sim: bfin: add new SEC (system event controller) model (bf60x)

This models the new interrupt controller found on BF60x processors.

This is mostly a stub implementation at the moment -- shims for the
registers.  There is no port routing yet.

2012-08-28  Mike Frysinger  <vapier@gentoo.org>

	* configure.ac (SIM_AC_OPTION_HARDWARE): Add bfin_sec.
	* configure: Regenerated.
	* dv-bfin_sec.c, dv-bfin_sec.h: New device model.
	* machs.h (BFIN_MMR_SEC_BASE): Define.
	(BFIN_MMR_SEC_SIZE): Likewise.

4 files changed, 248 insertions, 0 deletions

diff --git a/sim/bfin/dv-bfin_sec.c b/sim/bfin/dv-bfin_sec.c
new file mode 100644
index 0000000..2ff8524
--- /dev/null
+++ b/sim/bfin/dv-bfin_sec.c
@@ -0,0 +1,221 @@
+/* Blackfin System Event Controller (SEC) model.
+
+   Copyright (C) 2010-2016 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_sec.h"
+#include "dv-bfin_cec.h"
+
+/* The SEC is made up of sub-devices (SCI/SFI/SSI), but for simplicity,
+   we have just one device model for all the pieces.  */
+
+struct bfin_sec
+{
+  /* We assume first element is the base.  */
+  bu32 base;
+
+  /* Order after here is important -- matches hardware MMR layout.  */
+
+  /* SEC: System Event Controller */
+  bu32 gctl;
+  bu32 gstat;
+  bu32 raise;
+  bu32 end;
+
+  /* SFI: System Fault Interface */
+  bu32 fctl;
+  bu32 fstat;
+  bu32 fsid;
+  bu32 fend;
+  bu32 fdly;
+  bu32 fdly_cur;
+  bu32 fsrdly;
+  bu32 fsrdly_cur;
+  bu32 fcopp;
+  bu32 fcopp_cur;
+  bu32 _pad0[0xf2];
+
+  /* SCI: System Core Interface */
+  struct
+  {
+    bu32 cctl;
+    bu32 cstat;
+    bu32 cpnd;
+    bu32 cact;
+    bu32 cpmsk;
+    bu32 cgmsk;
+    bu32 cplvl;
+    bu32 csid;
+    bu32 _pad[8];
+  } sci[2];
+  bu32 _pad1[0xe8];
+
+  /* SSI: System Source Interface */
+  struct
+  {
+    bu32 sctl;
+    bu32 sstat;
+  } ssi[140];
+};
+#define mmr_base()      offsetof(struct bfin_sec, gctl)
+#define mmr_offset(mmr) (offsetof(struct bfin_sec, mmr) - mmr_base())
+#define mmr_idx(mmr)    (mmr_offset (mmr) / 4)
+
+static const char * const mmr_names[] =
+{
+  /* SEC */
+  [mmr_idx (gctl)] =
+  "SEC_GCTL", "SEC_GSTAT", "SEC_RAISE", "SEC_END",
+  /* SFI */
+  [mmr_idx (fctl)] =
+  "SEC_FCTL", "SEC_FSTAT", "SEC_FSID", "SEC_FEND",
+  "SEC_FDLY", "SEC_FDLY_CUR", "SEC_FSRDLY",
+  "SEC_FSRDLY_CUR", "SEC_FCOPP", "SEC_FCOPP_CUR",
+  /* SCI */
+  [mmr_idx (sci[0].cctl)] =
+  "SEC_CCTL0", "SEC_CSTAT0", "SEC_CPND0", "SEC_CACT0",
+  "SEC_CPMSK0", "SEC_CGMSK0", "SEC_CPLVL0", "SEC_CSID0",
+  [mmr_idx (sci[1].cctl)] =
+  "SEC_CCTL1", "SEC_CSTAT1", "SEC_CPND1", "SEC_CACT1",
+  "SEC_CPMSK1", "SEC_CGMSK1", "SEC_CPLVL1", "SEC_CSID1",
+  /* SSI */
+};
+#define mmr_name(off) (mmr_names[(off) / 4] ? : "<INV>")
+
+static unsigned
+bfin_sec_io_write_buffer (struct hw *me, const void *source, int space,
+			  address_word addr, unsigned nr_bytes)
+{
+  struct bfin_sec *sec = hw_data (me);
+  bu32 mmr_off;
+  bu32 value;
+  bu16 *value16p;
+  bu32 *value32p;
+  void *valuep;
+
+  if (nr_bytes == 4)
