edc_mca.c revision 1.9.4.3 1 1.9.4.3 jdolecek /* $NetBSD: edc_mca.c,v 1.9.4.3 2002/09/06 08:44:55 jdolecek Exp $ */
2 1.1 jdolecek
3 1.1 jdolecek /*
4 1.1 jdolecek * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 1.1 jdolecek *
6 1.1 jdolecek * This code is derived from software contributed to The NetBSD Foundation
7 1.1 jdolecek * by Jaromir Dolecek.
8 1.1 jdolecek *
9 1.1 jdolecek * Redistribution and use in source and binary forms, with or without
10 1.1 jdolecek * modification, are permitted provided that the following conditions
11 1.1 jdolecek * are met:
12 1.1 jdolecek * 1. Redistributions of source code must retain the above copyright
13 1.1 jdolecek * notice, this list of conditions and the following disclaimer.
14 1.1 jdolecek * 2. Redistributions in binary form must reproduce the above copyright
15 1.1 jdolecek * notice, this list of conditions and the following disclaimer in the
16 1.1 jdolecek * documentation and/or other materials provided with the distribution.
17 1.1 jdolecek * 3. All advertising materials mentioning features or use of this software
18 1.1 jdolecek * must display the following acknowledgement:
19 1.1 jdolecek * This product includes software developed by the NetBSD
20 1.1 jdolecek * Foundation, Inc. and its contributors.
21 1.1 jdolecek * 4. The name of the author may not be used to endorse or promote products
22 1.1 jdolecek * derived from this software without specific prior written permission.
23 1.1 jdolecek *
24 1.1 jdolecek * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
25 1.1 jdolecek * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
26 1.1 jdolecek * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27 1.1 jdolecek * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
28 1.1 jdolecek * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
29 1.1 jdolecek * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30 1.1 jdolecek * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31 1.1 jdolecek * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 1.1 jdolecek * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
33 1.1 jdolecek * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 1.1 jdolecek */
35 1.1 jdolecek
36 1.1 jdolecek /*
37 1.1 jdolecek * Driver for MCA ESDI controllers and disks conforming to IBM DASD
38 1.1 jdolecek * spec.
39 1.1 jdolecek *
40 1.1 jdolecek * The driver was written with DASD Storage Interface Specification
41 1.1 jdolecek * for MCA rev. 2.2 in hands, thanks to Scott Telford <st (at) epcc.ed.ac.uk>.
42 1.1 jdolecek *
43 1.1 jdolecek * TODO:
44 1.1 jdolecek * - improve error recovery
45 1.9.4.1 thorpej * Issue soft reset on error or timeout?
46 1.9.4.1 thorpej * - test with > 1 disk (this is supported by some controllers)
47 1.1 jdolecek * - test with > 1 ESDI controller in machine; shared interrupts
48 1.1 jdolecek * necessary for this to work should be supported - edc_intr() specifically
49 1.1 jdolecek * checks if the interrupt is for this controller
50 1.1 jdolecek */
51 1.1 jdolecek
52 1.9.4.1 thorpej #include <sys/cdefs.h>
53 1.9.4.3 jdolecek __KERNEL_RCSID(0, "$NetBSD: edc_mca.c,v 1.9.4.3 2002/09/06 08:44:55 jdolecek Exp $");
54 1.9.4.1 thorpej
55 1.1 jdolecek #include "rnd.h"
56 1.1 jdolecek
57 1.1 jdolecek #include <sys/param.h>
58 1.1 jdolecek #include <sys/systm.h>
59 1.1 jdolecek #include <sys/errno.h>
60 1.1 jdolecek #include <sys/device.h>
61 1.1 jdolecek #include <sys/malloc.h>
62 1.1 jdolecek #include <sys/endian.h>
63 1.1 jdolecek #include <sys/disklabel.h>
64 1.1 jdolecek #include <sys/disk.h>
65 1.1 jdolecek #include <sys/syslog.h>
66 1.1 jdolecek #include <sys/proc.h>
67 1.1 jdolecek #include <sys/vnode.h>
68 1.1 jdolecek #include <sys/kernel.h>
69 1.9.4.1 thorpej #include <sys/kthread.h>
70 1.1 jdolecek #if NRND > 0
71 1.1 jdolecek #include <sys/rnd.h>
72 1.1 jdolecek #endif
73 1.1 jdolecek
74 1.1 jdolecek #include <machine/bus.h>
75 1.1 jdolecek #include <machine/intr.h>
76 1.1 jdolecek
77 1.1 jdolecek #include <dev/mca/mcareg.h>
78 1.1 jdolecek #include <dev/mca/mcavar.h>
79 1.1 jdolecek #include <dev/mca/mcadevs.h>
80 1.1 jdolecek
81 1.1 jdolecek #include <dev/mca/edcreg.h>
82 1.1 jdolecek #include <dev/mca/edvar.h>
83 1.1 jdolecek #include <dev/mca/edcvar.h>
84 1.1 jdolecek
85 1.9 jdolecek #define EDC_ATTN_MAXTRIES 10000 /* How many times check for unbusy */
86 1.9.4.1 thorpej #define EDC_MAX_CMD_RES_LEN 8
87 1.9 jdolecek
88 1.1 jdolecek struct edc_mca_softc {
89 1.1 jdolecek struct device sc_dev;
90 1.1 jdolecek
91 1.1 jdolecek bus_space_tag_t sc_iot;
92 1.1 jdolecek bus_space_handle_t sc_ioh;
93 1.1 jdolecek
94 1.9.4.1 thorpej /* DMA related stuff */
95 1.1 jdolecek bus_dma_tag_t sc_dmat; /* DMA tag as passed by parent */
96 1.9.4.1 thorpej bus_dmamap_t sc_dmamap_xfer; /* transfer dma map */
97 1.1 jdolecek
98 1.1 jdolecek void *sc_ih; /* interrupt handle */
99 1.1 jdolecek
100 1.1 jdolecek int sc_flags;
