ida_pci.c revision 57828 
1/*-
2 * Copyright (c) 1999,2000 Jonathan Lemon
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/dev/ida/ida_pci.c 57828 2000-03-08 16:16:31Z jlemon $
27 */
28
29#include <sys/param.h>
30#include <sys/systm.h>
31#include <sys/malloc.h>
32#include <sys/kernel.h>
33
34#include <sys/buf.h>
35#include <sys/bus.h>
36#include <sys/devicestat.h>
37#include <sys/disk.h>
38
39#include <machine/bus_memio.h>
40#include <machine/bus_pio.h>
41#include <machine/bus.h>
42#include <machine/resource.h>
43#include <sys/rman.h>
44
45#include <pci/pcireg.h>
46#include <pci/pcivar.h>
47
48#include <dev/ida/idavar.h>
49#include <dev/ida/idareg.h>
50
51#define IDA_PCI_MAX_DMA_ADDR	0xFFFFFFFF
52#define IDA_PCI_MAX_DMA_COUNT	0xFFFFFFFF
53
54#define IDA_PCI_MEMADDR		(PCIR_MAPS + 4)		/* Mem I/O Address */
55
56#define IDA_DEVICEID_SMART	0xAE100E11
57
58static int
59ida_v3_fifo_full(struct ida_softc *ida)
60{
61	return (ida_inl(ida, R_CMD_FIFO) == 0);
62}
63
64static void
65ida_v3_submit(struct ida_softc *ida, struct ida_qcb *qcb)
66{
67	ida_outl(ida, R_CMD_FIFO, qcb->hwqcb_busaddr);
68}
69
70static bus_addr_t
71ida_v3_done(struct ida_softc *ida)
72{
73	return (ida_inl(ida, R_DONE_FIFO));
74}
75
76static int
77ida_v3_int_pending(struct ida_softc *ida)
78{
79	return (ida_inl(ida, R_INT_PENDING));
80}
81
82static void
83ida_v3_int_enable(struct ida_softc *ida, int enable)
84{
85	ida_outl(ida, R_INT_MASK, enable ? INT_ENABLE : INT_DISABLE);
86}
87
88static int
89ida_v4_fifo_full(struct ida_softc *ida)
90{
91	return (ida_inl(ida, R_42XX_REQUEST) != 0);
92}
93
94static void
95ida_v4_submit(struct ida_softc *ida, struct ida_qcb *qcb)
96{
97	ida_outl(ida, R_42XX_REQUEST, qcb->hwqcb_busaddr);
98}
99
100static bus_addr_t
101ida_v4_done(struct ida_softc *ida)
102{
103	bus_addr_t completed;
104
105	completed = ida_inl(ida, R_42XX_REPLY);
106	if (completed == -1)
107		return (0);			/* fifo is empty */
108	ida_outl(ida, R_42XX_REPLY, 0);		/* confirm read */
109	return (completed);
110}
111
112static int
113ida_v4_int_pending(struct ida_softc *ida)
114{
115	return (ida_inl(ida, R_42XX_STATUS) & STATUS_42XX_INT_PENDING);
116}
117
118static void
119ida_v4_int_enable(struct ida_softc *ida, int enable)
120{
121	ida_outl(ida, R_42XX_INT_MASK,
122	    enable ? INT_ENABLE_42XX : INT_DISABLE_42XX);
123}
124
125static struct ida_access ida_v3_access = {
126	ida_v3_fifo_full,
127	ida_v3_submit,
128	ida_v3_done,
129	ida_v3_int_pending,
130	ida_v3_int_enable,
131};
132
133static struct ida_access ida_v4_access = {
134	ida_v4_fifo_full,
135	ida_v4_submit,
136	ida_v4_done,
137	ida_v4_int_pending,
138	ida_v4_int_enable,
139};
140
141static struct ida_board board_id[] = {
142	{ 0x4030, "Compaq SMART-2/P array controller",	    &ida_v3_access },
143	{ 0x4031, "Compaq SMART-2SL array controller", 	    &ida_v3_access },
144	{ 0x4032, "Compaq Smart Array 3200 controller",	    &ida_v3_access },
145	{ 0x4033, "Compaq Smart Array 3100ES controller",   &ida_v3_access },
146	{ 0x4034, "Compaq Smart Array 221 controller",	    &ida_v3_access },
147
148	{ 0x4040, "Compaq Integrated Array controller",	    &ida_v4_access },
149	{ 0x4050, "Compaq Smart Array 4200 controller",	    &ida_v4_access },
150	{ 0x4051, "Compaq Smart Array 4250ES controller",   &ida_v4_access },
