1/*
2 * PMC-Sierra MSP board specific pci fixups.
3 *
4 * Copyright 2001 MontaVista Software Inc.
5 * Copyright 2005-2007 PMC-Sierra, Inc
6 *
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
31#ifdef CONFIG_PCI
32
33#include <linux/types.h>
34#include <linux/pci.h>
35#include <linux/kernel.h>
36#include <linux/init.h>
37
38#include <asm/byteorder.h>
39
40#include <msp_pci.h>
41#include <msp_cic_int.h>
42
43/* PCI interrupt pins */
44#define IRQ4	MSP_INT_EXT4
45#define IRQ5	MSP_INT_EXT5
46#define IRQ6	MSP_INT_EXT6
47
48#if defined(CONFIG_PMC_MSP7120_GW)
49/* Garibaldi Board IRQ wiring to PCI slots */
50static char irq_tab[][5] __initdata = {
51	/* INTA	   INTB	   INTC	   INTD */
52	{0,	0,	0,	0,	0 },	/*    (AD[0]): Unused */
53	{0,	0,	0,	0,	0 },	/*    (AD[1]): Unused */
54	{0,	0,	0,	0,	0 },	/*    (AD[2]): Unused */
55	{0,	0,	0,	0,	0 },	/*    (AD[3]): Unused */
56	{0,	0,	0,	0,	0 },	/*    (AD[4]): Unused */
57	{0,	0,	0,	0,	0 },	/*    (AD[5]): Unused */
58	{0,	0,	0,	0,	0 },	/*    (AD[6]): Unused */
59	{0,	0,	0,	0,	0 },	/*    (AD[7]): Unused */
60	{0,	0,	0,	0,	0 },	/*    (AD[8]): Unused */
61	{0,	0,	0,	0,	0 },	/*    (AD[9]): Unused */
62	{0,	0,	0,	0,	0 },	/*  0 (AD[10]): Unused */
63	{0,	0,	0,	0,	0 },	/*  1 (AD[11]): Unused */
64	{0,	0,	0,	0,	0 },	/*  2 (AD[12]): Unused */
65	{0,	0,	0,	0,	0 },	/*  3 (AD[13]): Unused */
66	{0,	0,	0,	0,	0 },	/*  4 (AD[14]): Unused */
67	{0,	0,	0,	0,	0 },	/*  5 (AD[15]): Unused */
68	{0,	0,	0,	0,	0 },	/*  6 (AD[16]): Unused */
69	{0,	0,	0,	0,	0 },	/*  7 (AD[17]): Unused */
70	{0,	0,	0,	0,	0 },	/*  8 (AD[18]): Unused */
71	{0,	0,	0,	0,	0 },	/*  9 (AD[19]): Unused */
72	{0,	0,	0,	0,	0 },	/* 10 (AD[20]): Unused */
73	{0,	0,	0,	0,	0 },	/* 11 (AD[21]): Unused */
74	{0,	0,	0,	0,	0 },	/* 12 (AD[22]): Unused */
75	{0,	0,	0,	0,	0 },	/* 13 (AD[23]): Unused */
76	{0,	0,	0,	0,	0 },	/* 14 (AD[24]): Unused */
77	{0,	0,	0,	0,	0 },	/* 15 (AD[25]): Unused */
78	{0,	0,	0,	0,	0 },	/* 16 (AD[26]): Unused */
79	{0,	0,	0,	0,	0 },	/* 17 (AD[27]): Unused */
80	{0,	IRQ4,	IRQ4,	0,	0 },	/* 18 (AD[28]): slot 0 */
81	{0,	0,	0,	0,	0 },	/* 19 (AD[29]): Unused */
82	{0,	IRQ5,	IRQ5,	0,	0 },	/* 20 (AD[30]): slot 1 */
83	{0,	IRQ6,	IRQ6,	0,	0 }	/* 21 (AD[31]): slot 2 */
84};
85
86#elif defined(CONFIG_PMC_MSP7120_EVAL)
87
88/* MSP7120 Eval Board IRQ wiring to PCI slots */
89static char irq_tab[][5] __initdata = {
90	/* INTA	   INTB	   INTC	   INTD */
91	{0,	0,	0,	0,	0 },	/*    (AD[0]): Unused */
92	{0,	0,	0,	0,	0 },	/*    (AD[1]): Unused */