101 1.1 jdolecek #define DASD_QUIET 0x01 /* don't dump cmd error info */
102 1.9.4.1 thorpej
103 1.9 jdolecek #define DASD_MAXDEVS 8
104 1.1 jdolecek struct ed_softc *sc_ed[DASD_MAXDEVS];
105 1.9.4.1 thorpej int sc_maxdevs; /* max number of disks attached to this
106 1.9.4.1 thorpej * controller */
107 1.9.4.1 thorpej
108 1.9.4.1 thorpej /* I/O results variables */
109 1.9.4.2 jdolecek volatile int sc_stat;
110 1.9.4.2 jdolecek #define STAT_START 0
111 1.9.4.2 jdolecek #define STAT_ERROR 1
112 1.9.4.2 jdolecek #define STAT_DONE 2
113 1.9.4.1 thorpej volatile int sc_resblk; /* residual block count */
114 1.9.4.2 jdolecek
115 1.9.4.2 jdolecek /* CMD status block - only set & used in edc_intr() */
116 1.9.4.2 jdolecek u_int16_t status_block[EDC_MAX_CMD_RES_LEN];
117 1.1 jdolecek };
118 1.1 jdolecek
119 1.1 jdolecek int edc_mca_probe __P((struct device *, struct cfdata *, void *));
120 1.1 jdolecek void edc_mca_attach __P((struct device *, struct device *, void *));
121 1.1 jdolecek
122 1.1 jdolecek struct cfattach edc_mca_ca = {
123 1.1 jdolecek sizeof(struct edc_mca_softc), edc_mca_probe, edc_mca_attach
124 1.1 jdolecek };
125 1.1 jdolecek
126 1.1 jdolecek static int edc_intr __P((void *));
127 1.9.4.1 thorpej static void edc_dump_status_block __P((struct edc_mca_softc *,
128 1.9.4.1 thorpej u_int16_t *, int));
129 1.1 jdolecek static int edc_do_attn __P((struct edc_mca_softc *, int, int, int));
130 1.9.4.2 jdolecek static void edc_cmd_wait __P((struct edc_mca_softc *, int, int));
131 1.9.4.1 thorpej static void edcworker __P((void *));
132 1.9.4.1 thorpej static void edc_spawn_worker __P((void *));
133 1.1 jdolecek
134 1.1 jdolecek int
135 1.1 jdolecek edc_mca_probe(parent, match, aux)
136 1.1 jdolecek struct device *parent;
137 1.1 jdolecek struct cfdata *match;
138 1.1 jdolecek void *aux;
139 1.1 jdolecek {
140 1.1 jdolecek struct mca_attach_args *ma = aux;
141 1.1 jdolecek
142 1.1 jdolecek switch (ma->ma_id) {
143 1.1 jdolecek case MCA_PRODUCT_IBM_ESDIC:
144 1.1 jdolecek case MCA_PRODUCT_IBM_ESDIC_IG:
145 1.1 jdolecek return (1);
146 1.1 jdolecek default:
147 1.1 jdolecek return (0);
148 1.1 jdolecek }
149 1.1 jdolecek }
150 1.1 jdolecek
151 1.1 jdolecek void
152 1.1 jdolecek edc_mca_attach(parent, self, aux)
153 1.1 jdolecek struct device *parent, *self;
154 1.1 jdolecek void *aux;
155 1.1 jdolecek {
156 1.1 jdolecek struct edc_mca_softc *sc = (void *) self;
157 1.1 jdolecek struct mca_attach_args *ma = aux;
158 1.9.4.1 thorpej struct ed_attach_args eda;
159 1.1 jdolecek int pos2, pos3, pos4;
160 1.1 jdolecek int irq, drq, iobase;
161 1.1 jdolecek const char *typestr;
162 1.9.4.1 thorpej int devno, error;
163 1.1 jdolecek
164 1.1 jdolecek pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
165 1.1 jdolecek pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3);
166 1.1 jdolecek pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4);
167 1.1 jdolecek
168 1.1 jdolecek /*
169 1.1 jdolecek * POS register 2: (adf pos0)
170 1.1 jdolecek *
171 1.1 jdolecek * 7 6 5 4 3 2 1 0
172 1.1 jdolecek * \ \____/ \ \__ enable: 0=adapter disabled, 1=adapter enabled
173 1.1 jdolecek * \ \ \___ Primary/Alternate Port Adresses:
174 1.1 jdolecek * \ \ 0=0x3510-3517 1=0x3518-0x351f
175 1.1 jdolecek * \ \_____ DMA Arbitration Level: 0101=5 0110=6 0111=7
176 1.1 jdolecek * \ 0000=0 0001=1 0011=3 0100=4
177 1.1 jdolecek * \_________ Fairness On/Off: 1=On 0=Off
178 1.1 jdolecek *
179 1.1 jdolecek * POS register 3: (adf pos1)
180 1.1 jdolecek *
181 1.1 jdolecek * 7 6 5 4 3 2 1 0
182 1.1 jdolecek * 0 0 \_/
183 1.1 jdolecek * \__________ DMA Burst Pacing Interval: 10=24ms 11=31ms
184 1.1 jdolecek * 01=16ms 00=Burst Disabled
185 1.1 jdolecek *
186 1.1 jdolecek * POS register 4: (adf pos2)
187 1.1 jdolecek *
188 1.1 jdolecek * 7 6 5 4 3 2 1 0
189 1.1 jdolecek * \_/ \__ DMA Pacing Control: 1=Disabled 0=Enabled
190 1.1 jdolecek * \____ Time to Release: 1X=6ms 01=3ms 00=Immediate
191 1.1 jdolecek *
192 1.1 jdolecek * IRQ is fixed to 14 (0x0e).
193 1.1 jdolecek */
194 1.1 jdolecek
195 1.1 jdolecek switch (ma->ma_id) {
196 1.1 jdolecek case MCA_PRODUCT_IBM_ESDIC:
197 1.1 jdolecek typestr = "IBM ESDI Fixed Disk Controller";
198 1.1 jdolecek break;
199 1.1 jdolecek case MCA_PRODUCT_IBM_ESDIC_IG:
200 1.1 jdolecek typestr = "IBM Integ. ESDI Fixed Disk & Controller";
201 1.1 jdolecek break;
202 1.1 jdolecek default:
203 1.9.4.1 thorpej /* never reached */ ;
204 1.1 jdolecek }
205 1.1 jdolecek
206 1.1 jdolecek irq = ESDIC_IRQ;
207 1.1 jdolecek iobase = (pos2 & IO_IS_ALT) ? ESDIC_IOALT : ESDIC_IOPRM;
208 1.1 jdolecek drq = (pos2 & DRQ_MASK) >> 2;
209 1.1 jdolecek
210 1.7 jdolecek printf(" slot %d irq %d drq %d: %s\n", ma->ma_slot+1,
211 1.7 jdolecek irq, drq, typestr);
212 1.6 jdolecek
213 1.1 jdolecek #ifdef DIAGNOSTIC
214 1.1 jdolecek /*
215 1.1 jdolecek * It's not strictly necessary to check this, machine configuration
216 1.1 jdolecek * utility uses only valid adresses.
