Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * pci.c - Low-Level PCI Access in IA-64 |
| 3 | * |
| 4 | * Derived from bios32.c of i386 tree. |
| 5 | * |
| 6 | * (c) Copyright 2002, 2005 Hewlett-Packard Development Company, L.P. |
| 7 | * David Mosberger-Tang <davidm@hpl.hp.com> |
| 8 | * Bjorn Helgaas <bjorn.helgaas@hp.com> |
| 9 | * Copyright (C) 2004 Silicon Graphics, Inc. |
| 10 | * |
| 11 | * Note: Above list of copyright holders is incomplete... |
| 12 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | |
| 14 | #include <linux/acpi.h> |
| 15 | #include <linux/types.h> |
| 16 | #include <linux/kernel.h> |
| 17 | #include <linux/pci.h> |
| 18 | #include <linux/init.h> |
| 19 | #include <linux/ioport.h> |
| 20 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <linux/spinlock.h> |
John Keller | 175add1 | 2008-11-24 16:47:17 -0600 | [diff] [blame] | 22 | #include <linux/bootmem.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | |
| 24 | #include <asm/machvec.h> |
| 25 | #include <asm/page.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <asm/system.h> |
| 27 | #include <asm/io.h> |
| 28 | #include <asm/sal.h> |
| 29 | #include <asm/smp.h> |
| 30 | #include <asm/irq.h> |
| 31 | #include <asm/hw_irq.h> |
| 32 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | /* |
| 34 | * Low-level SAL-based PCI configuration access functions. Note that SAL |
| 35 | * calls are already serialized (via sal_lock), so we don't need another |
| 36 | * synchronization mechanism here. |
| 37 | */ |
| 38 | |
| 39 | #define PCI_SAL_ADDRESS(seg, bus, devfn, reg) \ |
| 40 | (((u64) seg << 24) | (bus << 16) | (devfn << 8) | (reg)) |
| 41 | |
| 42 | /* SAL 3.2 adds support for extended config space. */ |
| 43 | |
| 44 | #define PCI_SAL_EXT_ADDRESS(seg, bus, devfn, reg) \ |
| 45 | (((u64) seg << 28) | (bus << 20) | (devfn << 12) | (reg)) |
| 46 | |
Matthew Wilcox | b6ce068 | 2008-02-10 09:45:28 -0500 | [diff] [blame] | 47 | int raw_pci_read(unsigned int seg, unsigned int bus, unsigned int devfn, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | int reg, int len, u32 *value) |
| 49 | { |
| 50 | u64 addr, data = 0; |
| 51 | int mode, result; |
| 52 | |
| 53 | if (!value || (seg > 65535) || (bus > 255) || (devfn > 255) || (reg > 4095)) |
| 54 | return -EINVAL; |
| 55 | |
| 56 | if ((seg | reg) <= 255) { |
| 57 | addr = PCI_SAL_ADDRESS(seg, bus, devfn, reg); |
| 58 | mode = 0; |
| 59 | } else { |
| 60 | addr = PCI_SAL_EXT_ADDRESS(seg, bus, devfn, reg); |
| 61 | mode = 1; |
| 62 | } |
| 63 | result = ia64_sal_pci_config_read(addr, mode, len, &data); |
| 64 | if (result != 0) |
| 65 | return -EINVAL; |
| 66 | |
| 67 | *value = (u32) data; |
| 68 | return 0; |
| 69 | } |
| 70 | |
Matthew Wilcox | b6ce068 | 2008-02-10 09:45:28 -0500 | [diff] [blame] | 71 | int raw_pci_write(unsigned int seg, unsigned int bus, unsigned int devfn, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | int reg, int len, u32 value) |
| 73 | { |
| 74 | u64 addr; |
| 75 | int mode, result; |
| 76 | |
| 77 | if ((seg > 65535) || (bus > 255) || (devfn > 255) || (reg > 4095)) |
| 78 | return -EINVAL; |
| 79 | |
| 80 | if ((seg | reg) <= 255) { |
| 81 | addr = PCI_SAL_ADDRESS(seg, bus, devfn, reg); |
| 82 | mode = 0; |
| 83 | } else { |
| 84 | addr = PCI_SAL_EXT_ADDRESS(seg, bus, devfn, reg); |
| 85 | mode = 1; |
| 86 | } |
| 87 | result = ia64_sal_pci_config_write(addr, mode, len, value); |
| 88 | if (result != 0) |
| 89 | return -EINVAL; |
| 90 | return 0; |
| 91 | } |
| 92 | |
Matthew Wilcox | b6ce068 | 2008-02-10 09:45:28 -0500 | [diff] [blame] | 93 | static int pci_read(struct pci_bus *bus, unsigned int devfn, int where, |
| 94 | int size, u32 *value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | { |
Matthew Wilcox | b6ce068 | 2008-02-10 09:45:28 -0500 | [diff] [blame] | 96 | return raw_pci_read(pci_domain_nr(bus), bus->number, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | devfn, where, size, value); |
| 98 | } |
| 99 | |
Matthew Wilcox | b6ce068 | 2008-02-10 09:45:28 -0500 | [diff] [blame] | 100 | static int pci_write(struct pci_bus *bus, unsigned int devfn, int where, |
| 101 | int size, u32 value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | { |
Matthew Wilcox | b6ce068 | 2008-02-10 09:45:28 -0500 | [diff] [blame] | 103 | return raw_pci_write(pci_domain_nr(bus), bus->number, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | devfn, where, size, value); |
| 105 | } |
| 106 | |
| 107 | struct pci_ops pci_root_ops = { |
| 108 | .read = pci_read, |
