/** Alignment
*
- * No data structure requires greater than 128 byte alignment.
+ * No data structure requires greater than 256 byte alignment.
*/
-#define INTELXL_ALIGN 128
+#define INTELXL_ALIGN 256
/******************************************************************************
*
/** Admin queue Send Message to VF command */
#define INTELXL_ADMIN_SEND_TO_VF 0x0802
+/** Admin Queue VF Reset opcode */
+#define INTELXL_ADMIN_VF_RESET 0x00000002
+
+/** Admin Queue VF Get Resources opcode */
+#define INTELXL_ADMIN_VF_GET_RESOURCES 0x00000003
+
+/** Admin Queue VF Get Resources data buffer */
+struct intelxl_admin_vf_get_resources_buffer {
+ /** Reserved */
+ uint8_t reserved_a[20];
+ /** VSI switching element ID */
+ uint16_t vsi;
+ /** Reserved */
+ uint8_t reserved_b[8];
+ /** MAC address */
+ uint8_t mac[ETH_ALEN];
+} __attribute__ (( packed ));
+
+/** Admin Queue VF Status Change Event opcode */
+#define INTELXL_ADMIN_VF_STATUS 0x00000011
+
+/** Link status change event type */
+#define INTELXL_ADMIN_VF_STATUS_LINK 0x00000001
+
+/** Link status change event data */
+struct intelxl_admin_vf_status_link {
+ /** Link speed */
+ uint32_t speed;
+ /** Link status */
+ uint8_t status;
+ /** Reserved */
+ uint8_t reserved[3];
+} __attribute__ (( packed ));
+
+/** Admin Queue VF Status Change Event data buffer */
+struct intelxl_admin_vf_status_buffer {
+ /** Event type */
+ uint32_t event;
+ /** Event data */
+ union {
+ /** Link change event data */
+ struct intelxl_admin_vf_status_link link;
+ } data;
+ /** Reserved */
+ uint8_t reserved[4];
+} __attribute__ (( packed ));
+
+/** Admin Queue VF Configure Queues opcode */
+#define INTELXL_ADMIN_VF_CONFIGURE 0x00000006
+
+/** Admin Queue VF Configure Queues data buffer */
+struct intelxl_admin_vf_configure_buffer {
+ /** VSI switching element ID */
+ uint16_t vsi;
+ /** Number of queue pairs */
+ uint16_t count;
+ /** Reserved */
+ uint8_t reserved_a[4];
+ /** Transmit queue */
+ struct {
+ /** VSI switching element ID */
+ uint16_t vsi;
+ /** Queue ID */
+ uint16_t id;
+ /** Queue count */
+ uint16_t count;
+ /** Reserved */
+ uint8_t reserved_a[2];
+ /** Base address */
+ uint64_t base;
+ /** Reserved */
+ uint8_t reserved_b[8];
+ } __attribute__ (( packed )) tx;
+ /** Receive queue */
+ struct {
+ /** VSI switching element ID */
+ uint16_t vsi;
+ /** Queue ID */
+ uint16_t id;
+ /** Queue count */
+ uint32_t count;
+ /** Reserved */
+ uint8_t reserved_a[4];
+ /** Data buffer length */
+ uint32_t len;
+ /** Maximum frame size */
+ uint32_t mfs;
+ /** Reserved */
+ uint8_t reserved_b[4];
+ /** Base address */
+ uint64_t base;
+ /** Reserved */
+ uint8_t reserved_c[8];
+ } __attribute__ (( packed )) rx;
+ /** Reserved
+ *
+ * This field exists only due to a bug in the PF driver's
+ * message validation logic, which causes it to miscalculate
+ * the expected message length.
+ */
+ uint8_t reserved_b[64];
+} __attribute__ (( packed ));
+
+/** Admin Queue VF IRQ Map opcode */
+#define INTELXL_ADMIN_VF_IRQ_MAP 0x00000007
+
+/** Admin Queue VF IRQ Map data buffer */
+struct intelxl_admin_vf_irq_map_buffer {
+ /** Number of interrupt vectors */
+ uint16_t count;
+ /** VSI switching element ID */
+ uint16_t vsi;
+ /** Interrupt vector ID */
+ uint16_t vec;
+ /** Receive queue bitmap */
+ uint16_t rxmap;
+ /** Transmit queue bitmap */
+ uint16_t txmap;
+ /** Receive interrupt throttling index */
+ uint16_t rxitr;
+ /** Transmit interrupt throttling index */
+ uint16_t txitr;
+ /** Reserved
+ *
+ * This field exists only due to a bug in the PF driver's
+ * message validation logic, which causes it to miscalculate
+ * the expected message length.
