| 1 |
62 |
marcus.erl |
/*
|
| 2 |
|
|
* IBM Hot Plug Controller Driver
|
| 3 |
|
|
*
|
| 4 |
|
|
* Written By: Irene Zubarev, IBM Corporation
|
| 5 |
|
|
*
|
| 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);
|
| 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);
|
| 42 |
|
|
|
| 43 |
|
|
/*
|
| 44 |
|
|
* NOTE..... If BIOS doesn't provide default routing, we assign:
|
| 45 |
|
|
* 9 for SCSI, 10 for LAN adapters, and 11 for everything else.
|
| 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 |
|
|
*/
|
| 50 |
|
|
static void assign_alt_irq (struct pci_func * cur_func, u8 class_code)
|
| 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
|
| 74 |
|
|
*
|
| 75 |
|
|
* Input: function to be added
|
| 76 |
|
|
*
|
| 77 |
|
|
* TO DO: The error case with Multifunction device or multi function bridge,
|
| 78 |
|
|
* if there is an error, will need to go through all previous functions and
|
| 79 |
|
|
* unconfigure....or can add some code into unconfigure_card....
|
| 80 |
|
|
*/
|
| 81 |
|
|
int ibmphp_configure_card (struct pci_func *func, u8 slotno)
|
| 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 |
|
|
|
| 95 |
|
|
debug ("inside configure_card, func->busno = %x\n", func->busno);
|
| 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,
|
| 101 |
|
|
* func->busno is correct, and func->device contains only device (at the 5
|
| 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 |
|
|
|
| 112 |
|
|
debug ("inside the loop, cur_func->busno = %x, cur_func->device = %x, cur_func->funcion = %x\n",
|
| 113 |
|
|
cur_func->busno, cur_func->device, cur_func->function);
|
| 114 |
|
|
|
| 115 |
|
|
pci_bus_read_config_word (ibmphp_pci_bus, devfn, PCI_VENDOR_ID, &vendor_id);
|
| 116 |
|
|
|
| 117 |
|
|
debug ("vendor_id is %x\n", vendor_id);
|
| 118 |
|
|
if (vendor_id != PCI_VENDOR_ID_NOTVALID) {
|
| 119 |
|
|
/* found correct device!!! */
|
| 120 |
|
|
debug ("found valid device, vendor_id = %x\n", vendor_id);
|
| 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 |
|
|
|
| 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);
|
| 131 |
|
|
|
| 132 |
|
|
class_code = class >> 24;
|
| 133 |
|
|
debug ("hrd_type = %x, class = %x, class_code %x\n", hdr_type, class, class_code);
|
| 134 |
|
|
class >>= 8; /* to take revision out, class = class.subclass.prog i/f */
|
| 135 |
|
|
if (class == PCI_CLASS_NOT_DEFINED_VGA) {
|
| 136 |
|
|
err ("The device %x is VGA compatible and as is not supported for hot plugging. "
|
| 137 |
|
|
"Please choose another device.\n", cur_func->device);
|
| 138 |
|
|
return -ENODEV;
|
| 139 |
|
|
} else if (class == PCI_CLASS_DISPLAY_VGA) {
|
| 140 |
|
|
err ("The device %x is not supported for hot plugging. "
|
| 141 |
|
|
"Please choose another device.\n", cur_func->device);
|
| 142 |
|
|
return -ENODEV;
|
| 143 |
|
|
}
|
| 144 |
|
|
switch (hdr_type) {
|
| 145 |
|
|
case PCI_HEADER_TYPE_NORMAL:
|
| 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);
|
| 148 |
|
|
if ((rc = configure_device (cur_func)) < 0) {
|
| 149 |
|
|
/* We need to do this in case some other BARs were properly inserted */
|
| 150 |
|
|
err ("was not able to configure devfunc %x on bus %x.\n",
|
| 151 |
|
|
cur_func->device, cur_func->busno);
|
| 152 |
|
|
cleanup_count = 6;
|
| 153 |
|
|
goto error;
|
| 154 |
|
|
}
|
| 155 |
|
|
cur_func->next = NULL;
|
| 156 |
|
|
function = 0x8;
|
| 157 |
|
|
break;
|
| 158 |
|
|
case PCI_HEADER_TYPE_MULTIDEVICE:
|
| 159 |
|
|
assign_alt_irq (cur_func, class_code);
|
| 160 |
|
|
if ((rc = configure_device (cur_func)) < 0) {
|
| 161 |
|
|
/* We need to do this in case some other BARs were properly inserted */
|
| 162 |
|
|
err ("was not able to configure devfunc %x on bus %x...bailing out\n",
|
| 163 |
|
|
cur_func->device, cur_func->busno);
|
| 164 |
|
|
cleanup_count = 6;
|
| 165 |
|
|
goto error;
|
| 166 |
|
|
}
|
| 167 |
|
|
newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL);
|
| 168 |
|
|
if (!newfunc) {
|
| 169 |
|
|
err ("out of system memory\n");
|
| 170 |
|
|
return -ENOMEM;
|
| 171 |
|
|
}
|
| 172 |
|
|
newfunc->busno = cur_func->busno;
|
| 173 |
|
|
newfunc->device = device;
|
| 174 |
|
|
cur_func->next = newfunc;
|
| 175 |
|
|
cur_func = newfunc;
|
| 176 |
|
|
for (j = 0; j < 4; j++)
|
| 177 |
|
|
newfunc->irq[j] = cur_func->irq[j];
|
| 178 |
|
|
break;
|
| 179 |
|
|
case PCI_HEADER_TYPE_MULTIBRIDGE:
|
| 180 |
|
|
class >>= 8;
|
| 181 |
|
|
if (class != PCI_CLASS_BRIDGE_PCI) {
|
| 182 |
|
|
err ("This %x is not PCI-to-PCI bridge, and as is not supported for hot-plugging. "
|
| 183 |
|
|
"Please insert another card.\n", cur_func->device);
|
| 184 |
|
|
return -ENODEV;
|
| 185 |
|
|
}
|
| 186 |
|
|
assign_alt_irq (cur_func, class_code);
|
| 187 |
|
|
rc = configure_bridge (&cur_func, slotno);
|
| 188 |
|
|
if (rc == -ENODEV) {
|
| 189 |
|
|
err ("You chose to insert Single Bridge, or nested bridges, this is not supported...\n");
|
| 190 |
|
|
err ("Bus %x, devfunc %x\n", cur_func->busno, cur_func->device);
|
| 191 |
|
|
return rc;
|
| 192 |
|
|
}
|
| 193 |
|
|
if (rc) {
|
| 194 |
|
|
/* We need to do this in case some other BARs were properly inserted */
|
| 195 |
|
|
err ("was not able to hot-add PPB properly.\n");
|
| 196 |
|
|
func->bus = 1; /* To indicate to the unconfigure function that this is a PPB */
|
| 197 |
|
|
cleanup_count = 2;
|
| 198 |
|
|
goto error;
|
| 199 |
|
|
}
|
| 200 |
|
|
|
| 201 |
|
|
pci_bus_read_config_byte (ibmphp_pci_bus, devfn, PCI_SECONDARY_BUS, &sec_number);
|
| 202 |
|
|
flag = 0;
|
| 203 |
|
|
for (i = 0; i < 32; i++) {
|
| 204 |
|
|
if (func->devices[i]) {
|
| 205 |
|
|
newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL);
|
| 206 |
|
|
if (!newfunc) {
|
| 207 |
|
|
err ("out of system memory\n");
|
| 208 |
|
|
return -ENOMEM;
|
| 209 |
|
|
}
|
| 210 |
|
|
newfunc->busno = sec_number;
|
| 211 |
|
|
newfunc->device = (u8) i;
|
| 212 |
|
|
for (j = 0; j < 4; j++)
|
| 213 |
|
|
newfunc->irq[j] = cur_func->irq[j];
|
| 214 |
|
|
|
| 215 |
|
|
if (flag) {
|
| 216 |
|
|
for (prev_func = cur_func; prev_func->next; prev_func = prev_func->next) ;
|
| 217 |
|
|
prev_func->next = newfunc;
|
| 218 |
|
|
} else
|
| 219 |
|
|
cur_func->next = newfunc;
|
| 220 |
|
|
|
| 221 |
|
|
rc = ibmphp_configure_card (newfunc, slotno);
|
| 222 |
|
|
/* This could only happen if kmalloc failed */
|
| 223 |
|
|
if (rc) {
|
| 224 |
|
|
/* We need to do this in case bridge itself got configured properly, but devices behind it failed */
|
| 225 |
|
|
func->bus = 1; /* To indicate to the unconfigure function that this is a PPB */
|
| 226 |
|
|
cleanup_count = 2;
|
| 227 |
|
|
goto error;
|
| 228 |
|
|
}
|
| 229 |
|
|
flag = 1;
|
| 230 |
|
|
}
|
| 231 |
|
|
}
|
| 232 |
|
|
|
| 233 |
|
|
newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL);
|
| 234 |
|
|
if (!newfunc) {
|
| 235 |
|
|
err ("out of system memory\n");
|
| 236 |
|
|
return -ENOMEM;
|
| 237 |
|
|
}
|
| 238 |
|
|
newfunc->busno = cur_func->busno;
|
| 239 |
|
|
newfunc->device = device;
|
| 240 |
|
|
for (j = 0; j < 4; j++)
|
| 241 |
|
|
newfunc->irq[j] = cur_func->irq[j];
|
| 242 |
|
|
for (prev_func = cur_func; prev_func->next; prev_func = prev_func->next) ;
|
| 243 |
|
|
prev_func->next = newfunc;
|
| 244 |
|
|
cur_func = newfunc;
|
| 245 |
|
|
break;
|
| 246 |
|
|
case PCI_HEADER_TYPE_BRIDGE:
|
| 247 |
|
|
class >>= 8;
|
| 248 |
|
|
debug ("class now is %x\n", class);
|
| 249 |
|
|
if (class != PCI_CLASS_BRIDGE_PCI) {
|
| 250 |
|
|
err ("This %x is not PCI-to-PCI bridge, and as is not supported for hot-plugging. "
|
| 251 |
|
|
"Please insert another card.\n", cur_func->device);
|
| 252 |
|
|
return -ENODEV;
|
| 253 |
|
|
}
|
| 254 |
|
|
|
| 255 |
|
|
assign_alt_irq (cur_func, class_code);
|
| 256 |
|
|
|
| 257 |
|
|
debug ("cur_func->busno b4 configure_bridge is %x\n", cur_func->busno);
|
| 258 |
|
|
rc = configure_bridge (&cur_func, slotno);
|
| 259 |
|
|
if (rc == -ENODEV) {
|
| 260 |
|
|
err ("You chose to insert Single Bridge, or nested bridges, this is not supported...\n");
|
| 261 |
|
|
err ("Bus %x, devfunc %x\n", cur_func->busno, cur_func->device);
|
| 262 |
|
|
return rc;
|
| 263 |
|
|
}
|
| 264 |
|
|
if (rc) {
|
| 265 |
|
|
/* We need to do this in case some other BARs were properly inserted */
|
| 266 |
|
|
func->bus = 1; /* To indicate to the unconfigure function that this is a PPB */
|
| 267 |
|
|
err ("was not able to hot-add PPB properly.\n");
|
| 268 |
|
|
cleanup_count = 2;
|
| 269 |
|
|
goto error;
|
| 270 |
|
|
}
|
| 271 |
|
|
debug ("cur_func->busno = %x, device = %x, function = %x\n",
|
| 272 |
|
|
cur_func->busno, device, function);
|
| 273 |
|
|
pci_bus_read_config_byte (ibmphp_pci_bus, devfn, PCI_SECONDARY_BUS, &sec_number);
|
| 274 |
|
|
debug ("after configuring bridge..., sec_number = %x\n", sec_number);
|
| 275 |
|
|
flag = 0;
|
| 276 |
|
|
for (i = 0; i < 32; i++) {
|
| 277 |
|
|
if (func->devices[i]) {
|
| 278 |
|
|
debug ("inside for loop, device is %x\n", i);
|
| 279 |
|
|
newfunc = kzalloc(sizeof(*newfunc), GFP_KERNEL);
|
| 280 |
|
|
if (!newfunc) {
|
| 281 |
|
|
err (" out of system memory\n");
|
| 282 |
|
|
return -ENOMEM;
|
| 283 |
|
|
}
|
| 284 |
|
|
newfunc->busno = sec_number;
|
| 285 |
|
|
newfunc->device = (u8) i;
|
| 286 |
|
|
for (j = 0; j < 4; j++)
|
| 287 |
|
|
newfunc->irq[j] = cur_func->irq[j];
|
| 288 |
|
|
|
| 289 |
|
|
if (flag) {
|
| 290 |
|
|
for (prev_func = cur_func; prev_func->next; prev_func = prev_func->next) ;
|
| 291 |
|
|
prev_func->next = newfunc;
|
| 292 |
|
|
} else
|
| 293 |
|
|
cur_func->next = newfunc;
|
| 294 |
|
|
|
| 295 |
|
|
rc = ibmphp_configure_card (newfunc, slotno);
|
| 296 |
|
|
|
| 297 |
|
|
/* Again, this case should not happen... For complete paranoia, will need to call remove_bus */
|
| 298 |
|
|
if (rc) {
|
| 299 |
|
|
/* We need to do this in case some other BARs were properly inserted */
|
| 300 |
|
|
func->bus = 1; /* To indicate to the unconfigure function that this is a PPB */
|
| 301 |
|
|
cleanup_count = 2;
|
| 302 |
|
|
goto error;
|
| 303 |
|
|
}
|
| 304 |
|
|
flag = 1;
|
| 305 |
|
|
}
|
| 306 |
|
|
}
|
| 307 |
|
|
|
| 308 |
|
|
function = 0x8;
|
| 309 |
|
|
break;
|
| 310 |
|
|
default:
|
| 311 |
|
|
err ("MAJOR PROBLEM!!!!, header type not supported? %x\n", hdr_type);
|
| 312 |
|
|
return -ENXIO;
|
| 313 |
|
|
break;
|
| 314 |
|
|
} /* end of switch */
|
| 315 |
|
|
} /* end of valid device */
|
| 316 |
|
|
} /* end of for */
|
| 317 |
|
|
|
| 318 |
|
|
if (!valid_device) {
|
| 319 |
|
|
err ("Cannot find any valid devices on the card. Or unable to read from card.\n");
|
| 320 |
|
|
return -ENODEV;
|
| 321 |
|
|
}
|
| 322 |
|
|
|
| 323 |
|
|
return 0;
|
| 324 |
|
|
|
| 325 |
|
|
error:
|
| 326 |
|
|
for (i = 0; i < cleanup_count; i++) {
|
| 327 |
|
|
if (cur_func->io[i]) {
|
| 328 |
|
|
ibmphp_remove_resource (cur_func->io[i]);
|
| 329 |
|
|
cur_func->io[i] = NULL;
|
| 330 |
|
|
} else if (cur_func->pfmem[i]) {
|
| 331 |
|
|
ibmphp_remove_resource (cur_func->pfmem[i]);
|
| 332 |
|
|
cur_func->pfmem[i] = NULL;
|
| 333 |
|
|
} else if (cur_func->mem[i]) {
|
| 334 |
|
|
ibmphp_remove_resource (cur_func->mem[i]);
|
| 335 |
|
|
cur_func->mem[i] = NULL;
|
| 336 |
|
|
}
|
| 337 |
|
|
}
|
| 338 |
|
|
return rc;
|
| 339 |
|
|
}
|
| 340 |
|
|
|
| 341 |
|
|
/*
|
| 342 |
|
|
* This function configures the pci BARs of a single device.
