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path: root/hw/pci-host/pnv_phb4_pec.c
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-rw-r--r--hw/pci-host/pnv_phb4_pec.c593
1 files changed, 593 insertions, 0 deletions
diff --git a/hw/pci-host/pnv_phb4_pec.c b/hw/pci-host/pnv_phb4_pec.c
new file mode 100644
index 000000000..741ddc90e
--- /dev/null
+++ b/hw/pci-host/pnv_phb4_pec.c
@@ -0,0 +1,593 @@
+/*
+ * QEMU PowerPC PowerNV (POWER9) PHB4 model
+ *
+ * Copyright (c) 2018-2020, IBM Corporation.
+ *
+ * This code is licensed under the GPL version 2 or later. See the
+ * COPYING file in the top-level directory.
+ */
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qemu-common.h"
+#include "qemu/log.h"
+#include "target/ppc/cpu.h"
+#include "hw/ppc/fdt.h"
+#include "hw/pci-host/pnv_phb4_regs.h"
+#include "hw/pci-host/pnv_phb4.h"
+#include "hw/ppc/pnv_xscom.h"
+#include "hw/pci/pci_bridge.h"
+#include "hw/pci/pci_bus.h"
+#include "hw/ppc/pnv.h"
+#include "hw/qdev-properties.h"
+
+#include <libfdt.h>
+
+#define phb_pec_error(pec, fmt, ...) \
+ qemu_log_mask(LOG_GUEST_ERROR, "phb4_pec[%d:%d]: " fmt "\n", \
+ (pec)->chip_id, (pec)->index, ## __VA_ARGS__)
+
+
+static uint64_t pnv_pec_nest_xscom_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ PnvPhb4PecState *pec = PNV_PHB4_PEC(opaque);
+ uint32_t reg = addr >> 3;
+
+ /* TODO: add list of allowed registers and error out if not */
+ return pec->nest_regs[reg];
+}
+
+static void pnv_pec_nest_xscom_write(void *opaque, hwaddr addr,
+ uint64_t val, unsigned size)
+{
+ PnvPhb4PecState *pec = PNV_PHB4_PEC(opaque);
+ uint32_t reg = addr >> 3;
+
+ switch (reg) {
+ case PEC_NEST_PBCQ_HW_CONFIG:
+ case PEC_NEST_DROP_PRIO_CTRL:
+ case PEC_NEST_PBCQ_ERR_INJECT:
+ case PEC_NEST_PCI_NEST_CLK_TRACE_CTL:
+ case PEC_NEST_PBCQ_PMON_CTRL:
+ case PEC_NEST_PBCQ_PBUS_ADDR_EXT:
+ case PEC_NEST_PBCQ_PRED_VEC_TIMEOUT:
+ case PEC_NEST_CAPP_CTRL:
+ case PEC_NEST_PBCQ_READ_STK_OVR:
+ case PEC_NEST_PBCQ_WRITE_STK_OVR:
+ case PEC_NEST_PBCQ_STORE_STK_OVR:
+ case PEC_NEST_PBCQ_RETRY_BKOFF_CTRL:
+ pec->nest_regs[reg] = val;
+ break;
+ default:
+ phb_pec_error(pec, "%s @0x%"HWADDR_PRIx"=%"PRIx64"\n", __func__,
+ addr, val);
+ }
+}
+
+static const MemoryRegionOps pnv_pec_nest_xscom_ops = {
+ .read = pnv_pec_nest_xscom_read,
+ .write = pnv_pec_nest_xscom_write,
+ .valid.min_access_size = 8,
+ .valid.max_access_size = 8,
+ .impl.min_access_size = 8,
+ .impl.max_access_size = 8,
+ .endianness = DEVICE_BIG_ENDIAN,
+};
+
+static uint64_t pnv_pec_pci_xscom_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ PnvPhb4PecState *pec = PNV_PHB4_PEC(opaque);
