ida_eisa.c revision 73113 
1/*
2 * Copyright (c) 2000 Jonathan Lemon
3 * Copyright (c) 1999 by Matthew N. Dodd <winter@jurai.net>
4 * All Rights Reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions, and the following disclaimer,
11 *    without modification, immediately at the beginning of the file.
12 * 2. The name of the author may not be used to endorse or promote products
13 *    derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
19 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: head/sys/dev/ida/ida_eisa.c 73113 2001-02-26 22:25:30Z jlemon $
28 */
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/kernel.h>
33#include <sys/bus.h>
34
35#include <sys/bio.h>
36#include <sys/devicestat.h>
37#include <sys/disk.h>
38
39#include <machine/bus_pio.h>
40#include <machine/bus.h>
41#include <machine/resource.h>
42#include <sys/rman.h>
43
44#include <dev/ida/idavar.h>
45#include <dev/ida/idareg.h>
46
47#include <dev/eisa/eisaconf.h>
48
49#define IDA_EISA_IOPORT_START	0x0c88
50#define IDA_EISA_IOPORT_LEN	0x0017
51
52#define IDA_EISA_IRQ_REG	0x0cc0
53#define IDA_EISA_IRQ_MASK	0xf0
54#define IDA_EISA_IRQ_15		0x80
55#define IDA_EISA_IRQ_14		0x40
56#define IDA_EISA_IRQ_11		0x10
57#define IDA_EISA_IRQ_10		0x20
58
59static int
60ida_v1_fifo_full(struct ida_softc *ida)
61{
62	u_int8_t status;
63
64	status = ida_inb(ida, R_EISA_SYSTEM_DOORBELL);
65	return ((status & EISA_CHANNEL_CLEAR) == 0);
66}
67
68static void
69ida_v1_submit(struct ida_softc *ida, struct ida_qcb *qcb)
70{
71	u_int16_t size;
72
73	/*
74	 * On these cards, this location is actually for control flags.
75	 * Set them to zero and pass in structure size via an I/O port.
76	 */
77	size = qcb->hwqcb->hdr.size << 2;
78	qcb->hwqcb->hdr.size = 0;
79
80	ida_outb(ida, R_EISA_SYSTEM_DOORBELL, EISA_CHANNEL_CLEAR);
81	ida_outl(ida, R_EISA_LIST_ADDR, qcb->hwqcb_busaddr);
82	ida_outw(ida, R_EISA_LIST_LEN, size);
83	ida_outb(ida, R_EISA_LOCAL_DOORBELL, EISA_CHANNEL_BUSY);
84}
85
86static bus_addr_t
87ida_v1_done(struct ida_softc *ida)
88{
89	struct ida_hardware_qcb *hwqcb;
90	bus_addr_t completed;
91	u_int8_t status;
92
93	if ((ida_inb(ida, R_EISA_SYSTEM_DOORBELL) & EISA_CHANNEL_BUSY) == 0)
94		return (0);
95
96	ida_outb(ida, R_EISA_SYSTEM_DOORBELL, EISA_CHANNEL_BUSY);
97	completed = ida_inl(ida, R_EISA_COMPLETE_ADDR);
98	status = ida_inb(ida, R_EISA_LIST_STATUS);
99	ida_outb(ida, R_EISA_LOCAL_DOORBELL, EISA_CHANNEL_CLEAR);
100
101	if (completed != 0) {
102        	hwqcb = (struct ida_hardware_qcb *)
103		    ((bus_addr_t)ida->hwqcbs +
104		    ((completed & ~3) - ida->hwqcb_busaddr));
105		hwqcb->req.error = status;
106	}
107
108	return (completed);
109}
110
111static int
112ida_v1_int_pending(struct ida_softc *ida)
113{
114	return (ida_inb(ida, R_EISA_SYSTEM_DOORBELL) & EISA_CHANNEL_BUSY);
