diff options
Diffstat (limited to 'include/linux/ioport.h')
| -rw-r--r-- | include/linux/ioport.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 4b65d944717f..983bea05d69c 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -20,6 +20,7 @@ struct resource { resource_size_t end; const char *name; unsigned long flags; + unsigned long desc; struct resource *parent, *sibling, *child; }; @@ -112,6 +113,22 @@ struct resource { /* PCI control bits. Shares IORESOURCE_BITS with above PCI ROM. */ #define IORESOURCE_PCI_FIXED (1<<4) /* Do not move resource */ +/* + * I/O Resource Descriptors + * + * Descriptors are used by walk_iomem_res_desc() and region_intersects() + * for searching a specific resource range in the iomem table. Assign + * a new descriptor when a resource range supports the search interfaces. + * Otherwise, resource.desc must be set to IORES_DESC_NONE (0). + */ +enum { + IORES_DESC_NONE = 0, + IORES_DESC_CRASH_KERNEL = 1, + IORES_DESC_ACPI_TABLES = 2, + IORES_DESC_ACPI_NV_STORAGE = 3, + IORES_DESC_PERSISTENT_MEMORY = 4, + IORES_DESC_PERSISTENT_MEMORY_LEGACY = 5, +}; /* helpers to define resources */ #define DEFINE_RES_NAMED(_start, _size, _name, _flags) \ @@ -120,6 +137,7 @@ struct resource { .end = (_start) + (_size) - 1, \ .name = (_name), \ .flags = (_flags), \ + .desc = IORES_DESC_NONE, \ } #define DEFINE_RES_IO_NAMED(_start, _size, _name) \ |