5 * Copyright 1994, Drew Eckhardt
6 * Copyright 1997--1999 Martin Mares <mj@ucw.cz>
8 * For more information, please consult the following manuals (look at
9 * http://www.pcisig.com/ for how to get them):
11 * PCI BIOS Specification
12 * PCI Local Bus Specification
13 * PCI to PCI Bridge Specification
14 * PCI System Design Guide
16 * For hypertransport information, please consult the following manuals
17 * from http://www.hypertransport.org
19 * The Hypertransport I/O Link Specification
22 #ifndef LINUX_PCI_REGS_H
23 #define LINUX_PCI_REGS_H
26 * Under PCI, each device has 256 bytes of configuration address space,
27 * of which the first 64 bytes are standardized as follows:
29 #define PCI_VENDOR_ID 0x00 /* 16 bits */
30 #define PCI_DEVICE_ID 0x02 /* 16 bits */
31 #define PCI_COMMAND 0x04 /* 16 bits */
32 #define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */
33 #define PCI_COMMAND_MEMORY 0x2 /* Enable response in Memory space */
34 #define PCI_COMMAND_MASTER 0x4 /* Enable bus mastering */
35 #define PCI_COMMAND_SPECIAL 0x8 /* Enable response to special cycles */
36 #define PCI_COMMAND_INVALIDATE 0x10 /* Use memory write and invalidate */
37 #define PCI_COMMAND_VGA_PALETTE 0x20 /* Enable palette snooping */
38 #define PCI_COMMAND_PARITY 0x40 /* Enable parity checking */
39 #define PCI_COMMAND_WAIT 0x80 /* Enable address/data stepping */
40 #define PCI_COMMAND_SERR 0x100 /* Enable SERR */
41 #define PCI_COMMAND_FAST_BACK 0x200 /* Enable back-to-back writes */
42 #define PCI_COMMAND_INTX_DISABLE 0x400 /* INTx Emulation Disable */
44 #define PCI_STATUS 0x06 /* 16 bits */
45 #define PCI_STATUS_CAP_LIST 0x10 /* Support Capability List */
46 #define PCI_STATUS_66MHZ 0x20 /* Support 66 Mhz PCI 2.1 bus */
47 #define PCI_STATUS_UDF 0x40 /* Support User Definable Features [obsolete] */
48 #define PCI_STATUS_FAST_BACK 0x80 /* Accept fast-back to back */
49 #define PCI_STATUS_PARITY 0x100 /* Detected parity error */
50 #define PCI_STATUS_DEVSEL_MASK 0x600 /* DEVSEL timing */
51 #define PCI_STATUS_DEVSEL_FAST 0x000
52 #define PCI_STATUS_DEVSEL_MEDIUM 0x200
53 #define PCI_STATUS_DEVSEL_SLOW 0x400
54 #define PCI_STATUS_SIG_TARGET_ABORT 0x800 /* Set on target abort */
55 #define PCI_STATUS_REC_TARGET_ABORT 0x1000 /* Master ack of " */
56 #define PCI_STATUS_REC_MASTER_ABORT 0x2000 /* Set on master abort */
57 #define PCI_STATUS_SIG_SYSTEM_ERROR 0x4000 /* Set when we drive SERR */
58 #define PCI_STATUS_DETECTED_PARITY 0x8000 /* Set on parity error */
60 #define PCI_CLASS_REVISION 0x08 /* High 24 bits are class, low 8 revision */
61 #define PCI_REVISION_ID 0x08 /* Revision ID */
62 #define PCI_CLASS_PROG 0x09 /* Reg. Level Programming Interface */
63 #define PCI_CLASS_DEVICE 0x0a /* Device class */
65 #define PCI_CACHE_LINE_SIZE 0x0c /* 8 bits */
66 #define PCI_LATENCY_TIMER 0x0d /* 8 bits */
67 #define PCI_HEADER_TYPE 0x0e /* 8 bits */
68 #define PCI_HEADER_TYPE_NORMAL 0
69 #define PCI_HEADER_TYPE_BRIDGE 1
70 #define PCI_HEADER_TYPE_CARDBUS 2
72 #define PCI_BIST 0x0f /* 8 bits */
73 #define PCI_BIST_CODE_MASK 0x0f /* Return result */
74 #define PCI_BIST_START 0x40 /* 1 to start BIST, 2 secs or less */
75 #define PCI_BIST_CAPABLE 0x80 /* 1 if BIST capable */
78 * Base addresses specify locations in memory or I/O space.
