1 /* $NetBSD: if_jme.c,v 1.30 2016/06/10 13:27:14 ozaki-r Exp $ */
2
3 /*
4 * Copyright (c) 2008 Manuel Bouyer. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following 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 ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 /*-
28 * Copyright (c) 2008, Pyun YongHyeon <yongari@FreeBSD.org>
29 * All rights reserved.
30 *
31 * Redistribution and use in source and binary forms, with or without
32 * modification, are permitted provided that the following conditions
33 * are met:
34 * 1. Redistributions of source code must retain the above copyright
35 * notice unmodified, this list of conditions, and the following
36 * disclaimer.
37 * 2. Redistributions in binary form must reproduce the above copyright
38 * notice, this list of conditions and the following disclaimer in the
39 * documentation and/or other materials provided with the distribution.
40 *
41 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 */
53
54
55 /*
56 * Driver for JMicron Technologies JMC250 (Giganbit) and JMC260 (Fast)
57 * Ethernet Controllers.
58 */
59
60 #include <sys/cdefs.h>
61 __KERNEL_RCSID(0, "$NetBSD: if_jme.c,v 1.30 2016/06/10 13:27:14 ozaki-r Exp $");
62
63
64 #include <sys/param.h>
65 #include <sys/systm.h>
66 #include <sys/mbuf.h>
67 #include <sys/protosw.h>
68 #include <sys/socket.h>
69 #include <sys/ioctl.h>
70 #include <sys/errno.h>
71 #include <sys/malloc.h>
72 #include <sys/kernel.h>
73 #include <sys/proc.h> /* only for declaration of wakeup() used by vm.h */
74 #include <sys/device.h>
75 #include <sys/syslog.h>
76 #include <sys/sysctl.h>
77
78 #include <net/if.h>
79 #if defined(SIOCSIFMEDIA)
80 #include <net/if_media.h>
81 #endif
82 #include <net/if_types.h>
83 #include <net/if_dl.h>
84 #include <net/route.h>
85 #include <net/netisr.h>
86
87 #include <net/bpf.h>
88 #include <net/bpfdesc.h>
89
90 #include <sys/rndsource.h>
91
92 #include <netinet/in.h>
93 #include <netinet/in_systm.h>
94 #include <netinet/ip.h>
95
96 #ifdef INET
97 #include <netinet/in_var.h>
98 #endif
99
100 #include <netinet/tcp.h>
101
102 #include <net/if_ether.h>
103 #if defined(INET)
104 #include <netinet/if_inarp.h>
105 #endif
106
107 #include <sys/bus.h>
108 #include <sys/intr.h>
109
110 #include <dev/pci/pcireg.h>
111 #include <dev/pci/pcivar.h>
112 #include <dev/pci/pcidevs.h>
113 #include <dev/pci/if_jmereg.h>
114
115 #include <dev/mii/mii.h>
116 #include <dev/mii/miivar.h>
117
118 struct jme_product_desc {
119 u_int32_t jme_product;
120 const char *jme_desc;
121 };
122
123 /* number of entries in transmit and receive rings */
124 #define JME_NBUFS (PAGE_SIZE / sizeof(struct jme_desc))
125
126 #define JME_DESC_INC(x, y) ((x) = ((x) + 1) % (y))
127
128 /* Water mark to kick reclaiming Tx buffers. */
129 #define JME_TX_DESC_HIWAT (JME_NBUFS - (((JME_NBUFS) * 3) / 10))
130
131
132 struct jme_softc {
133 device_t jme_dev; /* base device */
134 bus_space_tag_t jme_bt_mac;
135 bus_space_handle_t jme_bh_mac; /* Mac registers */
136 bus_space_tag_t jme_bt_phy;
137 bus_space_handle_t jme_bh_phy; /* PHY registers */
138 bus_space_tag_t jme_bt_misc;
139 bus_space_handle_t jme_bh_misc; /* Misc registers */
140 bus_dma_tag_t jme_dmatag;
141 bus_dma_segment_t jme_txseg; /* transmit ring seg */
142 bus_dmamap_t jme_txmap; /* transmit ring DMA map */
143 struct jme_desc* jme_txring; /* transmit ring */
144 bus_dmamap_t jme_txmbufm[JME_NBUFS]; /* transmit mbufs DMA map */
145 struct mbuf *jme_txmbuf[JME_NBUFS]; /* mbufs being transmitted */
146 int jme_tx_cons; /* transmit ring consumer */
147 int jme_tx_prod; /* transmit ring producer */
148 int jme_tx_cnt; /* transmit ring active count */
149 bus_dma_segment_t jme_rxseg; /* receive ring seg */
150 bus_dmamap_t jme_rxmap; /* receive ring DMA map */
151 struct jme_desc* jme_rxring; /* receive ring */
152 bus_dmamap_t jme_rxmbufm[JME_NBUFS]; /* receive mbufs DMA map */
153 struct mbuf *jme_rxmbuf[JME_NBUFS]; /* mbufs being received */
154 int jme_rx_cons; /* receive ring consumer */
155 int jme_rx_prod; /* receive ring producer */
156 void* jme_ih; /* our interrupt */
157 struct ethercom jme_ec;
158 struct callout jme_tick_ch; /* tick callout */
159 u_int8_t jme_enaddr[ETHER_ADDR_LEN];/* hardware address */
160 u_int8_t jme_phyaddr; /* address of integrated phy */
161 u_int8_t jme_chip_rev; /* chip revision */
162 u_int8_t jme_rev; /* PCI revision */
163 mii_data_t jme_mii; /* mii bus */
164 u_int32_t jme_flags; /* device features, see below */
165 uint32_t jme_txcsr; /* TX config register */
166 uint32_t jme_rxcsr; /* RX config register */
167 krndsource_t rnd_source;
168 /* interrupt coalition parameters */
169 struct sysctllog *jme_clog;
170 int jme_intrxto; /* interrupt RX timeout */
171 int jme_intrxct; /* interrupt RX packets counter */
172 int jme_inttxto; /* interrupt TX timeout */
173 int jme_inttxct; /* interrupt TX packets counter */
174 };
175
176 #define JME_FLAG_FPGA 0x0001 /* FPGA version */
177 #define JME_FLAG_GIGA 0x0002 /* giga Ethernet capable */
178
179
180 #define jme_if jme_ec.ec_if
181 #define jme_bpf jme_if.if_bpf
182
183 typedef struct jme_softc jme_softc_t;
184 typedef u_long ioctl_cmd_t;
185
186 static int jme_pci_match(device_t, cfdata_t, void *);
187 static void jme_pci_attach(device_t, device_t, void *);
188 static void jme_intr_rx(jme_softc_t *);
189 static int jme_intr(void *);
190
191 static int jme_ifioctl(struct ifnet *, ioctl_cmd_t, void *);
192 static int jme_mediachange(struct ifnet *);
193 static void jme_ifwatchdog(struct ifnet *);
194 static bool jme_shutdown(device_t, int);
195
196 static void jme_txeof(struct jme_softc *);
197 static void jme_ifstart(struct ifnet *);
198 static void jme_reset(jme_softc_t *);
199 static int jme_ifinit(struct ifnet *);
200 static int jme_init(struct ifnet *, int);
201 static void jme_stop(struct ifnet *, int);
202 // static void jme_restart(void *);
203 static void jme_ticks(void *);
204 static void jme_mac_config(jme_softc_t *);
205 static void jme_set_filter(jme_softc_t *);
206
207 int jme_mii_read(device_t, int, int);
208 void jme_mii_write(device_t, int, int, int);
209 void jme_statchg(struct ifnet *);
210
211 static int jme_eeprom_read_byte(struct jme_softc *, uint8_t, uint8_t *);
212 static int jme_eeprom_macaddr(struct jme_softc *);
213 static int jme_reg_macaddr(struct jme_softc *);
214
215 #define JME_TIMEOUT 1000
216 #define JME_PHY_TIMEOUT 1000
217 #define JME_EEPROM_TIMEOUT 1000
218
219 static int jme_sysctl_intrxto(SYSCTLFN_PROTO);
220 static int jme_sysctl_intrxct(SYSCTLFN_PROTO);
221 static int jme_sysctl_inttxto(SYSCTLFN_PROTO);
222 static int jme_sysctl_inttxct(SYSCTLFN_PROTO);
223 static int jme_root_num;
224
225
226 CFATTACH_DECL_NEW(jme, sizeof(jme_softc_t),
227 jme_pci_match, jme_pci_attach, NULL, NULL);
228
229 static const struct jme_product_desc jme_products[] = {
230 { PCI_PRODUCT_JMICRON_JMC250,
231 "JMicron JMC250 Gigabit Ethernet Controller" },
232 { PCI_PRODUCT_JMICRON_JMC260,
233 "JMicron JMC260 Gigabit Ethernet Controller" },
234 { 0, NULL },
235 };
236
237 static const struct jme_product_desc *jme_lookup_product(uint32_t);
238
239 static const struct jme_product_desc *
jme_lookup_product(uint32_t id)240 jme_lookup_product(uint32_t id)
241 {
242 const struct jme_product_desc *jp;
243
244 for (jp = jme_products ; jp->jme_desc != NULL; jp++)
245 if (PCI_PRODUCT(id) == jp->jme_product)
246 return jp;
247
248 return NULL;
249 }
250
251 static int
jme_pci_match(device_t parent,cfdata_t cf,void * aux)252 jme_pci_match(device_t parent, cfdata_t cf, void *aux)
253 {
254 struct pci_attach_args *pa = (struct pci_attach_args *)aux;
255
256 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_JMICRON)
257 return 0;
258
259 if (jme_lookup_product(pa->pa_id) != NULL)
260 return 1;
261
262 return 0;
263 }
264
265 static void
jme_pci_attach(device_t parent,device_t self,void * aux)266 jme_pci_attach(device_t parent, device_t self, void *aux)
267 {
268 jme_softc_t *sc = device_private(self);
269 struct pci_attach_args * const pa = (struct pci_attach_args *)aux;
270 const struct jme_product_desc *jp;
271 struct ifnet * const ifp = &sc->jme_if;
272 bus_space_tag_t iot1, iot2, memt;
273 bus_space_handle_t ioh1, ioh2, memh;
274 bus_size_t size, size2;
275 pci_intr_handle_t intrhandle;
276 const char *intrstr;
277 pcireg_t csr;
278 int nsegs, i;
279 const struct sysctlnode *node;
280 int jme_nodenum;
281 char intrbuf[PCI_INTRSTR_LEN];
282
283 sc->jme_dev = self;
284 aprint_normal("\n");
285 callout_init(&sc->jme_tick_ch, 0);
286
287 jp = jme_lookup_product(pa->pa_id);
288 if (jp == NULL)
289 panic("jme_pci_attach: impossible");
290
291 if (jp->jme_product == PCI_PRODUCT_JMICRON_JMC250)
292 sc->jme_flags = JME_FLAG_GIGA;
293
294 /*
295 * Map the card space. Try Mem first.
