linux-vybrid_public/drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c

/*
 * QLogic qlcnic NIC Driver
 * Copyright (c)  2009-2010 QLogic Corporation
 *
 * See LICENSE.qlcnic for copyright and licensing details.
 */

#include "qlcnic.h"

#include <linux/slab.h>
#include <net/ip.h>
#include <linux/bitops.h>

#define MASK(n) ((1ULL<<(n))-1)
#define OCM_WIN_P3P(addr) (addr & 0xffc0000)

#define GET_MEM_OFFS_2M(addr) (addr & MASK(18))

#define CRB_BLK(off)	((off >> 20) & 0x3f)
#define CRB_SUBBLK(off)	((off >> 16) & 0xf)
#define CRB_WINDOW_2M	(0x130060)
#define CRB_HI(off)	((crb_hub_agt[CRB_BLK(off)] << 20) | ((off) & 0xf0000))
#define CRB_INDIRECT_2M	(0x1e0000UL)


#ifndef readq
static inline u64 readq(void __iomem *addr)
{
	return readl(addr) | (((u64) readl(addr + 4)) << 32LL);
}
#endif

#ifndef writeq
static inline void writeq(u64 val, void __iomem *addr)
{
	writel(((u32) (val)), (addr));
	writel(((u32) (val >> 32)), (addr + 4));
}
#endif

static struct crb_128M_2M_block_map
crb_128M_2M_map[64] __cacheline_aligned_in_smp = {
    {{{0, 0,         0,         0} } },		/* 0: PCI */
    {{{1, 0x0100000, 0x0102000, 0x120000},	/* 1: PCIE */
	  {1, 0x0110000, 0x0120000, 0x130000},
	  {1, 0x0120000, 0x0122000, 0x124000},
	  {1, 0x0130000, 0x0132000, 0x126000},
	  {1, 0x0140000, 0x0142000, 0x128000},
	  {1, 0x0150000, 0x0152000, 0x12a000},
	  {1, 0x0160000, 0x0170000, 0x110000},
	  {1, 0x0170000, 0x0172000, 0x12e000},
	  {0, 0x0000000, 0x0000000, 0x000000},
	  {0, 0x0000000, 0x0000000, 0x000000},
	  {0, 0x0000000, 0x0000000, 0x000000},
	  {0, 0x0000000, 0x0000000, 0x000000},
	  {0, 0x0000000, 0x0000000, 0x000000},
	  {0, 0x0000000, 0x0000000, 0x000000},
	  {1, 0x01e0000, 0x01e0800, 0x122000},
	  {0, 0x0000000, 0x0000000, 0x000000} } },
	{{{1, 0x0200000, 0x0210000, 0x180000} } },/* 2: MN */
    {{{0, 0,         0,         0} } },	    /* 3: */
    {{{1, 0x0400000, 0x0401000, 0x169000} } },/* 4: P2NR1 */
    {{{1, 0x0500000, 0x0510000, 0x140000} } },/* 5: SRE   */
    {{{1, 0x0600000, 0x0610000, 0x1c0000} } },/* 6: NIU   */
    {{{1, 0x0700000, 0x0704000, 0x1b8000} } },/* 7: QM    */
    {{{1, 0x0800000, 0x0802000, 0x170000},  /* 8: SQM0  */
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {1, 0x08f0000, 0x08f2000, 0x172000} } },
    {{{1, 0x0900000, 0x0902000, 0x174000},	/* 9: SQM1*/
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {1, 0x09f0000, 0x09f2000, 0x176000} } },
    {{{0, 0x0a00000, 0x0a02000, 0x178000},	/* 10: SQM2*/
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {1, 0x0af0000, 0x0af2000, 0x17a000} } },
    {{{0, 0x0b00000, 0x0b02000, 0x17c000},	/* 11: SQM3*/
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {0, 0x0000000, 0x0000000, 0x000000},
      {1, 0x0bf0000, 0x0bf2000, 0x17e000} } },
	{{{1, 0x0c00000, 0x0c04000, 0x1d4000} } },/* 12: I2Q */
	{{{1, 0x0d00000, 0x0d04000, 0x1a4000} } },/* 13: TMR */
	{{{1, 0x0e00000, 0x0e04000, 0x1a0000} } },/* 14: ROMUSB */
	{{{1, 0x0f00000, 0x0f01000, 0x164000} } },/* 15: PEG4 */
	{{{0, 0x1000000, 0x1004000, 0x1a8000} } },/* 16: XDMA */
	{{{1, 0x1100000, 0x1101000, 0x160000} } },/* 17: PEG0 */
	{{{1, 0x1200000, 0x1201000, 0x161000} } },/* 18: PEG1 */
	{{{1, 0x1300000, 0x1301000, 0x162000} } },/* 19: PEG2 */
	{{{1, 0x1400000, 0x1401000, 0x163000} } },/* 20: PEG3 */
	{{{1, 0x1500000, 0x1501000, 0x165000} } },/* 21: P2ND */
	{{{1, 0x1600000, 0x1601000, 0x166000} } },/* 22: P2NI */
	{{{0, 0,         0,         0} } },	/* 23: */
	{{{0, 0,         0,         0} } },	/* 24: */
	{{{0, 0,         0,         0} } },	/* 25: */
	{{{0, 0,         0,         0} } },	/* 26: */
	{{{0, 0,         0,         0} } },	/* 27: */
	{{{0, 0,         0,         0} } },	/* 28: */
	{{{1, 0x1d00000, 0x1d10000, 0x190000} } },/* 29: MS */
    {{{1, 0x1e00000, 0x1e01000, 0x16a000} } },/* 30: P2NR2 */
    {{{1, 0x1f00000, 0x1f10000, 0x150000} } },/* 31: EPG */
	{{{0} } },				/* 32: PCI */
	{{{1, 0x2100000, 0x2102000, 0x120000},	/* 33: PCIE */
	  {1, 0x2110000, 0x2120000, 0x130000},
	  {1, 0x2120000, 0x2122000, 0x124000},
	  {1, 0x2130000, 0x2132000, 0x126000},
	  {1, 0x2140000, 0x2142000, 0x128000},
	  {1, 0x2150000, 0x2152000, 0x12a000},
	  {1, 0x2160000, 0x2170000, 0x110000},
	  {1, 0x2170000, 0x2172000, 0x12e000},
	  {0, 0x0000000, 0x0000000, 0x000000},
	  {0, 0x0000000, 0x0000000, 0x000000},
	  {0, 0x0000000, 0x0000000, 0x000000},
	  {0, 0x0000000, 0x0000000, 0x000000},
	  {0, 0x0000000, 0x0000000, 0x000000},
	  {0, 0x0000000, 0x0000000, 0x000000},
	  {0, 0x0000000, 0x0000000, 0x000000},
	  {0, 0x0000000, 0x0000000, 0x000000} } },
	{{{1, 0x2200000, 0x2204000, 0x1b0000} } },/* 34: CAM */
	{{{0} } },				/* 35: */
	{{{0} } },				/* 36: */
	{{{0} } },				/* 37: */
	{{{0} } },				/* 38: */
	{{{0} } },				/* 39: */
	{{{1, 0x2800000, 0x2804000, 0x1a4000} } },/* 40: TMR */
	{{{1, 0x2900000, 0x2901000, 0x16b000} } },/* 41: P2NR3 */
	{{{1, 0x2a00000, 0x2a00400, 0x1ac400} } },/* 42: RPMX1 */
	{{{1, 0x2b00000, 0x2b00400, 0x1ac800} } },/* 43: RPMX2 */
	{{{1, 0x2c00000, 0x2c00400, 0x1acc00} } },/* 44: RPMX3 */
	{{{1, 0x2d00000, 0x2d00400, 0x1ad000} } },/* 45: RPMX4 */
	{{{1, 0x2e00000, 0x2e00400, 0x1ad400} } },/* 46: RPMX5 */
	{{{1, 0x2f00000, 0x2f00400, 0x1ad800} } },/* 47: RPMX6 */
	{{{1, 0x3000000, 0x3000400, 0x1adc00} } },/* 48: RPMX7 */
	{{{0, 0x3100000, 0x3104000, 0x1a8000} } },/* 49: XDMA */
	{{{1, 0x3200000, 0x3204000, 0x1d4000} } },/* 50: I2Q */
	{{{1, 0x3300000, 0x3304000, 0x1a0000} } },/* 51: ROMUSB */
	{{{0} } },				/* 52: */
	{{{1, 0x3500000, 0x3500400, 0x1ac000} } },/* 53: RPMX0 */
	{{{1, 0x3600000, 0x3600400, 0x1ae000} } },/* 54: RPMX8 */
	{{{1, 0x3700000, 0x3700400, 0x1ae400} } },/* 55: RPMX9 */
	{{{1, 0x3800000, 0x3804000, 0x1d0000} } },/* 56: OCM0 */
	{{{1, 0x3900000, 0x3904000, 0x1b4000} } },/* 57: CRYPTO */
	{{{1, 0x3a00000, 0x3a04000, 0x1d8000} } },/* 58: SMB */
	{{{0} } },				/* 59: I2C0 */
	{{{0} } },				/* 60: I2C1 */
	{{{1, 0x3d00000, 0x3d04000, 0x1d8000} } },/* 61: LPC */
	{{{1, 0x3e00000, 0x3e01000, 0x167000} } },/* 62: P2NC */
	{{{1, 0x3f00000, 0x3f01000, 0x168000} } }	/* 63: P2NR0 */
};

