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3c2aabc4 AB |
1 | /* |
2 | * Support for the VMIVME-7805 board access to the Universe II bridge. | |
3 | * | |
4 | * Author: Arthur Benilov <arthur.benilov@iba-group.com> | |
5 | * Copyright 2010 Ion Beam Application, Inc. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | */ | |
12 | ||
3c2aabc4 AB |
13 | #include <linux/module.h> |
14 | #include <linux/types.h> | |
15 | #include <linux/errno.h> | |
16 | #include <linux/pci.h> | |
17 | #include <linux/poll.h> | |
18 | #include <linux/io.h> | |
19 | ||
20 | #include "vme_vmivme7805.h" | |
21 | ||
3c2aabc4 AB |
22 | static int vmic_probe(struct pci_dev *, const struct pci_device_id *); |
23 | static void vmic_remove(struct pci_dev *); | |
3c2aabc4 AB |
24 | |
25 | /** Base address to access FPGA register */ | |
a84a3222 | 26 | static void __iomem *vmic_base; |
3c2aabc4 | 27 | |
584721ca | 28 | static const char driver_name[] = "vmivme_7805"; |
3c2aabc4 | 29 | |
584721ca | 30 | static DEFINE_PCI_DEVICE_TABLE(vmic_ids) = { |
3c2aabc4 AB |
31 | { PCI_DEVICE(PCI_VENDOR_ID_VMIC, PCI_DEVICE_ID_VTIMR) }, |
32 | { }, | |
33 | }; | |
34 | ||
35 | static struct pci_driver vmic_driver = { | |
36 | .name = driver_name, | |
37 | .id_table = vmic_ids, | |
38 | .probe = vmic_probe, | |
39 | .remove = vmic_remove, | |
40 | }; | |
41 | ||
3c2aabc4 AB |
42 | static int vmic_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
43 | { | |
44 | int retval; | |
45 | u32 data; | |
46 | ||
47 | /* Enable the device */ | |
48 | retval = pci_enable_device(pdev); | |
49 | if (retval) { | |
50 | dev_err(&pdev->dev, "Unable to enable device\n"); | |
51 | goto err; | |
52 | } | |
53 | ||
54 | /* Map Registers */ | |
55 | retval = pci_request_regions(pdev, driver_name); | |
56 | if (retval) { | |
57 | dev_err(&pdev->dev, "Unable to reserve resources\n"); | |
58 | goto err_resource; | |
59 | } | |
60 | ||
61 | /* Map registers in BAR 0 */ | |
62 | vmic_base = ioremap_nocache(pci_resource_start(pdev, 0), 16); | |
63 | if (!vmic_base) { | |
64 | dev_err(&pdev->dev, "Unable to remap CRG region\n"); | |
65 | retval = -EIO; | |
66 | goto err_remap; | |
67 | } | |
68 | ||
69 | /* Clear the FPGA VME IF contents */ | |
70 | iowrite32(0, vmic_base + VME_CONTROL); | |
71 | ||
72 | /* Clear any initial BERR */ | |
73 | data = ioread32(vmic_base + VME_CONTROL) & 0x00000FFF; | |
74 | data |= BM_VME_CONTROL_BERRST; | |
75 | iowrite32(data, vmic_base + VME_CONTROL); | |
76 | ||
77 | /* Enable the vme interface and byte swapping */ | |
78 | data = ioread32(vmic_base + VME_CONTROL) & 0x00000FFF; | |
79 | data = data | BM_VME_CONTROL_MASTER_ENDIAN | | |
80 | BM_VME_CONTROL_SLAVE_ENDIAN | | |
81 | BM_VME_CONTROL_ABLE | | |
82 | BM_VME_CONTROL_BERRI | | |
83 | BM_VME_CONTROL_BPENA | | |
84 | BM_VME_CONTROL_VBENA; | |
85 | iowrite32(data, vmic_base + VME_CONTROL); | |
86 | ||
87 | return 0; | |
88 | ||
89 | err_remap: | |
90 | pci_release_regions(pdev); | |
91 | err_resource: | |
92 | pci_disable_device(pdev); | |
93 | err: | |
94 | return retval; | |
95 | } | |
96 | ||
97 | static void vmic_remove(struct pci_dev *pdev) | |
98 | { | |
99 | iounmap(vmic_base); | |
100 | pci_release_regions(pdev); | |
101 | pci_disable_device(pdev); | |
102 | ||
103 | } | |
104 | ||
5f1e7790 | 105 | module_pci_driver(vmic_driver); |
3c2aabc4 AB |
106 | |
107 | MODULE_DESCRIPTION("VMIVME-7805 board support driver"); | |
108 | MODULE_AUTHOR("Arthur Benilov <arthur.benilov@iba-group.com>"); | |
109 | MODULE_LICENSE("GPL"); | |
110 |