79 * Decoded size can be determined by writing a value of
80 * 0xffffffff to the register, and reading it back. Only
83 #define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */
84 #define PCI_BASE_ADDRESS_1 0x14 /* 32 bits [htype 0,1 only] */
85 #define PCI_BASE_ADDRESS_2 0x18 /* 32 bits [htype 0 only] */
86 #define PCI_BASE_ADDRESS_3 0x1c /* 32 bits */
87 #define PCI_BASE_ADDRESS_4 0x20 /* 32 bits */
88 #define PCI_BASE_ADDRESS_5 0x24 /* 32 bits */
89 #define PCI_BASE_ADDRESS_SPACE 0x01 /* 0 = memory, 1 = I/O */
90 #define PCI_BASE_ADDRESS_SPACE_IO 0x01
91 #define PCI_BASE_ADDRESS_SPACE_MEMORY 0x00
92 #define PCI_BASE_ADDRESS_MEM_TYPE_MASK 0x06
93 #define PCI_BASE_ADDRESS_MEM_TYPE_32 0x00 /* 32 bit address */
94 #define PCI_BASE_ADDRESS_MEM_TYPE_1M 0x02 /* Below 1M [obsolete] */
95 #define PCI_BASE_ADDRESS_MEM_TYPE_64 0x04 /* 64 bit address */
96 #define PCI_BASE_ADDRESS_MEM_PREFETCH 0x08 /* prefetchable? */
97 #define PCI_BASE_ADDRESS_MEM_MASK (~0x0fU)
98 #define PCI_BASE_ADDRESS_IO_MASK (~0x03U)
99 /* bit 1 is reserved if address_space = 1 */
101 /* Header type 0 (normal devices) */
102 #define PCI_CARDBUS_CIS 0x28
103 #define PCI_SUBSYSTEM_VENDOR_ID 0x2c
104 #define PCI_SUBSYSTEM_ID 0x2e
105 #define PCI_ROM_ADDRESS 0x30 /* Bits 31..11 are address, 10..1 reserved */
106 #define PCI_ROM_ADDRESS_ENABLE 0x01
107 #define PCI_ROM_ADDRESS_MASK (~0x7ffUL)
109 #define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */
111 /* 0x35-0x3b are reserved */
112 #define PCI_INTERRUPT_LINE 0x3c /* 8 bits */
113 #define PCI_INTERRUPT_PIN 0x3d /* 8 bits */
114 #define PCI_MIN_GNT 0x3e /* 8 bits */
115 #define PCI_MAX_LAT 0x3f /* 8 bits */
117 /* Header type 1 (PCI-to-PCI bridges) */
118 #define PCI_PRIMARY_BUS 0x18 /* Primary bus number */
119 #define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */
120 #define PCI_SUBORDINATE_BUS 0x1a /* Highest bus number behind the bridge */
121 #define PCI_SEC_LATENCY_TIMER 0x1b /* Latency timer for secondary interface */
122 #define PCI_IO_BASE 0x1c /* I/O range behind the bridge */
123 #define PCI_IO_LIMIT 0x1d
124 #define PCI_IO_RANGE_TYPE_MASK 0x0fUL /* I/O bridging type */
125 #define PCI_IO_RANGE_TYPE_16 0x00
126 #define PCI_IO_RANGE_TYPE_32 0x01
127 #define PCI_IO_RANGE_MASK (~0x0fUL)
128 #define PCI_SEC_STATUS 0x1e /* Secondary status register, only bit 14 used */
129 #define PCI_MEMORY_BASE 0x20 /* Memory range behind */
130 #define PCI_MEMORY_LIMIT 0x22
131 #define PCI_MEMORY_RANGE_TYPE_MASK 0x0fUL
132 #define PCI_MEMORY_RANGE_MASK (~0x0fUL)
133 #define PCI_PREF_MEMORY_BASE 0x24 /* Prefetchable memory range behind */
134 #define PCI_PREF_MEMORY_LIMIT 0x26
135 #define PCI_PREF_RANGE_TYPE_MASK 0x0fUL
136 #define PCI_PREF_RANGE_TYPE_32 0x00
137 #define PCI_PREF_RANGE_TYPE_64 0x01
138 #define PCI_PREF_RANGE_MASK (~0x0fUL)
139 #define PCI_PREF_BASE_UPPER32 0x28 /* Upper half of prefetchable memory range */
140 #define PCI_PREF_LIMIT_UPPER32 0x2c
141 #define PCI_IO_BASE_UPPER16 0x30 /* Upper half of I/O addresses */
142 #define PCI_IO_LIMIT_UPPER16 0x32
143 /* 0x34 same as for htype 0 */
144 /* 0x35-0x3b is reserved */
145 #define PCI_ROM_ADDRESS1 0x38 /* Same as PCI_ROM_ADDRESS, but for htype 1 */
146 /* 0x3c-0x3d are same as for htype 0 */
147 #define PCI_BRIDGE_CONTROL 0x3e
148 #define PCI_BRIDGE_CTL_PARITY 0x01 /* Enable parity detection on secondary interface */
149 #define PCI_BRIDGE_CTL_SERR 0x02 /* The same for SERR forwarding */
150 #define PCI_BRIDGE_CTL_ISA 0x04 /* Enable ISA mode */
151 #define PCI_BRIDGE_CTL_VGA 0x08 /* Forward VGA addresses */
152 #define PCI_BRIDGE_CTL_MASTER_ABORT 0x20 /* Report master aborts */
