netxen_nic_init.c 35.6 KB
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/*
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 * Copyright (C) 2003 - 2009 NetXen, Inc.
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 * All rights reserved.
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 *
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 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA  02111-1307, USA.
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 *
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 * The full GNU General Public License is included in this distribution
 * in the file called LICENSE.
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 *
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 * Contact Information:
 *    info@netxen.com
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 * NetXen Inc,
 * 18922 Forge Drive
 * Cupertino, CA 95014-0701
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 *
 */

#include <linux/netdevice.h>
#include <linux/delay.h>
#include "netxen_nic.h"
#include "netxen_nic_hw.h"
#include "netxen_nic_phan_reg.h"

struct crb_addr_pair {
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	u32 addr;
	u32 data;
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};

#define NETXEN_MAX_CRB_XFORM 60
static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
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#define NETXEN_ADDR_ERROR (0xffffffff)
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#define crb_addr_transform(name) \
	crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
	NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20

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#define NETXEN_NIC_XDMA_RESET 0x8000ff

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static void
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netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
		struct nx_host_rds_ring *rds_ring);
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static void crb_addr_transform_setup(void)
{
	crb_addr_transform(XDMA);
	crb_addr_transform(TIMR);
	crb_addr_transform(SRE);
	crb_addr_transform(SQN3);
	crb_addr_transform(SQN2);
	crb_addr_transform(SQN1);
	crb_addr_transform(SQN0);
	crb_addr_transform(SQS3);
	crb_addr_transform(SQS2);
	crb_addr_transform(SQS1);
	crb_addr_transform(SQS0);
	crb_addr_transform(RPMX7);
	crb_addr_transform(RPMX6);
	crb_addr_transform(RPMX5);
	crb_addr_transform(RPMX4);
	crb_addr_transform(RPMX3);
	crb_addr_transform(RPMX2);
	crb_addr_transform(RPMX1);
	crb_addr_transform(RPMX0);
	crb_addr_transform(ROMUSB);
	crb_addr_transform(SN);
	crb_addr_transform(QMN);
	crb_addr_transform(QMS);
	crb_addr_transform(PGNI);
	crb_addr_transform(PGND);
	crb_addr_transform(PGN3);
	crb_addr_transform(PGN2);
	crb_addr_transform(PGN1);
	crb_addr_transform(PGN0);
	crb_addr_transform(PGSI);
	crb_addr_transform(PGSD);
	crb_addr_transform(PGS3);
	crb_addr_transform(PGS2);
	crb_addr_transform(PGS1);
	crb_addr_transform(PGS0);
	crb_addr_transform(PS);
	crb_addr_transform(PH);
	crb_addr_transform(NIU);
	crb_addr_transform(I2Q);
	crb_addr_transform(EG);
	crb_addr_transform(MN);
	crb_addr_transform(MS);
	crb_addr_transform(CAS2);
	crb_addr_transform(CAS1);
	crb_addr_transform(CAS0);
	crb_addr_transform(CAM);
	crb_addr_transform(C2C1);
	crb_addr_transform(C2C0);
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	crb_addr_transform(SMB);
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	crb_addr_transform(OCM0);
	crb_addr_transform(I2C0);
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}

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void netxen_release_rx_buffers(struct netxen_adapter *adapter)
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{
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	struct netxen_recv_context *recv_ctx;
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	struct nx_host_rds_ring *rds_ring;
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	struct netxen_rx_buffer *rx_buf;
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	int i, ring;

	recv_ctx = &adapter->recv_ctx;
	for (ring = 0; ring < adapter->max_rds_rings; ring++) {
		rds_ring = &recv_ctx->rds_rings[ring];
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		for (i = 0; i < rds_ring->num_desc; ++i) {
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			rx_buf = &(rds_ring->rx_buf_arr[i]);
			if (rx_buf->state == NETXEN_BUFFER_FREE)
				continue;
			pci_unmap_single(adapter->pdev,
					rx_buf->dma,
					rds_ring->dma_size,
					PCI_DMA_FROMDEVICE);
			if (rx_buf->skb != NULL)
				dev_kfree_skb_any(rx_buf->skb);
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		}
	}
}

void netxen_release_tx_buffers(struct netxen_adapter *adapter)
{
	struct netxen_cmd_buffer *cmd_buf;
	struct netxen_skb_frag *buffrag;
	int i, j;
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	struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
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	cmd_buf = tx_ring->cmd_buf_arr;
	for (i = 0; i < tx_ring->num_desc; i++) {
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		buffrag = cmd_buf->frag_array;
		if (buffrag->dma) {
			pci_unmap_single(adapter->pdev, buffrag->dma,
					 buffrag->length, PCI_DMA_TODEVICE);
			buffrag->dma = 0ULL;
		}
		for (j = 0; j < cmd_buf->frag_count; j++) {
			buffrag++;
			if (buffrag->dma) {
				pci_unmap_page(adapter->pdev, buffrag->dma,
					       buffrag->length,
					       PCI_DMA_TODEVICE);
				buffrag->dma = 0ULL;
			}
		}
		if (cmd_buf->skb) {
			dev_kfree_skb_any(cmd_buf->skb);
			cmd_buf->skb = NULL;
		}
		cmd_buf++;
	}
}

void netxen_free_sw_resources(struct netxen_adapter *adapter)
{
	struct netxen_recv_context *recv_ctx;
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	struct nx_host_rds_ring *rds_ring;
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	struct nx_host_tx_ring *tx_ring;
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	int ring;

	recv_ctx = &adapter->recv_ctx;
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	if (recv_ctx->rds_rings == NULL)
		goto skip_rds;

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	for (ring = 0; ring < adapter->max_rds_rings; ring++) {
		rds_ring = &recv_ctx->rds_rings[ring];
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		vfree(rds_ring->rx_buf_arr);
		rds_ring->rx_buf_arr = NULL;
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	}
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	kfree(recv_ctx->rds_rings);

skip_rds:
	if (adapter->tx_ring == NULL)
		return;
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	tx_ring = adapter->tx_ring;
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	vfree(tx_ring->cmd_buf_arr);
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}

int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
{
	struct netxen_recv_context *recv_ctx;
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	struct nx_host_rds_ring *rds_ring;
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	struct nx_host_sds_ring *sds_ring;
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	struct nx_host_tx_ring *tx_ring;
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	struct netxen_rx_buffer *rx_buf;
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	int ring, i, size;
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	struct netxen_cmd_buffer *cmd_buf_arr;
	struct net_device *netdev = adapter->netdev;
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	struct pci_dev *pdev = adapter->pdev;
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	size = sizeof(struct nx_host_tx_ring);
	tx_ring = kzalloc(size, GFP_KERNEL);
	if (tx_ring == NULL) {
		dev_err(&pdev->dev, "%s: failed to allocate tx ring struct\n",
		       netdev->name);
		return -ENOMEM;
	}
	adapter->tx_ring = tx_ring;

