In ARM document regarding memory barrires, SP_DMB() must be issued
before changing a spinlock state to SP_UNLOCKED. However, we found
that SP_DSB() is also needed to ensure that spin_unlock() works
correctly for network streaming aging test.
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
In lc823450, ldrex and strex are not supported. So we implemented
up_testset() with H/W Mutex. However, there was a bug in memory
access order. This change ensures correct memory access order in
up_testset() for lc823450.
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
lc823450 http streaming
* arch/arm/src/lc823450: Use spinlock APIs in lc823450_gpio.c
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
* arch/arm/src/lc823450: Add a warning message in up_ack_irq()
In SMP mode, H/W interrupts should be handled on CPU0 to avoid deadlocks.
Other changes:
Fix a potential race condition in up_enable_irq()
Use spinlock APIs instead of critical section APIs.
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
* arch/arm/src/lc823450: Enable HRT_TIMER in lc823450_timerisr.c
Other changes:
Fix style violations and call up_enable_irq() to assign CPU0 for IRQ handling.
Use spinlock APIs instead of critical section APIs.
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
* arch/arm/src/lc823450: Fix race conditions in dma/usbdev.
In SMP mode, critical data must be protected explicitly.
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
* configs/lc823450-xgevk: Update README.txt
Add notes on .gdbinit and networking. Update comments on SMP.
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
* configs/lc823450-xgevk: Update defconfigs
Enable HRT_TIMER, LC823450_MTM0_TICK, SPINLOCK_IRQ
Enable NET_TCP_RWND_CONTROL, NXPLAYER_HTTP_STREAMING_SUPPORT (rndis only)
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
Approved-by: Gregory Nutt <gnutt@nuttx.org>
arch/arm/src/lpc54xx: Adds the LPC54-specific clock configuration logic to the leveraged SD/MMC driver.
arch/arm/src/lpc54xx: Leveraged SD/MMC driver builds without error but is still missing clock configuration logic.
arch/arm/src/lpc54xx: Bring in LPC43xx SD/MMC driver from https://github.com/Smoothieware/smoothie-nuttx/tree/master/nuttx/arch/arm/src/lpc43xx
net/tcp: Introduce tcp receive window control based on I/O buffer
NOTE: The algorithm is still experimental but useful for http streaming.
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
Approved-by: Gregory Nutt <gnutt@nuttx.org>
sched/sched: Remove DEBUGASSERT() in sched_mergepending()
Because this DEBUGASSERT() assumes that while loop executes only once.
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
Approved-by: Gregory Nutt <gnutt@nuttx.org>
