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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2/*
3 * PCI standard defines
4 * Copyright 1994, Drew Eckhardt
5 * Copyright 1997--1999 Martin Mares <mj@ucw.cz>
6 *
7 * For more information, please consult the following manuals (look at
8 * http://www.pcisig.com/ for how to get them):
9 *
10 * PCI BIOS Specification
11 * PCI Local Bus Specification
12 * PCI to PCI Bridge Specification
13 * PCI System Design Guide
14 *
15 * For HyperTransport information, please consult the following manuals
16 * from http://www.hypertransport.org :
17 *
18 * The HyperTransport I/O Link Specification
19 */
20
21#ifndef LINUX_PCI_REGS_H
22#define LINUX_PCI_REGS_H
23
24/*
25 * Conventional PCI and PCI-X Mode 1 devices have 256 bytes of
26 * configuration space. PCI-X Mode 2 and PCIe devices have 4096 bytes of
27 * configuration space.
28 */
29#define PCI_CFG_SPACE_SIZE 256
30#define PCI_CFG_SPACE_EXP_SIZE 4096
31
32/*
33 * Under PCI, each device has 256 bytes of configuration address space,
34 * of which the first 64 bytes are standardized as follows:
35 */
36#define PCI_STD_HEADER_SIZEOF 64
37#define PCI_STD_NUM_BARS 6 /* Number of standard BARs */
38#define PCI_VENDOR_ID 0x00 /* 16 bits */
39#define PCI_DEVICE_ID 0x02 /* 16 bits */
40#define PCI_COMMAND 0x04 /* 16 bits */
41#define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */
42#define PCI_COMMAND_MEMORY 0x2 /* Enable response in Memory space */
43#define PCI_COMMAND_MASTER 0x4 /* Enable bus mastering */
44#define PCI_COMMAND_SPECIAL 0x8 /* Enable response to special cycles */
45#define PCI_COMMAND_INVALIDATE 0x10 /* Use memory write and invalidate */
46#define PCI_COMMAND_VGA_PALETTE 0x20 /* Enable palette snooping */
47#define PCI_COMMAND_PARITY 0x40 /* Enable parity checking */
48#define PCI_COMMAND_WAIT 0x80 /* Enable address/data stepping */
49#define PCI_COMMAND_SERR 0x100 /* Enable SERR */
50#define PCI_COMMAND_FAST_BACK 0x200 /* Enable back-to-back writes */
51#define PCI_COMMAND_INTX_DISABLE 0x400 /* INTx Emulation Disable */
52
53#define PCI_STATUS 0x06 /* 16 bits */
54#define PCI_STATUS_IMM_READY 0x01 /* Immediate Readiness */
55#define PCI_STATUS_INTERRUPT 0x08 /* Interrupt status */
56#define PCI_STATUS_CAP_LIST 0x10 /* Support Capability List */
57#define PCI_STATUS_66MHZ 0x20 /* Support 66 MHz PCI 2.1 bus */
58#define PCI_STATUS_UDF 0x40 /* Support User Definable Features [obsolete] */
59#define PCI_STATUS_FAST_BACK 0x80 /* Accept fast-back to back */
60#define PCI_STATUS_PARITY 0x100 /* Detected parity error */
61#define PCI_STATUS_DEVSEL_MASK 0x600 /* DEVSEL timing */
62#define PCI_STATUS_DEVSEL_FAST 0x000
63#define PCI_STATUS_DEVSEL_MEDIUM 0x200
64#define PCI_STATUS_DEVSEL_SLOW 0x400
65#define PCI_STATUS_SIG_TARGET_ABORT 0x800 /* Set on target abort */
66#define PCI_STATUS_REC_TARGET_ABORT 0x1000 /* Master ack of " */
67#define PCI_STATUS_REC_MASTER_ABORT 0x2000 /* Set on master abort */
68#define PCI_STATUS_SIG_SYSTEM_ERROR 0x4000 /* Set when we drive SERR */
69#define PCI_STATUS_DETECTED_PARITY 0x8000 /* Set on parity error */
70
71#define PCI_CLASS_REVISION 0x08 /* High 24 bits are class, low 8 revision */
72#define PCI_REVISION_ID 0x08 /* Revision ID */
73#define PCI_CLASS_PROG 0x09 /* Reg. Level Programming Interface */
74#define PCI_CLASS_DEVICE 0x0a /* Device class */
75
76#define PCI_CACHE_LINE_SIZE 0x0c /* 8 bits */
77#define PCI_LATENCY_TIMER 0x0d /* 8 bits */
78#define PCI_HEADER_TYPE 0x0e /* 8 bits */
79#define PCI_HEADER_TYPE_MASK 0x7f
80#define PCI_HEADER_TYPE_NORMAL 0
81#define PCI_HEADER_TYPE_BRIDGE 1
82#define PCI_HEADER_TYPE_CARDBUS 2
83#define PCI_HEADER_TYPE_MFD 0x80 /* Multi-Function Device (possible) */
84
85#define PCI_BIST 0x0f /* 8 bits */
86#define PCI_BIST_CODE_MASK 0x0f /* Return result */
87#define PCI_BIST_START 0x40 /* 1 to start BIST, 2 secs or less */
88#define PCI_BIST_CAPABLE 0x80 /* 1 if BIST capable */
89
90/*
91 * Base addresses specify locations in memory or I/O space.
92 * Decoded size can be determined by writing a value of
93 * 0xffffffff to the register, and reading it back. Only
94 * 1 bits are decoded.
95 */
96#define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */
97#define PCI_BASE_ADDRESS_1 0x14 /* 32 bits [htype 0,1 only] */
98#define PCI_BASE_ADDRESS_2 0x18 /* 32 bits [htype 0 only] */
99#define PCI_BASE_ADDRESS_3 0x1c /* 32 bits */
100#define PCI_BASE_ADDRESS_4 0x20 /* 32 bits */
101#define PCI_BASE_ADDRESS_5 0x24 /* 32 bits */
102#define PCI_BASE_ADDRESS_SPACE 0x01 /* 0 = memory, 1 = I/O */
103#define PCI_BASE_ADDRESS_SPACE_IO 0x01
104#define PCI_BASE_ADDRESS_SPACE_MEMORY 0x00
105#define PCI_BASE_ADDRESS_MEM_TYPE_MASK 0x06
106#define PCI_BASE_ADDRESS_MEM_TYPE_32 0x00 /* 32 bit address */
107#define PCI_BASE_ADDRESS_MEM_TYPE_1M 0x02 /* Below 1M [obsolete] */
108#define PCI_BASE_ADDRESS_MEM_TYPE_64 0x04 /* 64 bit address */
109#define PCI_BASE_ADDRESS_MEM_PREFETCH 0x08 /* prefetchable? */
110#define PCI_BASE_ADDRESS_MEM_MASK (~0x0fUL)
111#define PCI_BASE_ADDRESS_IO_MASK (~0x03UL)
112/* bit 1 is reserved if address_space = 1 */
113
114/* Header type 0 (normal devices) */
115#define PCI_CARDBUS_CIS 0x28
116#define PCI_SUBSYSTEM_VENDOR_ID 0x2c
117#define PCI_SUBSYSTEM_ID 0x2e
118#define PCI_ROM_ADDRESS 0x30 /* Bits 31..11 are address, 10..1 reserved */
119#define PCI_ROM_ADDRESS_ENABLE 0x01
120#define PCI_ROM_ADDRESS_MASK (~0x7ffU)
121
122#define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */
123
124/* 0x35-0x3b are reserved */
125#define PCI_INTERRUPT_LINE 0x3c /* 8 bits */
126#define PCI_INTERRUPT_PIN 0x3d /* 8 bits */
127#define PCI_MIN_GNT 0x3e /* 8 bits */
128#define PCI_MAX_LAT 0x3f /* 8 bits */
129
130/* Header type 1 (PCI-to-PCI bridges) */
131#define PCI_PRIMARY_BUS 0x18 /* Primary bus number */
132#define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */
133#define PCI_SUBORDINATE_BUS 0x1a /* Highest bus number behind the bridge */
134#define PCI_SEC_LATENCY_TIMER 0x1b /* Latency timer for secondary interface */
135#define PCI_IO_BASE 0x1c /* I/O range behind the bridge */
136#define PCI_IO_LIMIT 0x1d
137#define PCI_IO_RANGE_TYPE_MASK 0x0fUL /* I/O bridging type */
138#define PCI_IO_RANGE_TYPE_16 0x00
139#define PCI_IO_RANGE_TYPE_32 0x01
140#define PCI_IO_RANGE_MASK (~0x0fUL) /* Standard 4K I/O windows */
141#define PCI_IO_1K_RANGE_MASK (~0x03UL) /* Intel 1K I/O windows */
142#define PCI_SEC_STATUS 0x1e /* Secondary status register, only bit 14 used */
143#define PCI_MEMORY_BASE 0x20 /* Memory range behind */
144#define PCI_MEMORY_LIMIT 0x22
145#define PCI_MEMORY_RANGE_TYPE_MASK 0x0fUL
146#define PCI_MEMORY_RANGE_MASK (~0x0fUL)
147#define PCI_PREF_MEMORY_BASE 0x24 /* Prefetchable memory range behind */
148#define PCI_PREF_MEMORY_LIMIT 0x26
149#define PCI_PREF_RANGE_TYPE_MASK 0x0fUL
150#define PCI_PREF_RANGE_TYPE_32 0x00
151#define PCI_PREF_RANGE_TYPE_64 0x01
152#define PCI_PREF_RANGE_MASK (~0x0fUL)
153#define PCI_PREF_BASE_UPPER32 0x28 /* Upper half of prefetchable memory range */
154#define PCI_PREF_LIMIT_UPPER32 0x2c
155#define PCI_IO_BASE_UPPER16 0x30 /* Upper half of I/O addresses */
156#define PCI_IO_LIMIT_UPPER16 0x32
157/* 0x34 same as for htype 0 */
158/* 0x35-0x3b is reserved */
159#define PCI_ROM_ADDRESS1 0x38 /* Same as PCI_ROM_ADDRESS, but for htype 1 */
160/* 0x3c-0x3d are same as for htype 0 */
161#define PCI_BRIDGE_CONTROL 0x3e
162#define PCI_BRIDGE_CTL_PARITY 0x01 /* Enable parity detection on secondary interface */
163#define PCI_BRIDGE_CTL_SERR 0x02 /* The same for SERR forwarding */
164#define PCI_BRIDGE_CTL_ISA 0x04 /* Enable ISA mode */
165#define PCI_BRIDGE_CTL_VGA 0x08 /* Forward VGA addresses */
166#define PCI_BRIDGE_CTL_MASTER_ABORT 0x20 /* Report master aborts */
167#define PCI_BRIDGE_CTL_BUS_RESET 0x40 /* Secondary bus reset */
168#define PCI_BRIDGE_CTL_FAST_BACK 0x80 /* Fast Back2Back enabled on secondary interface */
169
170/* Header type 2 (CardBus bridges) */
171#define PCI_CB_CAPABILITY_LIST 0x14
172/* 0x15 reserved */
173#define PCI_CB_SEC_STATUS 0x16 /* Secondary status */
174#define PCI_CB_PRIMARY_BUS 0x18 /* PCI bus number */
175#define PCI_CB_CARD_BUS 0x19 /* CardBus bus number */
176#define PCI_CB_SUBORDINATE_BUS 0x1a /* Subordinate bus number */
177#define PCI_CB_LATENCY_TIMER 0x1b /* CardBus latency timer */
178#define PCI_CB_MEMORY_BASE_0 0x1c
179#define PCI_CB_MEMORY_LIMIT_0 0x20
180#define PCI_CB_MEMORY_BASE_1 0x24
181#define PCI_CB_MEMORY_LIMIT_1 0x28
182#define PCI_CB_IO_BASE_0 0x2c
183#define PCI_CB_IO_BASE_0_HI 0x2e
184#define PCI_CB_IO_LIMIT_0 0x30
185#define PCI_CB_IO_LIMIT_0_HI 0x32
186#define PCI_CB_IO_BASE_1 0x34
187#define PCI_CB_IO_BASE_1_HI 0x36
188#define PCI_CB_IO_LIMIT_1 0x38
189#define PCI_CB_IO_LIMIT_1_HI 0x3a
190#define PCI_CB_IO_RANGE_MASK (~0x03UL)
191/* 0x3c-0x3d are same as for htype 0 */
192#define PCI_CB_BRIDGE_CONTROL 0x3e
193#define PCI_CB_BRIDGE_CTL_PARITY 0x01 /* Similar to standard bridge control register */
194#define PCI_CB_BRIDGE_CTL_SERR 0x02