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	tx_ring->num_desc = adapter->num_txd;
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	cmd_buf_arr = vmalloc(TX_BUFF_RINGSIZE(tx_ring));
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	if (cmd_buf_arr == NULL) {
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		dev_err(&pdev->dev, "%s: failed to allocate cmd buffer ring\n",
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		       netdev->name);
		return -ENOMEM;
	}
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	memset(cmd_buf_arr, 0, TX_BUFF_RINGSIZE(tx_ring));
	tx_ring->cmd_buf_arr = cmd_buf_arr;
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	recv_ctx = &adapter->recv_ctx;
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	size = adapter->max_rds_rings * sizeof (struct nx_host_rds_ring);
	rds_ring = kzalloc(size, GFP_KERNEL);
	if (rds_ring == NULL) {
		dev_err(&pdev->dev, "%s: failed to allocate rds ring struct\n",
		       netdev->name);
		return -ENOMEM;
	}
	recv_ctx->rds_rings = rds_ring;

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	for (ring = 0; ring < adapter->max_rds_rings; ring++) {
		rds_ring = &recv_ctx->rds_rings[ring];
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		switch (ring) {
		case RCV_RING_NORMAL:
			rds_ring->num_desc = adapter->num_rxd;
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			if (adapter->ahw.cut_through) {
				rds_ring->dma_size =
					NX_CT_DEFAULT_RX_BUF_LEN;
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				rds_ring->skb_size =
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					NX_CT_DEFAULT_RX_BUF_LEN;
			} else {
				rds_ring->dma_size = RX_DMA_MAP_LEN;
				rds_ring->skb_size =
					MAX_RX_BUFFER_LENGTH;
			}
			break;
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		case RCV_RING_JUMBO:
			rds_ring->num_desc = adapter->num_jumbo_rxd;
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			if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
				rds_ring->dma_size =
					NX_P3_RX_JUMBO_BUF_MAX_LEN;
			else
				rds_ring->dma_size =
					NX_P2_RX_JUMBO_BUF_MAX_LEN;
			rds_ring->skb_size =
				rds_ring->dma_size + NET_IP_ALIGN;
			break;
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		case RCV_RING_LRO:
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			rds_ring->num_desc = adapter->num_lro_rxd;
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			rds_ring->dma_size = RX_LRO_DMA_MAP_LEN;
			rds_ring->skb_size = MAX_RX_LRO_BUFFER_LENGTH;
			break;

		}
		rds_ring->rx_buf_arr = (struct netxen_rx_buffer *)
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			vmalloc(RCV_BUFF_RINGSIZE(rds_ring));
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		if (rds_ring->rx_buf_arr == NULL) {
			printk(KERN_ERR "%s: Failed to allocate "
				"rx buffer ring %d\n",
				netdev->name, ring);
			/* free whatever was already allocated */
			goto err_out;
		}
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		memset(rds_ring->rx_buf_arr, 0, RCV_BUFF_RINGSIZE(rds_ring));
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		INIT_LIST_HEAD(&rds_ring->free_list);
		/*
		 * Now go through all of them, set reference handles
		 * and put them in the queues.
		 */
		rx_buf = rds_ring->rx_buf_arr;
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		for (i = 0; i < rds_ring->num_desc; i++) {
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			list_add_tail(&rx_buf->list,
					&rds_ring->free_list);
			rx_buf->ref_handle = i;
			rx_buf->state = NETXEN_BUFFER_FREE;
			rx_buf++;
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		}
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		spin_lock_init(&rds_ring->lock);
	}

	for (ring = 0; ring < adapter->max_sds_rings; ring++) {
		sds_ring = &recv_ctx->sds_rings[ring];
		sds_ring->irq = adapter->msix_entries[ring].vector;
		sds_ring->adapter = adapter;
		sds_ring->num_desc = adapter->num_rxd;

		for (i = 0; i < NUM_RCV_DESC_RINGS; i++)
			INIT_LIST_HEAD(&sds_ring->free_list[i]);
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	}
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	return 0;

err_out:
	netxen_free_sw_resources(adapter);
	return -ENOMEM;
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}

void netxen_initialize_adapter_ops(struct netxen_adapter *adapter)
{
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	adapter->macaddr_set = netxen_p2_nic_set_mac_addr;
	adapter->set_multi = netxen_p2_nic_set_multi;

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	switch (adapter->ahw.port_type) {
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	case NETXEN_NIC_GBE:
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		adapter->enable_phy_interrupts =
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		    netxen_niu_gbe_enable_phy_interrupts;
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		adapter->disable_phy_interrupts =
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		    netxen_niu_gbe_disable_phy_interrupts;
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		adapter->set_mtu = netxen_nic_set_mtu_gb;
		adapter->set_promisc = netxen_niu_set_promiscuous_mode;
		adapter->phy_read = netxen_niu_gbe_phy_read;
		adapter->phy_write = netxen_niu_gbe_phy_write;
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		adapter->init_port = netxen_niu_gbe_init_port;
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		adapter->stop_port = netxen_niu_disable_gbe_port;
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		break;

	case NETXEN_NIC_XGBE:
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		adapter->enable_phy_interrupts =
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		    netxen_niu_xgbe_enable_phy_interrupts;
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		adapter->disable_phy_interrupts =
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		    netxen_niu_xgbe_disable_phy_interrupts;
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		adapter->set_mtu = netxen_nic_set_mtu_xgb;
		adapter->init_port = netxen_niu_xg_init_port;
		adapter->set_promisc = netxen_niu_xg_set_promiscuous_mode;
		adapter->stop_port = netxen_niu_disable_xg_port;
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		break;

	default:
		break;
	}
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	if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
		adapter->set_mtu = nx_fw_cmd_set_mtu;
		adapter->set_promisc = netxen_p3_nic_set_promisc;
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		adapter->macaddr_set = netxen_p3_nic_set_mac_addr;
		adapter->set_multi = netxen_p3_nic_set_multi;
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	}
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}

/*
 * netxen_decode_crb_addr(0 - utility to translate from internal Phantom CRB
 * address to external PCI CRB address.
 */
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static u32 netxen_decode_crb_addr(u32 addr)
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{
	int i;
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	u32 base_addr, offset, pci_base;
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	crb_addr_transform_setup();

	pci_base = NETXEN_ADDR_ERROR;
	base_addr = addr & 0xfff00000;
	offset = addr & 0x000fffff;

	for (i = 0; i < NETXEN_MAX_CRB_XFORM; i++) {
		if (crb_addr_xform[i] == base_addr) {
			pci_base = i << 20;
			break;
		}
	}
	if (pci_base == NETXEN_ADDR_ERROR)
		return pci_base;
	else
		return (pci_base + offset);
}

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static long rom_max_timeout = 100;
static long rom_lock_timeout = 10000;
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static int rom_lock(struct netxen_adapter *adapter)
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{
	int iter;
	u32 done = 0;
	int timeout = 0;

	while (!done) {
		/* acquire semaphore2 from PCI HW block */
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		done = NXRD32(adapter, NETXEN_PCIE_REG(PCIE_SEM2_LOCK));
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		if (done == 1)
			break;
		if (timeout >= rom_lock_timeout)
			return -EIO;

		timeout++;
		/*
		 * Yield CPU
		 */
		if (!in_atomic())
			schedule();
		else {
			for (iter = 0; iter < 20; iter++)
				cpu_relax();	/*This a nop instr on i386 */
		}
	}
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	NXWR32(adapter, NETXEN_ROM_LOCK_ID, ROM_LOCK_DRIVER);
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	return 0;
}

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static int netxen_wait_rom_done(struct netxen_adapter *adapter)
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{
	long timeout = 0;
	long done = 0;

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	cond_resched();

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	while (done == 0) {
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		done = NXRD32(adapter, NETXEN_ROMUSB_GLB_STATUS);
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		done &= 2;
		timeout++;
		if (timeout >= rom_max_timeout) {
			printk("Timeout reached  waiting for rom done");
			return -EIO;
		}
	}
	return 0;
}

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static void netxen_rom_unlock(struct netxen_adapter *adapter)
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{
	/* release semaphore2 */
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	NXRD32(adapter, NETXEN_PCIE_REG(PCIE_SEM2_UNLOCK));
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}

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static int do_rom_fast_read(struct netxen_adapter *adapter,
			    int addr, int *valp)
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{
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	NXWR32(adapter, NETXEN_ROMUSB_ROM_ADDRESS, addr);
	NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
	NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 3);
	NXWR32(adapter, NETXEN_ROMUSB_ROM_INSTR_OPCODE, 0xb);
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	if (netxen_wait_rom_done(adapter)) {
		printk("Error waiting for rom done\n");
		return -EIO;
	}
	/* reset abyte_cnt and dummy_byte_cnt */
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	NXWR32(adapter, NETXEN_ROMUSB_ROM_ABYTE_CNT, 0);
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	udelay(10);
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	NXWR32(adapter, NETXEN_ROMUSB_ROM_DUMMY_BYTE_CNT, 0);
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	*valp = NXRD32(adapter, NETXEN_ROMUSB_ROM_RDATA);
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	return 0;
}

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static int do_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
				  u8 *bytes, size_t size)
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{
	int addridx;
	int ret = 0;

	for (addridx = addr; addridx < (addr + size); addridx += 4) {
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		int v;
		ret = do_rom_fast_read(adapter, addridx, &v);
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		if (ret != 0)
			break;
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		*(__le32 *)bytes = cpu_to_le32(v);
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		bytes += 4;
	}

	return ret;
}

int
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netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
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				u8 *bytes, size_t size)
{
	int ret;

	ret = rom_lock(adapter);
	if (ret < 0)
		return ret;

	ret = do_rom_fast_read_words(adapter, addr, bytes, size);

	netxen_rom_unlock(adapter);
	return ret;
}

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int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp)
{
	int ret;

	if (rom_lock(adapter) != 0)
		return -EIO;

	ret = do_rom_fast_read(adapter, addr, valp);
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	netxen_rom_unlock(adapter);
	return ret;
}

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#define NETXEN_BOARDTYPE		0x4008
#define NETXEN_BOARDNUM 		0x400c
#define NETXEN_CHIPNUM			0x4010

int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose)
{
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	int addr, val;
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	int i, n, init_delay = 0;
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	struct crb_addr_pair *buf;
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	unsigned offset;
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	u32 off;
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	/* resetall */
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	rom_lock(adapter);
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	NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0xffffffff);
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	netxen_rom_unlock(adapter);
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	if (verbose) {
		if (netxen_rom_fast_read(adapter, NETXEN_BOARDTYPE, &val) == 0)
			printk("P2 ROM board type: 0x%08x\n", val);
		else
			printk("Could not read board type\n");
		if (netxen_rom_fast_read(adapter, NETXEN_BOARDNUM, &val) == 0)
			printk("P2 ROM board  num: 0x%08x\n", val);
		else
			printk("Could not read board number\n");
		if (netxen_rom_fast_read(adapter, NETXEN_CHIPNUM, &val) == 0)
			printk("P2 ROM chip   num: 0x%08x\n", val);
		else
			printk("Could not read chip number\n");
	}

542 543
	if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
		if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
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			(n != 0xcafecafe) ||
545 546 547
			netxen_rom_fast_read(adapter, 4, &n) != 0) {
			printk(KERN_ERR "%s: ERROR Reading crb_init area: "
					"n: %08x\n", netxen_nic_driver_name, n);
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			return -EIO;
		}
550 551 552 553 554 555 556 557
		offset = n & 0xffffU;
		n = (n >> 16) & 0xffffU;
	} else {
		if (netxen_rom_fast_read(adapter, 0, &n) != 0 ||
			!(n & 0x80000000)) {
			printk(KERN_ERR "%s: ERROR Reading crb_init area: "
					"n: %08x\n", netxen_nic_driver_name, n);
			return -EIO;
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		}
559 560 561 562 563 564 565 566 567 568 569 570 571
		offset = 1;
		n &= ~0x80000000;
	}

	if (n < 1024) {
		if (verbose)
			printk(KERN_DEBUG "%s: %d CRB init values found"
			       " in ROM.\n", netxen_nic_driver_name, n);
	} else {
		printk(KERN_ERR "%s:n=0x%x Error! NetXen card flash not"
		       " initialized.\n", __func__, n);
		return -EIO;
	}
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573 574 575 576 577 578 579 580
	buf = kcalloc(n, sizeof(struct crb_addr_pair), GFP_KERNEL);
	if (buf == NULL) {
		printk("%s: netxen_pinit_from_rom: Unable to calloc memory.\n",
				netxen_nic_driver_name);
		return -ENOMEM;
	}
	for (i = 0; i < n; i++) {
		if (netxen_rom_fast_read(adapter, 8*i + 4*offset, &val) != 0 ||
581 582
		netxen_rom_fast_read(adapter, 8*i + 4*offset + 4, &addr) != 0) {
			kfree(buf);
583
			return -EIO;
584
		}
585 586 587 588 589 590 591 592 593 594 595 596 597 598

		buf[i].addr = addr;
		buf[i].data = val;

		if (verbose)
			printk(KERN_DEBUG "%s: PCI:     0x%08x == 0x%08x\n",
				netxen_nic_driver_name,
				(u32)netxen_decode_crb_addr(addr), val);
	}
	for (i = 0; i < n; i++) {

		off = netxen_decode_crb_addr(buf[i].addr);
		if (off == NETXEN_ADDR_ERROR) {
			printk(KERN_ERR"CRB init value out of range %x\n",
599
					buf[i].addr);
600 601 602 603 604 605 606 607 608 609
			continue;
		}
		off += NETXEN_PCI_CRBSPACE;
		/* skipping cold reboot MAGIC */
		if (off == NETXEN_CAM_RAM(0x1fc))
			continue;

		if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
			/* do not reset PCI */
			if (off == (ROMUSB_GLB + 0xbc))
610
				continue;
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			if (off == (ROMUSB_GLB + 0xa8))
				continue;
			if (off == (ROMUSB_GLB + 0xc8)) /* core clock */
				continue;
			if (off == (ROMUSB_GLB + 0x24)) /* MN clock */
				continue;
			if (off == (ROMUSB_GLB + 0x1c)) /* MS clock */
				continue;
619 620 621 622
			if (off == (NETXEN_CRB_PEG_NET_1 + 0x18))
				buf[i].data = 0x1020;
			/* skip the function enable register */
			if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION))
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				continue;
624 625 626 627 628
			if (off == NETXEN_PCIE_REG(PCIE_SETUP_FUNCTION2))
				continue;
			if ((off & 0x0ff00000) == NETXEN_CRB_SMB)
				continue;
		}
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630 631 632 633 634 635
		if (off == NETXEN_ADDR_ERROR) {
			printk(KERN_ERR "%s: Err: Unknown addr: 0x%08x\n",
					netxen_nic_driver_name, buf[i].addr);
			continue;
		}

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		init_delay = 1;
637 638 639
		/* After writing this register, HW needs time for CRB */
		/* to quiet down (else crb_window returns 0xffffffff) */
		if (off == NETXEN_ROMUSB_GLB_SW_RESET) {
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			init_delay = 1000;
641
			if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
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				/* hold xdma in reset also */
643
				buf[i].data = NETXEN_NIC_XDMA_RESET;
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				buf[i].data = 0x8000ff;
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			}
646
		}
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648
		NXWR32(adapter, off, buf[i].data);
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		msleep(init_delay);
651 652
	}
	kfree(buf);
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654
	/* disable_peg_cache_all */
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656 657
	/* unreset_net_cache */
	if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
658 659
		val = NXRD32(adapter, NETXEN_ROMUSB_GLB_SW_RESET);
		NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, (val & 0xffffff0f));
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	}
661 662

	/* p2dn replyCount */
663
	NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0xec, 0x1e);
664
	/* disable_peg_cache 0 */
665
	NXWR32(adapter, NETXEN_CRB_PEG_NET_D + 0x4c, 8);
666
	/* disable_peg_cache 1 */
667
	NXWR32(adapter, NETXEN_CRB_PEG_NET_I + 0x4c, 8);
668 669 670 671

	/* peg_clr_all */

	/* peg_clr 0 */
672 673
	NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0x8, 0);
	NXWR32(adapter, NETXEN_CRB_PEG_NET_0 + 0xc, 0);
674
	/* peg_clr 1 */
675 676
	NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0x8, 0);
	NXWR32(adapter, NETXEN_CRB_PEG_NET_1 + 0xc, 0);
677
	/* peg_clr 2 */
678 679
	NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0x8, 0);
	NXWR32(adapter, NETXEN_CRB_PEG_NET_2 + 0xc, 0);
680
	/* peg_clr 3 */
681 682
	NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0x8, 0);
	NXWR32(adapter, NETXEN_CRB_PEG_NET_3 + 0xc, 0);
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	return 0;
}

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int
netxen_load_firmware(struct netxen_adapter *adapter)
{
	u64 *ptr64;
	u32 i, flashaddr, size;
	const struct firmware *fw = adapter->fw;

	if (NX_IS_REVISION_P2(adapter->ahw.revision_id))
		NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 1);

	if (fw) {
		__le64 data;

		size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 8;

		ptr64 = (u64 *)&fw->data[NETXEN_BOOTLD_START];
		flashaddr = NETXEN_BOOTLD_START;

		for (i = 0; i < size; i++) {
			data = cpu_to_le64(ptr64[i]);
			adapter->pci_mem_write(adapter, flashaddr, &data, 8);
			flashaddr += 8;
		}

		size = *(u32 *)&fw->data[NX_FW_SIZE_OFFSET];
		size = (__force u32)cpu_to_le32(size) / 8;

		ptr64 = (u64 *)&fw->data[NETXEN_IMAGE_START];
		flashaddr = NETXEN_IMAGE_START;

		for (i = 0; i < size; i++) {
			data = cpu_to_le64(ptr64[i]);

			if (adapter->pci_mem_write(adapter,
						flashaddr, &data, 8))
				return -EIO;

			flashaddr += 8;
		}
	} else {
		u32 data;

		size = (NETXEN_IMAGE_START - NETXEN_BOOTLD_START) / 4;
		flashaddr = NETXEN_BOOTLD_START;

		for (i = 0; i < size; i++) {
			if (netxen_rom_fast_read(adapter,
					flashaddr, (int *)&data) != 0)
				return -EIO;

			if (adapter->pci_mem_write(adapter,
						flashaddr, &data, 4))
				return -EIO;

			flashaddr += 4;
		}
	}
	msleep(1);

	if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
		NXWR32(adapter, NETXEN_ROMUSB_GLB_SW_RESET, 0x80001d);
	else {
		NXWR32(adapter, NETXEN_ROMUSB_GLB_CHIP_CLK_CTRL, 0x3fff);
		NXWR32(adapter, NETXEN_ROMUSB_GLB_CAS_RST, 0);
	}

	return 0;
}

static int
netxen_validate_firmware(struct netxen_adapter *adapter, const char *fwname)
{
	__le32 val;
	u32 major, minor, build, ver, min_ver, bios;
	struct pci_dev *pdev = adapter->pdev;
	const struct firmware *fw = adapter->fw;

	if (fw->size < NX_FW_MIN_SIZE)
		return -EINVAL;

	val = cpu_to_le32(*(u32 *)&fw->data[NX_FW_MAGIC_OFFSET]);
	if ((__force u32)val != NETXEN_BDINFO_MAGIC)
		return -EINVAL;

	val = cpu_to_le32(*(u32 *)&fw->data[NX_FW_VERSION_OFFSET]);
	major = (__force u32)val & 0xff;
	minor = ((__force u32)val >> 8) & 0xff;
	build = (__force u32)val >> 16;

	if (NX_IS_REVISION_P3(adapter->ahw.revision_id))
		min_ver = NETXEN_VERSION_CODE(4, 0, 216);
	else
		min_ver = NETXEN_VERSION_CODE(3, 4, 216);

	ver = NETXEN_VERSION_CODE(major, minor, build);

	if ((major > _NETXEN_NIC_LINUX_MAJOR) || (ver < min_ver)) {
		dev_err(&pdev->dev,
				"%s: firmware version %d.%d.%d unsupported\n",
				fwname, major, minor, build);
		return -EINVAL;
	}

	val = cpu_to_le32(*(u32 *)&fw->data[NX_BIOS_VERSION_OFFSET]);
	netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios);
	if ((__force u32)val != bios) {
		dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
				fwname);
		return -EINVAL;
	}

