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Manu Abrahambd1fcac2009-12-02 22:06:15 -03001/*
2 Mantis PCI bridge driver
3
Manu Abraham8825a092009-12-15 09:13:49 -03004 Copyright (C) Manu Abraham (abraham.manu@gmail.com)
Manu Abrahambd1fcac2009-12-02 22:06:15 -03005
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19*/
20
Manu Abrahamb3b96142009-12-04 05:41:11 -030021#include <linux/module.h>
22#include <linux/moduleparam.h>
23#include <linux/kernel.h>
Manu Abrahambd1fcac2009-12-02 22:06:15 -030024#include <asm/io.h>
Manu Abrahambd1fcac2009-12-02 22:06:15 -030025#include <asm/page.h>
26#include <linux/kmod.h>
27#include <linux/vmalloc.h>
28#include <linux/init.h>
29#include <linux/device.h>
Manu Abrahamb3b96142009-12-04 05:41:11 -030030#include <linux/pci.h>
Manu Abrahambd1fcac2009-12-02 22:06:15 -030031
32#include <asm/irq.h>
33#include <linux/signal.h>
34#include <linux/sched.h>
35#include <linux/interrupt.h>
36
Manu Abrahamb3b96142009-12-04 05:41:11 -030037#include "dmxdev.h"
38#include "dvbdev.h"
39#include "dvb_demux.h"
40#include "dvb_frontend.h"
41#include "dvb_net.h"
Manu Abrahambd1fcac2009-12-02 22:06:15 -030042
Manu Abrahamb3b96142009-12-04 05:41:11 -030043#include "mantis_common.h"
44#include "mantis_reg.h"
45#include "mantis_pci.h"
Manu Abrahambd1fcac2009-12-02 22:06:15 -030046
Manu Abrahamb3b96142009-12-04 05:41:11 -030047#define DRIVER_NAME "Mantis Core"
Manu Abrahambd1fcac2009-12-02 22:06:15 -030048
Greg Kroah-Hartman4c62e972012-12-21 13:17:53 -080049int mantis_pci_init(struct mantis_pci *mantis)
Manu Abrahambd1fcac2009-12-02 22:06:15 -030050{
Bjørn Morkabd34d82011-03-21 11:35:56 -030051 u8 latency;
Manu Abrahamb3b96142009-12-04 05:41:11 -030052 struct mantis_hwconfig *config = mantis->hwconfig;
53 struct pci_dev *pdev = mantis->pdev;
54 int err, ret = 0;
Manu Abrahambd1fcac2009-12-02 22:06:15 -030055
Manu Abrahamb3b96142009-12-04 05:41:11 -030056 dprintk(MANTIS_ERROR, 0, "found a %s PCI %s device on (%02x:%02x.%x),\n",
57 config->model_name,
58 config->dev_type,
59 mantis->pdev->bus->number,
60 PCI_SLOT(mantis->pdev->devfn),
61 PCI_FUNC(mantis->pdev->devfn));
62
63 err = pci_enable_device(pdev);
64 if (err != 0) {
65 ret = -ENODEV;
66 dprintk(MANTIS_ERROR, 1, "ERROR: PCI enable failed <%i>", err);
67 goto fail0;
68 }
69
Mauro Carvalho Chehab184ac752009-12-17 00:06:04 -020070 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
Manu Abrahamb3b96142009-12-04 05:41:11 -030071 if (err != 0) {
72 dprintk(MANTIS_ERROR, 1, "ERROR: Unable to obtain 32 bit DMA <%i>", err);
Manu Abrahambd1fcac2009-12-02 22:06:15 -030073 ret = -ENOMEM;
Manu Abrahamb3b96142009-12-04 05:41:11 -030074 goto fail1;
Manu Abrahambd1fcac2009-12-02 22:06:15 -030075 }
76
Manu Abrahambd1fcac2009-12-02 22:06:15 -030077 pci_set_master(pdev);
Manu Abrahamb3b96142009-12-04 05:41:11 -030078
79 if (!request_mem_region(pci_resource_start(pdev, 0),
80 pci_resource_len(pdev, 0),
81 DRIVER_NAME)) {
82
83 dprintk(MANTIS_ERROR, 1, "ERROR: BAR0 Request failed !");
84 ret = -ENODEV;
85 goto fail1;
86 }
87
88 mantis->mmio = ioremap(pci_resource_start(pdev, 0),
89 pci_resource_len(pdev, 0));
90
91 if (!mantis->mmio) {
92 dprintk(MANTIS_ERROR, 1, "ERROR: BAR0 remap failed !");
93 ret = -ENODEV;
94 goto fail2;
95 }
96
Manu Abrahambd1fcac2009-12-02 22:06:15 -030097 pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency);
Manu Abrahambd1fcac2009-12-02 22:06:15 -030098 mantis->latency = latency;
