xref: /dragonfly/sys/bus/pci/pcivar.h (revision e96fb831)
1 /*-
2  * Copyright (c) 1997, Stefan Esser <se@freebsd.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice unmodified, this list of conditions, and the following
10  *    disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  *
26  * $FreeBSD: src/sys/dev/pci/pcivar.h,v 1.80.2.1.4.1 2009/04/15 03:14:26 kensmith Exp $
27  *
28  */
29 
30 #ifndef _PCIVAR_H_
31 #define	_PCIVAR_H_
32 
33 #ifndef _SYS_QUEUE_H_
34 #include <sys/queue.h>
35 #endif
36 
37 /* some PCI bus constants */
38 
39 #define	PCI_DOMAINMAX	65535	/* highest supported domain number */
40 #define	PCI_BUSMAX	255	/* highest supported bus number */
41 #define	PCI_SLOTMAX	31	/* highest supported slot number */
42 #define	PCI_FUNCMAX	7	/* highest supported function number */
43 #define	PCI_REGMAX	255	/* highest supported config register addr. */
44 
45 #define	PCI_MAXMAPS_0	6	/* max. no. of memory/port maps */
46 #define	PCI_MAXMAPS_1	2	/* max. no. of maps for PCI to PCI bridge */
47 #define	PCI_MAXMAPS_2	1	/* max. no. of maps for CardBus bridge */
48 
49 typedef uint64_t pci_addr_t;
50 
51 /* Interesting values for PCI power management */
52 struct pcicfg_pp {
53     uint16_t	pp_cap;		/* PCI power management capabilities */
54     uint8_t	pp_status;	/* config space address of PCI power status reg */
55     uint8_t	pp_pmcsr;	/* config space address of PMCSR reg */
56     uint8_t	pp_data;	/* config space address of PCI power data reg */
57 };
58 
59 struct vpd_readonly {
60     char	keyword[2];
61     char	*value;
62 };
63 
64 struct vpd_write {
65     char	keyword[2];
66     char	*value;
67     int 	start;
68     int 	len;
69 };
70 
71 struct pcicfg_vpd {
72     uint8_t	vpd_reg;	/* base register, + 2 for addr, + 4 data */
73     char	vpd_cached;
74     char	*vpd_ident;	/* string identifier */
75     int 	vpd_rocnt;
76     struct vpd_readonly *vpd_ros;
77     int 	vpd_wcnt;
78     struct vpd_write *vpd_w;
79 };
80 
81 /* Interesting values for PCI MSI */
82 struct pcicfg_msi {
83     uint16_t	msi_ctrl;	/* Message Control */
84     uint8_t	msi_location;	/* Offset of MSI capability registers. */
85     uint8_t	msi_msgnum;	/* Number of messages */
86     int		msi_alloc;	/* Number of allocated messages. */
87     uint64_t	msi_addr;	/* Contents of address register. */
88     uint16_t	msi_data;	/* Contents of data register. */
89     u_int	msi_handlers;
90 };
91 
92 /* Interesting values for PCI MSI-X */
93 struct msix_vector {
94     uint64_t	mv_address;	/* Contents of address register. */
95     uint32_t	mv_data;	/* Contents of data register. */
96     int		mv_irq;
97 };
98 
99 struct msix_table_entry {
100     u_int	mte_vector;	/* 1-based index into msix_vectors array. */
101     u_int	mte_handlers;
102 };
103 
104 struct pcicfg_msix {
105     uint16_t	msix_ctrl;	/* Message Control */
106     uint16_t	msix_msgnum;	/* Number of messages */
107     uint8_t	msix_location;	/* Offset of MSI-X capability registers. */
108     uint8_t	msix_table_bar;	/* BAR containing vector table. */
