Make firmware caching on startup optional, and make it default. When the option is not selected and PM_SLEEP is configured, then cache firmware in the suspend pm_notifier. This configuration saves about 64k RAM in normal use, but can lead to a situation where the driver is configured to use a different firmware. Signed-off by: David Kilroy <kilroyd@xxxxxxxxxxxxxx> --- drivers/net/wireless/Kconfig | 15 ++++++++ drivers/net/wireless/orinoco/orinoco.c | 57 ++++++++++++++++++++++++++++++++ drivers/net/wireless/orinoco/orinoco.h | 3 ++ 3 files changed, 75 insertions(+), 0 deletions(-) diff --git a/drivers/net/wireless/Kconfig b/drivers/net/wireless/Kconfig index 7ea916b..ea543fc 100644 --- a/drivers/net/wireless/Kconfig +++ b/drivers/net/wireless/Kconfig @@ -214,6 +214,21 @@ config HERMES configure your card and that /etc/pcmcia/wireless.opts works : <http://www.hpl.hp.com/personal/Jean_Tourrilhes/Linux/Tools.html> +config HERMES_CACHE_FW_ON_INIT + bool "Cache Hermes firmware on driver initialisation" + depends on HERMES + default y + ---help--- + Say Y to cache any firmware required by the Hermes drivers + on startup. The firmware will remain cached until the + driver is unloaded. The cache uses 64K of RAM. + + Otherwise load the firmware from userspace as required. In + this case the driver should be unloaded and restarted + whenever the firmware is changed. + + If you are not sure, say Y. + config APPLE_AIRPORT tristate "Apple Airport support (built-in)" depends on PPC_PMAC && HERMES diff --git a/drivers/net/wireless/orinoco/orinoco.c b/drivers/net/wireless/orinoco/orinoco.c index 4c8f4c2..40f662e 100644 --- a/drivers/net/wireless/orinoco/orinoco.c +++ b/drivers/net/wireless/orinoco/orinoco.c @@ -84,6 +84,7 @@ #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/firmware.h> +#include <linux/suspend.h> #include <linux/if_arp.h> #include <linux/wireless.h> #include <linux/ieee80211.h> @@ -712,6 +713,7 @@ static int orinoco_download(struct orinoco_private *priv) return err; } +#if defined(CONFIG_HERMES_CACHE_FW_ON_INIT) || defined(CONFIG_PM_SLEEP) static void orinoco_cache_fw(struct orinoco_private *priv, int ap) { const struct firmware *fw_entry = NULL; @@ -745,6 +747,10 @@ static void orinoco_uncache_fw(struct orinoco_private *priv) priv->cached_pri_fw = NULL; priv->cached_fw = NULL; } +#else +#define orinoco_cache_fw(priv, ap) +#define orinoco_uncache_fw(priv) +#endif /********************************************************************/ /* Device methods */ @@ -3103,6 +3109,50 @@ irqreturn_t orinoco_interrupt(int irq, void *dev_id) } /********************************************************************/ +/* Power management */ +/********************************************************************/ +#if defined(CONFIG_PM_SLEEP) && !defined(CONFIG_HERMES_CACHE_FW_ON_INIT) +static int orinoco_pm_notifier(struct notifier_block *notifier, + unsigned long pm_event, + void *unused) +{ + struct orinoco_private *priv = container_of(notifier, + struct orinoco_private, + pm_notifier); + + /* All we need to do is cache the firmware before suspend, and + * release it when we come out. + * + * Only need to do this if we're downloading firmware. */ + if (!priv->do_fw_download) + return NOTIFY_DONE; + + switch (pm_event) { + case PM_HIBERNATION_PREPARE: + case PM_SUSPEND_PREPARE: + orinoco_cache_fw(priv, 0); + break; + + case PM_POST_RESTORE: + /* Restore from hibernation failed. We need to clean + * up in exactly the same way, so fall through. */ + case PM_POST_HIBERNATION: + case PM_POST_SUSPEND: + orinoco_uncache_fw(priv); + break; + + case PM_RESTORE_PREPARE: + default: + break; + } + + return NOTIFY_DONE; +} +#else /* !PM_SLEEP || HERMES_CACHE_FW_ON_INIT */ +#define orinoco_pm_notifier NULL +#endif + +/********************************************************************/ /* Initialization */ /********************************************************************/ @@ -3346,7 +3396,9 @@ static int orinoco_init(struct net_device *dev) } if (priv->do_fw_download) { +#ifdef CONFIG_HERMES_CACHE_FW_ON_INIT orinoco_cache_fw(priv, 0); +#endif err = orinoco_download(priv); if (err) @@ -3587,6 +3639,10 @@ struct net_device priv->cached_pri_fw = NULL; priv->cached_fw = NULL; + /* Register PM notifiers */ + priv->pm_notifier.notifier_call = orinoco_pm_notifier; + register_pm_notifier(&priv->pm_notifier); + return dev; } @@ -3599,6 +3655,7 @@ void free_orinocodev(struct net_device *dev) * emptying the list */ tasklet_kill(&priv->rx_tasklet); + unregister_pm_notifier(&priv->pm_notifier); orinoco_uncache_fw(priv); priv->wpa_ie_len = 0; diff --git a/drivers/net/wireless/orinoco/orinoco.h b/drivers/net/wireless/orinoco/orinoco.h index f6eaea9..00750c8 100644 --- a/drivers/net/wireless/orinoco/orinoco.h +++ b/drivers/net/wireless/orinoco/orinoco.h @@ -10,6 +10,7 @@ #define DRIVER_VERSION "0.15" #include <linux/interrupt.h> +#include <linux/suspend.h> #include <linux/netdevice.h> #include <linux/wireless.h> #include <net/iw_handler.h> @@ -170,6 +171,8 @@ struct orinoco_private { /* Cached in memory firmware to use during ->resume. */ const struct firmware *cached_pri_fw; const struct firmware *cached_fw; + + struct notifier_block pm_notifier; }; #ifdef ORINOCO_DEBUG -- 1.5.6.4 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
