DMA support is now enabled via the CONFIG_FSL_DMA define instead of the previous CONFIG_DDR_ECC
Signed-off-by: Peter Tyser ptyser@xes-inc.com --- cpu/mpc85xx/cpu.c | 47 ------------------------ cpu/mpc86xx/cpu.c | 55 ---------------------------- drivers/dma/Makefile | 1 + drivers/dma/fsl_dma.c | 92 +++++++++++++++++++++++++++++++++++++++++++++++ include/configs/PM854.h | 1 + include/configs/PM856.h | 1 + 6 files changed, 95 insertions(+), 102 deletions(-) create mode 100644 drivers/dma/fsl_dma.c
diff --git a/cpu/mpc85xx/cpu.c b/cpu/mpc85xx/cpu.c index 86b19a6..416ea08 100644 --- a/cpu/mpc85xx/cpu.c +++ b/cpu/mpc85xx/cpu.c @@ -258,53 +258,6 @@ reset_85xx_watchdog(void) } #endif /* CONFIG_WATCHDOG */
-#if defined(CONFIG_DDR_ECC) -void dma_init(void) { - volatile ccsr_dma_t *dma_base = (void *)(CONFIG_SYS_MPC85xx_DMA_ADDR); - volatile fsl_dma_t *dma = &dma_base->dma[0]; - - dma->satr = 0x00040000; - dma->datr = 0x00040000; - dma->sr = 0xffffffff; /* clear any errors */ - asm("sync; isync; msync"); - return; -} - -uint dma_check(void) { - volatile ccsr_dma_t *dma_base = (void *)(CONFIG_SYS_MPC85xx_DMA_ADDR); - volatile fsl_dma_t *dma = &dma_base->dma[0]; - volatile uint status = dma->sr; - - /* While the channel is busy, spin */ - while((status & 4) == 4) { - status = dma->sr; - } - - /* clear MR[CS] channel start bit */ - dma->mr &= 0x00000001; - asm("sync;isync;msync"); - - if (status != 0) { - printf ("DMA Error: status = %x\n", status); - } - return status; -} - -int dma_xfer(void *dest, uint count, void *src) { - volatile ccsr_dma_t *dma_base = (void *)(CONFIG_SYS_MPC85xx_DMA_ADDR); - volatile fsl_dma_t *dma = &dma_base->dma[0]; - - dma->dar = (uint) dest; - dma->sar = (uint) src; - dma->bcr = count; - dma->mr = 0xf000004; - asm("sync;isync;msync"); - dma->mr = 0xf000005; - asm("sync;isync;msync"); - return dma_check(); -} -#endif - /* * Configures a UPM. The function requires the respective MxMR to be set * before calling this function. "size" is the number or entries, not a sizeof. diff --git a/cpu/mpc86xx/cpu.c b/cpu/mpc86xx/cpu.c index d47cc5e..1f26ba1 100644 --- a/cpu/mpc86xx/cpu.c +++ b/cpu/mpc86xx/cpu.c @@ -177,61 +177,6 @@ watchdog_reset(void) } #endif /* CONFIG_WATCHDOG */
- -#if defined(CONFIG_DDR_ECC) -void -dma_init(void) -{ - volatile ccsr_dma_t *dma_base = (void *)(CONFIG_SYS_MPC86xx_DMA_ADDR); - volatile fsl_dma_t *dma = &dma_base->dma[0]; - - dma->satr = 0x00040000; - dma->datr = 0x00040000; - dma->sr = 0xffffffff; /* clear any errors */ - asm("sync; isync"); -} - -uint -dma_check(void) -{ - volatile ccsr_dma_t *dma_base = (void *)(CONFIG_SYS_MPC86xx_DMA_ADDR); - volatile fsl_dma_t *dma = &dma_base->dma[0]; - volatile uint status = dma->sr; - - /* While the channel is busy, spin */ - while ((status & 4) == 4) { - status = dma->sr; - } - - /* clear MR[CS] channel start bit */ - dma->mr &= 0x00000001; - asm("sync;isync"); - - if (status != 0) { - printf("DMA Error: status = %x\n", status); - } - return status; -} - -int -dma_xfer(void *dest, uint count, void *src) -{ - volatile ccsr_dma_t *dma_base = (void *)(CONFIG_SYS_MPC86xx_DMA_ADDR); - volatile fsl_dma_t *dma = &dma_base->dma[0]; - - dma->dar = (uint) dest; - dma->sar = (uint) src; - dma->bcr = count; - dma->mr = 0xf000004; - asm("sync;isync"); - dma->mr = 0xf000005; - asm("sync;isync"); - return dma_check(); -} - -#endif /* CONFIG_DDR_ECC */ - - /* * Print out the state of various machine registers. * Currently prints out LAWs, BR0/OR0, and BATs diff --git a/drivers/dma/Makefile b/drivers/dma/Makefile index cf29efa..36d99f9 100644 --- a/drivers/dma/Makefile +++ b/drivers/dma/Makefile @@ -26,6 +26,7 @@ include $(TOPDIR)/config.mk LIB := $(obj)libdma.a
