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 * See file CREDITS for list of people who contributed to this
9 * project.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * aloong with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 * MA 02111-1307 USA
25 */
26
27 #ifndef _PCI_H
28 #define _PCI_H
29
30 /*
31 * Under PCI, each device has 256 bytes of configuration address space,
32 * of which the first 64 bytes are standardized as follows:
33 */
34 #define PCI_VENDOR_ID 0x00 /* 16 bits */
35 #define PCI_DEVICE_ID 0x02 /* 16 bits */
36 #define PCI_COMMAND 0x04 /* 16 bits */
37 #define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */
38 #define PCI_COMMAND_MEMORY 0x2 /* Enable response in Memory space */
39 #define PCI_COMMAND_MASTER 0x4 /* Enable bus mastering */
40 #define PCI_COMMAND_SPECIAL 0x8 /* Enable response to special cycles */
41 #define PCI_COMMAND_INVALIDATE 0x10 /* Use memory write and invalidate */
42 #define PCI_COMMAND_VGA_PALETTE 0x20 /* Enable palette snooping */
43 #define PCI_COMMAND_PARITY 0x40 /* Enable parity checking */
44 #define PCI_COMMAND_WAIT 0x80 /* Enable address/data stepping */
45 #define PCI_COMMAND_SERR 0x100 /* Enable SERR */
46 #define PCI_COMMAND_FAST_BACK 0x200 /* Enable back-to-back writes */
47
48 #define PCI_STATUS 0x06 /* 16 bits */
49 #define PCI_STATUS_CAP_LIST 0x10 /* Support Capability List */
50 #define PCI_STATUS_66MHZ 0x20 /* Support 66 Mhz PCI 2.1 bus */
51 #define PCI_STATUS_UDF 0x40 /* Support User Definable Features [obsolete] */
52 #define PCI_STATUS_FAST_BACK 0x80 /* Accept fast-back to back */
53 #define PCI_STATUS_PARITY 0x100 /* Detected parity error */
54 #define PCI_STATUS_DEVSEL_MASK 0x600 /* DEVSEL timing */
55 #define PCI_STATUS_DEVSEL_FAST 0x000
56 #define PCI_STATUS_DEVSEL_MEDIUM 0x200
57 #define PCI_STATUS_DEVSEL_SLOW 0x400
58 #define PCI_STATUS_SIG_TARGET_ABORT 0x800 /* Set on target abort */
59 #define PCI_STATUS_REC_TARGET_ABORT 0x1000 /* Master ack of " */
60 #define PCI_STATUS_REC_MASTER_ABORT 0x2000 /* Set on master abort */
61 #define PCI_STATUS_SIG_SYSTEM_ERROR 0x4000 /* Set when we drive SERR */
62 #define PCI_STATUS_DETECTED_PARITY 0x8000 /* Set on parity error */
63
64 #define PCI_CLASS_REVISION 0x08 /* High 24 bits are class, low 8
65 revision */
66 #define PCI_REVISION_ID 0x08 /* Revision ID */
67 #define PCI_CLASS_PROG 0x09 /* Reg. Level Programming Interface */
68 #define PCI_CLASS_DEVICE 0x0a /* Device class */
69 #define PCI_CLASS_CODE 0x0b /* Device class code */
70 #define PCI_CLASS_SUB_CODE 0x0a /* Device sub-class code */
71
72 #define PCI_CACHE_LINE_SIZE 0x0c /* 8 bits */
73 #define PCI_LATENCY_TIMER 0x0d /* 8 bits */
74 #define PCI_HEADER_TYPE 0x0e /* 8 bits */
75 #define PCI_HEADER_TYPE_NORMAL 0
76 #define PCI_HEADER_TYPE_BRIDGE 1
77 #define PCI_HEADER_TYPE_CARDBUS 2
78
79 #define PCI_BIST 0x0f /* 8 bits */
80 #define PCI_BIST_CODE_MASK 0x0f /* Return result */
81 #define PCI_BIST_START 0x40 /* 1 to start BIST, 2 secs or less */
82 #define PCI_BIST_CAPABLE 0x80 /* 1 if BIST capable */
83
84 /*
85 * Base addresses specify locations in memory or I/O space.
