diff options
Diffstat (limited to 'driver/common.h')
| -rw-r--r-- | driver/common.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/driver/common.h b/driver/common.h index e45ae25..b79d5ec 100644 --- a/driver/common.h +++ b/driver/common.h @@ -6,6 +6,14 @@ /*************************************************************************/ /* Private data types and structures */ +#define KMEM_REF_HW 0x80000000 /**< Special reference to indicate hardware access */ +#define KMEM_REF_COUNT 0x0FFFFFFF /**< Mask of reference counter (mmap/munmap) */ + +#define KMEM_MODE_REUSABLE 0x80000000 /**< Indicates reusable buffer */ +#define KMEM_MODE_EXCLUSIVE 0x40000000 /**< Only a single process is allowed to mmap the buffer */ +#define KMEM_MODE_PERSISTENT 0x20000000 /**< Persistent mode instructs kmem_free to preserve buffer in memory */ +#define KMEM_MODE_COUNT 0x0FFFFFFF /**< Mask of reuse counter (alloc/free) */ + /* Define an entry in the kmem list (this list is per device) */ /* This list keeps references to the allocated kernel buffers */ typedef struct { @@ -15,8 +23,14 @@ typedef struct { unsigned long cpua; unsigned long size; unsigned long type; + unsigned long use; unsigned long item; + + spinlock_t lock; + unsigned long mode; + unsigned long refs; + struct class_device_attribute sysfs_attr; /* initialized when adding the entry */ } pcidriver_kmem_entry_t; @@ -57,7 +71,7 @@ typedef struct { struct list_head kmem_list; /* List of 'kmem_list_entry's associated with this device */ atomic_t kmem_count; /* id for next kmem entry */ - pcidriver_kmem_entry_t *kmem_cur; /* Currently selected kmem buffer, for mmap */ + int kmem_cur_id; /* Currently selected kmem buffer, for mmap */ spinlock_t umemlist_lock; /* Spinlock to lock umem list operations */ struct list_head umem_list; /* List of 'umem_list_entry's associated with this device */ |