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/* GRTC Telecommand (TC) decoder driver interface
*
* COPYRIGHT (c) 2007.
* Cobham Gaisler AB.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#ifndef __GRTC_H__
#define __GRTC_H__
#ifdef __cplusplus
extern "C" {
#endif
#define GRTC_IOC_UNUSED 0
/* Driver operation controlling commands */
#define GRTC_IOC_START 1
#define GRTC_IOC_STOP 2
#define GRTC_IOC_ISSTARTED 3
#define GRTC_IOC_SET_BLOCKING_MODE 4 /* Raw mode only */
#define GRTC_IOC_SET_TIMEOUT 5 /* Raw mode only */
#define GRTC_IOC_ADD_BUFF 16 /* Frame mode only */
#define GRTC_IOC_RECV 17 /* Frame mode only */
/* Available only in STOPPED mode */
#define GRTC_IOC_SET_MODE 32 /* Set frame mode (ioctl) or raw mode (read) */
#define GRTC_IOC_SET_BUF_PARAM 33
#define GRTC_IOC_SET_CONFIG 34
#define GRTC_IOC_POOLS_SETUP 35 /* Frame mode only */
/* Available in both running and stopped mode */
#define GRTC_IOC_GET_CONFIG 64
#define GRTC_IOC_GET_BUF_PARAM 65
#define GRTC_IOC_GET_HW_STATUS 66
#define GRTC_IOC_ASSIGN_FRM_POOL 67
#define GRTC_IOC_GET_CLCW_ADR 68 /* Get address of CLCWRx1 */
#define GRTC_IOC_GET_STATS 69 /* Get statistics, note that most of the stats are only avilable in FRAME mode */
#define GRTC_IOC_CLR_STATS 70 /* Clear statistics */
/* Available only in RUNNING mode */
/* Args to GRTC_IOC_GET_BUF_PARAMS */
#define GRTC_BUF_MAXLEN (0x100*1024)
#define GRTC_BUF_MASK 0xfffffc00
struct grtc_ioc_buf_params {
unsigned int length; /* Length of new buffer in multiples of 1kbyte blocks */
void *custom_buffer; /* If set zero driver will allocate with malloc, set LSB to 1 to indicate remote address */
};
/* Args to GRTC_IOC_SET_BLOCKING_MODE */
enum {
GRTC_BLKMODE_POLL = 0, /* Never block (polling mode) */
GRTC_BLKMODE_BLK = 1, /* Block until at least 1 byte can be read */
GRTC_BLKMODE_COMPLETE = 2 /* Block until all data requested has be read */
};
/* Argument of GRTC_IOC_SET_CONFIG and GRTC_IOC_GET_CONFIG
* Pointer to:
*/
struct grtc_ioc_config {
int psr_enable;
int nrzm_enable;
int pss_enable;
int crc_calc; /* Enable Software CRC calculation (only Frame mode) */
};
/* Argument of GRTC_IOC_GET_HW_STATUS:
* Pointer to a grtc_ioc_hw_status structure that will be filled
* in by driver.
*/
struct grtc_ioc_hw_status {
unsigned int sir;
unsigned int far;
unsigned int clcw1;
unsigned int clcw2;
unsigned int phir;
unsigned int str;
};
struct grtc_hdr {
unsigned short flags_scid;
unsigned short vc_len;
unsigned char seqnum;
} __attribute__((packed));
/* Frame pool, all frames in pool have the same buffer length (frame mode only) */
struct grtc_frame {
struct grtc_frame *next; /* Next frame in list */
unsigned short len; /* Length of frame extracted */
unsigned short reserved; /* Reserved */
struct grtc_frame_pool *pool; /* The frame pool this frame belongs to */
/* The Frame content */
struct grtc_hdr hdr; /* Primary Header */
unsigned char data[3]; /* Frame payload */
} __attribute__((packed));
/* GRTC_IOC_RECV argument, single linked list of received frames */
struct grtc_list {
struct grtc_frame *head; /* First frame in list */
struct grtc_frame *tail; /* Last frame in list */
int cnt; /* Number of frames in list */
};
struct grtc_ioc_pools_setup {
unsigned int pool_cnt; /* Number of pools */
unsigned int pool_frame_len[1]; /* Array of 'pool_cnt' length: Frame length of frames in a pool
* Lengths must be sorted, starting with the smallest frame pool.
*/
};
struct grtc_ioc_assign_frm_pool {
unsigned int frame_len; /* The length of the pool to insert the frame into */
struct grtc_frame *frames; /* Frames to assign to a pool */
};
enum {
GRTC_MODE_RAW = 0,
GRTC_MODE_FRAME = 1
};
/* TC driver stats collected during receiving. The statistics is only available
* in FRAME mode. In RAW mode the user interprets the incoming frames and is
* therefore responsible for generating the staticstics.
*/
struct grtc_ioc_stats {
unsigned long long frames_recv; /* Total number of non-erroneous frames received */
/* Errors related to incoming data */
unsigned int err; /* total number of errors */
unsigned int err_hdr; /* number of errors in Header */
unsigned int err_payload; /* Number of errors in payload */
unsigned int err_ending; /* Number of errors in end (Filler, end marker) */
unsigned int err_abandoned; /* Number of abandoned frames, NOT IMPLEMENTED */
/* Errors related to the handling of incoming frames */
unsigned int dropped; /* Number of dropped frames TC driver */
unsigned int dropped_no_buf; /* Number of dropped frame caused by no buffers were available */
unsigned int dropped_too_long; /* Number of dropped frames that was larger than any buffer available for driver */
};
/* Register GRTC driver at driver manager */
void grtc_register_drv(void);
/* Register GRTC RMAP driver at driver manager */
void grtc_rmap_register_drv (void);
#ifdef __cplusplus
}
#endif
#endif /* __GRTC_H__ */
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