imx31lk_pcic.c revision 1.1.24.1 1 1.1.24.1 yamt /* $Id: imx31lk_pcic.c,v 1.1.24.1 2008/05/16 02:22:13 yamt Exp $ */
2 1.1.24.1 yamt /* $NetBSD: imx31lk_pcic.c,v 1.1.24.1 2008/05/16 02:22:13 yamt Exp $ */
3 1.1.24.1 yamt /* $OpenBSD: pxapcic.c,v 1.1 2005/07/01 23:51:55 uwe Exp $ */
4 1.1.24.1 yamt
5 1.1.24.1 yamt /*
6 1.1.24.1 yamt * Copyright (c) 2005 Uwe Stuehler <uwe (at) bsdx.de>
7 1.1.24.1 yamt *
8 1.1.24.1 yamt * Permission to use, copy, modify, and distribute this software for any
9 1.1.24.1 yamt * purpose with or without fee is hereby granted, provided that the above
10 1.1.24.1 yamt * copyright notice and this permission notice appear in all copies.
11 1.1.24.1 yamt *
12 1.1.24.1 yamt * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 1.1.24.1 yamt * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 1.1.24.1 yamt * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 1.1.24.1 yamt * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 1.1.24.1 yamt * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 1.1.24.1 yamt * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 1.1.24.1 yamt * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 1.1.24.1 yamt */
20 1.1.24.1 yamt
21 1.1.24.1 yamt #include <sys/cdefs.h>
22 1.1.24.1 yamt __KERNEL_RCSID(0, "$Id: imx31lk_pcic.c,v 1.1.24.1 2008/05/16 02:22:13 yamt Exp $");
23 1.1.24.1 yamt
24 1.1.24.1 yamt #include <sys/param.h>
25 1.1.24.1 yamt #include <sys/systm.h>
26 1.1.24.1 yamt #include <sys/device.h>
27 1.1.24.1 yamt
28 1.1.24.1 yamt #include <machine/intr.h>
29 1.1.24.1 yamt #include <machine/bus.h>
30 1.1.24.1 yamt
31 1.1.24.1 yamt #include <uvm/uvm.h>
32 1.1.24.1 yamt
33 1.1.24.1 yamt #ifdef NOTYET
34 1.1.24.1 yamt #include <arch/arm/imx/imx_emifs.h>
35 1.1.24.1 yamt #include <arch/arm/imx/imx_gpio.h>
36 1.1.24.1 yamt #endif
37 1.1.24.1 yamt #include <arch/arm/imx/imx31var.h>
38 1.1.24.1 yamt #include <arch/arm/imx/imx_pcic.h>
39 1.1.24.1 yamt
40 1.1.24.1 yamt
41 1.1.24.1 yamt static int imx31lk_pcic_match(struct device *, struct cfdata *, void *);
42 1.1.24.1 yamt static void imx31lk_pcic_attach(struct device *, struct device *, void *);
43 1.1.24.1 yamt
44 1.1.24.1 yamt CFATTACH_DECL(imx31lk_pcic, sizeof(struct imx_pcic_softc),
45 1.1.24.1 yamt imx31lk_pcic_match, imx31lk_pcic_attach, NULL, NULL);
46 1.1.24.1 yamt
47 1.1.24.1 yamt static void imx31lk_pcic_socket_setup(struct imx_pcic_socket *);
48 1.1.24.1 yamt static u_int imx31lk_pcic_read(struct imx_pcic_socket *, int);
49 1.1.24.1 yamt static void imx31lk_pcic_write(struct imx_pcic_socket *, int, u_int);
50 1.1.24.1 yamt static void imx31lk_pcic_set_power(struct imx_pcic_socket *, int);
51 1.1.24.1 yamt static void imx31lk_pcic_clear_intr(struct imx_pcic_socket *);
52 1.1.24.1 yamt static void *imx31lk_pcic_intr_establish(struct imx_pcic_socket *, int,
53 1.1.24.1 yamt int (*)(void *), void *);
54 1.1.24.1 yamt static void imx31lk_pcic_intr_disestablish(struct imx_pcic_socket *, void *);