| 109 | .write = pci_write, |
| 110 | }; |
| 111 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | /* Called by ACPI when it finds a new root bus. */ |
| 113 | |
| 114 | static struct pci_controller * __devinit |
| 115 | alloc_pci_controller (int seg) |
| 116 | { |
| 117 | struct pci_controller *controller; |
| 118 | |
Yan Burman | 52fd910 | 2006-12-04 14:58:35 -0800 | [diff] [blame] | 119 | controller = kzalloc(sizeof(*controller), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | if (!controller) |
| 121 | return NULL; |
| 122 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | controller->segment = seg; |
Christoph Lameter | 514604c | 2005-07-07 16:59:00 -0700 | [diff] [blame] | 124 | controller->node = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | return controller; |
| 126 | } |
| 127 | |
Bjorn Helgaas | 4f41d5a | 2005-11-07 15:13:59 -0700 | [diff] [blame] | 128 | struct pci_root_info { |
| 129 | struct pci_controller *controller; |
| 130 | char *name; |
| 131 | }; |
| 132 | |
| 133 | static unsigned int |
| 134 | new_space (u64 phys_base, int sparse) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | { |
Bjorn Helgaas | 4f41d5a | 2005-11-07 15:13:59 -0700 | [diff] [blame] | 136 | u64 mmio_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | int i; |
| 138 | |
Bjorn Helgaas | 4f41d5a | 2005-11-07 15:13:59 -0700 | [diff] [blame] | 139 | if (phys_base == 0) |
| 140 | return 0; /* legacy I/O port space */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | |
Bjorn Helgaas | 4f41d5a | 2005-11-07 15:13:59 -0700 | [diff] [blame] | 142 | mmio_base = (u64) ioremap(phys_base, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | for (i = 0; i < num_io_spaces; i++) |
Bjorn Helgaas | 4f41d5a | 2005-11-07 15:13:59 -0700 | [diff] [blame] | 144 | if (io_space[i].mmio_base == mmio_base && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | io_space[i].sparse == sparse) |
Bjorn Helgaas | 4f41d5a | 2005-11-07 15:13:59 -0700 | [diff] [blame] | 146 | return i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | |
| 148 | if (num_io_spaces == MAX_IO_SPACES) { |
Bjorn Helgaas | 4f41d5a | 2005-11-07 15:13:59 -0700 | [diff] [blame] | 149 | printk(KERN_ERR "PCI: Too many IO port spaces " |
| 150 | "(MAX_IO_SPACES=%lu)\n", MAX_IO_SPACES); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | return ~0; |
| 152 | } |
| 153 | |
| 154 | i = num_io_spaces++; |
Bjorn Helgaas | 4f41d5a | 2005-11-07 15:13:59 -0700 | [diff] [blame] | 155 | io_space[i].mmio_base = mmio_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | io_space[i].sparse = sparse; |
| 157 | |
Bjorn Helgaas | 4f41d5a | 2005-11-07 15:13:59 -0700 | [diff] [blame] | 158 | return i; |
| 159 | } |
| 160 | |
| 161 | static u64 __devinit |
| 162 | add_io_space (struct pci_root_info *info, struct acpi_resource_address64 *addr) |
| 163 | { |
| 164 | struct resource *resource; |
| 165 | char *name; |
Matthew Wilcox | e088a4a | 2009-05-22 13:49:49 -0700 | [diff] [blame] | 166 | unsigned long base, min, max, base_port; |
Bjorn Helgaas | 4f41d5a | 2005-11-07 15:13:59 -0700 | [diff] [blame] | 167 | unsigned int sparse = 0, space_nr, len; |
| 168 | |
| 169 | resource = kzalloc(sizeof(*resource), GFP_KERNEL); |
| 170 | if (!resource) { |
| 171 | printk(KERN_ERR "PCI: No memory for %s I/O port space\n", |
| 172 | info->name); |
| 173 | goto out; |
| 174 | } |
| 175 | |
| 176 | len = strlen(info->name) + 32; |
| 177 | name = kzalloc(len, GFP_KERNEL); |
| 178 | if (!name) { |
| 179 | printk(KERN_ERR "PCI: No memory for %s I/O port space name\n", |
| 180 | info->name); |
| 181 | goto free_resource; |
| 182 | } |
| 183 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 184 | min = addr->minimum; |
Bjorn Helgaas | 4f41d5a | 2005-11-07 15:13:59 -0700 | [diff] [blame] | 185 | max = min + addr->address_length - 1; |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 186 | if (addr->info.io.translation_type == ACPI_SPARSE_TRANSLATION) |
Bjorn Helgaas | 4f41d5a | 2005-11-07 15:13:59 -0700 | [diff] [blame] | 187 | sparse = 1; |
| 188 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 189 | space_nr = new_space(addr->translation_offset, sparse); |
Bjorn Helgaas | 4f41d5a | 2005-11-07 15:13:59 -0700 | [diff] [blame] | 190 | if (space_nr == ~0) |
| 191 | goto free_name; |
| 192 | |
| 193 | base = __pa(io_space[space_nr].mmio_base); |
| 194 | base_port = IO_SPACE_BASE(space_nr); |
| 195 | snprintf(name, len, "%s I/O Ports %08lx-%08lx", info->name, |
| 196 | base_port + min, base_port + max); |
| 197 | |
