[6319] | 1 | /** @file wlan_mac_high.c |
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| 2 | * @brief Top-level WLAN MAC High Framework |
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| 3 | * |
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| 4 | * This contains the top-level code for accessing the WLAN MAC High Framework. |
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| 5 | * |
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| 6 | * @copyright Copyright 2014-2019, Mango Communications. All rights reserved. |
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| 7 | * Distributed under the Mango Communications Reference Design License |
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| 8 | * See LICENSE.txt included in the design archive or |
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| 9 | * at http://mangocomm.com/802.11/license |
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| 10 | * |
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| 11 | * This file is part of the Mango 802.11 Reference Design (https://mangocomm.com/802.11) |
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| 12 | */ |
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| 13 | |
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| 14 | /***************************** Include Files *********************************/ |
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| 15 | #include "wlan_mac_high_sw_config.h" |
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| 16 | |
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| 17 | // Xilinx Includes |
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| 18 | #include "stdlib.h" |
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| 19 | #include "malloc.h" |
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| 20 | #include "xil_exception.h" |
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| 21 | #include "xaxicdma.h" |
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| 22 | |
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| 23 | // WLAN Includes |
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| 24 | #include "wlan_mac_common.h" |
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| 25 | #include "wlan_platform_common.h" |
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| 26 | #include "wlan_platform_high.h" |
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| 27 | #include "wlan_mac_dl_list.h" |
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| 28 | #include "wlan_mac_mailbox_util.h" |
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| 29 | #include "wlan_mac_pkt_buf_util.h" |
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| 30 | #include "wlan_mac_802_11_defs.h" |
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| 31 | #include "wlan_mac_high.h" |
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| 32 | #include "wlan_mac_packet_types.h" |
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| 33 | #include "wlan_mac_queue.h" |
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| 34 | #include "wlan_mac_eth_util.h" |
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| 35 | #include "wlan_mac_ltg.h" |
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| 36 | #include "wlan_mac_entries.h" |
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| 37 | #include "wlan_mac_event_log.h" |
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| 38 | #include "wlan_mac_schedule.h" |
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| 39 | #include "wlan_mac_addr_filter.h" |
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| 40 | #include "wlan_mac_network_info.h" |
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| 41 | #include "wlan_mac_station_info.h" |
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| 42 | #include "wlan_exp_common.h" |
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| 43 | #include "wlan_exp_node.h" |
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| 44 | #include "wlan_exp_transport.h" |
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| 45 | #include "wlan_mac_scan.h" |
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| 46 | #include "wlan_mac_high_mailbox_util.h" |
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| 47 | |
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| 48 | /*********************** Global Variable Definitions *************************/ |
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| 49 | |
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| 50 | // Constants |
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| 51 | const u8 bcast_addr[MAC_ADDR_LEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
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| 52 | const u8 zero_addr[MAC_ADDR_LEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
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| 53 | |
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| 54 | // HW structures |
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| 55 | platform_high_dev_info_t platform_high_dev_info; |
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| 56 | platform_common_dev_info_t platform_common_dev_info; |
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| 57 | wlan_mac_hw_info_t wlan_mac_hw_info; |
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| 58 | |
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| 59 | XAxiCdma cdma_inst; ///< Central DMA instance |
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| 60 | |
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| 61 | // Callback function pointers |
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| 62 | volatile function_ptr_t press_pb_0_callback; ///< User callback for pressing pushbutton 0 |
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| 63 | volatile function_ptr_t release_pb_0_callback; ///< User callback for releasing pushbutton 0 |
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| 64 | volatile function_ptr_t press_pb_1_callback; ///< User callback for pressing pushbutton 1 |
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| 65 | volatile function_ptr_t release_pb_1_callback; ///< User callback for releasing pushbutton 1 |
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| 66 | volatile function_ptr_t press_pb_2_callback; ///< User callback for pressing pushbutton 2 |
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| 67 | volatile function_ptr_t release_pb_2_callback; ///< User callback for releasing pushbutton 2 |
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| 68 | |
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| 69 | volatile function_ptr_t uart_callback; ///< User callback for UART reception |
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| 70 | volatile function_ptr_t mpdu_tx_high_done_callback; ///< User callback for lower-level message that MPDU transmission is complete |
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| 71 | volatile function_ptr_t mpdu_tx_low_done_callback; ///< User callback for lower-level message that MPDU transmission is complete |
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| 72 | volatile function_ptr_t mpdu_rx_callback; ///< User callback for lower-level message that MPDU reception is ready for processing |
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| 73 | volatile function_ptr_t tx_poll_callback; ///< User callback when higher-level framework is ready to send a packet to low |
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| 74 | volatile function_ptr_t beacon_tx_done_callback; ///< User callback for low-level message that a Beacon transmission is complete |
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| 75 | volatile function_ptr_t mpdu_tx_dequeue_callback; ///< User callback for higher-level framework dequeuing a packet |
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| 76 | volatile function_ptr_t cpu_low_reboot_callback; ///< User callback for CPU_LOW boot |
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| 77 | volatile function_ptr_t tx_queue_state_change_callback; ///< User callback for Tx queue state changes |
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| 78 | |
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| 79 | // CPU_LOW parameters that MAC High Framework tracks and is responsible for re-applying |
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| 80 | // in the event of a CPU_LOW reboot. |
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| 81 | volatile u32 low_param_channel; |
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| 82 | volatile u32 low_param_dsss_en; |
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| 83 | volatile u8 low_param_rx_ant_mode; |
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| 84 | volatile s8 low_param_tx_ctrl_pow; |
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| 85 | volatile s8 low_param_radio_tx_pow; |
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| 86 | volatile u32 low_param_rx_filter; |
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| 87 | volatile u32 low_param_random_seed; |
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| 88 | |
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| 89 | // Node information |
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| 90 | volatile u8 dram_present; ///< Indication variable for whether DRAM SODIMM is present on this hardware |
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| 91 | |
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| 92 | // Status information |
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| 93 | wlan_mac_hw_info_t* hw_info; |
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| 94 | static volatile u32 cpu_low_status; ///< Tracking variable for lower-level CPU status |
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| 95 | |
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| 96 | // CPU Low Register Read Buffer |
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| 97 | static volatile u32* cpu_low_reg_read_buffer; |
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| 98 | static volatile u8 cpu_low_reg_read_buffer_status; |
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| 99 | |
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| 100 | #define CPU_LOW_REG_READ_BUFFER_STATUS_READY 1 |
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| 101 | #define CPU_LOW_REG_READ_BUFFER_STATUS_NOT_READY 0 |
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| 102 | |
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| 103 | // Memory Allocation Debugging |
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| 104 | static volatile u32 num_malloc; ///< Tracking variable for number of times malloc has been called |
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| 105 | static volatile u32 num_free; ///< Tracking variable for number of times free has been called |
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| 106 | static volatile u32 num_realloc; ///< Tracking variable for number of times realloc has been called |
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| 107 | |
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| 108 | /******************************** Functions **********************************/ |
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| 109 | |
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| 110 | /** |
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| 111 | * @brief Initialize MAC High Framework |
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| 112 | * |
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| 113 | * This function initializes the MAC High Framework by setting |
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| 114 | * up the hardware and other subsystems in the framework. |
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| 115 | * |
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| 116 | * @param None |
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| 117 | * @return None |
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| 118 | */ |
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| 119 | void wlan_mac_high_init(){ |
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| 120 | int Status; |
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| 121 | u32 i; |
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| 122 | tx_frame_info_t* tx_frame_info; |
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| 123 | rx_frame_info_t* rx_frame_info; |
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| 124 | #if WLAN_SW_CONFIG_ENABLE_LOGGING |
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| 125 | u32 log_size; |
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| 126 | #endif //WLAN_SW_CONFIG_ENABLE_LOGGING |
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| 127 | XAxiCdma_Config* cdma_cfg_ptr; |
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| 128 | |
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| 129 | platform_high_dev_info = wlan_platform_high_get_dev_info(); |
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| 130 | platform_common_dev_info = wlan_platform_common_get_dev_info(); |
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| 131 | wlan_mac_hw_info = wlan_platform_get_hw_info(); |
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| 132 | |
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| 133 | // Check that right shift works correctly |
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| 134 | // Issue with -Os in Xilinx SDK 14.7 |
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| 135 | if (wlan_mac_high_right_shift_test() != 0) { |
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| 136 | wlan_platform_high_userio_disp_status(USERIO_DISP_STATUS_CPU_ERROR, WLAN_ERROR_CODE_RIGHT_SHIFT); |
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| 137 | } |
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| 138 | |
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| 139 | // Sanity check memory map of aux. BRAM and DRAM |
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| 140 | //Aux. BRAM Check |
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| 141 | Status = (TX_QUEUE_DL_ENTRY_MEM_HIGH < BSS_INFO_DL_ENTRY_MEM_BASE) && |
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| 142 | (BSS_INFO_DL_ENTRY_MEM_HIGH < STATION_INFO_DL_ENTRY_MEM_BASE ) && |
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| 143 | (STATION_INFO_DL_ENTRY_MEM_HIGH <= CALC_MEM_HIGH_ADDR(platform_high_dev_info.aux_bram_baseaddr, platform_high_dev_info.aux_bram_size)); |
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| 144 | |
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| 145 | if(Status != 1){ |
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| 146 | xil_printf("Error: Overlap detected in Aux. BRAM. Check address assignments\n"); |
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| 147 | } |
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| 148 | |
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| 149 | //DRAM Check |
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| 150 | Status = (TX_QUEUE_BUFFER_HIGH < BSS_INFO_BUFFER_BASE) && |
