Annotation of sys/dev/pci/cac_pci.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: cac_pci.c,v 1.10 2005/08/09 04:10:10 mickey Exp $ */
2: /* $NetBSD: cac_pci.c,v 1.10 2001/01/10 16:48:04 ad Exp $ */
3:
4: /*-
5: * Copyright (c) 2000 The NetBSD Foundation, Inc.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to The NetBSD Foundation
9: * by Andrew Doran.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the NetBSD
22: * Foundation, Inc. and its contributors.
23: * 4. Neither the name of The NetBSD Foundation nor the names of its
24: * contributors may be used to endorse or promote products derived
25: * from this software without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37: * POSSIBILITY OF SUCH DAMAGE.
38: */
39:
40: /*
41: * PCI front-end for cac(4) driver.
42: */
43:
44: #include <sys/param.h>
45: #include <sys/systm.h>
46: #include <sys/kernel.h>
47: #include <sys/device.h>
48: #include <sys/queue.h>
49:
50: #include <machine/endian.h>
51: #include <machine/bus.h>
52:
53: #include <dev/pci/pcidevs.h>
54: #include <dev/pci/pcivar.h>
55:
56: #include <scsi/scsi_all.h>
57: #include <scsi/scsi_disk.h>
58: #include <scsi/scsiconf.h>
59:
60: #include <dev/ic/cacreg.h>
61: #include <dev/ic/cacvar.h>
62:
63: void cac_pci_attach(struct device *, struct device *, void *);
64: const struct cac_pci_type *cac_pci_findtype(struct pci_attach_args *);
65: int cac_pci_match(struct device *, void *, void *);
66:
67: struct cac_ccb *cac_pci_l0_completed(struct cac_softc *);
68: int cac_pci_l0_fifo_full(struct cac_softc *);
69: void cac_pci_l0_intr_enable(struct cac_softc *, int);
70: int cac_pci_l0_intr_pending(struct cac_softc *);
71: void cac_pci_l0_submit(struct cac_softc *, struct cac_ccb *);
72:
73: struct cfattach cac_pci_ca = {
74: sizeof(struct cac_softc), cac_pci_match, cac_pci_attach
75: };
76:
77: static const struct cac_linkage cac_pci_l0 = {
78: cac_pci_l0_completed,
79: cac_pci_l0_fifo_full,
80: cac_pci_l0_intr_enable,
81: cac_pci_l0_intr_pending,
82: cac_pci_l0_submit
83: };
84:
85: #define CT_STARTFW 0x01 /* Need to start controller firmware */
86:
87: static const
88: struct cac_pci_type {
89: int ct_subsysid;
90: int ct_flags;
91: const struct cac_linkage *ct_linkage;
92: char *ct_typestr;
93: } cac_pci_type[] = {
94: { 0x40300e11, 0, &cac_l0, "SMART-2/P" },
95: { 0x40310e11, 0, &cac_l0, "SMART-2SL" },
96: { 0x40320e11, 0, &cac_l0, "Smart Array 3200" },
97: { 0x40330e11, 0, &cac_l0, "Smart Array 3100ES" },
98: { 0x40340e11, 0, &cac_l0, "Smart Array 221" },
99: { 0x40400e11, CT_STARTFW, &cac_pci_l0, "Integrated Array" },
100: { 0x40480e11, CT_STARTFW, &cac_pci_l0, "RAID LC2" },
101: { 0x40500e11, 0, &cac_pci_l0, "Smart Array 4200" },
102: { 0x40510e11, 0, &cac_pci_l0, "Smart Array 4200ES" },
103: { 0x40580e11, 0, &cac_pci_l0, "Smart Array 431" },
104: };
105:
106: static const
107: struct cac_pci_product {
108: u_short cp_vendor;
109: u_short cp_product;
110: } cac_pci_product[] = {
111: { PCI_VENDOR_COMPAQ, PCI_PRODUCT_COMPAQ_SMART2P },
112: { PCI_VENDOR_DEC, PCI_PRODUCT_DEC_CPQ42XX },
113: { PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_1510 },
114: };
115:
116: const struct cac_pci_type *
117: cac_pci_findtype(pa)
118: struct pci_attach_args *pa;
119: {
120: const struct cac_pci_type *ct;
121: const struct cac_pci_product *cp;
122: pcireg_t subsysid;
123: int i;
124:
125: cp = cac_pci_product;
126: i = 0;
127: while (i < sizeof(cac_pci_product) / sizeof(cac_pci_product[0])) {
128: if (PCI_VENDOR(pa->pa_id) == cp->cp_vendor &&
129: PCI_PRODUCT(pa->pa_id) == cp->cp_product)
130: break;
131: cp++;
132: i++;
133: }
134: if (i == sizeof(cac_pci_product) / sizeof(cac_pci_product[0]))
135: return (NULL);
136:
137: subsysid = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
138: ct = cac_pci_type;
139: i = 0;
140: while (i < sizeof(cac_pci_type) / sizeof(cac_pci_type[0])) {
141: if (subsysid == ct->ct_subsysid)
142: break;
143: ct++;
144: i++;
145: }
146: if (i == sizeof(cac_pci_type) / sizeof(cac_pci_type[0]))
147: return (NULL);
148:
149: return (ct);
150: }
151:
152: int
153: cac_pci_match(parent, match, aux)
154: struct device *parent;
155: void *match, *aux;
156: {
157:
158: return (cac_pci_findtype(aux) != NULL);
159: }
160:
161: void
162: cac_pci_attach(parent, self, aux)
163: struct device *parent;
164: struct device *self;
165: void *aux;
166: {
167: struct pci_attach_args *pa;
168: const struct cac_pci_type *ct;
169: struct cac_softc *sc;
170: pci_chipset_tag_t pc;
171: pci_intr_handle_t ih;
172: const char *intrstr;
173: pcireg_t reg;
174: bus_size_t size;
175: int memr, ior, i;
176:
177: sc = (struct cac_softc *)self;
178: pa = (struct pci_attach_args *)aux;
179: pc = pa->pa_pc;
180: ct = cac_pci_findtype(pa);
181:
182: /*
183: * Map the PCI register window.
