Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * IBM Hot Plug Controller Driver |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 3 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * Written By: Irene Zubarev, IBM Corporation |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 5 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com) |
| 7 | * Copyright (C) 2001,2002 IBM Corp. |
| 8 | * |
| 9 | * All rights reserved. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or (at |
| 14 | * your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, but |
| 17 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 19 | * NON INFRINGEMENT. See the GNU General Public License for more |
| 20 | * details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; if not, write to the Free Software |
| 24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 25 | * |
| 26 | * Send feedback to <gregkh@us.ibm.com> |
| 27 | * |
| 28 | */ |
| 29 | |
| 30 | #include <linux/module.h> |
| 31 | #include <linux/slab.h> |
| 32 | #include <linux/pci.h> |
| 33 | #include <linux/list.h> |
| 34 | #include "ibmphp.h" |
| 35 | |
| 36 | |
| 37 | static int configure_device(struct pci_func *); |
| 38 | static int configure_bridge(struct pci_func **, u8); |
| 39 | static struct res_needed *scan_behind_bridge(struct pci_func *, u8); |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 40 | static int add_new_bus(struct bus_node *, struct resource_node *, struct resource_node *, struct resource_node *, u8); |
| 41 | static u8 find_sec_number(u8 primary_busno, u8 slotno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | /* |
| 44 | * NOTE..... If BIOS doesn't provide default routing, we assign: |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 45 | * 9 for SCSI, 10 for LAN adapters, and 11 for everything else. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | * If adapter is bridged, then we assign 11 to it and devices behind it. |
| 47 | * We also assign the same irq numbers for multi function devices. |
| 48 | * These are PIC mode, so shouldn't matter n.e.ways (hopefully) |
| 49 | */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 50 | static void assign_alt_irq(struct pci_func *cur_func, u8 class_code) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | { |
| 52 | int j; |
| 53 | for (j = 0; j < 4; j++) { |
| 54 | if (cur_func->irq[j] == 0xff) { |
| 55 | switch (class_code) { |
| 56 | case PCI_BASE_CLASS_STORAGE: |
| 57 | cur_func->irq[j] = SCSI_IRQ; |
| 58 | break; |
| 59 | case PCI_BASE_CLASS_NETWORK: |
| 60 | cur_func->irq[j] = LAN_IRQ; |
| 61 | break; |
| 62 | default: |
| 63 | cur_func->irq[j] = OTHER_IRQ; |
| 64 | break; |
| 65 | } |
| 66 | } |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | /* |
| 71 | * Configures the device to be added (will allocate needed resources if it |
| 72 | * can), the device can be a bridge or a regular pci device, can also be |
| 73 | * multi-functional |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 74 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | * Input: function to be added |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 76 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | * TO DO: The error case with Multifunction device or multi function bridge, |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 78 | * if there is an error, will need to go through all previous functions and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | * unconfigure....or can add some code into unconfigure_card.... |
| 80 | */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 81 | int ibmphp_configure_card(struct pci_func *func, u8 slotno) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | { |
| 83 | u16 vendor_id; |
| 84 | u32 class; |
| 85 | u8 class_code; |
| 86 | u8 hdr_type, device, sec_number; |
| 87 | u8 function; |
| 88 | struct pci_func *newfunc; /* for multi devices */ |
| 89 | struct pci_func *cur_func, *prev_func; |
| 90 | int rc, i, j; |
| 91 | int cleanup_count; |
| 92 | u8 flag; |
| 93 | u8 valid_device = 0x00; /* to see if we are able to read from card any device info at all */ |
| 94 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 95 | debug("inside configure_card, func->busno = %x\n", func->busno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | |
| 97 | device = func->device; |
| 98 | cur_func = func; |
| 99 | |
| 100 | /* We only get bus and device from IRQ routing table. So at this point, |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 101 | * func->busno is correct, and func->device contains only device (at the 5 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | * highest bits) |
| 103 | */ |
| 104 | |
| 105 | /* For every function on the card */ |
| 106 | for (function = 0x00; function < 0x08; function++) { |
| 107 | unsigned int devfn = PCI_DEVFN(device, function); |
| 108 | ibmphp_pci_bus->number = cur_func->busno; |
| 109 | |
| 110 | cur_func->function = function; |
| 111 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 112 | debug("inside the loop, cur_func->busno = %x, cur_func->device = %x, cur_func->function = %x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | cur_func->busno, cur_func->device, cur_func->function); |
| 114 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 115 | pci_bus_read_config_word(ibmphp_pci_bus, devfn, PCI_VENDOR_ID, &vendor_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 117 | debug("vendor_id is %x\n", vendor_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | if (vendor_id != PCI_VENDOR_ID_NOTVALID) { |
| 119 | /* found correct device!!! */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 120 | debug("found valid device, vendor_id = %x\n", vendor_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | |
| 122 | ++valid_device; |
| 123 | |
| 124 | /* header: x x x x x x x x |
| 125 | * | |___________|=> 1=PPB bridge, 0=normal device, 2=CardBus Bridge |
| 126 | * |_=> 0 = single function device, 1 = multi-function device |
| 127 | */ |
| 128 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 129 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, PCI_HEADER_TYPE, &hdr_type); |
| 130 | pci_bus_read_config_dword(ibmphp_pci_bus, devfn, PCI_CLASS_REVISION, &class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
| 132 | class_code = class >> 24; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 133 | debug("hrd_type = %x, class = %x, class_code %x\n", hdr_type, class, class_code); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | class >>= 8; /* to take revision out, class = class.subclass.prog i/f */ |
| 135 | if (class == PCI_CLASS_NOT_DEFINED_VGA) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 136 | err("The device %x is VGA compatible and as is not supported for hot plugging. " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | "Please choose another device.\n", cur_func->device); |
| 138 | return -ENODEV; |
| 139 | } else if (class == PCI_CLASS_DISPLAY_VGA) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 140 | err("The device %x is not supported for hot plugging. Please choose another device.\n", |
Ryan Desfosses | 227f064 | 2014-04-18 20:13:50 -0400 | [diff] [blame] | 141 | cur_func->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | return -ENODEV; |
| 143 | } |
| 144 | switch (hdr_type) { |
| 145 | case PCI_HEADER_TYPE_NORMAL: |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 146 | debug("single device case.... vendor id = %x, hdr_type = %x, class = %x\n", vendor_id, hdr_type, class); |
| 147 | assign_alt_irq(cur_func, class_code); |
Quentin Lambert | 79e50e7 | 2014-09-07 20:03:32 +0200 | [diff] [blame] | 148 | rc = configure_device(cur_func); |
| 149 | if (rc < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | /* We need to do this in case some other BARs were properly inserted */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 151 | err("was not able to configure devfunc %x on bus %x.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | cur_func->device, cur_func->busno); |
| 153 | cleanup_count = 6; |
| 154 | goto error; |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 155 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | cur_func->next = NULL; |
| 157 | function = 0x8; |
| 158 | break; |
| 159 | case PCI_HEADER_TYPE_MULTIDEVICE: |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 160 | assign_alt_irq(cur_func, class_code); |
Quentin Lambert | 79e50e7 | 2014-09-07 20:03:32 +0200 | [diff] [blame] | 161 | rc = configure_device(cur_func); |
| 162 | if (rc < 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | /* We need to do this in case some other BARs were properly inserted */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 164 | err("was not able to configure devfunc %x on bus %x...bailing out\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | cur_func->device, cur_func->busno); |
| 166 | cleanup_count = 6; |
| 167 | goto error; |
| 168 | } |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 169 | newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | if (!newfunc) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 171 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | return -ENOMEM; |
| 173 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | newfunc->busno = cur_func->busno; |
| 175 | newfunc->device = device; |
| 176 | cur_func->next = newfunc; |
| 177 | cur_func = newfunc; |
| 178 | for (j = 0; j < 4; j++) |
| 179 | newfunc->irq[j] = cur_func->irq[j]; |
| 180 | break; |
| 181 | case PCI_HEADER_TYPE_MULTIBRIDGE: |
| 182 | class >>= 8; |
| 183 | if (class != PCI_CLASS_BRIDGE_PCI) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 184 | err("This %x is not PCI-to-PCI bridge, and as is not supported for hot-plugging. Please insert another card.\n", |
Ryan Desfosses | 227f064 | 2014-04-18 20:13:50 -0400 | [diff] [blame] | 185 | cur_func->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | return -ENODEV; |
| 187 | } |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 188 | assign_alt_irq(cur_func, class_code); |
| 189 | rc = configure_bridge(&cur_func, slotno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | if (rc == -ENODEV) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 191 | err("You chose to insert Single Bridge, or nested bridges, this is not supported...\n"); |
| 192 | err("Bus %x, devfunc %x\n", cur_func->busno, cur_func->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | return rc; |
| 194 | } |
| 195 | if (rc) { |
| 196 | /* We need to do this in case some other BARs were properly inserted */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 197 | err("was not able to hot-add PPB properly.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | func->bus = 1; /* To indicate to the unconfigure function that this is a PPB */ |
| 199 | cleanup_count = 2; |
| 200 | goto error; |
| 201 | } |
| 202 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 203 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, PCI_SECONDARY_BUS, &sec_number); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 204 | flag = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | for (i = 0; i < 32; i++) { |
| 206 | if (func->devices[i]) { |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 207 | newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | if (!newfunc) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 209 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | return -ENOMEM; |
| 211 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | newfunc->busno = sec_number; |
| 213 | newfunc->device = (u8) i; |
| 214 | for (j = 0; j < 4; j++) |
| 215 | newfunc->irq[j] = cur_func->irq[j]; |
| 216 | |
| 217 | if (flag) { |
| 218 | for (prev_func = cur_func; prev_func->next; prev_func = prev_func->next) ; |
| 219 | prev_func->next = newfunc; |
| 220 | } else |
| 221 | cur_func->next = newfunc; |
| 222 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 223 | rc = ibmphp_configure_card(newfunc, slotno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | /* This could only happen if kmalloc failed */ |
| 225 | if (rc) { |
| 226 | /* We need to do this in case bridge itself got configured properly, but devices behind it failed */ |
| 227 | func->bus = 1; /* To indicate to the unconfigure function that this is a PPB */ |
