b9731850d7
We better stop right away. For now, errors would be partially ignored (so the guest might get informed or the device might get unplugged), although actual plug/unplug will be reported as failed to the user. While at it, properly move the check to the pre_plug handler for the plug case, as we can test the slot state before the device will be realized. Reviewed-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: David Hildenbrand <david@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
144 lines
5.6 KiB
C
144 lines
5.6 KiB
C
/*
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* pcie.h
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*
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* Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
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* VA Linux Systems Japan K.K.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef QEMU_PCIE_H
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#define QEMU_PCIE_H
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#include "hw/hw.h"
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#include "hw/pci/pci_regs.h"
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#include "hw/pci/pcie_regs.h"
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#include "hw/pci/pcie_aer.h"
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#include "hw/hotplug.h"
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typedef enum {
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/* for attention and power indicator */
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PCI_EXP_HP_IND_RESERVED = PCI_EXP_SLTCTL_IND_RESERVED,
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PCI_EXP_HP_IND_ON = PCI_EXP_SLTCTL_IND_ON,
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PCI_EXP_HP_IND_BLINK = PCI_EXP_SLTCTL_IND_BLINK,
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PCI_EXP_HP_IND_OFF = PCI_EXP_SLTCTL_IND_OFF,
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} PCIExpressIndicator;
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typedef enum {
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/* these bits must match the bits in Slot Control/Status registers.
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* PCI_EXP_HP_EV_xxx = PCI_EXP_SLTCTL_xxxE = PCI_EXP_SLTSTA_xxx
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*
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* Not all the bits of slot control register match with the ones of
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* slot status. Not some bits of slot status register is used to
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* show status, not to report event occurrence.
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* So such bits must be masked out when checking the software
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* notification condition.
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*/
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PCI_EXP_HP_EV_ABP = PCI_EXP_SLTCTL_ABPE,
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/* attention button pressed */
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PCI_EXP_HP_EV_PDC = PCI_EXP_SLTCTL_PDCE,
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/* presence detect changed */
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PCI_EXP_HP_EV_CCI = PCI_EXP_SLTCTL_CCIE,
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/* command completed */
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PCI_EXP_HP_EV_SUPPORTED = PCI_EXP_HP_EV_ABP |
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PCI_EXP_HP_EV_PDC |
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PCI_EXP_HP_EV_CCI,
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/* supported event mask */
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/* events not listed aren't supported */
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} PCIExpressHotPlugEvent;
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struct PCIExpressDevice {
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/* Offset of express capability in config space */
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uint8_t exp_cap;
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/* Offset of Power Management capability in config space */
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uint8_t pm_cap;
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/* SLOT */
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bool hpev_notified; /* Logical AND of conditions for hot plug event.
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Following 6.7.3.4:
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Software Notification of Hot-Plug Events, an interrupt
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is sent whenever the logical and of these conditions
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transitions from false to true. */
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/* AER */
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uint16_t aer_cap;
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PCIEAERLog aer_log;
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/* Offset of ATS capability in config space */
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uint16_t ats_cap;
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};
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#define COMPAT_PROP_PCP "power_controller_present"
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/* PCI express capability helper functions */
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int pcie_cap_init(PCIDevice *dev, uint8_t offset, uint8_t type,
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uint8_t port, Error **errp);
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int pcie_cap_v1_init(PCIDevice *dev, uint8_t offset,
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uint8_t type, uint8_t port);
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int pcie_endpoint_cap_init(PCIDevice *dev, uint8_t offset);
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void pcie_cap_exit(PCIDevice *dev);
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int pcie_endpoint_cap_v1_init(PCIDevice *dev, uint8_t offset);
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void pcie_cap_v1_exit(PCIDevice *dev);
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uint8_t pcie_cap_get_type(const PCIDevice *dev);
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void pcie_cap_flags_set_vector(PCIDevice *dev, uint8_t vector);
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uint8_t pcie_cap_flags_get_vector(PCIDevice *dev);
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void pcie_cap_deverr_init(PCIDevice *dev);
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void pcie_cap_deverr_reset(PCIDevice *dev);
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void pcie_cap_lnkctl_init(PCIDevice *dev);
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void pcie_cap_lnkctl_reset(PCIDevice *dev);
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void pcie_cap_slot_init(PCIDevice *dev, uint16_t slot);
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void pcie_cap_slot_reset(PCIDevice *dev);
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void pcie_cap_slot_write_config(PCIDevice *dev,
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uint32_t addr, uint32_t val, int len);
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int pcie_cap_slot_post_load(void *opaque, int version_id);
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void pcie_cap_slot_push_attention_button(PCIDevice *dev);
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void pcie_cap_root_init(PCIDevice *dev);
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void pcie_cap_root_reset(PCIDevice *dev);
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void pcie_cap_flr_init(PCIDevice *dev);
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void pcie_cap_flr_write_config(PCIDevice *dev,
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uint32_t addr, uint32_t val, int len);
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/* ARI forwarding capability and control */
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void pcie_cap_arifwd_init(PCIDevice *dev);
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void pcie_cap_arifwd_reset(PCIDevice *dev);
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bool pcie_cap_is_arifwd_enabled(const PCIDevice *dev);
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/* PCI express extended capability helper functions */
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uint16_t pcie_find_capability(PCIDevice *dev, uint16_t cap_id);
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void pcie_add_capability(PCIDevice *dev,
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uint16_t cap_id, uint8_t cap_ver,
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uint16_t offset, uint16_t size);
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void pcie_sync_bridge_lnk(PCIDevice *dev);
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void pcie_ari_init(PCIDevice *dev, uint16_t offset, uint16_t nextfn);
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void pcie_dev_ser_num_init(PCIDevice *dev, uint16_t offset, uint64_t ser_num);
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void pcie_ats_init(PCIDevice *dev, uint16_t offset);
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void pcie_cap_slot_pre_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
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Error **errp);
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void pcie_cap_slot_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
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Error **errp);
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void pcie_cap_slot_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
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Error **errp);
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void pcie_cap_slot_unplug_request_cb(HotplugHandler *hotplug_dev,
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DeviceState *dev, Error **errp);
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#endif /* QEMU_PCIE_H */
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