[PATCH 04/15] xen dom0: Add support for the platform_ops hypercall

From: Jeremy Fitzhardinge
Date: Fri Mar 13 2009 - 12:34:16 EST

From: Stephen Tweedie <sct@xxxxxxxxxx>

Minimal changes to get platform ops (renamed dom0_ops on pv_ops) working
on pv_ops builds. Pulls in upstream linux-2.6.18-xen.hg's platform.h

Signed-off-by: Stephen Tweedie <sct@xxxxxxxxxx>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
---
arch/x86/include/asm/xen/hypercall.h | 8 ++
include/xen/interface/platform.h | 232 ++++++++++++++++++++++++++++++++++
include/xen/interface/xen.h | 2 +
3 files changed, 242 insertions(+), 0 deletions(-)
create mode 100644 include/xen/interface/platform.h

diff --git a/arch/x86/include/asm/xen/hypercall.h b/arch/x86/include/asm/xen/hypercall.h
index 5e79ca6..2200a72 100644
--- a/arch/x86/include/asm/xen/hypercall.h
+++ b/arch/x86/include/asm/xen/hypercall.h
@@ -45,6 +45,7 @@
#include <xen/interface/xen.h>
#include <xen/interface/sched.h>
#include <xen/interface/physdev.h>
+#include <xen/interface/platform.h>

/*
* The hypercall asms have to meet several constraints:
@@ -282,6 +283,13 @@ HYPERVISOR_set_timer_op(u64 timeout)
}

static inline int
+HYPERVISOR_dom0_op(struct xen_platform_op *platform_op)
+{
+ platform_op->interface_version = XENPF_INTERFACE_VERSION;
+ return _hypercall1(int, dom0_op, platform_op);
+}
+
+static inline int
HYPERVISOR_set_debugreg(int reg, unsigned long value)
{
return _hypercall2(int, set_debugreg, reg, value);
diff --git a/include/xen/interface/platform.h b/include/xen/interface/platform.h
new file mode 100644
index 0000000..da548f3
--- /dev/null
+++ b/include/xen/interface/platform.h
@@ -0,0 +1,232 @@
+/******************************************************************************
+ * 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;
+};
+typedef struct xenpf_settime xenpf_settime_t;
+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;
+};
+typedef struct xenpf_add_memtype xenpf_add_memtype_t;
+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;
+};
+typedef struct xenpf_del_memtype xenpf_del_memtype_t;
+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;
+};
+typedef struct xenpf_read_memtype xenpf_read_memtype_t;
+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. */
+};
+typedef struct xenpf_microcode_update xenpf_microcode_update_t;
+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;
+};
+typedef struct xenpf_platform_quirk xenpf_platform_quirk_t;
+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;
+};
+typedef struct xenpf_firmware_info xenpf_firmware_info_t;
+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. */
+ uint32_t sleep_state; /* Which state to enter (Sn). */
+ uint32_t flags; /* Must be zero. */
+};
+typedef struct xenpf_enter_acpi_sleep xenpf_enter_acpi_sleep_t;
+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). */
+};
+typedef struct xenpf_change_freq xenpf_change_freq_t;
+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;
+};
+typedef struct xenpf_getidletime xenpf_getidletime_t;
+DEFINE_GUEST_HANDLE_STRUCT(xenpf_getidletime_t);
+
+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;
+ uint8_t pad[128];
+ } u;
+};
+typedef struct xen_platform_op xen_platform_op_t;
+DEFINE_GUEST_HANDLE_STRUCT(xen_platform_op_t);
+
+#endif /* __XEN_PUBLIC_PLATFORM_H__ */
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/include/xen/interface/xen.h b/include/xen/interface/xen.h
index 2befa3e..18b5599 100644
--- a/include/xen/interface/xen.h
+++ b/include/xen/interface/xen.h
@@ -461,6 +461,8 @@ typedef uint8_t xen_domain_handle_t[16];
#define __mk_unsigned_long(x) x ## UL
#define mk_unsigned_long(x) __mk_unsigned_long(x)

+DEFINE_GUEST_HANDLE(uint64_t);
+
#else /* __ASSEMBLY__ */

/* In assembly code we cannot use C numeric constant suffixes. */
--
1.6.0.6

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