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[176.184.54.152]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4279f2cc286sm28591425e9.33.2024.07.12.09.28.02 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Fri, 12 Jul 2024 09:28:03 -0700 (PDT) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: =?utf-8?q?C=C3=A9dric_Le_Goater?= , Luc Michel , Francisco Iglesias , =?utf-8?q?Philippe_Mathieu?= =?utf-8?q?-Daud=C3=A9?= , =?utf-8?q?C=C3=A9dric_Le_Goate?= =?utf-8?q?r?= Subject: [PATCH v49 07/11] hw/sd/sdcard: Implement eMMC sleep state (CMD5) Date: Fri, 12 Jul 2024 18:27:15 +0200 Message-ID: <20240712162719.88165-8-philmd@linaro.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20240712162719.88165-1-philmd@linaro.org> References: <20240712162719.88165-1-philmd@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::12c; envelope-from=philmd@linaro.org; helo=mail-lf1-x12c.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, T_SPF_TEMPERROR=0.01 autolearn=ham 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org 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-Daudé Tested-by: Cédric Le Goater Reviewed-by: Cédric 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 a90612af58..d98952a12f 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 = sd_idle_state; - sd_reset(DEVICE(sd)); + if (sd->state == sd_sleep_state) { + switch (req.arg) { + case 0x00000000: + case 0xf0f0f0f0: + break; + default: + return sd_r0; + } + } + if (sd->state != sd_inactive_state) { + sd->state = sd_idle_state; + sd_reset(DEVICE(sd)); + } return sd_is_spi(sd) ? sd_r1 : sd_r0; } @@ -1294,6 +1305,30 @@ static sd_rsp_type_t emmc_cmd_SET_RELATIVE_ADDR(SDState *sd, SDRequest req) } } +/* CMD5 */ +static sd_rsp_type_t emmc_cmd_sleep_awake(SDState *sd, SDRequest req) +{ + bool do_sleep = extract32(req.arg, 15, 1); + + switch (sd->state) { + case sd_sleep_state: + if (!do_sleep) { + /* Awake */ + sd->state = sd_standby_state; + } + return sd_r1b; + + case sd_standby_state: + if (do_sleep) { + sd->state = 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, SDRequest 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) != 0x0000) { @@ -2018,6 +2054,12 @@ int sd_do_command(SDState *sd, SDRequest *req, req->cmd &= 0x3f; } + if (sd->state == sd_sleep_state && req->cmd) { + qemu_log_mask(LOG_GUEST_ERROR, "SD: Card is sleeping\n"); + rtype = sd_r0; + goto send_response; + } + if (sd->card_status & CARD_IS_LOCKED) { if (!cmd_valid_while_locked(sd, req->cmd)) { sd->card_status |= ILLEGAL_COMMAND; @@ -2467,6 +2509,7 @@ static const SDProto sd_proto_emmc = { [2] = {0, sd_bcr, "ALL_SEND_CID", sd_cmd_ALL_SEND_CID}, [3] = {0, sd_ac, "SET_RELATIVE_ADDR", emmc_cmd_SET_RELATIVE_ADDR}, [4] = {0, sd_bc, "SEND_DSR", sd_cmd_unimplemented}, + [5] = {0, sd_ac, "SLEEP/AWAKE", emmc_cmd_sleep_awake}, [7] = {0, sd_ac, "(DE)SELECT_CARD", sd_cmd_DE_SELECT_CARD}, [9] = {0, sd_ac, "SEND_CSD", sd_cmd_SEND_CSD}, [10] = {0, sd_ac, "SEND_CID", sd_cmd_SEND_CID},