Revision ee86dfee hw/spapr_vio.c
| b/hw/spapr_vio.c | ||
|---|---|---|
| 37 | 37 |
#endif /* CONFIG_FDT */ |
| 38 | 38 |
|
| 39 | 39 |
/* #define DEBUG_SPAPR */ |
| 40 |
/* #define DEBUG_TCE */ |
|
| 40 | 41 |
|
| 41 | 42 |
#ifdef DEBUG_SPAPR |
| 42 | 43 |
#define dprintf(fmt, ...) \ |
| ... | ... | |
| 115 | 116 |
} |
| 116 | 117 |
} |
| 117 | 118 |
|
| 119 |
if (dev->rtce_window_size) {
|
|
| 120 |
uint32_t dma_prop[] = {cpu_to_be32(dev->reg),
|
|
| 121 |
0, 0, |
|
| 122 |
0, cpu_to_be32(dev->rtce_window_size)}; |
|
| 123 |
|
|
| 124 |
ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-address-cells", 2); |
|
| 125 |
if (ret < 0) {
|
|
| 126 |
return ret; |
|
| 127 |
} |
|
| 128 |
|
|
| 129 |
ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-size-cells", 2); |
|
| 130 |
if (ret < 0) {
|
|
| 131 |
return ret; |
|
| 132 |
} |
|
| 133 |
|
|
| 134 |
ret = fdt_setprop(fdt, node_off, "ibm,my-dma-window", dma_prop, |
|
| 135 |
sizeof(dma_prop)); |
|
| 136 |
if (ret < 0) {
|
|
| 137 |
return ret; |
|
| 138 |
} |
|
| 139 |
} |
|
| 140 |
|
|
| 118 | 141 |
if (info->devnode) {
|
| 119 | 142 |
ret = (info->devnode)(dev, fdt, node_off); |
| 120 | 143 |
if (ret < 0) {
|
| ... | ... | |
| 126 | 149 |
} |
| 127 | 150 |
#endif /* CONFIG_FDT */ |
| 128 | 151 |
|
| 152 |
/* |
|
| 153 |
* RTCE handling |
|
| 154 |
*/ |
|
| 155 |
|
|
| 156 |
static void rtce_init(VIOsPAPRDevice *dev) |
|
| 157 |
{
|
|
| 158 |
size_t size = (dev->rtce_window_size >> SPAPR_VIO_TCE_PAGE_SHIFT) |
|
| 159 |
* sizeof(VIOsPAPR_RTCE); |
|
| 160 |
|
|
| 161 |
if (size) {
|
|
| 162 |
dev->rtce_table = qemu_mallocz(size); |
|
| 163 |
} |
|
| 164 |
} |
|
| 165 |
|
|
| 166 |
static target_ulong h_put_tce(CPUState *env, sPAPREnvironment *spapr, |
|
| 167 |
target_ulong opcode, target_ulong *args) |
|
| 168 |
{
|
|
| 169 |
target_ulong liobn = args[0]; |
|
| 170 |
target_ulong ioba = args[1]; |
|
| 171 |
target_ulong tce = args[2]; |
|
| 172 |
VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, liobn); |
|
| 173 |
VIOsPAPR_RTCE *rtce; |
|
| 174 |
|
|
| 175 |
if (!dev) {
|
|
| 176 |
hcall_dprintf("spapr_vio_put_tce on non-existent LIOBN "
|
|
| 177 |
TARGET_FMT_lx "\n", liobn); |
|
| 178 |
return H_PARAMETER; |
|
| 179 |
} |
|
| 180 |
|
|
| 181 |
ioba &= ~(SPAPR_VIO_TCE_PAGE_SIZE - 1); |
|
| 182 |
|
|
| 183 |
#ifdef DEBUG_TCE |
|
| 184 |
fprintf(stderr, "spapr_vio_put_tce on %s ioba 0x" TARGET_FMT_lx |
|
| 185 |
" TCE 0x" TARGET_FMT_lx "\n", dev->qdev.id, ioba, tce); |
|
| 186 |
#endif |
|
| 187 |
|
|
| 188 |
if (ioba >= dev->rtce_window_size) {
|
|
| 189 |
hcall_dprintf("spapr_vio_put_tce on out-of-boards IOBA 0x"
|
|
| 190 |
TARGET_FMT_lx "\n", ioba); |
|
| 191 |
return H_PARAMETER; |
|
| 192 |
} |
|
| 193 |
|
|
| 194 |
rtce = dev->rtce_table + (ioba >> SPAPR_VIO_TCE_PAGE_SHIFT); |
|
| 195 |
rtce->tce = tce; |
|
| 196 |
|
|
| 197 |
return H_SUCCESS; |
|
| 198 |
} |
|
| 199 |
|
|
| 200 |
int spapr_vio_check_tces(VIOsPAPRDevice *dev, target_ulong ioba, |
|
| 201 |
target_ulong len, enum VIOsPAPR_TCEAccess access) |
|
| 202 |
{
|
|
| 203 |
