linux-kernel - [PATCH 1/9] habanalabs: move memory_scrub

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Message-Id: <20220623204212.1628709-1-ogabbay@kernel.org>
Date:   Thu, 23 Jun 2022 23:42:04 +0300
From:   Oded Gabbay <ogabbay@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     Dafna Hirschfeld <dhirschfeld@...ana.ai>
Subject: [PATCH 1/9] habanalabs: move memory_scrub_val to hdev struct

From: Dafna Hirschfeld <dhirschfeld@...ana.ai>

move the field memory_scrub_val from struct hl_dbg_device_entry
to struct hl_device. This is because we want to use
this field also if debugfs is off.

Signed-off-by: Dafna Hirschfeld <dhirschfeld@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
---
 drivers/misc/habanalabs/common/debugfs.c    | 4 ++--
 drivers/misc/habanalabs/common/habanalabs.h | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/misc/habanalabs/common/debugfs.c b/drivers/misc/habanalabs/common/debugfs.c
index c6744bfc6da4..0f07c2de986b 100644
--- a/drivers/misc/habanalabs/common/debugfs.c
+++ b/drivers/misc/habanalabs/common/debugfs.c
@@ -543,7 +543,7 @@ static ssize_t hl_memory_scrub(struct file *f, const char __user *buf,
 {
 	struct hl_dbg_device_entry *entry = file_inode(f)->i_private;
 	struct hl_device *hdev = entry->hdev;
-	u64 val = entry->memory_scrub_val;
+	u64 val = hdev->memory_scrub_val;
 	int rc;
 
 	if (!hl_device_operational(hdev, NULL)) {
@@ -1516,7 +1516,7 @@ void hl_debugfs_add_device(struct hl_device *hdev)
 	debugfs_create_x64("memory_scrub_val",
 				0644,
 				dev_entry->root,
-				&dev_entry->memory_scrub_val);
+				&hdev->memory_scrub_val);
 
 	debugfs_create_file("memory_scrub",
 				0200,
diff --git a/drivers/misc/habanalabs/common/habanalabs.h b/drivers/misc/habanalabs/common/habanalabs.h
index 94893305b928..931fa7092646 100644
--- a/drivers/misc/habanalabs/common/habanalabs.h
+++ b/drivers/misc/habanalabs/common/habanalabs.h
@@ -2065,7 +2065,6 @@ struct hl_debugfs_entry {
  * @addr: next address to read/write from/to in read/write32.
  * @mmu_addr: next virtual address to translate to physical address in mmu_show.
  * @userptr_lookup: the target user ptr to look up for on demand.
- * @memory_scrub_val: the value to which the dram will be scrubbed to using cb scrub_device_dram
  * @mmu_asid: ASID to use while translating in mmu_show.
  * @state_dump_head: index of the latest state dump
  * @i2c_bus: generic u8 debugfs file for bus value to use in i2c_data_read.
@@ -2096,7 +2095,6 @@ struct hl_dbg_device_entry {
 	u64				addr;
 	u64				mmu_addr;
 	u64				userptr_lookup;
-	u64				memory_scrub_val;
 	u32				mmu_asid;
 	u32				state_dump_head;
 	u8				i2c_bus;
@@ -2797,6 +2795,7 @@ struct hl_reset_info {
  * @stream_master_qid_arr: pointer to array with QIDs of master streams.
  * @fw_major_version: major version of current loaded preboot
  * @dram_used_mem: current DRAM memory consumption.
+ * @memory_scrub_val: the value to which the dram will be scrubbed to using cb scrub_device_dram
  * @timeout_jiffies: device CS timeout value.
  * @max_power: the max power of the device, as configured by the sysadmin. This
  *             value is saved so in case of hard-reset, the driver will restore
@@ -2942,6 +2941,7 @@ struct hl_device {
 	u32				*stream_master_qid_arr;
 	u32				fw_major_version;
 	atomic64_t			dram_used_mem;
+	u64				memory_scrub_val;
 	u64				timeout_jiffies;
 	u64				max_power;
 	u64				boot_error_status_mask;
-- 
2.25.1