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fsl_dma: Add bitfield definitions for common registers

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Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Peter Tyser 2009-06-30 17:15:41 -05:00 committed by Kumar Gala
parent 017f11f68e
commit 9c06071a60
2 changed files with 52 additions and 6 deletions
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12
drivers/dma/fsl_dma.c
View File

@ -51,11 +51,11 @@ static uint dma_check(void) {
volatile uint status = dma->sr;
/* While the channel is busy, spin */
while (status & 4)
while (status & FSL_DMA_SR_CB)
status = dma->sr;
/* clear MR[CS] channel start bit */
dma->mr &= 1;
dma->mr &= FSL_DMA_MR_CS;
dma_sync();
if (status != 0)
@ -67,8 +67,8 @@ static uint dma_check(void) {
void dma_init(void) {
volatile fsl_dma_t *dma = &dma_base->dma[0];
dma->satr = 0x00040000;
dma->datr = 0x00040000;
dma->satr = FSL_DMA_SATR_SREAD_NO_SNOOP;
dma->datr = FSL_DMA_DATR_DWRITE_NO_SNOOP;
dma->sr = 0xffffffff; /* clear any errors */
dma_sync();
}
@ -81,11 +81,11 @@ int dma_xfer(void *dest, uint count, void *src) {
dma->bcr = count;
/* Disable bandwidth control, use direct transfer mode */
dma->mr = 0xf000004;
dma->mr = FSL_DMA_MR_BWC_DIS | FSL_DMA_MR_CTM_DIRECT;
dma_sync();
/* Start the transfer */
dma->mr = 0xf000005;
dma->mr = FSL_DMA_MR_BWC_DIS | FSL_DMA_MR_CTM_DIRECT | FSL_DMA_MR_CS;
dma_sync();
return dma_check();

46
include/asm-ppc/fsl_dma.h
View File

@ -29,12 +29,58 @@
typedef struct fsl_dma {
uint mr; /* DMA mode register */
#define FSL_DMA_MR_CS 0x00000001 /* Channel start */
#define FSL_DMA_MR_CC 0x00000002 /* Channel continue */
#define FSL_DMA_MR_CTM 0x00000004 /* Channel xfer mode */
#define FSL_DMA_MR_CTM_DIRECT 0x00000004 /* Direct channel xfer mode */
#define FSL_DMA_MR_CA 0x00000008 /* Channel abort */
#define FSL_DMA_MR_CDSM 0x00000010
#define FSL_DMA_MR_XFE 0x00000020 /* Extended features en */
#define FSL_DMA_MR_EIE 0x00000040 /* Error interrupt en */
#define FSL_DMA_MR_EOLSIE 0x00000080 /* End-of-lists interrupt en */
#define FSL_DMA_MR_EOLNIE 0x00000100 /* End-of-links interrupt en */
#define FSL_DMA_MR_EOSIE 0x00000200 /* End-of-seg interrupt en */
#define FSL_DMA_MR_SRW 0x00000400 /* Single register write */
#define FSL_DMA_MR_SAHE 0x00001000 /* Source addr hold enable */
#define FSL_DMA_MR_DAHE 0x00002000 /* Dest addr hold enable */
#define FSL_DMA_MR_SAHTS_MASK 0x0000c000 /* Source addr hold xfer size */
#define FSL_DMA_MR_DAHTS_MASK 0x00030000 /* Dest addr hold xfer size */
#define FSL_DMA_MR_EMS_EN 0x00040000 /* Ext master start en */
#define FSL_DMA_MR_EMP_EN 0x00200000 /* Ext master pause en */
#define FSL_DMA_MR_BWC_MASK 0x0f000000 /* Bandwidth/pause ctl */
#define FSL_DMA_MR_BWC_DIS 0x0f000000 /* Bandwidth/pause ctl disable */
uint sr; /* DMA status register */
#define FSL_DMA_SR_EOLSI 0x00000001 /* End-of-list interrupt */
#define FSL_DMA_SR_EOSI 0x00000002 /* End-of-segment interrupt */
#define FSL_DMA_SR_CB 0x00000004 /* Channel busy */
#define FSL_DMA_SR_EOLNI 0x00000008 /* End-of-links interrupt */
#define FSL_DMA_SR_PE 0x00000010 /* Programming error */
#define FSL_DMA_SR_CH 0x00000020 /* Channel halted */
#define FSL_DMA_SR_TE 0x00000080 /* Transfer error */
char res0[4];
uint clndar; /* DMA current link descriptor address register */
uint satr; /* DMA source attributes register */
#define FSL_DMA_SATR_ESAD_MASK 0x000001ff /* Extended source addr */
#define FSL_DMA_SATR_SREAD_NO_SNOOP 0x00040000 /* Read, don't snoop */
#define FSL_DMA_SATR_SREAD_SNOOP 0x00050000 /* Read, snoop */
#define FSL_DMA_SATR_SREAD_UNLOCK 0x00070000 /* Read, unlock l2 */
#define FSL_DMA_SATR_STRAN_MASK 0x00f00000 /* Source interface */
#define FSL_DMA_SATR_SSME 0x01000000 /* Source stride en */
#define FSL_DMA_SATR_SPCIORDER 0x02000000 /* PCI transaction order */
#define FSL_DMA_SATR_STFLOWLVL_MASK 0x0c000000 /* RIO flow level */
#define FSL_DMA_SATR_SBPATRMU 0x20000000 /* Bypass ATMU */
uint sar; /* DMA source address register */
uint datr; /* DMA destination attributes register */
#define FSL_DMA_DATR_EDAD_MASK 0x000001ff /* Extended dest addr */
#define FSL_DMA_DATR_DWRITE_NO_SNOOP 0x00040000 /* Write, don't snoop */
#define FSL_DMA_DATR_DWRITE_SNOOP 0x00050000 /* Write, snoop */
#define FSL_DMA_DATR_DWRITE_ALLOC 0x00060000 /* Write, alloc l2 */
#define FSL_DMA_DATR_DWRITE_LOCK 0x00070000 /* Write, lock l2 */
#define FSL_DMA_DATR_DTRAN_MASK 0x00f00000 /* Dest interface */
#define FSL_DMA_DATR_DSME 0x01000000 /* Dest stride en */
#define FSL_DMA_DATR_DPCIORDER 0x02000000 /* PCI transaction order */
#define FSL_DMA_DATR_DTFLOWLVL_MASK 0x0c000000 /* RIO flow level */
#define FSL_DMA_DATR_DBPATRMU 0x20000000 /* Bypass ATMU */
uint dar; /* DMA destination address register */
uint bcr; /* DMA byte count register */
char res1[4];