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Commit 1399f910 authored by Gilad Avidov's avatar Gilad Avidov
Browse files

msm: emac: Add BQL support 



Change driver transmit to support Byte Queue Limit (BQL). Warning about
receive errors is removed.

Change-Id: Ic57b602819b0a994264abb78b31387482a4c9c58
Acked-by: default avatarJie Luo <jluo@qti.qualcomm.com>
Signed-off-by: default avatarGilad Avidov <gavidov@codeaurora.org>
parent 156aa1e4

drivers/net/ethernet/msm/emac/emac.h

+0 −2
Original line number Diff line number Diff line
@@ -284,8 +284,6 @@ struct emac_hw { 
		_vlan = ((((_tag) >> 8) & 0xFF) | (((_tag) & 0xFF) << 8));





#define EMAC_MAX_HANDLED_INTRS          5



#define EMAC_DEF_RX_BUF_SIZE            1536

#define EMAC_MAX_JUMBO_PKT_SIZE         (9*1024)

#define EMAC_MAX_TX_OFFLOAD_THRESH      (9*1024)

drivers/net/ethernet/msm/emac/emac_main.c

+9 −6
Original line number Diff line number Diff line
@@ -624,7 +624,6 @@ static void emac_handle_rx(struct emac_adapter *adpt, 


		if (srrd.genr.res || srrd.genr.lene) {

			dev_kfree_skb(rfbuf->skb);

			emac_warn(adpt, rx_err, "received packet has errors\n");

			continue;

		}
@@ -686,6 +685,7 @@ static void emac_handle_tx(struct emac_adapter *adpt, 
	struct emac_hw *hw = &adpt->hw;

	struct emac_buffer *tpbuf;

	u32 hw_consume_idx;

	u32 pkts_compl = 0, bytes_compl = 0;



	hw_consume_idx = emac_reg_field_r32(hw, EMAC, txque->consume_reg,

					    txque->consume_mask,
@@ -702,6 +702,8 @@ static void emac_handle_tx(struct emac_adapter *adpt, 
		}



		if (tpbuf->skb) {

			pkts_compl++;

			bytes_compl += tpbuf->skb->len;

			dev_kfree_skb_irq(tpbuf->skb);

			tpbuf->skb = NULL;

		}
@@ -710,10 +712,8 @@ static void emac_handle_tx(struct emac_adapter *adpt, 
			txque->tpd.consume_idx = 0;

	}



	if (netif_queue_stopped(adpt->netdev) &&

	    netif_carrier_ok(adpt->netdev) &&

	    (emac_get_num_free_tpdescs(txque) >= (txque->tpd.count / 8)))

		netif_wake_queue(adpt->netdev);

	if (pkts_compl || bytes_compl)

		netdev_completed_queue(adpt->netdev, pkts_compl, bytes_compl);

}



/* NAPI */
@@ -986,6 +986,8 @@ static int emac_start_xmit_frame(struct emac_adapter *adpt, 


	emac_tx_map(adpt, txque, skb, &stpd);



	netdev_sent_queue(adpt->netdev, skb->len);



	/* update produce idx */

	prod_idx = (txque->tpd.produce_idx << txque->produce_shft) &

			txque->produce_mask;
@@ -1025,7 +1027,7 @@ static irqreturn_t emac_interrupt(int irq, void *data) 
	struct emac_irq_info *irq_info = data;

	struct emac_adapter *adpt = irq_info->adpt;

	struct emac_hw *hw = &adpt->hw;

	int max_ints = EMAC_MAX_HANDLED_INTRS;

	int max_ints = 1;

	u32 isr, status;



	/* disable the interrupt */
@@ -1233,6 +1235,7 @@ static void emac_clean_all_tx_queues(struct emac_adapter *adpt) 


	for (i = 0; i < adpt->num_txques; i++)

		emac_clean_tx_queue(&adpt->tx_queue[i]);

	netdev_reset_queue(adpt->netdev);

}



/* Free all descriptors of given receive queue */