+ */
+ uint8_t reserved[12];
+} __attribute__ (( packed ));
+
+/** Admin Queue VF Enable Queues opcode */
+#define INTELXL_ADMIN_VF_ENABLE 0x00000008
+
+/** Admin Queue VF Disable Queues opcode */
+#define INTELXL_ADMIN_VF_DISABLE 0x00000009
+
+/** Admin Queue VF Enable/Disable Queues data buffer */
+struct intelxl_admin_vf_queues_buffer {
+ /** VSI switching element ID */
+ uint16_t vsi;
+ /** Reserved */
+ uint8_t reserved[2];
+ /** Receive queue bitmask */
+ uint32_t rx;
+ /** Transmit queue bitmask */
+ uint32_t tx;
+} __attribute__ (( packed ));
+
+/** Admin Queue VF Configure Promiscuous Mode opcode */
+#define INTELXL_ADMIN_VF_PROMISC 0x0000000e
+
+/** Admin Queue VF Configure Promiscuous Mode data buffer */
+struct intelxl_admin_vf_promisc_buffer {
+ /** VSI switching element ID */
+ uint16_t vsi;
+ /** Flags */
+ uint16_t flags;
+} __attribute__ (( packed ));
+
/** Admin queue command parameters */
union intelxl_admin_params {
/** Additional data buffer command parameters */
struct intelxl_admin_switch_buffer sw;
/** Get VSI Parameters data buffer */
struct intelxl_admin_vsi_buffer vsi;
+ /** VF Get Resources data buffer */
+ struct intelxl_admin_vf_get_resources_buffer res;
+ /** VF Status Change Event data buffer */
+ struct intelxl_admin_vf_status_buffer stat;
+ /** VF Configure Queues data buffer */
+ struct intelxl_admin_vf_configure_buffer cfg;
+ /** VF Enable/Disable Queues data buffer */
+ struct intelxl_admin_vf_queues_buffer queues;
+ /** VF Configure Promiscuous Mode data buffer */
+ struct intelxl_admin_vf_promisc_buffer promisc;
+ /*** VF IRQ Map data buffer */
+ struct intelxl_admin_vf_irq_map_buffer irq;
/** Alignment padding */
uint8_t pad[INTELXL_ALIGN];
} __attribute__ (( packed ));
struct pci_msix msix;
/** MSI-X dummy interrupt target */
uint32_t msg;
+ /** PCI Express capability offset */
+ unsigned int exp;
/** Admin command queue */
struct intelxl_admin command;
/** Admin event queue */
struct intelxl_admin event;
+ /** Current VF opcode */
+ unsigned int vopcode;
+ /** Current VF return value */
+ int vret;
+ /** Current VF event data buffer */
+ union intelxl_admin_buffer vbuf;
+
/** Transmit descriptor ring */
struct intelxl_ring tx;
/** Receive descriptor ring */
--- /dev/null
+/*
+ * Copyright (C) 2019 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ * You can also choose to distribute this program under the terms of
+ * the Unmodified Binary Distribution Licence (as given in the file
+ * COPYING.UBDL), provided that you have satisfied its requirements.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <byteswap.h>
+#include <ipxe/pci.h>
+#include <ipxe/netdevice.h>
+#include <ipxe/ethernet.h>
+#include "intelxlvf.h"
+
+/** @file
+ *
+ * Intel 40 Gigabit Ethernet virtual function network card driver
+ *
+ */
+
+/******************************************************************************
+ *
+ * Device reset
+ *
+ ******************************************************************************
+ */
+
+/**
+ * Reset hardware via PCIe function-level reset
+ *
+ * @v intelxl Intel device
+ */
