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/mips/sni/rm200.c | 485 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 485 insertions(+) create mode 100644 arch/mips/sni/rm200.c (limited to 'arch/mips/sni/rm200.c') diff --git a/arch/mips/sni/rm200.c b/arch/mips/sni/rm200.c new file mode 100644 index 000000000..d84744ca8 --- /dev/null +++ b/arch/mips/sni/rm200.c @@ -0,0 +1,485 @@ +/* + * RM200 specific code + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2006,2007 Thomas Bogendoerfer (tsbogend@alpha.franken.de) + * + * i8259 parts ripped out of arch/mips/kernel/i8259.c + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#define RM200_I8259A_IRQ_BASE 32 + +#define MEMPORT(_base,_irq) \ + { \ + .mapbase = _base, \ + .irq = _irq, \ + .uartclk = 1843200, \ + .iotype = UPIO_MEM, \ + .flags = UPF_BOOT_AUTOCONF|UPF_IOREMAP, \ + } + +static struct plat_serial8250_port rm200_data[] = { + MEMPORT(0x160003f8, RM200_I8259A_IRQ_BASE + 4), + MEMPORT(0x160002f8, RM200_I8259A_IRQ_BASE + 3), + { }, +}; + +static struct platform_device rm200_serial8250_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, + .dev = { + .platform_data = rm200_data, + }, +}; + +static struct resource rm200_ds1216_rsrc[] = { + { + .start = 0x1cd41ffc, + .end = 0x1cd41fff, + .flags = IORESOURCE_MEM + } +}; + +static struct platform_device rm200_ds1216_device = { + .name = "rtc-ds1216", + .num_resources = ARRAY_SIZE(rm200_ds1216_rsrc), + .resource = rm200_ds1216_rsrc +}; + +static struct resource snirm_82596_rm200_rsrc[] = { + { + .start = 0x18000000, + .end = 0x180fffff, + .flags = IORESOURCE_MEM + }, + { + .start = 0x1b000000, + .end = 0x1b000004, + .flags = IORESOURCE_MEM + }, + { + .start = 0x1ff00000, + .end = 0x1ff00020, + .flags = IORESOURCE_MEM + }, + { + .start = 27, + .end = 27, + .flags = IORESOURCE_IRQ + }, + { + .flags = 0x00 + } +}; + +static struct platform_device snirm_82596_rm200_pdev = { + .name = "snirm_82596", + .num_resources = ARRAY_SIZE(snirm_82596_rm200_rsrc), + .resource = snirm_82596_rm200_rsrc +}; + +static struct resource snirm_53c710_rm200_rsrc[] = { + { + .start = 0x19000000, + .end = 0x190fffff, + .flags = IORESOURCE_MEM + }, + { + .start = 26, + .end = 26, + .flags = IORESOURCE_IRQ + } +}; + +static struct platform_device snirm_53c710_rm200_pdev = { + .name = "snirm_53c710", + .num_resources = ARRAY_SIZE(snirm_53c710_rm200_rsrc), + .resource = snirm_53c710_rm200_rsrc +}; + +static int __init snirm_setup_devinit(void) +{ + if (sni_brd_type == SNI_BRD_RM200) { + platform_device_register(&rm200_serial8250_device); + platform_device_register(&rm200_ds1216_device); + platform_device_register(&snirm_82596_rm200_pdev); + platform_device_register(&snirm_53c710_rm200_pdev); + sni_eisa_root_init(); + } + return 0; +} + +device_initcall(snirm_setup_devinit); + +/* + * RM200 has an ISA and an EISA bus. The iSA bus is only used + * for onboard devices and also has twi i8259 PICs. Since these + * PICs are no accessible via inb/outb the following code uses + * readb/writeb to access them + */ + +static DEFINE_RAW_SPINLOCK(sni_rm200_i8259A_lock); +#define PIC_CMD 0x00 +#define PIC_IMR 0x01 +#define PIC_ISR PIC_CMD +#define PIC_POLL PIC_ISR +#define PIC_OCW3 PIC_ISR + +/* i8259A PIC related value */ +#define PIC_CASCADE_IR 2 +#define MASTER_ICW4_DEFAULT 0x01 +#define SLAVE_ICW4_DEFAULT 0x01 + +/* + * This contains the irq mask for both 8259A irq controllers, + */ +static unsigned int rm200_cached_irq_mask = 0xffff; +static __iomem u8 *rm200_pic_master; +static __iomem u8 *rm200_pic_slave; + +#define cached_master_mask (rm200_cached_irq_mask) +#define cached_slave_mask (rm200_cached_irq_mask >> 8) + +static void sni_rm200_disable_8259A_irq(struct irq_data *d) +{ + unsigned int mask, irq = d->irq - RM200_I8259A_IRQ_BASE; + unsigned long flags; + + mask = 1 << irq; + raw_spin_lock_irqsave(&sni_rm200_i8259A_lock, flags); + rm200_cached_irq_mask |= mask; + if (irq & 8) + writeb(cached_slave_mask, rm200_pic_slave + PIC_IMR); + else + writeb(cached_master_mask, rm200_pic_master + PIC_IMR); + raw_spin_unlock_irqrestore(&sni_rm200_i8259A_lock, flags); +} + +static void sni_rm200_enable_8259A_irq(struct irq_data *d) +{ + unsigned int mask, irq = d->irq - RM200_I8259A_IRQ_BASE; + unsigned long flags; + + mask = ~(1 << irq); + raw_spin_lock_irqsave(&sni_rm200_i8259A_lock, flags); + rm200_cached_irq_mask &= mask; + if (irq & 8) + writeb(cached_slave_mask, rm200_pic_slave + PIC_IMR); + else + writeb(cached_master_mask, rm200_pic_master + PIC_IMR); + raw_spin_unlock_irqrestore(&sni_rm200_i8259A_lock, flags); +} + +static inline int sni_rm200_i8259A_irq_real(unsigned int irq) +{ + int value; + int irqmask = 1 << irq; + + if (irq < 8) { + writeb(0x0B, rm200_pic_master + PIC_CMD); + value = readb(rm200_pic_master + PIC_CMD) & irqmask; + writeb(0x0A, rm200_pic_master + PIC_CMD); + return value; + } + writeb(0x0B, rm200_pic_slave + PIC_CMD); /* ISR register */ + value = readb(rm200_pic_slave + PIC_CMD) & (irqmask >> 8); + writeb(0x0A, rm200_pic_slave + PIC_CMD); + return value; +} + +/* + * Careful! The 8259A is a fragile beast, it pretty + * much _has_ to be done exactly like this (mask it + * first, _then_ send the EOI, and the order of EOI + * to the two 8259s is important! + */ +void sni_rm200_mask_and_ack_8259A(struct irq_data *d) +{ + unsigned int irqmask, irq = d->irq - RM200_I8259A_IRQ_BASE; + unsigned long flags; + + irqmask = 1 << irq; + raw_spin_lock_irqsave(&sni_rm200_i8259A_lock, flags); + /* + * Lightweight spurious IRQ detection. We do not want + * to overdo spurious IRQ handling - it's usually a sign + * of hardware problems, so we only do the checks we can + * do without slowing down good hardware unnecessarily. + * + * Note that IRQ7 and IRQ15 (the two spurious IRQs + * usually resulting from the 8259A-1|2 PICs) occur + * even if the IRQ is masked in the 8259A. Thus we + * can check spurious 8259A IRQs without doing the + * quite slow i8259A_irq_real() call for every IRQ. + * This does not cover 100% of spurious interrupts, + * but should be enough to warn the user that there + * is something bad going on ... + */ + if (rm200_cached_irq_mask & irqmask) + goto spurious_8259A_irq; + rm200_cached_irq_mask |= irqmask; + +handle_real_irq: + if (irq & 8) { + readb(rm200_pic_slave + PIC_IMR); + writeb(cached_slave_mask, rm200_pic_slave + PIC_IMR); + writeb(0x60+(irq & 7), rm200_pic_slave + PIC_CMD); + writeb(0x60+PIC_CASCADE_IR, rm200_pic_master + PIC_CMD); + } else { + readb(rm200_pic_master + PIC_IMR); + writeb(cached_master_mask, rm200_pic_master + PIC_IMR); + writeb(0x60+irq, rm200_pic_master + PIC_CMD); + } + raw_spin_unlock_irqrestore(&sni_rm200_i8259A_lock, flags); + return; + +spurious_8259A_irq: + /* + * this is the slow path - should happen rarely. + */ + if (sni_rm200_i8259A_irq_real(irq)) + /* + * oops, the IRQ _is_ in service according to the + * 8259A - not spurious, go handle it. + */ + goto handle_real_irq; + + { + static int spurious_irq_mask; + /* + * At this point we can be sure the IRQ is spurious, + * let's ACK and report it. [once per IRQ] + */ + if (!(spurious_irq_mask & irqmask)) { + printk(KERN_DEBUG + "spurious RM200 8259A interrupt: IRQ%d.\n", irq); + spurious_irq_mask |= irqmask; + } + atomic_inc(&irq_err_count); + /* + * Theoretically we do not have to handle this IRQ, + * but in Linux this does not cause problems and is + * simpler for us. + */ + goto handle_real_irq; + } +} + +static struct irq_chip sni_rm200_i8259A_chip = { + .name = "RM200-XT-PIC", + .irq_mask = sni_rm200_disable_8259A_irq, + .irq_unmask = sni_rm200_enable_8259A_irq, + .irq_mask_ack = sni_rm200_mask_and_ack_8259A, +}; + +/* + * Do the traditional i8259 interrupt polling thing. This is for the few + * cases where no better interrupt acknowledge method is available and we + * absolutely must touch the i8259. + */ +static inline int sni_rm200_i8259_irq(void) +{ + int irq; + + raw_spin_lock(&sni_rm200_i8259A_lock); + + /* Perform an interrupt acknowledge cycle on controller 1. */ + writeb(0x0C, rm200_pic_master + PIC_CMD); /* prepare for poll */ + irq = readb(rm200_pic_master + PIC_CMD) & 7; + if (irq == PIC_CASCADE_IR) { + /* + * Interrupt is cascaded so perform interrupt + * acknowledge on controller 2. + */ + writeb(0x0C, rm200_pic_slave + PIC_CMD); /* prepare for poll */ + irq = (readb(rm200_pic_slave + PIC_CMD) & 7) + 8; + } + + if (unlikely(irq == 7)) { + /* + * This may be a spurious interrupt. + * + * Read the interrupt status register (ISR). If the most + * significant bit is not set then there is no valid + * interrupt. + */ + writeb(0x0B, rm200_pic_master + PIC_ISR); /* ISR register */ + if (~readb(rm200_pic_master + PIC_ISR) & 0x80) + irq = -1; + } + + raw_spin_unlock(&sni_rm200_i8259A_lock); + + return likely(irq >= 0) ? irq + RM200_I8259A_IRQ_BASE : irq; +} + +void sni_rm200_init_8259A(void) +{ + unsigned long flags; + + raw_spin_lock_irqsave(&sni_rm200_i8259A_lock, flags); + + writeb(0xff, rm200_pic_master + PIC_IMR); + writeb(0xff, rm200_pic_slave + PIC_IMR); + + writeb(0x11, rm200_pic_master + PIC_CMD); + writeb(0, rm200_pic_master + PIC_IMR); + writeb(1U << PIC_CASCADE_IR, rm200_pic_master + PIC_IMR); + writeb(MASTER_ICW4_DEFAULT, rm200_pic_master + PIC_IMR); + writeb(0x11, rm200_pic_slave + PIC_CMD); + writeb(8, rm200_pic_slave + PIC_IMR); + writeb(PIC_CASCADE_IR, rm200_pic_slave + PIC_IMR); + writeb(SLAVE_ICW4_DEFAULT, rm200_pic_slave + PIC_IMR); + udelay(100); /* wait for 8259A to initialize */ + + writeb(cached_master_mask, rm200_pic_master + PIC_IMR); + writeb(cached_slave_mask, rm200_pic_slave + PIC_IMR); + + raw_spin_unlock_irqrestore(&sni_rm200_i8259A_lock, flags); +} + +/* + * IRQ2 