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CPU read/write reg: use generic IHK messaging interface

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Change-Id: Ia9637d1516d9329fdadf37822bfce7594d69105f
This commit is contained in:
Balazs Gerofi
2020-03-09 16:42:16 +09:00
committed by Masamichi Takagi
parent bb725f5f50
commit eac414d6d8
6 changed files with 40 additions and 64 deletions
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14
kernel/host.c
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@ -619,6 +619,7 @@ static int syscall_packet_handler(struct ihk_ikc_channel_desc *c,
{
struct ikc_scd_packet *packet = __packet;
struct ikc_scd_packet pckt;
struct ihk_os_cpu_register *cpu_desc;
struct ihk_ikc_channel_desc *resp_channel = cpu_local_var(ikc2linux);
int rc;
struct thread *thread;
@ -839,12 +840,17 @@ out_remote_pf:
break;
case SCD_MSG_CPU_RW_REG:
pp = ihk_mc_map_memory(NULL, packet->pdesc,
sizeof(struct ihk_os_cpu_register));
cpu_desc = (struct ihk_os_cpu_register *)ihk_mc_map_virtual(
pp, 1, PTATTR_WRITABLE | PTATTR_ACTIVE);
pckt.msg = SCD_MSG_CPU_RW_REG_RESP;
memcpy(&pckt.desc, &packet->desc,
sizeof(struct ihk_os_cpu_register));
pckt.resp = packet->resp;
pckt.err = arch_cpu_read_write_register(&pckt.desc, packet->op);
pckt.reply = packet->reply;
pckt.err = arch_cpu_read_write_register(cpu_desc, packet->op);
ihk_mc_unmap_virtual(cpu_desc, 1);
ihk_mc_unmap_memory(NULL, pp, sizeof(struct ihk_os_cpu_register));
ihk_ikc_send(resp_channel, &pckt, 0);
break;

2
kernel/include/syscall.h
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@ -287,7 +287,7 @@ struct ikc_scd_packet {
/* SCD_MSG_CPU_RW_REG */
struct {
struct ihk_os_cpu_register desc;
unsigned long pdesc; /* Physical addr of the descriptor */
enum mcctrl_os_cpu_operation op;
void *resp;
};