esp_pcmcia.c revision 1.29 
1/*	$NetBSD: esp_pcmcia.c,v 1.29 2006/11/16 01:33:20 christos Exp $	*/
2
3/*-
4 * Copyright (c) 2000, 2004 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *        This product includes software developed by the NetBSD
21 *        Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39#include <sys/cdefs.h>
40__KERNEL_RCSID(0, "$NetBSD: esp_pcmcia.c,v 1.29 2006/11/16 01:33:20 christos Exp $");
41
42#include <sys/param.h>
43#include <sys/systm.h>
44#include <sys/device.h>
45#include <sys/buf.h>
46
47#include <machine/bus.h>
48#include <machine/intr.h>
49
50#include <dev/scsipi/scsi_all.h>
51#include <dev/scsipi/scsipi_all.h>
52#include <dev/scsipi/scsiconf.h>
53
54#include <dev/pcmcia/pcmciareg.h>
55#include <dev/pcmcia/pcmciavar.h>
56#include <dev/pcmcia/pcmciadevs.h>
57
58#include <dev/ic/ncr53c9xreg.h>
59#include <dev/ic/ncr53c9xvar.h>
60
61struct esp_pcmcia_softc {
62	struct ncr53c9x_softc	sc_ncr53c9x;	/* glue to MI code */
63
64	int		sc_active;		/* Pseudo-DMA state vars */
65	int		sc_tc;
66	int		sc_datain;
67	size_t		sc_dmasize;
68	size_t		sc_dmatrans;
69	char		**sc_dmaaddr;
70	size_t		*sc_pdmalen;
71
72	/* PCMCIA-specific goo. */
73	struct pcmcia_function *sc_pf;		/* our PCMCIA function */
74	void *sc_ih;				/* interrupt handler */
75#ifdef ESP_PCMCIA_POLL
76	struct callout sc_poll_ch;
77#endif
78	bus_space_tag_t	sc_iot;
79	bus_space_handle_t sc_ioh;
80
81	int sc_state;
82#define ESP_PCMCIA_ATTACHED	3
83};
84
85int	esp_pcmcia_match(struct device *, struct cfdata *, void *);
86int	esp_pcmcia_validate_config(struct pcmcia_config_entry *);
87void	esp_pcmcia_attach(struct device *, struct device *, void *);
88void	esp_pcmcia_init(struct esp_pcmcia_softc *);
89int	esp_pcmcia_detach(struct device *, int);
90int	esp_pcmcia_enable(struct device *, int);
91
92CFATTACH_DECL(esp_pcmcia, sizeof(struct esp_pcmcia_softc),
93    esp_pcmcia_match, esp_pcmcia_attach, esp_pcmcia_detach, NULL);
94
95/*
96 * Functions and the switch for the MI code.
97 */
98#ifdef ESP_PCMCIA_POLL
99void	esp_pcmcia_poll(void *);
100#endif
101u_char	esp_pcmcia_read_reg(struct ncr53c9x_softc *, int);
102void	esp_pcmcia_write_reg(struct ncr53c9x_softc *, int, u_char);
103int	esp_pcmcia_dma_isintr(struct ncr53c9x_softc *);
104void	esp_pcmcia_dma_reset(struct ncr53c9x_softc *);
105int	esp_pcmcia_dma_intr(struct ncr53c9x_softc *);
106int	esp_pcmcia_dma_setup(struct ncr53c9x_softc *, caddr_t *,
107	    size_t *, int, size_t *);
108void	esp_pcmcia_dma_go(struct ncr53c9x_softc *);
