| /* |
| * QEMU sPAPR VIO code |
| * |
| * Copyright (c) 2010 David Gibson, IBM Corporation <dwg@au1.ibm.com> |
| * Based on the s390 virtio bus code: |
| * Copyright (c) 2009 Alexander Graf <agraf@suse.de> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "hw.h" |
| #include "sysemu.h" |
| #include "boards.h" |
| #include "monitor.h" |
| #include "loader.h" |
| #include "elf.h" |
| #include "hw/sysbus.h" |
| #include "kvm.h" |
| #include "device_tree.h" |
| #include "kvm_ppc.h" |
| |
| #include "hw/spapr.h" |
| #include "hw/spapr_vio.h" |
| #include "hw/xics.h" |
| |
| #ifdef CONFIG_FDT |
| #include <libfdt.h> |
| #endif /* CONFIG_FDT */ |
| |
| /* #define DEBUG_SPAPR */ |
| /* #define DEBUG_TCE */ |
| |
| #ifdef DEBUG_SPAPR |
| #define dprintf(fmt, ...) \ |
| do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
| #else |
| #define dprintf(fmt, ...) \ |
| do { } while (0) |
| #endif |
| |
| static struct BusInfo spapr_vio_bus_info = { |
| .name = "spapr-vio", |
| .size = sizeof(VIOsPAPRBus), |
| .props = (Property[]) { |
| DEFINE_PROP_UINT32("irq", VIOsPAPRDevice, vio_irq_num, 0), \ |
| DEFINE_PROP_END_OF_LIST(), |
| }, |
| }; |
| |
| VIOsPAPRDevice *spapr_vio_find_by_reg(VIOsPAPRBus *bus, uint32_t reg) |
| { |
| DeviceState *qdev; |
| VIOsPAPRDevice *dev = NULL; |
| |
| QTAILQ_FOREACH(qdev, &bus->bus.children, sibling) { |
| dev = (VIOsPAPRDevice *)qdev; |
| if (dev->reg == reg) { |
| return dev; |
| } |
| } |
| |
| return NULL; |
| } |
| |
| static char *vio_format_dev_name(VIOsPAPRDevice *dev) |
| { |
| VIOsPAPRDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev); |
| char *name; |
| |
| /* Device tree style name device@reg */ |
| if (asprintf(&name, "%s@%x", pc->dt_name, dev->reg) < 0) { |
| return NULL; |
| } |
| |
| return name; |
| } |
| |
| #ifdef CONFIG_FDT |
| static int vio_make_devnode(VIOsPAPRDevice *dev, |
| void *fdt) |
| { |
| VIOsPAPRDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev); |
| int vdevice_off, node_off, ret; |
| char *dt_name; |
| |
| vdevice_off = fdt_path_offset(fdt, "/vdevice"); |
| if (vdevice_off < 0) { |
| return vdevice_off; |
| } |
| |
| dt_name = vio_format_dev_name(dev); |
| if (!dt_name) { |
| return -ENOMEM; |
| } |
| |
| node_off = fdt_add_subnode(fdt, vdevice_off, dt_name); |
| free(dt_name); |
| if (node_off < 0) { |
| return node_off; |
| } |
| |
| ret = fdt_setprop_cell(fdt, node_off, "reg", dev->reg); |
| if (ret < 0) { |
| return ret; |
| } |
| |
| if (pc->dt_type) { |
| ret = fdt_setprop_string(fdt, node_off, "device_type", |
| pc->dt_type); |
| if (ret < 0) { |
| return ret; |
| } |
| } |
| |
| if (pc->dt_compatible) { |
| ret = fdt_setprop_string(fdt, node_off, "compatible", |
| pc->dt_compatible); |
| if (ret < 0) { |
| return ret; |
| } |
| } |
| |
| if (dev->qirq) { |
| uint32_t ints_prop[] = {cpu_to_be32(dev->vio_irq_num), 0}; |
| |
| ret = fdt_setprop(fdt, node_off, "interrupts", ints_prop, |
| sizeof(ints_prop)); |
| if (ret < 0) { |
| return ret; |
| } |
| } |
| |
| 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 (pc->devnode) { |
| ret = (pc->devnode)(dev, fdt, node_off); |
