arm_ss = ss.source_set()
arm_ss.add(files('boot.c'), fdt)
-arm_ss.add(when: 'CONFIG_PLATFORM_BUS', if_true: files('sysbus-fdt.c'))
arm_ss.add(when: 'CONFIG_ARM_VIRT', if_true: files('virt.c'))
arm_ss.add(when: 'CONFIG_ACPI', if_true: files('virt-acpi-build.c'))
arm_ss.add(when: 'CONFIG_DIGIC', if_true: files('digic_boards.c'))
+++ /dev/null
-/*
- * ARM Platform Bus device tree generation helpers
- *
- * Copyright (c) 2014 Linaro Limited
- *
- * Authors:
- * Alex Graf <agraf@suse.de>
- * Eric Auger <eric.auger@linaro.org>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2 or later, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-#include "qemu/osdep.h"
-#include "qapi/error.h"
-#include <libfdt.h>
-#ifdef CONFIG_LINUX
-#include <linux/vfio.h>
-#endif
-#include "hw/arm/sysbus-fdt.h"
-#include "qemu/error-report.h"
-#include "sysemu/device_tree.h"
-#include "sysemu/tpm.h"
-#include "hw/platform-bus.h"
-#include "hw/vfio/vfio-platform.h"
-#include "hw/vfio/vfio-calxeda-xgmac.h"
-#include "hw/vfio/vfio-amd-xgbe.h"
-#include "hw/display/ramfb.h"
-#include "hw/arm/fdt.h"
-
-/*
- * internal struct that contains the information to create dynamic
- * sysbus device node
- */
-typedef struct PlatformBusFDTData {
- void *fdt; /* device tree handle */
- int irq_start; /* index of the first IRQ usable by platform bus devices */
- const char *pbus_node_name; /* name of the platform bus node */
- PlatformBusDevice *pbus;
-} PlatformBusFDTData;
-
-/* struct that allows to match a device and create its FDT node */
-typedef struct BindingEntry {
- const char *typename;
- const char *compat;
- int (*add_fn)(SysBusDevice *sbdev, void *opaque);
- bool (*match_fn)(SysBusDevice *sbdev, const struct BindingEntry *combo);
-} BindingEntry;
-
-/* helpers */
-
-typedef struct HostProperty {
- const char *name;
- bool optional;
-} HostProperty;
-
-#ifdef CONFIG_LINUX
-
-/**
- * copy_properties_from_host
- *
- * copies properties listed in an array from host device tree to
- * guest device tree. If a non optional property is not found, the
- * function asserts. An optional property is ignored if not found
- * in the host device tree.
- * @props: array of HostProperty to copy
- * @nb_props: number of properties in the array
- * @host_dt: host device tree blob
- * @guest_dt: guest device tree blob
- * @node_path: host dt node path where the property is supposed to be
- found
- * @nodename: guest node name the properties should be added to
- */
-static void copy_properties_from_host(HostProperty *props, int nb_props,
- void *host_fdt, void *guest_fdt,
- char *node_path, char *nodename)
-{
- int i, prop_len;
- const void *r;
- Error *err = NULL;
-
- for (i = 0; i < nb_props; i++) {
- r = qemu_fdt_getprop(host_fdt, node_path,
- props[i].name,
- &prop_len,
- &err);
- if (r) {
- qemu_fdt_setprop(guest_fdt, nodename,
- props[i].name, r, prop_len);
- } else {
- if (props[i].optional && prop_len == -FDT_ERR_NOTFOUND) {
- /* optional property does not exist */
- error_free(err);
- } else {
- error_report_err(err);
- }
- if (!props[i].optional) {
- /* mandatory property not found: bail out */
- exit(1);
- }
- err = NULL;
- }
- }
-}
-
-/* clock properties whose values are copied/pasted from host */
-static HostProperty clock_copied_properties[] = {
- {"compatible", false},
- {"#clock-cells", false},
- {"clock-frequency", true},
- {"clock-output-names", true},
-};
-
-/**
- * fdt_build_clock_node
- *
- * Build a guest clock node, used as a dependency from a passthrough'ed
- * device. Most information are retrieved from the host clock node.
- * Also check the host clock is a fixed one.
