jme: RX interrupt to ~6000Hz, TX interrupt to ~4000Hz
[dragonfly.git] / sys / dev / netif / jme / if_jme.c
CommitLineData
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1/*-
2 * Copyright (c) 2008, Pyun YongHyeon <yongari@FreeBSD.org>
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
9 * notice unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * $FreeBSD: src/sys/dev/jme/if_jme.c,v 1.2 2008/07/18 04:20:48 yongari Exp $
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28 */
29
9de40864 30#include "opt_polling.h"
93bfe1b8 31#include "opt_jme.h"
9de40864 32
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33#include <sys/param.h>
34#include <sys/endian.h>
35#include <sys/kernel.h>
36#include <sys/bus.h>
37#include <sys/interrupt.h>
38#include <sys/malloc.h>
39#include <sys/proc.h>
40#include <sys/rman.h>
41#include <sys/serialize.h>
31f0d5a2 42#include <sys/serialize2.h>
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43#include <sys/socket.h>
44#include <sys/sockio.h>
45#include <sys/sysctl.h>
46
47#include <net/ethernet.h>
48#include <net/if.h>
49#include <net/bpf.h>
50#include <net/if_arp.h>
51#include <net/if_dl.h>
52#include <net/if_media.h>
53#include <net/ifq_var.h>
24dd1705 54#include <net/toeplitz.h>
a6acc6e2 55#include <net/toeplitz2.h>
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56#include <net/vlan/if_vlan_var.h>
57#include <net/vlan/if_vlan_ether.h>
58
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59#include <netinet/ip.h>
60#include <netinet/tcp.h>
a6acc6e2 61
76fbb0b9 62#include <dev/netif/mii_layer/miivar.h>
dbe37f03 63#include <dev/netif/mii_layer/jmphyreg.h>
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64
65#include <bus/pci/pcireg.h>
66#include <bus/pci/pcivar.h>
67#include <bus/pci/pcidevs.h>
68
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69#include <dev/netif/jme/if_jmereg.h>
70#include <dev/netif/jme/if_jmevar.h>
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71
72#include "miibus_if.h"
73
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74#define JME_TX_SERIALIZE 1
75#define JME_RX_SERIALIZE 2
76
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77#define JME_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
78
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79#ifdef JME_RSS_DEBUG
80#define JME_RSS_DPRINTF(sc, lvl, fmt, ...) \
81do { \
66f75939 82 if ((sc)->jme_rss_debug >= (lvl)) \
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83 if_printf(&(sc)->arpcom.ac_if, fmt, __VA_ARGS__); \
84} while (0)
85#else /* !JME_RSS_DEBUG */
86#define JME_RSS_DPRINTF(sc, lvl, fmt, ...) ((void)0)
87#endif /* JME_RSS_DEBUG */
88
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89static int jme_probe(device_t);
90static int jme_attach(device_t);
91static int jme_detach(device_t);
92static int jme_shutdown(device_t);
93static int jme_suspend(device_t);
94static int jme_resume(device_t);
95
96static int jme_miibus_readreg(device_t, int, int);
97static int jme_miibus_writereg(device_t, int, int, int);
98static void jme_miibus_statchg(device_t);
99
100static void jme_init(void *);
101static int jme_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
102static void jme_start(struct ifnet *);
103static void jme_watchdog(struct ifnet *);
104static void jme_mediastatus(struct ifnet *, struct ifmediareq *);
105static int jme_mediachange(struct ifnet *);
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106#ifdef DEVICE_POLLING
107static void jme_poll(struct ifnet *, enum poll_cmd, int);
108#endif
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109static void jme_serialize(struct ifnet *, enum ifnet_serialize);
110static void jme_deserialize(struct ifnet *, enum ifnet_serialize);
111static int jme_tryserialize(struct ifnet *, enum ifnet_serialize);
112#ifdef INVARIANTS
113static void jme_serialize_assert(struct ifnet *, enum ifnet_serialize,
114 boolean_t);
115#endif
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116
117static void jme_intr(void *);
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118static void jme_msix_tx(void *);
119static void jme_msix_rx(void *);
76fbb0b9 120static void jme_txeof(struct jme_softc *);
dea2452a 121static void jme_rxeof(struct jme_rxdata *, int);
4447c752 122static void jme_rx_intr(struct jme_softc *, uint32_t);
76fbb0b9 123
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124static int jme_msix_setup(device_t);
125static void jme_msix_teardown(device_t, int);
126static int jme_intr_setup(device_t);
127static void jme_intr_teardown(device_t);
128static void jme_msix_try_alloc(device_t);
129static void jme_msix_free(device_t);
130static int jme_intr_alloc(device_t);
131static void jme_intr_free(device_t);
76fbb0b9 132static int jme_dma_alloc(struct jme_softc *);
0b3414d9 133static void jme_dma_free(struct jme_softc *);
dea2452a 134static int jme_init_rx_ring(struct jme_rxdata *);
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135static void jme_init_tx_ring(struct jme_softc *);
136static void jme_init_ssb(struct jme_softc *);
dea2452a 137static int jme_newbuf(struct jme_rxdata *, struct jme_rxdesc *, int);
76fbb0b9 138static int jme_encap(struct jme_softc *, struct mbuf **);
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139static void jme_rxpkt(struct jme_rxdata *);
140static int jme_rxring_dma_alloc(struct jme_rxdata *);
141static int jme_rxbuf_dma_alloc(struct jme_rxdata *);
064b75ed 142static int jme_rxbuf_dma_filter(void *, bus_addr_t);
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143
144static void jme_tick(void *);
145static void jme_stop(struct jme_softc *);
146static void jme_reset(struct jme_softc *);
58880b0d 147static void jme_set_msinum(struct jme_softc *);
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148static void jme_set_vlan(struct jme_softc *);
149static void jme_set_filter(struct jme_softc *);
150static void jme_stop_tx(struct jme_softc *);
151static void jme_stop_rx(struct jme_softc *);
152static void jme_mac_config(struct jme_softc *);
153static void jme_reg_macaddr(struct jme_softc *, uint8_t[]);
154static int jme_eeprom_macaddr(struct jme_softc *, uint8_t[]);
155static int jme_eeprom_read_byte(struct jme_softc *, uint8_t, uint8_t *);
156#ifdef notyet
157static void jme_setwol(struct jme_softc *);
158static void jme_setlinkspeed(struct jme_softc *);
159#endif
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160static void jme_set_tx_coal(struct jme_softc *);
161static void jme_set_rx_coal(struct jme_softc *);
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162static void jme_enable_rss(struct jme_softc *);
163static void jme_disable_rss(struct jme_softc *);
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164static void jme_serialize_skipmain(struct jme_softc *);
165static void jme_deserialize_skipmain(struct jme_softc *);
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166
167static void jme_sysctl_node(struct jme_softc *);
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168static int jme_sysctl_tx_coal_to(SYSCTL_HANDLER_ARGS);
169static int jme_sysctl_tx_coal_pkt(SYSCTL_HANDLER_ARGS);
170static int jme_sysctl_rx_coal_to(SYSCTL_HANDLER_ARGS);
171static int jme_sysctl_rx_coal_pkt(SYSCTL_HANDLER_ARGS);
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172
173/*
174 * Devices supported by this driver.
175 */
176static const struct jme_dev {
177 uint16_t jme_vendorid;
178 uint16_t jme_deviceid;
3a5f3f36 179 uint32_t jme_caps;
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180 const char *jme_name;
181} jme_devs[] = {
44e8c66c 182 { PCI_VENDOR_JMICRON, PCI_PRODUCT_JMICRON_JMC250,
3a5f3f36 183 JME_CAP_JUMBO,
76fbb0b9 184 "JMicron Inc, JMC250 Gigabit Ethernet" },
44e8c66c 185 { PCI_VENDOR_JMICRON, PCI_PRODUCT_JMICRON_JMC260,
3a5f3f36 186 JME_CAP_FASTETH,
76fbb0b9 187 "JMicron Inc, JMC260 Fast Ethernet" },
3a5f3f36 188 { 0, 0, 0, NULL }
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189};
190
191static device_method_t jme_methods[] = {
192 /* Device interface. */
193 DEVMETHOD(device_probe, jme_probe),
194 DEVMETHOD(device_attach, jme_attach),
195 DEVMETHOD(device_detach, jme_detach),
196 DEVMETHOD(device_shutdown, jme_shutdown),
197 DEVMETHOD(device_suspend, jme_suspend),
198 DEVMETHOD(device_resume, jme_resume),
199
200 /* Bus interface. */
201 DEVMETHOD(bus_print_child, bus_generic_print_child),
202 DEVMETHOD(bus_driver_added, bus_generic_driver_added),
203
204 /* MII interface. */
205 DEVMETHOD(miibus_readreg, jme_miibus_readreg),
206 DEVMETHOD(miibus_writereg, jme_miibus_writereg),
207 DEVMETHOD(miibus_statchg, jme_miibus_statchg),
208
209 { NULL, NULL }
210};
211
212static driver_t jme_driver = {
213 "jme",
214 jme_methods,
215 sizeof(struct jme_softc)
216};
217
218static devclass_t jme_devclass;
219
220DECLARE_DUMMY_MODULE(if_jme);
221MODULE_DEPEND(if_jme, miibus, 1, 1, 1);
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222DRIVER_MODULE(if_jme, pci, jme_driver, jme_devclass, NULL, NULL);
223DRIVER_MODULE(miibus, jme, miibus_driver, miibus_devclass, NULL, NULL);
76fbb0b9 224
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225static const struct {
226 uint32_t jme_coal;
227 uint32_t jme_comp;
58880b0d 228 uint32_t jme_empty;
4447c752 229} jme_rx_status[JME_NRXRING_MAX] = {
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230 { INTR_RXQ0_COAL | INTR_RXQ0_COAL_TO, INTR_RXQ0_COMP,
231 INTR_RXQ0_DESC_EMPTY },
232 { INTR_RXQ1_COAL | INTR_RXQ1_COAL_TO, INTR_RXQ1_COMP,
233 INTR_RXQ1_DESC_EMPTY },
234 { INTR_RXQ2_COAL | INTR_RXQ2_COAL_TO, INTR_RXQ2_COMP,
235 INTR_RXQ2_DESC_EMPTY },
236 { INTR_RXQ3_COAL | INTR_RXQ3_COAL_TO, INTR_RXQ3_COMP,
237 INTR_RXQ3_DESC_EMPTY }
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238};
239
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240static int jme_rx_desc_count = JME_RX_DESC_CNT_DEF;
241static int jme_tx_desc_count = JME_TX_DESC_CNT_DEF;
6afef6ab 242static int jme_rx_ring_count = 0;
3eba890a 243static int jme_msi_enable = 1;
58880b0d 244static int jme_msix_enable = 1;
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245
246TUNABLE_INT("hw.jme.rx_desc_count", &jme_rx_desc_count);
247TUNABLE_INT("hw.jme.tx_desc_count", &jme_tx_desc_count);
413d06bb 248TUNABLE_INT("hw.jme.rx_ring_count", &jme_rx_ring_count);
3eba890a 249TUNABLE_INT("hw.jme.msi.enable", &jme_msi_enable);
58880b0d 250TUNABLE_INT("hw.jme.msix.enable", &jme_msix_enable);
83b03786 251
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252static __inline void
253jme_setup_rxdesc(struct jme_rxdesc *rxd)
254{
255 struct jme_desc *desc;
256
257 desc = rxd->rx_desc;
258 desc->buflen = htole32(MCLBYTES);
259 desc->addr_lo = htole32(JME_ADDR_LO(rxd->rx_paddr));
260 desc->addr_hi = htole32(JME_ADDR_HI(rxd->rx_paddr));
261 desc->flags = htole32(JME_RD_OWN | JME_RD_INTR | JME_RD_64BIT);
262}
263
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264/*
265 * Read a PHY register on the MII of the JMC250.
266 */
267static int
268jme_miibus_readreg(device_t dev, int phy, int reg)
269{
270 struct jme_softc *sc = device_get_softc(dev);
271 uint32_t val;
272 int i;
273
274 /* For FPGA version, PHY address 0 should be ignored. */
ec7e787b 275 if (sc->jme_caps & JME_CAP_FPGA) {
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276 if (phy == 0)
277 return (0);
278 } else {
279 if (sc->jme_phyaddr != phy)
280 return (0);
281 }
282
283 CSR_WRITE_4(sc, JME_SMI, SMI_OP_READ | SMI_OP_EXECUTE |
284 SMI_PHY_ADDR(phy) | SMI_REG_ADDR(reg));
285
286 for (i = JME_PHY_TIMEOUT; i > 0; i--) {
287 DELAY(1);
288 if (((val = CSR_READ_4(sc, JME_SMI)) & SMI_OP_EXECUTE) == 0)
289 break;
290 }
291 if (i == 0) {
292 device_printf(sc->jme_dev, "phy read timeout: "
293 "phy %d, reg %d\n", phy, reg);
294 return (0);
295 }
296
297 return ((val & SMI_DATA_MASK) >> SMI_DATA_SHIFT);
298}
299
300/*
301 * Write a PHY register on the MII of the JMC250.
302 */
303static int
304jme_miibus_writereg(device_t dev, int phy, int reg, int val)
305{
306 struct jme_softc *sc = device_get_softc(dev);
307 int i;
308
309 /* For FPGA version, PHY address 0 should be ignored. */
ec7e787b 310 if (sc->jme_caps & JME_CAP_FPGA) {
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311 if (phy == 0)
312 return (0);
313 } else {
314 if (sc->jme_phyaddr != phy)
315 return (0);
316 }
317
318 CSR_WRITE_4(sc, JME_SMI, SMI_OP_WRITE | SMI_OP_EXECUTE |
319 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
320 SMI_PHY_ADDR(phy) | SMI_REG_ADDR(reg));
321
322 for (i = JME_PHY_TIMEOUT; i > 0; i--) {
323 DELAY(1);
324 if (((val = CSR_READ_4(sc, JME_SMI)) & SMI_OP_EXECUTE) == 0)
325 break;
326 }
327 if (i == 0) {
328 device_printf(sc->jme_dev, "phy write timeout: "
329 "phy %d, reg %d\n", phy, reg);
330 }
331
332 return (0);
333}
334
335/*
336 * Callback from MII layer when media changes.
337 */
338static void
339jme_miibus_statchg(device_t dev)
340{
341 struct jme_softc *sc = device_get_softc(dev);
342 struct ifnet *ifp = &sc->arpcom.ac_if;
343 struct mii_data *mii;
344 struct jme_txdesc *txd;
345 bus_addr_t paddr;
4447c752 346 int i, r;
76fbb0b9 347
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348 if (sc->jme_in_tick)
349 jme_serialize_skipmain(sc);
31f0d5a2 350 ASSERT_IFNET_SERIALIZED_ALL(ifp);
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351
352 if ((ifp->if_flags & IFF_RUNNING) == 0)
cccc3955 353 goto done;
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354
355 mii = device_get_softc(sc->jme_miibus);
356
cccc3955 357 sc->jme_has_link = FALSE;
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358 if ((mii->mii_media_status & IFM_AVALID) != 0) {
359 switch (IFM_SUBTYPE(mii->mii_media_active)) {
360 case IFM_10_T:
361 case IFM_100_TX:
cccc3955 362 sc->jme_has_link = TRUE;
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363 break;
364 case IFM_1000_T:
ec7e787b 365 if (sc->jme_caps & JME_CAP_FASTETH)
76fbb0b9 366 break;
cccc3955 367 sc->jme_has_link = TRUE;
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368 break;
369 default:
370 break;
371 }
372 }
373
374 /*
375 * Disabling Rx/Tx MACs have a side-effect of resetting
376 * JME_TXNDA/JME_RXNDA register to the first address of
377 * Tx/Rx descriptor address. So driver should reset its
378 * internal procucer/consumer pointer and reclaim any
379 * allocated resources. Note, just saving the value of
380 * JME_TXNDA and JME_RXNDA registers before stopping MAC
381 * and restoring JME_TXNDA/JME_RXNDA register is not
382 * sufficient to make sure correct MAC state because
383 * stopping MAC operation can take a while and hardware
384 * might have updated JME_TXNDA/JME_RXNDA registers
385 * during the stop operation.
386 */
387
388 /* Disable interrupts */
389 CSR_WRITE_4(sc, JME_INTR_MASK_CLR, JME_INTRS);
390
391 /* Stop driver */
392 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
393 ifp->if_timer = 0;
394 callout_stop(&sc->jme_tick_ch);
395
396 /* Stop receiver/transmitter. */
397 jme_stop_rx(sc);
398 jme_stop_tx(sc);
399
7b040092 400 for (r = 0; r < sc->jme_cdata.jme_rx_ring_cnt; ++r) {
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401 struct jme_rxdata *rdata = &sc->jme_cdata.jme_rx_data[r];
402
dea2452a 403 jme_rxeof(rdata, -1);
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404 if (rdata->jme_rxhead != NULL)
405 m_freem(rdata->jme_rxhead);
dea2452a 406 JME_RXCHAIN_RESET(rdata);
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407
408 /*
409 * Reuse configured Rx descriptors and reset
410 * procuder/consumer index.
411 */
412 rdata->jme_rx_cons = 0;
413 }
6afef6ab 414 if (JME_ENABLE_HWRSS(sc))
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415 jme_enable_rss(sc);
416 else
417 jme_disable_rss(sc);
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418
419 jme_txeof(sc);
420 if (sc->jme_cdata.jme_tx_cnt != 0) {
421 /* Remove queued packets for transmit. */
b020bb10 422 for (i = 0; i < sc->jme_cdata.jme_tx_desc_cnt; i++) {
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423 txd = &sc->jme_cdata.jme_txdesc[i];
424 if (txd->tx_m != NULL) {
425 bus_dmamap_unload(
426 sc->jme_cdata.jme_tx_tag,
427 txd->tx_dmamap);
428 m_freem(txd->tx_m);
429 txd->tx_m = NULL;
430 txd->tx_ndesc = 0;
431 ifp->if_oerrors++;
432 }
433 }
434 }
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435 jme_init_tx_ring(sc);
436
437 /* Initialize shadow status block. */
438 jme_init_ssb(sc);
439
440 /* Program MAC with resolved speed/duplex/flow-control. */
cccc3955 441 if (sc->jme_has_link) {
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442 jme_mac_config(sc);
443
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444 CSR_WRITE_4(sc, JME_TXCSR, sc->jme_txcsr);
445
446 /* Set Tx ring address to the hardware. */
7405bec3 447 paddr = sc->jme_cdata.jme_tx_ring_paddr;
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448 CSR_WRITE_4(sc, JME_TXDBA_HI, JME_ADDR_HI(paddr));
449 CSR_WRITE_4(sc, JME_TXDBA_LO, JME_ADDR_LO(paddr));
450
7b040092 451 for (r = 0; r < sc->jme_cdata.jme_rx_ring_cnt; ++r) {
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452 CSR_WRITE_4(sc, JME_RXCSR,
453 sc->jme_rxcsr | RXCSR_RXQ_N_SEL(r));
454
455 /* Set Rx ring address to the hardware. */
456 paddr = sc->jme_cdata.jme_rx_data[r].jme_rx_ring_paddr;
457 CSR_WRITE_4(sc, JME_RXDBA_HI, JME_ADDR_HI(paddr));
458 CSR_WRITE_4(sc, JME_RXDBA_LO, JME_ADDR_LO(paddr));
459 }
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460
461 /* Restart receiver/transmitter. */
462 CSR_WRITE_4(sc, JME_RXCSR, sc->jme_rxcsr | RXCSR_RX_ENB |
463 RXCSR_RXQ_START);
464 CSR_WRITE_4(sc, JME_TXCSR, sc->jme_txcsr | TXCSR_TX_ENB);
465 }
466
467 ifp->if_flags |= IFF_RUNNING;
468 ifp->if_flags &= ~IFF_OACTIVE;
469 callout_reset(&sc->jme_tick_ch, hz, jme_tick, sc);
470
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471#ifdef DEVICE_POLLING
472 if (!(ifp->if_flags & IFF_POLLING))
473#endif
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474 /* Reenable interrupts. */
475 CSR_WRITE_4(sc, JME_INTR_MASK_SET, JME_INTRS);
cccc3955
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476
477done:
478 if (sc->jme_in_tick)
479 jme_deserialize_skipmain(sc);
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480}
481
482/*
483 * Get the current interface media status.
484 */
485static void
486jme_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
487{
488 struct jme_softc *sc = ifp->if_softc;
489 struct mii_data *mii = device_get_softc(sc->jme_miibus);
490
31f0d5a2 491 ASSERT_IFNET_SERIALIZED_ALL(ifp);
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492
493 mii_pollstat(mii);
494 ifmr->ifm_status = mii->mii_media_status;
495 ifmr->ifm_active = mii->mii_media_active;
496}
497
498/*
499 * Set hardware to newly-selected media.