115}
116
117static void
118ida_v1_int_enable(struct ida_softc *ida, int enable)
119{
120	if (enable) {
121		ida_outb(ida, R_EISA_SYSTEM_DOORBELL, ~EISA_CHANNEL_CLEAR);
122		ida_outb(ida, R_EISA_LOCAL_DOORBELL, EISA_CHANNEL_BUSY);
123		ida_outb(ida, R_EISA_INT_MASK, INT_ENABLE);
124		ida_outb(ida, R_EISA_SYSTEM_MASK, INT_ENABLE);
125		ida->flags |= IDA_INTERRUPTS;
126	} else {
127		ida_outb(ida, R_EISA_SYSTEM_MASK, INT_DISABLE);
128		ida->flags &= ~IDA_INTERRUPTS;
129	}
130}
131
132static int
133ida_v2_fifo_full(struct ida_softc *ida)
134{
135	return (ida_inl(ida, R_CMD_FIFO) == 0);
136}
137
138static void
139ida_v2_submit(struct ida_softc *ida, struct ida_qcb *qcb)
140{
141	ida_outl(ida, R_CMD_FIFO, qcb->hwqcb_busaddr);
142}
143
144static bus_addr_t
145ida_v2_done(struct ida_softc *ida)
146{
147	return (ida_inl(ida, R_DONE_FIFO));
148}
149
150static int
151ida_v2_int_pending(struct ida_softc *ida)
152{
153	return (ida_inl(ida, R_INT_PENDING));
154}
155
156static void
157ida_v2_int_enable(struct ida_softc *ida, int enable)
158{
159	if (enable)
160		ida->flags |= IDA_INTERRUPTS;
161	else
162		ida->flags &= ~IDA_INTERRUPTS;
163	ida_outl(ida, R_INT_MASK, enable ? INT_ENABLE : INT_DISABLE);
164}
165
166static struct ida_access ida_v1_access = {
167	ida_v1_fifo_full,
168	ida_v1_submit,
169	ida_v1_done,
170	ida_v1_int_pending,
171	ida_v1_int_enable,
172};
173
174static struct ida_access ida_v2_access = {
175	ida_v2_fifo_full,
176	ida_v2_submit,
177	ida_v2_done,
178	ida_v2_int_pending,
179	ida_v2_int_enable,
180};
181
182static struct ida_board board_id[] = {
183	{ 0x0e114001, "Compaq IDA controller",
184	    &ida_v1_access, 0 },
185	{ 0x0e114002, "Compaq IDA-2 controller",
186	    &ida_v1_access, 0 },
187	{ 0x0e114010, "Compaq IAES controller",
188	    &ida_v1_access, 0 },
189	{ 0x0e114020, "Compaq SMART array controller",
190	    &ida_v1_access, 0 },
191	{ 0x0e114030, "Compaq SMART-2/E array controller",
192	    &ida_v2_access, 0 },
193
194	{ 0, "", 0, 0 }
195};
196
197static struct 	ida_board *ida_eisa_match(eisa_id_t);
198static int	ida_eisa_probe(device_t);
199static int	ida_eisa_attach(device_t);
200
201static device_method_t ida_eisa_methods[] = {
202	DEVMETHOD(device_probe,		ida_eisa_probe),
203	DEVMETHOD(device_attach,	ida_eisa_attach),
204	DEVMETHOD(device_detach,	ida_detach),
205
206	{ 0, 0 }
207};
208
209static driver_t ida_eisa_driver = {
210	"ida",
211	ida_eisa_methods,
212	sizeof(struct ida_softc)
213};
214
215static devclass_t ida_devclass;
216
217static struct ida_board *
218ida_eisa_match(eisa_id_t id)
219{
220	int i;
221
222	for (i = 0; board_id[i].board; i++)
223		if (board_id[i].board == id)
224			return (&board_id[i]);
225	return (NULL);
226}
227
228static int
