From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- arch/powerpc/mm/drmem.c | 516 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 516 insertions(+) create mode 100644 arch/powerpc/mm/drmem.c (limited to 'arch/powerpc/mm/drmem.c') diff --git a/arch/powerpc/mm/drmem.c b/arch/powerpc/mm/drmem.c new file mode 100644 index 000000000..2369d1bf2 --- /dev/null +++ b/arch/powerpc/mm/drmem.c @@ -0,0 +1,516 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Dynamic reconfiguration memory support + * + * Copyright 2017 IBM Corporation + */ + +#define pr_fmt(fmt) "drmem: " fmt + +#include +#include +#include +#include +#include +#include + +static int n_root_addr_cells, n_root_size_cells; + +static struct drmem_lmb_info __drmem_info; +struct drmem_lmb_info *drmem_info = &__drmem_info; +static bool in_drmem_update; + +u64 drmem_lmb_memory_max(void) +{ + struct drmem_lmb *last_lmb; + + last_lmb = &drmem_info->lmbs[drmem_info->n_lmbs - 1]; + return last_lmb->base_addr + drmem_lmb_size(); +} + +static u32 drmem_lmb_flags(struct drmem_lmb *lmb) +{ + /* + * Return the value of the lmb flags field minus the reserved + * bit used internally for hotplug processing. + */ + return lmb->flags & ~DRMEM_LMB_RESERVED; +} + +static struct property *clone_property(struct property *prop, u32 prop_sz) +{ + struct property *new_prop; + + new_prop = kzalloc(sizeof(*new_prop), GFP_KERNEL); + if (!new_prop) + return NULL; + + new_prop->name = kstrdup(prop->name, GFP_KERNEL); + new_prop->value = kzalloc(prop_sz, GFP_KERNEL); + if (!new_prop->name || !new_prop->value) { + kfree(new_prop->name); + kfree(new_prop->value); + kfree(new_prop); + return NULL; + } + + new_prop->length = prop_sz; +#if defined(CONFIG_OF_DYNAMIC) + of_property_set_flag(new_prop, OF_DYNAMIC); +#endif + return new_prop; +} + +static int drmem_update_dt_v1(struct device_node *memory, + struct property *prop) +{ + struct property *new_prop; + struct of_drconf_cell_v1 *dr_cell; + struct drmem_lmb *lmb; + u32 *p; + + new_prop = clone_property(prop, prop->length); + if (!new_prop) + return -1; + + p = new_prop->value; + *p++ = cpu_to_be32(drmem_info->n_lmbs); + + dr_cell = (struct of_drconf_cell_v1 *)p; + + for_each_drmem_lmb(lmb) { + dr_cell->base_addr = cpu_to_be64(lmb->base_addr); + dr_cell->drc_index = cpu_to_be32(lmb->drc_index); + dr_cell->aa_index = cpu_to_be32(lmb->aa_index); + dr_cell->flags = cpu_to_be32(drmem_lmb_flags(lmb)); + + dr_cell++; + } + + of_update_property(memory, new_prop); + return 0; +} + +static void init_drconf_v2_cell(struct of_drconf_cell_v2 *dr_cell, + struct drmem_lmb *lmb) +{ + dr_cell->base_addr = cpu_to_be64(lmb->base_addr); + dr_cell->drc_index = cpu_to_be32(lmb->drc_index); + dr_cell->aa_index = cpu_to_be32(lmb->aa_index); + dr_cell->flags = cpu_to_be32(drmem_lmb_flags(lmb)); +} + +static int drmem_update_dt_v2(struct device_node *memory, + struct property *prop) +{ + struct property *new_prop; + struct of_drconf_cell_v2 *dr_cell; + struct drmem_lmb *lmb, *prev_lmb; + u32 lmb_sets, prop_sz, seq_lmbs; + u32 *p; + + /* First pass, determine how many LMB sets are