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Date: Fri, 20 Oct 2023 11:57:42 +0200
From: Arend van Spriel <arend.vanspriel@...adcom.com>
To: Daniel Berlin <dberlin@...rlin.org>,
Arend van Spriel <aspriel@...il.com>,
Franky Lin <franky.lin@...adcom.com>,
Hante Meuleman <hante.meuleman@...adcom.com>
Cc: linux-wireless@...r.kernel.org,
brcm80211-dev-list.pdl@...adcom.com,
SHA-cyfmac-dev-list@...ineon.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/5] [brcmfmac] Add support for encoding/decoding 6g
chanspecs
On 10/19/2023 3:42 AM, Daniel Berlin wrote:
> This patch adds support for 6G chanspecs, as part of adding 6G and
> 802.11ax support.
>
> I added the correct values for the upcoming 320mhz as well so that the
> info is complete.
Reviewed-by: Arend van Spriel <arend.vanspriel@...adcom.com>>
Signed-off-by: Daniel Berlin <dberlin@...rlin.org>
> ---
> .../broadcom/brcm80211/brcmutil/d11.c | 46 +++++++++++++++----
> .../broadcom/brcm80211/include/brcmu_d11.h | 46 +++++++++++++------
> .../broadcom/brcm80211/include/brcmu_wifi.h | 27 ++++++++---
> 3 files changed, 89 insertions(+), 30 deletions(-)
>
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmutil/d11.c b/drivers/net/wireless/broadcom/brcm80211/brcmutil/d11.c
> index 1e2b1e487eb7..faf7eeeeb2d5 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmutil/d11.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmutil/d11.c
[...]
> @@ -117,7 +127,9 @@ static void brcmu_d11n_decchspec(struct brcmu_chan *ch)
> }
> break;
> default:
> - WARN_ONCE(1, "Invalid chanspec 0x%04x\n", ch->chspec);
> + WARN_ONCE(1,
> + "Invalid chanspec - unknown 11n bandwidth 0x%04x\n",
> + ch->chspec);
I don't think this provides more info. The WARN_ONCE() already prints
code location and stack trace.
> break;
> }
>
> @@ -129,7 +141,8 @@ static void brcmu_d11n_decchspec(struct brcmu_chan *ch)
> ch->band = BRCMU_CHAN_BAND_2G;
> break;
> default:
> - WARN_ONCE(1, "Invalid chanspec 0x%04x\n", ch->chspec);
> + WARN_ONCE(1, "Invalid chanspec - unknown 11n band 0x%04x\n",
> + ch->chspec);
ditto
> break;
> }
> }
> @@ -156,7 +169,9 @@ static void brcmu_d11ac_decchspec(struct brcmu_chan *ch)
> ch->sb = BRCMU_CHAN_SB_U;
> ch->control_ch_num += CH_10MHZ_APART;
> } else {
> - WARN_ONCE(1, "Invalid chanspec 0x%04x\n", ch->chspec);
> + WARN_ONCE(1,
> + "Invalid chanspec - unknown 11ac channel distance 0x%04x\n",
> + ch->chspec);
ditto
> }
> break;
> case BRCMU_CHSPEC_D11AC_BW_80:
> @@ -177,7 +192,9 @@ static void brcmu_d11ac_decchspec(struct brcmu_chan *ch)
> ch->control_ch_num += CH_30MHZ_APART;
> break;
> default:
> - WARN_ONCE(1, "Invalid chanspec 0x%04x\n", ch->chspec);
> + WARN_ONCE(1,
> + "Invalid chanspec - unknown 11ac channel distance 0x%04x\n",
> + ch->chspec);
ditto
> break;
> }
> break;
> @@ -211,17 +228,24 @@ static void brcmu_d11ac_decchspec(struct brcmu_chan *ch)
> ch->control_ch_num += CH_70MHZ_APART;
> break;
> default:
> - WARN_ONCE(1, "Invalid chanspec 0x%04x\n", ch->chspec);
> + WARN_ONCE(1,
> + "Invalid chanspec - unknown 11ac channel distance 0x%04x\n",
> + ch->chspec);
ditto
> break;
> }
> break;
> case BRCMU_CHSPEC_D11AC_BW_8080:
> default:
> - WARN_ONCE(1, "Invalid chanspec 0x%04x\n", ch->chspec);
> + WARN_ONCE(1,
> + "Invalid chanspec - unknown 11ac channel bandwidth 0x%04x\n",
> + ch->chspec);
> break;
> }
>
> switch (ch->chspec & BRCMU_CHSPEC_D11AC_BND_MASK) {
> + case BRCMU_CHSPEC_D11AC_BND_6G:
> + ch->band = BRCMU_CHAN_BAND_6G;
> + break;
> case BRCMU_CHSPEC_D11AC_BND_5G:
> ch->band = BRCMU_CHAN_BAND_5G;
> break;
[...]