296 */
297 if (pci_mapreg_map(pa, JME_PCI_BAR0,
298 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT,
299 0, &memt, &memh, NULL, &size) == 0) {
300 sc->jme_bt_mac = memt;
301 sc->jme_bh_mac = memh;
302 sc->jme_bt_phy = memt;
303 if (bus_space_subregion(memt, memh, JME_PHY_EEPROM_BASE_MEMOFF,
304 JME_PHY_EEPROM_SIZE, &sc->jme_bh_phy) != 0) {
305 aprint_error_dev(self, "can't subregion PHY space\n");
306 bus_space_unmap(memt, memh, size);
307 return;
308 }
309 sc->jme_bt_misc = memt;
310 if (bus_space_subregion(memt, memh, JME_MISC_BASE_MEMOFF,
311 JME_MISC_SIZE, &sc->jme_bh_misc) != 0) {
312 aprint_error_dev(self, "can't subregion misc space\n");
313 bus_space_unmap(memt, memh, size);
314 return;
315 }
316 } else {
317 if (pci_mapreg_map(pa, JME_PCI_BAR1, PCI_MAPREG_TYPE_IO,
318 0, &iot1, &ioh1, NULL, &size) != 0) {
319 aprint_error_dev(self, "can't map I/O space 1\n");
320 return;
321 }
322 sc->jme_bt_mac = iot1;
323 sc->jme_bh_mac = ioh1;
324 if (pci_mapreg_map(pa, JME_PCI_BAR2, PCI_MAPREG_TYPE_IO,
325 0, &iot2, &ioh2, NULL, &size2) != 0) {
326 aprint_error_dev(self, "can't map I/O space 2\n");
327 bus_space_unmap(iot1, ioh1, size);
328 return;
329 }
330 sc->jme_bt_phy = iot2;
331 sc->jme_bh_phy = ioh2;
332 sc->jme_bt_misc = iot2;
333 if (bus_space_subregion(iot2, ioh2, JME_MISC_BASE_IOOFF,
334 JME_MISC_SIZE, &sc->jme_bh_misc) != 0) {
335 aprint_error_dev(self, "can't subregion misc space\n");
336 bus_space_unmap(iot1, ioh1, size);
337 bus_space_unmap(iot2, ioh2, size2);
338 return;
339 }
340 }
341
342 if (pci_dma64_available(pa))
343 sc->jme_dmatag = pa->pa_dmat64;
344 else
345 sc->jme_dmatag = pa->pa_dmat;
346
347 /* Enable the device. */
348 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
349 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
350 csr | PCI_COMMAND_MASTER_ENABLE);
351
352 aprint_normal_dev(self, "%s\n", jp->jme_desc);
353
354 sc->jme_rev = PCI_REVISION(pa->pa_class);
355
356 csr = bus_space_read_4(sc->jme_bt_misc, sc->jme_bh_misc, JME_CHIPMODE);
357 if (((csr & CHIPMODE_FPGA_REV_MASK) >> CHIPMODE_FPGA_REV_SHIFT) !=
358 CHIPMODE_NOT_FPGA)
359 sc->jme_flags |= JME_FLAG_FPGA;
360 sc->jme_chip_rev = (csr & CHIPMODE_REV_MASK) >> CHIPMODE_REV_SHIFT;
361 aprint_verbose_dev(self, "PCI device revision : 0x%x, Chip revision: "
362 "0x%x", sc->jme_rev, sc->jme_chip_rev);
363 if (sc->jme_flags & JME_FLAG_FPGA)
364 aprint_verbose(" FPGA revision: 0x%x",
365 (csr & CHIPMODE_FPGA_REV_MASK) >> CHIPMODE_FPGA_REV_SHIFT);
366 aprint_verbose("\n");
367
368 /*
369 * Save PHY address.
370 * Integrated JR0211 has fixed PHY address whereas FPGA version
371 * requires PHY probing to get correct PHY address.
372 */
373 if ((sc->jme_flags & JME_FLAG_FPGA) == 0) {
374 sc->jme_phyaddr =
375 bus_space_read_4(sc->jme_bt_misc, sc->jme_bh_misc,
376 JME_GPREG0) & GPREG0_PHY_ADDR_MASK;
377 } else
378 sc->jme_phyaddr = 0;
379
380
381 jme_reset(sc);
382
383 /* read mac addr */
384 if (jme_eeprom_macaddr(sc) && jme_reg_macaddr(sc)) {
385 aprint_error_dev(self, "error reading Ethernet address\n");
386 /* return; */
387 }
388 aprint_normal_dev(self, "Ethernet address %s\n",
389 ether_sprintf(sc->jme_enaddr));
390
391 /* Map and establish interrupts */
392 if (pci_intr_map(pa, &intrhandle)) {
393 aprint_error_dev(self, "couldn't map interrupt\n");
394 return;
395 }
396 intrstr = pci_intr_string(pa->pa_pc, intrhandle, intrbuf, sizeof(intrbuf));
397 sc->jme_if.if_softc = sc;
398 sc->jme_ih = pci_intr_establish(pa->pa_pc, intrhandle, IPL_NET,
399 jme_intr, sc);
400 if (sc->jme_ih == NULL) {
401 aprint_error_dev(self, "couldn't establish interrupt");
402 if (intrstr != NULL)
403 aprint_error(" at %s", intrstr);
404 aprint_error("\n");
405 return;
406 }
407 aprint_normal_dev(self, "interrupting at %s\n", intrstr);
408
409 /* allocate and map DMA-safe memory for transmit ring */
410 if (bus_dmamem_alloc(sc->jme_dmatag, PAGE_SIZE, 0, PAGE_SIZE,
411 &sc->jme_txseg, 1, &nsegs, BUS_DMA_NOWAIT) != 0 ||
412 bus_dmamem_map(sc->jme_dmatag, &sc->jme_txseg,
413 nsegs, PAGE_SIZE, (void **)&sc->jme_txring,
414 BUS_DMA_NOWAIT | BUS_DMA_COHERENT) != 0 ||
415 bus_dmamap_create(sc->jme_dmatag, PAGE_SIZE, 1, PAGE_SIZE, 0,
416 BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &sc->jme_txmap) != 0 ||
417 bus_dmamap_load(sc->jme_dmatag, sc->jme_txmap, sc->jme_txring,
418 PAGE_SIZE, NULL, BUS_DMA_NOWAIT) != 0) {
419 aprint_error_dev(self, "can't allocate DMA memory TX ring\n");
420 return;
421 }
422 /* allocate and map DMA-safe memory for receive ring */
423 if (bus_dmamem_alloc(sc->jme_dmatag, PAGE_SIZE, 0, PAGE_SIZE,
424 &sc->jme_rxseg, 1, &nsegs, BUS_DMA_NOWAIT) != 0 ||
425 bus_dmamem_map(sc->jme_dmatag, &sc->jme_rxseg,
426 nsegs, PAGE_SIZE, (void **)&sc->jme_rxring,
427 BUS_DMA_NOWAIT | BUS_DMA_COHERENT) != 0 ||
428 bus_dmamap_create(sc->jme_dmatag, PAGE_SIZE, 1, PAGE_SIZE, 0,
429 BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &sc->jme_rxmap) != 0 ||
430 bus_dmamap_load(sc->jme_dmatag, sc->jme_rxmap, sc->jme_rxring,
431 PAGE_SIZE, NULL, BUS_DMA_NOWAIT) != 0) {
432 aprint_error_dev(self, "can't allocate DMA memory RX ring\n");
433 return;
434 }
435 for (i = 0; i < JME_NBUFS; i++) {
436 sc->jme_txmbuf[i] = sc->jme_rxmbuf[i] = NULL;
437 if (bus_dmamap_create(sc->jme_dmatag, JME_MAX_TX_LEN,
438 JME_NBUFS, JME_MAX_TX_LEN, 0,
439 BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW,
440 &sc->jme_txmbufm[i]) != 0) {
441 aprint_error_dev(self, "can't allocate DMA TX map\n");
442 return;
443 }
444 if (bus_dmamap_create(sc->jme_dmatag, JME_MAX_RX_LEN,
445 1, JME_MAX_RX_LEN, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW,
446 &sc->jme_rxmbufm[i]) != 0) {
447 aprint_error_dev(self, "can't allocate DMA RX map\n");
448 return;
449 }
450 }
451 /*
452 * Initialize our media structures and probe the MII.
453 *
454 * Note that we don't care about the media instance. We
455 * are expecting to have multiple PHYs on the 10/100 cards,
456 * and on those cards we exclude the internal PHY from providing
457 * 10baseT. By ignoring the instance, it allows us to not have
458 * to specify it on the command line when switching media.
459 */
460 sc->jme_mii.mii_ifp = ifp;
461 sc->jme_mii.mii_readreg = jme_mii_read;
462 sc->jme_mii.mii_writereg = jme_mii_write;
463 sc->jme_mii.mii_statchg = jme_statchg;
464 sc->jme_ec.ec_mii = &sc->jme_mii;
465 ifmedia_init(&sc->jme_mii.mii_media, IFM_IMASK, jme_mediachange,
466 ether_mediastatus);
467 mii_attach(self, &sc->jme_mii, 0xffffffff, MII_PHY_ANY,
468 MII_OFFSET_ANY, 0);
469 if (LIST_FIRST(&sc->jme_mii.mii_phys) == NULL) {
470 ifmedia_add(&sc->jme_mii.mii_media, IFM_ETHER|IFM_NONE, 0, NULL);
471 ifmedia_set(&sc->jme_mii.mii_media, IFM_ETHER|IFM_NONE);
472 } else
473 ifmedia_set(&sc->jme_mii.mii_media, IFM_ETHER|IFM_AUTO);
474
475 /*
476 * We can support 802.1Q VLAN-sized frames.
477 */
478 sc->jme_ec.ec_capabilities |=
479 ETHERCAP_VLAN_MTU | ETHERCAP_VLAN_HWTAGGING;
480
481 if (sc->jme_flags & JME_FLAG_GIGA)
482 sc->jme_ec.ec_capabilities |= ETHERCAP_JUMBO_MTU;
483
484
485 strlcpy(ifp->if_xname, device_xname(self), IFNAMSIZ);
486 ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_NOTRAILERS|IFF_MULTICAST;
487 ifp->if_ioctl = jme_ifioctl;
488 ifp->if_start = jme_ifstart;
489 ifp->if_watchdog = jme_ifwatchdog;
490 ifp->if_init = jme_ifinit;
491 ifp->if_stop = jme_stop;
492 ifp->if_timer = 0;
493 ifp->if_capabilities |=
494 IFCAP_CSUM_IPv4_Tx | IFCAP_CSUM_IPv4_Rx |
495 IFCAP_CSUM_TCPv4_Tx | IFCAP_CSUM_TCPv4_Rx |
496 IFCAP_CSUM_UDPv4_Tx | IFCAP_CSUM_UDPv4_Rx |
497 IFCAP_CSUM_TCPv6_Tx | /* IFCAP_CSUM_TCPv6_Rx | hardware bug */
498 IFCAP_CSUM_UDPv6_Tx | /* IFCAP_CSUM_UDPv6_Rx | hardware bug */
499 IFCAP_TSOv4 | IFCAP_TSOv6;
500 IFQ_SET_READY(&ifp->if_snd);
501 if_attach(ifp);
502 ether_ifattach(&(sc)->jme_if, (sc)->jme_enaddr);
503
504 /*
505 * Add shutdown hook so that DMA is disabled prior to reboot.