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| 151 | (BSS_INFO_BUFFER_HIGH < STATION_INFO_BUFFER_BASE) && |
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| 152 | (STATION_INFO_BUFFER_HIGH < USER_SCRATCH_BASE) && |
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| 153 | (USER_SCRATCH_HIGH < EVENT_LOG_BASE) && |
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| 154 | (EVENT_LOG_HIGH <= CALC_MEM_HIGH_ADDR(platform_high_dev_info.dram_baseaddr, platform_high_dev_info.dram_size)); |
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| 155 | |
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| 156 | if(Status != 1){ |
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| 157 | xil_printf("Error: Overlap detected in DRAM. Check address assignments\n"); |
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| 158 | } |
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| 159 | |
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| 160 | // *************************************************** |
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| 161 | // Initialize libraries |
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| 162 | // *************************************************** |
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| 163 | |
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| 164 | // Initialize mailbox |
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| 165 | wlan_mac_high_init_mailbox(); |
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| 166 | |
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| 167 | // Initialize packet buffers |
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| 168 | init_pkt_buf(); |
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| 169 | |
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| 170 | // Initialize the HW info structure |
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| 171 | init_mac_hw_info(); |
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| 172 | |
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| 173 | hw_info = get_mac_hw_info(); |
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| 174 | |
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| 175 | xil_printf("------------------------\n"); |
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| 176 | xil_printf("Initializing MAC High Framework...\n"); |
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| 177 | xil_printf(" WLAN MAC Address: %02x:%02x:%02x:%02x:%02x:%02x\n", hw_info->hw_addr_wlan[0], hw_info->hw_addr_wlan[1], hw_info->hw_addr_wlan[2], |
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| 178 | hw_info->hw_addr_wlan[3], hw_info->hw_addr_wlan[4], hw_info->hw_addr_wlan[5]); |
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| 179 | xil_printf(" Serial Number: %s-%05d\n", hw_info->serial_number_prefix, hw_info->serial_number); |
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| 180 | |
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| 181 | // *************************************************** |
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| 182 | // Initialize callbacks and global state variables |
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| 183 | // *************************************************** |
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| 184 | press_pb_0_callback = (function_ptr_t)wlan_null_callback; |
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| 185 | release_pb_0_callback = (function_ptr_t)wlan_null_callback; |
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| 186 | press_pb_1_callback = (function_ptr_t)wlan_null_callback; |
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| 187 | release_pb_1_callback = (function_ptr_t)wlan_null_callback; |
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| 188 | press_pb_2_callback = (function_ptr_t)wlan_null_callback; |
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| 189 | release_pb_2_callback = (function_ptr_t)wlan_null_callback; |
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| 190 | uart_callback = (function_ptr_t)wlan_null_callback; |
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| 191 | mpdu_rx_callback = (function_ptr_t)wlan_null_callback; |
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| 192 | mpdu_tx_high_done_callback = (function_ptr_t)wlan_null_callback; |
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| 193 | mpdu_tx_low_done_callback = (function_ptr_t)wlan_null_callback; |
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| 194 | beacon_tx_done_callback = (function_ptr_t)wlan_null_callback; |
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| 195 | tx_poll_callback = (function_ptr_t)wlan_null_callback; |
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| 196 | mpdu_tx_dequeue_callback = (function_ptr_t)wlan_null_callback; |
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| 197 | cpu_low_reboot_callback = (function_ptr_t)wlan_null_callback; |
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| 198 | tx_queue_state_change_callback = (function_ptr_t)wlan_null_callback; |
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| 199 | |
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| 200 | num_malloc = 0; |
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| 201 | num_realloc = 0; |
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| 202 | num_free = 0; |
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| 203 | |
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| 204 | low_param_channel = 0xFFFFFFFF; |
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| 205 | low_param_dsss_en = 0xFFFFFFFF; |
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| 206 | low_param_rx_ant_mode = 0xFF; |
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| 207 | low_param_tx_ctrl_pow = -127; |
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| 208 | low_param_radio_tx_pow = -127; |
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| 209 | low_param_rx_filter = 0xFFFFFFFF; |
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| 210 | low_param_random_seed = 0xFFFFFFFF; |
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| 211 | |
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| 212 | cpu_low_reg_read_buffer = NULL; |
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| 213 | |
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| 214 | // *************************************************** |
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| 215 | // Initialize Transmit Packet Buffers |
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| 216 | // *************************************************** |
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| 217 | for(i = 0; i < NUM_TX_PKT_BUFS; i++){ |
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| 218 | tx_frame_info = (tx_frame_info_t*)CALC_PKT_BUF_ADDR(platform_common_dev_info.tx_pkt_buf_baseaddr, i); |
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| 219 | switch(i){ |
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| 220 | case TX_PKT_BUF_MPDU_1: |
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| 221 | case TX_PKT_BUF_MPDU_2: |
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| 222 | case TX_PKT_BUF_MPDU_3: |
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| 223 | case TX_PKT_BUF_MPDU_4: |
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| 224 | case TX_PKT_BUF_MPDU_5: |
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| 225 | case TX_PKT_BUF_MPDU_6: |
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| 226 | switch(tx_frame_info->tx_pkt_buf_state){ |
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| 227 | case TX_PKT_BUF_UNINITIALIZED: |
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| 228 | case TX_PKT_BUF_HIGH_CTRL: |
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| 229 | // Buffer already clean on boot or reboot |
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| 230 | case TX_PKT_BUF_DONE: |
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| 231 | // CPU High rebooted while CPU Low finished old Tx |
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| 232 | // Ignore the packet buffer contents and clean up |
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| 233 | default: |
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| 234 | // Something went wrong if tx_pkt_buf_state is something |
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| 235 | // other than one of the tx_pkt_buf_state_t enums. We'll |
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| 236 | // attempt to resolve the problem by explicitly setting |
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| 237 | // the state. |
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| 238 | force_lock_tx_pkt_buf(i); |
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| 239 | tx_frame_info->tx_pkt_buf_state = TX_PKT_BUF_HIGH_CTRL; |
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| 240 | break; |
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| 241 | case TX_PKT_BUF_READY: |
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| 242 | case TX_PKT_BUF_LOW_CTRL: |
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| 243 | // CPU High rebooted after submitting packet for transmission |
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| 244 | // Will be handled by CPU Low, either because CPU Low is about |
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| 245 | // to transmit or just rebooted and will clean up |
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| 246 | break; |
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| 247 | } |
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| 248 | break; |
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| 249 | case TX_PKT_BUF_BEACON: |
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| 250 | unlock_tx_pkt_buf(TX_PKT_BUF_BEACON); |
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| 251 | tx_frame_info->tx_pkt_buf_state = TX_PKT_BUF_HIGH_CTRL; |
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| 252 | break; |
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| 253 | case TX_PKT_BUF_RTS: |
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| 254 | case TX_PKT_BUF_ACK_CTS: |
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| 255 | unlock_tx_pkt_buf(i); |
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| 256 | break; |
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| 257 | default: |
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| 258 | break; |
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| 259 | } |
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| 260 | } |
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| 261 | |
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| 262 | // *************************************************** |
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| 263 | // Initialize Receive Packet Buffers |
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| 264 | // *************************************************** |
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| 265 | for(i = 0; i < NUM_RX_PKT_BUFS; i++){ |
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| 266 | rx_frame_info = (rx_frame_info_t*)CALC_PKT_BUF_ADDR(platform_common_dev_info.rx_pkt_buf_baseaddr, i); |
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| 267 | switch(rx_frame_info->rx_pkt_buf_state){ |
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| 268 | case RX_PKT_BUF_UNINITIALIZED: |
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| 269 | case RX_PKT_BUF_LOW_CTRL: |
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| 270 | //CPU_LOW will initialize |
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| 271 | break; |
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| 272 | case RX_PKT_BUF_HIGH_CTRL: |
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| 273 | case RX_PKT_BUF_READY: |
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| 274 | // CPU HIGH rebooted after CPU Low submitted packet for de-encap/logging |
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| 275 | // Release lock and reset state |
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| 276 | // Note: this will not cause CPU_LOW to re-lock this packet buffer. |
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| 277 | // The effects of this are subtle. CPU_LOW will see that the buffer |
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| 278 | // Is under LOW_CTRL and will assume it has a mutex lock. It will |
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| 279 | // fill the packet buffer all while the mutex is unlocked. Once the |
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| 280 | // state transitions to READY and is passed to CPU_HIGH, this ambiguous |
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| 281 | // state will be resolved. |
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| 282 | default: |
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| 283 | // Something went wrong if rx_pkt_buf_state is something |
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| 284 | // other than one of the rx_pkt_buf_state_t enums. We'll |
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| 285 | // attempt to resolve the problem by explicitly setting |
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| 286 | // the state. |
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| 287 | unlock_rx_pkt_buf(i); |
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| 288 | rx_frame_info->rx_pkt_buf_state = RX_PKT_BUF_LOW_CTRL; |
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| 289 | |
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| 290 | break; |
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| 291 | } |
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| 292 | } |
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| 293 | |
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| 294 | // *************************************************** |
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| 295 | // Initialize CDMA, GPIO, and UART drivers |
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| 296 | // *************************************************** |
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| 297 | |
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| 298 | // Initialize the central DMA (CDMA) driver |
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| 299 | cdma_cfg_ptr = XAxiCdma_LookupConfig(platform_high_dev_info.cdma_dev_id); |
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| 300 | Status = XAxiCdma_CfgInitialize(&cdma_inst, cdma_cfg_ptr, cdma_cfg_ptr->BaseAddress); |
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| 301 | if (Status != XST_SUCCESS) { |
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| 302 | wlan_printf(PL_ERROR, "ERROR: Could not initialize CDMA: %d\n", Status); |
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| 303 | } |
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| 304 | XAxiCdma_IntrDisable(&cdma_inst, XAXICDMA_XR_IRQ_ALL_MASK); |
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| 305 | |