217 1.1 jdolecek */
218 1.1 jdolecek if (drq == 2 || drq >= 8) {
219 1.1 jdolecek printf("%s: invalid DMA Arbitration Level %d\n",
220 1.1 jdolecek sc->sc_dev.dv_xname, drq);
221 1.1 jdolecek return;
222 1.1 jdolecek }
223 1.1 jdolecek #endif
224 1.1 jdolecek
225 1.7 jdolecek printf("%s: Fairness %s, Release %s, ",
226 1.1 jdolecek sc->sc_dev.dv_xname,
227 1.1 jdolecek (pos2 & FAIRNESS_ENABLE) ? "On" : "Off",
228 1.1 jdolecek (pos4 & RELEASE_1) ? "6ms"
229 1.7 jdolecek : ((pos4 & RELEASE_2) ? "3ms" : "Immediate")
230 1.7 jdolecek );
231 1.1 jdolecek if ((pos4 & PACING_CTRL_DISABLE) == 0) {
232 1.1 jdolecek static const char * const pacint[] =
233 1.1 jdolecek { "disabled", "16ms", "24ms", "31ms"};
234 1.1 jdolecek printf("DMA burst pacing interval %s\n",
235 1.1 jdolecek pacint[(pos3 & PACING_INT_MASK) >> 4]);
236 1.1 jdolecek } else
237 1.1 jdolecek printf("DMA pacing control disabled\n");
238 1.1 jdolecek
239 1.1 jdolecek sc->sc_iot = ma->ma_iot;
240 1.1 jdolecek
241 1.1 jdolecek if (bus_space_map(sc->sc_iot, iobase,
242 1.1 jdolecek ESDIC_REG_NPORTS, 0, &sc->sc_ioh)) {
243 1.1 jdolecek printf("%s: couldn't map registers\n",
244 1.1 jdolecek sc->sc_dev.dv_xname);
245 1.1 jdolecek return;
246 1.1 jdolecek }
247 1.1 jdolecek
248 1.1 jdolecek sc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_BIO, edc_intr, sc);
249 1.1 jdolecek if (sc->sc_ih == NULL) {
250 1.1 jdolecek printf("%s: couldn't establish interrupt handler\n",
251 1.1 jdolecek sc->sc_dev.dv_xname);
252 1.1 jdolecek return;
253 1.1 jdolecek }
254 1.1 jdolecek
255 1.9.4.1 thorpej /* Create a MCA DMA map, used for data transfer */
256 1.9.4.1 thorpej sc->sc_dmat = ma->ma_dmat;
257 1.9.4.1 thorpej if ((error = mca_dmamap_create(sc->sc_dmat, MAXPHYS,
258 1.9.4.1 thorpej BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW | MCABUS_DMA_16BIT,
259 1.9.4.1 thorpej &sc->sc_dmamap_xfer, drq)) != 0){
260 1.9.4.1 thorpej printf("%s: couldn't create DMA map - error %d\n",
261 1.9.4.1 thorpej sc->sc_dev.dv_xname, error);
262 1.9.4.1 thorpej return;
263 1.9.4.1 thorpej }
264 1.9.4.1 thorpej
265 1.1 jdolecek /*
266 1.1 jdolecek * Integrated ESDI controller supports only one disk, other
267 1.1 jdolecek * controllers support two disks.
268 1.1 jdolecek */
269 1.1 jdolecek if (ma->ma_id == MCA_PRODUCT_IBM_ESDIC_IG)
270 1.9.4.1 thorpej sc->sc_maxdevs = 1;
271 1.1 jdolecek else
272 1.9.4.1 thorpej sc->sc_maxdevs = 2;
273 1.1 jdolecek
274 1.9 jdolecek /*
275 1.9 jdolecek * Reset controller and attach individual disks. ed attach routine
276 1.9 jdolecek * uses polling so that this works with interrupts disabled.
277 1.9 jdolecek */
278 1.1 jdolecek
279 1.1 jdolecek /* Do a reset to ensure sane state after warm boot. */
280 1.1 jdolecek if (bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR) & BSR_BUSY) {
281 1.1 jdolecek /* hard reset */
282 1.1 jdolecek printf("%s: controller busy, performing hardware reset ...\n",
283 1.1 jdolecek sc->sc_dev.dv_xname);
284 1.1 jdolecek bus_space_write_1(sc->sc_iot, sc->sc_ioh, BCR,
285 1.1 jdolecek BCR_INT_ENABLE|BCR_RESET);
286 1.1 jdolecek } else {
287 1.1 jdolecek /* "SOFT" reset */
288 1.1 jdolecek edc_do_attn(sc, ATN_RESET_ATTACHMENT, DASD_DEVNO_CONTROLLER,0);
289 1.1 jdolecek }
290 1.1 jdolecek
291 1.9 jdolecek /*
292 1.9.4.2 jdolecek * Since interrupts are disabled, it's necessary
293 1.9 jdolecek * to detect the interrupt request and call edc_intr()
294 1.9 jdolecek * explicitly. See also edc_run_cmd().
295 1.9 jdolecek */
296 1.9 jdolecek while(bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR) & BSR_BUSY) {
297 1.9 jdolecek if (bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR) & BSR_INTR)
298 1.9 jdolecek edc_intr(sc);
299 1.9 jdolecek
300 1.9 jdolecek delay(100);
301 1.9 jdolecek }
302 1.1 jdolecek
303 1.9.4.1 thorpej /* be quiet during probes */
304 1.1 jdolecek sc->sc_flags |= DASD_QUIET;
305 1.1 jdolecek
306 1.1 jdolecek /* check for attached disks */
307 1.9.4.1 thorpej for(devno=0; devno < sc->sc_maxdevs; devno++) {
308 1.9.4.1 thorpej eda.edc_drive = devno;
309 1.9.4.1 thorpej sc->sc_ed[devno] =
310 1.9.4.1 thorpej (void *) config_found_sm(self, &eda, NULL, NULL);
311 1.9.4.1 thorpej
312 1.9.4.1 thorpej /* If initialization did not succeed, NULL the pointer. */
313 1.9.4.1 thorpej if (sc->sc_ed[devno]
314 1.9.4.1 thorpej && (sc->sc_ed[devno]->sc_flags & EDF_INIT) == 0)
315 1.9.4.1 thorpej sc->sc_ed[devno] = NULL;
316 1.1 jdolecek }
317 1.1 jdolecek
318 1.1 jdolecek /* enable full error dumps again */
319 1.1 jdolecek sc->sc_flags &= ~DASD_QUIET;
320 1.1 jdolecek
321 1.9 jdolecek /*
322 1.9 jdolecek * Check if there are any disks attached. If not, disestablish
323 1.9 jdolecek * the interrupt.
324 1.9 jdolecek */
325 1.9.4.1 thorpej for(devno=0; devno < sc->sc_maxdevs; devno++) {
326 1.9.4.1 thorpej if (sc->sc_ed[devno])
327 1.9 jdolecek break;
328 1.9 jdolecek }
329 1.9.4.1 thorpej
330 1.9.4.1 thorpej if (devno == sc->sc_maxdevs) {
331 1.9 jdolecek printf("%s: disabling controller (no drives attached)\n",
332 1.9 jdolecek sc->sc_dev.dv_xname);
333 1.9 jdolecek mca_intr_disestablish(ma->ma_mc, sc->sc_ih);
334 1.9.4.1 thorpej return;
335 1.9 jdolecek }
336 1.9.4.1 thorpej
337 1.9.4.1 thorpej /*
338 1.9.4.1 thorpej * Run the worker thread.
339 1.9.4.1 thorpej */
340 1.9.4.1 thorpej config_pending_incr();
341 1.9.4.1 thorpej kthread_create(edc_spawn_worker, (void *) sc);
342 1.1 jdolecek }
343 1.1 jdolecek
344 1.1 jdolecek void
345 1.9.4.1 thorpej edc_add_disk(sc, ed)
346 1.1 jdolecek struct edc_mca_softc *sc;
347 1.1 jdolecek struct ed_softc *ed;
348 1.1 jdolecek {
349 1.9.4.1 thorpej sc->sc_ed[ed->sc_devno] = ed;
350 1.1 jdolecek }
351 1.1 jdolecek
352 1.1 jdolecek static int
353 1.1 jdolecek edc_intr(arg)
354 1.1 jdolecek void *arg;
355 1.1 jdolecek {
356 1.1 jdolecek struct edc_mca_softc *sc = arg;
357 1.1 jdolecek u_int8_t isr, intr_id;
358 1.1 jdolecek u_int16_t sifr;
359 1.9.4.2 jdolecek int cmd=-1, devno;
360 1.1 jdolecek
361 1.1 jdolecek /*
362 1.1 jdolecek * Check if the interrupt was for us.
