| /* |
| * QEMU Sparc Sun4m ECC memory controller emulation |
| * |
| * Copyright (c) 2007 Robert Reif |
| * |
| * 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 "hw/irq.h" |
| #include "hw/qdev-properties.h" |
| #include "hw/sysbus.h" |
| #include "migration/vmstate.h" |
| #include "qemu/module.h" |
| #include "trace.h" |
| #include "qom/object.h" |
| |
| /* There are 3 versions of this chip used in SMP sun4m systems: |
| * MCC (version 0, implementation 0) SS-600MP |
| * EMC (version 0, implementation 1) SS-10 |
| * SMC (version 0, implementation 2) SS-10SX and SS-20 |
| * |
| * Chipset docs: |
| * "Sun-4M System Architecture (revision 2.0) by Chuck Narad", 950-1373-01, |
| * http://mediacast.sun.com/users/Barton808/media/Sun4M_SystemArchitecture_edited2.pdf |
| */ |
| |
| #define ECC_MCC 0x00000000 |
| #define ECC_EMC 0x10000000 |
| #define ECC_SMC 0x20000000 |
| |
| /* Register indexes */ |
| #define ECC_MER 0 /* Memory Enable Register */ |
| #define ECC_MDR 1 /* Memory Delay Register */ |
| #define ECC_MFSR 2 /* Memory Fault Status Register */ |
| #define ECC_VCR 3 /* Video Configuration Register */ |
| #define ECC_MFAR0 4 /* Memory Fault Address Register 0 */ |
| #define ECC_MFAR1 5 /* Memory Fault Address Register 1 */ |
| #define ECC_DR 6 /* Diagnostic Register */ |
| #define ECC_ECR0 7 /* Event Count Register 0 */ |
| #define ECC_ECR1 8 /* Event Count Register 1 */ |
| |
| /* ECC fault control register */ |
| #define ECC_MER_EE 0x00000001 /* Enable ECC checking */ |
| #define ECC_MER_EI 0x00000002 /* Enable Interrupts on |
| correctable errors */ |
| #define ECC_MER_MRR0 0x00000004 /* SIMM 0 */ |
| #define ECC_MER_MRR1 0x00000008 /* SIMM 1 */ |
| #define ECC_MER_MRR2 0x00000010 /* SIMM 2 */ |
| #define ECC_MER_MRR3 0x00000020 /* SIMM 3 */ |
| #define ECC_MER_MRR4 0x00000040 /* SIMM 4 */ |
| #define ECC_MER_MRR5 0x00000080 /* SIMM 5 */ |
| #define ECC_MER_MRR6 0x00000100 /* SIMM 6 */ |
| #define ECC_MER_MRR7 0x00000200 /* SIMM 7 */ |
| #define ECC_MER_REU 0x00000100 /* Memory Refresh Enable (600MP) */ |
| #define ECC_MER_MRR 0x000003fc /* MRR mask */ |
| #define ECC_MER_A 0x00000400 /* Memory controller addr map select */ |
| #define ECC_MER_DCI 0x00000800 /* Disables Coherent Invalidate ACK */ |
| #define ECC_MER_VER 0x0f000000 /* Version */ |
| #define ECC_MER_IMPL 0xf0000000 /* Implementation */ |
| #define ECC_MER_MASK_0 0x00000103 /* Version 0 (MCC) mask */ |
| #define ECC_MER_MASK_1 0x00000bff /* Version 1 (EMC) mask */ |
| #define ECC_MER_MASK_2 0x00000bff /* Version 2 (SMC) mask */ |
| |
| /* ECC memory delay register */ |
| #define ECC_MDR_RRI 0x000003ff /* Refresh Request Interval */ |
| #define ECC_MDR_MI 0x00001c00 /* MIH Delay */ |
| #define ECC_MDR_CI 0x0000e000 /* Coherent Invalidate Delay */ |
| #define ECC_MDR_MDL 0x001f0000 /* MBus Master arbitration delay */ |
| #define ECC_MDR_MDH 0x03e00000 /* MBus Master arbitration delay */ |
| #define ECC_MDR_GAD 0x7c000000 /* Graphics Arbitration Delay */ |
| #define ECC_MDR_RSC 0x80000000 /* Refresh load control */ |
| #define ECC_MDR_MASK 0x7fffffff |
| |
| /* ECC fault status register */ |
| #define ECC_MFSR_CE 0x00000001 /* Correctable error */ |
| #define ECC_MFSR_BS 0x00000002 /* C2 graphics bad slot access */ |
| #define ECC_MFSR_TO 0x00000004 /* Timeout on write */ |
| #define ECC_MFSR_UE 0x00000008 /* Uncorrectable error */ |
| #define ECC_MFSR_DW 0x000000f0 /* Index of double word in block */ |
