LXR linux/drivers/gpu/drm/amd/amdkfd/cik_event

   1/*
   2 * Copyright 2014 Advanced Micro Devices, Inc.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 * OTHER DEALINGS IN THE SOFTWARE.
  21 */
  22
  23#include "kfd_priv.h"
  24#include "kfd_events.h"
  25#include "cik_int.h"
  26#include "amdgpu_amdkfd.h"
  27#include "kfd_smi_events.h"
  28
  29static bool cik_event_interrupt_isr(struct kfd_dev *dev,
  30                                        const uint32_t *ih_ring_entry,
  31                                        uint32_t *patched_ihre,
  32                                        bool *patched_flag)
  33{
  34        const struct cik_ih_ring_entry *ihre =
  35                        (const struct cik_ih_ring_entry *)ih_ring_entry;
  36        const struct kfd2kgd_calls *f2g = dev->kfd2kgd;
  37        unsigned int vmid;
  38        uint16_t pasid;
  39        bool ret;
  40
  41        /* This workaround is due to HW/FW limitation on Hawaii that
  42         * VMID and PASID are not written into ih_ring_entry
  43         */
  44        if ((ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT ||
  45                ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT) &&
  46                dev->device_info->asic_family == CHIP_HAWAII) {
  47                struct cik_ih_ring_entry *tmp_ihre =
  48                        (struct cik_ih_ring_entry *)patched_ihre;
  49
  50                *patched_flag = true;
  51                *tmp_ihre = *ihre;
  52
  53                vmid = f2g->read_vmid_from_vmfault_reg(dev->kgd);
  54                ret = f2g->get_atc_vmid_pasid_mapping_info(dev->kgd, vmid, &pasid);
  55
  56                tmp_ihre->ring_id &= 0x000000ff;
  57                tmp_ihre->ring_id |= vmid << 8;
  58                tmp_ihre->ring_id |= pasid << 16;
  59
  60                return ret && (pasid != 0) &&
  61                        vmid >= dev->vm_info.first_vmid_kfd &&
  62                        vmid <= dev->vm_info.last_vmid_kfd;
  63        }
  64
  65        /* Only handle interrupts from KFD VMIDs */
  66        vmid  = (ihre->ring_id & 0x0000ff00) >> 8;
  67        if (vmid < dev->vm_info.first_vmid_kfd ||
  68            vmid > dev->vm_info.last_vmid_kfd)
  69                return false;
  70
  71        /* If there is no valid PASID, it's likely a firmware bug */
  72        pasid = (ihre->ring_id & 0xffff0000) >> 16;
  73        if (WARN_ONCE(pasid == 0, "FW bug: No PASID in KFD interrupt"))
  74                return false;
  75
  76        /* Interrupt types we care about: various signals and faults.
  77         * They will be forwarded to a work queue (see below).
  78         */
  79        return ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE ||
  80                ihre->source_id == CIK_INTSRC_SDMA_TRAP ||
  81                ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG ||
  82                ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE ||
  83                ((ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT ||
  84                ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT) &&
  85                !amdgpu_no_queue_eviction_on_vm_fault);
  86}
  87
  88static void cik_event_interrupt_wq(struct kfd_dev *dev,
  89                                        const uint32_t *ih_ring_entry)
  90{
  91        const struct cik_ih_ring_entry *ihre =
  92                        (const struct cik_ih_ring_entry *)ih_ring_entry;
  93        uint32_t context_id = ihre->data & 0xfffffff;
  94        unsigned int vmid  = (ihre->ring_id & 0x0000ff00) >> 8;
  95        u32 pasid = (ihre->ring_id & 0xffff0000) >> 16;
  96
  97        if (pasid == 0)
  98                return;
  99
 100        if (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE)
 101                kfd_signal_event_interrupt(pasid, context_id, 28);
 102        else if (ihre->source_id == CIK_INTSRC_SDMA_TRAP)
 103                kfd_signal_event_interrupt(pasid, context_id, 28);
 104        else if (ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG)
 105                kfd_signal_event_interrupt(pasid, context_id & 0xff, 8);
 106        else if (ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE)
 107                kfd_signal_hw_exception_event(pasid);
 108        else if (ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT ||
 109                ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT) {
 110                struct kfd_vm_fault_info info;
 111
 112                kfd_smi_event_update_vmfault(dev, pasid);
 113                kfd_process_vm_fault(dev->dqm, pasid);
 114
 115                memset(&info, 0, sizeof(info));
 116                amdgpu_amdkfd_gpuvm_get_vm_fault_info(dev->kgd, &info);
 117                if (!info.page_addr && !info.status)
 118                        return;
 119
 120                if (info.vmid == vmid)
 121                        kfd_signal_vm_fault_event(dev, pasid, &info);
 122                else
 123                        kfd_signal_vm_fault_event(dev, pasid, NULL);
 124        }
 125}
 126
 127const struct kfd_event_interrupt_class event_interrupt_class_cik = {
 128        .interrupt_isr = cik_event_interrupt_isr,
 129        .interrupt_wq = cik_event_interrupt_wq,
 130};
 131