# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1197133676 0
# Node ID 0069a86da1040fd6ebba5734f28f8dee56cc5eaf
# Parent 4e16701e94b1516d451b688ffd78202bc002ed15
x86: Fix management support on HP ProLiant systems.
Adds support to allow host-platform-specific handling of I/O port
traps. Specifically adds support to handle an HP ProLiant I/O port in
a special way.
Signed-off-by: Mike Garrett <michael.garrett@xxxxxx>
Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
xen-unstable changeset: 16542:1936e6a79f85
xen-unstable date: Thu Dec 06 11:23:04 2007 +0000
x86: Change proliant io emulation stub to use pushf/popf instead of
pushfw/popfw.
Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
xen-unstable changeset: 16562:35890b260971
xen-unstable date: Fri Dec 07 17:05:15 2007 +0000
---
xen/arch/x86/Makefile | 1
xen/arch/x86/ioport_emulate.c | 123 ++++++++++++++++++++++++++++++++++++++++++
xen/arch/x86/traps.c | 7 ++
3 files changed, 130 insertions(+), 1 deletion(-)
diff -r 4e16701e94b1 -r 0069a86da104 xen/arch/x86/Makefile
--- a/xen/arch/x86/Makefile Fri Dec 07 12:45:57 2007 +0000
+++ b/xen/arch/x86/Makefile Sat Dec 08 17:07:56 2007 +0000
@@ -24,6 +24,7 @@ obj-y += i387.o
obj-y += i387.o
obj-y += i8259.o
obj-y += io_apic.o
+obj-y += ioport_emulate.o
obj-y += irq.o
obj-y += microcode.o
obj-y += mm.o
diff -r 4e16701e94b1 -r 0069a86da104 xen/arch/x86/ioport_emulate.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/arch/x86/ioport_emulate.c Sat Dec 08 17:07:56 2007 +0000
@@ -0,0 +1,123 @@
+/******************************************************************************
+ * ioport_emulate.c
+ *
+ * Handle I/O port access quirks of various platforms.
+ */
+
+#include <xen/config.h>
+#include <xen/init.h>
+#include <xen/sched.h>
+#include <xen/dmi.h>
+
+/* Function pointer used to handle platform specific I/O port emulation. */
+extern void (*ioemul_handle_quirk)(
+ u8 opcode, char *io_emul_stub, struct cpu_user_regs *regs);
+
+static void ioemul_handle_proliant_quirk(
+ u8 opcode, char *io_emul_stub, struct cpu_user_regs *regs)
+{
+ uint16_t port = regs->edx;
+ uint8_t value = regs->eax;
+
+ if ( (opcode != 0xee) || (port != 0xcd4) || !(value & 0x80) )
+ return;
+
+ /* pushf */
+ io_emul_stub[0] = 0x9c;
+ /* cli */
+ io_emul_stub[1] = 0xfa;
+ /* out %al,%dx */
+ io_emul_stub[2] = 0xee;
+ /* 1: in %dx,%al */
+ io_emul_stub[3] = 0xec;
+ /* test $0x80,%al */
+ io_emul_stub[4] = 0xa8;
+ io_emul_stub[5] = 0x80;
+ /* jnz 1b */
+ io_emul_stub[6] = 0x75;
+ io_emul_stub[7] = 0xfb;
+ /* popf */
+ io_emul_stub[8] = 0x9d;
+ /* ret */
+ io_emul_stub[9] = 0xc3;
+}
+
+int __init proliant_quirk(struct dmi_system_id *d)
+{
+ ioemul_handle_quirk = ioemul_handle_proliant_quirk;
+ return 0;
+}
+
+/* This table is the set of system-specific I/O emulation hooks. */
+static struct dmi_system_id __initdata ioport_quirks_tbl[] = {
+ /*
+ * I/O emulation hook for certain HP ProLiant servers with
+ * 'special' SMM goodness.
+ */
+ {
+ .callback = proliant_quirk,
+ .ident = "HP ProLiant DL3xx",
+ .matches = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL3"),
+ },
+ },
+ {
+ .callback = proliant_quirk,
+ .ident = "HP ProLiant DL5xx",
+ .matches = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL5"),
+ },
+ },
+ {
+ .callback = proliant_quirk,
+ .ident = "HP ProLiant ML3xx",
+ .matches = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant ML3"),
+ },
+ },
+ {
+ .callback = proliant_quirk,
+ .ident = "HP ProLiant ML5xx",
+ .matches = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant ML5"),
+ },
+ },
+ {
+ .callback = proliant_quirk,
+ .ident = "HP ProLiant BL4xx",
+ .matches = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL4"),
+ },
+ },
+ {
+ .callback = proliant_quirk,
+ .ident = "HP ProLiant BL6xx",
+ .matches = {
+ DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL6"),
+ },
+ },
+ { }
+};
+
+int __init ioport_quirks_init(void)
+{
+ dmi_check_system(ioport_quirks_tbl);
+ return 0;
+}
+__initcall(ioport_quirks_init);
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff -r 4e16701e94b1 -r 0069a86da104 xen/arch/x86/traps.c
--- a/xen/arch/x86/traps.c Fri Dec 07 12:45:57 2007 +0000
+++ b/xen/arch/x86/traps.c Sat Dec 08 17:07:56 2007 +0000
@@ -107,6 +107,8 @@ DECLARE_TRAP_HANDLER(spurious_interrupt_
long do_set_debugreg(int reg, unsigned long value);
unsigned long do_get_debugreg(int reg);
+void (*ioemul_handle_quirk)(
+ u8 opcode, char *io_emul_stub, struct cpu_user_regs *regs);
static int debug_stack_lines = 20;
integer_param("debug_stack_lines", debug_stack_lines);
@@ -1217,7 +1219,7 @@ static int emulate_privileged_op(struct
? (*(u32 *)®s->reg = (val)) \
: (*(u16 *)®s->reg = (val)))
unsigned long code_base, code_limit;
- char io_emul_stub[16];
+ char io_emul_stub[32];
void (*io_emul)(struct cpu_user_regs *) __attribute__((__regparm__(1)));
u32 l, h, eax, edx;
@@ -1468,6 +1470,9 @@ static int emulate_privileged_op(struct
/* Handy function-typed pointer to the stub. */
io_emul = (void *)io_emul_stub;
+ if ( ioemul_handle_quirk )
+ ioemul_handle_quirk(opcode, &io_emul_stub[12], regs);
+
/* I/O Port and Interrupt Flag instructions. */
switch ( opcode )
{
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