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https://github.com/DragonOS-Community/DragonOS.git
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bugfix: 当处理器不支持x2apic时,local apic初始化将导致triple fault的问题
This commit is contained in:
parent
1a2d405384
commit
dbbd060d53
@ -96,7 +96,6 @@ void apic_io_apic_init()
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// 不需要手动启动IO APIC,只要初始化了RTE寄存器之后,io apic就会自动启用了。
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// 而且不是每台电脑都有RCBA寄存器,因此不需要手动启用IO APIC
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}
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/**
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@ -108,16 +107,13 @@ void apic_init_ap_core_local_apic()
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kinfo("Initializing AP-core's local apic...");
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uint eax, edx;
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// 启用xAPIC 和x2APIC
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__asm__ __volatile__("movq $0x1b, %%rcx \n\t" // 读取IA32_APIC_BASE寄存器
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"rdmsr \n\t"
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"bts $10, %%rax \n\t"
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"bts $11, %%rax \n\t"
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"wrmsr \n\t"
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"movq $0x1b, %%rcx \n\t"
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"rdmsr \n\t"
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: "=a"(eax), "=d"(edx)::"memory");
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// kdebug("After enable xAPIC and x2APIC: edx=%#010x, eax=%#010x", edx, eax);
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uint64_t ia32_apic_base = rdmsr(0x1b);
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ia32_apic_base |= (1 << 11);
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if (flag_support_x2apic) // 如果支持x2apic,则启用
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ia32_apic_base |= (1 << 10);
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wrmsr(0x1b, ia32_apic_base);
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ia32_apic_base = rdmsr(0x1b);
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eax = ia32_apic_base & 0xffffffff;
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// 检测是否成功启用xAPIC和x2APIC
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if (eax & 0xc00)
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@ -173,14 +169,129 @@ void apic_init_ap_core_local_apic()
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kdebug("All LVT Masked");
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}
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/**
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* @brief 当前使用xapic来初始化local apic
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*
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*/
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static void __local_apic_xapic_init()
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{
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// 设置svr的 apic软件使能位
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uint64_t qword = *(uint64_t *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_SVR);
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kdebug("svr=%#018lx", qword);
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qword |= (1 << 8);
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*(uint64_t *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_SVR) = qword;
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qword = *(uint64_t *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_SVR);
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if (qword & 0x100)
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kinfo("APIC Software Enabled.");
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if (qword & 0x1000)
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kinfo("EOI-Broadcast Suppression Enabled.");
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// 从 Local APIC Version register 获取Local APIC Version
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qword = *(uint64_t *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_Version);
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qword &= 0xffffffff;
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local_apic_max_LVT_entries = ((qword >> 16) & 0xff) + 1;
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local_apic_version = qword & 0xff;
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kdebug("local APIC Version:%#010x,Max LVT Entry:%#010x,SVR(Suppress EOI Broadcast):%#04x\t", local_apic_version, local_apic_max_LVT_entries, (qword >> 24) & 0x1);
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if ((qword & 0xff) < 0x10)
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{
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kdebug("82489DX discrete APIC");
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}
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else if (((qword & 0xff) >= 0x10) && ((qword & 0xff) <= 0x15))
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kdebug("Integrated APIC.");
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io_mfence();
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// 如果写入这里的话,在有的机器上面会报错
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// *(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_CMCI) = APIC_LVT_INT_MASKED;
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io_mfence();
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*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_TIMER) = APIC_LVT_INT_MASKED;