	/* check if flashed firmware is newer */
	if (netxen_rom_fast_read(adapter,
			NX_FW_VERSION_OFFSET, (int *)&val))
		return -EIO;
	major = (__force u32)val & 0xff;
	minor = ((__force u32)val >> 8) & 0xff;
	build = (__force u32)val >> 16;
	if (NETXEN_VERSION_CODE(major, minor, build) > ver)
		return -EINVAL;

	NXWR32(adapter, NETXEN_CAM_RAM(0x1fc), NETXEN_BDINFO_MAGIC);
	return 0;
}

static char *fw_name[] = { "nxromimg.bin", "nx3fwct.bin", "nx3fwmn.bin" };

void netxen_request_firmware(struct netxen_adapter *adapter)
{
	u32 capability, flashed_ver;
	int fw_type;
	struct pci_dev *pdev = adapter->pdev;
	int rc = 0;

	if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
		fw_type = NX_P2_MN_ROMIMAGE;
		goto request_fw;
	} else {
		fw_type = NX_P3_CT_ROMIMAGE;
		goto request_fw;
	}

request_mn:
	capability = 0;

	netxen_rom_fast_read(adapter,
			NX_FW_VERSION_OFFSET, (int *)&flashed_ver);
	if (flashed_ver >= NETXEN_VERSION_CODE(4, 0, 220)) {
		capability = NXRD32(adapter, NX_PEG_TUNE_CAPABILITY);
		if (capability & NX_PEG_TUNE_MN_PRESENT) {
			fw_type = NX_P3_MN_ROMIMAGE;
			goto request_fw;
		}
	}

request_fw:
	rc = request_firmware(&adapter->fw, fw_name[fw_type], &pdev->dev);
	if (rc != 0) {
		if (fw_type == NX_P3_CT_ROMIMAGE) {
			msleep(1);
			goto request_mn;
		}

		adapter->fw = NULL;
		goto done;
	}

	rc = netxen_validate_firmware(adapter, fw_name[fw_type]);
	if (rc != 0) {
		release_firmware(adapter->fw);

		if (fw_type == NX_P3_CT_ROMIMAGE) {
			msleep(1);
			goto request_mn;
		}

		adapter->fw = NULL;
		goto done;
	}

done:
	if (adapter->fw)
		dev_info(&pdev->dev, "loading firmware from file %s\n",
				fw_name[fw_type]);
	else
		dev_info(&pdev->dev, "loading firmware from flash\n");
}


void
netxen_release_firmware(struct netxen_adapter *adapter)
{
	if (adapter->fw)
		release_firmware(adapter->fw);
}

882 883 884 885 886 887 888
int netxen_initialize_adapter_offload(struct netxen_adapter *adapter)
{
	uint64_t addr;
	uint32_t hi;
	uint32_t lo;

	adapter->dummy_dma.addr =
889
	    pci_alloc_consistent(adapter->pdev,
890 891 892 893
				 NETXEN_HOST_DUMMY_DMA_SIZE,
				 &adapter->dummy_dma.phys_addr);
	if (adapter->dummy_dma.addr == NULL) {
		printk("%s: ERROR: Could not allocate dummy DMA memory\n",
894
		       __func__);
895 896 897 898 899 900 901
		return -ENOMEM;
	}

	addr = (uint64_t) adapter->dummy_dma.phys_addr;
	hi = (addr >> 32) & 0xffffffff;
	lo = addr & 0xffffffff;

902 903
	NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_HI, hi);
	NXWR32(adapter, CRB_HOST_DUMMY_BUF_ADDR_LO, lo);
904

905 906
	if (NX_IS_REVISION_P3(adapter->ahw.revision_id)) {
		uint32_t temp = 0;
907
		NXWR32(adapter, CRB_HOST_DUMMY_BUF, temp);
908 909
	}

910 911 912 913 914
	return 0;
}

void netxen_free_adapter_offload(struct netxen_adapter *adapter)
{
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	int i = 100;

	if (!adapter->dummy_dma.addr)
		return;
919

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	if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
921 922 923 924 925 926 927
		do {
			if (dma_watchdog_shutdown_request(adapter) == 1)
				break;
			msleep(50);
			if (dma_watchdog_shutdown_poll_result(adapter) == 1)
				break;
		} while (--i);
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	}
929

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	if (i) {
		pci_free_consistent(adapter->pdev,
			    NETXEN_HOST_DUMMY_DMA_SIZE,
			    adapter->dummy_dma.addr,
			    adapter->dummy_dma.phys_addr);
		adapter->dummy_dma.addr = NULL;
	} else {
		printk(KERN_ERR "%s: dma_watchdog_shutdown failed\n",
				adapter->netdev->name);
939 940 941
	}
}

942
int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val)
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{
	u32 val = 0;
945
	int retries = 60;
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946

947
	if (!pegtune_val) {
948
		do {
949
			val = NXRD32(adapter, CRB_CMDPEG_STATE);
950 951 952 953 954

			if (val == PHAN_INITIALIZE_COMPLETE ||
				val == PHAN_INITIALIZE_ACK)
				return 0;

955 956
			msleep(500);

957
		} while (--retries);
958

959
		if (!retries) {
960
			pegtune_val = NXRD32(adapter,
961
					NETXEN_ROMUSB_GLB_PEGTUNE_DONE);
962 963 964
			printk(KERN_WARNING "netxen_phantom_init: init failed, "
					"pegtune_val=%x\n", pegtune_val);
			return -1;
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		}
	}
967 968

	return 0;
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}

971 972
static int
netxen_receive_peg_ready(struct netxen_adapter *adapter)
973 974 975 976 977
{
	u32 val = 0;
	int retries = 2000;

	do {
978
		val = NXRD32(adapter, CRB_RCVPEG_STATE);
979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995

		if (val == PHAN_PEG_RCV_INITIALIZED)
			return 0;

		msleep(10);