|
| 343 |
|
|
* Input: pointer to the pci_func
|
| 344 |
|
|
* Output: configured PCI, 0, or error
|
| 345 |
|
|
*/
|
| 346 |
|
|
static int configure_device (struct pci_func *func)
|
| 347 |
|
|
{
|
| 348 |
|
|
u32 bar[6];
|
| 349 |
|
|
u32 address[] = {
|
| 350 |
|
|
PCI_BASE_ADDRESS_0,
|
| 351 |
|
|
PCI_BASE_ADDRESS_1,
|
| 352 |
|
|
PCI_BASE_ADDRESS_2,
|
| 353 |
|
|
PCI_BASE_ADDRESS_3,
|
| 354 |
|
|
PCI_BASE_ADDRESS_4,
|
| 355 |
|
|
PCI_BASE_ADDRESS_5,
|
| 356 |
|
|
|
| 357 |
|
|
};
|
| 358 |
|
|
u8 irq;
|
| 359 |
|
|
int count;
|
| 360 |
|
|
int len[6];
|
| 361 |
|
|
struct resource_node *io[6];
|
| 362 |
|
|
struct resource_node *mem[6];
|
| 363 |
|
|
struct resource_node *mem_tmp;
|
| 364 |
|
|
struct resource_node *pfmem[6];
|
| 365 |
|
|
unsigned int devfn;
|
| 366 |
|
|
|
| 367 |
|
|
debug ("%s - inside\n", __FUNCTION__);
|
| 368 |
|
|
|
| 369 |
|
|
devfn = PCI_DEVFN(func->device, func->function);
|
| 370 |
|
|
ibmphp_pci_bus->number = func->busno;
|
| 371 |
|
|
|
| 372 |
|
|
for (count = 0; address[count]; count++) { /* for 6 BARs */
|
| 373 |
|
|
|
| 374 |
|
|
/* not sure if i need this. per scott, said maybe need smth like this
|
| 375 |
|
|
if devices don't adhere 100% to the spec, so don't want to write
|
| 376 |
|
|
to the reserved bits
|
| 377 |
|
|
|
| 378 |
|
|
pcibios_read_config_byte(cur_func->busno, cur_func->device,
|
| 379 |
|
|
PCI_BASE_ADDRESS_0 + 4 * count, &tmp);
|
| 380 |
|
|
if (tmp & 0x01) // IO
|
| 381 |
|
|
pcibios_write_config_dword(cur_func->busno, cur_func->device,
|
| 382 |
|
|
PCI_BASE_ADDRESS_0 + 4 * count, 0xFFFFFFFD);
|
| 383 |
|
|
else // Memory
|
| 384 |
|
|
pcibios_write_config_dword(cur_func->busno, cur_func->device,
|
| 385 |
|
|
PCI_BASE_ADDRESS_0 + 4 * count, 0xFFFFFFFF);
|
| 386 |
|
|
*/
|
| 387 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, address[count], 0xFFFFFFFF);
|
| 388 |
|
|
pci_bus_read_config_dword (ibmphp_pci_bus, devfn, address[count], &bar[count]);
|
| 389 |
|
|
|
| 390 |
|
|
if (!bar[count]) /* This BAR is not implemented */
|
| 391 |
|
|
continue;
|
| 392 |
|
|
|
| 393 |
|
|
debug ("Device %x BAR %d wants %x\n", func->device, count, bar[count]);
|
| 394 |
|
|
|
| 395 |
|
|
if (bar[count] & PCI_BASE_ADDRESS_SPACE_IO) {
|
| 396 |
|
|
/* This is IO */
|
| 397 |
|
|
debug ("inside IO SPACE\n");
|
| 398 |
|
|
|
| 399 |
|
|
len[count] = bar[count] & 0xFFFFFFFC;
|
| 400 |
|
|
len[count] = ~len[count] + 1;
|
| 401 |
|
|
|
| 402 |
|
|
debug ("len[count] in IO %x, count %d\n", len[count], count);
|
| 403 |
|
|
|
| 404 |
|
|
io[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
|
| 405 |
|
|
|
| 406 |
|
|
if (!io[count]) {
|
| 407 |
|
|
err ("out of system memory\n");
|
| 408 |
|
|
return -ENOMEM;
|
| 409 |
|
|
}
|
| 410 |
|
|
io[count]->type = IO;
|
| 411 |
|
|
io[count]->busno = func->busno;
|
| 412 |
|
|
io[count]->devfunc = PCI_DEVFN(func->device, func->function);
|
| 413 |
|
|
io[count]->len = len[count];
|
| 414 |
|
|
if (ibmphp_check_resource(io[count], 0) == 0) {
|
| 415 |
|
|
ibmphp_add_resource (io[count]);
|
| 416 |
|
|
func->io[count] = io[count];
|
| 417 |
|
|
} else {
|
| 418 |
|
|
err ("cannot allocate requested io for bus %x device %x function %x len %x\n",
|
| 419 |
|
|
func->busno, func->device, func->function, len[count]);
|
| 420 |
|
|
kfree (io[count]);
|
| 421 |
|
|
return -EIO;
|
| 422 |
|
|
}
|
| 423 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, address[count], func->io[count]->start);
|
| 424 |
|
|
|
| 425 |
|
|
/* _______________This is for debugging purposes only_____________________ */
|
| 426 |
|
|
debug ("b4 writing, the IO address is %x\n", func->io[count]->start);
|
| 427 |
|
|
pci_bus_read_config_dword (ibmphp_pci_bus, devfn, address[count], &bar[count]);
|
| 428 |
|
|
debug ("after writing.... the start address is %x\n", bar[count]);
|
| 429 |
|
|
/* _________________________________________________________________________*/
|
| 430 |
|
|
|
| 431 |
|
|
} else {
|
| 432 |
|
|
/* This is Memory */
|
| 433 |
|
|
if (bar[count] & PCI_BASE_ADDRESS_MEM_PREFETCH) {
|
| 434 |
|
|
/* pfmem */
|
| 435 |
|
|
debug ("PFMEM SPACE\n");
|
| 436 |
|
|
|
| 437 |
|
|
len[count] = bar[count] & 0xFFFFFFF0;
|
| 438 |
|
|
len[count] = ~len[count] + 1;
|
| 439 |
|
|
|
| 440 |
|
|
debug ("len[count] in PFMEM %x, count %d\n", len[count], count);
|
| 441 |
|
|
|
| 442 |
|
|
pfmem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
|
| 443 |
|
|
if (!pfmem[count]) {
|
| 444 |
|
|
err ("out of system memory\n");
|
| 445 |
|
|
return -ENOMEM;
|
| 446 |
|
|
}
|
| 447 |
|
|
pfmem[count]->type = PFMEM;
|
| 448 |
|
|
pfmem[count]->busno = func->busno;
|
| 449 |
|
|
pfmem[count]->devfunc = PCI_DEVFN(func->device,
|
| 450 |
|
|
func->function);
|
| 451 |
|
|
pfmem[count]->len = len[count];
|
| 452 |
|
|
pfmem[count]->fromMem = 0;
|
| 453 |
|
|
if (ibmphp_check_resource (pfmem[count], 0) == 0) {
|
| 454 |
|
|
ibmphp_add_resource (pfmem[count]);
|
| 455 |
|
|
func->pfmem[count] = pfmem[count];
|
| 456 |
|
|
} else {
|
| 457 |
|
|
mem_tmp = kzalloc(sizeof(*mem_tmp), GFP_KERNEL);
|
| 458 |
|
|
if (!mem_tmp) {
|
| 459 |
|
|
err ("out of system memory\n");
|
| 460 |
|
|
kfree (pfmem[count]);
|
| 461 |
|
|
return -ENOMEM;
|
| 462 |
|
|
}
|
| 463 |
|
|
mem_tmp->type = MEM;
|
| 464 |
|
|
mem_tmp->busno = pfmem[count]->busno;
|
| 465 |
|
|
mem_tmp->devfunc = pfmem[count]->devfunc;
|
| 466 |
|
|
mem_tmp->len = pfmem[count]->len;
|
| 467 |
|
|
debug ("there's no pfmem... going into mem.\n");
|
| 468 |
|
|
if (ibmphp_check_resource (mem_tmp, 0) == 0) {
|
| 469 |
|
|
ibmphp_add_resource (mem_tmp);
|
| 470 |
|
|
pfmem[count]->fromMem = 1;
|
| 471 |
|
|
pfmem[count]->rangeno = mem_tmp->rangeno;
|
| 472 |
|
|
pfmem[count]->start = mem_tmp->start;
|
| 473 |
|
|
pfmem[count]->end = mem_tmp->end;
|
| 474 |
|
|
ibmphp_add_pfmem_from_mem (pfmem[count]);
|
| 475 |
|
|
func->pfmem[count] = pfmem[count];
|
| 476 |
|
|
} else {
|
| 477 |
|
|
err ("cannot allocate requested pfmem for bus %x, device %x, len %x\n",
|
| 478 |
|
|
func->busno, func->device, len[count]);
|
| 479 |
|
|
kfree (mem_tmp);
|
| 480 |
|
|
kfree (pfmem[count]);
|
| 481 |
|
|
return -EIO;
|
| 482 |
|
|
}
|
| 483 |
|
|
}
|
| 484 |
|
|
|
| 485 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, address[count], func->pfmem[count]->start);
|
| 486 |
|
|
|
| 487 |
|
|
/*_______________This is for debugging purposes only______________________________*/
|
| 488 |
|
|
debug ("b4 writing, start address is %x\n", func->pfmem[count]->start);
|
| 489 |
|
|
pci_bus_read_config_dword (ibmphp_pci_bus, devfn, address[count], &bar[count]);
|
| 490 |
|
|
debug ("after writing, start address is %x\n", bar[count]);
|
| 491 |
|
|
/*_________________________________________________________________________________*/
|
| 492 |
|
|
|
| 493 |
|
|
if (bar[count] & PCI_BASE_ADDRESS_MEM_TYPE_64) { /* takes up another dword */
|
| 494 |
|
|
debug ("inside the mem 64 case, count %d\n", count);
|
| 495 |
|
|
count += 1;
|
| 496 |
|
|
/* on the 2nd dword, write all 0s, since we can't handle them n.e.ways */
|
| 497 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, address[count], 0x00000000);
|
| 498 |
|
|
}
|
| 499 |
|
|
} else {
|
| 500 |
|
|
/* regular memory */
|
| 501 |
|
|
debug ("REGULAR MEM SPACE\n");
|
| 502 |
|
|
|
| 503 |
|
|
