root / hw / spapr_vio.c @ f2c88dc1
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/*
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* QEMU sPAPR VIO code
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*
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* Copyright (c) 2010 David Gibson, IBM Corporation <dwg@au1.ibm.com>
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* Based on the s390 virtio bus code:
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* Copyright (c) 2009 Alexander Graf <agraf@suse.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "hw.h" |
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#include "sysemu.h" |
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#include "boards.h" |
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#include "monitor.h" |
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#include "loader.h" |
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#include "elf.h" |
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#include "hw/sysbus.h" |
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#include "kvm.h" |
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#include "device_tree.h" |
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#include "kvm_ppc.h" |
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#include "hw/spapr.h" |
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#include "hw/spapr_vio.h" |
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#ifdef CONFIG_FDT
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#include <libfdt.h> |
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#endif /* CONFIG_FDT */ |
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|
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/* #define DEBUG_SPAPR */
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/* #define DEBUG_TCE */
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#ifdef DEBUG_SPAPR
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#define dprintf(fmt, ...) \
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do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) |
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#else
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#define dprintf(fmt, ...) \
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do { } while (0) |
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#endif
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static struct BusInfo spapr_vio_bus_info = { |
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.name = "spapr-vio",
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.size = sizeof(VIOsPAPRBus),
|
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}; |
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|
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VIOsPAPRDevice *spapr_vio_find_by_reg(VIOsPAPRBus *bus, uint32_t reg) |
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{
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DeviceState *qdev; |
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VIOsPAPRDevice *dev = NULL;
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QLIST_FOREACH(qdev, &bus->bus.children, sibling) {
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dev = (VIOsPAPRDevice *)qdev; |
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if (dev->reg == reg) {
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break;
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} |
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} |
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return dev;
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} |
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|
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#ifdef CONFIG_FDT
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static int vio_make_devnode(VIOsPAPRDevice *dev, |
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void *fdt)
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{
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VIOsPAPRDeviceInfo *info = (VIOsPAPRDeviceInfo *)dev->qdev.info; |
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int vdevice_off, node_off;
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int ret;
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vdevice_off = fdt_path_offset(fdt, "/vdevice");
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if (vdevice_off < 0) { |
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return vdevice_off;
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} |
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node_off = fdt_add_subnode(fdt, vdevice_off, dev->qdev.id); |
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if (node_off < 0) { |
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return node_off;
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} |
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ret = fdt_setprop_cell(fdt, node_off, "reg", dev->reg);
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if (ret < 0) { |
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return ret;
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} |
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if (info->dt_type) {
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ret = fdt_setprop_string(fdt, node_off, "device_type",
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info->dt_type); |
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if (ret < 0) { |
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return ret;
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} |
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} |
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|
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if (info->dt_compatible) {
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ret = fdt_setprop_string(fdt, node_off, "compatible",
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info->dt_compatible); |
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if (ret < 0) { |
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return ret;
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} |
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} |
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if (dev->qirq) {
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uint32_t ints_prop[] = {cpu_to_be32(dev->vio_irq_num), 0};
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ret = fdt_setprop(fdt, node_off, "interrupts", ints_prop,
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sizeof(ints_prop));
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if (ret < 0) { |
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return ret;
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} |
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} |
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if (dev->rtce_window_size) {
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uint32_t dma_prop[] = {cpu_to_be32(dev->reg),
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0, 0, |
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0, cpu_to_be32(dev->rtce_window_size)};
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ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-address-cells", 2); |
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if (ret < 0) { |
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return ret;
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} |
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ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-size-cells", 2); |
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if (ret < 0) { |
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return ret;
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} |
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ret = fdt_setprop(fdt, node_off, "ibm,my-dma-window", dma_prop,
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sizeof(dma_prop));
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if (ret < 0) { |
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return ret;
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} |
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} |
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if (info->devnode) {
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ret = (info->devnode)(dev, fdt, node_off); |
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if (ret < 0) { |
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return ret;
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} |
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} |
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return node_off;
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} |
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#endif /* CONFIG_FDT */ |
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/*
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* RTCE handling
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*/
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static void rtce_init(VIOsPAPRDevice *dev) |
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{
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size_t size = (dev->rtce_window_size >> SPAPR_VIO_TCE_PAGE_SHIFT) |
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* sizeof(VIOsPAPR_RTCE);
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if (size) {
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dev->rtce_table = qemu_mallocz(size); |
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} |
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} |
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static target_ulong h_put_tce(CPUState *env, sPAPREnvironment *spapr,
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target_ulong opcode, target_ulong *args) |
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{
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target_ulong liobn = args[0];
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target_ulong ioba = args[1];
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target_ulong tce = args[2];
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VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, liobn); |
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VIOsPAPR_RTCE *rtce; |
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if (!dev) {
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hcall_dprintf("spapr_vio_put_tce on non-existent LIOBN "
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TARGET_FMT_lx "\n", liobn);
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return H_PARAMETER;
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} |
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ioba &= ~(SPAPR_VIO_TCE_PAGE_SIZE - 1);
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#ifdef DEBUG_TCE
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fprintf(stderr, "spapr_vio_put_tce on %s ioba 0x" TARGET_FMT_lx
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" TCE 0x" TARGET_FMT_lx "\n", dev->qdev.id, ioba, tce); |
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#endif
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if (ioba >= dev->rtce_window_size) {
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hcall_dprintf("spapr_vio_put_tce on out-of-boards IOBA 0x"
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TARGET_FMT_lx "\n", ioba);
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return H_PARAMETER;
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} |
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rtce = dev->rtce_table + (ioba >> SPAPR_VIO_TCE_PAGE_SHIFT); |
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rtce->tce = tce; |
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return H_SUCCESS;
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} |
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int spapr_vio_check_tces(VIOsPAPRDevice *dev, target_ulong ioba,
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target_ulong len, enum VIOsPAPR_TCEAccess access)
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{
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int start, end, i;
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start = ioba >> SPAPR_VIO_TCE_PAGE_SHIFT; |
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end = (ioba + len - 1) >> SPAPR_VIO_TCE_PAGE_SHIFT;
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for (i = start; i <= end; i++) {
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if ((dev->rtce_table[i].tce & access) != access) {
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#ifdef DEBUG_TCE
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fprintf(stderr, "FAIL on %d\n", i);
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#endif
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return -1; |
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} |
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} |
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return 0; |
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} |
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int spapr_tce_dma_write(VIOsPAPRDevice *dev, uint64_t taddr, const void *buf, |
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uint32_t size) |
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{
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#ifdef DEBUG_TCE
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fprintf(stderr, "spapr_tce_dma_write taddr=0x%llx size=0x%x\n",
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(unsigned long long)taddr, size); |
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#endif
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/* Check for bypass */
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if (dev->flags & VIO_PAPR_FLAG_DMA_BYPASS) {
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cpu_physical_memory_write(taddr, buf, size); |
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return 0; |
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} |
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|
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while (size) {
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uint64_t tce; |
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uint32_t lsize; |
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uint64_t txaddr; |
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|
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/* Check if we are in bound */
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if (taddr >= dev->rtce_window_size) {
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#ifdef DEBUG_TCE
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fprintf(stderr, "spapr_tce_dma_write out of bounds\n");
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#endif
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return H_DEST_PARM;
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} |
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tce = dev->rtce_table[taddr >> SPAPR_VIO_TCE_PAGE_SHIFT].tce; |
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|
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/* How much til end of page ? */
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lsize = MIN(size, ((~taddr) & SPAPR_VIO_TCE_PAGE_MASK) + 1);
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|
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/* Check TCE */
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if (!(tce & 2)) { |
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return H_DEST_PARM;
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} |
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|
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/* Translate */
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txaddr = (tce & ~SPAPR_VIO_TCE_PAGE_MASK) | |
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(taddr & SPAPR_VIO_TCE_PAGE_MASK); |
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|
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#ifdef DEBUG_TCE
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fprintf(stderr, " -> write to txaddr=0x%llx, size=0x%x\n",
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(unsigned long long)txaddr, lsize); |
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#endif
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|
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/* Do it */
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cpu_physical_memory_write(txaddr, buf, lsize); |
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buf += lsize; |
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taddr += lsize; |
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size -= lsize; |
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} |
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return 0; |
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} |
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|
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int spapr_tce_dma_zero(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t size)
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{
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/* FIXME: allocating a temp buffer is nasty, but just stepping
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* through writing zeroes is awkward. This will do for now. */
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uint8_t zeroes[size]; |
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|
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#ifdef DEBUG_TCE
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fprintf(stderr, "spapr_tce_dma_zero taddr=0x%llx size=0x%x\n",
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(unsigned long long)taddr, size); |
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#endif
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|
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memset(zeroes, 0, size);
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return spapr_tce_dma_write(dev, taddr, zeroes, size);
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} |
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|
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void stb_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint8_t val)
|
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{
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spapr_tce_dma_write(dev, taddr, &val, sizeof(val));
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} |
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|
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void sth_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint16_t val)
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{
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val = tswap16(val); |
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spapr_tce_dma_write(dev, taddr, &val, sizeof(val));
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} |
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|
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|
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void stw_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t val)
|
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{
|
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val = tswap32(val); |
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spapr_tce_dma_write(dev, taddr, &val, sizeof(val));
|
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} |
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|
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void stq_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint64_t val)
|
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{
|
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val = tswap64(val); |
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spapr_tce_dma_write(dev, taddr, &val, sizeof(val));
|
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} |
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|
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int spapr_tce_dma_read(VIOsPAPRDevice *dev, uint64_t taddr, void *buf, |
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uint32_t size) |
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{
|
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#ifdef DEBUG_TCE
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fprintf(stderr, "spapr_tce_dma_write taddr=0x%llx size=0x%x\n",
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(unsigned long long)taddr, size); |
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#endif
|
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|
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/* Check for bypass */
|
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if (dev->flags & VIO_PAPR_FLAG_DMA_BYPASS) {
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cpu_physical_memory_read(taddr, buf, size); |
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return 0; |
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} |
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|
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while (size) {
|
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uint64_t tce; |
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uint32_t lsize; |
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uint64_t txaddr; |
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|
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/* Check if we are in bound */
|
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if (taddr >= dev->rtce_window_size) {
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#ifdef DEBUG_TCE
|
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fprintf(stderr, "spapr_tce_dma_read out of bounds\n");
|
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#endif
|
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return H_DEST_PARM;
|
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} |
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tce = dev->rtce_table[taddr >> SPAPR_VIO_TCE_PAGE_SHIFT].tce; |
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|
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/* How much til end of page ? */
|
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lsize = MIN(size, ((~taddr) & SPAPR_VIO_TCE_PAGE_MASK) + 1);
|
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|
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/* Check TCE */
|
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if (!(tce & 1)) { |
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return H_DEST_PARM;
|
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} |
| 349 |
|
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/* Translate */
|
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txaddr = (tce & ~SPAPR_VIO_TCE_PAGE_MASK) | |
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(taddr & SPAPR_VIO_TCE_PAGE_MASK); |
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|
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#ifdef DEBUG_TCE
|
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fprintf(stderr, " -> write to txaddr=0x%llx, size=0x%x\n",
|
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(unsigned long long)txaddr, lsize); |
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#endif
|
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/* Do it */
|
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cpu_physical_memory_read(txaddr, buf, lsize); |
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buf += lsize; |
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taddr += lsize; |
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size -= lsize; |
| 363 |
} |
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return H_SUCCESS;
|
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} |
| 366 |
|
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uint64_t ldq_tce(VIOsPAPRDevice *dev, uint64_t taddr) |
| 368 |
{
|
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uint64_t val; |
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|
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spapr_tce_dma_read(dev, taddr, &val, sizeof(val));
|
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return tswap64(val);
|
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} |
| 374 |
|
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/*
|
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* CRQ handling
|
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*/
|
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static target_ulong h_reg_crq(CPUState *env, sPAPREnvironment *spapr,
|
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target_ulong opcode, target_ulong *args) |
| 380 |
{
|
| 381 |
target_ulong reg = args[0];
|
| 382 |
target_ulong queue_addr = args[1];
|
| 383 |
target_ulong queue_len = args[2];
|
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VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
| 385 |
|
| 386 |
if (!dev) {
|
| 387 |
hcall_dprintf("h_reg_crq on non-existent unit 0x"
|
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TARGET_FMT_lx "\n", reg);
|
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return H_PARAMETER;
|
| 390 |
} |
| 391 |
|
| 392 |
/* We can't grok a queue size bigger than 256M for now */
|
| 393 |
if (queue_len < 0x1000 || queue_len > 0x10000000) { |
| 394 |
hcall_dprintf("h_reg_crq, queue size too small or too big (0x%llx)\n",
|
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(unsigned long long)queue_len); |
| 396 |
return H_PARAMETER;
|
| 397 |
} |
| 398 |
|
| 399 |
/* Check queue alignment */
|
| 400 |
if (queue_addr & 0xfff) { |
| 401 |
hcall_dprintf("h_reg_crq, queue not aligned (0x%llx)\n",
|
| 402 |
(unsigned long long)queue_addr); |
| 403 |
return H_PARAMETER;
|
| 404 |
} |
| 405 |
|
| 406 |
/* Check if device supports CRQs */
|
| 407 |
if (!dev->crq.SendFunc) {
|
| 408 |
return H_NOT_FOUND;
|
| 409 |
} |
| 410 |
|
| 411 |
|
| 412 |
/* Already a queue ? */
|
| 413 |
if (dev->crq.qsize) {
|
| 414 |
return H_RESOURCE;
|
| 415 |
} |
| 416 |
dev->crq.qladdr = queue_addr; |
| 417 |
dev->crq.qsize = queue_len; |
| 418 |
dev->crq.qnext = 0;
|
| 419 |
|
| 420 |
dprintf("CRQ for dev 0x" TARGET_FMT_lx " registered at 0x" |
| 421 |
TARGET_FMT_lx "/0x" TARGET_FMT_lx "\n", |
| 422 |
reg, queue_addr, queue_len); |
| 423 |
return H_SUCCESS;
|
| 424 |
} |
| 425 |
|
| 426 |
static target_ulong h_free_crq(CPUState *env, sPAPREnvironment *spapr,
|
| 427 |
target_ulong opcode, target_ulong *args) |
| 428 |
{
|
| 429 |
target_ulong reg = args[0];
|
| 430 |
VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
| 431 |
|
| 432 |
if (!dev) {
|
| 433 |
hcall_dprintf("h_free_crq on non-existent unit 0x"
|
| 434 |
TARGET_FMT_lx "\n", reg);
|
| 435 |
return H_PARAMETER;
|
| 436 |
} |
| 437 |
|
| 438 |
dev->crq.qladdr = 0;
|
| 439 |
dev->crq.qsize = 0;
|
| 440 |
dev->crq.qnext = 0;
|
| 441 |
|
| 442 |
dprintf("CRQ for dev 0x" TARGET_FMT_lx " freed\n", reg); |
| 443 |
|
| 444 |
return H_SUCCESS;
|
| 445 |
} |
| 446 |
|
| 447 |
static target_ulong h_send_crq(CPUState *env, sPAPREnvironment *spapr,
|
| 448 |
target_ulong opcode, target_ulong *args) |
| 449 |
{
|
| 450 |
target_ulong reg = args[0];
|
| 451 |
target_ulong msg_hi = args[1];
|
| 452 |
target_ulong msg_lo = args[2];
|
| 453 |
VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
| 454 |
uint64_t crq_mangle[2];
|
| 455 |
|
| 456 |
if (!dev) {
|
| 457 |
hcall_dprintf("h_send_crq on non-existent unit 0x"
|
| 458 |
TARGET_FMT_lx "\n", reg);
|
| 459 |
return H_PARAMETER;
|
| 460 |
} |
| 461 |
crq_mangle[0] = cpu_to_be64(msg_hi);
|
| 462 |
crq_mangle[1] = cpu_to_be64(msg_lo);
|
| 463 |
|
| 464 |
if (dev->crq.SendFunc) {
|
| 465 |
return dev->crq.SendFunc(dev, (uint8_t *)crq_mangle);
|
| 466 |
} |
| 467 |
|
| 468 |
return H_HARDWARE;
|
| 469 |
} |
| 470 |
|
| 471 |
static target_ulong h_enable_crq(CPUState *env, sPAPREnvironment *spapr,
|
| 472 |
target_ulong opcode, target_ulong *args) |
| 473 |
{
|
| 474 |
target_ulong reg = args[0];
|
| 475 |
VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
| 476 |
|
| 477 |
if (!dev) {
|
| 478 |
hcall_dprintf("h_enable_crq on non-existent unit 0x"
|
| 479 |
TARGET_FMT_lx "\n", reg);
|
| 480 |
return H_PARAMETER;
|
| 481 |
} |
| 482 |
|
| 483 |
return 0; |
| 484 |
} |
| 485 |
|
| 486 |
/* Returns negative error, 0 success, or positive: queue full */
|
| 487 |
int spapr_vio_send_crq(VIOsPAPRDevice *dev, uint8_t *crq)
|
| 488 |
{
|
| 489 |
int rc;
|
| 490 |
uint8_t byte; |
| 491 |
|
| 492 |
if (!dev->crq.qsize) {
|
| 493 |
fprintf(stderr, "spapr_vio_send_creq on uninitialized queue\n");
|
| 494 |
return -1; |
| 495 |
} |
| 496 |
|
| 497 |
/* Maybe do a fast path for KVM just writing to the pages */
|
| 498 |
rc = spapr_tce_dma_read(dev, dev->crq.qladdr + dev->crq.qnext, &byte, 1);
|
| 499 |
if (rc) {
|
| 500 |
return rc;
|
| 501 |
} |
| 502 |
if (byte != 0) { |
| 503 |
return 1; |
| 504 |
} |
| 505 |
|
| 506 |
rc = spapr_tce_dma_write(dev, dev->crq.qladdr + dev->crq.qnext + 8,
|
| 507 |
&crq[8], 8); |
| 508 |
if (rc) {
|
| 509 |
return rc;
|
| 510 |
} |
| 511 |
|
| 512 |
kvmppc_eieio(); |
| 513 |
|
| 514 |
rc = spapr_tce_dma_write(dev, dev->crq.qladdr + dev->crq.qnext, crq, 8);
|
| 515 |
if (rc) {
|
| 516 |
return rc;
|
| 517 |
} |
| 518 |
|
| 519 |
dev->crq.qnext = (dev->crq.qnext + 16) % dev->crq.qsize;
|
| 520 |
|
| 521 |
if (dev->signal_state & 1) { |
| 522 |
qemu_irq_pulse(dev->qirq); |
| 523 |
} |
| 524 |
|
| 525 |
return 0; |
| 526 |
} |
| 527 |
|
| 528 |
/* "quiesce" handling */
|
| 529 |
|
| 530 |
static void spapr_vio_quiesce_one(VIOsPAPRDevice *dev) |
| 531 |
{
|
| 532 |
dev->flags &= ~VIO_PAPR_FLAG_DMA_BYPASS; |
| 533 |
|
| 534 |
if (dev->rtce_table) {
|
| 535 |
size_t size = (dev->rtce_window_size >> SPAPR_VIO_TCE_PAGE_SHIFT) |
| 536 |
* sizeof(VIOsPAPR_RTCE);
|
| 537 |
memset(dev->rtce_table, 0, size);
|
| 538 |
} |
| 539 |
|
| 540 |
dev->crq.qladdr = 0;
|
| 541 |
dev->crq.qsize = 0;
|
| 542 |
dev->crq.qnext = 0;
|
| 543 |
} |
| 544 |
|
| 545 |
static void rtas_set_tce_bypass(sPAPREnvironment *spapr, uint32_t token, |
| 546 |
uint32_t nargs, target_ulong args, |
| 547 |
uint32_t nret, target_ulong rets) |
| 548 |
{
|
| 549 |
VIOsPAPRBus *bus = spapr->vio_bus; |
| 550 |
VIOsPAPRDevice *dev; |
| 551 |
uint32_t unit, enable; |
| 552 |
|
| 553 |
if (nargs != 2) { |
| 554 |
rtas_st(rets, 0, -3); |
| 555 |
return;
|
| 556 |
} |
| 557 |
unit = rtas_ld(args, 0);
|
| 558 |
enable = rtas_ld(args, 1);
|
| 559 |
dev = spapr_vio_find_by_reg(bus, unit); |
| 560 |
if (!dev) {
|
| 561 |
rtas_st(rets, 0, -3); |
| 562 |
return;
|
| 563 |
} |
| 564 |
if (enable) {
|
| 565 |
dev->flags |= VIO_PAPR_FLAG_DMA_BYPASS; |
| 566 |
} else {
|
| 567 |
dev->flags &= ~VIO_PAPR_FLAG_DMA_BYPASS; |
| 568 |
} |
| 569 |
|
| 570 |
rtas_st(rets, 0, 0); |
| 571 |
} |
| 572 |
|
| 573 |
static void rtas_quiesce(sPAPREnvironment *spapr, uint32_t token, |
| 574 |
uint32_t nargs, target_ulong args, |
| 575 |
uint32_t nret, target_ulong rets) |
| 576 |
{
|
| 577 |
VIOsPAPRBus *bus = spapr->vio_bus; |
| 578 |
DeviceState *qdev; |
| 579 |
VIOsPAPRDevice *dev = NULL;
|
| 580 |
|
| 581 |
if (nargs != 0) { |
| 582 |
rtas_st(rets, 0, -3); |
| 583 |
return;
|
| 584 |
} |
| 585 |
|
| 586 |
QLIST_FOREACH(qdev, &bus->bus.children, sibling) {
|
| 587 |
dev = (VIOsPAPRDevice *)qdev; |
| 588 |
spapr_vio_quiesce_one(dev); |
| 589 |
} |
| 590 |
|
| 591 |
rtas_st(rets, 0, 0); |
| 592 |
} |
| 593 |
|
| 594 |
static int spapr_vio_busdev_init(DeviceState *qdev, DeviceInfo *qinfo) |
| 595 |
{
|
| 596 |
VIOsPAPRDeviceInfo *info = (VIOsPAPRDeviceInfo *)qinfo; |
| 597 |
VIOsPAPRDevice *dev = (VIOsPAPRDevice *)qdev; |
| 598 |
char *id;
|
| 599 |
|
| 600 |
if (asprintf(&id, "%s@%x", info->dt_name, dev->reg) < 0) { |
| 601 |
return -1; |
| 602 |
} |
| 603 |
|
| 604 |
dev->qdev.id = id; |
| 605 |
|
| 606 |
rtce_init(dev); |
| 607 |
|
| 608 |
return info->init(dev);
|
| 609 |
} |
| 610 |
|
| 611 |
void spapr_vio_bus_register_withprop(VIOsPAPRDeviceInfo *info)
|
| 612 |
{
|
| 613 |
info->qdev.init = spapr_vio_busdev_init; |
| 614 |
info->qdev.bus_info = &spapr_vio_bus_info; |
| 615 |
|
| 616 |
assert(info->qdev.size >= sizeof(VIOsPAPRDevice));
|
| 617 |
qdev_register(&info->qdev); |
| 618 |
} |
| 619 |
|
| 620 |
static target_ulong h_vio_signal(CPUState *env, sPAPREnvironment *spapr,
|
| 621 |
target_ulong opcode, |
| 622 |
target_ulong *args) |
| 623 |
{
|
| 624 |
target_ulong reg = args[0];
|
| 625 |
target_ulong mode = args[1];
|
| 626 |
VIOsPAPRDevice *dev = spapr_vio_find_by_reg(spapr->vio_bus, reg); |
| 627 |
VIOsPAPRDeviceInfo *info; |
| 628 |
|
| 629 |
if (!dev) {
|
| 630 |
return H_PARAMETER;
|
| 631 |
} |
| 632 |
|
| 633 |
info = (VIOsPAPRDeviceInfo *)dev->qdev.info; |
| 634 |
|
| 635 |
if (mode & ~info->signal_mask) {
|
| 636 |
return H_PARAMETER;
|
| 637 |
} |
| 638 |
|
| 639 |
dev->signal_state = mode; |
| 640 |
|
| 641 |
return H_SUCCESS;
|
| 642 |
} |
| 643 |
|
| 644 |
VIOsPAPRBus *spapr_vio_bus_init(void)
|
| 645 |
{
|
| 646 |
VIOsPAPRBus *bus; |
| 647 |
BusState *qbus; |
| 648 |
DeviceState *dev; |
| 649 |
DeviceInfo *qinfo; |
| 650 |
|
| 651 |
/* Create bridge device */
|
| 652 |
dev = qdev_create(NULL, "spapr-vio-bridge"); |
| 653 |
qdev_init_nofail(dev); |
| 654 |
|
| 655 |
/* Create bus on bridge device */
|
| 656 |
|
| 657 |
qbus = qbus_create(&spapr_vio_bus_info, dev, "spapr-vio");
|
| 658 |
bus = DO_UPCAST(VIOsPAPRBus, bus, qbus); |
| 659 |
|
| 660 |
/* hcall-vio */
|
| 661 |
spapr_register_hypercall(H_VIO_SIGNAL, h_vio_signal); |
| 662 |
|
| 663 |
/* hcall-tce */
|
| 664 |
spapr_register_hypercall(H_PUT_TCE, h_put_tce); |
| 665 |
|
| 666 |
/* hcall-crq */
|
| 667 |
spapr_register_hypercall(H_REG_CRQ, h_reg_crq); |
| 668 |
spapr_register_hypercall(H_FREE_CRQ, h_free_crq); |
| 669 |
spapr_register_hypercall(H_SEND_CRQ, h_send_crq); |
| 670 |
spapr_register_hypercall(H_ENABLE_CRQ, h_enable_crq); |
| 671 |
|
| 672 |
/* RTAS calls */
|
| 673 |
spapr_rtas_register("ibm,set-tce-bypass", rtas_set_tce_bypass);
|
| 674 |
spapr_rtas_register("quiesce", rtas_quiesce);
|
| 675 |
|
| 676 |
for (qinfo = device_info_list; qinfo; qinfo = qinfo->next) {
|
| 677 |
VIOsPAPRDeviceInfo *info = (VIOsPAPRDeviceInfo *)qinfo; |
| 678 |
|
| 679 |
if (qinfo->bus_info != &spapr_vio_bus_info) {
|
| 680 |
continue;
|
| 681 |
} |
| 682 |
|
| 683 |
if (info->hcalls) {
|
| 684 |
info->hcalls(bus); |
| 685 |
} |
| 686 |
} |
| 687 |
|
| 688 |
return bus;
|
| 689 |
} |
| 690 |
|
| 691 |
/* Represents sPAPR hcall VIO devices */
|
| 692 |
|
| 693 |
static int spapr_vio_bridge_init(SysBusDevice *dev) |
| 694 |
{
|
| 695 |
/* nothing */
|
| 696 |
return 0; |
| 697 |
} |
| 698 |
|
| 699 |
static SysBusDeviceInfo spapr_vio_bridge_info = {
|
| 700 |
.init = spapr_vio_bridge_init, |
| 701 |
.qdev.name = "spapr-vio-bridge",
|
| 702 |
.qdev.size = sizeof(SysBusDevice),
|
| 703 |
.qdev.no_user = 1,
|
| 704 |
}; |
| 705 |
|
| 706 |
static void spapr_vio_register_devices(void) |
| 707 |
{
|
| 708 |
sysbus_register_withprop(&spapr_vio_bridge_info); |
| 709 |
} |
| 710 |
|
| 711 |
device_init(spapr_vio_register_devices) |
| 712 |
|
| 713 |
#ifdef CONFIG_FDT
|
| 714 |
int spapr_populate_vdevice(VIOsPAPRBus *bus, void *fdt) |
| 715 |
{
|
| 716 |
DeviceState *qdev; |
| 717 |
int ret = 0; |
| 718 |
|
| 719 |
QLIST_FOREACH(qdev, &bus->bus.children, sibling) {
|
| 720 |
VIOsPAPRDevice *dev = (VIOsPAPRDevice *)qdev; |
| 721 |
|
| 722 |
ret = vio_make_devnode(dev, fdt); |
| 723 |
|
| 724 |
if (ret < 0) { |
| 725 |
return ret;
|
| 726 |
} |
| 727 |
} |
| 728 |
|
| 729 |
return 0; |
| 730 |
} |
| 731 |
#endif /* CONFIG_FDT */ |