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226 | palkovsky | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2001-2004 Jakub Jermar |
226 | palkovsky | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
1888 | jermar | 29 | /** @addtogroup amd64interrupt |
1702 | cejka | 30 | * @{ |
31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
226 | palkovsky | 35 | #include <arch/interrupt.h> |
36 | #include <print.h> |
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37 | #include <debug.h> |
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38 | #include <panic.h> |
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1477 | decky | 39 | #include <arch/drivers/i8259.h> |
226 | palkovsky | 40 | #include <func.h> |
41 | #include <cpu.h> |
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42 | #include <arch/asm.h> |
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43 | #include <mm/tlb.h> |
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703 | jermar | 44 | #include <mm/as.h> |
226 | palkovsky | 45 | #include <arch.h> |
268 | palkovsky | 46 | #include <symtab.h> |
282 | palkovsky | 47 | #include <arch/asm.h> |
309 | palkovsky | 48 | #include <proc/scheduler.h> |
391 | jermar | 49 | #include <proc/thread.h> |
1256 | jermar | 50 | #include <proc/task.h> |
51 | #include <synch/spinlock.h> |
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52 | #include <arch/ddi/ddi.h> |
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1258 | palkovsky | 53 | #include <interrupt.h> |
1958 | decky | 54 | #include <ddi/irq.h> |
226 | palkovsky | 55 | |
1958 | decky | 56 | /* |
57 | * Interrupt and exception dispatching. |
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58 | */ |
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59 | |||
60 | void (* disable_irqs_function)(uint16_t irqmask) = NULL; |
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61 | void (* enable_irqs_function)(uint16_t irqmask) = NULL; |
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62 | void (* eoi_function)(void) = NULL; |
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63 | |||
64 | void decode_istate(int n, istate_t *istate) |
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297 | palkovsky | 65 | { |
66 | char *symbol; |
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1780 | jermar | 67 | /* uint64_t *x = &istate->stack[0]; */ |
297 | palkovsky | 68 | |
1021 | jermar | 69 | if (!(symbol=get_symtab_entry(istate->rip))) |
286 | palkovsky | 70 | symbol = ""; |
71 | |||
1021 | jermar | 72 | printf("-----EXCEPTION(%d) OCCURED----- ( %s )\n",n, __FUNCTION__); |
1735 | decky | 73 | printf("%%rip: %#llx (%s)\n",istate->rip, symbol); |
74 | printf("ERROR_WORD=%#llx\n", istate->error_word); |
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75 | printf("%%rcs=%#llx, flags=%#llx, %%cr0=%#llx\n", istate->cs, istate->rflags, read_cr0()); |
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76 | printf("%%rax=%#llx, %%rcx=%#llx, %%rdx=%#llx\n", istate->rax, istate->rcx, istate->rdx); |
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77 | printf("%%rsi=%#llx, %%rdi=%#llx, %%r8 =%#llx\n", istate->rsi, istate->rdi, istate->r8); |
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78 | printf("%%r9 =%#llx, %%r10 =%#llx, %%r11=%#llx\n", istate->r9, istate->r10, istate->r11); |
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1100 | palkovsky | 79 | #ifdef CONFIG_DEBUG_ALLREGS |
1735 | decky | 80 | printf("%%r12=%#llx, %%r13=%#llx, %%r14=%#llx\n", istate->r12, istate->r13, istate->r14); |
81 | printf("%%r15=%#llx, %%rbx=%#llx, %%rbp=%#llx\n", istate->r15, istate->rbx, &istate->rbp); |
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1100 | palkovsky | 82 | #endif |
1735 | decky | 83 | printf("%%rsp=%#llx\n", &istate->stack[0]); |
286 | palkovsky | 84 | } |
85 | |||
1958 | decky | 86 | static void trap_virtual_eoi(void) |
87 | { |
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88 | if (eoi_function) |
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89 | eoi_function(); |
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90 | else |
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91 | panic("no eoi_function\n"); |
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226 | palkovsky | 92 | |
1958 | decky | 93 | } |
226 | palkovsky | 94 | |
1958 | decky | 95 | static void null_interrupt(int n, istate_t *istate) |
226 | palkovsky | 96 | { |
1595 | palkovsky | 97 | fault_if_from_uspace(istate, "unserviced interrupt: %d", n); |
1958 | decky | 98 | decode_istate(n, istate); |
226 | palkovsky | 99 | panic("unserviced interrupt\n"); |
100 | } |
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101 | |||
1256 | jermar | 102 | /** General Protection Fault. */ |
1958 | decky | 103 | static void gp_fault(int n, istate_t *istate) |
226 | palkovsky | 104 | { |
1256 | jermar | 105 | if (TASK) { |
106 | count_t ver; |
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107 | |||
108 | spinlock_lock(&TASK->lock); |
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109 | ver = TASK->arch.iomapver; |
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110 | spinlock_unlock(&TASK->lock); |
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111 | |||
112 | if (CPU->arch.iomapver_copy != ver) { |
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113 | /* |
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114 | * This fault can be caused by an early access |
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115 | * to I/O port because of an out-dated |
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116 | * I/O Permission bitmap installed on CPU. |
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117 | * Install the fresh copy and restart |
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118 | * the instruction. |
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119 | */ |
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120 | io_perm_bitmap_install(); |
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121 | return; |
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122 | } |