| #define ECC_MFSR_SYND 0x0000ff00 /* Syndrome for correctable error */ |
| #define ECC_MFSR_ME 0x00010000 /* Multiple errors */ |
| #define ECC_MFSR_C2ERR 0x00020000 /* C2 graphics error */ |
| |
| /* ECC fault address register 0 */ |
| #define ECC_MFAR0_PADDR 0x0000000f /* PA[32-35] */ |
| #define ECC_MFAR0_TYPE 0x000000f0 /* Transaction type */ |
| #define ECC_MFAR0_SIZE 0x00000700 /* Transaction size */ |
| #define ECC_MFAR0_CACHE 0x00000800 /* Mapped cacheable */ |
| #define ECC_MFAR0_LOCK 0x00001000 /* Error occurred in atomic cycle */ |
| #define ECC_MFAR0_BMODE 0x00002000 /* Boot mode */ |
| #define ECC_MFAR0_VADDR 0x003fc000 /* VA[12-19] (superset bits) */ |
| #define ECC_MFAR0_S 0x08000000 /* Supervisor mode */ |
| #define ECC_MFARO_MID 0xf0000000 /* Module ID */ |
| |
| /* ECC diagnostic register */ |
| #define ECC_DR_CBX 0x00000001 |
| #define ECC_DR_CB0 0x00000002 |
| #define ECC_DR_CB1 0x00000004 |
| #define ECC_DR_CB2 0x00000008 |
| #define ECC_DR_CB4 0x00000010 |
| #define ECC_DR_CB8 0x00000020 |
| #define ECC_DR_CB16 0x00000040 |
| #define ECC_DR_CB32 0x00000080 |
| #define ECC_DR_DMODE 0x00000c00 |
| |
| #define ECC_NREGS 9 |
| #define ECC_SIZE (ECC_NREGS * sizeof(uint32_t)) |
| |
| #define ECC_DIAG_SIZE 4 |
| #define ECC_DIAG_MASK (ECC_DIAG_SIZE - 1) |
| |
| #define TYPE_ECC_MEMCTL "eccmemctl" |
| OBJECT_DECLARE_SIMPLE_TYPE(ECCState, ECC_MEMCTL) |
| |
| struct ECCState { |
| SysBusDevice parent_obj; |
| |
| MemoryRegion iomem, iomem_diag; |
| qemu_irq irq; |
| uint32_t regs[ECC_NREGS]; |
| uint8_t diag[ECC_DIAG_SIZE]; |
| uint32_t version; |
| }; |
| |
| static void ecc_mem_write(void *opaque, hwaddr addr, uint64_t val, |
| unsigned size) |
| { |
| ECCState *s = opaque; |
| |
| switch (addr >> 2) { |
| case ECC_MER: |
| if (s->version == ECC_MCC) |
| s->regs[ECC_MER] = (val & ECC_MER_MASK_0); |
| else if (s->version == ECC_EMC) |
| s->regs[ECC_MER] = s->version | (val & ECC_MER_MASK_1); |
| else if (s->version == ECC_SMC) |
| s->regs[ECC_MER] = s->version | (val & ECC_MER_MASK_2); |
| trace_ecc_mem_writel_mer(val); |
| break; |
| case ECC_MDR: |
| s->regs[ECC_MDR] = val & ECC_MDR_MASK; |
| trace_ecc_mem_writel_mdr(val); |
| break; |
| case ECC_MFSR: |
| s->regs[ECC_MFSR] = val; |
| qemu_irq_lower(s->irq); |
| trace_ecc_mem_writel_mfsr(val); |
| break; |
| case ECC_VCR: |
| s->regs[ECC_VCR] = val; |
| trace_ecc_mem_writel_vcr(val); |
| break; |
| case ECC_DR: |
| s->regs[ECC_DR] = val; |
| trace_ecc_mem_writel_dr(val); |
| break; |
| case ECC_ECR0: |
| s->regs[ECC_ECR0] = val; |
| trace_ecc_mem_writel_ecr0(val); |
| break; |
| case ECC_ECR1: |
| s->regs[ECC_ECR0] = val; |
| trace_ecc_mem_writel_ecr1(val); |
| break; |
| } |
| } |
| |
| static uint64_t ecc_mem_read(void *opaque, hwaddr addr, |
| unsigned size) |
| { |
| ECCState *s = opaque; |
| uint32_t ret = 0; |
| |
| switch (addr >> 2) { |
| case ECC_MER: |
| ret = s->regs[ECC_MER]; |
| trace_ecc_mem_readl_mer(ret); |
| break; |
| case ECC_MDR: |
| ret = s->regs[ECC_MDR]; |
| trace_ecc_mem_readl_mdr(ret); |
| break; |
| case ECC_MFSR: |
| ret = s->regs[ECC_MFSR]; |
| trace_ecc_mem_readl_mfsr(ret); |
| break; |
| case ECC_VCR: |
| ret = s->regs[ECC_VCR]; |
| trace_ecc_mem_readl_vcr(ret); |
| break; |
| case ECC_MFAR0: |
| ret = s->regs[ECC_MFAR0]; |
| trace_ecc_mem_readl_mfar0(ret); |
| break; |
| case ECC_MFAR1: |
| ret = s->regs[ECC_MFAR1]; |
| trace_ecc_mem_readl_mfar1(ret); |
| break; |
| case ECC_DR: |
