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在usb设备的hid path中寻找给定的节点（存在问题，以后再解决） (#67)
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@ -5,6 +5,73 @@
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#define HID_MAX_REPORT 300 // 最大允许的hid report数目（包括feature、input、output）
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#define HID_MAX_PATH_SIZE 16 // maximum depth for path
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// 这部分请参考hid_1_11.pdf Section 6.2.2.4
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#define HID_ITEM_COLLECTION 0xA0
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#define HID_ITEM_END_COLLECTION 0xC0
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#define HID_ITEM_FEATURE 0xB0
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#define HID_ITEM_INPUT 0x80
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#define HID_ITEM_OUTPUT 0x90
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/**
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* @brief 枚举hid的usage page列表。
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* 原始数据请见<HID Usage Tables FOR Universal Serial Bus (USB)>。
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* 该文件可从usb.org下载
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*/
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enum HID_USAGE_PAGE_TYPES
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{
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HID_USAGE_PAGE_GEN_DESKTOP = 0x1,
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HID_USAGE_PAGE_SIMU_CTRL, // simulation controls
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HID_USAGE_PAGE_VR_CTRL, // vr controls page
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HID_USAGE_PAGE_SPORT_CTRL, // sport controls
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HID_USAGE_PAGE_GAME_CTRL, // game controls
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HID_USAGE_PAGE_GEN_DEVICE_CTRL, // general device controls
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HID_USAGE_PAGE_KBD_KPD, // keyboard/ keypad page
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HID_USAGE_PAGE_LED, // LED
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HID_USAGE_PAGE_BUTTON, // button page
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HID_USAGE_PAGE_ORDINAL, // ordinal page
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HID_USAGE_PAGE_TEL_DEVICE, // telephony device
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HID_USAGE_PAGE_CONSUMER, // consumer page
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HID_USAGE_PAGE_DIGITIZER, // digitizers page
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HID_USAGE_PAGE_HAPTICS, // haptics page
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HID_USAGE_PAGE_PHY_INPUT_DEVICE, // physical input device page
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HID_USAGE_PAGE_UNICODE = 0x10, // unicode page
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HID_USAGE_PAGE_EYE_HEAD_TRACKER = 0x12, // eye and head trackers page
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HID_USAGE_PAGE_AUX_DISPLAY = 0x14, // auxiliary display page
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HID_USAGE_PAGE_SENSORS = 0x20, // sensors page
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HID_USAGE_PAGE_MEDICAL = 0x40, // medical instruments
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HID_USAGE_PAGE_BRAILLE_DISPLAY, // barille display
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HID_USAGE_PAGE_LIGHTNING_ILLU = 0x59, // lighting and illumination page
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HID_USAGE_PAGE_MONITOR = 0x80, // monitor page
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HID_USAGE_PAGE_MONITOR_ENUMERATED, // monitor enumerated page
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HID_USAGE_PAGE_VESA_VIRT_CTRL, // VESA virtual controls page
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HID_USAGE_PAGE_POWER = 0x84, // power page
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HID_USAGE_PAGE_BATTERY_SYSTEM, // battery system page
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HID_USAGE_PAGE_BARCODE_SCANNER = 0x8c, // barcode scanner page
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HID_USAGE_PAGE_SCALES, // scales page
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HID_USAGE_PAGE_MAGNET_STRIPE_READER, // magnetic stript reader page
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HID_USAGE_PAGE_CAMERA_CONTROL = 0x90, // camera control page
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HID_USAGE_PAGE_ARCADE, // arcade page
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HID_USAGE_PAGE_GAMING_DEVICE, // gaming device page
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HID_USAGE_PAGE_FIDO_ALLIANCE = 0xf1d0, // FIDO alliance page
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};
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/**
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* @brief usage type for HID_USAGE_PAGE_GEN_DESKTOP page
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*
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*/
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enum USAGE_TYPE_GENDESK
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{
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HID_USAGE_GENDESK_UNDEF = 0, // undefined
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HID_USAGE_GENDESK_POINTER,
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HID_USAGE_GENDESK_MOUSE,
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HID_USAGE_GENDESK_KEYBOARD = 0x6,
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HID_USAGE_GENDESK_POINTER_X = 0x30,
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HID_USAGE_GENDESK_POINTER_Y,
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HID_USAGE_GENDESK_WHEEL = 0x38,
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HID_USAGE_GENDESK_NOTHING = 0xff,
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};
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/**
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* @brief 描述hid path中的一个节点
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*
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@ -79,10 +146,8 @@ struct hid_parser
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int cnt_objects; // report descriptor中的对象数目
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int cnt_report; // report desc中的report数目
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};
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struct hid_usage_types_string
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{
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int value;
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@ -92,8 +157,10 @@ struct hid_usage_types_string
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struct hid_usage_pages_string
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{
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int value;
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struct hid_usage_types_string * types;
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const char * string;
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struct hid_usage_types_string *types;
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const char *string;
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};
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int hid_parse_report(const void *report_data, const int len);
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bool hid_parse_find_object(const void *hid_report, const int report_size, struct hid_data_t *data);
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@ -44,21 +44,13 @@ static __always_inline const struct hid_usage_types_string *hid_get_usage_type(
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#define HID_ITEM_REP_ID 0x84
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#define HID_ITEM_REP_COUNT 0x94
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// 这部分请参考hid_1_11.pdf Section 6.2.2.4
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#define HID_ITEM_COLLECTION 0xA0
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#define HID_ITEM_END_COLLECTION 0xC0
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#define HID_ITEM_FEATURE 0xB0
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#define HID_ITEM_INPUT 0x80
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#define HID_ITEM_OUTPUT 0x90
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static char __spaces_buf[33];
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char *__spaces(uint8_t cnt)
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{
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static char __space_overflow_str[] = "**";
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if (cnt > 32)
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{
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return &__space_overflow_str;
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return __space_overflow_str;
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}
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memset(__spaces_buf, ' ', 32);
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@ -111,6 +103,7 @@ static __always_inline void __pop_usage_stack(struct hid_parser *parser)