| 228 | cleanup_count = 2; |
| 229 | goto error; |
| 230 | } |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 231 | flag = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | } |
| 233 | } |
| 234 | |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 235 | newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | if (!newfunc) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 237 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | return -ENOMEM; |
| 239 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | newfunc->busno = cur_func->busno; |
| 241 | newfunc->device = device; |
| 242 | for (j = 0; j < 4; j++) |
| 243 | newfunc->irq[j] = cur_func->irq[j]; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 244 | for (prev_func = cur_func; prev_func->next; prev_func = prev_func->next); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | prev_func->next = newfunc; |
| 246 | cur_func = newfunc; |
| 247 | break; |
| 248 | case PCI_HEADER_TYPE_BRIDGE: |
| 249 | class >>= 8; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 250 | debug("class now is %x\n", class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | if (class != PCI_CLASS_BRIDGE_PCI) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 252 | err("This %x is not PCI-to-PCI bridge, and as is not supported for hot-plugging. Please insert another card.\n", |
Ryan Desfosses | 227f064 | 2014-04-18 20:13:50 -0400 | [diff] [blame] | 253 | cur_func->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | return -ENODEV; |
| 255 | } |
| 256 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 257 | assign_alt_irq(cur_func, class_code); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 259 | debug("cur_func->busno b4 configure_bridge is %x\n", cur_func->busno); |
| 260 | rc = configure_bridge(&cur_func, slotno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | if (rc == -ENODEV) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 262 | err("You chose to insert Single Bridge, or nested bridges, this is not supported...\n"); |
| 263 | err("Bus %x, devfunc %x\n", cur_func->busno, cur_func->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | return rc; |
| 265 | } |
| 266 | if (rc) { |
| 267 | /* We need to do this in case some other BARs were properly inserted */ |
| 268 | func->bus = 1; /* To indicate to the unconfigure function that this is a PPB */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 269 | err("was not able to hot-add PPB properly.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | cleanup_count = 2; |
| 271 | goto error; |
| 272 | } |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 273 | debug("cur_func->busno = %x, device = %x, function = %x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | cur_func->busno, device, function); |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 275 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, PCI_SECONDARY_BUS, &sec_number); |
| 276 | debug("after configuring bridge..., sec_number = %x\n", sec_number); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 277 | flag = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | for (i = 0; i < 32; i++) { |
| 279 | if (func->devices[i]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 280 | debug("inside for loop, device is %x\n", i); |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 281 | newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | if (!newfunc) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 283 | err(" out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | return -ENOMEM; |
| 285 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | newfunc->busno = sec_number; |
| 287 | newfunc->device = (u8) i; |
| 288 | for (j = 0; j < 4; j++) |
| 289 | newfunc->irq[j] = cur_func->irq[j]; |
| 290 | |
| 291 | if (flag) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 292 | for (prev_func = cur_func; prev_func->next; prev_func = prev_func->next); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | prev_func->next = newfunc; |
| 294 | } else |
| 295 | cur_func->next = newfunc; |
| 296 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 297 | rc = ibmphp_configure_card(newfunc, slotno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | |
| 299 | /* Again, this case should not happen... For complete paranoia, will need to call remove_bus */ |
| 300 | if (rc) { |
| 301 | /* We need to do this in case some other BARs were properly inserted */ |
| 302 | func->bus = 1; /* To indicate to the unconfigure function that this is a PPB */ |
| 303 | cleanup_count = 2; |
| 304 | goto error; |
| 305 | } |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 306 | flag = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | } |
| 308 | } |
| 309 | |
| 310 | function = 0x8; |
| 311 | break; |
| 312 | default: |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 313 | err("MAJOR PROBLEM!!!!, header type not supported? %x\n", hdr_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | return -ENXIO; |
| 315 | break; |
| 316 | } /* end of switch */ |
| 317 | } /* end of valid device */ |
| 318 | } /* end of for */ |
| 319 | |
| 320 | if (!valid_device) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 321 | err("Cannot find any valid devices on the card. Or unable to read from card.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | return -ENODEV; |
| 323 | } |
| 324 | |
| 325 | return 0; |
| 326 | |
| 327 | error: |
| 328 | for (i = 0; i < cleanup_count; i++) { |
| 329 | if (cur_func->io[i]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 330 | ibmphp_remove_resource(cur_func->io[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | cur_func->io[i] = NULL; |
| 332 | } else if (cur_func->pfmem[i]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 333 | ibmphp_remove_resource(cur_func->pfmem[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | cur_func->pfmem[i] = NULL; |
| 335 | } else if (cur_func->mem[i]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 336 | ibmphp_remove_resource(cur_func->mem[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | cur_func->mem[i] = NULL; |
| 338 | } |
| 339 | } |
| 340 | return rc; |
| 341 | } |
| 342 | |
| 343 | /* |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 344 | * This function configures the pci BARs of a single device. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | * Input: pointer to the pci_func |
| 346 | * Output: configured PCI, 0, or error |
| 347 | */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 348 | static int configure_device(struct pci_func *func) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | { |
| 350 | u32 bar[6]; |
| 351 | u32 address[] = { |
| 352 | PCI_BASE_ADDRESS_0, |
| 353 | PCI_BASE_ADDRESS_1, |
| 354 | PCI_BASE_ADDRESS_2, |
| 355 | PCI_BASE_ADDRESS_3, |
| 356 | PCI_BASE_ADDRESS_4, |
| 357 | PCI_BASE_ADDRESS_5, |
| 358 | 0 |
| 359 | }; |
| 360 | u8 irq; |
| 361 | int count; |
| 362 | int len[6]; |
| 363 | struct resource_node *io[6]; |
| 364 | struct resource_node *mem[6]; |
| 365 | struct resource_node *mem_tmp; |
| 366 | struct resource_node *pfmem[6]; |
| 367 | unsigned int devfn; |
| 368 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 369 | debug("%s - inside\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | |
| 371 | devfn = PCI_DEVFN(func->device, func->function); |
| 372 | ibmphp_pci_bus->number = func->busno; |
| 373 | |
| 374 | for (count = 0; address[count]; count++) { /* for 6 BARs */ |
| 375 | |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 376 | /* not sure if i need this. per scott, said maybe need * something like this |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | if devices don't adhere 100% to the spec, so don't want to write |
| 378 | to the reserved bits |
| 379 | |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 380 | pcibios_read_config_byte(cur_func->busno, cur_func->device, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | PCI_BASE_ADDRESS_0 + 4 * count, &tmp); |
| 382 | if (tmp & 0x01) // IO |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 383 | pcibios_write_config_dword(cur_func->busno, cur_func->device, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | PCI_BASE_ADDRESS_0 + 4 * count, 0xFFFFFFFD); |
| 385 | else // Memory |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 386 | pcibios_write_config_dword(cur_func->busno, cur_func->device, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | PCI_BASE_ADDRESS_0 + 4 * count, 0xFFFFFFFF); |
| 388 | */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 389 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], 0xFFFFFFFF); |
| 390 | pci_bus_read_config_dword(ibmphp_pci_bus, devfn, address[count], &bar[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | |
| 392 | if (!bar[count]) /* This BAR is not implemented */ |
| 393 | continue; |
| 394 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 395 | debug("Device %x BAR %d wants %x\n", func->device, count, bar[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | |
| 397 | if (bar[count] & PCI_BASE_ADDRESS_SPACE_IO) { |
| 398 | /* This is IO */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 399 | debug("inside IO SPACE\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | |
| 401 | len[count] = bar[count] & 0xFFFFFFFC; |
| 402 | len[count] = ~len[count] + 1; |
| 403 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 404 | debug("len[count] in IO %x, count %d\n", len[count], count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 406 | io[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | |
| 408 | if (!io[count]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 409 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | return -ENOMEM; |
| 411 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | io[count]->type = IO; |
| 413 | io[count]->busno = func->busno; |
| 414 | io[count]->devfunc = PCI_DEVFN(func->device, func->function); |
| 415 | io[count]->len = len[count]; |
| 416 | if (ibmphp_check_resource(io[count], 0) == 0) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 417 | ibmphp_add_resource(io[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | func->io[count] = io[count]; |
| 419 | } else { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 420 | err("cannot allocate requested io for bus %x device %x function %x len %x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | func->busno, func->device, func->function, len[count]); |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 422 | kfree(io[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | return -EIO; |
| 424 | } |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 425 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], func->io[count]->start); |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 426 | |
| 427 | /* _______________This is for debugging purposes only_____________________ */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 428 | debug("b4 writing, the IO address is %x\n", func->io[count]->start); |
| 429 | pci_bus_read_config_dword(ibmphp_pci_bus, devfn, address[count], &bar[count]); |
| 430 | debug("after writing.... the start address is %x\n", bar[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | /* _________________________________________________________________________*/ |
| 432 | |
| 433 | } else { |
| 434 | /* This is Memory */ |
| 435 | if (bar[count] & PCI_BASE_ADDRESS_MEM_PREFETCH) { |
| 436 | /* pfmem */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 437 | debug("PFMEM SPACE\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | |
| 439 | len[count] = bar[count] & 0xFFFFFFF0; |
| 440 | len[count] = ~len[count] + 1; |
| 441 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 442 | debug("len[count] in PFMEM %x, count %d\n", len[count], count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 444 | pfmem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | if (!pfmem[count]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 446 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | return -ENOMEM; |
| 448 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | pfmem[count]->type = PFMEM; |
| 450 | pfmem[count]->busno = func->busno; |
| 451 | pfmem[count]->devfunc = PCI_DEVFN(func->device, |
| 452 | func->function); |
