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author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /arch/powerpc/platforms/85xx/mpc85xx_cds.c | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
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().
...
Diffstat (limited to 'arch/powerpc/platforms/85xx/mpc85xx_cds.c')
-rw-r--r-- | arch/powerpc/platforms/85xx/mpc85xx_cds.c | 397 |
1 files changed, 397 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_cds.c b/arch/powerpc/platforms/85xx/mpc85xx_cds.c new file mode 100644 index 000000000..0b8f2101c --- /dev/null +++ b/arch/powerpc/platforms/85xx/mpc85xx_cds.c @@ -0,0 +1,397 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * MPC85xx setup and early boot code plus other random bits. + * + * Maintained by Kumar Gala (see MAINTAINERS for contact information) + * + * Copyright 2005, 2011-2012 Freescale Semiconductor Inc. + */ + +#include <linux/stddef.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/reboot.h> +#include <linux/pci.h> +#include <linux/kdev_t.h> +#include <linux/major.h> +#include <linux/console.h> +#include <linux/delay.h> +#include <linux/seq_file.h> +#include <linux/initrd.h> +#include <linux/interrupt.h> +#include <linux/fsl_devices.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> +#include <linux/of_platform.h> +#include <linux/pgtable.h> + +#include <asm/page.h> +#include <linux/atomic.h> +#include <asm/time.h> +#include <asm/io.h> +#include <asm/machdep.h> +#include <asm/ipic.h> +#include <asm/pci-bridge.h> +#include <asm/irq.h> +#include <mm/mmu_decl.h> +#include <asm/udbg.h> +#include <asm/mpic.h> +#include <asm/i8259.h> + +#include <sysdev/fsl_soc.h> +#include <sysdev/fsl_pci.h> + +#include "mpc85xx.h" + +/* + * The CDS board contains an FPGA/CPLD called "Cadmus", which collects + * various logic and performs system control functions. + * Here is the FPGA/CPLD register map. + */ +struct cadmus_reg { + u8 cm_ver; /* Board version */ + u8 cm_csr; /* General control/status */ + u8 cm_rst; /* Reset control */ + u8 cm_hsclk; /* High speed clock */ + u8 cm_hsxclk; /* High speed clock extended */ + u8 cm_led; /* LED data */ + u8 cm_pci; /* PCI control/status */ + u8 cm_dma; /* DMA control */ + u8 res[248]; /* Total 256 bytes */ +}; + +static struct cadmus_reg *cadmus; + +#ifdef CONFIG_PCI + +#define ARCADIA_HOST_BRIDGE_IDSEL 17 +#define ARCADIA_2ND_BRIDGE_IDSEL 3 + +static int mpc85xx_exclude_device(struct pci_controller *hose, + u_char bus, u_char devfn) +{ + /* We explicitly do not go past the Tundra 320 Bridge */ + if ((bus == 1) && (PCI_SLOT(devfn) == ARCADIA_2ND_BRIDGE_IDSEL)) + return PCIBIOS_DEVICE_NOT_FOUND; + if ((bus == 0) && (PCI_SLOT(devfn) == ARCADIA_2ND_BRIDGE_IDSEL)) + return PCIBIOS_DEVICE_NOT_FOUND; + else + return PCIBIOS_SUCCESSFUL; +} + +static int mpc85xx_cds_restart(struct notifier_block *this, + unsigned long mode, void *cmd) +{ + struct pci_dev *dev; + u_char tmp; + + if ((dev = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, + NULL))) { + + /* Use the VIA Super Southbridge to force a PCI reset */ + pci_read_config_byte(dev, 0x47, &tmp); + pci_write_config_byte(dev, 0x47, tmp | 1); + + /* Flush the outbound PCI write queues */ + pci_read_config_byte(dev, 0x47, &tmp); + + /* + * At this point, the hardware reset should have triggered. + * However, if it doesn't work for some mysterious reason, + * just fall through to the default reset below. + */ + + pci_dev_put(dev); + } + + /* + * If we can't find the VIA chip (maybe the P2P bridge is + * disabled) or the VIA chip reset didn't work, just return + * and let default reset sequence happen. + */ + return NOTIFY_DONE; +} + +static int mpc85xx_cds_restart_register(void) +{ + static struct notifier_block restart_handler; + + restart_handler.notifier_call = mpc85xx_cds_restart; + restart_handler.priority = 192; + + return register_restart_handler(&restart_handler); +} +machine_arch_initcall(mpc85xx_cds, mpc85xx_cds_restart_register); + + +static void __init mpc85xx_cds_pci_irq_fixup(struct pci_dev *dev) +{ + u_char c; + if (dev->vendor == PCI_VENDOR_ID_VIA) { + switch (dev->device) { + case PCI_DEVICE_ID_VIA_82C586_1: + /* + * U-Boot does not set the enable bits + * for the IDE device. Force them on here. + */ + pci_read_config_byte(dev, 0x40, &c); + c |= 0x03; /* IDE: Chip Enable Bits */ + pci_write_config_byte(dev, 0x40, c); + + /* + * Since only primary interface works, force the + * IDE function to standard primary IDE interrupt + * w/ 8259 offset + */ + dev->irq = 14; + pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq); + break; + /* + * Force legacy USB interrupt routing + */ + case PCI_DEVICE_ID_VIA_82C586_2: + /* There are two USB controllers. + * Identify them by function number + */ + if (PCI_FUNC(dev->devfn) == 3) + dev->irq = 11; + else + dev->irq = 10; + pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq); + break; + default: + break; + } + } +} + +static void skip_fake_bridge(struct pci_dev *dev) +{ + /* Make it an error to skip the fake bridge + * in pci_setup_device() in probe.c */ + dev->hdr_type = 0x7f; +} +DECLARE_PCI_FIXUP_EARLY(0x1957, 0x3fff, skip_fake_bridge); +DECLARE_PCI_FIXUP_EARLY(0x3fff, 0x1957, skip_fake_bridge); +DECLARE_PCI_FIXUP_EARLY(0xff3f, 0x5719, skip_fake_bridge); + +#define PCI_DEVICE_ID_IDT_TSI310 0x01a7 + +/* + * Fix Tsi310 PCI-X bridge resource. + * Force the bridge to open a window from 0x0000-0x1fff in PCI I/O space. + * This allows legacy I/O(i8259, etc) on the VIA southbridge to be accessed. + */ +void mpc85xx_cds_fixup_bus(struct pci_bus *bus) +{ + struct pci_dev *dev = bus->self; + struct resource *res = bus->resource[0]; + + if (dev != NULL && + dev->vendor == PCI_VENDOR_ID_IBM && + dev->device == PCI_DEVICE_ID_IDT_TSI310) { + if (res) { + res->start = 0; + res->end = 0x1fff; + res->flags = IORESOURCE_IO; + pr_info("mpc85xx_cds: PCI bridge resource fixup applied\n"); + pr_info("mpc85xx_cds: %pR\n", res); + } + } + + fsl_pcibios_fixup_bus(bus); +} + +#ifdef CONFIG_PPC_I8259 +static void mpc85xx_8259_cascade_handler(struct irq_desc *desc) +{ + unsigned int cascade_irq = i8259_irq(); + + if (cascade_irq) + /* handle an interrupt from the 8259 */ + generic_handle_irq(cascade_irq); + + /* check for any interrupts from the shared IRQ line */ + handle_fasteoi_irq(desc); +} + +static irqreturn_t mpc85xx_8259_cascade_action(int irq, void *dev_id) +{ + return IRQ_HANDLED; +} +#endif /* PPC_I8259 */ +#endif /* CONFIG_PCI */ + +static void __init mpc85xx_cds_pic_init(void) +{ + struct mpic *mpic; + mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN, + 0, 256, " OpenPIC "); + BUG_ON(mpic == NULL); + mpic_init(mpic); +} + +#if defined(CONFIG_PPC_I8259) && defined(CONFIG_PCI) +static int mpc85xx_cds_8259_attach(void) +{ + int ret; + struct device_node *np = NULL; + struct device_node *cascade_node = NULL; + int cascade_irq; + + /* Initialize the i8259 controller */ + for_each_node_by_type(np, "interrupt-controller") + if (of_device_is_compatible(np, "chrp,iic")) { + cascade_node = np; + break; + } + + if (cascade_node == NULL) { + printk(KERN_DEBUG "Could not find i8259 PIC\n"); + return -ENODEV; + } + + cascade_irq = irq_of_parse_and_map(cascade_node, 0); + if (!cascade_irq) { + printk(KERN_ERR "Failed to map cascade interrupt\n"); + return -ENXIO; + } + + i8259_init(cascade_node, 0); + of_node_put(cascade_node); + + /* + * Hook the interrupt to make sure desc->action is never NULL. + * This is required to ensure that the interrupt does not get + * disabled when the last user of the shared IRQ line frees their + * interrupt. + */ + ret = request_irq(cascade_irq, mpc85xx_8259_cascade_action, + IRQF_SHARED | IRQF_NO_THREAD, "8259 cascade", + cascade_node); + if (ret) { + printk(KERN_ERR "Failed to setup cascade interrupt\n"); + return ret; + } + + /* Success. Connect our low-level cascade handler. */ + irq_set_handler(cascade_irq, mpc85xx_8259_cascade_handler); + + return 0; +} +machine_device_initcall(mpc85xx_cds, mpc85xx_cds_8259_attach); + +#endif /* CONFIG_PPC_I8259 */ + +static void __init mpc85xx_cds_pci_assign_primary(void) +{ +#ifdef CONFIG_PCI + struct device_node *np; + + if (fsl_pci_primary) + return; + + /* + * MPC85xx_CDS has ISA bridge but unfortunately there is no + * isa node in device tree. We now looking for i8259 node as + * a workaround for such a broken device tree. This routine + * is for complying to all device trees. + */ + np = of_find_node_by_name(NULL, "i8259"); + while ((fsl_pci_primary = of_get_parent(np))) { + of_node_put(np); + np = fsl_pci_primary; + + if ((of_device_is_compatible(np, "fsl,mpc8540-pci") || + of_device_is_compatible(np, "fsl,mpc8548-pcie")) && + of_device_is_available(np)) + return; + } +#endif +} + +/* + * Setup the architecture + */ +static void __init mpc85xx_cds_setup_arch(void) +{ + struct device_node *np; + int cds_pci_slot; + + if (ppc_md.progress) + ppc_md.progress("mpc85xx_cds_setup_arch()", 0); + + np = of_find_compatible_node(NULL, NULL, "fsl,mpc8548cds-fpga"); + if (!np) { + pr_err("Could not find FPGA node.\n"); + return; + } + + cadmus = of_iomap(np, 0); + of_node_put(np); + if (!cadmus) { + pr_err("Fail to map FPGA area.\n"); + return; + } + + if (ppc_md.progress) { + char buf[40]; + cds_pci_slot = ((in_8(&cadmus->cm_csr) >> 6) & 0x3) + 1; + snprintf(buf, 40, "CDS Version = 0x%x in slot %d\n", + in_8(&cadmus->cm_ver), cds_pci_slot); + ppc_md.progress(buf, 0); + } + +#ifdef CONFIG_PCI + ppc_md.pci_irq_fixup = mpc85xx_cds_pci_irq_fixup; + ppc_md.pci_exclude_device = mpc85xx_exclude_device; +#endif + + mpc85xx_cds_pci_assign_primary(); + fsl_pci_assign_primary(); +} + +static void mpc85xx_cds_show_cpuinfo(struct seq_file *m) +{ + uint pvid, svid, phid1; + + pvid = mfspr(SPRN_PVR); + svid = mfspr(SPRN_SVR); + + seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n"); + seq_printf(m, "Machine\t\t: MPC85xx CDS (0x%x)\n", + in_8(&cadmus->cm_ver)); + seq_printf(m, "PVR\t\t: 0x%x\n", pvid); + seq_printf(m, "SVR\t\t: 0x%x\n", svid); + + /* Display cpu Pll setting */ + phid1 = mfspr(SPRN_HID1); + seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); +} + + +/* + * Called very early, device-tree isn't unflattened + */ +static int __init mpc85xx_cds_probe(void) +{ + return of_machine_is_compatible("MPC85xxCDS"); +} + +machine_arch_initcall(mpc85xx_cds, mpc85xx_common_publish_devices); + +define_machine(mpc85xx_cds) { + .name = "MPC85xx CDS", + .probe = mpc85xx_cds_probe, + .setup_arch = mpc85xx_cds_setup_arch, + .init_IRQ = mpc85xx_cds_pic_init, + .show_cpuinfo = mpc85xx_cds_show_cpuinfo, + .get_irq = mpic_get_irq, +#ifdef CONFIG_PCI + .pcibios_fixup_bus = mpc85xx_cds_fixup_bus, + .pcibios_fixup_phb = fsl_pcibios_fixup_phb, +#endif + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +}; |