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#ifndef _PCIDRIVER_IOCTL_H_
#define _PCIDRIVER_IOCTL_H_
#include <linux/ioctl.h>
#define PCIDRIVER_INTERFACE_VERSION 2 /**< Driver API version, only the pcilib with the same driver interface version is allowed */
/* Possible values for ioctl commands */
/* PCI mmap areas */
#define PCIDRIVER_BAR0 0
#define PCIDRIVER_BAR1 1
#define PCIDRIVER_BAR2 2
#define PCIDRIVER_BAR3 3
#define PCIDRIVER_BAR4 4
#define PCIDRIVER_BAR5 5
/* mmap mode of the device */
#define PCIDRIVER_MMAP_PCI 0
#define PCIDRIVER_MMAP_KMEM 1
/* Direction of a DMA operation */
#define PCIDRIVER_DMA_BIDIRECTIONAL 0
#define PCIDRIVER_DMA_TODEVICE 1 // PCILIB_KMEM_SYNC_TODEVICE
#define PCIDRIVER_DMA_FROMDEVICE 2 // PCILIB_KMEM_SYNC_FROMDEVICE
/* Possible sizes in a PCI command */
#define PCIDRIVER_PCI_CFG_SZ_BYTE 1
#define PCIDRIVER_PCI_CFG_SZ_WORD 2
#define PCIDRIVER_PCI_CFG_SZ_DWORD 3
/* Possible types of SG lists */
#define PCIDRIVER_SG_NONMERGED 0
#define PCIDRIVER_SG_MERGED 1
#define KMEM_REF_HW 0x80000000 /**< Special reference to indicate hardware access */
#define KMEM_REF_COUNT 0x0FFFFFFF /**< Mask of reference counter (mmap/munmap), couting in mmaped memory pages */
#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 KMEM_FLAG_REUSE PCILIB_KMEM_FLAG_REUSE /**< Try to reuse existing buffer with the same use & item */
#define KMEM_FLAG_EXCLUSIVE PCILIB_KMEM_FLAG_EXCLUSIVE /**< Allow only a single application accessing a specified use & item */
#define KMEM_FLAG_PERSISTENT PCILIB_KMEM_FLAG_PERSISTENT /**< Sets persistent mode */
#define KMEM_FLAG_HW PCILIB_KMEM_FLAG_HARDWARE /**< The buffer may be accessed by hardware, the hardware access will not occur any more if passed to _free function */
#define KMEM_FLAG_FORCE PCILIB_KMEM_FLAG_FORCE /**< Force memory cleanup even if references are present */
#define KMEM_FLAG_MASS PCILIB_KMEM_FLAG_MASS /**< Apply to all buffers of selected use */
#define KMEM_FLAG_TRY PCILIB_KMEM_FLAG_TRY /**< Do not allocate buffers, try to reuse and fail if not possible */
#define KMEM_FLAG_REUSED PCILIB_KMEM_FLAG_REUSE /**< Indicates if buffer with specified use & item was already allocated and reused */
#define KMEM_FLAG_REUSED_PERSISTENT PCILIB_KMEM_FLAG_PERSISTENT /**< Indicates that reused buffer was persistent before the call */
#define KMEM_FLAG_REUSED_HW PCILIB_KMEM_FLAG_HARDWARE /**< Indicates that reused buffer had a HW reference before the call */
/* Types */
typedef struct {
unsigned long version; /**< pcilib version */
unsigned long interface; /**< driver interface version */
unsigned long ioctls; /**< number of supporterd ioctls */
unsigned long reserved[5]; /**< reserved for the future use */
} pcilib_driver_version_t;
typedef struct {
int iommu; /**< Specifies if IOMMU is enabled or disabled */
int mps; /**< PCIe maximum payload size */
int readrq; /**< PCIe read request size */
unsigned long dma_mask; /**< DMA mask */
} pcilib_device_state_t;
typedef struct {
unsigned short vendor_id;
unsigned short device_id;
unsigned short bus;
unsigned short slot;
unsigned short func;
unsigned short devfn;
unsigned char interrupt_pin;
unsigned char interrupt_line;
unsigned int irq;
unsigned long bar_start[6];
unsigned long bar_length[6];
unsigned long bar_flags[6];
} pcilib_board_info_t;
typedef struct {
unsigned long type;