93	{0,	0,	0,	0,	0 },	/*    (AD[2]): Unused */
94	{0,	0,	0,	0,	0 },	/*    (AD[3]): Unused */
95	{0,	0,	0,	0,	0 },	/*    (AD[4]): Unused */
96	{0,	0,	0,	0,	0 },	/*    (AD[5]): Unused */
97	{0,	0,	0,	0,	0 },	/*    (AD[6]): Unused */
98	{0,	0,	0,	0,	0 },	/*    (AD[7]): Unused */
99	{0,	0,	0,	0,	0 },	/*    (AD[8]): Unused */
100	{0,	0,	0,	0,	0 },	/*    (AD[9]): Unused */
101	{0,	0,	0,	0,	0 },	/*  0 (AD[10]): Unused */
102	{0,	0,	0,	0,	0 },	/*  1 (AD[11]): Unused */
103	{0,	0,	0,	0,	0 },	/*  2 (AD[12]): Unused */
104	{0,	0,	0,	0,	0 },	/*  3 (AD[13]): Unused */
105	{0,	0,	0,	0,	0 },	/*  4 (AD[14]): Unused */
106	{0,	0,	0,	0,	0 },	/*  5 (AD[15]): Unused */
107	{0,	IRQ6,	IRQ6,	0,	0 },	/*  6 (AD[16]): slot 3 (mini) */
108	{0,	IRQ5,	IRQ5,	0,	0 },	/*  7 (AD[17]): slot 2 (mini) */
109	{0,	IRQ4,	IRQ4,	IRQ4,	IRQ4},	/*  8 (AD[18]): slot 0 (PCI) */
110	{0,	IRQ5,	IRQ5,	IRQ5,	IRQ5},	/*  9 (AD[19]): slot 1 (PCI) */
111	{0,	0,	0,	0,	0 },	/* 10 (AD[20]): Unused */
112	{0,	0,	0,	0,	0 },	/* 11 (AD[21]): Unused */
113	{0,	0,	0,	0,	0 },	/* 12 (AD[22]): Unused */
114	{0,	0,	0,	0,	0 },	/* 13 (AD[23]): Unused */
115	{0,	0,	0,	0,	0 },	/* 14 (AD[24]): Unused */
116	{0,	0,	0,	0,	0 },	/* 15 (AD[25]): Unused */
117	{0,	0,	0,	0,	0 },	/* 16 (AD[26]): Unused */
118	{0,	0,	0,	0,	0 },	/* 17 (AD[27]): Unused */
119	{0,	0,	0,	0,	0 },	/* 18 (AD[28]): Unused */
120	{0,	0,	0,	0,	0 },	/* 19 (AD[29]): Unused */
121	{0,	0,	0,	0,	0 },	/* 20 (AD[30]): Unused */
122	{0,	0,	0,	0,	0 }	/* 21 (AD[31]): Unused */
123};
124
125#else
126
127/* Unknown board -- don't assign any IRQs */
128static char irq_tab[][5] __initdata = {
129	/* INTA	   INTB	   INTC	   INTD */
130	{0,	0,	0,	0,	0 },	/*    (AD[0]): Unused */
131	{0,	0,	0,	0,	0 },	/*    (AD[1]): Unused */
132	{0,	0,	0,	0,	0 },	/*    (AD[2]): Unused */
133	{0,	0,	0,	0,	0 },	/*    (AD[3]): Unused */
134	{0,	0,	0,	0,	0 },	/*    (AD[4]): Unused */
135	{0,	0,	0,	0,	0 },	/*    (AD[5]): Unused */
136	{0,	0,	0,	0,	0 },	/*    (AD[6]): Unused */
137	{0,	0,	0,	0,	0 },	/*    (AD[7]): Unused */
138	{0,	0,	0,	0,	0 },	/*    (AD[8]): Unused */
139	{0,	0,	0,	0,	0 },	/*    (AD[9]): Unused */
140	{0,	0,	0,	0,	0 },	/*  0 (AD[10]): Unused */
141	{0,	0,	0,	0,	0 },	/*  1 (AD[11]): Unused */
142	{0,	0,	0,	0,	0 },	/*  2 (AD[12]): Unused */
143	{0,	0,	0,	0,	0 },	/*  3 (AD[13]): Unused */
144	{0,	0,	0,	0,	0 },	/*  4 (AD[14]): Unused */
145	{0,	0,	0,	0,	0 },	/*  5 (AD[15]): Unused */
146	{0,	0,	0,	0,	0 },	/*  6 (AD[16]): Unused */
147	{0,	0,	0,	0,	0 },	/*  7 (AD[17]): Unused */
