diff options
| author | Adam Aharon <aaharon@habana.ai> | 2020-05-26 11:04:30 +0300 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2020-07-24 20:31:35 +0300 |
| commit | e8edded6939e4c194ab302d4913cb1a9319561d9 (patch) | |
| tree | 6ea4ff88e36c93918da57e71fdb8d30523734dc4 /drivers/misc/habanalabs/goya/goya.c | |
| parent | 6ced91170df88ff03b7d4c9ec87c185ebf8443be (diff) | |
| download | linux-e8edded6939e4c194ab302d4913cb1a9319561d9.tar.bz2 | |
habanalabs: calculate trace frequency from PLL
The profiler needs to know the PLL values for correctly showing the
profiling data. Because our firmware can use different PLL configurations,
we need to read the PLL values from the ASIC to pass them to the profiler.
Signed-off-by: Adam Aharon <aaharon@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/misc/habanalabs/goya/goya.c')
| -rw-r--r-- | drivers/misc/habanalabs/goya/goya.c | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c index ff9e8a31ced4..ff32a8fa7624 100644 --- a/drivers/misc/habanalabs/goya/goya.c +++ b/drivers/misc/habanalabs/goya/goya.c @@ -594,11 +594,36 @@ static void goya_qman0_set_security(struct hl_device *hdev, bool secure) static void goya_fetch_psoc_frequency(struct hl_device *hdev) { struct asic_fixed_properties *prop = &hdev->asic_prop; + u32 trace_freq = 0; + u32 pll_clk = 0; + u32 div_fctr = RREG32(mmPSOC_PCI_PLL_DIV_FACTOR_1); + u32 div_sel = RREG32(mmPSOC_PCI_PLL_DIV_SEL_1); + u32 nr = RREG32(mmPSOC_PCI_PLL_NR); + u32 nf = RREG32(mmPSOC_PCI_PLL_NF); + u32 od = RREG32(mmPSOC_PCI_PLL_OD); + + if (div_sel == DIV_SEL_REF_CLK || div_sel == DIV_SEL_DIVIDED_REF) { + if (div_sel == DIV_SEL_REF_CLK) + trace_freq = PLL_REF_CLK; + else + trace_freq = PLL_REF_CLK / (div_fctr + 1); + } else if (div_sel == DIV_SEL_PLL_CLK || + div_sel == DIV_SEL_DIVIDED_PLL) { + pll_clk = PLL_REF_CLK * (nf + 1) / ((nr + 1) * (od + 1)); + if (div_sel == DIV_SEL_PLL_CLK) + trace_freq = pll_clk; + else + trace_freq = pll_clk / (div_fctr + 1); + } else { + dev_warn(hdev->dev, + "Received invalid div select value: %d", div_sel); + } - prop->psoc_pci_pll_nr = RREG32(mmPSOC_PCI_PLL_NR); - prop->psoc_pci_pll_nf = RREG32(mmPSOC_PCI_PLL_NF); - prop->psoc_pci_pll_od = RREG32(mmPSOC_PCI_PLL_OD); - prop->psoc_pci_pll_div_factor = RREG32(mmPSOC_PCI_PLL_DIV_FACTOR_1); + prop->psoc_timestamp_frequency = trace_freq; + prop->psoc_pci_pll_nr = nr; + prop->psoc_pci_pll_nf = nf; + prop->psoc_pci_pll_od = od; + prop->psoc_pci_pll_div_factor = div_fctr; } int goya_late_init(struct hl_device *hdev) |