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freebsd-skq/sys/dev/bge/if_bge.c
des bfa67dd148 With ALTQ, it is possible that although the queue was not empty when we 
entered the interface start function, no packets were actually dequeued.
Therefore, keep a count of how many packets we really added onto the tx
chain, and initiate a transmit only if the count is non-zero.
2004-10-30 22:59:30 +00:00

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/*
* Copyright (c) 2001 Wind River Systems
* Copyright (c) 1997, 1998, 1999, 2001
* Bill Paul <wpaul@windriver.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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD
* 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("$FreeBSD$");
/*
* Broadcom BCM570x family gigabit ethernet driver for FreeBSD.
*
* The Broadcom BCM5700 is based on technology originally developed by
* Alteon Networks as part of the Tigon I and Tigon II gigabit ethernet
* MAC chips. The BCM5700, sometimes refered to as the Tigon III, has
* two on-board MIPS R4000 CPUs and can have as much as 16MB of external
* SSRAM. The BCM5700 supports TCP, UDP and IP checksum offload, jumbo
* frames, highly configurable RX filtering, and 16 RX and TX queues
* (which, along with RX filter rules, can be used for QOS applications).
* Other features, such as TCP segmentation, may be available as part
* of value-added firmware updates. Unlike the Tigon I and Tigon II,
* firmware images can be stored in hardware and need not be compiled
* into the driver.
*
* The BCM5700 supports the PCI v2.2 and PCI-X v1.0 standards, and will
* function in a 32-bit/64-bit 33/66Mhz bus, or a 64-bit/133Mhz bus.
*
* The BCM5701 is a single-chip solution incorporating both the BCM5700
* MAC and a BCM5401 10/100/1000 PHY. Unlike the BCM5700, the BCM5701
* does not support external SSRAM.
*
* Broadcom also produces a variation of the BCM5700 under the "Altima"
* brand name, which is functionally similar but lacks PCI-X support.
*
* Without external SSRAM, you can only have at most 4 TX rings,
* and the use of the mini RX ring is disabled. This seems to imply
* that these features are simply not available on the BCM5701. As a
* result, this driver does not implement any support for the mini RX
* ring.
*/
#include <sys/param.h>
#include <sys/endian.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/socket.h>
#include <sys/queue.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/bpf.h>
#include <net/if_types.h>
#include <net/if_vlan_var.h>
#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <machine/clock.h> /* for DELAY */
#include <machine/bus_memio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include "miidevs.h"
#include <dev/mii/brgphyreg.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/bge/if_bgereg.h>
#define BGE_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
MODULE_DEPEND(bge, pci, 1, 1, 1);
MODULE_DEPEND(bge, ether, 1, 1, 1);
MODULE_DEPEND(bge, miibus, 1, 1, 1);
/* "controller miibus0" required. See GENERIC if you get errors here. */
#include "miibus_if.h"
/*
* Various supported device vendors/types and their names. Note: the
* spec seems to indicate that the hardware still has Alteon's vendor
* ID burned into it, though it will always be overriden by the vendor
* ID in the EEPROM. Just to be safe, we cover all possibilities.
*/
#define BGE_DEVDESC_MAX 64 /* Maximum device description length */
static struct bge_type bge_devs[] = {
{ ALT_VENDORID, ALT_DEVICEID_BCM5700,
"Broadcom BCM5700 Gigabit Ethernet" },
{ ALT_VENDORID, ALT_DEVICEID_BCM5701,
"Broadcom BCM5701 Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5700,
"Broadcom BCM5700 Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5701,
"Broadcom BCM5701 Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5702,
"Broadcom BCM5702 Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5702X,
"Broadcom BCM5702X Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5703,
"Broadcom BCM5703 Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5703X,
"Broadcom BCM5703X Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5704C,
"Broadcom BCM5704C Dual Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5704S,
"Broadcom BCM5704S Dual Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5705,
"Broadcom BCM5705 Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5705K,
"Broadcom BCM5705K Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5705M,
"Broadcom BCM5705M Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5705M_ALT,
"Broadcom BCM5705M Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5750,
"Broadcom BCM5750 Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5750M,
"Broadcom BCM5750M Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5751,
"Broadcom BCM5751 Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5782,
"Broadcom BCM5782 Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5788,
"Broadcom BCM5788 Gigabit Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5901,
"Broadcom BCM5901 Fast Ethernet" },
{ BCOM_VENDORID, BCOM_DEVICEID_BCM5901A2,
"Broadcom BCM5901A2 Fast Ethernet" },
{ SK_VENDORID, SK_DEVICEID_ALTIMA,
"SysKonnect Gigabit Ethernet" },
{ ALTIMA_VENDORID, ALTIMA_DEVICE_AC1000,
"Altima AC1000 Gigabit Ethernet" },
{ ALTIMA_VENDORID, ALTIMA_DEVICE_AC1002,
"Altima AC1002 Gigabit Ethernet" },
{ ALTIMA_VENDORID, ALTIMA_DEVICE_AC9100,
"Altima AC9100 Gigabit Ethernet" },
{ 0, 0, NULL }
};
static int bge_probe (device_t);
static int bge_attach (device_t);
static int bge_detach (device_t);
static void bge_release_resources
(struct bge_softc *);
static void bge_dma_map_addr (void *, bus_dma_segment_t *, int, int);
static void bge_dma_map_tx_desc (void *, bus_dma_segment_t *, int,
bus_size_t, int);
static int bge_dma_alloc (device_t);
static void bge_dma_free (struct bge_softc *);
static void bge_txeof (struct bge_softc *);
static void bge_rxeof (struct bge_softc *);
static void bge_tick_locked (struct bge_softc *);
static void bge_tick (void *);
static void bge_stats_update (struct bge_softc *);
static void bge_stats_update_regs
(struct bge_softc *);
static int bge_encap (struct bge_softc *, struct mbuf *,
u_int32_t *);
static void bge_intr (void *);
static void bge_start_locked (struct ifnet *);
static void bge_start (struct ifnet *);
static int bge_ioctl (struct ifnet *, u_long, caddr_t);
static void bge_init_locked (struct bge_softc *);
static void bge_init (void *);
static void bge_stop (struct bge_softc *);
static void bge_watchdog (struct ifnet *);
static void bge_shutdown (device_t);
static int bge_ifmedia_upd (struct ifnet *);
static void bge_ifmedia_sts (struct ifnet *, struct ifmediareq *);
static u_int8_t bge_eeprom_getbyte (struct bge_softc *, int, u_int8_t *);
static int bge_read_eeprom (struct bge_softc *, caddr_t, int, int);
static void bge_setmulti (struct bge_softc *);
static void bge_handle_events (struct bge_softc *);
static int bge_alloc_jumbo_mem (struct bge_softc *);
static void bge_free_jumbo_mem (struct bge_softc *);
static void *bge_jalloc (struct bge_softc *);
static void bge_jfree (void *, void *);
static int bge_newbuf_std (struct bge_softc *, int, struct mbuf *);
static int bge_newbuf_jumbo (struct bge_softc *, int, struct mbuf *);
static int bge_init_rx_ring_std (struct bge_softc *);
static void bge_free_rx_ring_std (struct bge_softc *);
static int bge_init_rx_ring_jumbo (struct bge_softc *);
static void bge_free_rx_ring_jumbo (struct bge_softc *);
static void bge_free_tx_ring (struct bge_softc *);
static int bge_init_tx_ring (struct bge_softc *);
static int bge_chipinit (struct bge_softc *);
static int bge_blockinit (struct bge_softc *);
#ifdef notdef
static u_int8_t bge_vpd_readbyte(struct bge_softc *, int);
static void bge_vpd_read_res (struct bge_softc *, struct vpd_res *, int);
static void bge_vpd_read (struct bge_softc *);
#endif
static u_int32_t bge_readmem_ind
(struct bge_softc *, int);
static void bge_writemem_ind (struct bge_softc *, int, int);
#ifdef notdef
static u_int32_t bge_readreg_ind
(struct bge_softc *, int);
#endif
static void bge_writereg_ind (struct bge_softc *, int, int);
static int bge_miibus_readreg (device_t, int, int);
static int bge_miibus_writereg (device_t, int, int, int);
static void bge_miibus_statchg (device_t);
static void bge_reset (struct bge_softc *);
static device_method_t bge_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, bge_probe),
DEVMETHOD(device_attach, bge_attach),
DEVMETHOD(device_detach, bge_detach),
DEVMETHOD(device_shutdown, bge_shutdown),
/* bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_driver_added, bus_generic_driver_added),
/* MII interface */
DEVMETHOD(miibus_readreg, bge_miibus_readreg),
DEVMETHOD(miibus_writereg, bge_miibus_writereg),
DEVMETHOD(miibus_statchg, bge_miibus_statchg),
{ 0, 0 }
};
static driver_t bge_driver = {
"bge",
bge_methods,
sizeof(struct bge_softc)
};
static devclass_t bge_devclass;
DRIVER_MODULE(bge, pci, bge_driver, bge_devclass, 0, 0);
DRIVER_MODULE(miibus, bge, miibus_driver, miibus_devclass, 0, 0);
static u_int32_t
bge_readmem_ind(sc, off)
struct bge_softc *sc;
int off;
{
device_t dev;
dev = sc->bge_dev;
pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
return(pci_read_config(dev, BGE_PCI_MEMWIN_DATA, 4));
}
static void
bge_writemem_ind(sc, off, val)
struct bge_softc *sc;
int off, val;
{
device_t dev;
dev = sc->bge_dev;
pci_write_config(dev, BGE_PCI_MEMWIN_BASEADDR, off, 4);
pci_write_config(dev, BGE_PCI_MEMWIN_DATA, val, 4);
return;
}
#ifdef notdef
static u_int32_t
bge_readreg_ind(sc, off)
struct bge_softc *sc;
int off;
{
device_t dev;
dev = sc->bge_dev;
pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
return(pci_read_config(dev, BGE_PCI_REG_DATA, 4));
}
#endif
static void
bge_writereg_ind(sc, off, val)
struct bge_softc *sc;
int off, val;
{
device_t dev;
dev = sc->bge_dev;
pci_write_config(dev, BGE_PCI_REG_BASEADDR, off, 4);
pci_write_config(dev, BGE_PCI_REG_DATA, val, 4);
return;
}
/*
* Map a single buffer address.
*/
static void
bge_dma_map_addr(arg, segs, nseg, error)
void *arg;
bus_dma_segment_t *segs;
int nseg;
int error;
{
struct bge_dmamap_arg *ctx;
if (error)
return;
ctx = arg;
if (nseg > ctx->bge_maxsegs) {
ctx->bge_maxsegs = 0;
return;
}
ctx->bge_busaddr = segs->ds_addr;
return;
}
/*
* Map an mbuf chain into an TX ring.
*/
static void
bge_dma_map_tx_desc(arg, segs, nseg, mapsize, error)
void *arg;
bus_dma_segment_t *segs;
int nseg;
bus_size_t mapsize;
int error;
{
struct bge_dmamap_arg *ctx;
struct bge_tx_bd *d = NULL;
int i = 0, idx;
if (error)
return;
ctx = arg;
/* Signal error to caller if there's too many segments */
if (nseg > ctx->bge_maxsegs) {
ctx->bge_maxsegs = 0;
return;
}
idx = ctx->bge_idx;
while(1) {
d = &ctx->bge_ring[idx];
d->bge_addr.bge_addr_lo =
htole32(BGE_ADDR_LO(segs[i].ds_addr));
d->bge_addr.bge_addr_hi =
htole32(BGE_ADDR_HI(segs[i].ds_addr));
d->bge_len = htole16(segs[i].ds_len);
d->bge_flags = htole16(ctx->bge_flags);
i++;
if (i == nseg)
break;
BGE_INC(idx, BGE_TX_RING_CNT);
}
d->bge_flags |= htole16(BGE_TXBDFLAG_END);
ctx->bge_maxsegs = nseg;
ctx->bge_idx = idx;
return;
}
#ifdef notdef
static u_int8_t
bge_vpd_readbyte(sc, addr)
struct bge_softc *sc;
int addr;
{
int i;
device_t dev;
u_int32_t val;
dev = sc->bge_dev;
pci_write_config(dev, BGE_PCI_VPD_ADDR, addr, 2);
for (i = 0; i < BGE_TIMEOUT * 10; i++) {
DELAY(10);
if (pci_read_config(dev, BGE_PCI_VPD_ADDR, 2) & BGE_VPD_FLAG)
break;
}
if (i == BGE_TIMEOUT) {
printf("bge%d: VPD read timed out\n", sc->bge_unit);
return(0);
}
val = pci_read_config(dev, BGE_PCI_VPD_DATA, 4);
return((val >> ((addr % 4) * 8)) & 0xFF);
}
static void
bge_vpd_read_res(sc, res, addr)
struct bge_softc *sc;
struct vpd_res *res;
int addr;
{
int i;
u_int8_t *ptr;
ptr = (u_int8_t *)res;
for (i = 0; i < sizeof(struct vpd_res); i++)
ptr[i] = bge_vpd_readbyte(sc, i + addr);
return;
}
static void
bge_vpd_read(sc)
struct bge_softc *sc;
{
int pos = 0, i;
struct vpd_res res;
if (sc->bge_vpd_prodname != NULL)
free(sc->bge_vpd_prodname, M_DEVBUF);
if (sc->bge_vpd_readonly != NULL)
free(sc->bge_vpd_readonly, M_DEVBUF);
sc->bge_vpd_prodname = NULL;
sc->bge_vpd_readonly = NULL;
bge_vpd_read_res(sc, &res, pos);
if (res.vr_id != VPD_RES_ID) {
printf("bge%d: bad VPD resource id: expected %x got %x\n",
sc->bge_unit, VPD_RES_ID, res.vr_id);
return;
}
pos += sizeof(res);
sc->bge_vpd_prodname = malloc(res.vr_len + 1, M_DEVBUF, M_NOWAIT);
for (i = 0; i < res.vr_len; i++)
sc->bge_vpd_prodname[i] = bge_vpd_readbyte(sc, i + pos);
sc->bge_vpd_prodname[i] = '\0';
pos += i;
bge_vpd_read_res(sc, &res, pos);
if (res.vr_id != VPD_RES_READ) {
printf("bge%d: bad VPD resource id: expected %x got %x\n",
sc->bge_unit, VPD_RES_READ, res.vr_id);
return;
}
pos += sizeof(res);
sc->bge_vpd_readonly = malloc(res.vr_len, M_DEVBUF, M_NOWAIT);
for (i = 0; i < res.vr_len + 1; i++)
sc->bge_vpd_readonly[i] = bge_vpd_readbyte(sc, i + pos);
return;
}
#endif
/*
* Read a byte of data stored in the EEPROM at address 'addr.' The
* BCM570x supports both the traditional bitbang interface and an
* auto access interface for reading the EEPROM. We use the auto
* access method.
*/
static u_int8_t
bge_eeprom_getbyte(sc, addr, dest)
struct bge_softc *sc;
int addr;
u_int8_t *dest;
{
int i;
u_int32_t byte = 0;
/*
* Enable use of auto EEPROM access so we can avoid
* having to use the bitbang method.
*/
BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_AUTO_EEPROM);
/* Reset the EEPROM, load the clock period. */
CSR_WRITE_4(sc, BGE_EE_ADDR,
BGE_EEADDR_RESET|BGE_EEHALFCLK(BGE_HALFCLK_384SCL));
DELAY(20);
/* Issue the read EEPROM command. */
CSR_WRITE_4(sc, BGE_EE_ADDR, BGE_EE_READCMD | addr);
/* Wait for completion */
for(i = 0; i < BGE_TIMEOUT * 10; i++) {
DELAY(10);
if (CSR_READ_4(sc, BGE_EE_ADDR) & BGE_EEADDR_DONE)
break;
}
if (i == BGE_TIMEOUT) {
printf("bge%d: eeprom read timed out\n", sc->bge_unit);
return(0);
}
/* Get result. */
byte = CSR_READ_4(sc, BGE_EE_DATA);
*dest = (byte >> ((addr % 4) * 8)) & 0xFF;
return(0);
}
/*
* Read a sequence of bytes from the EEPROM.