363 1.1 jdolecek */
364 1.1 jdolecek if ((bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR) & BSR_INTR) == 0)
365 1.1 jdolecek return (0);
366 1.1 jdolecek
367 1.1 jdolecek /*
368 1.1 jdolecek * Read ISR to find out interrupt type. This also clears the interrupt
369 1.1 jdolecek * condition and BSR_INTR flag. Accordings to docs interrupt ID of 0, 2
370 1.1 jdolecek * and 4 are reserved and not used.
371 1.1 jdolecek */
372 1.1 jdolecek isr = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ISR);
373 1.1 jdolecek intr_id = isr & ISR_INTR_ID_MASK;
374 1.1 jdolecek
375 1.9.4.2 jdolecek #ifdef EDC_DEBUG
376 1.1 jdolecek if (intr_id == 0 || intr_id == 2 || intr_id == 4) {
377 1.1 jdolecek printf("%s: bogus interrupt id %d\n", sc->sc_dev.dv_xname,
378 1.1 jdolecek (int) intr_id);
379 1.1 jdolecek return (0);
380 1.1 jdolecek }
381 1.1 jdolecek #endif
382 1.1 jdolecek
383 1.1 jdolecek /* Get number of device whose intr this was */
384 1.1 jdolecek devno = (isr & 0xe0) >> 5;
385 1.1 jdolecek
386 1.1 jdolecek /*
387 1.1 jdolecek * Get Status block. Higher byte always says how long the status
388 1.1 jdolecek * block is, rest is device number and command code.
389 1.1 jdolecek * Check the status block length against our supported maximum length
390 1.1 jdolecek * and fetch the data.
391 1.1 jdolecek */
392 1.9 jdolecek if (bus_space_read_1(sc->sc_iot, sc->sc_ioh,BSR) & BSR_SIFR_FULL) {
393 1.1 jdolecek size_t len;
394 1.1 jdolecek int i;
395 1.1 jdolecek
396 1.1 jdolecek sifr = le16toh(bus_space_read_2(sc->sc_iot, sc->sc_ioh, SIFR));
397 1.1 jdolecek len = (sifr & 0xff00) >> 8;
398 1.9 jdolecek #ifdef DEBUG
399 1.9.4.1 thorpej if (len > EDC_MAX_CMD_RES_LEN)
400 1.9 jdolecek panic("%s: maximum Status Length exceeded: %d > %d",
401 1.1 jdolecek sc->sc_dev.dv_xname,
402 1.9.4.1 thorpej len, EDC_MAX_CMD_RES_LEN);
403 1.9 jdolecek #endif
404 1.1 jdolecek
405 1.1 jdolecek /* Get command code */
406 1.1 jdolecek cmd = sifr & SIFR_CMD_MASK;
407 1.1 jdolecek
408 1.1 jdolecek /* Read whole status block */
409 1.9.4.2 jdolecek sc->status_block[0] = sifr;
410 1.1 jdolecek for(i=1; i < len; i++) {
411 1.1 jdolecek while((bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR)
412 1.1 jdolecek & BSR_SIFR_FULL) == 0)
413 1.9.4.2 jdolecek ;
414 1.1 jdolecek
415 1.9.4.2 jdolecek sc->status_block[i] = le16toh(
416 1.1 jdolecek bus_space_read_2(sc->sc_iot, sc->sc_ioh, SIFR));
417 1.1 jdolecek }
418 1.9.4.2 jdolecek /* zero out rest */
419 1.9.4.2 jdolecek if (i < EDC_MAX_CMD_RES_LEN) {
420 1.9.4.2 jdolecek memset(&sc->status_block[i], 0,
421 1.9.4.2 jdolecek (EDC_MAX_CMD_RES_LEN-i)*sizeof(u_int16_t));
422 1.9.4.2 jdolecek }
423 1.1 jdolecek }
424 1.1 jdolecek
425 1.1 jdolecek switch (intr_id) {
426 1.1 jdolecek case ISR_DATA_TRANSFER_RDY:
427 1.1 jdolecek /*
428 1.9.4.1 thorpej * Ready to do DMA. The DMA controller has already been
429 1.9.4.1 thorpej * setup, now just kick disk controller to do the transfer.
430 1.1 jdolecek */
431 1.9.4.1 thorpej bus_space_write_1(sc->sc_iot, sc->sc_ioh, BCR,
432 1.9.4.1 thorpej BCR_INT_ENABLE|BCR_DMA_ENABLE);
433 1.1 jdolecek break;
434 1.9.4.2 jdolecek
435 1.1 jdolecek case ISR_COMPLETED:
436 1.1 jdolecek case ISR_COMPLETED_WITH_ECC:
437 1.1 jdolecek case ISR_COMPLETED_RETRIES:
438 1.1 jdolecek case ISR_COMPLETED_WARNING:
439 1.9.4.1 thorpej /*
440 1.9.4.1 thorpej * Copy device config data if appropriate. sc->sc_ed[]
441 1.9.4.1 thorpej * entry might be NULL during probe.
442 1.9.4.1 thorpej */
443 1.9.4.1 thorpej if (cmd == CMD_GET_DEV_CONF && sc->sc_ed[devno]) {
444 1.9.4.2 jdolecek memcpy(sc->sc_ed[devno]->sense_data, sc->status_block,
445 1.9.4.1 thorpej sizeof(sc->sc_ed[devno]->sense_data));
446 1.9.4.1 thorpej }
447 1.9.4.1 thorpej
448 1.9.4.2 jdolecek sc->sc_stat = STAT_DONE;
449 1.1 jdolecek break;
450 1.9.4.2 jdolecek
451 1.1 jdolecek case ISR_RESET_COMPLETED:
452 1.1 jdolecek case ISR_ABORT_COMPLETED:
453 1.1 jdolecek /* nothing to do */
454 1.1 jdolecek break;
455 1.9.4.2 jdolecek
456 1.9.4.2 jdolecek case ISR_ATTN_ERROR:
457 1.9.4.2 jdolecek /*
458 1.9.4.2 jdolecek * Basically, this means driver bug or something seriously
459 1.9.4.2 jdolecek * hosed. panic rather than extending the lossage.
460 1.9.4.2 jdolecek * No status block available, so no further info.
461 1.9.4.2 jdolecek */
462 1.9.4.2 jdolecek panic("%s: dev %d: attention error",
463 1.9.4.2 jdolecek sc->sc_dev.dv_xname,
464 1.9.4.2 jdolecek devno);
465 1.9.4.2 jdolecek /* NOTREACHED */
466 1.9.4.2 jdolecek break;
467 1.9.4.2 jdolecek
468 1.1 jdolecek default:
469 1.1 jdolecek if ((sc->sc_flags & DASD_QUIET) == 0)
470 1.9.4.2 jdolecek edc_dump_status_block(sc, sc->status_block, intr_id);
471 1.1 jdolecek
472 1.9.4.2 jdolecek sc->sc_stat = STAT_ERROR;
473 1.1 jdolecek break;
474 1.1 jdolecek }
475 1.1 jdolecek
476 1.1 jdolecek /*
477 1.1 jdolecek * Unless the interrupt is for Data Transfer Ready or
478 1.1 jdolecek * Attention Error, finish by assertion EOI. This makes
479 1.1 jdolecek * attachment aware the interrupt is processed and system
480 1.1 jdolecek * is ready to accept another one.
