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Message-Id: <20200910181524.21460-9-oded.gabbay@gmail.com>
Date: Thu, 10 Sep 2020 21:15:22 +0300
From: Oded Gabbay <oded.gabbay@...il.com>
To: linux-kernel@...r.kernel.org, SW_Drivers@...ana.ai
Cc: gregkh@...uxfoundation.org, Tomer Tayar <ttayar@...ana.ai>
Subject: [PATCH 09/11] habanalabs: Save context in a command buffer object
From: Tomer Tayar <ttayar@...ana.ai>
Future changes require using a context while handling a command buffer,
and thus need to save the context in the command buffer object.
Signed-off-by: Tomer Tayar <ttayar@...ana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@...il.com>
Signed-off-by: Oded Gabbay <oded.gabbay@...il.com>
---
.../misc/habanalabs/common/command_buffer.c | 22 +++++++++++--------
drivers/misc/habanalabs/common/debugfs.c | 2 +-
drivers/misc/habanalabs/common/habanalabs.h | 9 ++++----
drivers/misc/habanalabs/gaudi/gaudi.c | 10 +++++----
drivers/misc/habanalabs/goya/goya.c | 10 +++++----
5 files changed, 31 insertions(+), 22 deletions(-)
diff --git a/drivers/misc/habanalabs/common/command_buffer.c b/drivers/misc/habanalabs/common/command_buffer.c
index ba63cee74050..0cb556fb4a8b 100644
--- a/drivers/misc/habanalabs/common/command_buffer.c
+++ b/drivers/misc/habanalabs/common/command_buffer.c
@@ -47,6 +47,8 @@ static void cb_release(struct kref *ref)
hl_debugfs_remove_cb(cb);
+ hl_ctx_put(cb->ctx);
+
cb_do_release(hdev, cb);
}
@@ -107,11 +109,12 @@ static struct hl_cb *hl_cb_alloc(struct hl_device *hdev, u32 cb_size,
}
int hl_cb_create(struct hl_device *hdev, struct hl_cb_mgr *mgr,
- u32 cb_size, u64 *handle, int ctx_id, bool internal_cb)
+ struct hl_ctx *ctx, u32 cb_size, bool internal_cb,
+ u64 *handle)
{
struct hl_cb *cb;
bool alloc_new_cb = true;
- int rc;
+ int rc, ctx_id = ctx->asid;
/*
* Can't use generic function to check this because of special case
@@ -163,7 +166,8 @@ int hl_cb_create(struct hl_device *hdev, struct hl_cb_mgr *mgr,
}
cb->hdev = hdev;
- cb->ctx_id = ctx_id;
+ cb->ctx = ctx;
+ hl_ctx_get(hdev, cb->ctx);
spin_lock(&mgr->cb_lock);
rc = idr_alloc(&mgr->cb_handles, cb, 1, 0, GFP_ATOMIC);
@@ -191,6 +195,7 @@ int hl_cb_create(struct hl_device *hdev, struct hl_cb_mgr *mgr,
return 0;
release_cb:
+ hl_ctx_put(cb->ctx);
cb_do_release(hdev, cb);
out_err:
*handle = 0;
@@ -250,9 +255,8 @@ int hl_cb_ioctl(struct hl_fpriv *hpriv, void *data)
args->in.cb_size, HL_MAX_CB_SIZE);
rc = -EINVAL;
} else {
- rc = hl_cb_create(hdev, &hpriv->cb_mgr,
- args->in.cb_size, &handle,
- hpriv->ctx->asid, false);
+ rc = hl_cb_create(hdev, &hpriv->cb_mgr, hpriv->ctx,
+ args->in.cb_size, false, &handle);
}
memset(args, 0, sizeof(*args));
@@ -424,7 +428,7 @@ void hl_cb_mgr_fini(struct hl_device *hdev, struct hl_cb_mgr *mgr)
if (kref_put(&cb->refcount, cb_release) != 1)
dev_err(hdev->dev,
"CB %d for CTX ID %d is still alive\n",
- id, cb->ctx_id);
+ id, cb->ctx->asid);
}
idr_destroy(&mgr->cb_handles);
@@ -437,8 +441,8 @@ struct hl_cb *hl_cb_kernel_create(struct hl_device *hdev, u32 cb_size,
struct hl_cb *cb;
int rc;
- rc = hl_cb_create(hdev, &hdev->kernel_cb_mgr, cb_size, &cb_handle,
- HL_KERNEL_ASID_ID, internal_cb);
+ rc = hl_cb_create(hdev, &hdev->kernel_cb_mgr, hdev->kernel_ctx, cb_size,
+ internal_cb, &cb_handle);
if (rc) {
dev_err(hdev->dev,
"Failed to allocate CB for the kernel driver %d\n", rc);
diff --git a/drivers/misc/habanalabs/common/debugfs.c b/drivers/misc/habanalabs/common/debugfs.c
index 7b1fb49c3501..569d054a6b06 100644
--- a/drivers/misc/habanalabs/common/debugfs.c
+++ b/drivers/misc/habanalabs/common/debugfs.c
@@ -111,7 +111,7 @@ static int command_buffers_show(struct seq_file *s, void *data)
}
seq_printf(s,
" %03llu %d 0x%08x %d %d %d\n",
- cb->id, cb->ctx_id, cb->size,
+ cb->id, cb->ctx->asid, cb->size,
kref_read(&cb->refcount),
cb->mmap, cb->cs_cnt);
}
diff --git a/drivers/misc/habanalabs/common/habanalabs.h b/drivers/misc/habanalabs/common/habanalabs.h
index 8ef61926ed3b..88c68b664ef6 100644
--- a/drivers/misc/habanalabs/common/habanalabs.h
+++ b/drivers/misc/habanalabs/common/habanalabs.h
@@ -417,6 +417,7 @@ struct hl_cb_mgr {
* struct hl_cb - describes a Command Buffer.
