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Iglesias" , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Subject: [PATCH v48 07/12] hw/sd/sdcard: Implement eMMC sleep state (CMD5) Date: Wed, 10 Jul 2024 16:14:03 +0200 Message-ID: <20240710141408.69275-8-philmd@linaro.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20240710141408.69275-1-philmd@linaro.org> References: <20240710141408.69275-1-philmd@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::233; envelope-from=philmd@linaro.org; helo=mail-lj1-x233.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1720620974825116600 From: Luc Michel The JEDEC standards specifies a sleep state where the eMMC won't answer any command appart from RESET and WAKEUP and go to low power state. Implement this state and the corresponding command number 5. Signed-off-by: Luc Michel Signed-off-by: Francisco Iglesias Signed-off-by: Philippe Mathieu-Daud=C3=A9 Tested-by: C=C3=A9dric Le Goater Reviewed-by: C=C3=A9dric Le Goater --- hw/sd/sd.c | 47 +++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 45 insertions(+), 2 deletions(-) diff --git a/hw/sd/sd.c b/hw/sd/sd.c index 3628686832..cf130ad1e3 100644 --- a/hw/sd/sd.c +++ b/hw/sd/sd.c @@ -1236,8 +1236,19 @@ static sd_rsp_type_t sd_cmd_to_sendingdata(SDState *= sd, SDRequest req, /* CMD0 */ static sd_rsp_type_t sd_cmd_GO_IDLE_STATE(SDState *sd, SDRequest req) { - sd->state =3D sd_idle_state; - sd_reset(DEVICE(sd)); + if (sd->state =3D=3D sd_sleep_state) { + switch (req.arg) { + case 0x00000000: + case 0xf0f0f0f0: + break; + default: + return sd_r0; + } + } + if (sd->state !=3D sd_inactive_state) { + sd->state =3D sd_idle_state; + sd_reset(DEVICE(sd)); + } =20 return sd_is_spi(sd) ? sd_r1 : sd_r0; } @@ -1294,6 +1305,30 @@ static sd_rsp_type_t emmc_cmd_SET_RELATIVE_ADDR(SDSt= ate *sd, SDRequest req) } } =20 +/* CMD5 */ +static sd_rsp_type_t emmc_cmd_sleep_awake(SDState *sd, SDRequest req) +{ + bool do_sleep =3D extract32(req.arg, 15, 1); + + switch (sd->state) { + case sd_sleep_state: + if (!do_sleep) { + /* Awake */ + sd->state =3D sd_standby_state; + } + return sd_r1b; + + case sd_standby_state: + if (do_sleep) { + sd->state =3D sd_sleep_state; + } + return sd_r1b; + + default: + return sd_invalid_state_for_cmd(sd, req); + } +} + /* CMD6 */ static sd_rsp_type_t sd_cmd_SWITCH_FUNCTION(SDState *sd, SDRequest req) { @@ -1696,6 +1731,7 @@ static sd_rsp_type_t sd_cmd_APP_CMD(SDState *sd, SDRe= quest req) case sd_ready_state: case sd_identification_state: case sd_inactive_state: + case sd_sleep_state: return sd_invalid_state_for_cmd(sd, req); case sd_idle_state: if (!sd_is_spi(sd) && sd_req_get_rca(sd, req) !=3D 0x0000) { @@ -2018,6 +2054,12 @@ int sd_do_command(SDState *sd, SDRequest *req, req->cmd &=3D 0x3f; } =20 + if (sd->state =3D=3D sd_sleep_state && req->cmd) { + qemu_log_mask(LOG_GUEST_ERROR, "SD: Card is sleeping\n"); + rtype =3D sd_r0; + goto send_response; + } + if (sd->card_status & CARD_IS_LOCKED) { if (!cmd_valid_while_locked(sd, req->cmd)) { sd->card_status |=3D ILLEGAL_COMMAND; @@ -2467,6 +2509,7 @@ static const SDProto sd_proto_emmc =3D { [2] =3D {0, sd_bcr, "ALL_SEND_CID", sd_cmd_ALL_SEND_CID}, [3] =3D {0, sd_ac, "SET_RELATIVE_ADDR", emmc_cmd_SET_RELATIVE_= ADDR}, [4] =3D {0, sd_bc, "SEND_DSR", sd_cmd_unimplemented}, + [5] =3D {0, sd_ac, "SLEEP/AWAKE", emmc_cmd_sleep_awake}, [7] =3D {0, sd_ac, "(DE)SELECT_CARD", sd_cmd_DE_SELECT_CARD}, [9] =3D {0, sd_ac, "SEND_CSD", sd_cmd_SEND_CSD}, [10] =3D {0, sd_ac, "SEND_CID", sd_cmd_SEND_CID}, --=20 2.41.0