> From: Konrad Rzeszutek Wilk [mailto:konrad.wilk@xxxxxxxxxx]
> Sent: Wednesday, August 31, 2011 11:31 AM
>
> From: Yu Ke <ke.yu@xxxxxxxxx>
>
> This patches implements the xen_platform_op hypercall, to pass the parsed
> ACPI info to hypervisor.
>
> Signed-off-by: Yu Ke <ke.yu@xxxxxxxxx>
> Signed-off-by: Tian Kevin <kevin.tian@xxxxxxxxx>
> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
> [v1: Added DEFINE_GUEST.. in appropiate headers]
> [v2: Ripped out typedefs]
> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
> ---
> arch/ia64/include/asm/xen/interface.h | 1 +
> arch/x86/include/asm/xen/interface.h | 1 +
> include/xen/interface/platform.h | 320
> +++++++++++++++++++++++++++++++++
> include/xen/interface/xen.h | 1 +
> 4 files changed, 323 insertions(+), 0 deletions(-) create mode 100644
> include/xen/interface/platform.h
>
> diff --git a/arch/ia64/include/asm/xen/interface.h
> b/arch/ia64/include/asm/xen/interface.h
> index e951e74..1d2427d 100644
> --- a/arch/ia64/include/asm/xen/interface.h
> +++ b/arch/ia64/include/asm/xen/interface.h
> @@ -76,6 +76,7 @@ DEFINE_GUEST_HANDLE(char); DEFINE_GUEST_HANDLE(int);
> DEFINE_GUEST_HANDLE(long); DEFINE_GUEST_HANDLE(void);
> +DEFINE_GUEST_HANDLE(uint64_t);
>
> typedef unsigned long xen_pfn_t;
> DEFINE_GUEST_HANDLE(xen_pfn_t);
> diff --git a/arch/x86/include/asm/xen/interface.h
> b/arch/x86/include/asm/xen/interface.h
> index 5d4922a..a1f2db5 100644
> --- a/arch/x86/include/asm/xen/interface.h
> +++ b/arch/x86/include/asm/xen/interface.h
> @@ -55,6 +55,7 @@ DEFINE_GUEST_HANDLE(char); DEFINE_GUEST_HANDLE(int);
> DEFINE_GUEST_HANDLE(long); DEFINE_GUEST_HANDLE(void);
> +DEFINE_GUEST_HANDLE(uint64_t);
> #endif
>
> #ifndef HYPERVISOR_VIRT_START
> diff --git a/include/xen/interface/platform.h
> b/include/xen/interface/platform.h
> new file mode 100644
> index 0000000..c168468
> --- /dev/null
> +++ b/include/xen/interface/platform.h
Why are you adding so many new hypercalls that aren't being used in this
patchset?
> @@ -0,0 +1,320 @@
> +/**********************************************************************
> +********
> + * platform.h
> + *
> + * Hardware platform operations. Intended for use by domain-0 kernel.
> + *
> + * Permission is hereby granted, free of charge, to any person
> +obtaining a copy
> + * of this software and associated documentation files (the
> +"Software"), to
> + * deal in the Software without restriction, including without
> +limitation the
> + * rights to use, copy, modify, merge, publish, distribute, sublicense,
> +and/or
> + * sell copies of the Software, and to permit persons to whom the
> +Software is
> + * furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be
> +included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> +EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> +MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
> +SHALL THE
> + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
> +OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> +ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
> + * DEALINGS IN THE SOFTWARE.
> + *
> + * Copyright (c) 2002-2006, K Fraser
> + */
> +
> +#ifndef __XEN_PUBLIC_PLATFORM_H__
> +#define __XEN_PUBLIC_PLATFORM_H__
> +
> +#include "xen.h"
> +
> +#define XENPF_INTERFACE_VERSION 0x03000001
> +
> +/*
> + * Set clock such that it would read <secs,nsecs> after 00:00:00 UTC,
> + * 1 January, 1970 if the current system time was <system_time>.
