summaryrefslogtreecommitdiffstats
path: root/Documentation/zorro.txt
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-07-15 12:58:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-07-15 12:58:58 -0700
commit486088bc4689f826b80aa317b45ac9e42e8b25ee (patch)
treeadf5847a6119d24da990d9e336f005c4a316e6be /Documentation/zorro.txt
parent52f6c588c77b76d548201470c2a28263a41b462b (diff)
parent43e5f7e1fa66531777c49791014c3124ea9208d8 (diff)
downloadlinux-486088bc4689f826b80aa317b45ac9e42e8b25ee.tar.bz2
Merge tag 'standardize-docs' of git://git.lwn.net/linux
Pull documentation format standardization from Jonathan Corbet: "This series converts a number of top-level documents to the RST format without incorporating them into the Sphinx tree. The hope is to bring some uniformity to kernel documentation and, perhaps more importantly, have our existing docs serve as an example of the desired formatting for those that will be added later. Mauro has gone through and fixed up a lot of top-level documentation files to make them conform to the RST format, but without moving or renaming them in any way. This will help when we incorporate the ones we want to keep into the Sphinx doctree, but the real purpose is to bring a bit of uniformity to our documentation and let the top-level docs serve as examples for those writing new ones" * tag 'standardize-docs' of git://git.lwn.net/linux: (84 commits) docs: kprobes.txt: Fix whitespacing tee.txt: standardize document format cgroup-v2.txt: standardize document format dell_rbu.txt: standardize document format zorro.txt: standardize document format xz.txt: standardize document format xillybus.txt: standardize document format vfio.txt: standardize document format vfio-mediated-device.txt: standardize document format unaligned-memory-access.txt: standardize document format this_cpu_ops.txt: standardize document format svga.txt: standardize document format static-keys.txt: standardize document format smsc_ece1099.txt: standardize document format SM501.txt: standardize document format siphash.txt: standardize document format sgi-ioc4.txt: standardize document format SAK.txt: standardize document format rpmsg.txt: standardize document format robust-futexes.txt: standardize document format ...
Diffstat (limited to 'Documentation/zorro.txt')
-rw-r--r--Documentation/zorro.txt59
1 files changed, 30 insertions, 29 deletions
diff --git a/Documentation/zorro.txt b/Documentation/zorro.txt
index d530971beb00..664072b017e3 100644
--- a/Documentation/zorro.txt
+++ b/Documentation/zorro.txt
@@ -1,12 +1,13 @@
- Writing Device Drivers for Zorro Devices
- ----------------------------------------
+========================================
+Writing Device Drivers for Zorro Devices
+========================================
-Written by Geert Uytterhoeven <geert@linux-m68k.org>
-Last revised: September 5, 2003
+:Author: Written by Geert Uytterhoeven <geert@linux-m68k.org>
+:Last revised: September 5, 2003
-1. Introduction
----------------
+Introduction
+------------
The Zorro bus is the bus used in the Amiga family of computers. Thanks to
AutoConfig(tm), it's 100% Plug-and-Play.
@@ -20,12 +21,12 @@ There are two types of Zorro buses, Zorro II and Zorro III:
with Zorro II. The Zorro III address space lies outside the first 16 MB.
-2. Probing for Zorro Devices
-----------------------------
+Probing for Zorro Devices
+-------------------------
-Zorro devices are found by calling `zorro_find_device()', which returns a
-pointer to the `next' Zorro device with the specified Zorro ID. A probe loop
-for the board with Zorro ID `ZORRO_PROD_xxx' looks like:
+Zorro devices are found by calling ``zorro_find_device()``, which returns a
+pointer to the ``next`` Zorro device with the specified Zorro ID. A probe loop
+for the board with Zorro ID ``ZORRO_PROD_xxx`` looks like::
struct zorro_dev *z = NULL;
@@ -35,8 +36,8 @@ for the board with Zorro ID `ZORRO_PROD_xxx' looks like:
...
}
-`ZORRO_WILDCARD' acts as a wildcard and finds any Zorro device. If your driver
-supports different types of boards, you can use a construct like:
+``ZORRO_WILDCARD`` acts as a wildcard and finds any Zorro device. If your driver
+supports different types of boards, you can use a construct like::
struct zorro_dev *z = NULL;
@@ -49,24 +50,24 @@ supports different types of boards, you can use a construct like:
}
-3. Zorro Resources
-------------------
+Zorro Resources
+---------------
Before you can access a Zorro device's registers, you have to make sure it's
not yet in use. This is done using the I/O memory space resource management
-functions:
+functions::
request_mem_region()
release_mem_region()
-Shortcuts to claim the whole device's address space are provided as well:
+Shortcuts to claim the whole device's address space are provided as well::
zorro_request_device
zorro_release_device
-4. Accessing the Zorro Address Space
-------------------------------------
+Accessing the Zorro Address Space
+---------------------------------
The address regions in the Zorro device resources are Zorro bus address
regions. Due to the identity bus-physical address mapping on the Zorro bus,
@@ -78,26 +79,26 @@ The treatment of these regions depends on the type of Zorro space:
explicitly using z_ioremap().
Conversion from bus/physical Zorro II addresses to kernel virtual addresses
- and vice versa is done using:
+ and vice versa is done using::
virt_addr = ZTWO_VADDR(bus_addr);
bus_addr = ZTWO_PADDR(virt_addr);
- Zorro III address space must be mapped explicitly using z_ioremap() first
- before it can be accessed:
+ before it can be accessed::
virt_addr = z_ioremap(bus_addr, size);
...
z_iounmap(virt_addr);
-5. References
--------------
+References
+----------
-linux/include/linux/zorro.h
-linux/include/uapi/linux/zorro.h
-linux/include/uapi/linux/zorro_ids.h
-linux/arch/m68k/include/asm/zorro.h
-linux/drivers/zorro
-/proc/bus/zorro
+#. linux/include/linux/zorro.h
+#. linux/include/uapi/linux/zorro.h
+#. linux/include/uapi/linux/zorro_ids.h
+#. linux/arch/m68k/include/asm/zorro.h
+#. linux/drivers/zorro
+#. /proc/bus/zorro