d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
4092996774
freebsd-skq/sys/dev/ixgb/if_ixgb.c
Gleb Smirnoff 4092996774 Big polling(4) cleanup. 
o Axe poll in trap.

o Axe IFF_POLLING flag from if_flags.

o Rework revision 1.21 (Giant removal), in such a way that
  poll_mtx is not dropped during call to polling handler.
  This fixes problem with idle polling.

o Make registration and deregistration from polling in a
  functional way, insted of next tick/interrupt.

o Obsolete kern.polling.enable. Polling is turned on/off
  with ifconfig.

Detailed kern_poll.c changes:
  - Remove polling handler flags, introduced in 1.21. The are not
    needed now.
  - Forget and do not check if_flags, if_capenable and if_drv_flags.
  - Call all registered polling handlers unconditionally.
  - Do not drop poll_mtx, when entering polling handlers.
  - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx.
  - In netisr_poll() axe the block, where polling code asks drivers
    to unregister.
  - In netisr_poll() and ether_poll() do polling always, if any
    handlers are present.
  - In ether_poll_[de]register() remove a lot of error hiding code. Assert
    that arguments are correct, instead.
  - In ether_poll_[de]register() use standard return values in case of
    error or success.
  - Introduce poll_switch() that is a sysctl handler for kern.polling.enable.
    poll_switch() goes through interface list and enabled/disables polling.
    A message that kern.polling.enable is deprecated is printed.

Detailed driver changes:
  - On attach driver announces IFCAP_POLLING in if_capabilities, but
    not in if_capenable.
  - On detach driver calls ether_poll_deregister() if polling is enabled.
  - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING
    flag. If there is no, then unlocks and returns.
  - In ioctl handler driver checks for IFCAP_POLLING flag requested to
    be set or cleared. Driver first calls ether_poll_[de]register(), then
    obtains driver lock and [dis/en]ables interrupts.
  - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable.
    If present, then returns.This is important to protect from spurious
    interrupts.

Reviewed by:	ru, sam, jhb
2005-10-01 18:56:19 +00:00

2515 lines
71 KiB
C
Raw Blame History

/*******************************************************************************
Copyright (c) 2001-2004, Intel Corporation
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the Intel Corporation nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
***************************************************************************/
/*$FreeBSD$*/
#include <dev/ixgb/if_ixgb.h>
/*********************************************************************
* Set this to one to display debug statistics
*********************************************************************/
int ixgb_display_debug_stats = 0;
/*********************************************************************
* Linked list of board private structures for all NICs found
*********************************************************************/
struct adapter *ixgb_adapter_list = NULL;
/*********************************************************************
* Driver version
*********************************************************************/
char ixgb_driver_version[] = "1.0.6";
char ixgb_copyright[] = "Copyright (c) 2001-2004 Intel Corporation.";
/*********************************************************************
* PCI Device ID Table
*
* Used by probe to select devices to load on
* Last field stores an index into ixgb_strings
* Last entry must be all 0s
*
* { Vendor ID, Device ID, SubVendor ID, SubDevice ID, String Index }
*********************************************************************/
static ixgb_vendor_info_t ixgb_vendor_info_array[] =
{
/* Intel(R) PRO/10000 Network Connection */
{INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX, PCI_ANY_ID, PCI_ANY_ID, 0},
{INTEL_VENDOR_ID, IXGB_DEVICE_ID_82597EX_SR, PCI_ANY_ID, PCI_ANY_ID, 0},
/* required last entry */
{0, 0, 0, 0, 0}
};
/*********************************************************************
* Table of branding strings for all supported NICs.
*********************************************************************/
static char *ixgb_strings[] = {
"Intel(R) PRO/10GbE Network Driver"
};
/*********************************************************************
* Function prototypes
*********************************************************************/
static int ixgb_probe(device_t);
static int ixgb_attach(device_t);
static int ixgb_detach(device_t);
static int ixgb_shutdown(device_t);
static void ixgb_intr(void *);
static void ixgb_start(struct ifnet *);
static void ixgb_start_locked(struct ifnet *);
static int ixgb_ioctl(struct ifnet *, IOCTL_CMD_TYPE, caddr_t);
static void ixgb_watchdog(struct ifnet *);
static void ixgb_init(void *);
static void ixgb_init_locked(struct adapter *);
static void ixgb_stop(void *);
static void ixgb_media_status(struct ifnet *, struct ifmediareq *);
static int ixgb_media_change(struct ifnet *);
static void ixgb_identify_hardware(struct adapter *);
static int ixgb_allocate_pci_resources(struct adapter *);
static void ixgb_free_pci_resources(struct adapter *);
static void ixgb_local_timer(void *);
static int ixgb_hardware_init(struct adapter *);
static void ixgb_setup_interface(device_t, struct adapter *);
static int ixgb_setup_transmit_structures(struct adapter *);
static void ixgb_initialize_transmit_unit(struct adapter *);
static int ixgb_setup_receive_structures(struct adapter *);
static void ixgb_initialize_receive_unit(struct adapter *);
static void ixgb_enable_intr(struct adapter *);
static void ixgb_disable_intr(struct adapter *);
static void ixgb_free_transmit_structures(struct adapter *);
static void ixgb_free_receive_structures(struct adapter *);
static void ixgb_update_stats_counters(struct adapter *);
static void ixgb_clean_transmit_interrupts(struct adapter *);
static int ixgb_allocate_receive_structures(struct adapter *);
static int ixgb_allocate_transmit_structures(struct adapter *);
static void ixgb_process_receive_interrupts(struct adapter *, int);
static void
ixgb_receive_checksum(struct adapter *,
struct ixgb_rx_desc * rx_desc,
struct mbuf *);
static void
ixgb_transmit_checksum_setup(struct adapter *,
struct mbuf *,
u_int8_t *);
static void ixgb_set_promisc(struct adapter *);
static void ixgb_disable_promisc(struct adapter *);
static void ixgb_set_multi(struct adapter *);
static void ixgb_print_hw_stats(struct adapter *);
static void ixgb_print_link_status(struct adapter *);
static int
ixgb_get_buf(int i, struct adapter *,
struct mbuf *);
static void ixgb_enable_vlans(struct adapter * adapter);
static int ixgb_encap(struct adapter * adapter, struct mbuf * m_head);
static int ixgb_sysctl_stats(SYSCTL_HANDLER_ARGS);
static int
ixgb_dma_malloc(struct adapter *, bus_size_t,
struct ixgb_dma_alloc *, int);
static void ixgb_dma_free(struct adapter *, struct ixgb_dma_alloc *);
#ifdef DEVICE_POLLING
static poll_handler_t ixgb_poll;
#endif
/*********************************************************************
* FreeBSD Device Interface Entry Points
*********************************************************************/
static device_method_t ixgb_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ixgb_probe),
DEVMETHOD(device_attach, ixgb_attach),
DEVMETHOD(device_detach, ixgb_detach),
DEVMETHOD(device_shutdown, ixgb_shutdown),
{0, 0}
};
static driver_t ixgb_driver = {
"ixgb", ixgb_methods, sizeof(struct adapter),
};
static devclass_t ixgb_devclass;
DRIVER_MODULE(if_ixgb, pci, ixgb_driver, ixgb_devclass, 0, 0);
MODULE_DEPEND(if_ixgb, pci, 1, 1, 1);
MODULE_DEPEND(if_ixgb, ether, 1, 1, 1);
/* some defines for controlling descriptor fetches in h/w */
#define RXDCTL_PTHRESH_DEFAULT 128 /* chip considers prefech below this */
#define RXDCTL_HTHRESH_DEFAULT 16 /* chip will only prefetch if tail is
* pushed this many descriptors from
* head */
#define RXDCTL_WTHRESH_DEFAULT 0 /* chip writes back at this many or RXT0 */
/*********************************************************************
* Device identification routine
*
* ixgb_probe determines if the driver should be loaded on
* adapter based on PCI vendor/device id of the adapter.
*
* return 0 on success, positive on failure
*********************************************************************/
static int
ixgb_probe(device_t dev)
{
ixgb_vendor_info_t *ent;
u_int16_t pci_vendor_id = 0;
u_int16_t pci_device_id = 0;
u_int16_t pci_subvendor_id = 0;
u_int16_t pci_subdevice_id = 0;
char adapter_name[60];
INIT_DEBUGOUT("ixgb_probe: begin");
pci_vendor_id = pci_get_vendor(dev);
if (pci_vendor_id != IXGB_VENDOR_ID)
return (ENXIO);
pci_device_id = pci_get_device(dev);
pci_subvendor_id = pci_get_subvendor(dev);
pci_subdevice_id = pci_get_subdevice(dev);
ent = ixgb_vendor_info_array;
while (ent->vendor_id != 0) {
if ((pci_vendor_id == ent->vendor_id) &&
(pci_device_id == ent->device_id) &&
((pci_subvendor_id == ent->subvendor_id) ||
(ent->subvendor_id == PCI_ANY_ID)) &&
((pci_subdevice_id == ent->subdevice_id) ||
(ent->subdevice_id == PCI_ANY_ID))) {
sprintf(adapter_name, "%s, Version - %s",
ixgb_strings[ent->index],
ixgb_driver_version);
device_set_desc_copy(dev, adapter_name);
return (BUS_PROBE_DEFAULT);
}
ent++;
}
return (ENXIO);
}
/*********************************************************************
* Device initialization routine
*
* The attach entry point is called when the driver is being loaded.
* This routine identifies the type of hardware, allocates all resources
* and initializes the hardware.