500 */
501static int
502jme_mediachange(struct ifnet *ifp)
503{
504 struct jme_softc *sc = ifp->if_softc;
505 struct mii_data *mii = device_get_softc(sc->jme_miibus);
506 int error;
507
31f0d5a2 508 ASSERT_IFNET_SERIALIZED_ALL(ifp);
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509
510 if (mii->mii_instance != 0) {
511 struct mii_softc *miisc;
512
513 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
514 mii_phy_reset(miisc);
515 }
516 error = mii_mediachg(mii);
517
518 return (error);
519}
520
521static int
522jme_probe(device_t dev)
523{
524 const struct jme_dev *sp;
525 uint16_t vid, did;
526
527 vid = pci_get_vendor(dev);
528 did = pci_get_device(dev);
529 for (sp = jme_devs; sp->jme_name != NULL; ++sp) {
530 if (vid == sp->jme_vendorid && did == sp->jme_deviceid) {
3a5f3f36
SZ
531 struct jme_softc *sc = device_get_softc(dev);
532
533 sc->jme_caps = sp->jme_caps;
76fbb0b9 534 device_set_desc(dev, sp->jme_name);
76fbb0b9
SZ
535 return (0);
536 }
537 }
538 return (ENXIO);
539}
540
541static int
542jme_eeprom_read_byte(struct jme_softc *sc, uint8_t addr, uint8_t *val)
543{
544 uint32_t reg;
545 int i;
546
547 *val = 0;
548 for (i = JME_TIMEOUT; i > 0; i--) {
549 reg = CSR_READ_4(sc, JME_SMBCSR);
550 if ((reg & SMBCSR_HW_BUSY_MASK) == SMBCSR_HW_IDLE)
551 break;
552 DELAY(1);
553 }
554
555 if (i == 0) {
556 device_printf(sc->jme_dev, "EEPROM idle timeout!\n");
557 return (ETIMEDOUT);
558 }
559
560 reg = ((uint32_t)addr << SMBINTF_ADDR_SHIFT) & SMBINTF_ADDR_MASK;
561 CSR_WRITE_4(sc, JME_SMBINTF, reg | SMBINTF_RD | SMBINTF_CMD_TRIGGER);
562 for (i = JME_TIMEOUT; i > 0; i--) {
563 DELAY(1);
564 reg = CSR_READ_4(sc, JME_SMBINTF);
565 if ((reg & SMBINTF_CMD_TRIGGER) == 0)
566 break;
567 }
568
569 if (i == 0) {
570 device_printf(sc->jme_dev, "EEPROM read timeout!\n");
571 return (ETIMEDOUT);
572 }
573
574 reg = CSR_READ_4(sc, JME_SMBINTF);
575 *val = (reg & SMBINTF_RD_DATA_MASK) >> SMBINTF_RD_DATA_SHIFT;
576
577 return (0);
578}
579
580static int
581jme_eeprom_macaddr(struct jme_softc *sc, uint8_t eaddr[])
582{
583 uint8_t fup, reg, val;
584 uint32_t offset;
585 int match;
586
587 offset = 0;
588 if (jme_eeprom_read_byte(sc, offset++, &fup) != 0 ||
589 fup != JME_EEPROM_SIG0)
590 return (ENOENT);
591 if (jme_eeprom_read_byte(sc, offset++, &fup) != 0 ||
592 fup != JME_EEPROM_SIG1)
593 return (ENOENT);
594 match = 0;
595 do {
596 if (jme_eeprom_read_byte(sc, offset, &fup) != 0)
597 break;
09927fe6
SZ
598 if (JME_EEPROM_MKDESC(JME_EEPROM_FUNC0, JME_EEPROM_PAGE_BAR1) ==
599 (fup & (JME_EEPROM_FUNC_MASK | JME_EEPROM_PAGE_MASK))) {
76fbb0b9
SZ
600 if (jme_eeprom_read_byte(sc, offset + 1, &reg) != 0)
601 break;
602 if (reg >= JME_PAR0 &&
603 reg < JME_PAR0 + ETHER_ADDR_LEN) {
604 if (jme_eeprom_read_byte(sc, offset + 2,
605 &val) != 0)
606 break;
607 eaddr[reg - JME_PAR0] = val;
608 match++;
609 }
610 }
09927fe6
SZ
611 /* Check for the end of EEPROM descriptor. */
612 if ((fup & JME_EEPROM_DESC_END) == JME_EEPROM_DESC_END)
613 break;
76fbb0b9
SZ
614 /* Try next eeprom descriptor. */
615 offset += JME_EEPROM_DESC_BYTES;
616 } while (match != ETHER_ADDR_LEN && offset < JME_EEPROM_END);
617
618 if (match == ETHER_ADDR_LEN)
619 return (0);
620
621 return (ENOENT);
622}
623
624static void
625jme_reg_macaddr(struct jme_softc *sc, uint8_t eaddr[])
626{
627 uint32_t par0, par1;
628
629 /* Read station address. */
630 par0 = CSR_READ_4(sc, JME_PAR0);
631 par1 = CSR_READ_4(sc, JME_PAR1);
632 par1 &= 0xFFFF;
633 if ((par0 == 0 && par1 == 0) || (par0 & 0x1)) {
634 device_printf(sc->jme_dev,
635 "generating fake ethernet address.\n");
636 par0 = karc4random();
637 /* Set OUI to JMicron. */
638 eaddr[0] = 0x00;
639 eaddr[1] = 0x1B;
640 eaddr[2] = 0x8C;
641 eaddr[3] = (par0 >> 16) & 0xff;
642 eaddr[4] = (par0 >> 8) & 0xff;
643 eaddr[5] = par0 & 0xff;
644 } else {
645 eaddr[0] = (par0 >> 0) & 0xFF;
646 eaddr[1] = (par0 >> 8) & 0xFF;
647 eaddr[2] = (par0 >> 16) & 0xFF;
648 eaddr[3] = (par0 >> 24) & 0xFF;
649 eaddr[4] = (par1 >> 0) & 0xFF;
650 eaddr[5] = (par1 >> 8) & 0xFF;
651 }
652}
653
654static int
655jme_attach(device_t dev)
656{
657 struct jme_softc *sc = device_get_softc(dev);
658 struct ifnet *ifp = &sc->arpcom.ac_if;
659 uint32_t reg;
b249905b
SZ
660 uint16_t did;
661 uint8_t pcie_ptr, rev;
7b040092 662 int error = 0, i, j, rx_desc_cnt;
76fbb0b9
SZ
663 uint8_t eaddr[ETHER_ADDR_LEN];
664
31f0d5a2
SZ
665 lwkt_serialize_init(&sc->jme_serialize);
666 lwkt_serialize_init(&sc->jme_cdata.jme_tx_serialize);
667 for (i = 0; i < JME_NRXRING_MAX; ++i) {
668 lwkt_serialize_init(
669 &sc->jme_cdata.jme_rx_data[i].jme_rx_serialize);
670 }
671
7b040092 672 rx_desc_cnt = device_getenv_int(dev, "rx_desc_count",
1cc217a9 673 jme_rx_desc_count);
7b040092
SZ
674 rx_desc_cnt = roundup(rx_desc_cnt, JME_NDESC_ALIGN);
675 if (rx_desc_cnt > JME_NDESC_MAX)
676 rx_desc_cnt = JME_NDESC_MAX;
69325526 677
b020bb10 678 sc->jme_cdata.jme_tx_desc_cnt = device_getenv_int(dev, "tx_desc_count",
1cc217a9 679 jme_tx_desc_count);
b020bb10
SZ
680 sc->jme_cdata.jme_tx_desc_cnt = roundup(sc->jme_cdata.jme_tx_desc_cnt,
681 JME_NDESC_ALIGN);
682 if (sc->jme_cdata.jme_tx_desc_cnt > JME_NDESC_MAX)
683 sc->jme_cdata.jme_tx_desc_cnt = JME_NDESC_MAX;
83b03786 684
9389fe19 685 /*
a317449e 686 * Calculate rx rings
9389fe19 687 */
7b040092 688 sc->jme_cdata.jme_rx_ring_cnt = device_getenv_int(dev, "rx_ring_count",
1cc217a9 689 jme_rx_ring_count);
7b040092
SZ
690 sc->jme_cdata.jme_rx_ring_cnt =
691 if_ring_count2(sc->jme_cdata.jme_rx_ring_cnt, JME_NRXRING_MAX);
4447c752 692
31f0d5a2
SZ
693 i = 0;
694 sc->jme_serialize_arr[i++] = &sc->jme_serialize;
29890f78
SZ
695
696 KKASSERT(i == JME_TX_SERIALIZE);
31f0d5a2 697 sc->jme_serialize_arr[i++] = &sc->jme_cdata.jme_tx_serialize;
29890f78
SZ
698
699 KKASSERT(i == JME_RX_SERIALIZE);
7b040092 700 for (j = 0; j < sc->jme_cdata.jme_rx_ring_cnt; ++j) {
31f0d5a2
SZ
701 sc->jme_serialize_arr[i++] =
702 &sc->jme_cdata.jme_rx_data[j].jme_rx_serialize;
703 }
704 KKASSERT(i <= JME_NSERIALIZE);
705 sc->jme_serialize_cnt = i;
706
58880b0d 707 sc->jme_cdata.jme_sc = sc;
7b040092 708 for (i = 0; i < sc->jme_cdata.jme_rx_ring_cnt; ++i) {
58880b0d
SZ
709 struct jme_rxdata *rdata = &sc->jme_cdata.jme_rx_data[i];
710
711 rdata->jme_sc = sc;
712 rdata->jme_rx_coal = jme_rx_status[i].jme_coal;
713 rdata->jme_rx_comp = jme_rx_status[i].jme_comp;
714 rdata->jme_rx_empty = jme_rx_status[i].jme_empty;
715 rdata->jme_rx_idx = i;
7b040092 716 rdata->jme_rx_desc_cnt = rx_desc_cnt;
58880b0d
SZ
717 }
718
76fbb0b9 719 sc->jme_dev = dev;
b249905b
SZ
720 sc->jme_lowaddr = BUS_SPACE_MAXADDR;
721
76fbb0b9
SZ
722 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
723
724 callout_init(&sc->jme_tick_ch);
725
726#ifndef BURN_BRIDGES
727 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
728 uint32_t irq, mem;
729
730 irq = pci_read_config(dev, PCIR_INTLINE, 4);
731 mem = pci_read_config(dev, JME_PCIR_BAR, 4);
732
733 device_printf(dev, "chip is in D%d power mode "
734 "-- setting to D0\n", pci_get_powerstate(dev));
735
736 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
737
738 pci_write_config(dev, PCIR_INTLINE, irq, 4);
739 pci_write_config(dev, JME_PCIR_BAR, mem, 4);
740 }
741#endif /* !BURN_BRIDGE */
742
743 /* Enable bus mastering */
744 pci_enable_busmaster(dev);
745
746 /*
747 * Allocate IO memory
748 *
749 * JMC250 supports both memory mapped and I/O register space
750 * access. Because I/O register access should use different
751 * BARs to access registers it's waste of time to use I/O
752 * register spce access. JMC250 uses 16K to map entire memory
753 * space.
754 */
755 sc->jme_mem_rid = JME_PCIR_BAR;
756 sc->jme_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
757 &sc->jme_mem_rid, RF_ACTIVE);
758 if (sc->jme_mem_res == NULL) {
759 device_printf(dev, "can't allocate IO memory\n");
760 return ENXIO;
761 }
762 sc->jme_mem_bt = rman_get_bustag(sc->jme_mem_res);
763 sc->jme_mem_bh = rman_get_bushandle(sc->jme_mem_res);
764
765 /*
766 * Allocate IRQ
767 */
58880b0d
SZ
768 error = jme_intr_alloc(dev);
769 if (error)
76fbb0b9 770 goto fail;
76fbb0b9
SZ
771
772 /*
b249905b 773 * Extract revisions
76fbb0b9
SZ
774 */
775 reg = CSR_READ_4(sc, JME_CHIPMODE);
776 if (((reg & CHIPMODE_FPGA_REV_MASK) >> CHIPMODE_FPGA_REV_SHIFT) !=
777 CHIPMODE_NOT_FPGA) {
ec7e787b 778 sc->jme_caps |= JME_CAP_FPGA;
76fbb0b9 779 if (bootverbose) {
b249905b 780 device_printf(dev, "FPGA revision: 0x%04x\n",
76fbb0b9
SZ
781 (reg & CHIPMODE_FPGA_REV_MASK) >>
782 CHIPMODE_FPGA_REV_SHIFT);
783 }
784 }
785
b249905b
SZ
786 /* NOTE: FM revision is put in the upper 4 bits */
787 rev = ((reg & CHIPMODE_REVFM_MASK) >> CHIPMODE_REVFM_SHIFT) << 4;
788 rev |= (reg & CHIPMODE_REVECO_MASK) >> CHIPMODE_REVECO_SHIFT;
789 if (bootverbose)
790 device_printf(dev, "Revision (FM/ECO): 0x%02x\n", rev);
791
792 did = pci_get_device(dev);
793 switch (did) {
794 case PCI_PRODUCT_JMICRON_JMC250:
795 if (rev == JME_REV1_A2)
796 sc->jme_workaround |= JME_WA_EXTFIFO | JME_WA_HDX;
797 break;
798
799 case PCI_PRODUCT_JMICRON_JMC260:
800 if (rev == JME_REV2)
801 sc->jme_lowaddr = BUS_SPACE_MAXADDR_32BIT;
802 break;
803
804 default:
ed20d0e3 805 panic("unknown device id 0x%04x", did);
b249905b
SZ
806 }
807 if (rev >= JME_REV2) {
808 sc->jme_clksrc = GHC_TXOFL_CLKSRC | GHC_TXMAC_CLKSRC;
809 sc->jme_clksrc_1000 = GHC_TXOFL_CLKSRC_1000 |
810 GHC_TXMAC_CLKSRC_1000;
811 }
812
76fbb0b9
SZ
813 /* Reset the ethernet controller. */
814 jme_reset(sc);
815
58880b0d
SZ
816 /* Map MSI/MSI-X vectors */
817 jme_set_msinum(sc);
818
76fbb0b9
SZ
819 /* Get station address. */
820 reg = CSR_READ_4(sc, JME_SMBCSR);
821 if (reg & SMBCSR_EEPROM_PRESENT)
822 error = jme_eeprom_macaddr(sc, eaddr);
823 if (error != 0 || (reg & SMBCSR_EEPROM_PRESENT) == 0) {
824 if (error != 0 && (bootverbose)) {
825 device_printf(dev, "ethernet hardware address "
826 "not found in EEPROM.\n");
827 }
828 jme_reg_macaddr(sc, eaddr);
829 }
830
831 /*
832 * Save PHY address.
833 * Integrated JR0211 has fixed PHY address whereas FPGA version
834 * requires PHY probing to get correct PHY address.
835 */
ec7e787b 836 if ((sc->jme_caps & JME_CAP_FPGA) == 0) {
76fbb0b9
SZ
837 sc->jme_phyaddr = CSR_READ_4(sc, JME_GPREG0) &
838 GPREG0_PHY_ADDR_MASK;
839 if (bootverbose) {
840 device_printf(dev, "PHY is at address %d.\n",
841 sc->jme_phyaddr);
842 }
843 } else {
844 sc->jme_phyaddr = 0;
845 }
846
847 /* Set max allowable DMA size. */
848 pcie_ptr = pci_get_pciecap_ptr(dev);
849 if (pcie_ptr != 0) {
850 uint16_t ctrl;
851
ec7e787b 852 sc->jme_caps |= JME_CAP_PCIE;
76fbb0b9
SZ
853 ctrl = pci_read_config(dev, pcie_ptr + PCIER_DEVCTRL, 2);
854 if (bootverbose) {
855 device_printf(dev, "Read request size : %d bytes.\n",
856 128 << ((ctrl >> 12) & 0x07));
857 device_printf(dev, "TLP payload size : %d bytes.\n",
858 128 << ((ctrl >> 5) & 0x07));
859 }
860 switch (ctrl & PCIEM_DEVCTL_MAX_READRQ_MASK) {
861 case PCIEM_DEVCTL_MAX_READRQ_128:
862 sc->jme_tx_dma_size = TXCSR_DMA_SIZE_128;
863 break;
864 case PCIEM_DEVCTL_MAX_READRQ_256:
865 sc->jme_tx_dma_size = TXCSR_DMA_SIZE_256;
866 break;
867 default:
868 sc->jme_tx_dma_size = TXCSR_DMA_SIZE_512;
869 break;
870 }
871 sc->jme_rx_dma_size = RXCSR_DMA_SIZE_128;
872 } else {
873 sc->jme_tx_dma_size = TXCSR_DMA_SIZE_512;
874 sc->jme_rx_dma_size = RXCSR_DMA_SIZE_128;
875 }
876
877#ifdef notyet
878 if (pci_find_extcap(dev, PCIY_PMG, &pmc) == 0)
ec7e787b 879 sc->jme_caps |= JME_CAP_PMCAP;
76fbb0b9
SZ
880#endif
881
882 /*
883 * Create sysctl tree
884 */
885 jme_sysctl_node(sc);
886
887 /* Allocate DMA stuffs */
888 error = jme_dma_alloc(sc);
889 if (error)
890 goto fail;
891
892 ifp->if_softc = sc;
893 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
894 ifp->if_init = jme_init;
895 ifp->if_ioctl = jme_ioctl;
896 ifp->if_start = jme_start;
9de40864
SZ
897#ifdef DEVICE_POLLING
898 ifp->if_poll = jme_poll;
899#endif
76fbb0b9 900 ifp->if_watchdog = jme_watchdog;
31f0d5a2
SZ
901 ifp->if_serialize = jme_serialize;
902 ifp->if_deserialize = jme_deserialize;
903 ifp->if_tryserialize = jme_tryserialize;
904#ifdef INVARIANTS
905 ifp->if_serialize_assert = jme_serialize_assert;
906#endif
b020bb10
SZ
907 ifq_set_maxlen(&ifp->if_snd,
908 sc->jme_cdata.jme_tx_desc_cnt - JME_TXD_RSVD);
76fbb0b9
SZ
909 ifq_set_ready(&ifp->if_snd);
910
911 /* JMC250 supports Tx/Rx checksum offload and hardware vlan tagging. */
912 ifp->if_capabilities = IFCAP_HWCSUM |
1bedd927 913 IFCAP_TSO |
76fbb0b9
SZ
914 IFCAP_VLAN_MTU |
915 IFCAP_VLAN_HWTAGGING;
7b040092 916 if (sc->jme_cdata.jme_rx_ring_cnt > JME_NRXRING_MIN)
d585233c 917 ifp->if_capabilities |= IFCAP_RSS;
76fbb0b9
SZ
918 ifp->if_capenable = ifp->if_capabilities;
919
3d2aeb15
SZ
920 /*
921 * Disable TXCSUM by default to improve bulk data
922 * transmit performance (+20Mbps improvement).
923 */
924 ifp->if_capenable &= ~IFCAP_TXCSUM;
925
926 if (ifp->if_capenable & IFCAP_TXCSUM)
1bedd927
SZ
927 ifp->if_hwassist |= JME_CSUM_FEATURES;
928 ifp->if_hwassist |= CSUM_TSO;
3d2aeb15 929
76fbb0b9
SZ
930 /* Set up MII bus. */
931 error = mii_phy_probe(dev, &sc->jme_miibus,
932 jme_mediachange, jme_mediastatus);
933 if (error) {
934 device_printf(dev, "no PHY found!\n");
935 goto fail;
936 }
937
938 /*
939 * Save PHYADDR for FPGA mode PHY.
