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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [include/] [asm-m68knommu/] [m5307dma.h] - Blame information for rev 1765

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#ifndef _M5307_DMA_H
#define _M5307_DMA_H 1
 
 
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/irq.h>
 
 
#define MAX_DMA_CHANNELS 4
 
/*
*DMA Address Definitions
*/
 
 
#define MCF5307_DMA_SAR         (MCF_MBAR+0x300)  /*Source Address Register Channel */
#define MCF5307_DMA_DAR         (MCF_MBAR+0x304)  /*Destination Address Register Channel*/
#define MCF5307_DMA_DCR         (MCF_MBAR+0x308)  /*DMA Controll Register Channel*/
#define MCF5307_DMA_BCR         (MCF_MBAR+0x30C)  /*Byte Count Register Channel*/
#define MCF5307_DMA_SR          (MCF_MBAR+0x310)  /*Status Register Channel*/
#define MCF5307_DMA_IVR         (MCF_MBAR+0x314)  /*InterruptVectorRegister Channel*/
 
/*
*DMA Controll Register Definition
*/
 
 
#define MCF5307_DMA_DCR_INT             (0x8000) /* Interrupt on Completion     */
#define MCF5307_DMA_DCR_EEXT            (0x4000) /* Enable External Request     */
#define MCF5307_DMA_DCR_CS              (0x2000) /* Cycle Steal                 */
#define MCF5307_DMA_DCR_AA              (0x1000) /* Auto Align                  */
#define MCF5307_DMA_DCR_BWC_DMA         (0x0000) /* Bandwidth: DMA Priority     */
#define MCF5307_DMA_DCR_BWC_512         (0x0200) /* Bandwidth:   512 Bytes      */
#define MCF5307_DMA_DCR_BWC_1024        (0x0400) /* Bandwidth:  1024 Bytes      */
#define MCF5307_DMA_DCR_BWC_2048        (0x0600) /* Bandwidth:  2048 Bytes      */
#define MCF5307_DMA_DCR_BWC_4096        (0x0800) /* Bandwidth:  4096 Bytes      */
#define MCF5307_DMA_DCR_BWC_8192        (0x0a00) /* Bandwidth:  8192 Bytes      */
#define MCF5307_DMA_DCR_BWC_16384       (0x0c00) /* Bandwidth: 16384 Bytes      */
#define MCF5307_DMA_DCR_BWC_32768       (0x0e00) /* Bandwidth: 32768 Bytes      */
#define MCF5307_DMA_DCR_SAA             (0x0100) /* Single Address Access       */
#define MCF5307_DMA_DCR_SRW             (0x0080) /* Forces MRW Signal High      */
#define MCF5307_DMA_DCR_SINC            (0x0040) /* Source Increment            */
#define MCF5307_DMA_DCR_SSIZE_LONG      (0x0000) /* Source Size:  Longword      */
#define MCF5307_DMA_DCR_SSIZE_BYTE      (0x0010) /* Source Size:  Byte          */
#define MCF5307_DMA_DCR_SSIZE_WORD      (0x0020) /* Source Size:  Word          */
#define MCF5307_DMA_DCR_SSIZE_LINE      (0x0030) /* Source Size:  Line          */
#define MCF5307_DMA_DCR_DINC            (0x0008) /* Destination Increment       */
#define MCF5307_DMA_DCR_DSIZE_LONG      (0x0000) /* Destination Size:  Longword */
#define MCF5307_DMA_DCR_DSIZE_BYTE      (0x0002) /* Destination Size:  Byte     */
#define MCF5307_DMA_DCR_DSIZE_WORD      (0x0004) /* Destination Size:  Word     */
#define MCF5307_DMA_DCR_DSIZE_LINE      (0x0006) /* Destination Size:  Line          */
#define MCF5307_DMA_DCR_START           (0x0001) /* Start Transfer                      */
 
/*
*DMA Status Register Definitions
*/
 
 
#define MCF5307_DMA_DSR_CE              (0x40)  /* Configuration Error          */
#define MCF5307_DMA_DSR_BES             (0x20)  /* Bus Error on Source          */
#define MCF5307_DMA_DSR_BED             (0x10)  /* Bus Error on Destination     */
#define MCF5307_DMA_DSR_REQ             (0x04)  /* Request                                      */
#define MCF5307_DMA_DSR_BSY             (0x02)  /* Busy                                         */
#define MCF5307_DMA_DSR_DONE            (0x01)  /* Transaction Done                     */          
 
