mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-28 15:13:55 +08:00
52 lines
1.1 KiB
ArmAsm
52 lines
1.1 KiB
ArmAsm
|
/* The registers for cross calls will be:
|
||
|
|
*
|
||
|
|
* DATA 0: [low 32-bits] Address of function to call, jmp to this
|
||
|
|
* [high 32-bits] MMU Context Argument 0, place in %g5
|
||
|
|
* DATA 1: Address Argument 1, place in %g1
|
||
|
|
* DATA 2: Address Argument 2, place in %g7
|
||
|
|
*
|
||
|
|
* With this method we can do most of the cross-call tlb/cache
|
||
|
|
* flushing very quickly.
|
||
|
|
*/
|
||
|
|
.align 32
|
||
|
|
.globl do_ivec
|
||
|
|
.type do_ivec,#function
|
||
|
|
do_ivec:
|
||
|
|
mov 0x40, %g3
|
||
|
|
ldxa [%g3 + %g0] ASI_INTR_R, %g3
|
||
|
|
sethi %hi(KERNBASE), %g4
|
||
|
|
cmp %g3, %g4
|
||
|
|
bgeu,pn %xcc, do_ivec_xcall
|
||
|
|
srlx %g3, 32, %g5
|
||
|
|
stxa %g0, [%g0] ASI_INTR_RECEIVE
|
||
|
|
membar #Sync
|
||
|
|
|
||
|
|
sethi %hi(ivector_table_pa), %g2
|
||
|
|
ldx [%g2 + %lo(ivector_table_pa)], %g2
|
||
|
|
sllx %g3, 4, %g3
|
||
|
|
add %g2, %g3, %g3
|
||
|
|
|
||
|
|
TRAP_LOAD_IRQ_WORK_PA(%g6, %g1)
|
||
|
|
|
||
|
|
ldx [%g6], %g5
|
||
|
|
stxa %g5, [%g3] ASI_PHYS_USE_EC
|
||
|
|
stx %g3, [%g6]
|
||
|
|
wr %g0, 1 << PIL_DEVICE_IRQ, %set_softint
|
||
|
|
retry
|
||
|
|
do_ivec_xcall:
|
||
|
|
mov 0x50, %g1
|
||
|
|
ldxa [%g1 + %g0] ASI_INTR_R, %g1
|
||
|
|
srl %g3, 0, %g3
|
||
|
|
|
||
|
|
mov 0x60, %g7
|
||
|
|
ldxa [%g7 + %g0] ASI_INTR_R, %g7
|
||
|
|
stxa %g0, [%g0] ASI_INTR_RECEIVE
|
||
|
|
membar #Sync
|
||
|
|
ba,pt %xcc, 1f
|
||
|
|
nop
|
||
|
|
|
||
|
|
.align 32
|
||
|
|
1: jmpl %g3, %g0
|
||
|
|
nop
|
||
|
|
.size do_ivec,.-do_ivec
|