int start, end, i; |
|
| 204 |
|
|
| 205 |
start = ioba >> SPAPR_VIO_TCE_PAGE_SHIFT; |
|
| 206 |
end = (ioba + len - 1) >> SPAPR_VIO_TCE_PAGE_SHIFT; |
|
| 207 |
|
|
| 208 |
for (i = start; i <= end; i++) {
|
|
| 209 |
if ((dev->rtce_table[i].tce & access) != access) {
|
|
| 210 |
#ifdef DEBUG_TCE |
|
| 211 |
fprintf(stderr, "FAIL on %d\n", i); |
|
| 212 |
#endif |
|
| 213 |
return -1; |
|
| 214 |
} |
|
| 215 |
} |
|
| 216 |
|
|
| 217 |
return 0; |
|
| 218 |
} |
|
| 219 |
|
|
| 220 |
int spapr_tce_dma_write(VIOsPAPRDevice *dev, uint64_t taddr, const void *buf, |
|
| 221 |
uint32_t size) |
|
| 222 |
{
|
|
| 223 |
#ifdef DEBUG_TCE |
|
| 224 |
fprintf(stderr, "spapr_tce_dma_write taddr=0x%llx size=0x%x\n", |
|
| 225 |
(unsigned long long)taddr, size); |
|
| 226 |
#endif |
|
| 227 |
|
|
| 228 |
while (size) {
|
|
| 229 |
uint64_t tce; |
|
| 230 |
uint32_t lsize; |
|
| 231 |
uint64_t txaddr; |
|
| 232 |
|
|
| 233 |
/* Check if we are in bound */ |
|
| 234 |
if (taddr >= dev->rtce_window_size) {
|
|
| 235 |
#ifdef DEBUG_TCE |
|
| 236 |
fprintf(stderr, "spapr_tce_dma_write out of bounds\n"); |
|
| 237 |
#endif |
|
| 238 |
return H_DEST_PARM; |
|
| 239 |
} |
|
| 240 |
tce = dev->rtce_table[taddr >> SPAPR_VIO_TCE_PAGE_SHIFT].tce; |
|
| 241 |
|
|
| 242 |
/* How much til end of page ? */ |
|
| 243 |
lsize = MIN(size, ((~taddr) & SPAPR_VIO_TCE_PAGE_MASK) + 1); |
|
| 244 |
|
|
| 245 |
/* Check TCE */ |
|
| 246 |
if (!(tce & 2)) {
|
|
| 247 |
return H_DEST_PARM; |
|
| 248 |
} |
|
| 249 |
|
|
| 250 |
/* Translate */ |
|
| 251 |
txaddr = (tce & ~SPAPR_VIO_TCE_PAGE_MASK) | |
|
| 252 |
(taddr & SPAPR_VIO_TCE_PAGE_MASK); |
|
| 253 |
|
|
| 254 |
#ifdef DEBUG_TCE |
|
| 255 |
fprintf(stderr, " -> write to txaddr=0x%llx, size=0x%x\n", |
|
| 256 |
(unsigned long long)txaddr, lsize); |
|
| 257 |
#endif |
|
| 258 |
|
|
| 259 |
/* Do it */ |
|
| 260 |
cpu_physical_memory_write(txaddr, buf, lsize); |
|
| 261 |
buf += lsize; |
|
| 262 |
taddr += lsize; |
|
| 263 |
size -= lsize; |
|
| 264 |
} |
|
| 265 |
return 0; |
|
| 266 |
} |
|
| 267 |
|
|
| 268 |
int spapr_tce_dma_zero(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t size) |
|
| 269 |
{
|
|
| 270 |
/* FIXME: allocating a temp buffer is nasty, but just stepping |
|
| 271 |
* through writing zeroes is awkward. This will do for now. */ |
|
| 272 |
uint8_t zeroes[size]; |
|
| 273 |
|
|
| 274 |
#ifdef DEBUG_TCE |
|
| 275 |
fprintf(stderr, "spapr_tce_dma_zero taddr=0x%llx size=0x%x\n", |
|
| 276 |
(unsigned long long)taddr, size); |
|
| 277 |
#endif |
|
| 278 |
|
|
| 279 |
memset(zeroes, 0, size); |
|
| 280 |
return spapr_tce_dma_write(dev, taddr, zeroes, size); |
|
| 281 |
} |
|
| 282 |
|
|
| 283 |
void stb_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint8_t val) |
|
| 284 |
{
|
|
| 285 |
spapr_tce_dma_write(dev, taddr, &val, sizeof(val)); |
|
| 286 |
} |
|
| 287 |
|
|
| 288 |
void sth_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint16_t val) |
|
| 289 |
{
|
|
| 290 |
val = tswap16(val); |
|
| 291 |
spapr_tce_dma_write(dev, taddr, &val, sizeof(val)); |
|
| 292 |
} |
|
