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PIIX4 SMBus host, EEPROM device emulation, by Ed Swierk.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2379 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-02-02 03:13:18 +00:00
parent 4a109bfbca
commit 3fffc2234f
6 changed files with 330 additions and 1 deletions
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2
Makefile.target
View File

@ -370,7 +370,7 @@ ifeq ($(TARGET_BASE_ARCH), i386)
VL_OBJS+= ide.o pckbd.o ps2.o vga.o $(SOUND_HW) dma.o $(AUDIODRV)
VL_OBJS+= fdc.o mc146818rtc.o serial.o i8259.o i8254.o pcspk.o pc.o
VL_OBJS+= cirrus_vga.o mixeng.o apic.o parallel.o acpi.o piix_pci.o
VL_OBJS+= usb-uhci.o
VL_OBJS+= usb-uhci.o smbus_eeprom.o
CPPFLAGS += -DHAS_AUDIO
endif
ifeq ($(TARGET_BASE_ARCH), ppc)

185
hw/acpi.c
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@ -24,6 +24,7 @@
#define PM_FREQ 3579545
#define ACPI_DBG_IO_ADDR 0xb044
#define SMB_IO_BASE 0xb100
typedef struct PIIX4PMState {
PCIDevice dev;
@ -34,6 +35,15 @@ typedef struct PIIX4PMState {
uint8_t apms;
QEMUTimer *tmr_timer;
int64_t tmr_overflow_time;
SMBusDevice *smb_dev[128];
uint8_t smb_stat;
uint8_t smb_ctl;
uint8_t smb_cmd;
uint8_t smb_addr;
uint8_t smb_data0;
uint8_t smb_data1;
uint8_t smb_data[32];
uint8_t smb_index;
} PIIX4PMState;
#define RTC_EN (1 << 10)
@ -45,6 +55,17 @@ typedef struct PIIX4PMState {
#define SUS_EN (1 << 13)
#define SMBHSTSTS 0x00
#define SMBHSTCNT 0x02
#define SMBHSTCMD 0x03
#define SMBHSTADD 0x04
#define SMBHSTDAT0 0x05
#define SMBHSTDAT1 0x06
#define SMBBLKDAT 0x07
/* Note: only used for piix4_smbus_register_device */
static PIIX4PMState *piix4_pm_state;
static uint32_t get_pmtmr(PIIX4PMState *s)
{
uint32_t d;
@ -231,6 +252,156 @@ static void acpi_dbg_writel(void *opaque, uint32_t addr, uint32_t val)
#endif
}
static void smb_transaction(PIIX4PMState *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;
SMBusDevice *dev = s->smb_dev[addr];
#ifdef DEBUG
printf("SMBus trans addr=0x%02x prot=0x%02x\n", addr, prot);
#endif
if (!dev) goto error;
switch(prot) {
case 0x0:
if (!dev->quick_cmd) goto error;
(*dev->quick_cmd)(dev, read);
break;
case 0x1:
if (read) {
if (!dev->receive_byte) goto error;
s->smb_data0 = (*dev->receive_byte)(dev);
}
else {
if (!dev->send_byte) goto error;
(*dev->send_byte)(dev, cmd);
}
break;
case 0x2:
if (read) {
if (!dev->read_byte) goto error;
s->smb_data0 = (*dev->read_byte)(dev, cmd);
}
else {
if (!dev->write_byte) goto error;
(*dev->write_byte)(dev, cmd, s->smb_data0);
}
break;
case 0x3:
if (read) {
uint16_t val;
if (!dev->read_word) goto error;
val = (*dev->read_word)(dev, cmd);
s->smb_data0 = val;
s->smb_data1 = val >> 8;
}
else {
if (!dev->write_word) goto error;
(*dev->write_word)(dev, cmd, (s->smb_data1 << 8) | s->smb_data0);
}
break;
case 0x5:
if (read) {
if (!dev->read_block) goto error;
s->smb_data0 = (*dev->read_block)(dev, cmd, s->smb_data);
}
else {
if (!dev->write_block) goto error;
(*dev->write_block)(dev, cmd, s->smb_data0, s->smb_data);
}
break;
default:
goto error;
}
return;
error:
s->smb_stat |= 0x04;
}
static void smb_ioport_writeb(void *opaque, uint32_t addr, uint32_t val)
{
PIIX4PMState *s = opaque;
addr &= 0x3f;
#ifdef DEBUG
printf("SMB writeb port=0x%04x val=0x%02x\n", addr, val);
#endif
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;
}
}
static uint32_t smb_ioport_readb(void *opaque, uint32_t addr)
{
PIIX4PMState *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;
}
#ifdef DEBUG
printf("SMB readb port=0x%04x val=0x%02x\n", addr, val);
#endif
return val;
}
static void pm_io_space_update(PIIX4PMState *s)
{
uint32_t pm_io_base;
@ -302,6 +473,7 @@ void piix4_pm_init(PCIBus *bus, int devfn)
{
PIIX4PMState *s;
uint8_t *pci_conf;
uint32_t pm_io_base, smb_io_base;
s = (PIIX4PMState *)pci_register_device(bus,
"PM", sizeof(PIIX4PMState),
@ -332,7 +504,20 @@ void piix4_pm_init(PCIBus *bus, int devfn)
pci_conf[0x67] = (serial_hds[0] != NULL ? 0x08 : 0) |
(serial_hds[1] != NULL ? 0x90 : 0);
smb_io_base = SMB_IO_BASE;
pci_conf[0x90] = smb_io_base | 1;
pci_conf[0x91] = smb_io_base >> 8;
pci_conf[0xd2] = 0x09;
register_ioport_write(smb_io_base, 64, 1, smb_ioport_writeb, s);
register_ioport_read(smb_io_base, 64, 1, smb_ioport_readb, s);
s->tmr_timer = qemu_new_timer(vm_clock, pm_tmr_timer, s);
register_savevm("piix4_pm", 0, 1, pm_save, pm_load, s);
piix4_pm_state = s;
}
void piix4_smbus_register_device(SMBusDevice *dev, uint8_t addr)
{
piix4_pm_state->smb_dev[addr] = dev;
}