195#define PCI_CB_BRIDGE_CTL_ISA 0x04
196#define PCI_CB_BRIDGE_CTL_VGA 0x08
197#define PCI_CB_BRIDGE_CTL_MASTER_ABORT 0x20
198#define PCI_CB_BRIDGE_CTL_CB_RESET 0x40 /* CardBus reset */
199#define PCI_CB_BRIDGE_CTL_16BIT_INT 0x80 /* Enable interrupt for 16-bit cards */
200#define PCI_CB_BRIDGE_CTL_PREFETCH_MEM0 0x100 /* Prefetch enable for both memory regions */
201#define PCI_CB_BRIDGE_CTL_PREFETCH_MEM1 0x200
202#define PCI_CB_BRIDGE_CTL_POST_WRITES 0x400
203#define PCI_CB_SUBSYSTEM_VENDOR_ID 0x40
204#define PCI_CB_SUBSYSTEM_ID 0x42
205#define PCI_CB_LEGACY_MODE_BASE 0x44 /* 16-bit PC Card legacy mode base address (ExCa) */
206/* 0x48-0x7f reserved */
207
208/* Capability lists */
209
210#define PCI_CAP_LIST_ID 0 /* Capability ID */
211#define PCI_CAP_ID_PM 0x01 /* Power Management */
212#define PCI_CAP_ID_AGP 0x02 /* Accelerated Graphics Port */
213#define PCI_CAP_ID_VPD 0x03 /* Vital Product Data */
214#define PCI_CAP_ID_SLOTID 0x04 /* Slot Identification */
215#define PCI_CAP_ID_MSI 0x05 /* Message Signalled Interrupts */
216#define PCI_CAP_ID_CHSWP 0x06 /* CompactPCI HotSwap */
217#define PCI_CAP_ID_PCIX 0x07 /* PCI-X */
218#define PCI_CAP_ID_HT 0x08 /* HyperTransport */
219#define PCI_CAP_ID_VNDR 0x09 /* Vendor-Specific */
220#define PCI_CAP_ID_DBG 0x0A /* Debug port */
221#define PCI_CAP_ID_CCRC 0x0B /* CompactPCI Central Resource Control */
222#define PCI_CAP_ID_SHPC 0x0C /* PCI Standard Hot-Plug Controller */
223#define PCI_CAP_ID_SSVID 0x0D /* Bridge subsystem vendor/device ID */
224#define PCI_CAP_ID_AGP3 0x0E /* AGP Target PCI-PCI bridge */
225#define PCI_CAP_ID_SECDEV 0x0F /* Secure Device */
226#define PCI_CAP_ID_EXP 0x10 /* PCI Express */
227#define PCI_CAP_ID_MSIX 0x11 /* MSI-X */
228#define PCI_CAP_ID_SATA 0x12 /* SATA Data/Index Conf. */
229#define PCI_CAP_ID_AF 0x13 /* PCI Advanced Features */
230#define PCI_CAP_ID_EA 0x14 /* PCI Enhanced Allocation */
231#define PCI_CAP_ID_MAX PCI_CAP_ID_EA
232#define PCI_CAP_LIST_NEXT 1 /* Next capability in the list */
233#define PCI_CAP_FLAGS 2 /* Capability defined flags (16 bits) */
234#define PCI_CAP_SIZEOF 4
235
236/* Power Management Registers */
237
238#define PCI_PM_PMC 2 /* PM Capabilities Register */
239#define PCI_PM_CAP_VER_MASK 0x0007 /* Version */
240#define PCI_PM_CAP_PME_CLOCK 0x0008 /* PME clock required */
241#define PCI_PM_CAP_RESERVED 0x0010 /* Reserved field */
242#define PCI_PM_CAP_DSI 0x0020 /* Device specific initialization */
243#define PCI_PM_CAP_AUX_POWER 0x01C0 /* Auxiliary power support mask */
244#define PCI_PM_CAP_D1 0x0200 /* D1 power state support */
245#define PCI_PM_CAP_D2 0x0400 /* D2 power state support */
246#define PCI_PM_CAP_PME 0x0800 /* PME pin supported */
247#define PCI_PM_CAP_PME_MASK 0xF800 /* PME Mask of all supported states */
248#define PCI_PM_CAP_PME_D0 0x0800 /* PME# from D0 */
249#define PCI_PM_CAP_PME_D1 0x1000 /* PME# from D1 */
250#define PCI_PM_CAP_PME_D2 0x2000 /* PME# from D2 */
251#define PCI_PM_CAP_PME_D3hot 0x4000 /* PME# from D3 (hot) */
252#define PCI_PM_CAP_PME_D3cold 0x8000 /* PME# from D3 (cold) */
253#define PCI_PM_CAP_PME_SHIFT 11 /* Start of the PME Mask in PMC */
254#define PCI_PM_CTRL 4 /* PM control and status register */
255#define PCI_PM_CTRL_STATE_MASK 0x0003 /* Current power state (D0 to D3) */
256#define PCI_PM_CTRL_NO_SOFT_RESET 0x0008 /* No reset for D3hot->D0 */
257#define PCI_PM_CTRL_PME_ENABLE 0x0100 /* PME pin enable */
258#define PCI_PM_CTRL_DATA_SEL_MASK 0x1e00 /* Data select (??) */
259#define PCI_PM_CTRL_DATA_SCALE_MASK 0x6000 /* Data scale (??) */
260#define PCI_PM_CTRL_PME_STATUS 0x8000 /* PME pin status */
261#define PCI_PM_PPB_EXTENSIONS 6 /* PPB support extensions (??) */
262#define PCI_PM_PPB_B2_B3 0x40 /* Stop clock when in D3hot (??) */
263#define PCI_PM_BPCC_ENABLE 0x80 /* Bus power/clock control enable (??) */
264#define PCI_PM_DATA_REGISTER 7 /* (??) */
265#define PCI_PM_SIZEOF 8
266
267/* AGP registers */
268
269#define PCI_AGP_VERSION 2 /* BCD version number */
270#define PCI_AGP_RFU 3 /* Rest of capability flags */
271#define PCI_AGP_STATUS 4 /* Status register */
272#define PCI_AGP_STATUS_RQ_MASK 0xff000000 /* Maximum number of requests - 1 */
273#define PCI_AGP_STATUS_SBA 0x0200 /* Sideband addressing supported */
274#define PCI_AGP_STATUS_64BIT 0x0020 /* 64-bit addressing supported */
275#define PCI_AGP_STATUS_FW 0x0010 /* FW transfers supported */
276#define PCI_AGP_STATUS_RATE4 0x0004 /* 4x transfer rate supported */
277#define PCI_AGP_STATUS_RATE2 0x0002 /* 2x transfer rate supported */
278#define PCI_AGP_STATUS_RATE1 0x0001 /* 1x transfer rate supported */
279#define PCI_AGP_COMMAND 8 /* Control register */
280#define PCI_AGP_COMMAND_RQ_MASK 0xff000000 /* Master: Maximum number of requests */
281#define PCI_AGP_COMMAND_SBA 0x0200 /* Sideband addressing enabled */
282#define PCI_AGP_COMMAND_AGP 0x0100 /* Allow processing of AGP transactions */
283#define PCI_AGP_COMMAND_64BIT 0x0020 /* Allow processing of 64-bit addresses */
284#define PCI_AGP_COMMAND_FW 0x0010 /* Force FW transfers */
285#define PCI_AGP_COMMAND_RATE4 0x0004 /* Use 4x rate */
286#define PCI_AGP_COMMAND_RATE2 0x0002 /* Use 2x rate */
287#define PCI_AGP_COMMAND_RATE1 0x0001 /* Use 1x rate */
288#define PCI_AGP_SIZEOF 12
289
290/* Vital Product Data */
291
292#define PCI_VPD_ADDR 2 /* Address to access (15 bits!) */
293#define PCI_VPD_ADDR_MASK 0x7fff /* Address mask */
294#define PCI_VPD_ADDR_F 0x8000 /* Write 0, 1 indicates completion */
295#define PCI_VPD_DATA 4 /* 32-bits of data returned here */
296#define PCI_CAP_VPD_SIZEOF 8
297
298/* Slot Identification */
299
300#define PCI_SID_ESR 2 /* Expansion Slot Register */
301#define PCI_SID_ESR_NSLOTS 0x1f /* Number of expansion slots available */
302#define PCI_SID_ESR_FIC 0x20 /* First In Chassis Flag */
303#define PCI_SID_CHASSIS_NR 3 /* Chassis Number */
304
305/* Message Signaled Interrupt registers */
306
307#define PCI_MSI_FLAGS 0x02 /* Message Control */
308#define PCI_MSI_FLAGS_ENABLE 0x0001 /* MSI feature enabled */
309#define PCI_MSI_FLAGS_QMASK 0x000e /* Maximum queue size available */
310#define PCI_MSI_FLAGS_QSIZE 0x0070 /* Message queue size configured */
311#define PCI_MSI_FLAGS_64BIT 0x0080 /* 64-bit addresses allowed */
312#define PCI_MSI_FLAGS_MASKBIT 0x0100 /* Per-vector masking capable */
313#define PCI_MSI_RFU 3 /* Rest of capability flags */
314#define PCI_MSI_ADDRESS_LO 0x04 /* Lower 32 bits */
315#define PCI_MSI_ADDRESS_HI 0x08 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */
316#define PCI_MSI_DATA_32 0x08 /* 16 bits of data for 32-bit devices */
317#define PCI_MSI_MASK_32 0x0c /* Mask bits register for 32-bit devices */
318#define PCI_MSI_PENDING_32 0x10 /* Pending intrs for 32-bit devices */
319#define PCI_MSI_DATA_64 0x0c /* 16 bits of data for 64-bit devices */
320#define PCI_MSI_MASK_64 0x10 /* Mask bits register for 64-bit devices */
321#define PCI_MSI_PENDING_64 0x14 /* Pending intrs for 64-bit devices */
322
323/* MSI-X registers (in MSI-X capability) */
324#define PCI_MSIX_FLAGS 2 /* Message Control */
325#define PCI_MSIX_FLAGS_QSIZE 0x07FF /* Table size */
326#define PCI_MSIX_FLAGS_MASKALL 0x4000 /* Mask all vectors for this function */
327#define PCI_MSIX_FLAGS_ENABLE 0x8000 /* MSI-X enable */
328#define PCI_MSIX_TABLE 4 /* Table offset */
329#define PCI_MSIX_TABLE_BIR 0x00000007 /* BAR index */
330#define PCI_MSIX_TABLE_OFFSET 0xfffffff8 /* Offset into specified BAR */
331#define PCI_MSIX_PBA 8 /* Pending Bit Array offset */
332#define PCI_MSIX_PBA_BIR 0x00000007 /* BAR index */
333#define PCI_MSIX_PBA_OFFSET 0xfffffff8 /* Offset into specified BAR */
334#define PCI_MSIX_FLAGS_BIRMASK PCI_MSIX_PBA_BIR /* deprecated */
335#define PCI_CAP_MSIX_SIZEOF 12 /* size of MSIX registers */
336
337/* MSI-X Table entry format (in memory mapped by a BAR) */
338#define PCI_MSIX_ENTRY_SIZE 16
339#define PCI_MSIX_ENTRY_LOWER_ADDR 0x0 /* Message Address */
340#define PCI_MSIX_ENTRY_UPPER_ADDR 0x4 /* Message Upper Address */
341#define PCI_MSIX_ENTRY_DATA 0x8 /* Message Data */
342#define PCI_MSIX_ENTRY_VECTOR_CTRL 0xc /* Vector Control */
343#define PCI_MSIX_ENTRY_CTRL_MASKBIT 0x00000001 /* Mask Bit */
344#define PCI_MSIX_ENTRY_CTRL_ST 0xffff0000 /* Steering Tag */
345
346/* CompactPCI Hotswap Register */
347
348#define PCI_CHSWP_CSR 2 /* Control and Status Register */
349#define PCI_CHSWP_DHA 0x01 /* Device Hiding Arm */
350#define PCI_CHSWP_EIM 0x02 /* ENUM# Signal Mask */
351#define PCI_CHSWP_PIE 0x04 /* Pending Insert or Extract */
352#define PCI_CHSWP_LOO 0x08 /* LED On / Off */
353#define PCI_CHSWP_PI 0x30 /* Programming Interface */
354#define PCI_CHSWP_EXT 0x40 /* ENUM# status - extraction */
355#define PCI_CHSWP_INS 0x80 /* ENUM# status - insertion */
356
357/* PCI Advanced Feature registers */
358
359#define PCI_AF_LENGTH 2
360#define PCI_AF_CAP 3
361#define PCI_AF_CAP_TP 0x01
362#define PCI_AF_CAP_FLR 0x02
363#define PCI_AF_CTRL 4
364#define PCI_AF_CTRL_FLR 0x01
365#define PCI_AF_STATUS 5