481 1.1 jdolecek */
482 1.1 jdolecek if (intr_id != ISR_DATA_TRANSFER_RDY && intr_id != ISR_ATTN_ERROR)
483 1.1 jdolecek edc_do_attn(sc, ATN_END_INT, devno, intr_id);
484 1.1 jdolecek
485 1.1 jdolecek /* If Read or Write Data, wakeup worker thread to finish it */
486 1.9.4.2 jdolecek if (intr_id != ISR_DATA_TRANSFER_RDY) {
487 1.9.4.2 jdolecek if (cmd == CMD_READ_DATA || cmd == CMD_WRITE_DATA)
488 1.9.4.2 jdolecek sc->sc_resblk = sc->status_block[SB_RESBLKCNT_IDX];
489 1.9.4.1 thorpej wakeup_one(sc);
490 1.1 jdolecek }
491 1.1 jdolecek
492 1.1 jdolecek return (1);
493 1.1 jdolecek }
494 1.1 jdolecek
495 1.1 jdolecek /*
496 1.1 jdolecek * This follows the exact order for Attention Request as
497 1.1 jdolecek * written in DASD Storage Interface Specification MC (Rev 2.2).
498 1.1 jdolecek */
499 1.1 jdolecek static int
500 1.1 jdolecek edc_do_attn(sc, attn_type, devno, intr_id)
501 1.1 jdolecek struct edc_mca_softc *sc;
502 1.1 jdolecek int attn_type, devno, intr_id;
503 1.1 jdolecek {
504 1.1 jdolecek int tries;
505 1.1 jdolecek
506 1.1 jdolecek /* 1. Disable interrupts in BCR. */
507 1.1 jdolecek bus_space_write_1(sc->sc_iot, sc->sc_ioh, BCR, 0);
508 1.1 jdolecek
509 1.9 jdolecek /*
510 1.9 jdolecek * 2. Assure NOT BUSY and NO INTERRUPT PENDING, unless acknowledging
511 1.9 jdolecek * a RESET COMPLETED interrupt.
512 1.9 jdolecek */
513 1.1 jdolecek if (intr_id != ISR_RESET_COMPLETED) {
514 1.9.4.2 jdolecek #ifdef EDC_DEBUG
515 1.9.4.2 jdolecek if (attn_type == ATN_CMD_REQ
516 1.9.4.2 jdolecek && (bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR)
517 1.9.4.2 jdolecek & BSR_INT_PENDING))
518 1.9.4.2 jdolecek panic("%s: edc int pending", sc->sc_dev.dv_xname);
519 1.9.4.2 jdolecek #endif
520 1.9.4.2 jdolecek
521 1.9 jdolecek for(tries=1; tries < EDC_ATTN_MAXTRIES; tries++) {
522 1.1 jdolecek if ((bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR)
523 1.9.4.2 jdolecek & BSR_BUSY) == 0)
524 1.1 jdolecek break;
525 1.1 jdolecek }
526 1.1 jdolecek
527 1.9 jdolecek if (tries == EDC_ATTN_MAXTRIES) {
528 1.1 jdolecek printf("%s: edc_do_attn: timeout waiting for attachment to become available\n",
529 1.9 jdolecek sc->sc_ed[devno]->sc_dev.dv_xname);
530 1.9.4.2 jdolecek return (EIO);
531 1.1 jdolecek }
532 1.1 jdolecek }
533 1.1 jdolecek
534 1.1 jdolecek /*
535 1.1 jdolecek * 3. Write proper DEVICE NUMBER and Attention number to ATN.
536 1.1 jdolecek */
537 1.9.4.2 jdolecek bus_space_write_1(sc->sc_iot, sc->sc_ioh, ATN, attn_type | (devno<<5));
538 1.1 jdolecek
539 1.1 jdolecek /*
540 1.1 jdolecek * 4. Enable interrupts via BCR.
541 1.1 jdolecek */
542 1.1 jdolecek bus_space_write_1(sc->sc_iot, sc->sc_ioh, BCR, BCR_INT_ENABLE);
543 1.1 jdolecek
544 1.1 jdolecek return (0);
545 1.1 jdolecek }
546 1.1 jdolecek
547 1.1 jdolecek /*
548 1.1 jdolecek * Wait until command is processed, timeout after 'secs' seconds.
549 1.1 jdolecek * We use mono_time, since we don't need actual RTC, just time
550 1.1 jdolecek * interval.
551 1.1 jdolecek */
552 1.9.4.2 jdolecek static void
553 1.9.4.1 thorpej edc_cmd_wait(sc, secs, poll)
554 1.1 jdolecek struct edc_mca_softc *sc;
555 1.9.4.1 thorpej int secs, poll;
556 1.1 jdolecek {
557 1.9.4.2 jdolecek int val;
558 1.1 jdolecek
559 1.9.4.1 thorpej if (!poll) {
560 1.9.4.2 jdolecek int s;
561 1.9.4.1 thorpej
562 1.9.4.1 thorpej /* Not polling, can sleep. Sleep until we are awakened,
563 1.9.4.1 thorpej * but maximum secs seconds.
564 1.9.4.1 thorpej */
565 1.9.4.2 jdolecek s = splbio();
566 1.9.4.2 jdolecek if (sc->sc_stat != STAT_DONE)
567 1.9.4.2 jdolecek (void) tsleep(sc, PRIBIO, "edcwcmd", secs * hz);
568 1.9.4.2 jdolecek splx(s);
569 1.9.4.1 thorpej }
570 1.9.4.1 thorpej
571 1.9.4.2 jdolecek /* Wait until the command is completely finished */
572 1.9.4.2 jdolecek while((val = bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR))
573 1.9.4.2 jdolecek & BSR_CMD_INPROGRESS) {
574 1.9.4.2 jdolecek if (poll && (val & BSR_INTR))
575 1.9.4.2 jdolecek edc_intr(sc);
576 1.1 jdolecek }
577 1.1 jdolecek }
578 1.9.4.2 jdolecek
579 1.9.4.2 jdolecek /*
580 1.9.4.2 jdolecek * Command controller to execute specified command on a device.
