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 #define TYPE_PXA2XX_PCMCIA "pxa2xx-pcmcia" 22 #define PXA2XX_PCMCIA(obj) \ 23 OBJECT_CHECK(PXA2xxPCMCIAState, obj, TYPE_PXA2XX_PCMCIA) 24 25 struct PXA2xxPCMCIAState { 26 SysBusDevice parent_obj; 27 28 PCMCIASocket slot; 29 MemoryRegion container_mem; 30 MemoryRegion common_iomem; 31 MemoryRegion attr_iomem; 32 MemoryRegion iomem; 33 34 qemu_irq irq; 35 qemu_irq cd_irq; 36 37 PCMCIACardState *card; 38 }; 39 40 static uint64_t pxa2xx_pcmcia_common_read(void *opaque, 41 hwaddr offset, unsigned size) 42 { 43 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 44 PCMCIACardClass *pcc; 45 46 if (s->slot.attached) { 47 pcc = PCMCIA_CARD_GET_CLASS(s->card); 48 return pcc->common_read(s->card, offset); 49 } 50 51 return 0; 52 } 53 54 static void pxa2xx_pcmcia_common_write(void *opaque, hwaddr offset, 55 uint64_t value, unsigned size) 56 { 57 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 58 PCMCIACardClass *pcc; 59 60 if (s->slot.attached) { 61 pcc = PCMCIA_CARD_GET_CLASS(s->card); 62 pcc->common_write(s->card, offset, value); 63 } 64 } 65 66 static uint64_t pxa2xx_pcmcia_attr_read(void *opaque, 67 hwaddr offset, unsigned size) 68 { 69 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 70 PCMCIACardClass *pcc; 71 72 if (s->slot.attached) { 73 pcc = PCMCIA_CARD_GET_CLASS(s->card); 74 return pcc->attr_read(s->card, offset); 75 } 76 77 return 0; 78 } 79 80 static void pxa2xx_pcmcia_attr_write(void *opaque, hwaddr offset, 81 uint64_t value, unsigned size) 82 { 83 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 84 PCMCIACardClass *pcc; 85 86 if (s->slot.attached) { 87 pcc = PCMCIA_CARD_GET_CLASS(s->card); 88 pcc->attr_write(s->card, offset, value); 89 } 90 } 91 92 static uint64_t pxa2xx_pcmcia_io_read(void *opaque, 93 hwaddr offset, unsigned size) 94 { 95 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 96 PCMCIACardClass *pcc; 97 98 if (s->slot.attached) { 99 pcc = PCMCIA_CARD_GET_CLASS(s->card); 100 return pcc->io_read(s->card, offset); 101 } 102 103 return 0; 104 } 105 106 static void pxa2xx_pcmcia_io_write(void *opaque, hwaddr offset, 107 uint64_t value, unsigned size) 108 { 109 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 110 PCMCIACardClass *pcc; 111 112 if (s->slot.attached) { 113 pcc = PCMCIA_CARD_GET_CLASS(s->card); 114 pcc->io_write(s->card, offset, value); 115 } 116 } 117 118 static const MemoryRegionOps pxa2xx_pcmcia_common_ops = { 119 .read = pxa2xx_pcmcia_common_read, 120 .write = pxa2xx_pcmcia_common_write, 121 .endianness = DEVICE_NATIVE_ENDIAN 122 }; 123 124 static const MemoryRegionOps pxa2xx_pcmcia_attr_ops = { 125 .read = pxa2xx_pcmcia_attr_read, 126 .write = pxa2xx_pcmcia_attr_write, 127 .endianness = DEVICE_NATIVE_ENDIAN 128 }; 129 130 static const MemoryRegionOps pxa2xx_pcmcia_io_ops = { 131 .read = pxa2xx_pcmcia_io_read, 132 .write = pxa2xx_pcmcia_io_write, 133 .endianness = DEVICE_NATIVE_ENDIAN 134 }; 135 136 static void pxa2xx_pcmcia_set_irq(void *opaque, int line, int level) 137 { 138 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 139 if (!s->irq) 140 return; 141 142 qemu_set_irq(s->irq, level); 143 } 144 145 PXA2xxPCMCIAState *pxa2xx_pcmcia_init(MemoryRegion *sysmem, 146 hwaddr base) 147 { 148 DeviceState *dev; 149 PXA2xxPCMCIAState *s; 150 151 dev = qdev_new(TYPE_PXA2XX_PCMCIA); 152 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base); 153 s = PXA2XX_PCMCIA(dev); 154 155 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); 156 157 return s; 158 } 159 160 static void pxa2xx_pcmcia_initfn(Object *obj) 161 { 162 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 163 PXA2xxPCMCIAState *s = PXA2XX_PCMCIA(obj); 164 165 memory_region_init(&s->container_mem, obj, "container", 0x10000000); 166 sysbus_init_mmio(sbd, &s->container_mem); 167 168 /* Socket I/O Memory Space */ 169 memory_region_init_io(&s->iomem, obj, &pxa2xx_pcmcia_io_ops, s, 170 "pxa2xx-pcmcia-io", 0x04000000); 171 memory_region_add_subregion(&s->container_mem, 0x00000000, 172 &s->iomem); 173 174 /* Then next 64 MB is reserved */ 175 176 /* Socket Attribute Memory Space */ 177 memory_region_init_io(&s->attr_iomem, obj, &pxa2xx_pcmcia_attr_ops, s, 178 "pxa2xx-pcmcia-attribute", 0x04000000); 179 memory_region_add_subregion(&s->container_mem, 0x08000000, 180 &s->attr_iomem); 181 182 /* Socket Common Memory Space */ 183 memory_region_init_io(&s->common_iomem, obj, &pxa2xx_pcmcia_common_ops, s, 184 "pxa2xx-pcmcia-common", 0x04000000); 185 memory_region_add_subregion(&s->container_mem, 0x0c000000, 186 &s->common_iomem); 187 188 s->slot.irq = qemu_allocate_irq(pxa2xx_pcmcia_set_irq, s, 0); 189 190 object_property_add_link(obj, "card", TYPE_PCMCIA_CARD, 191 (Object **)&s->card, 192 NULL, /* read-only property */ 193 0); 194 } 195 196 /* Insert a new card into a slot */ 197 int pxa2xx_pcmcia_attach(void *opaque, PCMCIACardState *card) 198 { 199 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 200 PCMCIACardClass *pcc; 201 202 if (s->slot.attached) { 203 return -EEXIST; 204 } 205 206 if (s->cd_irq) { 207 qemu_irq_raise(s->cd_irq); 208 } 209 210 s->card = card; 211 pcc = PCMCIA_CARD_GET_CLASS(s->card); 212 213 s->slot.attached = true; 214 s->card->slot = &s->slot; 215 pcc->attach(s->card); 216 217 return 0; 218 } 219 220 /* Eject card from the slot */ 221 int pxa2xx_pcmcia_detach(void *opaque) 222 { 223 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 224 PCMCIACardClass *pcc; 225 226 if (!s->slot.attached) { 227 return -ENOENT; 228 } 229 230 pcc = PCMCIA_CARD_GET_CLASS(s->card); 231 pcc->detach(s->card); 232 s->card->slot = NULL; 233 s->card = NULL; 234 235 s->slot.attached = false; 236 237 if (s->irq) { 238 qemu_irq_lower(s->irq); 239 } 240 if (s->cd_irq) { 241 qemu_irq_lower(s->cd_irq); 242 } 243 244 return 0; 245 } 246 247 /* Who to notify on card events */ 248 void pxa2xx_pcmcia_set_irq_cb(void *opaque, qemu_irq irq, qemu_irq cd_irq) 249 { 250 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 251 s->irq = irq; 252 s->cd_irq = cd_irq; 253 } 254 255 static const TypeInfo pxa2xx_pcmcia_type_info = { 256 .name = TYPE_PXA2XX_PCMCIA, 257 .parent = TYPE_SYS_BUS_DEVICE, 258 .instance_size = sizeof(PXA2xxPCMCIAState), 259 .instance_init = pxa2xx_pcmcia_initfn, 260 }; 261 262 static void pxa2xx_pcmcia_register_types(void) 263 { 264 type_register_static(&pxa2xx_pcmcia_type_info); 265 } 266 267 type_init(pxa2xx_pcmcia_register_types) 268