diff options
Diffstat (limited to 'arch/mips/loongson/loongson-3')
| -rw-r--r-- | arch/mips/loongson/loongson-3/Makefile | 10 | ||||
| -rw-r--r-- | arch/mips/loongson/loongson-3/cop2-ex.c | 63 | ||||
| -rw-r--r-- | arch/mips/loongson/loongson-3/hpet.c | 257 | ||||
| -rw-r--r-- | arch/mips/loongson/loongson-3/irq.c | 143 | ||||
| -rw-r--r-- | arch/mips/loongson/loongson-3/numa.c | 296 | ||||
| -rw-r--r-- | arch/mips/loongson/loongson-3/platform.c | 43 | ||||
| -rw-r--r-- | arch/mips/loongson/loongson-3/smp.c | 652 | ||||
| -rw-r--r-- | arch/mips/loongson/loongson-3/smp.h | 30 |
8 files changed, 0 insertions, 1494 deletions
diff --git a/arch/mips/loongson/loongson-3/Makefile b/arch/mips/loongson/loongson-3/Makefile deleted file mode 100644 index 622fead5ebc9..000000000000 --- a/arch/mips/loongson/loongson-3/Makefile +++ /dev/null @@ -1,10 +0,0 @@ -# -# Makefile for Loongson-3 family machines -# -obj-y += irq.o cop2-ex.o platform.o - -obj-$(CONFIG_SMP) += smp.o - -obj-$(CONFIG_NUMA) += numa.o - -obj-$(CONFIG_RS780_HPET) += hpet.o diff --git a/arch/mips/loongson/loongson-3/cop2-ex.c b/arch/mips/loongson/loongson-3/cop2-ex.c deleted file mode 100644 index ea13764d0a03..000000000000 --- a/arch/mips/loongson/loongson-3/cop2-ex.c +++ /dev/null @@ -1,63 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2014 Lemote Corporation. - * written by Huacai Chen <chenhc@lemote.com> - * - * based on arch/mips/cavium-octeon/cpu.c - * Copyright (C) 2009 Wind River Systems, - * written by Ralf Baechle <ralf@linux-mips.org> - */ -#include <linux/init.h> -#include <linux/sched.h> -#include <linux/notifier.h> - -#include <asm/fpu.h> -#include <asm/cop2.h> -#include <asm/current.h> -#include <asm/mipsregs.h> - -static int loongson_cu2_call(struct notifier_block *nfb, unsigned long action, - void *data) -{ - int fpu_owned; - int fr = !test_thread_flag(TIF_32BIT_FPREGS); - - switch (action) { - case CU2_EXCEPTION: - preempt_disable(); - fpu_owned = __is_fpu_owner(); - if (!fr) - set_c0_status(ST0_CU1 | ST0_CU2); - else - set_c0_status(ST0_CU1 | ST0_CU2 | ST0_FR); - enable_fpu_hazard(); - KSTK_STATUS(current) |= (ST0_CU1 | ST0_CU2); - if (fr) - KSTK_STATUS(current) |= ST0_FR; - else - KSTK_STATUS(current) &= ~ST0_FR; - /* If FPU is owned, we needn't init or restore fp */ - if (!fpu_owned) { - set_thread_flag(TIF_USEDFPU); - if (!used_math()) { - _init_fpu(current->thread.fpu.fcr31); - set_used_math(); - } else - _restore_fp(current); - } - preempt_enable(); - - return NOTIFY_STOP; /* Don't call default notifier */ - } - - return NOTIFY_OK; /* Let default notifier send signals */ -} - -static int __init loongson_cu2_setup(void) -{ - return cu2_notifier(loongson_cu2_call, 0); -} -early_initcall(loongson_cu2_setup); diff --git a/arch/mips/loongson/loongson-3/hpet.c b/arch/mips/loongson/loongson-3/hpet.c deleted file mode 100644 index 5c21cd3bd339..000000000000 --- a/arch/mips/loongson/loongson-3/hpet.c +++ /dev/null @@ -1,257 +0,0 @@ -#include <linux/init.h> -#include <linux/pci.h> -#include <linux/percpu.h> -#include <linux/delay.h> -#include <linux/spinlock.h> -#include <linux/interrupt.h> - -#include <asm/hpet.h> -#include <asm/time.h> - -#define SMBUS_CFG_BASE (loongson_sysconf.ht_control_base + 0x0300a000) -#define SMBUS_PCI_REG40 0x40 -#define SMBUS_PCI_REG64 0x64 -#define SMBUS_PCI_REGB4 0xb4 - -static DEFINE_SPINLOCK(hpet_lock); -DEFINE_PER_CPU(struct clock_event_device, hpet_clockevent_device); - -static unsigned int smbus_read(int offset) -{ - return *(volatile unsigned int *)(SMBUS_CFG_BASE + offset); -} - -static void smbus_write(int offset, int data) -{ - *(volatile unsigned int *)(SMBUS_CFG_BASE + offset) = data; -} - -static void smbus_enable(int offset, int bit) -{ - unsigned int cfg = smbus_read(offset); - - cfg |= bit; - smbus_write(offset, cfg); -} - -static int hpet_read(int offset) -{ - return *(volatile unsigned int *)(HPET_MMIO_ADDR + offset); -} - -static void hpet_write(int offset, int data) -{ - *(volatile unsigned int *)(HPET_MMIO_ADDR + offset) = data; -} - -static void hpet_start_counter(void) -{ - unsigned int cfg = hpet_read(HPET_CFG); - - cfg |= HPET_CFG_ENABLE; - hpet_write(HPET_CFG, cfg); -} - -static void hpet_stop_counter(void) -{ - unsigned int cfg = hpet_read(HPET_CFG); - - cfg &= ~HPET_CFG_ENABLE; - hpet_write(HPET_CFG, cfg); -} - -static void hpet_reset_counter(void) -{ - hpet_write(HPET_COUNTER, 0); - hpet_write(HPET_COUNTER + 4, 0); -} - -static void hpet_restart_counter(void) -{ - hpet_stop_counter(); - hpet_reset_counter(); - hpet_start_counter(); -} - -static void hpet_enable_legacy_int(void) -{ - /* Do nothing on Loongson-3 */ -} - -static void hpet_set_mode(enum clock_event_mode mode, - struct clock_event_device *evt) -{ - int cfg = 0; - - spin_lock(&hpet_lock); - switch (mode) { - case CLOCK_EVT_MODE_PERIODIC: - pr_info("set clock event to periodic mode!\n"); - /* stop counter */ - hpet_stop_counter(); - - /* enables the timer0 to generate a periodic interrupt */ - cfg = hpet_read(HPET_T0_CFG); - cfg &= ~HPET_TN_LEVEL; - cfg |= HPET_TN_ENABLE | HPET_TN_PERIODIC | - HPET_TN_SETVAL | HPET_TN_32BIT; - hpet_write(HPET_T0_CFG, cfg); - - /* set the comparator */ - hpet_write(HPET_T0_CMP, HPET_COMPARE_VAL); - udelay(1); - hpet_write(HPET_T0_CMP, HPET_COMPARE_VAL); - - /* start counter */ - hpet_start_counter(); - break; - case CLOCK_EVT_MODE_SHUTDOWN: - case CLOCK_EVT_MODE_UNUSED: - cfg = hpet_read(HPET_T0_CFG); - cfg &= ~HPET_TN_ENABLE; - hpet_write(HPET_T0_CFG, cfg); - break; - case CLOCK_EVT_MODE_ONESHOT: - pr_info("set clock event to one shot mode!