diff options
Diffstat (limited to 'qemu/include/hw/acpi/tco.h')
| -rw-r--r-- | qemu/include/hw/acpi/tco.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/qemu/include/hw/acpi/tco.h b/qemu/include/hw/acpi/tco.h new file mode 100644 index 000000000..c63afc8ca --- /dev/null +++ b/qemu/include/hw/acpi/tco.h @@ -0,0 +1,82 @@ +/* + * QEMU ICH9 TCO emulation + * + * Copyright (c) 2015 Paulo Alcantara <pcacjr@zytor.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#ifndef HW_ACPI_TCO_H +#define HW_ACPI_TCO_H + +#include "qemu/typedefs.h" +#include "qemu-common.h" + +/* As per ICH9 spec, the internal timer has an error of ~0.6s on every tick */ +#define TCO_TICK_NSEC 600000000LL + +/* TCO I/O register offsets */ +enum { + TCO_RLD = 0x00, + TCO_DAT_IN = 0x02, + TCO_DAT_OUT = 0x03, + TCO1_STS = 0x04, + TCO2_STS = 0x06, + TCO1_CNT = 0x08, + TCO2_CNT = 0x0a, + TCO_MESSAGE1 = 0x0c, + TCO_MESSAGE2 = 0x0d, + TCO_WDCNT = 0x0e, + SW_IRQ_GEN = 0x10, + TCO_TMR = 0x12, +}; + +/* TCO I/O register control/status bits */ +enum { + SW_TCO_SMI = 1 << 1, + TCO_INT_STS = 1 << 2, + TCO_LOCK = 1 << 12, + TCO_TMR_HLT = 1 << 11, + TCO_TIMEOUT = 1 << 3, + TCO_SECOND_TO_STS = 1 << 1, + TCO_BOOT_STS = 1 << 2, +}; + +/* TCO I/O registers mask bits */ +enum { + TCO_RLD_MASK = 0x3ff, + TCO1_STS_MASK = 0xe870, + TCO2_STS_MASK = 0xfff8, + TCO1_CNT_MASK = 0xfeff, + TCO_TMR_MASK = 0x3ff, +}; + +typedef struct TCOIORegs { + struct { + uint16_t rld; + uint8_t din; + uint8_t dout; + uint16_t sts1; + uint16_t sts2; + uint16_t cnt1; + uint16_t cnt2; + uint8_t msg1; + uint8_t msg2; + uint8_t wdcnt; + uint16_t tmr; + } tco; + uint8_t sw_irq_gen; + + QEMUTimer *tco_timer; + int64_t expire_time; + uint8_t timeouts_no; + + MemoryRegion io; +} TCOIORegs; + +/* tco.c */ +void acpi_pm_tco_init(TCOIORegs *tr, MemoryRegion *parent); + +extern const VMStateDescription vmstate_tco_io_sts; + +#endif /* HW_ACPI_TCO_H */ |