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Remove card_enable_monitoring() and use a mutex instead. The card_enable_monitoring() method actually didn't eliminate the possible race conditions it was meant to fix.

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26627 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Frank Gevaerts 2010-06-06 13:20:47 +00:00
parent 4a2cab6aa1
commit 9c43b2ce17
12 changed files with 73 additions and 125 deletions
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3
apps/main.c
View file

@ -342,6 +342,7 @@ static void init(void)
sb_skin_init();
viewportmanager_init();
disk_init_subsystem();
storage_init();
settings_reset();
settings_load(SETTINGS_ALL);
@ -506,6 +507,8 @@ static void init(void)
}
#endif
disk_init_subsystem();
CHART(">storage_init");
rc = storage_init();
CHART("<storage_init");

34
firmware/common/disk.c
View file

@ -19,11 +19,11 @@
*
****************************************************************************/
#include <stdio.h>
#include "kernel.h"
#include "storage.h"
#include "debug.h"
#include "fat.h"
#ifdef HAVE_HOTSWAP
#include "sdmmc.h" /* for card_enable_monitoring() */
#include "dir.h" /* for release_dirs() */
#include "file.h" /* for release_files() */
#endif
@ -60,12 +60,13 @@ static const unsigned char fat_partition_types[] = {
static struct partinfo part[NUM_DRIVES*4]; /* space for 4 partitions on 2 drives */
static int vol_drive[NUM_VOLUMES]; /* mounted to which drive (-1 if none) */
static struct mutex disk_mutex;
#ifdef MAX_LOG_SECTOR_SIZE
int disk_sector_multiplier = 1;
#endif
struct partinfo* disk_init(IF_MD_NONVOID(int drive))
static struct partinfo* disk_init(IF_MD_NONVOID(int drive))
{
int i;
unsigned char sector[SECTOR_SIZE];
@ -113,13 +114,18 @@ struct partinfo* disk_partinfo(int partition)
return &part[partition];
}
void disk_init_subsystem(void)
{
mutex_init(&disk_mutex);
}
int disk_mount_all(void)
{
int mounted=0;
int i;
#ifdef HAVE_HOTSWAP
card_enable_monitoring(false);
mutex_lock(&disk_mutex);
#endif
fat_init(); /* reset all mounted partitions */
@ -139,9 +145,8 @@ int disk_mount_all(void)
#endif
#ifdef HAVE_HOTSWAP
card_enable_monitoring(true);
mutex_unlock(&disk_mutex);
#endif
return mounted;
}
@ -160,11 +165,21 @@ static int get_free_volume(void)
int disk_mount(int drive)
{
int mounted = 0; /* reset partition-on-drive flag */
int volume = get_free_volume();
struct partinfo* pinfo = disk_init(IF_MD(drive));
int volume;
struct partinfo* pinfo;
#ifdef HAVE_HOTSWAP
mutex_lock(&disk_mutex);
#endif
volume = get_free_volume();
pinfo = disk_init(IF_MD(drive));
if (pinfo == NULL)
{
#ifdef HAVE_HOTSWAP
mutex_unlock(&disk_mutex);
#endif
return 0;
}
#if defined(TOSHIBA_GIGABEAT_S)
@ -214,6 +229,9 @@ int disk_mount(int drive)
vol_drive[volume] = drive; /* remember the drive for this volume */
}
}
#ifdef HAVE_HOTSWAP
mutex_unlock(&disk_mutex);
#endif
return mounted;
}
@ -222,6 +240,7 @@ int disk_unmount(int drive)
{
int unmounted = 0;
int i;
mutex_lock(&disk_mutex);
for (i=0; i<NUM_VOLUMES; i++)
{
if (vol_drive[i] == drive)
@ -233,6 +252,7 @@ int disk_unmount(int drive)
fat_unmount(i, false);
}
}
mutex_unlock(&disk_mutex);
return unmounted;
}