- *
- * @host_fdt: host device tree blob from which info are retrieved
- * @guest_fdt: guest device tree blob where the clock node is added
- * @host_phandle: phandle of the clock in host device tree
- * @guest_phandle: phandle to assign to the guest node
- */
-static void fdt_build_clock_node(void *host_fdt, void *guest_fdt,
- uint32_t host_phandle,
- uint32_t guest_phandle)
-{
- char *node_path = NULL;
- char *nodename;
- const void *r;
- int ret, node_offset, prop_len, path_len = 16;
-
- node_offset = fdt_node_offset_by_phandle(host_fdt, host_phandle);
- if (node_offset <= 0) {
- error_report("not able to locate clock handle %d in host device tree",
- host_phandle);
- exit(1);
- }
- node_path = g_malloc(path_len);
- while ((ret = fdt_get_path(host_fdt, node_offset, node_path, path_len))
- == -FDT_ERR_NOSPACE) {
- path_len += 16;
- node_path = g_realloc(node_path, path_len);
- }
- if (ret < 0) {
- error_report("not able to retrieve node path for clock handle %d",
- host_phandle);
- exit(1);
- }
-
- r = qemu_fdt_getprop(host_fdt, node_path, "compatible", &prop_len,
- &error_fatal);
- if (strcmp(r, "fixed-clock")) {
- error_report("clock handle %d is not a fixed clock", host_phandle);
- exit(1);
- }
-
- nodename = strrchr(node_path, '/');
- qemu_fdt_add_subnode(guest_fdt, nodename);
-
- copy_properties_from_host(clock_copied_properties,
- ARRAY_SIZE(clock_copied_properties),
- host_fdt, guest_fdt,
- node_path, nodename);
-
- qemu_fdt_setprop_cell(guest_fdt, nodename, "phandle", guest_phandle);
-
- g_free(node_path);
-}
-
-/**
- * sysfs_to_dt_name: convert the name found in sysfs into the node name
- * for instance e0900000.xgmac is converted into xgmac@e0900000
- * @sysfs_name: directory name in sysfs
- *
- * returns the device tree name upon success or NULL in case the sysfs name
- * does not match the expected format
- */
-static char *sysfs_to_dt_name(const char *sysfs_name)
-{
- gchar **substrings = g_strsplit(sysfs_name, ".", 2);
- char *dt_name = NULL;
-
- if (!substrings || !substrings[0] || !substrings[1]) {
- goto out;
- }
- dt_name = g_strdup_printf("%s@%s", substrings[1], substrings[0]);
-out:
- g_strfreev(substrings);
- return dt_name;
-}
-
-/* Device Specific Code */
-
-/**
- * add_calxeda_midway_xgmac_fdt_node
- *
- * Generates a simple node with following properties:
- * compatible string, regs, interrupts, dma-coherent
- */
-static int add_calxeda_midway_xgmac_fdt_node(SysBusDevice *sbdev, void *opaque)
-{
- PlatformBusFDTData *data = opaque;
- PlatformBusDevice *pbus = data->pbus;
- void *fdt = data->fdt;
- const char *parent_node = data->pbus_node_name;
- int compat_str_len, i;
- char *nodename;
- uint32_t *irq_attr, *reg_attr;
- uint64_t mmio_base, irq_number;
- VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(sbdev);
- VFIODevice *vbasedev = &vdev->vbasedev;
-
- mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
- nodename = g_strdup_printf("%s/%s@%" PRIx64, parent_node,
- vbasedev->name, mmio_base);
- qemu_fdt_add_subnode(fdt, nodename);
-
- compat_str_len = strlen(vdev->compat) + 1;
- qemu_fdt_setprop(fdt, nodename, "compatible",
- vdev->compat, compat_str_len);
-
- qemu_fdt_setprop(fdt, nodename, "dma-coherent", "", 0);
-
- reg_attr = g_new(uint32_t, vbasedev->num_regions * 2);
- for (i = 0; i < vbasedev->num_regions; i++) {
- mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, i);
- reg_attr[2 * i] = cpu_to_be32(mmio_base);
- reg_attr[2 * i + 1] = cpu_to_be32(
- memory_region_size(vdev->regions[i]->mem));
- }
- qemu_fdt_setprop(fdt, nodename, "reg", reg_attr,
- vbasedev->num_regions * 2 * sizeof(uint32_t));
-
- irq_attr = g_new(uint32_t, vbasedev->num_irqs * 3);
- for (i = 0; i < vbasedev->num_irqs; i++) {
- irq_number = platform_bus_get_irqn(pbus, sbdev , i)
- + data->irq_start;
- irq_attr[3 * i] = cpu_to_be32(GIC_FDT_IRQ_TYPE_SPI);
- irq_attr[3 * i + 1] = cpu_to_be32(irq_number);
- irq_attr[3 * i + 2] = cpu_to_be32(GIC_FDT_IRQ_FLAGS_LEVEL_HI);
- }
- qemu_fdt_setprop(fdt, nodename, "interrupts",
- irq_attr, vbasedev->num_irqs * 3 * sizeof(uint32_t));
- g_free(irq_attr);
- g_free(reg_attr);
- g_free(nodename);
- return 0;
-}
-
-/* AMD xgbe properties whose values are copied/pasted from host */
-static HostProperty amd_xgbe_copied_properties[] = {
- {"compatible", false},
- {"dma-coherent", true},
- {"amd,per-channel-interrupt", true},
- {"phy-mode", false},
- {"mac-address", true},
- {"amd,speed-set", false},
- {"amd,serdes-blwc", true},
- {"amd,serdes-cdr-rate", true},
- {"amd,serdes-pq-skew", true},
- {"amd,serdes-tx-amp", true},
- {"amd,serdes-dfe-tap-config", true},
- {"amd,serdes-dfe-tap-enable", true},
- {"clock-names", false},
-};
-
-/**
- * add_amd_xgbe_fdt_node
- *
- * Generates the combined xgbe/phy node following kernel >=4.2
- * binding documentation:
- * Documentation/devicetree/bindings/net/amd-xgbe.txt:
- * Also 2 clock nodes are created (dma and ptp)
- *
- * Asserts in case of error
- */
-static int add_amd_xgbe_fdt_node(SysBusDevice *sbdev, void *opaque)
-{
- PlatformBusFDTData *data = opaque;
- PlatformBusDevice *pbus = data->pbus;
- VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(sbdev);
- VFIODevice *vbasedev = &vdev->vbasedev;
- VFIOINTp *intp;
- const char *parent_node = data->pbus_node_name;
- char **node_path, *nodename, *dt_name;
- void *guest_fdt = data->fdt, *host_fdt;
- const void *r;
- int i, prop_len;
- uint32_t *irq_attr, *reg_attr, *host_clock_phandles;
- uint64_t mmio_base, irq_number;
- uint32_t guest_clock_phandles[2];
-
- host_fdt = load_device_tree_from_sysfs();
-
- dt_name = sysfs_to_dt_name(vbasedev->name);
- if (!dt_name) {
- error_report("%s incorrect sysfs device name %s",
- __func__, vbasedev->name);
- exit(1);
- }
- node_path = qemu_fdt_node_path(host_fdt, dt_name, vdev->compat,
- &error_fatal);
- if (!node_path || !node_path[0]) {
- error_report("%s unable to retrieve node path for %s/%s",
- __func__, dt_name, vdev->compat);
- exit(1);
- }
-
- if (node_path[1]) {
- error_report("%s more than one node matching %s/%s!",
- __func__, dt_name, vdev->compat);
- exit(1);
- }
-
- g_free(dt_name);
-
- if (vbasedev->num_regions != 5) {
- error_report("%s Does the host dt node combine XGBE/PHY?", __func__);
- exit(1);
- }
-
- /* generate nodes for DMA_CLK and PTP_CLK */
- r = qemu_fdt_getprop(host_fdt, node_path[0], "clocks",
- &prop_len, &error_fatal);
- if (prop_len != 8) {
- error_report("%s clocks property should contain 2 handles", __func__);
- exit(1);
- }
- host_clock_phandles = (uint32_t *)r;
- guest_clock_phandles[0] = qemu_fdt_alloc_phandle(guest_fdt);
- guest_clock_phandles[1] = qemu_fdt_alloc_phandle(guest_fdt);
-
- /**
- * clock handles fetched from host dt are in be32 layout whereas
- * rest of the code uses cpu layout. Also guest clock handles are
- * in cpu layout.
