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Commit d6cae238 authored by Vladislav Zolotarov's avatar Vladislav Zolotarov Committed by David S. Miller
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bnx2x: count statistic ramrods on EQ to prevent MC assert 



This patch includes:
 - Counting statistics ramrods as EQ ramrods the way they should be. This
   accounting is meant to prevent MC asserts in case of software bugs.
 - Fixes in debug facilities which were added while working on one of such
   bugs.

Signed-off-by: default avatarDmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: default avatarVladislav Zolotarov <vladz@broadcom.com>
Signed-off-by: default avatarEilon Greenstein <eilong@broadcom.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1cb0c788

drivers/net/bnx2x/bnx2x_main.c

+32 −31
Original line number Diff line number Diff line
@@ -1671,11 +1671,12 @@ void bnx2x_sp_event(struct bnx2x_fastpath *fp, union eth_rx_cqe *rr_cqe) 


	switch (command) {

	case (RAMROD_CMD_ID_ETH_CLIENT_UPDATE):

		DP(NETIF_MSG_IFUP, "got UPDATE ramrod. CID %d\n", cid);

		DP(BNX2X_MSG_SP, "got UPDATE ramrod. CID %d\n", cid);

		drv_cmd = BNX2X_Q_CMD_UPDATE;

		break;



	case (RAMROD_CMD_ID_ETH_CLIENT_SETUP):

		DP(NETIF_MSG_IFUP, "got MULTI[%d] setup ramrod\n", cid);

		DP(BNX2X_MSG_SP, "got MULTI[%d] setup ramrod\n", cid);

		drv_cmd = BNX2X_Q_CMD_SETUP;

		break;
@@ -1685,17 +1686,17 @@ void bnx2x_sp_event(struct bnx2x_fastpath *fp, union eth_rx_cqe *rr_cqe) 
		break;



	case (RAMROD_CMD_ID_ETH_HALT):

		DP(NETIF_MSG_IFDOWN, "got MULTI[%d] halt ramrod\n", cid);

		DP(BNX2X_MSG_SP, "got MULTI[%d] halt ramrod\n", cid);

		drv_cmd = BNX2X_Q_CMD_HALT;

		break;



	case (RAMROD_CMD_ID_ETH_TERMINATE):

		DP(NETIF_MSG_IFDOWN, "got MULTI[%d] teminate ramrod\n", cid);

		DP(BNX2X_MSG_SP, "got MULTI[%d] teminate ramrod\n", cid);

		drv_cmd = BNX2X_Q_CMD_TERMINATE;

		break;



	case (RAMROD_CMD_ID_ETH_EMPTY):

		DP(NETIF_MSG_IFDOWN, "got MULTI[%d] empty ramrod\n", cid);

		DP(BNX2X_MSG_SP, "got MULTI[%d] empty ramrod\n", cid);

		drv_cmd = BNX2X_Q_CMD_EMPTY;

		break;
@@ -1725,6 +1726,8 @@ void bnx2x_sp_event(struct bnx2x_fastpath *fp, union eth_rx_cqe *rr_cqe) 
	/* push the change in bp->spq_left and towards the memory */

	smp_mb__after_atomic_inc();



	DP(BNX2X_MSG_SP, "bp->cq_spq_left %x\n", atomic_read(&bp->cq_spq_left));



	return;

}
@@ -3089,8 +3092,6 @@ int bnx2x_sp_post(struct bnx2x *bp, int command, int cid, 
	spe->data.update_data_addr.hi = cpu_to_le32(data_hi);

	spe->data.update_data_addr.lo = cpu_to_le32(data_lo);



	/* stats ramrod has it's own slot on the spq */

	if (command != RAMROD_CMD_ID_COMMON_STAT_QUERY) {

	/*

	 * It's ok if the actual decrement is issued towards the memory

	 * somewhere between the spin_lock and spin_unlock. Thus no
@@ -3100,15 +3101,14 @@ int bnx2x_sp_post(struct bnx2x *bp, int command, int cid, 
		atomic_dec(&bp->eq_spq_left);

	else

		atomic_dec(&bp->cq_spq_left);

	}





	DP(BNX2X_MSG_SP/*NETIF_MSG_TIMER*/,

	   "SPQE[%x] (%x:%x)  command %d  hw_cid %x  data (%x:%x) "

	   "type(0x%x) left (ETH, COMMON) (%x,%x)\n",

	   "SPQE[%x] (%x:%x)  (cmd, common?) (%d,%d)  hw_cid %x  data (%x:%x) "

	   "type(0x%x) left (CQ, EQ) (%x,%x)\n",

	   bp->spq_prod_idx, (u32)U64_HI(bp->spq_mapping),

	   (u32)(U64_LO(bp->spq_mapping) +

	   (void *)bp->spq_prod_bd - (void *)bp->spq), command,

	   (void *)bp->spq_prod_bd - (void *)bp->spq), command, common,

	   HW_CID(bp, cid), data_hi, data_lo, type,

	   atomic_read(&bp->cq_spq_left), atomic_read(&bp->eq_spq_left));
@@ -3465,6 +3465,7 @@ static inline void bnx2x_attn_int_deasserted3(struct bnx2x *bp, u32 attn) 
		} else if (attn & BNX2X_MC_ASSERT_BITS) {



			BNX2X_ERR("MC assert!\n");

			bnx2x_mc_assert(bp);

			REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_10, 0);

			REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_9, 0);

