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lsi64854.c (145217) lsi64854.c (146392)
1/*-
2 * Copyright (c) 2004 Scott Long
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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59 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
60 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
61 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
62 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
63 * POSSIBILITY OF SUCH DAMAGE.
64 */
65
66#include <sys/cdefs.h>
1/*-
2 * Copyright (c) 2004 Scott Long
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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59 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
60 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
61 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
62 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
63 * POSSIBILITY OF SUCH DAMAGE.
64 */
65
66#include <sys/cdefs.h>
67__FBSDID("$FreeBSD: head/sys/sparc64/sbus/lsi64854.c 145217 2005-04-18 02:34:22Z marius $");
67__FBSDID("$FreeBSD: head/sys/sparc64/sbus/lsi64854.c 146392 2005-05-19 14:51:10Z marius $");
68
69#include <sys/param.h>
70#include <sys/systm.h>
71#include <sys/bus.h>
72#include <sys/kernel.h>
73#include <sys/resource.h>
74#include <sys/lock.h>
75#include <sys/mutex.h>

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108/*
109 * Finish attaching this DMA device.
110 * Front-end must fill in these fields:
111 * sc_regs
112 * sc_burst
113 * sc_channel (one of SCSI, ENET, PP)
114 * sc_client (one of SCSI, ENET, PP `soft_c' pointers)
115 */
68
69#include <sys/param.h>
70#include <sys/systm.h>
71#include <sys/bus.h>
72#include <sys/kernel.h>
73#include <sys/resource.h>
74#include <sys/lock.h>
75#include <sys/mutex.h>

