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freebsd-dev/sys/dev/ae/if_ae.c
Marius Strobl 3fcb7a5365 - Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP 
(reporting IFM_LOOP based on BMCR_LOOP is left in place though as
  it might provide useful for debugging). For most mii(4) drivers it
  was unclear whether the PHYs driven by them actually support
  loopback or not. Moreover, typically loopback mode also needs to
  be activated on the MAC, which none of the Ethernet drivers using
  mii(4) implements. Given that loopback media has no real use (and
  obviously hardly had a chance to actually work) besides for driver
  development (which just loopback mode should be sufficient for
  though, i.e one doesn't necessary need support for loopback media)
  support for it is just dropped as both NetBSD and OpenBSD already
  did quite some time ago.
- Let mii_phy_add_media() also announce the support of IFM_NONE.
- Restructure the PHY entry points to use a structure of entry points
  instead of discrete function pointers, and extend this to include
  a "reset" entry point. Make sure any PHY-specific reset routine is
  always used, and provide one for lxtphy(4) which disables MII
  interrupts (as is done for a few other PHYs we have drivers for).
  This includes changing NIC drivers which previously just called the
  generic mii_phy_reset() to now actually call the PHY-specific reset
  routine, which might be crucial in some cases. While at it, the
  redundant checks in these NIC drivers for mii->mii_instance not being
  zero before calling the reset routines were removed because as soon
  as one PHY driver attaches mii->mii_instance is incremented and we
  hardly can end up in their media change callbacks etc if no PHY driver
  has attached as mii_attach() would have failed in that case and not
  attach a miibus(4) instance.
  Consequently, NIC drivers now no longer should call mii_phy_reset()
  directly, so it was removed from EXPORT_SYMS.
- Add a mii_phy_dev_attach() as a companion helper to mii_phy_dev_probe().
  The purpose of that function is to perform the common steps to attach
  a PHY driver instance and to hook it up to the miibus(4) instance and to
  optionally also handle the probing, addition and initialization of the
  supported media. So all a PHY driver without any special requirements
  has to do in its bus attach method is to call mii_phy_dev_attach()
  along with PHY-specific MIIF_* flags, a pointer to its PHY functions
  and the add_media set to one. All PHY drivers were updated to take
  advantage of mii_phy_dev_attach() as appropriate. Along with these
  changes the capability mask was added to the mii_softc structure so
  PHY drivers taking advantage of mii_phy_dev_attach() but still
  handling media on their own do not need to fiddle with the MII attach
  arguments anyway.
- Keep track of the PHY offset in the mii_softc structure. This is done
  for compatibility with NetBSD/OpenBSD.
- Keep track of the PHY's OUI, model and revision in the mii_softc
  structure. Several PHY drivers require this information also after
  attaching and previously had to wrap their own softc around mii_softc.
  NetBSD/OpenBSD also keep track of the model and revision on their
  mii_softc structure. All PHY drivers were updated to take advantage
  as appropriate.
- Convert the mebers of the MII data structure to unsigned where
  appropriate. This is partly inspired by NetBSD/OpenBSD.
- According to IEEE 802.3-2002 the bits actually have to be reversed
  when mapping an OUI to the MII ID registers. All PHY drivers and
  miidevs where changed as necessary. Actually this now again allows to
  largely share miidevs with NetBSD, which fixed this problem already
  9 years ago. Consequently miidevs was synced as far as possible.
- Add MIIF_NOMANPAUSE and mii_phy_flowstatus() calls to drivers that
  weren't explicitly converted to support flow control before. It's
  unclear whether flow control actually works with these but typically
  it should and their net behavior should be more correct with these
  changes in place than without if the MAC driver sets MIIF_DOPAUSE.

Obtained from:	NetBSD (partially)
Reviewed by:	yongari (earlier version), silence on arch@ and net@
2011-05-03 19:51:29 +00:00

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/*-
* Copyright (c) 2008 Stanislav Sedov <stas@FreeBSD.org>.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* Driver for Attansic Technology Corp. L2 FastEthernet adapter.
*
* This driver is heavily based on age(4) Attansic L1 driver by Pyun YongHyeon.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/rman.h>
#include <sys/module.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/taskqueue.h>
#include <net/bpf.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <net/if_vlan_var.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <machine/bus.h>
#include "miibus_if.h"
#include "if_aereg.h"
#include "if_aevar.h"
/*
* Devices supported by this driver.
*/
static struct ae_dev {
uint16_t vendorid;
uint16_t deviceid;
const char *name;
} ae_devs[] = {
{ VENDORID_ATTANSIC, DEVICEID_ATTANSIC_L2,
"Attansic Technology Corp, L2 FastEthernet" },
};
#define AE_DEVS_COUNT (sizeof(ae_devs) / sizeof(*ae_devs))
static struct resource_spec ae_res_spec_mem[] = {
{ SYS_RES_MEMORY, PCIR_BAR(0), RF_ACTIVE },
{ -1, 0, 0 }
};
static struct resource_spec ae_res_spec_irq[] = {
{ SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE },
{ -1, 0, 0 }
};
static struct resource_spec ae_res_spec_msi[] = {
{ SYS_RES_IRQ, 1, RF_ACTIVE },
{ -1, 0, 0 }
};
static int ae_probe(device_t dev);
static int ae_attach(device_t dev);
static void ae_pcie_init(ae_softc_t *sc);
static void ae_phy_reset(ae_softc_t *sc);
static void ae_phy_init(ae_softc_t *sc);
static int ae_reset(ae_softc_t *sc);
static void ae_init(void *arg);
static int ae_init_locked(ae_softc_t *sc);
static int ae_detach(device_t dev);
static int ae_miibus_readreg(device_t dev, int phy, int reg);
static int ae_miibus_writereg(device_t dev, int phy, int reg, int val);
static void ae_miibus_statchg(device_t dev);
static void ae_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr);
static int ae_mediachange(struct ifnet *ifp);
static void ae_retrieve_address(ae_softc_t *sc);
static void ae_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nsegs,
int error);
static int ae_alloc_rings(ae_softc_t *sc);
static void ae_dma_free(ae_softc_t *sc);
static int ae_shutdown(device_t dev);
static int ae_suspend(device_t dev);
static void ae_powersave_disable(ae_softc_t *sc);
static void ae_powersave_enable(ae_softc_t *sc);
static int ae_resume(device_t dev);
static unsigned int ae_tx_avail_size(ae_softc_t *sc);
static int ae_encap(ae_softc_t *sc, struct mbuf **m_head);
static void ae_start(struct ifnet *ifp);
static void ae_start_locked(struct ifnet *ifp);
static void ae_link_task(void *arg, int pending);
static void ae_stop_rxmac(ae_softc_t *sc);
static void ae_stop_txmac(ae_softc_t *sc);
static void ae_mac_config(ae_softc_t *sc);
static int ae_intr(void *arg);
static void ae_int_task(void *arg, int pending);
static void ae_tx_intr(ae_softc_t *sc);
static int ae_rxeof(ae_softc_t *sc, ae_rxd_t *rxd);
static void ae_rx_intr(ae_softc_t *sc);
static void ae_watchdog(ae_softc_t *sc);
static void ae_tick(void *arg);
static void ae_rxfilter(ae_softc_t *sc);
static void ae_rxvlan(ae_softc_t *sc);
static int ae_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
static void ae_stop(ae_softc_t *sc);
static int ae_check_eeprom_present(ae_softc_t *sc, int *vpdc);
static int ae_vpd_read_word(ae_softc_t *sc, int reg, uint32_t *word);
static int ae_get_vpd_eaddr(ae_softc_t *sc, uint32_t *eaddr);
static int ae_get_reg_eaddr(ae_softc_t *sc, uint32_t *eaddr);
static void ae_update_stats_rx(uint16_t flags, ae_stats_t *stats);
static void ae_update_stats_tx(uint16_t flags, ae_stats_t *stats);
static void ae_init_tunables(ae_softc_t *sc);
static device_method_t ae_methods[] = {
/* Device interface. */
DEVMETHOD(device_probe, ae_probe),
DEVMETHOD(device_attach, ae_attach),
DEVMETHOD(device_detach, ae_detach),
DEVMETHOD(device_shutdown, ae_shutdown),
DEVMETHOD(device_suspend, ae_suspend),
DEVMETHOD(device_resume, ae_resume),
/* MII interface. */
DEVMETHOD(miibus_readreg, ae_miibus_readreg),
DEVMETHOD(miibus_writereg, ae_miibus_writereg),
DEVMETHOD(miibus_statchg, ae_miibus_statchg),
{ NULL, NULL }
};
static driver_t ae_driver = {
"ae",
ae_methods,
sizeof(ae_softc_t)
};
static devclass_t ae_devclass;
DRIVER_MODULE(ae, pci, ae_driver, ae_devclass, 0, 0);
DRIVER_MODULE(miibus, ae, miibus_driver, miibus_devclass, 0, 0);
MODULE_DEPEND(ae, pci, 1, 1, 1);
MODULE_DEPEND(ae, ether, 1, 1, 1);
MODULE_DEPEND(ae, miibus, 1, 1, 1);
/*
* Tunables.
