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hw/pcie: implement power controller functionality

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It is needed by hot-unplug in order to get an indication
from the OS when the device can be physically detached.

Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Marcel Apfelbaum 2014-06-23 17:32:48 +03:00 • committed by Michael S. Tsirkin
parent e4bcd27c86
commit f23b6bdc3c
7 changed files with 62 additions and 2 deletions
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3
include/hw/pci/pci.h
View file

@ -158,6 +158,9 @@ enum {
QEMU_PCI_CAP_SHPC = (1 << QEMU_PCI_SHPC_BITNR),
#define QEMU_PCI_SLOTID_BITNR 6
QEMU_PCI_CAP_SLOTID = (1 << QEMU_PCI_SLOTID_BITNR),
/* PCI Express capability - Power Controller Present */
#define QEMU_PCIE_SLTCAP_PCP_BITNR 7
QEMU_PCIE_SLTCAP_PCP = (1 << QEMU_PCIE_SLTCAP_PCP_BITNR),
};
#define TYPE_PCI_DEVICE "pci-device"

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

@ -76,6 +76,8 @@ struct PCIExpressDevice {
PCIEAERLog aer_log;
};
#define COMPAT_PROP_PCP "power_controller_present"
/* PCI express capability helper functions */
int pcie_cap_init(PCIDevice *dev, uint8_t offset, uint8_t type, uint8_t port);
int pcie_endpoint_cap_init(PCIDevice *dev, uint8_t offset);

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

@ -57,6 +57,8 @@
#define PCI_EXP_SLTCTL_PIC_SHIFT (ffs(PCI_EXP_SLTCTL_PIC) - 1)
#define PCI_EXP_SLTCTL_PIC_OFF \
(PCI_EXP_SLTCTL_IND_OFF << PCI_EXP_SLTCTL_PIC_SHIFT)
#define PCI_EXP_SLTCTL_PIC_ON \
(PCI_EXP_SLTCTL_IND_ON << PCI_EXP_SLTCTL_PIC_SHIFT)
#define PCI_EXP_SLTCTL_SUPPORTED \
(PCI_EXP_SLTCTL_ABPE | \