len[count] = bar[count] & 0xFFFFFFF0;
|
| 504 |
|
|
len[count] = ~len[count] + 1;
|
| 505 |
|
|
|
| 506 |
|
|
debug ("len[count] in Mem %x, count %d\n", len[count], count);
|
| 507 |
|
|
|
| 508 |
|
|
mem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
|
| 509 |
|
|
if (!mem[count]) {
|
| 510 |
|
|
err ("out of system memory\n");
|
| 511 |
|
|
return -ENOMEM;
|
| 512 |
|
|
}
|
| 513 |
|
|
mem[count]->type = MEM;
|
| 514 |
|
|
mem[count]->busno = func->busno;
|
| 515 |
|
|
mem[count]->devfunc = PCI_DEVFN(func->device,
|
| 516 |
|
|
func->function);
|
| 517 |
|
|
mem[count]->len = len[count];
|
| 518 |
|
|
if (ibmphp_check_resource (mem[count], 0) == 0) {
|
| 519 |
|
|
ibmphp_add_resource (mem[count]);
|
| 520 |
|
|
func->mem[count] = mem[count];
|
| 521 |
|
|
} else {
|
| 522 |
|
|
err ("cannot allocate requested mem for bus %x, device %x, len %x\n",
|
| 523 |
|
|
func->busno, func->device, len[count]);
|
| 524 |
|
|
kfree (mem[count]);
|
| 525 |
|
|
return -EIO;
|
| 526 |
|
|
}
|
| 527 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, address[count], func->mem[count]->start);
|
| 528 |
|
|
/* _______________________This is for debugging purposes only _______________________*/
|
| 529 |
|
|
debug ("b4 writing, start address is %x\n", func->mem[count]->start);
|
| 530 |
|
|
pci_bus_read_config_dword (ibmphp_pci_bus, devfn, address[count], &bar[count]);
|
| 531 |
|
|
debug ("after writing, the address is %x\n", bar[count]);
|
| 532 |
|
|
/* __________________________________________________________________________________*/
|
| 533 |
|
|
|
| 534 |
|
|
if (bar[count] & PCI_BASE_ADDRESS_MEM_TYPE_64) {
|
| 535 |
|
|
/* takes up another dword */
|
| 536 |
|
|
debug ("inside mem 64 case, reg. mem, count %d\n", count);
|
| 537 |
|
|
count += 1;
|
| 538 |
|
|
/* on the 2nd dword, write all 0s, since we can't handle them n.e.ways */
|
| 539 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, address[count], 0x00000000);
|
| 540 |
|
|
}
|
| 541 |
|
|
}
|
| 542 |
|
|
} /* end of mem */
|
| 543 |
|
|
} /* end of for */
|
| 544 |
|
|
|
| 545 |
|
|
func->bus = 0; /* To indicate that this is not a PPB */
|
| 546 |
|
|
pci_bus_read_config_byte (ibmphp_pci_bus, devfn, PCI_INTERRUPT_PIN, &irq);
|
| 547 |
|
|
if ((irq > 0x00) && (irq < 0x05))
|
| 548 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_INTERRUPT_LINE, func->irq[irq - 1]);
|
| 549 |
|
|
|
| 550 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_CACHE_LINE_SIZE, CACHE);
|
| 551 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_LATENCY_TIMER, LATENCY);
|
| 552 |
|
|
|
| 553 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, PCI_ROM_ADDRESS, 0x00L);
|
| 554 |
|
|
pci_bus_write_config_word (ibmphp_pci_bus, devfn, PCI_COMMAND, DEVICEENABLE);
|
| 555 |
|
|
|
| 556 |
|
|
return 0;
|
| 557 |
|
|
}
|
| 558 |
|
|
|
| 559 |
|
|
/******************************************************************************
|
| 560 |
|
|
* This routine configures a PCI-2-PCI bridge and the functions behind it
|
| 561 |
|
|
* Parameters: pci_func
|
| 562 |
|
|
* Returns:
|
| 563 |
|
|
******************************************************************************/
|
| 564 |
|
|
static int configure_bridge (struct pci_func **func_passed, u8 slotno)
|
| 565 |
|
|
{
|
| 566 |
|
|
int count;
|
| 567 |
|
|
int i;
|
| 568 |
|
|
int rc;
|
| 569 |
|
|
u8 sec_number;
|
| 570 |
|
|
u8 io_base;
|
| 571 |
|
|
u16 pfmem_base;
|
| 572 |
|
|
u32 bar[2];
|
| 573 |
|
|
u32 len[2];
|
| 574 |
|
|
u8 flag_io = 0;
|
| 575 |
|
|
u8 flag_mem = 0;
|
| 576 |
|
|
u8 flag_pfmem = 0;
|
| 577 |
|
|
u8 need_io_upper = 0;
|
| 578 |
|
|
u8 need_pfmem_upper = 0;
|
| 579 |
|
|
struct res_needed *amount_needed = NULL;
|
| 580 |
|
|
struct resource_node *io = NULL;
|
| 581 |
|
|
struct resource_node *bus_io[2] = {NULL, NULL};
|
| 582 |
|
|
struct resource_node *mem = NULL;
|
| 583 |
|
|
struct resource_node *bus_mem[2] = {NULL, NULL};
|
| 584 |
|
|
struct resource_node *mem_tmp = NULL;
|
| 585 |
|
|
struct resource_node *pfmem = NULL;
|
| 586 |
|
|
struct resource_node *bus_pfmem[2] = {NULL, NULL};
|
| 587 |
|
|
struct bus_node *bus;
|
| 588 |
|
|
u32 address[] = {
|
| 589 |
|
|
PCI_BASE_ADDRESS_0,
|
| 590 |
|
|
PCI_BASE_ADDRESS_1,
|
| 591 |
|
|
|
| 592 |
|
|
};
|
| 593 |
|
|
struct pci_func *func = *func_passed;
|
| 594 |
|
|
unsigned int devfn;
|
| 595 |
|
|
u8 irq;
|
| 596 |
|
|
int retval;
|
| 597 |
|
|
|
| 598 |
|
|
debug ("%s - enter\n", __FUNCTION__);
|
| 599 |
|
|
|
| 600 |
|
|
devfn = PCI_DEVFN(func->function, func->device);
|
| 601 |
|
|
ibmphp_pci_bus->number = func->busno;
|
| 602 |
|
|
|
| 603 |
|
|
/* Configuring necessary info for the bridge so that we could see the devices
|
| 604 |
|
|
* behind it
|
| 605 |
|
|
*/
|
| 606 |
|
|
|
| 607 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_PRIMARY_BUS, func->busno);
|
| 608 |
|
|
|
| 609 |
|
|
/* _____________________For debugging purposes only __________________________
|
| 610 |
|
|
pci_bus_config_byte (ibmphp_pci_bus, devfn, PCI_PRIMARY_BUS, &pri_number);
|
| 611 |
|
|
debug ("primary # written into the bridge is %x\n", pri_number);
|
| 612 |
|
|
___________________________________________________________________________*/
|
| 613 |
|
|
|
| 614 |
|
|
/* in EBDA, only get allocated 1 additional bus # per slot */
|
| 615 |
|
|
sec_number = find_sec_number (func->busno, slotno);
|
| 616 |
|
|
if (sec_number == 0xff) {
|
| 617 |
|
|
err ("cannot allocate secondary bus number for the bridged device\n");
|
| 618 |
|
|
return -EINVAL;
|
| 619 |
|
|
}
|
| 620 |
|
|
|
| 621 |
|
|
debug ("after find_sec_number, the number we got is %x\n", sec_number);
|
| 622 |
|
|
debug ("AFTER FIND_SEC_NUMBER, func->busno IS %x\n", func->busno);
|
| 623 |
|
|
|
| 624 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_SECONDARY_BUS, sec_number);
|
| 625 |
|
|
|
| 626 |
|
|
/* __________________For debugging purposes only __________________________________
|
| 627 |
|
|
pci_bus_read_config_byte (ibmphp_pci_bus, devfn, PCI_SECONDARY_BUS, &sec_number);
|
| 628 |
|
|
debug ("sec_number after write/read is %x\n", sec_number);
|
| 629 |
|
|
________________________________________________________________________________*/
|
| 630 |
|
|
|
| 631 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_SUBORDINATE_BUS, sec_number);
|
| 632 |
|
|
|
| 633 |
|
|
/* __________________For debugging purposes only ____________________________________
|
| 634 |
|
|
pci_bus_read_config_byte (ibmphp_pci_bus, devfn, PCI_SUBORDINATE_BUS, &sec_number);
|
| 635 |
|
|
debug ("subordinate number after write/read is %x\n", sec_number);
|
| 636 |
|
|
__________________________________________________________________________________*/
|
| 637 |
|
|
|
| 638 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_CACHE_LINE_SIZE, CACHE);
|
| 639 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_LATENCY_TIMER, LATENCY);
|
| 640 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_SEC_LATENCY_TIMER, LATENCY);
|
| 641 |
|
|
|
| 642 |
|
|
debug ("func->busno is %x\n", func->busno);
|
| 643 |
|
|
debug ("sec_number after writing is %x\n", sec_number);
|
| 644 |
|
|
|
| 645 |
|
|
|
| 646 |
|
|
/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
| 647 |
|
|
!!!!!!!!!!!!!!!NEED TO ADD!!! FAST BACK-TO-BACK ENABLE!!!!!!!!!!!!!!!!!!!!
