2 * The PCI Library -- OpenBSD /dev/pci access
4 * Adapted from fbsd-device.c by Matthieu Herrb <matthieu.herrb@laas.fr>, 2006
6 * Can be freely distributed and used under the terms of the GNU GPL.
13 #include <sys/endian.h>
14 #include <sys/types.h>
15 #include <sys/ioctl.h>
16 #include <sys/pciio.h>
20 obsd_config(struct pci_access *a)
22 a->method_params[PCI_ACCESS_OBSD_DEVICE] = PCI_PATH_OBSD_DEVICE;
26 obsd_detect(struct pci_access *a)
28 char *name = a->method_params[PCI_ACCESS_OBSD_DEVICE];
30 if (access(name, R_OK))
32 a->warning("Cannot open %s", name);
35 a->debug("...using %s", name);
40 obsd_init(struct pci_access *a)
42 char *name = a->method_params[PCI_ACCESS_OBSD_DEVICE];
44 a->fd = open(name, O_RDWR, 0);
47 a->error("obsd_init: %s open failed", name);
52 obsd_cleanup(struct pci_access *a)
58 obsd_read(struct pci_dev *d, int pos, byte *buf, int len)
67 if (!(len == 1 || len == 2 || len == 4))
69 return pci_generic_block_read(d, pos, buf, len);
75 pi.pi_sel.pc_bus = d->bus;
76 pi.pi_sel.pc_dev = d->dev;
77 pi.pi_sel.pc_func = d->func;
79 pi.pi_reg = pos - (pos % 4);
82 if (ioctl(d->access->fd, PCIOCREAD, &pi) < 0) {
84 pi.pi_data = 0xffffffff;
86 d->access->error("obsd_read: ioctl(PCIOCREAD) failed");
94 buf[0] = (u8) u.u8[pos % 4];
97 ((u16 *) buf)[0] = letoh16(u.u16[(pos % 4) / 2]);
100 ((u32 *) buf)[0] = (u32) letoh32(pi.pi_data);
107 obsd_write(struct pci_dev *d, int pos, byte *buf, int len)
111 if (!(len == 1 || len == 2 || len == 4))
113 return pci_generic_block_write(d, pos, buf, len);
119 pi.pi_sel.pc_bus = d->bus;
120 pi.pi_sel.pc_dev = d->dev;
121 pi.pi_sel.pc_func = d->func;
132 pi.pi_data = ((u16 *) buf)[0];
135 pi.pi_data = ((u32 *) buf)[0];
139 if (ioctl(d->access->fd, PCIOCWRITE, &pi) < 0)
141 d->access->error("obsd_write: ioctl(PCIOCWRITE) failed");
147 struct pci_methods pm_obsd_device = {
154 pci_generic_fill_info,
158 NULL /* dev_cleanup */