1/* $NetBSD: pci_machdep.h,v 1.18 2020/02/13 00:02:21 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@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#define __HAVE_PCI_GET_SEGMENT 45 46#include <sys/errno.h> 47 48/* 49 * Types provided to machine-independent PCI code 50 */ 51typedef struct arm32_pci_chipset *pci_chipset_tag_t; 52typedef u_long pcitag_t; 53typedef uint64_t pci_intr_handle_t; 54 55/* 56 * pci_intr_handle_t fields 57 */ 58#define ARM_PCI_INTR_MSI_VEC 0x000007ff00000000ULL 59#define ARM_PCI_INTR_MPSAFE 0x0000000080000000ULL 60#define ARM_PCI_INTR_MSIX 0x0000000040000000ULL 61#define ARM_PCI_INTR_MSI 0x0000000020000000ULL 62#define ARM_PCI_INTR_FRAME 0x0000000000ff0000ULL 63#define ARM_PCI_INTR_IRQ 0x000000000000ffffULL 64 65#ifdef __HAVE_PCI_MSI_MSIX 66/* 67 * PCI MSI/MSI-X support 68 */ 69typedef enum { 70 PCI_INTR_TYPE_INTX = 0, 71 PCI_INTR_TYPE_MSI, 72 PCI_INTR_TYPE_MSIX, 73 PCI_INTR_TYPE_SIZE, 74} pci_intr_type_t; 75#endif /* __HAVE_PCI_MSI_MSIX */ 76 77/* 78 * Forward declarations. 79 */ 80struct pci_attach_args; 81 82/* 83 * arm32-specific PCI structure and type definitions. 84 * NOT TO BE USED DIRECTLY BY MACHINE INDEPENDENT CODE. 85 */ 86struct arm32_pci_chipset { 87 void *pc_conf_v; 88 void (*pc_attach_hook)(device_t, device_t, 89 struct pcibus_attach_args *); 90 int (*pc_bus_maxdevs)(void *, int); 91 pcitag_t (*pc_make_tag)(void *, int, int, int); 92 void (*pc_decompose_tag)(void *, pcitag_t, int *, 93 int *, int *); 94 u_int (*pc_get_segment)(void *); 95 uint32_t (*pc_get_devid)(void *, uint32_t); 96 uint32_t (*pc_get_frameid)(void *, uint32_t); 97 pcireg_t (*pc_conf_read)(void *, pcitag_t, int); 98 void (*pc_conf_write)(void *, pcitag_t, int, pcireg_t); 99 100 void *pc_intr_v; 101 int (*pc_intr_map)(const struct pci_attach_args *, 102 pci_intr_handle_t *); 103 const char *(*pc_intr_string)(void *, pci_intr_handle_t, 104 char *, size_t); 105 const struct evcnt *(*pc_intr_evcnt)(void *, pci_intr_handle_t); 106 int (*pc_intr_setattr)(void *, pci_intr_handle_t *, 107 int, uint64_t); 108 void *(*pc_intr_establish)(void *, pci_intr_handle_t, 109 int, int (*)(void *), void *, const char *); 110 void (*pc_intr_disestablish)(void *, void *); 111 112#ifdef __HAVE_PCI_CONF_HOOK 113 int (*pc_conf_hook)(void *, int, int, int, pcireg_t); 114#endif 115 void (*pc_conf_interrupt)(void *, int, int, int, int, int *); 116 117#ifdef __HAVE_PCI_MSI_MSIX 118 void *pc_msi_v; 119 pci_intr_type_t (*pc_intr_type)(void *, pci_intr_handle_t); 120 int (*pc_intr_alloc)(const struct pci_attach_args *, 121 pci_intr_handle_t **, int *, pci_intr_type_t); 122 void (*pc_intr_release)(void *, pci_intr_handle_t *, int); 123 int (*pc_intx_alloc)(const struct pci_attach_args *, 124 pci_intr_handle_t **); 125 int (*pc_msi_alloc)(const struct pci_attach_args *, 126 pci_intr_handle_t **, int *); 127 int (*pc_msi_alloc_exact)(const struct pci_attach_args *, 128 pci_intr_handle_t **, int); 129 int (*pc_msix_alloc)(const struct pci_attach_args *, 130 pci_intr_handle_t **, int *); 131 int (*pc_msix_alloc_exact)(const struct pci_attach_args *, 132 pci_intr_handle_t **, int); 133 int (*pc_msix_alloc_map)(const struct pci_attach_args *, 134 