diff options
| author | Mike Smith <msmith@FreeBSD.org> | 1999-01-29 01:18:15 +0000 |
|---|---|---|
| committer | Mike Smith <msmith@FreeBSD.org> | 1999-01-29 01:18:15 +0000 |
| commit | 7546e83ec1bf0e0c7fa0ba912a1fa1fbd1ad3425 (patch) | |
| tree | 9165ec303c9b55286e3b9703d081168def01ba6c /sys/pccard | |
| parent | 7f1050341ca5d23c8a3002835debc88bafe707ab (diff) | |
| download | src-7546e83ec1bf0e0c7fa0ba912a1fa1fbd1ad3425.tar.gz src-7546e83ec1bf0e0c7fa0ba912a1fa1fbd1ad3425.zip | |
Allow the interrupt allocated to the PCIC to be tuned from the kernel
environment by setting the variable machdep.pccard.pcic_irq. If
the IRQ is invalid, the PCIC will run in polled mode.
Notes
Notes:
svn path=/head/; revision=43370
Diffstat (limited to 'sys/pccard')
| -rw-r--r-- | sys/pccard/pcic.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/sys/pccard/pcic.c b/sys/pccard/pcic.c index 943bbc03443a..651c1d5b4bc8 100644 --- a/sys/pccard/pcic.c +++ b/sys/pccard/pcic.c @@ -526,7 +526,7 @@ int pcic_probe(void) { int slotnum, validslots = 0; - u_int free_irqs; + u_int free_irqs, desired_irq; struct slot *slt; struct pcic_slot *sp; unsigned char c; @@ -716,7 +716,19 @@ pcic_probe(void) * then attempt to get one. */ if (pcic_irq == 0) { + pcic_imask = soft_imask; + + /* See if the user has requested a specific IRQ */ + if (getenv_int("machdep.pccard.pcic_irq", &desired_irq)) + /* legal IRQ? */ + if ((desired_irq >= 1) && (desired_irq <= ICU_LEN) && + ((1ul << desired_irq) & soft_imask)) + pcic_imask = 1ul << desired_irq; + else + /* illeagal, disable use of IRQ */ + pcic_imask = 0; + pcic_irq = pccard_alloc_intr(free_irqs, pcicintr, 0, &pcic_imask, NULL); if (pcic_irq < 0) |