1 | /* $NetBSD: if_rtk_pci.c,v 1.46 2015/05/09 21:53:45 christos Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1997, 1998 |
5 | * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * 3. All advertising materials mentioning features or use of this software |
16 | * must display the following acknowledgement: |
17 | * This product includes software developed by Bill Paul. |
18 | * 4. Neither the name of the author nor the names of any co-contributors |
19 | * may be used to endorse or promote products derived from this software |
20 | * without specific prior written permission. |
21 | * |
22 | * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND |
23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
25 | * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD |
26 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
27 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
28 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
29 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
30 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
31 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
32 | * THE POSSIBILITY OF SUCH DAMAGE. |
33 | * |
34 | * FreeBSD Id: if_rl.c,v 1.17 1999/06/19 20:17:37 wpaul Exp |
35 | */ |
36 | |
37 | /* |
38 | * Realtek 8129/8139 PCI NIC driver |
39 | * |
40 | * Supports several extremely cheap PCI 10/100 adapters based on |
41 | * the Realtek chipset. Datasheets can be obtained from |
42 | * www.realtek.com.tw. |
43 | * |
44 | * Written by Bill Paul <wpaul@ctr.columbia.edu> |
45 | * Electrical Engineering Department |
46 | * Columbia University, New York City |
47 | */ |
48 | |
49 | #include <sys/cdefs.h> |
50 | __KERNEL_RCSID(0, "$NetBSD: if_rtk_pci.c,v 1.46 2015/05/09 21:53:45 christos Exp $" ); |
51 | |
52 | #include <sys/param.h> |
53 | #include <sys/systm.h> |
54 | #include <sys/callout.h> |
55 | #include <sys/device.h> |
56 | #include <sys/sockio.h> |
57 | #include <sys/mbuf.h> |
58 | #include <sys/malloc.h> |
59 | #include <sys/kernel.h> |
60 | #include <sys/socket.h> |
61 | |
62 | #include <net/if.h> |
63 | #include <net/if_arp.h> |
64 | #include <net/if_ether.h> |
65 | #include <net/if_dl.h> |
66 | #include <net/if_media.h> |
67 | |
68 | #include <sys/bus.h> |
69 | |
70 | #include <dev/pci/pcireg.h> |
71 | #include <dev/pci/pcivar.h> |
72 | #include <dev/pci/pcidevs.h> |
73 | |
74 | #include <dev/mii/mii.h> |
75 | #include <dev/mii/miivar.h> |
76 | |
77 | #include <dev/ic/rtl81x9reg.h> |
78 | #include <dev/ic/rtl81x9var.h> |
79 | |
80 | struct rtk_pci_softc { |
81 | struct rtk_softc sc_rtk; /* real rtk softc */ |
82 | |
83 | /* PCI-specific goo.*/ |
84 | void *sc_ih; |
85 | pci_chipset_tag_t sc_pc; |
86 | }; |
87 | |
88 | static const struct rtk_type rtk_pci_devs[] = { |
89 | { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8129, |
90 | RTK_8129, "Realtek 8129 10/100BaseTX" }, |
91 | { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8139, |
92 | RTK_8139, "Realtek 8139 10/100BaseTX" }, |
93 | { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8138, |
94 | RTK_8139, "Realtek 8138 10/100BaseTX" }, |
95 | { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8139D, |
96 | RTK_8139, "Realtek 8139D 10/100BaseTX" }, |
97 | { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8100, |
98 | RTK_8139, "Realtek 8100 10/100BaseTX" }, |
99 | { PCI_VENDOR_ACCTON, PCI_PRODUCT_ACCTON_MPX5030, |
100 | RTK_8139, "Accton MPX 5030/5038 10/100BaseTX" }, |
101 | { PCI_VENDOR_DELTA, PCI_PRODUCT_DELTA_8139, |
102 | RTK_8139, "Delta Electronics 8139 10/100BaseTX" }, |
103 | { PCI_VENDOR_ADDTRON, PCI_PRODUCT_ADDTRON_8139, |
104 | RTK_8139, "Addtron Technology 8139 10/100BaseTX" }, |
105 | { PCI_VENDOR_SEGA, PCI_PRODUCT_SEGA_BROADBAND, |
106 | RTK_8139, "SEGA Broadband Adapter" }, |
107 | { PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DFE520TX, |
108 | RTK_8139, "D-Link Systems DFE 520TX" }, |
109 | { PCI_VENDOR_DLINK, PCI_PRODUCT_DLINK_DFE530TXPLUS, |
110 | RTK_8139, "D-Link Systems DFE 530TX+" }, |
111 | { PCI_VENDOR_NORTEL, PCI_PRODUCT_NORTEL_BAYSTACK_21, |
112 | RTK_8139, "Baystack 21 (MPX EN5038) 10/100BaseTX" }, |
113 | }; |
114 | |
115 | static int rtk_pci_match(device_t, cfdata_t, void *); |
116 | static void rtk_pci_attach(device_t, device_t, void *); |
117 | static int rtk_pci_detach(device_t, int); |
118 | |
119 | CFATTACH_DECL_NEW(rtk_pci, sizeof(struct rtk_pci_softc), |
120 | rtk_pci_match, rtk_pci_attach, rtk_pci_detach, NULL); |
121 | |
122 | static const struct rtk_type * |
123 | rtk_pci_lookup(const struct pci_attach_args *pa) |
124 | { |
125 | int i; |
126 | |
127 | for (i = 0; i < __arraycount(rtk_pci_devs); i++) { |
128 | if (PCI_VENDOR(pa->pa_id) != rtk_pci_devs[i].rtk_vid) |
