1/*
2 * Copyright (c) 1995, David Greenman
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $Id$
28 */
29
30/*
31 * Intel EtherExpress Pro/100B PCI Fast Ethernet driver
32 */
33
34#include "bpfilter.h"
35

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83 struct fxp_cb_tx *cbl_base; /* base of TxCB list */
84 struct fxp_cb_tx *cbl_first; /* first active TxCB in list */
85 struct fxp_cb_tx *cbl_last; /* last active TxCB in list */
86 struct mbuf *rfa_headm; /* first mbuf in receive frame area */
87 struct mbuf *rfa_tailm; /* last mbuf in receive frame area */
88 struct fxp_stats *fxp_stats; /* Pointer to interface stats */
89 int tx_queued; /* # of active TxCB's */
90 int promisc_mode; /* promiscuous mode enabled */
91};
92
93static u_long fxp_count;
94
95/*
96 * Template for default configuration parameters.
97 * See struct fxp_cb_config for the bit definitions.
98 */

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129static char *fxp_probe __P((pcici_t, pcidi_t));
130static void fxp_attach __P((pcici_t, int));
131static void fxp_intr __P((void *));
132static void fxp_start __P((struct ifnet *));
133static int fxp_ioctl __P((struct ifnet *, int, caddr_t));
134static void fxp_init __P((void *));
135static void fxp_stop __P((struct fxp_softc *));
136static void fxp_watchdog __P((struct ifnet *));
137static void fxp_get_macaddr __P((struct fxp_softc *));
138static int fxp_add_rfabuf __P((struct fxp_softc *, struct mbuf *));
139static void fxp_shutdown __P((int, void *));
140
141timeout_t fxp_stats_update;
142
143static struct pci_device fxp_device = {
144 "fxp",
145 fxp_probe,
146 fxp_attach,
147 &fxp_count,
148 NULL

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203 */
204static char *
205fxp_probe(config_id, device_id)
206 pcici_t config_id;
207 pcidi_t device_id;
208{
209 if (((device_id & 0xffff) == FXP_VENDORID_INTEL) &&
210 ((device_id >> 16) & 0xffff) == FXP_DEVICEID_i82557)
211 return ("Intel EtherExpress Pro/100B Fast Ethernet");
212
213 return NULL;
214}
215
216/*
217 * Allocate data structures and attach the device.
218 */
219static void
220fxp_attach(config_id, unit)
221 pcici_t config_id;
222 int unit;
223{
224 struct fxp_softc *sc;
225 struct ifnet *ifp;
226 vm_offset_t pbase;
227 int s, i;
228
229 sc = malloc(sizeof(struct fxp_softc), M_DEVBUF, M_NOWAIT);
230 if (sc == NULL)
231 return;
232 bzero(sc, sizeof(struct fxp_softc));
233
234 s = splimp();
235

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270 * Pre-allocate our receive buffers.
271 */
272 for (i = 0; i < FXP_NRFABUFS; i++) {
273 if (fxp_add_rfabuf(sc, NULL) != 0) {
274 goto malloc_fail;
275 }
276 }
277
278 ifp = &sc->arpcom.ac_if;
279 ifp->if_softc = sc;
280 ifp->if_unit = unit;
281 ifp->if_name = "fxp";
282 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
283 ifp->if_ioctl = fxp_ioctl;
284 ifp->if_output = ether_output;
285 ifp->if_start = fxp_start;
286 ifp->if_watchdog = fxp_watchdog;
287 ifp->if_baudrate = 100000000;
288 ifp->if_init = fxp_init;
289
290 fxp_get_macaddr(sc);
291 printf("fxp%d: Ethernet address %6D\n", unit,
292 sc->arpcom.ac_enaddr, ":");
293
294 /*
295 * Attach the interface.
296 */
297 if_attach(ifp);
298 ether_ifattach(ifp);
299
300#if NBPFILTER > 0

