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Diffstat (limited to 'c/src/lib/libcpu/powerpc/ppc403/tty_drv/tty_drv.c')
-rw-r--r--c/src/lib/libcpu/powerpc/ppc403/tty_drv/tty_drv.c567
1 files changed, 0 insertions, 567 deletions
diff --git a/c/src/lib/libcpu/powerpc/ppc403/tty_drv/tty_drv.c b/c/src/lib/libcpu/powerpc/ppc403/tty_drv/tty_drv.c
deleted file mode 100644
index 3e79bbf9e4..0000000000
--- a/c/src/lib/libcpu/powerpc/ppc403/tty_drv/tty_drv.c
+++ /dev/null
@@ -1,567 +0,0 @@
-/*
- * This file contains the PowerPC 405GP tty driver.
- *
- * Derived from /c/src/lib/libbsp/i386/shared/comm/tty_drv.c
- *
- * Modifications to PPC405GP by Dennis Ehlin
- *
- */
-
-#define NO_BSP_INIT
-
-#include <stdio.h>
-#include <rtems/termiostypes.h>
-#include <termios.h>
-#include <assert.h>
-#include <rtems.h>
-#include <rtems/libio.h>
-#include "../irq/ictrl.h"
-#include <stdlib.h> /* for atexit() */
-#include <tty_drv.h>
-
-extern uint32_t bsp_serial_per_sec;
-extern bool bsp_serial_external_clock;
-extern bool bsp_serial_cts_rts;
-extern bool bsp_serial_xon_xoff;
-extern uint32_t bsp_serial_rate;
-
-struct ttyasync {
-/*---------------------------------------------------------------------------+
-| Data Register.
-+---------------------------------------------------------------------------*/
- unsigned char RBR; /* 0x00 */
- #define THR RBR
-/*---------------------------------------------------------------------------+
-| Interrupt registers
-+---------------------------------------------------------------------------*/
- unsigned char IER; /* Interrupt Enable Register 0x01 */
- #define IER_RCV 0x01
- #define IER_XMT 0x02
- #define IER_LS 0x04
- #define IER_MS 0x08
-
- unsigned char ISR; /* Interrupt Status Register 0x02 */
- #define ISR_MS 0x00
- #define ISR_nIP 0x01
- #define ISR_Tx 0x02
- #define ISR_Rx 0x04
- #define ISR_LS 0x06
- #define ISR_RxTO 0x0C
- #define ISR_64BFIFO 0x20
- #define ISR_FIFOworks 0x40
- #define ISR_FIFOen 0x80
-
-/*---------------------------------------------------------------------------+
-| FIFO Control registers
-+---------------------------------------------------------------------------*/
- #define FCR ISR
- #define FCR_FE 0x01 /* FIFO enable */
- #define FCR_CRF 0x02 /* Clear receive FIFO */
- #define FCR_CTF 0x04 /* Clear transmit FIFO */
- #define FCR_DMA 0x08 /* DMA mode select */
- #define FCR_F64 0x20 /* Enable 64 byte fifo (16750+) */
- #define FCR_RT14 0xC0 /* Set Rx trigger at 14 */
- #define FCR_RT8 0x80 /* Set Rx trigger at 8 */
- #define FCR_RT4 0x40 /* Set Rx trigger at 4 */
- #define FCR_RT1 0x00 /* Set Rx trigger at 1 */
-
-/*---------------------------------------------------------------------------+
-| Baud rate divisor registers
-+---------------------------------------------------------------------------*/
- #define DLL RBR
- #define DLM IER
-
-/*---------------------------------------------------------------------------+
-| Alternate function registers
-+---------------------------------------------------------------------------*/
- #define AFR ISR
-
-/*---------------------------------------------------------------------------+
-| Line control Register.
-+---------------------------------------------------------------------------*/
- unsigned char LCR; /* 0x03 */
- #define LCR_WL5 0x00 /* Word length 5 */
- #define LCR_WL6 0x01 /* Word length 6 */
- #define LCR_WL7 0x02 /* Word length 7 */
- #define LCR_WL8 0x03 /* Word length 8 */
-
- #define LCR_SB1 0x00 /* 1 stop bits */
- #define LCR_SB1_5 0x04 /* 1.5 stop bits , only valid with 5 bit words*/
- #define LCR_SB1_5 0x04 /* 2 stop bits */
-
- #define LCR_PN 0x00 /* Parity NONE */
- #define LCR_PE 0x0C /* Parity EVEN */
- #define LCR_PO 0x08 /* Parity ODD */
- #define LCR_PM 0x28 /* Forced "mark" parity */
- #define LCR_PS 0x38 /* Forced "space" parity */
-
- #define LCR_DL 0x80 /* Enable baudrate latch */
-
-/*---------------------------------------------------------------------------+
-| Modem control Register.
