Message-ID: <1405603773-32688-10-git-send-email-oded.gabbay@amd.com>
Date:	Thu, 17 Jul 2014 16:29:16 +0300
From:	Oded Gabbay <oded.gabbay@....com>
To:	David Airlie <airlied@...ux.ie>,
	Jerome Glisse <j.glisse@...il.com>,
	"Alex Deucher" <alexdeucher@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>
CC:	John Bridgman <John.Bridgman@....com>,
	Joerg Roedel <joro@...tes.org>,
	Andrew Lewycky <Andrew.Lewycky@....com>,
	Christian König <deathsimple@...afone.de>,
	Michel Dänzer <michel.daenzer@....com>,
	Ben Goz <Ben.Goz@....com>,
	Alexey Skidanov <Alexey.Skidanov@....com>,
	Evgeny Pinchuk <Evgeny.Pinchuk@....com>,
	"Oded Gabbay" <oded.gabbay@....com>,
	Alex Deucher <alexander.deucher@....com>,
	Christian König <christian.koenig@....com>,
	<linux-kernel@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>
Subject: [PATCH v2 09/25] amdkfd: Add amdkfd skeleton driver

This patch adds the amdkfd skeleton driver. The driver does nothing except
define a /dev/kfd device.

It returns -ENODEV on all amdkfd IOCTLs.

Signed-off-by: Oded Gabbay <oded.gabbay@....com>
---
 drivers/gpu/drm/radeon/Kconfig              |   2 +
 drivers/gpu/drm/radeon/Makefile             |   2 +
 drivers/gpu/drm/radeon/amdkfd/Kconfig       |  10 ++
 drivers/gpu/drm/radeon/amdkfd/Makefile      |   9 ++
 drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c | 203 ++++++++++++++++++++++++++++
 drivers/gpu/drm/radeon/amdkfd/kfd_device.c  | 129 ++++++++++++++++++
 drivers/gpu/drm/radeon/amdkfd/kfd_module.c  |  98 ++++++++++++++
 drivers/gpu/drm/radeon/amdkfd/kfd_priv.h    |  81 +++++++++++
 8 files changed, 534 insertions(+)
 create mode 100644 drivers/gpu/drm/radeon/amdkfd/Kconfig
 create mode 100644 drivers/gpu/drm/radeon/amdkfd/Makefile
 create mode 100644 drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c
 create mode 100644 drivers/gpu/drm/radeon/amdkfd/kfd_device.c
 create mode 100644 drivers/gpu/drm/radeon/amdkfd/kfd_module.c
 create mode 100644 drivers/gpu/drm/radeon/amdkfd/kfd_priv.h

diff --git a/drivers/gpu/drm/radeon/Kconfig b/drivers/gpu/drm/radeon/Kconfig
index 970f8e9..b697321 100644
--- a/drivers/gpu/drm/radeon/Kconfig
+++ b/drivers/gpu/drm/radeon/Kconfig
@@ -6,3 +6,5 @@ config DRM_RADEON_UMS
 
 	  Userspace modesetting is deprecated for quite some time now, so
 	  enable this only if you have ancient versions of the DDX drivers.
+
+source "drivers/gpu/drm/radeon/amdkfd/Kconfig"
diff --git a/drivers/gpu/drm/radeon/Makefile b/drivers/gpu/drm/radeon/Makefile
index a1c913d..50823a1 100644
--- a/drivers/gpu/drm/radeon/Makefile
+++ b/drivers/gpu/drm/radeon/Makefile
@@ -112,4 +112,6 @@ radeon-$(CONFIG_ACPI) += radeon_acpi.o
 
 obj-$(CONFIG_DRM_RADEON)+= radeon.o
 
+obj-$(CONFIG_HSA_RADEON)+= amdkfd/
+
 CFLAGS_radeon_trace_points.o := -I$(src)
diff --git a/drivers/gpu/drm/radeon/amdkfd/Kconfig b/drivers/gpu/drm/radeon/amdkfd/Kconfig
new file mode 100644
index 0000000..900bb34
--- /dev/null
+++ b/drivers/gpu/drm/radeon/amdkfd/Kconfig
@@ -0,0 +1,10 @@
+#
+# Heterogenous system architecture configuration
+#
+
+config HSA_RADEON
+	tristate "HSA kernel driver for AMD Radeon devices"
+	depends on DRM_RADEON && AMD_IOMMU_V2 && X86_64
+	default m
+	help
+	  Enable this if you want to use HSA features on AMD radeon devices.
