3f720b21ec
There have been instances when the default size (1M) of the STB is not sufficient to get the complete traces of the failure. In such scenarios we can use a module_param to enable full trace that shall contain more debugging data. This is not a regular case and hence not enabling this capability by default. With this change, there will be two cases on how the driver fetches the stb data: 1) A special case (proposed now) - which is required only for certain platforms. Here, a new module param will be supplied to the driver that will have a special PMFW supporting enhanced dram sizes for getting the stb data. Without the special PMFW support, just setting the module param will not help to get the enhanced stb data. To adapt to this change, we will have a new amd_pmc_stb_handle_efr() to handle enhanced firmware reporting mechanism. Note that, since num_samples based r/w pointer offset calculation is not required for enhanced firmware reporting we will have this mailbox command sent only in case of regular STB cases. 2) Current code branch which fetches the stb data based on the parameters like the num_samples, fsize and the r/w pointer. Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Co-developed-by: Harsh Jain <Harsh.Jain@amd.com> Signed-off-by: Harsh Jain <Harsh.Jain@amd.com> Signed-off-by: Sanket Goswami <Sanket.Goswami@amd.com> Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> Link: https://lore.kernel.org/r/20231010145003.139932-3-Shyam-sundar.S-k@amd.com [ij: Renamed flex_arr -> stb_data_arr] Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>