diff options
| -rw-r--r-- | hw/spapr.c | 3 | ||||
| -rw-r--r-- | hw/spapr_vio.c | 238 | ||||
| -rw-r--r-- | hw/spapr_vio.h | 32 |
3 files changed, 272 insertions, 1 deletions
diff --git a/hw/spapr.c b/hw/spapr.c index 859cf86011..f8749cc57d 100644 --- a/hw/spapr.c +++ b/hw/spapr.c @@ -65,7 +65,8 @@ static void *spapr_create_fdt(int *fdt_size, ram_addr_t ramsize, uint32_t start_prop = cpu_to_be32(initrd_base); uint32_t end_prop = cpu_to_be32(initrd_base + initrd_size); uint32_t pft_size_prop[] = {0, cpu_to_be32(hash_shift)}; - char hypertas_prop[] = "hcall-pft\0hcall-term\0hcall-dabr\0hcall-interrupt"; + char hypertas_prop[] = "hcall-pft\0hcall-term\0hcall-dabr\0hcall-interrupt" + "\0hcall-tce"; uint32_t interrupt_server_ranges_prop[] = {0, cpu_to_be32(smp_cpus)}; int i; char *modelname; diff --git a/hw/spapr_vio.c b/hw/spapr_vio.c index 605079cda5..39d77ee28b 100644 --- a/hw/spapr_vio.c +++ b/hw/spapr_vio.c @@ -37,6 +37,7 @@ #endif /* CONFIG_FDT */ /* #define DEBUG_SPAPR */ +/* #define DEBUG_TCE */ #ifdef DEBUG_SPAPR #define dprintf(fmt, ...) \ @@ -115,6 +116,28 @@ static int vio_make_devnode(VIOsPAPRDevice *dev, } } + if (dev->rtce_window_size) { + uint32_t dma_prop[] = {cpu_to_be32(dev->reg), + 0, 0, + 0, cpu_to_be32(dev->rtce_window_size)}; + + ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-address-cells", 2); + if (ret < 0) { + return ret; + } + + ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-size-cells", 2); + if (ret < 0) { + return ret; + } + + ret = fdt_setprop(fdt, node_off, "ibm,my-dma-window", dma_prop, + sizeof(dma_prop)); + if (ret < 0) { + return ret; + } + } + if (info->devnode) { ret = (info->devnode)(dev, fdt, node_off); if (ret < 0) { @@ -126,6 +149,216 @@ static int vio_make_devnode(VIOsPAPRDevice *dev, } #endif /* CONFIG_FDT */ +/* + * RTCE handling + */ + +static void rtce_init(VIOsPAPRDevice *dev) +{ + size_t size = (dev->rtce_window_size >> SPAPR_VIO_TCE_PAGE_SHIFT) + * sizeof(VIOsPAPR_RTCE); + + if (size) { + dev->rtce_table = qemu_mallocz(size); + } +} + +static target_ulong h_put_tce(CPUState *env, sPAPREnvironment *spapr, + target_ulong opcode, target_ulong *args) +{ + target_ulong liobn = args[0]; + target_ulong ioba = args[1]; + target_ulong tce = args[2]; + VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, liobn); + VIOsPAPR_RTCE *rtce; + + if (!dev) { + hcall_dprintf("spapr_vio_put_tce on non-existent LIOBN " + TARGET_FMT_lx "\n", liobn); + return H_PARAMETER; + } + + ioba &= ~(SPAPR_VIO_TCE_PAGE_SIZE - 1); + +#ifdef DEBUG_TCE + fprintf(stderr, "spapr_vio_put_tce on %s ioba 0x" TARGET_FMT_lx + " TCE 0x" TARGET_FMT_lx "\n", dev->qdev.id, ioba, tce); +#endif + + if (ioba >= dev->rtce_window_size) { + hcall_dprintf("spapr_vio_put_tce on out-of-boards IOBA 0x" + TARGET_FMT_lx "\n", ioba); + return H_PARAMETER; + } + + rtce = dev->rtce_table + (ioba >> SPAPR_VIO_TCE_PAGE_SHIFT); + rtce->tce = tce; + + return H_SUCCESS; +} + +int spapr_vio_check_tces(VIOsPAPRDevice *dev, target_ulong ioba, + target_ulong len, enum VIOsPAPR_TCEAccess access) +{ + int start, end, i; + + start = ioba >> SPAPR_VIO_TCE_PAGE_SHIFT; + end = (ioba + len - 1) >> SPAPR_VIO_TCE_PAGE_SHIFT; + + for (i = start; i <= end; i++) { + if ((dev->rtce_table[i].tce & access) != access) { +#ifdef DEBUG_TCE + fprintf(stderr, "FAIL on %d\n", i); +#endif + return -1; + } + } + + return 0; +} + +int spapr_tce_dma_write(VIOsPAPRDevice *dev, uint64_t taddr, const void *buf, + uint32_t size) +{ +#ifdef DEBUG_TCE + fprintf(stderr, "spapr_tce_dma_write taddr=0x%llx size=0x%x\n", + (unsigned long long)taddr, size); +#endif + + while (size) { + uint64_t tce; + uint32_t lsize; + uint64_t txaddr; + + /* Check if we are in bound */ + if (taddr >= dev->rtce_window_size) { +#ifdef DEBUG_TCE + fprintf(stderr, "spapr_tce_dma_write out of bounds\n"); +#endif + return H_DEST_PARM; + } + tce = dev->rtce_table[taddr >> SPAPR_VIO_TCE_PAGE_SHIFT].tce; + + /* How much til end of page ? */ + lsize = MIN(size, ((~taddr) & SPAPR_VIO_TCE_PAGE_MASK) + 1); + + /* Check TCE */ + if (!(tce & 2)) { + return H_DEST_PARM; + } + + /* Translate */ + txaddr = (tce & ~SPAPR_VIO_TCE_PAGE_MASK) | + (taddr & SPAPR_VIO_TCE_PAGE_MASK); + +#ifdef DEBUG_TCE + fprintf(stderr, " -> write to txaddr=0x%llx, size=0x%x\n", + (unsigned long long)txaddr, lsize); +#endif + + /* Do it */ + cpu_physical_memory_write(txaddr, buf, lsize); + buf += lsize; + taddr += lsize; + size -= lsize; + } + return 0; +} + +int spapr_tce_dma_zero(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t size) +{ + /* FIXME: allocating a temp buffer is nasty, but just stepping + * through writing zeroes is awkward. This will do for now. */ + uint8_t zeroes[size]; + +#ifdef DEBUG_TCE + fprintf(stderr, "spapr_tce_dma_zero taddr=0x%llx size=0x%x\n", + (unsigned long long)taddr, size); +#endif + + memset(zeroes, 0, size); + return spapr_tce_dma_write(dev, taddr, zeroes, size); +} + +void stb_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint8_t val) +{ + spapr_tce_dma_write(dev, taddr, &val, sizeof(val)); +} + +void sth_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint16_t val) +{ + val = tswap16(val); + spapr_tce_dma_write(dev, taddr, &val, sizeof(val)); +} + + +void stw_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t val) +{ + val = tswap32(val); + spapr_tce_dma_write(dev, taddr, &val, sizeof(val)); +} + +void stq_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint64_t val) +{ + val = tswap64(val); + spapr_tce_dma_write(dev, taddr, &val, sizeof(val)); +} + +int spapr_tce_dma_read(VIOsPAPRDevice *dev, uint64_t taddr, void *buf, + uint32_t size) +{ +#ifdef DEBUG_TCE + fprintf(stderr, "spapr_tce_dma_write taddr=0x%llx size=0x%x\n", + (unsigned long long)taddr, size); +#endif + + while (size) { + uint64_t tce; + uint32_t lsize; + uint64_t txaddr; + + /* Check if we are in bound */ + if (taddr >= dev->rtce_window_size) { +#ifdef DEBUG_TCE + fprintf(stderr, "spapr_tce_dma_read out of bounds\n"); +#endif + return H_DEST_PARM; + } + tce = dev->rtce_table[taddr >> SPAPR_VIO_TCE_PAGE_SHIFT].tce; + + /* How much til end of page ? */ + lsize = MIN(size, ((~taddr) & SPAPR_VIO_TCE_PAGE_MASK) + 1); + + /* Check TCE */ + if (!