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freebsd-skq/sys/arm/cavium/cns11xx/if_ece.c

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/*-
* Copyright (c) 2009 Yohanes Nugroho <yohanes@gmail.com>
* 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 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 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 <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/rman.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/taskqueue.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <net/if_var.h>
#include <net/if_vlan_var.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#endif
#include <net/bpf.h>
#include <net/bpfdesc.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <arm/cavium/cns11xx/if_ecereg.h>
#include <arm/cavium/cns11xx/if_ecevar.h>
#include <arm/cavium/cns11xx/econa_var.h>
#include <machine/bus.h>
#include <machine/intr.h>
/* "device miibus" required. See GENERIC if you get errors here. */
#include "miibus_if.h"
static uint8_t
vlan0_mac[ETHER_ADDR_LEN] = {0x00, 0xaa, 0xbb, 0xcc, 0xdd, 0x19};
/*
* Boot loader expects the hardware state to be the same when we
* restart the device (warm boot), so we need to save the initial
* config values.
*/
int initial_switch_config;
int initial_cpu_config;
int initial_port0_config;
int initial_port1_config;
static inline uint32_t
read_4(struct ece_softc *sc, bus_size_t off)
{
return (bus_read_4(sc->mem_res, off));
}
static inline void
write_4(struct ece_softc *sc, bus_size_t off, uint32_t val)
{
bus_write_4(sc->mem_res, off, val);
}
#define ECE_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
#define ECE_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
#define ECE_LOCK_INIT(_sc) \
mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->dev), \
MTX_NETWORK_LOCK, MTX_DEF)
#define ECE_TXLOCK(_sc) mtx_lock(&(_sc)->sc_mtx_tx)
#define ECE_TXUNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx_tx)
#define ECE_TXLOCK_INIT(_sc) \
mtx_init(&_sc->sc_mtx_tx, device_get_nameunit(_sc->dev), \
"ECE TX Lock", MTX_DEF)
#define ECE_CLEANUPLOCK(_sc) mtx_lock(&(_sc)->sc_mtx_cleanup)
#define ECE_CLEANUPUNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx_cleanup)
#define ECE_CLEANUPLOCK_INIT(_sc) \
mtx_init(&_sc->sc_mtx_cleanup, device_get_nameunit(_sc->dev), \
"ECE cleanup Lock", MTX_DEF)
#define ECE_RXLOCK(_sc) mtx_lock(&(_sc)->sc_mtx_rx)
#define ECE_RXUNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx_rx)
#define ECE_RXLOCK_INIT(_sc) \
mtx_init(&_sc->sc_mtx_rx, device_get_nameunit(_sc->dev), \
"ECE RX Lock", MTX_DEF)
#define ECE_LOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx);
#define ECE_TXLOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx_tx);
#define ECE_RXLOCK_DESTROY(_sc) mtx_destroy(&_sc->sc_mtx_rx);
#define ECE_CLEANUPLOCK_DESTROY(_sc) \
mtx_destroy(&_sc->sc_mtx_cleanup);
#define ECE_ASSERT_LOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_OWNED);
#define ECE_ASSERT_UNLOCKED(_sc) mtx_assert(&_sc->sc_mtx, MA_NOTOWNED);
static devclass_t ece_devclass;
/* ifnet entry points */
static void eceinit_locked(void *);
static void ecestart_locked(struct ifnet *);
static void eceinit(void *);
static void ecestart(struct ifnet *);
static void ecestop(struct ece_softc *);
static int eceioctl(struct ifnet * ifp, u_long, caddr_t);
/* bus entry points */
static int ece_probe(device_t dev);
static int ece_attach(device_t dev);
static int ece_detach(device_t dev);
static void ece_intr(void *);
static void ece_intr_qf(void *);
static void ece_intr_status(void *xsc);
/* helper routines */
static int ece_activate(device_t dev);
static void ece_deactivate(device_t dev);
static int ece_ifmedia_upd(struct ifnet *ifp);
static void ece_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr);
static int ece_get_mac(struct ece_softc *sc, u_char *eaddr);
static void ece_set_mac(struct ece_softc *sc, u_char *eaddr);
static int configure_cpu_port(struct ece_softc *sc);
static int configure_lan_port(struct ece_softc *sc, int phy_type);
static void set_pvid(struct ece_softc *sc, int port0, int port1, int cpu);
static void set_vlan_vid(struct ece_softc *sc, int vlan);
static void set_vlan_member(struct ece_softc *sc, int vlan);
static void set_vlan_tag(struct ece_softc *sc, int vlan);
static int hardware_init(struct ece_softc *sc);
static void ece_intr_rx_locked(struct ece_softc *sc, int count);
static void ece_free_desc_dma_tx(struct ece_softc *sc);
static void ece_free_desc_dma_rx(struct ece_softc *sc);
static void ece_intr_task(void *arg, int pending __unused);
static void ece_tx_task(void *arg, int pending __unused);
static void ece_cleanup_task(void *arg, int pending __unused);
static int ece_allocate_dma(struct ece_softc *sc);
static void ece_intr_tx(void *xsc);
static void clear_mac_entries(struct ece_softc *ec, int include_this_mac);
static uint32_t read_mac_entry(struct ece_softc *ec,
uint8_t *mac_result,
int first);
/*PHY related functions*/
static inline int
phy_read(struct ece_softc *sc, int phy, int reg)
{
int val;
int ii;
int status;
write_4(sc, PHY_CONTROL, PHY_RW_OK);
write_4(sc, PHY_CONTROL,
(PHY_ADDRESS(phy)|PHY_READ_COMMAND |
PHY_REGISTER(reg)));
for (ii = 0; ii < 0x1000; ii++) {
status = read_4(sc, PHY_CONTROL);
if (status & PHY_RW_OK) {
/* Clear the rw_ok status, and clear other
* bits value. */
write_4(sc, PHY_CONTROL, PHY_RW_OK);
val = PHY_GET_DATA(status);
return (val);
}
}
return (0);
}
static inline void
phy_write(struct ece_softc *sc, int phy, int reg, int data)
{
int ii;
write_4(sc, PHY_CONTROL, PHY_RW_OK);
write_4(sc, PHY_CONTROL,
PHY_ADDRESS(phy) | PHY_REGISTER(reg) |
PHY_WRITE_COMMAND | PHY_DATA(data));
for (ii = 0; ii < 0x1000; ii++) {
if (read_4(sc, PHY_CONTROL) & PHY_RW_OK) {
/* Clear the rw_ok status, and clear other
* bits value.
*/
write_4(sc, PHY_CONTROL, PHY_RW_OK);
return;
}
}
}
static int get_phy_type(struct ece_softc *sc)
{
uint16_t phy0_id = 0, phy1_id = 0;
/*
* Use SMI (MDC/MDIO) to read Link Partner's PHY Identifier
* Register 1.
