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typo fixes
Most of these fixes were already submitted for old kernel versions, and were approved, but for some reason they never made it into the releases. Because this is a consolidation of a couple old missed patches, it touches both Kconfigs and documentation texts. Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Adrian Bunk <bunk@kernel.org>
This commit is contained in:
committed by
Adrian Bunk
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commit
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@@ -5,7 +5,7 @@ Introduction
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------------
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The kernel provides an interface to manage DMA transfers
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using the DMA channels in the cpu, so that the central
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using the DMA channels in the CPU, so that the central
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duty of managing channel mappings, and programming the
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channel generators is in one place.
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@@ -17,24 +17,24 @@ DMA Channel Ordering
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channels to all sources, which means that some devices
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have a restricted number of channels that can be used.
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To allow flexibilty for each cpu type and board, the
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dma code can be given an dma ordering structure which
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To allow flexibility for each CPU type and board, the
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DMA code can be given a DMA ordering structure which
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allows the order of channel search to be specified, as
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well as allowing the prohibition of certain claims.
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struct s3c24xx_dma_order has a list of channels, and
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each channel within has a slot for a list of dma
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channel numbers. The slots are searched in order, for
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the presence of a dma channel number with DMA_CH_VALID
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orred in.
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each channel within has a slot for a list of DMA
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channel numbers. The slots are searched in order for
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the presence of a DMA channel number with DMA_CH_VALID
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or-ed in.
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If the order has the flag DMA_CH_NEVER set, then after
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checking the channel list, the system will return no
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found channel, thus denying the request.
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A board support file can call s3c24xx_dma_order_set()
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to register an complete ordering set. The routine will
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copy the data, so the original can be discared with
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to register a complete ordering set. The routine will
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copy the data, so the original can be discarded with
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__initdata.
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@@ -2188,7 +2188,7 @@ Your cooperation is appreciated.
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136-143 char Unix98 PTY slaves
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0 = /dev/pts/0 First Unix98 pseudo-TTY
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1 = /dev/pts/1 Second Unix98 pesudo-TTY
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1 = /dev/pts/1 Second Unix98 pseudo-TTY
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...
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These device nodes are automatically generated with
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@@ -32,7 +32,7 @@ braindamaged document, if it's finally working, well, it's working.
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For one reason or another, low level drivers don't receive as much
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attention or testing as core code, and bugs on driver detach or
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initilaization failure doesn't happen often enough to be noticeable.
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initialization failure don't happen often enough to be noticeable.
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Init failure path is worse because it's much less travelled while
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needs to handle multiple entry points.
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@@ -160,7 +160,7 @@ resources on failure. For example,
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devres_release_group(dev, NULL);
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return err_code;
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As resource acquision failure usually means probe failure, constructs
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As resource acquisition failure usually means probe failure, constructs
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like above are usually useful in midlayer driver (e.g. libata core
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layer) where interface function shouldn't have side effect on failure.
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For LLDs, just returning error code suffices in most cases.
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@@ -3,7 +3,7 @@ Deferred IO
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Deferred IO is a way to delay and repurpose IO. It uses host memory as a
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buffer and the MMU pagefault as a pretrigger for when to perform the device
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IO. The following example may be a useful explaination of how one such setup
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IO. The following example may be a useful explanation of how one such setup
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works:
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- userspace app like Xfbdev mmaps framebuffer
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@@ -28,7 +28,7 @@ a relatively more expensive operation.
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For some types of nonvolatile high latency displays, the desired image is
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the final image rather than the intermediate stages which is why it's okay
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to not update for each write that is occuring.
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to not update for each write that is occurring.
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It may be the case that this is useful in other scenarios as well. Paul Mundt
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has mentioned a case where it is beneficial to use the page count to decide
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@@ -54,7 +54,7 @@ OPTIONS
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aname=name aname specifies the file tree to access when the server is
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offering several exported file systems.
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cache=mode specifies a cacheing policy. By default, no caches are used.
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cache=mode specifies a caching policy. By default, no caches are used.
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loose = no attempts are made at consistency,
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intended for exclusive, read-only mounts
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@@ -21,10 +21,10 @@ software test suits to do stressful testing on IPF.