+static void intelxlvf_reset_flr ( struct intelxl_nic *intelxl,
+ struct pci_device *pci ) {
+ uint16_t control;
+
+ /* Perform a PCIe function-level reset */
+ pci_read_config_word ( pci, ( intelxl->exp + PCI_EXP_DEVCTL ),
+ &control );
+ pci_write_config_word ( pci, ( intelxl->exp + PCI_EXP_DEVCTL ),
+ ( control | PCI_EXP_DEVCTL_FLR ) );
+ mdelay ( INTELXL_RESET_DELAY_MS );
+}
+
+/**
+ * Wait for admin event queue to be torn down
+ *
+ * @v intelxl Intel device
+ * @ret rc Return status code
+ */
+static int intelxlvf_reset_wait_teardown ( struct intelxl_nic *intelxl ) {
+ uint32_t admin_evt_len;
+ unsigned int i;
+
+ /* Wait for admin event queue to be torn down */
+ for ( i = 0 ; i < INTELXLVF_RESET_MAX_WAIT_MS ; i++ ) {
+
+ /* Check admin event queue length register */
+ admin_evt_len = readl ( intelxl->regs + INTELXLVF_ADMIN +
+ INTELXLVF_ADMIN_EVT_LEN );
+ if ( ! ( admin_evt_len & INTELXL_ADMIN_LEN_ENABLE ) )
+ return 0;
+
+ /* Delay */
+ mdelay ( 1 );
+ }
+
+ DBGC ( intelxl, "INTELXL %p timed out waiting for teardown (%#08x)\n",
+ intelxl, admin_evt_len );
+ return -ETIMEDOUT;
+}
+
+/**
+ * Wait for virtual function to be marked as active
+ *
+ * @v intelxl Intel device
+ * @ret rc Return status code
+ */
+static int intelxlvf_reset_wait_active ( struct intelxl_nic *intelxl ) {
+ uint32_t vfgen_rstat;
+ unsigned int vfr_state;
+ unsigned int i;
+
+ /* Wait for virtual function to be marked as active */
+ for ( i = 0 ; i < INTELXLVF_RESET_MAX_WAIT_MS ; i++ ) {
+
+ /* Check status as written by physical function driver */
+ vfgen_rstat = readl ( intelxl->regs + INTELXLVF_VFGEN_RSTAT );
+ vfr_state = INTELXLVF_VFGEN_RSTAT_VFR_STATE ( vfgen_rstat );
+ if ( vfr_state == INTELXLVF_VFGEN_RSTAT_VFR_STATE_ACTIVE )
+ return 0;
+
+ /* Delay */
+ mdelay ( 1 );
+ }
+
+ DBGC ( intelxl, "INTELXL %p timed out waiting for activation "
+ "(%#08x)\n", intelxl, vfgen_rstat );
+ return -ETIMEDOUT;
+}
+
+/**
+ * Reset hardware via admin queue
+ *
+ * @v intelxl Intel device
+ * @ret rc Return status code
+ */
+static int intelxlvf_reset_admin ( struct intelxl_nic *intelxl ) {
+ struct intelxl_admin_descriptor *cmd;
+ int rc;
+
+ /* Populate descriptor */
+ cmd = intelxl_admin_command_descriptor ( intelxl );
+ cmd->opcode = cpu_to_le16 ( INTELXL_ADMIN_SEND_TO_PF );
+ cmd->vopcode = cpu_to_le32 ( INTELXL_ADMIN_VF_RESET );
+
+ /* Issue command */
+ if ( ( rc = intelxl_admin_command ( intelxl ) ) != 0 )
+ goto err_command;
+
+ /* Wait for minimum reset time */
+ mdelay ( INTELXL_RESET_DELAY_MS );
+
+ /* Wait for reset to take effect */
+ if ( ( rc = intelxlvf_reset_wait_teardown ( intelxl ) ) != 0 )
+ goto err_teardown;
+
+ /* Wait for virtual function to become active */
+ if ( ( rc = intelxlvf_reset_wait_active ( intelxl ) ) != 0 )
+ goto err_active;
+
+ err_active:
+ err_teardown:
+ intelxl_reopen_admin ( intelxl );
+ err_command:
+ return rc;
+}
+
+/******************************************************************************
+ *
+ * Admin queue
+ *
+ ******************************************************************************
+ */
+
+/** Admin command queue register offsets */
