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freebsd-skq/sys/dev/rt/if_rt.c
nwhitehorn 3e9a158ce7 More BUS_PROBE_NOWILDCARD sweeping. Some devices here (if_ath_ahb and siba) 
resist easy conversion since they implement a great deal of their attach
logic inside probe(). Some of this could be fixed by moving it to attach(),
but some requires something more subtle than BUS_PROBE_NOWILDCARD.
2013-10-29 14:19:42 +00:00

2610 lines
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/*-
* Copyright (c) 2011, Aleksandr Rybalko
* based on hard work
* by Alexander Egorenkov <egorenar@gmail.com>
* and by Damien Bergamini <damien.bergamini@free.fr>
* 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 unmodified, 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 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 AUTHOR 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "if_rtvar.h"
#include "if_rtreg.h"
#include <net/if.h>
#include <net/if_var.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 <net/bpf.h>
#include <machine/bus.h>
#include <machine/cache.h>
#include <machine/cpufunc.h>
#include <machine/resource.h>
#include <vm/vm_param.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/pmap.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <mips/rt305x/rt305x_sysctlvar.h>
#include <mips/rt305x/rt305xreg.h>
#ifdef IF_RT_PHY_SUPPORT
#include "miibus_if.h"
#endif
/*
* Defines and macros
*/
#define RT_MAX_AGG_SIZE 3840
#define RT_TX_DATA_SEG0_SIZE MJUMPAGESIZE
#define RT_MS(_v, _f) (((_v) & _f) >> _f##_S)
#define RT_SM(_v, _f) (((_v) << _f##_S) & _f)
#define RT_TX_WATCHDOG_TIMEOUT 5
/*
* Static function prototypes
*/
static int rt_probe(device_t dev);
static int rt_attach(device_t dev);
static int rt_detach(device_t dev);
static int rt_shutdown(device_t dev);
static int rt_suspend(device_t dev);
static int rt_resume(device_t dev);
static void rt_init_locked(void *priv);
static void rt_init(void *priv);
static void rt_stop_locked(void *priv);
static void rt_stop(void *priv);
static void rt_start(struct ifnet *ifp);
static int rt_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
static void rt_periodic(void *arg);
static void rt_tx_watchdog(void *arg);
static void rt_intr(void *arg);
static void rt_tx_coherent_intr(struct rt_softc *sc);
static void rt_rx_coherent_intr(struct rt_softc *sc);
static void rt_rx_delay_intr(struct rt_softc *sc);
static void rt_tx_delay_intr(struct rt_softc *sc);
static void rt_rx_intr(struct rt_softc *sc);
static void rt_tx_intr(struct rt_softc *sc, int qid);
static void rt_rx_done_task(void *context, int pending);
static void rt_tx_done_task(void *context, int pending);
static void rt_periodic_task(void *context, int pending);
static int rt_rx_eof(struct rt_softc *sc, int limit);
static void rt_tx_eof(struct rt_softc *sc,
struct rt_softc_tx_ring *ring);
static void rt_update_stats(struct rt_softc *sc);
static void rt_watchdog(struct rt_softc *sc);
static void rt_update_raw_counters(struct rt_softc *sc);
static void rt_intr_enable(struct rt_softc *sc, uint32_t intr_mask);
static void rt_intr_disable(struct rt_softc *sc, uint32_t intr_mask);
static int rt_txrx_enable(struct rt_softc *sc);
static int rt_alloc_rx_ring(struct rt_softc *sc,
struct rt_softc_rx_ring *ring);
static void rt_reset_rx_ring(struct rt_softc *sc,
struct rt_softc_rx_ring *ring);
static void rt_free_rx_ring(struct rt_softc *sc,
struct rt_softc_rx_ring *ring);
static int rt_alloc_tx_ring(struct rt_softc *sc,
struct rt_softc_tx_ring *ring, int qid);
static void rt_reset_tx_ring(struct rt_softc *sc,
struct rt_softc_tx_ring *ring);
static void rt_free_tx_ring(struct rt_softc *sc,
struct rt_softc_tx_ring *ring);
static void rt_dma_map_addr(void *arg, bus_dma_segment_t *segs,
int nseg, int error);
static void rt_sysctl_attach(struct rt_softc *sc);
#ifdef IF_RT_PHY_SUPPORT
void rt_miibus_statchg(device_t);
static int rt_miibus_readreg(device_t, int, int);
static int rt_miibus_writereg(device_t, int, int, int);
#endif
static int rt_ifmedia_upd(struct ifnet *);
static void rt_ifmedia_sts(struct ifnet *, struct ifmediareq *);
static SYSCTL_NODE(_hw, OID_AUTO, rt, CTLFLAG_RD, 0, "RT driver parameters");
#ifdef IF_RT_DEBUG
static int rt_debug = 0;
SYSCTL_INT(_hw_rt, OID_AUTO, debug, CTLFLAG_RW, &rt_debug, 0,
"RT debug level");
TUNABLE_INT("hw.rt.debug", &rt_debug);
#endif
static int
rt_probe(device_t dev)
{
device_set_desc(dev, "Ralink RT305XF onChip Ethernet MAC");
return (BUS_PROBE_NOWILDCARD);
}
/*
* macaddr_atoi - translate string MAC address to uint8_t array
*/
static int
macaddr_atoi(const char *str, uint8_t *mac)
{
int count, i;
unsigned int amac[ETHER_ADDR_LEN]; /* Aligned version */
count = sscanf(str, "%x%*c%x%*c%x%*c%x%*c%x%*c%x",
&amac[0], &amac[1], &amac[2],
&amac[3], &amac[4], &amac[5]);
if (count < ETHER_ADDR_LEN) {
memset(mac, 0, ETHER_ADDR_LEN);
return (1);
}
/* Copy aligned to result */
for (i = 0; i < ETHER_ADDR_LEN; i ++)
mac[i] = (amac[i] & 0xff);
return (0);
}
#ifdef USE_GENERATED_MAC_ADDRESS
static char *
kernenv_next(char *cp)
{
if (cp != NULL) {
while (*cp != 0)
cp++;
cp++;
if (*cp == 0)
cp = NULL;
}
return (cp);
}
/*
* generate_mac(uin8_t *mac)
* This is MAC address generator for cases when real device MAC address
* unknown or not yet accessible.
* Use 'b','s','d' signature and 3 octets from CRC32 on kenv.
* MAC = 'b', 's', 'd', CRC[3]^CRC[2], CRC[1], CRC[0]
*
* Output - MAC address, that do not change between reboots, if hints or
* bootloader info unchange.
*/
static void
generate_mac(uint8_t *mac)
{
unsigned char *cp;
int i = 0;
uint32_t crc = 0xffffffff;
/* Generate CRC32 on kenv */
if (dynamic_kenv) {
for (cp = kenvp[0]; cp != NULL; cp = kenvp[++i]) {
crc = calculate_crc32c(crc, cp, strlen(cp) + 1);
}
} else {
for (cp = kern_envp; cp != NULL; cp = kernenv_next(cp)) {
crc = calculate_crc32c(crc, cp, strlen(cp) + 1);
}
}
crc = ~crc;
mac[0] = 'b';
mac[1] = 's';
mac[2] = 'd';
mac[3] = (crc >> 24) ^ ((crc >> 16) & 0xff);
mac[4] = (crc >> 8) & 0xff;
mac[5] = crc & 0xff;
}
#endif
/*
* ether_request_mac - try to find usable MAC address.
