xref: /openbmc/linux/include/uapi/linux/pci_regs.h (revision b34e08d5)
1 /*
2  *	pci_regs.h
3  *
4  *	PCI standard defines
5  *	Copyright 1994, Drew Eckhardt
6  *	Copyright 1997--1999 Martin Mares <mj@ucw.cz>
7  *
8  *	For more information, please consult the following manuals (look at
9  *	http://www.pcisig.com/ for how to get them):
10  *
11  *	PCI BIOS Specification
12  *	PCI Local Bus Specification
13  *	PCI to PCI Bridge Specification
14  *	PCI System Design Guide
15  *
16  *	For HyperTransport information, please consult the following manuals
17  *	from http://www.hypertransport.org
18  *
19  *	The HyperTransport I/O Link Specification
20  */
21 
22 #ifndef LINUX_PCI_REGS_H
23 #define LINUX_PCI_REGS_H
24 
25 /*
26  * Under PCI, each device has 256 bytes of configuration address space,
27  * of which the first 64 bytes are standardized as follows:
28  */
29 #define PCI_STD_HEADER_SIZEOF	64
30 #define PCI_VENDOR_ID		0x00	/* 16 bits */
31 #define PCI_DEVICE_ID		0x02	/* 16 bits */
32 #define PCI_COMMAND		0x04	/* 16 bits */
33 #define  PCI_COMMAND_IO		0x1	/* Enable response in I/O space */
34 #define  PCI_COMMAND_MEMORY	0x2	/* Enable response in Memory space */
35 #define  PCI_COMMAND_MASTER	0x4	/* Enable bus mastering */
36 #define  PCI_COMMAND_SPECIAL	0x8	/* Enable response to special cycles */
37 #define  PCI_COMMAND_INVALIDATE	0x10	/* Use memory write and invalidate */
38 #define  PCI_COMMAND_VGA_PALETTE 0x20	/* Enable palette snooping */
39 #define  PCI_COMMAND_PARITY	0x40	/* Enable parity checking */
40 #define  PCI_COMMAND_WAIT	0x80	/* Enable address/data stepping */
41 #define  PCI_COMMAND_SERR	0x100	/* Enable SERR */
42 #define  PCI_COMMAND_FAST_BACK	0x200	/* Enable back-to-back writes */
43 #define  PCI_COMMAND_INTX_DISABLE 0x400 /* INTx Emulation Disable */
44 
45 #define PCI_STATUS		0x06	/* 16 bits */
46 #define  PCI_STATUS_INTERRUPT	0x08	/* Interrupt status */
47 #define  PCI_STATUS_CAP_LIST	0x10	/* Support Capability List */
48 #define  PCI_STATUS_66MHZ	0x20	/* Support 66 MHz PCI 2.1 bus */
49 #define  PCI_STATUS_UDF		0x40	/* Support User Definable Features [obsolete] */
50 #define  PCI_STATUS_FAST_BACK	0x80	/* Accept fast-back to back */
51 #define  PCI_STATUS_PARITY	0x100	/* Detected parity error */
52 #define  PCI_STATUS_DEVSEL_MASK	0x600	/* DEVSEL timing */
53 #define  PCI_STATUS_DEVSEL_FAST		0x000
54 #define  PCI_STATUS_DEVSEL_MEDIUM	0x200
55 #define  PCI_STATUS_DEVSEL_SLOW		0x400
56 #define  PCI_STATUS_SIG_TARGET_ABORT	0x800 /* Set on target abort */
57 #define  PCI_STATUS_REC_TARGET_ABORT	0x1000 /* Master ack of " */
58 #define  PCI_STATUS_REC_MASTER_ABORT	0x2000 /* Set on master abort */
59 #define  PCI_STATUS_SIG_SYSTEM_ERROR	0x4000 /* Set when we drive SERR */
60 #define  PCI_STATUS_DETECTED_PARITY	0x8000 /* Set on parity error */
61 
62 #define PCI_CLASS_REVISION	0x08	/* High 24 bits are class, low 8 revision */
63 #define PCI_REVISION_ID		0x08	/* Revision ID */
64 #define PCI_CLASS_PROG		0x09	/* Reg. Level Programming Interface */
65 #define PCI_CLASS_DEVICE	0x0a	/* Device class */
66 
67 #define PCI_CACHE_LINE_SIZE	0x0c	/* 8 bits */
68 #define PCI_LATENCY_TIMER	0x0d	/* 8 bits */
69 #define PCI_HEADER_TYPE		0x0e	/* 8 bits */
70 #define  PCI_HEADER_TYPE_NORMAL		0
71 #define  PCI_HEADER_TYPE_BRIDGE		1
72 #define  PCI_HEADER_TYPE_CARDBUS	2
73 
74 #define PCI_BIST		0x0f	/* 8 bits */
75 #define  PCI_BIST_CODE_MASK	0x0f	/* Return result */
76 #define  PCI_BIST_START		0x40	/* 1 to start BIST, 2 secs or less */
77 #define  PCI_BIST_CAPABLE	0x80	/* 1 if BIST capable */
78 
79 /*
80  * Base addresses specify locations in memory or I/O space.
81  * Decoded size can be determined by writing a value of
82  * 0xffffffff to the register, and reading it back.  Only
83  * 1 bits are decoded.
84  */
85 #define PCI_BASE_ADDRESS_0	0x10	/* 32 bits */
86 #define PCI_BASE_ADDRESS_1	0x14	/* 32 bits [htype 0,1 only] */
87 #define PCI_BASE_ADDRESS_2	0x18	/* 32 bits [htype 0 only] */
88 #define PCI_BASE_ADDRESS_3	0x1c	/* 32 bits */
89 #define PCI_BASE_ADDRESS_4	0x20	/* 32 bits */
90 #define PCI_BASE_ADDRESS_5	0x24	/* 32 bits */
91 #define  PCI_BASE_ADDRESS_SPACE		0x01	/* 0 = memory, 1 = I/O */
92 #define  PCI_BASE_ADDRESS_SPACE_IO	0x01
93 #define  PCI_BASE_ADDRESS_SPACE_MEMORY	0x00
94 #define  PCI_BASE_ADDRESS_MEM_TYPE_MASK	0x06
95 #define  PCI_BASE_ADDRESS_MEM_TYPE_32	0x00	/* 32 bit address */
96 #define  PCI_BASE_ADDRESS_MEM_TYPE_1M	0x02	/* Below 1M [obsolete] */
97 #define  PCI_BASE_ADDRESS_MEM_TYPE_64	0x04	/* 64 bit address */
98 #define  PCI_BASE_ADDRESS_MEM_PREFETCH	0x08	/* prefetchable? */
99 #define  PCI_BASE_ADDRESS_MEM_MASK	(~0x0fUL)
100 #define  PCI_BASE_ADDRESS_IO_MASK	(~0x03UL)
101 /* bit 1 is reserved if address_space = 1 */
102 
103 /* Header type 0 (normal devices) */
104 #define PCI_CARDBUS_CIS		0x28
105 #define PCI_SUBSYSTEM_VENDOR_ID	0x2c
106 #define PCI_SUBSYSTEM_ID	0x2e
107 #define PCI_ROM_ADDRESS		0x30	/* Bits 31..11 are address, 10..1 reserved */
108 #define  PCI_ROM_ADDRESS_ENABLE	0x01
109 #define PCI_ROM_ADDRESS_MASK	(~0x7ffUL)
110 
111 #define PCI_CAPABILITY_LIST	0x34	/* Offset of first capability list entry */
112 
113 /* 0x35-0x3b are reserved */
114 #define PCI_INTERRUPT_LINE	0x3c	/* 8 bits */
115 #define PCI_INTERRUPT_PIN	0x3d	/* 8 bits */
116 #define PCI_MIN_GNT		0x3e	/* 8 bits */
117 #define PCI_MAX_LAT		0x3f	/* 8 bits */
118 
119 /* Header type 1 (PCI-to-PCI bridges) */
120 #define PCI_PRIMARY_BUS		0x18	/* Primary bus number */
121 #define PCI_SECONDARY_BUS	0x19	/* Secondary bus number */
122 #define PCI_SUBORDINATE_BUS	0x1a	/* Highest bus number behind the bridge */
123 #define PCI_SEC_LATENCY_TIMER	0x1b	/* Latency timer for secondary interface */
124 #define PCI_IO_BASE		0x1c	/* I/O range behind the bridge */
125 #define PCI_IO_LIMIT		0x1d
126 #define  PCI_IO_RANGE_TYPE_MASK	0x0fUL	/* I/O bridging type */
127 #define  PCI_IO_RANGE_TYPE_16	0x00
128 #define  PCI_IO_RANGE_TYPE_32	0x01
129 #define  PCI_IO_RANGE_MASK	(~0x0fUL) /* Standard 4K I/O windows */
130 #define  PCI_IO_1K_RANGE_MASK	(~0x03UL) /* Intel 1K I/O windows */
131 #define PCI_SEC_STATUS		0x1e	/* Secondary status register, only bit 14 used */
132 #define PCI_MEMORY_BASE		0x20	/* Memory range behind */
133 #define PCI_MEMORY_LIMIT	0x22
134 #define  PCI_MEMORY_RANGE_TYPE_MASK 0x0fUL
135 #define  PCI_MEMORY_RANGE_MASK	(~0x0fUL)