			REG_WR(bp, MISC_REG_AEU_GENERAL_ATTN_8, 0);
@@ -4424,7 +4425,7 @@ static void bnx2x_eq_int(struct bnx2x *bp) 
	sw_cons = bp->eq_cons;

	sw_prod = bp->eq_prod;



	DP(BNX2X_MSG_SP, "EQ:  hw_cons %u  sw_cons %u bp->cq_spq_left %u\n",

	DP(BNX2X_MSG_SP, "EQ:  hw_cons %u  sw_cons %u bp->eq_spq_left %x\n",

			hw_cons, sw_cons, atomic_read(&bp->eq_spq_left));



	for (; sw_cons != hw_cons;
@@ -4443,7 +4444,7 @@ static void bnx2x_eq_int(struct bnx2x *bp) 
			DP(NETIF_MSG_TIMER, "got statistics comp event %d\n",

			   bp->stats_comp++);

			/* nothing to do with stats comp */

			continue;

			goto next_spqe;



		case EVENT_RING_OPCODE_CFC_DEL:

			/* handle according to cid range */
@@ -4451,7 +4452,7 @@ static void bnx2x_eq_int(struct bnx2x *bp) 
			 * we may want to verify here that the bp state is

			 * HALTING

			 */

			DP(NETIF_MSG_IFDOWN,

			DP(BNX2X_MSG_SP,

			   "got delete ramrod for MULTI[%d]\n", cid);

#ifdef BCM_CNIC

			if (!bnx2x_cnic_handle_cfc_del(bp, cid, elem))
@@ -4467,7 +4468,7 @@ static void bnx2x_eq_int(struct bnx2x *bp) 
			goto next_spqe;



		case EVENT_RING_OPCODE_STOP_TRAFFIC:

			DP(NETIF_MSG_IFUP, "got STOP TRAFFIC\n");

			DP(BNX2X_MSG_SP, "got STOP TRAFFIC\n");

			if (f_obj->complete_cmd(bp, f_obj,

						BNX2X_F_CMD_TX_STOP))

				break;
@@ -4475,21 +4476,21 @@ static void bnx2x_eq_int(struct bnx2x *bp) 
			goto next_spqe;



		case EVENT_RING_OPCODE_START_TRAFFIC:

			DP(NETIF_MSG_IFUP, "got START TRAFFIC\n");

			DP(BNX2X_MSG_SP, "got START TRAFFIC\n");

			if (f_obj->complete_cmd(bp, f_obj,

						BNX2X_F_CMD_TX_START))

				break;

			bnx2x_dcbx_set_params(bp, BNX2X_DCBX_STATE_TX_RELEASED);

			goto next_spqe;

		case EVENT_RING_OPCODE_FUNCTION_START:

			DP(NETIF_MSG_IFUP, "got FUNC_START ramrod\n");

			DP(BNX2X_MSG_SP, "got FUNC_START ramrod\n");

			if (f_obj->complete_cmd(bp, f_obj, BNX2X_F_CMD_START))

				break;



			goto next_spqe;



		case EVENT_RING_OPCODE_FUNCTION_STOP:

			DP(NETIF_MSG_IFDOWN, "got FUNC_STOP ramrod\n");

			DP(BNX2X_MSG_SP, "got FUNC_STOP ramrod\n");

			if (f_obj->complete_cmd(bp, f_obj, BNX2X_F_CMD_STOP))

				break;
@@ -4503,7 +4504,7 @@ static void bnx2x_eq_int(struct bnx2x *bp) 
		      BNX2X_STATE_OPENING_WAIT4_PORT):

			cid = elem->message.data.eth_event.echo &

				BNX2X_SWCID_MASK;

			DP(NETIF_MSG_IFUP, "got RSS_UPDATE ramrod. CID %d\n",

			DP(BNX2X_MSG_SP, "got RSS_UPDATE ramrod. CID %d\n",

			   cid);

			rss_raw->clear_pending(rss_raw);

			break;
@@ -4518,7 +4519,7 @@ static void bnx2x_eq_int(struct bnx2x *bp) 
		      BNX2X_STATE_DIAG):

		case (EVENT_RING_OPCODE_CLASSIFICATION_RULES |

		      BNX2X_STATE_CLOSING_WAIT4_HALT):

			DP(NETIF_MSG_IFUP, "got (un)set mac ramrod\n");

			DP(BNX2X_MSG_SP, "got (un)set mac ramrod\n");

			bnx2x_handle_classification_eqe(bp, elem);

			break;
@@ -4528,7 +4529,7 @@ static void bnx2x_eq_int(struct bnx2x *bp) 
		      BNX2X_STATE_DIAG):

		case (EVENT_RING_OPCODE_MULTICAST_RULES |

		      BNX2X_STATE_CLOSING_WAIT4_HALT):

			DP(NETIF_MSG_IFUP, "got mcast ramrod\n");

			DP(BNX2X_MSG_SP, "got mcast ramrod\n");

			bnx2x_handle_mcast_eqe(bp);

			break;
@@ -4538,7 +4539,7 @@ static void bnx2x_eq_int(struct bnx2x *bp) 
		      BNX2X_STATE_DIAG):

		case (EVENT_RING_OPCODE_FILTERS_RULES |

		      BNX2X_STATE_CLOSING_WAIT4_HALT):

			DP(NETIF_MSG_IFUP, "got rx_mode ramrod\n");

			DP(BNX2X_MSG_SP, "got rx_mode ramrod\n");

			bnx2x_handle_rx_mode_eqe(bp);

			break;

		default: