| Line 152... |
Line 152... |
wire [11:0] r2b_caddr;
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wire [11:0] r2b_caddr;
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reg [APP_AW-1:0] curr_sdr_addr, sdr_addrs_mask;
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reg [APP_AW-1:0] curr_sdr_addr, sdr_addrs_mask;
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wire [APP_AW-1:0] next_sdr_addr, next_sdr_addr1;
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wire [APP_AW-1:0] next_sdr_addr, next_sdr_addr1;
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//--------------------------------------------------------------------
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// Generate the internal Adress and Burst length Based on sdram width
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//--------------------------------------------------------------------
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reg [APP_AW:0] req_addr_int;
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reg [APP_RW-1:0] req_len_int;
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always @(*) begin
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if(sdr_width == 2'b00) begin // 32 Bit SDR Mode
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req_addr_int = {1'b0,req_addr};
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req_len_int = req_len;
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end else if(sdr_width == 2'b01) begin // 16 Bit SDR Mode
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// Changed the address and length to match the 16 bit SDR Mode
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req_addr_int = {req_addr,1'b0};
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req_len_int = {req_len,1'b0};
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end else begin // 8 Bit SDR Mode
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// Changed the address and length to match the 16 bit SDR Mode
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req_addr_int = {req_addr,2'b0};
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req_len_int = {req_len,2'b0};
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end
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end
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//
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//
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// The maximum length for no page overflow is 200h/100h - caddr. Split a request
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// The maximum length for no page overflow is 200h/100h - caddr. Split a request
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// into 2 or more requests if it crosses a page boundary.
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// into 2 or more requests if it crosses a page boundary.
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// For non-queue accesses req_addr_mask is set to all 1 and the accesses
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// For non-queue accesses req_addr_mask is set to all 1 and the accesses
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// proceed linearly.
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// proceed linearly.
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| Line 197... |
Line 218... |
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r2b_req_id <= (req_ack) ? req_id : r2b_req_id;
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r2b_req_id <= (req_ack) ? req_id : r2b_req_id;
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lcl_wrap <= (req_ack) ? req_wrap : lcl_wrap;
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lcl_wrap <= (req_ack) ? req_wrap : lcl_wrap;
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lcl_req_len <= (req_ack) ? req_len :
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lcl_req_len <= (req_ack) ? req_len_int :
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(req_ld) ? next_req_len : lcl_req_len;
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(req_ld) ? next_req_len : lcl_req_len;
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curr_sdr_addr <= (req_ack) ? req_addr :
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curr_sdr_addr <= (req_ack) ? req_addr_int :
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(req_ld) ? next_sdr_addr : curr_sdr_addr;
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(req_ld) ? next_sdr_addr : curr_sdr_addr;
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sdr_addrs_mask <= (req_ack) ?((sdr_width == 2'b00) ? req_addr_mask :
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sdr_addrs_mask <= (req_ack) ?((sdr_width == 2'b00) ? req_addr_mask :
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(sdr_width == 2'b01) ? {req_addr_mask,req_addr_mask[0]} :
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(sdr_width == 2'b01) ? {req_addr_mask,req_addr_mask[0]} :
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{req_addr_mask,req_addr_mask[1:0]}) : sdr_addrs_mask;
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{req_addr_mask,req_addr_mask[1:0]}) : sdr_addrs_mask;
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