308 lines
6.7 KiB
C
308 lines
6.7 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* PS3 platform setup routines.
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*
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* Copyright (C) 2006 Sony Computer Entertainment Inc.
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* Copyright 2006 Sony Corp.
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*/
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#include <linux/kernel.h>
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#include <linux/delay.h>
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#include <linux/fs.h>
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#include <linux/root_dev.h>
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#include <linux/console.h>
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#include <linux/export.h>
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#include <linux/memblock.h>
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#include <asm/machdep.h>
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#include <asm/firmware.h>
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#include <asm/time.h>
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#include <asm/iommu.h>
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#include <asm/udbg.h>
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#include <asm/prom.h>
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#include <asm/lv1call.h>
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#include <asm/ps3gpu.h>
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#include "platform.h"
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#if defined(DEBUG)
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#define DBG udbg_printf
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#else
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#define DBG pr_debug
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#endif
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/* mutex synchronizing GPU accesses and video mode changes */
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DEFINE_MUTEX(ps3_gpu_mutex);
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EXPORT_SYMBOL_GPL(ps3_gpu_mutex);
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static union ps3_firmware_version ps3_firmware_version;
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static char ps3_firmware_version_str[16];
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void ps3_get_firmware_version(union ps3_firmware_version *v)
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{
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*v = ps3_firmware_version;
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}
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EXPORT_SYMBOL_GPL(ps3_get_firmware_version);
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int ps3_compare_firmware_version(u16 major, u16 minor, u16 rev)
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{
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union ps3_firmware_version x;
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x.pad = 0;
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x.major = major;
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x.minor = minor;
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x.rev = rev;
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return (ps3_firmware_version.raw > x.raw) -
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(ps3_firmware_version.raw < x.raw);
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}
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EXPORT_SYMBOL_GPL(ps3_compare_firmware_version);
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static void ps3_power_save(void)
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{
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/*
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* lv1_pause() puts the PPE thread into inactive state until an
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* irq on an unmasked plug exists. MSR[EE] has no effect.
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* flags: 0 = wake on DEC interrupt, 1 = ignore DEC interrupt.
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*/
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lv1_pause(0);
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}
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static void __noreturn ps3_restart(char *cmd)
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{
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DBG("%s:%d cmd '%s'\n", __func__, __LINE__, cmd);
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smp_send_stop();
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ps3_sys_manager_restart(); /* never returns */
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}
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static void ps3_power_off(void)
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{
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DBG("%s:%d\n", __func__, __LINE__);
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smp_send_stop();
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ps3_sys_manager_power_off(); /* never returns */
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}
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static void __noreturn ps3_halt(void)
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{
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DBG("%s:%d\n", __func__, __LINE__);
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smp_send_stop();
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ps3_sys_manager_halt(); /* never returns */
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}
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static void ps3_panic(char *str)
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{
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DBG("%s:%d %s\n", __func__, __LINE__, str);
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smp_send_stop();
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printk("\n");
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printk(" System does not reboot automatically.\n");
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printk(" Please press POWER button.\n");
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printk("\n");
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panic_flush_kmsg_end();
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while(1)
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lv1_pause(1);
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}
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#if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE) || \
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defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
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static void __init prealloc(struct ps3_prealloc *p)
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{
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if (!p->size)
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return;
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p->address = memblock_alloc(p->size, p->align);
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if (!p->address)
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panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
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__func__, p->size, p->align);
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printk(KERN_INFO "%s: %lu bytes at %p\n", p->name, p->size,
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p->address);
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}
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#endif
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#if defined(CONFIG_FB_PS3) || defined(CONFIG_FB_PS3_MODULE)
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struct ps3_prealloc ps3fb_videomemory = {
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.name = "ps3fb videomemory",
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.size = CONFIG_FB_PS3_DEFAULT_SIZE_M*1024*1024,
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.align = 1024*1024 /* the GPU requires 1 MiB alignment */
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};
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EXPORT_SYMBOL_GPL(ps3fb_videomemory);
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#define prealloc_ps3fb_videomemory() prealloc(&ps3fb_videomemory)
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static int __init early_parse_ps3fb(char *p)
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{
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if (!p)
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return 1;
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ps3fb_videomemory.size = ALIGN(memparse(p, &p),
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ps3fb_videomemory.align);
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return 0;
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}
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early_param("ps3fb", early_parse_ps3fb);
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#else
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#define prealloc_ps3fb_videomemory() do { } while (0)
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#endif
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#if defined(CONFIG_PS3_FLASH) || defined(CONFIG_PS3_FLASH_MODULE)