86 * Decoded size can be determined by writing a value of
87 * 0xffffffff to the register, and reading it back. Only
88 * 1 bits are decoded.
89 */
90 #define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */
91 #define PCI_BASE_ADDRESS_1 0x14 /* 32 bits [htype 0,1 only] */
92 #define PCI_BASE_ADDRESS_2 0x18 /* 32 bits [htype 0 only] */
93 #define PCI_BASE_ADDRESS_3 0x1c /* 32 bits */
94 #define PCI_BASE_ADDRESS_4 0x20 /* 32 bits */
95 #define PCI_BASE_ADDRESS_5 0x24 /* 32 bits */
96 #define PCI_BASE_ADDRESS_SPACE 0x01 /* 0 = memory, 1 = I/O */
97 #define PCI_BASE_ADDRESS_SPACE_IO 0x01
98 #define PCI_BASE_ADDRESS_SPACE_MEMORY 0x00
99 #define PCI_BASE_ADDRESS_MEM_TYPE_MASK 0x06
100 #define PCI_BASE_ADDRESS_MEM_TYPE_32 0x00 /* 32 bit address */
101 #define PCI_BASE_ADDRESS_MEM_TYPE_1M 0x02 /* Below 1M [obsolete] */
102 #define PCI_BASE_ADDRESS_MEM_TYPE_64 0x04 /* 64 bit address */
103 #define PCI_BASE_ADDRESS_MEM_PREFETCH 0x08 /* prefetchable? */
104 #define PCI_BASE_ADDRESS_MEM_MASK (~0x0fULL)
105 #define PCI_BASE_ADDRESS_IO_MASK (~0x03ULL)
106 /* bit 1 is reserved if address_space = 1 */
107
108 /* Header type 0 (normal devices) */
109 #define PCI_CARDBUS_CIS 0x28
110 #define PCI_SUBSYSTEM_VENDOR_ID 0x2c
111 #define PCI_SUBSYSTEM_ID 0x2e
112 #define PCI_ROM_ADDRESS 0x30 /* Bits 31..11 are address, 10..1 reserved */
113 #define PCI_ROM_ADDRESS_ENABLE 0x01
114 #define PCI_ROM_ADDRESS_MASK (~0x7ffULL)
115
116 #define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */
117
118 /* 0x35-0x3b are reserved */
119 #define PCI_INTERRUPT_LINE 0x3c /* 8 bits */
120 #define PCI_INTERRUPT_PIN 0x3d /* 8 bits */
121 #define PCI_MIN_GNT 0x3e /* 8 bits */
122 #define PCI_MAX_LAT 0x3f /* 8 bits */
123
124 /* Header type 1 (PCI-to-PCI bridges) */
125 #define PCI_PRIMARY_BUS 0x18 /* Primary bus number */
126 #define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */
127 #define PCI_SUBORDINATE_BUS 0x1a /* Highest bus number behind the bridge */
128 #define PCI_SEC_LATENCY_TIMER 0x1b /* Latency timer for secondary interface */
129 #define PCI_IO_BASE 0x1c /* I/O range behind the bridge */
130 #define PCI_IO_LIMIT 0x1d
131 #define PCI_IO_RANGE_TYPE_MASK 0x0f /* I/O bridging type */
132 #define PCI_IO_RANGE_TYPE_16 0x00
133 #define PCI_IO_RANGE_TYPE_32 0x01
134 #define PCI_IO_RANGE_MASK ~0x0f
135 #define PCI_SEC_STATUS 0x1e /* Secondary status register, only bit 14 used */
136 #define PCI_MEMORY_BASE 0x20 /* Memory range behind */
137 #define PCI_MEMORY_LIMIT 0x22
138 #define PCI_MEMORY_RANGE_TYPE_MASK 0x0f
139 #define PCI_MEMORY_RANGE_MASK ~0x0f
140 #define PCI_PREF_MEMORY_BASE 0x24 /* Prefetchable memory range behind */
141 #define PCI_PREF_MEMORY_LIMIT 0x26
142 #define PCI_PREF_RANGE_TYPE_MASK 0x0f
143 #define PCI_PREF_RANGE_TYPE_32 0x00
144 #define PCI_PREF_RANGE_TYPE_64 0x01
145 #define PCI_PREF_RANGE_MASK ~0x0f
146 #define PCI_PREF_BASE_UPPER32 0x28 /* Upper half of prefetchable memory range */
147 #define PCI_PREF_LIMIT_UPPER32 0x2c
