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https://github.com/tiagovignatti/intel-gpu-tools.git
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6f0d8b011e
The sample usage is in reg_access.dpio_read(). We should add some semantics to the text files to detect DPIO registers, and do the right thing. Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
58 lines
1.1 KiB
Python
Executable File
58 lines
1.1 KiB
Python
Executable File
#!/usr/bin/env python3
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import chipset
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def read(reg):
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reg = int(reg, 16)
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val = chipset.intel_register_read(reg)
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return val
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def write(reg, val):
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chipset.intel_register_write(reg, val)
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def gen6_forcewake_get():
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write(0xa18c, 0x1)
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read("0xa180")
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def mt_forcewake_get():
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write(0xa188, 0x10001)
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read("0xa180")
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def vlv_forcewake_get():
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write(0x1300b0, 0x10001)
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read("0x1300b4")
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# don't be clever, just try all possibilities
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def get_wake():
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gen6_forcewake_get()
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mt_forcewake_get()
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vlv_forcewake_get()
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def dpio_read(reg):
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reg = int(reg, 16)
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val = chipset.intel_dpio_reg_read(reg)
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return val
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def init():
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pci_dev = chipset.intel_get_pci_device()
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ret = chipset.intel_register_access_init(pci_dev, 0)
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if ret != 0:
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print("Register access init failed");
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return False
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if chipset.intel_register_access_needs_wake():
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print("Forcing forcewake. Don't expect your system to work after this.")
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get_wake()
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return True
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if __name__ == "__main__":
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import sys
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if init() == False:
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sys.exit()
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reg = sys.argv[1]
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print(hex(read(reg)))
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chipset.intel_register_access_fini()
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