drivers/misc/mediatek/eemcs/eemcs_char.h

   1 #ifndef _EEMCS_CHAR_H
   2 #define _EEMCS_CHAR_H
   3 #include <asm/ioctl.h>
   4 #include <asm/atomic.h>
   5 #include <linux/skbuff.h>
   6 #include <linux/wait.h>
   7 #include "eemcs_ccci.h"
   8 #include "eemcs_kal.h"
   9
  10 #define EEMCS_DEV_MAJOR 183
  11 #define EEMCS_DEV_NAME "eemcs"
  12 #define EEMCS_CDEV_MAX_NUM (END_OF_NORMAL_PORT-START_OF_NORMAL_PORT)
  13 #define EEMCS_DEV_NAME_LEN  30
  14
  15 typedef enum _CCCI_CDEV_STATE{
  16     CDEV_CLOSE = 0,
  17     CDEV_OPEN  = 1
  18 }CCCI_CDEV_STATE;
  19
  20 typedef struct
  21 {
  22     struct sk_buff      *remaining_rx_skb; /* the pointer for streaming read */
  23     atomic_t            remaining_rx_cnt;
  24     KAL_UINT32          remaining_len;
  25 }stream_buff_t;
  26
  27 typedef struct
  28 {
  29     KAL_CHAR            cdev_name[32];
  30     KAL_UINT8           eemcs_port_id;
  31     ccci_ch_set         ccci_ch;
  32     atomic_t            cdev_state;  /*0: close 1:open*/
  33     /* rx informaiont */
  34     /* 1. [eemcs_cdev_rx_callback] enqueue rx_skb_list
  35      * 2. [eemcs_cdev_rx_callback] rx_pkt_cnt ++
  36      * 3. [eemcs_cdev_rx_callback] wake_up rx_waitq
  37      * 4. [emcs_cdev_read]         (wait_event_interruptible rx_waitq)
  38      * 5. [emcs_cdev_read]         rx_pkt_cnt --
  39      * 6. [emcs_cdev_read]         dequeue rx_skb_list
  40      */
  41     wait_queue_head_t   rx_waitq;
  42     struct sk_buff_head rx_skb_list;
  43     atomic_t            rx_pkt_cnt;
  44     atomic_t            rx_pkt_drop_cnt; /* happen when user memory is not enough */
  45     stream_buff_t       buff;
  46     /* tx informaiont */
  47     wait_queue_head_t   tx_waitq;
  48     atomic_t            tx_pkt_cnt;
  49 }eemcs_cdev_node_t;
  50
  51 typedef struct
  52 {
  53     struct class        *dev_class;        /* class_create/class_destroy/device_create/device_destroy */
  54     struct cdev         *eemcs_chrdev;     /* cdev_alloc/cdev_del/cdev_init/cdev_add */
  55     eemcs_cdev_node_t   cdev_node[EEMCS_CDEV_MAX_NUM];
  56     KAL_UINT32          expt_cb_id;        /* exception callback function ID */
  57 }eemcs_cdev_inst_t;
  58
  59
  60
  61 /* EMCS opeartion Error. */
  62 //  I for Internal use, O for device status, should cover by error handling..
  63 #define EMCS_ERR_NONE           0
  64 #define EMCS_ERR_TIMEOUT        20 /*[O] wait Interrupt or device read fail*/
  65 #define EMCS_ERR_BT_STATUS      21 /*[I] invalid MD Status.*/
  66 #define EMCS_ERR_CMDCRC         22 /*[O] invalid command*/
  67 #define EMCS_ERR_LOAD_BIN       23 /*[O] MD BIN file open fail*/
  68 #define EMCS_ERR_MSG_OVERFLOW   24 /*[O] receive message to long*/
  69 #define EMCS_ERR_PKT_OVERFLOW   25 /*[I] send package big the tx limitaion*/
  70 #define EMCS_ERR_INVALID_PARA   26 /*[I] emcs driver parameter check fail*/
  71 #define EMCS_ERR_GET_OWNER      27 /*[O] get device ownership fail*/
  72 #define EMCS_ERR_NOMEM          28
  73 #define EMCS_ERR_NOINIT         29
  74 #define EMCS_ERR_INVAL_PARA     30
  75 #define EMCS_ERR_TX_FAIL        31
  76 #define EMCS_ERR_RX_FAIL        32
  77 #define EMCS_ERROR_BUSY         33
  78 #define EMCS_ERROR_NODEV        34
  79 #define EMCS_ERR_RESET_MD       35
  80
  81 #if defined(_EEMCS_CDEV_LB_UT_) || defined(_EEMCS_FS_UT)
  82 KAL_UINT32 cdevut_register_callback(CCCI_CHANNEL_T chn, EEMCS_CCCI_CALLBACK func_ptr , KAL_UINT32 private_data) ;
  83 KAL_UINT32 cdevut_unregister_callback(CCCI_CHANNEL_T chn);
  84 inline KAL_INT32 cdevut_UL_write_skb_to_swq(CCCI_CHANNEL_T chn, struct sk_buff *skb);
  85 inline KAL_UINT32 cdevut_UL_write_room_alloc(CCCI_CHANNEL_T chn);
  86 inline KAL_UINT32 cdevut_UL_write_room_release(CCCI_CHANNEL_T chn);
