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/sibyte/bcm1480/Makefile | 4 + arch/mips/sibyte/bcm1480/irq.c | 348 ++++++++++++++++++++++++++++++++++++++ arch/mips/sibyte/bcm1480/setup.c | 126 ++++++++++++++ arch/mips/sibyte/bcm1480/smp.c | 179 ++++++++++++++++++++ arch/mips/sibyte/bcm1480/time.c | 14 ++ 5 files changed, 671 insertions(+) create mode 100644 arch/mips/sibyte/bcm1480/Makefile create mode 100644 arch/mips/sibyte/bcm1480/irq.c create mode 100644 arch/mips/sibyte/bcm1480/setup.c create mode 100644 arch/mips/sibyte/bcm1480/smp.c create mode 100644 arch/mips/sibyte/bcm1480/time.c (limited to 'arch/mips/sibyte/bcm1480') diff --git a/arch/mips/sibyte/bcm1480/Makefile b/arch/mips/sibyte/bcm1480/Makefile new file mode 100644 index 000000000..cf1327d3f --- /dev/null +++ b/arch/mips/sibyte/bcm1480/Makefile @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-y := setup.o irq.o time.o + +obj-$(CONFIG_SMP) += smp.o diff --git a/arch/mips/sibyte/bcm1480/irq.c b/arch/mips/sibyte/bcm1480/irq.c new file mode 100644 index 000000000..7929bee91 --- /dev/null +++ b/arch/mips/sibyte/bcm1480/irq.c @@ -0,0 +1,348 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2000,2001,2002,2003,2004 Broadcom Corporation + */ +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include +#include +#include + +#include +#include + +/* + * These are the routines that handle all the low level interrupt stuff. + * Actions handled here are: initialization of the interrupt map, requesting of + * interrupt lines by handlers, dispatching if interrupts to handlers, probing + * for interrupt lines + */ + +#ifdef CONFIG_PCI +extern unsigned long ht_eoi_space; +#endif + +/* Store the CPU id (not the logical number) */ +int bcm1480_irq_owner[BCM1480_NR_IRQS]; + +static DEFINE_RAW_SPINLOCK(bcm1480_imr_lock); + +void bcm1480_mask_irq(int cpu, int irq) +{ + unsigned long flags, hl_spacing; + u64 cur_ints; + + raw_spin_lock_irqsave(&bcm1480_imr_lock, flags); + hl_spacing = 0; + if ((irq >= BCM1480_NR_IRQS_HALF) && (irq <= BCM1480_NR_IRQS)) { + hl_spacing = BCM1480_IMR_HL_SPACING; + irq -= BCM1480_NR_IRQS_HALF; + } + cur_ints = ____raw_readq(IOADDR(A_BCM1480_IMR_MAPPER(cpu) + R_BCM1480_IMR_INTERRUPT_MASK_H + hl_spacing)); + cur_ints |= (((u64) 1) << irq); + ____raw_writeq(cur_ints, IOADDR(A_BCM1480_IMR_MAPPER(cpu) + R_BCM1480_IMR_INTERRUPT_MASK_H + hl_spacing)); + raw_spin_unlock_irqrestore(&bcm1480_imr_lock, flags); +} + +void bcm1480_unmask_irq(int cpu, int irq) +{ + unsigned long flags, hl_spacing; + u64 cur_ints; + + raw_spin_lock_irqsave(&bcm1480_imr_lock, flags); + hl_spacing = 0; + if ((irq >= BCM1480_NR_IRQS_HALF) && (irq <= BCM1480_NR_IRQS)) { + hl_spacing = BCM1480_IMR_HL_SPACING; + irq -= BCM1480_NR_IRQS_HALF; + } + cur_ints = ____raw_readq(IOADDR(A_BCM1480_IMR_MAPPER(cpu) + R_BCM1480_IMR_INTERRUPT_MASK_H + hl_spacing)); + cur_ints &= ~(((u64) 1) << irq); + ____raw_writeq(cur_ints, IOADDR(A_BCM1480_IMR_MAPPER(cpu) + R_BCM1480_IMR_INTERRUPT_MASK_H + hl_spacing)); + raw_spin_unlock_irqrestore(&bcm1480_imr_lock, flags); +} + +#ifdef CONFIG_SMP +static int bcm1480_set_affinity(struct irq_data *d, const struct cpumask *mask, + bool force) +{ + unsigned int irq_dirty, irq = d->irq; + int i = 0, old_cpu, cpu, int_on, k; + u64 cur_ints; + unsigned long flags; + + i = cpumask_first_and(mask, cpu_online_mask); + + /* Convert logical