COBJS-$(CONFIG_FSLDMAFEC) += MCD_tasksInit.o MCD_dmaApi.o MCD_tasks.o +COBJS-$(CONFIG_FSL_DMA) += fsl_dma.o
COBJS := $(COBJS-y) SRCS := $(COBJS:.o=.c) diff --git a/drivers/dma/fsl_dma.c b/drivers/dma/fsl_dma.c new file mode 100644 index 0000000..a9989ee --- /dev/null +++ b/drivers/dma/fsl_dma.c @@ -0,0 +1,92 @@ +/* + * Copyright 2004,2007,2008 Freescale Semiconductor, Inc. + * (C) Copyright 2002, 2003 Motorola Inc. + * Xianghua Xiao (X.Xiao@motorola.com) + * + * (C) Copyright 2000 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <config.h> +#include <common.h> +#include <asm/fsl_dma.h> + +#if defined(CONFIG_MPC85xx) +volatile ccsr_dma_t *dma_base = (void *)(CONFIG_SYS_MPC85xx_DMA_ADDR); +#elif defined(CONFIG_MPC86xx) +volatile ccsr_dma_t *dma_base = (void *)(CONFIG_SYS_MPC86xx_DMA_ADDR); +#else +#error "Freescale DMA engine not supported on your processor" +#endif + +static void dma_sync(void) +{ +#if defined(CONFIG_MPC85xx) + asm("sync; isync; msync"); +#elif defined(CONFIG_MPC86xx) + asm("sync; isync"); +#endif +} + +static uint dma_check(void) { + volatile fsl_dma_t *dma = &dma_base->dma[0]; + volatile uint status = dma->sr; + + /* While the channel is busy, spin */ + while (status & 4) + status = dma->sr; + + /* clear MR[CS] channel start bit */ + dma->mr &= 1; + dma_sync(); + + if (status != 0) + printf ("DMA Error: status = %x\n", status); + + return status; +} + +void dma_init(void) { + volatile fsl_dma_t *dma = &dma_base->dma[0]; + + dma->satr = 0x00040000; + dma->datr = 0x00040000; + dma->sr = 0xffffffff; /* clear any errors */ + dma_sync(); +} + +int dma_xfer(void *dest, uint count, void *src) { + volatile fsl_dma_t *dma = &dma_base->dma[0]; + + dma->dar = (uint) dest; + dma->sar = (uint) src; + dma->bcr = count; + + /* Disable bandwidth control, use direct transfer mode */ + dma->mr = 0xf000004; + dma_sync(); + + /* Start the transfer */ + dma->mr = 0xf000005; + dma_sync(); + + return dma_check(); +} diff --git a/include/configs/PM854.h b/include/configs/PM854.h index 3f943aa..4b9bcca 100644 --- a/include/configs/PM854.h +++ b/include/configs/PM854.h @@ -96,6 +96,7 @@ #undef CONFIG_DDR_SPD #define CONFIG_DDR_DLL /* possible DLL fix needed */ #define CONFIG_DDR_ECC /* only for ECC DDR module */ +#define CONFIG_FSL_DMA /* use DMA to init DDR ECC */
#define CONFIG_MEM_INIT_VALUE 0xDeadBeef
diff --git a/include/configs/PM856.h b/include/configs/PM856.h index 43c2873..1db20bc 100644 --- a/include/configs/PM856.h +++ b/include/configs/PM856.h @@ -98,6 +98,7 @@ #undef CONFIG_DDR_SPD #define CONFIG_DDR_DLL /* possible DLL fix needed */ #define CONFIG_DDR_ECC /* only for ECC DDR module */ +#define CONFIG_FSL_DMA /* use DMA to init DDR ECC */
#define CONFIG_MEM_INIT_VALUE 0xDeadBeef