> + */
> +#define XENPF_settime 17
> +struct xenpf_settime {
> + /* IN variables. */
> + uint32_t secs;
> + uint32_t nsecs;
> + uint64_t system_time;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xenpf_settime_t);
> +
> +/*
> + * Request memory range (@mfn, @mfn+@nr_mfns-1) to have type @type.
> + * On x86, @type is an architecture-defined MTRR memory type.
> + * On success, returns the MTRR that was used (@reg) and a handle that
> +can
> + * be passed to XENPF_DEL_MEMTYPE to accurately tear down the new setting.
> + * (x86-specific).
> + */
> +#define XENPF_add_memtype 31
> +struct xenpf_add_memtype {
> + /* IN variables. */
> + unsigned long mfn;
> + uint64_t nr_mfns;
> + uint32_t type;
> + /* OUT variables. */
> + uint32_t handle;
> + uint32_t reg;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xenpf_add_memtype_t);
> +
> +/*
> + * Tear down an existing memory-range type. If @handle is remembered
> +then it
> + * should be passed in to accurately tear down the correct setting (in
> +case
> + * of overlapping memory regions with differing types). If it is not
> +known
> + * then @handle should be set to zero. In all cases @reg must be set.
> + * (x86-specific).
> + */
> +#define XENPF_del_memtype 32
> +struct xenpf_del_memtype {
> + /* IN variables. */
> + uint32_t handle;
> + uint32_t reg;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xenpf_del_memtype_t);
> +
> +/* Read current type of an MTRR (x86-specific). */
> +#define XENPF_read_memtype 33
> +struct xenpf_read_memtype {
> + /* IN variables. */
> + uint32_t reg;
> + /* OUT variables. */
> + unsigned long mfn;
> + uint64_t nr_mfns;
> + uint32_t type;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xenpf_read_memtype_t);
> +
> +#define XENPF_microcode_update 35
> +struct xenpf_microcode_update {
> + /* IN variables. */
> + GUEST_HANDLE(void) data; /* Pointer to microcode data */
> + uint32_t length; /* Length of microcode data. */
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xenpf_microcode_update_t);
> +
> +#define XENPF_platform_quirk 39
> +#define QUIRK_NOIRQBALANCING 1 /* Do not restrict IO-APIC RTE targets */
> +#define QUIRK_IOAPIC_BAD_REGSEL 2 /* IO-APIC REGSEL forgets its value */
> +#define QUIRK_IOAPIC_GOOD_REGSEL 3 /* IO-APIC REGSEL behaves properly */
> +struct xenpf_platform_quirk {
> + /* IN variables. */
> + uint32_t quirk_id;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xenpf_platform_quirk_t);
> +
> +#define XENPF_firmware_info 50
> +#define XEN_FW_DISK_INFO 1 /* from int 13 AH=08/41/48 */
> +#define XEN_FW_DISK_MBR_SIGNATURE 2 /* from MBR offset 0x1b8 */
> +#define XEN_FW_VBEDDC_INFO 3 /* from int 10 AX=4f15 */
> +struct xenpf_firmware_info {
> + /* IN variables. */
> + uint32_t type;
> + uint32_t index;
> + /* OUT variables. */
> + union {
> + struct {
> + /* Int13, Fn48: Check Extensions Present. */
> + uint8_t device; /* %dl: bios device
> number */
> + uint8_t version; /* %ah: major version
> */
> + uint16_t interface_support; /* %cx: support
> bitmap */
> + /* Int13, Fn08: Legacy Get Device Parameters. */
> + uint16_t legacy_max_cylinder; /* %cl[7:6]:%ch: max
> cyl # */
> + uint8_t legacy_max_head; /* %dh: max head #
> */
> + uint8_t legacy_sectors_per_track; /* %cl[5:0]: max
> sector # */
> + /* Int13, Fn41: Get Device Parameters (as filled into
> %ds:%esi). */
> + /* NB. First uint16_t of buffer must be set to buffer
> size. */
> + GUEST_HANDLE(void) edd_params;
> + } disk_info; /* XEN_FW_DISK_INFO */
> + struct {
> + uint8_t device; /* bios device number
> */
> + uint32_t mbr_signature; /* offset 0x1b8 in
> mbr */
> + } disk_mbr_signature; /* XEN_FW_DISK_MBR_SIGNATURE */
> + struct {
> + /* Int10, AX=4F15: Get EDID info. */
> + uint8_t capabilities;
> + uint8_t edid_transfer_time;
> + /* must refer to 128-byte buffer */
> + GUEST_HANDLE(uchar) edid;
> + } vbeddc_info; /* XEN_FW_VBEDDC_INFO */
> + } u;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xenpf_firmware_info_t);
> +
> +#define XENPF_enter_acpi_sleep 51
> +struct xenpf_enter_acpi_sleep {
> + /* IN variables */
> + uint16_t pm1a_cnt_val; /* PM1a control value. */
> + uint16_t pm1b_cnt_val; /* PM1b control value. */
These are uint32_t in native Linux--why truncate in the API and not at use?
