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Re: [RFC: 2.6 patch] b43: the overdue firmware < 410 removal

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On Wed, Aug 6, 2008 at 11:23 PM, Adrian Bunk <bunk@xxxxxxxxxx> wrote:
> This patch contains the overdue removal of support for firmware
> revision < 410.
>
> Signed-off-by: Adrian Bunk <bunk@xxxxxxxxxx>
>
> ---
>
>  Documentation/feature-removal-schedule.txt |    9 ----
>  drivers/net/wireless/b43/main.c            |    8 ---
>  drivers/net/wireless/b43/xmit.c            |   45 ++++----------------
>  drivers/net/wireless/b43/xmit.h            |   47 +++++----------------
>  4 files changed, 22 insertions(+), 87 deletions(-)
>
> d83c2534c5d33bc80203ef1480c0e6f7bb201313
> diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
> index 77d5bed..e18e2d1 100644
> --- a/Documentation/feature-removal-schedule.txt
> +++ b/Documentation/feature-removal-schedule.txt
> @@ -244,15 +244,6 @@ Who:       Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx>
>
>  ---------------------------
>
> -What:  b43 support for firmware revision < 410
> -When:  July 2008
> -Why:   The support code for the old firmware hurts code readability/maintainability
> -       and slightly hurts runtime performance. Bugfixes for the old firmware
> -       are not provided by Broadcom anymore.
> -Who:   Michael Buesch <mb@xxxxxxxxx>
> -
> ----------------------------
> -
>  What:  init_mm export
>  When:  2.6.26
>  Why:   Not used in-tree. The current out-of-tree users used it to
> diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
> index 3bf3a86..a655bb5 100644
> --- a/drivers/net/wireless/b43/main.c
> +++ b/drivers/net/wireless/b43/main.c
> @@ -2289,7 +2289,7 @@ static int b43_upload_microcode(struct b43_wldev *dev)
>        fwdate = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODEDATE);
>        fwtime = b43_shm_read16(dev, B43_SHM_SHARED, B43_SHM_SH_UCODETIME);
>
> -       if (fwrev <= 0x128) {
> +       if (fwrev <= 351) {
>                b43err(dev->wl, "YOUR FIRMWARE IS TOO OLD. Firmware from "
>                       "binary drivers older than version 4.x is unsupported. "
>                       "You must upgrade your firmware files.\n");
> @@ -2320,12 +2320,6 @@ static int b43_upload_microcode(struct b43_wldev *dev)
>                }
>        }
>
> -       if (b43_is_old_txhdr_format(dev)) {
> -               b43warn(dev->wl, "You are using an old firmware image. "
> -                       "Support for old firmware will be removed in July 2008.\n");
> -               b43_print_fw_helptext(dev->wl, 0);
> -       }
> -
>        return 0;
>
>  error:
> diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c
> index 9dda816..32b8acb 100644
> --- a/drivers/net/wireless/b43/xmit.c
> +++ b/drivers/net/wireless/b43/xmit.c
> @@ -264,13 +264,8 @@ int b43_generate_txhdr(struct b43_wldev *dev,
>                             ARRAY_SIZE(txhdr->iv));
>                memcpy(txhdr->iv, ((u8 *) wlhdr) + wlhdr_len, iv_len);
>        }
> -       if (b43_is_old_txhdr_format(dev)) {
> -               b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->old_format.plcp),
> -                                     plcp_fragment_len, rate);
> -       } else {
> -               b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->new_format.plcp),
> -                                     plcp_fragment_len, rate);
> -       }
> +       b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->new_format.plcp),
> +                             plcp_fragment_len, rate);
>        b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)(&txhdr->plcp_fb),
>                              plcp_fragment_len, rate_fb);
>
> @@ -347,13 +342,8 @@ int b43_generate_txhdr(struct b43_wldev *dev,
>                if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
>                        struct ieee80211_cts *cts;
>
> -                       if (b43_is_old_txhdr_format(dev)) {
> -                               cts = (struct ieee80211_cts *)
> -                                       (txhdr->old_format.rts_frame);
> -                       } else {
> -                               cts = (struct ieee80211_cts *)
> -                                       (txhdr->new_format.rts_frame);
> -                       }
> +                       cts = (struct ieee80211_cts *)
> +                               (txhdr->new_format.rts_frame);
>                        ieee80211_ctstoself_get(dev->wl->hw, info->control.vif,
>                                                fragment_data, fragment_len,
>                                                info, cts);
> @@ -362,13 +352,8 @@ int b43_generate_txhdr(struct b43_wldev *dev,
>                } else {
>                        struct ieee80211_rts *rts;
>
> -                       if (b43_is_old_txhdr_format(dev)) {
> -                               rts = (struct ieee80211_rts *)
> -                                       (txhdr->old_format.rts_frame);
> -                       } else {
> -                               rts = (struct ieee80211_rts *)
> -                                       (txhdr->new_format.rts_frame);
> -                       }
