- */
- // NEEL EDIT OVER
- /*=======================================================*/
- /*=================== PLIC Connections ==================== */
- `ifdef PLIC_main
- /*TODO DMA interrupt need to be connected to the plic
- for(Integer i=1; i<8; i=i+1) begin
- `ifdef DMA
- rule rl_connect_dma_interrupts_to_plic;
- if(dma.interrupt_to_processor[i-1]==1'b1) begin
- ff_gateway_queue[i].enq(1);
- plic.ifc_external_irq[i].irq_frm_gateway(True);
- end
- endrule
- `else
- rule rl_connect_dma_interrupts_to_plic;
- ff_gateway_queue[i].enq(0);
- endrule
- `endif
- end
- */
- rule rl_connect_i2c0_to_plic;
- `ifdef I2C0
- if(i2c0.isint()==1'b1) begin
- ff_gateway_queue[8].enq(1);
- plic.ifc_external_irq[8].irq_frm_gateway(True);
- end
- `else
- ff_gateway_queue[8].enq(0);
- `endif
- endrule
-
- rule rl_connect_i2c1_to_plic;
- `ifdef I2C1
- if(i2c1.isint()==1'b1) begin
- ff_gateway_queue[9].enq(1);
- plic.ifc_external_irq[9].irq_frm_gateway(True);
- end
- `else
- ff_gateway_queue[9].enq(0);
- `endif
- endrule
-
- rule rl_connect_i2c0_timerint_to_plic;
- `ifdef I2C0
- if(i2c0.timerint()==1'b1) begin
- ff_gateway_queue[10].enq(1);
- plic.ifc_external_irq[10].irq_frm_gateway(True);
- end
- `else
- ff_gateway_queue[10].enq(0);
- `endif
- endrule
-
- rule rl_connect_i2c1_timerint_to_plic;
- `ifdef I2C1
- if(i2c1.timerint()==1'b1) begin
- ff_gateway_queue[11].enq(1);
- plic.ifc_external_irq[11].irq_frm_gateway(True);
- end
- `else
- ff_gateway_queue[11].enq(0);
- `endif
- endrule
-
- rule rl_connect_i2c0_isber_to_plic;
- `ifdef I2C0
- if(i2c0.isber()==1'b1) begin
- ff_gateway_queue[12].enq(1);
- plic.ifc_external_irq[12].irq_frm_gateway(True);
- end
- `else
- ff_gateway_queue[12].enq(0);
- `endif
- endrule
-
- rule rl_connect_i2c1_isber_to_plic;
- `ifdef I2C1
- if(i2c1.isber()==1'b1) begin
- ff_gateway_queue[13].enq(1);
- plic.ifc_external_irq[13].irq_frm_gateway(True);
- end
- `else
- ff_gateway_queue[13].enq(0);
- `endif
- endrule
-
- for(Integer i = 14; i < 20; i=i+1) begin
- rule rl_connect_qspi0_to_plic;
- `ifdef QSPI0
- if(qspi0.interrupts()[i-14]==1'b1) begin
- ff_gateway_queue[i].enq(1);
- plic.ifc_external_irq[i].irq_frm_gateway(True);
- end
- `else
- ff_gateway_queue[i].enq(0);
- `endif
- endrule
- end
-
- for(Integer i = 20; i<26; i=i+1) begin
- rule rl_connect_qspi1_to_plic;
- `ifdef QSPI1
- if(qspi1.interrupts()[i-20]==1'b1) begin
- ff_gateway_queue[i].enq(1);
- plic.ifc_external_irq[i].irq_frm_gateway(True);
- end
- `else
- ff_gateway_queue[i].enq(0);
- `endif
- endrule
- end
-
- `ifdef UART0
- SyncBitIfc#(Bit#(1)) uart0_interrupt <-
- mkSyncBitToCC(sp_clock, uart_reset);
- rule synchronize_the_uart0_interrupt;
- uart0_interrupt.send(uart0.irq);
- endrule
- `endif
- rule rl_connect_uart_to_plic;
- `ifdef UART0
- if(uart0_interrupt.read==1'b1) begin
- ff_gateway_queue[27].enq(1);
- plic.ifc_external_irq[27].irq_frm_gateway(True);
- end
-
- `else
- ff_gateway_queue[27].enq(0);
- `endif
- endrule
-
- for(Integer i = 28; i<`INTERRUPT_PINS; i=i+1) begin
- rule rl_raise_interrupts;
- if((i-28)<`IONum) begin //Peripheral interrupts
- if(gpio.to_plic[i-28]==1'b1) begin
- plic.ifc_external_irq[i].irq_frm_gateway(True);
- ff_gateway_queue[i].enq(1);
- end
- end
- endrule
- end
-
- rule rl_completion_msg_from_plic;
- let id <- plic.intrpt_completion;
- interrupt_id <= id;
- `ifdef verbose $display("Dequeing the FIFO -- PLIC Interrupt Serviced id: %d",id); `endif
- endrule
-
- for(Integer i=0; i <`INTERRUPT_PINS; i=i+1) begin
- rule deq_gateway_queue;
- if(interrupt_id==fromInteger(i)) begin
- ff_gateway_queue[i].deq;
- `ifdef $display($time,"Dequeing the Interrupt request for ID: %d",i); `endif
- end
- endrule
- end
-