506 */
507 if (pmf_device_register1(self, NULL, NULL, jme_shutdown))
508 pmf_class_network_register(self, ifp);
509 else
510 aprint_error_dev(self, "couldn't establish power handler\n");
511
512 rnd_attach_source(&sc->rnd_source, device_xname(self),
513 RND_TYPE_NET, RND_FLAG_DEFAULT);
514
515 sc->jme_intrxto = PCCRX_COAL_TO_DEFAULT;
516 sc->jme_intrxct = PCCRX_COAL_PKT_DEFAULT;
517 sc->jme_inttxto = PCCTX_COAL_TO_DEFAULT;
518 sc->jme_inttxct = PCCTX_COAL_PKT_DEFAULT;
519 if (sysctl_createv(&sc->jme_clog, 0, NULL, &node,
520 0, CTLTYPE_NODE, device_xname(sc->jme_dev),
521 SYSCTL_DESCR("jme per-controller controls"),
522 NULL, 0, NULL, 0, CTL_HW, jme_root_num, CTL_CREATE,
523 CTL_EOL) != 0) {
524 aprint_normal_dev(sc->jme_dev, "couldn't create sysctl node\n");
525 return;
526 }
527 jme_nodenum = node->sysctl_num;
528
529 /* interrupt moderation sysctls */
530 if (sysctl_createv(&sc->jme_clog, 0, NULL, &node,
531 CTLFLAG_READWRITE,
532 CTLTYPE_INT, "int_rxto",
533 SYSCTL_DESCR("jme RX interrupt moderation timer"),
534 jme_sysctl_intrxto, 0, (void *)sc,
535 0, CTL_HW, jme_root_num, jme_nodenum, CTL_CREATE,
536 CTL_EOL) != 0) {
537 aprint_normal_dev(sc->jme_dev,
538 "couldn't create int_rxto sysctl node\n");
539 }
540 if (sysctl_createv(&sc->jme_clog, 0, NULL, &node,
541 CTLFLAG_READWRITE,
542 CTLTYPE_INT, "int_rxct",
543 SYSCTL_DESCR("jme RX interrupt moderation packet counter"),
544 jme_sysctl_intrxct, 0, (void *)sc,
545 0, CTL_HW, jme_root_num, jme_nodenum, CTL_CREATE,
546 CTL_EOL) != 0) {
547 aprint_normal_dev(sc->jme_dev,
548 "couldn't create int_rxct sysctl node\n");
549 }
550 if (sysctl_createv(&sc->jme_clog, 0, NULL, &node,
551 CTLFLAG_READWRITE,
552 CTLTYPE_INT, "int_txto",
553 SYSCTL_DESCR("jme TX interrupt moderation timer"),
554 jme_sysctl_inttxto, 0, (void *)sc,
555 0, CTL_HW, jme_root_num, jme_nodenum, CTL_CREATE,
556 CTL_EOL) != 0) {
557 aprint_normal_dev(sc->jme_dev,
558 "couldn't create int_txto sysctl node\n");
559 }
560 if (sysctl_createv(&sc->jme_clog, 0, NULL, &node,
561 CTLFLAG_READWRITE,
562 CTLTYPE_INT, "int_txct",
563 SYSCTL_DESCR("jme TX interrupt moderation packet counter"),
564 jme_sysctl_inttxct, 0, (void *)sc,
565 0, CTL_HW, jme_root_num, jme_nodenum, CTL_CREATE,
566 CTL_EOL) != 0) {
567 aprint_normal_dev(sc->jme_dev,
568 "couldn't create int_txct sysctl node\n");
569 }
570 }
571
572 static void
jme_stop_rx(jme_softc_t * sc)573 jme_stop_rx(jme_softc_t *sc)
574 {
575 uint32_t reg;
576 int i;
577
578 reg = bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXCSR);
579 if ((reg & RXCSR_RX_ENB) == 0)
580 return;
581 reg &= ~RXCSR_RX_ENB;
582 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXCSR, reg);
583 for (i = JME_TIMEOUT / 10; i > 0; i--) {
584 DELAY(10);
585 if ((bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac,
586 JME_RXCSR) & RXCSR_RX_ENB) == 0)
587 break;
588 }
589 if (i == 0)
590 aprint_error_dev(sc->jme_dev, "stopping recevier timeout!\n");
591
592 }
593
594 static void
jme_stop_tx(jme_softc_t * sc)595 jme_stop_tx(jme_softc_t *sc)
596 {
597 uint32_t reg;
598 int i;
599
600 reg = bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXCSR);
601 if ((reg & TXCSR_TX_ENB) == 0)
602 return;
603 reg &= ~TXCSR_TX_ENB;
604 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXCSR, reg);
605 for (i = JME_TIMEOUT / 10; i > 0; i--) {
606 DELAY(10);
607 if ((bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac,
608 JME_TXCSR) & TXCSR_TX_ENB) == 0)
609 break;
610 }
611 if (i == 0)
612 aprint_error_dev(sc->jme_dev,
613 "stopping transmitter timeout!\n");
614 }
615
616 static void
jme_reset(jme_softc_t * sc)617 jme_reset(jme_softc_t *sc)
618 {
619 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_GHC, GHC_RESET);
620 DELAY(10);
621 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_GHC, 0);
622 }
623
624 static bool
jme_shutdown(device_t self,int howto)625 jme_shutdown(device_t self, int howto)
626 {
627 jme_softc_t *sc;
628 struct ifnet *ifp;
629
630 sc = device_private(self);
631 ifp = &sc->jme_if;
632 jme_stop(ifp, 1);
633
634 return true;
635 }
636
637 static void
jme_stop(struct ifnet * ifp,int disable)638 jme_stop(struct ifnet *ifp, int disable)
639 {
640 jme_softc_t *sc = ifp->if_softc;
641 int i;
642 /* Stop receiver, transmitter. */
643 jme_stop_rx(sc);
644 jme_stop_tx(sc);
645 /* free receive mbufs */
646 for (i = 0; i < JME_NBUFS; i++) {
647 if (sc->jme_rxmbuf[i]) {
648 bus_dmamap_unload(sc->jme_dmatag, sc->jme_rxmbufm[i]);
649 m_freem(sc->jme_rxmbuf[i]);
650 }
651 sc->jme_rxmbuf[i] = NULL;
652 }
653 /* process completed transmits */
654 jme_txeof(sc);
655 /* free abort pending transmits */
656 for (i = 0; i < JME_NBUFS; i++) {
657 if (sc->jme_txmbuf[i]) {
658 bus_dmamap_unload(sc->jme_dmatag, sc->jme_txmbufm[i]);
659 m_freem(sc->jme_txmbuf[i]);
660 sc->jme_txmbuf[i] = NULL;
661 }
662 }
663 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
664 ifp->if_timer = 0;
665 }
666
667 #if 0
668 static void
669 jme_restart(void *v)
670 {
671
672 jme_init(v);
673 }
674 #endif
675
676 static int
jme_add_rxbuf(jme_softc_t * sc,struct mbuf * m)677 jme_add_rxbuf(jme_softc_t *sc, struct mbuf *m)
678 {
679 int error;
680 bus_dmamap_t map;
681 int i = sc->jme_rx_prod;
682
683 if (sc->jme_rxmbuf[i] != NULL) {
684 aprint_error_dev(sc->jme_dev,
685 "mbuf already here: rxprod %d rxcons %d\n",
686 sc->jme_rx_prod, sc->jme_rx_cons);
687 if (m)
688 m_freem(m);
689 return EINVAL;
690 }
691
692 if (m == NULL) {
693 sc->jme_rxmbuf[i] = NULL;
694 MGETHDR(m, M_DONTWAIT, MT_DATA);
695 if (m == NULL)
696 return (ENOBUFS);
697 MCLGET(m, M_DONTWAIT);
698 if ((m->m_flags & M_EXT) == 0) {
699 m_freem(m);
700 return (ENOBUFS);
701 }
702 }
703 map = sc->jme_rxmbufm[i];
704 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size;
705 KASSERT(m->m_len == MCLBYTES);
706
707 error = bus_dmamap_load_mbuf(sc->jme_dmatag, map, m,
708 BUS_DMA_READ|BUS_DMA_NOWAIT);
709 if (error) {
710 sc->jme_rxmbuf[i] = NULL;
711 aprint_error_dev(sc->jme_dev,
712 "unable to load rx DMA map %d, error = %d\n",
713 i, error);
714 m_freem(m);
715 return (error);
716 }
717 bus_dmamap_sync(sc->jme_dmatag, map, 0, map->dm_mapsize,
718 BUS_DMASYNC_PREREAD);
719
720 sc->jme_rxmbuf[i] = m;
721
722 sc->jme_rxring[i].buflen = htole32(map->dm_segs[0].ds_len);
723 sc->jme_rxring[i].addr_lo =
724 htole32(JME_ADDR_LO(map->dm_segs[0].ds_addr));
725 sc->jme_rxring[i].addr_hi =
726 htole32(JME_ADDR_HI(map->dm_segs[0].ds_addr));
727 sc->jme_rxring[i].flags =
728 htole32(JME_RD_OWN | JME_RD_INTR | JME_RD_64BIT);
729 bus_dmamap_sync(sc->jme_dmatag, sc->jme_rxmap,
730 i * sizeof(struct jme_desc), sizeof(struct jme_desc),
731 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
732 JME_DESC_INC(sc->jme_rx_prod, JME_NBUFS);
733 return (0);
734 }
735
736 static int
jme_ifinit(struct ifnet * ifp)737 jme_ifinit(struct ifnet *ifp)
738 {
739 return jme_init(ifp, 1);
740 }
741
742 static int
jme_init(struct ifnet * ifp,int do_ifinit)743 jme_init(struct ifnet *ifp, int do_ifinit)
744 {
745 jme_softc_t *sc = ifp->if_softc;
746 int i, s;
747 uint8_t eaddr[ETHER_ADDR_LEN];
748 uint32_t reg;
749
750 s = splnet();
751 /* cancel any pending IO */
752 jme_stop(ifp, 1);
753 jme_reset(sc);
754 if ((sc->jme_if.if_flags & IFF_UP) == 0) {
755 splx(s);
756 return 0;
757 }
758 /* allocate receive ring */
759 sc->jme_rx_prod = 0;
760 for (i = 0; i < JME_NBUFS; i++) {
761 if (jme_add_rxbuf(sc, NULL) < 0) {
762 aprint_error_dev(sc->jme_dev,
763 "can't allocate rx mbuf\n");
764 for (i--; i >= 0; i--) {
765 bus_dmamap_unload(sc->jme_dmatag,
766 sc->jme_rxmbufm[i]);
767 m_freem(sc->jme_rxmbuf[i]);
768 sc->jme_rxmbuf[i] = NULL;
769 }
770 splx(s);
771 return ENOMEM;
772 }
773 }
774 /* init TX ring */
775 memset(sc->jme_txring, 0, JME_NBUFS * sizeof(struct jme_desc));
776 bus_dmamap_sync(sc->jme_dmatag, sc->jme_txmap,
777 0, JME_NBUFS * sizeof(struct jme_desc),
778 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
779 for (i = 0; i < JME_NBUFS; i++)
780 sc->jme_txmbuf[i] = NULL;
781 sc->jme_tx_cons = sc->jme_tx_prod = sc->jme_tx_cnt = 0;
782
783 /* Reprogram the station address. */
784 memcpy(eaddr, CLLADDR(ifp->if_sadl), ETHER_ADDR_LEN);
785 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_PAR0,
786 eaddr[3] << 24 | eaddr[2] << 16 | eaddr[1] << 8 | eaddr[0]);
787 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac,
788 JME_PAR1, eaddr[5] << 8 | eaddr[4]);
789
790 /*
791 * Configure Tx queue.
792 * Tx priority queue weight value : 0
793 * Tx FIFO threshold for processing next packet : 16QW
794 * Maximum Tx DMA length : 512
795 * Allow Tx DMA burst.
796 */
797 sc->jme_txcsr = TXCSR_TXQ_N_SEL(TXCSR_TXQ0);
798 sc->jme_txcsr |= TXCSR_TXQ_WEIGHT(TXCSR_TXQ_WEIGHT_MIN);
799 sc->jme_txcsr |= TXCSR_FIFO_THRESH_16QW;
800 sc->jme_txcsr |= TXCSR_DMA_SIZE_512;
801 sc->jme_txcsr |= TXCSR_DMA_BURST;
802 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac,
803 JME_TXCSR, sc->jme_txcsr);
804
805 /* Set Tx descriptor counter. */
806 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac,
807 JME_TXQDC, JME_NBUFS);
808
809 /* Set Tx ring address to the hardware. */
810 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXDBA_HI,
811 JME_ADDR_HI(sc->jme_txmap->dm_segs[0].ds_addr));
812 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXDBA_LO,
813 JME_ADDR_LO(sc->jme_txmap->dm_segs[0].ds_addr));
814
815 /* Configure TxMAC parameters. */
816 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXMAC,
817 TXMAC_IFG1_DEFAULT | TXMAC_IFG2_DEFAULT | TXMAC_IFG_ENB |
818 TXMAC_THRESH_1_PKT | TXMAC_CRC_ENB | TXMAC_PAD_ENB);
819
820 /*
821 * Configure Rx queue.
822 * FIFO full threshold for transmitting Tx pause packet : 128T
823 * FIFO threshold for processing next packet : 128QW
824 * Rx queue 0 select
825 * Max Rx DMA length : 128
826 * Rx descriptor retry : 32
827 * Rx descriptor retry time gap : 256ns
828 * Don't receive runt/bad frame.
829 */
830 sc->jme_rxcsr = RXCSR_FIFO_FTHRESH_128T;
831 /*
832 * Since Rx FIFO size is 4K bytes, receiving frames larger
833 * than 4K bytes will suffer from Rx FIFO overruns. So
834 * decrease FIFO threshold to reduce the FIFO overruns for
835 * frames larger than 4000 bytes.
836 * For best performance of standard MTU sized frames use
837 * maximum allowable FIFO threshold, 128QW.
838 */
839 if ((ifp->if_mtu + ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN +
840 ETHER_CRC_LEN) > JME_RX_FIFO_SIZE)
841 sc->jme_rxcsr |= RXCSR_FIFO_THRESH_16QW;
842 else
843 sc->jme_rxcsr |= RXCSR_FIFO_THRESH_128QW;
844 sc->jme_rxcsr |= RXCSR_DMA_SIZE_128 | RXCSR_RXQ_N_SEL(RXCSR_RXQ0);
845 sc->jme_rxcsr |= RXCSR_DESC_RT_CNT(RXCSR_DESC_RT_CNT_DEFAULT);
846 sc->jme_rxcsr |= RXCSR_DESC_RT_GAP_256 & RXCSR_DESC_RT_GAP_MASK;
847 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac,
848 JME_RXCSR, sc->jme_rxcsr);
849
850 /* Set Rx descriptor counter. */
851 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac,
852 JME_RXQDC, JME_NBUFS);
853
854 /* Set Rx ring address to the hardware. */
855 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXDBA_HI,
856 JME_ADDR_HI(sc->jme_rxmap->dm_segs[0].ds_addr));
857 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXDBA_LO,
858 JME_ADDR_LO(sc->jme_rxmap->dm_segs[0].ds_addr));
859
860 /* Clear receive filter. */
861 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXMAC, 0);
862 /* Set up the receive filter. */
863 jme_set_filter(sc);
864
865 /*
866 * Disable all WOL bits as WOL can interfere normal Rx
867 * operation. Also clear WOL detection status bits.