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Below is a sample application as part of the whole tool. The sample
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can be used as a working test tool. Or it can be expanded to include
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more features. It also can be a integrated into a libary or other user
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more features. It also can be a integrated into a library or other user
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application to have more thorough test.
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The sample application takes err.conf as error configuation input. Gcc
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The sample application takes err.conf as error configuration input. GCC
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compiles the code. After you install err_inject driver, you can run
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this sample application to inject errors.
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@@ -809,7 +809,7 @@ int err_inj()
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}
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/* Create semaphore: If one_lock, one semaphore for all processors.
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Otherwise, one sempaphore for each processor. */
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Otherwise, one semaphore for each processor. */
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if (one_lock) {
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if (create_sem(0)) {
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printf("Can not create semaphore...exit\n");
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@@ -170,7 +170,7 @@ major controller faults (ROM checksum and RAM test) and such things as stuck
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keys. Any keys down at power-up are presumed to be stuck, and their BREAK
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(sic) code is returned (which without the preceding MAKE code is a flag for a
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keyboard error). If the controller self-test completes without error, the code
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0xF0 is returned. (This code will be used to indicate the version/rlease of
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0xF0 is returned. (This code will be used to indicate the version/release of
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the ikbd controller. The first release of the ikbd is version 0xF0, should
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there be a second release it will be 0xF1, and so on.)
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The ikbd defaults to a mouse position reporting with threshold of 1 unit in
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@@ -413,7 +413,7 @@ INTERROGATION MODE.
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%nnnnmmmm ; where m is JOYSTICK1 state
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; and n is JOYSTICK0 state
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Sets the ikbd to do nothing but monitor the serial command lne, maintain the
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Sets the ikbd to do nothing but monitor the serial command line, maintain the
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time-of-day clock, and monitor the joystick. The rate sets the interval
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between joystick samples.
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N.B. The user should not set the rate higher than the serial communications
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@@ -446,10 +446,10 @@ The sample interval should be as constant as possible.
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; until vertical cursor key is generated before RY
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; has elapsed
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VX ; length (in tenths of seconds) of joystick closure
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; until horizontal cursor keystokes are generated
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; until horizontal cursor keystrokes are generated
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; after RX has elapsed
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VY ; length (in tenths of seconds) of joystick closure
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; until vertical cursor keystokes are generated
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; until vertical cursor keystrokes are generated
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; after RY has elapsed
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In this mode, joystick 0 is scanned in a way that simulates cursor keystrokes.
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@@ -7,7 +7,7 @@ This is not a reference. Comments and corrections are welcome. To contact me,
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send an email to: johann.deneux@gmail.com
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** WARNING **
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I may not be held responsible for any dammage or harm caused if you try to
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I shall not be held responsible for any damage or harm caused if you try to
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send data to your I-Force device based on what you read in this document.
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** Preliminary Notes:
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@@ -151,13 +151,13 @@ OP= ff
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Query command. Length varies according to the query type.
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The general format of this packet is:
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ff 01 QUERY [INDEX] CHECKSUM
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reponses are of the same form:
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responses are of the same form:
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FF LEN QUERY VALUE_QUERIED CHECKSUM2
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where LEN = 1 + length(VALUE_QUERIED)
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**** Query ram size ****
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QUERY = 42 ('B'uffer size)
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The device should reply with the same packet plus two additionnal bytes
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The device should reply with the same packet plus two additional bytes
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containing the size of the memory:
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ff 03 42 03 e8 CS would mean that the device has 1000 bytes of ram available.
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@@ -234,12 +234,16 @@ is the amount of memory apparently needed for every set of parameters:
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** Appendix: How to study the protocol ? **
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1. Generate effects using the force editor provided with the DirectX SDK, or use Immersion Studio (freely available at their web site in the developer section: www.immersion.com)
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2. Start a soft spying RS232 or USB (depending on where you connected your joystick/wheel). I used ComPortSpy from fCoder (alpha version!)
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1. Generate effects using the force editor provided with the DirectX SDK, or
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use Immersion Studio (freely available at their web site in the developer section:
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www.immersion.com)
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2. Start a soft spying RS232 or USB (depending on where you connected your
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joystick/wheel). I used ComPortSpy from fCoder (alpha version!)
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3. Play the effect, and watch what happens on the spy screen.
