From cb4766fb72ff80f10ef373653647950494cdbd0d Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Sun, 14 Aug 2022 01:23:02 +0200
Subject: fixed return net type from net_xchg

---
 fw/fe310/eos/dev/net.c | 80 +++++++++++++++++++++++---------------------------
 1 file changed, 36 insertions(+), 44 deletions(-)

(limited to 'fw/fe310/eos/dev/net.c')

diff --git a/fw/fe310/eos/dev/net.c b/fw/fe310/eos/dev/net.c
index d287e5a..6114485 100644
--- a/fw/fe310/eos/dev/net.c
+++ b/fw/fe310/eos/dev/net.c
@@ -146,10 +146,10 @@ static int net_xchg_next(unsigned char *_buffer) {
 }
 
 static void net_handle_xchg(void) {
-    volatile uint32_t r1, r2, r3;
-    uint32_t len;
-
     if (net_state_flags & NET_STATE_FLAG_INIT) {
+        volatile uint32_t r1, r2, r3;
+        uint32_t len;
+
         net_state_flags &= ~NET_STATE_FLAG_INIT;
 
         r1 = SPI1_REG(SPI_REG_RXFIFO);
@@ -167,13 +167,6 @@ static void net_handle_xchg(void) {
         net_state_len_rx |= (r3 & 0xFF);
         len = MAX(net_state_len_tx, net_state_len_rx);
 
-        if (len > EOS_NET_MTU) {
-            net_state_flags &= ~NET_STATE_FLAG_XCHG;
-            SPI1_REG(SPI_REG_CSMODE) = SPI_CSMODE_AUTO;
-            SPI1_REG(SPI_REG_IE) = 0x0;
-            return;
-        }
-
         // esp32 dma workaraund
         if (len < 8 - NET_SIZE_HDR) {
             len = 8 - NET_SIZE_HDR;
@@ -181,6 +174,13 @@ static void net_handle_xchg(void) {
             len = ((len + NET_SIZE_HDR)/4 + 1) * 4 - NET_SIZE_HDR;
         }
 
+        if (len > EOS_NET_MTU) {
+            net_state_flags &= ~NET_STATE_FLAG_XCHG;
+            SPI1_REG(SPI_REG_CSMODE) = SPI_CSMODE_AUTO;
+            SPI1_REG(SPI_REG_IE) = 0x0;
+            return;
+        }
+
         _eos_spi_xchg_init(net_state_buf, len, 0);
         SPI1_REG(SPI_REG_TXCTRL) = SPI_TXWM(SPI_SIZE_WM);
         SPI1_REG(SPI_REG_IE) = SPI_IP_TXWM;
@@ -191,7 +191,7 @@ static void net_handle_xchg(void) {
     if (SPI1_REG(SPI_REG_CSMODE) == SPI_CSMODE_AUTO) {  // exchange done
         if (!(net_state_flags & NET_STATE_FLAG_SYNC)) {
             if (net_state_type) {
-                int r = eos_evtq_push_isr(EOS_EVT_NET | net_state_type, net_state_buf, net_state_len_rx);
+                int r = eos_evtq_push_isr(EOS_EVT_NET | (net_state_type & ~EOS_NET_MTYPE_FLAG_MASK), net_state_buf, net_state_len_rx);
                 if (r) eos_bufq_push(&net_buf_q, net_state_buf);
             } else if (((net_state_flags & NET_STATE_FLAG_ONEW) || net_state_next_cnt) && (net_state_next_buf == NULL)) {
                 net_state_next_buf = net_state_buf;
@@ -292,8 +292,25 @@ static void evt_handler(unsigned char type, unsigned char *buffer, uint16_t len)
     }
 }
 