+static const struct intelxl_admin_offsets intelxlvf_admin_command_offsets = {
+ .bal = INTELXLVF_ADMIN_CMD_BAL,
+ .bah = INTELXLVF_ADMIN_CMD_BAH,
+ .len = INTELXLVF_ADMIN_CMD_LEN,
+ .head = INTELXLVF_ADMIN_CMD_HEAD,
+ .tail = INTELXLVF_ADMIN_CMD_TAIL,
+};
+
+/** Admin event queue register offsets */
+static const struct intelxl_admin_offsets intelxlvf_admin_event_offsets = {
+ .bal = INTELXLVF_ADMIN_EVT_BAL,
+ .bah = INTELXLVF_ADMIN_EVT_BAH,
+ .len = INTELXLVF_ADMIN_EVT_LEN,
+ .head = INTELXLVF_ADMIN_EVT_HEAD,
+ .tail = INTELXLVF_ADMIN_EVT_TAIL,
+};
+
+/**
+ * Issue admin queue virtual function command
+ *
+ * @v netdev Network device
+ * @ret rc Return status code
+ */
+static int intelxlvf_admin_command ( struct net_device *netdev ) {
+ struct intelxl_nic *intelxl = netdev->priv;
+ struct intelxl_admin *admin = &intelxl->command;
+ struct intelxl_admin_descriptor *cmd;
+ unsigned int i;
+ int rc;
+
+ /* Populate descriptor */
+ cmd = &admin->desc[ admin->index % INTELXL_ADMIN_NUM_DESC ];
+ cmd->opcode = cpu_to_le16 ( INTELXL_ADMIN_SEND_TO_PF );
+
+ /* Record opcode */
+ intelxl->vopcode = le32_to_cpu ( cmd->vopcode );
+
+ /* Issue command */
+ if ( ( rc = intelxl_admin_command ( intelxl ) ) != 0 )
+ goto err_command;
+
+ /* Wait for response */
+ for ( i = 0 ; i < INTELXLVF_ADMIN_MAX_WAIT_MS ; i++ ) {
+
+ /* Poll admin event queue */
+ intelxl_poll_admin ( netdev );
+
+ /* If response has not arrived, delay 1ms and retry */
+ if ( intelxl->vopcode ) {
+ mdelay ( 1 );
+ continue;
+ }
+
+ /* Check for errors */
+ if ( intelxl->vret != 0 )
+ return -EIO;
+
+ return 0;
+ }
+
+ rc = -ETIMEDOUT;
+ DBGC ( intelxl, "INTELXL %p timed out waiting for admin VF command "
+ "%#x\n", intelxl, intelxl->vopcode );
+ err_command:
+ intelxl->vopcode = 0;
+ return rc;
+}
+
+/**
+ * Handle link status event
+ *
+ * @v netdev Network device
+ * @v link Link status
+ */
+static void intelxlvf_admin_link ( struct net_device *netdev,
+ struct intelxl_admin_vf_status_link *link ) {
+ struct intelxl_nic *intelxl = netdev->priv;
+
+ DBGC ( intelxl, "INTELXL %p link %#02x speed %#02x\n", intelxl,
+ link->status, link->speed );
+
+ /* Update network device */
+ if ( link->status ) {
+ netdev_link_up ( netdev );
+ } else {
+ netdev_link_down ( netdev );
+ }
+}
+
+/**
+ * Handle status change event
+ *
+ * @v netdev Network device
+ * @v stat Status change event
+ */
+static void
+intelxlvf_admin_status ( struct net_device *netdev,
+ struct intelxl_admin_vf_status_buffer *stat ) {
+ struct intelxl_nic *intelxl = netdev->priv;
+
+ /* Handle event */
+ switch ( stat->event ) {
+ case cpu_to_le32 ( INTELXL_ADMIN_VF_STATUS_LINK ):
+ intelxlvf_admin_link ( netdev, &stat->data.link );
+ break;
+ default:
+ DBGC ( intelxl, "INTELXL %p unrecognised status change "
+ "event %#x:\n", intelxl, le32_to_cpu ( stat->event ) );
+ DBGC_HDA ( intelxl, 0, stat, sizeof ( *stat ) );
+ break;
+ }
+}
+
+/**
+ * Handle virtual function event
+ *
+ * @v netdev Network device
+ * @v evt Admin queue event descriptor
+ * @v buf Admin queue event data buffer
+ */
