projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 725e789f BH |
2 | #ifndef _HVSI_H |
| 3 | #define _HVSI_H | |
| 4 | ||
| 5 | #define VS_DATA_PACKET_HEADER 0xff | |
| 6 | #define VS_CONTROL_PACKET_HEADER 0xfe | |
| 7 | #define VS_QUERY_PACKET_HEADER 0xfd | |
| 8 | #define VS_QUERY_RESPONSE_PACKET_HEADER 0xfc | |
| 9 | ||
| 10 | /* control verbs */ | |
| 11 | #define VSV_SET_MODEM_CTL 1 /* to service processor only */ | |
| 12 | #define VSV_MODEM_CTL_UPDATE 2 /* from service processor only */ | |
| 13 | #define VSV_CLOSE_PROTOCOL 3 | |
| 14 | ||
| 15 | /* query verbs */ | |
| 16 | #define VSV_SEND_VERSION_NUMBER 1 | |
| 17 | #define VSV_SEND_MODEM_CTL_STATUS 2 | |
| 18 | ||
| 19 | /* yes, these masks are not consecutive. */ | |
| 20 | #define HVSI_TSDTR 0x01 | |
| 21 | #define HVSI_TSCD 0x20 | |
| 22 | ||
| 23 | #define HVSI_MAX_OUTGOING_DATA 12 | |
| 24 | #define HVSI_VERSION 1 | |
| 25 | ||
| 26 | struct hvsi_header { | |
| 27 | uint8_t type; | |
| 28 | uint8_t len; | |
| 99fc1d91 | 29 | __be16 seqno; |
| 725e789f BH |
30 | } __attribute__((packed)); |
| 31 | ||
| 32 | struct hvsi_data { | |
| 048bee77 | 33 | struct hvsi_header hdr; |
| 725e789f BH |
34 | uint8_t data[HVSI_MAX_OUTGOING_DATA]; |
| 35 | } __attribute__((packed)); | |
| 36 | ||
| 37 | struct hvsi_control { | |
| 048bee77 | 38 | struct hvsi_header hdr; |
| 99fc1d91 | 39 | __be16 verb; |
| 725e789f | 40 | /* optional depending on verb: */ |
| 99fc1d91 BH |
41 | __be32 word; |
| 42 | __be32 mask; | |
| 725e789f BH |
43 | } __attribute__((packed)); |
| 44 | ||
| 45 | struct hvsi_query { | |
| 048bee77 | 46 | struct hvsi_header hdr; |
| 99fc1d91 | 47 | __be16 verb; |
| 725e789f BH |
48 | } __attribute__((packed)); |
| 49 | ||
| 50 | struct hvsi_query_response { | |
| 048bee77 | 51 | struct hvsi_header hdr; |
| 99fc1d91 BH |
52 | __be16 verb; |
| 53 | __be16 query_seqno; | |
| 725e789f BH |
54 | union { |
| 55 | uint8_t version; | |
| 99fc1d91 | 56 | __be32 mctrl_word; |
| 725e789f BH |
57 | } u; |
| 58 | } __attribute__((packed)); | |
| 59 | ||
| 17bdc6c0 BH |
60 | /* hvsi lib struct definitions */ |
| 61 | #define HVSI_INBUF_SIZE 255 | |
| 62 | struct tty_struct; | |
| 63 | struct hvsi_priv { | |
| 64 | unsigned int inbuf_len; /* data in input buffer */ | |
| 65 | unsigned char inbuf[HVSI_INBUF_SIZE]; | |
| 66 | unsigned int inbuf_cur; /* Cursor in input buffer */ | |
| 67 | unsigned int inbuf_pktlen; /* packet lenght from cursor */ | |
| 68 | atomic_t seqno; /* packet sequence number */ | |
| 69 | unsigned int opened:1; /* driver opened */ | |
| 70 | unsigned int established:1; /* protocol established */ | |
| 71 | unsigned int is_console:1; /* used as a kernel console device */ | |
| 72 | unsigned int mctrl_update:1; /* modem control updated */ | |
| 73 | unsigned short mctrl; /* modem control */ | |
| 74 | struct tty_struct *tty; /* tty structure */ | |
| 75 | int (*get_chars)(uint32_t termno, char *buf, int count); | |
| 76 | int (*put_chars)(uint32_t termno, const char *buf, int count); | |
| 77 | uint32_t termno; | |
| 78 | }; | |
| 79 | ||
| 80 | /* hvsi lib functions */ | |
| 81 | struct hvc_struct; | |
| 87fa35dd BH |
82 | extern void hvsilib_init(struct hvsi_priv *pv, |
| 83 | int (*get_chars)(uint32_t termno, char *buf, int count), | |
| 84 | int (*put_chars)(uint32_t termno, const char *buf, | |
| 85 | int count), | |
| 86 | int termno, int is_console); | |
| 87 | extern int hvsilib_open(struct hvsi_priv *pv, struct hvc_struct *hp); | |
| 88 | extern void hvsilib_close(struct hvsi_priv *pv, struct hvc_struct *hp); | |
| 89 | extern int hvsilib_read_mctrl(struct hvsi_priv *pv); | |
| 90 | extern int hvsilib_write_mctrl(struct hvsi_priv *pv, int dtr); | |
| 91 | extern void hvsilib_establish(struct hvsi_priv *pv); | |
| 92 | extern int hvsilib_get_chars(struct hvsi_priv *pv, char *buf, int count); | |
| 93 | extern int hvsilib_put_chars(struct hvsi_priv *pv, const char *buf, int count); | |
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94 | |
| 95 | #endif /* _HVSI_H */ |