-+---------------------------------------------------------------------------*/
- unsigned char MCR; /* 0x04 */
- #define MCR_DTR 0x01
- #define MCR_RTS 0x02
- #define MCR_INT 0x08 /* Enable interrupts */
- #define MCR_LOOP 0x10 /* Loopback mode */
-
-/*---------------------------------------------------------------------------+
-| Line status Register.
-+---------------------------------------------------------------------------*/
- unsigned char LSR; /* 0x05 */
- #define LSR_RSR 0x01
- #define LSR_OE 0x02
- #define LSR_PE 0x04
- #define LSR_FE 0x08
- #define LSR_BI 0x10
- #define LSR_THE 0x20
- #define LSR_TEMT 0x40
- #define LSR_FIE 0x80
-
-/*---------------------------------------------------------------------------+
-| Modem status Register.
-+---------------------------------------------------------------------------*/
- unsigned char MSR; /* 0x06 */
- #define UART_MSR_DCTS 0x01
- #define UART_MSR_DDSR 0x02
- #define UART_MSR_TERI 0x04
- #define UART_MSR_DDCD 0x08
- #define UART_MSR_CTS 0x10
- #define UART_MSR_DSR 0x20
- #define UART_MSR_RI 0x40
- #define UART_MSR_CD 0x80
-
-/*---------------------------------------------------------------------------+
-| Scratch pad Register.
-+---------------------------------------------------------------------------*/
- unsigned char SCR; /* 0x07 */
-};
-
-
-#define TTY0_USE_UART 1 /* 0=UART0 1=UART1 */
-#define TTY0_UART_INTERNAL_CLOCK_DIVISOR 16
-#define TTY0_USE_INTERRUPT
-
-
-typedef volatile struct ttyasync *tty0pasync;
-static const tty0pasync tty0port = (tty0pasync)(0xEF600300 + (TTY0_USE_UART*0x100)); /* 0xEF600300 - port A, 0xEF600400 - port B */
-
-static void *tty0ttyp; /* handle for termios */
-
-
-static int
-tty0_round(double x)
-{
- return (int)((int)((x-(int)x)*1000)>500 ? x+1 : x);
-}
-
-static void
-tty0BaudSet(uint32_t baudrate)
-{
- uint32_t tmp;
-
- tmp = tty0_round( (double)bsp_serial_per_sec / (baudrate * 16) );
-
- tty0port->LCR = tty0port->LCR | LCR_DL;
-
- tty0port->DLL = tmp & 0xff;
- tty0port->DLM = tmp >> 8;
-
- tty0port->LCR = tty0port->LCR & ~LCR_DL;
-}
-
-/*
- * Hardware-dependent portion of tcsetattr().
- */
-static int
-tty0SetAttributes (int minor, const struct termios *t)
-{
- int baud;
-
- /* FIXME: check c_cflag & CRTSCTS for hardware flow control */
- /* FIXME: check and IMPLEMENT XON/XOFF */
- switch (t->c_ospeed) {
- default: baud = -1; break;
- case B50: baud = 50; break;
- case B75: baud = 75; break;
- case B110: baud = 110; break;
- case B134: baud = 134; break;
- case B150: baud = 150; break;
- case B200: baud = 200; break;
- case B300: baud = 300; break;
- case B600: baud = 600; break;
- case B1200: baud = 1200; break;
- case B1800: baud = 1800; break;
- case B2400: baud = 2400; break;
- case B4800: baud = 4800; break;
- case B9600: baud = 9600; break;
- case B19200: baud = 19200; break;
- case B38400: baud = 38400; break;
- case B57600: baud = 57600; break;
- case B115200: baud = 115200; break;
- case B230400: baud = 230400; break;
- case B460800: baud = 460800; break;
- }
- if (baud > 0) {
- tty0BaudSet(baud);
- }
- return 0;
-}
-
-#ifndef TTY0_USE_INTERRUPT
-static int
-tty0PollRead (int minor)
-{
-
- /* Wait for character */
- while ((tty0port->LSR & LSR_RSR)==0);
-
- return tty0port->RBR;
-}
-
-
-static ssize_t
-tty0PollWrite(int minor, const char *buf, size_t len)
-{
-
- while (len-- > 0) {
- while (!(tty0port->LSR & LSR_THE));
- tty0port->THR = *buf++;
- }
- return 0;
-}
-#endif
-
-/* ================ Termios support =================*/
-
-static ssize_t tty0InterruptWrite (int minor, const char *buf, size_t len)
-{
-
