edc_mca.c revision 1.9.4.4 1 1.9.4.4 jdolecek /* $NetBSD: edc_mca.c,v 1.9.4.4 2002/10/10 18:40:02 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 1.9.4.4 jdolecek __KERNEL_RCSID(0, "$NetBSD: edc_mca.c,v 1.9.4.4 2002/10/10 18:40:02 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 1.9.4.4 jdolecek CFATTACH_DECL(edc_mca, sizeof(struct edc_mca_softc),
123 1.9.4.4 jdolecek edc_mca_probe, edc_mca_attach, NULL, NULL);
124 1.1 jdolecek
125 1.1 jdolecek static int edc_intr __P((void *));
126 1.9.4.1 thorpej static void edc_dump_status_block __P((struct edc_mca_softc *,
127 1.9.4.1 thorpej u_int16_t *, int));
128 1.1 jdolecek static int edc_do_attn __P((struct edc_mca_softc *, int, int, int));
129 1.9.4.2 jdolecek static void edc_cmd_wait __P((struct edc_mca_softc *, int, int));
130 1.9.4.1 thorpej static void edcworker __P((void *));
131 1.9.4.1 thorpej static void edc_spawn_worker __P((void *));
132 1.1 jdolecek
133 1.1 jdolecek int
134 1.1 jdolecek edc_mca_probe(parent, match, aux)
135 1.1 jdolecek struct device *parent;
136 1.1 jdolecek struct cfdata *match;
137 1.1 jdolecek void *aux;
138 1.1 jdolecek {
139 1.1 jdolecek struct mca_attach_args *ma = aux;
140 1.1 jdolecek
141 1.1 jdolecek switch (ma->ma_id) {
142 1.1 jdolecek case MCA_PRODUCT_IBM_ESDIC:
143 1.1 jdolecek case MCA_PRODUCT_IBM_ESDIC_IG:
144 1.1 jdolecek return (1);
145 1.1 jdolecek default:
146 1.1 jdolecek return (0);
147 1.1 jdolecek }
148 1.1 jdolecek }
149 1.1 jdolecek
150 1.1 jdolecek void
151 1.1 jdolecek edc_mca_attach(parent, self, aux)
152 1.1 jdolecek struct device *parent, *self;
153 1.1 jdolecek void *aux;
154 1.1 jdolecek {
155 1.1 jdolecek struct edc_mca_softc *sc = (void *) self;
156 1.1 jdolecek struct mca_attach_args *ma = aux;
157 1.9.4.1 thorpej struct ed_attach_args eda;
158 1.1 jdolecek int pos2, pos3, pos4;
159 1.1 jdolecek int irq, drq, iobase;
160 1.1 jdolecek const char *typestr;
161 1.9.4.1 thorpej int devno, error;
162 1.1 jdolecek
163 1.1 jdolecek pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);
164 1.1 jdolecek pos3 = mca_conf_read(ma->ma_mc, ma->ma_slot, 3);
165 1.1 jdolecek pos4 = mca_conf_read(ma->ma_mc, ma->ma_slot, 4);
166 1.1 jdolecek
167 1.1 jdolecek /*
168 1.1 jdolecek * POS register 2: (adf pos0)
169 1.1 jdolecek *
170 1.1 jdolecek * 7 6 5 4 3 2 1 0
171 1.1 jdolecek * \ \____/ \ \__ enable: 0=adapter disabled, 1=adapter enabled
172 1.1 jdolecek * \ \ \___ Primary/Alternate Port Adresses:
173 1.1 jdolecek * \ \ 0=0x3510-3517 1=0x3518-0x351f
174 1.1 jdolecek * \ \_____ DMA Arbitration Level: 0101=5 0110=6 0111=7
175 1.1 jdolecek * \ 0000=0 0001=1 0011=3 0100=4
176 1.1 jdolecek * \_________ Fairness On/Off: 1=On 0=Off
177 1.1 jdolecek *
178 1.1 jdolecek * POS register 3: (adf pos1)
179 1.1 jdolecek *
180 1.1 jdolecek * 7 6 5 4 3 2 1 0
181 1.1 jdolecek * 0 0 \_/
182 1.1 jdolecek * \__________ DMA Burst Pacing Interval: 10=24ms 11=31ms
183 1.1 jdolecek * 01=16ms 00=Burst Disabled
184 1.1 jdolecek *
185 1.1 jdolecek * POS register 4: (adf pos2)
186 1.1 jdolecek *
187 1.1 jdolecek * 7 6 5 4 3 2 1 0
188 1.1 jdolecek * \_/ \__ DMA Pacing Control: 1=Disabled 0=Enabled
189 1.1 jdolecek * \____ Time to Release: 1X=6ms 01=3ms 00=Immediate
190 1.1 jdolecek *
191 1.1 jdolecek * IRQ is fixed to 14 (0x0e).
192 1.1 jdolecek */
193 1.1 jdolecek
194 1.1 jdolecek switch (ma->ma_id) {
195 1.1 jdolecek case MCA_PRODUCT_IBM_ESDIC:
196 1.1 jdolecek typestr = "IBM ESDI Fixed Disk Controller";
197 1.1 jdolecek break;
198 1.1 jdolecek case MCA_PRODUCT_IBM_ESDIC_IG:
199 1.1 jdolecek typestr = "IBM Integ. ESDI Fixed Disk & Controller";
200 1.1 jdolecek break;
201 1.1 jdolecek default:
202 1.9.4.1 thorpej /* never reached */ ;
203 1.1 jdolecek }
204 1.1 jdolecek
205 1.1 jdolecek irq = ESDIC_IRQ;
206 1.1 jdolecek iobase = (pos2 & IO_IS_ALT) ? ESDIC_IOALT : ESDIC_IOPRM;
207 1.1 jdolecek drq = (pos2 & DRQ_MASK) >> 2;
208 1.1 jdolecek
209 1.7 jdolecek printf(" slot %d irq %d drq %d: %s\n", ma->ma_slot+1,
210 1.7 jdolecek irq, drq, typestr);
211 1.6 jdolecek
212 1.1 jdolecek #ifdef DIAGNOSTIC
213 1.1 jdolecek /*
214 1.1 jdolecek * It's not strictly necessary to check this, machine configuration
215 1.1 jdolecek * utility uses only valid adresses.