581 1.9.4.2 jdolecek */
582 1.1 jdolecek int
583 1.9.4.1 thorpej edc_run_cmd(sc, cmd, devno, cmd_args, cmd_len, poll)
584 1.1 jdolecek struct edc_mca_softc *sc;
585 1.1 jdolecek int cmd;
586 1.1 jdolecek int devno;
587 1.1 jdolecek u_int16_t cmd_args[];
588 1.9.4.1 thorpej int cmd_len, poll;
589 1.1 jdolecek {
590 1.9 jdolecek int i, error, tries;
591 1.1 jdolecek u_int16_t cmd0;
592 1.1 jdolecek
593 1.9.4.2 jdolecek sc->sc_stat = STAT_START;
594 1.1 jdolecek
595 1.1 jdolecek /* Do Attention Request for Command Request. */
596 1.1 jdolecek if ((error = edc_do_attn(sc, ATN_CMD_REQ, devno, 0)))
597 1.1 jdolecek return (error);
598 1.1 jdolecek
599 1.1 jdolecek /*
600 1.1 jdolecek * Construct the command. The bits are like this:
601 1.1 jdolecek *
602 1.1 jdolecek * 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
603 1.1 jdolecek * \_/ 0 0 1 0 \__/ \_____/
604 1.1 jdolecek * \ \__________/ \ \_ Command Code (see CMD_*)
605 1.1 jdolecek * \ \ \__ Device: 0 common, 7 controller
606 1.1 jdolecek * \ \__ Options: reserved, bit 10=cache bypass bit
607 1.1 jdolecek * \_ Type: 00=2B, 01=4B, 10 and 11 reserved
608 1.1 jdolecek *
609 1.1 jdolecek * We always use device 0 or 1, so difference is made only by Command
610 1.1 jdolecek * Code, Command Options and command length.
611 1.1 jdolecek */
612 1.1 jdolecek cmd0 = ((cmd_len == 4) ? (CIFR_LONG_CMD) : 0)
613 1.1 jdolecek | (devno << 5)
614 1.1 jdolecek | (cmd_args[0] << 8) | cmd;
615 1.1 jdolecek cmd_args[0] = cmd0;
616 1.1 jdolecek
617 1.1 jdolecek /*
618 1.1 jdolecek * Write word of CMD to the CIFR. This sets "Command
619 1.1 jdolecek * Interface Register Full (CMD IN)" in BSR. Once the attachment
620 1.9.4.1 thorpej * detects it, it reads the word and clears CMD IN. This all should
621 1.9.4.2 jdolecek * be quite fast, so don't sleep in !poll case neither.
622 1.1 jdolecek */
623 1.1 jdolecek for(i=0; i < cmd_len; i++) {
624 1.1 jdolecek bus_space_write_2(sc->sc_iot, sc->sc_ioh, CIFR,
625 1.1 jdolecek htole16(cmd_args[i]));
626 1.1 jdolecek
627 1.9.4.2 jdolecek /* Wait until CMD IN is cleared. */
628 1.9 jdolecek tries = 0;
629 1.9.4.1 thorpej for(; (bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR)
630 1.9.4.2 jdolecek & BSR_CIFR_FULL) && tries < 10000 ; tries++)
631 1.9 jdolecek delay(poll ? 1000 : 1);
632 1.9.4.2 jdolecek ;
633 1.1 jdolecek
634 1.9.4.2 jdolecek if (tries == 10000
635 1.9.4.2 jdolecek && bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR)
636 1.9.4.2 jdolecek & BSR_CIFR_FULL) {
637 1.9.4.1 thorpej printf("%s: device too slow to accept command %d\n",
638 1.9.4.1 thorpej sc->sc_dev.dv_xname, cmd);
639 1.9.4.2 jdolecek return (EIO);
640 1.9.4.1 thorpej }
641 1.1 jdolecek }
642 1.1 jdolecek
643 1.1 jdolecek /* Wait for command to complete, but maximum 15 seconds. */
644 1.9.4.2 jdolecek edc_cmd_wait(sc, 15, poll);
645 1.1 jdolecek
646 1.9.4.2 jdolecek return ((sc->sc_stat != STAT_DONE) ? EIO : 0);
647 1.1 jdolecek }
648 1.1 jdolecek
649 1.9.4.1 thorpej #ifdef EDC_DEBUG
650 1.1 jdolecek static const char * const edc_commands[] = {
651 1.1 jdolecek "Invalid Command",
652 1.1 jdolecek "Read Data",
653 1.1 jdolecek "Write Data",
654 1.1 jdolecek "Read Verify",
655 1.1 jdolecek "Write with Verify",
656 1.1 jdolecek "Seek",
657 1.1 jdolecek "Park Head",
658 1.1 jdolecek "Get Command Complete Status",
659 1.1 jdolecek "Get Device Status",
660 1.1 jdolecek "Get Device Configuration",
661 1.1 jdolecek "Get POS Information",
662 1.1 jdolecek "Translate RBA",
663 1.1 jdolecek "Write Attachment Buffer",
664 1.1 jdolecek "Read Attachment Buffer",
665 1.1 jdolecek "Run Diagnostic Test",
666 1.1 jdolecek "Get Diagnostic Status Block",
667 1.1 jdolecek "Get MFG Header",
668 1.1 jdolecek "Format Unit",
669 1.1 jdolecek "Format Prepare",
670 1.1 jdolecek "Set MAX RBA",
671 1.1 jdolecek "Set Power Saving Mode",
672 1.1 jdolecek "Power Conservation Command",
673 1.1 jdolecek };
674 1.1 jdolecek
675 1.1 jdolecek static const char * const edc_cmd_status[256] = {
676 1.1 jdolecek "Reserved",
677 1.1 jdolecek "Command completed successfully",
678 1.1 jdolecek "Reserved",
679 1.1 jdolecek "Command completed successfully with ECC applied",
680 1.1 jdolecek "Reserved",
681 1.1 jdolecek "Command completed successfully with retries",
682 1.1 jdolecek "Format Command partially completed", /* Status available */
683 1.1 jdolecek "Command completed successfully with ECC and retries",
684 1.1 jdolecek "Command completed with Warning", /* Command Error is available */
685 1.1 jdolecek "Aborted",
686 1.1 jdolecek "Reset completed",
687 1.1 jdolecek "Data Transfer Ready", /* No Status Block available */
688 1.1 jdolecek "Command terminated with failure", /* Device Error is available */
689 1.1 jdolecek "DMA Error", /* Retry entire command as recovery */
690 1.1 jdolecek "Command Block Error",
691 1.1 jdolecek "Attention Error (Illegal Attention Code)",
692 1.1 jdolecek /* 0x14 - 0xff reserved */
693 1.1 jdolecek };
694 1.1 jdolecek
695 1.1 jdolecek static const char * const edc_cmd_error[256] = {
696 1.1 jdolecek "No Error",
697 1.1 jdolecek "Invalid parameter in the command block",
698 1.1 jdolecek "Reserved",
699 1.1 jdolecek "Command not supported",
700 1.1 jdolecek "Command Aborted per request",
701 1.1 jdolecek "Reserved",
702 1.1 jdolecek "Command rejected", /* Attachment diagnostic failure */
703 1.1 jdolecek "Format Rejected", /* Prepare Format command is required */