 
#define DMA_STATE_BUSY                  1
#define DMA_STATE_IDLE                  0
#define DMA_STATE_CONFIGURATION_ERROR   -1
#define DMA_STATE_SOURCE_ERROR          -2
#define DMA_STATE_DESTINATION_ERROR     -3
 
struct dma_mcf
{
        const char *devname;
        unsigned char* source;
        unsigned char* dest;
        unsigned short count;
        unsigned short creg;  /*16 bit controllregister use the defines above*/
        void (*handler) (int, void *, struct pt_regs *);
        unsigned int irq_vector;
        unsigned int irq_level;
        unsigned long irq_flags;
};
 
static __inline__ int dma_init(int channel)
{
        int err;
        if ((err = request_dma(channel, 0)) != 0) return err;
 
        *(unsigned char*) (MCF_MBAR + MCFSIM_MPARK) |= 0x80; /* DMA BUS
        MASTER with highest priority*/
        return err;
}
 
 
 
static __inline__ void dma_set(int channel, struct dma_mcf dma)
{
 
 
        *(unsigned int*) (MCF5307_DMA_SAR + (0x40 * channel)) = dma.source;
        *(unsigned int*) (MCF5307_DMA_DAR + (0x40 * channel)) = dma.dest;
        *(unsigned short*) (MCF5307_DMA_BCR + (0x40 * channel)) = dma.count;
        if ((dma.creg & MCF5307_DMA_DCR_INT) !=0)                /* DMA generates a Interrupt on complrtion*/
                {                                       /* Now configure the Interrupt handler*/
                *(unsigned short*) (MCF5307_DMA_IVR + (0x40 * channel)) = dma.irq_vector;
                if (request_irq(dma.irq_vector,dma.handler,dma.irq_flags,
                dma.devname, 0) !=0)
                                printk("request irq fail\n");
 
                *(volatile unsigned char*)(MCF_MBAR + 0x52 + channel) = dma.irq_level | MCFSIM_ICR_AUTOVEC;    /* set MBUS IRQ-Level and autovector */
                mcf_setimr(mcf_getimr() & ~(0x4000 << channel));
                printk("maskreg%X\n",mcf_getimr());
                }
        *(unsigned short*) (MCF5307_DMA_DCR + (0x40 * channel)) = dma.creg;
}
 
 
static __inline__ unsigned char dma_busy(unsigned char channel)
{
        if ((*(unsigned char*) (MCF5307_DMA_SR + (0x40 * channel)) & MCF5307_DMA_DSR_BSY)!=0) return(0x1);
 
        return 0;
}
 
static __inline__ void dma_done(unsigned char channel)
{
 
 
        *(unsigned char*) (MCF5307_DMA_SR + (0x40 * channel)) = MCF5307_DMA_DSR_DONE;
}
 
 
static __inline__ void dma_clear(unsigned char channel)
{
        *(unsigned short*) (MCF5307_DMA_DCR + (0x40 * channel)) = 0x0000;
}
 
 
static __inline__ unsigned char dma_get_status(unsigned char dsr)
{
        if ((dsr & MCF5307_DMA_DSR_CE) != 0) return(DMA_STATE_CONFIGURATION_ERROR);
        if ((dsr & MCF5307_DMA_DSR_BES) !=0) return(DMA_STATE_SOURCE_ERROR);
        if ((dsr & MCF5307_DMA_DSR_BED) !=0) return(DMA_STATE_DESTINATION_ERROR);
        return 0;
}
 
extern int request_dma(unsigned int dmanr, const char * device_id);     /* reserve a DMA channel */
extern void free_dma(unsigned int dmanr);       /* release it again */
#endif /* _M5307_DMA_H */

