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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/gpu/drm/nouveau/nvkm/engine/falcon.c
downloadlinux-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 'drivers/gpu/drm/nouveau/nvkm/engine/falcon.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/engine/falcon.c355
1 files changed, 355 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/falcon.c b/drivers/gpu/drm/nouveau/nvkm/engine/falcon.c
new file mode 100644
index 000000000..d619b40a4
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/falcon.c
@@ -0,0 +1,355 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <engine/falcon.h>
+
+#include <core/gpuobj.h>
+#include <subdev/mc.h>
+#include <subdev/timer.h>
+#include <engine/fifo.h>
+
+static int
+nvkm_falcon_oclass_get(struct nvkm_oclass *oclass, int index)
+{
+ struct nvkm_falcon *falcon = nvkm_falcon(oclass->engine);
+ int c = 0;
+
+ while (falcon->func->sclass[c].oclass) {
+ if (c++ == index) {
+ oclass->base = falcon->func->sclass[index];
+ return index;
+ }
+ }
+
+ return c;
+}
+
+static int
+nvkm_falcon_cclass_bind(struct nvkm_object *object, struct nvkm_gpuobj *parent,
+ int align, struct nvkm_gpuobj **pgpuobj)
+{
+ return nvkm_gpuobj_new(object->engine->subdev.device, 256,
+ align, true, parent, pgpuobj);
+}
+
+static const struct nvkm_object_func
+nvkm_falcon_cclass = {
+ .bind = nvkm_falcon_cclass_bind,
+};
+
+static void
+nvkm_falcon_intr(struct nvkm_engine *engine)
+{
+ struct nvkm_falcon *falcon = nvkm_falcon(engine);
+ struct nvkm_subdev *subdev = &falcon->engine.subdev;
+ struct nvkm_device *device = subdev->device;
+ const u32 base = falcon->addr;
+ u32 dest = nvkm_rd32(device, base + 0x01c);
+ u32 intr = nvkm_rd32(device, base + 0x008) & dest & ~(dest >> 16);
+ u32 inst = nvkm_rd32(device, base + 0x050) & 0x3fffffff;
+ struct nvkm_chan *chan;
+ unsigned long flags;
+
+ chan = nvkm_chan_get_inst(engine, (u64)inst << 12, &flags);
+
+ if (intr & 0x00000040) {
+ if (falcon->func->intr) {
+ falcon->func->intr(falcon, chan);
+ nvkm_wr32(device, base + 0x004, 0x00000040);
+ intr &= ~0x00000040;
+ }
+ }
+
+ if (intr & 0x00000010) {
+ nvkm_debug(subdev, "ucode halted\n");
+ nvkm_wr32(device, base + 0x004, 0x00000010);
+ intr &= ~0x00000010;
+ }
+
+ if (intr) {
+ nvkm_error(subdev, "intr %08x\n", intr);
+ nvkm_wr32(device, base + 0x004, intr);
+ }
+
+ nvkm_chan_put(&chan, flags);
+}
+
+static int
+nvkm_falcon_fini(struct nvkm_engine *engine, bool suspend)
+{
+ struct nvkm_falcon *falcon = nvkm_falcon(engine);
+ struct nvkm_device *device = falcon->engine.subdev.device;
+ const u32 base = falcon->addr;
+
+ if (!suspend) {
+ nvkm_memory_unref(&falcon->core);
+ if (falcon->external) {
+ vfree(falcon->data.data);
+ vfree(falcon->code.data);
+ falcon->code.data = NULL;
+ }
+ }
+
+ if (nvkm_mc_enabled(device, engine->subdev.type, engine->subdev.inst)) {
+ nvkm_mask(device, base + 0x048, 0x00000003, 0x00000000);
+ nvkm_wr32(device, base + 0x014, 0xffffffff);
+ }
+ return 0;
+}
+
+static void *
+vmemdup(const void *src, size_t len)
+{
+ void *p = vmalloc(len);
+
+ if (p)
+ memcpy(p, src, len);
+ return p;
+}
+
+static int
+nvkm_falcon_oneinit(struct nvkm_engine *engine)
+{
+ struct nvkm_falcon *falcon = nvkm_falcon(engine);
+ struct nvkm_subdev *subdev = &falcon->engine.subdev;
+ struct nvkm_device *device = subdev->device;
+ const u32 base = falcon->addr;
+ u32 caps;
+
+ /* determine falcon capabilities */
+ if (device->chipset < 0xa3 ||
+ device->chipset == 0xaa || device->chipset == 0xac) {
+ falcon->version = 0;
+ falcon->secret = (falcon->addr == 0x087000) ? 1 : 0;
+ } else {
+ caps = nvkm_rd32(device, base + 0x12c);
+ falcon->version = (caps & 0x0000000f);
+ falcon->secret = (caps & 0x00000030) >> 4;
+ }
+
+ caps = nvkm_rd32(device, base + 0x108);
+ falcon->code.limit = (caps & 0x000001ff) << 8;
+ falcon->data.limit = (caps & 0x0003fe00) >> 1;
+
+ nvkm_debug(subdev, "falcon version: %d\n", falcon->version);
+ nvkm_debug(subdev, "secret level: %d\n", falcon->secret);
+ nvkm_debug(subdev, "code limit: %d\n", falcon->code.limit);
+ nvkm_debug(subdev, "data limit: %d\n", falcon->data.limit);
+ return 0;
+}
+
+static int
+nvkm_falcon_init(struct nvkm_engine *engine)
+{
+ struct nvkm_falcon *falcon = nvkm_falcon(engine);
+ struct nvkm_subdev *subdev = &falcon->engine.subdev;
+ struct nvkm_device *device = subdev->device;
+ const struct firmware *fw;
+ char name[32] = "internal";
+ const u32 base = falcon->addr;
+ int ret, i;
+
+ /* wait for 'uc halted' to be signalled before continuing */
+ if (falcon->secret && falcon->version < 4) {
+ if (!falcon->version) {
+ nvkm_msec(device, 2000,
+ if (nvkm_rd32(device, base + 0x008) & 0x00000010)
+ break;
+ );
+ } else {
+ nvkm_msec(device, 2000,
+ if (!(nvkm_rd32(device, base + 0x180) & 0x80000000))
+ break;
+ );
+ }
+ nvkm_wr32(device, base + 0x004, 0x00000010);
+ }
+
+ /* disable all interrupts */
+ nvkm_wr32(device, base + 0x014, 0xffffffff);
+
+ /* no default ucode provided by the engine implementation, try and
+ * locate a "self-bootstrapping" firmware image for the engine
+ */
+ if (!falcon->code.data) {
+ snprintf(name, sizeof(name), "nouveau/nv%02x_fuc%03x",
+ device->chipset, falcon->addr >> 12);
+
+ ret = request_firmware(&fw, name, device->dev);
+ if (ret == 0) {
+ falcon->code.data = vmemdup(fw->data, fw->size);
+ falcon->code.size = fw->size;
+ falcon->data.data = NULL;
+ falcon->data.size = 0;
+ release_firmware(fw);
+ }
+
+ falcon->external = true;
+ }
+
+ /* next step is to try and load "static code/data segment" firmware
+ * images for the engine
+ */
+ if (!falcon->code.data) {
+ snprintf(name, sizeof(name), "nouveau/nv%02x_fuc%03xd",
+ device->chipset, falcon->addr >> 12);
+
+ ret = request_firmware(&fw, name, device->dev);
+ if (ret) {
+ nvkm_error(subdev, "unable to load firmware data\n");
+ return -ENODEV;
+ }
+
+ falcon->data.data = vmemdup(fw->data, fw->size);
+ falcon->data.size = fw->size;
+ release_firmware(fw);
+ if (!falcon->data.data)
+ return -ENOMEM;
+
+ snprintf(name, sizeof(name), "nouveau/nv%02x_fuc%03xc",
+ device->chipset, falcon->addr >> 12);
+
+ ret = request_firmware(&fw, name, device->dev);
+ if (ret) {
+ nvkm_error(subdev, "unable to load firmware code\n");
+ return -ENODEV;
+ }
+
+ falcon->code.data = vmemdup(fw->data, fw->size);
+ falcon->code.size = fw->size;
+ release_firmware(fw);
+ if (!falcon->code.data)
+ return -ENOMEM;
+ }
+
+ nvkm_debug(subdev, "firmware: %s (%s)\n", name, falcon->data.data ?
+ "static code/data segments" : "self-bootstrapping");
+
+ /* ensure any "self-bootstrapping" firmware image is in vram */
+ if (!falcon->data.data && !falcon->core) {
+ ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST,
+ falcon->code.size, 256, false,
+ &falcon->core);
+ if (ret) {
+ nvkm_error(subdev, "core allocation failed, %d\n", ret);
+ return ret;
+ }
+
+ nvkm_kmap(falcon->core);
+ for (i = 0; i < falcon->code.size; i += 4)
+ nvkm_wo32(falcon->core, i, falcon->code.data[i / 4]);
+ nvkm_done(falcon->core);
+ }
+
+ /* upload firmware bootloader (or the full code segments) */
+ if (falcon->core) {
+ u64 addr = nvkm_memory_addr(falcon->core);
+ if (device->card_type < NV_C0)
+ nvkm_wr32(device, base + 0x618, 0x04000000);
+ else
+ nvkm_wr32(device, base + 0x618, 0x00000114);
+ nvkm_wr32(device, base + 0x11c, 0);
+ nvkm_wr32(device, base + 0x110, addr >> 8);
+ nvkm_wr32(device, base + 0x114, 0);
+ nvkm_wr32(device, base + 0x118, 0x00006610);
+ } else {
+ if (falcon->code.size > falcon->code.limit ||
+ falcon->data.size > falcon->data.limit) {
+ nvkm_error(subdev, "ucode exceeds falcon limit(s)\n");
+ return -EINVAL;
+ }
+
+ if (falcon->version < 3) {
+ nvkm_wr32(device, base + 0xff8, 0x00100000);
+ for (i = 0; i < falcon->code.size / 4; i++)
+ nvkm_wr32(device, base + 0xff4, falcon->code.data[i]);
+ } else {
+ nvkm_wr32(device, base + 0x180, 0x01000000);
+ for (i = 0; i < falcon->code.size / 4; i++) {
+ if ((i & 0x3f) == 0)
+ nvkm_wr32(device, base + 0x188, i >> 6);
+ nvkm_wr32(device, base + 0x184, falcon->code.data[i]);
+ }
+ }
+ }
+
+ /* upload data segment (if necessary), zeroing the remainder */
+ if (falcon->version < 3) {
+ nvkm_wr32(device, base + 0xff8, 0x00000000);
+ for (i = 0; !falcon->core && i < falcon->data.size / 4; i++)
+ nvkm_wr32(device, base + 0xff4, falcon->data.data[i]);
+ for (; i < falcon->data.limit; i += 4)
+ nvkm_wr32(device, base + 0xff4, 0x00000000);
+ } else {
+ nvkm_wr32(device, base + 0x1c0, 0x01000000);
+ for (i = 0; !falcon->core && i < falcon->data.size / 4; i++)
+ nvkm_wr32(device, base + 0x1c4, falcon->data.data[i]);
+ for (; i < falcon->data.limit / 4; i++)
+ nvkm_wr32(device, base + 0x1c4, 0x00000000);
+ }
+
+ /* start it running */
+ nvkm_wr32(device, base + 0x10c, 0x00000001); /* BLOCK_ON_FIFO */
+ nvkm_wr32(device, base + 0x104, 0x00000000); /* ENTRY */
+ nvkm_wr32(device, base + 0x100, 0x00000002); /* TRIGGER */
+ nvkm_wr32(device, base + 0x048, 0x00000003); /* FIFO | CHSW */
+
+ if (falcon->func->init)
+ falcon->func->init(falcon);
+ return 0;
+}
+
+static void *
+nvkm_falcon_dtor(struct nvkm_engine *engine)
+{
+ return nvkm_falcon(engine);
+}
+
+static const struct nvkm_engine_func
+nvkm_falcon = {
+ .dtor = nvkm_falcon_dtor,
+ .oneinit = nvkm_falcon_oneinit,
+ .init = nvkm_falcon_init,
+ .fini = nvkm_falcon_fini,
+ .intr = nvkm_falcon_intr,
+ .fifo.sclass = nvkm_falcon_oclass_get,
+ .cclass = &nvkm_falcon_cclass,
+};
+
+int
+nvkm_falcon_new_(const struct nvkm_falcon_func *func, struct nvkm_device *device,
+ enum nvkm_subdev_type type, int inst, bool enable, u32 addr,
+ struct nvkm_engine **pengine)
+{
+ struct nvkm_falcon *falcon;
+
+ if (!(falcon = kzalloc(sizeof(*falcon), GFP_KERNEL)))
+ return -ENOMEM;
+ falcon->func = func;
+ falcon->addr = addr;
+ falcon->code.data = func->code.data;
+ falcon->code.size = func->code.size;
+ falcon->data.data = func->data.data;
+ falcon->data.size = func->data.size;
+ *pengine = &falcon->engine;
+
+ return nvkm_engine_ctor(&nvkm_falcon, device, type, inst, enable, &falcon->engine);
+}