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imxrt117x: CM4 MU optimizations #401

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merged 1 commit into from
Jul 20, 2023
Merged

imxrt117x: CM4 MU optimizations #401

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14 changes: 11 additions & 3 deletions multi/imxrt-multi/cm4.c
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Original file line number Diff line number Diff line change
Expand Up @@ -19,9 +19,14 @@
#include <sys/interrupt.h>
#include <sys/threads.h>
#include <phoenix/arch/imxrt1170.h>
#include <board_config.h>

#include "common.h"

#ifndef CM4_MU_FIFO_SIZE
#define CM4_MU_FIFO_SIZE 256
#endif

#define CM4_MEMORY_START ((void *)0x20200000)
#define CM4_MEMORY_SIZE (256 * 1024)

Expand All @@ -47,7 +52,7 @@ typedef union {


typedef struct {
unsigned char buff[256];
unsigned char buff[CM4_MU_FIFO_SIZE];
volatile int wptr;
volatile int rptr;
} fifo_t;
Expand Down Expand Up @@ -151,15 +156,18 @@ static inline int fifo_pushPacket(packet_t *packet, fifo_t *fifo)

static int mu_irqHandler(unsigned int n, void *arg)
{
uint32_t sr;
int chan;
packet_t packet;

(void)n;
(void)arg;

sr = *(m4_common.mu + asr);

/* TX */
for (chan = 0; chan < chanLen; ++chan) {
if ((*(m4_common.mu + asr) & (1 << (23 - chan))) != 0) {
if ((sr & (1 << (23 - chan))) != 0) {
if (fifo_popPacket(&packet, &m4_common.channel[chan].tx) == 0) {
setTXirq(chan, 0);
}
Expand All @@ -171,7 +179,7 @@ static int mu_irqHandler(unsigned int n, void *arg)

/* RX */
for (chan = 0; chan < chanLen; ++chan) {
if ((*(m4_common.mu + asr) & (1 << (27 - chan))) != 0) {
if ((sr & (1 << (27 - chan))) != 0) {
packet.word = *(m4_common.mu + arr0 + chan);
fifo_pushPacket(&packet, &m4_common.channel[chan].rx);
}
Expand Down
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