vxge-main.c 128.5 KB
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/******************************************************************************
* This software may be used and distributed according to the terms of
* the GNU General Public License (GPL), incorporated herein by reference.
* Drivers based on or derived from this code fall under the GPL and must
* retain the authorship, copyright and license notice.  This file is not
* a complete program and may only be used when the entire operating
* system is licensed under the GPL.
* See the file COPYING in this distribution for more information.
*
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* vxge-main.c: Driver for Exar Corp's X3100 Series 10GbE PCIe I/O
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*              Virtualized Server Adapter.
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* Copyright(c) 2002-2010 Exar Corp.
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*
* The module loadable parameters that are supported by the driver and a brief
* explanation of all the variables:
* vlan_tag_strip:
*	Strip VLAN Tag enable/disable. Instructs the device to remove
*	the VLAN tag from all received tagged frames that are not
*	replicated at the internal L2 switch.
*		0 - Do not strip the VLAN tag.
*		1 - Strip the VLAN tag.
*
* addr_learn_en:
*	Enable learning the mac address of the guest OS interface in
*	a virtualization environment.
*		0 - DISABLE
*		1 - ENABLE
*
* max_config_port:
*	Maximum number of port to be supported.
*		MIN -1 and MAX - 2
*
* max_config_vpath:
*	This configures the maximum no of VPATH configures for each
* 	device function.
*		MIN - 1 and MAX - 17
*
* max_config_dev:
*	This configures maximum no of Device function to be enabled.
*		MIN - 1 and MAX - 17
*
******************************************************************************/

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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

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#include <linux/bitops.h>
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#include <linux/if_vlan.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include <linux/tcp.h>
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#include <net/ip.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
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#include <linux/firmware.h>
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#include <linux/net_tstamp.h>
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#include <linux/prefetch.h>
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#include <linux/module.h>
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#include "vxge-main.h"
#include "vxge-reg.h"

MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("Neterion's X3100 Series 10GbE PCIe I/O"
	"Virtualized Server Adapter");

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static DEFINE_PCI_DEVICE_TABLE(vxge_id_table) = {
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	{PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_WIN, PCI_ANY_ID,
	PCI_ANY_ID},
	{PCI_VENDOR_ID_S2IO, PCI_DEVICE_ID_TITAN_UNI, PCI_ANY_ID,
	PCI_ANY_ID},
	{0}
};

MODULE_DEVICE_TABLE(pci, vxge_id_table);

VXGE_MODULE_PARAM_INT(vlan_tag_strip, VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE);
VXGE_MODULE_PARAM_INT(addr_learn_en, VXGE_HW_MAC_ADDR_LEARN_DEFAULT);
VXGE_MODULE_PARAM_INT(max_config_port, VXGE_MAX_CONFIG_PORT);
VXGE_MODULE_PARAM_INT(max_config_vpath, VXGE_USE_DEFAULT);
VXGE_MODULE_PARAM_INT(max_mac_vpath, VXGE_MAX_MAC_ADDR_COUNT);
VXGE_MODULE_PARAM_INT(max_config_dev, VXGE_MAX_CONFIG_DEV);

static u16 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS] =
		{0, 1, 3, 3, 7, 7, 7, 7, 15, 15, 15, 15, 15, 15, 15, 15, 31};
static unsigned int bw_percentage[VXGE_HW_MAX_VIRTUAL_PATHS] =
	{[0 ...(VXGE_HW_MAX_VIRTUAL_PATHS - 1)] = 0xFF};
module_param_array(bw_percentage, uint, NULL, 0);

static struct vxge_drv_config *driver_config;

static inline int is_vxge_card_up(struct vxgedev *vdev)
{
	return test_bit(__VXGE_STATE_CARD_UP, &vdev->state);
}

static inline void VXGE_COMPLETE_VPATH_TX(struct vxge_fifo *fifo)
{
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	struct sk_buff **skb_ptr = NULL;
	struct sk_buff **temp;
#define NR_SKB_COMPLETED 128
	struct sk_buff *completed[NR_SKB_COMPLETED];
	int more;
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	do {
		more = 0;
		skb_ptr = completed;

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		if (__netif_tx_trylock(fifo->txq)) {
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			vxge_hw_vpath_poll_tx(fifo->handle, &skb_ptr,
						NR_SKB_COMPLETED, &more);
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			__netif_tx_unlock(fifo->txq);
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		}
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		/* free SKBs */
		for (temp = completed; temp != skb_ptr; temp++)
			dev_kfree_skb_irq(*temp);
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	} while (more);
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}

static inline void VXGE_COMPLETE_ALL_TX(struct vxgedev *vdev)
{
	int i;

	/* Complete all transmits */
	for (i = 0; i < vdev->no_of_vpath; i++)
		VXGE_COMPLETE_VPATH_TX(&vdev->vpaths[i].fifo);
}

static inline void VXGE_COMPLETE_ALL_RX(struct vxgedev *vdev)
{
	int i;
	struct vxge_ring *ring;

	/* Complete all receives*/
	for (i = 0; i < vdev->no_of_vpath; i++) {
		ring = &vdev->vpaths[i].ring;
		vxge_hw_vpath_poll_rx(ring->handle);
	}
}

/*
 * vxge_callback_link_up
 *
 * This function is called during interrupt context to notify link up state
 * change.
 */
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static void vxge_callback_link_up(struct __vxge_hw_device *hldev)
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{
	struct net_device *dev = hldev->ndev;
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	struct vxgedev *vdev = netdev_priv(dev);
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	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
		vdev->ndev->name, __func__, __LINE__);
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	netdev_notice(vdev->ndev, "Link Up\n");
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	vdev->stats.link_up++;

	netif_carrier_on(vdev->ndev);
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	netif_tx_wake_all_queues(vdev->ndev);
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	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
}

/*
 * vxge_callback_link_down
 *
 * This function is called during interrupt context to notify link down state
 * change.
 */
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static void vxge_callback_link_down(struct __vxge_hw_device *hldev)
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{
	struct net_device *dev = hldev->ndev;
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	struct vxgedev *vdev = netdev_priv(dev);
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	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d", vdev->ndev->name, __func__, __LINE__);
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	netdev_notice(vdev->ndev, "Link Down\n");
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	vdev->stats.link_down++;
	netif_carrier_off(vdev->ndev);
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	netif_tx_stop_all_queues(vdev->ndev);
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	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d Exiting...", vdev->ndev->name, __func__, __LINE__);
}

/*
 * vxge_rx_alloc
 *
 * Allocate SKB.
 */
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static struct sk_buff *
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vxge_rx_alloc(void *dtrh, struct vxge_ring *ring, const int skb_size)
{
	struct net_device    *dev;
	struct sk_buff       *skb;
	struct vxge_rx_priv *rx_priv;

	dev = ring->ndev;
	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
		ring->ndev->name, __func__, __LINE__);

	rx_priv = vxge_hw_ring_rxd_private_get(dtrh);

	/* try to allocate skb first. this one may fail */
	skb = netdev_alloc_skb(dev, skb_size +
	VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
	if (skb == NULL) {
		vxge_debug_mem(VXGE_ERR,
			"%s: out of memory to allocate SKB", dev->name);
		ring->stats.skb_alloc_fail++;
		return NULL;
	}

	vxge_debug_mem(VXGE_TRACE,
		"%s: %s:%d  Skb : 0x%p", ring->ndev->name,
		__func__, __LINE__, skb);

	skb_reserve(skb, VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);

	rx_priv->skb = skb;
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	rx_priv->skb_data = NULL;
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	rx_priv->data_size = skb_size;
	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);

	return skb;
}

/*
 * vxge_rx_map
 */
static int vxge_rx_map(void *dtrh, struct vxge_ring *ring)
{
	struct vxge_rx_priv *rx_priv;
	dma_addr_t dma_addr;

	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
		ring->ndev->name, __func__, __LINE__);
	rx_priv = vxge_hw_ring_rxd_private_get(dtrh);

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	rx_priv->skb_data = rx_priv->skb->data;
	dma_addr = pci_map_single(ring->pdev, rx_priv->skb_data,
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				rx_priv->data_size, PCI_DMA_FROMDEVICE);

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	if (unlikely(pci_dma_mapping_error(ring->pdev, dma_addr))) {
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		ring->stats.pci_map_fail++;
		return -EIO;
	}
	vxge_debug_mem(VXGE_TRACE,
		"%s: %s:%d  1 buffer mode dma_addr = 0x%llx",
		ring->ndev->name, __func__, __LINE__,
		(unsigned long long)dma_addr);
	vxge_hw_ring_rxd_1b_set(dtrh, dma_addr, rx_priv->data_size);

	rx_priv->data_dma = dma_addr;
	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);

	return 0;
}

/*
 * vxge_rx_initial_replenish
 * Allocation of RxD as an initial replenish procedure.
 */
static enum vxge_hw_status
vxge_rx_initial_replenish(void *dtrh, void *userdata)
{
	struct vxge_ring *ring = (struct vxge_ring *)userdata;
	struct vxge_rx_priv *rx_priv;

	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
		ring->ndev->name, __func__, __LINE__);
	if (vxge_rx_alloc(dtrh, ring,
			  VXGE_LL_MAX_FRAME_SIZE(ring->ndev)) == NULL)
		return VXGE_HW_FAIL;

	if (vxge_rx_map(dtrh, ring)) {
		rx_priv = vxge_hw_ring_rxd_private_get(dtrh);
		dev_kfree_skb(rx_priv->skb);

		return VXGE_HW_FAIL;
	}
	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);

	return VXGE_HW_OK;
}

static inline void
vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
		 int pkt_length, struct vxge_hw_ring_rxd_info *ext_info)
{

	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
			ring->ndev->name, __func__, __LINE__);
	skb_record_rx_queue(skb, ring->driver_id);
	skb->protocol = eth_type_trans(skb, ring->ndev);

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	u64_stats_update_begin(&ring->stats.syncp);
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	ring->stats.rx_frms++;
	ring->stats.rx_bytes += pkt_length;

	if (skb->pkt_type == PACKET_MULTICAST)
		ring->stats.rx_mcast++;
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	u64_stats_update_end(&ring->stats.syncp);
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	vxge_debug_rx(VXGE_TRACE,
		"%s: %s:%d  skb protocol = %d",
		ring->ndev->name, __func__, __LINE__, skb->protocol);

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	if (ext_info->vlan &&
	    ring->vlan_tag_strip == VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE)
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		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ext_info->vlan);
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	napi_gro_receive(ring->napi_p, skb);
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	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d Exiting...", ring->ndev->name, __func__, __LINE__);
}

static inline void vxge_re_pre_post(void *dtr, struct vxge_ring *ring,
				    struct vxge_rx_priv *rx_priv)
{
	pci_dma_sync_single_for_device(ring->pdev,
		rx_priv->data_dma, rx_priv->data_size, PCI_DMA_FROMDEVICE);

	vxge_hw_ring_rxd_1b_set(dtr, rx_priv->data_dma, rx_priv->data_size);
	vxge_hw_ring_rxd_pre_post(ring->handle, dtr);
}

static inline void vxge_post(int *dtr_cnt, void **first_dtr,
			     void *post_dtr, struct __vxge_hw_ring *ringh)
{
	int dtr_count = *dtr_cnt;
	if ((*dtr_cnt % VXGE_HW_RXSYNC_FREQ_CNT) == 0) {
		if (*first_dtr)
			vxge_hw_ring_rxd_post_post_wmb(ringh, *first_dtr);
		*first_dtr = post_dtr;
	} else
		vxge_hw_ring_rxd_post_post(ringh, post_dtr);
	dtr_count++;
	*dtr_cnt = dtr_count;
}

/*
 * vxge_rx_1b_compl
 *
 * If the interrupt is because of a received frame or if the receive ring
 * contains fresh as yet un-processed frames, this function is called.
 */
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static enum vxge_hw_status
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vxge_rx_1b_compl(struct __vxge_hw_ring *ringh, void *dtr,
		 u8 t_code, void *userdata)
{
	struct vxge_ring *ring = (struct vxge_ring *)userdata;
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	struct net_device *dev = ring->ndev;
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	unsigned int dma_sizes;
	void *first_dtr = NULL;
	int dtr_cnt = 0;
	int data_size;
	dma_addr_t data_dma;
	int pkt_length;
	struct sk_buff *skb;
	struct vxge_rx_priv *rx_priv;
	struct vxge_hw_ring_rxd_info ext_info;
	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
		ring->ndev->name, __func__, __LINE__);

	do {
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		prefetch((char *)dtr + L1_CACHE_BYTES);
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		rx_priv = vxge_hw_ring_rxd_private_get(dtr);
		skb = rx_priv->skb;
		data_size = rx_priv->data_size;
		data_dma = rx_priv->data_dma;
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		prefetch(rx_priv->skb_data);
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		vxge_debug_rx(VXGE_TRACE,
			"%s: %s:%d  skb = 0x%p",
			ring->ndev->name, __func__, __LINE__, skb);

		vxge_hw_ring_rxd_1b_get(ringh, dtr, &dma_sizes);
		pkt_length = dma_sizes;

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		pkt_length -= ETH_FCS_LEN;

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		vxge_debug_rx(VXGE_TRACE,
			"%s: %s:%d  Packet Length = %d",
			ring->ndev->name, __func__, __LINE__, pkt_length);

		vxge_hw_ring_rxd_1b_info_get(ringh, dtr, &ext_info);

		/* check skb validity */
		vxge_assert(skb);

		prefetch((char *)skb + L1_CACHE_BYTES);
		if (unlikely(t_code)) {
			if (vxge_hw_ring_handle_tcode(ringh, dtr, t_code) !=
				VXGE_HW_OK) {

				ring->stats.rx_errors++;
				vxge_debug_rx(VXGE_TRACE,
					"%s: %s :%d Rx T_code is %d",
					ring->ndev->name, __func__,
					__LINE__, t_code);

				/* If the t_code is not supported and if the
				 * t_code is other than 0x5 (unparseable packet
				 * such as unknown UPV6 header), Drop it !!!
				 */
				vxge_re_pre_post(dtr, ring, rx_priv);

				vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
				ring->stats.rx_dropped++;
				continue;
			}
		}

		if (pkt_length > VXGE_LL_RX_COPY_THRESHOLD) {
			if (vxge_rx_alloc(dtr, ring, data_size) != NULL) {
				if (!vxge_rx_map(dtr, ring)) {
					skb_put(skb, pkt_length);

					pci_unmap_single(ring->pdev, data_dma,
						data_size, PCI_DMA_FROMDEVICE);

					vxge_hw_ring_rxd_pre_post(ringh, dtr);
					vxge_post(&dtr_cnt, &first_dtr, dtr,
						ringh);
				} else {
					dev_kfree_skb(rx_priv->skb);
					rx_priv->skb = skb;
					rx_priv->data_size = data_size;
					vxge_re_pre_post(dtr, ring, rx_priv);

					vxge_post(&dtr_cnt, &first_dtr, dtr,
						ringh);
					ring->stats.rx_dropped++;
					break;
				}
			} else {
				vxge_re_pre_post(dtr, ring, rx_priv);

				vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
				ring->stats.rx_dropped++;
				break;
			}
		} else {
			struct sk_buff *skb_up;

			skb_up = netdev_alloc_skb(dev, pkt_length +
				VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);
			if (skb_up != NULL) {
				skb_reserve(skb_up,
				    VXGE_HW_HEADER_ETHERNET_II_802_3_ALIGN);

				pci_dma_sync_single_for_cpu(ring->pdev,
					data_dma, data_size,
					PCI_DMA_FROMDEVICE);

				vxge_debug_mem(VXGE_TRACE,
					"%s: %s:%d  skb_up = %p",
					ring->ndev->name, __func__,
					__LINE__, skb);
				memcpy(skb_up->data, skb->data, pkt_length);

				vxge_re_pre_post(dtr, ring, rx_priv);

				vxge_post(&dtr_cnt, &first_dtr, dtr,
					ringh);
				/* will netif_rx small SKB instead */
				skb = skb_up;
				skb_put(skb, pkt_length);
			} else {
				vxge_re_pre_post(dtr, ring, rx_priv);

				vxge_post(&dtr_cnt, &first_dtr, dtr, ringh);
				vxge_debug_rx(VXGE_ERR,
					"%s: vxge_rx_1b_compl: out of "
					"memory", dev->name);
				ring->stats.skb_alloc_fail++;
				break;
			}
		}

		if ((ext_info.proto & VXGE_HW_FRAME_PROTO_TCP_OR_UDP) &&
		    !(ext_info.proto & VXGE_HW_FRAME_PROTO_IP_FRAG) &&
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		    (dev->features & NETIF_F_RXCSUM) && /* Offload Rx side CSUM */
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		    ext_info.l3_cksum == VXGE_HW_L3_CKSUM_OK &&
		    ext_info.l4_cksum == VXGE_HW_L4_CKSUM_OK)
			skb->ip_summed = CHECKSUM_UNNECESSARY;
		else
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			skb_checksum_none_assert(skb);
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		if (ring->rx_hwts) {
			struct skb_shared_hwtstamps *skb_hwts;
			u32 ns = *(u32 *)(skb->head + pkt_length);

			skb_hwts = skb_hwtstamps(skb);
			skb_hwts->hwtstamp = ns_to_ktime(ns);
			skb_hwts->syststamp.tv64 = 0;
		}

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		/* rth_hash_type and rth_it_hit are non-zero regardless of
		 * whether rss is enabled.  Only the rth_value is zero/non-zero
		 * if rss is disabled/enabled, so key off of that.
		 */
		if (ext_info.rth_value)
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			skb_set_hash(skb, ext_info.rth_value,
				     PKT_HASH_TYPE_L3);
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		vxge_rx_complete(ring, skb, ext_info.vlan,
			pkt_length, &ext_info);

		ring->budget--;
		ring->pkts_processed++;
		if (!ring->budget)
			break;

	} while (vxge_hw_ring_rxd_next_completed(ringh, &dtr,
		&t_code) == VXGE_HW_OK);

	if (first_dtr)
		vxge_hw_ring_rxd_post_post_wmb(ringh, first_dtr);

	vxge_debug_entryexit(VXGE_TRACE,
				"%s:%d  Exiting...",
				__func__, __LINE__);
	return VXGE_HW_OK;
}

/*
 * vxge_xmit_compl
 *
 * If an interrupt was raised to indicate DMA complete of the Tx packet,
 * this function is called. It identifies the last TxD whose buffer was
 * freed and frees all skbs whose data have already DMA'ed into the NICs
 * internal memory.
 */
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static enum vxge_hw_status
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vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
		enum vxge_hw_fifo_tcode t_code, void *userdata,
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		struct sk_buff ***skb_ptr, int nr_skb, int *more)
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{
	struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
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	struct sk_buff *skb, **done_skb = *skb_ptr;
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	int pkt_cnt = 0;

	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d Entered....", __func__, __LINE__);

	do {
		int frg_cnt;
		skb_frag_t *frag;
		int i = 0, j;
		struct vxge_tx_priv *txd_priv =
			vxge_hw_fifo_txdl_private_get(dtr);

		skb = txd_priv->skb;
		frg_cnt = skb_shinfo(skb)->nr_frags;
		frag = &skb_shinfo(skb)->frags[0];

		vxge_debug_tx(VXGE_TRACE,
				"%s: %s:%d fifo_hw = %p dtr = %p "
				"tcode = 0x%x", fifo->ndev->name, __func__,
				__LINE__, fifo_hw, dtr, t_code);
		/* check skb validity */
		vxge_assert(skb);
		vxge_debug_tx(VXGE_TRACE,
			"%s: %s:%d skb = %p itxd_priv = %p frg_cnt = %d",
			fifo->ndev->name, __func__, __LINE__,
			skb, txd_priv, frg_cnt);
		if (unlikely(t_code)) {
			fifo->stats.tx_errors++;
			vxge_debug_tx(VXGE_ERR,
				"%s: tx: dtr %p completed due to "
				"error t_code %01x", fifo->ndev->name,
				dtr, t_code);
			vxge_hw_fifo_handle_tcode(fifo_hw, dtr, t_code);
		}

		/*  for unfragmented skb */
		pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
				skb_headlen(skb), PCI_DMA_TODEVICE);

		for (j = 0; j < frg_cnt; j++) {
			pci_unmap_page(fifo->pdev,
					txd_priv->dma_buffers[i++],
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Eric Dumazet 已提交
590
					skb_frag_size(frag), PCI_DMA_TODEVICE);
591 592 593 594 595 596
			frag += 1;
		}

		vxge_hw_fifo_txdl_free(fifo_hw, dtr);

		/* Updating the statistics block */
597
		u64_stats_update_begin(&fifo->stats.syncp);
598 599
		fifo->stats.tx_frms++;
		fifo->stats.tx_bytes += skb->len;
600
		u64_stats_update_end(&fifo->stats.syncp);
601

602 603 604 605 606 607
		*done_skb++ = skb;

		if (--nr_skb <= 0) {
			*more = 1;
			break;
		}
608 609 610 611 612 613 614 615

		pkt_cnt++;
		if (pkt_cnt > fifo->indicate_max_pkts)
			break;

	} while (vxge_hw_fifo_txdl_next_completed(fifo_hw,
				&dtr, &t_code) == VXGE_HW_OK);

616
	*skb_ptr = done_skb;
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	if (netif_tx_queue_stopped(fifo->txq))
		netif_tx_wake_queue(fifo->txq);
619 620 621 622 623 624 625

	vxge_debug_entryexit(VXGE_TRACE,
				"%s: %s:%d  Exiting...",
				fifo->ndev->name, __func__, __LINE__);
	return VXGE_HW_OK;
}

626
/* select a vpath to transmit the packet */
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static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb)
628 629 630 631 632 633 634 635
{
	u16 queue_len, counter = 0;
	if (skb->protocol == htons(ETH_P_IP)) {
		struct iphdr *ip;
		struct tcphdr *th;

		ip = ip_hdr(skb);

636
		if (!ip_is_fragment(ip)) {
637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661
			th = (struct tcphdr *)(((unsigned char *)ip) +
					ip->ihl*4);

			queue_len = vdev->no_of_vpath;
			counter = (ntohs(th->source) +
				ntohs(th->dest)) &
				vdev->vpath_selector[queue_len - 1];
			if (counter >= queue_len)
				counter = queue_len - 1;
		}
	}
	return counter;
}

static enum vxge_hw_status vxge_search_mac_addr_in_list(
	struct vxge_vpath *vpath, u64 del_mac)
{
	struct list_head *entry, *next;
	list_for_each_safe(entry, next, &vpath->mac_addr_list) {
		if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac)
			return TRUE;
	}
	return FALSE;
}

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662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686
static int vxge_mac_list_add(struct vxge_vpath *vpath, struct macInfo *mac)
{
	struct vxge_mac_addrs *new_mac_entry;
	u8 *mac_address = NULL;

	if (vpath->mac_addr_cnt >= VXGE_MAX_LEARN_MAC_ADDR_CNT)
		return TRUE;

	new_mac_entry = kzalloc(sizeof(struct vxge_mac_addrs), GFP_ATOMIC);
	if (!new_mac_entry) {
		vxge_debug_mem(VXGE_ERR,
			"%s: memory allocation failed",
			VXGE_DRIVER_NAME);
		return FALSE;
	}

	list_add(&new_mac_entry->item, &vpath->mac_addr_list);