18
firmware/drivers/ata_mmc.c
View file

@ -93,7 +93,6 @@ static long last_disk_activity = -1;
static struct mutex mmc_mutex;
#ifdef HAVE_HOTSWAP
static bool mmc_monitor_enabled = true;
static long mmc_stack[((DEFAULT_STACK_SIZE*2) + 0x800)/sizeof(long)];
#else
static long mmc_stack[(DEFAULT_STACK_SIZE*2)/sizeof(long)];
@ -130,7 +129,9 @@ static tCardInfo card_info[2];
static int current_card = 0;
#endif
static bool last_mmc_status = false;
static int countdown = HZ/3; /* for mmc switch debouncing */
static int countdown = -1; /* for mmc switch debouncing. -1 because the
countdown should not happen if the card
is inserted at boot */
static bool usb_activity; /* monitoring the USB bridge */
static long last_usb_activity;
@ -807,13 +808,6 @@ static void mmc_thread(void)
}
}
#ifdef HAVE_HOTSWAP
void mmc_enable_monitoring(bool on)
{
mmc_monitor_enabled = on;
}
#endif
bool mmc_detect(void)
{
return (adc_read(ADC_MMC_SWITCH) < 0x200);
@ -846,9 +840,6 @@ bool mmc_usb_active(int delayticks)
static void mmc_tick(void)
{
bool current_status;
#ifndef HAVE_HOTSWAP
const bool mmc_monitor_enabled = true;
#endif
if (new_mmc_circuit)
/* USB bridge activity is 0 on idle, ~527 on active */
@ -860,8 +851,6 @@ static void mmc_tick(void)
last_usb_activity = current_tick;
usb_activity = current_status;
if (mmc_monitor_enabled)
{
current_status = mmc_detect();
/* Only report when the status has changed */
if (current_status != last_mmc_status)
@ -889,7 +878,6 @@ static void mmc_tick(void)
}
}
}
}
}
void mmc_enable(bool on)

3
firmware/export/disk.h
View file

@ -35,8 +35,9 @@ struct partinfo {
#define PARTITION_TYPE_OS2_HIDDEN_C_DRIVE 0x84
/* returns a pointer to an array of 8 partinfo structs */
struct partinfo* disk_init(IF_MD_NONVOID(int drive));
struct partinfo* disk_partinfo(int partition);
void disk_init_subsystem(void); /* Initialises mutexes */
int disk_mount_all(void); /* returns the # of successful mounts */
int disk_mount(int drive);
int disk_unmount(int drive);

1
firmware/export/sd.h
View file

@ -48,7 +48,6 @@ void sd_get_info(IF_MD2(int drive,) struct storage_info *info);
#ifdef HAVE_HOTSWAP
bool sd_removable(IF_MV_NONVOID(int drive));
bool sd_present(IF_MV_NONVOID(int drive));
void card_enable_monitoring_target(bool on);
#endif
long sd_last_disk_activity(void);

5
firmware/export/sdmmc.h
View file

@ -57,17 +57,12 @@ typedef struct
tCardInfo *card_get_info_target(int card_no);
void sd_parse_csd(tCardInfo *card);
#ifdef HAVE_HOTSWAP
#define card_enable_monitoring card_enable_monitoring_target
#endif
#else /* STORAGE_MMC */
#include "ata_mmc.h"
#define card_get_info mmc_card_info
tCardInfo *mmc_card_info(int card_no);
#define card_touched mmc_touched
#define card_enable_monitoring mmc_enable_monitoring
#endif

12
firmware/target/arm/as3525/sd-as3525.c
View file

@ -508,6 +508,8 @@ static void init_pl180_controller(const int drive)
GPIOA_IS &= ~EXT_SD_BITS;
/* detect both raising and falling edges */
GPIOA_IBE |= EXT_SD_BITS;
/* enable the card detect interrupt */
GPIOA_IE |= EXT_SD_BITS;
#else
VIC_INT_ENABLE = INTERRUPT_NAND;
@ -922,16 +924,6 @@ tCardInfo *card_get_info_target(int card_no)
return &card_info[card_no];
}
#ifdef HAVE_HOTSWAP
void card_enable_monitoring_target(bool on)
{
if (on) /* enable interrupt */
GPIOA_IE |= EXT_SD_BITS;
else /* disable interrupt */
GPIOA_IE &= ~EXT_SD_BITS;
}
#endif /* HAVE_HOTSWAP */
#endif /* !BOOTLOADER */
#ifdef CONFIG_STORAGE_MULTI

11
firmware/target/arm/as3525/sd-as3525v2.c
View file

@ -731,6 +731,9 @@ int sd_init(void)
GPIOA_IS &= ~EXT_SD_BITS;
/* detect both raising and falling edges */
GPIOA_IBE |= EXT_SD_BITS;
/* enable the card detect interrupt */
GPIOA_IE |= EXT_SD_BITS;
/* Configure XPD for SD-MCI interface */
CCU_IO |= (1<<2);
#endif
@ -989,14 +992,6 @@ void sd_gpioa_isr(void)
/* acknowledge interrupt */
GPIOA_IC = EXT_SD_BITS;
}
void card_enable_monitoring_target(bool on)
{
if (on) /* enable interrupt */
GPIOA_IE |= EXT_SD_BITS;
else /* disable interrupt */
GPIOA_IE &= ~EXT_SD_BITS;
}
#endif /* HAVE_HOTSWAP */
#ifdef CONFIG_STORAGE_MULTI

