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mips: Heavily rework DMA & caching code

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Based on code originally written by Amaury Pouly (g#1789, g#1791, g#1527)
but rebased and heavily updated.

Change-Id: Ic794abb5e8d89feb4b88fc3abe854270fb28db70
This commit is contained in:
Solomon Peachy 2020-08-28 21:45:58 -04:00
parent 1ae8213a64
commit 0cb162a76b
16 changed files with 188 additions and 129 deletions
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10
firmware/target/mips/ingenic_jz47xx/usb-jz4760.c
View file

@ -360,7 +360,7 @@ static void EPIN_handler(unsigned int endpoint)
}
logf("EP%d: %d -> %d", endpoint, ep->sent, ep->length);
if(ep->sent == 0)
length = MIN(ep->length, ep->fifo_size);
else
@ -456,7 +456,7 @@ static void EPDMA_handler(int number)
/* Disable DMA */
REG_USB_CNTL(1) = 0;
__dcache_invalidate_all();
commit_discard_dcache(); // XXX range?
select_endpoint(endpoint);
/* Read out last packet manually */
@ -846,8 +846,7 @@ static void usb_drv_send_internal(struct usb_endpoint* ep, void* ptr, int length
{
if(ep->use_dma)
{
//dma_cache_wback_inv((unsigned long)ptr, length);
__dcache_writeback_all();
commit_discard_dcache_range(ptr, length);
REG_USB_ADDR(0) = PHYSADDR((unsigned long)ptr);
REG_USB_COUNT(0) = length;
REG_USB_CNTL(0) = (USB_CNTL_INTR_EN | USB_CNTL_MODE_1 |
@ -921,8 +920,7 @@ int usb_drv_recv(int endpoint, void* ptr, int length)
ep->busy = true;
if(ep->use_dma)
{
//dma_cache_wback_inv((unsigned long)ptr, length);
__dcache_writeback_all();
discard_dcache_range(ptr, length);
REG_USB_ADDR(1) = PHYSADDR((unsigned long)ptr);
REG_USB_COUNT(1) = length;
REG_USB_CNTL(1) = (USB_CNTL_INTR_EN | USB_CNTL_MODE_1 |