netxen_nic_init.c

/*
 * Copyright (C) 2003 - 2009 NetXen, Inc.
 * Copyright (C) 2009 - QLogic Corporation.
 * All rights reserved.
 *
 * 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.
 *
 * 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.
 *
 * 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.
 *
 * The full GNU General Public License is included in this distribution
 * in the file called "COPYING".
 *
 */

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

struct crb_addr_pair {
	u32 addr;
	u32 data;
};

#define NETXEN_MAX_CRB_XFORM 60
static unsigned int crb_addr_xform[NETXEN_MAX_CRB_XFORM];
#define NETXEN_ADDR_ERROR (0xffffffff)

#define crb_addr_transform(name) \
	crb_addr_xform[NETXEN_HW_PX_MAP_CRB_##name] = \
	NETXEN_HW_CRB_HUB_AGT_ADR_##name << 20

#define NETXEN_NIC_XDMA_RESET 0x8000ff

static void
netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
		struct nx_host_rds_ring *rds_ring);
static int netxen_p3_has_mn(struct netxen_adapter *adapter);

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);
	crb_addr_transform(SMB);
	crb_addr_transform(OCM0);
	crb_addr_transform(I2C0);
}

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

	recv_ctx = &adapter->recv_ctx;
	for (ring = 0; ring < adapter->max_rds_rings; ring++) {
		rds_ring = &recv_ctx->rds_rings[ring];
		for (i = 0; i < rds_ring->num_desc; ++i) {
			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);
		}
	}
}

void netxen_release_tx_buffers(struct netxen_adapter *adapter)
{
	struct netxen_cmd_buffer *cmd_buf;
	struct netxen_skb_frag *buffrag;
	int i, j;
	struct nx_host_tx_ring *tx_ring = adapter->tx_ring;

	cmd_buf = tx_ring->cmd_buf_arr;
	for (i = 0; i < tx_ring->num_desc; i++) {
		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;
	struct nx_host_rds_ring *rds_ring;
	struct nx_host_tx_ring *tx_ring;
	int ring;

	recv_ctx = &adapter->recv_ctx;

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

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

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

	tx_ring = adapter->tx_ring;
	vfree(tx_ring->cmd_buf_arr);
	kfree(tx_ring);
	adapter->tx_ring = NULL;
}

int netxen_alloc_sw_resources(struct netxen_adapter *adapter)
{
	struct netxen_recv_context *recv_ctx;
	struct nx_host_rds_ring *rds_ring;
	struct nx_host_sds_ring *sds_ring;
	struct nx_host_tx_ring *tx_ring;
	struct netxen_rx_buffer *rx_buf;
	int ring, i, size;