1 #include <lwk/kernel.h>
3 #include <lwk/kallsyms.h>
7 #include <lwk/palacios.h>
9 #include <arch/idt_vectors.h>
10 #include <arch/show.h>
11 #include <arch/xcall.h>
12 #include <arch/i387.h>
15 idtvec_handler_t idtvec_table[NUM_IDT_ENTRIES];
16 static DEFINE_SPINLOCK(idtvec_table_lock);
18 extern void asm_idtvec_table(void);
21 do_unhandled_idt_vector(struct pt_regs *regs, unsigned int vector)
23 if ((vector >= IRQ0_VECTOR) && (vector <= IRQ15_VECTOR)) {
25 "Unhandled Interrupt! (vector=%u, isa_irq=%u)\n",
26 vector, vector - IRQ0_VECTOR);
29 "Unhandled Interrupt! (vector=%u)\n", vector);
34 do_divide_error(struct pt_regs *regs, unsigned int vector)
36 printk("Divide Error Exception\n");
42 do_nmi(struct pt_regs *regs, unsigned int vector)
44 printk("NMI Exception\n");
50 do_int3(struct pt_regs *regs, unsigned int vector)
52 printk("INT3 Exception\n");
58 do_overflow(struct pt_regs *regs, unsigned int vector)
60 printk("Overflow Exception\n");
66 do_bounds(struct pt_regs *regs, unsigned int vector)
68 printk("Bounds Exception\n");
74 do_invalid_op(struct pt_regs *regs, unsigned int vector)
76 printk("Invalid Op Exception\n");
82 do_device_not_available(struct pt_regs *regs, unsigned int vector)
84 BUG_ON(current->arch.flags & TF_USED_FPU);
85 current->arch.flags |= TF_USED_FPU;
87 fpu_restore_state(current);
91 do_double_fault(struct pt_regs *regs, unsigned int vector)
93 printk("Double Fault Exception\n");
99 do_coproc_segment_overrun(struct pt_regs *regs, unsigned int vector)
101 printk("Coprocessor Segment Exception\n");
102 show_registers(regs);
107 do_invalid_tss(struct pt_regs *regs, unsigned int vector)
109 printk("Invalid TSS Exception)\n");
110 show_registers(regs);
115 do_segment_not_present(struct pt_regs *regs, unsigned int vector)
117 printk("Segment Not Present Exception\n");
118 show_registers(regs);
123 do_stack_segment(struct pt_regs *regs, unsigned int vector)
125 printk("Stack Segment Exception\n");
126 show_registers(regs);
131 do_general_protection(struct pt_regs *regs, unsigned int vector)
133 printk("General Protection Exception\n");
134 show_registers(regs);
139 do_page_fault(struct pt_regs *regs, unsigned int vector)
141 printk("Page Fault Exception (regs %p)\n", regs );
143 static uint8_t recursive_fault;
144 if( recursive_fault++ )
145 panic( "Recursive page fault! Halt and catch fire!" );
147 show_registers(regs);
152 do_spurious_interrupt_bug(struct pt_regs *regs, unsigned int vector)
154 printk("Spurious Interrupt Exception\n");
155 show_registers(regs);
160 do_coprocessor_error(struct pt_regs *regs, unsigned int vector)
162 printk("Coprocessor Error Exception\n");
163 show_registers(regs);
168 do_alignment_check(struct pt_regs *regs, unsigned int vector)
170 printk("Alignment Check Exception\n");
171 show_registers(regs);
176 do_machine_check(struct pt_regs *regs, unsigned int vector)
178 printk("Machine Check Exception\n");
179 show_registers(regs);
184 do_simd_coprocessor_error(struct pt_regs *regs, unsigned int vector)
186 printk("SIMD Coprocessor Error Exception\n");
187 show_registers(regs);
192 do_apic_timer(struct pt_regs *regs, unsigned int vector)
198 do_apic_perf_counter(struct pt_regs *regs, unsigned int vector)
200 printk("APIC Perf. Counter Interrupt, vector=%u\n", vector);
201 show_registers(regs);
206 do_apic_thermal(struct pt_regs *regs, unsigned int vector)
208 printk("APIC Thermal Interrupt, vector=%u\n", vector);
209 show_registers(regs);
214 do_apic_error(struct pt_regs *regs, unsigned int vector)
216 printk("APIC Error Interrupt, vector=%u\n", vector);
217 show_registers(regs);