+static void net_wait4xchg(void) {
+    while (net_state_flags & NET_STATE_FLAG_XCHG) {
+        asm volatile ("wfi");
+        set_csr(mstatus, MSTATUS_MIE);
+        clear_csr(mstatus, MSTATUS_MIE);
+    }
+}
+
+static void net_wait4cts(void) {
+    while (!(net_state_flags & NET_STATE_FLAG_CTS)) {
+        asm volatile ("wfi");
+        set_csr(mstatus, MSTATUS_MIE);
+        clear_csr(mstatus, MSTATUS_MIE);
+    }
+}
+
 static void net_pause(void) {
     net_state_flags &= ~NET_STATE_FLAG_RUN;
+    net_wait4xchg();
 }
 
 static void net_resume(void) {
@@ -376,23 +393,10 @@ void eos_net_start(void) {
 }
 
 void eos_net_stop(void) {
-    uint8_t done = 0;
-
     clear_csr(mstatus, MSTATUS_MIE);
-    if (net_state_flags & NET_STATE_FLAG_RUN) {
-        net_state_flags &= ~NET_STATE_FLAG_RUN;
-        done = !(net_state_flags & NET_STATE_FLAG_XCHG);
-    } else {
-        done = 1;
-    }
+    net_pause();
     set_csr(mstatus, MSTATUS_MIE);
 
-    while (!done) {
-        clear_csr(mstatus, MSTATUS_MIE);
-        done = !(net_state_flags & NET_STATE_FLAG_XCHG);
-        if (!done) asm volatile ("wfi");
-        set_csr(mstatus, MSTATUS_MIE);
-    }
     net_stop();
 }
 
@@ -477,7 +481,7 @@ void eos_net_release(void) {
 unsigned char *eos_net_alloc(void) {
     unsigned char *ret = NULL;
 
-    while (!ret) {
+    while (ret == NULL) {
         clear_csr(mstatus, MSTATUS_MIE);
         if (net_state_next_buf) {
             ret = net_state_next_buf;
@@ -534,31 +538,19 @@ static int net_xchg(unsigned char *type, unsigned char *buffer, uint16_t *len, u
 
     if (_sync) {
         net_pause();
-        while (!(net_state_flags & NET_STATE_FLAG_CTS)) {
-            asm volatile ("wfi");
-            set_csr(mstatus, MSTATUS_MIE);
-            clear_csr(mstatus, MSTATUS_MIE);
-        }
+        net_wait4cts();
         if (flags & EOS_NET_FLAG_SYNC) {
             net_state_flags |= NET_STATE_FLAG_SYNC;
         }
         net_xchg_start(_type, buffer, _len);
         if (flags & EOS_NET_FLAG_SYNC) {
             if (flags & EOS_NET_FLAG_REPL) {
-                while (!(net_state_flags & NET_STATE_FLAG_CTS)) {
-                    asm volatile ("wfi");
-                    set_csr(mstatus, MSTATUS_MIE);
-                    clear_csr(mstatus, MSTATUS_MIE);
-                }
+                net_wait4cts();
                 net_xchg_start(0, buffer, 0);
             }
-            while (net_state_flags & NET_STATE_FLAG_XCHG) {
-                asm volatile ("wfi");
-                set_csr(mstatus, MSTATUS_MIE);
-                clear_csr(mstatus, MSTATUS_MIE);
-            }
+            net_wait4xchg();
             net_state_flags &= ~NET_STATE_FLAG_SYNC;
-            *type = net_state_type;
+            *type = (net_state_type & ~EOS_NET_MTYPE_FLAG_MASK);
             *len = net_state_len_rx;
         }
         net_resume();
@@ -591,8 +583,8 @@ int eos_net_send_async(unsigned char type, unsigned char *buffer, uint16_t len,
 
 int _eos_net_send(unsigned char type, unsigned char *buffer, uint16_t len, unsigned char async, unsigned char more) {
     if (async) {
-        eos_net_send_async(type, buffer, len, more);
+        return eos_net_send_async(type, buffer, len, more);
     } else {
-        eos_net_send(type, buffer, len);
+        return eos_net_send(type, buffer, len);
     }
 }
-- 
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