109void	esp_pcmcia_dma_stop(struct ncr53c9x_softc *);
110int	esp_pcmcia_dma_isactive(struct ncr53c9x_softc *);
111
112const struct ncr53c9x_glue esp_pcmcia_glue = {
113	esp_pcmcia_read_reg,
114	esp_pcmcia_write_reg,
115	esp_pcmcia_dma_isintr,
116	esp_pcmcia_dma_reset,
117	esp_pcmcia_dma_intr,
118	esp_pcmcia_dma_setup,
119	esp_pcmcia_dma_go,
120	esp_pcmcia_dma_stop,
121	esp_pcmcia_dma_isactive,
122	NULL,			/* gl_clear_latched_intr */
123};
124
125const struct pcmcia_product esp_pcmcia_products[] = {
126	{ PCMCIA_VENDOR_PANASONIC, PCMCIA_PRODUCT_PANASONIC_KXLC002,
127	  PCMCIA_CIS_PANASONIC_KXLC002 },
128
129	{ PCMCIA_VENDOR_RATOC, PCMCIA_PRODUCT_RATOC_REX_9530,
130	  PCMCIA_CIS_RATOC_REX_9530 },
131};
132const size_t esp_pcmcia_nproducts =
133    sizeof(esp_pcmcia_products) / sizeof(esp_pcmcia_products[0]);
134
135int
136esp_pcmcia_match(struct device *parent, struct cfdata *match,
137    void *aux)
138{
139	struct pcmcia_attach_args *pa = aux;
140
141	if (pcmcia_product_lookup(pa, esp_pcmcia_products, esp_pcmcia_nproducts,
142	    sizeof(esp_pcmcia_products[0]), NULL))
143		return (1);
144	return (0);
145}
146
147int
148esp_pcmcia_validate_config(cfe)
149	struct pcmcia_config_entry *cfe;
150{
151	if (cfe->iftype != PCMCIA_IFTYPE_IO ||
152	    cfe->num_memspace != 0 ||
153	    cfe->num_iospace != 1)
154		return (EINVAL);
155	return (0);
156}
157
158void
159esp_pcmcia_attach(struct device *parent, struct device *self,
160    void *aux)
161{
162	struct esp_pcmcia_softc *esc = (void *)self;
163	struct ncr53c9x_softc *sc = &esc->sc_ncr53c9x;
164	struct pcmcia_attach_args *pa = aux;
165	struct pcmcia_config_entry *cfe;
166	struct pcmcia_function *pf = pa->pf;
167	int error;
168
169	esc->sc_pf = pf;
170
171	error = pcmcia_function_configure(pf, esp_pcmcia_validate_config);
172	if (error) {
173		aprint_error("%s: configure failed, error=%d\n", self->dv_xname,
174		    error);
175		return;
176	}
177
178	cfe = pf->cfe;
179	esc->sc_iot = cfe->iospace[0].handle.iot;
180	esc->sc_ioh = cfe->iospace[0].handle.ioh;
181	esp_pcmcia_init(esc);
182
183	error = esp_pcmcia_enable(self, 1);
184	if (error)
185		goto fail;
186
187	sc->sc_adapter.adapt_minphys = minphys;
188	sc->sc_adapter.adapt_request = ncr53c9x_scsipi_request;
189	sc->sc_adapter.adapt_enable = esp_pcmcia_enable;
190	sc->sc_adapter.adapt_refcnt = 1;
191
192	ncr53c9x_attach(sc);
193	scsipi_adapter_delref(&sc->sc_adapter);
194	esc->sc_state = ESP_PCMCIA_ATTACHED;
195	return;
196
197fail:
198	pcmcia_function_unconfigure(pf);
