1 /* 2 * Copyright (C) 2001 Dave Engebretsen, IBM Corporation 3 * Copyright (C) 2003 Anton Blanchard <anton@au.ibm.com>, IBM 4 * 5 * pSeries specific routines for PCI. 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 20 */ 21 22 #include <linux/init.h> 23 #include <linux/ioport.h> 24 #include <linux/kernel.h> 25 #include <linux/pci.h> 26 #include <linux/string.h> 27 28 #include <asm/pci-bridge.h> 29 #include <asm/prom.h> 30 #include <asm/ppc-pci.h> 31 32 #if 0 33 void pcibios_name_device(struct pci_dev *dev) 34 { 35 struct device_node *dn; 36 37 /* 38 * Add IBM loc code (slot) as a prefix to the device names for service 39 */ 40 dn = pci_device_to_OF_node(dev); 41 if (dn) { 42 char *loc_code = get_property(dn, "ibm,loc-code", 0); 43 if (loc_code) { 44 int loc_len = strlen(loc_code); 45 if (loc_len < sizeof(dev->dev.name)) { 46 memmove(dev->dev.name+loc_len+1, dev->dev.name, 47 sizeof(dev->dev.name)-loc_len-1); 48 memcpy(dev->dev.name, loc_code, loc_len); 49 dev->dev.name[loc_len] = ' '; 50 dev->dev.name[sizeof(dev->dev.name)-1] = '\0'; 51 } 52 } 53 } 54 } 55 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pcibios_name_device); 56 #endif 57 58 static void __init pSeries_request_regions(void) 59 { 60 if (!isa_io_base) 61 return; 62 63 request_region(0x20,0x20,"pic1"); 64 request_region(0xa0,0x20,"pic2"); 65 request_region(0x00,0x20,"dma1"); 66 request_region(0x40,0x20,"timer"); 67 request_region(0x80,0x10,"dma page reg"); 68 request_region(0xc0,0x20,"dma2"); 69 } 70 71 void __init pSeries_final_fixup(void) 72 { 73 pSeries_request_regions(); 74 75 pci_addr_cache_build(); 76 } 77 78 /* 79 * Assume the winbond 82c105 is the IDE controller on a 80 * p610/p615/p630. We should probably be more careful in case 81 * someone tries to plug in a similar adapter. 82 */ 83 static void fixup_winbond_82c105(struct pci_dev* dev) 84 { 85 int i; 86 unsigned int reg; 87 88 if (!machine_is(pseries)) 89 return; 90 91 printk("Using INTC for W82c105 IDE controller.\n"); 92 pci_read_config_dword(dev, 0x40, ®); 93 /* Enable LEGIRQ to use INTC instead of ISA interrupts */ 94 pci_write_config_dword(dev, 0x40, reg | (1<<11)); 95 96 for (i = 0; i < DEVICE_COUNT_RESOURCE; ++i) { 97 /* zap the 2nd function of the winbond chip */ 98 if (dev->resource[i].flags & IORESOURCE_IO 99 && dev->bus->number == 0 && dev->devfn == 0x81) 100 dev->resource[i].flags &= ~IORESOURCE_IO; 101 if (dev->resource[i].start == 0 && dev->resource[i].end) { 102 dev->resource[i].flags = 0; 103 dev->resource[i].end = 0; 104 } 105 } 106 } 107 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_WINBOND, PCI_DEVICE_ID_WINBOND_82C105, 108 fixup_winbond_82c105); 109