- if(len <= 0)
- {
- return 0;
- }
-
- /* Write character */
-
- tty0port->THR = (*buf &0xff);
- tty0port->IER |= IER_XMT; /* always enable tx interrupt */
-
- return 0;
-
-}
-
-static rtems_isr tty0serial_ISR(rtems_vector_number v)
-{
- char buf[128];
- int off, ret, vect;
-
- off = 0;
-
- for(;;)
- {
- vect = tty0port->ISR & 0x0f;
- if(vect & 1)
- {
- /* no more interrupts */
- if(off > 0) {
- /* Update rx buffer */
- rtems_termios_enqueue_raw_characters(tty0ttyp, buf, off );
-
- tty0port->IER |= IER_RCV; /* always enable rx interrupt */
- /*rtems_termios_rxirq_occured(tty0ttyp);*/
- }
- return;
- }
-
- vect = vect & 0xe; /*mask out all except interrupt pending*/
-
- switch(vect)
- {
-
- case ISR_Tx :
- /*
- * TX holding empty: we have to disable these interrupts
- * if there is nothing more to send.
- */
-
- /* If nothing else to send disable interrupts */
- ret = rtems_termios_dequeue_characters(tty0ttyp, 1);
-
- if ( ret == 0 ) {
- tty0port->IER &= ~IER_XMT;
- }
-
- break;
- case ISR_RxTO:
- case ISR_Rx :
-
- /* disable interrupts and notify termios */
- tty0port->IER &= ~IER_RCV;
-
- /* read all bytes in fifo*/
- while (( off < sizeof(buf) ) && ( tty0port->LSR & LSR_RSR ))
- {
- buf[off++] = tty0port->RBR;
- }
-
- break;
- case ISR_LS:
- /* RX error: eat character */
- /* printk("********* Error **********\n"); */
- break;
- default:
- /* Should not happen */
- /* printk("error vect=%x",vect); */
- return;
- }
- }
-
-}
-
-
-/*
- *
- * deinit TTY0
- *
- */
-static void tty0DeInit(void)
-{
- /*
- * disable interrupts for serial tty0port
- * set it to state to work with polling boot monitor, if any...
- */
-
- /* set up baud rate to original state */
- tty0BaudSet(bsp_serial_rate);
-
- tty0port->IER = 0;
-
-}
-
-/*
- *
- * init SPI
- *
- */
-static rtems_status_code
-tty0Initialize(void)
-{
- register unsigned tmp;
- rtems_isr_entry previous_isr; /* this is a dummy */
- unsigned char _ier;
- unsigned char _tmp;
-
- /*
- * Initialise the serial tty0port
- */
-
- /*
- * Select clock source and set uart internal clock divisor
- */
-
- __asm__ volatile ("mfdcr %0, 0x0b1" : "=r" (tmp)); /* CPC_CR0 0x0b1 */
-
- /* UART0 bit 24 0x80, UART1 bit 25 0x40 */
- tmp |= (bsp_serial_external_clock ? (TTY0_USE_UART ? 0x40 : 0x80) : 0);
-
- tmp |= (bsp_serial_external_clock ? 0: ((TTY0_UART_INTERNAL_CLOCK_DIVISOR -1) << 1));
-
- __asm__ volatile ("mtdcr 0x0b1, %0" : "=r" (tmp) : "0" (tmp)); /* CPC_CR0 0x0b1*/
-
- /* Disable tty0port interrupts while changing hardware */
- _ier = tty0port->IER;
- (void) _ier; /* avoid set but not used warning */
- tty0port->IER = 0;
-
- /* set up tty0port control: 8 bit,1 stop,no parity */
- tty0port->LCR = LCR_WL8 | LCR_SB1 | LCR_PN;
-
- /* set up baud rate */
- tty0BaudSet(bsp_serial_rate);
-
-
-#ifdef TTY0_USE_INTERRUPT
-
- /* add rx/tx isr to vector table */
-
- if (TTY0_USE_UART==0)
- ictrl_set_vector(tty0serial_ISR,PPC_IRQ_EXT_UART0,&previous_isr);
- else
- ictrl_set_vector(tty0serial_ISR,PPC_IRQ_EXT_UART1,&previous_isr);
-
- /* Enable and clear FIFO */
- tty0port->FCR = FCR_FE | FCR_CRF | FCR_CTF | FCR_RT14;
-
- /* Read status to clear them */
- _tmp = tty0port->LSR;
- _tmp = tty0port->RBR;
- _tmp = tty0port->MSR;
- (void) _tmp; /* avoid set but not used warning */
-
- /* Enable recive interrupts, don't enable TxInt yet */
- tty0port->IER=IER_RCV;
-
-#else
-
- tty0port->IER=_ier;
-
-#endif
-
- atexit(tty0DeInit);
-
- return RTEMS_SUCCESSFUL;
-}
-
-/*
- ***************
- * BOILERPLATE *
- ***************
- */
-
-/* console_initialize
- *
- * This routine initializes the console IO driver.
