1 | /* $NetBSD: cac_pci.c,v 1.35 2016/09/27 03:33:32 pgoyette Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2000 The NetBSD Foundation, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Andrew Doran. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
29 | * POSSIBILITY OF SUCH DAMAGE. |
30 | */ |
31 | |
32 | /* |
33 | * PCI front-end for cac(4) driver. |
34 | */ |
35 | |
36 | #include <sys/cdefs.h> |
37 | __KERNEL_RCSID(0, "$NetBSD: cac_pci.c,v 1.35 2016/09/27 03:33:32 pgoyette Exp $" ); |
38 | |
39 | #include <sys/param.h> |
40 | #include <sys/systm.h> |
41 | #include <sys/kernel.h> |
42 | #include <sys/device.h> |
43 | #include <sys/queue.h> |
44 | #include <sys/module.h> |
45 | |
46 | #include <machine/endian.h> |
47 | #include <sys/bus.h> |
48 | |
49 | #include <dev/pci/pcidevs.h> |
50 | #include <dev/pci/pcivar.h> |
51 | |
52 | #include <dev/ic/cacreg.h> |
53 | #include <dev/ic/cacvar.h> |
54 | |
55 | #include "ioconf.h" |
56 | |
57 | static struct cac_ccb *cac_pci_l0_completed(struct cac_softc *); |
58 | static int cac_pci_l0_fifo_full(struct cac_softc *); |
59 | static void cac_pci_l0_intr_enable(struct cac_softc *, int); |
60 | static int cac_pci_l0_intr_pending(struct cac_softc *); |
61 | static void cac_pci_l0_submit(struct cac_softc *, struct cac_ccb *); |
62 | |
63 | static const struct cac_linkage cac_pci_l0 = { |
64 | cac_pci_l0_completed, |
65 | cac_pci_l0_fifo_full, |
66 | cac_pci_l0_intr_enable, |
67 | cac_pci_l0_intr_pending, |
68 | cac_pci_l0_submit |
69 | }; |
70 | |
71 | #define CT_STARTFW 0x01 /* Need to start controller firmware */ |
72 | |
73 | static struct cac_pci_type { |
74 | int ct_subsysid; |
75 | int ct_flags; |
76 | const struct cac_linkage *ct_linkage; |
77 | const char *ct_typestr; |
78 | } const cac_pci_type[] = { |
79 | { 0x40300e11, 0, &cac_l0, "SMART-2/P" }, |
80 | { 0x40310e11, 0, &cac_l0, "SMART-2SL" }, |
81 | { 0x40320e11, 0, &cac_l0, "Smart Array 3200" }, |
82 | { 0x40330e11, 0, &cac_l0, "Smart Array 3100ES" }, |
83 | { 0x40340e11, 0, &cac_l0, "Smart Array 221" }, |
84 | { 0x40400e11, CT_STARTFW, &cac_pci_l0, "Integrated Array" }, |
85 | { 0x40480e11, CT_STARTFW, &cac_pci_l0, "RAID LC2" }, |
86 | { 0x40500e11, 0, &cac_pci_l0, "Smart Array 4200" }, |
87 | { 0x40510e11, 0, &cac_pci_l0, "Smart Array 4200ES" }, |
88 | { 0x40580e11, 0, &cac_pci_l0, "Smart Array 431" }, |
89 | }; |
90 | |
91 | static struct cac_pci_product { |
92 | u_short cp_vendor; |
93 | u_short cp_product; |
94 | } const cac_pci_product[] = { |
95 | { PCI_VENDOR_COMPAQ, PCI_PRODUCT_COMPAQ_SMART2P }, |
96 | { PCI_VENDOR_DEC, PCI_PRODUCT_DEC_21554 }, |
97 | { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_1510 }, |
98 | }; |
99 | |
100 | static const struct cac_pci_type * |
101 | cac_pci_findtype(struct pci_attach_args *pa) |
102 | { |
103 | const struct cac_pci_type *ct; |
104 | const struct cac_pci_product *cp; |
105 | pcireg_t subsysid; |
106 | int i; |
107 | |
108 | cp = cac_pci_product; |
109 | i = 0; |
110 | while (i < sizeof(cac_pci_product) / sizeof(cac_pci_product[0])) { |
111 | if (PCI_VENDOR(pa->pa_id) == cp->cp_vendor && |
112 | PCI_PRODUCT(pa->pa_id) == cp->cp_product) |
113 | break; |
114 | cp++; |