(tce & 1)) { + return H_DEST_PARM; + } + + /* Translate */ + txaddr = (tce & ~SPAPR_VIO_TCE_PAGE_MASK) | + (taddr & SPAPR_VIO_TCE_PAGE_MASK); + +#ifdef DEBUG_TCE + fprintf(stderr, " -> write to txaddr=0x%llx, size=0x%x\n", + (unsigned long long)txaddr, lsize); +#endif + /* Do it */ + cpu_physical_memory_read(txaddr, buf, lsize); + buf += lsize; + taddr += lsize; + size -= lsize; + } + return H_SUCCESS; +} + +uint64_t ldq_tce(VIOsPAPRDevice *dev, uint64_t taddr) +{ + uint64_t val; + + spapr_tce_dma_read(dev, taddr, &val, sizeof(val)); + return tswap64(val); +} + static int spapr_vio_busdev_init(DeviceState *qdev, DeviceInfo *qinfo) { VIOsPAPRDeviceInfo *info = (VIOsPAPRDeviceInfo *)qinfo; @@ -138,6 +371,8 @@ static int spapr_vio_busdev_init(DeviceState *qdev, DeviceInfo *qinfo) dev->qdev.id = id; + rtce_init(dev); + return info->init(dev); } @@ -193,6 +428,9 @@ VIOsPAPRBus *spapr_vio_bus_init(void) /* hcall-vio */ spapr_register_hypercall(H_VIO_SIGNAL, h_vio_signal); + /* hcall-tce */ + spapr_register_hypercall(H_PUT_TCE, h_put_tce); + for (qinfo = device_info_list; qinfo; qinfo = qinfo->next) { VIOsPAPRDeviceInfo *info = (VIOsPAPRDeviceInfo *)qinfo; diff --git a/hw/spapr_vio.h b/hw/spapr_vio.h index 20139273d3..9d864c20fe 100644 --- a/hw/spapr_vio.h +++ b/hw/spapr_vio.h @@ -21,12 +21,29 @@ * License along with this library; if not, see <http://www.gnu.org/licenses/>. */ +#define SPAPR_VIO_TCE_PAGE_SHIFT 12 +#define SPAPR_VIO_TCE_PAGE_SIZE (1ULL << SPAPR_VIO_TCE_PAGE_SHIFT) +#define SPAPR_VIO_TCE_PAGE_MASK (SPAPR_VIO_TCE_PAGE_SIZE - 1) + +enum VIOsPAPR_TCEAccess { + SPAPR_TCE_FAULT = 0, + SPAPR_TCE_RO = 1, + SPAPR_TCE_WO = 2, + SPAPR_TCE_RW = 3, +}; + +typedef struct VIOsPAPR_RTCE { + uint64_t tce; +} VIOsPAPR_RTCE; + typedef struct VIOsPAPRDevice { DeviceState qdev; uint32_t reg; qemu_irq qirq; uint32_t vio_irq_num; target_ulong signal_state; + uint32_t rtce_window_size; + VIOsPAPR_RTCE *rtce_table; } VIOsPAPRDevice; typedef struct VIOsPAPRBus { @@ -49,6 +66,21 @@ extern int spapr_populate_vdevice(VIOsPAPRBus *bus, void *fdt); extern int spapr_vio_signal(VIOsPAPRDevice *dev, target_ulong mode); +int spapr_vio_check_tces(VIOsPAPRDevice *dev, target_ulong ioba, + target_ulong len, + enum VIOsPAPR_TCEAccess access); + +int spapr_tce_dma_read(VIOsPAPRDevice *dev, uint64_t taddr, + void *buf, uint32_t size); +int spapr_tce_dma_write(VIOsPAPRDevice *dev, uint64_t taddr, + const void *buf, uint32_t size); +int spapr_tce_dma_zero(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t size); +void stb_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint8_t val); +void sth_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint16_t val); +void stw_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t val); +void stq_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint64_t val); +uint64_t ldq_tce(VIOsPAPRDevice *dev, uint64_t taddr); + void vty_putchars(VIOsPAPRDevice *sdev, uint8_t *buf, int len); void spapr_vty_create(VIOsPAPRBus *bus, uint32_t reg, CharDriverState *chardev, |