+void intelxlvf_admin_event ( struct net_device *netdev,
+ struct intelxl_admin_descriptor *evt,
+ union intelxl_admin_buffer *buf ) {
+ struct intelxl_nic *intelxl = netdev->priv;
+ unsigned int vopcode = le32_to_cpu ( evt->vopcode );
+
+ /* Record command response if applicable */
+ if ( vopcode == intelxl->vopcode ) {
+ memcpy ( &intelxl->vbuf, buf, sizeof ( intelxl->vbuf ) );
+ intelxl->vopcode = 0;
+ intelxl->vret = le32_to_cpu ( evt->vret );
+ if ( intelxl->vret != 0 ) {
+ DBGC ( intelxl, "INTELXL %p admin VF command %#x "
+ "error %d\n", intelxl, vopcode, intelxl->vret );
+ DBGC_HDA ( intelxl, virt_to_bus ( evt ), evt,
+ sizeof ( *evt ) );
+ DBGC_HDA ( intelxl, virt_to_bus ( buf ), buf,
+ le16_to_cpu ( evt->len ) );
+ }
+ return;
+ }
+
+ /* Handle unsolicited events */
+ switch ( vopcode ) {
+ case INTELXL_ADMIN_VF_STATUS:
+ intelxlvf_admin_status ( netdev, &buf->stat );
+ break;
+ default:
+ DBGC ( intelxl, "INTELXL %p unrecognised VF event %#x:\n",
+ intelxl, vopcode );
+ DBGC_HDA ( intelxl, 0, evt, sizeof ( *evt ) );
+ DBGC_HDA ( intelxl, 0, buf, le16_to_cpu ( evt->len ) );
+ break;
+ }
+}
+
+/**
+ * Get resources
+ *
+ * @v netdev Network device
+ * @ret rc Return status code
+ */
+static int intelxlvf_admin_get_resources ( struct net_device *netdev ) {
+ struct intelxl_nic *intelxl = netdev->priv;
+ struct intelxl_admin_descriptor *cmd;
+ struct intelxl_admin_vf_get_resources_buffer *res;
+ int rc;
+
+ /* Populate descriptor */
+ cmd = intelxl_admin_command_descriptor ( intelxl );
+ cmd->vopcode = cpu_to_le32 ( INTELXL_ADMIN_VF_GET_RESOURCES );
+
+ /* Issue command */
+ if ( ( rc = intelxlvf_admin_command ( netdev ) ) != 0 )
+ return rc;
+
+ /* Parse response */
+ res = &intelxl->vbuf.res;
+ intelxl->vsi = le16_to_cpu ( res->vsi );
+ memcpy ( netdev->hw_addr, res->mac, ETH_ALEN );
+ DBGC ( intelxl, "INTELXL %p VSI %#04x\n", intelxl, intelxl->vsi );
+
+ return 0;
+}
+
+/******************************************************************************
+ *
+ * Network device interface
+ *
+ ******************************************************************************
+ */
+
+/**
+ * Configure queues
+ *
+ * @v netdev Network device
+ * @ret rc Return status code
+ */
+static int intelxlvf_admin_configure ( struct net_device *netdev ) {
+ struct intelxl_nic *intelxl = netdev->priv;
+ struct intelxl_admin_descriptor *cmd;
+ union intelxl_admin_buffer *buf;
+ int rc;
+
+ /* Populate descriptor */
+ cmd = intelxl_admin_command_descriptor ( intelxl );
+ cmd->vopcode = cpu_to_le32 ( INTELXL_ADMIN_VF_CONFIGURE );
+ cmd->flags = cpu_to_le16 ( INTELXL_ADMIN_FL_RD | INTELXL_ADMIN_FL_BUF );
+ cmd->len = cpu_to_le16 ( sizeof ( buf->cfg ) );
+ buf = intelxl_admin_command_buffer ( intelxl );
+ buf->cfg.vsi = cpu_to_le16 ( intelxl->vsi );
+ buf->cfg.count = cpu_to_le16 ( 1 );
+ buf->cfg.tx.vsi = cpu_to_le16 ( intelxl->vsi );
+ buf->cfg.tx.count = cpu_to_le16 ( INTELXL_TX_NUM_DESC );
+ buf->cfg.tx.base = cpu_to_le64 ( virt_to_bus ( intelxl->tx.desc.raw ) );
+ buf->cfg.rx.vsi = cpu_to_le16 ( intelxl->vsi );
+ buf->cfg.rx.count = cpu_to_le32 ( INTELXL_RX_NUM_DESC );
