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 "qemu/module.h" 17 #include "hw/pcmcia.h" 18 #include "hw/arm/pxa.h" 19 20 #define TYPE_PXA2XX_PCMCIA "pxa2xx-pcmcia" 21 #define PXA2XX_PCMCIA(obj) \ 22 OBJECT_CHECK(PXA2xxPCMCIAState, obj, TYPE_PXA2XX_PCMCIA) 23 24 struct PXA2xxPCMCIAState { 25 SysBusDevice parent_obj; 26 27 PCMCIASocket slot; 28 MemoryRegion container_mem; 29 MemoryRegion common_iomem; 30 MemoryRegion attr_iomem; 31 MemoryRegion iomem; 32 33 qemu_irq irq; 34 qemu_irq cd_irq; 35 36 PCMCIACardState *card; 37 }; 38 39 static uint64_t pxa2xx_pcmcia_common_read(void *opaque, 40 hwaddr offset, unsigned size) 41 { 42 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 43 PCMCIACardClass *pcc; 44 45 if (s->slot.attached) { 46 pcc = PCMCIA_CARD_GET_CLASS(s->card); 47 return pcc->common_read(s->card, offset); 48 } 49 50 return 0; 51 } 52 53 static void pxa2xx_pcmcia_common_write(void *opaque, hwaddr offset, 54 uint64_t value, unsigned size) 55 { 56 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 57 PCMCIACardClass *pcc; 58 59 if (s->slot.attached) { 60 pcc = PCMCIA_CARD_GET_CLASS(s->card); 61 pcc->common_write(s->card, offset, value); 62 } 63 } 64 65 static uint64_t pxa2xx_pcmcia_attr_read(void *opaque, 66 hwaddr offset, unsigned size) 67 { 68 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 69 PCMCIACardClass *pcc; 70 71 if (s->slot.attached) { 72 pcc = PCMCIA_CARD_GET_CLASS(s->card); 73 return pcc->attr_read(s->card, offset); 74 } 75 76 return 0; 77 } 78 79 static void pxa2xx_pcmcia_attr_write(void *opaque, hwaddr offset, 80 uint64_t value, unsigned size) 81 { 82 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 83 PCMCIACardClass *pcc; 84 85 if (s->slot.attached) { 86 pcc = PCMCIA_CARD_GET_CLASS(s->card); 87 pcc->attr_write(s->card, offset, value); 88 } 89 } 90 91 static uint64_t pxa2xx_pcmcia_io_read(void *opaque, 92 hwaddr offset, unsigned size) 93 { 94 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 95 PCMCIACardClass *pcc; 96 97 if (s->slot.attached) { 98 pcc = PCMCIA_CARD_GET_CLASS(s->card); 99 return pcc->io_read(s->card, offset); 100 } 101 102 return 0; 103 } 104 105 static void pxa2xx_pcmcia_io_write(void *opaque, hwaddr offset, 106 uint64_t value, unsigned size) 107 { 108 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 109 PCMCIACardClass *pcc; 110 111 if (s->slot.attached) { 112 pcc = PCMCIA_CARD_GET_CLASS(s->card); 113 pcc->io_write(s->card, offset, value); 114 } 115 } 116 117 static const MemoryRegionOps pxa2xx_pcmcia_common_ops = { 118 .read = pxa2xx_pcmcia_common_read, 119 .write = pxa2xx_pcmcia_common_write, 120 .endianness = DEVICE_NATIVE_ENDIAN 121 }; 122 123 static const MemoryRegionOps pxa2xx_pcmcia_attr_ops = { 124 .read = pxa2xx_pcmcia_attr_read, 125 .write = pxa2xx_pcmcia_attr_write, 126 .endianness = DEVICE_NATIVE_ENDIAN 127 }; 128 129 static const MemoryRegionOps pxa2xx_pcmcia_io_ops = { 130 .read = pxa2xx_pcmcia_io_read, 131 .write = pxa2xx_pcmcia_io_write, 132 .endianness = DEVICE_NATIVE_ENDIAN 133 }; 134 135 static void pxa2xx_pcmcia_set_irq(void *opaque, int line, int level) 136 { 137 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 138 if (!s->irq) 139 return; 140 141 qemu_set_irq(s->irq, level); 142 } 