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authortsutsui <tsutsui@NetBSD.org>2013-12-31 14:24:09 +0000
committertsutsui <tsutsui@NetBSD.org>2013-12-31 14:24:09 +0000
commit3538b46d723edee30c377b27e27a56cf0fec3d87 (patch)
tree1fe3ea2e06592dc5f1c7013809172eef8cd4cca7 /sys/dev
parent065b4ca8e45c528ad132fc3a6a5df30ce9f1a0b3 (diff)
Use softint(9) properly to process TX/RX data between tty(4) layer.
It could cause possible locking issue to call tty(4) layer functions from IPL_SERIAL interrupt handlers. Changes details (mostly similar to com(4) and z8530tty(4)): - allocate RX buffer and put data and status into it in the interrupt handler - call t_linesw->l_rint from the software interrupt handler - set the only first byte in siottystart() and use t_outq buffer to send multiple TX data - call the next t_linesw->l_start on TX complete in the software interrupt handler Also put more changes: - handle cnmagic(9) properly (now entering ddb(4) by console BREAK works) - allocate tty in the attach function as other drivers rather than first open - use proper variable types
Diffstat (limited to 'sys/dev')
0 files changed, 0 insertions, 0 deletions