- */
- fdt_build_clock_node(host_fdt, guest_fdt,
- be32_to_cpu(host_clock_phandles[0]),
- guest_clock_phandles[0]);
-
- fdt_build_clock_node(host_fdt, guest_fdt,
- be32_to_cpu(host_clock_phandles[1]),
- guest_clock_phandles[1]);
-
- /* combined XGBE/PHY node */
- mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
- nodename = g_strdup_printf("%s/%s@%" PRIx64, parent_node,
- vbasedev->name, mmio_base);
- qemu_fdt_add_subnode(guest_fdt, nodename);
-
- copy_properties_from_host(amd_xgbe_copied_properties,
- ARRAY_SIZE(amd_xgbe_copied_properties),
- host_fdt, guest_fdt,
- node_path[0], nodename);
-
- qemu_fdt_setprop_cells(guest_fdt, nodename, "clocks",
- guest_clock_phandles[0],
- guest_clock_phandles[1]);
-
- reg_attr = g_new(uint32_t, vbasedev->num_regions * 2);
- for (i = 0; i < vbasedev->num_regions; i++) {
- mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, i);
- reg_attr[2 * i] = cpu_to_be32(mmio_base);
- reg_attr[2 * i + 1] = cpu_to_be32(
- memory_region_size(vdev->regions[i]->mem));
- }
- qemu_fdt_setprop(guest_fdt, nodename, "reg", reg_attr,
- vbasedev->num_regions * 2 * sizeof(uint32_t));
-
- irq_attr = g_new(uint32_t, vbasedev->num_irqs * 3);
- for (i = 0; i < vbasedev->num_irqs; i++) {
- irq_number = platform_bus_get_irqn(pbus, sbdev , i)
- + data->irq_start;
- irq_attr[3 * i] = cpu_to_be32(GIC_FDT_IRQ_TYPE_SPI);
- irq_attr[3 * i + 1] = cpu_to_be32(irq_number);
- /*
- * General device interrupt and PCS auto-negotiation interrupts are
- * level-sensitive while the 4 per-channel interrupts are edge
- * sensitive
- */
- QLIST_FOREACH(intp, &vdev->intp_list, next) {
- if (intp->pin == i) {
- break;
- }
- }
- if (intp->flags & VFIO_IRQ_INFO_AUTOMASKED) {
- irq_attr[3 * i + 2] = cpu_to_be32(GIC_FDT_IRQ_FLAGS_LEVEL_HI);
- } else {
- irq_attr[3 * i + 2] = cpu_to_be32(GIC_FDT_IRQ_FLAGS_EDGE_LO_HI);
- }
- }
- qemu_fdt_setprop(guest_fdt, nodename, "interrupts",
- irq_attr, vbasedev->num_irqs * 3 * sizeof(uint32_t));
-
- g_free(host_fdt);
- g_strfreev(node_path);
- g_free(irq_attr);
- g_free(reg_attr);
- g_free(nodename);
- return 0;
-}
-
-/* DT compatible matching */
-static bool vfio_platform_match(SysBusDevice *sbdev,
- const BindingEntry *entry)
-{
- VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(sbdev);
- const char *compat;
- unsigned int n;
-
- for (n = vdev->num_compat, compat = vdev->compat; n > 0;
- n--, compat += strlen(compat) + 1) {
- if (!strcmp(entry->compat, compat)) {
- return true;
- }
- }
-
- return false;
-}
-
-#define VFIO_PLATFORM_BINDING(compat, add_fn) \
- {TYPE_VFIO_PLATFORM, (compat), (add_fn), vfio_platform_match}
-
-#endif /* CONFIG_LINUX */
-
-#ifdef CONFIG_TPM
-/*
- * add_tpm_tis_fdt_node: Create a DT node for TPM TIS
- *
- * See kernel documentation:
- * Documentation/devicetree/bindings/security/tpm/tpm_tis_mmio.txt
- * Optional interrupt for command completion is not exposed
- */
-static int add_tpm_tis_fdt_node(SysBusDevice *sbdev, void *opaque)
-{
- PlatformBusFDTData *data = opaque;
- PlatformBusDevice *pbus = data->pbus;
- void *fdt = data->fdt;
- const char *parent_node = data->pbus_node_name;
- char *nodename;
- uint32_t reg_attr[2];
- uint64_t mmio_base;
-
- mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
- nodename = g_strdup_printf("%s/tpm_tis@%" PRIx64, parent_node, mmio_base);
- qemu_fdt_add_subnode(fdt, nodename);
-
- qemu_fdt_setprop_string(fdt, nodename, "compatible", "tcg,tpm-tis-mmio");
-
- reg_attr[0] = cpu_to_be32(mmio_base);
- reg_attr[1] = cpu_to_be32(0x5000);
- qemu_fdt_setprop(fdt, nodename, "reg", reg_attr, 2 * sizeof(uint32_t));
-
- g_free(nodename);
- return 0;
-}
-#endif
-
-static int no_fdt_node(SysBusDevice *sbdev, void *opaque)
-{
- return 0;
-}
-
-/* Device type based matching */
-static bool type_match(SysBusDevice *sbdev, const BindingEntry *entry)
-{
- return !strcmp(object_get_typename(OBJECT(sbdev)), entry->typename);
-}
-
-#define TYPE_BINDING(type, add_fn) {(type), NULL, (add_fn), NULL}
-
-/* list of supported dynamic sysbus bindings */
-static const BindingEntry bindings[] = {
-#ifdef CONFIG_LINUX
- TYPE_BINDING(TYPE_VFIO_CALXEDA_XGMAC, add_calxeda_midway_xgmac_fdt_node),
- TYPE_BINDING(TYPE_VFIO_AMD_XGBE, add_amd_xgbe_fdt_node),
- VFIO_PLATFORM_BINDING("amd,xgbe-seattle-v1a", add_amd_xgbe_fdt_node),
-#endif
-#ifdef CONFIG_TPM
- TYPE_BINDING(TYPE_TPM_TIS_SYSBUS, add_tpm_tis_fdt_node),
-#endif
- TYPE_BINDING(TYPE_RAMFB_DEVICE, no_fdt_node),
- TYPE_BINDING("", NULL), /* last element */
-};
-
-/* Generic Code */
-
-/**