704 1.1 jdolecek "Format Error (Primary Map is not readable)",
705 1.1 jdolecek "Format Error (Secondary map is not readable)",
706 1.1 jdolecek "Format Error (Diagnostic Failure)",
707 1.1 jdolecek "Format Warning (Secondary Map Overflow)",
708 1.1 jdolecek "Reserved"
709 1.1 jdolecek "Format Error (Host Checksum Error)",
710 1.1 jdolecek "Reserved",
711 1.1 jdolecek "Format Warning (Push table overflow)",
712 1.1 jdolecek "Format Warning (More pushes than allowed)",
713 1.1 jdolecek "Reserved",
714 1.1 jdolecek "Format Warning (Error during verifying)",
715 1.1 jdolecek "Invalid device number for the command",
716 1.1 jdolecek /* 0x14-0xff reserved */
717 1.1 jdolecek };
718 1.1 jdolecek
719 1.1 jdolecek static const char * const edc_dev_errors[] = {
720 1.1 jdolecek "No Error",
721 1.1 jdolecek "Seek Fault", /* Device report */
722 1.1 jdolecek "Interface Fault (Parity, Attn, or Cmd Complete Error)",
723 1.1 jdolecek "Block not found (ID not found)",
724 1.1 jdolecek "Block not found (AM not found)",
725 1.1 jdolecek "Data ECC Error (hard error)",
726 1.1 jdolecek "ID CRC Error",
727 1.1 jdolecek "RBA Out of Range",
728 1.1 jdolecek "Reserved",
729 1.1 jdolecek "Defective Block",
730 1.1 jdolecek "Reserved",
731 1.1 jdolecek "Selection Error",
732 1.1 jdolecek "Reserved",
733 1.1 jdolecek "Write Fault",
734 1.1 jdolecek "No index or sector pulse",
735 1.1 jdolecek "Device Not Ready",
736 1.1 jdolecek "Seek Error", /* Attachment report */
737 1.1 jdolecek "Bad Format",
738 1.1 jdolecek "Volume Overflow",
739 1.1 jdolecek "No Data AM Found",
740 1.8 simonb "Block not found (No ID AM or ID CRC error occurred)",
741 1.1 jdolecek "Reserved",
742 1.1 jdolecek "Reserved",
743 1.1 jdolecek "No ID found on track (ID search)",
744 1.1 jdolecek /* 0x19 - 0xff reserved */
745 1.1 jdolecek };
746 1.9.4.1 thorpej #endif /* EDC_DEBUG */
747 1.1 jdolecek
748 1.1 jdolecek static void
749 1.9.4.1 thorpej edc_dump_status_block(sc, status_block, intr_id)
750 1.1 jdolecek struct edc_mca_softc *sc;
751 1.9.4.1 thorpej u_int16_t *status_block;
752 1.9.4.1 thorpej int intr_id;
753 1.1 jdolecek {
754 1.9.4.1 thorpej #ifdef EDC_DEBUG
755 1.9.4.2 jdolecek printf("%s: Command: %s, Status: %s (intr %d)\n",
756 1.9.4.1 thorpej sc->sc_dev.dv_xname,
757 1.9.4.1 thorpej edc_commands[status_block[0] & 0x1f],
758 1.9.4.2 jdolecek edc_cmd_status[SB_GET_CMD_STATUS(status_block)],
759 1.9.4.2 jdolecek intr_id
760 1.1 jdolecek );
761 1.9.4.1 thorpej #else
762 1.9.4.2 jdolecek printf("%s: Command: %d, Status: %d (intr %d)\n",
763 1.9.4.1 thorpej sc->sc_dev.dv_xname,
764 1.9.4.1 thorpej status_block[0] & 0x1f,
765 1.9.4.2 jdolecek SB_GET_CMD_STATUS(status_block),
766 1.9.4.2 jdolecek intr_id
767 1.9.4.2 jdolecek );
768 1.9.4.1 thorpej #endif
769 1.3 jdolecek printf("%s: # left blocks: %u, last processed RBA: %u\n",
770 1.9.4.1 thorpej sc->sc_dev.dv_xname,
771 1.9.4.1 thorpej status_block[SB_RESBLKCNT_IDX],
772 1.9.4.1 thorpej (status_block[5] << 16) | status_block[4]);
773 1.1 jdolecek
774 1.4 jdolecek if (intr_id == ISR_COMPLETED_WARNING) {
775 1.9.4.1 thorpej #ifdef EDC_DEBUG
776 1.1 jdolecek printf("%s: Command Error Code: %s\n",
777 1.9.4.1 thorpej sc->sc_dev.dv_xname,
778 1.9.4.1 thorpej edc_cmd_error[status_block[1] & 0xff]);
779 1.9.4.1 thorpej #else
780 1.9.4.1 thorpej printf("%s: Command Error Code: %d\n",
781 1.9.4.1 thorpej sc->sc_dev.dv_xname,
782 1.9.4.1 thorpej status_block[1] & 0xff);
783 1.9.4.1 thorpej #endif
784 1.1 jdolecek }
785 1.1 jdolecek
786 1.4 jdolecek if (intr_id == ISR_CMD_FAILED) {
787 1.9.4.1 thorpej #ifdef EDC_DEBUG
788 1.4 jdolecek char buf[100];
789 1.4 jdolecek
790 1.4 jdolecek printf("%s: Device Error Code: %s\n",
791 1.9.4.1 thorpej sc->sc_dev.dv_xname,
792 1.9.4.1 thorpej edc_dev_errors[status_block[2] & 0xff]);
793 1.9.4.1 thorpej bitmask_snprintf((status_block[2] & 0xff00) >> 8,
794 1.4 jdolecek "\20"
795 1.4 jdolecek "\01SeekOrCmdComplete"
796 1.4 jdolecek "\02Track0Flag"
797 1.4 jdolecek "\03WriteFault"
798 1.4 jdolecek "\04Selected"
799 1.4 jdolecek "\05Ready"
800 1.4 jdolecek "\06Reserved0"
801 1.4 jdolecek "\07STANDBY"
802 1.4 jdolecek "\010Reserved0",
803 1.4 jdolecek buf, sizeof(buf));
804 1.4 jdolecek printf("%s: Device Status: %s\n",
805 1.9.4.1 thorpej sc->sc_dev.dv_xname, buf);
806 1.9.4.1 thorpej #else
807 1.9.4.1 thorpej printf("%s: Device Error Code: %d, Device Status: %d\n",
808 1.9.4.1 thorpej sc->sc_dev.dv_xname,
809 1.9.4.1 thorpej status_block[2] & 0xff,
810 1.9.4.1 thorpej (status_block[2] & 0xff00) >> 8);
811 1.9.4.1 thorpej #endif
812 1.9.4.1 thorpej }
813 1.9.4.1 thorpej }
814 1.9.4.1 thorpej
815 1.9.4.1 thorpej static void
816 1.9.4.1 thorpej edc_spawn_worker(arg)
817 1.9.4.1 thorpej void *arg;
818 1.9.4.1 thorpej {
819 1.9.4.1 thorpej struct edc_mca_softc *sc = (struct edc_mca_softc *) arg;
820 1.9.4.1 thorpej int error;
821 1.9.4.1 thorpej struct proc *wrk;
822 1.9.4.1 thorpej
823 1.9.4.1 thorpej /* Now, everything is ready, start a kthread */
824 1.9.4.1 thorpej if ((error = kthread_create1(edcworker, sc, &wrk,
825 1.9.4.1 thorpej "%s", sc->sc_dev.dv_xname))) {
826 1.9.4.1 thorpej printf("%s: cannot spawn worker thread: errno=%d\n",
827 1.9.4.1 thorpej sc->sc_dev.dv_xname, error);
828 1.9.4.1 thorpej panic("edc_spawn_worker");
829 1.1 jdolecek }
830 1.9.4.1 thorpej }
831 1.9.4.1 thorpej
832 1.9.4.1 thorpej /*
833 1.9.4.1 thorpej * Main worker thread function.