868 */
869 reg = bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_PMCS);
870 reg &= ~PMCS_WOL_ENB_MASK;
871 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_PMCS, reg);
872
873 reg = bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXMAC);
874 /*
875 * Pad 10bytes right before received frame. This will greatly
876 * help Rx performance on strict-alignment architectures as
877 * it does not need to copy the frame to align the payload.
878 */
879 reg |= RXMAC_PAD_10BYTES;
880 if ((ifp->if_capenable &
881 (IFCAP_CSUM_IPv4_Rx|IFCAP_CSUM_TCPv4_Rx|IFCAP_CSUM_UDPv4_Rx|
882 IFCAP_CSUM_TCPv6_Rx|IFCAP_CSUM_UDPv6_Rx)) != 0)
883 reg |= RXMAC_CSUM_ENB;
884 reg |= RXMAC_VLAN_ENB; /* enable hardware vlan */
885 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXMAC, reg);
886
887 /* Configure general purpose reg0 */
888 reg = bus_space_read_4(sc->jme_bt_misc, sc->jme_bh_misc, JME_GPREG0);
889 reg &= ~GPREG0_PCC_UNIT_MASK;
890 /* Set PCC timer resolution to micro-seconds unit. */
891 reg |= GPREG0_PCC_UNIT_US;
892 /*
893 * Disable all shadow register posting as we have to read
894 * JME_INTR_STATUS register in jme_int_task. Also it seems
895 * that it's hard to synchronize interrupt status between
896 * hardware and software with shadow posting due to
897 * requirements of bus_dmamap_sync(9).
898 */
899 reg |= GPREG0_SH_POST_DW7_DIS | GPREG0_SH_POST_DW6_DIS |
900 GPREG0_SH_POST_DW5_DIS | GPREG0_SH_POST_DW4_DIS |
901 GPREG0_SH_POST_DW3_DIS | GPREG0_SH_POST_DW2_DIS |
902 GPREG0_SH_POST_DW1_DIS | GPREG0_SH_POST_DW0_DIS;
903 /* Disable posting of DW0. */
904 reg &= ~GPREG0_POST_DW0_ENB;
905 /* Clear PME message. */
906 reg &= ~GPREG0_PME_ENB;
907 /* Set PHY address. */
908 reg &= ~GPREG0_PHY_ADDR_MASK;
909 reg |= sc->jme_phyaddr;
910 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc, JME_GPREG0, reg);
911
912 /* Configure Tx queue 0 packet completion coalescing. */
913 reg = (sc->jme_inttxto << PCCTX_COAL_TO_SHIFT) & PCCTX_COAL_TO_MASK;
914 reg |= (sc->jme_inttxct << PCCTX_COAL_PKT_SHIFT) & PCCTX_COAL_PKT_MASK;
915 reg |= PCCTX_COAL_TXQ0;
916 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc, JME_PCCTX, reg);
917
918 /* Configure Rx queue 0 packet completion coalescing. */
919 reg = (sc->jme_intrxto << PCCRX_COAL_TO_SHIFT) & PCCRX_COAL_TO_MASK;
920 reg |= (sc->jme_intrxct << PCCRX_COAL_PKT_SHIFT) & PCCRX_COAL_PKT_MASK;
921 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc, JME_PCCRX0, reg);
922
923 /* Disable Timers */
924 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc, JME_TMCSR, 0);
925 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc, JME_TIMER1, 0);
926 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc, JME_TIMER2, 0);
927
928 /* Configure retry transmit period, retry limit value. */
929 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXTRHD,
930 ((TXTRHD_RT_PERIOD_DEFAULT << TXTRHD_RT_PERIOD_SHIFT) &
931 TXTRHD_RT_PERIOD_MASK) |
932 ((TXTRHD_RT_LIMIT_DEFAULT << TXTRHD_RT_LIMIT_SHIFT) &
933 TXTRHD_RT_LIMIT_SHIFT));
934
935 /* Disable RSS. */
936 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc,
937 JME_RSSC, RSSC_DIS_RSS);
938
939 /* Initialize the interrupt mask. */
940 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc,
941 JME_INTR_MASK_SET, JME_INTRS_ENABLE);
942 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc,
943 JME_INTR_STATUS, 0xFFFFFFFF);
944
945 /* set media, if not already handling a media change */
946 if (do_ifinit) {
947 int error;
948 if ((error = mii_mediachg(&sc->jme_mii)) == ENXIO)
949 error = 0;
950 else if (error != 0) {
951 aprint_error_dev(sc->jme_dev, "could not set media\n");
952 splx(s);
953 return error;
954 }
955 }
956
957 /* Program MAC with resolved speed/duplex/flow-control. */
958 jme_mac_config(sc);
959
960 /* Start receiver/transmitter. */
961 sc->jme_rx_cons = 0;
962 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXCSR,
963 sc->jme_rxcsr | RXCSR_RX_ENB | RXCSR_RXQ_START);
964 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXCSR,
965 sc->jme_txcsr | TXCSR_TX_ENB);
966
967 /* start ticks calls */
968 callout_reset(&sc->jme_tick_ch, hz, jme_ticks, sc);
969 sc->jme_if.if_flags |= IFF_RUNNING;
970 sc->jme_if.if_flags &= ~IFF_OACTIVE;
971 splx(s);
972 return 0;
973 }
974
975
976 int
jme_mii_read(device_t self,int phy,int reg)977 jme_mii_read(device_t self, int phy, int reg)
978 {
979 struct jme_softc *sc = device_private(self);
980 int val, i;
981
982 /* For FPGA version, PHY address 0 should be ignored. */
983 if ((sc->jme_flags & JME_FLAG_FPGA) != 0) {
984 if (phy == 0)
985 return (0);
986 } else {
987 if (sc->jme_phyaddr != phy)
988 return (0);
989 }
990
991 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_SMI,
992 SMI_OP_READ | SMI_OP_EXECUTE |
993 SMI_PHY_ADDR(phy) | SMI_REG_ADDR(reg));
994 for (i = JME_PHY_TIMEOUT / 10; i > 0; i--) {
995 delay(10);
996 if (((val = bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac,
997 JME_SMI)) & SMI_OP_EXECUTE) == 0)
998 break;
999 }
1000
1001 if (i == 0) {
1002 aprint_error_dev(sc->jme_dev, "phy read timeout : %d\n", reg);
1003 return (0);
1004 }
1005
1006 return ((val & SMI_DATA_MASK) >> SMI_DATA_SHIFT);
1007 }
1008
1009 void
jme_mii_write(device_t self,int phy,int reg,int val)1010 jme_mii_write(device_t self, int phy, int reg, int val)
1011 {
1012 struct jme_softc *sc = device_private(self);
1013 int i;
1014
1015 /* For FPGA version, PHY address 0 should be ignored. */
1016 if ((sc->jme_flags & JME_FLAG_FPGA) != 0) {
1017 if (phy == 0)
1018 return;
1019 } else {
1020 if (sc->jme_phyaddr != phy)
1021 return;
1022 }
1023
1024 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_SMI,
1025 SMI_OP_WRITE | SMI_OP_EXECUTE |
1026 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
1027 SMI_PHY_ADDR(phy) | SMI_REG_ADDR(reg));
1028 for (i = JME_PHY_TIMEOUT / 10; i > 0; i--) {
1029 delay(10);
1030 if (((val = bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac,
1031 JME_SMI)) & SMI_OP_EXECUTE) == 0)
1032 break;
1033 }
1034
1035 if (i == 0)
1036 aprint_error_dev(sc->jme_dev, "phy write timeout : %d\n", reg);
1037
1038 return;
1039 }
1040
1041 void
jme_statchg(struct ifnet * ifp)1042 jme_statchg(struct ifnet *ifp)
1043 {
1044 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) == (IFF_UP|IFF_RUNNING))
1045 jme_init(ifp, 0);
1046 }
1047
1048 static void
jme_intr_rx(jme_softc_t * sc)1049 jme_intr_rx(jme_softc_t *sc) {
1050 struct mbuf *m, *mhead;
1051 bus_dmamap_t mmap;
1052 struct ifnet *ifp = &sc->jme_if;
1053 uint32_t flags, buflen;
1054 int i, ipackets, nsegs, seg, error;
1055 struct jme_desc *desc;
1056
1057 bus_dmamap_sync(sc->jme_dmatag, sc->jme_rxmap, 0,
1058 sizeof(struct jme_desc) * JME_NBUFS,
1059 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
1060 #ifdef JMEDEBUG_RX
1061 printf("rxintr sc->jme_rx_cons %d flags 0x%x\n",
1062 sc->jme_rx_cons, le32toh(sc->jme_rxring[sc->jme_rx_cons].flags));
1063 #endif
1064 ipackets = 0;
1065 while((le32toh(sc->jme_rxring[sc->jme_rx_cons].flags) & JME_RD_OWN)
1066 == 0) {
1067 i = sc->jme_rx_cons;
1068 desc = &sc->jme_rxring[i];
1069 #ifdef JMEDEBUG_RX
1070 printf("rxintr i %d flags 0x%x buflen 0x%x\n",
1071 i, le32toh(desc->flags), le32toh(desc->buflen));
1072 #endif
1073 if (sc->jme_rxmbuf[i] == NULL) {
1074 if ((error = jme_add_rxbuf(sc, NULL)) != 0) {
1075 aprint_error_dev(sc->jme_dev,
1076 "can't add new mbuf to empty slot: %d\n",
1077 error);
1078 break;
1079 }
1080 JME_DESC_INC(sc->jme_rx_cons, JME_NBUFS);
1081 i = sc->jme_rx_cons;
1082 continue;
1083 }
1084 if ((le32toh(desc->buflen) & JME_RD_VALID) == 0)
1085 break;
1086
1087 buflen = le32toh(desc->buflen);
1088 nsegs = JME_RX_NSEGS(buflen);
1089 flags = le32toh(desc->flags);
1090 if ((buflen & JME_RX_ERR_STAT) != 0 ||
1091 JME_RX_BYTES(buflen) < sizeof(struct ether_header) ||
1092 JME_RX_BYTES(buflen) >
1093 (ifp->if_mtu + ETHER_HDR_LEN + JME_RX_PAD_BYTES)) {
1094 #ifdef JMEDEBUG_RX
1095 printf("rx error flags 0x%x buflen 0x%x\n",
1096 flags, buflen);
1097 #endif
1098 ifp->if_ierrors++;
1099 /* reuse the mbufs */
1100 for (seg = 0; seg < nsegs; seg++) {
1101 m = sc->jme_rxmbuf[i];
1102 sc->jme_rxmbuf[i] = NULL;
1103 mmap = sc->jme_rxmbufm[i];
1104 bus_dmamap_sync(sc->jme_dmatag, mmap, 0,
1105 mmap->dm_mapsize, BUS_DMASYNC_POSTREAD);
1106 bus_dmamap_unload(sc->jme_dmatag, mmap);
1107 if ((error = jme_add_rxbuf(sc, m)) != 0)
1108 aprint_error_dev(sc->jme_dev,
1109 "can't reuse mbuf: %d\n", error);
1110 JME_DESC_INC(sc->jme_rx_cons, JME_NBUFS);
1111 i = sc->jme_rx_cons;
1112 }
1113 continue;
1114 }
1115 /* receive this packet */
1116 mhead = m = sc->jme_rxmbuf[i];
1117 sc->jme_rxmbuf[i] = NULL;
1118 mmap = sc->jme_rxmbufm[i];
1119 bus_dmamap_sync(sc->jme_dmatag, mmap, 0,
1120 mmap->dm_mapsize, BUS_DMASYNC_POSTREAD);
1121 bus_dmamap_unload(sc->jme_dmatag, mmap);
