david/ipxe
david
/
ipxe
Archived
1
0
Fork 0
Code
This repository has been archived on 2020-12-06. You can view files and clone it, but cannot push or open issues or pull requests.
ipxe/src/drivers/net/vmxnet3.c

722 lines
20 KiB
C
Raw Permalink Blame History

/*
* Copyright (C) 2011 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 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 <stdint.h>
#include <errno.h>
#include <assert.h>
#include <byteswap.h>
#include <ipxe/pci.h>
#include <ipxe/io.h>
#include <ipxe/malloc.h>
#include <ipxe/profile.h>
#include <ipxe/iobuf.h>
#include <ipxe/netdevice.h>
#include <ipxe/if_ether.h>
#include <ipxe/ethernet.h>
#include "vmxnet3.h"
/**
* @file
*
* VMware vmxnet3 virtual NIC driver
*
*/
/** VM command profiler */
static struct profiler vmxnet3_vm_command_profiler __profiler =
{ .name = "vmxnet3.vm_command" };
/** VM transmit profiler */
static struct profiler vmxnet3_vm_tx_profiler __profiler =
{ .name = "vmxnet3.vm_tx" };
/** VM receive refill profiler */
static struct profiler vmxnet3_vm_refill_profiler __profiler =
{ .name = "vmxnet3.vm_refill" };
/** VM event profiler */
static struct profiler vmxnet3_vm_event_profiler __profiler =
{ .name = "vmxnet3.vm_event" };
/**
* Issue command
*
* @v vmxnet vmxnet3 NIC
* @v command Command to issue
* @ret result Command result
*/
static inline uint32_t vmxnet3_command ( struct vmxnet3_nic *vmxnet,
uint32_t command ) {
uint32_t result;
/* Issue command */
profile_start ( &vmxnet3_vm_command_profiler );
writel ( command, ( vmxnet->vd + VMXNET3_VD_CMD ) );
result = readl ( vmxnet->vd + VMXNET3_VD_CMD );
profile_stop ( &vmxnet3_vm_command_profiler );
profile_exclude ( &vmxnet3_vm_command_profiler );
return result;
}
/**
* Transmit packet
*
* @v netdev Network device
* @v iobuf I/O buffer
* @ret rc Return status code
*/
static int vmxnet3_transmit ( struct net_device *netdev,
struct io_buffer *iobuf ) {
struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
struct vmxnet3_tx_desc *tx_desc;
unsigned int fill;
unsigned int desc_idx;
unsigned int generation;
/* Check that we have a free transmit descriptor */
fill = ( vmxnet->count.tx_prod - vmxnet->count.tx_cons );
if ( fill >= VMXNET3_TX_FILL ) {
DBGC ( vmxnet, "VMXNET3 %p out of transmit descriptors\n",
vmxnet );
return -ENOBUFS;
}
/* Locate transmit descriptor */
desc_idx = ( vmxnet->count.tx_prod % VMXNET3_NUM_TX_DESC );
generation = ( ( vmxnet->count.tx_prod & VMXNET3_NUM_TX_DESC ) ?
0 : cpu_to_le32 ( VMXNET3_TXF_GEN ) );
assert ( vmxnet->tx_iobuf[desc_idx] == NULL );
/* Increment producer counter */
vmxnet->count.tx_prod++;
/* Store I/O buffer for later completion */
vmxnet->tx_iobuf[desc_idx] = iobuf;
/* Populate transmit descriptor */
tx_desc = &vmxnet->dma->tx_desc[desc_idx];
tx_desc->address = cpu_to_le64 ( virt_to_bus ( iobuf->data ) );
tx_desc->flags[0] = ( generation | cpu_to_le32 ( iob_len ( iobuf ) ) );
tx_desc->flags[1] = cpu_to_le32 ( VMXNET3_TXF_CQ | VMXNET3_TXF_EOP );
/* Hand over descriptor to NIC */
wmb();
profile_start ( &vmxnet3_vm_tx_profiler );
writel ( ( vmxnet->count.tx_prod % VMXNET3_NUM_TX_DESC ),
( vmxnet->pt + VMXNET3_PT_TXPROD ) );
profile_stop ( &vmxnet3_vm_tx_profiler );
profile_exclude ( &vmxnet3_vm_tx_profiler );
return 0;
}
/**
* Poll for completed transmissions
*
* @v netdev Network device
*/
static void vmxnet3_poll_tx ( struct net_device *netdev ) {
struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
struct vmxnet3_tx_comp *tx_comp;
struct io_buffer *iobuf;
unsigned int comp_idx;
unsigned int desc_idx;
unsigned int generation;
while ( 1 ) {
/* Look for completed descriptors */
comp_idx = ( vmxnet->count.tx_cons % VMXNET3_NUM_TX_COMP );
generation = ( ( vmxnet->count.tx_cons & VMXNET3_NUM_TX_COMP ) ?