*/
static int
ether_request_mac(device_t dev, uint8_t *mac)
{
char *var;
/*
* "ethaddr" is passed via envp on RedBoot platforms
* "kmac" is passed via argv on RouterBOOT platforms
*/
#if defined(__U_BOOT__) || defined(__REDBOOT__) || defined(__ROUTERBOOT__)
if ((var = getenv("ethaddr")) != NULL ||
(var = getenv("kmac")) != NULL ) {
if(!macaddr_atoi(var, mac)) {
printf("%s: use %s macaddr from KENV\n",
device_get_nameunit(dev), var);
freeenv(var);
return (0);
}
freeenv(var);
}
#endif
/*
* Try from hints
* hint.[dev].[unit].macaddr
*/
if (!resource_string_value(device_get_name(dev),
device_get_unit(dev), "macaddr", (const char **)&var)) {
if(!macaddr_atoi(var, mac)) {
printf("%s: use %s macaddr from hints\n",
device_get_nameunit(dev), var);
return (0);
}
}
#ifdef USE_GENERATED_MAC_ADDRESS
generate_mac(mac);
device_printf(dev, "use generated %02x:%02x:%02x:%02x:%02x:%02x "
"macaddr\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
#else
/* Hardcoded */
mac[0] = 0x00;
mac[1] = 0x18;
mac[2] = 0xe7;
mac[3] = 0xd5;
mac[4] = 0x83;
mac[5] = 0x90;
device_printf(dev, "use hardcoded 00:18:e7:d5:83:90 macaddr\n");
#endif
return (0);
}
static int
rt_attach(device_t dev)
{
struct rt_softc *sc;
struct ifnet *ifp;
int error, i;
sc = device_get_softc(dev);
sc->dev = dev;
mtx_init(&sc->lock, device_get_nameunit(dev), MTX_NETWORK_LOCK,
MTX_DEF | MTX_RECURSE);
sc->mem_rid = 0;
sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid,
RF_ACTIVE);
if (sc->mem == NULL) {
device_printf(dev, "could not allocate memory resource\n");
error = ENXIO;
goto fail;
}
sc->bst = rman_get_bustag(sc->mem);
sc->bsh = rman_get_bushandle(sc->mem);
sc->irq_rid = 0;
sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
RF_ACTIVE);
if (sc->irq == NULL) {
device_printf(dev,
"could not allocate interrupt resource\n");
error = ENXIO;
goto fail;
}
#ifdef IF_RT_DEBUG
sc->debug = rt_debug;
SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO,
"debug", CTLFLAG_RW, &sc->debug, 0, "rt debug level");
#endif
device_printf(dev, "RT305XF Ethernet MAC (rev 0x%08x)\n",
sc->mac_rev);
/* Reset hardware */
RT_WRITE(sc, GE_PORT_BASE + FE_RST_GLO, PSE_RESET);
RT_WRITE(sc, GDMA1_BASE + GDMA_FWD_CFG,
(
GDM_ICS_EN | /* Enable IP Csum */
GDM_TCS_EN | /* Enable TCP Csum */
GDM_UCS_EN | /* Enable UDP Csum */
GDM_STRPCRC | /* Strip CRC from packet */
GDM_DST_PORT_CPU << GDM_UFRC_P_SHIFT | /* Forward UCast to CPU */
GDM_DST_PORT_CPU << GDM_BFRC_P_SHIFT | /* Forward BCast to CPU */
GDM_DST_PORT_CPU << GDM_MFRC_P_SHIFT | /* Forward MCast to CPU */
GDM_DST_PORT_CPU << GDM_OFRC_P_SHIFT /* Forward Other to CPU */
));
/* allocate Tx and Rx rings */
for (i = 0; i < RT_SOFTC_TX_RING_COUNT; i++) {
error = rt_alloc_tx_ring(sc, &sc->tx_ring[i], i);
if (error != 0) {
device_printf(dev, "could not allocate Tx ring #%d\n",
i);
goto fail;
}
}
sc->tx_ring_mgtqid = 5;
error = rt_alloc_rx_ring(sc, &sc->rx_ring);
if (error != 0) {
device_printf(dev, "could not allocate Rx ring\n");
goto fail;
}
callout_init(&sc->periodic_ch, 0);
callout_init_mtx(&sc->tx_watchdog_ch, &sc->lock, 0);
ifp = sc->ifp = if_alloc(IFT_ETHER);
if (ifp == NULL) {
device_printf(dev, "could not if_alloc()\n");
error = ENOMEM;
goto fail;
}
ifp->if_softc = sc;
if_initname(ifp, device_get_name(sc->dev), device_get_unit(sc->dev));
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_init = rt_init;
ifp->if_ioctl = rt_ioctl;
ifp->if_start = rt_start;
#define RT_TX_QLEN 256
IFQ_SET_MAXLEN(&ifp->if_snd, RT_TX_QLEN);
ifp->if_snd.ifq_drv_maxlen = RT_TX_QLEN;
IFQ_SET_READY(&ifp->if_snd);
#ifdef IF_RT_PHY_SUPPORT
error = mii_attach(dev, &sc->rt_miibus, ifp, rt_ifmedia_upd,
rt_ifmedia_sts, BMSR_DEFCAPMASK, MII_PHY_ANY, MII_OFFSET_ANY, 0);
if (error != 0) {
device_printf(dev, "attaching PHYs failed\n");
error = ENXIO;
goto fail;
}
#else
ifmedia_init(&sc->rt_ifmedia, 0, rt_ifmedia_upd, rt_ifmedia_sts);
ifmedia_add(&sc->rt_ifmedia, IFM_ETHER | IFM_100_TX | IFM_FDX, 0,
NULL);
ifmedia_set(&sc->rt_ifmedia, IFM_ETHER | IFM_100_TX | IFM_FDX);
#endif /* IF_RT_PHY_SUPPORT */
ether_request_mac(dev, sc->mac_addr);
ether_ifattach(ifp, sc->mac_addr);
/*
* Tell the upper layer(s) we support long frames.
*/
ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
ifp->if_capabilities |= IFCAP_VLAN_MTU;
ifp->if_capenable |= IFCAP_VLAN_MTU;
ifp->if_capabilities |= IFCAP_RXCSUM|IFCAP_TXCSUM;
ifp->if_capenable |= IFCAP_RXCSUM|IFCAP_TXCSUM;
/* init task queue */
TASK_INIT(&sc->rx_done_task, 0, rt_rx_done_task, sc);
TASK_INIT(&sc->tx_done_task, 0, rt_tx_done_task, sc);
TASK_INIT(&sc->periodic_task, 0, rt_periodic_task, sc);
sc->rx_process_limit = 100;
sc->taskqueue = taskqueue_create("rt_taskq", M_NOWAIT,
taskqueue_thread_enqueue, &sc->taskqueue);
taskqueue_start_threads(&sc->taskqueue, 1, PI_NET, "%s taskq",
device_get_nameunit(sc->dev));
rt_sysctl_attach(sc);
/* set up interrupt */
error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE,
NULL, rt_intr, sc, &sc->irqh);
if (error != 0) {
printf("%s: could not set up interrupt\n",
device_get_nameunit(dev));
goto fail;
}
#ifdef IF_RT_DEBUG
device_printf(dev, "debug var at %#08x\n", (u_int)&(sc->debug));
#endif
return (0);
fail:
/* free Tx and Rx rings */
for (i = 0; i < RT_SOFTC_TX_RING_COUNT; i++)
rt_free_tx_ring(sc, &sc->tx_ring[i]);
rt_free_rx_ring(sc, &sc->rx_ring);
mtx_destroy(&sc->lock);
if (sc->mem != NULL)
bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid,
sc->mem);
if (sc->irq != NULL)
bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid,
sc->irq);
return (error);
}
/*
* Set media options.
*/
static int
rt_ifmedia_upd(struct ifnet *ifp)
{
struct rt_softc *sc;
#ifdef IF_RT_PHY_SUPPORT
struct mii_data *mii;
struct mii_softc *miisc;
int error = 0;
sc = ifp->if_softc;
RT_SOFTC_LOCK(sc);
mii = device_get_softc(sc->rt_miibus);
LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
PHY_RESET(miisc);
error = mii_mediachg(mii);
RT_SOFTC_UNLOCK(sc);
return (error);
#else /* !IF_RT_PHY_SUPPORT */
struct ifmedia *ifm;
struct ifmedia_entry *ife;
sc = ifp->if_softc;
ifm = &sc->rt_ifmedia;
ife = ifm->ifm_cur;
if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
return (EINVAL);
if (IFM_SUBTYPE(ife->ifm_media) == IFM_AUTO) {
device_printf(sc->dev,
"AUTO is not supported for multiphy MAC");
return (EINVAL);
}
/*
* Ignore everything
*/
return (0);
#endif /* IF_RT_PHY_SUPPORT */
}
/*
* Report current media status.
*/
static void
rt_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
{
#ifdef IF_RT_PHY_SUPPORT
struct rt_softc *sc;
struct mii_data *mii;
sc = ifp->if_softc;
RT_SOFTC_LOCK(sc);
mii = device_get_softc(sc->rt_miibus);
mii_pollstat(mii);
ifmr->ifm_active = mii->mii_media_active;
ifmr->ifm_status = mii->mii_media_status;
ifmr->ifm_active = IFM_ETHER | IFM_100_TX | IFM_FDX;
ifmr->ifm_status = IFM_AVALID | IFM_ACTIVE;
RT_SOFTC_UNLOCK(sc);
#else /* !IF_RT_PHY_SUPPORT */
ifmr->ifm_status = IFM_AVALID | IFM_ACTIVE;
ifmr->ifm_active = IFM_ETHER | IFM_100_TX | IFM_FDX;
#endif /* IF_RT_PHY_SUPPORT */
}
static int
rt_detach(device_t dev)
{
struct rt_softc *sc;
struct ifnet *ifp;
int i;
sc = device_get_softc(dev);
ifp = sc->ifp;
RT_DPRINTF(sc, RT_DEBUG_ANY, "detaching\n");
RT_SOFTC_LOCK(sc);
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
callout_stop(&sc->periodic_ch);
callout_stop(&sc->tx_watchdog_ch);
taskqueue_drain(sc->taskqueue, &sc->rx_done_task);
taskqueue_drain(sc->taskqueue, &sc->tx_done_task);
taskqueue_drain(sc->taskqueue, &sc->periodic_task);
/* free Tx and Rx rings */
for (i = 0; i < RT_SOFTC_TX_RING_COUNT; i++)
rt_free_tx_ring(sc, &sc->tx_ring[i]);
rt_free_rx_ring(sc, &sc->rx_ring);
RT_SOFTC_UNLOCK(sc);
#ifdef IF_RT_PHY_SUPPORT
if (sc->rt_miibus != NULL)
device_delete_child(dev, sc->rt_miibus);
#endif
ether_ifdetach(ifp);
if_free(ifp);
taskqueue_free(sc->taskqueue);
mtx_destroy(&sc->lock);
bus_generic_detach(dev);
bus_teardown_intr(dev, sc->irq, sc->irqh);
bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq);
bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem);
return (0);
}
static int
rt_shutdown(device_t dev)
{
struct rt_softc *sc;
sc = device_get_softc(dev);
RT_DPRINTF(sc, RT_DEBUG_ANY, "shutting down\n");
rt_stop(sc);
return (0);
}
static int
rt_suspend(device_t dev)
{
struct rt_softc *sc;
sc = device_get_softc(dev);
RT_DPRINTF(sc, RT_DEBUG_ANY, "suspending\n");
rt_stop(sc);
return (0);
}
static int
rt_resume(device_t dev)
{
struct rt_softc *sc;
struct ifnet *ifp;
sc = device_get_softc(dev);
ifp = sc->ifp;
RT_DPRINTF(sc, RT_DEBUG_ANY, "resuming\n");
if (ifp->if_flags & IFF_UP)
rt_init(sc);
return (0);
}
/*
* rt_init_locked - Run initialization process having locked mtx.
