Initial creation of sourceware repository

1 files changed, 0 insertions, 595 deletions

diff --git a/sim/mips/dv-tx3904sio.c b/sim/mips/dv-tx3904sio.c
deleted file mode 100644
index 405f072a7ae..00000000000
--- a/sim/mips/dv-tx3904sio.c
+++ /dev/null
@@ -1,595 +0,0 @@
-/*  This file is part of the program GDB, the GNU debugger.
-    
-    Copyright (C) 1998 Free Software Foundation, Inc.
-    Contributed by Cygnus Solutions.
-    
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-    
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-    
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-    
-    */
-
-
-#include "sim-main.h"
-#include "hw-main.h"
-#include "dv-sockser.h"
-
-
-
-/* DEVICE
-
-   
-   tx3904sio - tx3904 serial I/O
-
-   
-   DESCRIPTION
-
-   
-   Implements one tx3904 serial I/O controller described in the tx3904
-   user guide.  Three instances are required for SIO0 and SIO1 within
-   the tx3904, at different base addresses.
-
-   Both internal and system clocks are synthesized as divided versions
-   of the simulator clock.
-   
-   There is no support for:
-    - CTS/RTS flow control
-    - baud rate emulation - use infinite speed instead
-    - general frame format - use 8N1
-    - multi-controller system
-    - DMA - use interrupt-driven or polled-I/O instead
-
-
-   PROPERTIES
-
-
-   reg <base> <length>
-
-   Base of SIO control register bank.  <length> must equal 0x100.
-   Register offsets:       0: SLCR: line control register
-                           4: SLSR: line status register
-                           8: SDICR: DMA/interrupt control register
-                          12: SDISR: DMA/interrupt status register
-                          16: SFCR: FIFO control register
-			  20: SBGR: baud rate control register
-			  32: transfer FIFO buffer
-			  48: transfer FIFO buffer
-
-   backend {tcp | stdio}
-
-   Use dv-sockser TCP-port backend or stdio for backend.  Default: stdio.
-
-
-
-   PORTS
-
-
-   int (output)
-
-   Interrupt port.  An event is generated when a timer interrupt
-   occurs.
-
-
-   reset (input)
-
-   Reset port.
-
-   */
-
-
-
-/* static functions */
-
-struct tx3904sio_fifo;
-
-static void tx3904sio_tickle(struct hw*);
-static int tx3904sio_fifo_nonempty(struct hw*, struct tx3904sio_fifo*);
-static char tx3904sio_fifo_pop(struct hw*, struct tx3904sio_fifo*);
-static void tx3904sio_fifo_push(struct hw*, struct tx3904sio_fifo*, char);
-static void tx3904sio_fifo_reset(struct hw*, struct tx3904sio_fifo*);
-
-
-
-/* register numbers; each is one word long */
-enum 
-{
-  SLCR_REG = 0,
-  SLSR_REG = 1,
-  SDICR_REG = 2,
-  SDISR_REG = 3,
-  SFCR_REG = 4,
-  SBGR_REG = 5,
-  TFIFO_REG = 8,
-  SFIFO_REG = 12,
-};
-
-
-
-/* port ID's */
-
-enum
- {
-  RESET_PORT,
-  INT_PORT,
-};
-
-
-static const struct hw_port_descriptor tx3904sio_ports[] = 
-{
-  { "int", INT_PORT, 0, output_port, },
-  { "reset", RESET_PORT, 0, input_port, },
-  { NULL, },
-};
-
-
-
-/* Generic FIFO */
-struct tx3904sio_fifo 
-{
-  int size, used;
-  unsigned_1 *buffer;
-};
-
-
-
-/* The timer/counter register internal state.  Note that we store
-   state using the control register images, in host endian order. */
-
-struct tx3904sio 
-{
