drm/amdkfd: Add SOC15 interrupt processing support

Signed-off-by: Shaoyun Liu <Shaoyun.Liu@amd.com>
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

1 files changed, 84 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c
new file mode 100644
index 000000000000..39d41155581f
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_int_process_v9.c
@@ -0,0 +1,84 @@
+/*
+ * 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"
+
+
+static bool event_interrupt_isr_v9(struct kfd_dev *dev,
+					const uint32_t *ih_ring_entry)
+{
+	uint16_t source_id, client_id, pasid, vmid;
+
+	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);
+
+	if (pasid) {
+		const uint32_t *data = ih_ring_entry;
+
+		pr_debug("client id 0x%x, source id %d, pasid 0x%x. raw data:\n",
+			 client_id, source_id, 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]);
+	}
+
+	return (pasid != 0) &&
+		(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);
+}
+
+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) {
+		/* TODO */
+	}
+}
+
+const struct kfd_event_interrupt_class event_interrupt_class_v9 = {
+	.interrupt_isr = event_interrupt_isr_v9,
+	.interrupt_wq = event_interrupt_wq_v9,
+};