	/* Copy the new mac address to the list */
	mac_address = (u8 *)&new_mac_entry->macaddr;
	memcpy(mac_address, mac->macaddr, ETH_ALEN);

	new_mac_entry->state = mac->state;
	vpath->mac_addr_cnt++;

687
	if (is_multicast_ether_addr(mac->macaddr))
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		vpath->mcast_addr_cnt++;

	return TRUE;
}

/* Add a mac address to DA table */
static enum vxge_hw_status
vxge_add_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
{
	enum vxge_hw_status status = VXGE_HW_OK;
	struct vxge_vpath *vpath;
	enum vxge_hw_vpath_mac_addr_add_mode duplicate_mode;

701
	if (is_multicast_ether_addr(mac->macaddr))
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		duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE;
	else
		duplicate_mode = VXGE_HW_VPATH_MAC_ADDR_REPLACE_DUPLICATE;

	vpath = &vdev->vpaths[mac->vpath_no];
	status = vxge_hw_vpath_mac_addr_add(vpath->handle, mac->macaddr,
						mac->macmask, duplicate_mode);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"DA config add entry failed for vpath:%d",
			vpath->device_id);
	} else
		if (FALSE == vxge_mac_list_add(vpath, mac))
			status = -EPERM;

	return status;
}

720 721 722 723 724 725 726 727 728 729
static int vxge_learn_mac(struct vxgedev *vdev, u8 *mac_header)
{
	struct macInfo mac_info;
	u8 *mac_address = NULL;
	u64 mac_addr = 0, vpath_vector = 0;
	int vpath_idx = 0;
	enum vxge_hw_status status = VXGE_HW_OK;
	struct vxge_vpath *vpath = NULL;
	struct __vxge_hw_device *hldev;

730
	hldev = pci_get_drvdata(vdev->pdev);
731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800

	mac_address = (u8 *)&mac_addr;
	memcpy(mac_address, mac_header, ETH_ALEN);

	/* Is this mac address already in the list? */
	for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
		vpath = &vdev->vpaths[vpath_idx];
		if (vxge_search_mac_addr_in_list(vpath, mac_addr))
			return vpath_idx;
	}

	memset(&mac_info, 0, sizeof(struct macInfo));
	memcpy(mac_info.macaddr, mac_header, ETH_ALEN);

	/* Any vpath has room to add mac address to its da table? */
	for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
		vpath = &vdev->vpaths[vpath_idx];
		if (vpath->mac_addr_cnt < vpath->max_mac_addr_cnt) {
			/* Add this mac address to this vpath */
			mac_info.vpath_no = vpath_idx;
			mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
			status = vxge_add_mac_addr(vdev, &mac_info);
			if (status != VXGE_HW_OK)
				return -EPERM;
			return vpath_idx;
		}
	}

	mac_info.state = VXGE_LL_MAC_ADDR_IN_LIST;
	vpath_idx = 0;
	mac_info.vpath_no = vpath_idx;
	/* Is the first vpath already selected as catch-basin ? */
	vpath = &vdev->vpaths[vpath_idx];
	if (vpath->mac_addr_cnt > vpath->max_mac_addr_cnt) {
		/* Add this mac address to this vpath */
		if (FALSE == vxge_mac_list_add(vpath, &mac_info))
			return -EPERM;
		return vpath_idx;
	}

	/* Select first vpath as catch-basin */
	vpath_vector = vxge_mBIT(vpath->device_id);
	status = vxge_hw_mgmt_reg_write(vpath->vdev->devh,
				vxge_hw_mgmt_reg_type_mrpcim,
				0,
				(ulong)offsetof(
					struct vxge_hw_mrpcim_reg,
					rts_mgr_cbasin_cfg),
				vpath_vector);
	if (status != VXGE_HW_OK) {
		vxge_debug_tx(VXGE_ERR,
			"%s: Unable to set the vpath-%d in catch-basin mode",
			VXGE_DRIVER_NAME, vpath->device_id);
		return -EPERM;
	}

	if (FALSE == vxge_mac_list_add(vpath, &mac_info))
		return -EPERM;

	return vpath_idx;
}

/**
 * vxge_xmit
 * @skb : the socket buffer containing the Tx data.
 * @dev : device pointer.
 *
 * This function is the Tx entry point of the driver. Neterion NIC supports
 * certain protocol assist features on Tx side, namely  CSO, S/G, LSO.
*/
801
static netdev_tx_t
802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828
vxge_xmit(struct sk_buff *skb, struct net_device *dev)
{
	struct vxge_fifo *fifo = NULL;
	void *dtr_priv;
	void *dtr = NULL;
	struct vxgedev *vdev = NULL;
	enum vxge_hw_status status;
	int frg_cnt, first_frg_len;
	skb_frag_t *frag;
	int i = 0, j = 0, avail;
	u64 dma_pointer;
	struct vxge_tx_priv *txdl_priv = NULL;
	struct __vxge_hw_fifo *fifo_hw;
	int offload_type;
	int vpath_no = 0;

	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
			dev->name, __func__, __LINE__);

	/* A buffer with no data will be dropped */
	if (unlikely(skb->len <= 0)) {
		vxge_debug_tx(VXGE_ERR,
			"%s: Buffer has no data..", dev->name);
		dev_kfree_skb(skb);
		return NETDEV_TX_OK;
	}

829
	vdev = netdev_priv(dev);
830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851

	if (unlikely(!is_vxge_card_up(vdev))) {
		vxge_debug_tx(VXGE_ERR,
			"%s: vdev not initialized", dev->name);
		dev_kfree_skb(skb);
		return NETDEV_TX_OK;
	}

	if (vdev->config.addr_learn_en) {
		vpath_no = vxge_learn_mac(vdev, skb->data + ETH_ALEN);
		if (vpath_no == -EPERM) {
			vxge_debug_tx(VXGE_ERR,
				"%s: Failed to store the mac address",
				dev->name);
			dev_kfree_skb(skb);
			return NETDEV_TX_OK;
		}
	}

	if (vdev->config.tx_steering_type == TX_MULTIQ_STEERING)
		vpath_no = skb_get_queue_mapping(skb);
	else if (vdev->config.tx_steering_type == TX_PORT_STEERING)
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		vpath_no = vxge_get_vpath_no(vdev, skb);
853 854 855 856 857 858 859 860 861

	vxge_debug_tx(VXGE_TRACE, "%s: vpath_no= %d", dev->name, vpath_no);

	if (vpath_no >= vdev->no_of_vpath)
		vpath_no = 0;

	fifo = &vdev->vpaths[vpath_no].fifo;
	fifo_hw = fifo->handle;

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Jon Mason 已提交
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	if (netif_tx_queue_stopped(fifo->txq))
J
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		return NETDEV_TX_BUSY;

865 866 867 868 869
	avail = vxge_hw_fifo_free_txdl_count_get(fifo_hw);
	if (avail == 0) {
		vxge_debug_tx(VXGE_ERR,
			"%s: No free TXDs available", dev->name);
		fifo->stats.txd_not_free++;
J
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870
		goto _exit0;
871 872
	}

873 874 875 876
	/* Last TXD?  Stop tx queue to avoid dropping packets.  TX
	 * completion will resume the queue.
	 */
	if (avail == 1)
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877
		netif_tx_stop_queue(fifo->txq);
878

879 880 881 882 883
	status = vxge_hw_fifo_txdl_reserve(fifo_hw, &dtr, &dtr_priv);
	if (unlikely(status != VXGE_HW_OK)) {
		vxge_debug_tx(VXGE_ERR,
		   "%s: Out of descriptors .", dev->name);
		fifo->stats.txd_out_of_desc++;
J
Jon Mason 已提交
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		goto _exit0;
885 886 887 888 889 890 891
	}

	vxge_debug_tx(VXGE_TRACE,
		"%s: %s:%d fifo_hw = %p dtr = %p dtr_priv = %p",
		dev->name, __func__, __LINE__,
		fifo_hw, dtr, dtr_priv);

892
	if (vlan_tx_tag_present(skb)) {
893 894 895 896 897 898 899 900 901 902 903 904
		u16 vlan_tag = vlan_tx_tag_get(skb);
		vxge_hw_fifo_txdl_vlan_set(dtr, vlan_tag);
	}

	first_frg_len = skb_headlen(skb);

	dma_pointer = pci_map_single(fifo->pdev, skb->data, first_frg_len,
				PCI_DMA_TODEVICE);

	if (unlikely(pci_dma_mapping_error(fifo->pdev, dma_pointer))) {
		vxge_hw_fifo_txdl_free(fifo_hw, dtr);
		fifo->stats.pci_map_fail++;
J
Jon Mason 已提交
905
		goto _exit0;
906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924
	}

	txdl_priv = vxge_hw_fifo_txdl_private_get(dtr);
	txdl_priv->skb = skb;
	txdl_priv->dma_buffers[j] = dma_pointer;

	frg_cnt = skb_shinfo(skb)->nr_frags;
	vxge_debug_tx(VXGE_TRACE,
			"%s: %s:%d skb = %p txdl_priv = %p "
			"frag_cnt = %d dma_pointer = 0x%llx", dev->name,
			__func__, __LINE__, skb, txdl_priv,
			frg_cnt, (unsigned long long)dma_pointer);

	vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
		first_frg_len);

	frag = &skb_shinfo(skb)->frags[0];
	for (i = 0; i < frg_cnt; i++) {
		/* ignore 0 length fragment */
E
Eric Dumazet 已提交
925
		if (!skb_frag_size(frag))
926 927
			continue;

928
		dma_pointer = (u64)skb_frag_dma_map(&fifo->pdev->dev, frag,
E
Eric Dumazet 已提交
929
						    0, skb_frag_size(frag),
930
						    DMA_TO_DEVICE);
931

932
		if (unlikely(dma_mapping_error(&fifo->pdev->dev, dma_pointer)))
J
Jon Mason 已提交
933
			goto _exit2;
934 935 936 937 938 939 940
		vxge_debug_tx(VXGE_TRACE,
			"%s: %s:%d frag = %d dma_pointer = 0x%llx",
				dev->name, __func__, __LINE__, i,
				(unsigned long long)dma_pointer);

		txdl_priv->dma_buffers[j] = dma_pointer;
		vxge_hw_fifo_txdl_buffer_set(fifo_hw, dtr, j++, dma_pointer,
E
Eric Dumazet 已提交
941
					skb_frag_size(frag));
942 943 944 945 946 947 948 949
		frag += 1;
	}

	offload_type = vxge_offload_type(skb);

	if (offload_type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6)) {
		int mss = vxge_tcp_mss(skb);
		if (mss) {
J
Jon Mason 已提交
950
			vxge_debug_tx(VXGE_TRACE, "%s: %s:%d mss = %d",
951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970
				dev->name, __func__, __LINE__, mss);
			vxge_hw_fifo_txdl_mss_set(dtr, mss);
		} else {
			vxge_assert(skb->len <=
				dev->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE);
			vxge_assert(0);
			goto _exit1;
		}
	}

	if (skb->ip_summed == CHECKSUM_PARTIAL)
		vxge_hw_fifo_txdl_cksum_set_bits(dtr,
					VXGE_HW_FIFO_TXD_TX_CKO_IPV4_EN |
					VXGE_HW_FIFO_TXD_TX_CKO_TCP_EN |
					VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);

	vxge_hw_fifo_txdl_post(fifo_hw, dtr);

	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
		dev->name, __func__, __LINE__);
971
	return NETDEV_TX_OK;
972

J
Jon Mason 已提交
973
_exit2:
974 975 976 977 978 979 980 981 982 983
	vxge_debug_tx(VXGE_TRACE, "%s: pci_map_page failed", dev->name);
_exit1:
	j = 0;
	frag = &skb_shinfo(skb)->frags[0];

	pci_unmap_single(fifo->pdev, txdl_priv->dma_buffers[j++],
			skb_headlen(skb), PCI_DMA_TODEVICE);

	for (; j < i; j++) {
		pci_unmap_page(fifo->pdev, txdl_priv->dma_buffers[j],
E
Eric Dumazet 已提交
984
			skb_frag_size(frag), PCI_DMA_TODEVICE);
985 986 987 988
		frag += 1;
	}

	vxge_hw_fifo_txdl_free(fifo_hw, dtr);
J
Jon Mason 已提交
989 990
_exit0:
	netif_tx_stop_queue(fifo->txq);
991 992
	dev_kfree_skb(skb);

993
	return NETDEV_TX_OK;
994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017
}

/*
 * vxge_rx_term
 *
 * Function will be called by hw function to abort all outstanding receive
 * descriptors.
 */
static void
vxge_rx_term(void *dtrh, enum vxge_hw_rxd_state state, void *userdata)
{
	struct vxge_ring *ring = (struct vxge_ring *)userdata;
	struct vxge_rx_priv *rx_priv =
		vxge_hw_ring_rxd_private_get(dtrh);

	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
			ring->ndev->name, __func__, __LINE__);
	if (state != VXGE_HW_RXD_STATE_POSTED)
		return;

	pci_unmap_single(ring->pdev, rx_priv->data_dma,
		rx_priv->data_size, PCI_DMA_FROMDEVICE);

	dev_kfree_skb(rx_priv->skb);
B
Benjamin LaHaise 已提交
1018
	rx_priv->skb_data = NULL;
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

	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d  Exiting...",
		ring->ndev->name, __func__, __LINE__);
}

/*
 * vxge_tx_term
 *
 * Function will be called to abort all outstanding tx descriptors
 */
static void
vxge_tx_term(void *dtrh, enum vxge_hw_txdl_state state, void *userdata)
{
	struct vxge_fifo *fifo = (struct vxge_fifo *)userdata;
	skb_frag_t *frag;
	int i = 0, j, frg_cnt;
	struct vxge_tx_priv *txd_priv = vxge_hw_fifo_txdl_private_get(dtrh);
	struct sk_buff *skb = txd_priv->skb;

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);

	if (state != VXGE_HW_TXDL_STATE_POSTED)
		return;

	/* check skb validity */
	vxge_assert(skb);
	frg_cnt = skb_shinfo(skb)->nr_frags;
	frag = &skb_shinfo(skb)->frags[0];

	/*  for unfragmented skb */
	pci_unmap_single(fifo->pdev, txd_priv->dma_buffers[i++],
		skb_headlen(skb), PCI_DMA_TODEVICE);

	for (j = 0; j < frg_cnt; j++) {
		pci_unmap_page(fifo->pdev, txd_priv->dma_buffers[i++],
E
Eric Dumazet 已提交
1055
			       skb_frag_size(frag), PCI_DMA_TODEVICE);
1056 1057 1058 1059 1060 1061 1062 1063 1064
		frag += 1;
	}

	dev_kfree_skb(skb);

	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d  Exiting...", __func__, __LINE__);
}

J
Jon Mason 已提交
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static int vxge_mac_list_del(struct vxge_vpath *vpath, struct macInfo *mac)
{
	struct list_head *entry, *next;
	u64 del_mac = 0;
	u8 *mac_address = (u8 *) (&del_mac);

	/* Copy the mac address to delete from the list */
	memcpy(mac_address, mac->macaddr, ETH_ALEN);

	list_for_each_safe(entry, next, &vpath->mac_addr_list) {
		if (((struct vxge_mac_addrs *)entry)->macaddr == del_mac) {
			list_del(entry);
			kfree((struct vxge_mac_addrs *)entry);
			vpath->mac_addr_cnt--;

1080
			if (is_multicast_ether_addr(mac->macaddr))
J
Jon Mason 已提交
1081 1082 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
				vpath->mcast_addr_cnt--;
			return TRUE;
		}
	}

	return FALSE;
}

/* delete a mac address from DA table */
static enum vxge_hw_status
vxge_del_mac_addr(struct vxgedev *vdev, struct macInfo *mac)
{
	enum vxge_hw_status status = VXGE_HW_OK;
	struct vxge_vpath *vpath;

	vpath = &vdev->vpaths[mac->vpath_no];
	status = vxge_hw_vpath_mac_addr_delete(vpath->handle, mac->macaddr,
						mac->macmask);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"DA config delete entry failed for vpath:%d",
			vpath->device_id);
	} else
		vxge_mac_list_del(vpath, mac);
	return status;
}

1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120
/**
 * vxge_set_multicast
 * @dev: pointer to the device structure
 *
 * Entry point for multicast address enable/disable
 * This function is a driver entry point which gets called by the kernel
 * whenever multicast addresses must be enabled/disabled. This also gets
 * called to set/reset promiscuous mode. Depending on the deivce flag, we
 * determine, if multicast address must be enabled or if promiscuous mode
 * is to be disabled etc.
 */
static void vxge_set_multicast(struct net_device *dev)
{
1121
	struct netdev_hw_addr *ha;
1122 1123
	struct vxgedev *vdev;
	int i, mcast_cnt = 0;
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1124 1125
	struct __vxge_hw_device *hldev;
	struct vxge_vpath *vpath;
1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136
	enum vxge_hw_status status = VXGE_HW_OK;
	struct macInfo mac_info;
	int vpath_idx = 0;
	struct vxge_mac_addrs *mac_entry;
	struct list_head *list_head;
	struct list_head *entry, *next;
	u8 *mac_address = NULL;

	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d", __func__, __LINE__);

1137
	vdev = netdev_priv(dev);
1138
	hldev = vdev->devh;
1139 1140 1141 1142 1143 1144

	if (unlikely(!is_vxge_card_up(vdev)))
		return;

	if ((dev->flags & IFF_ALLMULTI) && (!vdev->all_multi_flg)) {
		for (i = 0; i < vdev->no_of_vpath; i++) {
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			vpath = &vdev->vpaths[i];
			vxge_assert(vpath->is_open);
			status = vxge_hw_vpath_mcast_enable(vpath->handle);
			if (status != VXGE_HW_OK)
				vxge_debug_init(VXGE_ERR, "failed to enable "
						"multicast, status %d", status);
1151 1152
			vdev->all_multi_flg = 1;
		}
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	} else if (!(dev->flags & IFF_ALLMULTI) && (vdev->all_multi_flg)) {
1154
		for (i = 0; i < vdev->no_of_vpath; i++) {
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			vpath = &vdev->vpaths[i];
			vxge_assert(vpath->is_open);
			status = vxge_hw_vpath_mcast_disable(vpath->handle);
			if (status != VXGE_HW_OK)
				vxge_debug_init(VXGE_ERR, "failed to disable "
						"multicast, status %d", status);
			vdev->all_multi_flg = 0;
1162 1163 1164 1165 1166
		}
	}


	if (!vdev->config.addr_learn_en) {
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		for (i = 0; i < vdev->no_of_vpath; i++) {
			vpath = &vdev->vpaths[i];
			vxge_assert(vpath->is_open);

			if (dev->flags & IFF_PROMISC)
1172
				status = vxge_hw_vpath_promisc_enable(
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1173 1174
					vpath->handle);
			else
1175
				status = vxge_hw_vpath_promisc_disable(
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					vpath->handle);
			if (status != VXGE_HW_OK)
				vxge_debug_init(VXGE_ERR, "failed to %s promisc"
					", status %d", dev->flags&IFF_PROMISC ?
					"enable" : "disable", status);
1181 1182 1183 1184 1185
		}
	}

	memset(&mac_info, 0, sizeof(struct macInfo));
	/* Update individual M_CAST address list */
1186
	if ((!vdev->all_multi_flg) && netdev_mc_count(dev)) {
1187 1188
		mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
		list_head = &vdev->vpaths[0].mac_addr_list;
1189
		if ((netdev_mc_count(dev) +
1190 1191 1192 1193 1194 1195 1196
			(vdev->vpaths[0].mac_addr_cnt - mcast_cnt)) >
				vdev->vpaths[0].max_mac_addr_cnt)
			goto _set_all_mcast;

		/* Delete previous MC's */
		for (i = 0; i < mcast_cnt; i++) {
			list_for_each_safe(entry, next, list_head) {
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				mac_entry = (struct vxge_mac_addrs *)entry;
1198 1199 1200 1201
				/* Copy the mac address to delete */
				mac_address = (u8 *)&mac_entry->macaddr;
				memcpy(mac_info.macaddr, mac_address, ETH_ALEN);

1202
				if (is_multicast_ether_addr(mac_info.macaddr)) {
1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215
					for (vpath_idx = 0; vpath_idx <
						vdev->no_of_vpath;
						vpath_idx++) {
						mac_info.vpath_no = vpath_idx;
						status = vxge_del_mac_addr(
								vdev,
								&mac_info);
					}
				}
			}
		}

		/* Add new ones */
1216 1217
		netdev_for_each_mc_addr(ha, dev) {
			memcpy(mac_info.macaddr, ha->addr, ETH_ALEN);
1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238
			for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
					vpath_idx++) {
				mac_info.vpath_no = vpath_idx;
				mac_info.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
				status = vxge_add_mac_addr(vdev, &mac_info);
				if (status != VXGE_HW_OK) {
					vxge_debug_init(VXGE_ERR,
						"%s:%d Setting individual"
						"multicast address failed",
						__func__, __LINE__);
					goto _set_all_mcast;
				}
			}
		}

		return;
_set_all_mcast:
		mcast_cnt = vdev->vpaths[0].mcast_addr_cnt;
		/* Delete previous MC's */
		for (i = 0; i < mcast_cnt; i++) {
			list_for_each_safe(entry, next, list_head) {
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				mac_entry = (struct vxge_mac_addrs *)entry;
1240 1241 1242 1243
				/* Copy the mac address to delete */
				mac_address = (u8 *)&mac_entry->macaddr;
				memcpy(mac_info.macaddr, mac_address, ETH_ALEN);

1244
				if (is_multicast_ether_addr(mac_info.macaddr))
1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256
					break;
			}

			for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath;
					vpath_idx++) {
				mac_info.vpath_no = vpath_idx;
				status = vxge_del_mac_addr(vdev, &mac_info);
			}
		}

		/* Enable all multicast */
		for (i = 0; i < vdev->no_of_vpath; i++) {
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			vpath = &vdev->vpaths[i];
			vxge_assert(vpath->is_open);

			status = vxge_hw_vpath_mcast_enable(vpath->handle);
1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284
			if (status != VXGE_HW_OK) {
				vxge_debug_init(VXGE_ERR,
					"%s:%d Enabling all multicasts failed",
					 __func__, __LINE__);
			}
			vdev->all_multi_flg = 1;
		}
		dev->flags |= IFF_ALLMULTI;
	}

	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d  Exiting...", __func__, __LINE__);
}

/**
 * vxge_set_mac_addr
 * @dev: pointer to the device structure
 *
 * Update entry "0" (default MAC addr)
 */
static int vxge_set_mac_addr(struct net_device *dev, void *p)
{
	struct sockaddr *addr = p;
	struct vxgedev *vdev;
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	struct __vxge_hw_device *hldev;
1286 1287 1288 1289 1290 1291
	enum vxge_hw_status status = VXGE_HW_OK;
	struct macInfo mac_info_new, mac_info_old;
	int vpath_idx = 0;

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);

1292
	vdev = netdev_priv(dev);
1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356
	hldev = vdev->devh;

	if (!is_valid_ether_addr(addr->sa_data))
		return -EINVAL;

	memset(&mac_info_new, 0, sizeof(struct macInfo));
	memset(&mac_info_old, 0, sizeof(struct macInfo));