+    value = dv_load_4 (source);
+  else
+    value = dv_load_2 (source);
+
+  mmr_off = addr - sec->base;
+  valuep = (void *)((unsigned long)sec + mmr_base() + mmr_off);
+  value16p = valuep;
+  value32p = valuep;
+
+  HW_TRACE_WRITE ();
+
+  switch (mmr_off)
+    {
+    default:
+      *value32p = value;
+      break;
+    }
+
+  return nr_bytes;
+}
+
+static unsigned
+bfin_sec_io_read_buffer (struct hw *me, void *dest, int space,
+			 address_word addr, unsigned nr_bytes)
+{
+  struct bfin_sec *sec = hw_data (me);
+  bu32 mmr_off;
+  bu16 *value16p;
+  bu32 *value32p;
+  void *valuep;
+
+  mmr_off = addr - sec->base;
+  valuep = (void *)((unsigned long)sec + mmr_base() + mmr_off);
+  value16p = valuep;
+  value32p = valuep;
+
+  HW_TRACE_READ ();
+
+  switch (mmr_off)
+    {
+    default:
+      if (nr_bytes == 2)
+	dv_store_2 (dest, 0);
+      else
+	dv_store_4 (dest, 0);
+      break;
+    }
+
+  return nr_bytes;
+}
+
+static void
+attach_bfin_sec_regs (struct hw *me, struct bfin_sec *sec)
+{
+  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_SEC_SIZE)
+    hw_abort (me, "\"reg\" size must be %#x", BFIN_MMR_SEC_SIZE);
+
+  hw_attach_address (hw_parent (me),
+		     0, attach_space, attach_address, attach_size, me);
+
+  sec->base = attach_address;
+}
+
+static void
+bfin_sec_finish (struct hw *me)
+{
+  struct bfin_sec *sec;
+  int i;
+
+  sec = HW_ZALLOC (me, struct bfin_sec);
+
+  set_hw_data (me, sec);
+  set_hw_io_read_buffer (me, bfin_sec_io_read_buffer);
+  set_hw_io_write_buffer (me, bfin_sec_io_write_buffer);
+
+  attach_bfin_sec_regs (me, sec);
+
+  /* Initialize the SEC.  */
+  for (i = 0; i < ARRAY_SIZE (sec->sci); ++i)
+    {
+      sec->sci[i].cpmsk = 0x000000FF;
+      sec->sci[i].cplvl = 0x00000007;
+    }
+}
+
+const struct hw_descriptor dv_bfin_sec_descriptor[] =
+{
+  {"bfin_sec", bfin_sec_finish,},
+  {NULL, NULL},
+};
diff --git a/sim/bfin/dv-bfin_sec.h b/sim/bfin/dv-bfin_sec.h
new file mode 100644
index 0000000..1afcfbc
--- /dev/null
+++ b/sim/bfin/dv-bfin_sec.h
@@ -0,0 +1,24 @@
+/* Blackfin System Event Controller (SEC) model.
+
+   Copyright (C) 2010-2016 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/>.  */
+
+#ifndef DV_BFIN_SEC_H
+#define DV_BFIN_SEC_H
+
+#endif
diff --git a/sim/bfin/local.mk b/sim/bfin/local.mk
index 8c2b58ac..3ba466e 100644
--- a/sim/bfin/local.mk
+++ b/sim/bfin/local.mk
@@ -74,6 +74,7 @@ noinst_PROGRAMS += %D%/run
 	bfin_pll \
 	bfin_ppi \
 	bfin_rtc \
+	bfin_sec \
 	bfin_sic \
 	bfin_spi \
 	bfin_trace \
diff --git a/sim/bfin/machs.h b/sim/bfin/machs.h
index b250517..377c3bb 100644
--- a/sim/bfin/machs.h
+++ b/sim/bfin/machs.h
@@ -76,6 +76,8 @@ extern const SIM_MACH * const bfin_sim_machs[];
 #define BFIN_MMR_PLL_SIZE		(4 * 6)
 #define BFIN_MMR_PPI_SIZE		(4 * 5)
 #define BFIN_MMR_RTC_SIZE		(4 * 6)
+#define BFIN_MMR_SEC_BASE		0xFFCA4000
+#define BFIN_MMR_SEC_SIZE		0x100
 #define BFIN_MMR_SIC_BASE		0xFFC00100
 #define BFIN_MMR_SIC_SIZE		0x100
 #define BFIN_MMR_SPI_SIZE		(4 * 7)