|
| 648 |
|
|
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!*/
|
| 649 |
|
|
|
| 650 |
|
|
|
| 651 |
|
|
/* First we need to allocate mem/io for the bridge itself in case it needs it */
|
| 652 |
|
|
for (count = 0; address[count]; count++) { /* for 2 BARs */
|
| 653 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, address[count], 0xFFFFFFFF);
|
| 654 |
|
|
pci_bus_read_config_dword (ibmphp_pci_bus, devfn, address[count], &bar[count]);
|
| 655 |
|
|
|
| 656 |
|
|
if (!bar[count]) {
|
| 657 |
|
|
/* This BAR is not implemented */
|
| 658 |
|
|
debug ("so we come here then, eh?, count = %d\n", count);
|
| 659 |
|
|
continue;
|
| 660 |
|
|
}
|
| 661 |
|
|
// tmp_bar = bar[count];
|
| 662 |
|
|
|
| 663 |
|
|
debug ("Bar %d wants %x\n", count, bar[count]);
|
| 664 |
|
|
|
| 665 |
|
|
if (bar[count] & PCI_BASE_ADDRESS_SPACE_IO) {
|
| 666 |
|
|
/* This is IO */
|
| 667 |
|
|
len[count] = bar[count] & 0xFFFFFFFC;
|
| 668 |
|
|
len[count] = ~len[count] + 1;
|
| 669 |
|
|
|
| 670 |
|
|
debug ("len[count] in IO = %x\n", len[count]);
|
| 671 |
|
|
|
| 672 |
|
|
bus_io[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
|
| 673 |
|
|
|
| 674 |
|
|
if (!bus_io[count]) {
|
| 675 |
|
|
err ("out of system memory\n");
|
| 676 |
|
|
retval = -ENOMEM;
|
| 677 |
|
|
goto error;
|
| 678 |
|
|
}
|
| 679 |
|
|
bus_io[count]->type = IO;
|
| 680 |
|
|
bus_io[count]->busno = func->busno;
|
| 681 |
|
|
bus_io[count]->devfunc = PCI_DEVFN(func->device,
|
| 682 |
|
|
func->function);
|
| 683 |
|
|
bus_io[count]->len = len[count];
|
| 684 |
|
|
if (ibmphp_check_resource (bus_io[count], 0) == 0) {
|
| 685 |
|
|
ibmphp_add_resource (bus_io[count]);
|
| 686 |
|
|
func->io[count] = bus_io[count];
|
| 687 |
|
|
} else {
|
| 688 |
|
|
err ("cannot allocate requested io for bus %x, device %x, len %x\n",
|
| 689 |
|
|
func->busno, func->device, len[count]);
|
| 690 |
|
|
kfree (bus_io[count]);
|
| 691 |
|
|
return -EIO;
|
| 692 |
|
|
}
|
| 693 |
|
|
|
| 694 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, address[count], func->io[count]->start);
|
| 695 |
|
|
|
| 696 |
|
|
} else {
|
| 697 |
|
|
/* This is Memory */
|
| 698 |
|
|
if (bar[count] & PCI_BASE_ADDRESS_MEM_PREFETCH) {
|
| 699 |
|
|
/* pfmem */
|
| 700 |
|
|
len[count] = bar[count] & 0xFFFFFFF0;
|
| 701 |
|
|
len[count] = ~len[count] + 1;
|
| 702 |
|
|
|
| 703 |
|
|
debug ("len[count] in PFMEM = %x\n", len[count]);
|
| 704 |
|
|
|
| 705 |
|
|
bus_pfmem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
|
| 706 |
|
|
if (!bus_pfmem[count]) {
|
| 707 |
|
|
err ("out of system memory\n");
|
| 708 |
|
|
retval = -ENOMEM;
|
| 709 |
|
|
goto error;
|
| 710 |
|
|
}
|
| 711 |
|
|
bus_pfmem[count]->type = PFMEM;
|
| 712 |
|
|
bus_pfmem[count]->busno = func->busno;
|
| 713 |
|
|
bus_pfmem[count]->devfunc = PCI_DEVFN(func->device,
|
| 714 |
|
|
func->function);
|
| 715 |
|
|
bus_pfmem[count]->len = len[count];
|
| 716 |
|
|
bus_pfmem[count]->fromMem = 0;
|
| 717 |
|
|
if (ibmphp_check_resource (bus_pfmem[count], 0) == 0) {
|
| 718 |
|
|
ibmphp_add_resource (bus_pfmem[count]);
|
| 719 |
|
|
func->pfmem[count] = bus_pfmem[count];
|
| 720 |
|
|
} else {
|
| 721 |
|
|
mem_tmp = kzalloc(sizeof(*mem_tmp), GFP_KERNEL);
|
| 722 |
|
|
if (!mem_tmp) {
|
| 723 |
|
|
err ("out of system memory\n");
|
| 724 |
|
|
retval = -ENOMEM;
|
| 725 |
|
|
goto error;
|
| 726 |
|
|
}
|
| 727 |
|
|
mem_tmp->type = MEM;
|
| 728 |
|
|
mem_tmp->busno = bus_pfmem[count]->busno;
|
| 729 |
|
|
mem_tmp->devfunc = bus_pfmem[count]->devfunc;
|
| 730 |
|
|
mem_tmp->len = bus_pfmem[count]->len;
|
| 731 |
|
|
if (ibmphp_check_resource (mem_tmp, 0) == 0) {
|
| 732 |
|
|
ibmphp_add_resource (mem_tmp);
|
| 733 |
|
|
bus_pfmem[count]->fromMem = 1;
|
| 734 |
|
|
bus_pfmem[count]->rangeno = mem_tmp->rangeno;
|
| 735 |
|
|
ibmphp_add_pfmem_from_mem (bus_pfmem[count]);
|
| 736 |
|
|
func->pfmem[count] = bus_pfmem[count];
|
| 737 |
|
|
} else {
|
| 738 |
|
|
err ("cannot allocate requested pfmem for bus %x, device %x, len %x\n",
|
| 739 |
|
|
func->busno, func->device, len[count]);
|
| 740 |
|
|
kfree (mem_tmp);
|
| 741 |
|
|
kfree (bus_pfmem[count]);
|
| 742 |
|
|
return -EIO;
|
| 743 |
|
|
}
|
| 744 |
|
|
}
|
| 745 |
|
|
|
| 746 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, address[count], func->pfmem[count]->start);
|
| 747 |
|
|
|
| 748 |
|
|
if (bar[count] & PCI_BASE_ADDRESS_MEM_TYPE_64) {
|
| 749 |
|
|
/* takes up another dword */
|
| 750 |
|
|
count += 1;
|
| 751 |
|
|
/* on the 2nd dword, write all 0s, since we can't handle them n.e.ways */
|
| 752 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, address[count], 0x00000000);
|
| 753 |
|
|
|
| 754 |
|
|
}
|
| 755 |
|
|
} else {
|
| 756 |
|
|
/* regular memory */
|
| 757 |
|
|
len[count] = bar[count] & 0xFFFFFFF0;
|
| 758 |
|
|
len[count] = ~len[count] + 1;
|
| 759 |
|
|
|
| 760 |
|
|
debug ("len[count] in Memory is %x\n", len[count]);
|
| 761 |
|
|
|
| 762 |
|
|
bus_mem[count] = kzalloc(sizeof(struct resource_node), GFP_KERNEL);
|
| 763 |
|
|
if (!bus_mem[count]) {
|
| 764 |
|
|
err ("out of system memory\n");
|
| 765 |
|
|
retval = -ENOMEM;
|
| 766 |
|
|
goto error;
|
| 767 |
|
|
}
|
| 768 |
|
|
bus_mem[count]->type = MEM;
|
| 769 |
|
|
bus_mem[count]->busno = func->busno;
|
| 770 |
|
|
bus_mem[count]->devfunc = PCI_DEVFN(func->device,
|
| 771 |
|
|
func->function);
|
| 772 |
|
|
bus_mem[count]->len = len[count];
|
| 773 |
|
|
if (ibmphp_check_resource (bus_mem[count], 0) == 0) {
|
| 774 |
|
|
ibmphp_add_resource (bus_mem[count]);
|
| 775 |
|
|
func->mem[count] = bus_mem[count];
|
| 776 |
|
|
} else {
|
| 777 |
|
|
err ("cannot allocate requested mem for bus %x, device %x, len %x\n",
|
| 778 |
|
|
func->busno, func->device, len[count]);
|
| 779 |
|
|
kfree (bus_mem[count]);
|
| 780 |
|
|
return -EIO;
|
| 781 |
|
|
}
|
| 782 |
|
|
|
| 783 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, address[count], func->mem[count]->start);
|
| 784 |
|
|
|
| 785 |
|
|
if (bar[count] & PCI_BASE_ADDRESS_MEM_TYPE_64) {
|
| 786 |
|
|
/* takes up another dword */
|
| 787 |
|
|
count += 1;
|
| 788 |
|
|
/* on the 2nd dword, write all 0s, since we can't handle them n.e.ways */
|
| 789 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, address[count], 0x00000000);
|
| 790 |
|
|
|
| 791 |
|
|
}
|
| 792 |
|
|
}
|
| 793 |
|
|
} /* end of mem */
|
| 794 |
|
|
} /* end of for */
|
| 795 |
|
|
|
| 796 |
|
|
/* Now need to see how much space the devices behind the bridge needed */
|
| 797 |
|
|
amount_needed = scan_behind_bridge (func, sec_number);
|
| 798 |
|
|
if (amount_needed == NULL)
|
| 799 |
|
|
return -ENOMEM;
|
| 800 |
|
|
|
| 801 |
|
|
ibmphp_pci_bus->number = func->busno;
|
| 802 |
|
|
debug ("after coming back from scan_behind_bridge\n");
|
| 803 |
|
|
debug ("amount_needed->not_correct = %x\n", amount_needed->not_correct);
|
| 804 |
|
|
debug ("amount_needed->io = %x\n", amount_needed->io);
|
| 805 |
|
|
debug ("amount_needed->mem = %x\n", amount_needed->mem);
|
| 806 |
|
|
debug ("amount_needed->pfmem = %x\n", amount_needed->pfmem);
|
| 807 |
|
|
|
| 808 |
|
|
if (amount_needed->not_correct) {
|
| 809 |
|
|
debug ("amount_needed is not correct\n");
|
| 810 |
|
|
for (count = 0; address[count]; count++) {
|
| 811 |
|
|
/* for 2 BARs */
|
| 812 |
|
|
if (bus_io[count]) {
|
| 813 |
|
|
ibmphp_remove_resource (bus_io[count]);
|
| 814 |
|
|
func->io[count] = NULL;
|
| 815 |
|
|
} else if (bus_pfmem[count]) {
|
| 816 |
|
|
ibmphp_remove_resource (bus_pfmem[count]);
|
| 817 |
|
|
func->pfmem[count] = NULL;
|
| 818 |
|
|
} else if (bus_mem[count]) {
|
| 819 |
|
|
ibmphp_remove_resource (bus_mem[count]);
|
| 820 |
|
|
func->mem[count] = NULL;
|
| 821 |
|
|
}
|
| 822 |
|
|
}
|
| 823 |
|
|
kfree (amount_needed);
|
| 824 |
|
|
return -ENODEV;
|
| 825 |
|
|
}
|
| 826 |
|
|
|
| 827 |
|
|
if (!amount_needed->io) {
|
| 828 |
|
|
debug ("it doesn't want IO?\n");
|
| 829 |
|
|
flag_io = 1;
|
| 830 |
|
|
} else {
|
| 831 |
|
|
debug ("it wants %x IO behind the bridge\n", amount_needed->io);
|
| 832 |
|
|
io = kzalloc(sizeof(*io), GFP_KERNEL);
|
| 833 |
|
|
|
| 834 |
|
|
if (!io) {
|
| 835 |
|
|
err ("out of system memory\n");
|
| 836 |
|
|
retval = -ENOMEM;
|
| 837 |
|
|
goto error;
|
| 838 |
|
|
}
|
| 839 |
|
|
io->type = IO;
|
| 840 |
|
|
io->busno = func->busno;
|
| 841 |
|
|
io->devfunc = PCI_DEVFN(func->device, func->function);
|
| 842 |
|
|
io->len = amount_needed->io;
|
| 843 |
|
|
if (ibmphp_check_resource (io, 1) == 0) {
|
| 844 |
|
|
debug ("were we able to add io\n");
|
| 845 |
|
|
ibmphp_add_resource (io);
|
| 846 |
|
|
flag_io = 1;
|
| 847 |
|
|
}
|
| 848 |
|
|
}
|
| 849 |
|
|
|
| 850 |
|
|
if (!amount_needed->mem) {
|
| 851 |
|
|
debug ("it doesn't want n.e.memory?\n");
|
| 852 |
|
|
flag_mem = 1;
|
| 853 |
|
|
} else {
|
| 854 |
|
|
debug ("it wants %x memory behind the bridge\n", amount_needed->mem);
