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