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d  Exiting...",
		__func__, __LINE__);

	/* Get the old address */
	memcpy(mac_info_old.macaddr, dev->dev_addr, dev->addr_len);

	/* Copy the new address */
	memcpy(mac_info_new.macaddr, addr->sa_data, dev->addr_len);

	/* First delete the old mac address from all the vpaths
	as we can't specify the index while adding new mac address */
	for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
		struct vxge_vpath *vpath = &vdev->vpaths[vpath_idx];
		if (!vpath->is_open) {
			/* This can happen when this interface is added/removed
			to the bonding interface. Delete this station address
			from the linked list */
			vxge_mac_list_del(vpath, &mac_info_old);

			/* Add this new address to the linked list
			for later restoring */
			vxge_mac_list_add(vpath, &mac_info_new);

			continue;
		}
		/* Delete the station address */
		mac_info_old.vpath_no = vpath_idx;
		status = vxge_del_mac_addr(vdev, &mac_info_old);
	}

	if (unlikely(!is_vxge_card_up(vdev))) {
		memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
		return VXGE_HW_OK;
	}

	/* Set this mac address to all the vpaths */
	for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
		mac_info_new.vpath_no = vpath_idx;
		mac_info_new.state = VXGE_LL_MAC_ADDR_IN_DA_TABLE;
		status = vxge_add_mac_addr(vdev, &mac_info_new);
		if (status != VXGE_HW_OK)
			return -EINVAL;
	}

	memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);

	return status;
}

/*
 * vxge_vpath_intr_enable
 * @vdev: pointer to vdev
 * @vp_id: vpath for which to enable the interrupts
 *
 * Enables the interrupts for the vpath
*/
1357
static void vxge_vpath_intr_enable(struct vxgedev *vdev, int vp_id)
1358 1359
{
	struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1360 1361 1362
	int msix_id = 0;
	int tim_msix_id[4] = {0, 1, 0, 0};
	int alarm_msix_id = VXGE_ALARM_MSIX_ID;
1363 1364 1365 1366 1367 1368 1369 1370 1371

	vxge_hw_vpath_intr_enable(vpath->handle);

	if (vdev->config.intr_type == INTA)
		vxge_hw_vpath_inta_unmask_tx_rx(vpath->handle);
	else {
		vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
			alarm_msix_id);

1372
		msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1373 1374 1375 1376
		vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
		vxge_hw_vpath_msix_unmask(vpath->handle, msix_id + 1);

		/* enable the alarm vector */
1377 1378 1379
		msix_id = (vpath->handle->vpath->hldev->first_vp_id *
			VXGE_HW_VPATH_MSIX_ACTIVE) + alarm_msix_id;
		vxge_hw_vpath_msix_unmask(vpath->handle, msix_id);
1380 1381 1382 1383 1384 1385 1386 1387 1388 1389
	}
}

/*
 * vxge_vpath_intr_disable
 * @vdev: pointer to vdev
 * @vp_id: vpath for which to disable the interrupts
 *
 * Disables the interrupts for the vpath
*/
1390
static void vxge_vpath_intr_disable(struct vxgedev *vdev, int vp_id)
1391 1392
{
	struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1393
	struct __vxge_hw_device *hldev;
1394 1395
	int msix_id;

1396
	hldev = pci_get_drvdata(vdev->pdev);
1397 1398 1399

	vxge_hw_vpath_wait_receive_idle(hldev, vpath->device_id);

1400 1401 1402 1403 1404
	vxge_hw_vpath_intr_disable(vpath->handle);

	if (vdev->config.intr_type == INTA)
		vxge_hw_vpath_inta_mask_tx_rx(vpath->handle);
	else {
1405
		msix_id = vpath->device_id * VXGE_HW_VPATH_MSIX_ACTIVE;
1406 1407 1408 1409
		vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
		vxge_hw_vpath_msix_mask(vpath->handle, msix_id + 1);

		/* disable the alarm vector */
1410 1411
		msix_id = (vpath->handle->vpath->hldev->first_vp_id *
			VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
1412 1413 1414 1415
		vxge_hw_vpath_msix_mask(vpath->handle, msix_id);
	}
}

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1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491
/* list all mac addresses from DA table */
static enum vxge_hw_status
vxge_search_mac_addr_in_da_table(struct vxge_vpath *vpath, struct macInfo *mac)
{
	enum vxge_hw_status status = VXGE_HW_OK;
	unsigned char macmask[ETH_ALEN];
	unsigned char macaddr[ETH_ALEN];

	status = vxge_hw_vpath_mac_addr_get(vpath->handle,
				macaddr, macmask);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"DA config list entry failed for vpath:%d",
			vpath->device_id);
		return status;
	}

	while (memcmp(mac->macaddr, macaddr, ETH_ALEN)) {
		status = vxge_hw_vpath_mac_addr_get_next(vpath->handle,
				macaddr, macmask);
		if (status != VXGE_HW_OK)
			break;
	}

	return status;
}

/* Store all mac addresses from the list to the DA table */
static enum vxge_hw_status vxge_restore_vpath_mac_addr(struct vxge_vpath *vpath)
{
	enum vxge_hw_status status = VXGE_HW_OK;
	struct macInfo mac_info;
	u8 *mac_address = NULL;
	struct list_head *entry, *next;

	memset(&mac_info, 0, sizeof(struct macInfo));

	if (vpath->is_open) {
		list_for_each_safe(entry, next, &vpath->mac_addr_list) {
			mac_address =
				(u8 *)&
				((struct vxge_mac_addrs *)entry)->macaddr;
			memcpy(mac_info.macaddr, mac_address, ETH_ALEN);
			((struct vxge_mac_addrs *)entry)->state =
				VXGE_LL_MAC_ADDR_IN_DA_TABLE;
			/* does this mac address already exist in da table? */
			status = vxge_search_mac_addr_in_da_table(vpath,
				&mac_info);
			if (status != VXGE_HW_OK) {
				/* Add this mac address to the DA table */
				status = vxge_hw_vpath_mac_addr_add(
					vpath->handle, mac_info.macaddr,
					mac_info.macmask,
				    VXGE_HW_VPATH_MAC_ADDR_ADD_DUPLICATE);
				if (status != VXGE_HW_OK) {
					vxge_debug_init(VXGE_ERR,
					    "DA add entry failed for vpath:%d",
					    vpath->device_id);
					((struct vxge_mac_addrs *)entry)->state
						= VXGE_LL_MAC_ADDR_IN_LIST;
				}
			}
		}
	}

	return status;
}

/* Store all vlan ids from the list to the vid table */
static enum vxge_hw_status
vxge_restore_vpath_vid_table(struct vxge_vpath *vpath)
{
	enum vxge_hw_status status = VXGE_HW_OK;
	struct vxgedev *vdev = vpath->vdev;
	u16 vid;

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1492 1493
	if (!vpath->is_open)
		return status;
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1495 1496
	for_each_set_bit(vid, vdev->active_vlans, VLAN_N_VID)
		status = vxge_hw_vpath_vid_add(vpath->handle, vid);
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	return status;
}

1501 1502 1503 1504 1505 1506 1507 1508 1509 1510
/*
 * vxge_reset_vpath
 * @vdev: pointer to vdev
 * @vp_id: vpath to reset
 *
 * Resets the vpath
*/
static int vxge_reset_vpath(struct vxgedev *vdev, int vp_id)
{
	enum vxge_hw_status status = VXGE_HW_OK;
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1511
	struct vxge_vpath *vpath = &vdev->vpaths[vp_id];
1512 1513 1514 1515 1516 1517 1518 1519 1520 1521
	int ret = 0;

	/* check if device is down already */
	if (unlikely(!is_vxge_card_up(vdev)))
		return 0;

	/* is device reset already scheduled */
	if (test_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
		return 0;

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1522 1523
	if (vpath->handle) {
		if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1524
			if (is_vxge_card_up(vdev) &&
J
Jon Mason 已提交
1525
				vxge_hw_vpath_recover_from_reset(vpath->handle)
1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540
					!= VXGE_HW_OK) {
				vxge_debug_init(VXGE_ERR,
					"vxge_hw_vpath_recover_from_reset"
					"failed for vpath:%d", vp_id);
				return status;
			}
		} else {
			vxge_debug_init(VXGE_ERR,
				"vxge_hw_vpath_reset failed for"
				"vpath:%d", vp_id);
				return status;
		}
	} else
		return VXGE_HW_FAIL;

J
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1541 1542
	vxge_restore_vpath_mac_addr(vpath);
	vxge_restore_vpath_vid_table(vpath);
1543 1544

	/* Enable all broadcast */
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1545 1546 1547 1548 1549 1550 1551 1552 1553 1554
	vxge_hw_vpath_bcast_enable(vpath->handle);

	/* Enable all multicast */
	if (vdev->all_multi_flg) {
		status = vxge_hw_vpath_mcast_enable(vpath->handle);
		if (status != VXGE_HW_OK)
			vxge_debug_init(VXGE_ERR,
				"%s:%d Enabling multicast failed",
				__func__, __LINE__);
	}
1555 1556 1557 1558 1559 1560 1561

	/* Enable the interrupts */
	vxge_vpath_intr_enable(vdev, vp_id);

	smp_wmb();

	/* Enable the flow of traffic through the vpath */
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1562
	vxge_hw_vpath_enable(vpath->handle);
1563 1564

	smp_wmb();
J
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1565 1566
	vxge_hw_vpath_rx_doorbell_init(vpath->handle);
	vpath->ring.last_status = VXGE_HW_OK;
1567 1568 1569 1570 1571

	/* Vpath reset done */
	clear_bit(vp_id, &vdev->vp_reset);

	/* Start the vpath queue */
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1572 1573
	if (netif_tx_queue_stopped(vpath->fifo.txq))
		netif_tx_wake_queue(vpath->fifo.txq);
1574 1575 1576 1577

	return ret;
}

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/* Configure CI */
static void vxge_config_ci_for_tti_rti(struct vxgedev *vdev)
{
	int i = 0;

	/* Enable CI for RTI */
	if (vdev->config.intr_type == MSI_X) {
		for (i = 0; i < vdev->no_of_vpath; i++) {
			struct __vxge_hw_ring *hw_ring;

			hw_ring = vdev->vpaths[i].ring.handle;
			vxge_hw_vpath_dynamic_rti_ci_set(hw_ring);
		}
	}

	/* Enable CI for TTI */
	for (i = 0; i < vdev->no_of_vpath; i++) {
		struct __vxge_hw_fifo *hw_fifo = vdev->vpaths[i].fifo.handle;
		vxge_hw_vpath_tti_ci_set(hw_fifo);
		/*
		 * For Inta (with or without napi), Set CI ON for only one
		 * vpath. (Have only one free running timer).
		 */
		if ((vdev->config.intr_type == INTA) && (i == 0))
			break;
	}

	return;
}

1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625
static int do_vxge_reset(struct vxgedev *vdev, int event)
{
	enum vxge_hw_status status;
	int ret = 0, vp_id, i;

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);

	if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET)) {
		/* check if device is down already */
		if (unlikely(!is_vxge_card_up(vdev)))
			return 0;

		/* is reset already scheduled */
		if (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
			return 0;
	}

	if (event == VXGE_LL_FULL_RESET) {
J
Jon Mason 已提交
1626 1627
		netif_carrier_off(vdev->ndev);

1628 1629 1630 1631 1632 1633
		/* wait for all the vpath reset to complete */
		for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
			while (test_bit(vp_id, &vdev->vp_reset))
				msleep(50);
		}

J
Jon Mason 已提交
1634 1635
		netif_carrier_on(vdev->ndev);

1636 1637 1638 1639 1640
		/* if execution mode is set to debug, don't reset the adapter */
		if (unlikely(vdev->exec_mode)) {
			vxge_debug_init(VXGE_ERR,
				"%s: execution mode is debug, returning..",
				vdev->ndev->name);
J
Jon Mason 已提交
1641 1642 1643
			clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
			netif_tx_stop_all_queues(vdev->ndev);
			return 0;
1644 1645 1646 1647
		}
	}

	if (event == VXGE_LL_FULL_RESET) {
1648
		vxge_hw_device_wait_receive_idle(vdev->devh);
1649 1650 1651 1652
		vxge_hw_device_intr_disable(vdev->devh);

		switch (vdev->cric_err_event) {
		case VXGE_HW_EVENT_UNKNOWN:
J
Jon Mason 已提交
1653
			netif_tx_stop_all_queues(vdev->ndev);
1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673
			vxge_debug_init(VXGE_ERR,
				"fatal: %s: Disabling device due to"
				"unknown error",
				vdev->ndev->name);
			ret = -EPERM;
			goto out;
		case VXGE_HW_EVENT_RESET_START:
			break;
		case VXGE_HW_EVENT_RESET_COMPLETE:
		case VXGE_HW_EVENT_LINK_DOWN:
		case VXGE_HW_EVENT_LINK_UP:
		case VXGE_HW_EVENT_ALARM_CLEARED:
		case VXGE_HW_EVENT_ECCERR:
		case VXGE_HW_EVENT_MRPCIM_ECCERR:
			ret = -EPERM;
			goto out;
		case VXGE_HW_EVENT_FIFO_ERR:
		case VXGE_HW_EVENT_VPATH_ERR:
			break;
		case VXGE_HW_EVENT_CRITICAL_ERR:
J
Jon Mason 已提交
1674
			netif_tx_stop_all_queues(vdev->ndev);
1675 1676 1677 1678 1679 1680 1681 1682 1683
			vxge_debug_init(VXGE_ERR,
				"fatal: %s: Disabling device due to"
				"serious error",
				vdev->ndev->name);
			/* SOP or device reset required */
			/* This event is not currently used */
			ret = -EPERM;
			goto out;
		case VXGE_HW_EVENT_SERR:
J
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1684
			netif_tx_stop_all_queues(vdev->ndev);
1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695
			vxge_debug_init(VXGE_ERR,
				"fatal: %s: Disabling device due to"
				"serious error",
				vdev->ndev->name);
			ret = -EPERM;
			goto out;
		case VXGE_HW_EVENT_SRPCIM_SERR:
		case VXGE_HW_EVENT_MRPCIM_SERR:
			ret = -EPERM;
			goto out;
		case VXGE_HW_EVENT_SLOT_FREEZE:
J
Jon Mason 已提交
1696
			netif_tx_stop_all_queues(vdev->ndev);
1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709
			vxge_debug_init(VXGE_ERR,
				"fatal: %s: Disabling device due to"
				"slot freeze",
				vdev->ndev->name);
			ret = -EPERM;
			goto out;
		default:
			break;

		}
	}

	if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_START_RESET))
J
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1710
		netif_tx_stop_all_queues(vdev->ndev);
1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769

	if (event == VXGE_LL_FULL_RESET) {
		status = vxge_reset_all_vpaths(vdev);
		if (status != VXGE_HW_OK) {
			vxge_debug_init(VXGE_ERR,
				"fatal: %s: can not reset vpaths",
				vdev->ndev->name);
			ret = -EPERM;
			goto out;
		}
	}

	if (event == VXGE_LL_COMPL_RESET) {
		for (i = 0; i < vdev->no_of_vpath; i++)
			if (vdev->vpaths[i].handle) {
				if (vxge_hw_vpath_recover_from_reset(
					vdev->vpaths[i].handle)
						!= VXGE_HW_OK) {
					vxge_debug_init(VXGE_ERR,
						"vxge_hw_vpath_recover_"
						"from_reset failed for vpath: "
						"%d", i);
					ret = -EPERM;
					goto out;
				}
				} else {
					vxge_debug_init(VXGE_ERR,
					"vxge_hw_vpath_reset failed for "
						"vpath:%d", i);
					ret = -EPERM;
					goto out;
				}
	}

	if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET)) {
		/* Reprogram the DA table with populated mac addresses */
		for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
			vxge_restore_vpath_mac_addr(&vdev->vpaths[vp_id]);
			vxge_restore_vpath_vid_table(&vdev->vpaths[vp_id]);
		}

		/* enable vpath interrupts */
		for (i = 0; i < vdev->no_of_vpath; i++)
			vxge_vpath_intr_enable(vdev, i);

		vxge_hw_device_intr_enable(vdev->devh);

		smp_wmb();

		/* Indicate card up */
		set_bit(__VXGE_STATE_CARD_UP, &vdev->state);

		/* Get the traffic to flow through the vpaths */
		for (i = 0; i < vdev->no_of_vpath; i++) {
			vxge_hw_vpath_enable(vdev->vpaths[i].handle);
			smp_wmb();
			vxge_hw_vpath_rx_doorbell_init(vdev->vpaths[i].handle);
		}

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1770
		netif_tx_wake_all_queues(vdev->ndev);
1771 1772
	}

J
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1773 1774 1775
	/* configure CI */
	vxge_config_ci_for_tti_rti(vdev);

1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791
out:
	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d  Exiting...", __func__, __LINE__);

	/* Indicate reset done */
	if ((event == VXGE_LL_FULL_RESET) || (event == VXGE_LL_COMPL_RESET))
		clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);
	return ret;
}

/*
 * vxge_reset
 * @vdev: pointer to ll device
 *
 * driver may reset the chip on events of serr, eccerr, etc
 */
J
Jon Mason 已提交
1792
static void vxge_reset(struct work_struct *work)
1793
{
J
Jon Mason 已提交
1794 1795 1796 1797 1798 1799
	struct vxgedev *vdev = container_of(work, struct vxgedev, reset_task);

	if (!netif_running(vdev->ndev))
		return;

	do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815
}

/**
 * vxge_poll - Receive handler when Receive Polling is used.
 * @dev: pointer to the device structure.
 * @budget: Number of packets budgeted to be processed in this iteration.
 *
 * This function comes into picture only if Receive side is being handled
 * through polling (called NAPI in linux). It mostly does what the normal
 * Rx interrupt handler does in terms of descriptor and packet processing
 * but not in an interrupt context. Also it will process a specified number
 * of packets at most in one iteration. This value is passed down by the
 * kernel as the function argument 'budget'.
 */
static int vxge_poll_msix(struct napi_struct *napi, int budget)
{
J
Jon Mason 已提交
1816 1817
	struct vxge_ring *ring = container_of(napi, struct vxge_ring, napi);
	int pkts_processed;
1818 1819
	int budget_org = budget;

J
Jon Mason 已提交
1820 1821
	ring->budget = budget;
	ring->pkts_processed = 0;
1822
	vxge_hw_vpath_poll_rx(ring->handle);
J
Jon Mason 已提交
1823
	pkts_processed = ring->pkts_processed;
1824 1825 1826

	if (ring->pkts_processed < budget_org) {
		napi_complete(napi);
J
Jon Mason 已提交
1827

1828 1829 1830 1831
		/* Re enable the Rx interrupts for the vpath */
		vxge_hw_channel_msix_unmask(
				(struct __vxge_hw_channel *)ring->handle,
				ring->rx_vector_no);
J
Jon Mason 已提交
1832
		mmiowb();
1833 1834
	}

J
Jon Mason 已提交
1835 1836 1837 1838
	/* We are copying and returning the local variable, in case if after
	 * clearing the msix interrupt above, if the interrupt fires right
	 * away which can preempt this NAPI thread */
	return pkts_processed;
1839 1840 1841 1842 1843 1844 1845 1846 1847 1848
}

static int vxge_poll_inta(struct napi_struct *napi, int budget)
{
	struct vxgedev *vdev = container_of(napi, struct vxgedev, napi);
	int pkts_processed = 0;
	int i;
	int budget_org = budget;
	struct vxge_ring *ring;

1849
	struct __vxge_hw_device *hldev = pci_get_drvdata(vdev->pdev);
1850 1851 1852 1853

	for (i = 0; i < vdev->no_of_vpath; i++) {
		ring = &vdev->vpaths[i].ring;
		ring->budget = budget;
J
Jon Mason 已提交
1854
		ring->pkts_processed = 0;
1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885
		vxge_hw_vpath_poll_rx(ring->handle);
		pkts_processed += ring->pkts_processed;
		budget -= ring->pkts_processed;
		if (budget <= 0)
			break;
	}

	VXGE_COMPLETE_ALL_TX(vdev);

	if (pkts_processed < budget_org) {
		napi_complete(napi);
		/* Re enable the Rx interrupts for the ring */
		vxge_hw_device_unmask_all(hldev);
		vxge_hw_device_flush_io(hldev);
	}

	return pkts_processed;
}

#ifdef CONFIG_NET_POLL_CONTROLLER
/**
 * vxge_netpoll - netpoll event handler entry point
 * @dev : pointer to the device structure.
 * Description:
 *      This function will be called by upper layer to check for events on the
 * interface in situations where interrupts are disabled. It is used for
 * specific in-kernel networking tasks, such as remote consoles and kernel
 * debugging over the network (example netdump in RedHat).
 */
static void vxge_netpoll(struct net_device *dev)
{
1886 1887 1888 1889
	struct vxgedev *vdev = netdev_priv(dev);
	struct pci_dev *pdev = vdev->pdev;
	struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
	const int irq = pdev->irq;
1890 1891 1892

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);

1893
	if (pci_channel_offline(pdev))
1894 1895
		return;

1896
	disable_irq(irq);
1897 1898 1899 1900 1901 1902
	vxge_hw_device_clear_tx_rx(hldev);

	vxge_hw_device_clear_tx_rx(hldev);
	VXGE_COMPLETE_ALL_RX(vdev);
	VXGE_COMPLETE_ALL_TX(vdev);

1903
	enable_irq(irq);
1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940

	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d  Exiting...", __func__, __LINE__);
}
#endif

/* RTH configuration */
static enum vxge_hw_status vxge_rth_configure(struct vxgedev *vdev)
{
	enum vxge_hw_status status = VXGE_HW_OK;
	struct vxge_hw_rth_hash_types hash_types;
	u8 itable[256] = {0}; /* indirection table */
	u8 mtable[256] = {0}; /* CPU to vpath mapping  */
	int index;

	/*
	 * Filling
	 * 	- itable with bucket numbers
	 * 	- mtable with bucket-to-vpath mapping
	 */
	for (index = 0; index < (1 << vdev->config.rth_bkt_sz); index++) {
		itable[index] = index;
		mtable[index] = index % vdev->no_of_vpath;
	}

	/* set indirection table, bucket-to-vpath mapping */
	status = vxge_hw_vpath_rts_rth_itable_set(vdev->vp_handles,
						vdev->no_of_vpath,
						mtable, itable,
						vdev->config.rth_bkt_sz);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"RTH indirection table configuration failed "
			"for vpath:%d", vdev->vpaths[0].device_id);
		return status;
	}

J
Jon Mason 已提交
1941 1942 1943 1944 1945 1946 1947 1948 1949
	/* Fill RTH hash types */
	hash_types.hash_type_tcpipv4_en   = vdev->config.rth_hash_type_tcpipv4;
	hash_types.hash_type_ipv4_en      = vdev->config.rth_hash_type_ipv4;
	hash_types.hash_type_tcpipv6_en   = vdev->config.rth_hash_type_tcpipv6;
	hash_types.hash_type_ipv6_en      = vdev->config.rth_hash_type_ipv6;
	hash_types.hash_type_tcpipv6ex_en =
					vdev->config.rth_hash_type_tcpipv6ex;
	hash_types.hash_type_ipv6ex_en    = vdev->config.rth_hash_type_ipv6ex;

