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igb: Loopback functionality supports for i350 devices

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This patch adds VMDq loopback pf support for i350 devices. The patch
is necessary since the register that enabled loopback was moved and
renamed from DTXSWC to TXSWC.

Signed-off-by: "Akeem G. Abodunrin" <akeem.g.abodunrin@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Akeem G. Abodunrin 2011-09-08 20:39:48 +00:00 committed by Jeff Kirsher
parent bed45a6ed5
commit ca2e3e7ec9
2 changed files with 24 additions and 6 deletions
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29
drivers/net/ethernet/intel/igb/e1000_82575.c
View file

@ -1580,14 +1580,31 @@ void igb_vmdq_set_anti_spoofing_pf(struct e1000_hw *hw, bool enable, int pf)
**/
void igb_vmdq_set_loopback_pf(struct e1000_hw *hw, bool enable)
{
u32 dtxswc = rd32(E1000_DTXSWC);
u32 dtxswc;
switch (hw->mac.type) {
case e1000_82576:
dtxswc = rd32(E1000_DTXSWC);
if (enable)
dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN;
else
dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN;
wr32(E1000_DTXSWC, dtxswc);
break;
case e1000_i350:
dtxswc = rd32(E1000_TXSWC);
if (enable)
dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN;
else
dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN;
wr32(E1000_TXSWC, dtxswc);
break;
default:
/* Currently no other hardware supports loopback */
break;
}
if (enable)
dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN;
else
dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN;
wr32(E1000_DTXSWC, dtxswc);
}
/**

1
drivers/net/ethernet/intel/igb/e1000_regs.h
View file

@ -318,6 +318,7 @@
#define E1000_RPLOLR 0x05AF0 /* Replication Offload - RW */
#define E1000_UTA 0x0A000 /* Unicast Table Array - RW */
#define E1000_IOVTCL 0x05BBC /* IOV Control Register */
#define E1000_TXSWC 0x05ACC /* Tx Switch Control */
/* These act per VF so an array friendly macro is used */
#define E1000_P2VMAILBOX(_n) (0x00C00 + (4 * (_n)))
#define E1000_VMBMEM(_n) (0x00800 + (64 * (_n)))