* TODO:
* - Allocate more than order 0 pages to avoid too much linear map splitting.
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/vmalloc.h>
#include <linux/dma-mapping.h>
#include <linux/mm.h>
+#include <linux/sched.h>
#include <asm/io.h>
#include <asm/cacheflush.h>
#include <asm/pgtable.h>
*/
EXPORT_SYMBOL_GPL(agp_memory_reserved);
-#if defined(CONFIG_X86)
-int map_page_into_agp(struct page *page)
-{
- int i;
- i = change_page_attr(page, 1, PAGE_KERNEL_NOCACHE);
- global_flush_tlb();
- return i;
-}
-EXPORT_SYMBOL_GPL(map_page_into_agp);
-
-int unmap_page_from_agp(struct page *page)
-{
- int i;
- i = change_page_attr(page, 1, PAGE_KERNEL);
- global_flush_tlb();
- return i;
-}
-EXPORT_SYMBOL_GPL(unmap_page_from_agp);
-#endif
-
/*
* Generic routines for handling agp_memory structures -
* They use the basic page allocation routines to do the brunt of the work.
return -1;
}
+void agp_flush_chipset(struct agp_bridge_data *bridge)
+{
+ if (bridge->driver->chipset_flush)
+ bridge->driver->chipset_flush(bridge);
+}
+EXPORT_SYMBOL(agp_flush_chipset);
-struct agp_memory *agp_create_memory(int scratch_pages)
+/*
+ * Use kmalloc if possible for the page list. Otherwise fall back to
+ * vmalloc. This speeds things up and also saves memory for small AGP
+ * regions.
+ */
+
+void agp_alloc_page_array(size_t size, struct agp_memory *mem)
+{
+ mem->memory = NULL;
+ mem->vmalloc_flag = 0;
+
+ if (size <= 2*PAGE_SIZE)
+ mem->memory = kmalloc(size, GFP_KERNEL | __GFP_NORETRY);
+ if (mem->memory == NULL) {
+ mem->memory = vmalloc(size);
+ mem->vmalloc_flag = 1;
+ }
+}
+EXPORT_SYMBOL(agp_alloc_page_array);
+
+void agp_free_page_array(struct agp_memory *mem)
+{
+ if (mem->vmalloc_flag) {
+ vfree(mem->memory);
+ } else {
+ kfree(mem->memory);
+ }
+}
+EXPORT_SYMBOL(agp_free_page_array);
+
+
+static struct agp_memory *agp_create_user_memory(unsigned long num_agp_pages)
{
struct agp_memory *new;
+ unsigned long alloc_size = num_agp_pages*sizeof(struct page *);
- new = kmalloc(sizeof(struct agp_memory), GFP_KERNEL);
+ new = kzalloc(sizeof(struct agp_memory), GFP_KERNEL);
+ if (new == NULL)
+ return NULL;
+ new->key = agp_get_key();
+
+ if (new->key < 0) {
+ kfree(new);
+ return NULL;
+ }
+
+ agp_alloc_page_array(alloc_size, new);
+
+ if (new->memory == NULL) {
+ agp_free_key(new->key);
+ kfree(new);
+ return NULL;
+ }
+ new->num_scratch_pages = 0;
+ return new;
+}
+
+struct agp_memory *agp_create_memory(int scratch_pages)
+{
+ struct agp_memory *new;
+
+ new = kzalloc(sizeof(struct agp_memory), GFP_KERNEL);
if (new == NULL)
return NULL;
- memset(new, 0, sizeof(struct agp_memory));
new->key = agp_get_key();
if (new->key < 0) {
kfree(new);
return NULL;
}
- new->memory = vmalloc(PAGE_SIZE * scratch_pages);
+
+ agp_alloc_page_array(PAGE_SIZE * scratch_pages, new);
if (new->memory == NULL) {
agp_free_key(new->key);
return NULL;
}
new->num_scratch_pages = scratch_pages;
+ new->type = AGP_NORMAL_MEMORY;
return new;
}
EXPORT_SYMBOL(agp_create_memory);
if (curr->is_bound == TRUE)
agp_unbind_memory(curr);
+ if (curr->type >= AGP_USER_TYPES) {
+ agp_generic_free_by_type(curr);
+ return;
+ }
+
if (curr->type != 0) {
