bnx2x: Don't notify about scratchpad parities

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>

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
index 7a4aaa3..b4bfdd2 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
@@ -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)

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index bf5f5df..9628595 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -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,