xref: /openbmc/u-boot/include/pci.h (revision 11bd5e7b)
1 /*
2  * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
3  * Andreas Heppel <aheppel@sysgo.de>
4  *
5  * (C) Copyright 2002
6  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7  *
8  * SPDX-License-Identifier:	GPL-2.0+
9  */
10 
11 #ifndef _PCI_H
12 #define _PCI_H
13 
14 #define PCI_CFG_SPACE_SIZE	256
15 #define PCI_CFG_SPACE_EXP_SIZE	4096
16 
17 /*
18  * Under PCI, each device has 256 bytes of configuration address space,
19  * of which the first 64 bytes are standardized as follows:
20  */
21 #define PCI_VENDOR_ID		0x00	/* 16 bits */
22 #define PCI_DEVICE_ID		0x02	/* 16 bits */
23 #define PCI_COMMAND		0x04	/* 16 bits */
24 #define  PCI_COMMAND_IO		0x1	/* Enable response in I/O space */
25 #define  PCI_COMMAND_MEMORY	0x2	/* Enable response in Memory space */
26 #define  PCI_COMMAND_MASTER	0x4	/* Enable bus mastering */
27 #define  PCI_COMMAND_SPECIAL	0x8	/* Enable response to special cycles */
28 #define  PCI_COMMAND_INVALIDATE 0x10	/* Use memory write and invalidate */
29 #define  PCI_COMMAND_VGA_PALETTE 0x20	/* Enable palette snooping */
30 #define  PCI_COMMAND_PARITY	0x40	/* Enable parity checking */
31 #define  PCI_COMMAND_WAIT	0x80	/* Enable address/data stepping */
32 #define  PCI_COMMAND_SERR	0x100	/* Enable SERR */
33 #define  PCI_COMMAND_FAST_BACK	0x200	/* Enable back-to-back writes */
34 
35 #define PCI_STATUS		0x06	/* 16 bits */
36 #define  PCI_STATUS_CAP_LIST	0x10	/* Support Capability List */
37 #define  PCI_STATUS_66MHZ	0x20	/* Support 66 Mhz PCI 2.1 bus */
38 #define  PCI_STATUS_UDF		0x40	/* Support User Definable Features [obsolete] */
39 #define  PCI_STATUS_FAST_BACK	0x80	/* Accept fast-back to back */
40 #define  PCI_STATUS_PARITY	0x100	/* Detected parity error */
41 #define  PCI_STATUS_DEVSEL_MASK 0x600	/* DEVSEL timing */
42 #define  PCI_STATUS_DEVSEL_FAST 0x000
43 #define  PCI_STATUS_DEVSEL_MEDIUM 0x200
44 #define  PCI_STATUS_DEVSEL_SLOW 0x400
45 #define  PCI_STATUS_SIG_TARGET_ABORT 0x800 /* Set on target abort */
46 #define  PCI_STATUS_REC_TARGET_ABORT 0x1000 /* Master ack of " */
47 #define  PCI_STATUS_REC_MASTER_ABORT 0x2000 /* Set on master abort */
48 #define  PCI_STATUS_SIG_SYSTEM_ERROR 0x4000 /* Set when we drive SERR */
49 #define  PCI_STATUS_DETECTED_PARITY 0x8000 /* Set on parity error */
50 
51 #define PCI_CLASS_REVISION	0x08	/* High 24 bits are class, low 8
52 					   revision */
53 #define PCI_REVISION_ID		0x08	/* Revision ID */
54 #define PCI_CLASS_PROG		0x09	/* Reg. Level Programming Interface */
55 #define PCI_CLASS_DEVICE	0x0a	/* Device class */
56 #define PCI_CLASS_CODE		0x0b	/* Device class code */
57 #define  PCI_CLASS_CODE_TOO_OLD	0x00
58 #define  PCI_CLASS_CODE_STORAGE 0x01
59 #define  PCI_CLASS_CODE_NETWORK 0x02
60 #define  PCI_CLASS_CODE_DISPLAY	0x03
61 #define  PCI_CLASS_CODE_MULTIMEDIA 0x04
62 #define  PCI_CLASS_CODE_MEMORY	0x05
63 #define  PCI_CLASS_CODE_BRIDGE	0x06
64 #define  PCI_CLASS_CODE_COMM	0x07
65 #define  PCI_CLASS_CODE_PERIPHERAL 0x08
66 #define  PCI_CLASS_CODE_INPUT	0x09
67 #define  PCI_CLASS_CODE_DOCKING	0x0A
68 #define  PCI_CLASS_CODE_PROCESSOR 0x0B
69 #define  PCI_CLASS_CODE_SERIAL	0x0C
70 #define  PCI_CLASS_CODE_WIRELESS 0x0D
71 #define  PCI_CLASS_CODE_I2O	0x0E
72 #define  PCI_CLASS_CODE_SATELLITE 0x0F
73 #define  PCI_CLASS_CODE_CRYPTO	0x10
74 #define  PCI_CLASS_CODE_DATA	0x11
75 /* Base Class 0x12 - 0xFE is reserved */
76 #define  PCI_CLASS_CODE_OTHER	0xFF
77 
78 #define PCI_CLASS_SUB_CODE	0x0a	/* Device sub-class code */
79 #define  PCI_CLASS_SUB_CODE_TOO_OLD_NOTVGA	0x00
80 #define  PCI_CLASS_SUB_CODE_TOO_OLD_VGA		0x01
81 #define  PCI_CLASS_SUB_CODE_STORAGE_SCSI	0x00
82 #define  PCI_CLASS_SUB_CODE_STORAGE_IDE		0x01
83 #define  PCI_CLASS_SUB_CODE_STORAGE_FLOPPY	0x02
84 #define  PCI_CLASS_SUB_CODE_STORAGE_IPIBUS	0x03
85 #define  PCI_CLASS_SUB_CODE_STORAGE_RAID	0x04
86 #define  PCI_CLASS_SUB_CODE_STORAGE_ATA		0x05
87 #define  PCI_CLASS_SUB_CODE_STORAGE_SATA	0x06
88 #define  PCI_CLASS_SUB_CODE_STORAGE_SAS		0x07
89 #define  PCI_CLASS_SUB_CODE_STORAGE_OTHER	0x80
90 #define  PCI_CLASS_SUB_CODE_NETWORK_ETHERNET	0x00
91 #define  PCI_CLASS_SUB_CODE_NETWORK_TOKENRING	0x01
92 #define  PCI_CLASS_SUB_CODE_NETWORK_FDDI	0x02
93 #define  PCI_CLASS_SUB_CODE_NETWORK_ATM		0x03
94 #define  PCI_CLASS_SUB_CODE_NETWORK_ISDN	0x04
95 #define  PCI_CLASS_SUB_CODE_NETWORK_WORLDFIP	0x05
96 #define  PCI_CLASS_SUB_CODE_NETWORK_PICMG	0x06
97 #define  PCI_CLASS_SUB_CODE_NETWORK_OTHER	0x80
98 #define  PCI_CLASS_SUB_CODE_DISPLAY_VGA		0x00
99 #define  PCI_CLASS_SUB_CODE_DISPLAY_XGA		0x01
100 #define  PCI_CLASS_SUB_CODE_DISPLAY_3D		0x02
101 #define  PCI_CLASS_SUB_CODE_DISPLAY_OTHER	0x80
102 #define  PCI_CLASS_SUB_CODE_MULTIMEDIA_VIDEO	0x00
103 #define  PCI_CLASS_SUB_CODE_MULTIMEDIA_AUDIO	0x01
104 #define  PCI_CLASS_SUB_CODE_MULTIMEDIA_PHONE	0x02
105 #define  PCI_CLASS_SUB_CODE_MULTIMEDIA_OTHER	0x80
106 #define  PCI_CLASS_SUB_CODE_MEMORY_RAM		0x00
107 #define  PCI_CLASS_SUB_CODE_MEMORY_FLASH	0x01
108 #define  PCI_CLASS_SUB_CODE_MEMORY_OTHER	0x80
109 #define  PCI_CLASS_SUB_CODE_BRIDGE_HOST		0x00
110 #define  PCI_CLASS_SUB_CODE_BRIDGE_ISA		0x01
111 #define  PCI_CLASS_SUB_CODE_BRIDGE_EISA		0x02
112 #define  PCI_CLASS_SUB_CODE_BRIDGE_MCA		0x03
113 #define  PCI_CLASS_SUB_CODE_BRIDGE_PCI		0x04
114 #define  PCI_CLASS_SUB_CODE_BRIDGE_PCMCIA	0x05
115 #define  PCI_CLASS_SUB_CODE_BRIDGE_NUBUS	0x06
116 #define  PCI_CLASS_SUB_CODE_BRIDGE_CARDBUS	0x07
117 #define  PCI_CLASS_SUB_CODE_BRIDGE_RACEWAY	0x08
118 #define  PCI_CLASS_SUB_CODE_BRIDGE_SEMI_PCI	0x09
119 #define  PCI_CLASS_SUB_CODE_BRIDGE_INFINIBAND	0x0A
120 #define  PCI_CLASS_SUB_CODE_BRIDGE_OTHER	0x80
121 #define  PCI_CLASS_SUB_CODE_COMM_SERIAL		0x00
122 #define  PCI_CLASS_SUB_CODE_COMM_PARALLEL	0x01
123 #define  PCI_CLASS_SUB_CODE_COMM_MULTIPORT	0x02
124 #define  PCI_CLASS_SUB_CODE_COMM_MODEM		0x03
125 #define  PCI_CLASS_SUB_CODE_COMM_GPIB		0x04
126 #define  PCI_CLASS_SUB_CODE_COMM_SMARTCARD	0x05
127 #define  PCI_CLASS_SUB_CODE_COMM_OTHER		0x80
128 #define  PCI_CLASS_SUB_CODE_PERIPHERAL_PIC	0x00
129 #define  PCI_CLASS_SUB_CODE_PERIPHERAL_DMA	0x01
130 #define  PCI_CLASS_SUB_CODE_PERIPHERAL_TIMER	0x02
131 #define  PCI_CLASS_SUB_CODE_PERIPHERAL_RTC	0x03
132 #define  PCI_CLASS_SUB_CODE_PERIPHERAL_HOTPLUG	0x04
133 #define  PCI_CLASS_SUB_CODE_PERIPHERAL_SD	0x05
134 #define  PCI_CLASS_SUB_CODE_PERIPHERAL_OTHER	0x80
135 #define  PCI_CLASS_SUB_CODE_INPUT_KEYBOARD	0x00
136 #define  PCI_CLASS_SUB_CODE_INPUT_DIGITIZER	0x01
137 #define  PCI_CLASS_SUB_CODE_INPUT_MOUSE		0x02
138 #define  PCI_CLASS_SUB_CODE_INPUT_SCANNER	0x03
139 #define  PCI_CLASS_SUB_CODE_INPUT_GAMEPORT	0x04
140 #define  PCI_CLASS_SUB_CODE_INPUT_OTHER		0x80
141 #define  PCI_CLASS_SUB_CODE_DOCKING_GENERIC	0x00
142 #define  PCI_CLASS_SUB_CODE_DOCKING_OTHER	0x80
143 #define  PCI_CLASS_SUB_CODE_PROCESSOR_386	0x00
144 #define  PCI_CLASS_SUB_CODE_PROCESSOR_486	0x01
145 #define  PCI_CLASS_SUB_CODE_PROCESSOR_PENTIUM	0x02
146 #define  PCI_CLASS_SUB_CODE_PROCESSOR_ALPHA	0x10
147 #define  PCI_CLASS_SUB_CODE_PROCESSOR_POWERPC	0x20
148 #define  PCI_CLASS_SUB_CODE_PROCESSOR_MIPS	0x30
149 #define  PCI_CLASS_SUB_CODE_PROCESSOR_COPROC	0x40
150 #define  PCI_CLASS_SUB_CODE_SERIAL_1394		0x00
151 #define  PCI_CLASS_SUB_CODE_SERIAL_ACCESSBUS	0x01
152 #define  PCI_CLASS_SUB_CODE_SERIAL_SSA		0x02
153 #define  PCI_CLASS_SUB_CODE_SERIAL_USB		0x03
154 #define  PCI_CLASS_SUB_CODE_SERIAL_FIBRECHAN	0x04
155 #define  PCI_CLASS_SUB_CODE_SERIAL_SMBUS	0x05
156 #define  PCI_CLASS_SUB_CODE_SERIAL_INFINIBAND	0x06
157 #define  PCI_CLASS_SUB_CODE_SERIAL_IPMI		0x07
158 #define  PCI_CLASS_SUB_CODE_SERIAL_SERCOS	0x08
159 #define  PCI_CLASS_SUB_CODE_SERIAL_CANBUS	0x09
160 #define  PCI_CLASS_SUB_CODE_WIRELESS_IRDA	0x00
161 #define  PCI_CLASS_SUB_CODE_WIRELESS_IR		0x01
162 #define  PCI_CLASS_SUB_CODE_WIRELESS_RF		0x10
163 #define  PCI_CLASS_SUB_CODE_WIRELESS_BLUETOOTH	0x11
164 #define  PCI_CLASS_SUB_CODE_WIRELESS_BROADBAND	0x12
165 #define  PCI_CLASS_SUB_CODE_WIRELESS_80211A	0x20
166 #define  PCI_CLASS_SUB_CODE_WIRELESS_80211B	0x21
167 #define  PCI_CLASS_SUB_CODE_WIRELESS_OTHER	0x80
168 #define  PCI_CLASS_SUB_CODE_I2O_V1_0		0x00
169 #define  PCI_CLASS_SUB_CODE_SATELLITE_TV	0x01
170 #define  PCI_CLASS_SUB_CODE_SATELLITE_AUDIO	0x02
171 #define  PCI_CLASS_SUB_CODE_SATELLITE_VOICE	0x03
172 #define  PCI_CLASS_SUB_CODE_SATELLITE_DATA	0x04
173 #define  PCI_CLASS_SUB_CODE_CRYPTO_NETWORK	0x00
174 #define  PCI_CLASS_SUB_CODE_CRYPTO_ENTERTAINMENT 0x10
175 #define  PCI_CLASS_SUB_CODE_CRYPTO_OTHER	0x80
176 #define  PCI_CLASS_SUB_CODE_DATA_DPIO		0x00
177 #define  PCI_CLASS_SUB_CODE_DATA_PERFCNTR	0x01
178 #define  PCI_CLASS_SUB_CODE_DATA_COMMSYNC	0x10
179 #define  PCI_CLASS_SUB_CODE_DATA_MGMT		0x20
180 #define  PCI_CLASS_SUB_CODE_DATA_OTHER		0x80
181 
182 #define PCI_CACHE_LINE_SIZE	0x0c	/* 8 bits */
183 #define PCI_LATENCY_TIMER	0x0d	/* 8 bits */
184 #define PCI_HEADER_TYPE		0x0e	/* 8 bits */
185 #define  PCI_HEADER_TYPE_NORMAL 0
186 #define  PCI_HEADER_TYPE_BRIDGE 1
187 #define  PCI_HEADER_TYPE_CARDBUS 2
188 
189 #define PCI_BIST		0x0f	/* 8 bits */
190 #define PCI_BIST_CODE_MASK	0x0f	/* Return result */
191 #define PCI_BIST_START		0x40	/* 1 to start BIST, 2 secs or less */
192 #define PCI_BIST_CAPABLE	0x80	/* 1 if BIST capable */
193 
194 /*
195  * Base addresses specify locations in memory or I/O space.
196  * Decoded size can be determined by writing a value of
197  * 0xffffffff to the register, and reading it back.  Only
198  * 1 bits are decoded.
199  */
200 #define PCI_BASE_ADDRESS_0	0x10	/* 32 bits */
201 #define PCI_BASE_ADDRESS_1	0x14	/* 32 bits [htype 0,1 only] */
202 #define PCI_BASE_ADDRESS_2	0x18	/* 32 bits [htype 0 only] */
203 #define PCI_BASE_ADDRESS_3	0x1c	/* 32 bits */
204 #define PCI_BASE_ADDRESS_4	0x20	/* 32 bits */
205 #define PCI_BASE_ADDRESS_5	0x24	/* 32 bits */
206 #define  PCI_BASE_ADDRESS_SPACE 0x01	/* 0 = memory, 1 = I/O */
207 #define  PCI_BASE_ADDRESS_SPACE_IO 0x01
208 #define  PCI_BASE_ADDRESS_SPACE_MEMORY 0x00
209 #define  PCI_BASE_ADDRESS_MEM_TYPE_MASK 0x06
210 #define  PCI_BASE_ADDRESS_MEM_TYPE_32	0x00	/* 32 bit address */
211 #define  PCI_BASE_ADDRESS_MEM_TYPE_1M	0x02	/* Below 1M [obsolete] */
212 #define  PCI_BASE_ADDRESS_MEM_TYPE_64	0x04	/* 64 bit address */
213 #define  PCI_BASE_ADDRESS_MEM_PREFETCH	0x08	/* prefetchable? */
214 #define  PCI_BASE_ADDRESS_MEM_MASK	(~0x0fULL)
215 #define  PCI_BASE_ADDRESS_IO_MASK	(~0x03ULL)
216 /* bit 1 is reserved if address_space = 1 */
217 
218 /* Header type 0 (normal devices) */
219 #define PCI_CARDBUS_CIS		0x28
220 #define PCI_SUBSYSTEM_VENDOR_ID 0x2c
221 #define PCI_SUBSYSTEM_ID	0x2e
222 #define PCI_ROM_ADDRESS		0x30	/* Bits 31..11 are address, 10..1 reserved */
223 #define  PCI_ROM_ADDRESS_ENABLE 0x01
224 #define PCI_ROM_ADDRESS_MASK	(~0x7ffULL)
225 
226 #define PCI_CAPABILITY_LIST	0x34	/* Offset of first capability list entry */
227 
228 /* 0x35-0x3b are reserved */
229 #define PCI_INTERRUPT_LINE	0x3c	/* 8 bits */
230 #define PCI_INTERRUPT_PIN	0x3d	/* 8 bits */
231 #define PCI_MIN_GNT		0x3e	/* 8 bits */
232 #define PCI_MAX_LAT		0x3f	/* 8 bits */
233 
234 #define PCI_INTERRUPT_LINE_DISABLE	0xff
235 
236 /* Header type 1 (PCI-to-PCI bridges) */
237 #define PCI_PRIMARY_BUS		0x18	/* Primary bus number */
238 #define PCI_SECONDARY_BUS	0x19	/* Secondary bus number */
239 #define PCI_SUBORDINATE_BUS	0x1a	/* Highest bus number behind the bridge */
240 #define PCI_SEC_LATENCY_TIMER	0x1b	/* Latency timer for secondary interface */
241 #define PCI_IO_BASE		0x1c	/* I/O range behind the bridge */
242 #define PCI_IO_LIMIT		0x1d
243 #define  PCI_IO_RANGE_TYPE_MASK 0x0f	/* I/O bridging type */
244 #define  PCI_IO_RANGE_TYPE_16	0x00
245 #define  PCI_IO_RANGE_TYPE_32	0x01
246 #define  PCI_IO_RANGE_MASK	~0x0f
247 #define PCI_SEC_STATUS		0x1e	/* Secondary status register, only bit 14 used */
248 #define PCI_MEMORY_BASE		0x20	/* Memory range behind */
249 #define PCI_MEMORY_LIMIT	0x22
250 #define  PCI_MEMORY_RANGE_TYPE_MASK 0x0f
251 #define  PCI_MEMORY_RANGE_MASK	~0x0f
252 #define PCI_PREF_MEMORY_BASE	0x24	/* Prefetchable memory range behind */
253 #define PCI_PREF_MEMORY_LIMIT	0x26
254 #define  PCI_PREF_RANGE_TYPE_MASK 0x0f
255 #define  PCI_PREF_RANGE_TYPE_32 0x00
256 #define  PCI_PREF_RANGE_TYPE_64 0x01
257 #define  PCI_PREF_RANGE_MASK	~0x0f
258 #define PCI_PREF_BASE_UPPER32	0x28	/* Upper half of prefetchable memory range */
259 #define PCI_PREF_LIMIT_UPPER32	0x2c
260 #define PCI_IO_BASE_UPPER16	0x30	/* Upper half of I/O addresses */
261 #define PCI_IO_LIMIT_UPPER16	0x32
262 /* 0x34 same as for htype 0 */
263 /* 0x35-0x3b is reserved */
264 #define PCI_ROM_ADDRESS1	0x38	/* Same as PCI_ROM_ADDRESS, but for htype 1 */
265 /* 0x3c-0x3d are same as for htype 0 */
266 #define PCI_BRIDGE_CONTROL	0x3e
267 #define  PCI_BRIDGE_CTL_PARITY	0x01	/* Enable parity detection on secondary interface */
268 #define  PCI_BRIDGE_CTL_SERR	0x02	/* The same for SERR forwarding */
269 #define  PCI_BRIDGE_CTL_NO_ISA	0x04	/* Disable bridging of ISA ports */
270 #define  PCI_BRIDGE_CTL_VGA	0x08	/* Forward VGA addresses */
271 #define  PCI_BRIDGE_CTL_MASTER_ABORT 0x20  /* Report master aborts */
272 #define  PCI_BRIDGE_CTL_BUS_RESET 0x40	/* Secondary bus reset */
273 #define  PCI_BRIDGE_CTL_FAST_BACK 0x80	/* Fast Back2Back enabled on secondary interface */
274 
275 /* From 440ep */
276 #define PCI_ERREN       0x48     /* Error Enable */