\n"); - cfg = hpet_read(HPET_T0_CFG); - /* set timer0 type - * 1 : periodic interrupt - * 0 : non-periodic(oneshot) interrupt - */ - cfg &= ~HPET_TN_PERIODIC; - cfg |= HPET_TN_ENABLE | HPET_TN_32BIT; - hpet_write(HPET_T0_CFG, cfg); - break; - case CLOCK_EVT_MODE_RESUME: - hpet_enable_legacy_int(); - break; - } - spin_unlock(&hpet_lock); -} - -static int hpet_next_event(unsigned long delta, - struct clock_event_device *evt) -{ - unsigned int cnt; - int res; - - cnt = hpet_read(HPET_COUNTER); - cnt += delta; - hpet_write(HPET_T0_CMP, cnt); - - res = ((int)(hpet_read(HPET_COUNTER) - cnt) > 0) ? -ETIME : 0; - return res; -} - -static irqreturn_t hpet_irq_handler(int irq, void *data) -{ - int is_irq; - struct clock_event_device *cd; - unsigned int cpu = smp_processor_id(); - - is_irq = hpet_read(HPET_STATUS); - if (is_irq & HPET_T0_IRS) { - /* clear the TIMER0 irq status register */ - hpet_write(HPET_STATUS, HPET_T0_IRS); - cd = &per_cpu(hpet_clockevent_device, cpu); - cd->event_handler(cd); - return IRQ_HANDLED; - } - return IRQ_NONE; -} - -static struct irqaction hpet_irq = { - .handler = hpet_irq_handler, - .flags = IRQF_NOBALANCING | IRQF_TIMER, - .name = "hpet", -}; - -/* - * hpet address assignation and irq setting should be done in bios. - * but pmon don't do this, we just setup here directly. - * The operation under is normal. unfortunately, hpet_setup process - * is before pci initialize. - * - * { - * struct pci_dev *pdev; - * - * pdev = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS, NULL); - * pci_write_config_word(pdev, SMBUS_PCI_REGB4, HPET_ADDR); - * - * ... - * } - */ -static void hpet_setup(void) -{ - /* set hpet base address */ - smbus_write(SMBUS_PCI_REGB4, HPET_ADDR); - - /* enable decodeing of access to HPET MMIO*/ - smbus_enable(SMBUS_PCI_REG40, (1 << 28)); - - /* HPET irq enable */ - smbus_enable(SMBUS_PCI_REG64, (1 << 10)); - - hpet_enable_legacy_int(); -} - -void __init setup_hpet_timer(void) -{ - unsigned int cpu = smp_processor_id(); - struct clock_event_device *cd; - - hpet_setup(); - - cd = &per_cpu(hpet_clockevent_device, cpu); - cd->name = "hpet"; - cd->rating = 320; - cd->features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT; - cd->set_mode = hpet_set_mode; - cd->set_next_event = hpet_next_event; - cd->irq = HPET_T0_IRQ; - cd->cpumask = cpumask_of(cpu); - clockevent_set_clock(cd, HPET_FREQ); - cd->max_delta_ns = clockevent_delta2ns(0x7fffffff, cd); - cd->min_delta_ns = 5000; - - clockevents_register_device(cd); - setup_irq(HPET_T0_IRQ, &hpet_irq); - pr_info("hpet clock event device register\n"); -} - -static cycle_t hpet_read_counter(struct clocksource *cs) -{ - return (cycle_t)hpet_read(HPET_COUNTER); -} - -static void hpet_suspend(struct clocksource *cs) -{ -} - -static void hpet_resume(struct clocksource *cs) -{ - hpet_setup(); - hpet_restart_counter(); -} - -static struct clocksource csrc_hpet = { - .name = "hpet", - /* mips clocksource rating is less than 300, so hpet is better. */ - .rating = 300, - .read = hpet_read_counter, - .mask = CLOCKSOURCE_MASK(32), - /* oneshot mode work normal with this flag */ - .flags = CLOCK_SOURCE_IS_CONTINUOUS, - .suspend = hpet_suspend, - .resume = hpet_resume, - .mult = 0, - .shift = 10, -}; - -int __init init_hpet_clocksource(void) -{ - csrc_hpet.mult = clocksource_hz2mult(HPET_FREQ, csrc_hpet.shift); - return clocksource_register_hz(&csrc_hpet, HPET_FREQ); -} - -arch_initcall(init_hpet_clocksource); diff --git a/arch/mips/loongson/loongson-3/irq.c b/arch/mips/loongson/loongson-3/irq.c deleted file mode 100644 index 0f75b6b3d218..000000000000 --- a/arch/mips/loongson/loongson-3/irq.c +++ /dev/null @@ -1,143 +0,0 @@ -#include <loongson.h> -#include <irq.h> -#include <linux/interrupt.h> -#include <linux/module.h> - -#include <asm/irq_cpu.h> -#include <asm/i8259.h> -#include <asm/mipsregs.h> - -#include "smp.h" - -unsigned int ht_irq[] = {0, 1, 3, 4, 5, 6, 7, 8, 12, 14, 15}; - -static void ht_irqdispatch(void) -{ - unsigned int i, irq; - - irq = LOONGSON_HT1_INT_VECTOR(0); - LOONGSON_HT1_INT_VECTOR(0) = irq; /* Acknowledge the IRQs */ - - for (i = 0; i < ARRAY_SIZE(ht_irq); i++) { - if (irq & (0x1 << ht_irq[i])) - do_IRQ(ht_irq[i]); - } -} - -void mach_irq_dispatch(unsigned int pending) -{ - if (pending & CAUSEF_IP7) - do_IRQ(LOONGSON_TIMER_IRQ); -#if defined(CONFIG_SMP) - else if (pending & CAUSEF_IP6) - loongson3_ipi_interrupt(NULL); -#endif - else if (pending & CAUSEF_IP3) - ht_irqdispatch(); - else if (pending & CAUSEF_IP2) - do_IRQ(LOONGSON_UART_IRQ); - else { - pr_err("%s : spurious interrupt\n", __func__); - spurious_interrupt(); - } -} - -static struct irqaction cascade_irqaction = { - .handler = no_action, - .flags = IRQF_NO_SUSPEND, - .name = "cascade", -}; - -static inline void mask_loongson_irq(struct irq_data *d) -{ - clear_c0_status(0x100 << (d->irq - MIPS_CPU_IRQ_BASE)); - irq_disable_hazard(); - - /* Workaround: UART IRQ may deliver to any core */ - if (d->irq == LOONGSON_UART_IRQ) { - int cpu = smp_processor_id(); - int node_id = cpu_logical_map(cpu) / loongson_sysconf.cores_per_node; - int core_id = cpu_logical_map(cpu) % loongson_sysconf.cores_per_node; - u64 intenclr_addr = smp_group[node_id] | - (u64)(&LOONGSON_INT_ROUTER_INTENCLR); - u64 introuter_lpc_addr = smp_group[node_id] | - (u64)(&LOONGSON_INT_ROUTER_LPC); - - *(volatile u32 *)intenclr_addr = 1 << 10; - *(volatile u8 *)introuter_lpc_addr = 0x10 + (1<<core_id); - } -} - -static inline void unmask_loongson_irq(struct irq_data *d) -{ - /* Workaround: UART IRQ may deliver to any core */ - if (d->irq == LOONGSON_UART_IRQ) { - int cpu = smp_processor_id(); - int node_id = cpu_logical_map(cpu) / loongson_sysconf.cores_per_node; - int core_id = cpu_logical_map(cpu) % loongson_sysconf.cores_per_node; - u64 intenset_addr = smp_group[node_id] | - (u64)(&LOONGSON_INT_ROUTER_INTENSET); - u64 introuter_lpc_addr = smp_group[node_id] | - (u64)(&LOONGSON_INT_ROUTER_LPC); - - *(volatile u32 *)intenset_addr = 1 << 10; - *(volatile u8 *)introuter_lpc_addr = 0x10 + (1<<core_id); - } - - set_c0_status(0x100 << (d->irq - MIPS_CPU_IRQ_BASE)); - irq_enable_hazard(); -} - - /* For MIPS IRQs which shared by all cores */ -static struct irq_chip loongson_irq_chip = { - .name = "Loongson", - .irq_ack = mask_loongson_irq, - .irq_mask = mask_loongson_irq, - .irq_mask_ack = mask_loongson_irq, - .irq_unmask = unmask_loongson_irq, - .irq_eoi = unmask_loongson_irq, -}; - -void irq_router_init(void) -{ - int i; - - /* route LPC int to cpu core0 int 0 */ - LOONGSON_INT_ROUTER_LPC = - LOONGSON_INT_COREx_INTy(loongson_sysconf.boot_cpu_id, 0); - /* route HT1 int0 ~ int7 to cpu core0 INT1*/ - for (i = 0; i < 8; i++) - LOONGSON_INT_ROUTER_HT1(i) = - LOONGSON_INT_COREx_INTy(loongson_sysconf.boot_cpu_id, 1); - /* enable HT1 interrupt */ - LOONGSON_HT1_INTN_EN(0) = 0xffffffff; - /* enable router interrupt intenset */ - LOONGSON_INT_ROUTER_INTENSET = - LOONGSON_INT_ROUTER_INTEN | (0xffff << 16) | 0x1 << 10; -} - -void __init mach_init_irq(void) -{ - clear_c0_status(ST0_IM | ST0_BEV); - - irq_router_init(); - mips_cpu_irq_init(); - init_i8259_irqs(); - irq_set_chip_and_handler(LOONGSON_UART_IRQ, - &loongson_irq_chip, handle_level_irq); - - /* setup HT1 irq */ - setup_irq(LOONGSON_HT1_IRQ, &cascade_irqaction); - - set_c0_status(STATUSF_IP2 | STATUSF_IP6); -} - -#ifdef CONFIG_HOTPLUG_CPU - -void fixup_irqs(void) -{ - irq_cpu_offline(); - clear_c0_status(ST0_IM); -} - -#endif diff --git a/arch/mips/loongson/loongson-3/numa.c b/arch/mips/loongson/loongson-3/numa.c deleted file mode 100644 index 12d14ed48778..000000000000 --- a/arch/mips/loongson/loongson-3/numa.c +++ /dev/null @@ -1,296 +0,0 @@ -/* - * Copyright (C) 2010 Loongson Inc. & Lemote Inc. & - * Insititute of Computing Technology - * Author: Xiang Gao, gaoxiang@ict.ac.cn - * Huacai Chen, chenhc@lemote.com - * Xiaofu Meng, Shuangshuang Zhang - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/mmzone.h> -#include <linux/module.h> -#include <linux/nodemask.h> -#include <linux/swap.h> -#include <linux/memblock.h> -#include <linux/bootmem.h> -#include <linux/pfn.h> -#include <linux/highmem.h> -#include <asm/page.h> -#include <asm/pgalloc.h> -#include <asm/sections.h> -#include <linux/irq.h> -#include <asm/bootinfo.h> -#include <asm/mc146818-time.h> -#include <asm/time.h> -#include <asm/wbflush.h> -#include <boot_param.h> - -static struct node_data prealloc__node_data[MAX_NUMNODES]; -unsigned char __node_distances[MAX_NUMNODES][MAX_NUMNODES]; -EXPORT_SYMBOL(__node_distances); -struct node_data *__node_data[MAX_NUMNODES]; -EXPORT_SYMBOL(__node_data); - -static void enable_lpa(void) -{ - unsigned long value; - - value = __read_32bit_c0_register($16, 3); - value |= 0x00000080; - __write_32bit_c0_register($16, 3, value); - value = __read_32bit_c0_register($16, 3); - pr_info("CP0_Config3: CP0 16.3 (0x%lx)\n", value); - - value = __read_32bit_c0_register($5, 1); - value |= 0x20000000; - __write_32bit_c0_register($5, 1, value); - value = __read_32bit_c0_register($5, 1); - pr_info("CP0_PageGrain: CP0 5.1 (0x%lx)\n", value); -} - -static void cpu_node_probe(void) -{ - int i; - - nodes_clear(node_possible_map); - nodes_clear(node_online_map); - for (i = 0; i < loongson_sysconf.nr_nodes; i++) { - node_set_state(num_online_nodes(), N_POSSIBLE); - node_set_online(num_online_nodes()); - } - - pr_info("NUMA: Discovered %d cpus on %d nodes\n", - loongson_sysconf.nr_cpus, num_online_nodes()); -} - -static int __init compute_node_distance(int row, int col) -{ - int package_row = row * loongson_sysconf.cores_per_node / - loongson_sysconf.cores_per_package; - int package_col = col * loongson_sysconf.cores_per_node / - loongson_sysconf.cores_per_package; - - if (col == row) - return 0; - else if (package_row == package_col) - return 40; - else - return 100; -} - -static void __init init_topology_matrix(void) -{ - int row, col; - - for (row = 0; row < MAX_NUMNODES; row++) - for (col = 0; col < MAX_NUMNODES; col++) - __node_distances[row][col] = -1; - - for_each_online_node(row) { - for_each_online_node(col) { - __node_distances[row][col] = - compute_node_distance(row, col); - } - } -} - -static unsigned long nid_to_addroffset(unsigned int nid) -{ - unsigned long result; - switch (nid) { - case 0: - default: - result = NODE0_ADDRSPACE_OFFSET; - break; - case 1: - result = NODE1_ADDRSPACE_OFFSET; - break; - case 2: - result = NODE2_ADDRSPACE_OFFSET; - break; - case 3: - result = NODE3_ADDRSPACE_OFFSET; - break; - } - return result; -} - -static void __init szmem(unsigned int node) -{ - u32 i, mem_type; - static unsigned long num_physpages = 0; - u64 node_id, node_psize, start_pfn, end_pfn, mem_start, mem_size; - - /* Parse memory information and activate */ - for (i = 0; i < loongson_memmap->nr_map; i++) { - node_id = loongson_memmap->map[i].node_id; - if (node_id != node) - continue; - - mem_type = loongson_memmap->map[i].mem_type; - mem_size = loongson_memmap->map[i].mem_size; - mem_start = loongson_memmap->map[i].mem_start; - - switch (mem_type) { - case SYSTEM_RAM_LOW: - start_pfn = ((node_id << 44) + mem_start) >> PAGE_SHIFT; - node_psize = (mem_size << 20) >> PAGE_SHIFT; - end_pfn = start_pfn + node_psize; - num_physpages += node_psize; - pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n", - (u32)node_id, mem_type, mem_start, mem_size); - pr_info(" start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n", - start_pfn, end_pfn, num_physpages); - add_memory_region((node_id << 44) + mem_start, - (u64)mem_size << 20, BOOT_MEM_RAM); - memblock_add_node(PFN_PHYS(start_pfn), - PFN_PHYS(end_pfn - start_pfn), node); - break; - case SYSTEM_RAM_HIGH: - start_pfn = ((node_id << 44) + mem_start) >> PAGE_SHIFT; - node_psize = (mem_size << 20) >> PAGE_SHIFT; - end_pfn = start_pfn + node_psize; - num_physpages += node_psize; - pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n", - (u32)node_id, mem_type, mem_start, mem_size); - pr_info(" start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n", - start_pfn, end_pfn, num_physpages); - add_memory_region((node_id << 44) + mem_start, - (u64)mem_size << 20, BOOT_MEM_RAM); - memblock_add_node(PFN_PHYS(start_pfn), - PFN_PHYS(end_pfn - start_pfn), node); - break; - case MEM_RESERVED: - pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n", - (u32)node_id, mem_type, mem_start, mem_size); - add_memory_region((node_id << 44) + mem_start, - (u64)mem_size << 20, BOOT_MEM_RESERVED); - memblock_reserve(((node_id << 44) + mem_start), - mem_size << 20); - break; - } - } -} - -static void __init node_mem_init(unsigned int node) -{ - unsigned long bootmap_size; - unsigned long node_addrspace_offset; - unsigned long start_pfn, end_pfn, freepfn; - - node_addrspace_offset = nid_to_addroffset(node); - pr_info("Node%d's addrspace_offset is 0x%lx\n", - node, node_addrspace_offset); - - get_pfn_range_for_nid(node, &start_pfn, &end_pfn); - freepfn = start_pfn; - if (node == 0) - freepfn = PFN_UP(__pa_symbol(&_end)); /* kernel end address */ - pr_info("Node%d: start_pfn=0x%lx, end_pfn=0x%lx, freepfn=0x%lx\n", - node, start_pfn, end_pfn, freepfn); - - __node_data[node] = prealloc__node_data + node; - - NODE_DATA(node)->bdata = &bootmem_node_data[node]; - NODE_DATA(node)->node_start_pfn = start_pfn; - NODE_DATA(node)->node_spanned_pages = end_pfn - start_pfn; - - bootmap_size = init_bootmem_node(NODE_DATA(node), freepfn, - start_pfn, end_pfn); - free_bootmem_with_active_regions(node, end_pfn); - if (node == 0) /* used by finalize_initrd() */ - max_low_pfn = end_pfn; - - /* This is reserved for the kernel and bdata->node_bootmem_map */ - reserve_bootmem_node(NODE_DATA(node), start_pfn << PAGE_SHIFT, - ((freepfn - start_pfn) << PAGE_SHIFT) + bootmap_size, - BOOTMEM_DEFAULT); - - if (node == 0 && node_end_pfn(0) >= (0xffffffff >> PAGE_SHIFT)) { - /* Reserve 0xff800000~0xffffffff for RS780E integrated GPU */ - reserve_bootmem_node(NODE_DATA(node), - (node_addrspace_offset | 0xff800000), - 8 << 20, BOOTMEM_DEFAULT); - } - - sparse_memory_present_with_active_regions(node); -} - -static __init void prom_meminit(void) -{ - unsigned int node, cpu, active_cpu = 0; - - cpu_node_probe(); - init_topology_matrix(); - - for (node = 0; node < loongson_sysconf.nr_nodes; node++) { - if (node_online(node)) { - szmem(node); - node_mem_init(node); - cpumask_clear(&__node_data[(node)]->cpumask); - } - } - for (cpu = 0; cpu < loongson_sysconf.nr_cpus; cpu++) { - node = cpu / loongson_sysconf.cores_per_node; - if (node >= num_online_nodes()) - node = 0; - - if (loongson_sysconf.reserved_cpus_mask & (1<<cpu)) - continue; - - cpumask_set_cpu(active_cpu, &__node_data[(node)]->cpumask); - pr_info("NUMA: set cpumask cpu %d on node %d\n", active_cpu, node); - - active_cpu++; - } -} - -void __init paging_init(void) -{ - unsigned node; - unsigned long zones_size[MAX_NR_ZONES] = {0, }; - - pagetable_init(); - - for_each_online_node(node) { - unsigned long start_pfn, end_pfn; - - get_pfn_range_for_nid(node, &start_pfn, &end_pfn); - - if (end_pfn > max_low_pfn) - max_low_pfn = end_pfn; - } -#ifdef CONFIG_ZONE_DMA32 - zones_size[ZONE_DMA32] = MAX_DMA32_PFN; -#endif - zones_size[ZONE_NORMAL] = max_low_pfn; - free_area_init_nodes(zones_size); -} - -void __init mem_init(void) -{ - high_memory = (void *) __va(get_num_physpages() << PAGE_SHIFT); - free_all_bootmem(); - setup_zero_pages(); /* This comes from node 0 */ - mem_init_print_info(NULL); -} - -/* All PCI device belongs to logical Node-0 */ -int pcibus_to_node(struct pci_bus *bus) -{ - return 0; -} -EXPORT_SYMBOL(pcibus_to_node); - -void __init prom_init_numa_memory(void) -{ - enable_lpa(); - prom_meminit(); -} -EXPORT_SYMBOL(prom_init_numa_memory); diff --git a/arch/mips/loongson/loongson-3/platform.c b/arch/mips/loongson/loongson-3/platform.c deleted file mode 100644 index 25a97cc0ee33..000000000000 --- a/arch/mips/loongson/loongson-3/platform.c +++ /dev/null @@ -1,43 +0,0 @@ -/* - * Copyright (C) 2009 Lemote Inc. - * Author: Wu Zhangjin, wuzhangjin@gmail.com - * Xiang Yu, xiangy@lemote.com - * Chen Huacai, chenhc@lemote.com - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ - -#include <linux/err.h> -#include <linux/slab.h> -#include <linux/platform_device.h> -#include <asm/bootinfo.h> -#include <boot_param.h> -#include <loongson_hwmon.h> -#include <workarounds.h> - -static int __init loongson3_platform_init(void) -{ - int i; - struct platform_device *pdev; - - if (loongson_sysconf.ecname[0] != '\0') - platform_device_register_simple(loongson_sysconf.ecname, -1, NULL, 0); - - for (i = 0; i < loongson_sysconf.nr_sensors; i++) { - if (loongson_sysconf.sensors[i].type > SENSOR_FAN) - continue; - - pdev = kzalloc(sizeof(struct