|
| 855 |
|
|
mem = kzalloc(sizeof(*mem), GFP_KERNEL);
|
| 856 |
|
|
if (!mem) {
|
| 857 |
|
|
err ("out of system memory\n");
|
| 858 |
|
|
retval = -ENOMEM;
|
| 859 |
|
|
goto error;
|
| 860 |
|
|
}
|
| 861 |
|
|
mem->type = MEM;
|
| 862 |
|
|
mem->busno = func->busno;
|
| 863 |
|
|
mem->devfunc = PCI_DEVFN(func->device, func->function);
|
| 864 |
|
|
mem->len = amount_needed->mem;
|
| 865 |
|
|
if (ibmphp_check_resource (mem, 1) == 0) {
|
| 866 |
|
|
ibmphp_add_resource (mem);
|
| 867 |
|
|
flag_mem = 1;
|
| 868 |
|
|
debug ("were we able to add mem\n");
|
| 869 |
|
|
}
|
| 870 |
|
|
}
|
| 871 |
|
|
|
| 872 |
|
|
if (!amount_needed->pfmem) {
|
| 873 |
|
|
debug ("it doesn't want n.e.pfmem mem?\n");
|
| 874 |
|
|
flag_pfmem = 1;
|
| 875 |
|
|
} else {
|
| 876 |
|
|
debug ("it wants %x pfmemory behind the bridge\n", amount_needed->pfmem);
|
| 877 |
|
|
pfmem = kzalloc(sizeof(*pfmem), GFP_KERNEL);
|
| 878 |
|
|
if (!pfmem) {
|
| 879 |
|
|
err ("out of system memory\n");
|
| 880 |
|
|
retval = -ENOMEM;
|
| 881 |
|
|
goto error;
|
| 882 |
|
|
}
|
| 883 |
|
|
pfmem->type = PFMEM;
|
| 884 |
|
|
pfmem->busno = func->busno;
|
| 885 |
|
|
pfmem->devfunc = PCI_DEVFN(func->device, func->function);
|
| 886 |
|
|
pfmem->len = amount_needed->pfmem;
|
| 887 |
|
|
pfmem->fromMem = 0;
|
| 888 |
|
|
if (ibmphp_check_resource (pfmem, 1) == 0) {
|
| 889 |
|
|
ibmphp_add_resource (pfmem);
|
| 890 |
|
|
flag_pfmem = 1;
|
| 891 |
|
|
} else {
|
| 892 |
|
|
mem_tmp = kzalloc(sizeof(*mem_tmp), GFP_KERNEL);
|
| 893 |
|
|
if (!mem_tmp) {
|
| 894 |
|
|
err ("out of system memory\n");
|
| 895 |
|
|
retval = -ENOMEM;
|
| 896 |
|
|
goto error;
|
| 897 |
|
|
}
|
| 898 |
|
|
mem_tmp->type = MEM;
|
| 899 |
|
|
mem_tmp->busno = pfmem->busno;
|
| 900 |
|
|
mem_tmp->devfunc = pfmem->devfunc;
|
| 901 |
|
|
mem_tmp->len = pfmem->len;
|
| 902 |
|
|
if (ibmphp_check_resource (mem_tmp, 1) == 0) {
|
| 903 |
|
|
ibmphp_add_resource (mem_tmp);
|
| 904 |
|
|
pfmem->fromMem = 1;
|
| 905 |
|
|
pfmem->rangeno = mem_tmp->rangeno;
|
| 906 |
|
|
ibmphp_add_pfmem_from_mem (pfmem);
|
| 907 |
|
|
flag_pfmem = 1;
|
| 908 |
|
|
}
|
| 909 |
|
|
}
|
| 910 |
|
|
}
|
| 911 |
|
|
|
| 912 |
|
|
debug ("b4 if (flag_io && flag_mem && flag_pfmem)\n");
|
| 913 |
|
|
debug ("flag_io = %x, flag_mem = %x, flag_pfmem = %x\n", flag_io, flag_mem, flag_pfmem);
|
| 914 |
|
|
|
| 915 |
|
|
if (flag_io && flag_mem && flag_pfmem) {
|
| 916 |
|
|
/* If on bootup, there was a bridged card in this slot,
|
| 917 |
|
|
* then card was removed and ibmphp got unloaded and loaded
|
| 918 |
|
|
* back again, there's no way for us to remove the bus
|
| 919 |
|
|
* struct, so no need to kmalloc, can use existing node
|
| 920 |
|
|
*/
|
| 921 |
|
|
bus = ibmphp_find_res_bus (sec_number);
|
| 922 |
|
|
if (!bus) {
|
| 923 |
|
|
bus = kzalloc(sizeof(*bus), GFP_KERNEL);
|
| 924 |
|
|
if (!bus) {
|
| 925 |
|
|
err ("out of system memory\n");
|
| 926 |
|
|
retval = -ENOMEM;
|
| 927 |
|
|
goto error;
|
| 928 |
|
|
}
|
| 929 |
|
|
bus->busno = sec_number;
|
| 930 |
|
|
debug ("b4 adding new bus\n");
|
| 931 |
|
|
rc = add_new_bus (bus, io, mem, pfmem, func->busno);
|
| 932 |
|
|
} else if (!(bus->rangeIO) && !(bus->rangeMem) && !(bus->rangePFMem))
|
| 933 |
|
|
rc = add_new_bus (bus, io, mem, pfmem, 0xFF);
|
| 934 |
|
|
else {
|
| 935 |
|
|
err ("expected bus structure not empty?\n");
|
| 936 |
|
|
retval = -EIO;
|
| 937 |
|
|
goto error;
|
| 938 |
|
|
}
|
| 939 |
|
|
if (rc) {
|
| 940 |
|
|
if (rc == -ENOMEM) {
|
| 941 |
|
|
ibmphp_remove_bus (bus, func->busno);
|
| 942 |
|
|
kfree (amount_needed);
|
| 943 |
|
|
return rc;
|
| 944 |
|
|
}
|
| 945 |
|
|
retval = rc;
|
| 946 |
|
|
goto error;
|
| 947 |
|
|
}
|
| 948 |
|
|
pci_bus_read_config_byte (ibmphp_pci_bus, devfn, PCI_IO_BASE, &io_base);
|
| 949 |
|
|
pci_bus_read_config_word (ibmphp_pci_bus, devfn, PCI_PREF_MEMORY_BASE, &pfmem_base);
|
| 950 |
|
|
|
| 951 |
|
|
if ((io_base & PCI_IO_RANGE_TYPE_MASK) == PCI_IO_RANGE_TYPE_32) {
|
| 952 |
|
|
debug ("io 32\n");
|
| 953 |
|
|
need_io_upper = 1;
|
| 954 |
|
|
}
|
| 955 |
|
|
if ((pfmem_base & PCI_PREF_RANGE_TYPE_MASK) == PCI_PREF_RANGE_TYPE_64) {
|
| 956 |
|
|
debug ("pfmem 64\n");
|
| 957 |
|
|
need_pfmem_upper = 1;
|
| 958 |
|
|
}
|
| 959 |
|
|
|
| 960 |
|
|
if (bus->noIORanges) {
|
| 961 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_IO_BASE, 0x00 | bus->rangeIO->start >> 8);
|
| 962 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_IO_LIMIT, 0x00 | bus->rangeIO->end >> 8);
|
| 963 |
|
|
|
| 964 |
|
|
/* _______________This is for debugging purposes only ____________________
|
| 965 |
|
|
pci_bus_read_config_byte (ibmphp_pci_bus, devfn, PCI_IO_BASE, &temp);
|
| 966 |
|
|
debug ("io_base = %x\n", (temp & PCI_IO_RANGE_TYPE_MASK) << 8);
|
| 967 |
|
|
pci_bus_read_config_byte (ibmphp_pci_bus, devfn, PCI_IO_LIMIT, &temp);
|
| 968 |
|
|
debug ("io_limit = %x\n", (temp & PCI_IO_RANGE_TYPE_MASK) << 8);
|
| 969 |
|
|
________________________________________________________________________*/
|
| 970 |
|
|
|
| 971 |
|
|
if (need_io_upper) { /* since can't support n.e.ways */
|
| 972 |
|
|
pci_bus_write_config_word (ibmphp_pci_bus, devfn, PCI_IO_BASE_UPPER16, 0x0000);
|
| 973 |
|
|
pci_bus_write_config_word (ibmphp_pci_bus, devfn, PCI_IO_LIMIT_UPPER16, 0x0000);
|
| 974 |
|
|
}
|
| 975 |
|
|
} else {
|
| 976 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_IO_BASE, 0x00);
|
| 977 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_IO_LIMIT, 0x00);
|
| 978 |
|
|
}
|
| 979 |
|
|
|
| 980 |
|
|
if (bus->noMemRanges) {
|
| 981 |
|
|
pci_bus_write_config_word (ibmphp_pci_bus, devfn, PCI_MEMORY_BASE, 0x0000 | bus->rangeMem->start >> 16);
|
| 982 |
|
|
pci_bus_write_config_word (ibmphp_pci_bus, devfn, PCI_MEMORY_LIMIT, 0x0000 | bus->rangeMem->end >> 16);
|
| 983 |
|
|
|
| 984 |
|
|
/* ____________________This is for debugging purposes only ________________________
|
| 985 |
|
|
pci_bus_read_config_word (ibmphp_pci_bus, devfn, PCI_MEMORY_BASE, &temp);
|
| 986 |
|
|
debug ("mem_base = %x\n", (temp & PCI_MEMORY_RANGE_TYPE_MASK) << 16);
|
| 987 |
|
|
pci_bus_read_config_word (ibmphp_pci_bus, devfn, PCI_MEMORY_LIMIT, &temp);
|
| 988 |
|
|
debug ("mem_limit = %x\n", (temp & PCI_MEMORY_RANGE_TYPE_MASK) << 16);
|
| 989 |
|
|
__________________________________________________________________________________*/
|
| 990 |
|
|
|
| 991 |
|
|
} else {
|
| 992 |
|
|
pci_bus_write_config_word (ibmphp_pci_bus, devfn, PCI_MEMORY_BASE, 0xffff);
|
| 993 |
|
|
pci_bus_write_config_word (ibmphp_pci_bus, devfn, PCI_MEMORY_LIMIT, 0x0000);
|
| 994 |
|
|
}
|
| 995 |
|
|
if (bus->noPFMemRanges) {
|
| 996 |
|
|
pci_bus_write_config_word (ibmphp_pci_bus, devfn, PCI_PREF_MEMORY_BASE, 0x0000 | bus->rangePFMem->start >> 16);
|
| 997 |
|
|
pci_bus_write_config_word (ibmphp_pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, 0x0000 | bus->rangePFMem->end >> 16);
|
| 998 |
|
|
|
| 999 |
|
|
/* __________________________This is for debugging purposes only _______________________
|
| 1000 |
|
|
pci_bus_read_config_word (ibmphp_pci_bus, devfn, PCI_PREF_MEMORY_BASE, &temp);
|
| 1001 |
|
|
debug ("pfmem_base = %x", (temp & PCI_MEMORY_RANGE_TYPE_MASK) << 16);
|
| 1002 |
|
|
pci_bus_read_config_word (ibmphp_pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, &temp);
|
| 1003 |
|
|
debug ("pfmem_limit = %x\n", (temp & PCI_MEMORY_RANGE_TYPE_MASK) << 16);
|
| 1004 |
|
|
______________________________________________________________________________________*/
|
| 1005 |
|
|
|
| 1006 |
|
|
if (need_pfmem_upper) { /* since can't support n.e.ways */
|
| 1007 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, PCI_PREF_BASE_UPPER32, 0x00000000);
|
| 1008 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, PCI_PREF_LIMIT_UPPER32, 0x00000000);
|
| 1009 |
|
|
}
|
| 1010 |
|
|
} else {
|
| 1011 |
|
|
pci_bus_write_config_word (ibmphp_pci_bus, devfn, PCI_PREF_MEMORY_BASE, 0xffff);
|
| 1012 |
|
|
pci_bus_write_config_word (ibmphp_pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, 0x0000);
|
| 1013 |
|
|
}
|
| 1014 |
|
|
|
| 1015 |
|
|
debug ("b4 writing control information\n");
|
| 1016 |
|
|
|
| 1017 |
|
|
pci_bus_read_config_byte (ibmphp_pci_bus, devfn, PCI_INTERRUPT_PIN, &irq);
|
| 1018 |
|
|
if ((irq > 0x00) && (irq < 0x05))
|
| 1019 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_INTERRUPT_LINE, func->irq[irq - 1]);
|
| 1020 |
|
|
/*
|
| 1021 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_BRIDGE_CONTROL, ctrl);
|
| 1022 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_BRIDGE_CONTROL, PCI_BRIDGE_CTL_PARITY);
|
| 1023 |
|
|
pci_bus_write_config_byte (ibmphp_pci_bus, devfn, PCI_BRIDGE_CONTROL, PCI_BRIDGE_CTL_SERR);
|
| 1024 |
|
|
*/
|
| 1025 |
|
|
|
| 1026 |
|
|
pci_bus_write_config_word (ibmphp_pci_bus, devfn, PCI_COMMAND, DEVICEENABLE);
|
| 1027 |
|
|
