From nobody Wed Feb 11 05:28:53 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1688391091892893.7568460427269; Mon, 3 Jul 2023 06:31:31 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qGJZW-0001EH-Q4; Mon, 03 Jul 2023 09:26:31 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qGJZR-0000wy-8F for qemu-devel@nongnu.org; Mon, 03 Jul 2023 09:26:27 -0400 Received: from mail.ozlabs.org ([2404:9400:2221:ea00::3] helo=gandalf.ozlabs.org) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qGJZP-0000rH-1T for qemu-devel@nongnu.org; Mon, 03 Jul 2023 09:26:24 -0400 Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4QvmsS49pBz4wb1; Mon, 3 Jul 2023 23:26:20 +1000 (AEST) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4QvmsP6Dmwz4wqX; Mon, 3 Jul 2023 23:26:17 +1000 (AEST) From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Bin Meng , Peter Maydell , Lucien Murray-Pitts , Sai Pavan Boddu , "Edgar E . Iglesias" , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= Subject: [PATCH 21/32] hw/sd: Add mmc switch function support Date: Mon, 3 Jul 2023 15:24:58 +0200 Message-ID: <20230703132509.2474225-22-clg@kaod.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230703132509.2474225-1-clg@kaod.org> References: <20230703132509.2474225-1-clg@kaod.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=2404:9400:2221:ea00::3; envelope-from=SRS0=mKPa=CV=kaod.org=clg@ozlabs.org; helo=gandalf.ozlabs.org X-Spam_score_int: -39 X-Spam_score: -4.0 X-Spam_bar: ---- X-Spam_report: (-4.0 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1688391093151100003 From: Sai Pavan Boddu switch operation in mmc cards, updated the ext_csd register to request changes in card operations. Here we implement similar sequence but requests are mostly dummy and make no change. Implement SWITCH_ERROR if the write operation offset goes beyond length of ext_csd. Signed-off-by: Sai Pavan Boddu Signed-off-by: Edgar E. Iglesias [ clg: - ported on SDProto framework ] Signed-off-by: C=C3=A9dric Le Goater --- hw/sd/sd.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) diff --git a/hw/sd/sd.c b/hw/sd/sd.c index 7332f7a18435..51e2254728a6 100644 --- a/hw/sd/sd.c +++ b/hw/sd/sd.c @@ -482,6 +482,7 @@ static void sd_set_rca(SDState *sd) FIELD(CSR, AKE_SEQ_ERROR, 3, 1) FIELD(CSR, APP_CMD, 5, 1) FIELD(CSR, FX_EVENT, 6, 1) +FIELD(CSR, SWITCH_ERROR, 7, 1) FIELD(CSR, READY_FOR_DATA, 8, 1) FIELD(CSR, CURRENT_STATE, 9, 4) FIELD(CSR, ERASE_RESET, 13, 1) @@ -878,6 +879,43 @@ static uint32_t sd_wpbits(SDState *sd, uint64_t addr) return ret; } =20 +enum { + MMC_CMD6_ACCESS_COMMAND_SET =3D 0, + MMC_CMD6_ACCESS_SET_BITS, + MMC_CMD6_ACCESS_CLEAR_BITS, + MMC_CMD6_ACCESS_WRITE_BYTE, +}; + +static void mmc_function_switch(SDState *sd, uint32_t arg) +{ + uint32_t access =3D extract32(arg, 24, 2); + uint32_t index =3D extract32(arg, 16, 8); + uint32_t value =3D extract32(arg, 8, 8); + uint8_t b =3D sd->ext_csd[index]; + + switch (access) { + case MMC_CMD6_ACCESS_COMMAND_SET: + qemu_log_mask(LOG_UNIMP, "MMC Command set switching not supported\= n"); + return; + case MMC_CMD6_ACCESS_SET_BITS: + b |=3D value; + break; + case MMC_CMD6_ACCESS_CLEAR_BITS: + b &=3D ~value; + break; + case MMC_CMD6_ACCESS_WRITE_BYTE: + b =3D value; + break; + } + + if (index >=3D 192) { + sd->card_status |=3D R_CSR_SWITCH_ERROR_MASK; + return; + } + + sd->ext_csd[index] =3D b; +} + static void sd_function_switch(SDState *sd, uint32_t arg) { int i, mode, new_func; @@ -2263,6 +2301,19 @@ static sd_rsp_type_t emmc_cmd_SEND_TUNING_BLOCK(SDSt= ate *sd, SDRequest req) return sd_r1; } =20 +static sd_rsp_type_t emmc_cmd_SWITCH_FUNCTION(SDState *sd, SDRequest req) +{ + switch (sd->state) { + case sd_transfer_state: + sd->state =3D sd_programming_state; + mmc_function_switch(sd, req.arg); + sd->state =3D sd_transfer_state; + return sd_r1b; + default: + return sd_invalid_state_for_cmd(sd, req); + } +} + static const SDProto sd_proto_emmc =3D { .name =3D "eMMC", .cmd =3D { @@ -2271,6 +2322,7 @@ static const SDProto sd_proto_emmc =3D { [2] =3D emmc_cmd_ALL_SEND_CID, [3] =3D emmc_cmd_SEND_RELATIVE_ADDR, [5] =3D sd_cmd_illegal, + [6] =3D emmc_cmd_SWITCH_FUNCTION, [19] =3D sd_cmd_SEND_TUNING_BLOCK, [23] =3D sd_cmd_SET_BLOCK_COUNT, [21] =3D emmc_cmd_SEND_TUNING_BLOCK, --=20 2.41.0