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108/*
109 * Finish attaching this DMA device.
110 * Front-end must fill in these fields:
111 * sc_regs
112 * sc_burst
113 * sc_channel (one of SCSI, ENET, PP)
114 * sc_client (one of SCSI, ENET, PP `soft_c' pointers)
115 */
116void
116int
117lsi64854_attach(struct lsi64854_softc *sc)
118{
119 uint32_t csr;
117lsi64854_attach(struct lsi64854_softc *sc)
118{
119 uint32_t csr;
120 int error;
120
121 /* Indirect functions */
122 switch (sc->sc_channel) {
123 case L64854_CHANNEL_SCSI:
124 sc->intr = lsi64854_scsi_intr;
125 sc->setup = lsi64854_setup;
126 break;
127 case L64854_CHANNEL_ENET:
128 sc->intr = lsi64854_enet_intr;
129 break;
130 case L64854_CHANNEL_PP:
131 sc->setup = lsi64854_setup_pp;
132 break;
133 default:
134 device_printf(sc->sc_dev, "unknown channel\n");
135 }
136 sc->reset = lsi64854_reset;
137
138 /* Allocate a dmamap */
121
122 /* Indirect functions */
123 switch (sc->sc_channel) {
124 case L64854_CHANNEL_SCSI:
125 sc->intr = lsi64854_scsi_intr;
126 sc->setup = lsi64854_setup;
127 break;
128 case L64854_CHANNEL_ENET:
129 sc->intr = lsi64854_enet_intr;
130 break;
131 case L64854_CHANNEL_PP:
132 sc->setup = lsi64854_setup_pp;
133 break;
134 default:
135 device_printf(sc->sc_dev, "unknown channel\n");
136 }
137 sc->reset = lsi64854_reset;
138
139 /* Allocate a dmamap */
139 if (bus_dma_tag_create(
140 error = bus_dma_tag_create(
140 sc->sc_parent_dmat, /* parent */
141 1, 0, /* alignment, boundary */
142 BUS_SPACE_MAXADDR, /* lowaddr */
143 BUS_SPACE_MAXADDR, /* highaddr */
144 NULL, NULL, /* filter, filterarg */
145 MAX_DMA_SZ, /* maxsize */
146 1, /* nsegments */
147 MAX_DMA_SZ, /* maxsegsize */
148 BUS_DMA_ALLOCNOW, /* flags */
149 NULL, NULL, /* lockfunc, lockarg */
141 sc->sc_parent_dmat, /* parent */
142 1, 0, /* alignment, boundary */
143 BUS_SPACE_MAXADDR, /* lowaddr */
144 BUS_SPACE_MAXADDR, /* highaddr */
145 NULL, NULL, /* filter, filterarg */
146 MAX_DMA_SZ, /* maxsize */
147 1, /* nsegments */
148 MAX_DMA_SZ, /* maxsegsize */
149 BUS_DMA_ALLOCNOW, /* flags */
150 NULL, NULL, /* lockfunc, lockarg */
150 &sc->sc_buffer_dmat)) {
151 &sc->sc_buffer_dmat);
152 if (error != 0) {
151 device_printf(sc->sc_dev, "cannot allocate buffer DMA tag\n");
153 device_printf(sc->sc_dev, "cannot allocate buffer DMA tag\n");
152 return;
154 return (error);
153 }
154
155 }
156
155 if (bus_dmamap_create(sc->sc_buffer_dmat, 0, &sc->sc_dmamap) != 0) {
157 error = bus_dmamap_create(sc->sc_buffer_dmat, 0, &sc->sc_dmamap);
158 if (error != 0) {
156 device_printf(sc->sc_dev, "DMA map create failed\n");
159 device_printf(sc->sc_dev, "DMA map create failed\n");
157 return;
160 bus_dma_tag_destroy(sc->sc_buffer_dmat);
161 return (error);
158 }
159
160 csr = L64854_GCSR(sc);
161 sc->sc_rev = csr & L64854_DEVID;
162 if (sc->sc_rev == DMAREV_HME)
162 }
163
164 csr = L64854_GCSR(sc);
165 sc->sc_rev = csr & L64854_DEVID;
166 if (sc->sc_rev == DMAREV_HME)
163 return;
167 return (0);
164 device_printf(sc->sc_dev, "DMA rev. ");
165 switch (sc->sc_rev) {
166 case DMAREV_0:
167 printf("0");
168 break;
169 case DMAREV_ESC:
168 device_printf(sc->sc_dev, "DMA rev. ");
169 switch (sc->sc_rev) {
170 case DMAREV_0:
171 printf("0");
172 break;
173 case DMAREV_ESC:
170 printf("esc");
174 printf("ESC");
171 break;
172 case DMAREV_1:
173 printf("1");
174 break;
175 case DMAREV_PLUS:
176 printf("1+");
177 break;
178 case DMAREV_2:
179 printf("2");
180 break;
181 default:
182 printf("unknown (0x%x)", sc->sc_rev);
183 }
184
185 DPRINTF(LDB_ANY, (", burst 0x%x, csr 0x%x", sc->sc_burst, csr));
186 printf("\n");
175 break;
176 case DMAREV_1:
177 printf("1");
178 break;
179 case DMAREV_PLUS:
180 printf("1+");
181 break;
182 case DMAREV_2:
183 printf("2");
184 break;
185 default:
186 printf("unknown (0x%x)", sc->sc_rev);
187 }
188
189 DPRINTF(LDB_ANY, (", burst 0x%x, csr 0x%x", sc->sc_burst, csr));
190 printf("\n");
191
192 return (0);
187}
188
193}
194
195int
196lsi64854_detach(struct lsi64854_softc *sc)
197{
198
199 if (sc->setup)
200 bus_dmamap_unload(sc->sc_buffer_dmat, sc->sc_dmamap);
201 bus_dmamap_destroy(sc->sc_buffer_dmat, sc->sc_dmamap);
202 bus_dma_tag_destroy(sc->sc_buffer_dmat);
203
204 return (0);
205}
206
189/*
190 * DMAWAIT waits while condition is true
191 */
192#define DMAWAIT(SC, COND, MSG, DONTPANIC) do if (COND) { \
193 int count = 500000; \
194 while ((COND) && --count > 0) DELAY(1); \
195 if (count == 0) { \
196 printf("%s: line %d: CSR = 0x%lx\n", __FILE__, __LINE__, \