  87 KAL_UINT32 cdevut_UL_write_wait(CCCI_CHANNEL_T chn);
  88 typedef void (*EEMCS_CCCI_EXCEPTION_IND_CALLBACK)(KAL_UINT32 msg_id);
  89 KAL_UINT32 cdevut_register_expt_callback(EEMCS_CCCI_EXCEPTION_IND_CALLBACK func_ptr);
  90 KAL_UINT32 cdevut_unregister_expt_callback(KAL_UINT32 cb_id);
  91 void cdevut_turn_off_dlq_by_port(KAL_UINT32 port_idx);
  92 void cdevut_turn_on_dlq_by_port(KAL_UINT32 port_idx);
  93
  94 #define ccci_cdev_register(ch_num,cb,para)           cdevut_register_callback(ch_num,cb,para)
  95 #define ccci_cdev_unregister(ch_num)                         cdevut_unregister_callback(ch_num)
  96 #define ccci_cdev_write_desc_to_q(ch_num,desc_p)     cdevut_UL_write_skb_to_swq(ch_num, desc_p)
  97 #define ccci_cdev_write_space_alloc(ch_num)          cdevut_UL_write_room_alloc(ch_num)
  98 #define ccci_cdev_write_space_release(ch_num)        cdevut_UL_write_room_release(ch_num)
  99 #define ccci_cdev_write_wait(ch_num)                 cdevut_UL_write_wait(ch_num)
 100 #define ccci_cdev_register_expt_callback(cb)         cdevut_register_expt_callback(cb)
 101 #define ccci_cdev_unregister_expt_callback(cb)       cdevut_unregister_expt_callback(cb)
 102 #define ccci_cdev_turn_off_dl_q(port_idx)            cdevut_turn_off_dlq_by_port(port_idx)
 103 #define ccci_cdev_turn_on_dl_q(port_idx)             cdevut_turn_on_dlq_by_port(port_idx)
 104
 105 #else
 106 #define ccci_cdev_register(ch_num,cb,para)           eemcs_ccci_register_callback(ch_num,cb,para)
 107 #define ccci_cdev_unregister(ch_num)                         eemcs_ccci_unregister_callback(ch_num)
 108 #define ccci_cdev_write_desc_to_q(ch_num,desc_p)     eemcs_ccci_UL_write_skb_to_swq(ch_num, desc_p)
 109 #define ccci_cdev_write_space_alloc(ch_num)          eemcs_ccci_UL_write_room_alloc(ch_num)
 110 #define ccci_cdev_write_space_release(ch_num)        eemcs_ccci_UL_write_room_release(ch_num)
 111 #define ccci_cdev_write_wait(ch_num)                 eemcs_ccci_UL_write_wait(ch_num)
 112 #define ccci_cdev_register_expt_callback(cb)         eemcs_register_expt_callback(cb)
 113 #define ccci_cdev_unregister_expt_callback(cb)       eemcs_unregister_expt_callback(cb)
 114 #define ccci_cdev_turn_off_dl_q(port_idx)            eemcs_ccci_turn_off_dlq_by_port(port_idx)
 115 #define ccci_cdev_turn_on_dl_q(port_idx)             eemcs_ccci_turn_on_dlq_by_port(port_idx)
 116 #endif
 117
 118 #ifdef CCCI_SDIO_HEAD
 119 #define CCCI_CDEV_HEADER_ROOM                   (sizeof(SDIO_H)+sizeof(CCCI_BUFF_T))
 120 #else
 121 #define CCCI_CDEV_HEADER_ROOM                   (sizeof(CCCI_BUFF_T))
 122 #endif
 123
 124 //#define ccci_cdev_mem_alloc(sz)                 dev_alloc_skb(sz)
 125 #define ccci_cdev_mem_alloc(sz, flag)            __dev_alloc_skb(sz, flag)
 126
 127 KAL_INT32 eemcs_char_mod_init(void);
 128 void eemcs_char_exit(void);
 129
 130 void eemcs_fs_ut_callback(struct sk_buff *, KAL_UINT32);
 131 bool eemcs_cdev_rst_port_closed(void);
 132 void eemcs_cdev_reset(void);
 133
 134 #endif //_EEMCS_CHAR_H
 135
 136 /*********************************************************************
 137 [SOP to add a char device node] 20130525 Ian
 138 [EEMCS] mediatek/kernel/source/kernel/driver/eemcs
 139 1. add channel in eemcs_ccci.h CCCI_CHANNEL_T
 140 2. add port in eemcs_ccci.h CCCI_PORT
 141 3. update ccci_port_info in eemcs_ccci.c
 142 4. update ccci_cdev_name in eemcs_char.c
 143 5. update exception port information ccci_expt_port_info in eemcs_expt.c
 144 [eemcs_test] mediatek/source/external/eemcs_test
 145 1. add channel in CCCI_CHANNEL_T
 146 2. add port in CCCI_PORT
 147 3. CCCI_CDEV_NUM++
 148 4. update ccci_cdev_name, ccci_cdev_name_select, ccci_expose_cccih
 149 5. modify port_to_tx_cccich function
 150 *********************************************************************/