len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-12-09 13:15:18 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

mips: Heavily rework DMA & caching code

Browse source 
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
Download patch file Download diff file Expand all files Collapse all files

8
firmware/target/mips/ingenic_jz47xx/ata-sd-jz4760.c
View file

@ -532,6 +532,9 @@ static int jz_sd_transmit_data(const int drive, struct sd_request *req)
#if SD_DMA_ENABLE
static int jz_sd_receive_data_dma(const int drive, struct sd_request *req)
{
/* flush dcache */
discard_dcache_range(req->buffer, req->cnt);
/* setup dma channel */
REG_DMAC_DCCSR(DMA_SD_RX_CHANNEL(drive)) = 0;
REG_DMAC_DSAR(DMA_SD_RX_CHANNEL(drive)) = PHYSADDR(MSC_RXFIFO(MSC_CHN(drive))); /* DMA source addr */
@ -558,16 +561,13 @@ static int jz_sd_receive_data_dma(const int drive, struct sd_request *req)
/* clear status and disable channel */
REG_DMAC_DCCSR(DMA_SD_RX_CHANNEL(drive)) = 0;
/* flush dcache */
dma_cache_wback_inv((unsigned long) req->buffer, req->cnt);
return SD_NO_ERROR;
}
static int jz_sd_transmit_data_dma(const int drive, struct sd_request *req)
{
/* flush dcache */
dma_cache_wback_inv((unsigned long) req->buffer, req->cnt);
commit_discard_dcache_range(req->buffer, req->cnt);
/* setup dma channel */
REG_DMAC_DCCSR(DMA_SD_TX_CHANNEL(drive)) = 0;