+ uint32_t reg = addr >> 3;
+
+ /* TODO: add list of allowed registers and error out if not */
+ return pec->pci_regs[reg];
+}
+
+static void pnv_pec_pci_xscom_write(void *opaque, hwaddr addr,
+ uint64_t val, unsigned size)
+{
+ PnvPhb4PecState *pec = PNV_PHB4_PEC(opaque);
+ uint32_t reg = addr >> 3;
+
+ switch (reg) {
+ case PEC_PCI_PBAIB_HW_CONFIG:
+ case PEC_PCI_PBAIB_READ_STK_OVR:
+ pec->pci_regs[reg] = val;
+ break;
+ default:
+ phb_pec_error(pec, "%s @0x%"HWADDR_PRIx"=%"PRIx64"\n", __func__,
+ addr, val);
+ }
+}
+
+static const MemoryRegionOps pnv_pec_pci_xscom_ops = {
+ .read = pnv_pec_pci_xscom_read,
+ .write = pnv_pec_pci_xscom_write,
+ .valid.min_access_size = 8,
+ .valid.max_access_size = 8,
+ .impl.min_access_size = 8,
+ .impl.max_access_size = 8,
+ .endianness = DEVICE_BIG_ENDIAN,
+};
+
+static uint64_t pnv_pec_stk_nest_xscom_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ PnvPhb4PecStack *stack = PNV_PHB4_PEC_STACK(opaque);
+ uint32_t reg = addr >> 3;
+
+ /* TODO: add list of allowed registers and error out if not */
+ return stack->nest_regs[reg];
+}
+
+static void pnv_pec_stk_update_map(PnvPhb4PecStack *stack)
+{
+ PnvPhb4PecState *pec = stack->pec;
+ MemoryRegion *sysmem = pec->system_memory;
+ uint64_t bar_en = stack->nest_regs[PEC_NEST_STK_BAR_EN];
+ uint64_t bar, mask, size;
+ char name[64];
+
+ /*
+ * NOTE: This will really not work well if those are remapped
+ * after the PHB has created its sub regions. We could do better
+ * if we had a way to resize regions but we don't really care
+ * that much in practice as the stuff below really only happens
+ * once early during boot
+ */
+
+ /* Handle unmaps */
+ if (memory_region_is_mapped(&stack->mmbar0) &&
+ !(bar_en & PEC_NEST_STK_BAR_EN_MMIO0)) {
+ memory_region_del_subregion(sysmem, &stack->mmbar0);
+ }
+ if (memory_region_is_mapped(&stack->mmbar1) &&
+ !(bar_en & PEC_NEST_STK_BAR_EN_MMIO1)) {
+ memory_region_del_subregion(sysmem, &stack->mmbar1);
+ }
+ if (memory_region_is_mapped(&stack->phbbar) &&
+ !(bar_en & PEC_NEST_STK_BAR_EN_PHB)) {
+ memory_region_del_subregion(sysmem, &stack->phbbar);
+ }
+ if (memory_region_is_mapped(&stack->intbar) &&
+ !(bar_en & PEC_NEST_STK_BAR_EN_INT)) {
+ memory_region_del_subregion(sysmem, &stack->intbar);
+ }
+
+ /* Update PHB */
+ pnv_phb4_update_regions(stack);
+
+ /* Handle maps */
+ if (!memory_region_is_mapped(&stack->mmbar0) &&
+ (bar_en & PEC_NEST_STK_BAR_EN_MMIO0)) {
+ bar = stack->nest_regs[PEC_NEST_STK_MMIO_BAR0] >> 8;
+ mask = stack->nest_regs[PEC_NEST_STK_MMIO_BAR0_MASK];
+ size = ((~mask) >> 8) + 1;
+ snprintf(name, sizeof(name), "pec-%d.%d-stack-%d-mmio0",
