arch/x86/ioapic.cpp

65 struct io_apic {
83 static inline uint32_t apic_io_read_reg(struct io_apic* io_apic, uint8_t reg) TA_REQ(lock);
84 static inline void apic_io_write_reg(struct io_apic* io_apic, uint8_t reg,
88 static uint64_t apic_io_read_redirection_entry(struct io_apic* io_apic,
90 static void apic_io_write_redirection_entry(struct io_apic* io_apic, uint32_t global_irq,
94 static struct io_apic* apic_io_resolve_global_irq(uint32_t irq);
96 static struct io_apic* apic_io_resolve_global_irq_no_panic(uint32_t irq);
99 static fbl::Array<io_apic> io_apics;
117         io_apics.reset(new (&ac) io_apic[num_io_apics], num_io_apics);
126         struct io_apic* apic = &io_apics[i];
179 static struct io_apic* apic_io_resolve_global_irq_no_panic(uint32_t irq) {
190 static struct io_apic* apic_io_resolve_global_irq(uint32_t irq) {
191     struct io_apic* res = apic_io_resolve_global_irq_no_panic(irq);
200     struct io_apic* io_apic,
202     ASSERT(io_apic != nullptr);
204     *IO_APIC_IND(io_apic->vaddr) = reg;
205     uint32_t val = *IO_APIC_DAT(io_apic->vaddr);
210     struct io_apic* io_apic,
213     ASSERT(io_apic != nullptr);
215     *IO_APIC_IND(io_apic->vaddr) = reg;
216     *IO_APIC_DAT(io_apic->vaddr) = val;
220     struct io_apic* io_apic,
224     ASSERT(global_irq >= io_apic->desc.global_irq_base);
225     uint32_t offset = global_irq - io_apic->desc.global_irq_base;
226     ASSERT(offset <= io_apic->max_redirection_entry);
230     result |= apic_io_read_reg(io_apic, reg_id);
231     result |= ((uint64_t)apic_io_read_reg(io_apic, (uint8_t)(reg_id + 1))) << 32;
236     struct io_apic* io_apic,
241     ASSERT(global_irq >= io_apic->desc.global_irq_base);
242     uint32_t offset = global_irq - io_apic->desc.global_irq_base;
243     ASSERT(offset <= io_apic->max_redirection_entry);
246     apic_io_write_reg(io_apic, reg_id, (uint32_t)value);
247     apic_io_write_reg(io_apic, (uint8_t)(reg_id + 1), (uint32_t)(value >> 32));
268     struct io_apic* io_apic = apic_io_resolve_global_irq(global_irq);
272     ASSERT(io_apic->version >= IO_APIC_EOIR_MIN_VERSION);
273     *IO_APIC_EOIR(io_apic->vaddr) = vec;
277     struct io_apic* io_apic = apic_io_resolve_global_irq(global_irq);
281     uint64_t reg = apic_io_read_redirection_entry(io_apic, global_irq);
290     apic_io_write_redirection_entry(io_apic, global_irq, reg);
302     struct io_apic* io_apic = apic_io_resolve_global_irq(global_irq);
323     apic_io_write_redirection_entry(io_apic, global_irq, reg);
330     struct io_apic* io_apic = apic_io_resolve_global_irq(global_irq);
332     if (!io_apic)
337     uint64_t reg = apic_io_read_redirection_entry(io_apic, global_irq);
349     struct io_apic* io_apic = apic_io_resolve_global_irq(global_irq);
353     uint64_t reg = apic_io_read_redirection_entry(io_apic, global_irq);
363     apic_io_write_redirection_entry(io_apic, global_irq, reg);
367     struct io_apic* io_apic = apic_io_resolve_global_irq(global_irq);
371     uint64_t reg = apic_io_read_redirection_entry(io_apic, global_irq);
428         struct io_apic* apic = &io_apics[i];
441         struct io_apic* apic = &io_apics[i];
452         struct io_apic* apic = &io_apics[i];