148 #define PCI_IO_BASE_UPPER16 0x30 /* Upper half of I/O addresses */
149 #define PCI_IO_LIMIT_UPPER16 0x32
150 /* 0x34 same as for htype 0 */
151 /* 0x35-0x3b is reserved */
152 #define PCI_ROM_ADDRESS1 0x38 /* Same as PCI_ROM_ADDRESS, but for htype 1 */
153 /* 0x3c-0x3d are same as for htype 0 */
154 #define PCI_BRIDGE_CONTROL 0x3e
155 #define PCI_BRIDGE_CTL_PARITY 0x01 /* Enable parity detection on secondary interface */
156 #define PCI_BRIDGE_CTL_SERR 0x02 /* The same for SERR forwarding */
157 #define PCI_BRIDGE_CTL_NO_ISA 0x04 /* Disable bridging of ISA ports */
158 #define PCI_BRIDGE_CTL_VGA 0x08 /* Forward VGA addresses */
159 #define PCI_BRIDGE_CTL_MASTER_ABORT 0x20 /* Report master aborts */
160 #define PCI_BRIDGE_CTL_BUS_RESET 0x40 /* Secondary bus reset */
161 #define PCI_BRIDGE_CTL_FAST_BACK 0x80 /* Fast Back2Back enabled on secondary interface */
162
163 /* From 440ep */
164 #define PCI_ERREN 0x48 /* Error Enable */
165 #define PCI_ERRSTS 0x49 /* Error Status */
166 #define PCI_BRDGOPT1 0x4A /* PCI Bridge Options 1 */
167 #define PCI_PLBSESR0 0x4C /* PCI PLB Slave Error Syndrome 0 */
168 #define PCI_PLBSESR1 0x50 /* PCI PLB Slave Error Syndrome 1 */
169 #define PCI_PLBSEAR 0x54 /* PCI PLB Slave Error Address */
170 #define PCI_CAPID 0x58 /* Capability Identifier */
171 #define PCI_NEXTITEMPTR 0x59 /* Next Item Pointer */
172 #define PCI_PMC 0x5A /* Power Management Capabilities */
173 #define PCI_PMCSR 0x5C /* Power Management Control Status */
174 #define PCI_PMCSRBSE 0x5E /* PMCSR PCI to PCI Bridge Support Extensions */
175 #define PCI_BRDGOPT2 0x60 /* PCI Bridge Options 2 */
176 #define PCI_PMSCRR 0x64 /* Power Management State Change Request Re. */
177
178 /* Header type 2 (CardBus bridges) */
179 #define PCI_CB_CAPABILITY_LIST 0x14
180 /* 0x15 reserved */
181 #define PCI_CB_SEC_STATUS 0x16 /* Secondary status */
182 #define PCI_CB_PRIMARY_BUS 0x18 /* PCI bus number */
183 #define PCI_CB_CARD_BUS 0x19 /* CardBus bus number */
184 #define PCI_CB_SUBORDINATE_BUS 0x1a /* Subordinate bus number */
185 #define PCI_CB_LATENCY_TIMER 0x1b /* CardBus latency timer */
186 #define PCI_CB_MEMORY_BASE_0 0x1c
187 #define PCI_CB_MEMORY_LIMIT_0 0x20
188 #define PCI_CB_MEMORY_BASE_1 0x24
189 #define PCI_CB_MEMORY_LIMIT_1 0x28
190 #define PCI_CB_IO_BASE_0 0x2c
191 #define PCI_CB_IO_BASE_0_HI 0x2e
192 #define PCI_CB_IO_LIMIT_0 0x30
193 #define PCI_CB_IO_LIMIT_0_HI 0x32
194 #define PCI_CB_IO_BASE_1 0x34
195 #define PCI_CB_IO_BASE_1_HI 0x36
196 #define PCI_CB_IO_LIMIT_1 0x38
197 #define PCI_CB_IO_LIMIT_1_HI 0x3a
198 #define PCI_CB_IO_RANGE_MASK ~0x03
199 /* 0x3c-0x3d are same as for htype 0 */
200 #define PCI_CB_BRIDGE_CONTROL 0x3e
201 #define PCI_CB_BRIDGE_CTL_PARITY 0x01 /* Similar to standard bridge control register */
202 #define PCI_CB_BRIDGE_CTL_SERR 0x02
203 #define PCI_CB_BRIDGE_CTL_ISA 0x04
204 #define PCI_CB_BRIDGE_CTL_VGA 0x08
205 #define PCI_CB_BRIDGE_CTL_MASTER_ABORT 0x20
206 #define PCI_CB_BRIDGE_CTL_CB_RESET 0x40 /* CardBus reset */
207 #define PCI_CB_BRIDGE_CTL_16BIT_INT 0x80 /* Enable interrupt for 16-bit cards */
