~$ cat /proc/driver/nvidia/agp/card
Fast Writes:     Supported
SBA:             Not Supported
AGP Rates:       4x 2x 1x
Registers:       0x1f000017:0x1f000102
~$ cat /proc/driver/nvidia/agp/
card         host-bridge  status

~$ cat /proc/driver/nvidia/agp/host-bridge
Host Bridge:     PCI device 8086:7190
Fast Writes:     Not Supported
SBA:             Supported
AGP Rates:       2x 1x
Registers:       0x1f000203:0x00000102

~$ cat /proc/driver/nvidia/agp/status
Status:          Enabled
Driver:          AGPGART
AGP Rate:        2x
Fast Writes:     Disabled
SBA:             Disabled
~$