*/
static int msi_disable = 0;
TUNABLE_INT("hw.ae.msi_disable", &msi_disable);
#define AE_READ_4(sc, reg) \
bus_read_4((sc)->mem[0], (reg))
#define AE_READ_2(sc, reg) \
bus_read_2((sc)->mem[0], (reg))
#define AE_READ_1(sc, reg) \
bus_read_1((sc)->mem[0], (reg))
#define AE_WRITE_4(sc, reg, val) \
bus_write_4((sc)->mem[0], (reg), (val))
#define AE_WRITE_2(sc, reg, val) \
bus_write_2((sc)->mem[0], (reg), (val))
#define AE_WRITE_1(sc, reg, val) \
bus_write_1((sc)->mem[0], (reg), (val))
#define AE_PHY_READ(sc, reg) \
ae_miibus_readreg(sc->dev, 0, reg)
#define AE_PHY_WRITE(sc, reg, val) \
ae_miibus_writereg(sc->dev, 0, reg, val)
#define AE_CHECK_EADDR_VALID(eaddr) \
((eaddr[0] == 0 && eaddr[1] == 0) || \
(eaddr[0] == 0xffffffff && eaddr[1] == 0xffff))
#define AE_RXD_VLAN(vtag) \
(((vtag) >> 4) | (((vtag) & 0x07) << 13) | (((vtag) & 0x08) << 9))
#define AE_TXD_VLAN(vtag) \
(((vtag) << 4) | (((vtag) >> 13) & 0x07) | (((vtag) >> 9) & 0x08))
static int
ae_probe(device_t dev)
{
uint16_t deviceid, vendorid;
int i;
vendorid = pci_get_vendor(dev);
deviceid = pci_get_device(dev);
/*
* Search through the list of supported devs for matching one.
*/
for (i = 0; i < AE_DEVS_COUNT; i++) {
if (vendorid == ae_devs[i].vendorid &&
deviceid == ae_devs[i].deviceid) {
device_set_desc(dev, ae_devs[i].name);
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
static int
ae_attach(device_t dev)
{
ae_softc_t *sc;
struct ifnet *ifp;
uint8_t chiprev;
uint32_t pcirev;
int nmsi, pmc;
int error;
sc = device_get_softc(dev); /* Automatically allocated and zeroed
on attach. */
KASSERT(sc != NULL, ("[ae, %d]: sc is NULL", __LINE__));
sc->dev = dev;
/*
* Initialize mutexes and tasks.
*/
mtx_init(&sc->mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, MTX_DEF);
callout_init_mtx(&sc->tick_ch, &sc->mtx, 0);
TASK_INIT(&sc->int_task, 0, ae_int_task, sc);
TASK_INIT(&sc->link_task, 0, ae_link_task, sc);
pci_enable_busmaster(dev); /* Enable bus mastering. */
sc->spec_mem = ae_res_spec_mem;
/*
* Allocate memory-mapped registers.
*/
error = bus_alloc_resources(dev, sc->spec_mem, sc->mem);
if (error != 0) {
device_printf(dev, "could not allocate memory resources.\n");
sc->spec_mem = NULL;
goto fail;
}
/*
* Retrieve PCI and chip revisions.
*/
pcirev = pci_get_revid(dev);
chiprev = (AE_READ_4(sc, AE_MASTER_REG) >> AE_MASTER_REVNUM_SHIFT) &
AE_MASTER_REVNUM_MASK;
if (bootverbose) {
device_printf(dev, "pci device revision: %#04x\n", pcirev);
device_printf(dev, "chip id: %#02x\n", chiprev);
}
nmsi = pci_msi_count(dev);
if (bootverbose)
device_printf(dev, "MSI count: %d.\n", nmsi);
/*
* Allocate interrupt resources.
*/
if (msi_disable == 0 && nmsi == 1) {
error = pci_alloc_msi(dev, &nmsi);
if (error == 0) {
device_printf(dev, "Using MSI messages.\n");
sc->spec_irq = ae_res_spec_msi;
error = bus_alloc_resources(dev, sc->spec_irq, sc->irq);
if (error != 0) {
device_printf(dev, "MSI allocation failed.\n");
sc->spec_irq = NULL;
pci_release_msi(dev);
} else {
sc->flags |= AE_FLAG_MSI;
}
}
}
if (sc->spec_irq == NULL) {
sc->spec_irq = ae_res_spec_irq;
error = bus_alloc_resources(dev, sc->spec_irq, sc->irq);
if (error != 0) {
device_printf(dev, "could not allocate IRQ resources.\n");
sc->spec_irq = NULL;
goto fail;
}
}
ae_init_tunables(sc);
ae_phy_reset(sc); /* Reset PHY. */
error = ae_reset(sc); /* Reset the controller itself. */
if (error != 0)
goto fail;
ae_pcie_init(sc);
ae_retrieve_address(sc); /* Load MAC address. */
error = ae_alloc_rings(sc); /* Allocate ring buffers. */
if (error != 0)
goto fail;
ifp = sc->ifp = if_alloc(IFT_ETHER);
if (ifp == NULL) {
device_printf(dev, "could not allocate ifnet structure.\n");
error = ENXIO;
goto fail;
}
ifp->if_softc = sc;
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = ae_ioctl;
ifp->if_start = ae_start;
ifp->if_init = ae_init;
ifp->if_capabilities = IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING;
ifp->if_hwassist = 0;
ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen);
IFQ_SET_READY(&ifp->if_snd);
if (pci_find_cap(dev, PCIY_PMG, &pmc) == 0) {
ifp->if_capabilities |= IFCAP_WOL_MAGIC;
sc->flags |= AE_FLAG_PMG;
}
ifp->if_capenable = ifp->if_capabilities;
/*
* Configure and attach MII bus.
*/
error = mii_attach(dev, &sc->miibus, ifp, ae_mediachange,
ae_mediastatus, BMSR_DEFCAPMASK, AE_PHYADDR_DEFAULT,
MII_OFFSET_ANY, 0);
if (error != 0) {
device_printf(dev, "attaching PHYs failed\n");
goto fail;
}
ether_ifattach(ifp, sc->eaddr);
/* Tell the upper layer(s) we support long frames. */
ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
/*
* Create and run all helper tasks.
*/
sc->tq = taskqueue_create_fast("ae_taskq", M_WAITOK,
taskqueue_thread_enqueue, &sc->tq);
if (sc->tq == NULL) {
device_printf(dev, "could not create taskqueue.\n");
ether_ifdetach(ifp);
error = ENXIO;
goto fail;
}
taskqueue_start_threads(&sc->tq, 1, PI_NET, "%s taskq",
device_get_nameunit(sc->dev));
/*
* Configure interrupt handlers.
*/
error = bus_setup_intr(dev, sc->irq[0], INTR_TYPE_NET | INTR_MPSAFE,
ae_intr, NULL, sc, &sc->intrhand);
if (error != 0) {
device_printf(dev, "could not set up interrupt handler.\n");
taskqueue_free(sc->tq);
sc->tq = NULL;
ether_ifdetach(ifp);
goto fail;
}
fail:
if (error != 0)
ae_detach(dev);
return (error);
}
#define AE_SYSCTL(stx, parent, name, desc, ptr) \
SYSCTL_ADD_UINT(ctx, parent, OID_AUTO, name, CTLFLAG_RD, ptr, 0, desc)
static void
ae_init_tunables(ae_softc_t *sc)
{
struct sysctl_ctx_list *ctx;
struct sysctl_oid *root, *stats, *stats_rx, *stats_tx;
struct ae_stats *ae_stats;
KASSERT(sc != NULL, ("[ae, %d]: sc is NULL", __LINE__));
ae_stats = &sc->stats;
ctx = device_get_sysctl_ctx(sc->dev);
root = device_get_sysctl_tree(sc->dev);
stats = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(root), OID_AUTO, "stats",
CTLFLAG_RD, NULL, "ae statistics");
/*
* Receiver statistcics.
*/
stats_rx = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(stats), OID_AUTO, "rx",
CTLFLAG_RD, NULL, "Rx MAC statistics");
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_rx), "bcast",
"broadcast frames", &ae_stats->rx_bcast);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_rx), "mcast",
"multicast frames", &ae_stats->rx_mcast);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_rx), "pause",
"PAUSE frames", &ae_stats->rx_pause);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_rx), "control",
"control frames", &ae_stats->rx_ctrl);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_rx), "crc_errors",
"frames with CRC errors", &ae_stats->rx_crcerr);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_rx), "code_errors",
"frames with invalid opcode", &ae_stats->rx_codeerr);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_rx), "runt",
"runt frames", &ae_stats->rx_runt);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_rx), "frag",
"fragmented frames", &ae_stats->rx_frag);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_rx), "align_errors",
"frames with alignment errors", &ae_stats->rx_align);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_rx), "truncated",
"frames truncated due to Rx FIFO inderrun", &ae_stats->rx_trunc);
/*
* Receiver statistcics.
*/
stats_tx = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(stats), OID_AUTO, "tx",
CTLFLAG_RD, NULL, "Tx MAC statistics");
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_tx), "bcast",
"broadcast frames", &ae_stats->tx_bcast);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_tx), "mcast",
"multicast frames", &ae_stats->tx_mcast);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_tx), "pause",
"PAUSE frames", &ae_stats->tx_pause);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_tx), "control",
"control frames", &ae_stats->tx_ctrl);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_tx), "defers",
"deferrals occuried", &ae_stats->tx_defer);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_tx), "exc_defers",
"excessive deferrals occuried", &ae_stats->tx_excdefer);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_tx), "singlecols",
"single collisions occuried", &ae_stats->tx_singlecol);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_tx), "multicols",
"multiple collisions occuried", &ae_stats->tx_multicol);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_tx), "latecols",
"late collisions occuried", &ae_stats->tx_latecol);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_tx), "aborts",
"transmit aborts due collisions", &ae_stats->tx_abortcol);
AE_SYSCTL(ctx, SYSCTL_CHILDREN(stats_tx), "underruns",
"Tx FIFO underruns", &ae_stats->tx_underrun);
}
static void
ae_pcie_init(ae_softc_t *sc)
{
AE_WRITE_4(sc, AE_PCIE_LTSSM_TESTMODE_REG, AE_PCIE_LTSSM_TESTMODE_DEFAULT);
AE_WRITE_4(sc, AE_PCIE_DLL_TX_CTRL_REG, AE_PCIE_DLL_TX_CTRL_DEFAULT);
}
static void
ae_phy_reset(ae_softc_t *sc)
{
AE_WRITE_4(sc, AE_PHY_ENABLE_REG, AE_PHY_ENABLE);
DELAY(1000); /* XXX: pause(9) ? */
}
static int
ae_reset(ae_softc_t *sc)
{
int i;
/*
* Issue a soft reset.