1950
	/*
J
Jon Mason 已提交
1951 1952 1953 1954 1955
	 * Because the itable_set() method uses the active_table field
	 * for the target virtual path the RTH config should be updated
	 * for all VPATHs. The h/w only uses the lowest numbered VPATH
	 * when steering frames.
	 */
1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973
	 for (index = 0; index < vdev->no_of_vpath; index++) {
		status = vxge_hw_vpath_rts_rth_set(
				vdev->vpaths[index].handle,
				vdev->config.rth_algorithm,
				&hash_types,
				vdev->config.rth_bkt_sz);
		 if (status != VXGE_HW_OK) {
			vxge_debug_init(VXGE_ERR,
				"RTH configuration failed for vpath:%d",
				vdev->vpaths[index].device_id);
			return status;
		 }
	 }

	return status;
}

/* reset vpaths */
1974
enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev)
1975 1976
{
	enum vxge_hw_status status = VXGE_HW_OK;
J
Jon Mason 已提交
1977 1978
	struct vxge_vpath *vpath;
	int i;
1979

J
Jon Mason 已提交
1980 1981 1982 1983
	for (i = 0; i < vdev->no_of_vpath; i++) {
		vpath = &vdev->vpaths[i];
		if (vpath->handle) {
			if (vxge_hw_vpath_reset(vpath->handle) == VXGE_HW_OK) {
1984 1985
				if (is_vxge_card_up(vdev) &&
					vxge_hw_vpath_recover_from_reset(
J
Jon Mason 已提交
1986
						vpath->handle) != VXGE_HW_OK) {
1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999
					vxge_debug_init(VXGE_ERR,
						"vxge_hw_vpath_recover_"
						"from_reset failed for vpath: "
						"%d", i);
					return status;
				}
			} else {
				vxge_debug_init(VXGE_ERR,
					"vxge_hw_vpath_reset failed for "
					"vpath:%d", i);
					return status;
			}
		}
J
Jon Mason 已提交
2000 2001
	}

2002 2003 2004 2005
	return status;
}

/* close vpaths */
2006
static void vxge_close_vpaths(struct vxgedev *vdev, int index)
2007
{
J
Jon Mason 已提交
2008
	struct vxge_vpath *vpath;
2009
	int i;
J
Jon Mason 已提交
2010

2011
	for (i = index; i < vdev->no_of_vpath; i++) {
J
Jon Mason 已提交
2012 2013 2014 2015
		vpath = &vdev->vpaths[i];

		if (vpath->handle && vpath->is_open) {
			vxge_hw_vpath_close(vpath->handle);
2016 2017
			vdev->stats.vpaths_open--;
		}
J
Jon Mason 已提交
2018 2019
		vpath->is_open = 0;
		vpath->handle = NULL;
2020 2021 2022 2023
	}
}

/* open vpaths */
2024
static int vxge_open_vpaths(struct vxgedev *vdev)
2025
{
J
Jon Mason 已提交
2026
	struct vxge_hw_vpath_attr attr;
2027
	enum vxge_hw_status status;
J
Jon Mason 已提交
2028
	struct vxge_vpath *vpath;
2029
	u32 vp_id = 0;
J
Jon Mason 已提交
2030
	int i;
2031 2032

	for (i = 0; i < vdev->no_of_vpath; i++) {
J
Jon Mason 已提交
2033 2034
		vpath = &vdev->vpaths[i];
		vxge_assert(vpath->is_configured);
J
Jon Mason 已提交
2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050

		if (!vdev->titan1) {
			struct vxge_hw_vp_config *vcfg;
			vcfg = &vdev->devh->config.vp_config[vpath->device_id];

			vcfg->rti.urange_a = RTI_T1A_RX_URANGE_A;
			vcfg->rti.urange_b = RTI_T1A_RX_URANGE_B;
			vcfg->rti.urange_c = RTI_T1A_RX_URANGE_C;
			vcfg->tti.uec_a = TTI_T1A_TX_UFC_A;
			vcfg->tti.uec_b = TTI_T1A_TX_UFC_B;
			vcfg->tti.uec_c = TTI_T1A_TX_UFC_C(vdev->mtu);
			vcfg->tti.uec_d = TTI_T1A_TX_UFC_D(vdev->mtu);
			vcfg->tti.ltimer_val = VXGE_T1A_TTI_LTIMER_VAL;
			vcfg->tti.rtimer_val = VXGE_T1A_TTI_RTIMER_VAL;
		}

J
Jon Mason 已提交
2051
		attr.vp_id = vpath->device_id;
2052 2053 2054
		attr.fifo_attr.callback = vxge_xmit_compl;
		attr.fifo_attr.txdl_term = vxge_tx_term;
		attr.fifo_attr.per_txdl_space = sizeof(struct vxge_tx_priv);
J
Jon Mason 已提交
2055
		attr.fifo_attr.userdata = &vpath->fifo;
2056 2057 2058 2059 2060

		attr.ring_attr.callback = vxge_rx_1b_compl;
		attr.ring_attr.rxd_init = vxge_rx_initial_replenish;
		attr.ring_attr.rxd_term = vxge_rx_term;
		attr.ring_attr.per_rxd_space = sizeof(struct vxge_rx_priv);
J
Jon Mason 已提交
2061
		attr.ring_attr.userdata = &vpath->ring;
2062

J
Jon Mason 已提交
2063 2064
		vpath->ring.ndev = vdev->ndev;
		vpath->ring.pdev = vdev->pdev;
J
Jon Mason 已提交
2065

J
Jon Mason 已提交
2066
		status = vxge_hw_vpath_open(vdev->devh, &attr, &vpath->handle);
2067
		if (status == VXGE_HW_OK) {
J
Jon Mason 已提交
2068
			vpath->fifo.handle =
2069
			    (struct __vxge_hw_fifo *)attr.fifo_attr.userdata;
J
Jon Mason 已提交
2070
			vpath->ring.handle =
2071
			    (struct __vxge_hw_ring *)attr.ring_attr.userdata;
J
Jon Mason 已提交
2072
			vpath->fifo.tx_steering_type =
2073
				vdev->config.tx_steering_type;
J
Jon Mason 已提交
2074 2075
			vpath->fifo.ndev = vdev->ndev;
			vpath->fifo.pdev = vdev->pdev;
2076 2077 2078 2079

			u64_stats_init(&vpath->fifo.stats.syncp);
			u64_stats_init(&vpath->ring.stats.syncp);

J
Jon Mason 已提交
2080 2081 2082 2083 2084 2085
			if (vdev->config.tx_steering_type)
				vpath->fifo.txq =
					netdev_get_tx_queue(vdev->ndev, i);
			else
				vpath->fifo.txq =
					netdev_get_tx_queue(vdev->ndev, 0);
J
Jon Mason 已提交
2086
			vpath->fifo.indicate_max_pkts =
2087
				vdev->config.fifo_indicate_max_pkts;
J
Jon Mason 已提交
2088
			vpath->fifo.tx_vector_no = 0;
J
Jon Mason 已提交
2089
			vpath->ring.rx_vector_no = 0;
2090
			vpath->ring.rx_hwts = vdev->rx_hwts;
J
Jon Mason 已提交
2091 2092 2093
			vpath->is_open = 1;
			vdev->vp_handles[i] = vpath->handle;
			vpath->ring.vlan_tag_strip = vdev->vlan_tag_strip;
2094 2095 2096
			vdev->stats.vpaths_open++;
		} else {
			vdev->stats.vpath_open_fail++;
J
Jon Mason 已提交
2097 2098 2099 2100
			vxge_debug_init(VXGE_ERR, "%s: vpath: %d failed to "
					"open with status: %d",
					vdev->ndev->name, vpath->device_id,
					status);
2101 2102 2103 2104
			vxge_close_vpaths(vdev, 0);
			return -EPERM;
		}

J
Jon Mason 已提交
2105
		vp_id = vpath->handle->vpath->vp_id;
2106 2107
		vdev->vpaths_deployed |= vxge_mBIT(vp_id);
	}
J
Jon Mason 已提交
2108

2109 2110 2111
	return VXGE_HW_OK;
}

J
Jon Mason 已提交
2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166
/**
 *  adaptive_coalesce_tx_interrupts - Changes the interrupt coalescing
 *  if the interrupts are not within a range
 *  @fifo: pointer to transmit fifo structure
 *  Description: The function changes boundary timer and restriction timer
 *  value depends on the traffic
 *  Return Value: None
 */
static void adaptive_coalesce_tx_interrupts(struct vxge_fifo *fifo)
{
	fifo->interrupt_count++;
	if (jiffies > fifo->jiffies + HZ / 100) {
		struct __vxge_hw_fifo *hw_fifo = fifo->handle;

		fifo->jiffies = jiffies;
		if (fifo->interrupt_count > VXGE_T1A_MAX_TX_INTERRUPT_COUNT &&
		    hw_fifo->rtimer != VXGE_TTI_RTIMER_ADAPT_VAL) {
			hw_fifo->rtimer = VXGE_TTI_RTIMER_ADAPT_VAL;
			vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
		} else if (hw_fifo->rtimer != 0) {
			hw_fifo->rtimer = 0;
			vxge_hw_vpath_dynamic_tti_rtimer_set(hw_fifo);
		}
		fifo->interrupt_count = 0;
	}
}

/**
 *  adaptive_coalesce_rx_interrupts - Changes the interrupt coalescing
 *  if the interrupts are not within a range
 *  @ring: pointer to receive ring structure
 *  Description: The function increases of decreases the packet counts within
 *  the ranges of traffic utilization, if the interrupts due to this ring are
 *  not within a fixed range.
 *  Return Value: Nothing
 */
static void adaptive_coalesce_rx_interrupts(struct vxge_ring *ring)
{
	ring->interrupt_count++;
	if (jiffies > ring->jiffies + HZ / 100) {
		struct __vxge_hw_ring *hw_ring = ring->handle;

		ring->jiffies = jiffies;
		if (ring->interrupt_count > VXGE_T1A_MAX_INTERRUPT_COUNT &&
		    hw_ring->rtimer != VXGE_RTI_RTIMER_ADAPT_VAL) {
			hw_ring->rtimer = VXGE_RTI_RTIMER_ADAPT_VAL;
			vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
		} else if (hw_ring->rtimer != 0) {
			hw_ring->rtimer = 0;
			vxge_hw_vpath_dynamic_rti_rtimer_set(hw_ring);
		}
		ring->interrupt_count = 0;
	}
}

2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179
/*
 *  vxge_isr_napi
 *  @irq: the irq of the device.
 *  @dev_id: a void pointer to the hldev structure of the Titan device
 *  @ptregs: pointer to the registers pushed on the stack.
 *
 *  This function is the ISR handler of the device when napi is enabled. It
 *  identifies the reason for the interrupt and calls the relevant service
 *  routines.
 */
static irqreturn_t vxge_isr_napi(int irq, void *dev_id)
{
	struct net_device *dev;
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2180
	struct __vxge_hw_device *hldev;
2181 2182
	u64 reason;
	enum vxge_hw_status status;
J
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2183
	struct vxgedev *vdev = (struct vxgedev *)dev_id;
2184 2185 2186

	vxge_debug_intr(VXGE_TRACE, "%s:%d", __func__, __LINE__);

S
Sreenivasa Honnur 已提交
2187
	dev = vdev->ndev;
2188
	hldev = pci_get_drvdata(vdev->pdev);
2189 2190 2191 2192 2193

	if (pci_channel_offline(vdev->pdev))
		return IRQ_NONE;

	if (unlikely(!is_vxge_card_up(vdev)))
2194
		return IRQ_HANDLED;
2195

J
Jon Mason 已提交
2196
	status = vxge_hw_device_begin_irq(hldev, vdev->exec_mode, &reason);
2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226
	if (status == VXGE_HW_OK) {
		vxge_hw_device_mask_all(hldev);

		if (reason &
			VXGE_HW_TITAN_GENERAL_INT_STATUS_VPATH_TRAFFIC_INT(
			vdev->vpaths_deployed >>
			(64 - VXGE_HW_MAX_VIRTUAL_PATHS))) {

			vxge_hw_device_clear_tx_rx(hldev);
			napi_schedule(&vdev->napi);
			vxge_debug_intr(VXGE_TRACE,
				"%s:%d  Exiting...", __func__, __LINE__);
			return IRQ_HANDLED;
		} else
			vxge_hw_device_unmask_all(hldev);
	} else if (unlikely((status == VXGE_HW_ERR_VPATH) ||
		(status == VXGE_HW_ERR_CRITICAL) ||
		(status == VXGE_HW_ERR_FIFO))) {
		vxge_hw_device_mask_all(hldev);
		vxge_hw_device_flush_io(hldev);
		return IRQ_HANDLED;
	} else if (unlikely(status == VXGE_HW_ERR_SLOT_FREEZE))
		return IRQ_HANDLED;

	vxge_debug_intr(VXGE_TRACE, "%s:%d  Exiting...", __func__, __LINE__);
	return IRQ_NONE;
}

#ifdef CONFIG_PCI_MSI

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2227
static irqreturn_t vxge_tx_msix_handle(int irq, void *dev_id)
2228 2229 2230
{
	struct vxge_fifo *fifo = (struct vxge_fifo *)dev_id;

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2231 2232 2233 2234 2235 2236 2237 2238
	adaptive_coalesce_tx_interrupts(fifo);

	vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)fifo->handle,
				  fifo->tx_vector_no);

	vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)fifo->handle,
				   fifo->tx_vector_no);

2239 2240
	VXGE_COMPLETE_VPATH_TX(fifo);

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Jon Mason 已提交
2241 2242 2243 2244 2245
	vxge_hw_channel_msix_unmask((struct __vxge_hw_channel *)fifo->handle,
				    fifo->tx_vector_no);

	mmiowb();

2246 2247 2248
	return IRQ_HANDLED;
}

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2249
static irqreturn_t vxge_rx_msix_napi_handle(int irq, void *dev_id)
2250 2251 2252
{
	struct vxge_ring *ring = (struct vxge_ring *)dev_id;

J
Jon Mason 已提交
2253 2254
	adaptive_coalesce_rx_interrupts(ring);

2255
	vxge_hw_channel_msix_mask((struct __vxge_hw_channel *)ring->handle,
J
Jon Mason 已提交
2256 2257 2258 2259
				  ring->rx_vector_no);

	vxge_hw_channel_msix_clear((struct __vxge_hw_channel *)ring->handle,
				   ring->rx_vector_no);
2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271

	napi_schedule(&ring->napi);
	return IRQ_HANDLED;
}

static irqreturn_t
vxge_alarm_msix_handle(int irq, void *dev_id)
{
	int i;
	enum vxge_hw_status status;
	struct vxge_vpath *vpath = (struct vxge_vpath *)dev_id;
	struct vxgedev *vdev = vpath->vdev;
2272 2273
	int msix_id = (vpath->handle->vpath->vp_id *
		VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2274 2275

	for (i = 0; i < vdev->no_of_vpath; i++) {
L
Lucas De Marchi 已提交
2276
		/* Reduce the chance of losing alarm interrupts by masking
J
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2277 2278 2279
		 * the vector. A pending bit will be set if an alarm is
		 * generated and on unmask the interrupt will be fired.
		 */
2280
		vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
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2281 2282
		vxge_hw_vpath_msix_clear(vdev->vpaths[i].handle, msix_id);
		mmiowb();
2283 2284 2285 2286 2287

		status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
			vdev->exec_mode);
		if (status == VXGE_HW_OK) {
			vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
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2288 2289
						  msix_id);
			mmiowb();
2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301
			continue;
		}
		vxge_debug_intr(VXGE_ERR,
			"%s: vxge_hw_vpath_alarm_process failed %x ",
			VXGE_DRIVER_NAME, status);
	}
	return IRQ_HANDLED;
}

static int vxge_alloc_msix(struct vxgedev *vdev)
{
	int j, i, ret = 0;
2302
	int msix_intr_vect = 0, temp;
2303 2304
	vdev->intr_cnt = 0;

2305
start:
2306 2307 2308 2309 2310 2311
	/* Tx/Rx MSIX Vectors count */
	vdev->intr_cnt = vdev->no_of_vpath * 2;

	/* Alarm MSIX Vectors count */
	vdev->intr_cnt++;

2312 2313
	vdev->entries = kcalloc(vdev->intr_cnt, sizeof(struct msix_entry),
				GFP_KERNEL);
2314 2315 2316 2317
	if (!vdev->entries) {
		vxge_debug_init(VXGE_ERR,
			"%s: memory allocation failed",
			VXGE_DRIVER_NAME);
2318 2319
		ret = -ENOMEM;
		goto alloc_entries_failed;
2320 2321
	}

2322 2323 2324
	vdev->vxge_entries = kcalloc(vdev->intr_cnt,
				     sizeof(struct vxge_msix_entry),
				     GFP_KERNEL);
2325 2326 2327
	if (!vdev->vxge_entries) {
		vxge_debug_init(VXGE_ERR, "%s: memory allocation failed",
			VXGE_DRIVER_NAME);
2328 2329
		ret = -ENOMEM;
		goto alloc_vxge_entries_failed;
2330 2331
	}

2332
	for (i = 0, j = 0; i < vdev->no_of_vpath; i++) {
2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349

		msix_intr_vect = i * VXGE_HW_VPATH_MSIX_ACTIVE;

		/* Initialize the fifo vector */
		vdev->entries[j].entry = msix_intr_vect;
		vdev->vxge_entries[j].entry = msix_intr_vect;
		vdev->vxge_entries[j].in_use = 0;
		j++;

		/* Initialize the ring vector */
		vdev->entries[j].entry = msix_intr_vect + 1;
		vdev->vxge_entries[j].entry = msix_intr_vect + 1;
		vdev->vxge_entries[j].in_use = 0;
		j++;
	}

	/* Initialize the alarm vector */
2350 2351
	vdev->entries[j].entry = VXGE_ALARM_MSIX_ID;
	vdev->vxge_entries[j].entry = VXGE_ALARM_MSIX_ID;
2352 2353
	vdev->vxge_entries[j].in_use = 0;

2354 2355
	ret = pci_enable_msix(vdev->pdev, vdev->entries, vdev->intr_cnt);
	if (ret > 0) {
2356 2357
		vxge_debug_init(VXGE_ERR,
			"%s: MSI-X enable failed for %d vectors, ret: %d",
2358
			VXGE_DRIVER_NAME, vdev->intr_cnt, ret);
2359 2360 2361 2362 2363
		if ((max_config_vpath != VXGE_USE_DEFAULT) || (ret < 3)) {
			ret = -ENODEV;
			goto enable_msix_failed;
		}

2364 2365 2366 2367
		kfree(vdev->entries);
		kfree(vdev->vxge_entries);
		vdev->entries = NULL;
		vdev->vxge_entries = NULL;
2368 2369 2370 2371 2372
		/* Try with less no of vector by reducing no of vpaths count */
		temp = (ret - 1)/2;
		vxge_close_vpaths(vdev, temp);
		vdev->no_of_vpath = temp;
		goto start;
2373 2374 2375 2376
	} else if (ret < 0) {
		ret = -ENODEV;
		goto enable_msix_failed;
	}
2377
	return 0;
2378 2379 2380 2381 2382 2383 2384

enable_msix_failed:
	kfree(vdev->vxge_entries);
alloc_vxge_entries_failed:
	kfree(vdev->entries);
alloc_entries_failed:
	return ret;
2385 2386 2387 2388 2389 2390 2391
}

static int vxge_enable_msix(struct vxgedev *vdev)
{

	int i, ret = 0;
	/* 0 - Tx, 1 - Rx  */
2392 2393
	int tim_msix_id[4] = {0, 1, 0, 0};

2394 2395 2396 2397 2398 2399
	vdev->intr_cnt = 0;

	/* allocate msix vectors */
	ret = vxge_alloc_msix(vdev);
	if (!ret) {
		for (i = 0; i < vdev->no_of_vpath; i++) {
J
Jon Mason 已提交
2400
			struct vxge_vpath *vpath = &vdev->vpaths[i];
2401

J
Jon Mason 已提交
2402 2403 2404 2405 2406
			/* If fifo or ring are not enabled, the MSIX vector for
			 * it should be set to 0.
			 */
			vpath->ring.rx_vector_no = (vpath->device_id *
						VXGE_HW_VPATH_MSIX_ACTIVE) + 1;
2407

J
Jon Mason 已提交
2408 2409 2410
			vpath->fifo.tx_vector_no = (vpath->device_id *
						VXGE_HW_VPATH_MSIX_ACTIVE);

J
Jon Mason 已提交
2411 2412
			vxge_hw_vpath_msix_set(vpath->handle, tim_msix_id,
					       VXGE_ALARM_MSIX_ID);
2413 2414 2415 2416 2417 2418 2419 2420 2421 2422
		}
	}

	return ret;
}

static void vxge_rem_msix_isr(struct vxgedev *vdev)
{
	int intr_cnt;

2423
	for (intr_cnt = 0; intr_cnt < (vdev->no_of_vpath * 2 + 1);
2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444
		intr_cnt++) {
		if (vdev->vxge_entries[intr_cnt].in_use) {
			synchronize_irq(vdev->entries[intr_cnt].vector);
			free_irq(vdev->entries[intr_cnt].vector,
				vdev->vxge_entries[intr_cnt].arg);
			vdev->vxge_entries[intr_cnt].in_use = 0;
		}
	}

	kfree(vdev->entries);
	kfree(vdev->vxge_entries);
	vdev->entries = NULL;
	vdev->vxge_entries = NULL;

	if (vdev->config.intr_type == MSI_X)
		pci_disable_msix(vdev->pdev);
}
#endif

static void vxge_rem_isr(struct vxgedev *vdev)
{
J
Jon Mason 已提交
2445
	struct __vxge_hw_device *hldev;
2446
	hldev = pci_get_drvdata(vdev->pdev);
2447 2448 2449 2450 2451 2452 2453 2454