1122 /* add a new buffer to chain */
1123 if (jme_add_rxbuf(sc, NULL) != 0) {
1124 if ((error = jme_add_rxbuf(sc, m)) != 0)
1125 aprint_error_dev(sc->jme_dev,
1126 "can't reuse mbuf: %d\n", error);
1127 JME_DESC_INC(sc->jme_rx_cons, JME_NBUFS);
1128 i = sc->jme_rx_cons;
1129 for (seg = 1; seg < nsegs; seg++) {
1130 m = sc->jme_rxmbuf[i];
1131 sc->jme_rxmbuf[i] = NULL;
1132 mmap = sc->jme_rxmbufm[i];
1133 bus_dmamap_sync(sc->jme_dmatag, mmap, 0,
1134 mmap->dm_mapsize, BUS_DMASYNC_POSTREAD);
1135 bus_dmamap_unload(sc->jme_dmatag, mmap);
1136 if ((error = jme_add_rxbuf(sc, m)) != 0)
1137 aprint_error_dev(sc->jme_dev,
1138 "can't reuse mbuf: %d\n", error);
1139 JME_DESC_INC(sc->jme_rx_cons, JME_NBUFS);
1140 i = sc->jme_rx_cons;
1141 }
1142 ifp->if_ierrors++;
1143 continue;
1144 }
1145
1146 /* build mbuf chain: head, then remaining segments */
1147 m_set_rcvif(m, ifp);
1148 m->m_pkthdr.len = JME_RX_BYTES(buflen) - JME_RX_PAD_BYTES;
1149 m->m_len = (nsegs > 1) ? (MCLBYTES - JME_RX_PAD_BYTES) :
1150 m->m_pkthdr.len;
1151 m->m_data = m->m_ext.ext_buf + JME_RX_PAD_BYTES;
1152 JME_DESC_INC(sc->jme_rx_cons, JME_NBUFS);
1153 for (seg = 1; seg < nsegs; seg++) {
1154 i = sc->jme_rx_cons;
1155 m = sc->jme_rxmbuf[i];
1156 sc->jme_rxmbuf[i] = NULL;
1157 mmap = sc->jme_rxmbufm[i];
1158 bus_dmamap_sync(sc->jme_dmatag, mmap, 0,
1159 mmap->dm_mapsize, BUS_DMASYNC_POSTREAD);
1160 bus_dmamap_unload(sc->jme_dmatag, mmap);
1161 if ((error = jme_add_rxbuf(sc, NULL)) != 0)
1162 aprint_error_dev(sc->jme_dev,
1163 "can't add new mbuf: %d\n", error);
1164 m->m_flags &= ~M_PKTHDR;
1165 m_cat(mhead, m);
1166 JME_DESC_INC(sc->jme_rx_cons, JME_NBUFS);
1167 }
1168 /* and adjust last mbuf's size */
1169 if (nsegs > 1) {
1170 m->m_len =
1171 JME_RX_BYTES(buflen) - (MCLBYTES * (nsegs - 1));
1172 }
1173 ifp->if_ipackets++;
1174 ipackets++;
1175 bpf_mtap(ifp, mhead);
1176
1177 if ((ifp->if_capenable & IFCAP_CSUM_IPv4_Rx) &&
1178 (flags & JME_RD_IPV4)) {
1179 mhead->m_pkthdr.csum_flags |= M_CSUM_IPv4;
1180 if (!(flags & JME_RD_IPCSUM))
1181 mhead->m_pkthdr.csum_flags |= M_CSUM_IPv4_BAD;
1182 }
1183 if ((ifp->if_capenable & IFCAP_CSUM_TCPv4_Rx) &&
1184 (flags & JME_RD_TCPV4) == JME_RD_TCPV4) {
1185 mhead->m_pkthdr.csum_flags |= M_CSUM_TCPv4;
1186 if (!(flags & JME_RD_TCPCSUM))
1187 mhead->m_pkthdr.csum_flags |=
1188 M_CSUM_TCP_UDP_BAD;
1189 }
1190 if ((ifp->if_capenable & IFCAP_CSUM_UDPv4_Rx) &&
1191 (flags & JME_RD_UDPV4) == JME_RD_UDPV4) {
1192 mhead->m_pkthdr.csum_flags |= M_CSUM_UDPv4;
1193 if (!(flags & JME_RD_UDPCSUM))
1194 mhead->m_pkthdr.csum_flags |=
1195 M_CSUM_TCP_UDP_BAD;
1196 }
1197 if ((ifp->if_capenable & IFCAP_CSUM_TCPv6_Rx) &&
1198 (flags & JME_RD_TCPV6) == JME_RD_TCPV6) {
1199 mhead->m_pkthdr.csum_flags |= M_CSUM_TCPv6;
1200 if (!(flags & JME_RD_TCPCSUM))
1201 mhead->m_pkthdr.csum_flags |=
1202 M_CSUM_TCP_UDP_BAD;
1203 }
1204 if ((ifp->if_capenable & IFCAP_CSUM_UDPv6_Rx) &&
1205 (flags & JME_RD_UDPV6) == JME_RD_UDPV6) {
1206 m->m_pkthdr.csum_flags |= M_CSUM_UDPv6;
1207 if (!(flags & JME_RD_UDPCSUM))
1208 mhead->m_pkthdr.csum_flags |=
1209 M_CSUM_TCP_UDP_BAD;
1210 }
1211 if (flags & JME_RD_VLAN_TAG) {
1212 /* pass to vlan_input() */
1213 VLAN_INPUT_TAG(ifp, mhead,
1214 (flags & JME_RD_VLAN_MASK), continue);
1215 }
1216 if_percpuq_enqueue(ifp->if_percpuq, mhead);
1217 }
1218 if (ipackets)
1219 rnd_add_uint32(&sc->rnd_source, ipackets);
1220 }
1221
1222 static int
jme_intr(void * v)1223 jme_intr(void *v)
1224 {
1225 jme_softc_t *sc = v;
1226 uint32_t istatus;
1227
1228 istatus = bus_space_read_4(sc->jme_bt_misc, sc->jme_bh_misc,
1229 JME_INTR_STATUS);
1230 if (istatus == 0 || istatus == 0xFFFFFFFF)
1231 return 0;
1232 /* Disable interrupts. */
1233 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc,
1234 JME_INTR_MASK_CLR, 0xFFFFFFFF);
1235 again:
1236 /* and update istatus */
1237 istatus = bus_space_read_4(sc->jme_bt_misc, sc->jme_bh_misc,
1238 JME_INTR_STATUS);
1239 if ((istatus & JME_INTRS_CHECK) == 0)
1240 goto done;
1241 /* Reset PCC counter/timer and Ack interrupts. */
1242 if ((istatus & (INTR_TXQ_COMP | INTR_TXQ_COAL | INTR_TXQ_COAL_TO)) != 0)
1243 istatus |= INTR_TXQ_COAL | INTR_TXQ_COAL_TO | INTR_TXQ_COMP;
1244 if ((istatus & (INTR_RXQ_COMP | INTR_RXQ_COAL | INTR_RXQ_COAL_TO)) != 0)
1245 istatus |= INTR_RXQ_COAL | INTR_RXQ_COAL_TO | INTR_RXQ_COMP;
1246 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc,
1247 JME_INTR_STATUS, istatus);
1248
1249 if ((sc->jme_if.if_flags & IFF_RUNNING) == 0)
1250 goto done;
1251 #ifdef JMEDEBUG_RX
1252 printf("jme_intr 0x%x RXCS 0x%x RXDBA 0x%x 0x%x RXQDC 0x%x RXNDA 0x%x RXMCS 0x%x\n", istatus,
1253 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXCSR),
1254 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXDBA_LO),
1255 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXDBA_HI),
1256 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXQDC),
1257 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXNDA),
1258 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXMAC));
1259 printf("jme_intr RXUMA 0x%x 0x%x RXMCHT 0x%x 0x%x GHC 0x%x\n",
1260 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_PAR0),
1261 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_PAR1),
1262 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_MAR0),
1263 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_MAR1),
1264 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_GHC));
1265 #endif
1266 if ((istatus & (INTR_RXQ_COMP | INTR_RXQ_COAL | INTR_RXQ_COAL_TO)) != 0)
1267 jme_intr_rx(sc);
1268 if ((istatus & INTR_RXQ_DESC_EMPTY) != 0) {
1269 /*
1270 * Notify hardware availability of new Rx
1271 * buffers.
1272 * Reading RXCSR takes very long time under
1273 * heavy load so cache RXCSR value and writes
1274 * the ORed value with the kick command to
1275 * the RXCSR. This saves one register access
1276 * cycle.
1277 */
1278 sc->jme_rx_cons = 0;
1279 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac,
1280 JME_RXCSR,
1281 sc->jme_rxcsr | RXCSR_RX_ENB | RXCSR_RXQ_START);
1282 }
1283 if ((istatus & (INTR_TXQ_COMP | INTR_TXQ_COAL | INTR_TXQ_COAL_TO)) != 0)
1284 jme_ifstart(&sc->jme_if);
1285
1286 goto again;
1287
1288 done:
1289 /* enable interrupts. */
1290 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc,
1291 JME_INTR_MASK_SET, JME_INTRS_ENABLE);
1292 return 1;
1293 }
1294
1295
1296 static int
jme_ifioctl(struct ifnet * ifp,unsigned long cmd,void * data)1297 jme_ifioctl(struct ifnet *ifp, unsigned long cmd, void *data)
1298 {
1299 struct jme_softc *sc = ifp->if_softc;
1300 int s, error;
1301 struct ifreq *ifr;
1302 struct ifcapreq *ifcr;
1303
1304 s = splnet();
1305 /*
1306 * we can't support at the same time jumbo frames and
1307 * TX checksums offload/TSO
1308 */
1309 switch(cmd) {
1310 case SIOCSIFMTU:
1311 ifr = data;
1312 if (ifr->ifr_mtu > JME_TX_FIFO_SIZE &&
1313 (ifp->if_capenable & (
1314 IFCAP_CSUM_IPv4_Tx|IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_UDPv4_Tx|
1315 IFCAP_CSUM_TCPv6_Tx|IFCAP_CSUM_UDPv6_Tx|
1316 IFCAP_TSOv4|IFCAP_TSOv6)) != 0) {
1317 splx(s);
1318 return EINVAL;
1319 }
1320 break;
1321 case SIOCSIFCAP:
1322 ifcr = data;
1323 if (ifp->if_mtu > JME_TX_FIFO_SIZE &&
1324 (ifcr->ifcr_capenable & (
1325 IFCAP_CSUM_IPv4_Tx|IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_UDPv4_Tx|
1326 IFCAP_CSUM_TCPv6_Tx|IFCAP_CSUM_UDPv6_Tx|
1327 IFCAP_TSOv4|IFCAP_TSOv6)) != 0) {
1328 splx(s);
1329 return EINVAL;
1330 }
1331 break;
1332 }
1333
1334 error = ether_ioctl(ifp, cmd, data);
1335 if (error == ENETRESET && (ifp->if_flags & IFF_RUNNING)) {
1336 if (cmd == SIOCADDMULTI || cmd == SIOCDELMULTI) {
1337 jme_set_filter(sc);
1338 error = 0;
1339 } else {
1340 error = jme_init(ifp, 0);
1341 }
1342 }
1343 splx(s);
1344 return error;
1345 }
1346
1347 static int
jme_encap(struct jme_softc * sc,struct mbuf ** m_head)1348 jme_encap(struct jme_softc *sc, struct mbuf **m_head)
1349 {
1350 struct jme_desc *desc;
1351 struct mbuf *m;
1352 struct m_tag *mtag;
1353 int error, i, prod, headdsc, nsegs;
1354 uint32_t cflags, tso_segsz;
1355
1356 if (((*m_head)->m_pkthdr.csum_flags & (M_CSUM_TSOv4|M_CSUM_TSOv6)) != 0){
1357 /*
1358 * Due to the adherence to NDIS specification JMC250
1359 * assumes upper stack computed TCP pseudo checksum
1360 * without including payload length. This breaks
1361 * checksum offload for TSO case so recompute TCP
1362 * pseudo checksum for JMC250. Hopefully this wouldn't
1363 * be much burden on modern CPUs.
1364 */
1365 bool v4 = ((*m_head)->m_pkthdr.csum_flags & M_CSUM_TSOv4) != 0;
1366 int iphl = v4 ?
1367 M_CSUM_DATA_IPv4_IPHL((*m_head)->m_pkthdr.csum_data) :
1368 M_CSUM_DATA_IPv6_HL((*m_head)->m_pkthdr.csum_data);
1369 /*
1370 * note: we support vlan offloading, so we should never have
1371 * a ETHERTYPE_VLAN packet here - so ETHER_HDR_LEN is always
1372 * right.
