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>

2 files changed, 4 insertions, 121 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()
diff --git a/cpu/mpc83xx/spd_sdram.c b/cpu/mpc83xx/spd_sdram.c
index 8243968..0f61180 100644
--- a/cpu/mpc83xx/spd_sdram.c
+++ b/cpu/mpc83xx/spd_sdram.c
@@ -64,13 +64,6 @@ void board_add_ram_info(int use_default)
 }
 
 #ifdef CONFIG_SPD_EEPROM
-
-#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRC)
-extern void dma_init(void);
-extern uint dma_check(void);
-extern int dmacpy(phys_addr_t dest, phys_addr_t src, phys_size_t n);
-#endif
-
 #ifndef	CONFIG_SYS_READ_SPD
 #define CONFIG_SYS_READ_SPD	i2c_read
 #endif
@@ -863,7 +856,6 @@ static __inline__ unsigned long get_tbms (void)
 /*
  * Initialize all of memory for ECC, then enable errors.
  */
-/* #define CONFIG_DDR_ECC_INIT_VIA_DMA */
 void ddr_enable_ecc(unsigned int dram_size)
 {
 	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
@@ -872,45 +864,21 @@ void ddr_enable_ecc(unsigned int dram_size)
 	register u64 *p;
 	register uint size;
 	unsigned int pattern[2];
-#if defined(CONFIG_DDR_ECC_INIT_VIA_DMA)
-	uint i;
-#endif
+
 	icache_enable();
 	t_start = get_tbms();
 	pattern[0] = 0xdeadbeef;
 	pattern[1] = 0xdeadbeef;
 
-#if !defined(CONFIG_DDR_ECC_INIT_VIA_DMA)
+#if defined(CONFIG_DDR_ECC_INIT_VIA_DMA)
+	dma_meminit(pattern[0], dram_size);
+#else
 	debug("ddr init: CPU FP write method\n");
 	size = dram_size;
 	for (p = 0; p < (u64*)(size); p++) {
 		ppcDWstore((u32*)p, pattern);
 	}
 	__asm__ __volatile__ ("sync");
-#else
-	debug("ddr init: DMA method\n");
-	size = 0x2000;
-	for (p = 0; p < (u64*)(size); p++) {
-		ppcDWstore((u32*)p, pattern);
-	}
-	__asm__ __volatile__ ("sync");
-
-	/* Initialise DMA for direct transfer */
-	dma_init();
-	/* Start DMA to transfer */
-	dmacpy(0x2000, 0, 0x2000); /* 8K */
-	dmacpy(0x4000, 0, 0x4000); /* 16K */
-	dmacpy(0x8000, 0, 0x8000); /* 32K */
-	dmacpy(0x10000, 0, 0x10000); /* 64K */
-	dmacpy(0x20000, 0, 0x20000); /* 128K */
-	dmacpy(0x40000, 0, 0x40000); /* 256K */
-	dmacpy(0x80000, 0, 0x80000); /* 512K */
-	dmacpy(0x100000, 0, 0x100000); /* 1M */
-	dmacpy(0x200000, 0, 0x200000); /* 2M */
-	dmacpy(0x400000, 0, 0x400000); /* 4M */
-
-	for (i = 1; i < dram_size / 0x800000; i++)
-		dmacpy(0x800000 * i, 0, 0x800000);
 #endif
 
 	t_end = get_tbms();