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323 m_freem(sc->rfa_headm);
324fail:
325 if (sc)
326 free(sc, M_DEVBUF);
327 splx(s);
328}
329
330/*
331 * Read station (MAC) address from serial EEPROM. Basically, you
332 * manually shift in the read opcode (one bit at a time) and then
333 * shift in the address, and then you shift out the data (all of
334 * this one bit at a time). The word size is 16 bits, so you have
335 * to provide the address for every 16 bits of data. The MAC address
336 * is in the first 3 words (6 bytes total).
337 */
338static void
339fxp_get_macaddr(sc)
340 struct fxp_softc *sc;
341{
342 struct fxp_csr *csr;
343 u_short reg, *data;
344 int i, x;
345
346 csr = sc->csr;
347 data = (u_short *)sc->arpcom.ac_enaddr;
348
349 for (i = 0; i < 3; i++) {
350 csr->eeprom_control = FXP_EEPROM_EECS;
351 /*
352 * Shift in read opcode.
353 */
354 for (x = 3; x > 0; x--) {
355 if (FXP_EEPROM_OPC_READ & (1 << (x - 1))) {
356 reg = FXP_EEPROM_EECS | FXP_EEPROM_EEDI;
357 } else {

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362 DELAY(1);
363 csr->eeprom_control = reg;
364 DELAY(1);
365 }
366 /*
367 * Shift in address.
368 */
369 for (x = 6; x > 0; x--) {
370 if (i & (1 << (x - 1))) {
371 reg = FXP_EEPROM_EECS | FXP_EEPROM_EEDI;
372 } else {
373 reg = FXP_EEPROM_EECS;
374 }
375 csr->eeprom_control = reg;
376 csr->eeprom_control = reg | FXP_EEPROM_EESK;
377 DELAY(1);
378 csr->eeprom_control = reg;

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859 cbp->tx_dma_bytecount = 0; /* (no) tx DMA max */
860 cbp->dma_bce = 0; /* (disable) dma max counters */
861 cbp->late_scb = 0; /* (don't) defer SCB update */
862 cbp->tno_int = 0; /* (disable) tx not okay interrupt */
863 cbp->ci_int = 0; /* interrupt on CU not active */
864 cbp->save_bf = prm; /* save bad frames */
865 cbp->disc_short_rx = !prm; /* discard short packets */
866 cbp->underrun_retry = 1; /* retry mode (1) on DMA underrun */
867 cbp->mediatype = 1; /* (MII) interface mode */
868 cbp->nsai = 1; /* (don't) disable source addr insert */
869 cbp->preamble_length = 2; /* (7 byte) preamble */
870 cbp->loopback = 0; /* (don't) loopback */
871 cbp->linear_priority = 0; /* (normal CSMA/CD operation) */
872 cbp->linear_pri_mode = 0; /* (wait after xmit only) */
873 cbp->interfrm_spacing = 6; /* (96 bits of) interframe spacing */
874 cbp->promiscuous = prm; /* promiscuous mode */
875 cbp->bcast_disable = 0; /* (don't) disable broadcasts */

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936
937 /*
938 * Initialize receiver buffer area - RFA.
939 */
940 fxp_scb_wait(csr);
941 csr->scb_general = vtophys(sc->rfa_headm->m_ext.ext_buf);
942 csr->scb_command = FXP_SCB_COMMAND_RU_START;
943
944 ifp->if_flags |= IFF_RUNNING;
945 ifp->if_flags &= ~IFF_OACTIVE;
946 splx(s);
947
948 /*
949 * Start stats updater.
950 */
951 timeout(fxp_stats_update, sc, hz);

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1009 sc->rfa_headm = m;
1010 }
1011 sc->rfa_tailm = m;
1012
1013 return (m == oldm);
1014}
1015
1016static int
1017fxp_ioctl(ifp, command, data)
1018 struct ifnet *ifp;
1019 int command;
1020 caddr_t data;
1021{
1022 struct ifaddr *ifa = (struct ifaddr *) data;
1023 struct fxp_softc *sc = ifp->if_softc;
1024 struct ifreq *ifr = (struct ifreq *) data;

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