216 1.1 jdolecek */
217 1.1 jdolecek if (drq == 2 || drq >= 8) {
218 1.1 jdolecek printf("%s: invalid DMA Arbitration Level %d\n",
219 1.1 jdolecek sc->sc_dev.dv_xname, drq);
220 1.1 jdolecek return;
221 1.1 jdolecek }
222 1.1 jdolecek #endif
223 1.1 jdolecek
224 1.7 jdolecek printf("%s: Fairness %s, Release %s, ",
225 1.1 jdolecek sc->sc_dev.dv_xname,
226 1.1 jdolecek (pos2 & FAIRNESS_ENABLE) ? "On" : "Off",
227 1.1 jdolecek (pos4 & RELEASE_1) ? "6ms"
228 1.7 jdolecek : ((pos4 & RELEASE_2) ? "3ms" : "Immediate")
229 1.7 jdolecek );
230 1.1 jdolecek if ((pos4 & PACING_CTRL_DISABLE) == 0) {
231 1.1 jdolecek static const char * const pacint[] =
232 1.1 jdolecek { "disabled", "16ms", "24ms", "31ms"};
233 1.1 jdolecek printf("DMA burst pacing interval %s\n",
234 1.1 jdolecek pacint[(pos3 & PACING_INT_MASK) >> 4]);
235 1.1 jdolecek } else
236 1.1 jdolecek printf("DMA pacing control disabled\n");
237 1.1 jdolecek
238 1.1 jdolecek sc->sc_iot = ma->ma_iot;
239 1.1 jdolecek
240 1.1 jdolecek if (bus_space_map(sc->sc_iot, iobase,
241 1.1 jdolecek ESDIC_REG_NPORTS, 0, &sc->sc_ioh)) {
242 1.1 jdolecek printf("%s: couldn't map registers\n",
243 1.1 jdolecek sc->sc_dev.dv_xname);
244 1.1 jdolecek return;
245 1.1 jdolecek }
246 1.1 jdolecek
247 1.1 jdolecek sc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_BIO, edc_intr, sc);
248 1.1 jdolecek if (sc->sc_ih == NULL) {
249 1.1 jdolecek printf("%s: couldn't establish interrupt handler\n",
250 1.1 jdolecek sc->sc_dev.dv_xname);
251 1.1 jdolecek return;
252 1.1 jdolecek }
253 1.1 jdolecek
254 1.9.4.1 thorpej /* Create a MCA DMA map, used for data transfer */
255 1.9.4.1 thorpej sc->sc_dmat = ma->ma_dmat;
256 1.9.4.1 thorpej if ((error = mca_dmamap_create(sc->sc_dmat, MAXPHYS,
257 1.9.4.1 thorpej BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW | MCABUS_DMA_16BIT,
258 1.9.4.1 thorpej &sc->sc_dmamap_xfer, drq)) != 0){
259 1.9.4.1 thorpej printf("%s: couldn't create DMA map - error %d\n",
260 1.9.4.1 thorpej sc->sc_dev.dv_xname, error);
261 1.9.4.1 thorpej return;
262 1.9.4.1 thorpej }
263 1.9.4.1 thorpej
264 1.1 jdolecek /*
265 1.1 jdolecek * Integrated ESDI controller supports only one disk, other
266 1.1 jdolecek * controllers support two disks.
267 1.1 jdolecek */
268 1.1 jdolecek if (ma->ma_id == MCA_PRODUCT_IBM_ESDIC_IG)
269 1.9.4.1 thorpej sc->sc_maxdevs = 1;
270 1.1 jdolecek else
271 1.9.4.1 thorpej sc->sc_maxdevs = 2;
272 1.1 jdolecek
273 1.9 jdolecek /*
274 1.9 jdolecek * Reset controller and attach individual disks. ed attach routine
275 1.9 jdolecek * uses polling so that this works with interrupts disabled.
276 1.9 jdolecek */
277 1.1 jdolecek
278 1.1 jdolecek /* Do a reset to ensure sane state after warm boot. */
279 1.1 jdolecek if (bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR) & BSR_BUSY) {
280 1.1 jdolecek /* hard reset */
281 1.1 jdolecek printf("%s: controller busy, performing hardware reset ...\n",
282 1.1 jdolecek sc->sc_dev.dv_xname);
283 1.1 jdolecek bus_space_write_1(sc->sc_iot, sc->sc_ioh, BCR,
284 1.1 jdolecek BCR_INT_ENABLE|BCR_RESET);
285 1.1 jdolecek } else {
286 1.1 jdolecek /* "SOFT" reset */
287 1.1 jdolecek edc_do_attn(sc, ATN_RESET_ATTACHMENT, DASD_DEVNO_CONTROLLER,0);
288 1.1 jdolecek }
289 1.1 jdolecek
290 1.9 jdolecek /*
291 1.9.4.2 jdolecek * Since interrupts are disabled, it's necessary
292 1.9 jdolecek * to detect the interrupt request and call edc_intr()
293 1.9 jdolecek * explicitly. See also edc_run_cmd().
294 1.9 jdolecek */
295 1.9 jdolecek while(bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR) & BSR_BUSY) {
296 1.9 jdolecek if (bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR) & BSR_INTR)
297 1.9 jdolecek edc_intr(sc);
298 1.9 jdolecek
299 1.9 jdolecek delay(100);
300 1.9 jdolecek }
301 1.1 jdolecek
302 1.9.4.1 thorpej /* be quiet during probes */
303 1.1 jdolecek sc->sc_flags |= DASD_QUIET;
304 1.1 jdolecek
305 1.1 jdolecek /* check for attached disks */
306 1.9.4.1 thorpej for(devno=0; devno < sc->sc_maxdevs; devno++) {
307 1.9.4.1 thorpej eda.edc_drive = devno;
308 1.9.4.1 thorpej sc->sc_ed[devno] =
309 1.9.4.1 thorpej (void *) config_found_sm(self, &eda, NULL, NULL);
310 1.9.4.1 thorpej
311 1.9.4.1 thorpej /* If initialization did not succeed, NULL the pointer. */
312 1.9.4.1 thorpej if (sc->sc_ed[devno]
313 1.9.4.1 thorpej && (sc->sc_ed[devno]->sc_flags & EDF_INIT) == 0)
314 1.9.4.1 thorpej sc->sc_ed[devno] = NULL;
315 1.1 jdolecek }
316 1.1 jdolecek
317 1.1 jdolecek /* enable full error dumps again */
318 1.1 jdolecek sc->sc_flags &= ~DASD_QUIET;
319 1.1 jdolecek
320 1.9 jdolecek /*
321 1.9 jdolecek * Check if there are any disks attached. If not, disestablish
322 1.9 jdolecek * the interrupt.