151
152	{ 0, "", 0 },
153};
154
155static int ida_pci_probe(device_t dev);
156static int ida_pci_attach(device_t dev);
157
158static device_method_t ida_pci_methods[] = {
159	DEVMETHOD(device_probe,		ida_pci_probe),
160	DEVMETHOD(device_attach,	ida_pci_attach),
161	DEVMETHOD(device_detach,	ida_detach),
162
163	DEVMETHOD(bus_print_child,	bus_generic_print_child),
164
165	{ 0, 0 }
166};
167
168static driver_t ida_pci_driver = {
169	"ida",
170	ida_pci_methods,
171	sizeof(struct ida_softc)
172};
173
174static devclass_t ida_devclass;
175
176static struct ida_board *
177ida_pci_match(u_int32_t id)
178{
179	int i;
180
181	for (i = 0; board_id[i].board; i++)
182		if (board_id[i].board == id)
183			return (&board_id[i]);
184	return (NULL);
185}
186
187static int
188ida_pci_probe(device_t dev)
189{
190	struct ida_board *board;
191
192	if (pci_get_devid(dev) == IDA_DEVICEID_SMART) {
193		board = ida_pci_match(pci_get_subdevice(dev));
194		if (board != NULL) {
195			device_set_desc(dev, board->desc);
196			return (0);
197		}
198	}
199	return (ENXIO);
200}
201
202static int
203ida_pci_attach(device_t dev)
204{
205	struct ida_board *board;
206	struct ida_softc *ida;
207	u_int command;
208	int error, rid;
209
210	command = pci_read_config(dev, PCIR_COMMAND, 1);
211
212	/*
213	 * it appears that this board only does MEMIO access.
214	 */
215	if ((command & PCIM_CMD_MEMEN) == 0) {
216                device_printf(dev, "Only memory mapped I/O is supported\n");
217		return (ENXIO);
218	}
219
220	ida = (struct ida_softc *)device_get_softc(dev);
221	ida->dev = dev;
222
223	board = ida_pci_match(pci_get_subdevice(dev));
224	ida->cmd = *board->accessor;
225
226	ida->regs_res_type = SYS_RES_MEMORY;
227	ida->regs_res_id = IDA_PCI_MEMADDR;
228	ida->regs = bus_alloc_resource(dev, ida->regs_res_type,
229	    &ida->regs_res_id, 0, ~0, 1, RF_ACTIVE);
230	if (ida->regs == NULL) {
231		device_printf(dev, "can't allocate register resources\n");
232		return (ENOMEM);
233	}
234
235	error = bus_dma_tag_create(/*parent*/NULL, /*alignment*/1,
236	    /*boundary*/0, /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
237	    /*highaddr*/BUS_SPACE_MAXADDR, /*filter*/NULL, /*filterarg*/NULL,
238	    /*maxsize*/MAXBSIZE, /*nsegments*/IDA_NSEG,
239	    /*maxsegsize*/BUS_SPACE_MAXSIZE_32BIT, /*flags*/BUS_DMA_ALLOCNOW,
240	    &ida->parent_dmat);
241	if (error != 0) {
242		device_printf(dev, "can't allocate DMA tag\n");
243		ida_free(ida);
244		return (ENOMEM);
245	}
246
247	rid = 0;
248        ida->irq_res_type = SYS_RES_IRQ;
249	ida->irq = bus_alloc_resource(dev, ida->irq_res_type, &rid,
250	    0, ~0, 1, RF_ACTIVE | RF_SHAREABLE);
251        if (ida->irq == NULL) {
252                ida_free(ida);
253                return (ENOMEM);
254        }
255	error = bus_setup_intr(dev, ida->irq, INTR_TYPE_BIO,
256	    ida_intr, ida, &ida->ih);
257	if (error) {
258		device_printf(dev, "can't setup interrupt\n");
259		ida_free(ida);
260		return (ENOMEM);
261	}
262
263	error = ida_init(ida);
264	if (error) {
265                ida_free(ida);
266                return (error);
267        }
268	ida_attach(ida);
269	ida->flags = IDA_ATTACHED;
270
271	return (0);
272}
273
274DRIVER_MODULE(ida, pci, ida_pci_driver, ida_devclass, 0, 0);
275