1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _ASM_X86_MSI_H |
3 | #define _ASM_X86_MSI_H |
4 | #include <asm/hw_irq.h> |
5 | #include <asm/irqdomain.h> |
6 | |
7 | typedef struct irq_alloc_info msi_alloc_info_t; |
8 | |
9 | int pci_msi_prepare(struct irq_domain *domain, struct device *dev, int nvec, |
10 | msi_alloc_info_t *arg); |
11 | |
12 | /* Structs and defines for the X86 specific MSI message format */ |
13 | |
14 | typedef struct x86_msi_data { |
15 | union { |
16 | struct { |
17 | u32 vector : 8, |
18 | delivery_mode : 3, |
19 | dest_mode_logical : 1, |
20 | reserved : 2, |
21 | active_low : 1, |
22 | is_level : 1; |
23 | }; |
24 | u32 dmar_subhandle; |
25 | }; |
26 | } __attribute__ ((packed)) arch_msi_msg_data_t; |
27 | #define arch_msi_msg_data x86_msi_data |
28 | |
29 | typedef struct x86_msi_addr_lo { |
30 | union { |
31 | struct { |
32 | u32 reserved_0 : 2, |
33 | dest_mode_logical : 1, |
34 | redirect_hint : 1, |
35 | reserved_1 : 1, |
36 | virt_destid_8_14 : 7, |
37 | destid_0_7 : 8, |
38 | base_address : 12; |
39 | }; |
40 | struct { |
41 | u32 dmar_reserved_0 : 2, |
42 | dmar_index_15 : 1, |
43 | dmar_subhandle_valid : 1, |
44 | dmar_format : 1, |
45 | dmar_index_0_14 : 15, |
46 | dmar_base_address : 12; |
47 | }; |
48 | }; |
49 | } __attribute__ ((packed)) arch_msi_msg_addr_lo_t; |
50 | #define arch_msi_msg_addr_lo x86_msi_addr_lo |
51 | |
52 | #define X86_MSI_BASE_ADDRESS_LOW (0xfee00000 >> 20) |
53 | |
54 | typedef struct x86_msi_addr_hi { |
55 | u32 reserved : 8, |
56 | destid_8_31 : 24; |
57 | } __attribute__ ((packed)) arch_msi_msg_addr_hi_t; |
58 | #define arch_msi_msg_addr_hi x86_msi_addr_hi |
59 | |
60 | #define X86_MSI_BASE_ADDRESS_HIGH (0) |
61 | |
62 | struct msi_msg; |
63 | u32 x86_msi_msg_get_destid(struct msi_msg *msg, bool extid); |
64 | |
65 | #define X86_VECTOR_MSI_FLAGS_SUPPORTED \ |
66 | (MSI_GENERIC_FLAGS_MASK | MSI_FLAG_PCI_MSIX | MSI_FLAG_PCI_MSIX_ALLOC_DYN) |
67 | |
68 | #define X86_VECTOR_MSI_FLAGS_REQUIRED \ |
69 | (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS) |
70 | |
71 | #endif /* _ASM_X86_MSI_H */ |
72 | |