Bjørn Morkabd34d82011-03-21 11:35:56 -030099 mantis->revision = pdev->revision;
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300100
Manu Abrahamb3b96142009-12-04 05:41:11 -0300101 dprintk(MANTIS_ERROR, 0, " Mantis Rev %d [%04x:%04x], ",
102 mantis->revision,
103 mantis->pdev->subsystem_vendor,
104 mantis->pdev->subsystem_device);
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300105
Manu Abrahamb3b96142009-12-04 05:41:11 -0300106 dprintk(MANTIS_ERROR, 0,
107 "irq: %d, latency: %d\n memory: 0x%lx, mmio: 0x%p\n",
108 mantis->pdev->irq,
109 mantis->latency,
110 mantis->mantis_addr,
111 mantis->mmio);
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300112
Manu Abrahamb3b96142009-12-04 05:41:11 -0300113 err = request_irq(pdev->irq,
114 config->irq_handler,
115 IRQF_SHARED,
116 DRIVER_NAME,
117 mantis);
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300118
Manu Abrahamb3b96142009-12-04 05:41:11 -0300119 if (err != 0) {
120
121 dprintk(MANTIS_ERROR, 1, "ERROR: IRQ registration failed ! <%d>", err);
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300122 ret = -ENODEV;
Manu Abrahamb3b96142009-12-04 05:41:11 -0300123 goto fail3;
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300124 }
125
Manu Abrahamb3b96142009-12-04 05:41:11 -0300126 pci_set_drvdata(pdev, mantis);
127 return ret;
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300128
Manu Abrahamb3b96142009-12-04 05:41:11 -0300129 /* Error conditions */
130fail3:
131 dprintk(MANTIS_ERROR, 1, "ERROR: <%d> I/O unmap", ret);
132 if (mantis->mmio)
133 iounmap(mantis->mmio);
134
135fail2:
136 dprintk(MANTIS_ERROR, 1, "ERROR: <%d> releasing regions", ret);
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300137 release_mem_region(pci_resource_start(pdev, 0),
Manu Abrahamb3b96142009-12-04 05:41:11 -0300138 pci_resource_len(pdev, 0));
139
140fail1:
141 dprintk(MANTIS_ERROR, 1, "ERROR: <%d> disabling device", ret);
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300142 pci_disable_device(pdev);
Manu Abrahamb3b96142009-12-04 05:41:11 -0300143
144fail0:
145 dprintk(MANTIS_ERROR, 1, "ERROR: <%d> exiting", ret);
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300146 return ret;
147}
Manu Abrahamb3b96142009-12-04 05:41:11 -0300148EXPORT_SYMBOL_GPL(mantis_pci_init);
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300149
Mauro Carvalho Chehab4cf0b3f2009-12-18 09:58:46 -0200150void mantis_pci_exit(struct mantis_pci *mantis)
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300151{
Manu Abrahamb3b96142009-12-04 05:41:11 -0300152 struct pci_dev *pdev = mantis->pdev;
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300153
Manu Abrahamb3b96142009-12-04 05:41:11 -0300154 dprintk(MANTIS_NOTICE, 1, " mem: 0x%p", mantis->mmio);
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300155 free_irq(pdev->irq, mantis);
Manu Abrahamb3b96142009-12-04 05:41:11 -0300156 if (mantis->mmio) {
157 iounmap(mantis->mmio);
158 release_mem_region(pci_resource_start(pdev, 0),
159 pci_resource_len(pdev, 0));
160 }
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300161
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300162 pci_disable_device(pdev);
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300163}
Manu Abrahamb3b96142009-12-04 05:41:11 -0300164EXPORT_SYMBOL_GPL(mantis_pci_exit);
Manu Abrahambd1fcac2009-12-02 22:06:15 -0300165
166MODULE_DESCRIPTION("Mantis PCI DTV bridge driver");
167MODULE_AUTHOR("Manu Abraham");
168MODULE_LICENSE("GPL");