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io_mfence();
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*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_THERMAL) = APIC_LVT_INT_MASKED;
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io_mfence();
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*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_PERFORMANCE_MONITOR) = APIC_LVT_INT_MASKED;
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io_mfence();
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*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_LINT0) = APIC_LVT_INT_MASKED;
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io_mfence();
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*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_LINT1) = APIC_LVT_INT_MASKED;
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io_mfence();
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*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_ERROR) = APIC_LVT_INT_MASKED;
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io_mfence();
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kdebug("All LVT Masked");
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}
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/**
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* @brief 当前使用x2apic来初始化local apic
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*
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*/
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static void __local_apic_x2apic_init()
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{
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uint32_t eax, edx;
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__asm__ __volatile__("movq $0x80f, %%rcx \n\t"
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"rdmsr \n\t"
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"bts $8, %%rax \n\t"
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// "bts $12, %%rax \n\t"
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"movq $0x80f, %%rcx \n\t"
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"wrmsr \n\t"
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"movq $0x80f , %%rcx \n\t"
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"rdmsr \n\t"
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: "=a"(eax), "=d"(edx)::"memory");
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if (eax & 0x100)
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kinfo("APIC Software Enabled.");
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if (eax & 0x1000)
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kinfo("EOI-Broadcast Suppression Enabled.");
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// 获取Local APIC Version
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// 0x803处是 Local APIC Version register
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__asm__ __volatile__("movq $0x803, %%rcx \n\t"
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"rdmsr \n\t"
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: "=a"(eax), "=d"(edx)::"memory");
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local_apic_max_LVT_entries = ((eax >> 16) & 0xff) + 1;
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local_apic_version = eax & 0xff;
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kdebug("local APIC Version:%#010x,Max LVT Entry:%#010x,SVR(Suppress EOI Broadcast):%#04x\t", local_apic_version, local_apic_max_LVT_entries, (eax >> 24) & 0x1);
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if ((eax & 0xff) < 0x10)
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kdebug("82489DX discrete APIC");
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else if (((eax & 0xff) >= 0x10) && ((eax & 0xff) <= 0x15))
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kdebug("Integrated APIC.");
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// 由于尚未配置LVT对应的处理程序,因此先屏蔽所有的LVT
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__asm__ __volatile__(// "movq $0x82f, %%rcx \n\t" // CMCI
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// "wrmsr \n\t"
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"movq $0x832, %%rcx \n\t" // Timer
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"wrmsr \n\t"
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"movq $0x833, %%rcx \n\t" // Thermal Monitor
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"wrmsr \n\t"
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"movq $0x834, %%rcx \n\t" // Performance Counter
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"wrmsr \n\t"
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"movq $0x835, %%rcx \n\t" // LINT0
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"wrmsr \n\t"
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"movq $0x836, %%rcx \n\t" // LINT1
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"wrmsr \n\t"
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"movq $0x837, %%rcx \n\t" // Error
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"wrmsr \n\t"
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:
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: "a"(0x10000), "d"(0x00)
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: "memory");
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kdebug("All LVT Masked");
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}
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/**
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* @brief 初始化local apic
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*
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*/
