1 /* $Id: imx31lk_pcic.c,v 1.6 2012/11/12 18:00:39 skrll Exp $ */
2 /* $NetBSD: imx31lk_pcic.c,v 1.6 2012/11/12 18:00:39 skrll Exp $ */
3 /* $OpenBSD: pxapcic.c,v 1.1 2005/07/01 23:51:55 uwe Exp $ */
4
5 /*
6 * Copyright (c) 2005 Uwe Stuehler <uwe@bsdx.de>
7 *
8 * Permission to use, copy, modify, and distribute this software for any
9 * purpose with or without fee is hereby granted, provided that the above
10 * copyright notice and this permission notice appear in all copies.
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 */
20
21 #include <sys/cdefs.h>
22 __KERNEL_RCSID(0, "$Id: imx31lk_pcic.c,v 1.6 2012/11/12 18:00:39 skrll Exp $");
23
24 #include <sys/param.h>
25 #include <sys/systm.h>
26 #include <sys/device.h>
27
28 #include <machine/intr.h>
29 #include <sys/bus.h>
30
31 #include <uvm/uvm.h>
32
33 #ifdef NOTYET
34 #include <arch/arm/imx/imx_emifs.h>
35 #include <arch/arm/imx/imx_gpio.h>
36 #endif
37 #include <arch/arm/imx/imx31var.h>
38 #include <arch/arm/imx/imx_pcic.h>
39
40
41 static int imx31lk_pcic_match(device_t, cfdata_t, void *);
42 static void imx31lk_pcic_attach(device_t, device_t, void *);
43
44 CFATTACH_DECL_NEW(imx31lk_pcic, sizeof(struct imx_pcic_softc),
45 imx31lk_pcic_match, imx31lk_pcic_attach, NULL, NULL);
46
47 static void imx31lk_pcic_socket_setup(struct imx_pcic_socket *);
48 static u_int imx31lk_pcic_read(struct imx_pcic_socket *, int);
49 static void imx31lk_pcic_write(struct imx_pcic_socket *, int, u_int);
50 static void imx31lk_pcic_set_power(struct imx_pcic_socket *, int);
51 static void imx31lk_pcic_clear_intr(struct imx_pcic_socket *);
52 static void *imx31lk_pcic_intr_establish(struct imx_pcic_socket *, int,
53 int (*)(void *), void *);
54 static void imx31lk_pcic_intr_disestablish(struct imx_pcic_socket *, void *);
55
56 struct imx_pcic_tag imx31lk_pcic_functions = {
57 imx31lk_pcic_read,
58 imx31lk_pcic_write,
59 imx31lk_pcic_set_power,
60 imx31lk_pcic_clear_intr,
61 imx31lk_pcic_intr_establish,
62 imx31lk_pcic_intr_disestablish
63 };
64
65 static int
imx31lk_pcic_match(device_t parent,cfdata_t cf,void * aux)66 imx31lk_pcic_match(device_t parent, cfdata_t cf, void *aux)
67 {
68
69 return 1; /* XXX */
70 }
71
72 static void
imx31lk_pcic_attach(device_t parent,device_t self,void * aux)73 imx31lk_pcic_attach(device_t parent, device_t self, void *aux)
74 {
75 struct imx_pcic_softc *sc = device_private(self);
76 struct aips_attach_args * const aipsa = aux;
77
78 sc->sc_dev = self;
79
80 printf("\n");
81 printf("imx_iot %p\n", aipsa->aipsa_memt);
82 printf("imx_addr %lx\n", aipsa->aipsa_addr);
83 printf("imx_size %lx\n", aipsa->aipsa_size);
84 printf("imx_intr %d\n", aipsa->aipsa_intr);
85
86 sc->sc_pa = aipsa->aipsa_addr;
87 sc->sc_iot = aipsa->aipsa_memt;
88
89 sc->sc_nslots = 1;
90 #ifdef NOTYET
91 sc->sc_irqpin[0] = aa->emifs_intr; /* XXX */
92 sc->sc_irqcfpin[0] = -1; /* XXX */
93 #endif
94
95 sc->sc_flags |= PPF_REVERSE_ORDER;
96
97 imx_pcic_attach_common(sc, &imx31lk_pcic_socket_setup);
98 }
99
100 static void
imx31lk_pcic_socket_setup(struct imx_pcic_socket * so)101 imx31lk_pcic_socket_setup(struct imx_pcic_socket *so)
102 {
103 struct imx_pcic_softc *sc;
104 bus_addr_t pa;
105 bus_size_t size = 0x2000; /* XXX */
106 bus_space_tag_t iot;
107 bus_space_handle_t imx31lkh;
108 int error;
109
110 sc = so->sc;
111 iot = sc->sc_iot;
112
113 if (so->socket != 0)
114 panic("%s: CF slot %d not supported", device_xname(sc->sc_dev), so->socket);
115
116 pa = sc->sc_pa;
117
118 error = bus_space_map(iot, trunc_page(pa), round_page(size),
119 0, &imx31lkh);
120 if (error) {
121 panic("%s: failed to map memory %x for imx31lk",
122 device_xname(sc->sc_dev), (uint32_t)pa);
123 }
124 imx31lkh += pa - trunc_page(pa);
125
126 #ifdef NOTYET
127 /* setup */
128 #endif
129
130 #ifdef NOTYET
131 so->power_capability = PXAPCIC_POWER_3V;
132 if (so->socket == 0)
133 so->power_capability |= PXAPCIC_POWER_5V;
134 #endif
135
136 so->pcictag_cookie = (void *)imx31lkh;
137 so->pcictag = &imx31lk_pcic_functions;
138 }
139
140 static u_int
imx31lk_pcic_read(struct imx_pcic_socket * so,int reg)141 imx31lk_pcic_read(struct imx_pcic_socket *so, int reg)
142 {
143 #ifdef NOTYET
144 bus_space_tag_t iot = so->sc->sc_iot;
145 bus_space_handle_t ioh = (bus_space_handle_t)so->pcictag_cookie;
146 uint16_t csr;
147
148 csr = bus_space_read_2(iot, ioh, SCOOP_CSR);
149
150 switch (reg) {
151 case PXAPCIC_CARD_STATUS:
152 if (csr & SCP_CSR_MISSING)
153 return (PXAPCIC_CARD_INVALID);
154 else
155 return (PXAPCIC_CARD_VALID);
156
157 case PXAPCIC_CARD_READY:
158 return ((bus_space_read_2(iot, ioh, SCOOP_CSR) &
159 SCP_CSR_READY) != 0);
160
161 default:
162 panic("imx31lk_pcic_read: bogus register");
163 }
164 /*NOTREACHED*/
165 #else
166 panic("imx31lk_pcic_read");
167 #endif
168 }
169
170 static void
imx31lk_pcic_write(struct imx_pcic_socket * so,int reg,u_int val)171 imx31lk_pcic_write(struct imx_pcic_socket *so, int reg, u_int val)
172 {
173 #ifdef NOTYET
174 bus_space_tag_t iot = so->sc->sc_iot;
175 bus_space_handle_t ioh = (bus_space_handle_t)so->pcictag_cookie;
176 uint16_t newval;
177 int s;
178
179 s = splhigh();
180
181 switch (reg) {
182 case PXAPCIC_CARD_POWER:
183 newval = bus_space_read_2(iot, ioh, SCOOP_CPR);
184 newval &= ~(SCP_CPR_PWR | SCP_CPR_3V | SCP_CPR_5V);
185
186 if (val == PXAPCIC_POWER_3V)
187 newval |= (SCP_CPR_PWR | SCP_CPR_3V);
188 else if (val == PXAPCIC_POWER_5V)
189 newval |= (SCP_CPR_PWR | SCP_CPR_5V);
190
191 bus_space_write_2(iot, ioh, SCOOP_CPR, newval);
192 break;
193
194 case PXAPCIC_CARD_RESET:
195 bus_space_write_2(iot, ioh, SCOOP_CCR,
196 val ? SCP_CCR_RESET : 0);
197 break;
198
199 default:
200 panic("imx31lk_pcic_write: bogus register");
201 }
202
203 splx(s);
204 #else
205 panic("imx31lk_pcic_write");
206 #endif
207 }
208
209 static void
imx31lk_pcic_set_power(struct imx_pcic_socket * so,int pwr)210 imx31lk_pcic_set_power(struct imx_pcic_socket *so, int pwr)
211 {
212 #ifdef NOTYET
213 bus_space_tag_t iot = so->sc->sc_iot;
214 bus_space_handle_t ioh = (bus_space_handle_t)so->pcictag_cookie;
215 uint16_t reg;
216 int s;
217
218 s = splhigh();
219
220 switch (pwr) {
221 case PXAPCIC_POWER_OFF:
222 #if 0
223 /* XXX does this disable power to both sockets? */
224 reg = bus_space_read_2(iot, ioh, SCOOP_GPWR);
225 bus_space_write_2(iot, ioh, SCOOP_GPWR,
226 reg & ~(1 << SCOOP0_CF_POWER_C3000));
227 #endif
228 break;
229
230 case PXAPCIC_POWER_3V:
231 case PXAPCIC_POWER_5V:
232 /* XXX */
233 if (so->socket == 0) {
234 reg = bus_space_read_2(iot, ioh, SCOOP_GPWR);
235 bus_space_write_2(iot, ioh, SCOOP_GPWR,
236 reg | (1 << SCOOP0_CF_POWER_C3000));
237 }
238 break;
239
240 default:
241 splx(s);
242 panic("imx31lk_pcic_set_power: bogus power state");
243 }
244
245 splx(s);
246 #else
247 panic("imx31lk_pcic_set_power");
248 #endif
249 }
250
251 static void
imx31lk_pcic_clear_intr(struct imx_pcic_socket * so)252 imx31lk_pcic_clear_intr(struct imx_pcic_socket *so)
253 {
254 #ifdef NOTYET
255 bus_space_tag_t iot = so->sc->sc_iot;
256 bus_space_handle_t ioh = (bus_space_handle_t)so->pcictag_cookie;
257
258 bus_space_write_2(iot, ioh, SCOOP_IRM, 0x00ff);
259 bus_space_write_2(iot, ioh, SCOOP_ISR, 0x0000);
260 bus_space_write_2(iot, ioh, SCOOP_IRM, 0x0000);
261 #else
262 panic("imx31lk_pcic_clear_intr");
263 #endif
264 }
265
266 static void *
imx31lk_pcic_intr_establish(struct imx_pcic_socket * so,int ipl,int (* func)(void *),void * arg)267 imx31lk_pcic_intr_establish(struct imx_pcic_socket *so, int ipl,
268 int (*func)(void *), void *arg)
269 {
270 #ifdef NOTYET
271 printf("%s: irqpin %d\n", __func__, so->irqpin);
272 return (imx_gpio_intr_establish(so->irqpin, IST_EDGE_FALLING,
273 ipl, "pcic", func, arg));
274 #else
275 return 0; /* XXX */
276 #endif
277 }
278
279 static void
imx31lk_pcic_intr_disestablish(struct imx_pcic_socket * so,void * ih)280 imx31lk_pcic_intr_disestablish(struct imx_pcic_socket *so, void *ih)
281 {
282
283 #ifdef NOTYET
284 imx_gpio_intr_disestablish(ih);
285 #endif
286 }
287