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Commit 0029d64a authored by Yoshihiro Shimoda's avatar Yoshihiro Shimoda Committed by David S. Miller
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net: sh_eth: fix TX/RX descriptor not set physical memory 



Fix the probrem that TX/RX descirptor not set physical memory.

Signed-off-by: default avatarYoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: default avatarNobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e88aae7b

drivers/net/sh_eth.c

+12 −23
Original line number Diff line number Diff line
@@ -263,26 +263,20 @@ static void sh_eth_ring_format(struct net_device *ndev) 
#endif

		/* RX descriptor */

		rxdesc = &mdp->rx_ring[i];

		rxdesc->addr = (u32)skb->data & ~0x3UL;

		rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4));

		rxdesc->status = cpu_to_edmac(mdp, RD_RACT | RD_RFP);



		/* The size of the buffer is 16 byte boundary. */

		rxdesc->buffer_length = (mdp->rx_buf_sz + 16) & ~0x0F;

		rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16);

		/* Rx descriptor address set */

		if (i == 0) {

			ctrl_outl((u32)rxdesc, ioaddr + RDLAR);

			ctrl_outl(mdp->rx_desc_dma, ioaddr + RDLAR);

#if defined(CONFIG_CPU_SUBTYPE_SH7763)

			ctrl_outl((u32)rxdesc, ioaddr + RDFAR);

			ctrl_outl(mdp->rx_desc_dma, ioaddr + RDFAR);

#endif

		}

	}



	/* Rx descriptor address set */

#if defined(CONFIG_CPU_SUBTYPE_SH7763)

	ctrl_outl((u32)rxdesc, ioaddr + RDFXR);

	ctrl_outl(0x1, ioaddr + RDFFR);

#endif



	mdp->dirty_rx = (u32) (i - RX_RING_SIZE);



	/* Mark the last entry as wrapping the ring. */
@@ -298,19 +292,13 @@ static void sh_eth_ring_format(struct net_device *ndev) 
		txdesc->buffer_length = 0;

		if (i == 0) {

			/* Tx descriptor address set */

			ctrl_outl((u32)txdesc, ioaddr + TDLAR);

			ctrl_outl(mdp->tx_desc_dma, ioaddr + TDLAR);

#if defined(CONFIG_CPU_SUBTYPE_SH7763)

			ctrl_outl((u32)txdesc, ioaddr + TDFAR);

			ctrl_outl(mdp->tx_desc_dma, ioaddr + TDFAR);

#endif

		}

	}



	/* Tx descriptor address set */

#if defined(CONFIG_CPU_SUBTYPE_SH7763)

	ctrl_outl((u32)txdesc, ioaddr + TDFXR);

	ctrl_outl(0x1, ioaddr + TDFFR);

#endif



	txdesc->status |= cpu_to_edmac(mdp, TD_TDLE);

}
@@ -536,7 +524,8 @@ static int sh_eth_rx(struct net_device *ndev) 
			if (desc_status & RD_RFS10)

				mdp->stats.rx_over_errors++;

		} else {

			swaps((char *)(rxdesc->addr & ~0x3), pkt_len + 2);

			swaps(phys_to_virt(ALIGN(rxdesc->addr, 4)),

				pkt_len + 2);

			skb = mdp->rx_skbuff[entry];

			mdp->rx_skbuff[entry] = NULL;

			skb_put(skb, pkt_len);
@@ -554,7 +543,7 @@ static int sh_eth_rx(struct net_device *ndev) 
		entry = mdp->dirty_rx % RX_RING_SIZE;

		rxdesc = &mdp->rx_ring[entry];

		/* The size of the buffer is 16 byte boundary. */

		rxdesc->buffer_length = (mdp->rx_buf_sz + 16) & ~0x0F;

		rxdesc->buffer_length = ALIGN(mdp->rx_buf_sz, 16);



		if (mdp->rx_skbuff[entry] == NULL) {

			skb = dev_alloc_skb(mdp->rx_buf_sz);
@@ -573,7 +562,7 @@ static int sh_eth_rx(struct net_device *ndev) 
			skb_reserve(skb, RX_OFFSET);

#endif

			skb->ip_summed = CHECKSUM_NONE;

			rxdesc->addr = (u32)skb->data & ~0x3UL;

			rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4));

		}

		if (entry >= RX_RING_SIZE - 1)

			rxdesc->status |=
@@ -959,9 +948,9 @@ static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev) 
	entry = mdp->cur_tx % TX_RING_SIZE;

	mdp->tx_skbuff[entry] = skb;

	txdesc = &mdp->tx_ring[entry];

	txdesc->addr = (u32)(skb->data);

	txdesc->addr = virt_to_phys(skb->data);

	/* soft swap. */

	swaps((char *)(txdesc->addr & ~0x3), skb->len + 2);

	swaps(phys_to_virt(ALIGN(txdesc->addr, 4)), skb->len + 2);

	/* write back */

	__flush_purge_region(skb->data, skb->len);

	if (skb->len < ETHERSMALL)