136 #define PCI_PREF_MEMORY_BASE	0x24	/* Prefetchable memory range behind */
137 #define PCI_PREF_MEMORY_LIMIT	0x26
138 #define  PCI_PREF_RANGE_TYPE_MASK 0x0fUL
139 #define  PCI_PREF_RANGE_TYPE_32	0x00
140 #define  PCI_PREF_RANGE_TYPE_64	0x01
141 #define  PCI_PREF_RANGE_MASK	(~0x0fUL)
142 #define PCI_PREF_BASE_UPPER32	0x28	/* Upper half of prefetchable memory range */
143 #define PCI_PREF_LIMIT_UPPER32	0x2c
144 #define PCI_IO_BASE_UPPER16	0x30	/* Upper half of I/O addresses */
145 #define PCI_IO_LIMIT_UPPER16	0x32
146 /* 0x34 same as for htype 0 */
147 /* 0x35-0x3b is reserved */
148 #define PCI_ROM_ADDRESS1	0x38	/* Same as PCI_ROM_ADDRESS, but for htype 1 */
149 /* 0x3c-0x3d are same as for htype 0 */
150 #define PCI_BRIDGE_CONTROL	0x3e
151 #define  PCI_BRIDGE_CTL_PARITY	0x01	/* Enable parity detection on secondary interface */
152 #define  PCI_BRIDGE_CTL_SERR	0x02	/* The same for SERR forwarding */
153 #define  PCI_BRIDGE_CTL_ISA	0x04	/* Enable ISA mode */
154 #define  PCI_BRIDGE_CTL_VGA	0x08	/* Forward VGA addresses */
155 #define  PCI_BRIDGE_CTL_MASTER_ABORT	0x20  /* Report master aborts */
156 #define  PCI_BRIDGE_CTL_BUS_RESET	0x40	/* Secondary bus reset */
157 #define  PCI_BRIDGE_CTL_FAST_BACK	0x80	/* Fast Back2Back enabled on secondary interface */
158 
159 /* Header type 2 (CardBus bridges) */
160 #define PCI_CB_CAPABILITY_LIST	0x14
161 /* 0x15 reserved */
162 #define PCI_CB_SEC_STATUS	0x16	/* Secondary status */
163 #define PCI_CB_PRIMARY_BUS	0x18	/* PCI bus number */
164 #define PCI_CB_CARD_BUS		0x19	/* CardBus bus number */
165 #define PCI_CB_SUBORDINATE_BUS	0x1a	/* Subordinate bus number */
166 #define PCI_CB_LATENCY_TIMER	0x1b	/* CardBus latency timer */
167 #define PCI_CB_MEMORY_BASE_0	0x1c
168 #define PCI_CB_MEMORY_LIMIT_0	0x20
169 #define PCI_CB_MEMORY_BASE_1	0x24
170 #define PCI_CB_MEMORY_LIMIT_1	0x28
171 #define PCI_CB_IO_BASE_0	0x2c
172 #define PCI_CB_IO_BASE_0_HI	0x2e
173 #define PCI_CB_IO_LIMIT_0	0x30
174 #define PCI_CB_IO_LIMIT_0_HI	0x32
175 #define PCI_CB_IO_BASE_1	0x34
176 #define PCI_CB_IO_BASE_1_HI	0x36
177 #define PCI_CB_IO_LIMIT_1	0x38
178 #define PCI_CB_IO_LIMIT_1_HI	0x3a
179 #define  PCI_CB_IO_RANGE_MASK	(~0x03UL)
180 /* 0x3c-0x3d are same as for htype 0 */
181 #define PCI_CB_BRIDGE_CONTROL	0x3e
182 #define  PCI_CB_BRIDGE_CTL_PARITY	0x01	/* Similar to standard bridge control register */
183 #define  PCI_CB_BRIDGE_CTL_SERR		0x02
184 #define  PCI_CB_BRIDGE_CTL_ISA		0x04
185 #define  PCI_CB_BRIDGE_CTL_VGA		0x08
186 #define  PCI_CB_BRIDGE_CTL_MASTER_ABORT	0x20
187 #define  PCI_CB_BRIDGE_CTL_CB_RESET	0x40	/* CardBus reset */
188 #define  PCI_CB_BRIDGE_CTL_16BIT_INT	0x80	/* Enable interrupt for 16-bit cards */
189 #define  PCI_CB_BRIDGE_CTL_PREFETCH_MEM0 0x100	/* Prefetch enable for both memory regions */
190 #define  PCI_CB_BRIDGE_CTL_PREFETCH_MEM1 0x200
191 #define  PCI_CB_BRIDGE_CTL_POST_WRITES	0x400
192 #define PCI_CB_SUBSYSTEM_VENDOR_ID	0x40
193 #define PCI_CB_SUBSYSTEM_ID		0x42
194 #define PCI_CB_LEGACY_MODE_BASE		0x44	/* 16-bit PC Card legacy mode base address (ExCa) */
195 /* 0x48-0x7f reserved */
196 
197 /* Capability lists */
198 
199 #define PCI_CAP_LIST_ID		0	/* Capability ID */
200 #define  PCI_CAP_ID_PM		0x01	/* Power Management */
201 #define  PCI_CAP_ID_AGP		0x02	/* Accelerated Graphics Port */
202 #define  PCI_CAP_ID_VPD		0x03	/* Vital Product Data */
203 #define  PCI_CAP_ID_SLOTID	0x04	/* Slot Identification */
204 #define  PCI_CAP_ID_MSI		0x05	/* Message Signalled Interrupts */
205 #define  PCI_CAP_ID_CHSWP	0x06	/* CompactPCI HotSwap */
206 #define  PCI_CAP_ID_PCIX	0x07	/* PCI-X */
207 #define  PCI_CAP_ID_HT		0x08	/* HyperTransport */
208 #define  PCI_CAP_ID_VNDR	0x09	/* Vendor-Specific */
209 #define  PCI_CAP_ID_DBG		0x0A	/* Debug port */
210 #define  PCI_CAP_ID_CCRC	0x0B	/* CompactPCI Central Resource Control */
211 #define  PCI_CAP_ID_SHPC	0x0C	/* PCI Standard Hot-Plug Controller */
212 #define  PCI_CAP_ID_SSVID	0x0D	/* Bridge subsystem vendor/device ID */
213 #define  PCI_CAP_ID_AGP3	0x0E	/* AGP Target PCI-PCI bridge */
214 #define  PCI_CAP_ID_SECDEV	0x0F	/* Secure Device */
215 #define  PCI_CAP_ID_EXP		0x10	/* PCI Express */
216 #define  PCI_CAP_ID_MSIX	0x11	/* MSI-X */
217 #define  PCI_CAP_ID_SATA	0x12	/* SATA Data/Index Conf. */
218 #define  PCI_CAP_ID_AF		0x13	/* PCI Advanced Features */
219 #define  PCI_CAP_ID_MAX		PCI_CAP_ID_AF
220 #define PCI_CAP_LIST_NEXT	1	/* Next capability in the list */
221 #define PCI_CAP_FLAGS		2	/* Capability defined flags (16 bits) */
222 #define PCI_CAP_SIZEOF		4
223 
224 /* Power Management Registers */
225 
226 #define PCI_PM_PMC		2	/* PM Capabilities Register */
227 #define  PCI_PM_CAP_VER_MASK	0x0007	/* Version */
228 #define  PCI_PM_CAP_PME_CLOCK	0x0008	/* PME clock required */
229 #define  PCI_PM_CAP_RESERVED    0x0010  /* Reserved field */
230 #define  PCI_PM_CAP_DSI		0x0020	/* Device specific initialization */
231 #define  PCI_PM_CAP_AUX_POWER	0x01C0	/* Auxiliary power support mask */
232 #define  PCI_PM_CAP_D1		0x0200	/* D1 power state support */
233 #define  PCI_PM_CAP_D2		0x0400	/* D2 power state support */
234 #define  PCI_PM_CAP_PME		0x0800	/* PME pin supported */
235 #define  PCI_PM_CAP_PME_MASK	0xF800	/* PME Mask of all supported states */
236 #define  PCI_PM_CAP_PME_D0	0x0800	/* PME# from D0 */
237 #define  PCI_PM_CAP_PME_D1	0x1000	/* PME# from D1 */
238 #define  PCI_PM_CAP_PME_D2	0x2000	/* PME# from D2 */
239 #define  PCI_PM_CAP_PME_D3	0x4000	/* PME# from D3 (hot) */
240 #define  PCI_PM_CAP_PME_D3cold	0x8000	/* PME# from D3 (cold) */
241 #define  PCI_PM_CAP_PME_SHIFT	11	/* Start of the PME Mask in PMC */
242 #define PCI_PM_CTRL		4	/* PM control and status register */
243 #define  PCI_PM_CTRL_STATE_MASK	0x0003	/* Current power state (D0 to D3) */
244 #define  PCI_PM_CTRL_NO_SOFT_RESET	0x0008	/* No reset for D3hot->D0 */
245 #define  PCI_PM_CTRL_PME_ENABLE	0x0100	/* PME pin enable */
246 #define  PCI_PM_CTRL_DATA_SEL_MASK	0x1e00	/* Data select (??) */
247 #define  PCI_PM_CTRL_DATA_SCALE_MASK	0x6000	/* Data scale (??) */
248 #define  PCI_PM_CTRL_PME_STATUS	0x8000	/* PME pin status */
249 #define PCI_PM_PPB_EXTENSIONS	6	/* PPB support extensions (??) */
250 #define  PCI_PM_PPB_B2_B3	0x40	/* Stop clock when in D3hot (??) */
251 #define  PCI_PM_BPCC_ENABLE	0x80	/* Bus power/clock control enable (??) */
