habanalabs: add debugfs support

This patch adds debugfs support to the driver. It allows the user-space to
display information that is contained in the internal structures of the
driver, such as:
- active command submissions
- active user virtual memory mappings
- number of allocated command buffers

It also enables the user to perform reads and writes through Goya's PCI
bars.

Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/misc/habanalabs/goya/goyaP.h b/drivers/misc/habanalabs/goya/goyaP.h
index fa6ef506a638..7dc324e4e268 100644
--- a/drivers/misc/habanalabs/goya/goyaP.h
+++ b/drivers/misc/habanalabs/goya/goyaP.h
@@ -165,6 +165,10 @@ struct goya_device {
 	u32		hw_cap_initialized;
 };
 
+int goya_debugfs_i2c_read(struct hl_device *hdev, u8 i2c_bus,
+			u8 i2c_addr, u8 i2c_reg, u32 *val);
+int goya_debugfs_i2c_write(struct hl_device *hdev, u8 i2c_bus,
+			u8 i2c_addr, u8 i2c_reg, u32 val);
 int goya_test_cpu_queue(struct hl_device *hdev);
 int goya_send_cpu_message(struct hl_device *hdev, u32 *msg, u16 len,
 				u32 timeout, long *result);
@@ -175,6 +179,7 @@ long goya_get_fan_speed(struct hl_device *hdev, int sensor_index, u32 attr);
 long goya_get_pwm_info(struct hl_device *hdev, int sensor_index, u32 attr);
 void goya_set_pwm_info(struct hl_device *hdev, int sensor_index, u32 attr,
 			long value);
+void goya_debugfs_led_set(struct hl_device *hdev, u8 led, u8 state);
 void goya_set_pll_profile(struct hl_device *hdev, enum hl_pll_frequency freq);
 void goya_add_device_attr(struct hl_device *hdev,
 			struct attribute_group *dev_attr_grp);