sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

SAMA5: Fix HSMCI race condition. Now memory card interface is functional with DMA

Browse Source
This commit is contained in:
Gregory Nutt 2013-08-10 18:01:23 -06:00
parent 141a75c9db
commit cddedcde9b
4 changed files with 85 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
configs/sam3u-ek/README.txt
View File

@ -640,14 +640,44 @@ Configurations
CONFIG_DEBUG_VERBOSE=y : Enable verbose debug output
CONFIG_DEBUG_INPUT=y : Enable debug output from input devices
STATUS:
2013-6-28: The touchscreen is functional.
2013-6-29: Hmmm... but there appear to be conditions when the
touchscreen driver locks up. Looks like some issue with
managing the interrupts.
2013-6-30: Those lock-ups appear to be due to poorly placed
debug output statements. If you do not enable debug output,
the touchscreen is rock-solid.
3. Enabling HSMCI support. The SAM3U-KE provides a an SD memory card
slot. Support for the SD slot can be enabled with the following
settings:
System Type->ATSAM3/4 Peripheral Support
CONFIG_SAM34_HSMCI=y : Enable HSMCI support
CONFIG_SAM34_DMA=y : DMAC support is needed by HSMCI
System Type
CONFIG_SAM34_GPIO_IRQ=y : PIO interrupts needed
CONFIG_SAM34_GPIOA_IRQ=y : Card detect pin is on PIOA
Device Drivers -> MMC/SD Driver Support
CONFIG_MMCSD=y : Enable MMC/SD support
CONFIG_MMSCD_NSLOTS=1 : One slot per driver instance
CONFIG_MMCSD_HAVECARDDETECT=y : Supports card-detect PIOs
CONFIG_MMCSD_SDIO=y : SDIO-based MMC/SD support
CONFIG_SDIO_DMA=y : Use SDIO DMA
CONFIG_SDIO_BLOCKSETUP=y : Needs to know block sizes
Library Routines
CONFIG_SCHED_WORKQUEUE=y : Driver needs work queue support
Application Configuration -> NSH Library
CONFIG_NSH_ARCHINIT=y : NSH board-initialization
STATUS:
2013-6-28: The touchscreen is functional.
2013-6-29: Hmmm... but there appear to be conditions when the
touchscreen driver locks up. Looks like some issue with
managing the interrupts.
2013-6-30: Those lock-ups appear to be due to poorly placed
debug output statements. If you do not enable debug output,
the touchscreen is rock-solid.
2013-8-10: Added the comments above above enabling HSMCI memory
card support and verified that the configuration builds without
error. However, that configuration has not yet been tested (and
is may even be incomplete).
nx:
Configures to use examples/nx using the HX834x LCD hardware on