| 198 | /* |
| 199 | * The SDM guarantees the legacy 0-64K space is sparse, but if the |
| 200 | * mapping is done by the processor (not the bridge), ACPI may not |
| 201 | * mark it as sparse. |
| 202 | */ |
| 203 | if (space_nr == 0) |
| 204 | sparse = 1; |
| 205 | |
| 206 | resource->name = name; |
| 207 | resource->flags = IORESOURCE_MEM; |
| 208 | resource->start = base + (sparse ? IO_SPACE_SPARSE_ENCODING(min) : min); |
| 209 | resource->end = base + (sparse ? IO_SPACE_SPARSE_ENCODING(max) : max); |
| 210 | insert_resource(&iomem_resource, resource); |
| 211 | |
| 212 | return base_port; |
| 213 | |
| 214 | free_name: |
| 215 | kfree(name); |
| 216 | free_resource: |
| 217 | kfree(resource); |
| 218 | out: |
| 219 | return ~0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | } |
| 221 | |
Bjorn Helgaas | 463eb29 | 2005-09-23 11:39:07 -0600 | [diff] [blame] | 222 | static acpi_status __devinit resource_to_window(struct acpi_resource *resource, |
| 223 | struct acpi_resource_address64 *addr) |
| 224 | { |
| 225 | acpi_status status; |
| 226 | |
| 227 | /* |
| 228 | * We're only interested in _CRS descriptors that are |
| 229 | * - address space descriptors for memory or I/O space |
| 230 | * - non-zero size |
| 231 | * - producers, i.e., the address space is routed downstream, |
| 232 | * not consumed by the bridge itself |
| 233 | */ |
| 234 | status = acpi_resource_to_address64(resource, addr); |
| 235 | if (ACPI_SUCCESS(status) && |
| 236 | (addr->resource_type == ACPI_MEMORY_RANGE || |
| 237 | addr->resource_type == ACPI_IO_RANGE) && |
| 238 | addr->address_length && |
| 239 | addr->producer_consumer == ACPI_PRODUCER) |
| 240 | return AE_OK; |
| 241 | |
| 242 | return AE_ERROR; |
| 243 | } |
| 244 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | static acpi_status __devinit |
| 246 | count_window (struct acpi_resource *resource, void *data) |
| 247 | { |
| 248 | unsigned int *windows = (unsigned int *) data; |
| 249 | struct acpi_resource_address64 addr; |
| 250 | acpi_status status; |
| 251 | |
Bjorn Helgaas | 463eb29 | 2005-09-23 11:39:07 -0600 | [diff] [blame] | 252 | status = resource_to_window(resource, &addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | if (ACPI_SUCCESS(status)) |
Bjorn Helgaas | 463eb29 | 2005-09-23 11:39:07 -0600 | [diff] [blame] | 254 | (*windows)++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
| 256 | return AE_OK; |
| 257 | } |
| 258 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | static __devinit acpi_status add_window(struct acpi_resource *res, void *data) |
| 260 | { |
| 261 | struct pci_root_info *info = data; |
| 262 | struct pci_window *window; |
| 263 | struct acpi_resource_address64 addr; |
| 264 | acpi_status status; |
| 265 | unsigned long flags, offset = 0; |
| 266 | struct resource *root; |
| 267 | |
Bjorn Helgaas | 463eb29 | 2005-09-23 11:39:07 -0600 | [diff] [blame] | 268 | /* Return AE_OK for non-window resources to keep scanning for more */ |
| 269 | status = resource_to_window(res, &addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | if (!ACPI_SUCCESS(status)) |
| 271 | return AE_OK; |
| 272 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | if (addr.resource_type == ACPI_MEMORY_RANGE) { |
| 274 | flags = IORESOURCE_MEM; |
| 275 | root = &iomem_resource; |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 276 | offset = addr.translation_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | } else if (addr.resource_type == ACPI_IO_RANGE) { |
| 278 | flags = IORESOURCE_IO; |
| 279 | root = &ioport_resource; |
Bjorn Helgaas | 4f41d5a | 2005-11-07 15:13:59 -0700 | [diff] [blame] | 280 | offset = add_io_space(info, &addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | if (offset == ~0) |
| 282 | return AE_OK; |
| 283 | } else |
| 284 | return AE_OK; |
| 285 | |
| 286 | window = &info->controller->window[info->controller->windows++]; |
| 287 | window->resource.name = info->name; |
| 288 | window->resource.flags = flags; |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 289 | window->resource.start = addr.minimum + offset; |
Bjorn Helgaas | 4f41d5a | 2005-11-07 15:13:59 -0700 | [diff] [blame] | 290 | window->resource.end = window->resource.start + addr.address_length - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | window->resource.child = NULL; |
| 292 | window->offset = offset; |
| 293 | |
| 294 | if (insert_resource(root, &window->resource)) { |