needed. */ + lmb_sets = 0; + prev_lmb = NULL; + for_each_drmem_lmb(lmb) { + if (!prev_lmb) { + prev_lmb = lmb; + lmb_sets++; + continue; + } + + if (prev_lmb->aa_index != lmb->aa_index || + drmem_lmb_flags(prev_lmb) != drmem_lmb_flags(lmb)) + lmb_sets++; + + prev_lmb = lmb; + } + + prop_sz = lmb_sets * sizeof(*dr_cell) + sizeof(__be32); + new_prop = clone_property(prop, prop_sz); + if (!new_prop) + return -1; + + p = new_prop->value; + *p++ = cpu_to_be32(lmb_sets); + + dr_cell = (struct of_drconf_cell_v2 *)p; + + /* Second pass, populate the LMB set data */ + prev_lmb = NULL; + seq_lmbs = 0; + for_each_drmem_lmb(lmb) { + if (prev_lmb == NULL) { + /* Start of first LMB set */ + prev_lmb = lmb; + init_drconf_v2_cell(dr_cell, lmb); + seq_lmbs++; + continue; + } + + if (prev_lmb->aa_index != lmb->aa_index || + drmem_lmb_flags(prev_lmb) != drmem_lmb_flags(lmb)) { + /* end of one set, start of another */ + dr_cell->seq_lmbs = cpu_to_be32(seq_lmbs); + dr_cell++; + + init_drconf_v2_cell(dr_cell, lmb); + seq_lmbs = 1; + } else { + seq_lmbs++; + } + + prev_lmb = lmb; + } + + /* close out last LMB set */ + dr_cell->seq_lmbs = cpu_to_be32(seq_lmbs); + of_update_property(memory, new_prop); + return 0; +} + +int drmem_update_dt(void) +{ + struct device_node *memory; + struct property *prop; + int rc = -1; + + memory = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory"); + if (!memory) + return -1; + + /* + * Set in_drmem_update to prevent the notifier callback to process the + * DT property back since the change is coming from the LMB tree. + */ + in_drmem_update = true; + prop = of_find_property(memory, "ibm,dynamic-memory", NULL); + if (prop) { + rc = drmem_update_dt_v1(memory, prop); + } else { + prop = of_find_property(memory, "ibm,dynamic-memory-v2", NULL); + if (prop) + rc = drmem_update_dt_v2(memory, prop); + } + in_drmem_update = false; + + of_node_put(memory); + return rc; +} + +static void read_drconf_v1_cell(struct drmem_lmb *lmb, + const __be32 **prop) +{ + const __be32 *p = *prop; + + lmb->base_addr = of_read_number(p, n_root_addr_cells); + p += n_root_addr_cells; + lmb->drc_index = of_read_number(p++, 1); + + p++; /* skip reserved field */ + + lmb->aa_index = of_read_number(p++, 1); + lmb->flags = of_read_number(p++, 1); + + *prop = p; +} + +static int +__walk_drmem_v1_lmbs(const __be32 *prop, const __be32 *usm, void *data, + int (*func)(struct drmem_lmb *, const __be32 **, void *)) +{ + struct drmem_lmb lmb; + u32 i, n_lmbs; + int ret = 0; + + n_lmbs = of_read_number(prop++, 1); + for (i = 0; i < n_lmbs; i++) { + read_drconf_v1_cell(&lmb, &prop); + ret = func(&lmb, &usm, data); + if (ret) + break; + } + + return ret; +} + +static void read_drconf_v2_cell(struct of_drconf_cell_v2 *dr_cell, + const __be32 **prop) +{ + const __be32 *p = *prop; + + dr_cell->seq_lmbs = of_read_number(p++, 1); + dr_cell->base_addr = of_read_number(p, n_root_addr_cells); + p += n_root_addr_cells; + dr_cell->drc_index = of_read_number(p++, 1); + dr_cell->aa_index = of_read_number(p++, 1); + dr_cell->flags = of_read_number(p++, 1); + + *prop = p; +} + +static