| 0,0 → 1,106 |
|---|
| /* |
| * Intel AGPGART routines. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/mod_devicetable.h> |
| #include <errno-base.h> |
| #include <linux/pci.h> |
| |
| //#include <linux/agp_backend.h> |
| //#include <asm/smp.h> |
| #include <linux/spinlock.h> |
| |
| #include "agp.h" |
| #include "intel-agp.h" |
| |
| #include <syscall.h> |
| |
| #define __devinit |
| #define PCI_VENDOR_ID_INTEL 0x8086 |
| |
| |
| int intel_gmch_probe(struct pci_dev *pdev, |
| struct agp_bridge_data *bridge); |
| |
| int intel_agp_enabled; |
| |
| struct agp_bridge_data *agp_alloc_bridge(void) |
| { |
| struct agp_bridge_data *bridge; |
| |
| bridge = kzalloc(sizeof(*bridge), GFP_KERNEL); |
| if (!bridge) |
| return NULL; |
| |
| atomic_set(&bridge->agp_in_use, 0); |
| atomic_set(&bridge->current_memory_agp, 0); |
| |
| // if (list_empty(&agp_bridges)) |
| // agp_bridge = bridge; |
| |
| return bridge; |
| } |
| |
| static int __devinit agp_intel_probe(struct pci_dev *pdev, |
| const struct pci_device_id *ent) |
| { |
| struct agp_bridge_data *bridge; |
| u8 cap_ptr = 0; |
| int err = -ENODEV; |
| |
| cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP); |
| |
| bridge = agp_alloc_bridge(); |
| if (!bridge) |
| return -ENOMEM; |
| |
| bridge->capndx = cap_ptr; |
| |
| if (intel_gmch_probe(pdev, bridge)) |
| { |
| // pci_set_drvdata(pdev, bridge); |
| // err = agp_add_bridge(bridge); |
| // if (!err) |
| intel_agp_enabled = 1; |
| err = 0; |
| } |
| |
| return err; |
| } |
| |
| static struct pci_device_id agp_intel_pci_table[] = { |
| #define ID(x) \ |
| { \ |
| .class = (PCI_CLASS_BRIDGE_HOST << 8), \ |
| .class_mask = ~0, \ |
| .vendor = PCI_VENDOR_ID_INTEL, \ |
| .device = x, \ |
| .subvendor = PCI_ANY_ID, \ |
| .subdevice = PCI_ANY_ID, \ |
| } |
| ID(PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB), |
| ID(PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB), |
| ID(PCI_DEVICE_ID_INTEL_SANDYBRIDGE_S_HB), |
| { } |
| }; |
| |
| static pci_dev_t agp_device; |
| |
| int init_agp(void) |
| { |
| const struct pci_device_id *ent; |
| |
| ent = find_pci_device(&agp_device, agp_intel_pci_table); |
| |
| if( unlikely(ent == NULL) ) |
| { |
| dbgprintf("host controller not found\n"); |
| return -ENODEV; |
| }; |
| |
| return agp_intel_probe(&agp_device.pci_dev, ent); |
| } |
| |
| |