pci_bus_write_config_word (ibmphp_pci_bus, devfn, PCI_BRIDGE_CONTROL, 0x07);
|
| 1028 |
|
|
for (i = 0; i < 32; i++) {
|
| 1029 |
|
|
if (amount_needed->devices[i]) {
|
| 1030 |
|
|
debug ("device where devices[i] is 1 = %x\n", i);
|
| 1031 |
|
|
func->devices[i] = 1;
|
| 1032 |
|
|
}
|
| 1033 |
|
|
}
|
| 1034 |
|
|
func->bus = 1; /* For unconfiguring, to indicate it's PPB */
|
| 1035 |
|
|
func_passed = &func;
|
| 1036 |
|
|
debug ("func->busno b4 returning is %x\n", func->busno);
|
| 1037 |
|
|
debug ("func->busno b4 returning in the other structure is %x\n", (*func_passed)->busno);
|
| 1038 |
|
|
kfree (amount_needed);
|
| 1039 |
|
|
return 0;
|
| 1040 |
|
|
} else {
|
| 1041 |
|
|
err ("Configuring bridge was unsuccessful...\n");
|
| 1042 |
|
|
mem_tmp = NULL;
|
| 1043 |
|
|
retval = -EIO;
|
| 1044 |
|
|
goto error;
|
| 1045 |
|
|
}
|
| 1046 |
|
|
|
| 1047 |
|
|
error:
|
| 1048 |
|
|
kfree(amount_needed);
|
| 1049 |
|
|
if (pfmem)
|
| 1050 |
|
|
ibmphp_remove_resource (pfmem);
|
| 1051 |
|
|
if (io)
|
| 1052 |
|
|
ibmphp_remove_resource (io);
|
| 1053 |
|
|
if (mem)
|
| 1054 |
|
|
ibmphp_remove_resource (mem);
|
| 1055 |
|
|
for (i = 0; i < 2; i++) { /* for 2 BARs */
|
| 1056 |
|
|
if (bus_io[i]) {
|
| 1057 |
|
|
ibmphp_remove_resource (bus_io[i]);
|
| 1058 |
|
|
func->io[i] = NULL;
|
| 1059 |
|
|
} else if (bus_pfmem[i]) {
|
| 1060 |
|
|
ibmphp_remove_resource (bus_pfmem[i]);
|
| 1061 |
|
|
func->pfmem[i] = NULL;
|
| 1062 |
|
|
} else if (bus_mem[i]) {
|
| 1063 |
|
|
ibmphp_remove_resource (bus_mem[i]);
|
| 1064 |
|
|
func->mem[i] = NULL;
|
| 1065 |
|
|
}
|
| 1066 |
|
|
}
|
| 1067 |
|
|
return retval;
|
| 1068 |
|
|
}
|
| 1069 |
|
|
|
| 1070 |
|
|
/*****************************************************************************
|
| 1071 |
|
|
* This function adds up the amount of resources needed behind the PPB bridge
|
| 1072 |
|
|
* and passes it to the configure_bridge function
|
| 1073 |
|
|
* Input: bridge function
|
| 1074 |
|
|
* Ouput: amount of resources needed
|
| 1075 |
|
|
*****************************************************************************/
|
| 1076 |
|
|
static struct res_needed *scan_behind_bridge (struct pci_func * func, u8 busno)
|
| 1077 |
|
|
{
|
| 1078 |
|
|
int count, len[6];
|
| 1079 |
|
|
u16 vendor_id;
|
| 1080 |
|
|
u8 hdr_type;
|
| 1081 |
|
|
u8 device, function;
|
| 1082 |
|
|
unsigned int devfn;
|
| 1083 |
|
|
int howmany = 0; /*this is to see if there are any devices behind the bridge */
|
| 1084 |
|
|
|
| 1085 |
|
|
u32 bar[6], class;
|
| 1086 |
|
|
u32 address[] = {
|
| 1087 |
|
|
PCI_BASE_ADDRESS_0,
|
| 1088 |
|
|
PCI_BASE_ADDRESS_1,
|
| 1089 |
|
|
PCI_BASE_ADDRESS_2,
|
| 1090 |
|
|
PCI_BASE_ADDRESS_3,
|
| 1091 |
|
|
PCI_BASE_ADDRESS_4,
|
| 1092 |
|
|
PCI_BASE_ADDRESS_5,
|
| 1093 |
|
|
|
| 1094 |
|
|
};
|
| 1095 |
|
|
struct res_needed *amount;
|
| 1096 |
|
|
|
| 1097 |
|
|
amount = kzalloc(sizeof(*amount), GFP_KERNEL);
|
| 1098 |
|
|
if (amount == NULL)
|
| 1099 |
|
|
return NULL;
|
| 1100 |
|
|
|
| 1101 |
|
|
ibmphp_pci_bus->number = busno;
|
| 1102 |
|
|
|
| 1103 |
|
|
debug ("the bus_no behind the bridge is %x\n", busno);
|
| 1104 |
|
|
debug ("scanning devices behind the bridge...\n");
|
| 1105 |
|
|
for (device = 0; device < 32; device++) {
|
| 1106 |
|
|
amount->devices[device] = 0;
|
| 1107 |
|
|
for (function = 0; function < 8; function++) {
|
| 1108 |
|
|
devfn = PCI_DEVFN(device, function);
|
| 1109 |
|
|
|
| 1110 |
|
|
pci_bus_read_config_word (ibmphp_pci_bus, devfn, PCI_VENDOR_ID, &vendor_id);
|
| 1111 |
|
|
|
| 1112 |
|
|
if (vendor_id != PCI_VENDOR_ID_NOTVALID) {
|
| 1113 |
|
|
/* found correct device!!! */
|
| 1114 |
|
|
howmany++;
|
| 1115 |
|
|
|
| 1116 |
|
|
pci_bus_read_config_byte (ibmphp_pci_bus, devfn, PCI_HEADER_TYPE, &hdr_type);
|
| 1117 |
|
|
pci_bus_read_config_dword (ibmphp_pci_bus, devfn, PCI_CLASS_REVISION, &class);
|
| 1118 |
|
|
|
| 1119 |
|
|
debug ("hdr_type behind the bridge is %x\n", hdr_type);
|
| 1120 |
|
|
if (hdr_type & PCI_HEADER_TYPE_BRIDGE) {
|
| 1121 |
|
|
err ("embedded bridges not supported for hot-plugging.\n");
|
| 1122 |
|
|
amount->not_correct = 1;
|
| 1123 |
|
|
return amount;
|
| 1124 |
|
|
}
|
| 1125 |
|
|
|
| 1126 |
|
|
class >>= 8; /* to take revision out, class = class.subclass.prog i/f */
|
| 1127 |
|
|
if (class == PCI_CLASS_NOT_DEFINED_VGA) {
|
| 1128 |
|
|
err ("The device %x is VGA compatible and as is not supported for hot plugging. "
|
| 1129 |
|
|
"Please choose another device.\n", device);
|
| 1130 |
|
|
amount->not_correct = 1;
|
| 1131 |
|
|
return amount;
|
| 1132 |
|
|
} else if (class == PCI_CLASS_DISPLAY_VGA) {
|
| 1133 |
|
|
err ("The device %x is not supported for hot plugging. "
|
| 1134 |
|
|
"Please choose another device.\n", device);
|
| 1135 |
|
|
amount->not_correct = 1;
|
| 1136 |
|
|
return amount;
|
| 1137 |
|
|
}
|
| 1138 |
|
|
|
| 1139 |
|
|
amount->devices[device] = 1;
|
| 1140 |
|
|
|
| 1141 |
|
|
for (count = 0; address[count]; count++) {
|
| 1142 |
|
|
/* for 6 BARs */
|
| 1143 |
|
|
/*
|
| 1144 |
|
|
pci_bus_read_config_byte (ibmphp_pci_bus, devfn, address[count], &tmp);
|
| 1145 |
|
|
if (tmp & 0x01) // IO
|
| 1146 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, address[count], 0xFFFFFFFD);
|
| 1147 |
|
|
else // MEMORY
|
| 1148 |
|
|
pci_bus_write_config_dword (ibmphp_pci_bus, devfn, address[count], 0xFFFFFFFF);
|
| 1149 |
|
|
*/
|
| 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]);
|
| 1152 |
|
|
|
| 1153 |
|
|
debug ("what is bar[count]? %x, count = %d\n", bar[count], count);
|
| 1154 |
|
|
|
| 1155 |
|
|
if (!bar[count]) /* This BAR is not implemented */
|
| 1156 |
|
|
continue;
|
| 1157 |
|
|
|
| 1158 |
|
|
//tmp_bar = bar[count];
|
| 1159 |
|
|
|
| 1160 |
|
|
debug ("count %d device %x function %x wants %x resources\n", count, device, function, bar[count]);
|
| 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)
|
| 1195 |
|
|
amount->not_correct = 1;
|
| 1196 |
|
|
else
|
| 1197 |
|
|
amount->not_correct = 0;
|
| 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 |
|
|
|
| 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
|
| 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 |
|
|
*/
|
| 1214 |
|
|
static int unconfigure_boot_device (u8 busno, u8 device, u8 function)
|
| 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 |
|
|
|
| 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 |
|
|
|
| 1237 |
|
|
debug ("%s - enter\n", __FUNCTION__);
|
| 1238 |
|
|
|
| 1239 |
|
|
bus = ibmphp_find_res_bus (busno);
|
| 1240 |
|
|
if (!bus) {
|
| 1241 |
|
|
debug ("cannot find corresponding bus.\n");
|
| 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 */
|
| 1248 |
|
|
pci_bus_read_config_dword (ibmphp_pci_bus, devfn, address[count], &start_address);
|
| 1249 |
|
|
|
| 1250 |
|
|
/* We can do this here, b/c by that time the device driver of the card has been stopped */
|
| 1251 |
|
|
|
| 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);
|
| 1255 |
|
|
|
| 1256 |
|
|
debug ("start_address is %x\n", start_address);
|
| 1257 |
|
|
debug ("busno, device, function %x %x %x\n", busno, device, function);
|
| 1258 |
|
|
if (!size) {
|
| 1259 |
|
|
/* This BAR is not implemented */
|
| 1260 |
|
|
debug ("is this bar no implemented?, count = %d\n", count);
|
| 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;
|
| 1270 |
|
|
if (ibmphp_find_resource (bus, start_address, &io, IO) < 0) {
|
| 1271 |
|
|
err ("cannot find corresponding IO resource to remove\n");
|
| 1272 |
|
|
return -EIO;
|
| 1273 |
|
|
}
|
| 1274 |
|
|
debug ("io->start = %x\n", io->start);
|
| 1275 |
|
|
temp_end = io->end;
|
| 1276 |
|
|
start_address = io->end + 1;
|
| 1277 |
|
|
ibmphp_remove_resource (io);
|
| 1278 |
|
|
/* This is needed b/c of the old I/O restrictions in the BIOS */
|
| 1279 |
|
|
while (temp_end < end_address) {
|
| 1280 |
|
|
if (ibmphp_find_resource (bus, start_address, &io, IO) < 0) {
|
| 1281 |
|
|
err ("cannot find corresponding IO resource to remove\n");
|
| 1282 |
|
|
return -EIO;
|
| 1283 |
|
|
}
|
| 1284 |
|
|
debug ("io->start = %x\n", io->start);
|
| 1285 |
|
|
temp_end = io->end;
|
| 1286 |
|
|
start_address = io->end + 1;
|
| 1287 |
|
|
ibmphp_remove_resource (io);
|
| 1288 |
|
|
}
|
| 1289 |
|
|
|
| 1290 |
|
|
/* ????????? DO WE NEED TO WRITE ANYTHING INTO THE PCI CONFIG SPACE BACK ?????????? */
|
| 1291 |
|
|
} else {
|
| 1292 |
|
|
/* This is Memory */
|
| 1293 |
|
|
if (start_address & PCI_BASE_ADDRESS_MEM_PREFETCH) {
|
| 1294 |
|
|
/* pfmem */
|
| 1295 |
|
|
debug ("start address of pfmem is %x\n", start_address);
|
| 1296 |
|
|
start_address &= PCI_BASE_ADDRESS_MEM_MASK;
|
| 1297 |
|
|
|
| 1298 |
|
|
if (ibmphp_find_resource (bus, start_address, &pfmem, PFMEM) < 0) {
|
| 1299 |
|
|
err ("cannot find corresponding PFMEM resource to remove\n");
|
| 1300 |
|
|
return -EIO;
|
| 1301 |
|
|
}
|
| 1302 |