*/
AE_WRITE_4(sc, AE_MASTER_REG, AE_MASTER_SOFT_RESET);
bus_barrier(sc->mem[0], AE_MASTER_REG, 4,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
/*
* Wait for reset to complete.
*/
for (i = 0; i < AE_RESET_TIMEOUT; i++) {
if ((AE_READ_4(sc, AE_MASTER_REG) & AE_MASTER_SOFT_RESET) == 0)
break;
DELAY(10);
}
if (i == AE_RESET_TIMEOUT) {
device_printf(sc->dev, "reset timeout.\n");
return (ENXIO);
}
/*
* Wait for everything to enter idle state.
*/
for (i = 0; i < AE_IDLE_TIMEOUT; i++) {
if (AE_READ_4(sc, AE_IDLE_REG) == 0)
break;
DELAY(100);
}
if (i == AE_IDLE_TIMEOUT) {
device_printf(sc->dev, "could not enter idle state.\n");
return (ENXIO);
}
return (0);
}
static void
ae_init(void *arg)
{
ae_softc_t *sc;
sc = (ae_softc_t *)arg;
AE_LOCK(sc);
ae_init_locked(sc);
AE_UNLOCK(sc);
}
static void
ae_phy_init(ae_softc_t *sc)
{
/*
* Enable link status change interrupt.
* XXX magic numbers.
*/
#ifdef notyet
AE_PHY_WRITE(sc, 18, 0xc00);
#endif
}
static int
ae_init_locked(ae_softc_t *sc)
{
struct ifnet *ifp;
struct mii_data *mii;
uint8_t eaddr[ETHER_ADDR_LEN];
uint32_t val;
bus_addr_t addr;
AE_LOCK_ASSERT(sc);
ifp = sc->ifp;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
return (0);
mii = device_get_softc(sc->miibus);
ae_stop(sc);
ae_reset(sc);
ae_pcie_init(sc); /* Initialize PCIE stuff. */
ae_phy_init(sc);
ae_powersave_disable(sc);
/*
* Clear and disable interrupts.
*/
AE_WRITE_4(sc, AE_ISR_REG, 0xffffffff);
/*
* Set the MAC address.
*/
bcopy(IF_LLADDR(ifp), eaddr, ETHER_ADDR_LEN);
val = eaddr[2] << 24 | eaddr[3] << 16 | eaddr[4] << 8 | eaddr[5];
AE_WRITE_4(sc, AE_EADDR0_REG, val);
val = eaddr[0] << 8 | eaddr[1];
AE_WRITE_4(sc, AE_EADDR1_REG, val);
/*
* Set ring buffers base addresses.
*/
addr = sc->dma_rxd_busaddr;
AE_WRITE_4(sc, AE_DESC_ADDR_HI_REG, BUS_ADDR_HI(addr));
AE_WRITE_4(sc, AE_RXD_ADDR_LO_REG, BUS_ADDR_LO(addr));
addr = sc->dma_txd_busaddr;
AE_WRITE_4(sc, AE_TXD_ADDR_LO_REG, BUS_ADDR_LO(addr));
addr = sc->dma_txs_busaddr;
AE_WRITE_4(sc, AE_TXS_ADDR_LO_REG, BUS_ADDR_LO(addr));
/*
* Configure ring buffers sizes.
*/
AE_WRITE_2(sc, AE_RXD_COUNT_REG, AE_RXD_COUNT_DEFAULT);
AE_WRITE_2(sc, AE_TXD_BUFSIZE_REG, AE_TXD_BUFSIZE_DEFAULT / 4);
AE_WRITE_2(sc, AE_TXS_COUNT_REG, AE_TXS_COUNT_DEFAULT);
/*
* Configure interframe gap parameters.
*/
val = ((AE_IFG_TXIPG_DEFAULT << AE_IFG_TXIPG_SHIFT) &
AE_IFG_TXIPG_MASK) |
((AE_IFG_RXIPG_DEFAULT << AE_IFG_RXIPG_SHIFT) &
AE_IFG_RXIPG_MASK) |
((AE_IFG_IPGR1_DEFAULT << AE_IFG_IPGR1_SHIFT) &
AE_IFG_IPGR1_MASK) |
((AE_IFG_IPGR2_DEFAULT << AE_IFG_IPGR2_SHIFT) &
AE_IFG_IPGR2_MASK);
AE_WRITE_4(sc, AE_IFG_REG, val);
/*
* Configure half-duplex operation.
*/
val = ((AE_HDPX_LCOL_DEFAULT << AE_HDPX_LCOL_SHIFT) &
AE_HDPX_LCOL_MASK) |
((AE_HDPX_RETRY_DEFAULT << AE_HDPX_RETRY_SHIFT) &
AE_HDPX_RETRY_MASK) |
((AE_HDPX_ABEBT_DEFAULT << AE_HDPX_ABEBT_SHIFT) &
AE_HDPX_ABEBT_MASK) |
((AE_HDPX_JAMIPG_DEFAULT << AE_HDPX_JAMIPG_SHIFT) &
AE_HDPX_JAMIPG_MASK) | AE_HDPX_EXC_EN;
AE_WRITE_4(sc, AE_HDPX_REG, val);
/*
* Configure interrupt moderate timer.
*/
AE_WRITE_2(sc, AE_IMT_REG, AE_IMT_DEFAULT);
val = AE_READ_4(sc, AE_MASTER_REG);
val |= AE_MASTER_IMT_EN;
AE_WRITE_4(sc, AE_MASTER_REG, val);
/*
* Configure interrupt clearing timer.
*/
AE_WRITE_2(sc, AE_ICT_REG, AE_ICT_DEFAULT);
/*
* Configure MTU.
*/
val = ifp->if_mtu + ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN +
ETHER_CRC_LEN;
AE_WRITE_2(sc, AE_MTU_REG, val);
/*
* Configure cut-through threshold.
*/
AE_WRITE_4(sc, AE_CUT_THRESH_REG, AE_CUT_THRESH_DEFAULT);
/*
* Configure flow control.
*/
AE_WRITE_2(sc, AE_FLOW_THRESH_HI_REG, (AE_RXD_COUNT_DEFAULT / 8) * 7);
AE_WRITE_2(sc, AE_FLOW_THRESH_LO_REG, (AE_RXD_COUNT_MIN / 8) >
(AE_RXD_COUNT_DEFAULT / 12) ? (AE_RXD_COUNT_MIN / 8) :
(AE_RXD_COUNT_DEFAULT / 12));
/*
* Init mailboxes.
*/
sc->txd_cur = sc->rxd_cur = 0;
sc->txs_ack = sc->txd_ack = 0;
sc->rxd_cur = 0;
AE_WRITE_2(sc, AE_MB_TXD_IDX_REG, sc->txd_cur);
AE_WRITE_2(sc, AE_MB_RXD_IDX_REG, sc->rxd_cur);
sc->tx_inproc = 0; /* Number of packets the chip processes now. */
sc->flags |= AE_FLAG_TXAVAIL; /* Free Tx's available. */
/*
* Enable DMA.
*/
AE_WRITE_1(sc, AE_DMAREAD_REG, AE_DMAREAD_EN);
AE_WRITE_1(sc, AE_DMAWRITE_REG, AE_DMAWRITE_EN);
/*
* Check if everything is OK.
*/
val = AE_READ_4(sc, AE_ISR_REG);
if ((val & AE_ISR_PHY_LINKDOWN) != 0) {
device_printf(sc->dev, "Initialization failed.\n");
return (ENXIO);
}
/*
* Clear interrupt status.
*/
AE_WRITE_4(sc, AE_ISR_REG, 0x3fffffff);
AE_WRITE_4(sc, AE_ISR_REG, 0x0);
/*
* Enable interrupts.
*/
val = AE_READ_4(sc, AE_MASTER_REG);
AE_WRITE_4(sc, AE_MASTER_REG, val | AE_MASTER_MANUAL_INT);
AE_WRITE_4(sc, AE_IMR_REG, AE_IMR_DEFAULT);
/*
* Disable WOL.
*/
AE_WRITE_4(sc, AE_WOL_REG, 0);
/*
* Configure MAC.
*/
val = AE_MAC_TX_CRC_EN | AE_MAC_TX_AUTOPAD |
AE_MAC_FULL_DUPLEX | AE_MAC_CLK_PHY |
AE_MAC_TX_FLOW_EN | AE_MAC_RX_FLOW_EN |
((AE_HALFBUF_DEFAULT << AE_HALFBUF_SHIFT) & AE_HALFBUF_MASK) |
((AE_MAC_PREAMBLE_DEFAULT << AE_MAC_PREAMBLE_SHIFT) &
AE_MAC_PREAMBLE_MASK);
AE_WRITE_4(sc, AE_MAC_REG, val);
/*
* Configure Rx MAC.