366#define PCI_AF_STATUS_TP 0x01
367#define PCI_CAP_AF_SIZEOF 6 /* size of AF registers */
368
369/* PCI Enhanced Allocation registers */
370
371#define PCI_EA_NUM_ENT 2 /* Number of Capability Entries */
372#define PCI_EA_NUM_ENT_MASK 0x3f /* Num Entries Mask */
373#define PCI_EA_FIRST_ENT 4 /* First EA Entry in List */
374#define PCI_EA_FIRST_ENT_BRIDGE 8 /* First EA Entry for Bridges */
375#define PCI_EA_ES 0x00000007 /* Entry Size */
376#define PCI_EA_BEI 0x000000f0 /* BAR Equivalent Indicator */
377
378/* EA fixed Secondary and Subordinate bus numbers for Bridge */
379#define PCI_EA_SEC_BUS_MASK 0xff
380#define PCI_EA_SUB_BUS_MASK 0xff00
381#define PCI_EA_SUB_BUS_SHIFT 8
382
383/* 0-5 map to BARs 0-5 respectively */
384#define PCI_EA_BEI_BAR0 0
385#define PCI_EA_BEI_BAR5 5
386#define PCI_EA_BEI_BRIDGE 6 /* Resource behind bridge */
387#define PCI_EA_BEI_ENI 7 /* Equivalent Not Indicated */
388#define PCI_EA_BEI_ROM 8 /* Expansion ROM */
389/* 9-14 map to VF BARs 0-5 respectively */
390#define PCI_EA_BEI_VF_BAR0 9
391#define PCI_EA_BEI_VF_BAR5 14
392#define PCI_EA_BEI_RESERVED 15 /* Reserved - Treat like ENI */
393#define PCI_EA_PP 0x0000ff00 /* Primary Properties */
394#define PCI_EA_SP 0x00ff0000 /* Secondary Properties */
395#define PCI_EA_P_MEM 0x00 /* Non-Prefetch Memory */
396#define PCI_EA_P_MEM_PREFETCH 0x01 /* Prefetchable Memory */
397#define PCI_EA_P_IO 0x02 /* I/O Space */
398#define PCI_EA_P_VF_MEM_PREFETCH 0x03 /* VF Prefetchable Memory */
399#define PCI_EA_P_VF_MEM 0x04 /* VF Non-Prefetch Memory */
400#define PCI_EA_P_BRIDGE_MEM 0x05 /* Bridge Non-Prefetch Memory */
401#define PCI_EA_P_BRIDGE_MEM_PREFETCH 0x06 /* Bridge Prefetchable Memory */
402#define PCI_EA_P_BRIDGE_IO 0x07 /* Bridge I/O Space */
403/* 0x08-0xfc reserved */
404#define PCI_EA_P_MEM_RESERVED 0xfd /* Reserved Memory */
405#define PCI_EA_P_IO_RESERVED 0xfe /* Reserved I/O Space */
406#define PCI_EA_P_UNAVAILABLE 0xff /* Entry Unavailable */
407#define PCI_EA_WRITABLE 0x40000000 /* Writable: 1 = RW, 0 = HwInit */
408#define PCI_EA_ENABLE 0x80000000 /* Enable for this entry */
409#define PCI_EA_BASE 4 /* Base Address Offset */
410#define PCI_EA_MAX_OFFSET 8 /* MaxOffset (resource length) */
411/* bit 0 is reserved */
412#define PCI_EA_IS_64 0x00000002 /* 64-bit field flag */
413#define PCI_EA_FIELD_MASK 0xfffffffc /* For Base & Max Offset */
414
415/* PCI-X registers (Type 0 (non-bridge) devices) */
416
417#define PCI_X_CMD 2 /* Modes & Features */
418#define PCI_X_CMD_DPERR_E 0x0001 /* Data Parity Error Recovery Enable */
419#define PCI_X_CMD_ERO 0x0002 /* Enable Relaxed Ordering */
420#define PCI_X_CMD_READ_512 0x0000 /* 512 byte maximum read byte count */
421#define PCI_X_CMD_READ_1K 0x0004 /* 1Kbyte maximum read byte count */
422#define PCI_X_CMD_READ_2K 0x0008 /* 2Kbyte maximum read byte count */
423#define PCI_X_CMD_READ_4K 0x000c /* 4Kbyte maximum read byte count */
424#define PCI_X_CMD_MAX_READ 0x000c /* Max Memory Read Byte Count */
425 /* Max # of outstanding split transactions */
426#define PCI_X_CMD_SPLIT_1 0x0000 /* Max 1 */
427#define PCI_X_CMD_SPLIT_2 0x0010 /* Max 2 */
428#define PCI_X_CMD_SPLIT_3 0x0020 /* Max 3 */
429#define PCI_X_CMD_SPLIT_4 0x0030 /* Max 4 */
430#define PCI_X_CMD_SPLIT_8 0x0040 /* Max 8 */
431#define PCI_X_CMD_SPLIT_12 0x0050 /* Max 12 */
432#define PCI_X_CMD_SPLIT_16 0x0060 /* Max 16 */
433#define PCI_X_CMD_SPLIT_32 0x0070 /* Max 32 */
434#define PCI_X_CMD_MAX_SPLIT 0x0070 /* Max Outstanding Split Transactions */
435#define PCI_X_CMD_VERSION(x) (((x) >> 12) & 3) /* Version */
436#define PCI_X_STATUS 4 /* PCI-X capabilities */
437#define PCI_X_STATUS_DEVFN 0x000000ff /* A copy of devfn */
438#define PCI_X_STATUS_BUS 0x0000ff00 /* A copy of bus nr */
439#define PCI_X_STATUS_64BIT 0x00010000 /* 64-bit device */
440#define PCI_X_STATUS_133MHZ 0x00020000 /* 133 MHz capable */
441#define PCI_X_STATUS_SPL_DISC 0x00040000 /* Split Completion Discarded */
442#define PCI_X_STATUS_UNX_SPL 0x00080000 /* Unexpected Split Completion */
443#define PCI_X_STATUS_COMPLEX 0x00100000 /* Device Complexity */
444#define PCI_X_STATUS_MAX_READ 0x00600000 /* Designed Max Memory Read Count */
445#define PCI_X_STATUS_MAX_SPLIT 0x03800000 /* Designed Max Outstanding Split Transactions */
446#define PCI_X_STATUS_MAX_CUM 0x1c000000 /* Designed Max Cumulative Read Size */
447#define PCI_X_STATUS_SPL_ERR 0x20000000 /* Rcvd Split Completion Error Msg */
448#define PCI_X_STATUS_266MHZ 0x40000000 /* 266 MHz capable */
449#define PCI_X_STATUS_533MHZ 0x80000000 /* 533 MHz capable */
450#define PCI_X_ECC_CSR 8 /* ECC control and status */
451#define PCI_CAP_PCIX_SIZEOF_V0 8 /* size of registers for Version 0 */
452#define PCI_CAP_PCIX_SIZEOF_V1 24 /* size for Version 1 */
453#define PCI_CAP_PCIX_SIZEOF_V2 PCI_CAP_PCIX_SIZEOF_V1 /* Same for v2 */
454
455/* PCI-X registers (Type 1 (bridge) devices) */
456
457#define PCI_X_BRIDGE_SSTATUS 2 /* Secondary Status */
458#define PCI_X_SSTATUS_64BIT 0x0001 /* Secondary AD interface is 64 bits */
459#define PCI_X_SSTATUS_133MHZ 0x0002 /* 133 MHz capable */
460#define PCI_X_SSTATUS_FREQ 0x03c0 /* Secondary Bus Mode and Frequency */
461#define PCI_X_SSTATUS_VERS 0x3000 /* PCI-X Capability Version */
462#define PCI_X_SSTATUS_V1 0x1000 /* Mode 2, not Mode 1 */
463#define PCI_X_SSTATUS_V2 0x2000 /* Mode 1 or Modes 1 and 2 */
464#define PCI_X_SSTATUS_266MHZ 0x4000 /* 266 MHz capable */
465#define PCI_X_SSTATUS_533MHZ 0x8000 /* 533 MHz capable */
466#define PCI_X_BRIDGE_STATUS 4 /* Bridge Status */
467
468/* PCI Bridge Subsystem ID registers */
469
470#define PCI_SSVID_VENDOR_ID 4 /* PCI Bridge subsystem vendor ID */
471#define PCI_SSVID_DEVICE_ID 6 /* PCI Bridge subsystem device ID */
472
473/* PCI Express capability registers */
474
475#define PCI_EXP_FLAGS 0x02 /* Capabilities register */
476#define PCI_EXP_FLAGS_VERS 0x000f /* Capability version */
477#define PCI_EXP_FLAGS_TYPE 0x00f0 /* Device/Port type */
478#define PCI_EXP_TYPE_ENDPOINT 0x0 /* Express Endpoint */
479#define PCI_EXP_TYPE_LEG_END 0x1 /* Legacy Endpoint */
480#define PCI_EXP_TYPE_ROOT_PORT 0x4 /* Root Port */
481#define PCI_EXP_TYPE_UPSTREAM 0x5 /* Upstream Port */
482#define PCI_EXP_TYPE_DOWNSTREAM 0x6 /* Downstream Port */
483#define PCI_EXP_TYPE_PCI_BRIDGE 0x7 /* PCIe to PCI/PCI-X Bridge */
484#define PCI_EXP_TYPE_PCIE_BRIDGE 0x8 /* PCI/PCI-X to PCIe Bridge */
485#define PCI_EXP_TYPE_RC_END 0x9 /* Root Complex Integrated Endpoint */
486#define PCI_EXP_TYPE_RC_EC 0xa /* Root Complex Event Collector */
487#define PCI_EXP_FLAGS_SLOT 0x0100 /* Slot implemented */
488#define PCI_EXP_FLAGS_IRQ 0x3e00 /* Interrupt message number */
489#define PCI_EXP_FLAGS_FLIT 0x8000 /* Flit Mode Supported */
490#define PCI_EXP_DEVCAP 0x04 /* Device capabilities */
491#define PCI_EXP_DEVCAP_PAYLOAD 0x00000007 /* Max_Payload_Size */
492#define PCI_EXP_DEVCAP_PHANTOM 0x00000018 /* Phantom functions */
493#define PCI_EXP_DEVCAP_EXT_TAG 0x00000020 /* Extended tags */
494#define PCI_EXP_DEVCAP_L0S 0x000001c0 /* L0s Acceptable Latency */
495#define PCI_EXP_DEVCAP_L1 0x00000e00 /* L1 Acceptable Latency */
496#define PCI_EXP_DEVCAP_ATN_BUT 0x00001000 /* Attention Button Present */
497#define PCI_EXP_DEVCAP_ATN_IND 0x00002000 /* Attention Indicator Present */
498#define PCI_EXP_DEVCAP_PWR_IND 0x00004000 /* Power Indicator Present */
499#define PCI_EXP_DEVCAP_RBER 0x00008000 /* Role-Based Error Reporting */
500#define PCI_EXP_DEVCAP_PWR_VAL 0x03fc0000 /* Slot Power Limit Value */
501#define PCI_EXP_DEVCAP_PWR_SCL 0x0c000000 /* Slot Power Limit Scale */
502#define PCI_EXP_DEVCAP_FLR 0x10000000 /* Function Level Reset */
503#define PCI_EXP_DEVCTL 0x08 /* Device Control */
504#define PCI_EXP_DEVCTL_CERE 0x0001 /* Correctable Error Reporting En. */
505#define PCI_EXP_DEVCTL_NFERE 0x0002 /* Non-Fatal Error Reporting Enable */
506#define PCI_EXP_DEVCTL_FERE 0x0004 /* Fatal Error Reporting Enable */
507#define PCI_EXP_DEVCTL_URRE 0x0008 /* Unsupported Request Reporting En. */
508#define PCI_EXP_DEVCTL_RELAX_EN 0x0010 /* Enable relaxed ordering */
509#define PCI_EXP_DEVCTL_PAYLOAD 0x00e0 /* Max_Payload_Size */
510#define PCI_EXP_DEVCTL_PAYLOAD_128B 0x0000 /* 128 Bytes */
511#define PCI_EXP_DEVCTL_PAYLOAD_256B 0x0020 /* 256 Bytes */
512#define PCI_EXP_DEVCTL_PAYLOAD_512B 0x0040 /* 512 Bytes */
513#define PCI_EXP_DEVCTL_PAYLOAD_1024B 0x0060 /* 1024 Bytes */
514#define PCI_EXP_DEVCTL_PAYLOAD_2048B 0x0080 /* 2048 Bytes */
515#define PCI_EXP_DEVCTL_PAYLOAD_4096B 0x00a0 /* 4096 Bytes */
516#define PCI_EXP_DEVCTL_EXT_TAG 0x0100 /* Extended Tag Field Enable */
517#define PCI_EXP_DEVCTL_PHANTOM 0x0200 /* Phantom Functions Enable */
518#define PCI_EXP_DEVCTL_AUX_PME 0x0400 /* Auxiliary Power PM Enable */
519#define PCI_EXP_DEVCTL_NOSNOOP_EN 0x0800 /* Enable No Snoop */
520#define PCI_EXP_DEVCTL_READRQ 0x7000 /* Max_Read_Request_Size */
521#define PCI_EXP_DEVCTL_READRQ_128B 0x0000 /* 128 Bytes */
522#define PCI_EXP_DEVCTL_READRQ_256B 0x1000 /* 256 Bytes */