*
* return 0 on success, positive on failure
*********************************************************************/
static int
ixgb_attach(device_t dev)
{
struct adapter *adapter;
int tsize, rsize;
int error = 0;
printf("ixgb%d: %s\n", device_get_unit(dev), ixgb_copyright);
INIT_DEBUGOUT("ixgb_attach: begin");
/* Allocate, clear, and link in our adapter structure */
if (!(adapter = device_get_softc(dev))) {
printf("ixgb: adapter structure allocation failed\n");
return (ENOMEM);
}
bzero(adapter, sizeof(struct adapter));
adapter->dev = dev;
adapter->osdep.dev = dev;
adapter->unit = device_get_unit(dev);
IXGB_LOCK_INIT(adapter, device_get_nameunit(dev));
if (ixgb_adapter_list != NULL)
ixgb_adapter_list->prev = adapter;
adapter->next = ixgb_adapter_list;
ixgb_adapter_list = adapter;
/* SYSCTL APIs */
SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
OID_AUTO, "stats", CTLTYPE_INT | CTLFLAG_RW,
(void *)adapter, 0,
ixgb_sysctl_stats, "I", "Statistics");
callout_init(&adapter->timer, CALLOUT_MPSAFE);
/* Determine hardware revision */
ixgb_identify_hardware(adapter);
/* Parameters (to be read from user) */
adapter->num_tx_desc = IXGB_MAX_TXD;
adapter->num_rx_desc = IXGB_MAX_RXD;
adapter->tx_int_delay = TIDV;
adapter->rx_int_delay = RDTR;
adapter->rx_buffer_len = IXGB_RXBUFFER_2048;
adapter->hw.fc.high_water = FCRTH;
adapter->hw.fc.low_water = FCRTL;
adapter->hw.fc.pause_time = FCPAUSE;
adapter->hw.fc.send_xon = TRUE;
adapter->hw.fc.type = FLOW_CONTROL;
/* Set the max frame size assuming standard ethernet sized frames */
adapter->hw.max_frame_size =
ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN;
if (ixgb_allocate_pci_resources(adapter)) {
printf("ixgb%d: Allocation of PCI resources failed\n",
adapter->unit);
error = ENXIO;
goto err_pci;
}
tsize = IXGB_ROUNDUP(adapter->num_tx_desc *
sizeof(struct ixgb_tx_desc), 4096);
/* Allocate Transmit Descriptor ring */
if (ixgb_dma_malloc(adapter, tsize, &adapter->txdma, BUS_DMA_NOWAIT)) {
printf("ixgb%d: Unable to allocate TxDescriptor memory\n",
adapter->unit);
error = ENOMEM;
goto err_tx_desc;
}
adapter->tx_desc_base = (struct ixgb_tx_desc *) adapter->txdma.dma_vaddr;
rsize = IXGB_ROUNDUP(adapter->num_rx_desc *
sizeof(struct ixgb_rx_desc), 4096);
/* Allocate Receive Descriptor ring */
if (ixgb_dma_malloc(adapter, rsize, &adapter->rxdma, BUS_DMA_NOWAIT)) {
printf("ixgb%d: Unable to allocate rx_desc memory\n",
adapter->unit);
error = ENOMEM;
goto err_rx_desc;
}
adapter->rx_desc_base = (struct ixgb_rx_desc *) adapter->rxdma.dma_vaddr;
/* Initialize the hardware */
if (ixgb_hardware_init(adapter)) {
printf("ixgb%d: Unable to initialize the hardware\n",
adapter->unit);
error = EIO;
goto err_hw_init;
}
/* Setup OS specific network interface */
ixgb_setup_interface(dev, adapter);
/* Initialize statistics */
ixgb_clear_hw_cntrs(&adapter->hw);
ixgb_update_stats_counters(adapter);
INIT_DEBUGOUT("ixgb_attach: end");
return (0);
err_hw_init:
ixgb_dma_free(adapter, &adapter->rxdma);
err_rx_desc:
ixgb_dma_free(adapter, &adapter->txdma);
err_tx_desc:
err_pci:
ixgb_free_pci_resources(adapter);
sysctl_ctx_free(&adapter->sysctl_ctx);
return (error);
}
/*********************************************************************
* Device removal routine
*
* The detach entry point is called when the driver is being removed.
* This routine stops the adapter and deallocates all the resources
* that were allocated for driver operation.
*
* return 0 on success, positive on failure
*********************************************************************/
static int
ixgb_detach(device_t dev)
{
struct adapter *adapter = device_get_softc(dev);
struct ifnet *ifp = adapter->ifp;
INIT_DEBUGOUT("ixgb_detach: begin");
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
IXGB_LOCK(adapter);
adapter->in_detach = 1;
ixgb_stop(adapter);
IXGB_UNLOCK(adapter);
#if __FreeBSD_version < 500000
ether_ifdetach(adapter->ifp, ETHER_BPF_SUPPORTED);
#else
ether_ifdetach(adapter->ifp);
#endif
ixgb_free_pci_resources(adapter);
#if __FreeBSD_version >= 500000
if_free(adapter->ifp);
#endif
/* Free Transmit Descriptor ring */
if (adapter->tx_desc_base) {
ixgb_dma_free(adapter, &adapter->txdma);
adapter->tx_desc_base = NULL;
}
/* Free Receive Descriptor ring */
if (adapter->rx_desc_base) {
ixgb_dma_free(adapter, &adapter->rxdma);
adapter->rx_desc_base = NULL;
}
/* Remove from the adapter list */
if (ixgb_adapter_list == adapter)
ixgb_adapter_list = adapter->next;
if (adapter->next != NULL)
adapter->next->prev = adapter->prev;
if (adapter->prev != NULL)
adapter->prev->next = adapter->next;
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
ifp->if_timer = 0;
IXGB_LOCK_DESTROY(adapter);
return (0);
}
/*********************************************************************
*
* Shutdown entry point
*
**********************************************************************/
static int
ixgb_shutdown(device_t dev)
{
struct adapter *adapter = device_get_softc(dev);
IXGB_LOCK(adapter);
ixgb_stop(adapter);
IXGB_UNLOCK(adapter);
return (0);
}
/*********************************************************************
* Transmit entry point
*
* ixgb_start is called by the stack to initiate a transmit.
* The driver will remain in this routine as long as there are
* packets to transmit and transmit resources are available.
* In case resources are not available stack is notified and
* the packet is requeued.
**********************************************************************/
static void
ixgb_start_locked(struct ifnet * ifp)
{
struct mbuf *m_head;
struct adapter *adapter = ifp->if_softc;
IXGB_LOCK_ASSERT(adapter);
if (!adapter->link_active)
return;
while (ifp->if_snd.ifq_head != NULL) {
IF_DEQUEUE(&ifp->if_snd, m_head);
if (m_head == NULL)
break;
if (ixgb_encap(adapter, m_head)) {
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
IF_PREPEND(&ifp->if_snd, m_head);
break;
}
/* Send a copy of the frame to the BPF listener */
#if __FreeBSD_version < 500000
if (ifp->if_bpf)
bpf_mtap(ifp, m_head);
#else
BPF_MTAP(ifp, m_head);
#endif
/* Set timeout in case hardware has problems transmitting */
ifp->if_timer = IXGB_TX_TIMEOUT;
}
return;
}
static void
ixgb_start(struct ifnet *ifp)
{
struct adapter *adapter = ifp->if_softc;
IXGB_LOCK(adapter);
ixgb_start_locked(ifp);
IXGB_UNLOCK(adapter);
return;
}
/*********************************************************************
* Ioctl entry point
*
* ixgb_ioctl is called when the user wants to configure the
* interface.
*
* return 0 on success, positive on failure
**********************************************************************/
static int
ixgb_ioctl(struct ifnet * ifp, IOCTL_CMD_TYPE command, caddr_t data)
{
int mask, error = 0;
struct ifreq *ifr = (struct ifreq *) data;
struct adapter *adapter = ifp->if_softc;
if (adapter->in_detach)
goto out;
switch (command) {
case SIOCSIFADDR:
case SIOCGIFADDR:
IOCTL_DEBUGOUT("ioctl rcv'd: SIOCxIFADDR (Get/Set Interface Addr)");
ether_ioctl(ifp, command, data);
break;
case SIOCSIFMTU:
IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFMTU (Set Interface MTU)");
if (ifr->ifr_mtu > IXGB_MAX_JUMBO_FRAME_SIZE - ETHER_HDR_LEN) {
error = EINVAL;
} else {
IXGB_LOCK(adapter);
ifp->if_mtu = ifr->ifr_mtu;
adapter->hw.max_frame_size =
ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN;
ixgb_init_locked(adapter);
IXGB_UNLOCK(adapter);
}
break;
case SIOCSIFFLAGS:
IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFFLAGS (Set Interface Flags)");
IXGB_LOCK(adapter);
if (ifp->if_flags & IFF_UP) {
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
ixgb_init_locked(adapter);
}
ixgb_disable_promisc(adapter);
ixgb_set_promisc(adapter);
} else {
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
ixgb_stop(adapter);
}
}
IXGB_UNLOCK(adapter);
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
IOCTL_DEBUGOUT("ioctl rcv'd: SIOC(ADD|DEL)MULTI");
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
IXGB_LOCK(adapter);
ixgb_disable_intr(adapter);
ixgb_set_multi(adapter);
ixgb_enable_intr(adapter);
IXGB_UNLOCK(adapter);
}
break;
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
IOCTL_DEBUGOUT("ioctl rcv'd: SIOCxIFMEDIA (Get/Set Interface Media)");
error = ifmedia_ioctl(ifp, ifr, &adapter->media, command);
break;
case SIOCSIFCAP:
IOCTL_DEBUGOUT("ioctl rcv'd: SIOCSIFCAP (Set Capabilities)");
mask = ifr->ifr_reqcap ^ ifp->if_capenable;
#ifdef DEVICE_POLLING
if (mask & IFCAP_POLLING) {
if (ifr->ifr_reqcap & IFCAP_POLLING) {
error = ether_poll_register(ixgb_poll, ifp);
if (error)
return(error);
IXGB_LOCK(adapter);
ixgb_disable_intr(adapter);
ifp->if_capenable |= IFCAP_POLLING;
IXGB_UNLOCK(adapter);
} else {
error = ether_poll_deregister(ifp);
/* Enable interrupt even in error case */
IXGB_LOCK(adapter);
ixgb_enable_intr(adapter);
ifp->if_capenable &= ~IFCAP_POLLING;
IXGB_UNLOCK(adapter);
}
}
#endif /* DEVICE_POLLING */
if (mask & IFCAP_HWCSUM) {
if (IFCAP_HWCSUM & ifp->if_capenable)
ifp->if_capenable &= ~IFCAP_HWCSUM;
else
ifp->if_capenable |= IFCAP_HWCSUM;
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
ixgb_init(adapter);
}
break;
default:
IOCTL_DEBUGOUT1("ioctl received: UNKNOWN (0x%X)\n", (int)command);
error = EINVAL;
}
out:
return (error);
}
/*********************************************************************
* Watchdog entry point
*
* This routine is called whenever hardware quits transmitting.
*
**********************************************************************/
static void
ixgb_watchdog(struct ifnet * ifp)
{
struct adapter *adapter;
adapter = ifp->if_softc;
/*
* If we are in this routine because of pause frames, then don't
* reset the hardware.
*/
if (IXGB_READ_REG(&adapter->hw, STATUS) & IXGB_STATUS_TXOFF) {
ifp->if_timer = IXGB_TX_TIMEOUT;
return;
}
printf("ixgb%d: watchdog timeout -- resetting\n", adapter->unit);
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
ixgb_stop(adapter);
ixgb_init(adapter);
ifp->if_oerrors++;
return;
}
/*********************************************************************
* Init entry point
*
* This routine is used in two ways. It is used by the stack as
* init entry point in network interface structure. It is also used
* by the driver as a hw/sw initialization routine to get to a
* consistent state.