| 453 | pfmem[count]->len = len[count]; |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 454 | pfmem[count]->fromMem = 0; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 455 | if (ibmphp_check_resource(pfmem[count], 0) == 0) { |
| 456 | ibmphp_add_resource(pfmem[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | func->pfmem[count] = pfmem[count]; |
| 458 | } else { |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 459 | mem_tmp = kzalloc(sizeof(*mem_tmp), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | if (!mem_tmp) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 461 | err("out of system memory\n"); |
| 462 | kfree(pfmem[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | return -ENOMEM; |
| 464 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | mem_tmp->type = MEM; |
| 466 | mem_tmp->busno = pfmem[count]->busno; |
| 467 | mem_tmp->devfunc = pfmem[count]->devfunc; |
| 468 | mem_tmp->len = pfmem[count]->len; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 469 | debug("there's no pfmem... going into mem.\n"); |
| 470 | if (ibmphp_check_resource(mem_tmp, 0) == 0) { |
| 471 | ibmphp_add_resource(mem_tmp); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 472 | pfmem[count]->fromMem = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | pfmem[count]->rangeno = mem_tmp->rangeno; |
| 474 | pfmem[count]->start = mem_tmp->start; |
| 475 | pfmem[count]->end = mem_tmp->end; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 476 | ibmphp_add_pfmem_from_mem(pfmem[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | func->pfmem[count] = pfmem[count]; |
| 478 | } else { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 479 | err("cannot allocate requested pfmem for bus %x, device %x, len %x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | func->busno, func->device, len[count]); |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 481 | kfree(mem_tmp); |
| 482 | kfree(pfmem[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | return -EIO; |
| 484 | } |
| 485 | } |
| 486 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 487 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], func->pfmem[count]->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 489 | /*_______________This is for debugging purposes only______________________________*/ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 490 | debug("b4 writing, start address is %x\n", func->pfmem[count]->start); |
| 491 | pci_bus_read_config_dword(ibmphp_pci_bus, devfn, address[count], &bar[count]); |
| 492 | debug("after writing, start address is %x\n", bar[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | /*_________________________________________________________________________________*/ |
| 494 | |
| 495 | if (bar[count] & PCI_BASE_ADDRESS_MEM_TYPE_64) { /* takes up another dword */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 496 | debug("inside the mem 64 case, count %d\n", count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | count += 1; |
| 498 | /* on the 2nd dword, write all 0s, since we can't handle them n.e.ways */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 499 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], 0x00000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | } |
| 501 | } else { |
| 502 | /* regular memory */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 503 | debug("REGULAR MEM SPACE\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | |
| 505 | len[count] = bar[count] & 0xFFFFFFF0; |
| 506 | len[count] = ~len[count] + 1; |
| 507 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 508 | debug("len[count] in Mem %x, count %d\n", len[count], count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 510 | mem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | if (!mem[count]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 512 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | return -ENOMEM; |
| 514 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | mem[count]->type = MEM; |
| 516 | mem[count]->busno = func->busno; |
| 517 | mem[count]->devfunc = PCI_DEVFN(func->device, |
| 518 | func->function); |
| 519 | mem[count]->len = len[count]; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 520 | if (ibmphp_check_resource(mem[count], 0) == 0) { |
| 521 | ibmphp_add_resource(mem[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | func->mem[count] = mem[count]; |
| 523 | } else { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 524 | err("cannot allocate requested mem for bus %x, device %x, len %x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | func->busno, func->device, len[count]); |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 526 | kfree(mem[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | return -EIO; |
| 528 | } |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 529 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], func->mem[count]->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | /* _______________________This is for debugging purposes only _______________________*/ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 531 | debug("b4 writing, start address is %x\n", func->mem[count]->start); |
| 532 | pci_bus_read_config_dword(ibmphp_pci_bus, devfn, address[count], &bar[count]); |
| 533 | debug("after writing, the address is %x\n", bar[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | /* __________________________________________________________________________________*/ |
| 535 | |
| 536 | if (bar[count] & PCI_BASE_ADDRESS_MEM_TYPE_64) { |
| 537 | /* takes up another dword */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 538 | debug("inside mem 64 case, reg. mem, count %d\n", count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | count += 1; |
| 540 | /* on the 2nd dword, write all 0s, since we can't handle them n.e.ways */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 541 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], 0x00000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | } |
| 543 | } |
| 544 | } /* end of mem */ |
| 545 | } /* end of for */ |
| 546 | |
| 547 | func->bus = 0; /* To indicate that this is not a PPB */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 548 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, PCI_INTERRUPT_PIN, &irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | if ((irq > 0x00) && (irq < 0x05)) |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 550 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_INTERRUPT_LINE, func->irq[irq - 1]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 552 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_CACHE_LINE_SIZE, CACHE); |
| 553 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_LATENCY_TIMER, LATENCY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 555 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, PCI_ROM_ADDRESS, 0x00L); |
| 556 | pci_bus_write_config_word(ibmphp_pci_bus, devfn, PCI_COMMAND, DEVICEENABLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | |
| 558 | return 0; |
| 559 | } |
| 560 | |
| 561 | /****************************************************************************** |
| 562 | * This routine configures a PCI-2-PCI bridge and the functions behind it |
| 563 | * Parameters: pci_func |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 564 | * Returns: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | ******************************************************************************/ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 566 | static int configure_bridge(struct pci_func **func_passed, u8 slotno) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | { |
| 568 | int count; |
| 569 | int i; |
| 570 | int rc; |
| 571 | u8 sec_number; |
| 572 | u8 io_base; |
| 573 | u16 pfmem_base; |
| 574 | u32 bar[2]; |
| 575 | u32 len[2]; |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 576 | u8 flag_io = 0; |
| 577 | u8 flag_mem = 0; |
| 578 | u8 flag_pfmem = 0; |
| 579 | u8 need_io_upper = 0; |
| 580 | u8 need_pfmem_upper = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | struct res_needed *amount_needed = NULL; |
| 582 | struct resource_node *io = NULL; |
| 583 | struct resource_node *bus_io[2] = {NULL, NULL}; |
| 584 | struct resource_node *mem = NULL; |
| 585 | struct resource_node *bus_mem[2] = {NULL, NULL}; |
| 586 | struct resource_node *mem_tmp = NULL; |
| 587 | struct resource_node *pfmem = NULL; |
| 588 | struct resource_node *bus_pfmem[2] = {NULL, NULL}; |
| 589 | struct bus_node *bus; |
| 590 | u32 address[] = { |
| 591 | PCI_BASE_ADDRESS_0, |
| 592 | PCI_BASE_ADDRESS_1, |
| 593 | 0 |
| 594 | }; |
| 595 | struct pci_func *func = *func_passed; |
| 596 | unsigned int devfn; |
| 597 | u8 irq; |
| 598 | int retval; |
| 599 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 600 | debug("%s - enter\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | |
| 602 | devfn = PCI_DEVFN(func->function, func->device); |
| 603 | ibmphp_pci_bus->number = func->busno; |
| 604 | |
| 605 | /* Configuring necessary info for the bridge so that we could see the devices |
| 606 | * behind it |
| 607 | */ |
| 608 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 609 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_PRIMARY_BUS, func->busno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | |
| 611 | /* _____________________For debugging purposes only __________________________ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 612 | pci_bus_config_byte(ibmphp_pci_bus, devfn, PCI_PRIMARY_BUS, &pri_number); |
| 613 | debug("primary # written into the bridge is %x\n", pri_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | ___________________________________________________________________________*/ |
| 615 | |
| 616 | /* in EBDA, only get allocated 1 additional bus # per slot */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 617 | sec_number = find_sec_number(func->busno, slotno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | if (sec_number == 0xff) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 619 | err("cannot allocate secondary bus number for the bridged device\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | return -EINVAL; |
| 621 | } |
| 622 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 623 | debug("after find_sec_number, the number we got is %x\n", sec_number); |
| 624 | debug("AFTER FIND_SEC_NUMBER, func->busno IS %x\n", func->busno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 626 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_SECONDARY_BUS, sec_number); |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 627 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | /* __________________For debugging purposes only __________________________________ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 629 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, PCI_SECONDARY_BUS, &sec_number); |
| 630 | debug("sec_number after write/read is %x\n", sec_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | ________________________________________________________________________________*/ |
| 632 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 633 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_SUBORDINATE_BUS, sec_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | |
| 635 | /* __________________For debugging purposes only ____________________________________ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 636 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, PCI_SUBORDINATE_BUS, &sec_number); |
| 637 | debug("subordinate number after write/read is %x\n", sec_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | __________________________________________________________________________________*/ |
| 639 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 640 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_CACHE_LINE_SIZE, CACHE); |
| 641 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_LATENCY_TIMER, LATENCY); |
| 642 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_SEC_LATENCY_TIMER, LATENCY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 644 | debug("func->busno is %x\n", func->busno); |
| 645 | debug("sec_number after writing is %x\n", sec_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | |
| 647 | |
| 648 | /* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 649 | !!!!!!!!!!!!!!!NEED TO ADD!!! FAST BACK-TO-BACK ENABLE!!!!!!!!!!!!!!!!!!!! |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*/ |
| 651 | |
| 652 | |
| 653 | /* First we need to allocate mem/io for the bridge itself in case it needs it */ |
| 654 | for (count = 0; address[count]; count++) { /* for 2 BARs */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 655 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], 0xFFFFFFFF); |
| 656 | pci_bus_read_config_dword(ibmphp_pci_bus, devfn, address[count], &bar[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | |
| 658 | if (!bar[count]) { |
| 659 | /* This BAR is not implemented */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 660 | debug("so we come here then, eh?, count = %d\n", count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | continue; |
| 662 | } |
| 663 | // tmp_bar = bar[count]; |
| 664 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 665 | debug("Bar %d wants %x\n", count, bar[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | |
| 667 | if (bar[count] & PCI_BASE_ADDRESS_SPACE_IO) { |
| 668 | /* This is IO */ |
| 669 | len[count] = bar[count] & 0xFFFFFFFC; |
| 670 | len[count] = ~len[count] + 1; |
| 671 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 672 | debug("len[count] in IO = %x\n", len[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 674 | bus_io[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL); |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 675 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | if (!bus_io[count]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 677 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | retval = -ENOMEM; |
| 679 | goto error; |
| 680 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | bus_io[count]->type = IO; |
| 682 | bus_io[count]->busno = func->busno; |
| 683 | bus_io[count]->devfunc = PCI_DEVFN(func->device, |
| 684 | func->function); |
| 685 | bus_io[count]->len = len[count]; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 686 | if (ibmphp_check_resource(bus_io[count], 0) == 0) { |
| 687 | ibmphp_add_resource(bus_io[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | func->io[count] = bus_io[count]; |
| 689 | } else { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 690 | err("cannot allocate requested io for bus %x, device %x, len %x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | func->busno, func->device, len[count]); |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 692 | kfree(bus_io[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | return -EIO; |
| 694 | } |
| 695 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 696 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], func->io[count]->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | |
| 698 | } else { |
| 699 | /* This is Memory */ |
| 700 | if (bar[count] & PCI_BASE_ADDRESS_MEM_PREFETCH) { |
| 701 | /* pfmem */ |
| 702 | len[count] = bar[count] & 0xFFFFFFF0; |
| 703 | len[count] = ~len[count] + 1; |
| 704 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 705 | debug("len[count] in PFMEM = %x\n", len[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 707 | bus_pfmem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | if (!bus_pfmem[count]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 709 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | retval = -ENOMEM; |
| 711 | goto error; |
| 712 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | bus_pfmem[count]->type = PFMEM; |
| 714 | bus_pfmem[count]->busno = func->busno; |
| 715 | bus_pfmem[count]->devfunc = PCI_DEVFN(func->device, |
| 716 | func->function); |
| 717 | bus_pfmem[count]->len = len[count]; |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 718 | bus_pfmem[count]->fromMem = 0; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 719 | if (ibmphp_check_resource(bus_pfmem[count], 0) == 0) { |
| 720 | ibmphp_add_resource(bus_pfmem[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | func->pfmem[count] = bus_pfmem[count]; |
| 722 | } else { |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 723 | mem_tmp = kzalloc(sizeof(*mem_tmp), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | if (!mem_tmp) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 725 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | retval = -ENOMEM; |
| 727 | goto error; |
| 728 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | mem_tmp->type = MEM; |
| 730 | mem_tmp->busno = bus_pfmem[count]->busno; |
| 731 | mem_tmp->devfunc = bus_pfmem[count]->devfunc; |
| 732 | mem_tmp->len = bus_pfmem[count]->len; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 733 | if (ibmphp_check_resource(mem_tmp, 0) == 0) { |
| 734 | ibmphp_add_resource(mem_tmp); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 735 | bus_pfmem[count]->fromMem = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | bus_pfmem[count]->rangeno = mem_tmp->rangeno; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 737 | ibmphp_add_pfmem_from_mem(bus_pfmem[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | func->pfmem[count] = bus_pfmem[count]; |
| 739 | } else { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 740 | err("cannot allocate requested pfmem for bus %x, device %x, len %x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | func->busno, func->device, len[count]); |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 742 | kfree(mem_tmp); |
| 743 | kfree(bus_pfmem[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | return -EIO; |
| 745 | } |
| 746 | } |
| 747 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 748 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], func->pfmem[count]->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | |
| 750 | if (bar[count] & PCI_BASE_ADDRESS_MEM_TYPE_64) { |
| 751 | /* takes up another dword */ |
| 752 | count += 1; |
| 753 | /* on the 2nd dword, write all 0s, since we can't handle them n.e.ways */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 754 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], 0x00000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | |
| 756 | } |
| 757 | } else { |
| 758 | /* regular memory */ |
| 759 | len[count] = bar[count] & 0xFFFFFFF0; |
| 760 | len[count] = ~len[count] + 1; |
| 761 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 762 | debug("len[count] in Memory is %x\n", len[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 764 | bus_mem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | if (!bus_mem[count]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 766 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | retval = -ENOMEM; |
| 768 | goto error; |
| 769 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | bus_mem[count]->type = MEM; |
| 771 | bus_mem[count]->busno = func->busno; |
| 772 | bus_mem[count]->devfunc = PCI_DEVFN(func->device, |
| 773 | func->function); |
| 774 | bus_mem[count]->len = len[count]; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 775 | if (ibmphp_check_resource(bus_mem[count], 0) == 0) { |
| 776 | ibmphp_add_resource(bus_mem[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | func->mem[count] = bus_mem[count]; |
| 778 | } else { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 779 | err("cannot allocate requested mem for bus %x, device %x, len %x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | func->busno, func->device, len[count]); |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 781 | kfree(bus_mem[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | return -EIO; |
| 783 | } |
| 784 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 785 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], func->mem[count]->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | |
| 787 | if (bar[count] & PCI_BASE_ADDRESS_MEM_TYPE_64) { |
| 788 | /* takes up another dword */ |
| 789 | count += 1; |
| 790 | /* on the 2nd dword, write all 0s, since we can't handle them n.e.ways */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 791 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], 0x00000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | |
| 793 | } |
| 794 | } |
| 795 | } /* end of mem */ |
| 796 | } /* end of for */ |
| 797 | |
| 798 | /* Now need to see how much space the devices behind the bridge needed */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 799 | amount_needed = scan_behind_bridge(func, sec_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | if (amount_needed == NULL) |
| 801 | return -ENOMEM; |
| 802 | |
| 803 | ibmphp_pci_bus->number = func->busno; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 804 | debug("after coming back from scan_behind_bridge\n"); |
| 805 | debug("amount_needed->not_correct = %x\n", amount_needed->not_correct); |
| 806 | debug("amount_needed->io = %x\n", amount_needed->io); |
| 807 | debug("amount_needed->mem = %x\n", amount_needed->mem); |
| 808 | debug("amount_needed->pfmem = %x\n", amount_needed->pfmem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 810 | if (amount_needed->not_correct) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 811 | debug("amount_needed is not correct\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | for (count = 0; address[count]; count++) { |
| 813 | /* for 2 BARs */ |
| 814 | if (bus_io[count]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 815 | ibmphp_remove_resource(bus_io[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | func->io[count] = NULL; |
| 817 | } else if (bus_pfmem[count]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 818 | ibmphp_remove_resource(bus_pfmem[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | func->pfmem[count] = NULL; |
| 820 | } else if (bus_mem[count]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 821 | ibmphp_remove_resource(bus_mem[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | func->mem[count] = NULL; |
| 823 | } |
| 824 | } |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 825 | kfree(amount_needed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | return -ENODEV; |
| 827 | } |
| 828 | |
| 829 | if (!amount_needed->io) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 830 | debug("it doesn't want IO?\n"); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 831 | flag_io = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | } else { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 833 | debug("it wants %x IO behind the bridge\n", amount_needed->io); |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 834 | io = kzalloc(sizeof(*io), GFP_KERNEL); |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 835 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | if (!io) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 837 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | retval = -ENOMEM; |
| 839 | goto error; |
| 840 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | io->type = IO; |
| 842 | io->busno = func->busno; |
| 843 | io->devfunc = PCI_DEVFN(func->device, func->function); |
| 844 | io->len = amount_needed->io; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 845 | if (ibmphp_check_resource(io, 1) == 0) { |
| 846 | debug("were we able to add io\n"); |
| 847 | ibmphp_add_resource(io); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 848 | flag_io = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | } |
| 850 | } |
| 851 | |
| 852 | if (!amount_needed->mem) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 853 | debug("it doesn't want n.e.memory?\n"); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 854 | flag_mem = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | } else { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 856 | debug("it wants %x memory behind the bridge\n", amount_needed->mem); |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 857 | mem = kzalloc(sizeof(*mem), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | if (!mem) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 859 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | retval = -ENOMEM; |
| 861 | goto error; |