-  address_word base_address; /* control register base */
-  enum {sio_tcp, sio_stdio} backend; /* backend */
-
-  struct tx3904sio_fifo rx_fifo, tx_fifo; /* FIFOs */
-
-  unsigned_4 slcr;
-#define SLCR_WR_MASK        0xe17f0000U
-#define SLCR_SET_BYTE(c,o,b) ((c)->slcr = SLCR_WR_MASK & (((c)->slcr & ~LSMASK32((o)*8+7,(o)*8)) | ((b)<< (o)*8)))
-  unsigned_4 slsr;
-#define SLSR_WR_MASK        0x00000000 /* UFER/UPER/UOER unimplemented */
-  unsigned_4 sdicr;
-#define SDICR_WR_MASK       0x000f0000U
-#define SDICR_SET_BYTE(c,o,b) ((c)->sdicr = SDICR_WR_MASK & (((c)->sdicr & ~LSMASK32((o)*8+7,(o)*8)) | ((b)<< (o)*8)))
-#define SDICR_GET_SDMAE(c)  ((c)->sdicr & 0x00080000)
-#define SDICR_GET_ERIE(c)   ((c)->sdicr & 0x00040000)
-#define SDICR_GET_TDIE(c)   ((c)->sdicr & 0x00020000)
-#define SDICR_GET_RDIE(c)   ((c)->sdicr & 0x00010000)
-  unsigned_4 sdisr;
-#define SDISR_WR_MASK       0x00070000U
-#define SDISR_SET_BYTE(c,o,b) ((c)->sdisr = SDISR_WR_MASK & (((c)->sdisr & ~LSMASK32((o)*8+7,(o)*8)) | ((b)<< (o)*8)))
-#define SDISR_GET_TDIS(c)   ((c)->sdisr & 0x00020000)
-#define SDISR_SET_TDIS(c)   ((c)->sdisr |= 0x00020000)
-#define SDISR_GET_RDIS(c)   ((c)->sdisr & 0x00010000)
-#define SDISR_SET_RDIS(c)   ((c)->sdisr |= 0x00010000)
-  unsigned_4 sfcr;
-#define SFCR_WR_MASK       0x001f0000U
-#define SFCR_SET_BYTE(c,o,b) ((c)->sfcr = SFCR_WR_MASK & (((c)->sfcr & ~LSMASK32((o)*8+7,(o)*8)) | ((b)<< (o)*8)))
-#define SFCR_GET_TFRST(c)   ((c)->sfcr & 0x00040000)
-#define SFCR_GET_RFRST(c)   ((c)->sfcr & 0x00020000)
-#define SFCR_GET_FRSTE(c)   ((c)->sfcr & 0x00010000)
-  unsigned_4 sbgr;
-#define SBGR_WR_MASK       0x03ff0000U
-#define SBGR_SET_BYTE(c,o,b) ((c)->sbgr = SBGR_WR_MASK & (((c)->sbgr & ~LSMASK32((o)*8+7,(o)*8)) | ((b)<< (o)*8)))
-};
-
-
-
-/* Finish off the partially created hw device.  Attach our local
-   callbacks.  Wire up our port names etc */
-
-static hw_io_read_buffer_method tx3904sio_io_read_buffer;
-static hw_io_write_buffer_method tx3904sio_io_write_buffer;
-static hw_port_event_method tx3904sio_port_event;
-
-
-static void
-attach_tx3904sio_regs (struct hw *me,
-		      struct tx3904sio *controller)
-{
-  unsigned_word attach_address;
-  int attach_space;
-  unsigned attach_size;
-  reg_property_spec reg;
-
-  if (hw_find_property (me, "reg") == NULL)
-    hw_abort (me, "Missing \"reg\" property");
-
-  if (!hw_find_reg_array_property (me, "reg", 0, &reg))
-    hw_abort (me, "\"reg\" property must contain one addr/size entry");
-
-  hw_unit_address_to_attach_address (hw_parent (me),
-				     &reg.address,
-				     &attach_space,
-				     &attach_address,
-				     me);
-  hw_unit_size_to_attach_size (hw_parent (me),
-			       &reg.size,
-			       &attach_size, me);
-
-  hw_attach_address (hw_parent (me), 0,
-		     attach_space, attach_address, attach_size,
-		     me);
-
-  if(hw_find_property(me, "backend") != NULL)
-    {
-      const char* value = hw_find_string_property(me, "backend");
-      if(! strcmp(value, "tcp"))
-	controller->backend = sio_tcp;
-      else if(! strcmp(value, "stdio"))
-	controller->backend = sio_stdio;
-      else
-	hw_abort(me, "illegal value for backend parameter `%s': use tcp or stdio", value);
-    }
-
-  controller->base_address = attach_address;
-}
-