0 : cpu_to_le32 ( VMXNET3_TXCF_GEN ) );
tx_comp = &vmxnet->dma->tx_comp[comp_idx];
if ( generation != ( tx_comp->flags &
cpu_to_le32 ( VMXNET3_TXCF_GEN ) ) ) {
break;
}
/* Increment consumer counter */
vmxnet->count.tx_cons++;
/* Locate corresponding transmit descriptor */
desc_idx = ( le32_to_cpu ( tx_comp->index ) %
VMXNET3_NUM_TX_DESC );
iobuf = vmxnet->tx_iobuf[desc_idx];
if ( ! iobuf ) {
DBGC ( vmxnet, "VMXNET3 %p completed on empty transmit "
"buffer %#x/%#x\n", vmxnet, comp_idx, desc_idx );
netdev_tx_err ( netdev, NULL, -ENOTTY );
continue;
}
/* Remove I/O buffer from transmit queue */
vmxnet->tx_iobuf[desc_idx] = NULL;
/* Report transmission completion to network layer */
DBGC2 ( vmxnet, "VMXNET3 %p completed TX %#x/%#x (len %#zx)\n",
vmxnet, comp_idx, desc_idx, iob_len ( iobuf ) );
netdev_tx_complete ( netdev, iobuf );
}
}
/**
* Flush any uncompleted transmit buffers
*
* @v netdev Network device
*/
static void vmxnet3_flush_tx ( struct net_device *netdev ) {
struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
unsigned int i;
for ( i = 0 ; i < VMXNET3_NUM_TX_DESC ; i++ ) {
if ( vmxnet->tx_iobuf[i] ) {
netdev_tx_complete_err ( netdev, vmxnet->tx_iobuf[i],
-ECANCELED );
vmxnet->tx_iobuf[i] = NULL;
}
}
}
/**
* Refill receive ring
*
* @v netdev Network device
*/
static void vmxnet3_refill_rx ( struct net_device *netdev ) {
struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
struct vmxnet3_rx_desc *rx_desc;
struct io_buffer *iobuf;
unsigned int orig_rx_prod = vmxnet->count.rx_prod;
unsigned int desc_idx;
unsigned int generation;
/* Fill receive ring to specified fill level */
while ( vmxnet->count.rx_fill < VMXNET3_RX_FILL ) {
/* Locate receive descriptor */
desc_idx = ( vmxnet->count.rx_prod % VMXNET3_NUM_RX_DESC );
generation = ( ( vmxnet->count.rx_prod & VMXNET3_NUM_RX_DESC ) ?
0 : cpu_to_le32 ( VMXNET3_RXF_GEN ) );
assert ( vmxnet->rx_iobuf[desc_idx] == NULL );
/* Allocate I/O buffer */
iobuf = alloc_iob ( VMXNET3_MTU + NET_IP_ALIGN );
if ( ! iobuf ) {
/* Non-fatal low memory condition */
break;
}
iob_reserve ( iobuf, NET_IP_ALIGN );
/* Increment producer counter and fill level */
vmxnet->count.rx_prod++;
vmxnet->count.rx_fill++;
/* Store I/O buffer for later completion */
vmxnet->rx_iobuf[desc_idx] = iobuf;
/* Populate receive descriptor */
rx_desc = &vmxnet->dma->rx_desc[desc_idx];
rx_desc->address = cpu_to_le64 ( virt_to_bus ( iobuf->data ) );
rx_desc->flags = ( generation | cpu_to_le32 ( VMXNET3_MTU ) );
}
/* Hand over any new descriptors to NIC */
if ( vmxnet->count.rx_prod != orig_rx_prod ) {
wmb();
profile_start ( &vmxnet3_vm_refill_profiler );
writel ( ( vmxnet->count.rx_prod % VMXNET3_NUM_RX_DESC ),
( vmxnet->pt + VMXNET3_PT_RXPROD ) );
profile_stop ( &vmxnet3_vm_refill_profiler );
profile_exclude ( &vmxnet3_vm_refill_profiler );
}
}
/**
* Poll for received packets
*
* @v netdev Network device
*/
static void vmxnet3_poll_rx ( struct net_device *netdev ) {
struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
struct vmxnet3_rx_comp *rx_comp;
struct io_buffer *iobuf;
unsigned int comp_idx;
unsigned int desc_idx;
unsigned int generation;
size_t len;
while ( 1 ) {
/* Look for completed descriptors */
comp_idx = ( vmxnet->count.rx_cons % VMXNET3_NUM_RX_COMP );
generation = ( ( vmxnet->count.rx_cons & VMXNET3_NUM_RX_COMP ) ?