252 #define PCI_PM_DATA_REGISTER	7	/* (??) */
253 #define PCI_PM_SIZEOF		8
254 
255 /* AGP registers */
256 
257 #define PCI_AGP_VERSION		2	/* BCD version number */
258 #define PCI_AGP_RFU		3	/* Rest of capability flags */
259 #define PCI_AGP_STATUS		4	/* Status register */
260 #define  PCI_AGP_STATUS_RQ_MASK	0xff000000	/* Maximum number of requests - 1 */
261 #define  PCI_AGP_STATUS_SBA	0x0200	/* Sideband addressing supported */
262 #define  PCI_AGP_STATUS_64BIT	0x0020	/* 64-bit addressing supported */
263 #define  PCI_AGP_STATUS_FW	0x0010	/* FW transfers supported */
264 #define  PCI_AGP_STATUS_RATE4	0x0004	/* 4x transfer rate supported */
265 #define  PCI_AGP_STATUS_RATE2	0x0002	/* 2x transfer rate supported */
266 #define  PCI_AGP_STATUS_RATE1	0x0001	/* 1x transfer rate supported */
267 #define PCI_AGP_COMMAND		8	/* Control register */
268 #define  PCI_AGP_COMMAND_RQ_MASK 0xff000000  /* Master: Maximum number of requests */
269 #define  PCI_AGP_COMMAND_SBA	0x0200	/* Sideband addressing enabled */
270 #define  PCI_AGP_COMMAND_AGP	0x0100	/* Allow processing of AGP transactions */
271 #define  PCI_AGP_COMMAND_64BIT	0x0020	/* Allow processing of 64-bit addresses */
272 #define  PCI_AGP_COMMAND_FW	0x0010	/* Force FW transfers */
273 #define  PCI_AGP_COMMAND_RATE4	0x0004	/* Use 4x rate */
274 #define  PCI_AGP_COMMAND_RATE2	0x0002	/* Use 2x rate */
275 #define  PCI_AGP_COMMAND_RATE1	0x0001	/* Use 1x rate */
276 #define PCI_AGP_SIZEOF		12
277 
278 /* Vital Product Data */
279 
280 #define PCI_VPD_ADDR		2	/* Address to access (15 bits!) */
281 #define  PCI_VPD_ADDR_MASK	0x7fff	/* Address mask */
282 #define  PCI_VPD_ADDR_F		0x8000	/* Write 0, 1 indicates completion */
283 #define PCI_VPD_DATA		4	/* 32-bits of data returned here */
284 #define PCI_CAP_VPD_SIZEOF	8
285 
286 /* Slot Identification */
287 
288 #define PCI_SID_ESR		2	/* Expansion Slot Register */
289 #define  PCI_SID_ESR_NSLOTS	0x1f	/* Number of expansion slots available */
290 #define  PCI_SID_ESR_FIC	0x20	/* First In Chassis Flag */
291 #define PCI_SID_CHASSIS_NR	3	/* Chassis Number */
292 
293 /* Message Signalled Interrupts registers */
294 
295 #define PCI_MSI_FLAGS		2	/* Message Control */
296 #define  PCI_MSI_FLAGS_ENABLE	0x0001	/* MSI feature enabled */
297 #define  PCI_MSI_FLAGS_QMASK	0x000e	/* Maximum queue size available */
298 #define  PCI_MSI_FLAGS_QSIZE	0x0070	/* Message queue size configured */
299 #define  PCI_MSI_FLAGS_64BIT	0x0080	/* 64-bit addresses allowed */
300 #define  PCI_MSI_FLAGS_MASKBIT	0x0100	/* Per-vector masking capable */
301 #define PCI_MSI_RFU		3	/* Rest of capability flags */
302 #define PCI_MSI_ADDRESS_LO	4	/* Lower 32 bits */
303 #define PCI_MSI_ADDRESS_HI	8	/* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */
304 #define PCI_MSI_DATA_32		8	/* 16 bits of data for 32-bit devices */
305 #define PCI_MSI_MASK_32		12	/* Mask bits register for 32-bit devices */
306 #define PCI_MSI_PENDING_32	16	/* Pending intrs for 32-bit devices */
307 #define PCI_MSI_DATA_64		12	/* 16 bits of data for 64-bit devices */
308 #define PCI_MSI_MASK_64		16	/* Mask bits register for 64-bit devices */
309 #define PCI_MSI_PENDING_64	20	/* Pending intrs for 64-bit devices */
310 
311 /* MSI-X registers */
312 #define PCI_MSIX_FLAGS		2	/* Message Control */
313 #define  PCI_MSIX_FLAGS_QSIZE	0x07FF	/* Table size */
314 #define  PCI_MSIX_FLAGS_MASKALL	0x4000	/* Mask all vectors for this function */
315 #define  PCI_MSIX_FLAGS_ENABLE	0x8000	/* MSI-X enable */
316 #define PCI_MSIX_TABLE		4	/* Table offset */
317 #define  PCI_MSIX_TABLE_BIR	0x00000007 /* BAR index */
318 #define  PCI_MSIX_TABLE_OFFSET	0xfffffff8 /* Offset into specified BAR */
319 #define PCI_MSIX_PBA		8	/* Pending Bit Array offset */
320 #define  PCI_MSIX_PBA_BIR	0x00000007 /* BAR index */
321 #define  PCI_MSIX_PBA_OFFSET	0xfffffff8 /* Offset into specified BAR */
322 #define PCI_CAP_MSIX_SIZEOF	12	/* size of MSIX registers */
323 
324 /* MSI-X Table entry format */
325 #define PCI_MSIX_ENTRY_SIZE		16
326 #define  PCI_MSIX_ENTRY_LOWER_ADDR	0
327 #define  PCI_MSIX_ENTRY_UPPER_ADDR	4
328 #define  PCI_MSIX_ENTRY_DATA		8
329 #define  PCI_MSIX_ENTRY_VECTOR_CTRL	12
330 #define   PCI_MSIX_ENTRY_CTRL_MASKBIT	1
331 
332 /* CompactPCI Hotswap Register */
333 
334 #define PCI_CHSWP_CSR		2	/* Control and Status Register */
335 #define  PCI_CHSWP_DHA		0x01	/* Device Hiding Arm */
336 #define  PCI_CHSWP_EIM		0x02	/* ENUM# Signal Mask */
337 #define  PCI_CHSWP_PIE		0x04	/* Pending Insert or Extract */
338 #define  PCI_CHSWP_LOO		0x08	/* LED On / Off */
339 #define  PCI_CHSWP_PI		0x30	/* Programming Interface */
340 #define  PCI_CHSWP_EXT		0x40	/* ENUM# status - extraction */
341 #define  PCI_CHSWP_INS		0x80	/* ENUM# status - insertion */
342 
343 /* PCI Advanced Feature registers */
344 
345 #define PCI_AF_LENGTH		2
346 #define PCI_AF_CAP		3
347 #define  PCI_AF_CAP_TP		0x01
348 #define  PCI_AF_CAP_FLR		0x02
349 #define PCI_AF_CTRL		4
350 #define  PCI_AF_CTRL_FLR	0x01
351 #define PCI_AF_STATUS		5
352 #define  PCI_AF_STATUS_TP	0x01
353 #define PCI_CAP_AF_SIZEOF	6	/* size of AF registers */
354 
355 /* PCI-X registers (Type 0 (non-bridge) devices) */
356 
357 #define PCI_X_CMD		2	/* Modes & Features */
358 #define  PCI_X_CMD_DPERR_E	0x0001	/* Data Parity Error Recovery Enable */
359 #define  PCI_X_CMD_ERO		0x0002	/* Enable Relaxed Ordering */
360 #define  PCI_X_CMD_READ_512	0x0000	/* 512 byte maximum read byte count */
361 #define  PCI_X_CMD_READ_1K	0x0004	/* 1Kbyte maximum read byte count */
362 #define  PCI_X_CMD_READ_2K	0x0008	/* 2Kbyte maximum read byte count */
363 #define  PCI_X_CMD_READ_4K	0x000c	/* 4Kbyte maximum read byte count */
364 #define  PCI_X_CMD_MAX_READ	0x000c	/* Max Memory Read Byte Count */
365 				/* Max # of outstanding split transactions */
366 #define  PCI_X_CMD_SPLIT_1	0x0000	/* Max 1 */
367 #define  PCI_X_CMD_SPLIT_2	0x0010	/* Max 2 */
368 #define  PCI_X_CMD_SPLIT_3	0x0020	/* Max 3 */
369 #define  PCI_X_CMD_SPLIT_4	0x0030	/* Max 4 */
370 #define  PCI_X_CMD_SPLIT_8	0x0040	/* Max 8 */
371 #define  PCI_X_CMD_SPLIT_12	0x0050	/* Max 12 */
372 #define  PCI_X_CMD_SPLIT_16	0x0060	/* Max 16 */
373 #define  PCI_X_CMD_SPLIT_32	0x0070	/* Max 32 */
374 #define  PCI_X_CMD_MAX_SPLIT	0x0070	/* Max Outstanding Split Transactions */