*/
static void
rt_init_locked(void *priv)
{
struct rt_softc *sc;
struct ifnet *ifp;
#ifdef IF_RT_PHY_SUPPORT
struct mii_data *mii;
#endif
int i, ntries;
uint32_t tmp;
sc = priv;
ifp = sc->ifp;
#ifdef IF_RT_PHY_SUPPORT
mii = device_get_softc(sc->rt_miibus);
#endif
RT_DPRINTF(sc, RT_DEBUG_ANY, "initializing\n");
RT_SOFTC_ASSERT_LOCKED(sc);
/* hardware reset */
RT_WRITE(sc, GE_PORT_BASE + FE_RST_GLO, PSE_RESET);
rt305x_sysctl_set(SYSCTL_RSTCTRL, SYSCTL_RSTCTRL_FRENG);
/* Fwd to CPU (uni|broad|multi)cast and Unknown */
RT_WRITE(sc, GDMA1_BASE + GDMA_FWD_CFG,
(
GDM_ICS_EN | /* Enable IP Csum */
GDM_TCS_EN | /* Enable TCP Csum */
GDM_UCS_EN | /* Enable UDP Csum */
GDM_STRPCRC | /* Strip CRC from packet */
GDM_DST_PORT_CPU << GDM_UFRC_P_SHIFT | /* Forward UCast to CPU */
GDM_DST_PORT_CPU << GDM_BFRC_P_SHIFT | /* Forward BCast to CPU */
GDM_DST_PORT_CPU << GDM_MFRC_P_SHIFT | /* Forward MCast to CPU */
GDM_DST_PORT_CPU << GDM_OFRC_P_SHIFT /* Forward Other to CPU */
));
/* disable DMA engine */
RT_WRITE(sc, PDMA_BASE + PDMA_GLO_CFG, 0);
RT_WRITE(sc, PDMA_BASE + PDMA_RST_IDX, 0xffffffff);
/* wait while DMA engine is busy */
for (ntries = 0; ntries < 100; ntries++) {
tmp = RT_READ(sc, PDMA_BASE + PDMA_GLO_CFG);
if (!(tmp & (FE_TX_DMA_BUSY | FE_RX_DMA_BUSY)))
break;
DELAY(1000);
}
if (ntries == 100) {
device_printf(sc->dev, "timeout waiting for DMA engine\n");
goto fail;
}
/* reset Rx and Tx rings */
tmp = FE_RST_DRX_IDX0 |
FE_RST_DTX_IDX3 |
FE_RST_DTX_IDX2 |
FE_RST_DTX_IDX1 |
FE_RST_DTX_IDX0;
RT_WRITE(sc, PDMA_BASE + PDMA_RST_IDX, tmp);
/* XXX switch set mac address */
for (i = 0; i < RT_SOFTC_TX_RING_COUNT; i++)
rt_reset_tx_ring(sc, &sc->tx_ring[i]);
for (i = 0; i < RT_SOFTC_TX_RING_COUNT; i++) {
/* update TX_BASE_PTRx */
RT_WRITE(sc, PDMA_BASE + TX_BASE_PTR(i),
sc->tx_ring[i].desc_phys_addr);
RT_WRITE(sc, PDMA_BASE + TX_MAX_CNT(i),
RT_SOFTC_TX_RING_DESC_COUNT);
RT_WRITE(sc, PDMA_BASE + TX_CTX_IDX(i), 0);
}
/* init Rx ring */
rt_reset_rx_ring(sc, &sc->rx_ring);
/* update RX_BASE_PTR0 */
RT_WRITE(sc, PDMA_BASE + RX_BASE_PTR0,
sc->rx_ring.desc_phys_addr);
RT_WRITE(sc, PDMA_BASE + RX_MAX_CNT0,
RT_SOFTC_RX_RING_DATA_COUNT);
RT_WRITE(sc, PDMA_BASE + RX_CALC_IDX0,
RT_SOFTC_RX_RING_DATA_COUNT - 1);
/* write back DDONE, 16byte burst enable RX/TX DMA */
RT_WRITE(sc, PDMA_BASE + PDMA_GLO_CFG,
FE_TX_WB_DDONE | FE_DMA_BT_SIZE16 | FE_RX_DMA_EN | FE_TX_DMA_EN);
/* disable interrupts mitigation */
RT_WRITE(sc, PDMA_BASE + DELAY_INT_CFG, 0);
/* clear pending interrupts */
RT_WRITE(sc, GE_PORT_BASE + FE_INT_STATUS, 0xffffffff);
/* enable interrupts */
tmp = CNT_PPE_AF |
CNT_GDM_AF |
PSE_P2_FC |
GDM_CRC_DROP |
PSE_BUF_DROP |
GDM_OTHER_DROP |
PSE_P1_FC |
PSE_P0_FC |
PSE_FQ_EMPTY |
INT_TX_COHERENT |
INT_RX_COHERENT |
INT_TXQ3_DONE |
INT_TXQ2_DONE |
INT_TXQ1_DONE |
INT_TXQ0_DONE |
INT_RX_DONE;
sc->intr_enable_mask = tmp;
RT_WRITE(sc, GE_PORT_BASE + FE_INT_ENABLE, tmp);
if (rt_txrx_enable(sc) != 0)
goto fail;
#ifdef IF_RT_PHY_SUPPORT
if (mii) mii_mediachg(mii);
#endif /* IF_RT_PHY_SUPPORT */
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
ifp->if_drv_flags |= IFF_DRV_RUNNING;
sc->periodic_round = 0;
callout_reset(&sc->periodic_ch, hz / 10, rt_periodic, sc);
return;
fail:
rt_stop_locked(sc);
}
/*
* rt_init - lock and initialize device.
*/
static void
rt_init(void *priv)
{
struct rt_softc *sc;
sc = priv;
RT_SOFTC_LOCK(sc);
rt_init_locked(sc);
RT_SOFTC_UNLOCK(sc);
}
/*
* rt_stop_locked - stop TX/RX w/ lock
*/
static void
rt_stop_locked(void *priv)
{
struct rt_softc *sc;
struct ifnet *ifp;
sc = priv;
ifp = sc->ifp;
RT_DPRINTF(sc, RT_DEBUG_ANY, "stopping\n");
RT_SOFTC_ASSERT_LOCKED(sc);
sc->tx_timer = 0;
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
callout_stop(&sc->periodic_ch);
callout_stop(&sc->tx_watchdog_ch);
RT_SOFTC_UNLOCK(sc);
taskqueue_block(sc->taskqueue);
/*
* Sometime rt_stop_locked called from isr and we get panic
* When found, I fix it
*/
#ifdef notyet
taskqueue_drain(sc->taskqueue, &sc->rx_done_task);
taskqueue_drain(sc->taskqueue, &sc->tx_done_task);
taskqueue_drain(sc->taskqueue, &sc->periodic_task);
#endif
RT_SOFTC_LOCK(sc);
/* disable interrupts */
RT_WRITE(sc, GE_PORT_BASE + FE_INT_ENABLE, 0);
/* reset adapter */
RT_WRITE(sc, GE_PORT_BASE + FE_RST_GLO, PSE_RESET);
RT_WRITE(sc, GDMA1_BASE + GDMA_FWD_CFG,
(
GDM_ICS_EN | /* Enable IP Csum */
GDM_TCS_EN | /* Enable TCP Csum */
GDM_UCS_EN | /* Enable UDP Csum */
GDM_STRPCRC | /* Strip CRC from packet */
GDM_DST_PORT_CPU << GDM_UFRC_P_SHIFT | /* Forward UCast to CPU */
GDM_DST_PORT_CPU << GDM_BFRC_P_SHIFT | /* Forward BCast to CPU */
GDM_DST_PORT_CPU << GDM_MFRC_P_SHIFT | /* Forward MCast to CPU */
GDM_DST_PORT_CPU << GDM_OFRC_P_SHIFT /* Forward Other to CPU */
));
}
static void
rt_stop(void *priv)
{
struct rt_softc *sc;
sc = priv;
RT_SOFTC_LOCK(sc);
rt_stop_locked(sc);
RT_SOFTC_UNLOCK(sc);
}
/*
* rt_tx_data - transmit packet.
*/
static int
rt_tx_data(struct rt_softc *sc, struct mbuf *m, int qid)
{
struct ifnet *ifp;
struct rt_softc_tx_ring *ring;
struct rt_softc_tx_data *data;
struct rt_txdesc *desc;
struct mbuf *m_d;
bus_dma_segment_t dma_seg[RT_SOFTC_MAX_SCATTER];
int error, ndmasegs, ndescs, i;
KASSERT(qid >= 0 && qid < RT_SOFTC_TX_RING_COUNT,
("%s: Tx data: invalid qid=%d\n",
device_get_nameunit(sc->dev), qid));
RT_SOFTC_TX_RING_ASSERT_LOCKED(&sc->tx_ring[qid]);
ifp = sc->ifp;
ring = &sc->tx_ring[qid];
desc = &ring->desc[ring->desc_cur];
data = &ring->data[ring->data_cur];
error = bus_dmamap_load_mbuf_sg(ring->data_dma_tag, data->dma_map, m,
dma_seg, &ndmasegs, 0);
if (error != 0) {
/* too many fragments, linearize */
RT_DPRINTF(sc, RT_DEBUG_TX,
"could not load mbuf DMA map, trying to linearize "
"mbuf: ndmasegs=%d, len=%d, error=%d\n",
ndmasegs, m->m_pkthdr.len, error);
m_d = m_collapse(m, M_NOWAIT, 16);
if (m_d == NULL) {
m_freem(m);
m = NULL;
return (ENOMEM);
}
m = m_d;
sc->tx_defrag_packets++;
error = bus_dmamap_load_mbuf_sg(ring->data_dma_tag,
data->dma_map, m, dma_seg, &ndmasegs, 0);
if (error != 0) {
device_printf(sc->dev, "could not load mbuf DMA map: "
"ndmasegs=%d, len=%d, error=%d\n",
ndmasegs, m->m_pkthdr.len, error);
m_freem(m);
return (error);
}
}
if (m->m_pkthdr.len == 0)
ndmasegs = 0;
/* determine how many Tx descs are required */
ndescs = 1 + ndmasegs / 2;
if ((ring->desc_queued + ndescs) >
(RT_SOFTC_TX_RING_DESC_COUNT - 2)) {
RT_DPRINTF(sc, RT_DEBUG_TX,
"there are not enough Tx descs\n");
sc->no_tx_desc_avail++;