CPU to physical CPU */ + cpu = cpu_logical_map(i); + + /* Protect against other affinity changers and IMR manipulation */ + raw_spin_lock_irqsave(&bcm1480_imr_lock, flags); + + /* Swizzle each CPU's IMR (but leave the IP selection alone) */ + old_cpu = bcm1480_irq_owner[irq]; + irq_dirty = irq; + if ((irq_dirty >= BCM1480_NR_IRQS_HALF) && (irq_dirty <= BCM1480_NR_IRQS)) { + irq_dirty -= BCM1480_NR_IRQS_HALF; + } + + for (k=0; k<2; k++) { /* Loop through high and low interrupt mask register */ + cur_ints = ____raw_readq(IOADDR(A_BCM1480_IMR_MAPPER(old_cpu) + R_BCM1480_IMR_INTERRUPT_MASK_H + (k*BCM1480_IMR_HL_SPACING))); + int_on = !(cur_ints & (((u64) 1) << irq_dirty)); + if (int_on) { + /* If it was on, mask it */ + cur_ints |= (((u64) 1) << irq_dirty); + ____raw_writeq(cur_ints, IOADDR(A_BCM1480_IMR_MAPPER(old_cpu) + R_BCM1480_IMR_INTERRUPT_MASK_H + (k*BCM1480_IMR_HL_SPACING))); + } + bcm1480_irq_owner[irq] = cpu; + if (int_on) { + /* unmask for the new CPU */ + cur_ints = ____raw_readq(IOADDR(A_BCM1480_IMR_MAPPER(cpu) + R_BCM1480_IMR_INTERRUPT_MASK_H + (k*BCM1480_IMR_HL_SPACING))); + cur_ints &= ~(((u64) 1) << irq_dirty); + ____raw_writeq(cur_ints, IOADDR(A_BCM1480_IMR_MAPPER(cpu) + R_BCM1480_IMR_INTERRUPT_MASK_H + (k*BCM1480_IMR_HL_SPACING))); + } + } + raw_spin_unlock_irqrestore(&bcm1480_imr_lock, flags); + + return 0; +} +#endif + + +/*****************************************************************************/ + +static void disable_bcm1480_irq(struct irq_data *d) +{ + unsigned int irq = d->irq; + + bcm1480_mask_irq(bcm1480_irq_owner[irq], irq); +} + +static void enable_bcm1480_irq(struct irq_data *d) +{ + unsigned int irq = d->irq; + + bcm1480_unmask_irq(bcm1480_irq_owner[irq], irq); +} + + +static void ack_bcm1480_irq(struct irq_data *d) +{ + unsigned int irq_dirty, irq = d->irq; + u64 pending; + int k; + + /* + * If the interrupt was an HT interrupt, now is the time to + * clear it. NOTE: we assume the HT bridge was set up to + * deliver the interrupts to all CPUs (which makes affinity + * changing easier for us) + */ + irq_dirty = irq; + if ((irq_dirty >= BCM1480_NR_IRQS_HALF) && (irq_dirty <= BCM1480_NR_IRQS)) { + irq_dirty -= BCM1480_NR_IRQS_HALF; + } + for (k=0; k<2; k++) { /* Loop through high and low LDT interrupts */ + pending = __raw_readq(IOADDR(A_BCM1480_IMR_REGISTER(bcm1480_irq_owner[irq], + R_BCM1480_IMR_LDT_INTERRUPT_H + (k*BCM1480_IMR_HL_SPACING)))); + pending &= ((u64)1 << (irq_dirty)); + if (pending) { +#ifdef CONFIG_SMP + int i; + for (i=0; i +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include +#include +#include + +unsigned int sb1_pass; +unsigned int soc_pass; +unsigned int soc_type; +EXPORT_SYMBOL(soc_type); +unsigned int periph_rev; +EXPORT_SYMBOL_GPL(periph_rev); +unsigned int zbbus_mhz; +EXPORT_SYMBOL(zbbus_mhz); + +static unsigned int part_type; + +static char *soc_str; +static char *pass_str; + +static int __init setup_bcm1x80_bcm1x55(void) +{ + switch (soc_pass) { + case K_SYS_REVISION_BCM1480_S0: + periph_rev = 1; + pass_str = "S0 (pass1)"; + break; + case K_SYS_REVISION_BCM1480_A1: + periph_rev = 1; + pass_str = "A1 (pass1)"; + break; + case K_SYS_REVISION_BCM1480_A2: + periph_rev = 1; + pass_str = "A2 (pass1)"; + break; + case K_SYS_REVISION_BCM1480_A3: + periph_rev = 1; + pass_str = "A3 (pass1)"; + break; + case K_SYS_REVISION_BCM1480_B0: + periph_rev = 