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

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