940 */
ec7e787b 941 if (sc->jme_caps & JME_CAP_FPGA) {
76fbb0b9
SZ
942 struct mii_data *mii = device_get_softc(sc->jme_miibus);
943
944 if (mii->mii_instance != 0) {
945 struct mii_softc *miisc;
946
947 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) {
948 if (miisc->mii_phy != 0) {
949 sc->jme_phyaddr = miisc->mii_phy;
950 break;
951 }
952 }
953 if (sc->jme_phyaddr != 0) {
954 device_printf(sc->jme_dev,
955 "FPGA PHY is at %d\n", sc->jme_phyaddr);
956 /* vendor magic. */
dbe37f03
SZ
957 jme_miibus_writereg(dev, sc->jme_phyaddr,
958 JMPHY_CONF, JMPHY_CONF_DEFFIFO);
959
ad22907f 960 /* XXX should we clear JME_WA_EXTFIFO */
76fbb0b9
SZ
961 }
962 }
963 }
964
965 ether_ifattach(ifp, eaddr, NULL);
966
967 /* Tell the upper layer(s) we support long frames. */
968 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
969
58880b0d 970 error = jme_intr_setup(dev);
76fbb0b9 971 if (error) {
76fbb0b9
SZ
972 ether_ifdetach(ifp);
973 goto fail;
974 }
975
76fbb0b9
SZ
976 return 0;
977fail:
978 jme_detach(dev);
979 return (error);
980}
981
982static int
983jme_detach(device_t dev)
984{
985 struct jme_softc *sc = device_get_softc(dev);
986
987 if (device_is_attached(dev)) {
988 struct ifnet *ifp = &sc->arpcom.ac_if;
989
31f0d5a2 990 ifnet_serialize_all(ifp);
76fbb0b9 991 jme_stop(sc);
58880b0d 992 jme_intr_teardown(dev);
31f0d5a2 993 ifnet_deserialize_all(ifp);
76fbb0b9
SZ
994
995 ether_ifdetach(ifp);
996 }
997
998 if (sc->jme_sysctl_tree != NULL)
999 sysctl_ctx_free(&sc->jme_sysctl_ctx);
1000
1001 if (sc->jme_miibus != NULL)
1002 device_delete_child(dev, sc->jme_miibus);
1003 bus_generic_detach(dev);
1004
58880b0d 1005 jme_intr_free(dev);
76fbb0b9
SZ
1006
1007 if (sc->jme_mem_res != NULL) {
1008 bus_release_resource(dev, SYS_RES_MEMORY, sc->jme_mem_rid,
1009 sc->jme_mem_res);
1010 }
1011
0b3414d9 1012 jme_dma_free(sc);
76fbb0b9
SZ
1013
1014 return (0);
1015}
1016
1017static void
1018jme_sysctl_node(struct jme_softc *sc)
1019{
83b03786 1020 int coal_max;
760c056c 1021#ifdef JME_RSS_DEBUG
760c056c
SZ
1022 int r;
1023#endif
83b03786 1024
76fbb0b9
SZ
1025 sysctl_ctx_init(&sc->jme_sysctl_ctx);
1026 sc->jme_sysctl_tree = SYSCTL_ADD_NODE(&sc->jme_sysctl_ctx,
1027 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
1028 device_get_nameunit(sc->jme_dev),
1029 CTLFLAG_RD, 0, "");
1030 if (sc->jme_sysctl_tree == NULL) {
1031 device_printf(sc->jme_dev, "can't add sysctl node\n");
1032 return;
1033 }
1034
1035 SYSCTL_ADD_PROC(&sc->jme_sysctl_ctx,
1036 SYSCTL_CHILDREN(sc->jme_sysctl_tree), OID_AUTO,
2870abc4
SZ
1037 "tx_coal_to", CTLTYPE_INT | CTLFLAG_RW,
1038 sc, 0, jme_sysctl_tx_coal_to, "I", "jme tx coalescing timeout");
76fbb0b9
SZ
1039
1040 SYSCTL_ADD_PROC(&sc->jme_sysctl_ctx,
1041 SYSCTL_CHILDREN(sc->jme_sysctl_tree), OID_AUTO,
2870abc4
SZ
1042 "tx_coal_pkt", CTLTYPE_INT | CTLFLAG_RW,
1043 sc, 0, jme_sysctl_tx_coal_pkt, "I", "jme tx coalescing packet");
76fbb0b9
SZ
1044
1045 SYSCTL_ADD_PROC(&sc->jme_sysctl_ctx,
1046 SYSCTL_CHILDREN(sc->jme_sysctl_tree), OID_AUTO,
2870abc4
SZ
1047 "rx_coal_to", CTLTYPE_INT | CTLFLAG_RW,
1048 sc, 0, jme_sysctl_rx_coal_to, "I", "jme rx coalescing timeout");
76fbb0b9
SZ
1049
1050 SYSCTL_ADD_PROC(&sc->jme_sysctl_ctx,
1051 SYSCTL_CHILDREN(sc->jme_sysctl_tree), OID_AUTO,
2870abc4
SZ
1052 "rx_coal_pkt", CTLTYPE_INT | CTLFLAG_RW,
1053 sc, 0, jme_sysctl_rx_coal_pkt, "I", "jme rx coalescing packet");
76fbb0b9 1054
83b03786
SZ
1055 SYSCTL_ADD_INT(&sc->jme_sysctl_ctx,
1056 SYSCTL_CHILDREN(sc->jme_sysctl_tree), OID_AUTO,
7b040092
SZ
1057 "rx_desc_count", CTLFLAG_RD,
1058 &sc->jme_cdata.jme_rx_data[0].jme_rx_desc_cnt,
83b03786
SZ
1059 0, "RX desc count");
1060 SYSCTL_ADD_INT(&sc->jme_sysctl_ctx,
1061 SYSCTL_CHILDREN(sc->jme_sysctl_tree), OID_AUTO,
b020bb10
SZ
1062 "tx_desc_count", CTLFLAG_RD,
1063 &sc->jme_cdata.jme_tx_desc_cnt,
83b03786 1064 0, "TX desc count");
760c056c
SZ
1065 SYSCTL_ADD_INT(&sc->jme_sysctl_ctx,
1066 SYSCTL_CHILDREN(sc->jme_sysctl_tree), OID_AUTO,
7b040092
SZ
1067 "rx_ring_count", CTLFLAG_RD,
1068 &sc->jme_cdata.jme_rx_ring_cnt,
760c056c 1069 0, "RX ring count");
760c056c
SZ
1070#ifdef JME_RSS_DEBUG
1071 SYSCTL_ADD_INT(&sc->jme_sysctl_ctx,
1072 SYSCTL_CHILDREN(sc->jme_sysctl_tree), OID_AUTO,
24dd1705 1073 "rss_debug", CTLFLAG_RW, &sc->jme_rss_debug,
760c056c 1074 0, "RSS debug level");
7b040092 1075 for (r = 0; r < sc->jme_cdata.jme_rx_ring_cnt; ++r) {
955f266e 1076 char rx_ring_desc[32];
7b040092 1077
955f266e
SZ
1078 ksnprintf(rx_ring_desc, sizeof(rx_ring_desc),
1079 "rx_ring%d_pkt", r);
7b040092
SZ
1080 SYSCTL_ADD_ULONG(&sc->jme_sysctl_ctx,
1081 SYSCTL_CHILDREN(sc->jme_sysctl_tree), OID_AUTO,
955f266e 1082 rx_ring_desc, CTLFLAG_RW,
7b040092 1083 &sc->jme_cdata.jme_rx_data[r].jme_rx_pkt, "RXed packets");
955f266e
SZ
1084
1085 ksnprintf(rx_ring_desc, sizeof(rx_ring_desc),
1086 "rx_ring%d_emp", r);
1087 SYSCTL_ADD_ULONG(&sc->jme_sysctl_ctx,
1088 SYSCTL_CHILDREN(sc->jme_sysctl_tree), OID_AUTO,
1089 rx_ring_desc, CTLFLAG_RW,
1090 &sc->jme_cdata.jme_rx_data[r].jme_rx_emp,
1091 "# of time RX ring empty");
760c056c
SZ
1092 }
1093#endif
83b03786
SZ
1094
1095 /*
1096 * Set default coalesce valves
1097 */
76fbb0b9 1098 sc->jme_tx_coal_to = PCCTX_COAL_TO_DEFAULT;
76fbb0b9 1099 sc->jme_tx_coal_pkt = PCCTX_COAL_PKT_DEFAULT;
76fbb0b9 1100 sc->jme_rx_coal_to = PCCRX_COAL_TO_DEFAULT;
76fbb0b9 1101 sc->jme_rx_coal_pkt = PCCRX_COAL_PKT_DEFAULT;
83b03786
SZ
1102
1103 /*
1104 * Adjust coalesce valves, in case that the number of TX/RX
1105 * descs are set to small values by users.
1106 *
1107 * NOTE: coal_max will not be zero, since number of descs
1108 * must aligned by JME_NDESC_ALIGN (16 currently)
1109 */
7409c356 1110 coal_max = sc->jme_cdata.jme_tx_desc_cnt / 2;
83b03786
SZ
1111 if (coal_max < sc->jme_tx_coal_pkt)
1112 sc->jme_tx_coal_pkt = coal_max;
1113
7409c356 1114 coal_max = sc->jme_cdata.jme_rx_data[0].jme_rx_desc_cnt / 2;
83b03786
SZ
1115 if (coal_max < sc->jme_rx_coal_pkt)
1116 sc->jme_rx_coal_pkt = coal_max;
76fbb0b9
SZ
1117}
1118
76fbb0b9
SZ
1119static int
1120jme_dma_alloc(struct jme_softc *sc)
1121{
1122 struct jme_txdesc *txd;
1128a202 1123 bus_dmamem_t dmem;
ff7f3632 1124 int error, i, asize;
76fbb0b9 1125
83b03786 1126 sc->jme_cdata.jme_txdesc =
b020bb10 1127 kmalloc(sc->jme_cdata.jme_tx_desc_cnt * sizeof(struct jme_txdesc),
83b03786 1128 M_DEVBUF, M_WAITOK | M_ZERO);
7b040092
SZ
1129 for (i = 0; i < sc->jme_cdata.jme_rx_ring_cnt; ++i) {
1130 struct jme_rxdata *rdata = &sc->jme_cdata.jme_rx_data[i];
1131
1132 rdata->jme_rxdesc =
1133 kmalloc(rdata->jme_rx_desc_cnt * sizeof(struct jme_rxdesc),
4447c752
SZ
1134 M_DEVBUF, M_WAITOK | M_ZERO);
1135 }
83b03786 1136
76fbb0b9
SZ
1137 /* Create parent ring tag. */
1138 error = bus_dma_tag_create(NULL,/* parent */
a7547dad
SZ
1139 1, JME_RING_BOUNDARY, /* algnmnt, boundary */
1140 sc->jme_lowaddr, /* lowaddr */
76fbb0b9
SZ
1141 BUS_SPACE_MAXADDR, /* highaddr */
1142 NULL, NULL, /* filter, filterarg */
1143 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
1144 0, /* nsegments */
1145 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1146 0, /* flags */
1147 &sc->jme_cdata.jme_ring_tag);
1148 if (error) {
1149 device_printf(sc->jme_dev,
1150 "could not create parent ring DMA tag.\n");
1151 return error;
1152 }
1153
1154 /*
1155 * Create DMA stuffs for TX ring
1156 */
ff7f3632 1157 asize = roundup2(JME_TX_RING_SIZE(sc), JME_TX_RING_ALIGN);
1128a202
SZ
1158 error = bus_dmamem_coherent(sc->jme_cdata.jme_ring_tag,
1159 JME_TX_RING_ALIGN, 0,
0eb220ec 1160 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
ff7f3632 1161 asize, BUS_DMA_WAITOK | BUS_DMA_ZERO, &dmem);
76fbb0b9 1162 if (error) {
1128a202 1163 device_printf(sc->jme_dev, "could not allocate Tx ring.\n");
76fbb0b9
SZ
1164 return error;
1165 }
1128a202
SZ
1166 sc->jme_cdata.jme_tx_ring_tag = dmem.dmem_tag;
1167 sc->jme_cdata.jme_tx_ring_map = dmem.dmem_map;
1168 sc->jme_cdata.jme_tx_ring = dmem.dmem_addr;
1169 sc->jme_cdata.jme_tx_ring_paddr = dmem.dmem_busaddr;
76fbb0b9
SZ
1170
1171 /*
1128a202 1172 * Create DMA stuffs for RX rings
76fbb0b9 1173 */
7b040092 1174 for (i = 0; i < sc->jme_cdata.jme_rx_ring_cnt; ++i) {
dea2452a 1175 error = jme_rxring_dma_alloc(&sc->jme_cdata.jme_rx_data[i]);
4447c752
SZ
1176 if (error)
1177 return error;
76fbb0b9 1178 }
76fbb0b9 1179
76fbb0b9
SZ
1180 /* Create parent buffer tag. */
1181 error = bus_dma_tag_create(NULL,/* parent */
1182 1, 0, /* algnmnt, boundary */
b249905b 1183 sc->jme_lowaddr, /* lowaddr */
76fbb0b9
SZ
1184 BUS_SPACE_MAXADDR, /* highaddr */
1185 NULL, NULL, /* filter, filterarg */
1186 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
1187 0, /* nsegments */
1188 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1189 0, /* flags */
1190 &sc->jme_cdata.jme_buffer_tag);
1191 if (error) {
1192 device_printf(sc->jme_dev,
1193 "could not create parent buffer DMA tag.\n");
1194 return error;
1195 }
1196
1197 /*
1198 * Create DMA stuffs for shadow status block
1199 */
ff7f3632 1200 asize = roundup2(JME_SSB_SIZE, JME_SSB_ALIGN);
1128a202 1201 error = bus_dmamem_coherent(sc->jme_cdata.jme_buffer_tag,
0eb220ec 1202 JME_SSB_ALIGN, 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
ff7f3632 1203 asize, BUS_DMA_WAITOK | BUS_DMA_ZERO, &dmem);
76fbb0b9
SZ
1204 if (error) {
1205 device_printf(sc->jme_dev,
1128a202 1206 "could not create shadow status block.\n");
76fbb0b9
SZ
1207 return error;
1208 }
1128a202
SZ
1209 sc->jme_cdata.jme_ssb_tag = dmem.dmem_tag;
1210 sc->jme_cdata.jme_ssb_map = dmem.dmem_map;
1211 sc->jme_cdata.jme_ssb_block = dmem.dmem_addr;
1212 sc->jme_cdata.jme_ssb_block_paddr = dmem.dmem_busaddr;
76fbb0b9
SZ
1213
1214 /*
1215 * Create DMA stuffs for TX buffers
1216 */
1217
1218 /* Create tag for Tx buffers. */
1219 error = bus_dma_tag_create(sc->jme_cdata.jme_buffer_tag,/* parent */
1220 1, 0, /* algnmnt, boundary */
0eb220ec 1221 BUS_SPACE_MAXADDR, /* lowaddr */
76fbb0b9
SZ
1222 BUS_SPACE_MAXADDR, /* highaddr */
1223 NULL, NULL, /* filter, filterarg */
1bedd927 1224 JME_TSO_MAXSIZE, /* maxsize */
76fbb0b9 1225 JME_MAXTXSEGS, /* nsegments */
9d424cee
SZ
1226 JME_MAXSEGSIZE, /* maxsegsize */
1227 BUS_DMA_ALLOCNOW | BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE,/* flags */
76fbb0b9
SZ
1228 &sc->jme_cdata.jme_tx_tag);
1229 if (error != 0) {
1230 device_printf(sc->jme_dev, "could not create Tx DMA tag.\n");
1231 return error;
1232 }
1233
1234 /* Create DMA maps for Tx buffers. */
b020bb10 1235 for (i = 0; i < sc->jme_cdata.jme_tx_desc_cnt; i++) {
76fbb0b9 1236 txd = &sc->jme_cdata.jme_txdesc[i];
9d424cee
SZ
1237 error = bus_dmamap_create(sc->jme_cdata.jme_tx_tag,
1238 BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE,
1239 &txd->tx_dmamap);
76fbb0b9
SZ
1240 if (error) {
1241 int j;
1242
1243 device_printf(sc->jme_dev,
1244 "could not create %dth Tx dmamap.\n", i);
1245
1246 for (j = 0; j < i; ++j) {
1247 txd = &sc->jme_cdata.jme_txdesc[j];
1248 bus_dmamap_destroy(sc->jme_cdata.jme_tx_tag,
1249 txd->tx_dmamap);
1250 }
1251 bus_dma_tag_destroy(sc->jme_cdata.jme_tx_tag);
1252 sc->jme_cdata.jme_tx_tag = NULL;
1253 return error;
1254 }
1255 }
1256
1257 /*
1258 * Create DMA stuffs for RX buffers
1259 */
7b040092 1260 for (i = 0; i < sc->jme_cdata.jme_rx_ring_cnt; ++i) {
dea2452a 1261 error = jme_rxbuf_dma_alloc(&sc->jme_cdata.jme_rx_data[i]);
4447c752 1262 if (error)
76fbb0b9 1263 return error;
76fbb0b9
SZ
1264 }
1265 return 0;
1266}
1267
1268static void
0b3414d9 1269jme_dma_free(struct jme_softc *sc)
76fbb0b9
SZ
1270{
1271 struct jme_txdesc *txd;
1272 struct jme_rxdesc *rxd;
4447c752
SZ
1273 struct jme_rxdata *rdata;
1274 int i, r;
76fbb0b9
SZ
1275
1276 /* Tx ring */
1277 if (sc->jme_cdata.jme_tx_ring_tag != NULL) {
1278 bus_dmamap_unload(sc->jme_cdata.jme_tx_ring_tag,
1279 sc->jme_cdata.jme_tx_ring_map);
1280 bus_dmamem_free(sc->jme_cdata.jme_tx_ring_tag,
560616bf 1281 sc->jme_cdata.jme_tx_ring,
76fbb0b9
SZ
1282 sc->jme_cdata.jme_tx_ring_map);
1283 bus_dma_tag_destroy(sc->jme_cdata.jme_tx_ring_tag);
1284 sc->jme_cdata.jme_tx_ring_tag = NULL;
1285 }
1286
1287 /* Rx ring */
7b040092 1288 for (r = 0; r < sc->jme_cdata.jme_rx_ring_cnt; ++r) {
4447c752
SZ
1289 rdata = &sc->jme_cdata.jme_rx_data[r];
1290 if (rdata->jme_rx_ring_tag != NULL) {
1291 bus_dmamap_unload(rdata->jme_rx_ring_tag,
1292 rdata->jme_rx_ring_map);
1293 bus_dmamem_free(rdata->jme_rx_ring_tag,
1294 rdata->jme_rx_ring,
1295 rdata->jme_rx_ring_map);
1296 bus_dma_tag_destroy(rdata->jme_rx_ring_tag);
1297 rdata->jme_rx_ring_tag = NULL;
1298 }
76fbb0b9
SZ
1299 }
1300
1301 /* Tx buffers */
1302 if (sc->jme_cdata.jme_tx_tag != NULL) {
b020bb10 1303 for (i = 0; i < sc->jme_cdata.jme_tx_desc_cnt; i++) {
76fbb0b9
SZ
1304 txd = &sc->jme_cdata.jme_txdesc[i];
1305 bus_dmamap_destroy(sc->jme_cdata.jme_tx_tag,
1306 txd->tx_dmamap);
1307 }
1308 bus_dma_tag_destroy(sc->jme_cdata.jme_tx_tag);
1309 sc->jme_cdata.jme_tx_tag = NULL;
1310 }
1311
1312 /* Rx buffers */
7b040092 1313 for (r = 0; r < sc->jme_cdata.jme_rx_ring_cnt; ++r) {
4447c752
SZ
1314 rdata = &sc->jme_cdata.jme_rx_data[r];
1315 if (rdata->jme_rx_tag != NULL) {
7b040092 1316 for (i = 0; i < rdata->jme_rx_desc_cnt; i++) {
4447c752
SZ
1317 rxd = &rdata->jme_rxdesc[i];
1318 bus_dmamap_destroy(rdata->jme_rx_tag,
1319 rxd->rx_dmamap);
1320 }
1321 bus_dmamap_destroy(rdata->jme_rx_tag,
1322 rdata->jme_rx_sparemap);
1323 bus_dma_tag_destroy(rdata->jme_rx_tag);
1324 rdata->jme_rx_tag = NULL;
76fbb0b9 1325 }
76fbb0b9
SZ
1326 }
1327
1328 /* Shadow status block. */
1329 if (sc->jme_cdata.jme_ssb_tag != NULL) {
1330 bus_dmamap_unload(sc->jme_cdata.jme_ssb_tag,
1331 sc->jme_cdata.jme_ssb_map);
1332 bus_dmamem_free(sc->jme_cdata.jme_ssb_tag,
560616bf 1333 sc->jme_cdata.jme_ssb_block,
76fbb0b9
SZ
1334 sc->jme_cdata.jme_ssb_map);
1335 bus_dma_tag_destroy(sc->jme_cdata.jme_ssb_tag);
1336 sc->jme_cdata.jme_ssb_tag = NULL;
1337 }
1338
1339 if (sc->jme_cdata.jme_buffer_tag != NULL) {
1340 bus_dma_tag_destroy(sc->jme_cdata.jme_buffer_tag);
1341 sc->jme_cdata.jme_buffer_tag = NULL;
1342 }
1343 if (sc->jme_cdata.jme_ring_tag != NULL) {
1344 bus_dma_tag_destroy(sc->jme_cdata.jme_ring_tag);
1345 sc->jme_cdata.jme_ring_tag = NULL;
1346 }
83b03786 1347
0b3414d9
SZ
1348 if (sc->jme_cdata.jme_txdesc != NULL) {
1349 kfree(sc->jme_cdata.jme_txdesc, M_DEVBUF);
1350 sc->jme_cdata.jme_txdesc = NULL;
1351 }
7b040092 1352 for (r = 0; r < sc->jme_cdata.jme_rx_ring_cnt; ++r) {
0b3414d9
SZ
1353 rdata = &sc->jme_cdata.jme_rx_data[r];
1354 if (rdata->jme_rxdesc != NULL) {
1355 kfree(rdata->jme_rxdesc, M_DEVBUF);
1356 rdata->jme_rxdesc = NULL;
83b03786
SZ
1357 }
1358 }
76fbb0b9
SZ
1359}
1360
1361/*
1362 * Make sure the interface is stopped at reboot time.
