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/arm/mach-omap1/dma.c | 394 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 394 insertions(+) create mode 100644 arch/arm/mach-omap1/dma.c (limited to 'arch/arm/mach-omap1/dma.c') diff --git a/arch/arm/mach-omap1/dma.c b/arch/arm/mach-omap1/dma.c new file mode 100644 index 000000000..756966cb7 --- /dev/null +++ b/arch/arm/mach-omap1/dma.c @@ -0,0 +1,394 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * OMAP1/OMAP7xx - specific DMA driver + * + * Copyright (C) 2003 - 2008 Nokia Corporation + * Author: Juha Yrjölä + * DMA channel linking for 1610 by Samuel Ortiz + * Graphics DMA and LCD DMA graphics tranformations + * by Imre Deak + * OMAP2/3 support Copyright (C) 2004-2007 Texas Instruments, Inc. + * Some functions based on earlier dma-omap.c Copyright (C) 2001 RidgeRun, Inc. + * + * Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com/ + * Converted DMA library into platform driver + * - G, Manjunath Kondaiah + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "tc.h" + +#include "soc.h" + +#define OMAP1_DMA_BASE (0xfffed800) + +static u32 enable_1510_mode; + +static const struct omap_dma_reg reg_map[] = { + [GCR] = { 0x0400, 0x00, OMAP_DMA_REG_16BIT }, + [GSCR] = { 0x0404, 0x00, OMAP_DMA_REG_16BIT }, + [GRST1] = { 0x0408, 0x00, OMAP_DMA_REG_16BIT }, + [HW_ID] = { 0x0442, 0x00, OMAP_DMA_REG_16BIT }, + [PCH2_ID] = { 0x0444, 0x00, OMAP_DMA_REG_16BIT }, + [PCH0_ID] = { 0x0446, 0x00, OMAP_DMA_REG_16BIT }, + [PCH1_ID] = { 0x0448, 0x00, OMAP_DMA_REG_16BIT }, + [PCHG_ID] = { 0x044a, 0x00, OMAP_DMA_REG_16BIT }, + [PCHD_ID] = { 0x044c, 0x00, OMAP_DMA_REG_16BIT }, + [CAPS_0] = { 0x044e, 0x00, OMAP_DMA_REG_2X16BIT }, + [CAPS_1] = { 0x0452, 0x00, OMAP_DMA_REG_2X16BIT }, + [CAPS_2] = { 0x0456, 0x00, OMAP_DMA_REG_16BIT }, + [CAPS_3] = { 0x0458, 0x00, OMAP_DMA_REG_16BIT }, + [CAPS_4] = { 0x045a, 0x00, OMAP_DMA_REG_16BIT }, + [PCH2_SR] = { 0x0460, 0x00, OMAP_DMA_REG_16BIT }, + [PCH0_SR] = { 0x0480, 0x00, OMAP_DMA_REG_16BIT }, + [PCH1_SR] = { 0x0482, 0x00, OMAP_DMA_REG_16BIT }, + [PCHD_SR] = { 0x04c0, 0x00, OMAP_DMA_REG_16BIT }, + + /* Common Registers */ + [CSDP] = { 0x0000, 0x40, OMAP_DMA_REG_16BIT }, + [CCR] = { 0x0002, 0x40, OMAP_DMA_REG_16BIT }, + [CICR] = { 0x0004, 0x40, OMAP_DMA_REG_16BIT }, + [CSR] = { 0x0006, 0x40, OMAP_DMA_REG_16BIT }, + [CEN] = { 0x0010, 0x40, OMAP_DMA_REG_16BIT }, + [CFN] = { 0x0012, 0x40, OMAP_DMA_REG_16BIT }, + [CSFI] = { 0x0014, 0x40, OMAP_DMA_REG_16BIT }, + [CSEI] = { 0x0016, 0x40, OMAP_DMA_REG_16BIT }, + [CPC] = { 0x0018, 0x40, OMAP_DMA_REG_16BIT }, /* 15xx only */ + [CSAC] = { 0x0018, 0x40, OMAP_DMA_REG_16BIT }, + [CDAC] = { 0x001a, 0x40, OMAP_DMA_REG_16BIT }, + [CDEI] = { 0x001c, 0x40, OMAP_DMA_REG_16BIT }, + [CDFI] = { 0x001e, 0x40, OMAP_DMA_REG_16BIT }, + [CLNK_CTRL] = { 0x0028, 0x40, OMAP_DMA_REG_16BIT }, + + /* Channel specific register offsets */ + [CSSA] = { 0x0008, 0x40, OMAP_DMA_REG_2X16BIT }, + [CDSA] = { 0x000c, 0x40, OMAP_DMA_REG_2X16BIT }, + [COLOR] = { 0x0020, 0x40, OMAP_DMA_REG_2X16BIT }, + [CCR2] = { 0x0024, 0x40, OMAP_DMA_REG_16BIT }, + [LCH_CTRL] = { 0x002a, 0x40, OMAP_DMA_REG_16BIT }, +}; + +static struct resource res[] __initdata = { + [0] = { + .start = OMAP1_DMA_BASE, + .end = OMAP1_DMA_BASE + SZ_2K - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .name = "0", + .start = INT_DMA_CH0_6, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .name = "1", + .start = INT_DMA_CH1_7, + .flags = IORESOURCE_IRQ, + }, + [3] = { + .name = "2", + .start = INT_DMA_CH2_8, + .flags = IORESOURCE_IRQ, + }, + [4] = { + .name = "3", + .start = INT_DMA_CH3, + .flags = IORESOURCE_IRQ, + }, + [5] = { + .name = "4", + .start = INT_DMA_CH4, + .flags = IORESOURCE_IRQ, + }, + [6] = { + .name = "5", + .start = INT_DMA_CH5, + .flags = IORESOURCE_IRQ, + }, + /* Handled in lcd_dma.c */ + [7] = { + .name = "6", + .start = INT_1610_DMA_CH6, + .flags = IORESOURCE_IRQ, + }, + /* irq's for omap16xx and omap7xx */ + [8] = { + .name = "7", + .start = INT_1610_DMA_CH7, + .flags = IORESOURCE_IRQ, + }, + [9] = { + .name = "8", + .start = INT_1610_DMA_CH8, + .flags = IORESOURCE_IRQ, + }, + [10] = { + .name = "9", + .start = INT_1610_DMA_CH9, + .flags = IORESOURCE_IRQ, + }, + [11] = { + .name = "10", + .start = INT_1610_DMA_CH10, + .flags = IORESOURCE_IRQ, + }, + [12] = { + .name = "11", + .start = INT_1610_DMA_CH11, + .flags = IORESOURCE_IRQ, + }, + [13] = { + .name = "12", + .start = INT_1610_DMA_CH12, + .flags = IORESOURCE_IRQ, + }, + [14] = { + .name = "13", + .start = INT_1610_DMA_CH13, + .flags = IORESOURCE_IRQ, + }, + [15] = { + .name = "14", + .start = INT_1610_DMA_CH14, + .flags = IORESOURCE_IRQ, + }, + [16] = { + .name = "15", + .start = INT_1610_DMA_CH15, + .flags = IORESOURCE_IRQ, + }, + [17] = { + .name = "16", + .start = INT_DMA_LCD, + .flags = IORESOURCE_IRQ, + }, +}; + +static void __iomem *dma_base; +static inline void dma_write(u32 val, int reg, int lch) +{ + void __iomem *addr = dma_base; + + addr += reg_map[reg].offset; + addr += reg_map[reg].stride * lch; + + __raw_writew(val, addr); + if (reg_map[reg].type == OMAP_DMA_REG_2X16BIT) + __raw_writew(val >> 16, addr + 2); +} + +static inline u32 dma_read(int reg, int lch) +{ + void __iomem *addr = dma_base; + uint32_t val; + + addr += reg_map[reg].offset; + addr += reg_map[reg].stride * lch; + + val = __raw_readw(addr); + if (reg_map[reg].type == OMAP_DMA_REG_2X16BIT) + val |= __raw_readw(addr + 2) << 16; + + return val; +} + +static void omap1_clear_lch_regs(int lch) +{ + int i; + + for (i = CPC; i <= COLOR; i += 1) + dma_write(0, i, lch); +} + +static void omap1_clear_dma(int lch) +{ + u32 l; + + l = dma_read(CCR, lch); + l &= ~OMAP_DMA_CCR_EN; + dma_write(l, CCR, lch); + + /* Clear pending interrupts */ + l = dma_read(CSR, lch); +} + +static void omap1_show_dma_caps(void) +{ + if (enable_1510_mode) { + printk(KERN_INFO "DMA support for OMAP15xx initialized\n"); + } else { + u16 w; + printk(KERN_INFO "OMAP DMA hardware version %d\n", + dma_read(HW_ID, 0)); + printk(KERN_INFO "DMA capabilities: %08x:%08x:%04x:%04x:%04x\n", + dma_read(CAPS_0, 0), dma_read(CAPS_1, 0), + dma_read(CAPS_2, 0), dma_read(CAPS_3, 0), + dma_read(CAPS_4, 0)); + + /* Disable OMAP 3.0/3.1 compatibility mode. */ + w = dma_read(GSCR, 0); + w |= 1 << 3; + dma_write(w, GSCR, 0); + } +} + +static unsigned configure_dma_errata(void) +{ + unsigned errata = 0; + + /* + * Erratum 3.2/3.3: sometimes 0 is returned if CSAC/CDAC is + * read before the DMA controller finished disabling the channel. + */ + if (!cpu_is_omap15xx()) + SET_DMA_ERRATA(DMA_ERRATA_3_3); + + return errata; +} + +static const struct platform_device_info omap_dma_dev_info = { + .name = "omap-dma-engine", + .id = -1, + .dma_mask = DMA_BIT_MASK(32), + .res = res, + .num_res = 1, +}; + +/* OMAP1510, OMAP1610*/ +static const struct dma_slave_map