bus_dmamap_unload(ring->data_dma_tag, data->dma_map);
m_freem(m);
return (EFBIG);
}
data->m = m;
/* set up Tx descs */
for (i = 0; i < ndmasegs; i += 2) {
/* Set destenation */
desc->dst = (TXDSCR_DST_PORT_GDMA1);
if ((ifp->if_capenable & IFCAP_TXCSUM) != 0)
desc->dst |= (TXDSCR_IP_CSUM_GEN|TXDSCR_UDP_CSUM_GEN|
TXDSCR_TCP_CSUM_GEN);
/* Set queue id */
desc->qn = qid;
/* No PPPoE */
desc->pppoe = 0;
/* No VLAN */
desc->vid = 0;
desc->sdp0 = htole32(dma_seg[i].ds_addr);
desc->sdl0 = htole16(dma_seg[i].ds_len |
( ((i+1) == ndmasegs )?RT_TXDESC_SDL0_LASTSEG:0 ));
if ((i+1) < ndmasegs) {
desc->sdp1 = htole32(dma_seg[i+1].ds_addr);
desc->sdl1 = htole16(dma_seg[i+1].ds_len |
( ((i+2) == ndmasegs )?RT_TXDESC_SDL1_LASTSEG:0 ));
} else {
desc->sdp1 = 0;
desc->sdl1 = 0;
}
if ((i+2) < ndmasegs) {
ring->desc_queued++;
ring->desc_cur = (ring->desc_cur + 1) %
RT_SOFTC_TX_RING_DESC_COUNT;
}
desc = &ring->desc[ring->desc_cur];
}
RT_DPRINTF(sc, RT_DEBUG_TX, "sending data: len=%d, ndmasegs=%d, "
"DMA ds_len=%d/%d/%d/%d/%d\n",
m->m_pkthdr.len, ndmasegs,
(int) dma_seg[0].ds_len,
(int) dma_seg[1].ds_len,
(int) dma_seg[2].ds_len,
(int) dma_seg[3].ds_len,
(int) dma_seg[4].ds_len);
bus_dmamap_sync(ring->seg0_dma_tag, ring->seg0_dma_map,
BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(ring->data_dma_tag, data->dma_map,
BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(ring->desc_dma_tag, ring->desc_dma_map,
BUS_DMASYNC_PREWRITE);
ring->desc_queued++;
ring->desc_cur = (ring->desc_cur + 1) % RT_SOFTC_TX_RING_DESC_COUNT;
ring->data_queued++;
ring->data_cur = (ring->data_cur + 1) % RT_SOFTC_TX_RING_DATA_COUNT;
/* kick Tx */
RT_WRITE(sc, PDMA_BASE + TX_CTX_IDX(qid), ring->desc_cur);
return (0);
}
/*
* rt_start - start Transmit/Receive
*/
static void
rt_start(struct ifnet *ifp)
{
struct rt_softc *sc;
struct mbuf *m;
int qid = 0 /* XXX must check QoS priority */;
sc = ifp->if_softc;
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
return;
for (;;) {
IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
if (m == NULL)
break;
m->m_pkthdr.rcvif = NULL;
RT_SOFTC_TX_RING_LOCK(&sc->tx_ring[qid]);
if (sc->tx_ring[qid].data_queued >=
RT_SOFTC_TX_RING_DATA_COUNT) {
RT_SOFTC_TX_RING_UNLOCK(&sc->tx_ring[qid]);
RT_DPRINTF(sc, RT_DEBUG_TX,
"if_start: Tx ring with qid=%d is full\n", qid);
m_freem(m);
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
ifp->if_oerrors++;
sc->tx_data_queue_full[qid]++;
break;
}
if (rt_tx_data(sc, m, qid) != 0) {
RT_SOFTC_TX_RING_UNLOCK(&sc->tx_ring[qid]);
ifp->if_oerrors++;
break;
}
RT_SOFTC_TX_RING_UNLOCK(&sc->tx_ring[qid]);
sc->tx_timer = RT_TX_WATCHDOG_TIMEOUT;
callout_reset(&sc->tx_watchdog_ch, hz, rt_tx_watchdog, sc);
}
}
/*
* rt_update_promisc - set/clear promiscuous mode. Unused yet, because
* filtering done by attached Ethernet switch.
*/
static void
rt_update_promisc(struct ifnet *ifp)
{
struct rt_softc *sc;
sc = ifp->if_softc;
printf("%s: %s promiscuous mode\n",
device_get_nameunit(sc->dev),
(ifp->if_flags & IFF_PROMISC) ? "entering" : "leaving");
}
/*
* rt_ioctl - ioctl handler.
*/
static int
rt_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
struct rt_softc *sc;
struct ifreq *ifr;
#ifdef IF_RT_PHY_SUPPORT
struct mii_data *mii;
#endif /* IF_RT_PHY_SUPPORT */
int error, startall;
sc = ifp->if_softc;
ifr = (struct ifreq *) data;
error = 0;
switch (cmd) {
case SIOCSIFFLAGS:
startall = 0;
RT_SOFTC_LOCK(sc);
if (ifp->if_flags & IFF_UP) {
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
if ((ifp->if_flags ^ sc->if_flags) &
IFF_PROMISC)
rt_update_promisc(ifp);
} else {
rt_init_locked(sc);
startall = 1;
}
} else {
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
rt_stop_locked(sc);
}
sc->if_flags = ifp->if_flags;
RT_SOFTC_UNLOCK(sc);
break;
case SIOCGIFMEDIA:
case SIOCSIFMEDIA:
#ifdef IF_RT_PHY_SUPPORT
mii = device_get_softc(sc->rt_miibus);
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
#else
error = ifmedia_ioctl(ifp, ifr, &sc->rt_ifmedia, cmd);
#endif /* IF_RT_PHY_SUPPORT */
break;
default:
error = ether_ioctl(ifp, cmd, data);
break;
}
return (error);
}
/*
* rt_periodic - Handler of PERIODIC interrupt
*/
static void
rt_periodic(void *arg)
{
struct rt_softc *sc;
sc = arg;
RT_DPRINTF(sc, RT_DEBUG_PERIODIC, "periodic\n");
taskqueue_enqueue(sc->taskqueue, &sc->periodic_task);
}
/*
* rt_tx_watchdog - Handler of TX Watchdog
*/
static void
rt_tx_watchdog(void *arg)
{
struct rt_softc *sc;
struct ifnet *ifp;
sc = arg;
ifp = sc->ifp;
if (sc->tx_timer == 0)
return;
if (--sc->tx_timer == 0) {
device_printf(sc->dev, "Tx watchdog timeout: resetting\n");
#ifdef notyet
/*
* XXX: Commented out, because reset break input.
*/
rt_stop_locked(sc);
rt_init_locked(sc);
#endif
ifp->if_oerrors++;
sc->tx_watchdog_timeouts++;
}
callout_reset(&sc->tx_watchdog_ch, hz, rt_tx_watchdog, sc);
}
/*
* rt_cnt_ppe_af - Handler of PPE Counter Table Almost Full interrupt
*/
static void
rt_cnt_ppe_af(struct rt_softc *sc)
{
RT_DPRINTF(sc, RT_DEBUG_INTR, "PPE Counter Table Almost Full\n");
}
/*
* rt_cnt_gdm_af - Handler of GDMA 1 & 2 Counter Table Almost Full interrupt
*/
static void
rt_cnt_gdm_af(struct rt_softc *sc)
{
RT_DPRINTF(sc, RT_DEBUG_INTR,
"GDMA 1 & 2 Counter Table Almost Full\n");
}
/*
* rt_pse_p2_fc - Handler of PSE port2 (GDMA 2) flow control interrupt
*/
static void
rt_pse_p2_fc(struct rt_softc *sc)
{
RT_DPRINTF(sc, RT_DEBUG_INTR,
"PSE port2 (GDMA 2) flow control asserted.\n");
}
/*
* rt_gdm_crc_drop - Handler of GDMA 1/2 discard a packet due to CRC error
* interrupt
*/
static void
rt_gdm_crc_drop(struct rt_softc *sc)
{
RT_DPRINTF(sc, RT_DEBUG_INTR,
"GDMA 1 & 2 discard a packet due to CRC error\n");
}
/*
* rt_pse_buf_drop - Handler of buffer sharing limitation interrupt
*/
static void
rt_pse_buf_drop(struct rt_softc *sc)
{
RT_DPRINTF(sc, RT_DEBUG_INTR,
"PSE discards a packet due to buffer sharing limitation\n");
}
/*
* rt_gdm_other_drop - Handler of discard on other reason interrupt
*/
static void
rt_gdm_other_drop(struct rt_softc *sc)
{
RT_DPRINTF(sc, RT_DEBUG_INTR,
"GDMA 1 & 2 discard a packet due to other reason\n");
}
/*
* rt_pse_p1_fc - Handler of PSE port1 (GDMA 1) flow control interrupt
*/
static void
rt_pse_p1_fc(struct rt_softc *sc)
{
RT_DPRINTF(sc, RT_DEBUG_INTR,
"PSE port1 (GDMA 1) flow control asserted.\n");
}
/*
* rt_pse_p0_fc - Handler of PSE port0 (CDMA) flow control interrupt
*/
static void
rt_pse_p0_fc(struct rt_softc *sc)
{
RT_DPRINTF(sc, RT_DEBUG_INTR,
