[SCSI] mpt fusion: Changes in mptfc.c mptlan.c mptsas.c and mptspi.c for logging...
[linux-2.6] / include / asm-arm / arch-pnx4008 / entry-macro.S
1 /*
2  * include/asm-arm/arch-pnx4008/entry-macro.S
3  *
4  * Low-level IRQ helper macros for PNX4008-based platforms
5  *
6  * 2005-2006 (c) MontaVista Software, Inc.
7  * Author: Vitaly Wool <vwool@ru.mvista.com>
8  * This file is licensed under  the terms of the GNU General Public
9  * License version 2. This program is licensed "as is" without any
10  * warranty of any kind, whether express or implied.
11  */
12
13 #include "platform.h"
14
15 #define IO_BASE         0xF0000000
16 #define IO_ADDRESS(x)  (((((x) & 0xff000000) >> 4) | ((x) & 0xfffff)) | IO_BASE)
17
18 #define INTRC_MASK                      0x00
19 #define INTRC_RAW_STAT                  0x04
20 #define INTRC_STAT                      0x08
21 #define INTRC_POLAR                     0x0C
22 #define INTRC_ACT_TYPE                  0x10
23 #define INTRC_TYPE                      0x14
24
25 #define SIC1_BASE_INT   32
26 #define SIC2_BASE_INT   64
27
28                 .macro  disable_fiq
29                 .endm
30
31                 .macro  get_irqnr_preamble, base, tmp
32                 .endm
33
34                 .macro  arch_ret_to_user, tmp1, tmp2
35                 .endm
36
37                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
38 /* decode the MIC interrupt numbers */
39                 ldr     \base, =IO_ADDRESS(PNX4008_INTCTRLMIC_BASE)
40                 ldr     \irqstat, [\base, #INTRC_STAT]
41
42                 cmp     \irqstat,#1<<16
43                 movhs   \irqnr,#16
44                 movlo   \irqnr,#0
45                 movhs   \irqstat,\irqstat,lsr#16
46                 cmp     \irqstat,#1<<8
47                 addhs   \irqnr,\irqnr,#8
48                 movhs   \irqstat,\irqstat,lsr#8
49                 cmp     \irqstat,#1<<4
50                 addhs   \irqnr,\irqnr,#4
51                 movhs   \irqstat,\irqstat,lsr#4
52                 cmp     \irqstat,#1<<2
53                 addhs   \irqnr,\irqnr,#2
54                 movhs   \irqstat,\irqstat,lsr#2
55                 cmp     \irqstat,#1<<1
56                 addhs   \irqnr,\irqnr,#1
57
58 /* was there an interrupt ? if not then drop out with EQ status */
59                 teq     \irqstat,#0
60                 beq     1003f
61
62 /* and now check for extended IRQ reasons */
63                 cmp     \irqnr,#1
64                 bls     1003f
65                 cmp     \irqnr,#30
66                 blo     1002f
67
68 /* IRQ 31,30  : High priority cascade IRQ handle */
69 /* read the correct SIC */
70 /* decoding status after compare : eq is 30 (SIC1) , ne is 31 (SIC2) */
71 /* set the base IRQ number */
72                 ldreq   \base, =IO_ADDRESS(PNX4008_INTCTRLSIC1_BASE)
73                 moveq  \irqnr,#SIC1_BASE_INT
74                 ldrne   \base, =IO_ADDRESS(PNX4008_INTCTRLSIC2_BASE)
75                 movne   \irqnr,#SIC2_BASE_INT
76                 ldr     \irqstat, [\base, #INTRC_STAT]
77                 ldr     \tmp,     [\base, #INTRC_TYPE]
78 /* and with inverted mask : low priority interrupts  */
79                 and     \irqstat,\irqstat,\tmp
80                 b       1004f
81
82 1003:
83 /* IRQ 1,0  : Low priority cascade IRQ handle */
84 /* read the correct SIC */
85 /* decoding status after compare : eq is 1 (SIC2) , ne is 0 (SIC1)*/
86 /* read the correct SIC */
87 /* set the base IRQ number  */
88                 ldrne   \base, =IO_ADDRESS(PNX4008_INTCTRLSIC1_BASE)
89                 movne   \irqnr,#SIC1_BASE_INT
90                 ldreq   \base, =IO_ADDRESS(PNX4008_INTCTRLSIC2_BASE)
91                 moveq   \irqnr,#SIC2_BASE_INT
92                 ldr     \irqstat, [\base, #INTRC_STAT]
93                 ldr     \tmp,     [\base, #INTRC_TYPE]
94 /* and with inverted mask : low priority interrupts  */
95                 bic     \irqstat,\irqstat,\tmp
96
97 1004:
98
99                 cmp     \irqstat,#1<<16
100                 addhs   \irqnr,\irqnr,#16
101                 movhs   \irqstat,\irqstat,lsr#16
102                 cmp     \irqstat,#1<<8
103                 addhs   \irqnr,\irqnr,#8
104                 movhs   \irqstat,\irqstat,lsr#8
105                 cmp     \irqstat,#1<<4
106                 addhs   \irqnr,\irqnr,#4
107                 movhs   \irqstat,\irqstat,lsr#4
108                 cmp     \irqstat,#1<<2
109                 addhs   \irqnr,\irqnr,#2
110                 movhs   \irqstat,\irqstat,lsr#2
111                 cmp     \irqstat,#1<<1
112                 addhs   \irqnr,\irqnr,#1
113
114
115 /* is irqstat not zero */
116
117 1002:
118 /* we assert that irqstat is not equal to zero and return ne status if true*/
119                 teq     \irqstat,#0
120 1003:
121                 .endm
122
123
124                 .macro  irq_prio_table
125                 .endm
126
127