* @refcount: reference counter for usage of the CB.
* @hdev: pointer to device this CB belongs to.
+ * @ctx: pointer to the CB owner's context.
* @lock: spinlock to protect mmap/cs flows.
* @debugfs_list: node in debugfs list of command buffers.
* @pool_list: node in pool list of command buffers.
@@ -426,7 +427,6 @@ struct hl_cb_mgr {
* @mmap_size: Holds the CB's size that was mmaped.
* @size: holds the CB's size.
* @cs_cnt: holds number of CS that this CB participates in.
- * @ctx_id: holds the ID of the owner's context.
* @mmap: true if the CB is currently mmaped to user.
* @is_pool: true if CB was acquired from the pool, false otherwise.
* @is_internal: internaly allocated
@@ -434,6 +434,7 @@ struct hl_cb_mgr {
struct hl_cb {
struct kref refcount;
struct hl_device *hdev;
+ struct hl_ctx *ctx;
spinlock_t lock;
struct list_head debugfs_list;
struct list_head pool_list;
@@ -443,7 +444,6 @@ struct hl_cb {
u32 mmap_size;
u32 size;
u32 cs_cnt;
- u32 ctx_id;
u8 mmap;
u8 is_pool;
u8 is_internal;
@@ -1838,8 +1838,9 @@ void hl_sysfs_fini(struct hl_device *hdev);
int hl_hwmon_init(struct hl_device *hdev);
void hl_hwmon_fini(struct hl_device *hdev);
-int hl_cb_create(struct hl_device *hdev, struct hl_cb_mgr *mgr, u32 cb_size,
- u64 *handle, int ctx_id, bool internal_cb);
+int hl_cb_create(struct hl_device *hdev, struct hl_cb_mgr *mgr,
+ struct hl_ctx *ctx, u32 cb_size, bool internal_cb,
+ u64 *handle);
int hl_cb_destroy(struct hl_device *hdev, struct hl_cb_mgr *mgr, u64 cb_handle);
int hl_cb_mmap(struct hl_fpriv *hpriv, struct vm_area_struct *vma);
struct hl_cb *hl_cb_get(struct hl_device *hdev, struct hl_cb_mgr *mgr,
diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c
index bf010ff31ced..b51cc6c1d541 100644
--- a/drivers/misc/habanalabs/gaudi/gaudi.c
+++ b/drivers/misc/habanalabs/gaudi/gaudi.c
@@ -4114,8 +4114,9 @@ static int gaudi_parse_cb_mmu(struct hl_device *hdev,
parser->patched_cb_size = parser->user_cb_size +
sizeof(struct packet_msg_prot) * 2;
- rc = hl_cb_create(hdev, &hdev->kernel_cb_mgr, parser->patched_cb_size,
- &patched_cb_handle, HL_KERNEL_ASID_ID, false);
+ rc = hl_cb_create(hdev, &hdev->kernel_cb_mgr, hdev->kernel_ctx,
+ parser->patched_cb_size, false,
+ &patched_cb_handle);
if (rc) {
dev_err(hdev->dev,
@@ -4187,8 +4188,9 @@ static int gaudi_parse_cb_no_mmu(struct hl_device *hdev,
if (rc)
goto free_userptr;
- rc = hl_cb_create(hdev, &hdev->kernel_cb_mgr, parser->patched_cb_size,
- &patched_cb_handle, HL_KERNEL_ASID_ID, false);
+ rc = hl_cb_create(hdev, &hdev->kernel_cb_mgr, hdev->kernel_ctx,
+ parser->patched_cb_size, false,
+ &patched_cb_handle);
if (rc) {
dev_err(hdev->dev,
"Failed to allocate patched CB for DMA CS %d\n", rc);
diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c
index 6f831cc54d37..6c81a4b148de 100644
--- a/drivers/misc/habanalabs/goya/goya.c
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -3810,8 +3810,9 @@ static int goya_parse_cb_mmu(struct hl_device *hdev,
parser->patched_cb_size = parser->user_cb_size +
sizeof(struct packet_msg_prot) * 2;
- rc = hl_cb_create(hdev, &hdev->kernel_cb_mgr, parser->patched_cb_size,
- &patched_cb_handle, HL_KERNEL_ASID_ID, false);
+ rc = hl_cb_create(hdev, &hdev->kernel_cb_mgr, hdev->kernel_ctx,
+ parser->patched_cb_size, false,
+ &patched_cb_handle);
if (rc) {
dev_err(hdev->dev,
@@ -3883,8 +3884,9 @@ static int goya_parse_cb_no_mmu(struct hl_device *hdev,
if (rc)
goto free_userptr;
- rc = hl_cb_create(hdev, &hdev->kernel_cb_mgr, parser->patched_cb_size,
- &patched_cb_handle, HL_KERNEL_ASID_ID, false);
+ rc = hl_cb_create(hdev, &hdev->kernel_cb_mgr, hdev->kernel_ctx,
+ parser->patched_cb_size, false,
+ &patched_cb_handle);
if (rc) {
dev_err(hdev->dev,
"Failed to allocate patched CB for DMA CS %d\n", rc);
--
2.17.1
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