platform_device), GFP_KERNEL); - pdev->name = loongson_sysconf.sensors[i].name; - pdev->id = loongson_sysconf.sensors[i].id; - pdev->dev.platform_data = &loongson_sysconf.sensors[i]; - platform_device_register(pdev); - } - - return 0; -} - -arch_initcall(loongson3_platform_init); diff --git a/arch/mips/loongson/loongson-3/smp.c b/arch/mips/loongson/loongson-3/smp.c deleted file mode 100644 index 509877c6e9d9..000000000000 --- a/arch/mips/loongson/loongson-3/smp.c +++ /dev/null @@ -1,652 +0,0 @@ -/* - * Copyright (C) 2010, 2011, 2012, Lemote, Inc. - * Author: Chen Huacai, chenhc@lemote.com - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - */ - -#include <linux/init.h> -#include <linux/cpu.h> -#include <linux/sched.h> -#include <linux/smp.h> -#include <linux/cpufreq.h> -#include <asm/processor.h> -#include <asm/time.h> -#include <asm/clock.h> -#include <asm/tlbflush.h> -#include <asm/cacheflush.h> -#include <loongson.h> -#include <workarounds.h> - -#include "smp.h" - -DEFINE_PER_CPU(int, cpu_state); -DEFINE_PER_CPU(uint32_t, core0_c0count); - -static void *ipi_set0_regs[16]; -static void *ipi_clear0_regs[16]; -static void *ipi_status0_regs[16]; -static void *ipi_en0_regs[16]; -static void *ipi_mailbox_buf[16]; - -/* read a 32bit value from ipi register */ -#define loongson3_ipi_read32(addr) readl(addr) -/* read a 64bit value from ipi register */ -#define loongson3_ipi_read64(addr) readq(addr) -/* write a 32bit value to ipi register */ -#define loongson3_ipi_write32(action, addr) \ - do { \ - writel(action, addr); \ - __wbflush(); \ - } while (0) -/* write a 64bit value to ipi register */ -#define loongson3_ipi_write64(action, addr) \ - do { \ - writeq(action, addr); \ - __wbflush(); \ - } while (0) - -static void ipi_set0_regs_init(void) -{ - ipi_set0_regs[0] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE0_OFFSET + SET0); - ipi_set0_regs[1] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE1_OFFSET + SET0); - ipi_set0_regs[2] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE2_OFFSET + SET0); - ipi_set0_regs[3] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE3_OFFSET + SET0); - ipi_set0_regs[4] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE0_OFFSET + SET0); - ipi_set0_regs[5] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE1_OFFSET + SET0); - ipi_set0_regs[6] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE2_OFFSET + SET0); - ipi_set0_regs[7] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE3_OFFSET + SET0); - ipi_set0_regs[8] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE0_OFFSET + SET0); - ipi_set0_regs[9] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE1_OFFSET + SET0); - ipi_set0_regs[10] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE2_OFFSET + SET0); - ipi_set0_regs[11] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE3_OFFSET + SET0); - ipi_set0_regs[12] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE0_OFFSET + SET0); - ipi_set0_regs[13] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE1_OFFSET + SET0); - ipi_set0_regs[14] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE2_OFFSET + SET0); - ipi_set0_regs[15] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE3_OFFSET + SET0); -} - -static void ipi_clear0_regs_init(void) -{ - ipi_clear0_regs[0] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE0_OFFSET + CLEAR0); - ipi_clear0_regs[1] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE1_OFFSET + CLEAR0); - ipi_clear0_regs[2] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE2_OFFSET + CLEAR0); - ipi_clear0_regs[3] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE3_OFFSET + CLEAR0); - ipi_clear0_regs[4] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE0_OFFSET + CLEAR0); - ipi_clear0_regs[5] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE1_OFFSET + CLEAR0); - ipi_clear0_regs[6] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE2_OFFSET + CLEAR0); - ipi_clear0_regs[7] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE3_OFFSET + CLEAR0); - ipi_clear0_regs[8] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE0_OFFSET + CLEAR0); - ipi_clear0_regs[9] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE1_OFFSET + CLEAR0); - ipi_clear0_regs[10] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE2_OFFSET + CLEAR0); - ipi_clear0_regs[11] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE3_OFFSET + CLEAR0); - ipi_clear0_regs[12] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE0_OFFSET + CLEAR0); - ipi_clear0_regs[13] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE1_OFFSET + CLEAR0); - ipi_clear0_regs[14] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE2_OFFSET + CLEAR0); - ipi_clear0_regs[15] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE3_OFFSET + CLEAR0); -} - -static void ipi_status0_regs_init(void) -{ - ipi_status0_regs[0] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE0_OFFSET + STATUS0); - ipi_status0_regs[1] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE1_OFFSET + STATUS0); - ipi_status0_regs[2] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE2_OFFSET + STATUS0); - ipi_status0_regs[3] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE3_OFFSET + STATUS0); - ipi_status0_regs[4] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE0_OFFSET + STATUS0); - ipi_status0_regs[5] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE1_OFFSET + STATUS0); - ipi_status0_regs[6] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE2_OFFSET + STATUS0); - ipi_status0_regs[7] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE3_OFFSET + STATUS0); - ipi_status0_regs[8] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE0_OFFSET + STATUS0); - ipi_status0_regs[9] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE1_OFFSET + STATUS0); - ipi_status0_regs[10] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE2_OFFSET + STATUS0); - ipi_status0_regs[11] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE3_OFFSET + STATUS0); - ipi_status0_regs[12] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE0_OFFSET + STATUS0); - ipi_status0_regs[13] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE1_OFFSET + STATUS0); - ipi_status0_regs[14] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE2_OFFSET + STATUS0); - ipi_status0_regs[15] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE3_OFFSET + STATUS0); -} - -static void ipi_en0_regs_init(void) -{ - ipi_en0_regs[0] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE0_OFFSET + EN0); - ipi_en0_regs[1] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE1_OFFSET + EN0); - ipi_en0_regs[2] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE2_OFFSET + EN0); - ipi_en0_regs[3] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE3_OFFSET + EN0); - ipi_en0_regs[4] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE0_OFFSET + EN0); - ipi_en0_regs[5] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE1_OFFSET + EN0); - ipi_en0_regs[6] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE2_OFFSET + EN0); - ipi_en0_regs[7] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE3_OFFSET + EN0); - ipi_en0_regs[8] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE0_OFFSET + EN0); - ipi_en0_regs[9] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE1_OFFSET + EN0); - ipi_en0_regs[10] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE2_OFFSET + EN0); - ipi_en0_regs[11] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE3_OFFSET + EN0); - ipi_en0_regs[12] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE0_OFFSET + EN0); - ipi_en0_regs[13] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE1_OFFSET + EN0); - ipi_en0_regs[14] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE2_OFFSET + EN0); - ipi_en0_regs[15] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE3_OFFSET + EN0); -} - -static void ipi_mailbox_buf_init(void) -{ - ipi_mailbox_buf[0] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE0_OFFSET + BUF); - ipi_mailbox_buf[1] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE1_OFFSET + BUF); - ipi_mailbox_buf[2] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE2_OFFSET + BUF); - ipi_mailbox_buf[3] = (void *) - (SMP_CORE_GROUP0_BASE + SMP_CORE3_OFFSET + BUF); - ipi_mailbox_buf[4] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE0_OFFSET + BUF); - ipi_mailbox_buf[5] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE1_OFFSET + BUF); - ipi_mailbox_buf[6] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE2_OFFSET + BUF); - ipi_mailbox_buf[7] = (void *) - (SMP_CORE_GROUP1_BASE + SMP_CORE3_OFFSET + BUF); - ipi_mailbox_buf[8] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE0_OFFSET + BUF); - ipi_mailbox_buf[9] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE1_OFFSET + BUF); - ipi_mailbox_buf[10] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE2_OFFSET + BUF); - ipi_mailbox_buf[11] = (void *) - (SMP_CORE_GROUP2_BASE + SMP_CORE3_OFFSET + BUF); - ipi_mailbox_buf[12] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE0_OFFSET + BUF); - ipi_mailbox_buf[13] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE1_OFFSET + BUF); - ipi_mailbox_buf[14] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE2_OFFSET + BUF); - ipi_mailbox_buf[15] = (void *) - (SMP_CORE_GROUP3_BASE + SMP_CORE3_OFFSET + BUF); -} - -/* - * Simple enough, just poke the appropriate ipi register - */ -static void loongson3_send_ipi_single(int cpu, unsigned int action) -{ - loongson3_ipi_write32((u32)action, ipi_set0_regs[cpu_logical_map(cpu)]); -} - -static void -loongson3_send_ipi_mask(const struct cpumask *mask, unsigned int action) -{ - unsigned int i; - - for_each_cpu(i, mask) - loongson3_ipi_write32((u32)action, ipi_set0_regs[cpu_logical_map(i)]); -} - -void loongson3_ipi_interrupt(struct pt_regs *regs) -{ - int i, cpu = smp_processor_id(); - unsigned int action, c0count; - - /* Load the ipi register to figure out what we're supposed to do */ - action = loongson3_ipi_read32(ipi_status0_regs[cpu_logical_map(cpu)]); - - /* Clear the ipi register to clear the interrupt */ - loongson3_ipi_write32((u32)action, ipi_clear0_regs[cpu_logical_map(cpu)]); - - if (action & SMP_RESCHEDULE_YOURSELF) - scheduler_ipi(); - - if (action & SMP_CALL_FUNCTION) - smp_call_function_interrupt(); - - if (action & SMP_ASK_C0COUNT) { - BUG_ON(cpu != 0); - c0count = read_c0_count(); - for (i = 1; i < num_possible_cpus(); i++) - per_cpu(core0_c0count, i) = c0count; - } -} - -#define MAX_LOOPS 1111 -/* - * SMP init and finish on secondary CPUs - */ -static void loongson3_init_secondary(void) -{ - int i; - uint32_t initcount; - unsigned int cpu = smp_processor_id(); - unsigned int imask = STATUSF_IP7 | STATUSF_IP6 | - STATUSF_IP3 | STATUSF_IP2; - - /* Set interrupt mask, but don't enable */ - change_c0_status(ST0_IM, imask); - - for (i = 0; i < num_possible_cpus(); i++) - loongson3_ipi_write32(0xffffffff, ipi_en0_regs[cpu_logical_map(i)]); - - per_cpu(cpu_state, cpu) = CPU_ONLINE; - cpu_data[cpu].core = - cpu_logical_map(cpu) % loongson_sysconf.cores_per_package; - cpu_data[cpu].package = - cpu_logical_map(cpu) / loongson_sysconf.cores_per_package; - - i = 0; - __this_cpu_write(core0_c0count, 0); - loongson3_send_ipi_single(0, SMP_ASK_C0COUNT); - while (!