+ buf->cfg.rx.len = cpu_to_le32 ( intelxl->mfs );
+ buf->cfg.rx.mfs = cpu_to_le32 ( intelxl->mfs );
+ buf->cfg.rx.base = cpu_to_le64 ( virt_to_bus ( intelxl->rx.desc.raw ) );
+
+ /* Issue command */
+ if ( ( rc = intelxlvf_admin_command ( netdev ) ) != 0 )
+ return rc;
+
+ return 0;
+}
+
+/**
+ * Configure IRQ mapping
+ *
+ * @v netdev Network device
+ * @ret rc Return status code
+ */
+static int intelxlvf_admin_irq_map ( struct net_device *netdev ) {
+ struct intelxl_nic *intelxl = netdev->priv;
+ struct intelxl_admin_descriptor *cmd;
+ union intelxl_admin_buffer *buf;
+ int rc;
+
+ /* Populate descriptor */
+ cmd = intelxl_admin_command_descriptor ( intelxl );
+ cmd->vopcode = cpu_to_le32 ( INTELXL_ADMIN_VF_IRQ_MAP );
+ cmd->flags = cpu_to_le16 ( INTELXL_ADMIN_FL_RD | INTELXL_ADMIN_FL_BUF );
+ cmd->len = cpu_to_le16 ( sizeof ( buf->irq ) );
+ buf = intelxl_admin_command_buffer ( intelxl );
+ buf->irq.count = cpu_to_le16 ( 1 );
+ buf->irq.vsi = cpu_to_le16 ( intelxl->vsi );
+ buf->irq.rxmap = cpu_to_le16 ( 0x0001 );
+ buf->irq.txmap = cpu_to_le16 ( 0x0001 );
+
+ /* Issue command */
+ if ( ( rc = intelxlvf_admin_command ( netdev ) ) != 0 )
+ return rc;
+
+ return 0;
+}
+
+/**
+ * Enable/disable queues
+ *
+ * @v netdev Network device
+ * @v enable Enable queues
+ * @ret rc Return status code
+ */
+static int intelxlvf_admin_queues ( struct net_device *netdev, int enable ) {
+ struct intelxl_nic *intelxl = netdev->priv;
+ struct intelxl_admin_descriptor *cmd;
+ union intelxl_admin_buffer *buf;
+ int rc;
+
+ /* Populate descriptor */
+ cmd = intelxl_admin_command_descriptor ( intelxl );
+ cmd->vopcode = ( enable ? cpu_to_le32 ( INTELXL_ADMIN_VF_ENABLE ) :
+ cpu_to_le32 ( INTELXL_ADMIN_VF_DISABLE ) );
+ cmd->flags = cpu_to_le16 ( INTELXL_ADMIN_FL_RD | INTELXL_ADMIN_FL_BUF );
+ cmd->len = cpu_to_le16 ( sizeof ( buf->queues ) );
+ buf = intelxl_admin_command_buffer ( intelxl );
+ buf->queues.vsi = cpu_to_le16 ( intelxl->vsi );
+ buf->queues.rx = cpu_to_le32 ( 1 );
+ buf->queues.tx = cpu_to_le32 ( 1 );
+
+ /* Issue command */
+ if ( ( rc = intelxlvf_admin_command ( netdev ) ) != 0 )
+ return rc;
+
+ return 0;
+}
+
+/**
+ * Configure promiscuous mode
+ *
+ * @v netdev Network device
+ * @ret rc Return status code
+ */
+static int intelxlvf_admin_promisc ( struct net_device *netdev ) {
+ struct intelxl_nic *intelxl = netdev->priv;
+ struct intelxl_admin_descriptor *cmd;
+ union intelxl_admin_buffer *buf;
+ int rc;
+
+ /* Populate descriptor */
+ cmd = intelxl_admin_command_descriptor ( intelxl );
+ cmd->vopcode = cpu_to_le32 ( INTELXL_ADMIN_VF_PROMISC );
+ cmd->flags = cpu_to_le16 ( INTELXL_ADMIN_FL_RD | INTELXL_ADMIN_FL_BUF );
+ cmd->len = cpu_to_le16 ( sizeof ( buf->promisc ) );
+ buf = intelxl_admin_command_buffer ( intelxl );
+ buf->promisc.vsi = cpu_to_le16 ( intelxl->vsi );
+ buf->promisc.flags = cpu_to_le16 ( INTELXL_ADMIN_PROMISC_FL_UNICAST |
+ INTELXL_ADMIN_PROMISC_FL_MULTICAST );
+
+ /* Issue command */
+ if ( ( rc = intelxlvf_admin_command ( netdev ) ) != 0 )
+ return rc;
+
+ return 0;
+}
+
+/**
+ * Open network device
+ *
+ * @v netdev Network device
