From patchwork Wed Jun 8 11:07:21 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tzung-Bi Shih X-Patchwork-Id: 12873303 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B7D402F39 for ; Wed, 8 Jun 2022 11:08:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB9D3C3411C; Wed, 8 Jun 2022 11:07:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1654686480; bh=XIpwS59yHqDQbpsPBUX+XrrQVw9aY+t7Ux1bkSIpa6k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lgDERP9OOTtmvb3Aa7VB65FLwoSL6bzY4iSQZdMswYUhrOq3IruzK60l6ytICxbTL mpftY7py+iZjsMxqggxZ0h5ucINy2Av9l1dgwubf+7Y+73ONuQ/dhvnoyZEp3jlwAC vuk8S6AWeknYvwU6ImYCKdZVw42CYkDLBKLnr2UJio187+2rvv/BLFOU95c5lMdn/h 2LNCSfE9v9U9+jKUsElgWxDGMvo9MsQxPrbhmiNE8zfCAC4srtavIGsvt4TEcDO03g I46v1sWTRsgsGqTHR4Sqmoss+Lj6eh782cPvlFkskGOL1Rtv+YDXf1jx9a55wHCH6a Y+/4jm38vwt3Q== From: Tzung-Bi Shih To: bleung@chromium.org, groeck@chromium.org Cc: chrome-platform@lists.linux.dev, tzungbi@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 10/23] platform/chrome: cros_ec_proto: separate cros_ec_get_proto_info_legacy() Date: Wed, 8 Jun 2022 11:07:21 +0000 Message-Id: <20220608110734.2928245-11-tzungbi@kernel.org> X-Mailer: git-send-email 2.36.1.255.ge46751e96f-goog In-Reply-To: <20220608110734.2928245-1-tzungbi@kernel.org> References: <20220608110734.2928245-1-tzungbi@kernel.org> Precedence: bulk X-Mailing-List: chrome-platform@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Rename cros_ec_host_command_proto_query_v2() to cros_ec_get_proto_info_legacy() and make it responsible for setting `ec_dev` fields for EC protocol v2. Reviewed-by: Guenter Roeck Signed-off-by: Tzung-Bi Shih --- Changes from v2: - Add R-b tag. Changes from v1: - Preserve the "cros_ec_" prefix. drivers/platform/chrome/cros_ec_proto.c | 72 +++++++++----------- drivers/platform/chrome/cros_ec_proto_test.c | 22 +++--- 2 files changed, 44 insertions(+), 50 deletions(-) diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c index 6f5be9e5ede4..04b9704ed302 100644 --- a/drivers/platform/chrome/cros_ec_proto.c +++ b/drivers/platform/chrome/cros_ec_proto.c @@ -351,51 +351,57 @@ static int cros_ec_get_proto_info(struct cros_ec_device *ec_dev, int devidx) return ret; } -static int cros_ec_host_command_proto_query_v2(struct cros_ec_device *ec_dev) +static int cros_ec_get_proto_info_legacy(struct cros_ec_device *ec_dev) { struct cros_ec_command *msg; - struct ec_params_hello *hello_params; - struct ec_response_hello *hello_response; + struct ec_params_hello *params; + struct ec_response_hello *response; int ret; - int len = max(sizeof(*hello_params), sizeof(*hello_response)); - msg = kmalloc(sizeof(*msg) + len, GFP_KERNEL); + ec_dev->proto_version = 2; + + msg = kzalloc(sizeof(*msg) + max(sizeof(*params), sizeof(*response)), GFP_KERNEL); if (!msg) return -ENOMEM; - msg->version = 0; msg->command = EC_CMD_HELLO; - hello_params = (struct ec_params_hello *)msg->data; - msg->outsize = sizeof(*hello_params); - hello_response = (struct ec_response_hello *)msg->data; - msg->insize = sizeof(*hello_response); + msg->insize = sizeof(*response); + msg->outsize = sizeof(*params); - hello_params->in_data = 0xa0b0c0d0; + params = (struct ec_params_hello *)msg->data; + params->in_data = 0xa0b0c0d0; ret = send_command(ec_dev, msg); - if (ret < 0) { - dev_dbg(ec_dev->dev, - "EC failed to respond to v2 hello: %d\n", - ret); + dev_dbg(ec_dev->dev, "EC failed to respond to v2 hello: %d\n", ret); goto exit; - } else if (msg->result != EC_RES_SUCCESS) { - dev_err(ec_dev->dev, - "EC responded to v2 hello with error: %d\n", - msg->result); - ret = msg->result; + } + + ret = cros_ec_map_error(msg->result); + if (ret) { + dev_err(ec_dev->dev, "EC responded to v2 hello with error: %d\n", msg->result); goto exit; - } else if (hello_response->out_data != 0xa1b2c3d4) { + } + + response = (struct ec_response_hello *)msg->data; + if (response->out_data != 0xa1b2c3d4) { dev_err(ec_dev->dev, "EC responded to v2 hello with bad result: %u\n", - hello_response->out_data); + response->out_data); ret = -EBADMSG; goto exit; } - ret = 0; + ec_dev->max_request = EC_PROTO2_MAX_PARAM_SIZE; + ec_dev->max_response = EC_PROTO2_MAX_PARAM_SIZE; + ec_dev->max_passthru = 0; + ec_dev->pkt_xfer = NULL; + ec_dev->din_size = EC_PROTO2_MSG_BYTES; + ec_dev->dout_size = EC_PROTO2_MSG_BYTES; - exit: + dev_dbg(ec_dev->dev, "falling back to proto v2\n"); + ret = 0; +exit: kfree(msg); return ret; } @@ -467,20 +473,8 @@ int cros_ec_query_all(struct cros_ec_device *ec_dev) cros_ec_get_proto_info(ec_dev, CROS_EC_DEV_PD_INDEX); } else { /* Try querying with a v2 hello message. */ - ec_dev->proto_version = 2; - ret = cros_ec_host_command_proto_query_v2(ec_dev); - - if (ret == 0) { - /* V2 hello succeeded. */ - dev_dbg(ec_dev->dev, "falling back to proto v2\n"); - - ec_dev->max_request = EC_PROTO2_MAX_PARAM_SIZE; - ec_dev->max_response = EC_PROTO2_MAX_PARAM_SIZE; - ec_dev->max_passthru = 0; - ec_dev->pkt_xfer = NULL; - ec_dev->din_size = EC_PROTO2_MSG_BYTES; - ec_dev->dout_size = EC_PROTO2_MSG_BYTES; - } else { + ret = cros_ec_get_proto_info_legacy(ec_dev); + if (ret) { /* * It's possible for a test to occur too early when * the EC isn't listening. If this happens, we'll @@ -488,7 +482,7 @@ int cros_ec_query_all(struct cros_ec_device *ec_dev) */ ec_dev->proto_version = EC_PROTO_VERSION_UNKNOWN; dev_dbg(ec_dev->dev, "EC query failed: %d\n", ret); - goto exit; + return ret; } } diff --git a/drivers/platform/chrome/cros_ec_proto_test.c b/drivers/platform/chrome/cros_ec_proto_test.c index 1378ac90e1cb..8e47cb70dc8b 100644 --- a/drivers/platform/chrome/cros_ec_proto_test.c +++ b/drivers/platform/chrome/cros_ec_proto_test.c @@ -485,7 +485,7 @@ static void cros_ec_proto_test_query_all_legacy_normal_v3_return_error(struct ku KUNIT_ASSERT_PTR_NE(test, mock, NULL); } - /* For cros_ec_host_command_proto_query_v2(). */ + /* For cros_ec_get_proto_info_legacy(). */ { struct ec_response_hello *data; @@ -512,7 +512,7 @@ static void cros_ec_proto_test_query_all_legacy_normal_v3_return_error(struct ku KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0); } - /* For