55 1.1.24.1 yamt
56 1.1.24.1 yamt struct imx_pcic_tag imx31lk_pcic_functions = {
57 1.1.24.1 yamt imx31lk_pcic_read,
58 1.1.24.1 yamt imx31lk_pcic_write,
59 1.1.24.1 yamt imx31lk_pcic_set_power,
60 1.1.24.1 yamt imx31lk_pcic_clear_intr,
61 1.1.24.1 yamt imx31lk_pcic_intr_establish,
62 1.1.24.1 yamt imx31lk_pcic_intr_disestablish
63 1.1.24.1 yamt };
64 1.1.24.1 yamt
65 1.1.24.1 yamt static int
66 1.1.24.1 yamt imx31lk_pcic_match(struct device *parent, struct cfdata *cf, void *aux)
67 1.1.24.1 yamt {
68 1.1.24.1 yamt
69 1.1.24.1 yamt return 1; /* XXX */
70 1.1.24.1 yamt }
71 1.1.24.1 yamt
72 1.1.24.1 yamt static void
73 1.1.24.1 yamt imx31lk_pcic_attach(struct device *parent, struct device *self, void *aux)
74 1.1.24.1 yamt {
75 1.1.24.1 yamt struct imx_pcic_softc *sc = (struct imx_pcic_softc *)self;
76 1.1.24.1 yamt struct aips_attach_args * const aipsa = aux;
77 1.1.24.1 yamt
78 1.1.24.1 yamt printf("\n");
79 1.1.24.1 yamt printf("imx_iot %p\n", aipsa->aipsa_memt);
80 1.1.24.1 yamt printf("imx_addr %lx\n", aipsa->aipsa_addr);
81 1.1.24.1 yamt printf("imx_size %lx\n", aipsa->aipsa_size);
82 1.1.24.1 yamt printf("imx_intr %d\n", aipsa->aipsa_intr);
83 1.1.24.1 yamt
84 1.1.24.1 yamt sc->sc_pa = aipsa->aipsa_addr;
85 1.1.24.1 yamt sc->sc_iot = aipsa->aipsa_memt;
86 1.1.24.1 yamt
87 1.1.24.1 yamt sc->sc_nslots = 1;
88 1.1.24.1 yamt #ifdef NOTYET
89 1.1.24.1 yamt sc->sc_irqpin[0] = aa->emifs_intr; /* XXX */
90 1.1.24.1 yamt sc->sc_irqcfpin[0] = -1; /* XXX */
91 1.1.24.1 yamt #endif
92 1.1.24.1 yamt
93 1.1.24.1 yamt sc->sc_flags |= PPF_REVERSE_ORDER;
94 1.1.24.1 yamt
95 1.1.24.1 yamt imx_pcic_attach_common(sc, &imx31lk_pcic_socket_setup);
96 1.1.24.1 yamt }
97 1.1.24.1 yamt
98 1.1.24.1 yamt static void
99 1.1.24.1 yamt imx31lk_pcic_socket_setup(struct imx_pcic_socket *so)
100 1.1.24.1 yamt {
101 1.1.24.1 yamt struct imx_pcic_softc *sc;
102 1.1.24.1 yamt bus_addr_t pa;
103 1.1.24.1 yamt bus_size_t size = 0x2000; /* XXX */
104 1.1.24.1 yamt bus_space_tag_t iot;
105 1.1.24.1 yamt bus_space_handle_t imx31lkh;
106 1.1.24.1 yamt int error;
107 1.1.24.1 yamt
108 1.1.24.1 yamt sc = so->sc;
109 1.1.24.1 yamt iot = sc->sc_iot;
110 1.1.24.1 yamt
111 1.1.24.1 yamt if (so->socket != 0)
112 1.1.24.1 yamt panic("%s: CF slot %d not supported", sc->sc_dev.dv_xname, so->socket);
113 1.1.24.1 yamt
114 1.1.24.1 yamt pa = sc->sc_pa;
115 1.1.24.1 yamt
116 1.1.24.1 yamt error = bus_space_map(iot, trunc_page(pa), round_page(size),
117 1.1.24.1 yamt 0, &imx31lkh);
118 1.1.24.1 yamt if (error) {
119 1.1.24.1 yamt panic("%s: failed to map memory %x for imx31lk",
120 1.1.24.1 yamt sc->sc_dev.dv_xname, (uint32_t)pa);
121 1.1.24.1 yamt }
122 1.1.24.1 yamt imx31lkh += pa - trunc_page(pa);
123 1.1.24.1 yamt
124 1.1.24.1 yamt #ifdef NOTYET
125 1.1.24.1 yamt /* setup */
126 1.1.24.1 yamt #endif
127 1.1.24.1 yamt
128 1.1.24.1 yamt #ifdef NOTYET
129 1.1.24.1 yamt so->power_capability = PXAPCIC_POWER_3V;
130 1.1.24.1 yamt if (so->socket == 0)
131 1.1.24.1 yamt so->power_capability |= PXAPCIC_POWER_5V;
132 1.1.24.1 yamt #endif
133 1.1.24.1 yamt
134 1.1.24.1 yamt so->pcictag_cookie = (void *)imx31lkh;
135 1.1.24.1 yamt so->pcictag = &imx31lk_pcic_functions;
136 1.1.24.1 yamt }
137 1.1.24.1 yamt
138 1.1.24.1 yamt static u_int
139 1.1.24.1 yamt imx31lk_pcic_read(struct imx_pcic_socket *so, int reg)
140 1.1.24.1 yamt {
141 1.1.24.1 yamt #ifdef NOTYET
142 1.1.24.1 yamt bus_space_tag_t iot = so->sc->sc_iot;
143 1.1.24.1 yamt bus_space_handle_t ioh = (bus_space_handle_t)so->pcictag_cookie;
144 1.1.24.1 yamt uint16_t csr;
145 1.1.24.1 yamt
146 1.1.24.1 yamt csr = bus_space_read_2(iot, ioh, SCOOP_CSR);
147 1.1.24.1 yamt
148 1.1.24.1 yamt switch (reg) {
149 1.1.24.1 yamt case PXAPCIC_CARD_STATUS:
150 1.1.24.1 yamt if (csr & SCP_CSR_MISSING)
151 1.1.24.1 yamt return (PXAPCIC_CARD_INVALID);
152 1.1.24.1 yamt else
153 1.1.24.1 yamt return (PXAPCIC_CARD_VALID);
154 1.1.24.1 yamt
155 1.1.24.1 yamt case PXAPCIC_CARD_READY:
156 1.1.24.1 yamt return ((bus_space_read_2(iot, ioh, SCOOP_CSR) &
157 1.1.24.1 yamt SCP_CSR_READY) != 0);
158 1.1.24.1 yamt
159 1.1.24.1 yamt default:
160 1.1.24.1 yamt panic("imx31lk_pcic_read: bogus register");
161 1.1.24.1 yamt }
162 1.1.24.1 yamt /*NOTREACHED*/
163 1.1.24.1 yamt #else
164 1.1.24.1 yamt panic("imx31lk_pcic_read");
165 1.1.24.1 yamt #endif
166 1.1.24.1 yamt }
167 1.1.24.1 yamt
168 1.1.24.1 yamt static void
169 1.1.24.1 yamt imx31lk_pcic_write(struct imx_pcic_socket *so, int reg, u_int val)
170 1.1.24.1 yamt {
171 1.1.24.1 yamt #ifdef NOTYET
172 1.1.24.1 yamt bus_space_tag_t iot = so->sc->sc_iot;
173 1.1.24.1 yamt bus_space_handle_t ioh = (bus_space_handle_t)so->pcictag_cookie;
174 1.1.24.1 yamt uint16_t newval;
175 1.1.24.1 yamt int s;
176 1.1.24.1 yamt
177 1.1.24.1 yamt s = splhigh();
178 1.1.24.1 yamt
179 1.1.24.1 yamt switch (reg) {
180 1.1.24.1 yamt case PXAPCIC_CARD_POWER:
181 1.1.24.1 yamt newval = bus_space_read_2(iot, ioh, SCOOP_CPR);
182 1.1.24.1 yamt newval &= ~(SCP_CPR_PWR | SCP_CPR_3V | SCP_CPR_5V);
183 1.1.24.1 yamt
184 1.1.24.1 yamt if (val == PXAPCIC_POWER_3V)
185 1.1.24.1 yamt newval |= (SCP_CPR_PWR | SCP_CPR_3V);
186 1.1.24.1 yamt else if (val == PXAPCIC_POWER_5V)
187 1.1.24.1 yamt newval |= (SCP_CPR_PWR | SCP_CPR_5V);
188 1.1.24.1 yamt
189 1.1.24.1 yamt bus_space_write_2(iot, ioh, SCOOP_CPR, newval);
190 1.1.24.1 yamt break;
191 1.1.24.1 yamt
192 1.1.24.1 yamt case PXAPCIC_CARD_RESET:
193 1.1.24.1 yamt bus_space_write_2(iot, ioh, SCOOP_CCR,
194 1.1.24.1 yamt val ? SCP_CCR_RESET : 0);
195 1.1.24.1 yamt break;
196 1.1.24.1 yamt
197 1.1.24.1 yamt default:
198 1.1.24.1 yamt panic("imx31lk_pcic_write: bogus register");
199 1.1.24.1 yamt }
200 1.1.24.1 yamt
201 1.1.24.1 yamt splx(s);
202 1.1.24.1 yamt #else
203 1.1.24.1 yamt panic("imx31lk_pcic_write");
204 1.1.24.1 yamt #endif
205 1.1.24.1 yamt }
206 1.1.24.1 yamt
207 1.1.24.1 yamt static void
208 1.1.24.1 yamt imx31lk_pcic_set_power(struct imx_pcic_socket *so, int pwr)
