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bnx2x: Don't notify about scratchpad parities

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The scratchpad is a shared block between all functions of a given device.
Due to HW limitations, we can't properly close its parity notifications
to all functions on legal flows.
E.g., it's possible that while taking a register dump from one function
a parity error would be triggered on other functions.

Today driver doesn't consider this parity as a 'real' parity unless its
being accompanied by additional indications [which would happen in a real
parity scenario]; But it does print notifications for such events in the
system logs.

This eliminates such prints - in case of real parities driver would have
additional indications; But if this is the only signal user will not even
see a parity being logged in the system.

Signed-off-by: Manish Chopra <Manish.Chopra@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Manish Chopra 2015-06-25 15:19:24 +03:00 committed by David S. Miller
parent 9d18d270d7
commit ad6afbe957
2 changed files with 21 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
View file

@ -2418,10 +2418,13 @@ void bnx2x_igu_clear_sb_gen(struct bnx2x *bp, u8 func, u8 idu_sb_id,
AEU_INPUTS_ATTN_BITS_IGU_PARITY_ERROR | \
AEU_INPUTS_ATTN_BITS_MISC_PARITY_ERROR)
#define HW_PRTY_ASSERT_SET_3 (AEU_INPUTS_ATTN_BITS_MCP_LATCHED_ROM_PARITY | \
AEU_INPUTS_ATTN_BITS_MCP_LATCHED_UMP_RX_PARITY | \
AEU_INPUTS_ATTN_BITS_MCP_LATCHED_UMP_TX_PARITY | \
AEU_INPUTS_ATTN_BITS_MCP_LATCHED_SCPAD_PARITY)
#define HW_PRTY_ASSERT_SET_3_WITHOUT_SCPAD \
(AEU_INPUTS_ATTN_BITS_MCP_LATCHED_ROM_PARITY | \
AEU_INPUTS_ATTN_BITS_MCP_LATCHED_UMP_RX_PARITY | \
AEU_INPUTS_ATTN_BITS_MCP_LATCHED_UMP_TX_PARITY)
#define HW_PRTY_ASSERT_SET_3 (HW_PRTY_ASSERT_SET_3_WITHOUT_SCPAD | \
AEU_INPUTS_ATTN_BITS_MCP_LATCHED_SCPAD_PARITY)
#define HW_PRTY_ASSERT_SET_4 (AEU_INPUTS_ATTN_BITS_PGLUE_PARITY_ERROR | \
AEU_INPUTS_ATTN_BITS_ATC_PARITY_ERROR)

20
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
View file

@ -4863,9 +4863,7 @@ static bool bnx2x_check_blocks_with_parity3(struct bnx2x *bp, u32 sig,
res = true;
break;
case AEU_INPUTS_ATTN_BITS_MCP_LATCHED_SCPAD_PARITY:
if (print)
_print_next_block((*par_num)++,
"MCP SCPAD");
(*par_num)++;
/* clear latched SCPAD PATIRY from MCP */
REG_WR(bp, MISC_REG_AEU_CLR_LATCH_SIGNAL,
1UL << 10);
@ -4927,6 +4925,7 @@ static bool bnx2x_parity_attn(struct bnx2x *bp, bool *global, bool print,
(sig[3] & HW_PRTY_ASSERT_SET_3) ||
(sig[4] & HW_PRTY_ASSERT_SET_4)) {
int par_num = 0;
DP(NETIF_MSG_HW, "Was parity error: HW block parity attention:\n"
"[0]:0x%08x [1]:0x%08x [2]:0x%08x [3]:0x%08x [4]:0x%08x\n",
sig[0] & HW_PRTY_ASSERT_SET_0,
@ -4934,9 +4933,18 @@ static bool bnx2x_parity_attn(struct bnx2x *bp, bool *global, bool print,
sig[2] & HW_PRTY_ASSERT_SET_2,
sig[3] & HW_PRTY_ASSERT_SET_3,
sig[4] & HW_PRTY_ASSERT_SET_4);
if (print)
netdev_err(bp->dev,
"Parity errors detected in blocks: ");
if (print) {
if (((sig[0] & HW_PRTY_ASSERT_SET_0) ||
(sig[1] & HW_PRTY_ASSERT_SET_1) ||
(sig[2] & HW_PRTY_ASSERT_SET_2) ||
(sig[4] & HW_PRTY_ASSERT_SET_4)) ||
(sig[3] & HW_PRTY_ASSERT_SET_3_WITHOUT_SCPAD)) {
netdev_err(bp->dev,
"Parity errors detected in blocks: ");
} else {
print = false;
}
}
res |= bnx2x_check_blocks_with_parity0(bp,
sig[0] & HW_PRTY_ASSERT_SET_0, &par_num, print);
res |= bnx2x_check_blocks_with_parity1(bp,