109     uint8_t	msix_pba_bar;	/* BAR containing PBA. */
110     uint32_t	msix_table_offset;
111     uint32_t	msix_pba_offset;
112     int		msix_alloc;	/* Number of allocated vectors. */
113     int		msix_table_len;	/* Length of virtual table. */
114     struct msix_table_entry *msix_table; /* Virtual table. */
115     struct msix_vector *msix_vectors;	/* Array of allocated vectors. */
116     struct resource *msix_table_res;	/* Resource containing vector table. */
117     struct resource *msix_pba_res;	/* Resource containing PBA. */
118 };
119 
120 /* Interesting values for HyperTransport */
121 struct pcicfg_ht {
122     uint8_t	ht_slave;	/* Non-zero if device is an HT slave. */
123     uint8_t	ht_msimap;	/* Offset of MSI mapping cap registers. */
124     uint16_t	ht_msictrl;	/* MSI mapping control */
125     uint64_t	ht_msiaddr;	/* MSI mapping base address */
126 };
127 
128 /* Interesting values for PCI Express capability */
129 struct pcicfg_expr {
130     uint8_t	expr_ptr;	/* capability ptr */
131     uint16_t	expr_cap;	/* capabilities */
132     uint32_t	expr_slotcap;	/* slot capabilities */
133 };
134 
135 /* Interesting values for PCI-X */
136 struct pcicfg_pcix {
137     uint8_t	pcix_ptr;
138 };
139 
140 /* config header information common to all header types */
141 typedef struct pcicfg {
142     struct device *dev;		/* device which owns this */
143 
144     uint32_t	bar[PCI_MAXMAPS_0]; /* BARs */
145     uint32_t	bios;		/* BIOS mapping */
146 
147     uint16_t	subvendor;	/* card vendor ID */
148     uint16_t	subdevice;	/* card device ID, assigned by card vendor */
149     uint16_t	vendor;		/* chip vendor ID */
150     uint16_t	device;		/* chip device ID, assigned by chip vendor */
151 
152     uint16_t	cmdreg;		/* disable/enable chip and PCI options */
153     uint16_t	statreg;	/* supported PCI features and error state */
154 
155     uint8_t	baseclass;	/* chip PCI class */
156     uint8_t	subclass;	/* chip PCI subclass */
157     uint8_t	progif;		/* chip PCI programming interface */
158     uint8_t	revid;		/* chip revision ID */
159 
160     uint8_t	hdrtype;	/* chip config header type */
161     uint8_t	cachelnsz;	/* cache line size in 4byte units */
162     uint8_t	intpin;		/* PCI interrupt pin */
163     uint8_t	intline;	/* interrupt line (IRQ for PC arch) */
164 
165     uint8_t	mingnt;		/* min. useful bus grant time in 250ns units */
166     uint8_t	maxlat;		/* max. tolerated bus grant latency in 250ns */
167     uint8_t	lattimer;	/* latency timer in units of 30ns bus cycles */
168 
169     uint8_t	mfdev;		/* multi-function device (from hdrtype reg) */
170     uint8_t	nummaps;	/* actual number of PCI maps used */
171 
172     uint32_t	domain;		/* PCI domain */
173     uint8_t	bus;		/* config space bus address */
174     uint8_t	slot;		/* config space slot address */
175     uint8_t	func;		/* config space function number */
176 
177 #ifdef COMPAT_OLDPCI
178     uint8_t	secondarybus;	/* bus on secondary side of bridge, if any */
179 #else
180     uint8_t	dummy;
181 #endif
182 
