[linux-2.6-block.git] / arch / x86 / include / asm / msi.h

/* 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);

#define X86_VECTOR_MSI_FLAGS_SUPPORTED					\
	(MSI_GENERIC_FLAGS_MASK | MSI_FLAG_PCI_MSIX | MSI_FLAG_PCI_MSIX_ALLOC_DYN)

#define X86_VECTOR_MSI_FLAGS_REQUIRED					\
	(MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS)

#endif /* _ASM_X86_MSI_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
52f518a3 JL	2	#ifndef _ASM_X86_MSI_H
	3	#define _ASM_X86_MSI_H
	4	#include <asm/hw_irq.h>
c8f3e518	5	#include <asm/irqdomain.h>
52f518a3 JL	6
	7	typedef struct irq_alloc_info msi_alloc_info_t;
	8
c8f3e518 JO	9	int pci_msi_prepare(struct irq_domain domain, struct device dev, int nvec,
	10	msi_alloc_info_t *arg);
	11
6285aa50 TG	12	/* Structs and defines for the X86 specific MSI message format */
	13
	14	typedef struct x86_msi_data {
59b18a1e RB	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	};
6285aa50 TG	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,
ab0f59c6 DW	35	reserved_1 : 1,
ab0f59c6 DW	36	virt_destid_8_14 : 7,
6285aa50 TG	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
b6d5fc3a	65	#define X86_VECTOR_MSI_FLAGS_SUPPORTED \
486254ad	66	(MSI_GENERIC_FLAGS_MASK \| MSI_FLAG_PCI_MSIX \| MSI_FLAG_PCI_MSIX_ALLOC_DYN)
b6d5fc3a TG	67
	68	#define X86_VECTOR_MSI_FLAGS_REQUIRED \
	69	(MSI_FLAG_USE_DEF_DOM_OPS \| MSI_FLAG_USE_DEF_CHIP_OPS)
	70
52f518a3	71	#endif /* _ASM_X86_MSI_H */