brain-hackers_pepepper-mirror/u-boot-brain
1
0
Fork 0
mirror of https://github.com/brain-hackers/u-boot-brain synced 2024-10-03 10:00:42 +09:00
Code Issues Projects Releases Wiki Activity

dwc2: Add dcache support

Browse Source 
This adds dcache support for dwc2. The DMA buffers must be DMA aligned and
is flushed for outgoing transactions before starting transfer. For
ingoing transactions it is invalidated after the transfer has finished.

Signed-off-by: Alexander Stein <alexanders83@web.de>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
[trini: Update to apply again on top of DM patches]
Signed-off-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Alexander Stein 2015-07-24 09:22:14 +02:00 committed by Tom Rini
parent 4342557fad
commit db402e005a
1 changed files with 17 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/usb/host/dwc2.c
View File

@ -27,8 +27,8 @@
struct dwc2_priv {
#ifdef CONFIG_DM_USB
uint8_t aligned_buffer[DWC2_DATA_BUF_SIZE] __aligned(8);
uint8_t status_buffer[DWC2_STATUS_BUF_SIZE] __aligned(8);
uint8_t aligned_buffer[DWC2_DATA_BUF_SIZE] __aligned(ARCH_DMA_MINALIGN);
uint8_t status_buffer[DWC2_STATUS_BUF_SIZE] __aligned(ARCH_DMA_MINALIGN);
#else
uint8_t *aligned_buffer;
uint8_t *status_buffer;
@ -39,9 +39,11 @@ struct dwc2_priv {
};
#ifndef CONFIG_DM_USB
/* We need doubleword-aligned buffers for DMA transfers */
DEFINE_ALIGN_BUFFER(uint8_t, aligned_buffer_addr, DWC2_DATA_BUF_SIZE, 8);
DEFINE_ALIGN_BUFFER(uint8_t, status_buffer_addr, DWC2_STATUS_BUF_SIZE, 8);
/* We need cacheline-aligned buffers for DMA transfers and dcache support */
DEFINE_ALIGN_BUFFER(uint8_t, aligned_buffer_addr, DWC2_DATA_BUF_SIZE,
ARCH_DMA_MINALIGN);
DEFINE_ALIGN_BUFFER(uint8_t, status_buffer_addr, DWC2_STATUS_BUF_SIZE,
ARCH_DMA_MINALIGN);
static struct dwc2_priv local;
#endif
@ -821,8 +823,11 @@ int chunk_msg(struct dwc2_priv *priv, struct usb_device *dev,
&hc_regs->hctsiz);
if (!in) {
memcpy(priv->aligned_buffer, (char *)buffer + done,
len);
memcpy(priv->aligned_buffer, (char *)buffer + done, len);
flush_dcache_range((unsigned long)priv->aligned_buffer,
(unsigned long)((void *)priv->aligned_buffer +
roundup(len, ARCH_DMA_MINALIGN)));
}
writel(phys_to_bus((unsigned long)priv->aligned_buffer),
@ -840,6 +845,11 @@ int chunk_msg(struct dwc2_priv *priv, struct usb_device *dev,
if (in) {
xfer_len -= sub;
invalidate_dcache_range((unsigned long)priv->aligned_buffer,
(unsigned long)((void *)priv->aligned_buffer +
roundup(xfer_len, ARCH_DMA_MINALIGN)));
memcpy(buffer + done, priv->aligned_buffer, xfer_len);
if (sub)
stop_transfer = 1;