/*
 * top 12 bits of crb internal address (hub, agent)
 */
static const unsigned crb_hub_agt[64] = {
	0,
	QLCNIC_HW_CRB_HUB_AGT_ADR_PS,
	QLCNIC_HW_CRB_HUB_AGT_ADR_MN,
	QLCNIC_HW_CRB_HUB_AGT_ADR_MS,
	0,
	QLCNIC_HW_CRB_HUB_AGT_ADR_SRE,
	QLCNIC_HW_CRB_HUB_AGT_ADR_NIU,
	QLCNIC_HW_CRB_HUB_AGT_ADR_QMN,
	QLCNIC_HW_CRB_HUB_AGT_ADR_SQN0,
	QLCNIC_HW_CRB_HUB_AGT_ADR_SQN1,
	QLCNIC_HW_CRB_HUB_AGT_ADR_SQN2,
	QLCNIC_HW_CRB_HUB_AGT_ADR_SQN3,
	QLCNIC_HW_CRB_HUB_AGT_ADR_I2Q,
	QLCNIC_HW_CRB_HUB_AGT_ADR_TIMR,
	QLCNIC_HW_CRB_HUB_AGT_ADR_ROMUSB,
	QLCNIC_HW_CRB_HUB_AGT_ADR_PGN4,
	QLCNIC_HW_CRB_HUB_AGT_ADR_XDMA,
	QLCNIC_HW_CRB_HUB_AGT_ADR_PGN0,
	QLCNIC_HW_CRB_HUB_AGT_ADR_PGN1,
	QLCNIC_HW_CRB_HUB_AGT_ADR_PGN2,
	QLCNIC_HW_CRB_HUB_AGT_ADR_PGN3,
	QLCNIC_HW_CRB_HUB_AGT_ADR_PGND,
	QLCNIC_HW_CRB_HUB_AGT_ADR_PGNI,
	QLCNIC_HW_CRB_HUB_AGT_ADR_PGS0,
	QLCNIC_HW_CRB_HUB_AGT_ADR_PGS1,
	QLCNIC_HW_CRB_HUB_AGT_ADR_PGS2,
	QLCNIC_HW_CRB_HUB_AGT_ADR_PGS3,
	0,
	QLCNIC_HW_CRB_HUB_AGT_ADR_PGSI,
	QLCNIC_HW_CRB_HUB_AGT_ADR_SN,
	0,
	QLCNIC_HW_CRB_HUB_AGT_ADR_EG,
	0,
	QLCNIC_HW_CRB_HUB_AGT_ADR_PS,
	QLCNIC_HW_CRB_HUB_AGT_ADR_CAM,
	0,
	0,
	0,
	0,
	0,
	QLCNIC_HW_CRB_HUB_AGT_ADR_TIMR,
	0,
	QLCNIC_HW_CRB_HUB_AGT_ADR_RPMX1,
	QLCNIC_HW_CRB_HUB_AGT_ADR_RPMX2,
	QLCNIC_HW_CRB_HUB_AGT_ADR_RPMX3,
	QLCNIC_HW_CRB_HUB_AGT_ADR_RPMX4,
	QLCNIC_HW_CRB_HUB_AGT_ADR_RPMX5,
	QLCNIC_HW_CRB_HUB_AGT_ADR_RPMX6,
	QLCNIC_HW_CRB_HUB_AGT_ADR_RPMX7,
	QLCNIC_HW_CRB_HUB_AGT_ADR_XDMA,
	QLCNIC_HW_CRB_HUB_AGT_ADR_I2Q,
	QLCNIC_HW_CRB_HUB_AGT_ADR_ROMUSB,
	0,
	QLCNIC_HW_CRB_HUB_AGT_ADR_RPMX0,
	QLCNIC_HW_CRB_HUB_AGT_ADR_RPMX8,
	QLCNIC_HW_CRB_HUB_AGT_ADR_RPMX9,
	QLCNIC_HW_CRB_HUB_AGT_ADR_OCM0,
	0,
	QLCNIC_HW_CRB_HUB_AGT_ADR_SMB,
	QLCNIC_HW_CRB_HUB_AGT_ADR_I2C0,
	QLCNIC_HW_CRB_HUB_AGT_ADR_I2C1,
	0,
	QLCNIC_HW_CRB_HUB_AGT_ADR_PGNC,
	0,
};

static void qlcnic_read_dump_reg(u32 addr, void __iomem *bar0, u32 *data)
{
	u32 dest;
	void __iomem *window_reg;

	dest = addr & 0xFFFF0000;
	window_reg = bar0 + QLCNIC_FW_DUMP_REG1;
	writel(dest, window_reg);
	readl(window_reg);
	window_reg = bar0 + QLCNIC_FW_DUMP_REG2 + LSW(addr);
	*data = readl(window_reg);
}

static void qlcnic_write_dump_reg(u32 addr, void __iomem *bar0, u32 data)
{
	u32 dest;
	void __iomem *window_reg;

	dest = addr & 0xFFFF0000;
	window_reg = bar0 + QLCNIC_FW_DUMP_REG1;
	writel(dest, window_reg);
	readl(window_reg);
	window_reg = bar0 + QLCNIC_FW_DUMP_REG2 + LSW(addr);
	writel(data, window_reg);
	readl(window_reg);
}

/*  PCI Windowing for DDR regions.  */

#define QLCNIC_PCIE_SEM_TIMEOUT	10000

int
qlcnic_pcie_sem_lock(struct qlcnic_adapter *adapter, int sem, u32 id_reg)
{
	int done = 0, timeout = 0;

	while (!done) {
		done = QLCRD32(adapter, QLCNIC_PCIE_REG(PCIE_SEM_LOCK(sem)));
		if (done == 1)
			break;
		if (++timeout >= QLCNIC_PCIE_SEM_TIMEOUT) {
			dev_err(&adapter->pdev->dev,
				"Failed to acquire sem=%d lock; holdby=%d\n",
				sem, id_reg ? QLCRD32(adapter, id_reg) : -1);
			return -EIO;
		}
		msleep(1);
	}

	if (id_reg)
		QLCWR32(adapter, id_reg, adapter->portnum);

	return 0;
}

void
qlcnic_pcie_sem_unlock(struct qlcnic_adapter *adapter, int sem)
{
	QLCRD32(adapter, QLCNIC_PCIE_REG(PCIE_SEM_UNLOCK(sem)));
}

static int
qlcnic_send_cmd_descs(struct qlcnic_adapter *adapter,
		struct cmd_desc_type0 *cmd_desc_arr, int nr_desc)
{
	u32 i, producer, consumer;
	struct qlcnic_cmd_buffer *pbuf;
	struct cmd_desc_type0 *cmd_desc;
	struct qlcnic_host_tx_ring *tx_ring;

	i = 0;

	if (!test_bit(__QLCNIC_FW_ATTACHED, &adapter->state))
		return -EIO;

	tx_ring = adapter->tx_ring;
	__netif_tx_lock_bh(tx_ring->txq);

	producer = tx_ring->producer;
	consumer = tx_ring->sw_consumer;

	if (nr_desc >= qlcnic_tx_avail(tx_ring)) {
		netif_tx_stop_queue(tx_ring->txq);
		smp_mb();
		if (qlcnic_tx_avail(tx_ring) > nr_desc) {
			if (qlcnic_tx_avail(tx_ring) > TX_STOP_THRESH)
				netif_tx_wake_queue(tx_ring->txq);
		} else {
			adapter->stats.xmit_off++;
			__netif_tx_unlock_bh(tx_ring->txq);
			return -EBUSY;
		}
	}

	do {
		cmd_desc = &cmd_desc_arr[i];

		pbuf = &tx_ring->cmd_buf_arr[producer];
		pbuf->skb = NULL;
		pbuf->frag_count = 0;

		memcpy(&tx_ring->desc_head[producer],
			&cmd_desc_arr[i], sizeof(struct cmd_desc_type0));

		producer = get_next_index(producer, tx_ring->num_desc);
		i++;

