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Merge branch 'agp-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6 

* 'agp-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6:
  agp: AMD AGP is used on UP1100 & UP1500 alpha boxen
  intel_agp: really fix 945/965GME
  agp: don't lock pages
  AGP: document boot options
  Fix "use after free" / "double free" bug in ati_create_gatt_pages / ati_free_gatt_pages
hifive-unleashed-5.1
Linus Torvalds 2007-07-28 19:30:24 -07:00
parent 715dad5992 f191f14407
commit 933a6208d8
6 changed files with 22 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
Documentation/kernel-parameters.txt
View File

@ -30,6 +30,7 @@ the beginning of each description states the restrictions within which a
parameter is applicable:
ACPI ACPI support is enabled.
AGP AGP (Accelerated Graphics Port) is enabled.
ALSA ALSA sound support is enabled.
APIC APIC support is enabled.
APM Advanced Power Management support is enabled.
@ -227,6 +228,12 @@ and is between 256 and 4096 characters. It is defined in the file
to assume that this machine's pmtimer latches its value
and always returns good values.
agp= [AGP]
{ off | try_unsupported }
off: disable AGP support
try_unsupported: try to drive unsupported chipsets
(may crash computer or cause data corruption)
enable_timer_pin_1 [i386,x86-64]
Enable PIN 1 of APIC timer
Can be useful to work around chipset bugs

2
drivers/char/agp/Kconfig
View File

@ -50,7 +50,7 @@ config AGP_ATI
config AGP_AMD
tristate "AMD Irongate, 761, and 762 chipset support"
depends on AGP && X86_32
depends on AGP && (X86_32 || ALPHA)
help
This option gives you AGP support for the GLX component of
X on AMD Irongate, 761, and 762 chipsets.

9
drivers/char/agp/ati-agp.c
View File

@ -123,21 +123,16 @@ static int ati_create_gatt_pages(int nr_tables)
for (i = 0; i < nr_tables; i++) {
entry = kzalloc(sizeof(struct ati_page_map), GFP_KERNEL);
tables[i] = entry;
if (entry == NULL) {
while (i > 0) {
kfree(tables[i-1]);
i--;
}
kfree(tables);
retval = -ENOMEM;
break;
}
tables[i] = entry;
retval = ati_create_page_map(entry);
if (retval != 0)
break;
}
ati_generic_private.num_tables = nr_tables;
ati_generic_private.num_tables = i;
ati_generic_private.gatt_pages = tables;
if (retval != 0)

2
drivers/char/agp/generic.c
View File

@ -1170,7 +1170,6 @@ void *agp_generic_alloc_page(struct agp_bridge_data *bridge)
map_page_into_agp(page);
get_page(page);
SetPageLocked(page);
atomic_inc(&agp_bridge->current_memory_agp);
return page_address(page);
}
@ -1187,7 +1186,6 @@ void agp_generic_destroy_page(void *addr)
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);
}