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| 306 | xil_printf("------------------------\n"); |
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| 307 | xil_printf("Testing DRAM...\n"); |
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| 308 | |
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| 309 | // If the CPU hangs at this point there is probably a problem with the DRAM... |
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| 310 | |
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| 311 | if(wlan_mac_high_memory_test() != 0 ){ |
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| 312 | xil_printf("A working DRAM SODIMM has not been detected on this board.\n"); |
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| 313 | xil_printf("The 802.11 Reference Design requires at least 1GB of DRAM.\n"); |
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| 314 | xil_printf("This CPU will now halt.\n"); |
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| 315 | wlan_platform_high_userio_disp_status(USERIO_DISP_STATUS_CPU_ERROR, WLAN_ERROR_CODE_DRAM_NOT_PRESENT); |
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| 316 | } |
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| 317 | |
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| 318 | // *************************************************** |
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| 319 | // Initialize various subsystems in the MAC High Framework |
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| 320 | // *************************************************** |
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| 321 | queue_init(); |
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| 322 | |
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| 323 | #if WLAN_SW_CONFIG_ENABLE_LOGGING |
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| 324 | // The event_list lives in DRAM immediately following the queue payloads. |
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| 325 | if(MAX_EVENT_LOG == -1){ |
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| 326 | log_size = EVENT_LOG_SIZE; |
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| 327 | } else { |
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| 328 | log_size = WLAN_MIN(EVENT_LOG_SIZE, (u32)MAX_EVENT_LOG ); |
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| 329 | } |
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| 330 | |
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| 331 | event_log_init( (void*)EVENT_LOG_BASE, log_size ); |
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| 332 | #endif //WLAN_SW_CONFIG_ENABLE_LOGGING |
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| 333 | |
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| 334 | network_info_init(); |
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| 335 | station_info_init(); |
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| 336 | |
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| 337 | station_info_t* station_info = station_info_create((u8*)bcast_addr); |
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| 338 | station_info->flags |= STATION_INFO_FLAG_KEEP; |
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| 339 | |
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| 340 | #if WLAN_SW_CONFIG_ENABLE_ETH_BRIDGE |
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| 341 | wlan_eth_util_init(); |
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| 342 | #endif |
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| 343 | wlan_mac_schedule_init(); |
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| 344 | #if WLAN_SW_CONFIG_ENABLE_LTG |
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| 345 | wlan_mac_ltg_sched_init(); |
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| 346 | #endif //WLAN_SW_CONFIG_ENABLE_LTG |
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| 347 | wlan_mac_addr_filter_init(); |
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| 348 | wlan_mac_scan_init(); |
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| 349 | |
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| 350 | //Non-blocking request for CPU_LOW to send its state. This handles the case that |
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| 351 | //CPU_HIGH reboots some point after CPU_LOW had already booted. |
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| 352 | wlan_mac_high_request_low_state(); |
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| 353 | |
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| 354 | wlan_mac_high_set_radio_channel(1); // Set a sane default channel. The top-level project (AP/STA/IBSS/etc) is free to change this |
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| 355 | |
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| 356 | // Initialize Interrupts |
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| 357 | wlan_mac_high_interrupt_init(); |
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| 358 | } |
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| 359 | |
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| 360 | |
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| 361 | |
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| 362 | /** |
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| 363 | * @brief Initialize MAC High Framework's Interrupts |
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| 364 | * |
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| 365 | * This function initializes sets up the interrupt subsystem |
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| 366 | * of the MAC High Framework. |
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| 367 | * |
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| 368 | * @param None |
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| 369 | * @return WLAN_SUCCESS or WLAN_FAILURE |
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| 370 | */ |
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| 371 | int wlan_mac_high_interrupt_init() { |
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| 372 | int Result; |
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| 373 | |
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| 374 | // *************************************************** |
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| 375 | // Connect interrupt devices "owned" by wlan_mac_high |
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| 376 | // *************************************************** |
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| 377 | |
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| 378 | // *************************************************** |
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| 379 | // Connect interrupt devices in other subsystems |
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| 380 | // *************************************************** |
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| 381 | Result = wlan_platform_high_init(); |
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| 382 | if (Result != WLAN_SUCCESS) { |
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| 383 | wlan_printf(PL_ERROR,"Failed to set up Ethernet interrupt\n"); |
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| 384 | return Result; |
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| 385 | } |
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| 386 | |
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| 387 | Result = setup_mailbox_interrupt(); |
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| 388 | if (Result != WLAN_SUCCESS) { |
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| 389 | wlan_printf(PL_ERROR, "Failed to set up wlan_lib mailbox interrupt\n"); |
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| 390 | return WLAN_FAILURE; |
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| 391 | } |
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| 392 | |
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| 393 | // *************************************************** |
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| 394 | // Enable MicroBlaze exceptions |
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| 395 | // *************************************************** |
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| 396 | Xil_ExceptionInit(); |
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| 397 | Xil_ExceptionEnable(); |
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| 398 | |
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| 399 | // Finish setting up any subsystems that were waiting on interrupts to be configured |
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| 400 | network_info_init_finish(); |
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| 401 | |
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| 402 | |
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| 403 | return WLAN_SUCCESS; |
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| 404 | } |
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| 405 | |
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| 406 | void wlan_mac_high_uart_rx_callback(u8 rxByte){ |
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| 407 | uart_callback(rxByte); |
---|
| 408 | } |
---|
| 409 | |
---|
| 410 | void wlan_mac_high_userio_inputs_callback(u32 userio_state, userio_input_mask_t userio_delta){ |
---|
| 411 | switch(userio_delta){ |
---|
| 412 | case USERIO_INPUT_MASK_PB_0: |
---|
| 413 | if(userio_state){ |
---|
| 414 | press_pb_0_callback(); |
---|
| 415 | } else { |
---|
| 416 | release_pb_0_callback(); |
---|
| 417 | } |
---|
| 418 | break; |
---|
| 419 | case USERIO_INPUT_MASK_PB_1: |
---|
| 420 | if(userio_state){ |
---|
| 421 | press_pb_1_callback(); |
---|
| 422 | } else { |
---|
| 423 | release_pb_1_callback(); |
---|
| 424 | } |
---|
| 425 | break; |
---|
| 426 | case USERIO_INPUT_MASK_PB_2: |
---|
| 427 | if(userio_state){ |
---|
| 428 | press_pb_2_callback(); |
---|
| 429 | } else { |
---|
| 430 | release_pb_2_callback(); |
---|
| 431 | } |
---|
| 432 | break; |
---|
| 433 | default: |
---|
| 434 | //Not implemented |
---|
| 435 | break; |
---|
| 436 | } |
---|
| 437 | } |
---|
| 438 | |
---|
| 439 | |
---|
| 440 | void wlan_mac_high_sw_intr_callback(u32 intr_state){ |
---|
| 441 | |
---|
| 442 | #if WLAN_SW_CONFIG_ENABLE_ETH_BRIDGE |
---|
| 443 | if(intr_state & SW_INTR_ID_PORTAL_ETH_RX){ |
---|
| 444 | wlan_poll_eth_rx_queue(); |
---|
| 445 | } |
---|
| 446 | if(intr_state & SW_INTR_ID_PORTAL_ETH_TX){ |
---|
| 447 | wlan_poll_eth_tx_queue(); |
---|
| 448 | } |
---|
| 449 | #endif |
---|
| 450 | |
---|
| 451 | #if WLAN_SW_CONFIG_ENABLE_WLAN_EXP |
---|
| 452 | if(intr_state & SW_INTR_ID_WLAN_EXP_ETH_TX){ |
---|
| 453 | wlan_exp_handle_tx_queue(); |
---|
| 454 | } |
---|
| 455 | #endif |
---|
| 456 | } |
---|
| 457 | |
---|
| 458 | |
---|
| 459 | void wlan_mac_high_set_press_pb_0_callback(function_ptr_t callback){ |
---|
| 460 | press_pb_0_callback = callback; |
---|
| 461 | } |
---|
| 462 | void wlan_mac_high_set_release_pb_0_callback(function_ptr_t callback){ |
---|
| 463 | release_pb_0_callback = callback; |
---|
| 464 | } |
---|
| 465 | void wlan_mac_high_set_press_pb_1_callback(function_ptr_t callback){ |
---|
| 466 | press_pb_1_callback = callback; |
---|
| 467 | } |
---|
| 468 | void wlan_mac_high_set_release_pb_1_callback(function_ptr_t callback){ |
---|
| 469 | release_pb_1_callback = callback; |
---|
| 470 | } |
---|
| 471 | void wlan_mac_high_set_press_pb_2_callback(function_ptr_t callback){ |
---|
| 472 | press_pb_2_callback = callback; |
---|
| 473 | } |
---|
| 474 | void wlan_mac_high_set_release_pb_2_callback(function_ptr_t callback){ |
---|
| 475 | release_pb_2_callback = callback; |
---|
| 476 | } |
---|
| 477 | |
---|
| 478 | |
---|
| 479 | /** |
---|
| 480 | * @brief Set UART Reception Callback |
---|
| 481 | * |
---|
| 482 | * Tells the framework which function should be called when |
---|
| 483 | * a byte is received from UART. |
---|
| 484 | * |
---|
| 485 | * @param function_ptr_t callback |
---|
| 486 | * - Pointer to callback function |
---|
| 487 | * @return None |
---|
| 488 | * |
---|
| 489 | */ |
---|
| 490 | void wlan_mac_high_set_uart_rx_callback(function_ptr_t callback){ |
---|
| 491 | uart_callback = callback; |
---|
| 492 | } |
---|
| 493 | |
---|
| 494 | /** |
---|
| 495 | * @brief Set MPDU Transmission Complete Callback (High-level) |
---|
| 496 | * |
---|
| 497 | * Tells the framework which function should be called when |
---|
| 498 | * the lower-level CPU confirms that a high-level MPDU transmission has |
---|
| 499 | * completed. |
---|
| 500 | * |
---|
| 501 | * @param function_ptr_t callback |
---|
| 502 | * - Pointer to callback function |
---|
| 503 | * @return None |
---|
| 504 | * |
---|
| 505 | * @note This callback is not executed for individual retransmissions. |
---|
| 506 | * It is instead only executed after a chain of retransmissions is complete |
---|
| 507 | * either through the reception of an ACK or the number of retransmissions |
---|
| 508 | * reaching the maximum number of retries specified by the MPDU's |
---|
| 509 | * tx_frame_info metadata. |
---|
| 510 | * |
---|
| 511 | */ |
---|
| 512 | void wlan_mac_high_set_mpdu_tx_high_done_callback(function_ptr_t callback){ |
---|
| 513 | mpdu_tx_high_done_callback = callback; |
---|
| 514 | } |
---|
| 515 | |
---|
| 516 | /** |
---|
| 517 | * @brief Set MPDU Transmission Complete Callback (Low-level) |
---|
| 518 | * |
---|
| 519 | * Tells the framework which function should be called when |
---|
| 520 | * the lower-level CPU confirms that a low-level MPDU transmission has |
---|
| 521 | * completed. |
---|
| 522 | * |
---|
| 523 | * @param function_ptr_t callback |
---|
| 524 | * - Pointer to callback function |
---|
| 525 | * @return None |
---|
| 526 | * |
---|
| 527 | */ |
---|
| 528 | void wlan_mac_high_set_mpdu_tx_low_done_callback(function_ptr_t callback){ |
---|
| 529 | mpdu_tx_low_done_callback = callback; |
---|
| 530 | } |
---|
| 531 | |
---|
| 532 | |
---|
| 533 | void wlan_mac_high_set_beacon_tx_done_callback(function_ptr_t callback){ |
---|
| 534 | beacon_tx_done_callback = callback; |
---|
| 535 | } |
---|
| 536 | |
---|
| 537 | |
---|
| 538 | /** |
---|
| 539 | * @brief Set MPDU Reception Callback |
---|
| 540 | * |
---|
| 541 | * Tells the framework which function should be called when |
---|
| 542 | * the lower-level CPU receives a valid MPDU frame. |
---|
| 543 | * |
---|
| 544 | * @param function_ptr_t callback |
---|
| 545 | * - Pointer to callback function |
---|
| 546 | * @return None |
---|
| 547 | * |
---|
| 548 | */ |
---|
| 549 | void wlan_mac_high_set_mpdu_rx_callback(function_ptr_t callback){ |
---|
| 550 | mpdu_rx_callback = callback; |
---|
| 551 | } |
---|
| 552 | |
---|
| 553 | |
---|
| 554 | |
---|
| 555 | /** |
---|
| 556 | * @brief Set Poll Tx Queue Callback |
---|
| 557 | * |
---|
| 558 | * Tells the framework which function should be called whenever |
---|
| 559 | * the framework knows that CPU_LOW is ready to send a new packet. |
---|
| 560 | * |
---|
| 561 | * @param function_ptr_t callback |
---|
| 562 | * - Pointer to callback function |
---|
| 563 | * @return None |
---|