277 #define PCI_ERRSTS      0x49     /* Error Status */
278 #define PCI_BRDGOPT1    0x4A     /* PCI Bridge Options 1 */
279 #define PCI_PLBSESR0    0x4C     /* PCI PLB Slave Error Syndrome 0 */
280 #define PCI_PLBSESR1    0x50     /* PCI PLB Slave Error Syndrome 1 */
281 #define PCI_PLBSEAR     0x54     /* PCI PLB Slave Error Address */
282 #define PCI_CAPID       0x58     /* Capability Identifier */
283 #define PCI_NEXTITEMPTR 0x59     /* Next Item Pointer */
284 #define PCI_PMC         0x5A     /* Power Management Capabilities */
285 #define PCI_PMCSR       0x5C     /* Power Management Control Status */
286 #define PCI_PMCSRBSE    0x5E     /* PMCSR PCI to PCI Bridge Support Extensions */
287 #define PCI_BRDGOPT2    0x60     /* PCI Bridge Options 2 */
288 #define PCI_PMSCRR      0x64     /* Power Management State Change Request Re. */
289 
290 /* Header type 2 (CardBus bridges) */
291 #define PCI_CB_CAPABILITY_LIST	0x14
292 /* 0x15 reserved */
293 #define PCI_CB_SEC_STATUS	0x16	/* Secondary status */
294 #define PCI_CB_PRIMARY_BUS	0x18	/* PCI bus number */
295 #define PCI_CB_CARD_BUS		0x19	/* CardBus bus number */
296 #define PCI_CB_SUBORDINATE_BUS	0x1a	/* Subordinate bus number */
297 #define PCI_CB_LATENCY_TIMER	0x1b	/* CardBus latency timer */
298 #define PCI_CB_MEMORY_BASE_0	0x1c
299 #define PCI_CB_MEMORY_LIMIT_0	0x20
300 #define PCI_CB_MEMORY_BASE_1	0x24
301 #define PCI_CB_MEMORY_LIMIT_1	0x28
302 #define PCI_CB_IO_BASE_0	0x2c
303 #define PCI_CB_IO_BASE_0_HI	0x2e
304 #define PCI_CB_IO_LIMIT_0	0x30
305 #define PCI_CB_IO_LIMIT_0_HI	0x32
306 #define PCI_CB_IO_BASE_1	0x34
307 #define PCI_CB_IO_BASE_1_HI	0x36
308 #define PCI_CB_IO_LIMIT_1	0x38
309 #define PCI_CB_IO_LIMIT_1_HI	0x3a
310 #define  PCI_CB_IO_RANGE_MASK	~0x03
311 /* 0x3c-0x3d are same as for htype 0 */
312 #define PCI_CB_BRIDGE_CONTROL	0x3e
313 #define  PCI_CB_BRIDGE_CTL_PARITY	0x01	/* Similar to standard bridge control register */
314 #define  PCI_CB_BRIDGE_CTL_SERR		0x02
315 #define  PCI_CB_BRIDGE_CTL_ISA		0x04
316 #define  PCI_CB_BRIDGE_CTL_VGA		0x08
317 #define  PCI_CB_BRIDGE_CTL_MASTER_ABORT 0x20
318 #define  PCI_CB_BRIDGE_CTL_CB_RESET	0x40	/* CardBus reset */
319 #define  PCI_CB_BRIDGE_CTL_16BIT_INT	0x80	/* Enable interrupt for 16-bit cards */
320 #define  PCI_CB_BRIDGE_CTL_PREFETCH_MEM0 0x100	/* Prefetch enable for both memory regions */
321 #define  PCI_CB_BRIDGE_CTL_PREFETCH_MEM1 0x200
322 #define  PCI_CB_BRIDGE_CTL_POST_WRITES	0x400
323 #define PCI_CB_SUBSYSTEM_VENDOR_ID 0x40
324 #define PCI_CB_SUBSYSTEM_ID	0x42
325 #define PCI_CB_LEGACY_MODE_BASE 0x44	/* 16-bit PC Card legacy mode base address (ExCa) */
326 /* 0x48-0x7f reserved */
327 
328 /* Capability lists */
329 
330 #define PCI_CAP_LIST_ID		0	/* Capability ID */
331 #define  PCI_CAP_ID_PM		0x01	/* Power Management */
332 #define  PCI_CAP_ID_AGP		0x02	/* Accelerated Graphics Port */
333 #define  PCI_CAP_ID_VPD		0x03	/* Vital Product Data */
334 #define  PCI_CAP_ID_SLOTID	0x04	/* Slot Identification */
335 #define  PCI_CAP_ID_MSI		0x05	/* Message Signalled Interrupts */
336 #define  PCI_CAP_ID_CHSWP	0x06	/* CompactPCI HotSwap */
337 #define  PCI_CAP_ID_EXP 	0x10	/* PCI Express */
338 #define PCI_CAP_LIST_NEXT	1	/* Next capability in the list */
339 #define PCI_CAP_FLAGS		2	/* Capability defined flags (16 bits) */
340 #define PCI_CAP_SIZEOF		4
341 
342 /* Power Management Registers */
343 
344 #define  PCI_PM_CAP_VER_MASK	0x0007	/* Version */
345 #define  PCI_PM_CAP_PME_CLOCK	0x0008	/* PME clock required */
346 #define  PCI_PM_CAP_AUX_POWER	0x0010	/* Auxilliary power support */
347 #define  PCI_PM_CAP_DSI		0x0020	/* Device specific initialization */
348 #define  PCI_PM_CAP_D1		0x0200	/* D1 power state support */
349 #define  PCI_PM_CAP_D2		0x0400	/* D2 power state support */
350 #define  PCI_PM_CAP_PME		0x0800	/* PME pin supported */
351 #define PCI_PM_CTRL		4	/* PM control and status register */
352 #define  PCI_PM_CTRL_STATE_MASK 0x0003	/* Current power state (D0 to D3) */
353 #define  PCI_PM_CTRL_PME_ENABLE 0x0100	/* PME pin enable */
354 #define  PCI_PM_CTRL_DATA_SEL_MASK	0x1e00	/* Data select (??) */
355 #define  PCI_PM_CTRL_DATA_SCALE_MASK	0x6000	/* Data scale (??) */
356 #define  PCI_PM_CTRL_PME_STATUS 0x8000	/* PME pin status */
357 #define PCI_PM_PPB_EXTENSIONS	6	/* PPB support extensions (??) */
358 #define  PCI_PM_PPB_B2_B3	0x40	/* Stop clock when in D3hot (??) */
359 #define  PCI_PM_BPCC_ENABLE	0x80	/* Bus power/clock control enable (??) */
360 #define PCI_PM_DATA_REGISTER	7	/* (??) */
361 #define PCI_PM_SIZEOF		8
362 
363 /* AGP registers */
364 
365 #define PCI_AGP_VERSION		2	/* BCD version number */
366 #define PCI_AGP_RFU		3	/* Rest of capability flags */
367 #define PCI_AGP_STATUS		4	/* Status register */
368 #define  PCI_AGP_STATUS_RQ_MASK 0xff000000	/* Maximum number of requests - 1 */
369 #define  PCI_AGP_STATUS_SBA	0x0200	/* Sideband addressing supported */
370 #define  PCI_AGP_STATUS_64BIT	0x0020	/* 64-bit addressing supported */
371 #define  PCI_AGP_STATUS_FW	0x0010	/* FW transfers supported */
372 #define  PCI_AGP_STATUS_RATE4	0x0004	/* 4x transfer rate supported */
373 #define  PCI_AGP_STATUS_RATE2	0x0002	/* 2x transfer rate supported */
374 #define  PCI_AGP_STATUS_RATE1	0x0001	/* 1x transfer rate supported */
375 #define PCI_AGP_COMMAND		8	/* Control register */
376 #define  PCI_AGP_COMMAND_RQ_MASK 0xff000000  /* Master: Maximum number of requests */
377 #define  PCI_AGP_COMMAND_SBA	0x0200	/* Sideband addressing enabled */
378 #define  PCI_AGP_COMMAND_AGP	0x0100	/* Allow processing of AGP transactions */
379 #define  PCI_AGP_COMMAND_64BIT	0x0020	/* Allow processing of 64-bit addresses */
380 #define  PCI_AGP_COMMAND_FW	0x0010	/* Force FW transfers */
381 #define  PCI_AGP_COMMAND_RATE4	0x0004	/* Use 4x rate */
382 #define  PCI_AGP_COMMAND_RATE2	0x0002	/* Use 4x rate */
383 #define  PCI_AGP_COMMAND_RATE1	0x0001	/* Use 4x rate */
384 #define PCI_AGP_SIZEOF		12
385 
386 /* PCI-X registers */
387 
388 #define  PCI_X_CMD_DPERR_E      0x0001  /* Data Parity Error Recovery Enable */
389 #define  PCI_X_CMD_ERO          0x0002  /* Enable Relaxed Ordering */
390 #define  PCI_X_CMD_MAX_READ     0x0000  /* Max Memory Read Byte Count */
391 #define  PCI_X_CMD_MAX_SPLIT    0x0030  /* Max Outstanding Split Transactions */
392 #define  PCI_X_CMD_VERSION(x)   (((x) >> 12) & 3) /* Version */
393 
394 
395 /* Slot Identification */
396 
397 #define PCI_SID_ESR		2	/* Expansion Slot Register */
398 #define  PCI_SID_ESR_NSLOTS	0x1f	/* Number of expansion slots available */
399 #define  PCI_SID_ESR_FIC	0x20	/* First In Chassis Flag */
400 #define PCI_SID_CHASSIS_NR	3	/* Chassis Number */
401 
402 /* Message Signalled Interrupts registers */
