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Annotation of qemu/hw/pcie.h, revision 1.1

1.1     ! root        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.h"
        !            25: #include "pci_regs.h"
        !            26: #include "pcie_regs.h"
        !            27: #include "pcie_aer.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 occurence.
        !            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: 
        !            66:     /* SLOT */
        !            67:     unsigned int hpev_intx;     /* INTx for hot plug event (0-3:INT[A-D]#)
        !            68:                                  * default is 0 = INTA#
        !            69:                                  * If the chip wants to use other interrupt
        !            70:                                  * line, initialize this member with the
        !            71:                                  * desired number.
        !            72:                                  * If the chip dynamically changes this member,
        !            73:                                  * also initialize it when loaded as
        !            74:                                  * appropreately.
        !            75:                                  */
        !            76:     bool hpev_notified; /* Logical AND of conditions for hot plug event.
        !            77:                          Following 6.7.3.4:
        !            78:                          Software Notification of Hot-Plug Events, an interrupt
        !            79:                          is sent whenever the logical and of these conditions
        !            80:                          transitions from false to true. */
        !            81: 
        !            82:     /* AER */
        !            83:     uint16_t aer_cap;
        !            84:     PCIEAERLog aer_log;
        !            85:     unsigned int aer_intx;      /* INTx for error reporting
        !            86:                                  * default is 0 = INTA#
        !            87:                                  * If the chip wants to use other interrupt
        !            88:                                  * line, initialize this member with the
        !            89:                                  * desired number.
        !            90:                                  * If the chip dynamically changes this member,
        !            91:                                  * also initialize it when loaded as
        !            92:                                  * appropreately.
        !            93:                                  */
        !            94: };
        !            95: 
        !            96: /* PCI express capability helper functions */
        !            97: int pcie_cap_init(PCIDevice *dev, uint8_t offset, uint8_t type, uint8_t port);
        !            98: void pcie_cap_exit(PCIDevice *dev);
        !            99: uint8_t pcie_cap_get_type(const PCIDevice *dev);
        !           100: void pcie_cap_flags_set_vector(PCIDevice *dev, uint8_t vector);
        !           101: uint8_t pcie_cap_flags_get_vector(PCIDevice *dev);
        !           102: 
        !           103: void pcie_cap_deverr_init(PCIDevice *dev);
        !           104: void pcie_cap_deverr_reset(PCIDevice *dev);
        !           105: 
        !           106: void pcie_cap_slot_init(PCIDevice *dev, uint16_t slot);
        !           107: void pcie_cap_slot_reset(PCIDevice *dev);
        !           108: void pcie_cap_slot_write_config(PCIDevice *dev,
        !           109:                                 uint32_t addr, uint32_t val, int len);
        !           110: int pcie_cap_slot_post_load(void *opaque, int version_id);
        !           111: void pcie_cap_slot_push_attention_button(PCIDevice *dev);
        !           112: 
        !           113: void pcie_cap_root_init(PCIDevice *dev);
        !           114: void pcie_cap_root_reset(PCIDevice *dev);
        !           115: 
        !           116: void pcie_cap_flr_init(PCIDevice *dev);
        !           117: void pcie_cap_flr_write_config(PCIDevice *dev,
        !           118:                            uint32_t addr, uint32_t val, int len);
        !           119: 
        !           120: void pcie_cap_ari_init(PCIDevice *dev);
        !           121: void pcie_cap_ari_reset(PCIDevice *dev);
        !           122: bool pcie_cap_is_ari_enabled(const PCIDevice *dev);
        !           123: 
        !           124: /* PCI express extended capability helper functions */
        !           125: uint16_t pcie_find_capability(PCIDevice *dev, uint16_t cap_id);
        !           126: void pcie_add_capability(PCIDevice *dev,
        !           127:                          uint16_t cap_id, uint8_t cap_ver,
        !           128:                          uint16_t offset, uint16_t size);
        !           129: 
        !           130: void pcie_ari_init(PCIDevice *dev, uint16_t offset, uint16_t nextfn);
        !           131: 
        !           132: #endif /* QEMU_PCIE_H */

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