aboutsummaryrefslogtreecommitdiff
path: root/hw
diff options
context:
space:
mode:
authorCédric Le Goater <clg@kaod.org>2019-03-07 23:35:37 +0100
committerDavid Gibson <david@gibson.dropbear.id.au>2019-03-12 14:33:04 +1100
commit82514be28b02d8f347ceda9008df6bb5c2f0acef (patch)
tree91bb737085493be2bacee479b7a1a2fc62e65908 /hw
parent6f89f48e56723005b64260d2ab079a015db3ed64 (diff)
ppc/pnv: add a LPC Controller class model
It will ease the introduction of the LPC Controller model for POWER9. Signed-off-by: Cédric Le Goater <clg@kaod.org> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Message-Id: <20190307223548.20516-5-clg@kaod.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw')
-rw-r--r--hw/ppc/pnv.c2
-rw-r--r--hw/ppc/pnv_lpc.c85
2 files changed, 62 insertions, 25 deletions
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 1cc454cbbc..922e3ec48b 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -794,7 +794,7 @@ static void pnv_chip_power8_instance_init(Object *obj)
OBJECT(qdev_get_machine()), &error_abort);
object_initialize_child(obj, "lpc", &chip8->lpc, sizeof(chip8->lpc),
- TYPE_PNV_LPC, &error_abort, NULL);
+ TYPE_PNV8_LPC, &error_abort, NULL);
object_property_add_const_link(OBJECT(&chip8->lpc), "psi",
OBJECT(&chip8->psi), &error_abort);
diff --git a/hw/ppc/pnv_lpc.c b/hw/ppc/pnv_lpc.c
index 547be609ca..3c509a30a0 100644
--- a/hw/ppc/pnv_lpc.c
+++ b/hw/ppc/pnv_lpc.c
@@ -245,6 +245,7 @@ static const MemoryRegionOps pnv_lpc_xscom_ops = {
static void pnv_lpc_eval_irqs(PnvLpcController *lpc)
{
bool lpc_to_opb_irq = false;
+ PnvLpcClass *plc = PNV_LPC_GET_CLASS(lpc);
/* Update LPC controller to OPB line */
if (lpc->lpc_hc_irqser_ctrl & LPC_HC_IRQSER_EN) {
@@ -267,7 +268,7 @@ static void pnv_lpc_eval_irqs(PnvLpcController *lpc)
lpc->opb_irq_stat |= lpc->opb_irq_input & lpc->opb_irq_mask;
/* Reflect the interrupt */
- pnv_psi_irq_set(lpc->psi, PSIHB_IRQ_LPC_I2C, lpc->opb_irq_stat != 0);
+ pnv_psi_irq_set(lpc->psi, plc->psi_irq, lpc->opb_irq_stat != 0);
}
static uint64_t lpc_hc_read(void *opaque, hwaddr addr, unsigned size)
@@ -419,11 +420,65 @@ static const MemoryRegionOps opb_master_ops = {
},
};
+static void pnv_lpc_power8_realize(DeviceState *dev, Error **errp)
+{
+ PnvLpcController *lpc = PNV_LPC(dev);
+ PnvLpcClass *plc = PNV_LPC_GET_CLASS(dev);
+ Error *local_err = NULL;
+
+ plc->parent_realize(dev, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ /* P8 uses a XSCOM region for LPC registers */
+ pnv_xscom_region_init(&lpc->xscom_regs, OBJECT(lpc),
+ &pnv_lpc_xscom_ops, lpc, "xscom-lpc",
+ PNV_XSCOM_LPC_SIZE);
+}
+
+static void pnv_lpc_power8_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ PnvXScomInterfaceClass *xdc = PNV_XSCOM_INTERFACE_CLASS(klass);
+ PnvLpcClass *plc = PNV_LPC_CLASS(klass);
+
+ dc->desc = "PowerNV LPC Controller POWER8";
+
+ xdc->dt_xscom = pnv_lpc_dt_xscom;
+
+ plc->psi_irq = PSIHB_IRQ_LPC_I2C;
+
+ device_class_set_parent_realize(dc, pnv_lpc_power8_realize,
+ &plc->parent_realize);
+}
+
+static const TypeInfo pnv_lpc_power8_info = {
+ .name = TYPE_PNV8_LPC,
+ .parent = TYPE_PNV_LPC,
+ .instance_size = sizeof(PnvLpcController),
+ .class_init = pnv_lpc_power8_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_PNV_XSCOM_INTERFACE },
+ { }
+ }
+};
+
static void pnv_lpc_realize(DeviceState *dev, Error **errp)
{
PnvLpcController *lpc = PNV_LPC(dev);
Object *obj;
- Error *error = NULL;
+ Error *local_err = NULL;
+
+ obj = object_property_get_link(OBJECT(dev), "psi", &local_err);
+ if (!obj) {
+ error_propagate(errp, local_err);
+ error_prepend(errp, "required link 'psi' not found: ");
+ return;
+ }
+ /* The LPC controller needs PSI to generate interrupts */
+ lpc->psi = PNV_PSI(obj);
/* Reg inits */
lpc->lpc_hc_fw_rd_acc_size = LPC_HC_FW_RD_4B;
@@ -463,46 +518,28 @@ static void pnv_lpc_realize(DeviceState *dev, Error **errp)
"lpc-hc", LPC_HC_REGS_OPB_SIZE);
memory_region_add_subregion(&lpc->opb_mr, LPC_HC_REGS_OPB_ADDR,
&lpc->lpc_hc_regs);
-
- /* XScom region for LPC registers */
- pnv_xscom_region_init(&lpc->xscom_regs, OBJECT(dev),
- &pnv_lpc_xscom_ops, lpc, "xscom-lpc",
- PNV_XSCOM_LPC_SIZE);
-
- /* get PSI object from chip */
- obj = object_property_get_link(OBJECT(dev), "psi", &error);
- if (!obj) {
- error_setg(errp, "%s: required link 'psi' not found: %s",
- __func__, error_get_pretty(error));
- return;
- }
- lpc->psi = PNV_PSI(obj);
}
static void pnv_lpc_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
- PnvXScomInterfaceClass *xdc = PNV_XSCOM_INTERFACE_CLASS(klass);
-
- xdc->dt_xscom = pnv_lpc_dt_xscom;
dc->realize = pnv_lpc_realize;
+ dc->desc = "PowerNV LPC Controller";
}
static const TypeInfo pnv_lpc_info = {
.name = TYPE_PNV_LPC,
.parent = TYPE_DEVICE,
- .instance_size = sizeof(PnvLpcController),
.class_init = pnv_lpc_class_init,
- .interfaces = (InterfaceInfo[]) {
- { TYPE_PNV_XSCOM_INTERFACE },
- { }
- }
+ .class_size = sizeof(PnvLpcClass),
+ .abstract = true,
};
static void pnv_lpc_register_types(void)
{
type_register_static(&pnv_lpc_info);
+ type_register_static(&pnv_lpc_power8_info);
}
type_init(pnv_lpc_register_types)