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260 * XXX is sync needed?
261 if (sc->sc_dmamap->dm_nsegs > 0)
262 bus_dmamap_unload(sc->sc_buffer_dmat, sc->sc_dmamap);
263 */
264
265 if (sc->sc_rev == DMAREV_HME)
266 L64854_SCSR(sc, csr | D_HW_RESET_FAS366);
267
207/*
208 * DMAWAIT waits while condition is true
209 */
210#define DMAWAIT(SC, COND, MSG, DONTPANIC) do if (COND) { \
211 int count = 500000; \
212 while ((COND) && --count > 0) DELAY(1); \
213 if (count == 0) { \
214 printf("%s: line %d: CSR = 0x%lx\n", __FILE__, __LINE__, \

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278 * XXX is sync needed?
279 if (sc->sc_dmamap->dm_nsegs > 0)
280 bus_dmamap_unload(sc->sc_buffer_dmat, sc->sc_dmamap);
281 */
282
283 if (sc->sc_rev == DMAREV_HME)
284 L64854_SCSR(sc, csr | D_HW_RESET_FAS366);
285
268
269 csr |= L64854_RESET; /* reset DMA */
270 L64854_SCSR(sc, csr);
271 DELAY(200); /* > 10 Sbus clocks(?) */
272
273 /*DMAWAIT1(sc); why was this here? */
274 csr = L64854_GCSR(sc);
275 csr &= ~L64854_RESET; /* de-assert reset line */
276 L64854_SCSR(sc, csr);

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485
486 if (resid == 0 && sc->sc_dmasize == 65536 &&
487 (nsc->sc_cfg2 & NCRCFG2_FE) == 0)
488 /* A transfer of 64K is encoded as `TCL=TCM=0' */
489 resid = 65536;
490 }
491
492 trans = sc->sc_dmasize - resid;
286 csr |= L64854_RESET; /* reset DMA */
287 L64854_SCSR(sc, csr);
288 DELAY(200); /* > 10 Sbus clocks(?) */
289
290 /*DMAWAIT1(sc); why was this here? */
291 csr = L64854_GCSR(sc);
292 csr &= ~L64854_RESET; /* de-assert reset line */
293 L64854_SCSR(sc, csr);

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502
503 if (resid == 0 && sc->sc_dmasize == 65536 &&
504 (nsc->sc_cfg2 & NCRCFG2_FE) == 0)
505 /* A transfer of 64K is encoded as `TCL=TCM=0' */
506 resid = 65536;
507 }
508
509 trans = sc->sc_dmasize - resid;
493 if (trans < 0) { /* transferred < 0 ? */
510 if (trans < 0) { /* transfered < 0? */
494#if 0
495 /*
496 * This situation can happen in perfectly normal operation
497 * if the ESP is reselected while using DMA to select
498 * another target. As such, don't print the warning.
499 */
500 device_printf(sc->sc_dev, "xfer (%d) > req (%d)\n", trans,
501 sc->sc_dmasize);

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561 if (dodrain) { /* XXX - is this necessary with D_DSBL_WRINVAL on? */
562 int i = 10;
563 csr |= E_DRAIN;
564 L64854_SCSR(sc, csr);
565 while (i-- > 0 && (L64854_GCSR(sc) & D_DRAINING))
566 DELAY(1);
567 }
568
511#if 0
512 /*
513 * This situation can happen in perfectly normal operation
514 * if the ESP is reselected while using DMA to select
515 * another target. As such, don't print the warning.
516 */
517 device_printf(sc->sc_dev, "xfer (%d) > req (%d)\n", trans,
518 sc->sc_dmasize);

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578 if (dodrain) { /* XXX - is this necessary with D_DSBL_WRINVAL on? */
579 int i = 10;
580 csr |= E_DRAIN;
581 L64854_SCSR(sc, csr);
582 while (i-- > 0 && (L64854_GCSR(sc) & D_DRAINING))
583 DELAY(1);
584 }
585
569 return (rv | (*sc->sc_intrchain)(sc->sc_intrchainarg));
586 (*sc->sc_intrchain)(sc->sc_intrchainarg);
587
588 return (rv);
570}
571
572static void
573lsi64854_map_pp(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
574{
575 struct lsi64854_softc *sc;
576
577 sc = (struct lsi64854_softc *)arg;

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590
591static void
592lsi64854_map_pp(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
593{
594 struct lsi64854_softc *sc;
595
596 sc = (struct lsi64854_softc *)arg;

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