*/
phy0_id = phy_read(sc, 0, 0x2);
phy1_id = phy_read(sc, 1, 0x2);
if ((phy0_id == 0xFFFF) && (phy1_id == 0x000F))
return (ASIX_GIGA_PHY);
else if ((phy0_id == 0x0243) && (phy1_id == 0x0243))
return (TWO_SINGLE_PHY);
else if ((phy0_id == 0xFFFF) && (phy1_id == 0x0007))
return (VSC8601_GIGA_PHY);
else if ((phy0_id == 0x0243) && (phy1_id == 0xFFFF))
return (IC_PLUS_PHY);
return (NOT_FOUND_PHY);
}
static int
ece_probe(device_t dev)
{
device_set_desc(dev, "Econa Ethernet Controller");
return (0);
}
static int
ece_attach(device_t dev)
{
struct ece_softc *sc;
struct ifnet *ifp = NULL;
struct sysctl_ctx_list *sctx;
struct sysctl_oid *soid;
u_char eaddr[ETHER_ADDR_LEN];
int err;
int i, rid;
uint32_t rnd;
err = 0;
sc = device_get_softc(dev);
sc->dev = dev;
rid = 0;
sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE);
if (sc->mem_res == NULL)
goto out;
power_on_network_interface();
rid = 0;
sc->irq_res_status = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_ACTIVE);
if (sc->irq_res_status == NULL)
goto out;
rid = 1;
/*TSTC: Fm-Switch-Tx-Complete*/
sc->irq_res_tx = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_ACTIVE);
if (sc->irq_res_tx == NULL)
goto out;
rid = 2;
/*FSRC: Fm-Switch-Rx-Complete*/
sc->irq_res_rec = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_ACTIVE);
if (sc->irq_res_rec == NULL)
goto out;
rid = 4;
/*FSQF: Fm-Switch-Queue-Full*/
sc->irq_res_qf = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_ACTIVE);
if (sc->irq_res_qf == NULL)
goto out;
err = ece_activate(dev);
if (err)
goto out;
/* Sysctls */
sctx = device_get_sysctl_ctx(dev);
soid = device_get_sysctl_tree(dev);
ECE_LOCK_INIT(sc);
callout_init_mtx(&sc->tick_ch, &sc->sc_mtx, 0);
if ((err = ece_get_mac(sc, eaddr)) != 0) {
/* No MAC address configured. Generate the random one. */
if (bootverbose)
device_printf(dev,
"Generating random ethernet address.\n");
rnd = arc4random();
/*from if_ae.c/if_ate.c*/
/*
* Set OUI to convenient locally assigned address. 'b'
* is 0x62, which has the locally assigned bit set, and
* the broadcast/multicast bit clear.
*/
eaddr[0] = 'b';
eaddr[1] = 's';
eaddr[2] = 'd';
eaddr[3] = (rnd >> 16) & 0xff;
eaddr[4] = (rnd >> 8) & 0xff;
eaddr[5] = rnd & 0xff;
for (i = 0; i < ETHER_ADDR_LEN; i++)
eaddr[i] = vlan0_mac[i];
}
ece_set_mac(sc, eaddr);
sc->ifp = ifp = if_alloc(IFT_ETHER);
/* Only one PHY at address 0 in this device. */
err = mii_attach(dev, &sc->miibus, ifp, ece_ifmedia_upd,
ece_ifmedia_sts, BMSR_DEFCAPMASK, 0, MII_OFFSET_ANY, 0);
if (err != 0) {
device_printf(dev, "attaching PHYs failed\n");
goto out;
}
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_capabilities = IFCAP_HWCSUM;
ifp->if_hwassist = (CSUM_IP | CSUM_TCP | CSUM_UDP);
ifp->if_capenable = ifp->if_capabilities;
ifp->if_start = ecestart;
ifp->if_ioctl = eceioctl;
ifp->if_init = eceinit;
ifp->if_snd.ifq_drv_maxlen = ECE_MAX_TX_BUFFERS - 1;
IFQ_SET_MAXLEN(&ifp->if_snd, ECE_MAX_TX_BUFFERS - 1);
IFQ_SET_READY(&ifp->if_snd);
/* Create local taskq. */
TASK_INIT(&sc->sc_intr_task, 0, ece_intr_task, sc);
TASK_INIT(&sc->sc_tx_task, 1, ece_tx_task, ifp);
TASK_INIT(&sc->sc_cleanup_task, 2, ece_cleanup_task, sc);
sc->sc_tq = taskqueue_create_fast("ece_taskq", M_WAITOK,
taskqueue_thread_enqueue,
&sc->sc_tq);
if (sc->sc_tq == NULL) {
device_printf(sc->dev, "could not create taskqueue\n");
goto out;
}
ether_ifattach(ifp, eaddr);
/*
* Activate interrupts
*/
err = bus_setup_intr(dev, sc->irq_res_rec, INTR_TYPE_NET | INTR_MPSAFE,
NULL, ece_intr, sc, &sc->intrhand);
if (err) {
ether_ifdetach(ifp);
ECE_LOCK_DESTROY(sc);
goto out;
}
err = bus_setup_intr(dev, sc->irq_res_status,
INTR_TYPE_NET | INTR_MPSAFE,
NULL, ece_intr_status, sc, &sc->intrhand_status);
if (err) {
ether_ifdetach(ifp);
ECE_LOCK_DESTROY(sc);
goto out;
}
err = bus_setup_intr(dev, sc->irq_res_qf, INTR_TYPE_NET | INTR_MPSAFE,
NULL,ece_intr_qf, sc, &sc->intrhand_qf);
if (err) {
ether_ifdetach(ifp);
ECE_LOCK_DESTROY(sc);
goto out;
}
err = bus_setup_intr(dev, sc->irq_res_tx, INTR_TYPE_NET | INTR_MPSAFE,
NULL, ece_intr_tx, sc, &sc->intrhand_tx);
if (err) {
ether_ifdetach(ifp);
ECE_LOCK_DESTROY(sc);
goto out;
}
ECE_TXLOCK_INIT(sc);
ECE_RXLOCK_INIT(sc);
ECE_CLEANUPLOCK_INIT(sc);
/* Enable all interrupt sources. */
write_4(sc, INTERRUPT_MASK, 0x00000000);
/* Enable port 0. */
write_4(sc, PORT_0_CONFIG, read_4(sc, PORT_0_CONFIG) & ~(PORT_DISABLE));
taskqueue_start_threads(&sc->sc_tq, 1, PI_NET, "%s taskq",
device_get_nameunit(sc->dev));
out:
if (err)
ece_deactivate(dev);
if (err && ifp)
if_free(ifp);
return (err);
}
static int
ece_detach(device_t dev)
{
struct ece_softc *sc = device_get_softc(dev);
struct ifnet *ifp = sc->ifp;
ecestop(sc);
if (ifp != NULL) {
ether_ifdetach(ifp);
if_free(ifp);
}
ece_deactivate(dev);
return (0);
}
static void
ece_getaddr(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
{
u_int32_t *paddr;
KASSERT(nsegs == 1, ("wrong number of segments, should be 1"));
paddr = arg;
*paddr = segs->ds_addr;
}
static int
ece_alloc_desc_dma_tx(struct ece_softc *sc)
{
int i;
int error;
/* Allocate a busdma tag and DMA safe memory for TX/RX descriptors. */
error = bus_dma_tag_create(sc->sc_parent_tag, /* parent */