208 #define PCI_CB_BRIDGE_CTL_PREFETCH_MEM0 0x100 /* Prefetch enable for both memory regions */
209 #define PCI_CB_BRIDGE_CTL_PREFETCH_MEM1 0x200
210 #define PCI_CB_BRIDGE_CTL_POST_WRITES 0x400
211 #define PCI_CB_SUBSYSTEM_VENDOR_ID 0x40
212 #define PCI_CB_SUBSYSTEM_ID 0x42
213 #define PCI_CB_LEGACY_MODE_BASE 0x44 /* 16-bit PC Card legacy mode base address (ExCa) */
214 /* 0x48-0x7f reserved */
215
216 /* Capability lists */
217
218 #define PCI_CAP_LIST_ID 0 /* Capability ID */
219 #define PCI_CAP_ID_PM 0x01 /* Power Management */
220 #define PCI_CAP_ID_AGP 0x02 /* Accelerated Graphics Port */
221 #define PCI_CAP_ID_VPD 0x03 /* Vital Product Data */
222 #define PCI_CAP_ID_SLOTID 0x04 /* Slot Identification */
223 #define PCI_CAP_ID_MSI 0x05 /* Message Signalled Interrupts */
224 #define PCI_CAP_ID_CHSWP 0x06 /* CompactPCI HotSwap */
225 #define PCI_CAP_ID_EXP 0x10 /* PCI Express */
226 #define PCI_CAP_LIST_NEXT 1 /* Next capability in the list */
227 #define PCI_CAP_FLAGS 2 /* Capability defined flags (16 bits) */
228 #define PCI_CAP_SIZEOF 4
229
230 /* Power Management Registers */
231
232 #define PCI_PM_CAP_VER_MASK 0x0007 /* Version */
233 #define PCI_PM_CAP_PME_CLOCK 0x0008 /* PME clock required */
234 #define PCI_PM_CAP_AUX_POWER 0x0010 /* Auxilliary power support */
235 #define PCI_PM_CAP_DSI 0x0020 /* Device specific initialization */
236 #define PCI_PM_CAP_D1 0x0200 /* D1 power state support */
237 #define PCI_PM_CAP_D2 0x0400 /* D2 power state support */
238 #define PCI_PM_CAP_PME 0x0800 /* PME pin supported */
239 #define PCI_PM_CTRL 4 /* PM control and status register */
240 #define PCI_PM_CTRL_STATE_MASK 0x0003 /* Current power state (D0 to D3) */
241 #define PCI_PM_CTRL_PME_ENABLE 0x0100 /* PME pin enable */
242 #define PCI_PM_CTRL_DATA_SEL_MASK 0x1e00 /* Data select (??) */
243 #define PCI_PM_CTRL_DATA_SCALE_MASK 0x6000 /* Data scale (??) */
244 #define PCI_PM_CTRL_PME_STATUS 0x8000 /* PME pin status */
245 #define PCI_PM_PPB_EXTENSIONS 6 /* PPB support extensions (??) */
246 #define PCI_PM_PPB_B2_B3 0x40 /* Stop clock when in D3hot (??) */
247 #define PCI_PM_BPCC_ENABLE 0x80 /* Bus power/clock control enable (??) */
248 #define PCI_PM_DATA_REGISTER 7 /* (??) */
249 #define PCI_PM_SIZEOF 8
250
251 /* AGP registers */
252
253 #define PCI_AGP_VERSION 2 /* BCD version number */
254 #define PCI_AGP_RFU 3 /* Rest of capability flags */
255 #define PCI_AGP_STATUS 4 /* Status register */
256 #define PCI_AGP_STATUS_RQ_MASK 0xff000000 /* Maximum number of requests - 1 */
257 #define PCI_AGP_STATUS_SBA 0x0200 /* Sideband addressing supported */
258 #define PCI_AGP_STATUS_64BIT 0x0020 /* 64-bit addressing supported */
259 #define PCI_AGP_STATUS_FW 0x0010 /* FW transfers supported */
260 #define PCI_AGP_STATUS_RATE4 0x0004 /* 4x transfer rate supported */
261 #define PCI_AGP_STATUS_RATE2 0x0002 /* 2x transfer rate supported */
262 #define PCI_AGP_STATUS_RATE1 0x0001 /* 1x transfer rate supported */