1363 */
1364static int
1365jme_shutdown(device_t dev)
1366{
1367 return jme_suspend(dev);
1368}
1369
1370#ifdef notyet
1371/*
1372 * Unlike other ethernet controllers, JMC250 requires
1373 * explicit resetting link speed to 10/100Mbps as gigabit
1374 * link will cunsume more power than 375mA.
1375 * Note, we reset the link speed to 10/100Mbps with
1376 * auto-negotiation but we don't know whether that operation
1377 * would succeed or not as we have no control after powering
1378 * off. If the renegotiation fail WOL may not work. Running
1379 * at 1Gbps draws more power than 375mA at 3.3V which is
1380 * specified in PCI specification and that would result in
1381 * complete shutdowning power to ethernet controller.
1382 *
1383 * TODO
1384 * Save current negotiated media speed/duplex/flow-control
1385 * to softc and restore the same link again after resuming.
1386 * PHY handling such as power down/resetting to 100Mbps
1387 * may be better handled in suspend method in phy driver.
1388 */
1389static void
1390jme_setlinkspeed(struct jme_softc *sc)
1391{
1392 struct mii_data *mii;
1393 int aneg, i;
1394
1395 JME_LOCK_ASSERT(sc);
1396
1397 mii = device_get_softc(sc->jme_miibus);
1398 mii_pollstat(mii);
1399 aneg = 0;
1400 if ((mii->mii_media_status & IFM_AVALID) != 0) {
1401 switch IFM_SUBTYPE(mii->mii_media_active) {
1402 case IFM_10_T:
1403 case IFM_100_TX:
1404 return;
1405 case IFM_1000_T:
1406 aneg++;
1407 default:
1408 break;
1409 }
1410 }
1411 jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr, MII_100T2CR, 0);
1412 jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr, MII_ANAR,
1413 ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10 | ANAR_CSMA);
1414 jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr, MII_BMCR,
1415 BMCR_AUTOEN | BMCR_STARTNEG);
1416 DELAY(1000);
1417 if (aneg != 0) {
1418 /* Poll link state until jme(4) get a 10/100 link. */
1419 for (i = 0; i < MII_ANEGTICKS_GIGE; i++) {
1420 mii_pollstat(mii);
1421 if ((mii->mii_media_status & IFM_AVALID) != 0) {
1422 switch (IFM_SUBTYPE(mii->mii_media_active)) {
1423 case IFM_10_T:
1424 case IFM_100_TX:
1425 jme_mac_config(sc);
1426 return;
1427 default:
1428 break;
1429 }
1430 }
1431 JME_UNLOCK(sc);
1432 pause("jmelnk", hz);
1433 JME_LOCK(sc);
1434 }
1435 if (i == MII_ANEGTICKS_GIGE)
1436 device_printf(sc->jme_dev, "establishing link failed, "
1437 "WOL may not work!");
1438 }
1439 /*
1440 * No link, force MAC to have 100Mbps, full-duplex link.
1441 * This is the last resort and may/may not work.
1442 */
1443 mii->mii_media_status = IFM_AVALID | IFM_ACTIVE;
1444 mii->mii_media_active = IFM_ETHER | IFM_100_TX | IFM_FDX;
1445 jme_mac_config(sc);
1446}
1447
1448static void
1449jme_setwol(struct jme_softc *sc)
1450{
1451 struct ifnet *ifp = &sc->arpcom.ac_if;
1452 uint32_t gpr, pmcs;
1453 uint16_t pmstat;
1454 int pmc;
1455
1456 if (pci_find_extcap(sc->jme_dev, PCIY_PMG, &pmc) != 0) {
1457 /* No PME capability, PHY power down. */
1458 jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr,
1459 MII_BMCR, BMCR_PDOWN);
1460 return;
1461 }
1462
1463 gpr = CSR_READ_4(sc, JME_GPREG0) & ~GPREG0_PME_ENB;
1464 pmcs = CSR_READ_4(sc, JME_PMCS);
1465 pmcs &= ~PMCS_WOL_ENB_MASK;
1466 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0) {
1467 pmcs |= PMCS_MAGIC_FRAME | PMCS_MAGIC_FRAME_ENB;
1468 /* Enable PME message. */
1469 gpr |= GPREG0_PME_ENB;
1470 /* For gigabit controllers, reset link speed to 10/100. */
ec7e787b 1471 if ((sc->jme_caps & JME_CAP_FASTETH) == 0)
76fbb0b9
SZ
1472 jme_setlinkspeed(sc);
1473 }
1474
1475 CSR_WRITE_4(sc, JME_PMCS, pmcs);
1476 CSR_WRITE_4(sc, JME_GPREG0, gpr);
1477
1478 /* Request PME. */
1479 pmstat = pci_read_config(sc->jme_dev, pmc + PCIR_POWER_STATUS, 2);
1480 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
1481 if ((ifp->if_capenable & IFCAP_WOL) != 0)
1482 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
1483 pci_write_config(sc->jme_dev, pmc + PCIR_POWER_STATUS, pmstat, 2);
1484 if ((ifp->if_capenable & IFCAP_WOL) == 0) {
1485 /* No WOL, PHY power down. */
1486 jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr,
1487 MII_BMCR, BMCR_PDOWN);
1488 }
1489}
1490#endif
1491
1492static int
1493jme_suspend(device_t dev)
1494{
1495 struct jme_softc *sc = device_get_softc(dev);
1496 struct ifnet *ifp = &sc->arpcom.ac_if;
1497
31f0d5a2 1498 ifnet_serialize_all(ifp);
76fbb0b9
SZ
1499 jme_stop(sc);
1500#ifdef notyet
1501 jme_setwol(sc);
1502#endif
31f0d5a2 1503 ifnet_deserialize_all(ifp);
76fbb0b9
SZ
1504
1505 return (0);
1506}
1507
1508static int
1509jme_resume(device_t dev)
1510{
1511 struct jme_softc *sc = device_get_softc(dev);
1512 struct ifnet *ifp = &sc->arpcom.ac_if;
1513#ifdef notyet
1514 int pmc;
1515#endif
1516
31f0d5a2 1517 ifnet_serialize_all(ifp);
76fbb0b9
SZ
1518
1519#ifdef notyet
1520 if (pci_find_extcap(sc->jme_dev, PCIY_PMG, &pmc) != 0) {
1521 uint16_t pmstat;
1522
1523 pmstat = pci_read_config(sc->jme_dev,
1524 pmc + PCIR_POWER_STATUS, 2);
1525 /* Disable PME clear PME status. */
1526 pmstat &= ~PCIM_PSTAT_PMEENABLE;
1527 pci_write_config(sc->jme_dev,
1528 pmc + PCIR_POWER_STATUS, pmstat, 2);
1529 }
1530#endif
1531
1532 if (ifp->if_flags & IFF_UP)
1533 jme_init(sc);
1534
31f0d5a2 1535 ifnet_deserialize_all(ifp);
76fbb0b9
SZ
1536
1537 return (0);
1538}
1539
1bedd927
SZ
1540static __inline int
1541jme_tso_pullup(struct mbuf **mp)
1542{
1543 int hoff, iphlen, thoff;
1544 struct mbuf *m;
1545
1546 m = *mp;
1547 KASSERT(M_WRITABLE(m), ("TSO mbuf not writable"));
1548
1549 iphlen = m->m_pkthdr.csum_iphlen;
1550 thoff = m->m_pkthdr.csum_thlen;
1551 hoff = m->m_pkthdr.csum_lhlen;
1552
1553 KASSERT(iphlen > 0, ("invalid ip hlen"));
1554 KASSERT(thoff > 0, ("invalid tcp hlen"));
1555 KASSERT(hoff > 0, ("invalid ether hlen"));
1556
1557 if (__predict_false(m->m_len < hoff + iphlen + thoff)) {
1558 m = m_pullup(m, hoff + iphlen + thoff);
1559 if (m == NULL) {
1560 *mp = NULL;
1561 return ENOBUFS;
1562 }
1563 *mp = m;
1564 }
1565 return 0;
1566}
1567
76fbb0b9
SZ
1568static int
1569jme_encap(struct jme_softc *sc, struct mbuf **m_head)
1570{
1571 struct jme_txdesc *txd;
1572 struct jme_desc *desc;
1573 struct mbuf *m;
76fbb0b9 1574 bus_dma_segment_t txsegs[JME_MAXTXSEGS];
b0ba1747 1575 int maxsegs, nsegs;
9b3ee148 1576 int error, i, prod, symbol_desc;
1bedd927 1577 uint32_t cflags, flag64, mss;
76fbb0b9
SZ
1578
1579 M_ASSERTPKTHDR((*m_head));
1580
1bedd927
SZ
1581 if ((*m_head)->m_pkthdr.csum_flags & CSUM_TSO) {
1582 /* XXX Is this necessary? */
1583 error = jme_tso_pullup(m_head);
1584 if (error)
1585 return error;
1586 }
1587
76fbb0b9
SZ
1588 prod = sc->jme_cdata.jme_tx_prod;
1589 txd = &sc->jme_cdata.jme_txdesc[prod];
1590
9b3ee148
SZ
1591 if (sc->jme_lowaddr != BUS_SPACE_MAXADDR_32BIT)
1592 symbol_desc = 1;
1593 else
1594 symbol_desc = 0;
1595
b020bb10 1596 maxsegs = (sc->jme_cdata.jme_tx_desc_cnt - sc->jme_cdata.jme_tx_cnt) -
9b3ee148 1597 (JME_TXD_RSVD + symbol_desc);
76fbb0b9
SZ
1598 if (maxsegs > JME_MAXTXSEGS)
1599 maxsegs = JME_MAXTXSEGS;
1bedd927 1600 KASSERT(maxsegs >= (JME_TXD_SPARE - symbol_desc),
ed20d0e3 1601 ("not enough segments %d", maxsegs));
76fbb0b9 1602
b0ba1747
SZ
1603 error = bus_dmamap_load_mbuf_defrag(sc->jme_cdata.jme_tx_tag,
1604 txd->tx_dmamap, m_head,
1605 txsegs, maxsegs, &nsegs, BUS_DMA_NOWAIT);
1606 if (error)
ecc6de9e 1607 goto fail;
76fbb0b9 1608
4458ee95
SZ
1609 bus_dmamap_sync(sc->jme_cdata.jme_tx_tag, txd->tx_dmamap,
1610 BUS_DMASYNC_PREWRITE);
1611
76fbb0b9
SZ
1612 m = *m_head;
1613 cflags = 0;
1bedd927 1614 mss = 0;
76fbb0b9
SZ
1615
1616 /* Configure checksum offload. */
1bedd927
SZ
1617 if (m->m_pkthdr.csum_flags & CSUM_TSO) {
1618 mss = (uint32_t)m->m_pkthdr.tso_segsz << JME_TD_MSS_SHIFT;
1619 cflags |= JME_TD_TSO;
1620 } else if (m->m_pkthdr.csum_flags & JME_CSUM_FEATURES) {
1621 if (m->m_pkthdr.csum_flags & CSUM_IP)
1622 cflags |= JME_TD_IPCSUM;
1623 if (m->m_pkthdr.csum_flags & CSUM_TCP)
1624 cflags |= JME_TD_TCPCSUM;
1625 if (m->m_pkthdr.csum_flags & CSUM_UDP)
1626 cflags |= JME_TD_UDPCSUM;
1627 }
76fbb0b9
SZ
1628
1629 /* Configure VLAN. */
1630 if (m->m_flags & M_VLANTAG) {
1631 cflags |= (m->m_pkthdr.ether_vlantag & JME_TD_VLAN_MASK);
1632 cflags |= JME_TD_VLAN_TAG;
1633 }
1634
560616bf 1635 desc = &sc->jme_cdata.jme_tx_ring[prod];
76fbb0b9 1636 desc->flags = htole32(cflags);
76fbb0b9 1637 desc->addr_hi = htole32(m->m_pkthdr.len);
7228f061
SZ
1638 if (sc->jme_lowaddr != BUS_SPACE_MAXADDR_32BIT) {
1639 /*
1640 * Use 64bits TX desc chain format.
1641 *
1642 * The first TX desc of the chain, which is setup here,
1643 * is just a symbol TX desc carrying no payload.
1644 */
1645 flag64 = JME_TD_64BIT;
1bedd927 1646 desc->buflen = htole32(mss);
7228f061
SZ
1647 desc->addr_lo = 0;
1648
1649 /* No effective TX desc is consumed */
1650 i = 0;
1651 } else {
1652 /*
1653 * Use 32bits TX desc chain format.
1654 *
1655 * The first TX desc of the chain, which is setup here,
1656 * is an effective TX desc carrying the first segment of
1657 * the mbuf chain.
1658 */
1659 flag64 = 0;
1bedd927 1660 desc->buflen = htole32(mss | txsegs[0].ds_len);
7228f061
SZ
1661 desc->addr_lo = htole32(JME_ADDR_LO(txsegs[0].ds_addr));
1662
1663 /* One effective TX desc is consumed */
1664 i = 1;
1665 }
76fbb0b9 1666 sc->jme_cdata.jme_tx_cnt++;
9de40864 1667 KKASSERT(sc->jme_cdata.jme_tx_cnt - i <
022f915e 1668 sc->jme_cdata.jme_tx_desc_cnt - JME_TXD_RSVD);
b020bb10 1669 JME_DESC_INC(prod, sc->jme_cdata.jme_tx_desc_cnt);
7228f061
SZ
1670
1671 txd->tx_ndesc = 1 - i;
b0ba1747 1672 for (; i < nsegs; i++) {
560616bf 1673 desc = &sc->jme_cdata.jme_tx_ring[prod];
76fbb0b9
SZ
1674 desc->buflen = htole32(txsegs[i].ds_len);
1675 desc->addr_hi = htole32(JME_ADDR_HI(txsegs[i].ds_addr));
1676 desc->addr_lo = htole32(JME_ADDR_LO(txsegs[i].ds_addr));
a54bd021 1677 desc->flags = htole32(JME_TD_OWN | flag64);
76fbb0b9
SZ
1678
1679 sc->jme_cdata.jme_tx_cnt++;
1680 KKASSERT(sc->jme_cdata.jme_tx_cnt <=
022f915e 1681 sc->jme_cdata.jme_tx_desc_cnt - JME_TXD_RSVD);
b020bb10 1682 JME_DESC_INC(prod, sc->jme_cdata.jme_tx_desc_cnt);
76fbb0b9
SZ
1683 }
1684
1685 /* Update producer index. */
1686 sc->jme_cdata.jme_tx_prod = prod;
1687 /*
1688 * Finally request interrupt and give the first descriptor
1689 * owenership to hardware.
1690 */
1691 desc = txd->tx_desc;
1692 desc->flags |= htole32(JME_TD_OWN | JME_TD_INTR);
1693
1694 txd->tx_m = m;
b0ba1747 1695 txd->tx_ndesc += nsegs;
76fbb0b9 1696
ecc6de9e
SZ
1697 return 0;
1698fail:
1699 m_freem(*m_head);
1700 *m_head = NULL;
1701 return error;
76fbb0b9
SZ
1702}
1703
1704static void
1705jme_start(struct ifnet *ifp)
1706{
1707 struct jme_softc *sc = ifp->if_softc;
1708 struct mbuf *m_head;
1709 int enq = 0;
1710
31f0d5a2 1711 ASSERT_SERIALIZED(&sc->jme_cdata.jme_tx_serialize);
76fbb0b9 1712
cccc3955 1713 if (!sc->jme_has_link) {
76fbb0b9
SZ
1714 ifq_purge(&ifp->if_snd);
1715 return;
1716 }
1717
1718 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
1719 return;
1720
83b03786 1721 if (sc->jme_cdata.jme_tx_cnt >= JME_TX_DESC_HIWAT(sc))
76fbb0b9
SZ
1722 jme_txeof(sc);
1723
1724 while (!ifq_is_empty(&ifp->if_snd)) {
1725 /*
1726 * Check number of available TX descs, always
1727 * leave JME_TXD_RSVD free TX descs.
1728 */
1bedd927 1729 if (sc->jme_cdata.jme_tx_cnt + JME_TXD_SPARE >
b020bb10 1730 sc->jme_cdata.jme_tx_desc_cnt - JME_TXD_RSVD) {
76fbb0b9
SZ
1731 ifp->if_flags |= IFF_OACTIVE;
1732 break;
1733 }
1734
1735 m_head = ifq_dequeue(&ifp->if_snd, NULL);
1736 if (m_head == NULL)
1737 break;
1738
1739 /*
1740 * Pack the data into the transmit ring. If we
1741 * don't have room, set the OACTIVE flag and wait
1742 * for the NIC to drain the ring.
1743 */
1744 if (jme_encap(sc, &m_head)) {
ecc6de9e
SZ
1745 KKASSERT(m_head == NULL);
1746 ifp->if_oerrors++;
76fbb0b9
SZ
1747 ifp->if_flags |= IFF_OACTIVE;
1748 break;
1749 }
1750 enq++;
1751
1752 /*
1753 * If there's a BPF listener, bounce a copy of this frame
1754 * to him.
1755 */
1756 ETHER_BPF_MTAP(ifp, m_head);
1757 }
1758
1759 if (enq > 0) {
1760 /*
1761 * Reading TXCSR takes very long time under heavy load
1762 * so cache TXCSR value and writes the ORed value with
1763 * the kick command to the TXCSR. This saves one register
1764 * access cycle.
1765 */
1766 CSR_WRITE_4(sc, JME_TXCSR, sc->jme_txcsr | TXCSR_TX_ENB |
1767 TXCSR_TXQ_N_START(TXCSR_TXQ0));
1768 /* Set a timeout in case the chip goes out to lunch. */
1769 ifp->if_timer = JME_TX_TIMEOUT;
1770 }
1771}
1772
1773static void
1774jme_watchdog(struct ifnet *ifp)
1775{
1776 struct jme_softc *sc = ifp->if_softc;
1777
31f0d5a2 1778 ASSERT_IFNET_SERIALIZED_ALL(ifp);
76fbb0b9 1779
cccc3955 1780 if (!sc->jme_has_link) {
76fbb0b9
SZ
1781 if_printf(ifp, "watchdog timeout (missed link)\n");
1782 ifp->if_oerrors++;
1783 jme_init(sc);
1784 return;
1785 }
1786
1787 jme_txeof(sc);
1788 if (sc->jme_cdata.jme_tx_cnt == 0) {
1789 if_printf(ifp, "watchdog timeout (missed Tx interrupts) "
1790 "-- recovering\n");
1791 if (!ifq_is_empty(&ifp->if_snd))
1792 if_devstart(ifp);
1793 return;
1794 }
1795
1796 if_printf(ifp, "watchdog timeout\n");
1797 ifp->if_oerrors++;
1798 jme_init(sc);
1799 if (!ifq_is_empty(&ifp->if_snd))
1800 if_devstart(ifp);
1801}
1802
1803static int
1804jme_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
1805{
1806 struct jme_softc *sc = ifp->if_softc;
1807 struct mii_data *mii = device_get_softc(sc->jme_miibus);
1808 struct ifreq *ifr = (struct ifreq *)data;
1809 int error = 0, mask;
1810
31f0d5a2 1811 ASSERT_IFNET_SERIALIZED_ALL(ifp);
76fbb0b9
SZ
1812
1813 switch (cmd) {
1814 case SIOCSIFMTU:
1815 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > JME_JUMBO_MTU ||
3a5f3f36 1816 (!(sc->jme_caps & JME_CAP_JUMBO) &&
76fbb0b9
SZ
1817 ifr->ifr_mtu > JME_MAX_MTU)) {
1818 error = EINVAL;
1819 break;
1820 }
1821
1822 if (ifp->if_mtu != ifr->ifr_mtu) {
1823 /*
1824 * No special configuration is required when interface
1825 * MTU is changed but availability of Tx checksum
1826 * offload should be chcked against new MTU size as
1827 * FIFO size is just 2K.