> + uint32_t sleep_state; /* Which state to enter (Sn). */
> + uint32_t flags; /* Must be zero. */
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xenpf_enter_acpi_sleep_t);
> +
> +#define XENPF_change_freq 52
> +struct xenpf_change_freq {
> + /* IN variables */
> + uint32_t flags; /* Must be zero. */
> + uint32_t cpu; /* Physical cpu. */
> + uint64_t freq; /* New frequency (Hz). */ };
> +DEFINE_GUEST_HANDLE_STRUCT(xenpf_change_freq_t);
> +
> +/*
> + * Get idle times (nanoseconds since boot) for physical CPUs specified
> +in the
> + * @cpumap_bitmap with range [0..@cpumap_nr_cpus-1]. The @idletime
> +array is
> + * indexed by CPU number; only entries with the corresponding
> +@cpumap_bitmap
> + * bit set are written to. On return, @cpumap_bitmap is modified so
> +that any
> + * non-existent CPUs are cleared. Such CPUs have their @idletime array
> +entry
> + * cleared.
> + */
> +#define XENPF_getidletime 53
> +struct xenpf_getidletime {
> + /* IN/OUT variables */
> + /* IN: CPUs to interrogate; OUT: subset of IN which are present */
> + GUEST_HANDLE(uchar) cpumap_bitmap;
> + /* IN variables */
> + /* Size of cpumap bitmap. */
> + uint32_t cpumap_nr_cpus;
> + /* Must be indexable for every cpu in cpumap_bitmap. */
> + GUEST_HANDLE(uint64_t) idletime;
> + /* OUT variables */
> + /* System time when the idletime snapshots were taken. */
> + uint64_t now;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xenpf_getidletime_t);
> +
> +#define XENPF_set_processor_pminfo 54
> +
> +/* ability bits */
> +#define XEN_PROCESSOR_PM_CX 1
> +#define XEN_PROCESSOR_PM_PX 2
> +#define XEN_PROCESSOR_PM_TX 4
> +
> +/* cmd type */
> +#define XEN_PM_CX 0
> +#define XEN_PM_PX 1
> +#define XEN_PM_TX 2
> +
> +/* Px sub info type */
> +#define XEN_PX_PCT 1
> +#define XEN_PX_PSS 2
> +#define XEN_PX_PPC 4
> +#define XEN_PX_PSD 8
> +
> +struct xen_power_register {
> + uint32_t space_id;
> + uint32_t bit_width;
> + uint32_t bit_offset;
> + uint32_t access_size;
> + uint64_t address;
> +};
> +
> +struct xen_processor_csd {
> + uint32_t domain; /* domain number of one dependent group */
> + uint32_t coord_type; /* coordination type */
> + uint32_t num; /* number of processors in same domain */
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_processor_csd);
> +
> +struct xen_processor_cx {
> + struct xen_power_register reg; /* GAS for Cx trigger register */
> + uint8_t type; /* cstate value, c0: 0, c1: 1, ... */
> + uint32_t latency; /* worst latency (ms) to enter/exit this cstate */
> + uint32_t power; /* average power consumption(mW) */
> + uint32_t dpcnt; /* number of dependency entries */
> + GUEST_HANDLE(xen_processor_csd) dp; /* NULL if no dependency */ };
> +DEFINE_GUEST_HANDLE_STRUCT(xen_processor_cx);
> +
> +struct xen_processor_flags {
> + uint32_t bm_control:1;
> + uint32_t bm_check:1;
> + uint32_t has_cst:1;
> + uint32_t power_setup_done:1;
> + uint32_t bm_rld_set:1;
> +};
> +
> +struct xen_processor_power {
> + uint32_t count; /* number of C state entries in array below */
> + struct xen_processor_flags flags; /* global flags of this processor */