115 | i++; |
116 | } |
117 | if (i == sizeof(cac_pci_product) / sizeof(cac_pci_product[0])) |
118 | return (NULL); |
119 | |
120 | subsysid = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG); |
121 | ct = cac_pci_type; |
122 | i = 0; |
123 | while (i < sizeof(cac_pci_type) / sizeof(cac_pci_type[0])) { |
124 | if (subsysid == ct->ct_subsysid) |
125 | break; |
126 | ct++; |
127 | i++; |
128 | } |
129 | if (i == sizeof(cac_pci_type) / sizeof(cac_pci_type[0])) |
130 | return (NULL); |
131 | |
132 | return (ct); |
133 | } |
134 | |
135 | static int |
136 | cac_pci_match(device_t parent, cfdata_t match, void *aux) |
137 | { |
138 | |
139 | return (cac_pci_findtype(aux) != NULL); |
140 | } |
141 | |
142 | static void |
143 | cac_pci_attach(device_t parent, device_t self, void *aux) |
144 | { |
145 | struct pci_attach_args *pa; |
146 | const struct cac_pci_type *ct; |
147 | struct cac_softc *sc; |
148 | pci_chipset_tag_t pc; |
149 | pci_intr_handle_t ih; |
150 | const char *intrstr; |
151 | pcireg_t reg; |
152 | int memr, ior, i; |
153 | char intrbuf[PCI_INTRSTR_LEN]; |
154 | |
155 | aprint_naive(": RAID controller\n" ); |
156 | |
157 | sc = device_private(self); |
158 | sc->sc_dev = self; |
159 | pa = (struct pci_attach_args *)aux; |
160 | pc = pa->pa_pc; |
161 | ct = cac_pci_findtype(pa); |
162 | |
163 | /* |
164 | * Map the PCI register window. |
165 | */ |
166 | memr = -1; |
167 | ior = -1; |
168 | |
169 | for (i = 0x10; i <= 0x14; i += 4) { |
170 | reg = pci_conf_read(pa->pa_pc, pa->pa_tag, i); |
171 | |
172 | if (PCI_MAPREG_TYPE(reg) == PCI_MAPREG_TYPE_IO) { |
173 | if (ior == -1 && PCI_MAPREG_IO_SIZE(reg) != 0) |
174 | ior = i; |
175 | } else { |
176 | if (memr == -1 && PCI_MAPREG_MEM_SIZE(reg) != 0) |
177 | memr = i; |
178 | } |
179 | } |
180 | |
181 | if (memr != -1) { |
182 | if (pci_mapreg_map(pa, memr, PCI_MAPREG_TYPE_MEM, 0, |
183 | &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) |
184 | memr = -1; |
185 | else |
186 | ior = -1; |
187 | } |
188 | if (ior != -1) |
189 | if (pci_mapreg_map(pa, ior, PCI_MAPREG_TYPE_IO, 0, |
190 | &sc->sc_iot, &sc->sc_ioh, NULL, NULL)) |
191 | ior = -1; |
192 | if (memr == -1 && ior == -1) { |
193 | aprint_error_dev(self, "can't map i/o or memory space\n" ); |
194 | return; |
195 | } |
196 | |
197 | sc->sc_dmat = pa->pa_dmat; |
198 | |
199 | /* Enable the device. */ |
200 | reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); |
201 | pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, |
202 | reg | PCI_COMMAND_MASTER_ENABLE); |
203 | |
204 | /* Map and establish the interrupt. */ |
205 | if (pci_intr_map(pa, &ih)) { |
206 | aprint_error("can't map interrupt\n" ); |
207 | return; |
208 | } |
209 | intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf)); |
210 | sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, cac_intr, sc); |
211 | if (sc->sc_ih == NULL) { |
212 | aprint_error("can't establish interrupt" ); |
213 | if (intrstr != NULL) |
214 | aprint_error(" at %s" , intrstr); |
215 | aprint_error("\n" ); |
216 | return; |
217 | } |
218 | |
219 | aprint_normal(": Compaq %s\n" , ct->ct_typestr); |
220 | |
221 | /* Now attach to the bus-independent code. */ |