| 564 | * |
---|
| 565 | */ |
---|
| 566 | void wlan_mac_high_set_poll_tx_queues_callback(function_ptr_t callback){ |
---|
| 567 | tx_poll_callback = callback; |
---|
| 568 | } |
---|
| 569 | |
---|
| 570 | |
---|
| 571 | /** |
---|
| 572 | * @brief Set MPDU Dequeue Callback |
---|
| 573 | * |
---|
| 574 | * Tells the framework which function should be called when |
---|
| 575 | * a packet is dequeued and about to be passed to the |
---|
| 576 | * lower-level CPU. |
---|
| 577 | * |
---|
| 578 | * @param function_ptr_t callback |
---|
| 579 | * - Pointer to callback function |
---|
| 580 | * @return None |
---|
| 581 | * |
---|
| 582 | */ |
---|
| 583 | void wlan_mac_high_set_mpdu_dequeue_callback(function_ptr_t callback){ |
---|
| 584 | mpdu_tx_dequeue_callback = callback; |
---|
| 585 | } |
---|
| 586 | |
---|
| 587 | |
---|
| 588 | /** |
---|
| 589 | * @brief Set CPU_LOW Reboot Callback |
---|
| 590 | * |
---|
| 591 | * Tells the framework which function should be called when |
---|
| 592 | * CPU_LOW boots or reboots. This allows a high-level application |
---|
| 593 | * to restore any parameters it previously set in CPU_LOW |
---|
| 594 | * |
---|
| 595 | * @param function_ptr_t callback |
---|
| 596 | * - Pointer to callback function |
---|
| 597 | * @return None |
---|
| 598 | * |
---|
| 599 | */ |
---|
| 600 | void wlan_mac_high_set_cpu_low_reboot_callback(function_ptr_t callback){ |
---|
| 601 | cpu_low_reboot_callback = callback; |
---|
| 602 | } |
---|
| 603 | |
---|
| 604 | /** |
---|
| 605 | * @brief Set Tx queue state change callback |
---|
| 606 | * |
---|
| 607 | * Tells the framework which function should be called when |
---|
| 608 | * the Tx queue for a network member changes state. |
---|
| 609 | * |
---|
| 610 | * @param function_ptr_t callback |
---|
| 611 | * - Pointer to callback function |
---|
| 612 | * @return None |
---|
| 613 | * |
---|
| 614 | */ |
---|
| 615 | void wlan_mac_high_set_tx_queue_state_change_callback(function_ptr_t callback){ |
---|
| 616 | tx_queue_state_change_callback = callback; |
---|
| 617 | } |
---|
| 618 | |
---|
| 619 | |
---|
| 620 | /** |
---|
| 621 | * @brief Display Memory Allocation Information |
---|
| 622 | * |
---|
| 623 | * This function is a wrapper around a call to mallinfo(). It prints |
---|
| 624 | * the information returned by mallinfo() to aid in the debugging of |
---|
| 625 | * memory leaks and other dynamic memory allocation issues. |
---|
| 626 | * |
---|
| 627 | * @param None |
---|
| 628 | * @return None |
---|
| 629 | * |
---|
| 630 | */ |
---|
| 631 | void wlan_mac_high_display_mallinfo(){ |
---|
| 632 | struct mallinfo mi; |
---|
| 633 | mi = mallinfo(); |
---|
| 634 | |
---|
| 635 | xil_printf("\n"); |
---|
| 636 | xil_printf("--- Malloc Info ---\n"); |
---|
| 637 | xil_printf("Summary:\n"); |
---|
| 638 | xil_printf(" num_malloc: %d\n", num_malloc); |
---|
| 639 | xil_printf(" num_realloc: %d\n", num_realloc); |
---|
| 640 | xil_printf(" num_free: %d\n", num_free); |
---|
| 641 | xil_printf(" num_malloc-num_free: %d\n", (int)num_malloc - (int)num_free); |
---|
| 642 | xil_printf(" System: %d bytes\n", mi.arena); |
---|
| 643 | xil_printf(" Total Allocated Space: %d bytes\n", mi.uordblks); |
---|
| 644 | xil_printf(" Total Free Space: %d bytes\n", mi.fordblks); |
---|
| 645 | #if 0 |
---|
| 646 | xil_printf("Details:\n"); |
---|
| 647 | xil_printf(" arena: %d\n", mi.arena); |
---|
| 648 | xil_printf(" ordblks: %d\n", mi.ordblks); |
---|
| 649 | xil_printf(" smblks: %d\n", mi.smblks); |
---|
| 650 | xil_printf(" hblks: %d\n", mi.hblks); |
---|
| 651 | xil_printf(" hblkhd: %d\n", mi.hblkhd); |
---|
| 652 | xil_printf(" usmblks: %d\n", mi.usmblks); |
---|
| 653 | xil_printf(" fsmblks: %d\n", mi.fsmblks); |
---|
| 654 | xil_printf(" uordblks: %d\n", mi.uordblks); |
---|
| 655 | xil_printf(" fordblks: %d\n", mi.fordblks); |
---|
| 656 | xil_printf(" keepcost: %d\n", mi.keepcost); |
---|
| 657 | #endif |
---|
| 658 | } |
---|
| 659 | |
---|
| 660 | |
---|
| 661 | |
---|
| 662 | /** |
---|
| 663 | * @brief Dynamically Allocate Memory |
---|
| 664 | * |
---|
| 665 | * This function wraps malloc() and uses its same API. |
---|
| 666 | * |
---|
| 667 | * @param u32 size |
---|
| 668 | * - Number of bytes that should be allocated |
---|
| 669 | * @return void* |
---|
| 670 | * - Memory address of allocation if the allocation was successful |
---|
| 671 | * - NULL if the allocation was unsuccessful |
---|
| 672 | * |
---|
| 673 | * @note The purpose of this function is to funnel all memory allocations through one place in |
---|
| 674 | * code to enable easier debugging of memory leaks when they occur. This function also updates |
---|
| 675 | * a variable maintained by the framework to track the number of memory allocations and prints |
---|
| 676 | * this value, along with the other data from wlan_mac_high_display_mallinfo() in the event that |
---|
| 677 | * malloc() fails to allocate the requested size. |
---|
| 678 | * |
---|
| 679 | */ |
---|
| 680 | void* wlan_mac_high_malloc(u32 size){ |
---|
| 681 | void* return_value; |
---|
| 682 | return_value = malloc(size); |
---|
| 683 | |
---|
| 684 | if(return_value == NULL){ |
---|
| 685 | xil_printf("malloc error. Try increasing heap size in linker script.\n"); |
---|
| 686 | wlan_mac_high_display_mallinfo(); |
---|
| 687 | } else { |
---|
| 688 | #if 0 |
---|
| 689 | xil_printf("MALLOC - 0x%08x %d\n", return_value, size); |
---|
| 690 | #endif |
---|
| 691 | num_malloc++; |
---|
| 692 | } |
---|
| 693 | return return_value; |
---|
| 694 | } |
---|
| 695 | |
---|
| 696 | |
---|
| 697 | |
---|
| 698 | /** |
---|
| 699 | * @brief Dynamically Allocate and Initialize Memory |
---|
| 700 | * |
---|
| 701 | * This function wraps wlan_mac_high_malloc() and uses its same API. If successfully allocated, |
---|
| 702 | * this function will explicitly zero-initialize the allocated memory. |
---|
| 703 | * |
---|
| 704 | * @param u32 size |
---|
| 705 | * - Number of bytes that should be allocated |
---|
| 706 | * @return void* |
---|
| 707 | * - Memory address of allocation if the allocation was successful |
---|
| 708 | * - NULL if the allocation was unsuccessful |
---|
| 709 | * |
---|
| 710 | * @see wlan_mac_high_malloc() |
---|
| 711 | * |
---|
| 712 | */ |
---|
| 713 | void* wlan_mac_high_calloc(u32 size){ |
---|
| 714 | //This is just a simple wrapper around calloc to aid in debugging memory leak issues |
---|
| 715 | void* return_value; |
---|
| 716 | return_value = wlan_mac_high_malloc(size); |
---|
| 717 | |
---|
| 718 | if(return_value == NULL){ |
---|
| 719 | } else { |
---|
| 720 | memset(return_value, 0 , size); |
---|
| 721 | } |
---|
| 722 | return return_value; |
---|
| 723 | } |
---|
| 724 | |
---|
| 725 | |
---|
| 726 | |
---|
| 727 | /** |
---|
| 728 | * @brief Dynamically Reallocate Memory |
---|
| 729 | * |
---|
| 730 | * This function wraps realloc() and uses its same API. |
---|
| 731 | * |
---|
| 732 | * @param void* addr |
---|
| 733 | * - Address of dynamically allocated array that should be reallocated |
---|
| 734 | * @param u32 size |
---|
| 735 | * - Number of bytes that should be allocated |
---|
| 736 | * @return void* |
---|
| 737 | * - Memory address of allocation if the allocation was successful |
---|
| 738 | * - NULL if the allocation was unsuccessful |
---|
| 739 | * |
---|
| 740 | * @note The purpose of this function is to funnel all memory allocations through one place in |
---|
| 741 | * code to enable easier debugging of memory leaks when they occur. This function also updates |
---|
| 742 | * a variable maintained by the framework to track the number of memory allocations and prints |
---|
| 743 | * this value, along with the other data from wlan_mac_high_display_mallinfo() in the event that |
---|
| 744 | * realloc() fails to allocate the requested size. |
---|
| 745 | * |
---|
| 746 | */ |
---|
| 747 | void* wlan_mac_high_realloc(void* addr, u32 size){ |
---|
| 748 | void* return_value; |
---|
| 749 | return_value = realloc(addr, size); |
---|
| 750 | |
---|
| 751 | if(return_value == NULL){ |
---|
| 752 | xil_printf("realloc error. Try increasing heap size in linker script.\n"); |
---|
| 753 | wlan_mac_high_display_mallinfo(); |
---|
| 754 | } else { |
---|
| 755 | #if 0 |
---|
| 756 | xil_printf("REALLOC - 0x%08x %d\n", return_value, size); |
---|
| 757 | #endif |
---|
| 758 | num_realloc++; |
---|
| 759 | } |
---|
| 760 | |
---|
| 761 | return return_value; |
---|
| 762 | } |
---|
| 763 | |
---|
| 764 | |
---|
| 765 | |
---|
| 766 | /** |
---|
| 767 | * @brief Free Dynamically Allocated Memory |
---|
| 768 | * |
---|
| 769 | * This function wraps free() and uses its same API. |
---|
| 770 | * |
---|
| 771 | * @param void* addr |
---|
| 772 | * - Address of dynamically allocated array that should be freed |
---|
| 773 | * @return None |
---|
| 774 | * |
---|
| 775 | * @note The purpose of this function is to funnel all memory freeing through one place in |
---|
| 776 | * code to enable easier debugging of memory leaks when they occur. This function also updates |
---|
| 777 | * a variable maintained by the framework to track the number of memory frees. |
---|
| 778 | * |
---|
| 779 | */ |
---|
| 780 | void wlan_mac_high_free(void* addr){ |
---|
| 781 | #if 0 |
---|
| 782 | xil_printf("FREE - 0x%08x\n", addr); |
---|
| 783 | #endif |
---|
| 784 | free(addr); |
---|
| 785 | num_free++; |
---|
| 786 | } |
---|
| 787 | |
---|
| 788 | |
---|
| 789 | |
---|
| 790 | /** |
---|
| 791 | * @brief Test DDR3 SODIMM Memory Module |
---|
| 792 | * |
---|
| 793 | * This function tests the integrity of the DDR3 SODIMM module attached to the hardware |
---|
| 794 | * by performing various write and read tests. Note, this function will destory contents |
---|
| 795 | * in DRAM, so it should only be called immediately after booting. |
---|
| 796 | * |
---|
| 797 | * @param None |
---|
| 798 | * @return int |
---|
| 799 | * - WLAN_SUCCESS for memory test pass |
---|
| 800 | * - WLAN_FAILURE for memory test fail |
---|
| 801 | */ |
---|
| 802 | int wlan_mac_high_memory_test() { |
---|
| 803 | |
---|
| 804 | volatile u8 i,j; |
---|
| 805 | |
---|
| 806 | volatile u8 test_u8; |
---|
| 807 | volatile u16 test_u16; |
---|
| 808 | volatile u32 test_u32; |
---|
| 809 | volatile u64 test_u64; |
---|
| 810 | |
---|
| 811 | volatile u8 readback_u8; |
---|
| 812 | volatile u16 readback_u16; |
---|
| 813 | volatile u32 readback_u32; |
---|
| 814 | volatile u64 readback_u64; |
---|
| 815 | |
---|
| 816 | volatile void* memory_ptr; |
---|
| 817 | |
---|
| 818 | for(i=0; i<6; i++) { |
---|
| 819 | // Jump by 100MB steps |
---|
| 820 | memory_ptr = (void*)((u8*)platform_high_dev_info.dram_baseaddr + (i*100*1024*1024)); |
---|
| 821 | |
---|
| 822 | // Test all types at multiple byte offsets to verify unaligned accesses succeed |
---|
| 823 | for(j=0; j<3; j++) { |
---|
| 824 | test_u8 = rand()&0xFF; |
---|
| 825 | test_u16 = rand()&0xFFFF; |
---|
| 826 | test_u32 = rand()&0xFFFFFFFF; |
---|
| 827 | test_u64 = (((u64)rand()&0xFFFFFFFF)<<32) + ((u64)rand()&0xFFFFFFFF); |
---|
| 828 | |
---|
| 829 | *((u8*)memory_ptr) = test_u8; |
---|
| 830 | readback_u8 = *((u8*)memory_ptr); |
---|
| 831 | |
---|
| 832 | if(readback_u8!= test_u8){ |
---|
| 833 | xil_printf("0x%08x: %2x = %2x\n", memory_ptr, readback_u8, test_u8); |
---|
| 834 | xil_printf("DRAM Failure: Addr: 0x%08x -- Unable to verify write of u8\n",memory_ptr); |
---|
| 835 | return WLAN_FAILURE; |
---|
| 836 | } |
---|
| 837 | *((u16*)memory_ptr) = test_u16; |
---|
| 838 | readback_u16 = *((u16*)memory_ptr); |
---|
| 839 | |
---|
| 840 | if(readback_u16 != test_u16){ |
---|
| 841 | xil_printf("0x%08x: %4x = %4x\n", memory_ptr, readback_u16, test_u16); |
---|
| 842 | xil_printf("DRAM Failure: Addr: 0x%08x -- Unable to verify write of u16\n",memory_ptr); |
---|
| 843 | return WLAN_FAILURE; |
---|
| 844 | } |
---|
| 845 | *((u32*)memory_ptr) = test_u32; |
---|
| 846 | readback_u32 = *((u32*)memory_ptr); |
---|
| 847 | |
---|
| 848 | if(readback_u32 != test_u32){ |
---|
| 849 | xil_printf("0x%08x: %8x = %8x\n", memory_ptr, readback_u32, test_u32); |
---|
| 850 | xil_printf("DRAM Failure: Addr: 0x%08x -- Unable to verify write of u32\n",memory_ptr); |
---|
| 851 | return WLAN_FAILURE; |
---|
| 852 | } |
---|
| 853 | |
---|
| 854 | // Disabling u64 test for now - we've observed Zynq ARM is unable to do unaligned |
---|
| 855 | // 64-bit DRAM read/write, even when 8/16/32-bit unaligned accesses succeed |
---|
| 856 | // FIXME: figure out why ARM fails when MB succeeds using the same memory controller and interface |
---|
| 857 | #ifdef __MICROBLAZE__ |
---|
| 858 | *((u64*)memory_ptr) = test_u64; |
---|
| 859 | readback_u64 = *((u64*)memory_ptr); |
---|
| 860 | |
---|
| 861 | if(readback_u64!= test_u64){ |
---|
| 862 | xil_printf("DRAM Failure: Addr: 0x%08x -- Unable to verify write of u64\n",memory_ptr); |
---|
| 863 | return WLAN_FAILURE; |
---|
| 864 | } |
---|
| 865 | #endif |
---|
| 866 | memory_ptr++; |
---|
| 867 | } |
---|
| 868 | } |
---|
| 869 | |
---|
| 870 | return WLAN_SUCCESS; |
---|
| 871 | } |
---|
| 872 | |
---|
| 873 | |
---|
| 874 | |
---|
| 875 | /** |
---|
| 876 | * @brief Test Right Shift Operator |
---|
| 877 | * |
---|
| 878 | * This function tests the compiler right shift operator. This is due to a bug in |
---|
| 879 | * the Xilinx 14.7 toolchain when the '-Os' flag is used during compilation. Please |
---|
| 880 | * see: http://warpproject.org/forums/viewtopic.php?id=2472 for more information. |
---|
| 881 | * |
---|
| 882 | * @param None |
---|
| 883 | * @return int |
---|
| 884 | * - WLAN_SUCCESS for right shift test pass |
---|
| 885 | * - WLAN_FAILURE for right shift test fail |
---|
| 886 | */ |
---|
| 887 | int wlan_mac_high_right_shift_test(){ |
---|
| 888 | u8 val_3, val_2, val_1, val_0; |
---|
| 889 | |
---|
| 890 | volatile u32 test_val = 0xFEDCBA98; |
---|
| 891 | volatile u8* test_array = (u8 *)&test_val; |
---|
| 892 | |
---|
| 893 | val_3 = (u8)((test_val & 0xFF000000) >> 24); |
---|
| 894 | val_2 = (u8)((test_val & 0x00FF0000) >> 16); |
---|
| 895 | val_1 = (u8)((test_val & 0x0000FF00) >> 8); |
---|
| 896 | val_0 = (u8)((test_val & 0x000000FF) >> 0); |
---|
| 897 | |
---|
| 898 | if ((val_3 != test_array[3]) || (val_2 != test_array[2]) || (val_1 != test_array[1]) || (val_0 != test_array[0])) { |
---|
| 899 | xil_printf("Right shift operator is not operating correctly in this toolchain.\n"); |
---|
| 900 | xil_printf("Please use Xilinx 14.4 or an optimization level other than '-Os'\n"); |
---|
| 901 | xil_printf("See http://warpproject.org/forums/viewtopic.php?id=2472 for more info.\n"); |
---|
| 902 | return WLAN_FAILURE; |
---|
| 903 | } |
---|
| 904 | |
---|
| 905 | return WLAN_SUCCESS; |
---|
| 906 | } |
---|
| 907 | |
---|
| 908 | |
---|
| 909 | |
---|
| 910 | /** |
---|
| 911 | * @brief Start Central DMA Transfer |
---|
| 912 | * |
---|
| 913 | * This function wraps the XAxiCdma call for a CDMA memory transfer and mimics the well-known |
---|
| 914 | * API of memcpy(). This function does not block once the transfer is started. |
---|
| 915 | * |
---|
| 916 | * @param void* dest |
---|
| 917 | * - Pointer to destination address where bytes should be copied |
---|
| 918 | * @param void* src |
---|
| 919 | * - Pointer to source address from where bytes should be copied |
---|
| 920 | * @param u32 size |
---|