143 144 PXA2xxPCMCIAState *pxa2xx_pcmcia_init(MemoryRegion *sysmem, 145 hwaddr base) 146 { 147 DeviceState *dev; 148 PXA2xxPCMCIAState *s; 149 150 dev = qdev_create(NULL, TYPE_PXA2XX_PCMCIA); 151 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base); 152 s = PXA2XX_PCMCIA(dev); 153 154 qdev_init_nofail(dev); 155 156 return s; 157 } 158 159 static void pxa2xx_pcmcia_initfn(Object *obj) 160 { 161 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 162 PXA2xxPCMCIAState *s = PXA2XX_PCMCIA(obj); 163 164 memory_region_init(&s->container_mem, obj, "container", 0x10000000); 165 sysbus_init_mmio(sbd, &s->container_mem); 166 167 /* Socket I/O Memory Space */ 168 memory_region_init_io(&s->iomem, obj, &pxa2xx_pcmcia_io_ops, s, 169 "pxa2xx-pcmcia-io", 0x04000000); 170 memory_region_add_subregion(&s->container_mem, 0x00000000, 171 &s->iomem); 172 173 /* Then next 64 MB is reserved */ 174 175 /* Socket Attribute Memory Space */ 176 memory_region_init_io(&s->attr_iomem, obj, &pxa2xx_pcmcia_attr_ops, s, 177 "pxa2xx-pcmcia-attribute", 0x04000000); 178 memory_region_add_subregion(&s->container_mem, 0x08000000, 179 &s->attr_iomem); 180 181 /* Socket Common Memory Space */ 182 memory_region_init_io(&s->common_iomem, obj, &pxa2xx_pcmcia_common_ops, s, 183 "pxa2xx-pcmcia-common", 0x04000000); 184 memory_region_add_subregion(&s->container_mem, 0x0c000000, 185 &s->common_iomem); 186 187 s->slot.irq = qemu_allocate_irq(pxa2xx_pcmcia_set_irq, s, 0); 188 189 object_property_add_link(obj, "card", TYPE_PCMCIA_CARD, 190 (Object **)&s->card, 191 NULL, /* read-only property */ 192 0); 193 } 194 195 /* Insert a new card into a slot */ 196 int pxa2xx_pcmcia_attach(void *opaque, PCMCIACardState *card) 197 { 198 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 199 PCMCIACardClass *pcc; 200 201 if (s->slot.attached) { 202 return -EEXIST; 203 } 204 205 if (s->cd_irq) { 206 qemu_irq_raise(s->cd_irq); 207 } 208 209 s->card = card; 210 pcc = PCMCIA_CARD_GET_CLASS(s->card); 211 212 s->slot.attached = true; 213 s->card->slot = &s->slot; 214 pcc->attach(s->card); 215 216 return 0; 217 } 218 219 /* Eject card from the slot */ 220 int pxa2xx_pcmcia_detach(void *opaque) 221 { 222 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 223 PCMCIACardClass *pcc; 224 225 if (!s->slot.attached) { 226 return -ENOENT; 227 } 228 229 pcc = PCMCIA_CARD_GET_CLASS(s->card); 230 pcc->detach(s->card); 231 s->card->slot = NULL; 232 s->card = NULL; 233 234 s->slot.attached = false; 235 236 if (s->irq) { 237 qemu_irq_lower(s->irq); 238 } 239 if (s->cd_irq) { 240 qemu_irq_lower(s->cd_irq); 241 } 242 243 return 0; 244 } 245 246 /* Who to notify on card events */ 247 void pxa2xx_pcmcia_set_irq_cb(void *opaque, qemu_irq irq, qemu_irq cd_irq) 248 { 249 PXA2xxPCMCIAState *s = (PXA2xxPCMCIAState *) opaque; 250 s->irq = irq; 251 s->cd_irq = cd_irq; 252 } 253 254 static const TypeInfo pxa2xx_pcmcia_type_info = { 255 .name = TYPE_PXA2XX_PCMCIA, 256 .parent = TYPE_SYS_BUS_DEVICE, 257 .instance_size = sizeof(PXA2xxPCMCIAState), 258 .instance_init = pxa2xx_pcmcia_initfn, 259 }; 260 261 static void pxa2xx_pcmcia_register_types(void) 262 { 263 type_register_static(&pxa2xx_pcmcia_type_info); 264 } 265 266 type_init(pxa2xx_pcmcia_register_types) 267