1 files changed, 130 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c b/drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c
new file mode 100644
index 000000000..795382b55
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c
@@ -0,0 +1,130 @@
+/*
+ * 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 "kfd_priv.h"
+#include "kfd_events.h"
+#include "cik_int.h"
+#include "amdgpu_amdkfd.h"
+#include "kfd_smi_events.h"
+
+static bool cik_event_interrupt_isr(struct kfd_node *dev,
+					const uint32_t *ih_ring_entry,
+					uint32_t *patched_ihre,
+					bool *patched_flag)
+{
+	const struct cik_ih_ring_entry *ihre =
+			(const struct cik_ih_ring_entry *)ih_ring_entry;
+	const struct kfd2kgd_calls *f2g = dev->kfd2kgd;
+	unsigned int vmid;
+	uint16_t pasid;
+	bool ret;
+
+	/* This workaround is due to HW/FW limitation on Hawaii that
+	 * VMID and PASID are not written into ih_ring_entry
+	 */
+	if ((ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT ||
+		ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT) &&
+		dev->adev->asic_type == CHIP_HAWAII) {
+		struct cik_ih_ring_entry *tmp_ihre =
+			(struct cik_ih_ring_entry *)patched_ihre;
+
+		*patched_flag = true;
+		*tmp_ihre = *ihre;
+
+		vmid = f2g->read_vmid_from_vmfault_reg(dev->adev);
+		ret = f2g->get_atc_vmid_pasid_mapping_info(dev->adev, vmid, &pasid);
+
+		tmp_ihre->ring_id &= 0x000000ff;
+		tmp_ihre->ring_id |= vmid << 8;
+		tmp_ihre->ring_id |= pasid << 16;
+
+		return ret && (pasid != 0) &&
+			vmid >= dev->vm_info.first_vmid_kfd &&
+			vmid <= dev->vm_info.last_vmid_kfd;
+	}
+
+	/* Only handle interrupts from KFD VMIDs */
+	vmid  = (ihre->ring_id & 0x0000ff00) >> 8;
+	if (vmid < dev->vm_info.first_vmid_kfd ||
+	    vmid > dev->vm_info.last_vmid_kfd)
+		return false;
+
+	/* If there is no valid PASID, it's likely a firmware bug */
+	pasid = (ihre->ring_id & 0xffff0000) >> 16;
+	if (WARN_ONCE(pasid == 0, "FW bug: No PASID in KFD interrupt"))
+		return false;
+
+	/* Interrupt types we care about: various signals and faults.
+	 * They will be forwarded to a work queue (see below).
+	 */
+	return ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE ||
+		ihre->source_id == CIK_INTSRC_SDMA_TRAP ||
+		ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG ||
+		ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE ||
+		((ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT ||
+		ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT) &&
+		!amdgpu_no_queue_eviction_on_vm_fault);
+}
+
+static void cik_event_interrupt_wq(struct kfd_node *dev,
+					const uint32_t *ih_ring_entry)
+{
+	const struct cik_ih_ring_entry *ihre =
+			(const struct cik_ih_ring_entry *)ih_ring_entry;
+	uint32_t context_id = ihre->data & 0xfffffff;
+	unsigned int vmid  = (ihre->ring_id & 0x0000ff00) >> 8;
+	u32 pasid = (ihre->ring_id & 0xffff0000) >> 16;
+
+	if (pasid == 0)
+		return;
+
+	if (ihre->source_id == CIK_INTSRC_CP_END_OF_PIPE)
+		kfd_signal_event_interrupt(pasid, context_id, 28);
+	else if (ihre->source_id == CIK_INTSRC_SDMA_TRAP)
+		kfd_signal_event_interrupt(pasid, context_id, 28);
+	else if (ihre->source_id == CIK_INTSRC_SQ_INTERRUPT_MSG)
+		kfd_signal_event_interrupt(pasid, context_id & 0xff, 8);
+	else if (ihre->source_id == CIK_INTSRC_CP_BAD_OPCODE)
+		kfd_signal_hw_exception_event(pasid);
+	else if (ihre->source_id == CIK_INTSRC_GFX_PAGE_INV_FAULT ||
+		ihre->source_id == CIK_INTSRC_GFX_MEM_PROT_FAULT) {
+		struct kfd_vm_fault_info info;
+
+		kfd_smi_event_update_vmfault(dev, pasid);
+		kfd_dqm_evict_pasid(dev->dqm, pasid);
+
+		memset(&info, 0, sizeof(info));
+		amdgpu_amdkfd_gpuvm_get_vm_fault_info(dev->adev, &info);
+		if (!info.page_addr && !info.status)
+			return;
+
+		if (info.vmid == vmid)
+			kfd_signal_vm_fault_event(dev, pasid, &info, NULL);
+		else
+			kfd_signal_vm_fault_event(dev, pasid, NULL, NULL);
+	}
+}
+
+const struct kfd_event_interrupt_class event_interrupt_class_cik = {
+	.interrupt_isr = cik_event_interrupt_isr,
+	.interrupt_wq = cik_event_interrupt_wq,
+};