diff --git a/drivers/gpu/drm/radeon/amdkfd/Makefile b/drivers/gpu/drm/radeon/amdkfd/Makefile
new file mode 100644
index 0000000..9564e75
--- /dev/null
+++ b/drivers/gpu/drm/radeon/amdkfd/Makefile
@@ -0,0 +1,9 @@
+#
+# Makefile for Heterogenous System Architecture support for AMD radeon devices
+#
+
+ccflags-y := -Iinclude/drm
+
+amdkfd-y	:= kfd_module.o kfd_device.o kfd_chardev.o
+
+obj-$(CONFIG_HSA_RADEON)	+= amdkfd.o
diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c b/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c
new file mode 100644
index 0000000..b98bcb7
--- /dev/null
+++ b/drivers/gpu/drm/radeon/amdkfd/kfd_chardev.c
@@ -0,0 +1,203 @@
+/*
+ * 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 <linux/device.h>
+#include <linux/export.h>
+#include <linux/err.h>
+#include <linux/fs.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include <linux/compat.h>
+#include <uapi/linux/kfd_ioctl.h>
+#include <linux/time.h>
+#include <linux/mm.h>
+#include <linux/uaccess.h>
+#include <uapi/asm-generic/mman-common.h>
+#include <asm/processor.h>
+#include "kfd_priv.h"
+
+static long kfd_ioctl(struct file *, unsigned int, unsigned long);
+static int kfd_open(struct inode *, struct file *);
+
+static const char kfd_dev_name[] = "kfd";
+
+static const struct file_operations kfd_fops = {
+	.owner = THIS_MODULE,
+	.unlocked_ioctl = kfd_ioctl,
+	.compat_ioctl = kfd_ioctl,
+	.open = kfd_open,
+};
+
+static int kfd_char_dev_major = -1;
+static struct class *kfd_class;
+struct device *kfd_device;
+
+int kfd_chardev_init(void)
+{
+	int err = 0;
+
+	kfd_char_dev_major = register_chrdev(0, kfd_dev_name, &kfd_fops);
+	err = kfd_char_dev_major;
+	if (err < 0)
+		goto err_register_chrdev;
+
+	kfd_class = class_create(THIS_MODULE, kfd_dev_name);
+	err = PTR_ERR(kfd_class);
+	if (IS_ERR(kfd_class))
+		goto err_class_create;
+
+	kfd_device = device_create(kfd_class, NULL, MKDEV(kfd_char_dev_major, 0), NULL, kfd_dev_name);
+	err = PTR_ERR(kfd_device);
+	if (IS_ERR(kfd_device))
+		goto err_device_create;
+
+	return 0;
+
+err_device_create:
+	class_destroy(kfd_class);
+err_class_create:
+	unregister_chrdev(kfd_char_dev_major, kfd_dev_name);
+err_register_chrdev:
+	return err;
+}
+
+void kfd_chardev_exit(void)
+{
+	device_destroy(kfd_class, MKDEV(kfd_char_dev_major, 0));
+	class_destroy(kfd_class);
+	unregister_chrdev(kfd_char_dev_major, kfd_dev_name);
+}
+
+struct device *kfd_chardev(void)
+{
+	return kfd_device;
+}
+
+
+static int kfd_open(struct inode *inode, struct file *filep)
+{
+	if (iminor(inode) != 0)
+		return -ENODEV;
+
+	return 0;
+}
+
+static long kfd_ioctl_create_queue(struct file *filep, struct kfd_process *p, void __user *arg)
+{
+	return -ENODEV;
+}
+
+static int kfd_ioctl_destroy_queue(struct file *filp, struct kfd_process *p, void __user *arg)
+{
+	return -ENODEV;
+}
+
+static int kfd_ioctl_update_queue(struct file *filp, struct kfd_process *p, void __user *arg)
+{
+	return -ENODEV;
+}
+
+static long kfd_ioctl_set_memory_policy(struct file *filep, struct kfd_process *p, void __user *arg)