403 
404 #define PCI_MSI_FLAGS		2	/* Various flags */
405 #define  PCI_MSI_FLAGS_64BIT	0x80	/* 64-bit addresses allowed */
406 #define  PCI_MSI_FLAGS_QSIZE	0x70	/* Message queue size configured */
407 #define  PCI_MSI_FLAGS_QMASK	0x0e	/* Maximum queue size available */
408 #define  PCI_MSI_FLAGS_ENABLE	0x01	/* MSI feature enabled */
409 #define PCI_MSI_RFU		3	/* Rest of capability flags */
410 #define PCI_MSI_ADDRESS_LO	4	/* Lower 32 bits */
411 #define PCI_MSI_ADDRESS_HI	8	/* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */
412 #define PCI_MSI_DATA_32		8	/* 16 bits of data for 32-bit devices */
413 #define PCI_MSI_DATA_64		12	/* 16 bits of data for 64-bit devices */
414 
415 #define PCI_MAX_PCI_DEVICES	32
416 #define PCI_MAX_PCI_FUNCTIONS	8
417 
418 #define PCI_FIND_CAP_TTL 0x48
419 #define CAP_START_POS 0x40
420 
421 /* Extended Capabilities (PCI-X 2.0 and Express) */
422 #define PCI_EXT_CAP_ID(header)		(header & 0x0000ffff)
423 #define PCI_EXT_CAP_VER(header)		((header >> 16) & 0xf)
424 #define PCI_EXT_CAP_NEXT(header)	((header >> 20) & 0xffc)
425 
426 #define PCI_EXT_CAP_ID_ERR	0x01	/* Advanced Error Reporting */
427 #define PCI_EXT_CAP_ID_VC	0x02	/* Virtual Channel Capability */
428 #define PCI_EXT_CAP_ID_DSN	0x03	/* Device Serial Number */
429 #define PCI_EXT_CAP_ID_PWR	0x04	/* Power Budgeting */
430 #define PCI_EXT_CAP_ID_RCLD	0x05	/* Root Complex Link Declaration */
431 #define PCI_EXT_CAP_ID_RCILC	0x06	/* Root Complex Internal Link Control */
432 #define PCI_EXT_CAP_ID_RCEC	0x07	/* Root Complex Event Collector */
433 #define PCI_EXT_CAP_ID_MFVC	0x08	/* Multi-Function VC Capability */
434 #define PCI_EXT_CAP_ID_VC9	0x09	/* same as _VC */
435 #define PCI_EXT_CAP_ID_RCRB	0x0A	/* Root Complex RB? */
436 #define PCI_EXT_CAP_ID_VNDR	0x0B	/* Vendor-Specific */
437 #define PCI_EXT_CAP_ID_CAC	0x0C	/* Config Access - obsolete */
438 #define PCI_EXT_CAP_ID_ACS	0x0D	/* Access Control Services */
439 #define PCI_EXT_CAP_ID_ARI	0x0E	/* Alternate Routing ID */
440 #define PCI_EXT_CAP_ID_ATS	0x0F	/* Address Translation Services */
441 #define PCI_EXT_CAP_ID_SRIOV	0x10	/* Single Root I/O Virtualization */
442 #define PCI_EXT_CAP_ID_MRIOV	0x11	/* Multi Root I/O Virtualization */
443 #define PCI_EXT_CAP_ID_MCAST	0x12	/* Multicast */
444 #define PCI_EXT_CAP_ID_PRI	0x13	/* Page Request Interface */
445 #define PCI_EXT_CAP_ID_AMD_XXX	0x14	/* Reserved for AMD */
446 #define PCI_EXT_CAP_ID_REBAR	0x15	/* Resizable BAR */
447 #define PCI_EXT_CAP_ID_DPA	0x16	/* Dynamic Power Allocation */
448 #define PCI_EXT_CAP_ID_TPH	0x17	/* TPH Requester */
449 #define PCI_EXT_CAP_ID_LTR	0x18	/* Latency Tolerance Reporting */
450 #define PCI_EXT_CAP_ID_SECPCI	0x19	/* Secondary PCIe Capability */
451 #define PCI_EXT_CAP_ID_PMUX	0x1A	/* Protocol Multiplexing */
452 #define PCI_EXT_CAP_ID_PASID	0x1B	/* Process Address Space ID */
453 
454 /* Include the ID list */
455 
456 #include <pci_ids.h>
457 
458 #ifndef __ASSEMBLY__
459 
460 #ifdef CONFIG_SYS_PCI_64BIT
461 typedef u64 pci_addr_t;
462 typedef u64 pci_size_t;
463 #else
464 typedef u32 pci_addr_t;
465 typedef u32 pci_size_t;
466 #endif
467 
468 struct pci_region {
469 	pci_addr_t bus_start;	/* Start on the bus */
470 	phys_addr_t phys_start;	/* Start in physical address space */
471 	pci_size_t size;	/* Size */
472 	unsigned long flags;	/* Resource flags */
473 
474 	pci_addr_t bus_lower;
475 };
476 
477 #define PCI_REGION_MEM		0x00000000	/* PCI memory space */
478 #define PCI_REGION_IO		0x00000001	/* PCI IO space */
479 #define PCI_REGION_TYPE		0x00000001
480 #define PCI_REGION_PREFETCH	0x00000008	/* prefetchable PCI memory */
481 
482 #define PCI_REGION_SYS_MEMORY	0x00000100	/* System memory */
483 #define PCI_REGION_RO		0x00000200	/* Read-only memory */
484 
485 static inline void pci_set_region(struct pci_region *reg,
486 				      pci_addr_t bus_start,
487 				      phys_addr_t phys_start,
488 				      pci_size_t size,
489 				      unsigned long flags) {
490 	reg->bus_start	= bus_start;
491 	reg->phys_start = phys_start;
492 	reg->size	= size;
493 	reg->flags	= flags;
494 }
495 
496 typedef int pci_dev_t;
497 
498 #define PCI_BUS(d)		(((d) >> 16) & 0xff)
499 #define PCI_DEV(d)		(((d) >> 11) & 0x1f)
500 #define PCI_FUNC(d)		(((d) >> 8) & 0x7)
501 #define PCI_DEVFN(d, f)		((d) << 11 | (f) << 8)
502 #define PCI_MASK_BUS(bdf)	((bdf) & 0xffff)
503 #define PCI_ADD_BUS(bus, devfn)	(((bus) << 16) | (devfn))
504 #define PCI_BDF(b, d, f)	((b) << 16 | PCI_DEVFN(d, f))
505 #define PCI_VENDEV(v, d)	(((v) << 16) | (d))
506 #define PCI_ANY_ID		(~0)
507 
508 struct pci_device_id {
509 	unsigned int vendor, device;	/* Vendor and device ID or PCI_ANY_ID */
510 	unsigned int subvendor, subdevice; /* Subsystem ID's or PCI_ANY_ID */
511 	unsigned int class, class_mask;	/* (class,subclass,prog-if) triplet */
512 	unsigned long driver_data;	/* Data private to the driver */
513 };
514 
515 struct pci_controller;
516 
517 struct pci_config_table {
518 	unsigned int vendor, device;		/* Vendor and device ID or PCI_ANY_ID */
519 	unsigned int class;			/* Class ID, or  PCI_ANY_ID */
520 	unsigned int bus;			/* Bus number, or PCI_ANY_ID */
521 	unsigned int dev;			/* Device number, or PCI_ANY_ID */
522 	unsigned int func;			/* Function number, or PCI_ANY_ID */
523 
524 	void (*config_device)(struct pci_controller* hose, pci_dev_t dev,
525 			      struct pci_config_table *);
526 	unsigned long priv[3];
527 };
528 
529 extern void pci_cfgfunc_do_nothing(struct pci_controller* hose, pci_dev_t dev,
530 				   struct pci_config_table *);
531 extern void pci_cfgfunc_config_device(struct pci_controller* hose, pci_dev_t dev,
532 				      struct pci_config_table *);
533 
534 #define MAX_PCI_REGIONS		7
535 
536 #define INDIRECT_TYPE_NO_PCIE_LINK	1
537 
538 /*
539  * Structure of a PCI controller (host bridge)
540  *
541  * With driver model this is dev_get_uclass_priv(bus)
542  */
543 struct pci_controller {
544 #ifdef CONFIG_DM_PCI
545 	struct udevice *bus;
546 	struct udevice *ctlr;
547 #else
548 	struct pci_controller *next;
549 #endif
550 
551 	int first_busno;
552 	int last_busno;
553 
554 	volatile unsigned int *cfg_addr;
555 	volatile unsigned char *cfg_data;
556 
557 	int indirect_type;
558 
559 	/*
560 	 * TODO(sjg@chromium.org): With driver model we use struct
561 	 * pci_controller for both the controller and any bridge devices
562 	 * attached to it. But there is only one region list and it is in the
563 	 * top-level controller.
564 	 *
565 	 * This could be changed so that struct pci_controller is only used
566 	 * for PCI controllers and a separate UCLASS (or perhaps
567 	 * UCLASS_PCI_GENERIC) is used for bridges.