222 | memcpy(&sc->sc_cl, ct->ct_linkage, sizeof(sc->sc_cl)); |
223 | cac_init(sc, intrstr, (ct->ct_flags & CT_STARTFW) != 0); |
224 | } |
225 | |
226 | CFATTACH_DECL3_NEW(cac_pci, sizeof(struct cac_softc), |
227 | cac_pci_match, cac_pci_attach, NULL, NULL, cac_rescan, NULL, 0); |
228 | |
229 | static void |
230 | cac_pci_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb) |
231 | { |
232 | |
233 | bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, |
234 | (char *)ccb - (char *)sc->sc_ccbs, |
235 | sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); |
236 | cac_outl(sc, CAC_42REG_CMD_FIFO, ccb->ccb_paddr); |
237 | } |
238 | |
239 | static struct cac_ccb * |
240 | cac_pci_l0_completed(struct cac_softc *sc) |
241 | { |
242 | struct cac_ccb *ccb; |
243 | u_int32_t off; |
244 | |
245 | if ((off = cac_inl(sc, CAC_42REG_DONE_FIFO)) == 0xffffffffU) |
246 | return (NULL); |
247 | |
248 | cac_outl(sc, CAC_42REG_DONE_FIFO, 0); |
249 | |
250 | if ((off & 3) != 0) |
251 | printf("%s: failed command list returned: %lx\n" , |
252 | device_xname(sc->sc_dev), (long)off); |
253 | |
254 | off = (off & ~3) - sc->sc_ccbs_paddr; |
255 | ccb = (struct cac_ccb *)((char *)sc->sc_ccbs + off); |
256 | |
257 | bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb), |
258 | BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); |
259 | |
260 | if ((off & 3) != 0 && ccb->ccb_req.error == 0) |
261 | ccb->ccb_req.error = CAC_RET_CMD_REJECTED; |
262 | |
263 | return (ccb); |
264 | } |
265 | |
266 | static int |
267 | cac_pci_l0_intr_pending(struct cac_softc *sc) |
268 | { |
269 | |
270 | return ((cac_inl(sc, CAC_42REG_STATUS) & CAC_42_EXTINT) != 0); |
271 | } |
272 | |
273 | static void |
274 | cac_pci_l0_intr_enable(struct cac_softc *sc, int state) |
275 | { |
276 | |
277 | cac_outl(sc, CAC_42REG_INTR_MASK, (state ? 0 : 8)); /* XXX */ |
278 | } |
279 | |
280 | static int |
281 | cac_pci_l0_fifo_full(struct cac_softc *sc) |
282 | { |
283 | |
284 | return (cac_inl(sc, CAC_42REG_CMD_FIFO) != 0); |
285 | } |
286 | |
287 | MODULE(MODULE_CLASS_DRIVER, cac_pci, "cac,pci" ); |
288 | |
289 | #ifdef _MODULE |
290 | /* |
291 | * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd" |
292 | * XXX it will be defined in the common-code module |
293 | */ |
294 | #undef CFDRIVER_DECL |
295 | #define CFDRIVER_DECL(name, class, attr) |
296 | #include "ioconf.c" |
297 | #endif |
298 | |
299 | static int |
300 | cac_pci_modcmd(modcmd_t cmd, void *opaque) |
301 | { |
302 | int error = 0; |
303 | |
304 | #ifdef _MODULE |
305 | switch (cmd) { |
306 | case MODULE_CMD_INIT: |
307 | /* |
308 | * We skip over the first entry in cfdriver[] array |
309 | * since the cfdriver is attached by the common |
310 | * (non-attachment-specific) code. |
311 | */ |
312 | error = config_init_component(&cfdriver_ioconf_cac_pci[1], |
313 | cfattach_ioconf_cac_pci, cfdata_ioconf_cac_pci); |
314 | break; |
315 | case MODULE_CMD_FINI: |
316 | error = config_fini_component(&cfdriver_ioconf_cac_pci[1], |
317 | cfattach_ioconf_cac_pci, cfdata_ioconf_cac_pci); |
318 | break; |
319 | default: |
320 | error = ENOTTY; |
321 | break; |
322 | } |
323 | #endif |
324 | |
325 | return error; |
326 | } |
327 | |