+{
+	return -ENODEV;
+}
+
+static long kfd_ioctl_get_clock_counters(struct file *filep, struct kfd_process *p, void __user *arg)
+{
+	return -ENODEV;
+}
+
+
+static int kfd_ioctl_get_process_apertures(struct file *filp, struct kfd_process *p, void __user *arg)
+{
+	return -ENODEV;
+}
+
+static long kfd_ioctl_pmc_acquire_access(struct file *filp, struct kfd_process *p, void __user *arg)
+{
+	return -ENODEV;
+}
+
+static long kfd_ioctl_pmc_release_access(struct file *filp, struct kfd_process *p, void __user *arg)
+{
+	return -ENODEV;
+}
+
+static long kfd_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
+{
+	struct kfd_process *process;
+	long err = -EINVAL;
+
+	dev_dbg(kfd_device,
+		"ioctl cmd 0x%x (#%d), arg 0x%lx\n",
+		cmd, _IOC_NR(cmd), arg);
+
+	/* TODO: add function that retrieves process */
+	process = NULL;
+
+	switch (cmd) {
+	case KFD_IOC_CREATE_QUEUE:
+		err = kfd_ioctl_create_queue(filep, process, (void __user *)arg);
+		break;
+
+	case KFD_IOC_DESTROY_QUEUE:
+		err = kfd_ioctl_destroy_queue(filep, process, (void __user *)arg);
+		break;
+
+	case KFD_IOC_SET_MEMORY_POLICY:
+		err = kfd_ioctl_set_memory_policy(filep, process, (void __user *)arg);
+		break;
+
+	case KFD_IOC_GET_CLOCK_COUNTERS:
+		err = kfd_ioctl_get_clock_counters(filep, process, (void __user *)arg);
+		break;
+
+	case KFD_IOC_GET_PROCESS_APERTURES:
+		err = kfd_ioctl_get_process_apertures(filep, process, (void __user *)arg);
+		break;
+
+	case KFD_IOC_UPDATE_QUEUE:
+		err = kfd_ioctl_update_queue(filep, process, (void __user *)arg);
+		break;
+
+	case KFD_IOC_PMC_ACQUIRE_ACCESS:
+		err = kfd_ioctl_pmc_acquire_access(filep, process, (void __user *) arg);
+		break;
+
+	case KFD_IOC_PMC_RELEASE_ACCESS:
+		err = kfd_ioctl_pmc_release_access(filep, process, (void __user *) arg);
+		break;
+
+	default:
+		dev_err(kfd_device,
+			"unknown ioctl cmd 0x%x, arg 0x%lx)\n",
+			cmd, arg);
+		err = -EINVAL;
+		break;
+	}
+
+	if (err < 0)
+		dev_err(kfd_device, "ioctl error %ld\n", err);
+
+	return err;
+}
diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_device.c b/drivers/gpu/drm/radeon/amdkfd/kfd_device.c
new file mode 100644
index 0000000..dd63ce09
--- /dev/null
+++ b/drivers/gpu/drm/radeon/amdkfd/kfd_device.c
@@ -0,0 +1,129 @@
+/*
+ * 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 <linux/amd-iommu.h>
+#include <linux/bsearch.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include "kfd_priv.h"
+
+static const struct kfd_device_info kaveri_device_info = {
+	.max_pasid_bits = 16,
+};
+
+struct kfd_deviceid {
+	unsigned short did;
+	const struct kfd_device_info *device_info;
+};
+
+/* Please keep this sorted by increasing device id. */
+static const struct kfd_deviceid supported_devices[] = {
+	{ 0x1304, &kaveri_device_info },	/* Kaveri */
+	{ 0x1305, &kaveri_device_info },	/* Kaveri */
+	{ 0x1306, &kaveri_device_info },	/* Kaveri */
+	{ 0x1307, &kaveri_device_info },	/* Kaveri */
+	{ 0x1309, &kaveri_device_info },	/* Kaveri */