1; + pass_str = "B0 (pass2)"; + break; + default: + printk("Unknown %s rev %x\n", soc_str, soc_pass); + periph_rev = 1; + pass_str = "Unknown Revision"; + break; + } + + return 0; +} + +/* Setup code likely to be common to all SiByte platforms */ + +static int __init sys_rev_decode(void) +{ + int ret = 0; + + switch (soc_type) { + case K_SYS_SOC_TYPE_BCM1x80: + if (part_type == K_SYS_PART_BCM1480) + soc_str = "BCM1480"; + else if (part_type == K_SYS_PART_BCM1280) + soc_str = "BCM1280"; + else + soc_str = "BCM1x80"; + ret = setup_bcm1x80_bcm1x55(); + break; + + case K_SYS_SOC_TYPE_BCM1x55: + if (part_type == K_SYS_PART_BCM1455) + soc_str = "BCM1455"; + else if (part_type == K_SYS_PART_BCM1255) + soc_str = "BCM1255"; + else + soc_str = "BCM1x55"; + ret = setup_bcm1x80_bcm1x55(); + break; + + default: + printk("Unknown part type %x\n", part_type); + ret = 1; + break; + } + + return ret; +} + +void __init bcm1480_setup(void) +{ + uint64_t sys_rev; + int plldiv; + + sb1_pass = read_c0_prid() & PRID_REV_MASK; + sys_rev = __raw_readq(IOADDR(A_SCD_SYSTEM_REVISION)); + soc_type = SYS_SOC_TYPE(sys_rev); + part_type = G_SYS_PART(sys_rev); + soc_pass = G_SYS_REVISION(sys_rev); + + if (sys_rev_decode()) { + printk("Restart after failure to identify SiByte chip\n"); + machine_restart(NULL); + } + + plldiv = G_BCM1480_SYS_PLL_DIV(__raw_readq(IOADDR(A_SCD_SYSTEM_CFG))); + zbbus_mhz = ((plldiv >> 1) * 50) + ((plldiv & 1) * 25); + + printk("Broadcom SiByte %s %s @ %d MHz (SB-1A rev %d)\n", + soc_str, pass_str, zbbus_mhz * 2, sb1_pass); + printk("Board type: %s\n", get_system_type()); +} diff --git a/arch/mips/sibyte/bcm1480/smp.c b/arch/mips/sibyte/bcm1480/smp.c new file mode 100644 index 000000000..5861e5025 --- /dev/null +++ b/arch/mips/sibyte/bcm1480/smp.c @@ -0,0 +1,179 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2001,2002,2004 Broadcom Corporation + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +/* + * These are routines for dealing with the bcm1480 smp capabilities + * independent of board/firmware + */ + +static void *mailbox_0_set_regs[] = { + IOADDR(A_BCM1480_IMR_CPU0_BASE + R_BCM1480_IMR_MAILBOX_0_SET_CPU), + IOADDR(A_BCM1480_IMR_CPU1_BASE + R_BCM1480_IMR_MAILBOX_0_SET_CPU), + IOADDR(A_BCM1480_IMR_CPU2_BASE + R_BCM1480_IMR_MAILBOX_0_SET_CPU), + IOADDR(A_BCM1480_IMR_CPU3_BASE + R_BCM1480_IMR_MAILBOX_0_SET_CPU), +}; + +static void *mailbox_0_clear_regs[] = { + IOADDR(A_BCM1480_IMR_CPU0_BASE + R_BCM1480_IMR_MAILBOX_0_CLR_CPU), + IOADDR(A_BCM1480_IMR_CPU1_BASE + R_BCM1480_IMR_MAILBOX_0_CLR_CPU), + IOADDR(A_BCM1480_IMR_CPU2_BASE + R_BCM1480_IMR_MAILBOX_0_CLR_CPU), + IOADDR(A_BCM1480_IMR_CPU3_BASE + R_BCM1480_IMR_MAILBOX_0_CLR_CPU), +}; + +static void *mailbox_0_regs[] = { + IOADDR(A_BCM1480_IMR_CPU0_BASE + R_BCM1480_IMR_MAILBOX_0_CPU), + IOADDR(A_BCM1480_IMR_CPU1_BASE + R_BCM1480_IMR_MAILBOX_0_CPU), + IOADDR(A_BCM1480_IMR_CPU2_BASE + R_BCM1480_IMR_MAILBOX_0_CPU), + IOADDR(A_BCM1480_IMR_CPU3_BASE + R_BCM1480_IMR_MAILBOX_0_CPU), +}; + +/* + * SMP init and finish on secondary CPUs + */ +void bcm1480_smp_init(void) +{ + unsigned int imask = STATUSF_IP4 | STATUSF_IP3 | STATUSF_IP2 | + STATUSF_IP1 | STATUSF_IP0; + + /* Set interrupt mask, but don't enable */ + change_c0_status(ST0_IM, imask); +} + +/* + * These are routines for dealing with the sb1250 smp capabilities + * independent of board/firmware + */ + +/* + * Simple enough; everything is set up, so just poke the appropriate mailbox + * register, and we should be set + */ +static void bcm1480_send_ipi_single(int cpu, unsigned int action) +{ + __raw_writeq((((u64)action)<< 48), mailbox_0_set_regs[cpu]); +} + +static void bcm1480_send_ipi_mask(const struct cpumask *mask, + unsigned int action) +{ + unsigned int i; + + for_each_cpu(i, mask) + bcm1480_send_ipi_single(i, action); +} + +/* + * Code to run on secondary just after probing the CPU + */ +static void bcm1480_init_secondary(void) +{ + extern void bcm1480_smp_init(void); + + bcm1480_smp_init(); +} + +/* + * Do any tidying up before marking online and running the idle + * loop + */ +static void bcm1480_smp_finish(void) +{ + extern void sb1480_clockevent_init(void); + + sb1480_clockevent_init(); + local_irq_enable(); +} + +/* + * Setup the PC, SP, and GP of a secondary processor and start it + * running! + */ +static int bcm1480_boot_secondary(int cpu, struct task_struct *idle) +{ + int retval; + + retval = cfe_cpu_start(cpu_logical_map(cpu), &smp_bootstrap, + __KSTK_TOS(idle), + (unsigned long)task_thread_info(idle), 0); + if (retval != 0) + printk("cfe_start_cpu(%i) returned %i\n" , cpu, retval); + return retval; +} + +/* + * Use CFE to find out how many CPUs are available, setting up + * cpu_possible_mask and the logical/physical mappings. + * XXXKW will the boot CPU ever not be physical 0? + * + * Common setup before any secondaries are started + */ +static void __init bcm1480_smp_setup(void) +{ + int i, num; + + init_cpu_possible(cpumask_of(0)); + __cpu_number_map[0] = 0; + __cpu_logical_map[0] = 0; + + for (i = 1, num = 0; i < NR_CPUS; i++) { + if (cfe_cpu_stop(i) == 0) { + set_cpu_possible(i, true); + __cpu_number_map[i] = ++num; + __cpu_logical_map[num] = i; + } + } + printk(KERN_INFO "Detected %i available secondary CPU(s)\n", num); +} + +static void __init bcm1480_prepare_cpus(unsigned int max_cpus) +{ +} + +const struct plat_smp_ops bcm1480_smp_ops = { + .send_ipi_single = bcm1480_send_ipi_single, + .send_ipi_mask = bcm1480_send_ipi_mask, + .init_secondary = bcm1480_init_secondary, + .smp_finish = bcm1480_smp_finish, + .boot_secondary = bcm1480_boot_secondary, + .smp_setup = bcm1480_smp_setup, + .prepare_cpus = bcm1480_prepare_cpus, +}; + +void bcm1480_mailbox_interrupt(void) +{ + int cpu = smp_processor_id(); + int irq = K_BCM1480_INT_MBOX_0_0; + unsigned int action; + + kstat_incr_irq_this_cpu(irq); + /* Load the mailbox register to figure out what we're supposed to do */ + action = (__raw_readq(mailbox_0_regs[cpu]) >> 48) & 0xffff; + + /* Clear the mailbox to clear the interrupt */ + __raw_writeq(((u64)action)<<48, mailbox_0_clear_regs[cpu]); + + if (action & SMP_RESCHEDULE_YOURSELF) + scheduler_ipi(); + + if (action & SMP_CALL_FUNCTION) { + irq_enter(); + generic_smp_call_function_interrupt(); + irq_exit(); + } +} diff --git a/arch/mips/sibyte/bcm1480/time.c b/arch/mips/sibyte/bcm1480/time.c new file mode 100644 index 000000000..e6450d79f --- /dev/null +++ b/arch/mips/sibyte/bcm1480/time.c @@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2000,2001,2004 Broadcom Corporation + */ +#include + +extern void sb1480_clockevent_init(void); +extern void sb1480_clocksource_init(void); + +void __init plat_time_init(void) +{ + sb1480_clocksource_init(); + sb1480_clockevent_init(); +} -- cgit v1.2.3