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pci_machdep.h revision 1.13 
      1 /*	$NetBSD: pci_machdep.h,v 1.13 2018/09/06 22:30:34 jmcneill Exp $	*/
      2 
      3 /*
      4  * Modified for arm32 by Mark Brinicombe
      5  *
      6  * from: sys/arch/alpha/pci/pci_machdep.h
      7  *
      8  * Copyright (c) 1996 Carnegie-Mellon University.
      9  * All rights reserved.
     10  *
     11  * Author: Chris G. Demetriou
     12  *
     13  * Permission to use, copy, modify and distribute this software and
     14  * its documentation is hereby granted, provided that both the copyright
     15  * notice and this permission notice appear in all copies of the
     16  * software, derivative works or modified versions, and any portions
     17  * thereof, and that both notices appear in supporting documentation.
     18  *
     19  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     20  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     21  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     22  *
     23  * Carnegie Mellon requests users of this software to return to
     24  *
     25  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     26  *  School of Computer Science
     27  *  Carnegie Mellon University
     28  *  Pittsburgh PA 15213-3890
     29  *
     30  * any improvements or extensions that they make and grant Carnegie the
     31  * rights to redistribute these changes.
     32  */
     33 
     34 #ifndef _ARM_PCI_MACHDEP_H_
     35 #define _ARM_PCI_MACHDEP_H_
     36 /*
     37  * Machine-specific definitions for PCI autoconfiguration.
     38  */
     39 
     40 #ifdef __aarch64__
     41 #define _PCI_HAVE_DMA64
     42 #endif
     43 
     44 #include <sys/errno.h>
     45 
     46 /*
     47  * Types provided to machine-independent PCI code
     48  */
     49 typedef struct	arm32_pci_chipset	*pci_chipset_tag_t;
     50 typedef u_long	pcitag_t;
     51 typedef u_long	pci_intr_handle_t;
     52 
     53 /*
     54  * Forward declarations.
     55  */
     56 struct pci_attach_args;
     57 
     58 /*
     59  * arm32-specific PCI structure and type definitions.
     60  * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE.
     61  */
     62 struct arm32_pci_chipset {
     63 	void		*pc_conf_v;
     64 	void		(*pc_attach_hook)(device_t, device_t,
     65 			    struct pcibus_attach_args *);
     66 	int		(*pc_bus_maxdevs)(void *, int);
     67 	pcitag_t	(*pc_make_tag)(void *, int, int, int);
     68 	void		(*pc_decompose_tag)(void *, pcitag_t, int *,
     69 			    int *, int *);
     70 	pcireg_t	(*pc_conf_read)(void *, pcitag_t, int);
     71 	void		(*pc_conf_write)(void *, pcitag_t, int, pcireg_t);
     72 
     73 	void		*pc_intr_v;
     74 	int		(*pc_intr_map)(const struct pci_attach_args *,
     75 			    pci_intr_handle_t *);
     76 	const char	*(*pc_intr_string)(void *, pci_intr_handle_t,
     77 			    char *, size_t);
     78 	const struct evcnt *(*pc_intr_evcnt)(void *, pci_intr_handle_t);
     79 	int		(*pc_intr_setattr)(void *, pci_intr_handle_t *,
     80 			    int, uint64_t);
     81 	void		*(*pc_intr_establish)(void *, pci_intr_handle_t,
     82 			    int, int (*)(void *), void *);
     83 	void		(*pc_intr_disestablish)(void *, void *);
     84 
     85 #ifdef __HAVE_PCI_CONF_HOOK
     86 	int		(*pc_conf_hook)(void *, int, int, int, pcireg_t);
     87 #endif
     88 	void		(*pc_conf_interrupt)(void *, int, int, int, int, int *);
     89 
     90 	uint32_t	pc_cfg_cmd;
     91 };
     92 
     93 /*
     94  * Functions provided to machine-independent PCI code.
     95  */
     96 #define	pci_attach_hook(p, s, pba)					\
     97     (*(pba)->pba_pc->pc_attach_hook)((p), (s), (pba))
     98 #define	pci_bus_maxdevs(c, b)						\
     99     (*(c)->pc_bus_maxdevs)((c)->pc_conf_v, (b))
    100 #define	pci_make_tag(c, b, d, f)					\
    101     (*(c)->pc_make_tag)((c)->pc_conf_v, (b), (d), (f))
    102 #define	pci_decompose_tag(c, t, bp, dp, fp)				\
    103     (*(c)->pc_decompose_tag)((c)->pc_conf_v, (t), (bp), (dp), (fp))
    104 #define	pci_conf_read(c, t, r)						\
    105     (*(c)->pc_conf_read)((c)->pc_conf_v, (t), (r))
    106 #define	pci_conf_write(c, t, r, v)					\
    107     (*(c)->pc_conf_write)((c)->pc_conf_v, (t), (r), (v))
    108 #define	pci_intr_map(pa, ihp)						\
    109     (*(pa)->pa_pc->pc_intr_map)((pa), (ihp))
    110 #define	pci_intr_string(c, ih, buf, len)				\
    111     (*(c)->pc_intr_string)((c)->pc_intr_v, (ih), (buf), (len))
    112 #define	pci_intr_evcnt(c, ih)						\
    113     (*(c)->pc_intr_evcnt)((c)->pc_intr_v, (ih))
    114 #define	pci_intr_establish(c, ih, l, h, a)				\
    115     (*(c)->pc_intr_establish)((c)->pc_intr_v, (ih), (l), (h), (a))
    116 #define	pci_intr_disestablish(c, iv)					\
    117     (*(c)->pc_intr_disestablish)((c)->pc_intr_v, (iv))
    118 #ifdef __HAVE_PCI_CONF_HOOK
    119 #define	pci_conf_hook(c, b, d, f, id)					\
    120     (*(c)->pc_conf_hook)((c)->pc_conf_v, (b), (d), (f), (id))
    121 #endif
    122 #define	pci_conf_interrupt(c, b, d, i, s, p)				\
    123     (*(c)->pc_conf_interrupt)((c)->pc_conf_v, (b), (d), (i), (s), (p))
    124 
    125 static inline int
    126 pci_intr_setattr(pci_chipset_tag_t pc, pci_intr_handle_t *ihp,
    127     int attr, uint64_t data)
    128 {
    129 	if (!pc->pc_intr_setattr)
    130 		return ENODEV;
    131 	return pc->pc_intr_setattr(pc, ihp, attr, data);
    132 }
    133 
    134 #endif	/* _ARM_PCI_MACHDEP_H_ */
    135