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/mfd/ioc3.c | 673 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 673 insertions(+) create mode 100644 drivers/mfd/ioc3.c (limited to 'drivers/mfd/ioc3.c') diff --git a/drivers/mfd/ioc3.c b/drivers/mfd/ioc3.c new file mode 100644 index 000000000..58656837b --- /dev/null +++ b/drivers/mfd/ioc3.c @@ -0,0 +1,673 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * SGI IOC3 multifunction device driver + * + * Copyright (C) 2018, 2019 Thomas Bogendoerfer + * + * Based on work by: + * Stanislaw Skowronek + * Joshua Kinard + * Brent Casavant - IOC4 master driver + * Pat Gefre - IOC3 serial port IRQ demuxer + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#define IOC3_IRQ_SERIAL_A 6 +#define IOC3_IRQ_SERIAL_B 15 +#define IOC3_IRQ_KBD 22 + +/* Bitmask for selecting which IRQs are level triggered */ +#define IOC3_LVL_MASK (BIT(IOC3_IRQ_SERIAL_A) | BIT(IOC3_IRQ_SERIAL_B)) + +#define M48T35_REG_SIZE 32768 /* size of m48t35 registers */ + +/* 1.2 us latency timer (40 cycles at 33 MHz) */ +#define IOC3_LATENCY 40 + +struct ioc3_priv_data { + struct irq_domain *domain; + struct ioc3 __iomem *regs; + struct pci_dev *pdev; + int domain_irq; +}; + +static void ioc3_irq_ack(struct irq_data *d) +{ + struct ioc3_priv_data *ipd = irq_data_get_irq_chip_data(d); + unsigned int hwirq = irqd_to_hwirq(d); + + writel(BIT(hwirq), &ipd->regs->sio_ir); +} + +static void ioc3_irq_mask(struct irq_data *d) +{ + struct ioc3_priv_data *ipd = irq_data_get_irq_chip_data(d); + unsigned int hwirq = irqd_to_hwirq(d); + + writel(BIT(hwirq), &ipd->regs->sio_iec); +} + +static void ioc3_irq_unmask(struct irq_data *d) +{ + struct ioc3_priv_data *ipd = irq_data_get_irq_chip_data(d); + unsigned int hwirq = irqd_to_hwirq(d); + + writel(BIT(hwirq), &ipd->regs->sio_ies); +} + +static struct irq_chip ioc3_irq_chip = { + .name = "IOC3", + .irq_ack = ioc3_irq_ack, + .irq_mask = ioc3_irq_mask, + .irq_unmask = ioc3_irq_unmask, +}; + +static int ioc3_irq_domain_map(struct irq_domain *d, unsigned int irq, + irq_hw_number_t hwirq) +{ + /* Set level IRQs for every interrupt contained in IOC3_LVL_MASK */ + if (BIT(hwirq) & IOC3_LVL_MASK) + irq_set_chip_and_handler(irq, &ioc3_irq_chip, handle_level_irq); + else + irq_set_chip_and_handler(irq, &ioc3_irq_chip, handle_edge_irq); + + irq_set_chip_data(irq, d->host_data); + return 0; +} + +static void ioc3_irq_domain_unmap(struct irq_domain *d, unsigned int irq) +{ + irq_set_chip_and_handler(irq, NULL, NULL); + irq_set_chip_data(irq, NULL); +} + +static const struct irq_domain_ops ioc3_irq_domain_ops = { + .map = ioc3_irq_domain_map, + .unmap = ioc3_irq_domain_unmap, +}; + +static void ioc3_irq_handler(struct irq_desc *desc) +{ + struct irq_domain *domain = irq_desc_get_handler_data(desc); + struct ioc3_priv_data *ipd = domain->host_data; + struct ioc3 __iomem *regs = ipd->regs; + u32 pending, mask; + + pending = readl(®s->sio_ir); + mask = readl(®s->sio_ies); + pending &= mask; /* Mask off not enabled interrupts */ + + if (pending) + generic_handle_domain_irq(domain, __ffs(pending)); + else + spurious_interrupt(); +} + +/* + * System boards/BaseIOs use more interrupt pins of the bridge ASIC + * to which the IOC3 is connected. Since the IOC3 MFD driver + * knows wiring of these