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habanalabs: add cdev index data member

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Instead of recalculating the cdev index, store it in a dedicated data
member. This data member is intended to be passed to other drivers using
the auxiliary bus infra and hence this new data member is necessary in
case that the calculation is changed in the future.

Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Omer Shpigelman 2022-08-04 17:32:30 +03:00 committed by Oded Gabbay
parent 78da23cb10
commit 273190d420
2 changed files with 9 additions and 5 deletions
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10
drivers/misc/habanalabs/common/device.c
View file

@ -1730,7 +1730,9 @@ int hl_device_init(struct hl_device *hdev, struct class *hclass)
char *name;
bool add_cdev_sysfs_on_err = false;
name = kasprintf(GFP_KERNEL, "hl%d", hdev->id / 2);
hdev->cdev_idx = hdev->id / 2;
name = kasprintf(GFP_KERNEL, "hl%d", hdev->cdev_idx);
if (!name) {
rc = -ENOMEM;
goto out_disabled;
@ -1745,7 +1747,7 @@ int hl_device_init(struct hl_device *hdev, struct class *hclass)
if (rc)
goto out_disabled;
name = kasprintf(GFP_KERNEL, "hl_controlD%d", hdev->id / 2);
name = kasprintf(GFP_KERNEL, "hl_controlD%d", hdev->cdev_idx);
if (!name) {
rc = -ENOMEM;
goto free_dev;
@ -2023,10 +2025,10 @@ int hl_device_init(struct hl_device *hdev, struct class *hclass)
if (hdev->pdev)
dev_err(&hdev->pdev->dev,
"Failed to initialize hl%d. Device is NOT usable !\n",
hdev->id / 2);
hdev->cdev_idx);
else
pr_err("Failed to initialize hl%d. Device is NOT usable !\n",
hdev->id / 2);
hdev->cdev_idx);
return rc;
}

4
drivers/misc/habanalabs/common/habanalabs.h
View file

@ -3129,7 +3129,8 @@ struct hl_reset_info {
* @edma_binning: contains mask of edma engines that is received from the f/w which
* indicates which edma engines are binned-out
* @id: device minor.
* @id_control: minor of the control device
* @id_control: minor of the control device.
* @cdev_idx: char device index. Used for setting its name.
* @cpu_pci_msb_addr: 50-bit extension bits for the device CPU's 40-bit
* addresses.
* @is_in_dram_scrub: true if dram scrub operation is on going.
@ -3289,6 +3290,7 @@ struct hl_device {
u32 edma_binning;
u16 id;
u16 id_control;
u16 cdev_idx;
u16 cpu_pci_msb_addr;
u8 is_in_dram_scrub;
u8 disabled;