	} while (i != nr_desc);

	tx_ring->producer = producer;

	qlcnic_update_cmd_producer(tx_ring);

	__netif_tx_unlock_bh(tx_ring->txq);

	return 0;
}

static int
qlcnic_sre_macaddr_change(struct qlcnic_adapter *adapter, u8 *addr,
				__le16 vlan_id, unsigned op)
{
	struct qlcnic_nic_req req;
	struct qlcnic_mac_req *mac_req;
	struct qlcnic_vlan_req *vlan_req;
	u64 word;

	memset(&req, 0, sizeof(struct qlcnic_nic_req));
	req.qhdr = cpu_to_le64(QLCNIC_REQUEST << 23);

	word = QLCNIC_MAC_EVENT | ((u64)adapter->portnum << 16);
	req.req_hdr = cpu_to_le64(word);

	mac_req = (struct qlcnic_mac_req *)&req.words[0];
	mac_req->op = op;
	memcpy(mac_req->mac_addr, addr, 6);

	vlan_req = (struct qlcnic_vlan_req *)&req.words[1];
	vlan_req->vlan_id = vlan_id;

	return qlcnic_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
}

static int qlcnic_nic_add_mac(struct qlcnic_adapter *adapter, const u8 *addr)
{
	struct list_head *head;
	struct qlcnic_mac_list_s *cur;

	/* look up if already exists */
	list_for_each(head, &adapter->mac_list) {
		cur = list_entry(head, struct qlcnic_mac_list_s, list);
		if (memcmp(addr, cur->mac_addr, ETH_ALEN) == 0)
			return 0;
	}

	cur = kzalloc(sizeof(struct qlcnic_mac_list_s), GFP_ATOMIC);
	if (cur == NULL) {
		dev_err(&adapter->netdev->dev,
			"failed to add mac address filter\n");
		return -ENOMEM;
	}
	memcpy(cur->mac_addr, addr, ETH_ALEN);

	if (qlcnic_sre_macaddr_change(adapter,
				cur->mac_addr, 0, QLCNIC_MAC_ADD)) {
		kfree(cur);
		return -EIO;
	}

	list_add_tail(&cur->list, &adapter->mac_list);
	return 0;
}

void qlcnic_set_multi(struct net_device *netdev)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);
	struct netdev_hw_addr *ha;
	static const u8 bcast_addr[ETH_ALEN] = {
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff
	};
	u32 mode = VPORT_MISS_MODE_DROP;

	if (!test_bit(__QLCNIC_FW_ATTACHED, &adapter->state))
		return;

	qlcnic_nic_add_mac(adapter, adapter->mac_addr);
	qlcnic_nic_add_mac(adapter, bcast_addr);

	if (netdev->flags & IFF_PROMISC) {
		if (!(adapter->flags & QLCNIC_PROMISC_DISABLED))
			mode = VPORT_MISS_MODE_ACCEPT_ALL;
		goto send_fw_cmd;
	}

	if ((netdev->flags & IFF_ALLMULTI) ||
	    (netdev_mc_count(netdev) > adapter->max_mc_count)) {
		mode = VPORT_MISS_MODE_ACCEPT_MULTI;
		goto send_fw_cmd;
	}

	if (!netdev_mc_empty(netdev)) {
		netdev_for_each_mc_addr(ha, netdev) {
			qlcnic_nic_add_mac(adapter, ha->addr);
		}
	}

send_fw_cmd:
	if (mode == VPORT_MISS_MODE_ACCEPT_ALL) {
		qlcnic_alloc_lb_filters_mem(adapter);
		adapter->mac_learn = 1;
	} else {
		adapter->mac_learn = 0;
	}

	qlcnic_nic_set_promisc(adapter, mode);
}

int qlcnic_nic_set_promisc(struct qlcnic_adapter *adapter, u32 mode)
{
	struct qlcnic_nic_req req;
	u64 word;

	memset(&req, 0, sizeof(struct qlcnic_nic_req));

	req.qhdr = cpu_to_le64(QLCNIC_HOST_REQUEST << 23);

	word = QLCNIC_H2C_OPCODE_SET_MAC_RECEIVE_MODE |
			((u64)adapter->portnum << 16);
	req.req_hdr = cpu_to_le64(word);

	req.words[0] = cpu_to_le64(mode);

	return qlcnic_send_cmd_descs(adapter,
				(struct cmd_desc_type0 *)&req, 1);
}

void qlcnic_free_mac_list(struct qlcnic_adapter *adapter)
{
	struct qlcnic_mac_list_s *cur;
	struct list_head *head = &adapter->mac_list;

	while (!list_empty(head)) {
		cur = list_entry(head->next, struct qlcnic_mac_list_s, list);
		qlcnic_sre_macaddr_change(adapter,
				cur->mac_addr, 0, QLCNIC_MAC_DEL);
		list_del(&cur->list);
		kfree(cur);
	}
}

void qlcnic_prune_lb_filters(struct qlcnic_adapter *adapter)
{
	struct qlcnic_filter *tmp_fil;
	struct hlist_node *tmp_hnode, *n;
	struct hlist_head *head;
	int i;

	for (i = 0; i < adapter->fhash.fmax; i++) {
		head = &(adapter->fhash.fhead[i]);

		hlist_for_each_entry_safe(tmp_fil, tmp_hnode, n, head, fnode)
		{
			if (jiffies >
				(QLCNIC_FILTER_AGE * HZ + tmp_fil->ftime)) {
				qlcnic_sre_macaddr_change(adapter,
					tmp_fil->faddr, tmp_fil->vlan_id,
					tmp_fil->vlan_id ? QLCNIC_MAC_VLAN_DEL :
					QLCNIC_MAC_DEL);
				spin_lock_bh(&adapter->mac_learn_lock);
				adapter->fhash.fnum--;
				hlist_del(&tmp_fil->fnode);
				spin_unlock_bh(&adapter->mac_learn_lock);
				kfree(tmp_fil);
			}
		}
	}
}

void qlcnic_delete_lb_filters(struct qlcnic_adapter *adapter)
{
	struct qlcnic_filter *tmp_fil;
	struct hlist_node *tmp_hnode, *n;
	struct hlist_head *head;
	int i;

	for (i = 0; i < adapter->fhash.fmax; i++) {
		head = &(adapter->fhash.fhead[i]);

		hlist_for_each_entry_safe(tmp_fil, tmp_hnode, n, head, fnode) {
			qlcnic_sre_macaddr_change(adapter, tmp_fil->faddr,
				tmp_fil->vlan_id, tmp_fil->vlan_id ?
				QLCNIC_MAC_VLAN_DEL :  QLCNIC_MAC_DEL);
			spin_lock_bh(&adapter->mac_learn_lock);
			adapter->fhash.fnum--;
			hlist_del(&tmp_fil->fnode);
			spin_unlock_bh(&adapter->mac_learn_lock);
			kfree(tmp_fil);
		}
	}
}

static int qlcnic_set_fw_loopback(struct qlcnic_adapter *adapter, u8 flag)
{
	struct qlcnic_nic_req req;
	int rv;

	memset(&req, 0, sizeof(struct qlcnic_nic_req));

	req.qhdr = cpu_to_le64(QLCNIC_HOST_REQUEST << 23);
	req.req_hdr = cpu_to_le64(QLCNIC_H2C_OPCODE_CONFIG_LOOPBACK |
		((u64) adapter->portnum << 16) | ((u64) 0x1 << 32));

	req.words[0] = cpu_to_le64(flag);

	rv = qlcnic_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
	if (rv != 0)
		dev_err(&adapter->pdev->dev, "%sting loopback mode failed\n",
				flag ? "Set" : "Reset");
	return rv;
}

int qlcnic_set_lb_mode(struct qlcnic_adapter *adapter, u8 mode)
{
	if (qlcnic_set_fw_loopback(adapter, mode))
		return -EIO;

	if (qlcnic_nic_set_promisc(adapter, VPORT_MISS_MODE_ACCEPT_ALL)) {
		qlcnic_set_fw_loopback(adapter, 0);
		return -EIO;
	}

	msleep(1000);
	return 0;
}

void qlcnic_clear_lb_mode(struct qlcnic_adapter *adapter)
{
	int mode = VPORT_MISS_MODE_DROP;
	struct net_device *netdev = adapter->netdev;

	qlcnic_set_fw_loopback(adapter, 0);

	if (netdev->flags & IFF_PROMISC)
		mode = VPORT_MISS_MODE_ACCEPT_ALL;
	else if (netdev->flags & IFF_ALLMULTI)
		mode = VPORT_MISS_MODE_ACCEPT_MULTI;

