Line data Source code
1 : /* $OpenBSD: if_re_cardbus.c,v 1.28 2015/11/24 17:11:39 mpi Exp $ */
2 :
3 : /*
4 : * Copyright (c) 2005 Peter Valchev <pvalchev@openbsd.org>
5 : *
6 : * Permission to use, copy, modify, and distribute this software for any
7 : * purpose with or without fee is hereby granted, provided that the above
8 : * copyright notice and this permission notice appear in all copies.
9 : *
10 : * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 : * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 : * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 : * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 : * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 : * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 : * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 : */
18 :
19 : /*
20 : * Cardbus front-end for the Realtek 8169
21 : */
22 :
23 : #include <sys/param.h>
24 : #include <sys/endian.h>
25 : #include <sys/systm.h>
26 : #include <sys/sockio.h>
27 : #include <sys/mbuf.h>
28 : #include <sys/malloc.h>
29 : #include <sys/kernel.h>
30 : #include <sys/device.h>
31 : #include <sys/timeout.h>
32 : #include <sys/socket.h>
33 :
34 : #include <net/if.h>
35 : #include <net/if_media.h>
36 :
37 : #include <netinet/in.h>
38 : #include <netinet/if_ether.h>
39 :
40 : #include <dev/mii/miivar.h>
41 :
42 : #include <dev/pci/pcidevs.h>
43 :
44 : #include <dev/cardbus/cardbusvar.h>
45 :
46 : #include <dev/ic/rtl81x9reg.h>
47 : #include <dev/ic/revar.h>
48 :
49 : struct re_cardbus_softc {
50 : /* General */
51 : struct rl_softc sc_rl;
52 :
53 : /* Cardbus-specific data */
54 : void *sc_ih;
55 : cardbus_devfunc_t ct;
56 : pcitag_t sc_tag;
57 : pci_chipset_tag_t sc_pc;
58 : int sc_csr;
59 : int sc_cben;
60 : int sc_bar_reg;
61 : pcireg_t sc_bar_val;
62 : int sc_intrline;
63 :
64 : bus_size_t sc_mapsize;
65 : };
66 :
67 : int re_cardbus_probe(struct device *, void *, void *);
68 : void re_cardbus_attach(struct device *, struct device *, void *);
69 : int re_cardbus_detach(struct device *, int);
70 : void re_cardbus_setup(struct rl_softc *);
71 :
72 : /*
73 : * Cardbus autoconfig definitions
74 : */
75 : struct cfattach re_cardbus_ca = {
76 : sizeof(struct re_cardbus_softc),
77 : re_cardbus_probe,
78 : re_cardbus_attach,
79 : re_cardbus_detach
80 : };
81 :
82 : const struct pci_matchid re_cardbus_devices[] = {
83 : { PCI_VENDOR_REALTEK, PCI_PRODUCT_REALTEK_RT8169 },
84 : };
85 :
86 : /*
87 : * Probe for a Realtek 8169/8110 chip. Check the PCI vendor and device
88 : * IDs against our list and return a device name if we find a match.
89 : */
90 : int
91 0 : re_cardbus_probe(struct device *parent, void *match, void *aux)
92 : {
93 0 : return (cardbus_matchbyid((struct cardbus_attach_args *)aux,
94 : re_cardbus_devices, nitems(re_cardbus_devices)));
95 : }
96 :
97 : /*
98 : * Attach the interface. Allocate softc structures, do ifmedia
99 : * setup and ethernet/BPF attach.
100 : */
101 : void
102 0 : re_cardbus_attach(struct device *parent, struct device *self, void *aux)
103 : {
104 0 : struct re_cardbus_softc *csc = (struct re_cardbus_softc *)self;
105 0 : struct rl_softc *sc = &csc->sc_rl;
106 0 : struct cardbus_attach_args *ca = aux;
107 : struct cardbus_softc *psc =
108 0 : (struct cardbus_softc *)sc->sc_dev.dv_parent;
109 0 : cardbus_chipset_tag_t cc = psc->sc_cc;
110 0 : cardbus_function_tag_t cf = psc->sc_cf;
111 0 : cardbus_devfunc_t ct = ca->ca_ct;
112 0 : bus_addr_t adr;
113 0 : char intrstr[16];
114 :
115 0 : sc->sc_dmat = ca->ca_dmat;
116 0 : csc->ct = ct;
117 0 : csc->sc_tag = ca->ca_tag;
118 0 : csc->sc_pc = ca->ca_pc;
119 0 : csc->sc_intrline = ca->ca_intrline;
120 :
121 : /*
122 : * Map control/status registers.
