[thirdparty/binutils-gdb.git] / sim / bfin / dv-bfin_eppi.c

/* Blackfin Enhanced Parallel Port Interface (EPPI) model
   For "new style" PPIs on BF54x/etc... parts.

   Copyright (C) 2010-2015 Free Software Foundation, Inc.
   Contributed by Analog Devices, Inc.

   This file is part of simulators.

   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 3 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, see <http://www.gnu.org/licenses/>.  */

#include "config.h"

#include "sim-main.h"
#include "devices.h"
#include "dv-bfin_eppi.h"
#include "gui.h"

/* XXX: TX is merely a stub.  */

struct bfin_eppi
{
  /* This top portion matches common dv_bfin struct.  */
  bu32 base;
  struct hw *dma_master;
  bool acked;

  struct hw_event *handler;
  char saved_byte;
  int saved_count;

  /* GUI state.  */
  void *gui_state;
  int color;

  /* Order after here is important -- matches hardware MMR layout.  */
  bu16 BFIN_MMR_16(status);
  bu16 BFIN_MMR_16(hcount);
  bu16 BFIN_MMR_16(hdelay);
  bu16 BFIN_MMR_16(vcount);
  bu16 BFIN_MMR_16(vdelay);
  bu16 BFIN_MMR_16(frame);
  bu16 BFIN_MMR_16(line);
  bu16 BFIN_MMR_16(clkdiv);
  bu32 control, fs1w_hbl, fs1p_avpl, fsw2_lvb, fs2p_lavf, clip, err;
};
#define mmr_base()      offsetof(struct bfin_eppi, status)
#define mmr_offset(mmr) (offsetof(struct bfin_eppi, mmr) - mmr_base())

static const char * const mmr_names[] =
{
  "EPPI_STATUS", "EPPI_HCOUNT", "EPPI_HDELAY", "EPPI_VCOUNT", "EPPI_VDELAY",
  "EPPI_FRAME", "EPPI_LINE", "EPPI_CLKDIV", "EPPI_CONTROL", "EPPI_FS1W_HBL",
  "EPPI_FS1P_AVPL", "EPPI_FS2W_LVB", "EPPI_FS2P_LAVF", "EPPI_CLIP", "EPPI_ERR",
};
#define mmr_name(off) (mmr_names[(off) / 4] ? : "<INV>")

static void
bfin_eppi_gui_setup (struct bfin_eppi *eppi)
{
  /* If we are in RX mode, nothing to do.  */
  if (!(eppi->control & PORT_DIR))
    return;

  eppi->gui_state = bfin_gui_setup (eppi->gui_state,
				    eppi->control & PORT_EN,
				    eppi->hcount,
				    eppi->vcount,
				    eppi->color);
}

static unsigned
bfin_eppi_io_write_buffer (struct hw *me, const void *source,
			   int space, address_word addr, unsigned nr_bytes)
{
  struct bfin_eppi *eppi = hw_data (me);
  bu32 mmr_off;
  bu32 value;
  bu16 *value16p;
  bu32 *value32p;
  void *valuep;

  /* Invalid access mode is higher priority than missing register.  */
  if (!dv_bfin_mmr_require_16_32 (me, addr, nr_bytes, true))
    return 0;

  if (nr_bytes == 4)
    value = dv_load_4 (source);
  else
    value = dv_load_2 (source);

  mmr_off = addr - eppi->base;
  valuep = (void *)((unsigned long)eppi + mmr_base() + mmr_off);
  value16p = valuep;
  value32p = valuep;