568 	 */
569 	struct pci_region regions[MAX_PCI_REGIONS];
570 	int region_count;
571 
572 	struct pci_config_table *config_table;
573 
574 	void (*fixup_irq)(struct pci_controller *, pci_dev_t);
575 #ifndef CONFIG_DM_PCI
576 	/* Low-level architecture-dependent routines */
577 	int (*read_byte)(struct pci_controller*, pci_dev_t, int where, u8 *);
578 	int (*read_word)(struct pci_controller*, pci_dev_t, int where, u16 *);
579 	int (*read_dword)(struct pci_controller*, pci_dev_t, int where, u32 *);
580 	int (*write_byte)(struct pci_controller*, pci_dev_t, int where, u8);
581 	int (*write_word)(struct pci_controller*, pci_dev_t, int where, u16);
582 	int (*write_dword)(struct pci_controller*, pci_dev_t, int where, u32);
583 #endif
584 
585 	/* Used by auto config */
586 	struct pci_region *pci_mem, *pci_io, *pci_prefetch;
587 
588 	/* Used by ppc405 autoconfig*/
589 	struct pci_region *pci_fb;
590 #ifndef CONFIG_DM_PCI
591 	int current_busno;
592 
593 	void *priv_data;
594 #endif
595 };
596 
597 #ifndef CONFIG_DM_PCI
598 static inline void pci_set_ops(struct pci_controller *hose,
599 				   int (*read_byte)(struct pci_controller*,
600 						    pci_dev_t, int where, u8 *),
601 				   int (*read_word)(struct pci_controller*,
602 						    pci_dev_t, int where, u16 *),
603 				   int (*read_dword)(struct pci_controller*,
604 						     pci_dev_t, int where, u32 *),
605 				   int (*write_byte)(struct pci_controller*,
606 						     pci_dev_t, int where, u8),
607 				   int (*write_word)(struct pci_controller*,
608 						     pci_dev_t, int where, u16),
609 				   int (*write_dword)(struct pci_controller*,
610 						      pci_dev_t, int where, u32)) {
611 	hose->read_byte   = read_byte;
612 	hose->read_word   = read_word;
613 	hose->read_dword  = read_dword;
614 	hose->write_byte  = write_byte;
615 	hose->write_word  = write_word;
616 	hose->write_dword = write_dword;
617 }
618 #endif
619 
620 #ifdef CONFIG_PCI_INDIRECT_BRIDGE
621 extern void pci_setup_indirect(struct pci_controller* hose, u32 cfg_addr, u32 cfg_data);
622 #endif
623 
624 #if !defined(CONFIG_DM_PCI) || defined(CONFIG_DM_PCI_COMPAT)
625 extern phys_addr_t pci_hose_bus_to_phys(struct pci_controller* hose,
626 					pci_addr_t addr, unsigned long flags);
627 extern pci_addr_t pci_hose_phys_to_bus(struct pci_controller* hose,
628 					phys_addr_t addr, unsigned long flags);
629 
630 #define pci_phys_to_bus(dev, addr, flags) \
631 	pci_hose_phys_to_bus(pci_bus_to_hose(PCI_BUS(dev)), (addr), (flags))
632 #define pci_bus_to_phys(dev, addr, flags) \
633 	pci_hose_bus_to_phys(pci_bus_to_hose(PCI_BUS(dev)), (addr), (flags))
634 
635 #define pci_virt_to_bus(dev, addr, flags) \
636 	pci_hose_phys_to_bus(pci_bus_to_hose(PCI_BUS(dev)), \
637 			     (virt_to_phys(addr)), (flags))
638 #define pci_bus_to_virt(dev, addr, flags, len, map_flags) \
639 	map_physmem(pci_hose_bus_to_phys(pci_bus_to_hose(PCI_BUS(dev)), \
640 					 (addr), (flags)), \
641 		    (len), (map_flags))
642 
643 #define pci_phys_to_mem(dev, addr) \
644 	pci_phys_to_bus((dev), (addr), PCI_REGION_MEM)
645 #define pci_mem_to_phys(dev, addr) \
646 	pci_bus_to_phys((dev), (addr), PCI_REGION_MEM)
647 #define pci_phys_to_io(dev, addr)  pci_phys_to_bus((dev), (addr), PCI_REGION_IO)
648 #define pci_io_to_phys(dev, addr)  pci_bus_to_phys((dev), (addr), PCI_REGION_IO)
649 
650 #define pci_virt_to_mem(dev, addr) \
651 	pci_virt_to_bus((dev), (addr), PCI_REGION_MEM)
652 #define pci_mem_to_virt(dev, addr, len, map_flags) \
653 	pci_bus_to_virt((dev), (addr), PCI_REGION_MEM, (len), (map_flags))
654 #define pci_virt_to_io(dev, addr) \
655 	pci_virt_to_bus((dev), (addr), PCI_REGION_IO)
656 #define pci_io_to_virt(dev, addr, len, map_flags) \
657 	pci_bus_to_virt((dev), (addr), PCI_REGION_IO, (len), (map_flags))
658 
659 /* For driver model these are defined in macros in pci_compat.c */
660 extern int pci_hose_read_config_byte(struct pci_controller *hose,
661 				     pci_dev_t dev, int where, u8 *val);
662 extern int pci_hose_read_config_word(struct pci_controller *hose,
663 				     pci_dev_t dev, int where, u16 *val);
664 extern int pci_hose_read_config_dword(struct pci_controller *hose,
665 				      pci_dev_t dev, int where, u32 *val);
666 extern int pci_hose_write_config_byte(struct pci_controller *hose,
667 				      pci_dev_t dev, int where, u8 val);
668 extern int pci_hose_write_config_word(struct pci_controller *hose,
669 				      pci_dev_t dev, int where, u16 val);
670 extern int pci_hose_write_config_dword(struct pci_controller *hose,
671 				       pci_dev_t dev, int where, u32 val);
672 #endif
673 
674 #ifndef CONFIG_DM_PCI
675 extern int pci_read_config_byte(pci_dev_t dev, int where, u8 *val);
676 extern int pci_read_config_word(pci_dev_t dev, int where, u16 *val);
677 extern int pci_read_config_dword(pci_dev_t dev, int where, u32 *val);
678 extern int pci_write_config_byte(pci_dev_t dev, int where, u8 val);
679 extern int pci_write_config_word(pci_dev_t dev, int where, u16 val);
680 extern int pci_write_config_dword(pci_dev_t dev, int where, u32 val);
681 #endif
682 
683 void pciauto_region_init(struct pci_region *res);
684 void pciauto_region_align(struct pci_region *res, pci_size_t size);
685 void pciauto_config_init(struct pci_controller *hose);
686 int pciauto_region_allocate(struct pci_region *res, pci_size_t size,
687 			    pci_addr_t *bar);
688 
689 #if !defined(CONFIG_DM_PCI) || defined(CONFIG_DM_PCI_COMPAT)
690 extern int pci_hose_read_config_byte_via_dword(struct pci_controller *hose,
691 					       pci_dev_t dev, int where, u8 *val);
692 extern int pci_hose_read_config_word_via_dword(struct pci_controller *hose,
693 					       pci_dev_t dev, int where, u16 *val);
694 extern int pci_hose_write_config_byte_via_dword(struct pci_controller *hose,
695 						pci_dev_t dev, int where, u8 val);
696 extern int pci_hose_write_config_word_via_dword(struct pci_controller *hose,
697 						pci_dev_t dev, int where, u16 val);
698 
699 extern void *pci_map_bar(pci_dev_t pdev, int bar, int flags);
700 extern void pci_register_hose(struct pci_controller* hose);
701 extern struct pci_controller* pci_bus_to_hose(int bus);
702 extern struct pci_controller *find_hose_by_cfg_addr(void *cfg_addr);
703 extern struct pci_controller *pci_get_hose_head(void);
704 
705 extern int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev);
706 extern int pci_hose_scan(struct pci_controller *hose);
707 extern int pci_hose_scan_bus(struct pci_controller *hose, int bus);
708 
709 extern void pciauto_setup_device(struct pci_controller *hose,
710 				 pci_dev_t dev, int bars_num,
711 				 struct pci_region *mem,
712 				 struct pci_region *prefetch,
713 				 struct pci_region *io);
714 extern void pciauto_prescan_setup_bridge(struct pci_controller *hose,
715 				 pci_dev_t dev, int sub_bus);
716 extern void pciauto_postscan_setup_bridge(struct pci_controller *hose,
717 				 pci_dev_t dev, int sub_bus);
718 extern int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev);
719 
720 extern pci_dev_t pci_find_device (unsigned int vendor, unsigned int device, int index);
721 extern pci_dev_t pci_find_devices (struct pci_device_id *ids, int index);
722 pci_dev_t pci_find_class(unsigned int find_class, int index);
723 
724 extern int pci_hose_config_device(struct pci_controller *hose,
725 				  pci_dev_t dev,
726 				  unsigned long io,
727 				  pci_addr_t mem,
728 				  unsigned long command);
729 
730 extern int pci_hose_find_capability(struct pci_controller *hose, pci_dev_t dev,
731 				    int cap);
732 extern int pci_hose_find_cap_start(struct pci_controller *hose, pci_dev_t dev,
733 				   u8 hdr_type);
734 extern int pci_find_cap(struct pci_controller *hose, pci_dev_t dev, int pos,
735 			int cap);
736 
737 int pci_find_next_ext_capability(struct pci_controller *hose,
738 				 pci_dev_t dev, int start, int cap);
739 int pci_hose_find_ext_capability(struct pci_controller *hose,
740 				 pci_dev_t dev, int cap);
741 
742 #ifdef CONFIG_PCI_FIXUP_DEV
743 extern void board_pci_fixup_dev(struct pci_controller *hose, pci_dev_t dev,
744 				unsigned short vendor,
745 				unsigned short device,
746 				unsigned short class);
747 #endif
748 #endif /* !defined(CONFIG_DM_PCI) || defined(CONFIG_DM_PCI_COMPAT) */
749 
750 const char * pci_class_str(u8 class);
751 int pci_last_busno(void);
752 
753 #ifdef CONFIG_MPC85xx
754 extern void pci_mpc85xx_init (struct pci_controller *hose);
755 #endif
756 
757 #if !defined(CONFIG_DM_PCI) || defined(CONFIG_DM_PCI_COMPAT)
758 /**
759  * pci_write_bar32() - Write the address of a BAR including control bits
760  *
761  * This writes a raw address (with control bits) to a bar. This can be used
762  * with devices which require hard-coded addresses, not part of the normal
763  * PCI enumeration process.