1828 */
1829 if (ifr->ifr_mtu >= JME_TX_FIFO_SIZE) {
1bedd927
SZ
1830 ifp->if_capenable &=
1831 ~(IFCAP_TXCSUM | IFCAP_TSO);
1832 ifp->if_hwassist &=
1833 ~(JME_CSUM_FEATURES | CSUM_TSO);
76fbb0b9
SZ
1834 }
1835 ifp->if_mtu = ifr->ifr_mtu;
1836 if (ifp->if_flags & IFF_RUNNING)
1837 jme_init(sc);
1838 }
1839 break;
1840
1841 case SIOCSIFFLAGS:
1842 if (ifp->if_flags & IFF_UP) {
1843 if (ifp->if_flags & IFF_RUNNING) {
1844 if ((ifp->if_flags ^ sc->jme_if_flags) &
1845 (IFF_PROMISC | IFF_ALLMULTI))
1846 jme_set_filter(sc);
1847 } else {
1848 jme_init(sc);
1849 }
1850 } else {
1851 if (ifp->if_flags & IFF_RUNNING)
1852 jme_stop(sc);
1853 }
1854 sc->jme_if_flags = ifp->if_flags;
1855 break;
1856
1857 case SIOCADDMULTI:
1858 case SIOCDELMULTI:
1859 if (ifp->if_flags & IFF_RUNNING)
1860 jme_set_filter(sc);
1861 break;
1862
1863 case SIOCSIFMEDIA:
1864 case SIOCGIFMEDIA:
1865 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
1866 break;
1867
1868 case SIOCSIFCAP:
1869 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
1870
1871 if ((mask & IFCAP_TXCSUM) && ifp->if_mtu < JME_TX_FIFO_SIZE) {
e4616e94 1872 ifp->if_capenable ^= IFCAP_TXCSUM;
1bedd927 1873 if (ifp->if_capenable & IFCAP_TXCSUM)
e4616e94
SZ
1874 ifp->if_hwassist |= JME_CSUM_FEATURES;
1875 else
1876 ifp->if_hwassist &= ~JME_CSUM_FEATURES;
76fbb0b9 1877 }
e4616e94 1878 if (mask & IFCAP_RXCSUM) {
76fbb0b9
SZ
1879 uint32_t reg;
1880
1881 ifp->if_capenable ^= IFCAP_RXCSUM;
1882 reg = CSR_READ_4(sc, JME_RXMAC);
1883 reg &= ~RXMAC_CSUM_ENB;
1884 if (ifp->if_capenable & IFCAP_RXCSUM)
1885 reg |= RXMAC_CSUM_ENB;
1886 CSR_WRITE_4(sc, JME_RXMAC, reg);
1887 }
1888
e4616e94 1889 if (mask & IFCAP_VLAN_HWTAGGING) {
76fbb0b9
SZ
1890 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
1891 jme_set_vlan(sc);
1892 }
e4616e94 1893
1bedd927
SZ
1894 if ((mask & IFCAP_TSO) && ifp->if_mtu < JME_TX_FIFO_SIZE) {
1895 ifp->if_capenable ^= IFCAP_TSO;
1896 if (ifp->if_capenable & IFCAP_TSO)
1897 ifp->if_hwassist |= CSUM_TSO;
1898 else
1899 ifp->if_hwassist &= ~CSUM_TSO;
1900 }
1901
9f20b7b3 1902 if (mask & IFCAP_RSS)
d585233c 1903 ifp->if_capenable ^= IFCAP_RSS;
76fbb0b9
SZ
1904 break;
1905
1906 default:
1907 error = ether_ioctl(ifp, cmd, data);
1908 break;
1909 }
1910 return (error);
1911}
1912
1913static void
1914jme_mac_config(struct jme_softc *sc)
1915{
1916 struct mii_data *mii;
3b3da110
SZ
1917 uint32_t ghc, rxmac, txmac, txpause, gp1;
1918 int phyconf = JMPHY_CONF_DEFFIFO, hdx = 0;
76fbb0b9
SZ
1919
1920 mii = device_get_softc(sc->jme_miibus);
1921
1922 CSR_WRITE_4(sc, JME_GHC, GHC_RESET);
1923 DELAY(10);
1924 CSR_WRITE_4(sc, JME_GHC, 0);
1925 ghc = 0;
1926 rxmac = CSR_READ_4(sc, JME_RXMAC);
1927 rxmac &= ~RXMAC_FC_ENB;
1928 txmac = CSR_READ_4(sc, JME_TXMAC);
1929 txmac &= ~(TXMAC_CARRIER_EXT | TXMAC_FRAME_BURST);
1930 txpause = CSR_READ_4(sc, JME_TXPFC);
1931 txpause &= ~TXPFC_PAUSE_ENB;
1932 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
1933 ghc |= GHC_FULL_DUPLEX;
1934 rxmac &= ~RXMAC_COLL_DET_ENB;
1935 txmac &= ~(TXMAC_COLL_ENB | TXMAC_CARRIER_SENSE |
1936 TXMAC_BACKOFF | TXMAC_CARRIER_EXT |
1937 TXMAC_FRAME_BURST);
1938#ifdef notyet
1939 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0)
1940 txpause |= TXPFC_PAUSE_ENB;
1941 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0)
1942 rxmac |= RXMAC_FC_ENB;
1943#endif
1944 /* Disable retry transmit timer/retry limit. */
1945 CSR_WRITE_4(sc, JME_TXTRHD, CSR_READ_4(sc, JME_TXTRHD) &
1946 ~(TXTRHD_RT_PERIOD_ENB | TXTRHD_RT_LIMIT_ENB));
1947 } else {
1948 rxmac |= RXMAC_COLL_DET_ENB;
1949 txmac |= TXMAC_COLL_ENB | TXMAC_CARRIER_SENSE | TXMAC_BACKOFF;
1950 /* Enable retry transmit timer/retry limit. */
1951 CSR_WRITE_4(sc, JME_TXTRHD, CSR_READ_4(sc, JME_TXTRHD) |
1952 TXTRHD_RT_PERIOD_ENB | TXTRHD_RT_LIMIT_ENB);
1953 }
1954
3b3da110
SZ
1955 /*
1956 * Reprogram Tx/Rx MACs with resolved speed/duplex.
1957 */
1958 gp1 = CSR_READ_4(sc, JME_GPREG1);
1959 gp1 &= ~GPREG1_WA_HDX;
1960
1961 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) == 0)
1962 hdx = 1;
1963
76fbb0b9
SZ
1964 switch (IFM_SUBTYPE(mii->mii_media_active)) {
1965 case IFM_10_T:
b249905b 1966 ghc |= GHC_SPEED_10 | sc->jme_clksrc;
3b3da110
SZ
1967 if (hdx)
1968 gp1 |= GPREG1_WA_HDX;
76fbb0b9 1969 break;
dbe37f03 1970
76fbb0b9 1971 case IFM_100_TX:
b249905b 1972 ghc |= GHC_SPEED_100 | sc->jme_clksrc;
3b3da110
SZ
1973 if (hdx)
1974 gp1 |= GPREG1_WA_HDX;
dbe37f03
SZ
1975
1976 /*
1977 * Use extended FIFO depth to workaround CRC errors
1978 * emitted by chips before JMC250B
1979 */
1980 phyconf = JMPHY_CONF_EXTFIFO;
76fbb0b9 1981 break;
dbe37f03 1982
76fbb0b9 1983 case IFM_1000_T:
ec7e787b 1984 if (sc->jme_caps & JME_CAP_FASTETH)
76fbb0b9 1985 break;
dbe37f03 1986
b249905b 1987 ghc |= GHC_SPEED_1000 | sc->jme_clksrc_1000;
3b3da110 1988 if (hdx)
76fbb0b9
SZ
1989 txmac |= TXMAC_CARRIER_EXT | TXMAC_FRAME_BURST;
1990 break;
dbe37f03 1991
76fbb0b9
SZ
1992 default:
1993 break;
1994 }
1995 CSR_WRITE_4(sc, JME_GHC, ghc);
1996 CSR_WRITE_4(sc, JME_RXMAC, rxmac);
1997 CSR_WRITE_4(sc, JME_TXMAC, txmac);
1998 CSR_WRITE_4(sc, JME_TXPFC, txpause);
dbe37f03 1999
ad22907f 2000 if (sc->jme_workaround & JME_WA_EXTFIFO) {
dbe37f03
SZ
2001 jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr,
2002 JMPHY_CONF, phyconf);
2003 }
3b3da110
SZ
2004 if (sc->jme_workaround & JME_WA_HDX)
2005 CSR_WRITE_4(sc, JME_GPREG1, gp1);
76fbb0b9
SZ
2006}
2007
2008static void
2009jme_intr(void *xsc)
2010{
2011 struct jme_softc *sc = xsc;
2012 struct ifnet *ifp = &sc->arpcom.ac_if;
2013 uint32_t status;
4447c752 2014 int r;
76fbb0b9 2015
31f0d5a2 2016 ASSERT_SERIALIZED(&sc->jme_serialize);
76fbb0b9
SZ
2017
2018 status = CSR_READ_4(sc, JME_INTR_REQ_STATUS);
2019 if (status == 0 || status == 0xFFFFFFFF)
2020 return;
2021
2022 /* Disable interrupts. */
2023 CSR_WRITE_4(sc, JME_INTR_MASK_CLR, JME_INTRS);
2024
2025 status = CSR_READ_4(sc, JME_INTR_STATUS);
2026 if ((status & JME_INTRS) == 0 || status == 0xFFFFFFFF)
2027 goto back;
2028
2029 /* Reset PCC counter/timer and Ack interrupts. */
2030 status &= ~(INTR_TXQ_COMP | INTR_RXQ_COMP);
4447c752 2031
76fbb0b9
SZ
2032 if (status & (INTR_TXQ_COAL | INTR_TXQ_COAL_TO))
2033 status |= INTR_TXQ_COAL | INTR_TXQ_COAL_TO | INTR_TXQ_COMP;
4447c752 2034
7b040092 2035 for (r = 0; r < sc->jme_cdata.jme_rx_ring_cnt; ++r) {
4447c752
SZ
2036 if (status & jme_rx_status[r].jme_coal) {
2037 status |= jme_rx_status[r].jme_coal |
2038 jme_rx_status[r].jme_comp;
2039 }
2040 }
2041
76fbb0b9
SZ
2042 CSR_WRITE_4(sc, JME_INTR_STATUS, status);
2043
2044 if (ifp->if_flags & IFF_RUNNING) {
2045 if (status & (INTR_RXQ_COAL | INTR_RXQ_COAL_TO))
4447c752 2046 jme_rx_intr(sc, status);
76fbb0b9
SZ
2047
2048 if (status & INTR_RXQ_DESC_EMPTY) {
2049 /*
2050 * Notify hardware availability of new Rx buffers.
2051 * Reading RXCSR takes very long time under heavy
2052 * load so cache RXCSR value and writes the ORed
2053 * value with the kick command to the RXCSR. This
2054 * saves one register access cycle.
2055 */
2056 CSR_WRITE_4(sc, JME_RXCSR, sc->jme_rxcsr |
2057 RXCSR_RX_ENB | RXCSR_RXQ_START);
2058 }
2059
2060 if (status & (INTR_TXQ_COAL | INTR_TXQ_COAL_TO)) {
31f0d5a2 2061 lwkt_serialize_enter(&sc->jme_cdata.jme_tx_serialize);
76fbb0b9
SZ
2062 jme_txeof(sc);
2063 if (!ifq_is_empty(&ifp->if_snd))
2064 if_devstart(ifp);
31f0d5a2 2065 lwkt_serialize_exit(&sc->jme_cdata.jme_tx_serialize);
76fbb0b9
SZ
2066 }
2067 }
2068back:
2069 /* Reenable interrupts. */
2070 CSR_WRITE_4(sc, JME_INTR_MASK_SET, JME_INTRS);
2071}
2072
2073static void
2074jme_txeof(struct jme_softc *sc)
2075{
2076 struct ifnet *ifp = &sc->arpcom.ac_if;
6960d7d2 2077 int cons;
76fbb0b9
SZ
2078
2079 cons = sc->jme_cdata.jme_tx_cons;
2080 if (cons == sc->jme_cdata.jme_tx_prod)
2081 return;
2082
76fbb0b9
SZ
2083 /*
2084 * Go through our Tx list and free mbufs for those
2085 * frames which have been transmitted.
2086 */
2087 while (cons != sc->jme_cdata.jme_tx_prod) {
6960d7d2
SZ
2088 struct jme_txdesc *txd, *next_txd;
2089 uint32_t status, next_status;
2090 int next_cons, nsegs;
2091
76fbb0b9
SZ
2092 txd = &sc->jme_cdata.jme_txdesc[cons];
2093 KASSERT(txd->tx_m != NULL,
ed20d0e3 2094 ("%s: freeing NULL mbuf!", __func__));
76fbb0b9
SZ
2095
2096 status = le32toh(txd->tx_desc->flags);
2097 if ((status & JME_TD_OWN) == JME_TD_OWN)
2098 break;
2099
6960d7d2
SZ
2100 /*
2101 * NOTE:
2102 * This chip will always update the TX descriptor's
2103 * buflen field and this updating always happens
2104 * after clearing the OWN bit, so even if the OWN
2105 * bit is cleared by the chip, we still don't sure
2106 * about whether the buflen field has been updated
2107 * by the chip or not. To avoid this race, we wait
2108 * for the next TX descriptor's OWN bit to be cleared
2109 * by the chip before reusing this TX descriptor.
2110 */
2111 next_cons = cons;
2112 JME_DESC_ADD(next_cons, txd->tx_ndesc,
2113 sc->jme_cdata.jme_tx_desc_cnt);
2114 next_txd = &sc->jme_cdata.jme_txdesc[next_cons];
2115 if (next_txd->tx_m == NULL)
2116 break;
2117 next_status = le32toh(next_txd->tx_desc->flags);
2118 if ((next_status & JME_TD_OWN) == JME_TD_OWN)
2119 break;
2120
76fbb0b9
SZ
2121 if (status & (JME_TD_TMOUT | JME_TD_RETRY_EXP)) {
2122 ifp->if_oerrors++;
2123 } else {
2124 ifp->if_opackets++;
2125 if (status & JME_TD_COLLISION) {
2126 ifp->if_collisions +=
2127 le32toh(txd->tx_desc->buflen) &
2128 JME_TD_BUF_LEN_MASK;
2129 }
2130 }
2131
2132 /*
2133 * Only the first descriptor of multi-descriptor
2134 * transmission is updated so driver have to skip entire
2135 * chained buffers for the transmiited frame. In other
2136 * words, JME_TD_OWN bit is valid only at the first
2137 * descriptor of a multi-descriptor transmission.
2138 */
2139 for (nsegs = 0; nsegs < txd->tx_ndesc; nsegs++) {
560616bf 2140 sc->jme_cdata.jme_tx_ring[cons].flags = 0;
b020bb10 2141 JME_DESC_INC(cons, sc->jme_cdata.jme_tx_desc_cnt);
76fbb0b9
SZ
2142 }
2143
2144 /* Reclaim transferred mbufs. */
2145 bus_dmamap_unload(sc->jme_cdata.jme_tx_tag, txd->tx_dmamap);
2146 m_freem(txd->tx_m);
2147 txd->tx_m = NULL;
2148 sc->jme_cdata.jme_tx_cnt -= txd->tx_ndesc;
2149 KASSERT(sc->jme_cdata.jme_tx_cnt >= 0,
ed20d0e3 2150 ("%s: Active Tx desc counter was garbled", __func__));
76fbb0b9
SZ
2151 txd->tx_ndesc = 0;
2152 }
2153 sc->jme_cdata.jme_tx_cons = cons;
2154
1bedd927
SZ
2155 /* 1 for symbol TX descriptor */
2156 if (sc->jme_cdata.jme_tx_cnt <= JME_MAXTXSEGS + 1)
76fbb0b9
SZ
2157 ifp->if_timer = 0;
2158
1bedd927 2159 if (sc->jme_cdata.jme_tx_cnt + JME_TXD_SPARE <=
b020bb10 2160 sc->jme_cdata.jme_tx_desc_cnt - JME_TXD_RSVD)
76fbb0b9 2161 ifp->if_flags &= ~IFF_OACTIVE;
76fbb0b9
SZ
2162}
2163
2164static __inline void
dea2452a 2165jme_discard_rxbufs(struct jme_rxdata *rdata, int cons, int count)
76fbb0b9
SZ
2166{
2167 int i;
2168
2169 for (i = 0; i < count; ++i) {
fd2a6d2c 2170 jme_setup_rxdesc(&rdata->jme_rxdesc[cons]);
7b040092 2171 JME_DESC_INC(cons, rdata->jme_rx_desc_cnt);
76fbb0b9
SZ
2172 }
2173}
2174
a6acc6e2
SZ
2175static __inline struct pktinfo *
2176jme_pktinfo(struct pktinfo *pi, uint32_t flags)
2177{
2178 if (flags & JME_RD_IPV4)
2179 pi->pi_netisr = NETISR_IP;
2180 else if (flags & JME_RD_IPV6)
2181 pi->pi_netisr = NETISR_IPV6;
2182 else
2183 return NULL;
2184
2185 pi->pi_flags = 0;
2186 pi->pi_l3proto = IPPROTO_UNKNOWN;
2187
2188 if (flags & JME_RD_MORE_FRAG)
2189 pi->pi_flags |= PKTINFO_FLAG_FRAG;
2190 else if (flags & JME_RD_TCP)
2191 pi->pi_l3proto = IPPROTO_TCP;
2192 else if (flags & JME_RD_UDP)
2193 pi->pi_l3proto = IPPROTO_UDP;
7345eb80
SZ
2194 else
2195 pi = NULL;
a6acc6e2
SZ
2196 return pi;
2197}
2198
76fbb0b9
SZ
2199/* Receive a frame. */
2200static void
dea2452a 2201jme_rxpkt(struct jme_rxdata *rdata)
76fbb0b9 2202{
dea2452a 2203 struct ifnet *ifp = &rdata->jme_sc->arpcom.ac_if;
76fbb0b9
SZ
2204 struct jme_desc *desc;
2205 struct jme_rxdesc *rxd;
2206 struct mbuf *mp, *m;
a6acc6e2 2207 uint32_t flags, status, hash, hashinfo;
76fbb0b9
SZ
2208 int cons, count, nsegs;
2209
4447c752
SZ
2210 cons = rdata->jme_rx_cons;
2211 desc = &rdata->jme_rx_ring[cons];
9d4f763d 2212
76fbb0b9
SZ
2213 flags = le32toh(desc->flags);
2214 status = le32toh(desc->buflen);
a6acc6e2
SZ
2215 hash = le32toh(desc->addr_hi);
2216 hashinfo = le32toh(desc->addr_lo);
76fbb0b9
SZ
2217 nsegs = JME_RX_NSEGS(status);
2218
9d4f763d
SZ
2219 if (nsegs > 1) {
2220 /* Skip the first descriptor. */
2221 JME_DESC_INC(cons, rdata->jme_rx_desc_cnt);
2222
2223 /*
2224 * Clear the OWN bit of the following RX descriptors;
2225 * hardware will not clear the OWN bit except the first
2226 * RX descriptor.
2227 *
2228 * Since the first RX descriptor is setup, i.e. OWN bit
2229 * on, before its followins RX descriptors, leaving the
2230 * OWN bit on the following RX descriptors will trick
2231 * the hardware into thinking that the following RX
2232 * descriptors are ready to be used too.
2233 */
2234 for (count = 1; count < nsegs; count++,
2235 JME_DESC_INC(cons, rdata->jme_rx_desc_cnt))
2236 rdata->jme_rx_ring[cons].flags = 0;
2237
2238 cons = rdata->jme_rx_cons;
2239 }
2240
7b040092 2241 JME_RSS_DPRINTF(rdata->jme_sc, 15, "ring%d, flags 0x%08x, "
a6acc6e2 2242 "hash 0x%08x, hash info 0x%08x\n",
7b040092 2243 rdata->jme_rx_idx, flags, hash, hashinfo);
760c056c 2244
76fbb0b9
SZ
2245 if (status & JME_RX_ERR_STAT) {
2246 ifp->if_ierrors++;
dea2452a 2247 jme_discard_rxbufs(rdata, cons, nsegs);
76fbb0b9 2248#ifdef JME_SHOW_ERRORS
7b040092 2249 if_printf(ifp, "%s : receive error = 0x%b\n",
76fbb0b9
SZ
2250 __func__, JME_RX_ERR(status), JME_RX_ERR_BITS);
2251#endif
4447c752 2252 rdata->jme_rx_cons += nsegs;
7b040092 2253 rdata->jme_rx_cons %= rdata->jme_rx_desc_cnt;
76fbb0b9
SZ
2254 return;
2255 }
2256
4447c752 2257 rdata->jme_rxlen = JME_RX_BYTES(status) - JME_RX_PAD_BYTES;
76fbb0b9 2258 for (count = 0; count < nsegs; count++,
7b040092 2259 JME_DESC_INC(cons, rdata->jme_rx_desc_cnt)) {
4447c752 2260 rxd = &rdata->jme_rxdesc[cons];
76fbb0b9
SZ
2261 mp = rxd->rx_m;
2262
2263 /* Add a new receive buffer to the ring. */
dea2452a 2264 if (jme_newbuf(rdata, rxd, 0) != 0) {
76fbb0b9
SZ
2265 ifp->if_iqdrops++;
2266 /* Reuse buffer. */
dea2452a 2267 jme_discard_rxbufs(rdata, cons, nsegs - count);
4447c752
SZ
2268 if (rdata->jme_rxhead != NULL) {
2269 m_freem(rdata->jme_rxhead);
dea2452a 2270 JME_RXCHAIN_RESET(rdata);
76fbb0b9
SZ
2271 }
2272 break;
2273 }
2274
2275 /*
2276 * Assume we've received a full sized frame.
