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usb: udc: fix noncache usb transfer buffer

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CONFIG_UDC_BUF_FORCE_NOCACHE depend on NOCACHE_MEMORY && DCACHE in Kconfig,
so it can only be true when the platform supports cache.
The controller driver can imply the value of CONFIG_UDC_BUF_FORCE_NOCACHE,
like UDC_NXP_EHCI. If CONFIG_UDC_BUF_FORCE_NOCACHE is true, then all the
usb transfer buffer should be in noncache section.

Signed-off-by: Mark Wang <yichang.wang@nxp.com>
This commit is contained in:
Mark Wang 2024-12-18 22:52:13 +08:00 committed by Benjamin Cabé
parent aaa9a8777f
commit 21ae5576a7
1 changed files with 13 additions and 2 deletions
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15
include/zephyr/drivers/usb/udc_buf.h
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@ -34,6 +34,16 @@
#define Z_UDC_BUF_GRANULARITY sizeof(void *)
#endif
#if defined(CONFIG_UDC_BUF_FORCE_NOCACHE)
/*
* The usb transfer buffer needs to be in __nocache section
*/
#define Z_UDC_BUF_SECTION __nocache
#else
#define Z_UDC_BUF_SECTION
#endif
/**
* @brief Buffer macros and definitions used in USB device support
* @defgroup udc_buf Buffer macros and definitions used in USB device support
@ -59,7 +69,8 @@
* @param size Buffer size
*/
#define UDC_STATIC_BUF_DEFINE(name, size) \
static uint8_t __aligned(UDC_BUF_ALIGN) name[ROUND_UP(size, UDC_BUF_GRANULARITY)];
static uint8_t Z_UDC_BUF_SECTION __aligned(UDC_BUF_ALIGN) \
name[ROUND_UP(size, UDC_BUF_GRANULARITY)];
/**
* @brief Verify that the buffer is aligned as required by the UDC driver
@ -136,7 +147,7 @@ extern const struct net_buf_data_cb net_buf_dma_cb;
_NET_BUF_ARRAY_DEFINE(pname, count, ud_size); \
BUILD_ASSERT((UDC_BUF_GRANULARITY) % (UDC_BUF_ALIGN) == 0, \
"Code assumes granurality is multiple of alignment"); \
static uint8_t __nocache __aligned(UDC_BUF_ALIGN) \
static uint8_t Z_UDC_BUF_SECTION __aligned(UDC_BUF_ALIGN) \
net_buf_data_##pname[count][ROUND_UP(size, UDC_BUF_GRANULARITY)];\
static const struct net_buf_pool_fixed net_buf_fixed_##pname = { \
.data_pool = (uint8_t *)net_buf_data_##pname, \