iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[AGPGART] Intel 965 Express support.

Browse Source 
From: Alan Hourihane <alanh@tungstengraphics.com>
From: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Jones <davej@redhat.com>
This commit is contained in:
Eric Anholt 2006-09-06 11:57:18 -04:00 committed by Dave Jones
parent 115b384cf8
commit 65c25aadfa
1 changed files with 152 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

163
drivers/char/agp/intel-agp.c
View File

@ -2,14 +2,6 @@
* Intel AGPGART routines.
*/
/*
* Intel(R) 855GM/852GM and 865G support added by David Dawes
* <dawes@tungstengraphics.com>.
*
* Intel(R) 915G/915GM support added by Alan Hourihane
* <alanh@tungstengraphics.com>.
*/
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/init.h>
@ -17,6 +9,21 @@
#include <linux/agp_backend.h>
#include "agp.h"
#define PCI_DEVICE_ID_INTEL_82946GZ_HB 0x2970
#define PCI_DEVICE_ID_INTEL_82946GZ_IG 0x2972
#define PCI_DEVICE_ID_INTEL_82965G_1_HB 0x2980
#define PCI_DEVICE_ID_INTEL_82965G_1_IG 0x2982
#define PCI_DEVICE_ID_INTEL_82965Q_HB 0x2990
#define PCI_DEVICE_ID_INTEL_82965Q_IG 0x2992
#define PCI_DEVICE_ID_INTEL_82965G_HB 0x29A0
#define PCI_DEVICE_ID_INTEL_82965G_IG 0x29A2
#define IS_I965 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82946GZ_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_82965G_HB)
/* Intel 815 register */
#define INTEL_815_APCONT 0x51
#define INTEL_815_ATTBASE_MASK ~0x1FFFFFFF
@ -40,6 +47,8 @@
#define I915_GMCH_GMS_STOLEN_48M (0x6 << 4)
#define I915_GMCH_GMS_STOLEN_64M (0x7 << 4)
/* Intel 965G registers */
#define I965_MSAC 0x62
/* Intel 7505 registers */
#define INTEL_I7505_APSIZE 0x74
@ -354,6 +363,7 @@ static struct aper_size_info_fixed intel_i830_sizes[] =
/* The 64M mode still requires a 128k gatt */
{64, 16384, 5},
{256, 65536, 6},
{512, 131072, 7},
};
static struct _intel_i830_private {
@ -377,7 +387,11 @@ static void intel_i830_init_gtt_entries(void)
/* We obtain the size of the GTT, which is also stored (for some
* reason) at the top of stolen memory. Then we add 4KB to that
* for the video BIOS popup, which is also stored in there. */
size = agp_bridge->driver->fetch_size() + 4;
if (IS_I965)
size = 512 + 4;
else
size = agp_bridge->driver->fetch_size() + 4;
if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82830_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) {
@ -423,7 +437,7 @@ static void intel_i830_init_gtt_entries(void)
if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_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_82945GM_HB)
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB || IS_I965 )
gtt_entries = MB(48) - KB(size);
else
gtt_entries = 0;
@ -433,7 +447,7 @@ static void intel_i830_init_gtt_entries(void)
if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_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_82945GM_HB)
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB || IS_I965)
gtt_entries = MB(64) - KB(size);
else
gtt_entries = 0;
@ -791,6 +805,77 @@ static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge)
return 0;
}
static int intel_i965_fetch_size(void)
{
struct aper_size_info_fixed *values;
u32 offset = 0;
u8 temp;
#define I965_512MB_ADDRESS_MASK (3<<1)
values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes);
pci_read_config_byte(intel_i830_private.i830_dev, I965_MSAC, &temp);
temp &= I965_512MB_ADDRESS_MASK;
switch (temp) {
case 0x00:
offset = 0; /* 128MB */
break;
