1 /*
2 * Intel XScale PXA255/270 PC Card and CompactFlash Interface.
3 *
4 * Copyright (c) 2006 Openedhand Ltd.
5 * Written by Andrzej Zaborowski <balrog@zabor.org>
6 *
7 * This code is licensed under the GPLv2.
8 *
9 * Contributions after 2012-01-13 are licensed under the terms of the
10 * GNU GPL, version 2 or (at your option) any later version.
11 */
12
13 #include "qemu/osdep.h"
14 #include "hw/irq.h"
15 #include "hw/sysbus.h"
16 #include "qapi/error.h"
17 #include "qemu/module.h"
18 #include "hw/pcmcia.h"
19 #include "hw/arm/pxa.h"
20
21 struct PXA2xxPCMCIAState {
22 SysBusDevice parent_obj;
23
24 PCMCIASocket slot;
25 MemoryRegion container_mem;
26 MemoryRegion common_iomem;
27 MemoryRegion attr_iomem;
28 MemoryRegion iomem;
29
30 qemu_irq irq;
31 qemu_irq cd_irq;
32
33 PCMCIACardState *card;
34 };
35
pxa2xx_pcmcia_common_read(void * opaque,hwaddr offset,unsigned size)36 static uint64_t pxa2xx_pcmcia_common_read(void *opaque,
37 hwaddr offset, unsigned size)
38 {
39 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
40 PCMCIACardClass *pcc;
41
42 if (s->slot.attached) {
43 pcc = PCMCIA_CARD_GET_CLASS(s->card);
44 return pcc->common_read(s->card, offset);
45 }
46
47 return 0;
48 }
49
pxa2xx_pcmcia_common_write(void * opaque,hwaddr offset,uint64_t value,unsigned size)50 static void pxa2xx_pcmcia_common_write(void *opaque, hwaddr offset,
51 uint64_t value, unsigned size)
52 {
53 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
54 PCMCIACardClass *pcc;
55
56 if (s->slot.attached) {
57 pcc = PCMCIA_CARD_GET_CLASS(s->card);
58 pcc->common_write(s->card, offset, value);
59 }
60 }
61
pxa2xx_pcmcia_attr_read(void * opaque,hwaddr offset,unsigned size)62 static uint64_t pxa2xx_pcmcia_attr_read(void *opaque,
63 hwaddr offset, unsigned size)
64 {
65 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
66 PCMCIACardClass *pcc;
67
68 if (s->slot.attached) {
69 pcc = PCMCIA_CARD_GET_CLASS(s->card);
70 return pcc->attr_read(s->card, offset);
71 }
72
73 return 0;
74 }
75
pxa2xx_pcmcia_attr_write(void * opaque,hwaddr offset,uint64_t value,unsigned size)76 static void pxa2xx_pcmcia_attr_write(void *opaque, hwaddr offset,
77 uint64_t value, unsigned size)
78 {
79 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
80 PCMCIACardClass *pcc;
81
82 if (s->slot.attached) {
83 pcc = PCMCIA_CARD_GET_CLASS(s->card);
84 pcc->attr_write(s->card, offset, value);
85 }
86 }
87
pxa2xx_pcmcia_io_read(void * opaque,hwaddr offset,unsigned size)88 static uint64_t pxa2xx_pcmcia_io_read(void *opaque,
89 hwaddr offset, unsigned size)
90 {
91 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
92 PCMCIACardClass *pcc;
93
94 if (s->slot.attached) {
95 pcc = PCMCIA_CARD_GET_CLASS(s->card);
96 return pcc->io_read(s->card, offset);
97 }
98
99 return 0;
100 }
101
pxa2xx_pcmcia_io_write(void * opaque,hwaddr offset,uint64_t value,unsigned size)102 static void pxa2xx_pcmcia_io_write(void *opaque, hwaddr offset,
103 uint64_t value, unsigned size)
104 {
105 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
106 PCMCIACardClass *pcc;
107
108 if (s->slot.attached) {
109 pcc = PCMCIA_CARD_GET_CLASS(s->card);
110 pcc->io_write(s->card, offset, value);
111 }
112 }
113
114 static const MemoryRegionOps pxa2xx_pcmcia_common_ops = {
115 .read = pxa2xx_pcmcia_common_read,
116 .write = pxa2xx_pcmcia_common_write,
117 .endianness = DEVICE_NATIVE_ENDIAN
118 };
119
120 static const MemoryRegionOps pxa2xx_pcmcia_attr_ops = {
121 .read = pxa2xx_pcmcia_attr_read,
122 .write = pxa2xx_pcmcia_attr_write,
123 .endianness = DEVICE_NATIVE_ENDIAN
124 };
125