	qlcnic_nic_set_promisc(adapter, mode);
	msleep(1000);
}

/*
 * Send the interrupt coalescing parameter set by ethtool to the card.
 */
int qlcnic_config_intr_coalesce(struct qlcnic_adapter *adapter)
{
	struct qlcnic_nic_req req;
	int rv;

	memset(&req, 0, sizeof(struct qlcnic_nic_req));

	req.qhdr = cpu_to_le64(QLCNIC_HOST_REQUEST << 23);

	req.req_hdr = cpu_to_le64(QLCNIC_CONFIG_INTR_COALESCE |
		((u64) adapter->portnum << 16));

	req.words[0] = cpu_to_le64(((u64) adapter->ahw->coal.flag) << 32);
	req.words[2] = cpu_to_le64(adapter->ahw->coal.rx_packets |
			((u64) adapter->ahw->coal.rx_time_us) << 16);
	req.words[5] = cpu_to_le64(adapter->ahw->coal.timer_out |
			((u64) adapter->ahw->coal.type) << 32 |
			((u64) adapter->ahw->coal.sts_ring_mask) << 40);
	rv = qlcnic_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
	if (rv != 0)
		dev_err(&adapter->netdev->dev,
			"Could not send interrupt coalescing parameters\n");
	return rv;
}

int qlcnic_config_hw_lro(struct qlcnic_adapter *adapter, int enable)
{
	struct qlcnic_nic_req req;
	u64 word;
	int rv;

	if (!test_bit(__QLCNIC_FW_ATTACHED, &adapter->state))
		return 0;

	memset(&req, 0, sizeof(struct qlcnic_nic_req));

	req.qhdr = cpu_to_le64(QLCNIC_HOST_REQUEST << 23);

	word = QLCNIC_H2C_OPCODE_CONFIG_HW_LRO | ((u64)adapter->portnum << 16);
	req.req_hdr = cpu_to_le64(word);

	req.words[0] = cpu_to_le64(enable);

	rv = qlcnic_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
	if (rv != 0)
		dev_err(&adapter->netdev->dev,
			"Could not send configure hw lro request\n");

	return rv;
}

int qlcnic_config_bridged_mode(struct qlcnic_adapter *adapter, u32 enable)
{
	struct qlcnic_nic_req req;
	u64 word;
	int rv;

	if (!!(adapter->flags & QLCNIC_BRIDGE_ENABLED) == enable)
		return 0;

	memset(&req, 0, sizeof(struct qlcnic_nic_req));

	req.qhdr = cpu_to_le64(QLCNIC_HOST_REQUEST << 23);

	word = QLCNIC_H2C_OPCODE_CONFIG_BRIDGING |
		((u64)adapter->portnum << 16);
	req.req_hdr = cpu_to_le64(word);

	req.words[0] = cpu_to_le64(enable);

	rv = qlcnic_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
	if (rv != 0)
		dev_err(&adapter->netdev->dev,
			"Could not send configure bridge mode request\n");

	adapter->flags ^= QLCNIC_BRIDGE_ENABLED;

	return rv;
}


#define RSS_HASHTYPE_IP_TCP	0x3

int qlcnic_config_rss(struct qlcnic_adapter *adapter, int enable)
{
	struct qlcnic_nic_req req;
	u64 word;
	int i, rv;

	static const u64 key[] = {
		0xbeac01fa6a42b73bULL, 0x8030f20c77cb2da3ULL,
		0xae7b30b4d0ca2bcbULL, 0x43a38fb04167253dULL,
		0x255b0ec26d5a56daULL
	};

	memset(&req, 0, sizeof(struct qlcnic_nic_req));
	req.qhdr = cpu_to_le64(QLCNIC_HOST_REQUEST << 23);

	word = QLCNIC_H2C_OPCODE_CONFIG_RSS | ((u64)adapter->portnum << 16);
	req.req_hdr = cpu_to_le64(word);

	/*
	 * RSS request:
	 * bits 3-0: hash_method
	 *      5-4: hash_type_ipv4
	 *	7-6: hash_type_ipv6
	 *	  8: enable
	 *        9: use indirection table
	 *    47-10: reserved
	 *    63-48: indirection table mask
	 */
	word =  ((u64)(RSS_HASHTYPE_IP_TCP & 0x3) << 4) |
		((u64)(RSS_HASHTYPE_IP_TCP & 0x3) << 6) |
		((u64)(enable & 0x1) << 8) |
		((0x7ULL) << 48);
	req.words[0] = cpu_to_le64(word);
	for (i = 0; i < 5; i++)
		req.words[i+1] = cpu_to_le64(key[i]);

	rv = qlcnic_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
	if (rv != 0)
		dev_err(&adapter->netdev->dev, "could not configure RSS\n");

	return rv;
}

int qlcnic_config_ipaddr(struct qlcnic_adapter *adapter, __be32 ip, int cmd)
{
	struct qlcnic_nic_req req;
	struct qlcnic_ipaddr *ipa;
	u64 word;
	int rv;

	memset(&req, 0, sizeof(struct qlcnic_nic_req));
	req.qhdr = cpu_to_le64(QLCNIC_HOST_REQUEST << 23);

	word = QLCNIC_H2C_OPCODE_CONFIG_IPADDR | ((u64)adapter->portnum << 16);
	req.req_hdr = cpu_to_le64(word);

	req.words[0] = cpu_to_le64(cmd);
	ipa = (struct qlcnic_ipaddr *)&req.words[1];
	ipa->ipv4 = ip;

	rv = qlcnic_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
	if (rv != 0)
		dev_err(&adapter->netdev->dev,
				"could not notify %s IP 0x%x reuqest\n",
				(cmd == QLCNIC_IP_UP) ? "Add" : "Remove", ip);

	return rv;
}

int qlcnic_linkevent_request(struct qlcnic_adapter *adapter, int enable)
{
	struct qlcnic_nic_req req;
	u64 word;
	int rv;

	memset(&req, 0, sizeof(struct qlcnic_nic_req));
	req.qhdr = cpu_to_le64(QLCNIC_HOST_REQUEST << 23);

	word = QLCNIC_H2C_OPCODE_GET_LINKEVENT | ((u64)adapter->portnum << 16);
	req.req_hdr = cpu_to_le64(word);
	req.words[0] = cpu_to_le64(enable | (enable << 8));

	rv = qlcnic_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
	if (rv != 0)
		dev_err(&adapter->netdev->dev,
				"could not configure link notification\n");

	return rv;
}

int qlcnic_send_lro_cleanup(struct qlcnic_adapter *adapter)
{
	struct qlcnic_nic_req req;
	u64 word;
	int rv;

	if (!test_bit(__QLCNIC_FW_ATTACHED, &adapter->state))
		return 0;

	memset(&req, 0, sizeof(struct qlcnic_nic_req));
	req.qhdr = cpu_to_le64(QLCNIC_HOST_REQUEST << 23);

	word = QLCNIC_H2C_OPCODE_LRO_REQUEST |
		((u64)adapter->portnum << 16) |
		((u64)QLCNIC_LRO_REQUEST_CLEANUP << 56) ;

	req.req_hdr = cpu_to_le64(word);

	rv = qlcnic_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
	if (rv != 0)
		dev_err(&adapter->netdev->dev,
				 "could not cleanup lro flows\n");

	return rv;
}

/*
 * qlcnic_change_mtu - Change the Maximum Transfer Unit
 * @returns 0 on success, negative on failure
 */

int qlcnic_change_mtu(struct net_device *netdev, int mtu)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);
	int rc = 0;

	if (mtu < P3P_MIN_MTU || mtu > P3P_MAX_MTU) {
		dev_err(&adapter->netdev->dev, "%d bytes < mtu < %d bytes"
			" not supported\n", P3P_MAX_MTU, P3P_MIN_MTU);
		return -EINVAL;
	}

	rc = qlcnic_fw_cmd_set_mtu(adapter, mtu);

	if (!rc)
		netdev->mtu = mtu;

	return rc;
}


netdev_features_t qlcnic_fix_features(struct net_device *netdev,
	netdev_features_t features)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);

	if ((adapter->flags & QLCNIC_ESWITCH_ENABLED)) {
		netdev_features_t changed = features ^ netdev->features;
		features ^= changed & (NETIF_F_ALL_CSUM | NETIF_F_RXCSUM);
	}

	if (!(features & NETIF_F_RXCSUM))
		features &= ~NETIF_F_LRO;

	return features;
}


int qlcnic_set_features(struct net_device *netdev, netdev_features_t features)
{
	struct qlcnic_adapter *adapter = netdev_priv(netdev);
	netdev_features_t changed = netdev->features ^ features;
	int hw_lro = (features & NETIF_F_LRO) ? QLCNIC_LRO_ENABLED : 0;

	if (!(changed & NETIF_F_LRO))
		return 0;

	netdev->features = features ^ NETIF_F_LRO;

	if (qlcnic_config_hw_lro(adapter, hw_lro))
		return -EIO;

	if ((hw_lro == 0) && qlcnic_send_lro_cleanup(adapter))
		return -EIO;

	return 0;
}

/*
 * Changes the CRB window to the specified window.
 */
 /* Returns < 0 if off is not valid,
 *	 1 if window access is needed. 'off' is set to offset from
 *	   CRB space in 128M pci map
 *	 0 if no window access is needed. 'off' is set to 2M addr
 * In: 'off' is offset from base in 128M pci map
 */
static int
qlcnic_pci_get_crb_addr_2M(struct qlcnic_adapter *adapter,
		ulong off, void __iomem **addr)
{
	const struct crb_128M_2M_sub_block_map *m;

	if ((off >= QLCNIC_CRB_MAX) || (off < QLCNIC_PCI_CRBSPACE))
		return -EINVAL;

	off -= QLCNIC_PCI_CRBSPACE;