1373 */
1374 int hlen = ETHER_HDR_LEN + iphl;
1375
1376 if (__predict_false((*m_head)->m_len <
1377 (hlen + sizeof(struct tcphdr)))) {
1378 /*
1379 * TCP/IP headers are not in the first mbuf; we need
1380 * to do this the slow and painful way. Let's just
1381 * hope this doesn't happen very often.
1382 */
1383 struct tcphdr th;
1384
1385 m_copydata((*m_head), hlen, sizeof(th), &th);
1386 if (v4) {
1387 struct ip ip;
1388
1389 m_copydata((*m_head), ETHER_HDR_LEN,
1390 sizeof(ip), &ip);
1391 ip.ip_len = 0;
1392 m_copyback((*m_head),
1393 ETHER_HDR_LEN + offsetof(struct ip, ip_len),
1394 sizeof(ip.ip_len), &ip.ip_len);
1395 th.th_sum = in_cksum_phdr(ip.ip_src.s_addr,
1396 ip.ip_dst.s_addr, htons(IPPROTO_TCP));
1397 } else {
1398 #if INET6
1399 struct ip6_hdr ip6;
1400
1401 m_copydata((*m_head), ETHER_HDR_LEN,
1402 sizeof(ip6), &ip6);
1403 ip6.ip6_plen = 0;
1404 m_copyback((*m_head), ETHER_HDR_LEN +
1405 offsetof(struct ip6_hdr, ip6_plen),
1406 sizeof(ip6.ip6_plen), &ip6.ip6_plen);
1407 th.th_sum = in6_cksum_phdr(&ip6.ip6_src,
1408 &ip6.ip6_dst, 0, htonl(IPPROTO_TCP));
1409 #endif /* INET6 */
1410 }
1411 m_copyback((*m_head),
1412 hlen + offsetof(struct tcphdr, th_sum),
1413 sizeof(th.th_sum), &th.th_sum);
1414
1415 hlen += th.th_off << 2;
1416 } else {
1417 /*
1418 * TCP/IP headers are in the first mbuf; we can do
1419 * this the easy way.
1420 */
1421 struct tcphdr *th;
1422
1423 if (v4) {
1424 struct ip *ip =
1425 (void *)(mtod((*m_head), char *) +
1426 ETHER_HDR_LEN);
1427 th = (void *)(mtod((*m_head), char *) + hlen);
1428
1429 ip->ip_len = 0;
1430 th->th_sum = in_cksum_phdr(ip->ip_src.s_addr,
1431 ip->ip_dst.s_addr, htons(IPPROTO_TCP));
1432 } else {
1433 #if INET6
1434 struct ip6_hdr *ip6 =
1435 (void *)(mtod((*m_head), char *) +
1436 ETHER_HDR_LEN);
1437 th = (void *)(mtod((*m_head), char *) + hlen);
1438
1439 ip6->ip6_plen = 0;
1440 th->th_sum = in6_cksum_phdr(&ip6->ip6_src,
1441 &ip6->ip6_dst, 0, htonl(IPPROTO_TCP));
1442 #endif /* INET6 */
1443 }
1444 hlen += th->th_off << 2;
1445 }
1446
1447 }
1448
1449 prod = sc->jme_tx_prod;
1450
1451 error = bus_dmamap_load_mbuf(sc->jme_dmatag, sc->jme_txmbufm[prod],
1452 *m_head, BUS_DMA_NOWAIT | BUS_DMA_WRITE);
1453 if (error) {
1454 if (error == EFBIG) {
1455 log(LOG_ERR, "%s: Tx packet consumes too many "
1456 "DMA segments, dropping...\n",
1457 device_xname(sc->jme_dev));
1458 m_freem(*m_head);
1459 m_head = NULL;
1460 }
1461 return (error);
1462 }
1463 /*
1464 * Check descriptor overrun. Leave one free descriptor.
1465 * Since we always use 64bit address mode for transmitting,
1466 * each Tx request requires one more dummy descriptor.
1467 */
1468 nsegs = sc->jme_txmbufm[prod]->dm_nsegs;
1469 #ifdef JMEDEBUG_TX
1470 printf("jme_encap prod %d nsegs %d jme_tx_cnt %d\n", prod, nsegs, sc->jme_tx_cnt);
1471 #endif
1472 if (sc->jme_tx_cnt + nsegs + 1 > JME_NBUFS - 1) {
1473 bus_dmamap_unload(sc->jme_dmatag, sc->jme_txmbufm[prod]);
1474 return (ENOBUFS);
1475 }
1476 bus_dmamap_sync(sc->jme_dmatag, sc->jme_txmbufm[prod],
1477 0, sc->jme_txmbufm[prod]->dm_mapsize, BUS_DMASYNC_PREWRITE);
1478
1479 m = *m_head;
1480 cflags = 0;
1481 tso_segsz = 0;
1482 /* Configure checksum offload and TSO. */
1483 if ((m->m_pkthdr.csum_flags & (M_CSUM_TSOv4|M_CSUM_TSOv6)) != 0) {
1484 tso_segsz = (uint32_t)m->m_pkthdr.segsz << JME_TD_MSS_SHIFT;
1485 cflags |= JME_TD_TSO;
1486 } else {
1487 if ((m->m_pkthdr.csum_flags & M_CSUM_IPv4) != 0)
1488 cflags |= JME_TD_IPCSUM;
1489 if ((m->m_pkthdr.csum_flags & (M_CSUM_TCPv4|M_CSUM_TCPv6)) != 0)
1490 cflags |= JME_TD_TCPCSUM;
1491 if ((m->m_pkthdr.csum_flags & (M_CSUM_UDPv4|M_CSUM_UDPv6)) != 0)
1492 cflags |= JME_TD_UDPCSUM;
1493 }
1494 /* Configure VLAN. */
1495 if ((mtag = VLAN_OUTPUT_TAG(&sc->jme_ec, m)) != NULL) {
1496 cflags |= (VLAN_TAG_VALUE(mtag) & JME_TD_VLAN_MASK);
1497 cflags |= JME_TD_VLAN_TAG;
1498 }
1499
1500 desc = &sc->jme_txring[prod];
1501 desc->flags = htole32(cflags);
1502 desc->buflen = htole32(tso_segsz);
1503 desc->addr_hi = htole32(m->m_pkthdr.len);
1504 desc->addr_lo = 0;
1505 headdsc = prod;
1506 sc->jme_tx_cnt++;
1507 JME_DESC_INC(prod, JME_NBUFS);
1508 for (i = 0; i < nsegs; i++) {
1509 desc = &sc->jme_txring[prod];
1510 desc->flags = htole32(JME_TD_OWN | JME_TD_64BIT);
1511 desc->buflen =
1512 htole32(sc->jme_txmbufm[headdsc]->dm_segs[i].ds_len);
1513 desc->addr_hi = htole32(
1514 JME_ADDR_HI(sc->jme_txmbufm[headdsc]->dm_segs[i].ds_addr));
1515 desc->addr_lo = htole32(
1516 JME_ADDR_LO(sc->jme_txmbufm[headdsc]->dm_segs[i].ds_addr));
1517 bus_dmamap_sync(sc->jme_dmatag, sc->jme_txmap,
1518 prod * sizeof(struct jme_desc), sizeof(struct jme_desc),
1519 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1520 sc->jme_txmbuf[prod] = NULL;
1521 sc->jme_tx_cnt++;
1522 JME_DESC_INC(prod, JME_NBUFS);
1523 }
1524
1525 /* Update producer index. */
1526 sc->jme_tx_prod = prod;
1527 #ifdef JMEDEBUG_TX
1528 printf("jme_encap prod now %d\n", sc->jme_tx_prod);
1529 #endif
1530 /*
1531 * Finally request interrupt and give the first descriptor
1532 * owenership to hardware.
1533 */
1534 desc = &sc->jme_txring[headdsc];
1535 desc->flags |= htole32(JME_TD_OWN | JME_TD_INTR);
1536 bus_dmamap_sync(sc->jme_dmatag, sc->jme_txmap,
1537 headdsc * sizeof(struct jme_desc), sizeof(struct jme_desc),
1538 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
1539
1540 sc->jme_txmbuf[headdsc] = m;
1541 return (0);
1542 }
1543
1544 static void
jme_txeof(struct jme_softc * sc)1545 jme_txeof(struct jme_softc *sc)
1546 {
1547 struct ifnet *ifp;
1548 struct jme_desc *desc;
1549 uint32_t status;
1550 int cons, cons0, nsegs, seg;
1551
1552 ifp = &sc->jme_if;
1553
1554 #ifdef JMEDEBUG_TX
1555 printf("jme_txeof cons %d prod %d\n",
1556 sc->jme_tx_cons, sc->jme_tx_prod);
1557 printf("jme_txeof JME_TXCSR 0x%x JME_TXDBA_LO 0x%x JME_TXDBA_HI 0x%x "
1558 "JME_TXQDC 0x%x JME_TXNDA 0x%x JME_TXMAC 0x%x JME_TXPFC 0x%x "
1559 "JME_TXTRHD 0x%x\n",
1560 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXCSR),
1561 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXDBA_LO),
1562 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXDBA_HI),
1563 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXQDC),
1564 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXNDA),
1565 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXMAC),
1566 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXPFC),
1567 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXTRHD));
1568 for (cons = sc->jme_tx_cons; cons != sc->jme_tx_prod; ) {
1569 desc = &sc->jme_txring[cons];
1570 printf("ring[%d] 0x%x 0x%x 0x%x 0x%x\n", cons,
1571 desc->flags, desc->buflen, desc->addr_hi, desc->addr_lo);
1572 JME_DESC_INC(cons, JME_NBUFS);
1573 }
1574 #endif
1575
1576 cons = sc->jme_tx_cons;
1577 if (cons == sc->jme_tx_prod)
1578 return;
1579
1580 /*
1581 * Go through our Tx list and free mbufs for those
1582 * frames which have been transmitted.
1583 */
1584 for (; cons != sc->jme_tx_prod;) {
1585 bus_dmamap_sync(sc->jme_dmatag, sc->jme_txmap,
1586 cons * sizeof(struct jme_desc), sizeof(struct jme_desc),
1587 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
1588
1589 desc = &sc->jme_txring[cons];
1590 status = le32toh(desc->flags);
1591 #ifdef JMEDEBUG_TX
1592 printf("jme_txeof %i status 0x%x nsegs %d\n", cons, status,
1593 sc->jme_txmbufm[cons]->dm_nsegs);
1594 #endif
1595 if (status & JME_TD_OWN)
1596 break;
1597
1598 if ((status & (JME_TD_TMOUT | JME_TD_RETRY_EXP)) != 0)
1599 ifp->if_oerrors++;
1600 else {
1601 ifp->if_opackets++;
1602 if ((status & JME_TD_COLLISION) != 0)
1603 ifp->if_collisions +=
1604 le32toh(desc->buflen) &
1605 JME_TD_BUF_LEN_MASK;
1606 }
1607 /*
1608 * Only the first descriptor of multi-descriptor
1609 * transmission is updated so driver have to skip entire
1610 * chained buffers for the transmiited frame. In other
1611 * words, JME_TD_OWN bit is valid only at the first
1612 * descriptor of a multi-descriptor transmission.