6
hw/pc.c
View File

@ -699,7 +699,13 @@ static void pc_init1(int ram_size, int vga_ram_size, int boot_device,
}
if (pci_enabled && acpi_enabled) {
uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
piix4_pm_init(pci_bus, piix3_devfn + 3);
for (i = 0; i < 8; i++) {
SMBusDevice *eeprom = smbus_eeprom_device_init(0x50 + i,
eeprom_buf + (i * 256));
piix4_smbus_register_device(eeprom, 0x50 + i);
}
}
if (i440fx_state) {

38
hw/smbus.h Normal file
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@ -0,0 +1,38 @@
/*
* QEMU SMBus API
*
* Copyright (c) 2007 Arastra, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
typedef struct SMBusDevice SMBusDevice;
struct SMBusDevice {
uint8_t addr;
void (*quick_cmd)(SMBusDevice *dev, uint8_t read);
void (*send_byte)(SMBusDevice *dev, uint8_t val);
uint8_t (*receive_byte)(SMBusDevice *dev);
void (*write_byte)(SMBusDevice *dev, uint8_t cmd, uint8_t val);
uint8_t (*read_byte)(SMBusDevice *dev, uint8_t cmd);
void (*write_word)(SMBusDevice *dev, uint8_t cmd, uint16_t val);
uint16_t (*read_word)(SMBusDevice *dev, uint8_t cmd);
void (*write_block)(SMBusDevice *dev, uint8_t cmd, uint8_t len, uint8_t *buf);
uint8_t (*read_block)(SMBusDevice *dev, uint8_t cmd, uint8_t *buf);
};

94
hw/smbus_eeprom.c Normal file
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@ -0,0 +1,94 @@
/*
* QEMU SMBus EEPROM device
*
* Copyright (c) 2007 Arastra, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "vl.h"
//#define DEBUG
typedef struct SMBusEEPROMDevice {
SMBusDevice dev;
uint8_t *data;
uint8_t offset;
} SMBusEEPROMDevice;
static void eeprom_quick_cmd(SMBusDevice *dev, uint8_t read)
{
#ifdef DEBUG
printf("eeprom_quick_cmd: addr=0x%02x read=%d\n", dev->addr, read);
#endif
}
static void eeprom_send_byte(SMBusDevice *dev, uint8_t val)
{
SMBusEEPROMDevice *eeprom = (SMBusEEPROMDevice *) dev;
#ifdef DEBUG
printf("eeprom_send_byte: addr=0x%02x val=0x%02x\n", dev->addr, val);
#endif
eeprom->offset = val;
}
static uint8_t eeprom_receive_byte(SMBusDevice *dev)
{
SMBusEEPROMDevice *eeprom = (SMBusEEPROMDevice *) dev;
uint8_t val = eeprom->data[eeprom->offset++];
#ifdef DEBUG
printf("eeprom_receive_byte: addr=0x%02x val=0x%02x\n", dev->addr, val);
#endif
return val;
}
static void eeprom_write_byte(SMBusDevice *dev, uint8_t cmd, uint8_t val)
{
SMBusEEPROMDevice *eeprom = (SMBusEEPROMDevice *) dev;
#ifdef DEBUG
printf("eeprom_write_byte: addr=0x%02x cmd=0x%02x val=0x%02x\n", dev->addr,
cmd, val);
#endif
eeprom->data[cmd] = val;
}
static uint8_t eeprom_read_byte(SMBusDevice *dev, uint8_t cmd)
{
SMBusEEPROMDevice *eeprom = (SMBusEEPROMDevice *) dev;
uint8_t val = eeprom->data[cmd];
#ifdef DEBUG
printf("eeprom_read_byte: addr=0x%02x cmd=0x%02x val=0x%02x\n", dev->addr,
cmd, val);
#endif
return val;
}
SMBusDevice *smbus_eeprom_device_init(uint8_t addr, uint8_t *buf)
{
SMBusEEPROMDevice *eeprom = qemu_mallocz(sizeof(SMBusEEPROMDevice));
eeprom->dev.addr = addr;
eeprom->dev.quick_cmd = eeprom_quick_cmd;
eeprom->dev.send_byte = eeprom_send_byte;
eeprom->dev.receive_byte = eeprom_receive_byte;
eeprom->dev.write_byte = eeprom_write_byte;
eeprom->dev.read_byte = eeprom_read_byte;
eeprom->data = buf;
eeprom->offset = 0;
return (SMBusDevice *) eeprom;
}

6
vl.h
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@ -1048,11 +1048,17 @@ int pit_get_out(PITState *pit, int channel, int64_t current_time);
void pcspk_init(PITState *);
int pcspk_audio_init(AudioState *);
#include "hw/smbus.h"
/* acpi.c */
extern int acpi_enabled;
void piix4_pm_init(PCIBus *bus, int devfn);
void piix4_smbus_register_device(SMBusDevice *dev, uint8_t addr);
void acpi_bios_init(void);
/* smbus_eeprom.c */
SMBusDevice *smbus_eeprom_device_init(uint8_t addr, uint8_t *buf);
/* pc.c */
extern QEMUMachine pc_machine;
extern QEMUMachine isapc_machine;