45
configs/sam3u-ek/nsh/defconfig
View File

@ -73,10 +73,17 @@ CONFIG_ARCH="arm"
# CONFIG_ARCH_CHIP_LPC31XX is not set
# CONFIG_ARCH_CHIP_LPC43XX is not set
# CONFIG_ARCH_CHIP_NUC1XX is not set
# CONFIG_ARCH_CHIP_SAMA5 is not set
CONFIG_ARCH_CHIP_SAM34=y
# CONFIG_ARCH_CHIP_STM32 is not set
# CONFIG_ARCH_CHIP_STR71X is not set
# CONFIG_ARCH_ARM7TDMI is not set
# CONFIG_ARCH_ARM926EJS is not set
# CONFIG_ARCH_ARM920T is not set
# CONFIG_ARCH_CORTEXM0 is not set
CONFIG_ARCH_CORTEXM3=y
# CONFIG_ARCH_CORTEXM4 is not set
# CONFIG_ARCH_CORTEXA5 is not set
CONFIG_ARCH_FAMILY="armv7-m"
CONFIG_ARCH_CHIP="sam34"
# CONFIG_ARMV7M_USEBASEPRI is not set
@ -93,6 +100,10 @@ CONFIG_ARMV7M_TOOLCHAIN_BUILDROOT=y
# CONFIG_ARMV7M_TOOLCHAIN_GNU_EABIL is not set
CONFIG_ARMV7M_OABI_TOOLCHAIN=y
# CONFIG_GPIO_IRQ is not set
CONFIG_ARCH_HAVE_EXTNAND=y
CONFIG_ARCH_HAVE_EXTNOR=y
CONFIG_ARCH_HAVE_EXTSRAM0=y
CONFIG_ARCH_HAVE_EXTSRAM1=y
#
# AT91SAM3/4 Configuration Options
@ -162,26 +173,18 @@ CONFIG_SAM34_UART0=y
# CONFIG_SAM34_WDT is not set
# CONFIG_SAM34_HSMCI is not set
#
# AT91SAM3/4 USART Configuration
#
#
# AT91SAM3/4 GPIO Interrupt Configuration
#
#
# External Memory Configuration
#
CONFIG_ARCH_HAVE_EXTNAND=y
CONFIG_ARCH_HAVE_EXTNOR=y
CONFIG_ARCH_HAVE_EXTSRAM0=y
CONFIG_ARCH_HAVE_EXTSRAM1=y
# CONFIG_SAM34_EXTNAND is not set
# CONFIG_SAM34_EXTNOR is not set
# CONFIG_SAM34_EXTSRAM0 is not set
# CONFIG_SAM34_EXTSRAM1 is not set
#
# AT91SAM3/4 GPIO Interrupt Configuration
#
#
# Architecture Options
#
@ -204,8 +207,6 @@ CONFIG_ARCH_HAVE_RAMVECTORS=y
#
CONFIG_BOARD_LOOPSPERMSEC=8720
# CONFIG_ARCH_CALIBRATION is not set
CONFIG_RAM_START=0x20000000
CONFIG_RAM_SIZE=32768
CONFIG_ARCH_HAVE_INTERRUPTSTACK=y
CONFIG_ARCH_INTERRUPTSTACK=0
@ -218,6 +219,12 @@ CONFIG_BOOT_RUNFROMFLASH=y
# CONFIG_BOOT_RUNFROMSDRAM is not set
# CONFIG_BOOT_COPYTORAM is not set
#
# Boot Memory Configuration
#
CONFIG_RAM_START=0x20000000
CONFIG_RAM_SIZE=32768
#
# Board Selection
#
@ -332,6 +339,10 @@ CONFIG_SERIAL=y
# CONFIG_DEV_LOWCONSOLE is not set
# CONFIG_16550_UART is not set
CONFIG_ARCH_HAVE_UART0=y
#
# USART Configuration
#
CONFIG_MCU_SERIAL=y
CONFIG_STANDARD_SERIAL=y
CONFIG_UART0_SERIAL_CONSOLE=y
@ -577,6 +588,7 @@ CONFIG_NSH_BUILTIN_APPS=y
# CONFIG_NSH_DISABLE_CAT is not set
# CONFIG_NSH_DISABLE_CD is not set
# CONFIG_NSH_DISABLE_CP is not set
# CONFIG_NSH_DISABLE_CMP is not set
# CONFIG_NSH_DISABLE_DD is not set
# CONFIG_NSH_DISABLE_ECHO is not set
# CONFIG_NSH_DISABLE_EXEC is not set
@ -693,3 +705,8 @@ CONFIG_READLINE_ECHO=y
#
# USB Monitor
#
#
# Zmodem Commands
#
# CONFIG_SYSTEM_ZMODEM is not set

9
configs/sam3u-ek/src/up_mmcsd.c
View File

@ -55,12 +55,21 @@
* when the interrupt indicating that a card has been inserted or removed is received,
* this function must call sio_mediachange() to handle that event. See
* arch/arm/src/sam34/sam_hsmci.h for more information.
*
* Also see the SAMA5D3x-EK implementation of this same logic. The card detect
* interrupt handling should be a drop-in.
*/
#ifdef GPIO_MCI_CD
# warning "Card detect interrupt handling needed"
#endif
/* Usually defined in NuttX header files */
#ifndef OK
# define OK 0
#endif
/************************************************************************************
* Private Functions
************************************************************************************/

10
configs/sama5d3x-ek/README.txt
View File

@ -1027,10 +1027,11 @@ Configurations
CONFIG_SAMA5_DMAC0=y : DMAC0 is needed by HSMCI0
CONFIG_SAMA5_DMAC1=y : DMAC1 is needed by HSMCI1
System Type
CONFIG_SAMA5_PIO_IRQ=y : PIO interrupts needed
CONFIG_SAMA5_PIOD_IRQ=y : Card detect pins are on PIOD
Device Drivers ->
Device Drivers -> MMC/SD Driver Support
CONFIG_MMCSD=y : Enable MMC/SD support
CONFIG_MMSCD_NSLOTS=1 : One slot per driver instance
CONFIG_MMCSD_HAVECARDDETECT=y : Supports card-detect PIOs
@ -1074,9 +1075,12 @@ Configurations
where the memory test fails! No idea why.
2013-8-5: The AT25 configuration has been verified to be functional.
2013-9-9: The AT25 configuration has been verified with DMA
2013-8-9: The AT25 configuration has been verified with DMA
enabled.
2013-8-10: Basic HSCMI1 functionality (with DMA) has been verified.
Most testing is needed to assure that this is a stable solution.
ostest:
This configuration directory, performs a simple OS test using
examples/ostest.
@ -1133,7 +1137,7 @@ Configurations
configuration to start the program in NOR FLASH (see just above).
See "Creating and Using NORBOOT" above.
2013-7-31: The OS test configuration is basically functional, but
2013-7-31: The OS test configuration is basically functional, but
takes a very long time in the round-robin scheduler test computing
prime numbers. This test is supposed to be slow -- like several
seconds -- but not many minutes. No idea why yet. The best guess