*
* return 0 on success, positive on failure
**********************************************************************/
static void
ixgb_init_locked(struct adapter *adapter)
{
struct ifnet *ifp;
INIT_DEBUGOUT("ixgb_init: begin");
IXGB_LOCK_ASSERT(adapter);
ixgb_stop(adapter);
/* Get the latest mac address, User can use a LAA */
bcopy(IFP2ENADDR(adapter->ifp), adapter->hw.curr_mac_addr,
IXGB_ETH_LENGTH_OF_ADDRESS);
/* Initialize the hardware */
if (ixgb_hardware_init(adapter)) {
printf("ixgb%d: Unable to initialize the hardware\n",
adapter->unit);
return;
}
ixgb_enable_vlans(adapter);
/* Prepare transmit descriptors and buffers */
if (ixgb_setup_transmit_structures(adapter)) {
printf("ixgb%d: Could not setup transmit structures\n",
adapter->unit);
ixgb_stop(adapter);
return;
}
ixgb_initialize_transmit_unit(adapter);
/* Setup Multicast table */
ixgb_set_multi(adapter);
/* Prepare receive descriptors and buffers */
if (ixgb_setup_receive_structures(adapter)) {
printf("ixgb%d: Could not setup receive structures\n",
adapter->unit);
ixgb_stop(adapter);
return;
}
ixgb_initialize_receive_unit(adapter);
/* Don't loose promiscuous settings */
ixgb_set_promisc(adapter);
ifp = adapter->ifp;
ifp->if_drv_flags |= IFF_DRV_RUNNING;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
if (ifp->if_capenable & IFCAP_TXCSUM)
ifp->if_hwassist = IXGB_CHECKSUM_FEATURES;
else
ifp->if_hwassist = 0;
/* Enable jumbo frames */
if (ifp->if_mtu > ETHERMTU) {
uint32_t temp_reg;
IXGB_WRITE_REG(&adapter->hw, MFS,
adapter->hw.max_frame_size << IXGB_MFS_SHIFT);
temp_reg = IXGB_READ_REG(&adapter->hw, CTRL0);
temp_reg |= IXGB_CTRL0_JFE;
IXGB_WRITE_REG(&adapter->hw, CTRL0, temp_reg);
}
callout_reset(&adapter->timer, 2 * hz, ixgb_local_timer, adapter);
ixgb_clear_hw_cntrs(&adapter->hw);
#ifdef DEVICE_POLLING
/*
* Only disable interrupts if we are polling, make sure they are on
* otherwise.
*/
if (ifp->if_capenable & IFCAP_POLLING)
ixgb_disable_intr(adapter);
else
#endif
ixgb_enable_intr(adapter);
return;
}
static void
ixgb_init(void *arg)
{
struct adapter *adapter = arg;
IXGB_LOCK(adapter);
ixgb_init_locked(adapter);
IXGB_UNLOCK(adapter);
return;
}
#ifdef DEVICE_POLLING
static void
ixgb_poll_locked(struct ifnet * ifp, enum poll_cmd cmd, int count)
{
struct adapter *adapter = ifp->if_softc;
u_int32_t reg_icr;
IXGB_LOCK_ASSERT(adapter);
if (cmd == POLL_AND_CHECK_STATUS) {
reg_icr = IXGB_READ_REG(&adapter->hw, ICR);
if (reg_icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC)) {
callout_stop(&adapter->timer);
ixgb_check_for_link(&adapter->hw);
ixgb_print_link_status(adapter);
callout_reset(&adapter->timer, 2 * hz, ixgb_local_timer,
adapter);
}
}
ixgb_process_receive_interrupts(adapter, count);
ixgb_clean_transmit_interrupts(adapter);
if (ifp->if_snd.ifq_head != NULL)
ixgb_start_locked(ifp);
}
static void
ixgb_poll(struct ifnet * ifp, enum poll_cmd cmd, int count)
{
struct adapter *adapter = ifp->if_softc;
IXGB_LOCK(adapter);
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
ixgb_poll_locked(ifp, cmd, count);
IXGB_UNLOCK(adapter);
}
#endif /* DEVICE_POLLING */
/*********************************************************************
*
* Interrupt Service routine
*
**********************************************************************/
static void
ixgb_intr(void *arg)
{
u_int32_t loop_cnt = IXGB_MAX_INTR;
u_int32_t reg_icr;
struct ifnet *ifp;
struct adapter *adapter = arg;
boolean_t rxdmt0 = FALSE;
IXGB_LOCK(adapter);
ifp = adapter->ifp;
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING) {
IXGB_UNLOCK(adapter);
return;
}
#endif
reg_icr = IXGB_READ_REG(&adapter->hw, ICR);
if (reg_icr == 0) {
IXGB_UNLOCK(adapter);
return;
}
if (reg_icr & IXGB_INT_RXDMT0)
rxdmt0 = TRUE;
#ifdef _SV_
if (reg_icr & IXGB_INT_RXDMT0)
adapter->sv_stats.icr_rxdmt0++;
if (reg_icr & IXGB_INT_RXO)
adapter->sv_stats.icr_rxo++;
if (reg_icr & IXGB_INT_RXT0)
adapter->sv_stats.icr_rxt0++;
if (reg_icr & IXGB_INT_TXDW)
adapter->sv_stats.icr_TXDW++;
#endif /* _SV_ */
/* Link status change */
if (reg_icr & (IXGB_INT_RXSEQ | IXGB_INT_LSC)) {
callout_stop(&adapter->timer);
ixgb_check_for_link(&adapter->hw);
ixgb_print_link_status(adapter);
callout_reset(&adapter->timer, 2 * hz, ixgb_local_timer,
adapter);
}
while (loop_cnt > 0) {
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
ixgb_process_receive_interrupts(adapter, -1);
ixgb_clean_transmit_interrupts(adapter);
}
loop_cnt--;
}
if (rxdmt0 && adapter->raidc) {
IXGB_WRITE_REG(&adapter->hw, IMC, IXGB_INT_RXDMT0);
IXGB_WRITE_REG(&adapter->hw, IMS, IXGB_INT_RXDMT0);
}
if (ifp->if_drv_flags & IFF_DRV_RUNNING && ifp->if_snd.ifq_head != NULL)
ixgb_start_locked(ifp);
IXGB_UNLOCK(adapter);
return;
}
/*********************************************************************
*
* Media Ioctl callback
*
* This routine is called whenever the user queries the status of
* the interface using ifconfig.
*
**********************************************************************/
static void
ixgb_media_status(struct ifnet * ifp, struct ifmediareq * ifmr)
{
struct adapter *adapter = ifp->if_softc;
INIT_DEBUGOUT("ixgb_media_status: begin");
ixgb_check_for_link(&adapter->hw);
ixgb_print_link_status(adapter);
ifmr->ifm_status = IFM_AVALID;
ifmr->ifm_active = IFM_ETHER;
if (!adapter->hw.link_up)
return;
ifmr->ifm_status |= IFM_ACTIVE;
ifmr->ifm_active |= IFM_1000_SX | IFM_FDX;
return;
}
/*********************************************************************
*
* Media Ioctl callback
*
* This routine is called when the user changes speed/duplex using
* media/mediopt option with ifconfig.
*
**********************************************************************/
static int
ixgb_media_change(struct ifnet * ifp)
{
struct adapter *adapter = ifp->if_softc;
struct ifmedia *ifm = &adapter->media;
INIT_DEBUGOUT("ixgb_media_change: begin");
if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
return (EINVAL);
return (0);
}
/*********************************************************************
*
* This routine maps the mbufs to tx descriptors.
*
* return 0 on success, positive on failure
**********************************************************************/
static int
ixgb_encap(struct adapter * adapter, struct mbuf * m_head)
{
u_int8_t txd_popts;
int i, j, error, nsegs;
#if __FreeBSD_version < 500000
struct ifvlan *ifv = NULL;
#else
struct m_tag *mtag;
#endif
bus_dma_segment_t segs[IXGB_MAX_SCATTER];
bus_dmamap_t map;
struct ixgb_buffer *tx_buffer = NULL;
struct ixgb_tx_desc *current_tx_desc = NULL;
struct ifnet *ifp = adapter->ifp;
/*
* Force a cleanup if number of TX descriptors available hits the
* threshold
*/
if (adapter->num_tx_desc_avail <= IXGB_TX_CLEANUP_THRESHOLD) {
ixgb_clean_transmit_interrupts(adapter);
}
if (adapter->num_tx_desc_avail <= IXGB_TX_CLEANUP_THRESHOLD) {
adapter->no_tx_desc_avail1++;
return (ENOBUFS);
}
/*
* Map the packet for DMA.
*/
if (bus_dmamap_create(adapter->txtag, BUS_DMA_NOWAIT, &map)) {
adapter->no_tx_map_avail++;
return (ENOMEM);
}
error = bus_dmamap_load_mbuf_sg(adapter->txtag, map, m_head, segs,
&nsegs, BUS_DMA_NOWAIT);
if (error != 0) {
adapter->no_tx_dma_setup++;
printf("ixgb%d: ixgb_encap: bus_dmamap_load_mbuf failed; "
"error %u\n", adapter->unit, error);
bus_dmamap_destroy(adapter->txtag, map);
return (error);
}
KASSERT(nsegs != 0, ("ixgb_encap: empty packet"));
if (nsegs > adapter->num_tx_desc_avail) {
adapter->no_tx_desc_avail2++;
bus_dmamap_destroy(adapter->txtag, map);
return (ENOBUFS);
}
if (ifp->if_hwassist > 0) {
ixgb_transmit_checksum_setup(adapter, m_head,
&txd_popts);
} else
txd_popts = 0;
/* Find out if we are in vlan mode */
#if __FreeBSD_version < 500000
if ((m_head->m_flags & (M_PROTO1 | M_PKTHDR)) == (M_PROTO1 | M_PKTHDR) &&
m_head->m_pkthdr.rcvif != NULL &&
m_head->m_pkthdr.rcvif->if_type == IFT_L2VLAN)
ifv = m_head->m_pkthdr.rcvif->if_softc;
#else
mtag = VLAN_OUTPUT_TAG(ifp, m_head);
#endif
i = adapter->next_avail_tx_desc;
for (j = 0; j < nsegs; j++) {
tx_buffer = &adapter->tx_buffer_area[i];
current_tx_desc = &adapter->tx_desc_base[i];
current_tx_desc->buff_addr = htole64(segs[j].ds_addr);
current_tx_desc->cmd_type_len = (adapter->txd_cmd | segs[j].ds_len);
current_tx_desc->popts = txd_popts;
if (++i == adapter->num_tx_desc)
i = 0;
tx_buffer->m_head = NULL;
}
adapter->num_tx_desc_avail -= nsegs;
adapter->next_avail_tx_desc = i;
#if __FreeBSD_version < 500000
if (ifv != NULL) {
/* Set the vlan id */
current_tx_desc->vlan = ifv->ifv_tag;
#else
if (mtag != NULL) {
/* Set the vlan id */
current_tx_desc->vlan = VLAN_TAG_VALUE(mtag);
#endif
/* Tell hardware to add tag */
current_tx_desc->cmd_type_len |= IXGB_TX_DESC_CMD_VLE;
}
tx_buffer->m_head = m_head;
tx_buffer->map = map;
bus_dmamap_sync(adapter->txtag, map, BUS_DMASYNC_PREWRITE);
/*
* Last Descriptor of Packet needs End Of Packet (EOP)
*/
current_tx_desc->cmd_type_len |= (IXGB_TX_DESC_CMD_EOP);
/*
* Advance the Transmit Descriptor Tail (Tdt), this tells the E1000
* that this frame is available to transmit.
