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From 39beb722642c428d4f7ca3b3b44031ab21a431d0 Mon Sep 17 00:00:00 2001
From: Oak Zeng <Oak.Zeng@amd.com>
Date: Mon, 6 May 2019 22:11:14 -0500
Subject: [PATCH 2785/2940] drm/amdkfd: New IOCTL to allocate queue GWS
Add a new kfd ioctl to allocate queue GWS. Queue
GWS is released on queue destroy.
Change-Id: I60153c26a577992ad873e4292e759e5c3d5bbd15
Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
---
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 29 +++++++++++++++++++++++-
include/uapi/linux/kfd_ioctl.h | 18 +++++++++++++++
2 files changed, 46 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 94e5f33ae9d9..aa5243546ae1 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -1606,6 +1606,31 @@ static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep,
return err;
}
+static int kfd_ioctl_alloc_queue_gws(struct file *filep,
+ struct kfd_process *p, void *data)
+{
+ int retval;
+ struct kfd_ioctl_alloc_queue_gws_args *args = data;
+ struct kfd_dev *dev = NULL;
+
+ if (!hws_gws_support ||
+ dev->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS)
+ return -EINVAL;
+
+ dev = kfd_device_by_id(args->gpu_id);
+ if (!dev) {
+ pr_debug("Could not find gpu id 0x%x\n", args->gpu_id);
+ return -EINVAL;
+ }
+
+ mutex_lock(&p->mutex);
+ retval = pqm_set_gws(&p->pqm, args->queue_id, args->num_gws ? dev->gws : NULL);
+ mutex_unlock(&p->mutex);
+
+ args->first_gws = 0;
+ return retval;
+}
+
static int kfd_ioctl_get_dmabuf_info(struct file *filep,
struct kfd_process *p, void *data)
{
@@ -2870,6 +2895,9 @@ static const struct amdkfd_ioctl_desc amdkfd_ioctls[] = {
AMDKFD_IOCTL_DEF(AMDKFD_IOC_IMPORT_DMABUF,
kfd_ioctl_import_dmabuf, 0),
+ AMDKFD_IOCTL_DEF(AMDKFD_IOC_ALLOC_QUEUE_GWS,
+ kfd_ioctl_alloc_queue_gws, 0),
+
AMDKFD_IOCTL_DEF(AMDKFD_IOC_IPC_IMPORT_HANDLE,
kfd_ioctl_ipc_import_handle, 0),
@@ -2881,7 +2909,6 @@ static const struct amdkfd_ioctl_desc amdkfd_ioctls[] = {
AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_TRAP,
kfd_ioctl_dbg_set_debug_trap, 0),
-
};
#define AMDKFD_CORE_IOCTL_COUNT ARRAY_SIZE(amdkfd_ioctls)
diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h
index 8f19d8524b4f..b2e1aca6eca0 100644
--- a/include/uapi/linux/kfd_ioctl.h
+++ b/include/uapi/linux/kfd_ioctl.h
@@ -475,6 +475,21 @@ enum kfd_mmio_remap {
KFD_MMIO_REMAP_HDP_REG_FLUSH_CNTL = 4,
};
+/* Allocate GWS for specific queue
+ *
+ * @gpu_id: device identifier
+ * @queue_id: queue's id that GWS is allocated for
+ * @num_gws: how many GWS to allocate
+ * @first_gws: index of the first GWS allocated.
+ * only support contiguous GWS allocation
+ */
+struct kfd_ioctl_alloc_queue_gws_args {
+ __u32 gpu_id; /* to KFD */
+ __u32 queue_id; /* to KFD */
+ __u32 num_gws; /* to KFD */
+ __u32 first_gws; /* from KFD */
+};
+
struct kfd_ioctl_get_dmabuf_info_args {
__u64 size; /* from KFD */
__u64 metadata_ptr; /* to KFD */
@@ -634,6 +649,9 @@ struct kfd_ioctl_cross_memory_copy_args {
#define AMDKFD_IOC_IMPORT_DMABUF \
AMDKFD_IOWR(0x1D, struct kfd_ioctl_import_dmabuf_args)
+#define AMDKFD_IOC_ALLOC_QUEUE_GWS \
+ AMDKFD_IOWR(0x1E, struct kfd_ioctl_alloc_queue_gws_args)
+
#define AMDKFD_IOC_IPC_IMPORT_HANDLE \
AMDKFD_IOWR(0x1E, struct kfd_ioctl_ipc_import_handle_args)
--
2.17.1
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