323 1.9 jdolecek */
324 1.9.4.1 thorpej for(devno=0; devno < sc->sc_maxdevs; devno++) {
325 1.9.4.1 thorpej if (sc->sc_ed[devno])
326 1.9 jdolecek break;
327 1.9 jdolecek }
328 1.9.4.1 thorpej
329 1.9.4.1 thorpej if (devno == sc->sc_maxdevs) {
330 1.9 jdolecek printf("%s: disabling controller (no drives attached)\n",
331 1.9 jdolecek sc->sc_dev.dv_xname);
332 1.9 jdolecek mca_intr_disestablish(ma->ma_mc, sc->sc_ih);
333 1.9.4.1 thorpej return;
334 1.9 jdolecek }
335 1.9.4.1 thorpej
336 1.9.4.1 thorpej /*
337 1.9.4.1 thorpej * Run the worker thread.
338 1.9.4.1 thorpej */
339 1.9.4.1 thorpej config_pending_incr();
340 1.9.4.1 thorpej kthread_create(edc_spawn_worker, (void *) sc);
341 1.1 jdolecek }
342 1.1 jdolecek
343 1.1 jdolecek void
344 1.9.4.1 thorpej edc_add_disk(sc, ed)
345 1.1 jdolecek struct edc_mca_softc *sc;
346 1.1 jdolecek struct ed_softc *ed;
347 1.1 jdolecek {
348 1.9.4.1 thorpej sc->sc_ed[ed->sc_devno] = ed;
349 1.1 jdolecek }
350 1.1 jdolecek
351 1.1 jdolecek static int
352 1.1 jdolecek edc_intr(arg)
353 1.1 jdolecek void *arg;
354 1.1 jdolecek {
355 1.1 jdolecek struct edc_mca_softc *sc = arg;
356 1.1 jdolecek u_int8_t isr, intr_id;
357 1.1 jdolecek u_int16_t sifr;
358 1.9.4.2 jdolecek int cmd=-1, devno;
359 1.1 jdolecek
360 1.1 jdolecek /*
361 1.1 jdolecek * Check if the interrupt was for us.
362 1.1 jdolecek */
363 1.1 jdolecek if ((bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR) & BSR_INTR) == 0)
364 1.1 jdolecek return (0);
365 1.1 jdolecek
366 1.1 jdolecek /*
367 1.1 jdolecek * Read ISR to find out interrupt type. This also clears the interrupt
368 1.1 jdolecek * condition and BSR_INTR flag. Accordings to docs interrupt ID of 0, 2
369 1.1 jdolecek * and 4 are reserved and not used.
370 1.1 jdolecek */
371 1.1 jdolecek isr = bus_space_read_1(sc->sc_iot, sc->sc_ioh, ISR);
372 1.1 jdolecek intr_id = isr & ISR_INTR_ID_MASK;
373 1.1 jdolecek
374 1.9.4.2 jdolecek #ifdef EDC_DEBUG
375 1.1 jdolecek if (intr_id == 0 || intr_id == 2 || intr_id == 4) {
376 1.1 jdolecek printf("%s: bogus interrupt id %d\n", sc->sc_dev.dv_xname,
377 1.1 jdolecek (int) intr_id);
378 1.1 jdolecek return (0);
379 1.1 jdolecek }
380 1.1 jdolecek #endif
381 1.1 jdolecek
382 1.1 jdolecek /* Get number of device whose intr this was */
383 1.1 jdolecek devno = (isr & 0xe0) >> 5;
384 1.1 jdolecek
385 1.1 jdolecek /*
386 1.1 jdolecek * Get Status block. Higher byte always says how long the status
387 1.1 jdolecek * block is, rest is device number and command code.
388 1.1 jdolecek * Check the status block length against our supported maximum length
389 1.1 jdolecek * and fetch the data.
390 1.1 jdolecek */
391 1.9 jdolecek if (bus_space_read_1(sc->sc_iot, sc->sc_ioh,BSR) & BSR_SIFR_FULL) {
392 1.1 jdolecek size_t len;
393 1.1 jdolecek int i;
394 1.1 jdolecek
395 1.1 jdolecek sifr = le16toh(bus_space_read_2(sc->sc_iot, sc->sc_ioh, SIFR));
396 1.1 jdolecek len = (sifr & 0xff00) >> 8;
397 1.9 jdolecek #ifdef DEBUG
398 1.9.4.1 thorpej if (len > EDC_MAX_CMD_RES_LEN)
399 1.9 jdolecek panic("%s: maximum Status Length exceeded: %d > %d",
400 1.1 jdolecek sc->sc_dev.dv_xname,
401 1.9.4.1 thorpej len, EDC_MAX_CMD_RES_LEN);
402 1.9 jdolecek #endif
403 1.1 jdolecek
404 1.1 jdolecek /* Get command code */
405 1.1 jdolecek cmd = sifr & SIFR_CMD_MASK;
406 1.1 jdolecek
407 1.1 jdolecek /* Read whole status block */
408 1.9.4.2 jdolecek sc->status_block[0] = sifr;
409 1.1 jdolecek for(i=1; i < len; i++) {
410 1.1 jdolecek while((bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR)
411 1.1 jdolecek & BSR_SIFR_FULL) == 0)
412 1.9.4.2 jdolecek ;
413 1.1 jdolecek
414 1.9.4.2 jdolecek sc->status_block[i] = le16toh(
415 1.1 jdolecek bus_space_read_2(sc->sc_iot, sc->sc_ioh, SIFR));
416 1.1 jdolecek }
417 1.9.4.2 jdolecek /* zero out rest */
418 1.9.4.2 jdolecek if (i < EDC_MAX_CMD_RES_LEN) {
419 1.9.4.2 jdolecek memset(&sc->status_block[i], 0,
420 1.9.4.2 jdolecek (EDC_MAX_CMD_RES_LEN-i)*sizeof(u_int16_t));
421 1.9.4.2 jdolecek }
422 1.1 jdolecek }
423 1.1 jdolecek
424 1.1 jdolecek switch (intr_id) {
425 1.1 jdolecek case ISR_DATA_TRANSFER_RDY:
426 1.1 jdolecek /*
427 1.9.4.1 thorpej * Ready to do DMA. The DMA controller has already been
428 1.9.4.1 thorpej * setup, now just kick disk controller to do the transfer.