*/
IXGB_WRITE_REG(&adapter->hw, TDT, i);
return (0);
}
static void
ixgb_set_promisc(struct adapter * adapter)
{
u_int32_t reg_rctl;
struct ifnet *ifp = adapter->ifp;
reg_rctl = IXGB_READ_REG(&adapter->hw, RCTL);
if (ifp->if_flags & IFF_PROMISC) {
reg_rctl |= (IXGB_RCTL_UPE | IXGB_RCTL_MPE);
IXGB_WRITE_REG(&adapter->hw, RCTL, reg_rctl);
} else if (ifp->if_flags & IFF_ALLMULTI) {
reg_rctl |= IXGB_RCTL_MPE;
reg_rctl &= ~IXGB_RCTL_UPE;
IXGB_WRITE_REG(&adapter->hw, RCTL, reg_rctl);
}
return;
}
static void
ixgb_disable_promisc(struct adapter * adapter)
{
u_int32_t reg_rctl;
reg_rctl = IXGB_READ_REG(&adapter->hw, RCTL);
reg_rctl &= (~IXGB_RCTL_UPE);
reg_rctl &= (~IXGB_RCTL_MPE);
IXGB_WRITE_REG(&adapter->hw, RCTL, reg_rctl);
return;
}
/*********************************************************************
* Multicast Update
*
* This routine is called whenever multicast address list is updated.
*
**********************************************************************/
static void
ixgb_set_multi(struct adapter * adapter)
{
u_int32_t reg_rctl = 0;
u_int8_t mta[MAX_NUM_MULTICAST_ADDRESSES * IXGB_ETH_LENGTH_OF_ADDRESS];
struct ifmultiaddr *ifma;
int mcnt = 0;
struct ifnet *ifp = adapter->ifp;
IOCTL_DEBUGOUT("ixgb_set_multi: begin");
IF_ADDR_LOCK(ifp);
#if __FreeBSD_version < 500000
LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
#else
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
#endif
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
bcopy(LLADDR((struct sockaddr_dl *) ifma->ifma_addr),
&mta[mcnt * IXGB_ETH_LENGTH_OF_ADDRESS], IXGB_ETH_LENGTH_OF_ADDRESS);
mcnt++;
}
IF_ADDR_UNLOCK(ifp);
if (mcnt > MAX_NUM_MULTICAST_ADDRESSES) {
reg_rctl = IXGB_READ_REG(&adapter->hw, RCTL);
reg_rctl |= IXGB_RCTL_MPE;
IXGB_WRITE_REG(&adapter->hw, RCTL, reg_rctl);
} else
ixgb_mc_addr_list_update(&adapter->hw, mta, mcnt, 0);
return;
}
/*********************************************************************
* Timer routine
*
* This routine checks for link status and updates statistics.
*
**********************************************************************/
static void
ixgb_local_timer(void *arg)
{
struct ifnet *ifp;
struct adapter *adapter = arg;
ifp = adapter->ifp;
IXGB_LOCK(adapter);
ixgb_check_for_link(&adapter->hw);
ixgb_print_link_status(adapter);
ixgb_update_stats_counters(adapter);
if (ixgb_display_debug_stats && ifp->if_drv_flags & IFF_DRV_RUNNING) {
ixgb_print_hw_stats(adapter);
}
callout_reset(&adapter->timer, 2 * hz, ixgb_local_timer, adapter);
IXGB_UNLOCK(adapter);
return;
}
static void
ixgb_print_link_status(struct adapter * adapter)
{
if (adapter->hw.link_up) {
if (!adapter->link_active) {
printf("ixgb%d: Link is up %d Mbps %s \n",
adapter->unit,
10000,
"Full Duplex");
adapter->link_active = 1;
}
} else {
if (adapter->link_active) {
printf("ixgb%d: Link is Down \n", adapter->unit);
adapter->link_active = 0;
}
}
return;
}
/*********************************************************************
*
* This routine disables all traffic on the adapter by issuing a
* global reset on the MAC and deallocates TX/RX buffers.
*
**********************************************************************/
static void
ixgb_stop(void *arg)
{
struct ifnet *ifp;
struct adapter *adapter = arg;
ifp = adapter->ifp;
IXGB_LOCK_ASSERT(adapter);
INIT_DEBUGOUT("ixgb_stop: begin\n");
ixgb_disable_intr(adapter);
adapter->hw.adapter_stopped = FALSE;
ixgb_adapter_stop(&adapter->hw);
callout_stop(&adapter->timer);
ixgb_free_transmit_structures(adapter);
ixgb_free_receive_structures(adapter);
/* Tell the stack that the interface is no longer active */
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
return;
}
/*********************************************************************
*
* Determine hardware revision.
*
**********************************************************************/
static void
ixgb_identify_hardware(struct adapter * adapter)
{
device_t dev = adapter->dev;
/* Make sure our PCI config space has the necessary stuff set */
adapter->hw.pci_cmd_word = pci_read_config(dev, PCIR_COMMAND, 2);
if (!((adapter->hw.pci_cmd_word & PCIM_CMD_BUSMASTEREN) &&
(adapter->hw.pci_cmd_word & PCIM_CMD_MEMEN))) {
printf("ixgb%d: Memory Access and/or Bus Master bits were not set!\n",
adapter->unit);
adapter->hw.pci_cmd_word |=
(PCIM_CMD_BUSMASTEREN | PCIM_CMD_MEMEN);
pci_write_config(dev, PCIR_COMMAND, adapter->hw.pci_cmd_word, 2);
}
/* Save off the information about this board */
adapter->hw.vendor_id = pci_get_vendor(dev);
adapter->hw.device_id = pci_get_device(dev);
adapter->hw.revision_id = pci_read_config(dev, PCIR_REVID, 1);
adapter->hw.subsystem_vendor_id = pci_read_config(dev, PCIR_SUBVEND_0, 2);
adapter->hw.subsystem_id = pci_read_config(dev, PCIR_SUBDEV_0, 2);
/* Set MacType, etc. based on this PCI info */
switch (adapter->hw.device_id) {
case IXGB_DEVICE_ID_82597EX:
case IXGB_DEVICE_ID_82597EX_SR:
adapter->hw.mac_type = ixgb_82597;
break;
default:
INIT_DEBUGOUT1("Unknown device if 0x%x", adapter->hw.device_id);
printf("ixgb%d: unsupported device id 0x%x\n", adapter->unit, adapter->hw.device_id);
}
return;
}
static int
ixgb_allocate_pci_resources(struct adapter * adapter)
{
int rid;
device_t dev = adapter->dev;
rid = IXGB_MMBA;
adapter->res_memory = bus_alloc_resource(dev, SYS_RES_MEMORY,
&rid, 0, ~0, 1,
RF_ACTIVE);
if (!(adapter->res_memory)) {
printf("ixgb%d: Unable to allocate bus resource: memory\n",
adapter->unit);
return (ENXIO);
}
adapter->osdep.mem_bus_space_tag =
rman_get_bustag(adapter->res_memory);
adapter->osdep.mem_bus_space_handle =
rman_get_bushandle(adapter->res_memory);
adapter->hw.hw_addr = (uint8_t *) & adapter->osdep.mem_bus_space_handle;
rid = 0x0;
adapter->res_interrupt = bus_alloc_resource(dev, SYS_RES_IRQ,
&rid, 0, ~0, 1,
RF_SHAREABLE | RF_ACTIVE);
if (!(adapter->res_interrupt)) {
printf("ixgb%d: Unable to allocate bus resource: interrupt\n",
adapter->unit);
return (ENXIO);
}
if (bus_setup_intr(dev, adapter->res_interrupt,
INTR_TYPE_NET | INTR_MPSAFE,
(void (*) (void *))ixgb_intr, adapter,
&adapter->int_handler_tag)) {
printf("ixgb%d: Error registering interrupt handler!\n",
adapter->unit);
return (ENXIO);
}
adapter->hw.back = &adapter->osdep;
return (0);
}
static void
ixgb_free_pci_resources(struct adapter * adapter)
{
device_t dev = adapter->dev;
if (adapter->res_interrupt != NULL) {
bus_teardown_intr(dev, adapter->res_interrupt,
adapter->int_handler_tag);
bus_release_resource(dev, SYS_RES_IRQ, 0,
adapter->res_interrupt);
}
if (adapter->res_memory != NULL) {
bus_release_resource(dev, SYS_RES_MEMORY, IXGB_MMBA,
adapter->res_memory);
}
if (adapter->res_ioport != NULL) {
bus_release_resource(dev, SYS_RES_IOPORT, adapter->io_rid,
adapter->res_ioport);
}
return;
}
/*********************************************************************
*
* Initialize the hardware to a configuration as specified by the
* adapter structure. The controller is reset, the EEPROM is
* verified, the MAC address is set, then the shared initialization
* routines are called.
*
**********************************************************************/
static int
ixgb_hardware_init(struct adapter * adapter)
{
/* Issue a global reset */
adapter->hw.adapter_stopped = FALSE;
ixgb_adapter_stop(&adapter->hw);
/* Make sure we have a good EEPROM before we read from it */
if (!ixgb_validate_eeprom_checksum(&adapter->hw)) {
printf("ixgb%d: The EEPROM Checksum Is Not Valid\n",
adapter->unit);
return (EIO);
}
if (!ixgb_init_hw(&adapter->hw)) {
printf("ixgb%d: Hardware Initialization Failed",
adapter->unit);
return (EIO);
}
return (0);
}
/*********************************************************************
*
* Setup networking device structure and register an interface.
*
**********************************************************************/
static void
ixgb_setup_interface(device_t dev, struct adapter * adapter)
{
struct ifnet *ifp;
INIT_DEBUGOUT("ixgb_setup_interface: begin");
ifp = adapter->ifp = if_alloc(IFT_ETHER);
if (ifp == NULL)
panic("%s: can not if_alloc()\n", device_get_nameunit(dev));
#if __FreeBSD_version >= 502000
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
#else
ifp->if_unit = adapter->unit;
ifp->if_name = "ixgb";
#endif
ifp->if_mtu = ETHERMTU;
ifp->if_baudrate = 1000000000;
ifp->if_init = ixgb_init;
ifp->if_softc = adapter;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = ixgb_ioctl;
ifp->if_start = ixgb_start;
ifp->if_watchdog = ixgb_watchdog;
ifp->if_snd.ifq_maxlen = adapter->num_tx_desc - 1;
#if __FreeBSD_version < 500000
ether_ifattach(ifp, ETHER_BPF_SUPPORTED);
#else
ether_ifattach(ifp, adapter->hw.curr_mac_addr);
#endif
ifp->if_capabilities = IFCAP_HWCSUM;
/*
* Tell the upper layer(s) we support long frames.
*/
ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
#if __FreeBSD_version >= 500000
ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_MTU;
#endif
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
/*
* Specify the media types supported by this adapter and register
* callbacks to update media and link information
*/
ifmedia_init(&adapter->media, IFM_IMASK, ixgb_media_change,
ixgb_media_status);
ifmedia_add(&adapter->media, IFM_ETHER | IFM_1000_SX | IFM_FDX,
0, NULL);
ifmedia_add(&adapter->media, IFM_ETHER | IFM_1000_SX,
0, NULL);
ifmedia_add(&adapter->media, IFM_ETHER | IFM_AUTO, 0, NULL);
ifmedia_set(&adapter->media, IFM_ETHER | IFM_AUTO);
return;
}
/********************************************************************
* Manage DMA'able memory.
*******************************************************************/
static void
ixgb_dmamap_cb(void *arg, bus_dma_segment_t * segs, int nseg, int error)
{
if (error)
return;
*(bus_addr_t *) arg = segs->ds_addr;
return;
}
static int
ixgb_dma_malloc(struct adapter * adapter, bus_size_t size,
struct ixgb_dma_alloc * dma, int mapflags)
{
int r;
r = bus_dma_tag_create(NULL, /* parent */
PAGE_SIZE, 0, /* alignment, bounds */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
size, /* maxsize */
1, /* nsegments */
size, /* maxsegsize */
BUS_DMA_ALLOCNOW, /* flags */
#if __FreeBSD_version >= 502000
NULL, /* lockfunc */
NULL, /* lockfuncarg */
#endif
&dma->dma_tag);
if (r != 0) {
printf("ixgb%d: ixgb_dma_malloc: bus_dma_tag_create failed; "
"error %u\n", adapter->unit, r);
goto fail_0;
}
r = bus_dmamem_alloc(dma->dma_tag, (void **)&dma->dma_vaddr,
BUS_DMA_NOWAIT, &dma->dma_map);
if (r != 0) {
printf("ixgb%d: ixgb_dma_malloc: bus_dmamem_alloc failed; "
"error %u\n", adapter->unit, r);
goto fail_1;
}
r = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr,
size,
ixgb_dmamap_cb,
&dma->dma_paddr,
mapflags | BUS_DMA_NOWAIT);
if (r != 0) {
printf("ixgb%d: ixgb_dma_malloc: bus_dmamap_load failed; "
"error %u\n", adapter->unit, r);
goto fail_2;
}
dma->dma_size = size;
return (0);
fail_2:
bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map);
fail_1:
bus_dma_tag_destroy(dma->dma_tag);
fail_0:
dma->dma_map = NULL;
dma->dma_tag = NULL;
return (r);
}
static void
ixgb_dma_free(struct adapter * adapter, struct ixgb_dma_alloc * dma)
{
bus_dmamap_unload(dma->dma_tag, dma->dma_map);
bus_dmamem_free(dma->dma_tag, dma->dma_vaddr, dma->dma_map);
bus_dma_tag_destroy(dma->dma_tag);
}
/*********************************************************************
*
* Allocate memory for tx_buffer structures. The tx_buffer stores all
* the information needed to transmit a packet on the wire.
*
**********************************************************************/
static int
ixgb_allocate_transmit_structures(struct adapter * adapter)
{
if (!(adapter->tx_buffer_area =
(struct ixgb_buffer *) malloc(sizeof(struct ixgb_buffer) *
adapter->num_tx_desc, M_DEVBUF,
M_NOWAIT | M_ZERO))) {
printf("ixgb%d: Unable to allocate tx_buffer memory\n",
adapter->unit);
return ENOMEM;
}
bzero(adapter->tx_buffer_area,
sizeof(struct ixgb_buffer) * adapter->num_tx_desc);
return 0;
}
/*********************************************************************
*
* Allocate and initialize transmit structures.
*
**********************************************************************/
static int
ixgb_setup_transmit_structures(struct adapter * adapter)
{
/*
* Setup DMA descriptor areas.
*/
if (bus_dma_tag_create(NULL, /* parent */
PAGE_SIZE, 0, /* alignment, bounds */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
MCLBYTES * IXGB_MAX_SCATTER, /* maxsize */
IXGB_MAX_SCATTER, /* nsegments */
MCLBYTES, /* maxsegsize */
BUS_DMA_ALLOCNOW, /* flags */
#if __FreeBSD_version >= 502000
NULL, /* lockfunc */
NULL, /* lockfuncarg */
#endif
&adapter->txtag)) {
printf("ixgb%d: Unable to allocate TX DMA tag\n", adapter->unit);
return (ENOMEM);
}
if (ixgb_allocate_transmit_structures(adapter))
return ENOMEM;
bzero((void *)adapter->tx_desc_base,
(sizeof(struct ixgb_tx_desc)) * adapter->num_tx_desc);
adapter->next_avail_tx_desc = 0;
adapter->oldest_used_tx_desc = 0;
/* Set number of descriptors available */
adapter->num_tx_desc_avail = adapter->num_tx_desc;
/* Set checksum context */
adapter->active_checksum_context = OFFLOAD_NONE;
return 0;
}
/*********************************************************************
*
* Enable transmit unit.
*
**********************************************************************/
static void
ixgb_initialize_transmit_unit(struct adapter * adapter)
{
u_int32_t reg_tctl;
u_int64_t tdba = adapter->txdma.dma_paddr;
/* Setup the Base and Length of the Tx Descriptor Ring */
IXGB_WRITE_REG(&adapter->hw, TDBAL,
(tdba & 0x00000000ffffffffULL));
IXGB_WRITE_REG(&adapter->hw, TDBAH, (tdba >> 32));
IXGB_WRITE_REG(&adapter->hw, TDLEN,
adapter->num_tx_desc *
sizeof(struct ixgb_tx_desc));
/* Setup the HW Tx Head and Tail descriptor pointers */
IXGB_WRITE_REG(&adapter->hw, TDH, 0);
IXGB_WRITE_REG(&adapter->hw, TDT, 0);
HW_DEBUGOUT2("Base = %x, Length = %x\n",
IXGB_READ_REG(&adapter->hw, TDBAL),
IXGB_READ_REG(&adapter->hw, TDLEN));
IXGB_WRITE_REG(&adapter->hw, TIDV, adapter->tx_int_delay);
/* Program the Transmit Control Register */
reg_tctl = IXGB_READ_REG(&adapter->hw, TCTL);
reg_tctl = IXGB_TCTL_TCE | IXGB_TCTL_TXEN | IXGB_TCTL_TPDE;
IXGB_WRITE_REG(&adapter->hw, TCTL, reg_tctl);
/* Setup Transmit Descriptor Settings for this adapter */
adapter->txd_cmd = IXGB_TX_DESC_TYPE | IXGB_TX_DESC_CMD_RS;
if (adapter->tx_int_delay > 0)
adapter->txd_cmd |= IXGB_TX_DESC_CMD_IDE;
return;
}
/*********************************************************************
*
* Free all transmit related data structures.
*
**********************************************************************/
static void
ixgb_free_transmit_structures(struct adapter * adapter)
{
struct ixgb_buffer *tx_buffer;
int i;
INIT_DEBUGOUT("free_transmit_structures: begin");
if (adapter->tx_buffer_area != NULL) {
tx_buffer = adapter->tx_buffer_area;
for (i = 0; i < adapter->num_tx_desc; i++, tx_buffer++) {
if (tx_buffer->m_head != NULL) {
bus_dmamap_unload(adapter->txtag, tx_buffer->map);
bus_dmamap_destroy(adapter->txtag, tx_buffer->map);
m_freem(tx_buffer->m_head);
}
tx_buffer->m_head = NULL;
}
}
if (adapter->tx_buffer_area != NULL) {
free(adapter->tx_buffer_area, M_DEVBUF);
adapter->tx_buffer_area = NULL;
}
if (adapter->txtag != NULL) {
bus_dma_tag_destroy(adapter->txtag);
adapter->txtag = NULL;
}
return;
}
/*********************************************************************
*
* The offload context needs to be set when we transfer the first
* packet of a particular protocol (TCP/UDP). We change the
* context only if the protocol type changes.
*
**********************************************************************/
static void
ixgb_transmit_checksum_setup(struct adapter * adapter,
struct mbuf * mp,
u_int8_t * txd_popts)
{
struct ixgb_context_desc *TXD;
struct ixgb_buffer *tx_buffer;
int curr_txd;
if (mp->m_pkthdr.csum_flags) {
if (mp->m_pkthdr.csum_flags & CSUM_TCP) {
*txd_popts = IXGB_TX_DESC_POPTS_TXSM;
if (adapter->active_checksum_context == OFFLOAD_TCP_IP)
return;
else
adapter->active_checksum_context = OFFLOAD_TCP_IP;
} else if (mp->m_pkthdr.csum_flags & CSUM_UDP) {
*txd_popts = IXGB_TX_DESC_POPTS_TXSM;
if (adapter->active_checksum_context == OFFLOAD_UDP_IP)
return;
else
adapter->active_checksum_context = OFFLOAD_UDP_IP;
} else {
*txd_popts = 0;
return;
}
} else {
*txd_popts = 0;
return;
}
/*
* If we reach this point, the checksum offload context needs to be
* reset.
*/
curr_txd = adapter->next_avail_tx_desc;
tx_buffer = &adapter->tx_buffer_area[curr_txd];
TXD = (struct ixgb_context_desc *) & adapter->tx_desc_base[curr_txd];
TXD->tucss = ENET_HEADER_SIZE + sizeof(struct ip);
TXD->tucse = 0;
TXD->mss = 0;
if (adapter->active_checksum_context == OFFLOAD_TCP_IP) {
TXD->tucso =
ENET_HEADER_SIZE + sizeof(struct ip) +
offsetof(struct tcphdr, th_sum);
} else if (adapter->active_checksum_context == OFFLOAD_UDP_IP) {
TXD->tucso =
ENET_HEADER_SIZE + sizeof(struct ip) +
offsetof(struct udphdr, uh_sum);
}
TXD->cmd_type_len = IXGB_CONTEXT_DESC_CMD_TCP | IXGB_TX_DESC_CMD_RS | IXGB_CONTEXT_DESC_CMD_IDE;
tx_buffer->m_head = NULL;
if (++curr_txd == adapter->num_tx_desc)
curr_txd = 0;
adapter->num_tx_desc_avail--;
adapter->next_avail_tx_desc = curr_txd;
return;
}
/**********************************************************************
*
* Examine each tx_buffer in the used queue. If the hardware is done
* processing the packet then free associated resources. The
* tx_buffer is put back on the free queue.
*
**********************************************************************/
static void
ixgb_clean_transmit_interrupts(struct adapter * adapter)
{
int i, num_avail;
struct ixgb_buffer *tx_buffer;
struct ixgb_tx_desc *tx_desc;
IXGB_LOCK_ASSERT(adapter);
if (adapter->num_tx_desc_avail == adapter->num_tx_desc)
return;
#ifdef _SV_
adapter->clean_tx_interrupts++;
#endif
num_avail = adapter->num_tx_desc_avail;
i = adapter->oldest_used_tx_desc;
tx_buffer = &adapter->tx_buffer_area[i];
tx_desc = &adapter->tx_desc_base[i];
while (tx_desc->status & IXGB_TX_DESC_STATUS_DD) {
tx_desc->status = 0;
num_avail++;
if (tx_buffer->m_head) {
bus_dmamap_sync(adapter->txtag, tx_buffer->map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(adapter->txtag, tx_buffer->map);
bus_dmamap_destroy(adapter->txtag, tx_buffer->map);
m_freem(tx_buffer->m_head);
tx_buffer->m_head = NULL;
}
if (++i == adapter->num_tx_desc)
i = 0;
tx_buffer = &adapter->tx_buffer_area[i];
tx_desc = &adapter->tx_desc_base[i];
}
adapter->oldest_used_tx_desc = i;
/*
* If we have enough room, clear IFF_DRV_OACTIVE to tell the stack that
* it is OK to send packets. If there are no pending descriptors,
* clear the timeout. Otherwise, if some descriptors have been freed,
* restart the timeout.
*/
if (num_avail > IXGB_TX_CLEANUP_THRESHOLD) {
struct ifnet *ifp = adapter->ifp;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
if (num_avail == adapter->num_tx_desc)
ifp->if_timer = 0;
else if (num_avail == adapter->num_tx_desc_avail)
ifp->if_timer = IXGB_TX_TIMEOUT;
}
adapter->num_tx_desc_avail = num_avail;
return;
}
/*********************************************************************
*
* Get a buffer from system mbuf buffer pool.
*
**********************************************************************/
static int
ixgb_get_buf(int i, struct adapter * adapter,
struct mbuf * nmp)
{
register struct mbuf *mp = nmp;
struct ixgb_buffer *rx_buffer;
struct ifnet *ifp;
bus_addr_t paddr;
int error;
ifp = adapter->ifp;
if (mp == NULL) {
mp = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
if (mp == NULL) {
adapter->mbuf_alloc_failed++;
return (ENOBUFS);
}
mp->m_len = mp->m_pkthdr.len = MCLBYTES;
} else {
mp->m_len = mp->m_pkthdr.len = MCLBYTES;
mp->m_data = mp->m_ext.ext_buf;
mp->m_next = NULL;
}
if (ifp->if_mtu <= ETHERMTU) {
m_adj(mp, ETHER_ALIGN);
}
rx_buffer = &adapter->rx_buffer_area[i];
/*
* Using memory from the mbuf cluster pool, invoke the bus_dma
* machinery to arrange the memory mapping.
*/
error = bus_dmamap_load(adapter->rxtag, rx_buffer->map,
mtod(mp, void *), mp->m_len,
ixgb_dmamap_cb, &paddr, 0);
if (error) {
m_free(mp);
return (error);
}
rx_buffer->m_head = mp;
adapter->rx_desc_base[i].buff_addr = htole64(paddr);
bus_dmamap_sync(adapter->rxtag, rx_buffer->map, BUS_DMASYNC_PREREAD);
return (0);
}
/*********************************************************************
*
* Allocate memory for rx_buffer structures. Since we use one
* rx_buffer per received packet, the maximum number of rx_buffer's
* that we'll need is equal to the number of receive descriptors
* that we've allocated.
*
**********************************************************************/
static int
ixgb_allocate_receive_structures(struct adapter * adapter)
{
int i, error;
struct ixgb_buffer *rx_buffer;
if (!(adapter->rx_buffer_area =
(struct ixgb_buffer *) malloc(sizeof(struct ixgb_buffer) *
adapter->num_rx_desc, M_DEVBUF,
M_NOWAIT | M_ZERO))) {
printf("ixgb%d: Unable to allocate rx_buffer memory\n",
adapter->unit);
return (ENOMEM);
}
bzero(adapter->rx_buffer_area,
sizeof(struct ixgb_buffer) * adapter->num_rx_desc);
error = bus_dma_tag_create(NULL, /* parent */
PAGE_SIZE, 0, /* alignment, bounds */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
MCLBYTES, /* maxsize */
1, /* nsegments */
MCLBYTES, /* maxsegsize */
BUS_DMA_ALLOCNOW, /* flags */
#if __FreeBSD_version >= 502000
NULL, /* lockfunc */
NULL, /* lockfuncarg */
#endif
&adapter->rxtag);
if (error != 0) {
printf("ixgb%d: ixgb_allocate_receive_structures: "
"bus_dma_tag_create failed; error %u\n",
adapter->unit, error);
goto fail_0;
}
rx_buffer = adapter->rx_buffer_area;
for (i = 0; i < adapter->num_rx_desc; i++, rx_buffer++) {
error = bus_dmamap_create(adapter->rxtag, BUS_DMA_NOWAIT,
&rx_buffer->map);
if (error != 0) {
printf("ixgb%d: ixgb_allocate_receive_structures: "
"bus_dmamap_create failed; error %u\n",
adapter->unit, error);
goto fail_1;
}
}
for (i = 0; i < adapter->num_rx_desc; i++) {
if (ixgb_get_buf(i, adapter, NULL) == ENOBUFS) {
adapter->rx_buffer_area[i].m_head = NULL;
adapter->rx_desc_base[i].buff_addr = 0;
return (ENOBUFS);
}
}
return (0);
fail_1:
bus_dma_tag_destroy(adapter->rxtag);
fail_0:
adapter->rxtag = NULL;
free(adapter->rx_buffer_area, M_DEVBUF);
adapter->rx_buffer_area = NULL;
return (error);
}
/*********************************************************************
*
* Allocate and initialize receive structures.
*
**********************************************************************/
static int
ixgb_setup_receive_structures(struct adapter * adapter)
{
bzero((void *)adapter->rx_desc_base,
(sizeof(struct ixgb_rx_desc)) * adapter->num_rx_desc);
if (ixgb_allocate_receive_structures(adapter))
return ENOMEM;
/* Setup our descriptor pointers */
adapter->next_rx_desc_to_check = 0;
adapter->next_rx_desc_to_use = 0;
return (0);
}
/*********************************************************************
*
* Enable receive unit.
*
**********************************************************************/
static void
ixgb_initialize_receive_unit(struct adapter * adapter)
{
u_int32_t reg_rctl;
u_int32_t reg_rxcsum;
u_int32_t reg_rxdctl;
struct ifnet *ifp;
u_int64_t rdba = adapter->rxdma.dma_paddr;
ifp = adapter->ifp;
/*
* Make sure receives are disabled while setting up the descriptor
* ring
*/
reg_rctl = IXGB_READ_REG(&adapter->hw, RCTL);
IXGB_WRITE_REG(&adapter->hw, RCTL, reg_rctl & ~IXGB_RCTL_RXEN);
/* Set the Receive Delay Timer Register */
IXGB_WRITE_REG(&adapter->hw, RDTR,
adapter->rx_int_delay);
/* Setup the Base and Length of the Rx Descriptor Ring */
IXGB_WRITE_REG(&adapter->hw, RDBAL,
(rdba & 0x00000000ffffffffULL));
IXGB_WRITE_REG(&adapter->hw, RDBAH, (rdba >> 32));
IXGB_WRITE_REG(&adapter->hw, RDLEN, adapter->num_rx_desc *
sizeof(struct ixgb_rx_desc));
/* Setup the HW Rx Head and Tail Descriptor Pointers */
IXGB_WRITE_REG(&adapter->hw, RDH, 0);
IXGB_WRITE_REG(&adapter->hw, RDT, adapter->num_rx_desc - 1);
reg_rxdctl = RXDCTL_WTHRESH_DEFAULT << IXGB_RXDCTL_WTHRESH_SHIFT
| RXDCTL_HTHRESH_DEFAULT << IXGB_RXDCTL_HTHRESH_SHIFT
| RXDCTL_PTHRESH_DEFAULT << IXGB_RXDCTL_PTHRESH_SHIFT;
IXGB_WRITE_REG(&adapter->hw, RXDCTL, reg_rxdctl);
adapter->raidc = 1;
if (adapter->raidc) {
uint32_t raidc;
uint8_t poll_threshold;
#define IXGB_RAIDC_POLL_DEFAULT 120
poll_threshold = ((adapter->num_rx_desc - 1) >> 3);
poll_threshold >>= 1;
poll_threshold &= 0x3F;
raidc = IXGB_RAIDC_EN | IXGB_RAIDC_RXT_GATE |
(IXGB_RAIDC_POLL_DEFAULT << IXGB_RAIDC_POLL_SHIFT) |
(adapter->rx_int_delay << IXGB_RAIDC_DELAY_SHIFT) |
poll_threshold;
IXGB_WRITE_REG(&adapter->hw, RAIDC, raidc);
}
/* Enable Receive Checksum Offload for TCP and UDP ? */
if (ifp->if_capenable & IFCAP_RXCSUM) {
reg_rxcsum = IXGB_READ_REG(&adapter->hw, RXCSUM);
reg_rxcsum |= IXGB_RXCSUM_TUOFL;
IXGB_WRITE_REG(&adapter->hw, RXCSUM, reg_rxcsum);
}
/* Setup the Receive Control Register */
reg_rctl = IXGB_READ_REG(&adapter->hw, RCTL);
reg_rctl &= ~(3 << IXGB_RCTL_MO_SHIFT);
reg_rctl |= IXGB_RCTL_BAM | IXGB_RCTL_RDMTS_1_2 | IXGB_RCTL_SECRC |
IXGB_RCTL_CFF |
(adapter->hw.mc_filter_type << IXGB_RCTL_MO_SHIFT);
switch (adapter->rx_buffer_len) {
default:
case IXGB_RXBUFFER_2048:
reg_rctl |= IXGB_RCTL_BSIZE_2048;
break;
case IXGB_RXBUFFER_4096:
reg_rctl |= IXGB_RCTL_BSIZE_4096;
break;
case IXGB_RXBUFFER_8192:
reg_rctl |= IXGB_RCTL_BSIZE_8192;
break;
case IXGB_RXBUFFER_16384:
reg_rctl |= IXGB_RCTL_BSIZE_16384;
break;
}
reg_rctl |= IXGB_RCTL_RXEN;
/* Enable Receives */
IXGB_WRITE_REG(&adapter->hw, RCTL, reg_rctl);
return;
}
/*********************************************************************
*
* Free receive related data structures.
*
**********************************************************************/
static void
ixgb_free_receive_structures(struct adapter * adapter)
{
struct ixgb_buffer *rx_buffer;
int i;
INIT_DEBUGOUT("free_receive_structures: begin");
if (adapter->rx_buffer_area != NULL) {
rx_buffer = adapter->rx_buffer_area;
for (i = 0; i < adapter->num_rx_desc; i++, rx_buffer++) {
if (rx_buffer->map != NULL) {
bus_dmamap_unload(adapter->rxtag, rx_buffer->map);
bus_dmamap_destroy(adapter->rxtag, rx_buffer->map);
}
if (rx_buffer->m_head != NULL)
m_freem(rx_buffer->m_head);
rx_buffer->m_head = NULL;
}
}
if (adapter->rx_buffer_area != NULL) {
free(adapter->rx_buffer_area, M_DEVBUF);
adapter->rx_buffer_area = NULL;
}
if (adapter->rxtag != NULL) {
bus_dma_tag_destroy(adapter->rxtag);
adapter->rxtag = NULL;
}
return;
}
/*********************************************************************
*
* This routine executes in interrupt context. It replenishes
* the mbufs in the descriptor and sends data which has been
* dma'ed into host memory to upper layer.
*
* We loop at most count times if count is > 0, or until done if
* count < 0.
*
*********************************************************************/
static void
ixgb_process_receive_interrupts(struct adapter * adapter, int count)
{
struct ifnet *ifp;
struct mbuf *mp;
#if __FreeBSD_version < 500000
struct ether_header *eh;
#endif
int eop = 0;
int len;
u_int8_t accept_frame = 0;
int i;
int next_to_use = 0;
int eop_desc;
/* Pointer to the receive descriptor being examined. */
struct ixgb_rx_desc *current_desc;
IXGB_LOCK_ASSERT(adapter);
ifp = adapter->ifp;
i = adapter->next_rx_desc_to_check;
next_to_use = adapter->next_rx_desc_to_use;
eop_desc = adapter->next_rx_desc_to_check;
current_desc = &adapter->rx_desc_base[i];
if (!((current_desc->status) & IXGB_RX_DESC_STATUS_DD)) {
#ifdef _SV_
adapter->no_pkts_avail++;
#endif
return;
}
while ((current_desc->status & IXGB_RX_DESC_STATUS_DD) && (count != 0)) {
mp = adapter->rx_buffer_area[i].m_head;
bus_dmamap_sync(adapter->rxtag, adapter->rx_buffer_area[i].map,
BUS_DMASYNC_POSTREAD);
accept_frame = 1;
if (current_desc->status & IXGB_RX_DESC_STATUS_EOP) {
count--;
eop = 1;
} else {
eop = 0;
}
len = current_desc->length;
if (current_desc->errors & (IXGB_RX_DESC_ERRORS_CE |
IXGB_RX_DESC_ERRORS_SE | IXGB_RX_DESC_ERRORS_P |
IXGB_RX_DESC_ERRORS_RXE)) {
accept_frame = 0;
}
if (accept_frame) {
/* Assign correct length to the current fragment */
mp->m_len = len;
if (adapter->fmp == NULL) {
mp->m_pkthdr.len = len;
adapter->fmp = mp; /* Store the first mbuf */
adapter->lmp = mp;
} else {
/* Chain mbuf's together */
mp->m_flags &= ~M_PKTHDR;
adapter->lmp->m_next = mp;
adapter->lmp = adapter->lmp->m_next;
adapter->fmp->m_pkthdr.len += len;
}
if (eop) {
eop_desc = i;
adapter->fmp->m_pkthdr.rcvif = ifp;
#if __FreeBSD_version < 500000
eh = mtod(adapter->fmp, struct ether_header *);
/* Remove ethernet header from mbuf */
m_adj(adapter->fmp, sizeof(struct ether_header));
ixgb_receive_checksum(adapter, current_desc,
adapter->fmp);
if (current_desc->status & IXGB_RX_DESC_STATUS_VP)
VLAN_INPUT_TAG(eh, adapter->fmp,
current_desc->special);
else
ether_input(ifp, eh, adapter->fmp);
#else
ixgb_receive_checksum(adapter, current_desc,
adapter->fmp);
if (current_desc->status & IXGB_RX_DESC_STATUS_VP)
VLAN_INPUT_TAG(ifp, adapter->fmp,
current_desc->special,
adapter->fmp = NULL);
if (adapter->fmp != NULL) {
IXGB_UNLOCK(adapter);
(*ifp->if_input) (ifp, adapter->fmp);
IXGB_LOCK(adapter);
}
#endif
adapter->fmp = NULL;
adapter->lmp = NULL;
}
adapter->rx_buffer_area[i].m_head = NULL;
} else {
adapter->dropped_pkts++;
if (adapter->fmp != NULL)
m_freem(adapter->fmp);
adapter->fmp = NULL;
adapter->lmp = NULL;
}
/* Zero out the receive descriptors status */
current_desc->status = 0;
/* Advance our pointers to the next descriptor */
if (++i == adapter->num_rx_desc) {
i = 0;
current_desc = adapter->rx_desc_base;
} else
current_desc++;
}
adapter->next_rx_desc_to_check = i;
if (--i < 0)
i = (adapter->num_rx_desc - 1);
/*
* 82597EX: Workaround for redundent write back in receive descriptor ring (causes
* memory corruption). Avoid using and re-submitting the most recently received RX
* descriptor back to hardware.
*
* if(Last written back descriptor == EOP bit set descriptor)
* then avoid re-submitting the most recently received RX descriptor
* back to hardware.
* if(Last written back descriptor != EOP bit set descriptor)
* then avoid re-submitting the most recently received RX descriptors
* till last EOP bit set descriptor.
*/
if (eop_desc != i) {
if (++eop_desc == adapter->num_rx_desc)
eop_desc = 0;
i = eop_desc;
}
/* Replenish the descriptors with new mbufs till last EOP bit set descriptor */
while (next_to_use != i) {
current_desc = &adapter->rx_desc_base[next_to_use];
if ((current_desc->errors & (IXGB_RX_DESC_ERRORS_CE |
IXGB_RX_DESC_ERRORS_SE | IXGB_RX_DESC_ERRORS_P |
IXGB_RX_DESC_ERRORS_RXE))) {
mp = adapter->rx_buffer_area[next_to_use].m_head;
ixgb_get_buf(next_to_use, adapter, mp);
} else {
if (ixgb_get_buf(next_to_use, adapter, NULL) == ENOBUFS)
break;
}
/* Advance our pointers to the next descriptor */
if (++next_to_use == adapter->num_rx_desc) {
next_to_use = 0;
current_desc = adapter->rx_desc_base;
} else
current_desc++;
}
adapter->next_rx_desc_to_use = next_to_use;
if (--next_to_use < 0)
next_to_use = (adapter->num_rx_desc - 1);
/* Advance the IXGB's Receive Queue #0 "Tail Pointer" */
IXGB_WRITE_REG(&adapter->hw, RDT, next_to_use);
return;
}
/*********************************************************************
*
* Verify that the hardware indicated that the checksum is valid.
* Inform the stack about the status of checksum so that stack
* doesn't spend time verifying the checksum.
*
*********************************************************************/
static void
ixgb_receive_checksum(struct adapter * adapter,
struct ixgb_rx_desc * rx_desc,
struct mbuf * mp)
{
if (rx_desc->status & IXGB_RX_DESC_STATUS_IXSM) {
mp->m_pkthdr.csum_flags = 0;
return;
}
if (rx_desc->status & IXGB_RX_DESC_STATUS_IPCS) {
/* Did it pass? */
if (!(rx_desc->errors & IXGB_RX_DESC_ERRORS_IPE)) {
/* IP Checksum Good */
mp->m_pkthdr.csum_flags = CSUM_IP_CHECKED;
mp->m_pkthdr.csum_flags |= CSUM_IP_VALID;
} else {
mp->m_pkthdr.csum_flags = 0;
}
}
if (rx_desc->status & IXGB_RX_DESC_STATUS_TCPCS) {
/* Did it pass? */
if (!(rx_desc->errors & IXGB_RX_DESC_ERRORS_TCPE)) {
mp->m_pkthdr.csum_flags |=
(CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
mp->m_pkthdr.csum_data = htons(0xffff);
}
}
return;
}
static void
ixgb_enable_vlans(struct adapter * adapter)
{
uint32_t ctrl;
ctrl = IXGB_READ_REG(&adapter->hw, CTRL0);
ctrl |= IXGB_CTRL0_VME;
IXGB_WRITE_REG(&adapter->hw, CTRL0, ctrl);
return;
}
static void
ixgb_enable_intr(struct adapter * adapter)
{
IXGB_WRITE_REG(&adapter->hw, IMS, (IXGB_INT_RXT0 | IXGB_INT_TXDW |
IXGB_INT_RXDMT0 | IXGB_INT_LSC | IXGB_INT_RXO));
return;
}
static void
ixgb_disable_intr(struct adapter * adapter)
{
IXGB_WRITE_REG(&adapter->hw, IMC, ~0);
return;
}
void
ixgb_write_pci_cfg(struct ixgb_hw * hw,
uint32_t reg,
uint16_t * value)
{
pci_write_config(((struct ixgb_osdep *) hw->back)->dev, reg,
*value, 2);
}
/**********************************************************************
*
* Update the board statistics counters.
