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/arxescsi.c | 363 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 363 insertions(+) create mode 100644 drivers/scsi/arm/arxescsi.c (limited to 'drivers/scsi/arm/arxescsi.c') diff --git a/drivers/scsi/arm/arxescsi.c b/drivers/scsi/arm/arxescsi.c new file mode 100644 index 000000000..2527b542b --- /dev/null +++ b/drivers/scsi/arm/arxescsi.c @@ -0,0 +1,363 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * linux/drivers/scsi/arm/arxescsi.c + * + * Copyright (C) 1997-2000 Russell King, Stefan Hanske + * + * This driver is based on experimentation. Hence, it may have made + * assumptions about the particular card that I have available, and + * may not be reliable! + * + * Changelog: + * 30-08-1997 RMK 0.0.0 Created, READONLY version as cumana_2.c + * 22-01-1998 RMK 0.0.1 Updated to 2.1.80 + * 15-04-1998 RMK 0.0.1 Only do PIO if FAS216 will allow it. + * 11-06-1998 SH 0.0.2 Changed to support ARXE 16-bit SCSI card + * enabled writing + * 01-01-2000 SH 0.1.0 Added *real* pseudo dma writing + * (arxescsi_pseudo_dma_write) + * 02-04-2000 RMK 0.1.1 Updated for new error handling code. + * 22-10-2000 SH Updated for new registering scheme. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include "fas216.h" + +struct arxescsi_info { + FAS216_Info info; + struct expansion_card *ec; + void __iomem *base; +}; + +#define DMADATA_OFFSET (0x200) + +#define DMASTAT_OFFSET (0x600) +#define DMASTAT_DRQ (1 << 0) + +#define CSTATUS_IRQ (1 << 0) + +#define VERSION "1.10 (23/01/2003 2.5.57)" + +/* + * Function: int arxescsi_dma_setup(host, SCpnt, direction, min_type) + * Purpose : initialises DMA/PIO + * Params : host - host + * SCpnt - command + * direction - DMA on to/off of card + * min_type - minimum DMA support that we must have for this transfer + * Returns : 0 if we should not set CMD_WITHDMA for transfer info command + */ +static fasdmatype_t +arxescsi_dma_setup(struct Scsi_Host *host, struct scsi_pointer *SCp, + fasdmadir_t direction, fasdmatype_t min_type) +{ + /* + * We don't do real DMA + */ + return fasdma_pseudo; +} + +static void arxescsi_pseudo_dma_write(unsigned char *addr, void __iomem *base) +{ + __asm__ __volatile__( + " stmdb sp!, {r0-r12}\n" + " mov r3, %0\n" + " mov r1, %1\n" + " add r2, r1, #512\n" + " mov r4, #256\n" + ".loop_1: ldmia r3!, {r6, r8, r10, r12}\n" + " mov r5, r6, lsl #16\n" + " mov r7, r8, lsl #16\n" + ".loop_2: ldrb r0, [r1, #1536]\n" + " tst r0, #1\n" + " beq .loop_2\n" + " stmia r2, {r5-r8}\n\t" + " mov r9, r10, lsl #16\n" + " mov r11, r12, lsl #16\n" + ".loop_3: ldrb r0, [r1, #1536]\n" + " tst r0, #1\n" + " beq .loop_3\n" + " stmia r2, {r9-r12}\n" + " subs r4, r4, #16\n" + " bne .loop_1\n" + " ldmia sp!, {r0-r12}\n" + : + : "r" (addr), "r" (base)); +} + +/* + * Function: int arxescsi_dma_pseudo(host, SCpnt, direction, transfer) + * Purpose : handles pseudo DMA + * Params : host - host + * SCpnt - command + * direction - DMA on to/off of card + * transfer - minimum number of bytes we expect to transfer + */ +static void +arxescsi_dma_pseudo(struct Scsi_Host *host, struct scsi_pointer *SCp, + fasdmadir_t direction, int transfer) +{ + struct arxescsi_info *info = (struct arxescsi_info *)host->hostdata; + unsigned int length, error = 0; + void __iomem *base = info->info.scsi.io_base; + unsigned char *addr; + + length = SCp->this_residual; + addr = SCp->ptr; + + if (direction == DMA_OUT) { + unsigned int word; + while (length > 256) { + if (readb(base + 0x80) & STAT_INT) { + error = 1; + break; + } + arxescsi_pseudo_dma_write(addr, base); + addr += 256; + length -= 256; + } + + if (!error) + while (length > 0) { + if (readb(base + 0x80) & STAT_INT) + break; + + if (!(readb(base + DMASTAT_OFFSET) & DMASTAT_DRQ)) + continue; + + word = *addr | *(addr + 1) << 8; + + writew(word, base + DMADATA_OFFSET); + if (length > 1) { + addr += 2; + length -= 2; + } else { + addr += 1; + length -= 1; + } + } + } + else { + if (transfer && (transfer & 255)) { + while (length >= 256) { + if (readb(base + 0x80) & STAT_INT) { + error = 1; + break; + } + + if (!(readb(base + DMASTAT_OFFSET) & DMASTAT_DRQ)) + continue; + + readsw(base + DMADATA_OFFSET, addr, 256 >> 1); + addr += 256; + length -= 256; + } + } + + if (!(error)) + while (length > 0) { + unsigned long word; + + if (readb(base + 0x80) & STAT_INT) + break; + + if (!