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A few words about ComPortSpy:
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At first glance, this soft seems, hum, well... buggy. In fact, data appear with a few seconds latency. Personnaly, I restart it every time I play an effect.
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At first glance, this software seems, hum, well... buggy. In fact, data appear with a
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few seconds latency. Personally, I restart it every time I play an effect.
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Remember it's free (as in free beer) and alpha!
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** URLS **
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@@ -79,7 +79,7 @@ In the _init function, which is called either upon module load or when
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booting the kernel, it grabs the required resources (it should also check
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for the presence of the device).
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Then it allocates a new input device structure with input_aloocate_device()
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Then it allocates a new input device structure with input_allocate_device()
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and sets up input bitfields. This way the device driver tells the other
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parts of the input systems what it is - what events can be generated or
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accepted by this input device. Our example device can only generate EV_KEY
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@@ -76,9 +76,9 @@
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* Title: "Conceptual Architecture of the Linux Kernel"
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Author: Ivan T. Bowman.
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URL: http://plg.uwaterloo.ca/~itbowman/papers/CS746G-a1.html
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Keywords: conceptual software arquitecture, extracted design,
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Keywords: conceptual software architecture, extracted design,
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reverse engineering, system structure.
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Description: Conceptual software arquitecture of the Linux kernel,
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Description: Conceptual software architecture of the Linux kernel,
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automatically extracted from the source code. Very detailed. Good
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figures. Gives good overall kernel understanding.
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@@ -37,7 +37,7 @@ all, distributions. There is, however, additional software that is
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required. The firmware used by the chip is the intellectual property
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of Broadcom and they have not given the bcm43xx team redistribution
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rights to this firmware. Since we cannot legally redistribute
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the firwmare we cannot include it with the driver. Furthermore, it
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the firmware we cannot include it with the driver. Furthermore, it
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cannot be placed in the downloadable archives of any distributing
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organization; therefore, the user is responsible for obtaining the
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firmware and placing it in the appropriate location so that the driver
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@@ -689,7 +689,7 @@ such as the AFS filesystem. This permits such a utility to:
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buffers manipulated directly.
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To use the RxRPC facility, a kernel utility must still open an AF_RXRPC socket,
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bind an addess as appropriate and listen if it's to be a server socket, but
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bind an address as appropriate and listen if it's to be a server socket, but
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then it passes this to the kernel interface functions.
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The kernel interface functions are as follows:
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@@ -12,7 +12,7 @@
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For in-depth information, you can consult:
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o The UDP-Lite Homepage: http://www.erg.abdn.ac.uk/users/gerrit/udp-lite/
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Fom here you can also download some example application source code.
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From here you can also download some example application source code.
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o The UDP-Lite HOWTO on
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http://www.erg.abdn.ac.uk/users/gerrit/udp-lite/files/UDP-Lite-HOWTO.txt
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@@ -223,7 +223,7 @@
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While it is important that such cases are dealt with correctly, they
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are (annoyingly) rare: UDP-Lite is designed for optimising multimedia
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performance over wireless (or generally noisy) links and thus smaller
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coverage lenghts are likely to be expected.
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coverage lengths are likely to be expected.
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V) UDP-LITE RUNTIME STATISTICS AND THEIR MEANING
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@@ -259,7 +259,7 @@
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VI) IPTABLES
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There is packet match support for UDP-Lite as well as support for the LOG target.
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If you copy and paste the following line into /etc/protcols,
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If you copy and paste the following line into /etc/protocols,
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udplite 136 UDP-Lite # UDP-Lite [RFC 3828]
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@@ -39,7 +39,7 @@ resume=<swap_file_partition> resume_offset=<swap_file_offset>
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where <swap_file_partition> is the partition on which the swap file is located
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and <swap_file_offset> is the offset of the swap header determined by the
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application in 2) (of course, this step may be carried out automatically
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by the same application that determies the swap file's header offset using the
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by the same application that determines the swap file's header offset using the
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FIBMAP ioctl)
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OR
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@@ -36,8 +36,8 @@ Causes of EEH Errors
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EEH was originally designed to guard against hardware failure, such
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as PCI cards dying from heat, humidity, dust, vibration and bad
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electrical connections. The vast majority of EEH errors seen in
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"real life" are due to eithr poorly seated PCI cards, or,
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unfortunately quite commonly, due device driver bugs, device firmware
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"real life" are due to either poorly seated PCI cards, or,
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unfortunately quite commonly, due to device driver bugs, device firmware
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bugs, and sometimes PCI card hardware bugs.
