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tests: drivers: dma: Refactor tests to use data relocation

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Eliminates dma tests' dependency on CONFIG_NOCACHE_MEMORY=y for
configuring dma data linker sections. This allows optionally relocating
dma source and destination data to sram or other custom linker section
on boards that don't support dma access to flash.

Signed-off-by: Maureen Helm <maureen.helm@analog.com>
This commit is contained in:
Maureen Helm 2023-11-14 17:38:25 -06:00 committed by Carles Cufí
parent 246ec224e2
commit 5ff4f46d9e
8 changed files with 18 additions and 32 deletions
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2
tests/drivers/dma/chan_blen_transfer/CMakeLists.txt
View file

@ -6,3 +6,5 @@ project(chan_blen_transfer)
FILE(GLOB app_sources src/*.c)
target_sources(app PRIVATE ${app_sources})
zephyr_code_relocate(FILES src/test_dma.c LOCATION ${CONFIG_DMA_LOOP_TRANSFER_RELOCATE_SECTION}_RODATA_BSS)

6
tests/drivers/dma/chan_blen_transfer/Kconfig
View file

@ -13,10 +13,10 @@ config DMA_TRANSFER_CHANNEL_NR_1
int "second DMA channel to use"
default 1
config DMA_LOOP_TRANSFER_SRAM_SECTION
config DMA_LOOP_TRANSFER_RELOCATE_SECTION
string "the section to place the memory buffers."
depends on NOCACHE_MEMORY
default ".nocache"
depends on CODE_DATA_RELOCATION
default "RAM"
config DMA_LOOP_TRANSFER_NUMBER_OF_DMAS
int "Number of DMAs to test"

3
tests/drivers/dma/chan_blen_transfer/boards/nucleo_h743zi.conf
View file

@ -5,7 +5,8 @@ CONFIG_DMA_LOOP_TRANSFER_NUMBER_OF_DMAS=2
# Required by BDMA which only has access to
# a NOCACHE SRAM4 section. All other DMAs also
# has access to this section.
CONFIG_DMA_LOOP_TRANSFER_SRAM_SECTION="SRAM4.dma"
CONFIG_CODE_DATA_RELOCATION=y
CONFIG_DMA_LOOP_TRANSFER_RELOCATE_SECTION="SRAM4"
# Required for SRAM4 to be non-cachable
CONFIG_NOCACHE_MEMORY=y

16
tests/drivers/dma/chan_blen_transfer/src/test_dma.c
View file

@ -22,16 +22,8 @@
#define RX_BUFF_SIZE (48)
#ifdef CONFIG_NOCACHE_MEMORY
static __aligned(32) char tx_data[RX_BUFF_SIZE] __used
__attribute__((__section__(CONFIG_DMA_LOOP_TRANSFER_SRAM_SECTION)));
static const char TX_DATA[] = "It is harder to be kind than to be wise........";
static __aligned(32) char rx_data[RX_BUFF_SIZE] __used
__attribute__((__section__(CONFIG_DMA_LOOP_TRANSFER_SRAM_SECTION".dma")));
#else
static const char tx_data[] = "It is harder to be kind than to be wise........";
static char rx_data[RX_BUFF_SIZE] = { 0 };
#endif
static __aligned(32) const char tx_data[] = "It is harder to be kind than to be wise........";
static __aligned(32) char rx_data[RX_BUFF_SIZE] = { 0 };
static void test_done(const struct device *dma_dev, void *arg,
uint32_t id, int status)
@ -53,10 +45,6 @@ static int test_task(const struct device *dma, uint32_t chan_id, uint32_t blen)
return TC_FAIL;
}
#ifdef CONFIG_NOCACHE_MEMORY
memcpy(tx_data, TX_DATA, sizeof(TX_DATA));
#endif
dma_cfg.channel_direction = MEMORY_TO_MEMORY;
dma_cfg.source_data_size = 1U;
dma_cfg.dest_data_size = 1U;

2
tests/drivers/dma/loop_transfer/CMakeLists.txt
View file

@ -6,3 +6,5 @@ project(loop_transfer)
FILE(GLOB app_sources src/*.c)
target_sources(app PRIVATE ${app_sources})
zephyr_code_relocate(FILES src/test_dma_loop.c LOCATION ${CONFIG_DMA_LOOP_TRANSFER_RELOCATE_SECTION}_RODATA_BSS)

6
tests/drivers/dma/loop_transfer/Kconfig
View file

@ -9,10 +9,10 @@ config DMA_LOOP_TRANSFER_CHANNEL_NR
int "DMA channel to use"
default 0
config DMA_LOOP_TRANSFER_SRAM_SECTION
config DMA_LOOP_TRANSFER_RELOCATE_SECTION
string "the section to place the memory buffers."
depends on NOCACHE_MEMORY
default ".nocache"
depends on CODE_DATA_RELOCATION
default "RAM"
config DMA_LOOP_TRANSFER_NUMBER_OF_DMAS
int "Number of DMAs to test"

3
tests/drivers/dma/loop_transfer/boards/nucleo_h743zi.conf
View file

@ -4,7 +4,8 @@ CONFIG_DMA_LOOP_TRANSFER_NUMBER_OF_DMAS=2
# Required by BDMA which only has access to
# a NOCACHE SRAM4 section. All other DMAs also
# has access to this section.
CONFIG_DMA_LOOP_TRANSFER_SRAM_SECTION="SRAM4.dma"
CONFIG_CODE_DATA_RELOCATION=y
CONFIG_DMA_LOOP_TRANSFER_RELOCATE_SECTION="SRAM4"
# Required for SRAM4 to be non-cachable
CONFIG_NOCACHE_MEMORY=y

12
tests/drivers/dma/loop_transfer/src/test_dma_loop.c
View file

@ -33,16 +33,8 @@
#define TRANSFER_LOOPS (4)
#if CONFIG_NOCACHE_MEMORY
static __aligned(32) uint8_t tx_data[CONFIG_DMA_LOOP_TRANSFER_SIZE] __used
__attribute__((__section__(CONFIG_DMA_LOOP_TRANSFER_SRAM_SECTION)));
static __aligned(32) uint8_t rx_data[TRANSFER_LOOPS][CONFIG_DMA_LOOP_TRANSFER_SIZE] __used
__attribute__((__section__(CONFIG_DMA_LOOP_TRANSFER_SRAM_SECTION".dma")));
#else
/* this src memory shall be in RAM to support usingas a DMA source pointer.*/
static uint8_t tx_data[CONFIG_DMA_LOOP_TRANSFER_SIZE];
static __aligned(16) uint8_t rx_data[TRANSFER_LOOPS][CONFIG_DMA_LOOP_TRANSFER_SIZE] = { { 0 } };
#endif
static __aligned(32) uint8_t tx_data[CONFIG_DMA_LOOP_TRANSFER_SIZE];
static __aligned(32) uint8_t rx_data[TRANSFER_LOOPS][CONFIG_DMA_LOOP_TRANSFER_SIZE] = { { 0 } };
volatile uint32_t transfer_count;
volatile uint32_t done;