-
-static void
-tx3904sio_finish (struct hw *me)
-{
-  struct tx3904sio *controller;
-
-  controller = HW_ZALLOC (me, struct tx3904sio);
-  set_hw_data (me, controller);
-  set_hw_io_read_buffer (me, tx3904sio_io_read_buffer);
-  set_hw_io_write_buffer (me, tx3904sio_io_write_buffer);
-  set_hw_ports (me, tx3904sio_ports);
-  set_hw_port_event (me, tx3904sio_port_event);
-
-  /* Preset defaults */
-  controller->backend = sio_stdio;
-
-  /* Attach ourself to our parent bus */
-  attach_tx3904sio_regs (me, controller);
-
-  /* Initialize to reset state */
-  tx3904sio_fifo_reset(me, & controller->rx_fifo);
-  tx3904sio_fifo_reset(me, & controller->tx_fifo);
-  controller->slsr = controller->sdicr
-    = controller->sdisr = controller->sfcr
-    = controller->sbgr = 0;
-  controller->slcr = 0x40000000; /* set TWUB */
-  controller->sbgr = 0x03ff0000; /* set BCLK=3, BRD=FF */
-}
-
-
-
-/* An event arrives on an interrupt port */
-
-static void
-tx3904sio_port_event (struct hw *me,
-		     int my_port,
-		     struct hw *source,
-		     int source_port,
-		     int level)
-{
-  struct tx3904sio *controller = hw_data (me);
-
-  switch (my_port)
-    {
-    case RESET_PORT:
-      {
-	HW_TRACE ((me, "reset"));
-
-	tx3904sio_fifo_reset(me, & controller->rx_fifo);
-	tx3904sio_fifo_reset(me, & controller->tx_fifo);
-	controller->slsr = controller->sdicr
-	  = controller->sdisr = controller->sfcr
-	  = controller->sbgr = 0;
-	controller->slcr = 0x40000000; /* set TWUB */
-	controller->sbgr = 0x03ff0000; /* set BCLK=3, BRD=FF */
-	break;
-      }
-
-    default:
-      hw_abort (me, "Event on unknown port %d", my_port);
-      break;
-    }
-}
-
-
-/* generic read/write */
-
-static unsigned
-tx3904sio_io_read_buffer (struct hw *me,
-			 void *dest,
-			 int space,
-			 unsigned_word base,
-			 unsigned nr_bytes)
-{
-  struct tx3904sio *controller = hw_data (me);
-  unsigned byte;
-
-  HW_TRACE ((me, "read 0x%08lx %d", (long) base, (int) nr_bytes));
-
-  /* tickle fifos */
-  tx3904sio_tickle(me);
-
-  for (byte = 0; byte < nr_bytes; byte++)
-    {
-      address_word address = base + byte;
-      int reg_number = (address - controller->base_address) / 4;
-      int reg_offset = 3 - (address - controller->base_address) % 4;
-      unsigned_4 register_value; /* in target byte order */
-
-      /* fill in entire register_value word */
-      switch (reg_number)
-	{
-	case SLCR_REG: register_value = controller->slcr; break;
-	case SLSR_REG: register_value = controller->slsr; break;
-	case SDICR_REG: register_value = controller->sdicr; break;
-	case SDISR_REG: register_value = controller->sdisr; break;
-	case SFCR_REG: register_value = controller->sfcr; break;
-	case SBGR_REG: register_value = controller->sbgr; break;
-	case TFIFO_REG: register_value = 0; break;
-	case SFIFO_REG:
-	  /* consume rx fifo for MS byte */
-	  if(reg_offset == 3 && tx3904sio_fifo_nonempty(me, & controller->rx_fifo))
-	    register_value = (tx3904sio_fifo_pop(me, & controller->rx_fifo) << 24);
-	  else
-	    register_value = 0;
-	  break;
-	default: register_value = 0;
-	}
-
-      /* write requested byte out */
-      memcpy ((char*) dest + byte, ((char*)& register_value)+reg_offset, 1);
-    }
-
-  return nr_bytes;
-}     