Line No.	Rev	Author	Line
1	1633	jcastillo	`#ifndef _M5307_DMA_H`
2			`#define _M5307_DMA_H 1`
3
4
5			`#include <asm/coldfire.h>`
6			`#include <asm/mcfsim.h>`
7			`#include <asm/irq.h>`
8
9
10			`#define MAX_DMA_CHANNELS 4`
11
12			`/*`
13			`*DMA Address Definitions`
14			`*/`
15
16
17			`#define MCF5307_DMA_SAR (MCF_MBAR+0x300) /Source Address Register Channel /`
18			`#define MCF5307_DMA_DAR (MCF_MBAR+0x304) /Destination Address Register Channel/`
19			`#define MCF5307_DMA_DCR (MCF_MBAR+0x308) /DMA Controll Register Channel/`
20			`#define MCF5307_DMA_BCR (MCF_MBAR+0x30C) /Byte Count Register Channel/`
21			`#define MCF5307_DMA_SR (MCF_MBAR+0x310) /Status Register Channel/`
22			`#define MCF5307_DMA_IVR (MCF_MBAR+0x314) /InterruptVectorRegister Channel/`
23
24			`/*`
25			`*DMA Controll Register Definition`
26			`*/`
27
28
29			`#define MCF5307_DMA_DCR_INT (0x8000) /* Interrupt on Completion */`
30			`#define MCF5307_DMA_DCR_EEXT (0x4000) /* Enable External Request */`
31			`#define MCF5307_DMA_DCR_CS (0x2000) /* Cycle Steal */`
32			`#define MCF5307_DMA_DCR_AA (0x1000) /* Auto Align */`
33			`#define MCF5307_DMA_DCR_BWC_DMA (0x0000) /* Bandwidth: DMA Priority */`
34			`#define MCF5307_DMA_DCR_BWC_512 (0x0200) /* Bandwidth: 512 Bytes */`
35			`#define MCF5307_DMA_DCR_BWC_1024 (0x0400) /* Bandwidth: 1024 Bytes */`
36			`#define MCF5307_DMA_DCR_BWC_2048 (0x0600) /* Bandwidth: 2048 Bytes */`
37			`#define MCF5307_DMA_DCR_BWC_4096 (0x0800) /* Bandwidth: 4096 Bytes */`
38			`#define MCF5307_DMA_DCR_BWC_8192 (0x0a00) /* Bandwidth: 8192 Bytes */`
39			`#define MCF5307_DMA_DCR_BWC_16384 (0x0c00) /* Bandwidth: 16384 Bytes */`
40			`#define MCF5307_DMA_DCR_BWC_32768 (0x0e00) /* Bandwidth: 32768 Bytes */`
41			`#define MCF5307_DMA_DCR_SAA (0x0100) /* Single Address Access */`
42			`#define MCF5307_DMA_DCR_SRW (0x0080) /* Forces MRW Signal High */`
43			`#define MCF5307_DMA_DCR_SINC (0x0040) /* Source Increment */`
44			`#define MCF5307_DMA_DCR_SSIZE_LONG (0x0000) /* Source Size: Longword */`
45			`#define MCF5307_DMA_DCR_SSIZE_BYTE (0x0010) /* Source Size: Byte */`
46			`#define MCF5307_DMA_DCR_SSIZE_WORD (0x0020) /* Source Size: Word */`
47			`#define MCF5307_DMA_DCR_SSIZE_LINE (0x0030) /* Source Size: Line */`
48			`#define MCF5307_DMA_DCR_DINC (0x0008) /* Destination Increment */`
49			`#define MCF5307_DMA_DCR_DSIZE_LONG (0x0000) /* Destination Size: Longword */`
50			`#define MCF5307_DMA_DCR_DSIZE_BYTE (0x0002) /* Destination Size: Byte */`
51			`#define MCF5307_DMA_DCR_DSIZE_WORD (0x0004) /* Destination Size: Word */`
52			`#define MCF5307_DMA_DCR_DSIZE_LINE (0x0006) /* Destination Size: Line */`
53			`#define MCF5307_DMA_DCR_START (0x0001) /* Start Transfer */`
54
55			`/*`
56			`*DMA Status Register Definitions`
57			`*/`
58
59
60			`#define MCF5307_DMA_DSR_CE (0x40) /* Configuration Error */`
61			`#define MCF5307_DMA_DSR_BES (0x20) /* Bus Error on Source */`
62			`#define MCF5307_DMA_DSR_BED (0x10) /* Bus Error on Destination */`
63			`#define MCF5307_DMA_DSR_REQ (0x04) /* Request */`
64			`#define MCF5307_DMA_DSR_BSY (0x02) /* Busy */`
65			`#define MCF5307_DMA_DSR_DONE (0x01) /* Transaction Done */`
66
67
68			`#define DMA_STATE_BUSY 1`
