forked from Minki/linux
a53a11a835
This is a known gfx9 HW issue, and this change can perfectly workaround the issue. Signed-off-by: Yong Zhao <Yong.Zhao@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
128 lines
4.6 KiB
C
128 lines
4.6 KiB
C
/*
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* Copyright 2016-2018 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "kfd_priv.h"
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#include "kfd_events.h"
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#include "soc15_int.h"
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#include "kfd_device_queue_manager.h"
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static bool event_interrupt_isr_v9(struct kfd_dev *dev,
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const uint32_t *ih_ring_entry,
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uint32_t *patched_ihre,
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bool *patched_flag)
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{
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uint16_t source_id, client_id, pasid, vmid;
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const uint32_t *data = ih_ring_entry;
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/* Only handle interrupts from KFD VMIDs */
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vmid = SOC15_VMID_FROM_IH_ENTRY(ih_ring_entry);
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if (vmid < dev->vm_info.first_vmid_kfd ||
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vmid > dev->vm_info.last_vmid_kfd)
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return 0;
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source_id = SOC15_SOURCE_ID_FROM_IH_ENTRY(ih_ring_entry);
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client_id = SOC15_CLIENT_ID_FROM_IH_ENTRY(ih_ring_entry);
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pasid = SOC15_PASID_FROM_IH_ENTRY(ih_ring_entry);
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/* This is a known issue for gfx9. Under non HWS, pasid is not set
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* in the interrupt payload, so we need to find out the pasid on our
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* own.
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*/
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if (!pasid && dev->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) {
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const uint32_t pasid_mask = 0xffff;
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*patched_flag = true;
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memcpy(patched_ihre, ih_ring_entry,
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dev->device_info->ih_ring_entry_size);
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pasid = dev->kfd2kgd->get_atc_vmid_pasid_mapping_pasid(
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dev->kgd, vmid);
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/* Patch the pasid field */
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patched_ihre[3] = cpu_to_le32((le32_to_cpu(patched_ihre[3])
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& ~pasid_mask) | pasid);
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}
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pr_debug("client id 0x%x, source id %d, vmid %d, pasid 0x%x. raw data:\n",
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client_id, source_id, vmid, pasid);
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pr_debug("%8X, %8X, %8X, %8X, %8X, %8X, %8X, %8X.\n",
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data[0], data[1], data[2], data[3],
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data[4], data[5], data[6], data[7]);
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/* If there is no valid PASID, it's likely a bug */
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if (WARN_ONCE(pasid == 0, "Bug: No PASID in KFD interrupt"))
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return 0;
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/* Interrupt types we care about: various signals and faults.
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* They will be forwarded to a work queue (see below).
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*/
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return source_id == SOC15_INTSRC_CP_END_OF_PIPE ||
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source_id == SOC15_INTSRC_SDMA_TRAP ||
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source_id == SOC15_INTSRC_SQ_INTERRUPT_MSG ||
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source_id == SOC15_INTSRC_CP_BAD_OPCODE ||
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client_id == SOC15_IH_CLIENTID_VMC ||
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client_id == SOC15_IH_CLIENTID_UTCL2;
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}
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static void event_interrupt_wq_v9(struct kfd_dev *dev,
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const uint32_t *ih_ring_entry)
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{
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uint16_t source_id, client_id, pasid, vmid;
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uint32_t context_id;
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source_id = SOC15_SOURCE_ID_FROM_IH_ENTRY(ih_ring_entry);
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client_id = SOC15_CLIENT_ID_FROM_IH_ENTRY(ih_ring_entry);
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pasid = SOC15_PASID_FROM_IH_ENTRY(ih_ring_entry);
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vmid = SOC15_VMID_FROM_IH_ENTRY(ih_ring_entry);
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context_id = SOC15_CONTEXT_ID0_FROM_IH_ENTRY(ih_ring_entry);
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if (source_id == SOC15_INTSRC_CP_END_OF_PIPE)
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kfd_signal_event_interrupt(pasid, context_id, 32);
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else if (source_id == SOC15_INTSRC_SDMA_TRAP)
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kfd_signal_event_interrupt(pasid, context_id & 0xfffffff, 28);
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else if (source_id == SOC15_INTSRC_SQ_INTERRUPT_MSG)
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kfd_signal_event_interrupt(pasid, context_id & 0xffffff, 24);
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else if (source_id == SOC15_INTSRC_CP_BAD_OPCODE)
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kfd_signal_hw_exception_event(pasid);
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else if (client_id == SOC15_IH_CLIENTID_VMC ||
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client_id == SOC15_IH_CLIENTID_UTCL2) {
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struct kfd_vm_fault_info info = {0};
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uint16_t ring_id = SOC15_RING_ID_FROM_IH_ENTRY(ih_ring_entry);
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info.vmid = vmid;
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info.mc_id = client_id;
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info.page_addr = ih_ring_entry[4] |
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(uint64_t)(ih_ring_entry[5] & 0xf) << 32;
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info.prot_valid = ring_id & 0x08;
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info.prot_read = ring_id & 0x10;
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info.prot_write = ring_id & 0x20;
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kfd_process_vm_fault(dev->dqm, pasid);
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kfd_signal_vm_fault_event(dev, pasid, &info);
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}
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}
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const struct kfd_event_interrupt_class event_interrupt_class_v9 = {
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.interrupt_isr = event_interrupt_isr_v9,
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.interrupt_wq = event_interrupt_wq_v9,
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};
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