222 do_apic_spurious(struct pt_regs *regs, unsigned int vector)
224 printk("APIC Spurious Interrupt, vector=%u\n", vector);
225 show_registers(regs);
230 do_keyboard_interrupt(struct pt_regs *regs, unsigned int vector)
232 const uint8_t KB_OUTPUT_FULL = 0x01;
233 const uint8_t KB_STATUS_PORT = 0x64;
234 const uint8_t KB_DATA_PORT = 0x60;
236 uint8_t status = inb( KB_STATUS_PORT );
238 if( (status & KB_OUTPUT_FULL) == 0 )
241 uint8_t key = inb( KB_DATA_PORT );
243 send_key_to_vmm( status, key );
249 set_idtvec_handler(unsigned int vector, idtvec_handler_t handler)
251 char namebuf[KSYM_NAME_LEN+1];
252 unsigned long symsize, offset;
253 unsigned long irqstate;
255 ASSERT(vector < NUM_IDT_ENTRIES);
257 if (handler != &do_unhandled_idt_vector) {
258 printk(KERN_DEBUG "IDT Vector %3u -> %s()\n",
259 vector, kallsyms_lookup( (unsigned long)handler,
260 &symsize, &offset, namebuf )
264 spin_lock_irqsave(&idtvec_table_lock, irqstate);
265 idtvec_table[vector] = handler;
266 spin_unlock_irqrestore(&idtvec_table_lock, irqstate);
270 do_interrupt(struct pt_regs *regs, unsigned int vector)
272 idtvec_table[vector](regs, vector);
273 if (vector >= FIRST_EXTERNAL_VECTOR)
274 lapic_ack_interrupt();
278 interrupts_init(void)
283 * Initialize the Interrupt Descriptor Table (IDT).
285 for (vector = 0; vector < NUM_IDT_ENTRIES; vector++) {
286 void *asm_handler = (void *) (
287 (uintptr_t)(&asm_idtvec_table) + (vector * 16)
289 set_intr_gate(vector, asm_handler);
290 set_idtvec_handler(vector, &do_unhandled_idt_vector);
294 * Register handlers for the standard x86_64 interrupts & exceptions.
296 set_idtvec_handler( DIVIDE_ERROR_VECTOR, &do_divide_error );
297 set_idtvec_handler( NMI_VECTOR, &do_nmi );
298 set_idtvec_handler( INT3_VECTOR, &do_int3 );
299 set_idtvec_handler( OVERFLOW_VECTOR, &do_overflow );
300 set_idtvec_handler( BOUNDS_VECTOR, &do_bounds );
301 set_idtvec_handler( INVALID_OP_VECTOR, &do_invalid_op );
302 set_idtvec_handler( DEVICE_NOT_AVAILABLE_VECTOR, &do_device_not_available );
303 set_idtvec_handler( DOUBLE_FAULT_VECTOR, &do_double_fault );
304 set_idtvec_handler( COPROC_SEGMENT_OVERRUN_VECTOR, &do_coproc_segment_overrun );
305 set_idtvec_handler( INVALID_TSS_VECTOR, &do_invalid_tss );
306 set_idtvec_handler( SEGMENT_NOT_PRESENT_VECTOR, &do_segment_not_present );
307 set_idtvec_handler( STACK_SEGMENT_VECTOR, &do_stack_segment );
308 set_idtvec_handler( GENERAL_PROTECTION_VECTOR, &do_general_protection );
309 set_idtvec_handler( PAGE_FAULT_VECTOR, &do_page_fault );
310 set_idtvec_handler( SPURIOUS_INTERRUPT_BUG_VECTOR, &do_spurious_interrupt_bug );
311 set_idtvec_handler( COPROCESSOR_ERROR_VECTOR, &do_coprocessor_error );
312 set_idtvec_handler( ALIGNMENT_CHECK_VECTOR, &do_alignment_check );
313 set_idtvec_handler( MACHINE_CHECK_VECTOR, &do_machine_check );
314 set_idtvec_handler( SIMD_COPROCESSOR_ERROR_VECTOR, &do_simd_coprocessor_error );
315 set_idtvec_handler( IRQ1_VECTOR, &do_keyboard_interrupt );
318 * Register handlers for all of the local APIC vectors.
320 set_idtvec_handler( APIC_TIMER_VECTOR, &do_apic_timer );
321 set_idtvec_handler( APIC_PERF_COUNTER_VECTOR, &do_apic_perf_counter );
322 set_idtvec_handler( APIC_THERMAL_VECTOR, &do_apic_thermal );
323 set_idtvec_handler( APIC_ERROR_VECTOR, &do_apic_error );
324 set_idtvec_handler( APIC_SPURIOUS_VECTOR, &do_apic_spurious );
327 * Register handlers for inter-CPU interrupts (cross calls).
329 set_idtvec_handler( XCALL_FUNCTION_VECTOR, &arch_xcall_function_interrupt );
330 set_idtvec_handler( XCALL_RESCHEDULE_VECTOR, &arch_xcall_reschedule_interrupt );