69			`#define DMA_STATE_IDLE 0`
70			`#define DMA_STATE_CONFIGURATION_ERROR -1`
71			`#define DMA_STATE_SOURCE_ERROR -2`
72			`#define DMA_STATE_DESTINATION_ERROR -3`
73
74			`struct dma_mcf`
75			`{`
76			`const char *devname;`
77			`unsigned char* source;`
78			`unsigned char* dest;`
79			`unsigned short count;`
80			`unsigned short creg; /16 bit controllregister use the defines above/`
81			`void (handler) (int, void , struct pt_regs *);`
82			`unsigned int irq_vector;`
83			`unsigned int irq_level;`
84			`unsigned long irq_flags;`
85			`};`
86
87			`static __inline__ int dma_init(int channel)`
88			`{`
89			`int err;`
90			`if ((err = request_dma(channel, 0)) != 0) return err;`
91
92			`(unsigned char) (MCF_MBAR + MCFSIM_MPARK) \|= 0x80; /* DMA BUS`
93			`MASTER with highest priority*/`
94			`return err;`
95			`}`
96
97
98
99			`static __inline__ void dma_set(int channel, struct dma_mcf dma)`
100			`{`
101
102
103			`(unsigned int) (MCF5307_DMA_SAR + (0x40 * channel)) = dma.source;`
104			`(unsigned int) (MCF5307_DMA_DAR + (0x40 * channel)) = dma.dest;`
105			`(unsigned short) (MCF5307_DMA_BCR + (0x40 * channel)) = dma.count;`
106			`if ((dma.creg & MCF5307_DMA_DCR_INT) !=0) /* DMA generates a Interrupt on complrtion*/`
107			`{ /* Now configure the Interrupt handler*/`
108			`(unsigned short) (MCF5307_DMA_IVR + (0x40 * channel)) = dma.irq_vector;`
109			`if (request_irq(dma.irq_vector,dma.handler,dma.irq_flags,`
110			`dma.devname, 0) !=0)`
111			`printk("request irq fail\n");`
112
113			`(volatile unsigned char)(MCF_MBAR + 0x52 + channel) = dma.irq_level \| MCFSIM_ICR_AUTOVEC; /* set MBUS IRQ-Level and autovector */`
114			`mcf_setimr(mcf_getimr() & ~(0x4000 << channel));`
115			`printk("maskreg%X\n",mcf_getimr());`
116			`}`
117			`(unsigned short) (MCF5307_DMA_DCR + (0x40 * channel)) = dma.creg;`
118			`}`
119
120
121			`static __inline__ unsigned char dma_busy(unsigned char channel)`
122			`{`
123			`if (((unsigned char) (MCF5307_DMA_SR + (0x40 * channel)) & MCF5307_DMA_DSR_BSY)!=0) return(0x1);`
124
125			`return 0;`
126			`}`
127
128			`static __inline__ void dma_done(unsigned char channel)`
129			`{`
130
131
132			`(unsigned char) (MCF5307_DMA_SR + (0x40 * channel)) = MCF5307_DMA_DSR_DONE;`
133			`}`
134
135
136			`static __inline__ void dma_clear(unsigned char channel)`
137			`{`
138			`(unsigned short) (MCF5307_DMA_DCR + (0x40 * channel)) = 0x0000;`
139			`}`
140
141
142			`static __inline__ unsigned char dma_get_status(unsigned char dsr)`
143			`{`
144			`if ((dsr & MCF5307_DMA_DSR_CE) != 0) return(DMA_STATE_CONFIGURATION_ERROR);`
145			`if ((dsr & MCF5307_DMA_DSR_BES) !=0) return(DMA_STATE_SOURCE_ERROR);`
146			`if ((dsr & MCF5307_DMA_DSR_BED) !=0) return(DMA_STATE_DESTINATION_ERROR);`
147			`return 0;`
148			`}`
149
150			`extern int request_dma(unsigned int dmanr, const char * device_id); /* reserve a DMA channel */`
151			`extern void free_dma(unsigned int dmanr); /* release it again */`
152			`#endif /* _M5307_DMA_H */`

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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [include/] [asm-m68knommu/] [m5307dma.h] - Blame information for rev 1765