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add second XSPN partition

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This commit is contained in:
Stanislaw Kaushanski 2021-04-20 08:30:39 +02:00
parent 96de37dbc2
commit 26d7560891
3 changed files with 69 additions and 36 deletions
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raven_spn/raven_spn
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27
raven_spn/src/init.h
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@ -12,7 +12,8 @@ typedef void (*function_ptr_t) (void);
//! Instance data for the PLIC.
plic_instance_t g_plic;
std::array<function_ptr_t,PLIC_NUM_INTERRUPTS> g_ext_interrupt_handlers;
bool hw_interrupt{true};
bool spn1_hw_interrupt{true};
bool spn2_hw_interrupt{true};
/*! \brief external interrupt handler
@ -43,19 +44,26 @@ void configure_irq(size_t irq_num, function_ptr_t handler, unsigned char prio=1)
PLIC_enable_interrupt(&g_plic, irq_num);
}
static void msi_interrupt_handler(){
hw_interrupt = false;
}
void wait_for_interrupt() {
void wait_for_spn1_interrupt() {
// wait until HW is done
if(hw_interrupt) {
if(spn1_hw_interrupt) {
do{
asm("wfi");
asm("nop");
}while(hw_interrupt);
}while(spn1_hw_interrupt);
}
hw_interrupt=true;
spn1_hw_interrupt=true;
}
void wait_for_spn2_interrupt() {
// wait until HW is done
if(spn2_hw_interrupt) {
do{
asm("wfi");
asm("nop");
}while(spn2_hw_interrupt);
}
spn2_hw_interrupt=true;
}
/*!\brief initializes platform
@ -77,7 +85,6 @@ void platform_init(){
clear_csr(mie, MIP_MEIP);
clear_csr(mie, MIP_MTIP);
for (auto& h:g_ext_interrupt_handlers) h=no_interrupt_handler;
configure_irq(2, msi_interrupt_handler);
// Enable interrupts in general.
set_csr(mstatus, MSTATUS_MIE);
// Enable the Machine-External bit in MIE

76
raven_spn/src/raven_spn.cpp
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@ -3,21 +3,41 @@
#include "init.h"
#include "spn_checker_regs.h"
using spn = spn_regs<0x90000000>;
using spn_1 = spn_regs<0x90000000>;
using spn_2 = spn_regs<0xC0000000>;
using spn_checker = spn_checker_regs<0x10040000>;
void run_xspn(int in_addr, int out_addr, int num_samples, int in_beats, int out_beats) {
spn::mode_reg() = 0;
spn::input_length_reg() = num_samples; // each sample consists of 5 uint8 values
spn::input_addr_reg() = in_addr;
spn::output_addr_reg() = out_addr;
spn::num_of_in_beats_reg() = in_beats; // Number of AXI4 burst beats needed to load all input data
spn::num_of_out_beats_reg() = out_beats; // Number of AXI4 burst beats needed to store all result data
printf("Starting XSPN\n");
spn::start_reg() = 1;
void run_xspn1(int in_addr, int out_addr, int num_samples, int in_beats, int out_beats) {
printf("Starting first XSPN instance\n");
spn_1::mode_reg() = 0;
spn_1::input_length_reg() = num_samples; // each sample consists of 5 uint8 values
spn_1::input_addr_reg() = in_addr;
spn_1::output_addr_reg() = out_addr;
spn_1::num_of_in_beats_reg() = in_beats; // Number of AXI4 burst beats needed to load all input data
spn_1::num_of_out_beats_reg() = out_beats; // Number of AXI4 burst beats needed to store all result data
spn_1::start_reg() = 1;
}
void run_xspn2(int in_addr, int out_addr, int num_samples, int in_beats, int out_beats) {
printf("Starting second XSPN instance\n");
spn_2::mode_reg() = 0;
spn_2::input_length_reg() = num_samples; // each sample consists of 5 uint8 values
spn_2::input_addr_reg() = in_addr;
spn_2::output_addr_reg() = out_addr;
spn_2::num_of_in_beats_reg() = in_beats; // Number of AXI4 burst beats needed to load all input data
spn_2::num_of_out_beats_reg() = out_beats; // Number of AXI4 burst beats needed to store all result data
spn_2::start_reg() = 1;
}
static void spn1_interrupt_handler(){
spn1_hw_interrupt = false;
spn_1::interrupt_reg() = 1;
}
static void spn2_interrupt_handler(){
spn2_hw_interrupt = false;
spn_2::interrupt_reg() = 1;
}
/*! \brief main function
*
*/
@ -25,13 +45,20 @@ int main() {
platform_init();
configure_irq(2, spn1_interrupt_handler);
configure_irq(22, spn2_interrupt_handler);
spn::mode_reg() = 1;
spn::start_reg() = 1;
wait_for_interrupt();
spn::interrupt_reg() = 1;
uint32_t readout = spn::readout_reg();
printf("READOUT HW:0x%x\n", readout);
spn_1::mode_reg() = 1;
spn_1::start_reg() = 1;
wait_for_spn1_interrupt();
uint32_t readout = spn_1::readout_reg();
printf("READOUT first HW instance:0x%x\n", readout);
spn_2::mode_reg() = 1;
spn_2::start_reg() = 1;
wait_for_spn2_interrupt();
uint32_t readout2 = spn_2::readout_reg();
printf("READOUT second HW instance:0x%x\n", readout2);
uint32_t axi_bytes = readout;
axi_bytes = axi_bytes & 0xff;
@ -42,16 +69,14 @@ int main() {
uint32_t sample_bytes = readout;
sample_bytes = sample_bytes >> 16;
sample_bytes = sample_bytes / 8;
printf("Sample Bytes: %d\n", sample_bytes);
uint32_t result_bytes = 8;
printf("Result Bytes: %d\n", result_bytes);
const uint32_t amount_of_input_samples = 50000;
uint32_t step = 50000;
uint32_t iterations = 15;
uint32_t iterations = 5;
uint32_t in_beats = (step * sample_bytes) / axi_bytes;
if (in_beats * axi_bytes < step * sample_bytes) in_beats++;
@ -59,7 +84,8 @@ int main() {
if (out_beats * axi_bytes < step * result_bytes) out_beats++;
int in_addr = 0x20010000; // place input samples in the SPI memory
int out_addr = 0x20510000;
int out_addr1 = 0x20510000;
int out_addr2 = 0x20520000;
// inject SPN input data
spn_checker::input_addr_reg() = in_addr;
@ -67,17 +93,17 @@ int main() {
spn_checker::start_data_trans_reg() = 1;
spn_checker::output_addr_reg() = out_addr;
spn_checker::output_addr_reg() = out_addr1;
for (int k = 0; k < iterations*step; k+=step) {
run_xspn(in_addr, out_addr, step, in_beats, out_beats);
wait_for_interrupt();
run_xspn1(in_addr, out_addr1, step, in_beats, out_beats);
run_xspn2(in_addr, out_addr2, step, in_beats, out_beats);
wait_for_spn1_interrupt();
wait_for_spn2_interrupt();
printf("XSPN finished\n");
spn_checker::offset_reg() = k;
spn_checker::length_reg() = step;
spn_checker::start_result_check_reg() = 1;
spn::interrupt_reg() = 1;
in_addr += step * sample_bytes; // 5 bytes in each sample
if (k == amount_of_input_samples) {
in_addr = 0x20010000;