extra pins, we use the map_irq function + * to get interrupts activated + */ +static int ioc3_map_irq(struct pci_dev *pdev, int slot, int pin) +{ + struct pci_host_bridge *hbrg = pci_find_host_bridge(pdev->bus); + + return hbrg->map_irq(pdev, slot, pin); +} + +static int ioc3_irq_domain_setup(struct ioc3_priv_data *ipd, int irq) +{ + struct irq_domain *domain; + struct fwnode_handle *fn; + + fn = irq_domain_alloc_named_fwnode("IOC3"); + if (!fn) + goto err; + + domain = irq_domain_create_linear(fn, 24, &ioc3_irq_domain_ops, ipd); + if (!domain) { + irq_domain_free_fwnode(fn); + goto err; + } + + ipd->domain = domain; + + irq_set_chained_handler_and_data(irq, ioc3_irq_handler, domain); + ipd->domain_irq = irq; + return 0; + +err: + dev_err(&ipd->pdev->dev, "irq domain setup failed\n"); + return -ENOMEM; +} + +static const struct resource ioc3_uarta_resources[] = { + DEFINE_RES_MEM(offsetof(struct ioc3, sregs.uarta), + sizeof_field(struct ioc3, sregs.uarta)), + DEFINE_RES_IRQ(IOC3_IRQ_SERIAL_A) +}; + +static const struct resource ioc3_uartb_resources[] = { + DEFINE_RES_MEM(offsetof(struct ioc3, sregs.uartb), + sizeof_field(struct ioc3, sregs.uartb)), + DEFINE_RES_IRQ(IOC3_IRQ_SERIAL_B) +}; + +static struct mfd_cell ioc3_serial_cells[] = { + { + .name = "ioc3-serial8250", + .resources = ioc3_uarta_resources, + .num_resources = ARRAY_SIZE(ioc3_uarta_resources), + }, + { + .name = "ioc3-serial8250", + .resources = ioc3_uartb_resources, + .num_resources = ARRAY_SIZE(ioc3_uartb_resources), + } +}; + +static int ioc3_serial_setup(struct ioc3_priv_data *ipd) +{ + int ret; + + /* Set gpio pins for RS232/RS422 mode selection */ + writel(GPCR_UARTA_MODESEL | GPCR_UARTB_MODESEL, + &ipd->regs->gpcr_s); + /* Select RS232 mode for uart a */ + writel(0, &ipd->regs->gppr[6]); + /* Select RS232 mode for uart b */ + writel(0, &ipd->regs->gppr[7]); + + /* Switch both ports to 16650 mode */ + writel(readl(&ipd->regs->port_a.sscr) & ~SSCR_DMA_EN, + &ipd->regs->port_a.sscr); + writel(readl(&ipd->regs->port_b.sscr) & ~SSCR_DMA_EN, + &ipd->regs->port_b.sscr); + udelay(1000); /* Wait until mode switch is done */ + + ret = mfd_add_devices(&ipd->pdev->dev, PLATFORM_DEVID_AUTO, + ioc3_serial_cells, ARRAY_SIZE(ioc3_serial_cells), + &ipd->pdev->resource[0], 0, ipd->domain); + if (ret) { + dev_err(&ipd->pdev->dev, "Failed to add 16550 subdevs\n"); + return ret; + } + + return 0; +} + +static const struct resource ioc3_kbd_resources[] = { + DEFINE_RES_MEM(offsetof(struct ioc3, serio), + sizeof_field(struct ioc3, serio)), + DEFINE_RES_IRQ(IOC3_IRQ_KBD) +}; + +static struct mfd_cell ioc3_kbd_cells[] = { + { + .name = "ioc3-kbd", + .resources = ioc3_kbd_resources, + .num_resources = ARRAY_SIZE(ioc3_kbd_resources), + } +}; + +static int ioc3_kbd_setup(struct ioc3_priv_data *ipd) +{ + int ret; + + ret = mfd_add_devices(&ipd->pdev->dev, PLATFORM_DEVID_AUTO, + ioc3_kbd_cells, ARRAY_SIZE(ioc3_kbd_cells), + &ipd->pdev->resource[0], 0, ipd->domain); + if (ret) { + dev_err(&ipd->pdev->dev, "Failed to add 16550 subdevs\n"); + return ret; + } + + return 0; +} + +static const struct resource ioc3_eth_resources[] = { + DEFINE_RES_MEM(offsetof(struct ioc3, eth), + sizeof_field(struct ioc3, eth)), + DEFINE_RES_MEM(offsetof(struct ioc3, ssram), + sizeof_field(struct