iodi.c revision 198625 
1/*-
2 * Copyright (c) 2003-2009 RMI Corporation
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 * 3. Neither the name of RMI Corporation, nor the names of its contributors,
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * RMI_BSD */
30
31#define __RMAN_RESOURCE_VISIBLE
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/bus.h>
35#include <sys/kernel.h>
36#include <sys/lock.h>
37#include <sys/mutex.h>
38#include <sys/reboot.h>
39#include <sys/types.h>
40#include <sys/malloc.h>
41#include <sys/bus.h>
42#include <sys/interrupt.h>
43#include <sys/module.h>
44
45#include <machine/cpu.h>
46#include <machine/bus.h>
47#include <machine/bus.h>
48#include <machine/intr_machdep.h>
49#include <mips/rmi/iomap.h>
50#include <mips/rmi/pic.h>
51#include <mips/rmi/shared_structs.h>
52#include <mips/rmi/board.h>
53#include <sys/rman.h>
54
55
56#include <machine/param.h>
57#include <machine/intr_machdep.h>
58#include <machine/clock.h>	/* for DELAY */
59#include <machine/bus.h>
60#include <machine/resource.h>
61#include <mips/rmi/interrupt.h>
62#include <mips/rmi/msgring.h>
63#include <mips/rmi/iomap.h>
64#include <mips/rmi/debug.h>
65#include <mips/rmi/pic.h>
66#include <mips/rmi/xlrconfig.h>
67#include <mips/rmi/shared_structs.h>
68#include <mips/rmi/board.h>
69
70#include <dev/rmi/xlr/atx_cpld.h>
71#include <dev/rmi/xlr/xgmac_mdio.h>
72
73extern void iodi_activateirqs(void);
74
75extern bus_space_tag_t uart_bus_space_mem;
76
77static struct resource *
78iodi_alloc_resource(device_t, device_t, int, int *,
79    u_long, u_long, u_long, u_int);
80
81static int
82iodi_activate_resource(device_t, device_t, int, int,
83    struct resource *);
84static int
85iodi_setup_intr(device_t, device_t, struct resource *, int,
86    driver_filter_t *, driver_intr_t *, void *, void **);
87
88struct iodi_softc *iodi_softc;	/* There can be only one. */
89
90/*
91static void pic_usb_ack(void *arg)
92{
93	xlr_reg_t *mmio = xlr_io_mmio(XLR_IO_PIC_OFFSET);
94	int irq = PIC_USB_IRQ ;
95
96	mtx_lock_spin(&xlr_pic_lock);
97	xlr_write_reg(mmio, PIC_INT_ACK, (1 << (irq - PIC_IRQ_BASE)));
98	mtx_unlock_spin(&xlr_pic_lock);
99}
100*/
101
102static int
103iodi_setup_intr(device_t dev, device_t child,
104    struct resource *ires, int flags, driver_filter_t * filt, driver_intr_t * intr, void *arg,
105    void **cookiep)
106{
107	int level;
108	xlr_reg_t *mmio = xlr_io_mmio(XLR_IO_PIC_OFFSET);
109	xlr_reg_t reg;
110
111	/* FIXME is this the right place to fiddle with PIC? */
112	if (strcmp(device_get_name(child), "uart") == 0) {
113		/* FIXME uart 1? */
114		mtx_lock_spin(&xlr_pic_lock);
115		level = PIC_IRQ_IS_EDGE_TRIGGERED(PIC_IRT_UART_0_INDEX);
116		xlr_write_reg(mmio, PIC_IRT_0_UART_0, 0x01);
117		xlr_write_reg(mmio, PIC_IRT_1_UART_0, ((1 << 31) | (level << 30) | (1 << 6) | (PIC_UART_0_IRQ)));
118		mtx_unlock_spin(&xlr_pic_lock);
119		cpu_establish_hardintr("uart", NULL,
120		    (driver_intr_t *) intr, (void *)arg, PIC_UART_0_IRQ, flags, cookiep);
121
122	} else if (strcmp(device_get_name(child), "rge") == 0) {
123		int irq;
124
125		irq = rman_get_rid(ires);
126		mtx_lock_spin(&xlr_pic_lock);
127		reg = xlr_read_reg(mmio, PIC_IRT_1_BASE + irq - PIC_IRQ_BASE);
128		xlr_write_reg(mmio, PIC_IRT_1_BASE + irq - PIC_IRQ_BASE, reg | (1 << 6) | (1 << 30) | (1 << 31));
129		mtx_unlock_spin(&xlr_pic_lock);
130		cpu_establish_hardintr("rge", NULL, (driver_intr_t *) intr, (void *)arg, irq, flags, cookiep);
131
132	} else if (strcmp(device_get_name(child), "ehci") == 0) {
133		mtx_lock_spin(&xlr_pic_lock);
134		reg = xlr_read_reg(mmio, PIC_IRT_1_BASE + PIC_USB_IRQ - PIC_IRQ_BASE);
135		xlr_write_reg(mmio, PIC_IRT_1_BASE + PIC_USB_IRQ - PIC_IRQ_BASE, reg | (1 << 6) | (1 << 30) | (1 << 31));
136		mtx_unlock_spin(&xlr_pic_lock);
137		cpu_establish_hardintr("ehci", NULL, (driver_intr_t *) intr, (void *)arg, PIC_USB_IRQ, flags, cookiep);
138	}
139	BUS_SETUP_INTR(device_get_parent(dev),
140	    child, ires, flags, filt, intr, arg, cookiep);
141
142
143	return (0);
144}
145
146/* Strange hook found in mips/include/bus.h */
147#ifndef MIPS_BUS_SPACE_PCI
148#define MIPS_BUS_SPACE_PCI	10
149#endif
150
151static struct resource *
152iodi_alloc_resource(device_t bus, device_t child, int type, int *rid,
