// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
#include "emu.h"
#include "pci-smbus.h"
const device_type SMBUS = device_creator<smbus_device>;
DEVICE_ADDRESS_MAP_START(map, 32, smbus_device)
AM_RANGE(0x00, 0x03) AM_READWRITE8 (hst_sts_r, hst_sts_w, 0x000000ff)
AM_RANGE(0x00, 0x03) AM_READWRITE8 (hst_cnt_r, hst_cnt_w, 0x00ff0000)
AM_RANGE(0x00, 0x03) AM_READWRITE8 (hst_cmd_r, hst_cmd_w, 0xff000000)
AM_RANGE(0x04, 0x07) AM_READWRITE8 (xmit_slva_r, xmit_slva_w, 0x000000ff)
AM_RANGE(0x04, 0x07) AM_READWRITE8 (hst_d0_r, hst_d0_w, 0x0000ff00)
AM_RANGE(0x04, 0x07) AM_READWRITE8 (hst_d1_r, hst_d1_w, 0x00ff0000)
AM_RANGE(0x04, 0x07) AM_READWRITE8 (host_block_db_r, host_block_db_w, 0xff000000)
AM_RANGE(0x08, 0x0b) AM_READWRITE8 (pec_r, pec_w, 0x000000ff)
AM_RANGE(0x08, 0x0b) AM_READWRITE8 (rcv_slva_r, rcv_slva_w, 0x0000ff00)
AM_RANGE(0x08, 0x0b) AM_READWRITE16(slv_data_r, slv_data_w, 0xffff0000)
AM_RANGE(0x0c, 0x0f) AM_READWRITE8 (aux_sts_r, aux_sts_w, 0x000000ff)
AM_RANGE(0x0c, 0x0f) AM_READWRITE8 (aux_ctl_r, aux_ctl_w, 0x0000ff00)
AM_RANGE(0x0c, 0x0f) AM_READWRITE8 (smlink_pin_ctl_r, smlink_pin_ctl_w, 0x00ff0000)
AM_RANGE(0x0c, 0x0f) AM_READWRITE8 (smbus_pin_ctl_r, smbus_pin_ctl_w, 0xff000000)
AM_RANGE(0x10, 0x13) AM_READWRITE8 (slv_sts_r, slv_sts_w, 0x000000ff)
AM_RANGE(0x10, 0x13) AM_READWRITE8 (slv_cmd_r, slv_cmd_w, 0x0000ff00)
AM_RANGE(0x14, 0x17) AM_READ8 (notify_daddr_r, 0x000000ff)
AM_RANGE(0x14, 0x17) AM_READ8 (notify_dlow_r, 0x00ff0000)
AM_RANGE(0x14, 0x17) AM_READ8 (notify_dhigh_r, 0xff000000)
ADDRESS_MAP_END
smbus_device::smbus_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: pci_device(mconfig, SMBUS, "SMBUS interface", tag, owner, clock, "smbus", __FILE__)
{
}
void smbus_device::device_start()
{
pci_device::device_start();
skip_map_regs(4);
add_map(32, M_IO, FUNC(smbus_device::map));
}
void smbus_device::device_reset()
{
pci_device::device_reset();
hst_sts = 0x00;
hst_cnt = 0x00;
hst_cmd = 0x00;
xmit_slva = 0x00;
hst_d0 = 0x00;
hst_d1 = 0x00;
host_block_db = 0x00;
pec = 0x00;
rcv_slva = 0x44;
slv_data = 0x0000;
aux_sts = 0x00;
aux_ctl = 0x00;
smlink_pin_ctl = 0x00;
smbus_pin_ctl = 0x00;
slv_sts = 0x00;
slv_cmd = 0x00;
notify_daddr = 0x00;
notify_dlow = 0x00;
notify_dhigh = 0x00;
}
READ8_MEMBER (smbus_device::hst_sts_r)
{
return hst_sts;
}
WRITE8_MEMBER (smbus_device::hst_sts_w)
{
hst_sts &= ~data;
logerror("%s: hst_sts = %02x\n", tag(), hst_sts);
}
READ8_MEMBER (smbus_device::hst_cnt_r)
{
return hst_cnt;
}
WRITE8_MEMBER (smbus_device::hst_cnt_w)
{
hst_cnt = data;
logerror("%s: hst_cnt = %02x\n", tag(), hst_cnt);
if(xmit_slva != 0xa1)
hst_sts = 4;
else {
const uint8_t eeprom[256] = {
0x80, 0x08, 0x07, 0x0D, 0x0A, 0x02, 0x40, 0x00, 0x04, 0x50, 0x60, 0x00, 0x82, 0x08, 0x00, 0x01,
0x0E, 0x04, 0x08, 0x01, 0x02, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3C, 0x28, 0x3C, 0x28, 0x40,
0x60, 0x60, 0x40, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x37, 0x46, 0x28, 0x28, 0x55, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xCE,
