esp_pcmcia.c revision 1.39 
1/*	$NetBSD: esp_pcmcia.c,v 1.39 2016/07/07 06:55:42 msaitoh 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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: esp_pcmcia.c,v 1.39 2016/07/07 06:55:42 msaitoh Exp $");
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/device.h>
38#include <sys/buf.h>
39
40#include <sys/bus.h>
41#include <sys/intr.h>
42
43#include <dev/scsipi/scsi_all.h>
44#include <dev/scsipi/scsipi_all.h>
45#include <dev/scsipi/scsiconf.h>
46
47#include <dev/pcmcia/pcmciareg.h>
48#include <dev/pcmcia/pcmciavar.h>
49#include <dev/pcmcia/pcmciadevs.h>
50
51#include <dev/ic/ncr53c9xreg.h>
52#include <dev/ic/ncr53c9xvar.h>
53
54struct esp_pcmcia_softc {
55	struct ncr53c9x_softc	sc_ncr53c9x;	/* glue to MI code */
56
57	int		sc_active;		/* Pseudo-DMA state vars */
58	int		sc_tc;
59	int		sc_datain;
60	size_t		sc_dmasize;
61	size_t		sc_dmatrans;
62	uint8_t		**sc_dmaaddr;
63	size_t		*sc_pdmalen;
64
65	/* PCMCIA-specific goo. */
66	struct pcmcia_function *sc_pf;		/* our PCMCIA function */
67	void *sc_ih;				/* interrupt handler */
68#ifdef ESP_PCMCIA_POLL
69	struct callout sc_poll_ch;
70#endif
71	bus_space_tag_t	sc_iot;
72	bus_space_handle_t sc_ioh;
73
74	int sc_state;
75#define ESP_PCMCIA_ATTACHED	3
76};
77
78int	esp_pcmcia_match(device_t, cfdata_t, void *);
79int	esp_pcmcia_validate_config(struct pcmcia_config_entry *);
80void	esp_pcmcia_attach(device_t, device_t, void *);
81void	esp_pcmcia_init(struct esp_pcmcia_softc *);
82int	esp_pcmcia_detach(device_t, int);
83int	esp_pcmcia_enable(device_t, int);
84
85CFATTACH_DECL_NEW(esp_pcmcia, sizeof(struct esp_pcmcia_softc),
86    esp_pcmcia_match, esp_pcmcia_attach, esp_pcmcia_detach, NULL);
87
88/*
89 * Functions and the switch for the MI code.
90 */
91#ifdef ESP_PCMCIA_POLL
92void	esp_pcmcia_poll(void *);
93#endif
94uint8_t	esp_pcmcia_read_reg(struct ncr53c9x_softc *, int);
95void	esp_pcmcia_write_reg(struct ncr53c9x_softc *, int, uint8_t);
96int	esp_pcmcia_dma_isintr(struct ncr53c9x_softc *);
97void	esp_pcmcia_dma_reset(struct ncr53c9x_softc *);
98int	esp_pcmcia_dma_intr(struct ncr53c9x_softc *);
99int	esp_pcmcia_dma_setup(struct ncr53c9x_softc *, uint8_t **,
100	    size_t *, int, size_t *);
101void	esp_pcmcia_dma_go(struct ncr53c9x_softc *);
102void	esp_pcmcia_dma_stop(struct ncr53c9x_softc *);
103int	esp_pcmcia_dma_isactive(struct ncr53c9x_softc *);
104
105const struct ncr53c9x_glue esp_pcmcia_glue = {
106	esp_pcmcia_read_reg,
107	esp_pcmcia_write_reg,
108	esp_pcmcia_dma_isintr,
109	esp_pcmcia_dma_reset,
110	esp_pcmcia_dma_intr,
111	esp_pcmcia_dma_setup,
112	esp_pcmcia_dma_go,
113	esp_pcmcia_dma_stop,
114	esp_pcmcia_dma_isactive,
115	NULL,			/* gl_clear_latched_intr */
116};
117
118const struct pcmcia_product esp_pcmcia_products[] = {
119	{ PCMCIA_VENDOR_PANASONIC, PCMCIA_PRODUCT_PANASONIC_KXLC002,
120	  PCMCIA_CIS_PANASONIC_KXLC002 },
121
122	{ PCMCIA_VENDOR_RATOC, PCMCIA_PRODUCT_RATOC_REX_9530,
123	  PCMCIA_CIS_RATOC_REX_9530 },
124};
125const size_t esp_pcmcia_nproducts = __arraycount(esp_pcmcia_products);
126
127int
128esp_pcmcia_match(device_t parent, cfdata_t cf, void *aux)
129{
130	struct pcmcia_attach_args *pa = aux;
131
132	if (pcmcia_product_lookup(pa, esp_pcmcia_products, esp_pcmcia_nproducts,
133	    sizeof(esp_pcmcia_products[0]), NULL))
134		return 1;
135	return 0;
136}
137
138int
139esp_pcmcia_validate_config(struct pcmcia_config_entry *cfe)
140{
141
142	if (cfe->iftype != PCMCIA_IFTYPE_IO ||