- * add_fdt_node - add the device tree node of a dynamic sysbus device
- *
- * @sbdev: handle to the sysbus device
- * @opaque: handle to the PlatformBusFDTData
- *
- * Checks the sysbus type belongs to the list of device types that
- * are dynamically instantiable and if so call the node creation
- * function.
- */
-static void add_fdt_node(SysBusDevice *sbdev, void *opaque)
-{
- int i, ret;
-
- for (i = 0; i < ARRAY_SIZE(bindings); i++) {
- const BindingEntry *iter = &bindings[i];
-
- if (type_match(sbdev, iter)) {
- if (!iter->match_fn || iter->match_fn(sbdev, iter)) {
- ret = iter->add_fn(sbdev, opaque);
- assert(!ret);
- return;
- }
- }
- }
- error_report("Device %s can not be dynamically instantiated",
- qdev_fw_name(DEVICE(sbdev)));
- exit(1);
-}
-
-void platform_bus_add_all_fdt_nodes(void *fdt, const char *intc, hwaddr addr,
- hwaddr bus_size, int irq_start)
-{
- const char platcomp[] = "qemu,platform\0simple-bus";
- PlatformBusDevice *pbus;
- DeviceState *dev;
- gchar *node;
-
- assert(fdt);
-
- node = g_strdup_printf("/platform@%"PRIx64, addr);
-
- /* Create a /platform node that we can put all devices into */
- qemu_fdt_add_subnode(fdt, node);
- qemu_fdt_setprop(fdt, node, "compatible", platcomp, sizeof(platcomp));
-
- /* Our platform bus region is less than 32bits, so 1 cell is enough for
- * address and size
- */
- qemu_fdt_setprop_cells(fdt, node, "#size-cells", 1);
- qemu_fdt_setprop_cells(fdt, node, "#address-cells", 1);
- qemu_fdt_setprop_cells(fdt, node, "ranges", 0, addr >> 32, addr, bus_size);
-
- qemu_fdt_setprop_phandle(fdt, node, "interrupt-parent", intc);
-
- dev = qdev_find_recursive(sysbus_get_default(), TYPE_PLATFORM_BUS_DEVICE);
- pbus = PLATFORM_BUS_DEVICE(dev);
-
- PlatformBusFDTData data = {
- .fdt = fdt,
- .irq_start = irq_start,
- .pbus_node_name = node,
- .pbus = pbus,
- };
-
- /* Loop through all dynamic sysbus devices and create their node */
- foreach_dynamic_sysbus_device(add_fdt_node, &data);
-
- g_free(node);
-}
#include "qemu/module.h"
#include "hw/pci-host/gpex.h"
#include "hw/virtio/virtio-pci.h"
-#include "hw/arm/sysbus-fdt.h"
+#include "hw/core/sysbus-fdt.h"
#include "hw/platform-bus.h"
#include "hw/qdev-properties.h"
#include "hw/arm/fdt.h"
#include "sysemu/device_tree.h"
#include "hw/boards.h"
#include "hw/sysbus.h"
-#include "hw/arm/sysbus-fdt.h"
#include "hw/arm/fdt.h"
#include "cpu.h"
#include "hw/qdev-properties.h"
softmmu_ss.add(when: 'CONFIG_REGISTER', if_true: files('register.c'))
softmmu_ss.add(when: 'CONFIG_SPLIT_IRQ', if_true: files('split-irq.c'))
softmmu_ss.add(when: 'CONFIG_XILINX_AXI', if_true: files('stream.c'))
+softmmu_ss.add(when: 'CONFIG_PLATFORM_BUS', if_true: files('sysbus-fdt.c'))
softmmu_ss.add(files(
'cpu-sysemu.c',
--- /dev/null
+/*
+ * ARM Platform Bus device tree generation helpers
+ *
+ * Copyright (c) 2014 Linaro Limited
+ *
+ * Authors:
+ * Alex Graf <agraf@suse.de>
+ * Eric Auger <eric.auger@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2 or later, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include <libfdt.h>
+#ifdef CONFIG_LINUX
+#include <linux/vfio.h>
+#endif
+#include "hw/core/sysbus-fdt.h"
+#include "qemu/error-report.h"
+#include "sysemu/device_tree.h"
+#include "sysemu/tpm.h"
+#include "hw/platform-bus.h"
+#include "hw/vfio/vfio-platform.h"
+#include "hw/vfio/vfio-calxeda-xgmac.h"
+#include "hw/vfio/vfio-amd-xgbe.h"
+#include "hw/display/ramfb.h"
+#include "hw/arm/fdt.h"
+
+/*
+ * internal struct that contains the information to create dynamic
+ * sysbus device node
+ */
+typedef struct PlatformBusFDTData {
+ void *fdt; /* device tree handle */
+ int irq_start; /* index of the first IRQ usable by platform bus devices */
+ const char *pbus_node_name; /* name of the platform bus node */
+ PlatformBusDevice *pbus;
+} PlatformBusFDTData;
+
+/* struct that allows to match a device and create its FDT node */
+typedef struct BindingEntry {
+ const char *typename;
+ const char *compat;
+ int (*add_fn)(SysBusDevice *sbdev, void *opaque);
+ bool (*match_fn)(SysBusDevice *sbdev, const struct BindingEntry *combo);
+} BindingEntry;
+
+/* helpers */
+
+typedef struct HostProperty {
+ const char *name;
+ bool optional;
+} HostProperty;
+
+#ifdef CONFIG_LINUX
+
+/**
+ * copy_properties_from_host
+ *
+ * copies properties listed in an array from host device tree to
+ * guest device tree. If a non optional property is not found, the
+ * function asserts. An optional property is ignored if not found
+ * in the host device tree.
