diff options
Diffstat (limited to 'hw/acpi_ich9.c')
-rw-r--r-- | hw/acpi_ich9.c | 315 |
1 files changed, 315 insertions, 0 deletions
diff --git a/hw/acpi_ich9.c b/hw/acpi_ich9.c new file mode 100644 index 0000000..c45921c --- /dev/null +++ b/hw/acpi_ich9.c @@ -0,0 +1,315 @@ +/* + * ACPI implementation + * + * 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, see <http://www.gnu.org/licenses/> + */ +/* + * Copyright (c) 2009 Isaku Yamahata <yamahata at valinux co jp> + * VA Linux Systems Japan K.K. + * Copyright (C) 2012 Jason Baron <jbaron@redhat.com> + * + * This is based on acpi.c. + */ +#include "hw.h" +#include "pc.h" +#include "pci.h" +#include "qemu-timer.h" +#include "sysemu.h" +#include "acpi.h" + +#include "ich9.h" + +//#define DEBUG + +#ifdef DEBUG +#define ICH9_DEBUG(fmt, ...) \ +do { printf("%s "fmt, __func__, ## __VA_ARGS__); } while (0) +#else +#define ICH9_DEBUG(fmt, ...) do { } while (0) +#endif + +static void pm_ioport_write_fallback(void *opaque, uint32_t addr, int len, + uint32_t val); +static uint32_t pm_ioport_read_fallback(void *opaque, uint32_t addr, int len); + +static void pm_update_sci(ICH9LPCPMRegs *pm) +{ + int sci_level, pm1a_sts; + + pm1a_sts = acpi_pm1_evt_get_sts(&pm->acpi_regs); + + sci_level = (((pm1a_sts & pm->acpi_regs.pm1.evt.en) & + (ACPI_BITMASK_RT_CLOCK_ENABLE | + ACPI_BITMASK_POWER_BUTTON_ENABLE | + ACPI_BITMASK_GLOBAL_LOCK_ENABLE | + ACPI_BITMASK_TIMER_ENABLE)) != 0); + qemu_set_irq(pm->irq, sci_level); + + /* schedule a timer interruption if needed */ + acpi_pm_tmr_update(&pm->acpi_regs, + (pm->acpi_regs.pm1.evt.en & ACPI_BITMASK_TIMER_ENABLE) && + !(pm1a_sts & ACPI_BITMASK_TIMER_STATUS)); +} + +static void ich9_pm_update_sci_fn(ACPIREGS *regs) +{ + ICH9LPCPMRegs *pm = container_of(regs, ICH9LPCPMRegs, acpi_regs); + pm_update_sci(pm); +} + +static void pm_ioport_writeb(void *opaque, uint32_t addr, uint32_t val) +{ + ICH9LPCPMRegs *pm = opaque; + + switch (addr & ICH9_PMIO_MASK) { + case ICH9_PMIO_GPE0_STS ... (ICH9_PMIO_GPE0_STS + ICH9_PMIO_GPE0_LEN - 1): + acpi_gpe_ioport_writeb(&pm->acpi_regs, addr, val); + break; + default: + break; + } + + ICH9_DEBUG("port=0x%04x val=0x%04x\n", addr, val); +} + +static uint32_t pm_ioport_readb(void *opaque, uint32_t addr) +{ + ICH9LPCPMRegs *pm = opaque; + uint32_t val = 0; + + switch (addr & ICH9_PMIO_MASK) { + case ICH9_PMIO_GPE0_STS ... (ICH9_PMIO_GPE0_STS + ICH9_PMIO_GPE0_LEN - 1): + val = acpi_gpe_ioport_readb(&pm->acpi_regs, addr); + break; + default: + val = 0; + break; + } + ICH9_DEBUG("port=0x%04x val=0x%04x\n", addr, val); + return val; +} + +static void pm_ioport_writew(void *opaque, uint32_t addr, uint32_t val) +{ + ICH9LPCPMRegs *pm = opaque; + + switch (addr & ICH9_PMIO_MASK) { + case ICH9_PMIO_PM1_STS: + acpi_pm1_evt_write_sts(&pm->acpi_regs, val); + pm_update_sci(pm); + break; + case ICH9_PMIO_PM1_EN: + pm->acpi_regs.pm1.evt.en = val; + pm_update_sci(pm); + break; + case ICH9_PMIO_PM1_CNT: + acpi_pm1_cnt_write(&pm->acpi_regs, val, 0); + break; + default: + pm_ioport_write_fallback(opaque, addr, 2, val); + break; + } + ICH9_DEBUG("port=0x%04x val=0x%04x\n", addr, val); +} + +static uint32_t pm_ioport_readw(void *opaque, uint32_t addr) +{ + ICH9LPCPMRegs *pm = opaque; + uint32_t val; + + switch (addr & ICH9_PMIO_MASK) { + case ICH9_PMIO_PM1_STS: + val = acpi_pm1_evt_get_sts(&pm->acpi_regs); + break; + case ICH9_PMIO_PM1_EN: + val = pm->acpi_regs.pm1.evt.en; + break; + case ICH9_PMIO_PM1_CNT: + val = pm->acpi_regs.pm1.cnt.cnt; + break; + default: + val = pm_ioport_read_fallback(opaque, addr, 2); + break; + } + ICH9_DEBUG("port=0x%04x val=0x%04x\n", addr, val); + return val; +} + +static void pm_ioport_writel(void *opaque, uint32_t addr, uint32_t val) +{ + ICH9LPCPMRegs *pm = opaque; + + switch (addr & ICH9_PMIO_MASK) { + case ICH9_PMIO_SMI_EN: + pm->smi_en = val; + break; + default: + pm_ioport_write_fallback(opaque, addr, 4, val); + break; + } + ICH9_DEBUG("port=0x%04x val=0x%08x\n", addr, val); +} + +static uint32_t pm_ioport_readl(void *opaque, uint32_t addr) +{ + ICH9LPCPMRegs *pm = opaque; + uint32_t val; + + switch (addr & ICH9_PMIO_MASK) { + case ICH9_PMIO_PM1_TMR: + val = acpi_pm_tmr_get(&pm->acpi_regs); + break; + case ICH9_PMIO_SMI_EN: + val = pm->smi_en; + break; + + default: + val = pm_ioport_read_fallback(opaque, addr, 4); + break; + } + ICH9_DEBUG("port=0x%04x val=0x%08x\n", addr, val); + return val; +} + +static void pm_ioport_write_fallback(void *opaque, uint32_t addr, int len, + uint32_t val) + { + int subsize = (len == 4) ? 2 : 1; + IOPortWriteFunc *ioport_write = + (subsize == 2) ? pm_ioport_writew : pm_ioport_writeb; + + int i; + + for (i = 0; i < len; i += subsize) { + ioport_write(opaque, addr, val); + val >>= 8 * subsize; + } +} + +static uint32_t pm_ioport_read_fallback(void *opaque, uint32_t addr, int len) +{ + int subsize = (len == 4) ? 2 : 1; + IOPortReadFunc *ioport_read = + (subsize == 2) ? pm_ioport_readw : pm_ioport_readb; + + uint32_t val; + int i; + + val = 0; + for (i = 0; i < len; i += subsize) { + val <<= 8 * subsize; + val |= ioport_read(opaque, addr); + } + + return val; +} + +void ich9_pm_iospace_update(ICH9LPCPMRegs *pm, uint32_t pm_io_base) +{ + ICH9_DEBUG("to 0x%x\n", pm_io_base); + + assert((pm_io_base & ICH9_PMIO_MASK) == 0); + + if (pm->pm_io_base != 0) { + isa_unassign_ioport(pm->pm_io_base, ICH9_PMIO_SIZE); + } + + /* don't map at 0 */ + if (pm_io_base == 0) { + return; + } + + register_ioport_write(pm_io_base, ICH9_PMIO_SIZE, 1, pm_ioport_writeb, pm); + register_ioport_read(pm_io_base, ICH9_PMIO_SIZE, 1, pm_ioport_readb, pm); + register_ioport_write(pm_io_base, ICH9_PMIO_SIZE, 2, pm_ioport_writew, pm); + register_ioport_read(pm_io_base, ICH9_PMIO_SIZE, 2, pm_ioport_readw, pm); + register_ioport_write(pm_io_base, ICH9_PMIO_SIZE, 4, pm_ioport_writel, pm); + register_ioport_read(pm_io_base, ICH9_PMIO_SIZE, 4, pm_ioport_readl, pm); + + pm->pm_io_base = pm_io_base; + acpi_gpe_blk(&pm->acpi_regs, pm_io_base + ICH9_PMIO_GPE0_STS); +} + +static int ich9_pm_post_load(void *opaque, int version_id) +{ + ICH9LPCPMRegs *pm = opaque; + uint32_t pm_io_base = pm->pm_io_base; + pm->pm_io_base = 0; + ich9_pm_iospace_update(pm, pm_io_base); + return 0; +} + +#define VMSTATE_GPE_ARRAY(_field, _state) \ + { \ + .name = (stringify(_field)), \ + .version_id = 0, \ + .num = ICH9_PMIO_GPE0_LEN, \ + .info = &vmstate_info_uint8, \ + .size = sizeof(uint8_t), \ + .flags = VMS_ARRAY | VMS_POINTER, \ + .offset = vmstate_offset_pointer(_state, _field, uint8_t), \ + } + +const VMStateDescription vmstate_ich9_pm = { + .name = "ich9_pm", + .version_id = 1, + .minimum_version_id = 1, + .minimum_version_id_old = 1, + .post_load = ich9_pm_post_load, + .fields = (VMStateField[]) { + VMSTATE_UINT16(acpi_regs.pm1.evt.sts, ICH9LPCPMRegs), + VMSTATE_UINT16(acpi_regs.pm1.evt.en, ICH9LPCPMRegs), + VMSTATE_UINT16(acpi_regs.pm1.cnt.cnt, ICH9LPCPMRegs), + VMSTATE_TIMER(acpi_regs.tmr.timer, ICH9LPCPMRegs), + VMSTATE_INT64(acpi_regs.tmr.overflow_time, ICH9LPCPMRegs), + VMSTATE_GPE_ARRAY(acpi_regs.gpe.sts, ICH9LPCPMRegs), + VMSTATE_GPE_ARRAY(acpi_regs.gpe.en, ICH9LPCPMRegs), + VMSTATE_UINT32(smi_en, ICH9LPCPMRegs), + VMSTATE_UINT32(smi_sts, ICH9LPCPMRegs), + VMSTATE_END_OF_LIST() + } +}; + +static void pm_reset(void *opaque) +{ + ICH9LPCPMRegs *pm = opaque; + ich9_pm_iospace_update(pm, 0); + + acpi_pm1_evt_reset(&pm->acpi_regs); + acpi_pm1_cnt_reset(&pm->acpi_regs); + acpi_pm_tmr_reset(&pm->acpi_regs); + acpi_gpe_reset(&pm->acpi_regs); + + pm_update_sci(pm); +} + +static void pm_powerdown_req(Notifier *n, void *opaque) +{ + ICH9LPCPMRegs *pm = container_of(n, ICH9LPCPMRegs, powerdown_notifier); + + acpi_pm1_evt_power_down(&pm->acpi_regs); +} + +void ich9_pm_init(ICH9LPCPMRegs *pm, qemu_irq sci_irq, qemu_irq cmos_s3) +{ + acpi_pm_tmr_init(&pm->acpi_regs, ich9_pm_update_sci_fn); + acpi_pm1_cnt_init(&pm->acpi_regs); + acpi_gpe_init(&pm->acpi_regs, ICH9_PMIO_GPE0_LEN); + + pm->irq = sci_irq; + qemu_register_reset(pm_reset, pm); + pm->powerdown_notifier.notify = pm_powerdown_req; + qemu_register_powerdown_notifier(&pm->powerdown_notifier); +} |