*/
static int
bge_read_eeprom(sc, dest, off, cnt)
struct bge_softc *sc;
caddr_t dest;
int off;
int cnt;
{
int err = 0, i;
u_int8_t byte = 0;
for (i = 0; i < cnt; i++) {
err = bge_eeprom_getbyte(sc, off + i, &byte);
if (err)
break;
*(dest + i) = byte;
}
return(err ? 1 : 0);
}
static int
bge_miibus_readreg(dev, phy, reg)
device_t dev;
int phy, reg;
{
struct bge_softc *sc;
u_int32_t val, autopoll;
int i;
sc = device_get_softc(dev);
/*
* Broadcom's own driver always assumes the internal
* PHY is at GMII address 1. On some chips, the PHY responds
* to accesses at all addresses, which could cause us to
* bogusly attach the PHY 32 times at probe type. Always
* restricting the lookup to address 1 is simpler than
* trying to figure out which chips revisions should be
* special-cased.
*/
if (phy != 1)
return(0);
/* Reading with autopolling on may trigger PCI errors */
autopoll = CSR_READ_4(sc, BGE_MI_MODE);
if (autopoll & BGE_MIMODE_AUTOPOLL) {
BGE_CLRBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
DELAY(40);
}
CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_READ|BGE_MICOMM_BUSY|
BGE_MIPHY(phy)|BGE_MIREG(reg));
for (i = 0; i < BGE_TIMEOUT; i++) {
val = CSR_READ_4(sc, BGE_MI_COMM);
if (!(val & BGE_MICOMM_BUSY))
break;
}
if (i == BGE_TIMEOUT) {
printf("bge%d: PHY read timed out\n", sc->bge_unit);
val = 0;
goto done;
}
val = CSR_READ_4(sc, BGE_MI_COMM);
done:
if (autopoll & BGE_MIMODE_AUTOPOLL) {
BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
DELAY(40);
}
if (val & BGE_MICOMM_READFAIL)
return(0);
return(val & 0xFFFF);
}
static int
bge_miibus_writereg(dev, phy, reg, val)
device_t dev;
int phy, reg, val;
{
struct bge_softc *sc;
u_int32_t autopoll;
int i;
sc = device_get_softc(dev);
/* Reading with autopolling on may trigger PCI errors */
autopoll = CSR_READ_4(sc, BGE_MI_MODE);
if (autopoll & BGE_MIMODE_AUTOPOLL) {
BGE_CLRBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
DELAY(40);
}
CSR_WRITE_4(sc, BGE_MI_COMM, BGE_MICMD_WRITE|BGE_MICOMM_BUSY|
BGE_MIPHY(phy)|BGE_MIREG(reg)|val);
for (i = 0; i < BGE_TIMEOUT; i++) {
if (!(CSR_READ_4(sc, BGE_MI_COMM) & BGE_MICOMM_BUSY))
break;
}
if (autopoll & BGE_MIMODE_AUTOPOLL) {
BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL);
DELAY(40);
}
if (i == BGE_TIMEOUT) {
printf("bge%d: PHY read timed out\n", sc->bge_unit);
return(0);
}
return(0);
}
static void
bge_miibus_statchg(dev)
device_t dev;
{
struct bge_softc *sc;
struct mii_data *mii;
sc = device_get_softc(dev);
mii = device_get_softc(sc->bge_miibus);
BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_PORTMODE);
if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) {
BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_GMII);
} else {
BGE_SETBIT(sc, BGE_MAC_MODE, BGE_PORTMODE_MII);
}
if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) {
BGE_CLRBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
} else {
BGE_SETBIT(sc, BGE_MAC_MODE, BGE_MACMODE_HALF_DUPLEX);
}
return;
}
/*
* Handle events that have triggered interrupts.
*/
static void
bge_handle_events(sc)
struct bge_softc *sc;
{
return;
}
/*
* Memory management for jumbo frames.
*/
static int
bge_alloc_jumbo_mem(sc)
struct bge_softc *sc;
{
caddr_t ptr;
register int i, error;
struct bge_jpool_entry *entry;
/* Create tag for jumbo buffer block */
error = bus_dma_tag_create(sc->bge_cdata.bge_parent_tag,
PAGE_SIZE, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL,
NULL, BGE_JMEM, 1, BGE_JMEM, 0, NULL, NULL,
&sc->bge_cdata.bge_jumbo_tag);
if (error) {
printf("bge%d: could not allocate jumbo dma tag\n",
sc->bge_unit);
return (ENOMEM);
}
/* Allocate DMA'able memory for jumbo buffer block */
error = bus_dmamem_alloc(sc->bge_cdata.bge_jumbo_tag,
(void **)&sc->bge_ldata.bge_jumbo_buf, BUS_DMA_NOWAIT,
&sc->bge_cdata.bge_jumbo_map);
if (error)
return (ENOMEM);
SLIST_INIT(&sc->bge_jfree_listhead);
SLIST_INIT(&sc->bge_jinuse_listhead);
/*
* Now divide it up into 9K pieces and save the addresses
* in an array.
*/
ptr = sc->bge_ldata.bge_jumbo_buf;
for (i = 0; i < BGE_JSLOTS; i++) {
sc->bge_cdata.bge_jslots[i] = ptr;
ptr += BGE_JLEN;
entry = malloc(sizeof(struct bge_jpool_entry),
M_DEVBUF, M_NOWAIT);
if (entry == NULL) {
bge_free_jumbo_mem(sc);
sc->bge_ldata.bge_jumbo_buf = NULL;
printf("bge%d: no memory for jumbo "
"buffer queue!\n", sc->bge_unit);
return(ENOBUFS);
}
entry->slot = i;
SLIST_INSERT_HEAD(&sc->bge_jfree_listhead,
entry, jpool_entries);
}
return(0);
}
static void
bge_free_jumbo_mem(sc)
struct bge_softc *sc;
{
int i;
struct bge_jpool_entry *entry;
for (i = 0; i < BGE_JSLOTS; i++) {
entry = SLIST_FIRST(&sc->bge_jfree_listhead);
SLIST_REMOVE_HEAD(&sc->bge_jfree_listhead, jpool_entries);
free(entry, M_DEVBUF);
}
/* Destroy jumbo buffer block */
if (sc->bge_ldata.bge_rx_jumbo_ring)
bus_dmamem_free(sc->bge_cdata.bge_jumbo_tag,
sc->bge_ldata.bge_jumbo_buf,
sc->bge_cdata.bge_jumbo_map);
if (sc->bge_cdata.bge_rx_jumbo_ring_map)
bus_dmamap_destroy(sc->bge_cdata.bge_jumbo_tag,
sc->bge_cdata.bge_jumbo_map);
if (sc->bge_cdata.bge_jumbo_tag)
bus_dma_tag_destroy(sc->bge_cdata.bge_jumbo_tag);
return;
}
/*
* Allocate a jumbo buffer.
*/
static void *
bge_jalloc(sc)
struct bge_softc *sc;
{
struct bge_jpool_entry *entry;
entry = SLIST_FIRST(&sc->bge_jfree_listhead);
if (entry == NULL) {
printf("bge%d: no free jumbo buffers\n", sc->bge_unit);
return(NULL);
}
SLIST_REMOVE_HEAD(&sc->bge_jfree_listhead, jpool_entries);
SLIST_INSERT_HEAD(&sc->bge_jinuse_listhead, entry, jpool_entries);
return(sc->bge_cdata.bge_jslots[entry->slot]);
}
/*
* Release a jumbo buffer.
*/
static void
bge_jfree(buf, args)
void *buf;
void *args;
{
struct bge_jpool_entry *entry;
struct bge_softc *sc;
int i;
/* Extract the softc struct pointer. */
sc = (struct bge_softc *)args;
if (sc == NULL)
panic("bge_jfree: can't find softc pointer!");
/* calculate the slot this buffer belongs to */
i = ((vm_offset_t)buf
- (vm_offset_t)sc->bge_ldata.bge_jumbo_buf) / BGE_JLEN;
if ((i < 0) || (i >= BGE_JSLOTS))
panic("bge_jfree: asked to free buffer that we don't manage!");
entry = SLIST_FIRST(&sc->bge_jinuse_listhead);
if (entry == NULL)
panic("bge_jfree: buffer not in use!");
entry->slot = i;
SLIST_REMOVE_HEAD(&sc->bge_jinuse_listhead, jpool_entries);
SLIST_INSERT_HEAD(&sc->bge_jfree_listhead, entry, jpool_entries);
return;
}
/*
* Intialize a standard receive ring descriptor.
*/
static int
bge_newbuf_std(sc, i, m)
struct bge_softc *sc;
int i;
struct mbuf *m;
{
struct mbuf *m_new = NULL;
struct bge_rx_bd *r;
struct bge_dmamap_arg ctx;
int error;
if (m == NULL) {
MGETHDR(m_new, M_DONTWAIT, MT_DATA);
if (m_new == NULL) {
return(ENOBUFS);
}
MCLGET(m_new, M_DONTWAIT);
if (!(m_new->m_flags & M_EXT)) {
m_freem(m_new);
return(ENOBUFS);
}
m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
} else {
m_new = m;
m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
m_new->m_data = m_new->m_ext.ext_buf;
}
if (!sc->bge_rx_alignment_bug)
m_adj(m_new, ETHER_ALIGN);
sc->bge_cdata.bge_rx_std_chain[i] = m_new;
r = &sc->bge_ldata.bge_rx_std_ring[i];
ctx.bge_maxsegs = 1;
ctx.sc = sc;
error = bus_dmamap_load(sc->bge_cdata.bge_mtag,
sc->bge_cdata.bge_rx_std_dmamap[i], mtod(m_new, void *),
m_new->m_len, bge_dma_map_addr, &ctx, BUS_DMA_NOWAIT);
if (error || ctx.bge_maxsegs == 0) {
if (m == NULL)
m_freem(m_new);
return(ENOMEM);
}
r->bge_addr.bge_addr_lo = htole32(BGE_ADDR_LO(ctx.bge_busaddr));
r->bge_addr.bge_addr_hi = htole32(BGE_ADDR_HI(ctx.bge_busaddr));
r->bge_flags = htole16(BGE_RXBDFLAG_END);
r->bge_len = htole16(m_new->m_len);
r->bge_idx = htole16(i);
bus_dmamap_sync(sc->bge_cdata.bge_mtag,
sc->bge_cdata.bge_rx_std_dmamap[i],
BUS_DMASYNC_PREREAD);
return(0);
}
/*
* Initialize a jumbo receive ring descriptor. This allocates
* a jumbo buffer from the pool managed internally by the driver.
*/
static int
bge_newbuf_jumbo(sc, i, m)
struct bge_softc *sc;
int i;
struct mbuf *m;
{
struct mbuf *m_new = NULL;
struct bge_rx_bd *r;
struct bge_dmamap_arg ctx;
int error;
if (m == NULL) {
caddr_t *buf = NULL;
/* Allocate the mbuf. */
MGETHDR(m_new, M_DONTWAIT, MT_DATA);
if (m_new == NULL) {
return(ENOBUFS);
}
/* Allocate the jumbo buffer */
buf = bge_jalloc(sc);
if (buf == NULL) {
m_freem(m_new);
printf("bge%d: jumbo allocation failed "
"-- packet dropped!\n", sc->bge_unit);
return(ENOBUFS);
}
/* Attach the buffer to the mbuf. */
m_new->m_data = (void *) buf;
m_new->m_len = m_new->m_pkthdr.len = BGE_JUMBO_FRAMELEN;
MEXTADD(m_new, buf, BGE_JUMBO_FRAMELEN, bge_jfree,
(struct bge_softc *)sc, 0, EXT_NET_DRV);
} else {
m_new = m;
m_new->m_data = m_new->m_ext.ext_buf;
m_new->m_ext.ext_size = BGE_JUMBO_FRAMELEN;
}
if (!sc->bge_rx_alignment_bug)
m_adj(m_new, ETHER_ALIGN);
/* Set up the descriptor. */
sc->bge_cdata.bge_rx_jumbo_chain[i] = m_new;
r = &sc->bge_ldata.bge_rx_jumbo_ring[i];
ctx.bge_maxsegs = 1;
ctx.sc = sc;
error = bus_dmamap_load(sc->bge_cdata.bge_mtag_jumbo,
sc->bge_cdata.bge_rx_jumbo_dmamap[i], mtod(m_new, void *),
m_new->m_len, bge_dma_map_addr, &ctx, BUS_DMA_NOWAIT);
if (error || ctx.bge_maxsegs == 0) {
if (m == NULL)
m_freem(m_new);
return(ENOMEM);
}
r->bge_addr.bge_addr_lo = htole32(BGE_ADDR_LO(ctx.bge_busaddr));
r->bge_addr.bge_addr_hi = htole32(BGE_ADDR_HI(ctx.bge_busaddr));
r->bge_flags = htole16(BGE_RXBDFLAG_END|BGE_RXBDFLAG_JUMBO_RING);
r->bge_len = htole16(m_new->m_len);
r->bge_idx = htole16(i);
bus_dmamap_sync(sc->bge_cdata.bge_mtag,
sc->bge_cdata.bge_rx_jumbo_dmamap[i],
BUS_DMASYNC_PREREAD);
return(0);
}
/*
* The standard receive ring has 512 entries in it. At 2K per mbuf cluster,
* that's 1MB or memory, which is a lot. For now, we fill only the first
* 256 ring entries and hope that our CPU is fast enough to keep up with
* the NIC.
