qemu_lan911x_tsfl_int.patch

From bbe2112d6c311142329f968576fbaaa91084525d Mon Sep 17 00:00:00 2001
From: Lucas Dietrich <ld.adecy@gmail.com>
Date: Mon, 29 Aug 2022 22:00:46 +0200
Subject: [PATCH] Signal TSFL_INT flag for lan9118 device interrupt.

This flag is required for Micrium lan911x ethernet driver to work.

Signed-off-by: Lucas Dietrich <ld.adecy@gmail.com>
---
 hw/net/lan9118.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/hw/net/lan9118.c b/hw/net/lan9118.c
index 6aff424cbe..a8364cc9bf 100644
--- a/hw/net/lan9118.c
+++ b/hw/net/lan9118.c
@@ -696,6 +696,14 @@ static void do_tx_packet(lan9118_state *s)
     n = (s->tx_status_fifo_head + s->tx_status_fifo_used) & 511;
     s->tx_status_fifo[n] = status;
     s->tx_status_fifo_used++;
+
+    /* TX Status Level. The value in this field sets the level, in number of
+     * DWORDs, at which the TX Status FIFO Level interrupt (TSFL) will be
+     * generated. When the TX Status FIFO used space is greater than this value
+     * an TX Status FIFO Level interrupt (TSFL) will be generated. */
+    if (s->tx_status_fifo_used > ((s->fifo_int >> 16) & 0xff)) {
+        s->int_sts |= TSFL_INT;
+    }
     if (s->tx_status_fifo_used == 512) {
         s->int_sts |= TSFF_INT;
         /* TODO: Stop transmission.  */
-- 
2.37.1