523#define PCI_EXP_DEVCTL_READRQ_512B 0x2000 /* 512 Bytes */
524#define PCI_EXP_DEVCTL_READRQ_1024B 0x3000 /* 1024 Bytes */
525#define PCI_EXP_DEVCTL_READRQ_2048B 0x4000 /* 2048 Bytes */
526#define PCI_EXP_DEVCTL_READRQ_4096B 0x5000 /* 4096 Bytes */
527#define PCI_EXP_DEVCTL_BCR_FLR 0x8000 /* Bridge Configuration Retry / FLR */
528#define PCI_EXP_DEVSTA 0x0a /* Device Status */
529#define PCI_EXP_DEVSTA_CED 0x0001 /* Correctable Error Detected */
530#define PCI_EXP_DEVSTA_NFED 0x0002 /* Non-Fatal Error Detected */
531#define PCI_EXP_DEVSTA_FED 0x0004 /* Fatal Error Detected */
532#define PCI_EXP_DEVSTA_URD 0x0008 /* Unsupported Request Detected */
533#define PCI_EXP_DEVSTA_AUXPD 0x0010 /* AUX Power Detected */
534#define PCI_EXP_DEVSTA_TRPND 0x0020 /* Transactions Pending */
535#define PCI_CAP_EXP_RC_ENDPOINT_SIZEOF_V1 12 /* v1 endpoints without link end here */
536#define PCI_EXP_LNKCAP 0x0c /* Link Capabilities */
537#define PCI_EXP_LNKCAP_SLS 0x0000000f /* Max Link Speed (prior to PCIe r3.0: Supported Link Speeds) */
538#define PCI_EXP_LNKCAP_SLS_2_5GB 0x00000001 /* LNKCAP2 SLS Vector bit 0 */
539#define PCI_EXP_LNKCAP_SLS_5_0GB 0x00000002 /* LNKCAP2 SLS Vector bit 1 */
540#define PCI_EXP_LNKCAP_SLS_8_0GB 0x00000003 /* LNKCAP2 SLS Vector bit 2 */
541#define PCI_EXP_LNKCAP_SLS_16_0GB 0x00000004 /* LNKCAP2 SLS Vector bit 3 */
542#define PCI_EXP_LNKCAP_SLS_32_0GB 0x00000005 /* LNKCAP2 SLS Vector bit 4 */
543#define PCI_EXP_LNKCAP_SLS_64_0GB 0x00000006 /* LNKCAP2 SLS Vector bit 5 */
544#define PCI_EXP_LNKCAP_MLW 0x000003f0 /* Maximum Link Width */
545#define PCI_EXP_LNKCAP_ASPMS 0x00000c00 /* ASPM Support */
546#define PCI_EXP_LNKCAP_ASPM_L0S 0x00000400 /* ASPM L0s Support */
547#define PCI_EXP_LNKCAP_ASPM_L1 0x00000800 /* ASPM L1 Support */
548#define PCI_EXP_LNKCAP_L0SEL 0x00007000 /* L0s Exit Latency */
549#define PCI_EXP_LNKCAP_L1EL 0x00038000 /* L1 Exit Latency */
550#define PCI_EXP_LNKCAP_CLKPM 0x00040000 /* Clock Power Management */
551#define PCI_EXP_LNKCAP_SDERC 0x00080000 /* Surprise Down Error Reporting Capable */
552#define PCI_EXP_LNKCAP_DLLLARC 0x00100000 /* Data Link Layer Link Active Reporting Capable */
553#define PCI_EXP_LNKCAP_LBNC 0x00200000 /* Link Bandwidth Notification Capability */
554#define PCI_EXP_LNKCAP_PN 0xff000000 /* Port Number */
555#define PCI_EXP_LNKCTL 0x10 /* Link Control */
556#define PCI_EXP_LNKCTL_ASPMC 0x0003 /* ASPM Control */
557#define PCI_EXP_LNKCTL_ASPM_L0S 0x0001 /* L0s Enable */
558#define PCI_EXP_LNKCTL_ASPM_L1 0x0002 /* L1 Enable */
559#define PCI_EXP_LNKCTL_RCB 0x0008 /* Read Completion Boundary */
560#define PCI_EXP_LNKCTL_LD 0x0010 /* Link Disable */
561#define PCI_EXP_LNKCTL_RL 0x0020 /* Retrain Link */
562#define PCI_EXP_LNKCTL_CCC 0x0040 /* Common Clock Configuration */
563#define PCI_EXP_LNKCTL_ES 0x0080 /* Extended Synch */
564#define PCI_EXP_LNKCTL_CLKREQ_EN 0x0100 /* Enable clkreq */
565#define PCI_EXP_LNKCTL_HAWD 0x0200 /* Hardware Autonomous Width Disable */
566#define PCI_EXP_LNKCTL_LBMIE 0x0400 /* Link Bandwidth Management Interrupt Enable */
567#define PCI_EXP_LNKCTL_LABIE 0x0800 /* Link Autonomous Bandwidth Interrupt Enable */
568#define PCI_EXP_LNKSTA 0x12 /* Link Status */
569#define PCI_EXP_LNKSTA_CLS 0x000f /* Current Link Speed */
570#define PCI_EXP_LNKSTA_CLS_2_5GB 0x0001 /* Current Link Speed 2.5GT/s */
571#define PCI_EXP_LNKSTA_CLS_5_0GB 0x0002 /* Current Link Speed 5.0GT/s */
572#define PCI_EXP_LNKSTA_CLS_8_0GB 0x0003 /* Current Link Speed 8.0GT/s */
573#define PCI_EXP_LNKSTA_CLS_16_0GB 0x0004 /* Current Link Speed 16.0GT/s */
574#define PCI_EXP_LNKSTA_CLS_32_0GB 0x0005 /* Current Link Speed 32.0GT/s */
575#define PCI_EXP_LNKSTA_CLS_64_0GB 0x0006 /* Current Link Speed 64.0GT/s */
576#define PCI_EXP_LNKSTA_NLW 0x03f0 /* Negotiated Link Width */
577#define PCI_EXP_LNKSTA_NLW_X1 0x0010 /* Current Link Width x1 */
578#define PCI_EXP_LNKSTA_NLW_X2 0x0020 /* Current Link Width x2 */
579#define PCI_EXP_LNKSTA_NLW_X4 0x0040 /* Current Link Width x4 */
580#define PCI_EXP_LNKSTA_NLW_X8 0x0080 /* Current Link Width x8 */
581#define PCI_EXP_LNKSTA_NLW_SHIFT 4 /* start of NLW mask in link status */
582#define PCI_EXP_LNKSTA_LT 0x0800 /* Link Training */
583#define PCI_EXP_LNKSTA_SLC 0x1000 /* Slot Clock Configuration */
584#define PCI_EXP_LNKSTA_DLLLA 0x2000 /* Data Link Layer Link Active */
585#define PCI_EXP_LNKSTA_LBMS 0x4000 /* Link Bandwidth Management Status */
586#define PCI_EXP_LNKSTA_LABS 0x8000 /* Link Autonomous Bandwidth Status */
587#define PCI_CAP_EXP_ENDPOINT_SIZEOF_V1 20 /* v1 endpoints with link end here */
588#define PCI_EXP_SLTCAP 0x14 /* Slot Capabilities */
589#define PCI_EXP_SLTCAP_ABP 0x00000001 /* Attention Button Present */
590#define PCI_EXP_SLTCAP_PCP 0x00000002 /* Power Controller Present */
591#define PCI_EXP_SLTCAP_MRLSP 0x00000004 /* MRL Sensor Present */
592#define PCI_EXP_SLTCAP_AIP 0x00000008 /* Attention Indicator Present */
593#define PCI_EXP_SLTCAP_PIP 0x00000010 /* Power Indicator Present */
594#define PCI_EXP_SLTCAP_HPS 0x00000020 /* Hot-Plug Surprise */
595#define PCI_EXP_SLTCAP_HPC 0x00000040 /* Hot-Plug Capable */
596#define PCI_EXP_SLTCAP_SPLV 0x00007f80 /* Slot Power Limit Value */
597#define PCI_EXP_SLTCAP_SPLS 0x00018000 /* Slot Power Limit Scale */
598#define PCI_EXP_SLTCAP_EIP 0x00020000 /* Electromechanical Interlock Present */
599#define PCI_EXP_SLTCAP_NCCS 0x00040000 /* No Command Completed Support */
600#define PCI_EXP_SLTCAP_PSN 0xfff80000 /* Physical Slot Number */
601#define PCI_EXP_SLTCTL 0x18 /* Slot Control */
602#define PCI_EXP_SLTCTL_ABPE 0x0001 /* Attention Button Pressed Enable */
603#define PCI_EXP_SLTCTL_PFDE 0x0002 /* Power Fault Detected Enable */
604#define PCI_EXP_SLTCTL_MRLSCE 0x0004 /* MRL Sensor Changed Enable */
605#define PCI_EXP_SLTCTL_PDCE 0x0008 /* Presence Detect Changed Enable */
606#define PCI_EXP_SLTCTL_CCIE 0x0010 /* Command Completed Interrupt Enable */
607#define PCI_EXP_SLTCTL_HPIE 0x0020 /* Hot-Plug Interrupt Enable */
608#define PCI_EXP_SLTCTL_AIC 0x00c0 /* Attention Indicator Control */
609#define PCI_EXP_SLTCTL_ATTN_IND_SHIFT 6 /* Attention Indicator shift */
610#define PCI_EXP_SLTCTL_ATTN_IND_ON 0x0040 /* Attention Indicator on */
611#define PCI_EXP_SLTCTL_ATTN_IND_BLINK 0x0080 /* Attention Indicator blinking */
612#define PCI_EXP_SLTCTL_ATTN_IND_OFF 0x00c0 /* Attention Indicator off */
613#define PCI_EXP_SLTCTL_PIC 0x0300 /* Power Indicator Control */
614#define PCI_EXP_SLTCTL_PWR_IND_ON 0x0100 /* Power Indicator on */
615#define PCI_EXP_SLTCTL_PWR_IND_BLINK 0x0200 /* Power Indicator blinking */
616#define PCI_EXP_SLTCTL_PWR_IND_OFF 0x0300 /* Power Indicator off */
617#define PCI_EXP_SLTCTL_PCC 0x0400 /* Power Controller Control */
618#define PCI_EXP_SLTCTL_PWR_ON 0x0000 /* Power On */
619#define PCI_EXP_SLTCTL_PWR_OFF 0x0400 /* Power Off */
620#define PCI_EXP_SLTCTL_EIC 0x0800 /* Electromechanical Interlock Control */
621#define PCI_EXP_SLTCTL_DLLSCE 0x1000 /* Data Link Layer State Changed Enable */
622#define PCI_EXP_SLTCTL_ASPL_DISABLE 0x2000 /* Auto Slot Power Limit Disable */
623#define PCI_EXP_SLTCTL_IBPD_DISABLE 0x4000 /* In-band PD disable */
624#define PCI_EXP_SLTSTA 0x1a /* Slot Status */
625#define PCI_EXP_SLTSTA_ABP 0x0001 /* Attention Button Pressed */
626#define PCI_EXP_SLTSTA_PFD 0x0002 /* Power Fault Detected */
627#define PCI_EXP_SLTSTA_MRLSC 0x0004 /* MRL Sensor Changed */
628#define PCI_EXP_SLTSTA_PDC 0x0008 /* Presence Detect Changed */
629#define PCI_EXP_SLTSTA_CC 0x0010 /* Command Completed */
630#define PCI_EXP_SLTSTA_MRLSS 0x0020 /* MRL Sensor State */
631#define PCI_EXP_SLTSTA_PDS 0x0040 /* Presence Detect State */
632#define PCI_EXP_SLTSTA_EIS 0x0080 /* Electromechanical Interlock Status */
633#define PCI_EXP_SLTSTA_DLLSC 0x0100 /* Data Link Layer State Changed */
634#define PCI_EXP_RTCTL 0x1c /* Root Control */
635#define PCI_EXP_RTCTL_SECEE 0x0001 /* System Error on Correctable Error */
636#define PCI_EXP_RTCTL_SENFEE 0x0002 /* System Error on Non-Fatal Error */
637#define PCI_EXP_RTCTL_SEFEE 0x0004 /* System Error on Fatal Error */
638#define PCI_EXP_RTCTL_PMEIE 0x0008 /* PME Interrupt Enable */
639#define PCI_EXP_RTCTL_RRS_SVE 0x0010 /* Config RRS Software Visibility Enable */
640#define PCI_EXP_RTCTL_CRSSVE PCI_EXP_RTCTL_RRS_SVE /* compatibility */
641#define PCI_EXP_RTCAP 0x1e /* Root Capabilities */
642#define PCI_EXP_RTCAP_RRS_SV 0x0001 /* Config RRS Software Visibility */
643#define PCI_EXP_RTCAP_CRSVIS PCI_EXP_RTCAP_RRS_SV /* compatibility */
644#define PCI_EXP_RTSTA 0x20 /* Root Status */
645#define PCI_EXP_RTSTA_PME_RQ_ID 0x0000ffff /* PME Requester ID */
646#define PCI_EXP_RTSTA_PME 0x00010000 /* PME status */
647#define PCI_EXP_RTSTA_PENDING 0x00020000 /* PME pending */
648/*
649 * The Device Capabilities 2, Device Status 2, Device Control 2,
650 * Link Capabilities 2, Link Status 2, Link Control 2,
651 * Slot Capabilities 2, Slot Status 2, and Slot Control 2 registers
652 * are only present on devices with PCIe Capability version 2.
653 * Use pcie_capability_read_word() and similar interfaces to use them
654 * safely.
655 */
656#define PCI_EXP_DEVCAP2 0x24 /* Device Capabilities 2 */
657#define PCI_EXP_DEVCAP2_COMP_TMOUT_DIS 0x00000010 /* Completion Timeout Disable supported */
658#define PCI_EXP_DEVCAP2_ARI 0x00000020 /* Alternative Routing-ID */
659#define PCI_EXP_DEVCAP2_ATOMIC_ROUTE 0x00000040 /* Atomic Op routing */
660#define PCI_EXP_DEVCAP2_ATOMIC_COMP32 0x00000080 /* 32b AtomicOp completion */
661#define PCI_EXP_DEVCAP2_ATOMIC_COMP64 0x00000100 /* 64b AtomicOp completion */
662#define PCI_EXP_DEVCAP2_ATOMIC_COMP128 0x00000200 /* 128b AtomicOp completion */
663#define PCI_EXP_DEVCAP2_LTR 0x00000800 /* Latency tolerance reporting */
664#define PCI_EXP_DEVCAP2_TPH_COMP_MASK 0x00003000 /* TPH completer support */
665#define PCI_EXP_DEVCAP2_OBFF_MASK 0x000c0000 /* OBFF support mechanism */
666#define PCI_EXP_DEVCAP2_OBFF_MSG 0x00040000 /* New message signaling */
667#define PCI_EXP_DEVCAP2_OBFF_WAKE 0x00080000 /* Re-use WAKE# for OBFF */
668#define PCI_EXP_DEVCAP2_EE_PREFIX 0x00200000 /* End-End TLP Prefix */
669#define PCI_EXP_DEVCAP2_EE_PREFIX_MAX 0x00c00000 /* Max End-End TLP Prefixes */
670#define PCI_EXP_DEVCTL2 0x28 /* Device Control 2 */
671#define PCI_EXP_DEVCTL2_COMP_TIMEOUT 0x000f /* Completion Timeout Value */
672#define PCI_EXP_DEVCTL2_COMP_TMOUT_DIS 0x0010 /* Completion Timeout Disable */
673#define PCI_EXP_DEVCTL2_ARI 0x0020 /* Alternative Routing-ID */
674#define PCI_EXP_DEVCTL2_ATOMIC_REQ 0x0040 /* Set Atomic requests */
675#define PCI_EXP_DEVCTL2_ATOMIC_EGRESS_BLOCK 0x0080 /* Block atomic egress */
676#define PCI_EXP_DEVCTL2_IDO_REQ_EN 0x0100 /* Allow IDO for requests */
677#define PCI_EXP_DEVCTL2_IDO_CMP_EN 0x0200 /* Allow IDO for completions */
678#define PCI_EXP_DEVCTL2_LTR_EN 0x0400 /* Enable LTR mechanism */
679#define PCI_EXP_DEVCTL2_OBFF_MSGA_EN 0x2000 /* Enable OBFF Message type A */
680#define PCI_EXP_DEVCTL2_OBFF_MSGB_EN 0x4000 /* Enable OBFF Message type B */
681#define PCI_EXP_DEVCTL2_OBFF_WAKE_EN 0x6000 /* OBFF using WAKE# signaling */
682#define PCI_EXP_DEVSTA2 0x2a /* Device Status 2 */
683#define PCI_CAP_EXP_RC_ENDPOINT_SIZEOF_V2 0x2c /* end of v2 EPs w/o link */
684#define PCI_EXP_LNKCAP2 0x2c /* Link Capabilities 2 */
685#define PCI_EXP_LNKCAP2_SLS 0x000000fe /* Supported Link Speeds Vector */
686#define PCI_EXP_LNKCAP2_SLS_2_5GB 0x00000002 /* Supported Speed 2.5GT/s */
687#define PCI_EXP_LNKCAP2_SLS_5_0GB 0x00000004 /* Supported Speed 5GT/s */
688#define PCI_EXP_LNKCAP2_SLS_8_0GB 0x00000008 /* Supported Speed 8GT/s */
689#define PCI_EXP_LNKCAP2_SLS_16_0GB 0x00000010 /* Supported Speed 16GT/s */
690#define PCI_EXP_LNKCAP2_SLS_32_0GB 0x00000020 /* Supported Speed 32GT/s */
691#define PCI_EXP_LNKCAP2_SLS_64_0GB 0x00000040 /* Supported Speed 64GT/s */
692#define PCI_EXP_LNKCAP2_CROSSLINK 0x00000100 /* Crosslink supported */
693#define PCI_EXP_LNKCTL2 0x30 /* Link Control 2 */
694#define PCI_EXP_LNKCTL2_TLS 0x000f
695#define PCI_EXP_LNKCTL2_TLS_2_5GT 0x0001 /* Supported Speed 2.5GT/s */
696#define PCI_EXP_LNKCTL2_TLS_5_0GT 0x0002 /* Supported Speed 5GT/s */
697#define PCI_EXP_LNKCTL2_TLS_8_0GT 0x0003 /* Supported Speed 8GT/s */
698#define PCI_EXP_LNKCTL2_TLS_16_0GT 0x0004 /* Supported Speed 16GT/s */
699#define PCI_EXP_LNKCTL2_TLS_32_0GT 0x0005 /* Supported Speed 32GT/s */
700#define PCI_EXP_LNKCTL2_TLS_64_0GT 0x0006 /* Supported Speed 64GT/s */
701#define PCI_EXP_LNKCTL2_ENTER_COMP 0x0010 /* Enter Compliance */
702#define PCI_EXP_LNKCTL2_TX_MARGIN 0x0380 /* Transmit Margin */
703#define PCI_EXP_LNKCTL2_HASD 0x0020 /* HW Autonomous Speed Disable */
704#define PCI_EXP_LNKSTA2 0x32 /* Link Status 2 */
705#define PCI_EXP_LNKSTA2_FLIT 0x0400 /* Flit Mode Status */
706#define PCI_CAP_EXP_ENDPOINT_SIZEOF_V2 0x32 /* end of v2 EPs w/ link */
707#define PCI_EXP_SLTCAP2 0x34 /* Slot Capabilities 2 */
708#define PCI_EXP_SLTCAP2_IBPD 0x00000001 /* In-band PD Disable Supported */
709#define PCI_EXP_SLTCTL2 0x38 /* Slot Control 2 */
710#define PCI_EXP_SLTSTA2 0x3a /* Slot Status 2 */
711
712/* Extended Capabilities (PCI-X 2.0 and Express) */
713#define PCI_EXT_CAP_ID(header) (header & 0x0000ffff)
714#define PCI_EXT_CAP_VER(header) ((header >> 16) & 0xf)
715#define PCI_EXT_CAP_NEXT(header) ((header >> 20) & 0xffc)
716
717#define PCI_EXT_CAP_ID_ERR 0x01 /* Advanced Error Reporting */
718#define PCI_EXT_CAP_ID_VC 0x02 /* Virtual Channel Capability */
719#define PCI_EXT_CAP_ID_DSN 0x03 /* Device Serial Number */
720#define PCI_EXT_CAP_ID_PWR 0x04 /* Power Budgeting */
721#define PCI_EXT_CAP_ID_RCLD 0x05 /* Root Complex Link Declaration */
722#define PCI_EXT_CAP_ID_RCILC 0x06 /* Root Complex Internal Link Control */
723#define PCI_EXT_CAP_ID_RCEC 0x07 /* Root Complex Event Collector */
724#define PCI_EXT_CAP_ID_MFVC 0x08 /* Multi-Function VC Capability */
725#define PCI_EXT_CAP_ID_VC9 0x09 /* same as _VC */
726#define PCI_EXT_CAP_ID_RCRB 0x0A /* Root Complex RB? */
727#define PCI_EXT_CAP_ID_VNDR 0x0B /* Vendor-Specific */
728#define PCI_EXT_CAP_ID_CAC 0x0C /* Config Access - obsolete */
729#define PCI_EXT_CAP_ID_ACS 0x0D /* Access Control Services */
730#define PCI_EXT_CAP_ID_ARI 0x0E /* Alternate Routing ID */
731#define PCI_EXT_CAP_ID_ATS 0x0F /* Address Translation Services */
732#define PCI_EXT_CAP_ID_SRIOV 0x10 /* Single Root I/O Virtualization */
733#define PCI_EXT_CAP_ID_MRIOV 0x11 /* Multi Root I/O Virtualization */
734#define PCI_EXT_CAP_ID_MCAST 0x12 /* Multicast */
735#define PCI_EXT_CAP_ID_PRI 0x13 /* Page Request Interface */
736#define PCI_EXT_CAP_ID_AMD_XXX 0x14 /* Reserved for AMD */
737#define PCI_EXT_CAP_ID_REBAR 0x15 /* Resizable BAR */
738#define PCI_EXT_CAP_ID_DPA 0x16 /* Dynamic Power Allocation */
739#define PCI_EXT_CAP_ID_TPH 0x17 /* TPH Requester */
740#define PCI_EXT_CAP_ID_LTR 0x18 /* Latency Tolerance Reporting */
741#define PCI_EXT_CAP_ID_SECPCI 0x19 /* Secondary PCIe Capability */
742#define PCI_EXT_CAP_ID_PMUX 0x1A /* Protocol Multiplexing */
743#define PCI_EXT_CAP_ID_PASID 0x1B /* Process Address Space ID */
744#define PCI_EXT_CAP_ID_DPC 0x1D /* Downstream Port Containment */
745#define PCI_EXT_CAP_ID_L1SS 0x1E /* L1 PM Substates */
746#define PCI_EXT_CAP_ID_PTM 0x1F /* Precision Time Measurement */
747#define PCI_EXT_CAP_ID_DVSEC 0x23 /* Designated Vendor-Specific */
748#define PCI_EXT_CAP_ID_VF_REBAR 0x24 /* VF Resizable BAR */
749#define PCI_EXT_CAP_ID_DLF 0x25 /* Data Link Feature */
750#define PCI_EXT_CAP_ID_PL_16GT 0x26 /* Physical Layer 16.0 GT/s */
751#define PCI_EXT_CAP_ID_NPEM 0x29 /* Native PCIe Enclosure Management */
752#define PCI_EXT_CAP_ID_PL_32GT 0x2A /* Physical Layer 32.0 GT/s */
753#define PCI_EXT_CAP_ID_DOE 0x2E /* Data Object Exchange */
754#define PCI_EXT_CAP_ID_PL_64GT 0x31 /* Physical Layer 64.0 GT/s */
755#define PCI_EXT_CAP_ID_MAX PCI_EXT_CAP_ID_PL_64GT
756
757#define PCI_EXT_CAP_DSN_SIZEOF 12
758#define PCI_EXT_CAP_MCAST_ENDPOINT_SIZEOF 40
759