0 : cpu_to_le32 ( VMXNET3_RXCF_GEN ) );
rx_comp = &vmxnet->dma->rx_comp[comp_idx];
if ( generation != ( rx_comp->flags &
cpu_to_le32 ( VMXNET3_RXCF_GEN ) ) ) {
break;
}
/* Increment consumer counter */
vmxnet->count.rx_cons++;
/* Locate corresponding receive descriptor */
desc_idx = ( le32_to_cpu ( rx_comp->index ) %
VMXNET3_NUM_RX_DESC );
iobuf = vmxnet->rx_iobuf[desc_idx];
if ( ! iobuf ) {
DBGC ( vmxnet, "VMXNET3 %p completed on empty receive "
"buffer %#x/%#x\n", vmxnet, comp_idx, desc_idx );
netdev_rx_err ( netdev, NULL, -ENOTTY );
continue;
}
/* Remove I/O buffer from receive queue */
vmxnet->rx_iobuf[desc_idx] = NULL;
vmxnet->count.rx_fill--;
/* Deliver packet to network layer */
len = ( le32_to_cpu ( rx_comp->len ) &
( VMXNET3_MAX_PACKET_LEN - 1 ) );
DBGC2 ( vmxnet, "VMXNET3 %p completed RX %#x/%#x (len %#zx)\n",
vmxnet, comp_idx, desc_idx, len );
iob_put ( iobuf, len );
netdev_rx ( netdev, iobuf );
}
}
/**
* Flush any uncompleted receive buffers
*
* @v netdev Network device
*/
static void vmxnet3_flush_rx ( struct net_device *netdev ) {
struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
struct io_buffer *iobuf;
unsigned int i;
for ( i = 0 ; i < VMXNET3_NUM_RX_DESC ; i++ ) {
if ( ( iobuf = vmxnet->rx_iobuf[i] ) != NULL ) {
netdev_rx_err ( netdev, iobuf, -ECANCELED );
vmxnet->rx_iobuf[i] = NULL;
}
}
}
/**
* Check link state
*
* @v netdev Network device
*/
static void vmxnet3_check_link ( struct net_device *netdev ) {
struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
uint32_t state;
int link_up;
unsigned int link_speed;
/* Get link state */
state = vmxnet3_command ( vmxnet, VMXNET3_CMD_GET_LINK );
link_up = ( state & 1 );
link_speed = ( state >> 16 );
/* Report link state to network device */
if ( link_up ) {
DBGC ( vmxnet, "VMXNET3 %p link is up at %d Mbps\n",
vmxnet, link_speed );
netdev_link_up ( netdev );
} else {
DBGC ( vmxnet, "VMXNET3 %p link is down\n", vmxnet );
netdev_link_down ( netdev );
}
}
/**
* Poll for events
*
* @v netdev Network device
*/
static void vmxnet3_poll_events ( struct net_device *netdev ) {
struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
uint32_t events;
/* Do nothing unless there are events to process */
if ( ! vmxnet->dma->shared.ecr )
return;
events = le32_to_cpu ( vmxnet->dma->shared.ecr );
/* Acknowledge these events */
profile_start ( &vmxnet3_vm_event_profiler );
writel ( events, ( vmxnet->vd + VMXNET3_VD_ECR ) );
profile_stop ( &vmxnet3_vm_event_profiler );
profile_exclude ( &vmxnet3_vm_event_profiler );
/* Check for link state change */
if ( events & VMXNET3_ECR_LINK ) {
vmxnet3_check_link ( netdev );
events &= ~VMXNET3_ECR_LINK;
}
/* Check for queue errors */
if ( events & ( VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR ) ) {
vmxnet3_command ( vmxnet, VMXNET3_CMD_GET_QUEUE_STATUS );
DBGC ( vmxnet, "VMXNET3 %p queue error status (TX %08x, RX "
"%08x)\n", vmxnet,
le32_to_cpu ( vmxnet->dma->queues.tx.status.error ),