429 1.1 jdolecek */
430 1.9.4.1 thorpej bus_space_write_1(sc->sc_iot, sc->sc_ioh, BCR,
431 1.9.4.1 thorpej BCR_INT_ENABLE|BCR_DMA_ENABLE);
432 1.1 jdolecek break;
433 1.9.4.2 jdolecek
434 1.1 jdolecek case ISR_COMPLETED:
435 1.1 jdolecek case ISR_COMPLETED_WITH_ECC:
436 1.1 jdolecek case ISR_COMPLETED_RETRIES:
437 1.1 jdolecek case ISR_COMPLETED_WARNING:
438 1.9.4.1 thorpej /*
439 1.9.4.1 thorpej * Copy device config data if appropriate. sc->sc_ed[]
440 1.9.4.1 thorpej * entry might be NULL during probe.
441 1.9.4.1 thorpej */
442 1.9.4.1 thorpej if (cmd == CMD_GET_DEV_CONF && sc->sc_ed[devno]) {
443 1.9.4.2 jdolecek memcpy(sc->sc_ed[devno]->sense_data, sc->status_block,
444 1.9.4.1 thorpej sizeof(sc->sc_ed[devno]->sense_data));
445 1.9.4.1 thorpej }
446 1.9.4.1 thorpej
447 1.9.4.2 jdolecek sc->sc_stat = STAT_DONE;
448 1.1 jdolecek break;
449 1.9.4.2 jdolecek
450 1.1 jdolecek case ISR_RESET_COMPLETED:
451 1.1 jdolecek case ISR_ABORT_COMPLETED:
452 1.1 jdolecek /* nothing to do */
453 1.1 jdolecek break;
454 1.9.4.2 jdolecek
455 1.9.4.2 jdolecek case ISR_ATTN_ERROR:
456 1.9.4.2 jdolecek /*
457 1.9.4.2 jdolecek * Basically, this means driver bug or something seriously
458 1.9.4.2 jdolecek * hosed. panic rather than extending the lossage.
459 1.9.4.2 jdolecek * No status block available, so no further info.
460 1.9.4.2 jdolecek */
461 1.9.4.2 jdolecek panic("%s: dev %d: attention error",
462 1.9.4.2 jdolecek sc->sc_dev.dv_xname,
463 1.9.4.2 jdolecek devno);
464 1.9.4.2 jdolecek /* NOTREACHED */
465 1.9.4.2 jdolecek break;
466 1.9.4.2 jdolecek
467 1.1 jdolecek default:
468 1.1 jdolecek if ((sc->sc_flags & DASD_QUIET) == 0)
469 1.9.4.2 jdolecek edc_dump_status_block(sc, sc->status_block, intr_id);
470 1.1 jdolecek
471 1.9.4.2 jdolecek sc->sc_stat = STAT_ERROR;
472 1.1 jdolecek break;
473 1.1 jdolecek }
474 1.1 jdolecek
475 1.1 jdolecek /*
476 1.1 jdolecek * Unless the interrupt is for Data Transfer Ready or
477 1.1 jdolecek * Attention Error, finish by assertion EOI. This makes
478 1.1 jdolecek * attachment aware the interrupt is processed and system
479 1.1 jdolecek * is ready to accept another one.
480 1.1 jdolecek */
481 1.1 jdolecek if (intr_id != ISR_DATA_TRANSFER_RDY && intr_id != ISR_ATTN_ERROR)
482 1.1 jdolecek edc_do_attn(sc, ATN_END_INT, devno, intr_id);
483 1.1 jdolecek
484 1.1 jdolecek /* If Read or Write Data, wakeup worker thread to finish it */
485 1.9.4.2 jdolecek if (intr_id != ISR_DATA_TRANSFER_RDY) {
486 1.9.4.2 jdolecek if (cmd == CMD_READ_DATA || cmd == CMD_WRITE_DATA)
487 1.9.4.2 jdolecek sc->sc_resblk = sc->status_block[SB_RESBLKCNT_IDX];
488 1.9.4.1 thorpej wakeup_one(sc);
489 1.1 jdolecek }
490 1.1 jdolecek
491 1.1 jdolecek return (1);
492 1.1 jdolecek }
493 1.1 jdolecek
494 1.1 jdolecek /*
495 1.1 jdolecek * This follows the exact order for Attention Request as
496 1.1 jdolecek * written in DASD Storage Interface Specification MC (Rev 2.2).
497 1.1 jdolecek */
498 1.1 jdolecek static int
499 1.1 jdolecek edc_do_attn(sc, attn_type, devno, intr_id)
500 1.1 jdolecek struct edc_mca_softc *sc;
501 1.1 jdolecek int attn_type, devno, intr_id;
502 1.1 jdolecek {
503 1.1 jdolecek int tries;
504 1.1 jdolecek
505 1.1 jdolecek /* 1. Disable interrupts in BCR. */
506 1.1 jdolecek bus_space_write_1(sc->sc_iot, sc->sc_ioh, BCR, 0);
507 1.1 jdolecek
508 1.9 jdolecek /*
509 1.9 jdolecek * 2. Assure NOT BUSY and NO INTERRUPT PENDING, unless acknowledging
510 1.9 jdolecek * a RESET COMPLETED interrupt.
511 1.9 jdolecek */
512 1.1 jdolecek if (intr_id != ISR_RESET_COMPLETED) {
513 1.9.4.2 jdolecek #ifdef EDC_DEBUG
514 1.9.4.2 jdolecek if (attn_type == ATN_CMD_REQ
515 1.9.4.2 jdolecek && (bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR)
516 1.9.4.2 jdolecek & BSR_INT_PENDING))
517 1.9.4.2 jdolecek panic("%s: edc int pending", sc->sc_dev.dv_xname);
518 1.9.4.2 jdolecek #endif
519 1.9.4.2 jdolecek
520 1.9 jdolecek for(tries=1; tries < EDC_ATTN_MAXTRIES; tries++) {
521 1.1 jdolecek if ((bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR)
522 1.9.4.2 jdolecek & BSR_BUSY) == 0)
523 1.1 jdolecek break;
524 1.1 jdolecek }
525 1.1 jdolecek
526 1.9 jdolecek if (tries == EDC_ATTN_MAXTRIES) {
527 1.1 jdolecek printf("%s: edc_do_attn: timeout waiting for attachment to become available\n",
528 1.9 jdolecek sc->sc_ed[devno]->sc_dev.dv_xname);
529 1.9.4.2 jdolecek return (EIO);
530 1.1 jdolecek }
531 1.1 jdolecek }
532 1.1 jdolecek
533 1.1 jdolecek /*
534 1.1 jdolecek * 3. Write proper DEVICE NUMBER and Attention number to ATN.