123 : */
124 0 : if (Cardbus_mapreg_map(ct, RL_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0,
125 0 : &sc->rl_btag, &sc->rl_bhandle, &adr, &csc->sc_mapsize) == 0) {
126 0 : csc->sc_cben = CARDBUS_MEM_ENABLE;
127 0 : csc->sc_csr |= PCI_COMMAND_MEM_ENABLE;
128 0 : csc->sc_bar_reg = RL_PCI_LOMEM;
129 0 : csc->sc_bar_val = adr | PCI_MAPREG_TYPE_MEM;
130 : } else {
131 0 : printf(": can't map mem space\n");
132 0 : return;
133 : }
134 :
135 : /* Enable power */
136 0 : Cardbus_function_enable(ct);
137 :
138 : /* Get chip out of powersave mode (if applicable), initialize
139 : * config registers */
140 0 : re_cardbus_setup(sc);
141 :
142 : /* Allocate interrupt */
143 0 : csc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline,
144 0 : IPL_NET, re_intr, sc, sc->sc_dev.dv_xname);
145 0 : if (csc->sc_ih == NULL) {
146 0 : printf(": couldn't establish interrupt at %d",
147 0 : ca->ca_intrline);
148 0 : Cardbus_function_disable(csc->ct);
149 0 : return;
150 : }
151 0 : snprintf(intrstr, sizeof(intrstr), "irq %d", ca->ca_intrline);
152 :
153 0 : sc->sc_product = PCI_PRODUCT(ca->ca_id);
154 :
155 : /* Call bus-independent (common) attach routine */
156 0 : if (re_attach(sc, intrstr)) {
157 0 : cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, csc->sc_ih);
158 0 : Cardbus_mapreg_unmap(ct, csc->sc_bar_reg, sc->rl_btag,
159 : sc->rl_bhandle, csc->sc_mapsize);
160 0 : }
161 0 : }
162 :
163 : /*
164 : * Get chip out of power-saving mode, init registers
165 : */
166 : void
167 0 : re_cardbus_setup(struct rl_softc *sc)
168 : {
169 0 : struct re_cardbus_softc *csc = (struct re_cardbus_softc *)sc;
170 0 : cardbus_devfunc_t ct = csc->ct;
171 0 : cardbus_chipset_tag_t cc = ct->ct_cc;
172 0 : pci_chipset_tag_t pc = csc->sc_pc;
173 : pcireg_t reg, command;
174 0 : int pmreg;
175 :
176 : /* Handle power management nonsense */
177 0 : if (pci_get_capability(pc, csc->sc_tag,
178 : PCI_CAP_PWRMGMT, &pmreg, 0)) {
179 0 : command = pci_conf_read(pc, csc->sc_tag,
180 0 : pmreg + PCI_PMCSR);
181 :
182 0 : if (command & RL_PSTATE_MASK) {
183 : pcireg_t iobase, membase, irq;
184 :
185 : /* Save important PCI config data */
186 0 : iobase = pci_conf_read(pc, csc->sc_tag, RL_PCI_LOIO);
187 0 : membase = pci_conf_read(pc, csc->sc_tag, RL_PCI_LOMEM);
188 0 : irq = pci_conf_read(pc, csc->sc_tag, RL_PCI_INTLINE);
189 :
190 : /* Reset the power state */
191 0 : printf("%s: chip is in D%d power mode "
192 0 : "-- setting to D0\n", sc->sc_dev.dv_xname,
193 : command & RL_PSTATE_MASK);
194 : command &= RL_PSTATE_MASK;
195 0 : pci_conf_write(pc, csc->sc_tag, pmreg + PCI_PMCSR,
196 : command);
197 :
198 : /* Restore PCI config data */
199 0 : pci_conf_write(pc, csc->sc_tag, RL_PCI_LOIO, iobase);
200 0 : pci_conf_write(pc, csc->sc_tag, RL_PCI_LOMEM, membase);
201 0 : pci_conf_write(pc, csc->sc_tag, RL_PCI_INTLINE, irq);
202 0 : }
203 : }
204 :
205 : /* Make sure the right access type is on the Cardbus bridge */
206 0 : (*ct->ct_cf->cardbus_ctrl)(cc, csc->sc_cben);
207 0 : (*ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
208 :
209 : /* Program the BAR */
210 0 : pci_conf_write(pc, csc->sc_tag, csc->sc_bar_reg, csc->sc_bar_val);
211 :
212 : /* Enable proper bits in CARDBUS CSR */
213 0 : reg = pci_conf_read(pc, csc->sc_tag, PCI_COMMAND_STATUS_REG);
214 0 : reg &= ~(PCI_COMMAND_IO_ENABLE|PCI_COMMAND_MEM_ENABLE);
215 0 : reg |= csc->sc_csr;
216 0 : pci_conf_write(pc, csc->sc_tag, PCI_COMMAND_STATUS_REG, reg);
217 :
218 : /* Make sure the latency timer is set to some reasonable value */
219 0 : reg = pci_conf_read(pc, csc->sc_tag, PCI_BHLC_REG);
220 0 : if (PCI_LATTIMER(reg) < 0x20) {
221 0 : reg &= ~(PCI_LATTIMER_MASK << PCI_LATTIMER_SHIFT);
222 0 : reg |= (0x20 << PCI_LATTIMER_SHIFT);
223 0 : pci_conf_write(pc, csc->sc_tag, PCI_BHLC_REG, reg);
224 0 : }
225 0 : }
226 :
227 : /*
228 : * Cardbus detach function: deallocate all resources
229 : */
230 : int
231 0 : re_cardbus_detach(struct device *self, int flags)
232 : {
233 0 : struct re_cardbus_softc *csc = (void *)self;
234 0 : struct rl_softc *sc = &csc->sc_rl;
235 0 : struct cardbus_devfunc *ct = csc->ct;
236 0 : struct ifnet *ifp = &sc->sc_arpcom.ac_if;
237 :
238 : /* Remove timeout handler */
239 0 : timeout_del(&sc->timer_handle);
240 :
241 : /* Detach PHY */
242 0 : if (LIST_FIRST(&sc->sc_mii.mii_phys) != NULL)
243 0 : mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY);
244 :
245 : /* Delete media stuff */
246 0 : ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY);
247 0 : ether_ifdetach(ifp);
248 0 : if_detach(ifp);
249 :
250 : /* Disable interrupts */
251 0 : if (csc->sc_ih != NULL)
252 0 : cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, csc->sc_ih);
253 :
254 : /* Free cardbus resources */
255 0 : Cardbus_mapreg_unmap(ct, csc->sc_bar_reg, sc->rl_btag, sc->rl_bhandle,
256 : csc->sc_mapsize);
257 :
258 0 : return (0);
259 : }
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