129 | continue; |
130 | if (PCI_PRODUCT(pa->pa_id) == rtk_pci_devs[i].rtk_did) |
131 | return &rtk_pci_devs[i]; |
132 | } |
133 | |
134 | return NULL; |
135 | } |
136 | |
137 | static int |
138 | rtk_pci_match(device_t parent, cfdata_t cf, void *aux) |
139 | { |
140 | struct pci_attach_args *pa = aux; |
141 | |
142 | if (rtk_pci_lookup(pa) != NULL) |
143 | return 1; |
144 | |
145 | return 0; |
146 | } |
147 | |
148 | /* |
149 | * Attach the interface. Allocate softc structures, do ifmedia |
150 | * setup and ethernet/BPF attach. |
151 | */ |
152 | static void |
153 | rtk_pci_attach(device_t parent, device_t self, void *aux) |
154 | { |
155 | struct rtk_pci_softc *psc = device_private(self); |
156 | struct rtk_softc *sc = &psc->sc_rtk; |
157 | struct pci_attach_args *pa = aux; |
158 | pci_chipset_tag_t pc = pa->pa_pc; |
159 | pci_intr_handle_t ih; |
160 | bus_space_tag_t iot, memt; |
161 | bus_space_handle_t ioh, memh; |
162 | bus_size_t iosize, memsize; |
163 | pcireg_t csr; |
164 | const char *intrstr = NULL; |
165 | const struct rtk_type *t; |
166 | bool ioh_valid, memh_valid; |
167 | char intrbuf[PCI_INTRSTR_LEN]; |
168 | |
169 | sc->sc_dev = self; |
170 | psc->sc_pc = pa->pa_pc; |
171 | |
172 | t = rtk_pci_lookup(pa); |
173 | KASSERT(t != NULL); |
174 | |
175 | pci_aprint_devinfo_fancy(pa, NULL, t->rtk_name, 1); |
176 | |
177 | /* |
178 | * Map control/status registers. |
179 | * |
180 | * The original FreeBSD's driver has the following comment: |
181 | * |
182 | * Default to using PIO access for this driver. On SMP systems, |
183 | * there appear to be problems with memory mapped mode: |
184 | * it looks like doing too many memory mapped access |
185 | * back to back in rapid succession can hang the bus. |
186 | * I'm inclined to blame this on crummy design/construction |
187 | * on the part of Realtek. Memory mapped mode does appear to |
188 | * work on uniprocessor systems though. |
189 | * |
190 | * On NetBSD, some ports don't support PCI I/O space properly, |
191 | * so we try to map both and prefer I/O space to mem space. |
192 | */ |
193 | ioh_valid = (pci_mapreg_map(pa, RTK_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, |
194 | &iot, &ioh, NULL, &iosize) == 0); |
195 | memh_valid = (pci_mapreg_map(pa, RTK_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, |
196 | &memt, &memh, NULL, &memsize) == 0); |
197 | if (ioh_valid) { |
198 | sc->rtk_btag = iot; |
199 | sc->rtk_bhandle = ioh; |
200 | sc->rtk_bsize = iosize; |
201 | if (memh_valid) |
202 | bus_space_unmap(memt, memh, memsize); |
203 | } else if (memh_valid) { |
204 | sc->rtk_btag = memt; |
205 | sc->rtk_bhandle = memh; |
206 | sc->rtk_bsize = memsize; |
207 | } else { |
208 | aprint_error_dev(self, "can't map registers\n" ); |
209 | return; |
210 | } |
211 | |
212 | /* Allocate interrupt */ |
213 | if (pci_intr_map(pa, &ih)) { |
214 | aprint_error_dev(self, "couldn't map interrupt\n" ); |
215 | return; |
216 | } |
217 | intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf)); |
218 | psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, rtk_intr, sc); |
219 | if (psc->sc_ih == NULL) { |
220 | aprint_error_dev(self, "couldn't establish interrupt" ); |
221 | if (intrstr != NULL) |
222 | aprint_error(" at %s" , intrstr); |
223 | aprint_error("\n" ); |
224 | return; |
225 | } |
226 | |
227 | if (t->rtk_basetype == RTK_8129) |
228 | sc->sc_quirk |= RTKQ_8129; |
229 | |
230 | aprint_normal_dev(self, "interrupting at %s\n" , intrstr); |
231 | |
232 | csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); |
233 | csr |= PCI_COMMAND_MASTER_ENABLE; |
234 | pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, csr); |
235 | |
236 | sc->sc_dmat = pa->pa_dmat; |
237 | sc->sc_flags |= RTK_ENABLED; |
238 | |
239 | if (pmf_device_register(self, NULL, NULL)) |
240 | pmf_class_network_register(self, &sc->ethercom.ec_if); |
241 | else |
242 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
243 | |
244 | rtk_attach(sc); |
245 | } |
246 | |
247 | static int |
248 | rtk_pci_detach(device_t self, int flags) |
249 | { |
250 | struct rtk_pci_softc *psc = device_private(self); |
251 | struct rtk_softc *sc = &psc->sc_rtk; |
252 | int rv; |
253 | |
254 | /* rtk_stop() */ |
255 | sc->ethercom.ec_if.if_stop(&sc->ethercom.ec_if, 0); |
256 | |
257 | rv = rtk_detach(sc); |
258 | if (rv) |
259 | return rv; |
260 | |
261 | if (psc->sc_ih != NULL) { |
262 | pci_intr_disestablish(psc->sc_pc, psc->sc_ih); |
263 | psc->sc_ih = NULL; |
264 | } |
265 | |
266 | if (sc->rtk_bsize != 0) { |
267 | bus_space_unmap(sc->rtk_btag, sc->rtk_bhandle, sc->rtk_bsize); |
268 | sc->rtk_bsize = 0; |
269 | } |
270 | |
271 | return 0; |
272 | } |
273 | |