register address reg_access field field_access reset_value bitpos_end bitpos_start function chnl0_ctrl 0x00 RW chnl_en RW 0x1 0 0 channel enable prio_level RW 0x3 2 1 priority level pkt_len RW 0x0 5 3 packet length reserved RO 0x0 31 6 reserved chnl1_ctrl 0x04 RW chnl_en RW 0x1 0 0 channel enable prio_level RW 0x3 2 1 priority level pkt_len RW 0x0 5 3 packet length reserved RO 0x0 31 6 reserved chnl2_ctrl 0x08 RW chnl_en RW 0x1 0 0 channel enable prio_level RW 0x3 2 1 priority level pkt_len RW 0x0 5 3 packet length reserved RO 0x0 31 6 reserved chnl0_stat 0x10 RO fifo_avail RO 0x20 7 0 fifo available storage reserved RO 0x0 31 8 reserved chnl1_stat 0x14 RO fifo_avail RO 0x20 7 0 fifo available storage reserved RO 0x0 31 8 reserved chnl2_stat 0x18 RO fifo_avail RO 0x20 7 0 fifo available storage reserved RO 0x0 31 8 reserved

根据提供的信息，我们可以将Excel表格中的信息转化为如下的UVM RAL模板：

// 寄存器地址定义
localparam int REG_ADDR_CHNL0_CTRL = 32'h00000000;
localparam int REG_ADDR_CHNL1_CTRL = 32'h00000004;
localparam int REG_ADDR_CHNL2_CTRL = 32'h00000008;
localparam int REG_ADDR_CHNL0_STAT = 32'h00000010;
localparam int REG_ADDR_CHNL1_STAT = 32'h00000014;
localparam int REG_ADDR_CHNL2_STAT = 32'h00000018;

// 寄存器访问权限定义
typedef enum bit [1:0] {
    REG_ACCESS_RW = 2'b00,
    REG_ACCESS_RO = 2'b01,
    REG_ACCESS_WO = 2'b10,
    REG_ACCESS_RSVD = 2'b11
} reg_access_e;

// 字段访问权限定义
typedef enum bit [1:0] {
    FIELD_ACCESS_RW = 2'b00,
    FIELD_ACCESS_RO = 2'b01,
    FIELD_ACCESS_RSVD = 2'b11
} field_access_e;

// my_reg_block_pkg.sv
package my_reg_block_pkg;

// 寄存器定义
class my_reg_block extends uvm_reg_block;

    // 通道0控制寄存器
    uvm_reg chnl0_ctrl;
    // 通道1控制寄存器
    uvm_reg chnl1_ctrl;
    // 通道2控制寄存器
    uvm_reg chnl2_ctrl;
    // 通道0状态寄存器
    uvm_reg chnl0_stat;
    // 通道1状态寄存器
    uvm_reg chnl1_stat;
    // 通道2状态寄存器
    uvm_reg chnl2_stat;

    // 构造函数
    function new(string name = "my_reg_block");
        super.new(name, `UVM_NO_COVERAGE);
        // 通道0控制寄存器
        chnl0_ctrl = uvm_reg::type_id::create("chnl0_ctrl");
        chnl0_ctrl.configure(this, null, REG_ADDR_CHNL0_CTRL, 32'h0, "RW", 32'h0, 0, 0);
        chnl0_ctrl.set_access("RW");
        // 通道1控制寄存器
        chnl1_ctrl = uvm_reg::type_id::create("chnl1_ctrl");
        chnl1_ctrl.configure(this, null, REG_ADDR_CHNL1_CTRL, 32'h0, "RW", 32'h0, 0, 0);
        chnl1_ctrl.set_access("RW");
        // 通道2控制寄存器
        chnl2_ctrl = uvm_reg::type_id::create("chnl2_ctrl");
        chnl2_ctrl.configure(this, null, REG_ADDR_CHNL2_CTRL, 32'h0, "RW", 32'h0, 0, 0);
        chnl2_ctrl.set_access("RW");
        // 通道0状态寄存器
        chnl0_stat = uvm_reg::type_id::create("chnl0_stat");
        chnl0_stat.configure(this, null, REG_ADDR_CHNL0_STAT, 32'h0, "RO", 32'h0, 7, 0);
        chnl0_stat.set_access("RO");
        // 通道1状态寄存器
        chnl1_stat = uvm_reg::type_id::create("chnl1_stat");
        chnl1_stat.configure(this, null, REG_ADDR_CHNL1_STAT, 32'h0, "RO", 32'h0, 7, 0);
        chnl1_stat.set_access("RO");
        // 通道2状态寄存器
        chnl2_stat = uvm_reg::type_id::create("chnl2_stat");
        chnl2_stat.configure(this, null, REG_ADDR_CHNL2_STAT, 32'h0, "RO", 32'h0, 7, 0);
        chnl2_stat.set_access("RO");
    endfunction

endclass

// 字段定义
class my_reg_field extends uvm_reg_field;
    // 构造函数
    function new(string name = "my_reg_field", int size = 1, int offset = 0, string access = "RW", bit reset = 0);
        super.new(name, size, offset, access, reset, `UVM_NO_COVERAGE);
    endfunction
endclass