1613 */
1614 nsegs = sc->jme_txmbufm[cons]->dm_nsegs;
1615 cons0 = cons;
1616 JME_DESC_INC(cons, JME_NBUFS);
1617 for (seg = 1; seg < nsegs + 1; seg++) {
1618 bus_dmamap_sync(sc->jme_dmatag, sc->jme_txmap,
1619 cons * sizeof(struct jme_desc),
1620 sizeof(struct jme_desc),
1621 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
1622 sc->jme_txring[cons].flags = 0;
1623 JME_DESC_INC(cons, JME_NBUFS);
1624 }
1625 /* Reclaim transferred mbufs. */
1626 bus_dmamap_sync(sc->jme_dmatag, sc->jme_txmbufm[cons0],
1627 0, sc->jme_txmbufm[cons0]->dm_mapsize,
1628 BUS_DMASYNC_POSTWRITE);
1629 bus_dmamap_unload(sc->jme_dmatag, sc->jme_txmbufm[cons0]);
1630
1631 KASSERT(sc->jme_txmbuf[cons0] != NULL);
1632 m_freem(sc->jme_txmbuf[cons0]);
1633 sc->jme_txmbuf[cons0] = NULL;
1634 sc->jme_tx_cnt -= nsegs + 1;
1635 KASSERT(sc->jme_tx_cnt >= 0);
1636 sc->jme_if.if_flags &= ~IFF_OACTIVE;
1637 }
1638 sc->jme_tx_cons = cons;
1639 /* Unarm watchog timer when there is no pending descriptors in queue. */
1640 if (sc->jme_tx_cnt == 0)
1641 ifp->if_timer = 0;
1642 #ifdef JMEDEBUG_TX
1643 printf("jme_txeof jme_tx_cnt %d\n", sc->jme_tx_cnt);
1644 #endif
1645 }
1646
1647 static void
jme_ifstart(struct ifnet * ifp)1648 jme_ifstart(struct ifnet *ifp)
1649 {
1650 jme_softc_t *sc = ifp->if_softc;
1651 struct mbuf *mb_head;
1652 int enq;
1653
1654 /*
1655 * check if we can free some desc.
1656 * Clear TX interrupt status to reset TX coalescing counters.
1657 */
1658 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc,
1659 JME_INTR_STATUS, INTR_TXQ_COMP);
1660 jme_txeof(sc);
1661
1662 if ((sc->jme_if.if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING)
1663 return;
1664 for (enq = 0;; enq++) {
1665 nexttx:
1666 /* Grab a paquet for output */
1667 IFQ_DEQUEUE(&ifp->if_snd, mb_head);
1668 if (mb_head == NULL) {
1669 #ifdef JMEDEBUG_TX
1670 printf("%s: nothing to send\n", __func__);
1671 #endif
1672 break;
1673 }
1674 /* try to add this mbuf to the TX ring */
1675 if (jme_encap(sc, &mb_head)) {
1676 if (mb_head == NULL) {
1677 ifp->if_oerrors++;
1678 /* packet dropped, try next one */
1679 goto nexttx;
1680 }
1681 /* resource shortage, try again later */
1682 IF_PREPEND(&ifp->if_snd, mb_head);
1683 ifp->if_flags |= IFF_OACTIVE;
1684 break;
1685 }
1686 /* Pass packet to bpf if there is a listener */
1687 bpf_mtap(ifp, mb_head);
1688 }
1689 #ifdef JMEDEBUG_TX
1690 printf("jme_ifstart enq %d\n", enq);
1691 #endif
1692 if (enq) {
1693 /*
1694 * Set a 5 second timer just in case we don't hear from
1695 * the card again.
1696 */
1697 ifp->if_timer = 5;
1698 /*
1699 * Reading TXCSR takes very long time under heavy load
1700 * so cache TXCSR value and writes the ORed value with
1701 * the kick command to the TXCSR. This saves one register
1702 * access cycle.
1703 */
1704 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXCSR,
1705 sc->jme_txcsr | TXCSR_TX_ENB | TXCSR_TXQ_N_START(TXCSR_TXQ0));
1706 #ifdef JMEDEBUG_TX
1707 printf("jme_ifstart JME_TXCSR 0x%x JME_TXDBA_LO 0x%x JME_TXDBA_HI 0x%x "
1708 "JME_TXQDC 0x%x JME_TXNDA 0x%x JME_TXMAC 0x%x JME_TXPFC 0x%x "
1709 "JME_TXTRHD 0x%x\n",
1710 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXCSR),
1711 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXDBA_LO),
1712 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXDBA_HI),
1713 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXQDC),
1714 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXNDA),
1715 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXMAC),
1716 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXPFC),
1717 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXTRHD));
1718 #endif
1719 }
1720 }
1721
1722 static void
jme_ifwatchdog(struct ifnet * ifp)1723 jme_ifwatchdog(struct ifnet *ifp)
1724 {
1725 jme_softc_t *sc = ifp->if_softc;
1726
1727 if ((ifp->if_flags & IFF_RUNNING) == 0)
1728 return;
1729 printf("%s: device timeout\n", device_xname(sc->jme_dev));
1730 ifp->if_oerrors++;
1731 jme_init(ifp, 0);
1732 }
1733
1734 static int
jme_mediachange(struct ifnet * ifp)1735 jme_mediachange(struct ifnet *ifp)
1736 {
1737 int error;
1738 jme_softc_t *sc = ifp->if_softc;
1739
1740 if ((error = mii_mediachg(&sc->jme_mii)) == ENXIO)
1741 error = 0;
1742 else if (error != 0) {
1743 aprint_error_dev(sc->jme_dev, "could not set media\n");
1744 return error;
1745 }
1746 return 0;
1747 }
1748
1749 static void
jme_ticks(void * v)1750 jme_ticks(void *v)
1751 {
1752 jme_softc_t *sc = v;
1753 int s = splnet();
1754
1755 /* Tick the MII. */
1756 mii_tick(&sc->jme_mii);
1757
1758 /* every seconds */
1759 callout_reset(&sc->jme_tick_ch, hz, jme_ticks, sc);
1760 splx(s);
1761 }
1762
1763 static void
jme_mac_config(jme_softc_t * sc)1764 jme_mac_config(jme_softc_t *sc)
1765 {
1766 uint32_t ghc, gpreg, rxmac, txmac, txpause;
1767 struct mii_data *mii = &sc->jme_mii;
1768
1769 ghc = 0;
1770 rxmac = bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXMAC);
1771 rxmac &= ~RXMAC_FC_ENB;
1772 txmac = bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXMAC);
1773 txmac &= ~(TXMAC_CARRIER_EXT | TXMAC_FRAME_BURST);
1774 txpause = bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXPFC);
1775 txpause &= ~TXPFC_PAUSE_ENB;
1776
1777 if (mii->mii_media_active & IFM_FDX) {
1778 ghc |= GHC_FULL_DUPLEX;
1779 rxmac &= ~RXMAC_COLL_DET_ENB;
1780 txmac &= ~(TXMAC_COLL_ENB | TXMAC_CARRIER_SENSE |
1781 TXMAC_BACKOFF | TXMAC_CARRIER_EXT |
1782 TXMAC_FRAME_BURST);
1783 /* Disable retry transmit timer/retry limit. */
1784 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXTRHD,
1785 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXTRHD)
1786 & ~(TXTRHD_RT_PERIOD_ENB | TXTRHD_RT_LIMIT_ENB));
1787 } else {
1788 rxmac |= RXMAC_COLL_DET_ENB;
1789 txmac |= TXMAC_COLL_ENB | TXMAC_CARRIER_SENSE | TXMAC_BACKOFF;
1790 /* Enable retry transmit timer/retry limit. */
1791 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXTRHD,
1792 bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXTRHD) | TXTRHD_RT_PERIOD_ENB | TXTRHD_RT_LIMIT_ENB);
1793 }
1794 /* Reprogram Tx/Rx MACs with resolved speed/duplex. */
1795 switch (IFM_SUBTYPE(mii->mii_media_active)) {
1796 case IFM_10_T:
1797 ghc |= GHC_SPEED_10 | GHC_CLKSRC_10_100;
1798 break;
1799 case IFM_100_TX:
1800 ghc |= GHC_SPEED_100 | GHC_CLKSRC_10_100;
1801 break;
1802 case IFM_1000_T:
1803 ghc |= GHC_SPEED_1000 | GHC_CLKSRC_1000;
1804 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) == 0)
1805 txmac |= TXMAC_CARRIER_EXT | TXMAC_FRAME_BURST;
1806 break;
1807 default:
1808 break;
1809 }
1810 if ((sc->jme_flags & JME_FLAG_GIGA) &&
1811 sc->jme_chip_rev == DEVICEREVID_JMC250_A2) {
1812 /*
1813 * Workaround occasional packet loss issue of JMC250 A2
1814 * when it runs on half-duplex media.
1815 */
1816 #ifdef JMEDEBUG
1817 printf("JME250 A2 workaround\n");
1818 #endif
1819 gpreg = bus_space_read_4(sc->jme_bt_misc, sc->jme_bh_misc,
1820 JME_GPREG1);
1821 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0)
1822 gpreg &= ~GPREG1_HDPX_FIX;
1823 else
1824 gpreg |= GPREG1_HDPX_FIX;
1825 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc,
1826 JME_GPREG1, gpreg);
1827 /* Workaround CRC errors at 100Mbps on JMC250 A2. */
1828 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX) {
1829 /* Extend interface FIFO depth. */
1830 jme_mii_write(sc->jme_dev, sc->jme_phyaddr,
1831 0x1B, 0x0000);
1832 } else {
1833 /* Select default interface FIFO depth. */
1834 jme_mii_write(sc->jme_dev, sc->jme_phyaddr,
1835 0x1B, 0x0004);
1836 }
1837 }
1838 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_GHC, ghc);
1839 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXMAC, rxmac);
1840 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXMAC, txmac);
1841 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_TXPFC, txpause);
1842 }
1843
1844 static void
jme_set_filter(jme_softc_t * sc)1845 jme_set_filter(jme_softc_t *sc)
1846 {
1847 struct ifnet *ifp = &sc->jme_if;
1848 struct ether_multistep step;
1849 struct ether_multi *enm;
1850 uint32_t hash[2] = {0, 0};
1851 int i;
1852 uint32_t rxcfg;
1853
1854 rxcfg = bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXMAC);
1855 rxcfg &= ~ (RXMAC_BROADCAST | RXMAC_PROMISC | RXMAC_MULTICAST |
1856 RXMAC_ALLMULTI);
1857 /* Always accept frames destined to our station address. */
1858 rxcfg |= RXMAC_UNICAST;
1859 if ((ifp->if_flags & IFF_BROADCAST) != 0)
1860 rxcfg |= RXMAC_BROADCAST;
1861 if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) {
1862 if ((ifp->if_flags & IFF_PROMISC) != 0)
1863 rxcfg |= RXMAC_PROMISC;
1864 if ((ifp->if_flags & IFF_ALLMULTI) != 0)
1865 rxcfg |= RXMAC_ALLMULTI;
1866 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac,
1867 JME_MAR0, 0xFFFFFFFF);
1868 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac,
1869 JME_MAR1, 0xFFFFFFFF);
1870 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac,
1871 JME_RXMAC, rxcfg);
1872 return;
1873 }
1874 /*
1875 * Set up the multicast address filter by passing all multicast
1876 * addresses through a CRC generator, and then using the low-order
1877 * 6 bits as an index into the 64 bit multicast hash table. The
1878 * high order bits select the register, while the rest of the bits
1879 * select the bit within the register.
1880 */
1881 rxcfg |= RXMAC_MULTICAST;
1882 memset(hash, 0, sizeof(hash));
1883
1884 ETHER_FIRST_MULTI(step, &sc->jme_ec, enm);
1885 while (enm != NULL) {
1886 #ifdef JEMDBUG
1887 printf("%s: addrs %s %s\n", __func__,
1888 ether_sprintf(enm->enm_addrlo),
1889 ether_sprintf(enm->enm_addrhi));
1890 #endif
1891 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 6) == 0) {
1892 i = ether_crc32_be(enm->enm_addrlo, 6);
1893 /* Just want the 6 least significant bits. */
1894 i &= 0x3f;
1895 hash[i / 32] |= 1 << (i%32);
1896 } else {
1897 hash[0] = hash[1] = 0xffffffff;
1898 sc->jme_if.if_flags |= IFF_ALLMULTI;
1899 break;
1900 }
1901 ETHER_NEXT_MULTI(step, enm);
1902 }
1903 #ifdef JMEDEBUG
1904 printf("%s: hash1 %x has2 %x\n", __func__, hash[0], hash[1]);
1905 #endif
1906 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_MAR0, hash[0]);
1907 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_MAR1, hash[1]);
1908 bus_space_write_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_RXMAC, rxcfg);
1909 }
1910
1911 #if 0
1912 static int
1913 jme_multicast_hash(uint8_t *a)
1914 {
1915 int hash;
1916
1917 #define DA(addr,bit) (addr[5 - (bit / 8)] & (1 << (bit % 8)))
1918 #define xor8(a,b,c,d,e,f,g,h) \
1919 (((a != 0) + (b != 0) + (c != 0) + (d != 0) + \
1920 (e != 0) + (f != 0) + (g != 0) + (h != 0)) & 1)
1921
1922 hash = xor8(DA(a,0), DA(a, 6), DA(a,12), DA(a,18), DA(a,24), DA(a,30),
1923 DA(a,36), DA(a,42));
1924 hash |= xor8(DA(a,1), DA(a, 7), DA(a,13), DA(a,19), DA(a,25), DA(a,31),
1925 DA(a,37), DA(a,43)) << 1;
1926 hash |= xor8(DA(a,2), DA(a, 8), DA(a,14), DA(a,20), DA(a,26), DA(a,32),
1927 DA(a,38), DA(a,44)) << 2;
1928 hash |= xor8(DA(a,3), DA(a, 9), DA(a,15), DA(a,21), DA(a,27), DA(a,33),
1929 DA(a,39), DA(a,45)) << 3;
1930 hash |= xor8(DA(a,4), DA(a,10), DA(a,16), DA(a,22), DA(a,28), DA(a,34),
1931 DA(a,40), DA(a,46)) << 4;
1932 hash |= xor8(DA(a,5), DA(a,11), DA(a,17), DA(a,23), DA(a,29), DA(a,35),
1933 DA(a,41), DA(a,47)) << 5;
1934
1935 return hash;
1936 }
1937 #endif
1938
1939 static int
jme_eeprom_read_byte(struct jme_softc * sc,uint8_t addr,uint8_t * val)1940 jme_eeprom_read_byte(struct jme_softc *sc, uint8_t addr, uint8_t *val)
1941 {
1942 uint32_t reg;
1943 int i;
1944
1945 *val = 0;
1946 for (i = JME_EEPROM_TIMEOUT / 10; i > 0; i--) {
1947 reg = bus_space_read_4(sc->jme_bt_phy, sc->jme_bh_phy,
1948 JME_SMBCSR);
1949 if ((reg & SMBCSR_HW_BUSY_MASK) == SMBCSR_HW_IDLE)
1950 break;
1951 delay(10);
1952 }
1953
1954 if (i == 0) {
1955 aprint_error_dev(sc->jme_dev, "EEPROM idle timeout!\n");
1956 return (ETIMEDOUT);
1957 }
1958
1959 reg = ((uint32_t)addr << SMBINTF_ADDR_SHIFT) & SMBINTF_ADDR_MASK;
1960 bus_space_write_4(sc->jme_bt_phy, sc->jme_bh_phy,
1961 JME_SMBINTF, reg | SMBINTF_RD | SMBINTF_CMD_TRIGGER);
1962 for (i = JME_EEPROM_TIMEOUT / 10; i > 0; i--) {
1963 delay(10);
1964 reg = bus_space_read_4(sc->jme_bt_phy, sc->jme_bh_phy,
1965 JME_SMBINTF);
1966 if ((reg & SMBINTF_CMD_TRIGGER) == 0)
1967 break;
1968 }
1969
1970 if (i == 0) {
1971 aprint_error_dev(sc->jme_dev, "EEPROM read timeout!\n");
1972 return (ETIMEDOUT);
1973 }
1974
1975 reg = bus_space_read_4(sc->jme_bt_phy, sc->jme_bh_phy, JME_SMBINTF);
1976 *val = (reg & SMBINTF_RD_DATA_MASK) >> SMBINTF_RD_DATA_SHIFT;
1977 return (0);
1978 }
1979
1980
1981 static int
jme_eeprom_macaddr(struct jme_softc * sc)1982 jme_eeprom_macaddr(struct jme_softc *sc)
1983 {
1984 uint8_t eaddr[ETHER_ADDR_LEN];
1985 uint8_t fup, reg, val;
1986 uint32_t offset;
1987 int match;
1988
1989 offset = 0;
1990 if (jme_eeprom_read_byte(sc, offset++, &fup) != 0 ||
1991 fup != JME_EEPROM_SIG0)
1992 return (ENOENT);
1993 if (jme_eeprom_read_byte(sc, offset++, &fup) != 0 ||
1994 fup != JME_EEPROM_SIG1)
1995 return (ENOENT);
1996 match = 0;
1997 do {
1998 if (jme_eeprom_read_byte(sc, offset, &fup) != 0)
1999 break;
2000 if (JME_EEPROM_MKDESC(JME_EEPROM_FUNC0, JME_EEPROM_PAGE_BAR1)
2001 == (fup & (JME_EEPROM_FUNC_MASK|JME_EEPROM_PAGE_MASK))) {
2002 if (jme_eeprom_read_byte(sc, offset + 1, ®) != 0)
2003 break;
2004 if (reg >= JME_PAR0 &&
2005 reg < JME_PAR0 + ETHER_ADDR_LEN) {
2006 if (jme_eeprom_read_byte(sc, offset + 2,
2007 &val) != 0)
2008 break;
2009 eaddr[reg - JME_PAR0] = val;
2010 match++;
2011 }
2012 }
2013 if (fup & JME_EEPROM_DESC_END)
2014 break;
2015
2016 /* Try next eeprom descriptor. */
2017 offset += JME_EEPROM_DESC_BYTES;
2018 } while (match != ETHER_ADDR_LEN && offset < JME_EEPROM_END);
2019
2020 if (match == ETHER_ADDR_LEN) {
2021 memcpy(sc->jme_enaddr, eaddr, ETHER_ADDR_LEN);
2022 return (0);
2023 }
2024
2025 return (ENOENT);
2026 }
2027
2028 static int
jme_reg_macaddr(struct jme_softc * sc)2029 jme_reg_macaddr(struct jme_softc *sc)
2030 {
2031 uint32_t par0, par1;
2032
2033 par0 = bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_PAR0);
2034 par1 = bus_space_read_4(sc->jme_bt_mac, sc->jme_bh_mac, JME_PAR1);
2035 par1 &= 0xffff;
2036 if ((par0 == 0 && par1 == 0) ||
2037 (par0 == 0xffffffff && par1 == 0xffff)) {
2038 return (ENOENT);
2039 } else {
2040 sc->jme_enaddr[0] = (par0 >> 0) & 0xff;
2041 sc->jme_enaddr[1] = (par0 >> 8) & 0xff;
2042 sc->jme_enaddr[2] = (par0 >> 16) & 0xff;
2043 sc->jme_enaddr[3] = (par0 >> 24) & 0xff;
2044 sc->jme_enaddr[4] = (par1 >> 0) & 0xff;
2045 sc->jme_enaddr[5] = (par1 >> 8) & 0xff;
2046 }
2047 return (0);
2048 }
2049
2050 /*
2051 * Set up sysctl(3) MIB, hw.jme.* - Individual controllers will be
2052 * set up in jme_pci_attach()
2053 */
2054 SYSCTL_SETUP(sysctl_jme, "sysctl jme subtree setup")
2055 {
2056 int rc;
2057 const struct sysctlnode *node;
2058
2059 if ((rc = sysctl_createv(clog, 0, NULL, &node,
2060 0, CTLTYPE_NODE, "jme",
2061 SYSCTL_DESCR("jme interface controls"),
2062 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) {
2063 goto err;
2064 }
2065
2066 jme_root_num = node->sysctl_num;
2067 return;
2068
2069 err:
2070 aprint_error("%s: syctl_createv failed (rc = %d)\n", __func__, rc);
2071 }
2072
2073 static int
jme_sysctl_intrxto(SYSCTLFN_ARGS)2074 jme_sysctl_intrxto(SYSCTLFN_ARGS)
2075 {
2076 int error, t;
2077 struct sysctlnode node;
2078 struct jme_softc *sc;
2079 uint32_t reg;
2080
2081 node = *rnode;
2082 sc = node.sysctl_data;
2083 t = sc->jme_intrxto;
2084 node.sysctl_data = &t;
2085 error = sysctl_lookup(SYSCTLFN_CALL(&node));
2086 if (error || newp == NULL)
2087 return error;
2088
2089 if (t < PCCRX_COAL_TO_MIN || t > PCCRX_COAL_TO_MAX)
2090 return EINVAL;
2091
2092 /*
2093 * update the softc with sysctl-changed value, and mark
2094 * for hardware update
2095 */
2096 sc->jme_intrxto = t;
2097 /* Configure Rx queue 0 packet completion coalescing. */
2098 reg = (sc->jme_intrxto << PCCRX_COAL_TO_SHIFT) & PCCRX_COAL_TO_MASK;
2099 reg |= (sc->jme_intrxct << PCCRX_COAL_PKT_SHIFT) & PCCRX_COAL_PKT_MASK;
2100 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc, JME_PCCRX0, reg);
2101 return 0;
2102 }
2103
2104 static int
jme_sysctl_intrxct(SYSCTLFN_ARGS)2105 jme_sysctl_intrxct(SYSCTLFN_ARGS)
2106 {
2107 int error, t;
2108 struct sysctlnode node;
2109 struct jme_softc *sc;
2110 uint32_t reg;
2111
2112 node = *rnode;
2113 sc = node.sysctl_data;
2114 t = sc->jme_intrxct;
2115 node.sysctl_data = &t;
2116 error = sysctl_lookup(SYSCTLFN_CALL(&node));
2117 if (error || newp == NULL)
2118 return error;
2119
2120 if (t < PCCRX_COAL_PKT_MIN || t > PCCRX_COAL_PKT_MAX)
2121 return EINVAL;
2122
2123 /*
2124 * update the softc with sysctl-changed value, and mark
2125 * for hardware update
2126 */
2127 sc->jme_intrxct = t;
2128 /* Configure Rx queue 0 packet completion coalescing. */
2129 reg = (sc->jme_intrxto << PCCRX_COAL_TO_SHIFT) & PCCRX_COAL_TO_MASK;
2130 reg |= (sc->jme_intrxct << PCCRX_COAL_PKT_SHIFT) & PCCRX_COAL_PKT_MASK;
2131 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc, JME_PCCRX0, reg);
2132 return 0;
2133 }
2134
2135 static int
jme_sysctl_inttxto(SYSCTLFN_ARGS)2136 jme_sysctl_inttxto(SYSCTLFN_ARGS)
2137 {
2138 int error, t;
2139 struct sysctlnode node;
2140 struct jme_softc *sc;
2141 uint32_t reg;
2142
2143 node = *rnode;
2144 sc = node.sysctl_data;
2145 t = sc->jme_inttxto;
2146 node.sysctl_data = &t;
2147 error = sysctl_lookup(SYSCTLFN_CALL(&node));
2148 if (error || newp == NULL)
2149 return error;
2150
2151 if (t < PCCTX_COAL_TO_MIN || t > PCCTX_COAL_TO_MAX)
2152 return EINVAL;
2153
2154 /*
2155 * update the softc with sysctl-changed value, and mark
2156 * for hardware update
2157 */
2158 sc->jme_inttxto = t;
2159 /* Configure Tx queue 0 packet completion coalescing. */
2160 reg = (sc->jme_inttxto << PCCTX_COAL_TO_SHIFT) & PCCTX_COAL_TO_MASK;
2161 reg |= (sc->jme_inttxct << PCCTX_COAL_PKT_SHIFT) & PCCTX_COAL_PKT_MASK;
2162 reg |= PCCTX_COAL_TXQ0;
2163 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc, JME_PCCTX, reg);
2164 return 0;
2165 }
2166
2167 static int
jme_sysctl_inttxct(SYSCTLFN_ARGS)2168 jme_sysctl_inttxct(SYSCTLFN_ARGS)
2169 {
2170 int error, t;
2171 struct sysctlnode node;
2172 struct jme_softc *sc;
2173 uint32_t reg;
2174
2175 node = *rnode;
2176 sc = node.sysctl_data;
2177 t = sc->jme_inttxct;
2178 node.sysctl_data = &t;
2179 error = sysctl_lookup(SYSCTLFN_CALL(&node));
2180 if (error || newp == NULL)
2181 return error;
2182
2183 if (t < PCCTX_COAL_PKT_MIN || t > PCCTX_COAL_PKT_MAX)
2184 return EINVAL;
2185
2186 /*
2187 * update the softc with sysctl-changed value, and mark
2188 * for hardware update
2189 */
2190 sc->jme_inttxct = t;
2191 /* Configure Tx queue 0 packet completion coalescing. */
2192 reg = (sc->jme_inttxto << PCCTX_COAL_TO_SHIFT) & PCCTX_COAL_TO_MASK;
2193 reg |= (sc->jme_inttxct << PCCTX_COAL_PKT_SHIFT) & PCCTX_COAL_PKT_MASK;
2194 reg |= PCCTX_COAL_TXQ0;
2195 bus_space_write_4(sc->jme_bt_misc, sc->jme_bh_misc, JME_PCCTX, reg);
2196 return 0;
2197 }
2198