153 #define PCI_BRIDGE_CTL_BUS_RESET 0x40 /* Secondary bus reset */
154 #define PCI_BRIDGE_CTL_FAST_BACK 0x80 /* Fast Back2Back enabled on secondary interface */
156 /* Header type 2 (CardBus bridges) */
157 #define PCI_CB_CAPABILITY_LIST 0x14
159 #define PCI_CB_SEC_STATUS 0x16 /* Secondary status */
160 #define PCI_CB_PRIMARY_BUS 0x18 /* PCI bus number */
161 #define PCI_CB_CARD_BUS 0x19 /* CardBus bus number */
162 #define PCI_CB_SUBORDINATE_BUS 0x1a /* Subordinate bus number */
163 #define PCI_CB_LATENCY_TIMER 0x1b /* CardBus latency timer */
164 #define PCI_CB_MEMORY_BASE_0 0x1c
165 #define PCI_CB_MEMORY_LIMIT_0 0x20
166 #define PCI_CB_MEMORY_BASE_1 0x24
167 #define PCI_CB_MEMORY_LIMIT_1 0x28
168 #define PCI_CB_IO_BASE_0 0x2c
169 #define PCI_CB_IO_BASE_0_HI 0x2e
170 #define PCI_CB_IO_LIMIT_0 0x30
171 #define PCI_CB_IO_LIMIT_0_HI 0x32
172 #define PCI_CB_IO_BASE_1 0x34
173 #define PCI_CB_IO_BASE_1_HI 0x36
174 #define PCI_CB_IO_LIMIT_1 0x38
175 #define PCI_CB_IO_LIMIT_1_HI 0x3a
176 #define PCI_CB_IO_RANGE_MASK (~0x03UL)
177 /* 0x3c-0x3d are same as for htype 0 */
178 #define PCI_CB_BRIDGE_CONTROL 0x3e
179 #define PCI_CB_BRIDGE_CTL_PARITY 0x01 /* Similar to standard bridge control register */
180 #define PCI_CB_BRIDGE_CTL_SERR 0x02
181 #define PCI_CB_BRIDGE_CTL_ISA 0x04
182 #define PCI_CB_BRIDGE_CTL_VGA 0x08
183 #define PCI_CB_BRIDGE_CTL_MASTER_ABORT 0x20
184 #define PCI_CB_BRIDGE_CTL_CB_RESET 0x40 /* CardBus reset */
185 #define PCI_CB_BRIDGE_CTL_16BIT_INT 0x80 /* Enable interrupt for 16-bit cards */
186 #define PCI_CB_BRIDGE_CTL_PREFETCH_MEM0 0x100 /* Prefetch enable for both memory regions */
187 #define PCI_CB_BRIDGE_CTL_PREFETCH_MEM1 0x200
188 #define PCI_CB_BRIDGE_CTL_POST_WRITES 0x400
189 #define PCI_CB_SUBSYSTEM_VENDOR_ID 0x40
190 #define PCI_CB_SUBSYSTEM_ID 0x42
191 #define PCI_CB_LEGACY_MODE_BASE 0x44 /* 16-bit PC Card legacy mode base address (ExCa) */
192 /* 0x48-0x7f reserved */
194 /* Capability lists */
196 #define PCI_CAP_LIST_ID 0 /* Capability ID */
197 #define PCI_CAP_ID_PM 0x01 /* Power Management */
198 #define PCI_CAP_ID_AGP 0x02 /* Accelerated Graphics Port */
199 #define PCI_CAP_ID_VPD 0x03 /* Vital Product Data */
200 #define PCI_CAP_ID_SLOTID 0x04 /* Slot Identification */
201 #define PCI_CAP_ID_MSI 0x05 /* Message Signalled Interrupts */
202 #define PCI_CAP_ID_CHSWP 0x06 /* CompactPCI HotSwap */
203 #define PCI_CAP_ID_PCIX 0x07 /* PCI-X */
204 #define PCI_CAP_ID_HT 0x08 /* HyperTransport */
205 #define PCI_CAP_ID_VNDR 0x09 /* Vendor specific */
206 #define PCI_CAP_ID_DBG 0x0A /* Debug port */
207 #define PCI_CAP_ID_CCRC 0x0B /* CompactPCI Central Resource Control */
208 #define PCI_CAP_ID_SHPC 0x0C /* PCI Standard Hot-Plug Controller */
209 #define PCI_CAP_ID_SSVID 0x0D /* Bridge subsystem vendor/device ID */
210 #define PCI_CAP_ID_AGP3 0x0E /* AGP Target PCI-PCI bridge */
211 #define PCI_CAP_ID_EXP 0x10 /* PCI Express */
212 #define PCI_CAP_ID_MSIX 0x11 /* MSI-X */
213 #define PCI_CAP_LIST_NEXT 1 /* Next capability in the list */
214 #define PCI_CAP_FLAGS 2 /* Capability defined flags (16 bits) */
215 #define PCI_CAP_SIZEOF 4
217 /* Power Management Registers */
219 #define PCI_PM_PMC 2 /* PM Capabilities Register */
220 #define PCI_PM_CAP_VER_MASK 0x0007 /* Version */
221 #define PCI_PM_CAP_PME_CLOCK 0x0008 /* PME clock required */
222 #define PCI_PM_CAP_RESERVED 0x0010 /* Reserved field */
223 #define PCI_PM_CAP_DSI 0x0020 /* Device specific initialization */
224 #define PCI_PM_CAP_AUX_POWER 0x01C0 /* Auxilliary power support mask */
225 #define PCI_PM_CAP_D1 0x0200 /* D1 power state support */
226 #define PCI_PM_CAP_D2 0x0400 /* D2 power state support */
227 #define PCI_PM_CAP_PME 0x0800 /* PME pin supported */
228 #define PCI_PM_CAP_PME_MASK 0xF800 /* PME Mask of all supported states */
229 #define PCI_PM_CAP_PME_D0 0x0800 /* PME# from D0 */
230 #define PCI_PM_CAP_PME_D1 0x1000 /* PME# from D1 */
231 #define PCI_PM_CAP_PME_D2 0x2000 /* PME# from D2 */
232 #define PCI_PM_CAP_PME_D3 0x4000 /* PME# from D3 (hot) */
233 #define PCI_PM_CAP_PME_D3cold 0x8000 /* PME# from D3 (cold) */
234 #define PCI_PM_CAP_PME_SHIFT 11 /* Start of the PME Mask in PMC */
235 #define PCI_PM_CTRL 4 /* PM control and status register */
236 #define PCI_PM_CTRL_STATE_MASK 0x0003 /* Current power state (D0 to D3) */
237 #define PCI_PM_CTRL_NO_SOFT_RESET 0x0004 /* No reset for D3hot->D0 */
238 #define PCI_PM_CTRL_PME_ENABLE 0x0100 /* PME pin enable */
239 #define PCI_PM_CTRL_DATA_SEL_MASK 0x1e00 /* Data select (??) */
240 #define PCI_PM_CTRL_DATA_SCALE_MASK 0x6000 /* Data scale (??) */
241 #define PCI_PM_CTRL_PME_STATUS 0x8000 /* PME pin status */
242 #define PCI_PM_PPB_EXTENSIONS 6 /* PPB support extensions (??) */
243 #define PCI_PM_PPB_B2_B3 0x40 /* Stop clock when in D3hot (??) */
244 #define PCI_PM_BPCC_ENABLE 0x80 /* Bus power/clock control enable (??) */
245 #define PCI_PM_DATA_REGISTER 7 /* (??) */
246 #define PCI_PM_SIZEOF 8
250 #define PCI_AGP_VERSION 2 /* BCD version number */
251 #define PCI_AGP_RFU 3 /* Rest of capability flags */
252 #define PCI_AGP_STATUS 4 /* Status register */
253 #define PCI_AGP_STATUS_RQ_MASK 0xff000000 /* Maximum number of requests - 1 */
254 #define PCI_AGP_STATUS_SBA 0x0200 /* Sideband addressing supported */
255 #define PCI_AGP_STATUS_64BIT 0x0020 /* 64-bit addressing supported */
256 #define PCI_AGP_STATUS_FW 0x0010 /* FW transfers supported */
257 #define PCI_AGP_STATUS_RATE4 0x0004 /* 4x transfer rate supported */
258 #define PCI_AGP_STATUS_RATE2 0x0002 /* 2x transfer rate supported */
259 #define PCI_AGP_STATUS_RATE1 0x0001 /* 1x transfer rate supported */
260 #define PCI_AGP_COMMAND 8 /* Control register */
261 #define PCI_AGP_COMMAND_RQ_MASK 0xff000000 /* Master: Maximum number of requests */
262 #define PCI_AGP_COMMAND_SBA 0x0200 /* Sideband addressing enabled */
263 #define PCI_AGP_COMMAND_AGP 0x0100 /* Allow processing of AGP transactions */
264 #define PCI_AGP_COMMAND_64BIT 0x0020 /* Allow processing of 64-bit addresses */
265 #define PCI_AGP_COMMAND_FW 0x0010 /* Force FW transfers */
266 #define PCI_AGP_COMMAND_RATE4 0x0004 /* Use 4x rate */
267 #define PCI_AGP_COMMAND_RATE2 0x0002 /* Use 2x rate */
268 #define PCI_AGP_COMMAND_RATE1 0x0001 /* Use 1x rate */
269 #define PCI_AGP_SIZEOF 12
271 /* Vital Product Data */
273 #define PCI_VPD_ADDR 2 /* Address to access (15 bits!) */
274 #define PCI_VPD_ADDR_MASK 0x7fff /* Address mask */
275 #define PCI_VPD_ADDR_F 0x8000 /* Write 0, 1 indicates completion */
276 #define PCI_VPD_DATA 4 /* 32-bits of data returned here */
278 /* Slot Identification */
280 #define PCI_SID_ESR 2 /* Expansion Slot Register */
281 #define PCI_SID_ESR_NSLOTS 0x1f /* Number of expansion slots available */
282 #define PCI_SID_ESR_FIC 0x20 /* First In Chassis Flag */
283 #define PCI_SID_CHASSIS_NR 3 /* Chassis Number */
285 /* Message Signalled Interrupts registers */
287 #define PCI_MSI_FLAGS 2 /* Various flags */
288 #define PCI_MSI_FLAGS_64BIT 0x80 /* 64-bit addresses allowed */
289 #define PCI_MSI_FLAGS_QSIZE 0x70 /* Message queue size configured */
290 #define PCI_MSI_FLAGS_QMASK 0x0e /* Maximum queue size available */
291 #define PCI_MSI_FLAGS_ENABLE 0x01 /* MSI feature enabled */
292 #define PCI_MSI_FLAGS_MASKBIT 0x100 /* 64-bit mask bits allowed */
293 #define PCI_MSI_RFU 3 /* Rest of capability flags */
