Skip to content

Commit

Permalink
ssb: Clean up extraction of MAC addresses from SPROM
Browse files Browse the repository at this point in the history 
Only rev 1 and 2 ssb SPROMs have fields named et0mac and et1mac;
however, all of the extraction routines extract pseudo data for these
fields from regions that are all 1's resulting in a hardware address
of FF:FF:FF:FF:FF:FF. This patch forces such a fill at the beginning of
the data extraction process, and only does the formal extraction if the
SPROM rev is 1 or 2.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
  • Loading branch information
@lwfinger @linvjw
lwfinger authored and linvjw committed Aug 29, 2008
1 parent f5fe1fd commit 31ce12f
Show file tree
Hide file tree
Showing 2 changed files with 14 additions and 24 deletions.
34 changes: 14 additions & 20 deletions drivers/ssb/pci.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -327,11 +327,9 @@ static void sprom_extract_r123(struct ssb_sprom *out, const u16 *in)
s8 gain;
u16 loc[3];

if (out->revision == 3) { /* rev 3 moved MAC */
if (out->revision == 3) /* rev 3 moved MAC */
loc[0] = SSB_SPROM3_IL0MAC;
loc[1] = SSB_SPROM3_ET0MAC;
loc[2] = SSB_SPROM3_ET1MAC;
} else {
else {
loc[0] = SSB_SPROM1_IL0MAC;
loc[1] = SSB_SPROM1_ET0MAC;
loc[2] = SSB_SPROM1_ET1MAC;
Expand All @@ -340,13 +338,15 @@ static void sprom_extract_r123(struct ssb_sprom *out, const u16 *in)
v = in[SPOFF(loc[0]) + i];
*(((__be16 *)out->il0mac) + i) = cpu_to_be16(v);
}
for (i = 0; i < 3; i++) {
v = in[SPOFF(loc[1]) + i];
*(((__be16 *)out->et0mac) + i) = cpu_to_be16(v);
}
for (i = 0; i < 3; i++) {
v = in[SPOFF(loc[2]) + i];
*(((__be16 *)out->et1mac) + i) = cpu_to_be16(v);
if (out->revision < 3) { /* only rev 1-2 have et0, et1 */
for (i = 0; i < 3; i++) {
v = in[SPOFF(loc[1]) + i];
*(((__be16 *)out->et0mac) + i) = cpu_to_be16(v);
}
for (i = 0; i < 3; i++) {
v = in[SPOFF(loc[2]) + i];
*(((__be16 *)out->et1mac) + i) = cpu_to_be16(v);
}
}
SPEX(et0phyaddr, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET0A, 0);
SPEX(et1phyaddr, SSB_SPROM1_ETHPHY, SSB_SPROM1_ETHPHY_ET1A,
Expand Down Expand Up @@ -409,19 +409,11 @@ static void sprom_extract_r45(struct ssb_sprom *out, const u16 *in)
il0mac_offset = SSB_SPROM4_IL0MAC;
else
il0mac_offset = SSB_SPROM5_IL0MAC;
/* extract the equivalent of the r1 variables */
/* extract the MAC address */
for (i = 0; i < 3; i++) {
v = in[SPOFF(il0mac_offset) + i];
*(((__be16 *)out->il0mac) + i) = cpu_to_be16(v);
}
for (i = 0; i < 3; i++) {
v = in[SPOFF(SSB_SPROM4_ET0MAC) + i];
*(((__be16 *)out->et0mac) + i) = cpu_to_be16(v);
}
for (i = 0; i < 3; i++) {
v = in[SPOFF(SSB_SPROM4_ET1MAC) + i];
*(((__be16 *)out->et1mac) + i) = cpu_to_be16(v);
}
SPEX(et0phyaddr, SSB_SPROM4_ETHPHY, SSB_SPROM4_ETHPHY_ET0A, 0);
SPEX(et1phyaddr, SSB_SPROM4_ETHPHY, SSB_SPROM4_ETHPHY_ET1A,
SSB_SPROM4_ETHPHY_ET1A_SHIFT);
Expand Down Expand Up @@ -482,6 +474,8 @@ static int sprom_extract(struct ssb_bus *bus, struct ssb_sprom *out,

out->revision = in[size - 1] & 0x00FF;
ssb_dprintk(KERN_DEBUG PFX "SPROM revision %d detected.\n", out->revision);
memset(out->et0mac, 0xFF, 6); /* preset et0 and et1 mac */
memset(out->et1mac, 0xFF, 6);
if ((bus->chip_id & 0xFF00) == 0x4400) {
/* Workaround: The BCM44XX chip has a stupid revision
* number stored in the SPROM.
Expand Down
4 changes: 0 additions & 4 deletions include/linux/ssb/ssb_regs.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -245,8 +245,6 @@

/* SPROM Revision 3 (inherits most data from rev 2) */
#define SSB_SPROM3_IL0MAC 0x104A /* 6 bytes MAC address for 802.11b/g */
#define SSB_SPROM3_ET0MAC 0x1050 /* 6 bytes MAC address for Ethernet ?? */
#define SSB_SPROM3_ET1MAC 0x1050 /* 6 bytes MAC address for 802.11a ?? */
#define SSB_SPROM3_OFDMAPO 0x102C /* A-PHY OFDM Mid Power Offset (4 bytes, BigEndian) */
#define SSB_SPROM3_OFDMALPO 0x1030 /* A-PHY OFDM Low Power Offset (4 bytes, BigEndian) */
#define SSB_SPROM3_OFDMAHPO 0x1034 /* A-PHY OFDM High Power Offset (4 bytes, BigEndian) */
Expand All @@ -267,8 +265,6 @@

/* SPROM Revision 4 */
#define SSB_SPROM4_IL0MAC 0x104C /* 6 byte MAC address for a/b/g/n */
#define SSB_SPROM4_ET0MAC 0x1018 /* 6 bytes MAC address for Ethernet ?? */
#define SSB_SPROM4_ET1MAC 0x1018 /* 6 bytes MAC address for 802.11a ?? */
#define SSB_SPROM4_ETHPHY 0x105A /* Ethernet PHY settings ?? */
#define SSB_SPROM4_ETHPHY_ET0A 0x001F /* MII Address for enet0 */
#define SSB_SPROM4_ETHPHY_ET1A 0x03E0 /* MII Address for enet1 */
Expand Down

0 comments on commit 31ce12f

Please sign in to comment.