#ifdef CONFIG_PCI_MSI
	if (vdev->config.intr_type == MSI_X) {
		vxge_rem_msix_isr(vdev);
	} else
#endif
	if (vdev->config.intr_type == INTA) {
			synchronize_irq(vdev->pdev->irq);
S
Sreenivasa Honnur 已提交
2455
			free_irq(vdev->pdev->irq, vdev);
2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471
	}
}

static int vxge_add_isr(struct vxgedev *vdev)
{
	int ret = 0;
#ifdef CONFIG_PCI_MSI
	int vp_idx = 0, intr_idx = 0, intr_cnt = 0, msix_idx = 0, irq_req = 0;
	int pci_fun = PCI_FUNC(vdev->pdev->devfn);

	if (vdev->config.intr_type == MSI_X)
		ret = vxge_enable_msix(vdev);

	if (ret) {
		vxge_debug_init(VXGE_ERR,
			"%s: Enabling MSI-X Failed", VXGE_DRIVER_NAME);
2472 2473 2474
		vxge_debug_init(VXGE_ERR,
			"%s: Defaulting to INTA", VXGE_DRIVER_NAME);
		vdev->config.intr_type = INTA;
2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487
	}

	if (vdev->config.intr_type == MSI_X) {
		for (intr_idx = 0;
		     intr_idx < (vdev->no_of_vpath *
			VXGE_HW_VPATH_MSIX_ACTIVE); intr_idx++) {

			msix_idx = intr_idx % VXGE_HW_VPATH_MSIX_ACTIVE;
			irq_req = 0;

			switch (msix_idx) {
			case 0:
				snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2488 2489 2490 2491
				"%s:vxge:MSI-X %d - Tx - fn:%d vpath:%d",
					vdev->ndev->name,
					vdev->entries[intr_cnt].entry,
					pci_fun, vp_idx);
2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502
				ret = request_irq(
				    vdev->entries[intr_cnt].vector,
					vxge_tx_msix_handle, 0,
					vdev->desc[intr_cnt],
					&vdev->vpaths[vp_idx].fifo);
					vdev->vxge_entries[intr_cnt].arg =
						&vdev->vpaths[vp_idx].fifo;
				irq_req = 1;
				break;
			case 1:
				snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2503 2504 2505 2506
				"%s:vxge:MSI-X %d - Rx - fn:%d vpath:%d",
					vdev->ndev->name,
					vdev->entries[intr_cnt].entry,
					pci_fun, vp_idx);
2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523
				ret = request_irq(
				    vdev->entries[intr_cnt].vector,
					vxge_rx_msix_napi_handle,
					0,
					vdev->desc[intr_cnt],
					&vdev->vpaths[vp_idx].ring);
					vdev->vxge_entries[intr_cnt].arg =
						&vdev->vpaths[vp_idx].ring;
				irq_req = 1;
				break;
			}

			if (ret) {
				vxge_debug_init(VXGE_ERR,
					"%s: MSIX - %d  Registration failed",
					vdev->ndev->name, intr_cnt);
				vxge_rem_msix_isr(vdev);
2524 2525 2526 2527
				vdev->config.intr_type = INTA;
				vxge_debug_init(VXGE_ERR,
					"%s: Defaulting to INTA"
					, vdev->ndev->name);
2528 2529 2530 2531 2532 2533
					goto INTA_MODE;
			}

			if (irq_req) {
				/* We requested for this msix interrupt */
				vdev->vxge_entries[intr_cnt].in_use = 1;
2534 2535
				msix_idx +=  vdev->vpaths[vp_idx].device_id *
					VXGE_HW_VPATH_MSIX_ACTIVE;
2536 2537
				vxge_hw_vpath_msix_unmask(
					vdev->vpaths[vp_idx].handle,
2538
					msix_idx);
2539 2540 2541 2542
				intr_cnt++;
			}

			/* Point to next vpath handler */
2543 2544 2545
			if (((intr_idx + 1) % VXGE_HW_VPATH_MSIX_ACTIVE == 0) &&
			    (vp_idx < (vdev->no_of_vpath - 1)))
				vp_idx++;
2546 2547
		}

2548
		intr_cnt = vdev->no_of_vpath * 2;
2549
		snprintf(vdev->desc[intr_cnt], VXGE_INTR_STRLEN,
2550 2551 2552 2553
			"%s:vxge:MSI-X %d - Alarm - fn:%d",
			vdev->ndev->name,
			vdev->entries[intr_cnt].entry,
			pci_fun);
2554 2555 2556 2557
		/* For Alarm interrupts */
		ret = request_irq(vdev->entries[intr_cnt].vector,
					vxge_alarm_msix_handle, 0,
					vdev->desc[intr_cnt],
2558
					&vdev->vpaths[0]);
2559 2560 2561 2562 2563
		if (ret) {
			vxge_debug_init(VXGE_ERR,
				"%s: MSIX - %d Registration failed",
				vdev->ndev->name, intr_cnt);
			vxge_rem_msix_isr(vdev);
2564 2565 2566 2567
			vdev->config.intr_type = INTA;
			vxge_debug_init(VXGE_ERR,
				"%s: Defaulting to INTA",
				vdev->ndev->name);
2568 2569 2570
				goto INTA_MODE;
		}

2571 2572
		msix_idx = (vdev->vpaths[0].handle->vpath->vp_id *
			VXGE_HW_VPATH_MSIX_ACTIVE) + VXGE_ALARM_MSIX_ID;
2573
		vxge_hw_vpath_msix_unmask(vdev->vpaths[vp_idx].handle,
2574
					msix_idx);
2575
		vdev->vxge_entries[intr_cnt].in_use = 1;
2576
		vdev->vxge_entries[intr_cnt].arg = &vdev->vpaths[0];
2577 2578 2579 2580 2581
	}
INTA_MODE:
#endif

	if (vdev->config.intr_type == INTA) {
2582 2583
		snprintf(vdev->desc[0], VXGE_INTR_STRLEN,
			"%s:vxge:INTA", vdev->ndev->name);
2584 2585
		vxge_hw_device_set_intr_type(vdev->devh,
			VXGE_HW_INTR_MODE_IRQLINE);
J
Jon Mason 已提交
2586 2587 2588

		vxge_hw_vpath_tti_ci_set(vdev->vpaths[0].fifo.handle);

2589 2590
		ret = request_irq((int) vdev->pdev->irq,
			vxge_isr_napi,
S
Sreenivasa Honnur 已提交
2591
			IRQF_SHARED, vdev->desc[0], vdev);
2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628
		if (ret) {
			vxge_debug_init(VXGE_ERR,
				"%s %s-%d: ISR registration failed",
				VXGE_DRIVER_NAME, "IRQ", vdev->pdev->irq);
			return -ENODEV;
		}
		vxge_debug_init(VXGE_TRACE,
			"new %s-%d line allocated",
			"IRQ", vdev->pdev->irq);
	}

	return VXGE_HW_OK;
}

static void vxge_poll_vp_reset(unsigned long data)
{
	struct vxgedev *vdev = (struct vxgedev *)data;
	int i, j = 0;

	for (i = 0; i < vdev->no_of_vpath; i++) {
		if (test_bit(i, &vdev->vp_reset)) {
			vxge_reset_vpath(vdev, i);
			j++;
		}
	}
	if (j && (vdev->config.intr_type != MSI_X)) {
		vxge_hw_device_unmask_all(vdev->devh);
		vxge_hw_device_flush_io(vdev->devh);
	}

	mod_timer(&vdev->vp_reset_timer, jiffies + HZ / 2);
}

static void vxge_poll_vp_lockup(unsigned long data)
{
	struct vxgedev *vdev = (struct vxgedev *)data;
	enum vxge_hw_status status = VXGE_HW_OK;
J
Jon Mason 已提交
2629 2630 2631
	struct vxge_vpath *vpath;
	struct vxge_ring *ring;
	int i;
2632
	unsigned long rx_frms;
2633 2634 2635

	for (i = 0; i < vdev->no_of_vpath; i++) {
		ring = &vdev->vpaths[i].ring;
2636 2637 2638 2639

		/* Truncated to machine word size number of frames */
		rx_frms = ACCESS_ONCE(ring->stats.rx_frms);

2640
		/* Did this vpath received any packets */
2641
		if (ring->stats.prev_rx_frms == rx_frms) {
2642 2643 2644 2645 2646 2647 2648 2649
			status = vxge_hw_vpath_check_leak(ring->handle);

			/* Did it received any packets last time */
			if ((VXGE_HW_FAIL == status) &&
				(VXGE_HW_FAIL == ring->last_status)) {

				/* schedule vpath reset */
				if (!test_and_set_bit(i, &vdev->vp_reset)) {
J
Jon Mason 已提交
2650
					vpath = &vdev->vpaths[i];
2651 2652 2653 2654 2655

					/* disable interrupts for this vpath */
					vxge_vpath_intr_disable(vdev, i);

					/* stop the queue for this vpath */
J
Jon Mason 已提交
2656
					netif_tx_stop_queue(vpath->fifo.txq);
2657 2658 2659 2660
					continue;
				}
			}
		}
2661
		ring->stats.prev_rx_frms = rx_frms;
2662 2663 2664 2665 2666 2667 2668
		ring->last_status = status;
	}

	/* Check every 1 milli second */
	mod_timer(&vdev->vp_lockup_timer, jiffies + HZ / 1000);
}

2669 2670
static netdev_features_t vxge_fix_features(struct net_device *dev,
	netdev_features_t features)
2671
{
2672
	netdev_features_t changed = dev->features ^ features;
2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683

	/* Enabling RTH requires some of the logic in vxge_device_register and a
	 * vpath reset.  Due to these restrictions, only allow modification
	 * while the interface is down.
	 */
	if ((changed & NETIF_F_RXHASH) && netif_running(dev))
		features ^= NETIF_F_RXHASH;

	return features;
}

2684
static int vxge_set_features(struct net_device *dev, netdev_features_t features)
2685 2686
{
	struct vxgedev *vdev = netdev_priv(dev);
2687
	netdev_features_t changed = dev->features ^ features;
2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703

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

	/* !netif_running() ensured by vxge_fix_features() */

	vdev->devh->config.rth_en = !!(features & NETIF_F_RXHASH);
	if (vxge_reset_all_vpaths(vdev) != VXGE_HW_OK) {
		dev->features = features ^ NETIF_F_RXHASH;
		vdev->devh->config.rth_en = !!(dev->features & NETIF_F_RXHASH);
		return -EIO;
	}

	return 0;
}

2704 2705 2706 2707 2708 2709 2710 2711 2712 2713
/**
 * vxge_open
 * @dev: pointer to the device structure.
 *
 * This function is the open entry point of the driver. It mainly calls a
 * function to allocate Rx buffers and inserts them into the buffer
 * descriptors and then enables the Rx part of the NIC.
 * Return value: '0' on success and an appropriate (-)ve integer as
 * defined in errno.h file on failure.
 */
J
Jon Mason 已提交
2714
static int vxge_open(struct net_device *dev)
2715 2716 2717 2718
{
	enum vxge_hw_status status;
	struct vxgedev *vdev;
	struct __vxge_hw_device *hldev;
J
Jon Mason 已提交
2719
	struct vxge_vpath *vpath;
2720 2721 2722
	int ret = 0;
	int i;
	u64 val64, function_mode;
J
Jon Mason 已提交
2723

2724 2725 2726
	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d", dev->name, __func__, __LINE__);

2727
	vdev = netdev_priv(dev);
2728
	hldev = pci_get_drvdata(vdev->pdev);
2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757
	function_mode = vdev->config.device_hw_info.function_mode;

	/* make sure you have link off by default every time Nic is
	 * initialized */
	netif_carrier_off(dev);

	/* Open VPATHs */
	status = vxge_open_vpaths(vdev);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"%s: fatal: Vpath open failed", vdev->ndev->name);
		ret = -EPERM;
		goto out0;
	}

	vdev->mtu = dev->mtu;

	status = vxge_add_isr(vdev);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"%s: fatal: ISR add failed", dev->name);
		ret = -EPERM;
		goto out1;
	}

	if (vdev->config.intr_type != MSI_X) {
		netif_napi_add(dev, &vdev->napi, vxge_poll_inta,
			vdev->config.napi_weight);
		napi_enable(&vdev->napi);
J
Jon Mason 已提交
2758 2759 2760 2761
		for (i = 0; i < vdev->no_of_vpath; i++) {
			vpath = &vdev->vpaths[i];
			vpath->ring.napi_p = &vdev->napi;
		}
2762 2763
	} else {
		for (i = 0; i < vdev->no_of_vpath; i++) {
J
Jon Mason 已提交
2764 2765
			vpath = &vdev->vpaths[i];
			netif_napi_add(dev, &vpath->ring.napi,
2766
			    vxge_poll_msix, vdev->config.napi_weight);
J
Jon Mason 已提交
2767 2768
			napi_enable(&vpath->ring.napi);
			vpath->ring.napi_p = &vpath->ring.napi;
2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782
		}
	}

	/* configure RTH */
	if (vdev->config.rth_steering) {
		status = vxge_rth_configure(vdev);
		if (status != VXGE_HW_OK) {
			vxge_debug_init(VXGE_ERR,
				"%s: fatal: RTH configuration failed",
				dev->name);
			ret = -EPERM;
			goto out2;
		}
	}
J
Jon Mason 已提交
2783 2784
	printk(KERN_INFO "%s: Receive Hashing Offload %s\n", dev->name,
	       hldev->config.rth_en ? "enabled" : "disabled");
2785 2786

	for (i = 0; i < vdev->no_of_vpath; i++) {
J
Jon Mason 已提交
2787 2788
		vpath = &vdev->vpaths[i];

2789
		/* set initial mtu before enabling the device */
J
Jon Mason 已提交
2790
		status = vxge_hw_vpath_mtu_set(vpath->handle, vdev->mtu);
2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803
		if (status != VXGE_HW_OK) {
			vxge_debug_init(VXGE_ERR,
				"%s: fatal: can not set new MTU", dev->name);
			ret = -EPERM;
			goto out2;
		}
	}

	VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_TRACE, VXGE_COMPONENT_LL, vdev);
	vxge_debug_init(vdev->level_trace,
		"%s: MTU is %d", vdev->ndev->name, vdev->mtu);
	VXGE_DEVICE_DEBUG_LEVEL_SET(VXGE_ERR, VXGE_COMPONENT_LL, vdev);

J
Jon Mason 已提交
2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818
	/* Restore the DA, VID table and also multicast and promiscuous mode
	 * states
	 */
	if (vdev->all_multi_flg) {
		for (i = 0; i < vdev->no_of_vpath; i++) {
			vpath = &vdev->vpaths[i];
			vxge_restore_vpath_mac_addr(vpath);
			vxge_restore_vpath_vid_table(vpath);

			status = vxge_hw_vpath_mcast_enable(vpath->handle);
			if (status != VXGE_HW_OK)
				vxge_debug_init(VXGE_ERR,
					"%s:%d Enabling multicast failed",
					__func__, __LINE__);
		}
2819 2820 2821
	}

	/* Enable vpath to sniff all unicast/multicast traffic that not
L
Lucas De Marchi 已提交
2822
	 * addressed to them. We allow promiscuous mode for PF only
2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846
	 */

	val64 = 0;
	for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
		val64 |= VXGE_HW_RXMAC_AUTHORIZE_ALL_ADDR_VP(i);

	vxge_hw_mgmt_reg_write(vdev->devh,
		vxge_hw_mgmt_reg_type_mrpcim,
		0,
		(ulong)offsetof(struct vxge_hw_mrpcim_reg,
			rxmac_authorize_all_addr),
		val64);

	vxge_hw_mgmt_reg_write(vdev->devh,
		vxge_hw_mgmt_reg_type_mrpcim,
		0,
		(ulong)offsetof(struct vxge_hw_mrpcim_reg,
			rxmac_authorize_all_vid),
		val64);

	vxge_set_multicast(dev);

	/* Enabling Bcast and mcast for all vpath */
	for (i = 0; i < vdev->no_of_vpath; i++) {
J
Jon Mason 已提交
2847 2848
		vpath = &vdev->vpaths[i];
		status = vxge_hw_vpath_bcast_enable(vpath->handle);
2849 2850 2851 2852 2853
		if (status != VXGE_HW_OK)
			vxge_debug_init(VXGE_ERR,
				"%s : Can not enable bcast for vpath "
				"id %d", dev->name, i);
		if (vdev->config.addr_learn_en) {
J
Jon Mason 已提交
2854
			status = vxge_hw_vpath_mcast_enable(vpath->handle);
2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866
			if (status != VXGE_HW_OK)
				vxge_debug_init(VXGE_ERR,
					"%s : Can not enable mcast for vpath "
					"id %d", dev->name, i);
		}
	}

	vxge_hw_device_setpause_data(vdev->devh, 0,
		vdev->config.tx_pause_enable,
		vdev->config.rx_pause_enable);

	if (vdev->vp_reset_timer.function == NULL)
2867 2868
		vxge_os_timer(&vdev->vp_reset_timer, vxge_poll_vp_reset, vdev,
			      HZ / 2);
2869

J
Jon Mason 已提交
2870 2871
	/* There is no need to check for RxD leak and RxD lookup on Titan1A */
	if (vdev->titan1 && vdev->vp_lockup_timer.function == NULL)
2872
		vxge_os_timer(&vdev->vp_lockup_timer, vxge_poll_vp_lockup, vdev,
J
Jon Mason 已提交
2873
			      HZ / 2);
2874 2875 2876 2877 2878 2879 2880

	set_bit(__VXGE_STATE_CARD_UP, &vdev->state);

	smp_wmb();

	if (vxge_hw_device_link_state_get(vdev->devh) == VXGE_HW_LINK_UP) {
		netif_carrier_on(vdev->ndev);
2881
		netdev_notice(vdev->ndev, "Link Up\n");
2882 2883 2884 2885 2886 2887 2888 2889
		vdev->stats.link_up++;
	}

	vxge_hw_device_intr_enable(vdev->devh);

	smp_wmb();

	for (i = 0; i < vdev->no_of_vpath; i++) {
J
Jon Mason 已提交
2890 2891 2892
		vpath = &vdev->vpaths[i];

		vxge_hw_vpath_enable(vpath->handle);
2893
		smp_wmb();
J
Jon Mason 已提交
2894
		vxge_hw_vpath_rx_doorbell_init(vpath->handle);
2895 2896
	}

J
Jon Mason 已提交
2897
	netif_tx_start_all_queues(vdev->ndev);
J
Jon Mason 已提交
2898 2899 2900 2901

	/* configure CI */
	vxge_config_ci_for_tti_rti(vdev);

2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923
	goto out0;

out2:
	vxge_rem_isr(vdev);

	/* Disable napi */
	if (vdev->config.intr_type != MSI_X)
		napi_disable(&vdev->napi);
	else {
		for (i = 0; i < vdev->no_of_vpath; i++)
			napi_disable(&vdev->vpaths[i].ring.napi);
	}

out1:
	vxge_close_vpaths(vdev, 0);
out0:
	vxge_debug_entryexit(VXGE_TRACE,
				"%s: %s:%d  Exiting...",
				dev->name, __func__, __LINE__);
	return ret;
}

L
Lucas De Marchi 已提交
2924
/* Loop through the mac address list and delete all the entries */
2925
static void vxge_free_mac_add_list(struct vxge_vpath *vpath)
2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948
{

	struct list_head *entry, *next;
	if (list_empty(&vpath->mac_addr_list))
		return;

	list_for_each_safe(entry, next, &vpath->mac_addr_list) {
		list_del(entry);
		kfree((struct vxge_mac_addrs *)entry);
	}
}

static void vxge_napi_del_all(struct vxgedev *vdev)
{
	int i;
	if (vdev->config.intr_type != MSI_X)
		netif_napi_del(&vdev->napi);
	else {
		for (i = 0; i < vdev->no_of_vpath; i++)
			netif_napi_del(&vdev->vpaths[i].ring.napi);
	}
}

2949
static int do_vxge_close(struct net_device *dev, int do_io)
2950 2951 2952 2953 2954 2955 2956 2957 2958
{
	enum vxge_hw_status status;
	struct vxgedev *vdev;
	struct __vxge_hw_device *hldev;
	int i;
	u64 val64, vpath_vector;
	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d",
		dev->name, __func__, __LINE__);

2959
	vdev = netdev_priv(dev);
2960
	hldev = pci_get_drvdata(vdev->pdev);
2961

2962 2963 2964
	if (unlikely(!is_vxge_card_up(vdev)))
		return 0;

2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990
	/* If vxge_handle_crit_err task is executing,
	 * wait till it completes. */
	while (test_and_set_bit(__VXGE_STATE_RESET_CARD, &vdev->state))
		msleep(50);

	if (do_io) {
		/* Put the vpath back in normal mode */
		vpath_vector = vxge_mBIT(vdev->vpaths[0].device_id);
		status = vxge_hw_mgmt_reg_read(vdev->devh,
				vxge_hw_mgmt_reg_type_mrpcim,
				0,
				(ulong)offsetof(
					struct vxge_hw_mrpcim_reg,
					rts_mgr_cbasin_cfg),
				&val64);
		if (status == VXGE_HW_OK) {
			val64 &= ~vpath_vector;
			status = vxge_hw_mgmt_reg_write(vdev->devh,
					vxge_hw_mgmt_reg_type_mrpcim,
					0,
					(ulong)offsetof(
						struct vxge_hw_mrpcim_reg,
						rts_mgr_cbasin_cfg),
					val64);
		}

L
Lucas De Marchi 已提交
2991
		/* Remove the function 0 from promiscuous mode */
2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007
		vxge_hw_mgmt_reg_write(vdev->devh,
			vxge_hw_mgmt_reg_type_mrpcim,
			0,
			(ulong)offsetof(struct vxge_hw_mrpcim_reg,
				rxmac_authorize_all_addr),
			0);

		vxge_hw_mgmt_reg_write(vdev->devh,
			vxge_hw_mgmt_reg_type_mrpcim,
			0,
			(ulong)offsetof(struct vxge_hw_mrpcim_reg,
				rxmac_authorize_all_vid),
			0);

		smp_wmb();
	}
J
Jon Mason 已提交
3008 3009 3010

	if (vdev->titan1)
		del_timer_sync(&vdev->vp_lockup_timer);
3011 3012 3013

	del_timer_sync(&vdev->vp_reset_timer);

3014 3015 3016 3017 3018
	if (do_io)
		vxge_hw_device_wait_receive_idle(hldev);

	clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);

3019 3020 3021 3022 3023 3024 3025 3026 3027
	/* Disable napi */
	if (vdev->config.intr_type != MSI_X)
		napi_disable(&vdev->napi);
	else {
		for (i = 0; i < vdev->no_of_vpath; i++)
			napi_disable(&vdev->vpaths[i].ring.napi);
	}

	netif_carrier_off(vdev->ndev);
3028
	netdev_notice(vdev->ndev, "Link Down\n");
J
Jon Mason 已提交
3029
	netif_tx_stop_all_queues(vdev->ndev);
3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062

	/* Note that at this point xmit() is stopped by upper layer */
	if (do_io)
		vxge_hw_device_intr_disable(vdev->devh);

	vxge_rem_isr(vdev);

	vxge_napi_del_all(vdev);

	if (do_io)
		vxge_reset_all_vpaths(vdev);

	vxge_close_vpaths(vdev, 0);

	vxge_debug_entryexit(VXGE_TRACE,
		"%s: %s:%d  Exiting...", dev->name, __func__, __LINE__);

	clear_bit(__VXGE_STATE_RESET_CARD, &vdev->state);

	return 0;
}

/**
 * vxge_close
 * @dev: device pointer.
 *
 * This is the stop entry point of the driver. It needs to undo exactly
 * whatever was done by the open entry point, thus it's usually referred to
 * as the close function.Among other things this function mainly stops the
 * Rx side of the NIC and frees all the Rx buffers in the Rx rings.
 * Return value: '0' on success and an appropriate (-)ve integer as
 * defined in errno.h file on failure.
 */
J
Jon Mason 已提交
3063
static int vxge_close(struct net_device *dev)
3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119
{
	do_vxge_close(dev, 1);
	return 0;
}

/**
 * vxge_change_mtu
 * @dev: net device pointer.
 * @new_mtu :the new MTU size for the device.
 *
 * A driver entry point to change MTU size for the device. Before changing
 * the MTU the device must be stopped.
 */
static int vxge_change_mtu(struct net_device *dev, int new_mtu)
{
	struct vxgedev *vdev = netdev_priv(dev);

	vxge_debug_entryexit(vdev->level_trace,
		"%s:%d", __func__, __LINE__);
	if ((new_mtu < VXGE_HW_MIN_MTU) || (new_mtu > VXGE_HW_MAX_MTU)) {
		vxge_debug_init(vdev->level_err,
			"%s: mtu size is invalid", dev->name);
		return -EPERM;
	}

