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(). ... --- drivers/mtd/spi-nor/debugfs.c | 249 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 249 insertions(+) create mode 100644 drivers/mtd/spi-nor/debugfs.c (limited to 'drivers/mtd/spi-nor/debugfs.c') diff --git a/drivers/mtd/spi-nor/debugfs.c b/drivers/mtd/spi-nor/debugfs.c new file mode 100644 index 000000000..ff895f675 --- /dev/null +++ b/drivers/mtd/spi-nor/debugfs.c @@ -0,0 +1,249 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include +#include + +#include "core.h" + +#define SPI_NOR_DEBUGFS_ROOT "spi-nor" + +#define SNOR_F_NAME(name) [ilog2(SNOR_F_##name)] = #name +static const char *const snor_f_names[] = { + SNOR_F_NAME(HAS_SR_TB), + SNOR_F_NAME(NO_OP_CHIP_ERASE), + SNOR_F_NAME(BROKEN_RESET), + SNOR_F_NAME(4B_OPCODES), + SNOR_F_NAME(HAS_4BAIT), + SNOR_F_NAME(HAS_LOCK), + SNOR_F_NAME(HAS_16BIT_SR), + SNOR_F_NAME(NO_READ_CR), + SNOR_F_NAME(HAS_SR_TB_BIT6), + SNOR_F_NAME(HAS_4BIT_BP), + SNOR_F_NAME(HAS_SR_BP3_BIT6), + SNOR_F_NAME(IO_MODE_EN_VOLATILE), + SNOR_F_NAME(SOFT_RESET), + SNOR_F_NAME(SWP_IS_VOLATILE), +}; +#undef SNOR_F_NAME + +static const char *spi_nor_protocol_name(enum spi_nor_protocol proto) +{ + switch (proto) { + case SNOR_PROTO_1_1_1: return "1S-1S-1S"; + case SNOR_PROTO_1_1_2: return "1S-1S-2S"; + case SNOR_PROTO_1_1_4: return "1S-1S-4S"; + case SNOR_PROTO_1_1_8: return "1S-1S-8S"; + case SNOR_PROTO_1_2_2: return "1S-2S-2S"; + case SNOR_PROTO_1_4_4: return "1S-4S-4S"; + case SNOR_PROTO_1_8_8: return "1S-8S-8S"; + case SNOR_PROTO_2_2_2: return "2S-2S-2S"; + case SNOR_PROTO_4_4_4: return "4S-4S-4S"; + case SNOR_PROTO_8_8_8: return "8S-8S-8S"; + case SNOR_PROTO_1_1_1_DTR: return "1D-1D-1D"; + case SNOR_PROTO_1_2_2_DTR: return "1D-2D-2D"; + case SNOR_PROTO_1_4_4_DTR: return "1D-4D-4D"; + case SNOR_PROTO_1_8_8_DTR: return "1D-8D-8D"; + case SNOR_PROTO_8_8_8_DTR: return "8D-8D-8D"; + } + + return ""; +} + +static void spi_nor_print_flags(struct seq_file *s, unsigned long flags, + const char *const *names, int names_len) +{ + bool sep = false; + int i; + + for (i = 0; i < sizeof(flags) * BITS_PER_BYTE; i++) { + if (!(flags & BIT(i))) + continue; + if (sep) + seq_puts(s, " | "); + sep = true; + if (i < names_len && names[i]) + seq_puts(s, names[i]); + else + seq_printf(s, "1<<%d", i); + } +} + +static int spi_nor_params_show(struct seq_file *s, void *data) +{ + struct spi_nor *nor = s->private; + struct spi_nor_flash_parameter *params = nor->params; + struct spi_nor_erase_map *erase_map = ¶ms->erase_map; + struct spi_nor_erase_region *region; + const struct flash_info *info = nor->info; + char buf[16], *str; + int i; + + seq_printf(s, "name\t\t%s\n", info->name); + seq_printf(s, "id\t\t%*ph\n", SPI_NOR_MAX_ID_LEN, nor->id); + string_get_size(params->size, 1, STRING_UNITS_2, buf, sizeof(buf)); + seq_printf(s, "size\t\t%s\n", buf); + seq_printf(s, "write size\t%u\n", params->writesize); + seq_printf(s, "page size\t%u\n", params->page_size); + seq_printf(s, "address nbytes\t%u\n", nor->addr_nbytes); + + seq_puts(s, "flags\t\t"); + spi_nor_print_flags(s, nor->flags, snor_f_names, sizeof(snor_f_names)); + seq_puts(s, "\n"); + + seq_puts(s, "\nopcodes\n"); + seq_printf(s, " read\t\t0x%02x\n", nor->read_opcode); + seq_printf(s, " dummy cycles\t%u\n", nor->read_dummy); + seq_printf(s, " erase\t\t0x%02x\n", nor->erase_opcode); + seq_printf(s, " program\t0x%02x\n", nor->program_opcode); + + switch (nor->cmd_ext_type) { + case SPI_NOR_EXT_NONE: + str = "none"; + break; + case SPI_NOR_EXT_REPEAT: + str = "repeat"; + break; + case SPI_NOR_EXT_INVERT: + str = "invert"; + break; + default: + str = ""; + break; + } + seq_printf(s, " 8D extension\t%s\n", str); + + seq_puts(s, "\nprotocols\n"); + seq_printf(s, " read\t\t%s\n", + spi_nor_protocol_name(nor->read_proto)); + seq_printf(s, " write\t\t%s\n", + spi_nor_protocol_name(nor->write_proto)); + seq_printf(s, " register\t%s\n", + spi_nor_protocol_name(nor->reg_proto)); + + seq_puts(s, "\nerase commands\n"); + for (i = 0; i < SNOR_ERASE_TYPE_MAX; i++) { + struct spi_nor_erase_type *et = &erase_map->erase_type[i]; + + if (et->size) { + string_get_size(et->size, 1, STRING_UNITS_2, buf, + sizeof(buf)); + seq_printf(s, " %02x (%s) [%d]\n", et->opcode, buf, i); + } + } + + if (!