diff options
Diffstat (limited to 'hw/timer/xlnx-zynqmp-rtc.c')
| -rw-r--r-- | hw/timer/xlnx-zynqmp-rtc.c | 276 |
1 files changed, 0 insertions, 276 deletions
diff --git a/hw/timer/xlnx-zynqmp-rtc.c b/hw/timer/xlnx-zynqmp-rtc.c deleted file mode 100644 index 5692db98c2..0000000000 --- a/hw/timer/xlnx-zynqmp-rtc.c +++ /dev/null @@ -1,276 +0,0 @@ -/* - * QEMU model of the Xilinx ZynqMP Real Time Clock (RTC). - * - * Copyright (c) 2017 Xilinx Inc. - * - * Written-by: Alistair Francis <alistair.francis@xilinx.com> - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#include "qemu/osdep.h" -#include "qemu-common.h" -#include "hw/sysbus.h" -#include "hw/register.h" -#include "qemu/bitops.h" -#include "qemu/log.h" -#include "qemu/module.h" -#include "hw/irq.h" -#include "hw/ptimer.h" -#include "qemu/cutils.h" -#include "sysemu/sysemu.h" -#include "trace.h" -#include "hw/timer/xlnx-zynqmp-rtc.h" -#include "migration/vmstate.h" - -#ifndef XLNX_ZYNQMP_RTC_ERR_DEBUG -#define XLNX_ZYNQMP_RTC_ERR_DEBUG 0 -#endif - -static void rtc_int_update_irq(XlnxZynqMPRTC *s) -{ - bool pending = s->regs[R_RTC_INT_STATUS] & ~s->regs[R_RTC_INT_MASK]; - qemu_set_irq(s->irq_rtc_int, pending); -} - -static void addr_error_int_update_irq(XlnxZynqMPRTC *s) -{ - bool pending = s->regs[R_ADDR_ERROR] & ~s->regs[R_ADDR_ERROR_INT_MASK]; - qemu_set_irq(s->irq_addr_error_int, pending); -} - -static uint32_t rtc_get_count(XlnxZynqMPRTC *s) -{ - int64_t now = qemu_clock_get_ns(rtc_clock); - return s->tick_offset + now / NANOSECONDS_PER_SECOND; -} - -static uint64_t current_time_postr(RegisterInfo *reg, uint64_t val64) -{ - XlnxZynqMPRTC *s = XLNX_ZYNQMP_RTC(reg->opaque); - - return rtc_get_count(s); -} - -static void rtc_int_status_postw(RegisterInfo *reg, uint64_t val64) -{ - XlnxZynqMPRTC *s = XLNX_ZYNQMP_RTC(reg->opaque); - rtc_int_update_irq(s); -} - -static uint64_t rtc_int_en_prew(RegisterInfo *reg, uint64_t val64) -{ - XlnxZynqMPRTC *s = XLNX_ZYNQMP_RTC(reg->opaque); - - s->regs[R_RTC_INT_MASK] &= (uint32_t) ~val64; - rtc_int_update_irq(s); - return 0; -} - -static uint64_t rtc_int_dis_prew(RegisterInfo *reg, uint64_t val64) -{ - XlnxZynqMPRTC *s = XLNX_ZYNQMP_RTC(reg->opaque); - - s->regs[R_RTC_INT_MASK] |= (uint32_t) val64; - rtc_int_update_irq(s); - return 0; -} - -static void addr_error_postw(RegisterInfo *reg, uint64_t val64) -{ - XlnxZynqMPRTC *s = XLNX_ZYNQMP_RTC(reg->opaque); - addr_error_int_update_irq(s); -} - -static uint64_t addr_error_int_en_prew(RegisterInfo *reg, uint64_t val64) -{ - XlnxZynqMPRTC *s = XLNX_ZYNQMP_RTC(reg->opaque); - - s->regs[R_ADDR_ERROR_INT_MASK] &= (uint32_t) ~val64; - addr_error_int_update_irq(s); - return 0; -} - -static uint64_t addr_error_int_dis_prew(RegisterInfo *reg, uint64_t val64) -{ - XlnxZynqMPRTC *s = XLNX_ZYNQMP_RTC(reg->opaque); - - s->regs[R_ADDR_ERROR_INT_MASK] |= (uint32_t) val64; - addr_error_int_update_irq(s); - return 0; -} - -static const RegisterAccessInfo rtc_regs_info[] = { - { .name = "SET_TIME_WRITE", .addr = A_SET_TIME_WRITE, - .unimp = MAKE_64BIT_MASK(0, 32), - },{ .name = "SET_TIME_READ", .addr = A_SET_TIME_READ, - .ro = 0xffffffff, - .post_read = current_time_postr, - },{ .name = "CALIB_WRITE", .addr = A_CALIB_WRITE, - .unimp = MAKE_64BIT_MASK(0, 32), - },{ .name = "CALIB_READ", .addr = A_CALIB_READ, - .ro = 0x1fffff, - },{ .name = "CURRENT_TIME", .addr = A_CURRENT_TIME, - .ro = 0xffffffff, - .post_read = current_time_postr, - },{ .name = "CURRENT_TICK", .addr = A_CURRENT_TICK, - .ro = 0xffff, - },{ .name = "ALARM", .addr = A_ALARM, - },{ .name = "RTC_INT_STATUS", .addr = A_RTC_INT_STATUS, - .w1c = 0x3, - .post_write = rtc_int_status_postw, - },{ .name = "RTC_INT_MASK", .addr = A_RTC_INT_MASK, - .reset = 0x3, - .ro = 0x3, - },{ .name = "RTC_INT_EN", .addr = A_RTC_INT_EN, - .pre_write = rtc_int_en_prew, - },{ .name = "RTC_INT_DIS", .addr = A_RTC_INT_DIS, - .pre_write = rtc_int_dis_prew, - },{ .name = "ADDR_ERROR", .addr = A_ADDR_ERROR, - .w1c = 0x1, - .post_write = addr_error_postw, - },{ .name = "ADDR_ERROR_INT_MASK", .addr = A_ADDR_ERROR_INT_MASK, - .reset = 0x1, - .ro = 0x1, - },{ .name = "ADDR_ERROR_INT_EN", .addr = A_ADDR_ERROR_INT_EN, - .pre_write = addr_error_int_en_prew, - },{ .name = "ADDR_ERROR_INT_DIS", .addr = A_ADDR_ERROR_INT_DIS, - .pre_write = addr_error_int_dis_prew, - },{ .name = "CONTROL", .addr = A_CONTROL, - .reset = 0x1000000, - .rsvd = 0x70fffffe, - },{ .name = "SAFETY_CHK", .addr = A_SAFETY_CHK, - } -}; - -static void rtc_reset(DeviceState *dev) -{ - XlnxZynqMPRTC *s = XLNX_ZYNQMP_RTC(dev); - unsigned int i; - - for (i = 0; i < ARRAY_SIZE(s->regs_info); ++i) { - register_reset(&s->regs_info[i]); - } - - rtc_int_update_irq(s); - addr_error_int_update_irq(s); -} - -static const MemoryRegionOps rtc_ops = { - .read = register_read_memory, - .write = register_write_memory, - .endianness = DEVICE_LITTLE_ENDIAN, - .valid = { - .min_access_size = 4, - .max_access_size = 4, - }, -}; - -static void rtc_init(Object *obj) -{ - XlnxZynqMPRTC *s = XLNX_ZYNQMP_RTC(obj); - SysBusDevice *sbd = SYS_BUS_DEVICE(obj); - RegisterInfoArray *reg_array; - struct tm current_tm; - - memory_region_init(&s->iomem, obj, TYPE_XLNX_ZYNQMP_RTC, - XLNX_ZYNQMP_RTC_R_MAX * 4); - reg_array = - register_init_block32(DEVICE(obj), rtc_regs_info, - ARRAY_SIZE(rtc_regs_info), - s->regs_info, s->regs, - &rtc_ops, - XLNX_ZYNQMP_RTC_ERR_DEBUG, - XLNX_ZYNQMP_RTC_R_MAX * 4); - memory_region_add_subregion(&s->iomem, - 0x0, - ®_array->mem); - sysbus_init_mmio(sbd, &s->iomem); - sysbus_init_irq(sbd, &s->irq_rtc_int); - sysbus_init_irq(sbd, &s->irq_addr_error_int); - - qemu_get_timedate(¤t_tm, 0); - s->tick_offset = mktimegm(¤t_tm) - - qemu_clock_get_ns(rtc_clock) / NANOSECONDS_PER_SECOND; - - trace_xlnx_zynqmp_rtc_gettime(current_tm.tm_year, current_tm.tm_mon, - current_tm.tm_mday, current_tm.tm_hour, - current_tm.tm_min, current_tm.tm_sec); -} - -static int rtc_pre_save(void *opaque) -{ - XlnxZynqMPRTC *s = opaque; - int64_t now = qemu_clock_get_ns(rtc_clock) / NANOSECONDS_PER_SECOND; - - /* Add the time at migration */ - s->tick_offset = s->tick_offset + now; - - return 0; -} - -static int rtc_post_load(void *opaque, int version_id) -{ - XlnxZynqMPRTC *s = opaque; - int64_t now = qemu_clock_get_ns(rtc_clock) / NANOSECONDS_PER_SECOND; - - /* Subtract the time after migration. This combined with the pre_save - * action results in us having subtracted the time that the guest was - * stopped to the offset. - */ - s->tick_offset = s->tick_offset - now; - - return 0; -} - -static const VMStateDescription vmstate_rtc = { - .name = TYPE_XLNX_ZYNQMP_RTC, - .version_id = 1, - .minimum_version_id = 1, - .pre_save = rtc_pre_save, - .post_load = rtc_post_load, - .fields = (VMStateField[]) { - VMSTATE_UINT32_ARRAY(regs, XlnxZynqMPRTC, XLNX_ZYNQMP_RTC_R_MAX), - VMSTATE_UINT32(tick_offset, XlnxZynqMPRTC), - VMSTATE_END_OF_LIST(), - } -}; - -static void rtc_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - - dc->reset = rtc_reset; - dc->vmsd = &vmstate_rtc; -} - -static const TypeInfo rtc_info = { - .name = TYPE_XLNX_ZYNQMP_RTC, - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(XlnxZynqMPRTC), - .class_init = rtc_class_init, - .instance_init = rtc_init, -}; - -static void rtc_register_types(void) -{ - type_register_static(&rtc_info); -} - -type_init(rtc_register_types) |