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1 /*
2 * Copyright (C) 2001 Dave Engebretsen, IBM Corporation
3 * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM
4 *
5 * pSeries specific routines for PCI.
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 #include <linux/init.h>
23 #include <linux/ioport.h>
24 #include <linux/kernel.h>
25 #include <linux/pci.h>
26 #include <linux/string.h>
27
28 #include <asm/eeh.h>
29 #include <asm/pci-bridge.h>
30 #include <asm/prom.h>
31 #include <asm/ppc-pci.h>
32
33 #if 0
34 void pcibios_name_device(struct pci_dev *dev)
35 {
36 struct device_node *dn;
37
38 /*
39 * Add IBM loc code (slot) as a prefix to the device names for service
40 */
41 dn = pci_device_to_OF_node(dev);
42 if (dn) {
43 const char *loc_code = of_get_property(dn, "ibm,loc-code", 0);
44 if (loc_code) {
45 int loc_len = strlen(loc_code);
46 if (loc_len < sizeof(dev->dev.name)) {
47 memmove(dev->dev.name+loc_len+1, dev->dev.name,
48 sizeof(dev->dev.name)-loc_len-1);
49 memcpy(dev->dev.name, loc_code, loc_len);
50 dev->dev.name[loc_len] = ' ';
51 dev->dev.name[sizeof(dev->dev.name)-1] = '\0';
52 }
53 }
54 }
55 }
56 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pcibios_name_device);
57 #endif
58
59 static void __init pSeries_request_regions(void)
60 {
61 if (!isa_io_base)
62 return;
63
64 request_region(0x20,0x20,"pic1");
65 request_region(0xa0,0x20,"pic2");
66 request_region(0x00,0x20,"dma1");
67 request_region(0x40,0x20,"timer");
68 request_region(0x80,0x10,"dma page reg");
69 request_region(0xc0,0x20,"dma2");
70 }
71
72 void __init pSeries_final_fixup(void)
73 {
74 pSeries_request_regions();
75
76 pci_addr_cache_build();
77 }
78
79 /*
80 * Assume the winbond 82c105 is the IDE controller on a
81 * p610/p615/p630. We should probably be more careful in case
82 * someone tries to plug in a similar adapter.
83 */
84 static void fixup_winbond_82c105(struct pci_dev* dev)
85 {
86 int i;
87 unsigned int reg;
88
89 if (!machine_is(pseries))
90 return;
91
92 printk("Using INTC for W82c105 IDE controller.\n");
93 pci_read_config_dword(dev, 0x40, &reg);
94 /* Enable LEGIRQ to use INTC instead of ISA interrupts */
95 pci_write_config_dword(dev, 0x40, reg | (1<<11));
96
97 for (i = 0; i < DEVICE_COUNT_RESOURCE; ++i) {
98 /* zap the 2nd function of the winbond chip */
99 if (dev->resource[i].flags & IORESOURCE_IO
100 && dev->bus->number == 0 && dev->devfn == 0x81)
101 dev->resource[i].flags &= ~IORESOURCE_IO;
102 if (dev->resource[i].start == 0 && dev->resource[i].end) {
103 dev->resource[i].flags = 0;
104 dev->resource[i].end = 0;
105 }
106 }
107 }
108 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_WINBOND, PCI_DEVICE_ID_WINBOND_82C105,
109 fixup_winbond_82c105);