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void apic_local_apic_init()
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{
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uint64_t ia32_apic_base = rdmsr(0x1b);
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// kdebug("apic base=%#018lx", (ia32_apic_base & 0x1FFFFFFFFFF000));
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// 映射Local APIC 寄存器地址
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mm_map_phys_addr(APIC_LOCAL_APIC_VIRT_BASE_ADDR, 0xfee00000UL, PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD, false);
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mm_map_phys_addr(APIC_LOCAL_APIC_VIRT_BASE_ADDR, (ia32_apic_base & 0x1FFFFFFFFFFFFF), PAGE_2M_SIZE, PAGE_KERNEL_PAGE | PAGE_PWT | PAGE_PCD, false);
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uint a, b, c, d;
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cpu_cpuid(1, 0, &a, &b, &c, &d);
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@ -209,69 +320,33 @@ void apic_local_apic_init()
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}
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else
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{
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kerror("This computer does not support x2APIC");
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flag_support_x2apic = false;
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kwarn("This computer does not support x2APIC");
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}
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uint eax, edx;
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// 启用xAPIC 和x2APIC
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__asm__ __volatile__("movq $0x1b, %%rcx \n\t" // 读取IA32_APIC_BASE寄存器
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"rdmsr \n\t"
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"bts $10, %%rax \n\t"
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"bts $11, %%rax \n\t"
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"wrmsr \n\t"
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"movq $0x1b, %%rcx \n\t"
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"rdmsr \n\t"
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: "=a"(eax), "=d"(edx)::"memory");
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// kdebug("After enable xAPIC and x2APIC: edx=%#010x, eax=%#010x", edx, eax);
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ia32_apic_base = rdmsr(0x1b);
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ia32_apic_base |= (1 << 11);
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if (flag_support_x2apic) // 如果支持x2apic,则启用
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ia32_apic_base |= (1 << 10);
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wrmsr(0x1b, ia32_apic_base);
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ia32_apic_base = rdmsr(0x1b);
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eax = ia32_apic_base & 0xffffffff;
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// 检测是否成功启用xAPIC和x2APIC
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if (eax & 0xc00)
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if ((eax & 0xc00) == 0xc00)
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kinfo("xAPIC & x2APIC enabled!");
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else if ((eax & 0x800) == 0x800)
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kinfo("Only xAPIC enabled!");
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else
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kerror("Both xAPIC and x2APIC are not enabled.");
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/*
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io_mfence();
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uint *svr = (uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_SVR);
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uint tmp_svr = *svr;
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tmp_svr &= (~(1 << 12));
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tmp_svr |= (1 << 8);
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kdebug("tmp_svr = %#018lx", tmp_svr);
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io_mfence();
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*svr = tmp_svr;
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io_mfence();
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kdebug("svr = %#018lx", *svr);
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*/
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// 设置SVR寄存器,开启local APIC、禁止EOI广播
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__asm__ __volatile__("movq $0x80f, %%rcx \n\t"
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"rdmsr \n\t"
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"bts $8, %%rax \n\t"
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// "bts $12, %%rax \n\t"
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"movq $0x80f, %%rcx \n\t"
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"wrmsr \n\t"
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"movq $0x80f , %%rcx \n\t"
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"rdmsr \n\t"
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: "=a"(eax), "=d"(edx)::"memory");
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/*
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//enable SVR[8]
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__asm__ __volatile__( "movq $0x80f, %%rcx \n\t"
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"rdmsr \n\t"
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"bts $8, %%rax \n\t"