cros_ec_host_command_proto_query_v2(). */ + /* For cros_ec_get_proto_info_legacy(). */ { struct ec_params_hello *data; @@ -550,7 +550,7 @@ static void cros_ec_proto_test_query_all_legacy_normal_v3_return0(struct kunit * KUNIT_ASSERT_PTR_NE(test, mock, NULL); } - /* For cros_ec_host_command_proto_query_v2(). */ + /* For cros_ec_get_proto_info_legacy(). */ { struct ec_response_hello *data; @@ -577,7 +577,7 @@ static void cros_ec_proto_test_query_all_legacy_normal_v3_return0(struct kunit * KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0); } - /* For cros_ec_host_command_proto_query_v2(). */ + /* For cros_ec_get_proto_info_legacy(). */ { struct ec_params_hello *data; @@ -615,7 +615,7 @@ static void cros_ec_proto_test_query_all_legacy_xfer_error(struct kunit *test) KUNIT_ASSERT_PTR_NE(test, mock, NULL); } - /* For cros_ec_host_command_proto_query_v2(). */ + /* For cros_ec_get_proto_info_legacy(). */ { mock = cros_kunit_ec_xfer_mock_addx(test, -EIO, EC_RES_SUCCESS, 0); KUNIT_ASSERT_PTR_NE(test, mock, NULL); @@ -638,7 +638,7 @@ static void cros_ec_proto_test_query_all_legacy_xfer_error(struct kunit *test) KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0); } - /* For cros_ec_host_command_proto_query_v2(). */ + /* For cros_ec_get_proto_info_legacy(). */ { mock = cros_kunit_ec_xfer_mock_next(); KUNIT_EXPECT_PTR_NE(test, mock, NULL); @@ -663,7 +663,7 @@ static void cros_ec_proto_test_query_all_legacy_return_error(struct kunit *test) KUNIT_ASSERT_PTR_NE(test, mock, NULL); } - /* For cros_ec_host_command_proto_query_v2(). */ + /* For cros_ec_get_proto_info_legacy(). */ { mock = cros_kunit_ec_xfer_mock_addx(test, 0, EC_RES_INVALID_COMMAND, 0); KUNIT_ASSERT_PTR_NE(test, mock, NULL); @@ -671,7 +671,7 @@ static void cros_ec_proto_test_query_all_legacy_return_error(struct kunit *test) cros_ec_proto_test_query_all_pretest(test); ret = cros_ec_query_all(ec_dev); - KUNIT_EXPECT_EQ(test, ret, EC_RES_INVALID_COMMAND); + KUNIT_EXPECT_EQ(test, ret, -EOPNOTSUPP); KUNIT_EXPECT_EQ(test, ec_dev->proto_version, EC_PROTO_VERSION_UNKNOWN); /* For cros_ec_get_proto_info() without passthru. */ @@ -686,7 +686,7 @@ static void cros_ec_proto_test_query_all_legacy_return_error(struct kunit *test) KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0); } - /* For cros_ec_host_command_proto_query_v2(). */ + /* For cros_ec_get_proto_info_legacy(). */ { mock = cros_kunit_ec_xfer_mock_next(); KUNIT_EXPECT_PTR_NE(test, mock, NULL); @@ -711,7 +711,7 @@ static void cros_ec_proto_test_query_all_legacy_data_error(struct kunit *test) KUNIT_ASSERT_PTR_NE(test, mock, NULL); } - /* For cros_ec_host_command_proto_query_v2(). */ + /* For cros_ec_get_proto_info_legacy(). */ { struct ec_response_hello *data; @@ -739,7 +739,7 @@ static void cros_ec_proto_test_query_all_legacy_data_error(struct kunit *test) KUNIT_EXPECT_EQ(test, mock->msg.outsize, 0); } - /* For cros_ec_host_command_proto_query_v2(). */ + /* For cros_ec_get_proto_info_legacy(). */ { mock = cros_kunit_ec_xfer_mock_next(); KUNIT_EXPECT_PTR_NE(test, mock, NULL);