begriffs open source - cmsis-freertos/blob - Demo/ColdFire_MCF52233

1 /*

2 * File: fecbd.h

3 * Purpose:

4 *

5 * Purpose: Provide a simple buffer management driver

6 */

8 #ifndef _FECBD_H_

9 #define _FECBD_H_

11 /********************************************************************/

13 #define Rx 1

14 #define Tx 0

16 /*

17 * Buffer sizes in bytes

18 */

19 #ifndef RX_BUF_SZ

20 #define RX_BUF_SZ 1520 //2048

21 #endif

22 #ifndef TX_BUF_SZ

23 #define TX_BUF_SZ 1520

24 #endif

26 /*

27 * Buffer Descriptor Format

28 */

29 typedef struct

30 {

31 uint16 status; /* control and status */

32 uint16 length; /* transfer length */

33 uint8 *data; /* buffer address */

34 } FECBD;

36 /*

37 * Bit level definitions for status field of buffer descriptors

38 */

39 #define TX_BD_R 0x8000

40 #define TX_BD_TO1 0x4000

41 #define TX_BD_W 0x2000

42 #define TX_BD_TO2 0x1000

43 #define TX_BD_INTERRUPT 0x1000 /* MCF547x/8x Only */

44 #define TX_BD_L 0x0800

45 #define TX_BD_TC 0x0400

46 #define TX_BD_DEF 0x0200 /* MCF5272 Only */

47 #define TX_BD_ABC 0x0200

48 #define TX_BD_HB 0x0100 /* MCF5272 Only */

49 #define TX_BD_LC 0x0080 /* MCF5272 Only */

50 #define TX_BD_RL 0x0040 /* MCF5272 Only */

51 #define TX_BD_UN 0x0002 /* MCF5272 Only */

52 #define TX_BD_CSL 0x0001 /* MCF5272 Only */

54 #define RX_BD_E 0x8000

55 #define RX_BD_R01 0x4000

56 #define RX_BD_W 0x2000

57 #define RX_BD_R02 0x1000

58 #define RX_BD_INTERRUPT 0x1000 /* MCF547x/8x Only */

59 #define RX_BD_L 0x0800

60 #define RX_BD_M 0x0100

61 #define RX_BD_BC 0x0080

62 #define RX_BD_MC 0x0040

63 #define RX_BD_LG 0x0020

64 #define RX_BD_NO 0x0010

65 #define RX_BD_CR 0x0004

66 #define RX_BD_OV 0x0002

67 #define RX_BD_TR 0x0001

68 #define RX_BD_ERROR (RX_BD_NO | RX_BD_CR | RX_BD_OV | RX_BD_TR)

70 /*

71 * The following defines are provided by the MCF547x/8x

72 * DMA API. These are shown here to show their correlation

73 * to the other FEC buffer descriptor status bits

74 *

75 * #define MCD_FEC_BUF_READY 0x8000

76 * #define MCD_FEC_WRAP 0x2000

77 * #define MCD_FEC_INTERRUPT 0x1000

78 * #define MCD_FEC_END_FRAME 0x0800

79 */

81 /*

82 * Functions provided in fec_bd.c

83 */

84 int fecbd_init(int, int, int);

85 void fecbd_flush(int);

86 void fecbd_dump( void );

87 uint32 fecbd_get_start(int, int);

88 FECBD* fecbd_rx_alloc(int);

89 FECBD* fecbd_tx_alloc(int);

90 FECBD* fecbd_tx_free(int);

92 /*

93 * Error codes

94 */

95 #define ERR_MALLOC (-1)

96 #define ERR_NBUFALLOC (-2)

98 /*******************************************************************/

100 #endif /* _FECBD_H_ */