1/*
2 *
3 * BRIEF MODULE DESCRIPTION
4 *	Board specific pci fixups.
5 *
6 * Copyright 2001 MontaVista Software Inc.
7 * Author: MontaVista Software, Inc.
8 *         	ppopov@mvista.com or source@mvista.com
9 *
10 *  This program is free software; you can redistribute  it and/or modify it
11 *  under  the terms of  the GNU General  Public License as published by the
12 *  Free Software Foundation;  either version 2 of the  License, or (at your
13 *  option) any later version.
14 *
15 *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
16 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
17 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
18 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
19 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
21 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
22 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
23 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 *  You should have received a copy of the  GNU General Public License along
27 *  with this program; if not, write  to the Free Software Foundation, Inc.,
28 *  675 Mass Ave, Cambridge, MA 02139, USA.
29 */
30#include <linux/types.h>
31#include <linux/pci.h>
32#include <linux/init.h>
33
34#include <asm/jmr3927/jmr3927.h>
35
36int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
37{
38	unsigned char irq = pin;
39
40	/* SMSC SLC90E66 IDE uses irq 14, 15 (default) */
41	if (dev->vendor == PCI_VENDOR_ID_EFAR &&
42	    dev->device == PCI_DEVICE_ID_EFAR_SLC90E66_1)
43		return irq;
44	/* IRQ rotation (PICMG) */
45	irq--;			/* 0-3 */
46	if (dev->bus->parent == NULL &&
47	    slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(23)) {
48		/* PCI CardSlot (IDSEL=A23, DevNu=12) */
49		/* PCIA => PCIC (IDSEL=A23) */
50		/* NOTE: JMR3927 JP1 must be set to OPEN */
51		irq = (irq + 2) % 4;
52	} else if (dev->bus->parent == NULL &&
53		   slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(22)) {
54		/* PCI CardSlot (IDSEL=A22, DevNu=11) */
55		/* PCIA => PCIA (IDSEL=A22) */
56		/* NOTE: JMR3927 JP1 must be set to OPEN */
57		irq = (irq + 0) % 4;
58	} else {
59		/* PCI Backplane */
60		irq = (irq + 3 + slot) % 4;
61	}
62	irq++;			/* 1-4 */
63
64	switch (irq) {
65	case 1:
66		irq = JMR3927_IRQ_IOC_PCIA;
67		break;
68	case 2:
69		// wrong for backplane irq = JMR3927_IRQ_IOC_PCIB;
70		irq = JMR3927_IRQ_IOC_PCID;
71		break;
72	case 3:
73		irq = JMR3927_IRQ_IOC_PCIC;
74		break;
75	case 4:
76		// wrong for backplane irq = JMR3927_IRQ_IOC_PCID;
77		irq = JMR3927_IRQ_IOC_PCIB;
78		break;
79	}
80
81	/* Check OnBoard Ethernet (IDSEL=A24, DevNu=13) */
82	if (dev->bus->parent == NULL &&
83	    slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(24))
84		irq = JMR3927_IRQ_ETHER0;
85	return irq;
86}
87
88/* Do platform specific device initialization at pci_enable_device() time */
89int pcibios_plat_dev_init(struct pci_dev *dev)
90{
91	return 0;
92}
93