# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1196940184 0
# Node ID 1936e6a79f850b91d2c4336df3405c20066e9a7f
# Parent 90f02ca762448d7af4106b1552ded64cbea5919a
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/arch/x86/Makefile | 1
xen/arch/x86/ioport_emulate.c | 125 ++++++++++++++++++++++++++++++++++++++++++
xen/arch/x86/traps.c | 7 ++
3 files changed, 132 insertions(+), 1 deletion(-)
diff -r 90f02ca76244 -r 1936e6a79f85 xen/arch/x86/Makefile
--- a/xen/arch/x86/Makefile Thu Dec 06 10:41:10 2007 +0000
+++ b/xen/arch/x86/Makefile Thu Dec 06 11:23:04 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 90f02ca76244 -r 1936e6a79f85 xen/arch/x86/ioport_emulate.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xen/arch/x86/ioport_emulate.c Thu Dec 06 11:23:04 2007 +0000
@@ -0,0 +1,125 @@
+/******************************************************************************
+ * 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;
+
+ /* pushfw */
+ io_emul_stub[ 0] = 0x66;
+ io_emul_stub[ 1] = 0x9c;
+ /* cli */
+ io_emul_stub[ 2] = 0xfa;
+ /* out %al,%dx */
+ io_emul_stub[ 3] = 0xee;
+ /* 1: in %dx,%al */
+ io_emul_stub[ 4] = 0xec;
+ /* test $0x80,%al */
+ io_emul_stub[ 5] = 0xa8;
+ io_emul_stub[ 6] = 0x80;
+ /* jnz 1b */
+ io_emul_stub[ 7] = 0x75;
+ io_emul_stub[ 8] = 0xfb;
+ /* popfw */
+ io_emul_stub[ 9] = 0x66;
+ io_emul_stub[10] = 0x9d;
+ /* ret */
+ io_emul_stub[11] = 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 90f02ca76244 -r 1936e6a79f85 xen/arch/x86/traps.c
--- a/xen/arch/x86/traps.c Thu Dec 06 10:41:10 2007 +0000
+++ b/xen/arch/x86/traps.c Thu Dec 06 11:23:04 2007 +0000
@@ -110,6 +110,8 @@ 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);
@@ -1379,7 +1381,7 @@ 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;
@@ -1635,6 +1637,9 @@ 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 )
_______________________________________________
Xen-changelog mailing list
Xen-changelog@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-changelog
|
Home