- *
- * Input parameters: NONE
- *
- * Output parameters: NONE
- *
- * Return values:
- */
-
-rtems_device_driver tty0_initialize(
- rtems_device_major_number major,
- rtems_device_minor_number minor,
- void *arg
-)
-{
- rtems_status_code status;
-
-
- /*
- * Set up TERMIOS
- */
- rtems_termios_initialize ();
-
- /*
- * Do device-specific initialization
- */
-
- /*tty0Initialize (); Moved this to open instead */
-
- /*
- * Register the device
- */
- status = rtems_io_register_name ("/dev/ttyS0", major, 0);
- if (status != RTEMS_SUCCESSFUL)
- rtems_fatal_error_occurred (status);
- return RTEMS_SUCCESSFUL;
-}
-
-
-/*
- * Open entry point
- */
-
-rtems_device_driver tty0_open(
- rtems_device_major_number major,
- rtems_device_minor_number minor,
- void * arg
-)
-{
- rtems_status_code sc;
-
-#ifdef TTY0_USE_INTERRUPT
-
- static const rtems_termios_callbacks intrCallbacks = {
- NULL, /* firstOpen */
- NULL, /* lastClose */
- NULL, /* pollRead */
- tty0InterruptWrite, /* write */
- tty0SetAttributes, /* setAttributes */
- NULL, /* stopRemoteTx */
- NULL, /* startRemoteTx */
- TERMIOS_TASK_DRIVEN /* outputUsesInterrupts */
- };
- rtems_libio_open_close_args_t *args = arg;
-
- tty0Initialize (); /* Initalize hardware */
-
- sc = rtems_termios_open (major, minor, arg, &intrCallbacks);
- tty0ttyp = args->iop->data1;
-
-#else
-
- static const rtems_termios_callbacks pollCallbacks = {
- NULL, /* firstOpen */
- NULL, /* lastClose */
- tty0PollRead, /* pollRead */
- tty0PollWrite, /* write */
- tty0SetAttributes, /* setAttributes */
- NULL, /* stopRemoteTx */
- NULL, /* startRemoteTx */
- 0 /* outputUsesInterrupts */
- };
-
- tty0Initialize (); /* Initalize hardware */
-
- sc = rtems_termios_open (major, minor, arg, &pollCallbacks);
-
-#endif
-
- return sc;
-}
-
-/*
- * Close entry point
- */
-
-rtems_device_driver tty0_close(
- rtems_device_major_number major,
- rtems_device_minor_number minor,
- void * arg
-)
-{
- return rtems_termios_close (arg);
-}
-
-/*
- * read bytes from the serial port. We only have stdin.
- */
-
-rtems_device_driver tty0_read(
- rtems_device_major_number major,
- rtems_device_minor_number minor,
- void * arg
-)
-{
- return rtems_termios_read (arg);
-}
-
-/*
- * write bytes to the serial port. Stdout and stderr are the same.
- */
-
-rtems_device_driver tty0_write(
- rtems_device_major_number major,
- rtems_device_minor_number minor,
- void * arg
-)
-{
- return rtems_termios_write (arg);
-}
-
-/*
- * IO Control entry point
- */
-
-rtems_device_driver tty0_control(
- rtems_device_major_number major,
- rtems_device_minor_number minor,
- void * arg
-)
-{
- return rtems_termios_ioctl (arg);
-}
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