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/sparc/kernel/ioport.c | 344 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 344 insertions(+) create mode 100644 arch/sparc/kernel/ioport.c (limited to 'arch/sparc/kernel/ioport.c') diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c new file mode 100644 index 000000000..4e4f3d326 --- /dev/null +++ b/arch/sparc/kernel/ioport.c @@ -0,0 +1,344 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ioport.c: Simple io mapping allocator. + * + * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) + * Copyright (C) 1995 Miguel de Icaza (miguel@nuclecu.unam.mx) + * + * 1996: sparc_free_io, 1999: ioremap()/iounmap() by Pete Zaitcev. + * + * 2000/01/29 + * zait: as long as pci_alloc_consistent produces something addressable, + * things are ok. + * rth: no, it is relevant, because get_free_pages returns you a + * pointer into the big page mapping + * zait: so what? + * zait: remap_it_my_way(virt_to_phys(get_free_page())) + * Hmm + * Suppose I did this remap_it_my_way(virt_to_phys(get_free_page())). + * So far so good. + * Now, driver calls pci_free_consistent(with result of + * remap_it_my_way()). + * How do you find the address to pass to free_pages()? + * zait: walk the page tables? It's only two or three level after all. + * zait: you have to walk them anyway to remove the mapping. + * Hmm + * Sounds reasonable + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include /* struct pci_dev */ +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static void __iomem *_sparc_ioremap(struct resource *res, u32 bus, u32 pa, int sz); +static void __iomem *_sparc_alloc_io(unsigned int busno, unsigned long phys, + unsigned long size, char *name); +static void _sparc_free_io(struct resource *res); + +static void register_proc_sparc_ioport(void); + +/* This points to the next to use virtual memory for DVMA mappings */ +static struct resource _sparc_dvma = { + .name = "sparc_dvma", .start = DVMA_VADDR, .end = DVMA_END - 1 +}; +/* This points to the start of I/O mappings, cluable from outside. */ +/*ext*/ struct resource sparc_iomap = { + .name = "sparc_iomap", .start = IOBASE_VADDR, .end = IOBASE_END - 1 +}; + +/* + * Our mini-allocator... + * Boy this is gross! We need it because we must map I/O for + * timers and interrupt controller before the kmalloc is available. + */ + +#define XNMLN 15 +#define XNRES 10 /* SS-10 uses 8 */ + +struct xresource { + struct resource xres; /* Must be first */ + int xflag; /* 1 == used */ + char xname[XNMLN+1]; +}; + +static struct xresource xresv[XNRES]; + +static struct xresource *xres_alloc(void) { + struct xresource *xrp; + int n; + + xrp = xresv; + for (n = 0; n < XNRES; n++) { + if (xrp->xflag == 0) { + xrp->xflag = 1; + return xrp; + } + xrp++; + } + return NULL; +} + +static void xres_free(struct xresource *xrp) { + xrp->xflag = 0; +} + +/* + * These are typically used in PCI drivers + * which are trying to be cross-platform. + * + * Bus type is always zero on IIep. + */ +void __iomem *ioremap(phys_addr_t offset, size_t size) +{ + char name[14]; + + sprintf(name, "phys_%08x", (u32)offset); + return _sparc_alloc_io(0, (unsigned long)offset, size, name); +} +EXPORT_SYMBOL(ioremap); + +/* + * Complementary to ioremap(). + */ +void iounmap(volatile void __iomem *virtual) +{ + unsigned long vaddr = (unsigned long) virtual & PAGE_MASK; + struct resource *res; + + /* + * XXX Too slow. Can have 8192 DVMA pages on sun4m in the worst case. + * This probably warrants some sort of hashing. + */ + if ((res = lookup_resource(&sparc_iomap, vaddr)) == NULL) { + printk("free_io/iounmap: cannot free %lx\n", vaddr); + return; + } + _sparc_free_io(res); + + if ((char *)res >= (char*)xresv && (char *)res < (char *)&xresv[XNRES]) { + xres_free((struct xresource *)res); + } else { + kfree(res); + } +} +EXPORT_SYMBOL(iounmap); + +void __iomem *of_ioremap(struct resource *res, unsigned long offset, + unsigned long size, char *name) +{ + return _sparc_alloc_io(res->flags & 0xF, + res->start + offset, + size, name); +} +EXPORT_SYMBOL(of_ioremap); + +void of_iounmap(struct resource *res, void __iomem *base, unsigned long size) +{ + iounmap(base); +} +EXPORT_SYMBOL(of_iounmap); + +/* + * Meat of mapping + */ +static void __iomem *_sparc_alloc_io(unsigned