| 293 |
|
|
| 294 |
|
|
| 295 |
void stw_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t val) |
|
| 296 |
{
|
|
| 297 |
val = tswap32(val); |
|
| 298 |
spapr_tce_dma_write(dev, taddr, &val, sizeof(val)); |
|
| 299 |
} |
|
| 300 |
|
|
| 301 |
void stq_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint64_t val) |
|
| 302 |
{
|
|
| 303 |
val = tswap64(val); |
|
| 304 |
spapr_tce_dma_write(dev, taddr, &val, sizeof(val)); |
|
| 305 |
} |
|
| 306 |
|
|
| 307 |
int spapr_tce_dma_read(VIOsPAPRDevice *dev, uint64_t taddr, void *buf, |
|
| 308 |
uint32_t size) |
|
| 309 |
{
|
|
| 310 |
#ifdef DEBUG_TCE |
|
| 311 |
fprintf(stderr, "spapr_tce_dma_write taddr=0x%llx size=0x%x\n", |
|
| 312 |
(unsigned long long)taddr, size); |
|
| 313 |
#endif |
|
| 314 |
|
|
| 315 |
while (size) {
|
|
| 316 |
uint64_t tce; |
|
| 317 |
uint32_t lsize; |
|
| 318 |
uint64_t txaddr; |
|
| 319 |
|
|
| 320 |
/* Check if we are in bound */ |
|
| 321 |
if (taddr >= dev->rtce_window_size) {
|
|
| 322 |
#ifdef DEBUG_TCE |
|
| 323 |
fprintf(stderr, "spapr_tce_dma_read out of bounds\n"); |
|
| 324 |
#endif |
|
| 325 |
return H_DEST_PARM; |
|
| 326 |
} |
|
| 327 |
tce = dev->rtce_table[taddr >> SPAPR_VIO_TCE_PAGE_SHIFT].tce; |
|
| 328 |
|
|
| 329 |
/* How much til end of page ? */ |
|
| 330 |
lsize = MIN(size, ((~taddr) & SPAPR_VIO_TCE_PAGE_MASK) + 1); |
|
| 331 |
|
|
| 332 |
/* Check TCE */ |
|
| 333 |
if (!(tce & 1)) {
|
|
| 334 |
return H_DEST_PARM; |
|
| 335 |
} |
|
| 336 |
|
|
| 337 |
/* Translate */ |
|
| 338 |
txaddr = (tce & ~SPAPR_VIO_TCE_PAGE_MASK) | |
|
| 339 |
(taddr & SPAPR_VIO_TCE_PAGE_MASK); |
|
| 340 |
|
|
| 341 |
#ifdef DEBUG_TCE |
|
| 342 |
fprintf(stderr, " -> write to txaddr=0x%llx, size=0x%x\n", |
|
| 343 |
(unsigned long long)txaddr, lsize); |
|
| 344 |
#endif |
|
| 345 |
/* Do it */ |
|
| 346 |
cpu_physical_memory_read(txaddr, buf, lsize); |
|
| 347 |
buf += lsize; |
|
| 348 |
taddr += lsize; |
|
| 349 |
size -= lsize; |
|
| 350 |
} |
|
| 351 |
return H_SUCCESS; |
|
| 352 |
} |
|
| 353 |
|
|
| 354 |
uint64_t ldq_tce(VIOsPAPRDevice *dev, uint64_t taddr) |
|
| 355 |
{
|
|
| 356 |
uint64_t val; |
|
| 357 |
|
|
| 358 |
spapr_tce_dma_read(dev, taddr, &val, sizeof(val)); |
|
| 359 |
return tswap64(val); |
|
| 360 |
} |
|
| 361 |
|
|
| 129 | 362 |
static int spapr_vio_busdev_init(DeviceState *qdev, DeviceInfo *qinfo) |
| 130 | 363 |
{
|
| 131 | 364 |
VIOsPAPRDeviceInfo *info = (VIOsPAPRDeviceInfo *)qinfo; |
| ... | ... | |
| 138 | 371 |
|
| 139 | 372 |
dev->qdev.id = id; |
| 140 | 373 |
|
| 374 |
rtce_init(dev); |
|
| 375 |
|
|
| 141 | 376 |
return info->init(dev); |
| 142 | 377 |
} |
| 143 | 378 |
|
| ... | ... | |
| 193 | 428 |
/* hcall-vio */ |
| 194 | 429 |
spapr_register_hypercall(H_VIO_SIGNAL, h_vio_signal); |
| 195 | 430 |
|
| 431 |
/* hcall-tce */ |
|
| 432 |
spapr_register_hypercall(H_PUT_TCE, h_put_tce); |
|
| 433 |
|
|
| 196 | 434 |
for (qinfo = device_info_list; qinfo; qinfo = qinfo->next) {
|
| 197 | 435 |
VIOsPAPRDeviceInfo *info = (VIOsPAPRDeviceInfo *)qinfo; |
| 198 | 436 |
|
Also available in: Unified diff