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/**
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* @brief 解析hid report，并获取下一个数据到data字段中
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* todo:(不知道为什么，在qemu上面，发现键盘的usage都是0xff)
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*
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* @param parser 解析器
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* @param data 返回的数据
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@ -345,7 +338,7 @@ static bool hid_parse(struct hid_parser *parser, struct hid_data_t *data)
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break;
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default:
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printk("\n Found unknown item %#02X\n", parser->item & HID_ITEM_MASK);
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return false;
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return found;
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}
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}
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return found;
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@ -509,7 +502,7 @@ static int *__get_report_offset(struct hid_parser *parser, const uint8_t report_
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while ((pos < HID_MAX_REPORT) && (parser->offset_table[pos][0] != 0)) // 当offset的id不为0时
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{
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if ((parser->offset_table[pos][0] == report_id) && (parser->offset_table[pos][1] == report_type))
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return &parser->offset_table[2];
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return &parser->offset_table[pos][2];
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++pos;
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}
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// 在offset table中占用一个新的表项来存储这个report的offset
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@ -524,3 +517,67 @@ static int *__get_report_offset(struct hid_parser *parser, const uint8_t report_
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// 当offset table满了，且未找到结果的时候，返回NULL
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return NULL;
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}
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static __always_inline bool __find_object(struct hid_parser *parser, struct hid_data_t *data)
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{
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kdebug("target_type=%d report_id=%d, offset=%d, size=%d", data->type, data->report_id, data->offset, data->size);
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struct hid_data_t found_data = {0};
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while (hid_parse(parser, &found_data))
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{
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kdebug("size=%d, type=%d, report_id=%d, u_page=%d, usage=%d", found_data.size, found_data.type,
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found_data.report_id, found_data.path.node[0].u_page, found_data.path.node[0].usage);
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// 按照路径完整匹配data
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if ((data->path.size > 0) && (found_data.type == data->type) &&
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(memcmp(found_data.path.node, data->path.node, data->path.size * sizeof(struct hid_node_t)) == 0))
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{
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goto found;
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}
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// 通过report id以及offset匹配成功
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else if ((found_data.report_id == data->report_id) && (found_data.type == data->type) &&
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(found_data.offset == data->offset))
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{
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goto found;
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}
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}
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return false;
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found:;
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memcpy(data, &found_data, sizeof(struct hid_data_t));
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data->report_count = parser->report_count;
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return true;
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}
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/**
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* @brief 在hid report中寻找参数data给定的节点数据，并将结果写入到data中
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*
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* @param hid_report hid report 数据
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* @param report_size report_data的大小（字节）
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* @param data 要寻找的节点数据。
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* @return true 找到指定的节点
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* @return false 未找到指定的节点
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*/
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bool hid_parse_find_object(const void *hid_report, const int report_size, struct hid_data_t *data)
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{
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struct hid_parser parser = {0};
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hid_reset_parser(&parser);
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parser.report_desc = hid_report;
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parser.report_desc_size = report_size;
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// HID_PARSE_OUTPUT = false;
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printk("\nFinding Coordinate value:");
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if (__find_object(&parser, data))
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{
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printk(" size: %i (in bits)\n"
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" offset: %i (in bits)\n"
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" min: %i\n"
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" max: %i\n"
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" attrib: 0x%02X (input, output, or feature, etc.)\n",
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data->size, data->offset, data->logical_min, data->logical_max, data->attribute);
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return true;
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}
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else
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{
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printk(" Did not find Coordinate value.\n");
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return false;
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}
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}
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@ -1863,9 +1863,20 @@ static int xhci_configure_port(const int id, const int port_id)
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}
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kdebug("to parse hid report");
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// todo: parse hid report
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hid_parse_report(hid_report_data, hid_desc->report_desc_len);
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// todo:这里的parse有问题，详见hid_parse函数的注释
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// hid_parse_report(hid_report_data, hid_desc->report_desc_len);
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kdebug("parse hid report done");
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// kdebug("to find object from hid path");
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// struct hid_data_t data = {0};
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// data.type = HID_ITEM_INPUT;
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// data.path.node[0].u_page = HID_USAGE_PAGE_GEN_DESKTOP;
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// data.path.node[0].usage = 0xff;
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// data.path.node[2].usage = USAGE_POINTER_Y; // to get the Y Coordinate, comment X above and uncomment this
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// line data.path.node[2].usage = USAGE_POINTER_WHEEL; // to get the Wheel Coordinate, comment X above and
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// uncomment this line
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// data.path.size = 1;
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// hid_parse_find_object(hid_report_data, hid_desc->report_desc_len, &data);
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kfree(hid_report_data);
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}
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goto out;
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