Thomas Gleixner | 2874c5f | 2019-05-27 08:55:01 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Arthur Benilov | 3c2aabc | 2010-02-16 15:41:51 +0100 | [diff] [blame] | 2 | /* |
| 3 | * Support for the VMIVME-7805 board access to the Universe II bridge. |
| 4 | * |
| 5 | * Author: Arthur Benilov <arthur.benilov@iba-group.com> |
| 6 | * Copyright 2010 Ion Beam Application, Inc. |
Arthur Benilov | 3c2aabc | 2010-02-16 15:41:51 +0100 | [diff] [blame] | 7 | */ |
| 8 | |
Arthur Benilov | 3c2aabc | 2010-02-16 15:41:51 +0100 | [diff] [blame] | 9 | #include <linux/module.h> |
| 10 | #include <linux/types.h> |
| 11 | #include <linux/errno.h> |
| 12 | #include <linux/pci.h> |
| 13 | #include <linux/poll.h> |
| 14 | #include <linux/io.h> |
| 15 | |
| 16 | #include "vme_vmivme7805.h" |
| 17 | |
Arthur Benilov | 3c2aabc | 2010-02-16 15:41:51 +0100 | [diff] [blame] | 18 | static int vmic_probe(struct pci_dev *, const struct pci_device_id *); |
| 19 | static void vmic_remove(struct pci_dev *); |
Arthur Benilov | 3c2aabc | 2010-02-16 15:41:51 +0100 | [diff] [blame] | 20 | |
| 21 | /** Base address to access FPGA register */ |
Jingoo Han | a84a322 | 2013-08-19 16:39:11 +0900 | [diff] [blame] | 22 | static void __iomem *vmic_base; |
Arthur Benilov | 3c2aabc | 2010-02-16 15:41:51 +0100 | [diff] [blame] | 23 | |
Vincent Bossier | 584721c | 2011-06-03 10:07:39 +0100 | [diff] [blame] | 24 | static const char driver_name[] = "vmivme_7805"; |
Arthur Benilov | 3c2aabc | 2010-02-16 15:41:51 +0100 | [diff] [blame] | 25 | |
Jingoo Han | c3a09c1 | 2013-12-03 08:29:48 +0900 | [diff] [blame] | 26 | static const struct pci_device_id vmic_ids[] = { |
Arthur Benilov | 3c2aabc | 2010-02-16 15:41:51 +0100 | [diff] [blame] | 27 | { PCI_DEVICE(PCI_VENDOR_ID_VMIC, PCI_DEVICE_ID_VTIMR) }, |
| 28 | { }, |
| 29 | }; |
| 30 | |
| 31 | static struct pci_driver vmic_driver = { |
| 32 | .name = driver_name, |
| 33 | .id_table = vmic_ids, |
| 34 | .probe = vmic_probe, |
| 35 | .remove = vmic_remove, |
| 36 | }; |
| 37 | |
Arthur Benilov | 3c2aabc | 2010-02-16 15:41:51 +0100 | [diff] [blame] | 38 | static int vmic_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
| 39 | { |
| 40 | int retval; |
| 41 | u32 data; |
| 42 | |
| 43 | /* Enable the device */ |
| 44 | retval = pci_enable_device(pdev); |
| 45 | if (retval) { |
| 46 | dev_err(&pdev->dev, "Unable to enable device\n"); |
| 47 | goto err; |
| 48 | } |
| 49 | |
| 50 | /* Map Registers */ |
| 51 | retval = pci_request_regions(pdev, driver_name); |
| 52 | if (retval) { |
| 53 | dev_err(&pdev->dev, "Unable to reserve resources\n"); |
| 54 | goto err_resource; |
| 55 | } |
| 56 | |
| 57 | /* Map registers in BAR 0 */ |
| 58 | vmic_base = ioremap_nocache(pci_resource_start(pdev, 0), 16); |
| 59 | if (!vmic_base) { |
| 60 | dev_err(&pdev->dev, "Unable to remap CRG region\n"); |
| 61 | retval = -EIO; |
| 62 | goto err_remap; |
| 63 | } |
| 64 | |
| 65 | /* Clear the FPGA VME IF contents */ |
| 66 | iowrite32(0, vmic_base + VME_CONTROL); |
| 67 | |
| 68 | /* Clear any initial BERR */ |
| 69 | data = ioread32(vmic_base + VME_CONTROL) & 0x00000FFF; |
| 70 | data |= BM_VME_CONTROL_BERRST; |
| 71 | iowrite32(data, vmic_base + VME_CONTROL); |
| 72 | |
| 73 | /* Enable the vme interface and byte swapping */ |
| 74 | data = ioread32(vmic_base + VME_CONTROL) & 0x00000FFF; |
| 75 | data = data | BM_VME_CONTROL_MASTER_ENDIAN | |
| 76 | BM_VME_CONTROL_SLAVE_ENDIAN | |
| 77 | BM_VME_CONTROL_ABLE | |
| 78 | BM_VME_CONTROL_BERRI | |
| 79 | BM_VME_CONTROL_BPENA | |
| 80 | BM_VME_CONTROL_VBENA; |
| 81 | iowrite32(data, vmic_base + VME_CONTROL); |
| 82 | |
| 83 | return 0; |
| 84 | |
| 85 | err_remap: |
| 86 | pci_release_regions(pdev); |
| 87 | err_resource: |
| 88 | pci_disable_device(pdev); |
| 89 | err: |
| 90 | return retval; |
| 91 | } |
| 92 | |
| 93 | static void vmic_remove(struct pci_dev *pdev) |
| 94 | { |
| 95 | iounmap(vmic_base); |
| 96 | pci_release_regions(pdev); |
| 97 | pci_disable_device(pdev); |
| 98 | |
| 99 | } |
| 100 | |
Wei Yongjun | 5f1e779 | 2012-10-18 23:15:05 +0800 | [diff] [blame] | 101 | module_pci_driver(vmic_driver); |
Arthur Benilov | 3c2aabc | 2010-02-16 15:41:51 +0100 | [diff] [blame] | 102 | |
| 103 | MODULE_DESCRIPTION("VMIVME-7805 board support driver"); |
| 104 | MODULE_AUTHOR("Arthur Benilov <arthur.benilov@iba-group.com>"); |
| 105 | MODULE_LICENSE("GPL"); |
| 106 | |