764  *
765  * @hose:	PCI hose to use
766  * @dev:	PCI device to update
767  * @barnum:	BAR number (0-5)
768  * @addr:	BAR address with control bits
769  */
770 void pci_write_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum,
771 		     u32 addr);
772 
773 /**
774  * pci_read_bar32() - read the address of a bar
775  *
776  * @hose:	PCI hose to use
777  * @dev:	PCI device to inspect
778  * @barnum:	BAR number (0-5)
779  * @return address of the bar, masking out any control bits
780  * */
781 u32 pci_read_bar32(struct pci_controller *hose, pci_dev_t dev, int barnum);
782 
783 /**
784  * pci_hose_find_devices() - Find devices by vendor/device ID
785  *
786  * @hose:	PCI hose to search
787  * @busnum:	Bus number to search
788  * @ids:	PCI vendor/device IDs to look for, terminated by 0, 0 record
789  * @indexp:	Pointer to device index to find. To find the first matching
790  *		device, pass 0; to find the second, pass 1, etc. This
791  *		parameter is decremented for each non-matching device so
792  *		can be called repeatedly.
793  */
794 pci_dev_t pci_hose_find_devices(struct pci_controller *hose, int busnum,
795 				struct pci_device_id *ids, int *indexp);
796 #endif /* !CONFIG_DM_PCI || CONFIG_DM_PCI_COMPAT */
797 
798 /* Access sizes for PCI reads and writes */
799 enum pci_size_t {
800 	PCI_SIZE_8,
801 	PCI_SIZE_16,
802 	PCI_SIZE_32,
803 };
804 
805 struct udevice;
806 
807 #ifdef CONFIG_DM_PCI
808 /**
809  * struct pci_child_platdata - information stored about each PCI device
810  *
811  * Every device on a PCI bus has this per-child data.
812  *
813  * It can be accessed using dev_get_parent_priv(dev) if dev->parent is a
814  * PCI bus (i.e. UCLASS_PCI)
815  *
816  * @devfn:	Encoded device and function index - see PCI_DEVFN()
817  * @vendor:	PCI vendor ID (see pci_ids.h)
818  * @device:	PCI device ID (see pci_ids.h)
819  * @class:	PCI class, 3 bytes: (base, sub, prog-if)
820  */
821 struct pci_child_platdata {
822 	int devfn;
823 	unsigned short vendor;
824 	unsigned short device;
825 	unsigned int class;
826 };
827 
828 /* PCI bus operations */
829 struct dm_pci_ops {
830 	/**
831 	 * read_config() - Read a PCI configuration value
832 	 *
833 	 * PCI buses must support reading and writing configuration values
834 	 * so that the bus can be scanned and its devices configured.
835 	 *
836 	 * Normally PCI_BUS(@bdf) is the same as @bus->seq, but not always.
837 	 * If bridges exist it is possible to use the top-level bus to
838 	 * access a sub-bus. In that case @bus will be the top-level bus
839 	 * and PCI_BUS(bdf) will be a different (higher) value
840 	 *
841 	 * @bus:	Bus to read from
842 	 * @bdf:	Bus, device and function to read
843 	 * @offset:	Byte offset within the device's configuration space
844 	 * @valuep:	Place to put the returned value
845 	 * @size:	Access size
846 	 * @return 0 if OK, -ve on error
847 	 */
848 	int (*read_config)(struct udevice *bus, pci_dev_t bdf, uint offset,
849 			   ulong *valuep, enum pci_size_t size);
850 	/**
851 	 * write_config() - Write a PCI configuration value
852 	 *
853 	 * @bus:	Bus to write to
854 	 * @bdf:	Bus, device and function to write
855 	 * @offset:	Byte offset within the device's configuration space
856 	 * @value:	Value to write
857 	 * @size:	Access size
858 	 * @return 0 if OK, -ve on error
859 	 */
860 	int (*write_config)(struct udevice *bus, pci_dev_t bdf, uint offset,
861 			    ulong value, enum pci_size_t size);
862 };
863 
864 /* Get access to a PCI bus' operations */
865 #define pci_get_ops(dev)	((struct dm_pci_ops *)(dev)->driver->ops)
866 
867 /**
868  * dm_pci_get_bdf() - Get the BDF value for a device
869  *
870  * @dev:	Device to check
871  * @return bus/device/function value (see PCI_BDF())
872  */
873 pci_dev_t dm_pci_get_bdf(struct udevice *dev);
874 
875 /**
876  * pci_bind_bus_devices() - scan a PCI bus and bind devices
877  *
878  * Scan a PCI bus looking for devices. Bind each one that is found. If
879  * devices are already bound that match the scanned devices, just update the
880  * child data so that the device can be used correctly (this happens when
881  * the device tree describes devices we expect to see on the bus).
882  *
883  * Devices that are bound in this way will use a generic PCI driver which
884  * does nothing. The device can still be accessed but will not provide any
885  * driver interface.
886  *
887  * @bus:	Bus containing devices to bind
888  * @return 0 if OK, -ve on error
889  */
890 int pci_bind_bus_devices(struct udevice *bus);
891 
892 /**
893  * pci_auto_config_devices() - configure bus devices ready for use
894  *
895  * This works through all devices on a bus by scanning the driver model
896  * data structures (normally these have been set up by pci_bind_bus_devices()
897  * earlier).
898  *
899  * Space is allocated for each PCI base address register (BAR) so that the
900  * devices are mapped into memory and I/O space ready for use.
901  *
902  * @bus:	Bus containing devices to bind
903  * @return 0 if OK, -ve on error
904  */
905 int pci_auto_config_devices(struct udevice *bus);
906 
907 /**
908  * dm_pci_bus_find_bdf() - Find a device given its PCI bus address
909  *
910  * @bdf:	PCI device address: bus, device and function -see PCI_BDF()
911  * @devp:	Returns the device for this address, if found
912  * @return 0 if OK, -ENODEV if not found
913  */
914 int dm_pci_bus_find_bdf(pci_dev_t bdf, struct udevice **devp);
915 
916 /**
917  * pci_bus_find_devfn() - Find a device on a bus
918  *
919  * @find_devfn:		PCI device address (device and function only)
920  * @devp:	Returns the device for this address, if found
921  * @return 0 if OK, -ENODEV if not found
922  */
923 int pci_bus_find_devfn(struct udevice *bus, pci_dev_t find_devfn,
924 		       struct udevice **devp);
925 
926 /**
927  * pci_find_first_device() - return the first available PCI device
928  *
929  * This function and pci_find_first_device() allow iteration through all
930  * available PCI devices on all buses. Assuming there are any, this will
931  * return the first one.
932  *
933  * @devp:	Set to the first available device, or NULL if no more are left
934  *		or we got an error
935  * @return 0 if all is OK, -ve on error (e.g. a bus/bridge failed to probe)
936  */
937 int pci_find_first_device(struct udevice **devp);
938 
939 /**
940  * pci_find_next_device() - return the next available PCI device
941  *
942  * Finds the next available PCI device after the one supplied, or sets @devp
943  * to NULL if there are no more.
944  *
945  * @devp:	On entry, the last device returned. Set to the next available
946  *		device, or NULL if no more are left or we got an error
947  * @return 0 if all is OK, -ve on error (e.g. a bus/bridge failed to probe)
948  */
949 int pci_find_next_device(struct udevice **devp);
950 
951 /**
952  * pci_get_ff() - Returns a mask for the given access size
953  *
954  * @size:	Access size
955  * @return 0xff for PCI_SIZE_8, 0xffff for PCI_SIZE_16, 0xffffffff for
956  * PCI_SIZE_32
957  */
958 int pci_get_ff(enum pci_size_t size);
959 
960 /**
961  * pci_bus_find_devices () - Find devices on a bus
962  *
963  * @bus:	Bus to search
964  * @ids:	PCI vendor/device IDs to look for, terminated by 0, 0 record
965  * @indexp:	Pointer to device index to find. To find the first matching
966  *		device, pass 0; to find the second, pass 1, etc. This
967  *		parameter is decremented for each non-matching device so
968  *		can be called repeatedly.
969  * @devp:	Returns matching device if found
970  * @return 0 if found, -ENODEV if not
971  */
972 int pci_bus_find_devices(struct udevice *bus, struct pci_device_id *ids,
973 			 int *indexp, struct udevice **devp);
974 
975 /**
976  * pci_find_device_id() - Find a device on any bus
977  *
978  * @ids:	PCI vendor/device IDs to look for, terminated by 0, 0 record
979  * @index:	Index number of device to find, 0 for the first match, 1 for
980  *		the second, etc.
981  * @devp:	Returns matching device if found
982  * @return 0 if found, -ENODEV if not
983  */
984 int pci_find_device_id(struct pci_device_id *ids, int index,
985 		       struct udevice **devp);
986 
987 /**
988  * dm_pci_hose_probe_bus() - probe a subordinate bus, scanning it for devices
989  *
990  * This probes the given bus which causes it to be scanned for devices. The
991  * devices will be bound but not probed.
992  *
993  * @hose specifies the PCI hose that will be used for the scan. This is
994  * always a top-level bus with uclass UCLASS_PCI. The bus to scan is
995  * in @bdf, and is a subordinate bus reachable from @hose.
996  *
997  * @hose:	PCI hose to scan
998  * @bdf:	PCI bus address to scan (PCI_BUS(bdf) is the bus number)
999  * @return 0 if OK, -ve on error
1000  */
1001 int dm_pci_hose_probe_bus(struct udevice *bus);
1002 
1003 /**
1004  * pci_bus_read_config() - Read a configuration value from a device
1005  *
1006  * TODO(sjg@chromium.org): We should be able to pass just a device and have
1007  * it do the right thing. It would be good to have that function also.