16, 0, /* alignment, boundary */
BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filtfunc, filtfuncarg */
sizeof(eth_tx_desc_t)*ECE_MAX_TX_BUFFERS, /* max size */
1, /*nsegments */
sizeof(eth_tx_desc_t)*ECE_MAX_TX_BUFFERS,
0, /* flags */
NULL, NULL, /* lockfunc, lockfuncarg */
&sc->dmatag_data_tx); /* dmat */
/* Allocate memory for TX ring. */
error = bus_dmamem_alloc(sc->dmatag_data_tx,
(void**)&(sc->desc_tx),
BUS_DMA_NOWAIT | BUS_DMA_ZERO |
BUS_DMA_COHERENT,
&(sc->dmamap_ring_tx));
if (error) {
if_printf(sc->ifp, "failed to allocate DMA memory\n");
bus_dma_tag_destroy(sc->dmatag_data_tx);
sc->dmatag_data_tx = 0;
return (ENXIO);
}
/* Load Ring DMA. */
error = bus_dmamap_load(sc->dmatag_data_tx, sc->dmamap_ring_tx,
sc->desc_tx,
sizeof(eth_tx_desc_t)*ECE_MAX_TX_BUFFERS,
ece_getaddr,
&(sc->ring_paddr_tx), BUS_DMA_NOWAIT);
if (error) {
if_printf(sc->ifp, "can't load descriptor\n");
bus_dmamem_free(sc->dmatag_data_tx, sc->desc_tx,
sc->dmamap_ring_tx);
sc->desc_tx = NULL;
bus_dma_tag_destroy(sc->dmatag_data_tx);
sc->dmatag_data_tx = 0;
return (ENXIO);
}
/* Allocate a busdma tag for mbufs. Alignment is 2 bytes */
error = bus_dma_tag_create(sc->sc_parent_tag, /* parent */
1, 0, /* alignment, boundary */
BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filtfunc, filtfuncarg */
MCLBYTES*MAX_FRAGMENT, /* maxsize */
MAX_FRAGMENT, /* nsegments */
MCLBYTES, 0, /* maxsegsz, flags */
NULL, NULL, /* lockfunc, lockfuncarg */
&sc->dmatag_ring_tx); /* dmat */
if (error) {
if_printf(sc->ifp, "failed to create busdma tag for mbufs\n");
return (ENXIO);
}
for (i = 0; i < ECE_MAX_TX_BUFFERS; i++) {
/* Create dma map for each descriptor. */
error = bus_dmamap_create(sc->dmatag_ring_tx, 0,
&(sc->tx_desc[i].dmamap));
if (error) {
if_printf(sc->ifp, "failed to create map for mbuf\n");
return (ENXIO);
}
}
return (0);
}
static void
ece_free_desc_dma_tx(struct ece_softc *sc)
{
int i;
for (i = 0; i < ECE_MAX_TX_BUFFERS; i++) {
if (sc->tx_desc[i].buff) {
m_freem(sc->tx_desc[i].buff);
sc->tx_desc[i].buff= 0;
}
}
if (sc->dmamap_ring_tx) {
bus_dmamap_unload(sc->dmatag_data_tx, sc->dmamap_ring_tx);
if (sc->desc_tx) {
bus_dmamem_free(sc->dmatag_data_tx,
sc->desc_tx, sc->dmamap_ring_tx);
}
sc->dmamap_ring_tx = 0;
}
if (sc->dmatag_data_tx) {
bus_dma_tag_destroy(sc->dmatag_data_tx);
sc->dmatag_data_tx = 0;
}
if (sc->dmatag_ring_tx) {
for (i = 0; i<ECE_MAX_TX_BUFFERS; i++) {
bus_dmamap_destroy(sc->dmatag_ring_tx,
sc->tx_desc[i].dmamap);
sc->tx_desc[i].dmamap = 0;
}
bus_dma_tag_destroy(sc->dmatag_ring_tx);
sc->dmatag_ring_tx = 0;
}
}
static int
ece_alloc_desc_dma_rx(struct ece_softc *sc)
{
int error;
int i;
/* Allocate a busdma tag and DMA safe memory for RX descriptors. */
error = bus_dma_tag_create(sc->sc_parent_tag, /* parent */
16, 0, /* alignment, boundary */
BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filtfunc, filtfuncarg */
/* maxsize, nsegments */
sizeof(eth_rx_desc_t)*ECE_MAX_RX_BUFFERS, 1,
/* maxsegsz, flags */
sizeof(eth_rx_desc_t)*ECE_MAX_RX_BUFFERS, 0,
NULL, NULL, /* lockfunc, lockfuncarg */
&sc->dmatag_data_rx); /* dmat */
/* Allocate RX ring. */
error = bus_dmamem_alloc(sc->dmatag_data_rx,
(void**)&(sc->desc_rx),
BUS_DMA_NOWAIT | BUS_DMA_ZERO |
BUS_DMA_COHERENT,
&(sc->dmamap_ring_rx));
if (error) {
if_printf(sc->ifp, "failed to allocate DMA memory\n");
return (ENXIO);
}
/* Load dmamap. */
error = bus_dmamap_load(sc->dmatag_data_rx, sc->dmamap_ring_rx,
sc->desc_rx,
sizeof(eth_rx_desc_t)*ECE_MAX_RX_BUFFERS,
ece_getaddr,
&(sc->ring_paddr_rx), BUS_DMA_NOWAIT);
if (error) {
if_printf(sc->ifp, "can't load descriptor\n");
bus_dmamem_free(sc->dmatag_data_rx, sc->desc_rx,
sc->dmamap_ring_rx);
bus_dma_tag_destroy(sc->dmatag_data_rx);
sc->desc_rx = NULL;
return (ENXIO);
}
/* Allocate a busdma tag for mbufs. */
error = bus_dma_tag_create(sc->sc_parent_tag,/* parent */
16, 0, /* alignment, boundary */
BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filtfunc, filtfuncarg */
MCLBYTES, 1, /* maxsize, nsegments */
MCLBYTES, 0, /* maxsegsz, flags */
NULL, NULL, /* lockfunc, lockfuncarg */
&sc->dmatag_ring_rx); /* dmat */
if (error) {
if_printf(sc->ifp, "failed to create busdma tag for mbufs\n");
return (ENXIO);
}
for (i = 0; i<ECE_MAX_RX_BUFFERS; i++) {
error = bus_dmamap_create(sc->dmatag_ring_rx, 0,
&sc->rx_desc[i].dmamap);
if (error) {
if_printf(sc->ifp, "failed to create map for mbuf\n");
return (ENXIO);
}
}
error = bus_dmamap_create(sc->dmatag_ring_rx, 0, &sc->rx_sparemap);
if (error) {
if_printf(sc->ifp, "failed to create spare map\n");
return (ENXIO);
}
return (0);
}
static void
ece_free_desc_dma_rx(struct ece_softc *sc)
{
int i;
for (i = 0; i < ECE_MAX_RX_BUFFERS; i++) {
if (sc->rx_desc[i].buff) {
m_freem(sc->rx_desc[i].buff);
sc->rx_desc[i].buff= 0;
}
}
if (sc->dmatag_data_rx) {
bus_dmamap_unload(sc->dmatag_data_rx, sc->dmamap_ring_rx);
bus_dmamem_free(sc->dmatag_data_rx, sc->desc_rx,
sc->dmamap_ring_rx);
bus_dma_tag_destroy(sc->dmatag_data_rx);
sc->dmatag_data_rx = 0;
sc->dmamap_ring_rx = 0;
sc->desc_rx = 0;
}
if (sc->dmatag_ring_rx) {
for (i = 0; i < ECE_MAX_RX_BUFFERS; i++)
bus_dmamap_destroy(sc->dmatag_ring_rx,
sc->rx_desc[i].dmamap);