	/* check if device is down already */
	if (unlikely(!is_vxge_card_up(vdev))) {
		/* just store new value, will use later on open() */
		dev->mtu = new_mtu;
		vxge_debug_init(vdev->level_err,
			"%s", "device is down on MTU change");
		return 0;
	}

	vxge_debug_init(vdev->level_trace,
		"trying to apply new MTU %d", new_mtu);

	if (vxge_close(dev))
		return -EIO;

	dev->mtu = new_mtu;
	vdev->mtu = new_mtu;

	if (vxge_open(dev))
		return -EIO;

	vxge_debug_init(vdev->level_trace,
		"%s: MTU changed to %d", vdev->ndev->name, new_mtu);

	vxge_debug_entryexit(vdev->level_trace,
		"%s:%d  Exiting...", __func__, __LINE__);

	return 0;
}

/**
E
Eric Dumazet 已提交
3120
 * vxge_get_stats64
3121
 * @dev: pointer to the device structure
E
Eric Dumazet 已提交
3122
 * @stats: pointer to struct rtnl_link_stats64
3123 3124
 *
 */
E
Eric Dumazet 已提交
3125 3126
static struct rtnl_link_stats64 *
vxge_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *net_stats)
3127
{
E
Eric Dumazet 已提交
3128
	struct vxgedev *vdev = netdev_priv(dev);
3129 3130
	int k;

E
Eric Dumazet 已提交
3131
	/* net_stats already zeroed by caller */
3132
	for (k = 0; k < vdev->no_of_vpath; k++) {
3133 3134 3135 3136 3137 3138
		struct vxge_ring_stats *rxstats = &vdev->vpaths[k].ring.stats;
		struct vxge_fifo_stats *txstats = &vdev->vpaths[k].fifo.stats;
		unsigned int start;
		u64 packets, bytes, multicast;

		do {
3139
			start = u64_stats_fetch_begin_bh(&rxstats->syncp);
3140 3141 3142 3143

			packets   = rxstats->rx_frms;
			multicast = rxstats->rx_mcast;
			bytes     = rxstats->rx_bytes;
3144
		} while (u64_stats_fetch_retry_bh(&rxstats->syncp, start));
3145 3146 3147 3148 3149 3150 3151 3152 3153

		net_stats->rx_packets += packets;
		net_stats->rx_bytes += bytes;
		net_stats->multicast += multicast;

		net_stats->rx_errors += rxstats->rx_errors;
		net_stats->rx_dropped += rxstats->rx_dropped;

		do {
3154
			start = u64_stats_fetch_begin_bh(&txstats->syncp);
3155 3156 3157

			packets = txstats->tx_frms;
			bytes   = txstats->tx_bytes;
3158
		} while (u64_stats_fetch_retry_bh(&txstats->syncp, start));
3159 3160 3161 3162

		net_stats->tx_packets += packets;
		net_stats->tx_bytes += bytes;
		net_stats->tx_errors += txstats->tx_errors;
3163 3164 3165 3166 3167
	}

	return net_stats;
}

3168
static enum vxge_hw_status vxge_timestamp_config(struct __vxge_hw_device *devh)
3169 3170 3171 3172 3173 3174 3175 3176 3177
{
	enum vxge_hw_status status;
	u64 val64;

	/* Timestamp is passed to the driver via the FCS, therefore we
	 * must disable the FCS stripping by the adapter.  Since this is
	 * required for the driver to load (due to a hardware bug),
	 * there is no need to do anything special here.
	 */
3178 3179 3180
	val64 = VXGE_HW_XMAC_TIMESTAMP_EN |
		VXGE_HW_XMAC_TIMESTAMP_USE_LINK_ID(0) |
		VXGE_HW_XMAC_TIMESTAMP_INTERVAL(0);
3181

3182
	status = vxge_hw_mgmt_reg_write(devh,
3183 3184 3185 3186 3187
					vxge_hw_mgmt_reg_type_mrpcim,
					0,
					offsetof(struct vxge_hw_mrpcim_reg,
						 xmac_timestamp),
					val64);
3188 3189
	vxge_hw_device_flush_io(devh);
	devh->config.hwts_en = VXGE_HW_HWTS_ENABLE;
3190 3191 3192
	return status;
}

3193
static int vxge_hwtstamp_set(struct vxgedev *vdev, void __user *data)
3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233
{
	struct hwtstamp_config config;
	int i;

	if (copy_from_user(&config, data, sizeof(config)))
		return -EFAULT;

	/* reserved for future extensions */
	if (config.flags)
		return -EINVAL;

	/* Transmit HW Timestamp not supported */
	switch (config.tx_type) {
	case HWTSTAMP_TX_OFF:
		break;
	case HWTSTAMP_TX_ON:
	default:
		return -ERANGE;
	}

	switch (config.rx_filter) {
	case HWTSTAMP_FILTER_NONE:
		vdev->rx_hwts = 0;
		config.rx_filter = HWTSTAMP_FILTER_NONE;
		break;

	case HWTSTAMP_FILTER_ALL:
	case HWTSTAMP_FILTER_SOME:
	case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
	case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
	case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
	case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
	case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
	case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
	case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
	case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
	case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
	case HWTSTAMP_FILTER_PTP_V2_EVENT:
	case HWTSTAMP_FILTER_PTP_V2_SYNC:
	case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
3234
		if (vdev->devh->config.hwts_en != VXGE_HW_HWTS_ENABLE)
3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253
			return -EFAULT;

		vdev->rx_hwts = 1;
		config.rx_filter = HWTSTAMP_FILTER_ALL;
		break;

	default:
		 return -ERANGE;
	}

	for (i = 0; i < vdev->no_of_vpath; i++)
		vdev->vpaths[i].ring.rx_hwts = vdev->rx_hwts;

	if (copy_to_user(data, &config, sizeof(config)))
		return -EFAULT;

	return 0;
}

3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268
static int vxge_hwtstamp_get(struct vxgedev *vdev, void __user *data)
{
	struct hwtstamp_config config;

	config.flags = 0;
	config.tx_type = HWTSTAMP_TX_OFF;
	config.rx_filter = (vdev->rx_hwts ?
			    HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE);

	if (copy_to_user(data, &config, sizeof(config)))
		return -EFAULT;

	return 0;
}

3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280
/**
 * vxge_ioctl
 * @dev: Device pointer.
 * @ifr: An IOCTL specific structure, that can contain a pointer to
 *       a proprietary structure used to pass information to the driver.
 * @cmd: This is used to distinguish between the different commands that
 *       can be passed to the IOCTL functions.
 *
 * Entry point for the Ioctl.
 */
static int vxge_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
3281 3282 3283 3284
	struct vxgedev *vdev = netdev_priv(dev);

	switch (cmd) {
	case SIOCSHWTSTAMP:
3285 3286 3287
		return vxge_hwtstamp_set(vdev, rq->ifr_data);
	case SIOCGHWTSTAMP:
		return vxge_hwtstamp_get(vdev, rq->ifr_data);
3288 3289 3290
	default:
		return -EOPNOTSUPP;
	}
3291 3292 3293 3294 3295 3296 3297 3298 3299 3300
}

/**
 * vxge_tx_watchdog
 * @dev: pointer to net device structure
 *
 * Watchdog for transmit side.
 * This function is triggered if the Tx Queue is stopped
 * for a pre-defined amount of time when the Interface is still up.
 */
J
Jon Mason 已提交
3301
static void vxge_tx_watchdog(struct net_device *dev)
3302 3303 3304 3305 3306
{
	struct vxgedev *vdev;

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);

3307
	vdev = netdev_priv(dev);
3308 3309 3310

	vdev->cric_err_event = VXGE_HW_EVENT_RESET_START;

J
Jon Mason 已提交
3311
	schedule_work(&vdev->reset_task);
3312 3313 3314 3315 3316 3317 3318
	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d  Exiting...", __func__, __LINE__);
}

/**
 * vxge_vlan_rx_add_vid
 * @dev: net device pointer.
3319
 * @proto: vlan protocol
3320 3321 3322 3323
 * @vid: vid
 *
 * Add the vlan id to the devices vlan id table
 */
3324
static int
3325
vxge_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
3326
{
J
Jiri Pirko 已提交
3327
	struct vxgedev *vdev = netdev_priv(dev);
3328 3329 3330 3331 3332 3333 3334 3335 3336 3337
	struct vxge_vpath *vpath;
	int vp_id;

	/* Add these vlan to the vid table */
	for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
		vpath = &vdev->vpaths[vp_id];
		if (!vpath->is_open)
			continue;
		vxge_hw_vpath_vid_add(vpath->handle, vid);
	}
J
Jiri Pirko 已提交
3338
	set_bit(vid, vdev->active_vlans);
3339
	return 0;
3340 3341 3342
}

/**
3343
 * vxge_vlan_rx_kill_vid
3344
 * @dev: net device pointer.
3345
 * @proto: vlan protocol
3346 3347 3348 3349
 * @vid: vid
 *
 * Remove the vlan id from the device's vlan id table
 */
3350
static int
3351
vxge_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
3352
{
J
Jiri Pirko 已提交
3353
	struct vxgedev *vdev = netdev_priv(dev);
3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367
	struct vxge_vpath *vpath;
	int vp_id;

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);

	/* Delete this vlan from the vid table */
	for (vp_id = 0; vp_id < vdev->no_of_vpath; vp_id++) {
		vpath = &vdev->vpaths[vp_id];
		if (!vpath->is_open)
			continue;
		vxge_hw_vpath_vid_delete(vpath->handle, vid);
	}
	vxge_debug_entryexit(VXGE_TRACE,
		"%s:%d  Exiting...", __func__, __LINE__);
J
Jiri Pirko 已提交
3368
	clear_bit(vid, vdev->active_vlans);
3369
	return 0;
3370 3371 3372 3373 3374
}

static const struct net_device_ops vxge_netdev_ops = {
	.ndo_open               = vxge_open,
	.ndo_stop               = vxge_close,
E
Eric Dumazet 已提交
3375
	.ndo_get_stats64        = vxge_get_stats64,
3376 3377
	.ndo_start_xmit         = vxge_xmit,
	.ndo_validate_addr      = eth_validate_addr,
3378
	.ndo_set_rx_mode	= vxge_set_multicast,
3379 3380 3381
	.ndo_do_ioctl           = vxge_ioctl,
	.ndo_set_mac_address    = vxge_set_mac_addr,
	.ndo_change_mtu         = vxge_change_mtu,
3382 3383
	.ndo_fix_features	= vxge_fix_features,
	.ndo_set_features	= vxge_set_features,
3384 3385 3386 3387 3388 3389 3390 3391
	.ndo_vlan_rx_kill_vid   = vxge_vlan_rx_kill_vid,
	.ndo_vlan_rx_add_vid	= vxge_vlan_rx_add_vid,
	.ndo_tx_timeout         = vxge_tx_watchdog,
#ifdef CONFIG_NET_POLL_CONTROLLER
	.ndo_poll_controller    = vxge_netpoll,
#endif
};

3392
static int vxge_device_register(struct __vxge_hw_device *hldev,
3393 3394
				struct vxge_config *config, int high_dma,
				int no_of_vpath, struct vxgedev **vdev_out)
3395 3396 3397 3398
{
	struct net_device *ndev;
	enum vxge_hw_status status = VXGE_HW_OK;
	struct vxgedev *vdev;
J
Jon Mason 已提交
3399
	int ret = 0, no_of_queue = 1;
3400 3401 3402
	u64 stat;

	*vdev_out = NULL;
J
Jon Mason 已提交
3403
	if (config->tx_steering_type)
3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427
		no_of_queue = no_of_vpath;

	ndev = alloc_etherdev_mq(sizeof(struct vxgedev),
			no_of_queue);
	if (ndev == NULL) {
		vxge_debug_init(
			vxge_hw_device_trace_level_get(hldev),
		"%s : device allocation failed", __func__);
		ret = -ENODEV;
		goto _out0;
	}

	vxge_debug_entryexit(
		vxge_hw_device_trace_level_get(hldev),
		"%s: %s:%d  Entering...",
		ndev->name, __func__, __LINE__);

	vdev = netdev_priv(ndev);
	memset(vdev, 0, sizeof(struct vxgedev));

	vdev->ndev = ndev;
	vdev->devh = hldev;
	vdev->pdev = hldev->pdev;
	memcpy(&vdev->config, config, sizeof(struct vxge_config));
3428
	vdev->rx_hwts = 0;
3429
	vdev->titan1 = (vdev->pdev->revision == VXGE_HW_TITAN1_PCI_REVISION);
J
Jon Mason 已提交
3430

3431 3432
	SET_NETDEV_DEV(ndev, &vdev->pdev->dev);

3433 3434 3435
	ndev->hw_features = NETIF_F_RXCSUM | NETIF_F_SG |
		NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
		NETIF_F_TSO | NETIF_F_TSO6 |
3436
		NETIF_F_HW_VLAN_CTAG_TX;
3437 3438 3439 3440
	if (vdev->config.rth_steering != NO_STEERING)
		ndev->hw_features |= NETIF_F_RXHASH;

	ndev->features |= ndev->hw_features |
3441
		NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER;
3442

3443 3444 3445 3446

	ndev->netdev_ops = &vxge_netdev_ops;

	ndev->watchdog_timeo = VXGE_LL_WATCH_DOG_TIMEOUT;
J
Jon Mason 已提交
3447
	INIT_WORK(&vdev->reset_task, vxge_reset);
3448

3449
	vxge_initialize_ethtool_ops(ndev);
3450 3451 3452 3453 3454 3455 3456 3457

	/* Allocate memory for vpath */
	vdev->vpaths = kzalloc((sizeof(struct vxge_vpath)) *
				no_of_vpath, GFP_KERNEL);
	if (!vdev->vpaths) {
		vxge_debug_init(VXGE_ERR,
			"%s: vpath memory allocation failed",
			vdev->ndev->name);
J
Jon Mason 已提交
3458
		ret = -ENOMEM;
3459 3460 3461 3462
		goto _out1;
	}

	vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
M
Masanari Iida 已提交
3463
		"%s : checksumming enabled", __func__);
3464 3465 3466 3467 3468 3469 3470

	if (high_dma) {
		ndev->features |= NETIF_F_HIGHDMA;
		vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
			"%s : using High DMA", __func__);
	}

J
Jon Mason 已提交
3471 3472
	ret = register_netdev(ndev);
	if (ret) {
3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491
		vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
			"%s: %s : device registration failed!",
			ndev->name, __func__);
		goto _out2;
	}

	/*  Set the factory defined MAC address initially */
	ndev->addr_len = ETH_ALEN;

	/* Make Link state as off at this point, when the Link change
	 * interrupt comes the state will be automatically changed to
	 * the right state.
	 */
	netif_carrier_off(ndev);

	vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
		"%s: Ethernet device registered",
		ndev->name);

3492
	hldev->ndev = ndev;
3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526
	*vdev_out = vdev;

	/* Resetting the Device stats */
	status = vxge_hw_mrpcim_stats_access(
				hldev,
				VXGE_HW_STATS_OP_CLEAR_ALL_STATS,
				0,
				0,
				&stat);

	if (status == VXGE_HW_ERR_PRIVILAGED_OPEARATION)
		vxge_debug_init(
			vxge_hw_device_trace_level_get(hldev),
			"%s: device stats clear returns"
			"VXGE_HW_ERR_PRIVILAGED_OPEARATION", ndev->name);

	vxge_debug_entryexit(vxge_hw_device_trace_level_get(hldev),
		"%s: %s:%d  Exiting...",
		ndev->name, __func__, __LINE__);

	return ret;
_out2:
	kfree(vdev->vpaths);
_out1:
	free_netdev(ndev);
_out0:
	return ret;
}

/*
 * vxge_device_unregister
 *
 * This function will unregister and free network device
 */
J
Jon Mason 已提交
3527
static void vxge_device_unregister(struct __vxge_hw_device *hldev)
3528 3529 3530 3531 3532 3533 3534 3535
{
	struct vxgedev *vdev;
	struct net_device *dev;
	char buf[IFNAMSIZ];

	dev = hldev->ndev;
	vdev = netdev_priv(dev);

J
Jon Mason 已提交
3536 3537 3538
	vxge_debug_entryexit(vdev->level_trace,	"%s: %s:%d", vdev->ndev->name,
			     __func__, __LINE__);

J
Jon Mason 已提交
3539
	strncpy(buf, dev->name, IFNAMSIZ);
3540

3541
	flush_work(&vdev->reset_task);
T
Tejun Heo 已提交
3542

3543 3544 3545
	/* in 2.6 will call stop() if device is up */
	unregister_netdev(dev);

J
Jon Mason 已提交
3546 3547 3548 3549 3550
	kfree(vdev->vpaths);

	/* we are safe to free it now */
	free_netdev(dev);

J
Jon Mason 已提交
3551 3552 3553 3554
	vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered",
			buf);
	vxge_debug_entryexit(vdev->level_trace,	"%s: %s:%d  Exiting...", buf,
			     __func__, __LINE__);
3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567
}

/*
 * vxge_callback_crit_err
 *
 * This function is called by the alarm handler in interrupt context.
 * Driver must analyze it based on the event type.
 */
static void
vxge_callback_crit_err(struct __vxge_hw_device *hldev,
			enum vxge_hw_event type, u64 vp_id)
{
	struct net_device *dev = hldev->ndev;
3568
	struct vxgedev *vdev = netdev_priv(dev);
J
Jon Mason 已提交
3569
	struct vxge_vpath *vpath = NULL;
3570 3571 3572 3573 3574 3575 3576 3577 3578 3579
	int vpath_idx;

	vxge_debug_entryexit(vdev->level_trace,
		"%s: %s:%d", vdev->ndev->name, __func__, __LINE__);

	/* Note: This event type should be used for device wide
	 * indications only - Serious errors, Slot freeze and critical errors
	 */
	vdev->cric_err_event = type;

J
Jon Mason 已提交
3580 3581 3582
	for (vpath_idx = 0; vpath_idx < vdev->no_of_vpath; vpath_idx++) {
		vpath = &vdev->vpaths[vpath_idx];
		if (vpath->device_id == vp_id)
3583
			break;
J
Jon Mason 已提交
3584
	}
3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620

	if (!test_bit(__VXGE_STATE_RESET_CARD, &vdev->state)) {
		if (type == VXGE_HW_EVENT_SLOT_FREEZE) {
			vxge_debug_init(VXGE_ERR,
				"%s: Slot is frozen", vdev->ndev->name);
		} else if (type == VXGE_HW_EVENT_SERR) {
			vxge_debug_init(VXGE_ERR,
				"%s: Encountered Serious Error",
				vdev->ndev->name);
		} else if (type == VXGE_HW_EVENT_CRITICAL_ERR)
			vxge_debug_init(VXGE_ERR,
				"%s: Encountered Critical Error",
				vdev->ndev->name);
	}

	if ((type == VXGE_HW_EVENT_SERR) ||
		(type == VXGE_HW_EVENT_SLOT_FREEZE)) {
		if (unlikely(vdev->exec_mode))
			clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
	} else if (type == VXGE_HW_EVENT_CRITICAL_ERR) {
		vxge_hw_device_mask_all(hldev);
		if (unlikely(vdev->exec_mode))
			clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
	} else if ((type == VXGE_HW_EVENT_FIFO_ERR) ||
		  (type == VXGE_HW_EVENT_VPATH_ERR)) {

		if (unlikely(vdev->exec_mode))
			clear_bit(__VXGE_STATE_CARD_UP, &vdev->state);
		else {
			/* check if this vpath is already set for reset */
			if (!test_and_set_bit(vpath_idx, &vdev->vp_reset)) {

				/* disable interrupts for this vpath */
				vxge_vpath_intr_disable(vdev, vpath_idx);

				/* stop the queue for this vpath */
J
Jon Mason 已提交
3621
				netif_tx_stop_queue(vpath->fifo.txq);
3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691
			}
		}
	}

	vxge_debug_entryexit(vdev->level_trace,
		"%s: %s:%d  Exiting...",
		vdev->ndev->name, __func__, __LINE__);
}

static void verify_bandwidth(void)
{
	int i, band_width, total = 0, equal_priority = 0;

	/* 1. If user enters 0 for some fifo, give equal priority to all */
	for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
		if (bw_percentage[i] == 0) {
			equal_priority = 1;
			break;
		}
	}

	if (!equal_priority) {
		/* 2. If sum exceeds 100, give equal priority to all */
		for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
			if (bw_percentage[i] == 0xFF)
				break;

			total += bw_percentage[i];
			if (total > VXGE_HW_VPATH_BANDWIDTH_MAX) {
				equal_priority = 1;
				break;
			}
		}
	}

	if (!equal_priority) {
		/* Is all the bandwidth consumed? */
		if (total < VXGE_HW_VPATH_BANDWIDTH_MAX) {
			if (i < VXGE_HW_MAX_VIRTUAL_PATHS) {
				/* Split rest of bw equally among next VPs*/
				band_width =
				  (VXGE_HW_VPATH_BANDWIDTH_MAX  - total) /
					(VXGE_HW_MAX_VIRTUAL_PATHS - i);
				if (band_width < 2) /* min of 2% */
					equal_priority = 1;
				else {
					for (; i < VXGE_HW_MAX_VIRTUAL_PATHS;
						i++)
						bw_percentage[i] =
							band_width;
				}
			}
		} else if (i < VXGE_HW_MAX_VIRTUAL_PATHS)
			equal_priority = 1;
	}

	if (equal_priority) {
		vxge_debug_init(VXGE_ERR,
			"%s: Assigning equal bandwidth to all the vpaths",
			VXGE_DRIVER_NAME);
		bw_percentage[0] = VXGE_HW_VPATH_BANDWIDTH_MAX /
					VXGE_HW_MAX_VIRTUAL_PATHS;
		for (i = 1; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
			bw_percentage[i] = bw_percentage[0];
	}
}

/*
 * Vpath configuration
 */
3692 3693
static int vxge_config_vpaths(struct vxge_hw_device_config *device_config,
			      u64 vpath_mask, struct vxge_config *config_param)
3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705
{
	int i, no_of_vpaths = 0, default_no_vpath = 0, temp;
	u32 txdl_size, txdl_per_memblock;

	temp = driver_config->vpath_per_dev;
	if ((driver_config->vpath_per_dev == VXGE_USE_DEFAULT) &&
		(max_config_dev == VXGE_MAX_CONFIG_DEV)) {
		/* No more CPU. Return vpath number as zero.*/
		if (driver_config->g_no_cpus == -1)
			return 0;

		if (!driver_config->g_no_cpus)
3706 3707
			driver_config->g_no_cpus =
				netif_get_num_default_rss_queues();
3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766

		driver_config->vpath_per_dev = driver_config->g_no_cpus >> 1;
		if (!driver_config->vpath_per_dev)
			driver_config->vpath_per_dev = 1;

		for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
			if (!vxge_bVALn(vpath_mask, i, 1))
				continue;
			else
				default_no_vpath++;
		if (default_no_vpath < driver_config->vpath_per_dev)
			driver_config->vpath_per_dev = default_no_vpath;

		driver_config->g_no_cpus = driver_config->g_no_cpus -
				(driver_config->vpath_per_dev * 2);
		if (driver_config->g_no_cpus <= 0)
			driver_config->g_no_cpus = -1;
	}

	if (driver_config->vpath_per_dev == 1) {
		vxge_debug_ll_config(VXGE_TRACE,
			"%s: Disable tx and rx steering, "
			"as single vpath is configured", VXGE_DRIVER_NAME);
		config_param->rth_steering = NO_STEERING;
		config_param->tx_steering_type = NO_STEERING;
		device_config->rth_en = 0;
	}

