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/soc/fsl/qbman/bman_ccsr.c | 320 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 320 insertions(+) create mode 100644 drivers/soc/fsl/qbman/bman_ccsr.c (limited to 'drivers/soc/fsl/qbman/bman_ccsr.c') diff --git a/drivers/soc/fsl/qbman/bman_ccsr.c b/drivers/soc/fsl/qbman/bman_ccsr.c new file mode 100644 index 000000000..cb24a08be --- /dev/null +++ b/drivers/soc/fsl/qbman/bman_ccsr.c @@ -0,0 +1,320 @@ +/* Copyright (c) 2009 - 2016 Freescale Semiconductor, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "bman_priv.h" + +u16 bman_ip_rev; +EXPORT_SYMBOL(bman_ip_rev); + +/* Register offsets */ +#define REG_FBPR_FPC 0x0800 +#define REG_ECSR 0x0a00 +#define REG_ECIR 0x0a04 +#define REG_EADR 0x0a08 +#define REG_EDATA(n) (0x0a10 + ((n) * 0x04)) +#define REG_SBEC(n) (0x0a80 + ((n) * 0x04)) +#define REG_IP_REV_1 0x0bf8 +#define REG_IP_REV_2 0x0bfc +#define REG_FBPR_BARE 0x0c00 +#define REG_FBPR_BAR 0x0c04 +#define REG_FBPR_AR 0x0c10 +#define REG_SRCIDR 0x0d04 +#define REG_LIODNR 0x0d08 +#define REG_ERR_ISR 0x0e00 +#define REG_ERR_IER 0x0e04 +#define REG_ERR_ISDR 0x0e08 + +/* Used by all error interrupt registers except 'inhibit' */ +#define BM_EIRQ_IVCI 0x00000010 /* Invalid Command Verb */ +#define BM_EIRQ_FLWI 0x00000008 /* FBPR Low Watermark */ +#define BM_EIRQ_MBEI 0x00000004 /* Multi-bit ECC Error */ +#define BM_EIRQ_SBEI 0x00000002 /* Single-bit ECC Error */ +#define BM_EIRQ_BSCN 0x00000001 /* pool State Change Notification */ + +struct bman_hwerr_txt { + u32 mask; + const char *txt; +}; + +static const struct bman_hwerr_txt bman_hwerr_txts[] = { + { BM_EIRQ_IVCI, "Invalid Command Verb" }, + { BM_EIRQ_FLWI, "FBPR Low Watermark" }, + { BM_EIRQ_MBEI, "Multi-bit ECC Error" }, + { BM_EIRQ_SBEI, "Single-bit ECC Error" }, + { BM_EIRQ_BSCN, "Pool State Change Notification" }, +}; + +/* Only trigger low water mark interrupt once only */ +#define BMAN_ERRS_TO_DISABLE BM_EIRQ_FLWI + +/* Pointer to the start of the BMan's CCSR space */ +static u32 __iomem *bm_ccsr_start; + +static inline u32 bm_ccsr_in(u32 offset) +{ + return ioread32be(bm_ccsr_start + offset/4); +} +static inline void bm_ccsr_out(u32 offset, u32 val) +{ + iowrite32be(val, bm_ccsr_start + offset/4); +} + +static void bm_get_version(u16 *id, u8 *major, u8 *minor) +{ + u32 v = bm_ccsr_in(REG_IP_REV_1); + *id = (v >> 16); + *major = (v >> 8) & 0xff; + *minor = v & 0xff; +} + +/* signal transactions for FBPRs with higher priority */ +#define FBPR_AR_RPRIO_HI BIT(30) + +/* Track if probe has occurred and if cleanup is required */ +static int __bman_probed; +static int __bman_requires_cleanup; + + +static int bm_set_memory(u64 ba, u32 size) +{ + u32 bar, bare; + u32 exp = ilog2(size); + /* choke if size isn't within range */ + DPAA_ASSERT(size >= 4096 && size <= 1024*1024*1024 && + is_power_of_2(size)); + /* choke if '[e]ba' has lower-alignment than 'size' */ + DPAA_ASSERT(!(ba & (size - 1))); + + /* Check to see if BMan has already been initialized */ + bar = bm_ccsr_in(REG_FBPR_BAR); + if (bar) { + /* Maker sure ba == what was programmed) */ + bare = bm_ccsr_in(REG_FBPR_BARE); + if (bare != upper_32_bits(ba) || bar != lower_32_bits(ba)) { + pr_err("Attempted to reinitialize BMan with different BAR, got 0x%llx read BARE=0x%x BAR=0x%x\n", + ba, bare, bar); + return -ENOMEM; + } + pr_info("BMan BAR already configured\n"); + __bman_requires_cleanup = 1; + return 1; + } + + bm_ccsr_out(REG_FBPR_BARE, upper_32_bits(ba)); + bm_ccsr_out(REG_FBPR_BAR, lower_32_bits(ba)); + bm_ccsr_out(REG_FBPR_AR, exp - 1); + return 0; +} + +/* + * Location and size of BMan private memory + * + * Ideally we would use the DMA API to turn rmem->base into a DMA address + * (especially if iommu translations ever get involved). Unfortunately, the + * DMA API currently does not allow mapping anything that is not backed with + * a struct page. + */ +static dma_addr_t fbpr_a; +static size_t fbpr_sz; + +static int bman_fbpr(struct reserved_mem *rmem) +{ + fbpr_a = rmem->base; + fbpr_sz = rmem->size; + + WARN_ON(!