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[linux-2.6] / arch / ppc / platforms / pal4_pci.c
1 /*
2  * arch/ppc/platforms/pal4_pci.c
3  *
4  * PCI support for SBS Palomar IV
5  *
6  * Author: Dan Cox
7  *
8  * 2002 (c) MontaVista, Software, Inc.  This file is licensed under
9  * the terms of the GNU General Public License version 2.  This program
10  * is licensed "as is" without any warranty of any kind, whether express
11  * or implied.
12  */
13
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/pci.h>
17
18 #include <asm/byteorder.h>
19 #include <asm/machdep.h>
20 #include <asm/io.h>
21 #include <asm/pci-bridge.h>
22 #include <asm/uaccess.h>
23
24 #include <syslib/cpc700.h>
25
26 #include "pal4.h"
27
28 /* not much to this.... */
29 static inline int __init
30 pal4_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
31 {
32         if (idsel == 9)
33                 return PAL4_ETH;
34         else
35                 return PAL4_INTA + (idsel - 3);
36 }
37
38 void __init
39 pal4_find_bridges(void)
40 {
41         struct pci_controller *hose;
42
43         hose = pcibios_alloc_controller();
44         if (!hose)
45                 return;
46
47         hose->first_busno = 0;
48         hose->last_busno = 0xff;
49         hose->pci_mem_offset = 0;
50
51         /* Could snatch these from the CPC700.... */
52         pci_init_resource(&hose->io_resource,
53                           0x0,
54                           0x03ffffff,
55                           IORESOURCE_IO,
56                           "PCI host bridge");
57
58         pci_init_resource(&hose->mem_resources[0],
59                           0x90000000,
60                           0x9fffffff,
61                           IORESOURCE_MEM,
62                           "PCI host bridge");
63
64         hose->io_space.start = 0x00800000;
65         hose->io_space.end = 0x03ffffff;
66         hose->mem_space.start = 0x90000000;
67         hose->mem_space.end = 0x9fffffff;
68         hose->io_base_virt = (void *) 0xf8000000;
69
70         setup_indirect_pci(hose, CPC700_PCI_CONFIG_ADDR,
71                            CPC700_PCI_CONFIG_DATA);
72
73         hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
74
75         ppc_md.pci_swizzle = common_swizzle;
76         ppc_md.pci_map_irq = pal4_map_irq;
77 }