ioc3, ssram)), + DEFINE_RES_IRQ(0) +}; + +static const struct resource ioc3_w1_resources[] = { + DEFINE_RES_MEM(offsetof(struct ioc3, mcr), + sizeof_field(struct ioc3, mcr)), +}; +static struct sgi_w1_platform_data ioc3_w1_platform_data; + +static struct mfd_cell ioc3_eth_cells[] = { + { + .name = "ioc3-eth", + .resources = ioc3_eth_resources, + .num_resources = ARRAY_SIZE(ioc3_eth_resources), + }, + { + .name = "sgi_w1", + .resources = ioc3_w1_resources, + .num_resources = ARRAY_SIZE(ioc3_w1_resources), + .platform_data = &ioc3_w1_platform_data, + .pdata_size = sizeof(ioc3_w1_platform_data), + } +}; + +static int ioc3_eth_setup(struct ioc3_priv_data *ipd) +{ + int ret; + + /* Enable One-Wire bus */ + writel(GPCR_MLAN_EN, &ipd->regs->gpcr_s); + + /* Generate unique identifier */ + snprintf(ioc3_w1_platform_data.dev_id, + sizeof(ioc3_w1_platform_data.dev_id), "ioc3-%012llx", + ipd->pdev->resource->start); + + ret = mfd_add_devices(&ipd->pdev->dev, PLATFORM_DEVID_AUTO, + ioc3_eth_cells, ARRAY_SIZE(ioc3_eth_cells), + &ipd->pdev->resource[0], ipd->pdev->irq, NULL); + if (ret) { + dev_err(&ipd->pdev->dev, "Failed to add ETH/W1 subdev\n"); + return ret; + } + + return 0; +} + +static const struct resource ioc3_m48t35_resources[] = { + DEFINE_RES_MEM(IOC3_BYTEBUS_DEV0, M48T35_REG_SIZE) +}; + +static struct mfd_cell ioc3_m48t35_cells[] = { + { + .name = "rtc-m48t35", + .resources = ioc3_m48t35_resources, + .num_resources = ARRAY_SIZE(ioc3_m48t35_resources), + } +}; + +static int ioc3_m48t35_setup(struct ioc3_priv_data *ipd) +{ + int ret; + + ret = mfd_add_devices(&ipd->pdev->dev, PLATFORM_DEVID_AUTO, + ioc3_m48t35_cells, ARRAY_SIZE(ioc3_m48t35_cells), + &ipd->pdev->resource[0], 0, ipd->domain); + if (ret) + dev_err(&ipd->pdev->dev, "Failed to add M48T35 subdev\n"); + + return ret; +} + +static struct ds1685_rtc_platform_data ip30_rtc_platform_data = { + .bcd_mode = false, + .no_irq = false, + .uie_unsupported = true, + .access_type = ds1685_reg_indirect, +}; + +static const struct resource ioc3_rtc_ds1685_resources[] = { + DEFINE_RES_MEM(IOC3_BYTEBUS_DEV1, 1), + DEFINE_RES_MEM(IOC3_BYTEBUS_DEV2, 1), + DEFINE_RES_IRQ(0) +}; + +static struct mfd_cell ioc3_ds1685_cells[] = { + { + .name = "rtc-ds1685", + .resources = ioc3_rtc_ds1685_resources, + .num_resources = ARRAY_SIZE(ioc3_rtc_ds1685_resources), + .platform_data = &ip30_rtc_platform_data, + .pdata_size = sizeof(ip30_rtc_platform_data), + .id = PLATFORM_DEVID_NONE, + } +}; + +static int ioc3_ds1685_setup(struct ioc3_priv_data *ipd) +{ + int ret, irq; + + irq = ioc3_map_irq(ipd->pdev, 6, 0); + + ret = mfd_add_devices(&ipd->pdev->dev, 0, ioc3_ds1685_cells, + ARRAY_SIZE(ioc3_ds1685_cells), + &ipd->pdev->resource[0], irq, NULL); + if (ret) + dev_err(&ipd->pdev->dev, "Failed to add DS1685 subdev\n"); + + return ret; +}; + + +static const struct resource ioc3_leds_resources[] = { + DEFINE_RES_MEM(offsetof(struct ioc3, gppr[0]), + sizeof_field(struct ioc3, gppr[0])), + DEFINE_RES_MEM(offsetof(struct ioc3, gppr[1]), + sizeof_field(struct ioc3, gppr[1])), +}; + +static struct mfd_cell ioc3_led_cells[] = { + { + .name = "ip30-leds", + .resources = ioc3_leds_resources, + .num_resources = ARRAY_SIZE(ioc3_leds_resources), + .id = PLATFORM_DEVID_NONE, + } +}; + +static int ioc3_led_setup(struct ioc3_priv_data *ipd) +{ + int ret; + + ret = mfd_add_devices(&ipd->pdev->dev, 0, ioc3_led_cells, + ARRAY_SIZE(ioc3_led_cells), + &ipd->pdev->resource[0], 0, ipd->domain); + if (ret) + dev_err(&ipd->pdev->dev, "Failed to add LED subdev\n"); + + return ret; +} + +static int ip27_baseio_setup(struct ioc3_priv_data *ipd) +{ + int ret, io_irq; + + io_irq = ioc3_map_irq(ipd->pdev, PCI_SLOT(ipd->pdev->devfn), + PCI_INTERRUPT_INTB); + ret = ioc3_irq_domain_setup(ipd, io_irq); + if (ret) + return ret; + + ret = ioc3_eth_setup(ipd); + if (ret) + return ret; + + ret = ioc3_serial_setup(ipd); + if (ret) + return ret; + + return ioc3_m48t35_setup(ipd); +} + +static int ip27_baseio6g_setup(struct ioc3_priv_data *ipd) +{ + int ret, io_irq; + + io_irq = ioc3_map_irq(ipd->pdev, PCI_SLOT(ipd->pdev->devfn), + PCI_INTERRUPT_INTB); + ret = ioc3_irq_domain_setup(ipd, io_irq); + if (ret) + return ret; + + ret = ioc3_eth_setup(ipd); + if (ret) + return ret; + + ret = ioc3_serial_setup(ipd); + if (ret) + return ret; + + ret = ioc3_m48t35_setup(ipd); + if (ret) + return ret; + + return ioc3_kbd_setup(ipd); +} + +static int ip27_mio_setup(struct ioc3_priv_data *ipd) +{ + int ret; + + ret = ioc3_irq_domain_setup(ipd, ipd->pdev->irq); + if (ret) + return ret; + + ret = ioc3_serial_setup(ipd); + if (ret) + return ret; + + return ioc3_kbd_setup(ipd); +} + +static int ip30_sysboard_setup(struct ioc3_priv_data *ipd) +{ + int ret, io_irq; + + io_irq = ioc3_map_irq(ipd->pdev, PCI_SLOT(ipd->pdev->devfn), + PCI_INTERRUPT_INTB); + ret = ioc3_irq_domain_setup(ipd, io_irq); + if (ret) + return ret; + + ret = ioc3_eth_setup(ipd); + if (ret) + return ret; + + ret = ioc3_serial_setup(ipd); + if (ret) + return ret; + + ret = ioc3_kbd_setup(ipd); + if (ret) + return ret; + + ret = ioc3_ds1685_setup(ipd); + if (ret) + return ret; + + return ioc3_led_setup(ipd); +} + +static int ioc3_menet_setup(struct ioc3_priv_data *ipd) +{ + int ret, io_irq; + + io_irq = ioc3_map_irq(ipd->pdev, PCI_SLOT(ipd->pdev->devfn), + PCI_INTERRUPT_INTB); + ret = ioc3_irq_domain_setup(ipd, io_irq); + if (ret) + return ret; + + ret = ioc3_eth_setup(ipd); + if (ret) + return ret; + + return ioc3_serial_setup(ipd); +} + +static int ioc3_menet4_setup(struct ioc3_priv_data *ipd) +{ + return ioc3_eth_setup(ipd); +} + +static int ioc3_cad_duo_setup(struct ioc3_priv_data *ipd) +{ + int ret, io_irq; + + io_irq = ioc3_map_irq(ipd->pdev, PCI_SLOT(ipd->pdev->devfn), + PCI_INTERRUPT_INTB); + ret = ioc3_irq_domain_setup(ipd, io_irq); + if (ret) + return ret; + + ret = ioc3_eth_setup(ipd); + if (ret) + return ret; + + return ioc3_kbd_setup(ipd); +} + +/* Helper macro for filling ioc3_info array */ +#define IOC3_SID(_name, _sid, _setup) \ + { \ + .name = _name, \ + .sid = PCI_VENDOR_ID_SGI | (IOC3_SUBSYS_ ## _sid << 16), \ + .setup = _setup, \ + } + +static struct { + const char *name; + u32 sid; + int (*setup)(struct ioc3_priv_data *ipd); +} ioc3_infos[] = { + IOC3_SID("IP27 BaseIO6G", IP27_BASEIO6G, &ip27_baseio6g_setup), + IOC3_SID("IP27 MIO", IP27_MIO, &ip27_mio_setup), + IOC3_SID("IP27 BaseIO", IP27_BASEIO, &ip27_baseio_setup), + IOC3_SID("IP29 System Board", IP29_SYSBOARD, &ip27_baseio6g_setup), + IOC3_SID("IP30 System Board", IP30_SYSBOARD, &ip30_sysboard_setup), + IOC3_SID("MENET", MENET, &ioc3_menet_setup), + IOC3_SID("MENET4", MENET4, &ioc3_menet4_setup) +}; +#undef