375 #define  PCI_X_CMD_VERSION(x)	(((x) >> 12) & 3) /* Version */
376 #define PCI_X_STATUS		4	/* PCI-X capabilities */
377 #define  PCI_X_STATUS_DEVFN	0x000000ff	/* A copy of devfn */
378 #define  PCI_X_STATUS_BUS	0x0000ff00	/* A copy of bus nr */
379 #define  PCI_X_STATUS_64BIT	0x00010000	/* 64-bit device */
380 #define  PCI_X_STATUS_133MHZ	0x00020000	/* 133 MHz capable */
381 #define  PCI_X_STATUS_SPL_DISC	0x00040000	/* Split Completion Discarded */
382 #define  PCI_X_STATUS_UNX_SPL	0x00080000	/* Unexpected Split Completion */
383 #define  PCI_X_STATUS_COMPLEX	0x00100000	/* Device Complexity */
384 #define  PCI_X_STATUS_MAX_READ	0x00600000	/* Designed Max Memory Read Count */
385 #define  PCI_X_STATUS_MAX_SPLIT	0x03800000	/* Designed Max Outstanding Split Transactions */
386 #define  PCI_X_STATUS_MAX_CUM	0x1c000000	/* Designed Max Cumulative Read Size */
387 #define  PCI_X_STATUS_SPL_ERR	0x20000000	/* Rcvd Split Completion Error Msg */
388 #define  PCI_X_STATUS_266MHZ	0x40000000	/* 266 MHz capable */
389 #define  PCI_X_STATUS_533MHZ	0x80000000	/* 533 MHz capable */
390 #define PCI_X_ECC_CSR		8	/* ECC control and status */
391 #define PCI_CAP_PCIX_SIZEOF_V0	8	/* size of registers for Version 0 */
392 #define PCI_CAP_PCIX_SIZEOF_V1	24	/* size for Version 1 */
393 #define PCI_CAP_PCIX_SIZEOF_V2	PCI_CAP_PCIX_SIZEOF_V1	/* Same for v2 */
394 
395 /* PCI-X registers (Type 1 (bridge) devices) */
396 
397 #define PCI_X_BRIDGE_SSTATUS	2	/* Secondary Status */
398 #define  PCI_X_SSTATUS_64BIT	0x0001	/* Secondary AD interface is 64 bits */
399 #define  PCI_X_SSTATUS_133MHZ	0x0002	/* 133 MHz capable */
400 #define  PCI_X_SSTATUS_FREQ	0x03c0	/* Secondary Bus Mode and Frequency */
401 #define  PCI_X_SSTATUS_VERS	0x3000	/* PCI-X Capability Version */
402 #define  PCI_X_SSTATUS_V1	0x1000	/* Mode 2, not Mode 1 */
403 #define  PCI_X_SSTATUS_V2	0x2000	/* Mode 1 or Modes 1 and 2 */
404 #define  PCI_X_SSTATUS_266MHZ	0x4000	/* 266 MHz capable */
405 #define  PCI_X_SSTATUS_533MHZ	0x8000	/* 533 MHz capable */
406 #define PCI_X_BRIDGE_STATUS	4	/* Bridge Status */
407 
408 /* PCI Bridge Subsystem ID registers */
409 
410 #define PCI_SSVID_VENDOR_ID     4	/* PCI Bridge subsystem vendor ID */
411 #define PCI_SSVID_DEVICE_ID     6	/* PCI Bridge subsystem device ID */
412 
413 /* PCI Express capability registers */
414 
415 #define PCI_EXP_FLAGS		2	/* Capabilities register */
416 #define PCI_EXP_FLAGS_VERS	0x000f	/* Capability version */
417 #define PCI_EXP_FLAGS_TYPE	0x00f0	/* Device/Port type */
418 #define  PCI_EXP_TYPE_ENDPOINT	0x0	/* Express Endpoint */
419 #define  PCI_EXP_TYPE_LEG_END	0x1	/* Legacy Endpoint */
420 #define  PCI_EXP_TYPE_ROOT_PORT 0x4	/* Root Port */
421 #define  PCI_EXP_TYPE_UPSTREAM	0x5	/* Upstream Port */
422 #define  PCI_EXP_TYPE_DOWNSTREAM 0x6	/* Downstream Port */
423 #define  PCI_EXP_TYPE_PCI_BRIDGE 0x7	/* PCIe to PCI/PCI-X Bridge */
424 #define  PCI_EXP_TYPE_PCIE_BRIDGE 0x8	/* PCI/PCI-X to PCIe Bridge */
425 #define  PCI_EXP_TYPE_RC_END	0x9	/* Root Complex Integrated Endpoint */
426 #define  PCI_EXP_TYPE_RC_EC	0xa	/* Root Complex Event Collector */
427 #define PCI_EXP_FLAGS_SLOT	0x0100	/* Slot implemented */
428 #define PCI_EXP_FLAGS_IRQ	0x3e00	/* Interrupt message number */
429 #define PCI_EXP_DEVCAP		4	/* Device capabilities */
430 #define  PCI_EXP_DEVCAP_PAYLOAD	0x00000007 /* Max_Payload_Size */
431 #define  PCI_EXP_DEVCAP_PHANTOM	0x00000018 /* Phantom functions */
432 #define  PCI_EXP_DEVCAP_EXT_TAG	0x00000020 /* Extended tags */
433 #define  PCI_EXP_DEVCAP_L0S	0x000001c0 /* L0s Acceptable Latency */
434 #define  PCI_EXP_DEVCAP_L1	0x00000e00 /* L1 Acceptable Latency */
435 #define  PCI_EXP_DEVCAP_ATN_BUT	0x00001000 /* Attention Button Present */
436 #define  PCI_EXP_DEVCAP_ATN_IND	0x00002000 /* Attention Indicator Present */
437 #define  PCI_EXP_DEVCAP_PWR_IND	0x00004000 /* Power Indicator Present */
438 #define  PCI_EXP_DEVCAP_RBER	0x00008000 /* Role-Based Error Reporting */
439 #define  PCI_EXP_DEVCAP_PWR_VAL	0x03fc0000 /* Slot Power Limit Value */
440 #define  PCI_EXP_DEVCAP_PWR_SCL	0x0c000000 /* Slot Power Limit Scale */
441 #define  PCI_EXP_DEVCAP_FLR     0x10000000 /* Function Level Reset */
442 #define PCI_EXP_DEVCTL		8	/* Device Control */
443 #define  PCI_EXP_DEVCTL_CERE	0x0001	/* Correctable Error Reporting En. */
444 #define  PCI_EXP_DEVCTL_NFERE	0x0002	/* Non-Fatal Error Reporting Enable */
445 #define  PCI_EXP_DEVCTL_FERE	0x0004	/* Fatal Error Reporting Enable */
446 #define  PCI_EXP_DEVCTL_URRE	0x0008	/* Unsupported Request Reporting En. */
447 #define  PCI_EXP_DEVCTL_RELAX_EN 0x0010 /* Enable relaxed ordering */
448 #define  PCI_EXP_DEVCTL_PAYLOAD	0x00e0	/* Max_Payload_Size */
449 #define  PCI_EXP_DEVCTL_EXT_TAG	0x0100	/* Extended Tag Field Enable */
450 #define  PCI_EXP_DEVCTL_PHANTOM	0x0200	/* Phantom Functions Enable */
451 #define  PCI_EXP_DEVCTL_AUX_PME	0x0400	/* Auxiliary Power PM Enable */
452 #define  PCI_EXP_DEVCTL_NOSNOOP_EN 0x0800  /* Enable No Snoop */
453 #define  PCI_EXP_DEVCTL_READRQ	0x7000	/* Max_Read_Request_Size */
454 #define  PCI_EXP_DEVCTL_BCR_FLR 0x8000  /* Bridge Configuration Retry / FLR */
455 #define PCI_EXP_DEVSTA		10	/* Device Status */
456 #define  PCI_EXP_DEVSTA_CED	0x0001	/* Correctable Error Detected */
457 #define  PCI_EXP_DEVSTA_NFED	0x0002	/* Non-Fatal Error Detected */
458 #define  PCI_EXP_DEVSTA_FED	0x0004	/* Fatal Error Detected */
459 #define  PCI_EXP_DEVSTA_URD	0x0008	/* Unsupported Request Detected */
460 #define  PCI_EXP_DEVSTA_AUXPD	0x0010	/* AUX Power Detected */
461 #define  PCI_EXP_DEVSTA_TRPND	0x0020	/* Transactions Pending */
462 #define PCI_EXP_LNKCAP		12	/* Link Capabilities */
463 #define  PCI_EXP_LNKCAP_SLS	0x0000000f /* Supported Link Speeds */
464 #define  PCI_EXP_LNKCAP_SLS_2_5GB 0x00000001 /* LNKCAP2 SLS Vector bit 0 */
465 #define  PCI_EXP_LNKCAP_SLS_5_0GB 0x00000002 /* LNKCAP2 SLS Vector bit 1 */
466 #define  PCI_EXP_LNKCAP_MLW	0x000003f0 /* Maximum Link Width */
467 #define  PCI_EXP_LNKCAP_ASPMS	0x00000c00 /* ASPM Support */
468 #define  PCI_EXP_LNKCAP_L0SEL	0x00007000 /* L0s Exit Latency */
469 #define  PCI_EXP_LNKCAP_L1EL	0x00038000 /* L1 Exit Latency */
470 #define  PCI_EXP_LNKCAP_CLKPM	0x00040000 /* Clock Power Management */
471 #define  PCI_EXP_LNKCAP_SDERC	0x00080000 /* Surprise Down Error Reporting Capable */
