1 /* 2 * pcie.h 3 * 4 * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp> 5 * VA Linux Systems Japan K.K. 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License along 18 * with this program; if not, see <http://www.gnu.org/licenses/>. 19 */ 20 21 #ifndef QEMU_PCIE_H 22 #define QEMU_PCIE_H 23 24 #include "hw/pci/pci_regs.h" 25 #include "hw/pci/pcie_regs.h" 26 #include "hw/pci/pcie_aer.h" 27 #include "hw/hotplug.h" 28 29 typedef enum { 30 /* for attention and power indicator */ 31 PCI_EXP_HP_IND_RESERVED = PCI_EXP_SLTCTL_IND_RESERVED, 32 PCI_EXP_HP_IND_ON = PCI_EXP_SLTCTL_IND_ON, 33 PCI_EXP_HP_IND_BLINK = PCI_EXP_SLTCTL_IND_BLINK, 34 PCI_EXP_HP_IND_OFF = PCI_EXP_SLTCTL_IND_OFF, 35 } PCIExpressIndicator; 36 37 typedef enum { 38 /* these bits must match the bits in Slot Control/Status registers. 39 * PCI_EXP_HP_EV_xxx = PCI_EXP_SLTCTL_xxxE = PCI_EXP_SLTSTA_xxx 40 * 41 * Not all the bits of slot control register match with the ones of 42 * slot status. Not some bits of slot status register is used to 43 * show status, not to report event occurrence. 44 * So such bits must be masked out when checking the software 45 * notification condition. 46 */ 47 PCI_EXP_HP_EV_ABP = PCI_EXP_SLTCTL_ABPE, 48 /* attention button pressed */ 49 PCI_EXP_HP_EV_PDC = PCI_EXP_SLTCTL_PDCE, 50 /* presence detect changed */ 51 PCI_EXP_HP_EV_CCI = PCI_EXP_SLTCTL_CCIE, 52 /* command completed */ 53 54 PCI_EXP_HP_EV_SUPPORTED = PCI_EXP_HP_EV_ABP | 55 PCI_EXP_HP_EV_PDC | 56 PCI_EXP_HP_EV_CCI, 57 /* supported event mask */ 58 59 /* events not listed aren't supported */ 60 } PCIExpressHotPlugEvent; 61 62 struct PCIExpressDevice { 63 /* Offset of express capability in config space */ 64 uint8_t exp_cap; 65 /* Offset of Power Management capability in config space */ 66 uint8_t pm_cap; 67 68 /* SLOT */ 69 bool hpev_notified; /* Logical AND of conditions for hot plug event. 70 Following 6.7.3.4: 71 Software Notification of Hot-Plug Events, an interrupt 72 is sent whenever the logical and of these conditions 73 transitions from false to true. */ 74 75 /* AER */ 76 uint16_t aer_cap; 77 PCIEAERLog aer_log; 78 79 /* Offset of ATS capability in config space */ 80 uint16_t ats_cap; 81 82 /* ACS */ 83 uint16_t acs_cap; 84 }; 85 86 #define COMPAT_PROP_PCP "power_controller_present" 87 88 /* PCI express capability helper functions */ 89 int pcie_cap_init(PCIDevice *dev, uint8_t offset, uint8_t type, 90 uint8_t port, Error **errp); 91 int pcie_cap_v1_init(PCIDevice *dev, uint8_t offset, 92 uint8_t type, uint8_t port); 93 int pcie_endpoint_cap_init(PCIDevice *dev, uint8_t offset); 94 void pcie_cap_exit(PCIDevice *dev); 95 int pcie_endpoint_cap_v1_init(PCIDevice *dev, uint8_t offset); 96 void pcie_cap_v1_exit(PCIDevice *dev); 97 uint8_t pcie_cap_get_type(const PCIDevice *dev); 98 void pcie_cap_flags_set_vector(PCIDevice *dev, uint8_t vector); 99 uint8_t pcie_cap_flags_get_vector(PCIDevice *dev); 100 101 void pcie_cap_deverr_init(PCIDevice *dev); 102 void pcie_cap_deverr_reset(PCIDevice *dev); 103 104 void pcie_cap_lnkctl_init(PCIDevice *dev); 105 void pcie_cap_lnkctl_reset(PCIDevice *dev); 106 107 void pcie_cap_slot_init(PCIDevice *dev, PCIESlot *s); 108 void pcie_cap_slot_reset(PCIDevice *dev); 109 void pcie_cap_slot_get(PCIDevice *dev, uint16_t *slt_ctl, uint16_t *slt_sta); 110 void pcie_cap_slot_write_config(PCIDevice *dev, 111 uint16_t old_slt_ctl, uint16_t old_slt_sta, 112 uint32_t addr, uint32_t val, int len); 113 int pcie_cap_slot_post_load(void *opaque, int version_id); 114 void pcie_cap_slot_push_attention_button(PCIDevice *dev); 115 116 void pcie_cap_root_init(PCIDevice *dev); 117 void pcie_cap_root_reset(PCIDevice *dev); 118 119 void pcie_cap_flr_init(PCIDevice *dev); 120 void pcie_cap_flr_write_config(PCIDevice *dev, 121 uint32_t addr, uint32_t val, int len); 122 123 /* ARI forwarding capability and control */ 124 void pcie_cap_arifwd_init(PCIDevice *dev); 125 void pcie_cap_arifwd_reset(PCIDevice *dev); 126 bool pcie_cap_is_arifwd_enabled(const PCIDevice *dev); 127 128 /* PCI express extended capability helper functions */ 129 uint16_t pcie_find_capability(PCIDevice *dev, uint16_t cap_id); 130 void pcie_add_capability(PCIDevice *dev, 131 uint16_t cap_id, uint8_t cap_ver, 132 uint16_t offset, uint16_t size); 133 void pcie_sync_bridge_lnk(PCIDevice *dev); 134 135 void pcie_acs_init(PCIDevice *dev, uint16_t offset); 136 void pcie_acs_reset(PCIDevice *dev); 137 138 void pcie_ari_init(PCIDevice *dev, uint16_t offset, uint16_t nextfn); 139 void pcie_dev_ser_num_init(PCIDevice *dev, uint16_t offset, uint64_t ser_num); 140 void pcie_ats_init(PCIDevice *dev, uint16_t offset, bool aligned); 141 142 void pcie_cap_slot_pre_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, 143 Error **errp); 144 void pcie_cap_slot_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, 145 Error **errp); 146 void pcie_cap_slot_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, 147 Error **errp); 148 void pcie_cap_slot_unplug_request_cb(HotplugHandler *hotplug_dev, 149 DeviceState *dev, Error **errp); 150 #endif /* QEMU_PCIE_H */ 151