From ff25b3a20838241da597212a5faf9cb275420ab7 Mon Sep 17 00:00:00 2001 From: Michael Sevakis Date: Fri, 21 May 2010 15:33:31 +0000 Subject: ata: do some threading-related corrections (some sync related where it matters). Make sure 'sleeping' is 'false' before the powerup sequence (throws-off powermgmt and it *is* about to woken again and powermgmt will need to compensate). Avoid looking at mutex flag directly; there's no tangible benefit I can discern and changes to the kernel that alter the meaning shouldn't be able to break anything. For that, in the jz sd driver, have sd_disk_is_active just return 'false' like all the other SD drivers do. If it *must* return this, it should implement it's own method but it seems to not matter. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26234 a1c6a512-1295-4272-9138-f99709370657 --- firmware/drivers/ata.c | 43 +++++++++++----------- .../target/mips/ingenic_jz47xx/ata-sd-jz4740.c | 2 +- 2 files changed, 23 insertions(+), 22 deletions(-) (limited to 'firmware') diff --git a/firmware/drivers/ata.c b/firmware/drivers/ata.c index ff463e52d1..1d738f5bc2 100644 --- a/firmware/drivers/ata.c +++ b/firmware/drivers/ata.c @@ -371,6 +371,7 @@ static int ata_transfer_sectors(unsigned long start, ata_led(true); if ( sleeping ) { + sleeping = false; /* set this now since it'll be on */ spinup = true; if (poweroff) { if (ata_power_on()) { @@ -467,7 +468,6 @@ static int ata_transfer_sectors(unsigned long start, if (spinup) { spinup_time = current_tick - spinup_start; spinup = false; - sleeping = false; poweroff = false; } } @@ -497,7 +497,6 @@ static int ata_transfer_sectors(unsigned long start, if (spinup) { spinup_time = current_tick - spinup_start; spinup = false; - sleeping = false; poweroff = false; } @@ -817,13 +816,16 @@ bool ata_disk_is_active(void) static int ata_perform_sleep(void) { - mutex_lock(&ata_mtx); + /* guard against calls made with checks of these variables outside + the mutex that may not be on the ata thread; status may have changed. */ + if (spinup || sleeping) { + return 0; + } SET_REG(ATA_SELECT, ata_device); if(!wait_for_rdy()) { DEBUGF("ata_perform_sleep() - not RDY\n"); - mutex_unlock(&ata_mtx); return -1; } @@ -832,12 +834,10 @@ static int ata_perform_sleep(void) if (!wait_for_rdy()) { DEBUGF("ata_perform_sleep() - CMD failed\n"); - mutex_unlock(&ata_mtx); return -2; } sleeping = true; - mutex_unlock(&ata_mtx); return 0; } @@ -848,10 +848,12 @@ void ata_sleep(void) void ata_sleepnow(void) { - if (!spinup && !sleeping && !ata_mtx.locked && initialized) + if (!spinup && !sleeping && initialized) { call_storage_idle_notifys(false); + mutex_lock(&ata_mtx); ata_perform_sleep(); + mutex_unlock(&ata_mtx); } } @@ -864,7 +866,6 @@ static void ata_thread(void) { static long last_sleep = 0; struct queue_event ev; - static long last_seen_mtx_unlock = 0; #ifdef ALLOW_USB_SPINDOWN static bool usb_mode = false; #endif @@ -876,21 +877,17 @@ static void ata_thread(void) case SYS_TIMEOUT: if (!spinup && !sleeping) { - if (!ata_mtx.locked) + if (TIME_AFTER( current_tick, + last_disk_activity + (HZ*2) ) ) { - if (!last_seen_mtx_unlock) - last_seen_mtx_unlock = current_tick; - if (TIME_AFTER(current_tick, last_seen_mtx_unlock+(HZ*2))) - { #ifdef ALLOW_USB_SPINDOWN - if(!usb_mode) + if(!usb_mode) #endif - { - call_storage_idle_notifys(false); - } - last_seen_mtx_unlock = 0; + { + call_storage_idle_notifys(false); } } + if ( sleep_timeout && TIME_AFTER( current_tick, last_user_activity + sleep_timeout ) && @@ -903,8 +900,10 @@ static void ata_thread(void) { call_storage_idle_notifys(true); } + mutex_lock(&ata_mtx); ata_perform_sleep(); last_sleep = current_tick; + mutex_unlock(&ata_mtx); } } @@ -929,9 +928,11 @@ static void ata_thread(void) usb_acknowledge(SYS_USB_CONNECTED_ACK); /* There is no need to force ATA power on */ #else + mutex_lock(&ata_mtx); if (sleeping) { - mutex_lock(&ata_mtx); ata_led(true); + sleeping = false; /* set this now since it'll be on */ + if (poweroff) { ata_power_on(); poweroff = false; @@ -939,10 +940,10 @@ static void ata_thread(void) else { perform_soft_reset(); } - sleeping = false; + ata_led(false); - mutex_unlock(&ata_mtx); } + mutex_unlock(&ata_mtx); /* Wait until the USB cable is extracted again */ usb_acknowledge(SYS_USB_CONNECTED_ACK); diff --git a/firmware/target/mips/ingenic_jz47xx/ata-sd-jz4740.c b/firmware/target/mips/ingenic_jz47xx/ata-sd-jz4740.c index b558c4f87c..13fe1d69a9 100644 --- a/firmware/target/mips/ingenic_jz47xx/ata-sd-jz4740.c +++ b/firmware/target/mips/ingenic_jz47xx/ata-sd-jz4740.c @@ -1395,7 +1395,7 @@ void sd_sleepnow(void) bool sd_disk_is_active(void) { - return sd_mtx.locked; + return false; } int sd_soft_reset(void) -- cgit v1.2.3