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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [arch/] [armnommu/] [drivers/] [scsi/] [acornscsi-io.S] - Blame information for rev 1765

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@  linux/arch/arm/drivers/scsi/acornscsi-io.S: Acorn SCSI card IO
 
#include 
#include 
 
#if (IO_BASE == (PCIO_BASE & 0xff000000))
#define ADDR(off,reg)                                           \
                tst     off, $0x80000000                        ;\
                mov     reg, $IO_BASE                           ;\
                orreq   reg, reg, $(PCIO_BASE & 0x00ff0000)
#else
#define ADDR(off,reg)                                           \
                tst     off, $0x80000000                        ;\
                movne   reg, $IO_BASE                           ;\
                moveq   reg, $(PCIO_BASE & 0xff000000)		;\
                orreq   reg, reg, $(PCIO_BASE & 0x00ff0000)
#endif
 
@ Purpose: transfer a block of data from the acorn scsi card to memory
@ Proto  : void acornscsi_in(unsigned int addr_start, char *buffer, int length)
@ Returns: nothing
 
                .align
                .global ___acornscsi_in
___acornscsi_in:
                stmfd   sp!, {r4 - r7, lr}
                bic     r0, r0, #3
                mov     lr, #0xff
                orr     lr, lr, #0xff00
acornscsi_in16lp:
                subs    r2, r2, #16
                bmi     acornscsi_in8
                ldmia   r0!, {r3, r4, r5, r6}
                and     r3, r3, lr
                orr     r3, r3, r4, lsl #16
                and     r4, r5, lr
                orr     r4, r4, r6, lsl #16
                ldmia   r0!, {r5, r6, r7, ip}
                and     r5, r5, lr
                orr     r5, r5, r6, lsl #16
                and     r6, r7, lr
                orr     r6, r6, ip, lsl #16
                stmia   r1!, {r3 - r6}
                bne     acornscsi_in16lp
                LOADREGS(fd, sp!, {r4 - r7, pc})
 
acornscsi_in8:  adds    r2, r2, #8
                bmi     acornscsi_in4
                ldmia   r0!, {r3, r4, r5, r6}
                and     r3, r3, lr
                orr     r3, r3, r4, lsl #16
                and     r4, r5, lr
                orr     r4, r4, r6, lsl #16
                stmia   r1!, {r3 - r4}
                LOADREGS(eqfd, sp!, {r4 - r7, pc})
                sub     r2, r2, #8
 
acornscsi_in4:  adds    r2, r2, #4
                bmi     acornscsi_in2
                ldmia   r0!, {r3, r4}
                and     r3, r3, lr
                orr     r3, r3, r4, lsl #16
                str     r3, [r1], #4
                LOADREGS(eqfd, sp!, {r4 - r7, pc})
                sub     r2, r2, #4
 
acornscsi_in2:  adds    r2, r2, #2
                ldr     r3, [r0], #4
                and     r3, r3, lr
                strb    r3, [r1], #1
                mov     r3, r3, lsr #8
                strplb  r3, [r1], #1
                LOADREGS(fd, sp!, {r4 - r7, pc})
 
@ Purpose: transfer a block of data from memory to the acorn scsi card
@ Proto  : void acornscsi_in(unsigned int addr_start, char *buffer, int length)
@ Returns: nothing
 
                .global ___acornscsi_out
___acornscsi_out:
                stmfd   sp!, {r4 - r6, lr}
                bic     r0, r0, #3
acornscsi_out16lp:
                subs    r2, r2, #16
                bmi     acornscsi_out8
                ldmia   r1!, {r4, r6, ip, lr}
                mov     r3, r4, lsl #16
                orr     r3, r3, r3, lsr #16
                mov     r4, r4, lsr #16
                orr     r4, r4, r4, lsl #16
                mov     r5, r6, lsl #16
                orr     r5, r5, r5, lsr #16
                mov     r6, r6, lsr #16
                orr     r6, r6, r6, lsl #16
                stmia   r0!, {r3, r4, r5, r6}
                mov     r3, ip, lsl #16
                orr     r3, r3, r3, lsr #16
                mov     r4, ip, lsr #16
                orr     r4, r4, r4, lsl #16
                mov     ip, lr, lsl #16
                orr     ip, ip, ip, lsr #16
                mov     lr, lr, lsr #16
                orr     lr, lr, lr, lsl #16
                stmia   r0!, {r3, r4, ip, lr}
                bne     acornscsi_out16lp
                LOADREGS(fd, sp!, {r4 - r6, pc})
 
