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/scsi/arm/oak.c | 213 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 213 insertions(+) create mode 100644 drivers/scsi/arm/oak.c (limited to 'drivers/scsi/arm/oak.c') diff --git a/drivers/scsi/arm/oak.c b/drivers/scsi/arm/oak.c new file mode 100644 index 000000000..f18a0620c --- /dev/null +++ b/drivers/scsi/arm/oak.c @@ -0,0 +1,213 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Oak Generic NCR5380 driver + * + * Copyright 1995-2002, Russell King + */ + +#include +#include +#include +#include + +#include +#include + +#include + +#define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata) + +#define NCR5380_read(reg) readb(hostdata->io + ((reg) << 2)) +#define NCR5380_write(reg, value) writeb(value, hostdata->io + ((reg) << 2)) + +#define NCR5380_dma_xfer_len NCR5380_dma_xfer_none +#define NCR5380_dma_recv_setup oakscsi_pread +#define NCR5380_dma_send_setup oakscsi_pwrite +#define NCR5380_dma_residual NCR5380_dma_residual_none + +#define NCR5380_queue_command oakscsi_queue_command +#define NCR5380_info oakscsi_info + +#define NCR5380_implementation_fields /* none */ + +#include "../NCR5380.h" + +#undef START_DMA_INITIATOR_RECEIVE_REG +#define START_DMA_INITIATOR_RECEIVE_REG (128 + 7) + +#define STAT ((128 + 16) << 2) +#define DATA ((128 + 8) << 2) + +static inline int oakscsi_pwrite(struct NCR5380_hostdata *hostdata, + unsigned char *addr, int len) +{ + u8 __iomem *base = hostdata->io; + +printk("writing %p len %d\n",addr, len); + + while(1) + { + int status; + while (((status = readw(base + STAT)) & 0x100)==0); + } + return 0; +} + +static inline int oakscsi_pread(struct NCR5380_hostdata *hostdata, + unsigned char *addr, int len) +{ + u8 __iomem *base = hostdata->io; + +printk("reading %p len %d\n", addr, len); + while(len > 0) + { + unsigned int status, timeout; + unsigned long b; + + timeout = 0x01FFFFFF; + + while (((status = readw(base + STAT)) & 0x100)==0) + { + timeout--; + if(status & 0x200 || !timeout) + { + printk("status = %08X\n", status); + return -1; + } + } + + if(len >= 128) + { + readsw(base + DATA, addr, 128); + addr += 128; + len -= 128; + } + else + { + b = (unsigned long) readw(base + DATA); + *addr ++ = b; + len -= 1; + if(len) + *addr ++ = b>>8; + len -= 1; + } + } + return 0; +} + +#undef STAT +#undef DATA + +#include "../NCR5380.c" + +static struct scsi_host_template oakscsi_template = { + .module = THIS_MODULE, + .name = "Oak 16-bit SCSI", + .info = oakscsi_info, + .queuecommand = oakscsi_queue_command, + .eh_abort_handler = NCR5380_abort, + .eh_host_reset_handler = NCR5380_host_reset, + .can_queue = 16, + .this_id = 7, + .sg_tablesize = SG_ALL, + .cmd_per_lun = 2, + .dma_boundary = PAGE_SIZE - 1, + .proc_name = "oakscsi", + .cmd_size = sizeof(struct NCR5380_cmd), + .max_sectors = 128, +}; + +static int oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id) +{ + struct Scsi_Host *host; + int ret; + + ret = ecard_request_resources(ec); + if (ret) + goto out; + + host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata)); + if (!host) { + ret = -ENOMEM; + goto release; + } + + priv(host)->io = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC), + ecard_resource_len(ec, ECARD_RES_MEMC)); + if (!priv(host)->io) { + ret = -ENOMEM; + goto unreg; + } + + host->irq = NO_IRQ; + + ret = NCR5380_init(host, FLAG_DMA_FIXUP | FLAG_LATE_DMA_SETUP); + if (ret) + goto out_unmap; + + NCR5380_maybe_reset_bus(host); + + ret = scsi_add_host(host, &ec->dev); + if (ret) + goto out_exit; + + scsi_scan_host(host); + goto out; + + out_exit: + NCR5380_exit(host); + out_unmap: + iounmap(priv(host)->io); + unreg: + scsi_host_put(host); + release: + ecard_release_resources(ec); + out: + return ret; +} + +static void oakscsi_remove(struct expansion_card *ec) +{ + struct Scsi_Host *host = ecard_get_drvdata(ec); + void __iomem *base = priv(host)->io; + + ecard_set_drvdata(ec, NULL); + scsi_remove_host(host); + + NCR5380_exit(host); + scsi_host_put(host); + iounmap(base); + ecard_release_resources(ec); +} + +static const struct ecard_id oakscsi_cids[] = { + { MANU_OAK, PROD_OAK_SCSI }, + { 0xffff, 0xffff } +}; + +static struct ecard_driver oakscsi_driver = { + .probe = oakscsi_probe, + .remove = oakscsi_remove, + .id_table = oakscsi_cids, + .drv = { + .name = "oakscsi", + }, +}; + +static int __init oakscsi_init(void) +{ + return ecard_register_driver(&oakscsi_driver); +} + +static void __exit oakscsi_exit(void) +{ + ecard_remove_driver(&oakscsi_driver); +} + +module_init(oakscsi_init); +module_exit(oakscsi_exit); + +MODULE_AUTHOR("Russell King"); +MODULE_DESCRIPTION("Oak SCSI driver"); +MODULE_LICENSE("GPL"); + -- cgit v1.2.3