183     struct pcicfg_pp pp;	/* pci power management */
184     struct pcicfg_vpd vpd;	/* pci vital product data */
185     struct pcicfg_msi msi;	/* pci msi */
186     struct pcicfg_msix msix;	/* pci msi-x */
187     struct pcicfg_ht ht;	/* HyperTransport */
188     struct pcicfg_expr expr;	/* PCI Express */
189     struct pcicfg_pcix pcix;	/* PCI-X */
190 } pcicfgregs;
191 
192 /* additional type 1 device config header information (PCI to PCI bridge) */
193 
194 #define	PCI_PPBMEMBASE(h,l)  ((((pci_addr_t)(h) << 32) + ((l)<<16)) & ~0xfffff)
195 #define	PCI_PPBMEMLIMIT(h,l) ((((pci_addr_t)(h) << 32) + ((l)<<16)) | 0xfffff)
196 #define	PCI_PPBIOBASE(h,l)   ((((h)<<16) + ((l)<<8)) & ~0xfff)
197 #define	PCI_PPBIOLIMIT(h,l)  ((((h)<<16) + ((l)<<8)) | 0xfff)
198 
199 typedef struct {
200     pci_addr_t	pmembase;	/* base address of prefetchable memory */
201     pci_addr_t	pmemlimit;	/* topmost address of prefetchable memory */
202     uint32_t	membase;	/* base address of memory window */
203     uint32_t	memlimit;	/* topmost address of memory window */
204     uint32_t	iobase;		/* base address of port window */
205     uint32_t	iolimit;	/* topmost address of port window */
206     uint16_t	secstat;	/* secondary bus status register */
207     uint16_t	bridgectl;	/* bridge control register */
208     uint8_t	seclat;		/* CardBus latency timer */
209 } pcih1cfgregs;
210 
211 /* additional type 2 device config header information (CardBus bridge) */
212 
213 typedef struct {
214     uint32_t	membase0;	/* base address of memory window */
215     uint32_t	memlimit0;	/* topmost address of memory window */
216     uint32_t	membase1;	/* base address of memory window */
217     uint32_t	memlimit1;	/* topmost address of memory window */
218     uint32_t	iobase0;	/* base address of port window */
219     uint32_t	iolimit0;	/* topmost address of port window */
220     uint32_t	iobase1;	/* base address of port window */
221     uint32_t	iolimit1;	/* topmost address of port window */
222     uint32_t	pccardif;	/* PC Card 16bit IF legacy more base addr. */
223     uint16_t	secstat;	/* secondary bus status register */
224     uint16_t	bridgectl;	/* bridge control register */
225     uint8_t	seclat;		/* CardBus latency timer */
226 } pcih2cfgregs;
227 
228 extern uint32_t pci_numdevs;
229 
230 /* Only if the prerequisites are present */
231 #if defined(_SYS_BUS_H_) && defined(_SYS_PCIIO_H_)
232 struct pci_devinfo {
233         STAILQ_ENTRY(pci_devinfo) pci_links;
234 	struct resource_list resources;
235 	pcicfgregs		cfg;
236 	struct pci_conf		conf;
237 };
238 #endif
239 
240 #ifdef _SYS_BUS_H_
241 
242 #include "pci_if.h"
243 
244 /*
245  * Define pci-specific resource flags for accessing memory via dense
246  * or bwx memory spaces. These flags are ignored on i386.
247  */
248 #define	PCI_RF_DENSE	0x10000
249 #define	PCI_RF_BWX	0x20000
250 
251 enum pci_device_ivars {
252     PCI_IVAR_SUBVENDOR,
253     PCI_IVAR_SUBDEVICE,
254     PCI_IVAR_VENDOR,
255     PCI_IVAR_DEVICE,
256     PCI_IVAR_DEVID,
257     PCI_IVAR_CLASS,
258     PCI_IVAR_SUBCLASS,
259     PCI_IVAR_PROGIF,
260     PCI_IVAR_REVID,
261     PCI_IVAR_INTPIN,
262     PCI_IVAR_IRQ,
263     PCI_IVAR_DOMAIN,
264     PCI_IVAR_BUS,
265     PCI_IVAR_SLOT,
266     PCI_IVAR_FUNCTION,
267     PCI_IVAR_ETHADDR,
268     PCI_IVAR_CMDREG,
269     PCI_IVAR_CACHELNSZ,
270     PCI_IVAR_MINGNT,
271     PCI_IVAR_MAXLAT,
272     PCI_IVAR_LATTIMER,
273     PCI_IVAR_PCIXCAP_PTR,
274     PCI_IVAR_PCIECAP_PTR,
275     PCI_IVAR_VPDCAP_PTR
276 };
277 
278 /*
279  * Simplified accessors for pci devices
280  */
281 #define	PCI_ACCESSOR(var, ivar, type)					\
282 	__BUS_ACCESSOR(pci, var, PCI, ivar, type)
283 
284 PCI_ACCESSOR(subvendor,		SUBVENDOR,	uint16_t)
285 PCI_ACCESSOR(subdevice,		SUBDEVICE,	uint16_t)
286 PCI_ACCESSOR(vendor,		VENDOR,		uint16_t)
287 PCI_ACCESSOR(device,		DEVICE,		uint16_t)
288 PCI_ACCESSOR(devid,		DEVID,		uint32_t)
289 PCI_ACCESSOR(class,		CLASS,		uint8_t)
290 PCI_ACCESSOR(subclass,		SUBCLASS,	uint8_t)
291 PCI_ACCESSOR(progif,		PROGIF,		uint8_t)
292 PCI_ACCESSOR(revid,		REVID,		uint8_t)
293 PCI_ACCESSOR(intpin,		INTPIN,		uint8_t)
294 PCI_ACCESSOR(irq,		IRQ,		uint8_t)
295 PCI_ACCESSOR(domain,		DOMAIN,		uint32_t)
296 PCI_ACCESSOR(bus,		BUS,		uint8_t)
297 PCI_ACCESSOR(slot,		SLOT,		uint8_t)
298 PCI_ACCESSOR(function,		FUNCTION,	uint8_t)
299 PCI_ACCESSOR(ether,		ETHADDR,	uint8_t *)
300 PCI_ACCESSOR(cmdreg,		CMDREG,		uint8_t)
301 PCI_ACCESSOR(cachelnsz,		CACHELNSZ,	uint8_t)
302 PCI_ACCESSOR(mingnt,		MINGNT,		uint8_t)
303 PCI_ACCESSOR(maxlat,		MAXLAT,		uint8_t)
304 PCI_ACCESSOR(lattimer,		LATTIMER,	uint8_t)
305 PCI_ACCESSOR(pcixcap_ptr,	PCIXCAP_PTR,	uint8_t)
306 PCI_ACCESSOR(pciecap_ptr,	PCIECAP_PTR,	uint8_t)
307 PCI_ACCESSOR(vpdcap_ptr,	VPDCAP_PTR,	uint8_t)
308 
309 #undef PCI_ACCESSOR
310 
311 /*
312  * Operations on configuration space.
313  */
314 static __inline uint32_t
315 pci_read_config(device_t dev, int reg, int width)
316 {
317     return PCI_READ_CONFIG(device_get_parent(dev), dev, reg, width);
318 }
319 
320 static __inline void
321 pci_write_config(device_t dev, int reg, uint32_t val, int width)
322 {
323     PCI_WRITE_CONFIG(device_get_parent(dev), dev, reg, val, width);
324 }
325 
326 /*
327  * Ivars for pci bridges.
328  */
329 
330 /*typedef enum pci_device_ivars pcib_device_ivars;*/
331 enum pcib_device_ivars {
332 	PCIB_IVAR_DOMAIN,
333 	PCIB_IVAR_BUS
334 };
335 
336 #define	PCIB_ACCESSOR(var, ivar, type)					 \
337     __BUS_ACCESSOR(pcib, var, PCIB, ivar, type)
338 
339 PCIB_ACCESSOR(domain,		DOMAIN,		uint32_t)
340 PCIB_ACCESSOR(bus,		BUS,		uint32_t)
341 
342 #undef PCIB_ACCESSOR
343 
344 /*
345  * PCI interrupt validation.  Invalid interrupt values such as 0 or 128
346  * on i386 or other platforms should be mapped out in the MD pcireadconf
347  * code and not here, since the only MI invalid IRQ is 255.
348  */
349 #define	PCI_INVALID_IRQ		255
350 #define	PCI_INTERRUPT_VALID(x)	((x) != PCI_INVALID_IRQ)
351 
352 /*
353  * Convenience functions.
354  *
355  * These should be used in preference to manually manipulating
356  * configuration space.
357  */
358 static __inline int
359 pci_enable_busmaster(device_t dev)
360 {
361     return(PCI_ENABLE_BUSMASTER(device_get_parent(dev), dev));
362 }
363 
364 static __inline int
365 pci_disable_busmaster(device_t dev)
366 {
367     return(PCI_DISABLE_BUSMASTER(device_get_parent(dev), dev));
368 }
369 
370 static __inline int
371 pci_enable_io(device_t dev, int space)
372 {
373     return(PCI_ENABLE_IO(device_get_parent(dev), dev, space));
374 }
375 
376 static __inline int
377 pci_disable_io(device_t dev, int space)
378 {
379     return(PCI_DISABLE_IO(device_get_parent(dev), dev, space));
380 }
381 
382 static __inline int
383 pci_get_vpd_ident(device_t dev, const char **identptr)
384 {
385     return(PCI_GET_VPD_IDENT(device_get_parent(dev), dev, identptr));
386 }
387 
388 static __inline int
389 pci_get_vpd_readonly(device_t dev, const char *kw, const char **identptr)
390 {
391     return(PCI_GET_VPD_READONLY(device_get_parent(dev), dev, kw, identptr));
392 }
393 
394 /*
395  * Check if the address range falls within the VGA defined address range(s)
396  */
397 static __inline int
398 pci_is_vga_ioport_range(u_long start, u_long end)
399 {
400 
401 	return (((start >= 0x3b0 && end <= 0x3bb) ||
402 	    (start >= 0x3c0 && end <= 0x3df)) ? 1 : 0);
403 }
404 
405 static __inline int
406 pci_is_vga_memory_range(u_long start, u_long end)
407 {
408 
409 	return ((start >= 0xa0000 && end <= 0xbffff) ? 1 : 0);
410 }
411 
412 int pcie_slot_implemented(device_t);
413 void pcie_set_max_readrq(device_t, uint16_t);
414 uint16_t pcie_get_max_readrq(device_t);
415 
416 /*
417  * PCI power states are as defined by ACPI:
418  *
419  * D0	State in which device is on and running.  It is receiving full
420  *	power from the system and delivering full functionality to the user.
421  * D1	Class-specific low-power state in which device context may or may not
422  *	be lost.  Buses in D1 cannot do anything to the bus that would force
423  *	devices on that bus to lose context.
424  * D2	Class-specific low-power state in which device context may or may
425  *	not be lost.  Attains greater power savings than D1.  Buses in D2
426  *	can cause devices on that bus to lose some context.  Devices in D2
427  *	must be prepared for the bus to be in D2 or higher.
428  * D3	State in which the device is off and not running.  Device context is
429  *	lost.  Power can be removed from the device.
430  */
431 #define	PCI_POWERSTATE_D0	0
432 #define	PCI_POWERSTATE_D1	1
433 #define	PCI_POWERSTATE_D2	2
434 #define	PCI_POWERSTATE_D3	3
435 #define	PCI_POWERSTATE_UNKNOWN	-1
436 
437 static __inline int
438 pci_set_powerstate(device_t dev, int state)
439 {
440     return PCI_SET_POWERSTATE(device_get_parent(dev), dev, state);
441 }
442 
443 static __inline int
444 pci_get_powerstate(device_t dev)
445 {
446     return PCI_GET_POWERSTATE(device_get_parent(dev), dev);
447 }
448 
449 static __inline int
450 pci_find_extcap(device_t dev, int capability, int *capreg)
451 {
452     return PCI_FIND_EXTCAP(device_get_parent(dev), dev, capability, capreg);
453 }
454 
455 static __inline int
456 pci_is_pcie(device_t dev)
457 {
458 	return (pci_get_pciecap_ptr(dev) != 0);
459 }
460 
461 static __inline int
462 pci_is_pcix(device_t dev)
463 {
464 	return (pci_get_pcixcap_ptr(dev) != 0);
465 }
466 
467 static __inline int
468 pci_alloc_msi(device_t dev, int *rid, int count, int cpuid)
469 {
470     return (PCI_ALLOC_MSI(device_get_parent(dev), dev, rid, count, cpuid));
471 }
472 
473 static __inline int
474 pci_alloc_msix(device_t dev, int *count)
475 {
476     return (PCI_ALLOC_MSIX(device_get_parent(dev), dev, count));
477 }
478 
479 static __inline int
480 pci_remap_msix(device_t dev, int count, const u_int *vectors)
481 {
482     return (PCI_REMAP_MSIX(device_get_parent(dev), dev, count, vectors));
483 }
484 
485 static __inline int
486 pci_release_msi(device_t dev)
487 {
488     return (PCI_RELEASE_MSI(device_get_parent(dev), dev));
489 }
490 
491 static __inline int
492 pci_msi_count(device_t dev)
493 {
494     return (PCI_MSI_COUNT(device_get_parent(dev), dev));
495 }
496 
497 static __inline int
498 pci_msix_count(device_t dev)
499 {
500     return (PCI_MSIX_COUNT(device_get_parent(dev), dev));
501 }
502 
503 device_t pci_find_bsf(uint8_t, uint8_t, uint8_t);
504 device_t pci_find_dbsf(uint32_t, uint8_t, uint8_t, uint8_t);
505 device_t pci_find_device(uint16_t, uint16_t);
506 
507 /*
508  * Can be used by MD code to request the PCI bus to re-map an MSI or
509  * MSI-X message.