	/*
	 * Try direct map
	 */
	m = &crb_128M_2M_map[CRB_BLK(off)].sub_block[CRB_SUBBLK(off)];

	if (m->valid && (m->start_128M <= off) && (m->end_128M > off)) {
		*addr = adapter->ahw->pci_base0 + m->start_2M +
			(off - m->start_128M);
		return 0;
	}

	/*
	 * Not in direct map, use crb window
	 */
	*addr = adapter->ahw->pci_base0 + CRB_INDIRECT_2M + (off & MASK(16));
	return 1;
}

/*
 * In: 'off' is offset from CRB space in 128M pci map
 * Out: 'off' is 2M pci map addr
 * side effect: lock crb window
 */
static int
qlcnic_pci_set_crbwindow_2M(struct qlcnic_adapter *adapter, ulong off)
{
	u32 window;
	void __iomem *addr = adapter->ahw->pci_base0 + CRB_WINDOW_2M;

	off -= QLCNIC_PCI_CRBSPACE;

	window = CRB_HI(off);
	if (window == 0) {
		dev_err(&adapter->pdev->dev, "Invalid offset 0x%lx\n", off);
		return -EIO;
	}

	writel(window, addr);
	if (readl(addr) != window) {
		if (printk_ratelimit())
			dev_warn(&adapter->pdev->dev,
				"failed to set CRB window to %d off 0x%lx\n",
				window, off);
		return -EIO;
	}
	return 0;
}

int
qlcnic_hw_write_wx_2M(struct qlcnic_adapter *adapter, ulong off, u32 data)
{
	unsigned long flags;
	int rv;
	void __iomem *addr = NULL;

	rv = qlcnic_pci_get_crb_addr_2M(adapter, off, &addr);

	if (rv == 0) {
		writel(data, addr);
		return 0;
	}

	if (rv > 0) {
		/* indirect access */
		write_lock_irqsave(&adapter->ahw->crb_lock, flags);
		crb_win_lock(adapter);
		rv = qlcnic_pci_set_crbwindow_2M(adapter, off);
		if (!rv)
			writel(data, addr);
		crb_win_unlock(adapter);
		write_unlock_irqrestore(&adapter->ahw->crb_lock, flags);
		return rv;
	}

	dev_err(&adapter->pdev->dev,
			"%s: invalid offset: 0x%016lx\n", __func__, off);
	dump_stack();
	return -EIO;
}

u32
qlcnic_hw_read_wx_2M(struct qlcnic_adapter *adapter, ulong off)
{
	unsigned long flags;
	int rv;
	u32 data = -1;
	void __iomem *addr = NULL;

	rv = qlcnic_pci_get_crb_addr_2M(adapter, off, &addr);

	if (rv == 0)
		return readl(addr);

	if (rv > 0) {
		/* indirect access */
		write_lock_irqsave(&adapter->ahw->crb_lock, flags);
		crb_win_lock(adapter);
		if (!qlcnic_pci_set_crbwindow_2M(adapter, off))
			data = readl(addr);
		crb_win_unlock(adapter);
		write_unlock_irqrestore(&adapter->ahw->crb_lock, flags);
		return data;
	}

	dev_err(&adapter->pdev->dev,
			"%s: invalid offset: 0x%016lx\n", __func__, off);
	dump_stack();
	return -1;
}


void __iomem *
qlcnic_get_ioaddr(struct qlcnic_adapter *adapter, u32 offset)
{
	void __iomem *addr = NULL;

	WARN_ON(qlcnic_pci_get_crb_addr_2M(adapter, offset, &addr));

	return addr;
}


static int
qlcnic_pci_set_window_2M(struct qlcnic_adapter *adapter,
		u64 addr, u32 *start)
{
	u32 window;

	window = OCM_WIN_P3P(addr);

	writel(window, adapter->ahw->ocm_win_crb);
	/* read back to flush */
	readl(adapter->ahw->ocm_win_crb);

	*start = QLCNIC_PCI_OCM0_2M + GET_MEM_OFFS_2M(addr);
	return 0;
}

static int
qlcnic_pci_mem_access_direct(struct qlcnic_adapter *adapter, u64 off,
		u64 *data, int op)
{
	void __iomem *addr;
	int ret;
	u32 start;

	mutex_lock(&adapter->ahw->mem_lock);

	ret = qlcnic_pci_set_window_2M(adapter, off, &start);
	if (ret != 0)
		goto unlock;

	addr = adapter->ahw->pci_base0 + start;

	if (op == 0)	/* read */
		*data = readq(addr);
	else		/* write */
		writeq(*data, addr);

unlock:
	mutex_unlock(&adapter->ahw->mem_lock);

	return ret;
}

void
qlcnic_pci_camqm_read_2M(struct qlcnic_adapter *adapter, u64 off, u64 *data)
{
	void __iomem *addr = adapter->ahw->pci_base0 +
		QLCNIC_PCI_CAMQM_2M_BASE + (off - QLCNIC_PCI_CAMQM);

	mutex_lock(&adapter->ahw->mem_lock);
	*data = readq(addr);
	mutex_unlock(&adapter->ahw->mem_lock);
}

void
qlcnic_pci_camqm_write_2M(struct qlcnic_adapter *adapter, u64 off, u64 data)
{
	void __iomem *addr = adapter->ahw->pci_base0 +
		QLCNIC_PCI_CAMQM_2M_BASE + (off - QLCNIC_PCI_CAMQM);

	mutex_lock(&adapter->ahw->mem_lock);
	writeq(data, addr);
	mutex_unlock(&adapter->ahw->mem_lock);
}

#define MAX_CTL_CHECK   1000

int
qlcnic_pci_mem_write_2M(struct qlcnic_adapter *adapter,
		u64 off, u64 data)
{
	int i, j, ret;
	u32 temp, off8;
	void __iomem *mem_crb;

	/* Only 64-bit aligned access */
	if (off & 7)
		return -EIO;

	/* P3 onward, test agent base for MIU and SIU is same */
	if (ADDR_IN_RANGE(off, QLCNIC_ADDR_QDR_NET,
				QLCNIC_ADDR_QDR_NET_MAX)) {
		mem_crb = qlcnic_get_ioaddr(adapter,
				QLCNIC_CRB_QDR_NET+MIU_TEST_AGT_BASE);
		goto correct;
	}

	if (ADDR_IN_RANGE(off, QLCNIC_ADDR_DDR_NET, QLCNIC_ADDR_DDR_NET_MAX)) {
		mem_crb = qlcnic_get_ioaddr(adapter,
				QLCNIC_CRB_DDR_NET+MIU_TEST_AGT_BASE);
		goto correct;
	}

	if (ADDR_IN_RANGE(off, QLCNIC_ADDR_OCM0, QLCNIC_ADDR_OCM0_MAX))
		return qlcnic_pci_mem_access_direct(adapter, off, &data, 1);

	return -EIO;

correct:
	off8 = off & ~0xf;

	mutex_lock(&adapter->ahw->mem_lock);

	writel(off8, (mem_crb + MIU_TEST_AGT_ADDR_LO));
	writel(0, (mem_crb + MIU_TEST_AGT_ADDR_HI));

	i = 0;
	writel(TA_CTL_ENABLE, (mem_crb + TEST_AGT_CTRL));
	writel((TA_CTL_START | TA_CTL_ENABLE),
			(mem_crb + TEST_AGT_CTRL));

	for (j = 0; j < MAX_CTL_CHECK; j++) {
		temp = readl(mem_crb + TEST_AGT_CTRL);
		if ((temp & TA_CTL_BUSY) == 0)
			break;
	}

	if (j >= MAX_CTL_CHECK) {
		ret = -EIO;
		goto done;
	}

	i = (off & 0xf) ? 0 : 2;
	writel(readl(mem_crb + MIU_TEST_AGT_RDDATA(i)),
			mem_crb + MIU_TEST_AGT_WRDATA(i));
	writel(readl(mem_crb + MIU_TEST_AGT_RDDATA(i+1)),
			mem_crb + MIU_TEST_AGT_WRDATA(i+1));
	i = (off & 0xf) ? 2 : 0;

	writel(data & 0xffffffff,
			mem_crb + MIU_TEST_AGT_WRDATA(i));
	writel((data >> 32) & 0xffffffff,
			mem_crb + MIU_TEST_AGT_WRDATA(i+1));

	writel((TA_CTL_ENABLE | TA_CTL_WRITE), (mem_crb + TEST_AGT_CTRL));
	writel((TA_CTL_START | TA_CTL_ENABLE | TA_CTL_WRITE),
			(mem_crb + TEST_AGT_CTRL));

	for (j = 0; j < MAX_CTL_CHECK; j++) {
		temp = readl(mem_crb + TEST_AGT_CTRL);
		if ((temp & TA_CTL_BUSY) == 0)
			break;
	}

	if (j >= MAX_CTL_CHECK) {
		if (printk_ratelimit())
			dev_err(&adapter->pdev->dev,
					"failed to write through agent\n");
		ret = -EIO;
	} else
		ret = 0;

done:
	mutex_unlock(&adapter->ahw->mem_lock);

	return ret;
}

int
qlcnic_pci_mem_read_2M(struct qlcnic_adapter *adapter,
		u64 off, u64 *data)
{
	int j, ret;
	u32 temp, off8;
	u64 val;
	void __iomem *mem_crb;

	/* Only 64-bit aligned access */
	if (off & 7)
		return -EIO;

	/* P3 onward, test agent base for MIU and SIU is same */
	if (ADDR_IN_RANGE(off, QLCNIC_ADDR_QDR_NET,
				QLCNIC_ADDR_QDR_NET_MAX)) {
		mem_crb = qlcnic_get_ioaddr(adapter,
				QLCNIC_CRB_QDR_NET+MIU_TEST_AGT_BASE);
		goto correct;
	}

	if (ADDR_IN_RANGE(off, QLCNIC_ADDR_DDR_NET, QLCNIC_ADDR_DDR_NET_MAX)) {
		mem_crb = qlcnic_get_ioaddr(adapter,
				QLCNIC_CRB_DDR_NET+MIU_TEST_AGT_BASE);
		goto correct;
	}

	if (ADDR_IN_RANGE(off, QLCNIC_ADDR_OCM0, QLCNIC_ADDR_OCM0_MAX)) {
		return qlcnic_pci_mem_access_direct(adapter,
				off, data, 0);
	}

	return -EIO;

correct:
	off8 = off & ~0xf;

	mutex_lock(&adapter->ahw->mem_lock);

	writel(off8, (mem_crb + MIU_TEST_AGT_ADDR_LO));
	writel(0, (mem_crb + MIU_TEST_AGT_ADDR_HI));
	writel(TA_CTL_ENABLE, (mem_crb + TEST_AGT_CTRL));
	writel((TA_CTL_START | TA_CTL_ENABLE), (mem_crb + TEST_AGT_CTRL));

	for (j = 0; j < MAX_CTL_CHECK; j++) {
		temp = readl(mem_crb + TEST_AGT_CTRL);
		if ((temp & TA_CTL_BUSY) == 0)
			break;
	}

	if (j >= MAX_CTL_CHECK) {
		if (printk_ratelimit())
			dev_err(&adapter->pdev->dev,
					"failed to read through agent\n");
		ret = -EIO;
	} else {
		off8 = MIU_TEST_AGT_RDDATA_LO;
		if (off & 0xf)
			off8 = MIU_TEST_AGT_RDDATA_UPPER_LO;

		temp = readl(mem_crb + off8 + 4);
		val = (u64)temp << 32;
		val |= readl(mem_crb + off8);
		*data = val;
		ret = 0;
	}

	mutex_unlock(&adapter->ahw->mem_lock);

	return ret;
}

int qlcnic_get_board_info(struct qlcnic_adapter *adapter)
{
	int offset, board_type, magic;
	struct pci_dev *pdev = adapter->pdev;

	offset = QLCNIC_FW_MAGIC_OFFSET;
	if (qlcnic_rom_fast_read(adapter, offset, &magic))
		return -EIO;

	if (magic != QLCNIC_BDINFO_MAGIC) {
		dev_err(&pdev->dev, "invalid board config, magic=%08x\n",
			magic);
		return -EIO;
	}

	offset = QLCNIC_BRDTYPE_OFFSET;
	if (qlcnic_rom_fast_read(adapter, offset, &board_type))
		return -EIO;

	adapter->ahw->board_type = board_type;

	if (board_type == QLCNIC_BRDTYPE_P3P_4_GB_MM) {
		u32 gpio = QLCRD32(adapter, QLCNIC_ROMUSB_GLB_PAD_GPIO_I);
		if ((gpio & 0x8000) == 0)
			board_type = QLCNIC_BRDTYPE_P3P_10G_TP;
	}

	switch (board_type) {
	case QLCNIC_BRDTYPE_P3P_HMEZ:
	case QLCNIC_BRDTYPE_P3P_XG_LOM:
	case QLCNIC_BRDTYPE_P3P_10G_CX4:
	case QLCNIC_BRDTYPE_P3P_10G_CX4_LP:
	case QLCNIC_BRDTYPE_P3P_IMEZ:
	case QLCNIC_BRDTYPE_P3P_10G_SFP_PLUS:
	case QLCNIC_BRDTYPE_P3P_10G_SFP_CT:
	case QLCNIC_BRDTYPE_P3P_10G_SFP_QT:
	case QLCNIC_BRDTYPE_P3P_10G_XFP:
	case QLCNIC_BRDTYPE_P3P_10000_BASE_T:
		adapter->ahw->port_type = QLCNIC_XGBE;
		break;
	case QLCNIC_BRDTYPE_P3P_REF_QG:
	case QLCNIC_BRDTYPE_P3P_4_GB:
	case QLCNIC_BRDTYPE_P3P_4_GB_MM:
		adapter->ahw->port_type = QLCNIC_GBE;
		break;
	case QLCNIC_BRDTYPE_P3P_10G_TP:
		adapter->ahw->port_type = (adapter->portnum < 2) ?
			QLCNIC_XGBE : QLCNIC_GBE;
		break;
	default:
		dev_err(&pdev->dev, "unknown board type %x\n", board_type);
		adapter->ahw->port_type = QLCNIC_XGBE;
		break;
	}

	return 0;
}

int
qlcnic_wol_supported(struct qlcnic_adapter *adapter)
{
	u32 wol_cfg;

	wol_cfg = QLCRD32(adapter, QLCNIC_WOL_CONFIG_NV);
	if (wol_cfg & (1UL << adapter->portnum)) {
		wol_cfg = QLCRD32(adapter, QLCNIC_WOL_CONFIG);
		if (wol_cfg & (1 << adapter->portnum))
			return 1;
	}

	return 0;
}

int qlcnic_config_led(struct qlcnic_adapter *adapter, u32 state, u32 rate)
{
	struct qlcnic_nic_req   req;
	int rv;
	u64 word;

	memset(&req, 0, sizeof(struct qlcnic_nic_req));
	req.qhdr = cpu_to_le64(QLCNIC_HOST_REQUEST << 23);

	word = QLCNIC_H2C_OPCODE_CONFIG_LED | ((u64)adapter->portnum << 16);
	req.req_hdr = cpu_to_le64(word);

	req.words[0] = cpu_to_le64((u64)rate << 32);
	req.words[1] = cpu_to_le64(state);

	rv = qlcnic_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
	if (rv)
		dev_err(&adapter->pdev->dev, "LED configuration failed.\n");

	return rv;
}

/* FW dump related functions */
static u32
qlcnic_dump_crb(struct qlcnic_adapter *adapter, struct qlcnic_dump_entry *entry,
		u32 *buffer)
{
	int i;
	u32 addr, data;
	struct __crb *crb = &entry->region.crb;
	void __iomem *base = adapter->ahw->pci_base0;

	addr = crb->addr;

	for (i = 0; i < crb->no_ops; i++) {
		qlcnic_read_dump_reg(addr, base, &data);
		*buffer++ = cpu_to_le32(addr);
		*buffer++ = cpu_to_le32(data);
		addr += crb->stride;
	}
	return crb->no_ops * 2 * sizeof(u32);
}