// 通道0控制寄存器字段定义
class chnl0_ctrl_fields extends uvm_reg_fields;
    // 通道使能
    my_reg_field chnl_en;
    // 优先级等级
    my_reg_field prio_level;
    // 数据包长度
    my_reg_field pkt_len;
    // 保留字段
    my_reg_field reserved;

    // 构造函数
    function new(string name = "chnl0_ctrl_fields");
        super.new(name, `UVM_NO_COVERAGE);
        chnl_en = my_reg_field::type_id::create("chnl_en", 1, 0, "RW", 1'b0);
        prio_level = my_reg_field::type_id::create("prio_level", 2, 1, "RW", 2'h0);
        pkt_len = my_reg_field::type_id::create("pkt_len", 3, 3, "RW", 3'h0);
        reserved = my_reg_field::type_id::create("reserved", 26, 6, "RO", 26'h0);
    endfunction
endclass

// 通道1控制寄存器字段定义
class chnl1_ctrl_fields extends uvm_reg_fields;
    // 通道使能
    my_reg_field chnl_en;
    // 优先级等级
    my_reg_field prio_level;
    // 数据包长度
    my_reg_field pkt_len;
    // 保留字段
    my_reg_field reserved;

    // 构造函数
    function new(string name = "chnl1_ctrl_fields");
        super.new(name, `UVM_NO_COVERAGE);
        chnl_en = my_reg_field::type_id::create("chnl_en", 1, 0, "RW", 1'b0);
        prio_level = my_reg_field::type_id::create("prio_level", 2, 1, "RW", 2'h0);
        pkt_len = my_reg_field::type_id::create("pkt_len", 3, 3, "RW", 3'h0);
        reserved = my_reg_field::type_id::create("reserved", 26, 6, "RO", 26'h0);
    endfunction
endclass

// 通道2控制寄存器字段定义
class chnl2_ctrl_fields extends uvm_reg_fields;
    // 通道使能
    my_reg_field chnl_en;
    // 优先级等级
    my_reg_field prio_level;
    // 数据包长度
    my_reg_field pkt_len;
    // 保留字段
    my_reg_field reserved;

    // 构造函数
    function new(string name = "chnl2_ctrl_fields");
        super.new(name, `UVM_NO_COVERAGE);
        chnl_en = my_reg_field::type_id::create("chnl_en", 1, 0, "RW", 1'b0);
        prio_level = my_reg_field::type_id::create("prio_level", 2, 1, "RW", 2'h0);
        pkt_len = my_reg_field::type_id::create("pkt_len", 3, 3, "RW", 3'h0);
        reserved = my_reg_field::type_id::create("reserved", 26, 6, "RO", 26'h0);
    endfunction
endclass

// 通道0状态寄存器字段定义
class chnl0_stat_fields extends uvm_reg_fields;
    // FIFO可用空间
    my_reg_field fifo_avail;
    // 保留字段
    my_reg_field reserved;

    // 构造函数
    function new(string name = "chnl0_stat_fields");
        super.new(name, `UVM_NO_COVERAGE);
        fifo_avail = my_reg_field::type_id::create("fifo_avail", 8, 0, "RO", 8'h0);
        reserved = my_reg_field::type_id::create("reserved", 24, 8, "RO", 24'h0);
    endfunction
endclass

// 通道1状态寄存器字段定义
class chnl1_stat_fields extends uvm_reg_fields;
    // FIFO可用空间
    my_reg_field fifo_avail;
    // 保留字段
    my_reg_field reserved;

    // 构造函数
    function new(string name = "chnl1_stat_fields");
        super.new(name, `UVM_NO_COVERAGE);
        fifo_avail = my_reg_field::type_id::create("fifo_avail", 8, 0, "RO", 8'h0);
        reserved = my_reg_field::type_id::create("reserved", 24, 8, "RO", 24'h0);
    endfunction
endclass

// 通道2状态寄存器字段定义
class chnl2_stat_fields extends uvm_reg_fields;
    // FIFO可用空间
    my_reg_field fifo_avail;
    // 保留字段
    my_reg_field reserved;

    // 构造函数
    function new(string name = "chnl2_stat_fields");
        super.new(name, `UVM_NO_COVERAGE);
        fifo_avail = my_reg_field::type_id::create("fifo_avail", 8, 0, "RO", 8'h0);
        reserved = my_reg_field::type_id::create("reserved", 24, 8, "RO", 24'h0);
    endfunction
endclass

endpackage

以上代码中定义了一个名为my_reg_block_pkg的UVM RAL模型包，其中包含了一个名为my_reg_block的寄存器块，以及各个寄存器的字段定义。你可以根据自己的需要进行修改和扩展。