2 Mantis PCI bridge driver
4 Copyright (C) Manu Abraham (abraham.manu@gmail.com)
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.
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.
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.
21 #include <linux/module.h>
22 #include <linux/moduleparam.h>
23 #include <linux/kernel.h>
25 #include <asm/pgtable.h>
27 #include <linux/kmod.h>
28 #include <linux/vmalloc.h>
29 #include <linux/init.h>
30 #include <linux/device.h>
31 #include <linux/pci.h>
34 #include <linux/signal.h>
35 #include <linux/sched.h>
36 #include <linux/interrupt.h>
40 #include "dvb_demux.h"
41 #include "dvb_frontend.h"
44 #include "mantis_common.h"
45 #include "mantis_reg.h"
46 #include "mantis_pci.h"
48 #define DRIVER_NAME "Mantis Core"
50 int __devinit
mantis_pci_init(struct mantis_pci
*mantis
)
53 struct mantis_hwconfig
*config
= mantis
->hwconfig
;
54 struct pci_dev
*pdev
= mantis
->pdev
;
57 dprintk(MANTIS_ERROR
, 0, "found a %s PCI %s device on (%02x:%02x.%x),\n",
60 mantis
->pdev
->bus
->number
,
61 PCI_SLOT(mantis
->pdev
->devfn
),
62 PCI_FUNC(mantis
->pdev
->devfn
));
64 err
= pci_enable_device(pdev
);
67 dprintk(MANTIS_ERROR
, 1, "ERROR: PCI enable failed <%i>", err
);
71 err
= pci_set_consistent_dma_mask(pdev
, DMA_BIT_MASK(32));
73 dprintk(MANTIS_ERROR
, 1, "ERROR: Unable to obtain 32 bit DMA <%i>", err
);
80 if (!request_mem_region(pci_resource_start(pdev
, 0),
81 pci_resource_len(pdev
, 0),
84 dprintk(MANTIS_ERROR
, 1, "ERROR: BAR0 Request failed !");
89 mantis
->mmio
= ioremap(pci_resource_start(pdev
, 0),
90 pci_resource_len(pdev
, 0));
93 dprintk(MANTIS_ERROR
, 1, "ERROR: BAR0 remap failed !");
98 pci_read_config_byte(pdev
, PCI_LATENCY_TIMER
, &latency
);
99 pci_read_config_byte(pdev
, PCI_CLASS_REVISION
, &revision
);
100 mantis
->latency
= latency
;
101 mantis
->revision
= revision
;
103 dprintk(MANTIS_ERROR
, 0, " Mantis Rev %d [%04x:%04x], ",
105 mantis
->pdev
->subsystem_vendor
,
106 mantis
->pdev
->subsystem_device
);
108 dprintk(MANTIS_ERROR
, 0,
109 "irq: %d, latency: %d\n memory: 0x%lx, mmio: 0x%p\n",
115 err
= request_irq(pdev
->irq
,
123 dprintk(MANTIS_ERROR
, 1, "ERROR: IRQ registration failed ! <%d>", err
);
128 pci_set_drvdata(pdev
, mantis
);
131 /* Error conditions */
133 dprintk(MANTIS_ERROR
, 1, "ERROR: <%d> I/O unmap", ret
);
135 iounmap(mantis
->mmio
);
138 dprintk(MANTIS_ERROR
, 1, "ERROR: <%d> releasing regions", ret
);
139 release_mem_region(pci_resource_start(pdev
, 0),
140 pci_resource_len(pdev
, 0));
143 dprintk(MANTIS_ERROR
, 1, "ERROR: <%d> disabling device", ret
);
144 pci_disable_device(pdev
);
147 dprintk(MANTIS_ERROR
, 1, "ERROR: <%d> exiting", ret
);
148 pci_set_drvdata(pdev
, NULL
);
151 EXPORT_SYMBOL_GPL(mantis_pci_init
);
153 void mantis_pci_exit(struct mantis_pci
*mantis
)
155 struct pci_dev
*pdev
= mantis
->pdev
;
157 dprintk(MANTIS_NOTICE
, 1, " mem: 0x%p", mantis
->mmio
);
158 free_irq(pdev
->irq
, mantis
);
160 iounmap(mantis
->mmio
);
161 release_mem_region(pci_resource_start(pdev
, 0),
162 pci_resource_len(pdev
, 0));
165 pci_disable_device(pdev
);
166 pci_set_drvdata(pdev
, NULL
);
168 EXPORT_SYMBOL_GPL(mantis_pci_exit
);
170 MODULE_DESCRIPTION("Mantis PCI DTV bridge driver");
171 MODULE_AUTHOR("Manu Abraham");
172 MODULE_LICENSE("GPL");
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