153    u_long start, u_long end, u_long count, u_int flags)
154{
155	struct resource *res = malloc(sizeof(*res), M_DEVBUF, M_WAITOK);
156	int unit;
157
158#ifdef DEBUG
159	switch (type) {
160	case SYS_RES_IRQ:
161		device_printf(bus, "IRQ resource - for %s %lx-%lx\n",
162		    device_get_nameunit(child), start, end);
163		break;
164
165	case SYS_RES_IOPORT:
166		device_printf(bus, "IOPORT resource - for %s %lx-%lx\n",
167		    device_get_nameunit(child), start, end);
168		break;
169
170	case SYS_RES_MEMORY:
171		device_printf(bus, "MEMORY resource - for %s %lx-%lx\n",
172		    device_get_nameunit(child), start, end);
173		break;
174	}
175#endif
176
177	if (strcmp(device_get_name(child), "uart") == 0) {
178		if ((unit = device_get_unit(child)) == 0) {	/* uart 0 */
179			res->r_bushandle = (xlr_io_base + XLR_IO_UART_0_OFFSET);
180		} else if (unit == 1) {
181			res->r_bushandle = (xlr_io_base + XLR_IO_UART_1_OFFSET);
182		} else
183			printf("%s: Unknown uart unit\n", __FUNCTION__);
184
185		res->r_bustag = uart_bus_space_mem;
186	} else if (strcmp(device_get_name(child), "ehci") == 0) {
187		res->r_bushandle = 0xbef24000;
188		res->r_bustag = (bus_space_tag_t) MIPS_BUS_SPACE_PCI;
189	} else if (strcmp(device_get_name(child), "cfi") == 0) {
190		res->r_bushandle = 0xbc000000;
191		res->r_bustag = 0;
192	}
193	/* res->r_start = *rid; */
194	return (res);
195}
196
197static int
198iodi_activate_resource(device_t bus, device_t child, int type, int rid,
199    struct resource *r)
200{
201	return (0);
202}
203
204/* prototypes */
205static int iodi_probe(device_t);
206static int iodi_attach(device_t);
207static void iodi_identify(driver_t *, device_t);
208
209int
210iodi_probe(device_t dev)
211{
212	return 0;
213}
214
215void
216iodi_identify(driver_t * driver, device_t parent)
217{
218
219	BUS_ADD_CHILD(parent, 0, "iodi", 0);
220}
221
222int
223iodi_attach(device_t dev)
224{
225	device_t tmpd;
226
227	/*
228	 * Attach each devices
229	 */
230	device_add_child(dev, "uart", 0);
231	device_add_child(dev, "xlr_i2c", 0);
232
233	if (xlr_board_info.usb)
234		device_add_child(dev, "ehci", 0);
235
236	if (xlr_board_info.cfi)
237		device_add_child(dev, "cfi", 0);
238
239	if (xlr_board_info.gmac_block[0].enabled) {
240		tmpd = device_add_child(dev, "rge", 0);
241		device_set_ivars(tmpd, &xlr_board_info.gmac_block[0]);
242
243		tmpd = device_add_child(dev, "rge", 1);
244		device_set_ivars(tmpd, &xlr_board_info.gmac_block[0]);
245
246		tmpd = device_add_child(dev, "rge", 2);
247		device_set_ivars(tmpd, &xlr_board_info.gmac_block[0]);
248
249		tmpd = device_add_child(dev, "rge", 3);
250		device_set_ivars(tmpd, &xlr_board_info.gmac_block[0]);
251	}
252	if (xlr_board_info.gmac_block[1].enabled) {
253		if (xlr_board_info.gmac_block[1].type == XLR_GMAC) {
254			tmpd = device_add_child(dev, "rge", 4);
255			device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);
256
257			tmpd = device_add_child(dev, "rge", 5);
258			device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);
259
260			tmpd = device_add_child(dev, "rge", 6);
261			device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);
262
263			tmpd = device_add_child(dev, "rge", 7);
264			device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);
265		} else if (xlr_board_info.gmac_block[1].type == XLR_XGMAC) {
266#if 0				/* XGMAC not yet */
267			tmpd = device_add_child(dev, "rge", 4);
268			device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);
269
270			tmpd = device_add_child(dev, "rge", 5);
271			device_set_ivars(tmpd, &xlr_board_info.gmac_block[1]);
272#endif
273		} else
274			device_printf(dev, "Unknown type of gmac 1\n");
275	}
276	bus_generic_probe(dev);
277	bus_generic_attach(dev);
278	return 0;
279}
280
281static device_method_t iodi_methods[] = {
282	DEVMETHOD(device_probe, iodi_probe),
283	DEVMETHOD(device_attach, iodi_attach),
284	DEVMETHOD(device_identify, iodi_identify),
285	DEVMETHOD(bus_alloc_resource, iodi_alloc_resource),
286	DEVMETHOD(bus_activate_resource, iodi_activate_resource),
287	DEVMETHOD(bus_setup_intr, iodi_setup_intr),
288	{0, 0},
289};
290
291static driver_t iodi_driver = {
292	"iodi",
293	iodi_methods,
294	1			/* no softc */
295};
296static devclass_t iodi_devclass;
297
298DRIVER_MODULE(iodi, nexus, iodi_driver, iodi_devclass, 0, 0);
299