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struct ps3_prealloc ps3flash_bounce_buffer = {
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.name = "ps3flash bounce buffer",
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.size = 256*1024,
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.align = 256*1024
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};
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EXPORT_SYMBOL_GPL(ps3flash_bounce_buffer);
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#define prealloc_ps3flash_bounce_buffer() prealloc(&ps3flash_bounce_buffer)
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static int __init early_parse_ps3flash(char *p)
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{
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if (!p)
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return 1;
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if (!strcmp(p, "off"))
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ps3flash_bounce_buffer.size = 0;
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return 0;
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}
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early_param("ps3flash", early_parse_ps3flash);
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#else
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#define prealloc_ps3flash_bounce_buffer() do { } while (0)
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#endif
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static int ps3_set_dabr(unsigned long dabr, unsigned long dabrx)
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{
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/* Have to set at least one bit in the DABRX */
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if (dabrx == 0 && dabr == 0)
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dabrx = DABRX_USER;
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/* hypervisor only allows us to set BTI, Kernel and user */
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dabrx &= DABRX_BTI | DABRX_KERNEL | DABRX_USER;
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return lv1_set_dabr(dabr, dabrx) ? -1 : 0;
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}
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static ssize_t ps3_fw_version_show(struct kobject *kobj,
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struct kobj_attribute *attr, char *buf)
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{
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return sprintf(buf, "%s", ps3_firmware_version_str);
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}
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static int __init ps3_setup_sysfs(void)
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{
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static struct kobj_attribute attr = __ATTR(fw-version, S_IRUGO,
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ps3_fw_version_show, NULL);
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static struct kobject *kobj;
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int result;
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kobj = kobject_create_and_add("ps3", firmware_kobj);
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if (!kobj) {
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pr_warn("%s:%d: kobject_create_and_add failed.\n", __func__,
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__LINE__);
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return -ENOMEM;
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}
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result = sysfs_create_file(kobj, &attr.attr);
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if (result) {
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pr_warn("%s:%d: sysfs_create_file failed.\n", __func__,
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__LINE__);
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kobject_put(kobj);
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return -ENOMEM;
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}
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return 0;
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}
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core_initcall(ps3_setup_sysfs);
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static void __init ps3_setup_arch(void)
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{
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u64 tmp;
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DBG(" -> %s:%d\n", __func__, __LINE__);
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lv1_get_version_info(&ps3_firmware_version.raw, &tmp);
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snprintf(ps3_firmware_version_str, sizeof(ps3_firmware_version_str),
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"%u.%u.%u", ps3_firmware_version.major,
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ps3_firmware_version.minor, ps3_firmware_version.rev);
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printk(KERN_INFO "PS3 firmware version %s\n", ps3_firmware_version_str);
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ps3_spu_set_platform();
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#ifdef CONFIG_SMP
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smp_init_ps3();
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#endif
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prealloc_ps3fb_videomemory();
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prealloc_ps3flash_bounce_buffer();
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ppc_md.power_save = ps3_power_save;
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ps3_os_area_init();
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DBG(" <- %s:%d\n", __func__, __LINE__);
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}
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static void __init ps3_progress(char *s, unsigned short hex)
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{
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printk("*** %04x : %s\n", hex, s ? s : "");
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}
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void __init ps3_early_mm_init(void)
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{
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unsigned long htab_size;
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ps3_mm_init();
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ps3_mm_vas_create(&htab_size);
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ps3_hpte_init(htab_size);
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}
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static int __init ps3_probe(void)
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{
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DBG(" -> %s:%d\n", __func__, __LINE__);
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if (!of_machine_is_compatible("sony,ps3"))
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return 0;
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ps3_os_area_save_params();
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pm_power_off = ps3_power_off;
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DBG(" <- %s:%d\n", __func__, __LINE__);
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return 1;
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}
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#if defined(CONFIG_KEXEC_CORE)
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static void ps3_kexec_cpu_down(int crash_shutdown, int secondary)
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{
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int cpu = smp_processor_id();
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DBG(" -> %s:%d: (%d)\n", __func__, __LINE__, cpu);
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ps3_smp_cleanup_cpu(cpu);
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ps3_shutdown_IRQ(cpu);
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DBG(" <- %s:%d\n", __func__, __LINE__);
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}
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#endif
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define_machine(ps3) {
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.name = "PS3",
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.probe = ps3_probe,
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.setup_arch = ps3_setup_arch,
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.init_IRQ = ps3_init_IRQ,
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.panic = ps3_panic,
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.get_boot_time = ps3_get_boot_time,
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.set_dabr = ps3_set_dabr,
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.calibrate_decr = ps3_calibrate_decr,
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.progress = ps3_progress,
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.restart = ps3_restart,
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.halt = ps3_halt,
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#if defined(CONFIG_KEXEC_CORE)
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.kexec_cpu_down = ps3_kexec_cpu_down,
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#endif
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};
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