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| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2003-02-20 21:32:07 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2003-02-20 21:32:07 +0000 |
| commit | 4f3e4f33db96df1182c0fb24c987fd9cbed95062 (patch) | |
| tree | 791e7ffa208a92511c7f899ec4905b8afe24f9c3 /c/src/lib/libbsp/powerpc/shared/console/uart.h | |
| parent | 2003-02-20 Till Straumann <strauman@slac.stanford.edu> (diff) | |
| download | rtems-4f3e4f33db96df1182c0fb24c987fd9cbed95062.tar.bz2 | |
2003-02-20 Till Straumann <strauman@slac.stanford.edu>
PR 349/bsps
* console/console.c, console/uart.c, console/uart.h: implement
IOCTLs for the serial (UART) console to install/retrieve a BREAK-IRQ
callback. The callback routine (if installed) is invoked from the
UART ISR when a BREAK interrupt is detected. This can be used
e.g. to enforce a "hotkey" reboot a la vxWorks Ctrl-X (although we
use the serial line break condition) NOTE: The callback runs in
ISR context.
Diffstat (limited to '')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/shared/console/uart.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/powerpc/shared/console/uart.h b/c/src/lib/libbsp/powerpc/shared/console/uart.h index 6fe17d47e8..98399bf500 100644 --- a/c/src/lib/libbsp/powerpc/shared/console/uart.h +++ b/c/src/lib/libbsp/powerpc/shared/console/uart.h @@ -12,6 +12,9 @@ #include <bsp/irq.h> +#include <sys/ioctl.h> +#include <rtems/libio.h> + void BSP_uart_init(int uart, int baud, int hwFlow); void BSP_uart_set_baud(int aurt, int baud); void BSP_uart_intr_ctrl(int uart, int cmd); @@ -28,11 +31,32 @@ void BSP_uart_dbgisr_com1(void); void BSP_uart_dbgisr_com2(void); int BSP_uart_install_isr(int uart, rtems_irq_hdl handler); int BSP_uart_remove_isr(int uart, rtems_irq_hdl handler); +int BSP_uart_get_break_cb(int uart, rtems_libio_ioctl_args_t *arg); +int BSP_uart_set_break_cb(int uart, rtems_libio_ioctl_args_t *arg); extern unsigned BSP_poll_char_via_serial(void); extern void BSP_output_char_via_serial(int val); extern int BSPConsolePort; extern int BSPBaseBaud; + +/* Special IOCTLS to install a lowlevel 'BREAK' handler */ + +/* pass a BSP_UartBreakCb pointer to ioctl when retrieving + * or installing break callback + */ +typedef void (*BSP_UartBreakCbProc)(int uartMinor, + unsigned uartRBRLSRStatus, + void *termiosPrivatePtr, + void *private); + +typedef struct BSP_UartBreakCbRec_ { + BSP_UartBreakCbProc handler; /* NOTE NOTE this handler runs in INTERRUPT CONTEXT */ + void *private; /* closure pointer which is passed to the callback */ +} BSP_UartBreakCbRec, *BSP_UartBreakCb; + +#define BIOCGETBREAKCB _IOR('b',1,sizeof(BSP_UartBreakCbRec)) +#define BIOCSETBREAKCB _IOW('b',2,sizeof(BSP_UartBreakCbRec)) + /* * Command values for BSP_uart_intr_ctrl(), * values are strange in order to catch errors |