143	    cfe->num_memspace != 0 ||
144	    cfe->num_iospace != 1)
145		return EINVAL;
146	return 0;
147}
148
149void
150esp_pcmcia_attach(device_t parent, device_t self, void *aux)
151{
152	struct esp_pcmcia_softc *esc = device_private(self);
153	struct ncr53c9x_softc *sc = &esc->sc_ncr53c9x;
154	struct pcmcia_attach_args *pa = aux;
155	struct pcmcia_config_entry *cfe;
156	struct pcmcia_function *pf = pa->pf;
157	int error;
158
159	sc->sc_dev = self;
160
161	esc->sc_pf = pf;
162
163	error = pcmcia_function_configure(pf, esp_pcmcia_validate_config);
164	if (error) {
165		aprint_error_dev(self, "configure failed, error=%d\n", error);
166		return;
167	}
168
169	cfe = pf->cfe;
170	esc->sc_iot = cfe->iospace[0].handle.iot;
171	esc->sc_ioh = cfe->iospace[0].handle.ioh;
172	esp_pcmcia_init(esc);
173
174	aprint_normal("%s", device_xname(self));
175
176	sc->sc_adapter.adapt_minphys = minphys;
177	sc->sc_adapter.adapt_request = ncr53c9x_scsipi_request;
178	sc->sc_adapter.adapt_enable = esp_pcmcia_enable;
179
180	ncr53c9x_attach(sc);
181	esc->sc_state = ESP_PCMCIA_ATTACHED;
182}
183
184void
185esp_pcmcia_init(struct esp_pcmcia_softc *esc)
186{
187	struct ncr53c9x_softc *sc = &esc->sc_ncr53c9x;
188
189	/* id 7, clock 40M, parity ON, sync OFF, fast ON, slow ON */
190
191	sc->sc_glue = &esp_pcmcia_glue;
192
193#ifdef ESP_PCMCIA_POLL
194	callout_init(&esc->sc_poll_ch, 0);
195#endif
196
197	sc->sc_rev = NCR_VARIANT_ESP406;
198	sc->sc_id = 7;
199	sc->sc_freq = 40;
200	/* try -PARENB -SLOW */
201	sc->sc_cfg1 = sc->sc_id | NCRCFG1_PARENB | NCRCFG1_SLOW;
202	/* try +FE */
203	sc->sc_cfg2 = NCRCFG2_SCSI2;
204	/* try -IDM -FSCSI -FCLK */
205	sc->sc_cfg3 = NCRESPCFG3_CDB | NCRESPCFG3_FCLK | NCRESPCFG3_IDM |
206	    NCRESPCFG3_FSCSI;
207	sc->sc_cfg4 = NCRCFG4_ACTNEG;
208	/* try +INTP */
209	sc->sc_cfg5 = NCRCFG5_CRS1 | NCRCFG5_AADDR | NCRCFG5_PTRINC;
210	sc->sc_minsync = 0;
211	sc->sc_maxxfer = 64 * 1024;
212}
213
214int
215esp_pcmcia_detach(device_t self, int flags)
216{
217	struct esp_pcmcia_softc *sc = device_private(self);
218	int error;
219
220	if (sc->sc_state != ESP_PCMCIA_ATTACHED)
221		return 0;
222
223	error = ncr53c9x_detach(&sc->sc_ncr53c9x, flags);
224	if (error)
225		return error;
226
227	pcmcia_function_unconfigure(sc->sc_pf);
228
229	return 0;
230}
231
232int
233esp_pcmcia_enable(device_t self, int onoff)
234{
235	struct esp_pcmcia_softc *sc = device_private(self);
236	int error;
237
238	if (onoff) {
239#ifdef ESP_PCMCIA_POLL
240		callout_reset(&sc->sc_poll_ch, 1, esp_pcmcia_poll, sc);
241#else
242		/* Establish the interrupt handler. */
243		sc->sc_ih = pcmcia_intr_establish(sc->sc_pf, IPL_BIO,
244		    ncr53c9x_intr, &sc->sc_ncr53c9x);
245		if (!sc->sc_ih)
246			return EIO;
247#endif
248
249		error = pcmcia_function_enable(sc->sc_pf);
250		if (error) {
251			pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih);
252			sc->sc_ih = 0;
253			return error;
254		}
255
256		/* Initialize only chip.  */
257		ncr53c9x_init(&sc->sc_ncr53c9x, 0);
258	} else {
259		pcmcia_function_disable(sc->sc_pf);
260#ifdef ESP_PCMCIA_POLL
261		callout_stop(&sc->sc_poll_ch);
262#else
263		pcmcia_intr_disestablish(sc->sc_pf, sc->sc_ih);
264		sc->sc_ih = 0;
265#endif
266	}
267
268	return 0;
269}
270
271#ifdef ESP_PCMCIA_POLL
272void
273esp_pcmcia_poll(void *arg)
274{
275	struct esp_pcmcia_softc *esc = arg;
276
277	(void)ncr53c9x_intr(&esc->sc_ncr53c9x);
278	callout_reset(&esc->sc_poll_ch, 1, esp_pcmcia_poll, esc);
279}
280#endif
281
282/*
283 * Glue functions.