pci_intr_handle_t **, u_int *, int); 135#endif 136 137 uint32_t pc_cfg_cmd; 138}; 139 140/* 141 * Functions provided to machine-independent PCI code. 142 */ 143#define pci_attach_hook(p, s, pba) \ 144 (*(pba)->pba_pc->pc_attach_hook)((p), (s), (pba)) 145#define pci_bus_maxdevs(c, b) \ 146 (*(c)->pc_bus_maxdevs)((c)->pc_conf_v, (b)) 147#define pci_make_tag(c, b, d, f) \ 148 (*(c)->pc_make_tag)((c)->pc_conf_v, (b), (d), (f)) 149#define pci_decompose_tag(c, t, bp, dp, fp) \ 150 (*(c)->pc_decompose_tag)((c)->pc_conf_v, (t), (bp), (dp), (fp)) 151#define pci_get_segment(c) \ 152 ((c)->pc_get_segment ? (*(c)->pc_get_segment)((c)->pc_conf_v) : 0) 153#define pci_get_devid(c, d) \ 154 ((c)->pc_get_devid ? (*(c)->pc_get_devid)((c)->pc_conf_v, (d)) : (d)) 155#define pci_get_frameid(c, d) \ 156 ((c)->pc_get_frameid ? (*(c)->pc_get_frameid)((c)->pc_conf_v, (d)) : 0) 157#define pci_conf_read(c, t, r) \ 158 (*(c)->pc_conf_read)((c)->pc_conf_v, (t), (r)) 159#define pci_conf_write(c, t, r, v) \ 160 (*(c)->pc_conf_write)((c)->pc_conf_v, (t), (r), (v)) 161#define pci_intr_map(pa, ihp) \ 162 (*(pa)->pa_pc->pc_intr_map)((pa), (ihp)) 163#define pci_intr_string(c, ih, buf, len) \ 164 (*(c)->pc_intr_string)((c)->pc_intr_v, (ih), (buf), (len)) 165#define pci_intr_evcnt(c, ih) \ 166 (*(c)->pc_intr_evcnt)((c)->pc_intr_v, (ih)) 167#define pci_intr_establish(c, ih, l, h, a) \ 168 (*(c)->pc_intr_establish)((c)->pc_intr_v, (ih), (l), (h), (a), NULL) 169#define pci_intr_disestablish(c, iv) \ 170 (*(c)->pc_intr_disestablish)((c)->pc_intr_v, (iv)) 171#ifdef __HAVE_PCI_CONF_HOOK 172#define pci_conf_hook(c, b, d, f, id) \ 173 (*(c)->pc_conf_hook)((c)->pc_conf_v, (b), (d), (f), (id)) 174#endif 175#define pci_conf_interrupt(c, b, d, i, s, p) \ 176 (*(c)->pc_conf_interrupt)((c)->pc_conf_v, (b), (d), (i), (s), (p)) 177 178static inline int 179pci_intr_setattr(pci_chipset_tag_t pc, pci_intr_handle_t *ihp, 180 int attr, uint64_t data) 181{ 182 if (!pc->pc_intr_setattr) 183 return ENODEV; 184 return pc->pc_intr_setattr(pc, ihp, attr, data); 185} 186 187static inline void * 188pci_intr_establish_xname(pci_chipset_tag_t pc, pci_intr_handle_t ih, 189 int level, int (*func)(void *), void *arg, const char *xname) 190{ 191 return pc->pc_intr_establish(pc->pc_intr_v, ih, level, func, arg, xname); 192} 193 194#ifdef __HAVE_PCI_MSI_MSIX 195pci_intr_type_t pci_intr_type(pci_chipset_tag_t, pci_intr_handle_t); 196int pci_intr_alloc(const struct pci_attach_args *, pci_intr_handle_t **, 197 int *, pci_intr_type_t); 198void pci_intr_release(pci_chipset_tag_t, pci_intr_handle_t *, int); 199int pci_intx_alloc(const struct pci_attach_args *, pci_intr_handle_t **); 200int pci_msi_alloc(const struct pci_attach_args *, pci_intr_handle_t **, 201 int *); 202int pci_msi_alloc_exact(const struct pci_attach_args *, 203 pci_intr_handle_t **, int); 204int pci_msix_alloc(const struct pci_attach_args *, pci_intr_handle_t **, 205 int *); 206int pci_msix_alloc_exact(const struct pci_attach_args *, 207 pci_intr_handle_t **, int); 208int pci_msix_alloc_map(const struct pci_attach_args *, pci_intr_handle_t **, 209 u_int *, int); 210#endif /* __HAVE_PCI_MSI_MSIX */ 211 212#endif /* _ARM_PCI_MACHDEP_H_ */ 213