le32_to_cpu ( vmxnet->dma->queues.rx.status.error ) );
/* Report errors to allow for visibility via "ifstat" */
if ( events & VMXNET3_ECR_TQERR )
netdev_tx_err ( netdev, NULL, -EPIPE );
if ( events & VMXNET3_ECR_RQERR )
netdev_rx_err ( netdev, NULL, -EPIPE );
events &= ~( VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR );
}
/* Check for unknown events */
if ( events ) {
DBGC ( vmxnet, "VMXNET3 %p unknown events %08x\n",
vmxnet, events );
/* Report error to allow for visibility via "ifstat" */
netdev_rx_err ( netdev, NULL, -ENODEV );
}
}
/**
* Poll network device
*
* @v netdev Network device
*/
static void vmxnet3_poll ( struct net_device *netdev ) {
vmxnet3_poll_events ( netdev );
vmxnet3_poll_tx ( netdev );
vmxnet3_poll_rx ( netdev );
vmxnet3_refill_rx ( netdev );
}
/**
* Enable/disable interrupts
*
* @v netdev Network device
* @v enable Interrupts should be enabled
*/
static void vmxnet3_irq ( struct net_device *netdev, int enable ) {
struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
DBGC ( vmxnet, "VMXNET3 %p %s IRQ not implemented\n",
vmxnet, ( enable ? "enable" : "disable" ) );
}
/**
* Set MAC address
*
* @v vmxnet vmxnet3 NIC
* @v ll_addr Link-layer address to set
*/
static void vmxnet3_set_ll_addr ( struct vmxnet3_nic *vmxnet,
const void *ll_addr ) {
struct {
uint32_t low;
uint32_t high;
} __attribute__ (( packed )) mac;
memset ( &mac, 0, sizeof ( mac ) );
memcpy ( &mac, ll_addr, ETH_ALEN );
writel ( cpu_to_le32 ( mac.low ), ( vmxnet->vd + VMXNET3_VD_MACL ) );
writel ( cpu_to_le32 ( mac.high ), ( vmxnet->vd + VMXNET3_VD_MACH ) );
}
/**
* Open NIC
*
* @v netdev Network device
* @ret rc Return status code
*/
static int vmxnet3_open ( struct net_device *netdev ) {
struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
struct vmxnet3_shared *shared;
struct vmxnet3_queues *queues;
uint64_t shared_bus;
uint64_t queues_bus;
uint32_t status;
int rc;
/* Allocate DMA areas */
vmxnet->dma = malloc_dma ( sizeof ( *vmxnet->dma ), VMXNET3_DMA_ALIGN );
if ( ! vmxnet->dma ) {
DBGC ( vmxnet, "VMXNET3 %p could not allocate DMA area\n",
vmxnet );
rc = -ENOMEM;
goto err_alloc_dma;
}
memset ( vmxnet->dma, 0, sizeof ( *vmxnet->dma ) );
/* Populate queue descriptors */
queues = &vmxnet->dma->queues;
queues->tx.cfg.desc_address =
cpu_to_le64 ( virt_to_bus ( &vmxnet->dma->tx_desc ) );
queues->tx.cfg.comp_address =
cpu_to_le64 ( virt_to_bus ( &vmxnet->dma->tx_comp ) );
queues->tx.cfg.num_desc = cpu_to_le32 ( VMXNET3_NUM_TX_DESC );
queues->tx.cfg.num_comp = cpu_to_le32 ( VMXNET3_NUM_TX_COMP );
queues->rx.cfg.desc_address[0] =
cpu_to_le64 ( virt_to_bus ( &vmxnet->dma->rx_desc ) );
queues->rx.cfg.comp_address =
cpu_to_le64 ( virt_to_bus ( &vmxnet->dma->rx_comp ) );
queues->rx.cfg.num_desc[0] = cpu_to_le32 ( VMXNET3_NUM_RX_DESC );
queues->rx.cfg.num_comp = cpu_to_le32 ( VMXNET3_NUM_RX_COMP );
queues_bus = virt_to_bus ( queues );
DBGC ( vmxnet, "VMXNET3 %p queue descriptors at %08llx+%zx\n",