760/* Advanced Error Reporting */
761#define PCI_ERR_UNCOR_STATUS 0x04 /* Uncorrectable Error Status */
762#define PCI_ERR_UNC_UND 0x00000001 /* Undefined */
763#define PCI_ERR_UNC_DLP 0x00000010 /* Data Link Protocol */
764#define PCI_ERR_UNC_SURPDN 0x00000020 /* Surprise Down */
765#define PCI_ERR_UNC_POISON_TLP 0x00001000 /* Poisoned TLP */
766#define PCI_ERR_UNC_FCP 0x00002000 /* Flow Control Protocol */
767#define PCI_ERR_UNC_COMP_TIME 0x00004000 /* Completion Timeout */
768#define PCI_ERR_UNC_COMP_ABORT 0x00008000 /* Completer Abort */
769#define PCI_ERR_UNC_UNX_COMP 0x00010000 /* Unexpected Completion */
770#define PCI_ERR_UNC_RX_OVER 0x00020000 /* Receiver Overflow */
771#define PCI_ERR_UNC_MALF_TLP 0x00040000 /* Malformed TLP */
772#define PCI_ERR_UNC_ECRC 0x00080000 /* ECRC Error Status */
773#define PCI_ERR_UNC_UNSUP 0x00100000 /* Unsupported Request */
774#define PCI_ERR_UNC_ACSV 0x00200000 /* ACS Violation */
775#define PCI_ERR_UNC_INTN 0x00400000 /* internal error */
776#define PCI_ERR_UNC_MCBTLP 0x00800000 /* MC blocked TLP */
777#define PCI_ERR_UNC_ATOMEG 0x01000000 /* Atomic egress blocked */
778#define PCI_ERR_UNC_TLPPRE 0x02000000 /* TLP prefix blocked */
779#define PCI_ERR_UNCOR_MASK 0x08 /* Uncorrectable Error Mask */
780 /* Same bits as above */
781#define PCI_ERR_UNCOR_SEVER 0x0c /* Uncorrectable Error Severity */
782 /* Same bits as above */
783#define PCI_ERR_COR_STATUS 0x10 /* Correctable Error Status */
784#define PCI_ERR_COR_RCVR 0x00000001 /* Receiver Error Status */
785#define PCI_ERR_COR_BAD_TLP 0x00000040 /* Bad TLP Status */
786#define PCI_ERR_COR_BAD_DLLP 0x00000080 /* Bad DLLP Status */
787#define PCI_ERR_COR_REP_ROLL 0x00000100 /* REPLAY_NUM Rollover */
788#define PCI_ERR_COR_REP_TIMER 0x00001000 /* Replay Timer Timeout */
789#define PCI_ERR_COR_ADV_NFAT 0x00002000 /* Advisory Non-Fatal */
790#define PCI_ERR_COR_INTERNAL 0x00004000 /* Corrected Internal */
791#define PCI_ERR_COR_LOG_OVER 0x00008000 /* Header Log Overflow */
792#define PCI_ERR_COR_MASK 0x14 /* Correctable Error Mask */
793 /* Same bits as above */
794#define PCI_ERR_CAP 0x18 /* Advanced Error Capabilities & Ctrl*/
795#define PCI_ERR_CAP_FEP(x) ((x) & 0x1f) /* First Error Pointer */
796#define PCI_ERR_CAP_ECRC_GENC 0x00000020 /* ECRC Generation Capable */
797#define PCI_ERR_CAP_ECRC_GENE 0x00000040 /* ECRC Generation Enable */
798#define PCI_ERR_CAP_ECRC_CHKC 0x00000080 /* ECRC Check Capable */
799#define PCI_ERR_CAP_ECRC_CHKE 0x00000100 /* ECRC Check Enable */
800#define PCI_ERR_CAP_PREFIX_LOG_PRESENT 0x00000800 /* TLP Prefix Log Present */
801#define PCI_ERR_CAP_TLP_LOG_FLIT 0x00040000 /* TLP was logged in Flit Mode */
802#define PCI_ERR_CAP_TLP_LOG_SIZE 0x00f80000 /* Logged TLP Size (only in Flit mode) */
803#define PCI_ERR_HEADER_LOG 0x1c /* Header Log Register (16 bytes) */
804#define PCI_ERR_ROOT_COMMAND 0x2c /* Root Error Command */
805#define PCI_ERR_ROOT_CMD_COR_EN 0x00000001 /* Correctable Err Reporting Enable */
806#define PCI_ERR_ROOT_CMD_NONFATAL_EN 0x00000002 /* Non-Fatal Err Reporting Enable */
807#define PCI_ERR_ROOT_CMD_FATAL_EN 0x00000004 /* Fatal Err Reporting Enable */
808#define PCI_ERR_ROOT_STATUS 0x30
809#define PCI_ERR_ROOT_COR_RCV 0x00000001 /* ERR_COR Received */
810#define PCI_ERR_ROOT_MULTI_COR_RCV 0x00000002 /* Multiple ERR_COR */
811#define PCI_ERR_ROOT_UNCOR_RCV 0x00000004 /* ERR_FATAL/NONFATAL */
812#define PCI_ERR_ROOT_MULTI_UNCOR_RCV 0x00000008 /* Multiple FATAL/NONFATAL */
813#define PCI_ERR_ROOT_FIRST_FATAL 0x00000010 /* First UNC is Fatal */
814#define PCI_ERR_ROOT_NONFATAL_RCV 0x00000020 /* Non-Fatal Received */
815#define PCI_ERR_ROOT_FATAL_RCV 0x00000040 /* Fatal Received */
816#define PCI_ERR_ROOT_AER_IRQ 0xf8000000 /* Advanced Error Interrupt Message Number */
817#define PCI_ERR_ROOT_ERR_SRC 0x34 /* Error Source Identification */
818#define PCI_ERR_PREFIX_LOG 0x38 /* TLP Prefix LOG Register (up to 16 bytes) */
819
820/* Virtual Channel */
821#define PCI_VC_PORT_CAP1 0x04
822#define PCI_VC_CAP1_EVCC 0x00000007 /* extended VC count */
823#define PCI_VC_CAP1_LPEVCC 0x00000070 /* low prio extended VC count */
824#define PCI_VC_CAP1_ARB_SIZE 0x00000c00
825#define PCI_VC_PORT_CAP2 0x08
826#define PCI_VC_CAP2_32_PHASE 0x00000002
827#define PCI_VC_CAP2_64_PHASE 0x00000004
828#define PCI_VC_CAP2_128_PHASE 0x00000008
829#define PCI_VC_CAP2_ARB_OFF 0xff000000
830#define PCI_VC_PORT_CTRL 0x0c
831#define PCI_VC_PORT_CTRL_LOAD_TABLE 0x00000001
832#define PCI_VC_PORT_STATUS 0x0e
833#define PCI_VC_PORT_STATUS_TABLE 0x00000001
834#define PCI_VC_RES_CAP 0x10
835#define PCI_VC_RES_CAP_32_PHASE 0x00000002
836#define PCI_VC_RES_CAP_64_PHASE 0x00000004
837#define PCI_VC_RES_CAP_128_PHASE 0x00000008
838#define PCI_VC_RES_CAP_128_PHASE_TB 0x00000010
839#define PCI_VC_RES_CAP_256_PHASE 0x00000020
840#define PCI_VC_RES_CAP_ARB_OFF 0xff000000
841#define PCI_VC_RES_CTRL 0x14
842#define PCI_VC_RES_CTRL_LOAD_TABLE 0x00010000
843#define PCI_VC_RES_CTRL_ARB_SELECT 0x000e0000
844#define PCI_VC_RES_CTRL_ID 0x07000000
845#define PCI_VC_RES_CTRL_ENABLE 0x80000000
846#define PCI_VC_RES_STATUS 0x1a
847#define PCI_VC_RES_STATUS_TABLE 0x00000001
848#define PCI_VC_RES_STATUS_NEGO 0x00000002
849#define PCI_CAP_VC_BASE_SIZEOF 0x10
850#define PCI_CAP_VC_PER_VC_SIZEOF 0x0c
851
852/* Power Budgeting */
853#define PCI_PWR_DSR 0x04 /* Data Select Register */
854#define PCI_PWR_DATA 0x08 /* Data Register */
855#define PCI_PWR_DATA_BASE(x) ((x) & 0xff) /* Base Power */
856#define PCI_PWR_DATA_SCALE(x) (((x) >> 8) & 3) /* Data Scale */
857#define PCI_PWR_DATA_PM_SUB(x) (((x) >> 10) & 7) /* PM Sub State */
858#define PCI_PWR_DATA_PM_STATE(x) (((x) >> 13) & 3) /* PM State */
859#define PCI_PWR_DATA_TYPE(x) (((x) >> 15) & 7) /* Type */
860#define PCI_PWR_DATA_RAIL(x) (((x) >> 18) & 7) /* Power Rail */
861#define PCI_PWR_CAP 0x0c /* Capability */
862#define PCI_PWR_CAP_BUDGET(x) ((x) & 1) /* Included in system budget */
863#define PCI_EXT_CAP_PWR_SIZEOF 0x10
864
865/* Root Complex Event Collector Endpoint Association */
866#define PCI_RCEC_RCIEP_BITMAP 4 /* Associated Bitmap for RCiEPs */
867#define PCI_RCEC_BUSN 8 /* RCEC Associated Bus Numbers */
868#define PCI_RCEC_BUSN_REG_VER 0x02 /* Least version with BUSN present */
869#define PCI_RCEC_BUSN_NEXT(x) (((x) >> 8) & 0xff)
870#define PCI_RCEC_BUSN_LAST(x) (((x) >> 16) & 0xff)
871
872/* Vendor-Specific (VSEC, PCI_EXT_CAP_ID_VNDR) */
873#define PCI_VNDR_HEADER 4 /* Vendor-Specific Header */
874#define PCI_VNDR_HEADER_ID(x) ((x) & 0xffff)
875#define PCI_VNDR_HEADER_REV(x) (((x) >> 16) & 0xf)
876#define PCI_VNDR_HEADER_LEN(x) (((x) >> 20) & 0xfff)
877
878/*
879 * HyperTransport sub capability types
880 *
881 * Unfortunately there are both 3 bit and 5 bit capability types defined
882 * in the HT spec, catering for that is a little messy. You probably don't
883 * want to use these directly, just use pci_find_ht_capability() and it
884 * will do the right thing for you.
