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authorOhad Sharabi <osharabi@habana.ai>2022-11-30 15:41:49 +0300
committerOded Gabbay <ogabbay@kernel.org>2023-01-26 12:52:11 +0300
commit54fcb384be6044ef17ec95a0aec0f86ad114b8d6 (patch)
treef9d4fb5e24627b57cea1231d5b6d08014a1216ef /drivers/accel
parentd5077a55006c4af513e9b19acfa8e44b069a4fde (diff)
downloadlinux-54fcb384be6044ef17ec95a0aec0f86ad114b8d6.tar.xz
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: Ohad Sharabi <osharabi@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Diffstat (limited to 'drivers/accel')
-rw-r--r--drivers/accel/habanalabs/common/device.c10
-rw-r--r--drivers/accel/habanalabs/common/pci/pci.c10
2 files changed, 18 insertions, 2 deletions
diff --git a/drivers/accel/habanalabs/common/device.c b/drivers/accel/habanalabs/common/device.c
index 6a05ab3fda23..722a5beb0974 100644
--- a/drivers/accel/habanalabs/common/device.c
+++ b/drivers/accel/habanalabs/common/device.c
@@ -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);
}
diff --git a/drivers/accel/habanalabs/common/pci/pci.c b/drivers/accel/habanalabs/common/pci/pci.c
index 5fe3da5fba30..d1f4c695baf2 100644
--- a/drivers/accel/habanalabs/common/pci/pci.c
+++ b/drivers/accel/habanalabs/common/pci/pci.c
@@ -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;