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HV: Minor refinement about RTVM pm MACRO and comments 

This patch mainly does the following:
  - Replace prefix RT_VM_ with VIRTUAL_.
  - Remove the check of "addr != RT_VM_PM1A_CNT_ADDR" as the handler is specific for this addr.
  - Add comments about the meaning of return value.

Tracked-On: #2865
Signed-off-by: Kaige Fu <kaige.fu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Kaige Fu 2019-04-01 17:00:24 +00:00 committed by wenlingz
parent 9c5e16987a
commit 336ed72250
3 changed files with 24 additions and 20 deletions
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12
hypervisor/arch/x86/guest/pm.c
View File

@ -222,12 +222,16 @@ static bool rt_vm_pm1a_io_read(__unused struct acrn_vm *vm, __unused struct acrn
return false;
}
/*
* retval true means that we complete the emulation in HV and no need to re-inject the request to DM.
* retval false means that we should re-inject the request to DM.
*/
static bool rt_vm_pm1a_io_write(struct acrn_vm *vm, uint16_t addr, size_t width, uint32_t v)
{
if ((addr != RT_VM_PM1A_CNT_ADDR) || (width != 2U)) {
if (width != 2U) {
pr_dbg("Invalid address (0x%x) or width (0x%x)", addr, width);
} else {
if (((v & RT_VM_PM1A_SLP_EN) && (((v & RT_VM_PM1A_SLP_TYP) >> 10U) == 5U)) != 0U) {
if (((v & VIRTUAL_PM1A_SLP_EN) && (((v & VIRTUAL_PM1A_SLP_TYP) >> 10U) == 5U)) != 0U) {
vm->state = VM_POWERING_OFF;
}
}
@ -240,9 +244,9 @@ void register_rt_vm_pm1a_ctl_handler(struct acrn_vm *vm)
struct vm_io_range io_range;
io_range.flags = IO_ATTR_RW;
io_range.base = RT_VM_PM1A_CNT_ADDR;
io_range.base = VIRTUAL_PM1A_CNT_ADDR;
io_range.len = 1U;
register_pio_emulation_handler(vm, RT_VM_PM1A_CNT_PIO_IDX, &io_range,
register_pio_emulation_handler(vm, VIRTUAL_PM1A_CNT_PIO_IDX, &io_range,
&rt_vm_pm1a_io_read, &rt_vm_pm1a_io_write);
}

4
hypervisor/include/arch/x86/guest/io_emul.h
View File

@ -21,8 +21,8 @@
#define PM1B_EVT_PIO_IDX (PM1A_CNT_PIO_IDX + 1U)
#define PM1B_CNT_PIO_IDX (PM1B_EVT_PIO_IDX + 1U)
#define RTC_PIO_IDX (PM1B_CNT_PIO_IDX + 1U)
#define RT_VM_PM1A_CNT_PIO_IDX (RTC_PIO_IDX + 1U)
#define EMUL_PIO_IDX_MAX (RT_VM_PM1A_CNT_PIO_IDX + 1U)
#define VIRTUAL_PM1A_CNT_PIO_IDX (RTC_PIO_IDX + 1U)
#define EMUL_PIO_IDX_MAX (VIRTUAL_PM1A_CNT_PIO_IDX + 1U)
/**
* @brief The handler of VM exits on I/O instructions

6
hypervisor/include/public/acrn_common.h
View File

@ -55,9 +55,9 @@
#define GUEST_FLAG_RT (1UL << 5U) /* Whether the vm is RT-VM */
/* TODO: We may need to get this addr from guest ACPI instead of hardcode here */
#define RT_VM_PM1A_CNT_ADDR 0x404U
#define RT_VM_PM1A_SLP_TYP 0x1c00U
#define RT_VM_PM1A_SLP_EN 0x2000U
#define VIRTUAL_PM1A_CNT_ADDR 0x404U
#define VIRTUAL_PM1A_SLP_TYP 0x1c00U
#define VIRTUAL_PM1A_SLP_EN 0x2000U
/**
* @brief Hypercall