projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| 22 | static int __init vmic_init(void); | |
| 23 | static int vmic_probe(struct pci_dev *, const struct pci_device_id *); | |
| 24 | static void vmic_remove(struct pci_dev *); | |
| 25 | static void __exit vmic_exit(void); | |
| 26 | ||
| 27 | /** Base address to access FPGA register */ | |
| 28 | static void *vmic_base; | |
| 29 | ||
| 584721ca | 30 | static const char driver_name[] = "vmivme_7805"; |
| 3c2aabc4 | 31 | |
| 584721ca | 32 | static DEFINE_PCI_DEVICE_TABLE(vmic_ids) = { |
| 3c2aabc4 AB |
33 | { PCI_DEVICE(PCI_VENDOR_ID_VMIC, PCI_DEVICE_ID_VTIMR) }, |
| 34 | { }, | |
| 35 | }; | |
| 36 | ||
| 37 | static struct pci_driver vmic_driver = { | |
| 38 | .name = driver_name, | |
| 39 | .id_table = vmic_ids, | |
| 40 | .probe = vmic_probe, | |
| 41 | .remove = vmic_remove, | |
| 42 | }; | |
| 43 | ||
| 44 | static int __init vmic_init(void) | |
| 45 | { | |
| 46 | return pci_register_driver(&vmic_driver); | |
| 47 | } | |
| 48 | ||
| 49 | static int vmic_probe(struct pci_dev *pdev, const struct pci_device_id *id) | |
| 50 | { | |
| 51 | int retval; | |
| 52 | u32 data; | |
| 53 | ||
| 54 | /* Enable the device */ | |
| 55 | retval = pci_enable_device(pdev); | |
| 56 | if (retval) { | |
| 57 | dev_err(&pdev->dev, "Unable to enable device\n"); | |
| 58 | goto err; | |
| 59 | } | |
| 60 | ||
| 61 | /* Map Registers */ | |
| 62 | retval = pci_request_regions(pdev, driver_name); | |
| 63 | if (retval) { | |
| 64 | dev_err(&pdev->dev, "Unable to reserve resources\n"); | |
| 65 | goto err_resource; | |
| 66 | } | |
| 67 | ||
| 68 | /* Map registers in BAR 0 */ | |
| 69 | vmic_base = ioremap_nocache(pci_resource_start(pdev, 0), 16); | |
| 70 | if (!vmic_base) { | |
| 71 | dev_err(&pdev->dev, "Unable to remap CRG region\n"); | |
| 72 | retval = -EIO; | |
| 73 | goto err_remap; | |
| 74 | } | |
| 75 | ||
| 76 | /* Clear the FPGA VME IF contents */ | |
| 77 | iowrite32(0, vmic_base + VME_CONTROL); | |
| 78 | ||
| 79 | /* Clear any initial BERR */ | |
| 80 | data = ioread32(vmic_base + VME_CONTROL) & 0x00000FFF; | |
| 81 | data |= BM_VME_CONTROL_BERRST; | |
| 82 | iowrite32(data, vmic_base + VME_CONTROL); | |
| 83 | ||
| 84 | /* Enable the vme interface and byte swapping */ | |
| 85 | data = ioread32(vmic_base + VME_CONTROL) & 0x00000FFF; | |
| 86 | data = data | BM_VME_CONTROL_MASTER_ENDIAN | | |
| 87 | BM_VME_CONTROL_SLAVE_ENDIAN | | |
| 88 | BM_VME_CONTROL_ABLE | | |
| 89 | BM_VME_CONTROL_BERRI | | |
| 90 | BM_VME_CONTROL_BPENA | | |
| 91 | BM_VME_CONTROL_VBENA; | |
| 92 | iowrite32(data, vmic_base + VME_CONTROL); | |
| 93 | ||
| 94 | return 0; | |
| 95 | ||
| 96 | err_remap: | |
| 97 | pci_release_regions(pdev); | |
| 98 | err_resource: | |
| 99 | pci_disable_device(pdev); | |
| 100 | err: | |
| 101 | return retval; | |
| 102 | } | |
| 103 | ||
| 104 | static void vmic_remove(struct pci_dev *pdev) | |
| 105 | { | |
| 106 | iounmap(vmic_base); | |
| 107 | pci_release_regions(pdev); | |
| 108 | pci_disable_device(pdev); | |
| 109 | ||
| 110 | } | |
| 111 | ||
| 112 | static void __exit vmic_exit(void) | |
| 113 | { | |
| 114 | pci_unregister_driver(&vmic_driver); | |
| 115 | } | |
| 116 | ||
| 117 | MODULE_DESCRIPTION("VMIVME-7805 board support driver"); | |
| 118 | MODULE_AUTHOR("Arthur Benilov <arthur.benilov@iba-group.com>"); | |
| 119 | MODULE_LICENSE("GPL"); | |
| 120 | ||
| 121 | module_init(vmic_init); | |
| 122 | module_exit(vmic_exit); | |
| 123 |