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/*
* Copyright 2016-2018 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 "kfd_priv.h"
#include "kfd_events.h"
#include "soc15_int.h"
#include "kfd_device_queue_manager.h"
static bool event_interrupt_isr_v9(struct kfd_dev *dev,
const uint32_t *ih_ring_entry,
uint32_t *patched_ihre,
bool *patched_flag)
{
uint16_t source_id, client_id, pasid, vmid;
const uint32_t *data = ih_ring_entry;
/* Only handle interrupts from KFD VMIDs */
vmid = SOC15_VMID_FROM_IH_ENTRY(ih_ring_entry);
if (vmid < dev->vm_info.first_vmid_kfd ||
vmid > dev->vm_info.last_vmid_kfd)
return 0;
source_id = SOC15_SOURCE_ID_FROM_IH_ENTRY(ih_ring_entry);
client_id = SOC15_CLIENT_ID_FROM_IH_ENTRY(ih_ring_entry);
pasid = SOC15_PASID_FROM_IH_ENTRY(ih_ring_entry);
/* This is a known issue for gfx9. Under non HWS, pasid is not set
* in the interrupt payload, so we need to find out the pasid on our
* own.
*/
if (!pasid && dev->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) {
const uint32_t pasid_mask = 0xffff;
*patched_flag = true;
memcpy(patched_ihre, ih_ring_entry,
dev->device_info->ih_ring_entry_size);
pasid = dev->kfd2kgd->get_atc_vmid_pasid_mapping_pasid(
dev->kgd, vmid);
/* Patch the pasid field */
patched_ihre[3] = cpu_to_le32((le32_to_cpu(patched_ihre[3])
& ~pasid_mask) | pasid);
}
pr_debug("client id 0x%x, source id %d, vmid %d, pasid 0x%x. raw data:\n",
client_id, source_id, vmid, pasid);
pr_debug("%8X, %8X, %8X, %8X, %8X, %8X, %8X, %8X.\n",
data[0], data[1], data[2], data[3],
data[4], data[5], data[6], data[7]);
/* If there is no valid PASID, it's likely a bug */
if (WARN_ONCE(pasid == 0, "Bug: No PASID in KFD interrupt"))
return 0;
/* Interrupt types we care about: various signals and faults.
* They will be forwarded to a work queue (see below).
*/
return source_id == SOC15_INTSRC_CP_END_OF_PIPE ||
source_id == SOC15_INTSRC_SDMA_TRAP ||
source_id == SOC15_INTSRC_SQ_INTERRUPT_MSG ||
source_id == SOC15_INTSRC_CP_BAD_OPCODE ||
client_id == SOC15_IH_CLIENTID_VMC ||
client_id == SOC15_IH_CLIENTID_UTCL2;
}
static void event_interrupt_wq_v9(struct kfd_dev *dev,
const uint32_t *ih_ring_entry)
{
uint16_t source_id, client_id, pasid, vmid;
uint32_t context_id;
source_id = SOC15_SOURCE_ID_FROM_IH_ENTRY(ih_ring_entry);
client_id = SOC15_CLIENT_ID_FROM_IH_ENTRY(ih_ring_entry);
pasid = SOC15_PASID_FROM_IH_ENTRY(ih_ring_entry);
vmid = SOC15_VMID_FROM_IH_ENTRY(ih_ring_entry);
context_id = SOC15_CONTEXT_ID0_FROM_IH_ENTRY(ih_ring_entry);
if (source_id == SOC15_INTSRC_CP_END_OF_PIPE)
kfd_signal_event_interrupt(pasid, context_id, 32);
else if (source_id == SOC15_INTSRC_SDMA_TRAP)
kfd_signal_event_interrupt(pasid, context_id & 0xfffffff, 28);
else if (source_id == SOC15_INTSRC_SQ_INTERRUPT_MSG)
kfd_signal_event_interrupt(pasid, context_id & 0xffffff, 24);
else if (source_id == SOC15_INTSRC_CP_BAD_OPCODE)
kfd_signal_hw_exception_event(pasid);
else if (client_id == SOC15_IH_CLIENTID_VMC ||
client_id == SOC15_IH_CLIENTID_UTCL2) {
struct kfd_vm_fault_info info = {0};
uint16_t ring_id = SOC15_RING_ID_FROM_IH_ENTRY(ih_ring_entry);
info.vmid = vmid;
info.mc_id = client_id;
info.page_addr = ih_ring_entry[4] |
(uint64_t)(ih_ring_entry[5] & 0xf) << 32;
info.prot_valid = ring_id & 0x08;
info.prot_read = ring_id & 0x10;
info.prot_write = ring_id & 0x20;
kfd_process_vm_fault(dev->dqm, pasid);
kfd_signal_vm_fault_event(dev, pasid, &info);
}
}
const struct kfd_event_interrupt_class event_interrupt_class_v9 = {
.interrupt_isr = event_interrupt_isr_v9,
.interrupt_wq = event_interrupt_wq_v9,
};
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