*/
static int
bge_init_rx_ring_std(sc)
struct bge_softc *sc;
{
int i;
for (i = 0; i < BGE_SSLOTS; i++) {
if (bge_newbuf_std(sc, i, NULL) == ENOBUFS)
return(ENOBUFS);
};
bus_dmamap_sync(sc->bge_cdata.bge_rx_std_ring_tag,
sc->bge_cdata.bge_rx_std_ring_map,
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
sc->bge_std = i - 1;
CSR_WRITE_4(sc, BGE_MBX_RX_STD_PROD_LO, sc->bge_std);
return(0);
}
static void
bge_free_rx_ring_std(sc)
struct bge_softc *sc;
{
int i;
for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
if (sc->bge_cdata.bge_rx_std_chain[i] != NULL) {
m_freem(sc->bge_cdata.bge_rx_std_chain[i]);
sc->bge_cdata.bge_rx_std_chain[i] = NULL;
bus_dmamap_unload(sc->bge_cdata.bge_mtag,
sc->bge_cdata.bge_rx_std_dmamap[i]);
}
bzero((char *)&sc->bge_ldata.bge_rx_std_ring[i],
sizeof(struct bge_rx_bd));
}
return;
}
static int
bge_init_rx_ring_jumbo(sc)
struct bge_softc *sc;
{
int i;
struct bge_rcb *rcb;
for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
if (bge_newbuf_jumbo(sc, i, NULL) == ENOBUFS)
return(ENOBUFS);
};
bus_dmamap_sync(sc->bge_cdata.bge_rx_jumbo_ring_tag,
sc->bge_cdata.bge_rx_jumbo_ring_map,
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
sc->bge_jumbo = i - 1;
rcb = &sc->bge_ldata.bge_info.bge_jumbo_rx_rcb;
rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(0, 0);
CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
CSR_WRITE_4(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bge_jumbo);
return(0);
}
static void
bge_free_rx_ring_jumbo(sc)
struct bge_softc *sc;
{
int i;
for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
if (sc->bge_cdata.bge_rx_jumbo_chain[i] != NULL) {
m_freem(sc->bge_cdata.bge_rx_jumbo_chain[i]);
sc->bge_cdata.bge_rx_jumbo_chain[i] = NULL;
bus_dmamap_unload(sc->bge_cdata.bge_mtag_jumbo,
sc->bge_cdata.bge_rx_jumbo_dmamap[i]);
}
bzero((char *)&sc->bge_ldata.bge_rx_jumbo_ring[i],
sizeof(struct bge_rx_bd));
}
return;
}
static void
bge_free_tx_ring(sc)
struct bge_softc *sc;
{
int i;
if (sc->bge_ldata.bge_tx_ring == NULL)
return;
for (i = 0; i < BGE_TX_RING_CNT; i++) {
if (sc->bge_cdata.bge_tx_chain[i] != NULL) {
m_freem(sc->bge_cdata.bge_tx_chain[i]);
sc->bge_cdata.bge_tx_chain[i] = NULL;
bus_dmamap_unload(sc->bge_cdata.bge_mtag,
sc->bge_cdata.bge_tx_dmamap[i]);
}
bzero((char *)&sc->bge_ldata.bge_tx_ring[i],
sizeof(struct bge_tx_bd));
}
return;
}
static int
bge_init_tx_ring(sc)
struct bge_softc *sc;
{
sc->bge_txcnt = 0;
sc->bge_tx_saved_considx = 0;
CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, 0);
/* 5700 b2 errata */
if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, 0);
CSR_WRITE_4(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
/* 5700 b2 errata */
if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
CSR_WRITE_4(sc, BGE_MBX_TX_NIC_PROD0_LO, 0);
return(0);
}
static void
bge_setmulti(sc)
struct bge_softc *sc;
{
struct ifnet *ifp;
struct ifmultiaddr *ifma;
u_int32_t hashes[4] = { 0, 0, 0, 0 };
int h, i;
BGE_LOCK_ASSERT(sc);
ifp = &sc->arpcom.ac_if;
if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
for (i = 0; i < 4; i++)
CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0xFFFFFFFF);
return;
}
/* First, zot all the existing filters. */
for (i = 0; i < 4; i++)
CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), 0);
/* Now program new ones. */
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
h = ether_crc32_le(LLADDR((struct sockaddr_dl *)
ifma->ifma_addr), ETHER_ADDR_LEN) & 0x7F;
hashes[(h & 0x60) >> 5] |= 1 << (h & 0x1F);
}
for (i = 0; i < 4; i++)
CSR_WRITE_4(sc, BGE_MAR0 + (i * 4), hashes[i]);
return;
}
/*
* Do endian, PCI and DMA initialization. Also check the on-board ROM
* self-test results.
*/
static int
bge_chipinit(sc)
struct bge_softc *sc;
{
int i;
u_int32_t dma_rw_ctl;
/* Set endianness before we access any non-PCI registers. */
#if BYTE_ORDER == BIG_ENDIAN
pci_write_config(sc->bge_dev, BGE_PCI_MISC_CTL,
BGE_BIGENDIAN_INIT, 4);
#else
pci_write_config(sc->bge_dev, BGE_PCI_MISC_CTL,
BGE_LITTLEENDIAN_INIT, 4);
#endif
/*
* Check the 'ROM failed' bit on the RX CPU to see if
* self-tests passed.
*/
if (CSR_READ_4(sc, BGE_RXCPU_MODE) & BGE_RXCPUMODE_ROMFAIL) {
printf("bge%d: RX CPU self-diagnostics failed!\n",
sc->bge_unit);
return(ENODEV);
}
/* Clear the MAC control register */
CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
/*
* Clear the MAC statistics block in the NIC's
* internal memory.
*/
for (i = BGE_STATS_BLOCK;
i < BGE_STATS_BLOCK_END + 1; i += sizeof(u_int32_t))
BGE_MEMWIN_WRITE(sc, i, 0);
for (i = BGE_STATUS_BLOCK;
i < BGE_STATUS_BLOCK_END + 1; i += sizeof(u_int32_t))
BGE_MEMWIN_WRITE(sc, i, 0);
/* Set up the PCI DMA control register. */
if (sc->bge_pcie) {
dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
(0xf << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
(0x2 << BGE_PCIDMARWCTL_WR_WAT_SHIFT);
} else if (pci_read_config(sc->bge_dev, BGE_PCI_PCISTATE, 4) &
BGE_PCISTATE_PCI_BUSMODE) {
/* Conventional PCI bus */
dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
(0x7 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
(0x7 << BGE_PCIDMARWCTL_WR_WAT_SHIFT) |
(0x0F);
} else {
/* PCI-X bus */
/*
* The 5704 uses a different encoding of read/write
* watermarks.
*/
if (sc->bge_asicrev == BGE_ASICREV_BCM5704)
dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
(0x7 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
(0x3 << BGE_PCIDMARWCTL_WR_WAT_SHIFT);
else
dma_rw_ctl = BGE_PCI_READ_CMD|BGE_PCI_WRITE_CMD |
(0x3 << BGE_PCIDMARWCTL_RD_WAT_SHIFT) |
(0x3 << BGE_PCIDMARWCTL_WR_WAT_SHIFT) |
(0x0F);
/*
* 5703 and 5704 need ONEDMA_AT_ONCE as a workaround
* for hardware bugs.
*/
if (sc->bge_asicrev == BGE_ASICREV_BCM5703 ||
sc->bge_asicrev == BGE_ASICREV_BCM5704) {
u_int32_t tmp;
tmp = CSR_READ_4(sc, BGE_PCI_CLKCTL) & 0x1f;
if (tmp == 0x6 || tmp == 0x7)
dma_rw_ctl |= BGE_PCIDMARWCTL_ONEDMA_ATONCE;
}
}
if (sc->bge_asicrev == BGE_ASICREV_BCM5703 ||
sc->bge_asicrev == BGE_ASICREV_BCM5704 ||
sc->bge_asicrev == BGE_ASICREV_BCM5705 ||
sc->bge_asicrev == BGE_ASICREV_BCM5750)
dma_rw_ctl &= ~BGE_PCIDMARWCTL_MINDMA;
pci_write_config(sc->bge_dev, BGE_PCI_DMA_RW_CTL, dma_rw_ctl, 4);
/*
* Set up general mode register.
*/
CSR_WRITE_4(sc, BGE_MODE_CTL, BGE_MODECTL_WORDSWAP_NONFRAME|
BGE_MODECTL_BYTESWAP_DATA|BGE_MODECTL_WORDSWAP_DATA|
BGE_MODECTL_MAC_ATTN_INTR|BGE_MODECTL_HOST_SEND_BDS|
BGE_MODECTL_TX_NO_PHDR_CSUM|BGE_MODECTL_RX_NO_PHDR_CSUM);
/*
* Disable memory write invalidate. Apparently it is not supported
* properly by these devices.
*/
PCI_CLRBIT(sc->bge_dev, BGE_PCI_CMD, PCIM_CMD_MWIEN, 4);
#ifdef __brokenalpha__
/*
* Must insure that we do not cross an 8K (bytes) boundary
* for DMA reads. Our highest limit is 1K bytes. This is a
* restriction on some ALPHA platforms with early revision
* 21174 PCI chipsets, such as the AlphaPC 164lx
*/
PCI_SETBIT(sc->bge_dev, BGE_PCI_DMA_RW_CTL,
BGE_PCI_READ_BNDRY_1024BYTES, 4);
#endif
/* Set the timer prescaler (always 66Mhz) */
CSR_WRITE_4(sc, BGE_MISC_CFG, 65 << 1/*BGE_32BITTIME_66MHZ*/);
return(0);
}
static int
bge_blockinit(sc)
struct bge_softc *sc;
{
struct bge_rcb *rcb;
volatile struct bge_rcb *vrcb;
int i;
/*
* Initialize the memory window pointer register so that
* we can access the first 32K of internal NIC RAM. This will
* allow us to set up the TX send ring RCBs and the RX return
* ring RCBs, plus other things which live in NIC memory.
*/
CSR_WRITE_4(sc, BGE_PCI_MEMWIN_BASEADDR, 0);
/* Note: the BCM5704 has a smaller mbuf space than other chips. */
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750) {
/* Configure mbuf memory pool */
if (sc->bge_extram) {
CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_BASEADDR,
BGE_EXT_SSRAM);
if (sc->bge_asicrev == BGE_ASICREV_BCM5704)
CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x10000);
else
CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x18000);
} else {
CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_BASEADDR,
BGE_BUFFPOOL_1);
if (sc->bge_asicrev == BGE_ASICREV_BCM5704)
CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x10000);
else
CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_LEN, 0x18000);
}
/* Configure DMA resource pool */
CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_BASEADDR,
BGE_DMA_DESCRIPTORS);
CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LEN, 0x2000);
}
/* Configure mbuf pool watermarks */
if (sc->bge_asicrev == BGE_ASICREV_BCM5705 ||
sc->bge_asicrev == BGE_ASICREV_BCM5750) {
CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x0);
CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x10);
} else {
CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_READDMA_LOWAT, 0x50);
CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_MACRX_LOWAT, 0x20);
}
CSR_WRITE_4(sc, BGE_BMAN_MBUFPOOL_HIWAT, 0x60);
/* Configure DMA resource watermarks */
CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_LOWAT, 5);
CSR_WRITE_4(sc, BGE_BMAN_DMA_DESCPOOL_HIWAT, 10);
/* Enable buffer manager */
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750) {
CSR_WRITE_4(sc, BGE_BMAN_MODE,
BGE_BMANMODE_ENABLE|BGE_BMANMODE_LOMBUF_ATTN);
/* Poll for buffer manager start indication */
for (i = 0; i < BGE_TIMEOUT; i++) {
if (CSR_READ_4(sc, BGE_BMAN_MODE) & BGE_BMANMODE_ENABLE)
break;
DELAY(10);
}
if (i == BGE_TIMEOUT) {
printf("bge%d: buffer manager failed to start\n",
sc->bge_unit);
return(ENXIO);
}
}
/* Enable flow-through queues */
CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
/* Wait until queue initialization is complete */
for (i = 0; i < BGE_TIMEOUT; i++) {
if (CSR_READ_4(sc, BGE_FTQ_RESET) == 0)
break;
DELAY(10);
}
if (i == BGE_TIMEOUT) {
printf("bge%d: flow-through queue init failed\n",
sc->bge_unit);
return(ENXIO);
}
/* Initialize the standard RX ring control block */
rcb = &sc->bge_ldata.bge_info.bge_std_rx_rcb;
rcb->bge_hostaddr.bge_addr_lo =
BGE_ADDR_LO(sc->bge_ldata.bge_rx_std_ring_paddr);
rcb->bge_hostaddr.bge_addr_hi =
BGE_ADDR_HI(sc->bge_ldata.bge_rx_std_ring_paddr);
bus_dmamap_sync(sc->bge_cdata.bge_rx_std_ring_tag,
sc->bge_cdata.bge_rx_std_ring_map, BUS_DMASYNC_PREREAD);
if (sc->bge_asicrev == BGE_ASICREV_BCM5705 ||
sc->bge_asicrev == BGE_ASICREV_BCM5750)
rcb->bge_maxlen_flags = BGE_RCB_MAXLEN_FLAGS(512, 0);
else
rcb->bge_maxlen_flags =
BGE_RCB_MAXLEN_FLAGS(BGE_MAX_FRAMELEN, 0);
if (sc->bge_extram)
rcb->bge_nicaddr = BGE_EXT_STD_RX_RINGS;
else
rcb->bge_nicaddr = BGE_STD_RX_RINGS;
CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_HI, rcb->bge_hostaddr.bge_addr_hi);
CSR_WRITE_4(sc, BGE_RX_STD_RCB_HADDR_LO, rcb->bge_hostaddr.bge_addr_lo);
CSR_WRITE_4(sc, BGE_RX_STD_RCB_MAXLEN_FLAGS, rcb->bge_maxlen_flags);
CSR_WRITE_4(sc, BGE_RX_STD_RCB_NICADDR, rcb->bge_nicaddr);
/*
* Initialize the jumbo RX ring control block
* We set the 'ring disabled' bit in the flags
* field until we're actually ready to start
* using this ring (i.e. once we set the MTU
* high enough to require it).
*/
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750) {
rcb = &sc->bge_ldata.bge_info.bge_jumbo_rx_rcb;
rcb->bge_hostaddr.bge_addr_lo =
BGE_ADDR_LO(sc->bge_ldata.bge_rx_jumbo_ring_paddr);
rcb->bge_hostaddr.bge_addr_hi =
BGE_ADDR_HI(sc->bge_ldata.bge_rx_jumbo_ring_paddr);
bus_dmamap_sync(sc->bge_cdata.bge_rx_jumbo_ring_tag,
sc->bge_cdata.bge_rx_jumbo_ring_map,
BUS_DMASYNC_PREREAD);
rcb->bge_maxlen_flags =
BGE_RCB_MAXLEN_FLAGS(BGE_MAX_FRAMELEN,
BGE_RCB_FLAG_RING_DISABLED);
if (sc->bge_extram)
rcb->bge_nicaddr = BGE_EXT_JUMBO_RX_RINGS;
else
rcb->bge_nicaddr = BGE_JUMBO_RX_RINGS;
CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_HI,
rcb->bge_hostaddr.bge_addr_hi);
CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_HADDR_LO,
rcb->bge_hostaddr.bge_addr_lo);
CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_MAXLEN_FLAGS,
rcb->bge_maxlen_flags);
CSR_WRITE_4(sc, BGE_RX_JUMBO_RCB_NICADDR, rcb->bge_nicaddr);
/* Set up dummy disabled mini ring RCB */
rcb = &sc->bge_ldata.bge_info.bge_mini_rx_rcb;
rcb->bge_maxlen_flags =
BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED);
CSR_WRITE_4(sc, BGE_RX_MINI_RCB_MAXLEN_FLAGS,
rcb->bge_maxlen_flags);
}
/*
* Set the BD ring replentish thresholds. The recommended
* values are 1/8th the number of descriptors allocated to
* each ring.
*/
CSR_WRITE_4(sc, BGE_RBDI_STD_REPL_THRESH, BGE_STD_RX_RING_CNT/8);
CSR_WRITE_4(sc, BGE_RBDI_JUMBO_REPL_THRESH, BGE_JUMBO_RX_RING_CNT/8);
/*
* Disable all unused send rings by setting the 'ring disabled'
* bit in the flags field of all the TX send ring control blocks.
* These are located in NIC memory.
*/
vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
BGE_SEND_RING_RCB);
for (i = 0; i < BGE_TX_RINGS_EXTSSRAM_MAX; i++) {
vrcb->bge_maxlen_flags =
BGE_RCB_MAXLEN_FLAGS(0, BGE_RCB_FLAG_RING_DISABLED);
vrcb->bge_nicaddr = 0;
vrcb++;
}
/* Configure TX RCB 0 (we use only the first ring) */
vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
BGE_SEND_RING_RCB);
vrcb->bge_hostaddr.bge_addr_lo =
htole32(BGE_ADDR_LO(sc->bge_ldata.bge_tx_ring_paddr));
vrcb->bge_hostaddr.bge_addr_hi =
htole32(BGE_ADDR_HI(sc->bge_ldata.bge_tx_ring_paddr));
vrcb->bge_nicaddr = BGE_NIC_TXRING_ADDR(0, BGE_TX_RING_CNT);
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750)
vrcb->bge_maxlen_flags =
BGE_RCB_MAXLEN_FLAGS(BGE_TX_RING_CNT, 0);
/* Disable all unused RX return rings */
vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
BGE_RX_RETURN_RING_RCB);
for (i = 0; i < BGE_RX_RINGS_MAX; i++) {
vrcb->bge_hostaddr.bge_addr_hi = 0;
vrcb->bge_hostaddr.bge_addr_lo = 0;
vrcb->bge_maxlen_flags =
BGE_RCB_MAXLEN_FLAGS(sc->bge_return_ring_cnt,
BGE_RCB_FLAG_RING_DISABLED);
vrcb->bge_nicaddr = 0;
CSR_WRITE_4(sc, BGE_MBX_RX_CONS0_LO +
(i * (sizeof(u_int64_t))), 0);
vrcb++;
}
/* Initialize RX ring indexes */
CSR_WRITE_4(sc, BGE_MBX_RX_STD_PROD_LO, 0);
CSR_WRITE_4(sc, BGE_MBX_RX_JUMBO_PROD_LO, 0);
CSR_WRITE_4(sc, BGE_MBX_RX_MINI_PROD_LO, 0);
/*
* Set up RX return ring 0
* Note that the NIC address for RX return rings is 0x00000000.