263 #define PCI_AGP_COMMAND 8 /* Control register */
264 #define PCI_AGP_COMMAND_RQ_MASK 0xff000000 /* Master: Maximum number of requests */
265 #define PCI_AGP_COMMAND_SBA 0x0200 /* Sideband addressing enabled */
266 #define PCI_AGP_COMMAND_AGP 0x0100 /* Allow processing of AGP transactions */
267 #define PCI_AGP_COMMAND_64BIT 0x0020 /* Allow processing of 64-bit addresses */
268 #define PCI_AGP_COMMAND_FW 0x0010 /* Force FW transfers */
269 #define PCI_AGP_COMMAND_RATE4 0x0004 /* Use 4x rate */
270 #define PCI_AGP_COMMAND_RATE2 0x0002 /* Use 4x rate */
271 #define PCI_AGP_COMMAND_RATE1 0x0001 /* Use 4x rate */
272 #define PCI_AGP_SIZEOF 12
273
274 /* PCI-X registers */
275
276 #define PCI_X_CMD_DPERR_E 0x0001 /* Data Parity Error Recovery Enable */
277 #define PCI_X_CMD_ERO 0x0002 /* Enable Relaxed Ordering */
278 #define PCI_X_CMD_MAX_READ 0x0000 /* Max Memory Read Byte Count */
279 #define PCI_X_CMD_MAX_SPLIT 0x0030 /* Max Outstanding Split Transactions */
280 #define PCI_X_CMD_VERSION(x) (((x) >> 12) & 3) /* Version */
281
282
283 /* Slot Identification */
284
285 #define PCI_SID_ESR 2 /* Expansion Slot Register */
286 #define PCI_SID_ESR_NSLOTS 0x1f /* Number of expansion slots available */
287 #define PCI_SID_ESR_FIC 0x20 /* First In Chassis Flag */
288 #define PCI_SID_CHASSIS_NR 3 /* Chassis Number */
289
290 /* Message Signalled Interrupts registers */
291
292 #define PCI_MSI_FLAGS 2 /* Various flags */
293 #define PCI_MSI_FLAGS_64BIT 0x80 /* 64-bit addresses allowed */
294 #define PCI_MSI_FLAGS_QSIZE 0x70 /* Message queue size configured */
295 #define PCI_MSI_FLAGS_QMASK 0x0e /* Maximum queue size available */
296 #define PCI_MSI_FLAGS_ENABLE 0x01 /* MSI feature enabled */
297 #define PCI_MSI_RFU 3 /* Rest of capability flags */
298 #define PCI_MSI_ADDRESS_LO 4 /* Lower 32 bits */
299 #define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */
300 #define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */
301 #define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */
302
303 #define PCI_MAX_PCI_DEVICES 32
304 #define PCI_MAX_PCI_FUNCTIONS 8
305
306 #define PCI_DCR 0x54 /* PCIe Device Control Register */
307 #define PCI_DSR 0x56 /* PCIe Device Status Register */
308 #define PCI_LSR 0x5e /* PCIe Link Status Register */
309 #define PCI_LTSSM 0x404 /* PCIe Link Training, Status State Machine */
310 #define PCI_LTSSM_L0 0x16 /* L0 state */
311
312 /* Include the ID list */
313
314 #include <pci_ids.h>
315
316 #ifdef CONFIG_SYS_PCI_64BIT
317 typedef u64 pci_addr_t;
318 typedef u64 pci_size_t;
319 #else
320 typedef u32 pci_addr_t;
321 typedef u32 pci_size_t;
322 #endif
323
324 struct pci_region {
325 pci_addr_t bus_start; /* Start on the bus */
326 phys_addr_t phys_start; /* Start in physical address space */
327 pci_size_t size; /* Size */
328 unsigned long flags; /* Resource flags */
329
330 pci_addr_t bus_lower;
331 };
332
333 #define PCI_REGION_MEM 0x00000000 /* PCI memory space */
334 #define PCI_REGION_IO 0x00000001 /* PCI IO space */
335 #define PCI_REGION_TYPE 0x00000001
