search for: serial_tx_interrupt

...R | LSR_THRE; if ( uart->intr_works ) return; /* Interrupts work - no more polling */ - while ( (lsr = ns_read_reg(uart, LSR)) & (LSR_DR|LSR_THRE) ) + while ( (lsr = ns_read_reg(uart, LSR)) & mask ) { if ( lsr & LSR_THRE ) + { serial_tx_interrupt(port, regs); + mask &= ~LSR_THRE; + } if ( lsr & LSR_DR ) serial_rx_interrupt(port, regs); } _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

...ck = SPIN_LOCK_UNLOCKED } +static struct serial_port com[SERHND_IDX + 1] = { + [0 ... SERHND_IDX] = { + .rx_lock = SPIN_LOCK_UNLOCKED, + .tx_lock = SPIN_LOCK_UNLOCKED + } }; void serial_rx_interrupt(struct serial_port *port, struct cpu_user_regs *regs) @@ -81,6 +83,8 @@ void serial_tx_interrupt(struct serial_p port->driver->putc( port, port->txbuf[mask_serial_txbuf_idx(port->txbufc++)]); } + if ( i && port->driver->flush ) + port->driver->flush(port); } spin_unlock(&port->tx_lock);...

...gs) > +{ > +    struct serial_port *port = this_cpu(poll_port); > +    struct ns16550 *uart = port->uart; > >     if ( uart->intr_works ) >         return;     /* Interrupts work - no more polling */ > @@ -166,6 +168,16 @@ static void ns16550_poll(void *data) >         serial_tx_interrupt(port, regs); > >     set_timer(&uart->timer, NOW() + MILLISECS(uart->timeout_ms)); > +} > + > +static void ns16550_poll(void *data) > +{ > +    this_cpu(poll_port) = data; > +#ifdef run_in_exception_handler > +    run_in_exception_handler(__ns16550_poll); > +...

Since OMAP UART has a few distinct features than common 8250 UART, I re-implemented its driver rather than porting it based on ns16550.c. There are mainly two big differences between the implementations. First, OMAP UART introduces the concept of register access mode, which divides the register map into seperated space. Switching the access mode is then necessary when configuring it. Second, THRE