(readb(base + DMASTAT_OFFSET) & DMASTAT_DRQ)) + continue; + + word = readw(base + DMADATA_OFFSET); + *addr++ = word; + if (--length > 0) { + *addr++ = word >> 8; + length --; + } + } + } +} + +/* + * Function: int arxescsi_dma_stop(host, SCpnt) + * Purpose : stops DMA/PIO + * Params : host - host + * SCpnt - command + */ +static void arxescsi_dma_stop(struct Scsi_Host *host, struct scsi_pointer *SCp) +{ + /* + * no DMA to stop + */ +} + +/* + * Function: const char *arxescsi_info(struct Scsi_Host * host) + * Purpose : returns a descriptive string about this interface, + * Params : host - driver host structure to return info for. + * Returns : pointer to a static buffer containing null terminated string. + */ +static const char *arxescsi_info(struct Scsi_Host *host) +{ + struct arxescsi_info *info = (struct arxescsi_info *)host->hostdata; + static char string[150]; + + sprintf(string, "%s (%s) in slot %d v%s", + host->hostt->name, info->info.scsi.type, info->ec->slot_no, + VERSION); + + return string; +} + +static int +arxescsi_show_info(struct seq_file *m, struct Scsi_Host *host) +{ + struct arxescsi_info *info; + info = (struct arxescsi_info *)host->hostdata; + + seq_printf(m, "ARXE 16-bit SCSI driver v%s\n", VERSION); + fas216_print_host(&info->info, m); + fas216_print_stats(&info->info, m); + fas216_print_devices(&info->info, m); + return 0; +} + +static struct scsi_host_template arxescsi_template = { + .show_info = arxescsi_show_info, + .name = "ARXE SCSI card", + .info = arxescsi_info, + .queuecommand = fas216_noqueue_command, + .eh_host_reset_handler = fas216_eh_host_reset, + .eh_bus_reset_handler = fas216_eh_bus_reset, + .eh_device_reset_handler = fas216_eh_device_reset, + .eh_abort_handler = fas216_eh_abort, + .cmd_size = sizeof(struct fas216_cmd_priv), + .can_queue = 0, + .this_id = 7, + .sg_tablesize = SG_ALL, + .dma_boundary = PAGE_SIZE - 1, + .proc_name = "arxescsi", +}; + +static int arxescsi_probe(struct expansion_card *ec, const struct ecard_id *id) +{ + struct Scsi_Host *host; + struct arxescsi_info *info; + void __iomem *base; + int ret; + + ret = ecard_request_resources(ec); + if (ret) + goto out; + + base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0); + if (!base) { + ret = -ENOMEM; + goto out_region; + } + + host = scsi_host_alloc(&arxescsi_template, sizeof(struct arxescsi_info)); + if (!host) { + ret = -ENOMEM; + goto out_region; + } + + info = (struct arxescsi_info *)host->hostdata; + info->ec = ec; + info->base = base; + + info->info.scsi.io_base = base + 0x2000; + info->info.scsi.irq = 0; + info->info.scsi.dma = NO_DMA; + info->info.scsi.io_shift = 5; + info->info.ifcfg.clockrate = 24; /* MHz */ + info->info.ifcfg.select_timeout = 255; + info->info.ifcfg.asyncperiod = 200; /* ns */ + info->info.ifcfg.sync_max_depth = 0; + info->info.ifcfg.cntl3 = CNTL3_FASTSCSI | CNTL3_FASTCLK; + info->info.ifcfg.disconnect_ok = 0; + info->info.ifcfg.wide_max_size = 0; + info->info.ifcfg.capabilities = FASCAP_PSEUDODMA; + info->info.dma.setup = arxescsi_dma_setup; + info->info.dma.pseudo = arxescsi_dma_pseudo; + info->info.dma.stop = arxescsi_dma_stop; + + ec->irqaddr = base; + ec->irqmask = CSTATUS_IRQ; + + ret = fas216_init(host); + if (ret) + goto out_unregister; + + ret = fas216_add(host, &ec->dev); + if (ret == 0) + goto out; + + fas216_release(host); + out_unregister: + scsi_host_put(host); + out_region: + ecard_release_resources(ec); + out: + return ret; +} + +static void arxescsi_remove(struct expansion_card *ec) +{ + struct Scsi_Host *host = ecard_get_drvdata(ec); + + ecard_set_drvdata(ec, NULL); + fas216_remove(host); + + fas216_release(host); + scsi_host_put(host); + ecard_release_resources(ec); +} + +static const struct ecard_id arxescsi_cids[] = { + { MANU_ARXE, PROD_ARXE_SCSI }, + { 0xffff, 0xffff }, +}; + +static struct ecard_driver arxescsi_driver = { + .probe = arxescsi_probe, + .remove = arxescsi_remove, + .id_table = arxescsi_cids, + .drv = { + .name = "arxescsi", + }, +}; + +static int __init init_arxe_scsi_driver(void) +{ + return ecard_register_driver(&arxescsi_driver); +} + +static void __exit exit_arxe_scsi_driver(void) +{ + ecard_remove_driver(&arxescsi_driver); +} + +module_init(init_arxe_scsi_driver); +module_exit(exit_arxe_scsi_driver); + +MODULE_AUTHOR("Stefan Hanske"); +MODULE_DESCRIPTION("ARXESCSI driver for Acorn machines"); +MODULE_LICENSE("GPL"); + -- cgit v1.2.3