curr->bridge->driver->free_by_type(curr);
return;
}
if (curr->page_count != 0) {
for (i = 0; i < curr->page_count; i++) {
- curr->bridge->driver->agp_destroy_page(phys_to_virt(curr->memory[i]));
+ curr->memory[i] = (unsigned long)gart_to_virt(curr->memory[i]);
+ curr->bridge->driver->agp_destroy_page((void *)curr->memory[i],
+ AGP_PAGE_DESTROY_UNMAP);
+ }
+ for (i = 0; i < curr->page_count; i++) {
+ curr->bridge->driver->agp_destroy_page((void *)curr->memory[i],
+ AGP_PAGE_DESTROY_FREE);
}
}
agp_free_key(curr->key);
- vfree(curr->memory);
+ agp_free_page_array(curr);
kfree(curr);
}
EXPORT_SYMBOL(agp_free_memory);
if ((atomic_read(&bridge->current_memory_agp) + page_count) > bridge->max_memory_agp)
return NULL;
+ if (type >= AGP_USER_TYPES) {
+ new = agp_generic_alloc_user(page_count, type);
+ if (new)
+ new->bridge = bridge;
+ return new;
+ }
+
if (type != 0) {
new = bridge->driver->alloc_by_type(page_count, type);
if (new)
agp_free_memory(new);
return NULL;
}
- new->memory[i] = virt_to_phys(addr);
+ new->memory[i] = virt_to_gart(addr);
new->page_count++;
}
- new->bridge = bridge;
-
- flush_agp_mappings();
+ new->bridge = bridge;
return new;
}
EXPORT_SYMBOL_GPL(agp_num_entries);
-static int check_bridge_mode(struct pci_dev *dev)
-{
- u32 agp3;
- u8 cap_ptr;
-
- cap_ptr = pci_find_capability(dev, PCI_CAP_ID_AGP);
- pci_read_config_dword(dev, cap_ptr+AGPSTAT, &agp3);
- if (agp3 & AGPSTAT_MODE_3_0)
- return 1;
- return 0;
-}
-
-
/**
* agp_copy_info - copy bridge state information
*
- * @info: agp_kern_info pointer. The caller should insure that this pointer is valid.
+ * @info: agp_kern_info pointer. The caller should insure that this pointer is valid.
*
* This function copies information about the agp bridge device and the state of
* the agp backend into an agp_kern_info pointer.
info->version.minor = bridge->version->minor;
info->chipset = SUPPORTED;
info->device = bridge->dev;
- if (check_bridge_mode(bridge->dev))
+ if (bridge->mode & AGPSTAT_MODE_3_0)
info->mode = bridge->mode & ~AGP3_RESERVED_MASK;
else
info->mode = bridge->mode & ~AGP2_RESERVED_MASK;
- info->mode = bridge->mode;
info->aper_base = bridge->gart_bus_addr;
info->aper_size = agp_return_size();
info->max_memory = bridge->max_memory_agp;
return -EINVAL;
if (curr->is_bound == TRUE) {
- printk (KERN_INFO PFX "memory %p is already bound!\n", curr);
+ printk(KERN_INFO PFX "memory %p is already bound!\n", curr);
return -EINVAL;
}
if (curr->is_flushed == FALSE) {
return -EINVAL;
if (curr->is_bound != TRUE) {
- printk (KERN_INFO PFX "memory %p was not bound!\n", curr);
+ printk(KERN_INFO PFX "memory %p was not bound!\n", curr);
return -EINVAL;
}
u32 tmp;
if (*requested_mode & AGP2_RESERVED_MASK) {
- printk (KERN_INFO PFX "reserved bits set in mode 0x%x. Fixed.\n", *requested_mode);
+ printk(KERN_INFO PFX "reserved bits set (%x) in mode 0x%x. Fixed.\n",
+ *requested_mode & AGP2_RESERVED_MASK, *requested_mode);
*requested_mode &= ~AGP2_RESERVED_MASK;
}
+ /*
+ * Some dumb bridges are programmed to disobey the AGP2 spec.
+ * This is likely a BIOS misprogramming rather than poweron default, or
+ * it would be a lot more common.