* The return rings live entirely within the host, so the
* nicaddr field in the RCB isn't used.
*/
vrcb = (volatile struct bge_rcb *)(sc->bge_vhandle + BGE_MEMWIN_START +
BGE_RX_RETURN_RING_RCB);
vrcb->bge_hostaddr.bge_addr_lo =
BGE_ADDR_LO(sc->bge_ldata.bge_rx_return_ring_paddr);
vrcb->bge_hostaddr.bge_addr_hi =
BGE_ADDR_HI(sc->bge_ldata.bge_rx_return_ring_paddr);
bus_dmamap_sync(sc->bge_cdata.bge_rx_return_ring_tag,
sc->bge_cdata.bge_rx_return_ring_map, BUS_DMASYNC_PREWRITE);
vrcb->bge_nicaddr = 0x00000000;
vrcb->bge_maxlen_flags =
BGE_RCB_MAXLEN_FLAGS(sc->bge_return_ring_cnt, 0);
/* Set random backoff seed for TX */
CSR_WRITE_4(sc, BGE_TX_RANDOM_BACKOFF,
sc->arpcom.ac_enaddr[0] + sc->arpcom.ac_enaddr[1] +
sc->arpcom.ac_enaddr[2] + sc->arpcom.ac_enaddr[3] +
sc->arpcom.ac_enaddr[4] + sc->arpcom.ac_enaddr[5] +
BGE_TX_BACKOFF_SEED_MASK);
/* Set inter-packet gap */
CSR_WRITE_4(sc, BGE_TX_LENGTHS, 0x2620);
/*
* Specify which ring to use for packets that don't match
* any RX rules.
*/
CSR_WRITE_4(sc, BGE_RX_RULES_CFG, 0x08);
/*
* Configure number of RX lists. One interrupt distribution
* list, sixteen active lists, one bad frames class.
*/
CSR_WRITE_4(sc, BGE_RXLP_CFG, 0x181);
/* Inialize RX list placement stats mask. */
CSR_WRITE_4(sc, BGE_RXLP_STATS_ENABLE_MASK, 0x007FFFFF);
CSR_WRITE_4(sc, BGE_RXLP_STATS_CTL, 0x1);
/* Disable host coalescing until we get it set up */
CSR_WRITE_4(sc, BGE_HCC_MODE, 0x00000000);
/* Poll to make sure it's shut down. */
for (i = 0; i < BGE_TIMEOUT; i++) {
if (!(CSR_READ_4(sc, BGE_HCC_MODE) & BGE_HCCMODE_ENABLE))
break;
DELAY(10);
}
if (i == BGE_TIMEOUT) {
printf("bge%d: host coalescing engine failed to idle\n",
sc->bge_unit);
return(ENXIO);
}
/* Set up host coalescing defaults */
CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS, sc->bge_rx_coal_ticks);
CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS, sc->bge_tx_coal_ticks);
CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS, sc->bge_rx_max_coal_bds);
CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS, sc->bge_tx_max_coal_bds);
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750) {
CSR_WRITE_4(sc, BGE_HCC_RX_COAL_TICKS_INT, 0);
CSR_WRITE_4(sc, BGE_HCC_TX_COAL_TICKS_INT, 0);
}
CSR_WRITE_4(sc, BGE_HCC_RX_MAX_COAL_BDS_INT, 0);
CSR_WRITE_4(sc, BGE_HCC_TX_MAX_COAL_BDS_INT, 0);
/* Set up address of statistics block */
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750) {
CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_HI,
BGE_ADDR_HI(sc->bge_ldata.bge_stats_paddr));
CSR_WRITE_4(sc, BGE_HCC_STATS_ADDR_LO,
BGE_ADDR_LO(sc->bge_ldata.bge_stats_paddr));
CSR_WRITE_4(sc, BGE_HCC_STATS_BASEADDR, BGE_STATS_BLOCK);
CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_BASEADDR, BGE_STATUS_BLOCK);
CSR_WRITE_4(sc, BGE_HCC_STATS_TICKS, sc->bge_stat_ticks);
}
/* Set up address of status block */
CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_HI,
BGE_ADDR_HI(sc->bge_ldata.bge_status_block_paddr));
CSR_WRITE_4(sc, BGE_HCC_STATUSBLK_ADDR_LO,
BGE_ADDR_LO(sc->bge_ldata.bge_status_block_paddr));
bus_dmamap_sync(sc->bge_cdata.bge_status_tag,
sc->bge_cdata.bge_status_map, BUS_DMASYNC_PREWRITE);
sc->bge_ldata.bge_status_block->bge_idx[0].bge_rx_prod_idx = 0;
sc->bge_ldata.bge_status_block->bge_idx[0].bge_tx_cons_idx = 0;
/* Turn on host coalescing state machine */
CSR_WRITE_4(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE);
/* Turn on RX BD completion state machine and enable attentions */
CSR_WRITE_4(sc, BGE_RBDC_MODE,
BGE_RBDCMODE_ENABLE|BGE_RBDCMODE_ATTN);
/* Turn on RX list placement state machine */
CSR_WRITE_4(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
/* Turn on RX list selector state machine. */
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750)
CSR_WRITE_4(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE);
/* Turn on DMA, clear stats */
CSR_WRITE_4(sc, BGE_MAC_MODE, BGE_MACMODE_TXDMA_ENB|
BGE_MACMODE_RXDMA_ENB|BGE_MACMODE_RX_STATS_CLEAR|
BGE_MACMODE_TX_STATS_CLEAR|BGE_MACMODE_RX_STATS_ENB|
BGE_MACMODE_TX_STATS_ENB|BGE_MACMODE_FRMHDR_DMA_ENB|
(sc->bge_tbi ? BGE_PORTMODE_TBI : BGE_PORTMODE_MII));
/* Set misc. local control, enable interrupts on attentions */
CSR_WRITE_4(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_INTR_ONATTN);
#ifdef notdef
/* Assert GPIO pins for PHY reset */
BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUT0|
BGE_MLC_MISCIO_OUT1|BGE_MLC_MISCIO_OUT2);
BGE_SETBIT(sc, BGE_MISC_LOCAL_CTL, BGE_MLC_MISCIO_OUTEN0|
BGE_MLC_MISCIO_OUTEN1|BGE_MLC_MISCIO_OUTEN2);
#endif
/* Turn on DMA completion state machine */
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750)
CSR_WRITE_4(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE);
/* Turn on write DMA state machine */
CSR_WRITE_4(sc, BGE_WDMA_MODE,
BGE_WDMAMODE_ENABLE|BGE_WDMAMODE_ALL_ATTNS);
/* Turn on read DMA state machine */
CSR_WRITE_4(sc, BGE_RDMA_MODE,
BGE_RDMAMODE_ENABLE|BGE_RDMAMODE_ALL_ATTNS);
/* Turn on RX data completion state machine */
CSR_WRITE_4(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
/* Turn on RX BD initiator state machine */
CSR_WRITE_4(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
/* Turn on RX data and RX BD initiator state machine */
CSR_WRITE_4(sc, BGE_RDBDI_MODE, BGE_RDBDIMODE_ENABLE);
/* Turn on Mbuf cluster free state machine */
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750)
CSR_WRITE_4(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE);
/* Turn on send BD completion state machine */
CSR_WRITE_4(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
/* Turn on send data completion state machine */
CSR_WRITE_4(sc, BGE_SDC_MODE, BGE_SDCMODE_ENABLE);
/* Turn on send data initiator state machine */
CSR_WRITE_4(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
/* Turn on send BD initiator state machine */
CSR_WRITE_4(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
/* Turn on send BD selector state machine */
CSR_WRITE_4(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
CSR_WRITE_4(sc, BGE_SDI_STATS_ENABLE_MASK, 0x007FFFFF);
CSR_WRITE_4(sc, BGE_SDI_STATS_CTL,
BGE_SDISTATSCTL_ENABLE|BGE_SDISTATSCTL_FASTER);
/* ack/clear link change events */
CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
BGE_MACSTAT_LINK_CHANGED);
CSR_WRITE_4(sc, BGE_MI_STS, 0);
/* Enable PHY auto polling (for MII/GMII only) */
if (sc->bge_tbi) {
CSR_WRITE_4(sc, BGE_MI_STS, BGE_MISTS_LINK);
} else {
BGE_SETBIT(sc, BGE_MI_MODE, BGE_MIMODE_AUTOPOLL|10<<16);
if (sc->bge_asicrev == BGE_ASICREV_BCM5700)
CSR_WRITE_4(sc, BGE_MAC_EVT_ENB,
BGE_EVTENB_MI_INTERRUPT);
}
/* Enable link state change attentions. */
BGE_SETBIT(sc, BGE_MAC_EVT_ENB, BGE_EVTENB_LINK_CHANGED);
return(0);
}
/*
* Probe for a Broadcom chip. Check the PCI vendor and device IDs
* against our list and return its name if we find a match. Note
* that since the Broadcom controller contains VPD support, we
* can get the device name string from the controller itself instead
* of the compiled-in string. This is a little slow, but it guarantees
* we'll always announce the right product name.
*/
static int
bge_probe(dev)
device_t dev;
{
struct bge_type *t;
struct bge_softc *sc;
char *descbuf;
t = bge_devs;
sc = device_get_softc(dev);
bzero(sc, sizeof(struct bge_softc));
sc->bge_unit = device_get_unit(dev);
sc->bge_dev = dev;
while(t->bge_name != NULL) {
if ((pci_get_vendor(dev) == t->bge_vid) &&
(pci_get_device(dev) == t->bge_did)) {
#ifdef notdef
bge_vpd_read(sc);
device_set_desc(dev, sc->bge_vpd_prodname);
#endif
descbuf = malloc(BGE_DEVDESC_MAX, M_TEMP, M_NOWAIT);
if (descbuf == NULL)
return(ENOMEM);
snprintf(descbuf, BGE_DEVDESC_MAX,
"%s, ASIC rev. %#04x", t->bge_name,
pci_read_config(dev, BGE_PCI_MISC_CTL, 4) >> 16);
device_set_desc_copy(dev, descbuf);
if (pci_get_subvendor(dev) == DELL_VENDORID)
sc->bge_no_3_led = 1;
free(descbuf, M_TEMP);
return(0);
}
t++;
}
return(ENXIO);
}
static void
bge_dma_free(sc)
struct bge_softc *sc;
{
int i;
/* Destroy DMA maps for RX buffers */
for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
if (sc->bge_cdata.bge_rx_std_dmamap[i])
bus_dmamap_destroy(sc->bge_cdata.bge_mtag,
sc->bge_cdata.bge_rx_std_dmamap[i]);
}
/* Destroy DMA maps for jumbo RX buffers */
for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
if (sc->bge_cdata.bge_rx_jumbo_dmamap[i])
bus_dmamap_destroy(sc->bge_cdata.bge_mtag_jumbo,
sc->bge_cdata.bge_rx_jumbo_dmamap[i]);
}
/* Destroy DMA maps for TX buffers */
for (i = 0; i < BGE_TX_RING_CNT; i++) {
if (sc->bge_cdata.bge_tx_dmamap[i])
bus_dmamap_destroy(sc->bge_cdata.bge_mtag,
sc->bge_cdata.bge_tx_dmamap[i]);
}
if (sc->bge_cdata.bge_mtag)
bus_dma_tag_destroy(sc->bge_cdata.bge_mtag);
/* Destroy standard RX ring */
if (sc->bge_ldata.bge_rx_std_ring)
bus_dmamem_free(sc->bge_cdata.bge_rx_std_ring_tag,
sc->bge_ldata.bge_rx_std_ring,
sc->bge_cdata.bge_rx_std_ring_map);
if (sc->bge_cdata.bge_rx_std_ring_map) {
bus_dmamap_unload(sc->bge_cdata.bge_rx_std_ring_tag,
sc->bge_cdata.bge_rx_std_ring_map);
bus_dmamap_destroy(sc->bge_cdata.bge_rx_std_ring_tag,
sc->bge_cdata.bge_rx_std_ring_map);
}
if (sc->bge_cdata.bge_rx_std_ring_tag)
bus_dma_tag_destroy(sc->bge_cdata.bge_rx_std_ring_tag);
/* Destroy jumbo RX ring */
if (sc->bge_ldata.bge_rx_jumbo_ring)
bus_dmamem_free(sc->bge_cdata.bge_rx_jumbo_ring_tag,
sc->bge_ldata.bge_rx_jumbo_ring,
sc->bge_cdata.bge_rx_jumbo_ring_map);
if (sc->bge_cdata.bge_rx_jumbo_ring_map) {
bus_dmamap_unload(sc->bge_cdata.bge_rx_jumbo_ring_tag,
sc->bge_cdata.bge_rx_jumbo_ring_map);
bus_dmamap_destroy(sc->bge_cdata.bge_rx_jumbo_ring_tag,
sc->bge_cdata.bge_rx_jumbo_ring_map);
}
if (sc->bge_cdata.bge_rx_jumbo_ring_tag)
bus_dma_tag_destroy(sc->bge_cdata.bge_rx_jumbo_ring_tag);
/* Destroy RX return ring */
if (sc->bge_ldata.bge_rx_return_ring)
bus_dmamem_free(sc->bge_cdata.bge_rx_return_ring_tag,
sc->bge_ldata.bge_rx_return_ring,
sc->bge_cdata.bge_rx_return_ring_map);
if (sc->bge_cdata.bge_rx_return_ring_map) {
bus_dmamap_unload(sc->bge_cdata.bge_rx_return_ring_tag,
sc->bge_cdata.bge_rx_return_ring_map);
bus_dmamap_destroy(sc->bge_cdata.bge_rx_return_ring_tag,
sc->bge_cdata.bge_rx_return_ring_map);
}
if (sc->bge_cdata.bge_rx_return_ring_tag)
bus_dma_tag_destroy(sc->bge_cdata.bge_rx_return_ring_tag);
/* Destroy TX ring */
if (sc->bge_ldata.bge_tx_ring)
bus_dmamem_free(sc->bge_cdata.bge_tx_ring_tag,
sc->bge_ldata.bge_tx_ring,
sc->bge_cdata.bge_tx_ring_map);
if (sc->bge_cdata.bge_tx_ring_map) {
bus_dmamap_unload(sc->bge_cdata.bge_tx_ring_tag,
sc->bge_cdata.bge_tx_ring_map);
bus_dmamap_destroy(sc->bge_cdata.bge_tx_ring_tag,
sc->bge_cdata.bge_tx_ring_map);
}
if (sc->bge_cdata.bge_tx_ring_tag)
bus_dma_tag_destroy(sc->bge_cdata.bge_tx_ring_tag);
/* Destroy status block */
if (sc->bge_ldata.bge_status_block)
bus_dmamem_free(sc->bge_cdata.bge_status_tag,
sc->bge_ldata.bge_status_block,
sc->bge_cdata.bge_status_map);
if (sc->bge_cdata.bge_status_map) {
bus_dmamap_unload(sc->bge_cdata.bge_status_tag,
sc->bge_cdata.bge_status_map);
bus_dmamap_destroy(sc->bge_cdata.bge_status_tag,
sc->bge_cdata.bge_status_map);
}
if (sc->bge_cdata.bge_status_tag)
bus_dma_tag_destroy(sc->bge_cdata.bge_status_tag);
/* Destroy statistics block */
if (sc->bge_ldata.bge_stats)
bus_dmamem_free(sc->bge_cdata.bge_stats_tag,
sc->bge_ldata.bge_stats,
sc->bge_cdata.bge_stats_map);
if (sc->bge_cdata.bge_stats_map) {
bus_dmamap_unload(sc->bge_cdata.bge_stats_tag,
sc->bge_cdata.bge_stats_map);
bus_dmamap_destroy(sc->bge_cdata.bge_stats_tag,
sc->bge_cdata.bge_stats_map);
}
if (sc->bge_cdata.bge_stats_tag)
bus_dma_tag_destroy(sc->bge_cdata.bge_stats_tag);
/* Destroy the parent tag */
if (sc->bge_cdata.bge_parent_tag)
bus_dma_tag_destroy(sc->bge_cdata.bge_parent_tag);
return;
}
static int
bge_dma_alloc(dev)
device_t dev;
{
struct bge_softc *sc;
int nseg, i, error;
struct bge_dmamap_arg ctx;
sc = device_get_softc(dev);
/*
* Allocate the parent bus DMA tag appropriate for PCI.
