xref: /netbsd-src/sys/dev/pci/mpt_pci.c (revision 21e37cc72a480a47828990a439cde7ac9ffaf0c6)
1 /*	$NetBSD: mpt_pci.c,v 1.2 2003/07/14 15:47:26 lukem Exp $	*/
2 
3 /*
4  * Copyright (c) 2003 Wasabi Systems, Inc.
5  * All rights reserved.
6  *
7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. All advertising materials mentioning features or use of this software
18  *    must display the following acknowledgement:
19  *	This product includes software developed for the NetBSD Project by
20  *	Wasabi Systems, Inc.
21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22  *    or promote products derived from this software without specific prior
23  *    written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35  * POSSIBILITY OF SUCH DAMAGE.
36  */
37 
38 /*
39  * mpt_pci.c:
40  *
41  * NetBSD PCI-specific routines for LSI Fusion adapters.
42  */
43 
44 #include <sys/cdefs.h>
45 __KERNEL_RCSID(0, "$NetBSD: mpt_pci.c,v 1.2 2003/07/14 15:47:26 lukem Exp $");
46 
47 #include <dev/ic/mpt.h>			/* pulls in all headers */
48 
49 #include <dev/pci/pcireg.h>
50 #include <dev/pci/pcivar.h>
51 #include <dev/pci/pcidevs.h>
52 
53 #define	MPT_PCI_MMBA		(PCI_MAPREG_START+0x04)
54 
55 struct mpt_pci_softc {
56 	mpt_softc_t sc_mpt;
57 
58 	pci_chipset_tag_t sc_pc;
59 	pcitag_t sc_tag;
60 
61 	void *sc_ih;
62 
63 	/* Saved volatile PCI configuration registers. */
64 	pcireg_t sc_pci_csr;
65 	pcireg_t sc_pci_bhlc;
66 	pcireg_t sc_pci_io_bar;
67 	pcireg_t sc_pci_mem0_bar[2];
68 	pcireg_t sc_pci_mem1_bar[2];
69 	pcireg_t sc_pci_rom_bar;
70 	pcireg_t sc_pci_int;
71 	pcireg_t sc_pci_pmcsr;
72 };
73 
74 static void	mpt_pci_link_peer(mpt_softc_t *);
75 static void	mpt_pci_read_config_regs(mpt_softc_t *);
76 static void	mpt_pci_set_config_regs(mpt_softc_t *);
77 
78 #define	MPP_F_FC	0x01	/* Fibre Channel adapter */
79 #define	MPP_F_DUAL	0x02	/* Dual port adapter */
80 
81 static const struct mpt_pci_product {
82 	pci_vendor_id_t		mpp_vendor;
83 	pci_product_id_t	mpp_product;
84 	int			mpp_flags;
85 	const char		*mpp_name;
86 } mpt_pci_products[] = {
87 	{ PCI_VENDOR_SYMBIOS,	PCI_PRODUCT_SYMBIOS_1030,
88 	  MPP_F_DUAL,
89 	  "LSI Logic 53c1030 Ultra320 SCSI" },
90 
91 	{ PCI_VENDOR_SYMBIOS,	PCI_PRODUCT_SYMBIOS_FC909,
92 	  MPP_F_FC,
93 	  "LSI Logic FC909 FC Adapter" },
94 	{ PCI_VENDOR_SYMBIOS,	PCI_PRODUCT_SYMBIOS_FC909A,
95 	  MPP_F_FC,
96 	  "LSI Logic FC909A FC Adapter" },
97 	{ PCI_VENDOR_SYMBIOS,	PCI_PRODUCT_SYMBIOS_FC929,
98 	  MPP_F_FC | MPP_F_DUAL,
99 	  "LSI Logic FC929 FC Adapter" },
100 	{ PCI_VENDOR_SYMBIOS,	PCI_PRODUCT_SYMBIOS_FC929_1,
101 	  MPP_F_FC | MPP_F_DUAL,
102 	  "LSI Logic FC929 FC Adapter" },
103 	{ PCI_VENDOR_SYMBIOS,	PCI_PRODUCT_SYMBIOS_FC919,
104 	  MPP_F_FC,
105 	  "LSI Logic FC919 FC Adapter" },
106 	{ PCI_VENDOR_SYMBIOS,	PCI_PRODUCT_SYMBIOS_FC919_1,
107 	  MPP_F_FC,
108 	  "LSI Logic FC919 FC Adapter" },
109 
110 	{ 0,			0,
111 	  0,
112 	  NULL },
113 };
114 
115 static const struct mpt_pci_product *
116 mpt_pci_lookup(const struct pci_attach_args *pa)
117 {
118 	const struct mpt_pci_product *mpp;
119 
120 	for (mpp = mpt_pci_products; mpp->mpp_name != NULL; mpp++) {
121 		if (PCI_VENDOR(pa->pa_id) == mpp->mpp_vendor &&
122 		    PCI_PRODUCT(pa->pa_id) == mpp->mpp_product)
123 			return (mpp);
124 	}
125 	return (NULL);
126 }
127 
128 static int
129 mpt_pci_match(struct device *parent, struct cfdata *cf, void *aux)
130 {
131 	struct pci_attach_args *pa = aux;
132 
133 	if (mpt_pci_lookup(pa) != NULL)
134 		return (1);
135 
136 	return (0);
137 }
138 
139 static void
