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15 Mar 2017 08:46:26 -0700 Received: from euamsexm01a.eu.qualcomm.com (10.251.127.40) by nasanexm02f.na.qualcomm.com (10.85.0.87) with Microsoft SMTP Server (TLS) id 15.0.1178.4; Wed, 15 Mar 2017 08:46:25 -0700 Received: from potku.adurom.net (10.80.80.8) by euamsexm01a.eu.qualcomm.com (10.251.127.40) with Microsoft SMTP Server (TLS) id 15.0.1178.4; Wed, 15 Mar 2017 16:46:20 +0100 Subject: [PATCH v6 07/10] ath10k: sdio get target info From: Kalle Valo To: Date: Wed, 15 Mar 2017 17:46:15 +0200 Message-ID: <148959277525.31432.8318094938250647870.stgit@potku.adurom.net> In-Reply-To: <148959263520.31432.8488419244476213373.stgit@potku.adurom.net> References: <148959263520.31432.8488419244476213373.stgit@potku.adurom.net> User-Agent: StGit/0.17.1-17-ge4e0 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanexm01a.na.qualcomm.com (10.85.0.81) To euamsexm01a.eu.qualcomm.com (10.251.127.40) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170315_084642_767942_ECF483EC X-CRM114-Status: GOOD ( 11.12 ) X-BeenThere: ath10k@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-wireless@vger.kernel.org Sender: "ath10k" Errors-To: ath10k-bounces+patchwork-ath10k=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Erik Stromdahl Special BMI get target info function for SDIO. Signed-off-by: Erik Stromdahl Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/bmi.c | 71 ++++++++++++++++++++++++++++++++ drivers/net/wireless/ath/ath10k/bmi.h | 2 + drivers/net/wireless/ath/ath10k/core.c | 5 ++ 3 files changed, 77 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/bmi.c b/drivers/net/wireless/ath/ath10k/bmi.c index abeee200310b..2d3a2f31123d 100644 --- a/drivers/net/wireless/ath/ath10k/bmi.c +++ b/drivers/net/wireless/ath/ath10k/bmi.c @@ -97,6 +97,77 @@ int ath10k_bmi_get_target_info(struct ath10k *ar, return 0; } +#define TARGET_VERSION_SENTINAL 0xffffffffu + +int ath10k_bmi_get_target_info_sdio(struct ath10k *ar, + struct bmi_target_info *target_info) +{ + struct bmi_cmd cmd; + union bmi_resp resp; + u32 cmdlen = sizeof(cmd.id) + sizeof(cmd.get_target_info); + u32 resplen, ver_len; + __le32 tmp; + int ret; + + ath10k_dbg(ar, ATH10K_DBG_BMI, "bmi get target info SDIO\n"); + + if (ar->bmi.done_sent) { + ath10k_warn(ar, "BMI Get Target Info Command disallowed\n"); + return -EBUSY; + } + + cmd.id = __cpu_to_le32(BMI_GET_TARGET_INFO); + + /* Step 1: Read 4 bytes of the target info and check if it is + * the special sentinal version word or the first word in the + * version response. + */ + resplen = sizeof(u32); + ret = ath10k_hif_exchange_bmi_msg(ar, &cmd, cmdlen, &tmp, &resplen); + if (ret) { + ath10k_warn(ar, "unable to read from device\n"); + return ret; + } + + /* Some SDIO boards have a special sentinal byte before the real + * version response. + */ + if (__le32_to_cpu(tmp) == TARGET_VERSION_SENTINAL) { + /* Step 1b: Read the version length */ + resplen = sizeof(u32); + ret = ath10k_hif_exchange_bmi_msg(ar, NULL, 0, &tmp, + &resplen); + if (ret) { + ath10k_warn(ar, "unable to read from device\n"); + return ret; + } + } + + ver_len = __le32_to_cpu(tmp); + + /* Step 2: Check the target info length */ + if (ver_len != sizeof(resp.get_target_info)) { + ath10k_warn(ar, "Unexpected target info len: %u. Expected: %zu\n", + ver_len, sizeof(resp.get_target_info)); + return -EINVAL; + } + + /* Step 3: Read the rest of the version response */ + resplen = sizeof(resp.get_target_info) - sizeof(u32); + ret = ath10k_hif_exchange_bmi_msg(ar, NULL, 0, + &resp.get_target_info.version, + &resplen); + if (ret) { + ath10k_warn(ar, "unable to read from device\n"); + return ret; + } + + target_info->version = __le32_to_cpu(resp.get_target_info.version); + target_info->type = __le32_to_cpu(resp.get_target_info.type); + + return 0; +} + int ath10k_bmi_read_memory(struct ath10k *ar, u32 address, void *buffer, u32 length) { diff --git a/drivers/net/wireless/ath/ath10k/bmi.h b/drivers/net/wireless/ath/ath10k/bmi.h index a65f26267fe3..2043d0080e7c 100644 --- a/drivers/net/wireless/ath/ath10k/bmi.h +++ b/drivers/net/wireless/ath/ath10k/bmi.h @@ -197,6 +197,8 @@ void ath10k_bmi_start(struct ath10k *ar); int ath10k_bmi_done(struct ath10k *ar); int ath10k_bmi_get_target_info(struct ath10k *ar, struct bmi_target_info *target_info); +int ath10k_bmi_get_target_info_sdio(struct ath10k *ar, + struct bmi_target_info *target_info); int ath10k_bmi_read_memory(struct ath10k *ar, u32 address, void *buffer, u32 length); int ath10k_bmi_write_memory(struct ath10k *ar, u32 address, diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c index 6b6ea8a571fa..d7fb11107df4 100644 --- a/drivers/net/wireless/ath/ath10k/core.c +++ b/drivers/net/wireless/ath/ath10k/core.c @@ -2197,7 +2197,10 @@ static int ath10k_core_probe_fw(struct ath10k *ar) } memset(&target_info, 0, sizeof(target_info)); - ret = ath10k_bmi_get_target_info(ar, &target_info); + if (ar->hif.bus == ATH10K_BUS_SDIO) + ret = ath10k_bmi_get_target_info_sdio(ar, &target_info); + else + ret = ath10k_bmi_get_target_info(ar, &target_info); if (ret) { ath10k_err(ar, "could not get target info (%d)\n", ret); goto err_power_down;