drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c

   1 /*
   2  * Copyright 2016-2018 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 "soc15_int.h"
  26
  27
  28 static bool event_interrupt_isr_v9(struct kfd_dev *dev,
  29                                         const uint32_t *ih_ring_entry,
  30                                         uint32_t *patched_ihre,
  31                                         bool *patched_flag)
  32 {
  33         uint16_t source_id, client_id, pasid, vmid;
  34         const uint32_t *data = ih_ring_entry;
  35
  36         /* Only handle interrupts from KFD VMIDs */
  37         vmid = SOC15_VMID_FROM_IH_ENTRY(ih_ring_entry);
  38         if (vmid < dev->vm_info.first_vmid_kfd ||
  39             vmid > dev->vm_info.last_vmid_kfd)
  40                 return 0;
  41
  42         /* If there is no valid PASID, it's likely a firmware bug */
  43         pasid = SOC15_PASID_FROM_IH_ENTRY(ih_ring_entry);
  44         if (WARN_ONCE(pasid == 0, "FW bug: No PASID in KFD interrupt"))
  45                 return 0;
  46
  47         source_id = SOC15_SOURCE_ID_FROM_IH_ENTRY(ih_ring_entry);
  48         client_id = SOC15_CLIENT_ID_FROM_IH_ENTRY(ih_ring_entry);
  49
  50         pr_debug("client id 0x%x, source id %d, pasid 0x%x. raw data:\n",
  51                  client_id, source_id, pasid);
  52         pr_debug("%8X, %8X, %8X, %8X, %8X, %8X, %8X, %8X.\n",
  53                  data[0], data[1], data[2], data[3],
  54                  data[4], data[5], data[6], data[7]);
  55
  56         /* Interrupt types we care about: various signals and faults.
  57          * They will be forwarded to a work queue (see below).
  58          */
  59         return source_id == SOC15_INTSRC_CP_END_OF_PIPE ||
  60                 source_id == SOC15_INTSRC_SDMA_TRAP ||
  61                 source_id == SOC15_INTSRC_SQ_INTERRUPT_MSG ||
  62                 source_id == SOC15_INTSRC_CP_BAD_OPCODE ||
  63                 client_id == SOC15_IH_CLIENTID_VMC ||
  64                 client_id == SOC15_IH_CLIENTID_UTCL2;
  65 }
  66
  67 static void event_interrupt_wq_v9(struct kfd_dev *dev,
  68                                         const uint32_t *ih_ring_entry)
  69 {
  70         uint16_t source_id, client_id, pasid, vmid;
  71         uint32_t context_id;
  72
  73         source_id = SOC15_SOURCE_ID_FROM_IH_ENTRY(ih_ring_entry);
  74         client_id = SOC15_CLIENT_ID_FROM_IH_ENTRY(ih_ring_entry);
  75         pasid = SOC15_PASID_FROM_IH_ENTRY(ih_ring_entry);
  76         vmid = SOC15_VMID_FROM_IH_ENTRY(ih_ring_entry);
  77         context_id = SOC15_CONTEXT_ID0_FROM_IH_ENTRY(ih_ring_entry);
  78
  79         if (source_id == SOC15_INTSRC_CP_END_OF_PIPE)
  80                 kfd_signal_event_interrupt(pasid, context_id, 32);
  81         else if (source_id == SOC15_INTSRC_SDMA_TRAP)
  82                 kfd_signal_event_interrupt(pasid, context_id & 0xfffffff, 28);
  83         else if (source_id == SOC15_INTSRC_SQ_INTERRUPT_MSG)
  84                 kfd_signal_event_interrupt(pasid, context_id & 0xffffff, 24);
  85         else if (source_id == SOC15_INTSRC_CP_BAD_OPCODE)
  86                 kfd_signal_hw_exception_event(pasid);
  87         else if (client_id == SOC15_IH_CLIENTID_VMC ||
  88                  client_id == SOC15_IH_CLIENTID_UTCL2) {
  89                 struct kfd_vm_fault_info info = {0};
  90                 uint16_t ring_id = SOC15_RING_ID_FROM_IH_ENTRY(ih_ring_entry);
  91
  92                 info.vmid = vmid;
  93                 info.mc_id = client_id;
  94                 info.page_addr = ih_ring_entry[4] |
  95                         (uint64_t)(ih_ring_entry[5] & 0xf) << 32;
  96                 info.prot_valid = ring_id & 0x08;
  97                 info.prot_read  = ring_id & 0x10;
  98                 info.prot_write = ring_id & 0x20;
  99
 100                 kfd_process_vm_fault(dev->dqm, pasid);
 101                 kfd_signal_vm_fault_event(dev, pasid, &info);
 102         }
 103 }
 104
 105 const struct kfd_event_interrupt_class event_interrupt_class_v9 = {
 106         .interrupt_isr = event_interrupt_isr_v9,
 107         .interrupt_wq = event_interrupt_wq_v9,
 108 };