140 mpt_pci_attach(struct device *parent, struct device *self, void *aux)
141 {
142 	struct mpt_pci_softc *psc = (void *) self;
143 	mpt_softc_t *mpt = &psc->sc_mpt;
144 	struct pci_attach_args *pa = aux;
145 	const struct mpt_pci_product *mpp;
146 	pci_intr_handle_t ih;
147 	const char *intrstr;
148 	pcireg_t reg, memtype;
149 	bus_space_tag_t memt;
150 	bus_space_handle_t memh;
151 	int memh_valid;
152 
153 	mpp = mpt_pci_lookup(pa);
154 	if (mpp == NULL) {
155 		printf("\n");
156 		panic("mpt_pci_attach");
157 	}
158 
159 	if (mpp->mpp_flags & MPP_F_FC) {
160 		mpt->is_fc = 1;
161 		aprint_naive(": Fibre Channel controller\n");
162 	} else
163 		aprint_naive(": SCSI controller\n");
164 	aprint_normal(": %s\n", mpp->mpp_name);
165 
166 	psc->sc_pc = pa->pa_pc;
167 	psc->sc_tag = pa->pa_tag;
168 
169 	mpt->sc_dmat = pa->pa_dmat;
170 	mpt->sc_set_config_regs = mpt_pci_set_config_regs;
171 
172 	/*
173 	 * Map the device.
174 	 */
175 	memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, MPT_PCI_MMBA);
176 	switch (memtype) {
177 	case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT:
178 	case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT:
179 		memh_valid = (pci_mapreg_map(pa, MPT_PCI_MMBA,
180 		    memtype, 0, &memt, &memh, NULL, NULL) == 0);
181 		break;
182 
183 	default:
184 		memh_valid = 0;
185 	}
186 
187 	if (memh_valid) {
188 		mpt->sc_st = memt;
189 		mpt->sc_sh = memh;
190 	} else {
191 		aprint_error("%s: unable to map device registers\n",
192 		    mpt->sc_dev.dv_xname);
193 		return;
194 	}
195 
196 	/*
197 	 * Make sure the PCI command register is properly configured.
198 	 */
199 	reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
200 	reg |= PCI_COMMAND_MASTER_ENABLE;
201 	/* XXX PCI_COMMAND_INVALIDATE_ENABLE */
202 	/* XXX PCI_COMMAND_PARITY_ENABLE */
203 	/* XXX PCI_COMMAND_SERR_ENABLE */
204 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, reg);
205 
206 	/*
207 	 * Ensure that the ROM is diabled.
208 	 */
209 	reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM);
210 	reg &= ~1;
211 	pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_MAPREG_ROM, reg);
212 
213 	/*
214 	 * Map and establish our interrupt.
215 	 */
216 	if (pci_intr_map(pa, &ih) != 0) {
217 		aprint_error("%s: unable to map interrupt\n",
218 		    mpt->sc_dev.dv_xname);
219 		return;
220 	}
221 	intrstr = pci_intr_string(pa->pa_pc, ih);
222 	psc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, mpt_intr, mpt);
223 	if (psc->sc_ih == NULL) {
224 		aprint_error("%s: unable to establish interrupt",
225 		    mpt->sc_dev.dv_xname);
226 		if (intrstr != NULL)
227 			aprint_normal(" at %s", intrstr);
228 		aprint_normal("\n");
229 		return;
230 	}
231 	aprint_normal("%s: interrupting at %s\n", mpt->sc_dev.dv_xname,
232 	    intrstr);
233 
234 	/* Disable interrupts on the part. */
235 	mpt_disable_ints(mpt);
236 
237 	/* Allocate DMA memory. */
238 	if (mpt_dma_mem_alloc(mpt) != 0) {
239 		aprint_error("%s: unable to allocate DMA memory\n",
240 		    mpt->sc_dev.dv_xname);
241 		return;
242 	}
243 
244 	/*
245 	 * Save the PCI config register values.
246 	 *
247 	 * Hard resets are known to screw up the BAR for diagnostic
248 	 * memory accesses (Mem1).
249 	 *
250 	 * Using Mem1 is know to make the chip stop responding to
251 	 * configuration cycles, so we need to save it now.
252 	 */
253 	mpt_pci_read_config_regs(mpt);
254 
255 	/*
256 	 * If we're a dual-port adapter, try to find our peer.  We
257 	 * need to fix his PCI config registers, too.