*/
#define BGE_NSEG_NEW 32
error = bus_dma_tag_create(NULL, /* parent */
PAGE_SIZE, 0, /* alignment, boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR_32BIT,/* highaddr */
NULL, NULL, /* filter, filterarg */
MAXBSIZE, BGE_NSEG_NEW, /* maxsize, nsegments */
BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */
BUS_DMA_ALLOCNOW, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->bge_cdata.bge_parent_tag);
/*
* Create tag for RX mbufs.
*/
nseg = 32;
error = bus_dma_tag_create(sc->bge_cdata.bge_parent_tag, 1,
0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL,
NULL, MCLBYTES * nseg, nseg, MCLBYTES, 0, NULL, NULL,
&sc->bge_cdata.bge_mtag);
if (error) {
device_printf(dev, "could not allocate dma tag\n");
return (ENOMEM);
}
/* Create DMA maps for RX buffers */
for (i = 0; i < BGE_STD_RX_RING_CNT; i++) {
error = bus_dmamap_create(sc->bge_cdata.bge_mtag, 0,
&sc->bge_cdata.bge_rx_std_dmamap[i]);
if (error) {
device_printf(dev, "can't create DMA map for RX\n");
return(ENOMEM);
}
}
/* Create DMA maps for TX buffers */
for (i = 0; i < BGE_TX_RING_CNT; i++) {
error = bus_dmamap_create(sc->bge_cdata.bge_mtag, 0,
&sc->bge_cdata.bge_tx_dmamap[i]);
if (error) {
device_printf(dev, "can't create DMA map for RX\n");
return(ENOMEM);
}
}
/* Create tag for standard RX ring */
error = bus_dma_tag_create(sc->bge_cdata.bge_parent_tag,
PAGE_SIZE, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL,
NULL, BGE_STD_RX_RING_SZ, 1, BGE_STD_RX_RING_SZ, 0,
NULL, NULL, &sc->bge_cdata.bge_rx_std_ring_tag);
if (error) {
device_printf(dev, "could not allocate dma tag\n");
return (ENOMEM);
}
/* Allocate DMA'able memory for standard RX ring */
error = bus_dmamem_alloc(sc->bge_cdata.bge_rx_std_ring_tag,
(void **)&sc->bge_ldata.bge_rx_std_ring, BUS_DMA_NOWAIT,
&sc->bge_cdata.bge_rx_std_ring_map);
if (error)
return (ENOMEM);
bzero((char *)sc->bge_ldata.bge_rx_std_ring, BGE_STD_RX_RING_SZ);
/* Load the address of the standard RX ring */
ctx.bge_maxsegs = 1;
ctx.sc = sc;
error = bus_dmamap_load(sc->bge_cdata.bge_rx_std_ring_tag,
sc->bge_cdata.bge_rx_std_ring_map, sc->bge_ldata.bge_rx_std_ring,
BGE_STD_RX_RING_SZ, bge_dma_map_addr, &ctx, BUS_DMA_NOWAIT);
if (error)
return (ENOMEM);
sc->bge_ldata.bge_rx_std_ring_paddr = ctx.bge_busaddr;
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750) {
/*
* Create tag for jumbo mbufs.
* This is really a bit of a kludge. We allocate a special
* jumbo buffer pool which (thanks to the way our DMA
* memory allocation works) will consist of contiguous
* pages. This means that even though a jumbo buffer might
* be larger than a page size, we don't really need to
* map it into more than one DMA segment. However, the
* default mbuf tag will result in multi-segment mappings,
* so we have to create a special jumbo mbuf tag that
* lets us get away with mapping the jumbo buffers as
* a single segment. I think eventually the driver should
* be changed so that it uses ordinary mbufs and cluster
* buffers, i.e. jumbo frames can span multiple DMA
* descriptors. But that's a project for another day.
*/
error = bus_dma_tag_create(sc->bge_cdata.bge_parent_tag,
1, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL,
NULL, MCLBYTES * nseg, nseg, BGE_JLEN, 0, NULL, NULL,
&sc->bge_cdata.bge_mtag_jumbo);
if (error) {
device_printf(dev, "could not allocate dma tag\n");
return (ENOMEM);
}
/* Create tag for jumbo RX ring */
error = bus_dma_tag_create(sc->bge_cdata.bge_parent_tag,
PAGE_SIZE, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL,
NULL, BGE_JUMBO_RX_RING_SZ, 1, BGE_JUMBO_RX_RING_SZ, 0,
NULL, NULL, &sc->bge_cdata.bge_rx_jumbo_ring_tag);
if (error) {
device_printf(dev, "could not allocate dma tag\n");
return (ENOMEM);
}
/* Allocate DMA'able memory for jumbo RX ring */
error = bus_dmamem_alloc(sc->bge_cdata.bge_rx_jumbo_ring_tag,
(void **)&sc->bge_ldata.bge_rx_jumbo_ring, BUS_DMA_NOWAIT,
&sc->bge_cdata.bge_rx_jumbo_ring_map);
if (error)
return (ENOMEM);
bzero((char *)sc->bge_ldata.bge_rx_jumbo_ring,
BGE_JUMBO_RX_RING_SZ);
/* Load the address of the jumbo RX ring */
ctx.bge_maxsegs = 1;
ctx.sc = sc;
error = bus_dmamap_load(sc->bge_cdata.bge_rx_jumbo_ring_tag,
sc->bge_cdata.bge_rx_jumbo_ring_map,
sc->bge_ldata.bge_rx_jumbo_ring, BGE_JUMBO_RX_RING_SZ,
bge_dma_map_addr, &ctx, BUS_DMA_NOWAIT);
if (error)
return (ENOMEM);
sc->bge_ldata.bge_rx_jumbo_ring_paddr = ctx.bge_busaddr;
/* Create DMA maps for jumbo RX buffers */
for (i = 0; i < BGE_JUMBO_RX_RING_CNT; i++) {
error = bus_dmamap_create(sc->bge_cdata.bge_mtag_jumbo,
0, &sc->bge_cdata.bge_rx_jumbo_dmamap[i]);
if (error) {
device_printf(dev,
"can't create DMA map for RX\n");
return(ENOMEM);
}
}
}
/* Create tag for RX return ring */
error = bus_dma_tag_create(sc->bge_cdata.bge_parent_tag,
PAGE_SIZE, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL,
NULL, BGE_RX_RTN_RING_SZ(sc), 1, BGE_RX_RTN_RING_SZ(sc), 0,
NULL, NULL, &sc->bge_cdata.bge_rx_return_ring_tag);
if (error) {
device_printf(dev, "could not allocate dma tag\n");
return (ENOMEM);
}
/* Allocate DMA'able memory for RX return ring */
error = bus_dmamem_alloc(sc->bge_cdata.bge_rx_return_ring_tag,
(void **)&sc->bge_ldata.bge_rx_return_ring, BUS_DMA_NOWAIT,
&sc->bge_cdata.bge_rx_return_ring_map);
if (error)
return (ENOMEM);
bzero((char *)sc->bge_ldata.bge_rx_return_ring,
BGE_RX_RTN_RING_SZ(sc));
/* Load the address of the RX return ring */
ctx.bge_maxsegs = 1;
ctx.sc = sc;
error = bus_dmamap_load(sc->bge_cdata.bge_rx_return_ring_tag,
sc->bge_cdata.bge_rx_return_ring_map,
sc->bge_ldata.bge_rx_return_ring, BGE_RX_RTN_RING_SZ(sc),
bge_dma_map_addr, &ctx, BUS_DMA_NOWAIT);
if (error)
return (ENOMEM);
sc->bge_ldata.bge_rx_return_ring_paddr = ctx.bge_busaddr;
/* Create tag for TX ring */
error = bus_dma_tag_create(sc->bge_cdata.bge_parent_tag,
PAGE_SIZE, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL,
NULL, BGE_TX_RING_SZ, 1, BGE_TX_RING_SZ, 0, NULL, NULL,
&sc->bge_cdata.bge_tx_ring_tag);
if (error) {
device_printf(dev, "could not allocate dma tag\n");
return (ENOMEM);
}
/* Allocate DMA'able memory for TX ring */
error = bus_dmamem_alloc(sc->bge_cdata.bge_tx_ring_tag,
(void **)&sc->bge_ldata.bge_tx_ring, BUS_DMA_NOWAIT,
&sc->bge_cdata.bge_tx_ring_map);
if (error)
return (ENOMEM);
bzero((char *)sc->bge_ldata.bge_tx_ring, BGE_TX_RING_SZ);
/* Load the address of the TX ring */
ctx.bge_maxsegs = 1;
ctx.sc = sc;
error = bus_dmamap_load(sc->bge_cdata.bge_tx_ring_tag,
sc->bge_cdata.bge_tx_ring_map, sc->bge_ldata.bge_tx_ring,
BGE_TX_RING_SZ, bge_dma_map_addr, &ctx, BUS_DMA_NOWAIT);
if (error)
return (ENOMEM);
sc->bge_ldata.bge_tx_ring_paddr = ctx.bge_busaddr;
/* Create tag for status block */
error = bus_dma_tag_create(sc->bge_cdata.bge_parent_tag,
PAGE_SIZE, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL,
NULL, BGE_STATUS_BLK_SZ, 1, BGE_STATUS_BLK_SZ, 0,
NULL, NULL, &sc->bge_cdata.bge_status_tag);
if (error) {
device_printf(dev, "could not allocate dma tag\n");
return (ENOMEM);
}
/* Allocate DMA'able memory for status block */
error = bus_dmamem_alloc(sc->bge_cdata.bge_status_tag,
(void **)&sc->bge_ldata.bge_status_block, BUS_DMA_NOWAIT,
&sc->bge_cdata.bge_status_map);
if (error)
return (ENOMEM);
bzero((char *)sc->bge_ldata.bge_status_block, BGE_STATUS_BLK_SZ);
/* Load the address of the status block */
ctx.sc = sc;
ctx.bge_maxsegs = 1;
error = bus_dmamap_load(sc->bge_cdata.bge_status_tag,
sc->bge_cdata.bge_status_map, sc->bge_ldata.bge_status_block,
BGE_STATUS_BLK_SZ, bge_dma_map_addr, &ctx, BUS_DMA_NOWAIT);
if (error)
return (ENOMEM);
sc->bge_ldata.bge_status_block_paddr = ctx.bge_busaddr;
/* Create tag for statistics block */
error = bus_dma_tag_create(sc->bge_cdata.bge_parent_tag,
PAGE_SIZE, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL,
NULL, BGE_STATS_SZ, 1, BGE_STATS_SZ, 0, NULL, NULL,
&sc->bge_cdata.bge_stats_tag);
if (error) {
device_printf(dev, "could not allocate dma tag\n");
return (ENOMEM);
}
/* Allocate DMA'able memory for statistics block */
error = bus_dmamem_alloc(sc->bge_cdata.bge_stats_tag,
(void **)&sc->bge_ldata.bge_stats, BUS_DMA_NOWAIT,
&sc->bge_cdata.bge_stats_map);
if (error)
return (ENOMEM);
bzero((char *)sc->bge_ldata.bge_stats, BGE_STATS_SZ);
/* Load the address of the statstics block */
ctx.sc = sc;
ctx.bge_maxsegs = 1;
error = bus_dmamap_load(sc->bge_cdata.bge_stats_tag,
sc->bge_cdata.bge_stats_map, sc->bge_ldata.bge_stats,
BGE_STATS_SZ, bge_dma_map_addr, &ctx, BUS_DMA_NOWAIT);
if (error)
return (ENOMEM);
sc->bge_ldata.bge_stats_paddr = ctx.bge_busaddr;
return(0);
}
static int
bge_attach(dev)
device_t dev;
{
struct ifnet *ifp;
struct bge_softc *sc;
u_int32_t hwcfg = 0;
u_int32_t mac_addr = 0;
int unit, error = 0, rid;
sc = device_get_softc(dev);
unit = device_get_unit(dev);
sc->bge_dev = dev;
sc->bge_unit = unit;
/*
* Map control/status registers.
*/
pci_enable_busmaster(dev);
rid = BGE_PCI_BAR0;
sc->bge_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
RF_ACTIVE|PCI_RF_DENSE);
if (sc->bge_res == NULL) {
printf ("bge%d: couldn't map memory\n", unit);
error = ENXIO;
goto fail;
}
sc->bge_btag = rman_get_bustag(sc->bge_res);
sc->bge_bhandle = rman_get_bushandle(sc->bge_res);
sc->bge_vhandle = (vm_offset_t)rman_get_virtual(sc->bge_res);
/* Allocate interrupt */
rid = 0;
sc->bge_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_SHAREABLE | RF_ACTIVE);
if (sc->bge_irq == NULL) {
printf("bge%d: couldn't map interrupt\n", unit);
error = ENXIO;
goto fail;
}
sc->bge_unit = unit;
BGE_LOCK_INIT(sc, device_get_nameunit(dev));
/* Save ASIC rev. */
sc->bge_chipid =
pci_read_config(dev, BGE_PCI_MISC_CTL, 4) &
BGE_PCIMISCCTL_ASICREV;
sc->bge_asicrev = BGE_ASICREV(sc->bge_chipid);
sc->bge_chiprev = BGE_CHIPREV(sc->bge_chipid);
/*
* XXX: Broadcom Linux driver. Not in specs or eratta.
* PCI-Express?
*/
if (sc->bge_asicrev == BGE_ASICREV_BCM5750) {
u_int32_t v;
v = pci_read_config(dev, BGE_PCI_MSI_CAPID, 4);
if (((v >> 8) & 0xff) == BGE_PCIE_CAPID_REG) {
v = pci_read_config(dev, BGE_PCIE_CAPID_REG, 4);
if ((v & 0xff) == BGE_PCIE_CAPID)
sc->bge_pcie = 1;
}
}
/* Try to reset the chip. */
bge_reset(sc);
if (bge_chipinit(sc)) {
printf("bge%d: chip initialization failed\n", sc->bge_unit);
bge_release_resources(sc);
error = ENXIO;
goto fail;
}
/*
* Get station address from the EEPROM.
