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authorPeter Tyser <ptyser@xes-inc.com>2009-06-30 17:15:51 -0500
committerKumar Gala <galak@kernel.crashing.org>2009-07-02 11:15:57 -0500
commite94e460c6e8741f42dab6d8dd4b596ba5d9d79ae (patch)
tree35d8c3f5a8070fe16cffb4d4212fe469a2d8a69b /cpu/mpc83xx/cpu.c
parent9adda5459ca62120c0c50b82b766fe1cf6925bbf (diff)
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83xx: Add support for fsl_dma driver
Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Reviewed-by: Ira W. Snyder <iws@ovro.caltech.edu> Tested-by: Ira W. Snyder <iws@ovro.caltech.edu> Acked-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'cpu/mpc83xx/cpu.c')
-rw-r--r--cpu/mpc83xx/cpu.c85
1 files changed, 0 insertions, 85 deletions
diff --git a/cpu/mpc83xx/cpu.c b/cpu/mpc83xx/cpu.c
index a5c1f00..e38a372 100644
--- a/cpu/mpc83xx/cpu.c
+++ b/cpu/mpc83xx/cpu.c
@@ -276,91 +276,6 @@ void watchdog_reset (void)
}
#endif
-#if defined(CONFIG_DDR_ECC)
-void dma_init(void)
-{
- volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
- volatile dma83xx_t *dma = &immap->dma;
- volatile u32 status = swab32(dma->dmasr0);
- volatile u32 dmamr0 = swab32(dma->dmamr0);
-
- debug("DMA-init\n");
-
- /* initialize DMASARn, DMADAR and DMAABCRn */
- dma->dmadar0 = (u32)0;
- dma->dmasar0 = (u32)0;
- dma->dmabcr0 = 0;
-
- __asm__ __volatile__ ("sync");
- __asm__ __volatile__ ("isync");
-
- /* clear CS bit */
- dmamr0 &= ~DMA_CHANNEL_START;
- dma->dmamr0 = swab32(dmamr0);
- __asm__ __volatile__ ("sync");
- __asm__ __volatile__ ("isync");
-
- /* while the channel is busy, spin */
- while(status & DMA_CHANNEL_BUSY) {
- status = swab32(dma->dmasr0);
- }
-
- debug("DMA-init end\n");
-}
-
-uint dma_check(void)
-{
- volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
- volatile dma83xx_t *dma = &immap->dma;
- volatile u32 status = swab32(dma->dmasr0);
- volatile u32 byte_count = swab32(dma->dmabcr0);
-
- /* while the channel is busy, spin */
- while (status & DMA_CHANNEL_BUSY) {
- status = swab32(dma->dmasr0);
- }
-
- if (status & DMA_CHANNEL_TRANSFER_ERROR) {
- printf ("DMA Error: status = %x @ %d\n", status, byte_count);
- }
-
- return status;
-}
-
-int dmacpy(phys_addr_t dest, phys_addr_t src, phys_size_t count)
-{
- volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
- volatile dma83xx_t *dma = &immap->dma;
- volatile u32 dmamr0;
-
- /* initialize DMASARn, DMADAR and DMAABCRn */
- dma->dmadar0 = swab32((u32)dest);
- dma->dmasar0 = swab32((u32)src);
- dma->dmabcr0 = swab32((u32)count);
-
- __asm__ __volatile__ ("sync");
- __asm__ __volatile__ ("isync");
-
- /* init direct transfer, clear CS bit */
- dmamr0 = (DMA_CHANNEL_TRANSFER_MODE_DIRECT |
- DMA_CHANNEL_SOURCE_ADDRESS_HOLD_8B |
- DMA_CHANNEL_SOURCE_ADRESSS_HOLD_EN);
-
- dma->dmamr0 = swab32(dmamr0);
-
- __asm__ __volatile__ ("sync");
- __asm__ __volatile__ ("isync");
-
- /* set CS to start DMA transfer */
- dmamr0 |= DMA_CHANNEL_START;
- dma->dmamr0 = swab32(dmamr0);
- __asm__ __volatile__ ("sync");
- __asm__ __volatile__ ("isync");
-
- return ((int)dma_check());
-}
-#endif /*CONFIG_DDR_ECC*/
-
/*
* Initializes on-chip ethernet controllers.
* to override, implement board_eth_init()