1008  *
1009  * @bus:	Bus to read from
1010  * @bdf:	PCI device address: bus, device and function -see PCI_BDF()
1011  * @offset:	Register offset to read
1012  * @valuep:	Place to put the returned value
1013  * @size:	Access size
1014  * @return 0 if OK, -ve on error
1015  */
1016 int pci_bus_read_config(struct udevice *bus, pci_dev_t bdf, int offset,
1017 			unsigned long *valuep, enum pci_size_t size);
1018 
1019 /**
1020  * pci_bus_write_config() - Write a configuration value to a device
1021  *
1022  * @bus:	Bus to write from
1023  * @bdf:	PCI device address: bus, device and function -see PCI_BDF()
1024  * @offset:	Register offset to write
1025  * @value:	Value to write
1026  * @size:	Access size
1027  * @return 0 if OK, -ve on error
1028  */
1029 int pci_bus_write_config(struct udevice *bus, pci_dev_t bdf, int offset,
1030 			 unsigned long value, enum pci_size_t size);
1031 
1032 /**
1033  * pci_bus_clrset_config32() - Update a configuration value for a device
1034  *
1035  * The register at @offset is updated to (oldvalue & ~clr) | set.
1036  *
1037  * @bus:	Bus to access
1038  * @bdf:	PCI device address: bus, device and function -see PCI_BDF()
1039  * @offset:	Register offset to update
1040  * @clr:	Bits to clear
1041  * @set:	Bits to set
1042  * @return 0 if OK, -ve on error
1043  */
1044 int pci_bus_clrset_config32(struct udevice *bus, pci_dev_t bdf, int offset,
1045 			    u32 clr, u32 set);
1046 
1047 /**
1048  * Driver model PCI config access functions. Use these in preference to others
1049  * when you have a valid device
1050  */
1051 int dm_pci_read_config(struct udevice *dev, int offset, unsigned long *valuep,
1052 		       enum pci_size_t size);
1053 
1054 int dm_pci_read_config8(struct udevice *dev, int offset, u8 *valuep);
1055 int dm_pci_read_config16(struct udevice *dev, int offset, u16 *valuep);
1056 int dm_pci_read_config32(struct udevice *dev, int offset, u32 *valuep);
1057 
1058 int dm_pci_write_config(struct udevice *dev, int offset, unsigned long value,
1059 			enum pci_size_t size);
1060 
1061 int dm_pci_write_config8(struct udevice *dev, int offset, u8 value);
1062 int dm_pci_write_config16(struct udevice *dev, int offset, u16 value);
1063 int dm_pci_write_config32(struct udevice *dev, int offset, u32 value);
1064 
1065 /**
1066  * These permit convenient read/modify/write on PCI configuration. The
1067  * register is updated to (oldvalue & ~clr) | set.
1068  */
1069 int dm_pci_clrset_config8(struct udevice *dev, int offset, u32 clr, u32 set);
1070 int dm_pci_clrset_config16(struct udevice *dev, int offset, u32 clr, u32 set);
1071 int dm_pci_clrset_config32(struct udevice *dev, int offset, u32 clr, u32 set);
1072 
1073 /*
1074  * The following functions provide access to the above without needing the
1075  * size parameter. We are trying to encourage the use of the 8/16/32-style
1076  * functions, rather than byte/word/dword. But both are supported.
1077  */
1078 int pci_write_config32(pci_dev_t pcidev, int offset, u32 value);
1079 int pci_write_config16(pci_dev_t pcidev, int offset, u16 value);
1080 int pci_write_config8(pci_dev_t pcidev, int offset, u8 value);
1081 int pci_read_config32(pci_dev_t pcidev, int offset, u32 *valuep);
1082 int pci_read_config16(pci_dev_t pcidev, int offset, u16 *valuep);
1083 int pci_read_config8(pci_dev_t pcidev, int offset, u8 *valuep);
1084 
1085 #ifdef CONFIG_DM_PCI_COMPAT
1086 /* Compatibility with old naming */
1087 static inline int pci_write_config_dword(pci_dev_t pcidev, int offset,
1088 					 u32 value)
1089 {
1090 	return pci_write_config32(pcidev, offset, value);
1091 }
1092 
1093 /* Compatibility with old naming */
1094 static inline int pci_write_config_word(pci_dev_t pcidev, int offset,
1095 					u16 value)
1096 {
1097 	return pci_write_config16(pcidev, offset, value);
1098 }
1099 
1100 /* Compatibility with old naming */
1101 static inline int pci_write_config_byte(pci_dev_t pcidev, int offset,
1102 					u8 value)
1103 {
1104 	return pci_write_config8(pcidev, offset, value);
1105 }
1106 
1107 /* Compatibility with old naming */
1108 static inline int pci_read_config_dword(pci_dev_t pcidev, int offset,
1109 					u32 *valuep)
1110 {
1111 	return pci_read_config32(pcidev, offset, valuep);
1112 }
1113 
1114 /* Compatibility with old naming */
1115 static inline int pci_read_config_word(pci_dev_t pcidev, int offset,
1116 				       u16 *valuep)
1117 {
1118 	return pci_read_config16(pcidev, offset, valuep);
1119 }
1120 
1121 /* Compatibility with old naming */
1122 static inline int pci_read_config_byte(pci_dev_t pcidev, int offset,
1123 				       u8 *valuep)
1124 {
1125 	return pci_read_config8(pcidev, offset, valuep);
1126 }
1127 #endif /* CONFIG_DM_PCI_COMPAT */
1128 
1129 /**
1130  * dm_pciauto_config_device() - configure a device ready for use
1131  *
1132  * Space is allocated for each PCI base address register (BAR) so that the
1133  * devices are mapped into memory and I/O space ready for use.
1134  *
1135  * @dev:	Device to configure
1136  * @return 0 if OK, -ve on error
1137  */
1138 int dm_pciauto_config_device(struct udevice *dev);
1139 
1140 /**
1141  * pci_conv_32_to_size() - convert a 32-bit read value to the given size
1142  *
1143  * Some PCI buses must always perform 32-bit reads. The data must then be
1144  * shifted and masked to reflect the required access size and offset. This
1145  * function performs this transformation.
1146  *
1147  * @value:	Value to transform (32-bit value read from @offset & ~3)
1148  * @offset:	Register offset that was read
1149  * @size:	Required size of the result
1150  * @return the value that would have been obtained if the read had been
1151  * performed at the given offset with the correct size
1152  */
1153 ulong pci_conv_32_to_size(ulong value, uint offset, enum pci_size_t size);
1154 
1155 /**
1156  * pci_conv_size_to_32() - update a 32-bit value to prepare for a write
1157  *
1158  * Some PCI buses must always perform 32-bit writes. To emulate a smaller
1159  * write the old 32-bit data must be read, updated with the required new data
1160  * and written back as a 32-bit value. This function performs the
1161  * transformation from the old value to the new value.
1162  *
1163  * @value:	Value to transform (32-bit value read from @offset & ~3)
1164  * @offset:	Register offset that should be written
1165  * @size:	Required size of the write
1166  * @return the value that should be written as a 32-bit access to @offset & ~3.
1167  */
1168 ulong pci_conv_size_to_32(ulong old, ulong value, uint offset,
1169 			  enum pci_size_t size);
1170 
1171 /**
1172  * pci_get_controller() - obtain the controller to use for a bus
1173  *
1174  * @dev:	Device to check
1175  * @return pointer to the controller device for this bus
1176  */
1177 struct udevice *pci_get_controller(struct udevice *dev);
1178 
1179 /**
1180  * pci_get_regions() - obtain pointers to all the region types
1181  *
1182  * @dev:	Device to check
1183  * @iop:	Returns a pointer to the I/O region, or NULL if none
1184  * @memp:	Returns a pointer to the memory region, or NULL if none
1185  * @prefp:	Returns a pointer to the pre-fetch region, or NULL if none
1186  * @return the number of non-NULL regions returned, normally 3
1187  */
1188 int pci_get_regions(struct udevice *dev, struct pci_region **iop,
1189 		    struct pci_region **memp, struct pci_region **prefp);
1190 
1191 /**
1192  * dm_pci_write_bar32() - Write the address of a BAR
1193  *
1194  * This writes a raw address to a bar
1195  *
1196  * @dev:	PCI device to update
1197  * @barnum:	BAR number (0-5)
1198  * @addr:	BAR address
1199  */
1200 void dm_pci_write_bar32(struct udevice *dev, int barnum, u32 addr);
1201 
1202 /**
1203  * dm_pci_read_bar32() - read a base address register from a device
1204  *
1205  * @dev:	Device to check
1206  * @barnum:	Bar number to read (numbered from 0)
1207  * @return: value of BAR
1208  */
1209 u32 dm_pci_read_bar32(struct udevice *dev, int barnum);
1210 
1211 /**
1212  * dm_pci_bus_to_phys() - convert a PCI bus address to a physical address
1213  *
1214  * @dev:	Device containing the PCI address
1215  * @addr:	PCI address to convert
1216  * @flags:	Flags for the region type (PCI_REGION_...)
1217  * @return physical address corresponding to that PCI bus address
1218  */
1219 phys_addr_t dm_pci_bus_to_phys(struct udevice *dev, pci_addr_t addr,
1220 			       unsigned long flags);
1221 
1222 /**
1223  * dm_pci_phys_to_bus() - convert a physical address to a PCI bus address
1224  *
1225  * @dev:	Device containing the bus address
1226  * @addr:	Physical address to convert
1227  * @flags:	Flags for the region type (PCI_REGION_...)
1228  * @return PCI bus address corresponding to that physical address
1229  */
1230 pci_addr_t dm_pci_phys_to_bus(struct udevice *dev, phys_addr_t addr,
1231 			      unsigned long flags);
1232 
1233 /**
1234  * dm_pci_map_bar() - get a virtual address associated with a BAR region
1235  *
1236  * Looks up a base address register and finds the physical memory address
1237  * that corresponds to it
1238  *
1239  * @dev:	Device to check
1240  * @bar:	Bar number to read (numbered from 0)
1241  * @flags:	Flags for the region type (PCI_REGION_...)
