add amdgpu from linux 4.19.44 for recent AMD Radeon parts

committing now so this can be worked on in tree

Thanks to the OpenBSD Foundation for sponsoring this work and kettenis@
for helping.

1 files changed, 105 insertions, 0 deletions

diff --git a/sys/dev/pci/drm/amd/amdgpu/amdgpu_irq.h b/sys/dev/pci/drm/amd/amdgpu/amdgpu_irq.h
new file mode 100644
index 00000000000..e6cb4ebd954
--- /dev/null
+++ b/sys/dev/pci/drm/amd/amdgpu/amdgpu_irq.h
@@ -0,0 +1,105 @@
+/*
+ * 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.
+ *
+ */
+
+#ifndef __AMDGPU_IRQ_H__
+#define __AMDGPU_IRQ_H__
+
+#include <linux/irqdomain.h>
+#include "amdgpu_ih.h"
+
+#define AMDGPU_MAX_IRQ_SRC_ID	0x100
+#define AMDGPU_MAX_IRQ_CLIENT_ID	0x100
+
+struct amdgpu_device;
+struct amdgpu_iv_entry;
+
+enum amdgpu_interrupt_state {
+	AMDGPU_IRQ_STATE_DISABLE,
+	AMDGPU_IRQ_STATE_ENABLE,
+};
+
+struct amdgpu_irq_src {
+	unsigned				num_types;
+	atomic_t				*enabled_types;
+	const struct amdgpu_irq_src_funcs	*funcs;
+	void *data;
+};
+
+struct amdgpu_irq_client {
+	struct amdgpu_irq_src **sources;
+};
+
+/* provided by interrupt generating IP blocks */
+struct amdgpu_irq_src_funcs {
+	int (*set)(struct amdgpu_device *adev, struct amdgpu_irq_src *source,
+		   unsigned type, enum amdgpu_interrupt_state state);
+
+	int (*process)(struct amdgpu_device *adev,
+		       struct amdgpu_irq_src *source,
+		       struct amdgpu_iv_entry *entry);
+};
+
+struct amdgpu_irq {
+	bool				installed;
+	spinlock_t			lock;
+	/* interrupt sources */
+	struct amdgpu_irq_client	client[AMDGPU_IH_CLIENTID_MAX];
+
+	/* status, etc. */
+	bool				msi_enabled; /* msi enabled */
+
+	/* interrupt ring */
+	struct amdgpu_ih_ring		ih;
+	const struct amdgpu_ih_funcs	*ih_funcs;
+
+	/* gen irq stuff */
+	struct irq_domain		*domain; /* GPU irq controller domain */
+	unsigned			virq[AMDGPU_MAX_IRQ_SRC_ID];
+	uint32_t                        srbm_soft_reset;
+};
+
+void amdgpu_irq_disable_all(struct amdgpu_device *adev);
+irqreturn_t amdgpu_irq_handler(void *arg);
+
+int amdgpu_irq_init(struct amdgpu_device *adev);
+void amdgpu_irq_fini(struct amdgpu_device *adev);
+int amdgpu_irq_add_id(struct amdgpu_device *adev,
+		      unsigned client_id, unsigned src_id,
+		      struct amdgpu_irq_src *source);
+void amdgpu_irq_dispatch(struct amdgpu_device *adev,
+			 struct amdgpu_iv_entry *entry);
+int amdgpu_irq_update(struct amdgpu_device *adev, struct amdgpu_irq_src *src,
+		      unsigned type);
+int amdgpu_irq_get(struct amdgpu_device *adev, struct amdgpu_irq_src *src,
+		   unsigned type);
+int amdgpu_irq_put(struct amdgpu_device *adev, struct amdgpu_irq_src *src,
+		   unsigned type);
+bool amdgpu_irq_enabled(struct amdgpu_device *adev, struct amdgpu_irq_src *src,
+			unsigned type);
+void amdgpu_irq_gpu_reset_resume_helper(struct amdgpu_device *adev);
+
+int amdgpu_irq_add_domain(struct amdgpu_device *adev);
+void amdgpu_irq_remove_domain(struct amdgpu_device *adev);
+unsigned amdgpu_irq_create_mapping(struct amdgpu_device *adev, unsigned src_id);
+
+#endif