2 * MSI hooks for standard x86 apic
11 * Shifts for APIC-based data
14 #define MSI_DATA_VECTOR_SHIFT 0
15 #define MSI_DATA_VECTOR(v) (((u8)v) << MSI_DATA_VECTOR_SHIFT)
17 #define MSI_DATA_DELIVERY_SHIFT 8
18 #define MSI_DATA_DELIVERY_FIXED (0 << MSI_DATA_DELIVERY_SHIFT)
19 #define MSI_DATA_DELIVERY_LOWPRI (1 << MSI_DATA_DELIVERY_SHIFT)
21 #define MSI_DATA_LEVEL_SHIFT 14
22 #define MSI_DATA_LEVEL_DEASSERT (0 << MSI_DATA_LEVEL_SHIFT)
23 #define MSI_DATA_LEVEL_ASSERT (1 << MSI_DATA_LEVEL_SHIFT)
25 #define MSI_DATA_TRIGGER_SHIFT 15
26 #define MSI_DATA_TRIGGER_EDGE (0 << MSI_DATA_TRIGGER_SHIFT)
27 #define MSI_DATA_TRIGGER_LEVEL (1 << MSI_DATA_TRIGGER_SHIFT)
30 * Shift/mask fields for APIC-based bus address
33 #define MSI_ADDR_HEADER 0xfee00000
35 #define MSI_ADDR_DESTID_MASK 0xfff0000f
36 #define MSI_ADDR_DESTID_CPU(cpu) ((cpu) << MSI_TARGET_CPU_SHIFT)
38 #define MSI_ADDR_DESTMODE_SHIFT 2
39 #define MSI_ADDR_DESTMODE_PHYS (0 << MSI_ADDR_DESTMODE_SHIFT)
40 #define MSI_ADDR_DESTMODE_LOGIC (1 << MSI_ADDR_DESTMODE_SHIFT)
42 #define MSI_ADDR_REDIRECTION_SHIFT 3
43 #define MSI_ADDR_REDIRECTION_CPU (0 << MSI_ADDR_REDIRECTION_SHIFT)
44 #define MSI_ADDR_REDIRECTION_LOWPRI (1 << MSI_ADDR_REDIRECTION_SHIFT)
48 msi_target_apic(unsigned int vector
,
49 unsigned int dest_cpu
,
50 u32
*address_hi
, /* in/out */
51 u32
*address_lo
) /* in/out */
53 u32 addr
= *address_lo
;
55 addr
&= MSI_ADDR_DESTID_MASK
;
56 addr
|= MSI_ADDR_DESTID_CPU(cpu_physical_id(dest_cpu
));
62 msi_setup_apic(struct pci_dev
*pdev
, /* unused in generic */
68 unsigned long dest_phys_id
;
70 dest_phys_id
= cpu_physical_id(first_cpu(cpu_online_map
));
73 *address_lo
= MSI_ADDR_HEADER
|
74 MSI_ADDR_DESTMODE_PHYS
|
75 MSI_ADDR_REDIRECTION_CPU
|
76 MSI_ADDR_DESTID_CPU(dest_phys_id
);
78 *data
= MSI_DATA_TRIGGER_EDGE
|
79 MSI_DATA_LEVEL_ASSERT
|
80 MSI_DATA_DELIVERY_FIXED
|
81 MSI_DATA_VECTOR(vector
);
87 msi_teardown_apic(unsigned int vector
)
93 * Generic ops used on most IA archs/platforms. Set with msi_register()
96 struct msi_ops msi_apic_ops
= {
97 .setup
= msi_setup_apic
,
98 .teardown
= msi_teardown_apic
,
99 .target
= msi_target_apic
,