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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/arm/mach-omap1/ams-delta-fiq-handler.S | |
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/arm/mach-omap1/ams-delta-fiq-handler.S')
-rw-r--r-- | arch/arm/mach-omap1/ams-delta-fiq-handler.S | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/arch/arm/mach-omap1/ams-delta-fiq-handler.S b/arch/arm/mach-omap1/ams-delta-fiq-handler.S new file mode 100644 index 000000000..35c2f9574 --- /dev/null +++ b/arch/arm/mach-omap1/ams-delta-fiq-handler.S @@ -0,0 +1,275 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * linux/arch/arm/mach-omap1/ams-delta-fiq-handler.S + * + * Based on linux/arch/arm/lib/floppydma.S + * Renamed and modified to work with 2.6 kernel by Matt Callow + * Copyright (C) 1995, 1996 Russell King + * Copyright (C) 2004 Pete Trapps + * Copyright (C) 2006 Matt Callow + * Copyright (C) 2010 Janusz Krzysztofik + */ + +#include <linux/linkage.h> +#include <linux/platform_data/ams-delta-fiq.h> +#include <linux/platform_data/gpio-omap.h> +#include <linux/soc/ti/omap1-io.h> + +#include <asm/assembler.h> +#include <asm/irq.h> + +#include "hardware.h" +#include "ams-delta-fiq.h" +#include "board-ams-delta.h" +#include "iomap.h" + +/* + * OMAP1510 GPIO related symbol copied from arch/arm/mach-omap1/gpio15xx.c. + * Unfortunately, it was not placed in a separate header file. + */ +#define OMAP1510_GPIO_BASE 0xFFFCE000 + +/* GPIO register bitmasks */ +#define KEYBRD_DATA_MASK (0x1 << AMS_DELTA_GPIO_PIN_KEYBRD_DATA) +#define KEYBRD_CLK_MASK (0x1 << AMS_DELTA_GPIO_PIN_KEYBRD_CLK) +#define MODEM_IRQ_MASK (0x1 << AMS_DELTA_GPIO_PIN_MODEM_IRQ) +#define HOOK_SWITCH_MASK (0x1 << AMS_DELTA_GPIO_PIN_HOOK_SWITCH) +#define OTHERS_MASK (MODEM_IRQ_MASK | HOOK_SWITCH_MASK) + +/* IRQ handler register bitmasks */ +#define DEFERRED_FIQ_MASK OMAP_IRQ_BIT(INT_DEFERRED_FIQ) +#define GPIO_BANK1_MASK OMAP_IRQ_BIT(INT_GPIO_BANK1) + +/* Driver buffer byte offsets */ +#define BUF_MASK (FIQ_MASK * 4) +#define BUF_STATE (FIQ_STATE * 4) +#define BUF_KEYS_CNT (FIQ_KEYS_CNT * 4) +#define BUF_TAIL_OFFSET (FIQ_TAIL_OFFSET * 4) +#define BUF_HEAD_OFFSET (FIQ_HEAD_OFFSET * 4) +#define BUF_BUF_LEN (FIQ_BUF_LEN * 4) +#define BUF_KEY (FIQ_KEY * 4) +#define BUF_MISSED_KEYS (FIQ_MISSED_KEYS * 4) +#define BUF_BUFFER_START (FIQ_BUFFER_START * 4) +#define BUF_GPIO_INT_MASK (FIQ_GPIO_INT_MASK * 4) +#define BUF_KEYS_HICNT (FIQ_KEYS_HICNT * 4) +#define BUF_IRQ_PEND (FIQ_IRQ_PEND * 4) +#define BUF_SIR_CODE_L1 (FIQ_SIR_CODE_L1 * 4) +#define BUF_SIR_CODE_L2 (IRQ_SIR_CODE_L2 * 4) +#define BUF_CNT_INT_00 (FIQ_CNT_INT_00 * 4) +#define BUF_CNT_INT_KEY (FIQ_CNT_INT_KEY * 4) +#define BUF_CNT_INT_MDM (FIQ_CNT_INT_MDM * 4) +#define BUF_CNT_INT_03 (FIQ_CNT_INT_03 * 4) +#define BUF_CNT_INT_HSW (FIQ_CNT_INT_HSW * 4) +#define BUF_CNT_INT_05 (FIQ_CNT_INT_05 * 4) +#define BUF_CNT_INT_06 (FIQ_CNT_INT_06 * 4) +#define BUF_CNT_INT_07 (FIQ_CNT_INT_07 * 4) +#define BUF_CNT_INT_08 (FIQ_CNT_INT_08 * 4) +#define BUF_CNT_INT_09 (FIQ_CNT_INT_09 * 4) +#define BUF_CNT_INT_10 (FIQ_CNT_INT_10 * 4) +#define BUF_CNT_INT_11 (FIQ_CNT_INT_11 * 4) +#define BUF_CNT_INT_12 (FIQ_CNT_INT_12 * 4) +#define BUF_CNT_INT_13 (FIQ_CNT_INT_13 * 4) +#define BUF_CNT_INT_14 (FIQ_CNT_INT_14 * 4) +#define BUF_CNT_INT_15 (FIQ_CNT_INT_15 * 4) +#define BUF_CIRC_BUFF (FIQ_CIRC_BUFF * 4) + + +/* + * Register usage + * r8 - temporary + * r9 - the driver buffer + * r10 - temporary + * r11 - interrupts mask + * r12 - base pointers + * r13 - interrupts status + */ + + .text + + .global qwerty_fiqin_end + +ENTRY(qwerty_fiqin_start) + @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ + @ FIQ intrrupt handler + ldr r12, omap_ih1_base @ set pointer to level1 handler + + ldr r11, [r12, #IRQ_MIR_REG_OFFSET] @ fetch interrupts mask + + ldr r13, [r12, #IRQ_ITR_REG_OFFSET] @ fetch interrupts status + bics r13, r13, r11 @ clear masked - any left? + beq exit @ none - spurious FIQ? exit + + ldr r10, [r12, #IRQ_SIR_FIQ_REG_OFFSET] @ get requested interrupt number + + mov r8, #2 @ reset FIQ agreement + str r8, [r12, #IRQ_CONTROL_REG_OFFSET] + + cmp r10, #(INT_GPIO_BANK1 - NR_IRQS_LEGACY) @ is it GPIO interrupt? + beq gpio @ yes - process it + + mov r8, #1 + orr r8, r11, r8, lsl r10 @ mask spurious interrupt + str r8, [r12, #IRQ_MIR_REG_OFFSET] +exit: + subs pc, lr, #4 @ return from FIQ + @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ + + + @@@@@@@@@@@@@@@@@@@@@@@@@@@ +gpio: @ GPIO bank interrupt handler + ldr r12, omap1510_gpio_base @ set base pointer to GPIO bank + + ldr r11, [r12, #OMAP1510_GPIO_INT_MASK] @ fetch GPIO interrupts mask +restart: + ldr r13, [r12, #OMAP1510_GPIO_INT_STATUS] @ fetch status bits + bics r13, r13, r11 @ clear masked - any left? + beq exit @ no - spurious interrupt? exit + + orr r11, r11, r13 @ mask all requested interrupts + str r11, [r12, #OMAP1510_GPIO_INT_MASK] + + str r13, [r12, #OMAP1510_GPIO_INT_STATUS] @ ack all requested interrupts + + ands r10, r13, #KEYBRD_CLK_MASK @ extract keyboard status - set? + beq hksw @ no - try next source + + + @@@@@@@@@@@@@@@@@@@@@@ + @ Keyboard clock FIQ mode interrupt handler + @ r10 now contains KEYBRD_CLK_MASK, use it + bic r11, r11, r10 @ unmask it + str r11, [r12, #OMAP1510_GPIO_INT_MASK] + + @ Process keyboard data + ldr r8, [r12, #OMAP1510_GPIO_DATA_INPUT] @ fetch GPIO input + + ldr r10, [r9, #BUF_STATE] @ fetch kbd interface state + cmp r10, #0 @ are we expecting start bit? + bne data @ no - go to data processing + + ands r8, r8, #KEYBRD_DATA_MASK @ check start bit - detected? + beq hksw @ no - try next source + + @ r8 contains KEYBRD_DATA_MASK, use it + str r8, [r9, #BUF_STATE] @ enter data processing state + @ r10 already contains 0, reuse it + str r10, [r9, #BUF_KEY] @ clear keycode + mov r10, #2 @ reset input bit mask + str r10, [r9, #BUF_MASK] + + @ Mask other GPIO line interrupts till key done + str r11, [r9, #BUF_GPIO_INT_MASK] @ save mask for later restore + mvn r11, #KEYBRD_CLK_MASK @ prepare all except kbd mask + str r11, [r12, #OMAP1510_GPIO_INT_MASK] @ store into the mask register + + b restart @ restart + +data: ldr r10, [r9, #BUF_MASK] @ fetch current input bit mask + + @ r8 still contains GPIO input bits + ands r8, r8, #KEYBRD_DATA_MASK @ is keyboard data line low? + ldreq r8, [r9, #BUF_KEY] @ yes - fetch collected so far, + orreq r8, r8, r10 @ set 1 at current mask position + streq r8, [r9, #BUF_KEY] @ and save back + + mov r10, r10, lsl #1 @ shift mask left + bics r10, r10, #0x800 @ have we got all the bits? + strne r10, [r9, #BUF_MASK] @ not yet - store the mask + bne restart @ and restart + + @ r10 already contains 0, reuse it + str r10, [r9, #BUF_STATE] @ reset state to start + + @ Key done - restore interrupt mask + ldr r10, [r9, #BUF_GPIO_INT_MASK] @ fetch saved mask + and r11, r11, r10 @ unmask all saved as unmasked + str r11, [r12, #OMAP1510_GPIO_INT_MASK] @ restore into the mask register + + @ Try appending the keycode to the circular buffer + ldr r10, [r9, #BUF_KEYS_CNT] @ get saved keystrokes count + ldr r8, [r9, #BUF_BUF_LEN] @ get buffer size + cmp r10, r8 @ is buffer full? + beq hksw @ yes - key lost, next source + + add r10, r10, #1 @ incremet keystrokes counter + str r10, [r9, #BUF_KEYS_CNT] + + ldr r10, [r9, #BUF_TAIL_OFFSET] @ get buffer tail offset + @ r8 already contains buffer size + cmp r10, r8 @ end of buffer? + moveq r10, #0 @ yes - rewind to buffer start + + ldr r12, [r9, #BUF_BUFFER_START] @ get buffer start address + add r12, r12, r10, LSL #2 @ calculate buffer tail address + ldr r8, [r9, #BUF_KEY] @ get last keycode + str r8, [r12] @ append it to the buffer tail + + add r10, r10, #1 @ increment buffer tail offset + str r10, [r9, #BUF_TAIL_OFFSET] + + ldr r10, [r9, #BUF_CNT_INT_KEY] @ increment interrupts counter + add r10, r10, #1 + str r10, [r9, #BUF_CNT_INT_KEY] + @@@@@@@@@@@@@@@@@@@@@@@@ + + +hksw: @Is hook switch interrupt requested? + tst r13, #HOOK_SWITCH_MASK @ is hook switch status bit set? + beq mdm @ no - try next source + + + @@@@@@@@@@@@@@@@@@@@@@@@ + @ Hook switch interrupt FIQ mode simple handler + + @ Don't toggle active edge, the switch always bounces + + @ Increment hook switch interrupt counter + ldr r10, [r9, #BUF_CNT_INT_HSW] + add r10, r10, #1 + str r10, [r9, #BUF_CNT_INT_HSW] + @@@@@@@@@@@@@@@@@@@@@@@@ + + +mdm: @Is it a modem interrupt? + tst r13, #MODEM_IRQ_MASK @ is modem status bit set? + beq irq @ no - check for next interrupt + + + @@@@@@@@@@@@@@@@@@@@@@@@ + @ Modem FIQ mode interrupt handler stub + + @ Increment modem interrupt counter + ldr r10, [r9, #BUF_CNT_INT_MDM] + add r10, r10, #1 + str r10, [r9, #BUF_CNT_INT_MDM] + @@@@@@@@@@@@@@@@@@@@@@@@ + + +irq: @ Place deferred_fiq interrupt request + ldr r12, deferred_fiq_ih_base @ set pointer to IRQ handler + mov r10, #DEFERRED_FIQ_MASK @ set deferred_fiq bit + str r10, [r12, #IRQ_ISR_REG_OFFSET] @ place it in the ISR register + + ldr r12, omap1510_gpio_base @ set pointer back to GPIO bank + b restart @ check for next GPIO interrupt + @@@@@@@@@@@@@@@@@@@@@@@@@@@ + + +/* + * Virtual addresses for IO + */ +omap_ih1_base: + .word OMAP1_IO_ADDRESS(OMAP_IH1_BASE) +deferred_fiq_ih_base: + .word OMAP1_IO_ADDRESS(DEFERRED_FIQ_IH_BASE) +omap1510_gpio_base: + .word OMAP1_IO_ADDRESS(OMAP1510_GPIO_BASE) +qwerty_fiqin_end: + +/* + * Check the size of the FIQ, + * it cannot go beyond 0xffff0200, and is copied to 0xffff001c + */ +.if (qwerty_fiqin_end - qwerty_fiqin_start) > (0x200 - 0x1c) + .err +.endif |