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drm/amdkfd: Implement image tiling mode support v2 

v2: Removed hole in ioctl number space

Signed-off-by: Yong Zhao <yong.zhao@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>
This commit is contained in:
Yong Zhao 2017-08-15 23:00:22 -04:00 committed by Oded Gabbay
parent fb31a0c92f
commit 5d71dbc3a5
2 changed files with 70 additions and 1 deletions
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43
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
View File

@ -883,6 +883,46 @@ bind_process_to_device_fail:
return err;
}
static int kfd_ioctl_get_tile_config(struct file *filep,
struct kfd_process *p, void *data)
{
struct kfd_ioctl_get_tile_config_args *args = data;
struct kfd_dev *dev;
struct tile_config config;
int err = 0;
dev = kfd_device_by_id(args->gpu_id);
dev->kfd2kgd->get_tile_config(dev->kgd, &config);
args->gb_addr_config = config.gb_addr_config;
args->num_banks = config.num_banks;
args->num_ranks = config.num_ranks;
if (args->num_tile_configs > config.num_tile_configs)
args->num_tile_configs = config.num_tile_configs;
err = copy_to_user((void __user *)args->tile_config_ptr,
config.tile_config_ptr,
args->num_tile_configs * sizeof(uint32_t));
if (err) {
args->num_tile_configs = 0;
return -EFAULT;
}
if (args->num_macro_tile_configs > config.num_macro_tile_configs)
args->num_macro_tile_configs =
config.num_macro_tile_configs;
err = copy_to_user((void __user *)args->macro_tile_config_ptr,
config.macro_tile_config_ptr,
args->num_macro_tile_configs * sizeof(uint32_t));
if (err) {
args->num_macro_tile_configs = 0;
return -EFAULT;
}
return 0;
}
#define AMDKFD_IOCTL_DEF(ioctl, _func, _flags) \
[_IOC_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, \
.cmd_drv = 0, .name = #ioctl}
@ -939,6 +979,9 @@ static const struct amdkfd_ioctl_desc amdkfd_ioctls[] = {
AMDKFD_IOCTL_DEF(AMDKFD_IOC_SET_SCRATCH_BACKING_VA,
kfd_ioctl_set_scratch_backing_va, 0),
AMDKFD_IOCTL_DEF(AMDKFD_IOC_GET_TILE_CONFIG,
kfd_ioctl_get_tile_config, 0)
};
#define AMDKFD_CORE_IOCTL_COUNT ARRAY_SIZE(amdkfd_ioctls)

28
include/uapi/linux/kfd_ioctl.h
View File

@ -238,6 +238,29 @@ struct kfd_ioctl_set_scratch_backing_va_args {
uint32_t pad;
};
struct kfd_ioctl_get_tile_config_args {
/* to KFD: pointer to tile array */
uint64_t tile_config_ptr;
/* to KFD: pointer to macro tile array */
uint64_t macro_tile_config_ptr;
/* to KFD: array size allocated by user mode
* from KFD: array size filled by kernel
*/
uint32_t num_tile_configs;
/* to KFD: array size allocated by user mode
* from KFD: array size filled by kernel
*/
uint32_t num_macro_tile_configs;
uint32_t gpu_id; /* to KFD */
uint32_t gb_addr_config; /* from KFD */
uint32_t num_banks; /* from KFD */
uint32_t num_ranks; /* from KFD */
/* struct size can be extended later if needed
* without breaking ABI compatibility
*/
};
#define AMDKFD_IOCTL_BASE 'K'
#define AMDKFD_IO(nr) _IO(AMDKFD_IOCTL_BASE, nr)
#define AMDKFD_IOR(nr, type) _IOR(AMDKFD_IOCTL_BASE, nr, type)
@ -295,7 +318,10 @@ struct kfd_ioctl_set_scratch_backing_va_args {
#define AMDKFD_IOC_SET_SCRATCH_BACKING_VA \
AMDKFD_IOWR(0x11, struct kfd_ioctl_set_scratch_backing_va_args)
#define AMDKFD_IOC_GET_TILE_CONFIG \
AMDKFD_IOWR(0x12, struct kfd_ioctl_get_tile_config_args)
#define AMDKFD_COMMAND_START 0x01
#define AMDKFD_COMMAND_END 0x12
#define AMDKFD_COMMAND_END 0x13
#endif