294 #define PCI_MSI_ADDRESS_LO 4 /* Lower 32 bits */
295 #define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */
296 #define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */
297 #define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */
298 #define PCI_MSI_MASK_BIT 16 /* Mask bits register */
300 /* MSI-X registers (these are at offset PCI_MSIX_FLAGS) */
301 #define PCI_MSIX_FLAGS 2
302 #define PCI_MSIX_FLAGS_QSIZE 0x7FF
303 #define PCI_MSIX_FLAGS_ENABLE (1 << 15)
304 #define PCI_MSIX_FLAGS_MASKALL (1 << 14)
305 #define PCI_MSIX_FLAGS_BIRMASK (7 << 0)
306 #define PCI_MSIX_FLAGS_BITMASK (1 << 0)
308 /* CompactPCI Hotswap Register */
310 #define PCI_CHSWP_CSR 2 /* Control and Status Register */
311 #define PCI_CHSWP_DHA 0x01 /* Device Hiding Arm */
312 #define PCI_CHSWP_EIM 0x02 /* ENUM# Signal Mask */
313 #define PCI_CHSWP_PIE 0x04 /* Pending Insert or Extract */
314 #define PCI_CHSWP_LOO 0x08 /* LED On / Off */
315 #define PCI_CHSWP_PI 0x30 /* Programming Interface */
316 #define PCI_CHSWP_EXT 0x40 /* ENUM# status - extraction */
317 #define PCI_CHSWP_INS 0x80 /* ENUM# status - insertion */
319 /* PCI-X registers */
321 #define PCI_X_CMD 2 /* Modes & Features */
322 #define PCI_X_CMD_DPERR_E 0x0001 /* Data Parity Error Recovery Enable */
323 #define PCI_X_CMD_ERO 0x0002 /* Enable Relaxed Ordering */
324 #define PCI_X_CMD_READ_512 0x0000 /* 512 byte maximum read byte count */
325 #define PCI_X_CMD_READ_1K 0x0004 /* 1Kbyte maximum read byte count */
326 #define PCI_X_CMD_READ_2K 0x0008 /* 2Kbyte maximum read byte count */
327 #define PCI_X_CMD_READ_4K 0x000c /* 4Kbyte maximum read byte count */
328 #define PCI_X_CMD_MAX_READ 0x000c /* Max Memory Read Byte Count */
329 /* Max # of outstanding split transactions */
330 #define PCI_X_CMD_SPLIT_1 0x0000 /* Max 1 */
331 #define PCI_X_CMD_SPLIT_2 0x0010 /* Max 2 */
332 #define PCI_X_CMD_SPLIT_3 0x0020 /* Max 3 */
333 #define PCI_X_CMD_SPLIT_4 0x0030 /* Max 4 */
334 #define PCI_X_CMD_SPLIT_8 0x0040 /* Max 8 */
335 #define PCI_X_CMD_SPLIT_12 0x0050 /* Max 12 */
336 #define PCI_X_CMD_SPLIT_16 0x0060 /* Max 16 */
337 #define PCI_X_CMD_SPLIT_32 0x0070 /* Max 32 */
338 #define PCI_X_CMD_MAX_SPLIT 0x0070 /* Max Outstanding Split Transactions */
339 #define PCI_X_CMD_VERSION(x) (((x) >> 12) & 3) /* Version */
340 #define PCI_X_STATUS 4 /* PCI-X capabilities */
341 #define PCI_X_STATUS_DEVFN 0x000000ff /* A copy of devfn */
342 #define PCI_X_STATUS_BUS 0x0000ff00 /* A copy of bus nr */
343 #define PCI_X_STATUS_64BIT 0x00010000 /* 64-bit device */
344 #define PCI_X_STATUS_133MHZ 0x00020000 /* 133 MHz capable */
345 #define PCI_X_STATUS_SPL_DISC 0x00040000 /* Split Completion Discarded */
346 #define PCI_X_STATUS_UNX_SPL 0x00080000 /* Unexpected Split Completion */
347 #define PCI_X_STATUS_COMPLEX 0x00100000 /* Device Complexity */
348 #define PCI_X_STATUS_MAX_READ 0x00600000 /* Designed Max Memory Read Count */
349 #define PCI_X_STATUS_MAX_SPLIT 0x03800000 /* Designed Max Outstanding Split Transactions */
350 #define PCI_X_STATUS_MAX_CUM 0x1c000000 /* Designed Max Cumulative Read Size */
351 #define PCI_X_STATUS_SPL_ERR 0x20000000 /* Rcvd Split Completion Error Msg */
352 #define PCI_X_STATUS_266MHZ 0x40000000 /* 266 MHz capable */
353 #define PCI_X_STATUS_533MHZ 0x80000000 /* 533 MHz capable */
355 /* PCI Express capability registers */
357 #define PCI_EXP_FLAGS 2 /* Capabilities register */
358 #define PCI_EXP_FLAGS_VERS 0x000f /* Capability version */
359 #define PCI_EXP_FLAGS_TYPE 0x00f0 /* Device/Port type */
360 #define PCI_EXP_TYPE_ENDPOINT 0x0 /* Express Endpoint */
361 #define PCI_EXP_TYPE_LEG_END 0x1 /* Legacy Endpoint */