unsigned long pa;
unsigned long ba;
unsigned long size;
unsigned long align;
unsigned long use;
unsigned long item;
int flags;
int handle_id;
} kmem_handle_t;
typedef struct {
unsigned long addr;
unsigned long size;
} umem_sgentry_t;
typedef struct {
int handle_id;
int type;
int nents;
umem_sgentry_t *sg;
} umem_sglist_t;
typedef struct {
unsigned long vma;
unsigned long size;
int handle_id;
int dir;
} umem_handle_t;
typedef struct {
kmem_handle_t handle;
int dir;
} kmem_sync_t;
typedef struct {
unsigned long count;
unsigned long timeout; // microseconds
unsigned int source;
} interrupt_wait_t;
typedef struct {
int size;
int addr;
union {
unsigned char byte;
unsigned short word;
unsigned int dword; /* not strict C, but if not can have problems */
} val;
} pci_cfg_cmd;
/* ioctl interface */
/* See documentation for a detailed usage explanation */
/*
* one of the problems of ioctl, is that requires a type definition.
* This type is only 8-bits wide, and half-documented in
* <linux-src>/Documentation/ioctl-number.txt.
* previous SHL -> 'S' definition, conflicts with several devices,
* so I changed it to be pci -> 'p', in the range 0xA0-BF
*/
#define PCIDRIVER_IOC_MAGIC 'p'
#define PCIDRIVER_IOC_BASE 0xA0
#define PCIDRIVER_IOC_MMAP_MODE _IO( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 0 )
#define PCIDRIVER_IOC_MMAP_AREA _IO( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 1 )
#define PCIDRIVER_IOC_KMEM_ALLOC _IOWR( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 2, kmem_handle_t * )
#define PCIDRIVER_IOC_KMEM_FREE _IOW ( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 3, kmem_handle_t * )
#define PCIDRIVER_IOC_KMEM_SYNC _IOWR( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 4, kmem_sync_t * )
#define PCIDRIVER_IOC_UMEM_SGMAP _IOWR( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 5, umem_handle_t * )
#define PCIDRIVER_IOC_UMEM_SGUNMAP _IOW( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 6, umem_handle_t * )
#define PCIDRIVER_IOC_UMEM_SGGET _IOWR( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 7, umem_sglist_t * )
#define PCIDRIVER_IOC_UMEM_SYNC _IOW( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 8, umem_handle_t * )
#define PCIDRIVER_IOC_WAITI _IO( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 9 )
/* And now, the methods to access the PCI configuration area */
#define PCIDRIVER_IOC_PCI_CFG_RD _IOWR( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 10, pci_cfg_cmd * )
#define PCIDRIVER_IOC_PCI_CFG_WR _IOWR( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 11, pci_cfg_cmd * )
#define PCIDRIVER_IOC_PCI_INFO _IOWR( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 12, pcilib_board_info_t * )
/* Clear interrupt queues */
#define PCIDRIVER_IOC_CLEAR_IOQ _IO( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 13 )
#define PCIDRIVER_IOC_VERSION _IOR( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 14, pcilib_driver_version_t * )
#define PCIDRIVER_IOC_DEVICE_STATE _IOR( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 15, pcilib_device_state_t * )
#define PCIDRIVER_IOC_DMA_MASK _IO( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 16)
#define PCIDRIVER_IOC_MPS _IO( PCIDRIVER_IOC_MAGIC, PCIDRIVER_IOC_BASE + 17)
#define PCIDRIVER_IOC_MAX 17
#endif /* _PCIDRIVER_IOCTL_H */
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