| 921 | * - Number of bytes that should be copied |
---|
| 922 | * @return int |
---|
| 923 | * - WLAN_SUCCESS for success of submission |
---|
| 924 | * - WLAN_FAILURE for submission failure |
---|
| 925 | * |
---|
| 926 | * @note This function will block until any existing CDMA transfer is complete. It is therefore |
---|
| 927 | * safe to call this function successively as each call will wait on the preceeding call. |
---|
| 928 | * |
---|
| 929 | */ |
---|
| 930 | |
---|
| 931 | int wlan_mac_high_cdma_start_transfer(void* dest, void* src, u32 size){ |
---|
| 932 | //This is a wrapper function around the central DMA simple transfer call. It's arguments |
---|
| 933 | //are intended to be similar to memcpy. Note: This function does not block on the transfer. |
---|
| 934 | int return_value; |
---|
| 935 | interrupt_state_t prev_interrupt_state; |
---|
| 936 | |
---|
| 937 | prev_interrupt_state = wlan_platform_intc_stop(); |
---|
| 938 | |
---|
| 939 | if( size == 0 ){ |
---|
| 940 | xil_printf("CDMA Error: size argument must be > 0\n"); |
---|
| 941 | xil_printf("0x%08x -> 0x%08x: %d\n", src, dest, size); |
---|
| 942 | return WLAN_FAILURE; |
---|
| 943 | } |
---|
| 944 | |
---|
| 945 | wlan_mac_high_cdma_finish_transfer(); |
---|
| 946 | return_value = XAxiCdma_SimpleTransfer(&cdma_inst, (u32)src, (u32)dest, size, NULL, NULL); |
---|
| 947 | |
---|
| 948 | if(return_value != 0){ |
---|
| 949 | xil_printf("CDMA Error: code %d, (0x%08x,0x%08x,%d)\n", return_value, dest,src,size); |
---|
| 950 | } |
---|
| 951 | |
---|
| 952 | if(return_value == XST_SUCCESS){ |
---|
| 953 | return_value = WLAN_SUCCESS; |
---|
| 954 | } else { |
---|
| 955 | return_value = WLAN_FAILURE; |
---|
| 956 | } |
---|
| 957 | |
---|
| 958 | wlan_platform_intc_set_state(prev_interrupt_state); |
---|
| 959 | |
---|
| 960 | return return_value; |
---|
| 961 | } |
---|
| 962 | |
---|
| 963 | |
---|
| 964 | |
---|
| 965 | /** |
---|
| 966 | * @brief Finish Central DMA Transfer |
---|
| 967 | * |
---|
| 968 | * This function will block until an ongoing CDMA transfer is complete. |
---|
| 969 | * If there is no CDMA transfer underway when this function is called, it |
---|
| 970 | * returns immediately. |
---|
| 971 | * |
---|
| 972 | * @param None |
---|
| 973 | * @return None |
---|
| 974 | * |
---|
| 975 | */ |
---|
| 976 | void wlan_mac_high_cdma_finish_transfer(){ |
---|
| 977 | while(XAxiCdma_IsBusy(&cdma_inst)) {} |
---|
| 978 | return; |
---|
| 979 | } |
---|
| 980 | |
---|
| 981 | |
---|
| 982 | |
---|
| 983 | /** |
---|
| 984 | * @brief Transmit MPDU |
---|
| 985 | * |
---|
| 986 | * This function passes off an MPDU to the lower-level processor for transmission. |
---|
| 987 | * |
---|
| 988 | */ |
---|
| 989 | void wlan_mac_high_mpdu_transmit(tx_80211_queue_buffer_t* tx_queue_buffer, int tx_pkt_buf) { |
---|
| 990 | wlan_ipc_msg_t ipc_msg_to_low; |
---|
| 991 | tx_frame_info_t* tx_frame_info; |
---|
| 992 | mac_header_80211* header; |
---|
| 993 | |
---|
| 994 | u8 frame_control_1; |
---|
| 995 | tx_params_t default_tx_params; |
---|
| 996 | u8 is_multicast; |
---|
| 997 | station_info_t* station_info_ptr; |
---|
| 998 | u8* copy_destination; |
---|
| 999 | |
---|
| 1000 | station_info_ptr = tx_queue_buffer->station_info; |
---|
| 1001 | tx_frame_info = (tx_frame_info_t*)CALC_PKT_BUF_ADDR(platform_common_dev_info.tx_pkt_buf_baseaddr, tx_pkt_buf); |
---|
| 1002 | |
---|
| 1003 | header = (mac_header_80211*)(tx_queue_buffer->pkt); |
---|
| 1004 | is_multicast = wlan_addr_mcast(header->address_1); |
---|
| 1005 | |
---|
| 1006 | // Call user code to notify it of dequeue |
---|
| 1007 | mpdu_tx_dequeue_callback(tx_queue_buffer); |
---|
| 1008 | |
---|
| 1009 | copy_destination = (u8*)(((u8*)CALC_PKT_BUF_ADDR(platform_common_dev_info.tx_pkt_buf_baseaddr, tx_pkt_buf)) + sizeof(tx_frame_info_t) + PHY_TX_PKT_BUF_PHY_HDR_SIZE); |
---|
| 1010 | |
---|
| 1011 | // Copy section C1 with CDMA |
---|
| 1012 | if(tx_queue_buffer->seg1_len > 0){ |
---|
| 1013 | wlan_mac_high_cdma_start_transfer( copy_destination + tx_queue_buffer->seg0_len, |
---|
| 1014 | tx_queue_buffer->pkt + tx_queue_buffer->seg1_offset, |
---|
| 1015 | tx_queue_buffer->seg1_len ); |
---|
| 1016 | } |
---|
| 1017 | if(tx_queue_buffer->seg1_len > 0){ |
---|
| 1018 | // Copy section C0 with memcpy |
---|
| 1019 | memcpy( copy_destination, |
---|
| 1020 | tx_queue_buffer->pkt, |
---|
| 1021 | tx_queue_buffer->seg0_len ); |
---|
| 1022 | } else { |
---|
| 1023 | // Copy section C0 with CDMA |
---|
| 1024 | wlan_mac_high_cdma_start_transfer( copy_destination, |
---|
| 1025 | tx_queue_buffer->pkt, |
---|
| 1026 | tx_queue_buffer->seg0_len ); |
---|
| 1027 | } |
---|
| 1028 | |
---|
| 1029 | tx_frame_info->length = tx_queue_buffer->length; |
---|
| 1030 | tx_frame_info->queue_info = tx_queue_buffer->tx_queue_details; |
---|
| 1031 | tx_frame_info->flags = 0; |
---|
| 1032 | |
---|
| 1033 | if(tx_queue_buffer->flags & TX_80211_QUEUE_BUFFER_FLAGS_FILL_TIMESTAMP) tx_frame_info->flags |= TX_FRAME_INFO_FLAGS_FILL_TIMESTAMP; |
---|
| 1034 | if(tx_queue_buffer->flags & TX_80211_QUEUE_BUFFER_FLAGS_FILL_DURATION) tx_frame_info->flags |= TX_FRAME_INFO_FLAGS_FILL_DURATION; |
---|
| 1035 | if(tx_queue_buffer->flags & TX_80211_QUEUE_BUFFER_FLAGS_FILL_UNIQ_SEQ) tx_frame_info->flags |= TX_FRAME_INFO_FLAGS_FILL_UNIQ_SEQ; |
---|
| 1036 | |
---|
| 1037 | if((!is_multicast) & (!(tx_queue_buffer->flags & TX_80211_QUEUE_BUFFER_FLAGS_BYPASS_RECOVERY))){ |
---|
| 1038 | tx_frame_info->flags |= TX_FRAME_INFO_FLAGS_REQ_TO; //TODO: Since TA can be anything in full generality, |
---|
| 1039 | } // should we only raise this flag if TA = self? I'd |
---|
| 1040 | // prefer not to add a 6-byte comparison here if we |
---|
| 1041 | // can avoid it. |
---|
| 1042 | |
---|
| 1043 | tx_frame_info->unique_seq = 0; // Unique_seq will be filled in by CPU_LOW |
---|
| 1044 | |
---|
| 1045 | if( tx_queue_buffer->flags & TX_80211_QUEUE_BUFFER_FLAGS_TYPE_CTS ){ |
---|
| 1046 | tx_frame_info->tx_details_type = TX_DETAILS_CTS; |
---|
| 1047 | } else if( tx_queue_buffer->flags & TX_80211_QUEUE_BUFFER_FLAGS_TYPE_ACK ) { |
---|
| 1048 | tx_frame_info->tx_details_type = TX_DETAILS_ACK; |
---|
| 1049 | } else { |
---|
| 1050 | // Note: this will be overwritten as TX_DETAILS_RTS_ONLY or TX_DETAILS_RTS_MPDU in the PHY report |
---|
| 1051 | // if RTS/CTS enabled and the length of this packet is sufficiently large |
---|
| 1052 | tx_frame_info->tx_details_type = TX_DETAILS_MPDU; |
---|
| 1053 | } |
---|
| 1054 | |
---|
| 1055 | // Pull first byte from the payload of the packet so we can determine whether |
---|
| 1056 | // it is a management or data type |
---|
| 1057 | frame_control_1 = header->frame_control_1; //Note: header points to DRAM. We aren't relying on the bytes in the Tx packet buffer |
---|
| 1058 | //that are currently being copied because that would be a race |
---|
| 1059 | |
---|
| 1060 | if(station_info_ptr == NULL){ |
---|
| 1061 | // If there is no station_info tied to this enqueued packet, something must have gone wrong earlier |
---|
| 1062 | // (e.g. there wasn't room in aux. BRAM to create another station_info_t). We should retrieve |
---|
| 1063 | // default Tx parameters from the framework. |
---|
| 1064 | if(is_multicast){ |
---|
| 1065 | if( (frame_control_1 & MAC_FRAME_CTRL1_MASK_TYPE) == MAC_FRAME_CTRL1_TYPE_MGMT){ |
---|
| 1066 | default_tx_params = wlan_mac_get_default_tx_params(mcast_mgmt); |
---|
| 1067 | } else { |
---|
| 1068 | default_tx_params = wlan_mac_get_default_tx_params(mcast_data); |
---|
| 1069 | } |
---|
| 1070 | } else { |
---|
| 1071 | if( (frame_control_1 & MAC_FRAME_CTRL1_MASK_TYPE) == MAC_FRAME_CTRL1_TYPE_MGMT){ |
---|
| 1072 | default_tx_params = wlan_mac_get_default_tx_params(unicast_mgmt); |
---|
| 1073 | } else { |
---|
| 1074 | default_tx_params = wlan_mac_get_default_tx_params(unicast_data); |
---|
| 1075 | } |
---|
| 1076 | } |
---|
| 1077 | |
---|
| 1078 | memcpy(&(tx_frame_info->params), &default_tx_params, sizeof(tx_params_t)); |
---|
| 1079 | |
---|
| 1080 | } else { |
---|
| 1081 | if( (frame_control_1 & MAC_FRAME_CTRL1_MASK_TYPE) == MAC_FRAME_CTRL1_TYPE_MGMT){ |
---|
| 1082 | memcpy(&(tx_frame_info->params), &(station_info_ptr->tx_params_mgmt), sizeof(tx_params_t)); |
---|
| 1083 | } else { |
---|
| 1084 | memcpy(&(tx_frame_info->params), &(station_info_ptr->tx_params_data), sizeof(tx_params_t)); |
---|
| 1085 | } |
---|
| 1086 | //Sanitize tx_params based on HT capability of STA |
---|
| 1087 | wlan_mac_sanitize_tx_params(station_info_ptr, &(tx_frame_info->params)); |
---|
| 1088 | } |
---|
| 1089 | |
---|
| 1090 | // Wait for transfer to finish |
---|
| 1091 | wlan_mac_high_cdma_finish_transfer(); |
---|
| 1092 | |
---|
| 1093 | ipc_msg_to_low.msg_id = IPC_MBOX_MSG_ID(IPC_MBOX_TX_PKT_BUF_READY); |
---|
| 1094 | ipc_msg_to_low.arg0 = tx_pkt_buf; |
---|
| 1095 | ipc_msg_to_low.num_payload_words = 0; |
---|
| 1096 | |
---|
| 1097 | // Set the packet buffer state to READY |
---|
| 1098 | tx_frame_info->tx_pkt_buf_state = TX_PKT_BUF_READY; |
---|
| 1099 | |
---|
| 1100 | // Note: at this point in the code, the packet buffer state has been modified to TX_PKT_BUF_READY, |
---|
| 1101 | // yet we have not sent the IPC_MBOX_TX_PKT_BUF_READY message. If we happen to reboot here, |
---|
| 1102 | // this packet buffer will be abandoned and won't be cleaned up in the boot process. This is a narrow |
---|
| 1103 | // race in practice, but step-by-step debugging can accentuate the risk since there can be an arbitrary |
---|
| 1104 | // amount of time spent in this window. |
---|
| 1105 | |
---|
| 1106 | if(unlock_tx_pkt_buf(tx_pkt_buf) == PKT_BUF_MUTEX_FAIL_NOT_LOCK_OWNER){ |
---|
| 1107 | // The unlock failed because CPU_LOW currently has the mutex lock. We will not |
---|
| 1108 | // submit a READY message for this packet. Instead, we'll drop it and revert |
---|
| 1109 | // the state of the packet buffer to TX_PKT_BUF_HIGH_CTRL. CPU_LOW will unlock the |
---|
| 1110 | // packet buffer when it is done transmitting from it or if it reboots. At that |
---|
| 1111 | // point, we will clean up and be able to use this packet buffer again for future |
---|
| 1112 | // transmissions. |
---|
| 1113 | wlan_printf(PL_ERROR, "Error: unable to unlock tx pkt_buf %d\n",tx_pkt_buf); |
---|
| 1114 | tx_frame_info->tx_pkt_buf_state = TX_PKT_BUF_HIGH_CTRL; |
---|
| 1115 | } else { |
---|
| 1116 | // We successfully unlocked the packet buffer or we failed to unlock it because |
---|
| 1117 | // it was already unlocked. In either case, we can submit this READY message. |
---|
| 1118 | write_mailbox_msg(&ipc_msg_to_low); |
---|
| 1119 | } |
---|
| 1120 | } |
---|
| 1121 | |
---|
| 1122 | /** |
---|
| 1123 | * @brief WLAN MAC IPC processing function for CPU High |
---|
| 1124 | * |
---|
| 1125 | * Process IPC message from CPU low |
---|
| 1126 | * |
---|
| 1127 | * @param wlan_ipc_msg* msg |
---|
| 1128 | * - Pointer to the IPC message |
---|
| 1129 | * @param u32* ipc_msg_from_low_payload |
---|
| 1130 | * - Pointer to the payload of the IPC message |
---|
| 1131 | * @return None |
---|
| 1132 | */ |
---|
| 1133 | void wlan_mac_high_process_ipc_msg(wlan_ipc_msg_t* msg, u32* ipc_msg_from_low_payload) { |
---|
| 1134 | u8 rx_pkt_buf; |
---|
| 1135 | u8 tx_pkt_buf; |
---|
| 1136 | rx_frame_info_t* rx_frame_info; |
---|
| 1137 | tx_frame_info_t* tx_frame_info; |
---|
| 1138 | |
---|
| 1139 | // Determine what type of message this is |
---|
| 1140 | switch(IPC_MBOX_MSG_ID_TO_MSG(msg->msg_id)) { |
---|
| 1141 | |
---|
| 1142 | //--------------------------------------------------------------------- |
---|
| 1143 | case IPC_MBOX_TX_BEACON_DONE:{ |
---|
| 1144 | wlan_mac_low_tx_details_t* tx_low_details; |
---|
| 1145 | tx_low_entry* tx_low_event_log_entry = NULL; |
---|
| 1146 | station_info_t* station_info; |
---|
| 1147 | |
---|
| 1148 | tx_pkt_buf = msg->arg0; |
---|
| 1149 | if(tx_pkt_buf == TX_PKT_BUF_BEACON){ |
---|
| 1150 | if(lock_tx_pkt_buf(tx_pkt_buf) != PKT_BUF_MUTEX_SUCCESS){ |
---|
| 1151 | xil_printf("Error: CPU_LOW had lock on Beacon packet buffer during IPC_MBOX_TX_BEACON_DONE\n"); |
---|
| 1152 | } else { |
---|
| 1153 | tx_frame_info = (tx_frame_info_t*)CALC_PKT_BUF_ADDR(platform_common_dev_info.tx_pkt_buf_baseaddr, tx_pkt_buf); |
---|
| 1154 | tx_low_details = (wlan_mac_low_tx_details_t*)(msg->payload_ptr); |
---|
| 1155 | |
---|
| 1156 | tx_frame_info->tx_pkt_buf_state = TX_PKT_BUF_HIGH_CTRL; |
---|
| 1157 | |
---|
| 1158 | //We will pass this completed transmission off to the Station Info subsystem |
---|
| 1159 | station_info_posttx_process((void*)(CALC_PKT_BUF_ADDR(platform_common_dev_info.tx_pkt_buf_baseaddr, tx_pkt_buf))); |
---|
| 1160 | |
---|
| 1161 | #if WLAN_SW_CONFIG_ENABLE_LOGGING |
---|
| 1162 | // Log the TX low |
---|
| 1163 | tx_low_event_log_entry = wlan_exp_log_create_tx_low_entry(tx_frame_info, tx_low_details); |
---|
| 1164 | #endif |
---|
| 1165 | |
---|
| 1166 | beacon_tx_done_callback( tx_frame_info, tx_low_details, tx_low_event_log_entry ); |
---|
| 1167 | |
---|
| 1168 | // Apply latest broadcast management tx_params in case that they have changed |
---|
| 1169 | station_info = station_info_create((u8*)bcast_addr); |
---|
| 1170 | tx_frame_info->params = station_info->tx_params_mgmt; |
---|
| 1171 | |
---|
| 1172 | tx_frame_info->tx_pkt_buf_state = TX_PKT_BUF_READY; |
---|
| 1173 | if(unlock_tx_pkt_buf(tx_pkt_buf) != PKT_BUF_MUTEX_SUCCESS){ |
---|
| 1174 | xil_printf("Error: Unable to unlock Beacon packet buffer during IPC_MBOX_TX_BEACON_DONE\n"); |
---|
| 1175 | return; |
---|
| 1176 | } |
---|
| 1177 | } |
---|
| 1178 | } else { |
---|
| 1179 | xil_printf("Error: IPC_MBOX_TX_BEACON_DONE with invalid pkt buf index %d\n ", tx_pkt_buf); |
---|
| 1180 | } |
---|
| 1181 | } |
---|
| 1182 | break; |
---|
| 1183 | |
---|
| 1184 | //--------------------------------------------------------------------- |
---|
| 1185 | case IPC_MBOX_RX_PKT_BUF_READY: { |
---|
| 1186 | // CPU Low has received an MPDU addressed to this node or to the broadcast address |
---|
| 1187 | |
---|
| 1188 | station_info_t* station_info; |
---|
| 1189 | #pragma GCC diagnostic push |
---|
| 1190 | #pragma GCC diagnostic ignored "-Wunused-but-set-variable" |
---|
| 1191 | // Depending on the state of WLAN_SW_CONFIG_ENABLE_TXRX_COUNTS, this variable |
---|
| 1192 | // may be assigned but never used. We'll suppress the warning if it shows up. |
---|
| 1193 | u32 mpdu_rx_process_flags; |
---|
| 1194 | #pragma GCC diagnostic pop |
---|
| 1195 | |
---|
| 1196 | rx_common_entry* rx_event_log_entry = NULL; |
---|
| 1197 | |
---|
| 1198 | rx_pkt_buf = msg->arg0; |
---|
| 1199 | if(rx_pkt_buf < NUM_RX_PKT_BUFS){ |
---|
| 1200 | rx_frame_info = (rx_frame_info_t*)CALC_PKT_BUF_ADDR(platform_common_dev_info.rx_pkt_buf_baseaddr, rx_pkt_buf); |
---|
| 1201 | |
---|
| 1202 | switch(rx_frame_info->rx_pkt_buf_state){ |
---|
| 1203 | case RX_PKT_BUF_READY: |
---|
| 1204 | // Normal Rx process - buffer contains packet ready for de-encap and logging |
---|
| 1205 | // Attempt to lock the indicated Rx pkt buf (CPU Low must unlock it before sending this msg) |
---|
| 1206 | if(lock_rx_pkt_buf(rx_pkt_buf) != PKT_BUF_MUTEX_SUCCESS){ |
---|
| 1207 | wlan_printf(PL_ERROR, "Error: unable to lock pkt_buf %d\n", rx_pkt_buf); |
---|
| 1208 | } else { |
---|
| 1209 | |
---|
| 1210 | rx_frame_info->rx_pkt_buf_state = RX_PKT_BUF_HIGH_CTRL; |
---|