*/
ae_rxfilter(sc);
ae_rxvlan(sc);
/*
* Enable Tx/Rx.
*/
val = AE_READ_4(sc, AE_MAC_REG);
AE_WRITE_4(sc, AE_MAC_REG, val | AE_MAC_TX_EN | AE_MAC_RX_EN);
sc->flags &= ~AE_FLAG_LINK;
mii_mediachg(mii); /* Switch to the current media. */
callout_reset(&sc->tick_ch, hz, ae_tick, sc);
ifp->if_drv_flags |= IFF_DRV_RUNNING;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
#ifdef AE_DEBUG
device_printf(sc->dev, "Initialization complete.\n");
#endif
return (0);
}
static int
ae_detach(device_t dev)
{
struct ae_softc *sc;
struct ifnet *ifp;
sc = device_get_softc(dev);
KASSERT(sc != NULL, ("[ae: %d]: sc is NULL", __LINE__));
ifp = sc->ifp;
if (device_is_attached(dev)) {
AE_LOCK(sc);
sc->flags |= AE_FLAG_DETACH;
ae_stop(sc);
AE_UNLOCK(sc);
callout_drain(&sc->tick_ch);
taskqueue_drain(sc->tq, &sc->int_task);
taskqueue_drain(taskqueue_swi, &sc->link_task);
ether_ifdetach(ifp);
}
if (sc->tq != NULL) {
taskqueue_drain(sc->tq, &sc->int_task);
taskqueue_free(sc->tq);
sc->tq = NULL;
}
if (sc->miibus != NULL) {
device_delete_child(dev, sc->miibus);
sc->miibus = NULL;
}
bus_generic_detach(sc->dev);
ae_dma_free(sc);
if (sc->intrhand != NULL) {
bus_teardown_intr(dev, sc->irq[0], sc->intrhand);
sc->intrhand = NULL;
}
if (ifp != NULL) {
if_free(ifp);
sc->ifp = NULL;
}
if (sc->spec_irq != NULL)
bus_release_resources(dev, sc->spec_irq, sc->irq);
if (sc->spec_mem != NULL)
bus_release_resources(dev, sc->spec_mem, sc->mem);
if ((sc->flags & AE_FLAG_MSI) != 0)
pci_release_msi(dev);
mtx_destroy(&sc->mtx);
return (0);
}
static int
ae_miibus_readreg(device_t dev, int phy, int reg)
{
ae_softc_t *sc;
uint32_t val;
int i;
sc = device_get_softc(dev);
KASSERT(sc != NULL, ("[ae, %d]: sc is NULL", __LINE__));
/*
* Locking is done in upper layers.
*/
val = ((reg << AE_MDIO_REGADDR_SHIFT) & AE_MDIO_REGADDR_MASK) |
AE_MDIO_START | AE_MDIO_READ | AE_MDIO_SUP_PREAMBLE |
((AE_MDIO_CLK_25_4 << AE_MDIO_CLK_SHIFT) & AE_MDIO_CLK_MASK);
AE_WRITE_4(sc, AE_MDIO_REG, val);
/*
* Wait for operation to complete.
*/
for (i = 0; i < AE_MDIO_TIMEOUT; i++) {
DELAY(2);
val = AE_READ_4(sc, AE_MDIO_REG);
if ((val & (AE_MDIO_START | AE_MDIO_BUSY)) == 0)
break;
}
if (i == AE_MDIO_TIMEOUT) {
device_printf(sc->dev, "phy read timeout: %d.\n", reg);
return (0);
}
return ((val << AE_MDIO_DATA_SHIFT) & AE_MDIO_DATA_MASK);
}
static int
ae_miibus_writereg(device_t dev, int phy, int reg, int val)
{
ae_softc_t *sc;
uint32_t aereg;
int i;
sc = device_get_softc(dev);
KASSERT(sc != NULL, ("[ae, %d]: sc is NULL", __LINE__));
/*
* Locking is done in upper layers.
*/
aereg = ((reg << AE_MDIO_REGADDR_SHIFT) & AE_MDIO_REGADDR_MASK) |
AE_MDIO_START | AE_MDIO_SUP_PREAMBLE |
((AE_MDIO_CLK_25_4 << AE_MDIO_CLK_SHIFT) & AE_MDIO_CLK_MASK) |
((val << AE_MDIO_DATA_SHIFT) & AE_MDIO_DATA_MASK);
AE_WRITE_4(sc, AE_MDIO_REG, aereg);
/*
* Wait for operation to complete.
*/
for (i = 0; i < AE_MDIO_TIMEOUT; i++) {
DELAY(2);
aereg = AE_READ_4(sc, AE_MDIO_REG);
if ((aereg & (AE_MDIO_START | AE_MDIO_BUSY)) == 0)
break;
}
if (i == AE_MDIO_TIMEOUT) {
device_printf(sc->dev, "phy write timeout: %d.\n", reg);
}
return (0);
}
static void
ae_miibus_statchg(device_t dev)
{
ae_softc_t *sc;
sc = device_get_softc(dev);
taskqueue_enqueue(taskqueue_swi, &sc->link_task);
}
static void
ae_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
{
ae_softc_t *sc;
struct mii_data *mii;
sc = ifp->if_softc;
KASSERT(sc != NULL, ("[ae, %d]: sc is NULL", __LINE__));
AE_LOCK(sc);
mii = device_get_softc(sc->miibus);
mii_pollstat(mii);
ifmr->ifm_status = mii->mii_media_status;
ifmr->ifm_active = mii->mii_media_active;
AE_UNLOCK(sc);
}
static int
ae_mediachange(struct ifnet *ifp)
{
ae_softc_t *sc;
struct mii_data *mii;
struct mii_softc *mii_sc;
int error;
/* XXX: check IFF_UP ?? */
sc = ifp->if_softc;
KASSERT(sc != NULL, ("[ae, %d]: sc is NULL", __LINE__));
AE_LOCK(sc);
mii = device_get_softc(sc->miibus);
LIST_FOREACH(mii_sc, &mii->mii_phys, mii_list)
PHY_RESET(mii_sc);
error = mii_mediachg(mii);
AE_UNLOCK(sc);
return (error);
}
static int
ae_check_eeprom_present(ae_softc_t *sc, int *vpdc)
{
int error;
uint32_t val;
KASSERT(vpdc != NULL, ("[ae, %d]: vpdc is NULL!\n", __LINE__));
/*
* Not sure why, but Linux does this.
*/
val = AE_READ_4(sc, AE_SPICTL_REG);
if ((val & AE_SPICTL_VPD_EN) != 0) {
val &= ~AE_SPICTL_VPD_EN;
AE_WRITE_4(sc, AE_SPICTL_REG, val);
}
error = pci_find_cap(sc->dev, PCIY_VPD, vpdc);
return (error);
}
static int
ae_vpd_read_word(ae_softc_t *sc, int reg, uint32_t *word)
{
uint32_t val;
int i;
AE_WRITE_4(sc, AE_VPD_DATA_REG, 0); /* Clear register value. */
/*
* VPD registers start at offset 0x100. Read them.
*/
val = 0x100 + reg * 4;
AE_WRITE_4(sc, AE_VPD_CAP_REG, (val << AE_VPD_CAP_ADDR_SHIFT) &
AE_VPD_CAP_ADDR_MASK);
for (i = 0; i < AE_VPD_TIMEOUT; i++) {
DELAY(2000);
val = AE_READ_4(sc, AE_VPD_CAP_REG);
if ((val & AE_VPD_CAP_DONE) != 0)
break;
}
if (i == AE_VPD_TIMEOUT) {
device_printf(sc->dev, "timeout reading VPD register %d.\n",
reg);
return (ETIMEDOUT);
}
*word = AE_READ_4(sc, AE_VPD_DATA_REG);
return (0);
}
static int
ae_get_vpd_eaddr(ae_softc_t *sc, uint32_t *eaddr)
{
uint32_t word, reg, val;
int error;
int found;
int vpdc;
int i;
KASSERT(sc != NULL, ("[ae, %d]: sc is NULL", __LINE__));
KASSERT(eaddr != NULL, ("[ae, %d]: eaddr is NULL", __LINE__));
/*
* Check for EEPROM.
*/
error = ae_check_eeprom_present(sc, &vpdc);
if (error != 0)
return (error);
/*
* Read the VPD configuration space.
* Each register is prefixed with signature,
* so we can check if it is valid.
*/
for (i = 0, found = 0; i < AE_VPD_NREGS; i++) {
error = ae_vpd_read_word(sc, i, &word);
if (error != 0)
break;
/*
* Check signature.
*/
if ((word & AE_VPD_SIG_MASK) != AE_VPD_SIG)
break;
reg = word >> AE_VPD_REG_SHIFT;
i++; /* Move to the next word. */
if (reg != AE_EADDR0_REG && reg != AE_EADDR1_REG)
continue;
error = ae_vpd_read_word(sc, i, &val);
if (error != 0)
break;
if (reg == AE_EADDR0_REG)
eaddr[0] = val;
else
eaddr[1] = val;
found++;
}
if (found < 2)
return (ENOENT);
eaddr[1] &= 0xffff; /* Only last 2 bytes are used. */
if (AE_CHECK_EADDR_VALID(eaddr) != 0) {
if (bootverbose)
device_printf(sc->dev,
"VPD ethernet address registers are invalid.\n");
return (EINVAL);
}
return (0);
}
static int
ae_get_reg_eaddr(ae_softc_t *sc, uint32_t *eaddr)
{
/*
* BIOS is supposed to set this.