834 1.9.4.1 thorpej */
835 1.9.4.1 thorpej void
836 1.9.4.1 thorpej edcworker(arg)
837 1.9.4.1 thorpej void *arg;
838 1.9.4.1 thorpej {
839 1.9.4.1 thorpej struct edc_mca_softc *sc = (struct edc_mca_softc *) arg;
840 1.9.4.1 thorpej struct ed_softc *ed;
841 1.9.4.1 thorpej struct buf *bp;
842 1.9.4.2 jdolecek int i, error;
843 1.9.4.1 thorpej
844 1.9.4.1 thorpej config_pending_decr();
845 1.9.4.1 thorpej
846 1.9.4.1 thorpej for(;;) {
847 1.9.4.1 thorpej /* Wait until awakened */
848 1.9.4.1 thorpej (void) tsleep(sc, PRIBIO, "edcidle", 0);
849 1.9.4.1 thorpej
850 1.9.4.1 thorpej for(i=0; i<sc->sc_maxdevs; ) {
851 1.9.4.1 thorpej if ((ed = sc->sc_ed[i]) == NULL) {
852 1.9.4.1 thorpej i++;
853 1.9.4.1 thorpej continue;
854 1.9.4.1 thorpej }
855 1.9.4.1 thorpej
856 1.9.4.1 thorpej /* Is there a buf for us ? */
857 1.9.4.1 thorpej simple_lock(&ed->sc_q_lock);
858 1.9.4.3 jdolecek if ((bp = BUFQ_GET(&ed->sc_q)) == NULL) {
859 1.9.4.1 thorpej simple_unlock(&ed->sc_q_lock);
860 1.9.4.1 thorpej i++;
861 1.9.4.1 thorpej continue;
862 1.9.4.1 thorpej }
863 1.9.4.1 thorpej simple_unlock(&ed->sc_q_lock);
864 1.9.4.1 thorpej
865 1.9.4.1 thorpej /* Instrumentation. */
866 1.9.4.1 thorpej disk_busy(&ed->sc_dk);
867 1.9.4.1 thorpej
868 1.9.4.1 thorpej error = edc_bio(sc, ed, bp->b_data, bp->b_bcount,
869 1.9.4.1 thorpej bp->b_rawblkno, (bp->b_flags & B_READ), 0);
870 1.9.4.1 thorpej
871 1.9.4.1 thorpej if (error) {
872 1.9.4.1 thorpej bp->b_error = error;
873 1.9.4.1 thorpej bp->b_flags |= B_ERROR;
874 1.9.4.1 thorpej } else {
875 1.9.4.1 thorpej /* Set resid, most commonly to zero. */
876 1.9.4.1 thorpej bp->b_resid = sc->sc_resblk * DEV_BSIZE;
877 1.9.4.1 thorpej }
878 1.9.4.1 thorpej
879 1.9.4.1 thorpej disk_unbusy(&ed->sc_dk, (bp->b_bcount - bp->b_resid));
880 1.9.4.1 thorpej #if NRND > 0
881 1.9.4.1 thorpej rnd_add_uint32(&ed->rnd_source, bp->b_blkno);
882 1.9.4.1 thorpej #endif
883 1.9.4.1 thorpej biodone(bp);
884 1.9.4.1 thorpej }
885 1.9.4.1 thorpej }
886 1.9.4.1 thorpej }
887 1.9.4.1 thorpej
888 1.9.4.1 thorpej int
889 1.9.4.1 thorpej edc_bio(struct edc_mca_softc *sc, struct ed_softc *ed, void *data,
890 1.9.4.1 thorpej size_t bcount, daddr_t rawblkno, int isread, int poll)
891 1.9.4.1 thorpej {
892 1.9.4.1 thorpej u_int16_t cmd_args[4];
893 1.9.4.1 thorpej int error=0, fl;
894 1.9.4.1 thorpej u_int16_t track;
895 1.9.4.1 thorpej u_int16_t cyl;
896 1.9.4.1 thorpej u_int8_t head;
897 1.9.4.1 thorpej u_int8_t sector;
898 1.9.4.1 thorpej
899 1.9.4.1 thorpej mca_disk_busy();
900 1.9.4.1 thorpej
901 1.9.4.1 thorpej /* set WAIT and R/W flag appropriately for the DMA transfer */
902 1.9.4.1 thorpej fl = ((poll) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK)
903 1.9.4.1 thorpej | ((isread) ? BUS_DMA_READ : BUS_DMA_WRITE);
904 1.9.4.1 thorpej
905 1.9.4.1 thorpej /* Load the buffer for DMA transfer. */
906 1.9.4.1 thorpej if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_xfer, data,
907 1.9.4.1 thorpej bcount, NULL, BUS_DMA_STREAMING|fl))) {
908 1.9.4.1 thorpej printf("%s: ed_bio: unable to load DMA buffer - error %d\n",
909 1.9.4.1 thorpej ed->sc_dev.dv_xname, error);
910 1.9.4.1 thorpej goto out;
911 1.9.4.1 thorpej }
912 1.9.4.1 thorpej
913 1.9.4.1 thorpej bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_xfer, 0,
914 1.9.4.1 thorpej bcount, (isread) ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
915 1.9.4.1 thorpej
916 1.9.4.1 thorpej track = rawblkno / ed->sectors;
917 1.9.4.1 thorpej head = track % ed->heads;
918 1.9.4.1 thorpej cyl = track / ed->heads;
919 1.9.4.1 thorpej sector = rawblkno % ed->sectors;
920 1.9.4.1 thorpej
921 1.9.4.1 thorpej /* Read or Write Data command */
922 1.9.4.1 thorpej cmd_args[0] = 2; /* Options 0000010 */
923 1.9.4.1 thorpej cmd_args[1] = bcount / DEV_BSIZE;
924 1.9.4.1 thorpej cmd_args[2] = ((cyl & 0x1f) << 11) | (head << 5) | sector;
925 1.9.4.1 thorpej cmd_args[3] = ((cyl & 0x3E0) >> 5);
926 1.9.4.1 thorpej error = edc_run_cmd(sc,
927 1.9.4.1 thorpej (isread) ? CMD_READ_DATA : CMD_WRITE_DATA,
928 1.9.4.1 thorpej ed->sc_devno, cmd_args, 4, poll);
929 1.9.4.1 thorpej
930 1.9.4.1 thorpej /* Sync the DMA memory */
931 1.9.4.1 thorpej if (!error) {
932 1.9.4.1 thorpej bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_xfer, 0, bcount,
933 1.9.4.1 thorpej (isread)? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
934 1.9.4.1 thorpej }
935 1.9.4.1 thorpej
936 1.9.4.1 thorpej /* We are done, unload buffer from DMA map */
937 1.9.4.1 thorpej bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap_xfer);
938 1.9.4.1 thorpej
939 1.9.4.1 thorpej out:
940 1.9.4.1 thorpej mca_disk_unbusy();
941 1.9.4.1 thorpej
942 1.9.4.1 thorpej return (error);
943 1.1 jdolecek }
944