2 * The PCI Library -- FreeBSD /dev/pci access
4 * Copyright (c) 1999 Jari Kirma <kirma@cs.hut.fi>
5 * Updated in 2003 by Samy Al Bahra <samy@kerneled.com>
6 * Updated in 2017 by Imre Vadász <imrevdsz@gmail.com>
8 * Can be freely distributed and used under the terms of the GNU GPL.
17 #include <osreldate.h>
20 #ifdef __FreeBSD_kernel_version
21 # ifndef __FreeBSD_version
22 # define __FreeBSD_version __FreeBSD_kernel_version
26 #if __FreeBSD_version < 430000 && !defined(__DragonFly__)
27 # include <pci/pcivar.h>
28 # include <pci/pci_ioctl.h>
30 # include <sys/pciio.h>
36 fbsd_config(struct pci_access *a)
38 pci_define_param(a, "fbsd.path", PCI_PATH_FBSD_DEVICE, "Path to the FreeBSD PCI device");
42 fbsd_detect(struct pci_access *a)
44 char *name = pci_get_param(a, "fbsd.path");
46 if (access(name, R_OK))
48 a->warning("Cannot open %s", name);
51 a->debug("...using %s", name);
56 fbsd_init(struct pci_access *a)
58 char *name = pci_get_param(a, "fbsd.path");
64 * When opening /dev/pci as read-write fails, retry with readonly which
65 * will still allow us to gain some information via the PCIOCGETCONF and
66 * PCIOCGETBAR IOCTLs, even without generic read access to the PCI config
69 fd = open(name, O_RDWR, 0);
72 fd = open(name, O_RDONLY, 0);
74 a->error("fbsd_init: %s open failed", name);
77 a->debug("fbsd_init: Fallback to read-only opened %s", name);
86 fbsd_cleanup(struct pci_access *a)
101 fbsd_scan(struct pci_access *a)
103 struct pci_conf_io conf;
104 struct pci_conf *matches;
109 matches = calloc(32, sizeof(struct pci_conf));
112 a->error("calloc: %s", strerror(errno));
119 conf.pat_buf_len = 0;
120 conf.num_patterns = 0;
121 conf.patterns = NULL;
122 conf.match_buf_len = 32 * sizeof(struct pci_conf);
123 conf.num_matches = 32;
124 conf.matches = matches;
125 conf.offset = offset;
127 if (ioctl(a->fd_rw >= 0 ? a->fd_rw : a->fd, PCIOCGETCONF, &conf) < 0)
131 a->error("fbsd_scan: ioctl(PCIOCGETCONF) failed: %s",
134 /* PCI_GETCONF_LIST_CHANGED would require us to start over. */
135 if (conf.status == PCI_GETCONF_ERROR ||
136 conf.status == PCI_GETCONF_LIST_CHANGED)
138 a->error("fbsd_scan: ioctl(PCIOCGETCONF) failed");
141 for (i = 0; i < conf.num_matches; i++)
143 t = pci_alloc_dev(a);
144 t->bus = matches[i].pc_sel.pc_bus;
145 t->dev = matches[i].pc_sel.pc_dev;
146 t->func = matches[i].pc_sel.pc_func;
147 t->domain = matches[i].pc_sel.pc_domain;
148 t->domain_16 = matches[i].pc_sel.pc_domain;
149 t->vendor_id = matches[i].pc_vendor;
150 t->device_id = matches[i].pc_device;
151 t->known_fields = PCI_FILL_IDENT;
152 t->hdrtype = matches[i].pc_hdr;
155 offset += conf.num_matches;
157 while (conf.status == PCI_GETCONF_MORE_DEVS);
163 fbsd_fill_info(struct pci_dev *d, int flags)
165 struct pci_conf_io conf;
166 struct pci_bar_io bar;
167 struct pci_match_conf pattern;
168 struct pci_conf match;
171 if (d->access->fd_rw >= 0)
172 return pci_generic_fill_info(d, flags);
175 * Can only handle PCI_FILL_IDENT, PCI_FILL_CLASS, PCI_FILL_BASES and
176 * PCI_FILL_SIZES requests with the PCIOCGETCONF and PCIOCGETBAR IOCTLs.