> + GUEST_HANDLE(xen_processor_cx) states; /* supported c states */ };
> +
> +struct xen_pct_register {
> + uint8_t descriptor;
> + uint16_t length;
> + uint8_t space_id;
> + uint8_t bit_width;
> + uint8_t bit_offset;
> + uint8_t reserved;
> + uint64_t address;
> +};
> +
> +struct xen_processor_px {
> + uint64_t core_frequency; /* megahertz */
> + uint64_t power; /* milliWatts */
> + uint64_t transition_latency; /* microseconds */
> + uint64_t bus_master_latency; /* microseconds */
> + uint64_t control; /* control value */
> + uint64_t status; /* success indicator */
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_processor_px);
> +
> +struct xen_psd_package {
> + uint64_t num_entries;
> + uint64_t revision;
> + uint64_t domain;
> + uint64_t coord_type;
> + uint64_t num_processors;
> +};
> +
> +struct xen_processor_performance {
> + uint32_t flags; /* flag for Px sub info type */
> + uint32_t platform_limit; /* Platform limitation on freq usage */
> + struct xen_pct_register control_register;
> + struct xen_pct_register status_register;
> + uint32_t state_count; /* total available performance states */
> + GUEST_HANDLE(xen_processor_px) states;
> + struct xen_psd_package domain_info;
> + uint32_t shared_type; /* coordination type of this processor */
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_processor_performance);
> +
> +struct xenpf_set_processor_pminfo {
> + /* IN variables */
> + uint32_t id; /* ACPI CPU ID */
> + uint32_t type; /* {XEN_PM_CX, XEN_PM_PX} */
> + union {
> + struct xen_processor_power power;/* Cx: _CST/_CSD */
> + struct xen_processor_performance perf; /* Px:
> _PPC/_PCT/_PSS/_PSD */
> + };
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xenpf_set_processor_pminfo);
> +
> +struct xen_platform_op {
> + uint32_t cmd;
> + uint32_t interface_version; /* XENPF_INTERFACE_VERSION */
> + union {
> + struct xenpf_settime settime;
> + struct xenpf_add_memtype add_memtype;
> + struct xenpf_del_memtype del_memtype;
> + struct xenpf_read_memtype read_memtype;
> + struct xenpf_microcode_update microcode;
> + struct xenpf_platform_quirk platform_quirk;
> + struct xenpf_firmware_info firmware_info;
> + struct xenpf_enter_acpi_sleep enter_acpi_sleep;
> + struct xenpf_change_freq change_freq;
> + struct xenpf_getidletime getidletime;
> + struct xenpf_set_processor_pminfo set_pminfo;
> + uint8_t pad[128];
> + } u;
> +};
> +DEFINE_GUEST_HANDLE_STRUCT(xen_platform_op_t);
> +
> +#endif /* __XEN_PUBLIC_PLATFORM_H__ */
> diff --git a/include/xen/interface/xen.h b/include/xen/interface/xen.h index
> 70213b4..d83cc08
> 100644
> --- a/include/xen/interface/xen.h
> +++ b/include/xen/interface/xen.h
> @@ -453,6 +453,7 @@ struct start_info {
> /* These flags are passed in the 'flags' field of start_info_t. */
> #define SIF_PRIVILEGED (1<<0) /* Is the domain privileged? */
> #define SIF_INITDOMAIN (1<<1) /* Is this the initial control domain? */
> +#define SIF_PM_MASK (0xFF<<8) /* reserve 1 byte for xen-pm options */
>
> typedef uint64_t cpumap_t;
>
> --
> 1.7.4.1
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