static u32
qlcnic_dump_ctrl(struct qlcnic_adapter *adapter,
	struct qlcnic_dump_entry *entry, u32 *buffer)
{
	int i, k, timeout = 0;
	void __iomem *base = adapter->ahw->pci_base0;
	u32 addr, data;
	u8 opcode, no_ops;
	struct __ctrl *ctr = &entry->region.ctrl;
	struct qlcnic_dump_template_hdr *t_hdr = adapter->ahw->fw_dump.tmpl_hdr;

	addr = ctr->addr;
	no_ops = ctr->no_ops;

	for (i = 0; i < no_ops; i++) {
		k = 0;
		opcode = 0;
		for (k = 0; k < 8; k++) {
			if (!(ctr->opcode & (1 << k)))
				continue;
			switch (1 << k) {
			case QLCNIC_DUMP_WCRB:
				qlcnic_write_dump_reg(addr, base, ctr->val1);
				break;
			case QLCNIC_DUMP_RWCRB:
				qlcnic_read_dump_reg(addr, base, &data);
				qlcnic_write_dump_reg(addr, base, data);
				break;
			case QLCNIC_DUMP_ANDCRB:
				qlcnic_read_dump_reg(addr, base, &data);
				qlcnic_write_dump_reg(addr, base,
						      data & ctr->val2);
				break;
			case QLCNIC_DUMP_ORCRB:
				qlcnic_read_dump_reg(addr, base, &data);
				qlcnic_write_dump_reg(addr, base,
						      data | ctr->val3);
				break;
			case QLCNIC_DUMP_POLLCRB:
				while (timeout <= ctr->timeout) {
					qlcnic_read_dump_reg(addr, base, &data);
					if ((data & ctr->val2) == ctr->val1)
						break;
					msleep(1);
					timeout++;
				}
				if (timeout > ctr->timeout) {
					dev_info(&adapter->pdev->dev,
					"Timed out, aborting poll CRB\n");
					return -EINVAL;
				}
				break;
			case QLCNIC_DUMP_RD_SAVE:
				if (ctr->index_a)
					addr = t_hdr->saved_state[ctr->index_a];
				qlcnic_read_dump_reg(addr, base, &data);
				t_hdr->saved_state[ctr->index_v] = data;
				break;
			case QLCNIC_DUMP_WRT_SAVED:
				if (ctr->index_v)
					data = t_hdr->saved_state[ctr->index_v];
				else
					data = ctr->val1;
				if (ctr->index_a)
					addr = t_hdr->saved_state[ctr->index_a];
				qlcnic_write_dump_reg(addr, base, data);
				break;
			case QLCNIC_DUMP_MOD_SAVE_ST:
				data = t_hdr->saved_state[ctr->index_v];
				data <<= ctr->shl_val;
				data >>= ctr->shr_val;
				if (ctr->val2)
					data &= ctr->val2;
				data |= ctr->val3;
				data += ctr->val1;
				t_hdr->saved_state[ctr->index_v] = data;
				break;
			default:
				dev_info(&adapter->pdev->dev,
					"Unknown opcode\n");
				break;
			}
		}
		addr += ctr->stride;
	}
	return 0;
}

static u32
qlcnic_dump_mux(struct qlcnic_adapter *adapter, struct qlcnic_dump_entry *entry,
	u32 *buffer)
{
	int loop;
	u32 val, data = 0;
	struct __mux *mux = &entry->region.mux;
	void __iomem *base = adapter->ahw->pci_base0;

	val = mux->val;
	for (loop = 0; loop < mux->no_ops; loop++) {
		qlcnic_write_dump_reg(mux->addr, base, val);
		qlcnic_read_dump_reg(mux->read_addr, base, &data);
		*buffer++ = cpu_to_le32(val);
		*buffer++ = cpu_to_le32(data);
		val += mux->val_stride;
	}
	return 2 * mux->no_ops * sizeof(u32);
}

static u32
qlcnic_dump_que(struct qlcnic_adapter *adapter, struct qlcnic_dump_entry *entry,
	u32 *buffer)
{
	int i, loop;
	u32 cnt, addr, data, que_id = 0;
	void __iomem *base = adapter->ahw->pci_base0;
	struct __queue *que = &entry->region.que;

	addr = que->read_addr;
	cnt = que->read_addr_cnt;

	for (loop = 0; loop < que->no_ops; loop++) {
		qlcnic_write_dump_reg(que->sel_addr, base, que_id);
		addr = que->read_addr;
		for (i = 0; i < cnt; i++) {
			qlcnic_read_dump_reg(addr, base, &data);
			*buffer++ = cpu_to_le32(data);
			addr += que->read_addr_stride;
		}
		que_id += que->stride;
	}
	return que->no_ops * cnt * sizeof(u32);
}

static u32
qlcnic_dump_ocm(struct qlcnic_adapter *adapter, struct qlcnic_dump_entry *entry,
	u32 *buffer)
{
	int i;
	u32 data;
	void __iomem *addr;
	struct __ocm *ocm = &entry->region.ocm;

	addr = adapter->ahw->pci_base0 + ocm->read_addr;
	for (i = 0; i < ocm->no_ops; i++) {
		data = readl(addr);
		*buffer++ = cpu_to_le32(data);
		addr += ocm->read_addr_stride;
	}
	return ocm->no_ops * sizeof(u32);
}

static u32
qlcnic_read_rom(struct qlcnic_adapter *adapter, struct qlcnic_dump_entry *entry,
	u32 *buffer)
{
	int i, count = 0;
	u32 fl_addr, size, val, lck_val, addr;
	struct __mem *rom = &entry->region.mem;
	void __iomem *base = adapter->ahw->pci_base0;

	fl_addr = rom->addr;
	size = rom->size/4;
lock_try:
	lck_val = readl(base + QLCNIC_FLASH_SEM2_LK);
	if (!lck_val && count < MAX_CTL_CHECK) {
		msleep(10);
		count++;
		goto lock_try;
	}
	writel(adapter->ahw->pci_func, (base + QLCNIC_FLASH_LOCK_ID));
	for (i = 0; i < size; i++) {
		addr = fl_addr & 0xFFFF0000;
		qlcnic_write_dump_reg(FLASH_ROM_WINDOW, base, addr);
		addr = LSW(fl_addr) + FLASH_ROM_DATA;
		qlcnic_read_dump_reg(addr, base, &val);
		fl_addr += 4;
		*buffer++ = cpu_to_le32(val);
	}
	readl(base + QLCNIC_FLASH_SEM2_ULK);
	return rom->size;
}

static u32
qlcnic_dump_l1_cache(struct qlcnic_adapter *adapter,
	struct qlcnic_dump_entry *entry, u32 *buffer)
{
	int i;
	u32 cnt, val, data, addr;
	void __iomem *base = adapter->ahw->pci_base0;
	struct __cache *l1 = &entry->region.cache;

	val = l1->init_tag_val;

	for (i = 0; i < l1->no_ops; i++) {
		qlcnic_write_dump_reg(l1->addr, base, val);
		qlcnic_write_dump_reg(l1->ctrl_addr, base, LSW(l1->ctrl_val));
		addr = l1->read_addr;
		cnt = l1->read_addr_num;
		while (cnt) {
			qlcnic_read_dump_reg(addr, base, &data);
			*buffer++ = cpu_to_le32(data);
			addr += l1->read_addr_stride;
			cnt--;
		}
		val += l1->stride;
	}
	return l1->no_ops * l1->read_addr_num * sizeof(u32);
}

static u32
qlcnic_dump_l2_cache(struct qlcnic_adapter *adapter,
	struct qlcnic_dump_entry *entry, u32 *buffer)
{
	int i;
	u32 cnt, val, data, addr;
	u8 poll_mask, poll_to, time_out = 0;
	void __iomem *base = adapter->ahw->pci_base0;
	struct __cache *l2 = &entry->region.cache;

	val = l2->init_tag_val;
	poll_mask = LSB(MSW(l2->ctrl_val));
	poll_to = MSB(MSW(l2->ctrl_val));

	for (i = 0; i < l2->no_ops; i++) {
		qlcnic_write_dump_reg(l2->addr, base, val);
		if (LSW(l2->ctrl_val))
			qlcnic_write_dump_reg(l2->ctrl_addr, base,
					      LSW(l2->ctrl_val));
		if (!poll_mask)
			goto skip_poll;
		do {
			qlcnic_read_dump_reg(l2->ctrl_addr, base, &data);
			if (!(data & poll_mask))
				break;
			msleep(1);
			time_out++;
		} while (time_out <= poll_to);