535 1.1 jdolecek */
536 1.9.4.2 jdolecek bus_space_write_1(sc->sc_iot, sc->sc_ioh, ATN, attn_type | (devno<<5));
537 1.1 jdolecek
538 1.1 jdolecek /*
539 1.1 jdolecek * 4. Enable interrupts via BCR.
540 1.1 jdolecek */
541 1.1 jdolecek bus_space_write_1(sc->sc_iot, sc->sc_ioh, BCR, BCR_INT_ENABLE);
542 1.1 jdolecek
543 1.1 jdolecek return (0);
544 1.1 jdolecek }
545 1.1 jdolecek
546 1.1 jdolecek /*
547 1.1 jdolecek * Wait until command is processed, timeout after 'secs' seconds.
548 1.1 jdolecek * We use mono_time, since we don't need actual RTC, just time
549 1.1 jdolecek * interval.
550 1.1 jdolecek */
551 1.9.4.2 jdolecek static void
552 1.9.4.1 thorpej edc_cmd_wait(sc, secs, poll)
553 1.1 jdolecek struct edc_mca_softc *sc;
554 1.9.4.1 thorpej int secs, poll;
555 1.1 jdolecek {
556 1.9.4.2 jdolecek int val;
557 1.1 jdolecek
558 1.9.4.1 thorpej if (!poll) {
559 1.9.4.2 jdolecek int s;
560 1.9.4.1 thorpej
561 1.9.4.1 thorpej /* Not polling, can sleep. Sleep until we are awakened,
562 1.9.4.1 thorpej * but maximum secs seconds.
563 1.9.4.1 thorpej */
564 1.9.4.2 jdolecek s = splbio();
565 1.9.4.2 jdolecek if (sc->sc_stat != STAT_DONE)
566 1.9.4.2 jdolecek (void) tsleep(sc, PRIBIO, "edcwcmd", secs * hz);
567 1.9.4.2 jdolecek splx(s);
568 1.9.4.1 thorpej }
569 1.9.4.1 thorpej
570 1.9.4.2 jdolecek /* Wait until the command is completely finished */
571 1.9.4.2 jdolecek while((val = bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR))
572 1.9.4.2 jdolecek & BSR_CMD_INPROGRESS) {
573 1.9.4.2 jdolecek if (poll && (val & BSR_INTR))
574 1.9.4.2 jdolecek edc_intr(sc);
575 1.1 jdolecek }
576 1.1 jdolecek }
577 1.9.4.2 jdolecek
578 1.9.4.2 jdolecek /*
579 1.9.4.2 jdolecek * Command controller to execute specified command on a device.
580 1.9.4.2 jdolecek */
581 1.1 jdolecek int
582 1.9.4.1 thorpej edc_run_cmd(sc, cmd, devno, cmd_args, cmd_len, poll)
583 1.1 jdolecek struct edc_mca_softc *sc;
584 1.1 jdolecek int cmd;
585 1.1 jdolecek int devno;
586 1.1 jdolecek u_int16_t cmd_args[];
587 1.9.4.1 thorpej int cmd_len, poll;
588 1.1 jdolecek {
589 1.9 jdolecek int i, error, tries;
590 1.1 jdolecek u_int16_t cmd0;
591 1.1 jdolecek
592 1.9.4.2 jdolecek sc->sc_stat = STAT_START;
593 1.1 jdolecek
594 1.1 jdolecek /* Do Attention Request for Command Request. */
595 1.1 jdolecek if ((error = edc_do_attn(sc, ATN_CMD_REQ, devno, 0)))
596 1.1 jdolecek return (error);
597 1.1 jdolecek
598 1.1 jdolecek /*
599 1.1 jdolecek * Construct the command. The bits are like this:
600 1.1 jdolecek *
601 1.1 jdolecek * 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
602 1.1 jdolecek * \_/ 0 0 1 0 \__/ \_____/
603 1.1 jdolecek * \ \__________/ \ \_ Command Code (see CMD_*)
604 1.1 jdolecek * \ \ \__ Device: 0 common, 7 controller
605 1.1 jdolecek * \ \__ Options: reserved, bit 10=cache bypass bit
606 1.1 jdolecek * \_ Type: 00=2B, 01=4B, 10 and 11 reserved
607 1.1 jdolecek *
608 1.1 jdolecek * We always use device 0 or 1, so difference is made only by Command
609 1.1 jdolecek * Code, Command Options and command length.
610 1.1 jdolecek */
611 1.1 jdolecek cmd0 = ((cmd_len == 4) ? (CIFR_LONG_CMD) : 0)
612 1.1 jdolecek | (devno << 5)
613 1.1 jdolecek | (cmd_args[0] << 8) | cmd;
614 1.1 jdolecek cmd_args[0] = cmd0;
615 1.1 jdolecek
616 1.1 jdolecek /*
617 1.1 jdolecek * Write word of CMD to the CIFR. This sets "Command
618 1.1 jdolecek * Interface Register Full (CMD IN)" in BSR. Once the attachment
619 1.9.4.1 thorpej * detects it, it reads the word and clears CMD IN. This all should
620 1.9.4.2 jdolecek * be quite fast, so don't sleep in !poll case neither.
