/* * pcie.h * * Copyright (c) 2010 Isaku Yamahata * 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 . */ #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 */