126 static const MemoryRegionOps pxa2xx_pcmcia_io_ops = {
127 .read = pxa2xx_pcmcia_io_read,
128 .write = pxa2xx_pcmcia_io_write,
129 .endianness = DEVICE_NATIVE_ENDIAN
130 };
131
pxa2xx_pcmcia_set_irq(void * opaque,int line,int level)132 static void pxa2xx_pcmcia_set_irq(void *opaque, int line, int level)
133 {
134 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
135 if (!s->irq)
136 return;
137
138 qemu_set_irq(s->irq, level);
139 }
140
pxa2xx_pcmcia_initfn(Object * obj)141 static void pxa2xx_pcmcia_initfn(Object *obj)
142 {
143 SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
144 PXA2xxPCMCIAState *s = PXA2XX_PCMCIA(obj);
145
146 memory_region_init(&s->container_mem, obj, "container", 0x10000000);
147 sysbus_init_mmio(sbd, &s->container_mem);
148
149 /* Socket I/O Memory Space */
150 memory_region_init_io(&s->iomem, obj, &pxa2xx_pcmcia_io_ops, s,
151 "pxa2xx-pcmcia-io", 0x04000000);
152 memory_region_add_subregion(&s->container_mem, 0x00000000,
153 &s->iomem);
154
155 /* Then next 64 MB is reserved */
156
157 /* Socket Attribute Memory Space */
158 memory_region_init_io(&s->attr_iomem, obj, &pxa2xx_pcmcia_attr_ops, s,
159 "pxa2xx-pcmcia-attribute", 0x04000000);
160 memory_region_add_subregion(&s->container_mem, 0x08000000,
161 &s->attr_iomem);
162
163 /* Socket Common Memory Space */
164 memory_region_init_io(&s->common_iomem, obj, &pxa2xx_pcmcia_common_ops, s,
165 "pxa2xx-pcmcia-common", 0x04000000);
166 memory_region_add_subregion(&s->container_mem, 0x0c000000,
167 &s->common_iomem);
168
169 s->slot.irq = qemu_allocate_irq(pxa2xx_pcmcia_set_irq, s, 0);
170
171 object_property_add_link(obj, "card", TYPE_PCMCIA_CARD,
172 (Object **)&s->card,
173 NULL, /* read-only property */
174 0);
175 }
176
177 /* Insert a new card into a slot */
pxa2xx_pcmcia_attach(void * opaque,PCMCIACardState * card)178 int pxa2xx_pcmcia_attach(void *opaque, PCMCIACardState *card)
179 {
180 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
181 PCMCIACardClass *pcc;
182
183 if (s->slot.attached) {
184 return -EEXIST;
185 }
186
187 if (s->cd_irq) {
188 qemu_irq_raise(s->cd_irq);
189 }
190
191 s->card = card;
192 pcc = PCMCIA_CARD_GET_CLASS(s->card);
193
194 s->slot.attached = true;
195 s->card->slot = &s->slot;
196 pcc->attach(s->card);
197
198 return 0;
199 }
200
201 /* Eject card from the slot */
pxa2xx_pcmcia_detach(void * opaque)202 int pxa2xx_pcmcia_detach(void *opaque)
203 {
204 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
205 PCMCIACardClass *pcc;
206
207 if (!s->slot.attached) {
208 return -ENOENT;
209 }
210
211 pcc = PCMCIA_CARD_GET_CLASS(s->card);
212 pcc->detach(s->card);
213 s->card->slot = NULL;
214 s->card = NULL;
215
216 s->slot.attached = false;
217
218 if (s->irq) {
219 qemu_irq_lower(s->irq);
220 }
221 if (s->cd_irq) {
222 qemu_irq_lower(s->cd_irq);
223 }
224
225 return 0;
226 }
227
228 /* Who to notify on card events */
pxa2xx_pcmcia_set_irq_cb(void * opaque,qemu_irq irq,qemu_irq cd_irq)229 void pxa2xx_pcmcia_set_irq_cb(void *opaque, qemu_irq irq, qemu_irq cd_irq)
230 {
231 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque;
232 s->irq = irq;
233 s->cd_irq = cd_irq;
234 }
235
236 static const TypeInfo pxa2xx_pcmcia_type_info = {
237 .name = TYPE_PXA2XX_PCMCIA,
238 .parent = TYPE_SYS_BUS_DEVICE,
239 .instance_size = sizeof(PXA2xxPCMCIAState),
240 .instance_init = pxa2xx_pcmcia_initfn,
241 };
242
pxa2xx_pcmcia_register_types(void)243 static void pxa2xx_pcmcia_register_types(void)
244 {
245 type_register_static(&pxa2xx_pcmcia_type_info);
246 }
247
248 type_init(pxa2xx_pcmcia_register_types)
249