From 2e6b2e08756e618e5d4316ff277e78213942a2a0 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Wed, 19 Feb 2025 16:23:13 +0100 Subject: [PATCH] hw/char/bcm2835_aux: Really use RX FIFO depth MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit While we model a 8-elements RX FIFO since the BCM2835 AUX model was introduced in commit 97398d900ca ("bcm2835_aux: add emulation of BCM2835 AUX block") we only read 1 char at a time! Have the IOCanReadHandler handler return how many elements are available, and use that in the IOReadHandler handler. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Luc Michel Reviewed-by: Richard Henderson Message-Id: <20250220092903.3726-6-philmd@linaro.org> --- hw/char/bcm2835_aux.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/hw/char/bcm2835_aux.c b/hw/char/bcm2835_aux.c index 73ad593406..c6e7eccf7d 100644 --- a/hw/char/bcm2835_aux.c +++ b/hw/char/bcm2835_aux.c @@ -221,7 +221,7 @@ static int bcm2835_aux_can_receive(void *opaque) { BCM2835AuxState *s = opaque; - return s->read_count < BCM2835_AUX_RX_FIFO_LEN; + return BCM2835_AUX_RX_FIFO_LEN - s->read_count; } static void bcm2835_aux_put_fifo(void *opaque, uint8_t value) @@ -243,7 +243,9 @@ static void bcm2835_aux_put_fifo(void *opaque, uint8_t value) static void bcm2835_aux_receive(void *opaque, const uint8_t *buf, int size) { - bcm2835_aux_put_fifo(opaque, *buf); + for (int i = 0; i < size; i++) { + bcm2835_aux_put_fifo(opaque, buf[i]); + } } static const MemoryRegionOps bcm2835_aux_ops = { -- 2.30.2