ADDRESSING - THEORY OF OPERATIONS(9)

💅 Addressing - theory of operations 💅

okay bestie, this is Addressing ...f operations(9), and the manual name is Kernel API Manual — so yeah, we're in kernel-API land. Let's get into the addressing theory of operations, because the WIL6210 card has several buses and the memory situation is a whole vibe ✨.

There are several buses present on the WIL6210 card. Same memory areas are visible at different address on the different buses. There are 3 main bus masters:

• MAC CPU (ucode) 🧠
• User CPU (firmware) 💾
• AHB (host) 🏠

On the PCI bus, there is one BAR (BAR0) of 2Mb size, exposing AHB addresses starting from 0x880000 💅.

Internally, firmware uses addresses that allow faster access but are invisible from the host. To read from these addresses, alternative AHB address must be used. iykyk 🦋

👀 SEE ALSO 👀

• Kernel file ./drivers/net/wireless/ath/wil6210/wmi.c — WMI event receiving - theory of operations(9)
• wmi_addr_remap(9)
• wil_find_fw_mapping(9)
• wmi_buffer_block(9)
• wmi_rxon(9)

source/version line is ./drivers/net/wireless/ath/wil... and the date is October 2026 — periodt, bye bestie 🫶💖