  HW_TRACE_WRITE ();

  switch (mmr_off)
    {
    case mmr_offset(status):
      if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, true))
	return 0;
      dv_w1c_2 (value16p, value, 0x1ff);
      break;
    case mmr_offset(hcount):
    case mmr_offset(hdelay):
    case mmr_offset(vcount):
    case mmr_offset(vdelay):
    case mmr_offset(frame):
    case mmr_offset(line):
    case mmr_offset(clkdiv):
      if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, true))
	return 0;
      *value16p = value;
      break;
    case mmr_offset(control):
      *value32p = value;
      bfin_eppi_gui_setup (eppi);
      break;
    case mmr_offset(fs1w_hbl):
    case mmr_offset(fs1p_avpl):
    case mmr_offset(fsw2_lvb):
    case mmr_offset(fs2p_lavf):
    case mmr_offset(clip):
    case mmr_offset(err):
      if (!dv_bfin_mmr_require_32 (me, addr, nr_bytes, true))
	return 0;
      *value32p = value;
      break;
    default:
      dv_bfin_mmr_invalid (me, addr, nr_bytes, true);
      return 0;
    }

  return nr_bytes;
}

static unsigned
bfin_eppi_io_read_buffer (struct hw *me, void *dest,
			  int space, address_word addr, unsigned nr_bytes)
{
  struct bfin_eppi *eppi = hw_data (me);
  bu32 mmr_off;
  bu16 *value16p;
  bu32 *value32p;
  void *valuep;

  /* Invalid access mode is higher priority than missing register.  */
  if (!dv_bfin_mmr_require_16_32 (me, addr, nr_bytes, true))
    return 0;

  mmr_off = addr - eppi->base;
  valuep = (void *)((unsigned long)eppi + mmr_base() + mmr_off);
  value16p = valuep;
  value32p = valuep;

  HW_TRACE_READ ();

  switch (mmr_off)
    {
    case mmr_offset(status):
    case mmr_offset(hcount):
    case mmr_offset(hdelay):
    case mmr_offset(vcount):
    case mmr_offset(vdelay):
    case mmr_offset(frame):
    case mmr_offset(line):
    case mmr_offset(clkdiv):
      if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, false))
	return 0;
      dv_store_2 (dest, *value16p);
      break;
    case mmr_offset(control):
    case mmr_offset(fs1w_hbl):
    case mmr_offset(fs1p_avpl):
    case mmr_offset(fsw2_lvb):
    case mmr_offset(fs2p_lavf):
    case mmr_offset(clip):
    case mmr_offset(err):
      if (!dv_bfin_mmr_require_32 (me, addr, nr_bytes, false))
	return 0;
      dv_store_4 (dest, *value32p);
      break;
    default:
      dv_bfin_mmr_invalid (me, addr, nr_bytes, false);
      return 0;
    }

  return nr_bytes;
}

static unsigned
bfin_eppi_dma_read_buffer (struct hw *me, void *dest, int space,
			   unsigned_word addr, unsigned nr_bytes)
{
  HW_TRACE_DMA_READ ();
  return 0;
}

static unsigned
bfin_eppi_dma_write_buffer (struct hw *me, const void *source,
			    int space, unsigned_word addr,
			    unsigned nr_bytes,
			    int violate_read_only_section)
{
  struct bfin_eppi *eppi = hw_data (me);

  HW_TRACE_DMA_WRITE ();

  return bfin_gui_update (eppi->gui_state, source, nr_bytes);
}

static const struct hw_port_descriptor bfin_eppi_ports[] =
{
  { "stat", 0, 0, output_port, },
  { NULL, 0, 0, 0, },
};

static void
attach_bfin_eppi_regs (struct hw *me, struct bfin_eppi *eppi)
{
  address_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 three addr/size entries");

  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);

  if (attach_size != BFIN_MMR_EPPI_SIZE)
    hw_abort (me, "\"reg\" size must be %#x", BFIN_MMR_EPPI_SIZE);

  hw_attach_address (hw_parent (me),
		     0, attach_space, attach_address, attach_size, me);

  eppi->base = attach_address;
}

static void
bfin_eppi_finish (struct hw *me)
{
  struct bfin_eppi *eppi;
  const char *color;

  eppi = HW_ZALLOC (me, struct bfin_eppi);

  set_hw_data (me, eppi);
  set_hw_io_read_buffer (me, bfin_eppi_io_read_buffer);
  set_hw_io_write_buffer (me, bfin_eppi_io_write_buffer);
  set_hw_dma_read_buffer (me, bfin_eppi_dma_read_buffer);
  set_hw_dma_write_buffer (me, bfin_eppi_dma_write_buffer);
  set_hw_ports (me, bfin_eppi_ports);

  attach_bfin_eppi_regs (me, eppi);

