diff options
| author | Philippe Mathieu-Daudé <philmd@linaro.org> | 2023-05-22 15:52:06 +0200 |
|---|---|---|
| committer | Philippe Mathieu-Daudé <philmd@linaro.org> | 2024-09-13 20:11:13 +0200 |
| commit | 02b1f7f619285c21a4eaa1a21734ab196824fc54 (patch) | |
| tree | bf116f97a98eb111823a5269b3751548b22b0bc8 | |
| parent | 1fb2721aa65daddb4ce1dca705b56c08f1dfbd54 (diff) | |
hw/char/pl011: Split RX/TX path of pl011_reset_fifo()
To be able to reset the RX or TX FIFO separately,
split pl011_reset_fifo() in two.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240719181041.49545-6-philmd@linaro.org>
| -rw-r--r-- | hw/char/pl011.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/hw/char/pl011.c b/hw/char/pl011.c index 580f5db4ae..5f605ace68 100644 --- a/hw/char/pl011.c +++ b/hw/char/pl011.c @@ -154,14 +154,21 @@ static inline unsigned pl011_get_fifo_depth(PL011State *s) return pl011_is_fifo_enabled(s) ? PL011_FIFO_DEPTH : 1; } -static inline void pl011_reset_fifo(PL011State *s) +static inline void pl011_reset_rx_fifo(PL011State *s) { s->read_count = 0; s->read_pos = 0; /* Reset FIFO flags */ - s->flags &= ~(PL011_FLAG_RXFF | PL011_FLAG_TXFF); - s->flags |= PL011_FLAG_RXFE | PL011_FLAG_TXFE; + s->flags &= ~PL011_FLAG_RXFF; + s->flags |= PL011_FLAG_RXFE; +} + +static inline void pl011_reset_tx_fifo(PL011State *s) +{ + /* Reset FIFO flags */ + s->flags &= ~PL011_FLAG_TXFF; + s->flags |= PL011_FLAG_TXFE; } static void pl011_put_fifo(void *opaque, uint32_t value) @@ -410,7 +417,8 @@ static void pl011_write(void *opaque, hwaddr offset, case 11: /* UARTLCR_H */ /* Reset the FIFO state on FIFO enable or disable */ if ((s->lcr ^ value) & LCR_FEN) { - pl011_reset_fifo(s); + pl011_reset_rx_fifo(s); + pl011_reset_tx_fifo(s); } if ((s->lcr ^ value) & LCR_BRK) { int break_enable = value & LCR_BRK; @@ -619,7 +627,8 @@ static void pl011_reset(DeviceState *dev) s->ifl = 0x12; s->cr = 0x300; s->flags = 0; - pl011_reset_fifo(s); + pl011_reset_rx_fifo(s); + pl011_reset_tx_fifo(s); } static void pl011_class_init(ObjectClass *oc, void *data) |