| 1211 | |
---|
| 1212 | //Before calling the user's callback, we'll pass this reception off to the BSS info subsystem so it can scrape for BSS metadata |
---|
| 1213 | network_info_rx_process((void*)(CALC_PKT_BUF_ADDR(platform_common_dev_info.rx_pkt_buf_baseaddr, rx_pkt_buf))); |
---|
| 1214 | |
---|
| 1215 | //We will also pass this reception off to the Station Info subsystem |
---|
| 1216 | station_info = station_info_postrx_process((void*)(CALC_PKT_BUF_ADDR(platform_common_dev_info.rx_pkt_buf_baseaddr, rx_pkt_buf))); |
---|
| 1217 | |
---|
| 1218 | #if WLAN_SW_CONFIG_ENABLE_LOGGING |
---|
| 1219 | //Log this RX event |
---|
| 1220 | rx_event_log_entry = wlan_exp_log_create_rx_entry(rx_frame_info); |
---|
| 1221 | #endif |
---|
| 1222 | |
---|
| 1223 | // Call the RX callback function to process the received packet |
---|
| 1224 | mpdu_rx_process_flags = mpdu_rx_callback((void*)(CALC_PKT_BUF_ADDR(platform_common_dev_info.rx_pkt_buf_baseaddr, rx_pkt_buf)), station_info, rx_event_log_entry); |
---|
| 1225 | |
---|
| 1226 | station_info_rx_process_hostname( (void*)(CALC_PKT_BUF_ADDR(platform_common_dev_info.rx_pkt_buf_baseaddr, rx_pkt_buf)), station_info ); |
---|
| 1227 | |
---|
| 1228 | #if WLAN_SW_CONFIG_ENABLE_TXRX_COUNTS |
---|
| 1229 | if( (mpdu_rx_process_flags & MAC_RX_CALLBACK_RETURN_FLAG_NO_COUNTS) == 0 ){ |
---|
| 1230 | if(mpdu_rx_process_flags & MAC_RX_CALLBACK_RETURN_FLAG_DUP){ |
---|
| 1231 | station_info_rx_process_counts((void*)(CALC_PKT_BUF_ADDR(platform_common_dev_info.rx_pkt_buf_baseaddr, rx_pkt_buf)), station_info, RX_PROCESS_COUNTS_OPTION_FLAG_IS_DUPLICATE); |
---|
| 1232 | } else { |
---|
| 1233 | station_info_rx_process_counts((void*)(CALC_PKT_BUF_ADDR(platform_common_dev_info.rx_pkt_buf_baseaddr, rx_pkt_buf)), station_info, 0); |
---|
| 1234 | } |
---|
| 1235 | } |
---|
| 1236 | #endif |
---|
| 1237 | if(unlock_rx_pkt_buf(rx_pkt_buf) != PKT_BUF_MUTEX_SUCCESS){ |
---|
| 1238 | wlan_printf(PL_ERROR, "Error: unable to unlock rx pkt_buf %d\n", rx_pkt_buf); |
---|
| 1239 | } |
---|
| 1240 | |
---|
| 1241 | // Free up the rx_pkt_buf |
---|
| 1242 | rx_frame_info->rx_pkt_buf_state = RX_PKT_BUF_LOW_CTRL; |
---|
| 1243 | } |
---|
| 1244 | break; |
---|
| 1245 | default: |
---|
| 1246 | case RX_PKT_BUF_HIGH_CTRL: |
---|
| 1247 | // Don't de-encap - just clean up and return |
---|
| 1248 | rx_frame_info->rx_pkt_buf_state = RX_PKT_BUF_LOW_CTRL; |
---|
| 1249 | case RX_PKT_BUF_UNINITIALIZED: |
---|
| 1250 | case RX_PKT_BUF_LOW_CTRL: |
---|
| 1251 | if(unlock_rx_pkt_buf(rx_pkt_buf) == PKT_BUF_MUTEX_SUCCESS){ |
---|
| 1252 | wlan_printf(PL_ERROR, "Error: state mismatch; CPU_HIGH owned the lock on rx pkt_buf %d\n", rx_pkt_buf); |
---|
| 1253 | } |
---|
| 1254 | break; |
---|
| 1255 | } |
---|
| 1256 | } else { |
---|
| 1257 | xil_printf("Error: IPC_MBOX_RX_MPDU_READY with invalid pkt buf index %d\n ", rx_pkt_buf); |
---|
| 1258 | } |
---|
| 1259 | |
---|
| 1260 | } break; |
---|
| 1261 | |
---|
| 1262 | //--------------------------------------------------------------------- |
---|
| 1263 | case IPC_MBOX_PHY_TX_REPORT: { |
---|
| 1264 | wlan_mac_low_tx_details_t* tx_low_details; |
---|
| 1265 | tx_low_entry* tx_low_event_log_entry = NULL; |
---|
| 1266 | station_info_t* station_info; |
---|
| 1267 | |
---|
| 1268 | tx_pkt_buf = msg->arg0; |
---|
| 1269 | if(tx_pkt_buf < NUM_TX_PKT_BUFS){ |
---|
| 1270 | tx_frame_info = (tx_frame_info_t*)CALC_PKT_BUF_ADDR(platform_common_dev_info.tx_pkt_buf_baseaddr, tx_pkt_buf); |
---|
| 1271 | tx_low_details = (wlan_mac_low_tx_details_t*)(msg->payload_ptr); |
---|
| 1272 | #if WLAN_SW_CONFIG_ENABLE_LOGGING |
---|
| 1273 | tx_low_event_log_entry = wlan_exp_log_create_tx_low_entry(tx_frame_info, tx_low_details); |
---|
| 1274 | #endif //WLAN_SW_CONFIG_ENABLE_LOGGING |
---|
| 1275 | station_info = station_info_txreport_process((void*)(CALC_PKT_BUF_ADDR(platform_common_dev_info.tx_pkt_buf_baseaddr, tx_pkt_buf)), tx_low_details); |
---|
| 1276 | mpdu_tx_low_done_callback(tx_frame_info, station_info, tx_low_details, tx_low_event_log_entry); |
---|
| 1277 | } |
---|
| 1278 | } |
---|
| 1279 | break; |
---|
| 1280 | |
---|
| 1281 | //--------------------------------------------------------------------- |
---|
| 1282 | case IPC_MBOX_TX_PKT_BUF_DONE: { |
---|
| 1283 | // CPU Low has finished the Tx process for the previously submitted-accepted frame |
---|
| 1284 | // CPU High should do any necessary post-processing, then recycle the packet buffer |
---|
| 1285 | // |
---|
| 1286 | |
---|
| 1287 | tx_high_entry* tx_high_event_log_entry = NULL; |
---|
| 1288 | station_info_t* station_info; |
---|
| 1289 | |
---|
| 1290 | tx_pkt_buf = msg->arg0; |
---|
| 1291 | if(tx_pkt_buf < NUM_TX_PKT_BUFS){ |
---|
| 1292 | tx_frame_info = (tx_frame_info_t*)CALC_PKT_BUF_ADDR(platform_common_dev_info.tx_pkt_buf_baseaddr, tx_pkt_buf); |
---|
| 1293 | switch(tx_frame_info->tx_pkt_buf_state){ |
---|
| 1294 | case TX_PKT_BUF_DONE: |
---|
| 1295 | // Expected state after CPU Low finishes Tx |
---|
| 1296 | // Run normal post-tx processing |
---|
| 1297 | // Lock this packet buffer |
---|
| 1298 | if(lock_tx_pkt_buf(tx_pkt_buf) != PKT_BUF_MUTEX_SUCCESS){ |
---|
| 1299 | xil_printf("Error: DONE Lock Tx Pkt Buf State Mismatch\n"); |
---|
| 1300 | tx_frame_info->tx_pkt_buf_state = TX_PKT_BUF_HIGH_CTRL; |
---|
| 1301 | return; |
---|
| 1302 | } |
---|
| 1303 | |
---|
| 1304 | //We can now attempt to dequeue any pending transmissions before we fully process |
---|
| 1305 | //this done message. |
---|
| 1306 | tx_poll_callback(); |
---|
| 1307 | |
---|
| 1308 | //We will pass this completed transmission off to the Station Info subsystem |
---|
| 1309 | station_info = station_info_posttx_process((void*)(CALC_PKT_BUF_ADDR(platform_common_dev_info.tx_pkt_buf_baseaddr, tx_pkt_buf))); |
---|
| 1310 | |
---|
| 1311 | #if WLAN_SW_CONFIG_ENABLE_LOGGING |
---|
| 1312 | // Log the high-level transmission and call the application callback |
---|
| 1313 | tx_high_event_log_entry = wlan_exp_log_create_tx_high_entry(tx_frame_info); |
---|
| 1314 | #endif //WLAN_SW_CONFIG_ENABLE_LOGGING |
---|
| 1315 | mpdu_tx_high_done_callback(tx_frame_info, station_info, tx_high_event_log_entry); |
---|
| 1316 | |
---|
| 1317 | tx_frame_info->tx_pkt_buf_state = TX_PKT_BUF_HIGH_CTRL; |
---|
| 1318 | break; |
---|
| 1319 | // Something has gone wrong - TX_DONE message disagrees |
---|
| 1320 | // with state of Tx pkt buf |
---|
| 1321 | case TX_PKT_BUF_UNINITIALIZED: |
---|
| 1322 | case TX_PKT_BUF_HIGH_CTRL: |
---|
| 1323 | // CPU High probably rebooted, initialized Tx pkt buffers |
---|
| 1324 | // then got TX_DONE message from pre-reboot |
---|
| 1325 | // Ignore the contents, force-lock the buffer, and |
---|
| 1326 | // leave it TX_PKT_BUF_HIGH_CTRL, will be used by future ping-pong rotation |
---|
| 1327 | force_lock_tx_pkt_buf(tx_pkt_buf); |
---|
| 1328 | tx_frame_info->tx_pkt_buf_state = TX_PKT_BUF_HIGH_CTRL; |
---|
| 1329 | case TX_PKT_BUF_READY: |
---|
| 1330 | case TX_PKT_BUF_LOW_CTRL: |
---|
| 1331 | //CPU Low will clean up |
---|
| 1332 | // Unlikely CPU High holds lock, but unlock just in case |
---|
| 1333 | unlock_tx_pkt_buf(tx_pkt_buf); |
---|
| 1334 | break; |
---|
| 1335 | } |
---|
| 1336 | } else { |
---|
| 1337 | xil_printf("Error: IPC_MBOX_TX_PKT_BUF_DONE with invalid pkt buf index %d\n ", tx_pkt_buf); |
---|
| 1338 | } |
---|
| 1339 | |
---|
| 1340 | } break; |
---|
| 1341 | |
---|
| 1342 | |
---|
| 1343 | //--------------------------------------------------------------------- |
---|
| 1344 | case IPC_MBOX_CPU_STATUS: |
---|
| 1345 | // CPU low's status |
---|
| 1346 | // |
---|
| 1347 | |
---|
| 1348 | // cpu_low_status isn't needed to process this IPC message since there is an explicit |
---|
| 1349 | // reason provided in the arg0 field of the message. However, we'll copy the information |
---|
| 1350 | // into the global in case any future process wants record of it. |
---|
| 1351 | cpu_low_status = ipc_msg_from_low_payload[0]; |
---|
| 1352 | |
---|
| 1353 | switch( msg->arg0 ){ |
---|
| 1354 | case CPU_STATUS_REASON_EXCEPTION: |
---|
| 1355 | wlan_printf(PL_ERROR, "ERROR: An unrecoverable exception has occurred in CPU_LOW, halting...\n"); |
---|
| 1356 | wlan_printf(PL_ERROR, " Reason code: %d\n", ipc_msg_from_low_payload[1]); |
---|
| 1357 | wlan_platform_high_userio_disp_status(USERIO_DISP_STATUS_CPU_ERROR, WLAN_ERROR_CPU_STOP); |
---|
| 1358 | break; |
---|
| 1359 | |
---|
| 1360 | case CPU_STATUS_REASON_BOOTED: |
---|
| 1361 | |
---|
| 1362 | // Notify the high-level project that CPU_LOW has rebooted |
---|
| 1363 | cpu_low_reboot_callback(ipc_msg_from_low_payload[1]); |
---|
| 1364 | |
---|
| 1365 | // Set any of low parameters that have been modified and |
---|
| 1366 | // the MAC High Framework is responsible for tracking |
---|
| 1367 | if(low_param_channel != 0xFFFFFFFF) wlan_mac_high_set_radio_channel(low_param_channel); |
---|
| 1368 | if(low_param_dsss_en != 0xFFFFFFFF) wlan_mac_high_set_dsss(low_param_dsss_en); |
---|
| 1369 | if(low_param_rx_ant_mode != 0xFF) wlan_mac_high_set_rx_ant_mode(low_param_rx_ant_mode); |
---|
| 1370 | if(low_param_tx_ctrl_pow != -127) wlan_mac_high_set_tx_ctrl_power(low_param_tx_ctrl_pow); |
---|
| 1371 | if(low_param_radio_tx_pow != -127) wlan_mac_high_set_radio_tx_power(low_param_radio_tx_pow); |
---|
| 1372 | if(low_param_rx_filter != 0xFFFFFFFF) wlan_mac_high_set_rx_filter_mode(low_param_rx_filter); |
---|
| 1373 | if(low_param_random_seed != 0xFFFFFFFF) wlan_mac_high_set_srand(low_param_random_seed); |
---|
| 1374 | |
---|
| 1375 | // Attempt to dequeue and fill any available Tx packet buffers |
---|
| 1376 | tx_poll_callback(); |
---|
| 1377 | break; |
---|
| 1378 | |
---|
| 1379 | case CPU_STATUS_REASON_RESPONSE: |
---|
| 1380 | // Set the CPU_LOW wlan_exp type |
---|
| 1381 | #if WLAN_SW_CONFIG_ENABLE_WLAN_EXP |
---|
| 1382 | { |
---|
| 1383 | compilation_details_t* compilation_details = (compilation_details_t*)(&ipc_msg_from_low_payload[2]); |
---|
| 1384 | wlan_exp_node_set_type_low(ipc_msg_from_low_payload[1], compilation_details->compilation_date, compilation_details->compilation_time); |
---|
| 1385 | } |
---|
| 1386 | #endif |
---|
| 1387 | default: |
---|
| 1388 | |
---|
| 1389 | break; |
---|
| 1390 | } |
---|
| 1391 | break; |
---|
| 1392 | |
---|
| 1393 | |
---|
| 1394 | //--------------------------------------------------------------------- |
---|
| 1395 | case IPC_MBOX_MEM_READ_WRITE: |
---|
| 1396 | // Memory Read / Write message |
---|
| 1397 | // - Allows CPU High to read / write arbitrary memory locations in CPU low |
---|
| 1398 | // |
---|
| 1399 | if(cpu_low_reg_read_buffer != NULL){ |
---|
| 1400 | memcpy( (u8*)cpu_low_reg_read_buffer, (u8*)ipc_msg_from_low_payload, (msg->num_payload_words) * sizeof(u32)); |
---|
| 1401 | cpu_low_reg_read_buffer_status = CPU_LOW_REG_READ_BUFFER_STATUS_READY; |
---|
| 1402 | |
---|
| 1403 | } else { |
---|
| 1404 | wlan_printf(PL_ERROR, "ERROR: Received low-level register buffer from CPU_LOW and was not expecting it.\n"); |
---|
| 1405 | } |
---|
| 1406 | break; |
---|
| 1407 | |
---|
| 1408 | |
---|
| 1409 | //--------------------------------------------------------------------- |
---|
| 1410 | case IPC_MBOX_LOW_PARAM: |
---|
| 1411 | // CPU Low Parameter IPC message |
---|
| 1412 | // - Processes any CPU Low Parameter IPC messages sent to CPU High |
---|
| 1413 | // - This is an error condition. CPU High should never expect this IPC message |
---|
| 1414 | // |
---|
| 1415 | // NOTE: This is due to the fact that IPC messages in CPU low can take an infinitely long amount of |
---|
| 1416 | // to return given that the sending and receiving of wireless data takes precedent. Therefore, |
---|
| 1417 | // it is not good to try to return values from CPU low since there is no guarantee when the values |
---|
| 1418 | // will be available. |
---|
| 1419 | // |
---|
| 1420 | wlan_printf(PL_ERROR, "ERROR: Received low-level parameter buffer from CPU_LOW and was not expecting it.\n"); |
---|
| 1421 | break; |
---|
| 1422 | |
---|
| 1423 | |
---|
| 1424 | //--------------------------------------------------------------------- |
---|
| 1425 | default: |
---|
| 1426 | wlan_printf(PL_ERROR, "ERROR: Unknown IPC message type %d\n", IPC_MBOX_MSG_ID_TO_MSG(msg->msg_id)); |
---|
| 1427 | break; |
---|
| 1428 | } |
---|
| 1429 | } |
---|
| 1430 | |
---|
| 1431 | |
---|
| 1432 | |
---|
| 1433 | /** |
---|
| 1434 | * @brief Set Random Seed |
---|
| 1435 | * |
---|
| 1436 | * Send an IPC message to CPU Low to set the Random Seed |
---|
| 1437 | * |
---|
| 1438 | * @param u32 seed |
---|
| 1439 | * - Random number generator seed |
---|
| 1440 | * @return None |
---|
| 1441 | */ |
---|
| 1442 | void wlan_mac_high_set_srand(u32 seed) { |
---|
| 1443 | |
---|
| 1444 | wlan_ipc_msg_t ipc_msg_to_low; |
---|
| 1445 | u32 ipc_msg_to_low_payload = seed; |
---|
| 1446 | |
---|
| 1447 | //Set tracking global |
---|
| 1448 | low_param_random_seed = seed; |
---|
| 1449 | |
---|
| 1450 | // Send message to CPU Low |
---|
| 1451 | ipc_msg_to_low.msg_id = IPC_MBOX_MSG_ID(IPC_MBOX_LOW_RANDOM_SEED); |
---|
| 1452 | ipc_msg_to_low.num_payload_words = 1; |
---|
| 1453 | ipc_msg_to_low.payload_ptr = &(ipc_msg_to_low_payload); |
---|
| 1454 | |
---|
| 1455 | write_mailbox_msg(&ipc_msg_to_low); |
---|
| 1456 | } |
---|
| 1457 | |
---|
| 1458 | |
---|
| 1459 | /** |
---|
| 1460 | * @brief Convert BSS Channel Specification to Radio Channel |
---|
| 1461 | * |
---|
| 1462 | * Converts a BSS channel specification to a radio channel |
---|
| 1463 | * for use in wlan_mac_high_set_radio_channel. When extended |
---|
| 1464 | * to support HT40, this function will grow more complex. |
---|
| 1465 | * |
---|
| 1466 | * @param chan_spec_t* chan_spec |
---|
| 1467 | * - Pointer to BSS Channel Specification |
---|
| 1468 | * @return None |
---|
| 1469 | */ |
---|
| 1470 | u8 wlan_mac_high_bss_channel_spec_to_radio_chan(chan_spec_t chan_spec) { |
---|
| 1471 | return chan_spec.chan_pri; |
---|
| 1472 | } |
---|
| 1473 | |
---|
| 1474 | /** |
---|
| 1475 | * @brief Set Radio Channel |
---|
| 1476 | * |
---|
| 1477 | * Send an IPC message to CPU Low to set the MAC Channel |
---|
| 1478 | * |
---|
| 1479 | * @param u32 mac_channel |
---|
| 1480 | * - 802.11 Channel to set |
---|
| 1481 | * @return None |
---|
| 1482 | */ |
---|
| 1483 | void wlan_mac_high_set_radio_channel(u32 mac_channel) { |
---|
| 1484 | |
---|
| 1485 | wlan_ipc_msg_t ipc_msg_to_low; |
---|
| 1486 | u32 ipc_msg_to_low_payload = mac_channel; |
---|
| 1487 | |
---|
| 1488 | if(wlan_verify_channel(mac_channel) == WLAN_SUCCESS){ |
---|
| 1489 | //Set tracking global |
---|
| 1490 | low_param_channel = mac_channel; |
---|
| 1491 | |
---|
| 1492 | // Send message to CPU Low |
---|
| 1493 | ipc_msg_to_low.msg_id = IPC_MBOX_MSG_ID(IPC_MBOX_CONFIG_CHANNEL); |
---|
| 1494 | ipc_msg_to_low.num_payload_words = 1; |
---|
| 1495 | ipc_msg_to_low.payload_ptr = &(ipc_msg_to_low_payload); |
---|
| 1496 | |
---|
| 1497 | write_mailbox_msg(&ipc_msg_to_low); |
---|
| 1498 | } else { |
---|
| 1499 | xil_printf("Channel %d not allowed\n", mac_channel); |
---|
| 1500 | } |
---|
| 1501 | } |
---|
| 1502 | |
---|
| 1503 | void wlan_mac_high_enable_mcast_buffering(u8 enable){ |
---|
| 1504 | wlan_ipc_msg_t ipc_msg_to_low; |
---|
| 1505 | |
---|
| 1506 | // Send message to CPU Low |
---|
| 1507 | ipc_msg_to_low.msg_id = IPC_MBOX_MSG_ID(IPC_MBOX_MCAST_BUFFER_ENABLE); |
---|
| 1508 | ipc_msg_to_low.num_payload_words = 0; |
---|
| 1509 | ipc_msg_to_low.arg0 = enable; |
---|
| 1510 | |
---|
| 1511 | write_mailbox_msg(&ipc_msg_to_low); |
---|
| 1512 | } |
---|
| 1513 | |
---|
| 1514 | void wlan_mac_high_config_txrx_beacon(beacon_txrx_config_t* beacon_txrx_config){ |
---|
| 1515 | wlan_ipc_msg_t ipc_msg_to_low; |
---|
| 1516 | |
---|
| 1517 | // Send message to CPU Low |
---|
| 1518 | ipc_msg_to_low.msg_id = IPC_MBOX_MSG_ID(IPC_MBOX_TXRX_BEACON_CONFIG); |
---|
| 1519 | ipc_msg_to_low.num_payload_words = sizeof(beacon_txrx_config_t)/sizeof(u32); |
---|
| 1520 | ipc_msg_to_low.payload_ptr = (u32*)beacon_txrx_config; |
---|
| 1521 | |
---|
| 1522 | write_mailbox_msg(&ipc_msg_to_low); |
---|
| 1523 | |
---|
| 1524 | } |
---|
| 1525 | |
---|
| 1526 | /** |
---|
| 1527 | * @brief Set Rx Antenna Mode |
---|
| 1528 | * |
---|
| 1529 | * Send an IPC message to CPU Low to set the Rx antenna mode. |
---|
| 1530 | * |
---|
| 1531 | * @param u8 ant_mode |
---|
| 1532 | * - Antenna mode selection |
---|
| 1533 | * @return None |
---|
| 1534 | */ |
---|
| 1535 | void wlan_mac_high_set_rx_ant_mode(u8 ant_mode) { |
---|
| 1536 | wlan_ipc_msg_t ipc_msg_to_low; |
---|
| 1537 | u32 ipc_msg_to_low_payload = (u32)ant_mode; |
---|
| 1538 | |
---|
| 1539 | //Sanity check input |
---|
| 1540 | switch(ant_mode){ |
---|
| 1541 | case RX_ANTMODE_SISO_ANTA: |
---|
| 1542 | case RX_ANTMODE_SISO_ANTB: |
---|
| 1543 | case RX_ANTMODE_SISO_ANTC: |
---|
| 1544 | case RX_ANTMODE_SISO_ANTD: |
---|
| 1545 | case RX_ANTMODE_SISO_SELDIV_2ANT: |
---|
| 1546 | //Set tracking global |
---|
| 1547 | low_param_rx_ant_mode = ant_mode; |
---|
| 1548 | break; |
---|
| 1549 | default: |
---|
| 1550 | xil_printf("Error: unsupported antenna mode %x\n", ant_mode); |
---|
| 1551 | return; |
---|
| 1552 | break; |
---|
| 1553 | } |
---|
| 1554 | |
---|
| 1555 | // Send message to CPU Low |
---|
| 1556 | ipc_msg_to_low.msg_id = IPC_MBOX_MSG_ID(IPC_MBOX_CONFIG_RX_ANT_MODE); |
---|
| 1557 | ipc_msg_to_low.num_payload_words = 1; |
---|
| 1558 | ipc_msg_to_low.payload_ptr = &(ipc_msg_to_low_payload); |
---|
| 1559 | |
---|
| 1560 | write_mailbox_msg(&ipc_msg_to_low); |
---|
| 1561 | } |
---|
| 1562 | |
---|
| 1563 | |
---|
| 1564 | |
---|
| 1565 | /** |
---|
| 1566 | * @brief Set Tx Control Packet Power |
---|
| 1567 | * |
---|
| 1568 | * Send an IPC message to CPU Low to set the Tx control packet power |
---|
| 1569 | * |
---|
| 1570 | * @param s8 pow |
---|
| 1571 | * - Tx control packet power in dBm |
---|
| 1572 | * @return None |
---|
| 1573 | */ |
---|
| 1574 | void wlan_mac_high_set_tx_ctrl_power(s8 pow) { |
---|
| 1575 | |
---|
| 1576 | wlan_ipc_msg_t ipc_msg_to_low; |
---|
| 1577 | u32 ipc_msg_to_low_payload = (u32)pow; |
---|
| 1578 | |
---|
| 1579 | //Set tracking global |
---|
| 1580 | low_param_tx_ctrl_pow = pow; |
---|
| 1581 | |
---|
| 1582 | // Send message to CPU Low |
---|
| 1583 | ipc_msg_to_low.msg_id = IPC_MBOX_MSG_ID(IPC_MBOX_CONFIG_TX_CTRL_POW); |
---|
| 1584 | ipc_msg_to_low.num_payload_words = 1; |
---|
| 1585 | ipc_msg_to_low.payload_ptr = &(ipc_msg_to_low_payload); |
---|
| 1586 | |
---|
| 1587 | write_mailbox_msg(&ipc_msg_to_low); |
---|
| 1588 | } |
---|
| 1589 | |
---|
| 1590 | /** |
---|
| 1591 | * @brief Set Tx Control Packet Power |
---|
| 1592 | * |
---|
| 1593 | * Send an IPC message to CPU Low to set the radio's Tx power; applies to |
---|
| 1594 | * platforms which do not support per-packet Tx power control |
---|
| 1595 | * |
---|
| 1596 | * @param s8 pow |
---|
| 1597 | * - Tx power in dBm |
---|
| 1598 | * @return None |
---|
| 1599 | */ |
---|
| 1600 | void wlan_mac_high_set_radio_tx_power(s8 pow) { |
---|
| 1601 | wlan_ipc_msg_t ipc_msg_to_low; |
---|
| 1602 | u32 ipc_msg_to_low_payload = (u32)pow; |
---|
| 1603 | |
---|
| 1604 | //Set tracking global |
---|
| 1605 | low_param_radio_tx_pow = pow; |
---|
| 1606 | |
---|
| 1607 | // Send message to CPU Low |
---|
| 1608 | ipc_msg_to_low.msg_id = IPC_MBOX_MSG_ID(IPC_MBOX_SET_RADIO_TX_POWER); |
---|
| 1609 | ipc_msg_to_low.num_payload_words = 1; |
---|
| 1610 | ipc_msg_to_low.payload_ptr = &(ipc_msg_to_low_payload); |
---|
| 1611 | |
---|
| 1612 | write_mailbox_msg(&ipc_msg_to_low); |
---|
| 1613 | } |
---|
| 1614 | |
---|
| 1615 | |
---|
| 1616 | |
---|
| 1617 | /** |
---|
| 1618 | * @brief Set Rx Filter |
---|
| 1619 | * |
---|
| 1620 | * Send an IPC message to CPU Low to set the filter for receptions. This will |
---|
| 1621 | * allow or disallow different packets from being passed up to CPU_High |
---|
| 1622 | * |
---|
| 1623 | * @param filter_mode |
---|
| 1624 | * - RX_FILTER_FCS_GOOD |
---|
| 1625 | * - RX_FILTER_FCS_ALL |
---|
| 1626 | * - RX_FILTER_ADDR_STANDARD (unicast to me or multicast) |
---|
| 1627 | * - RX_FILTER_ADDR_ALL_MPDU (all MPDU frames to any address) |
---|
| 1628 | * - RX_FILTER_ADDR_ALL (all observed frames, including control) |
---|
| 1629 | * |
---|
| 1630 | * @note FCS and ADDR filter selections must be bit-wise ORed together. For example, |
---|
| 1631 | * wlan_mac_high_set_rx_filter_mode(RX_FILTER_FCS_ALL | RX_FILTER_ADDR_ALL) |
---|
| 1632 | * |
---|
| 1633 | * @return None |
---|
| 1634 | */ |
---|
| 1635 | void wlan_mac_high_set_rx_filter_mode(u32 filter_mode) { |
---|
| 1636 | |
---|
| 1637 | wlan_ipc_msg_t ipc_msg_to_low; |
---|
| 1638 | u32 ipc_msg_to_low_payload = (u32)filter_mode; |
---|
| 1639 | |
---|
| 1640 | //Set tracking global |
---|
| 1641 | low_param_rx_filter = filter_mode; |
---|
| 1642 | |
---|
| 1643 | // Send message to CPU Low |
---|
| 1644 | ipc_msg_to_low.msg_id = IPC_MBOX_MSG_ID(IPC_MBOX_CONFIG_RX_FILTER); |
---|
| 1645 | ipc_msg_to_low.num_payload_words = 1; |
---|
| 1646 | ipc_msg_to_low.payload_ptr = &(ipc_msg_to_low_payload); |
---|
| 1647 | |
---|
| 1648 | write_mailbox_msg(&ipc_msg_to_low); |
---|
| 1649 | } |
---|
| 1650 | |
---|
| 1651 | |
---|
| 1652 | |
---|
| 1653 | /** |
---|
| 1654 | * @brief Write a memory location in CPU low |
---|
| 1655 | * |
---|
| 1656 | * Send an IPC message to CPU Low to write the given data |
---|
| 1657 | * |
---|
| 1658 | * @param u32 num_words - Number of words in the message payload |
---|
| 1659 | * @param u32* payload - Pointer to the message payload |
---|
| 1660 | * |
---|
| 1661 | * @return int - WLAN_SUCCESS or WLAN_FAILURE |
---|
| 1662 | */ |
---|
| 1663 | int wlan_mac_high_write_low_mem(u32 num_words, u32* payload) { |
---|
| 1664 | wlan_ipc_msg_t ipc_msg_to_low; |
---|
| 1665 | |
---|
| 1666 | if (num_words > MAILBOX_MSG_MAX_NUM_WORDS) { |
---|
| 1667 | xil_printf("ERROR: attempted to send LOW_PARAM IPC message with oversize payload! (%d > %d)\n", num_words, MAILBOX_MSG_MAX_NUM_WORDS); |
---|
| 1668 | return WLAN_FAILURE; |
---|
| 1669 | } |
---|
| 1670 | |
---|
| 1671 | // Send message to CPU Low |
---|
| 1672 | ipc_msg_to_low.msg_id = IPC_MBOX_MSG_ID(IPC_MBOX_MEM_READ_WRITE); |
---|
| 1673 | ipc_msg_to_low.num_payload_words = num_words; |
---|
| 1674 | ipc_msg_to_low.arg0 = IPC_REG_WRITE_MODE; |
---|
| 1675 | ipc_msg_to_low.payload_ptr = payload; |
---|
| 1676 | |
---|
| 1677 | write_mailbox_msg(&ipc_msg_to_low); |
---|
| 1678 | |
---|
| 1679 | return WLAN_SUCCESS; |
---|
| 1680 | } |
---|
| 1681 | |
---|
| 1682 | |
---|
| 1683 | |
---|
| 1684 | /** |
---|
| 1685 | * @brief Read a memory location in CPU low |
---|
| 1686 | * |
---|
| 1687 | * Send an IPC message to CPU Low to read the given data |
---|
| 1688 | * |
---|
| 1689 | * @param u32 num_words - Number of words to read from CPU low |
---|
| 1690 | * @param u32 baseaddr - Base address of the data to read from CPU low |
---|
| 1691 | * @param u32* payload - Pointer to the buffer to be populated with data |
---|
| 1692 | * |
---|
| 1693 | * @return int - WLAN_SUCCESS or WLAN_FAILURE |
---|
| 1694 | */ |
---|
| 1695 | int wlan_mac_high_read_low_mem(u32 num_words, u32 baseaddr, u32* payload) { |
---|
| 1696 | |
---|
| 1697 | u64 start_timestamp; |
---|
| 1698 | wlan_ipc_msg_t ipc_msg_to_low; |
---|
| 1699 | ipc_reg_read_write_t ipc_msg_to_low_payload; |
---|
| 1700 | |
---|
| 1701 | if(wlan_platform_intc_get_state() == INTERRUPTS_ENABLED) { |
---|
| 1702 | // Send message to CPU Low |
---|
| 1703 | ipc_msg_to_low.msg_id = IPC_MBOX_MSG_ID(IPC_MBOX_MEM_READ_WRITE); |
---|
| 1704 | ipc_msg_to_low.num_payload_words = sizeof(ipc_reg_read_write_t) / sizeof(u32); |
---|
| 1705 | ipc_msg_to_low.arg0 = IPC_REG_READ_MODE; |
---|
| 1706 | ipc_msg_to_low.payload_ptr = (u32*)(&(ipc_msg_to_low_payload)); |
---|
| 1707 | |
---|
| 1708 | ipc_msg_to_low_payload.baseaddr = baseaddr; |
---|
| 1709 | ipc_msg_to_low_payload.num_words = num_words; |
---|
| 1710 | |
---|
| 1711 | // Set the read buffer to the payload pointer |
---|
| 1712 | cpu_low_reg_read_buffer = payload; |
---|
| 1713 | cpu_low_reg_read_buffer_status = CPU_LOW_REG_READ_BUFFER_STATUS_NOT_READY; |
---|
| 1714 | |
---|
| 1715 | write_mailbox_msg(&ipc_msg_to_low); |
---|
| 1716 | |
---|
| 1717 | // Get start time |
---|
| 1718 | start_timestamp = get_system_time_usec(); |
---|
| 1719 | |
---|
| 1720 | // Wait for CPU low to finish the read or timeout to occur |
---|
| 1721 | while(cpu_low_reg_read_buffer_status != CPU_LOW_REG_READ_BUFFER_STATUS_READY){ |
---|
| 1722 | if ((get_system_time_usec() - start_timestamp) > WLAN_EXP_CPU_LOW_DATA_REQ_TIMEOUT) { |
---|
| 1723 | xil_printf("Error: Reading CPU_LOW memory timed out\n"); |
---|
| 1724 | |
---|
| 1725 | // Reset the read buffer |
---|
| 1726 | cpu_low_reg_read_buffer = NULL; |
---|
| 1727 | |
---|
| 1728 | return WLAN_FAILURE; |
---|
| 1729 | } |
---|
| 1730 | } |
---|
| 1731 | |
---|
| 1732 | // Reset the read buffer |
---|
| 1733 | cpu_low_reg_read_buffer = NULL; |
---|
| 1734 | |
---|
| 1735 | } else { |
---|
| 1736 | xil_printf("ERROR (wlan_mac_high_read_low_mem): cannot read low memory when interrupts are disabled\n"); |
---|
| 1737 | return WLAN_FAILURE; |
---|
| 1738 | } |
---|
| 1739 | |
---|
| 1740 | return WLAN_SUCCESS; |
---|
| 1741 | } |
---|
| 1742 | |
---|
| 1743 | |
---|
| 1744 | |
---|
| 1745 | /** |
---|
| 1746 | * @brief Write a parameter in CPU low |
---|
| 1747 | * |
---|
| 1748 | * Send an IPC message to CPU Low to write the given parameter |
---|
| 1749 | * |
---|
| 1750 | * @param u32 num_words - Number of words in the message payload |
---|
| 1751 | * @param u32 * payload - Pointer to the message payload (includes parameter ID) |
---|
| 1752 | * |
---|
| 1753 | * @return int - WLAN_SUCCESS or WLAN_FAILURE |
---|
| 1754 | */ |
---|
| 1755 | int wlan_mac_high_write_low_param(u32 num_words, u32* payload) { |
---|
| 1756 | wlan_ipc_msg_t ipc_msg_to_low; |
---|
| 1757 | |
---|
| 1758 | if (num_words > MAILBOX_MSG_MAX_NUM_WORDS) { |
---|
| 1759 | xil_printf("ERROR: attempted to send LOW_PARAM IPC message with oversize payload! (%d > %d)\n", num_words, MAILBOX_MSG_MAX_NUM_WORDS); |
---|
| 1760 | return WLAN_FAILURE; |
---|
| 1761 | } |
---|
| 1762 | |
---|
| 1763 | // Send message to CPU Low |
---|
| 1764 | ipc_msg_to_low.msg_id = IPC_MBOX_MSG_ID(IPC_MBOX_LOW_PARAM); |
---|
| 1765 | ipc_msg_to_low.num_payload_words = num_words; |
---|
| 1766 | ipc_msg_to_low.arg0 = IPC_REG_WRITE_MODE; |
---|
| 1767 | ipc_msg_to_low.payload_ptr = payload; |
---|
| 1768 | |
---|
| 1769 | write_mailbox_msg(&ipc_msg_to_low); |
---|
| 1770 | |
---|
| 1771 | return WLAN_SUCCESS; |
---|
| 1772 | } |
---|
| 1773 | |
---|
| 1774 | |
---|
| 1775 | |
---|
| 1776 | /** |
---|
| 1777 | * @brief Enable/Disable DSSS |
---|
| 1778 | * |
---|
| 1779 | * Send an IPC message to CPU Low to set the DSSS value |
---|
| 1780 | * |
---|
| 1781 | * @param u32 dsss_value |
---|
| 1782 | * - DSSS Enable/Disable value |
---|
| 1783 | * @return None |
---|
| 1784 | */ |
---|
| 1785 | void wlan_mac_high_set_dsss(u32 dsss_value) { |
---|
| 1786 | |
---|
| 1787 | wlan_ipc_msg_t ipc_msg_to_low; |
---|
| 1788 | u32 ipc_msg_to_low_payload = dsss_value; |
---|
| 1789 | |
---|
| 1790 | //Set tracking global |
---|
| 1791 | low_param_dsss_en = dsss_value; |
---|
| 1792 | |
---|
| 1793 | // Send message to CPU Low |
---|
| 1794 | ipc_msg_to_low.msg_id = IPC_MBOX_MSG_ID(IPC_MBOX_CONFIG_DSSS_EN); |
---|
| 1795 | ipc_msg_to_low.num_payload_words = 1; |
---|
| 1796 | ipc_msg_to_low.payload_ptr = &(ipc_msg_to_low_payload); |
---|
| 1797 | |
---|
| 1798 | write_mailbox_msg(&ipc_msg_to_low); |
---|
| 1799 | } |
---|
| 1800 | |
---|
| 1801 | |
---|
| 1802 | |
---|
| 1803 | /** |
---|
| 1804 | * @brief Get CPU low's state |
---|
| 1805 | * |
---|
| 1806 | * Send an IPC message to CPU Low to get its state |
---|
| 1807 | * |
---|
| 1808 | * @param None |
---|
| 1809 | * @return None |
---|
| 1810 | */ |
---|
| 1811 | void wlan_mac_high_request_low_state(){ |
---|
| 1812 | wlan_ipc_msg_t ipc_msg_to_low; |
---|
| 1813 | |
---|
| 1814 | // Send message to CPU Low |
---|
| 1815 | ipc_msg_to_low.msg_id = IPC_MBOX_MSG_ID(IPC_MBOX_CPU_STATUS); |
---|
| 1816 | ipc_msg_to_low.num_payload_words = 0; |
---|
| 1817 | ipc_msg_to_low.arg0 = (u8)CPU_STATUS_REASON_BOOTED; |
---|
| 1818 | |
---|
| 1819 | write_mailbox_msg(&ipc_msg_to_low); |
---|
| 1820 | } |
---|
| 1821 | |
---|
| 1822 | |
---|
| 1823 | /** |
---|
| 1824 | * @brief Check that CPU low is initialized |
---|
| 1825 | * |
---|
| 1826 | * @param None |
---|
| 1827 | * @return int |
---|
| 1828 | * - 0 if CPU low is not initialized |
---|
| 1829 | * - 1 if CPU low is initialized |
---|
| 1830 | */ |
---|
| 1831 | int wlan_mac_high_is_cpu_low_initialized(){ |
---|
| 1832 | wlan_mac_high_ipc_rx(); |
---|
| 1833 | return ( (cpu_low_status & CPU_STATUS_INITIALIZED) != 0 ); |
---|
| 1834 | } |
---|
| 1835 | |
---|
| 1836 | /** |
---|
| 1837 | * @brief Check the number of available tx packet buffers for an available group |
---|
| 1838 | * |
---|
| 1839 | * @param pkt_buf_group_t pkt_buf_group |
---|
| 1840 | * @return int |
---|
| 1841 | * - number of tx packet buffers that can be filled |
---|
| 1842 | */ |
---|
| 1843 | inline u8 wlan_mac_num_tx_pkt_buf_available(pkt_buf_group_t pkt_buf_group) { |
---|
| 1844 | |
---|
| 1845 | u8 i, num_empty, num_low_owned; |
---|
| 1846 | tx_frame_info_t* tx_frame_info; |
---|
| 1847 | |
---|
| 1848 | num_empty = 0; |
---|
| 1849 | num_low_owned = 0; |
---|
| 1850 | |
---|
| 1851 | for( i = 0; i < NUM_TX_PKT_BUF_MPDU; i++ ) { |
---|
| 1852 | tx_frame_info = (tx_frame_info_t*)CALC_PKT_BUF_ADDR(platform_common_dev_info.tx_pkt_buf_baseaddr, i); |
---|
| 1853 | |
---|
| 1854 | if( tx_frame_info->tx_pkt_buf_state == TX_PKT_BUF_HIGH_CTRL ) { |
---|
| 1855 | num_empty++; |
---|
| 1856 | } |
---|
| 1857 | |
---|
| 1858 | if( (tx_frame_info->queue_info.pkt_buf_group == pkt_buf_group) && |
---|
| 1859 | ( (tx_frame_info->tx_pkt_buf_state == TX_PKT_BUF_READY) || |
---|
| 1860 | (tx_frame_info->tx_pkt_buf_state == TX_PKT_BUF_LOW_CTRL))) { |
---|
| 1861 | num_low_owned++; |
---|
| 1862 | } |
---|
| 1863 | } |
---|
| 1864 | |
---|
| 1865 | // The first requirement for being allowed to dequeue is that there is at least one empty packet buffer. |
---|
| 1866 | |
---|
| 1867 | // The second requirement for being allowed to dequeue is that no more than one packet buffer is currently |
---|
| 1868 | // in the TX_PKT_BUF_READY or TX_PKT_BUF_LOW_CTRL for pkt_buf_group of PKT_BUF_GROUP_GENERAL and no more than two |
---|
| 1869 | // for PKT_BUF_GROUP_DTIM_MCAST |
---|
| 1870 | |
---|
| 1871 | if(num_empty == 0) { |
---|
| 1872 | return 0; |
---|
