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cxgb4: fix incorrect cim_la output for T6

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[ Upstream commit a97051f4553551d13e586ab3cb6ae13093a44a81 ]

take care of UpDbgLaRdPtr[0-3] restriction for T6.

Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ganesh Goudar 2017-05-31 19:10:21 +05:30 committed by Greg Kroah-Hartman
parent 31462de6ba
commit 6b3c6821f0
1 changed files with 10 additions and 1 deletions
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11
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
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@ -8088,7 +8088,16 @@ int t4_cim_read_la(struct adapter *adap, u32 *la_buf, unsigned int *wrptr)
ret = t4_cim_read(adap, UP_UP_DBG_LA_DATA_A, 1, &la_buf[i]);
if (ret)
break;
idx = (idx + 1) & UPDBGLARDPTR_M;
/* Bits 0-3 of UpDbgLaRdPtr can be between 0000 to 1001 to
* identify the 32-bit portion of the full 312-bit data
*/
if (is_t6(adap->params.chip) && (idx & 0xf) >= 9)
idx = (idx & 0xff0) + 0x10;
else
idx++;
/* address can't exceed 0xfff */
idx &= UPDBGLARDPTR_M;
}
restart:
if (cfg & UPDBGLAEN_F) {