From fc0bdd995ca36a34cc576ee706df239dd5ff79a9 Mon Sep 17 00:00:00 2001 From: Isaku Yamahata Date: Fri, 14 May 2010 16:28:59 +0900 Subject: 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 Acked-by: Gerd Hoffmann Cc: Aurelien Jarno Signed-off-by: Blue Swirl --- hw/acpi.c | 164 +++-------------------------------------------------- hw/pm_smbus.c | 178 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ hw/pm_smbus.h | 21 +++++++ 3 files changed, 207 insertions(+), 156 deletions(-) create mode 100644 hw/pm_smbus.c create mode 100644 hw/pm_smbus.h (limited to 'hw') 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 */ -- cgit v1.2.3