+ * https://bugs.freedesktop.org/show_bug.cgi?id=8816
+ * AGPv2 spec 6.1.9 states:
+ * The RATE field indicates the data transfer rates supported by this
+ * device. A.G.P. devices must report all that apply.
+ * Fix them up as best we can.
+ */
+ switch (*bridge_agpstat & 7) {
+ case 4:
+ *bridge_agpstat |= (AGPSTAT2_2X | AGPSTAT2_1X);
+ printk(KERN_INFO PFX "BIOS bug. AGP bridge claims to only support x4 rate"
+ "Fixing up support for x2 & x1\n");
+ break;
+ case 2:
+ *bridge_agpstat |= AGPSTAT2_1X;
+ printk(KERN_INFO PFX "BIOS bug. AGP bridge claims to only support x2 rate"
+ "Fixing up support for x1\n");
+ break;
+ default:
+ break;
+ }
+
/* Check the speed bits make sense. Only one should be set. */
tmp = *requested_mode & 7;
switch (tmp) {
case 0:
- printk (KERN_INFO PFX "%s tried to set rate=x0. Setting to x1 mode.\n", current->comm);
+ printk(KERN_INFO PFX "%s tried to set rate=x0. Setting to x1 mode.\n", current->comm);
*requested_mode |= AGPSTAT2_1X;
break;
case 1:
u32 tmp;
if (*requested_mode & AGP3_RESERVED_MASK) {
- printk (KERN_INFO PFX "reserved bits set in mode 0x%x. Fixed.\n", *requested_mode);
+ printk(KERN_INFO PFX "reserved bits set (%x) in mode 0x%x. Fixed.\n",
+ *requested_mode & AGP3_RESERVED_MASK, *requested_mode);
*requested_mode &= ~AGP3_RESERVED_MASK;
}
/* Check the speed bits make sense. */
tmp = *requested_mode & 7;
if (tmp == 0) {
- printk (KERN_INFO PFX "%s tried to set rate=x0. Setting to AGP3 x4 mode.\n", current->comm);
+ printk(KERN_INFO PFX "%s tried to set rate=x0. Setting to AGP3 x4 mode.\n", current->comm);
*requested_mode |= AGPSTAT3_4X;
}
if (tmp >= 3) {
- printk (KERN_INFO PFX "%s tried to set rate=x%d. Setting to AGP3 x8 mode.\n", current->comm, tmp * 4);
+ printk(KERN_INFO PFX "%s tried to set rate=x%d. Setting to AGP3 x8 mode.\n", current->comm, tmp * 4);
*requested_mode = (*requested_mode & ~7) | AGPSTAT3_8X;
}
* AGP2.x 4x -> AGP3.0 4x.
*/
if (*requested_mode & AGPSTAT2_4X) {
- printk (KERN_INFO PFX "%s passes broken AGP3 flags (%x). Fixed.\n",
+ printk(KERN_INFO PFX "%s passes broken AGP3 flags (%x). Fixed.\n",
current->comm, *requested_mode);
*requested_mode &= ~AGPSTAT2_4X;
*requested_mode |= AGPSTAT3_4X;
* but have been passed an AGP 2.x mode.
* Convert AGP 1x,2x,4x -> AGP 3.0 4x.
*/
- printk (KERN_INFO PFX "%s passes broken AGP2 flags (%x) in AGP3 mode. Fixed.\n",
+ printk(KERN_INFO PFX "%s passes broken AGP2 flags (%x) in AGP3 mode. Fixed.\n",
current->comm, *requested_mode);
*requested_mode &= ~(AGPSTAT2_4X | AGPSTAT2_2X | AGPSTAT2_1X);
*requested_mode |= AGPSTAT3_4X;
if (!(*bridge_agpstat & AGPSTAT3_8X)) {
*bridge_agpstat &= ~(AGPSTAT3_8X | AGPSTAT3_RSVD);
*bridge_agpstat |= AGPSTAT3_4X;
- printk ("%s requested AGPx8 but bridge not capable.\n", current->comm);
+ printk(KERN_INFO PFX "%s requested AGPx8 but bridge not capable.\n", current->comm);
return;
}
if (!(*vga_agpstat & AGPSTAT3_8X)) {
*bridge_agpstat &= ~(AGPSTAT3_8X | AGPSTAT3_RSVD);
*bridge_agpstat |= AGPSTAT3_4X;
- printk ("%s requested AGPx8 but graphic card not capable.\n", current->comm);
+ printk(KERN_INFO PFX "%s requested AGPx8 but graphic card not capable.\n", current->comm);
return;
}
/* All set, bridge & device can do AGP x8*/
*bridge_agpstat &= ~(AGPSTAT3_4X | AGPSTAT3_RSVD);
goto done;
+ } else if (*requested_mode & AGPSTAT3_4X) {
+ *bridge_agpstat &= ~(AGPSTAT3_8X | AGPSTAT3_RSVD);
+ *bridge_agpstat |= AGPSTAT3_4X;
+ goto done;
+
} else {
/*
- * If we didn't specify AGPx8, we can only do x4.