  /* Initialize the EPPI.  */
  if (hw_find_property (me, "color"))
    color = hw_find_string_property (me, "color");
  else
    color = NULL;
  eppi->color = bfin_gui_color (color);
}

const struct hw_descriptor dv_bfin_eppi_descriptor[] =
{
  {"bfin_eppi", bfin_eppi_finish,},
  {NULL, NULL},
};
Commit	Line	Data
ef016f83 MF	1	/* Blackfin Enhanced Parallel Port Interface (EPPI) model
	2	For "new style" PPIs on BF54x/etc... parts.
	3
32d0add0	4	Copyright (C) 2010-2015 Free Software Foundation, Inc.
ef016f83 MF	5	Contributed by Analog Devices, Inc.
	6
	7	This file is part of simulators.
	8
	9	This program is free software; you can redistribute it and/or modify
	10	it under the terms of the GNU General Public License as published by
	11	the Free Software Foundation; either version 3 of the License, or
	12	(at your option) any later version.
	13
	14	This program is distributed in the hope that it will be useful,
	15	but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	GNU General Public License for more details.
	18
	19	You should have received a copy of the GNU General Public License
	20	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	21
	22	#include "config.h"
	23
	24	#include "sim-main.h"
	25	#include "devices.h"
	26	#include "dv-bfin_eppi.h"
	27	#include "gui.h"
	28
	29	/* XXX: TX is merely a stub. */
	30
	31	struct bfin_eppi
	32	{
	33	/* This top portion matches common dv_bfin struct. */
	34	bu32 base;
	35	struct hw *dma_master;
	36	bool acked;
	37
	38	struct hw_event *handler;
	39	char saved_byte;
	40	int saved_count;
	41
	42	/* GUI state. */
	43	void *gui_state;
	44	int color;
	45
	46	/* Order after here is important -- matches hardware MMR layout. */
	47	bu16 BFIN_MMR_16(status);
	48	bu16 BFIN_MMR_16(hcount);
	49	bu16 BFIN_MMR_16(hdelay);
	50	bu16 BFIN_MMR_16(vcount);
	51	bu16 BFIN_MMR_16(vdelay);
	52	bu16 BFIN_MMR_16(frame);
	53	bu16 BFIN_MMR_16(line);
	54	bu16 BFIN_MMR_16(clkdiv);
	55	bu32 control, fs1w_hbl, fs1p_avpl, fsw2_lvb, fs2p_lavf, clip, err;
	56	};
	57	#define mmr_base() offsetof(struct bfin_eppi, status)
	58	#define mmr_offset(mmr) (offsetof(struct bfin_eppi, mmr) - mmr_base())
	59
990d19fd MF	60	static const char * const mmr_names[] =
990d19fd MF	61	{
ef016f83 MF	62	"EPPI_STATUS", "EPPI_HCOUNT", "EPPI_HDELAY", "EPPI_VCOUNT", "EPPI_VDELAY",
	63	"EPPI_FRAME", "EPPI_LINE", "EPPI_CLKDIV", "EPPI_CONTROL", "EPPI_FS1W_HBL",
	64	"EPPI_FS1P_AVPL", "EPPI_FS2W_LVB", "EPPI_FS2P_LAVF", "EPPI_CLIP", "EPPI_ERR",
	65	};
	66	#define mmr_name(off) (mmr_names[(off) / 4] ? : "<INV>")
	67
	68	static void
	69	bfin_eppi_gui_setup (struct bfin_eppi *eppi)
	70	{
	71	/* If we are in RX mode, nothing to do. */
	72	if (!(eppi->control & PORT_DIR))
	73	return;
	74
	75	eppi->gui_state = bfin_gui_setup (eppi->gui_state,
	76	eppi->control & PORT_EN,
	77	eppi->hcount,
	78	eppi->vcount,
	79	eppi->color);
	80	}
	81
	82	static unsigned
	83	bfin_eppi_io_write_buffer (struct hw me, const void source,
