- 09 Jan, 2023 39 commits
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Sven Schnelle authored
Fixes a few checkpatch warning about EXPORT_SYMBOL being at the end of the file instead of being next to the functions. Signed-off-by:
Sven Schnelle <svens@linux.ibm.com> Acked-by:
Heiko Carstens <hca@linux.ibm.com> Signed-off-by:
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Sven Schnelle authored
Fix remaining checkpatch issues, like misplaced brackets, whitespace and similar things. No functional change. Signed-off-by:
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Sven Schnelle authored
Use msecs_to_jiffies() instead of HZ/10. Signed-off-by:
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Sven Schnelle authored
fix the following and similar checkpatch warnings: CHECK: multiple assignments should be avoided + tp->cx = tp->saved_cx = 0; Signed-off-by:
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Sven Schnelle authored
fix the following and similar checkpatch warnings: CHECK: Avoid CamelCase: <ESnormal> + enum { ESnormal, ESesc, ESsquare, ESparen, ESgetpars }; Signed-off-by: -
Sven Schnelle authored
To let the user know about function key bindings, print them next to the Running/History field at the lower right of the screen. Also print the scrollback position. Signed-off-by:
Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by:
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Sven Schnelle authored
With the previous change this reduces the size of struct tty3270_attribute from four to two bytes. As we have this struct allocated for each character cell, this saves quite some memory. Signed-off-by:
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Sven Schnelle authored
As we're only supportign 8 colors, we don't need 8 bits. Reduce the size to 4 bits to save memory. Signed-off-by:
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Sven Schnelle authored
Command line recalling is the last user of the 3270 custom malloc() like allocator. Remove this dependency by using a statically allocated buffer for the saved command lines, and also remove the allocator. Signed-off-by:
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Sven Schnelle authored
Preparation patch to allow removing the custom 3270 memory allocator. Signed-off-by:
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Sven Schnelle authored
The length of the screen line is variable with the 3270 protocol. For each attribute (foreground, background color, highlighting etc) we need 3 bytes: the set attribute order, the attribute number, and the value of the attribute. This means that depending on screen content, we might end up 3*3 bytes addtional data for a single character. Allocating the maximum possible amount of memory is quite a lot, and we cannot easily extend the lines by allocating memory because we might get called from atomic context. Failing to extend the memory would also be bad as that would mean that we could miss kernel messages in oom conditions. Therefore move the conversion to a 3270 datastream to tty3270_update(), and use only single line buffer. Signed-off-by:
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Sven Schnelle authored
Updating the status line is almost the same as generating it when redrawing the screen. However, the code is much easier to read when doing so. Signed-off-by:
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Sven Schnelle authored
There are lots of places adding attributes or orders to the datastream. Add a few helpers to make that code shorter and easier to read. Signed-off-by:
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Sven Schnelle authored
Instead of always converting the character set, only convert them when the line is really displayed. Signed-off-by:
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Sven Schnelle authored
To make the upcoming patches easier to read, move tty3270_convert_line() before changing code. No functional change. Signed-off-by:
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Sven Schnelle authored
All callers of raw3270_buffer_address() are calculating the offset from some x/y coordinates. Move that calculation inside of the function, so user can pass the x/y values directly. Note that negative values are relative to the end-of-line or end-of-screen. Signed-off-by:
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Sven Schnelle authored
No functional change (except more memory consumption), in preparation for the line buffer rework. Signed-off-by:
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Sven Schnelle authored
There a quite a few places using 'tp->view.rows - 2'. Add a helper function for this. This will also be used when a function key help line will be added. Signed-off-by:
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Sven Schnelle authored
To make the code easier to read, split up tty3270_convertline() into several subfunctions: - tty3270_resize_line() to realloc the line if it doesn't have enough space left - tty3270_required_length() to calculate how much space we need - tty3270_add_attributes() to add the color and highlight attributes - tty3270_add_reset_attributes() to reset the attributes at the end of the line Signed-off-by:
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Sven Schnelle authored
There's no easy way to figure out whether the user has re-connected to the z/VM session. When the user re-connected with a different geometry to z/VM, the screen layout is broken. Allow the user to force a resizing by pressing the Clear Key. Signed-off-by:
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Sven Schnelle authored
This change was initially made to reduce code duplication when the con3270 and tty3270 shared the same resize code. It still makes sense to move the resize workqueue to raw3270 in case we add some other view later. Signed-off-by:
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Sven Schnelle authored
There are a few places (and there would be more with the following commits) like this: raw3270_request_reset(cp->kreset); raw3270_request_set_cmd(cp->kreset, TC_WRITE); raw3270_request_add_data(cp->kreset, &kreset_data, 1); raw3270_start(&cp->view, cp->kreset); i.e reset a request, setting the command, adding payload, and starting the request. Add a helper raw3270_start_request() which takes a command and the payload as argument and calls the approppriate functions. Signed-off-by:
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Sven Schnelle authored
Use AID_* instead of hex numbers to make the code a bit easier to read. also convert the if/else blocks to a switch statement in tty3270_read_tasklet(). Signed-off-by:
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Sven Schnelle authored
With 'TERM=vt220' zsh is sending several NUL characters with the prompt to the tty. Both xterm and the linux drm console seem to ignore them. Ignore them in tty3270 as well. Signed-off-by:
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Sven Schnelle authored
Add support for ESC(B and ESC(0 to switch between character charset and graphics charset. Used in vt100 and later terminal generations. Signed-off-by:
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Sven Schnelle authored
Add support for ASCII S0/S1 to switch between character charset and graphic charset. Signed-off-by:
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Sven Schnelle authored
3270 terminals support 8 background colors. Add the code to utilize them. Unfortunately the line erase code need to be adjusted: Without background colors, it was sufficient to just set the line length to zero. With background colors, we need to put spaces with the correct background color. Signed-off-by:
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Sven Schnelle authored
In preparation of background color and graphic escape support add a structure for attributes can be copied at once. Signed-off-by:
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Sven Schnelle authored
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Sven Schnelle authored
This makes the code easier to read. Signed-off-by:
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Sven Schnelle authored
This makes the code easier to read. Signed-off-by:
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Sven Schnelle authored
fix function prototypes split over two lines like: static void foobar(void) and fix superfluous spaces in declarations like foo * bar Signed-off-by:
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Sven Schnelle authored
fix function prototypes split over two lines like: static void foobar(void) and fix superfluous spaces in declarations like foo * bar Signed-off-by:
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Sven Schnelle authored
The current code uses diag210 to infer the 3270 geometry from the model number when running on z/VM. This doesn't work well as almost all 3270 software clients report as 3279-2 with a custom resolution. tty3270 assumes it has a 80x24 terminal connected because of the -2 suffix. Use diag 8c to fetch the realy geometry from z/VM. Note that this doesn't allow dynamic resizing, i.e. reconnecting to a z/VM session with a different geometry. Signed-off-by:
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Sven Schnelle authored
Rename the driver file to con3270 to be in sync with con3215.c. This removes CONFIG_TN3270_TTY, it is now always build if CONFIG_TN3270 is enabled. Signed-off-by:
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Sven Schnelle authored
There were two flavours of 3270 drivers: con3270, which provides a console driver, and tty3270 providing a tty driver. A user could switch with PF3 between the two views. While this sounds nice, it's a bit annoying: If the user enters a command which triggers a kernel message, he always has to switch back and forth to see the message. Unify both views to have kernel messages and tty in one screen, like it is on almost all other platforms. This also has the nice side effect of removing a lot of duplicate code. Signed-off-by:
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Sven Schnelle authored
Will be used later for the console driver. Signed-off-by:
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Nicholas Piggin authored
cputime_t was a core kernel type, removed by commits ed5c8c85..b672592f. As explained in commit b672592f ("sched/cputime: Remove generic asm headers"), the final cleanup is for the arch to provide cputime_to_nsec[s](). Commit e53051e7 ("s390/cputime: provide archicture specific cputime_to_nsecs") did that, but just didn't remove the then-unused cputime_to_usecs() and associated remnants. Signed-off-by:
Nicholas Piggin <npiggin@gmail.com> Reviewed-by:
Alexander Gordeev <agordeev@linux.ibm.com> Link: https://lore.kernel.org/r/20221006105635.115775-1-npiggin@gmail.comSigned-off-by:
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Thomas Richter authored
CPU Measurement counting facility events PROBLEM_STATE_CPU_CYCLES(32) and PROBLEM_STATE_INSTRUCTIONS(33) are valid events. However the device driver returns error -EOPNOTSUPP when these event are to be installed. Fix this and allow installation of events PROBLEM_STATE_CPU_CYCLES, PROBLEM_STATE_CPU_CYCLES:u, PROBLEM_STATE_INSTRUCTIONS and PROBLEM_STATE_INSTRUCTIONS:u. Kernel space counting only is still not supported by s390. Signed-off-by:
Thomas Richter <tmricht@linux.ibm.com> Acked-by:
Sumanth Korikkar <sumanthk@linux.ibm.com> Signed-off-by:
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- 08 Jan, 2023 1 commit
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Linus Torvalds authored
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