+ * @ret rc Return status code
+ */
+static int intelxlvf_open ( struct net_device *netdev ) {
+ struct intelxl_nic *intelxl = netdev->priv;
+ int rc;
+
+ /* Calculate maximum frame size */
+ intelxl->mfs = ( ( ETH_HLEN + netdev->mtu + 4 /* CRC */ +
+ INTELXL_ALIGN - 1 ) & ~( INTELXL_ALIGN - 1 ) );
+
+ /* Allocate transmit descriptor ring */
+ if ( ( rc = intelxl_alloc_ring ( intelxl, &intelxl->tx ) ) != 0 )
+ goto err_alloc_tx;
+
+ /* Allocate receive descriptor ring */
+ if ( ( rc = intelxl_alloc_ring ( intelxl, &intelxl->rx ) ) != 0 )
+ goto err_alloc_rx;
+
+ /* Configure queues */
+ if ( ( rc = intelxlvf_admin_configure ( netdev ) ) != 0 )
+ goto err_configure;
+
+ /* Configure IRQ map */
+ if ( ( rc = intelxlvf_admin_irq_map ( netdev ) ) != 0 )
+ goto err_irq_map;
+
+ /* Enable queues */
+ if ( ( rc = intelxlvf_admin_queues ( netdev, 1 ) ) != 0 )
+ goto err_enable;
+
+ /* Configure promiscuous mode */
+ if ( ( rc = intelxlvf_admin_promisc ( netdev ) ) != 0 )
+ goto err_promisc;
+
+ return 0;
+
+ err_promisc:
+ intelxlvf_admin_queues ( netdev, INTELXL_ADMIN_VF_DISABLE );
+ err_enable:
+ err_irq_map:
+ err_configure:
+ intelxl_free_ring ( intelxl, &intelxl->rx );
+ err_alloc_rx:
+ intelxl_free_ring ( intelxl, &intelxl->tx );
+ err_alloc_tx:
+ return rc;
+}
+
+/**
+ * Close network device
+ *
+ * @v netdev Network device
+ */
+static void intelxlvf_close ( struct net_device *netdev ) {
+ struct intelxl_nic *intelxl = netdev->priv;
+ int rc;
+
+ /* Disable queues */
+ if ( ( rc = intelxlvf_admin_queues ( netdev, 0 ) ) != 0 ) {
+ /* Leak memory; there's nothing else we can do */
+ return;
+ }
+
+ /* Free receive descriptor ring */
+ intelxl_free_ring ( intelxl, &intelxl->rx );
+
+ /* Free transmit descriptor ring */
+ intelxl_free_ring ( intelxl, &intelxl->tx );
+
+ /* Discard any unused receive buffers */
+ intelxl_empty_rx ( intelxl );
+}
+
+/** Network device operations */
+static struct net_device_operations intelxlvf_operations = {
+ .open = intelxlvf_open,
+ .close = intelxlvf_close,
+ .transmit = intelxl_transmit,
+ .poll = intelxl_poll,
+};
+
+/******************************************************************************
+ *
+ * PCI interface
+ *
+ ******************************************************************************
+ */
+
+/**
+ * Probe PCI device
+ *
+ * @v pci PCI device
+ * @ret rc Return status code
+ */
+static int intelxlvf_probe ( struct pci_device *pci ) {
+ struct net_device *netdev;
+ struct intelxl_nic *intelxl;
+ int rc;
+
+ /* Allocate and initialise net device */
+ netdev = alloc_etherdev ( sizeof ( *intelxl ) );
+ if ( ! netdev ) {
+ rc = -ENOMEM;
+ goto err_alloc;
+ }
+ netdev_init ( netdev, &intelxlvf_operations );
+ intelxl = netdev->priv;
+ pci_set_drvdata ( pci, netdev );
+ netdev->dev = &pci->dev;
+ memset ( intelxl, 0, sizeof ( *intelxl ) );
+ intelxl->intr = INTELXLVF_VFINT_DYN_CTL0;
+ intelxl_init_admin ( &intelxl->command, INTELXLVF_ADMIN,
+ &intelxlvf_admin_command_offsets );
+ intelxl_init_admin ( &intelxl->event, INTELXLVF_ADMIN,
+ &intelxlvf_admin_event_offsets );
+ intelxlvf_init_ring ( &intelxl->tx, INTELXL_TX_NUM_DESC,