362 #define PCI_EXP_TYPE_ROOT_PORT 0x4 /* Root Port */
363 #define PCI_EXP_TYPE_UPSTREAM 0x5 /* Upstream Port */
364 #define PCI_EXP_TYPE_DOWNSTREAM 0x6 /* Downstream Port */
365 #define PCI_EXP_TYPE_PCI_BRIDGE 0x7 /* PCI/PCI-X Bridge */
366 #define PCI_EXP_FLAGS_SLOT 0x0100 /* Slot implemented */
367 #define PCI_EXP_FLAGS_IRQ 0x3e00 /* Interrupt message number */
368 #define PCI_EXP_DEVCAP 4 /* Device capabilities */
369 #define PCI_EXP_DEVCAP_PAYLOAD 0x07 /* Max_Payload_Size */
370 #define PCI_EXP_DEVCAP_PHANTOM 0x18 /* Phantom functions */
371 #define PCI_EXP_DEVCAP_EXT_TAG 0x20 /* Extended tags */
372 #define PCI_EXP_DEVCAP_L0S 0x1c0 /* L0s Acceptable Latency */
373 #define PCI_EXP_DEVCAP_L1 0xe00 /* L1 Acceptable Latency */
374 #define PCI_EXP_DEVCAP_ATN_BUT 0x1000 /* Attention Button Present */
375 #define PCI_EXP_DEVCAP_ATN_IND 0x2000 /* Attention Indicator Present */
376 #define PCI_EXP_DEVCAP_PWR_IND 0x4000 /* Power Indicator Present */
377 #define PCI_EXP_DEVCAP_RBER 0x8000 /* Role-Based Error Reporting */
378 #define PCI_EXP_DEVCAP_PWR_VAL 0x3fc0000 /* Slot Power Limit Value */
379 #define PCI_EXP_DEVCAP_PWR_SCL 0xc000000 /* Slot Power Limit Scale */
380 #define PCI_EXP_DEVCAP_FLR 0x10000000 /* Function Level Reset */
381 #define PCI_EXP_DEVCTL 8 /* Device Control */
382 #define PCI_EXP_DEVCTL_CERE 0x0001 /* Correctable Error Reporting En. */
383 #define PCI_EXP_DEVCTL_NFERE 0x0002 /* Non-Fatal Error Reporting Enable */
384 #define PCI_EXP_DEVCTL_FERE 0x0004 /* Fatal Error Reporting Enable */
385 #define PCI_EXP_DEVCTL_URRE 0x0008 /* Unsupported Request Reporting En. */
386 #define PCI_EXP_DEVCTL_RELAX_EN 0x0010 /* Enable relaxed ordering */
387 #define PCI_EXP_DEVCTL_PAYLOAD 0x00e0 /* Max_Payload_Size */
388 #define PCI_EXP_DEVCTL_EXT_TAG 0x0100 /* Extended Tag Field Enable */
389 #define PCI_EXP_DEVCTL_PHANTOM 0x0200 /* Phantom Functions Enable */
390 #define PCI_EXP_DEVCTL_AUX_PME 0x0400 /* Auxiliary Power PM Enable */
391 #define PCI_EXP_DEVCTL_NOSNOOP_EN 0x0800 /* Enable No Snoop */
392 #define PCI_EXP_DEVCTL_READRQ 0x7000 /* Max_Read_Request_Size */
393 #define PCI_EXP_DEVCTL_BCR_FLR 0x8000 /* Bridge Configuration Retry / FLR */
394 #define PCI_EXP_DEVSTA 10 /* Device Status */
395 #define PCI_EXP_DEVSTA_CED 0x01 /* Correctable Error Detected */
396 #define PCI_EXP_DEVSTA_NFED 0x02 /* Non-Fatal Error Detected */
397 #define PCI_EXP_DEVSTA_FED 0x04 /* Fatal Error Detected */
398 #define PCI_EXP_DEVSTA_URD 0x08 /* Unsupported Request Detected */
399 #define PCI_EXP_DEVSTA_AUXPD 0x10 /* AUX Power Detected */
400 #define PCI_EXP_DEVSTA_TRPND 0x20 /* Transactions Pending */
401 #define PCI_EXP_LNKCAP 12 /* Link Capabilities */
402 #define PCI_EXP_LNKCAP_ASPMS 0xc00 /* ASPM Support */
403 #define PCI_EXP_LNKCAP_L0SEL 0x7000 /* L0s Exit Latency */
404 #define PCI_EXP_LNKCAP_L1EL 0x38000 /* L1 Exit Latency */
405 #define PCI_EXP_LNKCAP_CLKPM 0x40000 /* L1 Clock Power Management */
406 #define PCI_EXP_LNKCTL 16 /* Link Control */
407 #define PCI_EXP_LNKCTL_RL 0x20 /* Retrain Link */
408 #define PCI_EXP_LNKCTL_CCC 0x40 /* Common Clock COnfiguration */
409 #define PCI_EXP_LNKCTL_CLKREQ_EN 0x100 /* Enable clkreq */
410 #define PCI_EXP_LNKSTA 18 /* Link Status */
411 #define PCI_EXP_LNKSTA_LT 0x800 /* Link Training */
412 #define PCI_EXP_LNKSTA_SLC 0x1000 /* Slot Clock Configuration */
413 #define PCI_EXP_SLTCAP 20 /* Slot Capabilities */
414 #define PCI_EXP_SLTCTL 24 /* Slot Control */
415 #define PCI_EXP_SLTSTA 26 /* Slot Status */
416 #define PCI_EXP_RTCTL 28 /* Root Control */
417 #define PCI_EXP_RTCTL_SECEE 0x01 /* System Error on Correctable Error */
