remove #ifdef DEBUG by using macro. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
182 lines
4.4 KiB
C
182 lines
4.4 KiB
C
/*
|
|
* PC SMBus implementation
|
|
* splitted from acpi.c
|
|
*
|
|
* Copyright (c) 2006 Fabrice Bellard
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License version 2 as published by the Free Software Foundation.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
|
|
*/
|
|
#include "hw.h"
|
|
#include "pc.h"
|
|
#include "pm_smbus.h"
|
|
#include "pci.h"
|
|
#include "qemu-timer.h"
|
|
#include "sysemu.h"
|
|
#include "i2c.h"
|
|
#include "smbus.h"
|
|
#include "kvm.h"
|
|
|
|
/* no save/load? */
|
|
|
|
#define SMBHSTSTS 0x00
|
|
#define SMBHSTCNT 0x02
|
|
#define SMBHSTCMD 0x03
|
|
#define SMBHSTADD 0x04
|
|
#define SMBHSTDAT0 0x05
|
|
#define SMBHSTDAT1 0x06
|
|
#define SMBBLKDAT 0x07
|
|
|
|
//#define DEBUG
|
|
|
|
#ifdef DEBUG
|
|
# define SMBUS_DPRINTF(format, ...) printf(format, ## __VA_ARGS__)
|
|
#else
|
|
# define SMBUS_DPRINTF(format, ...) do { } while (0)
|
|
#endif
|
|
|
|
|
|
static void smb_transaction(PMSMBus *s)
|
|
{
|
|
uint8_t prot = (s->smb_ctl >> 2) & 0x07;
|
|
uint8_t read = s->smb_addr & 0x01;
|
|
uint8_t cmd = s->smb_cmd;
|
|
uint8_t addr = s->smb_addr >> 1;
|
|
i2c_bus *bus = s->smbus;
|
|
|
|
SMBUS_DPRINTF("SMBus trans addr=0x%02x prot=0x%02x\n", addr, prot);
|
|
switch(prot) {
|
|
case 0x0:
|
|
smbus_quick_command(bus, addr, read);
|
|
break;
|
|
case 0x1:
|
|
if (read) {
|
|
s->smb_data0 = smbus_receive_byte(bus, addr);
|
|
} else {
|
|
smbus_send_byte(bus, addr, cmd);
|
|
}
|
|
break;
|
|
case 0x2:
|
|
if (read) {
|
|
s->smb_data0 = smbus_read_byte(bus, addr, cmd);
|
|
} else {
|
|
smbus_write_byte(bus, addr, cmd, s->smb_data0);
|
|
}
|
|
break;
|
|
case 0x3:
|
|
if (read) {
|
|
uint16_t val;
|
|
val = smbus_read_word(bus, addr, cmd);
|
|
s->smb_data0 = val;
|
|
s->smb_data1 = val >> 8;
|
|
} else {
|
|
smbus_write_word(bus, addr, cmd, (s->smb_data1 << 8) | s->smb_data0);
|
|
}
|
|
break;
|
|
case 0x5:
|
|
if (read) {
|
|
s->smb_data0 = smbus_read_block(bus, addr, cmd, s->smb_data);
|
|
} else {
|
|
smbus_write_block(bus, addr, cmd, s->smb_data, s->smb_data0);
|
|
}
|
|
break;
|
|
default:
|
|
goto error;
|
|
}
|
|
return;
|
|
|
|
error:
|
|
s->smb_stat |= 0x04;
|
|
}
|
|
|
|
void smb_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
|
|
{
|
|
PMSMBus *s = opaque;
|
|
addr &= 0x3f;
|
|
SMBUS_DPRINTF("SMB writeb port=0x%04x val=0x%02x\n", addr, val);
|
|
switch(addr) {
|
|
case SMBHSTSTS:
|
|
s->smb_stat = 0;
|
|
s->smb_index = 0;
|
|
break;
|
|
case SMBHSTCNT:
|
|
s->smb_ctl = val;
|
|
if (val & 0x40)
|
|
smb_transaction(s);
|
|
break;
|
|
case SMBHSTCMD:
|
|
s->smb_cmd = val;
|
|
break;
|
|
case SMBHSTADD:
|
|
s->smb_addr = val;
|
|
break;
|
|
case SMBHSTDAT0:
|
|
s->smb_data0 = val;
|
|
break;
|
|
case SMBHSTDAT1:
|
|
s->smb_data1 = val;
|
|
break;
|
|
case SMBBLKDAT:
|
|
s->smb_data[s->smb_index++] = val;
|
|
if (s->smb_index > 31)
|
|
s->smb_index = 0;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
uint32_t smb_ioport_readb(void *opaque, uint32_t addr)
|
|
{
|
|
PMSMBus *s = opaque;
|
|
uint32_t val;
|
|
|
|
addr &= 0x3f;
|
|
switch(addr) {
|
|
case SMBHSTSTS:
|
|
val = s->smb_stat;
|
|
break;
|
|
case SMBHSTCNT:
|
|
s->smb_index = 0;
|
|
val = s->smb_ctl & 0x1f;
|
|
break;
|
|
case SMBHSTCMD:
|
|
val = s->smb_cmd;
|
|
break;
|
|
case SMBHSTADD:
|
|
val = s->smb_addr;
|
|
break;
|
|
case SMBHSTDAT0:
|
|
val = s->smb_data0;
|
|
break;
|
|
case SMBHSTDAT1:
|
|
val = s->smb_data1;
|
|
break;
|
|
case SMBBLKDAT:
|
|
val = s->smb_data[s->smb_index++];
|
|
if (s->smb_index > 31)
|
|
s->smb_index = 0;
|
|
break;
|
|
default:
|
|
val = 0;
|
|
break;
|
|
}
|
|
SMBUS_DPRINTF("SMB readb port=0x%04x val=0x%02x\n", addr, val);
|
|
return val;
|
|
}
|
|
|
|
void pm_smbus_init(DeviceState *parent, PMSMBus *smb)
|
|
{
|
|
smb->smbus = i2c_init_bus(parent, "i2c");
|
|
}
|