621 1.1 jdolecek */
622 1.1 jdolecek for(i=0; i < cmd_len; i++) {
623 1.1 jdolecek bus_space_write_2(sc->sc_iot, sc->sc_ioh, CIFR,
624 1.1 jdolecek htole16(cmd_args[i]));
625 1.1 jdolecek
626 1.9.4.2 jdolecek /* Wait until CMD IN is cleared. */
627 1.9 jdolecek tries = 0;
628 1.9.4.1 thorpej for(; (bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR)
629 1.9.4.2 jdolecek & BSR_CIFR_FULL) && tries < 10000 ; tries++)
630 1.9 jdolecek delay(poll ? 1000 : 1);
631 1.9.4.2 jdolecek ;
632 1.1 jdolecek
633 1.9.4.2 jdolecek if (tries == 10000
634 1.9.4.2 jdolecek && bus_space_read_1(sc->sc_iot, sc->sc_ioh, BSR)
635 1.9.4.2 jdolecek & BSR_CIFR_FULL) {
636 1.9.4.1 thorpej printf("%s: device too slow to accept command %d\n",
637 1.9.4.1 thorpej sc->sc_dev.dv_xname, cmd);
638 1.9.4.2 jdolecek return (EIO);
639 1.9.4.1 thorpej }
640 1.1 jdolecek }
641 1.1 jdolecek
642 1.1 jdolecek /* Wait for command to complete, but maximum 15 seconds. */
643 1.9.4.2 jdolecek edc_cmd_wait(sc, 15, poll);
644 1.1 jdolecek
645 1.9.4.2 jdolecek return ((sc->sc_stat != STAT_DONE) ? EIO : 0);
646 1.1 jdolecek }
647 1.1 jdolecek
648 1.9.4.1 thorpej #ifdef EDC_DEBUG
649 1.1 jdolecek static const char * const edc_commands[] = {
650 1.1 jdolecek "Invalid Command",
651 1.1 jdolecek "Read Data",
652 1.1 jdolecek "Write Data",
653 1.1 jdolecek "Read Verify",
654 1.1 jdolecek "Write with Verify",
655 1.1 jdolecek "Seek",
656 1.1 jdolecek "Park Head",
657 1.1 jdolecek "Get Command Complete Status",
658 1.1 jdolecek "Get Device Status",
659 1.1 jdolecek "Get Device Configuration",
660 1.1 jdolecek "Get POS Information",
661 1.1 jdolecek "Translate RBA",
662 1.1 jdolecek "Write Attachment Buffer",
663 1.1 jdolecek "Read Attachment Buffer",
664 1.1 jdolecek "Run Diagnostic Test",
665 1.1 jdolecek "Get Diagnostic Status Block",
666 1.1 jdolecek "Get MFG Header",
667 1.1 jdolecek "Format Unit",
668 1.1 jdolecek "Format Prepare",
669 1.1 jdolecek "Set MAX RBA",
670 1.1 jdolecek "Set Power Saving Mode",
671 1.1 jdolecek "Power Conservation Command",
672 1.1 jdolecek };
673 1.1 jdolecek
674 1.1 jdolecek static const char * const edc_cmd_status[256] = {
675 1.1 jdolecek "Reserved",
676 1.1 jdolecek "Command completed successfully",
677 1.1 jdolecek "Reserved",
678 1.1 jdolecek "Command completed successfully with ECC applied",
679 1.1 jdolecek "Reserved",
680 1.1 jdolecek "Command completed successfully with retries",
681 1.1 jdolecek "Format Command partially completed", /* Status available */
682 1.1 jdolecek "Command completed successfully with ECC and retries",
683 1.1 jdolecek "Command completed with Warning", /* Command Error is available */
684 1.1 jdolecek "Aborted",
685 1.1 jdolecek "Reset completed",
686 1.1 jdolecek "Data Transfer Ready", /* No Status Block available */
687 1.1 jdolecek "Command terminated with failure", /* Device Error is available */
688 1.1 jdolecek "DMA Error", /* Retry entire command as recovery */
689 1.1 jdolecek "Command Block Error",
690 1.1 jdolecek "Attention Error (Illegal Attention Code)",
691 1.1 jdolecek /* 0x14 - 0xff reserved */
692 1.1 jdolecek };
693 1.1 jdolecek
694 1.1 jdolecek static const char * const edc_cmd_error[256] = {
695 1.1 jdolecek "No Error",
696 1.1 jdolecek "Invalid parameter in the command block",
697 1.1 jdolecek "Reserved",
698 1.1 jdolecek "Command not supported",
699 1.1 jdolecek "Command Aborted per request",
700 1.1 jdolecek "Reserved",
701 1.1 jdolecek "Command rejected", /* Attachment diagnostic failure */
702 1.1 jdolecek "Format Rejected", /* Prepare Format command is required */
703 1.1 jdolecek "Format Error (Primary Map is not readable)",
704 1.1 jdolecek "Format Error (Secondary map is not readable)",
705 1.1 jdolecek "Format Error (Diagnostic Failure)",
706 1.1 jdolecek "Format Warning (Secondary Map Overflow)",
707 1.1 jdolecek "Reserved"
708 1.1 jdolecek "Format Error (Host Checksum Error)",
709 1.1 jdolecek "Reserved",
710 1.1 jdolecek "Format Warning (Push table overflow)",
711 1.1 jdolecek "Format Warning (More pushes than allowed)",
712 1.1 jdolecek "Reserved",
713 1.1 jdolecek "Format Warning (Error during verifying)",
714 1.1 jdolecek "Invalid device number for the command",
715 1.1 jdolecek /* 0x14-0xff reserved */
716 1.1 jdolecek };
717 1.1 jdolecek
718 1.1 jdolecek static const char * const edc_dev_errors[] = {
719 1.1 jdolecek "No Error",
720 1.1 jdolecek "Seek Fault", /* Device report */
721 1.1 jdolecek "Interface Fault (Parity, Attn, or Cmd Complete Error)",