int busno, unsigned long phys, + unsigned long size, char *name) +{ + static int printed_full; + struct xresource *xres; + struct resource *res; + char *tack; + int tlen; + void __iomem *va; /* P3 diag */ + + if (name == NULL) name = "???"; + + if ((xres = xres_alloc()) != NULL) { + tack = xres->xname; + res = &xres->xres; + } else { + if (!printed_full) { + printk("ioremap: done with statics, switching to malloc\n"); + printed_full = 1; + } + tlen = strlen(name); + tack = kmalloc(sizeof (struct resource) + tlen + 1, GFP_KERNEL); + if (tack == NULL) return NULL; + memset(tack, 0, sizeof(struct resource)); + res = (struct resource *) tack; + tack += sizeof (struct resource); + } + + strlcpy(tack, name, XNMLN+1); + res->name = tack; + + va = _sparc_ioremap(res, busno, phys, size); + /* printk("ioremap(0x%x:%08lx[0x%lx])=%p\n", busno, phys, size, va); */ /* P3 diag */ + return va; +} + +/* + */ +static void __iomem * +_sparc_ioremap(struct resource *res, u32 bus, u32 pa, int sz) +{ + unsigned long offset = ((unsigned long) pa) & (~PAGE_MASK); + + if (allocate_resource(&sparc_iomap, res, + (offset + sz + PAGE_SIZE-1) & PAGE_MASK, + sparc_iomap.start, sparc_iomap.end, PAGE_SIZE, NULL, NULL) != 0) { + /* Usually we cannot see printks in this case. */ + prom_printf("alloc_io_res(%s): cannot occupy\n", + (res->name != NULL)? res->name: "???"); + prom_halt(); + } + + pa &= PAGE_MASK; + srmmu_mapiorange(bus, pa, res->start, resource_size(res)); + + return (void __iomem *)(unsigned long)(res->start + offset); +} + +/* + * Complementary to _sparc_ioremap(). + */ +static void _sparc_free_io(struct resource *res) +{ + unsigned long plen; + + plen = resource_size(res); + BUG_ON((plen & (PAGE_SIZE-1)) != 0); + srmmu_unmapiorange(res->start, plen); + release_resource(res); +} + +unsigned long sparc_dma_alloc_resource(struct device *dev, size_t len) +{ + struct resource *res; + + res = kzalloc(sizeof(*res), GFP_KERNEL); + if (!res) + return 0; + res->name = dev->of_node->full_name; + + if (allocate_resource(&_sparc_dvma, res, len, _sparc_dvma.start, + _sparc_dvma.end, PAGE_SIZE, NULL, NULL) != 0) { + printk("%s: cannot occupy 0x%zx", __func__, len); + kfree(res); + return 0; + } + + return res->start; +} + +bool sparc_dma_free_resource(void *cpu_addr, size_t size) +{ + unsigned long addr = (unsigned long)cpu_addr; + struct resource *res; + + res = lookup_resource(&_sparc_dvma, addr); + if (!res) { + printk("%s: cannot free %p\n", __func__, cpu_addr); + return false; + } + + if ((addr & (PAGE_SIZE - 1)) != 0) { + printk("%s: unaligned va %p\n", __func__, cpu_addr); + return false; + } + + size = PAGE_ALIGN(size); + if (resource_size(res) != size) { + printk("%s: region 0x%lx asked 0x%zx\n", + __func__, (long)resource_size(res), size); + return false; + } + + release_resource(res); + kfree(res); + return true; +} + +#ifdef CONFIG_SBUS + +void sbus_set_sbus64(struct device *dev, int x) +{ + printk("sbus_set_sbus64: unsupported\n"); +} +EXPORT_SYMBOL(sbus_set_sbus64); + +static int __init sparc_register_ioport(void) +{ + register_proc_sparc_ioport(); + + return 0; +} + +arch_initcall(sparc_register_ioport); + +#endif /* CONFIG_SBUS */ + +/* + * IIep is write-through, not flushing on cpu to device transfer. + * + * On LEON systems without cache snooping, the entire D-CACHE must be flushed to + * make DMA to cacheable memory coherent. + */ +void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size, + enum dma_data_direction dir) +{ + if (dir != DMA_TO_DEVICE && + sparc_cpu_model == sparc_leon && + !sparc_leon3_snooping_enabled()) + leon_flush_dcache_all(); +} + +#ifdef CONFIG_PROC_FS + +static int sparc_io_proc_show(struct seq_file *m, void *v) +{ + struct resource *root = m->private, *r; + const char *nm; + + for (r = root->child; r != NULL; r = r->sibling) { + if ((nm = r->name) == NULL) nm = "???"; + seq_printf(m, "%016llx-%016llx: %s\n", + (unsigned long long)r->start, + (unsigned long long)r->end, nm); + } + + return 0; +} +#endif /* CONFIG_PROC_FS */ + +static void register_proc_sparc_ioport(void) +{ +#ifdef CONFIG_PROC_FS + proc_create_single_data("io_map", 0, NULL, sparc_io_proc_show, + &sparc_iomap); + proc_create_single_data("dvma_map", 0, NULL, sparc_io_proc_show, + &_sparc_dvma); +#endif +} -- cgit v1.2.3