- * If the hardware can't do x4, we're up shit creek, and never
- * should have got this far.
+ * If we didn't specify an AGP mode, we see if both
+ * the graphics card, and the bridge can do x8, and use if so.
+ * If not, we fall back to x4 mode.
*/
- *bridge_agpstat &= ~(AGPSTAT3_8X | AGPSTAT3_RSVD);
- if ((*bridge_agpstat & AGPSTAT3_4X) && (*vga_agpstat & AGPSTAT3_4X))
- *bridge_agpstat |= AGPSTAT3_4X;
- else {
- printk (KERN_INFO PFX "Badness. Don't know which AGP mode to set. "
- "[bridge_agpstat:%x vga_agpstat:%x fell back to:- bridge_agpstat:%x vga_agpstat:%x]\n",
- origbridge, origvga, *bridge_agpstat, *vga_agpstat);
- if (!(*bridge_agpstat & AGPSTAT3_4X))
- printk (KERN_INFO PFX "Bridge couldn't do AGP x4.\n");
- if (!(*vga_agpstat & AGPSTAT3_4X))
- printk (KERN_INFO PFX "Graphic card couldn't do AGP x4.\n");
- return;
+ if ((*bridge_agpstat & AGPSTAT3_8X) && (*vga_agpstat & AGPSTAT3_8X)) {
+ printk(KERN_INFO PFX "No AGP mode specified. Setting to highest mode "
+ "supported by bridge & card (x8).\n");
+ *bridge_agpstat &= ~(AGPSTAT3_4X | AGPSTAT3_RSVD);
+ *vga_agpstat &= ~(AGPSTAT3_4X | AGPSTAT3_RSVD);
+ } else {
+ printk(KERN_INFO PFX "Fell back to AGPx4 mode because");
+ if (!(*bridge_agpstat & AGPSTAT3_8X)) {
+ printk(KERN_INFO PFX "bridge couldn't do x8. bridge_agpstat:%x (orig=%x)\n",
+ *bridge_agpstat, origbridge);
+ *bridge_agpstat &= ~(AGPSTAT3_8X | AGPSTAT3_RSVD);
+ *bridge_agpstat |= AGPSTAT3_4X;
+ }
+ if (!(*vga_agpstat & AGPSTAT3_8X)) {
+ printk(KERN_INFO PFX "graphics card couldn't do x8. vga_agpstat:%x (orig=%x)\n",
+ *vga_agpstat, origvga);
+ *vga_agpstat &= ~(AGPSTAT3_8X | AGPSTAT3_RSVD);
+ *vga_agpstat |= AGPSTAT3_4X;
+ }
}
}
for (;;) {
device = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, device);
if (!device) {
- printk (KERN_INFO PFX "Couldn't find an AGP VGA controller.\n");
+ printk(KERN_INFO PFX "Couldn't find an AGP VGA controller.\n");
return 0;
}
cap_ptr = pci_find_capability(device, PCI_CAP_ID_AGP);
bridge_agpstat &= ~AGPSTAT_FW;
/* Check to see if we are operating in 3.0 mode */
- if (check_bridge_mode(agp_bridge->dev))
+ if (agp_bridge->mode & AGPSTAT_MODE_3_0)
agp_v3_parse_one(&requested_mode, &bridge_agpstat, &vga_agpstat);
else
agp_v2_parse_one(&requested_mode, &bridge_agpstat, &vga_agpstat);
/* Do AGP version specific frobbing. */
if (bridge->major_version >= 3) {
- if (check_bridge_mode(bridge->dev)) {
+ if (bridge->mode & AGPSTAT_MODE_3_0) {
/* If we have 3.5, we can do the isoch stuff. */
if (bridge->minor_version >= 5)
agp_3_5_enable(bridge);
pci_write_config_dword(bridge->dev,
bridge->capndx+AGPCTRL, temp);
- printk (KERN_INFO PFX "Device is in legacy mode,"
+ printk(KERN_INFO PFX "Device is in legacy mode,"
" falling back to 2.x\n");
}
}
break;
}
- table = (char *) __get_free_pages(GFP_KERNEL,
- page_order);
+ table = alloc_gatt_pages(page_order);
if (table == NULL) {
i++;
case U32_APER_SIZE:
bridge->current_size = A_IDX32(bridge);
break;
- /* This case will never really happen. */