	84	int space, address_word addr, unsigned nr_bytes)
	85	{
	86	struct bfin_eppi *eppi = hw_data (me);
	87	bu32 mmr_off;
	88	bu32 value;
	89	bu16 *value16p;
	90	bu32 *value32p;
	91	void *valuep;
	92
466b619e MF	93	/* Invalid access mode is higher priority than missing register. */
	94	if (!dv_bfin_mmr_require_16_32 (me, addr, nr_bytes, true))
	95	return 0;
	96
ef016f83 MF	97	if (nr_bytes == 4)
	98	value = dv_load_4 (source);
	99	else
	100	value = dv_load_2 (source);
	101
	102	mmr_off = addr - eppi->base;
	103	valuep = (void *)((unsigned long)eppi + mmr_base() + mmr_off);
	104	value16p = valuep;
	105	value32p = valuep;
	106
	107	HW_TRACE_WRITE ();
	108
	109	switch (mmr_off)
	110	{
	111	case mmr_offset(status):
466b619e MF	112	if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, true))
466b619e MF	113	return 0;
9922f803	114	dv_w1c_2 (value16p, value, 0x1ff);
ef016f83 MF	115	break;
	116	case mmr_offset(hcount):
	117	case mmr_offset(hdelay):
	118	case mmr_offset(vcount):
	119	case mmr_offset(vdelay):
	120	case mmr_offset(frame):
	121	case mmr_offset(line):
	122	case mmr_offset(clkdiv):
466b619e MF	123	if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, true))
466b619e MF	124	return 0;
ef016f83 MF	125	*value16p = value;
	126	break;
	127	case mmr_offset(control):
	128	*value32p = value;
	129	bfin_eppi_gui_setup (eppi);
	130	break;
	131	case mmr_offset(fs1w_hbl):
	132	case mmr_offset(fs1p_avpl):
	133	case mmr_offset(fsw2_lvb):
	134	case mmr_offset(fs2p_lavf):
	135	case mmr_offset(clip):
	136	case mmr_offset(err):
466b619e MF	137	if (!dv_bfin_mmr_require_32 (me, addr, nr_bytes, true))
466b619e MF	138	return 0;
ef016f83 MF	139	*value32p = value;
	140	break;
	141	default:
	142	dv_bfin_mmr_invalid (me, addr, nr_bytes, true);
466b619e	143	return 0;
ef016f83 MF	144	}
	145
	146	return nr_bytes;
	147	}
	148
	149	static unsigned
	150	bfin_eppi_io_read_buffer (struct hw me, void dest,
	151	int space, address_word addr, unsigned nr_bytes)
	152	{
	153	struct bfin_eppi *eppi = hw_data (me);
	154	bu32 mmr_off;
	155	bu16 *value16p;
	156	bu32 *value32p;
	157	void *valuep;
	158
466b619e MF	159	/* Invalid access mode is higher priority than missing register. */
	160	if (!dv_bfin_mmr_require_16_32 (me, addr, nr_bytes, true))
	161	return 0;
	162
ef016f83 MF	163	mmr_off = addr - eppi->base;
	164	valuep = (void *)((unsigned long)eppi + mmr_base() + mmr_off);
	165	value16p = valuep;
	166	value32p = valuep;
	167
	168	HW_TRACE_READ ();
	169
	170	switch (mmr_off)
	171	{
	172	case mmr_offset(status):
	173	case mmr_offset(hcount):
	174	case mmr_offset(hdelay):
	175	case mmr_offset(vcount):
	176	case mmr_offset(vdelay):
	177	case mmr_offset(frame):
	178	case mmr_offset(line):
	179	case mmr_offset(clkdiv):
466b619e MF	180	if (!dv_bfin_mmr_require_16 (me, addr, nr_bytes, false))
466b619e MF	181	return 0;
ef016f83 MF	182	dv_store_2 (dest, *value16p);
	183	break;
	184	case mmr_offset(control):
	185	case mmr_offset(fs1w_hbl):
	186	case mmr_offset(fs1p_avpl):
