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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_MSI_H
#define _ASM_X86_MSI_H
#include <asm/hw_irq.h>
#include <asm/irqdomain.h>
typedef struct irq_alloc_info msi_alloc_info_t;
int pci_msi_prepare(struct irq_domain *domain, struct device *dev, int nvec,
msi_alloc_info_t *arg);
/* Structs and defines for the X86 specific MSI message format */
typedef struct x86_msi_data {
union {
struct {
u32 vector : 8,
delivery_mode : 3,
dest_mode_logical : 1,
reserved : 2,
active_low : 1,
is_level : 1;
};
u32 dmar_subhandle;
};
} __attribute__ ((packed)) arch_msi_msg_data_t;
#define arch_msi_msg_data x86_msi_data
typedef struct x86_msi_addr_lo {
union {
struct {
u32 reserved_0 : 2,
dest_mode_logical : 1,
redirect_hint : 1,
reserved_1 : 1,
virt_destid_8_14 : 7,
destid_0_7 : 8,
base_address : 12;
};
struct {
u32 dmar_reserved_0 : 2,
dmar_index_15 : 1,
dmar_subhandle_valid : 1,
dmar_format : 1,
dmar_index_0_14 : 15,
dmar_base_address : 12;
};
};
} __attribute__ ((packed)) arch_msi_msg_addr_lo_t;
#define arch_msi_msg_addr_lo x86_msi_addr_lo
#define X86_MSI_BASE_ADDRESS_LOW (0xfee00000 >> 20)
typedef struct x86_msi_addr_hi {
u32 reserved : 8,
destid_8_31 : 24;
} __attribute__ ((packed)) arch_msi_msg_addr_hi_t;
#define arch_msi_msg_addr_hi x86_msi_addr_hi
#define X86_MSI_BASE_ADDRESS_HIGH (0)
struct msi_msg;
u32 x86_msi_msg_get_destid(struct msi_msg *msg, bool extid);
#endif /* _ASM_X86_MSI_H */