diff options
Diffstat (limited to 'qemu/hw/acpi/tco.c')
| -rw-r--r-- | qemu/hw/acpi/tco.c | 265 |
1 files changed, 0 insertions, 265 deletions
diff --git a/qemu/hw/acpi/tco.c b/qemu/hw/acpi/tco.c deleted file mode 100644 index 8ce7daf23..000000000 --- a/qemu/hw/acpi/tco.c +++ /dev/null @@ -1,265 +0,0 @@ -/* - * 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. - */ -#include "qemu/osdep.h" -#include "qemu-common.h" -#include "sysemu/watchdog.h" -#include "hw/i386/ich9.h" - -#include "hw/acpi/tco.h" - -//#define DEBUG - -#ifdef DEBUG -#define TCO_DEBUG(fmt, ...) \ - do { \ - fprintf(stderr, "%s "fmt, __func__, ## __VA_ARGS__); \ - } while (0) -#else -#define TCO_DEBUG(fmt, ...) do { } while (0) -#endif - -enum { - TCO_RLD_DEFAULT = 0x0000, - TCO_DAT_IN_DEFAULT = 0x00, - TCO_DAT_OUT_DEFAULT = 0x00, - TCO1_STS_DEFAULT = 0x0000, - TCO2_STS_DEFAULT = 0x0000, - TCO1_CNT_DEFAULT = 0x0000, - TCO2_CNT_DEFAULT = 0x0008, - TCO_MESSAGE1_DEFAULT = 0x00, - TCO_MESSAGE2_DEFAULT = 0x00, - TCO_WDCNT_DEFAULT = 0x00, - TCO_TMR_DEFAULT = 0x0004, - SW_IRQ_GEN_DEFAULT = 0x03, -}; - -static inline void tco_timer_reload(TCOIORegs *tr) -{ - tr->expire_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + - ((int64_t)(tr->tco.tmr & TCO_TMR_MASK) * TCO_TICK_NSEC); - timer_mod(tr->tco_timer, tr->expire_time); -} - -static inline void tco_timer_stop(TCOIORegs *tr) -{ - tr->expire_time = -1; -} - -static void tco_timer_expired(void *opaque) -{ - TCOIORegs *tr = opaque; - ICH9LPCPMRegs *pm = container_of(tr, ICH9LPCPMRegs, tco_regs); - ICH9LPCState *lpc = container_of(pm, ICH9LPCState, pm); - uint32_t gcs = pci_get_long(lpc->chip_config + ICH9_CC_GCS); - - tr->tco.rld = 0; - tr->tco.sts1 |= TCO_TIMEOUT; - if (++tr->timeouts_no == 2) { - tr->tco.sts2 |= TCO_SECOND_TO_STS; - tr->tco.sts2 |= TCO_BOOT_STS; - tr->timeouts_no = 0; - - if (!lpc->pin_strap.spkr_hi && !(gcs & ICH9_CC_GCS_NO_REBOOT)) { - watchdog_perform_action(); - tco_timer_stop(tr); - return; - } - } - - if (pm->smi_en & ICH9_PMIO_SMI_EN_TCO_EN) { - ich9_generate_smi(); - } else { - ich9_generate_nmi(); - } - tr->tco.rld = tr->tco.tmr; - tco_timer_reload(tr); -} - -/* NOTE: values of 0 or 1 will be ignored by ICH */ -static inline int can_start_tco_timer(TCOIORegs *tr) -{ - return !(tr->tco.cnt1 & TCO_TMR_HLT) && tr->tco.tmr > 1; -} - -static uint32_t tco_ioport_readw(TCOIORegs *tr, uint32_t addr) -{ - uint16_t rld; - - switch (addr) { - case TCO_RLD: - if (tr->expire_time != -1) { - int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); - int64_t elapsed = (tr->expire_time - now) / TCO_TICK_NSEC; - rld = (uint16_t)elapsed | (tr->tco.rld & ~TCO_RLD_MASK); - } else { - rld = tr->tco.rld; - } - return rld; - case TCO_DAT_IN: - return tr->tco.din; - case TCO_DAT_OUT: - return tr->tco.dout; - case TCO1_STS: - return tr->tco.sts1; - case TCO2_STS: - return tr->tco.sts2; - case TCO1_CNT: - return tr->tco.cnt1; - case TCO2_CNT: - return tr->tco.cnt2; - case TCO_MESSAGE1: - return tr->tco.msg1; - case TCO_MESSAGE2: - return tr->tco.msg2; - case TCO_WDCNT: - return tr->tco.wdcnt; - case TCO_TMR: - return tr->tco.tmr; - case SW_IRQ_GEN: - return tr->sw_irq_gen; - } - return 0; -} - -static void tco_ioport_writew(TCOIORegs *tr, uint32_t addr, uint32_t val) -{ - switch (addr) { - case TCO_RLD: - tr->timeouts_no = 0; - if (can_start_tco_timer(tr)) { - tr->tco.rld = tr->tco.tmr; - tco_timer_reload(tr); - } else { - tr->tco.rld = val; - } - break; - case TCO_DAT_IN: - tr->tco.din = val; - tr->tco.sts1 |= SW_TCO_SMI; - ich9_generate_smi(); - break; - case TCO_DAT_OUT: - tr->tco.dout = val; - tr->tco.sts1 |= TCO_INT_STS; - /* TODO: cause an interrupt, as selected by the TCO_INT_SEL bits */ - break; - case TCO1_STS: - tr->tco.sts1 = val & TCO1_STS_MASK; - break; - case TCO2_STS: - tr->tco.sts2 = val & TCO2_STS_MASK; - break; - case TCO1_CNT: - val &= TCO1_CNT_MASK; - /* - * once TCO_LOCK bit is set, it can not be cleared by software. a reset - * is required to change this bit from 1 to 0 -- it defaults to 0. - */ - tr->tco.cnt1 = val | (tr->tco.cnt1 & TCO_LOCK); - if (can_start_tco_timer(tr)) { - tr->tco.rld = tr->tco.tmr; - tco_timer_reload(tr); - } else { - tco_timer_stop(tr); - } - break; - case TCO2_CNT: - tr->tco.cnt2 = val; - break; - case TCO_MESSAGE1: - tr->tco.msg1 = val; - break; - case TCO_MESSAGE2: - tr->tco.msg2 = val; - break; - case TCO_WDCNT: - tr->tco.wdcnt = val; - break; - case TCO_TMR: - tr->tco.tmr = val; - break; - case SW_IRQ_GEN: - tr->sw_irq_gen = val; - break; - } -} - -static uint64_t tco_io_readw(void *opaque, hwaddr addr, unsigned width) -{ - TCOIORegs *tr = opaque; - return tco_ioport_readw(tr, addr); -} - -static void tco_io_writew(void *opaque, hwaddr addr, uint64_t val, - unsigned width) -{ - TCOIORegs *tr = opaque; - tco_ioport_writew(tr, addr, val); -} - -static const MemoryRegionOps tco_io_ops = { - .read = tco_io_readw, - .write = tco_io_writew, - .valid.min_access_size = 1, - .valid.max_access_size = 4, - .impl.min_access_size = 1, - .impl.max_access_size = 2, - .endianness = DEVICE_LITTLE_ENDIAN, -}; - -void acpi_pm_tco_init(TCOIORegs *tr, MemoryRegion *parent) -{ - *tr = (TCOIORegs) { - .tco = { - .rld = TCO_RLD_DEFAULT, - .din = TCO_DAT_IN_DEFAULT, - .dout = TCO_DAT_OUT_DEFAULT, - .sts1 = TCO1_STS_DEFAULT, - .sts2 = TCO2_STS_DEFAULT, - .cnt1 = TCO1_CNT_DEFAULT, - .cnt2 = TCO2_CNT_DEFAULT, - .msg1 = TCO_MESSAGE1_DEFAULT, - .msg2 = TCO_MESSAGE2_DEFAULT, - .wdcnt = TCO_WDCNT_DEFAULT, - .tmr = TCO_TMR_DEFAULT, - }, - .sw_irq_gen = SW_IRQ_GEN_DEFAULT, - .tco_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, tco_timer_expired, tr), - .expire_time = -1, - .timeouts_no = 0, - }; - memory_region_init_io(&tr->io, memory_region_owner(parent), - &tco_io_ops, tr, "sm-tco", ICH9_PMIO_TCO_LEN); - memory_region_add_subregion(parent, ICH9_PMIO_TCO_RLD, &tr->io); -} - -const VMStateDescription vmstate_tco_io_sts = { - .name = "tco io device status", - .version_id = 1, - .minimum_version_id = 1, - .minimum_version_id_old = 1, - .fields = (VMStateField[]) { - VMSTATE_UINT16(tco.rld, TCOIORegs), - VMSTATE_UINT8(tco.din, TCOIORegs), - VMSTATE_UINT8(tco.dout, TCOIORegs), - VMSTATE_UINT16(tco.sts1, TCOIORegs), - VMSTATE_UINT16(tco.sts2, TCOIORegs), - VMSTATE_UINT16(tco.cnt1, TCOIORegs), - VMSTATE_UINT16(tco.cnt2, TCOIORegs), - VMSTATE_UINT8(tco.msg1, TCOIORegs), - VMSTATE_UINT8(tco.msg2, TCOIORegs), - VMSTATE_UINT8(tco.wdcnt, TCOIORegs), - VMSTATE_UINT16(tco.tmr, TCOIORegs), - VMSTATE_UINT8(sw_irq_gen, TCOIORegs), - VMSTATE_TIMER_PTR(tco_timer, TCOIORegs), - VMSTATE_INT64(expire_time, TCOIORegs), - VMSTATE_UINT8(timeouts_no, TCOIORegs), - VMSTATE_END_OF_LIST() - } -}; |