int +__walk_drmem_v2_lmbs(const __be32 *prop, const __be32 *usm, void *data, + int (*func)(struct drmem_lmb *, const __be32 **, void *)) +{ + struct of_drconf_cell_v2 dr_cell; + struct drmem_lmb lmb; + u32 i, j, lmb_sets; + int ret = 0; + + lmb_sets = of_read_number(prop++, 1); + for (i = 0; i < lmb_sets; i++) { + read_drconf_v2_cell(&dr_cell, &prop); + + for (j = 0; j < dr_cell.seq_lmbs; j++) { + lmb.base_addr = dr_cell.base_addr; + dr_cell.base_addr += drmem_lmb_size(); + + lmb.drc_index = dr_cell.drc_index; + dr_cell.drc_index++; + + lmb.aa_index = dr_cell.aa_index; + lmb.flags = dr_cell.flags; + + ret = func(&lmb, &usm, data); + if (ret) + break; + } + } + + return ret; +} + +#ifdef CONFIG_PPC_PSERIES +int __init walk_drmem_lmbs_early(unsigned long node, void *data, + int (*func)(struct drmem_lmb *, const __be32 **, void *)) +{ + const __be32 *prop, *usm; + int len, ret = -ENODEV; + + prop = of_get_flat_dt_prop(node, "ibm,lmb-size", &len); + if (!prop || len < dt_root_size_cells * sizeof(__be32)) + return ret; + + /* Get the address & size cells */ + n_root_addr_cells = dt_root_addr_cells; + n_root_size_cells = dt_root_size_cells; + + drmem_info->lmb_size = dt_mem_next_cell(dt_root_size_cells, &prop); + + usm = of_get_flat_dt_prop(node, "linux,drconf-usable-memory", &len); + + prop = of_get_flat_dt_prop(node, "ibm,dynamic-memory", &len); + if (prop) { + ret = __walk_drmem_v1_lmbs(prop, usm, data, func); + } else { + prop = of_get_flat_dt_prop(node, "ibm,dynamic-memory-v2", + &len); + if (prop) + ret = __walk_drmem_v2_lmbs(prop, usm, data, func); + } + + memblock_dump_all(); + return ret; +} + +/* + * Update the LMB associativity index. + */ +static int update_lmb(struct drmem_lmb *updated_lmb, + __maybe_unused const __be32 **usm, + __maybe_unused void *data) +{ + struct drmem_lmb *lmb; + + for_each_drmem_lmb(lmb) { + if (lmb->drc_index != updated_lmb->drc_index) + continue; + + lmb->aa_index = updated_lmb->aa_index; + break; + } + return 0; +} + +/* + * Update the LMB associativity index. + * + * This needs to be called when the hypervisor is updating the + * dynamic-reconfiguration-memory node property. + */ +void drmem_update_lmbs(struct property *prop) +{ + /* + * Don't update the LMBs if triggered by the update done in + * drmem_update_dt(), the LMB values have been used to the update the DT + * property in that case. + */ + if (in_drmem_update) + return; + if (!strcmp(prop->name, "ibm,dynamic-memory")) + __walk_drmem_v1_lmbs(prop->value, NULL, NULL, update_lmb); + else if (!strcmp(prop->name, "ibm,dynamic-memory-v2")) + __walk_drmem_v2_lmbs(prop->value, NULL, NULL, update_lmb); +} +#endif + +static int init_drmem_lmb_size(struct device_node *dn) +{ + const __be32 *prop; + int len; + + if (drmem_info->lmb_size) + return 0; + + prop = of_get_property(dn, "ibm,lmb-size", &len); + if (!prop || len < n_root_size_cells * sizeof(__be32)) { + pr_info("Could not determine LMB size\n"); + return -1; + } + + drmem_info->lmb_size = of_read_number(prop, n_root_size_cells); + return 0; +} + +/* + * Returns the property linux,drconf-usable-memory