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/******************************************************************************
* 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>
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;
}
static 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 DL7xx",
.matches = {
DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant DL7"),
},
},
{
.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 BL2xx",
.matches = {
DMI_MATCH(DMI_BIOS_VENDOR, "HP"),
DMI_MATCH(DMI_PRODUCT_NAME, "ProLiant BL2"),
},
},
{
.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"),
},
},
{ }
};
static int __init ioport_quirks_init(void)
{
dmi_check_system(ioport_quirks_tbl);
return 0;
}
__initcall(ioport_quirks_init);
/*
* Local variables:
* mode: C
* c-file-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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