acornscsi_out8: adds    r2, r2, #8
                bmi     acornscsi_out4
                ldmia   r1!, {r4, r6}
                mov     r3, r4, lsl #16
                orr     r3, r3, r3, lsr #16
                mov     r4, r4, lsr #16
                orr     r4, r4, r4, lsl #16
                mov     r5, r6, lsl #16
                orr     r5, r5, r5, lsr #16
                mov     r6, r6, lsr #16
                orr     r6, r6, r6, lsl #16
                stmia   r0!, {r3, r4, r5, r6}
                LOADREGS(eqfd, sp!, {r4 - r6, pc})
 
                sub     r2, r2, #8
acornscsi_out4: adds    r2, r2, #4
                bmi     acornscsi_out2
                ldr     r4, [r1], #4
                mov     r3, r4, lsl #16
                orr     r3, r3, r3, lsr #16
                mov     r4, r4, lsr #16
                orr     r4, r4, r4, lsl #16
                stmia   r0!, {r3, r4}
                LOADREGS(eqfd, sp!, {r4 - r6, pc})
 
                sub     r2, r2, #4
acornscsi_out2: adds    r2, r2, #2
                ldr     r3, [r1], #2
                strb    r3, [r0], #1
                mov     r3, r3, lsr #8
                strplb  r3, [r0], #1
                LOADREGS(fd, sp!, {r4 - r6, pc})
 