vmxnet, queues_bus, sizeof ( *queues ) );
/* Populate shared area */
shared = &vmxnet->dma->shared;
shared->magic = cpu_to_le32 ( VMXNET3_SHARED_MAGIC );
shared->misc.version = cpu_to_le32 ( VMXNET3_VERSION_MAGIC );
shared->misc.version_support = cpu_to_le32 ( VMXNET3_VERSION_SELECT );
shared->misc.upt_version_support =
cpu_to_le32 ( VMXNET3_UPT_VERSION_SELECT );
shared->misc.queue_desc_address = cpu_to_le64 ( queues_bus );
shared->misc.queue_desc_len = cpu_to_le32 ( sizeof ( *queues ) );
shared->misc.mtu = cpu_to_le32 ( VMXNET3_MTU );
shared->misc.num_tx_queues = 1;
shared->misc.num_rx_queues = 1;
shared->interrupt.num_intrs = 1;
shared->interrupt.control = cpu_to_le32 ( VMXNET3_IC_DISABLE_ALL );
shared->rx_filter.mode = cpu_to_le32 ( VMXNET3_RXM_UCAST |
VMXNET3_RXM_BCAST |
VMXNET3_RXM_ALL_MULTI );
shared_bus = virt_to_bus ( shared );
DBGC ( vmxnet, "VMXNET3 %p shared area at %08llx+%zx\n",
vmxnet, shared_bus, sizeof ( *shared ) );
/* Zero counters */
memset ( &vmxnet->count, 0, sizeof ( vmxnet->count ) );
/* Set MAC address */
vmxnet3_set_ll_addr ( vmxnet, &netdev->ll_addr );
/* Pass shared area to device */
writel ( ( shared_bus >> 0 ), ( vmxnet->vd + VMXNET3_VD_DSAL ) );
writel ( ( shared_bus >> 32 ), ( vmxnet->vd + VMXNET3_VD_DSAH ) );
/* Activate device */
if ( ( status = vmxnet3_command ( vmxnet,
VMXNET3_CMD_ACTIVATE_DEV ) ) != 0 ) {
DBGC ( vmxnet, "VMXNET3 %p could not activate (status %#x)\n",
vmxnet, status );
rc = -EIO;
goto err_activate;
}
/* Fill receive ring */
vmxnet3_refill_rx ( netdev );
return 0;
vmxnet3_command ( vmxnet, VMXNET3_CMD_QUIESCE_DEV );
vmxnet3_command ( vmxnet, VMXNET3_CMD_RESET_DEV );
err_activate:
vmxnet3_flush_tx ( netdev );
vmxnet3_flush_rx ( netdev );
free_dma ( vmxnet->dma, sizeof ( *vmxnet->dma ) );
err_alloc_dma:
return rc;
}
/**
* Close NIC
*
* @v netdev Network device
*/
static void vmxnet3_close ( struct net_device *netdev ) {
struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
vmxnet3_command ( vmxnet, VMXNET3_CMD_QUIESCE_DEV );
vmxnet3_command ( vmxnet, VMXNET3_CMD_RESET_DEV );
vmxnet3_flush_tx ( netdev );
vmxnet3_flush_rx ( netdev );
free_dma ( vmxnet->dma, sizeof ( *vmxnet->dma ) );
}
/** vmxnet3 net device operations */
static struct net_device_operations vmxnet3_operations = {
.open = vmxnet3_open,
.close = vmxnet3_close,
.transmit = vmxnet3_transmit,
.poll = vmxnet3_poll,
.irq = vmxnet3_irq,
};
/**
* Check version
*
* @v vmxnet vmxnet3 NIC
* @ret rc Return status code
*/
static int vmxnet3_check_version ( struct vmxnet3_nic *vmxnet ) {
uint32_t version;
uint32_t upt_version;
/* Read version */
version = readl ( vmxnet->vd + VMXNET3_VD_VRRS );
upt_version = readl ( vmxnet->vd + VMXNET3_VD_UVRS );
DBGC ( vmxnet, "VMXNET3 %p is version %d (UPT version %d)\n",
vmxnet, version, upt_version );
/* Inform NIC of driver version */
writel ( VMXNET3_VERSION_SELECT, ( vmxnet->vd + VMXNET3_VD_VRRS ) );