+ pec->chip_id, pec->index, stack->stack_no);
+ memory_region_init(&stack->mmbar0, OBJECT(stack), name, size);
+ memory_region_add_subregion(sysmem, bar, &stack->mmbar0);
+ stack->mmio0_base = bar;
+ stack->mmio0_size = size;
+ }
+ if (!memory_region_is_mapped(&stack->mmbar1) &&
+ (bar_en & PEC_NEST_STK_BAR_EN_MMIO1)) {
+ bar = stack->nest_regs[PEC_NEST_STK_MMIO_BAR1] >> 8;
+ mask = stack->nest_regs[PEC_NEST_STK_MMIO_BAR1_MASK];
+ size = ((~mask) >> 8) + 1;
+ snprintf(name, sizeof(name), "pec-%d.%d-stack-%d-mmio1",
+ pec->chip_id, pec->index, stack->stack_no);
+ memory_region_init(&stack->mmbar1, OBJECT(stack), name, size);
+ memory_region_add_subregion(sysmem, bar, &stack->mmbar1);
+ stack->mmio1_base = bar;
+ stack->mmio1_size = size;
+ }
+ if (!memory_region_is_mapped(&stack->phbbar) &&
+ (bar_en & PEC_NEST_STK_BAR_EN_PHB)) {
+ bar = stack->nest_regs[PEC_NEST_STK_PHB_REGS_BAR] >> 8;
+ size = PNV_PHB4_NUM_REGS << 3;
+ snprintf(name, sizeof(name), "pec-%d.%d-stack-%d-phb",
+ pec->chip_id, pec->index, stack->stack_no);
+ memory_region_init(&stack->phbbar, OBJECT(stack), name, size);
+ memory_region_add_subregion(sysmem, bar, &stack->phbbar);
+ }
+ if (!memory_region_is_mapped(&stack->intbar) &&
+ (bar_en & PEC_NEST_STK_BAR_EN_INT)) {
+ bar = stack->nest_regs[PEC_NEST_STK_INT_BAR] >> 8;
+ size = PNV_PHB4_MAX_INTs << 16;
+ snprintf(name, sizeof(name), "pec-%d.%d-stack-%d-int",
+ stack->pec->chip_id, stack->pec->index, stack->stack_no);
+ memory_region_init(&stack->intbar, OBJECT(stack), name, size);
+ memory_region_add_subregion(sysmem, bar, &stack->intbar);
+ }
+
+ /* Update PHB */
+ pnv_phb4_update_regions(stack);
+}
+
+static void pnv_pec_stk_nest_xscom_write(void *opaque, hwaddr addr,
+ uint64_t val, unsigned size)
+{
+ PnvPhb4PecStack *stack = PNV_PHB4_PEC_STACK(opaque);
+ PnvPhb4PecState *pec = stack->pec;
+ uint32_t reg = addr >> 3;
+
+ switch (reg) {
+ case PEC_NEST_STK_PCI_NEST_FIR:
+ stack->nest_regs[PEC_NEST_STK_PCI_NEST_FIR] = val;
+ break;
+ case PEC_NEST_STK_PCI_NEST_FIR_CLR:
+ stack->nest_regs[PEC_NEST_STK_PCI_NEST_FIR] &= val;
+ break;
+ case PEC_NEST_STK_PCI_NEST_FIR_SET:
+ stack->nest_regs[PEC_NEST_STK_PCI_NEST_FIR] |= val;
+ break;
+ case PEC_NEST_STK_PCI_NEST_FIR_MSK:
+ stack->nest_regs[PEC_NEST_STK_PCI_NEST_FIR_MSK] = val;
+ break;
+ case PEC_NEST_STK_PCI_NEST_FIR_MSKC:
+ stack->nest_regs[PEC_NEST_STK_PCI_NEST_FIR_MSK] &= val;
+ break;
+ case PEC_NEST_STK_PCI_NEST_FIR_MSKS:
+ stack->nest_regs[PEC_NEST_STK_PCI_NEST_FIR_MSK] |= val;
+ break;
+ case PEC_NEST_STK_PCI_NEST_FIR_ACT0:
+ case PEC_NEST_STK_PCI_NEST_FIR_ACT1:
+ stack->nest_regs[reg] = val;
+ break;
+ case PEC_NEST_STK_PCI_NEST_FIR_WOF:
+ stack->nest_regs[reg] = 0;
+ break;
+ case PEC_NEST_STK_ERR_REPORT_0:
+ case PEC_NEST_STK_ERR_REPORT_1:
+ case PEC_NEST_STK_PBCQ_GNRL_STATUS:
+ /* Flag error ? */
+ break;
+ case PEC_NEST_STK_PBCQ_MODE:
+ stack->nest_regs[reg] = val & 0xff00000000000000ull;
+ break;
+ case PEC_NEST_STK_MMIO_BAR0:
+ case PEC_NEST_STK_MMIO_BAR0_MASK:
+ case PEC_NEST_STK_MMIO_BAR1:
+ case PEC_NEST_STK_MMIO_BAR1_MASK:
+ if (stack->nest_regs[PEC_NEST_STK_BAR_EN] &
+ (PEC_NEST_STK_BAR_EN_MMIO0 |
+ PEC_NEST_STK_BAR_EN_MMIO1)) {
+ phb_pec_error(pec, "Changing enabled BAR unsupported\n");
+ }
+ stack->nest_regs[reg] = val & 0xffffffffff000000ull;
+ break;
+ case PEC_NEST_STK_PHB_REGS_BAR:
+ if (stack->nest_regs[PEC_NEST_STK_BAR_EN] & PEC_NEST_STK_BAR_EN_PHB) {
+ phb_pec_error(pec, "Changing enabled BAR unsupported\n");
+ }
+ stack->nest_regs[reg] = val & 0xffffffffffc00000ull;
+ break;
+ case PEC_NEST_STK_INT_BAR:
+ if (stack->nest_regs[PEC_NEST_STK_BAR_EN] & PEC_NEST_STK_BAR_EN_INT) {
+ phb_pec_error(pec, "Changing enabled BAR unsupported\n");
+ }
+ stack->nest_regs[reg] = val & 0xfffffff000000000ull;
+ break;
+ case PEC_NEST_STK_BAR_EN:
+ stack->nest_regs[reg] = val & 0xf000000000000000ull;
+ pnv_pec_stk_update_map(stack);
+ break;
+ case PEC_NEST_STK_DATA_FRZ_TYPE:
+ case PEC_NEST_STK_PBCQ_TUN_BAR:
+ /* Not used for now */
+ stack->nest_regs[reg] = val;
+ break;
+ default:
+ qemu_log_mask(LOG_UNIMP, "phb4_pec: nest_xscom_write 0x%"HWADDR_PRIx
+ "=%"PRIx64"\n", addr, val);
+ }
+}
+
+static const MemoryRegionOps pnv_pec_stk_nest_xscom_ops = {
+ .read = pnv_pec_stk_nest_xscom_read,
+ .write = pnv_pec_stk_nest_xscom_write,
+ .valid.min_access_size = 8,
+ .valid.max_access_size = 8,
+ .impl.min_access_size = 8,
+ .impl.max_access_size = 8,
+ .endianness = DEVICE_BIG_ENDIAN,
+};
+
+static uint64_t pnv_pec_stk_pci_xscom_read(void *opaque, hwaddr addr,
+ unsigned size)
+{
+ PnvPhb4PecStack *stack = PNV_PHB4_PEC_STACK(opaque);
+ uint32_t reg = addr >> 3;
+
+ /* TODO: add list of allowed registers and error out if not */
+ return stack->pci_regs[reg];
+}
+
+static void pnv_pec_stk_pci_xscom_write(void *opaque, hwaddr addr,
+ uint64_t val, unsigned size)
+{
+ PnvPhb4PecStack *stack = PNV_PHB4_PEC_STACK(opaque);
+ uint32_t reg = addr >> 3;
+
+ switch (reg) {
+ case PEC_PCI_STK_PCI_FIR:
+ stack->nest_regs[reg] = val;
+ break;
+ case PEC_PCI_STK_PCI_FIR_CLR:
+ stack->nest_regs[PEC_PCI_STK_PCI_FIR] &= val;
+ break;
+ case PEC_PCI_STK_PCI_FIR_SET:
+ stack->nest_regs[PEC_PCI_STK_PCI_FIR] |= val;
+ break;
+ case PEC_PCI_STK_PCI_FIR_MSK:
+ stack->nest_regs[reg] = val;
+ break;
+ case PEC_PCI_STK_PCI_FIR_MSKC:
+ stack->nest_regs[PEC_PCI_STK_PCI_FIR_MSK] &= val;
+ break;
+ case PEC_PCI_STK_PCI_FIR_MSKS:
+ stack->nest_regs[PEC_PCI_STK_PCI_FIR_MSK] |= val;
+ break;
+ case PEC_PCI_STK_PCI_FIR_ACT0:
+ case PEC_PCI_STK_PCI_FIR_ACT1:
+ stack->nest_regs[reg] = val;
+ break;
+ case PEC_PCI_STK_PCI_FIR_WOF:
+ stack->nest_regs[reg] = 0;
+ break;
+ case PEC_PCI_STK_ETU_RESET:
+ stack->nest_regs[reg] = val & 0x8000000000000000ull;
+ /* TODO: Implement reset */
+ break;
+ case PEC_PCI_STK_PBAIB_ERR_REPORT:
+ break;
+ case PEC_PCI_STK_PBAIB_TX_CMD_CRED:
+ case PEC_PCI_STK_PBAIB_TX_DAT_CRED:
+ stack->nest_regs[reg] = val;
+ break;
+ default:
+ qemu_log_mask(LOG_UNIMP, "phb4_pec_stk: pci_xscom_write 0x%"HWADDR_PRIx
+ "=%"PRIx64"\n", addr, val);
+ }
+}
+
+static const MemoryRegionOps pnv_pec_stk_pci_xscom_ops = {
+ .read = pnv_pec_stk_pci_xscom_read,
+ .write = pnv_pec_stk_pci_xscom_write,
+ .valid.min_access_size = 8,
+ .valid.max_access_size = 8,
+ .impl.min_access_size = 8,
+ .impl.max_access_size = 8,
+ .endianness = DEVICE_BIG_ENDIAN,
+};
+
+static void pnv_pec_instance_init(Object *obj)
+{
+ PnvPhb4PecState *pec = PNV_PHB4_PEC(obj);
+ int i;
+
+ for (i = 0; i < PHB4_PEC_MAX_STACKS; i++) {
+ object_initialize_child(obj, "stack[*]", &pec->stacks[i],
+ TYPE_PNV_PHB4_PEC_STACK);
+ }
+}
+
+static void pnv_pec_realize(DeviceState *dev, Error **errp)
+{
+ PnvPhb4PecState *pec = PNV_PHB4_PEC(dev);
+ char name[64];
+ int i;
+
+ assert(pec->system_memory);
+
+ /* Create stacks */
+ for (i = 0; i < pec->num_stacks; i++) {
+ PnvPhb4PecStack *stack = &pec->stacks[i];
+ Object *stk_obj = OBJECT(stack);
+
+ object_property_set_int(stk_obj, "stack-no", i, &error_abort);
+ object_property_set_link(stk_obj, "pec", OBJECT(pec), &error_abort);
+ if (!qdev_realize(DEVICE(stk_obj), NULL, errp)) {
+ return;
+ }
+ }
+ for (; i < PHB4_PEC_MAX_STACKS; i++) {
+ object_unparent(OBJECT(&pec->stacks[i]));
+ }
+
+ /* Initialize the XSCOM regions for the PEC registers */
+ snprintf(name, sizeof(name), "xscom-pec-%d.%d-nest", pec->chip_id,
+ pec->index);
+ pnv_xscom_region_init(&pec->nest_regs_mr, OBJECT(dev),
+ &pnv_pec_nest_xscom_ops, pec, name,
+ PHB4_PEC_NEST_REGS_COUNT);
+
+ snprintf(name, sizeof(name), "xscom-pec-%d.%d-pci", pec->chip_id,
+ pec->index);
+ pnv_xscom_region_init(&pec->pci_regs_mr, OBJECT(dev),
+ &pnv_pec_pci_xscom_ops, pec, name,
+ PHB4_PEC_PCI_REGS_COUNT);
+}
+
+static int pnv_pec_dt_xscom(PnvXScomInterface *dev, void *fdt,
+ int xscom_offset)
+{
+ PnvPhb4PecState *pec = PNV_PHB4_PEC(dev);
+ PnvPhb4PecClass *pecc = PNV_PHB4_PEC_GET_CLASS(dev);
+ uint32_t nbase = pecc->xscom_nest_base(pec);
