From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- drivers/gpu/drm/amd/amdgpu/cz_ih.c | 451 +++++++++++++++++++++++++++++++++++++ 1 file changed, 451 insertions(+) create mode 100644 drivers/gpu/drm/amd/amdgpu/cz_ih.c (limited to 'drivers/gpu/drm/amd/amdgpu/cz_ih.c') diff --git a/drivers/gpu/drm/amd/amdgpu/cz_ih.c b/drivers/gpu/drm/amd/amdgpu/cz_ih.c new file mode 100644 index 000000000..b8c47e0cf --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/cz_ih.c @@ -0,0 +1,451 @@ +/* + * Copyright 2014 Advanced Micro Devices, 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 + +#include "amdgpu.h" +#include "amdgpu_ih.h" +#include "vid.h" + +#include "oss/oss_3_0_1_d.h" +#include "oss/oss_3_0_1_sh_mask.h" + +#include "bif/bif_5_1_d.h" +#include "bif/bif_5_1_sh_mask.h" + +/* + * Interrupts + * Starting with r6xx, interrupts are handled via a ring buffer. + * Ring buffers are areas of GPU accessible memory that the GPU + * writes interrupt vectors into and the host reads vectors out of. + * There is a rptr (read pointer) that determines where the + * host is currently reading, and a wptr (write pointer) + * which determines where the GPU has written. When the + * pointers are equal, the ring is idle. When the GPU + * writes vectors to the ring buffer, it increments the + * wptr. When there is an interrupt, the host then starts + * fetching commands and processing them until the pointers are + * equal again at which point it updates the rptr. + */ + +static void cz_ih_set_interrupt_funcs(struct amdgpu_device *adev); + +/** + * cz_ih_enable_interrupts - Enable the interrupt ring buffer + * + * @adev: amdgpu_device pointer + * + * Enable the interrupt ring buffer (VI). + */ +static void cz_ih_enable_interrupts(struct amdgpu_device *adev) +{ + u32 ih_cntl = RREG32(mmIH_CNTL); + u32 ih_rb_cntl = RREG32(mmIH_RB_CNTL); + + ih_cntl = REG_SET_FIELD(ih_cntl, IH_CNTL, ENABLE_INTR, 1); + ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 1); + WREG32(mmIH_CNTL, ih_cntl); + WREG32(mmIH_RB_CNTL, ih_rb_cntl); + adev->irq.ih.enabled = true; +} + +/** + * cz_ih_disable_interrupts - Disable the interrupt ring buffer + * + * @adev: amdgpu_device pointer + * + * Disable the interrupt ring buffer (VI). + */ +static void cz_ih_disable_interrupts(struct amdgpu_device *adev) +{ + u32 ih_rb_cntl = RREG32(mmIH_RB_CNTL); + u32 ih_cntl = RREG32(mmIH_CNTL); + + ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_ENABLE, 0); + ih_cntl = REG_SET_FIELD(ih_cntl, IH_CNTL, ENABLE_INTR, 0); + WREG32(mmIH_RB_CNTL, ih_rb_cntl); + WREG32(mmIH_CNTL, ih_cntl); + /* set rptr, wptr to 0 */ + WREG32(mmIH_RB_RPTR, 0); + WREG32(mmIH_RB_WPTR, 0); + adev->irq.ih.enabled = false; + adev->irq.ih.rptr = 0; +} + +/** + * cz_ih_irq_init - init and enable the interrupt ring + * + * @adev: amdgpu_device pointer + * + * Allocate a ring buffer for the interrupt controller, + * enable the RLC, disable interrupts, enable the IH + * ring buffer and enable it (VI). + * Called at device load and reume. + * Returns 0 for success, errors for failure. + */ +static int cz_ih_irq_init(struct amdgpu_device *adev) +{ + struct amdgpu_ih_ring *ih = &adev->irq.ih; + u32 interrupt_cntl, ih_cntl, ih_rb_cntl; + int rb_bufsz; + + /* disable irqs */ + cz_ih_disable_interrupts(adev); + + /* setup interrupt control */ + WREG32(mmINTERRUPT_CNTL2, adev->dummy_page_addr >> 8); + interrupt_cntl = RREG32(mmINTERRUPT_CNTL); + /* INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=0 - dummy read disabled with msi, enabled without msi + * INTERRUPT_CNTL__IH_DUMMY_RD_OVERRIDE_MASK=1 - dummy read controlled by IH_DUMMY_RD_EN + */ + interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_DUMMY_RD_OVERRIDE, 0); + /* INTERRUPT_CNTL__IH_REQ_NONSNOOP_EN_MASK=1 if ring is in non-cacheable memory, e.g., vram */ + interrupt_cntl = REG_SET_FIELD(interrupt_cntl, INTERRUPT_CNTL, IH_REQ_NONSNOOP_EN, 