148	{0,	0,	0,	0,	0 },	/*  8 (AD[18]): Unused */
149	{0,	0,	0,	0,	0 },	/*  9 (AD[19]): Unused */
150	{0,	0,	0,	0,	0 },	/* 10 (AD[20]): Unused */
151	{0,	0,	0,	0,	0 },	/* 11 (AD[21]): Unused */
152	{0,	0,	0,	0,	0 },	/* 12 (AD[22]): Unused */
153	{0,	0,	0,	0,	0 },	/* 13 (AD[23]): Unused */
154	{0,	0,	0,	0,	0 },	/* 14 (AD[24]): Unused */
155	{0,	0,	0,	0,	0 },	/* 15 (AD[25]): Unused */
156	{0,	0,	0,	0,	0 },	/* 16 (AD[26]): Unused */
157	{0,	0,	0,	0,	0 },	/* 17 (AD[27]): Unused */
158	{0,	0,	0,	0,	0 },	/* 18 (AD[28]): Unused */
159	{0,	0,	0,	0,	0 },	/* 19 (AD[29]): Unused */
160	{0,	0,	0,	0,	0 },	/* 20 (AD[30]): Unused */
161	{0,	0,	0,	0,	0 }	/* 21 (AD[31]): Unused */
162};
163#endif
164
165/*****************************************************************************
166 *
167 *  FUNCTION: pcibios_plat_dev_init
168 *  _________________________________________________________________________
169 *
170 *  DESCRIPTION: Perform platform specific device initialization at
171 *		 pci_enable_device() time.
172 *		 None are needed for the MSP7120 PCI Controller.
173 *
174 *  INPUTS:	 dev	 - structure describing the PCI device
175 *
176 *  OUTPUTS:	 none
177 *
178 *  RETURNS:	 PCIBIOS_SUCCESSFUL
179 *
180 ****************************************************************************/
181int pcibios_plat_dev_init(struct pci_dev *dev)
182{
183	return PCIBIOS_SUCCESSFUL;
184}
185
186/*****************************************************************************
187 *
188 *  FUNCTION: pcibios_map_irq
189 *  _________________________________________________________________________
190 *
191 *  DESCRIPTION: Perform board supplied PCI IRQ mapping routine.
192 *
193 *  INPUTS:	 dev	 - unused
194 *		 slot	 - PCI slot. Identified by which bit of the AD[] bus
195 *			   drives the IDSEL line. AD[10] is 0, AD[31] is
196 *			   slot 21.
197 *		 pin	 - numbered using the scheme of the PCI_INTERRUPT_PIN
198 *			   field of the config header.
199 *
200 *  OUTPUTS:	 none
201 *
202 *  RETURNS:	 IRQ number
203 *
204 ****************************************************************************/
205int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
206{
207#if !defined(CONFIG_PMC_MSP7120_GW) && !defined(CONFIG_PMC_MSP7120_EVAL)
208	printk(KERN_WARNING "PCI: unknown board, no PCI IRQs assigned.\n");
209#endif
210	printk(KERN_WARNING "PCI: irq_tab returned %d for slot=%d pin=%d\n",
211		irq_tab[slot][pin], slot, pin);
212
213	return irq_tab[slot][pin];
214}
215
216#endif	/* CONFIG_PCI */
217