IOC3_SID + +static int ioc3_setup(struct ioc3_priv_data *ipd) +{ + u32 sid; + int i; + + /* Clear IRQs */ + writel(~0, &ipd->regs->sio_iec); + writel(~0, &ipd->regs->sio_ir); + writel(0, &ipd->regs->eth.eier); + writel(~0, &ipd->regs->eth.eisr); + + /* Read subsystem vendor id and subsystem id */ + pci_read_config_dword(ipd->pdev, PCI_SUBSYSTEM_VENDOR_ID, &sid); + + for (i = 0; i < ARRAY_SIZE(ioc3_infos); i++) + if (sid == ioc3_infos[i].sid) { + pr_info("ioc3: %s\n", ioc3_infos[i].name); + return ioc3_infos[i].setup(ipd); + } + + /* Treat everything not identified by PCI subid as CAD DUO */ + pr_info("ioc3: CAD DUO\n"); + return ioc3_cad_duo_setup(ipd); +} + +static int ioc3_mfd_probe(struct pci_dev *pdev, + const struct pci_device_id *pci_id) +{ + struct ioc3_priv_data *ipd; + struct ioc3 __iomem *regs; + int ret; + + ret = pci_enable_device(pdev); + if (ret) + return ret; + + pci_write_config_byte(pdev, PCI_LATENCY_TIMER, IOC3_LATENCY); + pci_set_master(pdev); + + ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (ret) { + pr_err("%s: No usable DMA configuration, aborting.\n", + pci_name(pdev)); + goto out_disable_device; + } + + /* Set up per-IOC3 data */ + ipd = devm_kzalloc(&pdev->dev, sizeof(struct ioc3_priv_data), + GFP_KERNEL); + if (!ipd) { + ret = -ENOMEM; + goto out_disable_device; + } + ipd->pdev = pdev; + + /* + * Map all IOC3 registers. These are shared between subdevices + * so the main IOC3 module manages them. + */ + regs = pci_ioremap_bar(pdev, 0); + if (!regs) { + dev_warn(&pdev->dev, "ioc3: Unable to remap PCI BAR for %s.\n", + pci_name(pdev)); + ret = -ENOMEM; + goto out_disable_device; + } + ipd->regs = regs; + + /* Track PCI-device specific data */ + pci_set_drvdata(pdev, ipd); + + ret = ioc3_setup(ipd); + if (ret) { + /* Remove all already added MFD devices */ + mfd_remove_devices(&ipd->pdev->dev); + if (ipd->domain) { + struct fwnode_handle *fn = ipd->domain->fwnode; + + irq_domain_remove(ipd->domain); + irq_domain_free_fwnode(fn); + free_irq(ipd->domain_irq, (void *)ipd); + } + pci_iounmap(pdev, regs); + goto out_disable_device; + } + + return 0; + +out_disable_device: + pci_disable_device(pdev); + return ret; +} + +static void ioc3_mfd_remove(struct pci_dev *pdev) +{ + struct ioc3_priv_data *ipd; + + ipd = pci_get_drvdata(pdev); + + /* Clear and disable all IRQs */ + writel(~0, &ipd->regs->sio_iec); + writel(~0, &ipd->regs->sio_ir); + + /* Release resources */ + mfd_remove_devices(&ipd->pdev->dev); + if (ipd->domain) { + struct fwnode_handle *fn = ipd->domain->fwnode; + + irq_domain_remove(ipd->domain); + irq_domain_free_fwnode(fn); + free_irq(ipd->domain_irq, (void *)ipd); + } + pci_iounmap(pdev, ipd->regs); + pci_disable_device(pdev); +} + +static struct pci_device_id ioc3_mfd_id_table[] = { + { PCI_VENDOR_ID_SGI, PCI_DEVICE_ID_SGI_IOC3, PCI_ANY_ID, PCI_ANY_ID }, + { 0, }, +}; +MODULE_DEVICE_TABLE(pci, ioc3_mfd_id_table); + +static struct pci_driver ioc3_mfd_driver = { + .name = "IOC3", + .id_table = ioc3_mfd_id_table, + .probe = ioc3_mfd_probe, + .remove = ioc3_mfd_remove, +}; + +module_pci_driver(ioc3_mfd_driver); + +MODULE_AUTHOR("Thomas Bogendoerfer "); +MODULE_DESCRIPTION("SGI IOC3 MFD driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3