|
|
if (pfmem) {
|
| 1303 |
|
|
debug ("pfmem->start = %x\n", pfmem->start);
|
| 1304 |
|
|
|
| 1305 |
|
|
ibmphp_remove_resource(pfmem);
|
| 1306 |
|
|
}
|
| 1307 |
|
|
} else {
|
| 1308 |
|
|
/* regular memory */
|
| 1309 |
|
|
debug ("start address of mem is %x\n", start_address);
|
| 1310 |
|
|
start_address &= PCI_BASE_ADDRESS_MEM_MASK;
|
| 1311 |
|
|
|
| 1312 |
|
|
if (ibmphp_find_resource (bus, start_address, &mem, MEM) < 0) {
|
| 1313 |
|
|
err ("cannot find corresponding MEM resource to remove\n");
|
| 1314 |
|
|
return -EIO;
|
| 1315 |
|
|
}
|
| 1316 |
|
|
if (mem) {
|
| 1317 |
|
|
debug ("mem->start = %x\n", mem->start);
|
| 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 |
|
|
|
| 1332 |
|
|
static int unconfigure_boot_bridge (u8 busno, u8 device, u8 function)
|
| 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 |
|
|
|
| 1346 |
|
|
};
|
| 1347 |
|
|
unsigned int devfn;
|
| 1348 |
|
|
|
| 1349 |
|
|
devfn = PCI_DEVFN(device, function);
|
| 1350 |
|
|
ibmphp_pci_bus->number = busno;
|
| 1351 |
|
|
bus_no = (int) busno;
|
| 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", __FUNCTION__, busno, pri_number);
|
| 1355 |
|
|
|
| 1356 |
|
|
pci_bus_read_config_byte (ibmphp_pci_bus, devfn, PCI_SECONDARY_BUS, &sec_number);
|
| 1357 |
|
|
debug ("sec_number is %x\n", sec_number);
|
| 1358 |
|
|
sec_no = (int) sec_number;
|
| 1359 |
|
|
pri_no = (int) pri_number;
|
| 1360 |
|
|
if (pri_no != bus_no) {
|
| 1361 |
|
|
err ("primary numbers in our structures and pci config space don't match.\n");
|
| 1362 |
|
|
return -EINVAL;
|
| 1363 |
|
|
}
|
| 1364 |
|
|
|
| 1365 |
|
|
pci_bus_read_config_byte (ibmphp_pci_bus, devfn, PCI_SUBORDINATE_BUS, &sub_number);
|
| 1366 |
|
|
sub_no = (int) sub_number;
|
| 1367 |
|
|
debug ("sub_no is %d, sec_no is %d\n", sub_no, sec_no);
|
| 1368 |
|
|
if (sec_no != sub_number) {
|
| 1369 |
|
|
err ("there're more buses behind this bridge. Hot removal is not supported. Please choose another card\n");
|
| 1370 |
|
|
return -ENODEV;
|
| 1371 |
|
|
}
|
| 1372 |
|
|
|
| 1373 |
|
|
bus = ibmphp_find_res_bus (sec_number);
|
| 1374 |
|
|
if (!bus) {
|
| 1375 |
|
|
err ("cannot find Bus structure for the bridged device\n");
|
| 1376 |
|
|
return -EINVAL;
|
| 1377 |
|
|
}
|
| 1378 |
|
|
debug("bus->busno is %x\n", bus->busno);
|
| 1379 |
|
|
debug("sec_number is %x\n", sec_number);
|
| 1380 |
|
|
|
| 1381 |
|
|
ibmphp_remove_bus (bus, busno);
|
| 1382 |
|
|
|
| 1383 |
|
|
for (count = 0; address[count]; count++) {
|
| 1384 |
|
|
/* for 2 BARs */
|
| 1385 |
|
|
pci_bus_read_config_dword (ibmphp_pci_bus, devfn, address[count], &start_address);
|
| 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;
|
| 1397 |
|
|
if (ibmphp_find_resource (bus, start_address, &io, IO) < 0) {
|
| 1398 |
|
|
err ("cannot find corresponding IO resource to remove\n");
|
| 1399 |
|
|
return -EIO;
|
| 1400 |
|
|
}
|
| 1401 |
|
|
if (io)
|
| 1402 |
|
|
debug ("io->start = %x\n", io->start);
|
| 1403 |
|
|
|
| 1404 |
|
|
ibmphp_remove_resource (io);
|
| 1405 |
|
|
|
| 1406 |
|
|
/* ????????? DO WE NEED TO WRITE ANYTHING INTO THE PCI CONFIG SPACE BACK ?????????? */
|
| 1407 |
|
|
} else {
|
| 1408 |
|
|
/* This is Memory */
|
| 1409 |
|
|
if (start_address & PCI_BASE_ADDRESS_MEM_PREFETCH) {
|
| 1410 |
|
|
/* pfmem */
|
| 1411 |
|
|
start_address &= PCI_BASE_ADDRESS_MEM_MASK;
|
| 1412 |
|
|
if (ibmphp_find_resource (bus, start_address, &pfmem, PFMEM) < 0) {
|
| 1413 |
|
|
err ("cannot find corresponding PFMEM resource to remove\n");
|
| 1414 |
|
|
return -EINVAL;
|
| 1415 |
|
|
}
|
| 1416 |
|
|
if (pfmem) {
|
| 1417 |
|
|
debug ("pfmem->start = %x\n", pfmem->start);
|
| 1418 |
|
|
|
| 1419 |
|
|
ibmphp_remove_resource(pfmem);
|
| 1420 |
|
|
}
|
| 1421 |
|
|
} else {
|
| 1422 |
|
|
/* regular memory */
|
| 1423 |
|
|
start_address &= PCI_BASE_ADDRESS_MEM_MASK;
|
| 1424 |
|
|
if (ibmphp_find_resource (bus, start_address, &mem, MEM) < 0) {
|
| 1425 |
|
|
err ("cannot find corresponding MEM resource to remove\n");
|
| 1426 |
|
|
return -EINVAL;
|
| 1427 |
|
|
}
|
| 1428 |
|
|
if (mem) {
|
| 1429 |
|
|
debug ("mem->start = %x\n", mem->start);
|
| 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 */
|
| 1440 |
|
|
debug ("%s - exiting, returning success\n", __FUNCTION__);
|
| 1441 |
|
|
return 0;
|
| 1442 |
|
|
}
|
| 1443 |
|
|
|
| 1444 |
|
|
static int unconfigure_boot_card (struct slot *slot_cur)
|
| 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 |
|
|
|
| 1456 |
|
|
debug ("%s - enter\n", __FUNCTION__);
|
| 1457 |
|
|
|
| 1458 |
|
|
device = slot_cur->device;
|
| 1459 |
|
|
busno = slot_cur->bus;
|
| 1460 |
|
|
|
| 1461 |
|
|
debug ("b4 for loop, device is %x\n", device);
|
| 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 |
|
|
|
| 1467 |
|
|
pci_bus_read_config_word (ibmphp_pci_bus, devfn, PCI_VENDOR_ID, &vendor_id);
|
| 1468 |
|
|
|
| 1469 |
|
|
if (vendor_id != PCI_VENDOR_ID_NOTVALID) {
|
| 1470 |
|
|
/* found correct device!!! */
|
| 1471 |
|
|
++valid_device;
|
| 1472 |
|
|
|
| 1473 |
|
|
debug ("%s - found correct device\n", __FUNCTION__);
|
| 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 |
|
|
|
| 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);
|
| 1482 |
|
|
|
| 1483 |
|
|
debug ("hdr_type %x, class %x\n", hdr_type, class);
|
| 1484 |
|
|
class >>= 8; /* to take revision out, class = class.subclass.prog i/f */
|
| 1485 |
|
|
if (class == PCI_CLASS_NOT_DEFINED_VGA) {
|
| 1486 |
|
|
err ("The device %x function %x is VGA compatible and is not supported for hot removing. "
|
| 1487 |
|
|
"Please choose another device.\n", device, function);
|
| 1488 |
|
|
return -ENODEV;
|
| 1489 |
|
|
} else if (class == PCI_CLASS_DISPLAY_VGA) {
|
| 1490 |
|
|
err ("The device %x function %x is not supported for hot removing. "
|
| 1491 |
|
|
"Please choose another device.\n", device, function);
|
| 1492 |
|
|
return -ENODEV;
|
| 1493 |
|
|
}
|
| 1494 |
|
|
|
| 1495 |
|
|
switch (hdr_type) {
|
| 1496 |
|
|
case PCI_HEADER_TYPE_NORMAL:
|
| 1497 |
|
|
rc = unconfigure_boot_device (busno, device, function);
|
| 1498 |
|
|
if (rc) {
|
| 1499 |
|
|
err ("was not able to unconfigure device %x func %x on bus %x. bailing out...\n",
|
| 1500 |
|
|
device, function, busno);
|
| 1501 |
|
|
return rc;
|
| 1502 |
|
|
}
|
| 1503 |
|
|
function = 0x8;
|
| 1504 |
|
|
break;
|
| 1505 |
|
|
case PCI_HEADER_TYPE_MULTIDEVICE:
|
| 1506 |
|
|
rc = unconfigure_boot_device (busno, device, function);
|
| 1507 |
|
|
if (rc) {
|
| 1508 |
|
|
err ("was not able to unconfigure device %x func %x on bus %x. bailing out...\n",
|
| 1509 |
|
|
device, function, busno);
|
| 1510 |
|
|
return rc;
|
| 1511 |
|
|
}
|
| 1512 |
|
|
break;
|
| 1513 |
|
|
case PCI_HEADER_TYPE_BRIDGE:
|
| 1514 |
|
|
class >>= 8;
|
| 1515 |
|
|
if (class != PCI_CLASS_BRIDGE_PCI) {
|
| 1516 |
|
|
err ("This device %x function %x is not PCI-to-PCI bridge, "
|
| 1517 |
|
|
"and is not supported for hot-removing. "
|
| 1518 |
|
|
"Please try another card.\n", device, function);
|
| 1519 |
|
|
return -ENODEV;
|
| 1520 |
|
|
}
|
| 1521 |
|
|
rc = unconfigure_boot_bridge (busno, device, function);
|
| 1522 |
|
|
if (rc != 0) {
|
| 1523 |
|
|
err ("was not able to hot-remove PPB properly.\n");
|
| 1524 |
|
|
return rc;
|
| 1525 |
|
|
}
|
| 1526 |
|
|
|
| 1527 |
|
|
function = 0x8;
|
| 1528 |
|
|
break;
|
| 1529 |
|
|
case PCI_HEADER_TYPE_MULTIBRIDGE:
|
| 1530 |
|
|
class >>= 8;
|
| 1531 |
|
|
if (class != PCI_CLASS_BRIDGE_PCI) {
|
| 1532 |
|
|
err ("This device %x function %x is not PCI-to-PCI bridge, "
|
| 1533 |
|
|
"and is not supported for hot-removing. "
|
| 1534 |
|
|
"Please try another card.\n", device, function);
|
| 1535 |
|
|
return -ENODEV;
|
| 1536 |
|
|
}
|
| 1537 |
|
|
rc = unconfigure_boot_bridge (busno, device, function);
|
| 1538 |
|
|
if (rc != 0) {
|
| 1539 |
|
|
err ("was not able to hot-remove PPB properly.\n");
|
| 1540 |
|
|
return rc;
|
| 1541 |
|
|
}
|
| 1542 |
|
|
break;
|
| 1543 |
|
|
default:
|
| 1544 |
|
|
err ("MAJOR PROBLEM!!!! Cannot read device's header\n");
|
| 1545 |
|
|
return -1;
|
| 1546 |
|
|
break;
|
| 1547 |
|
|
} /* end of switch */
|
| 1548 |
|
|
} /* end of valid device */
|
| 1549 |
|
|
} /* end of for */
|
| 1550 |
|
|
|
| 1551 |
|
|
if (!valid_device) {
|
| 1552 |
|
|
err ("Could not find device to unconfigure. Or could not read the card.\n");
|
| 1553 |
|
|
return -1;
|
| 1554 |
|
|
}
|
| 1555 |
|
|
return 0;
|
| 1556 |
|
|
}
|
| 1557 |
|
|
|
| 1558 |
|
|
/*
|
| 1559 |
|
|
* free the resources of the card (multi, single, or bridged)
|
| 1560 |
|
|
* Parameters: slot, flag to say if this is for removing entire module or just
|
| 1561 |
|
|
* unconfiguring the device
|
| 1562 |
|
|
* TO DO: will probably need to add some code in case there was some resource,
|
| 1563 |
|
|
* to remove it... this is from when we have errors in the configure_card...