__this_cpu_read(core0_c0count)) { - i++; - cpu_relax(); - } - - if (i > MAX_LOOPS) - i = MAX_LOOPS; - initcount = __this_cpu_read(core0_c0count) + i; - write_c0_count(initcount); -} - -static void loongson3_smp_finish(void) -{ - int cpu = smp_processor_id(); - - write_c0_compare(read_c0_count() + mips_hpt_frequency/HZ); - local_irq_enable(); - loongson3_ipi_write64(0, - (void *)(ipi_mailbox_buf[cpu_logical_map(cpu)]+0x0)); - pr_info("CPU#%d finished, CP0_ST=%x\n", - smp_processor_id(), read_c0_status()); -} - -static void __init loongson3_smp_setup(void) -{ - int i = 0, num = 0; /* i: physical id, num: logical id */ - - init_cpu_possible(cpu_none_mask); - - /* For unified kernel, NR_CPUS is the maximum possible value, - * loongson_sysconf.nr_cpus is the really present value */ - while (i < loongson_sysconf.nr_cpus) { - if (loongson_sysconf.reserved_cpus_mask & (1<<i)) { - /* Reserved physical CPU cores */ - __cpu_number_map[i] = -1; - } else { - __cpu_number_map[i] = num; - __cpu_logical_map[num] = i; - set_cpu_possible(num, true); - num++; - } - i++; - } - pr_info("Detected %i available CPU(s)\n", num); - - while (num < loongson_sysconf.nr_cpus) { - __cpu_logical_map[num] = -1; - num++; - } - - ipi_set0_regs_init(); - ipi_clear0_regs_init(); - ipi_status0_regs_init(); - ipi_en0_regs_init(); - ipi_mailbox_buf_init(); - cpu_data[0].core = cpu_logical_map(0) % loongson_sysconf.cores_per_package; - cpu_data[0].package = cpu_logical_map(0) / loongson_sysconf.cores_per_package; -} - -static void __init loongson3_prepare_cpus(unsigned int max_cpus) -{ - init_cpu_present(cpu_possible_mask); - per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE; -} - -/* - * Setup the PC, SP, and GP of a secondary processor and start it runing! - */ -static void loongson3_boot_secondary(int cpu, struct task_struct *idle) -{ - unsigned long startargs[4]; - - pr_info("Booting CPU#%d...\n", cpu); - - /* startargs[] are initial PC, SP and GP for secondary CPU */ - startargs[0] = (unsigned long)&smp_bootstrap; - startargs[1] = (unsigned long)__KSTK_TOS(idle); - startargs[2] = (unsigned long)task_thread_info(idle); - startargs[3] = 0; - - pr_debug("CPU#%d, func_pc=%lx, sp=%lx, gp=%lx\n", - cpu, startargs[0], startargs[1], startargs[2]); - - loongson3_ipi_write64(startargs[3], - (void *)(ipi_mailbox_buf[cpu_logical_map(cpu)]+0x18)); - loongson3_ipi_write64(startargs[2], - (void *)(ipi_mailbox_buf[cpu_logical_map(cpu)]+0x10)); - loongson3_ipi_write64(startargs[1], - (void *)(ipi_mailbox_buf[cpu_logical_map(cpu)]+0x8)); - loongson3_ipi_write64(startargs[0], - (void *)(ipi_mailbox_buf[cpu_logical_map(cpu)]+0x0)); -} - -#ifdef CONFIG_HOTPLUG_CPU - -static int loongson3_cpu_disable(void) -{ - unsigned long flags; - unsigned int cpu = smp_processor_id(); - - if (cpu == 0) - return -EBUSY; - - set_cpu_online(cpu, false); - cpumask_clear_cpu(cpu, &cpu_callin_map); - local_irq_save(flags); - fixup_irqs(); - local_irq_restore(flags); - flush_cache_all(); - local_flush_tlb_all(); - - return 0; -} - - -static void loongson3_cpu_die(unsigned int cpu) -{ - while (per_cpu(cpu_state, cpu) != CPU_DEAD) - cpu_relax(); - - mb(); -} - -/* To shutdown a core in Loongson 3, the target core should go to CKSEG1 and - * flush all L1 entries at first. Then, another core (usually Core 0) can - * safely disable the clock of the target core. loongson3_play_dead() is - * called via CKSEG1 (uncached and unmmaped) */ -static void loongson3a_play_dead(int *state_addr) -{ - register int val; - register long cpuid, core, node, count; - register void *addr, *base, *initfunc; - - __asm__ __volatile__( - " .set push \n" - " .set noreorder \n" - " li %[addr], 0x80000000 \n" /* KSEG0 */ - "1: cache 0, 0(%[addr]) \n" /* flush L1 ICache */ - " cache 0, 1(%[addr]) \n" - " cache 0, 2(%[addr]) \n" - " cache 0, 3(%[addr]) \n" - " cache 1, 0(%[addr]) \n" /* flush L1 DCache */ - " cache 1, 1(%[addr]) \n" - " cache 1, 2(%[addr]) \n" - " cache 1, 3(%[addr]) \n" - " addiu %[sets], %[sets], -1 \n" - " bnez %[sets], 1b \n" - " addiu %[addr], %[addr], 0x20 \n" - " li %[val], 0x7 \n" /* *state_addr = CPU_DEAD; */ - " sw %[val], (%[state_addr]) \n" - " sync \n" - " cache 21, (%[state_addr]) \n" /* flush entry of *state_addr */ - " .set pop \n" - : [addr] "=&r" (addr), [val] "=&r" (val) - : [state_addr] "r" (state_addr), - [sets] "r" (cpu_data[smp_processor_id()].dcache.sets)); - - __asm__ __volatile__( - " .set push \n" - " .set noreorder \n" - " .set mips64 \n" - " mfc0 %[cpuid], $15, 1 \n" - " andi %[cpuid], 0x3ff \n" - " dli %[base], 0x900000003ff01000 \n" - " andi %[core], %[cpuid], 0x3 \n" - " sll %[core], 8 \n" /* get core id */ - " or %[base], %[base], %[core] \n" - " andi %[node], %[cpuid], 0xc \n" - " dsll %[node], 42 \n" /* get node id */ - " or %[base], %[base], %[node] \n" - "1: li %[count], 0x100 \n" /* wait for init loop */ - "2: bnez %[count], 2b \n" /* limit mailbox access */ - " addiu %[count], -1 \n" - " ld %[initfunc], 0x20(%[base]) \n" /* get PC via mailbox */ - " beqz %[initfunc], 1b \n" - " nop \n" - " ld $sp, 0x28(%[base]) \n" /* get SP via mailbox */ - " ld $gp, 0x30(%[base]) \n" /* get GP via mailbox */ - " ld $a1, 0x38(%[base]) \n" - " jr %[initfunc] \n" /* jump to initial PC */ - " nop \n" - " .set pop \n" - : [core] "=&r" (core), [node] "=&r" (node), - [base] "=&r" (base), [cpuid] "=&r" (cpuid), - [count] "=&r" (count), [initfunc] "=&r" (initfunc) - : /* No Input */ - : "a1"); -} - -static void