+	{ 0x130A, &kaveri_device_info },	/* Kaveri */
+	{ 0x130B, &kaveri_device_info },	/* Kaveri */
+	{ 0x130C, &kaveri_device_info },	/* Kaveri */
+	{ 0x130D, &kaveri_device_info },	/* Kaveri */
+	{ 0x130E, &kaveri_device_info },	/* Kaveri */
+	{ 0x130F, &kaveri_device_info },	/* Kaveri */
+	{ 0x1310, &kaveri_device_info },	/* Kaveri */
+	{ 0x1311, &kaveri_device_info },	/* Kaveri */
+	{ 0x1312, &kaveri_device_info },	/* Kaveri */
+	{ 0x1313, &kaveri_device_info },	/* Kaveri */
+	{ 0x1315, &kaveri_device_info },	/* Kaveri */
+	{ 0x1316, &kaveri_device_info },	/* Kaveri */
+	{ 0x1317, &kaveri_device_info },	/* Kaveri */
+	{ 0x1318, &kaveri_device_info },	/* Kaveri */
+	{ 0x131B, &kaveri_device_info },	/* Kaveri */
+	{ 0x131C, &kaveri_device_info },	/* Kaveri */
+	{ 0x131D, &kaveri_device_info },	/* Kaveri */
+};
+
+static const struct kfd_device_info *lookup_device_info(unsigned short did)
+{
+	size_t i;
+
+	for (i = 0; i < ARRAY_SIZE(supported_devices); i++) {
+		if (supported_devices[i].did == did) {
+			BUG_ON(supported_devices[i].device_info == NULL);
+			return supported_devices[i].device_info;
+		}
+	}
+
+	return NULL;
+}
+
+struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, struct pci_dev *pdev)
+{
+	struct kfd_dev *kfd;
+
+	const struct kfd_device_info *device_info = lookup_device_info(pdev->device);
+
+	if (!device_info)
+		return NULL;
+
+	kfd = kzalloc(sizeof(*kfd), GFP_KERNEL);
+	if (!kfd)
+		return NULL;
+
+	kfd->kgd = kgd;
+	kfd->device_info = device_info;
+	kfd->pdev = pdev;
+
+	return kfd;
+}
+
+bool kgd2kfd_device_init(struct kfd_dev *kfd,
+			 const struct kgd2kfd_shared_resources *gpu_resources)
+{
+	kfd->shared_resources = *gpu_resources;
+
+	kfd->init_complete = true;
+	dev_info(kfd_device, "added device (%x:%x)\n", kfd->pdev->vendor,
+		 kfd->pdev->device);
+
+	return true;
+}
+
+void kgd2kfd_device_exit(struct kfd_dev *kfd)
+{
+	kfree(kfd);
+}
+
+void kgd2kfd_suspend(struct kfd_dev *kfd)
+{
+	BUG_ON(kfd == NULL);
+}
+
+int kgd2kfd_resume(struct kfd_dev *kfd)
+{
+	BUG_ON(kfd == NULL);
+
+	return 0;
+}
+
+void kgd2kfd_interrupt(struct kfd_dev *dev, const void *ih_ring_entry)
+{
+}
diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_module.c b/drivers/gpu/drm/radeon/amdkfd/kfd_module.c
new file mode 100644
index 0000000..c7faac6
--- /dev/null
+++ b/drivers/gpu/drm/radeon/amdkfd/kfd_module.c
@@ -0,0 +1,98 @@
+/*
+ * 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 <linux/module.h>
+#include <linux/sched.h>
+#include <linux/notifier.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include "kfd_priv.h"
+
+#define KFD_DRIVER_AUTHOR	"AMD Inc. and others"
+
+#define KFD_DRIVER_DESC		"Standalone HSA driver for AMD's GPUs"
+#define KFD_DRIVER_DATE		"20140710"
+#define KFD_DRIVER_MAJOR	0
+#define KFD_DRIVER_MINOR	6
+#define KFD_DRIVER_PATCHLEVEL	2
+
+const struct kfd2kgd_calls *kfd2kgd;
+static const struct kgd2kfd_calls kgd2kfd = {
+	.exit		= kgd2kfd_exit,
+	.probe		= kgd2kfd_probe,
+	.device_init	= kgd2kfd_device_init,
