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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/m68k/atari/ataints.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/m68k/atari/ataints.c')
-rw-r--r-- | arch/m68k/atari/ataints.c | 391 |
1 files changed, 391 insertions, 0 deletions
diff --git a/arch/m68k/atari/ataints.c b/arch/m68k/atari/ataints.c new file mode 100644 index 000000000..56f02ea2c --- /dev/null +++ b/arch/m68k/atari/ataints.c @@ -0,0 +1,391 @@ +/* + * arch/m68k/atari/ataints.c -- Atari Linux interrupt handling code + * + * 5/2/94 Roman Hodek: + * Added support for TT interrupts; setup for TT SCU (may someone has + * twiddled there and we won't get the right interrupts :-() + * + * Major change: The device-independent code in m68k/ints.c didn't know + * about non-autovec ints yet. It hardcoded the number of possible ints to + * 7 (IRQ1...IRQ7). But the Atari has lots of non-autovec ints! I made the + * number of possible ints a constant defined in interrupt.h, which is + * 47 for the Atari. So we can call request_irq() for all Atari interrupts + * just the normal way. Additionally, all vectors >= 48 are initialized to + * call trap() instead of inthandler(). This must be changed here, too. + * + * 1995-07-16 Lars Brinkhoff <f93labr@dd.chalmers.se>: + * Corrected a bug in atari_add_isr() which rejected all SCC + * interrupt sources if there were no TT MFP! + * + * 12/13/95: New interface functions atari_level_triggered_int() and + * atari_register_vme_int() as support for level triggered VME interrupts. + * + * 02/12/96: (Roman) + * Total rewrite of Atari interrupt handling, for new scheme see comments + * below. + * + * 1996-09-03 lars brinkhoff <f93labr@dd.chalmers.se>: + * Added new function atari_unregister_vme_int(), and + * modified atari_register_vme_int() as well as IS_VALID_INTNO() + * to work with it. + * + * 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. + * + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/kernel_stat.h> +#include <linux/init.h> +#include <linux/seq_file.h> +#include <linux/module.h> +#include <linux/irq.h> + +#include <asm/traps.h> + +#include <asm/atarihw.h> +#include <asm/atariints.h> +#include <asm/atari_stdma.h> +#include <asm/irq.h> +#include <asm/entry.h> +#include <asm/io.h> + + +/* + * Atari interrupt handling scheme: + * -------------------------------- + * + * All interrupt source have an internal number (defined in + * <asm/atariints.h>): Autovector interrupts are 1..7, then follow ST-MFP, + * TT-MFP, SCC, and finally VME interrupts. Vector numbers for the latter can + * be allocated by atari_register_vme_int(). + */ + +/* + * Bitmap for free interrupt vector numbers + * (new vectors starting from 0x70 can be allocated by + * atari_register_vme_int()) + */ +static int free_vme_vec_bitmap; + +/* GK: + * HBL IRQ handler for Falcon. Nobody needs it :-) + * ++andreas: raise ipl to disable further HBLANK interrupts. + */ +asmlinkage void falcon_hblhandler(void); +asm(".text\n" +__ALIGN_STR "\n\t" +"falcon_hblhandler:\n\t" + "orw #0x200,%sp@\n\t" /* set saved ipl to 2 */ + "rte"); + +extern void atari_microwire_cmd(int cmd); + +static unsigned int atari_irq_startup(struct irq_data *data) +{ + unsigned int irq = data->irq; + + m68k_irq_startup(data); + atari_turnon_irq(irq); + atari_enable_irq(irq); + return 0; +} + +static void atari_irq_shutdown(struct irq_data *data) +{ + unsigned int irq = data->irq; + + atari_disable_irq(irq); + atari_turnoff_irq(irq); + m68k_irq_shutdown(data); + + if (irq == IRQ_AUTO_4) + vectors[VEC_INT4] = falcon_hblhandler; +} + +static void atari_irq_enable(struct irq_data *data) +{ + atari_enable_irq(data->irq); +} + +static void atari_irq_disable(struct irq_data *data) +{ + atari_disable_irq(data->irq); +} + +static struct irq_chip atari_irq_chip = { + .name = "atari", + .irq_startup = atari_irq_startup, + .irq_shutdown = atari_irq_shutdown, + .irq_enable = atari_irq_enable, + .irq_disable = atari_irq_disable, +}; + +/* + * ST-MFP timer D chained interrupts - each driver gets its own timer + * interrupt instance. + */ + +struct mfptimerbase { + volatile struct MFP *mfp; + unsigned char mfp_mask, mfp_data; + unsigned short int_mask; + int handler_irq, mfptimer_irq, server_irq; + char *name; +} stmfp_base = { + .mfp = &st_mfp, + .int_mask = 0x0, + .handler_irq = IRQ_MFP_TIMD, + .mfptimer_irq = IRQ_MFP_TIMER1, + .name = "MFP Timer D" +}; + +static irqreturn_t mfp_timer_d_handler(int irq, void *dev_id) +{ + struct mfptimerbase *base = dev_id; + int mach_irq; + unsigned char ints; + + mach_irq = base->mfptimer_irq; + ints = base->int_mask; + for (; ints; mach_irq++, ints >>= 1) { + if (ints & 1) + generic_handle_irq(mach_irq); + } + return IRQ_HANDLED; +} + + +static void atari_mfptimer_enable(struct irq_data *data) +{ + int mfp_num = data->irq - IRQ_MFP_TIMER1; + stmfp_base.int_mask |= 1 << mfp_num; + atari_enable_irq(IRQ_MFP_TIMD); +} + +static void atari_mfptimer_disable(struct irq_data *data) +{ + int mfp_num = data->irq - IRQ_MFP_TIMER1; + stmfp_base.int_mask &= ~(1 << mfp_num); + if (!stmfp_base.int_mask) + atari_disable_irq(IRQ_MFP_TIMD); +} + +static struct irq_chip atari_mfptimer_chip = { + .name = "timer_d", + .irq_enable = atari_mfptimer_enable, + .irq_disable = atari_mfptimer_disable, +}; + + +/* + * EtherNAT CPLD interrupt handling + * CPLD interrupt register is at phys. 0x80000023 + * Need this mapped in at interrupt startup time + * Possibly need this mapped on demand anyway - + * EtherNAT USB driver needs to disable IRQ before + * startup! + */ + +static unsigned char *enat_cpld; + +static unsigned int atari_ethernat_startup(struct irq_data *data) +{ + int enat_num = 140 - data->irq + 1; + + m68k_irq_startup(data); + /* + * map CPLD interrupt register + */ + if (!enat_cpld) + enat_cpld = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0x2); + /* + * do _not_ enable the USB chip interrupt here - causes interrupt storm + * and triggers dead interrupt watchdog + * Need to reset the USB chip to a sane state in early startup before + * removing this hack + */ + if (enat_num == 1) + *enat_cpld |= 1 << enat_num; + + return 0; +} + +static void atari_ethernat_enable(struct irq_data *data) +{ + int enat_num = 140 - data->irq + 1; + /* + * map CPLD interrupt register + */ + if (!enat_cpld) + enat_cpld = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0x2); + *enat_cpld |= 1 << enat_num; +} + +static void atari_ethernat_disable(struct irq_data *data) +{ + int enat_num = 140 - data->irq + 1; + /* + * map CPLD interrupt register + */ + if (!enat_cpld) + enat_cpld = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0x2); + *enat_cpld &= ~(1 << enat_num); +} + +static void atari_ethernat_shutdown(struct irq_data *data) +{ + int enat_num = 140 - data->irq + 1; + if (enat_cpld) { + *enat_cpld &= ~(1 << enat_num); + iounmap(enat_cpld); + enat_cpld = NULL; + } +} + +static struct irq_chip atari_ethernat_chip = { + .name = "ethernat", + .irq_startup = atari_ethernat_startup, + .irq_shutdown = atari_ethernat_shutdown, + .irq_enable = atari_ethernat_enable, + .irq_disable = atari_ethernat_disable, +}; + +/* + * void atari_init_IRQ (void) + * + * Parameters: None + * + * Returns: Nothing + * + * This function should be called during kernel startup to initialize + * the atari IRQ handling routines. + */ + +void __init atari_init_IRQ(void) +{ + m68k_setup_user_interrupt(VEC_USER, NUM_ATARI_SOURCES - IRQ_USER); + m68k_setup_irq_controller(&atari_irq_chip, handle_simple_irq, 1, + NUM_ATARI_SOURCES - 1); + + /* Initialize the MFP(s) */ + +#ifdef ATARI_USE_SOFTWARE_EOI + st_mfp.vec_adr = 0x48; /* Software EOI-Mode */ +#else + st_mfp.vec_adr = 0x40; /* Automatic EOI-Mode */ +#endif + st_mfp.int_en_a = 0x00; /* turn off MFP-Ints */ + st_mfp.int_en_b = 0x00; + st_mfp.int_mk_a = 0xff; /* no Masking */ + st_mfp.int_mk_b = 0xff; + + if (ATARIHW_PRESENT(TT_MFP)) { +#ifdef ATARI_USE_SOFTWARE_EOI + tt_mfp.vec_adr = 0x58; /* Software EOI-Mode */ +#else + tt_mfp.vec_adr = 0x50; /* Automatic EOI-Mode */ +#endif + tt_mfp.int_en_a = 0x00; /* turn off MFP-Ints */ + tt_mfp.int_en_b = 0x00; + tt_mfp.int_mk_a = 0xff; /* no Masking */ + tt_mfp.int_mk_b = 0xff; + } + + if (ATARIHW_PRESENT(SCC) && !atari_SCC_reset_done) { + atari_scc.cha_a_ctrl = 9; + MFPDELAY(); + atari_scc.cha_a_ctrl = (char) 0xc0; /* hardware reset */ + } + + if (ATARIHW_PRESENT(SCU)) { + /* init the SCU if present */ + tt_scu.sys_mask = 0x10; /* enable VBL (for the cursor) and + * disable HSYNC interrupts (who + * needs them?) MFP and SCC are + * enabled in VME mask + */ + tt_scu.vme_mask = 0x60; /* enable MFP and SCC ints */ + } else { + /* If no SCU and no Hades, the HSYNC interrupt needs to be + * disabled this way. (Else _inthandler in kernel/sys_call.S + * gets overruns) + */ + + vectors[VEC_INT2] = falcon_hblhandler; + vectors[VEC_INT4] = falcon_hblhandler; + } + + if (ATARIHW_PRESENT(PCM_8BIT) && ATARIHW_PRESENT(MICROWIRE)) { + /* Initialize the LM1992 Sound Controller to enable + the PSG sound. This is misplaced here, it should + be in an atasound_init(), that doesn't exist yet. */ + atari_microwire_cmd(MW_LM1992_PSG_HIGH); + } + + stdma_init(); + + /* Initialize the PSG: all sounds off, both ports output */ + sound_ym.rd_data_reg_sel = 7; + sound_ym.wd_data = 0xff; + + m68k_setup_irq_controller(&atari_mfptimer_chip, handle_simple_irq, + IRQ_MFP_TIMER1, 8); + + irq_set_status_flags(IRQ_MFP_TIMER1, IRQ_IS_POLLED); + irq_set_status_flags(IRQ_MFP_TIMER2, IRQ_IS_POLLED); + + /* prepare timer D data for use as poll interrupt */ + /* set Timer D data Register - needs to be > 0 */ + st_mfp.tim_dt_d = 254; /* < 100 Hz */ + /* start timer D, div = 1:100 */ + st_mfp.tim_ct_cd = (st_mfp.tim_ct_cd & 0xf0) | 0x6; + + /* request timer D dispatch handler */ + if (request_irq(IRQ_MFP_TIMD, mfp_timer_d_handler, IRQF_SHARED, + stmfp_base.name, &stmfp_base)) + pr_err("Couldn't register %s interrupt\n", stmfp_base.name); + + /* + * EtherNAT ethernet / USB interrupt handlers + */ + + m68k_setup_irq_controller(&atari_ethernat_chip, handle_simple_irq, + 139, 2); +} + + +/* + * atari_register_vme_int() returns the number of a free interrupt vector for + * hardware with a programmable int vector (probably a VME board). + */ + +unsigned int atari_register_vme_int(void) +{ + int i; + + for (i = 0; i < 32; i++) + if ((free_vme_vec_bitmap & (1 << i)) == 0) + break; + + if (i == 16) + return 0; + + free_vme_vec_bitmap |= 1 << i; + return VME_SOURCE_BASE + i; +} +EXPORT_SYMBOL(atari_register_vme_int); + + +void atari_unregister_vme_int(unsigned int irq) +{ + if (irq >= VME_SOURCE_BASE && irq < VME_SOURCE_BASE + VME_MAX_SOURCES) { + irq -= VME_SOURCE_BASE; + free_vme_vec_bitmap &= ~(1 << irq); + } +} +EXPORT_SYMBOL(atari_unregister_vme_int); + + |