510  */
511 int	pci_remap_msi_irq(device_t dev, u_int irq);
512 
513 /* Can be used by drivers to manage the MSI-X table. */
514 int	pci_pending_msix(device_t dev, u_int index);
515 
516 int	pci_msi_device_blacklisted(device_t dev);
517 
518 void	pci_ht_map_msi(device_t dev, uint64_t addr);
519 
520 /* Returns PCI_INTR_TYPE_ */
521 int	pci_alloc_1intr(device_t dev, int msi_enable, int *rid, u_int *flags);
522 
523 #define PCI_INTR_TYPE_LEGACY	0
524 #define PCI_INTR_TYPE_MSI	1
525 #define PCI_INTR_TYPE_MSIX	2	/* not yet */
526 
527 #endif	/* _SYS_BUS_H_ */
528 
529 /*
530  * cdev switch for control device, initialised in generic PCI code
531  */
532 extern struct cdevsw pcicdev;
533 
534 /*
535  * List of all PCI devices, generation count for the list.
536  */
537 STAILQ_HEAD(devlist, pci_devinfo);
538 
539 extern struct devlist	pci_devq;
540 extern uint32_t	pci_generation;
541 
542 /* for compatibility to FreeBSD-2.2 and 3.x versions of PCI code */
543 
544 #if defined(_KERNEL) && !defined(KLD_MODULE)
545 #include "opt_compat_oldpci.h"
546 #endif
547 
548 #ifdef COMPAT_OLDPCI
549 /* all this is going some day */
550 
551 typedef pcicfgregs *pcici_t;
552 typedef unsigned pcidi_t;
553 typedef void pci_inthand_t(void *arg);
554 
555 #define pci_max_burst_len (3)
556 
557 /* just copied from old PCI code for now ... */
558 
559 struct pci_device {
560     char*    pd_name;
561     const char*  (*pd_probe ) (pcici_t tag, pcidi_t type);
562     void   (*pd_attach) (pcici_t tag, int     unit);
563     u_long  *pd_count;
564     int    (*pd_shutdown) (int, int);
565 };
566 
567 #ifdef __i386__
568 typedef u_short pci_port_t;
569 #else
570 typedef u_int pci_port_t;
571 #endif
572 
573 u_long pci_conf_read (pcici_t tag, u_long reg);
574 void pci_conf_write (pcici_t tag, u_long reg, u_long data);
575 int pci_map_port (pcici_t tag, u_long reg, pci_port_t* pa);
576 int pci_map_mem (pcici_t tag, u_long reg, vm_offset_t* va, vm_offset_t* pa);
577 int pci_map_int (pcici_t tag, pci_inthand_t *handler, void *arg);
578 int pci_map_int_right(pcici_t cfg, pci_inthand_t *handler, void *arg,
579 		      u_int flags);
580 int pci_unmap_int (pcici_t tag);
581 
582 void pci_cfgwrite (pcicfgregs *cfg, int reg, int data, int bytes);
583 
584 pcici_t pci_get_parent_from_tag(pcici_t tag);
585 int     pci_get_bus_from_tag(pcici_t tag);
586 
587 pcicfgregs *pci_devlist_get_parent(pcicfgregs *cfg);
588 
589 struct module;
590 int compat_pci_handler (struct module *, int, void *);
591 #define COMPAT_PCI_DRIVER(name, pcidata)				\
592 static moduledata_t name##_mod = {					\
593 	#name,								\
594 	compat_pci_handler,						\
595 	&pcidata							\
596 };									\
597 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_ANY)
598 
599 #endif /* COMPAT_OLDPCI */
600 
601 #endif /* _PCIVAR_H_ */
602