writel ( VMXNET3_UPT_VERSION_SELECT, ( vmxnet->vd + VMXNET3_VD_UVRS ) );
return 0;
}
/**
* Get permanent MAC address
*
* @v vmxnet vmxnet3 NIC
* @v hw_addr Hardware address to fill in
*/
static void vmxnet3_get_hw_addr ( struct vmxnet3_nic *vmxnet, void *hw_addr ) {
struct {
uint32_t low;
uint32_t high;
} __attribute__ (( packed )) mac;
mac.low = le32_to_cpu ( vmxnet3_command ( vmxnet,
VMXNET3_CMD_GET_PERM_MAC_LO ) );
mac.high = le32_to_cpu ( vmxnet3_command ( vmxnet,
VMXNET3_CMD_GET_PERM_MAC_HI ) );
memcpy ( hw_addr, &mac, ETH_ALEN );
}
/**
* Probe PCI device
*
* @v pci PCI device
* @v id PCI ID
* @ret rc Return status code
*/
static int vmxnet3_probe ( struct pci_device *pci ) {
struct net_device *netdev;
struct vmxnet3_nic *vmxnet;
int rc;
/* Allocate network device */
netdev = alloc_etherdev ( sizeof ( *vmxnet ) );
if ( ! netdev ) {
rc = -ENOMEM;
goto err_alloc_etherdev;
}
netdev_init ( netdev, &vmxnet3_operations );
vmxnet = netdev_priv ( netdev );
pci_set_drvdata ( pci, netdev );
netdev->dev = &pci->dev;
memset ( vmxnet, 0, sizeof ( *vmxnet ) );
/* Fix up PCI device */
adjust_pci_device ( pci );
/* Map PCI BARs */
vmxnet->pt = ioremap ( pci_bar_start ( pci, VMXNET3_PT_BAR ),
VMXNET3_PT_LEN );
if ( ! vmxnet->pt ) {
rc = -ENODEV;
goto err_ioremap_pt;
}
vmxnet->vd = ioremap ( pci_bar_start ( pci, VMXNET3_VD_BAR ),
VMXNET3_VD_LEN );
if ( ! vmxnet->vd ) {
rc = -ENODEV;
goto err_ioremap_vd;
}
/* Version check */
if ( ( rc = vmxnet3_check_version ( vmxnet ) ) != 0 )
goto err_check_version;
/* Reset device */
if ( ( rc = vmxnet3_command ( vmxnet, VMXNET3_CMD_RESET_DEV ) ) != 0 )
goto err_reset;
/* Read initial MAC address */
vmxnet3_get_hw_addr ( vmxnet, &netdev->hw_addr );
/* Register network device */
if ( ( rc = register_netdev ( netdev ) ) != 0 ) {
DBGC ( vmxnet, "VMXNET3 %p could not register net device: "
"%s\n", vmxnet, strerror ( rc ) );
goto err_register_netdev;
}
/* Get initial link state */
vmxnet3_check_link ( netdev );
return 0;
unregister_netdev ( netdev );
err_register_netdev:
err_reset:
err_check_version:
iounmap ( vmxnet->vd );
err_ioremap_vd:
iounmap ( vmxnet->pt );
err_ioremap_pt:
netdev_nullify ( netdev );
netdev_put ( netdev );
err_alloc_etherdev:
return rc;
}
/**
* Remove PCI device
*
* @v pci PCI device
*/
static void vmxnet3_remove ( struct pci_device *pci ) {
struct net_device *netdev = pci_get_drvdata ( pci );
struct vmxnet3_nic *vmxnet = netdev_priv ( netdev );
unregister_netdev ( netdev );
iounmap ( vmxnet->vd );
iounmap ( vmxnet->pt );
netdev_nullify ( netdev );
netdev_put ( netdev );
}
/** vmxnet3 PCI IDs */
static struct pci_device_id vmxnet3_nics[] = {
PCI_ROM ( 0x15ad, 0x07b0, "vmxnet3", "vmxnet3 virtual NIC", 0 ),
};
/** vmxnet3 PCI driver */
struct pci_driver vmxnet3_driver __pci_driver = {
.ids = vmxnet3_nics,
.id_count = ( sizeof ( vmxnet3_nics ) / sizeof ( vmxnet3_nics[0] ) ),
.probe = vmxnet3_probe,
.remove = vmxnet3_remove,
};
View Git Blame Copy Permalink