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imxrt:usb DMA cache aligned Buffers for Endpoints

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This commit is contained in:
David Sidrane 2021-11-04 05:10:03 -07:00 committed by Xiang Xiao
parent bd2bc1e351
commit 95f7f4b9e6
1 changed files with 13 additions and 4 deletions
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17
arch/arm/src/imxrt/imxrt_usbdev.c
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@ -204,6 +204,14 @@ const struct trace_msg_t g_usb_trace_strings_intdecode[] =
};
#endif
#if defined(CONFIG_ARMV7M_DCACHE)
# define cache_aligned_alloc(s) kmm_memalign(ARMV7M_DCACHE_LINESIZE,(s))
# define CACHE_ALIGNED_DATA aligned_data(ARMV7M_DCACHE_LINESIZE)
#else
# define cache_aligned_alloc kmm_malloc
# define CACHE_ALIGNED_DATA
#endif
/* Hardware interface *******************************************************/
/* This represents a Endpoint Transfer Descriptor - note these must be 32
@ -358,7 +366,8 @@ struct imxrt_usbdev_s
/* IMXRTXX-specific fields */
uint8_t ep0state; /* State of certain EP0 operations */
uint8_t ep0buf[64]; /* buffer for EP0 short transfers */
/* buffer for EP0 short transfers */
uint8_t ep0buf[64] CACHE_ALIGNED_DATA;
uint8_t paddr; /* Address assigned by SETADDRESS */
uint8_t stalled:1; /* 1: Protocol stalled */
uint8_t selfpowered:1; /* 1: Device is self powered */
@ -751,7 +760,6 @@ static inline void imxrt_writedtd(struct imxrt_dtd_s *dtd,
(uintptr_t)dtd + sizeof(struct imxrt_dtd_s));
up_flush_dcache((uintptr_t)data,
(uintptr_t)data + nbytes);
}
/****************************************************************************
@ -2327,13 +2335,13 @@ static void *imxrt_epallocbuffer(FAR struct usbdev_ep_s *ep, uint16_t bytes)
*/
FAR struct imxrt_ep_s *privep = (FAR struct imxrt_ep_s *)ep;
UNUSED(privep);
usbtrace(TRACE_EPALLOCBUFFER, privep->epphy);
#ifdef CONFIG_USBDEV_DMAMEMORY
return usbdev_dma_alloc(bytes);
#else
return kmm_malloc(bytes);
return cache_aligned_alloc(bytes);
#endif
}
#endif
@ -2350,6 +2358,7 @@ static void *imxrt_epallocbuffer(FAR struct usbdev_ep_s *ep, uint16_t bytes)
static void imxrt_epfreebuffer(FAR struct usbdev_ep_s *ep, FAR void *buf)
{
FAR struct imxrt_ep_s *privep = (FAR struct imxrt_ep_s *)ep;
UNUSED(privep);
usbtrace(TRACE_EPFREEBUFFER, privep->epphy);