*/
eaddr[0] = AE_READ_4(sc, AE_EADDR0_REG);
eaddr[1] = AE_READ_4(sc, AE_EADDR1_REG);
eaddr[1] &= 0xffff; /* Only last 2 bytes are used. */
if (AE_CHECK_EADDR_VALID(eaddr) != 0) {
if (bootverbose)
device_printf(sc->dev,
"Ethernet address registers are invalid.\n");
return (EINVAL);
}
return (0);
}
static void
ae_retrieve_address(ae_softc_t *sc)
{
uint32_t eaddr[2] = {0, 0};
int error;
/*
*Check for EEPROM.
*/
error = ae_get_vpd_eaddr(sc, eaddr);
if (error != 0)
error = ae_get_reg_eaddr(sc, eaddr);
if (error != 0) {
if (bootverbose)
device_printf(sc->dev,
"Generating random ethernet address.\n");
eaddr[0] = arc4random();
/*
* Set OUI to ASUSTek COMPUTER INC.
*/
sc->eaddr[0] = 0x02; /* U/L bit set. */
sc->eaddr[1] = 0x1f;
sc->eaddr[2] = 0xc6;
sc->eaddr[3] = (eaddr[0] >> 16) & 0xff;
sc->eaddr[4] = (eaddr[0] >> 8) & 0xff;
sc->eaddr[5] = (eaddr[0] >> 0) & 0xff;
} else {
sc->eaddr[0] = (eaddr[1] >> 8) & 0xff;
sc->eaddr[1] = (eaddr[1] >> 0) & 0xff;
sc->eaddr[2] = (eaddr[0] >> 24) & 0xff;
sc->eaddr[3] = (eaddr[0] >> 16) & 0xff;
sc->eaddr[4] = (eaddr[0] >> 8) & 0xff;
sc->eaddr[5] = (eaddr[0] >> 0) & 0xff;
}
}
static void
ae_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
{
bus_addr_t *addr = arg;
if (error != 0)
return;
KASSERT(nsegs == 1, ("[ae, %d]: %d segments instead of 1!", __LINE__,
nsegs));
*addr = segs[0].ds_addr;
}
static int
ae_alloc_rings(ae_softc_t *sc)
{
bus_addr_t busaddr;
int error;
/*
* Create parent DMA tag.
*/
error = bus_dma_tag_create(bus_get_dma_tag(sc->dev),
1, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
NULL, NULL, BUS_SPACE_MAXSIZE_32BIT, 0,
BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL,
&sc->dma_parent_tag);
if (error != 0) {
device_printf(sc->dev, "could not creare parent DMA tag.\n");
return (error);
}
/*
* Create DMA tag for TxD.
*/
error = bus_dma_tag_create(sc->dma_parent_tag,
4, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
NULL, NULL, AE_TXD_BUFSIZE_DEFAULT, 1,
AE_TXD_BUFSIZE_DEFAULT, 0, NULL, NULL,
&sc->dma_txd_tag);
if (error != 0) {
device_printf(sc->dev, "could not creare TxD DMA tag.\n");
return (error);
}
/*
* Create DMA tag for TxS.
*/
error = bus_dma_tag_create(sc->dma_parent_tag,
4, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
NULL, NULL, AE_TXS_COUNT_DEFAULT * 4, 1,
AE_TXS_COUNT_DEFAULT * 4, 0, NULL, NULL,
&sc->dma_txs_tag);
if (error != 0) {
device_printf(sc->dev, "could not creare TxS DMA tag.\n");
return (error);
}
/*
* Create DMA tag for RxD.
*/
error = bus_dma_tag_create(sc->dma_parent_tag,
128, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
NULL, NULL, AE_RXD_COUNT_DEFAULT * 1536 + 120, 1,
AE_RXD_COUNT_DEFAULT * 1536 + 120, 0, NULL, NULL,
&sc->dma_rxd_tag);
if (error != 0) {
device_printf(sc->dev, "could not creare TxS DMA tag.\n");
return (error);
}
/*
* Allocate TxD DMA memory.
*/
error = bus_dmamem_alloc(sc->dma_txd_tag, (void **)&sc->txd_base,
BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
&sc->dma_txd_map);
if (error != 0) {
device_printf(sc->dev,
"could not allocate DMA memory for TxD ring.\n");
return (error);
}
error = bus_dmamap_load(sc->dma_txd_tag, sc->dma_txd_map, sc->txd_base,
AE_TXD_BUFSIZE_DEFAULT, ae_dmamap_cb, &busaddr, BUS_DMA_NOWAIT);
if (error != 0 || busaddr == 0) {
device_printf(sc->dev,
"could not load DMA map for TxD ring.\n");
return (error);
}
sc->dma_txd_busaddr = busaddr;
/*
* Allocate TxS DMA memory.
*/
error = bus_dmamem_alloc(sc->dma_txs_tag, (void **)&sc->txs_base,
BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
&sc->dma_txs_map);
if (error != 0) {
device_printf(sc->dev,
"could not allocate DMA memory for TxS ring.\n");
return (error);
}
error = bus_dmamap_load(sc->dma_txs_tag, sc->dma_txs_map, sc->txs_base,
AE_TXS_COUNT_DEFAULT * 4, ae_dmamap_cb, &busaddr, BUS_DMA_NOWAIT);
if (error != 0 || busaddr == 0) {
device_printf(sc->dev,
"could not load DMA map for TxS ring.\n");
return (error);
}
sc->dma_txs_busaddr = busaddr;
/*
* Allocate RxD DMA memory.
*/
error = bus_dmamem_alloc(sc->dma_rxd_tag, (void **)&sc->rxd_base_dma,
BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
&sc->dma_rxd_map);
if (error != 0) {
device_printf(sc->dev,
"could not allocate DMA memory for RxD ring.\n");
return (error);
}
error = bus_dmamap_load(sc->dma_rxd_tag, sc->dma_rxd_map,
sc->rxd_base_dma, AE_RXD_COUNT_DEFAULT * 1536 + 120, ae_dmamap_cb,
&busaddr, BUS_DMA_NOWAIT);
if (error != 0 || busaddr == 0) {
device_printf(sc->dev,
"could not load DMA map for RxD ring.\n");
return (error);
}
sc->dma_rxd_busaddr = busaddr + 120;
sc->rxd_base = (ae_rxd_t *)(sc->rxd_base_dma + 120);
return (0);
}
static void
ae_dma_free(ae_softc_t *sc)
{
if (sc->dma_txd_tag != NULL) {
if (sc->dma_txd_map != NULL) {
bus_dmamap_unload(sc->dma_txd_tag, sc->dma_txd_map);
if (sc->txd_base != NULL)
bus_dmamem_free(sc->dma_txd_tag, sc->txd_base,
sc->dma_txd_map);
}
bus_dma_tag_destroy(sc->dma_txd_tag);
sc->dma_txd_map = NULL;
sc->dma_txd_tag = NULL;
sc->txd_base = NULL;
}
if (sc->dma_txs_tag != NULL) {
if (sc->dma_txs_map != NULL) {
bus_dmamap_unload(sc->dma_txs_tag, sc->dma_txs_map);
if (sc->txs_base != NULL)
bus_dmamem_free(sc->dma_txs_tag, sc->txs_base,
sc->dma_txs_map);
}
bus_dma_tag_destroy(sc->dma_txs_tag);
sc->dma_txs_map = NULL;
sc->dma_txs_tag = NULL;
sc->txs_base = NULL;
}
if (sc->dma_rxd_tag != NULL) {
if (sc->dma_rxd_map != NULL) {
bus_dmamap_unload(sc->dma_rxd_tag, sc->dma_rxd_map);
if (sc->rxd_base_dma != NULL)
bus_dmamem_free(sc->dma_rxd_tag,
sc->rxd_base_dma, sc->dma_rxd_map);
}
bus_dma_tag_destroy(sc->dma_rxd_tag);
sc->dma_rxd_map = NULL;
sc->dma_rxd_tag = NULL;
sc->rxd_base_dma = NULL;
}
if (sc->dma_parent_tag != NULL) {
bus_dma_tag_destroy(sc->dma_parent_tag);
sc->dma_parent_tag = NULL;
}
}
static int
ae_shutdown(device_t dev)
{
ae_softc_t *sc;
int error;
sc = device_get_softc(dev);
KASSERT(sc != NULL, ("[ae: %d]: sc is NULL", __LINE__));
error = ae_suspend(dev);
AE_LOCK(sc);
ae_powersave_enable(sc);
AE_UNLOCK(sc);
return (error);
}
static void
ae_powersave_disable(ae_softc_t *sc)
{
uint32_t val;
AE_LOCK_ASSERT(sc);
AE_PHY_WRITE(sc, AE_PHY_DBG_ADDR, 0);
val = AE_PHY_READ(sc, AE_PHY_DBG_DATA);
if (val & AE_PHY_DBG_POWERSAVE) {
val &= ~AE_PHY_DBG_POWERSAVE;
AE_PHY_WRITE(sc, AE_PHY_DBG_DATA, val);
DELAY(1000);
}
}
static void
ae_powersave_enable(ae_softc_t *sc)
{
uint32_t val;
AE_LOCK_ASSERT(sc);
/*
* XXX magic numbers.
*/
AE_PHY_WRITE(sc, AE_PHY_DBG_ADDR, 0);
val = AE_PHY_READ(sc, AE_PHY_DBG_DATA);
AE_PHY_WRITE(sc, AE_PHY_DBG_ADDR, val | 0x1000);
AE_PHY_WRITE(sc, AE_PHY_DBG_ADDR, 2);
AE_PHY_WRITE(sc, AE_PHY_DBG_DATA, 0x3000);
AE_PHY_WRITE(sc, AE_PHY_DBG_ADDR, 3);
AE_PHY_WRITE(sc, AE_PHY_DBG_DATA, 0);
}
static void
ae_pm_init(ae_softc_t *sc)
{
struct ifnet *ifp;
uint32_t val;
uint16_t pmstat;
struct mii_data *mii;
int pmc;
AE_LOCK_ASSERT(sc);
ifp = sc->ifp;
if ((sc->flags & AE_FLAG_PMG) == 0) {
/* Disable WOL entirely. */
AE_WRITE_4(sc, AE_WOL_REG, 0);
return;
}
/*
* Configure WOL if enabled.
*/
if ((ifp->if_capenable & IFCAP_WOL) != 0) {
mii = device_get_softc(sc->miibus);
mii_pollstat(mii);
if ((mii->mii_media_status & IFM_AVALID) != 0 &&
(mii->mii_media_status & IFM_ACTIVE) != 0) {
AE_WRITE_4(sc, AE_WOL_REG, AE_WOL_MAGIC | \
AE_WOL_MAGIC_PME);
/*
* Configure MAC.
*/
val = AE_MAC_RX_EN | AE_MAC_CLK_PHY | \
AE_MAC_TX_CRC_EN | AE_MAC_TX_AUTOPAD | \
((AE_HALFBUF_DEFAULT << AE_HALFBUF_SHIFT) & \
AE_HALFBUF_MASK) | \
((AE_MAC_PREAMBLE_DEFAULT << \
AE_MAC_PREAMBLE_SHIFT) & AE_MAC_PREAMBLE_MASK) | \
AE_MAC_BCAST_EN | AE_MAC_MCAST_EN;
if ((IFM_OPTIONS(mii->mii_media_active) & \
IFM_FDX) != 0)
val |= AE_MAC_FULL_DUPLEX;
AE_WRITE_4(sc, AE_MAC_REG, val);
} else { /* No link. */
AE_WRITE_4(sc, AE_WOL_REG, AE_WOL_LNKCHG | \
AE_WOL_LNKCHG_PME);
AE_WRITE_4(sc, AE_MAC_REG, 0);
}
} else {
ae_powersave_enable(sc);
}
/*
* PCIE hacks. Magic numbers.
*/
val = AE_READ_4(sc, AE_PCIE_PHYMISC_REG);
val |= AE_PCIE_PHYMISC_FORCE_RCV_DET;
AE_WRITE_4(sc, AE_PCIE_PHYMISC_REG, val);
val = AE_READ_4(sc, AE_PCIE_DLL_TX_CTRL_REG);
val |= AE_PCIE_DLL_TX_CTRL_SEL_NOR_CLK;
AE_WRITE_4(sc, AE_PCIE_DLL_TX_CTRL_REG, val);
/*
* Configure PME.
*/
pci_find_cap(sc->dev, PCIY_PMG, &pmc);
pmstat = pci_read_config(sc->dev, pmc + PCIR_POWER_STATUS, 2);
pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
if ((ifp->if_capenable & IFCAP_WOL) != 0)
pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
pci_write_config(sc->dev, pmc + PCIR_POWER_STATUS, pmstat, 2);
}
static int
ae_suspend(device_t dev)
{
ae_softc_t *sc;
sc = device_get_softc(dev);
AE_LOCK(sc);
ae_stop(sc);
ae_pm_init(sc);
AE_UNLOCK(sc);
return (0);
}
static int
ae_resume(device_t dev)
{
ae_softc_t *sc;
sc = device_get_softc(dev);
KASSERT(sc != NULL, ("[ae, %d]: sc is NULL", __LINE__));
AE_LOCK(sc);
AE_READ_4(sc, AE_WOL_REG); /* Clear WOL status. */
if ((sc->ifp->if_flags & IFF_UP) != 0)
ae_init_locked(sc);
AE_UNLOCK(sc);
return (0);
}
static unsigned int
ae_tx_avail_size(ae_softc_t *sc)
{
unsigned int avail;
if (sc->txd_cur >= sc->txd_ack)
avail = AE_TXD_BUFSIZE_DEFAULT - (sc->txd_cur - sc->txd_ack);
else
avail = sc->txd_ack - sc->txd_cur;
return (avail - 4); /* 4-byte header. */
}
static int
ae_encap(ae_softc_t *sc, struct mbuf **m_head)
{
struct mbuf *m0;
ae_txd_t *hdr;
unsigned int to_end;
uint16_t len;
AE_LOCK_ASSERT(sc);
m0 = *m_head;
len = m0->m_pkthdr.len;
if ((sc->flags & AE_FLAG_TXAVAIL) == 0 ||
ae_tx_avail_size(sc) < len) {
#ifdef AE_DEBUG
if_printf(sc->ifp, "No free Tx available.\n");
#endif
return ENOBUFS;
}
hdr = (ae_txd_t *)(sc->txd_base + sc->txd_cur);
bzero(hdr, sizeof(*hdr));
sc->txd_cur = (sc->txd_cur + 4) % AE_TXD_BUFSIZE_DEFAULT; /* Header
size. */
to_end = AE_TXD_BUFSIZE_DEFAULT - sc->txd_cur; /* Space available to
* the end of the ring
*/
if (to_end >= len) {
m_copydata(m0, 0, len, (caddr_t)(sc->txd_base + sc->txd_cur));
} else {
m_copydata(m0, 0, to_end, (caddr_t)(sc->txd_base +
sc->txd_cur));
m_copydata(m0, to_end, len - to_end, (caddr_t)sc->txd_base);
}
/*
* Set TxD flags and parameters.
*/
if ((m0->m_flags & M_VLANTAG) != 0) {
hdr->vlan = htole16(AE_TXD_VLAN(m0->m_pkthdr.ether_vtag));
hdr->len = htole16(len | AE_TXD_INSERT_VTAG);
} else {
hdr->len = htole16(len);
}
/*
* Set current TxD position and round up to a 4-byte boundary.
*/
sc->txd_cur = ((sc->txd_cur + len + 3) & ~3) % AE_TXD_BUFSIZE_DEFAULT;
if (sc->txd_cur == sc->txd_ack)
sc->flags &= ~AE_FLAG_TXAVAIL;
#ifdef AE_DEBUG
if_printf(sc->ifp, "New txd_cur = %d.\n", sc->txd_cur);
#endif
/*
* Update TxS position and check if there are empty TxS available.
*/
sc->txs_base[sc->txs_cur].flags &= ~htole16(AE_TXS_UPDATE);
sc->txs_cur = (sc->txs_cur + 1) % AE_TXS_COUNT_DEFAULT;
if (sc->txs_cur == sc->txs_ack)
sc->flags &= ~AE_FLAG_TXAVAIL;
/*
* Synchronize DMA memory.
*/
bus_dmamap_sync(sc->dma_txd_tag, sc->dma_txd_map, BUS_DMASYNC_PREREAD |
BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(sc->dma_txs_tag, sc->dma_txs_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
return (0);
}
static void
ae_start(struct ifnet *ifp)
{
ae_softc_t *sc;
sc = ifp->if_softc;
AE_LOCK(sc);
ae_start_locked(ifp);
AE_UNLOCK(sc);
}
static void
ae_start_locked(struct ifnet *ifp)
{
ae_softc_t *sc;
unsigned int count;
struct mbuf *m0;
int error;
sc = ifp->if_softc;
KASSERT(sc != NULL, ("[ae, %d]: sc is NULL", __LINE__));
AE_LOCK_ASSERT(sc);
#ifdef AE_DEBUG
if_printf(ifp, "Start called.\n");
#endif
if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
IFF_DRV_RUNNING || (sc->flags & AE_FLAG_LINK) == 0)
return;
count = 0;
while (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) {
IFQ_DRV_DEQUEUE(&ifp->if_snd, m0);
if (m0 == NULL)
break; /* Nothing to do. */
error = ae_encap(sc, &m0);
if (error != 0) {
if (m0 != NULL) {
IFQ_DRV_PREPEND(&ifp->if_snd, m0);
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
#ifdef AE_DEBUG
if_printf(ifp, "Setting OACTIVE.\n");
#endif
}
break;
}
count++;
sc->tx_inproc++;
/* Bounce a copy of the frame to BPF. */
ETHER_BPF_MTAP(ifp, m0);
m_freem(m0);
}
if (count > 0) { /* Something was dequeued. */
AE_WRITE_2(sc, AE_MB_TXD_IDX_REG, sc->txd_cur / 4);
sc->wd_timer = AE_TX_TIMEOUT; /* Load watchdog. */
#ifdef AE_DEBUG
if_printf(ifp, "%d packets dequeued.\n", count);
if_printf(ifp, "Tx pos now is %d.\n", sc->txd_cur);
#endif
}
}
static void
ae_link_task(void *arg, int pending)
{
ae_softc_t *sc;
struct mii_data *mii;
struct ifnet *ifp;
uint32_t val;
sc = (ae_softc_t *)arg;
KASSERT(sc != NULL, ("[ae, %d]: sc is NULL", __LINE__));
AE_LOCK(sc);
ifp = sc->ifp;
mii = device_get_softc(sc->miibus);
if (mii == NULL || ifp == NULL ||
(ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
AE_UNLOCK(sc); /* XXX: could happen? */
return;
}
sc->flags &= ~AE_FLAG_LINK;
if ((mii->mii_media_status & (IFM_AVALID | IFM_ACTIVE)) ==
(IFM_AVALID | IFM_ACTIVE)) {
switch(IFM_SUBTYPE(mii->mii_media_active)) {
case IFM_10_T:
case IFM_100_TX:
sc->flags |= AE_FLAG_LINK;
break;
default:
break;
}
}
/*
* Stop Rx/Tx MACs.