Matthew Wilcox | e088a4a | 2009-05-22 13:49:49 -0700 | [diff] [blame] | 295 | printk(KERN_ERR "alloc 0x%llx-0x%llx from %s for %s failed\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | window->resource.start, window->resource.end, |
| 297 | root->name, info->name); |
| 298 | } |
| 299 | |
| 300 | return AE_OK; |
| 301 | } |
| 302 | |
| 303 | static void __devinit |
| 304 | pcibios_setup_root_windows(struct pci_bus *bus, struct pci_controller *ctrl) |
| 305 | { |
| 306 | int i, j; |
| 307 | |
| 308 | j = 0; |
| 309 | for (i = 0; i < ctrl->windows; i++) { |
| 310 | struct resource *res = &ctrl->window[i].resource; |
| 311 | /* HP's firmware has a hack to work around a Windows bug. |
| 312 | * Ignore these tiny memory ranges */ |
| 313 | if ((res->flags & IORESOURCE_MEM) && |
| 314 | (res->end - res->start < 16)) |
| 315 | continue; |
| 316 | if (j >= PCI_BUS_NUM_RESOURCES) { |
Matthew Wilcox | e088a4a | 2009-05-22 13:49:49 -0700 | [diff] [blame] | 317 | printk("Ignoring range [%#llx-%#llx] (%lx)\n", |
| 318 | res->start, res->end, res->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | continue; |
| 320 | } |
| 321 | bus->resource[j++] = res; |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | struct pci_bus * __devinit |
| 326 | pci_acpi_scan_root(struct acpi_device *device, int domain, int bus) |
| 327 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | struct pci_controller *controller; |
| 329 | unsigned int windows = 0; |
| 330 | struct pci_bus *pbus; |
| 331 | char *name; |
Christoph Lameter | 514604c | 2005-07-07 16:59:00 -0700 | [diff] [blame] | 332 | int pxm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | |
| 334 | controller = alloc_pci_controller(domain); |
| 335 | if (!controller) |
| 336 | goto out1; |
| 337 | |
| 338 | controller->acpi_handle = device->handle; |
| 339 | |
Christoph Lameter | 514604c | 2005-07-07 16:59:00 -0700 | [diff] [blame] | 340 | pxm = acpi_get_pxm(controller->acpi_handle); |
| 341 | #ifdef CONFIG_NUMA |
| 342 | if (pxm >= 0) |
Yasunori Goto | 762834e | 2006-06-23 02:03:19 -0700 | [diff] [blame] | 343 | controller->node = pxm_to_node(pxm); |
Christoph Lameter | 514604c | 2005-07-07 16:59:00 -0700 | [diff] [blame] | 344 | #endif |
| 345 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | acpi_walk_resources(device->handle, METHOD_NAME__CRS, count_window, |
| 347 | &windows); |
Kenji Kaneshige | a66aa70 | 2007-05-22 10:20:36 -0700 | [diff] [blame] | 348 | if (windows) { |
Luck, Tony | 8a20fd5 | 2008-08-15 15:37:48 -0700 | [diff] [blame] | 349 | struct pci_root_info info; |
| 350 | |
Kenji Kaneshige | a66aa70 | 2007-05-22 10:20:36 -0700 | [diff] [blame] | 351 | controller->window = |
| 352 | kmalloc_node(sizeof(*controller->window) * windows, |
| 353 | GFP_KERNEL, controller->node); |
| 354 | if (!controller->window) |
| 355 | goto out2; |
Luck, Tony | 8a20fd5 | 2008-08-15 15:37:48 -0700 | [diff] [blame] | 356 | |
| 357 | name = kmalloc(16, GFP_KERNEL); |
| 358 | if (!name) |
| 359 | goto out3; |
| 360 | |
| 361 | sprintf(name, "PCI Bus %04x:%02x", domain, bus); |
| 362 | info.controller = controller; |
| 363 | info.name = name; |
| 364 | acpi_walk_resources(device->handle, METHOD_NAME__CRS, |
| 365 | add_window, &info); |
Kenji Kaneshige | a66aa70 | 2007-05-22 10:20:36 -0700 | [diff] [blame] | 366 | } |
yakui.zhao@intel.com | b87e81e | 2008-04-15 14:34:49 -0700 | [diff] [blame] | 367 | /* |
| 368 | * See arch/x86/pci/acpi.c. |
| 369 | * The desired pci bus might already be scanned in a quirk. We |
| 370 | * should handle the case here, but it appears that IA64 hasn't |
| 371 | * such quirk. So we just ignore the case now. |
| 372 | */ |
Rajesh Shah | c431ada | 2005-04-28 00:25:45 -0700 | [diff] [blame] | 373 | pbus = pci_scan_bus_parented(NULL, bus, &pci_root_ops, controller); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | |
| 375 | return pbus; |
| 376 | |
| 377 | out3: |
| 378 | kfree(controller->window); |
| 379 | out2: |
| 380 | kfree(controller); |
| 381 | out1: |
| 382 | return NULL; |
| 383 | } |
| 384 | |
| 385 | void pcibios_resource_to_bus(struct pci_dev *dev, |
| 386 | struct pci_bus_region *region, struct resource *res) |
| 387 | { |
| 388 | struct pci_controller *controller = PCI_CONTROLLER(dev); |
| 389 | unsigned long offset = 0; |
| 390 | int i; |
| 391 | |
| 392 | for (i = 0; i < controller->windows; i++) { |
| 393 | struct pci_window *window = &controller->window[i]; |
| 394 | if (!(window->resource.flags & res->flags)) |
| 395 | continue; |
| 396 | if (window->resource.start > res->start) |
| 397 | continue; |
| 398 | if (window->resource.end < res->end) |