*/
mac_addr = bge_readmem_ind(sc, 0x0c14);
if ((mac_addr >> 16) == 0x484b) {
sc->arpcom.ac_enaddr[0] = (u_char)(mac_addr >> 8);
sc->arpcom.ac_enaddr[1] = (u_char)mac_addr;
mac_addr = bge_readmem_ind(sc, 0x0c18);
sc->arpcom.ac_enaddr[2] = (u_char)(mac_addr >> 24);
sc->arpcom.ac_enaddr[3] = (u_char)(mac_addr >> 16);
sc->arpcom.ac_enaddr[4] = (u_char)(mac_addr >> 8);
sc->arpcom.ac_enaddr[5] = (u_char)mac_addr;
} else if (bge_read_eeprom(sc, (caddr_t)&sc->arpcom.ac_enaddr,
BGE_EE_MAC_OFFSET + 2, ETHER_ADDR_LEN)) {
printf("bge%d: failed to read station address\n", unit);
bge_release_resources(sc);
error = ENXIO;
goto fail;
}
/* 5705 limits RX return ring to 512 entries. */
if (sc->bge_asicrev == BGE_ASICREV_BCM5705 ||
sc->bge_asicrev == BGE_ASICREV_BCM5750)
sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT_5705;
else
sc->bge_return_ring_cnt = BGE_RETURN_RING_CNT;
if (bge_dma_alloc(dev)) {
printf ("bge%d: failed to allocate DMA resources\n",
sc->bge_unit);
bge_release_resources(sc);
error = ENXIO;
goto fail;
}
/*
* Try to allocate memory for jumbo buffers.
* The 5705 does not appear to support jumbo frames.
*/
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750) {
if (bge_alloc_jumbo_mem(sc)) {
printf("bge%d: jumbo buffer allocation "
"failed\n", sc->bge_unit);
bge_release_resources(sc);
error = ENXIO;
goto fail;
}
}
/* Set default tuneable values. */
sc->bge_stat_ticks = BGE_TICKS_PER_SEC;
sc->bge_rx_coal_ticks = 150;
sc->bge_tx_coal_ticks = 150;
sc->bge_rx_max_coal_bds = 64;
sc->bge_tx_max_coal_bds = 128;
/* Set up ifnet structure */
ifp = &sc->arpcom.ac_if;
ifp->if_softc = sc;
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = bge_ioctl;
ifp->if_start = bge_start;
ifp->if_watchdog = bge_watchdog;
ifp->if_init = bge_init;
ifp->if_mtu = ETHERMTU;
ifp->if_snd.ifq_drv_maxlen = BGE_TX_RING_CNT - 1;
IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen);
IFQ_SET_READY(&ifp->if_snd);
ifp->if_hwassist = BGE_CSUM_FEATURES;
/* NB: the code for RX csum offload is disabled for now */
ifp->if_capabilities = IFCAP_TXCSUM | IFCAP_VLAN_HWTAGGING |
IFCAP_VLAN_MTU;
ifp->if_capenable = ifp->if_capabilities;
/*
* Figure out what sort of media we have by checking the
* hardware config word in the first 32k of NIC internal memory,
* or fall back to examining the EEPROM if necessary.
* Note: on some BCM5700 cards, this value appears to be unset.
* If that's the case, we have to rely on identifying the NIC
* by its PCI subsystem ID, as we do below for the SysKonnect
* SK-9D41.
*/
if (bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_SIG) == BGE_MAGIC_NUMBER)
hwcfg = bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM_NICCFG);
else {
bge_read_eeprom(sc, (caddr_t)&hwcfg,
BGE_EE_HWCFG_OFFSET, sizeof(hwcfg));
hwcfg = ntohl(hwcfg);
}
if ((hwcfg & BGE_HWCFG_MEDIA) == BGE_MEDIA_FIBER)
sc->bge_tbi = 1;
/* The SysKonnect SK-9D41 is a 1000baseSX card. */
if ((pci_read_config(dev, BGE_PCI_SUBSYS, 4) >> 16) == SK_SUBSYSID_9D41)
sc->bge_tbi = 1;
if (sc->bge_tbi) {
ifmedia_init(&sc->bge_ifmedia, IFM_IMASK,
bge_ifmedia_upd, bge_ifmedia_sts);
ifmedia_add(&sc->bge_ifmedia, IFM_ETHER|IFM_1000_SX, 0, NULL);
ifmedia_add(&sc->bge_ifmedia,
IFM_ETHER|IFM_1000_SX|IFM_FDX, 0, NULL);
ifmedia_add(&sc->bge_ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL);
ifmedia_set(&sc->bge_ifmedia, IFM_ETHER|IFM_AUTO);
sc->bge_ifmedia.ifm_media = sc->bge_ifmedia.ifm_cur->ifm_media;
} else {
/*
* Do transceiver setup.
*/
if (mii_phy_probe(dev, &sc->bge_miibus,
bge_ifmedia_upd, bge_ifmedia_sts)) {
printf("bge%d: MII without any PHY!\n", sc->bge_unit);
bge_release_resources(sc);
bge_free_jumbo_mem(sc);
error = ENXIO;
goto fail;
}
}
/*
* When using the BCM5701 in PCI-X mode, data corruption has
* been observed in the first few bytes of some received packets.
* Aligning the packet buffer in memory eliminates the corruption.
* Unfortunately, this misaligns the packet payloads. On platforms
* which do not support unaligned accesses, we will realign the
* payloads by copying the received packets.
*/
switch (sc->bge_chipid) {
case BGE_CHIPID_BCM5701_A0:
case BGE_CHIPID_BCM5701_B0:
case BGE_CHIPID_BCM5701_B2:
case BGE_CHIPID_BCM5701_B5:
/* If in PCI-X mode, work around the alignment bug. */
if ((pci_read_config(dev, BGE_PCI_PCISTATE, 4) &
(BGE_PCISTATE_PCI_BUSMODE | BGE_PCISTATE_PCI_BUSSPEED)) ==
BGE_PCISTATE_PCI_BUSSPEED)
sc->bge_rx_alignment_bug = 1;
break;
}
/*
* Call MI attach routine.
*/
ether_ifattach(ifp, sc->arpcom.ac_enaddr);
callout_init(&sc->bge_stat_ch, CALLOUT_MPSAFE);
/*
* Hookup IRQ last.
*/
error = bus_setup_intr(dev, sc->bge_irq, INTR_TYPE_NET | INTR_MPSAFE,
bge_intr, sc, &sc->bge_intrhand);
if (error) {
bge_release_resources(sc);
printf("bge%d: couldn't set up irq\n", unit);
}
fail:
return(error);
}
static int
bge_detach(dev)
device_t dev;
{
struct bge_softc *sc;
struct ifnet *ifp;
sc = device_get_softc(dev);
ifp = &sc->arpcom.ac_if;
BGE_LOCK(sc);
bge_stop(sc);
bge_reset(sc);
BGE_UNLOCK(sc);
ether_ifdetach(ifp);
if (sc->bge_tbi) {
ifmedia_removeall(&sc->bge_ifmedia);
} else {
bus_generic_detach(dev);
device_delete_child(dev, sc->bge_miibus);
}
bge_release_resources(sc);
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750)
bge_free_jumbo_mem(sc);
return(0);
}
static void
bge_release_resources(sc)
struct bge_softc *sc;
{
device_t dev;
dev = sc->bge_dev;
if (sc->bge_vpd_prodname != NULL)
free(sc->bge_vpd_prodname, M_DEVBUF);
if (sc->bge_vpd_readonly != NULL)
free(sc->bge_vpd_readonly, M_DEVBUF);
if (sc->bge_intrhand != NULL)
bus_teardown_intr(dev, sc->bge_irq, sc->bge_intrhand);
if (sc->bge_irq != NULL)
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->bge_irq);
if (sc->bge_res != NULL)
bus_release_resource(dev, SYS_RES_MEMORY,
BGE_PCI_BAR0, sc->bge_res);
bge_dma_free(sc);
if (mtx_initialized(&sc->bge_mtx)) /* XXX */
BGE_LOCK_DESTROY(sc);
return;
}
static void
bge_reset(sc)
struct bge_softc *sc;
{
device_t dev;
u_int32_t cachesize, command, pcistate, reset;
int i, val = 0;
dev = sc->bge_dev;
/* Save some important PCI state. */
cachesize = pci_read_config(dev, BGE_PCI_CACHESZ, 4);
command = pci_read_config(dev, BGE_PCI_CMD, 4);
pcistate = pci_read_config(dev, BGE_PCI_PCISTATE, 4);
pci_write_config(dev, BGE_PCI_MISC_CTL,
BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
BGE_PCIMISCCTL_ENDIAN_WORDSWAP|BGE_PCIMISCCTL_PCISTATE_RW, 4);
reset = BGE_MISCCFG_RESET_CORE_CLOCKS|(65<<1);
/* XXX: Broadcom Linux driver. */
if (sc->bge_pcie) {
if (CSR_READ_4(sc, 0x7e2c) == 0x60) /* PCIE 1.0 */
CSR_WRITE_4(sc, 0x7e2c, 0x20);
if (sc->bge_chipid != BGE_CHIPID_BCM5750_A0) {
/* Prevent PCIE link training during global reset */
CSR_WRITE_4(sc, BGE_MISC_CFG, (1<<29));
reset |= (1<<29);
}
}
/* Issue global reset */
bge_writereg_ind(sc, BGE_MISC_CFG, reset);
DELAY(1000);
/* XXX: Broadcom Linux driver. */
if (sc->bge_pcie) {
if (sc->bge_chipid == BGE_CHIPID_BCM5750_A0) {
uint32_t v;
DELAY(500000); /* wait for link training to complete */
v = pci_read_config(dev, 0xc4, 4);
pci_write_config(dev, 0xc4, v | (1<<15), 4);
}
/* Set PCIE max payload size and clear error status. */
pci_write_config(dev, 0xd8, 0xf5000, 4);
}
/* Reset some of the PCI state that got zapped by reset */
pci_write_config(dev, BGE_PCI_MISC_CTL,
BGE_PCIMISCCTL_INDIRECT_ACCESS|BGE_PCIMISCCTL_MASK_PCI_INTR|
BGE_PCIMISCCTL_ENDIAN_WORDSWAP|BGE_PCIMISCCTL_PCISTATE_RW, 4);
pci_write_config(dev, BGE_PCI_CACHESZ, cachesize, 4);
pci_write_config(dev, BGE_PCI_CMD, command, 4);
bge_writereg_ind(sc, BGE_MISC_CFG, (65 << 1));
/* Enable memory arbiter. */
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750)
CSR_WRITE_4(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
/*
* Prevent PXE restart: write a magic number to the
* general communications memory at 0xB50.
*/
bge_writemem_ind(sc, BGE_SOFTWARE_GENCOMM, BGE_MAGIC_NUMBER);
/*
* Poll the value location we just wrote until
* we see the 1's complement of the magic number.
* This indicates that the firmware initialization
* is complete.
*/
for (i = 0; i < BGE_TIMEOUT; i++) {
val = bge_readmem_ind(sc, BGE_SOFTWARE_GENCOMM);
if (val == ~BGE_MAGIC_NUMBER)
break;
DELAY(10);
}
if (i == BGE_TIMEOUT) {
printf("bge%d: firmware handshake timed out\n", sc->bge_unit);
return;
}
/*
* XXX Wait for the value of the PCISTATE register to
* return to its original pre-reset state. This is a
* fairly good indicator of reset completion. If we don't
* wait for the reset to fully complete, trying to read
* from the device's non-PCI registers may yield garbage
* results.
*/
for (i = 0; i < BGE_TIMEOUT; i++) {
if (pci_read_config(dev, BGE_PCI_PCISTATE, 4) == pcistate)
break;
DELAY(10);
}
/* Fix up byte swapping */
CSR_WRITE_4(sc, BGE_MODE_CTL, BGE_MODECTL_BYTESWAP_NONFRAME|
BGE_MODECTL_BYTESWAP_DATA);
CSR_WRITE_4(sc, BGE_MAC_MODE, 0);
/*
* The 5704 in TBI mode apparently needs some special
* adjustment to insure the SERDES drive level is set
* to 1.2V.
*/
if (sc->bge_asicrev == BGE_ASICREV_BCM5704 && sc->bge_tbi) {
uint32_t serdescfg;
serdescfg = CSR_READ_4(sc, BGE_SERDES_CFG);
serdescfg = (serdescfg & ~0xFFF) | 0x880;
CSR_WRITE_4(sc, BGE_SERDES_CFG, serdescfg);
}
/* XXX: Broadcom Linux driver. */
if (sc->bge_pcie && sc->bge_chipid != BGE_CHIPID_BCM5750_A0) {
uint32_t v;
v = CSR_READ_4(sc, 0x7c00);
CSR_WRITE_4(sc, 0x7c00, v | (1<<25));
}
DELAY(10000);
return;
}
/*
* Frame reception handling. This is called if there's a frame
* on the receive return list.
*
* Note: we have to be able to handle two possibilities here:
* 1) the frame is from the jumbo recieve ring
* 2) the frame is from the standard receive ring
*/
static void
bge_rxeof(sc)
struct bge_softc *sc;
{
struct ifnet *ifp;
int stdcnt = 0, jumbocnt = 0;
BGE_LOCK_ASSERT(sc);
ifp = &sc->arpcom.ac_if;
bus_dmamap_sync(sc->bge_cdata.bge_rx_return_ring_tag,
sc->bge_cdata.bge_rx_return_ring_map, BUS_DMASYNC_POSTWRITE);
bus_dmamap_sync(sc->bge_cdata.bge_rx_std_ring_tag,
sc->bge_cdata.bge_rx_std_ring_map, BUS_DMASYNC_POSTREAD);
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750) {
bus_dmamap_sync(sc->bge_cdata.bge_rx_jumbo_ring_tag,
sc->bge_cdata.bge_rx_jumbo_ring_map,
BUS_DMASYNC_POSTREAD);
}
while(sc->bge_rx_saved_considx !=
sc->bge_ldata.bge_status_block->bge_idx[0].bge_rx_prod_idx) {
struct bge_rx_bd *cur_rx;
u_int32_t rxidx;
struct ether_header *eh;
struct mbuf *m = NULL;
u_int16_t vlan_tag = 0;
int have_tag = 0;
cur_rx =
&sc->bge_ldata.bge_rx_return_ring[sc->bge_rx_saved_considx];
rxidx = cur_rx->bge_idx;
BGE_INC(sc->bge_rx_saved_considx, sc->bge_return_ring_cnt);
if (cur_rx->bge_flags & BGE_RXBDFLAG_VLAN_TAG) {
have_tag = 1;
vlan_tag = cur_rx->bge_vlan_tag;
}
if (cur_rx->bge_flags & BGE_RXBDFLAG_JUMBO_RING) {
BGE_INC(sc->bge_jumbo, BGE_JUMBO_RX_RING_CNT);
bus_dmamap_sync(sc->bge_cdata.bge_mtag_jumbo,
sc->bge_cdata.bge_rx_jumbo_dmamap[rxidx],
BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->bge_cdata.bge_mtag_jumbo,
sc->bge_cdata.bge_rx_jumbo_dmamap[rxidx]);
m = sc->bge_cdata.bge_rx_jumbo_chain[rxidx];
sc->bge_cdata.bge_rx_jumbo_chain[rxidx] = NULL;
jumbocnt++;
if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
ifp->if_ierrors++;
bge_newbuf_jumbo(sc, sc->bge_jumbo, m);
continue;
}
if (bge_newbuf_jumbo(sc,
sc->bge_jumbo, NULL) == ENOBUFS) {
ifp->if_ierrors++;
bge_newbuf_jumbo(sc, sc->bge_jumbo, m);
continue;
}
} else {
BGE_INC(sc->bge_std, BGE_STD_RX_RING_CNT);
bus_dmamap_sync(sc->bge_cdata.bge_mtag,
sc->bge_cdata.bge_rx_std_dmamap[rxidx],
BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->bge_cdata.bge_mtag,
sc->bge_cdata.bge_rx_std_dmamap[rxidx]);
m = sc->bge_cdata.bge_rx_std_chain[rxidx];
sc->bge_cdata.bge_rx_std_chain[rxidx] = NULL;
stdcnt++;
if (cur_rx->bge_flags & BGE_RXBDFLAG_ERROR) {
ifp->if_ierrors++;
bge_newbuf_std(sc, sc->bge_std, m);
continue;
}
if (bge_newbuf_std(sc, sc->bge_std,
NULL) == ENOBUFS) {
ifp->if_ierrors++;
bge_newbuf_std(sc, sc->bge_std, m);
continue;
}
}
ifp->if_ipackets++;
#ifndef __i386__
/*
* The i386 allows unaligned accesses, but for other
* platforms we must make sure the payload is aligned.
