diff options
Diffstat (limited to 'arch/arm/mach-integrator/pci.c')
-rw-r--r-- | arch/arm/mach-integrator/pci.c | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/arch/arm/mach-integrator/pci.c b/arch/arm/mach-integrator/pci.c deleted file mode 100644 index 6c1667e728f5..000000000000 --- a/arch/arm/mach-integrator/pci.c +++ /dev/null | |||
@@ -1,113 +0,0 @@ | |||
1 | /* | ||
2 | * linux/arch/arm/mach-integrator/pci-integrator.c | ||
3 | * | ||
4 | * Copyright (C) 1999 ARM Limited | ||
5 | * Copyright (C) 2000 Deep Blue Solutions Ltd | ||
6 | * | ||
7 | * This program is free software; you can redistribute it and/or modify | ||
8 | * it under the terms of the GNU General Public License as published by | ||
9 | * the Free Software Foundation; either version 2 of the License, or | ||
10 | * (at your option) any later version. | ||
11 | * | ||
12 | * This program is distributed in the hope that it will be useful, | ||
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
15 | * GNU General Public License for more details. | ||
16 | * | ||
17 | * You should have received a copy of the GNU General Public License | ||
18 | * along with this program; if not, write to the Free Software | ||
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
20 | * | ||
21 | * | ||
22 | * PCI functions for Integrator | ||
23 | */ | ||
24 | #include <linux/kernel.h> | ||
25 | #include <linux/pci.h> | ||
26 | #include <linux/interrupt.h> | ||
27 | #include <linux/init.h> | ||
28 | |||
29 | #include <asm/mach/pci.h> | ||
30 | #include <asm/mach-types.h> | ||
31 | |||
32 | #include <mach/irqs.h> | ||
33 | |||
34 | /* | ||
35 | * A small note about bridges and interrupts. The DECchip 21050 (and | ||
36 | * later) adheres to the PCI-PCI bridge specification. This says that | ||
37 | * the interrupts on the other side of a bridge are swizzled in the | ||
38 | * following manner: | ||
39 | * | ||
40 | * Dev Interrupt Interrupt | ||
41 | * Pin on Pin on | ||
42 | * Device Connector | ||
43 | * | ||
44 | * 4 A A | ||
45 | * B B | ||
46 | * C C | ||
47 | * D D | ||
48 | * | ||
49 | * 5 A B | ||
50 | * B C | ||
51 | * C D | ||
52 | * D A | ||
53 | * | ||
54 | * 6 A C | ||
55 | * B D | ||
56 | * C A | ||
57 | * D B | ||
58 | * | ||
59 | * 7 A D | ||
60 | * B A | ||
61 | * C B | ||
62 | * D C | ||
63 | * | ||
64 | * Where A = pin 1, B = pin 2 and so on and pin=0 = default = A. | ||
65 | * Thus, each swizzle is ((pin-1) + (device#-4)) % 4 | ||
66 | */ | ||
67 | |||
68 | /* | ||
69 | * This routine handles multiple bridges. | ||
70 | */ | ||
71 | static u8 __init integrator_swizzle(struct pci_dev *dev, u8 *pinp) | ||
72 | { | ||
73 | if (*pinp == 0) | ||
74 | *pinp = 1; | ||
75 | |||
76 | return pci_common_swizzle(dev, pinp); | ||
77 | } | ||
78 | |||
79 | static int irq_tab[4] __initdata = { | ||
80 | IRQ_AP_PCIINT0, IRQ_AP_PCIINT1, IRQ_AP_PCIINT2, IRQ_AP_PCIINT3 | ||
81 | }; | ||
82 | |||
83 | /* | ||
84 | * map the specified device/slot/pin to an IRQ. This works out such | ||
85 | * that slot 9 pin 1 is INT0, pin 2 is INT1, and slot 10 pin 1 is INT1. | ||
86 | */ | ||
87 | static int __init integrator_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) | ||
88 | { | ||
89 | int intnr = ((slot - 9) + (pin - 1)) & 3; | ||
90 | |||
91 | return irq_tab[intnr]; | ||
92 | } | ||
93 | |||
94 | extern void pci_v3_init(void *); | ||
95 | |||
96 | static struct hw_pci integrator_pci __initdata = { | ||
97 | .swizzle = integrator_swizzle, | ||
98 | .map_irq = integrator_map_irq, | ||
99 | .setup = pci_v3_setup, | ||
100 | .nr_controllers = 1, | ||
101 | .ops = &pci_v3_ops, | ||
102 | .preinit = pci_v3_preinit, | ||
103 | .postinit = pci_v3_postinit, | ||
104 | }; | ||
105 | |||
106 | static int __init integrator_pci_init(void) | ||
107 | { | ||
108 | if (machine_is_integrator()) | ||
109 | pci_common_init(&integrator_pci); | ||
110 | return 0; | ||
111 | } | ||
112 | |||
113 | subsys_initcall(integrator_pci_init); | ||