+ * @props: array of HostProperty to copy
+ * @nb_props: number of properties in the array
+ * @host_dt: host device tree blob
+ * @guest_dt: guest device tree blob
+ * @node_path: host dt node path where the property is supposed to be
+ found
+ * @nodename: guest node name the properties should be added to
+ */
+static void copy_properties_from_host(HostProperty *props, int nb_props,
+ void *host_fdt, void *guest_fdt,
+ char *node_path, char *nodename)
+{
+ int i, prop_len;
+ const void *r;
+ Error *err = NULL;
+
+ for (i = 0; i < nb_props; i++) {
+ r = qemu_fdt_getprop(host_fdt, node_path,
+ props[i].name,
+ &prop_len,
+ &err);
+ if (r) {
+ qemu_fdt_setprop(guest_fdt, nodename,
+ props[i].name, r, prop_len);
+ } else {
+ if (props[i].optional && prop_len == -FDT_ERR_NOTFOUND) {
+ /* optional property does not exist */
+ error_free(err);
+ } else {
+ error_report_err(err);
+ }
+ if (!props[i].optional) {
+ /* mandatory property not found: bail out */
+ exit(1);
+ }
+ err = NULL;
+ }
+ }
+}
+
+/* clock properties whose values are copied/pasted from host */
+static HostProperty clock_copied_properties[] = {
+ {"compatible", false},
+ {"#clock-cells", false},
+ {"clock-frequency", true},
+ {"clock-output-names", true},
+};
+
+/**
+ * fdt_build_clock_node
+ *
+ * Build a guest clock node, used as a dependency from a passthrough'ed
+ * device. Most information are retrieved from the host clock node.
+ * Also check the host clock is a fixed one.
+ *
+ * @host_fdt: host device tree blob from which info are retrieved
+ * @guest_fdt: guest device tree blob where the clock node is added
+ * @host_phandle: phandle of the clock in host device tree
+ * @guest_phandle: phandle to assign to the guest node
+ */
+static void fdt_build_clock_node(void *host_fdt, void *guest_fdt,
+ uint32_t host_phandle,
+ uint32_t guest_phandle)
+{
+ char *node_path = NULL;
+ char *nodename;
+ const void *r;
+ int ret, node_offset, prop_len, path_len = 16;
+
+ node_offset = fdt_node_offset_by_phandle(host_fdt, host_phandle);
+ if (node_offset <= 0) {
+ error_report("not able to locate clock handle %d in host device tree",
+ host_phandle);
+ exit(1);
+ }
+ node_path = g_malloc(path_len);
+ while ((ret = fdt_get_path(host_fdt, node_offset, node_path, path_len))
+ == -FDT_ERR_NOSPACE) {
+ path_len += 16;
+ node_path = g_realloc(node_path, path_len);
+ }
+ if (ret < 0) {
+ error_report("not able to retrieve node path for clock handle %d",
+ host_phandle);
+ exit(1);
+ }
+
+ r = qemu_fdt_getprop(host_fdt, node_path, "compatible", &prop_len,
+ &error_fatal);
+ if (strcmp(r, "fixed-clock")) {
+ error_report("clock handle %d is not a fixed clock", host_phandle);
+ exit(1);
+ }
+
+ nodename = strrchr(node_path, '/');
+ qemu_fdt_add_subnode(guest_fdt, nodename);
+
+ copy_properties_from_host(clock_copied_properties,
+ ARRAY_SIZE(clock_copied_properties),
+ host_fdt, guest_fdt,
+ node_path, nodename);
+
+ qemu_fdt_setprop_cell(guest_fdt, nodename, "phandle", guest_phandle);
+
+ g_free(node_path);
+}
+
+/**
+ * sysfs_to_dt_name: convert the name found in sysfs into the node name
+ * for instance e0900000.xgmac is converted into xgmac@e0900000
+ * @sysfs_name: directory name in sysfs
+ *
+ * returns the device tree name upon success or NULL in case the sysfs name
+ * does not match the expected format
+ */
+static char *sysfs_to_dt_name(const char *sysfs_name)
+{
+ gchar **substrings = g_strsplit(sysfs_name, ".", 2);
+ char *dt_name = NULL;
+
+ if (!substrings || !substrings[0] || !substrings[1]) {
+ goto out;
+ }
+ dt_name = g_strdup_printf("%s@%s", substrings[1], substrings[0]);
+out:
+ g_strfreev(substrings);
+ return dt_name;
+}
+
+/* Device Specific Code */
+
+/**
+ * add_calxeda_midway_xgmac_fdt_node
+ *
+ * Generates a simple node with following properties:
+ * compatible string, regs, interrupts, dma-coherent
+ */
+static int add_calxeda_midway_xgmac_fdt_node(SysBusDevice *sbdev, void *opaque)
+{
+ PlatformBusFDTData *data = opaque;
+ PlatformBusDevice *pbus = data->pbus;
+ void *fdt = data->fdt;
+ const char *parent_node = data->pbus_node_name;
+ int compat_str_len, i;
+ char *nodename;