	} while (--retries);

	if (!retries) {
		printk(KERN_ERR "Receive Peg initialization not "
			      "complete, state: 0x%x.\n", val);
		return -EIO;
	}

	return 0;
}

996 997 998 999 1000 1001 1002 1003
int netxen_init_firmware(struct netxen_adapter *adapter)
{
	int err;

	err = netxen_receive_peg_ready(adapter);
	if (err)
		return err;

1004 1005 1006 1007
	NXWR32(adapter, CRB_NIC_CAPABILITIES_HOST, INTR_SCHEME_PERPORT);
	NXWR32(adapter, CRB_NIC_MSI_MODE_HOST, MSI_MODE_MULTIFUNC);
	NXWR32(adapter, CRB_MPORT_MODE, MPORT_MULTI_FUNCTION_MODE);
	NXWR32(adapter, CRB_CMDPEG_STATE, PHAN_INITIALIZE_ACK);
1008

1009
	if (adapter->fw_version >= NETXEN_VERSION_CODE(4, 0, 222)) {
1010
		adapter->capabilities = NXRD32(adapter, CRB_FW_CAPABILITIES_1);
1011 1012
	}

1013 1014 1015
	return err;
}

1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082
static void
netxen_handle_linkevent(struct netxen_adapter *adapter, nx_fw_msg_t *msg)
{
	u32 cable_OUI;
	u16 cable_len;
	u16 link_speed;
	u8  link_status, module, duplex, autoneg;
	struct net_device *netdev = adapter->netdev;

	adapter->has_link_events = 1;

	cable_OUI = msg->body[1] & 0xffffffff;
	cable_len = (msg->body[1] >> 32) & 0xffff;
	link_speed = (msg->body[1] >> 48) & 0xffff;

	link_status = msg->body[2] & 0xff;
	duplex = (msg->body[2] >> 16) & 0xff;
	autoneg = (msg->body[2] >> 24) & 0xff;

	module = (msg->body[2] >> 8) & 0xff;
	if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLE) {
		printk(KERN_INFO "%s: unsupported cable: OUI 0x%x, length %d\n",
				netdev->name, cable_OUI, cable_len);
	} else if (module == LINKEVENT_MODULE_TWINAX_UNSUPPORTED_CABLELEN) {
		printk(KERN_INFO "%s: unsupported cable length %d\n",
				netdev->name, cable_len);
	}

	netxen_advert_link_change(adapter, link_status);

	/* update link parameters */
	if (duplex == LINKEVENT_FULL_DUPLEX)
		adapter->link_duplex = DUPLEX_FULL;
	else
		adapter->link_duplex = DUPLEX_HALF;
	adapter->module_type = module;
	adapter->link_autoneg = autoneg;
	adapter->link_speed = link_speed;
}

static void
netxen_handle_fw_message(int desc_cnt, int index,
		struct nx_host_sds_ring *sds_ring)
{
	nx_fw_msg_t msg;
	struct status_desc *desc;
	int i = 0, opcode;

	while (desc_cnt > 0 && i < 8) {
		desc = &sds_ring->desc_head[index];
		msg.words[i++] = le64_to_cpu(desc->status_desc_data[0]);
		msg.words[i++] = le64_to_cpu(desc->status_desc_data[1]);

		index = get_next_index(index, sds_ring->num_desc);
		desc_cnt--;
	}

	opcode = netxen_get_nic_msg_opcode(msg.body[0]);
	switch (opcode) {
	case NX_NIC_C2H_OPCODE_GET_LINKEVENT_RESPONSE:
		netxen_handle_linkevent(sds_ring->adapter, &msg);
		break;
	default:
		break;
	}
}

1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116
static int
netxen_alloc_rx_skb(struct netxen_adapter *adapter,
		struct nx_host_rds_ring *rds_ring,
		struct netxen_rx_buffer *buffer)
{
	struct sk_buff *skb;
	dma_addr_t dma;
	struct pci_dev *pdev = adapter->pdev;

	buffer->skb = dev_alloc_skb(rds_ring->skb_size);
	if (!buffer->skb)
		return 1;

	skb = buffer->skb;

	if (!adapter->ahw.cut_through)
		skb_reserve(skb, 2);

	dma = pci_map_single(pdev, skb->data,
			rds_ring->dma_size, PCI_DMA_FROMDEVICE);

	if (pci_dma_mapping_error(pdev, dma)) {
		dev_kfree_skb_any(skb);
		buffer->skb = NULL;
		return 1;
	}

	buffer->skb = skb;
	buffer->dma = dma;
	buffer->state = NETXEN_BUFFER_BUSY;

	return 0;
}

1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145
static struct sk_buff *netxen_process_rxbuf(struct netxen_adapter *adapter,
		struct nx_host_rds_ring *rds_ring, u16 index, u16 cksum)
{
	struct netxen_rx_buffer *buffer;
	struct sk_buff *skb;

	buffer = &rds_ring->rx_buf_arr[index];

	pci_unmap_single(adapter->pdev, buffer->dma, rds_ring->dma_size,
			PCI_DMA_FROMDEVICE);

	skb = buffer->skb;
	if (!skb)
		goto no_skb;

	if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) {
		adapter->stats.csummed++;
		skb->ip_summed = CHECKSUM_UNNECESSARY;
	} else
		skb->ip_summed = CHECKSUM_NONE;

	skb->dev = adapter->netdev;

	buffer->skb = NULL;
no_skb:
	buffer->state = NETXEN_BUFFER_FREE;
	return skb;
}

1146
static struct netxen_rx_buffer *
D
Dhananjay Phadke 已提交
1147
netxen_process_rcv(struct netxen_adapter *adapter,
A
Amit Kumar Salecha 已提交
1148 1149
		int ring, int index, int length, int cksum, int pkt_offset,
		struct nx_host_sds_ring *sds_ring)
A
Amit S. Kale 已提交
1150
{
1151
	struct net_device *netdev = adapter->netdev;
1152
	struct netxen_recv_context *recv_ctx = &adapter->recv_ctx;
A
Amit S. Kale 已提交
1153 1154
	struct netxen_rx_buffer *buffer;
	struct sk_buff *skb;
D
Dhananjay Phadke 已提交
1155
	struct nx_host_rds_ring *rds_ring = &recv_ctx->rds_rings[ring];
A
Amit S. Kale 已提交
1156

1157
	if (unlikely(index > rds_ring->num_desc))
1158
		return NULL;
1159

D
Dhananjay Phadke 已提交
1160
	buffer = &rds_ring->rx_buf_arr[index];
A
Amit S. Kale 已提交
1161

1162 1163
	skb = netxen_process_rxbuf(adapter, rds_ring, index, cksum);
	if (!skb)
1164
		return buffer;
D
Dhananjay Phadke 已提交
1165