| if (ret < 0) { |
| return ret; |
| } |
| } |
| |
| return node_off; |
| } |
| #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 = kvmppc_create_spapr_tce(dev->reg, |
| dev->rtce_window_size, |
| &dev->kvmtce_fd); |
| |
| if (!dev->rtce_table) { |
| dev->rtce_table = g_malloc0(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 |
| |
| /* Check for bypass */ |
| if (dev->flags & VIO_PAPR_FLAG_DMA_BYPASS) { |
| cpu_physical_memory_write(taddr, buf, size); |
| return 0; |
| } |
| |
| 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 |
| |
| /* Check for bypass */ |
| if (dev->flags & VIO_PAPR_FLAG_DMA_BYPASS) { |
| cpu_physical_memory_read(taddr, buf, size); |
| return 0; |
| } |
| |
| 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); |
| } |
| |
| /* |
| * CRQ handling |
| */ |
| static target_ulong h_reg_crq(CPUState *env, sPAPREnvironment *spapr, |
| target_ulong opcode, target_ulong *args) |
| { |
| target_ulong reg = args[0]; |
| target_ulong queue_addr = args[1]; |
| target_ulong queue_len = args[2]; |
| VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
| |
| if (!dev) { |
| hcall_dprintf("h_reg_crq on non-existent unit 0x" |
| TARGET_FMT_lx "\n", reg); |
| return H_PARAMETER; |
| } |
| |
| /* We can't grok a queue size bigger than 256M for now */ |
| if (queue_len < 0x1000 || queue_len > 0x10000000) { |
| hcall_dprintf("h_reg_crq, queue size too small or too big (0x%llx)\n", |
| (unsigned long long)queue_len); |
| return H_PARAMETER; |
| } |
| |
| /* Check queue alignment */ |
| if (queue_addr & 0xfff) { |
| hcall_dprintf("h_reg_crq, queue not aligned (0x%llx)\n", |
| (unsigned long long)queue_addr); |
| return H_PARAMETER; |
| } |
| |
| /* Check if device supports CRQs */ |
| if (!dev->crq.SendFunc) { |
| return H_NOT_FOUND; |
| } |
| |
| |
| /* Already a queue ? */ |
| if (dev->crq.qsize) { |
| return H_RESOURCE; |
| } |
| dev->crq.qladdr = queue_addr; |
| dev->crq.qsize = queue_len; |
| dev->crq.qnext = 0; |
| |
| dprintf("CRQ for dev 0x" TARGET_FMT_lx " registered at 0x" |
| TARGET_FMT_lx "/0x" TARGET_FMT_lx "\n", |
| reg, queue_addr, queue_len); |
| return H_SUCCESS; |
| } |
| |
| static target_ulong h_free_crq(CPUState *env, sPAPREnvironment *spapr, |
| target_ulong opcode, target_ulong *args) |
| { |
| target_ulong reg = args[0]; |
| VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
| |
| if (!dev) { |
| hcall_dprintf("h_free_crq on non-existent unit 0x" |
| TARGET_FMT_lx "\n", reg); |
| return H_PARAMETER; |
| } |
| |
| dev->crq.qladdr = 0; |
| dev->crq.qsize = 0; |
| dev->crq.qnext = 0; |
| |
| dprintf("CRQ for dev 0x" TARGET_FMT_lx " freed\n", reg); |
| |
| return H_SUCCESS; |
| } |
| |
| static target_ulong h_send_crq(CPUState *env, sPAPREnvironment *spapr, |
| target_ulong opcode, target_ulong *args) |
| { |
| target_ulong reg = args[0]; |
| target_ulong msg_hi = args[1]; |
| target_ulong msg_lo = args[2]; |
| VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
| uint64_t crq_mangle[2]; |
| |
| if (!dev) { |
| hcall_dprintf("h_send_crq on non-existent unit 0x" |
| TARGET_FMT_lx "\n", reg); |
