| Yauheni Kaliuta | 65e0b49 | 2010-04-16 16:13:35 +0300 | [diff] [blame] | 1 | /* |
| 2 | * USB CDC NCM auxiliary definitions |
| 3 | */ |
| 4 | |
| 5 | #ifndef __LINUX_USB_NCM_H |
| 6 | #define __LINUX_USB_NCM_H |
| 7 | |
| 8 | #include <linux/types.h> |
| 9 | #include <linux/usb/cdc.h> |
| 10 | #include <asm/unaligned.h> |
| 11 | |
| 12 | #define NCM_NTB_MIN_IN_SIZE 2048 |
| 13 | #define NCM_NTB_MIN_OUT_SIZE 2048 |
| 14 | |
| 15 | #define NCM_CONTROL_TIMEOUT (5 * 1000) |
| 16 | |
| 17 | /* bmNetworkCapabilities */ |
| 18 | |
| 19 | #define NCM_NCAP_ETH_FILTER (1 << 0) |
| 20 | #define NCM_NCAP_NET_ADDRESS (1 << 1) |
| 21 | #define NCM_NCAP_ENCAP_COMM (1 << 2) |
| 22 | #define NCM_NCAP_MAX_DGRAM (1 << 3) |
| 23 | #define NCM_NCAP_CRC_MODE (1 << 4) |
| 24 | |
| 25 | /* |
| 26 | * Here are options for NCM Datagram Pointer table (NDP) parser. |
| 27 | * There are 2 different formats: NDP16 and NDP32 in the spec (ch. 3), |
| 28 | * in NDP16 offsets and sizes fields are 1 16bit word wide, |
| 29 | * in NDP32 -- 2 16bit words wide. Also signatures are different. |
| 30 | * To make the parser code the same, put the differences in the structure, |
| 31 | * and switch pointers to the structures when the format is changed. |
| 32 | */ |
| 33 | |
| 34 | struct ndp_parser_opts { |
| 35 | u32 nth_sign; |
| 36 | u32 ndp_sign; |
| 37 | unsigned nth_size; |
| 38 | unsigned ndp_size; |
| 39 | unsigned ndplen_align; |
| 40 | /* sizes in u16 units */ |
| 41 | unsigned dgram_item_len; /* index or length */ |
| 42 | unsigned block_length; |
| 43 | unsigned fp_index; |
| 44 | unsigned reserved1; |
| 45 | unsigned reserved2; |
| 46 | unsigned next_fp_index; |
| 47 | }; |
| 48 | |
| 49 | #define INIT_NDP16_OPTS { \ |
| 50 | .nth_sign = NCM_NTH16_SIGN, \ |
| 51 | .ndp_sign = NCM_NDP16_NOCRC_SIGN, \ |
| 52 | .nth_size = sizeof(struct usb_cdc_ncm_nth16), \ |
| 53 | .ndp_size = sizeof(struct usb_cdc_ncm_ndp16), \ |
| 54 | .ndplen_align = 4, \ |
| 55 | .dgram_item_len = 1, \ |
| 56 | .block_length = 1, \ |
| 57 | .fp_index = 1, \ |
| 58 | .reserved1 = 0, \ |
| 59 | .reserved2 = 0, \ |
| 60 | .next_fp_index = 1, \ |
| 61 | } |
| 62 | |
| 63 | |
| 64 | #define INIT_NDP32_OPTS { \ |
| 65 | .nth_sign = NCM_NTH32_SIGN, \ |
| 66 | .ndp_sign = NCM_NDP32_NOCRC_SIGN, \ |
| 67 | .nth_size = sizeof(struct usb_cdc_ncm_nth32), \ |
| 68 | .ndp_size = sizeof(struct usb_cdc_ncm_ndp32), \ |
| 69 | .ndplen_align = 8, \ |
| 70 | .dgram_item_len = 2, \ |
| 71 | .block_length = 2, \ |
| 72 | .fp_index = 2, \ |
| 73 | .reserved1 = 1, \ |
| 74 | .reserved2 = 2, \ |
| 75 | .next_fp_index = 2, \ |
| 76 | } |
| 77 | |
| 78 | static inline void put_ncm(__le16 **p, unsigned size, unsigned val) |
| 79 | { |
| 80 | switch (size) { |
| 81 | case 1: |
| 82 | put_unaligned_le16((u16)val, *p); |
| 83 | break; |
| 84 | case 2: |
| 85 | put_unaligned_le32((u32)val, *p); |
| 86 | |
| 87 | break; |
| 88 | default: |
| 89 | BUG(); |
| 90 | } |
| 91 | |
| 92 | *p += size; |
| 93 | } |
| 94 | |
| 95 | static inline unsigned get_ncm(__le16 **p, unsigned size) |
| 96 | { |
| 97 | unsigned tmp; |
| 98 | |
| 99 | switch (size) { |
| 100 | case 1: |
| 101 | tmp = get_unaligned_le16(*p); |
| 102 | break; |
| 103 | case 2: |
| 104 | tmp = get_unaligned_le32(*p); |
| 105 | break; |
| 106 | default: |
| 107 | BUG(); |
| 108 | } |
| 109 | |
| 110 | *p += size; |
| 111 | return tmp; |
| 112 | } |
| 113 | |
| 114 | #endif /* __LINUX_USB_NCM_H */ |