mask_one = leon_ipi_mask_one,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) void __init leon_init_smp(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) /* Patch ipi15 trap table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) t_nmi[1] = t_nmi[1] + (linux_trap_ipi15_leon - linux_trap_ipi15_sun4m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) sparc32_ipi_ops = &leon_ipi_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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