1242  * @return: pointer to the virtual address to use
1243  */
1244 void *dm_pci_map_bar(struct udevice *dev, int bar, int flags);
1245 
1246 #define dm_pci_virt_to_bus(dev, addr, flags) \
1247 	dm_pci_phys_to_bus(dev, (virt_to_phys(addr)), (flags))
1248 #define dm_pci_bus_to_virt(dev, addr, flags, len, map_flags) \
1249 	map_physmem(dm_pci_bus_to_phys(dev, (addr), (flags)), \
1250 		    (len), (map_flags))
1251 
1252 #define dm_pci_phys_to_mem(dev, addr) \
1253 	dm_pci_phys_to_bus((dev), (addr), PCI_REGION_MEM)
1254 #define dm_pci_mem_to_phys(dev, addr) \
1255 	dm_pci_bus_to_phys((dev), (addr), PCI_REGION_MEM)
1256 #define dm_pci_phys_to_io(dev, addr) \
1257 	dm_pci_phys_to_bus((dev), (addr), PCI_REGION_IO)
1258 #define dm_pci_io_to_phys(dev, addr) \
1259 	dm_pci_bus_to_phys((dev), (addr), PCI_REGION_IO)
1260 
1261 #define dm_pci_virt_to_mem(dev, addr) \
1262 	dm_pci_virt_to_bus((dev), (addr), PCI_REGION_MEM)
1263 #define dm_pci_mem_to_virt(dev, addr, len, map_flags) \
1264 	dm_pci_bus_to_virt((dev), (addr), PCI_REGION_MEM, (len), (map_flags))
1265 #define dm_pci_virt_to_io(dev, addr) \
1266 	dm_pci_virt_to_bus((dev), (addr), PCI_REGION_IO)
1267 #define dm_pci_io_to_virt(dev, addr, len, map_flags) \
1268 	dm_pci_bus_to_virt((dev), (addr), PCI_REGION_IO, (len), (map_flags))
1269 
1270 /**
1271  * dm_pci_find_device() - find a device by vendor/device ID
1272  *
1273  * @vendor:	Vendor ID
1274  * @device:	Device ID
1275  * @index:	0 to find the first match, 1 for second, etc.
1276  * @devp:	Returns pointer to the device, if found
1277  * @return 0 if found, -ve on error
1278  */
1279 int dm_pci_find_device(unsigned int vendor, unsigned int device, int index,
1280 		       struct udevice **devp);
1281 
1282 /**
1283  * dm_pci_find_class() - find a device by class
1284  *
1285  * @find_class: 3-byte (24-bit) class value to find
1286  * @index:	0 to find the first match, 1 for second, etc.
1287  * @devp:	Returns pointer to the device, if found
1288  * @return 0 if found, -ve on error
1289  */
1290 int dm_pci_find_class(uint find_class, int index, struct udevice **devp);
1291 
1292 /**
1293  * struct dm_pci_emul_ops - PCI device emulator operations
1294  */
1295 struct dm_pci_emul_ops {
1296 	/**
1297 	 * get_devfn(): Check which device and function this emulators
1298 	 *
1299 	 * @dev:	device to check
1300 	 * @return the device and function this emulates, or -ve on error
1301 	 */
1302 	int (*get_devfn)(struct udevice *dev);
1303 	/**
1304 	 * read_config() - Read a PCI configuration value
1305 	 *
1306 	 * @dev:	Emulated device to read from
1307 	 * @offset:	Byte offset within the device's configuration space
1308 	 * @valuep:	Place to put the returned value
1309 	 * @size:	Access size
1310 	 * @return 0 if OK, -ve on error
1311 	 */
1312 	int (*read_config)(struct udevice *dev, uint offset, ulong *valuep,
1313 			   enum pci_size_t size);
1314 	/**
1315 	 * write_config() - Write a PCI configuration value
1316 	 *
1317 	 * @dev:	Emulated device to write to
1318 	 * @offset:	Byte offset within the device's configuration space
1319 	 * @value:	Value to write
1320 	 * @size:	Access size
1321 	 * @return 0 if OK, -ve on error
1322 	 */
1323 	int (*write_config)(struct udevice *dev, uint offset, ulong value,
1324 			    enum pci_size_t size);
1325 	/**
1326 	 * read_io() - Read a PCI I/O value
1327 	 *
1328 	 * @dev:	Emulated device to read from
1329 	 * @addr:	I/O address to read
1330 	 * @valuep:	Place to put the returned value
1331 	 * @size:	Access size
1332 	 * @return 0 if OK, -ENOENT if @addr is not mapped by this device,
1333 	 *		other -ve value on error
1334 	 */
1335 	int (*read_io)(struct udevice *dev, unsigned int addr, ulong *valuep,
1336 		       enum pci_size_t size);
1337 	/**
1338 	 * write_io() - Write a PCI I/O value
1339 	 *
1340 	 * @dev:	Emulated device to write from
1341 	 * @addr:	I/O address to write
1342 	 * @value:	Value to write
1343 	 * @size:	Access size
1344 	 * @return 0 if OK, -ENOENT if @addr is not mapped by this device,
1345 	 *		other -ve value on error
1346 	 */
1347 	int (*write_io)(struct udevice *dev, unsigned int addr,
1348 			ulong value, enum pci_size_t size);
1349 	/**
1350 	 * map_physmem() - Map a device into sandbox memory
1351 	 *
1352 	 * @dev:	Emulated device to map
1353 	 * @addr:	Memory address, normally corresponding to a PCI BAR.
1354 	 *		The device should have been configured to have a BAR
1355 	 *		at this address.
1356 	 * @lenp:	On entry, the size of the area to map, On exit it is
1357 	 *		updated to the size actually mapped, which may be less
1358 	 *		if the device has less space
1359 	 * @ptrp:	Returns a pointer to the mapped address. The device's
1360 	 *		space can be accessed as @lenp bytes starting here
1361 	 * @return 0 if OK, -ENOENT if @addr is not mapped by this device,
1362 	 *		other -ve value on error
1363 	 */
1364 	int (*map_physmem)(struct udevice *dev, phys_addr_t addr,
1365 			   unsigned long *lenp, void **ptrp);
1366 	/**
1367 	 * unmap_physmem() - undo a memory mapping
1368 	 *
1369 	 * This must be called after map_physmem() to undo the mapping.
1370 	 * Some devices can use this to check what has been written into
1371 	 * their mapped memory and perform an operations they require on it.
1372 	 * In this way, map/unmap can be used as a sort of handshake between
1373 	 * the emulated device and its users.
1374 	 *
1375 	 * @dev:	Emuated device to unmap
1376 	 * @vaddr:	Mapped memory address, as passed to map_physmem()
1377 	 * @len:	Size of area mapped, as returned by map_physmem()
1378 	 * @return 0 if OK, -ve on error
1379 	 */
1380 	int (*unmap_physmem)(struct udevice *dev, const void *vaddr,
1381 			     unsigned long len);
1382 };
1383 
1384 /* Get access to a PCI device emulator's operations */
1385 #define pci_get_emul_ops(dev)	((struct dm_pci_emul_ops *)(dev)->driver->ops)
1386 
1387 /**
1388  * sandbox_pci_get_emul() - Get the emulation device for a PCI device
1389  *
1390  * Searches for a suitable emulator for the given PCI bus device
1391  *
1392  * @bus:	PCI bus to search
1393  * @find_devfn:	PCI device and function address (PCI_DEVFN())
1394  * @emulp:	Returns emulated device if found
1395  * @return 0 if found, -ENODEV if not found
1396  */
1397 int sandbox_pci_get_emul(struct udevice *bus, pci_dev_t find_devfn,
1398 			 struct udevice **emulp);
1399 
1400 #endif /* CONFIG_DM_PCI */
1401 
1402 /**
1403  * PCI_DEVICE - macro used to describe a specific pci device
1404  * @vend: the 16 bit PCI Vendor ID
1405  * @dev: the 16 bit PCI Device ID
1406  *
1407  * This macro is used to create a struct pci_device_id that matches a
1408  * specific device.  The subvendor and subdevice fields will be set to
1409  * PCI_ANY_ID.
1410  */
1411 #define PCI_DEVICE(vend, dev) \
1412 	.vendor = (vend), .device = (dev), \
1413 	.subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
1414 
1415 /**
1416  * PCI_DEVICE_SUB - macro used to describe a specific pci device with subsystem
1417  * @vend: the 16 bit PCI Vendor ID
1418  * @dev: the 16 bit PCI Device ID
1419  * @subvend: the 16 bit PCI Subvendor ID
1420  * @subdev: the 16 bit PCI Subdevice ID
1421  *
1422  * This macro is used to create a struct pci_device_id that matches a
1423  * specific device with subsystem information.
1424  */
1425 #define PCI_DEVICE_SUB(vend, dev, subvend, subdev) \
1426 	.vendor = (vend), .device = (dev), \
1427 	.subvendor = (subvend), .subdevice = (subdev)
1428 
1429 /**
1430  * PCI_DEVICE_CLASS - macro used to describe a specific pci device class
1431  * @dev_class: the class, subclass, prog-if triple for this device
1432  * @dev_class_mask: the class mask for this device
1433  *
1434  * This macro is used to create a struct pci_device_id that matches a
1435  * specific PCI class.  The vendor, device, subvendor, and subdevice
1436  * fields will be set to PCI_ANY_ID.
1437  */
1438 #define PCI_DEVICE_CLASS(dev_class, dev_class_mask) \
1439 	.class = (dev_class), .class_mask = (dev_class_mask), \
1440 	.vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \
1441 	.subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
1442 
1443 /**
1444  * PCI_VDEVICE - macro used to describe a specific pci device in short form
1445  * @vend: the vendor name
1446  * @dev: the 16 bit PCI Device ID
1447  *
1448  * This macro is used to create a struct pci_device_id that matches a
1449  * specific PCI device.  The subvendor, and subdevice fields will be set
1450  * to PCI_ANY_ID. The macro allows the next field to follow as the device
1451  * private data.
1452  */
1453 
1454 #define PCI_VDEVICE(vend, dev) \
1455 	.vendor = PCI_VENDOR_ID_##vend, .device = (dev), \
1456 	.subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, 0, 0
1457 
1458 /**
1459  * struct pci_driver_entry - Matches a driver to its pci_device_id list
1460  * @driver: Driver to use
1461  * @match: List of match records for this driver, terminated by {}
1462  */
1463 struct pci_driver_entry {
1464 	struct driver *driver;
1465 	const struct pci_device_id *match;
1466 };
1467 
1468 #define U_BOOT_PCI_DEVICE(__name, __match)				\
1469 	ll_entry_declare(struct pci_driver_entry, __name, pci_driver_entry) = {\
1470 		.driver = llsym(struct driver, __name, driver), \
1471 		.match = __match, \
1472 		}
1473 
1474 #endif /* __ASSEMBLY__ */
1475 #endif /* _PCI_H */
1476