*/
if (sc->bge_rx_alignment_bug) {
bcopy(m->m_data, m->m_data + ETHER_ALIGN,
cur_rx->bge_len);
m->m_data += ETHER_ALIGN;
}
#endif
eh = mtod(m, struct ether_header *);
m->m_pkthdr.len = m->m_len = cur_rx->bge_len - ETHER_CRC_LEN;
m->m_pkthdr.rcvif = ifp;
#if 0 /* currently broken for some packets, possibly related to TCP options */
if (ifp->if_capenable & IFCAP_RXCSUM) {
m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
if ((cur_rx->bge_ip_csum ^ 0xffff) == 0)
m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
if (cur_rx->bge_flags & BGE_RXBDFLAG_TCP_UDP_CSUM) {
m->m_pkthdr.csum_data =
cur_rx->bge_tcp_udp_csum;
m->m_pkthdr.csum_flags |= CSUM_DATA_VALID;
}
}
#endif
/*
* If we received a packet with a vlan tag,
* attach that information to the packet.
*/
if (have_tag)
VLAN_INPUT_TAG(ifp, m, vlan_tag, continue);
BGE_UNLOCK(sc);
(*ifp->if_input)(ifp, m);
BGE_LOCK(sc);
}
bus_dmamap_sync(sc->bge_cdata.bge_rx_return_ring_tag,
sc->bge_cdata.bge_rx_return_ring_map, BUS_DMASYNC_PREWRITE);
bus_dmamap_sync(sc->bge_cdata.bge_rx_std_ring_tag,
sc->bge_cdata.bge_rx_std_ring_map,
BUS_DMASYNC_POSTREAD|BUS_DMASYNC_PREWRITE);
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750) {
bus_dmamap_sync(sc->bge_cdata.bge_rx_jumbo_ring_tag,
sc->bge_cdata.bge_rx_jumbo_ring_map,
BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
}
CSR_WRITE_4(sc, BGE_MBX_RX_CONS0_LO, sc->bge_rx_saved_considx);
if (stdcnt)
CSR_WRITE_4(sc, BGE_MBX_RX_STD_PROD_LO, sc->bge_std);
if (jumbocnt)
CSR_WRITE_4(sc, BGE_MBX_RX_JUMBO_PROD_LO, sc->bge_jumbo);
return;
}
static void
bge_txeof(sc)
struct bge_softc *sc;
{
struct bge_tx_bd *cur_tx = NULL;
struct ifnet *ifp;
BGE_LOCK_ASSERT(sc);
ifp = &sc->arpcom.ac_if;
/*
* Go through our tx ring and free mbufs for those
* frames that have been sent.
*/
while (sc->bge_tx_saved_considx !=
sc->bge_ldata.bge_status_block->bge_idx[0].bge_tx_cons_idx) {
u_int32_t idx = 0;
idx = sc->bge_tx_saved_considx;
cur_tx = &sc->bge_ldata.bge_tx_ring[idx];
if (cur_tx->bge_flags & BGE_TXBDFLAG_END)
ifp->if_opackets++;
if (sc->bge_cdata.bge_tx_chain[idx] != NULL) {
m_freem(sc->bge_cdata.bge_tx_chain[idx]);
sc->bge_cdata.bge_tx_chain[idx] = NULL;
bus_dmamap_unload(sc->bge_cdata.bge_mtag,
sc->bge_cdata.bge_tx_dmamap[idx]);
}
sc->bge_txcnt--;
BGE_INC(sc->bge_tx_saved_considx, BGE_TX_RING_CNT);
ifp->if_timer = 0;
}
if (cur_tx != NULL)
ifp->if_flags &= ~IFF_OACTIVE;
return;
}
static void
bge_intr(xsc)
void *xsc;
{
struct bge_softc *sc;
struct ifnet *ifp;
u_int32_t statusword;
u_int32_t status, mimode;
sc = xsc;
ifp = &sc->arpcom.ac_if;
BGE_LOCK(sc);
bus_dmamap_sync(sc->bge_cdata.bge_status_tag,
sc->bge_cdata.bge_status_map, BUS_DMASYNC_POSTWRITE);
statusword =
atomic_readandclear_32(&sc->bge_ldata.bge_status_block->bge_status);
#ifdef notdef
/* Avoid this for now -- checking this register is expensive. */
/* Make sure this is really our interrupt. */
if (!(CSR_READ_4(sc, BGE_MISC_LOCAL_CTL) & BGE_MLC_INTR_STATE))
return;
#endif
/* Ack interrupt and stop others from occuring. */
CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 1);
/*
* Process link state changes.
* Grrr. The link status word in the status block does
* not work correctly on the BCM5700 rev AX and BX chips,
* according to all available information. Hence, we have
* to enable MII interrupts in order to properly obtain
* async link changes. Unfortunately, this also means that
* we have to read the MAC status register to detect link
* changes, thereby adding an additional register access to
* the interrupt handler.
*/
if (sc->bge_asicrev == BGE_ASICREV_BCM5700) {
status = CSR_READ_4(sc, BGE_MAC_STS);
if (status & BGE_MACSTAT_MI_INTERRUPT) {
sc->bge_link = 0;
callout_stop(&sc->bge_stat_ch);
bge_tick_locked(sc);
/* Clear the interrupt */
CSR_WRITE_4(sc, BGE_MAC_EVT_ENB,
BGE_EVTENB_MI_INTERRUPT);
bge_miibus_readreg(sc->bge_dev, 1, BRGPHY_MII_ISR);
bge_miibus_writereg(sc->bge_dev, 1, BRGPHY_MII_IMR,
BRGPHY_INTRS);
}
} else {
if (statusword & BGE_STATFLAG_LINKSTATE_CHANGED) {
/*
* Sometimes PCS encoding errors are detected in
* TBI mode (on fiber NICs), and for some reason
* the chip will signal them as link changes.
* If we get a link change event, but the 'PCS
* encoding error' bit in the MAC status register
* is set, don't bother doing a link check.
* This avoids spurious "gigabit link up" messages
* that sometimes appear on fiber NICs during
* periods of heavy traffic. (There should be no
* effect on copper NICs.)
*
* If we do have a copper NIC (bge_tbi == 0) then
* check that the AUTOPOLL bit is set before
* processing the event as a real link change.
* Turning AUTOPOLL on and off in the MII read/write
* functions will often trigger a link status
* interrupt for no reason.
*/
status = CSR_READ_4(sc, BGE_MAC_STS);
mimode = CSR_READ_4(sc, BGE_MI_MODE);
if (!(status & (BGE_MACSTAT_PORT_DECODE_ERROR|
BGE_MACSTAT_MI_COMPLETE)) && (!sc->bge_tbi &&
(mimode & BGE_MIMODE_AUTOPOLL))) {
sc->bge_link = 0;
callout_stop(&sc->bge_stat_ch);
bge_tick_locked(sc);
}
/* Clear the interrupt */
CSR_WRITE_4(sc, BGE_MAC_STS, BGE_MACSTAT_SYNC_CHANGED|
BGE_MACSTAT_CFG_CHANGED|BGE_MACSTAT_MI_COMPLETE|
BGE_MACSTAT_LINK_CHANGED);
/* Force flush the status block cached by PCI bridge */
CSR_READ_4(sc, BGE_MBX_IRQ0_LO);
}
}
if (ifp->if_flags & IFF_RUNNING) {
/* Check RX return ring producer/consumer */
bge_rxeof(sc);
/* Check TX ring producer/consumer */
bge_txeof(sc);
}
bus_dmamap_sync(sc->bge_cdata.bge_status_tag,
sc->bge_cdata.bge_status_map, BUS_DMASYNC_PREWRITE);
bge_handle_events(sc);
/* Re-enable interrupts. */
CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 0);
if (ifp->if_flags & IFF_RUNNING && !IFQ_DRV_IS_EMPTY(&ifp->if_snd))
bge_start_locked(ifp);
BGE_UNLOCK(sc);
return;
}
static void
bge_tick_locked(sc)
struct bge_softc *sc;
{
struct mii_data *mii = NULL;
struct ifmedia *ifm = NULL;
struct ifnet *ifp;
ifp = &sc->arpcom.ac_if;
BGE_LOCK_ASSERT(sc);
if (sc->bge_asicrev == BGE_ASICREV_BCM5705 ||
sc->bge_asicrev == BGE_ASICREV_BCM5750)
bge_stats_update_regs(sc);
else
bge_stats_update(sc);
callout_reset(&sc->bge_stat_ch, hz, bge_tick, sc);
if (sc->bge_link)
return;
if (sc->bge_tbi) {
ifm = &sc->bge_ifmedia;
if (CSR_READ_4(sc, BGE_MAC_STS) &
BGE_MACSTAT_TBI_PCS_SYNCHED) {
sc->bge_link++;
if (sc->bge_asicrev == BGE_ASICREV_BCM5704)
BGE_CLRBIT(sc, BGE_MAC_MODE,
BGE_MACMODE_TBI_SEND_CFGS);
CSR_WRITE_4(sc, BGE_MAC_STS, 0xFFFFFFFF);
printf("bge%d: gigabit link up\n", sc->bge_unit);
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
bge_start_locked(ifp);
}
return;
}
mii = device_get_softc(sc->bge_miibus);
mii_tick(mii);
if (!sc->bge_link && mii->mii_media_status & IFM_ACTIVE &&
IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
sc->bge_link++;
if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T ||
IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX)
printf("bge%d: gigabit link up\n",
sc->bge_unit);
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
bge_start_locked(ifp);
}
return;
}
static void
bge_tick(xsc)
void *xsc;
{
struct bge_softc *sc;
sc = xsc;
BGE_LOCK(sc);
bge_tick_locked(sc);
BGE_UNLOCK(sc);
}
static void
bge_stats_update_regs(sc)
struct bge_softc *sc;
{
struct ifnet *ifp;
struct bge_mac_stats_regs stats;
u_int32_t *s;
int i;
ifp = &sc->arpcom.ac_if;
s = (u_int32_t *)&stats;
for (i = 0; i < sizeof(struct bge_mac_stats_regs); i += 4) {
*s = CSR_READ_4(sc, BGE_RX_STATS + i);
s++;
}
ifp->if_collisions +=
(stats.dot3StatsSingleCollisionFrames +
stats.dot3StatsMultipleCollisionFrames +
stats.dot3StatsExcessiveCollisions +
stats.dot3StatsLateCollisions) -
ifp->if_collisions;
return;
}
static void
bge_stats_update(sc)
struct bge_softc *sc;
{
struct ifnet *ifp;
struct bge_stats *stats;
ifp = &sc->arpcom.ac_if;
stats = (struct bge_stats *)(sc->bge_vhandle +
BGE_MEMWIN_START + BGE_STATS_BLOCK);
ifp->if_collisions +=
(stats->txstats.dot3StatsSingleCollisionFrames.bge_addr_lo +
stats->txstats.dot3StatsMultipleCollisionFrames.bge_addr_lo +
stats->txstats.dot3StatsExcessiveCollisions.bge_addr_lo +
stats->txstats.dot3StatsLateCollisions.bge_addr_lo) -
ifp->if_collisions;
#ifdef notdef
ifp->if_collisions +=
(sc->bge_rdata->bge_info.bge_stats.dot3StatsSingleCollisionFrames +
sc->bge_rdata->bge_info.bge_stats.dot3StatsMultipleCollisionFrames +
sc->bge_rdata->bge_info.bge_stats.dot3StatsExcessiveCollisions +
sc->bge_rdata->bge_info.bge_stats.dot3StatsLateCollisions) -
ifp->if_collisions;
#endif
return;
}
/*
* Encapsulate an mbuf chain in the tx ring by coupling the mbuf data
* pointers to descriptors.
*/
static int
bge_encap(sc, m_head, txidx)
struct bge_softc *sc;
struct mbuf *m_head;
u_int32_t *txidx;
{
struct bge_tx_bd *f = NULL;
u_int16_t csum_flags = 0;
struct m_tag *mtag;
struct bge_dmamap_arg ctx;
bus_dmamap_t map;
int error;
if (m_head->m_pkthdr.csum_flags) {
if (m_head->m_pkthdr.csum_flags & CSUM_IP)
csum_flags |= BGE_TXBDFLAG_IP_CSUM;
if (m_head->m_pkthdr.csum_flags & (CSUM_TCP | CSUM_UDP))
csum_flags |= BGE_TXBDFLAG_TCP_UDP_CSUM;
if (m_head->m_flags & M_LASTFRAG)
csum_flags |= BGE_TXBDFLAG_IP_FRAG_END;
else if (m_head->m_flags & M_FRAG)
csum_flags |= BGE_TXBDFLAG_IP_FRAG;
}
mtag = VLAN_OUTPUT_TAG(&sc->arpcom.ac_if, m_head);
ctx.sc = sc;
ctx.bge_idx = *txidx;
ctx.bge_ring = sc->bge_ldata.bge_tx_ring;
ctx.bge_flags = csum_flags;
/*
* Sanity check: avoid coming within 16 descriptors
* of the end of the ring.
*/
ctx.bge_maxsegs = (BGE_TX_RING_CNT - sc->bge_txcnt) - 16;
map = sc->bge_cdata.bge_tx_dmamap[*txidx];
error = bus_dmamap_load_mbuf(sc->bge_cdata.bge_mtag, map,
m_head, bge_dma_map_tx_desc, &ctx, BUS_DMA_NOWAIT);
if (error || ctx.bge_maxsegs == 0 /*||
ctx.bge_idx == sc->bge_tx_saved_considx*/)
return (ENOBUFS);
/*
* Insure that the map for this transmission
* is placed at the array index of the last descriptor
* in this chain.
*/
sc->bge_cdata.bge_tx_dmamap[*txidx] =
sc->bge_cdata.bge_tx_dmamap[ctx.bge_idx];
sc->bge_cdata.bge_tx_dmamap[ctx.bge_idx] = map;
sc->bge_cdata.bge_tx_chain[ctx.bge_idx] = m_head;
sc->bge_txcnt += ctx.bge_maxsegs;
f = &sc->bge_ldata.bge_tx_ring[*txidx];
if (mtag != NULL) {
f->bge_flags |= htole16(BGE_TXBDFLAG_VLAN_TAG);
f->bge_vlan_tag = htole16(VLAN_TAG_VALUE(mtag));
} else {
f->bge_vlan_tag = 0;
}
BGE_INC(ctx.bge_idx, BGE_TX_RING_CNT);
*txidx = ctx.bge_idx;
return(0);
}
/*
* Main transmit routine. To avoid having to do mbuf copies, we put pointers
* to the mbuf data regions directly in the transmit descriptors.
*/
static void
bge_start_locked(ifp)
struct ifnet *ifp;
{
struct bge_softc *sc;
struct mbuf *m_head = NULL;
u_int32_t prodidx = 0;
int count = 0;
sc = ifp->if_softc;
if (!sc->bge_link && IFQ_DRV_IS_EMPTY(&ifp->if_snd))
return;
prodidx = CSR_READ_4(sc, BGE_MBX_TX_HOST_PROD0_LO);
while(sc->bge_cdata.bge_tx_chain[prodidx] == NULL) {
IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
if (m_head == NULL)
break;
/*
* XXX
* The code inside the if() block is never reached since we
* must mark CSUM_IP_FRAGS in our if_hwassist to start getting
* requests to checksum TCP/UDP in a fragmented packet.
*
* XXX
* safety overkill. If this is a fragmented packet chain
* with delayed TCP/UDP checksums, then only encapsulate
* it if we have enough descriptors to handle the entire
* chain at once.