229ida_eisa_probe(device_t dev)
230{
231	struct ida_board	*board;
232	u_int32_t		io_base;
233	u_int			irq = 0;
234
235	board = ida_eisa_match(eisa_get_id(dev));
236	if (board == NULL)
237		return (ENXIO);
238	device_set_desc(dev, board->desc);
239
240	io_base = (eisa_get_slot(dev) * EISA_SLOT_SIZE);
241
242	switch (IDA_EISA_IRQ_MASK & (inb(IDA_EISA_IRQ_REG + io_base))) {
243	case IDA_EISA_IRQ_15:
244		irq = 15;
245		break;
246	case IDA_EISA_IRQ_14:
247		irq = 14;
248		break;
249	case IDA_EISA_IRQ_11:
250		irq = 11;
251		break;
252	case IDA_EISA_IRQ_10:
253		irq = 10;
254		break;
255	default:
256		device_printf(dev, "slot %d, illegal irq setting.\n",
257		    eisa_get_slot(dev));
258		return (ENXIO);
259	}
260
261	eisa_add_iospace(dev, (io_base + IDA_EISA_IOPORT_START),
262			 IDA_EISA_IOPORT_LEN, RESVADDR_NONE);
263
264        eisa_add_intr(dev, irq, EISA_TRIGGER_LEVEL);		/* XXX ??? */
265
266	return (0);
267}
268
269static int
270ida_eisa_attach(device_t dev)
271{
272	struct ida_softc	*ida;
273	struct ida_board	*board;
274	int			error;
275	int			rid;
276
277	ida = device_get_softc(dev);
278	ida->dev = dev;
279
280	board = ida_eisa_match(eisa_get_id(dev));
281	ida->cmd = *board->accessor;
282	ida->flags = board->flags;
283
284	ida->regs_res_type = SYS_RES_IOPORT;
285	ida->regs_res_id = 0;
286	ida->regs = bus_alloc_resource(dev, ida->regs_res_type,
287	    &ida->regs_res_id, 0, ~0, 1, RF_ACTIVE);
288	if (ida->regs == NULL) {
289		device_printf(dev, "can't allocate register resources\n");
290		return (ENOMEM);
291	}
292
293	error = bus_dma_tag_create(
294		/* parent	*/	NULL,
295		/* alignment	*/	0,
296		/* boundary	*/	0,
297		/* lowaddr	*/	BUS_SPACE_MAXADDR_32BIT,
298		/* highaddr	*/	BUS_SPACE_MAXADDR,
299		/* filter	*/	NULL,
300		/* filterarg	*/	NULL,
301		/* maxsize	*/	MAXBSIZE,
302		/* nsegments	*/	IDA_NSEG,
303		/* maxsegsize	*/	BUS_SPACE_MAXSIZE_32BIT,
304		/* flags	*/	BUS_DMA_ALLOCNOW,
305		&ida->parent_dmat);
306
307	if (error != 0) {
308		device_printf(dev, "can't allocate DMA tag\n");
309		ida_free(ida);
310		return (ENOMEM);
311	}
312
313	rid = 0;
314	ida->irq_res_type = SYS_RES_IRQ;
315	ida->irq = bus_alloc_resource(dev, ida->irq_res_type, &rid,
316	    0, ~0, 1, RF_ACTIVE | RF_SHAREABLE);
317	if (ida->irq == NULL) {
318		ida_free(ida);
319		return (ENOMEM);
320	}
321
322	error = bus_setup_intr(dev, ida->irq, INTR_TYPE_BIO,
323	    ida_intr, ida, &ida->ih);
324	if (error) {
325		device_printf(dev, "can't setup interrupt\n");
326		ida_free(ida);
327		return (ENOMEM);
328	}
329
330	error = ida_init(ida);
331	if (error) {
332		ida_free(ida);
333		return (error);
334	}
335
336	ida_attach(ida);
337	ida->flags |= IDA_ATTACHED;
338
339	return (0);
340}
341
342DRIVER_MODULE(ida, eisa, ida_eisa_driver, ida_devclass, 0, 0);
343