2277 * Actual size is fixed when we encounter the end of
2278 * multi-segmented frame.
2279 */
2280 mp->m_len = MCLBYTES;
2281
2282 /* Chain received mbufs. */
4447c752
SZ
2283 if (rdata->jme_rxhead == NULL) {
2284 rdata->jme_rxhead = mp;
2285 rdata->jme_rxtail = mp;
76fbb0b9
SZ
2286 } else {
2287 /*
2288 * Receive processor can receive a maximum frame
2289 * size of 65535 bytes.
2290 */
4447c752
SZ
2291 rdata->jme_rxtail->m_next = mp;
2292 rdata->jme_rxtail = mp;
76fbb0b9
SZ
2293 }
2294
2295 if (count == nsegs - 1) {
a6acc6e2
SZ
2296 struct pktinfo pi0, *pi;
2297
76fbb0b9 2298 /* Last desc. for this frame. */
4447c752 2299 m = rdata->jme_rxhead;
4447c752 2300 m->m_pkthdr.len = rdata->jme_rxlen;
76fbb0b9
SZ
2301 if (nsegs > 1) {
2302 /* Set first mbuf size. */
2303 m->m_len = MCLBYTES - JME_RX_PAD_BYTES;
2304 /* Set last mbuf size. */
4447c752 2305 mp->m_len = rdata->jme_rxlen -
76fbb0b9
SZ
2306 ((MCLBYTES - JME_RX_PAD_BYTES) +
2307 (MCLBYTES * (nsegs - 2)));
2308 } else {
4447c752 2309 m->m_len = rdata->jme_rxlen;
76fbb0b9
SZ
2310 }
2311 m->m_pkthdr.rcvif = ifp;
2312
2313 /*
2314 * Account for 10bytes auto padding which is used
2315 * to align IP header on 32bit boundary. Also note,
2316 * CRC bytes is automatically removed by the
2317 * hardware.
2318 */
2319 m->m_data += JME_RX_PAD_BYTES;
2320
2321 /* Set checksum information. */
2322 if ((ifp->if_capenable & IFCAP_RXCSUM) &&
2323 (flags & JME_RD_IPV4)) {
2324 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
2325 if (flags & JME_RD_IPCSUM)
2326 m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
2327 if ((flags & JME_RD_MORE_FRAG) == 0 &&
2328 ((flags & (JME_RD_TCP | JME_RD_TCPCSUM)) ==
2329 (JME_RD_TCP | JME_RD_TCPCSUM) ||
2330 (flags & (JME_RD_UDP | JME_RD_UDPCSUM)) ==
2331 (JME_RD_UDP | JME_RD_UDPCSUM))) {
2332 m->m_pkthdr.csum_flags |=
2333 CSUM_DATA_VALID | CSUM_PSEUDO_HDR;
2334 m->m_pkthdr.csum_data = 0xffff;
2335 }
2336 }
2337
2338 /* Check for VLAN tagged packets. */
2339 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) &&
2340 (flags & JME_RD_VLAN_TAG)) {
2341 m->m_pkthdr.ether_vlantag =
2342 flags & JME_RD_VLAN_MASK;
2343 m->m_flags |= M_VLANTAG;
2344 }
2345
2346 ifp->if_ipackets++;
a6acc6e2
SZ
2347
2348 if (ifp->if_capenable & IFCAP_RSS)
2349 pi = jme_pktinfo(&pi0, flags);
2350 else
2351 pi = NULL;
2352
2353 if (pi != NULL &&
055b7997
SZ
2354 (hashinfo & JME_RD_HASH_FN_MASK) ==
2355 JME_RD_HASH_FN_TOEPLITZ) {
2356 m->m_flags |= (M_HASH | M_CKHASH);
a6acc6e2
SZ
2357 m->m_pkthdr.hash = toeplitz_hash(hash);
2358 }
2359
2360#ifdef JME_RSS_DEBUG
2361 if (pi != NULL) {
7b040092 2362 JME_RSS_DPRINTF(rdata->jme_sc, 10,
a6acc6e2
SZ
2363 "isr %d flags %08x, l3 %d %s\n",
2364 pi->pi_netisr, pi->pi_flags,
2365 pi->pi_l3proto,
2366 (m->m_flags & M_HASH) ? "hash" : "");
2367 }
2368#endif
2369
76fbb0b9 2370 /* Pass it on. */
eda7db08 2371 ether_input_pkt(ifp, m, pi);
76fbb0b9
SZ
2372
2373 /* Reset mbuf chains. */
dea2452a 2374 JME_RXCHAIN_RESET(rdata);
760c056c 2375#ifdef JME_RSS_DEBUG
7b040092 2376 rdata->jme_rx_pkt++;
760c056c 2377#endif
76fbb0b9
SZ
2378 }
2379 }
2380
4447c752 2381 rdata->jme_rx_cons += nsegs;
7b040092 2382 rdata->jme_rx_cons %= rdata->jme_rx_desc_cnt;
76fbb0b9
SZ
2383}
2384
eda7db08 2385static void
dea2452a 2386jme_rxeof(struct jme_rxdata *rdata, int count)
76fbb0b9
SZ
2387{
2388 struct jme_desc *desc;
eda7db08 2389 int nsegs, pktlen;
76fbb0b9 2390
76fbb0b9 2391 for (;;) {
3fa06afc
SZ
2392#ifdef DEVICE_POLLING
2393 if (count >= 0 && count-- == 0)
2394 break;
2395#endif
4447c752 2396 desc = &rdata->jme_rx_ring[rdata->jme_rx_cons];
76fbb0b9
SZ
2397 if ((le32toh(desc->flags) & JME_RD_OWN) == JME_RD_OWN)
2398 break;
2399 if ((le32toh(desc->buflen) & JME_RD_VALID) == 0)
2400 break;
2401
2402 /*
2403 * Check number of segments against received bytes.
2404 * Non-matching value would indicate that hardware
2405 * is still trying to update Rx descriptors. I'm not
2406 * sure whether this check is needed.
2407 */
2408 nsegs = JME_RX_NSEGS(le32toh(desc->buflen));
2409 pktlen = JME_RX_BYTES(le32toh(desc->buflen));
2410 if (nsegs != howmany(pktlen, MCLBYTES)) {
dea2452a
SZ
2411 if_printf(&rdata->jme_sc->arpcom.ac_if,
2412 "RX fragment count(%d) and "
2413 "packet size(%d) mismach\n", nsegs, pktlen);
76fbb0b9
SZ
2414 break;
2415 }
2416
6afef6ab
SZ
2417 /*
2418 * NOTE:
2419 * RSS hash and hash information may _not_ be set by the
2420 * hardware even if the OWN bit is cleared and VALID bit
2421 * is set.
2422 *
2423 * If the RSS information is not delivered by the hardware
2424 * yet, we MUST NOT accept this packet, let alone reusing
2425 * its RX descriptor. If this packet was accepted and its
2426 * RX descriptor was reused before hardware delivering the
2427 * RSS information, the RX buffer's address would be trashed
2428 * by the RSS information delivered by the hardware.
2429 */
2430 if (JME_ENABLE_HWRSS(rdata->jme_sc)) {
2431 struct jme_rxdesc *rxd;
2432 uint32_t hashinfo;
2433
2434 hashinfo = le32toh(desc->addr_lo);
2435 rxd = &rdata->jme_rxdesc[rdata->jme_rx_cons];
2436
2437 /*
2438 * This test should be enough to detect the pending
2439 * RSS information delivery, given:
2440 * - If RSS hash is not calculated, the hashinfo
064b75ed
SZ
2441 * will be 0. Howvever, the lower 32bits of RX
2442 * buffers' physical address will never be 0.
2443 * (see jme_rxbuf_dma_filter)
6afef6ab
SZ
2444 * - If RSS hash is calculated, the lowest 4 bits
2445 * of hashinfo will be set, while the RX buffers
2446 * are at least 2K aligned.
2447 */
2448 if (hashinfo == JME_ADDR_LO(rxd->rx_paddr)) {
2449#ifdef JME_SHOW_RSSWB
2450 if_printf(&rdata->jme_sc->arpcom.ac_if,
2451 "RSS is not written back yet\n");
2452#endif
2453 break;
2454 }
2455 }
2456
76fbb0b9 2457 /* Received a frame. */
dea2452a 2458 jme_rxpkt(rdata);
76fbb0b9 2459 }
76fbb0b9
SZ
2460}
2461
2462static void
2463jme_tick(void *xsc)
2464{
2465 struct jme_softc *sc = xsc;
76fbb0b9
SZ
2466 struct mii_data *mii = device_get_softc(sc->jme_miibus);
2467
cccc3955 2468 lwkt_serialize_enter(&sc->jme_serialize);
76fbb0b9 2469
cccc3955 2470 sc->jme_in_tick = TRUE;
76fbb0b9 2471 mii_tick(mii);
cccc3955
SZ
2472 sc->jme_in_tick = FALSE;
2473
76fbb0b9
SZ
2474 callout_reset(&sc->jme_tick_ch, hz, jme_tick, sc);
2475
cccc3955 2476 lwkt_serialize_exit(&sc->jme_serialize);
76fbb0b9
SZ
2477}
2478
2479static void
2480jme_reset(struct jme_softc *sc)
2481{
409fe405
SZ
2482 uint32_t val;
2483
2484 /* Make sure that TX and RX are stopped */
76fbb0b9 2485 jme_stop_tx(sc);
409fe405
SZ
2486 jme_stop_rx(sc);
2487
2488 /* Start reset */
76fbb0b9 2489 CSR_WRITE_4(sc, JME_GHC, GHC_RESET);
409fe405
SZ
2490 DELAY(20);
2491
2492 /*
2493 * Hold reset bit before stop reset
2494 */
2495
2496 /* Disable TXMAC and TXOFL clock sources */
2497 CSR_WRITE_4(sc, JME_GHC, GHC_RESET);
2498 /* Disable RXMAC clock source */
2499 val = CSR_READ_4(sc, JME_GPREG1);
2500 CSR_WRITE_4(sc, JME_GPREG1, val | GPREG1_DIS_RXMAC_CLKSRC);
2501 /* Flush */
2502 CSR_READ_4(sc, JME_GHC);
2503
2504 /* Stop reset */
2505 CSR_WRITE_4(sc, JME_GHC, 0);
2506 /* Flush */
2507 CSR_READ_4(sc, JME_GHC);
2508
2509 /*
2510 * Clear reset bit after stop reset
2511 */
2512
2513 /* Enable TXMAC and TXOFL clock sources */
2514 CSR_WRITE_4(sc, JME_GHC, GHC_TXOFL_CLKSRC | GHC_TXMAC_CLKSRC);
2515 /* Enable RXMAC clock source */
2516 val = CSR_READ_4(sc, JME_GPREG1);
2517 CSR_WRITE_4(sc, JME_GPREG1, val & ~GPREG1_DIS_RXMAC_CLKSRC);
2518 /* Flush */
2519 CSR_READ_4(sc, JME_GHC);
2520
2521 /* Disable TXMAC and TXOFL clock sources */
76fbb0b9 2522 CSR_WRITE_4(sc, JME_GHC, 0);
409fe405
SZ
2523 /* Disable RXMAC clock source */
2524 val = CSR_READ_4(sc, JME_GPREG1);
2525 CSR_WRITE_4(sc, JME_GPREG1, val | GPREG1_DIS_RXMAC_CLKSRC);
2526 /* Flush */
2527 CSR_READ_4(sc, JME_GHC);
2528
2529 /* Enable TX and RX */
2530 val = CSR_READ_4(sc, JME_TXCSR);
2531 CSR_WRITE_4(sc, JME_TXCSR, val | TXCSR_TX_ENB);
2532 val = CSR_READ_4(sc, JME_RXCSR);
2533 CSR_WRITE_4(sc, JME_RXCSR, val | RXCSR_RX_ENB);
2534 /* Flush */
2535 CSR_READ_4(sc, JME_TXCSR);
2536 CSR_READ_4(sc, JME_RXCSR);
2537
2538 /* Enable TXMAC and TXOFL clock sources */
2539 CSR_WRITE_4(sc, JME_GHC, GHC_TXOFL_CLKSRC | GHC_TXMAC_CLKSRC);
2540 /* Eisable RXMAC clock source */
2541 val = CSR_READ_4(sc, JME_GPREG1);
2542 CSR_WRITE_4(sc, JME_GPREG1, val & ~GPREG1_DIS_RXMAC_CLKSRC);
2543 /* Flush */
2544 CSR_READ_4(sc, JME_GHC);
2545
2546 /* Stop TX and RX */
2547 jme_stop_tx(sc);
2548 jme_stop_rx(sc);
76fbb0b9
SZ
2549}
2550
2551static void
2552jme_init(void *xsc)
2553{
2554 struct jme_softc *sc = xsc;
2555 struct ifnet *ifp = &sc->arpcom.ac_if;
2556 struct mii_data *mii;
2557 uint8_t eaddr[ETHER_ADDR_LEN];
2558 bus_addr_t paddr;
2559 uint32_t reg;
4447c752 2560 int error, r;
76fbb0b9 2561
31f0d5a2 2562 ASSERT_IFNET_SERIALIZED_ALL(ifp);
76fbb0b9
SZ
2563
2564 /*
2565 * Cancel any pending I/O.
2566 */
2567 jme_stop(sc);
2568
2569 /*
2570 * Reset the chip to a known state.
2571 */
2572 jme_reset(sc);
2573
58880b0d
SZ
2574 /*
2575 * Setup MSI/MSI-X vectors to interrupts mapping
2576 */
2577 jme_set_msinum(sc);
2578
6afef6ab 2579 if (JME_ENABLE_HWRSS(sc))
760c056c
SZ
2580 jme_enable_rss(sc);
2581 else
2582 jme_disable_rss(sc);
4447c752
SZ
2583
2584 /* Init RX descriptors */
7b040092 2585 for (r = 0; r < sc->jme_cdata.jme_rx_ring_cnt; ++r) {
dea2452a 2586 error = jme_init_rx_ring(&sc->jme_cdata.jme_rx_data[r]);
4447c752
SZ
2587 if (error) {
2588 if_printf(ifp, "initialization failed: "
2589 "no memory for %dth RX ring.\n", r);
2590 jme_stop(sc);
2591 return;
2592 }
2593 }
2594
2595 /* Init TX descriptors */
76fbb0b9
SZ
2596 jme_init_tx_ring(sc);
2597
2598 /* Initialize shadow status block. */
2599 jme_init_ssb(sc);
2600
2601 /* Reprogram the station address. */
2602 bcopy(IF_LLADDR(ifp), eaddr, ETHER_ADDR_LEN);
2603 CSR_WRITE_4(sc, JME_PAR0,
2604 eaddr[3] << 24 | eaddr[2] << 16 | eaddr[1] << 8 | eaddr[0]);
2605 CSR_WRITE_4(sc, JME_PAR1, eaddr[5] << 8 | eaddr[4]);
2606
2607 /*
2608 * Configure Tx queue.
2609 * Tx priority queue weight value : 0
2610 * Tx FIFO threshold for processing next packet : 16QW
2611 * Maximum Tx DMA length : 512
2612 * Allow Tx DMA burst.
2613 */
2614 sc->jme_txcsr = TXCSR_TXQ_N_SEL(TXCSR_TXQ0);
2615 sc->jme_txcsr |= TXCSR_TXQ_WEIGHT(TXCSR_TXQ_WEIGHT_MIN);
2616 sc->jme_txcsr |= TXCSR_FIFO_THRESH_16QW;
2617 sc->jme_txcsr |= sc->jme_tx_dma_size;
2618 sc->jme_txcsr |= TXCSR_DMA_BURST;
2619 CSR_WRITE_4(sc, JME_TXCSR, sc->jme_txcsr);
2620
2621 /* Set Tx descriptor counter. */
b020bb10 2622 CSR_WRITE_4(sc, JME_TXQDC, sc->jme_cdata.jme_tx_desc_cnt);
76fbb0b9
SZ
2623
2624 /* Set Tx ring address to the hardware. */
7405bec3 2625 paddr = sc->jme_cdata.jme_tx_ring_paddr;
76fbb0b9
SZ
2626 CSR_WRITE_4(sc, JME_TXDBA_HI, JME_ADDR_HI(paddr));
2627 CSR_WRITE_4(sc, JME_TXDBA_LO, JME_ADDR_LO(paddr));
2628
2629 /* Configure TxMAC parameters. */
2630 reg = TXMAC_IFG1_DEFAULT | TXMAC_IFG2_DEFAULT | TXMAC_IFG_ENB;
2631 reg |= TXMAC_THRESH_1_PKT;
2632 reg |= TXMAC_CRC_ENB | TXMAC_PAD_ENB;
2633 CSR_WRITE_4(sc, JME_TXMAC, reg);
2634
2635 /*
2636 * Configure Rx queue.
2637 * FIFO full threshold for transmitting Tx pause packet : 128T
2638 * FIFO threshold for processing next packet : 128QW
2639 * Rx queue 0 select
2640 * Max Rx DMA length : 128
2641 * Rx descriptor retry : 32
2642 * Rx descriptor retry time gap : 256ns
2643 * Don't receive runt/bad frame.
2644 */
2645 sc->jme_rxcsr = RXCSR_FIFO_FTHRESH_128T;
223cfc2f 2646#if 0
76fbb0b9
SZ
2647 /*
2648 * Since Rx FIFO size is 4K bytes, receiving frames larger
2649 * than 4K bytes will suffer from Rx FIFO overruns. So
2650 * decrease FIFO threshold to reduce the FIFO overruns for
2651 * frames larger than 4000 bytes.
2652 * For best performance of standard MTU sized frames use
2653 * maximum allowable FIFO threshold, 128QW.
2654 */
2655 if ((ifp->if_mtu + ETHER_HDR_LEN + EVL_ENCAPLEN + ETHER_CRC_LEN) >
2656 JME_RX_FIFO_SIZE)
2657 sc->jme_rxcsr |= RXCSR_FIFO_THRESH_16QW;
2658 else
2659 sc->jme_rxcsr |= RXCSR_FIFO_THRESH_128QW;
223cfc2f
SZ
2660#else
2661 /* Improve PCI Express compatibility */
2662 sc->jme_rxcsr |= RXCSR_FIFO_THRESH_16QW;
2663#endif
2664 sc->jme_rxcsr |= sc->jme_rx_dma_size;
76fbb0b9
SZ
2665 sc->jme_rxcsr |= RXCSR_DESC_RT_CNT(RXCSR_DESC_RT_CNT_DEFAULT);
2666 sc->jme_rxcsr |= RXCSR_DESC_RT_GAP_256 & RXCSR_DESC_RT_GAP_MASK;
2667 /* XXX TODO DROP_BAD */
76fbb0b9 2668
7b040092
SZ
2669 for (r = 0; r < sc->jme_cdata.jme_rx_ring_cnt; ++r) {
2670 struct jme_rxdata *rdata = &sc->jme_cdata.jme_rx_data[r];
2671
4447c752
SZ
2672 CSR_WRITE_4(sc, JME_RXCSR, sc->jme_rxcsr | RXCSR_RXQ_N_SEL(r));
2673
2674 /* Set Rx descriptor counter. */
7b040092 2675 CSR_WRITE_4(sc, JME_RXQDC, rdata->jme_rx_desc_cnt);
76fbb0b9 2676
4447c752 2677 /* Set Rx ring address to the hardware. */
7b040092 2678 paddr = rdata->jme_rx_ring_paddr;
4447c752
SZ
2679 CSR_WRITE_4(sc, JME_RXDBA_HI, JME_ADDR_HI(paddr));
2680 CSR_WRITE_4(sc, JME_RXDBA_LO, JME_ADDR_LO(paddr));
2681 }
76fbb0b9
SZ
2682
2683 /* Clear receive filter. */
2684 CSR_WRITE_4(sc, JME_RXMAC, 0);
2685
2686 /* Set up the receive filter. */
2687 jme_set_filter(sc);
2688 jme_set_vlan(sc);
2689
2690 /*
2691 * Disable all WOL bits as WOL can interfere normal Rx
2692 * operation. Also clear WOL detection status bits.