| 862 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | mem->type = MEM; |
| 864 | mem->busno = func->busno; |
| 865 | mem->devfunc = PCI_DEVFN(func->device, func->function); |
| 866 | mem->len = amount_needed->mem; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 867 | if (ibmphp_check_resource(mem, 1) == 0) { |
| 868 | ibmphp_add_resource(mem); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 869 | flag_mem = 1; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 870 | debug("were we able to add mem\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | } |
| 872 | } |
| 873 | |
| 874 | if (!amount_needed->pfmem) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 875 | debug("it doesn't want n.e.pfmem mem?\n"); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 876 | flag_pfmem = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | } else { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 878 | debug("it wants %x pfmemory behind the bridge\n", amount_needed->pfmem); |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 879 | pfmem = kzalloc(sizeof(*pfmem), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | if (!pfmem) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 881 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | retval = -ENOMEM; |
| 883 | goto error; |
| 884 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | pfmem->type = PFMEM; |
| 886 | pfmem->busno = func->busno; |
| 887 | pfmem->devfunc = PCI_DEVFN(func->device, func->function); |
| 888 | pfmem->len = amount_needed->pfmem; |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 889 | pfmem->fromMem = 0; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 890 | if (ibmphp_check_resource(pfmem, 1) == 0) { |
| 891 | ibmphp_add_resource(pfmem); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 892 | flag_pfmem = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | } else { |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 894 | mem_tmp = kzalloc(sizeof(*mem_tmp), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | if (!mem_tmp) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 896 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | retval = -ENOMEM; |
| 898 | goto error; |
| 899 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | mem_tmp->type = MEM; |
| 901 | mem_tmp->busno = pfmem->busno; |
| 902 | mem_tmp->devfunc = pfmem->devfunc; |
| 903 | mem_tmp->len = pfmem->len; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 904 | if (ibmphp_check_resource(mem_tmp, 1) == 0) { |
| 905 | ibmphp_add_resource(mem_tmp); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 906 | pfmem->fromMem = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | pfmem->rangeno = mem_tmp->rangeno; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 908 | ibmphp_add_pfmem_from_mem(pfmem); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 909 | flag_pfmem = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | } |
| 911 | } |
| 912 | } |
| 913 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 914 | debug("b4 if (flag_io && flag_mem && flag_pfmem)\n"); |
| 915 | debug("flag_io = %x, flag_mem = %x, flag_pfmem = %x\n", flag_io, flag_mem, flag_pfmem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | |
| 917 | if (flag_io && flag_mem && flag_pfmem) { |
| 918 | /* If on bootup, there was a bridged card in this slot, |
| 919 | * then card was removed and ibmphp got unloaded and loaded |
| 920 | * back again, there's no way for us to remove the bus |
| 921 | * struct, so no need to kmalloc, can use existing node |
| 922 | */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 923 | bus = ibmphp_find_res_bus(sec_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | if (!bus) { |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 925 | bus = kzalloc(sizeof(*bus), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | if (!bus) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 927 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | retval = -ENOMEM; |
| 929 | goto error; |
| 930 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | bus->busno = sec_number; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 932 | debug("b4 adding new bus\n"); |
| 933 | rc = add_new_bus(bus, io, mem, pfmem, func->busno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | } else if (!(bus->rangeIO) && !(bus->rangeMem) && !(bus->rangePFMem)) |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 935 | rc = add_new_bus(bus, io, mem, pfmem, 0xFF); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | else { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 937 | err("expected bus structure not empty?\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | retval = -EIO; |
| 939 | goto error; |
| 940 | } |
| 941 | if (rc) { |
| 942 | if (rc == -ENOMEM) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 943 | ibmphp_remove_bus(bus, func->busno); |
| 944 | kfree(amount_needed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | return rc; |
| 946 | } |
| 947 | retval = rc; |
| 948 | goto error; |
| 949 | } |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 950 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, PCI_IO_BASE, &io_base); |
| 951 | pci_bus_read_config_word(ibmphp_pci_bus, devfn, PCI_PREF_MEMORY_BASE, &pfmem_base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | |
| 953 | if ((io_base & PCI_IO_RANGE_TYPE_MASK) == PCI_IO_RANGE_TYPE_32) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 954 | debug("io 32\n"); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 955 | need_io_upper = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | } |
Jordan, William P | 88d69a1 | 2005-11-21 22:51:57 -0800 | [diff] [blame] | 957 | if ((pfmem_base & PCI_PREF_RANGE_TYPE_MASK) == PCI_PREF_RANGE_TYPE_64) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 958 | debug("pfmem 64\n"); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 959 | need_pfmem_upper = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | } |
| 961 | |
| 962 | if (bus->noIORanges) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 963 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_IO_BASE, 0x00 | bus->rangeIO->start >> 8); |
| 964 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_IO_LIMIT, 0x00 | bus->rangeIO->end >> 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | |
| 966 | /* _______________This is for debugging purposes only ____________________ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 967 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, PCI_IO_BASE, &temp); |
| 968 | debug("io_base = %x\n", (temp & PCI_IO_RANGE_TYPE_MASK) << 8); |
| 969 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, PCI_IO_LIMIT, &temp); |
| 970 | debug("io_limit = %x\n", (temp & PCI_IO_RANGE_TYPE_MASK) << 8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | ________________________________________________________________________*/ |
| 972 | |
| 973 | if (need_io_upper) { /* since can't support n.e.ways */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 974 | pci_bus_write_config_word(ibmphp_pci_bus, devfn, PCI_IO_BASE_UPPER16, 0x0000); |
| 975 | pci_bus_write_config_word(ibmphp_pci_bus, devfn, PCI_IO_LIMIT_UPPER16, 0x0000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | } |
| 977 | } else { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 978 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_IO_BASE, 0x00); |
| 979 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_IO_LIMIT, 0x00); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | } |
| 981 | |
| 982 | if (bus->noMemRanges) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 983 | pci_bus_write_config_word(ibmphp_pci_bus, devfn, PCI_MEMORY_BASE, 0x0000 | bus->rangeMem->start >> 16); |
| 984 | pci_bus_write_config_word(ibmphp_pci_bus, devfn, PCI_MEMORY_LIMIT, 0x0000 | bus->rangeMem->end >> 16); |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 985 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | /* ____________________This is for debugging purposes only ________________________ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 987 | pci_bus_read_config_word(ibmphp_pci_bus, devfn, PCI_MEMORY_BASE, &temp); |
| 988 | debug("mem_base = %x\n", (temp & PCI_MEMORY_RANGE_TYPE_MASK) << 16); |
| 989 | pci_bus_read_config_word(ibmphp_pci_bus, devfn, PCI_MEMORY_LIMIT, &temp); |
| 990 | debug("mem_limit = %x\n", (temp & PCI_MEMORY_RANGE_TYPE_MASK) << 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | __________________________________________________________________________________*/ |
| 992 | |
| 993 | } else { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 994 | pci_bus_write_config_word(ibmphp_pci_bus, devfn, PCI_MEMORY_BASE, 0xffff); |
| 995 | pci_bus_write_config_word(ibmphp_pci_bus, devfn, PCI_MEMORY_LIMIT, 0x0000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | } |
| 997 | if (bus->noPFMemRanges) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 998 | pci_bus_write_config_word(ibmphp_pci_bus, devfn, PCI_PREF_MEMORY_BASE, 0x0000 | bus->rangePFMem->start >> 16); |
| 999 | pci_bus_write_config_word(ibmphp_pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, 0x0000 | bus->rangePFMem->end >> 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | |
| 1001 | /* __________________________This is for debugging purposes only _______________________ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1002 | pci_bus_read_config_word(ibmphp_pci_bus, devfn, PCI_PREF_MEMORY_BASE, &temp); |
| 1003 | debug("pfmem_base = %x", (temp & PCI_MEMORY_RANGE_TYPE_MASK) << 16); |
| 1004 | pci_bus_read_config_word(ibmphp_pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, &temp); |
| 1005 | debug("pfmem_limit = %x\n", (temp & PCI_MEMORY_RANGE_TYPE_MASK) << 16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | ______________________________________________________________________________________*/ |
| 1007 | |
| 1008 | if (need_pfmem_upper) { /* since can't support n.e.ways */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1009 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, PCI_PREF_BASE_UPPER32, 0x00000000); |
| 1010 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, PCI_PREF_LIMIT_UPPER32, 0x00000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | } |
| 1012 | } else { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1013 | pci_bus_write_config_word(ibmphp_pci_bus, devfn, PCI_PREF_MEMORY_BASE, 0xffff); |
| 1014 | pci_bus_write_config_word(ibmphp_pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, 0x0000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | } |
| 1016 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1017 | debug("b4 writing control information\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1019 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, PCI_INTERRUPT_PIN, &irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | if ((irq > 0x00) && (irq < 0x05)) |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1021 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_INTERRUPT_LINE, func->irq[irq - 1]); |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 1022 | /* |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1023 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_BRIDGE_CONTROL, ctrl); |
| 1024 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_BRIDGE_CONTROL, PCI_BRIDGE_CTL_PARITY); |
| 1025 | pci_bus_write_config_byte(ibmphp_pci_bus, devfn, PCI_BRIDGE_CONTROL, PCI_BRIDGE_CTL_SERR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | */ |
| 1027 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1028 | pci_bus_write_config_word(ibmphp_pci_bus, devfn, PCI_COMMAND, DEVICEENABLE); |
| 1029 | pci_bus_write_config_word(ibmphp_pci_bus, devfn, PCI_BRIDGE_CONTROL, 0x07); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | for (i = 0; i < 32; i++) { |
| 1031 | if (amount_needed->devices[i]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1032 | debug("device where devices[i] is 1 = %x\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | func->devices[i] = 1; |
| 1034 | } |
| 1035 | } |
| 1036 | func->bus = 1; /* For unconfiguring, to indicate it's PPB */ |
| 1037 | func_passed = &func; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1038 | debug("func->busno b4 returning is %x\n", func->busno); |
