diff options
Diffstat (limited to 'src/roms/SLOF/slof/fs/pci-device.fs')
| -rw-r--r-- | src/roms/SLOF/slof/fs/pci-device.fs | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/src/roms/SLOF/slof/fs/pci-device.fs b/src/roms/SLOF/slof/fs/pci-device.fs new file mode 100644 index 0000000..7b17758 --- /dev/null +++ b/src/roms/SLOF/slof/fs/pci-device.fs @@ -0,0 +1,105 @@ +\ ***************************************************************************** +\ * Copyright (c) 2004, 2008 IBM Corporation +\ * All rights reserved. +\ * This program and the accompanying materials +\ * are made available under the terms of the BSD License +\ * which accompanies this distribution, and is available at +\ * http://www.opensource.org/licenses/bsd-license.php +\ * +\ * Contributors: +\ * IBM Corporation - initial implementation +\ ****************************************************************************/ + +get-node CONSTANT my-phandle + +\ get the PUID from the node above +s" my-puid" my-phandle parent $call-static CONSTANT my-puid + +\ define the config reads +: config-b@ puid >r my-puid TO puid my-space + rtas-config-b@ r> TO puid ; +: config-w@ puid >r my-puid TO puid my-space + rtas-config-w@ r> TO puid ; +: config-l@ puid >r my-puid TO puid my-space + rtas-config-l@ r> TO puid ; + +\ define the config writes +: config-b! puid >r my-puid TO puid my-space + rtas-config-b! r> TO puid ; +: config-w! puid >r my-puid TO puid my-space + rtas-config-w! r> TO puid ; +: config-l! puid >r my-puid TO puid my-space + rtas-config-l! r> TO puid ; + +\ for Debug purposes: dumps the whole config space +: config-dump puid >r my-puid TO puid my-space pci-dump r> TO puid ; + +\ prepare the device for subsequent use +\ this word should be overloaded by the device file (if present) +\ the device file can call this file before implementing +\ its own open functionality +: open + puid >r \ save the old puid + my-puid TO puid \ set up the puid to the devices Hostbridge + pci-master-enable \ And enable Bus Master, IO and MEM access again. + pci-mem-enable \ enable mem access + pci-io-enable \ enable io access + r> TO puid \ restore puid + true +; + +\ close the previously opened device +\ this word should be overloaded by the device file (if present) +\ the device file can call this file after its implementation +\ of own close functionality +: close + puid >r \ save the old puid + my-puid TO puid \ set up the puid + pci-device-disable \ and disable the device + r> TO puid \ restore puid +; + +s" dma-function.fs" included + +\ generate the rom-fs filename from the vendor and device ID "pci-device_VENDORID_DEVICEID.fs" +: devicefile ( -- str len ) + s" pci-device_" + my-space pci-vendor@ 4 int2str $cat + s" _" $cat + my-space pci-device@ 4 int2str $cat + s" .fs" $cat +; + +\ generate the rom-fs filename from the base-class id "pci-class_BASECLASS.fs" +: classfile ( -- str len ) + s" pci-class_" + my-space pci-class@ 10 rshift 2 int2str $cat + s" .fs" $cat +; + +\ Set up the device with either default or special settings +: setup ( -- ) + \ is there special handling for this device, given vendor and device id? + devicefile romfs-lookup ?dup + IF + \ give it a special treatment + evaluate + ELSE + classfile romfs-lookup ?dup + IF + \ give it a pci-class related treatment + evaluate + ELSE + \ no special handling for this device, attempt autoconfiguration + my-space pci-class-name type 2a emit cr + my-space pci-device-generic-setup + THEN + THEN +; + +\ Disable Bus Master, Memory Space and I/O Space for this device +\ if Bus Master function is needed it should be enabled/disabled by open/close in the device driver code +pci-device-disable + +\ Enalbe #PERR and #SERR reporting +pci-error-enable + +\ Print out device information +my-space 44 pci-out \ config-addr ascii('D') + +\ and set up the device +setup |