209 1.1.24.1 yamt {
210 1.1.24.1 yamt #ifdef NOTYET
211 1.1.24.1 yamt bus_space_tag_t iot = so->sc->sc_iot;
212 1.1.24.1 yamt bus_space_handle_t ioh = (bus_space_handle_t)so->pcictag_cookie;
213 1.1.24.1 yamt u_int16_t reg;
214 1.1.24.1 yamt int s;
215 1.1.24.1 yamt
216 1.1.24.1 yamt s = splhigh();
217 1.1.24.1 yamt
218 1.1.24.1 yamt switch (pwr) {
219 1.1.24.1 yamt case PXAPCIC_POWER_OFF:
220 1.1.24.1 yamt #if 0
221 1.1.24.1 yamt /* XXX does this disable power to both sockets? */
222 1.1.24.1 yamt reg = bus_space_read_2(iot, ioh, SCOOP_GPWR);
223 1.1.24.1 yamt bus_space_write_2(iot, ioh, SCOOP_GPWR,
224 1.1.24.1 yamt reg & ~(1 << SCOOP0_CF_POWER_C3000));
225 1.1.24.1 yamt #endif
226 1.1.24.1 yamt break;
227 1.1.24.1 yamt
228 1.1.24.1 yamt case PXAPCIC_POWER_3V:
229 1.1.24.1 yamt case PXAPCIC_POWER_5V:
230 1.1.24.1 yamt /* XXX */
231 1.1.24.1 yamt if (so->socket == 0) {
232 1.1.24.1 yamt reg = bus_space_read_2(iot, ioh, SCOOP_GPWR);
233 1.1.24.1 yamt bus_space_write_2(iot, ioh, SCOOP_GPWR,
234 1.1.24.1 yamt reg | (1 << SCOOP0_CF_POWER_C3000));
235 1.1.24.1 yamt }
236 1.1.24.1 yamt break;
237 1.1.24.1 yamt
238 1.1.24.1 yamt default:
239 1.1.24.1 yamt splx(s);
240 1.1.24.1 yamt panic("imx31lk_pcic_set_power: bogus power state");
241 1.1.24.1 yamt }
242 1.1.24.1 yamt
243 1.1.24.1 yamt splx(s);
244 1.1.24.1 yamt #else
245 1.1.24.1 yamt panic("imx31lk_pcic_set_power");
246 1.1.24.1 yamt #endif
247 1.1.24.1 yamt }
248 1.1.24.1 yamt
249 1.1.24.1 yamt static void
250 1.1.24.1 yamt imx31lk_pcic_clear_intr(struct imx_pcic_socket *so)
251 1.1.24.1 yamt {
252 1.1.24.1 yamt #ifdef NOTYET
253 1.1.24.1 yamt bus_space_tag_t iot = so->sc->sc_iot;
254 1.1.24.1 yamt bus_space_handle_t ioh = (bus_space_handle_t)so->pcictag_cookie;
255 1.1.24.1 yamt
256 1.1.24.1 yamt bus_space_write_2(iot, ioh, SCOOP_IRM, 0x00ff);
257 1.1.24.1 yamt bus_space_write_2(iot, ioh, SCOOP_ISR, 0x0000);
258 1.1.24.1 yamt bus_space_write_2(iot, ioh, SCOOP_IRM, 0x0000);
259 1.1.24.1 yamt #else
260 1.1.24.1 yamt panic("imx31lk_pcic_clear_intr");
261 1.1.24.1 yamt #endif
262 1.1.24.1 yamt }
263 1.1.24.1 yamt
264 1.1.24.1 yamt static void *
265 1.1.24.1 yamt imx31lk_pcic_intr_establish(struct imx_pcic_socket *so, int ipl,
266 1.1.24.1 yamt int (*func)(void *), void *arg)
267 1.1.24.1 yamt {
268 1.1.24.1 yamt #ifdef NOTYET
269 1.1.24.1 yamt printf("%s: irqpin %d\n", __FUNCTION__, so->irqpin);
270 1.1.24.1 yamt return (imx_gpio_intr_establish(so->irqpin, IST_EDGE_FALLING,
271 1.1.24.1 yamt ipl, "pcic", func, arg));
272 1.1.24.1 yamt #else
273 1.1.24.1 yamt return 0; /* XXX */
274 1.1.24.1 yamt #endif
275 1.1.24.1 yamt }
276 1.1.24.1 yamt
277 1.1.24.1 yamt static void
278 1.1.24.1 yamt imx31lk_pcic_intr_disestablish(struct imx_pcic_socket *so, void *ih)
279 1.1.24.1 yamt {
280 1.1.24.1 yamt
281 1.1.24.1 yamt #ifdef NOTYET
282 1.1.24.1 yamt imx_gpio_intr_disestablish(ih);
283 1.1.24.1 yamt #endif
284 1.1.24.1 yamt }
285