bus_dmamap_destroy(sc->dmatag_ring_rx, sc->rx_sparemap);
bus_dma_tag_destroy(sc->dmatag_ring_rx);
sc->dmatag_ring_rx = 0;
}
}
static int
ece_new_rxbuf(struct ece_softc *sc, struct rx_desc_info* descinfo)
{
struct mbuf *new_mbuf;
bus_dma_segment_t seg[1];
bus_dmamap_t map;
int error;
int nsegs;
bus_dma_tag_t tag;
tag = sc->dmatag_ring_rx;
new_mbuf = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR);
if (new_mbuf == NULL)
return (ENOBUFS);
new_mbuf->m_len = new_mbuf->m_pkthdr.len = MCLBYTES;
error = bus_dmamap_load_mbuf_sg(tag, sc->rx_sparemap, new_mbuf,
seg, &nsegs, BUS_DMA_NOWAIT);
KASSERT(nsegs == 1, ("Too many segments returned!"));
if (nsegs != 1 || error) {
m_free(new_mbuf);
return (ENOBUFS);
}
if (descinfo->buff != NULL) {
bus_dmamap_sync(tag, descinfo->dmamap, BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(tag, descinfo->dmamap);
}
map = descinfo->dmamap;
descinfo->dmamap = sc->rx_sparemap;
sc->rx_sparemap = map;
bus_dmamap_sync(tag, descinfo->dmamap, BUS_DMASYNC_PREREAD);
descinfo->buff = new_mbuf;
descinfo->desc->data_ptr = seg->ds_addr;
descinfo->desc->length = seg->ds_len - 2;
return (0);
}
static int
ece_allocate_dma(struct ece_softc *sc)
{
eth_tx_desc_t *desctx;
eth_rx_desc_t *descrx;
int i;
int error;
/* Create parent tag for tx and rx */
error = bus_dma_tag_create(
bus_get_dma_tag(sc->dev),/* parent */
1, 0, /* alignment, boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
BUS_SPACE_MAXSIZE_32BIT, 0,/* maxsize, nsegments */
BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
0, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->sc_parent_tag);
ece_alloc_desc_dma_tx(sc);
for (i = 0; i < ECE_MAX_TX_BUFFERS; i++) {
desctx = (eth_tx_desc_t *)(&sc->desc_tx[i]);
memset(desctx, 0, sizeof(eth_tx_desc_t));
desctx->length = MAX_PACKET_LEN;
desctx->cown = 1;
if (i == ECE_MAX_TX_BUFFERS - 1)
desctx->eor = 1;
}
ece_alloc_desc_dma_rx(sc);
for (i = 0; i < ECE_MAX_RX_BUFFERS; i++) {
descrx = &(sc->desc_rx[i]);
memset(descrx, 0, sizeof(eth_rx_desc_t));
sc->rx_desc[i].desc = descrx;
sc->rx_desc[i].buff = 0;
ece_new_rxbuf(sc, &(sc->rx_desc[i]));
if (i == ECE_MAX_RX_BUFFERS - 1)
descrx->eor = 1;
}
sc->tx_prod = 0;
sc->tx_cons = 0;
sc->last_rx = 0;
sc->desc_curr_tx = 0;
return (0);
}
static int
ece_activate(device_t dev)
{
struct ece_softc *sc;
int err;
uint32_t mac_port_config;
struct ifnet *ifp;
sc = device_get_softc(dev);
ifp = sc->ifp;
initial_switch_config = read_4(sc, SWITCH_CONFIG);
initial_cpu_config = read_4(sc, CPU_PORT_CONFIG);
initial_port0_config = read_4(sc, MAC_PORT_0_CONFIG);
initial_port1_config = read_4(sc, MAC_PORT_1_CONFIG);
/* Disable Port 0 */
mac_port_config = read_4(sc, MAC_PORT_0_CONFIG);
mac_port_config |= (PORT_DISABLE);
write_4(sc, MAC_PORT_0_CONFIG, mac_port_config);
/* Disable Port 1 */
mac_port_config = read_4(sc, MAC_PORT_1_CONFIG);
mac_port_config |= (PORT_DISABLE);
write_4(sc, MAC_PORT_1_CONFIG, mac_port_config);
err = ece_allocate_dma(sc);
if (err) {
if_printf(sc->ifp, "failed allocating dma\n");
goto out;
}
write_4(sc, TS_DESCRIPTOR_POINTER, sc->ring_paddr_tx);
write_4(sc, TS_DESCRIPTOR_BASE_ADDR, sc->ring_paddr_tx);
write_4(sc, FS_DESCRIPTOR_POINTER, sc->ring_paddr_rx);
write_4(sc, FS_DESCRIPTOR_BASE_ADDR, sc->ring_paddr_rx);
write_4(sc, FS_DMA_CONTROL, 1);
return (0);
out:
return (ENXIO);
}
static void
ece_deactivate(device_t dev)
{
struct ece_softc *sc;
sc = device_get_softc(dev);
if (sc->intrhand)
bus_teardown_intr(dev, sc->irq_res_rec, sc->intrhand);
sc->intrhand = 0;
if (sc->intrhand_qf)
bus_teardown_intr(dev, sc->irq_res_qf, sc->intrhand_qf);
sc->intrhand_qf = 0;
bus_generic_detach(sc->dev);
if (sc->miibus)
device_delete_child(sc->dev, sc->miibus);
if (sc->mem_res)
bus_release_resource(dev, SYS_RES_IOPORT,
rman_get_rid(sc->mem_res), sc->mem_res);
sc->mem_res = 0;
if (sc->irq_res_rec)
bus_release_resource(dev, SYS_RES_IRQ,
rman_get_rid(sc->irq_res_rec), sc->irq_res_rec);
if (sc->irq_res_qf)
bus_release_resource(dev, SYS_RES_IRQ,
rman_get_rid(sc->irq_res_qf), sc->irq_res_qf);
if (sc->irq_res_qf)
bus_release_resource(dev, SYS_RES_IRQ,
rman_get_rid(sc->irq_res_status), sc->irq_res_status);
sc->irq_res_rec = 0;
sc->irq_res_qf = 0;
sc->irq_res_status = 0;
ECE_TXLOCK_DESTROY(sc);
ECE_RXLOCK_DESTROY(sc);
ece_free_desc_dma_tx(sc);
ece_free_desc_dma_rx(sc);
return;
}
/*
* Change media according to request.
*/
static int
ece_ifmedia_upd(struct ifnet *ifp)
{
struct ece_softc *sc = ifp->if_softc;
struct mii_data *mii;
int error;
mii = device_get_softc(sc->miibus);
ECE_LOCK(sc);
error = mii_mediachg(mii);
ECE_UNLOCK(sc);
return (error);
}
/*
* Notify the world which media we're using.
*/
static void
ece_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
{
struct ece_softc *sc = ifp->if_softc;
struct mii_data *mii;
mii = device_get_softc(sc->miibus);
ECE_LOCK(sc);
mii_pollstat(mii);
ifmr->ifm_active = mii->mii_media_active;
ifmr->ifm_status = mii->mii_media_status;
ECE_UNLOCK(sc);
}
static void
ece_tick(void *xsc)
{
struct ece_softc *sc = xsc;
struct mii_data *mii;
int active;
mii = device_get_softc(sc->miibus);
active = mii->mii_media_active;
mii_tick(mii);
/*
* Schedule another timeout one second from now.