loongson3b_play_dead(int *state_addr) -{ - register int val; - register long cpuid, core, node, count; - register void *addr, *base, *initfunc; - - __asm__ __volatile__( - " .set push \n" - " .set noreorder \n" - " li %[addr], 0x80000000 \n" /* KSEG0 */ - "1: cache 0, 0(%[addr]) \n" /* flush L1 ICache */ - " cache 0, 1(%[addr]) \n" - " cache 0, 2(%[addr]) \n" - " cache 0, 3(%[addr]) \n" - " cache 1, 0(%[addr]) \n" /* flush L1 DCache */ - " cache 1, 1(%[addr]) \n" - " cache 1, 2(%[addr]) \n" - " cache 1, 3(%[addr]) \n" - " addiu %[sets], %[sets], -1 \n" - " bnez %[sets], 1b \n" - " addiu %[addr], %[addr], 0x20 \n" - " li %[val], 0x7 \n" /* *state_addr = CPU_DEAD; */ - " sw %[val], (%[state_addr]) \n" - " sync \n" - " cache 21, (%[state_addr]) \n" /* flush entry of *state_addr */ - " .set pop \n" - : [addr] "=&r" (addr), [val] "=&r" (val) - : [state_addr] "r" (state_addr), - [sets] "r" (cpu_data[smp_processor_id()].dcache.sets)); - - __asm__ __volatile__( - " .set push \n" - " .set noreorder \n" - " .set mips64 \n" - " mfc0 %[cpuid], $15, 1 \n" - " andi %[cpuid], 0x3ff \n" - " dli %[base], 0x900000003ff01000 \n" - " andi %[core], %[cpuid], 0x3 \n" - " sll %[core], 8 \n" /* get core id */ - " or %[base], %[base], %[core] \n" - " andi %[node], %[cpuid], 0xc \n" - " dsll %[node], 42 \n" /* get node id */ - " or %[base], %[base], %[node] \n" - " dsrl %[node], 30 \n" /* 15:14 */ - " or %[base], %[base], %[node] \n" - "1: li %[count], 0x100 \n" /* wait for init loop */ - "2: bnez %[count], 2b \n" /* limit mailbox access */ - " addiu %[count], -1 \n" - " ld %[initfunc], 0x20(%[base]) \n" /* get PC via mailbox */ - " beqz %[initfunc], 1b \n" - " nop \n" - " ld $sp, 0x28(%[base]) \n" /* get SP via mailbox */ - " ld $gp, 0x30(%[base]) \n" /* get GP via mailbox */ - " ld $a1, 0x38(%[base]) \n" - " jr %[initfunc] \n" /* jump to initial PC */ - " nop \n" - " .set pop \n" - : [core] "=&r" (core), [node] "=&r" (node), - [base] "=&r" (base), [cpuid] "=&r" (cpuid), - [count] "=&r" (count), [initfunc] "=&r" (initfunc) - : /* No Input */ - : "a1"); -} - -void play_dead(void) -{ - int *state_addr; - unsigned int cpu = smp_processor_id(); - void (*play_dead_at_ckseg1)(int *); - - idle_task_exit(); - switch (loongson_sysconf.cputype) { - case Loongson_3A: - default: - play_dead_at_ckseg1 = - (void *)CKSEG1ADDR((unsigned long)loongson3a_play_dead); - break; - case Loongson_3B: - play_dead_at_ckseg1 = - (void *)CKSEG1ADDR((unsigned long)loongson3b_play_dead); - break; - } - state_addr = &per_cpu(cpu_state, cpu); - mb(); - play_dead_at_ckseg1(state_addr); -} - -void loongson3_disable_clock(int cpu) -{ - uint64_t core_id = cpu_data[cpu].core; - uint64_t package_id = cpu_data[cpu].package; - - if (loongson_sysconf.cputype == Loongson_3A) { - LOONGSON_CHIPCFG(package_id) &= ~(1 << (12 + core_id)); - } else if (loongson_sysconf.cputype == Loongson_3B) { - if (!(loongson_sysconf.workarounds & WORKAROUND_CPUHOTPLUG)) - LOONGSON_FREQCTRL(package_id) &= ~(1 << (core_id * 4 + 3)); - } -} - -void loongson3_enable_clock(int cpu) -{ - uint64_t core_id = cpu_data[cpu].core; - uint64_t package_id = cpu_data[cpu].package; - - if (loongson_sysconf.cputype == Loongson_3A) { - LOONGSON_CHIPCFG(package_id) |= 1 << (12 + core_id); - } else if (loongson_sysconf.cputype == Loongson_3B) { - if (!(loongson_sysconf.workarounds & WORKAROUND_CPUHOTPLUG)) - LOONGSON_FREQCTRL(package_id) |= 1 << (core_id * 4 + 3); - } -} - -#define CPU_POST_DEAD_FROZEN (CPU_POST_DEAD | CPU_TASKS_FROZEN) -static int loongson3_cpu_callback(struct notifier_block *nfb, - unsigned long action, void *hcpu) -{ - unsigned int cpu = (unsigned long)hcpu; - - switch (action) { - case CPU_POST_DEAD: - case CPU_POST_DEAD_FROZEN: - pr_info("Disable clock for CPU#%d\n", cpu); - loongson3_disable_clock(cpu); - break; - case CPU_UP_PREPARE: - case CPU_UP_PREPARE_FROZEN: - pr_info("Enable clock for CPU#%d\n", cpu); - loongson3_enable_clock(cpu); - break; - } - - return NOTIFY_OK; -} - -static int register_loongson3_notifier(void) -{ - hotcpu_notifier(loongson3_cpu_callback, 0); - return 0; -} -early_initcall(register_loongson3_notifier); - -#endif - -struct plat_smp_ops loongson3_smp_ops = { - .send_ipi_single = loongson3_send_ipi_single, - .send_ipi_mask = loongson3_send_ipi_mask, - .init_secondary = loongson3_init_secondary, - .smp_finish = loongson3_smp_finish, - .boot_secondary = loongson3_boot_secondary, - .smp_setup = loongson3_smp_setup, - .prepare_cpus = loongson3_prepare_cpus, -#ifdef CONFIG_HOTPLUG_CPU - .cpu_disable = loongson3_cpu_disable, - .cpu_die = loongson3_cpu_die, -#endif -}; diff --git a/arch/mips/loongson/loongson-3/smp.h b/arch/mips/loongson/loongson-3/smp.h deleted file mode 100644 index d98ff654b7d7..000000000000 --- a/arch/mips/loongson/loongson-3/smp.h +++ /dev/null @@ -1,30 +0,0 @@ -#ifndef __LOONGSON_SMP_H_ -#define __LOONGSON_SMP_H_ - -/* for Loongson-3 smp support */ -extern unsigned long long smp_group[4]; - -/* 4 groups(nodes) in maximum in numa case */ -#define SMP_CORE_GROUP0_BASE (smp_group[0]) -#define SMP_CORE_GROUP1_BASE (smp_group[1]) -#define SMP_CORE_GROUP2_BASE (smp_group[2]) -#define SMP_CORE_GROUP3_BASE (smp_group[3]) - -/* 4 cores in each group(node) */ -#define SMP_CORE0_OFFSET 0x000 -#define SMP_CORE1_OFFSET 0x100 -#define SMP_CORE2_OFFSET 0x200 -#define SMP_CORE3_OFFSET 0x300 - -/* ipi registers offsets */ -#define STATUS0 0x00 -#define EN0 0x04 -#define SET0 0x08 -#define CLEAR0 0x0c -#define STATUS1 0x10 -#define MASK1 0x14 -#define SET1 0x18 -#define CLEAR1 0x1c -#define BUF 0x20 - -#endif |