| 1039 | debug("func->busno b4 returning in the other structure is %x\n", (*func_passed)->busno); |
| 1040 | kfree(amount_needed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | return 0; |
| 1042 | } else { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1043 | err("Configuring bridge was unsuccessful...\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | mem_tmp = NULL; |
| 1045 | retval = -EIO; |
| 1046 | goto error; |
| 1047 | } |
| 1048 | |
| 1049 | error: |
| 1050 | kfree(amount_needed); |
| 1051 | if (pfmem) |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1052 | ibmphp_remove_resource(pfmem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | if (io) |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1054 | ibmphp_remove_resource(io); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | if (mem) |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1056 | ibmphp_remove_resource(mem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | for (i = 0; i < 2; i++) { /* for 2 BARs */ |
| 1058 | if (bus_io[i]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1059 | ibmphp_remove_resource(bus_io[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | func->io[i] = NULL; |
| 1061 | } else if (bus_pfmem[i]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1062 | ibmphp_remove_resource(bus_pfmem[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | func->pfmem[i] = NULL; |
| 1064 | } else if (bus_mem[i]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1065 | ibmphp_remove_resource(bus_mem[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | func->mem[i] = NULL; |
| 1067 | } |
| 1068 | } |
| 1069 | return retval; |
| 1070 | } |
| 1071 | |
| 1072 | /***************************************************************************** |
| 1073 | * This function adds up the amount of resources needed behind the PPB bridge |
| 1074 | * and passes it to the configure_bridge function |
| 1075 | * Input: bridge function |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 1076 | * Output: amount of resources needed |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | *****************************************************************************/ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1078 | static struct res_needed *scan_behind_bridge(struct pci_func *func, u8 busno) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | { |
| 1080 | int count, len[6]; |
| 1081 | u16 vendor_id; |
| 1082 | u8 hdr_type; |
| 1083 | u8 device, function; |
| 1084 | unsigned int devfn; |
| 1085 | int howmany = 0; /*this is to see if there are any devices behind the bridge */ |
| 1086 | |
| 1087 | u32 bar[6], class; |
| 1088 | u32 address[] = { |
| 1089 | PCI_BASE_ADDRESS_0, |
| 1090 | PCI_BASE_ADDRESS_1, |
| 1091 | PCI_BASE_ADDRESS_2, |
| 1092 | PCI_BASE_ADDRESS_3, |
| 1093 | PCI_BASE_ADDRESS_4, |
| 1094 | PCI_BASE_ADDRESS_5, |
| 1095 | 0 |
| 1096 | }; |
| 1097 | struct res_needed *amount; |
| 1098 | |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 1099 | amount = kzalloc(sizeof(*amount), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1100 | if (amount == NULL) |
| 1101 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1102 | |
| 1103 | ibmphp_pci_bus->number = busno; |
| 1104 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1105 | debug("the bus_no behind the bridge is %x\n", busno); |
| 1106 | debug("scanning devices behind the bridge...\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1107 | for (device = 0; device < 32; device++) { |
| 1108 | amount->devices[device] = 0; |
| 1109 | for (function = 0; function < 8; function++) { |
| 1110 | devfn = PCI_DEVFN(device, function); |
| 1111 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1112 | pci_bus_read_config_word(ibmphp_pci_bus, devfn, PCI_VENDOR_ID, &vendor_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | |
| 1114 | if (vendor_id != PCI_VENDOR_ID_NOTVALID) { |
| 1115 | /* found correct device!!! */ |
| 1116 | howmany++; |
| 1117 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1118 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, PCI_HEADER_TYPE, &hdr_type); |
| 1119 | pci_bus_read_config_dword(ibmphp_pci_bus, devfn, PCI_CLASS_REVISION, &class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1121 | debug("hdr_type behind the bridge is %x\n", hdr_type); |
Bjorn Helgaas | 93de690 | 2015-12-03 13:18:18 -0600 | [diff] [blame] | 1122 | if ((hdr_type & 0x7f) == PCI_HEADER_TYPE_BRIDGE) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1123 | err("embedded bridges not supported for hot-plugging.\n"); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 1124 | amount->not_correct = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | return amount; |
| 1126 | } |
| 1127 | |
| 1128 | class >>= 8; /* to take revision out, class = class.subclass.prog i/f */ |
| 1129 | if (class == PCI_CLASS_NOT_DEFINED_VGA) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1130 | err("The device %x is VGA compatible and as is not supported for hot plugging. Please choose another device.\n", device); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 1131 | amount->not_correct = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1132 | return amount; |
| 1133 | } else if (class == PCI_CLASS_DISPLAY_VGA) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1134 | err("The device %x is not supported for hot plugging. Please choose another device.\n", device); |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 1135 | amount->not_correct = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | return amount; |
| 1137 | } |
| 1138 | |
| 1139 | amount->devices[device] = 1; |
| 1140 | |
| 1141 | for (count = 0; address[count]; count++) { |
| 1142 | /* for 6 BARs */ |
| 1143 | /* |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1144 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, address[count], &tmp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | if (tmp & 0x01) // IO |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1146 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], 0xFFFFFFFD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | else // MEMORY |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1148 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], 0xFFFFFFFF); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1150 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], 0xFFFFFFFF); |
| 1151 | pci_bus_read_config_dword(ibmphp_pci_bus, devfn, address[count], &bar[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1153 | debug("what is bar[count]? %x, count = %d\n", bar[count], count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | |
| 1155 | if (!bar[count]) /* This BAR is not implemented */ |
| 1156 | continue; |
| 1157 | |
| 1158 | //tmp_bar = bar[count]; |
| 1159 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1160 | debug("count %d device %x function %x wants %x resources\n", count, device, function, bar[count]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | |
| 1162 | if (bar[count] & PCI_BASE_ADDRESS_SPACE_IO) { |
| 1163 | /* This is IO */ |
| 1164 | len[count] = bar[count] & 0xFFFFFFFC; |
| 1165 | len[count] = ~len[count] + 1; |
| 1166 | amount->io += len[count]; |
| 1167 | } else { |
| 1168 | /* This is Memory */ |
| 1169 | if (bar[count] & PCI_BASE_ADDRESS_MEM_PREFETCH) { |
| 1170 | /* pfmem */ |
| 1171 | len[count] = bar[count] & 0xFFFFFFF0; |
| 1172 | len[count] = ~len[count] + 1; |
| 1173 | amount->pfmem += len[count]; |
| 1174 | if (bar[count] & PCI_BASE_ADDRESS_MEM_TYPE_64) |
| 1175 | /* takes up another dword */ |
| 1176 | count += 1; |
| 1177 | |
| 1178 | } else { |
| 1179 | /* regular memory */ |
| 1180 | len[count] = bar[count] & 0xFFFFFFF0; |
| 1181 | len[count] = ~len[count] + 1; |
| 1182 | amount->mem += len[count]; |
| 1183 | if (bar[count] & PCI_BASE_ADDRESS_MEM_TYPE_64) { |
| 1184 | /* takes up another dword */ |
| 1185 | count += 1; |
| 1186 | } |
| 1187 | } |
| 1188 | } |
| 1189 | } /* end for */ |
| 1190 | } /* end if (valid) */ |
| 1191 | } /* end for */ |
| 1192 | } /* end for */ |
| 1193 | |
| 1194 | if (!howmany) |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 1195 | amount->not_correct = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | else |
Kristen Accardi | dc6712d | 2006-03-14 16:24:47 -0800 | [diff] [blame] | 1197 | amount->not_correct = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1198 | if ((amount->io) && (amount->io < IOBRIDGE)) |
| 1199 | amount->io = IOBRIDGE; |
| 1200 | if ((amount->mem) && (amount->mem < MEMBRIDGE)) |
| 1201 | amount->mem = MEMBRIDGE; |
| 1202 | if ((amount->pfmem) && (amount->pfmem < MEMBRIDGE)) |
| 1203 | amount->pfmem = MEMBRIDGE; |
| 1204 | return amount; |
| 1205 | } |
| 1206 | |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 1207 | /* The following 3 unconfigure_boot_ routines deal with the case when we had the card |
| 1208 | * upon bootup in the system, since we don't allocate func to such case, we need to read |
| 1209 | * the start addresses from pci config space and then find the corresponding entries in |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | * our resource lists. The functions return either 0, -ENODEV, or -1 (general failure) |
| 1211 | * Change: we also call these functions even if we configured the card ourselves (i.e., not |
| 1212 | * the bootup case), since it should work same way |
| 1213 | */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1214 | static int unconfigure_boot_device(u8 busno, u8 device, u8 function) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | { |
| 1216 | u32 start_address; |
| 1217 | u32 address[] = { |
| 1218 | PCI_BASE_ADDRESS_0, |
| 1219 | PCI_BASE_ADDRESS_1, |
| 1220 | PCI_BASE_ADDRESS_2, |
| 1221 | PCI_BASE_ADDRESS_3, |
| 1222 | PCI_BASE_ADDRESS_4, |
| 1223 | PCI_BASE_ADDRESS_5, |
| 1224 | 0 |
| 1225 | }; |
| 1226 | int count; |
| 1227 | struct resource_node *io; |
| 1228 | struct resource_node *mem; |
| 1229 | struct resource_node *pfmem; |
| 1230 | struct bus_node *bus; |
| 1231 | u32 end_address; |
| 1232 | u32 temp_end; |
| 1233 | u32 size; |
| 1234 | u32 tmp_address; |
| 1235 | unsigned int devfn; |
| 1236 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1237 | debug("%s - enter\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1239 | bus = ibmphp_find_res_bus(busno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1240 | if (!bus) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1241 | debug("cannot find corresponding bus.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | return -EINVAL; |
| 1243 | } |
| 1244 | |
| 1245 | devfn = PCI_DEVFN(device, function); |
| 1246 | ibmphp_pci_bus->number = busno; |
| 1247 | for (count = 0; address[count]; count++) { /* for 6 BARs */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1248 | pci_bus_read_config_dword(ibmphp_pci_bus, devfn, address[count], &start_address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | |
| 1250 | /* We can do this here, b/c by that time the device driver of the card has been stopped */ |
| 1251 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1252 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], 0xFFFFFFFF); |
| 1253 | pci_bus_read_config_dword(ibmphp_pci_bus, devfn, address[count], &size); |
| 1254 | pci_bus_write_config_dword(ibmphp_pci_bus, devfn, address[count], start_address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1255 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1256 | debug("start_address is %x\n", start_address); |
| 1257 | debug("busno, device, function %x %x %x\n", busno, device, function); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | if (!size) { |
| 1259 | /* This BAR is not implemented */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1260 | debug("is this bar no implemented?, count = %d\n", count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | continue; |
| 1262 | } |
| 1263 | tmp_address = start_address; |
| 1264 | if (start_address & PCI_BASE_ADDRESS_SPACE_IO) { |
| 1265 | /* This is IO */ |
| 1266 | start_address &= PCI_BASE_ADDRESS_IO_MASK; |
| 1267 | size = size & 0xFFFFFFFC; |
| 1268 | size = ~size + 1; |
