Annotation of embedaddon/pciutils/lib/fbsd-device.c, revision 1.1
1.1 ! misho 1: /*
! 2: * The PCI Library -- FreeBSD /dev/pci access
! 3: *
! 4: * Copyright (c) 1999 Jari Kirma <kirma@cs.hut.fi>
! 5: * Updated in 2003 by Samy Al Bahra <samy@kerneled.com>
! 6: *
! 7: * Can be freely distributed and used under the terms of the GNU GPL.
! 8: */
! 9:
! 10: #include <errno.h>
! 11: #include <fcntl.h>
! 12: #include <stdio.h>
! 13: #include <string.h>
! 14: #include <unistd.h>
! 15: #include <osreldate.h>
! 16: #include <stdint.h>
! 17:
! 18: #ifdef __FreeBSD_kernel_version
! 19: # ifndef __FreeBSD_version
! 20: # define __FreeBSD_version __FreeBSD_kernel_version
! 21: # endif
! 22: #endif
! 23:
! 24: #if __FreeBSD_version < 430000 && !defined(__DragonFly__)
! 25: # include <pci/pcivar.h>
! 26: # include <pci/pci_ioctl.h>
! 27: #else
! 28: # include <sys/pciio.h>
! 29: #endif
! 30:
! 31: #include "internal.h"
! 32:
! 33: static void
! 34: fbsd_config(struct pci_access *a)
! 35: {
! 36: pci_define_param(a, "fbsd.path", PCI_PATH_FBSD_DEVICE, "Path to the FreeBSD PCI device");
! 37: }
! 38:
! 39: static int
! 40: fbsd_detect(struct pci_access *a)
! 41: {
! 42: char *name = pci_get_param(a, "fbsd.path");
! 43:
! 44: if (access(name, R_OK))
! 45: {
! 46: a->warning("Cannot open %s", name);
! 47: return 0;
! 48: }
! 49: a->debug("...using %s", name);
! 50: return 1;
! 51: }
! 52:
! 53: static void
! 54: fbsd_init(struct pci_access *a)
! 55: {
! 56: char *name = pci_get_param(a, "fbsd.path");
! 57:
! 58: a->fd = open(name, O_RDWR, 0);
! 59: if (a->fd < 0)
! 60: a->error("fbsd_init: %s open failed", name);
! 61: }
! 62:
! 63: static void
! 64: fbsd_cleanup(struct pci_access *a)
! 65: {
! 66: close(a->fd);
! 67: }
! 68:
! 69: static int
! 70: fbsd_read(struct pci_dev *d, int pos, byte *buf, int len)
! 71: {
! 72: struct pci_io pi;
! 73:
! 74: if (!(len == 1 || len == 2 || len == 4))
! 75: return pci_generic_block_read(d, pos, buf, len);
! 76:
! 77: if (pos >= 256)
! 78: return 0;
! 79:
! 80: #if __FreeBSD_version >= 700053
! 81: pi.pi_sel.pc_domain = d->domain;
! 82: #endif
! 83: pi.pi_sel.pc_bus = d->bus;
! 84: pi.pi_sel.pc_dev = d->dev;
! 85: pi.pi_sel.pc_func = d->func;
! 86:
! 87: pi.pi_reg = pos;
! 88: pi.pi_width = len;
! 89:
! 90: if (ioctl(d->access->fd, PCIOCREAD, &pi) < 0)
! 91: {
! 92: if (errno == ENODEV)
! 93: return 0;
! 94: d->access->error("fbsd_read: ioctl(PCIOCREAD) failed: %s", strerror(errno));
! 95: }
! 96:
! 97: switch (len)
! 98: {
! 99: case 1:
! 100: buf[0] = (u8) pi.pi_data;
! 101: break;
! 102: case 2:
! 103: ((u16 *) buf)[0] = cpu_to_le16((u16) pi.pi_data);
! 104: break;
! 105: case 4:
! 106: ((u32 *) buf)[0] = cpu_to_le32((u32) pi.pi_data);
! 107: break;
! 108: }
! 109: return 1;
! 110: }
! 111:
! 112: static int
! 113: fbsd_write(struct pci_dev *d, int pos, byte *buf, int len)
! 114: {
! 115: struct pci_io pi;
! 116:
! 117: if (!(len == 1 || len == 2 || len == 4))
! 118: return pci_generic_block_write(d, pos, buf, len);
! 119:
! 120: if (pos >= 256)
! 121: return 0;
! 122:
! 123: #if __FreeBSD_version >= 700053
! 124: pi.pi_sel.pc_domain = d->domain;
! 125: #endif
! 126: pi.pi_sel.pc_bus = d->bus;
! 127: pi.pi_sel.pc_dev = d->dev;
! 128: pi.pi_sel.pc_func = d->func;
! 129:
! 130: pi.pi_reg = pos;
! 131: pi.pi_width = len;
! 132:
! 133: switch (len)
! 134: {
! 135: case 1:
! 136: pi.pi_data = buf[0];
! 137: break;
! 138: case 2:
! 139: pi.pi_data = le16_to_cpu(((u16 *) buf)[0]);
! 140: break;
! 141: case 4:
! 142: pi.pi_data = le32_to_cpu(((u32 *) buf)[0]);
! 143: break;
! 144: }
! 145:
! 146: if (ioctl(d->access->fd, PCIOCWRITE, &pi) < 0)
! 147: {
! 148: if (errno == ENODEV)
! 149: return 0;
! 150: d->access->error("fbsd_write: ioctl(PCIOCWRITE) failed: %s", strerror(errno));
! 151: }
! 152:
! 153: return 1;
! 154: }
! 155:
! 156: struct pci_methods pm_fbsd_device = {
! 157: "fbsd-device",
! 158: "FreeBSD /dev/pci device",
! 159: fbsd_config,
! 160: fbsd_detect,
! 161: fbsd_init,
! 162: fbsd_cleanup,
! 163: pci_generic_scan,
! 164: pci_generic_fill_info,
! 165: fbsd_read,
! 166: fbsd_write,
! 167: NULL, /* read_vpd */
! 168: NULL, /* dev_init */
! 169: NULL /* dev_cleanup */
! 170: };
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