19
drivers/char/agp/intel-agp.c
View File

@ -20,7 +20,9 @@
#define PCI_DEVICE_ID_INTEL_82965G_IG 0x29A2
#define PCI_DEVICE_ID_INTEL_82965GM_HB 0x2A00
#define PCI_DEVICE_ID_INTEL_82965GM_IG 0x2A02
#define PCI_DEVICE_ID_INTEL_82965GME_HB 0x2A10
#define PCI_DEVICE_ID_INTEL_82965GME_IG 0x2A12
#define PCI_DEVICE_ID_INTEL_82945GME_HB 0x27AC
#define PCI_DEVICE_ID_INTEL_82945GME_IG 0x27AE
#define PCI_DEVICE_ID_INTEL_G33_HB 0x29C0
#define PCI_DEVICE_ID_INTEL_G33_IG 0x29C2
@ -33,7 +35,8 @@
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965G_1_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965Q_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965G_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GM_HB)
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GM_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GME_HB)
#define IS_G33 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G33_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q35_HB || \
@ -213,7 +216,6 @@ static void *i8xx_alloc_pages(void)
}
global_flush_tlb();
get_page(page);
SetPageLocked(page);
atomic_inc(&agp_bridge->current_memory_agp);
return page_address(page);
}
@ -229,7 +231,6 @@ static void i8xx_destroy_pages(void *addr)
change_page_attr(page, 4, PAGE_KERNEL);
global_flush_tlb();
put_page(page);
unlock_page(page);
__free_pages(page, 2);
atomic_dec(&agp_bridge->current_memory_agp);
}
@ -527,6 +528,7 @@ static void intel_i830_init_gtt_entries(void)
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GME_HB ||
IS_I965 || IS_G33)
gtt_entries = MB(48) - KB(size);
else
@ -538,6 +540,7 @@ static void intel_i830_init_gtt_entries(void)
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GME_HB ||
IS_I965 || IS_G33)
gtt_entries = MB(64) - KB(size);
else
@ -1848,9 +1851,9 @@ static const struct intel_driver_description {
NULL, &intel_915_driver },
{ PCI_DEVICE_ID_INTEL_82945G_HB, PCI_DEVICE_ID_INTEL_82945G_IG, 0, "945G",
NULL, &intel_915_driver },
{ PCI_DEVICE_ID_INTEL_82945GM_HB, PCI_DEVICE_ID_INTEL_82945GM_IG, 1, "945GM",
{ PCI_DEVICE_ID_INTEL_82945GM_HB, PCI_DEVICE_ID_INTEL_82945GM_IG, 0, "945GM",
NULL, &intel_915_driver },
{ PCI_DEVICE_ID_INTEL_82945GM_HB, PCI_DEVICE_ID_INTEL_82945GME_IG, 0, "945GME",
{ PCI_DEVICE_ID_INTEL_82945GME_HB, PCI_DEVICE_ID_INTEL_82945GME_IG, 0, "945GME",
NULL, &intel_915_driver },
{ PCI_DEVICE_ID_INTEL_82946GZ_HB, PCI_DEVICE_ID_INTEL_82946GZ_IG, 0, "946GZ",
NULL, &intel_i965_driver },
@ -1860,9 +1863,9 @@ static const struct intel_driver_description {
NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_82965G_HB, PCI_DEVICE_ID_INTEL_82965G_IG, 0, "965G",
NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_82965GM_HB, PCI_DEVICE_ID_INTEL_82965GM_IG, 1, "965GM",
{ PCI_DEVICE_ID_INTEL_82965GM_HB, PCI_DEVICE_ID_INTEL_82965GM_IG, 0, "965GM",
NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_82965GM_HB, PCI_DEVICE_ID_INTEL_82965GME_IG, 0, "965GME/GLE",
{ PCI_DEVICE_ID_INTEL_82965GME_HB, PCI_DEVICE_ID_INTEL_82965GME_IG, 0, "965GME/GLE",
NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_7505_0, 0, 0, "E7505", &intel_7505_driver, NULL },
{ PCI_DEVICE_ID_INTEL_7205_0, 0, 0, "E7205", &intel_7505_driver, NULL },
@ -2051,11 +2054,13 @@ static struct pci_device_id agp_intel_pci_table[] = {
ID(PCI_DEVICE_ID_INTEL_82915GM_HB),
ID(PCI_DEVICE_ID_INTEL_82945G_HB),
ID(PCI_DEVICE_ID_INTEL_82945GM_HB),
ID(PCI_DEVICE_ID_INTEL_82945GME_HB),
ID(PCI_DEVICE_ID_INTEL_82946GZ_HB),
ID(PCI_DEVICE_ID_INTEL_82965G_1_HB),
ID(PCI_DEVICE_ID_INTEL_82965Q_HB),
ID(PCI_DEVICE_ID_INTEL_82965G_HB),
ID(PCI_DEVICE_ID_INTEL_82965GM_HB),
ID(PCI_DEVICE_ID_INTEL_82965GME_HB),
ID(PCI_DEVICE_ID_INTEL_G33_HB),
ID(PCI_DEVICE_ID_INTEL_Q35_HB),
ID(PCI_DEVICE_ID_INTEL_Q33_HB),

1
drivers/char/agp/sgi-agp.c
View File

@ -51,7 +51,6 @@ static void *sgi_tioca_alloc_page(struct agp_bridge_data *bridge)
return NULL;
get_page(page);
SetPageLocked(page);
atomic_inc(&agp_bridge->current_memory_agp);
return page_address(page);
}