root / hw / pcie.h @ 281a26b1
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/*
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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.h" |
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#include "pci_regs.h" |
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#include "pcie_regs.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 occurence.
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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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/* TODO FLR */
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/* SLOT */
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unsigned int hpev_intx; /* INTx for hot plug event (0-3:INT[A-D]#) |
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* default is 0 = INTA#
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* If the chip wants to use other interrupt
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* line, initialize this member with the
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* desired number.
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* If the chip dynamically changes this member,
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* also initialize it when loaded as
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* appropreately.
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*/
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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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}; |
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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, uint8_t port);
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void pcie_cap_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_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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void pcie_cap_ari_init(PCIDevice *dev);
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void pcie_cap_ari_reset(PCIDevice *dev);
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bool pcie_cap_is_ari_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_ari_init(PCIDevice *dev, uint16_t offset, uint16_t nextfn);
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#endif /* QEMU_PCIE_H */ |