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| author | Ohad Sharabi <osharabi@habana.ai> | 2022-11-30 13:41:49 +0100 |
|---|---|---|
| committer | Oded Gabbay <ogabbay@kernel.org> | 2023-01-26 10:52:11 +0100 |
| commit | 54fcb384be6044ef17ec95a0aec0f86ad114b8d6 (patch) | |
| tree | f9d4fb5e24627b57cea1231d5b6d08014a1216ef /drivers/accel/habanalabs/common/pci/pci.c | |
| parent | habanalabs: define events to trace PCI LBW access (diff) | |
| download | linux-54fcb384be6044ef17ec95a0aec0f86ad114b8d6.tar.xz linux-54fcb384be6044ef17ec95a0aec0f86ad114b8d6.zip | |
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 '')
| -rw-r--r-- | drivers/accel/habanalabs/common/pci/pci.c | 10 |
1 files changed, 9 insertions, 1 deletions
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; |