199}
200
201void
202esp_pcmcia_init(esc)
203	struct esp_pcmcia_softc *esc;
204{
205	struct ncr53c9x_softc *sc = &esc->sc_ncr53c9x;
206
207	/* id 7, clock 40M, parity ON, sync OFF, fast ON, slow ON */
208
209	sc->sc_glue = &esp_pcmcia_glue;
210
211#ifdef ESP_PCMCIA_POLL
212	callout_init(&esc->sc_poll_ch);
213#endif
214
215	sc->sc_rev = NCR_VARIANT_ESP406;
216	sc->sc_id = 7;
217	sc->sc_freq = 40;
218	/* try -PARENB -SLOW */
219	sc->sc_cfg1 = sc->sc_id | NCRCFG1_PARENB | NCRCFG1_SLOW;
220	/* try +FE */
221	sc->sc_cfg2 = NCRCFG2_SCSI2;
222	/* try -IDM -FSCSI -FCLK */
223	sc->sc_cfg3 = NCRESPCFG3_CDB | NCRESPCFG3_FCLK | NCRESPCFG3_IDM |
224	    NCRESPCFG3_FSCSI;
225	sc->sc_cfg4 = NCRCFG4_ACTNEG;
226	/* try +INTP */
227	sc->sc_cfg5 = NCRCFG5_CRS1 | NCRCFG5_AADDR | NCRCFG5_PTRINC;
228	sc->sc_minsync = 0;
229	sc->sc_maxxfer = 64 * 1024;
230}
231
232int
233esp_pcmcia_detach(self, flags)
234	struct device *self;
235	int flags;
236{
237	struct esp_pcmcia_softc *sc = (void *)self;
238	int error;
239
240	if (sc->sc_state != ESP_PCMCIA_ATTACHED)
241		return (0);
242
243	error = ncr53c9x_detach(&sc->sc_ncr53c9x, flags);
244	if (error)
245		return (error);
246
247	pcmcia_function_unconfigure(sc->sc_pf);
248
249	return (0);
250}
251
252int
253esp_pcmcia_enable(arg, onoff)
254	struct device *arg;
255	int onoff;
256{
257	struct esp_pcmcia_softc *sc = (void *)arg;
258	int error;
259
260	if (onoff) {
261#ifdef ESP_PCMCIA_POLL
262		callout_reset(&sc->sc_poll_ch, 1, esp_pcmcia_poll, sc);
263#else
264		/* Establish the interrupt handler. */
265		sc->sc_ih = pcmcia_intr_establish(sc->sc_pf, IPL_BIO,
266		    ncr53c9x_intr, &sc->sc_ncr53c9x);
267		if (!sc->sc_ih)
268			return (EIO);
269#endif
270
271		error = pcmcia_function_enable(sc->sc_pf);
272		if (error) {
273			pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih);
274			sc->sc_ih = 0;
275			return (error);
276		}
277
278		/* Initialize only chip.  */
279		ncr53c9x_init(&sc->sc_ncr53c9x, 0);
280	} else {
281		pcmcia_function_disable(sc->sc_pf);
282#ifdef ESP_PCMCIA_POLL
283		callout_stop(&sc->sc_poll_ch);
284#else
285		pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih);
286		sc->sc_ih = 0;
287#endif
288	}
289
290	return (0);
291}
292
293#ifdef ESP_PCMCIA_POLL
294void
295esp_pcmcia_poll(arg)
296	void *arg;
297{
298	struct esp_pcmcia_softc *esc = arg;
299
300	(void) ncr53c9x_intr(&esc->sc_ncr53c9x);
301	callout_reset(&esc->sc_poll_ch, 1, esp_pcmcia_poll, esc);
302}
303#endif
304
305/*
306 * Glue functions.
