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/*
* pcie.h
*
* Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
* VA Linux Systems Japan K.K.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef QEMU_PCIE_H
#define QEMU_PCIE_H
#include "hw.h"
#include "pci_regs.h"
#include "pcie_regs.h"
typedef enum {
/* for attention and power indicator */
PCI_EXP_HP_IND_RESERVED = PCI_EXP_SLTCTL_IND_RESERVED,
PCI_EXP_HP_IND_ON = PCI_EXP_SLTCTL_IND_ON,
PCI_EXP_HP_IND_BLINK = PCI_EXP_SLTCTL_IND_BLINK,
PCI_EXP_HP_IND_OFF = PCI_EXP_SLTCTL_IND_OFF,
} PCIExpressIndicator;
typedef enum {
/* these bits must match the bits in Slot Control/Status registers.
* PCI_EXP_HP_EV_xxx = PCI_EXP_SLTCTL_xxxE = PCI_EXP_SLTSTA_xxx
*
* Not all the bits of slot control register match with the ones of
* slot status. Not some bits of slot status register is used to
* show status, not to report event occurence.
* So such bits must be masked out when checking the software
* notification condition.
*/
PCI_EXP_HP_EV_ABP = PCI_EXP_SLTCTL_ABPE,
/* attention button pressed */
PCI_EXP_HP_EV_PDC = PCI_EXP_SLTCTL_PDCE,
/* presence detect changed */
PCI_EXP_HP_EV_CCI = PCI_EXP_SLTCTL_CCIE,
/* command completed */
PCI_EXP_HP_EV_SUPPORTED = PCI_EXP_HP_EV_ABP |
PCI_EXP_HP_EV_PDC |
PCI_EXP_HP_EV_CCI,
/* supported event mask */
/* events not listed aren't supported */
} PCIExpressHotPlugEvent;
struct PCIExpressDevice {
/* Offset of express capability in config space */
uint8_t exp_cap;
/* TODO FLR */
/* SLOT */
unsigned int hpev_intx; /* INTx for hot plug event (0-3:INT[A-D]#)
* default is 0 = INTA#
* If the chip wants to use other interrupt
* line, initialize this member with the
* desired number.
* If the chip dynamically changes this member,
* also initialize it when loaded as
* appropreately.
*/
bool hpev_notified; /* Logical AND of conditions for hot plug event.
Following 6.7.3.4:
Software Notification of Hot-Plug Events, an interrupt
is sent whenever the logical and of these conditions
transitions from false to true. */
};
/* PCI express capability helper functions */
int pcie_cap_init(PCIDevice *dev, uint8_t offset, uint8_t type, uint8_t port);
void pcie_cap_exit(PCIDevice *dev);
uint8_t pcie_cap_get_type(const PCIDevice *dev);
void pcie_cap_flags_set_vector(PCIDevice *dev, uint8_t vector);
uint8_t pcie_cap_flags_get_vector(PCIDevice *dev);
void pcie_cap_deverr_init(PCIDevice *dev);
void pcie_cap_deverr_reset(PCIDevice *dev);
void pcie_cap_slot_init(PCIDevice *dev, uint16_t slot);
void pcie_cap_slot_reset(PCIDevice *dev);
void pcie_cap_slot_write_config(PCIDevice *dev,
uint32_t addr, uint32_t val, int len);
int pcie_cap_slot_post_load(void *opaque, int version_id);
void pcie_cap_slot_push_attention_button(PCIDevice *dev);
void pcie_cap_root_init(PCIDevice *dev);
void pcie_cap_root_reset(PCIDevice *dev);
void pcie_cap_flr_init(PCIDevice *dev);
void pcie_cap_flr_write_config(PCIDevice *dev,
uint32_t addr, uint32_t val, int len);
void pcie_cap_ari_init(PCIDevice *dev);
void pcie_cap_ari_reset(PCIDevice *dev);
bool pcie_cap_is_ari_enabled(const PCIDevice *dev);
/* PCI express extended capability helper functions */
uint16_t pcie_find_capability(PCIDevice *dev, uint16_t cap_id);
void pcie_add_capability(PCIDevice *dev,
uint16_t cap_id, uint8_t cap_ver,
uint16_t offset, uint16_t size);
void pcie_ari_init(PCIDevice *dev, uint16_t offset, uint16_t nextfn);
#endif /* QEMU_PCIE_H */
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