#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/vfio/vfio-region.h"
#include "hw/display/ramfb.h"
#include "hw/uefi/var-service-api.h"
#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 */
/**
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;
- const uint32_t *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 = 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
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),
projects / thirdparty / qemu.git / commitdiff