| 1873 | } |
---|
| 1874 | |
---|
| 1875 | if(pkt_buf_group==PKT_BUF_GROUP_GENERAL) { |
---|
| 1876 | if(num_low_owned > 2) { |
---|
| 1877 | // Should never happen - clip to 2 to restore sanity from here on |
---|
| 1878 | xil_printf("WARNING: wlan_mac_num_tx_pkt_buf_available found %d GENERAL buffers owned by low!\n", num_low_owned); |
---|
| 1879 | num_low_owned = 2; |
---|
| 1880 | } |
---|
| 1881 | |
---|
| 1882 | // Return 1 (if one buffer is already filled) or 2 (if both can be filled) |
---|
| 1883 | return WLAN_MIN(num_empty, (2 - num_low_owned)); |
---|
| 1884 | |
---|
| 1885 | } else if(pkt_buf_group==PKT_BUF_GROUP_DTIM_MCAST) { |
---|
| 1886 | if(num_low_owned > 3) { |
---|
| 1887 | // Should never happen - clip to 3 to restore sanity from here on |
---|
| 1888 | xil_printf("WARNING: wlan_mac_num_tx_pkt_buf_available found %d DTIM_MCAST buffers owned by low!\n", num_low_owned); |
---|
| 1889 | num_low_owned = 3; |
---|
| 1890 | } |
---|
| 1891 | |
---|
| 1892 | // Return 3 if all buffers are available, otherwise 1 or 2 |
---|
| 1893 | return WLAN_MIN(num_empty, (3 - num_low_owned)); |
---|
| 1894 | |
---|
| 1895 | } else { |
---|
| 1896 | // Invalid packet buffer group |
---|
| 1897 | return 0; |
---|
| 1898 | } |
---|
| 1899 | |
---|
| 1900 | } |
---|
| 1901 | |
---|
| 1902 | |
---|
| 1903 | |
---|
| 1904 | /** |
---|
| 1905 | * @brief Return the index of the next free transmit packet buffer |
---|
| 1906 | * |
---|
| 1907 | * @param None |
---|
| 1908 | * @return int |
---|
| 1909 | * - packet buffer index of free, now-locked packet buffer |
---|
| 1910 | * - -1 if there are no free Tx packet buffers |
---|
| 1911 | */ |
---|
| 1912 | int wlan_mac_high_get_empty_tx_packet_buffer(){ |
---|
| 1913 | |
---|
| 1914 | //TODO: Debate: This function assumes that it is currently safe to take control |
---|
| 1915 | // of an empty Tx packet buffer. In other words, it is the responsibility of the |
---|
| 1916 | // the calling function to ensure that wlan_mac_is_tx_pkt_buf_available() == 1. |
---|
| 1917 | // For extra safety, we could call wlan_mac_is_tx_pkt_buf_available() here at the |
---|
| 1918 | // expensive of another search through the three packet buffers. |
---|
| 1919 | |
---|
| 1920 | u8 i; |
---|
| 1921 | int pkt_buf_sel = -1; |
---|
| 1922 | |
---|
| 1923 | for( i = 0; i < NUM_TX_PKT_BUF_MPDU; i++ ){ |
---|
| 1924 | if( ((tx_frame_info_t*)CALC_PKT_BUF_ADDR(platform_common_dev_info.tx_pkt_buf_baseaddr, i))->tx_pkt_buf_state == TX_PKT_BUF_HIGH_CTRL ){ |
---|
| 1925 | pkt_buf_sel = i; |
---|
| 1926 | break; |
---|
| 1927 | } |
---|
| 1928 | } |
---|
| 1929 | return pkt_buf_sel; |
---|
| 1930 | } |
---|
| 1931 | |
---|
| 1932 | /** |
---|
| 1933 | * @brief Determine if Packet is LTG |
---|
| 1934 | * This function inspects the payload of the packet provided as an argument |
---|
| 1935 | * and searches for the LTG-specific LLC header. If it finds such a header, |
---|
| 1936 | * it returns a 1. |
---|
| 1937 | * |
---|
| 1938 | * @param None |
---|
| 1939 | * @return u8 |
---|
| 1940 | * - 1 if LTG |
---|
| 1941 | * - 0 if not LTG |
---|
| 1942 | */ |
---|
| 1943 | u8 wlan_mac_high_is_pkt_ltg(void* mac_payload, u16 length){ |
---|
| 1944 | |
---|
| 1945 | mac_header_80211* hdr_80211; |
---|
| 1946 | llc_header_t* llc_hdr; |
---|
| 1947 | |
---|
| 1948 | hdr_80211 = (mac_header_80211*)((void*)mac_payload); |
---|
| 1949 | |
---|
| 1950 | if((hdr_80211->frame_control_1 & 0xF) == MAC_FRAME_CTRL1_TYPE_DATA) { |
---|
| 1951 | |
---|
| 1952 | //Check if this is an encrypted packet. If it is, we can't trust any of the MPDU |
---|
| 1953 | //payload bytes for further classification |
---|
| 1954 | if(hdr_80211->frame_control_2 & MAC_FRAME_CTRL2_FLAG_PROTECTED){ |
---|
| 1955 | return 0; |
---|
| 1956 | } |
---|
| 1957 | |
---|
| 1958 | llc_hdr = (llc_header_t*)((u8*)mac_payload + sizeof(mac_header_80211)); |
---|
| 1959 | |
---|
| 1960 | if(length < (sizeof(mac_header_80211) + sizeof(llc_header_t) + WLAN_PHY_FCS_NBYTES)){ |
---|
| 1961 | // This was a DATA packet, but it wasn't long enough to have an LLC header. |
---|
| 1962 | return 0; |
---|
| 1963 | |
---|
| 1964 | } else { |
---|
| 1965 | if(llc_hdr->type == LLC_TYPE_WLAN_LTG){ |
---|
| 1966 | return 1; |
---|
| 1967 | } |
---|
| 1968 | } |
---|
| 1969 | } |
---|
| 1970 | |
---|
| 1971 | return 0; |
---|
| 1972 | } |
---|
| 1973 | |
---|
| 1974 | |
---|
| 1975 | |
---|
| 1976 | /** |
---|
| 1977 | * @brief Configure Beacon Transmissions |
---|
| 1978 | * |
---|
| 1979 | * This function will create a beacon and inform CPU_LOW to transmit it periodically. |
---|
| 1980 | * |
---|
| 1981 | */ |
---|
| 1982 | |
---|
| 1983 | int wlan_mac_high_configure_beacon_tx_template(u8* addr1, |
---|
| 1984 | u8* addr2, |
---|
| 1985 | u8* addr3, |
---|
| 1986 | network_info_t* network_info, |
---|
| 1987 | tx_params_t* tx_params_ptr, |
---|
| 1988 | u8 flags) { |
---|
| 1989 | u16 tx_length; |
---|
| 1990 | |
---|
| 1991 | tx_frame_info_t* tx_frame_info = (tx_frame_info_t*)CALC_PKT_BUF_ADDR(platform_common_dev_info.tx_pkt_buf_baseaddr, TX_PKT_BUF_BEACON); |
---|
| 1992 | if(lock_tx_pkt_buf(TX_PKT_BUF_BEACON) != PKT_BUF_MUTEX_SUCCESS){ |
---|
| 1993 | xil_printf("Error: CPU_LOW had lock on Beacon packet buffer during initial configuration\n"); |
---|
| 1994 | return WLAN_FAILURE; |
---|
| 1995 | } |
---|
| 1996 | |
---|
| 1997 | // Fill in the data |
---|
| 1998 | tx_length = wlan_create_beacon_frame( (u8*)(tx_frame_info)+PHY_TX_PKT_BUF_MPDU_OFFSET, |
---|
| 1999 | addr1, |
---|
| 2000 | addr2, |
---|
| 2001 | addr3, |
---|
| 2002 | network_info); |
---|
| 2003 | |
---|
| 2004 | bzero(tx_frame_info, sizeof(tx_frame_info_t)); |
---|
| 2005 | |
---|
| 2006 | // Set up frame info data |
---|
| 2007 | tx_frame_info->queue_info.enqueue_timestamp = get_mac_time_usec(); |
---|
| 2008 | tx_frame_info->length = tx_length; |
---|
| 2009 | tx_frame_info->flags = flags; |
---|
| 2010 | tx_frame_info->queue_info.id = 0xFF; |
---|
| 2011 | tx_frame_info->queue_info.pkt_buf_group = PKT_BUF_GROUP_OTHER; |
---|
| 2012 | tx_frame_info->queue_info.occupancy = 0; |
---|
| 2013 | |
---|
| 2014 | |
---|
| 2015 | // Unique_seq will be filled in by CPU_LOW |
---|
| 2016 | tx_frame_info->unique_seq = 0; |
---|
| 2017 | |
---|
| 2018 | memcpy(&(tx_frame_info->params), tx_params_ptr, sizeof(tx_params_t)); |
---|
| 2019 | |
---|
| 2020 | tx_frame_info->tx_pkt_buf_state = TX_PKT_BUF_READY; |
---|
| 2021 | if(unlock_tx_pkt_buf(TX_PKT_BUF_BEACON) != PKT_BUF_MUTEX_SUCCESS){ |
---|
| 2022 | xil_printf("Error: Unable to unlock Beacon packet buffer during initial configuration\n"); |
---|
| 2023 | return WLAN_FAILURE; |
---|
| 2024 | } |
---|
| 2025 | |
---|
| 2026 | return WLAN_SUCCESS; |
---|
| 2027 | } |
---|
| 2028 | |
---|
| 2029 | |
---|
| 2030 | |
---|
| 2031 | /** |
---|
| 2032 | * @brief Update Beacon TX parameters |
---|
| 2033 | * |
---|
| 2034 | * This function will update the beacon template in the packet buffer with the |
---|
| 2035 | * new TX parameters. |
---|
| 2036 | * |
---|
| 2037 | * This function should be used inside a while loop in order to make sure that |
---|
| 2038 | * the update is successful: |
---|
| 2039 | * while (wlan_mac_high_update_beacon_tx_params(&default_multicast_mgmt_tx_params) != 0) {} |
---|
| 2040 | * |
---|
| 2041 | * @param tx_params_ptr - Pointer to tx_params_t structure with new parameters |
---|
| 2042 | * @return status - WLAN_SUCCESS or WLAN_FAILURE |
---|
| 2043 | */ |
---|
| 2044 | int wlan_mac_high_update_beacon_tx_params(tx_params_t* tx_params_ptr) { |
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| 2045 | tx_frame_info_t* tx_frame_info = (tx_frame_info_t*)CALC_PKT_BUF_ADDR(platform_common_dev_info.tx_pkt_buf_baseaddr, TX_PKT_BUF_BEACON); |
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| 2046 | |
---|
| 2047 | if (lock_tx_pkt_buf(TX_PKT_BUF_BEACON) != PKT_BUF_MUTEX_SUCCESS) { |
---|
| 2048 | xil_printf("Error: CPU_LOW had lock on Beacon packet buffer during initial configuration\n"); |
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| 2049 | return WLAN_FAILURE; |
---|
| 2050 | } |
---|
| 2051 | |
---|
| 2052 | memcpy(&(tx_frame_info->params), tx_params_ptr, sizeof(tx_params_t)); |
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| 2053 | |
---|
| 2054 | if (unlock_tx_pkt_buf(TX_PKT_BUF_BEACON) != PKT_BUF_MUTEX_SUCCESS) { |
---|
| 2055 | xil_printf("Error: Unable to unlock Beacon packet buffer during initial configuration\n"); |
---|
| 2056 | return WLAN_FAILURE; |
---|
| 2057 | } |
---|
| 2058 | |
---|
| 2059 | return WLAN_SUCCESS; |
---|
| 2060 | } |
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| 2061 | |
---|
| 2062 | void wlan_mac_sanitize_tx_params(station_info_t* station_info, tx_params_t* tx_params){ |
---|
| 2063 | |
---|
| 2064 | // Adjust MCS and PHY_MODE based upon STATION_INFO_CAPABILITIES_HT_CAPABLE flag |
---|
| 2065 | // Requested HT MCS: 0 1 2 3 4 5 6 7 |
---|
| 2066 | // Actual NONHT MCS: 0 2 3 4 5 6 7 7 |
---|
| 2067 | |
---|
| 2068 | if (station_info->capabilities & STATION_INFO_CAPABILITIES_HT_CAPABLE) { |
---|
| 2069 | // Station is capable of HTMF waveforms -- no need to modify tx_params_ret |
---|
| 2070 | } else { |
---|
| 2071 | if (tx_params->phy.phy_mode == PHY_MODE_HTMF) { |
---|
| 2072 | // Requested rate was HT, adjust the MCS corresponding to the table above |
---|
| 2073 | tx_params->phy.phy_mode = PHY_MODE_NONHT; |
---|
| 2074 | if ((tx_params->phy.mcs == 0) || (tx_params->phy.mcs == 7)) { |
---|
| 2075 | // Do nothing - HT MCS[0,7] map to NONHT[0,7] |
---|
| 2076 | } else { |
---|
| 2077 | tx_params->phy.mcs = tx_params->phy.mcs + 1; |
---|
| 2078 | } |
---|
| 2079 | } else { |
---|
| 2080 | // Requested rate was non-HT, so do not adjust MCS |
---|
| 2081 | } |
---|
| 2082 | } |
---|
| 2083 | return; |
---|
| 2084 | } |
---|
| 2085 | |
---|
| 2086 | inline void wlan_mac_poll(){ |
---|
| 2087 | // Poll the platform in case any I/O is not interrupt-based |
---|
| 2088 | wlan_platform_high_poll(); |
---|
| 2089 | |
---|
| 2090 | #if WLAN_SW_CONFIG_ENABLE_WLAN_EXP |
---|
| 2091 | // Poll received, filtered UDP frames for wlan_exp |
---|
| 2092 | wlan_exp_transport_poll(); |
---|
| 2093 | #endif |
---|
| 2094 | } |
---|
| 2095 | |
---|
| 2096 | int wlan_mac_enqueue_wireless_tx(u16 queue_id, dl_entry* queue_entry){ |
---|
| 2097 | int status; |
---|
| 2098 | |
---|
| 2099 | if (queue_enqueue_allowed(queue_id) == 0){ |
---|
| 2100 | xil_printf("ERROR (wlan_mac_enqueue_wireless_tx): queue_id %d enqueue rejected\n", queue_id); |
---|
| 2101 | return WLAN_FAILURE; |
---|
| 2102 | } |
---|
| 2103 | |
---|
| 2104 | // Update the occupancy of the tx queue for the tx_queue_element |
---|
| 2105 | // NOTE: This is the best place to record this value since it will catch all cases. However, |
---|
| 2106 | // when populating the tx_frame_info, be careful to not overwrite this value. Also, the |
---|
| 2107 | // occupancy value includes itself. |
---|
| 2108 | // |
---|
| 2109 | ((tx_80211_queue_buffer_t*)(queue_entry->data))->tx_queue_details.enqueue_timestamp = get_mac_time_usec(); |
---|
| 2110 | ((tx_80211_queue_buffer_t*)(queue_entry->data))->tx_queue_details.occupancy = queue_length(queue_id)+1;//include this entry, which has not been added yet |
---|
| 2111 | ((tx_80211_queue_buffer_t*)(queue_entry->data))->tx_queue_details.id = queue_id; |
---|
| 2112 | |
---|
| 2113 | //Increment the num_linked_queue_buffer field in the attached station_info_t. This will prevent |
---|
| 2114 | // the framework from removing the station_info_t out from underneath us while this |
---|
| 2115 | // packet is enqueued. |
---|
| 2116 | ((tx_80211_queue_buffer_t*)(queue_entry->data))->station_info->num_linked_queue_buffer++; |
---|
| 2117 | |
---|
| 2118 | status = queue_enqueue(queue_id, queue_entry); |
---|
| 2119 | |
---|
| 2120 | // Poll the TX queues to see if anything needs to be transmitted |
---|
| 2121 | tx_poll_callback(); |
---|
| 2122 | |
---|
| 2123 | return status; |
---|
| 2124 | } |
---|
| 2125 | |
---|
| 2126 | void wlan_mac_transmit_wireless(dl_entry* queue_entry){ |
---|
| 2127 | tx_80211_queue_buffer_t* tx_queue_buffer; |
---|
| 2128 | int tx_pkt_buf = -1; |
---|
| 2129 | tx_pkt_buf = wlan_mac_high_get_empty_tx_packet_buffer(); |
---|
| 2130 | |
---|
| 2131 | if (queue_entry == NULL) return; |
---|
| 2132 | |
---|
| 2133 | if( tx_pkt_buf != -1 ){ |
---|
| 2134 | // Transmit the queue_entry |
---|
| 2135 | // NOTE: This copies all the contents of the queue element to the |
---|
| 2136 | // packet buffer so that the queue element can be safely returned |
---|
| 2137 | // to the free pool |
---|
| 2138 | |
---|
| 2139 | |
---|
| 2140 | tx_queue_buffer = (tx_80211_queue_buffer_t*)(queue_entry->data); |
---|
| 2141 | |
---|
| 2142 | // TODO: flush data cache here if caching is enabled - otherwise |
---|
| 2143 | // the CMDA from DRAM will read stale DRAM contents |
---|
| 2144 | // This is not the only place in our code that requires data cache flush/invalidation |
---|
| 2145 | // Xil_DCacheFlushRange((unsigned int)tx_queue_buffer, 4096); |
---|
| 2146 | wlan_mac_high_mpdu_transmit(tx_queue_buffer, tx_pkt_buf); |
---|
| 2147 | |
---|
| 2148 | //FIXME: there were two num_linked_queue_buffer decrements - one commented out as of this FIXME, leaving this |
---|
| 2149 | // here in case it's related to the ongoing deauthenticate_station/wlan_mac_enqueue_wireless_tx bug search |
---|
| 2150 | |
---|
| 2151 | // Decrement the number of linked queue buffers in the station_info_t so the framework's |
---|
| 2152 | // cleanup process can remove it later |
---|
| 2153 | //tx_queue_buffer->station_info->num_linked_queue_buffer--; |
---|
| 2154 | |
---|
| 2155 | // Decrement the num_linked_queue_buffer field in the attached station_info_t. If this was the |
---|
| 2156 | // last queued packet for this station, this will allow the framework to recycle this |
---|
| 2157 | // station_info_t if it also has not been flagged as something to keep. |
---|
| 2158 | ((tx_80211_queue_buffer_t*)(queue_entry->data))->station_info->num_linked_queue_buffer--; |
---|
| 2159 | } else { |
---|
| 2160 | xil_printf("Error in transmit_checkin(): no free Tx packet buffers. Packet was freed without being sent\n"); |
---|
| 2161 | } |
---|
| 2162 | |
---|
| 2163 | // Check in the queue entry because it is no longer being used |
---|
| 2164 | queue_checkin(queue_entry); |
---|
| 2165 | } |
---|
| 2166 | |
---|
| 2167 | void wlan_mac_purge_wireless_tx(u16 queue_id){ |
---|
| 2168 | tx_80211_queue_buffer_t* tx_queue_buffer; |
---|
| 2169 | u32 num_queued; |
---|
| 2170 | u32 i; |
---|
| 2171 | |
---|
| 2172 | volatile interrupt_state_t prev_interrupt_state; |
---|
| 2173 | |
---|
| 2174 | num_queued = queue_length(queue_id); |
---|
| 2175 | |
---|
| 2176 | prev_interrupt_state = wlan_platform_intc_stop(); |
---|
| 2177 | if (num_queued > 0) { |
---|
| 2178 | for (i = 0; i < num_queued; i++) { |
---|
| 2179 | tx_queue_buffer = (tx_80211_queue_buffer_t*)queue_retrieve_buffer_from_index(queue_id, i); |
---|
| 2180 | tx_queue_buffer->station_info->num_linked_queue_buffer--; |
---|
| 2181 | } |
---|
| 2182 | } |
---|
| 2183 | queue_purge(queue_id); |
---|
| 2184 | // Re-enable interrupts |
---|
| 2185 | wlan_platform_intc_set_state(prev_interrupt_state); |
---|
| 2186 | |
---|
| 2187 | return; |
---|
| 2188 | } |
---|
| 2189 | |
---|
| 2190 | |
---|