336 #define PCI_REGION_PREFETCH 0x00000008 /* prefetchable PCI memory */
337
338 #define PCI_REGION_SYS_MEMORY 0x00000100 /* System memory */
339 #define PCI_REGION_RO 0x00000200 /* Read-only memory */
340
pci_set_region(struct pci_region * reg,pci_addr_t bus_start,phys_addr_t phys_start,pci_size_t size,unsigned long flags)341 extern __inline__ void pci_set_region(struct pci_region *reg,
342 pci_addr_t bus_start,
343 phys_addr_t phys_start,
344 pci_size_t size,
345 unsigned long flags) {
346 reg->bus_start = bus_start;
347 reg->phys_start = phys_start;
348 reg->size = size;
349 reg->flags = flags;
350 }
351
352 typedef int pci_dev_t;
353
354 #define PCI_BUS(d) (((d) >> 16) & 0xff)
355 #define PCI_DEV(d) (((d) >> 11) & 0x1f)
356 #define PCI_FUNC(d) (((d) >> 8) & 0x7)
357 #define PCI_BDF(b,d,f) ((b) << 16 | (d) << 11 | (f) << 8)
358
359 #define PCI_ANY_ID (~0)
360
361 struct pci_device_id {
362 unsigned int vendor, device; /* Vendor and device ID or PCI_ANY_ID */
363 };
364
365 struct pci_controller;
366
367 struct pci_config_table {
368 unsigned int vendor, device; /* Vendor and device ID or PCI_ANY_ID */
369 unsigned int class; /* Class ID, or PCI_ANY_ID */
370 unsigned int bus; /* Bus number, or PCI_ANY_ID */
371 unsigned int dev; /* Device number, or PCI_ANY_ID */
372 unsigned int func; /* Function number, or PCI_ANY_ID */
373
374 void (*config_device)(struct pci_controller* hose, pci_dev_t dev,
375 struct pci_config_table *);
376 unsigned long priv[3];
377 };
378
379 extern void pci_cfgfunc_do_nothing(struct pci_controller* hose, pci_dev_t dev,
380 struct pci_config_table *);
381 extern void pci_cfgfunc_config_device(struct pci_controller* hose, pci_dev_t dev,
382 struct pci_config_table *);
383
384 #define MAX_PCI_REGIONS 7
385
386 #define INDIRECT_TYPE_NO_PCIE_LINK 1
387
388 /*
389 * Structure of a PCI controller (host bridge)
390 */
391 struct pci_controller {
392 struct pci_controller *next;
393
394 int first_busno;
395 int last_busno;
396
397 volatile unsigned int *cfg_addr;
398 volatile unsigned char *cfg_data;
399
400 int indirect_type;
401
402 struct pci_region regions[MAX_PCI_REGIONS];
403 int region_count;
404
405 struct pci_config_table *config_table;
406
407 void (*fixup_irq)(struct pci_controller *, pci_dev_t);
408
409 /* Low-level architecture-dependent routines */
410 int (*read_byte)(struct pci_controller*, pci_dev_t, int where, u8 *);
411 int (*read_word)(struct pci_controller*, pci_dev_t, int where, u16 *);
412 int (*read_dword)(struct pci_controller*, pci_dev_t, int where, u32 *);
413 int (*write_byte)(struct pci_controller*, pci_dev_t, int where, u8);
414 int (*write_word)(struct pci_controller*, pci_dev_t, int where, u16);
415 int (*write_dword)(struct pci_controller*, pci_dev_t, int where, u32);
416
417 /* Used by auto config */
418 struct pci_region *pci_mem, *pci_io, *pci_prefetch;
419
420 /* Used by ppc405 autoconfig*/
421 struct pci_region *pci_fb;
422 int current_busno;
423 };
424
