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fixup-pmcmsp.c
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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  * [email protected] or [email protected]
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 */
50 static 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 */
89 static 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 */
128 static 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  ****************************************************************************/
181 int 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  ****************************************************************************/
205 int __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 */
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