adafruit-mirror/zephyr
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions 9

drivers: eth_mcux: move intermediate driver buffers into DTCM

Browse source 
move intermediate driver buffers into DTCM, to reduce copy latency

Performance change (as tested with iperf on RT1050)
TCP RX: 48.6Mbps->49.1Mbps
TCP TX: 40.7Mbps->40.8Mbps

Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
This commit is contained in:
Daniel DeGrasse 2022-08-04 17:53:32 -05:00 committed by Carles Cufí
parent 5dd5fab2b6
commit ee4a338bfd
1 changed files with 5 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
drivers/ethernet/eth_mcux.c
View file

@ -1523,12 +1523,15 @@ static void eth_mcux_err_isr(const struct device *dev)
/* Use DTCM for hardware DMA buffers */
#define _mcux_dma_desc __dtcm_bss_section
#define _mcux_dma_buffer __dtcm_noinit_section
#define _mcux_driver_buffer __dtcm_noinit_section
#elif defined(CONFIG_NOCACHE_MEMORY)
#define _mcux_dma_desc __nocache
#define _mcux_dma_buffer __nocache
#define _mcux_driver_buffer
#else
#define _mcux_dma_desc
#define _mcux_dma_buffer
#define _mcux_driver_buffer
#endif
#if defined(CONFIG_ETH_MCUX_PHY_RESET)
@ -1545,9 +1548,9 @@ static void eth_mcux_err_isr(const struct device *dev)
ETH_MCUX_PINCTRL_DEFINE(n) \
\
static void eth##n##_config_func(void); \
static uint8_t \
static _mcux_driver_buffer uint8_t \
tx_enet_frame_##n##_buf[NET_ETH_MAX_FRAME_SIZE]; \
static uint8_t \
static _mcux_driver_buffer uint8_t \
rx_enet_frame_##n##_buf[NET_ETH_MAX_FRAME_SIZE]; \
\
static mdio_handle_t eth##n##_mdio_handle = { \