*/
ae_stop_rxmac(sc);
ae_stop_txmac(sc);
if ((sc->flags & AE_FLAG_LINK) != 0) {
ae_mac_config(sc);
/*
* Restart DMA engines.
*/
AE_WRITE_1(sc, AE_DMAREAD_REG, AE_DMAREAD_EN);
AE_WRITE_1(sc, AE_DMAWRITE_REG, AE_DMAWRITE_EN);
/*
* Enable Rx and Tx MACs.
*/
val = AE_READ_4(sc, AE_MAC_REG);
val |= AE_MAC_TX_EN | AE_MAC_RX_EN;
AE_WRITE_4(sc, AE_MAC_REG, val);
}
AE_UNLOCK(sc);
}
static void
ae_stop_rxmac(ae_softc_t *sc)
{
uint32_t val;
int i;
AE_LOCK_ASSERT(sc);
/*
* Stop Rx MAC engine.
*/
val = AE_READ_4(sc, AE_MAC_REG);
if ((val & AE_MAC_RX_EN) != 0) {
val &= ~AE_MAC_RX_EN;
AE_WRITE_4(sc, AE_MAC_REG, val);
}
/*
* Stop Rx DMA engine.
*/
if (AE_READ_1(sc, AE_DMAWRITE_REG) == AE_DMAWRITE_EN)
AE_WRITE_1(sc, AE_DMAWRITE_REG, 0);
/*
* Wait for IDLE state.
*/
for (i = 0; i < AE_IDLE_TIMEOUT; i--) {
val = AE_READ_4(sc, AE_IDLE_REG);
if ((val & (AE_IDLE_RXMAC | AE_IDLE_DMAWRITE)) == 0)
break;
DELAY(100);
}
if (i == AE_IDLE_TIMEOUT)
device_printf(sc->dev, "timed out while stopping Rx MAC.\n");
}
static void
ae_stop_txmac(ae_softc_t *sc)
{
uint32_t val;
int i;
AE_LOCK_ASSERT(sc);
/*
* Stop Tx MAC engine.
*/
val = AE_READ_4(sc, AE_MAC_REG);
if ((val & AE_MAC_TX_EN) != 0) {
val &= ~AE_MAC_TX_EN;
AE_WRITE_4(sc, AE_MAC_REG, val);
}
/*
* Stop Tx DMA engine.
*/
if (AE_READ_1(sc, AE_DMAREAD_REG) == AE_DMAREAD_EN)
AE_WRITE_1(sc, AE_DMAREAD_REG, 0);
/*
* Wait for IDLE state.
*/
for (i = 0; i < AE_IDLE_TIMEOUT; i--) {
val = AE_READ_4(sc, AE_IDLE_REG);
if ((val & (AE_IDLE_TXMAC | AE_IDLE_DMAREAD)) == 0)
break;
DELAY(100);
}
if (i == AE_IDLE_TIMEOUT)
device_printf(sc->dev, "timed out while stopping Tx MAC.\n");
}
static void
ae_mac_config(ae_softc_t *sc)
{
struct mii_data *mii;
uint32_t val;
AE_LOCK_ASSERT(sc);
mii = device_get_softc(sc->miibus);
val = AE_READ_4(sc, AE_MAC_REG);
val &= ~AE_MAC_FULL_DUPLEX;
/* XXX disable AE_MAC_TX_FLOW_EN? */
if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0)
val |= AE_MAC_FULL_DUPLEX;
AE_WRITE_4(sc, AE_MAC_REG, val);
}
static int
ae_intr(void *arg)
{
ae_softc_t *sc;
uint32_t val;
sc = (ae_softc_t *)arg;
KASSERT(sc != NULL, ("[ae, %d]: sc is NULL", __LINE__));
val = AE_READ_4(sc, AE_ISR_REG);
if (val == 0 || (val & AE_IMR_DEFAULT) == 0)
return (FILTER_STRAY);
/* Disable interrupts. */
AE_WRITE_4(sc, AE_ISR_REG, AE_ISR_DISABLE);
/* Schedule interrupt processing. */
taskqueue_enqueue(sc->tq, &sc->int_task);
return (FILTER_HANDLED);
}
static void
ae_int_task(void *arg, int pending)
{
ae_softc_t *sc;
struct ifnet *ifp;
uint32_t val;
sc = (ae_softc_t *)arg;
AE_LOCK(sc);
ifp = sc->ifp;
val = AE_READ_4(sc, AE_ISR_REG); /* Read interrupt status. */
/*
* Clear interrupts and disable them.
*/
AE_WRITE_4(sc, AE_ISR_REG, val | AE_ISR_DISABLE);
#ifdef AE_DEBUG
if_printf(ifp, "Interrupt received: 0x%08x\n", val);
#endif
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
if ((val & (AE_ISR_DMAR_TIMEOUT | AE_ISR_DMAW_TIMEOUT |
AE_ISR_PHY_LINKDOWN)) != 0) {
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
ae_init_locked(sc);
AE_UNLOCK(sc);
return;
}
if ((val & AE_ISR_TX_EVENT) != 0)
ae_tx_intr(sc);
if ((val & AE_ISR_RX_EVENT) != 0)
ae_rx_intr(sc);
}
/*
* Re-enable interrupts.
*/
AE_WRITE_4(sc, AE_ISR_REG, 0);
AE_UNLOCK(sc);
}
static void
ae_tx_intr(ae_softc_t *sc)
{
struct ifnet *ifp;
ae_txd_t *txd;
ae_txs_t *txs;
uint16_t flags;
AE_LOCK_ASSERT(sc);
ifp = sc->ifp;
#ifdef AE_DEBUG
if_printf(ifp, "Tx interrupt occuried.\n");
#endif
/*
* Syncronize DMA buffers.
*/
bus_dmamap_sync(sc->dma_txd_tag, sc->dma_txd_map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
bus_dmamap_sync(sc->dma_txs_tag, sc->dma_txs_map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
for (;;) {
txs = sc->txs_base + sc->txs_ack;
flags = le16toh(txs->flags);
if ((flags & AE_TXS_UPDATE) == 0)
break;
txs->flags = htole16(flags & ~AE_TXS_UPDATE);
/* Update stats. */
ae_update_stats_tx(flags, &sc->stats);
/*
* Update TxS position.
*/
sc->txs_ack = (sc->txs_ack + 1) % AE_TXS_COUNT_DEFAULT;
sc->flags |= AE_FLAG_TXAVAIL;
txd = (ae_txd_t *)(sc->txd_base + sc->txd_ack);
if (txs->len != txd->len)
device_printf(sc->dev, "Size mismatch: TxS:%d TxD:%d\n",
le16toh(txs->len), le16toh(txd->len));
/*
* Move txd ack and align on 4-byte boundary.
*/
sc->txd_ack = ((sc->txd_ack + le16toh(txd->len) + 4 + 3) & ~3) %
AE_TXD_BUFSIZE_DEFAULT;
if ((flags & AE_TXS_SUCCESS) != 0)
ifp->if_opackets++;
else
ifp->if_oerrors++;
sc->tx_inproc--;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
}
if (sc->tx_inproc < 0) {
if_printf(ifp, "Received stray Tx interrupt(s).\n");
sc->tx_inproc = 0;
}
if (sc->tx_inproc == 0)
sc->wd_timer = 0; /* Unarm watchdog. */
if ((sc->flags & AE_FLAG_TXAVAIL) != 0) {
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
ae_start_locked(ifp);
}
/*
* Syncronize DMA buffers.
*/
bus_dmamap_sync(sc->dma_txd_tag, sc->dma_txd_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(sc->dma_txs_tag, sc->dma_txs_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
}
static int
ae_rxeof(ae_softc_t *sc, ae_rxd_t *rxd)
{
struct ifnet *ifp;
struct mbuf *m;
unsigned int size;
uint16_t flags;
AE_LOCK_ASSERT(sc);
ifp = sc->ifp;
flags = le16toh(rxd->flags);
#ifdef AE_DEBUG
if_printf(ifp, "Rx interrupt occuried.\n");
#endif
size = le16toh(rxd->len) - ETHER_CRC_LEN;
if (size < (ETHER_MIN_LEN - ETHER_CRC_LEN - ETHER_VLAN_ENCAP_LEN)) {
if_printf(ifp, "Runt frame received.");
return (EIO);
}
m = m_devget(&rxd->data[0], size, ETHER_ALIGN, ifp, NULL);
if (m == NULL)
return (ENOBUFS);
if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0 &&
(flags & AE_RXD_HAS_VLAN) != 0) {
m->m_pkthdr.ether_vtag = AE_RXD_VLAN(le16toh(rxd->vlan));
m->m_flags |= M_VLANTAG;
}
/*
* Pass it through.
*/
AE_UNLOCK(sc);
(*ifp->if_input)(ifp, m);
AE_LOCK(sc);
return (0);
}
static void
ae_rx_intr(ae_softc_t *sc)
{
ae_rxd_t *rxd;
struct ifnet *ifp;
uint16_t flags;
int error;
KASSERT(sc != NULL, ("[ae, %d]: sc is NULL!", __LINE__));
AE_LOCK_ASSERT(sc);
ifp = sc->ifp;
/*
* Syncronize DMA buffers.