is cascade interrupt to second interrupt controller + */ + +static struct resource sni_rm200_pic1_resource = { + .name = "onboard ISA pic1", + .start = 0x16000020, + .end = 0x16000023, + .flags = IORESOURCE_BUSY +}; + +static struct resource sni_rm200_pic2_resource = { + .name = "onboard ISA pic2", + .start = 0x160000a0, + .end = 0x160000a3, + .flags = IORESOURCE_BUSY +}; + +/* ISA irq handler */ +static irqreturn_t sni_rm200_i8259A_irq_handler(int dummy, void *p) +{ + int irq; + + irq = sni_rm200_i8259_irq(); + if (unlikely(irq < 0)) + return IRQ_NONE; + + do_IRQ(irq); + return IRQ_HANDLED; +} + +void __init sni_rm200_i8259_irqs(void) +{ + int i; + + rm200_pic_master = ioremap(0x16000020, 4); + if (!rm200_pic_master) + return; + rm200_pic_slave = ioremap(0x160000a0, 4); + if (!rm200_pic_slave) { + iounmap(rm200_pic_master); + return; + } + + insert_resource(&iomem_resource, &sni_rm200_pic1_resource); + insert_resource(&iomem_resource, &sni_rm200_pic2_resource); + + sni_rm200_init_8259A(); + + for (i = RM200_I8259A_IRQ_BASE; i < RM200_I8259A_IRQ_BASE + 16; i++) + irq_set_chip_and_handler(i, &sni_rm200_i8259A_chip, + handle_level_irq); + + if (request_irq(RM200_I8259A_IRQ_BASE + PIC_CASCADE_IR, no_action, + IRQF_NO_THREAD, "cascade", NULL)) + pr_err("Failed to register cascade interrupt\n"); +} + + +#define SNI_RM200_INT_STAT_REG CKSEG1ADDR(0xbc000000) +#define SNI_RM200_INT_ENA_REG CKSEG1ADDR(0xbc080000) + +#define SNI_RM200_INT_START 24 +#define SNI_RM200_INT_END 28 + +static void enable_rm200_irq(struct irq_data *d) +{ + unsigned int mask = 1 << (d->irq - SNI_RM200_INT_START); + + *(volatile u8 *)SNI_RM200_INT_ENA_REG &= ~mask; +} + +void disable_rm200_irq(struct irq_data *d) +{ + unsigned int mask = 1 << (d->irq - SNI_RM200_INT_START); + + *(volatile u8 *)SNI_RM200_INT_ENA_REG |= mask; +} + +static struct irq_chip rm200_irq_type = { + .name = "RM200", + .irq_mask = disable_rm200_irq, + .irq_unmask = enable_rm200_irq, +}; + +static void sni_rm200_hwint(void) +{ + u32 pending = read_c0_cause() & read_c0_status(); + u8 mask; + u8 stat; + int irq; + + if (pending & C_IRQ5) + do_IRQ(MIPS_CPU_IRQ_BASE + 7); + else if (pending & C_IRQ0) { + clear_c0_status(IE_IRQ0); + mask = *(volatile u8 *)SNI_RM200_INT_ENA_REG ^ 0x1f; + stat = *(volatile u8 *)SNI_RM200_INT_STAT_REG ^ 0x14; + irq = ffs(stat & mask & 0x1f); + + if (likely(irq > 0)) + do_IRQ(irq + SNI_RM200_INT_START - 1); + set_c0_status(IE_IRQ0); + } +} + +void __init sni_rm200_irq_init(void) +{ + int i; + + * (volatile u8 *)SNI_RM200_INT_ENA_REG = 0x1f; + + sni_rm200_i8259_irqs(); + mips_cpu_irq_init(); + /* Actually we've got more interrupts to handle ... */ + for (i = SNI_RM200_INT_START; i <= SNI_RM200_INT_END; i++) + irq_set_chip_and_handler(i, &rm200_irq_type, handle_level_irq); + sni_hwint = sni_rm200_hwint; + change_c0_status(ST0_IM, IE_IRQ0); + if (request_irq(SNI_RM200_INT_START + 0, sni_rm200_i8259A_irq_handler, + 0, "onboard ISA", NULL)) + pr_err("Failed to register onboard ISA interrupt\n"); + if (request_irq(SNI_RM200_INT_START + 1, sni_isa_irq_handler, 0, "ISA", + NULL)) + pr_err("Failed to register ISA interrupt\n"); +} + +void __init sni_rm200_init(void) +{ +} -- cgit v1.2.3