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"bts $12,%%rax\n\t"
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"wrmsr \n\t"
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"movq $0x80f, %%rcx \n\t"
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"rdmsr \n\t"
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:"=a"(eax),"=d"(edx)
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:
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:"memory");
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*/
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// kdebug("After setting SVR: edx=%#010x, eax=%#010x", edx, eax);
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if (eax & 0x100)
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kinfo("APIC Software Enabled.");
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if (eax & 0x1000)
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kinfo("EOI-Broadcast Suppression Enabled.");
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if (flag_support_x2apic) // 当前为x2APIC
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__local_apic_x2apic_init();
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else // 当前为xapic
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__local_apic_xapic_init();
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// 获取Local APIC的基础信息 (参见英特尔开发手册Vol3A 10-39)
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// Table 10-6. Local APIC Register Address Map Supported by x2APIC
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@ -284,81 +359,6 @@ void apic_local_apic_init()
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*/
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// kdebug("get Local APIC ID: edx=%#010x, eax=%#010x", edx, eax);
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// kdebug("local_apic_id=%#018lx", *(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_ID));
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// 获取Local APIC Version
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// 0x803处是 Local APIC Version register
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__asm__ __volatile__("movq $0x803, %%rcx \n\t"
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"rdmsr \n\t"
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: "=a"(eax), "=d"(edx)::"memory");
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local_apic_max_LVT_entries = ((eax >> 16) & 0xff) + 1;
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local_apic_version = eax & 0xff;
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kdebug("local APIC Version:%#010x,Max LVT Entry:%#010x,SVR(Suppress EOI Broadcast):%#04x\t", local_apic_version, local_apic_max_LVT_entries, (eax >> 24) & 0x1);
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if ((eax & 0xff) < 0x10)
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{
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kdebug("82489DX discrete APIC");
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}
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else if (((eax & 0xff) >= 0x10) && ((eax & 0xff) <= 0x15))
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kdebug("Integrated APIC.");
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// 由于尚未配置LVT对应的处理程序,因此先屏蔽所有的LVT
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// mask all LVT
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__asm__ __volatile__( //"movq $0x82f, %%rcx \n\t" //CMCI
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//"wrmsr \n\t"
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"movq $0x832, %%rcx \n\t" // Timer
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"wrmsr \n\t"
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"movq $0x833, %%rcx \n\t" // Thermal Monitor
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"wrmsr \n\t"
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"movq $0x834, %%rcx \n\t" // Performance Counter
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"wrmsr \n\t"
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"movq $0x835, %%rcx \n\t" // LINT0
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"wrmsr \n\t"
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"movq $0x836, %%rcx \n\t" // LINT1
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"wrmsr \n\t"
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"movq $0x837, %%rcx \n\t" // Error
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"wrmsr \n\t"
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:
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: "a"(0x10000), "d"(0x00)
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: "memory");
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/*
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io_mfence();
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*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_CMCI) = 0x1000000;
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io_mfence();
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kdebug("cmci = %#018lx", *(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_CMCI));
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*/
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*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_TIMER) = APIC_LVT_INT_MASKED;
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io_mfence();
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/*
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*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_THERMAL) = 0x1000000;
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io_mfence();
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*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_PERFORMANCE_MONITOR) = 0x1000000;