| ret = s->regs[ECC_DR]; |
| trace_ecc_mem_readl_dr(ret); |
| break; |
| case ECC_ECR0: |
| ret = s->regs[ECC_ECR0]; |
| trace_ecc_mem_readl_ecr0(ret); |
| break; |
| case ECC_ECR1: |
| ret = s->regs[ECC_ECR0]; |
| trace_ecc_mem_readl_ecr1(ret); |
| break; |
| } |
| return ret; |
| } |
| |
| static const MemoryRegionOps ecc_mem_ops = { |
| .read = ecc_mem_read, |
| .write = ecc_mem_write, |
| .endianness = DEVICE_NATIVE_ENDIAN, |
| .valid = { |
| .min_access_size = 4, |
| .max_access_size = 4, |
| }, |
| }; |
| |
| static void ecc_diag_mem_write(void *opaque, hwaddr addr, |
| uint64_t val, unsigned size) |
| { |
| ECCState *s = opaque; |
| |
| trace_ecc_diag_mem_writeb(addr, val); |
| s->diag[addr & ECC_DIAG_MASK] = val; |
| } |
| |
| static uint64_t ecc_diag_mem_read(void *opaque, hwaddr addr, |
| unsigned size) |
| { |
| ECCState *s = opaque; |
| uint32_t ret = s->diag[(int)addr]; |
| |
| trace_ecc_diag_mem_readb(addr, ret); |
| return ret; |
| } |
| |
| static const MemoryRegionOps ecc_diag_mem_ops = { |
| .read = ecc_diag_mem_read, |
| .write = ecc_diag_mem_write, |
| .endianness = DEVICE_NATIVE_ENDIAN, |
| .valid = { |
| .min_access_size = 1, |
| .max_access_size = 1, |
| }, |
| }; |
| |
| static const VMStateDescription vmstate_ecc = { |
| .name ="ECC", |
| .version_id = 3, |
| .minimum_version_id = 3, |
| .fields = (VMStateField[]) { |
| VMSTATE_UINT32_ARRAY(regs, ECCState, ECC_NREGS), |
| VMSTATE_BUFFER(diag, ECCState), |
| VMSTATE_UINT32(version, ECCState), |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static void ecc_reset(DeviceState *d) |
| { |
| ECCState *s = ECC_MEMCTL(d); |
| |
| if (s->version == ECC_MCC) { |
| s->regs[ECC_MER] &= ECC_MER_REU; |
| } else { |
| s->regs[ECC_MER] &= (ECC_MER_VER | ECC_MER_IMPL | ECC_MER_MRR | |
| ECC_MER_DCI); |
| } |
| s->regs[ECC_MDR] = 0x20; |
| s->regs[ECC_MFSR] = 0; |
| s->regs[ECC_VCR] = 0; |
| s->regs[ECC_MFAR0] = 0x07c00000; |
| s->regs[ECC_MFAR1] = 0; |
| s->regs[ECC_DR] = 0; |
| s->regs[ECC_ECR0] = 0; |
| s->regs[ECC_ECR1] = 0; |
| } |
| |
| static void ecc_init(Object *obj) |
| { |
| ECCState *s = ECC_MEMCTL(obj); |
| SysBusDevice *dev = SYS_BUS_DEVICE(obj); |
| |
| sysbus_init_irq(dev, &s->irq); |
| |
| memory_region_init_io(&s->iomem, obj, &ecc_mem_ops, s, "ecc", ECC_SIZE); |
| sysbus_init_mmio(dev, &s->iomem); |
| } |
| |
| static void ecc_realize(DeviceState *dev, Error **errp) |
| { |
| ECCState *s = ECC_MEMCTL(dev); |
| SysBusDevice *sbd = SYS_BUS_DEVICE(dev); |
| |
| s->regs[0] = s->version; |
| |
| if (s->version == ECC_MCC) { // SS-600MP only |
| memory_region_init_io(&s->iomem_diag, OBJECT(dev), &ecc_diag_mem_ops, s, |
| "ecc.diag", ECC_DIAG_SIZE); |
| sysbus_init_mmio(sbd, &s->iomem_diag); |
| } |
| } |
| |
| static Property ecc_properties[] = { |
| DEFINE_PROP_UINT32("version", ECCState, version, -1), |
| DEFINE_PROP_END_OF_LIST(), |
| }; |
| |
| static void ecc_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| |
| dc->realize = ecc_realize; |
| dc->reset = ecc_reset; |
| dc->vmsd = &vmstate_ecc; |
| device_class_set_props(dc, ecc_properties); |
| } |
| |
| static const TypeInfo ecc_info = { |
| .name = TYPE_ECC_MEMCTL, |
| .parent = TYPE_SYS_BUS_DEVICE, |
| .instance_size = sizeof(ECCState), |
| .instance_init = ecc_init, |
| .class_init = ecc_class_init, |
| }; |
| |
| |
| static void ecc_register_types(void) |
| { |
| type_register_static(&ecc_info); |
| } |
| |
| type_init(ecc_register_types) |
