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Linux/arch/mips/pci/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  *              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  ****************************************************************************/
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 */
217 

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