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The most common software bug, is one that causes the device to
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@@ -17,12 +17,12 @@ passed by the boot loader to the kernel at boot time. The device tree
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describes what devices are present on the board and how they are
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connected. The device tree can either be passed as a binary blob (as
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described in Documentation/powerpc/booting-without-of.txt), or passed
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by Open Firmare (IEEE 1275) compatible firmware using an OF compatible
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by Open Firmware (IEEE 1275) compatible firmware using an OF compatible
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client interface API.
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This document specifies the requirements on the device-tree for mpc5200
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based boards. These requirements are above and beyond the details
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specified in either the OpenFirmware spec or booting-without-of.txt
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specified in either the Open Firmware spec or booting-without-of.txt
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All new mpc5200-based boards are expected to match this document. In
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cases where this document is not sufficient to support a new board port,
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@@ -73,8 +73,8 @@ match on the compatible list; the 'most compatible' driver should be
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selected.
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The split between the MPC5200 and the MPC5200B leaves a bit of a
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connundrum. How should the compatible property be set up to provide
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maximum compatability information; but still acurately describe the
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conundrum. How should the compatible property be set up to provide
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maximum compatibility information; but still accurately describe the
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chip? For the MPC5200; the answer is easy. Most of the SoC devices
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originally appeared on the MPC5200. Since they didn't exist anywhere
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else; the 5200 compatible properties will contain only one item;
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@@ -84,7 +84,7 @@ The 5200B is almost the same as the 5200, but not quite. It fixes
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silicon bugs and it adds a small number of enhancements. Most of the
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devices either provide exactly the same interface as on the 5200. A few
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devices have extra functions but still have a backwards compatible mode.
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To express this infomation as completely as possible, 5200B device trees
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To express this information as completely as possible, 5200B device trees
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should have two items in the compatible list;
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"mpc5200b-<device>\0mpc5200-<device>". It is *strongly* recommended
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that 5200B device trees follow this convention (instead of only listing
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@@ -199,7 +199,7 @@ ethernet@<addr> network mpc5200-fec MPC5200 ethernet device
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ata@<addr> ata mpc5200-ata IDE ATA interface
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i2c@<addr> i2c mpc5200-i2c I2C controller
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usb@<addr> usb-ohci-be mpc5200-ohci,ohci-be USB controller
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xlb@<addr> xlb mpc5200-xlb XLB arbritrator
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xlb@<addr> xlb mpc5200-xlb XLB arbitrator
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Important child node properties
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name type description
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@@ -120,7 +120,7 @@ The following information is available in this file:
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list size to avoid SCSI malloc pool fragmentation.
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- Cleanup channel display in our /proc output.
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- Workaround duplicate device entries in the mid-layer
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devlice list during add-single-device.
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device list during add-single-device.
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1.3.6 (March 28th, 2003)
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- Correct a double free in the Domain Validation code.
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@@ -159,7 +159,7 @@ The following information is available in this file:
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- Add support for 2.5.X's scsi_report_device_reset().
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6.2.34 (May 5th, 2003)
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- Fix locking regression instroduced in 6.2.29 that
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- Fix locking regression introduced in 6.2.29 that
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could cause a lock order reversal between the io_request_lock
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and our per-softc lock. This was only possible on RH9,
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SuSE, and kernel.org 2.4.X kernels.
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@@ -264,7 +264,7 @@ The following information is available in this file:
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Option: tag_info:{{value[,value...]}[,{value[,value...]}...]}
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Definition: Set the per-target tagged queue depth on a
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per controller basis. Both controllers and targets
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may be ommitted indicating that they should retain
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may be omitted indicating that they should retain
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the default tag depth.
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Examples: tag_info:{{16,32,32,64,8,8,,32,32,32,32,32,32,32,32,32}
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On Controller 0
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@@ -290,7 +290,7 @@ The following information is available in this file:
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-----------------------------------------------------------------
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Option: dv: {value[,value...]}
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Definition: Set Domain Validation Policy on a per-controller basis.
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Controllers may be ommitted indicating that
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Controllers may be omitted indicating that
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they should retain the default read streaming setting.