258 	 */
259 	if (mpp->mpp_flags & MPP_F_DUAL)
260 		mpt_pci_link_peer(mpt);
261 
262 	/* Initialize the hardware. */
263 	if (mpt_init(mpt, MPT_DB_INIT_HOST) != 0) {
264 		/* Error message already printed. */
265 		return;
266 	}
267 
268 	/* Attach to scsipi. */
269 	mpt_scsipi_attach(mpt);
270 }
271 
272 CFATTACH_DECL(mpt_pci, sizeof(struct mpt_pci_softc),
273     mpt_pci_match, mpt_pci_attach, NULL, NULL);
274 
275 /*
276  * Find and remember our peer PCI function on a dual-port device.
277  */
278 static void
279 mpt_pci_link_peer(mpt_softc_t *mpt)
280 {
281 	extern struct cfdriver mpt_cd;
282 
283 	struct mpt_pci_softc *peer_psc, *psc = (void *) mpt;
284 	struct device *dev;
285 	int unit, b, d, f, peer_b, peer_d, peer_f;
286 
287 	pci_decompose_tag(psc->sc_pc, psc->sc_tag, &b, &d, &f);
288 
289 	for (unit = 0; unit < mpt_cd.cd_ndevs; unit++) {
290 		if (unit == mpt->sc_dev.dv_unit)
291 			continue;
292 		dev = device_lookup(&mpt_cd, unit);
293 		if (dev == NULL)
294 			continue;
295 		if (dev->dv_cfattach != &mpt_pci_ca)
296 			continue;
297 		peer_psc = (void *) dev;
298 		if (peer_psc->sc_pc != psc->sc_pc)
299 			continue;
300 		pci_decompose_tag(peer_psc->sc_pc, peer_psc->sc_tag,
301 		    &peer_b, &peer_d, &peer_f);
302 		if (peer_b == b && peer_d == d) {
303 			if (mpt->verbose)
304 				mpt_prt(mpt, "linking with peer: %s",
305 				    peer_psc->sc_mpt.sc_dev.dv_xname);
306 			mpt->mpt2 = (mpt_softc_t *) peer_psc;
307 			peer_psc->sc_mpt.mpt2 = mpt;
308 			return;
309 		}
310 	}
311 }
312 
313 /*
314  * Save the volatile PCI configuration registers.
315  */
316 static void
317 mpt_pci_read_config_regs(mpt_softc_t *mpt)
318 {
319 	struct mpt_pci_softc *psc = (void *) mpt;
320 
321 	psc->sc_pci_csr = pci_conf_read(psc->sc_pc, psc->sc_tag,
322 	    PCI_COMMAND_STATUS_REG);
323 	psc->sc_pci_bhlc = pci_conf_read(psc->sc_pc, psc->sc_tag,
324 	    PCI_BHLC_REG);
325 	psc->sc_pci_io_bar = pci_conf_read(psc->sc_pc, psc->sc_tag,
326 	    PCI_MAPREG_START);
327 	psc->sc_pci_mem0_bar[0] = pci_conf_read(psc->sc_pc, psc->sc_tag,
328 	    PCI_MAPREG_START+0x04);
329 	psc->sc_pci_mem0_bar[1] = pci_conf_read(psc->sc_pc, psc->sc_tag,
330 	    PCI_MAPREG_START+0x08);
331 	psc->sc_pci_mem1_bar[0] = pci_conf_read(psc->sc_pc, psc->sc_tag,
332 	    PCI_MAPREG_START+0x0c);
333 	psc->sc_pci_mem1_bar[1] = pci_conf_read(psc->sc_pc, psc->sc_tag,
334 	    PCI_MAPREG_START+0x10);
335 	psc->sc_pci_rom_bar = pci_conf_read(psc->sc_pc, psc->sc_tag,
336 	    PCI_MAPREG_ROM);
337 	psc->sc_pci_int = pci_conf_read(psc->sc_pc, psc->sc_tag,
338 	    PCI_INTERRUPT_REG);
339 	psc->sc_pci_pmcsr = pci_conf_read(psc->sc_pc, psc->sc_tag, 0x44);
340 }
341 
342 /*
343  * Restore the volatile PCI configuration registers.
344  */
345 static void
346 mpt_pci_set_config_regs(mpt_softc_t *mpt)
347 {
348 	struct mpt_pci_softc *psc = (void *) mpt;
349 
350 	pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_COMMAND_STATUS_REG,
351 	    psc->sc_pci_csr);
352 	pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_BHLC_REG,
353 	    psc->sc_pci_bhlc);
354 	pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_START,
355 	    psc->sc_pci_io_bar);
356 	pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_START+0x04,
357 	    psc->sc_pci_mem0_bar[0]);
358 	pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_START+0x08,
359 	    psc->sc_pci_mem0_bar[1]);
360 	pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_START+0x0c,
361 	    psc->sc_pci_mem1_bar[0]);
362 	pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_START+0x10,
363 	    psc->sc_pci_mem1_bar[1]);
364 	pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_MAPREG_ROM,
365 	    psc->sc_pci_rom_bar);
366 	pci_conf_write(psc->sc_pc, psc->sc_tag, PCI_INTERRUPT_REG,
367 	    psc->sc_pci_int);
368 	pci_conf_write(psc->sc_pc, psc->sc_tag, 0x44, psc->sc_pci_pmcsr);
369 }
370