885 */
886#define HT_3BIT_CAP_MASK 0xE0
887#define HT_CAPTYPE_SLAVE 0x00 /* Slave/Primary link configuration */
888#define HT_CAPTYPE_HOST 0x20 /* Host/Secondary link configuration */
889
890#define HT_5BIT_CAP_MASK 0xF8
891#define HT_CAPTYPE_IRQ 0x80 /* IRQ Configuration */
892#define HT_CAPTYPE_REMAPPING_40 0xA0 /* 40 bit address remapping */
893#define HT_CAPTYPE_REMAPPING_64 0xA2 /* 64 bit address remapping */
894#define HT_CAPTYPE_UNITID_CLUMP 0x90 /* Unit ID clumping */
895#define HT_CAPTYPE_EXTCONF 0x98 /* Extended Configuration Space Access */
896#define HT_CAPTYPE_MSI_MAPPING 0xA8 /* MSI Mapping Capability */
897#define HT_MSI_FLAGS 0x02 /* Offset to flags */
898#define HT_MSI_FLAGS_ENABLE 0x1 /* Mapping enable */
899#define HT_MSI_FLAGS_FIXED 0x2 /* Fixed mapping only */
900#define HT_MSI_FIXED_ADDR 0x00000000FEE00000ULL /* Fixed addr */
901#define HT_MSI_ADDR_LO 0x04 /* Offset to low addr bits */
902#define HT_MSI_ADDR_LO_MASK 0xFFF00000 /* Low address bit mask */
903#define HT_MSI_ADDR_HI 0x08 /* Offset to high addr bits */
904#define HT_CAPTYPE_DIRECT_ROUTE 0xB0 /* Direct routing configuration */
905#define HT_CAPTYPE_VCSET 0xB8 /* Virtual Channel configuration */
906#define HT_CAPTYPE_ERROR_RETRY 0xC0 /* Retry on error configuration */
907#define HT_CAPTYPE_GEN3 0xD0 /* Generation 3 HyperTransport configuration */
908#define HT_CAPTYPE_PM 0xE0 /* HyperTransport power management configuration */
909#define HT_CAP_SIZEOF_LONG 28 /* slave & primary */
910#define HT_CAP_SIZEOF_SHORT 24 /* host & secondary */
911
912/* Alternative Routing-ID Interpretation */
913#define PCI_ARI_CAP 0x04 /* ARI Capability Register */
914#define PCI_ARI_CAP_MFVC 0x0001 /* MFVC Function Groups Capability */
915#define PCI_ARI_CAP_ACS 0x0002 /* ACS Function Groups Capability */
916#define PCI_ARI_CAP_NFN(x) (((x) >> 8) & 0xff) /* Next Function Number */
917#define PCI_ARI_CTRL 0x06 /* ARI Control Register */
918#define PCI_ARI_CTRL_MFVC 0x0001 /* MFVC Function Groups Enable */
919#define PCI_ARI_CTRL_ACS 0x0002 /* ACS Function Groups Enable */
920#define PCI_ARI_CTRL_FG(x) (((x) >> 4) & 7) /* Function Group */
921#define PCI_EXT_CAP_ARI_SIZEOF 8
922
923/* Address Translation Service */
924#define PCI_ATS_CAP 0x04 /* ATS Capability Register */
925#define PCI_ATS_CAP_QDEP(x) ((x) & 0x1f) /* Invalidate Queue Depth */
926#define PCI_ATS_MAX_QDEP 32 /* Max Invalidate Queue Depth */
927#define PCI_ATS_CAP_PAGE_ALIGNED 0x0020 /* Page Aligned Request */
928#define PCI_ATS_CTRL 0x06 /* ATS Control Register */
929#define PCI_ATS_CTRL_ENABLE 0x8000 /* ATS Enable */
930#define PCI_ATS_CTRL_STU(x) ((x) & 0x1f) /* Smallest Translation Unit */
931#define PCI_ATS_MIN_STU 12 /* shift of minimum STU block */
932#define PCI_EXT_CAP_ATS_SIZEOF 8
933
934/* Page Request Interface */
935#define PCI_PRI_CTRL 0x04 /* PRI control register */
936#define PCI_PRI_CTRL_ENABLE 0x0001 /* Enable */
937#define PCI_PRI_CTRL_RESET 0x0002 /* Reset */
938#define PCI_PRI_STATUS 0x06 /* PRI status register */
939#define PCI_PRI_STATUS_RF 0x0001 /* Response Failure */
940#define PCI_PRI_STATUS_UPRGI 0x0002 /* Unexpected PRG index */
941#define PCI_PRI_STATUS_STOPPED 0x0100 /* PRI Stopped */
942#define PCI_PRI_STATUS_PASID 0x8000 /* PRG Response PASID Required */
943#define PCI_PRI_MAX_REQ 0x08 /* PRI max reqs supported */
944#define PCI_PRI_ALLOC_REQ 0x0c /* PRI max reqs allowed */
945#define PCI_EXT_CAP_PRI_SIZEOF 16
946
947/* Process Address Space ID */
948#define PCI_PASID_CAP 0x04 /* PASID feature register */
949#define PCI_PASID_CAP_EXEC 0x0002 /* Exec permissions Supported */
950#define PCI_PASID_CAP_PRIV 0x0004 /* Privilege Mode Supported */
951#define PCI_PASID_CAP_WIDTH 0x1f00
952#define PCI_PASID_CTRL 0x06 /* PASID control register */
953#define PCI_PASID_CTRL_ENABLE 0x0001 /* Enable bit */
954#define PCI_PASID_CTRL_EXEC 0x0002 /* Exec permissions Enable */
955#define PCI_PASID_CTRL_PRIV 0x0004 /* Privilege Mode Enable */
956#define PCI_EXT_CAP_PASID_SIZEOF 8
957
958/* Single Root I/O Virtualization */
959#define PCI_SRIOV_CAP 0x04 /* SR-IOV Capabilities */
960#define PCI_SRIOV_CAP_VFM 0x00000001 /* VF Migration Capable */
961#define PCI_SRIOV_CAP_INTR(x) ((x) >> 21) /* Interrupt Message Number */
962#define PCI_SRIOV_CTRL 0x08 /* SR-IOV Control */
963#define PCI_SRIOV_CTRL_VFE 0x0001 /* VF Enable */
964#define PCI_SRIOV_CTRL_VFM 0x0002 /* VF Migration Enable */
965#define PCI_SRIOV_CTRL_INTR 0x0004 /* VF Migration Interrupt Enable */
966#define PCI_SRIOV_CTRL_MSE 0x0008 /* VF Memory Space Enable */
967#define PCI_SRIOV_CTRL_ARI 0x0010 /* ARI Capable Hierarchy */
968#define PCI_SRIOV_STATUS 0x0a /* SR-IOV Status */
969#define PCI_SRIOV_STATUS_VFM 0x0001 /* VF Migration Status */
970#define PCI_SRIOV_INITIAL_VF 0x0c /* Initial VFs */
971#define PCI_SRIOV_TOTAL_VF 0x0e /* Total VFs */
972#define PCI_SRIOV_NUM_VF 0x10 /* Number of VFs */
973#define PCI_SRIOV_FUNC_LINK 0x12 /* Function Dependency Link */
974#define PCI_SRIOV_VF_OFFSET 0x14 /* First VF Offset */
975#define PCI_SRIOV_VF_STRIDE 0x16 /* Following VF Stride */
976#define PCI_SRIOV_VF_DID 0x1a /* VF Device ID */
977#define PCI_SRIOV_SUP_PGSIZE 0x1c /* Supported Page Sizes */
978#define PCI_SRIOV_SYS_PGSIZE 0x20 /* System Page Size */
979#define PCI_SRIOV_BAR 0x24 /* VF BAR0 */
980#define PCI_SRIOV_NUM_BARS 6 /* Number of VF BARs */
981#define PCI_SRIOV_VFM 0x3c /* VF Migration State Array Offset*/
982#define PCI_SRIOV_VFM_BIR(x) ((x) & 7) /* State BIR */
983#define PCI_SRIOV_VFM_OFFSET(x) ((x) & ~7) /* State Offset */
984#define PCI_SRIOV_VFM_UA 0x0 /* Inactive.Unavailable */
985#define PCI_SRIOV_VFM_MI 0x1 /* Dormant.MigrateIn */
986#define PCI_SRIOV_VFM_MO 0x2 /* Active.MigrateOut */
987#define PCI_SRIOV_VFM_AV 0x3 /* Active.Available */
988#define PCI_EXT_CAP_SRIOV_SIZEOF 0x40
989
990#define PCI_LTR_MAX_SNOOP_LAT 0x4
991#define PCI_LTR_MAX_NOSNOOP_LAT 0x6
992#define PCI_LTR_VALUE_MASK 0x000003ff
993#define PCI_LTR_SCALE_MASK 0x00001c00
994#define PCI_LTR_SCALE_SHIFT 10
995#define PCI_LTR_NOSNOOP_VALUE 0x03ff0000 /* Max No-Snoop Latency Value */
996#define PCI_LTR_NOSNOOP_SCALE 0x1c000000 /* Scale for Max Value */
997#define PCI_EXT_CAP_LTR_SIZEOF 8
998
999/* Access Control Service */
1000#define PCI_ACS_CAP 0x04 /* ACS Capability Register */
1001#define PCI_ACS_SV 0x0001 /* Source Validation */
1002#define PCI_ACS_TB 0x0002 /* Translation Blocking */
1003#define PCI_ACS_RR 0x0004 /* P2P Request Redirect */
1004#define PCI_ACS_CR 0x0008 /* P2P Completion Redirect */
1005#define PCI_ACS_UF 0x0010 /* Upstream Forwarding */
1006#define PCI_ACS_EC 0x0020 /* P2P Egress Control */
1007#define PCI_ACS_DT 0x0040 /* Direct Translated P2P */
1008#define PCI_ACS_EGRESS_BITS 0x05 /* ACS Egress Control Vector Size */
1009#define PCI_ACS_CTRL 0x06 /* ACS Control Register */
1010#define PCI_ACS_EGRESS_CTL_V 0x08 /* ACS Egress Control Vector */
1011
1012/* SATA capability */
1013#define PCI_SATA_REGS 4 /* SATA REGs specifier */
1014#define PCI_SATA_REGS_MASK 0xF /* location - BAR#/inline */
1015#define PCI_SATA_REGS_INLINE 0xF /* REGS in config space */
1016#define PCI_SATA_SIZEOF_SHORT 8
1017#define PCI_SATA_SIZEOF_LONG 16
1018
1019/* Resizable BARs */
1020#define PCI_REBAR_CAP 4 /* capability register */
1021#define PCI_REBAR_CAP_SIZES 0xFFFFFFF0 /* supported BAR sizes */
1022#define PCI_REBAR_CTRL 8 /* control register */
1023#define PCI_REBAR_CTRL_BAR_IDX 0x00000007 /* BAR index */
1024#define PCI_REBAR_CTRL_NBAR_MASK 0x000000E0 /* # of resizable BARs */
1025#define PCI_REBAR_CTRL_NBAR_SHIFT 5 /* shift for # of BARs */
1026#define PCI_REBAR_CTRL_BAR_SIZE 0x00001F00 /* BAR size */
1027#define PCI_REBAR_CTRL_BAR_SHIFT 8 /* shift for BAR size */
1028
1029/* Dynamic Power Allocation */
1030#define PCI_DPA_CAP 4 /* capability register */
1031#define PCI_DPA_CAP_SUBSTATE_MASK 0x1F /* # substates - 1 */
1032#define PCI_DPA_BASE_SIZEOF 16 /* size with 0 substates */
1033
1034/* TPH Completer Support */
1035#define PCI_EXP_DEVCAP2_TPH_COMP_NONE 0x0 /* None */
1036#define PCI_EXP_DEVCAP2_TPH_COMP_TPH_ONLY 0x1 /* TPH only */
1037#define PCI_EXP_DEVCAP2_TPH_COMP_EXT_TPH 0x3 /* TPH and Extended TPH */
1038
1039/* TPH Requester */
1040#define PCI_TPH_CAP 4 /* capability register */
1041#define PCI_TPH_CAP_ST_NS 0x00000001 /* No ST Mode Supported */
1042#define PCI_TPH_CAP_ST_IV 0x00000002 /* Interrupt Vector Mode Supported */
1043#define PCI_TPH_CAP_ST_DS 0x00000004 /* Device Specific Mode Supported */
1044#define PCI_TPH_CAP_EXT_TPH 0x00000100 /* Ext TPH Requester Supported */
1045#define PCI_TPH_CAP_LOC_MASK 0x00000600 /* ST Table Location */
1046#define PCI_TPH_LOC_NONE 0x00000000 /* Not present */
1047#define PCI_TPH_LOC_CAP 0x00000200 /* In capability */
1048#define PCI_TPH_LOC_MSIX 0x00000400 /* In MSI-X */
1049#define PCI_TPH_CAP_ST_MASK 0x07FF0000 /* ST Table Size */
1050#define PCI_TPH_CAP_ST_SHIFT 16 /* ST Table Size shift */
1051#define PCI_TPH_BASE_SIZEOF 0xc /* Size with no ST table */
1052
1053#define PCI_TPH_CTRL 8 /* control register */
1054#define PCI_TPH_CTRL_MODE_SEL_MASK 0x00000007 /* ST Mode Select */
1055#define PCI_TPH_ST_NS_MODE 0x0 /* No ST Mode */
1056#define PCI_TPH_ST_IV_MODE 0x1 /* Interrupt Vector Mode */
1057#define PCI_TPH_ST_DS_MODE 0x2 /* Device Specific Mode */
1058#define PCI_TPH_CTRL_REQ_EN_MASK 0x00000300 /* TPH Requester Enable */
1059#define PCI_TPH_REQ_DISABLE 0x0 /* No TPH requests allowed */
1060#define PCI_TPH_REQ_TPH_ONLY 0x1 /* TPH only requests allowed */
1061#define PCI_TPH_REQ_EXT_TPH 0x3 /* Extended TPH requests allowed */
1062
1063/* Downstream Port Containment */
1064#define PCI_EXP_DPC_CAP 0x04 /* DPC Capability */
1065#define PCI_EXP_DPC_IRQ 0x001F /* Interrupt Message Number */
