On Sun, 8 Sept 2024 at 12:22, Avri Altman <avri.altman@xxxxxxx> wrote:
>
> For open-ended read/write - just send CMD22 before issuing the command.
>
> Reviewed-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
> Signed-off-by: Avri Altman <avri.altman@xxxxxxx>
> ---
> drivers/mmc/core/block.c | 5 +++++
> drivers/mmc/core/core.c | 3 +++
> include/linux/mmc/core.h | 5 +++++
> 3 files changed, 13 insertions(+)
>
> diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
> index 05a7745c2a68..ba2ed413be5c 100644
> --- a/drivers/mmc/core/block.c
> +++ b/drivers/mmc/core/block.c
> @@ -1759,6 +1759,11 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
> brq->sbc.flags = MMC_RSP_R1 | MMC_CMD_AC;
> brq->mrq.sbc = &brq->sbc;
> }
> +
> + if (mmc_card_ult_capacity(card)) {
> + brq->cmd.ext_addr = blk_rq_pos(req) >> 32;
> + brq->cmd.has_ext_addr = true;
> + }
> }
>
> #define MMC_MAX_RETRIES 5
> diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
> index d6c819dd68ed..a0b2999684b3 100644
> --- a/drivers/mmc/core/core.c
> +++ b/drivers/mmc/core/core.c
> @@ -336,6 +336,9 @@ int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
> {
> int err;
>
> + if (mrq->cmd && mrq->cmd->has_ext_addr)
> + mmc_send_ext_addr(host, mrq->cmd->ext_addr);
> +
> init_completion(&mrq->cmd_completion);
>
> mmc_retune_hold(host);
> diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
> index f0ac2e469b32..c86df8443a88 100644
> --- a/include/linux/mmc/core.h
> +++ b/include/linux/mmc/core.h
> @@ -96,6 +96,11 @@ struct mmc_command {
> unsigned int busy_timeout; /* busy detect timeout in ms */
> struct mmc_data *data; /* data segment associated with cmd */
> struct mmc_request *mrq; /* associated request */
> +
> + /* for SDUC */
> + bool has_ext_addr;
> + u8 ext_addr;
> + u16 reserved;
I don't see this being used, at least in this patch. Perhaps move it
to the patch that starts using it?
> };
>
> struct mmc_data {
> --
> 2.25.1
>
Kind regards
Uffe