+ sizeof ( intelxl->tx.desc.tx[0] ),
+ INTELXLVF_QTX_TAIL );
+ intelxlvf_init_ring ( &intelxl->rx, INTELXL_RX_NUM_DESC,
+ sizeof ( intelxl->rx.desc.rx[0] ),
+ INTELXLVF_QRX_TAIL );
+
+ /* Fix up PCI device */
+ adjust_pci_device ( pci );
+
+ /* Map registers */
+ intelxl->regs = ioremap ( pci->membase, INTELXLVF_BAR_SIZE );
+ if ( ! intelxl->regs ) {
+ rc = -ENODEV;
+ goto err_ioremap;
+ }
+
+ /* Locate PCI Express capability */
+ intelxl->exp = pci_find_capability ( pci, PCI_CAP_ID_EXP );
+ if ( ! intelxl->exp ) {
+ DBGC ( intelxl, "INTELXL %p missing PCIe capability\n",
+ intelxl );
+ rc = -ENXIO;
+ goto err_exp;
+ }
+
+ /* Reset the function via PCIe FLR */
+ intelxlvf_reset_flr ( intelxl, pci );
+
+ /* Enable MSI-X dummy interrupt */
+ if ( ( rc = intelxl_msix_enable ( intelxl, pci ) ) != 0 )
+ goto err_msix;
+
+ /* Open admin queues */
+ if ( ( rc = intelxl_open_admin ( intelxl ) ) != 0 )
+ goto err_open_admin;
+
+ /* Reset the function via admin queue */
+ if ( ( rc = intelxlvf_reset_admin ( intelxl ) ) != 0 )
+ goto err_reset_admin;
+
+ /* Get MAC address */
+ if ( ( rc = intelxlvf_admin_get_resources ( netdev ) ) != 0 )
+ goto err_get_resources;
+
+ /* Register network device */
+ if ( ( rc = register_netdev ( netdev ) ) != 0 )
+ goto err_register_netdev;
+
+ return 0;
+
+ unregister_netdev ( netdev );
+ err_register_netdev:
+ err_get_resources:
+ err_reset_admin:
+ intelxl_close_admin ( intelxl );
+ err_open_admin:
+ intelxl_msix_disable ( intelxl, pci );
+ err_msix:
+ intelxlvf_reset_flr ( intelxl, pci );
+ err_exp:
+ iounmap ( intelxl->regs );
+ err_ioremap:
+ netdev_nullify ( netdev );
+ netdev_put ( netdev );
+ err_alloc:
+ return rc;
+}
+
+/**
+ * Remove PCI device
+ *
+ * @v pci PCI device
+ */
+static void intelxlvf_remove ( struct pci_device *pci ) {
+ struct net_device *netdev = pci_get_drvdata ( pci );
+ struct intelxl_nic *intelxl = netdev->priv;
+
+ /* Unregister network device */
+ unregister_netdev ( netdev );
+
+ /* Reset the function via admin queue */
+ intelxlvf_reset_admin ( intelxl );
+
+ /* Close admin queues */
+ intelxl_close_admin ( intelxl );
+
+ /* Disable MSI-X dummy interrupt */
+ intelxl_msix_disable ( intelxl, pci );
+
+ /* Reset the function via PCIe FLR */
+ intelxlvf_reset_flr ( intelxl, pci );
+
+ /* Free network device */
+ iounmap ( intelxl->regs );
+ netdev_nullify ( netdev );
+ netdev_put ( netdev );
+}
+
+/** PCI device IDs */
+static struct pci_device_id intelxlvf_nics[] = {
+ PCI_ROM ( 0x8086, 0x154c, "xl710-vf", "XL710 VF", 0 ),
+ PCI_ROM ( 0x8086, 0x1571, "xl710-vf-hv", "XL710 VF (Hyper-V)", 0 ),
+ PCI_ROM ( 0x8086, 0x1889, "xl710-vf-ad", "XL710 VF (adaptive)", 0 ),
+ PCI_ROM ( 0x8086, 0x37cd, "x722-vf", "X722 VF", 0 ),
+ PCI_ROM ( 0x8086, 0x37d9, "x722-vf-hv", "X722 VF (Hyper-V)", 0 ),
+};
+
+/** PCI driver */
+struct pci_driver intelxlvf_driver __pci_driver = {
+ .ids = intelxlvf_nics,
+ .id_count = ( sizeof ( intelxlvf_nics ) /
+ sizeof ( intelxlvf_nics[0] ) ),
+ .probe = intelxlvf_probe,
+ .remove = intelxlvf_remove,
+};
projects / thirdparty / ipxe.git / commitdiff