	/* configure bandwidth */
	for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++)
		device_config->vp_config[i].min_bandwidth = bw_percentage[i];

	for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
		device_config->vp_config[i].vp_id = i;
		device_config->vp_config[i].mtu = VXGE_HW_DEFAULT_MTU;
		if (no_of_vpaths < driver_config->vpath_per_dev) {
			if (!vxge_bVALn(vpath_mask, i, 1)) {
				vxge_debug_ll_config(VXGE_TRACE,
					"%s: vpath: %d is not available",
					VXGE_DRIVER_NAME, i);
				continue;
			} else {
				vxge_debug_ll_config(VXGE_TRACE,
					"%s: vpath: %d available",
					VXGE_DRIVER_NAME, i);
				no_of_vpaths++;
			}
		} else {
			vxge_debug_ll_config(VXGE_TRACE,
				"%s: vpath: %d is not configured, "
				"max_config_vpath exceeded",
				VXGE_DRIVER_NAME, i);
			break;
		}

		/* Configure Tx fifo's */
		device_config->vp_config[i].fifo.enable =
						VXGE_HW_FIFO_ENABLE;
		device_config->vp_config[i].fifo.max_frags =
3767
				MAX_SKB_FRAGS + 1;
3768 3769 3770
		device_config->vp_config[i].fifo.memblock_size =
			VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE;

3771 3772
		txdl_size = device_config->vp_config[i].fifo.max_frags *
				sizeof(struct vxge_hw_fifo_txd);
3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790
		txdl_per_memblock = VXGE_HW_MIN_FIFO_MEMBLOCK_SIZE / txdl_size;

		device_config->vp_config[i].fifo.fifo_blocks =
			((VXGE_DEF_FIFO_LENGTH - 1) / txdl_per_memblock) + 1;

		device_config->vp_config[i].fifo.intr =
				VXGE_HW_FIFO_QUEUE_INTR_DISABLE;

		/* Configure tti properties */
		device_config->vp_config[i].tti.intr_enable =
					VXGE_HW_TIM_INTR_ENABLE;

		device_config->vp_config[i].tti.btimer_val =
			(VXGE_TTI_BTIMER_VAL * 1000) / 272;

		device_config->vp_config[i].tti.timer_ac_en =
				VXGE_HW_TIM_TIMER_AC_ENABLE;

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3791 3792 3793
		/* For msi-x with napi (each vector has a handler of its own) -
		 * Set CI to OFF for all vpaths
		 */
3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822
		device_config->vp_config[i].tti.timer_ci_en =
			VXGE_HW_TIM_TIMER_CI_DISABLE;

		device_config->vp_config[i].tti.timer_ri_en =
				VXGE_HW_TIM_TIMER_RI_DISABLE;

		device_config->vp_config[i].tti.util_sel =
			VXGE_HW_TIM_UTIL_SEL_LEGACY_TX_NET_UTIL;

		device_config->vp_config[i].tti.ltimer_val =
			(VXGE_TTI_LTIMER_VAL * 1000) / 272;

		device_config->vp_config[i].tti.rtimer_val =
			(VXGE_TTI_RTIMER_VAL * 1000) / 272;

		device_config->vp_config[i].tti.urange_a = TTI_TX_URANGE_A;
		device_config->vp_config[i].tti.urange_b = TTI_TX_URANGE_B;
		device_config->vp_config[i].tti.urange_c = TTI_TX_URANGE_C;
		device_config->vp_config[i].tti.uec_a = TTI_TX_UFC_A;
		device_config->vp_config[i].tti.uec_b = TTI_TX_UFC_B;
		device_config->vp_config[i].tti.uec_c = TTI_TX_UFC_C;
		device_config->vp_config[i].tti.uec_d = TTI_TX_UFC_D;

		/* Configure Rx rings */
		device_config->vp_config[i].ring.enable  =
						VXGE_HW_RING_ENABLE;

		device_config->vp_config[i].ring.ring_blocks  =
						VXGE_HW_DEF_RING_BLOCKS;
J
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3823

3824 3825
		device_config->vp_config[i].ring.buffer_mode =
			VXGE_HW_RING_RXD_BUFFER_MODE_1;
J
Jon Mason 已提交
3826

3827 3828
		device_config->vp_config[i].ring.rxds_limit  =
				VXGE_HW_DEF_RING_RXDS_LIMIT;
J
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3829

3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877
		device_config->vp_config[i].ring.scatter_mode =
					VXGE_HW_RING_SCATTER_MODE_A;

		/* Configure rti properties */
		device_config->vp_config[i].rti.intr_enable =
					VXGE_HW_TIM_INTR_ENABLE;

		device_config->vp_config[i].rti.btimer_val =
			(VXGE_RTI_BTIMER_VAL * 1000)/272;

		device_config->vp_config[i].rti.timer_ac_en =
						VXGE_HW_TIM_TIMER_AC_ENABLE;

		device_config->vp_config[i].rti.timer_ci_en =
						VXGE_HW_TIM_TIMER_CI_DISABLE;

		device_config->vp_config[i].rti.timer_ri_en =
						VXGE_HW_TIM_TIMER_RI_DISABLE;

		device_config->vp_config[i].rti.util_sel =
				VXGE_HW_TIM_UTIL_SEL_LEGACY_RX_NET_UTIL;

		device_config->vp_config[i].rti.urange_a =
						RTI_RX_URANGE_A;
		device_config->vp_config[i].rti.urange_b =
						RTI_RX_URANGE_B;
		device_config->vp_config[i].rti.urange_c =
						RTI_RX_URANGE_C;
		device_config->vp_config[i].rti.uec_a = RTI_RX_UFC_A;
		device_config->vp_config[i].rti.uec_b = RTI_RX_UFC_B;
		device_config->vp_config[i].rti.uec_c = RTI_RX_UFC_C;
		device_config->vp_config[i].rti.uec_d = RTI_RX_UFC_D;

		device_config->vp_config[i].rti.rtimer_val =
			(VXGE_RTI_RTIMER_VAL * 1000) / 272;

		device_config->vp_config[i].rti.ltimer_val =
			(VXGE_RTI_LTIMER_VAL * 1000) / 272;

		device_config->vp_config[i].rpa_strip_vlan_tag =
			vlan_tag_strip;
	}

	driver_config->vpath_per_dev = temp;
	return no_of_vpaths;
}

/* initialize device configuratrions */
3878 3879
static void vxge_device_config_init(struct vxge_hw_device_config *device_config,
				    int *intr_type)
3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904
{
	/* Used for CQRQ/SRQ. */
	device_config->dma_blockpool_initial =
			VXGE_HW_INITIAL_DMA_BLOCK_POOL_SIZE;

	device_config->dma_blockpool_max =
			VXGE_HW_MAX_DMA_BLOCK_POOL_SIZE;

	if (max_mac_vpath > VXGE_MAX_MAC_ADDR_COUNT)
		max_mac_vpath = VXGE_MAX_MAC_ADDR_COUNT;

#ifndef CONFIG_PCI_MSI
	vxge_debug_init(VXGE_ERR,
		"%s: This Kernel does not support "
		"MSI-X. Defaulting to INTA", VXGE_DRIVER_NAME);
	*intr_type = INTA;
#endif

	/* Configure whether MSI-X or IRQL. */
	switch (*intr_type) {
	case INTA:
		device_config->intr_mode = VXGE_HW_INTR_MODE_IRQLINE;
		break;

	case MSI_X:
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Jon Mason 已提交
3905
		device_config->intr_mode = VXGE_HW_INTR_MODE_MSIX_ONE_SHOT;
3906 3907
		break;
	}
J
Jon Mason 已提交
3908

3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929
	/* Timer period between device poll */
	device_config->device_poll_millis = VXGE_TIMER_DELAY;

	/* Configure mac based steering. */
	device_config->rts_mac_en = addr_learn_en;

	/* Configure Vpaths */
	device_config->rth_it_type = VXGE_HW_RTH_IT_TYPE_MULTI_IT;

	vxge_debug_ll_config(VXGE_TRACE, "%s : Device Config Params ",
			__func__);
	vxge_debug_ll_config(VXGE_TRACE, "intr_mode : %d",
			device_config->intr_mode);
	vxge_debug_ll_config(VXGE_TRACE, "device_poll_millis : %d",
			device_config->device_poll_millis);
	vxge_debug_ll_config(VXGE_TRACE, "rth_en : %d",
			device_config->rth_en);
	vxge_debug_ll_config(VXGE_TRACE, "rth_it_type : %d",
			device_config->rth_it_type);
}

3930
static void vxge_print_parm(struct vxgedev *vdev, u64 vpath_mask)
3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007
{
	int i;

	vxge_debug_init(VXGE_TRACE,
		"%s: %d Vpath(s) opened",
		vdev->ndev->name, vdev->no_of_vpath);

	switch (vdev->config.intr_type) {
	case INTA:
		vxge_debug_init(VXGE_TRACE,
			"%s: Interrupt type INTA", vdev->ndev->name);
		break;

	case MSI_X:
		vxge_debug_init(VXGE_TRACE,
			"%s: Interrupt type MSI-X", vdev->ndev->name);
		break;
	}

	if (vdev->config.rth_steering) {
		vxge_debug_init(VXGE_TRACE,
			"%s: RTH steering enabled for TCP_IPV4",
			vdev->ndev->name);
	} else {
		vxge_debug_init(VXGE_TRACE,
			"%s: RTH steering disabled", vdev->ndev->name);
	}

	switch (vdev->config.tx_steering_type) {
	case NO_STEERING:
		vxge_debug_init(VXGE_TRACE,
			"%s: Tx steering disabled", vdev->ndev->name);
		break;
	case TX_PRIORITY_STEERING:
		vxge_debug_init(VXGE_TRACE,
			"%s: Unsupported tx steering option",
			vdev->ndev->name);
		vxge_debug_init(VXGE_TRACE,
			"%s: Tx steering disabled", vdev->ndev->name);
		vdev->config.tx_steering_type = 0;
		break;
	case TX_VLAN_STEERING:
		vxge_debug_init(VXGE_TRACE,
			"%s: Unsupported tx steering option",
			vdev->ndev->name);
		vxge_debug_init(VXGE_TRACE,
			"%s: Tx steering disabled", vdev->ndev->name);
		vdev->config.tx_steering_type = 0;
		break;
	case TX_MULTIQ_STEERING:
		vxge_debug_init(VXGE_TRACE,
			"%s: Tx multiqueue steering enabled",
			vdev->ndev->name);
		break;
	case TX_PORT_STEERING:
		vxge_debug_init(VXGE_TRACE,
			"%s: Tx port steering enabled",
			vdev->ndev->name);
		break;
	default:
		vxge_debug_init(VXGE_ERR,
			"%s: Unsupported tx steering type",
			vdev->ndev->name);
		vxge_debug_init(VXGE_TRACE,
			"%s: Tx steering disabled", vdev->ndev->name);
		vdev->config.tx_steering_type = 0;
	}

	if (vdev->config.addr_learn_en)
		vxge_debug_init(VXGE_TRACE,
			"%s: MAC Address learning enabled", vdev->ndev->name);

	for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
		if (!vxge_bVALn(vpath_mask, i, 1))
			continue;
		vxge_debug_ll_config(VXGE_TRACE,
			"%s: MTU size - %d", vdev->ndev->name,
4008
			((vdev->devh))->
4009 4010 4011
				config.vp_config[i].mtu);
		vxge_debug_init(VXGE_TRACE,
			"%s: VLAN tag stripping %s", vdev->ndev->name,
4012
			((vdev->devh))->
4013 4014 4015 4016
				config.vp_config[i].rpa_strip_vlan_tag
			? "Enabled" : "Disabled");
		vxge_debug_ll_config(VXGE_TRACE,
			"%s: Max frags : %d", vdev->ndev->name,
4017
			((vdev->devh))->
4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053
				config.vp_config[i].fifo.max_frags);
		break;
	}
}

#ifdef CONFIG_PM
/**
 * vxge_pm_suspend - vxge power management suspend entry point
 *
 */
static int vxge_pm_suspend(struct pci_dev *pdev, pm_message_t state)
{
	return -ENOSYS;
}
/**
 * vxge_pm_resume - vxge power management resume entry point
 *
 */
static int vxge_pm_resume(struct pci_dev *pdev)
{
	return -ENOSYS;
}

#endif

/**
 * vxge_io_error_detected - called when PCI error is detected
 * @pdev: Pointer to PCI device
 * @state: The current pci connection state
 *
 * This function is called after a PCI bus error affecting
 * this device has been detected.
 */
static pci_ers_result_t vxge_io_error_detected(struct pci_dev *pdev,
						pci_channel_state_t state)
{
4054
	struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4055 4056 4057 4058
	struct net_device *netdev = hldev->ndev;

	netif_device_detach(netdev);

4059 4060 4061
	if (state == pci_channel_io_perm_failure)
		return PCI_ERS_RESULT_DISCONNECT;

4062 4063 4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082
	if (netif_running(netdev)) {
		/* Bring down the card, while avoiding PCI I/O */
		do_vxge_close(netdev, 0);
	}

	pci_disable_device(pdev);

	return PCI_ERS_RESULT_NEED_RESET;
}

/**
 * vxge_io_slot_reset - called after the pci bus has been reset.
 * @pdev: Pointer to PCI device
 *
 * Restart the card from scratch, as if from a cold-boot.
 * At this point, the card has exprienced a hard reset,
 * followed by fixups by BIOS, and has its config space
 * set up identically to what it was at cold boot.
 */
static pci_ers_result_t vxge_io_slot_reset(struct pci_dev *pdev)
{
4083
	struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4084 4085 4086 4087 4088
	struct net_device *netdev = hldev->ndev;

	struct vxgedev *vdev = netdev_priv(netdev);

	if (pci_enable_device(pdev)) {
4089
		netdev_err(netdev, "Cannot re-enable device after reset\n");
4090 4091 4092 4093
		return PCI_ERS_RESULT_DISCONNECT;
	}

	pci_set_master(pdev);
J
Jon Mason 已提交
4094
	do_vxge_reset(vdev, VXGE_LL_FULL_RESET);
4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107

	return PCI_ERS_RESULT_RECOVERED;
}

/**
 * vxge_io_resume - called when traffic can start flowing again.
 * @pdev: Pointer to PCI device
 *
 * This callback is called when the error recovery driver tells
 * us that its OK to resume normal operation.
 */
static void vxge_io_resume(struct pci_dev *pdev)
{
4108
	struct __vxge_hw_device *hldev = pci_get_drvdata(pdev);
4109 4110 4111 4112
	struct net_device *netdev = hldev->ndev;

	if (netif_running(netdev)) {
		if (vxge_open(netdev)) {
4113 4114
			netdev_err(netdev,
				   "Can't bring device back up after reset\n");
4115 4116 4117 4118 4119 4120 4121
			return;
		}
	}

	netif_device_attach(netdev);
}

4122 4123 4124 4125 4126 4127 4128 4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151
static inline u32 vxge_get_num_vfs(u64 function_mode)
{
	u32 num_functions = 0;

	switch (function_mode) {
	case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
	case VXGE_HW_FUNCTION_MODE_SRIOV_8:
		num_functions = 8;
		break;
	case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
		num_functions = 1;
		break;
	case VXGE_HW_FUNCTION_MODE_SRIOV:
	case VXGE_HW_FUNCTION_MODE_MRIOV:
	case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_17:
		num_functions = 17;
		break;
	case VXGE_HW_FUNCTION_MODE_SRIOV_4:
		num_functions = 4;
		break;
	case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION_2:
		num_functions = 2;
		break;
	case VXGE_HW_FUNCTION_MODE_MRIOV_8:
		num_functions = 8; /* TODO */
		break;
	}
	return num_functions;
}

4152 4153 4154 4155 4156 4157 4158 4159 4160 4161 4162 4163 4164 4165 4166 4167 4168 4169 4170 4171 4172 4173 4174 4175 4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201 4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216
int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override)
{
	struct __vxge_hw_device *hldev = vdev->devh;
	u32 maj, min, bld, cmaj, cmin, cbld;
	enum vxge_hw_status status;
	const struct firmware *fw;
	int ret;

	ret = request_firmware(&fw, fw_name, &vdev->pdev->dev);
	if (ret) {
		vxge_debug_init(VXGE_ERR, "%s: Firmware file '%s' not found",
				VXGE_DRIVER_NAME, fw_name);
		goto out;
	}

	/* Load the new firmware onto the adapter */
	status = vxge_update_fw_image(hldev, fw->data, fw->size);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
				"%s: FW image download to adapter failed '%s'.",
				VXGE_DRIVER_NAME, fw_name);
		ret = -EIO;
		goto out;
	}

	/* Read the version of the new firmware */
	status = vxge_hw_upgrade_read_version(hldev, &maj, &min, &bld);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
				"%s: Upgrade read version failed '%s'.",
				VXGE_DRIVER_NAME, fw_name);
		ret = -EIO;
		goto out;
	}

	cmaj = vdev->config.device_hw_info.fw_version.major;
	cmin = vdev->config.device_hw_info.fw_version.minor;
	cbld = vdev->config.device_hw_info.fw_version.build;
	/* It's possible the version in /lib/firmware is not the latest version.
	 * If so, we could get into a loop of trying to upgrade to the latest
	 * and flashing the older version.
	 */
	if (VXGE_FW_VER(maj, min, bld) == VXGE_FW_VER(cmaj, cmin, cbld) &&
	    !override) {
		ret = -EINVAL;
		goto out;
	}

	printk(KERN_NOTICE "Upgrade to firmware version %d.%d.%d commencing\n",
	       maj, min, bld);

	/* Flash the adapter with the new firmware */
	status = vxge_hw_flash_fw(hldev);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR, "%s: Upgrade commit failed '%s'.",
				VXGE_DRIVER_NAME, fw_name);
		ret = -EIO;
		goto out;
	}

	printk(KERN_NOTICE "Upgrade of firmware successful!  Adapter must be "
	       "hard reset before using, thus requiring a system reboot or a "
	       "hotplug event.\n");

out:
4217
	release_firmware(fw);
4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274 4275 4276 4277 4278
	return ret;
}

static int vxge_probe_fw_update(struct vxgedev *vdev)
{
	u32 maj, min, bld;
	int ret, gpxe = 0;
	char *fw_name;

	maj = vdev->config.device_hw_info.fw_version.major;
	min = vdev->config.device_hw_info.fw_version.minor;
	bld = vdev->config.device_hw_info.fw_version.build;

	if (VXGE_FW_VER(maj, min, bld) == VXGE_CERT_FW_VER)
		return 0;

	/* Ignore the build number when determining if the current firmware is
	 * "too new" to load the driver
	 */
	if (VXGE_FW_VER(maj, min, 0) > VXGE_CERT_FW_VER) {
		vxge_debug_init(VXGE_ERR, "%s: Firmware newer than last known "
				"version, unable to load driver\n",
				VXGE_DRIVER_NAME);
		return -EINVAL;
	}

	/* Firmware 1.4.4 and older cannot be upgraded, and is too ancient to
	 * work with this driver.
	 */
	if (VXGE_FW_VER(maj, min, bld) <= VXGE_FW_DEAD_VER) {
		vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d cannot be "
				"upgraded\n", VXGE_DRIVER_NAME, maj, min, bld);
		return -EINVAL;
	}

	/* If file not specified, determine gPXE or not */
	if (VXGE_FW_VER(maj, min, bld) >= VXGE_EPROM_FW_VER) {
		int i;
		for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++)
			if (vdev->devh->eprom_versions[i]) {
				gpxe = 1;
				break;
			}
	}
	if (gpxe)
		fw_name = "vxge/X3fw-pxe.ncf";
	else
		fw_name = "vxge/X3fw.ncf";

	ret = vxge_fw_upgrade(vdev, fw_name, 0);
	/* -EINVAL and -ENOENT are not fatal errors for flashing firmware on
	 * probe, so ignore them
	 */
	if (ret != -EINVAL && ret != -ENOENT)
		return -EIO;
	else
		ret = 0;

	if (VXGE_FW_VER(VXGE_CERT_FW_VER_MAJOR, VXGE_CERT_FW_VER_MINOR, 0) >
	    VXGE_FW_VER(maj, min, 0)) {
		vxge_debug_init(VXGE_ERR, "%s: Firmware %d.%d.%d is too old to"
J
Jon Mason 已提交
4279
				" be used with this driver.",
4280 4281 4282 4283 4284 4285 4286
				VXGE_DRIVER_NAME, maj, min, bld);
		return -EINVAL;
	}

	return ret;
}

4287
static int is_sriov_initialized(struct pci_dev *pdev)
4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298 4299 4300
{
	int pos;
	u16 ctrl;

	pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
	if (pos) {
		pci_read_config_word(pdev, pos + PCI_SRIOV_CTRL, &ctrl);
		if (ctrl & PCI_SRIOV_CTRL_VFE)
			return 1;
	}
	return 0;
}

4301 4302 4303 4304 4305 4306
static const struct vxge_hw_uld_cbs vxge_callbacks = {
	.link_up = vxge_callback_link_up,
	.link_down = vxge_callback_link_down,
	.crit_err = vxge_callback_crit_err,
};

4307 4308 4309 4310 4311 4312 4313 4314 4315 4316 4317
/**
 * vxge_probe
 * @pdev : structure containing the PCI related information of the device.
 * @pre: List of PCI devices supported by the driver listed in vxge_id_table.
 * Description:
 * This function is called when a new PCI device gets detected and initializes
 * it.
 * Return value:
 * returns 0 on success and negative on failure.
 *
 */
4318
static int
4319 4320
vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
{
J
Jon Mason 已提交
4321
	struct __vxge_hw_device *hldev;
4322 4323 4324 4325 4326
	enum vxge_hw_status status;
	int ret;
	int high_dma = 0;
	u64 vpath_mask = 0;
	struct vxgedev *vdev;
4327
	struct vxge_config *ll_config = NULL;
4328 4329 4330 4331 4332 4333
	struct vxge_hw_device_config *device_config = NULL;
	struct vxge_hw_device_attr attr;
	int i, j, no_of_vpath = 0, max_vpath_supported = 0;
	u8 *macaddr;
	struct vxge_mac_addrs *entry;
	static int bus = -1, device = -1;
4334
	u32 host_type;
4335
	u8 new_device = 0;
4336 4337 4338
	enum vxge_hw_status is_privileged;
	u32 function_mode;
	u32 num_vfs = 0;
4339 4340 4341 4342

	vxge_debug_entryexit(VXGE_TRACE, "%s:%d", __func__, __LINE__);
	attr.pdev = pdev;