| 399 | continue; |
| 400 | offset = window->offset; |
| 401 | break; |
| 402 | } |
| 403 | |
| 404 | region->start = res->start - offset; |
| 405 | region->end = res->end - offset; |
| 406 | } |
| 407 | EXPORT_SYMBOL(pcibios_resource_to_bus); |
| 408 | |
| 409 | void pcibios_bus_to_resource(struct pci_dev *dev, |
| 410 | struct resource *res, struct pci_bus_region *region) |
| 411 | { |
| 412 | struct pci_controller *controller = PCI_CONTROLLER(dev); |
| 413 | unsigned long offset = 0; |
| 414 | int i; |
| 415 | |
| 416 | for (i = 0; i < controller->windows; i++) { |
| 417 | struct pci_window *window = &controller->window[i]; |
| 418 | if (!(window->resource.flags & res->flags)) |
| 419 | continue; |
| 420 | if (window->resource.start - window->offset > region->start) |
| 421 | continue; |
| 422 | if (window->resource.end - window->offset < region->end) |
| 423 | continue; |
| 424 | offset = window->offset; |
| 425 | break; |
| 426 | } |
| 427 | |
| 428 | res->start = region->start + offset; |
| 429 | res->end = region->end + offset; |
| 430 | } |
Keith Owens | 41290c1 | 2005-08-24 16:06:25 +1000 | [diff] [blame] | 431 | EXPORT_SYMBOL(pcibios_bus_to_resource); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | |
Rajesh Shah | 71c3511 | 2005-04-28 00:25:46 -0700 | [diff] [blame] | 433 | static int __devinit is_valid_resource(struct pci_dev *dev, int idx) |
| 434 | { |
| 435 | unsigned int i, type_mask = IORESOURCE_IO | IORESOURCE_MEM; |
| 436 | struct resource *devr = &dev->resource[idx]; |
| 437 | |
| 438 | if (!dev->bus) |
| 439 | return 0; |
| 440 | for (i=0; i<PCI_BUS_NUM_RESOURCES; i++) { |
| 441 | struct resource *busr = dev->bus->resource[i]; |
| 442 | |
| 443 | if (!busr || ((busr->flags ^ devr->flags) & type_mask)) |
| 444 | continue; |
| 445 | if ((devr->start) && (devr->start >= busr->start) && |
| 446 | (devr->end <= busr->end)) |
| 447 | return 1; |
| 448 | } |
| 449 | return 0; |
| 450 | } |
| 451 | |
Kenji Kaneshige | 7b9c8ba | 2006-01-16 13:45:23 +0900 | [diff] [blame] | 452 | static void __devinit |
| 453 | pcibios_fixup_resources(struct pci_dev *dev, int start, int limit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | { |
| 455 | struct pci_bus_region region; |
| 456 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | |
Kenji Kaneshige | 7b9c8ba | 2006-01-16 13:45:23 +0900 | [diff] [blame] | 458 | for (i = start; i < limit; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | if (!dev->resource[i].flags) |
| 460 | continue; |
| 461 | region.start = dev->resource[i].start; |
| 462 | region.end = dev->resource[i].end; |
| 463 | pcibios_bus_to_resource(dev, &dev->resource[i], ®ion); |
Rajesh Shah | 71c3511 | 2005-04-28 00:25:46 -0700 | [diff] [blame] | 464 | if ((is_valid_resource(dev, i))) |
| 465 | pci_claim_resource(dev, i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | } |
| 467 | } |
| 468 | |
John Keller | 8ea6091 | 2006-10-04 16:49:25 -0500 | [diff] [blame] | 469 | void __devinit pcibios_fixup_device_resources(struct pci_dev *dev) |
Kenji Kaneshige | 7b9c8ba | 2006-01-16 13:45:23 +0900 | [diff] [blame] | 470 | { |
| 471 | pcibios_fixup_resources(dev, 0, PCI_BRIDGE_RESOURCES); |
| 472 | } |
John Keller | 8ea6091 | 2006-10-04 16:49:25 -0500 | [diff] [blame] | 473 | EXPORT_SYMBOL_GPL(pcibios_fixup_device_resources); |
Kenji Kaneshige | 7b9c8ba | 2006-01-16 13:45:23 +0900 | [diff] [blame] | 474 | |
| 475 | static void __devinit pcibios_fixup_bridge_resources(struct pci_dev *dev) |
| 476 | { |
| 477 | pcibios_fixup_resources(dev, PCI_BRIDGE_RESOURCES, PCI_NUM_RESOURCES); |
| 478 | } |
| 479 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | /* |
| 481 | * Called after each bus is probed, but before its children are examined. |
| 482 | */ |
| 483 | void __devinit |
| 484 | pcibios_fixup_bus (struct pci_bus *b) |
| 485 | { |
| 486 | struct pci_dev *dev; |
| 487 | |
Rajesh Shah | f7d473d | 2005-04-28 00:25:51 -0700 | [diff] [blame] | 488 | if (b->self) { |
| 489 | pci_read_bridge_bases(b); |
Kenji Kaneshige | 7b9c8ba | 2006-01-16 13:45:23 +0900 | [diff] [blame] | 490 | pcibios_fixup_bridge_resources(b->self); |
Matthew Wilcox | 1d89b30 | 2009-06-17 16:33:36 -0400 | [diff] [blame] | 491 | } else { |
| 492 | pcibios_setup_root_windows(b, b->sysdata); |
Rajesh Shah | f7d473d | 2005-04-28 00:25:51 -0700 | [diff] [blame] | 493 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | list_for_each_entry(dev, &b->devices, bus_list) |
| 495 | pcibios_fixup_device_resources(dev); |