*/
callout_reset(&sc->tick_ch, hz, ece_tick, sc);
}
static uint32_t
read_mac_entry(struct ece_softc *ec,
uint8_t *mac_result,
int first)
{
uint32_t ii;
struct arl_table_entry_t entry;
uint32_t *entry_val;
write_4(ec, ARL_TABLE_ACCESS_CONTROL_0, 0);
write_4(ec, ARL_TABLE_ACCESS_CONTROL_1, 0);
write_4(ec, ARL_TABLE_ACCESS_CONTROL_2, 0);
if (first)
write_4(ec, ARL_TABLE_ACCESS_CONTROL_0, 0x1);
else
write_4(ec, ARL_TABLE_ACCESS_CONTROL_0, 0x2);
for (ii = 0; ii < 0x1000; ii++)
if (read_4(ec, ARL_TABLE_ACCESS_CONTROL_1) & (0x1))
break;
entry_val = (uint32_t*) (&entry);
entry_val[0] = read_4(ec, ARL_TABLE_ACCESS_CONTROL_1);
entry_val[1] = read_4(ec, ARL_TABLE_ACCESS_CONTROL_2);
if (mac_result)
memcpy(mac_result, entry.mac_addr, ETHER_ADDR_LEN);
return (entry.table_end);
}
static uint32_t
write_arl_table_entry(struct ece_softc *ec,
uint32_t filter,
uint32_t vlan_mac,
uint32_t vlan_gid,
uint32_t age_field,
uint32_t port_map,
const uint8_t *mac_addr)
{
uint32_t ii;
uint32_t *entry_val;
struct arl_table_entry_t entry;
memset(&entry, 0, sizeof(entry));
entry.filter = filter;
entry.vlan_mac = vlan_mac;
entry.vlan_gid = vlan_gid;
entry.age_field = age_field;
entry.port_map = port_map;
memcpy(entry.mac_addr, mac_addr, ETHER_ADDR_LEN);
entry_val = (uint32_t*) (&entry);
write_4(ec, ARL_TABLE_ACCESS_CONTROL_0, 0);
write_4(ec, ARL_TABLE_ACCESS_CONTROL_1, 0);
write_4(ec, ARL_TABLE_ACCESS_CONTROL_2, 0);
write_4(ec, ARL_TABLE_ACCESS_CONTROL_1, entry_val[0]);
write_4(ec, ARL_TABLE_ACCESS_CONTROL_2, entry_val[1]);
write_4(ec, ARL_TABLE_ACCESS_CONTROL_0, ARL_WRITE_COMMAND);
for (ii = 0; ii < 0x1000; ii++)
if (read_4(ec, ARL_TABLE_ACCESS_CONTROL_1) &
ARL_COMMAND_COMPLETE)
return (1); /* Write OK. */
/* Write failed. */
return (0);
}
static void
remove_mac_entry(struct ece_softc *sc,
uint8_t *mac)
{
/* Invalid age_field mean erase this entry. */
write_arl_table_entry(sc, 0, 1, VLAN0_GROUP_ID,
INVALID_ENTRY, VLAN0_GROUP,
mac);
}
static void
add_mac_entry(struct ece_softc *sc,
uint8_t *mac)
{
write_arl_table_entry(sc, 0, 1, VLAN0_GROUP_ID,
NEW_ENTRY, VLAN0_GROUP,
mac);
}
/**
* The behavior of ARL table reading and deletion is not well defined
* in the documentation. To be safe, all mac addresses are put to a
* list, then deleted.
*
*/
static void
clear_mac_entries(struct ece_softc *ec, int include_this_mac)
{
int table_end;
struct mac_list * temp;
struct mac_list * mac_list_header;
struct mac_list * current;
char mac[ETHER_ADDR_LEN];
current = 0;
mac_list_header = 0;
table_end = read_mac_entry(ec, mac, 1);
while (!table_end) {
if (!include_this_mac &&
memcmp(mac, vlan0_mac, ETHER_ADDR_LEN) == 0) {
/* Read next entry. */
table_end = read_mac_entry(ec, mac, 0);
continue;
}
temp = (struct mac_list*)malloc(sizeof(struct mac_list),
M_DEVBUF,
M_NOWAIT | M_ZERO);
memcpy(temp->mac_addr, mac, ETHER_ADDR_LEN);
temp->next = 0;
if (mac_list_header) {
current->next = temp;
current = temp;
} else {
mac_list_header = temp;
current = temp;
}
/* Read next Entry */
table_end = read_mac_entry(ec, mac, 0);
}
current = mac_list_header;
while (current) {
remove_mac_entry(ec, current->mac_addr);
temp = current;
current = current->next;
free(temp, M_DEVBUF);
}
}
static int
configure_lan_port(struct ece_softc *sc, int phy_type)
{
uint32_t sw_config;
uint32_t mac_port_config;
/*
* Configure switch
*/
sw_config = read_4(sc, SWITCH_CONFIG);
/* Enable fast aging. */
sw_config |= FAST_AGING;
/* Enable IVL learning. */
sw_config |= IVL_LEARNING;
/* Disable hardware NAT. */
sw_config &= ~(HARDWARE_NAT);
sw_config |= SKIP_L2_LOOKUP_PORT_0 | SKIP_L2_LOOKUP_PORT_1| NIC_MODE;
write_4(sc, SWITCH_CONFIG, sw_config);
sw_config = read_4(sc, SWITCH_CONFIG);
mac_port_config = read_4(sc, MAC_PORT_0_CONFIG);
if (!(mac_port_config & 0x1) || (mac_port_config & 0x2))
if_printf(sc->ifp, "Link Down\n");
else
write_4(sc, MAC_PORT_0_CONFIG, mac_port_config);
return (0);
}
static void
set_pvid(struct ece_softc *sc, int port0, int port1, int cpu)
{
uint32_t val;
val = read_4(sc, VLAN_PORT_PVID) & (~(0x7 << 0));
write_4(sc, VLAN_PORT_PVID, val);
val = read_4(sc, VLAN_PORT_PVID) | ((port0) & 0x07);
write_4(sc, VLAN_PORT_PVID, val);
val = read_4(sc, VLAN_PORT_PVID) & (~(0x7 << 4));
write_4(sc, VLAN_PORT_PVID, val);
val = read_4(sc, VLAN_PORT_PVID) | (((port1) & 0x07) << 4);
write_4(sc, VLAN_PORT_PVID, val);
val = read_4(sc, VLAN_PORT_PVID) & (~(0x7 << 8));
write_4(sc, VLAN_PORT_PVID, val);
val = read_4(sc, VLAN_PORT_PVID) | (((cpu) & 0x07) << 8);
write_4(sc, VLAN_PORT_PVID, val);
}
/* VLAN related functions */
static void
set_vlan_vid(struct ece_softc *sc, int vlan)
{
const uint32_t regs[] = {
VLAN_VID_0_1,