omap1xxx_sdma_map[] = { + { "omap-mcbsp.1", "tx", SDMA_FILTER_PARAM(8) }, + { "omap-mcbsp.1", "rx", SDMA_FILTER_PARAM(9) }, + { "omap-mcbsp.3", "tx", SDMA_FILTER_PARAM(10) }, + { "omap-mcbsp.3", "rx", SDMA_FILTER_PARAM(11) }, + { "omap-mcbsp.2", "tx", SDMA_FILTER_PARAM(16) }, + { "omap-mcbsp.2", "rx", SDMA_FILTER_PARAM(17) }, + { "mmci-omap.0", "tx", SDMA_FILTER_PARAM(21) }, + { "mmci-omap.0", "rx", SDMA_FILTER_PARAM(22) }, + { "omap_udc", "rx0", SDMA_FILTER_PARAM(26) }, + { "omap_udc", "rx1", SDMA_FILTER_PARAM(27) }, + { "omap_udc", "rx2", SDMA_FILTER_PARAM(28) }, + { "omap_udc", "tx0", SDMA_FILTER_PARAM(29) }, + { "omap_udc", "tx1", SDMA_FILTER_PARAM(30) }, + { "omap_udc", "tx2", SDMA_FILTER_PARAM(31) }, + { "mmci-omap.1", "tx", SDMA_FILTER_PARAM(54) }, + { "mmci-omap.1", "rx", SDMA_FILTER_PARAM(55) }, +}; + +static struct omap_system_dma_plat_info dma_plat_info __initdata = { + .reg_map = reg_map, + .channel_stride = 0x40, + .show_dma_caps = omap1_show_dma_caps, + .clear_lch_regs = omap1_clear_lch_regs, + .clear_dma = omap1_clear_dma, + .dma_write = dma_write, + .dma_read = dma_read, +}; + +static int __init omap1_system_dma_init(void) +{ + struct omap_system_dma_plat_info p; + struct omap_dma_dev_attr *d; + struct platform_device *pdev, *dma_pdev; + int ret; + + pdev = platform_device_alloc("omap_dma_system", 0); + if (!pdev) { + pr_err("%s: Unable to device alloc for dma\n", + __func__); + return -ENOMEM; + } + + dma_base = ioremap(res[0].start, resource_size(&res[0])); + if (!dma_base) { + pr_err("%s: Unable to ioremap\n", __func__); + ret = -ENODEV; + goto exit_device_put; + } + + ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res)); + if (ret) { + dev_err(&pdev->dev, "%s: Unable to add resources for %s%d\n", + __func__, pdev->name, pdev->id); + goto exit_iounmap; + } + + d = kzalloc(sizeof(*d), GFP_KERNEL); + if (!d) { + ret = -ENOMEM; + goto exit_iounmap; + } + + /* Valid attributes for omap1 plus processors */ + if (cpu_is_omap15xx()) + d->dev_caps = ENABLE_1510_MODE; + enable_1510_mode = d->dev_caps & ENABLE_1510_MODE; + + if (cpu_is_omap16xx()) + d->dev_caps = ENABLE_16XX_MODE; + + d->dev_caps |= SRC_PORT; + d->dev_caps |= DST_PORT; + d->dev_caps |= SRC_INDEX; + d->dev_caps |= DST_INDEX; + d->dev_caps |= IS_BURST_ONLY4; + d->dev_caps |= CLEAR_CSR_ON_READ; + d->dev_caps |= IS_WORD_16; + + /* available logical channels */ + if (cpu_is_omap15xx()) { + d->lch_count = 9; + } else { + if (d->dev_caps & ENABLE_1510_MODE) + d->lch_count = 9; + else + d->lch_count = 16; + } + + p = dma_plat_info; + p.dma_attr = d; + p.errata = configure_dma_errata(); + + p.slave_map = omap1xxx_sdma_map; + p.slavecnt = ARRAY_SIZE(omap1xxx_sdma_map); + + ret = platform_device_add_data(pdev, &p, sizeof(p)); + if (ret) { + dev_err(&pdev->dev, "%s: Unable to add resources for %s%d\n", + __func__, pdev->name, pdev->id); + goto exit_release_d; + } + + ret = platform_device_add(pdev); + if (ret) { + dev_err(&pdev->dev, "%s: Unable to add resources for %s%d\n", + __func__, pdev->name, pdev->id); + goto exit_release_d; + } + + dma_pdev = platform_device_register_full(&omap_dma_dev_info); + if (IS_ERR(dma_pdev)) { + ret = PTR_ERR(dma_pdev); + goto exit_release_pdev; + } + + return ret; + +exit_release_pdev: + platform_device_del(pdev); +exit_release_d: + kfree(d); +exit_iounmap: + iounmap(dma_base); +exit_device_put: + platform_device_put(pdev); + + return ret; +} +arch_initcall(omap1_system_dma_init); -- cgit v1.2.3