From 3939608591d1d0cbb79d7afd08beabcfb5eb115f Mon Sep 17 00:00:00 2001 From: Jay Sternberg Date: Thu, 12 Aug 2010 10:24:07 -0700 Subject: [PATCH] iwlwifi: enable experimental ucode support ucode firmware may need to be released as experimental for testing or debugging. released ucode filenames have the API version as the last component. experimental ucode files will have that component be "exp" and the fw_version string reported by ethtool will also contain the string EXP to clearly identify this ucode from released ucode. EXP is short for EXPERIMENTAL since fw_version has a max lenght on 32. this capability is controlled by Kconfig and defaulted to not be used. Signed-off-by: Jay Sternberg Signed-off-by: Wey-Yi Guy --- drivers/net/wireless/iwlwifi/Kconfig | 6 +++++ drivers/net/wireless/iwlwifi/iwl-agn.c | 33 +++++++++++++++++++------- 2 files changed, 31 insertions(+), 8 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/Kconfig b/drivers/net/wireless/iwlwifi/Kconfig index a51e4da1bdf..7ab5b51951f 100644 --- a/drivers/net/wireless/iwlwifi/Kconfig +++ b/drivers/net/wireless/iwlwifi/Kconfig @@ -36,6 +36,12 @@ config IWLWIFI_DEBUGFS is a low-impact option that allows getting insight into the driver's state at runtime. +config IWLWIFI_DEBUG_EXPERIMENTAL_UCODE + bool "Experimental uCode support" + depends on IWLWIFI && IWLWIFI_DEBUG + ---help--- + Enable use of experimental ucode for testing and debugging. + config IWLWIFI_DEVICE_TRACING bool "iwlwifi device access tracing" depends on IWLWIFI diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index f832535c3a4..40b82d9f309 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -1659,24 +1659,37 @@ static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context); static int iwl_mac_setup_register(struct iwl_priv *priv, struct iwlagn_ucode_capabilities *capa); +#define UCODE_EXPERIMENTAL_INDEX 100 +#define UCODE_EXPERIMENTAL_TAG "exp" + static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first) { const char *name_pre = priv->cfg->fw_name_pre; + char tag[8]; - if (first) + if (first) { +#ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE + priv->fw_index = UCODE_EXPERIMENTAL_INDEX; + strcpy(tag, UCODE_EXPERIMENTAL_TAG); + } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) { +#endif priv->fw_index = priv->cfg->ucode_api_max; - else + sprintf(tag, "%d", priv->fw_index); + } else { priv->fw_index--; + sprintf(tag, "%d", priv->fw_index); + } if (priv->fw_index < priv->cfg->ucode_api_min) { IWL_ERR(priv, "no suitable firmware found!\n"); return -ENOENT; } - sprintf(priv->firmware_name, "%s%d%s", - name_pre, priv->fw_index, ".ucode"); + sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode"); - IWL_DEBUG_INFO(priv, "attempting to load firmware '%s'\n", + IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n", + (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) + ? "EXPERIMENTAL " : "", priv->firmware_name); return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name, @@ -1971,8 +1984,10 @@ static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context) memset(&pieces, 0, sizeof(pieces)); if (!ucode_raw) { - IWL_ERR(priv, "request for firmware file '%s' failed.\n", - priv->firmware_name); + if (priv->fw_index <= priv->cfg->ucode_api_max) + IWL_ERR(priv, + "request for firmware file '%s' failed.\n", + priv->firmware_name); goto try_again; } @@ -2019,7 +2034,9 @@ static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context) api_max, api_ver); if (build) - sprintf(buildstr, " build %u", build); + sprintf(buildstr, " build %u%s", build, + (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) + ? " (EXP)" : ""); else buildstr[0] = '\0'; -- 2.20.1