+ /* These cases will never really happen. */
case FIXED_APER_SIZE:
case LVL2_APER_SIZE:
default:
- bridge->current_size =
- bridge->current_size;
break;
}
temp = bridge->current_size;
size = ((struct aper_size_info_fixed *) temp)->size;
page_order = ((struct aper_size_info_fixed *) temp)->page_order;
num_entries = ((struct aper_size_info_fixed *) temp)->num_entries;
- table = (char *) __get_free_pages(GFP_KERNEL, page_order);
+ table = alloc_gatt_pages(page_order);
}
if (table == NULL)
agp_gatt_table = (void *)table;
bridge->driver->cache_flush();
- bridge->gatt_table = ioremap_nocache(virt_to_phys(table),
+#ifdef CONFIG_X86
+ set_memory_uc((unsigned long)table, 1 << page_order);
+ bridge->gatt_table = (void *)table;
+#else
+ bridge->gatt_table = ioremap_nocache(virt_to_gart(table),
(PAGE_SIZE * (1 << page_order)));
bridge->driver->cache_flush();
+#endif
if (bridge->gatt_table == NULL) {
for (page = virt_to_page(table); page <= virt_to_page(table_end); page++)
ClearPageReserved(page);
- free_pages((unsigned long) table, page_order);
+ free_gatt_pages(table, page_order);
return -ENOMEM;
}
- bridge->gatt_bus_addr = virt_to_phys(bridge->gatt_table_real);
+ bridge->gatt_bus_addr = virt_to_gart(bridge->gatt_table_real);
/* AK: bogus, should encode addresses > 4GB */
for (i = 0; i < num_entries; i++) {
* called, then all agp memory is deallocated and removed
* from the table. */
+#ifdef CONFIG_X86
+ set_memory_wb((unsigned long)bridge->gatt_table, 1 << page_order);
+#else
iounmap(bridge->gatt_table);
+#endif
table = (char *) bridge->gatt_table_real;
table_end = table + ((PAGE_SIZE * (1 << page_order)) - 1);
for (page = virt_to_page(table); page <= virt_to_page(table_end); page++)
ClearPageReserved(page);
- free_pages((unsigned long) bridge->gatt_table_real, page_order);
+ free_gatt_pages(bridge->gatt_table_real, page_order);
agp_gatt_table = NULL;
bridge->gatt_table = NULL;
off_t j;
void *temp;
struct agp_bridge_data *bridge;
+ int mask_type;
bridge = mem->bridge;
if (!bridge)
return -EINVAL;
+ if (mem->page_count == 0)
+ return 0;
+
temp = bridge->current_size;
switch (bridge->driver->size_type) {
num_entries -= agp_memory_reserved/PAGE_SIZE;
if (num_entries < 0) num_entries = 0;
- if (type != 0 || mem->type != 0) {
+ if (type != mem->type)
+ return -EINVAL;
+
+ mask_type = bridge->driver->agp_type_to_mask_type(bridge, type);
+ if (mask_type != 0) {
/* The generic routines know nothing of memory types */
return -EINVAL;
}
}
for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
- writel(bridge->driver->mask_memory(bridge, mem->memory[i], mem->type), bridge->gatt_table+j);
- readl(bridge->gatt_table+j); /* PCI Posting. */
+ writel(bridge->driver->mask_memory(bridge, mem->memory[i], mask_type),
+ bridge->gatt_table+j);
}
+ readl(bridge->gatt_table+j-1); /* PCI Posting. */
bridge->driver->tlb_flush(mem);
return 0;
{
size_t i;
struct agp_bridge_data *bridge;
+ int mask_type;
bridge = mem->bridge;
if (!bridge)
return -EINVAL;
- if (type != 0 || mem->type != 0) {