Line No.	Rev	Author	Line
1	199	simons	`@ linux/arch/arm/drivers/scsi/acornscsi-io.S: Acorn SCSI card IO`
2
3			`#include`
4			`#include`
5
6			`#if (IO_BASE == (PCIO_BASE & 0xff000000))`
7			`#define ADDR(off,reg) \`
8			`tst off, $0x80000000 ;\`
9			`mov reg, $IO_BASE ;\`
10			`orreq reg, reg, $(PCIO_BASE & 0x00ff0000)`
11			`#else`
12			`#define ADDR(off,reg) \`
13			`tst off, $0x80000000 ;\`
14			`movne reg, $IO_BASE ;\`
15			`moveq reg, $(PCIO_BASE & 0xff000000) ;\`
16			`orreq reg, reg, $(PCIO_BASE & 0x00ff0000)`
17			`#endif`
18
19			`@ Purpose: transfer a block of data from the acorn scsi card to memory`
20			`@ Proto : void acornscsi_in(unsigned int addr_start, char *buffer, int length)`
21			`@ Returns: nothing`
22
23			`.align`
24			`.global ___acornscsi_in`
25			`___acornscsi_in:`
26			`stmfd sp!, {r4 - r7, lr}`
27			`bic r0, r0, #3`
28			`mov lr, #0xff`
29			`orr lr, lr, #0xff00`
30			`acornscsi_in16lp:`
31			`subs r2, r2, #16`
32			`bmi acornscsi_in8`
33			`ldmia r0!, {r3, r4, r5, r6}`
34			`and r3, r3, lr`
35			`orr r3, r3, r4, lsl #16`
36			`and r4, r5, lr`
37			`orr r4, r4, r6, lsl #16`
38			`ldmia r0!, {r5, r6, r7, ip}`
39			`and r5, r5, lr`
40			`orr r5, r5, r6, lsl #16`
41			`and r6, r7, lr`
42			`orr r6, r6, ip, lsl #16`
43			`stmia r1!, {r3 - r6}`
44			`bne acornscsi_in16lp`
45			`LOADREGS(fd, sp!, {r4 - r7, pc})`
46
47			`acornscsi_in8: adds r2, r2, #8`
48			`bmi acornscsi_in4`
49			`ldmia r0!, {r3, r4, r5, r6}`
50			`and r3, r3, lr`
51			`orr r3, r3, r4, lsl #16`
52			`and r4, r5, lr`
53			`orr r4, r4, r6, lsl #16`
54			`stmia r1!, {r3 - r4}`
55			`LOADREGS(eqfd, sp!, {r4 - r7, pc})`
56			`sub r2, r2, #8`
57
58			`acornscsi_in4: adds r2, r2, #4`
59			`bmi acornscsi_in2`
60			`ldmia r0!, {r3, r4}`
61			`and r3, r3, lr`
62			`orr r3, r3, r4, lsl #16`
63			`str r3, [r1], #4`
64			`LOADREGS(eqfd, sp!, {r4 - r7, pc})`
65			`sub r2, r2, #4`
66
67			`acornscsi_in2: adds r2, r2, #2`
68			`ldr r3, [r0], #4`
69			`and r3, r3, lr`
70			`strb r3, [r1], #1`
71			`mov r3, r3, lsr #8`
72			`strplb r3, [r1], #1`
73			`LOADREGS(fd, sp!, {r4 - r7, pc})`
74
75			`@ Purpose: transfer a block of data from memory to the acorn scsi card`
76			`@ Proto : void acornscsi_in(unsigned int addr_start, char *buffer, int length)`
77			`@ Returns: nothing`
78
79			`.global ___acornscsi_out`
80			`___acornscsi_out:`
81			`stmfd sp!, {r4 - r6, lr}`
82			`bic r0, r0, #3`
83			`acornscsi_out16lp:`
84			`subs r2, r2, #16`
85			`bmi acornscsi_out8`
86			`ldmia r1!, {r4, r6, ip, lr}`
87			`mov r3, r4, lsl #16`
88			`orr r3, r3, r3, lsr #16`
89			`mov r4, r4, lsr #16`
90			`orr r4, r4, r4, lsl #16`
91			`mov r5, r6, lsl #16`
92			`orr r5, r5, r5, lsr #16`
93			`mov r6, r6, lsr #16`
94			`orr r6, r6, r6, lsl #16`
95			`stmia r0!, {r3, r4, r5, r6}`
96			`mov r3, ip, lsl #16`
97			`orr r3, r3, r3, lsr #16`
98			`mov r4, ip, lsr #16`
99			`orr r4, r4, r4, lsl #16`
100			`mov ip, lr, lsl #16`
101			`orr ip, ip, ip, lsr #16`
102			`mov lr, lr, lsr #16`
103			`orr lr, lr, lr, lsl #16`
104			`stmia r0!, {r3, r4, ip, lr}`
105			`bne acornscsi_out16lp`
106			`LOADREGS(fd, sp!, {r4 - r6, pc})`
107
108			`acornscsi_out8: adds r2, r2, #8`
109			`bmi acornscsi_out4`
110			`ldmia r1!, {r4, r6}`
111			`mov r3, r4, lsl #16`
112			`orr r3, r3, r3, lsr #16`
113			`mov r4, r4, lsr #16`
114			`orr r4, r4, r4, lsl #16`
115			`mov r5, r6, lsl #16`
116			`orr r5, r5, r5, lsr #16`
117			`mov r6, r6, lsr #16`
118			`orr r6, r6, r6, lsl #16`
119			`stmia r0!, {r3, r4, r5, r6}`
120			`LOADREGS(eqfd, sp!, {r4 - r6, pc})`
121
122			`sub r2, r2, #8`
123			`acornscsi_out4: adds r2, r2, #4`
124			`bmi acornscsi_out2`
125			`ldr r4, [r1], #4`
126			`mov r3, r4, lsl #16`
127			`orr r3, r3, r3, lsr #16`
128			`mov r4, r4, lsr #16`
129			`orr r4, r4, r4, lsl #16`
130			`stmia r0!, {r3, r4}`
131			`LOADREGS(eqfd, sp!, {r4 - r6, pc})`
132
133			`sub r2, r2, #4`
134			`acornscsi_out2: adds r2, r2, #2`
135			`ldr r3, [r1], #2`
136			`strb r3, [r0], #1`
137			`mov r3, r3, lsr #8`
138			`strplb r3, [r0], #1`
139			`LOADREGS(fd, sp!, {r4 - r6, pc})`
140

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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [arch/] [armnommu/] [drivers/] [scsi/] [acornscsi-io.S] - Blame information for rev 1765