qi-hardware/openwrt-xburst
1
0
Fork 0
mirror of git://projects.qi-hardware.com/openwrt-xburst.git synced 2025-04-21 12:27:27 +03:00
Code Activity

[mcs814x] do not use MULTI_IRQ_HANDLER it is bogus on our platform

Browse Source 
This caused stalls in the Ethernet DMA block, so until properly
written and sorted out, fallback to the assembly version instead.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32470 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
florian
2012-06-20 21:57:45 +00:00
parent 85bb2ebefa
commit 3a5b7c7629
3 changed files with 25 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
target/linux/mcs814x/files-3.3/arch/arm/mach-mcs814x/include/mach/entry-macro.S
View File

@@ -4,3 +4,26 @@
.macro arch_ret_to_user, tmp1, tmp2
.endm
.macro get_irqnr_preamble, base, tmp
ldr \base, =mcs814x_intc_base @ base virtual address of AIC peripheral
ldr \base, [\base]
.endm
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
mov \tmp, #0x40
ldr \irqstat, [\base, \tmp]
tst \irqstat, \irqstat @ test if no active IRQ's
beq 1002f @ if no active irqs return with status 0
mov \irqnr, #0 @ start from irq zero
mov \tmp, #1 @ the mask initially 1
1001:
tst \irqstat, \tmp @ and with mask
addeq \irqnr, \irqnr, #1 @ if zero then add one to nr
moveq \tmp, \tmp, lsl #1 @ shift mask one to left
beq 1001b @ if zero then loop again
mov \irqstat, \tmp @ save the return mask
mov \tmp, #0x00 @ ICR offset
str \irqstat, [\base, \tmp] @ clear irq with selected mask
1002:
.endm