+ uint32_t *irq_attr, *reg_attr;
+ uint64_t mmio_base, irq_number;
+ VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(sbdev);
+ VFIODevice *vbasedev = &vdev->vbasedev;
+
+ mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
+ nodename = g_strdup_printf("%s/%s@%" PRIx64, parent_node,
+ vbasedev->name, mmio_base);
+ qemu_fdt_add_subnode(fdt, nodename);
+
+ compat_str_len = strlen(vdev->compat) + 1;
+ qemu_fdt_setprop(fdt, nodename, "compatible",
+ vdev->compat, compat_str_len);
+
+ qemu_fdt_setprop(fdt, nodename, "dma-coherent", "", 0);
+
+ reg_attr = g_new(uint32_t, vbasedev->num_regions * 2);
+ for (i = 0; i < vbasedev->num_regions; i++) {
+ mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, i);
+ reg_attr[2 * i] = cpu_to_be32(mmio_base);
+ reg_attr[2 * i + 1] = cpu_to_be32(
+ memory_region_size(vdev->regions[i]->mem));
+ }
+ qemu_fdt_setprop(fdt, nodename, "reg", reg_attr,
+ vbasedev->num_regions * 2 * sizeof(uint32_t));
+
+ irq_attr = g_new(uint32_t, vbasedev->num_irqs * 3);
+ for (i = 0; i < vbasedev->num_irqs; i++) {
+ irq_number = platform_bus_get_irqn(pbus, sbdev , i)
+ + data->irq_start;
+ irq_attr[3 * i] = cpu_to_be32(GIC_FDT_IRQ_TYPE_SPI);
+ irq_attr[3 * i + 1] = cpu_to_be32(irq_number);
+ irq_attr[3 * i + 2] = cpu_to_be32(GIC_FDT_IRQ_FLAGS_LEVEL_HI);
+ }
+ qemu_fdt_setprop(fdt, nodename, "interrupts",
+ irq_attr, vbasedev->num_irqs * 3 * sizeof(uint32_t));
+ g_free(irq_attr);
+ g_free(reg_attr);
+ g_free(nodename);
+ return 0;
+}
+
+/* AMD xgbe properties whose values are copied/pasted from host */
+static HostProperty amd_xgbe_copied_properties[] = {
+ {"compatible", false},
+ {"dma-coherent", true},
+ {"amd,per-channel-interrupt", true},
+ {"phy-mode", false},
+ {"mac-address", true},
+ {"amd,speed-set", false},
+ {"amd,serdes-blwc", true},
+ {"amd,serdes-cdr-rate", true},
+ {"amd,serdes-pq-skew", true},
+ {"amd,serdes-tx-amp", true},
+ {"amd,serdes-dfe-tap-config", true},
+ {"amd,serdes-dfe-tap-enable", true},
+ {"clock-names", false},
+};
+
+/**
+ * add_amd_xgbe_fdt_node
+ *
+ * Generates the combined xgbe/phy node following kernel >=4.2
+ * binding documentation:
+ * Documentation/devicetree/bindings/net/amd-xgbe.txt:
+ * Also 2 clock nodes are created (dma and ptp)
+ *
+ * Asserts in case of error
+ */
+static int add_amd_xgbe_fdt_node(SysBusDevice *sbdev, void *opaque)
+{
+ PlatformBusFDTData *data = opaque;
+ PlatformBusDevice *pbus = data->pbus;
+ VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(sbdev);
+ VFIODevice *vbasedev = &vdev->vbasedev;
+ VFIOINTp *intp;
+ const char *parent_node = data->pbus_node_name;
+ char **node_path, *nodename, *dt_name;
+ void *guest_fdt = data->fdt, *host_fdt;
+ const void *r;
+ int i, prop_len;
+ uint32_t *irq_attr, *reg_attr, *host_clock_phandles;
+ uint64_t mmio_base, irq_number;
+ uint32_t guest_clock_phandles[2];
+
+ host_fdt = load_device_tree_from_sysfs();
+
+ dt_name = sysfs_to_dt_name(vbasedev->name);
+ if (!dt_name) {
+ error_report("%s incorrect sysfs device name %s",
+ __func__, vbasedev->name);
+ exit(1);
+ }
+ node_path = qemu_fdt_node_path(host_fdt, dt_name, vdev->compat,
+ &error_fatal);
+ if (!node_path || !node_path[0]) {
+ error_report("%s unable to retrieve node path for %s/%s",
+ __func__, dt_name, vdev->compat);
+ exit(1);
+ }
+
+ if (node_path[1]) {
+ error_report("%s more than one node matching %s/%s!",
+ __func__, dt_name, vdev->compat);
+ exit(1);
+ }
+
+ g_free(dt_name);
+
+ if (vbasedev->num_regions != 5) {
+ error_report("%s Does the host dt node combine XGBE/PHY?", __func__);
+ exit(1);
+ }
+
+ /* generate nodes for DMA_CLK and PTP_CLK */
+ r = qemu_fdt_getprop(host_fdt, node_path[0], "clocks",
+ &prop_len, &error_fatal);
+ if (prop_len != 8) {
+ error_report("%s clocks property should contain 2 handles", __func__);
+ exit(1);
+ }
+ host_clock_phandles = (uint32_t *)r;
+ guest_clock_phandles[0] = qemu_fdt_alloc_phandle(guest_fdt);
+ guest_clock_phandles[1] = qemu_fdt_alloc_phandle(guest_fdt);
+
+ /**
+ * clock handles fetched from host dt are in be32 layout whereas
+ * rest of the code uses cpu layout. Also guest clock handles are
+ * in cpu layout.
+ */
+ fdt_build_clock_node(host_fdt, guest_fdt,
+ be32_to_cpu(host_clock_phandles[0]),
+ guest_clock_phandles[0]);
+
+ fdt_build_clock_node(host_fdt, guest_fdt,
+ be32_to_cpu(host_clock_phandles[1]),
+ guest_clock_phandles[1]);
+
+ /* combined XGBE/PHY node */
+ mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
+ nodename = g_strdup_printf("%s/%s@%" PRIx64, parent_node,
+ vbasedev->name, mmio_base);
+ qemu_fdt_add_subnode(guest_fdt, nodename);
+
+ copy_properties_from_host(amd_xgbe_copied_properties,
+ ARRAY_SIZE(amd_xgbe_copied_properties),
+ host_fdt, guest_fdt,
+ node_path[0], nodename);
+
+ qemu_fdt_setprop_cells(guest_fdt, nodename, "clocks",
+ guest_clock_phandles[0],
+ guest_clock_phandles[1]);
+
+ reg_attr = g_new(uint32_t, vbasedev->num_regions * 2);
+ for (i = 0; i < vbasedev->num_regions; i++) {
+ mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, i);
+ reg_attr[2 * i] = cpu_to_be32(mmio_base);
+ reg_attr[2 * i + 1] = cpu_to_be32(
+ memory_region_size(vdev->regions[i]->mem));
+ }
+ qemu_fdt_setprop(guest_fdt, nodename, "reg", reg_attr,
+ vbasedev->num_regions * 2 * sizeof(uint32_t));
+
+ irq_attr = g_new(uint32_t, vbasedev->num_irqs * 3);
+ for (i = 0; i < vbasedev->num_irqs; i++) {
+ irq_number = platform_bus_get_irqn(pbus, sbdev , i)
+ + data->irq_start;
+ irq_attr[3 * i] = cpu_to_be32(GIC_FDT_IRQ_TYPE_SPI);
+ irq_attr[3 * i + 1] = cpu_to_be32(irq_number);
+ /*
+ * General device interrupt and PCS auto-negotiation interrupts are
+ * level-sensitive while the 4 per-channel interrupts are edge
+ * sensitive
+ */
+ QLIST_FOREACH(intp, &vdev->intp_list, next) {
+ if (intp->pin == i) {
+ break;
+ }
+ }
+ if (intp->flags & VFIO_IRQ_INFO_AUTOMASKED) {
+ irq_attr[3 * i + 2] = cpu_to_be32(GIC_FDT_IRQ_FLAGS_LEVEL_HI);
+ } else {
+ irq_attr[3 * i + 2] = cpu_to_be32(GIC_FDT_IRQ_FLAGS_EDGE_LO_HI);
+ }
+ }
+ qemu_fdt_setprop(guest_fdt, nodename, "interrupts",
+ irq_attr, vbasedev->num_irqs * 3 * sizeof(uint32_t));
+
+ g_free(host_fdt);
+ g_strfreev(node_path);
+ g_free(irq_attr);
+ g_free(reg_attr);
+ g_free(nodename);
+ return 0;
+}
+
+/* DT compatible matching */
+static bool vfio_platform_match(SysBusDevice *sbdev,
+ const BindingEntry *entry)
+{
+ VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(sbdev);
+ const char *compat;
+ unsigned int n;
+
+ for (n = vdev->num_compat, compat = vdev->compat; n > 0;
+ n--, compat += strlen(compat) + 1) {
+ if (!strcmp(entry->compat, compat)) {
+ return true;
+ }
+ }
+
+ return false;
+}
+
+#define VFIO_PLATFORM_BINDING(compat, add_fn) \
+ {TYPE_VFIO_PLATFORM, (compat), (add_fn), vfio_platform_match}
+
+#endif /* CONFIG_LINUX */
+
+#ifdef CONFIG_TPM
+/*
+ * add_tpm_tis_fdt_node: Create a DT node for TPM TIS
+ *
+ * See kernel documentation:
+ * Documentation/devicetree/bindings/security/tpm/tpm_tis_mmio.txt
+ * Optional interrupt for command completion is not exposed
+ */
+static int add_tpm_tis_fdt_node(SysBusDevice *sbdev, void *opaque)
+{
+ PlatformBusFDTData *data = opaque;
+ PlatformBusDevice *pbus = data->pbus;
+ void *fdt = data->fdt;
+ const char *parent_node = data->pbus_node_name;
+ char *nodename;
+ uint32_t reg_attr[2];
+ uint64_t mmio_base;
+
+ mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
+ nodename = g_strdup_printf("%s/tpm_tis@%" PRIx64, parent_node, mmio_base);
+ qemu_fdt_add_subnode(fdt, nodename);
+
+ qemu_fdt_setprop_string(fdt, nodename, "compatible", "tcg,tpm-tis-mmio");
+
+ reg_attr[0] = cpu_to_be32(mmio_base);
+ reg_attr[1] = cpu_to_be32(0x5000);
+ qemu_fdt_setprop(fdt, nodename, "reg", reg_attr, 2 * sizeof(uint32_t));
+
+ g_free(nodename);
+ return 0;
+}
+#endif
+
+static int no_fdt_node(SysBusDevice *sbdev, void *opaque)
+{
+ return 0;
+}
+
+/* Device type based matching */
+static bool type_match(SysBusDevice *sbdev, const BindingEntry *entry)
+{
+ return !strcmp(object_get_typename(OBJECT(sbdev)), entry->typename);
+}
+
+#define TYPE_BINDING(type, add_fn) {(type), NULL, (add_fn), NULL}
+