	187	case mmr_offset(fsw2_lvb):
	188	case mmr_offset(fs2p_lavf):
	189	case mmr_offset(clip):
	190	case mmr_offset(err):
466b619e MF	191	if (!dv_bfin_mmr_require_32 (me, addr, nr_bytes, false))
466b619e MF	192	return 0;
ef016f83 MF	193	dv_store_4 (dest, *value32p);
	194	break;
	195	default:
	196	dv_bfin_mmr_invalid (me, addr, nr_bytes, false);
466b619e	197	return 0;
ef016f83 MF	198	}
	199
	200	return nr_bytes;
	201	}
	202
	203	static unsigned
	204	bfin_eppi_dma_read_buffer (struct hw me, void dest, int space,
	205	unsigned_word addr, unsigned nr_bytes)
	206	{
	207	HW_TRACE_DMA_READ ();
	208	return 0;
	209	}
	210
	211	static unsigned
	212	bfin_eppi_dma_write_buffer (struct hw me, const void source,
	213	int space, unsigned_word addr,
	214	unsigned nr_bytes,
	215	int violate_read_only_section)
	216	{
	217	struct bfin_eppi *eppi = hw_data (me);
	218
	219	HW_TRACE_DMA_WRITE ();
	220
	221	return bfin_gui_update (eppi->gui_state, source, nr_bytes);
	222	}
	223
990d19fd MF	224	static const struct hw_port_descriptor bfin_eppi_ports[] =
990d19fd MF	225	{
ef016f83 MF	226	{ "stat", 0, 0, output_port, },
	227	{ NULL, 0, 0, 0, },
	228	};
	229
	230	static void
	231	attach_bfin_eppi_regs (struct hw me, struct bfin_eppi eppi)
	232	{
	233	address_word attach_address;
	234	int attach_space;
	235	unsigned attach_size;
	236	reg_property_spec reg;
	237
	238	if (hw_find_property (me, "reg") == NULL)
	239	hw_abort (me, "Missing \"reg\" property");
	240
	241	if (!hw_find_reg_array_property (me, "reg", 0, &reg))
	242	hw_abort (me, "\"reg\" property must contain three addr/size entries");
	243
	244	hw_unit_address_to_attach_address (hw_parent (me),
	245	&reg.address,
	246	&attach_space, &attach_address, me);
	247	hw_unit_size_to_attach_size (hw_parent (me), &reg.size, &attach_size, me);
	248
	249	if (attach_size != BFIN_MMR_EPPI_SIZE)
	250	hw_abort (me, "\"reg\" size must be %#x", BFIN_MMR_EPPI_SIZE);
	251
	252	hw_attach_address (hw_parent (me),
	253	0, attach_space, attach_address, attach_size, me);
	254
	255	eppi->base = attach_address;
	256	}
	257
	258	static void
	259	bfin_eppi_finish (struct hw *me)
	260	{
	261	struct bfin_eppi *eppi;
	262	const char *color;
	263
	264	eppi = HW_ZALLOC (me, struct bfin_eppi);
	265
	266	set_hw_data (me, eppi);
	267	set_hw_io_read_buffer (me, bfin_eppi_io_read_buffer);
	268	set_hw_io_write_buffer (me, bfin_eppi_io_write_buffer);
	269	set_hw_dma_read_buffer (me, bfin_eppi_dma_read_buffer);
	270	set_hw_dma_write_buffer (me, bfin_eppi_dma_write_buffer);
	271	set_hw_ports (me, bfin_eppi_ports);
	272
	273	attach_bfin_eppi_regs (me, eppi);
	274
	275	/* Initialize the EPPI. */
	276	if (hw_find_property (me, "color"))
	277	color = hw_find_string_property (me, "color");
	278	else
	279	color = NULL;
	280	eppi->color = bfin_gui_color (color);
	281	}
	282
81d126c3 MF	283	const struct hw_descriptor dv_bfin_eppi_descriptor[] =
81d126c3 MF	284	{
ef016f83 MF	285	{"bfin_eppi", bfin_eppi_finish,},
	286	{NULL, NULL},
	287	};