0); + WREG32(mmINTERRUPT_CNTL, interrupt_cntl); + + /* Ring Buffer base. [39:8] of 40-bit address of the beginning of the ring buffer*/ + WREG32(mmIH_RB_BASE, adev->irq.ih.gpu_addr >> 8); + + rb_bufsz = order_base_2(adev->irq.ih.ring_size / 4); + ih_rb_cntl = REG_SET_FIELD(0, IH_RB_CNTL, WPTR_OVERFLOW_ENABLE, 1); + ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); + ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, RB_SIZE, rb_bufsz); + + /* Ring Buffer write pointer writeback. If enabled, IH_RB_WPTR register value is written to memory */ + ih_rb_cntl = REG_SET_FIELD(ih_rb_cntl, IH_RB_CNTL, WPTR_WRITEBACK_ENABLE, 1); + + /* set the writeback address whether it's enabled or not */ + WREG32(mmIH_RB_WPTR_ADDR_LO, lower_32_bits(ih->wptr_addr)); + WREG32(mmIH_RB_WPTR_ADDR_HI, upper_32_bits(ih->wptr_addr) & 0xFF); + + WREG32(mmIH_RB_CNTL, ih_rb_cntl); + + /* set rptr, wptr to 0 */ + WREG32(mmIH_RB_RPTR, 0); + WREG32(mmIH_RB_WPTR, 0); + + /* Default settings for IH_CNTL (disabled at first) */ + ih_cntl = RREG32(mmIH_CNTL); + ih_cntl = REG_SET_FIELD(ih_cntl, IH_CNTL, MC_VMID, 0); + + if (adev->irq.msi_enabled) + ih_cntl = REG_SET_FIELD(ih_cntl, IH_CNTL, RPTR_REARM, 1); + WREG32(mmIH_CNTL, ih_cntl); + + pci_set_master(adev->pdev); + + /* enable interrupts */ + cz_ih_enable_interrupts(adev); + + return 0; +} + +/** + * cz_ih_irq_disable - disable interrupts + * + * @adev: amdgpu_device pointer + * + * Disable interrupts on the hw (VI). + */ +static void cz_ih_irq_disable(struct amdgpu_device *adev) +{ + cz_ih_disable_interrupts(adev); + + /* Wait and acknowledge irq */ + mdelay(1); +} + +/** + * cz_ih_get_wptr - get the IH ring buffer wptr + * + * @adev: amdgpu_device pointer + * @ih: IH ring buffer to fetch wptr + * + * Get the IH ring buffer wptr from either the register + * or the writeback memory buffer (VI). Also check for + * ring buffer overflow and deal with it. + * Used by cz_irq_process(VI). + * Returns the value of the wptr. + */ +static u32 cz_ih_get_wptr(struct amdgpu_device *adev, + struct amdgpu_ih_ring *ih) +{ + u32 wptr, tmp; + + wptr = le32_to_cpu(*ih->wptr_cpu); + + if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) + goto out; + + /* Double check that the overflow wasn't already cleared. */ + wptr = RREG32(mmIH_RB_WPTR); + + if (!REG_GET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW)) + goto out; + + wptr = REG_SET_FIELD(wptr, IH_RB_WPTR, RB_OVERFLOW, 0); + + /* When a ring buffer overflow happen start parsing interrupt + * from the last not overwritten vector (wptr + 16). Hopefully + * this should allow us to catchup. + */ + dev_warn(adev->dev, "IH ring buffer overflow (0x%08X, 0x%08X, 0x%08X)\n", + wptr, ih->rptr, (wptr + 16) & ih->ptr_mask); + ih->rptr = (wptr + 16) & ih->ptr_mask; + tmp = RREG32(mmIH_RB_CNTL); + tmp = REG_SET_FIELD(tmp, IH_RB_CNTL, WPTR_OVERFLOW_CLEAR, 1); + WREG32(mmIH_RB_CNTL, tmp); + + +out: + return (wptr & ih->ptr_mask); +} + +/** + * cz_ih_decode_iv - decode an interrupt vector + * + * @adev: amdgpu_device pointer + * @ih: IH ring buffer to decode + * @entry: IV entry to place decoded information into + * + * Decodes the interrupt vector at the current rptr + * position and also advance the position. + */ +static void cz_ih_decode_iv(struct amdgpu_device *adev, + struct amdgpu_ih_ring *ih, + struct amdgpu_iv_entry *entry) +{ + /* wptr/rptr are in bytes! */ + u32 ring_index = ih->rptr >> 2; + uint32_t dw[4]; + + dw[0] = le32_to_cpu(ih->ring[ring_index + 0]); + dw[1] = le32_to_cpu(ih->ring[ring_index + 1]); + dw[2] = le32_to_cpu(ih->ring[ring_index + 2]); + dw[3] = le32_to_cpu(ih->ring[ring_index + 3]); + + entry->client_id = AMDGPU_IRQ_CLIENTID_LEGACY; + entry->src_id = dw[0] & 0xff; + entry->src_data[0] = dw[1] & 0xfffffff; + entry->ring_id = dw[2] & 0xff; + entry->vmid = (dw[2] >> 8) & 0xff; + entry->pasid = (dw[2] >> 16) & 0xffff; + + /* wptr/rptr are in bytes! */ + ih->rptr += 16; +} + +/** + * cz_ih_set_rptr - set the IH ring buffer rptr + * + * @adev: amdgpu_device pointer + * @ih: IH ring buffer to set rptr + * + * Set the IH ring buffer rptr. + */ +static void cz_ih_set_rptr(struct amdgpu_device *adev, + struct amdgpu_ih_ring *ih) +{ + WREG32(mmIH_RB_RPTR, ih->rptr); +} + +static int cz_ih_early_init(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + int ret; + + ret = amdgpu_irq_add_domain(adev); + if (ret) + return ret; + + cz_ih_set_interrupt_funcs(adev); + + return 0; +} + +static int cz_ih_sw_init(void *handle) +{ + int r; + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + r = amdgpu_ih_ring_init(adev, &adev->irq.ih, 64 * 1024, false); + if (r) + return r; + + r = amdgpu_irq_init(adev); + + return r; +} + +static int cz_ih_sw_fini(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + amdgpu_irq_fini_sw(adev); + amdgpu_irq_remove_domain(adev); + + return 0; +} + +static int cz_ih_hw_init(void *handle) +{ + int r; + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + r = cz_ih_irq_init(adev); + if (r) + return r; + + return 0; +} + +static int cz_ih_hw_fini(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + cz_ih_irq_disable(adev); + + return 0; +} + +static int cz_ih_suspend(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + return cz_ih_hw_fini(adev); +} + +static int cz_ih_resume(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + return cz_ih_hw_init(adev); +} + +static bool cz_ih_is_idle(void *handle) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + u32 tmp = RREG32(mmSRBM_STATUS); + + if (REG_GET_FIELD(tmp, SRBM_STATUS, IH_BUSY)) + return false; + + return true; +} + +static int cz_ih_wait_for_idle(void *handle) +{ + unsigned i; + u32 tmp; + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + + for (i = 0; i < adev->usec_timeout; i++) { + /* read MC_STATUS */ + tmp = RREG32(mmSRBM_STATUS); + if (!REG_GET_FIELD(tmp, SRBM_STATUS, IH_BUSY)) + return 0; + udelay(1); + } + return -ETIMEDOUT; +} + +static int cz_ih_soft_reset(void *handle) +{ + u32 srbm_soft_reset = 0; + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + u32 tmp = RREG32(mmSRBM_STATUS); + + if (tmp & SRBM_STATUS__IH_BUSY_MASK) + srbm_soft_reset = REG_SET_FIELD(srbm_soft_reset, SRBM_SOFT_RESET, + SOFT_RESET_IH, 1); + + if (srbm_soft_reset) { + tmp = RREG32(mmSRBM_SOFT_RESET); + tmp |= srbm_soft_reset; + dev_info(adev->dev, "SRBM_SOFT_RESET=0x%08X\n", tmp); + WREG32(mmSRBM_SOFT_RESET, tmp); + tmp = RREG32(mmSRBM_SOFT_RESET); + + udelay(50); + + tmp &= ~srbm_soft_reset; + WREG32(mmSRBM_SOFT_RESET, tmp); + tmp = RREG32(mmSRBM_SOFT_RESET); + + /* Wait a little for things to settle down */ + udelay(50); + } + + return 0; +} + +static int cz_ih_set_clockgating_state(void *handle, + enum amd_clockgating_state state) +{ + // TODO + return 0; +} + +static int cz_ih_set_powergating_state(void *handle, + enum amd_powergating_state state) +{ + // TODO + return 0; +} + +static const struct amd_ip_funcs cz_ih_ip_funcs = { + .name = "cz_ih", + .early_init = cz_ih_early_init, + .late_init = NULL, + .sw_init = cz_ih_sw_init, + .sw_fini = cz_ih_sw_fini, + .hw_init = cz_ih_hw_init, + .hw_fini = cz_ih_hw_fini, + .suspend = cz_ih_suspend, + .resume = cz_ih_resume, + .is_idle = cz_ih_is_idle, + .wait_for_idle = cz_ih_wait_for_idle, + .soft_reset = cz_ih_soft_reset, + .set_clockgating_state = cz_ih_set_clockgating_state, + .set_powergating_state = cz_ih_set_powergating_state, +}; + +static const struct amdgpu_ih_funcs cz_ih_funcs = { + .get_wptr = cz_ih_get_wptr, + .decode_iv = cz_ih_decode_iv, + .set_rptr = cz_ih_set_rptr +}; + +static void cz_ih_set_interrupt_funcs(struct amdgpu_device *adev) +{ + adev->irq.ih_funcs = &cz_ih_funcs; +} + +const struct amdgpu_ip_block_version cz_ih_ip_block = +{ + .type = AMD_IP_BLOCK_TYPE_IH, + .major = 3, + .minor = 0, + .rev = 0, + .funcs = &cz_ih_ip_funcs, +}; -- cgit v1.2.3