184: */
185: memr = -1;
186: ior = -1;
187:
188: for (i = 0x10; i <= 0x14; i += 4) {
189: reg = pci_conf_read(pa->pa_pc, pa->pa_tag, i);
190:
191: if (PCI_MAPREG_TYPE(reg) == PCI_MAPREG_TYPE_IO) {
192: if (ior == -1 && PCI_MAPREG_IO_SIZE(reg) != 0)
193: ior = i;
194: } else {
195: if (memr == -1 && PCI_MAPREG_MEM_SIZE(reg) != 0)
196: memr = i;
197: }
198: }
199:
200: if (memr != -1) {
201: if (pci_mapreg_map(pa, memr, PCI_MAPREG_TYPE_MEM, 0,
202: &sc->sc_iot, &sc->sc_ioh, NULL, &size, 0))
203: memr = -1;
204: else
205: ior = -1;
206: }
207: if (ior != -1)
208: if (pci_mapreg_map(pa, ior, PCI_MAPREG_TYPE_IO, 0,
209: &sc->sc_iot, &sc->sc_ioh, NULL, &size, 0))
210: ior = -1;
211: if (memr == -1 && ior == -1) {
212: printf("%s: can't map i/o or memory space\n", self->dv_xname);
213: return;
214: }
215:
216: sc->sc_dmat = pa->pa_dmat;
217:
218: /* Map and establish the interrupt. */
219: if (pci_intr_map(pa, &ih)) {
220: printf(": can't map interrupt\n");
221: bus_space_unmap(sc->sc_iot, sc->sc_ioh, size);
222: return;
223: }
224: intrstr = pci_intr_string(pc, ih);
225: sc->sc_ih = pci_intr_establish(pc, ih, IPL_BIO, cac_intr,
226: sc, sc->sc_dv.dv_xname);
227: if (sc->sc_ih == NULL) {
228: printf(": can't establish interrupt");
229: if (intrstr != NULL)
230: printf(" at %s", intrstr);
231: printf("\n");
232: bus_space_unmap(sc->sc_iot, sc->sc_ioh, size);
233: return;
234: }
235:
236: printf(": %s Compaq %s\n", intrstr, ct->ct_typestr);
237:
238: /* Now attach to the bus-independent code. */
239: sc->sc_cl = ct->ct_linkage;
240: cac_init(sc, (ct->ct_flags & CT_STARTFW) != 0);
241: }
242:
243: void
244: cac_pci_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb)
245: {
246:
247: bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 0,
248: sc->sc_dmamap->dm_mapsize,
249: BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
250: cac_outl(sc, CAC_42REG_CMD_FIFO, ccb->ccb_paddr);
251: }
252:
253: struct cac_ccb *
254: cac_pci_l0_completed(struct cac_softc *sc)
255: {
256: struct cac_ccb *ccb;
257: u_int32_t off;
258:
259: if ((off = cac_inl(sc, CAC_42REG_DONE_FIFO)) == 0xffffffffU)
260: return (NULL);
261:
262: cac_outl(sc, CAC_42REG_DONE_FIFO, 0);
263: off = (off & ~3) - sc->sc_ccbs_paddr;
264: ccb = (struct cac_ccb *)(sc->sc_ccbs + off);
265:
266: bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, 0,
267: sc->sc_dmamap->dm_mapsize,
268: BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
269:
270: return (ccb);
271: }
272:
273: int
274: cac_pci_l0_intr_pending(struct cac_softc *sc)
275: {
276:
277: return ((cac_inl(sc, CAC_42REG_STATUS) & CAC_42_EXTINT) != 0);
278: }
279:
280: void
281: cac_pci_l0_intr_enable(struct cac_softc *sc, int state)
282: {
283:
284: cac_outl(sc, CAC_42REG_INTR_MASK, (state ? 0 : 8)); /* XXX */
285: }
286:
287: int
288: cac_pci_l0_fifo_full(struct cac_softc *sc)
289: {
290:
291: return (cac_inl(sc, CAC_42REG_CMD_FIFO) != 0);
292: }
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