+ uint32_t pbase = pecc->xscom_pci_base(pec);
+ int offset, i;
+ char *name;
+ uint32_t reg[] = {
+ cpu_to_be32(nbase),
+ cpu_to_be32(pecc->xscom_nest_size),
+ cpu_to_be32(pbase),
+ cpu_to_be32(pecc->xscom_pci_size),
+ };
+
+ name = g_strdup_printf("pbcq@%x", nbase);
+ offset = fdt_add_subnode(fdt, xscom_offset, name);
+ _FDT(offset);
+ g_free(name);
+
+ _FDT((fdt_setprop(fdt, offset, "reg", reg, sizeof(reg))));
+
+ _FDT((fdt_setprop_cell(fdt, offset, "ibm,pec-index", pec->index)));
+ _FDT((fdt_setprop_cell(fdt, offset, "#address-cells", 1)));
+ _FDT((fdt_setprop_cell(fdt, offset, "#size-cells", 0)));
+ _FDT((fdt_setprop(fdt, offset, "compatible", pecc->compat,
+ pecc->compat_size)));
+
+ for (i = 0; i < pec->num_stacks; i++) {
+ PnvPhb4PecStack *stack = &pec->stacks[i];
+ PnvPHB4 *phb = &stack->phb;
+ int stk_offset;
+
+ name = g_strdup_printf("stack@%x", i);
+ stk_offset = fdt_add_subnode(fdt, offset, name);
+ _FDT(stk_offset);
+ g_free(name);
+ _FDT((fdt_setprop(fdt, stk_offset, "compatible", pecc->stk_compat,
+ pecc->stk_compat_size)));
+ _FDT((fdt_setprop_cell(fdt, stk_offset, "reg", i)));
+ _FDT((fdt_setprop_cell(fdt, stk_offset, "ibm,phb-index", phb->phb_id)));
+ }
+
+ return 0;
+}
+
+static Property pnv_pec_properties[] = {
+ DEFINE_PROP_UINT32("index", PnvPhb4PecState, index, 0),
+ DEFINE_PROP_UINT32("num-stacks", PnvPhb4PecState, num_stacks, 0),
+ DEFINE_PROP_UINT32("chip-id", PnvPhb4PecState, chip_id, 0),
+ DEFINE_PROP_LINK("system-memory", PnvPhb4PecState, system_memory,
+ TYPE_MEMORY_REGION, MemoryRegion *),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static uint32_t pnv_pec_xscom_pci_base(PnvPhb4PecState *pec)
+{
+ return PNV9_XSCOM_PEC_PCI_BASE + 0x1000000 * pec->index;
+}
+
+static uint32_t pnv_pec_xscom_nest_base(PnvPhb4PecState *pec)
+{
+ return PNV9_XSCOM_PEC_NEST_BASE + 0x400 * pec->index;
+}
+
+static void pnv_pec_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ PnvXScomInterfaceClass *xdc = PNV_XSCOM_INTERFACE_CLASS(klass);
+ PnvPhb4PecClass *pecc = PNV_PHB4_PEC_CLASS(klass);
+ static const char compat[] = "ibm,power9-pbcq";
+ static const char stk_compat[] = "ibm,power9-phb-stack";
+
+ xdc->dt_xscom = pnv_pec_dt_xscom;
+
+ dc->realize = pnv_pec_realize;
+ device_class_set_props(dc, pnv_pec_properties);
+ dc->user_creatable = false;
+
+ pecc->xscom_nest_base = pnv_pec_xscom_nest_base;
+ pecc->xscom_pci_base = pnv_pec_xscom_pci_base;
+ pecc->xscom_nest_size = PNV9_XSCOM_PEC_NEST_SIZE;
+ pecc->xscom_pci_size = PNV9_XSCOM_PEC_PCI_SIZE;
+ pecc->compat = compat;
+ pecc->compat_size = sizeof(compat);
+ pecc->stk_compat = stk_compat;
+ pecc->stk_compat_size = sizeof(stk_compat);