* (paranoia -- may not actually be needed)
*/
if (m_head->m_flags & M_FIRSTFRAG &&
m_head->m_pkthdr.csum_flags & (CSUM_DELAY_DATA)) {
if ((BGE_TX_RING_CNT - sc->bge_txcnt) <
m_head->m_pkthdr.csum_data + 16) {
IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
ifp->if_flags |= IFF_OACTIVE;
break;
}
}
/*
* Pack the data into the transmit ring. If we
* don't have room, set the OACTIVE flag and wait
* for the NIC to drain the ring.
*/
if (bge_encap(sc, m_head, &prodidx)) {
IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
ifp->if_flags |= IFF_OACTIVE;
break;
}
++count;
/*
* If there's a BPF listener, bounce a copy of this frame
* to him.
*/
BPF_MTAP(ifp, m_head);
}
if (count == 0) {
/* no packets were dequeued */
return;
}
/* Transmit */
CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
/* 5700 b2 errata */
if (sc->bge_chiprev == BGE_CHIPREV_5700_BX)
CSR_WRITE_4(sc, BGE_MBX_TX_HOST_PROD0_LO, prodidx);
/*
* Set a timeout in case the chip goes out to lunch.
*/
ifp->if_timer = 5;
return;
}
/*
* Main transmit routine. To avoid having to do mbuf copies, we put pointers
* to the mbuf data regions directly in the transmit descriptors.
*/
static void
bge_start(ifp)
struct ifnet *ifp;
{
struct bge_softc *sc;
sc = ifp->if_softc;
BGE_LOCK(sc);
bge_start_locked(ifp);
BGE_UNLOCK(sc);
}
static void
bge_init_locked(sc)
struct bge_softc *sc;
{
struct ifnet *ifp;
u_int16_t *m;
BGE_LOCK_ASSERT(sc);
ifp = &sc->arpcom.ac_if;
if (ifp->if_flags & IFF_RUNNING)
return;
/* Cancel pending I/O and flush buffers. */
bge_stop(sc);
bge_reset(sc);
bge_chipinit(sc);
/*
* Init the various state machines, ring
* control blocks and firmware.
*/
if (bge_blockinit(sc)) {
printf("bge%d: initialization failure\n", sc->bge_unit);
return;
}
ifp = &sc->arpcom.ac_if;
/* Specify MTU. */
CSR_WRITE_4(sc, BGE_RX_MTU, ifp->if_mtu +
ETHER_HDR_LEN + ETHER_CRC_LEN + ETHER_VLAN_ENCAP_LEN);
/* Load our MAC address. */
m = (u_int16_t *)&sc->arpcom.ac_enaddr[0];
CSR_WRITE_4(sc, BGE_MAC_ADDR1_LO, htons(m[0]));
CSR_WRITE_4(sc, BGE_MAC_ADDR1_HI, (htons(m[1]) << 16) | htons(m[2]));
/* Enable or disable promiscuous mode as needed. */
if (ifp->if_flags & IFF_PROMISC) {
BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
} else {
BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_RX_PROMISC);
}
/* Program multicast filter. */
bge_setmulti(sc);
/* Init RX ring. */
bge_init_rx_ring_std(sc);
/*
* Workaround for a bug in 5705 ASIC rev A0. Poll the NIC's
* memory to insure that the chip has in fact read the first
* entry of the ring.
*/
if (sc->bge_chipid == BGE_CHIPID_BCM5705_A0) {
u_int32_t v, i;
for (i = 0; i < 10; i++) {
DELAY(20);
v = bge_readmem_ind(sc, BGE_STD_RX_RINGS + 8);
if (v == (MCLBYTES - ETHER_ALIGN))
break;
}
if (i == 10)
printf ("bge%d: 5705 A0 chip failed to load RX ring\n",
sc->bge_unit);
}
/* Init jumbo RX ring. */
if (ifp->if_mtu > (ETHERMTU + ETHER_HDR_LEN + ETHER_CRC_LEN))
bge_init_rx_ring_jumbo(sc);
/* Init our RX return ring index */
sc->bge_rx_saved_considx = 0;
/* Init TX ring. */
bge_init_tx_ring(sc);
/* Turn on transmitter */
BGE_SETBIT(sc, BGE_TX_MODE, BGE_TXMODE_ENABLE);
/* Turn on receiver */
BGE_SETBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
/* Tell firmware we're alive. */
BGE_SETBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
/* Enable host interrupts. */
BGE_SETBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_CLEAR_INTA);
BGE_CLRBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_MASK_PCI_INTR);
CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 0);
bge_ifmedia_upd(ifp);
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
callout_reset(&sc->bge_stat_ch, hz, bge_tick, sc);
return;
}
static void
bge_init(xsc)
void *xsc;
{
struct bge_softc *sc = xsc;
BGE_LOCK(sc);
bge_init_locked(sc);
BGE_UNLOCK(sc);
return;
}
/*
* Set media options.
*/
static int
bge_ifmedia_upd(ifp)
struct ifnet *ifp;
{
struct bge_softc *sc;
struct mii_data *mii;
struct ifmedia *ifm;
sc = ifp->if_softc;
ifm = &sc->bge_ifmedia;
/* If this is a 1000baseX NIC, enable the TBI port. */
if (sc->bge_tbi) {
if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
return(EINVAL);
switch(IFM_SUBTYPE(ifm->ifm_media)) {
case IFM_AUTO:
/*
* The BCM5704 ASIC appears to have a special
* mechanism for programming the autoneg
* advertisement registers in TBI mode.
*/
if (sc->bge_asicrev == BGE_ASICREV_BCM5704) {
uint32_t sgdig;
CSR_WRITE_4(sc, BGE_TX_TBI_AUTONEG, 0);
sgdig = CSR_READ_4(sc, BGE_SGDIG_CFG);
sgdig |= BGE_SGDIGCFG_AUTO|
BGE_SGDIGCFG_PAUSE_CAP|
BGE_SGDIGCFG_ASYM_PAUSE;
CSR_WRITE_4(sc, BGE_SGDIG_CFG,
sgdig|BGE_SGDIGCFG_SEND);
DELAY(5);
CSR_WRITE_4(sc, BGE_SGDIG_CFG, sgdig);
}
break;
case IFM_1000_SX:
if ((ifm->ifm_media & IFM_GMASK) == IFM_FDX) {
BGE_CLRBIT(sc, BGE_MAC_MODE,
BGE_MACMODE_HALF_DUPLEX);
} else {
BGE_SETBIT(sc, BGE_MAC_MODE,
BGE_MACMODE_HALF_DUPLEX);
}
break;
default:
return(EINVAL);
}
return(0);
}
mii = device_get_softc(sc->bge_miibus);
sc->bge_link = 0;
if (mii->mii_instance) {
struct mii_softc *miisc;
for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL;
miisc = LIST_NEXT(miisc, mii_list))
mii_phy_reset(miisc);
}
mii_mediachg(mii);
return(0);
}
/*
* Report current media status.
*/
static void
bge_ifmedia_sts(ifp, ifmr)
struct ifnet *ifp;
struct ifmediareq *ifmr;
{
struct bge_softc *sc;
struct mii_data *mii;
sc = ifp->if_softc;
if (sc->bge_tbi) {
ifmr->ifm_status = IFM_AVALID;
ifmr->ifm_active = IFM_ETHER;
if (CSR_READ_4(sc, BGE_MAC_STS) &
BGE_MACSTAT_TBI_PCS_SYNCHED)
ifmr->ifm_status |= IFM_ACTIVE;
ifmr->ifm_active |= IFM_1000_SX;
if (CSR_READ_4(sc, BGE_MAC_MODE) & BGE_MACMODE_HALF_DUPLEX)
ifmr->ifm_active |= IFM_HDX;
else
ifmr->ifm_active |= IFM_FDX;
return;
}
mii = device_get_softc(sc->bge_miibus);
mii_pollstat(mii);
ifmr->ifm_active = mii->mii_media_active;
ifmr->ifm_status = mii->mii_media_status;
return;
}
static int
bge_ioctl(ifp, command, data)
struct ifnet *ifp;
u_long command;
caddr_t data;
{
struct bge_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *) data;
int mask, error = 0;
struct mii_data *mii;
switch(command) {
case SIOCSIFMTU:
/* Disallow jumbo frames on 5705. */
if (((sc->bge_asicrev == BGE_ASICREV_BCM5705 ||
sc->bge_asicrev == BGE_ASICREV_BCM5750) &&
ifr->ifr_mtu > ETHERMTU) || ifr->ifr_mtu > BGE_JUMBO_MTU)
error = EINVAL;
else {
ifp->if_mtu = ifr->ifr_mtu;
ifp->if_flags &= ~IFF_RUNNING;
bge_init(sc);
}
break;
case SIOCSIFFLAGS:
BGE_LOCK(sc);
if (ifp->if_flags & IFF_UP) {
/*
* If only the state of the PROMISC flag changed,
* then just use the 'set promisc mode' command
* instead of reinitializing the entire NIC. Doing
* a full re-init means reloading the firmware and
* waiting for it to start up, which may take a
* second or two.
*/
if (ifp->if_flags & IFF_RUNNING &&
ifp->if_flags & IFF_PROMISC &&
!(sc->bge_if_flags & IFF_PROMISC)) {
BGE_SETBIT(sc, BGE_RX_MODE,
BGE_RXMODE_RX_PROMISC);
} else if (ifp->if_flags & IFF_RUNNING &&
!(ifp->if_flags & IFF_PROMISC) &&
sc->bge_if_flags & IFF_PROMISC) {
BGE_CLRBIT(sc, BGE_RX_MODE,
BGE_RXMODE_RX_PROMISC);
} else
bge_init_locked(sc);
} else {
if (ifp->if_flags & IFF_RUNNING) {
bge_stop(sc);
}
}
sc->bge_if_flags = ifp->if_flags;
BGE_UNLOCK(sc);
error = 0;
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
if (ifp->if_flags & IFF_RUNNING) {
BGE_LOCK(sc);
bge_setmulti(sc);
BGE_UNLOCK(sc);
error = 0;
}
break;
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
if (sc->bge_tbi) {
error = ifmedia_ioctl(ifp, ifr,
&sc->bge_ifmedia, command);
} else {
mii = device_get_softc(sc->bge_miibus);
error = ifmedia_ioctl(ifp, ifr,
&mii->mii_media, command);
}
break;
case SIOCSIFCAP:
mask = ifr->ifr_reqcap ^ ifp->if_capenable;
/* NB: the code for RX csum offload is disabled for now */
if (mask & IFCAP_TXCSUM) {
ifp->if_capenable ^= IFCAP_TXCSUM;
if (IFCAP_TXCSUM & ifp->if_capenable)
ifp->if_hwassist = BGE_CSUM_FEATURES;
else
ifp->if_hwassist = 0;
}
error = 0;
break;
default:
error = ether_ioctl(ifp, command, data);
break;
}
return(error);
}
static void
bge_watchdog(ifp)
struct ifnet *ifp;
{
struct bge_softc *sc;
sc = ifp->if_softc;
printf("bge%d: watchdog timeout -- resetting\n", sc->bge_unit);
ifp->if_flags &= ~IFF_RUNNING;
bge_init(sc);
ifp->if_oerrors++;
return;
}
/*
* Stop the adapter and free any mbufs allocated to the
* RX and TX lists.
*/
static void
bge_stop(sc)
struct bge_softc *sc;
{
struct ifnet *ifp;
struct ifmedia_entry *ifm;
struct mii_data *mii = NULL;
int mtmp, itmp;
BGE_LOCK_ASSERT(sc);
ifp = &sc->arpcom.ac_if;
if (!sc->bge_tbi)
mii = device_get_softc(sc->bge_miibus);
callout_stop(&sc->bge_stat_ch);
/*
* Disable all of the receiver blocks
*/
BGE_CLRBIT(sc, BGE_RX_MODE, BGE_RXMODE_ENABLE);
BGE_CLRBIT(sc, BGE_RBDI_MODE, BGE_RBDIMODE_ENABLE);
BGE_CLRBIT(sc, BGE_RXLP_MODE, BGE_RXLPMODE_ENABLE);
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750)
BGE_CLRBIT(sc, BGE_RXLS_MODE, BGE_RXLSMODE_ENABLE);
BGE_CLRBIT(sc, BGE_RDBDI_MODE, BGE_RBDIMODE_ENABLE);
BGE_CLRBIT(sc, BGE_RDC_MODE, BGE_RDCMODE_ENABLE);
BGE_CLRBIT(sc, BGE_RBDC_MODE, BGE_RBDCMODE_ENABLE);
/*
* Disable all of the transmit blocks
*/
BGE_CLRBIT(sc, BGE_SRS_MODE, BGE_SRSMODE_ENABLE);
BGE_CLRBIT(sc, BGE_SBDI_MODE, BGE_SBDIMODE_ENABLE);
BGE_CLRBIT(sc, BGE_SDI_MODE, BGE_SDIMODE_ENABLE);
BGE_CLRBIT(sc, BGE_RDMA_MODE, BGE_RDMAMODE_ENABLE);
BGE_CLRBIT(sc, BGE_SDC_MODE, BGE_SDCMODE_ENABLE);
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750)
BGE_CLRBIT(sc, BGE_DMAC_MODE, BGE_DMACMODE_ENABLE);
BGE_CLRBIT(sc, BGE_SBDC_MODE, BGE_SBDCMODE_ENABLE);
/*
* Shut down all of the memory managers and related
* state machines.
*/
BGE_CLRBIT(sc, BGE_HCC_MODE, BGE_HCCMODE_ENABLE);
BGE_CLRBIT(sc, BGE_WDMA_MODE, BGE_WDMAMODE_ENABLE);
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750)
BGE_CLRBIT(sc, BGE_MBCF_MODE, BGE_MBCFMODE_ENABLE);
CSR_WRITE_4(sc, BGE_FTQ_RESET, 0xFFFFFFFF);
CSR_WRITE_4(sc, BGE_FTQ_RESET, 0);
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750) {
BGE_CLRBIT(sc, BGE_BMAN_MODE, BGE_BMANMODE_ENABLE);
BGE_CLRBIT(sc, BGE_MARB_MODE, BGE_MARBMODE_ENABLE);
}
/* Disable host interrupts. */
BGE_SETBIT(sc, BGE_PCI_MISC_CTL, BGE_PCIMISCCTL_MASK_PCI_INTR);
CSR_WRITE_4(sc, BGE_MBX_IRQ0_LO, 1);
/*
* Tell firmware we're shutting down.
*/
BGE_CLRBIT(sc, BGE_MODE_CTL, BGE_MODECTL_STACKUP);
/* Free the RX lists. */
bge_free_rx_ring_std(sc);
/* Free jumbo RX list. */
if (sc->bge_asicrev != BGE_ASICREV_BCM5705 &&
sc->bge_asicrev != BGE_ASICREV_BCM5750)
bge_free_rx_ring_jumbo(sc);
/* Free TX buffers. */
bge_free_tx_ring(sc);
/*
* Isolate/power down the PHY, but leave the media selection
* unchanged so that things will be put back to normal when
* we bring the interface back up.
*/
if (!sc->bge_tbi) {
itmp = ifp->if_flags;
ifp->if_flags |= IFF_UP;
ifm = mii->mii_media.ifm_cur;
mtmp = ifm->ifm_media;
ifm->ifm_media = IFM_ETHER|IFM_NONE;
mii_mediachg(mii);
ifm->ifm_media = mtmp;
ifp->if_flags = itmp;
}
sc->bge_link = 0;
sc->bge_tx_saved_considx = BGE_TXCONS_UNSET;
ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
return;
}
/*
* Stop all chip I/O so that the kernel's probe routines don't
* get confused by errant DMAs when rebooting.
*/
static void
bge_shutdown(dev)
device_t dev;
{
struct bge_softc *sc;
sc = device_get_softc(dev);
BGE_LOCK(sc);
bge_stop(sc);
bge_reset(sc);
BGE_UNLOCK(sc);
return;
}
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