[PATCH 3.14 040/130] bnx2x: Dont notify about scratchpad parities
From: Greg Kroah-Hartman
Date: Tue Mar 01 2016 - 21:05:02 EST
3.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Manish Chopra <Manish.Chopra@xxxxxxxxxx>
commit ad6afbe9578d1fa26680faf78c846bd8c00d1d6e upstream.
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@xxxxxxxxxx>
Signed-off-by: Yuval Mintz <Yuval.Mintz@xxxxxxxxxx>
Signed-off-by: Ariel Elior <Ariel.Elior@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Patrick Schaaf <netdev@xxxxxx>
Tested-by: Patrick Schaaf <netdev@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/broadcom/bnx2x/bnx2x.h | 11 +++++++----
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 20 ++++++++++++++------
2 files changed, 21 insertions(+), 10 deletions(-)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
@@ -2401,10 +2401,13 @@ void bnx2x_igu_clear_sb_gen(struct bnx2x
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)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -4631,9 +4631,7 @@ static bool bnx2x_check_blocks_with_pari
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);
@@ -4695,6 +4693,7 @@ static bool bnx2x_parity_attn(struct bnx
(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,
@@ -4702,9 +4701,18 @@ static bool bnx2x_parity_attn(struct bnx
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,