[PATCH RFC wireless-next 0/4] wifi: b43: AC microcode TX and RX formats (series 3/4)

[Andreas Wendleder <gonsolo@gmail.com>]

The TX descriptor, TX status, RX header and A-MPDU handling of the AC
microcode, gated on the microcode revision. Only revision 832 has been
tested; the layouts of 784 and 928 are expected to match but are not
verified. Based on series 2/4.

Where the values come from: the register sequences and table contents were
taken from Broadcom's wl driver running on this MacBook, by tracing its
register accesses (bpftrace on wl's MMIO accessors), and reduced to what
the hardware needs. Parts come from Alessio Ferri's AC-PHY work (the PHY
init sequence, the 40 and 80 MHz coefficient tables, a TX gain table, the
Farrow resampler formula, the VHT fields of the TX descriptor, register
and table names), and some formats follow brcmsmac.
The result was tested on the hardware as described below.

Each patch compiles on its own (kernel 7.2.10 headers). The four series
together were run on a MacBookAir6,1 (14e4:43a0, BCM4360, core revision 42,
microcode 832.127, 2 of 3 chains wired) on top of v7.3-rc5's b43. The AC PHY
only comes with series 4, so the earlier series cannot be exercised on this
hardware alone.

Andreas Wendleder (4):
  wifi: b43: 11ac chanspec for the AC microcode
  wifi: b43: TX descriptor and TX status for the AC microcode
  wifi: b43: RX header handling for the AC microcode
  wifi: b43: A-MPDU for the AC microcode

 drivers/net/wireless/broadcom/b43/dma.c       |  61 ++++
 drivers/net/wireless/broadcom/b43/dma.h       |   1 +
 drivers/net/wireless/broadcom/b43/main.c      | 113 ++++++
 .../net/wireless/broadcom/b43/phy_common.c    |  13 +
 .../net/wireless/broadcom/b43/phy_common.h    |   7 +
 drivers/net/wireless/broadcom/b43/xmit.c      | 327 +++++++++++++++++-
 drivers/net/wireless/broadcom/b43/xmit.h      |  13 +
 7 files changed, 528 insertions(+), 7 deletions(-)