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1595 | palkovsky | 123 | fault_if_from_uspace(istate, "general protection fault"); |
1256 | jermar | 124 | } |
125 | |||
1958 | decky | 126 | decode_istate(n, istate); |
226 | palkovsky | 127 | panic("general protection fault\n"); |
128 | } |
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129 | |||
1958 | decky | 130 | static void ss_fault(int n, istate_t *istate) |
226 | palkovsky | 131 | { |
1595 | palkovsky | 132 | fault_if_from_uspace(istate, "stack fault"); |
1958 | decky | 133 | decode_istate(n, istate); |
226 | palkovsky | 134 | panic("stack fault\n"); |
135 | } |
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136 | |||
1958 | decky | 137 | static void nm_fault(int n, istate_t *istate) |
226 | palkovsky | 138 | { |
458 | decky | 139 | #ifdef CONFIG_FPU_LAZY |
309 | palkovsky | 140 | scheduler_fpu_lazy_request(); |
141 | #else |
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1595 | palkovsky | 142 | fault_if_from_uspace(istate, "fpu fault"); |
309 | palkovsky | 143 | panic("fpu fault"); |
144 | #endif |
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226 | palkovsky | 145 | } |
146 | |||
1958 | decky | 147 | static void tlb_shootdown_ipi(int n, istate_t *istate) |
226 | palkovsky | 148 | { |
149 | trap_virtual_eoi(); |
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150 | tlb_shootdown_ipi_recv(); |
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151 | } |
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152 | |||
1958 | decky | 153 | /** Handler of IRQ exceptions */ |
154 | static void irq_interrupt(int n, istate_t *istate) |
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155 | { |
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156 | ASSERT(n >= IVT_IRQBASE); |
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157 | |||
158 | int inum = n - IVT_IRQBASE; |
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159 | ASSERT(inum < IRQ_COUNT); |
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160 | ASSERT((inum != IRQ_PIC_SPUR) && (inum != IRQ_PIC1)); |
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161 | |||
162 | irq_t *irq = irq_dispatch_and_lock(inum); |
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163 | if (irq) { |
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164 | /* |
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165 | * The IRQ handler was found. |
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166 | */ |
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167 | irq->handler(irq, irq->arg); |
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168 | spinlock_unlock(&irq->lock); |
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169 | } else { |
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170 | /* |
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171 | * Spurious interrupt. |
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172 | */ |
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173 | #ifdef CONFIG_DEBUG |
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174 | printf("cpu%d: spurious interrupt (inum=%d)\n", CPU->id, inum); |
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175 | #endif |
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176 | } |
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177 | trap_virtual_eoi(); |
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178 | } |
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179 | |||
180 | void interrupt_init(void) |
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181 | { |
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182 | int i; |
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183 | |||
184 | for (i = 0; i < IVT_ITEMS; i++) |
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185 | exc_register(i, "null", (iroutine) null_interrupt); |
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186 | |||
187 | for (i = 0; i < IRQ_COUNT; i++) { |
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188 | if ((i != IRQ_PIC_SPUR) && (i != IRQ_PIC1)) |
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189 | exc_register(IVT_IRQBASE + i, "irq", (iroutine) irq_interrupt); |
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190 | } |
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191 | |||
192 | exc_register(7, "nm_fault", (iroutine) nm_fault); |
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193 | exc_register(12, "ss_fault", (iroutine) ss_fault); |
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194 | exc_register(13, "gp_fault", (iroutine) gp_fault); |
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195 | exc_register(14, "ident_mapper", (iroutine) ident_page_fault); |
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196 | |||
197 | #ifdef CONFIG_SMP |
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198 | exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown", (iroutine) tlb_shootdown_ipi); |
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199 | #endif |
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200 | } |
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201 | |||
1780 | jermar | 202 | void trap_virtual_enable_irqs(uint16_t irqmask) |
226 | palkovsky | 203 | { |
204 | if (enable_irqs_function) |
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205 | enable_irqs_function(irqmask); |
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206 | else |
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207 | panic("no enable_irqs_function\n"); |
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208 | } |
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209 | |||
1780 | jermar | 210 | void trap_virtual_disable_irqs(uint16_t irqmask) |
226 | palkovsky | 211 | { |
212 | if (disable_irqs_function) |
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213 | disable_irqs_function(irqmask); |
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214 | else |
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215 | panic("no disable_irqs_function\n"); |
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216 | } |
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217 | |||
1888 | jermar | 218 | /** @} |
1702 | cejka | 219 | */ |