blob: b15545f9f9d7ec21ceffba66d72f8a0babde91e0 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
#include <rtems.h>
#define _KERNEL
#include <rtems/rtems_bsdnet.h>
#include <rtems/rtems_bsdnet_internal.h>
#include <bsp/rtems_verscheck.h>
#include <sys/malloc.h>
#include <sys/errno.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <net/if.h>
#include <net/if_media.h>
#include <rtems/rtems_mii_ioctl.h>
#define PHY_MAX 32
#undef DEBUG
/* A helper to find the active PHY. We really should port
* the entire BSD miibus/phy support but that's a bigger
* project...
*/
int
rtems_mii_phy_probe(struct rtems_mdio_info *mdio, void *softc)
{
int phy;
uint32_t bmsr, bmcr;
for ( phy = 0; phy<PHY_MAX; phy++ ) {
if ( mdio->mdio_r(phy, softc, MII_BMSR, &bmsr) )
continue;
bmsr &= 0xffff;
if ( 0 == bmsr || 0xffff == bmsr )
continue; /* nothing here */
/* no media supported ? */
if ( 0 == ((BMSR_EXTSTAT | 0xfe00) & bmsr ) )
continue; /* probably nothing there */
if ( mdio->mdio_r(phy, softc, MII_BMCR, &bmcr) )
continue;
/* skip isolated or powered-down phys */
if ( (BMCR_PDOWN | BMCR_ISO) & bmcr )
continue;
#ifdef DEBUG
printk("PHY #%u seems active; link status is %s\n", phy, BMSR_LINK & bmsr ? "UP" : "DOWN");
#endif
/* seems we found one */
return phy;
}
return -1;
}
|