(fbpr_a && fbpr_sz)); + + return 0; +} +RESERVEDMEM_OF_DECLARE(bman_fbpr, "fsl,bman-fbpr", bman_fbpr); + +static irqreturn_t bman_isr(int irq, void *ptr) +{ + u32 isr_val, ier_val, ecsr_val, isr_mask, i; + struct device *dev = ptr; + + ier_val = bm_ccsr_in(REG_ERR_IER); + isr_val = bm_ccsr_in(REG_ERR_ISR); + ecsr_val = bm_ccsr_in(REG_ECSR); + isr_mask = isr_val & ier_val; + + if (!isr_mask) + return IRQ_NONE; + + for (i = 0; i < ARRAY_SIZE(bman_hwerr_txts); i++) { + if (bman_hwerr_txts[i].mask & isr_mask) { + dev_err_ratelimited(dev, "ErrInt: %s\n", + bman_hwerr_txts[i].txt); + if (bman_hwerr_txts[i].mask & ecsr_val) { + /* Re-arm error capture registers */ + bm_ccsr_out(REG_ECSR, ecsr_val); + } + if (bman_hwerr_txts[i].mask & BMAN_ERRS_TO_DISABLE) { + dev_dbg(dev, "Disabling error 0x%x\n", + bman_hwerr_txts[i].mask); + ier_val &= ~bman_hwerr_txts[i].mask; + bm_ccsr_out(REG_ERR_IER, ier_val); + } + } + } + bm_ccsr_out(REG_ERR_ISR, isr_val); + + return IRQ_HANDLED; +} + +int bman_is_probed(void) +{ + return __bman_probed; +} +EXPORT_SYMBOL_GPL(bman_is_probed); + +int bman_requires_cleanup(void) +{ + return __bman_requires_cleanup; +} + +void bman_done_cleanup(void) +{ + __bman_requires_cleanup = 0; +} + +static int fsl_bman_probe(struct platform_device *pdev) +{ + int ret, err_irq; + struct device *dev = &pdev->dev; + struct device_node *node = dev->of_node; + struct resource *res; + u16 id, bm_pool_cnt; + u8 major, minor; + + __bman_probed = -1; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(dev, "Can't get %pOF property 'IORESOURCE_MEM'\n", + node); + return -ENXIO; + } + bm_ccsr_start = devm_ioremap(dev, res->start, resource_size(res)); + if (!bm_ccsr_start) + return -ENXIO; + + bm_get_version(&id, &major, &minor); + if (major == 1 && minor == 0) { + bman_ip_rev = BMAN_REV10; + bm_pool_cnt = BM_POOL_MAX; + } else if (major == 2 && minor == 0) { + bman_ip_rev = BMAN_REV20; + bm_pool_cnt = 8; + } else if (major == 2 && minor == 1) { + bman_ip_rev = BMAN_REV21; + bm_pool_cnt = BM_POOL_MAX; + } else { + dev_err(dev, "Unknown Bman version:%04x,%02x,%02x\n", + id, major, minor); + return -ENODEV; + } + + /* + * If FBPR memory wasn't defined using the qbman compatible string + * try using the of_reserved_mem_device method + */ + if (!fbpr_a) { + ret = qbman_init_private_mem(dev, 0, &fbpr_a, &fbpr_sz); + if (ret) { + dev_err(dev, "qbman_init_private_mem() failed 0x%x\n", + ret); + return -ENODEV; + } + } + + dev_dbg(dev, "Allocated FBPR 0x%llx 0x%zx\n", fbpr_a, fbpr_sz); + + bm_set_memory(fbpr_a, fbpr_sz); + + err_irq = platform_get_irq(pdev, 0); + if (err_irq <= 0) { + dev_info(dev, "Can't get %pOF IRQ\n", node); + return -ENODEV; + } + ret = devm_request_irq(dev, err_irq, bman_isr, IRQF_SHARED, "bman-err", + dev); + if (ret) { + dev_err(dev, "devm_request_irq() failed %d for '%pOF'\n", + ret, node); + return ret; + } + /* Disable Buffer Pool State Change */ + bm_ccsr_out(REG_ERR_ISDR, BM_EIRQ_BSCN); + /* + * Write-to-clear any stale bits, (eg. starvation being asserted prior + * to resource allocation during driver init). + */ + bm_ccsr_out(REG_ERR_ISR, 0xffffffff); + /* Enable Error Interrupts */ + bm_ccsr_out(REG_ERR_IER, 0xffffffff); + + bm_bpalloc = devm_gen_pool_create(dev, 0, -1, "bman-bpalloc"); + if (IS_ERR(bm_bpalloc)) { + ret = PTR_ERR(bm_bpalloc); + dev_err(dev, "bman-bpalloc pool init failed (%d)\n", ret); + return ret; + } + + /* seed BMan resource pool */ + ret = gen_pool_add(bm_bpalloc, DPAA_GENALLOC_OFF, bm_pool_cnt, -1); + if (ret) { + dev_err(dev, "Failed to seed BPID range [%d..%d] (%d)\n", + 0, bm_pool_cnt - 1, ret); + return ret; + } + + __bman_probed = 1; + + return 0; +}; + +static const struct of_device_id fsl_bman_ids[] = { + { + .compatible = "fsl,bman", + }, + {} +}; + +static struct platform_driver fsl_bman_driver = { + .driver = { + .name = KBUILD_MODNAME, + .of_match_table = fsl_bman_ids, + .suppress_bind_attrs = true, + }, + .probe = fsl_bman_probe, +}; + +builtin_platform_driver(fsl_bman_driver); -- cgit v1.2.3