722 1.1 jdolecek "Block not found (ID not found)",
723 1.1 jdolecek "Block not found (AM not found)",
724 1.1 jdolecek "Data ECC Error (hard error)",
725 1.1 jdolecek "ID CRC Error",
726 1.1 jdolecek "RBA Out of Range",
727 1.1 jdolecek "Reserved",
728 1.1 jdolecek "Defective Block",
729 1.1 jdolecek "Reserved",
730 1.1 jdolecek "Selection Error",
731 1.1 jdolecek "Reserved",
732 1.1 jdolecek "Write Fault",
733 1.1 jdolecek "No index or sector pulse",
734 1.1 jdolecek "Device Not Ready",
735 1.1 jdolecek "Seek Error", /* Attachment report */
736 1.1 jdolecek "Bad Format",
737 1.1 jdolecek "Volume Overflow",
738 1.1 jdolecek "No Data AM Found",
739 1.8 simonb "Block not found (No ID AM or ID CRC error occurred)",
740 1.1 jdolecek "Reserved",
741 1.1 jdolecek "Reserved",
742 1.1 jdolecek "No ID found on track (ID search)",
743 1.1 jdolecek /* 0x19 - 0xff reserved */
744 1.1 jdolecek };
745 1.9.4.1 thorpej #endif /* EDC_DEBUG */
746 1.1 jdolecek
747 1.1 jdolecek static void
748 1.9.4.1 thorpej edc_dump_status_block(sc, status_block, intr_id)
749 1.1 jdolecek struct edc_mca_softc *sc;
750 1.9.4.1 thorpej u_int16_t *status_block;
751 1.9.4.1 thorpej int intr_id;
752 1.1 jdolecek {
753 1.9.4.1 thorpej #ifdef EDC_DEBUG
754 1.9.4.2 jdolecek printf("%s: Command: %s, Status: %s (intr %d)\n",
755 1.9.4.1 thorpej sc->sc_dev.dv_xname,
756 1.9.4.1 thorpej edc_commands[status_block[0] & 0x1f],
757 1.9.4.2 jdolecek edc_cmd_status[SB_GET_CMD_STATUS(status_block)],
758 1.9.4.2 jdolecek intr_id
759 1.1 jdolecek );
760 1.9.4.1 thorpej #else
761 1.9.4.2 jdolecek printf("%s: Command: %d, Status: %d (intr %d)\n",
762 1.9.4.1 thorpej sc->sc_dev.dv_xname,
763 1.9.4.1 thorpej status_block[0] & 0x1f,
764 1.9.4.2 jdolecek SB_GET_CMD_STATUS(status_block),
765 1.9.4.2 jdolecek intr_id
766 1.9.4.2 jdolecek );
767 1.9.4.1 thorpej #endif
768 1.3 jdolecek printf("%s: # left blocks: %u, last processed RBA: %u\n",
769 1.9.4.1 thorpej sc->sc_dev.dv_xname,
770 1.9.4.1 thorpej status_block[SB_RESBLKCNT_IDX],
771 1.9.4.1 thorpej (status_block[5] << 16) | status_block[4]);
772 1.1 jdolecek
773 1.4 jdolecek if (intr_id == ISR_COMPLETED_WARNING) {
774 1.9.4.1 thorpej #ifdef EDC_DEBUG
775 1.1 jdolecek printf("%s: Command Error Code: %s\n",
776 1.9.4.1 thorpej sc->sc_dev.dv_xname,
777 1.9.4.1 thorpej edc_cmd_error[status_block[1] & 0xff]);
778 1.9.4.1 thorpej #else
779 1.9.4.1 thorpej printf("%s: Command Error Code: %d\n",
780 1.9.4.1 thorpej sc->sc_dev.dv_xname,
781 1.9.4.1 thorpej status_block[1] & 0xff);
782 1.9.4.1 thorpej #endif
783 1.1 jdolecek }
784 1.1 jdolecek
785 1.4 jdolecek if (intr_id == ISR_CMD_FAILED) {
786 1.9.4.1 thorpej #ifdef EDC_DEBUG
787 1.4 jdolecek char buf[100];
788 1.4 jdolecek
789 1.4 jdolecek printf("%s: Device Error Code: %s\n",
790 1.9.4.1 thorpej sc->sc_dev.dv_xname,
791 1.9.4.1 thorpej edc_dev_errors[status_block[2] & 0xff]);
792 1.9.4.1 thorpej bitmask_snprintf((status_block[2] & 0xff00) >> 8,
793 1.4 jdolecek "\20"
794 1.4 jdolecek "\01SeekOrCmdComplete"
795 1.4 jdolecek "\02Track0Flag"
796 1.4 jdolecek "\03WriteFault"
797 1.4 jdolecek "\04Selected"
798 1.4 jdolecek "\05Ready"
799 1.4 jdolecek "\06Reserved0"
800 1.4 jdolecek "\07STANDBY"
801 1.4 jdolecek "\010Reserved0",
802 1.4 jdolecek buf, sizeof(buf));
803 1.4 jdolecek printf("%s: Device Status: %s\n",
804 1.9.4.1 thorpej sc->sc_dev.dv_xname, buf);
805 1.9.4.1 thorpej #else
806 1.9.4.1 thorpej printf("%s: Device Error Code: %d, Device Status: %d\n",
807 1.9.4.1 thorpej sc->sc_dev.dv_xname,
808 1.9.4.1 thorpej status_block[2] & 0xff,
809 1.9.4.1 thorpej (status_block[2] & 0xff00) >> 8);
810 1.9.4.1 thorpej #endif
811 1.9.4.1 thorpej }
812 1.9.4.1 thorpej }
813 1.9.4.1 thorpej
814 1.9.4.1 thorpej static void
815 1.9.4.1 thorpej edc_spawn_worker(arg)
816 1.9.4.1 thorpej void *arg;
817 1.9.4.1 thorpej {
818 1.9.4.1 thorpej struct edc_mca_softc *sc = (struct edc_mca_softc *) arg;
819 1.9.4.1 thorpej int error;
820 1.9.4.1 thorpej struct proc *wrk;
821 1.9.4.1 thorpej
822 1.9.4.1 thorpej /* Now, everything is ready, start a kthread */
823 1.9.4.1 thorpej if ((error = kthread_create1(edcworker, sc, &wrk,
824 1.9.4.1 thorpej "%s", sc->sc_dev.dv_xname))) {
825 1.9.4.1 thorpej printf("%s: cannot spawn worker thread: errno=%d\n",
826 1.9.4.1 thorpej sc->sc_dev.dv_xname, error);
827 1.9.4.1 thorpej panic("edc_spawn_worker");
828 1.1 jdolecek }
829 1.9.4.1 thorpej }
830 1.9.4.1 thorpej
831 1.9.4.1 thorpej /*
832 1.9.4.1 thorpej * Main worker thread function.