284 */
285uint8_t
286esp_pcmcia_read_reg(struct ncr53c9x_softc *sc, int reg)
287{
288	struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
289
290	return bus_space_read_1(esc->sc_iot, esc->sc_ioh, reg);
291}
292
293void
294esp_pcmcia_write_reg(struct ncr53c9x_softc *sc, int reg, uint8_t val)
295{
296	struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
297	uint8_t v = val;
298
299	if (reg == NCR_CMD && v == (NCRCMD_TRANS|NCRCMD_DMA))
300		v = NCRCMD_TRANS;
301	bus_space_write_1(esc->sc_iot, esc->sc_ioh, reg, v);
302}
303
304int
305esp_pcmcia_dma_isintr(struct ncr53c9x_softc *sc)
306{
307
308	return NCR_READ_REG(sc, NCR_STAT) & NCRSTAT_INT;
309}
310
311void
312esp_pcmcia_dma_reset(struct ncr53c9x_softc *sc)
313{
314	struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
315
316	esc->sc_active = 0;
317	esc->sc_tc = 0;
318}
319
320int
321esp_pcmcia_dma_intr(struct ncr53c9x_softc *sc)
322{
323	struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
324	uint8_t	*p;
325	u_int	espphase, espstat, espintr;
326	int	cnt;
327
328	if (esc->sc_active == 0) {
329		printf("%s: dma_intr--inactive DMA\n",
330		    device_xname(sc->sc_dev));
331		return -1;
332	}
333
334	if ((sc->sc_espintr & NCRINTR_BS) == 0) {
335		esc->sc_active = 0;
336		return 0;
337	}
338
339	cnt = *esc->sc_pdmalen;
340	if (*esc->sc_pdmalen == 0) {
341		printf("%s: data interrupt, but no count left\n",
342		    device_xname(sc->sc_dev));
343	}
344
345	p = *esc->sc_dmaaddr;
346	espphase = sc->sc_phase;
347	espstat = (u_int)sc->sc_espstat;
348	espintr = (u_int)sc->sc_espintr;
349	do {
350		if (esc->sc_datain) {
351			*p++ = NCR_READ_REG(sc, NCR_FIFO);
352			cnt--;
353			if (espphase == DATA_IN_PHASE)
354				NCR_WRITE_REG(sc, NCR_CMD, NCRCMD_TRANS);
355			else
356				esc->sc_active = 0;
357		} else {
358			if (espphase == DATA_OUT_PHASE ||
359			    espphase == MESSAGE_OUT_PHASE) {
360				NCR_WRITE_REG(sc, NCR_FIFO, *p++);
361				cnt--;
362				NCR_WRITE_REG(sc, NCR_CMD, NCRCMD_TRANS);
363			} else
364				esc->sc_active = 0;
365		}
366
367		if (esc->sc_active) {
368			while ((NCR_READ_REG(sc, NCR_STAT) & NCRSTAT_INT) == 0)
369				;
370			espstat = NCR_READ_REG(sc, NCR_STAT);
371			espintr = NCR_READ_REG(sc, NCR_INTR);
372			espphase = (espintr & NCRINTR_DIS)
373				    ? /* Disconnected */ BUSFREE_PHASE
374				    : espstat & PHASE_MASK;
375		}
376	} while (esc->sc_active && espintr);
377	sc->sc_phase = espphase;
378	sc->sc_espstat = (uint8_t)espstat;
379	sc->sc_espintr = (uint8_t)espintr;
380	*esc->sc_dmaaddr = p;
381	*esc->sc_pdmalen = cnt;
382
383	if (*esc->sc_pdmalen == 0)
384		esc->sc_tc = NCRSTAT_TC;
385	sc->sc_espstat |= esc->sc_tc;
386	return 0;
387}
388
389int
390esp_pcmcia_dma_setup(struct ncr53c9x_softc *sc, uint8_t **addr, size_t *len,
391    int datain, size_t *dmasize)
392{
393	struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
394
395	esc->sc_dmaaddr = addr;
396	esc->sc_pdmalen = len;
397	esc->sc_datain = datain;
398	esc->sc_dmasize = *dmasize;
399	esc->sc_tc = 0;
400
401	return 0;
402}
403
404void
405esp_pcmcia_dma_go(struct ncr53c9x_softc *sc)
406{
407	struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
408
409	esc->sc_active = 1;
410}
411
412void
413esp_pcmcia_dma_stop(struct ncr53c9x_softc *sc)
414{
415}
416
417int
418esp_pcmcia_dma_isactive(struct ncr53c9x_softc *sc)
419{
420	struct esp_pcmcia_softc *esc = (struct esp_pcmcia_softc *)sc;
421
422	return esc->sc_active;
423}
424