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Example: dv:{-1,0,,1,1,0}
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On Controller 0 leave DV at its default setting.
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@@ -21,7 +21,7 @@
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versions older than 4.0 do not work with kernels 2.4.0 or later! If you
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try to compile your kernel with the wrong driver source, the
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compilation is aborted and you get a corresponding error message. This is
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no bug in the driver. It prevents you from using the wrong sourcecode
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no bug in the driver; it prevents you from using the wrong source code
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with the wrong kernel version.
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Authors of this Driver
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@@ -58,7 +58,7 @@
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5 Users' Manual
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5.1 Commandline Parameters
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5.2 Troubleshooting
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5.3 Bugreports
|
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5.3 Bug reports
|
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5.4 Support WWW-page
|
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6 References
|
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7 Credits to
|
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@@ -72,12 +72,12 @@
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1 Abstract
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||||
----------
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This README-file describes the IBM SCSI-subsystem low level driver for
|
||||
Linux. The descriptions which were formerly kept in the source-code have
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||||
been taken out to this file to easify the codes' readability. The driver
|
||||
Linux. The descriptions which were formerly kept in the source code have
|
||||
been taken out of this file to simplify the codes readability. The driver
|
||||
description has been updated, as most of the former description was already
|
||||
quite outdated. The history of the driver development is also kept inside
|
||||
here. Multiple historical developments have been summarized to shorten the
|
||||
textsize a bit. At the end of this file you can find a small manual for
|
||||
text size a bit. At the end of this file you can find a small manual for
|
||||
this driver and hints to get it running on your machine.
|
||||
|
||||
2 Driver Description
|
||||
@@ -186,7 +186,7 @@
|
||||
between 0 and 7). The IBM SCSI-2 F/W adapter offers this on up to two
|
||||
busses and provides support for 30 logical devices at the same time, where
|
||||
in wide-addressing mode you can have 16 puns with 32 luns on each device.
|
||||
This section dexribes you the handling of devices on non-F/W adapters.
|
||||
This section describes the handling of devices on non-F/W adapters.
|
||||
Just imagine, that you can have 16 * 32 = 512 devices on a F/W adapter
|
||||
which means a lot of possible devices for such a small machine.
|
||||
|
||||
@@ -209,10 +209,10 @@
|
||||
--------------------------------------------------------
|
||||
One consequence of information hiding is that the real (pun,lun)
|
||||
numbers are also hidden. The two possibilities to get around this problem
|
||||
is to offer fake pun/lun combinations to the operating system or to
|
||||
are to offer fake pun/lun combinations to the operating system or to
|
||||
delete the whole mapping of the adapter and to reassign the ldns, using
|
||||
the immediate assign command of the SCSI-subsystem for probing through
|
||||
all possible pun/lun combinations. a ldn is a "logical device number"
|
||||
all possible pun/lun combinations. An ldn is a "logical device number"
|
||||
which is used by IBM SCSI-subsystems to access some valid SCSI-device.
|
||||
At the beginning of the development of this driver, the following approach
|
||||
was used:
|
||||
@@ -251,9 +251,9 @@
|
||||
lun>0 or to non-existing devices, in order to satisfy the subsystem, if
|
||||
there are less than 15 SCSI-devices connected. In the case of more than 15
|
||||
devices, the dynamical mapping goes active. If the get_scsi[][] reports a
|
||||
device to be existant, but it has no ldn assigned, it gets a ldn out of 7
|
||||
to 14. The numbers are assigned in cyclic order. Therefore it takes 8
|
||||
dynamical reassignments on the SCSI-devices, until a certain device
|
||||
device to be existent, but it has no ldn assigned, it gets an ldn out of 7
|
||||
to 14. The numbers are assigned in cyclic order, therefore it takes 8
|
||||
dynamical reassignments on the SCSI-devices until a certain device
|
||||
loses its ldn again. This assures that dynamical remapping is avoided
|
||||
during intense I/O between up to 15 SCSI-devices (means pun,lun
|
||||
combinations). A further advantage of this method is that people who
|
||||
@@ -551,7 +551,7 @@
|
||||
than devices are available, they are assigned to non existing pun,lun
|
||||
combinations to satisfy the adapter. With this, the dynamical mapping
|
||||
was possible to implement. (For further info see the text in the
|
||||
source-code and in the description below. Read the description
|
||||
source code and in the description below. Read the description
|
||||
below BEFORE installing this driver on your system!)
|
||||
2) Changed the name IBMMCA_DRIVER_VERSION to IBMMCA_SCSI_DRIVER_VERSION.
|
||||
3) The LED-display shows on PS/2-95 no longer the ldn, but the SCSI-ID
|
||||
@@ -762,9 +762,9 @@
|
||||
- Michael Lang
|
||||
|
||||
Apr 23, 2000 (v3.2pre1)
|
||||
1) During a very long time, I collected a huge amount of bugreports from
|
||||
1) During a very long time, I collected a huge amount of bug reports from
|
||||
various people, trying really quite different things on their SCSI-
|
||||
PS/2s. Today, all these bugreports are taken into account and should be
|
||||
PS/2s. Today, all these bug reports are taken into account and should be
|
||||
mostly solved. The major topics were:
|
||||
- Driver crashes during boottime by no obvious reason.
|
||||
- Driver panics while the midlevel-SCSI-driver is trying to inquire
|
||||
@@ -819,7 +819,7 @@
|
||||
- Michael Lang
|
||||
|
||||
July 17, 2000 (v3.2pre8)
|
||||
A long period of collecting bugreports from all corners of the world
|
||||
A long period of collecting bug reports from all corners of the world
|
||||
now lead to the following corrections to the code:
|
||||
1) SCSI-2 F/W support crashed with a COMMAND ERROR. The reason for this
|
||||
was that it is possible to disable Fast-SCSI for the external bus.
|
||||
@@ -873,7 +873,7 @@
|
||||
July 26, 2000 (v3.2pre11)
|
||||
1) I passed a horrible weekend getting mad with NMIs on kernel 2.2.14 and
|
||||
a model 9595. Asking around in the community, nobody except of me has
|
||||
seen such errors. Weired, but I am trying to recompile everything on
|
||||
seen such errors. Weird, but I am trying to recompile everything on
|
||||
the model 9595. Maybe, as I use a specially modified gcc, that could
|
||||
cause problems. But, it was not the reason. The true background was,
|
||||
that the kernel was compiled for i386 and the 9595 has a 486DX-2.
|
||||
@@ -886,7 +886,7 @@
|
||||
alive rotator during boottime. This makes sense, when no monitor is
|
||||
connected to the system. You can get rid of all display activity, if
|
||||
you do not use any parameter or just ibmmcascsi=activity, for the
|
||||
harddrive activity LED, existant on all PS/2, except models 8595-XXX.
|
||||
harddrive activity LED, existent on all PS/2, except models 8595-XXX.
|
||||
If no monitor is available, please use ibmmcascsi=display, which works
|
||||
fine together with the linuxinfo utility for the LED-panel.
|
||||
- Michael Lang
|
||||
@@ -1115,7 +1115,7 @@
|
||||
If this really happens, do also send e-mail to the maintainer, as
|
||||
forced detection should be never necessary. Forced detection is in
|
||||
principal some flaw of the driver adapter detection and goes into
|
||||
bugreports.
|
||||
bug reports.
|
||||
Q: The driver screws up, if it starts to probe SCSI-devices, is there
|
||||
some way out of it?
|
||||
A: Yes, that was some recognition problem of the correct SCSI-adapter
|
||||
@@ -1172,7 +1172,7 @@
|
||||
recommended version is 3.2 or later. Here, the F/W support is in
|
||||
a stable and reliable condition. Wide-addressing is in addition
|
||||
supported.
|
||||
Q: I get a Ooops message and something like "killing interrupt".
|
||||
Q: I get an Oops message and something like "killing interrupt".
|
||||
A: The reason for this is that the IBM SCSI-subsystem only sends a
|
||||
termination status back, if some error appeared. In former releases
|
||||
of the driver, it was not checked, if the termination status block
|
||||
@@ -1213,21 +1213,21 @@
|
||||
problem. Not yet tried, but guessing that it could work. To get this,
|
||||
set unchecked_isa_dma argument of ibmmca.h from 0 to 1.
|
||||
|
||||
5.3 Bugreports
|
||||
5.3 Bug reports
|
||||
--------------
|
||||
If you really find bugs in the sourcecode or the driver will successfully
|
||||
If you really find bugs in the source code or the driver will successfully
|
||||
refuse to work on your machine, you should send a bug report to me. The
|
||||
best for this is to follow the instructions on the WWW-page for this
|
||||
driver. Fill out the bug-report form, placed on the WWW-page and ship it,
|
||||
so the bugs can be taken into account with maximum efforts. But, please
|
||||
do not send bug reports about this driver to Linus Torvalds or Leonard
|
||||
Zubkoff, as Linus is burried in E-Mail and Leonard is supervising all
|
||||
Zubkoff, as Linus is buried in E-Mail and Leonard is supervising all
|
||||
SCSI-drivers and won't have the time left to look inside every single
|
||||
driver to fix a bug and especially DO NOT send modified code to Linus
|
||||
Torvalds or Alan J. Cox which has not been checked here!!! They are both
|
||||
quite burried in E-mail (as me, sometimes, too) and one should first check
|
||||
quite buried in E-mail (as me, sometimes, too) and one should first check
|
||||
for problems on my local teststand. Recently, I got a lot of
|
||||
bugreports for errors in the ibmmca.c code, which I could not imagine, but
|
||||
bug reports for errors in the ibmmca.c code, which I could not imagine, but
|
||||
a look inside some Linux-distribution showed me quite often some modified
|
||||
code, which did no longer work on most other machines than the one of the
|
||||
modifier. Ok, so now that there is maintenance service available for this
|
||||
@@ -1261,7 +1261,7 @@
|
||||
some e-mail directly, but at least with the same information as required by
|
||||
the formular.
|
||||
|
||||
If you have extensive bugreports, including Ooops messages and
|
||||
If you have extensive bug reports, including Oops messages and
|
||||
screen-shots, please feel free to send it directly to the address
|
||||
of the maintainer, too. The current address of the maintainer is:
|
||||
|
||||
@@ -1318,7 +1318,7 @@
|
||||
detailed bug reports and ideas for this driver (and his
|
||||
patience ;-)).
|
||||
Alan J. Cox
|
||||
for his bugreports and his bold activities in cross-checking
|
||||
for his bug reports and his bold activities in cross-checking
|
||||
the driver-code with his teststand.
|
||||
|
||||
7.2 Sponsors & Supporters
|
||||
|
||||
@@ -20,12 +20,12 @@ I2S
|
||||
===
|
||||
|
||||
I2S is a common 4 wire DAI used in HiFi, STB and portable devices. The Tx and
|
||||
Rx lines are used for audio transmision, whilst the bit clock (BCLK) and
|
||||
Rx lines are used for audio transmission, whilst the bit clock (BCLK) and
|
||||
left/right clock (LRC) synchronise the link. I2S is flexible in that either the
|
||||
controller or CODEC can drive (master) the BCLK and LRC clock lines. Bit clock
|
||||
usually varies depending on the sample rate and the master system clock
|
||||
(SYSCLK). LRCLK is the same as the sample rate. A few devices support separate
|
||||
ADC and DAC LRCLK's, this allows for similtanious capture and playback at
|
||||
ADC and DAC LRCLK's, this allows for simultaneous capture and playback at
|
||||
different sample rates.
|
||||
|
||||
I2S has several different operating modes:-
|
||||
@@ -41,12 +41,12 @@ I2S has several different operating modes:-
|
||||
PCM
|
||||
===
|
||||
|
||||
PCM is another 4 wire interface, very similar to I2S, that can support a more
|
||||
PCM is another 4 wire interface, very similar to I2S, which can support a more
|
||||
flexible protocol. It has bit clock (BCLK) and sync (SYNC) lines that are used
|
||||
to synchronise the link whilst the Tx and Rx lines are used to transmit and
|
||||
receive the audio data. Bit clock usually varies depending on sample rate
|
||||
whilst sync runs at the sample rate. PCM also supports Time Division
|
||||
Multiplexing (TDM) in that several devices can use the bus similtaniuosly (This
|
||||
Multiplexing (TDM) in that several devices can use the bus simultaneously (this
|
||||
is sometimes referred to as network mode).
|
||||
|
||||
Common PCM operating modes:-
|
||||
|
||||
Some files were not shown because too many files have changed in this diff Show More
Reference in New Issue
Block a user