Commit 54fcb384 authored by Ohad Sharabi's avatar Ohad Sharabi Committed by Oded Gabbay
Browse files

habanalabs: trace LBW reads/writes 



Add traces to LBW reads/writes.
This may be handy when debugging configuration failure or events when
tracking configuration flow.

Signed-off-by: default avatarOhad Sharabi <osharabi@habana.ai>
Reviewed-by: default avatarOded Gabbay <ogabbay@kernel.org>
Signed-off-by: default avatarOded Gabbay <ogabbay@kernel.org>
parent d5077a55

drivers/accel/habanalabs/common/device.c

+9 −1
Original line number Diff line number Diff line
@@ -2401,7 +2401,12 @@ void hl_device_fini(struct hl_device *hdev) 
 */

inline u32 hl_rreg(struct hl_device *hdev, u32 reg)

{

	return readl(hdev->rmmio + reg);

	u32 val = readl(hdev->rmmio + reg);



	if (unlikely(trace_habanalabs_rreg32_enabled()))

		trace_habanalabs_rreg32(hdev->dev, reg, val);



	return val;

}



/*
@@ -2416,6 +2421,9 @@ inline u32 hl_rreg(struct hl_device *hdev, u32 reg) 
 */

inline void hl_wreg(struct hl_device *hdev, u32 reg, u32 val)

{

	if (unlikely(trace_habanalabs_wreg32_enabled()))

		trace_habanalabs_wreg32(hdev->dev, reg, val);



	writel(val, hdev->rmmio + reg);

}

drivers/accel/habanalabs/common/pci/pci.c

+9 −1
Original line number Diff line number Diff line
@@ -10,6 +10,8 @@ 


#include <linux/pci.h>



#include <trace/events/habanalabs.h>



#define HL_PLDM_PCI_ELBI_TIMEOUT_MSEC	(HL_PCI_ELBI_TIMEOUT_MSEC * 100)



#define IATU_REGION_CTRL_REGION_EN_MASK		BIT(31)
@@ -120,6 +122,9 @@ int hl_pci_elbi_read(struct hl_device *hdev, u64 addr, u32 *data) 
	if ((val & PCI_CONFIG_ELBI_STS_MASK) == PCI_CONFIG_ELBI_STS_DONE) {

		pci_read_config_dword(pdev, mmPCI_CONFIG_ELBI_DATA, data);



		if (unlikely(trace_habanalabs_elbi_read_enabled()))

			trace_habanalabs_elbi_read(hdev->dev, (u32) addr, val);



		return 0;

	}
@@ -179,8 +184,11 @@ static int hl_pci_elbi_write(struct hl_device *hdev, u64 addr, u32 data) 
		usleep_range(300, 500);

	}



	if ((val & PCI_CONFIG_ELBI_STS_MASK) == PCI_CONFIG_ELBI_STS_DONE)

	if ((val & PCI_CONFIG_ELBI_STS_MASK) == PCI_CONFIG_ELBI_STS_DONE) {

		if (unlikely(trace_habanalabs_elbi_write_enabled()))

			trace_habanalabs_elbi_write(hdev->dev, (u32) addr, val);

		return 0;

	}



	if (val & PCI_CONFIG_ELBI_STS_ERR)

		return -EIO;