1 #include <xen/irq.h>
2 #include <xen/sched.h>
3 #include <asm/current.h>
4 #include <asm/smp.h>
5 #include <asm/hardirq.h>
6 #include <mach_apic.h>
7 
8 
target_cpus_all(void)9 const cpumask_t *target_cpus_all(void)
10 {
11 	return &cpu_online_map;
12 }
13 
14 /*
15  * LOGICAL FLAT DELIVERY MODE (multicast via bitmask to <= 8 logical APIC IDs).
16  */
17 
init_apic_ldr_flat(void)18 void init_apic_ldr_flat(void)
19 {
20 	unsigned long val;
21 
22 	apic_write(APIC_DFR, APIC_DFR_FLAT);
23 	val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
24 	val |= SET_xAPIC_LOGICAL_ID(1UL << smp_processor_id());
25 	apic_write(APIC_LDR, val);
26 }
27 
clustered_apic_check_flat(void)28 void __init clustered_apic_check_flat(void)
29 {
30 	printk("Enabling APIC mode:  Flat.  Using %d I/O APICs\n", nr_ioapics);
31 }
32 
vector_allocation_cpumask_flat(int cpu)33 const cpumask_t *vector_allocation_cpumask_flat(int cpu)
34 {
35 	return &cpu_online_map;
36 }
37 
cpu_mask_to_apicid_flat(const cpumask_t * cpumask)38 unsigned int cpu_mask_to_apicid_flat(const cpumask_t *cpumask)
39 {
40 	return cpumask_bits(cpumask)[0]&0xFF;
41 }
42 
43 /*
44  * PHYSICAL DELIVERY MODE (unicast to physical APIC IDs).
45  */
46 
init_apic_ldr_phys(void)47 void init_apic_ldr_phys(void)
48 {
49 	unsigned long val;
50 	apic_write(APIC_DFR, APIC_DFR_FLAT);
51 	/* A dummy logical ID should be fine. We only deliver in phys mode. */
52 	val = apic_read(APIC_LDR) & ~APIC_LDR_MASK;
53 	apic_write(APIC_LDR, val);
54 }
55 
clustered_apic_check_phys(void)56 void __init clustered_apic_check_phys(void)
57 {
58 	printk("Enabling APIC mode:  Phys.  Using %d I/O APICs\n", nr_ioapics);
59 }
60 
vector_allocation_cpumask_phys(int cpu)61 const cpumask_t *vector_allocation_cpumask_phys(int cpu)
62 {
63 	return cpumask_of(cpu);
64 }
65 
cpu_mask_to_apicid_phys(const cpumask_t * cpumask)66 unsigned int cpu_mask_to_apicid_phys(const cpumask_t *cpumask)
67 {
68 	/* As we are using single CPU as destination, pick only one CPU here */
69 	return cpu_physical_id(cpumask_any(cpumask));
70 }
71