(nor->flags & SNOR_F_NO_OP_CHIP_ERASE)) { + string_get_size(params->size, 1, STRING_UNITS_2, buf, sizeof(buf)); + seq_printf(s, " %02x (%s)\n", SPINOR_OP_CHIP_ERASE, buf); + } + + seq_puts(s, "\nsector map\n"); + seq_puts(s, " region (in hex) | erase mask | flags\n"); + seq_puts(s, " ------------------+------------+----------\n"); + for (region = erase_map->regions; + region; + region = spi_nor_region_next(region)) { + u64 start = region->offset & ~SNOR_ERASE_FLAGS_MASK; + u64 flags = region->offset & SNOR_ERASE_FLAGS_MASK; + u64 end = start + region->size - 1; + + seq_printf(s, " %08llx-%08llx | [%c%c%c%c] | %s\n", + start, end, + flags & BIT(0) ? '0' : ' ', + flags & BIT(1) ? '1' : ' ', + flags & BIT(2) ? '2' : ' ', + flags & BIT(3) ? '3' : ' ', + flags & SNOR_OVERLAID_REGION ? "overlaid" : ""); + } + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(spi_nor_params); + +static void spi_nor_print_read_cmd(struct seq_file *s, u32 cap, + struct spi_nor_read_command *cmd) +{ + seq_printf(s, " %s%s\n", spi_nor_protocol_name(cmd->proto), + cap == SNOR_HWCAPS_READ_FAST ? " (fast read)" : ""); + seq_printf(s, " opcode\t0x%02x\n", cmd->opcode); + seq_printf(s, " mode cycles\t%u\n", cmd->num_mode_clocks); + seq_printf(s, " dummy cycles\t%u\n", cmd->num_wait_states); +} + +static void spi_nor_print_pp_cmd(struct seq_file *s, + struct spi_nor_pp_command *cmd) +{ + seq_printf(s, " %s\n", spi_nor_protocol_name(cmd->proto)); + seq_printf(s, " opcode\t0x%02x\n", cmd->opcode); +} + +static int spi_nor_capabilities_show(struct seq_file *s, void *data) +{ + struct spi_nor *nor = s->private; + struct spi_nor_flash_parameter *params = nor->params; + u32 hwcaps = params->hwcaps.mask; + int i, cmd; + + seq_puts(s, "Supported read modes by the flash\n"); + for (i = 0; i < sizeof(hwcaps) * BITS_PER_BYTE; i++) { + if (!(hwcaps & BIT(i))) + continue; + + cmd = spi_nor_hwcaps_read2cmd(BIT(i)); + if (cmd < 0) + continue; + + spi_nor_print_read_cmd(s, BIT(i), ¶ms->reads[cmd]); + hwcaps &= ~BIT(i); + } + + seq_puts(s, "\nSupported page program modes by the flash\n"); + for (i = 0; i < sizeof(hwcaps) * BITS_PER_BYTE; i++) { + if (!(hwcaps & BIT(i))) + continue; + + cmd = spi_nor_hwcaps_pp2cmd(BIT(i)); + if (cmd < 0) + continue; + + spi_nor_print_pp_cmd(s, ¶ms->page_programs[cmd]); + hwcaps &= ~BIT(i); + } + + if (hwcaps) + seq_printf(s, "\nunknown hwcaps 0x%x\n", hwcaps); + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(spi_nor_capabilities); + +static void spi_nor_debugfs_unregister(void *data) +{ + struct spi_nor *nor = data; + + debugfs_remove(nor->debugfs_root); + nor->debugfs_root = NULL; +} + +void spi_nor_debugfs_register(struct spi_nor *nor) +{ + struct dentry *rootdir, *d; + int ret; + + /* Create rootdir once. Will never be deleted again. */ + rootdir = debugfs_lookup(SPI_NOR_DEBUGFS_ROOT, NULL); + if (!rootdir) + rootdir = debugfs_create_dir(SPI_NOR_DEBUGFS_ROOT, NULL); + + ret = devm_add_action(nor->dev, spi_nor_debugfs_unregister, nor); + if (ret) + return; + + d = debugfs_create_dir(dev_name(nor->dev), rootdir); + nor->debugfs_root = d; + + debugfs_create_file("params", 0444, d, nor, &spi_nor_params_fops); + debugfs_create_file("capabilities", 0444, d, nor, + &spi_nor_capabilities_fops); +} -- cgit v1.2.3