| return H_PARAMETER; |
| } |
| crq_mangle[0] = cpu_to_be64(msg_hi); |
| crq_mangle[1] = cpu_to_be64(msg_lo); |
| |
| if (dev->crq.SendFunc) { |
| return dev->crq.SendFunc(dev, (uint8_t *)crq_mangle); |
| } |
| |
| return H_HARDWARE; |
| } |
| |
| static target_ulong h_enable_crq(CPUState *env, sPAPREnvironment *spapr, |
| target_ulong opcode, target_ulong *args) |
| { |
| target_ulong reg = args[0]; |
| VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
| |
| if (!dev) { |
| hcall_dprintf("h_enable_crq on non-existent unit 0x" |
| TARGET_FMT_lx "\n", reg); |
| return H_PARAMETER; |
| } |
| |
| return 0; |
| } |
| |
| /* Returns negative error, 0 success, or positive: queue full */ |
| int spapr_vio_send_crq(VIOsPAPRDevice *dev, uint8_t *crq) |
| { |
| int rc; |
| uint8_t byte; |
| |
| if (!dev->crq.qsize) { |
| fprintf(stderr, "spapr_vio_send_creq on uninitialized queue\n"); |
| return -1; |
| } |
| |
| /* Maybe do a fast path for KVM just writing to the pages */ |
| rc = spapr_tce_dma_read(dev, dev->crq.qladdr + dev->crq.qnext, &byte, 1); |
| if (rc) { |
| return rc; |
| } |
| if (byte != 0) { |
| return 1; |
| } |
| |
| rc = spapr_tce_dma_write(dev, dev->crq.qladdr + dev->crq.qnext + 8, |
| &crq[8], 8); |
| if (rc) { |
| return rc; |
| } |
| |
| kvmppc_eieio(); |
| |
| rc = spapr_tce_dma_write(dev, dev->crq.qladdr + dev->crq.qnext, crq, 8); |
| if (rc) { |
| return rc; |
| } |
| |
| dev->crq.qnext = (dev->crq.qnext + 16) % dev->crq.qsize; |
| |
| if (dev->signal_state & 1) { |
| qemu_irq_pulse(dev->qirq); |
| } |
| |
| return 0; |
| } |
| |
| /* "quiesce" handling */ |
| |
| static void spapr_vio_quiesce_one(VIOsPAPRDevice *dev) |
| { |
| dev->flags &= ~VIO_PAPR_FLAG_DMA_BYPASS; |
| |
| if (dev->rtce_table) { |
| size_t size = (dev->rtce_window_size >> SPAPR_VIO_TCE_PAGE_SHIFT) |
| * sizeof(VIOsPAPR_RTCE); |
| memset(dev->rtce_table, 0, size); |
| } |
| |
| dev->crq.qladdr = 0; |
| dev->crq.qsize = 0; |
| dev->crq.qnext = 0; |
| } |
| |
| static void rtas_set_tce_bypass(sPAPREnvironment *spapr, uint32_t token, |
| uint32_t nargs, target_ulong args, |
| uint32_t nret, target_ulong rets) |
| { |
| VIOsPAPRBus *bus = spapr->vio_bus; |
| VIOsPAPRDevice *dev; |
| uint32_t unit, enable; |
| |
| if (nargs != 2) { |
| rtas_st(rets, 0, -3); |
| return; |
| } |
| unit = rtas_ld(args, 0); |
| enable = rtas_ld(args, 1); |
| dev = spapr_vio_find_by_reg(bus, unit); |
| if (!dev) { |
| rtas_st(rets, 0, -3); |
| return; |
| } |
| if (enable) { |
| dev->flags |= VIO_PAPR_FLAG_DMA_BYPASS; |
| } else { |
| dev->flags &= ~VIO_PAPR_FLAG_DMA_BYPASS; |
| } |
| |
| rtas_st(rets, 0, 0); |
| } |
| |
| static void rtas_quiesce(sPAPREnvironment *spapr, uint32_t token, |
| uint32_t nargs, target_ulong args, |
| uint32_t nret, target_ulong rets) |
| { |
| VIOsPAPRBus *bus = spapr->vio_bus; |
| DeviceState *qdev; |
| VIOsPAPRDevice *dev = NULL; |
| |
| if (nargs != 0) { |
| rtas_st(rets, 0, -3); |
| return; |
| } |
| |
| QTAILQ_FOREACH(qdev, &bus->bus.children, sibling) { |
| dev = (VIOsPAPRDevice *)qdev; |
| spapr_vio_quiesce_one(dev); |
| } |
| |