"PSE port0 (CDMA) flow control asserted.\n");
}
/*
* rt_pse_fq_empty - Handler of PSE free Q empty threshold reached interrupt
*/
static void
rt_pse_fq_empty(struct rt_softc *sc)
{
RT_DPRINTF(sc, RT_DEBUG_INTR,
"PSE free Q empty threshold reached & forced drop "
"condition occurred.\n");
}
/*
* rt_intr - main ISR
*/
static void
rt_intr(void *arg)
{
struct rt_softc *sc;
struct ifnet *ifp;
uint32_t status;
sc = arg;
ifp = sc->ifp;
/* acknowledge interrupts */
status = RT_READ(sc, GE_PORT_BASE + FE_INT_STATUS);
RT_WRITE(sc, GE_PORT_BASE + FE_INT_STATUS, status);
RT_DPRINTF(sc, RT_DEBUG_INTR, "interrupt: status=0x%08x\n", status);
if (status == 0xffffffff || /* device likely went away */
status == 0) /* not for us */
return;
sc->interrupts++;
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
return;
if (status & CNT_PPE_AF)
rt_cnt_ppe_af(sc);
if (status & CNT_GDM_AF)
rt_cnt_gdm_af(sc);
if (status & PSE_P2_FC)
rt_pse_p2_fc(sc);
if (status & GDM_CRC_DROP)
rt_gdm_crc_drop(sc);
if (status & PSE_BUF_DROP)
rt_pse_buf_drop(sc);
if (status & GDM_OTHER_DROP)
rt_gdm_other_drop(sc);
if (status & PSE_P1_FC)
rt_pse_p1_fc(sc);
if (status & PSE_P0_FC)
rt_pse_p0_fc(sc);
if (status & PSE_FQ_EMPTY)
rt_pse_fq_empty(sc);
if (status & INT_TX_COHERENT)
rt_tx_coherent_intr(sc);
if (status & INT_RX_COHERENT)
rt_rx_coherent_intr(sc);
if (status & RX_DLY_INT)
rt_rx_delay_intr(sc);
if (status & TX_DLY_INT)
rt_tx_delay_intr(sc);
if (status & INT_RX_DONE)
rt_rx_intr(sc);
if (status & INT_TXQ3_DONE)
rt_tx_intr(sc, 3);
if (status & INT_TXQ2_DONE)
rt_tx_intr(sc, 2);
if (status & INT_TXQ1_DONE)
rt_tx_intr(sc, 1);
if (status & INT_TXQ0_DONE)
rt_tx_intr(sc, 0);
}
static void
rt_tx_coherent_intr(struct rt_softc *sc)
{
uint32_t tmp;
int i;
RT_DPRINTF(sc, RT_DEBUG_INTR, "Tx coherent interrupt\n");
sc->tx_coherent_interrupts++;
/* restart DMA engine */
tmp = RT_READ(sc, PDMA_BASE + PDMA_GLO_CFG);
tmp &= ~(FE_TX_WB_DDONE | FE_TX_DMA_EN);
RT_WRITE(sc, PDMA_BASE + PDMA_GLO_CFG, tmp);
for (i = 0; i < RT_SOFTC_TX_RING_COUNT; i++)
rt_reset_tx_ring(sc, &sc->tx_ring[i]);
for (i = 0; i < RT_SOFTC_TX_RING_COUNT; i++) {
RT_WRITE(sc, PDMA_BASE + TX_BASE_PTR(i),
sc->tx_ring[i].desc_phys_addr);
RT_WRITE(sc, PDMA_BASE + TX_MAX_CNT(i),
RT_SOFTC_TX_RING_DESC_COUNT);
RT_WRITE(sc, PDMA_BASE + TX_CTX_IDX(i), 0);
}
rt_txrx_enable(sc);
}
/*
* rt_rx_coherent_intr
*/
static void
rt_rx_coherent_intr(struct rt_softc *sc)
{
uint32_t tmp;
RT_DPRINTF(sc, RT_DEBUG_INTR, "Rx coherent interrupt\n");
sc->rx_coherent_interrupts++;
/* restart DMA engine */
tmp = RT_READ(sc, PDMA_BASE + PDMA_GLO_CFG);
tmp &= ~(FE_RX_DMA_EN);
RT_WRITE(sc, PDMA_BASE + PDMA_GLO_CFG, tmp);
/* init Rx ring */
rt_reset_rx_ring(sc, &sc->rx_ring);
RT_WRITE(sc, PDMA_BASE + RX_BASE_PTR0,
sc->rx_ring.desc_phys_addr);
RT_WRITE(sc, PDMA_BASE + RX_MAX_CNT0,
RT_SOFTC_RX_RING_DATA_COUNT);
RT_WRITE(sc, PDMA_BASE + RX_CALC_IDX0,
RT_SOFTC_RX_RING_DATA_COUNT - 1);
rt_txrx_enable(sc);
}
/*
* rt_rx_intr - a packet received
*/
static void
rt_rx_intr(struct rt_softc *sc)
{
RT_DPRINTF(sc, RT_DEBUG_INTR, "Rx interrupt\n");
sc->rx_interrupts++;
RT_SOFTC_LOCK(sc);
if (!(sc->intr_disable_mask & INT_RX_DONE)) {
rt_intr_disable(sc, INT_RX_DONE);
taskqueue_enqueue(sc->taskqueue, &sc->rx_done_task);
}
sc->intr_pending_mask |= INT_RX_DONE;
RT_SOFTC_UNLOCK(sc);
}
static void
rt_rx_delay_intr(struct rt_softc *sc)
{
RT_DPRINTF(sc, RT_DEBUG_INTR, "Rx delay interrupt\n");
sc->rx_delay_interrupts++;
}
static void
rt_tx_delay_intr(struct rt_softc *sc)
{
RT_DPRINTF(sc, RT_DEBUG_INTR, "Tx delay interrupt\n");
sc->tx_delay_interrupts++;
}
/*
* rt_tx_intr - Transsmition of packet done
*/
static void
rt_tx_intr(struct rt_softc *sc, int qid)
{
KASSERT(qid >= 0 && qid < RT_SOFTC_TX_RING_COUNT,
("%s: Tx interrupt: invalid qid=%d\n",
device_get_nameunit(sc->dev), qid));
RT_DPRINTF(sc, RT_DEBUG_INTR, "Tx interrupt: qid=%d\n", qid);
sc->tx_interrupts[qid]++;
RT_SOFTC_LOCK(sc);
if (!(sc->intr_disable_mask & (INT_TXQ0_DONE << qid))) {
rt_intr_disable(sc, (INT_TXQ0_DONE << qid));
taskqueue_enqueue(sc->taskqueue, &sc->tx_done_task);
}
sc->intr_pending_mask |= (INT_TXQ0_DONE << qid);
RT_SOFTC_UNLOCK(sc);
}
/*
* rt_rx_done_task - run RX task
*/
static void
rt_rx_done_task(void *context, int pending)
{
struct rt_softc *sc;
struct ifnet *ifp;
int again;
sc = context;
ifp = sc->ifp;
RT_DPRINTF(sc, RT_DEBUG_RX, "Rx done task\n");
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
return;
sc->intr_pending_mask &= ~INT_RX_DONE;
again = rt_rx_eof(sc, sc->rx_process_limit);
RT_SOFTC_LOCK(sc);
if ((sc->intr_pending_mask & INT_RX_DONE) || again) {
RT_DPRINTF(sc, RT_DEBUG_RX,
"Rx done task: scheduling again\n");
taskqueue_enqueue(sc->taskqueue, &sc->rx_done_task);
} else {
rt_intr_enable(sc, INT_RX_DONE);
}
RT_SOFTC_UNLOCK(sc);
}
/*
* rt_tx_done_task - check for pending TX task in all queues
*/
static void
rt_tx_done_task(void *context, int pending)
{
struct rt_softc *sc;
struct ifnet *ifp;
uint32_t intr_mask;
int i;
sc = context;
ifp = sc->ifp;
RT_DPRINTF(sc, RT_DEBUG_TX, "Tx done task\n");
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
return;
for (i = RT_SOFTC_TX_RING_COUNT - 1; i >= 0; i--) {
if (sc->intr_pending_mask & (INT_TXQ0_DONE << i)) {
sc->intr_pending_mask &= ~(INT_TXQ0_DONE << i);
rt_tx_eof(sc, &sc->tx_ring[i]);
}
}
sc->tx_timer = 0;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
intr_mask = (
INT_TXQ3_DONE |
INT_TXQ2_DONE |
INT_TXQ1_DONE |
INT_TXQ0_DONE);
RT_SOFTC_LOCK(sc);
rt_intr_enable(sc, ~sc->intr_pending_mask &
(sc->intr_disable_mask & intr_mask));
if (sc->intr_pending_mask & intr_mask) {
RT_DPRINTF(sc, RT_DEBUG_TX,
"Tx done task: scheduling again\n");
taskqueue_enqueue(sc->taskqueue, &sc->tx_done_task);
}
RT_SOFTC_UNLOCK(sc);
if (!IFQ_IS_EMPTY(&ifp->if_snd))
rt_start(ifp);
}
/*
* rt_periodic_task - run periodic task
*/
static void
rt_periodic_task(void *context, int pending)
{
struct rt_softc *sc;
struct ifnet *ifp;
sc = context;
ifp = sc->ifp;
RT_DPRINTF(sc, RT_DEBUG_PERIODIC, "periodic task: round=%lu\n",
sc->periodic_round);
if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
return;
RT_SOFTC_LOCK(sc);
sc->periodic_round++;
rt_update_stats(sc);
if ((sc->periodic_round % 10) == 0) {
rt_update_raw_counters(sc);
rt_watchdog(sc);
}
RT_SOFTC_UNLOCK(sc);
callout_reset(&sc->periodic_ch, hz / 10, rt_periodic, sc);
}
/*
* rt_rx_eof - check for frames that done by DMA engine and pass it into
* network subsystem.