27
firmware/target/arm/ata-sd-pp.c
View file

@ -1190,27 +1190,6 @@ void sd_enable(bool on)
}
}
#ifdef HAVE_HOTSWAP
void card_enable_monitoring_target(bool on)
{
if (on)
{
#ifdef SANSA_E200
GPIO_SET_BITWISE(GPIOA_INT_EN, 0x80);
#elif defined(SANSA_C200)
GPIO_SET_BITWISE(GPIOL_INT_EN, 0x08);
#endif
}
else
{
#ifdef SANSA_E200
GPIO_CLEAR_BITWISE(GPIOA_INT_EN, 0x80);
#elif defined(SANSA_C200)
GPIO_CLEAR_BITWISE(GPIOL_INT_EN, 0x08);
#endif
}
}
#endif
int sd_init(void)
{
@ -1275,6 +1254,9 @@ int sd_init(void)
GPIOA_INT_LEV = (0x80 << 8) | (~GPIOA_INPUT_VAL & 0x80);
GPIOA_INT_CLR = 0x80;
/* enable the card detect interrupt */
GPIO_SET_BITWISE(GPIOA_INT_EN, 0x80);
#elif defined SANSA_C200
CPU_INT_EN = HI_MASK;
CPU_HI_INT_EN = GPIO2_MASK;
@ -1282,6 +1264,9 @@ int sd_init(void)
GPIOL_INT_LEV = (0x08 << 8) | (~GPIOL_INPUT_VAL & 0x08);
GPIOL_INT_CLR = 0x08;
/* enable the card detect interrupt */
GPIO_SET_BITWISE(GPIOL_INT_EN, 0x08);
#endif
#endif
}

21
firmware/target/arm/s3c2440/sd-s3c2440.c
View file

@ -270,6 +270,11 @@ static void init_sdi_controller(const int card_no)
/* Card Detect input */
S3C2440_GPIO_CONFIG (GPGCON, 8, GPIO_INPUT);
/* enable external irq 8-23 on the internal interrupt controller */
INTMSK &= ~1<<5;
/* enable GPG8 IRQ on the external interrupt controller */
EINTMASK &= ~(1<<16);
/* Write Protect input */
S3C2440_GPIO_CONFIG (GPHCON, 8, GPIO_INPUT);
@ -523,22 +528,6 @@ static int sd1_oneshot_callback(struct timeout *tmo)
return 0;
}
void card_enable_monitoring_target(bool on)
{
if (on)
{ /* enable external irq 8-23 on the internal interrupt controller */
INTMSK &= ~1<<5;
/* enable GPG8 IRQ on the external interrupt controller */
EINTMASK &= ~(1<<16);
}
else
{
/* mask internal and external IRQs */
INTMSK |= 1<<5;
EINTMASK |= (1<<16);
}
}
void EINT8_23(void)
{
static struct timeout sd1_oneshot;

13
firmware/target/arm/tcc780x/sd-tcc780x.c
View file

@ -214,18 +214,6 @@ static inline bool card_detect_target(void)
#endif
}
void card_enable_monitoring_target(bool on)
{
if (on)
{
IEN |= EXT0_IRQ_MASK;
}
else
{
IEN &= ~EXT0_IRQ_MASK;
}
}
static int sd1_oneshot_callback(struct timeout *tmo)
{
(void)tmo;
@ -786,6 +774,7 @@ int sd_init(void)
/* Configure interrupts for the card slot */
TMODE &= ~EXT0_IRQ_MASK; /* edge-triggered */
TMODEA |= EXT0_IRQ_MASK; /* trigger on both edges */
IEN |= EXT0_IRQ_MASK; /* enable the interrupt */
#endif
}

8
firmware/target/mips/ingenic_jz47xx/ata-sd-jz4740.c
View file

@ -1412,14 +1412,6 @@ bool sd_removable(IF_MV_NONVOID(int drive))
return true;
}
void card_enable_monitoring_target(bool on)
{
if(on)
sd_gpio_setup_irq(card_detect_target());
else
__gpio_mask_irq(MMC_CD_PIN);
}
static int sd_oneshot_callback(struct timeout *tmo)
{
(void)tmo;