diff options
author | Oded Gabbay | 2014-07-16 20:08:55 +0200 |
---|---|---|
committer | Oded Gabbay | 2014-07-16 20:08:55 +0200 |
commit | 4a488a7ad71401169cecee75dc94bcce642e2c53 (patch) | |
tree | 5238eb2652e22d7bb8ce83906ed96db50c490a15 | |
parent | amdkfd: Add IOCTL set definitions of amdkfd (diff) | |
download | kernel-qcow2-linux-4a488a7ad71401169cecee75dc94bcce642e2c53.tar.gz kernel-qcow2-linux-4a488a7ad71401169cecee75dc94bcce642e2c53.tar.xz kernel-qcow2-linux-4a488a7ad71401169cecee75dc94bcce642e2c53.zip |
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.
v3: Move bool field to the end of structure, removed the pmc ioctls and added
a meaningful error message for ioctl error.
v5:
Create a new folder drm/amd and move amdkfd from drm/radeon/ to drm/amd/
Remove scheduler_class from kfd_priv.h as it was never used
Add skeleton implementation of the Get Version IOCTL
v6:
Update module version to the correct number and remove the "default m" from the
Kconfig file
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>
-rw-r--r-- | drivers/gpu/drm/Kconfig | 2 | ||||
-rw-r--r-- | drivers/gpu/drm/Makefile | 1 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdkfd/Kconfig | 9 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdkfd/Makefile | 9 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 210 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_device.c | 130 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_module.c | 101 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 81 |
8 files changed, 543 insertions, 0 deletions
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index e3b4b0f02b3d..37c5a6ea5bdf 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -200,3 +200,5 @@ source "drivers/gpu/drm/tegra/Kconfig" source "drivers/gpu/drm/panel/Kconfig" source "drivers/gpu/drm/sti/Kconfig" + +source "drivers/gpu/drm/amd/amdkfd/Kconfig" diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index c3cf64ce2891..dd9d35bfa690 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -65,3 +65,4 @@ obj-$(CONFIG_DRM_STI) += sti/ obj-y += i2c/ obj-y += panel/ obj-y += bridge/ +obj-$(CONFIG_HSA_AMD) += amd/amdkfd/ diff --git a/drivers/gpu/drm/amd/amdkfd/Kconfig b/drivers/gpu/drm/amd/amdkfd/Kconfig new file mode 100644 index 000000000000..e13c67c8d2c0 --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/Kconfig @@ -0,0 +1,9 @@ +# +# Heterogenous system architecture configuration +# + +config HSA_AMD + tristate "HSA kernel driver for AMD GPU devices" + depends on (DRM_RADEON || DRM_AMDGPU) && AMD_IOMMU_V2 && X86_64 + help + Enable this if you want to use HSA features on AMD GPU devices. diff --git a/drivers/gpu/drm/amd/amdkfd/Makefile b/drivers/gpu/drm/amd/amdkfd/Makefile new file mode 100644 index 000000000000..d875ce4dbda6 --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/Makefile @@ -0,0 +1,9 @@ +# +# Makefile for Heterogenous System Architecture support for AMD GPU devices +# + +ccflags-y := -Iinclude/drm -Idrivers/gpu/drm/amd/include/ + +amdkfd-y := kfd_module.o kfd_device.o kfd_chardev.o + +obj-$(CONFIG_HSA_AMD) += amdkfd.o diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c new file mode 100644 index 000000000000..d7c32eb7d16a --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -0,0 +1,210 @@ +/* + * 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_get_version(struct file *filep, struct kfd_process *p, + void __user *arg) +{ + return -ENODEV; +} + +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(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_GET_VERSION: + err = kfd_ioctl_get_version(filep, process, (void __user *)arg); + break; + 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; + + 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 for ioctl cmd 0x%x (#%d)\n", + err, cmd, _IOC_NR(cmd)); + + return err; +} diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c new file mode 100644 index 000000000000..d81a58eeec29 --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.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 <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/amd/amdkfd/kfd_module.c b/drivers/gpu/drm/amd/amdkfd/kfd_module.c new file mode 100644 index 000000000000..9519f33bd59c --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_module.c @@ -0,0 +1,101 @@ +/* + * 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 "20141113" +#define KFD_DRIVER_MAJOR 0 +#define KFD_DRIVER_MINOR 7 +#define KFD_DRIVER_PATCHLEVEL 0 + +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/amd/amdkfd/kfd_priv.h b/drivers/gpu/drm/amd/amdkfd/kfd_priv.h new file mode 100644 index 000000000000..219a0d3340f6 --- /dev/null +++ b/drivers/gpu/drm/amd/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 <kgd_kfd_interface.h> + +struct kfd_device_info { + 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; + + unsigned int id; /* topology stub index */ + + struct kgd2kfd_shared_resources shared_resources; + + bool init_complete; + +}; + +/* 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 |