*/
static int
rt_rx_eof(struct rt_softc *sc, int limit)
{
struct ifnet *ifp;
struct rt_softc_rx_ring *ring;
struct rt_rxdesc *desc;
struct rt_softc_rx_data *data;
struct mbuf *m, *mnew;
bus_dma_segment_t segs[1];
bus_dmamap_t dma_map;
uint32_t index, desc_flags;
int error, nsegs, len, nframes;
ifp = sc->ifp;
ring = &sc->rx_ring;
nframes = 0;
while (limit != 0) {
index = RT_READ(sc, PDMA_BASE + RX_DRX_IDX0);
if (ring->cur == index)
break;
desc = &ring->desc[ring->cur];
data = &ring->data[ring->cur];
bus_dmamap_sync(ring->desc_dma_tag, ring->desc_dma_map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
#ifdef IF_RT_DEBUG
if ( sc->debug & RT_DEBUG_RX ) {
printf("\nRX Descriptor[%#08x] dump:\n", (u_int)desc);
hexdump(desc, 16, 0, 0);
printf("-----------------------------------\n");
}
#endif
/* XXX Sometime device don`t set DDONE bit */
#ifdef DDONE_FIXED
if (!(desc->sdl0 & htole16(RT_RXDESC_SDL0_DDONE))) {
RT_DPRINTF(sc, RT_DEBUG_RX, "DDONE=0, try next\n");
break;
}
#endif
len = le16toh(desc->sdl0) & 0x3fff;
RT_DPRINTF(sc, RT_DEBUG_RX, "new frame len=%d\n", len);
nframes++;
mnew = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
MJUMPAGESIZE);
if (mnew == NULL) {
sc->rx_mbuf_alloc_errors++;
ifp->if_ierrors++;
goto skip;
}
mnew->m_len = mnew->m_pkthdr.len = MJUMPAGESIZE;
error = bus_dmamap_load_mbuf_sg(ring->data_dma_tag,
ring->spare_dma_map, mnew, segs, &nsegs, BUS_DMA_NOWAIT);
if (error != 0) {
RT_DPRINTF(sc, RT_DEBUG_RX,
"could not load Rx mbuf DMA map: "
"error=%d, nsegs=%d\n",
error, nsegs);
m_freem(mnew);
sc->rx_mbuf_dmamap_errors++;
ifp->if_ierrors++;
goto skip;
}
KASSERT(nsegs == 1, ("%s: too many DMA segments",
device_get_nameunit(sc->dev)));
bus_dmamap_sync(ring->data_dma_tag, data->dma_map,
BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(ring->data_dma_tag, data->dma_map);
dma_map = data->dma_map;
data->dma_map = ring->spare_dma_map;
ring->spare_dma_map = dma_map;
bus_dmamap_sync(ring->data_dma_tag, data->dma_map,
BUS_DMASYNC_PREREAD);
m = data->m;
desc_flags = desc->src;
data->m = mnew;
/* Add 2 for proper align of RX IP header */
desc->sdp0 = htole32(segs[0].ds_addr+2);
desc->sdl0 = htole32(segs[0].ds_len-2);
desc->src = 0;
desc->ai = 0;
desc->foe = 0;
RT_DPRINTF(sc, RT_DEBUG_RX,
"Rx frame: rxdesc flags=0x%08x\n", desc_flags);
m->m_pkthdr.rcvif = ifp;
/* Add 2 to fix data align, after sdp0 = addr + 2 */
m->m_data += 2;
m->m_pkthdr.len = m->m_len = len;
/* check for crc errors */
if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) {
/*check for valid checksum*/
if (desc_flags & (RXDSXR_SRC_IP_CSUM_FAIL|
RXDSXR_SRC_L4_CSUM_FAIL)) {
RT_DPRINTF(sc, RT_DEBUG_RX,
"rxdesc: crc error\n");
ifp->if_ierrors++;
if (!(ifp->if_flags & IFF_PROMISC)) {
m_freem(m);
goto skip;
}
}
if ((desc_flags & RXDSXR_SRC_IP_CSUM_FAIL) != 0) {
m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
m->m_pkthdr.csum_data = 0xffff;
}
m->m_flags &= ~M_HASFCS;
}
(*ifp->if_input)(ifp, m);
skip:
desc->sdl0 &= ~htole16(RT_RXDESC_SDL0_DDONE);
bus_dmamap_sync(ring->desc_dma_tag, ring->desc_dma_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
ring->cur = (ring->cur + 1) % RT_SOFTC_RX_RING_DATA_COUNT;
limit--;
}
if (ring->cur == 0)
RT_WRITE(sc, PDMA_BASE + RX_CALC_IDX0,
RT_SOFTC_RX_RING_DATA_COUNT - 1);
else
RT_WRITE(sc, PDMA_BASE + RX_CALC_IDX0,
ring->cur - 1);
RT_DPRINTF(sc, RT_DEBUG_RX, "Rx eof: nframes=%d\n", nframes);
sc->rx_packets += nframes;
return (limit == 0);
}
/*
* rt_tx_eof - check for successful transmitted frames and mark their
* descriptor as free.
*/
static void
rt_tx_eof(struct rt_softc *sc, struct rt_softc_tx_ring *ring)
{
struct ifnet *ifp;
struct rt_txdesc *desc;
struct rt_softc_tx_data *data;
uint32_t index;
int ndescs, nframes;
ifp = sc->ifp;
ndescs = 0;
nframes = 0;
for (;;) {
index = RT_READ(sc, PDMA_BASE + TX_DTX_IDX(ring->qid));
if (ring->desc_next == index)
break;
ndescs++;
desc = &ring->desc[ring->desc_next];
bus_dmamap_sync(ring->desc_dma_tag, ring->desc_dma_map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
if (desc->sdl0 & htole16(RT_TXDESC_SDL0_LASTSEG) ||
desc->sdl1 & htole16(RT_TXDESC_SDL1_LASTSEG)) {
nframes++;
data = &ring->data[ring->data_next];
bus_dmamap_sync(ring->data_dma_tag, data->dma_map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ring->data_dma_tag, data->dma_map);
m_freem(data->m);
data->m = NULL;
ifp->if_opackets++;
RT_SOFTC_TX_RING_LOCK(ring);
ring->data_queued--;
ring->data_next = (ring->data_next + 1) %
RT_SOFTC_TX_RING_DATA_COUNT;
RT_SOFTC_TX_RING_UNLOCK(ring);
}
desc->sdl0 &= ~htole16(RT_TXDESC_SDL0_DDONE);
bus_dmamap_sync(ring->desc_dma_tag, ring->desc_dma_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
RT_SOFTC_TX_RING_LOCK(ring);
ring->desc_queued--;
ring->desc_next = (ring->desc_next + 1) %
RT_SOFTC_TX_RING_DESC_COUNT;
RT_SOFTC_TX_RING_UNLOCK(ring);
}
RT_DPRINTF(sc, RT_DEBUG_TX,
"Tx eof: qid=%d, ndescs=%d, nframes=%d\n", ring->qid, ndescs,
nframes);
}
/*
* rt_update_stats - query statistics counters and update related variables.
*/
static void
rt_update_stats(struct rt_softc *sc)
{
struct ifnet *ifp;
ifp = sc->ifp;
RT_DPRINTF(sc, RT_DEBUG_STATS, "update statistic: \n");
/* XXX do update stats here */
}
/*
* rt_watchdog - reinit device on watchdog event.
*/
static void
rt_watchdog(struct rt_softc *sc)
{
uint32_t tmp;
#ifdef notyet
int ntries;
#endif
tmp = RT_READ(sc, PSE_BASE + CDMA_OQ_STA);
RT_DPRINTF(sc, RT_DEBUG_WATCHDOG, "watchdog: PSE_IQ_STA=0x%08x\n",
tmp);
/* XXX: do not reset */
#ifdef notyet
if (((tmp >> P0_IQ_PCNT_SHIFT) & 0xff) != 0) {
sc->tx_queue_not_empty[0]++;
for (ntries = 0; ntries < 10; ntries++) {
tmp = RT_READ(sc, PSE_BASE + PSE_IQ_STA);
if (((tmp >> P0_IQ_PCNT_SHIFT) & 0xff) == 0)
break;
DELAY(1);
}
}
if (((tmp >> P1_IQ_PCNT_SHIFT) & 0xff) != 0) {
sc->tx_queue_not_empty[1]++;
for (ntries = 0; ntries < 10; ntries++) {
tmp = RT_READ(sc, PSE_BASE + PSE_IQ_STA);
if (((tmp >> P1_IQ_PCNT_SHIFT) & 0xff) == 0)
break;
DELAY(1);
}
}
#endif
}
/*
* rt_update_raw_counters - update counters.
*/
static void
rt_update_raw_counters(struct rt_softc *sc)
{
sc->tx_bytes += RT_READ(sc, CNTR_BASE + GDMA_TX_GBCNT0);
sc->tx_packets += RT_READ(sc, CNTR_BASE + GDMA_TX_GPCNT0);
sc->tx_skip += RT_READ(sc, CNTR_BASE + GDMA_TX_SKIPCNT0);
sc->tx_collision+= RT_READ(sc, CNTR_BASE + GDMA_TX_COLCNT0);
sc->rx_bytes += RT_READ(sc, CNTR_BASE + GDMA_RX_GBCNT0);
sc->rx_packets += RT_READ(sc, CNTR_BASE + GDMA_RX_GPCNT0);
sc->rx_crc_err += RT_READ(sc, CNTR_BASE + GDMA_RX_CSUM_ERCNT0);
sc->rx_short_err+= RT_READ(sc, CNTR_BASE + GDMA_RX_SHORT_ERCNT0);
sc->rx_long_err += RT_READ(sc, CNTR_BASE + GDMA_RX_LONG_ERCNT0);
sc->rx_phy_err += RT_READ(sc, CNTR_BASE + GDMA_RX_FERCNT0);
sc->rx_fifo_overflows+= RT_READ(sc, CNTR_BASE + GDMA_RX_OERCNT0);
}
static void
rt_intr_enable(struct rt_softc *sc, uint32_t intr_mask)
{
uint32_t tmp;
sc->intr_disable_mask &= ~intr_mask;
tmp = sc->intr_enable_mask & ~sc->intr_disable_mask;
RT_WRITE(sc, GE_PORT_BASE + FE_INT_ENABLE, tmp);
}
static void
rt_intr_disable(struct rt_softc *sc, uint32_t intr_mask)
{
uint32_t tmp;
sc->intr_disable_mask |= intr_mask;
tmp = sc->intr_enable_mask & ~sc->intr_disable_mask;
RT_WRITE(sc, GE_PORT_BASE + FE_INT_ENABLE, tmp);
}
/*
* rt_txrx_enable - enable TX/RX DMA
*/
static int
rt_txrx_enable(struct rt_softc *sc)
{
struct ifnet *ifp;
uint32_t tmp;
int ntries;
ifp = sc->ifp;
/* enable Tx/Rx DMA engine */
for (ntries = 0; ntries < 200; ntries++) {
tmp = RT_READ(sc, PDMA_BASE + PDMA_GLO_CFG);
if (!(tmp & (FE_TX_DMA_BUSY | FE_RX_DMA_BUSY)))
break;
DELAY(1000);
}
if (ntries == 200) {
device_printf(sc->dev, "timeout waiting for DMA engine\n");
return (-1);
}
DELAY(50);
tmp |= FE_TX_WB_DDONE | FE_RX_DMA_EN | FE_TX_DMA_EN;
RT_WRITE(sc, PDMA_BASE + PDMA_GLO_CFG, tmp);
/* XXX set Rx filter */
return (0);
}
/*
* rt_alloc_rx_ring - allocate RX DMA ring buffer
*/
static int
rt_alloc_rx_ring(struct rt_softc *sc, struct rt_softc_rx_ring *ring)
{
struct rt_rxdesc *desc;
struct rt_softc_rx_data *data;
bus_dma_segment_t segs[1];
int i, nsegs, error;
error = bus_dma_tag_create(bus_get_dma_tag(sc->dev), PAGE_SIZE, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
RT_SOFTC_RX_RING_DATA_COUNT * sizeof(struct rt_rxdesc), 1,
RT_SOFTC_RX_RING_DATA_COUNT * sizeof(struct rt_rxdesc),
0, NULL, NULL, &ring->desc_dma_tag);
if (error != 0) {
device_printf(sc->dev,
"could not create Rx desc DMA tag\n");
goto fail;
}
error = bus_dmamem_alloc(ring->desc_dma_tag, (void **) &ring->desc,
BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_dma_map);
