drm/amdgpu: add core driver (v4)

This adds the non-asic specific core driver code.

v2: remove extra kconfig option
v3: implement minor fixes from Fengguang Wu
v4: fix cast in amdgpu_ucode.c

Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 92 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h
new file mode 100644
index 000000000000..8299795f2b2d
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h
@@ -0,0 +1,92 @@
+/*
+ * 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 "amdgpu_ih.h"
+
+#define AMDGPU_MAX_IRQ_SRC_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;
+};
+
+/* 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_src           *sources[AMDGPU_MAX_IRQ_SRC_ID];
+
+        /* status, etc. */
+        bool                            msi_enabled; /* msi enabled */
+
+        /* interrupt ring */
+        struct amdgpu_ih_ring           ih;
+        const struct amdgpu_ih_funcs    *ih_funcs;
+};
+
+void amdgpu_irq_preinstall(struct drm_device *dev);
+int amdgpu_irq_postinstall(struct drm_device *dev);
+void amdgpu_irq_uninstall(struct drm_device *dev);
+irqreturn_t amdgpu_irq_handler(int irq, 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 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);
+bool amdgpu_irq_get_delayed(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);
+
+#endif