pci_set_ops(struct pci_controller * hose,int (* read_byte)(struct pci_controller *,pci_dev_t,int where,u8 *),int (* read_word)(struct pci_controller *,pci_dev_t,int where,u16 *),int (* read_dword)(struct pci_controller *,pci_dev_t,int where,u32 *),int (* write_byte)(struct pci_controller *,pci_dev_t,int where,u8),int (* write_word)(struct pci_controller *,pci_dev_t,int where,u16),int (* write_dword)(struct pci_controller *,pci_dev_t,int where,u32))425 extern __inline__ void pci_set_ops(struct pci_controller *hose,
426 int (*read_byte)(struct pci_controller*,
427 pci_dev_t, int where, u8 *),
428 int (*read_word)(struct pci_controller*,
429 pci_dev_t, int where, u16 *),
430 int (*read_dword)(struct pci_controller*,
431 pci_dev_t, int where, u32 *),
432 int (*write_byte)(struct pci_controller*,
433 pci_dev_t, int where, u8),
434 int (*write_word)(struct pci_controller*,
435 pci_dev_t, int where, u16),
436 int (*write_dword)(struct pci_controller*,
437 pci_dev_t, int where, u32)) {
438 hose->read_byte = read_byte;
439 hose->read_word = read_word;
440 hose->read_dword = read_dword;
441 hose->write_byte = write_byte;
442 hose->write_word = write_word;
443 hose->write_dword = write_dword;
444 }
445
446 extern void pci_setup_indirect(struct pci_controller* hose, u32 cfg_addr, u32 cfg_data);
447
448 extern phys_addr_t pci_hose_bus_to_phys(struct pci_controller* hose,
449 pci_addr_t addr, unsigned long flags);
450 extern pci_addr_t pci_hose_phys_to_bus(struct pci_controller* hose,
451 phys_addr_t addr, unsigned long flags);
452
453 #define pci_phys_to_bus(dev, addr, flags) \
454 pci_hose_phys_to_bus(pci_bus_to_hose(PCI_BUS(dev)), (addr), (flags))
455 #define pci_bus_to_phys(dev, addr, flags) \
456 pci_hose_bus_to_phys(pci_bus_to_hose(PCI_BUS(dev)), (addr), (flags))
457
458 #define pci_virt_to_bus(dev, addr, flags) \
459 pci_hose_phys_to_bus(pci_bus_to_hose(PCI_BUS(dev)), \
460 (virt_to_phys(addr)), (flags))
461 #define pci_bus_to_virt(dev, addr, flags, len, map_flags) \
462 map_physmem(pci_hose_bus_to_phys(pci_bus_to_hose(PCI_BUS(dev)), \
463 (addr), (flags)), \
464 (len), (map_flags))
465
466 #define pci_phys_to_mem(dev, addr) \
467 pci_phys_to_bus((dev), (addr), PCI_REGION_MEM)
468 #define pci_mem_to_phys(dev, addr) \
469 pci_bus_to_phys((dev), (addr), PCI_REGION_MEM)
470 #define pci_phys_to_io(dev, addr) pci_phys_to_bus((dev), (addr), PCI_REGION_IO)
471 #define pci_io_to_phys(dev, addr) pci_bus_to_phys((dev), (addr), PCI_REGION_IO)
472
473 #define pci_virt_to_mem(dev, addr) \
474 pci_virt_to_bus((dev), (addr), PCI_REGION_MEM)
475 #define pci_mem_to_virt(dev, addr, len, map_flags) \
476 pci_bus_to_virt((dev), (addr), PCI_REGION_MEM, (len), (map_flags))
477 #define pci_virt_to_io(dev, addr) \
478 pci_virt_to_bus((dev), (addr), PCI_REGION_IO)
479 #define pci_io_to_virt(dev, addr, len, map_flags) \
480 pci_bus_to_virt((dev), (addr), PCI_REGION_IO, (len), (map_flags))
481
482 extern int pci_hose_read_config_byte(struct pci_controller *hose,
483 pci_dev_t dev, int where, u8 *val);
