--- /dev/null
+/*
+ * 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 "hw/sysbus.h"
+#include "trace.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"
+#define ECC_MEMCTL(obj) OBJECT_CHECK(ECCState, (obj), TYPE_ECC_MEMCTL)
+
+typedef 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;
+} ECCState;
+
+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 int ecc_init1(SysBusDevice *dev)
+{
+ ECCState *s = ECC_MEMCTL(dev);
+
+ sysbus_init_irq(dev, &s->irq);
+ s->regs[0] = s->version;
+ memory_region_init_io(&s->iomem, OBJECT(dev), &ecc_mem_ops, s, "ecc", ECC_SIZE);
+ sysbus_init_mmio(dev, &s->iomem);
+
+ 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(dev, &s->iomem_diag);
+ }
+
+ return 0;
+}
+
+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);
+ SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+ k->init = ecc_init1;
+ dc->reset = ecc_reset;
+ dc->vmsd = &vmstate_ecc;
+ dc->props = ecc_properties;
+}
+
+static const TypeInfo ecc_info = {
+ .name = TYPE_ECC_MEMCTL,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(ECCState),
+ .class_init = ecc_class_init,
+};
+
+
+static void ecc_register_types(void)
+{
+ type_register_static(&ecc_info);
+}
+
+type_init(ecc_register_types)
Code Review / kvmfornfv.git / blobdiff