| 1269 | end_address = start_address + size - 1; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1270 | if (ibmphp_find_resource(bus, start_address, &io, IO) < 0) { |
| 1271 | err("cannot find corresponding IO resource to remove\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | return -EIO; |
| 1273 | } |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1274 | debug("io->start = %x\n", io->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1275 | temp_end = io->end; |
| 1276 | start_address = io->end + 1; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1277 | ibmphp_remove_resource(io); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1278 | /* This is needed b/c of the old I/O restrictions in the BIOS */ |
| 1279 | while (temp_end < end_address) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1280 | if (ibmphp_find_resource(bus, start_address, &io, IO) < 0) { |
| 1281 | err("cannot find corresponding IO resource to remove\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1282 | return -EIO; |
| 1283 | } |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1284 | debug("io->start = %x\n", io->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | temp_end = io->end; |
| 1286 | start_address = io->end + 1; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1287 | ibmphp_remove_resource(io); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1288 | } |
| 1289 | |
| 1290 | /* ????????? DO WE NEED TO WRITE ANYTHING INTO THE PCI CONFIG SPACE BACK ?????????? */ |
| 1291 | } else { |
| 1292 | /* This is Memory */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1293 | if (start_address & PCI_BASE_ADDRESS_MEM_PREFETCH) { |
| 1294 | /* pfmem */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1295 | debug("start address of pfmem is %x\n", start_address); |
Rolf Eike Beer | 034ecc7 | 2005-04-11 15:01:54 +0200 | [diff] [blame] | 1296 | start_address &= PCI_BASE_ADDRESS_MEM_MASK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1298 | if (ibmphp_find_resource(bus, start_address, &pfmem, PFMEM) < 0) { |
| 1299 | err("cannot find corresponding PFMEM resource to remove\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1300 | return -EIO; |
| 1301 | } |
| 1302 | if (pfmem) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1303 | debug("pfmem->start = %x\n", pfmem->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1304 | |
| 1305 | ibmphp_remove_resource(pfmem); |
| 1306 | } |
| 1307 | } else { |
| 1308 | /* regular memory */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1309 | debug("start address of mem is %x\n", start_address); |
Rolf Eike Beer | 034ecc7 | 2005-04-11 15:01:54 +0200 | [diff] [blame] | 1310 | start_address &= PCI_BASE_ADDRESS_MEM_MASK; |
| 1311 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1312 | if (ibmphp_find_resource(bus, start_address, &mem, MEM) < 0) { |
| 1313 | err("cannot find corresponding MEM resource to remove\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | return -EIO; |
| 1315 | } |
| 1316 | if (mem) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1317 | debug("mem->start = %x\n", mem->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1318 | |
| 1319 | ibmphp_remove_resource(mem); |
| 1320 | } |
| 1321 | } |
| 1322 | if (tmp_address & PCI_BASE_ADDRESS_MEM_TYPE_64) { |
| 1323 | /* takes up another dword */ |
| 1324 | count += 1; |
| 1325 | } |
| 1326 | } /* end of mem */ |
| 1327 | } /* end of for */ |
| 1328 | |
| 1329 | return 0; |
| 1330 | } |
| 1331 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1332 | static int unconfigure_boot_bridge(u8 busno, u8 device, u8 function) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | { |
| 1334 | int count; |
| 1335 | int bus_no, pri_no, sub_no, sec_no = 0; |
| 1336 | u32 start_address, tmp_address; |
| 1337 | u8 sec_number, sub_number, pri_number; |
| 1338 | struct resource_node *io = NULL; |
| 1339 | struct resource_node *mem = NULL; |
| 1340 | struct resource_node *pfmem = NULL; |
| 1341 | struct bus_node *bus; |
| 1342 | u32 address[] = { |
| 1343 | PCI_BASE_ADDRESS_0, |
| 1344 | PCI_BASE_ADDRESS_1, |
| 1345 | 0 |
| 1346 | }; |
| 1347 | unsigned int devfn; |
| 1348 | |
| 1349 | devfn = PCI_DEVFN(device, function); |
| 1350 | ibmphp_pci_bus->number = busno; |
| 1351 | bus_no = (int) busno; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1352 | debug("busno is %x\n", busno); |
| 1353 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, PCI_PRIMARY_BUS, &pri_number); |
| 1354 | debug("%s - busno = %x, primary_number = %x\n", __func__, busno, pri_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1355 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1356 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, PCI_SECONDARY_BUS, &sec_number); |
| 1357 | debug("sec_number is %x\n", sec_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1358 | sec_no = (int) sec_number; |
| 1359 | pri_no = (int) pri_number; |
| 1360 | if (pri_no != bus_no) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1361 | err("primary numbers in our structures and pci config space don't match.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1362 | return -EINVAL; |
| 1363 | } |
| 1364 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1365 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, PCI_SUBORDINATE_BUS, &sub_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1366 | sub_no = (int) sub_number; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1367 | debug("sub_no is %d, sec_no is %d\n", sub_no, sec_no); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | if (sec_no != sub_number) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1369 | err("there're more buses behind this bridge. Hot removal is not supported. Please choose another card\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1370 | return -ENODEV; |
| 1371 | } |
| 1372 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1373 | bus = ibmphp_find_res_bus(sec_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1374 | if (!bus) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1375 | err("cannot find Bus structure for the bridged device\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | return -EINVAL; |
| 1377 | } |
Adrian Bunk | b0d974e | 2006-11-17 02:19:25 +0100 | [diff] [blame] | 1378 | debug("bus->busno is %x\n", bus->busno); |
| 1379 | debug("sec_number is %x\n", sec_number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1381 | ibmphp_remove_bus(bus, busno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | |
| 1383 | for (count = 0; address[count]; count++) { |
| 1384 | /* for 2 BARs */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1385 | pci_bus_read_config_dword(ibmphp_pci_bus, devfn, address[count], &start_address); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | |
| 1387 | if (!start_address) { |
| 1388 | /* This BAR is not implemented */ |
| 1389 | continue; |
| 1390 | } |
| 1391 | |
| 1392 | tmp_address = start_address; |
| 1393 | |
| 1394 | if (start_address & PCI_BASE_ADDRESS_SPACE_IO) { |
| 1395 | /* This is IO */ |
| 1396 | start_address &= PCI_BASE_ADDRESS_IO_MASK; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1397 | if (ibmphp_find_resource(bus, start_address, &io, IO) < 0) { |
| 1398 | err("cannot find corresponding IO resource to remove\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1399 | return -EIO; |
| 1400 | } |
| 1401 | if (io) |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1402 | debug("io->start = %x\n", io->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1404 | ibmphp_remove_resource(io); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | |
| 1406 | /* ????????? DO WE NEED TO WRITE ANYTHING INTO THE PCI CONFIG SPACE BACK ?????????? */ |
| 1407 | } else { |
| 1408 | /* This is Memory */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1409 | if (start_address & PCI_BASE_ADDRESS_MEM_PREFETCH) { |
| 1410 | /* pfmem */ |
Rolf Eike Beer | 034ecc7 | 2005-04-11 15:01:54 +0200 | [diff] [blame] | 1411 | start_address &= PCI_BASE_ADDRESS_MEM_MASK; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1412 | if (ibmphp_find_resource(bus, start_address, &pfmem, PFMEM) < 0) { |
| 1413 | err("cannot find corresponding PFMEM resource to remove\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1414 | return -EINVAL; |
| 1415 | } |
| 1416 | if (pfmem) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1417 | debug("pfmem->start = %x\n", pfmem->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | |
| 1419 | ibmphp_remove_resource(pfmem); |
| 1420 | } |
| 1421 | } else { |
| 1422 | /* regular memory */ |
Rolf Eike Beer | 034ecc7 | 2005-04-11 15:01:54 +0200 | [diff] [blame] | 1423 | start_address &= PCI_BASE_ADDRESS_MEM_MASK; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1424 | if (ibmphp_find_resource(bus, start_address, &mem, MEM) < 0) { |
| 1425 | err("cannot find corresponding MEM resource to remove\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1426 | return -EINVAL; |
| 1427 | } |
| 1428 | if (mem) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1429 | debug("mem->start = %x\n", mem->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1430 | |
| 1431 | ibmphp_remove_resource(mem); |
| 1432 | } |
| 1433 | } |
| 1434 | if (tmp_address & PCI_BASE_ADDRESS_MEM_TYPE_64) { |
| 1435 | /* takes up another dword */ |
| 1436 | count += 1; |
| 1437 | } |
| 1438 | } /* end of mem */ |
| 1439 | } /* end of for */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1440 | debug("%s - exiting, returning success\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | return 0; |
| 1442 | } |
| 1443 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1444 | static int unconfigure_boot_card(struct slot *slot_cur) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | { |
| 1446 | u16 vendor_id; |
| 1447 | u32 class; |
| 1448 | u8 hdr_type; |
| 1449 | u8 device; |
| 1450 | u8 busno; |
| 1451 | u8 function; |
| 1452 | int rc; |
| 1453 | unsigned int devfn; |
| 1454 | u8 valid_device = 0x00; /* To see if we are ever able to find valid device and read it */ |
| 1455 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1456 | debug("%s - enter\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | |
| 1458 | device = slot_cur->device; |
| 1459 | busno = slot_cur->bus; |
| 1460 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1461 | debug("b4 for loop, device is %x\n", device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1462 | /* For every function on the card */ |
| 1463 | for (function = 0x0; function < 0x08; function++) { |
| 1464 | devfn = PCI_DEVFN(device, function); |
| 1465 | ibmphp_pci_bus->number = busno; |
| 1466 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1467 | pci_bus_read_config_word(ibmphp_pci_bus, devfn, PCI_VENDOR_ID, &vendor_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1468 | |
| 1469 | if (vendor_id != PCI_VENDOR_ID_NOTVALID) { |
| 1470 | /* found correct device!!! */ |
| 1471 | ++valid_device; |
| 1472 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1473 | debug("%s - found correct device\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1474 | |
| 1475 | /* header: x x x x x x x x |
| 1476 | * | |___________|=> 1=PPB bridge, 0=normal device, 2=CardBus Bridge |
| 1477 | * |_=> 0 = single function device, 1 = multi-function device |
| 1478 | */ |
| 1479 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1480 | pci_bus_read_config_byte(ibmphp_pci_bus, devfn, PCI_HEADER_TYPE, &hdr_type); |
| 1481 | pci_bus_read_config_dword(ibmphp_pci_bus, devfn, PCI_CLASS_REVISION, &class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1483 | debug("hdr_type %x, class %x\n", hdr_type, class); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1484 | class >>= 8; /* to take revision out, class = class.subclass.prog i/f */ |
| 1485 | if (class == PCI_CLASS_NOT_DEFINED_VGA) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1486 | err("The device %x function %x is VGA compatible and is not supported for hot removing. Please choose another device.\n", device, function); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | return -ENODEV; |
| 1488 | } else if (class == PCI_CLASS_DISPLAY_VGA) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1489 | err("The device %x function %x is not supported for hot removing. Please choose another device.\n", device, function); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | return -ENODEV; |
