summaryrefslogtreecommitdiffstats
path: root/qemu/hw/arm/sysbus-fdt.c
diff options
context:
space:
mode:
authorRajithaY <rajithax.yerrumsetty@intel.com>2017-04-25 03:31:15 -0700
committerRajitha Yerrumchetty <rajithax.yerrumsetty@intel.com>2017-05-22 06:48:08 +0000
commitbb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch)
treeca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/hw/arm/sysbus-fdt.c
parenta14b48d18a9ed03ec191cf16b162206998a895ce (diff)
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/hw/arm/sysbus-fdt.c')
-rw-r--r--qemu/hw/arm/sysbus-fdt.c542
1 files changed, 0 insertions, 542 deletions
diff --git a/qemu/hw/arm/sysbus-fdt.c b/qemu/hw/arm/sysbus-fdt.c
deleted file mode 100644
index 5debb3348..000000000
--- a/qemu/hw/arm/sysbus-fdt.c
+++ /dev/null
@@ -1,542 +0,0 @@
-/*
- * 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>
-#include "qemu-common.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 "hw/platform-bus.h"
-#include "sysemu/sysemu.h"
-#include "hw/vfio/vfio-platform.h"
-#include "hw/vfio/vfio-calxeda-xgmac.h"
-#include "hw/vfio/vfio-amd-xgbe.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 used when calling the machine init done notifier
- * that constructs the fdt nodes of platform bus devices
- */
-typedef struct PlatformBusFDTNotifierParams {
- Notifier notifier;
- ARMPlatformBusFDTParams *fdt_params;
-} PlatformBusFDTNotifierParams;
-
-/* struct that associates a device type name and a node creation function */
-typedef struct NodeCreationPair {
- const char *typename;
- int (*add_fdt_node_fn)(SysBusDevice *sbdev, void *opaque);
-} NodeCreationPair;
-
-/* 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,
- props[i].optional ? &err : &error_fatal);
- if (r) {
- qemu_fdt_setprop(guest_fdt, nodename,
- props[i].name, r, prop_len);
- } else {
- if (prop_len != -FDT_ERR_NOTFOUND) {
- /* optional property not returned although property exists */
- error_report_err(err);
- } else {
- error_free(err);
- }
- }
- }
-}
-
-/* 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_setg(&error_fatal,
- "not able to locate clock handle %d in host device tree",
- host_phandle);
- }
- 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_setg(&error_fatal,
- "not able to retrieve node path for clock handle %d",
- host_phandle);
- }
-
- r = qemu_fdt_getprop(host_fdt, node_path, "compatible", &prop_len,
- &error_fatal);
- if (strcmp(r, "fixed-clock")) {
- error_setg(&error_fatal,
- "clock handle %d is not a fixed clock", host_phandle);
- }
-
- 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_setg(&error_fatal, "%s incorrect sysfs device name %s",
- __func__, vbasedev->name);
- }
- node_path = qemu_fdt_node_path(host_fdt, dt_name, vdev->compat,
- &error_fatal);
- if (!node_path || !node_path[0]) {
- error_setg(&error_fatal, "%s unable to retrieve node path for %s/%s",
- __func__, dt_name, vdev->compat);
- }
-
- if (node_path[1]) {
- error_setg(&error_fatal, "%s more than one node matching %s/%s!",
- __func__, dt_name, vdev->compat);
- }
-
- g_free(dt_name);
-
- if (vbasedev->num_regions != 5) {
- error_setg(&error_fatal, "%s Does the host dt node combine XGBE/PHY?",
- __func__);
- }
-
- /* 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_setg(&error_fatal, "%s clocks property should contain 2 handles",
- __func__);
- }
- 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;
-}
-
-#endif /* CONFIG_LINUX */
-
-/* list of supported dynamic sysbus devices */
-static const NodeCreationPair add_fdt_node_functions[] = {
-#ifdef CONFIG_LINUX
- {TYPE_VFIO_CALXEDA_XGMAC, add_calxeda_midway_xgmac_fdt_node},
- {TYPE_VFIO_AMD_XGBE, add_amd_xgbe_fdt_node},
-#endif
- {"", 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 int add_fdt_node(SysBusDevice *sbdev, void *opaque)
-{
- int i, ret;
-
- for (i = 0; i < ARRAY_SIZE(add_fdt_node_functions); i++) {
- if (!strcmp(object_get_typename(OBJECT(sbdev)),
- add_fdt_node_functions[i].typename)) {
- ret = add_fdt_node_functions[i].add_fdt_node_fn(sbdev, opaque);
- assert(!ret);
- return 0;
- }
- }
- error_report("Device %s can not be dynamically instantiated",
- qdev_fw_name(DEVICE(sbdev)));
- exit(1);
-}
-
-/**
- * add_all_platform_bus_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.
- */
-static void add_all_platform_bus_fdt_nodes(ARMPlatformBusFDTParams *fdt_params)
-{
- const char platcomp[] = "qemu,platform\0simple-bus";
- PlatformBusDevice *pbus;
- DeviceState *dev;
- gchar *node;
- uint64_t addr, size;
- int irq_start, dtb_size;
- struct arm_boot_info *info = fdt_params->binfo;
- const ARMPlatformBusSystemParams *params = fdt_params->system_params;
- const char *intc = fdt_params->intc;
- void *fdt = info->get_dtb(info, &dtb_size);
-
- /*
- * If the user provided a dtb, we assume the dynamic sysbus nodes
- * already are integrated there. This corresponds to a use case where
- * the dynamic sysbus nodes are complex and their generation is not yet
- * supported. In that case the user can take charge of the guest dt
- * while qemu takes charge of the qom stuff.
- */
- if (info->dtb_filename) {
- return;
- }
-
- assert(fdt);
-
- node = g_strdup_printf("/platform@%"PRIx64, params->platform_bus_base);
- addr = params->platform_bus_base;
- size = params->platform_bus_size;
- irq_start = params->platform_bus_first_irq;
-
- /* 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, 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);
-
- /* We can only create dt nodes for dynamic devices when they're ready */
- assert(pbus->done_gathering);
-
- 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);
-}
-
-static void platform_bus_fdt_notify(Notifier *notifier, void *data)
-{
- PlatformBusFDTNotifierParams *p = DO_UPCAST(PlatformBusFDTNotifierParams,
- notifier, notifier);
-
- add_all_platform_bus_fdt_nodes(p->fdt_params);
- g_free(p->fdt_params);
- g_free(p);
-}
-
-void arm_register_platform_bus_fdt_creator(ARMPlatformBusFDTParams *fdt_params)
-{
- PlatformBusFDTNotifierParams *p = g_new(PlatformBusFDTNotifierParams, 1);
-
- p->fdt_params = fdt_params;
- p->notifier.notify = platform_bus_fdt_notify;
- qemu_add_machine_init_done_notifier(&p->notifier);
-}