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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-omap2/pm33xx-core.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/arm/mach-omap2/pm33xx-core.c')
-rw-r--r-- | arch/arm/mach-omap2/pm33xx-core.c | 442 |
1 files changed, 442 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/pm33xx-core.c b/arch/arm/mach-omap2/pm33xx-core.c new file mode 100644 index 000000000..711bcc6c8 --- /dev/null +++ b/arch/arm/mach-omap2/pm33xx-core.c @@ -0,0 +1,442 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * AM33XX Arch Power Management Routines + * + * Copyright (C) 2016-2018 Texas Instruments Incorporated - https://www.ti.com/ + * Dave Gerlach + */ + +#include <linux/cpuidle.h> +#include <linux/platform_data/pm33xx.h> +#include <linux/suspend.h> +#include <asm/cpuidle.h> +#include <asm/smp_scu.h> +#include <asm/suspend.h> +#include <linux/errno.h> +#include <linux/clk.h> +#include <linux/cpu.h> +#include <linux/platform_data/gpio-omap.h> +#include <linux/wkup_m3_ipc.h> +#include <linux/of.h> +#include <linux/rtc.h> + +#include "cm33xx.h" +#include "common.h" +#include "control.h" +#include "clockdomain.h" +#include "iomap.h" +#include "pm.h" +#include "powerdomain.h" +#include "prm33xx.h" +#include "soc.h" +#include "sram.h" +#include "omap-secure.h" + +static struct powerdomain *cefuse_pwrdm, *gfx_pwrdm, *per_pwrdm, *mpu_pwrdm; +static struct clockdomain *gfx_l4ls_clkdm; +static void __iomem *scu_base; + +static int (*idle_fn)(u32 wfi_flags); + +struct amx3_idle_state { + int wfi_flags; +}; + +static struct amx3_idle_state *idle_states; + +static int am43xx_map_scu(void) +{ + scu_base = ioremap(scu_a9_get_base(), SZ_256); + + if (!scu_base) + return -ENOMEM; + + return 0; +} + +static int am33xx_check_off_mode_enable(void) +{ + if (enable_off_mode) + pr_warn("WARNING: This platform does not support off-mode, entering DeepSleep suspend.\n"); + + /* off mode not supported on am335x so return 0 always */ + return 0; +} + +static int am43xx_check_off_mode_enable(void) +{ + /* + * Check for am437x-gp-evm which has the right Hardware design to + * support this mode reliably. + */ + if (of_machine_is_compatible("ti,am437x-gp-evm") && enable_off_mode) + return enable_off_mode; + else if (enable_off_mode) + pr_warn("WARNING: This platform does not support off-mode, entering DeepSleep suspend.\n"); + + return 0; +} + +static int amx3_common_init(int (*idle)(u32 wfi_flags)) +{ + gfx_pwrdm = pwrdm_lookup("gfx_pwrdm"); + per_pwrdm = pwrdm_lookup("per_pwrdm"); + mpu_pwrdm = pwrdm_lookup("mpu_pwrdm"); + + if ((!gfx_pwrdm) || (!per_pwrdm) || (!mpu_pwrdm)) + return -ENODEV; + + (void)clkdm_for_each(omap_pm_clkdms_setup, NULL); + + /* CEFUSE domain can be turned off post bootup */ + cefuse_pwrdm = pwrdm_lookup("cefuse_pwrdm"); + if (!cefuse_pwrdm) + pr_err("PM: Failed to get cefuse_pwrdm\n"); + else if (omap_type() != OMAP2_DEVICE_TYPE_GP) + pr_info("PM: Leaving EFUSE power domain active\n"); + else + omap_set_pwrdm_state(cefuse_pwrdm, PWRDM_POWER_OFF); + + idle_fn = idle; + + return 0; +} + +static int am33xx_suspend_init(int (*idle)(u32 wfi_flags)) +{ + int ret; + + gfx_l4ls_clkdm = clkdm_lookup("gfx_l4ls_gfx_clkdm"); + + if (!gfx_l4ls_clkdm) { + pr_err("PM: Cannot lookup gfx_l4ls_clkdm clockdomains\n"); + return -ENODEV; + } + + ret = amx3_common_init(idle); + + return ret; +} + +static int am43xx_suspend_init(int (*idle)(u32 wfi_flags)) +{ + int ret = 0; + + ret = am43xx_map_scu(); + if (ret) { + pr_err("PM: Could not ioremap SCU\n"); + return ret; + } + + ret = amx3_common_init(idle); + + return ret; +} + +static int amx3_suspend_deinit(void) +{ + idle_fn = NULL; + return 0; +} + +static void amx3_pre_suspend_common(void) +{ + omap_set_pwrdm_state(gfx_pwrdm, PWRDM_POWER_OFF); +} + +static void amx3_post_suspend_common(void) +{ + int status; + /* + * Because gfx_pwrdm is the only one under MPU control, + * comment on transition status + */ + status = pwrdm_read_pwrst(gfx_pwrdm); + if (status != PWRDM_POWER_OFF) + pr_err("PM: GFX domain did not transition: %x\n", status); +} + +static int am33xx_suspend(unsigned int state, int (*fn)(unsigned long), + unsigned long args) +{ + int ret = 0; + + amx3_pre_suspend_common(); + ret = cpu_suspend(args, fn); + amx3_post_suspend_common(); + + /* + * BUG: GFX_L4LS clock domain needs to be woken up to + * ensure thet L4LS clock domain does not get stuck in + * transition. If that happens L3 module does not get + * disabled, thereby leading to PER power domain + * transition failing + */ + + clkdm_wakeup(gfx_l4ls_clkdm); + clkdm_sleep(gfx_l4ls_clkdm); + + return ret; +} + +static int am43xx_suspend(unsigned int state, int (*fn)(unsigned long), + unsigned long args) +{ + int ret = 0; + + /* Suspend secure side on HS devices */ + if (omap_type() != OMAP2_DEVICE_TYPE_GP) { + if (optee_available) + omap_smccc_smc(AM43xx_PPA_SVC_PM_SUSPEND, 0); + else + omap_secure_dispatcher(AM43xx_PPA_SVC_PM_SUSPEND, + FLAG_START_CRITICAL, + 0, 0, 0, 0, 0); + } + + amx3_pre_suspend_common(); + scu_power_mode(scu_base, SCU_PM_POWEROFF); + ret = cpu_suspend(args, fn); + scu_power_mode(scu_base, SCU_PM_NORMAL); + + if (!am43xx_check_off_mode_enable()) + amx3_post_suspend_common(); + + /* + * Resume secure side on HS devices. + * + * Note that even on systems with OP-TEE available this resume call is + * issued to the ROM. This is because upon waking from suspend the ROM + * is restored as the secure monitor. On systems with OP-TEE ROM will + * restore OP-TEE during this call. + */ + if (omap_type() != OMAP2_DEVICE_TYPE_GP) + omap_secure_dispatcher(AM43xx_PPA_SVC_PM_RESUME, + FLAG_START_CRITICAL, + 0, 0, 0, 0, 0); + + return ret; +} + +static int am33xx_cpu_suspend(int (*fn)(unsigned long), unsigned long args) +{ + int ret = 0; + + if (omap_irq_pending() || need_resched()) + return ret; + + ret = cpu_suspend(args, fn); + + return ret; +} + +static int am43xx_cpu_suspend(int (*fn)(unsigned long), unsigned long args) +{ + int ret = 0; + + if (!scu_base) + return 0; + + scu_power_mode(scu_base, SCU_PM_DORMANT); + ret = cpu_suspend(args, fn); + scu_power_mode(scu_base, SCU_PM_NORMAL); + + return ret; +} + +static void amx3_begin_suspend(void) +{ + cpu_idle_poll_ctrl(true); +} + +static void amx3_finish_suspend(void) +{ + cpu_idle_poll_ctrl(false); +} + + +static struct am33xx_pm_sram_addr *amx3_get_sram_addrs(void) +{ + if (soc_is_am33xx()) + return &am33xx_pm_sram; + else if (soc_is_am437x()) + return &am43xx_pm_sram; + else + return NULL; +} + +static void am43xx_save_context(void) +{ +} + +static void am33xx_save_context(void) +{ + omap_intc_save_context(); +} + +static void am33xx_restore_context(void) +{ + omap_intc_restore_context(); +} + +static void am43xx_restore_context(void) +{ + /* + * HACK: restore dpll_per_clkdcoldo register contents, to avoid + * breaking suspend-resume + */ + writel_relaxed(0x0, AM33XX_L4_WK_IO_ADDRESS(0x44df2e14)); +} + +static struct am33xx_pm_platform_data am33xx_ops = { + .init = am33xx_suspend_init, + .deinit = amx3_suspend_deinit, + .soc_suspend = am33xx_suspend, + .cpu_suspend = am33xx_cpu_suspend, + .begin_suspend = amx3_begin_suspend, + .finish_suspend = amx3_finish_suspend, + .get_sram_addrs = amx3_get_sram_addrs, + .save_context = am33xx_save_context, + .restore_context = am33xx_restore_context, + .check_off_mode_enable = am33xx_check_off_mode_enable, +}; + +static struct am33xx_pm_platform_data am43xx_ops = { + .init = am43xx_suspend_init, + .deinit = amx3_suspend_deinit, + .soc_suspend = am43xx_suspend, + .cpu_suspend = am43xx_cpu_suspend, + .begin_suspend = amx3_begin_suspend, + .finish_suspend = amx3_finish_suspend, + .get_sram_addrs = amx3_get_sram_addrs, + .save_context = am43xx_save_context, + .restore_context = am43xx_restore_context, + .check_off_mode_enable = am43xx_check_off_mode_enable, +}; + +static struct am33xx_pm_platform_data *am33xx_pm_get_pdata(void) +{ + if (soc_is_am33xx()) + return &am33xx_ops; + else if (soc_is_am437x()) + return &am43xx_ops; + else + return NULL; +} + +#ifdef CONFIG_SUSPEND +/* + * Block system suspend initially. Later on pm33xx sets up it's own + * platform_suspend_ops after probe. That depends also on loaded + * wkup_m3_ipc and booted am335x-pm-firmware.elf. + */ +static int amx3_suspend_block(suspend_state_t state) +{ + pr_warn("PM not initialized for pm33xx, wkup_m3_ipc, or am335x-pm-firmware.elf\n"); + + return -EINVAL; +} + +static int amx3_pm_valid(suspend_state_t state) +{ + switch (state) { + case PM_SUSPEND_STANDBY: + return 1; + default: + return 0; + } +} + +static const struct platform_suspend_ops amx3_blocked_pm_ops = { + .begin = amx3_suspend_block, + .valid = amx3_pm_valid, +}; + +static void __init amx3_block_suspend(void) +{ + suspend_set_ops(&amx3_blocked_pm_ops); +} +#else +static inline void amx3_block_suspend(void) +{ +} +#endif /* CONFIG_SUSPEND */ + +int __init amx3_common_pm_init(void) +{ + struct am33xx_pm_platform_data *pdata; + struct platform_device_info devinfo; + + pdata = am33xx_pm_get_pdata(); + + memset(&devinfo, 0, sizeof(devinfo)); + devinfo.name = "pm33xx"; + devinfo.data = pdata; + devinfo.size_data = sizeof(*pdata); + devinfo.id = -1; + platform_device_register_full(&devinfo); + amx3_block_suspend(); + + return 0; +} + +static int __init amx3_idle_init(struct device_node *cpu_node, int cpu) +{ + struct device_node *state_node; + struct amx3_idle_state states[CPUIDLE_STATE_MAX]; + int i; + int state_count = 1; + + for (i = 0; ; i++) { + state_node = of_parse_phandle(cpu_node, "cpu-idle-states", i); + if (!state_node) + break; + + if (!of_device_is_available(state_node)) + continue; + + if (i == CPUIDLE_STATE_MAX) { + pr_warn("%s: cpuidle states reached max possible\n", + __func__); + break; + } + + states[state_count].wfi_flags = 0; + + if (of_property_read_bool(state_node, "ti,idle-wkup-m3")) + states[state_count].wfi_flags |= WFI_FLAG_WAKE_M3 | + WFI_FLAG_FLUSH_CACHE; + + state_count++; + } + + idle_states = kcalloc(state_count, sizeof(*idle_states), GFP_KERNEL); + if (!idle_states) + return -ENOMEM; + + for (i = 1; i < state_count; i++) + idle_states[i].wfi_flags = states[i].wfi_flags; + + return 0; +} + +static int amx3_idle_enter(unsigned long index) +{ + struct amx3_idle_state *idle_state = &idle_states[index]; + + if (!idle_state) + return -EINVAL; + + if (idle_fn) + idle_fn(idle_state->wfi_flags); + + return 0; +} + +static struct cpuidle_ops amx3_cpuidle_ops __initdata = { + .init = amx3_idle_init, + .suspend = amx3_idle_enter, +}; + +CPUIDLE_METHOD_OF_DECLARE(pm33xx_idle, "ti,am3352", &amx3_cpuidle_ops); +CPUIDLE_METHOD_OF_DECLARE(pm43xx_idle, "ti,am4372", &amx3_cpuidle_ops); |