[mirror_ubuntu-bionic-kernel.git] / include / asm-generic / msi.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_GENERIC_MSI_H
#define __ASM_GENERIC_MSI_H

#include <linux/types.h>

#ifndef NUM_MSI_ALLOC_SCRATCHPAD_REGS
# define NUM_MSI_ALLOC_SCRATCHPAD_REGS	2
#endif

struct msi_desc;

/**
 * struct msi_alloc_info - Default structure for MSI interrupt allocation.
 * @desc:	Pointer to msi descriptor
 * @hwirq:	Associated hw interrupt number in the domain
 * @scratchpad:	Storage for implementation specific scratch data
 *
 * Architectures can provide their own implementation by not including
 * asm-generic/msi.h into their arch specific header file.
 */
typedef struct msi_alloc_info {
	struct msi_desc			*desc;
	irq_hw_number_t			hwirq;
	union {
		unsigned long		ul;
		void			*ptr;
	} scratchpad[NUM_MSI_ALLOC_SCRATCHPAD_REGS];
} msi_alloc_info_t;

#define GENERIC_MSI_DOMAIN_OPS		1

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
926ff9ad TG	2	#ifndef __ASM_GENERIC_MSI_H
	3	#define __ASM_GENERIC_MSI_H
	4
	5	#include <linux/types.h>
	6
	7	#ifndef NUM_MSI_ALLOC_SCRATCHPAD_REGS
	8	# define NUM_MSI_ALLOC_SCRATCHPAD_REGS 2
	9	#endif
	10
	11	struct msi_desc;
	12
	13	/**
	14	* struct msi_alloc_info - Default structure for MSI interrupt allocation.
	15	* @desc: Pointer to msi descriptor
	16	* @hwirq: Associated hw interrupt number in the domain
	17	* @scratchpad: Storage for implementation specific scratch data
	18	*
	19	* Architectures can provide their own implementation by not including
	20	* asm-generic/msi.h into their arch specific header file.
	21	*/
	22	typedef struct msi_alloc_info {
	23	struct msi_desc *desc;
	24	irq_hw_number_t hwirq;
	25	union {
	26	unsigned long ul;
	27	void *ptr;
	28	} scratchpad[NUM_MSI_ALLOC_SCRATCHPAD_REGS];
	29	} msi_alloc_info_t;
	30
	31	#define GENERIC_MSI_DOMAIN_OPS 1
	32
	33	#endif