linux-kernel - [RFC PATCH 1/2] net: macb: Add RBQP to the macb queues

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Message-ID: <1511766238-1710-1-git-send-email-harinik@xilinx.com>
Date:   Mon, 27 Nov 2017 12:33:57 +0530
From:   Harini Katakam <harini.katakam@...inx.com>
To:     <nicolas.ferre@...el.com>, <davem@...emloft.net>,
        <harinikatakamlinux@...il.com>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <harinik@...inx.com>, <michals@...inx.com>,
        "Edgar E. Iglesias" <edgar.iglesias@...inx.com>,
        Michal Simek <michal.simek@...inx.com>
Subject: [RFC PATCH 1/2] net: macb: Add RBQP to the macb queues

From: "Edgar E. Iglesias" <edgar.iglesias@...inx.com>

Add RX queue pointer to macb queues to make it accessible for the
multiple queues available. Currently the first RX queue is used.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@...inx.com>
Signed-off-by: Harini Katakam <harinik@...inx.com>
Signed-off-by: Michal Simek <michal.simek@...inx.com>
---
 drivers/net/ethernet/cadence/macb.h      | 1 +
 drivers/net/ethernet/cadence/macb_main.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/cadence/macb.h b/drivers/net/ethernet/cadence/macb.h
index c93f3a2..acb6578 100644
--- a/drivers/net/ethernet/cadence/macb.h
+++ b/drivers/net/ethernet/cadence/macb.h
@@ -968,6 +968,7 @@ struct macb_queue {
 	unsigned int		IMR;
 	unsigned int		TBQP;
 	unsigned int		TBQPH;
+	unsigned int		RBQP;
 
 	unsigned int		tx_head, tx_tail;
 	struct macb_dma_desc	*tx_ring;
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 72a67f7..623ae9c 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -2875,6 +2875,7 @@ static int macb_init(struct platform_device *pdev)
 			if (bp->hw_dma_cap & HW_DMA_CAP_64B)
 				queue->TBQPH = GEM_TBQPH(hw_q - 1);
 #endif
+			queue->RBQP = GEM_RBQP(hw_q - 1);
 		} else {
 			/* queue0 uses legacy registers */
 			queue->ISR  = MACB_ISR;
@@ -2886,6 +2887,7 @@ static int macb_init(struct platform_device *pdev)
 			if (bp->hw_dma_cap & HW_DMA_CAP_64B)
 				queue->TBQPH = MACB_TBQPH;
 #endif
+			queue->RBQP = MACB_RBQP;
 		}
 
 		/* get irq: here we use the linux queue index, not the hardware
-- 
2.7.4