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- #ifndef _PCIDRIVER_COMMON_H
- #define _PCIDRIVER_COMMON_H
- #include "../kmem.h"
- /*************************************************************************/
- /* Private data types and structures */
- /* Define an entry in the kmem list (this list is per device) */
- /* This list keeps references to the allocated kernel buffers */
- typedef struct {
- int id;
- enum dma_data_direction direction;
-
- struct list_head list;
- dma_addr_t dma_handle;
- unsigned long cpua;
- unsigned long size;
- unsigned long type;
- unsigned long align;
- 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;
- /* Define an entry in the umem list (this list is per device) */
- /* This list keeps references to the SG lists for each mapped userspace region */
- typedef struct {
- int id;
- struct list_head list;
- unsigned int nr_pages; /* number of pages for this user memeory area */
- struct page **pages; /* list of pointers to the pages */
- unsigned int nents; /* actual entries in the scatter/gatter list (NOT nents for the map function, but the result) */
- struct scatterlist *sg; /* list of sg entries */
- struct class_device_attribute sysfs_attr; /* initialized when adding the entry */
- } pcidriver_umem_entry_t;
- /* Hold the driver private data */
- typedef struct {
- dev_t devno; /* device number (major and minor) */
- struct pci_dev *pdev; /* PCI device */
- struct class_device *class_dev; /* Class device */
- struct cdev cdev; /* char device struct */
- int mmap_mode; /* current mmap mode */
- int mmap_area; /* current PCI mmap area */
- #ifdef ENABLE_IRQ
- int irq_enabled; /* Non-zero if IRQ is enabled */
- int irq_count; /* Just an IRQ counter */
- wait_queue_head_t irq_queues[ PCIDRIVER_INT_MAXSOURCES ];
- /* One queue per interrupt source */
- atomic_t irq_outstanding[ PCIDRIVER_INT_MAXSOURCES ];
- /* Outstanding interrupts per queue */
- volatile unsigned int *bars_kmapped[6]; /* PCI BARs mmapped in kernel space */
- #endif
-
- spinlock_t kmemlist_lock; /* Spinlock to lock kmem list operations */
- struct list_head kmem_list; /* List of 'kmem_list_entry's associated with this device */
- atomic_t kmem_count; /* id for next kmem entry */
- 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 */
- atomic_t umem_count; /* id for next umem entry */
- int msi_mode; /* Flag specifying if interrupt have been initialized in MSI mode */
- atomic_t refs; /* Reference counter */
- } pcidriver_privdata_t;
- void pcidriver_module_get(pcidriver_privdata_t *privdata);
- void pcidriver_module_put(pcidriver_privdata_t *privdata);
- /*************************************************************************/
- /* Some nice defines that make code more readable */
- /* This is to print nice info in the log */
- #ifdef DEBUG
- #define mod_info( args... ) \
- do { printk( KERN_INFO "%s - %s : ", MODNAME , __FUNCTION__ );\
- printk( args ); } while(0)
- #define mod_info_dbg( args... ) \
- do { printk( KERN_INFO "%s - %s : ", MODNAME , __FUNCTION__ );\
- printk( args ); } while(0)
- #else
- #define mod_info( args... ) \
- do { printk( KERN_INFO "%s: ", MODNAME );\
- printk( args ); } while(0)
- #define mod_info_dbg( args... )
- #endif
- #define mod_crit( args... ) \
- do { printk( KERN_CRIT "%s: ", MODNAME );\
- printk( args ); } while(0)
- #define MIN(a, b) ((a) < (b) ? (a) : (b))
- #endif
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