github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2025-09-07 03:40:27 +00:00
Code Issues Projects Releases Wiki Activity

HV: io: move I/O emulation post-work to io.c

Browse Source 
There are some functions for the post work of I/O emulation. This patch moves
these functions to io.c for clarity. No functional change introduced.

Signed-off-by: Junjie Mao <junjie.mao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Junjie Mao
2018-07-27 19:50:44 +08:00
committed by lijinxia
parent d8179519b9
commit 941eb9db02
3 changed files with 64 additions and 61 deletions
Download Patch File Download Diff File Expand all files Collapse all files

62
hypervisor/arch/x86/io.c
View File

@@ -107,6 +107,68 @@ int32_t dm_emulate_mmio_post(struct vcpu *vcpu)
return emulate_mmio_post(vcpu, io_req);
}
static void complete_ioreq(struct vcpu *vcpu)
{
union vhm_request_buffer *req_buf;
struct vhm_request *vhm_req;
req_buf = (union vhm_request_buffer *)
vcpu->vm->sw.io_shared_page;
vhm_req = &req_buf->req_queue[vcpu->vcpu_id];
vhm_req->valid = 0;
atomic_store32(&vcpu->ioreq_pending, 0U);
}
void emulate_io_post(struct vcpu *vcpu)
{
union vhm_request_buffer *req_buf;
struct vhm_request *vhm_req;
req_buf = (union vhm_request_buffer *)vcpu->vm->sw.io_shared_page;
vhm_req = &req_buf->req_queue[vcpu->vcpu_id];
if ((vhm_req->valid == 0) ||
((vhm_req->processed != REQ_STATE_SUCCESS) &&
(vhm_req->processed != REQ_STATE_FAILED))) {
return;
}
/*
* If vcpu is in Zombie state and will be destroyed soon. Just
* mark ioreq done and don't resume vcpu.
*/
if (vcpu->state == VCPU_ZOMBIE) {
complete_ioreq(vcpu);
return;
}
switch (vcpu->req.type) {
case REQ_MMIO:
request_vcpu_pre_work(vcpu, ACRN_VCPU_MMIO_COMPLETE);
break;
case REQ_PORTIO:
case REQ_PCICFG:
/* REQ_PORTIO on 0xcf8 & 0xcfc may switch to REQ_PCICFG in some
* cases. It works to apply the post-work for REQ_PORTIO on
* REQ_PCICFG because the format of the first 28 bytes of
* REQ_PORTIO & REQ_PCICFG requests are exactly the same and
* post-work is mainly interested in the read value.
*/
dm_emulate_pio_post(vcpu);
break;
default:
/* REQ_WP can only be triggered on writes which do not need
* post-work. Just mark the ioreq done. */
complete_ioreq(vcpu);
break;
}
resume_vcpu(vcpu);
}
/**
* Try handling the given request by any port I/O handler registered in the
* hypervisor.