John Keller | 8ea6091 | 2006-10-04 16:49:25 -0500 | [diff] [blame] | 496 | platform_pci_fixup_bus(b); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | |
| 498 | return; |
| 499 | } |
| 500 | |
| 501 | void __devinit |
| 502 | pcibios_update_irq (struct pci_dev *dev, int irq) |
| 503 | { |
| 504 | pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq); |
| 505 | |
| 506 | /* ??? FIXME -- record old value for shutdown. */ |
| 507 | } |
| 508 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | int |
| 510 | pcibios_enable_device (struct pci_dev *dev, int mask) |
| 511 | { |
| 512 | int ret; |
| 513 | |
Bjorn Helgaas | d981f16 | 2008-03-04 11:56:52 -0700 | [diff] [blame] | 514 | ret = pci_enable_resources(dev, mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | if (ret < 0) |
| 516 | return ret; |
| 517 | |
Eric W. Biederman | bba6f6f | 2007-03-28 15:36:09 +0200 | [diff] [blame] | 518 | if (!dev->msi_enabled) |
| 519 | return acpi_pci_irq_enable(dev); |
| 520 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | } |
| 522 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | void |
| 524 | pcibios_disable_device (struct pci_dev *dev) |
| 525 | { |
Peter Chubb | c7f570a | 2006-12-05 12:25:31 +1100 | [diff] [blame] | 526 | BUG_ON(atomic_read(&dev->enable_cnt)); |
Eric W. Biederman | bba6f6f | 2007-03-28 15:36:09 +0200 | [diff] [blame] | 527 | if (!dev->msi_enabled) |
| 528 | acpi_pci_irq_disable(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | |
| 531 | void |
| 532 | pcibios_align_resource (void *data, struct resource *res, |
Greg Kroah-Hartman | e31dd6e | 2006-06-12 17:06:02 -0700 | [diff] [blame] | 533 | resource_size_t size, resource_size_t align) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | { |
| 535 | } |
| 536 | |
| 537 | /* |
| 538 | * PCI BIOS setup, always defaults to SAL interface |
| 539 | */ |
Ingo Molnar | 944c54e | 2009-07-01 00:10:16 +0200 | [diff] [blame] | 540 | char * __init |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | pcibios_setup (char *str) |
| 542 | { |
Matthew Wilcox | ac311ac | 2006-02-24 12:46:23 -0700 | [diff] [blame] | 543 | return str; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | } |
| 545 | |
| 546 | int |
| 547 | pci_mmap_page_range (struct pci_dev *dev, struct vm_area_struct *vma, |
| 548 | enum pci_mmap_state mmap_state, int write_combine) |
| 549 | { |
Alex Chiang | 012b710 | 2007-07-11 11:02:15 -0600 | [diff] [blame] | 550 | unsigned long size = vma->vm_end - vma->vm_start; |
| 551 | pgprot_t prot; |
| 552 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | /* |
| 554 | * I/O space cannot be accessed via normal processor loads and |
| 555 | * stores on this platform. |
| 556 | */ |
| 557 | if (mmap_state == pci_mmap_io) |
| 558 | /* |
| 559 | * XXX we could relax this for I/O spaces for which ACPI |
| 560 | * indicates that the space is 1-to-1 mapped. But at the |
| 561 | * moment, we don't support multiple PCI address spaces and |
| 562 | * the legacy I/O space is not 1-to-1 mapped, so this is moot. |
| 563 | */ |
| 564 | return -EINVAL; |
| 565 | |
Alex Chiang | 012b710 | 2007-07-11 11:02:15 -0600 | [diff] [blame] | 566 | if (!valid_mmap_phys_addr_range(vma->vm_pgoff, size)) |
| 567 | return -EINVAL; |
| 568 | |
| 569 | prot = phys_mem_access_prot(NULL, vma->vm_pgoff, size, |
| 570 | vma->vm_page_prot); |
| 571 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | /* |
Alex Chiang | 012b710 | 2007-07-11 11:02:15 -0600 | [diff] [blame] | 573 | * If the user requested WC, the kernel uses UC or WC for this region, |
| 574 | * and the chipset supports WC, we can use WC. Otherwise, we have to |
| 575 | * use the same attribute the kernel uses. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | */ |
Alex Chiang | 012b710 | 2007-07-11 11:02:15 -0600 | [diff] [blame] | 577 | if (write_combine && |
| 578 | ((pgprot_val(prot) & _PAGE_MA_MASK) == _PAGE_MA_UC || |
| 579 | (pgprot_val(prot) & _PAGE_MA_MASK) == _PAGE_MA_WC) && |
| 580 | efi_range_is_wc(vma->vm_start, vma->vm_end - vma->vm_start)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); |
| 582 | else |
Alex Chiang | 012b710 | 2007-07-11 11:02:15 -0600 | [diff] [blame] | 583 | vma->vm_page_prot = prot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | |
| 585 | if (remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, |
| 586 | vma->vm_end - vma->vm_start, vma->vm_page_prot)) |
| 587 | return -EAGAIN; |
| 588 | |
| 589 | return 0; |
| 590 | } |
| 591 | |
| 592 | /** |
| 593 | * ia64_pci_get_legacy_mem - generic legacy mem routine |