*/
bus_dmamap_sync(sc->dma_rxd_tag, sc->dma_rxd_map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
for (;;) {
rxd = (ae_rxd_t *)(sc->rxd_base + sc->rxd_cur);
flags = le16toh(rxd->flags);
if ((flags & AE_RXD_UPDATE) == 0)
break;
rxd->flags = htole16(flags & ~AE_RXD_UPDATE);
/* Update stats. */
ae_update_stats_rx(flags, &sc->stats);
/*
* Update position index.
*/
sc->rxd_cur = (sc->rxd_cur + 1) % AE_RXD_COUNT_DEFAULT;
if ((flags & AE_RXD_SUCCESS) == 0) {
ifp->if_ierrors++;
continue;
}
error = ae_rxeof(sc, rxd);
if (error != 0) {
ifp->if_ierrors++;
continue;
} else {
ifp->if_ipackets++;
}
}
/*
* Update Rx index.
*/
AE_WRITE_2(sc, AE_MB_RXD_IDX_REG, sc->rxd_cur);
}
static void
ae_watchdog(ae_softc_t *sc)
{
struct ifnet *ifp;
KASSERT(sc != NULL, ("[ae, %d]: sc is NULL!", __LINE__));
AE_LOCK_ASSERT(sc);
ifp = sc->ifp;
if (sc->wd_timer == 0 || --sc->wd_timer != 0)
return; /* Noting to do. */
if ((sc->flags & AE_FLAG_LINK) == 0)
if_printf(ifp, "watchdog timeout (missed link).\n");
else
if_printf(ifp, "watchdog timeout - resetting.\n");
ifp->if_oerrors++;
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
ae_init_locked(sc);
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
ae_start_locked(ifp);
}
static void
ae_tick(void *arg)
{
ae_softc_t *sc;
struct mii_data *mii;
sc = (ae_softc_t *)arg;
KASSERT(sc != NULL, ("[ae, %d]: sc is NULL!", __LINE__));
AE_LOCK_ASSERT(sc);
mii = device_get_softc(sc->miibus);
mii_tick(mii);
ae_watchdog(sc); /* Watchdog check. */
callout_reset(&sc->tick_ch, hz, ae_tick, sc);
}
static void
ae_rxvlan(ae_softc_t *sc)
{
struct ifnet *ifp;
uint32_t val;
AE_LOCK_ASSERT(sc);
ifp = sc->ifp;
val = AE_READ_4(sc, AE_MAC_REG);
val &= ~AE_MAC_RMVLAN_EN;
if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0)
val |= AE_MAC_RMVLAN_EN;
AE_WRITE_4(sc, AE_MAC_REG, val);
}
static void
ae_rxfilter(ae_softc_t *sc)
{
struct ifnet *ifp;
struct ifmultiaddr *ifma;
uint32_t crc;
uint32_t mchash[2];
uint32_t rxcfg;
KASSERT(sc != NULL, ("[ae, %d]: sc is NULL!", __LINE__));
AE_LOCK_ASSERT(sc);
ifp = sc->ifp;
rxcfg = AE_READ_4(sc, AE_MAC_REG);
rxcfg &= ~(AE_MAC_MCAST_EN | AE_MAC_BCAST_EN | AE_MAC_PROMISC_EN);
if ((ifp->if_flags & IFF_BROADCAST) != 0)
rxcfg |= AE_MAC_BCAST_EN;
if ((ifp->if_flags & IFF_PROMISC) != 0)
rxcfg |= AE_MAC_PROMISC_EN;
if ((ifp->if_flags & IFF_ALLMULTI) != 0)
rxcfg |= AE_MAC_MCAST_EN;
/*
* Wipe old settings.
*/
AE_WRITE_4(sc, AE_REG_MHT0, 0);
AE_WRITE_4(sc, AE_REG_MHT1, 0);
if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) {
AE_WRITE_4(sc, AE_REG_MHT0, 0xffffffff);
AE_WRITE_4(sc, AE_REG_MHT1, 0xffffffff);
AE_WRITE_4(sc, AE_MAC_REG, rxcfg);
return;
}
/*
* Load multicast tables.
*/
bzero(mchash, sizeof(mchash));
if_maddr_rlock(ifp);
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
crc = ether_crc32_be(LLADDR((struct sockaddr_dl *)
ifma->ifma_addr), ETHER_ADDR_LEN);
mchash[crc >> 31] |= 1 << ((crc >> 26) & 0x1f);
}
if_maddr_runlock(ifp);
AE_WRITE_4(sc, AE_REG_MHT0, mchash[0]);
AE_WRITE_4(sc, AE_REG_MHT1, mchash[1]);
AE_WRITE_4(sc, AE_MAC_REG, rxcfg);
}
static int
ae_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
struct ae_softc *sc;
struct ifreq *ifr;
struct mii_data *mii;
int error, mask;
sc = ifp->if_softc;
ifr = (struct ifreq *)data;
error = 0;
switch (cmd) {
case SIOCSIFMTU:
if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU)
error = EINVAL;
else if (ifp->if_mtu != ifr->ifr_mtu) {
AE_LOCK(sc);
ifp->if_mtu = ifr->ifr_mtu;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
ae_init_locked(sc);
}
AE_UNLOCK(sc);
}
break;
case SIOCSIFFLAGS:
AE_LOCK(sc);
if ((ifp->if_flags & IFF_UP) != 0) {
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
if (((ifp->if_flags ^ sc->if_flags)
& (IFF_PROMISC | IFF_ALLMULTI)) != 0)
ae_rxfilter(sc);
} else {
if ((sc->flags & AE_FLAG_DETACH) == 0)
ae_init_locked(sc);
}
} else {
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
ae_stop(sc);
}
sc->if_flags = ifp->if_flags;
AE_UNLOCK(sc);
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
AE_LOCK(sc);
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
ae_rxfilter(sc);
AE_UNLOCK(sc);
break;
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
mii = device_get_softc(sc->miibus);
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
break;
case SIOCSIFCAP:
AE_LOCK(sc);
mask = ifr->ifr_reqcap ^ ifp->if_capenable;
if ((mask & IFCAP_VLAN_HWTAGGING) != 0 &&
(ifp->if_capabilities & IFCAP_VLAN_HWTAGGING) != 0) {
ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
ae_rxvlan(sc);
}
VLAN_CAPABILITIES(ifp);
AE_UNLOCK(sc);
break;
default:
error = ether_ioctl(ifp, cmd, data);
break;
}
return (error);
}
static void
ae_stop(ae_softc_t *sc)
{
struct ifnet *ifp;
int i;
AE_LOCK_ASSERT(sc);
ifp = sc->ifp;
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
sc->flags &= ~AE_FLAG_LINK;
sc->wd_timer = 0; /* Cancel watchdog. */
callout_stop(&sc->tick_ch);
/*
* Clear and disable interrupts.
*/
AE_WRITE_4(sc, AE_IMR_REG, 0);
AE_WRITE_4(sc, AE_ISR_REG, 0xffffffff);
/*
* Stop Rx/Tx MACs.
*/
ae_stop_txmac(sc);
ae_stop_rxmac(sc);
/*
* Stop DMA engines.
*/
AE_WRITE_1(sc, AE_DMAREAD_REG, ~AE_DMAREAD_EN);
AE_WRITE_1(sc, AE_DMAWRITE_REG, ~AE_DMAWRITE_EN);
/*
* Wait for everything to enter idle state.
*/
for (i = 0; i < AE_IDLE_TIMEOUT; i++) {
if (AE_READ_4(sc, AE_IDLE_REG) == 0)
break;
DELAY(100);
}
if (i == AE_IDLE_TIMEOUT)
device_printf(sc->dev, "could not enter idle state in stop.\n");
}
static void
ae_update_stats_tx(uint16_t flags, ae_stats_t *stats)
{
if ((flags & AE_TXS_BCAST) != 0)
stats->tx_bcast++;
if ((flags & AE_TXS_MCAST) != 0)
stats->tx_mcast++;
if ((flags & AE_TXS_PAUSE) != 0)
stats->tx_pause++;
if ((flags & AE_TXS_CTRL) != 0)
stats->tx_ctrl++;
if ((flags & AE_TXS_DEFER) != 0)
stats->tx_defer++;
if ((flags & AE_TXS_EXCDEFER) != 0)
stats->tx_excdefer++;
if ((flags & AE_TXS_SINGLECOL) != 0)
stats->tx_singlecol++;
if ((flags & AE_TXS_MULTICOL) != 0)
stats->tx_multicol++;
if ((flags & AE_TXS_LATECOL) != 0)
stats->tx_latecol++;
if ((flags & AE_TXS_ABORTCOL) != 0)
stats->tx_abortcol++;
if ((flags & AE_TXS_UNDERRUN) != 0)
stats->tx_underrun++;
}
static void
ae_update_stats_rx(uint16_t flags, ae_stats_t *stats)
{
if ((flags & AE_RXD_BCAST) != 0)
stats->rx_bcast++;
if ((flags & AE_RXD_MCAST) != 0)
stats->rx_mcast++;
if ((flags & AE_RXD_PAUSE) != 0)
stats->rx_pause++;
if ((flags & AE_RXD_CTRL) != 0)
stats->rx_ctrl++;
if ((flags & AE_RXD_CRCERR) != 0)
stats->rx_crcerr++;
if ((flags & AE_RXD_CODEERR) != 0)
stats->rx_codeerr++;
if ((flags & AE_RXD_RUNT) != 0)
stats->rx_runt++;
if ((flags & AE_RXD_FRAG) != 0)
stats->rx_frag++;
if ((flags & AE_RXD_TRUNC) != 0)
stats->rx_trunc++;
if ((flags & AE_RXD_ALIGN) != 0)
stats->rx_align++;
}
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