1066#define PCI_EXP_DPC_CAP_RP_EXT 0x0020 /* Root Port Extensions */
1067#define PCI_EXP_DPC_CAP_POISONED_TLP 0x0040 /* Poisoned TLP Egress Blocking Supported */
1068#define PCI_EXP_DPC_CAP_SW_TRIGGER 0x0080 /* Software Triggering Supported */
1069#define PCI_EXP_DPC_RP_PIO_LOG_SIZE 0x0F00 /* RP PIO Log Size [3:0] */
1070#define PCI_EXP_DPC_CAP_DL_ACTIVE 0x1000 /* ERR_COR signal on DL_Active supported */
1071#define PCI_EXP_DPC_RP_PIO_LOG_SIZE4 0x2000 /* RP PIO Log Size [4] */
1072
1073#define PCI_EXP_DPC_CTL 0x06 /* DPC control */
1074#define PCI_EXP_DPC_CTL_EN_FATAL 0x0001 /* Enable trigger on ERR_FATAL message */
1075#define PCI_EXP_DPC_CTL_EN_NONFATAL 0x0002 /* Enable trigger on ERR_NONFATAL message */
1076#define PCI_EXP_DPC_CTL_INT_EN 0x0008 /* DPC Interrupt Enable */
1077
1078#define PCI_EXP_DPC_STATUS 0x08 /* DPC Status */
1079#define PCI_EXP_DPC_STATUS_TRIGGER 0x0001 /* Trigger Status */
1080#define PCI_EXP_DPC_STATUS_TRIGGER_RSN 0x0006 /* Trigger Reason */
1081#define PCI_EXP_DPC_STATUS_TRIGGER_RSN_UNCOR 0x0000 /* Uncorrectable error */
1082#define PCI_EXP_DPC_STATUS_TRIGGER_RSN_NFE 0x0002 /* Rcvd ERR_NONFATAL */
1083#define PCI_EXP_DPC_STATUS_TRIGGER_RSN_FE 0x0004 /* Rcvd ERR_FATAL */
1084#define PCI_EXP_DPC_STATUS_TRIGGER_RSN_IN_EXT 0x0006 /* Reason in Trig Reason Extension field */
1085#define PCI_EXP_DPC_STATUS_INTERRUPT 0x0008 /* Interrupt Status */
1086#define PCI_EXP_DPC_RP_BUSY 0x0010 /* Root Port Busy */
1087#define PCI_EXP_DPC_STATUS_TRIGGER_RSN_EXT 0x0060 /* Trig Reason Extension */
1088#define PCI_EXP_DPC_STATUS_TRIGGER_RSN_RP_PIO 0x0000 /* RP PIO error */
1089#define PCI_EXP_DPC_STATUS_TRIGGER_RSN_SW_TRIGGER 0x0020 /* DPC SW Trigger bit */
1090#define PCI_EXP_DPC_RP_PIO_FEP 0x1f00 /* RP PIO First Err Ptr */
1091
1092#define PCI_EXP_DPC_SOURCE_ID 0x0A /* DPC Source Identifier */
1093
1094#define PCI_EXP_DPC_RP_PIO_STATUS 0x0C /* RP PIO Status */
1095#define PCI_EXP_DPC_RP_PIO_MASK 0x10 /* RP PIO Mask */
1096#define PCI_EXP_DPC_RP_PIO_SEVERITY 0x14 /* RP PIO Severity */
1097#define PCI_EXP_DPC_RP_PIO_SYSERROR 0x18 /* RP PIO SysError */
1098#define PCI_EXP_DPC_RP_PIO_EXCEPTION 0x1C /* RP PIO Exception */
1099#define PCI_EXP_DPC_RP_PIO_HEADER_LOG 0x20 /* RP PIO Header Log */
1100#define PCI_EXP_DPC_RP_PIO_IMPSPEC_LOG 0x30 /* RP PIO ImpSpec Log */
1101#define PCI_EXP_DPC_RP_PIO_TLPPREFIX_LOG 0x34 /* RP PIO TLP Prefix Log */
1102
1103/* Precision Time Measurement */
1104#define PCI_PTM_CAP 0x04 /* PTM Capability */
1105#define PCI_PTM_CAP_REQ 0x00000001 /* Requester capable */
1106#define PCI_PTM_CAP_RES 0x00000002 /* Responder capable */
1107#define PCI_PTM_CAP_ROOT 0x00000004 /* Root capable */
1108#define PCI_PTM_GRANULARITY_MASK 0x0000FF00 /* Clock granularity */
1109#define PCI_PTM_CTRL 0x08 /* PTM Control */
1110#define PCI_PTM_CTRL_ENABLE 0x00000001 /* PTM enable */
1111#define PCI_PTM_CTRL_ROOT 0x00000002 /* Root select */
1112
1113/* ASPM L1 PM Substates */
1114#define PCI_L1SS_CAP 0x04 /* Capabilities Register */
1115#define PCI_L1SS_CAP_PCIPM_L1_2 0x00000001 /* PCI-PM L1.2 Supported */
1116#define PCI_L1SS_CAP_PCIPM_L1_1 0x00000002 /* PCI-PM L1.1 Supported */
1117#define PCI_L1SS_CAP_ASPM_L1_2 0x00000004 /* ASPM L1.2 Supported */
1118#define PCI_L1SS_CAP_ASPM_L1_1 0x00000008 /* ASPM L1.1 Supported */
1119#define PCI_L1SS_CAP_L1_PM_SS 0x00000010 /* L1 PM Substates Supported */
1120#define PCI_L1SS_CAP_CM_RESTORE_TIME 0x0000ff00 /* Port Common_Mode_Restore_Time */
1121#define PCI_L1SS_CAP_P_PWR_ON_SCALE 0x00030000 /* Port T_POWER_ON scale */
1122#define PCI_L1SS_CAP_P_PWR_ON_VALUE 0x00f80000 /* Port T_POWER_ON value */
1123#define PCI_L1SS_CTL1 0x08 /* Control 1 Register */
1124#define PCI_L1SS_CTL1_PCIPM_L1_2 0x00000001 /* PCI-PM L1.2 Enable */
1125#define PCI_L1SS_CTL1_PCIPM_L1_1 0x00000002 /* PCI-PM L1.1 Enable */
1126#define PCI_L1SS_CTL1_ASPM_L1_2 0x00000004 /* ASPM L1.2 Enable */
1127#define PCI_L1SS_CTL1_ASPM_L1_1 0x00000008 /* ASPM L1.1 Enable */
1128#define PCI_L1SS_CTL1_L1_2_MASK 0x00000005
1129#define PCI_L1SS_CTL1_L1SS_MASK 0x0000000f
1130#define PCI_L1SS_CTL1_CM_RESTORE_TIME 0x0000ff00 /* Common_Mode_Restore_Time */
1131#define PCI_L1SS_CTL1_LTR_L12_TH_VALUE 0x03ff0000 /* LTR_L1.2_THRESHOLD_Value */
1132#define PCI_L1SS_CTL1_LTR_L12_TH_SCALE 0xe0000000 /* LTR_L1.2_THRESHOLD_Scale */
1133#define PCI_L1SS_CTL2 0x0c /* Control 2 Register */
1134#define PCI_L1SS_CTL2_T_PWR_ON_SCALE 0x00000003 /* T_POWER_ON Scale */
1135#define PCI_L1SS_CTL2_T_PWR_ON_VALUE 0x000000f8 /* T_POWER_ON Value */
1136
1137/* Designated Vendor-Specific (DVSEC, PCI_EXT_CAP_ID_DVSEC) */
1138#define PCI_DVSEC_HEADER1 0x4 /* Designated Vendor-Specific Header1 */
1139#define PCI_DVSEC_HEADER1_VID(x) ((x) & 0xffff)
1140#define PCI_DVSEC_HEADER1_REV(x) (((x) >> 16) & 0xf)
1141#define PCI_DVSEC_HEADER1_LEN(x) (((x) >> 20) & 0xfff)
1142#define PCI_DVSEC_HEADER2 0x8 /* Designated Vendor-Specific Header2 */
1143#define PCI_DVSEC_HEADER2_ID(x) ((x) & 0xffff)
1144
1145/* VF Resizable BARs, same layout as PCI_REBAR */
1146#define PCI_VF_REBAR_CAP PCI_REBAR_CAP
1147#define PCI_VF_REBAR_CAP_SIZES PCI_REBAR_CAP_SIZES
1148#define PCI_VF_REBAR_CTRL PCI_REBAR_CTRL
1149#define PCI_VF_REBAR_CTRL_BAR_IDX PCI_REBAR_CTRL_BAR_IDX
1150#define PCI_VF_REBAR_CTRL_NBAR_MASK PCI_REBAR_CTRL_NBAR_MASK
1151#define PCI_VF_REBAR_CTRL_BAR_SIZE PCI_REBAR_CTRL_BAR_SIZE
1152
1153/* Data Link Feature */
1154#define PCI_DLF_CAP 0x04 /* Capabilities Register */
1155#define PCI_DLF_EXCHANGE_ENABLE 0x80000000 /* Data Link Feature Exchange Enable */
1156
1157/* Secondary PCIe Capability 8.0 GT/s */
1158#define PCI_SECPCI_LE_CTRL 0x0c /* Lane Equalization Control Register */
1159
1160/* Physical Layer 16.0 GT/s */
1161#define PCI_PL_16GT_LE_CTRL 0x20 /* Lane Equalization Control Register */
1162#define PCI_PL_16GT_LE_CTRL_DSP_TX_PRESET_MASK 0x0000000F
1163#define PCI_PL_16GT_LE_CTRL_USP_TX_PRESET_MASK 0x000000F0
1164#define PCI_PL_16GT_LE_CTRL_USP_TX_PRESET_SHIFT 4
1165
1166/* Physical Layer 32.0 GT/s */
1167#define PCI_PL_32GT_LE_CTRL 0x20 /* Lane Equalization Control Register */
1168
1169/* Physical Layer 64.0 GT/s */
1170#define PCI_PL_64GT_LE_CTRL 0x20 /* Lane Equalization Control Register */
1171
1172/* Native PCIe Enclosure Management */
1173#define PCI_NPEM_CAP 0x04 /* NPEM capability register */
1174#define PCI_NPEM_CAP_CAPABLE 0x00000001 /* NPEM Capable */
1175
1176#define PCI_NPEM_CTRL 0x08 /* NPEM control register */
1177#define PCI_NPEM_CTRL_ENABLE 0x00000001 /* NPEM Enable */
1178
1179/*
1180 * Native PCIe Enclosure Management indication bits and Reset command bit
1181 * are corresponding for capability and control registers.
1182 */
1183#define PCI_NPEM_CMD_RESET 0x00000002 /* Reset Command */
1184#define PCI_NPEM_IND_OK 0x00000004 /* OK */
1185#define PCI_NPEM_IND_LOCATE 0x00000008 /* Locate */
1186#define PCI_NPEM_IND_FAIL 0x00000010 /* Fail */
1187#define PCI_NPEM_IND_REBUILD 0x00000020 /* Rebuild */
1188#define PCI_NPEM_IND_PFA 0x00000040 /* Predicted Failure Analysis */
1189#define PCI_NPEM_IND_HOTSPARE 0x00000080 /* Hot Spare */
1190#define PCI_NPEM_IND_ICA 0x00000100 /* In Critical Array */
1191#define PCI_NPEM_IND_IFA 0x00000200 /* In Failed Array */
1192#define PCI_NPEM_IND_IDT 0x00000400 /* Device Type */
1193#define PCI_NPEM_IND_DISABLED 0x00000800 /* Disabled */
1194#define PCI_NPEM_IND_SPEC_0 0x01000000
1195#define PCI_NPEM_IND_SPEC_1 0x02000000
1196#define PCI_NPEM_IND_SPEC_2 0x04000000
1197#define PCI_NPEM_IND_SPEC_3 0x08000000
1198#define PCI_NPEM_IND_SPEC_4 0x10000000
1199#define PCI_NPEM_IND_SPEC_5 0x20000000
1200#define PCI_NPEM_IND_SPEC_6 0x40000000
1201#define PCI_NPEM_IND_SPEC_7 0x80000000
1202
1203#define PCI_NPEM_STATUS 0x0c /* NPEM status register */
1204#define PCI_NPEM_STATUS_CC 0x00000001 /* Command Completed */
1205
1206/* Data Object Exchange */
1207#define PCI_DOE_CAP 0x04 /* DOE Capabilities Register */
1208#define PCI_DOE_CAP_INT_SUP 0x00000001 /* Interrupt Support */
1209#define PCI_DOE_CAP_INT_MSG_NUM 0x00000ffe /* Interrupt Message Number */
1210#define PCI_DOE_CTRL 0x08 /* DOE Control Register */
1211#define PCI_DOE_CTRL_ABORT 0x00000001 /* DOE Abort */
1212#define PCI_DOE_CTRL_INT_EN 0x00000002 /* DOE Interrupt Enable */
1213#define PCI_DOE_CTRL_GO 0x80000000 /* DOE Go */
1214#define PCI_DOE_STATUS 0x0c /* DOE Status Register */
1215#define PCI_DOE_STATUS_BUSY 0x00000001 /* DOE Busy */
1216#define PCI_DOE_STATUS_INT_STATUS 0x00000002 /* DOE Interrupt Status */
1217#define PCI_DOE_STATUS_ERROR 0x00000004 /* DOE Error */
1218#define PCI_DOE_STATUS_DATA_OBJECT_READY 0x80000000 /* Data Object Ready */
1219#define PCI_DOE_WRITE 0x10 /* DOE Write Data Mailbox Register */
1220#define PCI_DOE_READ 0x14 /* DOE Read Data Mailbox Register */
1221#define PCI_DOE_CAP_SIZEOF 0x18 /* Size of DOE register block */
1222
1223/* DOE Data Object - note not actually registers */
1224#define PCI_DOE_DATA_OBJECT_HEADER_1_VID 0x0000ffff
1225#define PCI_DOE_DATA_OBJECT_HEADER_1_TYPE 0x00ff0000
1226#define PCI_DOE_DATA_OBJECT_HEADER_2_LENGTH 0x0003ffff
1227
1228#define PCI_DOE_DATA_OBJECT_DISC_REQ_3_INDEX 0x000000ff
1229#define PCI_DOE_DATA_OBJECT_DISC_REQ_3_VER 0x0000ff00
1230#define PCI_DOE_DATA_OBJECT_DISC_RSP_3_VID 0x0000ffff
1231#define PCI_DOE_DATA_OBJECT_DISC_RSP_3_TYPE 0x00ff0000
1232#define PCI_DOE_DATA_OBJECT_DISC_RSP_3_NEXT_INDEX 0xff000000
1233
1234/* Deprecated old name, replaced with PCI_DOE_DATA_OBJECT_DISC_RSP_3_TYPE */
1235#define PCI_DOE_DATA_OBJECT_DISC_RSP_3_PROTOCOL PCI_DOE_DATA_OBJECT_DISC_RSP_3_TYPE
1236
1237/* Compute Express Link (CXL r3.1, sec 8.1.5) */
1238#define PCI_DVSEC_CXL_PORT 3
1239#define PCI_DVSEC_CXL_PORT_CTL 0x0c
1240#define PCI_DVSEC_CXL_PORT_CTL_UNMASK_SBR 0x00000001
1241
1242#endif /* LINUX_PCI_REGS_H */