*
**********************************************************************/
static void
ixgb_update_stats_counters(struct adapter * adapter)
{
struct ifnet *ifp;
adapter->stats.crcerrs += IXGB_READ_REG(&adapter->hw, CRCERRS);
adapter->stats.gprcl += IXGB_READ_REG(&adapter->hw, GPRCL);
adapter->stats.gprch += IXGB_READ_REG(&adapter->hw, GPRCH);
adapter->stats.gorcl += IXGB_READ_REG(&adapter->hw, GORCL);
adapter->stats.gorch += IXGB_READ_REG(&adapter->hw, GORCH);
adapter->stats.bprcl += IXGB_READ_REG(&adapter->hw, BPRCL);
adapter->stats.bprch += IXGB_READ_REG(&adapter->hw, BPRCH);
adapter->stats.mprcl += IXGB_READ_REG(&adapter->hw, MPRCL);
adapter->stats.mprch += IXGB_READ_REG(&adapter->hw, MPRCH);
adapter->stats.roc += IXGB_READ_REG(&adapter->hw, ROC);
adapter->stats.mpc += IXGB_READ_REG(&adapter->hw, MPC);
adapter->stats.dc += IXGB_READ_REG(&adapter->hw, DC);
adapter->stats.rlec += IXGB_READ_REG(&adapter->hw, RLEC);
adapter->stats.xonrxc += IXGB_READ_REG(&adapter->hw, XONRXC);
adapter->stats.xontxc += IXGB_READ_REG(&adapter->hw, XONTXC);
adapter->stats.xoffrxc += IXGB_READ_REG(&adapter->hw, XOFFRXC);
adapter->stats.xofftxc += IXGB_READ_REG(&adapter->hw, XOFFTXC);
adapter->stats.gptcl += IXGB_READ_REG(&adapter->hw, GPTCL);
adapter->stats.gptch += IXGB_READ_REG(&adapter->hw, GPTCH);
adapter->stats.gotcl += IXGB_READ_REG(&adapter->hw, GOTCL);
adapter->stats.gotch += IXGB_READ_REG(&adapter->hw, GOTCH);
adapter->stats.ruc += IXGB_READ_REG(&adapter->hw, RUC);
adapter->stats.rfc += IXGB_READ_REG(&adapter->hw, RFC);
adapter->stats.rjc += IXGB_READ_REG(&adapter->hw, RJC);
adapter->stats.torl += IXGB_READ_REG(&adapter->hw, TORL);
adapter->stats.torh += IXGB_READ_REG(&adapter->hw, TORH);
adapter->stats.totl += IXGB_READ_REG(&adapter->hw, TOTL);
adapter->stats.toth += IXGB_READ_REG(&adapter->hw, TOTH);
adapter->stats.tprl += IXGB_READ_REG(&adapter->hw, TPRL);
adapter->stats.tprh += IXGB_READ_REG(&adapter->hw, TPRH);
adapter->stats.tptl += IXGB_READ_REG(&adapter->hw, TPTL);
adapter->stats.tpth += IXGB_READ_REG(&adapter->hw, TPTH);
adapter->stats.plt64c += IXGB_READ_REG(&adapter->hw, PLT64C);
adapter->stats.mptcl += IXGB_READ_REG(&adapter->hw, MPTCL);
adapter->stats.mptch += IXGB_READ_REG(&adapter->hw, MPTCH);
adapter->stats.bptcl += IXGB_READ_REG(&adapter->hw, BPTCL);
adapter->stats.bptch += IXGB_READ_REG(&adapter->hw, BPTCH);
adapter->stats.uprcl += IXGB_READ_REG(&adapter->hw, UPRCL);
adapter->stats.uprch += IXGB_READ_REG(&adapter->hw, UPRCH);
adapter->stats.vprcl += IXGB_READ_REG(&adapter->hw, VPRCL);
adapter->stats.vprch += IXGB_READ_REG(&adapter->hw, VPRCH);
adapter->stats.jprcl += IXGB_READ_REG(&adapter->hw, JPRCL);
adapter->stats.jprch += IXGB_READ_REG(&adapter->hw, JPRCH);
adapter->stats.rnbc += IXGB_READ_REG(&adapter->hw, RNBC);
adapter->stats.icbc += IXGB_READ_REG(&adapter->hw, ICBC);
adapter->stats.ecbc += IXGB_READ_REG(&adapter->hw, ECBC);
adapter->stats.uptcl += IXGB_READ_REG(&adapter->hw, UPTCL);
adapter->stats.uptch += IXGB_READ_REG(&adapter->hw, UPTCH);
adapter->stats.vptcl += IXGB_READ_REG(&adapter->hw, VPTCL);
adapter->stats.vptch += IXGB_READ_REG(&adapter->hw, VPTCH);
adapter->stats.jptcl += IXGB_READ_REG(&adapter->hw, JPTCL);
adapter->stats.jptch += IXGB_READ_REG(&adapter->hw, JPTCH);
adapter->stats.tsctc += IXGB_READ_REG(&adapter->hw, TSCTC);
adapter->stats.tsctfc += IXGB_READ_REG(&adapter->hw, TSCTFC);
adapter->stats.ibic += IXGB_READ_REG(&adapter->hw, IBIC);
adapter->stats.lfc += IXGB_READ_REG(&adapter->hw, LFC);
adapter->stats.pfrc += IXGB_READ_REG(&adapter->hw, PFRC);
adapter->stats.pftc += IXGB_READ_REG(&adapter->hw, PFTC);
adapter->stats.mcfrc += IXGB_READ_REG(&adapter->hw, MCFRC);
ifp = adapter->ifp;
/* Fill out the OS statistics structure */
ifp->if_ipackets = adapter->stats.gprcl;
ifp->if_opackets = adapter->stats.gptcl;
ifp->if_ibytes = adapter->stats.gorcl;
ifp->if_obytes = adapter->stats.gotcl;
ifp->if_imcasts = adapter->stats.mprcl;
ifp->if_collisions = 0;
/* Rx Errors */
ifp->if_ierrors =
adapter->dropped_pkts +
adapter->stats.crcerrs +
adapter->stats.rnbc +
adapter->stats.mpc +
adapter->stats.rlec;
}
/**********************************************************************
*
* This routine is called only when ixgb_display_debug_stats is enabled.
* This routine provides a way to take a look at important statistics
* maintained by the driver and hardware.
*
**********************************************************************/
static void
ixgb_print_hw_stats(struct adapter * adapter)
{
char buf_speed[100], buf_type[100];
ixgb_bus_speed bus_speed;
ixgb_bus_type bus_type;
int unit = adapter->unit;
#ifdef _SV_
printf("ixgb%d: Packets not Avail = %ld\n", unit,
adapter->no_pkts_avail);
printf("ixgb%d: CleanTxInterrupts = %ld\n", unit,
adapter->clean_tx_interrupts);
printf("ixgb%d: ICR RXDMT0 = %lld\n", unit,
(long long)adapter->sv_stats.icr_rxdmt0);
printf("ixgb%d: ICR RXO = %lld\n", unit,
(long long)adapter->sv_stats.icr_rxo);
printf("ixgb%d: ICR RXT0 = %lld\n", unit,
(long long)adapter->sv_stats.icr_rxt0);
printf("ixgb%d: ICR TXDW = %lld\n", unit,
(long long)adapter->sv_stats.icr_TXDW);
#endif /* _SV_ */
bus_speed = adapter->hw.bus.speed;
bus_type = adapter->hw.bus.type;
sprintf(buf_speed,
bus_speed == ixgb_bus_speed_33 ? "33MHz" :
bus_speed == ixgb_bus_speed_66 ? "66MHz" :
bus_speed == ixgb_bus_speed_100 ? "100MHz" :
bus_speed == ixgb_bus_speed_133 ? "133MHz" :
"UNKNOWN");
printf("ixgb%d: PCI_Bus_Speed = %s\n", unit,
buf_speed);
sprintf(buf_type,
bus_type == ixgb_bus_type_pci ? "PCI" :
bus_type == ixgb_bus_type_pcix ? "PCI-X" :
"UNKNOWN");
printf("ixgb%d: PCI_Bus_Type = %s\n", unit,
buf_type);
printf("ixgb%d: Tx Descriptors not Avail1 = %ld\n", unit,
adapter->no_tx_desc_avail1);
printf("ixgb%d: Tx Descriptors not Avail2 = %ld\n", unit,
adapter->no_tx_desc_avail2);
printf("ixgb%d: Std Mbuf Failed = %ld\n", unit,
adapter->mbuf_alloc_failed);
printf("ixgb%d: Std Cluster Failed = %ld\n", unit,
adapter->mbuf_cluster_failed);
printf("ixgb%d: Defer count = %lld\n", unit,
(long long)adapter->stats.dc);
printf("ixgb%d: Missed Packets = %lld\n", unit,
(long long)adapter->stats.mpc);
printf("ixgb%d: Receive No Buffers = %lld\n", unit,
(long long)adapter->stats.rnbc);
printf("ixgb%d: Receive length errors = %lld\n", unit,
(long long)adapter->stats.rlec);
printf("ixgb%d: Crc errors = %lld\n", unit,
(long long)adapter->stats.crcerrs);
printf("ixgb%d: Driver dropped packets = %ld\n", unit,
adapter->dropped_pkts);
printf("ixgb%d: XON Rcvd = %lld\n", unit,
(long long)adapter->stats.xonrxc);
printf("ixgb%d: XON Xmtd = %lld\n", unit,
(long long)adapter->stats.xontxc);
printf("ixgb%d: XOFF Rcvd = %lld\n", unit,
(long long)adapter->stats.xoffrxc);
printf("ixgb%d: XOFF Xmtd = %lld\n", unit,
(long long)adapter->stats.xofftxc);
printf("ixgb%d: Good Packets Rcvd = %lld\n", unit,
(long long)adapter->stats.gprcl);
printf("ixgb%d: Good Packets Xmtd = %lld\n", unit,
(long long)adapter->stats.gptcl);
printf("ixgb%d: Jumbo frames recvd = %lld\n", unit,
(long long)adapter->stats.jprcl);
printf("ixgb%d: Jumbo frames Xmtd = %lld\n", unit,
(long long)adapter->stats.jptcl);
return;
}
static int
ixgb_sysctl_stats(SYSCTL_HANDLER_ARGS)
{
int error;
int result;
struct adapter *adapter;
result = -1;
error = sysctl_handle_int(oidp, &result, 0, req);
if (error || !req->newptr)
return (error);
if (result == 1) {
adapter = (struct adapter *) arg1;
ixgb_print_hw_stats(adapter);
}
return error;
}
Reference in New Issue View Git Blame Copy Permalink