Re: [Xen-devel] [PATCH v4 07/16] libxl/arm: Construct ACPI GTDT table

[Shannon Zhao <zhaoshenglong@xxxxxxxxxx>]

On 2016/8/30 2:16, Julien Grall wrote:
> On 16/08/2016 06:25, Shannon Zhao wrote:
>> From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
>>
>> Construct GTDT table with the interrupt information of timers.
>>
>> Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
>> ---
>>  tools/libxl/libxl_arm_acpi.c | 29 +++++++++++++++++++++++++++++
>>  1 file changed, 29 insertions(+)
>>
>> diff --git a/tools/libxl/libxl_arm_acpi.c b/tools/libxl/libxl_arm_acpi.c
>> index 8cd1d9b..28fb6fe 100644
>> --- a/tools/libxl/libxl_arm_acpi.c
>> +++ b/tools/libxl/libxl_arm_acpi.c
>> @@ -24,10 +24,18 @@ typedef uint8_t u8;
>>  typedef uint16_t u16;
>>  typedef uint32_t u32;
>>  typedef uint64_t u64;
>> +typedef int64_t s64;
>>
>>  #include <acpi/acconfig.h>
>>  #include <acpi/actbl.h>
>>
>> +#include <asm-generic/bitsperlong.h>
>> +#define ACPI_MACHINE_WIDTH __BITS_PER_LONG
>> +#define COMPILER_DEPENDENT_INT64 int64_t
>> +#define COMPILER_DEPENDENT_UINT64 uint64_t
>> +
>> +#include <acpi/actypes.h>
>> +
>>  _hidden
>>  extern const unsigned char dsdt_anycpu_arm[];
>>  _hidden
>> @@ -175,6 +183,26 @@ static void make_acpi_xsdt(libxl__gc *gc, struct
>> xc_dom_image *dom,
>>                         acpitables[XSDT].size);
>>  }
>>
>> +static void make_acpi_gtdt(libxl__gc *gc, struct xc_dom_image *dom,
>> +                           struct acpitable acpitables[])
>> +{
>> +    uint64_t offset = acpitables[GTDT].addr - GUEST_ACPI_BASE;
>> +    struct acpi_table_gtdt *gtdt = (void *)dom->acpi_modules[0].data
>> + offset;
>> +
>> +    gtdt->non_secure_el1_interrupt = GUEST_TIMER_PHYS_NS_PPI;
>> +    gtdt->non_secure_el1_flags =
>> +                             (ACPI_LEVEL_SENSITIVE <<
>> ACPI_GTDT_INTERRUPT_MODE)
>> +                             |(ACPI_ACTIVE_LOW <<
>> ACPI_GTDT_INTERRUPT_POLARITY);
>> +    gtdt->virtual_timer_interrupt = GUEST_TIMER_VIRT_PPI;
>> +    gtdt->virtual_timer_flags =
>> +                             (ACPI_LEVEL_SENSITIVE <<
>> ACPI_GTDT_INTERRUPT_MODE)
>> +                             |(ACPI_ACTIVE_LOW <<
>> ACPI_GTDT_INTERRUPT_POLARITY);
>> +
> 
> I don't see any setting for the field counter_block_address. From the
> ACPI spec, the field should be 0xFFFFFFFFFFFFFFFF when the counter
> control block is not available
Oops, will add. Thanks.

-- 
Shannon


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