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pcie, virtio: Remove redundant pm_cap

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The pm_cap on the PCIExpressDevice object can be distilled down
to the new instance on the PCIDevice object.

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250225215237.3314011-5-alex.williamson@redhat.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Alex Williamson 2025-02-25 14:52:28 -07:00 • committed by Cédric Le Goater
parent 05c6a8eff6
commit 8b8d08cf29
3 changed files with 3 additions and 8 deletions
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1
hw/pci-bridge/pcie_pci_bridge.c
View file

@ -56,7 +56,6 @@ static void pcie_pci_bridge_realize(PCIDevice *d, Error **errp)
if (pos < 0) {
goto pm_error;
}
d->exp.pm_cap = pos;
pci_set_word(d->config + pos + PCI_PM_PMC, 0x3);
pcie_cap_arifwd_init(d);

8
hw/virtio/virtio-pci.c
View file

@ -2209,8 +2209,6 @@ static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp)
return;
}
pci_dev->exp.pm_cap = pos;
/*
* Indicates that this function complies with revision 1.2 of the
* PCI Power Management Interface Specification.
@ -2309,11 +2307,11 @@ static bool virtio_pci_no_soft_reset(PCIDevice *dev)
{
uint16_t pmcsr;
if (!pci_is_express(dev) || !dev->exp.pm_cap) {
if (!pci_is_express(dev) || !(dev->cap_present & QEMU_PCI_CAP_PM)) {
return false;
}
pmcsr = pci_get_word(dev->config + dev->exp.pm_cap + PCI_PM_CTRL);
pmcsr = pci_get_word(dev->config + dev->pm_cap + PCI_PM_CTRL);
/*
* When No_Soft_Reset bit is set and the device
@ -2342,7 +2340,7 @@ static void virtio_pci_bus_reset_hold(Object *obj, ResetType type)
if (proxy->flags & VIRTIO_PCI_FLAG_INIT_PM) {
pci_word_test_and_clear_mask(
dev->config + dev->exp.pm_cap + PCI_PM_CTRL,
dev->config + dev->pm_cap + PCI_PM_CTRL,
PCI_PM_CTRL_STATE_MASK);
}
}

2
include/hw/pci/pcie.h
View file

@ -58,8 +58,6 @@ typedef enum {
struct PCIExpressDevice {
/* Offset of express capability in config space */
uint8_t exp_cap;
/* Offset of Power Management capability in config space */
uint8_t pm_cap;
/* SLOT */
bool hpev_notified; /* Logical AND of conditions for hot plug event.