VLAN_VID_0_1,
VLAN_VID_2_3,
VLAN_VID_2_3,
VLAN_VID_4_5,
VLAN_VID_4_5,
VLAN_VID_6_7,
VLAN_VID_6_7
};
const int vids[] = {
VLAN0_VID,
VLAN1_VID,
VLAN2_VID,
VLAN3_VID,
VLAN4_VID,
VLAN5_VID,
VLAN6_VID,
VLAN7_VID
};
uint32_t val;
uint32_t reg;
int vid;
reg = regs[vlan];
vid = vids[vlan];
if (vlan & 1) {
val = read_4(sc, reg);
write_4(sc, reg, val & (~(0xFFF << 0)));
val = read_4(sc, reg);
write_4(sc, reg, val|((vid & 0xFFF) << 0));
} else {
val = read_4(sc, reg);
write_4(sc, reg, val & (~(0xFFF << 12)));
val = read_4(sc, reg);
write_4(sc, reg, val|((vid & 0xFFF) << 12));
}
}
static void
set_vlan_member(struct ece_softc *sc, int vlan)
{
unsigned char shift;
uint32_t val;
int group;
const int groups[] = {
VLAN0_GROUP,
VLAN1_GROUP,
VLAN2_GROUP,
VLAN3_GROUP,
VLAN4_GROUP,
VLAN5_GROUP,
VLAN6_GROUP,
VLAN7_GROUP
};
group = groups[vlan];
shift = vlan*3;
val = read_4(sc, VLAN_MEMBER_PORT_MAP) & (~(0x7 << shift));
write_4(sc, VLAN_MEMBER_PORT_MAP, val);
val = read_4(sc, VLAN_MEMBER_PORT_MAP);
write_4(sc, VLAN_MEMBER_PORT_MAP, val | ((group & 0x7) << shift));
}
static void
set_vlan_tag(struct ece_softc *sc, int vlan)
{
unsigned char shift;
uint32_t val;
int tag = 0;
shift = vlan*3;
val = read_4(sc, VLAN_TAG_PORT_MAP) & (~(0x7 << shift));
write_4(sc, VLAN_TAG_PORT_MAP, val);
val = read_4(sc, VLAN_TAG_PORT_MAP);
write_4(sc, VLAN_TAG_PORT_MAP, val | ((tag & 0x7) << shift));
}
static int
configure_cpu_port(struct ece_softc *sc)
{
uint32_t cpu_port_config;
int i;
cpu_port_config = read_4(sc, CPU_PORT_CONFIG);
/* SA learning Disable */
cpu_port_config |= (SA_LEARNING_DISABLE);
/* set data offset + 2 */
cpu_port_config &= ~(1U << 31);
write_4(sc, CPU_PORT_CONFIG, cpu_port_config);
if (!write_arl_table_entry(sc, 0, 1, VLAN0_GROUP_ID,
STATIC_ENTRY, VLAN0_GROUP,
vlan0_mac))
return (1);
set_pvid(sc, PORT0_PVID, PORT1_PVID, CPU_PORT_PVID);
for (i = 0; i < 8; i++) {
set_vlan_vid(sc, i);
set_vlan_member(sc, i);
set_vlan_tag(sc, i);
}
/* disable all interrupt status sources */
write_4(sc, INTERRUPT_MASK, 0xffff1fff);
/* clear previous interrupt sources */
write_4(sc, INTERRUPT_STATUS, 0x00001FFF);
write_4(sc, TS_DMA_CONTROL, 0);
write_4(sc, FS_DMA_CONTROL, 0);
return (0);
}
static int
hardware_init(struct ece_softc *sc)
{
int status = 0;
static int gw_phy_type;
gw_phy_type = get_phy_type(sc);
/* Currently only ic_plus phy is supported. */
if (gw_phy_type != IC_PLUS_PHY) {
device_printf(sc->dev, "PHY type is not supported (%d)\n",
gw_phy_type);
return (-1);
}
status = configure_lan_port(sc, gw_phy_type);
configure_cpu_port(sc);
return (0);
}
static void
set_mac_address(struct ece_softc *sc, const char *mac, int mac_len)
{
/* Invalid age_field mean erase this entry. */
write_arl_table_entry(sc, 0, 1, VLAN0_GROUP_ID,
INVALID_ENTRY, VLAN0_GROUP,
mac);
memcpy(vlan0_mac, mac, ETHER_ADDR_LEN);
write_arl_table_entry(sc, 0, 1, VLAN0_GROUP_ID,
STATIC_ENTRY, VLAN0_GROUP,
mac);
}
static void
ece_set_mac(struct ece_softc *sc, u_char *eaddr)
{
memcpy(vlan0_mac, eaddr, ETHER_ADDR_LEN);
set_mac_address(sc, eaddr, ETHER_ADDR_LEN);
}
/*
* TODO: the device doesn't have MAC stored, we should read the
* configuration stored in FLASH, but the format depends on the
* bootloader used.*
*/
static int
ece_get_mac(struct ece_softc *sc, u_char *eaddr)
{
return (ENXIO);
}
static void
ece_intr_rx_locked(struct ece_softc *sc, int count)
{
struct ifnet *ifp = sc->ifp;
struct mbuf *mb;
struct rx_desc_info *rxdesc;
eth_rx_desc_t *desc;
int fssd_curr;
int fssd;
int i;
int idx;
int rxcount;
uint32_t status;
fssd_curr = read_4(sc, FS_DESCRIPTOR_POINTER);
fssd = (fssd_curr - (uint32_t)sc->ring_paddr_rx)>>4;
desc = sc->rx_desc[sc->last_rx].desc;
/* Prepare to read the data in the ring. */
bus_dmamap_sync(sc->dmatag_ring_rx,
sc->dmamap_ring_rx,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
if (fssd > sc->last_rx)
rxcount = fssd - sc->last_rx;
else if (fssd < sc->last_rx)
rxcount = (ECE_MAX_RX_BUFFERS - sc->last_rx) + fssd;
else {
if (desc->cown == 0)
return;
else
rxcount = ECE_MAX_RX_BUFFERS;
}
for (i= 0; i < rxcount; i++) {
status = desc->cown;
if (!status)
break;
idx = sc->last_rx;
rxdesc = &sc->rx_desc[idx];
mb = rxdesc->buff;
if (desc->length < ETHER_MIN_LEN - ETHER_CRC_LEN ||
desc->length > ETHER_MAX_LEN - ETHER_CRC_LEN +
ETHER_VLAN_ENCAP_LEN) {
ifp->if_ierrors++;
desc->cown = 0;
desc->length = MCLBYTES - 2;
/* Invalid packet, skip and process next
* packet.
*/
continue;
}
if (ece_new_rxbuf(sc, rxdesc) != 0) {
ifp->if_iqdrops++;
desc->cown = 0;
desc->length = MCLBYTES - 2;
break;
}
/**
* The device will write to addrress + 2 So we need to adjust
* the address after the packet is received.