472 #define  PCI_EXP_LNKCAP_DLLLARC	0x00100000 /* Data Link Layer Link Active Reporting Capable */
473 #define  PCI_EXP_LNKCAP_LBNC	0x00200000 /* Link Bandwidth Notification Capability */
474 #define  PCI_EXP_LNKCAP_PN	0xff000000 /* Port Number */
475 #define PCI_EXP_LNKCTL		16	/* Link Control */
476 #define  PCI_EXP_LNKCTL_ASPMC	0x0003	/* ASPM Control */
477 #define  PCI_EXP_LNKCTL_ASPM_L0S 0x0001	/* L0s Enable */
478 #define  PCI_EXP_LNKCTL_ASPM_L1  0x0002	/* L1 Enable */
479 #define  PCI_EXP_LNKCTL_RCB	0x0008	/* Read Completion Boundary */
480 #define  PCI_EXP_LNKCTL_LD	0x0010	/* Link Disable */
481 #define  PCI_EXP_LNKCTL_RL	0x0020	/* Retrain Link */
482 #define  PCI_EXP_LNKCTL_CCC	0x0040	/* Common Clock Configuration */
483 #define  PCI_EXP_LNKCTL_ES	0x0080	/* Extended Synch */
484 #define  PCI_EXP_LNKCTL_CLKREQ_EN 0x0100 /* Enable clkreq */
485 #define  PCI_EXP_LNKCTL_HAWD	0x0200	/* Hardware Autonomous Width Disable */
486 #define  PCI_EXP_LNKCTL_LBMIE	0x0400	/* Link Bandwidth Management Interrupt Enable */
487 #define  PCI_EXP_LNKCTL_LABIE	0x0800	/* Link Autonomous Bandwidth Interrupt Enable */
488 #define PCI_EXP_LNKSTA		18	/* Link Status */
489 #define  PCI_EXP_LNKSTA_CLS	0x000f	/* Current Link Speed */
490 #define  PCI_EXP_LNKSTA_CLS_2_5GB 0x0001 /* Current Link Speed 2.5GT/s */
491 #define  PCI_EXP_LNKSTA_CLS_5_0GB 0x0002 /* Current Link Speed 5.0GT/s */
492 #define  PCI_EXP_LNKSTA_CLS_8_0GB 0x0003 /* Current Link Speed 8.0GT/s */
493 #define  PCI_EXP_LNKSTA_NLW	0x03f0	/* Negotiated Link Width */
494 #define  PCI_EXP_LNKSTA_NLW_X1	0x0010	/* Current Link Width x1 */
495 #define  PCI_EXP_LNKSTA_NLW_X2	0x0020	/* Current Link Width x2 */
496 #define  PCI_EXP_LNKSTA_NLW_X4	0x0040	/* Current Link Width x4 */
497 #define  PCI_EXP_LNKSTA_NLW_X8	0x0080	/* Current Link Width x8 */
498 #define  PCI_EXP_LNKSTA_NLW_SHIFT 4	/* start of NLW mask in link status */
499 #define  PCI_EXP_LNKSTA_LT	0x0800	/* Link Training */
500 #define  PCI_EXP_LNKSTA_SLC	0x1000	/* Slot Clock Configuration */
501 #define  PCI_EXP_LNKSTA_DLLLA	0x2000	/* Data Link Layer Link Active */
502 #define  PCI_EXP_LNKSTA_LBMS	0x4000	/* Link Bandwidth Management Status */
503 #define  PCI_EXP_LNKSTA_LABS	0x8000	/* Link Autonomous Bandwidth Status */
504 #define PCI_CAP_EXP_ENDPOINT_SIZEOF_V1	20	/* v1 endpoints end here */
505 #define PCI_EXP_SLTCAP		20	/* Slot Capabilities */
506 #define  PCI_EXP_SLTCAP_ABP	0x00000001 /* Attention Button Present */
507 #define  PCI_EXP_SLTCAP_PCP	0x00000002 /* Power Controller Present */
508 #define  PCI_EXP_SLTCAP_MRLSP	0x00000004 /* MRL Sensor Present */
509 #define  PCI_EXP_SLTCAP_AIP	0x00000008 /* Attention Indicator Present */
510 #define  PCI_EXP_SLTCAP_PIP	0x00000010 /* Power Indicator Present */
511 #define  PCI_EXP_SLTCAP_HPS	0x00000020 /* Hot-Plug Surprise */
512 #define  PCI_EXP_SLTCAP_HPC	0x00000040 /* Hot-Plug Capable */
513 #define  PCI_EXP_SLTCAP_SPLV	0x00007f80 /* Slot Power Limit Value */
514 #define  PCI_EXP_SLTCAP_SPLS	0x00018000 /* Slot Power Limit Scale */
515 #define  PCI_EXP_SLTCAP_EIP	0x00020000 /* Electromechanical Interlock Present */
516 #define  PCI_EXP_SLTCAP_NCCS	0x00040000 /* No Command Completed Support */
517 #define  PCI_EXP_SLTCAP_PSN	0xfff80000 /* Physical Slot Number */
518 #define PCI_EXP_SLTCTL		24	/* Slot Control */
519 #define  PCI_EXP_SLTCTL_ABPE	0x0001	/* Attention Button Pressed Enable */
520 #define  PCI_EXP_SLTCTL_PFDE	0x0002	/* Power Fault Detected Enable */
521 #define  PCI_EXP_SLTCTL_MRLSCE	0x0004	/* MRL Sensor Changed Enable */
522 #define  PCI_EXP_SLTCTL_PDCE	0x0008	/* Presence Detect Changed Enable */
523 #define  PCI_EXP_SLTCTL_CCIE	0x0010	/* Command Completed Interrupt Enable */
524 #define  PCI_EXP_SLTCTL_HPIE	0x0020	/* Hot-Plug Interrupt Enable */
525 #define  PCI_EXP_SLTCTL_AIC	0x00c0	/* Attention Indicator Control */
526 #define  PCI_EXP_SLTCTL_ATTN_IND_ON    0x0040 /* Attention Indicator on */
527 #define  PCI_EXP_SLTCTL_ATTN_IND_BLINK 0x0080 /* Attention Indicator blinking */
528 #define  PCI_EXP_SLTCTL_ATTN_IND_OFF   0x00c0 /* Attention Indicator off */
529 #define  PCI_EXP_SLTCTL_PIC	0x0300	/* Power Indicator Control */
530 #define  PCI_EXP_SLTCTL_PWR_IND_ON     0x0100 /* Power Indicator on */
531 #define  PCI_EXP_SLTCTL_PWR_IND_BLINK  0x0200 /* Power Indicator blinking */
532 #define  PCI_EXP_SLTCTL_PWR_IND_OFF    0x0300 /* Power Indicator off */
533 #define  PCI_EXP_SLTCTL_PCC	0x0400	/* Power Controller Control */
534 #define  PCI_EXP_SLTCTL_PWR_ON         0x0000 /* Power On */
535 #define  PCI_EXP_SLTCTL_PWR_OFF        0x0400 /* Power Off */
536 #define  PCI_EXP_SLTCTL_EIC	0x0800	/* Electromechanical Interlock Control */
537 #define  PCI_EXP_SLTCTL_DLLSCE	0x1000	/* Data Link Layer State Changed Enable */
538 #define PCI_EXP_SLTSTA		26	/* Slot Status */
539 #define  PCI_EXP_SLTSTA_ABP	0x0001	/* Attention Button Pressed */
540 #define  PCI_EXP_SLTSTA_PFD	0x0002	/* Power Fault Detected */
541 #define  PCI_EXP_SLTSTA_MRLSC	0x0004	/* MRL Sensor Changed */
542 #define  PCI_EXP_SLTSTA_PDC	0x0008	/* Presence Detect Changed */
543 #define  PCI_EXP_SLTSTA_CC	0x0010	/* Command Completed */
544 #define  PCI_EXP_SLTSTA_MRLSS	0x0020	/* MRL Sensor State */
545 #define  PCI_EXP_SLTSTA_PDS	0x0040	/* Presence Detect State */
546 #define  PCI_EXP_SLTSTA_EIS	0x0080	/* Electromechanical Interlock Status */
547 #define  PCI_EXP_SLTSTA_DLLSC	0x0100	/* Data Link Layer State Changed */
548 #define PCI_EXP_RTCTL		28	/* Root Control */
549 #define  PCI_EXP_RTCTL_SECEE	0x0001	/* System Error on Correctable Error */
550 #define  PCI_EXP_RTCTL_SENFEE	0x0002	/* System Error on Non-Fatal Error */
551 #define  PCI_EXP_RTCTL_SEFEE	0x0004	/* System Error on Fatal Error */
552 #define  PCI_EXP_RTCTL_PMEIE	0x0008	/* PME Interrupt Enable */
553 #define  PCI_EXP_RTCTL_CRSSVE	0x0010	/* CRS Software Visibility Enable */
554 #define PCI_EXP_RTCAP		30	/* Root Capabilities */
555 #define PCI_EXP_RTSTA		32	/* Root Status */
556 #define PCI_EXP_RTSTA_PME	0x00010000 /* PME status */
557 #define PCI_EXP_RTSTA_PENDING	0x00020000 /* PME pending */
558 /*
559  * The Device Capabilities 2, Device Status 2, Device Control 2,
560  * Link Capabilities 2, Link Status 2, Link Control 2,
561  * Slot Capabilities 2, Slot Status 2, and Slot Control 2 registers
562  * are only present on devices with PCIe Capability version 2.
563  * Use pcie_capability_read_word() and similar interfaces to use them
564  * safely.
565  */
566 #define PCI_EXP_DEVCAP2		36	/* Device Capabilities 2 */
567 #define  PCI_EXP_DEVCAP2_ARI		0x00000020 /* Alternative Routing-ID */
568 #define  PCI_EXP_DEVCAP2_LTR		0x00000800 /* Latency tolerance reporting */
569 #define  PCI_EXP_DEVCAP2_OBFF_MASK	0x000c0000 /* OBFF support mechanism */
570 #define  PCI_EXP_DEVCAP2_OBFF_MSG	0x00040000 /* New message signaling */
571 #define  PCI_EXP_DEVCAP2_OBFF_WAKE	0x00080000 /* Re-use WAKE# for OBFF */
572 #define PCI_EXP_DEVCTL2		40	/* Device Control 2 */
573 #define  PCI_EXP_DEVCTL2_COMP_TIMEOUT	0x000f	/* Completion Timeout Value */
574 #define  PCI_EXP_DEVCTL2_ARI		0x0020	/* Alternative Routing-ID */
575 #define  PCI_EXP_DEVCTL2_IDO_REQ_EN	0x0100	/* Allow IDO for requests */
576 #define  PCI_EXP_DEVCTL2_IDO_CMP_EN	0x0200	/* Allow IDO for completions */
577 #define  PCI_EXP_DEVCTL2_LTR_EN		0x0400	/* Enable LTR mechanism */
578 #define  PCI_EXP_DEVCTL2_OBFF_MSGA_EN	0x2000	/* Enable OBFF Message type A */
579 #define  PCI_EXP_DEVCTL2_OBFF_MSGB_EN	0x4000	/* Enable OBFF Message type B */
580 #define  PCI_EXP_DEVCTL2_OBFF_WAKE_EN	0x6000	/* OBFF using WAKE# signaling */
581 #define PCI_EXP_DEVSTA2		42	/* Device Status 2 */
582 #define PCI_CAP_EXP_ENDPOINT_SIZEOF_V2	44	/* v2 endpoints end here */
583 #define PCI_EXP_LNKCAP2		44	/* Link Capabilities 2 */
584 #define  PCI_EXP_LNKCAP2_SLS_2_5GB	0x00000002 /* Supported Speed 2.5GT/s */
585 #define  PCI_EXP_LNKCAP2_SLS_5_0GB	0x00000004 /* Supported Speed 5.0GT/s */
586 #define  PCI_EXP_LNKCAP2_SLS_8_0GB	0x00000008 /* Supported Speed 8.0GT/s */
587 #define  PCI_EXP_LNKCAP2_CROSSLINK	0x00000100 /* Crosslink supported */
588 #define PCI_EXP_LNKCTL2		48	/* Link Control 2 */
589 #define PCI_EXP_LNKSTA2		50	/* Link Status 2 */
590 #define PCI_EXP_SLTCAP2		52	/* Slot Capabilities 2 */
591 #define PCI_EXP_SLTCTL2		56	/* Slot Control 2 */
592 #define PCI_EXP_SLTSTA2		58	/* Slot Status 2 */
593 
594 /* Extended Capabilities (PCI-X 2.0 and Express) */
595 #define PCI_EXT_CAP_ID(header)		(header & 0x0000ffff)
596 #define PCI_EXT_CAP_VER(header)		((header >> 16) & 0xf)
597 #define PCI_EXT_CAP_NEXT(header)	((header >> 20) & 0xffc)
598 
599 #define PCI_EXT_CAP_ID_ERR	0x01	/* Advanced Error Reporting */
600 #define PCI_EXT_CAP_ID_VC	0x02	/* Virtual Channel Capability */
601 #define PCI_EXT_CAP_ID_DSN	0x03	/* Device Serial Number */
602 #define PCI_EXT_CAP_ID_PWR	0x04	/* Power Budgeting */
603 #define PCI_EXT_CAP_ID_RCLD	0x05	/* Root Complex Link Declaration */
604 #define PCI_EXT_CAP_ID_RCILC	0x06	/* Root Complex Internal Link Control */
605 #define PCI_EXT_CAP_ID_RCEC	0x07	/* Root Complex Event Collector */
606 #define PCI_EXT_CAP_ID_MFVC	0x08	/* Multi-Function VC Capability */
607 #define PCI_EXT_CAP_ID_VC9	0x09	/* same as _VC */
608 #define PCI_EXT_CAP_ID_RCRB	0x0A	/* Root Complex RB? */
609 #define PCI_EXT_CAP_ID_VNDR	0x0B	/* Vendor-Specific */
610 #define PCI_EXT_CAP_ID_CAC	0x0C	/* Config Access - obsolete */
611 #define PCI_EXT_CAP_ID_ACS	0x0D	/* Access Control Services */
612 #define PCI_EXT_CAP_ID_ARI	0x0E	/* Alternate Routing ID */
613 #define PCI_EXT_CAP_ID_ATS	0x0F	/* Address Translation Services */
614 #define PCI_EXT_CAP_ID_SRIOV	0x10	/* Single Root I/O Virtualization */
615 #define PCI_EXT_CAP_ID_MRIOV	0x11	/* Multi Root I/O Virtualization */
616 #define PCI_EXT_CAP_ID_MCAST	0x12	/* Multicast */
617 #define PCI_EXT_CAP_ID_PRI	0x13	/* Page Request Interface */
618 #define PCI_EXT_CAP_ID_AMD_XXX	0x14	/* Reserved for AMD */
619 #define PCI_EXT_CAP_ID_REBAR	0x15	/* Resizable BAR */
620 #define PCI_EXT_CAP_ID_DPA	0x16	/* Dynamic Power Allocation */
621 #define PCI_EXT_CAP_ID_TPH	0x17	/* TPH Requester */
622 #define PCI_EXT_CAP_ID_LTR	0x18	/* Latency Tolerance Reporting */
623 #define PCI_EXT_CAP_ID_SECPCI	0x19	/* Secondary PCIe Capability */
624 #define PCI_EXT_CAP_ID_PMUX	0x1A	/* Protocol Multiplexing */
625 #define PCI_EXT_CAP_ID_PASID	0x1B	/* Process Address Space ID */
626 #define PCI_EXT_CAP_ID_MAX	PCI_EXT_CAP_ID_PASID
627 
628 #define PCI_EXT_CAP_DSN_SIZEOF	12
629 #define PCI_EXT_CAP_MCAST_ENDPOINT_SIZEOF 40
630 
631 /* Advanced Error Reporting */
632 #define PCI_ERR_UNCOR_STATUS	4	/* Uncorrectable Error Status */
633 #define  PCI_ERR_UNC_TRAIN	0x00000001	/* Training */
634 #define  PCI_ERR_UNC_DLP	0x00000010	/* Data Link Protocol */
635 #define  PCI_ERR_UNC_SURPDN	0x00000020	/* Surprise Down */
636 #define  PCI_ERR_UNC_POISON_TLP	0x00001000	/* Poisoned TLP */
637 #define  PCI_ERR_UNC_FCP	0x00002000	/* Flow Control Protocol */
638 #define  PCI_ERR_UNC_COMP_TIME	0x00004000	/* Completion Timeout */
639 #define  PCI_ERR_UNC_COMP_ABORT	0x00008000	/* Completer Abort */
640 #define  PCI_ERR_UNC_UNX_COMP	0x00010000	/* Unexpected Completion */
641 #define  PCI_ERR_UNC_RX_OVER	0x00020000	/* Receiver Overflow */
642 #define  PCI_ERR_UNC_MALF_TLP	0x00040000	/* Malformed TLP */
643 #define  PCI_ERR_UNC_ECRC	0x00080000	/* ECRC Error Status */
644 #define  PCI_ERR_UNC_UNSUP	0x00100000	/* Unsupported Request */
645 #define  PCI_ERR_UNC_ACSV	0x00200000	/* ACS Violation */
646 #define  PCI_ERR_UNC_INTN	0x00400000	/* internal error */
647 #define  PCI_ERR_UNC_MCBTLP	0x00800000	/* MC blocked TLP */
648 #define  PCI_ERR_UNC_ATOMEG	0x01000000	/* Atomic egress blocked */
649 #define  PCI_ERR_UNC_TLPPRE	0x02000000	/* TLP prefix blocked */
650 #define PCI_ERR_UNCOR_MASK	8	/* Uncorrectable Error Mask */
651 	/* Same bits as above */
652 #define PCI_ERR_UNCOR_SEVER	12	/* Uncorrectable Error Severity */
653 	/* Same bits as above */
654 #define PCI_ERR_COR_STATUS	16	/* Correctable Error Status */
655 #define  PCI_ERR_COR_RCVR	0x00000001	/* Receiver Error Status */
656 #define  PCI_ERR_COR_BAD_TLP	0x00000040	/* Bad TLP Status */
657 #define  PCI_ERR_COR_BAD_DLLP	0x00000080	/* Bad DLLP Status */
658 #define  PCI_ERR_COR_REP_ROLL	0x00000100	/* REPLAY_NUM Rollover */
659 #define  PCI_ERR_COR_REP_TIMER	0x00001000	/* Replay Timer Timeout */
660 #define  PCI_ERR_COR_ADV_NFAT	0x00002000	/* Advisory Non-Fatal */
661 #define  PCI_ERR_COR_INTERNAL	0x00004000	/* Corrected Internal */
662 #define  PCI_ERR_COR_LOG_OVER	0x00008000	/* Header Log Overflow */
663 #define PCI_ERR_COR_MASK	20	/* Correctable Error Mask */
664 	/* Same bits as above */
665 #define PCI_ERR_CAP		24	/* Advanced Error Capabilities */
666 #define  PCI_ERR_CAP_FEP(x)	((x) & 31)	/* First Error Pointer */
667 #define  PCI_ERR_CAP_ECRC_GENC	0x00000020	/* ECRC Generation Capable */
668 #define  PCI_ERR_CAP_ECRC_GENE	0x00000040	/* ECRC Generation Enable */
669 #define  PCI_ERR_CAP_ECRC_CHKC	0x00000080	/* ECRC Check Capable */
670 #define  PCI_ERR_CAP_ECRC_CHKE	0x00000100	/* ECRC Check Enable */
671 #define PCI_ERR_HEADER_LOG	28	/* Header Log Register (16 bytes) */
672 #define PCI_ERR_ROOT_COMMAND	44	/* Root Error Command */
673 /* Correctable Err Reporting Enable */
674 #define PCI_ERR_ROOT_CMD_COR_EN		0x00000001
675 /* Non-fatal Err Reporting Enable */
676 #define PCI_ERR_ROOT_CMD_NONFATAL_EN	0x00000002
677 /* Fatal Err Reporting Enable */
678 #define PCI_ERR_ROOT_CMD_FATAL_EN	0x00000004
679 #define PCI_ERR_ROOT_STATUS	48
680 #define PCI_ERR_ROOT_COR_RCV		0x00000001	/* ERR_COR Received */
681 /* Multi ERR_COR Received */
682 #define PCI_ERR_ROOT_MULTI_COR_RCV	0x00000002
683 /* ERR_FATAL/NONFATAL Received */
684 #define PCI_ERR_ROOT_UNCOR_RCV		0x00000004
685 /* Multi ERR_FATAL/NONFATAL Received */
686 #define PCI_ERR_ROOT_MULTI_UNCOR_RCV	0x00000008
687 #define PCI_ERR_ROOT_FIRST_FATAL	0x00000010	/* First Fatal */
688 #define PCI_ERR_ROOT_NONFATAL_RCV	0x00000020	/* Non-Fatal Received */
689 #define PCI_ERR_ROOT_FATAL_RCV		0x00000040	/* Fatal Received */
690 #define PCI_ERR_ROOT_ERR_SRC	52	/* Error Source Identification */
691 
692 /* Virtual Channel */
693 #define PCI_VC_PORT_CAP1	4
694 #define  PCI_VC_CAP1_EVCC	0x00000007	/* extended VC count */
695 #define  PCI_VC_CAP1_LPEVCC	0x00000070	/* low prio extended VC count */
696 #define  PCI_VC_CAP1_ARB_SIZE	0x00000c00
697 #define PCI_VC_PORT_CAP2	8
698 #define  PCI_VC_CAP2_32_PHASE		0x00000002
699 #define  PCI_VC_CAP2_64_PHASE		0x00000004
700 #define  PCI_VC_CAP2_128_PHASE		0x00000008
701 #define  PCI_VC_CAP2_ARB_OFF		0xff000000
702 #define PCI_VC_PORT_CTRL	12
703 #define  PCI_VC_PORT_CTRL_LOAD_TABLE	0x00000001
704 #define PCI_VC_PORT_STATUS	14
705 #define  PCI_VC_PORT_STATUS_TABLE	0x00000001
706 #define PCI_VC_RES_CAP		16
707 #define  PCI_VC_RES_CAP_32_PHASE	0x00000002
708 #define  PCI_VC_RES_CAP_64_PHASE	0x00000004
709 #define  PCI_VC_RES_CAP_128_PHASE	0x00000008
710 #define  PCI_VC_RES_CAP_128_PHASE_TB	0x00000010
711 #define  PCI_VC_RES_CAP_256_PHASE	0x00000020
712 #define  PCI_VC_RES_CAP_ARB_OFF		0xff000000
713 #define PCI_VC_RES_CTRL		20
714 #define  PCI_VC_RES_CTRL_LOAD_TABLE	0x00010000
715 #define  PCI_VC_RES_CTRL_ARB_SELECT	0x000e0000
716 #define  PCI_VC_RES_CTRL_ID		0x07000000
717 #define  PCI_VC_RES_CTRL_ENABLE		0x80000000
718 #define PCI_VC_RES_STATUS	26
719 #define  PCI_VC_RES_STATUS_TABLE	0x00000001
720 #define  PCI_VC_RES_STATUS_NEGO		0x00000002
721 #define PCI_CAP_VC_BASE_SIZEOF		0x10
722 #define PCI_CAP_VC_PER_VC_SIZEOF	0x0C
723 
724 /* Power Budgeting */
725 #define PCI_PWR_DSR		4	/* Data Select Register */
726 #define PCI_PWR_DATA		8	/* Data Register */
727 #define  PCI_PWR_DATA_BASE(x)	((x) & 0xff)	    /* Base Power */
728 #define  PCI_PWR_DATA_SCALE(x)	(((x) >> 8) & 3)    /* Data Scale */
729 #define  PCI_PWR_DATA_PM_SUB(x)	(((x) >> 10) & 7)   /* PM Sub State */
730 #define  PCI_PWR_DATA_PM_STATE(x) (((x) >> 13) & 3) /* PM State */
731 #define  PCI_PWR_DATA_TYPE(x)	(((x) >> 15) & 7)   /* Type */
732 #define  PCI_PWR_DATA_RAIL(x)	(((x) >> 18) & 7)   /* Power Rail */
733 #define PCI_PWR_CAP		12	/* Capability */
734 #define  PCI_PWR_CAP_BUDGET(x)	((x) & 1)	/* Included in system budget */
735 #define PCI_EXT_CAP_PWR_SIZEOF	16
736 
737 /* Vendor-Specific (VSEC, PCI_EXT_CAP_ID_VNDR) */
738 #define PCI_VNDR_HEADER		4	/* Vendor-Specific Header */
739 #define  PCI_VNDR_HEADER_ID(x)	((x) & 0xffff)
740 #define  PCI_VNDR_HEADER_REV(x)	(((x) >> 16) & 0xf)
741 #define  PCI_VNDR_HEADER_LEN(x)	(((x) >> 20) & 0xfff)
742 
743 /*
744  * HyperTransport sub capability types
745  *
746  * Unfortunately there are both 3 bit and 5 bit capability types defined
747  * in the HT spec, catering for that is a little messy. You probably don't
748  * want to use these directly, just use pci_find_ht_capability() and it
749  * will do the right thing for you.
