4 * Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
5 * VA Linux Systems Japan K.K.
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.
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.
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/>.
25 #include "hw/pci/pci_regs.h"
26 #include "hw/pci/pcie_regs.h"
27 #include "hw/pci/pcie_aer.h"
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
;
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
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.
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 */
54 PCI_EXP_HP_EV_SUPPORTED
= PCI_EXP_HP_EV_ABP
|
57 /* supported event mask */
59 /* events not listed aren't supported */
60 } PCIExpressHotPlugEvent
;
62 struct PCIExpressDevice
{
63 /* Offset of express capability in config space */
67 bool hpev_notified
; /* Logical AND of conditions for hot plug event.
69 Software Notification of Hot-Plug Events, an interrupt
70 is sent whenever the logical and of these conditions
71 transitions from false to true. */
78 /* PCI express capability helper functions */
79 int pcie_cap_init(PCIDevice
*dev
, uint8_t offset
, uint8_t type
, uint8_t port
);
80 int pcie_endpoint_cap_init(PCIDevice
*dev
, uint8_t offset
);
81 void pcie_cap_exit(PCIDevice
*dev
);
82 uint8_t pcie_cap_get_type(const PCIDevice
*dev
);
83 void pcie_cap_flags_set_vector(PCIDevice
*dev
, uint8_t vector
);
84 uint8_t pcie_cap_flags_get_vector(PCIDevice
*dev
);
86 void pcie_cap_deverr_init(PCIDevice
*dev
);
87 void pcie_cap_deverr_reset(PCIDevice
*dev
);
89 void pcie_cap_slot_init(PCIDevice
*dev
, uint16_t slot
);
90 void pcie_cap_slot_reset(PCIDevice
*dev
);
91 void pcie_cap_slot_write_config(PCIDevice
*dev
,
92 uint32_t addr
, uint32_t val
, int len
);
93 int pcie_cap_slot_post_load(void *opaque
, int version_id
);
94 void pcie_cap_slot_push_attention_button(PCIDevice
*dev
);
96 void pcie_cap_root_init(PCIDevice
*dev
);
97 void pcie_cap_root_reset(PCIDevice
*dev
);
99 void pcie_cap_flr_init(PCIDevice
*dev
);
100 void pcie_cap_flr_write_config(PCIDevice
*dev
,
101 uint32_t addr
, uint32_t val
, int len
);
103 void pcie_cap_ari_init(PCIDevice
*dev
);
104 void pcie_cap_ari_reset(PCIDevice
*dev
);
105 bool pcie_cap_is_ari_enabled(const PCIDevice
*dev
);
107 /* PCI express extended capability helper functions */
108 uint16_t pcie_find_capability(PCIDevice
*dev
, uint16_t cap_id
);
109 void pcie_add_capability(PCIDevice
*dev
,
110 uint16_t cap_id
, uint8_t cap_ver
,
111 uint16_t offset
, uint16_t size
);
113 void pcie_ari_init(PCIDevice
*dev
, uint16_t offset
, uint16_t nextfn
);
115 extern const VMStateDescription vmstate_pcie_device
;
117 #define VMSTATE_PCIE_DEVICE(_field, _state) { \
118 .name = (stringify(_field)), \
119 .size = sizeof(PCIDevice), \
120 .vmsd = &vmstate_pcie_device, \
121 .flags = VMS_STRUCT, \
122 .offset = vmstate_offset_value(_state, _field, PCIDevice), \
125 #endif /* QEMU_PCIE_H */