| 594 | * @bus: bus to get legacy memory base address for |
| 595 | * |
| 596 | * Find the base of legacy memory for @bus. This is typically the first |
| 597 | * megabyte of bus address space for @bus or is simply 0 on platforms whose |
| 598 | * chipsets support legacy I/O and memory routing. Returns the base address |
| 599 | * or an error pointer if an error occurred. |
| 600 | * |
| 601 | * This is the ia64 generic version of this routine. Other platforms |
| 602 | * are free to override it with a machine vector. |
| 603 | */ |
| 604 | char *ia64_pci_get_legacy_mem(struct pci_bus *bus) |
| 605 | { |
| 606 | return (char *)__IA64_UNCACHED_OFFSET; |
| 607 | } |
| 608 | |
| 609 | /** |
| 610 | * pci_mmap_legacy_page_range - map legacy memory space to userland |
| 611 | * @bus: bus whose legacy space we're mapping |
| 612 | * @vma: vma passed in by mmap |
| 613 | * |
| 614 | * Map legacy memory space for this device back to userspace using a machine |
| 615 | * vector to get the base address. |
| 616 | */ |
| 617 | int |
Benjamin Herrenschmidt | f19aeb1 | 2008-10-03 19:49:32 +1000 | [diff] [blame] | 618 | pci_mmap_legacy_page_range(struct pci_bus *bus, struct vm_area_struct *vma, |
| 619 | enum pci_mmap_state mmap_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | { |
Bjorn Helgaas | 32e62c6 | 2006-05-05 17:19:50 -0600 | [diff] [blame] | 621 | unsigned long size = vma->vm_end - vma->vm_start; |
| 622 | pgprot_t prot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | char *addr; |
| 624 | |
Benjamin Herrenschmidt | f19aeb1 | 2008-10-03 19:49:32 +1000 | [diff] [blame] | 625 | /* We only support mmap'ing of legacy memory space */ |
| 626 | if (mmap_state != pci_mmap_mem) |
| 627 | return -ENOSYS; |
| 628 | |
Bjorn Helgaas | 32e62c6 | 2006-05-05 17:19:50 -0600 | [diff] [blame] | 629 | /* |
| 630 | * Avoid attribute aliasing. See Documentation/ia64/aliasing.txt |
| 631 | * for more details. |
| 632 | */ |
Lennert Buytenhek | 06c67be | 2006-07-10 04:45:27 -0700 | [diff] [blame] | 633 | if (!valid_mmap_phys_addr_range(vma->vm_pgoff, size)) |
Bjorn Helgaas | 32e62c6 | 2006-05-05 17:19:50 -0600 | [diff] [blame] | 634 | return -EINVAL; |
| 635 | prot = phys_mem_access_prot(NULL, vma->vm_pgoff, size, |
| 636 | vma->vm_page_prot); |
Bjorn Helgaas | 32e62c6 | 2006-05-05 17:19:50 -0600 | [diff] [blame] | 637 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | addr = pci_get_legacy_mem(bus); |
| 639 | if (IS_ERR(addr)) |
| 640 | return PTR_ERR(addr); |
| 641 | |
| 642 | vma->vm_pgoff += (unsigned long)addr >> PAGE_SHIFT; |
Bjorn Helgaas | 32e62c6 | 2006-05-05 17:19:50 -0600 | [diff] [blame] | 643 | vma->vm_page_prot = prot; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | |
| 645 | if (remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, |
Bjorn Helgaas | 32e62c6 | 2006-05-05 17:19:50 -0600 | [diff] [blame] | 646 | size, vma->vm_page_prot)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | return -EAGAIN; |
| 648 | |
| 649 | return 0; |
| 650 | } |
| 651 | |
| 652 | /** |
| 653 | * ia64_pci_legacy_read - read from legacy I/O space |
| 654 | * @bus: bus to read |
| 655 | * @port: legacy port value |
| 656 | * @val: caller allocated storage for returned value |
| 657 | * @size: number of bytes to read |
| 658 | * |
| 659 | * Simply reads @size bytes from @port and puts the result in @val. |
| 660 | * |
| 661 | * Again, this (and the write routine) are generic versions that can be |
| 662 | * overridden by the platform. This is necessary on platforms that don't |
| 663 | * support legacy I/O routing or that hard fail on legacy I/O timeouts. |
| 664 | */ |
| 665 | int ia64_pci_legacy_read(struct pci_bus *bus, u16 port, u32 *val, u8 size) |
| 666 | { |
| 667 | int ret = size; |
| 668 | |
| 669 | switch (size) { |
| 670 | case 1: |
| 671 | *val = inb(port); |
| 672 | break; |
| 673 | case 2: |
| 674 | *val = inw(port); |
| 675 | break; |
| 676 | case 4: |
| 677 | *val = inl(port); |
| 678 | break; |
| 679 | default: |
| 680 | ret = -EINVAL; |
| 681 | break; |
| 682 | } |
| 683 | |
| 684 | return ret; |
| 685 | } |
| 686 | |
| 687 | /** |
| 688 | * ia64_pci_legacy_write - perform a legacy I/O write |
| 689 | * @bus: bus pointer |
| 690 | * @port: port to write |
| 691 | * @val: value to write |
| 692 | * @size: number of bytes to write from @val |
| 693 | * |
| 694 | * Simply writes @size bytes of @val to @port. |
| 695 | */ |
Satoru Takeuchi | a72391e | 2006-04-20 18:49:48 +0900 | [diff] [blame] | 696 | int ia64_pci_legacy_write(struct pci_bus *bus, u16 port, u32 val, u8 size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | { |
Alex Williamson | 408045a | 2005-12-21 15:21:36 -0700 | [diff] [blame] | 698 | int ret = size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | |
| 700 | switch (size) { |
| 701 | case 1: |
| 702 | outb(val, port); |
| 703 | break; |
| 704 | case 2: |
| 705 | outw(val, port); |
| 706 | break; |
| 707 | case 4: |
| 708 | outl(val, port); |
| 709 | break; |
| 710 | default: |
| 711 | ret = -EINVAL; |
| 712 | break; |
| 713 | } |
| 714 | |
| 715 | return ret; |
| 716 | } |
| 717 | |
Matthew Wilcox | 3efe2d8 | 2006-10-10 08:01:19 -0600 | [diff] [blame] | 718 | /* It's defined in drivers/pci/pci.c */ |
| 719 | extern u8 pci_cache_line_size; |
| 720 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | /** |
Matthew Wilcox | 3efe2d8 | 2006-10-10 08:01:19 -0600 | [diff] [blame] | 722 | * set_pci_cacheline_size - determine cacheline size for PCI devices |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | * |
| 724 | * We want to use the line-size of the outer-most cache. We assume |
| 725 | * that this line-size is the same for all CPUs. |
| 726 | * |
| 727 | * Code mostly taken from arch/ia64/kernel/palinfo.c:cache_info(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | */ |
Matthew Wilcox | 3efe2d8 | 2006-10-10 08:01:19 -0600 | [diff] [blame] | 729 | static void __init set_pci_cacheline_size(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | { |
Matthew Wilcox | e088a4a | 2009-05-22 13:49:49 -0700 | [diff] [blame] | 731 | unsigned long levels, unique_caches; |
| 732 | long status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | pal_cache_config_info_t cci; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | |
| 735 | status = ia64_pal_cache_summary(&levels, &unique_caches); |
| 736 | if (status != 0) { |
Matthew Wilcox | 3efe2d8 | 2006-10-10 08:01:19 -0600 | [diff] [blame] | 737 | printk(KERN_ERR "%s: ia64_pal_cache_summary() failed " |
Harvey Harrison | d4ed808 | 2008-03-04 15:15:00 -0800 | [diff] [blame] | 738 | "(status=%ld)\n", __func__, status); |
Matthew Wilcox | 3efe2d8 | 2006-10-10 08:01:19 -0600 | [diff] [blame] | 739 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | } |
| 741 | |
Matthew Wilcox | 3efe2d8 | 2006-10-10 08:01:19 -0600 | [diff] [blame] | 742 | status = ia64_pal_cache_config_info(levels - 1, |
| 743 | /* cache_type (data_or_unified)= */ 2, &cci); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | if (status != 0) { |
Matthew Wilcox | 3efe2d8 | 2006-10-10 08:01:19 -0600 | [diff] [blame] | 745 | printk(KERN_ERR "%s: ia64_pal_cache_config_info() failed " |
Harvey Harrison | d4ed808 | 2008-03-04 15:15:00 -0800 | [diff] [blame] | 746 | "(status=%ld)\n", __func__, status); |
Matthew Wilcox | 3efe2d8 | 2006-10-10 08:01:19 -0600 | [diff] [blame] | 747 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | } |
Matthew Wilcox | 3efe2d8 | 2006-10-10 08:01:19 -0600 | [diff] [blame] | 749 | pci_cache_line_size = (1 << cci.pcci_line_size) / 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | } |
| 751 | |
John Keller | 175add1 | 2008-11-24 16:47:17 -0600 | [diff] [blame] | 752 | u64 ia64_dma_get_required_mask(struct device *dev) |
| 753 | { |
| 754 | u32 low_totalram = ((max_pfn - 1) << PAGE_SHIFT); |
| 755 | u32 high_totalram = ((max_pfn - 1) >> (32 - PAGE_SHIFT)); |
| 756 | u64 mask; |
| 757 | |
| 758 | if (!high_totalram) { |
| 759 | /* convert to mask just covering totalram */ |
| 760 | low_totalram = (1 << (fls(low_totalram) - 1)); |
| 761 | low_totalram += low_totalram - 1; |
| 762 | mask = low_totalram; |
| 763 | } else { |
| 764 | high_totalram = (1 << (fls(high_totalram) - 1)); |
| 765 | high_totalram += high_totalram - 1; |
| 766 | mask = (((u64)high_totalram) << 32) + 0xffffffff; |
| 767 | } |
| 768 | return mask; |
| 769 | } |
| 770 | EXPORT_SYMBOL_GPL(ia64_dma_get_required_mask); |
| 771 | |
| 772 | u64 dma_get_required_mask(struct device *dev) |
| 773 | { |
| 774 | return platform_dma_get_required_mask(dev); |
| 775 | } |
| 776 | EXPORT_SYMBOL_GPL(dma_get_required_mask); |
| 777 | |
Matthew Wilcox | 3efe2d8 | 2006-10-10 08:01:19 -0600 | [diff] [blame] | 778 | static int __init pcibios_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | { |
Matthew Wilcox | 3efe2d8 | 2006-10-10 08:01:19 -0600 | [diff] [blame] | 780 | set_pci_cacheline_size(); |
| 781 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | } |
Matthew Wilcox | 3efe2d8 | 2006-10-10 08:01:19 -0600 | [diff] [blame] | 783 | |
| 784 | subsys_initcall(pcibios_init); |