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overlay fix for Nforce and Nforce2 cards (RAM detection updated)

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8469 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen
2004-07-26 11:26:12 +00:00
parent 62b6801d11
commit a7b24bba52
10 changed files with 61 additions and 50 deletions
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src/add-ons/kernel/drivers/graphics/nvidia/driver.c
+8 -4
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@@ -789,13 +789,17 @@ static status_t open_hook (const char* name, uint32 flags, void** cookie) {
{
case 0x01a010de: /* Nvidia GeForce2 Integrated GPU */
/* device at bus #0, device #0, function #1 holds value at byte-index 0x7C */
si->ps.memory_size =
((((*pci_bus->read_pci_config)(0, 0, 1, 0x7c, 4)) & 0x000007c0) >> 6) + 1;
si->ps.memory_size = 1024 * 1024 *
(((((*pci_bus->read_pci_config)(0, 0, 1, 0x7c, 4)) & 0x000007c0) >> 6) + 1);
/* last 64kB RAM is used for the BIOS (or something else?) */
si->ps.memory_size -= (64 * 1024);
break;
case 0x01f010de: /* Nvidia GeForce4 MX Integrated GPU */
/* device at bus #0, device #0, function #1 holds value at byte-index 0x84 */
si->ps.memory_size =
((((*pci_bus->read_pci_config)(0, 0, 1, 0x84, 4)) & 0x000007f0) >> 4) + 1;
si->ps.memory_size = 1024 * 1024 *
(((((*pci_bus->read_pci_config)(0, 0, 1, 0x84, 4)) & 0x000007f0) >> 4) + 1);
/* last 64kB RAM is used for the BIOS (or something else?) */
si->ps.memory_size -= (64 * 1024);
break;
default:
/* all other cards have own RAM: the amount of which is determined in the