diff options
Diffstat (limited to 'hw/misc/xlnx-versal-xramc.c')
| -rw-r--r-- | hw/misc/xlnx-versal-xramc.c | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/hw/misc/xlnx-versal-xramc.c b/hw/misc/xlnx-versal-xramc.c new file mode 100644 index 0000000000..e5b719a0ed --- /dev/null +++ b/hw/misc/xlnx-versal-xramc.c @@ -0,0 +1,253 @@ +/* + * QEMU model of the Xilinx XRAM Controller. + * + * Copyright (c) 2021 Xilinx Inc. + * SPDX-License-Identifier: GPL-2.0-or-later + * Written by Edgar E. Iglesias <edgar.iglesias@xilinx.com> + */ + +#include "qemu/osdep.h" +#include "qemu/units.h" +#include "qapi/error.h" +#include "migration/vmstate.h" +#include "hw/sysbus.h" +#include "hw/register.h" +#include "hw/qdev-properties.h" +#include "hw/irq.h" +#include "hw/misc/xlnx-versal-xramc.h" + +#ifndef XLNX_XRAM_CTRL_ERR_DEBUG +#define XLNX_XRAM_CTRL_ERR_DEBUG 0 +#endif + +static void xram_update_irq(XlnxXramCtrl *s) +{ + bool pending = s->regs[R_XRAM_ISR] & ~s->regs[R_XRAM_IMR]; + qemu_set_irq(s->irq, pending); +} + +static void xram_isr_postw(RegisterInfo *reg, uint64_t val64) +{ + XlnxXramCtrl *s = XLNX_XRAM_CTRL(reg->opaque); + xram_update_irq(s); +} + +static uint64_t xram_ien_prew(RegisterInfo *reg, uint64_t val64) +{ + XlnxXramCtrl *s = XLNX_XRAM_CTRL(reg->opaque); + uint32_t val = val64; + + s->regs[R_XRAM_IMR] &= ~val; + xram_update_irq(s); + return 0; +} + +static uint64_t xram_ids_prew(RegisterInfo *reg, uint64_t val64) +{ + XlnxXramCtrl *s = XLNX_XRAM_CTRL(reg->opaque); + uint32_t val = val64; + + s->regs[R_XRAM_IMR] |= val; + xram_update_irq(s); + return 0; +} + +static const RegisterAccessInfo xram_ctrl_regs_info[] = { + { .name = "XRAM_ERR_CTRL", .addr = A_XRAM_ERR_CTRL, + .reset = 0xf, + .rsvd = 0xfffffff0, + },{ .name = "XRAM_ISR", .addr = A_XRAM_ISR, + .rsvd = 0xfffff800, + .w1c = 0x7ff, + .post_write = xram_isr_postw, + },{ .name = "XRAM_IMR", .addr = A_XRAM_IMR, + .reset = 0x7ff, + .rsvd = 0xfffff800, + .ro = 0x7ff, + },{ .name = "XRAM_IEN", .addr = A_XRAM_IEN, + .rsvd = 0xfffff800, + .pre_write = xram_ien_prew, + },{ .name = "XRAM_IDS", .addr = A_XRAM_IDS, + .rsvd = 0xfffff800, + .pre_write = xram_ids_prew, + },{ .name = "XRAM_ECC_CNTL", .addr = A_XRAM_ECC_CNTL, + .rsvd = 0xfffffff8, + },{ .name = "XRAM_CLR_EXE", .addr = A_XRAM_CLR_EXE, + .rsvd = 0xffffff00, + },{ .name = "XRAM_CE_FFA", .addr = A_XRAM_CE_FFA, + .rsvd = 0xfff00000, + .ro = 0xfffff, + },{ .name = "XRAM_CE_FFD0", .addr = A_XRAM_CE_FFD0, + .ro = 0xffffffff, + },{ .name = "XRAM_CE_FFD1", .addr = A_XRAM_CE_FFD1, + .ro = 0xffffffff, + },{ .name = "XRAM_CE_FFD2", .addr = A_XRAM_CE_FFD2, + .ro = 0xffffffff, + },{ .name = "XRAM_CE_FFD3", .addr = A_XRAM_CE_FFD3, + .ro = 0xffffffff, + },{ .name = "XRAM_CE_FFE", .addr = A_XRAM_CE_FFE, + .rsvd = 0xffff0000, + .ro = 0xffff, + },{ .name = "XRAM_UE_FFA", .addr = A_XRAM_UE_FFA, + .rsvd = 0xfff00000, + .ro = 0xfffff, + },{ .name = "XRAM_UE_FFD0", .addr = A_XRAM_UE_FFD0, + .ro = 0xffffffff, + },{ .name = "XRAM_UE_FFD1", .addr = A_XRAM_UE_FFD1, + .ro = 0xffffffff, + },{ .name = "XRAM_UE_FFD2", .addr = A_XRAM_UE_FFD2, + .ro = 0xffffffff, + },{ .name = "XRAM_UE_FFD3", .addr = A_XRAM_UE_FFD3, + .ro = 0xffffffff, + },{ .name = "XRAM_UE_FFE", .addr = A_XRAM_UE_FFE, + .rsvd = 0xffff0000, + .ro = 0xffff, + },{ .name = "XRAM_FI_D0", .addr = A_XRAM_FI_D0, + },{ .name = "XRAM_FI_D1", .addr = A_XRAM_FI_D1, + },{ .name = "XRAM_FI_D2", .addr = A_XRAM_FI_D2, + },{ .name = "XRAM_FI_D3", .addr = A_XRAM_FI_D3, + },{ .name = "XRAM_FI_SY", .addr = A_XRAM_FI_SY, + .rsvd = 0xffff0000, + },{ .name = "XRAM_RMW_UE_FFA", .addr = A_XRAM_RMW_UE_FFA, + .rsvd = 0xfff00000, + .ro = 0xfffff, + },{ .name = "XRAM_FI_CNTR", .addr = A_XRAM_FI_CNTR, + .rsvd = 0xff000000, + },{ .name = "XRAM_IMP", .addr = A_XRAM_IMP, + .reset = 0x4, + .rsvd = 0xfffffff0, + .ro = 0xf, + },{ .name = "XRAM_PRDY_DBG", .addr = A_XRAM_PRDY_DBG, + .reset = 0xffff, + .rsvd = 0xffff0000, + .ro = 0xffff, + },{ .name = "XRAM_SAFETY_CHK", .addr = A_XRAM_SAFETY_CHK, + } +}; + +static void xram_ctrl_reset_enter(Object *obj, ResetType type) +{ + XlnxXramCtrl *s = XLNX_XRAM_CTRL(obj); + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(s->regs_info); ++i) { + register_reset(&s->regs_info[i]); + } + + ARRAY_FIELD_DP32(s->regs, XRAM_IMP, SIZE, s->cfg.encoded_size); +} + +static void xram_ctrl_reset_hold(Object *obj) +{ + XlnxXramCtrl *s = XLNX_XRAM_CTRL(obj); + + xram_update_irq(s); +} + +static const MemoryRegionOps xram_ctrl_ops = { + .read = register_read_memory, + .write = register_write_memory, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static void xram_ctrl_realize(DeviceState *dev, Error **errp) +{ + SysBusDevice *sbd = SYS_BUS_DEVICE(dev); + XlnxXramCtrl *s = XLNX_XRAM_CTRL(dev); + + switch (s->cfg.size) { + case 64 * KiB: + s->cfg.encoded_size = 0; + break; + case 128 * KiB: + s->cfg.encoded_size = 1; + break; + case 256 * KiB: + s->cfg.encoded_size = 2; + break; + case 512 * KiB: + s->cfg.encoded_size = 3; + break; + case 1 * MiB: + s->cfg.encoded_size = 4; + break; + default: + error_setg(errp, "Unsupported XRAM size %" PRId64, s->cfg.size); + return; + } + + memory_region_init_ram(&s->ram, OBJECT(s), + object_get_canonical_path_component(OBJECT(s)), + s->cfg.size, &error_fatal); + sysbus_init_mmio(sbd, &s->ram); +} + +static void xram_ctrl_init(Object *obj) +{ + XlnxXramCtrl *s = XLNX_XRAM_CTRL(obj); + SysBusDevice *sbd = SYS_BUS_DEVICE(obj); + + s->reg_array = + register_init_block32(DEVICE(obj), xram_ctrl_regs_info, + ARRAY_SIZE(xram_ctrl_regs_info), + s->regs_info, s->regs, + &xram_ctrl_ops, + XLNX_XRAM_CTRL_ERR_DEBUG, + XRAM_CTRL_R_MAX * 4); + sysbus_init_mmio(sbd, &s->reg_array->mem); + sysbus_init_irq(sbd, &s->irq); +} + +static void xram_ctrl_finalize(Object *obj) +{ + XlnxXramCtrl *s = XLNX_XRAM_CTRL(obj); + register_finalize_block(s->reg_array); +} + +static const VMStateDescription vmstate_xram_ctrl = { + .name = TYPE_XLNX_XRAM_CTRL, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT32_ARRAY(regs, XlnxXramCtrl, XRAM_CTRL_R_MAX), + VMSTATE_END_OF_LIST(), + } +}; + +static Property xram_ctrl_properties[] = { + DEFINE_PROP_UINT64("size", XlnxXramCtrl, cfg.size, 1 * MiB), + DEFINE_PROP_END_OF_LIST(), +}; + +static void xram_ctrl_class_init(ObjectClass *klass, void *data) +{ + ResettableClass *rc = RESETTABLE_CLASS(klass); + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = xram_ctrl_realize; + dc->vmsd = &vmstate_xram_ctrl; + device_class_set_props(dc, xram_ctrl_properties); + + rc->phases.enter = xram_ctrl_reset_enter; + rc->phases.hold = xram_ctrl_reset_hold; +} + +static const TypeInfo xram_ctrl_info = { + .name = TYPE_XLNX_XRAM_CTRL, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(XlnxXramCtrl), + .class_init = xram_ctrl_class_init, + .instance_init = xram_ctrl_init, + .instance_finalize = xram_ctrl_finalize, +}; + +static void xram_ctrl_register_types(void) +{ + type_register_static(&xram_ctrl_info); +} + +type_init(xram_ctrl_register_types) |