+/* list of supported dynamic sysbus bindings */
+static const BindingEntry bindings[] = {
+#ifdef CONFIG_LINUX
+ TYPE_BINDING(TYPE_VFIO_CALXEDA_XGMAC, add_calxeda_midway_xgmac_fdt_node),
+ TYPE_BINDING(TYPE_VFIO_AMD_XGBE, add_amd_xgbe_fdt_node),
+ VFIO_PLATFORM_BINDING("amd,xgbe-seattle-v1a", add_amd_xgbe_fdt_node),
+#endif
+#ifdef CONFIG_TPM
+ TYPE_BINDING(TYPE_TPM_TIS_SYSBUS, add_tpm_tis_fdt_node),
+#endif
+ TYPE_BINDING(TYPE_RAMFB_DEVICE, no_fdt_node),
+ TYPE_BINDING("", NULL), /* last element */
+};
+
+/* Generic Code */
+
+/**
+ * add_fdt_node - add the device tree node of a dynamic sysbus device
+ *
+ * @sbdev: handle to the sysbus device
+ * @opaque: handle to the PlatformBusFDTData
+ *
+ * Checks the sysbus type belongs to the list of device types that
+ * are dynamically instantiable and if so call the node creation
+ * function.
+ */
+static void add_fdt_node(SysBusDevice *sbdev, void *opaque)
+{
+ int i, ret;
+
+ for (i = 0; i < ARRAY_SIZE(bindings); i++) {
+ const BindingEntry *iter = &bindings[i];
+
+ if (type_match(sbdev, iter)) {
+ if (!iter->match_fn || iter->match_fn(sbdev, iter)) {
+ ret = iter->add_fn(sbdev, opaque);
+ assert(!ret);
+ return;
+ }
+ }
+ }
+ error_report("Device %s can not be dynamically instantiated",
+ qdev_fw_name(DEVICE(sbdev)));
+ exit(1);
+}
+
+void platform_bus_add_all_fdt_nodes(void *fdt, const char *intc, hwaddr addr,
+ hwaddr bus_size, int irq_start)
+{
+ const char platcomp[] = "qemu,platform\0simple-bus";
+ PlatformBusDevice *pbus;
+ DeviceState *dev;
+ gchar *node;
+
+ assert(fdt);
+
+ node = g_strdup_printf("/platform@%"PRIx64, addr);
+
+ /* Create a /platform node that we can put all devices into */
+ qemu_fdt_add_subnode(fdt, node);
+ qemu_fdt_setprop(fdt, node, "compatible", platcomp, sizeof(platcomp));
+
+ /* Our platform bus region is less than 32bits, so 1 cell is enough for
+ * address and size
+ */
+ qemu_fdt_setprop_cells(fdt, node, "#size-cells", 1);
+ qemu_fdt_setprop_cells(fdt, node, "#address-cells", 1);
+ qemu_fdt_setprop_cells(fdt, node, "ranges", 0, addr >> 32, addr, bus_size);
+
+ qemu_fdt_setprop_phandle(fdt, node, "interrupt-parent", intc);
+
+ dev = qdev_find_recursive(sysbus_get_default(), TYPE_PLATFORM_BUS_DEVICE);
+ pbus = PLATFORM_BUS_DEVICE(dev);
+
+ PlatformBusFDTData data = {
+ .fdt = fdt,
+ .irq_start = irq_start,
+ .pbus_node_name = node,
+ .pbus = pbus,
+ };
+
+ /* Loop through all dynamic sysbus devices and create their node */
+ foreach_dynamic_sysbus_device(add_fdt_node, &data);
+
+ g_free(node);
+}
+++ /dev/null
-/*
- * Dynamic sysbus device tree node generation API
- *
- * Copyright Linaro Limited, 2014
- *
- * Authors:
- * Alex Graf <agraf@suse.de>
- * Eric Auger <eric.auger@linaro.org>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2 or later, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-#ifndef HW_ARM_SYSBUS_FDT_H
-#define HW_ARM_SYSBUS_FDT_H
-
-#include "exec/hwaddr.h"
-
-/**
- * platform_bus_add_all_fdt_nodes - create all the platform bus nodes
- *
- * builds the parent platform bus node and all the nodes of dynamic
- * sysbus devices attached to it.
- */
-void platform_bus_add_all_fdt_nodes(void *fdt, const char *intc, hwaddr addr,
- hwaddr bus_size, int irq_start);
-#endif
--- /dev/null
+/*
+ * Dynamic sysbus device tree node generation API
+ *
+ * Copyright Linaro Limited, 2014
+ *
+ * Authors:
+ * Alex Graf <agraf@suse.de>
+ * Eric Auger <eric.auger@linaro.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2 or later, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef HW_ARM_SYSBUS_FDT_H
+#define HW_ARM_SYSBUS_FDT_H
+
+#include "exec/hwaddr.h"
+
+/**
+ * platform_bus_add_all_fdt_nodes - create all the platform bus nodes
+ *
+ * builds the parent platform bus node and all the nodes of dynamic
+ * sysbus devices attached to it.
+ */
+void platform_bus_add_all_fdt_nodes(void *fdt, const char *intc, hwaddr addr,
+ hwaddr bus_size, int irq_start);
+#endif
projects / qemu.git / commitdiff