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mirror of https://sourceware.org/git/binutils-gdb.git synced 2024-12-27 04:52:05 +08:00
binutils-gdb/sim/bfin/dv-eth_phy.c
Andrew Burgess 1d506c26d9 Update copyright year range in header of all files managed by GDB
This commit is the result of the following actions:

  - Running gdb/copyright.py to update all of the copyright headers to
    include 2024,

  - Manually updating a few files the copyright.py script told me to
    update, these files had copyright headers embedded within the
    file,

  - Regenerating gdbsupport/Makefile.in to refresh it's copyright
    date,

  - Using grep to find other files that still mentioned 2023.  If
    these files were updated last year from 2022 to 2023 then I've
    updated them this year to 2024.

I'm sure I've probably missed some dates.  Feel free to fix them up as
you spot them.
2024-01-12 15:49:57 +00:00

209 lines
5.2 KiB
C

/* Ethernet Physical Receiver model.
Copyright (C) 2010-2024 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/>. */
/* This must come before any other includes. */
#include "defs.h"
#include "sim-main.h"
#include "devices.h"
#if defined (HAVE_LINUX_MII_H) && defined (HAVE_LINUX_TYPES_H)
/* Workaround old/broken linux headers. */
#include <linux/types.h>
#include <linux/mii.h>
#define REG_PHY_SIZE 0x20
struct eth_phy
{
bu32 base;
bu16 regs[REG_PHY_SIZE];
};
#define reg_base() offsetof(struct eth_phy, regs[0])
#define reg_offset(reg) (offsetof(struct eth_phy, reg) - reg_base())
#define reg_idx(reg) (reg_offset (reg) / 4)
static const char * const reg_names[] =
{
[MII_BMCR ] = "MII_BMCR",
[MII_BMSR ] = "MII_BMSR",
[MII_PHYSID1 ] = "MII_PHYSID1",
[MII_PHYSID2 ] = "MII_PHYSID2",
[MII_ADVERTISE ] = "MII_ADVERTISE",
[MII_LPA ] = "MII_LPA",
[MII_EXPANSION ] = "MII_EXPANSION",
#ifdef MII_CTRL1000
[MII_CTRL1000 ] = "MII_CTRL1000",
#endif
#ifdef MII_STAT1000
[MII_STAT1000 ] = "MII_STAT1000",
#endif
#ifdef MII_ESTATUS
[MII_ESTATUS ] = "MII_ESTATUS",
#endif
[MII_DCOUNTER ] = "MII_DCOUNTER",
[MII_FCSCOUNTER ] = "MII_FCSCOUNTER",
[MII_NWAYTEST ] = "MII_NWAYTEST",
[MII_RERRCOUNTER] = "MII_RERRCOUNTER",
[MII_SREVISION ] = "MII_SREVISION",
[MII_RESV1 ] = "MII_RESV1",
[MII_LBRERROR ] = "MII_LBRERROR",
[MII_PHYADDR ] = "MII_PHYADDR",
[MII_RESV2 ] = "MII_RESV2",
[MII_TPISTATUS ] = "MII_TPISTATUS",
[MII_NCONFIG ] = "MII_NCONFIG",
};
#define mmr_name(off) (reg_names[off] ? : "<INV>")
#define mmr_off reg_off
static unsigned
eth_phy_io_write_buffer (struct hw *me, const void *source,
int space, address_word addr, unsigned nr_bytes)
{
struct eth_phy *phy = hw_data (me);
bu16 reg_off;
bu16 value;
bu16 *valuep;
value = dv_load_2 (source);
reg_off = addr - phy->base;
valuep = (void *)((uintptr_t)phy + reg_base() + reg_off);
HW_TRACE_WRITE ();
switch (reg_off)
{
case MII_BMCR:
*valuep = value;
break;
case MII_PHYSID1:
case MII_PHYSID2:
/* Discard writes to these. */
break;
default:
/* XXX: Discard writes to unknown regs ? */
*valuep = value;
break;
}
return nr_bytes;
}
static unsigned
eth_phy_io_read_buffer (struct hw *me, void *dest,
int space, address_word addr, unsigned nr_bytes)
{
struct eth_phy *phy = hw_data (me);
bu16 reg_off;
bu16 *valuep;
reg_off = addr - phy->base;
valuep = (void *)((uintptr_t)phy + reg_base() + reg_off);
HW_TRACE_READ ();
switch (reg_off)
{
case MII_BMCR:
dv_store_2 (dest, *valuep);
break;
case MII_BMSR:
/* XXX: Let people control this ? */
*valuep = BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | BMSR_10HALF |
BMSR_ANEGCOMPLETE | BMSR_ANEGCAPABLE | BMSR_LSTATUS;
dv_store_2 (dest, *valuep);
break;
case MII_LPA:
/* XXX: Let people control this ? */
*valuep = LPA_100FULL | LPA_100HALF | LPA_10FULL | LPA_10HALF;
dv_store_2 (dest, *valuep);
break;
default:
dv_store_2 (dest, *valuep);
break;
}
return nr_bytes;
}
static void
attach_eth_phy_regs (struct hw *me, struct eth_phy *phy)
{
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 != REG_PHY_SIZE)
hw_abort (me, "\"reg\" size must be %#x", REG_PHY_SIZE);
hw_attach_address (hw_parent (me),
0, attach_space, attach_address, attach_size, me);
phy->base = attach_address;
}
static void
eth_phy_finish (struct hw *me)
{
struct eth_phy *phy;
phy = HW_ZALLOC (me, struct eth_phy);
set_hw_data (me, phy);
set_hw_io_read_buffer (me, eth_phy_io_read_buffer);
set_hw_io_write_buffer (me, eth_phy_io_write_buffer);
attach_eth_phy_regs (me, phy);
/* Initialize the PHY. */
phy->regs[MII_PHYSID1] = 0; /* Unassigned Vendor */
phy->regs[MII_PHYSID2] = 0xAD; /* Product */
}
#else
static void
eth_phy_finish (struct hw *me)
{
HW_TRACE ((me, "No linux/mii.h support found"));
}
#endif
const struct hw_descriptor dv_eth_phy_descriptor[] =
{
{"eth_phy", eth_phy_finish,},
{NULL, NULL},
};