0x7F, 0x7F, 0x9E, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x56, 0x53, 0x35, 0x31, 0x32, 0x4D, 0x42,
0x34, 0x30, 0x30, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
hst_sts = 2;
hst_d0 = eeprom[hst_cmd];
}
}
READ8_MEMBER (smbus_device::hst_cmd_r)
{
return hst_cmd;
}
WRITE8_MEMBER (smbus_device::hst_cmd_w)
{
hst_cmd = data;
logerror("%s: hst_cmd = %02x\n", tag(), hst_cmd);
}
READ8_MEMBER (smbus_device::xmit_slva_r)
{
return xmit_slva;
}
WRITE8_MEMBER (smbus_device::xmit_slva_w)
{
xmit_slva = data;
logerror("%s: xmit_slva = %02x\n", tag(), xmit_slva);
}
READ8_MEMBER (smbus_device::hst_d0_r)
{
return hst_d0;
}
WRITE8_MEMBER (smbus_device::hst_d0_w)
{
hst_d0 = data;
logerror("%s: hst_d0 = %02x\n", tag(), hst_d0);
}
READ8_MEMBER (smbus_device::hst_d1_r)
{
return hst_d1;
}
WRITE8_MEMBER (smbus_device::hst_d1_w)
{
hst_d1 = data;
logerror("%s: hst_d1 = %02x\n", tag(), hst_d1);
}
READ8_MEMBER (smbus_device::host_block_db_r)
{
return host_block_db;
}
WRITE8_MEMBER (smbus_device::host_block_db_w)
{
host_block_db = data;
logerror("%s: host_block_db = %02x\n", tag(), host_block_db);
}
READ8_MEMBER (smbus_device::pec_r)
{
return pec;
}
WRITE8_MEMBER (smbus_device::pec_w)
{
pec = data;
logerror("%s: pec = %02x\n", tag(), pec);
}
READ8_MEMBER (smbus_device::rcv_slva_r)
{
return rcv_slva;
}
WRITE8_MEMBER (smbus_device::rcv_slva_w)
{
rcv_slva = data;
logerror("%s: rcv_slva = %02x\n", tag(), rcv_slva);
}
READ16_MEMBER (smbus_device::slv_data_r)
{
return slv_data;
}
WRITE16_MEMBER(smbus_device::slv_data_w)
{
slv_data = data;
logerror("%s: slv_data = %02x\n", tag(), slv_data);
}
READ8_MEMBER (smbus_device::aux_sts_r)
{
return aux_sts;
}
WRITE8_MEMBER (smbus_device::aux_sts_w)
{
aux_sts = data;
logerror("%s: aux_sts = %02x\n", tag(), aux_sts);
}
READ8_MEMBER (smbus_device::aux_ctl_r)
{
return aux_ctl;
}
WRITE8_MEMBER (smbus_device::aux_ctl_w)
{
aux_ctl = data;
logerror("%s: aux_ctl = %02x\n", tag(), aux_ctl);
}
READ8_MEMBER (smbus_device::smlink_pin_ctl_r)
{
return smlink_pin_ctl;
}
WRITE8_MEMBER (smbus_device::smlink_pin_ctl_w)
{
smlink_pin_ctl = data;
logerror("%s: smlink_pin_ctl = %02x\n", tag(), smlink_pin_ctl);
}
READ8_MEMBER (smbus_device::smbus_pin_ctl_r)
{
return smbus_pin_ctl;
}
WRITE8_MEMBER (smbus_device::smbus_pin_ctl_w)
{
smbus_pin_ctl = data;
logerror("%s: smbus_pin_ctl = %02x\n", tag(), smbus_pin_ctl);
}
READ8_MEMBER (smbus_device::slv_sts_r)
{
return slv_sts;
}
WRITE8_MEMBER (smbus_device::slv_sts_w)
{
slv_sts = data;
logerror("%s: slv_sts = %02x\n", tag(), slv_sts);
}
READ8_MEMBER (smbus_device::slv_cmd_r)
{
return slv_cmd;
}
WRITE8_MEMBER (smbus_device::slv_cmd_w)
{
slv_cmd = data;
logerror("%s: slv_cmd = %02x\n", tag(), slv_cmd);
}
READ8_MEMBER (smbus_device::notify_daddr_r)
{
return notify_daddr;
}
READ8_MEMBER (smbus_device::notify_dlow_r)
{
return notify_dlow;
}
READ8_MEMBER (smbus_device::notify_dhigh_r)
{
return notify_dhigh;
}