1
2
3
4
5
6
7
8
9
10
11
12#include <linux/acpi.h>
13#include <linux/delay.h>
14#include <linux/dmi.h>
15#include <linux/pci.h>
16#include <linux/init.h>
17#include <asm/pci_x86.h>
18#include <asm/pci-direct.h>
19
20#include "bus_numa.h"
21
22static void __init cnb20le_res(u8 bus, u8 slot, u8 func)
23{
24 struct pci_root_info *info;
25 struct pci_root_res *root_res;
26 struct resource res;
27 u16 word1, word2;
28 u8 fbus, lbus;
29
30
31 fbus = read_pci_config_byte(bus, slot, func, 0x44);
32 lbus = read_pci_config_byte(bus, slot, func, 0x45);
33 info = alloc_pci_root_info(fbus, lbus, 0, 0);
34
35
36
37
38
39
40
41 if (fbus == 0) {
42 update_res(info, 0x01f0, 0x01f7, IORESOURCE_IO, 0);
43 update_res(info, 0x03f6, 0x03f6, IORESOURCE_IO, 0);
44 update_res(info, 0x0170, 0x0177, IORESOURCE_IO, 0);
45 update_res(info, 0x0376, 0x0376, IORESOURCE_IO, 0);
46 update_res(info, 0xffa0, 0xffaf, IORESOURCE_IO, 0);
47 }
48
49
50 word1 = read_pci_config_16(bus, slot, func, 0xc0);
51 word2 = read_pci_config_16(bus, slot, func, 0xc2);
52 if (word1 != word2) {
53 res.start = (word1 << 16) | 0x0000;
54 res.end = (word2 << 16) | 0xffff;
55 res.flags = IORESOURCE_MEM;
56 update_res(info, res.start, res.end, res.flags, 0);
57 }
58
59
60 word1 = read_pci_config_16(bus, slot, func, 0xc4);
61 word2 = read_pci_config_16(bus, slot, func, 0xc6);
62 if (word1 != word2) {
63 res.start = ((resource_size_t) word1 << 16) | 0x0000;
64 res.end = ((resource_size_t) word2 << 16) | 0xffff;
65 res.flags = IORESOURCE_MEM | IORESOURCE_PREFETCH;
66 update_res(info, res.start, res.end, res.flags, 0);
67 }
68
69
70 word1 = read_pci_config_16(bus, slot, func, 0xd0);
71 word2 = read_pci_config_16(bus, slot, func, 0xd2);
72 if (word1 != word2) {
73 res.start = word1;
74 res.end = word2;
75 res.flags = IORESOURCE_IO;
76 update_res(info, res.start, res.end, res.flags, 0);
77 }
78
79
80 res.start = fbus;
81 res.end = lbus;
82 res.flags = IORESOURCE_BUS;
83 printk(KERN_INFO "CNB20LE PCI Host Bridge (domain 0000 %pR)\n", &res);
84
85 list_for_each_entry(root_res, &info->resources, list)
86 printk(KERN_INFO "host bridge window %pR\n", &root_res->res);
87}
88
89static int __init broadcom_postcore_init(void)
90{
91 u8 bus = 0, slot = 0;
92 u32 id;
93 u16 vendor, device;
94
95#ifdef CONFIG_ACPI
96
97
98
99
100 if (acpi_os_get_root_pointer())
101 return 0;
102#endif
103
104 id = read_pci_config(bus, slot, 0, PCI_VENDOR_ID);
105 vendor = id & 0xffff;
106 device = (id >> 16) & 0xffff;
107
108 if (vendor == PCI_VENDOR_ID_SERVERWORKS &&
109 device == PCI_DEVICE_ID_SERVERWORKS_LE) {
110 cnb20le_res(bus, slot, 0);
111 cnb20le_res(bus, slot, 1);
112 }
113 return 0;
114}
115
116postcore_initcall(broadcom_postcore_init);
117