D
Dhananjay Phadke 已提交
1166 1167 1168 1169
	if (length > rds_ring->skb_size)
		skb_put(skb, rds_ring->skb_size);
	else
		skb_put(skb, length);
1170

D
Dhananjay Phadke 已提交
1171 1172 1173

	if (pkt_offset)
		skb_pull(skb, pkt_offset);
1174

A
Amit S. Kale 已提交
1175 1176
	skb->protocol = eth_type_trans(skb, netdev);

A
Amit Kumar Salecha 已提交
1177
	napi_gro_receive(&sds_ring->napi, skb);
1178

D
Dhananjay Phadke 已提交
1179 1180
	adapter->stats.no_rcv++;
	adapter->stats.rxbytes += length;
1181 1182

	return buffer;
A
Amit S. Kale 已提交
1183 1184
}

1185 1186 1187
#define netxen_merge_rx_buffers(list, head) \
	do { list_splice_tail_init(list, head); } while (0);

1188
int
1189
netxen_process_rcv_ring(struct nx_host_sds_ring *sds_ring, int max)
A
Amit S. Kale 已提交
1190
{
1191 1192 1193 1194
	struct netxen_adapter *adapter = sds_ring->adapter;

	struct list_head *cur;

D
Dhananjay Phadke 已提交
1195
	struct status_desc *desc;
1196 1197 1198 1199
	struct netxen_rx_buffer *rxbuf;

	u32 consumer = sds_ring->consumer;

D
Dhananjay Phadke 已提交
1200
	int count = 0;
1201
	u64 sts_data;
1202
	int opcode, ring, index, length, cksum, pkt_offset, desc_cnt;
A
Amit S. Kale 已提交
1203 1204

	while (count < max) {
1205
		desc = &sds_ring->desc_head[consumer];
1206
		sts_data = le64_to_cpu(desc->status_desc_data[0]);
D
Dhananjay Phadke 已提交
1207 1208

		if (!(sts_data & STATUS_OWNER_HOST))
A
Amit S. Kale 已提交
1209
			break;
1210

1211
		desc_cnt = netxen_get_sts_desc_cnt(sts_data);
D
Dhananjay Phadke 已提交
1212
		ring   = netxen_get_sts_type(sts_data);
1213

D
Dhananjay Phadke 已提交
1214
		if (ring > RCV_RING_JUMBO)
1215
			goto skip;
D
Dhananjay Phadke 已提交
1216

1217 1218
		opcode = netxen_get_sts_opcode(sts_data);

1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230
		switch (opcode) {
		case NETXEN_NIC_RXPKT_DESC:
		case NETXEN_OLD_RXPKT_DESC:
			break;
		case NETXEN_NIC_RESPONSE_DESC:
			netxen_handle_fw_message(desc_cnt, consumer, sds_ring);
		default:
			goto skip;
		}

		WARN_ON(desc_cnt > 1);

D
Dhananjay Phadke 已提交
1231 1232 1233 1234 1235
		index  = netxen_get_sts_refhandle(sts_data);
		length = netxen_get_sts_totallength(sts_data);
		cksum  = netxen_get_sts_status(sts_data);
		pkt_offset = netxen_get_sts_pkt_offset(sts_data);

1236
		rxbuf = netxen_process_rcv(adapter, ring, index,
A
Amit Kumar Salecha 已提交
1237
				length, cksum, pkt_offset, sds_ring);
1238

1239 1240 1241
		if (rxbuf)
			list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);

1242 1243 1244 1245 1246 1247 1248
skip:
		for (; desc_cnt > 0; desc_cnt--) {
			desc = &sds_ring->desc_head[consumer];
			desc->status_desc_data[0] =
				cpu_to_le64(STATUS_OWNER_PHANTOM);
			consumer = get_next_index(consumer, sds_ring->num_desc);
		}
A
Amit S. Kale 已提交
1249 1250
		count++;
	}
D
Dhananjay Phadke 已提交
1251

1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269
	for (ring = 0; ring < adapter->max_rds_rings; ring++) {
		struct nx_host_rds_ring *rds_ring =
			&adapter->recv_ctx.rds_rings[ring];

		if (!list_empty(&sds_ring->free_list[ring])) {
			list_for_each(cur, &sds_ring->free_list[ring]) {
				rxbuf = list_entry(cur,
						struct netxen_rx_buffer, list);
				netxen_alloc_rx_skb(adapter, rds_ring, rxbuf);
			}
			spin_lock(&rds_ring->lock);
			netxen_merge_rx_buffers(&sds_ring->free_list[ring],
						&rds_ring->free_list);
			spin_unlock(&rds_ring->lock);
		}

		netxen_post_rx_buffers_nodb(adapter, rds_ring);
	}
A
Amit S. Kale 已提交
1270 1271

	if (count) {
1272
		sds_ring->consumer = consumer;
1273
		NXWR32(adapter, sds_ring->crb_sts_consumer, consumer);
A
Amit S. Kale 已提交
1274 1275 1276 1277 1278 1279
	}

	return count;
}

/* Process Command status ring */
D
Dhananjay Phadke 已提交
1280
int netxen_process_cmd_ring(struct netxen_adapter *adapter)
A
Amit S. Kale 已提交
1281
{
1282
	u32 sw_consumer, hw_consumer;
1283
	int count = 0, i;
A
Amit S. Kale 已提交
1284
	struct netxen_cmd_buffer *buffer;
1285 1286
	struct pci_dev *pdev = adapter->pdev;
	struct net_device *netdev = adapter->netdev;
A
Amit S. Kale 已提交
1287
	struct netxen_skb_frag *frag;
1288
	int done = 0;
1289
	struct nx_host_tx_ring *tx_ring = adapter->tx_ring;
A
Amit S. Kale 已提交
1290

1291 1292 1293
	if (!spin_trylock(&adapter->tx_clean_lock))
		return 1;

1294 1295
	sw_consumer = tx_ring->sw_consumer;
	hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
A
Amit S. Kale 已提交
1296

1297 1298
	while (sw_consumer != hw_consumer) {
		buffer = &tx_ring->cmd_buf_arr[sw_consumer];
1299 1300
		if (buffer->skb) {
			frag = &buffer->frag_array[0];
A
Amit S. Kale 已提交
1301 1302
			pci_unmap_single(pdev, frag->dma, frag->length,
					 PCI_DMA_TODEVICE);
1303
			frag->dma = 0ULL;
A
Amit S. Kale 已提交
1304 1305 1306 1307
			for (i = 1; i < buffer->frag_count; i++) {
				frag++;	/* Get the next frag */
				pci_unmap_page(pdev, frag->dma, frag->length,
					       PCI_DMA_TODEVICE);
1308
				frag->dma = 0ULL;
A
Amit S. Kale 已提交
1309 1310
			}

