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| author | Akira Takeuchi <takeuchi.akr@jp.panasonic.com> | 2010-10-27 17:28:54 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2010-10-27 17:28:54 +0100 |
| commit | 37e4ec96365a4b1179b994861e824e3c2fce32a1 (patch) | |
| tree | 1c59c551600c94fff8fecbf29e9bfbcb60b2d429 /arch/mn10300/Kconfig | |
| parent | ab244c1a08a4e234cd3761a8aba3cb5a7bbe525a (diff) | |
| download | lwn-37e4ec96365a4b1179b994861e824e3c2fce32a1.tar.gz lwn-37e4ec96365a4b1179b994861e824e3c2fce32a1.zip | |
MN10300: Make various interrupt priority settings configurable
Make the settings of interrupt priorities used by various services configurable
at run time.
Signed-off-by: Akira Takeuchi <takeuchi.akr@jp.panasonic.com>
Signed-off-by: Kiyoshi Owada <owada.kiyoshi@jp.panasonic.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'arch/mn10300/Kconfig')
| -rw-r--r-- | arch/mn10300/Kconfig | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig index a1f334ce0a36..a0a16e6e4a4e 100644 --- a/arch/mn10300/Kconfig +++ b/arch/mn10300/Kconfig @@ -351,6 +351,80 @@ config MN10300_TTYSM2_CTS endmenu +menu "Interrupt request priority options" + +comment "[!] NOTE: A lower number/level indicates a higher priority (0 is highest, 6 is lowest)" + +comment "____Non-maskable interrupt levels____" +comment "The following must be set to a higher priority than local_irq_disable() and on-chip serial" + +config GDBSTUB_IRQ_LEVEL + int "GDBSTUB interrupt priority" + depends on GDBSTUB + range 0 1 if LINUX_CLI_LEVEL = 2 + range 0 2 if LINUX_CLI_LEVEL = 3 + range 0 3 if LINUX_CLI_LEVEL = 4 + range 0 4 if LINUX_CLI_LEVEL = 5 + range 0 5 if LINUX_CLI_LEVEL = 6 + default 0 + +comment "The following must be set to a higher priority than local_irq_disable()" + +config MN10300_SERIAL_IRQ_LEVEL + int "MN10300 on-chip serial interrupt priority" + depends on MN10300_TTYSM + range 1 1 if LINUX_CLI_LEVEL = 2 + range 1 2 if LINUX_CLI_LEVEL = 3 + range 1 3 if LINUX_CLI_LEVEL = 4 + range 1 4 if LINUX_CLI_LEVEL = 5 + range 1 5 if LINUX_CLI_LEVEL = 6 + default 1 + +comment "-" +comment "____Maskable interrupt levels____" + +config LINUX_CLI_LEVEL + int "The highest interrupt priority excluded by local_irq_disable() (2-6)" + range 2 6 + default 2 + help + local_irq_disable() doesn't actually disable maskable interrupts - + what it does is restrict the levels of interrupt which are permitted + (a lower level indicates a higher priority) by lowering the value in + EPSW.IM from 7. Any interrupt is permitted for which the level is + lower than EPSW.IM. + + Certain interrupts, such as GDBSTUB and virtual MN10300 on-chip + serial DMA interrupts are allowed to interrupt normal disabled + sections. + +comment "The following must be set to a equal to or lower priority than LINUX_CLI_LEVEL" + +config TIMER_IRQ_LEVEL + int "Kernel timer interrupt priority" + range LINUX_CLI_LEVEL 6 + default 4 + +config PCI_IRQ_LEVEL + int "PCI interrupt priority" + depends on PCI + range LINUX_CLI_LEVEL 6 + default 5 + +config ETHERNET_IRQ_LEVEL + int "Ethernet interrupt priority" + depends on SMC91X || SMC911X || SMSC911X + range LINUX_CLI_LEVEL 6 + default 6 + +config EXT_SERIAL_IRQ_LEVEL + int "External serial port interrupt priority" + depends on SERIAL_8250 + range LINUX_CLI_LEVEL 6 + default 6 + +endmenu + source "mm/Kconfig" menu "Power management options" |