if (error != 0) {
device_printf(sc->dev,
"could not allocate Rx desc DMA memory\n");
goto fail;
}
error = bus_dmamap_load(ring->desc_dma_tag, ring->desc_dma_map,
ring->desc,
RT_SOFTC_RX_RING_DATA_COUNT * sizeof(struct rt_rxdesc),
rt_dma_map_addr, &ring->desc_phys_addr, 0);
if (error != 0) {
device_printf(sc->dev, "could not load Rx desc DMA map\n");
goto fail;
}
error = bus_dma_tag_create(bus_get_dma_tag(sc->dev), PAGE_SIZE, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
MJUMPAGESIZE, 1, MJUMPAGESIZE, 0, NULL, NULL,
&ring->data_dma_tag);
if (error != 0) {
device_printf(sc->dev,
"could not create Rx data DMA tag\n");
goto fail;
}
for (i = 0; i < RT_SOFTC_RX_RING_DATA_COUNT; i++) {
desc = &ring->desc[i];
data = &ring->data[i];
error = bus_dmamap_create(ring->data_dma_tag, 0,
&data->dma_map);
if (error != 0) {
device_printf(sc->dev, "could not create Rx data DMA "
"map\n");
goto fail;
}
data->m = m_getjcl(M_NOWAIT, MT_DATA, M_PKTHDR,
MJUMPAGESIZE);
if (data->m == NULL) {
device_printf(sc->dev, "could not allocate Rx mbuf\n");
error = ENOMEM;
goto fail;
}
data->m->m_len = data->m->m_pkthdr.len = MJUMPAGESIZE;
error = bus_dmamap_load_mbuf_sg(ring->data_dma_tag,
data->dma_map, data->m, segs, &nsegs, BUS_DMA_NOWAIT);
if (error != 0) {
device_printf(sc->dev,
"could not load Rx mbuf DMA map\n");
goto fail;
}
KASSERT(nsegs == 1, ("%s: too many DMA segments",
device_get_nameunit(sc->dev)));
/* Add 2 for proper align of RX IP header */
desc->sdp0 = htole32(segs[0].ds_addr+2);
desc->sdl0 = htole32(segs[0].ds_len-2);
}
error = bus_dmamap_create(ring->data_dma_tag, 0,
&ring->spare_dma_map);
if (error != 0) {
device_printf(sc->dev,
"could not create Rx spare DMA map\n");
goto fail;
}
bus_dmamap_sync(ring->desc_dma_tag, ring->desc_dma_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
return (0);
fail:
rt_free_rx_ring(sc, ring);
return (error);
}
/*
* rt_reset_rx_ring - reset RX ring buffer
*/
static void
rt_reset_rx_ring(struct rt_softc *sc, struct rt_softc_rx_ring *ring)
{
struct rt_rxdesc *desc;
int i;
for (i = 0; i < RT_SOFTC_RX_RING_DATA_COUNT; i++) {
desc = &ring->desc[i];
desc->sdl0 &= ~htole16(RT_RXDESC_SDL0_DDONE);
}
bus_dmamap_sync(ring->desc_dma_tag, ring->desc_dma_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
ring->cur = 0;
}
/*
* rt_free_rx_ring - free memory used by RX ring buffer
*/
static void
rt_free_rx_ring(struct rt_softc *sc, struct rt_softc_rx_ring *ring)
{
struct rt_softc_rx_data *data;
int i;
if (ring->desc != NULL) {
bus_dmamap_sync(ring->desc_dma_tag, ring->desc_dma_map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ring->desc_dma_tag, ring->desc_dma_map);
bus_dmamem_free(ring->desc_dma_tag, ring->desc,
ring->desc_dma_map);
}
if (ring->desc_dma_tag != NULL)
bus_dma_tag_destroy(ring->desc_dma_tag);
for (i = 0; i < RT_SOFTC_RX_RING_DATA_COUNT; i++) {
data = &ring->data[i];
if (data->m != NULL) {
bus_dmamap_sync(ring->data_dma_tag, data->dma_map,
BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(ring->data_dma_tag, data->dma_map);
m_freem(data->m);
}
if (data->dma_map != NULL)
bus_dmamap_destroy(ring->data_dma_tag, data->dma_map);
}
if (ring->spare_dma_map != NULL)
bus_dmamap_destroy(ring->data_dma_tag, ring->spare_dma_map);
if (ring->data_dma_tag != NULL)
bus_dma_tag_destroy(ring->data_dma_tag);
}
/*
* rt_alloc_tx_ring - allocate TX ring buffer
*/
static int
rt_alloc_tx_ring(struct rt_softc *sc, struct rt_softc_tx_ring *ring, int qid)
{
struct rt_softc_tx_data *data;
int error, i;
mtx_init(&ring->lock, device_get_nameunit(sc->dev), NULL, MTX_DEF);
error = bus_dma_tag_create(bus_get_dma_tag(sc->dev), PAGE_SIZE, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
RT_SOFTC_TX_RING_DESC_COUNT * sizeof(struct rt_txdesc), 1,
RT_SOFTC_TX_RING_DESC_COUNT * sizeof(struct rt_txdesc),
0, NULL, NULL, &ring->desc_dma_tag);
if (error != 0) {
device_printf(sc->dev,
"could not create Tx desc DMA tag\n");
goto fail;
}
error = bus_dmamem_alloc(ring->desc_dma_tag, (void **) &ring->desc,
BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_dma_map);
if (error != 0) {
device_printf(sc->dev,
"could not allocate Tx desc DMA memory\n");
goto fail;
}
error = bus_dmamap_load(ring->desc_dma_tag, ring->desc_dma_map,
ring->desc, (RT_SOFTC_TX_RING_DESC_COUNT *
sizeof(struct rt_txdesc)), rt_dma_map_addr,
&ring->desc_phys_addr, 0);
if (error != 0) {
device_printf(sc->dev, "could not load Tx desc DMA map\n");
goto fail;
}
ring->desc_queued = 0;
ring->desc_cur = 0;
ring->desc_next = 0;
error = bus_dma_tag_create(bus_get_dma_tag(sc->dev), PAGE_SIZE, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
RT_SOFTC_TX_RING_DATA_COUNT * RT_TX_DATA_SEG0_SIZE, 1,
RT_SOFTC_TX_RING_DATA_COUNT * RT_TX_DATA_SEG0_SIZE,
0, NULL, NULL, &ring->seg0_dma_tag);
if (error != 0) {
device_printf(sc->dev,
"could not create Tx seg0 DMA tag\n");
goto fail;
}
error = bus_dmamem_alloc(ring->seg0_dma_tag, (void **) &ring->seg0,
BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->seg0_dma_map);
if (error != 0) {
device_printf(sc->dev,
"could not allocate Tx seg0 DMA memory\n");
goto fail;
}
error = bus_dmamap_load(ring->seg0_dma_tag, ring->seg0_dma_map,
ring->seg0,
RT_SOFTC_TX_RING_DATA_COUNT * RT_TX_DATA_SEG0_SIZE,
rt_dma_map_addr, &ring->seg0_phys_addr, 0);
if (error != 0) {
device_printf(sc->dev, "could not load Tx seg0 DMA map\n");
goto fail;
}
error = bus_dma_tag_create(bus_get_dma_tag(sc->dev), PAGE_SIZE, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
MJUMPAGESIZE, RT_SOFTC_MAX_SCATTER, MJUMPAGESIZE, 0, NULL, NULL,
&ring->data_dma_tag);
if (error != 0) {
device_printf(sc->dev,
"could not create Tx data DMA tag\n");
goto fail;
}
for (i = 0; i < RT_SOFTC_TX_RING_DATA_COUNT; i++) {
data = &ring->data[i];
error = bus_dmamap_create(ring->data_dma_tag, 0,
&data->dma_map);
if (error != 0) {
device_printf(sc->dev, "could not create Tx data DMA "
"map\n");
goto fail;
}
}
ring->data_queued = 0;
ring->data_cur = 0;
ring->data_next = 0;
ring->qid = qid;
return (0);
fail:
rt_free_tx_ring(sc, ring);
return (error);
}
/*
* rt_reset_tx_ring - reset TX ring buffer to empty state
*/
static void
rt_reset_tx_ring(struct rt_softc *sc, struct rt_softc_tx_ring *ring)
{
struct rt_softc_tx_data *data;
struct rt_txdesc *desc;
int i;
for (i = 0; i < RT_SOFTC_TX_RING_DESC_COUNT; i++) {
desc = &ring->desc[i];
desc->sdl0 = 0;
desc->sdl1 = 0;
}
ring->desc_queued = 0;
ring->desc_cur = 0;
ring->desc_next = 0;
bus_dmamap_sync(ring->desc_dma_tag, ring->desc_dma_map,
BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(ring->seg0_dma_tag, ring->seg0_dma_map,
BUS_DMASYNC_PREWRITE);
for (i = 0; i < RT_SOFTC_TX_RING_DATA_COUNT; i++) {
data = &ring->data[i];
if (data->m != NULL) {
bus_dmamap_sync(ring->data_dma_tag, data->dma_map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ring->data_dma_tag, data->dma_map);
m_freem(data->m);
data->m = NULL;
}
}
ring->data_queued = 0;
ring->data_cur = 0;
ring->data_next = 0;
}
/*
* rt_free_tx_ring - free RX ring buffer
*/
static void
rt_free_tx_ring(struct rt_softc *sc, struct rt_softc_tx_ring *ring)
{
struct rt_softc_tx_data *data;
int i;
if (ring->desc != NULL) {
bus_dmamap_sync(ring->desc_dma_tag, ring->desc_dma_map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ring->desc_dma_tag, ring->desc_dma_map);
bus_dmamem_free(ring->desc_dma_tag, ring->desc,
ring->desc_dma_map);
}
if (ring->desc_dma_tag != NULL)
bus_dma_tag_destroy(ring->desc_dma_tag);
if (ring->seg0 != NULL) {
bus_dmamap_sync(ring->seg0_dma_tag, ring->seg0_dma_map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ring->seg0_dma_tag, ring->seg0_dma_map);
bus_dmamem_free(ring->seg0_dma_tag, ring->seg0,
ring->seg0_dma_map);
}
if (ring->seg0_dma_tag != NULL)
bus_dma_tag_destroy(ring->seg0_dma_tag);
for (i = 0; i < RT_SOFTC_TX_RING_DATA_COUNT; i++) {
data = &ring->data[i];
if (data->m != NULL) {
bus_dmamap_sync(ring->data_dma_tag, data->dma_map,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ring->data_dma_tag, data->dma_map);
m_freem(data->m);
}
if (data->dma_map != NULL)
bus_dmamap_destroy(ring->data_dma_tag, data->dma_map);
}
if (ring->data_dma_tag != NULL)
bus_dma_tag_destroy(ring->data_dma_tag);
mtx_destroy(&ring->lock);
}
/*
* rt_dma_map_addr - get address of busdma segment
*/
static void
rt_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error)
{
if (error != 0)
return;
KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
*(bus_addr_t *) arg = segs[0].ds_addr;
}
/*
* rt_sysctl_attach - attach sysctl nodes for NIC counters.
*/
static void
rt_sysctl_attach(struct rt_softc *sc)
{
struct sysctl_ctx_list *ctx;
struct sysctl_oid *tree;
struct sysctl_oid *stats;
ctx = device_get_sysctl_ctx(sc->dev);
tree = device_get_sysctl_tree(sc->dev);
/* statistic counters */
stats = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
"stats", CTLFLAG_RD, 0, "statistic");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"interrupts", CTLFLAG_RD, &sc->interrupts, 0,
"all interrupts");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"tx_coherent_interrupts", CTLFLAG_RD, &sc->tx_coherent_interrupts,
0, "Tx coherent interrupts");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"rx_coherent_interrupts", CTLFLAG_RD, &sc->rx_coherent_interrupts,
0, "Rx coherent interrupts");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"rx_interrupts", CTLFLAG_RD, &sc->rx_interrupts, 0,
"Rx interrupts");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"rx_delay_interrupts", CTLFLAG_RD, &sc->rx_delay_interrupts, 0,
"Rx delay interrupts");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ3_interrupts", CTLFLAG_RD, &sc->tx_interrupts[3], 0,
"Tx AC3 interrupts");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ2_interrupts", CTLFLAG_RD, &sc->tx_interrupts[2], 0,
"Tx AC2 interrupts");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ1_interrupts", CTLFLAG_RD, &sc->tx_interrupts[1], 0,
"Tx AC1 interrupts");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ0_interrupts", CTLFLAG_RD, &sc->tx_interrupts[0], 0,
"Tx AC0 interrupts");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"tx_delay_interrupts", CTLFLAG_RD, &sc->tx_delay_interrupts,
0, "Tx delay interrupts");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ3_desc_queued", CTLFLAG_RD, &sc->tx_ring[3].desc_queued,
0, "Tx AC3 descriptors queued");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ3_data_queued", CTLFLAG_RD, &sc->tx_ring[3].data_queued,
0, "Tx AC3 data queued");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ2_desc_queued", CTLFLAG_RD, &sc->tx_ring[2].desc_queued,
0, "Tx AC2 descriptors queued");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ2_data_queued", CTLFLAG_RD, &sc->tx_ring[2].data_queued,
0, "Tx AC2 data queued");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ1_desc_queued", CTLFLAG_RD, &sc->tx_ring[1].desc_queued,
0, "Tx AC1 descriptors queued");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ1_data_queued", CTLFLAG_RD, &sc->tx_ring[1].data_queued,
0, "Tx AC1 data queued");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ0_desc_queued", CTLFLAG_RD, &sc->tx_ring[0].desc_queued,
0, "Tx AC0 descriptors queued");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ0_data_queued", CTLFLAG_RD, &sc->tx_ring[0].data_queued,
0, "Tx AC0 data queued");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ3_data_queue_full", CTLFLAG_RD, &sc->tx_data_queue_full[3],
0, "Tx AC3 data queue full");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ2_data_queue_full", CTLFLAG_RD, &sc->tx_data_queue_full[2],
0, "Tx AC2 data queue full");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ1_data_queue_full", CTLFLAG_RD, &sc->tx_data_queue_full[1],
0, "Tx AC1 data queue full");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"TXQ0_data_queue_full", CTLFLAG_RD, &sc->tx_data_queue_full[0],
0, "Tx AC0 data queue full");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"tx_watchdog_timeouts", CTLFLAG_RD, &sc->tx_watchdog_timeouts,
0, "Tx watchdog timeouts");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"tx_defrag_packets", CTLFLAG_RD, &sc->tx_defrag_packets, 0,
"Tx defragmented packets");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"no_tx_desc_avail", CTLFLAG_RD, &sc->no_tx_desc_avail, 0,
"no Tx descriptors available");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"rx_mbuf_alloc_errors", CTLFLAG_RD, &sc->rx_mbuf_alloc_errors,
0, "Rx mbuf allocation errors");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"rx_mbuf_dmamap_errors", CTLFLAG_RD, &sc->rx_mbuf_dmamap_errors,
0, "Rx mbuf DMA mapping errors");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"tx_queue_0_not_empty", CTLFLAG_RD, &sc->tx_queue_not_empty[0],
0, "Tx queue 0 not empty");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"tx_queue_1_not_empty", CTLFLAG_RD, &sc->tx_queue_not_empty[1],
0, "Tx queue 1 not empty");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"rx_packets", CTLFLAG_RD, &sc->rx_packets, 0,
"Rx packets");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"rx_crc_errors", CTLFLAG_RD, &sc->rx_crc_err, 0,
"Rx CRC errors");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"rx_phy_errors", CTLFLAG_RD, &sc->rx_phy_err, 0,
"Rx PHY errors");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"rx_dup_packets", CTLFLAG_RD, &sc->rx_dup_packets, 0,
"Rx duplicate packets");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"rx_fifo_overflows", CTLFLAG_RD, &sc->rx_fifo_overflows, 0,
"Rx FIFO overflows");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"rx_bytes", CTLFLAG_RD, &sc->rx_bytes, 0,
"Rx bytes");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"rx_long_err", CTLFLAG_RD, &sc->rx_long_err, 0,
"Rx too long frame errors");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"rx_short_err", CTLFLAG_RD, &sc->rx_short_err, 0,
"Rx too short frame errors");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"tx_bytes", CTLFLAG_RD, &sc->tx_bytes, 0,
"Tx bytes");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"tx_packets", CTLFLAG_RD, &sc->tx_packets, 0,
"Tx packets");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"tx_skip", CTLFLAG_RD, &sc->tx_skip, 0,
"Tx skip count for GDMA ports");
SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(stats), OID_AUTO,
"tx_collision", CTLFLAG_RD, &sc->tx_collision, 0,
"Tx collision count for GDMA ports");
}
#ifdef IF_RT_PHY_SUPPORT
static int
rt_miibus_readreg(device_t dev, int phy, int reg)
{
struct rt_softc *sc = device_get_softc(dev);
/*
* PSEUDO_PHYAD is a special value for indicate switch attached.
* No one PHY use PSEUDO_PHYAD (0x1e) address.
*/
if (phy == 31) {
/* Fake PHY ID for bfeswitch attach */
switch (reg) {
case MII_BMSR:
return (BMSR_EXTSTAT|BMSR_MEDIAMASK);
case MII_PHYIDR1:
return (0x40); /* As result of faking */
case MII_PHYIDR2: /* PHY will detect as */
return (0x6250); /* bfeswitch */
}
}
/* Wait prev command done if any */
while (RT_READ(sc, MDIO_ACCESS) & MDIO_CMD_ONGO);
RT_WRITE(sc, MDIO_ACCESS,
MDIO_CMD_ONGO ||
((phy << MDIO_PHY_ADDR_SHIFT) & MDIO_PHY_ADDR_MASK) ||
((reg << MDIO_PHYREG_ADDR_SHIFT) & MDIO_PHYREG_ADDR_MASK));
while (RT_READ(sc, MDIO_ACCESS) & MDIO_CMD_ONGO);
return (RT_READ(sc, MDIO_ACCESS) & MDIO_PHY_DATA_MASK);
}
static int
rt_miibus_writereg(device_t dev, int phy, int reg, int val)
{
struct rt_softc *sc = device_get_softc(dev);
/* Wait prev command done if any */
while (RT_READ(sc, MDIO_ACCESS) & MDIO_CMD_ONGO);
RT_WRITE(sc, MDIO_ACCESS,
MDIO_CMD_ONGO || MDIO_CMD_WR ||
((phy << MDIO_PHY_ADDR_SHIFT) & MDIO_PHY_ADDR_MASK) ||
((reg << MDIO_PHYREG_ADDR_SHIFT) & MDIO_PHYREG_ADDR_MASK) ||
(val & MDIO_PHY_DATA_MASK));
while (RT_READ(sc, MDIO_ACCESS) & MDIO_CMD_ONGO);
return (0);
}
void
rt_miibus_statchg(device_t dev)
{
struct rt_softc *sc = device_get_softc(dev);
struct mii_data *mii;
mii = device_get_softc(sc->rt_miibus);
if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
(IFM_ACTIVE | IFM_AVALID)) {
switch (IFM_SUBTYPE(mii->mii_media_active)) {
case IFM_10_T:
case IFM_100_TX:
/* XXX check link here */
sc->flags |= 1;
break;
default:
break;
}
}
}
#endif /* IF_RT_PHY_SUPPORT */
static device_method_t rt_dev_methods[] =
{
DEVMETHOD(device_probe, rt_probe),
DEVMETHOD(device_attach, rt_attach),
DEVMETHOD(device_detach, rt_detach),
DEVMETHOD(device_shutdown, rt_shutdown),
DEVMETHOD(device_suspend, rt_suspend),
DEVMETHOD(device_resume, rt_resume),
#ifdef IF_RT_PHY_SUPPORT
/* MII interface */
DEVMETHOD(miibus_readreg, rt_miibus_readreg),
DEVMETHOD(miibus_writereg, rt_miibus_writereg),
DEVMETHOD(miibus_statchg, rt_miibus_statchg),
#endif
DEVMETHOD_END
};
static driver_t rt_driver =
{
"rt",
rt_dev_methods,
sizeof(struct rt_softc)
};
static devclass_t rt_dev_class;
DRIVER_MODULE(rt, nexus, rt_driver, rt_dev_class, 0, 0);
MODULE_DEPEND(rt, ether, 1, 1, 1);
MODULE_DEPEND(rt, miibus, 1, 1, 1);
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