[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH] ppc/pnv: fix default PHB4 QOM hierarchy
From: |
Daniel Henrique Barboza |
Subject: |
[PATCH] ppc/pnv: fix default PHB4 QOM hierarchy |
Date: |
Fri, 18 Feb 2022 17:28:04 -0300 |
Commit 3f4c369ea63e ("ppc/pnv: make PECs create and realize PHB4s")
changed phb4_pec code to create the default PHB4 objects in
pnv_pec_default_phb_realize(). In this process the stacks[] PEC array was
removed and each PHB4 object is tied together with its PEC via the
phb->pec pointer.
This change also broke the previous QOM hierarchy - the PHB4 objects are
being created and not being parented to their respective chips. This can
be verified by 'info pic' in a powernv9 domain with default settings.
pnv_chip_power9_pic_print_info() will fail to find the PHBs because
object_child_foreach_recursive() won't find any.
The solution is to set the parent chip and the parent bus, in the same
way done for user created PHB4 devices, for all PHB4 devices.
Fixes: 3f4c369ea63e ("ppc/pnv: make PECs create and realize PHB4s")
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
---
hw/pci-host/pnv_phb4.c | 36 ++++++++++++++++--------------------
1 file changed, 16 insertions(+), 20 deletions(-)
diff --git a/hw/pci-host/pnv_phb4.c b/hw/pci-host/pnv_phb4.c
index e91249ef64..846e7d0c3e 100644
--- a/hw/pci-host/pnv_phb4.c
+++ b/hw/pci-host/pnv_phb4.c
@@ -1568,40 +1568,36 @@ static PnvPhb4PecState *pnv_phb4_get_pec(PnvChip *chip,
PnvPHB4 *phb,
static void pnv_phb4_realize(DeviceState *dev, Error **errp)
{
PnvPHB4 *phb = PNV_PHB4(dev);
+ PnvMachineState *pnv = PNV_MACHINE(qdev_get_machine());
+ PnvChip *chip = pnv_get_chip(pnv, phb->chip_id);
PCIHostState *pci = PCI_HOST_BRIDGE(dev);
XiveSource *xsrc = &phb->xsrc;
+ BusState *s;
Error *local_err = NULL;
int nr_irqs;
char name[32];
- /* User created PHB */
- if (!phb->pec) {
- PnvMachineState *pnv = PNV_MACHINE(qdev_get_machine());
- PnvChip *chip = pnv_get_chip(pnv, phb->chip_id);
- BusState *s;
-
- if (!chip) {
- error_setg(errp, "invalid chip id: %d", phb->chip_id);
- return;
- }
+ if (!chip) {
+ error_setg(errp, "invalid chip id: %d", phb->chip_id);
+ return;
+ }
+ /* User created PHBs need to be assigned to a PEC */
+ if (!phb->pec) {
phb->pec = pnv_phb4_get_pec(chip, phb, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
+ }
- /*
- * Reparent user created devices to the chip to build
- * correctly the device tree.
- */
- pnv_chip_parent_fixup(chip, OBJECT(phb), phb->phb_id);
+ /* Reparent the PHB to the chip to build the device tree */
+ pnv_chip_parent_fixup(chip, OBJECT(phb), phb->phb_id);
- s = qdev_get_parent_bus(DEVICE(chip));
- if (!qdev_set_parent_bus(DEVICE(phb), s, &local_err)) {
- error_propagate(errp, local_err);
- return;
- }
+ s = qdev_get_parent_bus(DEVICE(chip));
+ if (!qdev_set_parent_bus(DEVICE(phb), s, &local_err)) {
+ error_propagate(errp, local_err);
+ return;
}
/* Set the "big_phb" flag */
--
2.34.1
- [PATCH] ppc/pnv: fix default PHB4 QOM hierarchy,
Daniel Henrique Barboza <=