if + * it exists (the property exists only in kexec/kdump kernels, + * added by kexec-tools) + */ +static const __be32 *of_get_usable_memory(struct device_node *dn) +{ + const __be32 *prop; + u32 len; + + prop = of_get_property(dn, "linux,drconf-usable-memory", &len); + if (!prop || len < sizeof(unsigned int)) + return NULL; + + return prop; +} + +int walk_drmem_lmbs(struct device_node *dn, void *data, + int (*func)(struct drmem_lmb *, const __be32 **, void *)) +{ + const __be32 *prop, *usm; + int ret = -ENODEV; + + if (!of_root) + return ret; + + /* Get the address & size cells */ + of_node_get(of_root); + n_root_addr_cells = of_n_addr_cells(of_root); + n_root_size_cells = of_n_size_cells(of_root); + of_node_put(of_root); + + if (init_drmem_lmb_size(dn)) + return ret; + + usm = of_get_usable_memory(dn); + + prop = of_get_property(dn, "ibm,dynamic-memory", NULL); + if (prop) { + ret = __walk_drmem_v1_lmbs(prop, usm, data, func); + } else { + prop = of_get_property(dn, "ibm,dynamic-memory-v2", NULL); + if (prop) + ret = __walk_drmem_v2_lmbs(prop, usm, data, func); + } + + return ret; +} + +static void __init init_drmem_v1_lmbs(const __be32 *prop) +{ + struct drmem_lmb *lmb; + + drmem_info->n_lmbs = of_read_number(prop++, 1); + if (drmem_info->n_lmbs == 0) + return; + + drmem_info->lmbs = kcalloc(drmem_info->n_lmbs, sizeof(*lmb), + GFP_KERNEL); + if (!drmem_info->lmbs) + return; + + for_each_drmem_lmb(lmb) + read_drconf_v1_cell(lmb, &prop); +} + +static void __init init_drmem_v2_lmbs(const __be32 *prop) +{ + struct drmem_lmb *lmb; + struct of_drconf_cell_v2 dr_cell; + const __be32 *p; + u32 i, j, lmb_sets; + int lmb_index; + + lmb_sets = of_read_number(prop++, 1); + if (lmb_sets == 0) + return; + + /* first pass, calculate the number of LMBs */ + p = prop; + for (i = 0; i < lmb_sets; i++) { + read_drconf_v2_cell(&dr_cell, &p); + drmem_info->n_lmbs += dr_cell.seq_lmbs; + } + + drmem_info->lmbs = kcalloc(drmem_info->n_lmbs, sizeof(*lmb), + GFP_KERNEL); + if (!drmem_info->lmbs) + return; + + /* second pass, read in the LMB information */ + lmb_index = 0; + p = prop; + + for (i = 0; i < lmb_sets; i++) { + read_drconf_v2_cell(&dr_cell, &p); + + for (j = 0; j < dr_cell.seq_lmbs; j++) { + lmb = &drmem_info->lmbs[lmb_index++]; + + lmb->base_addr = dr_cell.base_addr; + dr_cell.base_addr += drmem_info->lmb_size; + + lmb->drc_index = dr_cell.drc_index; + dr_cell.drc_index++; + + lmb->aa_index = dr_cell.aa_index; + lmb->flags = dr_cell.flags; + } + } +} + +static int __init drmem_init(void) +{ + struct device_node *dn; + const __be32 *prop; + + dn = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory"); + if (!dn) { + pr_info("No dynamic reconfiguration memory found\n"); + return 0; + } + + if (init_drmem_lmb_size(dn)) { + of_node_put(dn); + return 0; + } + + prop = of_get_property(dn, "ibm,dynamic-memory", NULL); + if (prop) { + init_drmem_v1_lmbs(prop); + } else { + prop = of_get_property(dn, "ibm,dynamic-memory-v2", NULL); + if (prop) + init_drmem_v2_lmbs(prop); + } + + of_node_put(dn); + return 0; +} +late_initcall(drmem_init); -- cgit v1.2.3