-
-
-
-static unsigned
-tx3904sio_io_write_buffer (struct hw *me,
-			  const void *source,
-			  int space,
-			  unsigned_word base,
-			  unsigned nr_bytes)
-{
-  struct tx3904sio *controller = hw_data (me);
-  unsigned byte;
-
-  HW_TRACE ((me, "write 0x%08lx %d", (long) base, (int) nr_bytes));
-  for (byte = 0; byte < nr_bytes; byte++)
-    {
-      address_word address = base + byte;
-      unsigned_1 write_byte = ((const unsigned char*) source)[byte];
-      int reg_number = (address - controller->base_address) / 4;
-      int reg_offset = 3 - (address - controller->base_address) % 4;
-
-      HW_TRACE ((me, "byte %d %02x", reg_offset, write_byte));
-
-      /* fill in entire register_value word */
-      switch (reg_number)
-	{
-	case SLCR_REG:
-	  SLCR_SET_BYTE(controller, reg_offset, write_byte);
-	  break;
-
-	case SLSR_REG: /* unwriteable */ break;
-
-	case SDICR_REG:
-	  {
-	    unsigned_4 last_int, next_int;
-	    
-	    /* deassert interrupt upon clear */
-	    last_int = controller->sdisr & controller->sdicr;
-	    /* HW_TRACE ((me, "sdicr - sdisr %08x sdicr %08x",
-	       controller->sdisr, controller->sdicr)); */
-	    SDICR_SET_BYTE(controller, reg_offset, write_byte);
-	    /* HW_TRACE ((me, "sdicr + sdisr %08x sdicr %08x",
-	       controller->sdisr, controller->sdicr)); */
-	    next_int = controller->sdisr & controller->sdicr;
-	    
-	    if(SDICR_GET_SDMAE(controller))
-	      hw_abort(me, "Cannot support DMA-driven sio.");
-
-	    if(~last_int & next_int) /* any bits set? */
-	      hw_port_event(me, INT_PORT, 1);
-	    if(last_int & ~next_int) /* any bits cleared? */
-	      hw_port_event(me, INT_PORT, 0);
-	  }
-	break;
-
-	case SDISR_REG:
-	  {
-	    unsigned_4 last_int, next_int;
-
-	    /* deassert interrupt upon clear */
-	    last_int = controller->sdisr & controller->sdicr;
-	    /* HW_TRACE ((me, "sdisr - sdisr %08x sdicr %08x", 
-	       controller->sdisr, controller->sdicr)); */
-	    SDISR_SET_BYTE(controller, reg_offset, write_byte);
-	    /* HW_TRACE ((me, "sdisr + sdisr %08x sdicr %08x", 
-	       controller->sdisr, controller->sdicr)); */
-	    next_int = controller->sdisr & controller->sdicr;
-
-	    if(~last_int & next_int) /* any bits set? */
-	      hw_port_event(me, INT_PORT, 1);
-	    if(last_int & ~next_int) /* any bits cleared? */
-	      hw_port_event(me, INT_PORT, 0);
-	  }
-	break;
-	
-	case SFCR_REG:
-	  SFCR_SET_BYTE(controller, reg_offset, write_byte);
-	  if(SFCR_GET_FRSTE(controller))
-	    {
-	      if(SFCR_GET_TFRST(controller)) tx3904sio_fifo_reset(me, & controller->tx_fifo);
-	      if(SFCR_GET_RFRST(controller)) tx3904sio_fifo_reset(me, & controller->rx_fifo);
-	    }
-	  break;
-	  
-	case SBGR_REG:
-	  SBGR_SET_BYTE(controller, reg_offset, write_byte);
-	  break;
-	  
-	case SFIFO_REG: /* unwriteable */ break;
-	  
-	case TFIFO_REG: 
-	  if(reg_offset == 3) /* first byte */
-	    tx3904sio_fifo_push(me, & controller->tx_fifo, write_byte);
-	  break;
-
-	default: 
-	  HW_TRACE ((me, "write to illegal register %d", reg_number));
-	}
-    } /* loop over bytes */
-
-  /* tickle fifos */
-  tx3904sio_tickle(me);
-
-  return nr_bytes;
-}     
-
-
-
-
-
-
-/* Send enqueued characters from tx_fifo and trigger TX interrupt.