307 */
308u_char
309esp_pcmcia_read_reg(sc, reg)
310	struct ncr53c9x_softc *sc;
311	int reg;
312{
313	struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
314	u_char v;
315
316	v = bus_space_read_1(esc->sc_iot, esc->sc_ioh, reg);
317	return v;
318}
319
320void
321esp_pcmcia_write_reg(sc, reg, val)
322	struct ncr53c9x_softc *sc;
323	int reg;
324	u_char val;
325{
326	struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
327	u_char v = val;
328
329	if (reg == NCR_CMD && v == (NCRCMD_TRANS|NCRCMD_DMA))
330		v = NCRCMD_TRANS;
331	bus_space_write_1(esc->sc_iot, esc->sc_ioh, reg, v);
332}
333
334int
335esp_pcmcia_dma_isintr(sc)
336	struct ncr53c9x_softc *sc;
337{
338
339	return NCR_READ_REG(sc, NCR_STAT) & NCRSTAT_INT;
340}
341
342void
343esp_pcmcia_dma_reset(sc)
344	struct ncr53c9x_softc *sc;
345{
346	struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
347
348	esc->sc_active = 0;
349	esc->sc_tc = 0;
350}
351
352int
353esp_pcmcia_dma_intr(sc)
354	struct ncr53c9x_softc *sc;
355{
356	struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
357	u_char	*p;
358	u_int	espphase, espstat, espintr;
359	int	cnt;
360
361	if (esc->sc_active == 0) {
362		printf("%s: dma_intr--inactive DMA\n", sc->sc_dev.dv_xname);
363		return -1;
364	}
365
366	if ((sc->sc_espintr & NCRINTR_BS) == 0) {
367		esc->sc_active = 0;
368		return 0;
369	}
370
371	cnt = *esc->sc_pdmalen;
372	if (*esc->sc_pdmalen == 0) {
373		printf("%s: data interrupt, but no count left\n",
374		    sc->sc_dev.dv_xname);
375	}
376
377	p = *esc->sc_dmaaddr;
378	espphase = sc->sc_phase;
379	espstat = (u_int) sc->sc_espstat;
380	espintr = (u_int) sc->sc_espintr;
381	do {
382		if (esc->sc_datain) {
383			*p++ = NCR_READ_REG(sc, NCR_FIFO);
384			cnt--;
385			if (espphase == DATA_IN_PHASE)
386				NCR_WRITE_REG(sc, NCR_CMD, NCRCMD_TRANS);
387			else
388				esc->sc_active = 0;
389		} else {
390			if (espphase == DATA_OUT_PHASE ||
391			    espphase == MESSAGE_OUT_PHASE) {
392				NCR_WRITE_REG(sc, NCR_FIFO, *p++);
393				cnt--;
394				NCR_WRITE_REG(sc, NCR_CMD, NCRCMD_TRANS);
395			} else
396				esc->sc_active = 0;
397		}
398
399		if (esc->sc_active) {
400			while (!(NCR_READ_REG(sc, NCR_STAT) & NCRSTAT_INT));
401			espstat = NCR_READ_REG(sc, NCR_STAT);
402			espintr = NCR_READ_REG(sc, NCR_INTR);
403			espphase = (espintr & NCRINTR_DIS)
404				    ? /* Disconnected */ BUSFREE_PHASE
405				    : espstat & PHASE_MASK;
406		}
407	} while (esc->sc_active && espintr);
408	sc->sc_phase = espphase;
409	sc->sc_espstat = (u_char) espstat;
410	sc->sc_espintr = (u_char) espintr;
411	*esc->sc_dmaaddr = p;
412	*esc->sc_pdmalen = cnt;
413
414	if (*esc->sc_pdmalen == 0)
415		esc->sc_tc = NCRSTAT_TC;
416	sc->sc_espstat |= esc->sc_tc;
417	return 0;
418}
419
420int
421esp_pcmcia_dma_setup(sc, addr, len, datain, dmasize)
422	struct ncr53c9x_softc *sc;
423	caddr_t *addr;
424	size_t *len;
425	int datain;
426	size_t *dmasize;
427{
428	struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
429
430	esc->sc_dmaaddr = addr;
431	esc->sc_pdmalen = len;
432	esc->sc_datain = datain;
433	esc->sc_dmasize = *dmasize;
434	esc->sc_tc = 0;
435
436	return 0;
437}
438
439void
440esp_pcmcia_dma_go(sc)
441	struct ncr53c9x_softc *sc;
442{
443	struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
444
445	esc->sc_active = 1;
446}
447
448void
449esp_pcmcia_dma_stop(struct ncr53c9x_softc *sc)
450{
451}
452
453int
454esp_pcmcia_dma_isactive(sc)
455	struct ncr53c9x_softc *sc;
456{
457	struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
458
459	return (esc->sc_active);
460}
461