4343
	/* In SRIOV-17 mode, functions of the same adapter
J
Jon Mason 已提交
4344 4345 4346 4347
	 * can be deployed on different buses
	 */
	if (((bus != pdev->bus->number) || (device != PCI_SLOT(pdev->devfn))) &&
	    !pdev->is_virtfn)
4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364
		new_device = 1;

	bus = pdev->bus->number;
	device = PCI_SLOT(pdev->devfn);

	if (new_device) {
		if (driver_config->config_dev_cnt &&
		   (driver_config->config_dev_cnt !=
			driver_config->total_dev_cnt))
			vxge_debug_init(VXGE_ERR,
				"%s: Configured %d of %d devices",
				VXGE_DRIVER_NAME,
				driver_config->config_dev_cnt,
				driver_config->total_dev_cnt);
		driver_config->config_dev_cnt = 0;
		driver_config->total_dev_cnt = 0;
	}
J
Jon Mason 已提交
4365

4366 4367 4368 4369
	/* Now making the CPU based no of vpath calculation
	 * applicable for individual functions as well.
	 */
	driver_config->g_no_cpus = 0;
4370 4371
	driver_config->vpath_per_dev = max_config_vpath;

4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384 4385 4386 4387
	driver_config->total_dev_cnt++;
	if (++driver_config->config_dev_cnt > max_config_dev) {
		ret = 0;
		goto _exit0;
	}

	device_config = kzalloc(sizeof(struct vxge_hw_device_config),
		GFP_KERNEL);
	if (!device_config) {
		ret = -ENOMEM;
		vxge_debug_init(VXGE_ERR,
			"device_config : malloc failed %s %d",
			__FILE__, __LINE__);
		goto _exit0;
	}

J
Jon Mason 已提交
4388
	ll_config = kzalloc(sizeof(struct vxge_config), GFP_KERNEL);
4389 4390 4391
	if (!ll_config) {
		ret = -ENOMEM;
		vxge_debug_init(VXGE_ERR,
J
Jon Mason 已提交
4392
			"device_config : malloc failed %s %d",
4393 4394 4395 4396 4397 4398 4399
			__FILE__, __LINE__);
		goto _exit0;
	}
	ll_config->tx_steering_type = TX_MULTIQ_STEERING;
	ll_config->intr_type = MSI_X;
	ll_config->napi_weight = NEW_NAPI_WEIGHT;
	ll_config->rth_steering = RTH_STEERING;
4400 4401 4402 4403 4404

	/* get the default configuration parameters */
	vxge_hw_device_config_default_get(device_config);

	/* initialize configuration parameters */
4405
	vxge_device_config_init(device_config, &ll_config->intr_type);
4406 4407 4408 4409 4410 4411 4412 4413

	ret = pci_enable_device(pdev);
	if (ret) {
		vxge_debug_init(VXGE_ERR,
			"%s : can not enable PCI device", __func__);
		goto _exit0;
	}

4414
	if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4415 4416 4417 4418 4419 4420
		vxge_debug_ll_config(VXGE_TRACE,
			"%s : using 64bit DMA", __func__);

		high_dma = 1;

		if (pci_set_consistent_dma_mask(pdev,
4421
						DMA_BIT_MASK(64))) {
4422 4423 4424 4425 4426 4427
			vxge_debug_init(VXGE_ERR,
				"%s : unable to obtain 64bit DMA for "
				"consistent allocations", __func__);
			ret = -ENOMEM;
			goto _exit1;
		}
4428
	} else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
4429 4430 4431 4432 4433 4434 4435
		vxge_debug_ll_config(VXGE_TRACE,
			"%s : using 32bit DMA", __func__);
	} else {
		ret = -ENOMEM;
		goto _exit1;
	}

J
Jon Mason 已提交
4436 4437
	ret = pci_request_region(pdev, 0, VXGE_DRIVER_NAME);
	if (ret) {
4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457
		vxge_debug_init(VXGE_ERR,
			"%s : request regions failed", __func__);
		goto _exit1;
	}

	pci_set_master(pdev);

	attr.bar0 = pci_ioremap_bar(pdev, 0);
	if (!attr.bar0) {
		vxge_debug_init(VXGE_ERR,
			"%s : cannot remap io memory bar0", __func__);
		ret = -ENODEV;
		goto _exit2;
	}
	vxge_debug_ll_config(VXGE_TRACE,
		"pci ioremap bar0: %p:0x%llx",
		attr.bar0,
		(unsigned long long)pci_resource_start(pdev, 0));

	status = vxge_hw_device_hw_info_get(attr.bar0,
4458
			&ll_config->device_hw_info);
4459 4460 4461 4462 4463
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"%s: Reading of hardware info failed."
			"Please try upgrading the firmware.", VXGE_DRIVER_NAME);
		ret = -EINVAL;
4464
		goto _exit3;
4465 4466
	}

4467
	vpath_mask = ll_config->device_hw_info.vpath_mask;
4468 4469 4470 4471
	if (vpath_mask == 0) {
		vxge_debug_ll_config(VXGE_TRACE,
			"%s: No vpaths available in device", VXGE_DRIVER_NAME);
		ret = -EINVAL;
4472
		goto _exit3;
4473 4474 4475 4476 4477 4478
	}

	vxge_debug_ll_config(VXGE_TRACE,
		"%s:%d  Vpath mask = %llx", __func__, __LINE__,
		(unsigned long long)vpath_mask);

4479 4480
	function_mode = ll_config->device_hw_info.function_mode;
	host_type = ll_config->device_hw_info.host_type;
4481
	is_privileged = __vxge_hw_device_is_privilaged(host_type,
4482
		ll_config->device_hw_info.func_id);
4483

4484 4485 4486 4487 4488 4489 4490
	/* Check how many vpaths are available */
	for (i = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
		if (!((vpath_mask) & vxge_mBIT(i)))
			continue;
		max_vpath_supported++;
	}

4491 4492 4493
	if (new_device)
		num_vfs = vxge_get_num_vfs(function_mode) - 1;

4494
	/* Enable SRIOV mode, if firmware has SRIOV support and if it is a PF */
4495 4496 4497
	if (is_sriov(function_mode) && !is_sriov_initialized(pdev) &&
	   (ll_config->intr_type != INTA)) {
		ret = pci_enable_sriov(pdev, num_vfs);
4498 4499 4500
		if (ret)
			vxge_debug_ll_config(VXGE_ERR,
				"Failed in enabling SRIOV mode: %d\n", ret);
4501
			/* No need to fail out, as an error here is non-fatal */
4502 4503
	}

4504 4505 4506 4507
	/*
	 * Configure vpaths and get driver configured number of vpaths
	 * which is less than or equal to the maximum vpaths per function.
	 */
4508
	no_of_vpath = vxge_config_vpaths(device_config, vpath_mask, ll_config);
4509 4510 4511 4512
	if (!no_of_vpath) {
		vxge_debug_ll_config(VXGE_ERR,
			"%s: No more vpaths to configure", VXGE_DRIVER_NAME);
		ret = 0;
4513
		goto _exit3;
4514 4515 4516
	}

	/* Setting driver callbacks */
4517
	attr.uld_callbacks = &vxge_callbacks;
4518 4519 4520 4521 4522 4523

	status = vxge_hw_device_initialize(&hldev, &attr, device_config);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR,
			"Failed to initialize device (%d)", status);
			ret = -EINVAL;
4524
			goto _exit3;
4525 4526
	}

4527 4528 4529 4530 4531 4532 4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544
	if (VXGE_FW_VER(ll_config->device_hw_info.fw_version.major,
			ll_config->device_hw_info.fw_version.minor,
			ll_config->device_hw_info.fw_version.build) >=
	    VXGE_EPROM_FW_VER) {
		struct eprom_image img[VXGE_HW_MAX_ROM_IMAGES];

		status = vxge_hw_vpath_eprom_img_ver_get(hldev, img);
		if (status != VXGE_HW_OK) {
			vxge_debug_init(VXGE_ERR, "%s: Reading of EPROM failed",
					VXGE_DRIVER_NAME);
			/* This is a non-fatal error, continue */
		}

		for (i = 0; i < VXGE_HW_MAX_ROM_IMAGES; i++) {
			hldev->eprom_versions[i] = img[i].version;
			if (!img[i].is_valid)
				break;
			vxge_debug_init(VXGE_TRACE, "%s: EPROM %d, version "
4545
					"%d.%d.%d.%d", VXGE_DRIVER_NAME, i,
4546 4547 4548 4549 4550 4551 4552
					VXGE_EPROM_IMG_MAJOR(img[i].version),
					VXGE_EPROM_IMG_MINOR(img[i].version),
					VXGE_EPROM_IMG_FIX(img[i].version),
					VXGE_EPROM_IMG_BUILD(img[i].version));
		}
	}

4553
	/* if FCS stripping is not disabled in MAC fail driver load */
4554 4555 4556 4557
	status = vxge_hw_vpath_strip_fcs_check(hldev, vpath_mask);
	if (status != VXGE_HW_OK) {
		vxge_debug_init(VXGE_ERR, "%s: FCS stripping is enabled in MAC"
				" failing driver load", VXGE_DRIVER_NAME);
4558 4559 4560 4561
		ret = -EINVAL;
		goto _exit4;
	}

4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579
	/* Always enable HWTS.  This will always cause the FCS to be invalid,
	 * due to the fact that HWTS is using the FCS as the location of the
	 * timestamp.  The HW FCS checking will still correctly determine if
	 * there is a valid checksum, and the FCS is being removed by the driver
	 * anyway.  So no fucntionality is being lost.  Since it is always
	 * enabled, we now simply use the ioctl call to set whether or not the
	 * driver should be paying attention to the HWTS.
	 */
	if (is_privileged == VXGE_HW_OK) {
		status = vxge_timestamp_config(hldev);
		if (status != VXGE_HW_OK) {
			vxge_debug_init(VXGE_ERR, "%s: HWTS enable failed",
					VXGE_DRIVER_NAME);
			ret = -EFAULT;
			goto _exit4;
		}
	}

4580 4581 4582 4583 4584
	vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);

	/* set private device info */
	pci_set_drvdata(pdev, hldev);

4585 4586 4587
	ll_config->fifo_indicate_max_pkts = VXGE_FIFO_INDICATE_MAX_PKTS;
	ll_config->addr_learn_en = addr_learn_en;
	ll_config->rth_algorithm = RTH_ALG_JENKINS;
J
Jon Mason 已提交
4588 4589 4590 4591 4592 4593
	ll_config->rth_hash_type_tcpipv4 = 1;
	ll_config->rth_hash_type_ipv4 = 0;
	ll_config->rth_hash_type_tcpipv6 = 0;
	ll_config->rth_hash_type_ipv6 = 0;
	ll_config->rth_hash_type_tcpipv6ex = 0;
	ll_config->rth_hash_type_ipv6ex = 0;
4594 4595 4596 4597
	ll_config->rth_bkt_sz = RTH_BUCKET_SIZE;
	ll_config->tx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;
	ll_config->rx_pause_enable = VXGE_PAUSE_CTRL_ENABLE;

4598 4599 4600
	ret = vxge_device_register(hldev, ll_config, high_dma, no_of_vpath,
				   &vdev);
	if (ret) {
4601
		ret = -EINVAL;
4602
		goto _exit4;
4603 4604
	}

4605 4606 4607 4608
	ret = vxge_probe_fw_update(vdev);
	if (ret)
		goto _exit5;

4609 4610 4611 4612 4613 4614 4615 4616 4617 4618 4619 4620 4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631
	vxge_hw_device_debug_set(hldev, VXGE_TRACE, VXGE_COMPONENT_LL);
	VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
		vxge_hw_device_trace_level_get(hldev));

	/* set private HW device info */
	vdev->mtu = VXGE_HW_DEFAULT_MTU;
	vdev->bar0 = attr.bar0;
	vdev->max_vpath_supported = max_vpath_supported;
	vdev->no_of_vpath = no_of_vpath;

	/* Virtual Path count */
	for (i = 0, j = 0; i < VXGE_HW_MAX_VIRTUAL_PATHS; i++) {
		if (!vxge_bVALn(vpath_mask, i, 1))
			continue;
		if (j >= vdev->no_of_vpath)
			break;

		vdev->vpaths[j].is_configured = 1;
		vdev->vpaths[j].device_id = i;
		vdev->vpaths[j].ring.driver_id = j;
		vdev->vpaths[j].vdev = vdev;
		vdev->vpaths[j].max_mac_addr_cnt = max_mac_vpath;
		memcpy((u8 *)vdev->vpaths[j].macaddr,
4632
				ll_config->device_hw_info.mac_addrs[i],
4633 4634 4635 4636 4637 4638 4639 4640 4641 4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652
				ETH_ALEN);

		/* Initialize the mac address list header */
		INIT_LIST_HEAD(&vdev->vpaths[j].mac_addr_list);

		vdev->vpaths[j].mac_addr_cnt = 0;
		vdev->vpaths[j].mcast_addr_cnt = 0;
		j++;
	}
	vdev->exec_mode = VXGE_EXEC_MODE_DISABLE;
	vdev->max_config_port = max_config_port;

	vdev->vlan_tag_strip = vlan_tag_strip;

	/* map the hashing selector table to the configured vpaths */
	for (i = 0; i < vdev->no_of_vpath; i++)
		vdev->vpath_selector[i] = vpath_selector[i];

	macaddr = (u8 *)vdev->vpaths[0].macaddr;

4653 4654 4655
	ll_config->device_hw_info.serial_number[VXGE_HW_INFO_LEN - 1] = '\0';
	ll_config->device_hw_info.product_desc[VXGE_HW_INFO_LEN - 1] = '\0';
	ll_config->device_hw_info.part_number[VXGE_HW_INFO_LEN - 1] = '\0';
4656 4657

	vxge_debug_init(VXGE_TRACE, "%s: SERIAL NUMBER: %s",
4658
		vdev->ndev->name, ll_config->device_hw_info.serial_number);
4659 4660

	vxge_debug_init(VXGE_TRACE, "%s: PART NUMBER: %s",
4661
		vdev->ndev->name, ll_config->device_hw_info.part_number);
4662 4663

	vxge_debug_init(VXGE_TRACE, "%s: Neterion %s Server Adapter",
4664
		vdev->ndev->name, ll_config->device_hw_info.product_desc);
4665

4666 4667
	vxge_debug_init(VXGE_TRACE, "%s: MAC ADDR: %pM",
		vdev->ndev->name, macaddr);
4668 4669 4670 4671 4672 4673

	vxge_debug_init(VXGE_TRACE, "%s: Link Width x%d",
		vdev->ndev->name, vxge_hw_device_link_width_get(hldev));

	vxge_debug_init(VXGE_TRACE,
		"%s: Firmware version : %s Date : %s", vdev->ndev->name,
4674 4675
		ll_config->device_hw_info.fw_version.version,
		ll_config->device_hw_info.fw_date.date);
4676

4677
	if (new_device) {
4678
		switch (ll_config->device_hw_info.function_mode) {
4679 4680 4681 4682 4683 4684 4685 4686 4687 4688 4689 4690 4691 4692 4693 4694 4695 4696 4697
		case VXGE_HW_FUNCTION_MODE_SINGLE_FUNCTION:
			vxge_debug_init(VXGE_TRACE,
			"%s: Single Function Mode Enabled", vdev->ndev->name);
		break;
		case VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION:
			vxge_debug_init(VXGE_TRACE,
			"%s: Multi Function Mode Enabled", vdev->ndev->name);
		break;
		case VXGE_HW_FUNCTION_MODE_SRIOV:
			vxge_debug_init(VXGE_TRACE,
			"%s: Single Root IOV Mode Enabled", vdev->ndev->name);
		break;
		case VXGE_HW_FUNCTION_MODE_MRIOV:
			vxge_debug_init(VXGE_TRACE,
			"%s: Multi Root IOV Mode Enabled", vdev->ndev->name);
		break;
		}
	}

4698 4699 4700
	vxge_print_parm(vdev, vpath_mask);

	/* Store the fw version for ethttool option */
4701
	strcpy(vdev->fw_version, ll_config->device_hw_info.fw_version.version);
4702 4703 4704 4705
	memcpy(vdev->ndev->dev_addr, (u8 *)vdev->vpaths[0].macaddr, ETH_ALEN);

	/* Copy the station mac address to the list */
	for (i = 0; i < vdev->no_of_vpath; i++) {
4706
		entry =	kzalloc(sizeof(struct vxge_mac_addrs), GFP_KERNEL);
4707 4708 4709 4710 4711
		if (NULL == entry) {
			vxge_debug_init(VXGE_ERR,
				"%s: mac_addr_list : memory allocation failed",
				vdev->ndev->name);
			ret = -EPERM;
4712
			goto _exit6;
4713 4714 4715 4716 4717 4718 4719
		}
		macaddr = (u8 *)&entry->macaddr;
		memcpy(macaddr, vdev->ndev->dev_addr, ETH_ALEN);
		list_add(&entry->item, &vdev->vpaths[i].mac_addr_list);
		vdev->vpaths[i].mac_addr_cnt = 1;
	}

4720
	kfree(device_config);
4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736

	/*
	 * INTA is shared in multi-function mode. This is unlike the INTA
	 * implementation in MR mode, where each VH has its own INTA message.
	 * - INTA is masked (disabled) as long as at least one function sets
	 * its TITAN_MASK_ALL_INT.ALARM bit.
	 * - INTA is unmasked (enabled) when all enabled functions have cleared
	 * their own TITAN_MASK_ALL_INT.ALARM bit.
	 * The TITAN_MASK_ALL_INT ALARM & TRAFFIC bits are cleared on power up.
	 * Though this driver leaves the top level interrupts unmasked while
	 * leaving the required module interrupt bits masked on exit, there
	 * could be a rougue driver around that does not follow this procedure
	 * resulting in a failure to generate interrupts. The following code is
	 * present to prevent such a failure.
	 */

4737
	if (ll_config->device_hw_info.function_mode ==
4738 4739 4740 4741
		VXGE_HW_FUNCTION_MODE_MULTI_FUNCTION)
		if (vdev->config.intr_type == INTA)
			vxge_hw_device_unmask_all(hldev);

4742 4743 4744 4745 4746 4747 4748
	vxge_debug_entryexit(VXGE_TRACE, "%s: %s:%d  Exiting...",
		vdev->ndev->name, __func__, __LINE__);

	vxge_hw_device_debug_set(hldev, VXGE_ERR, VXGE_COMPONENT_LL);
	VXGE_COPY_DEBUG_INFO_TO_LL(vdev, vxge_hw_device_error_level_get(hldev),
		vxge_hw_device_trace_level_get(hldev));

4749
	kfree(ll_config);
4750 4751
	return 0;

4752
_exit6:
4753 4754
	for (i = 0; i < vdev->no_of_vpath; i++)
		vxge_free_mac_add_list(&vdev->vpaths[i]);
4755
_exit5:
4756
	vxge_device_unregister(hldev);
4757
_exit4:
4758
	vxge_hw_device_terminate(hldev);
J
Jon Mason 已提交
4759
	pci_disable_sriov(pdev);
4760 4761 4762
_exit3:
	iounmap(attr.bar0);
_exit2:
J
Jon Mason 已提交
4763
	pci_release_region(pdev, 0);
4764 4765 4766
_exit1:
	pci_disable_device(pdev);
_exit0:
4767
	kfree(ll_config);
4768 4769
	kfree(device_config);
	driver_config->config_dev_cnt--;
J
Jon Mason 已提交
4770
	driver_config->total_dev_cnt--;
4771 4772 4773 4774 4775 4776 4777 4778 4779
	return ret;
}

/**
 * vxge_rem_nic - Free the PCI device
 * @pdev: structure containing the PCI related information of the device.
 * Description: This function is called by the Pci subsystem to release a
 * PCI device and free up all resource held up by the device.
 */
4780
static void vxge_remove(struct pci_dev *pdev)
4781
{
J
Jon Mason 已提交
4782
	struct __vxge_hw_device *hldev;
J
Jon Mason 已提交
4783 4784
	struct vxgedev *vdev;
	int i;
4785

4786
	hldev = pci_get_drvdata(pdev);
4787 4788
	if (hldev == NULL)
		return;
J
Jon Mason 已提交
4789

J
Jon Mason 已提交
4790
	vdev = netdev_priv(hldev->ndev);
4791

J
Jon Mason 已提交
4792 4793 4794
	vxge_debug_entryexit(vdev->level_trace,	"%s:%d", __func__, __LINE__);
	vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
			__func__);
4795

J
Jon Mason 已提交
4796
	for (i = 0; i < vdev->no_of_vpath; i++)
4797 4798
		vxge_free_mac_add_list(&vdev->vpaths[i]);

J
Jon Mason 已提交
4799 4800 4801
	vxge_device_unregister(hldev);
	/* Do not call pci_disable_sriov here, as it will break child devices */
	vxge_hw_device_terminate(hldev);
4802
	iounmap(vdev->bar0);
J
Jon Mason 已提交
4803 4804 4805 4806
	pci_release_region(pdev, 0);
	pci_disable_device(pdev);
	driver_config->config_dev_cnt--;
	driver_config->total_dev_cnt--;
4807

J
Jon Mason 已提交
4808 4809 4810 4811
	vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
			__func__, __LINE__);
	vxge_debug_entryexit(vdev->level_trace,	"%s:%d  Exiting...", __func__,
			     __LINE__);
4812 4813
}

4814
static const struct pci_error_handlers vxge_err_handler = {
4815 4816 4817 4818 4819 4820 4821 4822 4823
	.error_detected = vxge_io_error_detected,
	.slot_reset = vxge_io_slot_reset,
	.resume = vxge_io_resume,
};

static struct pci_driver vxge_driver = {
	.name = VXGE_DRIVER_NAME,
	.id_table = vxge_id_table,
	.probe = vxge_probe,
4824
	.remove = vxge_remove,
4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836
#ifdef CONFIG_PM
	.suspend = vxge_pm_suspend,
	.resume = vxge_pm_resume,
#endif
	.err_handler = &vxge_err_handler,
};

static int __init
vxge_starter(void)
{
	int ret = 0;

4837 4838
	pr_info("Copyright(c) 2002-2010 Exar Corp.\n");
	pr_info("Driver version: %s\n", DRV_VERSION);
4839 4840 4841 4842 4843 4844 4845 4846

	verify_bandwidth();

	driver_config = kzalloc(sizeof(struct vxge_drv_config), GFP_KERNEL);
	if (!driver_config)
		return -ENOMEM;

	ret = pci_register_driver(&vxge_driver);
J
Jon Mason 已提交
4847 4848 4849 4850
	if (ret) {
		kfree(driver_config);
		goto err;
	}
4851 4852 4853 4854 4855 4856 4857

	if (driver_config->config_dev_cnt &&
	   (driver_config->config_dev_cnt != driver_config->total_dev_cnt))
		vxge_debug_init(VXGE_ERR,
			"%s: Configured %d of %d devices",
			VXGE_DRIVER_NAME, driver_config->config_dev_cnt,
			driver_config->total_dev_cnt);
J
Jon Mason 已提交
4858
err:
4859 4860 4861 4862 4863 4864 4865 4866 4867 4868 4869
	return ret;
}

static void __exit
vxge_closer(void)
{
	pci_unregister_driver(&vxge_driver);
	kfree(driver_config);
}
module_init(vxge_starter);
module_exit(vxge_closer);