833 1.9.4.1 thorpej */
834 1.9.4.1 thorpej void
835 1.9.4.1 thorpej edcworker(arg)
836 1.9.4.1 thorpej void *arg;
837 1.9.4.1 thorpej {
838 1.9.4.1 thorpej struct edc_mca_softc *sc = (struct edc_mca_softc *) arg;
839 1.9.4.1 thorpej struct ed_softc *ed;
840 1.9.4.1 thorpej struct buf *bp;
841 1.9.4.2 jdolecek int i, error;
842 1.9.4.1 thorpej
843 1.9.4.1 thorpej config_pending_decr();
844 1.9.4.1 thorpej
845 1.9.4.1 thorpej for(;;) {
846 1.9.4.1 thorpej /* Wait until awakened */
847 1.9.4.1 thorpej (void) tsleep(sc, PRIBIO, "edcidle", 0);
848 1.9.4.1 thorpej
849 1.9.4.1 thorpej for(i=0; i<sc->sc_maxdevs; ) {
850 1.9.4.1 thorpej if ((ed = sc->sc_ed[i]) == NULL) {
851 1.9.4.1 thorpej i++;
852 1.9.4.1 thorpej continue;
853 1.9.4.1 thorpej }
854 1.9.4.1 thorpej
855 1.9.4.1 thorpej /* Is there a buf for us ? */
856 1.9.4.1 thorpej simple_lock(&ed->sc_q_lock);
857 1.9.4.3 jdolecek if ((bp = BUFQ_GET(&ed->sc_q)) == NULL) {
858 1.9.4.1 thorpej simple_unlock(&ed->sc_q_lock);
859 1.9.4.1 thorpej i++;
860 1.9.4.1 thorpej continue;
861 1.9.4.1 thorpej }
862 1.9.4.1 thorpej simple_unlock(&ed->sc_q_lock);
863 1.9.4.1 thorpej
864 1.9.4.1 thorpej /* Instrumentation. */
865 1.9.4.1 thorpej disk_busy(&ed->sc_dk);
866 1.9.4.1 thorpej
867 1.9.4.1 thorpej error = edc_bio(sc, ed, bp->b_data, bp->b_bcount,
868 1.9.4.1 thorpej bp->b_rawblkno, (bp->b_flags & B_READ), 0);
869 1.9.4.1 thorpej
870 1.9.4.1 thorpej if (error) {
871 1.9.4.1 thorpej bp->b_error = error;
872 1.9.4.1 thorpej bp->b_flags |= B_ERROR;
873 1.9.4.1 thorpej } else {
874 1.9.4.1 thorpej /* Set resid, most commonly to zero. */
875 1.9.4.1 thorpej bp->b_resid = sc->sc_resblk * DEV_BSIZE;
876 1.9.4.1 thorpej }
877 1.9.4.1 thorpej
878 1.9.4.1 thorpej disk_unbusy(&ed->sc_dk, (bp->b_bcount - bp->b_resid));
879 1.9.4.1 thorpej #if NRND > 0
880 1.9.4.1 thorpej rnd_add_uint32(&ed->rnd_source, bp->b_blkno);
881 1.9.4.1 thorpej #endif
882 1.9.4.1 thorpej biodone(bp);
883 1.9.4.1 thorpej }
884 1.9.4.1 thorpej }
885 1.9.4.1 thorpej }
886 1.9.4.1 thorpej
887 1.9.4.1 thorpej int
888 1.9.4.1 thorpej edc_bio(struct edc_mca_softc *sc, struct ed_softc *ed, void *data,
889 1.9.4.1 thorpej size_t bcount, daddr_t rawblkno, int isread, int poll)
890 1.9.4.1 thorpej {
891 1.9.4.1 thorpej u_int16_t cmd_args[4];
892 1.9.4.1 thorpej int error=0, fl;
893 1.9.4.1 thorpej u_int16_t track;
894 1.9.4.1 thorpej u_int16_t cyl;
895 1.9.4.1 thorpej u_int8_t head;
896 1.9.4.1 thorpej u_int8_t sector;
897 1.9.4.1 thorpej
898 1.9.4.1 thorpej mca_disk_busy();
899 1.9.4.1 thorpej
900 1.9.4.1 thorpej /* set WAIT and R/W flag appropriately for the DMA transfer */
901 1.9.4.1 thorpej fl = ((poll) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK)
902 1.9.4.1 thorpej | ((isread) ? BUS_DMA_READ : BUS_DMA_WRITE);
903 1.9.4.1 thorpej
904 1.9.4.1 thorpej /* Load the buffer for DMA transfer. */
905 1.9.4.1 thorpej if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_xfer, data,
906 1.9.4.1 thorpej bcount, NULL, BUS_DMA_STREAMING|fl))) {
907 1.9.4.1 thorpej printf("%s: ed_bio: unable to load DMA buffer - error %d\n",
908 1.9.4.1 thorpej ed->sc_dev.dv_xname, error);
909 1.9.4.1 thorpej goto out;
910 1.9.4.1 thorpej }
911 1.9.4.1 thorpej
912 1.9.4.1 thorpej bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_xfer, 0,
913 1.9.4.1 thorpej bcount, (isread) ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
914 1.9.4.1 thorpej
915 1.9.4.1 thorpej track = rawblkno / ed->sectors;
916 1.9.4.1 thorpej head = track % ed->heads;
917 1.9.4.1 thorpej cyl = track / ed->heads;
918 1.9.4.1 thorpej sector = rawblkno % ed->sectors;
919 1.9.4.1 thorpej
920 1.9.4.1 thorpej /* Read or Write Data command */
921 1.9.4.1 thorpej cmd_args[0] = 2; /* Options 0000010 */
922 1.9.4.1 thorpej cmd_args[1] = bcount / DEV_BSIZE;
923 1.9.4.1 thorpej cmd_args[2] = ((cyl & 0x1f) << 11) | (head << 5) | sector;
924 1.9.4.1 thorpej cmd_args[3] = ((cyl & 0x3E0) >> 5);
925 1.9.4.1 thorpej error = edc_run_cmd(sc,
926 1.9.4.1 thorpej (isread) ? CMD_READ_DATA : CMD_WRITE_DATA,
927 1.9.4.1 thorpej ed->sc_devno, cmd_args, 4, poll);
928 1.9.4.1 thorpej
929 1.9.4.1 thorpej /* Sync the DMA memory */
930 1.9.4.1 thorpej if (!error) {
931 1.9.4.1 thorpej bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_xfer, 0, bcount,
932 1.9.4.1 thorpej (isread)? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
933 1.9.4.1 thorpej }
934 1.9.4.1 thorpej
935 1.9.4.1 thorpej /* We are done, unload buffer from DMA map */
936 1.9.4.1 thorpej bus_dmamap_unload(sc->sc_dmat, sc->sc_dmamap_xfer);
937 1.9.4.1 thorpej
938 1.9.4.1 thorpej out:
939 1.9.4.1 thorpej mca_disk_unbusy();
940 1.9.4.1 thorpej
941 1.9.4.1 thorpej return (error);
942 1.1 jdolecek }
943