2693 */
2694 reg = CSR_READ_4(sc, JME_PMCS);
2695 reg &= ~PMCS_WOL_ENB_MASK;
2696 CSR_WRITE_4(sc, JME_PMCS, reg);
2697
2698 /*
2699 * Pad 10bytes right before received frame. This will greatly
2700 * help Rx performance on strict-alignment architectures as
2701 * it does not need to copy the frame to align the payload.
2702 */
2703 reg = CSR_READ_4(sc, JME_RXMAC);
2704 reg |= RXMAC_PAD_10BYTES;
2705
2706 if (ifp->if_capenable & IFCAP_RXCSUM)
2707 reg |= RXMAC_CSUM_ENB;
2708 CSR_WRITE_4(sc, JME_RXMAC, reg);
2709
2710 /* Configure general purpose reg0 */
2711 reg = CSR_READ_4(sc, JME_GPREG0);
2712 reg &= ~GPREG0_PCC_UNIT_MASK;
2713 /* Set PCC timer resolution to micro-seconds unit. */
2714 reg |= GPREG0_PCC_UNIT_US;
2715 /*
2716 * Disable all shadow register posting as we have to read
2717 * JME_INTR_STATUS register in jme_intr. Also it seems
2718 * that it's hard to synchronize interrupt status between
2719 * hardware and software with shadow posting due to
2720 * requirements of bus_dmamap_sync(9).
2721 */
2722 reg |= GPREG0_SH_POST_DW7_DIS | GPREG0_SH_POST_DW6_DIS |
2723 GPREG0_SH_POST_DW5_DIS | GPREG0_SH_POST_DW4_DIS |
2724 GPREG0_SH_POST_DW3_DIS | GPREG0_SH_POST_DW2_DIS |
2725 GPREG0_SH_POST_DW1_DIS | GPREG0_SH_POST_DW0_DIS;
2726 /* Disable posting of DW0. */
2727 reg &= ~GPREG0_POST_DW0_ENB;
2728 /* Clear PME message. */
2729 reg &= ~GPREG0_PME_ENB;
2730 /* Set PHY address. */
2731 reg &= ~GPREG0_PHY_ADDR_MASK;
2732 reg |= sc->jme_phyaddr;
2733 CSR_WRITE_4(sc, JME_GPREG0, reg);
2734
2735 /* Configure Tx queue 0 packet completion coalescing. */
2870abc4 2736 jme_set_tx_coal(sc);
76fbb0b9 2737
dea2452a 2738 /* Configure Rx queues packet completion coalescing. */
2870abc4 2739 jme_set_rx_coal(sc);
76fbb0b9
SZ
2740
2741 /* Configure shadow status block but don't enable posting. */
560616bf 2742 paddr = sc->jme_cdata.jme_ssb_block_paddr;
76fbb0b9
SZ
2743 CSR_WRITE_4(sc, JME_SHBASE_ADDR_HI, JME_ADDR_HI(paddr));
2744 CSR_WRITE_4(sc, JME_SHBASE_ADDR_LO, JME_ADDR_LO(paddr));
2745
2746 /* Disable Timer 1 and Timer 2. */
2747 CSR_WRITE_4(sc, JME_TIMER1, 0);
2748 CSR_WRITE_4(sc, JME_TIMER2, 0);
2749
2750 /* Configure retry transmit period, retry limit value. */
2751 CSR_WRITE_4(sc, JME_TXTRHD,
2752 ((TXTRHD_RT_PERIOD_DEFAULT << TXTRHD_RT_PERIOD_SHIFT) &
2753 TXTRHD_RT_PERIOD_MASK) |
2754 ((TXTRHD_RT_LIMIT_DEFAULT << TXTRHD_RT_LIMIT_SHIFT) &
2755 TXTRHD_RT_LIMIT_SHIFT));
2756
9de40864
SZ
2757#ifdef DEVICE_POLLING
2758 if (!(ifp->if_flags & IFF_POLLING))
2759#endif
76fbb0b9
SZ
2760 /* Initialize the interrupt mask. */
2761 CSR_WRITE_4(sc, JME_INTR_MASK_SET, JME_INTRS);
2762 CSR_WRITE_4(sc, JME_INTR_STATUS, 0xFFFFFFFF);
2763
2764 /*
2765 * Enabling Tx/Rx DMA engines and Rx queue processing is
2766 * done after detection of valid link in jme_miibus_statchg.
2767 */
cccc3955 2768 sc->jme_has_link = FALSE;
76fbb0b9
SZ
2769
2770 /* Set the current media. */
2771 mii = device_get_softc(sc->jme_miibus);
2772 mii_mediachg(mii);
2773
2774 callout_reset(&sc->jme_tick_ch, hz, jme_tick, sc);
2775
2776 ifp->if_flags |= IFF_RUNNING;
2777 ifp->if_flags &= ~IFF_OACTIVE;
2778}
2779
2780static void
2781jme_stop(struct jme_softc *sc)
2782{
2783 struct ifnet *ifp = &sc->arpcom.ac_if;
2784 struct jme_txdesc *txd;
2785 struct jme_rxdesc *rxd;
4447c752
SZ
2786 struct jme_rxdata *rdata;
2787 int i, r;
76fbb0b9 2788
31f0d5a2 2789 ASSERT_IFNET_SERIALIZED_ALL(ifp);
76fbb0b9
SZ
2790
2791 /*
2792 * Mark the interface down and cancel the watchdog timer.
2793 */
2794 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
2795 ifp->if_timer = 0;
2796
2797 callout_stop(&sc->jme_tick_ch);
cccc3955 2798 sc->jme_has_link = FALSE;
76fbb0b9
SZ
2799
2800 /*
2801 * Disable interrupts.
2802 */
2803 CSR_WRITE_4(sc, JME_INTR_MASK_CLR, JME_INTRS);
2804 CSR_WRITE_4(sc, JME_INTR_STATUS, 0xFFFFFFFF);
2805
2806 /* Disable updating shadow status block. */
2807 CSR_WRITE_4(sc, JME_SHBASE_ADDR_LO,
2808 CSR_READ_4(sc, JME_SHBASE_ADDR_LO) & ~SHBASE_POST_ENB);
2809
2810 /* Stop receiver, transmitter. */
2811 jme_stop_rx(sc);
2812 jme_stop_tx(sc);
2813
76fbb0b9
SZ
2814 /*
2815 * Free partial finished RX segments
2816 */
7b040092 2817 for (r = 0; r < sc->jme_cdata.jme_rx_ring_cnt; ++r) {
4447c752
SZ
2818 rdata = &sc->jme_cdata.jme_rx_data[r];
2819 if (rdata->jme_rxhead != NULL)
2820 m_freem(rdata->jme_rxhead);
dea2452a 2821 JME_RXCHAIN_RESET(rdata);
4447c752 2822 }
76fbb0b9
SZ
2823
2824 /*
2825 * Free RX and TX mbufs still in the queues.
2826 */
7b040092 2827 for (r = 0; r < sc->jme_cdata.jme_rx_ring_cnt; ++r) {
4447c752 2828 rdata = &sc->jme_cdata.jme_rx_data[r];
7b040092 2829 for (i = 0; i < rdata->jme_rx_desc_cnt; i++) {
4447c752
SZ
2830 rxd = &rdata->jme_rxdesc[i];
2831 if (rxd->rx_m != NULL) {
2832 bus_dmamap_unload(rdata->jme_rx_tag,
2833 rxd->rx_dmamap);
2834 m_freem(rxd->rx_m);
2835 rxd->rx_m = NULL;
2836 }
76fbb0b9 2837 }
4447c752 2838 }
b020bb10 2839 for (i = 0; i < sc->jme_cdata.jme_tx_desc_cnt; i++) {
76fbb0b9
SZ
2840 txd = &sc->jme_cdata.jme_txdesc[i];
2841 if (txd->tx_m != NULL) {
2842 bus_dmamap_unload(sc->jme_cdata.jme_tx_tag,
2843 txd->tx_dmamap);
2844 m_freem(txd->tx_m);
2845 txd->tx_m = NULL;
2846 txd->tx_ndesc = 0;
2847 }
2848 }
2849}
2850
2851static void
2852jme_stop_tx(struct jme_softc *sc)
2853{
2854 uint32_t reg;
2855 int i;
2856
2857 reg = CSR_READ_4(sc, JME_TXCSR);
2858 if ((reg & TXCSR_TX_ENB) == 0)
2859 return;
2860 reg &= ~TXCSR_TX_ENB;
2861 CSR_WRITE_4(sc, JME_TXCSR, reg);
2862 for (i = JME_TIMEOUT; i > 0; i--) {
2863 DELAY(1);
2864 if ((CSR_READ_4(sc, JME_TXCSR) & TXCSR_TX_ENB) == 0)
2865 break;
2866 }
2867 if (i == 0)
2868 device_printf(sc->jme_dev, "stopping transmitter timeout!\n");
2869}
2870
2871static void
2872jme_stop_rx(struct jme_softc *sc)
2873{
2874 uint32_t reg;
2875 int i;
2876
2877 reg = CSR_READ_4(sc, JME_RXCSR);
2878 if ((reg & RXCSR_RX_ENB) == 0)
2879 return;
2880 reg &= ~RXCSR_RX_ENB;
2881 CSR_WRITE_4(sc, JME_RXCSR, reg);
2882 for (i = JME_TIMEOUT; i > 0; i--) {
2883 DELAY(1);
2884 if ((CSR_READ_4(sc, JME_RXCSR) & RXCSR_RX_ENB) == 0)
2885 break;
2886 }
2887 if (i == 0)
2888 device_printf(sc->jme_dev, "stopping recevier timeout!\n");
2889}
2890
2891static void
2892jme_init_tx_ring(struct jme_softc *sc)
2893{
560616bf 2894 struct jme_chain_data *cd;
76fbb0b9
SZ
2895 struct jme_txdesc *txd;
2896 int i;
2897
2898 sc->jme_cdata.jme_tx_prod = 0;
2899 sc->jme_cdata.jme_tx_cons = 0;
2900 sc->jme_cdata.jme_tx_cnt = 0;
2901
560616bf
SZ
2902 cd = &sc->jme_cdata;
2903 bzero(cd->jme_tx_ring, JME_TX_RING_SIZE(sc));
b020bb10 2904 for (i = 0; i < sc->jme_cdata.jme_tx_desc_cnt; i++) {
76fbb0b9
SZ
2905 txd = &sc->jme_cdata.jme_txdesc[i];
2906 txd->tx_m = NULL;
560616bf 2907 txd->tx_desc = &cd->jme_tx_ring[i];
76fbb0b9
SZ
2908 txd->tx_ndesc = 0;
2909 }
76fbb0b9
SZ
2910}
2911
2912static void
2913jme_init_ssb(struct jme_softc *sc)
2914{
560616bf 2915 struct jme_chain_data *cd;
76fbb0b9 2916
560616bf
SZ
2917 cd = &sc->jme_cdata;
2918 bzero(cd->jme_ssb_block, JME_SSB_SIZE);
76fbb0b9
SZ
2919}
2920
2921static int
dea2452a 2922jme_init_rx_ring(struct jme_rxdata *rdata)
76fbb0b9 2923{
76fbb0b9
SZ
2924 struct jme_rxdesc *rxd;
2925 int i;
2926
4447c752
SZ
2927 KKASSERT(rdata->jme_rxhead == NULL &&
2928 rdata->jme_rxtail == NULL &&
2929 rdata->jme_rxlen == 0);
2930 rdata->jme_rx_cons = 0;
76fbb0b9 2931
7b040092
SZ
2932 bzero(rdata->jme_rx_ring, JME_RX_RING_SIZE(rdata));
2933 for (i = 0; i < rdata->jme_rx_desc_cnt; i++) {
76fbb0b9
SZ
2934 int error;
2935
4447c752 2936 rxd = &rdata->jme_rxdesc[i];
76fbb0b9 2937 rxd->rx_m = NULL;
4447c752 2938 rxd->rx_desc = &rdata->jme_rx_ring[i];
dea2452a 2939 error = jme_newbuf(rdata, rxd, 1);
76fbb0b9 2940 if (error)
4447c752 2941 return error;
76fbb0b9 2942 }
4447c752 2943 return 0;
76fbb0b9
SZ
2944}
2945
2946static int
dea2452a 2947jme_newbuf(struct jme_rxdata *rdata, struct jme_rxdesc *rxd, int init)
76fbb0b9 2948{
76fbb0b9 2949 struct mbuf *m;
76fbb0b9
SZ
2950 bus_dma_segment_t segs;
2951 bus_dmamap_t map;
b0ba1747 2952 int error, nsegs;
76fbb0b9
SZ
2953
2954 m = m_getcl(init ? MB_WAIT : MB_DONTWAIT, MT_DATA, M_PKTHDR);
2955 if (m == NULL)
4447c752 2956 return ENOBUFS;
76fbb0b9
SZ
2957 /*
2958 * JMC250 has 64bit boundary alignment limitation so jme(4)
2959 * takes advantage of 10 bytes padding feature of hardware
2960 * in order not to copy entire frame to align IP header on
2961 * 32bit boundary.
2962 */
2963 m->m_len = m->m_pkthdr.len = MCLBYTES;
2964
b0ba1747
SZ
2965 error = bus_dmamap_load_mbuf_segment(rdata->jme_rx_tag,
2966 rdata->jme_rx_sparemap, m, &segs, 1, &nsegs,
2967 BUS_DMA_NOWAIT);
2968 if (error) {
76fbb0b9 2969 m_freem(m);
dea2452a
SZ
2970 if (init) {
2971 if_printf(&rdata->jme_sc->arpcom.ac_if,
2972 "can't load RX mbuf\n");
2973 }
4447c752 2974 return error;
76fbb0b9
SZ
2975 }
2976
2977 if (rxd->rx_m != NULL) {
4447c752 2978 bus_dmamap_sync(rdata->jme_rx_tag, rxd->rx_dmamap,
76fbb0b9 2979 BUS_DMASYNC_POSTREAD);
4447c752 2980 bus_dmamap_unload(rdata->jme_rx_tag, rxd->rx_dmamap);
76fbb0b9
SZ
2981 }
2982 map = rxd->rx_dmamap;
4447c752
SZ
2983 rxd->rx_dmamap = rdata->jme_rx_sparemap;
2984 rdata->jme_rx_sparemap = map;
76fbb0b9 2985 rxd->rx_m = m;
fd2a6d2c 2986 rxd->rx_paddr = segs.ds_addr;
76fbb0b9 2987
fd2a6d2c 2988 jme_setup_rxdesc(rxd);
4447c752 2989 return 0;
76fbb0b9
SZ
2990}
2991
2992static void
2993jme_set_vlan(struct jme_softc *sc)
2994{
2995 struct ifnet *ifp = &sc->arpcom.ac_if;
2996 uint32_t reg;
2997
31f0d5a2 2998 ASSERT_IFNET_SERIALIZED_ALL(ifp);
76fbb0b9
SZ
2999
3000 reg = CSR_READ_4(sc, JME_RXMAC);
3001 reg &= ~RXMAC_VLAN_ENB;
3002 if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING)
3003 reg |= RXMAC_VLAN_ENB;
3004 CSR_WRITE_4(sc, JME_RXMAC, reg);
3005}
3006
3007static void
3008jme_set_filter(struct jme_softc *sc)
3009{
3010 struct ifnet *ifp = &sc->arpcom.ac_if;
3011 struct ifmultiaddr *ifma;
3012 uint32_t crc;
3013 uint32_t mchash[2];
3014 uint32_t rxcfg;
3015
31f0d5a2 3016 ASSERT_IFNET_SERIALIZED_ALL(ifp);
76fbb0b9
SZ
3017
3018 rxcfg = CSR_READ_4(sc, JME_RXMAC);
3019 rxcfg &= ~(RXMAC_BROADCAST | RXMAC_PROMISC | RXMAC_MULTICAST |
3020 RXMAC_ALLMULTI);
3021
3022 /*
3023 * Always accept frames destined to our station address.
3024 * Always accept broadcast frames.
3025 */
3026 rxcfg |= RXMAC_UNICAST | RXMAC_BROADCAST;
3027
3028 if (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) {
3029 if (ifp->if_flags & IFF_PROMISC)
3030 rxcfg |= RXMAC_PROMISC;
3031 if (ifp->if_flags & IFF_ALLMULTI)
3032 rxcfg |= RXMAC_ALLMULTI;
3033 CSR_WRITE_4(sc, JME_MAR0, 0xFFFFFFFF);
3034 CSR_WRITE_4(sc, JME_MAR1, 0xFFFFFFFF);
3035 CSR_WRITE_4(sc, JME_RXMAC, rxcfg);
3036 return;
3037 }
3038
3039 /*
3040 * Set up the multicast address filter by passing all multicast
3041 * addresses through a CRC generator, and then using the low-order
3042 * 6 bits as an index into the 64 bit multicast hash table. The
3043 * high order bits select the register, while the rest of the bits
3044 * select the bit within the register.
3045 */
3046 rxcfg |= RXMAC_MULTICAST;
3047 bzero(mchash, sizeof(mchash));
3048
441d34b2 3049 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
76fbb0b9
SZ
3050 if (ifma->ifma_addr->sa_family != AF_LINK)
3051 continue;
3052 crc = ether_crc32_be(LLADDR((struct sockaddr_dl *)
3053 ifma->ifma_addr), ETHER_ADDR_LEN);
3054
3055 /* Just want the 6 least significant bits. */
3056 crc &= 0x3f;
3057
3058 /* Set the corresponding bit in the hash table. */
3059 mchash[crc >> 5] |= 1 << (crc & 0x1f);
3060 }
3061
3062 CSR_WRITE_4(sc, JME_MAR0, mchash[0]);
3063 CSR_WRITE_4(sc, JME_MAR1, mchash[1]);
3064 CSR_WRITE_4(sc, JME_RXMAC, rxcfg);
3065}
3066
3067static int
2870abc4 3068jme_sysctl_tx_coal_to(SYSCTL_HANDLER_ARGS)
76fbb0b9 3069{
2870abc4
SZ
3070 struct jme_softc *sc = arg1;
3071 struct ifnet *ifp = &sc->arpcom.ac_if;
3072 int error, v;
3073
31f0d5a2 3074 ifnet_serialize_all(ifp);
2870abc4
SZ
3075
3076 v = sc->jme_tx_coal_to;
3077 error = sysctl_handle_int(oidp, &v, 0, req);
3078 if (error || req->newptr == NULL)
3079 goto back;
3080
3081 if (v < PCCTX_COAL_TO_MIN || v > PCCTX_COAL_TO_MAX) {
3082 error = EINVAL;
3083 goto back;
3084 }
3085
3086 if (v != sc->jme_tx_coal_to) {
3087 sc->jme_tx_coal_to = v;
3088 if (ifp->if_flags & IFF_RUNNING)
3089 jme_set_tx_coal(sc);
3090 }
3091back:
31f0d5a2 3092 ifnet_deserialize_all(ifp);
2870abc4 3093 return error;
76fbb0b9
SZ
3094}
3095
3096static int
2870abc4 3097jme_sysctl_tx_coal_pkt(SYSCTL_HANDLER_ARGS)
76fbb0b9 3098{
2870abc4
SZ
3099 struct jme_softc *sc = arg1;
3100 struct ifnet *ifp = &sc->arpcom.ac_if;
3101 int error, v;
3102
31f0d5a2 3103 ifnet_serialize_all(ifp);
2870abc4
SZ
3104
3105 v = sc->jme_tx_coal_pkt;
3106 error = sysctl_handle_int(oidp, &v, 0, req);
3107 if (error || req->newptr == NULL)
3108 goto back;
3109
3110 if (v < PCCTX_COAL_PKT_MIN || v > PCCTX_COAL_PKT_MAX) {
3111 error = EINVAL;
3112 goto back;
3113 }
3114
3115 if (v != sc->jme_tx_coal_pkt) {
3116 sc->jme_tx_coal_pkt = v;
3117 if (ifp->if_flags & IFF_RUNNING)
3118 jme_set_tx_coal(sc);
3119 }
3120back:
31f0d5a2 3121 ifnet_deserialize_all(ifp);
2870abc4 3122 return error;
76fbb0b9
SZ
3123}
3124
3125static int
2870abc4 3126jme_sysctl_rx_coal_to(SYSCTL_HANDLER_ARGS)
76fbb0b9 3127{
2870abc4
SZ
3128 struct jme_softc *sc = arg1;
3129 struct ifnet *ifp = &sc->arpcom.ac_if;
3130 int error, v;
3131
31f0d5a2 3132 ifnet_serialize_all(ifp);
2870abc4
SZ
3133
3134 v = sc->jme_rx_coal_to;
3135 error = sysctl_handle_int(oidp, &v, 0, req);
3136 if (error || req->newptr == NULL)
3137 goto back;
3138
3139 if (v < PCCRX_COAL_TO_MIN || v > PCCRX_COAL_TO_MAX) {
3140 error = EINVAL;
3141 goto back;
3142 }
3143
3144 if (v != sc->jme_rx_coal_to) {
3145 sc->jme_rx_coal_to = v;
3146 if (ifp->if_flags & IFF_RUNNING)
3147 jme_set_rx_coal(sc);
3148 }
3149back:
31f0d5a2 3150 ifnet_deserialize_all(ifp);
2870abc4 3151 return error;
76fbb0b9
SZ
3152}
3153
3154static int
2870abc4
SZ
3155jme_sysctl_rx_coal_pkt(SYSCTL_HANDLER_ARGS)
3156{
3157 struct jme_softc *sc = arg1;
3158 struct ifnet *ifp = &sc->arpcom.ac_if;
3159 int error, v;
3160
31f0d5a2 3161 ifnet_serialize_all(ifp);
2870abc4
SZ
3162
3163 v = sc->jme_rx_coal_pkt;
3164 error = sysctl_handle_int(oidp, &v, 0, req);
3165 if (error || req->newptr == NULL)
3166 goto back;
3167
3168 if (v < PCCRX_COAL_PKT_MIN || v > PCCRX_COAL_PKT_MAX) {
3169 error = EINVAL;
3170 goto back;
3171 }
3172
3173 if (v != sc->jme_rx_coal_pkt) {
3174 sc->jme_rx_coal_pkt = v;
3175 if (ifp->if_flags & IFF_RUNNING)
3176 jme_set_rx_coal(sc);
3177 }
3178back:
31f0d5a2 3179 ifnet_deserialize_all(ifp);
2870abc4
SZ
3180 return error;
3181}
3182
3183static void
3184jme_set_tx_coal(struct jme_softc *sc)
3185{
3186 uint32_t reg;
3187
3188 reg = (sc->jme_tx_coal_to << PCCTX_COAL_TO_SHIFT) &
3189 PCCTX_COAL_TO_MASK;
3190 reg |= (sc->jme_tx_coal_pkt << PCCTX_COAL_PKT_SHIFT) &
3191 PCCTX_COAL_PKT_MASK;
3192 reg |= PCCTX_COAL_TXQ0;
3193 CSR_WRITE_4(sc, JME_PCCTX, reg);
3194}
3195
3196static void
3197jme_set_rx_coal(struct jme_softc *sc)
76fbb0b9 3198{
2870abc4 3199 uint32_t reg;
4447c752 3200 int r;
2870abc4
SZ
3201
3202 reg = (sc->jme_rx_coal_to << PCCRX_COAL_TO_SHIFT) &
3203 PCCRX_COAL_TO_MASK;
3204 reg |= (sc->jme_rx_coal_pkt << PCCRX_COAL_PKT_SHIFT) &
3205 PCCRX_COAL_PKT_MASK;
7b040092 3206 for (r = 0; r < sc->jme_cdata.jme_rx_ring_cnt; ++r)
9f20b7b3 3207 CSR_WRITE_4(sc, JME_PCCRX(r), reg);
76fbb0b9 3208}
9de40864
SZ
3209
3210#ifdef DEVICE_POLLING
3211
3212static void
3213jme_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
3214{
3215 struct jme_softc *sc = ifp->if_softc;
3216 uint32_t status;
eda7db08 3217 int r;
9de40864 3218
31f0d5a2 3219 ASSERT_SERIALIZED(&sc->jme_serialize);
9de40864
SZ
3220
3221 switch (cmd) {
3222 case POLL_REGISTER:
3223 CSR_WRITE_4(sc, JME_INTR_MASK_CLR, JME_INTRS);
3224 break;
3225
3226 case POLL_DEREGISTER:
3227 CSR_WRITE_4(sc, JME_INTR_MASK_SET, JME_INTRS);
3228 break;
3229
3230 case POLL_AND_CHECK_STATUS:
3231 case POLL_ONLY:
3232 status = CSR_READ_4(sc, JME_INTR_STATUS);
0e7f1e6f 3233
7b040092 3234 for (r = 0; r < sc->jme_cdata.jme_rx_ring_cnt; ++r) {
31f0d5a2
SZ
3235 struct jme_rxdata *rdata =
3236 &sc->jme_cdata.jme_rx_data[r];
3237
3238 lwkt_serialize_enter(&rdata->jme_rx_serialize);
dea2452a 3239 jme_rxeof(rdata, count);
31f0d5a2
SZ
3240 lwkt_serialize_exit(&rdata->jme_rx_serialize);
3241 }
9de40864
SZ
3242
3243 if (status & INTR_RXQ_DESC_EMPTY) {
3244 CSR_WRITE_4(sc, JME_INTR_STATUS, status);
3245 CSR_WRITE_4(sc, JME_RXCSR, sc->jme_rxcsr |
3246 RXCSR_RX_ENB | RXCSR_RXQ_START);
3247 }
3248
31f0d5a2 3249 lwkt_serialize_enter(&sc->jme_cdata.jme_tx_serialize);
9de40864
SZ
3250 jme_txeof(sc);
3251 if (!ifq_is_empty(&ifp->if_snd))
3252 if_devstart(ifp);
31f0d5a2 3253 lwkt_serialize_exit(&sc->jme_cdata.jme_tx_serialize);
9de40864
SZ
3254 break;
3255 }
3256}
3257
3258#endif /* DEVICE_POLLING */
4447c752
SZ
3259
3260static int
dea2452a 3261jme_rxring_dma_alloc(struct jme_rxdata *rdata)
4447c752 3262{
1128a202 3263 bus_dmamem_t dmem;
ff7f3632 3264 int error, asize;
4447c752 3265
ff7f3632 3266 asize = roundup2(JME_RX_RING_SIZE(rdata), JME_RX_RING_ALIGN);
dea2452a 3267 error = bus_dmamem_coherent(rdata->jme_sc->jme_cdata.jme_ring_tag,
1128a202 3268 JME_RX_RING_ALIGN, 0,
0eb220ec 3269 BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
ff7f3632 3270 asize, BUS_DMA_WAITOK | BUS_DMA_ZERO, &dmem);
4447c752 3271 if (error) {
dea2452a
SZ
3272 device_printf(rdata->jme_sc->jme_dev,
3273 "could not allocate %dth Rx ring.\n", rdata->jme_rx_idx);
4447c752
SZ
3274 return error;
3275 }
1128a202
SZ
3276 rdata->jme_rx_ring_tag = dmem.dmem_tag;
3277 rdata->jme_rx_ring_map = dmem.dmem_map;
3278 rdata->jme_rx_ring = dmem.dmem_addr;
3279 rdata->jme_rx_ring_paddr = dmem.dmem_busaddr;
4447c752
SZ
3280
3281 return 0;
3282}
3283
3284static int
064b75ed
SZ
3285jme_rxbuf_dma_filter(void *arg __unused, bus_addr_t paddr)
3286{
3287 if ((paddr & 0xffffffff) == 0) {
3288 /*
3289 * Don't allow lower 32bits of the RX buffer's
3290 * physical address to be 0, else it will break
3291 * hardware pending RSS information delivery
3292 * detection on RX path.
3293 */
3294 return 1;
3295 }
3296 return 0;
3297}
3298
3299static int
dea2452a 3300jme_rxbuf_dma_alloc(struct jme_rxdata *rdata)
4447c752 3301{
064b75ed 3302 bus_addr_t lowaddr;
4447c752
SZ
3303 int i, error;
3304
064b75ed
SZ
3305 lowaddr = BUS_SPACE_MAXADDR;
3306 if (JME_ENABLE_HWRSS(rdata->jme_sc)) {
3307 /* jme_rxbuf_dma_filter will be called */
3308 lowaddr = BUS_SPACE_MAXADDR_32BIT;
3309 }
3310
4447c752 3311 /* Create tag for Rx buffers. */
dea2452a
SZ
3312 error = bus_dma_tag_create(
3313 rdata->jme_sc->jme_cdata.jme_buffer_tag,/* parent */
4447c752 3314 JME_RX_BUF_ALIGN, 0, /* algnmnt, boundary */
064b75ed 3315 lowaddr, /* lowaddr */
4447c752 3316 BUS_SPACE_MAXADDR, /* highaddr */
064b75ed 3317 jme_rxbuf_dma_filter, NULL, /* filter, filterarg */
4447c752
SZ
3318 MCLBYTES, /* maxsize */
3319 1, /* nsegments */
3320 MCLBYTES, /* maxsegsize */
9d424cee 3321 BUS_DMA_ALLOCNOW | BUS_DMA_WAITOK | BUS_DMA_ALIGNED,/* flags */
4447c752
SZ
3322 &rdata->jme_rx_tag);
3323 if (error) {
dea2452a
SZ
3324 device_printf(rdata->jme_sc->jme_dev,
3325 "could not create %dth Rx DMA tag.\n", rdata->jme_rx_idx);
4447c752
SZ
3326 return error;
3327 }
3328
3329 /* Create DMA maps for Rx buffers. */
9d424cee 3330 error = bus_dmamap_create(rdata->jme_rx_tag, BUS_DMA_WAITOK,
4447c752
SZ
3331 &rdata->jme_rx_sparemap);
3332 if (error) {
dea2452a
SZ
3333 device_printf(rdata->jme_sc->jme_dev,
3334 "could not create %dth spare Rx dmamap.\n",
3335 rdata->jme_rx_idx);
4447c752
SZ
3336 bus_dma_tag_destroy(rdata->jme_rx_tag);
3337 rdata->jme_rx_tag = NULL;
3338 return error;
3339 }
7b040092 3340 for (i = 0; i < rdata->jme_rx_desc_cnt; i++) {
4447c752
SZ
3341 struct jme_rxdesc *rxd = &rdata->jme_rxdesc[i];
3342
9d424cee 3343 error = bus_dmamap_create(rdata->jme_rx_tag, BUS_DMA_WAITOK,
4447c752
SZ
3344 &rxd->rx_dmamap);
3345 if (error) {
3346 int j;
3347
dea2452a 3348 device_printf(rdata->jme_sc->jme_dev,
4447c752 3349 "could not create %dth Rx dmamap "
dea2452a 3350 "for %dth RX ring.\n", i, rdata->jme_rx_idx);
4447c752
SZ
3351
3352 for (j = 0; j < i; ++j) {
3353 rxd = &rdata->jme_rxdesc[j];
3354 bus_dmamap_destroy(rdata->jme_rx_tag,
3355 rxd->rx_dmamap);
3356 }
3357 bus_dmamap_destroy(rdata->jme_rx_tag,
3358 rdata->jme_rx_sparemap);
3359 bus_dma_tag_destroy(rdata->jme_rx_tag);
3360 rdata->jme_rx_tag = NULL;
3361 return error;
3362 }
3363 }
3364 return 0;
3365}
3366
3367static void
3368jme_rx_intr(struct jme_softc *sc, uint32_t status)
3369{
eda7db08 3370 int r;
4447c752 3371
7b040092 3372 for (r = 0; r < sc->jme_cdata.jme_rx_ring_cnt; ++r) {
31810fb8 3373 struct jme_rxdata *rdata = &sc->jme_cdata.jme_rx_data[r];
31f0d5a2 3374
31810fb8 3375 if (status & rdata->jme_rx_coal) {
31f0d5a2 3376 lwkt_serialize_enter(&rdata->jme_rx_serialize);
dea2452a 3377 jme_rxeof(rdata, -1);
31f0d5a2
SZ
3378 lwkt_serialize_exit(&rdata->jme_rx_serialize);
3379 }
4447c752
SZ
3380 }
3381}
760c056c
SZ
3382
3383static void
3384jme_enable_rss(struct jme_softc *sc)
3385{
24dd1705
SZ
3386 uint32_t rssc, ind;
3387 uint8_t key[RSSKEY_NREGS * RSSKEY_REGSIZE];
760c056c
SZ
3388 int i;
3389
022f915e
SZ
3390 KASSERT(sc->jme_cdata.jme_rx_ring_cnt == JME_NRXRING_2 ||
3391 sc->jme_cdata.jme_rx_ring_cnt == JME_NRXRING_4,
ed20d0e3 3392 ("%s: invalid # of RX rings (%d)",
022f915e 3393 sc->arpcom.ac_if.if_xname, sc->jme_cdata.jme_rx_ring_cnt));
66f75939 3394
760c056c
SZ
3395 rssc = RSSC_HASH_64_ENTRY;
3396 rssc |= RSSC_HASH_IPV4 | RSSC_HASH_IPV4_TCP;
7b040092 3397 rssc |= sc->jme_cdata.jme_rx_ring_cnt >> 1;
760c056c
SZ
3398 JME_RSS_DPRINTF(sc, 1, "rssc 0x%08x\n", rssc);
3399 CSR_WRITE_4(sc, JME_RSSC, rssc);
3400
24dd1705
SZ
3401 toeplitz_get_key(key, sizeof(key));
3402 for (i = 0; i < RSSKEY_NREGS; ++i) {
3403 uint32_t keyreg;
3404
3405 keyreg = RSSKEY_REGVAL(key, i);
3406 JME_RSS_DPRINTF(sc, 5, "keyreg%d 0x%08x\n", i, keyreg);
3407
3408 CSR_WRITE_4(sc, RSSKEY_REG(i), keyreg);
3409 }
760c056c 3410
66f75939
SZ
3411 /*
3412 * Create redirect table in following fashion:
3413 * (hash & ring_cnt_mask) == rdr_table[(hash & rdr_table_mask)]
3414 */
760c056c 3415 ind = 0;
66f75939
SZ
3416 for (i = 0; i < RSSTBL_REGSIZE; ++i) {
3417 int q;
3418
7b040092 3419 q = i % sc->jme_cdata.jme_rx_ring_cnt;
66f75939 3420 ind |= q << (i * 8);
760c056c
SZ
3421 }
3422 JME_RSS_DPRINTF(sc, 1, "ind 0x%08x\n", ind);
66f75939 3423
760c056c
SZ
3424 for (i = 0; i < RSSTBL_NREGS; ++i)
3425 CSR_WRITE_4(sc, RSSTBL_REG(i), ind);
3426}
3427
3428static void
3429jme_disable_rss(struct jme_softc *sc)
3430{
760c056c
SZ
3431 CSR_WRITE_4(sc, JME_RSSC, RSSC_DIS_RSS);
3432}
31f0d5a2
SZ
3433
3434static void
3435jme_serialize(struct ifnet *ifp, enum ifnet_serialize slz)
3436{
3437 struct jme_softc *sc = ifp->if_softc;
3438
29890f78
SZ
3439 ifnet_serialize_array_enter(sc->jme_serialize_arr,
3440 sc->jme_serialize_cnt, JME_TX_SERIALIZE, JME_RX_SERIALIZE, slz);
31f0d5a2
SZ
3441}
3442
3443static void
3444jme_deserialize(struct ifnet *ifp, enum ifnet_serialize slz)
3445{
3446 struct jme_softc *sc = ifp->if_softc;
3447
29890f78
SZ
3448 ifnet_serialize_array_exit(sc->jme_serialize_arr,
3449 sc->jme_serialize_cnt, JME_TX_SERIALIZE, JME_RX_SERIALIZE, slz);
31f0d5a2
SZ
3450}
3451
3452static int
3453jme_tryserialize(struct ifnet *ifp, enum ifnet_serialize slz)
3454{
3455 struct jme_softc *sc = ifp->if_softc;
3456
29890f78
SZ
3457 return ifnet_serialize_array_try(sc->jme_serialize_arr,
3458 sc->jme_serialize_cnt, JME_TX_SERIALIZE, JME_RX_SERIALIZE, slz);
31f0d5a2
SZ
3459}
3460
3461#ifdef INVARIANTS
3462
3463static void
3464jme_serialize_assert(struct ifnet *ifp, enum ifnet_serialize slz,
3465 boolean_t serialized)
3466{
3467 struct jme_softc *sc = ifp->if_softc;
31f0d5a2 3468
29890f78
SZ
3469 ifnet_serialize_array_assert(sc->jme_serialize_arr,
3470 sc->jme_serialize_cnt, JME_TX_SERIALIZE, JME_RX_SERIALIZE,
3471 slz, serialized);
31f0d5a2
SZ
3472}
3473
3474#endif /* INVARIANTS */
58880b0d
SZ
3475
3476static void
3477jme_msix_try_alloc(device_t dev)
3478{
3479 struct jme_softc *sc = device_get_softc(dev);
3480 struct jme_msix_data *msix;
3481 int error, i, r, msix_enable, msix_count;
87aa452b 3482 int offset, offset_def;
58880b0d 3483
7b040092 3484 msix_count = 1 + sc->jme_cdata.jme_rx_ring_cnt;
58880b0d
SZ
3485 KKASSERT(msix_count <= JME_NMSIX);
3486
1cc217a9 3487 msix_enable = device_getenv_int(dev, "msix.enable", jme_msix_enable);
58880b0d
SZ
3488
3489 /*
3490 * We leave the 1st MSI-X vector unused, so we
3491 * actually need msix_count + 1 MSI-X vectors.
3492 */
3493 if (!msix_enable || pci_msix_count(dev) < (msix_count + 1))
3494 return;
3495
3496 for (i = 0; i < msix_count; ++i)
3497 sc->jme_msix[i].jme_msix_rid = -1;
3498
3499 i = 0;
3500
87aa452b
SZ
3501 /*
3502 * Setup TX MSI-X
3503 */
3504
3505 offset_def = device_get_unit(dev) % ncpus2;
3506 offset = device_getenv_int(dev, "msix.txoff", offset_def);
3507 if (offset >= ncpus2) {
3508 device_printf(dev, "invalid msix.txoff %d, use %d\n",
3509 offset, offset_def);
3510 offset = offset_def;
3511 }
3512
58880b0d 3513 msix = &sc->jme_msix[i++];
87aa452b
SZ
3514 msix->jme_msix_cpuid = offset;
3515 sc->jme_tx_cpuid = msix->jme_msix_cpuid;
58880b0d
SZ
3516 msix->jme_msix_arg = &sc->jme_cdata;
3517 msix->jme_msix_func = jme_msix_tx;
3518 msix->jme_msix_intrs = INTR_TXQ_COAL | INTR_TXQ_COAL_TO;
3519 msix->jme_msix_serialize = &sc->jme_cdata.jme_tx_serialize;
3520 ksnprintf(msix->jme_msix_desc, sizeof(msix->jme_msix_desc), "%s tx",
3521 device_get_nameunit(dev));
3522
87aa452b
SZ
3523 /*
3524 * Setup RX MSI-X
3525 */
3526
3527 if (sc->jme_cdata.jme_rx_ring_cnt == ncpus2) {
3528 offset = 0;
3529 } else {
3530 offset_def = (sc->jme_cdata.jme_rx_ring_cnt *
3531 device_get_unit(dev)) % ncpus2;
3532
3533 offset = device_getenv_int(dev, "msix.rxoff", offset_def);
3534 if (offset >= ncpus2 ||
3535 offset % sc->jme_cdata.jme_rx_ring_cnt != 0) {
3536 device_printf(dev, "invalid msix.rxoff %d, use %d\n",
3537 offset, offset_def);
3538 offset = offset_def;
3539 }
3540 }
3541
7b040092 3542 for (r = 0; r < sc->jme_cdata.jme_rx_ring_cnt; ++r) {
58880b0d
SZ
3543 struct jme_rxdata *rdata = &sc->jme_cdata.jme_rx_data[r];
3544
3545 msix = &sc->jme_msix[i++];
87aa452b
SZ
3546 msix->jme_msix_cpuid = r + offset;
3547 KKASSERT(msix->jme_msix_cpuid < ncpus2);
58880b0d
SZ
3548 msix->jme_msix_arg = rdata;
3549 msix->jme_msix_func = jme_msix_rx;
3550 msix->jme_msix_intrs = rdata->jme_rx_coal | rdata->jme_rx_empty;
3551 msix->jme_msix_serialize = &rdata->jme_rx_serialize;
3552 ksnprintf(msix->jme_msix_desc, sizeof(msix->jme_msix_desc),
3553 "%s rx%d", device_get_nameunit(dev), r);
3554 }
3555
3556 KKASSERT(i == msix_count);
3557
3558 error = pci_setup_msix(dev);
3559 if (error)
3560 return;
3561
3562 /* Setup jme_msix_cnt early, so we could cleanup */
3563 sc->jme_msix_cnt = msix_count;
3564
3565 for (i = 0; i < msix_count; ++i) {
3566 msix = &sc->jme_msix[i];
3567
3568 msix->jme_msix_vector = i + 1;
3569 error = pci_alloc_msix_vector(dev, msix->jme_msix_vector,
3570 &msix->jme_msix_rid, msix->jme_msix_cpuid);
3571 if (error)
3572 goto back;