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habanalabs: trace LBW reads/writes

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

Signed-off-by: Ohad Sharabi <osharabi@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Ohad Sharabi 2022-11-30 14:41:49 +02:00 committed by Oded Gabbay
parent d5077a5500
commit 54fcb384be
2 changed files with 18 additions and 2 deletions
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10
drivers/accel/habanalabs/common/device.c
View File

@ -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);
}

10
drivers/accel/habanalabs/common/pci/pci.c
View File

@ -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;