418 #define PCI_EXP_RTCTL_SENFEE 0x02 /* System Error on Non-Fatal Error */
419 #define PCI_EXP_RTCTL_SEFEE 0x04 /* System Error on Fatal Error */
420 #define PCI_EXP_RTCTL_PMEIE 0x08 /* PME Interrupt Enable */
421 #define PCI_EXP_RTCTL_CRSSVE 0x10 /* CRS Software Visibility Enable */
422 #define PCI_EXP_RTCAP 30 /* Root Capabilities */
423 #define PCI_EXP_RTSTA 32 /* Root Status */
424 #define PCI_EXP_DEVCAP2 36 /* Device Capabilities 2 */
425 #define PCI_EXP_DEVCAP2_ARI 0x20 /* Alternative Routing-ID */
426 #define PCI_EXP_DEVCTL2 40 /* Device Control 2 */
427 #define PCI_EXP_DEVCTL2_ARI 0x20 /* Alternative Routing-ID */
429 /* Extended Capabilities (PCI-X 2.0 and Express) */
430 #define PCI_EXT_CAP_ID(header) (header & 0x0000ffff)
431 #define PCI_EXT_CAP_VER(header) ((header >> 16) & 0xf)
432 #define PCI_EXT_CAP_NEXT(header) ((header >> 20) & 0xffc)
434 #define PCI_EXT_CAP_ID_ERR 1
435 #define PCI_EXT_CAP_ID_VC 2
436 #define PCI_EXT_CAP_ID_DSN 3
437 #define PCI_EXT_CAP_ID_PWR 4
438 #define PCI_EXT_CAP_ID_ARI 14
440 /* Advanced Error Reporting */
441 #define PCI_ERR_UNCOR_STATUS 4 /* Uncorrectable Error Status */
442 #define PCI_ERR_UNC_TRAIN 0x00000001 /* Training */
443 #define PCI_ERR_UNC_DLP 0x00000010 /* Data Link Protocol */
444 #define PCI_ERR_UNC_POISON_TLP 0x00001000 /* Poisoned TLP */
445 #define PCI_ERR_UNC_FCP 0x00002000 /* Flow Control Protocol */
446 #define PCI_ERR_UNC_COMP_TIME 0x00004000 /* Completion Timeout */
447 #define PCI_ERR_UNC_COMP_ABORT 0x00008000 /* Completer Abort */
448 #define PCI_ERR_UNC_UNX_COMP 0x00010000 /* Unexpected Completion */
449 #define PCI_ERR_UNC_RX_OVER 0x00020000 /* Receiver Overflow */
450 #define PCI_ERR_UNC_MALF_TLP 0x00040000 /* Malformed TLP */
451 #define PCI_ERR_UNC_ECRC 0x00080000 /* ECRC Error Status */
452 #define PCI_ERR_UNC_UNSUP 0x00100000 /* Unsupported Request */
453 #define PCI_ERR_UNCOR_MASK 8 /* Uncorrectable Error Mask */
454 /* Same bits as above */
455 #define PCI_ERR_UNCOR_SEVER 12 /* Uncorrectable Error Severity */
456 /* Same bits as above */
457 #define PCI_ERR_COR_STATUS 16 /* Correctable Error Status */
458 #define PCI_ERR_COR_RCVR 0x00000001 /* Receiver Error Status */
459 #define PCI_ERR_COR_BAD_TLP 0x00000040 /* Bad TLP Status */
460 #define PCI_ERR_COR_BAD_DLLP 0x00000080 /* Bad DLLP Status */
461 #define PCI_ERR_COR_REP_ROLL 0x00000100 /* REPLAY_NUM Rollover */
462 #define PCI_ERR_COR_REP_TIMER 0x00001000 /* Replay Timer Timeout */
463 #define PCI_ERR_COR_MASK 20 /* Correctable Error Mask */
464 /* Same bits as above */
465 #define PCI_ERR_CAP 24 /* Advanced Error Capabilities */
466 #define PCI_ERR_CAP_FEP(x) ((x) & 31) /* First Error Pointer */
467 #define PCI_ERR_CAP_ECRC_GENC 0x00000020 /* ECRC Generation Capable */
468 #define PCI_ERR_CAP_ECRC_GENE 0x00000040 /* ECRC Generation Enable */
469 #define PCI_ERR_CAP_ECRC_CHKC 0x00000080 /* ECRC Check Capable */
470 #define PCI_ERR_CAP_ECRC_CHKE 0x00000100 /* ECRC Check Enable */
471 #define PCI_ERR_HEADER_LOG 28 /* Header Log Register (16 bytes) */
472 #define PCI_ERR_ROOT_COMMAND 44 /* Root Error Command */
473 /* Correctable Err Reporting Enable */
474 #define PCI_ERR_ROOT_CMD_COR_EN 0x00000001
475 /* Non-fatal Err Reporting Enable */
476 #define PCI_ERR_ROOT_CMD_NONFATAL_EN 0x00000002
477 /* Fatal Err Reporting Enable */
478 #define PCI_ERR_ROOT_CMD_FATAL_EN 0x00000004
479 #define PCI_ERR_ROOT_STATUS 48
480 #define PCI_ERR_ROOT_COR_RCV 0x00000001 /* ERR_COR Received */
481 /* Multi ERR_COR Received */
482 #define PCI_ERR_ROOT_MULTI_COR_RCV 0x00000002
483 /* ERR_FATAL/NONFATAL Recevied */
484 #define PCI_ERR_ROOT_UNCOR_RCV 0x00000004