179 conf.pat_buf_len = sizeof(struct pci_match_conf);
180 conf.num_patterns = 1;
181 conf.patterns = &pattern;
182 conf.match_buf_len = sizeof(struct pci_conf);
183 conf.num_matches = 1;
184 conf.matches = &match;
189 pattern.pc_sel.pc_domain = d->domain;
190 pattern.pc_sel.pc_bus = d->bus;
191 pattern.pc_sel.pc_dev = d->dev;
192 pattern.pc_sel.pc_func = d->func;
193 pattern.flags = PCI_GETCONF_MATCH_DOMAIN | PCI_GETCONF_MATCH_BUS |
194 PCI_GETCONF_MATCH_DEV | PCI_GETCONF_MATCH_FUNC;
196 if (ioctl(d->access->fd, PCIOCGETCONF, &conf) < 0)
200 d->access->error("fbsd_fill_info: ioctl(PCIOCGETCONF) failed: %s", strerror(errno));
203 if (flags & PCI_FILL_IDENT)
205 d->vendor_id = match.pc_vendor;
206 d->device_id = match.pc_device;
208 if (flags & PCI_FILL_CLASS)
210 d->device_class = (match.pc_class << 8) | match.pc_subclass;
212 if (flags & (PCI_FILL_BASES | PCI_FILL_SIZES))
214 d->rom_base_addr = 0;
216 for (i = 0; i < 6; i++)
218 bar.pbi_sel.pc_domain = d->domain;
219 bar.pbi_sel.pc_bus = d->bus;
220 bar.pbi_sel.pc_dev = d->dev;
221 bar.pbi_sel.pc_func = d->func;
222 bar.pbi_reg = 0x10 + 4*i;
226 if (ioctl(d->access->fd, PCIOCGETBAR, &bar) < 0)
236 d->access->error("fbsd_fill_info: ioctl(PCIOCGETBAR) failed: %s", strerror(errno));
240 d->base_addr[i] = bar.pbi_base;
241 d->size[i] = bar.pbi_length;
246 return flags & (PCI_FILL_IDENT | PCI_FILL_CLASS | PCI_FILL_BASES |
251 fbsd_read(struct pci_dev *d, int pos, byte *buf, int len)
255 if (d->access->fd_rw < 0)
257 d->access->warning("fbsd_read: missing permissions");
261 if (!(len == 1 || len == 2 || len == 4))
262 return pci_generic_block_read(d, pos, buf, len);
267 #if __FreeBSD_version >= 700053 || defined(__DragonFly__)
268 pi.pi_sel.pc_domain = d->domain;
270 pi.pi_sel.pc_bus = d->bus;
271 pi.pi_sel.pc_dev = d->dev;
272 pi.pi_sel.pc_func = d->func;
277 if (ioctl(d->access->fd_rw, PCIOCREAD, &pi) < 0)
281 d->access->error("fbsd_read: ioctl(PCIOCREAD) failed: %s", strerror(errno));
287 buf[0] = (u8) pi.pi_data;
290 ((u16 *) buf)[0] = cpu_to_le16((u16) pi.pi_data);
293 ((u32 *) buf)[0] = cpu_to_le32((u32) pi.pi_data);
300 fbsd_write(struct pci_dev *d, int pos, byte *buf, int len)
304 if (d->access->fd_rw < 0)
306 d->access->warning("fbsd_write: missing permissions");
310 if (!(len == 1 || len == 2 || len == 4))
311 return pci_generic_block_write(d, pos, buf, len);
316 #if __FreeBSD_version >= 700053 || defined(__DragonFly__)
317 pi.pi_sel.pc_domain = d->domain;
319 pi.pi_sel.pc_bus = d->bus;
320 pi.pi_sel.pc_dev = d->dev;
321 pi.pi_sel.pc_func = d->func;
332 pi.pi_data = le16_to_cpu(((u16 *) buf)[0]);
335 pi.pi_data = le32_to_cpu(((u32 *) buf)[0]);
339 if (ioctl(d->access->fd_rw, PCIOCWRITE, &pi) < 0)
343 d->access->error("fbsd_write: ioctl(PCIOCWRITE) failed: %s", strerror(errno));
349 struct pci_methods pm_fbsd_device = {
351 "FreeBSD /dev/pci device",
362 NULL /* dev_cleanup */