xref: /netbsd/sys/dev/pci/cac_pci.c (revision 79fb1406)
1 /*	$NetBSD: cac_pci.c,v 1.36 2018/12/09 11:14:01 jdolecek 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 1.36 2018/12/09 11:14:01 jdolecek 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 *
cac_pci_findtype(struct pci_attach_args * pa)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
cac_pci_match(device_t parent,cfdata_t match,void * aux)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
cac_pci_attach(device_t parent,device_t self,void * aux)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_xname(pc, ih, IPL_BIO, cac_intr, sc,
211 	    device_xname(self));
212 	if (sc->sc_ih == NULL) {
213 		aprint_error("can't establish interrupt");
214 		if (intrstr != NULL)
215 			aprint_error(" at %s", intrstr);
216 		aprint_error("\n");
217 		return;
218 	}
219 
220 	aprint_normal(": Compaq %s\n", ct->ct_typestr);
221 
222 	/* Now attach to the bus-independent code. */
223 	memcpy(&sc->sc_cl, ct->ct_linkage, sizeof(sc->sc_cl));
224 	cac_init(sc, intrstr, (ct->ct_flags & CT_STARTFW) != 0);
225 }
226 
227 CFATTACH_DECL3_NEW(cac_pci, sizeof(struct cac_softc),
228     cac_pci_match, cac_pci_attach, NULL, NULL, cac_rescan, NULL, 0);
229 
230 static void
cac_pci_l0_submit(struct cac_softc * sc,struct cac_ccb * ccb)231 cac_pci_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb)
232 {
233 
234 	bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
235 	    (char *)ccb - (char *)sc->sc_ccbs,
236 	    sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
237 	cac_outl(sc, CAC_42REG_CMD_FIFO, ccb->ccb_paddr);
238 }
239 
240 static struct cac_ccb *
cac_pci_l0_completed(struct cac_softc * sc)241 cac_pci_l0_completed(struct cac_softc *sc)
242 {
243 	struct cac_ccb *ccb;
244 	u_int32_t off;
245 
246 	if ((off = cac_inl(sc, CAC_42REG_DONE_FIFO)) == 0xffffffffU)
247 		return (NULL);
248 
249 	cac_outl(sc, CAC_42REG_DONE_FIFO, 0);
250 
251 	if ((off & 3) != 0)
252 		printf("%s: failed command list returned: %lx\n",
253 		    device_xname(sc->sc_dev), (long)off);
254 
255 	off = (off & ~3) - sc->sc_ccbs_paddr;
256 	ccb = (struct cac_ccb *)((char *)sc->sc_ccbs + off);
257 
258 	bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb),
259 	    BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
260 
261 	if ((off & 3) != 0 && ccb->ccb_req.error == 0)
262 		ccb->ccb_req.error = CAC_RET_CMD_REJECTED;
263 
264 	return (ccb);
265 }
266 
267 static int
cac_pci_l0_intr_pending(struct cac_softc * sc)268 cac_pci_l0_intr_pending(struct cac_softc *sc)
269 {
270 
271 	return ((cac_inl(sc, CAC_42REG_STATUS) & CAC_42_EXTINT) != 0);
272 }
273 
274 static void
cac_pci_l0_intr_enable(struct cac_softc * sc,int state)275 cac_pci_l0_intr_enable(struct cac_softc *sc, int state)
276 {
277 
278 	cac_outl(sc, CAC_42REG_INTR_MASK, (state ? 0 : 8));	/* XXX */
279 }
280 
281 static int
cac_pci_l0_fifo_full(struct cac_softc * sc)282 cac_pci_l0_fifo_full(struct cac_softc *sc)
283 {
284 
285 	return (cac_inl(sc, CAC_42REG_CMD_FIFO) != 0);
286 }
287 
288 MODULE(MODULE_CLASS_DRIVER, cac_pci, "cac,pci");
289 
290 #ifdef _MODULE
291 /*
292  * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd"
293  * XXX it will be defined in the common-code module
294  */
295 #undef  CFDRIVER_DECL
296 #define CFDRIVER_DECL(name, class, attr)
297 #include "ioconf.c"
298 #endif
299 
300 static int
cac_pci_modcmd(modcmd_t cmd,void * opaque)301 cac_pci_modcmd(modcmd_t cmd, void *opaque)
302 {
303 	int error = 0;
304 
305 #ifdef _MODULE
306 	switch (cmd) {
307 	case MODULE_CMD_INIT:
308 		/*
309 		 * We skip over the first entry in cfdriver[] array
310 		 * since the cfdriver is attached by the common
311 		 * (non-attachment-specific) code.
312 		 */
313 		error = config_init_component(&cfdriver_ioconf_cac_pci[1],
314 		    cfattach_ioconf_cac_pci, cfdata_ioconf_cac_pci);
315 		break;
316 	case MODULE_CMD_FINI:
317 		error = config_fini_component(&cfdriver_ioconf_cac_pci[1],
318 		    cfattach_ioconf_cac_pci, cfdata_ioconf_cac_pci);
319 		break;
320 	default:
321 		error = ENOTTY;
322 		break;
323 	}
324 #endif
325 
326 	return error;
327 }
328