		if (time_out > poll_to) {
			dev_err(&adapter->pdev->dev,
				"Timeout exceeded in %s, aborting dump\n",
				__func__);
			return -EINVAL;
		}
skip_poll:
		addr = l2->read_addr;
		cnt = l2->read_addr_num;
		while (cnt) {
			qlcnic_read_dump_reg(addr, base, &data);
			*buffer++ = cpu_to_le32(data);
			addr += l2->read_addr_stride;
			cnt--;
		}
		val += l2->stride;
	}
	return l2->no_ops * l2->read_addr_num * sizeof(u32);
}

static u32
qlcnic_read_memory(struct qlcnic_adapter *adapter,
	struct qlcnic_dump_entry *entry, u32 *buffer)
{
	u32 addr, data, test, ret = 0;
	int i, reg_read;
	struct __mem *mem = &entry->region.mem;
	void __iomem *base = adapter->ahw->pci_base0;

	reg_read = mem->size;
	addr = mem->addr;
	/* check for data size of multiple of 16 and 16 byte alignment */
	if ((addr & 0xf) || (reg_read%16)) {
		dev_info(&adapter->pdev->dev,
			"Unaligned memory addr:0x%x size:0x%x\n",
			addr, reg_read);
		return -EINVAL;
	}

	mutex_lock(&adapter->ahw->mem_lock);

	while (reg_read != 0) {
		qlcnic_write_dump_reg(MIU_TEST_ADDR_LO, base, addr);
		qlcnic_write_dump_reg(MIU_TEST_ADDR_HI, base, 0);
		qlcnic_write_dump_reg(MIU_TEST_CTR, base,
				      TA_CTL_ENABLE | TA_CTL_START);

		for (i = 0; i < MAX_CTL_CHECK; i++) {
			qlcnic_read_dump_reg(MIU_TEST_CTR, base, &test);
			if (!(test & TA_CTL_BUSY))
				break;
		}
		if (i == MAX_CTL_CHECK) {
			if (printk_ratelimit()) {
				dev_err(&adapter->pdev->dev,
					"failed to read through agent\n");
				ret = -EINVAL;
				goto out;
			}
		}
		for (i = 0; i < 4; i++) {
			qlcnic_read_dump_reg(MIU_TEST_READ_DATA[i], base,
					     &data);
			*buffer++ = cpu_to_le32(data);
		}
		addr += 16;
		reg_read -= 16;
		ret += 16;
	}
out:
	mutex_unlock(&adapter->ahw->mem_lock);
	return mem->size;
}

static u32
qlcnic_dump_nop(struct qlcnic_adapter *adapter,
	struct qlcnic_dump_entry *entry, u32 *buffer)
{
	entry->hdr.flags |= QLCNIC_DUMP_SKIP;
	return 0;
}

static const struct qlcnic_dump_operations fw_dump_ops[] = {
	{ QLCNIC_DUMP_NOP, qlcnic_dump_nop },
	{ QLCNIC_DUMP_READ_CRB, qlcnic_dump_crb },
	{ QLCNIC_DUMP_READ_MUX, qlcnic_dump_mux },
	{ QLCNIC_DUMP_QUEUE, qlcnic_dump_que },
	{ QLCNIC_DUMP_BRD_CONFIG, qlcnic_read_rom },
	{ QLCNIC_DUMP_READ_OCM, qlcnic_dump_ocm },
	{ QLCNIC_DUMP_PEG_REG, qlcnic_dump_ctrl },
	{ QLCNIC_DUMP_L1_DTAG, qlcnic_dump_l1_cache },
	{ QLCNIC_DUMP_L1_ITAG, qlcnic_dump_l1_cache },
	{ QLCNIC_DUMP_L1_DATA, qlcnic_dump_l1_cache },
	{ QLCNIC_DUMP_L1_INST, qlcnic_dump_l1_cache },
	{ QLCNIC_DUMP_L2_DTAG, qlcnic_dump_l2_cache },
	{ QLCNIC_DUMP_L2_ITAG, qlcnic_dump_l2_cache },
	{ QLCNIC_DUMP_L2_DATA, qlcnic_dump_l2_cache },
	{ QLCNIC_DUMP_L2_INST, qlcnic_dump_l2_cache },
	{ QLCNIC_DUMP_READ_ROM, qlcnic_read_rom },
	{ QLCNIC_DUMP_READ_MEM, qlcnic_read_memory },
	{ QLCNIC_DUMP_READ_CTRL, qlcnic_dump_ctrl },
	{ QLCNIC_DUMP_TLHDR, qlcnic_dump_nop },
	{ QLCNIC_DUMP_RDEND, qlcnic_dump_nop },
};

/* Walk the template and collect dump for each entry in the dump template */
static int
qlcnic_valid_dump_entry(struct device *dev, struct qlcnic_dump_entry *entry,
	u32 size)
{
	int ret = 1;
	if (size != entry->hdr.cap_size) {
		dev_info(dev,
		"Invalidate dump, Type:%d\tMask:%d\tSize:%dCap_size:%d\n",
		entry->hdr.type, entry->hdr.mask, size, entry->hdr.cap_size);
		dev_info(dev, "Aborting further dump capture\n");
		ret = 0;
	}
	return ret;
}

int qlcnic_dump_fw(struct qlcnic_adapter *adapter)
{
	u32 *buffer;
	char mesg[64];
	char *msg[] = {mesg, NULL};
	int i, k, ops_cnt, ops_index, dump_size = 0;
	u32 entry_offset, dump, no_entries, buf_offset = 0;
	struct qlcnic_dump_entry *entry;
	struct qlcnic_fw_dump *fw_dump = &adapter->ahw->fw_dump;
	struct qlcnic_dump_template_hdr *tmpl_hdr = fw_dump->tmpl_hdr;

	if (fw_dump->clr) {
		dev_info(&adapter->pdev->dev,
			"Previous dump not cleared, not capturing dump\n");
		return -EIO;
	}
	/* Calculate the size for dump data area only */
	for (i = 2, k = 1; (i & QLCNIC_DUMP_MASK_MAX); i <<= 1, k++)
		if (i & tmpl_hdr->drv_cap_mask)
			dump_size += tmpl_hdr->cap_sizes[k];
	if (!dump_size)
		return -EIO;

	fw_dump->data = vzalloc(dump_size);
	if (!fw_dump->data) {
		dev_info(&adapter->pdev->dev,
			"Unable to allocate (%d KB) for fw dump\n",
			dump_size/1024);
		return -ENOMEM;
	}
	buffer = fw_dump->data;
	fw_dump->size = dump_size;
	no_entries = tmpl_hdr->num_entries;
	ops_cnt = ARRAY_SIZE(fw_dump_ops);
	entry_offset = tmpl_hdr->offset;
	tmpl_hdr->sys_info[0] = QLCNIC_DRIVER_VERSION;
	tmpl_hdr->sys_info[1] = adapter->fw_version;

	for (i = 0; i < no_entries; i++) {
		entry = (void *)tmpl_hdr + entry_offset;
		if (!(entry->hdr.mask & tmpl_hdr->drv_cap_mask)) {
			entry->hdr.flags |= QLCNIC_DUMP_SKIP;
			entry_offset += entry->hdr.offset;
			continue;
		}
		/* Find the handler for this entry */
		ops_index = 0;
		while (ops_index < ops_cnt) {
			if (entry->hdr.type == fw_dump_ops[ops_index].opcode)
				break;
			ops_index++;
		}
		if (ops_index == ops_cnt) {
			dev_info(&adapter->pdev->dev,
				"Invalid entry type %d, exiting dump\n",
				entry->hdr.type);
			goto error;
		}
		/* Collect dump for this entry */
		dump = fw_dump_ops[ops_index].handler(adapter, entry, buffer);
		if (dump && !qlcnic_valid_dump_entry(&adapter->pdev->dev, entry,
			dump))
			entry->hdr.flags |= QLCNIC_DUMP_SKIP;
		buf_offset += entry->hdr.cap_size;
		entry_offset += entry->hdr.offset;
		buffer = fw_dump->data + buf_offset;
	}
	if (dump_size != buf_offset) {
		dev_info(&adapter->pdev->dev,
			"Captured(%d) and expected size(%d) do not match\n",
			buf_offset, dump_size);
		goto error;
	} else {
		fw_dump->clr = 1;
		snprintf(mesg, sizeof(mesg), "FW_DUMP=%s",
			adapter->netdev->name);
		dev_info(&adapter->pdev->dev, "Dump data, %d bytes captured\n",
			fw_dump->size);
		/* Send a udev event to notify availability of FW dump */
		kobject_uevent_env(&adapter->pdev->dev.kobj, KOBJ_CHANGE, msg);
		return 0;
	}
error:
	vfree(fw_dump->data);
	return -EINVAL;
}