diff options
Diffstat (limited to 'hw/misc/milkymist-hpdmc.c')
| -rw-r--r-- | hw/misc/milkymist-hpdmc.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/hw/misc/milkymist-hpdmc.c b/hw/misc/milkymist-hpdmc.c deleted file mode 100644 index 09a3875f02..0000000000 --- a/hw/misc/milkymist-hpdmc.c +++ /dev/null @@ -1,172 +0,0 @@ -/* - * QEMU model of the Milkymist High Performance Dynamic Memory Controller. - * - * Copyright (c) 2010 Michael Walle <michael@walle.cc> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * 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/>. - * - * - * Specification available at: - * http://milkymist.walle.cc/socdoc/hpdmc.pdf - */ - -#include "qemu/osdep.h" -#include "hw/sysbus.h" -#include "migration/vmstate.h" -#include "trace.h" -#include "qemu/error-report.h" -#include "qemu/module.h" -#include "qom/object.h" - -enum { - R_SYSTEM = 0, - R_BYPASS, - R_TIMING, - R_IODELAY, - R_MAX -}; - -enum { - IODELAY_DQSDELAY_RDY = (1<<5), - IODELAY_PLL1_LOCKED = (1<<6), - IODELAY_PLL2_LOCKED = (1<<7), -}; - -#define TYPE_MILKYMIST_HPDMC "milkymist-hpdmc" -OBJECT_DECLARE_SIMPLE_TYPE(MilkymistHpdmcState, MILKYMIST_HPDMC) - -struct MilkymistHpdmcState { - SysBusDevice parent_obj; - - MemoryRegion regs_region; - - uint32_t regs[R_MAX]; -}; - -static uint64_t hpdmc_read(void *opaque, hwaddr addr, - unsigned size) -{ - MilkymistHpdmcState *s = opaque; - uint32_t r = 0; - - addr >>= 2; - switch (addr) { - case R_SYSTEM: - case R_BYPASS: - case R_TIMING: - case R_IODELAY: - r = s->regs[addr]; - break; - - default: - error_report("milkymist_hpdmc: read access to unknown register 0x" - TARGET_FMT_plx, addr << 2); - break; - } - - trace_milkymist_hpdmc_memory_read(addr << 2, r); - - return r; -} - -static void hpdmc_write(void *opaque, hwaddr addr, uint64_t value, - unsigned size) -{ - MilkymistHpdmcState *s = opaque; - - trace_milkymist_hpdmc_memory_write(addr, value); - - addr >>= 2; - switch (addr) { - case R_SYSTEM: - case R_BYPASS: - case R_TIMING: - s->regs[addr] = value; - break; - case R_IODELAY: - /* ignore writes */ - break; - - default: - error_report("milkymist_hpdmc: write access to unknown register 0x" - TARGET_FMT_plx, addr << 2); - break; - } -} - -static const MemoryRegionOps hpdmc_mmio_ops = { - .read = hpdmc_read, - .write = hpdmc_write, - .valid = { - .min_access_size = 4, - .max_access_size = 4, - }, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -static void milkymist_hpdmc_reset(DeviceState *d) -{ - MilkymistHpdmcState *s = MILKYMIST_HPDMC(d); - int i; - - for (i = 0; i < R_MAX; i++) { - s->regs[i] = 0; - } - - /* defaults */ - s->regs[R_IODELAY] = IODELAY_DQSDELAY_RDY | IODELAY_PLL1_LOCKED - | IODELAY_PLL2_LOCKED; -} - -static void milkymist_hpdmc_realize(DeviceState *dev, Error **errp) -{ - MilkymistHpdmcState *s = MILKYMIST_HPDMC(dev); - - memory_region_init_io(&s->regs_region, OBJECT(dev), &hpdmc_mmio_ops, s, - "milkymist-hpdmc", R_MAX * 4); - sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->regs_region); -} - -static const VMStateDescription vmstate_milkymist_hpdmc = { - .name = "milkymist-hpdmc", - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_UINT32_ARRAY(regs, MilkymistHpdmcState, R_MAX), - VMSTATE_END_OF_LIST() - } -}; - -static void milkymist_hpdmc_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - - dc->realize = milkymist_hpdmc_realize; - dc->reset = milkymist_hpdmc_reset; - dc->vmsd = &vmstate_milkymist_hpdmc; -} - -static const TypeInfo milkymist_hpdmc_info = { - .name = TYPE_MILKYMIST_HPDMC, - .parent = TYPE_SYS_BUS_DEVICE, - .instance_size = sizeof(MilkymistHpdmcState), - .class_init = milkymist_hpdmc_class_init, -}; - -static void milkymist_hpdmc_register_types(void) -{ - type_register_static(&milkymist_hpdmc_info); -} - -type_init(milkymist_hpdmc_register_types) |