case 0x06:
offset = 3; /* 512MB */
break;
default:
case 0x02:
offset = 2; /* 256MB */
break;
}
agp_bridge->previous_size = agp_bridge->current_size = (void *)(values + offset);
return values[offset].size;
}
/* The intel i965 automatically initializes the agp aperture during POST.
+ * Use the memory already set aside for in the GTT.
+ */
static int intel_i965_create_gatt_table(struct agp_bridge_data *bridge)
{
int page_order;
struct aper_size_info_fixed *size;
int num_entries;
u32 temp;
size = agp_bridge->current_size;
page_order = size->page_order;
num_entries = size->num_entries;
agp_bridge->gatt_table_real = NULL;
pci_read_config_dword(intel_i830_private.i830_dev, I915_MMADDR, &temp);
temp &= 0xfff00000;
intel_i830_private.gtt = ioremap((temp + (512 * 1024)) , 512 * 1024);
if (!intel_i830_private.gtt)
return -ENOMEM;
intel_i830_private.registers = ioremap(temp,128 * 4096);
if (!intel_i830_private.registers)
return -ENOMEM;
temp = readl(intel_i830_private.registers+I810_PGETBL_CTL) & 0xfffff000;
global_cache_flush(); /* FIXME: ? */
/* we have to call this as early as possible after the MMIO base address is known */
intel_i830_init_gtt_entries();
agp_bridge->gatt_table = NULL;
agp_bridge->gatt_bus_addr = temp;
return 0;
}
static int intel_fetch_size(void)
{
@ -1489,6 +1574,29 @@ static struct agp_bridge_driver intel_915_driver = {
.agp_destroy_page = agp_generic_destroy_page,
};
static struct agp_bridge_driver intel_i965_driver = {
.owner = THIS_MODULE,
.aperture_sizes = intel_i830_sizes,
.size_type = FIXED_APER_SIZE,
.num_aperture_sizes = 4,
.needs_scratch_page = TRUE,
.configure = intel_i915_configure,
.fetch_size = intel_i965_fetch_size,
.cleanup = intel_i915_cleanup,
.tlb_flush = intel_i810_tlbflush,
.mask_memory = intel_i810_mask_memory,
.masks = intel_i810_masks,
.agp_enable = intel_i810_agp_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = intel_i965_create_gatt_table,
.free_gatt_table = intel_i830_free_gatt_table,
.insert_memory = intel_i915_insert_entries,
.remove_memory = intel_i915_remove_entries,
.alloc_by_type = intel_i830_alloc_by_type,
.free_by_type = intel_i810_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
};
static struct agp_bridge_driver intel_7505_driver = {
.owner = THIS_MODULE,
@ -1684,6 +1792,35 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev,
bridge->driver = &intel_845_driver;
name = "945GM";
break;
case PCI_DEVICE_ID_INTEL_82946GZ_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82946GZ_IG))
bridge->driver = &intel_i965_driver;
else
bridge->driver = &intel_845_driver;
name = "946GZ";
break;
case PCI_DEVICE_ID_INTEL_82965G_1_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82965G_1_IG))
bridge->driver = &intel_i965_driver;
else
bridge->driver = &intel_845_driver;
name = "965G";
break;
case PCI_DEVICE_ID_INTEL_82965Q_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82965Q_IG))
bridge->driver = &intel_i965_driver;
else
bridge->driver = &intel_845_driver;
name = "965Q";
break;
case PCI_DEVICE_ID_INTEL_82965G_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82965G_IG))
bridge->driver = &intel_i965_driver;
else
bridge->driver = &intel_845_driver;
name = "965G";
break;
case PCI_DEVICE_ID_INTEL_7505_0:
bridge->driver = &intel_7505_driver;
name = "E7505";
@ -1827,6 +1964,10 @@ 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_82946GZ_HB),
ID(PCI_DEVICE_ID_INTEL_82965G_1_HB),
ID(PCI_DEVICE_ID_INTEL_82965Q_HB),
ID(PCI_DEVICE_ID_INTEL_82965G_HB),
{ }
};