750  */
751 #define HT_3BIT_CAP_MASK	0xE0
752 #define HT_CAPTYPE_SLAVE	0x00	/* Slave/Primary link configuration */
753 #define HT_CAPTYPE_HOST		0x20	/* Host/Secondary link configuration */
754 
755 #define HT_5BIT_CAP_MASK	0xF8
756 #define HT_CAPTYPE_IRQ		0x80	/* IRQ Configuration */
757 #define HT_CAPTYPE_REMAPPING_40	0xA0	/* 40 bit address remapping */
758 #define HT_CAPTYPE_REMAPPING_64 0xA2	/* 64 bit address remapping */
759 #define HT_CAPTYPE_UNITID_CLUMP	0x90	/* Unit ID clumping */
760 #define HT_CAPTYPE_EXTCONF	0x98	/* Extended Configuration Space Access */
761 #define HT_CAPTYPE_MSI_MAPPING	0xA8	/* MSI Mapping Capability */
762 #define  HT_MSI_FLAGS		0x02		/* Offset to flags */
763 #define  HT_MSI_FLAGS_ENABLE	0x1		/* Mapping enable */
764 #define  HT_MSI_FLAGS_FIXED	0x2		/* Fixed mapping only */
765 #define  HT_MSI_FIXED_ADDR	0x00000000FEE00000ULL	/* Fixed addr */
766 #define  HT_MSI_ADDR_LO		0x04		/* Offset to low addr bits */
767 #define  HT_MSI_ADDR_LO_MASK	0xFFF00000	/* Low address bit mask */
768 #define  HT_MSI_ADDR_HI		0x08		/* Offset to high addr bits */
769 #define HT_CAPTYPE_DIRECT_ROUTE	0xB0	/* Direct routing configuration */
770 #define HT_CAPTYPE_VCSET	0xB8	/* Virtual Channel configuration */
771 #define HT_CAPTYPE_ERROR_RETRY	0xC0	/* Retry on error configuration */
772 #define HT_CAPTYPE_GEN3		0xD0	/* Generation 3 HyperTransport configuration */
773 #define HT_CAPTYPE_PM		0xE0	/* HyperTransport power management configuration */
774 #define HT_CAP_SIZEOF_LONG	28	/* slave & primary */
775 #define HT_CAP_SIZEOF_SHORT	24	/* host & secondary */
776 
777 /* Alternative Routing-ID Interpretation */
778 #define PCI_ARI_CAP		0x04	/* ARI Capability Register */
779 #define  PCI_ARI_CAP_MFVC	0x0001	/* MFVC Function Groups Capability */
780 #define  PCI_ARI_CAP_ACS	0x0002	/* ACS Function Groups Capability */
781 #define  PCI_ARI_CAP_NFN(x)	(((x) >> 8) & 0xff) /* Next Function Number */
782 #define PCI_ARI_CTRL		0x06	/* ARI Control Register */
783 #define  PCI_ARI_CTRL_MFVC	0x0001	/* MFVC Function Groups Enable */
784 #define  PCI_ARI_CTRL_ACS	0x0002	/* ACS Function Groups Enable */
785 #define  PCI_ARI_CTRL_FG(x)	(((x) >> 4) & 7) /* Function Group */
786 #define PCI_EXT_CAP_ARI_SIZEOF	8
787 
788 /* Address Translation Service */
789 #define PCI_ATS_CAP		0x04	/* ATS Capability Register */
790 #define  PCI_ATS_CAP_QDEP(x)	((x) & 0x1f)	/* Invalidate Queue Depth */
791 #define  PCI_ATS_MAX_QDEP	32	/* Max Invalidate Queue Depth */
792 #define PCI_ATS_CTRL		0x06	/* ATS Control Register */
793 #define  PCI_ATS_CTRL_ENABLE	0x8000	/* ATS Enable */
794 #define  PCI_ATS_CTRL_STU(x)	((x) & 0x1f)	/* Smallest Translation Unit */
795 #define  PCI_ATS_MIN_STU	12	/* shift of minimum STU block */
796 #define PCI_EXT_CAP_ATS_SIZEOF	8
797 
798 /* Page Request Interface */
799 #define PCI_PRI_CTRL		0x04	/* PRI control register */
800 #define  PCI_PRI_CTRL_ENABLE	0x01	/* Enable */
801 #define  PCI_PRI_CTRL_RESET	0x02	/* Reset */
802 #define PCI_PRI_STATUS		0x06	/* PRI status register */
803 #define  PCI_PRI_STATUS_RF	0x001	/* Response Failure */
804 #define  PCI_PRI_STATUS_UPRGI	0x002	/* Unexpected PRG index */
805 #define  PCI_PRI_STATUS_STOPPED	0x100	/* PRI Stopped */
806 #define PCI_PRI_MAX_REQ		0x08	/* PRI max reqs supported */
807 #define PCI_PRI_ALLOC_REQ	0x0c	/* PRI max reqs allowed */
808 #define PCI_EXT_CAP_PRI_SIZEOF	16
809 
810 /* Process Address Space ID */
811 #define PCI_PASID_CAP		0x04    /* PASID feature register */
812 #define  PCI_PASID_CAP_EXEC	0x02	/* Exec permissions Supported */
813 #define  PCI_PASID_CAP_PRIV	0x04	/* Privilege Mode Supported */
814 #define PCI_PASID_CTRL		0x06    /* PASID control register */
815 #define  PCI_PASID_CTRL_ENABLE	0x01	/* Enable bit */
816 #define  PCI_PASID_CTRL_EXEC	0x02	/* Exec permissions Enable */
817 #define  PCI_PASID_CTRL_PRIV	0x04	/* Privilege Mode Enable */
818 #define PCI_EXT_CAP_PASID_SIZEOF	8
819 
820 /* Single Root I/O Virtualization */
821 #define PCI_SRIOV_CAP		0x04	/* SR-IOV Capabilities */
822 #define  PCI_SRIOV_CAP_VFM	0x01	/* VF Migration Capable */
823 #define  PCI_SRIOV_CAP_INTR(x)	((x) >> 21) /* Interrupt Message Number */
824 #define PCI_SRIOV_CTRL		0x08	/* SR-IOV Control */
825 #define  PCI_SRIOV_CTRL_VFE	0x01	/* VF Enable */
826 #define  PCI_SRIOV_CTRL_VFM	0x02	/* VF Migration Enable */
827 #define  PCI_SRIOV_CTRL_INTR	0x04	/* VF Migration Interrupt Enable */
828 #define  PCI_SRIOV_CTRL_MSE	0x08	/* VF Memory Space Enable */
829 #define  PCI_SRIOV_CTRL_ARI	0x10	/* ARI Capable Hierarchy */
830 #define PCI_SRIOV_STATUS	0x0a	/* SR-IOV Status */
831 #define  PCI_SRIOV_STATUS_VFM	0x01	/* VF Migration Status */
832 #define PCI_SRIOV_INITIAL_VF	0x0c	/* Initial VFs */
833 #define PCI_SRIOV_TOTAL_VF	0x0e	/* Total VFs */
834 #define PCI_SRIOV_NUM_VF	0x10	/* Number of VFs */
835 #define PCI_SRIOV_FUNC_LINK	0x12	/* Function Dependency Link */
836 #define PCI_SRIOV_VF_OFFSET	0x14	/* First VF Offset */
837 #define PCI_SRIOV_VF_STRIDE	0x16	/* Following VF Stride */
838 #define PCI_SRIOV_VF_DID	0x1a	/* VF Device ID */
839 #define PCI_SRIOV_SUP_PGSIZE	0x1c	/* Supported Page Sizes */
840 #define PCI_SRIOV_SYS_PGSIZE	0x20	/* System Page Size */
841 #define PCI_SRIOV_BAR		0x24	/* VF BAR0 */
842 #define  PCI_SRIOV_NUM_BARS	6	/* Number of VF BARs */
843 #define PCI_SRIOV_VFM		0x3c	/* VF Migration State Array Offset*/
844 #define  PCI_SRIOV_VFM_BIR(x)	((x) & 7)	/* State BIR */
845 #define  PCI_SRIOV_VFM_OFFSET(x) ((x) & ~7)	/* State Offset */
846 #define  PCI_SRIOV_VFM_UA	0x0	/* Inactive.Unavailable */
847 #define  PCI_SRIOV_VFM_MI	0x1	/* Dormant.MigrateIn */
848 #define  PCI_SRIOV_VFM_MO	0x2	/* Active.MigrateOut */
849 #define  PCI_SRIOV_VFM_AV	0x3	/* Active.Available */
850 #define PCI_EXT_CAP_SRIOV_SIZEOF 64
851 
852 #define PCI_LTR_MAX_SNOOP_LAT	0x4
853 #define PCI_LTR_MAX_NOSNOOP_LAT	0x6
854 #define  PCI_LTR_VALUE_MASK	0x000003ff
855 #define  PCI_LTR_SCALE_MASK	0x00001c00
856 #define  PCI_LTR_SCALE_SHIFT	10
857 #define PCI_EXT_CAP_LTR_SIZEOF	8
858 
859 /* Access Control Service */
860 #define PCI_ACS_CAP		0x04	/* ACS Capability Register */
861 #define  PCI_ACS_SV		0x01	/* Source Validation */
862 #define  PCI_ACS_TB		0x02	/* Translation Blocking */
863 #define  PCI_ACS_RR		0x04	/* P2P Request Redirect */
864 #define  PCI_ACS_CR		0x08	/* P2P Completion Redirect */
865 #define  PCI_ACS_UF		0x10	/* Upstream Forwarding */
866 #define  PCI_ACS_EC		0x20	/* P2P Egress Control */
867 #define  PCI_ACS_DT		0x40	/* Direct Translated P2P */
868 #define PCI_ACS_EGRESS_BITS	0x05	/* ACS Egress Control Vector Size */
869 #define PCI_ACS_CTRL		0x06	/* ACS Control Register */
870 #define PCI_ACS_EGRESS_CTL_V	0x08	/* ACS Egress Control Vector */
871 
872 #define PCI_VSEC_HDR		4	/* extended cap - vendor-specific */
873 #define  PCI_VSEC_HDR_LEN_SHIFT	20	/* shift for length field */
874 
875 /* SATA capability */
876 #define PCI_SATA_REGS		4	/* SATA REGs specifier */
877 #define  PCI_SATA_REGS_MASK	0xF	/* location - BAR#/inline */
878 #define  PCI_SATA_REGS_INLINE	0xF	/* REGS in config space */
879 #define PCI_SATA_SIZEOF_SHORT	8
880 #define PCI_SATA_SIZEOF_LONG	16
881 
882 /* Resizable BARs */
883 #define PCI_REBAR_CTRL		8	/* control register */
884 #define  PCI_REBAR_CTRL_NBAR_MASK	(7 << 5)	/* mask for # bars */
885 #define  PCI_REBAR_CTRL_NBAR_SHIFT	5	/* shift for # bars */
886 
887 /* Dynamic Power Allocation */
888 #define PCI_DPA_CAP		4	/* capability register */
889 #define  PCI_DPA_CAP_SUBSTATE_MASK	0x1F	/* # substates - 1 */
890 #define PCI_DPA_BASE_SIZEOF	16	/* size with 0 substates */
891 
892 /* TPH Requester */
893 #define PCI_TPH_CAP		4	/* capability register */
894 #define  PCI_TPH_CAP_LOC_MASK	0x600	/* location mask */
895 #define   PCI_TPH_LOC_NONE	0x000	/* no location */
896 #define   PCI_TPH_LOC_CAP	0x200	/* in capability */
897 #define   PCI_TPH_LOC_MSIX	0x400	/* in MSI-X */
898 #define PCI_TPH_CAP_ST_MASK	0x07FF0000	/* st table mask */
899 #define PCI_TPH_CAP_ST_SHIFT	16	/* st table shift */
900 #define PCI_TPH_BASE_SIZEOF	12	/* size with no st table */
901 
902 #endif /* LINUX_PCI_REGS_H */
903