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1 | /* |
2 | * Sonics Silicon Backplane | |
3 | * PCI Hostdevice wrapper | |
4 | * | |
5 | * Copyright (c) 2005 Martin Langer <martin-langer@gmx.de> | |
6 | * Copyright (c) 2005 Stefano Brivio <st3@riseup.net> | |
7 | * Copyright (c) 2005 Danny van Dyk <kugelfang@gentoo.org> | |
8 | * Copyright (c) 2005 Andreas Jaggi <andreas.jaggi@waterwave.ch> | |
9 | * Copyright (c) 2005-2007 Michael Buesch <mbuesch@freenet.de> | |
10 | * | |
11 | * Licensed under the GNU/GPL. See COPYING for details. | |
12 | */ | |
13 | ||
14 | #include <linux/pci.h> | |
15 | #include <linux/ssb/ssb.h> | |
16 | ||
17 | ||
18 | #ifdef CONFIG_PM | |
19 | static int ssb_pcihost_suspend(struct pci_dev *dev, pm_message_t state) | |
20 | { | |
21 | pci_save_state(dev); | |
22 | pci_disable_device(dev); | |
23 | pci_set_power_state(dev, pci_choose_state(dev, state)); | |
24 | ||
25 | return 0; | |
26 | } | |
27 | ||
28 | static int ssb_pcihost_resume(struct pci_dev *dev) | |
29 | { | |
30 | int err; | |
31 | ||
32 | pci_set_power_state(dev, 0); | |
33 | err = pci_enable_device(dev); | |
34 | if (err) | |
35 | return err; | |
36 | pci_restore_state(dev); | |
37 | ||
38 | return 0; | |
39 | } | |
40 | #else /* CONFIG_PM */ | |
41 | # define ssb_pcihost_suspend NULL | |
42 | # define ssb_pcihost_resume NULL | |
43 | #endif /* CONFIG_PM */ | |
44 | ||
45 | static int ssb_pcihost_probe(struct pci_dev *dev, | |
46 | const struct pci_device_id *id) | |
47 | { | |
48 | struct ssb_bus *ssb; | |
49 | int err = -ENOMEM; | |
50 | const char *name; | |
51 | ||
52 | ssb = kzalloc(sizeof(*ssb), GFP_KERNEL); | |
53 | if (!ssb) | |
54 | goto out; | |
55 | err = pci_enable_device(dev); | |
56 | if (err) | |
57 | goto err_kfree_ssb; | |
58 | name = dev->dev.bus_id; | |
59 | if (dev->driver && dev->driver->name) | |
60 | name = dev->driver->name; | |
61 | err = pci_request_regions(dev, name); | |
62 | if (err) | |
63 | goto err_pci_disable; | |
64 | pci_set_master(dev); | |
65 | ||
66 | err = ssb_bus_pcibus_register(ssb, dev); | |
67 | if (err) | |
68 | goto err_pci_release_regions; | |
69 | ||
70 | pci_set_drvdata(dev, ssb); | |
71 | ||
72 | out: | |
73 | return err; | |
74 | ||
75 | err_pci_release_regions: | |
76 | pci_release_regions(dev); | |
77 | err_pci_disable: | |
78 | pci_disable_device(dev); | |
79 | err_kfree_ssb: | |
80 | kfree(ssb); | |
81 | return err; | |
82 | } | |
83 | ||
84 | static void ssb_pcihost_remove(struct pci_dev *dev) | |
85 | { | |
86 | struct ssb_bus *ssb = pci_get_drvdata(dev); | |
87 | ||
88 | ssb_bus_unregister(ssb); | |
89 | pci_release_regions(dev); | |
90 | pci_disable_device(dev); | |
91 | kfree(ssb); | |
92 | pci_set_drvdata(dev, NULL); | |
93 | } | |
94 | ||
95 | int ssb_pcihost_register(struct pci_driver *driver) | |
96 | { | |
97 | driver->probe = ssb_pcihost_probe; | |
98 | driver->remove = ssb_pcihost_remove; | |
99 | driver->suspend = ssb_pcihost_suspend; | |
100 | driver->resume = ssb_pcihost_resume; | |
101 | ||
102 | return pci_register_driver(driver); | |
103 | } | |
104 | EXPORT_SYMBOL(ssb_pcihost_register); |