484 extern int pci_hose_read_config_word(struct pci_controller *hose,
485 pci_dev_t dev, int where, u16 *val);
486 extern int pci_hose_read_config_dword(struct pci_controller *hose,
487 pci_dev_t dev, int where, u32 *val);
488 extern int pci_hose_write_config_byte(struct pci_controller *hose,
489 pci_dev_t dev, int where, u8 val);
490 extern int pci_hose_write_config_word(struct pci_controller *hose,
491 pci_dev_t dev, int where, u16 val);
492 extern int pci_hose_write_config_dword(struct pci_controller *hose,
493 pci_dev_t dev, int where, u32 val);
494
495 extern int pci_read_config_byte(pci_dev_t dev, int where, u8 *val);
496 extern int pci_read_config_word(pci_dev_t dev, int where, u16 *val);
497 extern int pci_read_config_dword(pci_dev_t dev, int where, u32 *val);
498 extern int pci_write_config_byte(pci_dev_t dev, int where, u8 val);
499 extern int pci_write_config_word(pci_dev_t dev, int where, u16 val);
500 extern int pci_write_config_dword(pci_dev_t dev, int where, u32 val);
501
502 extern int pci_hose_read_config_byte_via_dword(struct pci_controller *hose,
503 pci_dev_t dev, int where, u8 *val);
504 extern int pci_hose_read_config_word_via_dword(struct pci_controller *hose,
505 pci_dev_t dev, int where, u16 *val);
506 extern int pci_hose_write_config_byte_via_dword(struct pci_controller *hose,
507 pci_dev_t dev, int where, u8 val);
508 extern int pci_hose_write_config_word_via_dword(struct pci_controller *hose,
509 pci_dev_t dev, int where, u16 val);
510
511 extern void *pci_map_bar(pci_dev_t pdev, int bar, int flags);
512 extern void pci_register_hose(struct pci_controller* hose);
513 extern struct pci_controller* pci_bus_to_hose(int bus);
514
515 extern int pci_hose_scan(struct pci_controller *hose);
516 extern int pci_hose_scan_bus(struct pci_controller *hose, int bus);
517
518 extern void pciauto_region_init(struct pci_region* res);
519 extern void pciauto_region_align(struct pci_region *res, pci_size_t size);
520 extern int pciauto_region_allocate(struct pci_region* res, pci_size_t size, pci_addr_t *bar);
521 extern void pciauto_setup_device(struct pci_controller *hose,
522 pci_dev_t dev, int bars_num,
523 struct pci_region *mem,
524 struct pci_region *prefetch,
525 struct pci_region *io);
526 int pciauto_config_device(struct pci_controller *hose, pci_dev_t dev);
527
528 extern pci_dev_t pci_find_device (unsigned int vendor, unsigned int device, int index);
529 extern pci_dev_t pci_find_devices (struct pci_device_id *ids, int index);
530 extern pci_dev_t pci_find_class(int wanted_class, int wanted_sub_code,
531 int wanted_prog_if, int index);
532
533 extern int pci_hose_config_device(struct pci_controller *hose,
534 pci_dev_t dev,
535 unsigned long io,
536 pci_addr_t mem,
537 unsigned long command);
538
539 int pci_last_busno(void);
540
541 #ifdef CONFIG_MPC824X
542 extern void pci_mpc824x_init (struct pci_controller *hose);
543 #endif
544
545 #ifdef CONFIG_MPC85xx
546 extern void pci_mpc85xx_init (struct pci_controller *hose);
547 #endif
548 #endif /* _PCI_H */
549