| rtas_st(rets, 0, 0); |
| } |
| |
| static int spapr_vio_check_reg(VIOsPAPRDevice *sdev) |
| { |
| VIOsPAPRDevice *other_sdev; |
| DeviceState *qdev; |
| VIOsPAPRBus *sbus; |
| |
| sbus = DO_UPCAST(VIOsPAPRBus, bus, sdev->qdev.parent_bus); |
| |
| /* |
| * Check two device aren't given clashing addresses by the user (or some |
| * other mechanism). We have to open code this because we have to check |
| * for matches with devices other than us. |
| */ |
| QTAILQ_FOREACH(qdev, &sbus->bus.children, sibling) { |
| other_sdev = DO_UPCAST(VIOsPAPRDevice, qdev, qdev); |
| |
| if (other_sdev != sdev && other_sdev->reg == sdev->reg) { |
| fprintf(stderr, "vio: %s and %s devices conflict at address %#x\n", |
| object_get_typename(OBJECT(sdev)), |
| object_get_typename(OBJECT(qdev)), |
| sdev->reg); |
| return -EEXIST; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int spapr_vio_busdev_init(DeviceState *qdev) |
| { |
| VIOsPAPRDevice *dev = (VIOsPAPRDevice *)qdev; |
| VIOsPAPRDeviceClass *pc = VIO_SPAPR_DEVICE_GET_CLASS(dev); |
| char *id; |
| int ret; |
| |
| ret = spapr_vio_check_reg(dev); |
| if (ret) { |
| return ret; |
| } |
| |
| /* Don't overwrite ids assigned on the command line */ |
| if (!dev->qdev.id) { |
| id = vio_format_dev_name(dev); |
| if (!id) { |
| return -1; |
| } |
| dev->qdev.id = id; |
| } |
| |
| dev->qirq = spapr_allocate_irq(dev->vio_irq_num, &dev->vio_irq_num); |
| if (!dev->qirq) { |
| return -1; |
| } |
| |
| rtce_init(dev); |
| |
| return pc->init(dev); |
| } |
| |
| static target_ulong h_vio_signal(CPUState *env, sPAPREnvironment *spapr, |
| target_ulong opcode, |
| target_ulong *args) |
| { |
| target_ulong reg = args[0]; |
| target_ulong mode = args[1]; |
| VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
| VIOsPAPRDeviceClass *pc; |
| |
| if (!dev) { |
| return H_PARAMETER; |
| } |
| |
| pc = VIO_SPAPR_DEVICE_GET_CLASS(dev); |
| |
| if (mode & ~pc->signal_mask) { |
| return H_PARAMETER; |
| } |
| |
| dev->signal_state = mode; |
| |
| return H_SUCCESS; |
| } |
| |
| VIOsPAPRBus *spapr_vio_bus_init(void) |
| { |
| VIOsPAPRBus *bus; |
| BusState *qbus; |
| DeviceState *dev; |
| |
| /* Create bridge device */ |
| dev = qdev_create(NULL, "spapr-vio-bridge"); |
| qdev_init_nofail(dev); |
| |
| /* Create bus on bridge device */ |
| |
| qbus = qbus_create(&spapr_vio_bus_info, dev, "spapr-vio"); |
| bus = DO_UPCAST(VIOsPAPRBus, bus, qbus); |
| |
| /* hcall-vio */ |
| spapr_register_hypercall(H_VIO_SIGNAL, h_vio_signal); |
| |
| /* hcall-tce */ |
| spapr_register_hypercall(H_PUT_TCE, h_put_tce); |
| |
| /* hcall-crq */ |
| spapr_register_hypercall(H_REG_CRQ, h_reg_crq); |
| spapr_register_hypercall(H_FREE_CRQ, h_free_crq); |
| spapr_register_hypercall(H_SEND_CRQ, h_send_crq); |
| spapr_register_hypercall(H_ENABLE_CRQ, h_enable_crq); |
| |
| /* RTAS calls */ |
| spapr_rtas_register("ibm,set-tce-bypass", rtas_set_tce_bypass); |
| spapr_rtas_register("quiesce", rtas_quiesce); |
| |
| return bus; |
| } |
| |
| /* Represents sPAPR hcall VIO devices */ |
| |
| static int spapr_vio_bridge_init(SysBusDevice *dev) |
| { |
| /* nothing */ |
| return 0; |
| } |
| |
| static void spapr_vio_bridge_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); |
| |
| k->init = spapr_vio_bridge_init; |
| dc->no_user = 1; |
| } |
| |
| static TypeInfo spapr_vio_bridge_info = { |
| .name = "spapr-vio-bridge", |
| .parent = TYPE_SYS_BUS_DEVICE, |
| .instance_size = sizeof(SysBusDevice), |
| .class_init = spapr_vio_bridge_class_init, |
| }; |
| |
| static void vio_spapr_device_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *k = DEVICE_CLASS(klass); |
| k->init = spapr_vio_busdev_init; |
| k->bus_info = &spapr_vio_bus_info; |
| } |
| |
| static TypeInfo spapr_vio_type_info = { |
| .name = TYPE_VIO_SPAPR_DEVICE, |
| .parent = TYPE_DEVICE, |
| .instance_size = sizeof(VIOsPAPRDevice), |
| .abstract = true, |
| .class_size = sizeof(VIOsPAPRDeviceClass), |
| .class_init = vio_spapr_device_class_init, |
| }; |
| |
| static void spapr_vio_register_devices(void) |
| { |
| type_register_static(&spapr_vio_bridge_info); |
| type_register_static(&spapr_vio_type_info); |
| } |
| |
| device_init(spapr_vio_register_devices) |
| |
| #ifdef CONFIG_FDT |
| static int compare_reg(const void *p1, const void *p2) |
| { |
| VIOsPAPRDevice const *dev1, *dev2; |
| |
| dev1 = (VIOsPAPRDevice *)*(DeviceState **)p1; |
| dev2 = (VIOsPAPRDevice *)*(DeviceState **)p2; |
| |
| if (dev1->reg < dev2->reg) { |
| return -1; |
| } |
| if (dev1->reg == dev2->reg) { |
| return 0; |
| } |
| |
| /* dev1->reg > dev2->reg */ |
| return 1; |
| } |
| |
| int spapr_populate_vdevice(VIOsPAPRBus *bus, void *fdt) |
| { |
| DeviceState *qdev, **qdevs; |
| int i, num, ret = 0; |
| |
| /* Count qdevs on the bus list */ |
| num = 0; |
| QTAILQ_FOREACH(qdev, &bus->bus.children, sibling) { |
| num++; |
| } |
| |
| /* Copy out into an array of pointers */ |
| qdevs = g_malloc(sizeof(qdev) * num); |
| num = 0; |
| QTAILQ_FOREACH(qdev, &bus->bus.children, sibling) { |
| qdevs[num++] = qdev; |
| } |
| |
| /* Sort the array */ |
| qsort(qdevs, num, sizeof(qdev), compare_reg); |
| |
| /* Hack alert. Give the devices to libfdt in reverse order, we happen |
| * to know that will mean they are in forward order in the tree. */ |
| for (i = num - 1; i >= 0; i--) { |
| VIOsPAPRDevice *dev = (VIOsPAPRDevice *)(qdevs[i]); |
| |
| ret = vio_make_devnode(dev, fdt); |
| |
| if (ret < 0) { |
| goto out; |
| } |
| } |
| |
| ret = 0; |
| out: |
| free(qdevs); |
| |
| return ret; |
| } |
| |
| int spapr_populate_chosen_stdout(void *fdt, VIOsPAPRBus *bus) |
| { |
| VIOsPAPRDevice *dev; |
| char *name, *path; |
| int ret, offset; |
| |
| dev = spapr_vty_get_default(bus); |
| if (!dev) |
| return 0; |
| |
| offset = fdt_path_offset(fdt, "/chosen"); |
| if (offset < 0) { |
| return offset; |
| } |
| |
| name = vio_format_dev_name(dev); |
| if (!name) { |
| return -ENOMEM; |
| } |
| |
| if (asprintf(&path, "/vdevice/%s", name) < 0) { |
| path = NULL; |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| ret = fdt_setprop_string(fdt, offset, "linux,stdout-path", path); |
| out: |
| free(name); |
| free(path); |
| |
| return ret; |
| } |
| #endif /* CONFIG_FDT */ |