1311
			adapter->stats.xmitfinished++;
1312 1313
			dev_kfree_skb_any(buffer->skb);
			buffer->skb = NULL;
A
Amit S. Kale 已提交
1314 1315
		}

1316
		sw_consumer = get_next_index(sw_consumer, tx_ring->num_desc);
1317 1318
		if (++count >= MAX_STATUS_HANDLE)
			break;
A
Amit S. Kale 已提交
1319 1320
	}

1321
	if (count && netif_running(netdev)) {
1322 1323
		tx_ring->sw_consumer = sw_consumer;

1324
		smp_mb();
1325

1326
		if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev)) {
1327
			netif_tx_lock(netdev);
1328 1329
			if (netxen_tx_avail(tx_ring) > TX_STOP_THRESH)
				netif_wake_queue(netdev);
1330
			netif_tx_unlock(netdev);
A
Amit S. Kale 已提交
1331 1332
		}
	}
1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345
	/*
	 * If everything is freed up to consumer then check if the ring is full
	 * If the ring is full then check if more needs to be freed and
	 * schedule the call back again.
	 *
	 * This happens when there are 2 CPUs. One could be freeing and the
	 * other filling it. If the ring is full when we get out of here and
	 * the card has already interrupted the host then the host can miss the
	 * interrupt.
	 *
	 * There is still a possible race condition and the host could miss an
	 * interrupt. The card has to take care of this.
	 */
1346 1347
	hw_consumer = le32_to_cpu(*(tx_ring->hw_consumer));
	done = (sw_consumer == hw_consumer);
1348
	spin_unlock(&adapter->tx_clean_lock);
A
Amit S. Kale 已提交
1349

1350
	return (done);
A
Amit S. Kale 已提交
1351 1352
}

1353
void
1354 1355
netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
	struct nx_host_rds_ring *rds_ring)
A
Amit S. Kale 已提交
1356 1357 1358
{
	struct rcv_desc *pdesc;
	struct netxen_rx_buffer *buffer;
1359
	int producer, count = 0;
1360
	netxen_ctx_msg msg = 0;
1361
	struct list_head *head;
A
Amit S. Kale 已提交
1362

D
Dhananjay Phadke 已提交
1363
	producer = rds_ring->producer;
1364

1365 1366
	spin_lock(&rds_ring->lock);
	head = &rds_ring->free_list;
1367 1368
	while (!list_empty(head)) {

1369
		buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1370

1371 1372 1373
		if (!buffer->skb) {
			if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
				break;
1374 1375 1376
		}

		count++;
1377 1378
		list_del(&buffer->list);

1379
		/* make a rcv descriptor  */
1380
		pdesc = &rds_ring->desc_head[producer];
1381
		pdesc->addr_buffer = cpu_to_le64(buffer->dma);
A
Amit S. Kale 已提交
1382
		pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
D
Dhananjay Phadke 已提交
1383
		pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
1384

1385
		producer = get_next_index(producer, rds_ring->num_desc);
1386
	}
1387
	spin_unlock(&rds_ring->lock);
D
Dhananjay Phadke 已提交
1388

1389
	if (count) {
D
Dhananjay Phadke 已提交
1390
		rds_ring->producer = producer;
1391
		NXWR32(adapter, rds_ring->crb_rcv_producer,
1392
				(producer-1) & (rds_ring->num_desc-1));
D
Dhananjay Phadke 已提交
1393 1394

		if (adapter->fw_major < 4) {
1395 1396 1397
			/*
			 * Write a doorbell msg to tell phanmon of change in
			 * receive ring producer
D
Dhananjay Phadke 已提交
1398
			 * Only for firmware version < 4.0.0
1399 1400 1401 1402
			 */
			netxen_set_msg_peg_id(msg, NETXEN_RCV_PEG_DB_ID);
			netxen_set_msg_privid(msg);
			netxen_set_msg_count(msg,
1403 1404
					     ((producer - 1) &
					      (rds_ring->num_desc - 1)));
1405
			netxen_set_msg_ctxid(msg, adapter->portnum);
1406 1407 1408 1409
			netxen_set_msg_opcode(msg, NETXEN_RCV_PRODUCER(ringid));
			writel(msg,
			       DB_NORMALIZE(adapter,
					    NETXEN_RCV_PRODUCER_OFFSET));
D
Dhananjay Phadke 已提交
1410
		}
1411 1412 1413
	}
}

1414
static void
1415 1416
netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
		struct nx_host_rds_ring *rds_ring)
1417 1418 1419
{
	struct rcv_desc *pdesc;
	struct netxen_rx_buffer *buffer;
1420
	int producer, count = 0;
1421
	struct list_head *head;
1422

D
Dhananjay Phadke 已提交
1423
	producer = rds_ring->producer;
1424 1425 1426
	if (!spin_trylock(&rds_ring->lock))
		return;

1427 1428 1429
	head = &rds_ring->free_list;
	while (!list_empty(head)) {

1430
		buffer = list_entry(head->next, struct netxen_rx_buffer, list);
1431

1432 1433 1434
		if (!buffer->skb) {
			if (netxen_alloc_rx_skb(adapter, rds_ring, buffer))
				break;
1435 1436 1437
		}

		count++;
1438 1439
		list_del(&buffer->list);

A
Amit S. Kale 已提交
1440
		/* make a rcv descriptor  */
1441
		pdesc = &rds_ring->desc_head[producer];
A
Amit S. Kale 已提交
1442
		pdesc->reference_handle = cpu_to_le16(buffer->ref_handle);
D
Dhananjay Phadke 已提交
1443
		pdesc->buffer_length = cpu_to_le32(rds_ring->dma_size);
A
Amit S. Kale 已提交
1444
		pdesc->addr_buffer = cpu_to_le64(buffer->dma);
1445

1446
		producer = get_next_index(producer, rds_ring->num_desc);
A
Amit S. Kale 已提交
1447 1448 1449
	}

	if (count) {
D
Dhananjay Phadke 已提交
1450
		rds_ring->producer = producer;
1451
		NXWR32(adapter, rds_ring->crb_rcv_producer,
1452
				(producer - 1) & (rds_ring->num_desc - 1));
A
Amit S. Kale 已提交
1453
	}
1454
	spin_unlock(&rds_ring->lock);
A
Amit S. Kale 已提交
1455 1456 1457 1458 1459
}

void netxen_nic_clear_stats(struct netxen_adapter *adapter)
{
	memset(&adapter->stats, 0, sizeof(adapter->stats));
1460
	return;
A
Amit S. Kale 已提交
1461 1462
}