| 1491 | } |
| 1492 | |
| 1493 | switch (hdr_type) { |
| 1494 | case PCI_HEADER_TYPE_NORMAL: |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1495 | rc = unconfigure_boot_device(busno, device, function); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1496 | if (rc) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1497 | err("was not able to unconfigure device %x func %x on bus %x. bailing out...\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1498 | device, function, busno); |
| 1499 | return rc; |
| 1500 | } |
| 1501 | function = 0x8; |
| 1502 | break; |
| 1503 | case PCI_HEADER_TYPE_MULTIDEVICE: |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1504 | rc = unconfigure_boot_device(busno, device, function); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | if (rc) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1506 | err("was not able to unconfigure device %x func %x on bus %x. bailing out...\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | device, function, busno); |
| 1508 | return rc; |
| 1509 | } |
| 1510 | break; |
| 1511 | case PCI_HEADER_TYPE_BRIDGE: |
| 1512 | class >>= 8; |
| 1513 | if (class != PCI_CLASS_BRIDGE_PCI) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1514 | err("This device %x function %x is not PCI-to-PCI bridge, and is not supported for hot-removing. Please try another card.\n", device, function); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | return -ENODEV; |
| 1516 | } |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1517 | rc = unconfigure_boot_bridge(busno, device, function); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1518 | if (rc != 0) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1519 | err("was not able to hot-remove PPB properly.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1520 | return rc; |
| 1521 | } |
| 1522 | |
| 1523 | function = 0x8; |
| 1524 | break; |
| 1525 | case PCI_HEADER_TYPE_MULTIBRIDGE: |
| 1526 | class >>= 8; |
| 1527 | if (class != PCI_CLASS_BRIDGE_PCI) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1528 | err("This device %x function %x is not PCI-to-PCI bridge, and is not supported for hot-removing. Please try another card.\n", device, function); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1529 | return -ENODEV; |
| 1530 | } |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1531 | rc = unconfigure_boot_bridge(busno, device, function); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1532 | if (rc != 0) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1533 | err("was not able to hot-remove PPB properly.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | return rc; |
| 1535 | } |
| 1536 | break; |
| 1537 | default: |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1538 | err("MAJOR PROBLEM!!!! Cannot read device's header\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1539 | return -1; |
| 1540 | break; |
| 1541 | } /* end of switch */ |
| 1542 | } /* end of valid device */ |
| 1543 | } /* end of for */ |
| 1544 | |
| 1545 | if (!valid_device) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1546 | err("Could not find device to unconfigure. Or could not read the card.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1547 | return -1; |
| 1548 | } |
| 1549 | return 0; |
| 1550 | } |
| 1551 | |
| 1552 | /* |
| 1553 | * free the resources of the card (multi, single, or bridged) |
| 1554 | * Parameters: slot, flag to say if this is for removing entire module or just |
| 1555 | * unconfiguring the device |
| 1556 | * TO DO: will probably need to add some code in case there was some resource, |
| 1557 | * to remove it... this is from when we have errors in the configure_card... |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 1558 | * !!!!!!!!!!!!!!!!!!!!!!!!!FOR BUSES!!!!!!!!!!!! |
| 1559 | * Returns: 0, -1, -ENODEV |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1561 | int ibmphp_unconfigure_card(struct slot **slot_cur, int the_end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | { |
| 1563 | int i; |
| 1564 | int count; |
| 1565 | int rc; |
| 1566 | struct slot *sl = *slot_cur; |
| 1567 | struct pci_func *cur_func = NULL; |
| 1568 | struct pci_func *temp_func; |
| 1569 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1570 | debug("%s - enter\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | |
| 1572 | if (!the_end) { |
| 1573 | /* Need to unconfigure the card */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1574 | rc = unconfigure_boot_card(sl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | if ((rc == -ENODEV) || (rc == -EIO) || (rc == -EINVAL)) { |
| 1576 | /* In all other cases, will still need to get rid of func structure if it exists */ |
| 1577 | return rc; |
| 1578 | } |
| 1579 | } |
| 1580 | |
| 1581 | if (sl->func) { |
| 1582 | cur_func = sl->func; |
| 1583 | while (cur_func) { |
| 1584 | /* TO DO: WILL MOST LIKELY NEED TO GET RID OF THE BUS STRUCTURE FROM RESOURCES AS WELL */ |
| 1585 | if (cur_func->bus) { |
| 1586 | /* in other words, it's a PPB */ |
| 1587 | count = 2; |
| 1588 | } else { |
| 1589 | count = 6; |
| 1590 | } |
| 1591 | |
| 1592 | for (i = 0; i < count; i++) { |
| 1593 | if (cur_func->io[i]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1594 | debug("io[%d] exists\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | if (the_end > 0) |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1596 | ibmphp_remove_resource(cur_func->io[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1597 | cur_func->io[i] = NULL; |
| 1598 | } |
| 1599 | if (cur_func->mem[i]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1600 | debug("mem[%d] exists\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1601 | if (the_end > 0) |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1602 | ibmphp_remove_resource(cur_func->mem[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1603 | cur_func->mem[i] = NULL; |
| 1604 | } |
| 1605 | if (cur_func->pfmem[i]) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1606 | debug("pfmem[%d] exists\n", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | if (the_end > 0) |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1608 | ibmphp_remove_resource(cur_func->pfmem[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1609 | cur_func->pfmem[i] = NULL; |
| 1610 | } |
| 1611 | } |
| 1612 | |
| 1613 | temp_func = cur_func->next; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1614 | kfree(cur_func); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | cur_func = temp_func; |
| 1616 | } |
| 1617 | } |
| 1618 | |
| 1619 | sl->func = NULL; |
| 1620 | *slot_cur = sl; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1621 | debug("%s - exit\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1622 | return 0; |
| 1623 | } |
| 1624 | |
| 1625 | /* |
| 1626 | * add a new bus resulting from hot-plugging a PPB bridge with devices |
| 1627 | * |
| 1628 | * Input: bus and the amount of resources needed (we know we can assign those, |
| 1629 | * since they've been checked already |
| 1630 | * Output: bus added to the correct spot |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 1631 | * 0, -1, error |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1632 | */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1633 | static int add_new_bus(struct bus_node *bus, struct resource_node *io, struct resource_node *mem, struct resource_node *pfmem, u8 parent_busno) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1634 | { |
| 1635 | struct range_node *io_range = NULL; |
| 1636 | struct range_node *mem_range = NULL; |
| 1637 | struct range_node *pfmem_range = NULL; |
| 1638 | struct bus_node *cur_bus = NULL; |
| 1639 | |
| 1640 | /* Trying to find the parent bus number */ |
| 1641 | if (parent_busno != 0xFF) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1642 | cur_bus = ibmphp_find_res_bus(parent_busno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | if (!cur_bus) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1644 | err("strange, cannot find bus which is supposed to be at the system... something is terribly wrong...\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1645 | return -ENODEV; |
| 1646 | } |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 1647 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1648 | list_add(&bus->bus_list, &cur_bus->bus_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1649 | } |
| 1650 | if (io) { |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 1651 | io_range = kzalloc(sizeof(*io_range), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | if (!io_range) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1653 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1654 | return -ENOMEM; |
| 1655 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1656 | io_range->start = io->start; |
| 1657 | io_range->end = io->end; |
| 1658 | io_range->rangeno = 1; |
| 1659 | bus->noIORanges = 1; |
| 1660 | bus->rangeIO = io_range; |
| 1661 | } |
| 1662 | if (mem) { |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 1663 | mem_range = kzalloc(sizeof(*mem_range), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1664 | if (!mem_range) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1665 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1666 | return -ENOMEM; |
| 1667 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1668 | mem_range->start = mem->start; |
| 1669 | mem_range->end = mem->end; |
| 1670 | mem_range->rangeno = 1; |
| 1671 | bus->noMemRanges = 1; |
| 1672 | bus->rangeMem = mem_range; |
| 1673 | } |
| 1674 | if (pfmem) { |
Eric Sesterhenn | f5afe80 | 2006-02-28 15:34:49 +0100 | [diff] [blame] | 1675 | pfmem_range = kzalloc(sizeof(*pfmem_range), GFP_KERNEL); |
Bjorn Helgaas | f762598 | 2013-11-14 11:28:18 -0700 | [diff] [blame] | 1676 | if (!pfmem_range) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1677 | err("out of system memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1678 | return -ENOMEM; |
| 1679 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1680 | pfmem_range->start = pfmem->start; |
| 1681 | pfmem_range->end = pfmem->end; |
| 1682 | pfmem_range->rangeno = 1; |
| 1683 | bus->noPFMemRanges = 1; |
| 1684 | bus->rangePFMem = pfmem_range; |
| 1685 | } |
| 1686 | return 0; |
| 1687 | } |
| 1688 | |
| 1689 | /* |
| 1690 | * find the 1st available bus number for PPB to set as its secondary bus |
| 1691 | * Parameters: bus_number of the primary bus |
| 1692 | * Returns: bus_number of the secondary bus or 0xff in case of failure |
| 1693 | */ |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1694 | static u8 find_sec_number(u8 primary_busno, u8 slotno) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | { |
| 1696 | int min, max; |
| 1697 | u8 busno; |
| 1698 | struct bus_info *bus; |
| 1699 | struct bus_node *bus_cur; |
| 1700 | |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1701 | bus = ibmphp_find_same_bus_num(primary_busno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1702 | if (!bus) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1703 | err("cannot get slot range of the bus from the BIOS\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1704 | return 0xff; |
| 1705 | } |
| 1706 | max = bus->slot_max; |
| 1707 | min = bus->slot_min; |
| 1708 | if ((slotno > max) || (slotno < min)) { |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1709 | err("got the wrong range\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1710 | return 0xff; |
| 1711 | } |
| 1712 | busno = (u8) (slotno - (u8) min); |
| 1713 | busno += primary_busno + 0x01; |
Bogicevic Sasa | ff3ce48 | 2015-12-27 13:21:11 -0800 | [diff] [blame] | 1714 | bus_cur = ibmphp_find_res_bus(busno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1715 | /* either there is no such bus number, or there are no ranges, which |
| 1716 | * can only happen if we removed the bridged device in previous load |
| 1717 | * of the driver, and now only have the skeleton bus struct |
| 1718 | */ |
| 1719 | if ((!bus_cur) || (!(bus_cur->rangeIO) && !(bus_cur->rangeMem) && !(bus_cur->rangePFMem))) |
| 1720 | return busno; |
| 1721 | return 0xff; |
| 1722 | } |