Gigabeat S: Implement MDMA and UDMA disk access for bootloader and main binary. Add a needed SDMA API to check channel errors. Increase audio DMA channels' priority as required. Reads and writes measure faster accross all test_disk tests and especially at 4KB and 1MB.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20299 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 8 insertions, 0 deletions

diff --git a/firmware/target/arm/imx31/sdma-imx31.c b/firmware/target/arm/imx31/sdma-imx31.c
index d1611d6332..4c5674afb9 100644
--- a/firmware/target/arm/imx31/sdma-imx31.c
+++ b/firmware/target/arm/imx31/sdma-imx31.c
@@ -468,6 +468,8 @@ static bool setup_channel(struct channel_control_block *ccb_p)
                      CHANNEL_CONTEXT_ADDR(channel),
                      sizeof (context_buffer)/4);
 
+    ccb_p->status.error = 0; /* Clear channel-wide error flag */
+
     if (cd_p->is_setup != 0)
         return true; /* No more to do */
 
@@ -759,6 +761,12 @@ void sdma_channel_close(unsigned int channel)
     memset(ccb_p, 0x00, sizeof (struct channel_control_block));
 }
 
+/* Check channel-wide error flag */
+bool sdma_channel_is_error(unsigned int channel)
+{
+    return channel < CH_NUM && ccb_array[channel].status.error;
+}
+
 /* Write 32-bit words to SDMA core memory. Host endian->SDMA endian. */
 void sdma_write_words(const unsigned long *buf, unsigned long start, int count)
 {