+ if (mem->page_count == 0)
+ return 0;
+
+ if (type != mem->type)
+ return -EINVAL;
+
+ mask_type = bridge->driver->agp_type_to_mask_type(bridge, type);
+ if (mask_type != 0) {
/* The generic routines know nothing of memory types */
return -EINVAL;
}
/* AK: bogus, should encode addresses > 4GB */
for (i = pg_start; i < (mem->page_count + pg_start); i++) {
writel(bridge->scratch_page, bridge->gatt_table+i);
- readl(bridge->gatt_table+i); /* PCI Posting. */
}
+ readl(bridge->gatt_table+i-1); /* PCI Posting. */
- global_cache_flush();
bridge->driver->tlb_flush(mem);
return 0;
}
EXPORT_SYMBOL(agp_generic_remove_memory);
-
struct agp_memory *agp_generic_alloc_by_type(size_t page_count, int type)
{
return NULL;
}
EXPORT_SYMBOL(agp_generic_alloc_by_type);
-
void agp_generic_free_by_type(struct agp_memory *curr)
{
- vfree(curr->memory);
+ agp_free_page_array(curr);
agp_free_key(curr->key);
kfree(curr);
}
EXPORT_SYMBOL(agp_generic_free_by_type);
+struct agp_memory *agp_generic_alloc_user(size_t page_count, int type)
+{
+ struct agp_memory *new;
+ int i;
+ int pages;
+
+ pages = (page_count + ENTRIES_PER_PAGE - 1) / ENTRIES_PER_PAGE;
+ new = agp_create_user_memory(page_count);
+ if (new == NULL)
+ return NULL;
+
+ for (i = 0; i < page_count; i++)
+ new->memory[i] = 0;
+ new->page_count = 0;
+ new->type = type;
+ new->num_scratch_pages = pages;
+
+ return new;
+}
+EXPORT_SYMBOL(agp_generic_alloc_user);
/*
* Basic Page Allocation Routines -
{
struct page * page;
- page = alloc_page(GFP_KERNEL);
+ page = alloc_page(GFP_KERNEL | GFP_DMA32);
if (page == NULL)
return NULL;
map_page_into_agp(page);
get_page(page);
- SetPageLocked(page);
atomic_inc(&agp_bridge->current_memory_agp);
return page_address(page);
}
EXPORT_SYMBOL(agp_generic_alloc_page);
-void agp_generic_destroy_page(void *addr)
+void agp_generic_destroy_page(void *addr, int flags)
{
struct page *page;
return;
page = virt_to_page(addr);
- unmap_page_from_agp(page);
- put_page(page);
- unlock_page(page);
- free_page((unsigned long)addr);
- atomic_dec(&agp_bridge->current_memory_agp);
+ if (flags & AGP_PAGE_DESTROY_UNMAP)
+ unmap_page_from_agp(page);
+
+ if (flags & AGP_PAGE_DESTROY_FREE) {
+ put_page(page);
+ free_page((unsigned long)addr);
+ atomic_dec(&agp_bridge->current_memory_agp);
+ }
}
EXPORT_SYMBOL(agp_generic_destroy_page);
}
EXPORT_SYMBOL(agp_generic_mask_memory);
+int agp_generic_type_to_mask_type(struct agp_bridge_data *bridge,
+ int type)
+{
+ if (type >= AGP_USER_TYPES)
+ return 0;
+ return type;
+}
+EXPORT_SYMBOL(agp_generic_type_to_mask_type);
+
/*
* These functions are implemented according to the AGPv3 spec,
* which covers implementation details that had previously been
}
EXPORT_SYMBOL(agp3_generic_cleanup);
-struct aper_size_info_16 agp3_generic_sizes[AGP_GENERIC_SIZES_ENTRIES] =
+const struct aper_size_info_16 agp3_generic_sizes[AGP_GENERIC_SIZES_ENTRIES] =
{
{4096, 1048576, 10,0x000},
{2048, 524288, 9, 0x800},
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff