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intel-gtt: i965: use detected gtt size for mapping 

Also move the Sandybdridge size detection into gtt_total_entries, like
the rest.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Daniel Vetter 2010-08-28 16:14:32 +02:00 committed by Chris Wilson
parent ccc4e67be5
commit 210b23c2f7
1 changed files with 34 additions and 42 deletions
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76
drivers/char/agp/intel-gtt.c
View File

@ -712,7 +712,7 @@ static unsigned int intel_gtt_total_entries(void)
{
int size;
if (IS_G33 || INTEL_GTT_GEN >= 4) {
if (IS_G33 || INTEL_GTT_GEN == 4 || INTEL_GTT_GEN == 5) {
u32 pgetbl_ctl;
pgetbl_ctl = readl(intel_private.registers+I810_PGETBL_CTL);
@ -741,6 +741,24 @@ static unsigned int intel_gtt_total_entries(void)
size = KB(512);
}
return size/4;
} else if (INTEL_GTT_GEN == 6) {
u16 snb_gmch_ctl;
pci_read_config_word(intel_private.pcidev, SNB_GMCH_CTRL, &snb_gmch_ctl);
switch (snb_gmch_ctl & SNB_GTT_SIZE_MASK) {
default:
case SNB_GTT_SIZE_0M:
printk(KERN_ERR "Bad GTT size mask: 0x%04x.\n", snb_gmch_ctl);
size = MB(0);
break;
case SNB_GTT_SIZE_1M:
size = MB(1);
break;
case SNB_GTT_SIZE_2M:
size = MB(2);
break;
}
return size/4;
} else {
/* On previous hardware, the GTT size was just what was
@ -1327,44 +1345,18 @@ static unsigned long intel_gen6_mask_memory(struct agp_bridge_data *bridge,
static void intel_i965_get_gtt_range(int *gtt_offset, int *gtt_size)
{
u16 snb_gmch_ctl;
switch (intel_private.bridge_dev->device) {
case PCI_DEVICE_ID_INTEL_GM45_HB:
case PCI_DEVICE_ID_INTEL_EAGLELAKE_HB:
case PCI_DEVICE_ID_INTEL_Q45_HB:
case PCI_DEVICE_ID_INTEL_G45_HB:
case PCI_DEVICE_ID_INTEL_G41_HB:
case PCI_DEVICE_ID_INTEL_B43_HB:
case PCI_DEVICE_ID_INTEL_IRONLAKE_D_HB:
case PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB:
case PCI_DEVICE_ID_INTEL_IRONLAKE_MA_HB:
case PCI_DEVICE_ID_INTEL_IRONLAKE_MC2_HB:
*gtt_offset = *gtt_size = MB(2);
break;
case PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB:
case PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB:
case PCI_DEVICE_ID_INTEL_SANDYBRIDGE_S_HB:
switch (INTEL_GTT_GEN) {
case 5:
case 6:
*gtt_offset = MB(2);
pci_read_config_word(intel_private.pcidev, SNB_GMCH_CTRL, &snb_gmch_ctl);
switch (snb_gmch_ctl & SNB_GTT_SIZE_MASK) {
default:
case SNB_GTT_SIZE_0M:
printk(KERN_ERR "Bad GTT size mask: 0x%04x.\n", snb_gmch_ctl);
*gtt_size = MB(0);
break;
case SNB_GTT_SIZE_1M:
*gtt_size = MB(1);
break;
case SNB_GTT_SIZE_2M:
*gtt_size = MB(2);
break;
}
break;
case 4:
default:
*gtt_offset = *gtt_size = KB(512);
*gtt_offset = KB(512);
break;
}
*gtt_size = intel_private.base.gtt_total_entries * 4;
}
/* The intel i965 automatically initializes the agp aperture during POST.
@ -1387,17 +1379,17 @@ static int intel_i965_create_gatt_table(struct agp_bridge_data *bridge)
temp &= 0xfff00000;
intel_private.registers = ioremap(temp, 128 * 4096);
if (!intel_private.registers)
return -ENOMEM;
intel_private.base.gtt_total_entries = intel_gtt_total_entries();
intel_i965_get_gtt_range(&gtt_offset, &gtt_size);
intel_private.gtt = ioremap((temp + gtt_offset) , gtt_size);
if (!intel_private.gtt)
return -ENOMEM;
intel_private.base.gtt_total_entries = gtt_size / 4;
intel_private.registers = ioremap(temp, 128 * 4096);
if (!intel_private.registers) {
if (!intel_private.gtt) {
iounmap(intel_private.gtt);
return -ENOMEM;
}