+}
+
+static const TypeInfo pnv_pec_type_info = {
+ .name = TYPE_PNV_PHB4_PEC,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(PnvPhb4PecState),
+ .instance_init = pnv_pec_instance_init,
+ .class_init = pnv_pec_class_init,
+ .class_size = sizeof(PnvPhb4PecClass),
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_PNV_XSCOM_INTERFACE },
+ { }
+ }
+};
+
+static void pnv_pec_stk_instance_init(Object *obj)
+{
+ PnvPhb4PecStack *stack = PNV_PHB4_PEC_STACK(obj);
+
+ object_initialize_child(obj, "phb", &stack->phb, TYPE_PNV_PHB4);
+}
+
+static void pnv_pec_stk_realize(DeviceState *dev, Error **errp)
+{
+ PnvPhb4PecStack *stack = PNV_PHB4_PEC_STACK(dev);
+ PnvPhb4PecState *pec = stack->pec;
+ char name[64];
+
+ assert(pec);
+
+ /* Initialize the XSCOM regions for the stack registers */
+ snprintf(name, sizeof(name), "xscom-pec-%d.%d-nest-stack-%d",
+ pec->chip_id, pec->index, stack->stack_no);
+ pnv_xscom_region_init(&stack->nest_regs_mr, OBJECT(stack),
+ &pnv_pec_stk_nest_xscom_ops, stack, name,
+ PHB4_PEC_NEST_STK_REGS_COUNT);
+
+ snprintf(name, sizeof(name), "xscom-pec-%d.%d-pci-stack-%d",
+ pec->chip_id, pec->index, stack->stack_no);
+ pnv_xscom_region_init(&stack->pci_regs_mr, OBJECT(stack),
+ &pnv_pec_stk_pci_xscom_ops, stack, name,
+ PHB4_PEC_PCI_STK_REGS_COUNT);
+
+ /* PHB pass-through */
+ snprintf(name, sizeof(name), "xscom-pec-%d.%d-pci-stack-%d-phb",
+ pec->chip_id, pec->index, stack->stack_no);
+ pnv_xscom_region_init(&stack->phb_regs_mr, OBJECT(&stack->phb),
+ &pnv_phb4_xscom_ops, &stack->phb, name, 0x40);
+
+ /*
+ * Let the machine/chip realize the PHB object to customize more
+ * easily some fields
+ */
+}
+
+static Property pnv_pec_stk_properties[] = {
+ DEFINE_PROP_UINT32("stack-no", PnvPhb4PecStack, stack_no, 0),
+ DEFINE_PROP_LINK("pec", PnvPhb4PecStack, pec, TYPE_PNV_PHB4_PEC,
+ PnvPhb4PecState *),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void pnv_pec_stk_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ device_class_set_props(dc, pnv_pec_stk_properties);
+ dc->realize = pnv_pec_stk_realize;
+ dc->user_creatable = false;
+
+ /* TODO: reset regs ? */
+}
+
+static const TypeInfo pnv_pec_stk_type_info = {
+ .name = TYPE_PNV_PHB4_PEC_STACK,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(PnvPhb4PecStack),
+ .instance_init = pnv_pec_stk_instance_init,
+ .class_init = pnv_pec_stk_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_PNV_XSCOM_INTERFACE },
+ { }
+ }
+};
+
+static void pnv_pec_register_types(void)
+{
+ type_register_static(&pnv_pec_type_info);
+ type_register_static(&pnv_pec_stk_type_info);
+}
+
+type_init(pnv_pec_register_types);