|
| 1564 |
|
|
* !!!!!!!!!!!!!!!!!!!!!!!!!FOR BUSES!!!!!!!!!!!!
|
| 1565 |
|
|
* Returns: 0, -1, -ENODEV
|
| 1566 |
|
|
*/
|
| 1567 |
|
|
int ibmphp_unconfigure_card (struct slot **slot_cur, int the_end)
|
| 1568 |
|
|
{
|
| 1569 |
|
|
int i;
|
| 1570 |
|
|
int count;
|
| 1571 |
|
|
int rc;
|
| 1572 |
|
|
struct slot *sl = *slot_cur;
|
| 1573 |
|
|
struct pci_func *cur_func = NULL;
|
| 1574 |
|
|
struct pci_func *temp_func;
|
| 1575 |
|
|
|
| 1576 |
|
|
debug ("%s - enter\n", __FUNCTION__);
|
| 1577 |
|
|
|
| 1578 |
|
|
if (!the_end) {
|
| 1579 |
|
|
/* Need to unconfigure the card */
|
| 1580 |
|
|
rc = unconfigure_boot_card (sl);
|
| 1581 |
|
|
if ((rc == -ENODEV) || (rc == -EIO) || (rc == -EINVAL)) {
|
| 1582 |
|
|
/* In all other cases, will still need to get rid of func structure if it exists */
|
| 1583 |
|
|
return rc;
|
| 1584 |
|
|
}
|
| 1585 |
|
|
}
|
| 1586 |
|
|
|
| 1587 |
|
|
if (sl->func) {
|
| 1588 |
|
|
cur_func = sl->func;
|
| 1589 |
|
|
while (cur_func) {
|
| 1590 |
|
|
/* TO DO: WILL MOST LIKELY NEED TO GET RID OF THE BUS STRUCTURE FROM RESOURCES AS WELL */
|
| 1591 |
|
|
if (cur_func->bus) {
|
| 1592 |
|
|
/* in other words, it's a PPB */
|
| 1593 |
|
|
count = 2;
|
| 1594 |
|
|
} else {
|
| 1595 |
|
|
count = 6;
|
| 1596 |
|
|
}
|
| 1597 |
|
|
|
| 1598 |
|
|
for (i = 0; i < count; i++) {
|
| 1599 |
|
|
if (cur_func->io[i]) {
|
| 1600 |
|
|
debug ("io[%d] exists\n", i);
|
| 1601 |
|
|
if (the_end > 0)
|
| 1602 |
|
|
ibmphp_remove_resource (cur_func->io[i]);
|
| 1603 |
|
|
cur_func->io[i] = NULL;
|
| 1604 |
|
|
}
|
| 1605 |
|
|
if (cur_func->mem[i]) {
|
| 1606 |
|
|
debug ("mem[%d] exists\n", i);
|
| 1607 |
|
|
if (the_end > 0)
|
| 1608 |
|
|
ibmphp_remove_resource (cur_func->mem[i]);
|
| 1609 |
|
|
cur_func->mem[i] = NULL;
|
| 1610 |
|
|
}
|
| 1611 |
|
|
if (cur_func->pfmem[i]) {
|
| 1612 |
|
|
debug ("pfmem[%d] exists\n", i);
|
| 1613 |
|
|
if (the_end > 0)
|
| 1614 |
|
|
ibmphp_remove_resource (cur_func->pfmem[i]);
|
| 1615 |
|
|
cur_func->pfmem[i] = NULL;
|
| 1616 |
|
|
}
|
| 1617 |
|
|
}
|
| 1618 |
|
|
|
| 1619 |
|
|
temp_func = cur_func->next;
|
| 1620 |
|
|
kfree (cur_func);
|
| 1621 |
|
|
cur_func = temp_func;
|
| 1622 |
|
|
}
|
| 1623 |
|
|
}
|
| 1624 |
|
|
|
| 1625 |
|
|
sl->func = NULL;
|
| 1626 |
|
|
*slot_cur = sl;
|
| 1627 |
|
|
debug ("%s - exit\n", __FUNCTION__);
|
| 1628 |
|
|
return 0;
|
| 1629 |
|
|
}
|
| 1630 |
|
|
|
| 1631 |
|
|
/*
|
| 1632 |
|
|
* add a new bus resulting from hot-plugging a PPB bridge with devices
|
| 1633 |
|
|
*
|
| 1634 |
|
|
* Input: bus and the amount of resources needed (we know we can assign those,
|
| 1635 |
|
|
* since they've been checked already
|
| 1636 |
|
|
* Output: bus added to the correct spot
|
| 1637 |
|
|
* 0, -1, error
|
| 1638 |
|
|
*/
|
| 1639 |
|
|
static int add_new_bus (struct bus_node *bus, struct resource_node *io, struct resource_node *mem, struct resource_node *pfmem, u8 parent_busno)
|
| 1640 |
|
|
{
|
| 1641 |
|
|
struct range_node *io_range = NULL;
|
| 1642 |
|
|
struct range_node *mem_range = NULL;
|
| 1643 |
|
|
struct range_node *pfmem_range = NULL;
|
| 1644 |
|
|
struct bus_node *cur_bus = NULL;
|
| 1645 |
|
|
|
| 1646 |
|
|
/* Trying to find the parent bus number */
|
| 1647 |
|
|
if (parent_busno != 0xFF) {
|
| 1648 |
|
|
cur_bus = ibmphp_find_res_bus (parent_busno);
|
| 1649 |
|
|
if (!cur_bus) {
|
| 1650 |
|
|
err ("strange, cannot find bus which is supposed to be at the system... something is terribly wrong...\n");
|
| 1651 |
|
|
return -ENODEV;
|
| 1652 |
|
|
}
|
| 1653 |
|
|
|
| 1654 |
|
|
list_add (&bus->bus_list, &cur_bus->bus_list);
|
| 1655 |
|
|
}
|
| 1656 |
|
|
if (io) {
|
| 1657 |
|
|
io_range = kzalloc(sizeof(*io_range), GFP_KERNEL);
|
| 1658 |
|
|
if (!io_range) {
|
| 1659 |
|
|
err ("out of system memory\n");
|
| 1660 |
|
|
return -ENOMEM;
|
| 1661 |
|
|
}
|
| 1662 |
|
|
io_range->start = io->start;
|
| 1663 |
|
|
io_range->end = io->end;
|
| 1664 |
|
|
io_range->rangeno = 1;
|
| 1665 |
|
|
bus->noIORanges = 1;
|
| 1666 |
|
|
bus->rangeIO = io_range;
|
| 1667 |
|
|
}
|
| 1668 |
|
|
if (mem) {
|
| 1669 |
|
|
mem_range = kzalloc(sizeof(*mem_range), GFP_KERNEL);
|
| 1670 |
|
|
if (!mem_range) {
|
| 1671 |
|
|
err ("out of system memory\n");
|
| 1672 |
|
|
return -ENOMEM;
|
| 1673 |
|
|
}
|
| 1674 |
|
|
mem_range->start = mem->start;
|
| 1675 |
|
|
mem_range->end = mem->end;
|
| 1676 |
|
|
mem_range->rangeno = 1;
|
| 1677 |
|
|
bus->noMemRanges = 1;
|
| 1678 |
|
|
bus->rangeMem = mem_range;
|
| 1679 |
|
|
}
|
| 1680 |
|
|
if (pfmem) {
|
| 1681 |
|
|
pfmem_range = kzalloc(sizeof(*pfmem_range), GFP_KERNEL);
|
| 1682 |
|
|
if (!pfmem_range) {
|
| 1683 |
|
|
err ("out of system memory\n");
|
| 1684 |
|
|
return -ENOMEM;
|
| 1685 |
|
|
}
|
| 1686 |
|
|
pfmem_range->start = pfmem->start;
|
| 1687 |
|
|
pfmem_range->end = pfmem->end;
|
| 1688 |
|
|
pfmem_range->rangeno = 1;
|
| 1689 |
|
|
bus->noPFMemRanges = 1;
|
| 1690 |
|
|
bus->rangePFMem = pfmem_range;
|
| 1691 |
|
|
}
|
| 1692 |
|
|
return 0;
|
| 1693 |
|
|
}
|
| 1694 |
|
|
|
| 1695 |
|
|
/*
|
| 1696 |
|
|
* find the 1st available bus number for PPB to set as its secondary bus
|
| 1697 |
|
|
* Parameters: bus_number of the primary bus
|
| 1698 |
|
|
* Returns: bus_number of the secondary bus or 0xff in case of failure
|
| 1699 |
|
|
*/
|
| 1700 |
|
|
static u8 find_sec_number (u8 primary_busno, u8 slotno)
|
| 1701 |
|
|
{
|
| 1702 |
|
|
int min, max;
|
| 1703 |
|
|
u8 busno;
|
| 1704 |
|
|
struct bus_info *bus;
|
| 1705 |
|
|
struct bus_node *bus_cur;
|
| 1706 |
|
|
|
| 1707 |
|
|
bus = ibmphp_find_same_bus_num (primary_busno);
|
| 1708 |
|
|
if (!bus) {
|
| 1709 |
|
|
err ("cannot get slot range of the bus from the BIOS\n");
|
| 1710 |
|
|
return 0xff;
|
| 1711 |
|
|
}
|
| 1712 |
|
|
max = bus->slot_max;
|
| 1713 |
|
|
min = bus->slot_min;
|
| 1714 |
|
|
if ((slotno > max) || (slotno < min)) {
|
| 1715 |
|
|
err ("got the wrong range\n");
|
| 1716 |
|
|
return 0xff;
|
| 1717 |
|
|
}
|
| 1718 |
|
|
busno = (u8) (slotno - (u8) min);
|
| 1719 |
|
|
busno += primary_busno + 0x01;
|
| 1720 |
|
|
bus_cur = ibmphp_find_res_bus (busno);
|
| 1721 |
|
|
/* either there is no such bus number, or there are no ranges, which
|
| 1722 |
|
|
* can only happen if we removed the bridged device in previous load
|
| 1723 |
|
|
* of the driver, and now only have the skeleton bus struct
|
| 1724 |
|
|
*/
|
| 1725 |
|
|
if ((!bus_cur) || (!(bus_cur->rangeIO) && !(bus_cur->rangeMem) && !(bus_cur->rangePFMem)))
|
| 1726 |
|
|
return busno;
|
| 1727 |
|
|
return 0xff;
|
| 1728 |
|
|
}
|
| 1729 |
|
|
|
