Commit | Line | Data |
---|---|---|
51533b61 MS |
1 | #include <linux/pci.h> |
2 | #include <linux/kernel.h> | |
d6094ced | 3 | #include <hwregs/intr_vect.h> |
51533b61 | 4 | |
51533b61 MS |
5 | void pcibios_set_master(struct pci_dev *dev) |
6 | { | |
7 | u8 lat; | |
8 | pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat); | |
9 | printk(KERN_DEBUG "PCI: Setting latency timer of device %s to %d\n", pci_name(dev), lat); | |
10 | pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat); | |
11 | } | |
12 | ||
b26b2d49 | 13 | resource_size_t |
3b7a17fc | 14 | pcibios_align_resource(void *data, const struct resource *res, |
e31dd6e4 | 15 | resource_size_t size, resource_size_t align) |
51533b61 | 16 | { |
b26b2d49 | 17 | resource_size_t start = res->start; |
51533b61 | 18 | |
b26b2d49 DB |
19 | if ((res->flags & IORESOURCE_IO) && (start & 0x300)) |
20 | start = (start + 0x3ff) & ~0x3ff; | |
21 | ||
f7454c5d | 22 | return start; |
51533b61 MS |
23 | } |
24 | ||
25 | int pcibios_enable_resources(struct pci_dev *dev, int mask) | |
26 | { | |
27 | u16 cmd, old_cmd; | |
28 | int idx; | |
29 | struct resource *r; | |
30 | ||
31 | pci_read_config_word(dev, PCI_COMMAND, &cmd); | |
32 | old_cmd = cmd; | |
33 | for(idx=0; idx<6; idx++) { | |
34 | /* Only set up the requested stuff */ | |
35 | if (!(mask & (1<<idx))) | |
36 | continue; | |
37 | ||
38 | r = &dev->resource[idx]; | |
39 | if (!r->start && r->end) { | |
40 | printk(KERN_ERR "PCI: Device %s not available because of resource collisions\n", pci_name(dev)); | |
41 | return -EINVAL; | |
42 | } | |
43 | if (r->flags & IORESOURCE_IO) | |
44 | cmd |= PCI_COMMAND_IO; | |
45 | if (r->flags & IORESOURCE_MEM) | |
46 | cmd |= PCI_COMMAND_MEMORY; | |
47 | } | |
48 | if (dev->resource[PCI_ROM_RESOURCE].start) | |
49 | cmd |= PCI_COMMAND_MEMORY; | |
50 | if (cmd != old_cmd) { | |
51 | printk("PCI: Enabling device %s (%04x -> %04x)\n", pci_name(dev), old_cmd, cmd); | |
52 | pci_write_config_word(dev, PCI_COMMAND, cmd); | |
53 | } | |
54 | return 0; | |
55 | } | |
56 | ||
57 | int pcibios_enable_irq(struct pci_dev *dev) | |
58 | { | |
59 | dev->irq = EXT_INTR_VECT; | |
60 | return 0; | |
61 | } | |
62 | ||
63 | int pcibios_enable_device(struct pci_dev *dev, int mask) | |
64 | { | |
65 | int err; | |
66 | ||
67 | if ((err = pcibios_enable_resources(dev, mask)) < 0) | |
68 | return err; | |
69 | ||
bba6f6fc EB |
70 | if (!dev->msi_enabled) |
71 | pcibios_enable_irq(dev); | |
72 | return 0; | |
51533b61 | 73 | } |