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char: i.MX: Add support for "TX complete" interrupt

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Add support for "TX complete"/TXDC interrupt generate by real HW since
it is needed to support guests other than Linux.

Based on the patch by Bill Paul as found here:
https://bugs.launchpad.net/qemu/+bug/1753314

Cc: qemu-devel@nongnu.org
Cc: qemu-arm@nongnu.org
Cc: Bill Paul <wpaul@windriver.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Bill Paul <wpaul@windriver.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Message-id: 20180315191141.6789-2-andrew.smirnov@gmail.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Andrey Smirnov 2018-03-15 12:11:41 -07:00 • committed by Peter Maydell
parent 824e4a12f3
commit 46d3fb634c
2 changed files with 20 additions and 3 deletions
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3
include/hw/char/imx_serial.h
View file

@ -67,6 +67,8 @@
#define UCR2_RXEN (1<<1) /* Receiver enable */
#define UCR2_SRST (1<<0) /* Reset complete */
#define UCR4_TCEN BIT(3) /* TX complete interrupt enable */
#define UTS1_TXEMPTY (1<<6)
#define UTS1_RXEMPTY (1<<5)
#define UTS1_TXFULL (1<<4)
@ -95,6 +97,7 @@ typedef struct IMXSerialState {
uint32_t ubmr;
uint32_t ubrc;
uint32_t ucr3;
uint32_t ucr4;
qemu_irq irq;
CharBackend chr;