> diff --git a/drivers/net/wireless/broadcom/brcm80211/include/brcmu_d11.h b/drivers/net/wireless/broadcom/brcm80211/include/brcmu_d11.h
> index f6344023855c..bb48b7442062 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/include/brcmu_d11.h
> +++ b/drivers/net/wireless/broadcom/brcm80211/include/brcmu_d11.h
> @@ -69,24 +69,44 @@
> #define BRCMU_CHSPEC_D11AC_SB_UU BRCMU_CHSPEC_D11AC_SB_LUU
> #define BRCMU_CHSPEC_D11AC_SB_L BRCMU_CHSPEC_D11AC_SB_LLL
> #define BRCMU_CHSPEC_D11AC_SB_U BRCMU_CHSPEC_D11AC_SB_LLU
> +/* channel sideband indication for frequency >= 240MHz */
> +#define BRCMU_CHSPEC_D11AC_320_SB_MASK 0x0780
> +#define BRCMU_CHSPEC_D11AC_320_SB_SHIFT 7
> +#define BRCMU_CHSPEC_D11AC_SB_LLLL 0x0000
> +#define BRCMU_CHSPEC_D11AC_SB_LLLU 0x0080
> +#define BRCMU_CHSPEC_D11AC_SB_LLUL 0x0100
> +#define BRCMU_CHSPEC_D11AC_SB_LLUU 0x0180
> +#define BRCMU_CHSPEC_D11AC_SB_LULL 0x0200
> +#define BRCMU_CHSPEC_D11AC_SB_LULU 0x0280
> +#define BRCMU_CHSPEC_D11AC_SB_LUUL 0x0300
> +#define BRCMU_CHSPEC_D11AC_SB_LUUU 0x0380
> +#define BRCMU_CHSPEC_D11AC_SB_ULLL 0x0400
> +#define BRCMU_CHSPEC_D11AC_SB_ULLU 0x0480
> +#define BRCMU_CHSPEC_D11AC_SB_ULUL 0x0500
> +#define BRCMU_CHSPEC_D11AC_SB_ULUU 0x0580
> +#define BRCMU_CHSPEC_D11AC_SB_UULL 0x0600
> +#define BRCMU_CHSPEC_D11AC_SB_UULU 0x0680
> +#define BRCMU_CHSPEC_D11AC_SB_UUUL 0x0700
> +#define BRCMU_CHSPEC_D11AC_SB_UUUU 0x0780
These are WCC specific, but I think it is okay to have these definitions
here.
> #define BRCMU_CHSPEC_D11AC_BW_MASK 0x3800
> #define BRCMU_CHSPEC_D11AC_BW_SHIFT 11
> -#define BRCMU_CHSPEC_D11AC_BW_5 0x0000
> -#define BRCMU_CHSPEC_D11AC_BW_10 0x0800
> -#define BRCMU_CHSPEC_D11AC_BW_20 0x1000
> -#define BRCMU_CHSPEC_D11AC_BW_40 0x1800
> -#define BRCMU_CHSPEC_D11AC_BW_80 0x2000
> -#define BRCMU_CHSPEC_D11AC_BW_160 0x2800
> -#define BRCMU_CHSPEC_D11AC_BW_8080 0x3000
> -#define BRCMU_CHSPEC_D11AC_BND_MASK 0xc000
> -#define BRCMU_CHSPEC_D11AC_BND_SHIFT 14
> -#define BRCMU_CHSPEC_D11AC_BND_2G 0x0000
> -#define BRCMU_CHSPEC_D11AC_BND_3G 0x4000
> -#define BRCMU_CHSPEC_D11AC_BND_4G 0x8000
> -#define BRCMU_CHSPEC_D11AC_BND_5G 0xc000
> +#define BRCMU_CHSPEC_D11AC_BW_10 0x0800
> +#define BRCMU_CHSPEC_D11AC_BW_20 0x1000
> +#define BRCMU_CHSPEC_D11AC_BW_40 0x1800
> +#define BRCMU_CHSPEC_D11AC_BW_80 0x2000
> +#define BRCMU_CHSPEC_D11AC_BW_160 0x2800
> +#define BRCMU_CHSPEC_D11AC_BW_320 0x0000
320MHz is 802.11be. No need to add this already, but not a biggy.
> +#define BRCMU_CHSPEC_D11AC_BW_8080 0x3000
> +#define BRCMU_CHSPEC_D11AC_BND_MASK 0xc000
> +#define BRCMU_CHSPEC_D11AC_BND_SHIFT 14
> +#define BRCMU_CHSPEC_D11AC_BND_2G 0x0000
> +#define BRCMU_CHSPEC_D11AC_BND_4G 0x8000
> +#define BRCMU_CHSPEC_D11AC_BND_5G 0xc000
> +#define BRCMU_CHSPEC_D11AC_BND_6G 0x4000
>
> #define BRCMU_CHAN_BAND_2G 0
> #define BRCMU_CHAN_BAND_5G 1
> +#define BRCMU_CHAN_BAND_6G 2
>
> enum brcmu_chan_bw {
> BRCMU_CHAN_BW_20,
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