*/
mb->m_data += 2;
mb->m_len = mb->m_pkthdr.len = desc->length;
mb->m_flags |= M_PKTHDR;
mb->m_pkthdr.rcvif = ifp;
if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) {
/*check for valid checksum*/
if ( (!desc->l4f) && (desc->prot != 3)) {
mb->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
mb->m_pkthdr.csum_flags |= CSUM_IP_VALID;
mb->m_pkthdr.csum_data = 0xffff;
}
}
ECE_RXUNLOCK(sc);
(*ifp->if_input)(ifp, mb);
ECE_RXLOCK(sc);
desc->cown = 0;
desc->length = MCLBYTES - 2;
bus_dmamap_sync(sc->dmatag_ring_rx,
sc->dmamap_ring_rx,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
if (sc->last_rx == ECE_MAX_RX_BUFFERS - 1)
sc->last_rx = 0;
else
sc->last_rx++;
desc = sc->rx_desc[sc->last_rx].desc;
}
/* Sync updated flags. */
bus_dmamap_sync(sc->dmatag_ring_rx,
sc->dmamap_ring_rx,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
return;
}
static void
ece_intr_task(void *arg, int pending __unused)
{
struct ece_softc *sc = arg;
ECE_RXLOCK(sc);
ece_intr_rx_locked(sc, -1);
ECE_RXUNLOCK(sc);
}
static void
ece_intr(void *xsc)
{
struct ece_softc *sc = xsc;
struct ifnet *ifp = sc->ifp;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
write_4(sc, FS_DMA_CONTROL, 0);
return;
}
taskqueue_enqueue(sc->sc_tq, &sc->sc_intr_task);
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
taskqueue_enqueue(sc->sc_tq, &sc->sc_tx_task);
}
static void
ece_intr_status(void *xsc)
{
struct ece_softc *sc = xsc;
struct ifnet *ifp = sc->ifp;
int stat;
stat = read_4(sc, INTERRUPT_STATUS);
write_4(sc, INTERRUPT_STATUS, stat);
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
if ((stat & ERROR_MASK) != 0)
ifp->if_iqdrops++;
}
}
static void
ece_cleanup_locked(struct ece_softc *sc)
{
eth_tx_desc_t *desc;
if (sc->tx_cons == sc->tx_prod) return;
/* Prepare to read the ring (owner bit). */
bus_dmamap_sync(sc->dmatag_ring_tx,
sc->dmamap_ring_tx,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
while (sc->tx_cons != sc->tx_prod) {
desc = sc->tx_desc[sc->tx_cons].desc;
if (desc->cown != 0) {
struct tx_desc_info *td = &(sc->tx_desc[sc->tx_cons]);
/* We are finished with this descriptor ... */
bus_dmamap_sync(sc->dmatag_data_tx, td->dmamap,
BUS_DMASYNC_POSTWRITE);
/* ... and unload, so we can reuse. */
bus_dmamap_unload(sc->dmatag_data_tx, td->dmamap);
m_freem(td->buff);
td->buff = 0;
sc->tx_cons = (sc->tx_cons + 1) % ECE_MAX_TX_BUFFERS;
} else {
break;
}
}
}
static void
ece_cleanup_task(void *arg, int pending __unused)
{
struct ece_softc *sc = arg;
ECE_CLEANUPLOCK(sc);
ece_cleanup_locked(sc);
ECE_CLEANUPUNLOCK(sc);
}
static void
ece_intr_tx(void *xsc)
{
struct ece_softc *sc = xsc;
struct ifnet *ifp = sc->ifp;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
/* This should not happen, stop DMA. */
write_4(sc, FS_DMA_CONTROL, 0);
return;
}
taskqueue_enqueue(sc->sc_tq, &sc->sc_cleanup_task);
}
static void
ece_intr_qf(void *xsc)
{
struct ece_softc *sc = xsc;
struct ifnet *ifp = sc->ifp;
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
/* This should not happen, stop DMA. */
write_4(sc, FS_DMA_CONTROL, 0);
return;
}
taskqueue_enqueue(sc->sc_tq, &sc->sc_intr_task);
write_4(sc, FS_DMA_CONTROL, 1);
}
/*
* Reset and initialize the chip
*/
static void
eceinit_locked(void *xsc)
{
struct ece_softc *sc = xsc;
struct ifnet *ifp = sc->ifp;
struct mii_data *mii;
uint32_t cfg_reg;
uint32_t cpu_port_config;
uint32_t mac_port_config;
while (1) {
cfg_reg = read_4(sc, BIST_RESULT_TEST_0);
if ((cfg_reg & (1<<17)))
break;
DELAY(100);
}
/* Set to default values. */
write_4(sc, SWITCH_CONFIG, 0x007AA7A1);
write_4(sc, MAC_PORT_0_CONFIG, 0x00423D00);
write_4(sc, MAC_PORT_1_CONFIG, 0x00423D80);
write_4(sc, CPU_PORT_CONFIG, 0x004C0000);
hardware_init(sc);
mac_port_config = read_4(sc, MAC_PORT_0_CONFIG);
/* Enable Port 0 */
mac_port_config &= (~(PORT_DISABLE));
write_4(sc, MAC_PORT_0_CONFIG, mac_port_config);
cpu_port_config = read_4(sc, CPU_PORT_CONFIG);
/* Enable CPU. */
cpu_port_config &= ~(PORT_DISABLE);
write_4(sc, CPU_PORT_CONFIG, cpu_port_config);
/*
* Set 'running' flag, and clear output active flag
* and attempt to start the output
*/
ifp->if_drv_flags |= IFF_DRV_RUNNING;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
mii = device_get_softc(sc->miibus);
mii_pollstat(mii);
/* Enable DMA. */
write_4(sc, FS_DMA_CONTROL, 1);
callout_reset(&sc->tick_ch, hz, ece_tick, sc);
}
static inline int
ece_encap(struct ece_softc *sc, struct mbuf *m0)
{
struct ifnet *ifp;
bus_dma_segment_t segs[MAX_FRAGMENT];
bus_dmamap_t mapp;
eth_tx_desc_t *desc = 0;
int csum_flags;
int desc_no;
int error;
int nsegs;
int seg;
ifp = sc->ifp;
/* Fetch unused map */
mapp = sc->tx_desc[sc->tx_prod].dmamap;
error = bus_dmamap_load_mbuf_sg(sc->dmatag_ring_tx, mapp,
m0, segs, &nsegs,
BUS_DMA_NOWAIT);
if (error != 0) {
bus_dmamap_unload(sc->dmatag_ring_tx, mapp);
return ((error != 0) ? error : -1);
}
desc = &(sc->desc_tx[sc->desc_curr_tx]);
sc->tx_desc[sc->tx_prod].desc = desc;
sc->tx_desc[sc->tx_prod].buff = m0;
desc_no = sc->desc_curr_tx;
for (seg = 0; seg < nsegs; seg++) {
if (desc->cown == 0 ) {
if_printf(ifp, "ERROR: descriptor is still used\n");
return (-1);
}
desc->length = segs[seg].ds_len;
desc->data_ptr = segs[seg].ds_addr;
if (seg == 0) {
desc->fs = 1;
} else {
desc->fs = 0;
}
if (seg == nsegs - 1) {
desc->ls = 1;
} else {
desc->ls = 0;
}
csum_flags = m0->m_pkthdr.csum_flags;
desc->fr = 1;
desc->pmap = 1;
desc->insv = 0;
desc->ico = 0;
desc->tco = 0;
desc->uco = 0;
desc->interrupt = 1;
if (csum_flags & CSUM_IP) {
desc->ico = 1;
if (csum_flags & CSUM_TCP)
desc->tco = 1;
if (csum_flags & CSUM_UDP)
desc->uco = 1;
}
desc++;
sc->desc_curr_tx = (sc->desc_curr_tx + 1) % ECE_MAX_TX_BUFFERS;
if (sc->desc_curr_tx == 0) {
desc = (eth_tx_desc_t *)&(sc->desc_tx[0]);
}
}
desc = sc->tx_desc[sc->tx_prod].desc;
sc->tx_prod = (sc->tx_prod + 1) % ECE_MAX_TX_BUFFERS;
/*
* After all descriptors are set, we set the flags to start the
* sending proces.
*/
for (seg = 0; seg < nsegs; seg++) {
desc->cown = 0;
desc++;
desc_no = (desc_no + 1) % ECE_MAX_TX_BUFFERS;
if (desc_no == 0)
desc = (eth_tx_desc_t *)&(sc->desc_tx[0]);
}
bus_dmamap_sync(sc->dmatag_data_tx, mapp, BUS_DMASYNC_PREWRITE);
return (0);
}
/*
* dequeu packets and transmit
*/
static void
ecestart_locked(struct ifnet *ifp)
{
struct ece_softc *sc;
struct mbuf *m0;
uint32_t queued = 0;
sc = ifp->if_softc;
if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
IFF_DRV_RUNNING)
return;
bus_dmamap_sync(sc->dmatag_ring_tx,
sc->dmamap_ring_tx,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
for (;;) {
/* Get packet from the queue */
IF_DEQUEUE(&ifp->if_snd, m0);
if (m0 == NULL)
break;
if (ece_encap(sc, m0)) {
IF_PREPEND(&ifp->if_snd, m0);
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
break;
}
queued++;
BPF_MTAP(ifp, m0);
}
if (queued) {
bus_dmamap_sync(sc->dmatag_ring_tx, sc->dmamap_ring_tx,
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
write_4(sc, TS_DMA_CONTROL, 1);
}
}
static void
eceinit(void *xsc)
{
struct ece_softc *sc = xsc;
ECE_LOCK(sc);
eceinit_locked(sc);
ECE_UNLOCK(sc);
}
static void
ece_tx_task(void *arg, int pending __unused)
{
struct ifnet *ifp;
ifp = (struct ifnet *)arg;
ecestart(ifp);
}
static void
ecestart(struct ifnet *ifp)
{
struct ece_softc *sc = ifp->if_softc;
ECE_TXLOCK(sc);
ecestart_locked(ifp);
ECE_TXUNLOCK(sc);
}
/*
* Turn off interrupts, and stop the nic. Can be called with sc->ifp
* NULL so be careful.
*/
static void
ecestop(struct ece_softc *sc)
{
struct ifnet *ifp = sc->ifp;
uint32_t mac_port_config;
write_4(sc, TS_DMA_CONTROL, 0);
write_4(sc, FS_DMA_CONTROL, 0);
if (ifp)
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
callout_stop(&sc->tick_ch);
/*Disable Port 0 */
mac_port_config = read_4(sc, MAC_PORT_0_CONFIG);
mac_port_config |= (PORT_DISABLE);
write_4(sc, MAC_PORT_0_CONFIG, mac_port_config);
/*Disable Port 1 */
mac_port_config = read_4(sc, MAC_PORT_1_CONFIG);
mac_port_config |= (PORT_DISABLE);
write_4(sc, MAC_PORT_1_CONFIG, mac_port_config);
/* Disable all interrupt status sources. */
write_4(sc, INTERRUPT_MASK, 0x00001FFF);
/* Clear previous interrupt sources. */
write_4(sc, INTERRUPT_STATUS, 0x00001FFF);
write_4(sc, SWITCH_CONFIG, initial_switch_config);
write_4(sc, CPU_PORT_CONFIG, initial_cpu_config);
write_4(sc, MAC_PORT_0_CONFIG, initial_port0_config);
write_4(sc, MAC_PORT_1_CONFIG, initial_port1_config);
clear_mac_entries(sc, 1);
}
static void
ece_restart(struct ece_softc *sc)
{
struct ifnet *ifp = sc->ifp;
ifp->if_drv_flags |= IFF_DRV_RUNNING;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
/* Enable port 0. */
write_4(sc, PORT_0_CONFIG,
read_4(sc, PORT_0_CONFIG) & ~(PORT_DISABLE));
write_4(sc, INTERRUPT_MASK, 0x00000000);
write_4(sc, FS_DMA_CONTROL, 1);
callout_reset(&sc->tick_ch, hz, ece_tick, sc);
}
static void
set_filter(struct ece_softc *sc)
{
struct ifnet *ifp;
struct ifmultiaddr *ifma;
uint32_t mac_port_config;
ifp = sc->ifp;
clear_mac_entries(sc, 0);
if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
mac_port_config = read_4(sc, MAC_PORT_0_CONFIG);
mac_port_config &= ~(DISABLE_BROADCAST_PACKET);
mac_port_config &= ~(DISABLE_MULTICAST_PACKET);
write_4(sc, MAC_PORT_0_CONFIG, mac_port_config);
return;
}
if_maddr_rlock(ifp);
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
add_mac_entry(sc,
LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
}
if_maddr_runlock(ifp);
}
static int
eceioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
{
struct ece_softc *sc = ifp->if_softc;
struct mii_data *mii;
struct ifreq *ifr = (struct ifreq *)data;
int mask, error = 0;
switch (cmd) {
case SIOCSIFFLAGS:
ECE_LOCK(sc);
if ((ifp->if_flags & IFF_UP) == 0 &&
ifp->if_drv_flags & IFF_DRV_RUNNING) {
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
ecestop(sc);
} else {
/* Reinitialize card on any parameter change. */
if ((ifp->if_flags & IFF_UP) &&
!(ifp->if_drv_flags & IFF_DRV_RUNNING))
ece_restart(sc);
}
ECE_UNLOCK(sc);
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
ECE_LOCK(sc);
set_filter(sc);
ECE_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:
mask = ifp->if_capenable ^ ifr->ifr_reqcap;
if (mask & IFCAP_VLAN_MTU) {
ECE_LOCK(sc);
ECE_UNLOCK(sc);
}
default:
error = ether_ioctl(ifp, cmd, data);
break;
}
return (error);
}
static void
ece_child_detached(device_t dev, device_t child)
{
struct ece_softc *sc;
sc = device_get_softc(dev);
if (child == sc->miibus)
sc->miibus = NULL;
}
/*
* MII bus support routines.
*/
static int
ece_miibus_readreg(device_t dev, int phy, int reg)
{
struct ece_softc *sc;
sc = device_get_softc(dev);
return (phy_read(sc, phy, reg));
}
static int
ece_miibus_writereg(device_t dev, int phy, int reg, int data)
{
struct ece_softc *sc;
sc = device_get_softc(dev);
phy_write(sc, phy, reg, data);
return (0);
}
static device_method_t ece_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ece_probe),
DEVMETHOD(device_attach, ece_attach),
DEVMETHOD(device_detach, ece_detach),
/* Bus interface */
DEVMETHOD(bus_child_detached, ece_child_detached),
/* MII interface */
DEVMETHOD(miibus_readreg, ece_miibus_readreg),
DEVMETHOD(miibus_writereg, ece_miibus_writereg),
{ 0, 0 }
};
static driver_t ece_driver = {
"ece",
ece_methods,
sizeof(struct ece_softc),
};
DRIVER_MODULE(ece, econaarm, ece_driver, ece_devclass, 0, 0);
DRIVER_MODULE(miibus, ece, miibus_driver, miibus_devclass, 0, 0);
MODULE_DEPEND(ece, miibus, 1, 1, 1);
MODULE_DEPEND(ece, ether, 1, 1, 1);
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