+	.device_exit	= kgd2kfd_device_exit,
+	.interrupt	= kgd2kfd_interrupt,
+	.suspend	= kgd2kfd_suspend,
+	.resume		= kgd2kfd_resume,
+};
+
+bool kgd2kfd_init(unsigned interface_version,
+		  const struct kfd2kgd_calls *f2g,
+		  const struct kgd2kfd_calls **g2f)
+{
+	/* Only one interface version is supported, no kfd/kgd version skew allowed. */
+	if (interface_version != KFD_INTERFACE_VERSION)
+		return false;
+
+	kfd2kgd = f2g;
+	*g2f = &kgd2kfd;
+
+	return true;
+}
+EXPORT_SYMBOL(kgd2kfd_init);
+
+void kgd2kfd_exit(void)
+{
+}
+
+static int __init kfd_module_init(void)
+{
+	int err;
+
+	err = kfd_chardev_init();
+	if (err < 0)
+		goto err_ioctl;
+
+	dev_info(kfd_device, "Initialized module\n");
+
+	return 0;
+
+err_ioctl:
+	return err;
+}
+
+static void __exit kfd_module_exit(void)
+{
+	kfd_chardev_exit();
+	dev_info(kfd_device, "Removed module\n");
+}
+
+module_init(kfd_module_init);
+module_exit(kfd_module_exit);
+
+MODULE_AUTHOR(KFD_DRIVER_AUTHOR);
+MODULE_DESCRIPTION(KFD_DRIVER_DESC);
+MODULE_LICENSE("GPL and additional rights");
+MODULE_VERSION(__stringify(KFD_DRIVER_MAJOR) "."
+	       __stringify(KFD_DRIVER_MINOR) "."
+	       __stringify(KFD_DRIVER_PATCHLEVEL));
diff --git a/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h b/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h
new file mode 100644
index 0000000..05e892f
--- /dev/null
+++ b/drivers/gpu/drm/radeon/amdkfd/kfd_priv.h
@@ -0,0 +1,81 @@
+/*
+ * 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 KFD_PRIV_H_INCLUDED
+#define KFD_PRIV_H_INCLUDED
+
+#include <linux/hashtable.h>
+#include <linux/mmu_notifier.h>
+#include <linux/mutex.h>
+#include <linux/types.h>
+#include <linux/atomic.h>
+#include <linux/workqueue.h>
+#include <linux/spinlock.h>
+#include "../radeon_kfd.h"
+
+struct kfd_device_info {
+	const struct kfd_scheduler_class *scheduler_class;
+	unsigned int max_pasid_bits;
+	size_t ih_ring_entry_size;
+};
+
+struct kfd_dev {
+	struct kgd_dev *kgd;
+
+	const struct kfd_device_info *device_info;
+	struct pci_dev *pdev;
+
+	bool init_complete;
+
+	unsigned int id;		/* topology stub index */
+
+	struct kgd2kfd_shared_resources shared_resources;
+};
+
+/* KGD2KFD callbacks */
+void kgd2kfd_exit(void);
+struct kfd_dev *kgd2kfd_probe(struct kgd_dev *kgd, struct pci_dev *pdev);
+bool kgd2kfd_device_init(struct kfd_dev *kfd,
+			 const struct kgd2kfd_shared_resources *gpu_resources);
+void kgd2kfd_device_exit(struct kfd_dev *kfd);
+
+extern const struct kfd2kgd_calls *kfd2kgd;
+
+/* Character device interface */
+int kfd_chardev_init(void);
+void kfd_chardev_exit(void);
+struct device *kfd_chardev(void);
+
+/* Process data */
+struct kfd_process {
+};
+
+extern struct device *kfd_device;
+
+/* Interrupts */
+void kgd2kfd_interrupt(struct kfd_dev *dev, const void *ih_ring_entry);
+
+/* Power Management */
+void kgd2kfd_suspend(struct kfd_dev *dev);
+int kgd2kfd_resume(struct kfd_dev *dev);
+
+#endif
-- 
1.9.1

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