-Receive characters into rx_fifo and trigger RX interrupt. */
-void
-tx3904sio_tickle(struct hw *me)
-{
-  struct tx3904sio* controller = hw_data(me);
-  int c;
-  char cc;
-  unsigned_4 last_int, next_int;
-
-  /* HW_TRACE ((me, "tickle backend: %02x", controller->backend)); */
-  switch(controller->backend) 
-    {
-    case sio_tcp:
-
-      while(tx3904sio_fifo_nonempty(me, & controller->tx_fifo))
-	{
-	  cc = tx3904sio_fifo_pop(me, & controller->tx_fifo);
-	  dv_sockser_write(hw_system(me), cc);
-	  HW_TRACE ((me, "tcp output: %02x", cc));
-	}
-
-      c = dv_sockser_read(hw_system(me));
-      while(c != -1)
-	{
-	  cc = (char) c;
-	  HW_TRACE ((me, "tcp input: %02x", cc));
-	  tx3904sio_fifo_push(me, & controller->rx_fifo, cc);
-	  c = dv_sockser_read(hw_system(me));
-	}
-      break;
-
-    case sio_stdio:
-
-      while(tx3904sio_fifo_nonempty(me, & controller->tx_fifo))
-	{
-	  cc = tx3904sio_fifo_pop(me, & controller->tx_fifo);
-	  sim_io_write_stdout(hw_system(me), & cc, 1);
-	  HW_TRACE ((me, "stdio output: %02x", cc));
-	}
-
-      c = sim_io_poll_read(hw_system(me), 0 /* stdin */, & cc, 1);
-      while(c == 1)
-	{
-	  HW_TRACE ((me, "stdio input: %02x", cc));
-	  tx3904sio_fifo_push(me, & controller->rx_fifo, cc);
-	  c = sim_io_poll_read(hw_system(me), 0 /* stdin */, & cc, 1);
-	}
-
-      break;
-
-    default:
-      hw_abort(me, "Illegal backend mode: %d", controller->backend);
-    }
-
-  /* Update RDIS / TDIS flags */
-  last_int = controller->sdisr & controller->sdicr;
-  /* HW_TRACE ((me, "tickle - sdisr %08x sdicr %08x", controller->sdisr, controller->sdicr)); */
-  if(tx3904sio_fifo_nonempty(me, & controller->rx_fifo))
-    SDISR_SET_RDIS(controller);
-  if(! tx3904sio_fifo_nonempty(me, & controller->tx_fifo))
-    SDISR_SET_TDIS(controller);
-  next_int = controller->sdisr & controller->sdicr;
-  /* HW_TRACE ((me, "tickle + sdisr %08x sdicr %08x", controller->sdisr, controller->sdicr)); */
-
-  if(~last_int & next_int) /* any bits set? */
-    hw_port_event(me, INT_PORT, 1);
-  if(last_int & ~next_int) /* any bits cleared? */
-    hw_port_event(me, INT_PORT, 0);
-}
-
-
-
-
-int
-tx3904sio_fifo_nonempty(struct hw* me, struct tx3904sio_fifo* fifo)
-{
-  /* HW_TRACE ((me, "fifo used: %d", fifo->used)); */
-  return(fifo->used > 0);
-}
-
-
-char
-tx3904sio_fifo_pop(struct hw* me, struct tx3904sio_fifo* fifo)
-{
-  char it;
-  ASSERT(fifo->used > 0);
-  ASSERT(fifo->buffer != NULL);
-  it = fifo->buffer[0];
-  memcpy(& fifo->buffer[0], & fifo->buffer[1], fifo->used - 1);
-  fifo->used --;
-  /* HW_TRACE ((me, "pop fifo -> %02x", it)); */
-  return it;
-}
-
-
-void
-tx3904sio_fifo_push(struct hw* me, struct tx3904sio_fifo* fifo, char it)
-{
-  /* HW_TRACE ((me, "push %02x -> fifo", it)); */
-  if(fifo->size == fifo->used) /* full */
-    {
-      int next_size = fifo->size * 2 + 16;
-      char* next_buf = zalloc(next_size);
-      memcpy(next_buf, fifo->buffer, fifo->used);
-
-      if(fifo->buffer != NULL) zfree(fifo->buffer);
-      fifo->buffer = next_buf;
-      fifo->size = next_size;
-    }
-
-  fifo->buffer[fifo->used] = it;
-  fifo->used ++;
-}
-
-
-void
-tx3904sio_fifo_reset(struct hw* me, struct tx3904sio_fifo* fifo)
-{
-  /* HW_TRACE ((me, "reset fifo")); */
-  fifo->used = 0;
-  fifo->size = 0;
-  zfree(fifo->buffer);
-  fifo->buffer = 0;
-}
-
-
-
-
-const struct hw_descriptor dv_tx3904sio_descriptor[] = {
-  { "tx3904sio", tx3904sio_finish, },
-  { NULL },
-};