include/asm-generic/msi.h

   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