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 */
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 ****************************************************************************/
pcibios_plat_dev_init(struct pci_dev * dev)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 ****************************************************************************/
pcibios_map_irq(const struct pci_dev * dev,u8 slot,u8 pin)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 */
217