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io_mfence();
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*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_LINT0) = 0x1000000;
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io_mfence();
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*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_LINT1) = 0x1000000;
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io_mfence();
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*(uint *)(APIC_LOCAL_APIC_VIRT_BASE_ADDR + LOCAL_APIC_OFFSET_Local_APIC_LVT_ERROR) = 0x1000000;
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io_mfence();
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*/
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kdebug("All LVT Masked");
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/*
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// 获取TPR寄存器的值
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__asm__ __volatile__("movq $0x808, %%rcx \n\t"
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"rdmsr \n\t"
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: "=a"(eax), "=d"(edx)::"memory");
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kdebug("LVT_TPR=%#010x", eax);
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// 获取PPR寄存器的值
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__asm__ __volatile__("movq $0x80a, %%rcx \n\t"
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"rdmsr \n\t"
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: "=a"(eax), "=d"(edx)::"memory");
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kdebug("LVT_PPR=%#010x", eax);
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*/
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}
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/**
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@ -375,25 +375,28 @@ void apic_init()
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for (int i = 150; i < 160; ++i)
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set_intr_gate(i, 0, local_apic_interrupt_table[i - 150]);
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/*
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// 初始化主芯片
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io_out8(0x20, 0x11); // 初始化主芯片的icw1
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io_out8(0x21, 0x20); // 设置主芯片的中断向量号为0x20(0x20-0x27)
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io_out8(0x21, 0x04); // 设置int2端口级联从芯片
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io_out8(0x21, 0x01); // 设置为AEOI模式、FNM、无缓冲
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// io_out8(0x20, 0x11); // 初始化主芯片的icw1
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// io_out8(0x21, 0x20); // 设置主芯片的中断向量号为0x20(0x20-0x27)
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// io_out8(0x21, 0x04); // 设置int2端口级联从芯片
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// io_out8(0x21, 0x01); // 设置为AEOI模式、FNM、无缓冲
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// 初始化从芯片
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io_out8(0xa0, 0x11);
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io_out8(0xa1, 0x28); // 设置从芯片的中断向量号为0x28(0x28-0x2f)
|
||||
io_out8(0xa1, 0x02); // 设置从芯片连接到主芯片的int2
|
||||
io_out8(0xa1, 0x01);
|
||||
*/
|
||||
// // 初始化从芯片
|
||||
// io_out8(0xa0, 0x11);
|
||||
// io_out8(0xa1, 0x28); // 设置从芯片的中断向量号为0x28(0x28-0x2f)
|
||||
// io_out8(0xa1, 0x02); // 设置从芯片连接到主芯片的int2
|
||||
// io_out8(0xa1, 0x01);
|
||||
|
||||
// 屏蔽类8259A芯片
|
||||
io_mfence();
|
||||
io_out8(0xa1, 0xff);
|
||||
io_mfence();
|
||||
// todo: 这里有bug:在真机或bochs上,无法屏蔽8259A,以至于sti()后,接收到来自与8259A相连的时钟的中断。然后造成错误。
|
||||
io_out8(0x21, 0xff);
|
||||
io_mfence();
|
||||
|
||||
io_out8(0xa1, 0xff);
|
||||
|
||||
// 写入8259A pic的EOI位
|
||||
io_out8(0x20, 0x20);
|
||||
io_out8(0xa0, 0x20);
|
||||
|
||||
kdebug("8259A Masked.");
|
||||
|
||||
@ -643,7 +646,6 @@ void apic_local_apic_edge_ack(ul irq_num)
|
||||
: "memory");
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* @brief 读取指定类型的 Interrupt Control Structure
|
||||
*
|
||||
|
@ -23,9 +23,12 @@
|
||||
#define PS2_KEYBOARD_FLAG_INBUF_FULL 0x02 // 键盘的输入缓冲区已满标志位
|
||||
|
||||
// 等待向键盘控制器写入信息完成
|
||||
// todo: bugfix:在不包含ps2键盘控制器的机器上,这里会卡死
|
||||
#define wait_ps2_keyboard_write() while (io_in8(PORT_PS2_KEYBOARD_STATUS) & PS2_KEYBOARD_FLAG_INBUF_FULL)
|
||||
// #define wait_ps2_keyboard_write() (1)
|
||||
// 等待从键盘控制器读取信息完成
|
||||
#define wait_ps2_keyboard_read() while (io_in8(PORT_PS2_KEYBOARD_STATUS) & PS2_KEYBOARD_FLAG_OUTBUF_FULL)
|
||||
// #define wait_ps2_keyboard_read() while (io_in8(PORT_PS2_KEYBOARD_STATUS) & PS2_KEYBOARD_FLAG_OUTBUF_FULL)
|
||||
// #define wait_ps2_keyboard_read() (1)
|
||||
|
||||
|
||||
extern struct vfs_file_operations_t ps2_keyboard_fops;
|
||||
|
@ -13,7 +13,9 @@
|
||||
* @brief 当前是否有数据正等待发送
|
||||
*
|
||||
*/
|
||||
// todo: 这里有bug,在真机上,一直认为端口是忙的
|
||||
#define is_transmit_empty(p) ((io_in8(p + 5) & 0x20))
|
||||
// #define is_transmit_empty(p) (1)
|
||||
|
||||
/**
|
||||
* @brief 初始化com口
|
||||
@ -48,6 +50,10 @@ int uart_init(uint32_t port, uint32_t bits_rate)
|
||||
// If serial is not faulty set it in normal operation mode
|
||||
// (not-loopback with IRQs enabled and OUT#1 and OUT#2 bits enabled)
|
||||
io_out8(port + 4, 0x0F);
|
||||
|
||||
char init_text2[] = "uart initialized.";
|
||||
for (int i = 0; i < sizeof(init_text2) - 1; ++i)
|
||||
uart_send(COM1, init_text2[i]);
|
||||
return UART_SUCCESS;
|
||||
|
||||
/*
|
||||
|
@ -467,7 +467,6 @@ m_ignore_int:
|
||||
pushq %rax
|
||||
lretq
|
||||
|
||||
lretq
|
||||
|
||||
|
||||
go_to_ignore_int:
|
||||
|
Loading…
x
Reference in New Issue
Block a user