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

Browse source 
* '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
This commit is contained in:
Linus Torvalds 2007-07-28 19:30:24 -07:00
commit 933a6208d8
6 changed files with 22 additions and 18 deletions
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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: parameter is applicable:
ACPI ACPI support is enabled. ACPI ACPI support is enabled.
AGP AGP (Accelerated Graphics Port) is enabled.
ALSA ALSA sound support is enabled. ALSA ALSA sound support is enabled.
APIC APIC support is enabled. APIC APIC support is enabled.
APM Advanced Power Management 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 to assume that this machine's pmtimer latches its value
and always returns good values. 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_timer_pin_1 [i386,x86-64]
Enable PIN 1 of APIC timer Enable PIN 1 of APIC timer
Can be useful to work around chipset bugs 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 config AGP_AMD
tristate "AMD Irongate, 761, and 762 chipset support" tristate "AMD Irongate, 761, and 762 chipset support"
depends on AGP && X86_32 depends on AGP && (X86_32 || ALPHA)
help help
This option gives you AGP support for the GLX component of This option gives you AGP support for the GLX component of
X on AMD Irongate, 761, and 762 chipsets. 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++) { for (i = 0; i < nr_tables; i++) {
entry = kzalloc(sizeof(struct ati_page_map), GFP_KERNEL); entry = kzalloc(sizeof(struct ati_page_map), GFP_KERNEL);
tables[i] = entry;
if (entry == NULL) { if (entry == NULL) {
while (i > 0) {
kfree(tables[i-1]);
i--;
}
kfree(tables);
retval = -ENOMEM; retval = -ENOMEM;
break; break;
} }
tables[i] = entry;
retval = ati_create_page_map(entry); retval = ati_create_page_map(entry);
if (retval != 0) if (retval != 0)
break; break;
} }
ati_generic_private.num_tables = nr_tables; ati_generic_private.num_tables = i;
ati_generic_private.gatt_pages = tables; ati_generic_private.gatt_pages = tables;
if (retval != 0) 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); map_page_into_agp(page);
get_page(page); get_page(page);
SetPageLocked(page);
atomic_inc(&agp_bridge->current_memory_agp); atomic_inc(&agp_bridge->current_memory_agp);
return page_address(page); return page_address(page);
} }
@ -1187,7 +1186,6 @@ void agp_generic_destroy_page(void *addr)
page = virt_to_page(addr); page = virt_to_page(addr);
unmap_page_from_agp(page); unmap_page_from_agp(page);
put_page(page); put_page(page);
unlock_page(page);
free_page((unsigned long)addr); free_page((unsigned long)addr);
atomic_dec(&agp_bridge->current_memory_agp); 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_82965G_IG 0x29A2
#define PCI_DEVICE_ID_INTEL_82965GM_HB 0x2A00 #define PCI_DEVICE_ID_INTEL_82965GM_HB 0x2A00
#define PCI_DEVICE_ID_INTEL_82965GM_IG 0x2A02 #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_82965GME_IG 0x2A12
#define PCI_DEVICE_ID_INTEL_82945GME_HB 0x27AC
#define PCI_DEVICE_ID_INTEL_82945GME_IG 0x27AE #define PCI_DEVICE_ID_INTEL_82945GME_IG 0x27AE
#define PCI_DEVICE_ID_INTEL_G33_HB 0x29C0 #define PCI_DEVICE_ID_INTEL_G33_HB 0x29C0
#define PCI_DEVICE_ID_INTEL_G33_IG 0x29C2 #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_82965G_1_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965Q_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_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 || \ #define IS_G33 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G33_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q35_HB || \ agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q35_HB || \
@ -213,7 +216,6 @@ static void *i8xx_alloc_pages(void)
} }
global_flush_tlb(); global_flush_tlb();
get_page(page); get_page(page);
SetPageLocked(page);
atomic_inc(&agp_bridge->current_memory_agp); atomic_inc(&agp_bridge->current_memory_agp);
return page_address(page); return page_address(page);
} }
@ -229,7 +231,6 @@ static void i8xx_destroy_pages(void *addr)
change_page_attr(page, 4, PAGE_KERNEL); change_page_attr(page, 4, PAGE_KERNEL);
global_flush_tlb(); global_flush_tlb();
put_page(page); put_page(page);
unlock_page(page);
__free_pages(page, 2); __free_pages(page, 2);
atomic_dec(&agp_bridge->current_memory_agp); 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_82915GM_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_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_82945GM_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GME_HB ||
IS_I965 || IS_G33) IS_I965 || IS_G33)
gtt_entries = MB(48) - KB(size); gtt_entries = MB(48) - KB(size);
else 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_82915GM_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_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_82945GM_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GME_HB ||
IS_I965 || IS_G33) IS_I965 || IS_G33)
gtt_entries = MB(64) - KB(size); gtt_entries = MB(64) - KB(size);
else else
@ -1848,9 +1851,9 @@ static const struct intel_driver_description {
NULL, &intel_915_driver }, NULL, &intel_915_driver },
{ PCI_DEVICE_ID_INTEL_82945G_HB, PCI_DEVICE_ID_INTEL_82945G_IG, 0, "945G", { PCI_DEVICE_ID_INTEL_82945G_HB, PCI_DEVICE_ID_INTEL_82945G_IG, 0, "945G",
NULL, &intel_915_driver }, 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 }, 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 }, NULL, &intel_915_driver },
{ PCI_DEVICE_ID_INTEL_82946GZ_HB, PCI_DEVICE_ID_INTEL_82946GZ_IG, 0, "946GZ", { PCI_DEVICE_ID_INTEL_82946GZ_HB, PCI_DEVICE_ID_INTEL_82946GZ_IG, 0, "946GZ",
NULL, &intel_i965_driver }, NULL, &intel_i965_driver },
@ -1860,9 +1863,9 @@ static const struct intel_driver_description {
NULL, &intel_i965_driver }, NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_82965G_HB, PCI_DEVICE_ID_INTEL_82965G_IG, 0, "965G", { PCI_DEVICE_ID_INTEL_82965G_HB, PCI_DEVICE_ID_INTEL_82965G_IG, 0, "965G",
NULL, &intel_i965_driver }, 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 }, 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 }, NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_7505_0, 0, 0, "E7505", &intel_7505_driver, NULL }, { 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 }, { 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_82915GM_HB),
ID(PCI_DEVICE_ID_INTEL_82945G_HB), ID(PCI_DEVICE_ID_INTEL_82945G_HB),
ID(PCI_DEVICE_ID_INTEL_82945GM_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_82946GZ_HB),
ID(PCI_DEVICE_ID_INTEL_82965G_1_HB), ID(PCI_DEVICE_ID_INTEL_82965G_1_HB),
ID(PCI_DEVICE_ID_INTEL_82965Q_HB), ID(PCI_DEVICE_ID_INTEL_82965Q_HB),
ID(PCI_DEVICE_ID_INTEL_82965G_HB), ID(PCI_DEVICE_ID_INTEL_82965G_HB),
ID(PCI_DEVICE_ID_INTEL_82965GM_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_G33_HB),
ID(PCI_DEVICE_ID_INTEL_Q35_HB), ID(PCI_DEVICE_ID_INTEL_Q35_HB),
ID(PCI_DEVICE_ID_INTEL_Q33_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; return NULL;
get_page(page); get_page(page);
SetPageLocked(page);
atomic_inc(&agp_bridge->current_memory_agp); atomic_inc(&agp_bridge->current_memory_agp);
return page_address(page); return page_address(page);
} }