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/eeh.h> 29 #include <asm/pci-bridge.h> 30 #include <asm/prom.h> 31 #include <asm/ppc-pci.h> 32 33 #if 0 34 void pcibios_name_device(struct pci_dev *dev) 35 { 36 struct device_node *dn; 37 38 /* 39 * Add IBM loc code (slot) as a prefix to the device names for service 40 */ 41 dn = pci_device_to_OF_node(dev); 42 if (dn) { 43 const char *loc_code = of_get_property(dn, "ibm,loc-code", 0); 44 if (loc_code) { 45 int loc_len = strlen(loc_code); 46 if (loc_len < sizeof(dev->dev.name)) { 47 memmove(dev->dev.name+loc_len+1, dev->dev.name, 48 sizeof(dev->dev.name)-loc_len-1); 49 memcpy(dev->dev.name, loc_code, loc_len); 50 dev->dev.name[loc_len] = ' '; 51 dev->dev.name[sizeof(dev->dev.name)-1] = '\0'; 52 } 53 } 54 } 55 } 56 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pcibios_name_device); 57 #endif 58 59 static void __init pSeries_request_regions(void) 60 { 61 if (!isa_io_base) 62 return; 63 64 request_region(0x20,0x20,"pic1"); 65 request_region(0xa0,0x20,"pic2"); 66 request_region(0x00,0x20,"dma1"); 67 request_region(0x40,0x20,"timer"); 68 request_region(0x80,0x10,"dma page reg"); 69 request_region(0xc0,0x20,"dma2"); 70 } 71 72 void __init pSeries_final_fixup(void) 73 { 74 pSeries_request_regions(); 75 76 pci_addr_cache_build(); 77 } 78 79 /* 80 * Assume the winbond 82c105 is the IDE controller on a 81 * p610/p615/p630. We should probably be more careful in case 82 * someone tries to plug in a similar adapter. 83 */ 84 static void fixup_winbond_82c105(struct pci_dev* dev) 85 { 86 int i; 87 unsigned int reg; 88 89 if (!machine_is(pseries)) 90 return; 91 92 printk("Using INTC for W82c105 IDE controller.\n"); 93 pci_read_config_dword(dev, 0x40, ®); 94 /* Enable LEGIRQ to use INTC instead of ISA interrupts */ 95 pci_write_config_dword(dev, 0x40, reg | (1<<11)); 96 97 for (i = 0; i < DEVICE_COUNT_RESOURCE; ++i) { 98 /* zap the 2nd function of the winbond chip */ 99 if (dev->resource[i].flags & IORESOURCE_IO 100 && dev->bus->number == 0 && dev->devfn == 0x81) 101 dev->resource[i].flags &= ~IORESOURCE_IO; 102 if (dev->resource[i].start == 0 && dev->resource[i].end) { 103 dev->resource[i].flags = 0; 104 dev->resource[i].end = 0; 105 } 106 } 107 } 108 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_WINBOND, PCI_DEVICE_ID_WINBOND_82C105, 109 fixup_winbond_82c105); 110