485 /* Multi ERR_FATAL/NONFATAL Recevied */
486 #define PCI_ERR_ROOT_MULTI_UNCOR_RCV 0x00000008
487 #define PCI_ERR_ROOT_FIRST_FATAL 0x00000010 /* First Fatal */
488 #define PCI_ERR_ROOT_NONFATAL_RCV 0x00000020 /* Non-Fatal Received */
489 #define PCI_ERR_ROOT_FATAL_RCV 0x00000040 /* Fatal Received */
490 #define PCI_ERR_ROOT_COR_SRC 52
491 #define PCI_ERR_ROOT_SRC 54
493 /* Virtual Channel */
494 #define PCI_VC_PORT_REG1 4
495 #define PCI_VC_PORT_REG2 8
496 #define PCI_VC_PORT_CTRL 12
497 #define PCI_VC_PORT_STATUS 14
498 #define PCI_VC_RES_CAP 16
499 #define PCI_VC_RES_CTRL 20
500 #define PCI_VC_RES_STATUS 26
502 /* Power Budgeting */
503 #define PCI_PWR_DSR 4 /* Data Select Register */
504 #define PCI_PWR_DATA 8 /* Data Register */
505 #define PCI_PWR_DATA_BASE(x) ((x) & 0xff) /* Base Power */
506 #define PCI_PWR_DATA_SCALE(x) (((x) >> 8) & 3) /* Data Scale */
507 #define PCI_PWR_DATA_PM_SUB(x) (((x) >> 10) & 7) /* PM Sub State */
508 #define PCI_PWR_DATA_PM_STATE(x) (((x) >> 13) & 3) /* PM State */
509 #define PCI_PWR_DATA_TYPE(x) (((x) >> 15) & 7) /* Type */
510 #define PCI_PWR_DATA_RAIL(x) (((x) >> 18) & 7) /* Power Rail */
511 #define PCI_PWR_CAP 12 /* Capability */
512 #define PCI_PWR_CAP_BUDGET(x) ((x) & 1) /* Included in system budget */
515 * Hypertransport sub capability types
517 * Unfortunately there are both 3 bit and 5 bit capability types defined
518 * in the HT spec, catering for that is a little messy. You probably don't
519 * want to use these directly, just use pci_find_ht_capability() and it
520 * will do the right thing for you.
522 #define HT_3BIT_CAP_MASK 0xE0
523 #define HT_CAPTYPE_SLAVE 0x00 /* Slave/Primary link configuration */
524 #define HT_CAPTYPE_HOST 0x20 /* Host/Secondary link configuration */
526 #define HT_5BIT_CAP_MASK 0xF8
527 #define HT_CAPTYPE_IRQ 0x80 /* IRQ Configuration */
528 #define HT_CAPTYPE_REMAPPING_40 0xA0 /* 40 bit address remapping */
529 #define HT_CAPTYPE_REMAPPING_64 0xA2 /* 64 bit address remapping */
530 #define HT_CAPTYPE_UNITID_CLUMP 0x90 /* Unit ID clumping */
531 #define HT_CAPTYPE_EXTCONF 0x98 /* Extended Configuration Space Access */
532 #define HT_CAPTYPE_MSI_MAPPING 0xA8 /* MSI Mapping Capability */
533 #define HT_MSI_FLAGS 0x02 /* Offset to flags */
534 #define HT_MSI_FLAGS_ENABLE 0x1 /* Mapping enable */
535 #define HT_MSI_FLAGS_FIXED 0x2 /* Fixed mapping only */
536 #define HT_MSI_FIXED_ADDR 0x00000000FEE00000ULL /* Fixed addr */
537 #define HT_MSI_ADDR_LO 0x04 /* Offset to low addr bits */
538 #define HT_MSI_ADDR_LO_MASK 0xFFF00000 /* Low address bit mask */
539 #define HT_MSI_ADDR_HI 0x08 /* Offset to high addr bits */
540 #define HT_CAPTYPE_DIRECT_ROUTE 0xB0 /* Direct routing configuration */
541 #define HT_CAPTYPE_VCSET 0xB8 /* Virtual Channel configuration */
542 #define HT_CAPTYPE_ERROR_RETRY 0xC0 /* Retry on error configuration */
543 #define HT_CAPTYPE_GEN3 0xD0 /* Generation 3 hypertransport configuration */
544 #define HT_CAPTYPE_PM 0xE0 /* Hypertransport powermanagement configuration */
546 /* Alternative Routing-ID Interpretation */
547 #define PCI_ARI_CAP 0x04 /* ARI Capability Register */
548 #define PCI_ARI_CAP_MFVC 0x0001 /* MFVC Function Groups Capability */
549 #define PCI_ARI_CAP_ACS 0x0002 /* ACS Function Groups Capability */
550 #define PCI_ARI_CAP_NFN(x) (((x) >> 8) & 0xff) /* Next Function Number */
551 #define PCI_ARI_CTRL 0x06 /* ARI Control Register */
552 #define PCI_ARI_CTRL_MFVC 0x0001 /* MFVC Function Groups Enable */
553 #define PCI_ARI_CTRL_ACS 0x0002 /* ACS Function Groups Enable */
554 #define PCI_ARI_CTRL_FG(x) (((x) >> 4) & 7) /* Function Group */
556 #endif /* LINUX_PCI_REGS_H */
