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authorIsaku Yamahata <yamahata@valinux.co.jp>2010-05-14 16:28:59 +0900
committerBlue Swirl <blauwirbel@gmail.com>2010-05-15 15:25:31 +0000
commitfc0bdd995ca36a34cc576ee706df239dd5ff79a9 (patch)
tree2db19babbcbe79ab61fba736c60ca0b0fb9ceeaf /hw
parentdc6839100ee42544bffec26bc6a58187c90eeb44 (diff)
acpi: split out piix4 smbus routines from acpi.c into pm_smbus.c
Split out piix4 smbus routines from acpi.c into pm_smbus.c and use it. The split out smbus emulation will be used later. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Cc: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'hw')
-rw-r--r--hw/acpi.c164
-rw-r--r--hw/pm_smbus.c178
-rw-r--r--hw/pm_smbus.h21
3 files changed, 207 insertions, 156 deletions
diff --git a/hw/acpi.c b/hw/acpi.c
index e3b63b724..ad8f4c79d 100644
--- a/hw/acpi.c
+++ b/hw/acpi.c
@@ -17,6 +17,7 @@
*/
#include "hw.h"
#include "pc.h"
+#include "pm_smbus.h"
#include "pci.h"
#include "qemu-timer.h"
#include "sysemu.h"
@@ -39,15 +40,9 @@ typedef struct PIIX4PMState {
uint8_t apms;
QEMUTimer *tmr_timer;
int64_t tmr_overflow_time;
- i2c_bus *smbus;
- 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;
+
+ PMSMBus smb;
+
qemu_irq irq;
qemu_irq cmos_s3;
qemu_irq smi_irq;
@@ -68,14 +63,6 @@ typedef struct PIIX4PMState {
#define ACPI_ENABLE 0xf1
#define ACPI_DISABLE 0xf0
-#define SMBHSTSTS 0x00
-#define SMBHSTCNT 0x02
-#define SMBHSTCMD 0x03
-#define SMBHSTADD 0x04
-#define SMBHSTDAT0 0x05
-#define SMBHSTDAT1 0x06
-#define SMBBLKDAT 0x07
-
static PIIX4PMState *pm_state;
static uint32_t get_pmtmr(PIIX4PMState *s)
@@ -282,141 +269,6 @@ 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;
- i2c_bus *bus = s->smbus;
-
-#ifdef DEBUG
- printf("SMBus trans addr=0x%02x prot=0x%02x\n", addr, prot);
-#endif
- 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;
-}
-
-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;
@@ -545,8 +397,8 @@ i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t 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);
+ register_ioport_write(smb_io_base, 64, 1, smb_ioport_writeb, &s->smb);
+ register_ioport_read(smb_io_base, 64, 1, smb_ioport_readb, &s->smb);
s->tmr_timer = qemu_new_timer(vm_clock, pm_tmr_timer, s);
@@ -554,13 +406,13 @@ i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
vmstate_register(0, &vmstate_acpi, s);
- s->smbus = i2c_init_bus(NULL, "i2c");
+ pm_smbus_init(NULL, &s->smb);
s->irq = sci_irq;
s->cmos_s3 = cmos_s3;
s->smi_irq = smi_irq;
qemu_register_reset(piix4_reset, s);
- return s->smbus;
+ return s->smb.smbus;
}
#define GPE_BASE 0xafe0
diff --git a/hw/pm_smbus.c b/hw/pm_smbus.c
new file mode 100644
index 000000000..6ef6b9ed5
--- /dev/null
+++ b/hw/pm_smbus.c
@@ -0,0 +1,178 @@
+/*
+ * 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
+
+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;
+
+#ifdef DEBUG
+ printf("SMBus trans addr=0x%02x prot=0x%02x\n", addr, prot);
+#endif
+ 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;
+#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;
+ }
+}
+
+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;
+ }
+#ifdef DEBUG
+ printf("SMB readb port=0x%04x val=0x%02x\n", addr, val);
+#endif
+ return val;
+}
+
+void pm_smbus_init(DeviceState *parent, PMSMBus *smb)
+{
+ smb->smbus = i2c_init_bus(parent, "i2c");
+}
diff --git a/hw/pm_smbus.h b/hw/pm_smbus.h
new file mode 100644
index 000000000..4750a409f
--- /dev/null
+++ b/hw/pm_smbus.h
@@ -0,0 +1,21 @@
+#ifndef PM_SMBUS_H
+#define PM_SMBUS_H
+
+typedef struct PMSMBus {
+ i2c_bus *smbus;
+
+ 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;
+} PMSMBus;
+
+void pm_smbus_init(DeviceState *parent, PMSMBus *smb);
+void smb_ioport_writeb(void *opaque, uint32_t addr, uint32_t val);
+uint32_t smb_ioport_readb(void *opaque, uint32_t addr);
+
+#endif /* !PM_SMBUS_H */