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10 | 10 | <uapi/linux/wmi.h> |
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11 | 11 | |
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12 | 12 | 1) To perform an SMBIOS call from userspace, you'll need to |
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13 | | - first determine the minimum size of the calling interface |
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14 | | - buffer for your machine. |
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15 | | - Platforms that contain larger buffers can return larger |
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16 | | - objects from the system firmware. |
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17 | | - Commonly this size is either 4k or 32k. |
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| 13 | + first determine the minimum size of the calling interface |
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| 14 | + buffer for your machine. |
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| 15 | + Platforms that contain larger buffers can return larger |
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| 16 | + objects from the system firmware. |
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| 17 | + Commonly this size is either 4k or 32k. |
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18 | 18 | |
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19 | | - To determine the size of the buffer read() a u64 dword from |
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20 | | - the WMI character device /dev/wmi/dell-smbios. |
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| 19 | + To determine the size of the buffer read() a u64 dword from |
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| 20 | + the WMI character device /dev/wmi/dell-smbios. |
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21 | 21 | |
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22 | 22 | 2) After you've determined the minimum size of the calling |
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23 | | - interface buffer, you can allocate a structure that represents |
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24 | | - the structure documented above. |
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| 23 | + interface buffer, you can allocate a structure that represents |
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| 24 | + the structure documented above. |
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25 | 25 | |
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26 | 26 | 3) In the 'length' object store the size of the buffer you |
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27 | | - determined above and allocated. |
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| 27 | + determined above and allocated. |
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28 | 28 | |
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29 | 29 | 4) In this buffer object, prepare as necessary for the SMBIOS |
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30 | | - call you're interested in. Typically SMBIOS buffers have |
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31 | | - "class", "select", and "input" defined to values that coincide |
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32 | | - with the data you are interested in. |
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33 | | - Documenting class/select/input values is outside of the scope |
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34 | | - of this documentation. Check with the libsmbios project for |
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35 | | - further documentation on these values. |
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| 30 | + call you're interested in. Typically SMBIOS buffers have |
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| 31 | + "class", "select", and "input" defined to values that coincide |
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| 32 | + with the data you are interested in. |
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| 33 | + Documenting class/select/input values is outside of the scope |
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| 34 | + of this documentation. Check with the libsmbios project for |
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| 35 | + further documentation on these values. |
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36 | 36 | |
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37 | 37 | 6) Run the call by using ioctl() as described in the header. |
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38 | 38 | |
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