> +                       rts = (struct ieee80211_rts *)
> +                               (txhdr->new_format.rts_frame);
>                        ieee80211_rts_get(dev->wl->hw, info->control.vif,
>                                          fragment_data, fragment_len,
>                                          info, rts);
> @@ -378,23 +363,14 @@ int b43_generate_txhdr(struct b43_wldev *dev,
>                len += FCS_LEN;
>
>                /* Generate the PLCP headers for the RTS/CTS frame */
> -               if (b43_is_old_txhdr_format(dev))
> -                       plcp = &txhdr->old_format.rts_plcp;
> -               else
> -                       plcp = &txhdr->new_format.rts_plcp;
> +               plcp = &txhdr->new_format.rts_plcp;
>                b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp,
>                                      len, rts_rate);
>                plcp = &txhdr->rts_plcp_fb;
>                b43_generate_plcp_hdr((struct b43_plcp_hdr4 *)plcp,
>                                      len, rts_rate_fb);
>
> -               if (b43_is_old_txhdr_format(dev)) {
> -                       hdr = (struct ieee80211_hdr *)
> -                               (&txhdr->old_format.rts_frame);
> -               } else {
> -                       hdr = (struct ieee80211_hdr *)
> -                               (&txhdr->new_format.rts_frame);
> -               }
> +               hdr = (struct ieee80211_hdr *) (&txhdr->new_format.rts_frame);
>                txhdr->rts_dur_fb = hdr->duration_id;
>
>                if (rts_rate_ofdm) {
> @@ -413,10 +389,7 @@ int b43_generate_txhdr(struct b43_wldev *dev,
>        }
>
>        /* Magic cookie */
> -       if (b43_is_old_txhdr_format(dev))
> -               txhdr->old_format.cookie = cpu_to_le16(cookie);
> -       else
> -               txhdr->new_format.cookie = cpu_to_le16(cookie);
> +       txhdr->new_format.cookie = cpu_to_le16(cookie);
>
>        /* Apply the bitfields */
>        txhdr->mac_ctl = cpu_to_le32(mac_ctl);
> diff --git a/drivers/net/wireless/b43/xmit.h b/drivers/net/wireless/b43/xmit.h
> index 0215faf..1447ce6 100644
> --- a/drivers/net/wireless/b43/xmit.h
> +++ b/drivers/net/wireless/b43/xmit.h
> @@ -43,32 +43,18 @@ struct b43_txhdr {
>        __le16 mimo_ratelen_fb;         /* MIMO fallback rate length */
>        __le32 timeout;                 /* Timeout */
>
> -       union {
> -               /* The new r410 format. */
> -               struct {
> -                       __le16 mimo_antenna;            /* MIMO antenna select */
> -                       __le16 preload_size;            /* Preload size */
> -                       PAD_BYTES(2);
> -                       __le16 cookie;                  /* TX frame cookie */
> -                       __le16 tx_status;               /* TX status */
> -                       struct b43_plcp_hdr6 rts_plcp;  /* RTS PLCP header */
> -                       __u8 rts_frame[16];             /* The RTS frame (if used) */
> -                       PAD_BYTES(2);
> -                       struct b43_plcp_hdr6 plcp;      /* Main PLCP header */
> -               } new_format __attribute__ ((__packed__));
> -
> -               /* The old r351 format. */
> -               struct {
> -                       PAD_BYTES(2);
> -                       __le16 cookie;                  /* TX frame cookie */
> -                       __le16 tx_status;               /* TX status */
> -                       struct b43_plcp_hdr6 rts_plcp;  /* RTS PLCP header */
> -                       __u8 rts_frame[16];             /* The RTS frame (if used) */
> -                       PAD_BYTES(2);
> -                       struct b43_plcp_hdr6 plcp;      /* Main PLCP header */
> -               } old_format __attribute__ ((__packed__));
> -
> -       } __attribute__ ((__packed__));
> +       /* The new r410 format. */
> +       struct {
> +               __le16 mimo_antenna;            /* MIMO antenna select */
> +               __le16 preload_size;            /* Preload size */
> +               PAD_BYTES(2);
> +               __le16 cookie;                  /* TX frame cookie */
> +               __le16 tx_status;               /* TX status */
> +               struct b43_plcp_hdr6 rts_plcp;  /* RTS PLCP header */
> +               __u8 rts_frame[16];             /* The RTS frame (if used) */
> +               PAD_BYTES(2);
> +               struct b43_plcp_hdr6 plcp;      /* Main PLCP header */
> +       } new_format __attribute__ ((__packed__));
>  } __attribute__ ((__packed__));
>
>  /* MAC TX control */
> @@ -158,18 +144,9 @@ struct b43_txhdr {
>  #define  B43_TXH_PHY1_MODUL_QAM256     0x2000 /* QAM256 */
>
>
> -/* r351 firmware compatibility stuff. */
> -static inline
> -bool b43_is_old_txhdr_format(struct b43_wldev *dev)
> -{
> -       return (dev->fw.rev <= 351);
> -}
> -
>  static inline
>  size_t b43_txhdr_size(struct b43_wldev *dev)
>  {
> -       if (b43_is_old_txhdr_format(dev))
> -               return 100 + sizeof(struct b43_plcp_hdr6);
>        return 104 + sizeof(struct b43_plcp_hdr6);
>  }
>
>

Doesn't this remove support for the opensource firmware too?

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