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[PATCH] EFI: keep physical table addresses in efi structure

Browse source 
Almost all users of the table addresses from the EFI system table want
physical addresses.  So rather than doing the pa->va->pa conversion, just keep
physical addresses in struct efi.

This fixes a DMI bug: the efi structure contained the physical SMBIOS address
on x86 but the virtual address on ia64, so dmi_scan_machine() used ioremap()
on a virtual address on ia64.

This is essentially the same as an earlier patch by Matt Tolentino:
	http://marc.theaimsgroup.com/?l=linux-kernel&m=112130292316281&w=2
except that this changes all table addresses, not just ACPI addresses.

Matt's original patch was backed out because it caused MCAs on HP sx1000
systems.  That problem is resolved by the ioremap() attribute checking added
for ia64.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Matt Domsch <Matt_Domsch@dell.com>
Cc: "Tolentino, Matthew E" <matthew.e.tolentino@intel.com>
Cc: "Brown, Len" <len.brown@intel.com>
Cc: Andi Kleen <ak@muc.de>
Acked-by: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Bjorn Helgaas 2006-03-26 01:37:08 -08:00 committed by Linus Torvalds
parent 27d8e3d15b
commit b2c99e3c70
12 changed files with 84 additions and 60 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
arch/i386/kernel/acpi/boot.c
View file

@ -668,10 +668,10 @@ unsigned long __init acpi_find_rsdp(void)
unsigned long rsdp_phys = 0;
if (efi_enabled) {
if (efi.acpi20)
return __pa(efi.acpi20);
else if (efi.acpi)
return __pa(efi.acpi);
if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
return efi.acpi20;
else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
return efi.acpi;
}
/*
* Scan memory looking for the RSDP signature. First search EBDA (low

4
arch/i386/kernel/dmi_scan.c
View file

@ -217,14 +217,14 @@ void __init dmi_scan_machine(void)
int rc;
if (efi_enabled) {
if (!efi.smbios)
if (efi.smbios == EFI_INVALID_TABLE_ADDR)
goto out;
/* This is called as a core_initcall() because it isn't
* needed during early boot. This also means we can
* iounmap the space when we're done with it.
*/
p = dmi_ioremap((unsigned long)efi.smbios, 32);
p = dmi_ioremap(efi.smbios, 32);
if (p == NULL)
goto out;

21
arch/i386/kernel/efi.c
View file

@ -381,29 +381,38 @@ void __init efi_init(void)
if (config_tables == NULL)
printk(KERN_ERR PFX "Could not map EFI Configuration Table!\n");
efi.mps = EFI_INVALID_TABLE_ADDR;
efi.acpi = EFI_INVALID_TABLE_ADDR;
efi.acpi20 = EFI_INVALID_TABLE_ADDR;
efi.smbios = EFI_INVALID_TABLE_ADDR;
efi.sal_systab = EFI_INVALID_TABLE_ADDR;
efi.boot_info = EFI_INVALID_TABLE_ADDR;
efi.hcdp = EFI_INVALID_TABLE_ADDR;
efi.uga = EFI_INVALID_TABLE_ADDR;
for (i = 0; i < num_config_tables; i++) {
if (efi_guidcmp(config_tables[i].guid, MPS_TABLE_GUID) == 0) {
efi.mps = (void *)config_tables[i].table;
efi.mps = config_tables[i].table;
printk(KERN_INFO " MPS=0x%lx ", config_tables[i].table);
} else
if (efi_guidcmp(config_tables[i].guid, ACPI_20_TABLE_GUID) == 0) {
efi.acpi20 = __va(config_tables[i].table);
efi.acpi20 = config_tables[i].table;
printk(KERN_INFO " ACPI 2.0=0x%lx ", config_tables[i].table);
} else
if (efi_guidcmp(config_tables[i].guid, ACPI_TABLE_GUID) == 0) {
efi.acpi = __va(config_tables[i].table);
efi.acpi = config_tables[i].table;
printk(KERN_INFO " ACPI=0x%lx ", config_tables[i].table);
} else
if (efi_guidcmp(config_tables[i].guid, SMBIOS_TABLE_GUID) == 0) {
efi.smbios = (void *) config_tables[i].table;
efi.smbios = config_tables[i].table;
printk(KERN_INFO " SMBIOS=0x%lx ", config_tables[i].table);
} else
if (efi_guidcmp(config_tables[i].guid, HCDP_TABLE_GUID) == 0) {
efi.hcdp = (void *)config_tables[i].table;
efi.hcdp = config_tables[i].table;
printk(KERN_INFO " HCDP=0x%lx ", config_tables[i].table);
} else
if (efi_guidcmp(config_tables[i].guid, UGA_IO_PROTOCOL_GUID) == 0) {
efi.uga = (void *)config_tables[i].table;
efi.uga = config_tables[i].table;
printk(KERN_INFO " UGA=0x%lx ", config_tables[i].table);
}
}

6
arch/ia64/kernel/acpi.c
View file

@ -651,9 +651,9 @@ unsigned long __init acpi_find_rsdp(void)
{
unsigned long rsdp_phys = 0;
if (efi.acpi20)
rsdp_phys = __pa(efi.acpi20);
else if (efi.acpi)
if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
rsdp_phys = efi.acpi20;
else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
printk(KERN_WARNING PREFIX
"v1.0/r0.71 tables no longer supported\n");
return rsdp_phys;

21
arch/ia64/kernel/efi.c
View file

@ -458,24 +458,33 @@ efi_init (void)
printk(KERN_INFO "EFI v%u.%.02u by %s:",
efi.systab->hdr.revision >> 16, efi.systab->hdr.revision & 0xffff, vendor);
efi.mps = EFI_INVALID_TABLE_ADDR;
efi.acpi = EFI_INVALID_TABLE_ADDR;
efi.acpi20 = EFI_INVALID_TABLE_ADDR;
efi.smbios = EFI_INVALID_TABLE_ADDR;
efi.sal_systab = EFI_INVALID_TABLE_ADDR;
efi.boot_info = EFI_INVALID_TABLE_ADDR;
efi.hcdp = EFI_INVALID_TABLE_ADDR;
efi.uga = EFI_INVALID_TABLE_ADDR;
for (i = 0; i < (int) efi.systab->nr_tables; i++) {
if (efi_guidcmp(config_tables[i].guid, MPS_TABLE_GUID) == 0) {
efi.mps = __va(config_tables[i].table);
efi.mps = config_tables[i].table;
printk(" MPS=0x%lx", config_tables[i].table);
} else if (efi_guidcmp(config_tables[i].guid, ACPI_20_TABLE_GUID) == 0) {
efi.acpi20 = __va(config_tables[i].table);
efi.acpi20 = config_tables[i].table;
printk(" ACPI 2.0=0x%lx", config_tables[i].table);
} else if (efi_guidcmp(config_tables[i].guid, ACPI_TABLE_GUID) == 0) {
efi.acpi = __va(config_tables[i].table);
efi.acpi = config_tables[i].table;
printk(" ACPI=0x%lx", config_tables[i].table);
} else if (efi_guidcmp(config_tables[i].guid, SMBIOS_TABLE_GUID) == 0) {
efi.smbios = __va(config_tables[i].table);
efi.smbios = config_tables[i].table;
printk(" SMBIOS=0x%lx", config_tables[i].table);
} else if (efi_guidcmp(config_tables[i].guid, SAL_SYSTEM_TABLE_GUID) == 0) {
efi.sal_systab = __va(config_tables[i].table);
efi.sal_systab = config_tables[i].table;
printk(" SALsystab=0x%lx", config_tables[i].table);
} else if (efi_guidcmp(config_tables[i].guid, HCDP_TABLE_GUID) == 0) {
efi.hcdp = __va(config_tables[i].table);
efi.hcdp = config_tables[i].table;
printk(" HCDP=0x%lx", config_tables[i].table);
}
}

2
arch/ia64/kernel/setup.c
View file

@ -434,7 +434,7 @@ setup_arch (char **cmdline_p)
find_memory();
/* process SAL system table: */
ia64_sal_init(efi.sal_systab);
ia64_sal_init(__va(efi.sal_systab));
ia64_setup_printk_clock();

5
arch/ia64/sn/kernel/setup.c
View file

@ -327,10 +327,11 @@ sn_scan_pcdp(void)
struct pcdp_interface_pci if_pci;
extern struct efi efi;
pcdp = efi.hcdp;
if (! pcdp)
if (efi.hcdp == EFI_INVALID_TABLE_ADDR)
return; /* no hcdp/pcdp table */
pcdp = __va(efi.hcdp);
if (pcdp->rev < 3)
return; /* only support PCDP (rev >= 3) */

10
drivers/acpi/osl.c
View file

@ -156,12 +156,10 @@ acpi_status acpi_os_get_root_pointer(u32 flags, struct acpi_pointer *addr)
{
if (efi_enabled) {
addr->pointer_type = ACPI_PHYSICAL_POINTER;
if (efi.acpi20)
addr->pointer.physical =
(acpi_physical_address) virt_to_phys(efi.acpi20);
else if (efi.acpi)
addr->pointer.physical =
(acpi_physical_address) virt_to_phys(efi.acpi);
if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
addr->pointer.physical = efi.acpi20;
else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
addr->pointer.physical = efi.acpi;
else {
printk(KERN_ERR PREFIX
"System description tables not found\n");

28
drivers/firmware/efivars.c
View file

@ -568,20 +568,20 @@ systab_read(struct subsystem *entry, char *buf)
if (!entry || !buf)
return -EINVAL;
if (efi.mps)
str += sprintf(str, "MPS=0x%lx\n", __pa(efi.mps));
if (efi.acpi20)
str += sprintf(str, "ACPI20=0x%lx\n", __pa(efi.acpi20));
if (efi.acpi)
str += sprintf(str, "ACPI=0x%lx\n", __pa(efi.acpi));
if (efi.smbios)
str += sprintf(str, "SMBIOS=0x%lx\n", __pa(efi.smbios));
if (efi.hcdp)
str += sprintf(str, "HCDP=0x%lx\n", __pa(efi.hcdp));
if (efi.boot_info)
str += sprintf(str, "BOOTINFO=0x%lx\n", __pa(efi.boot_info));
if (efi.uga)
str += sprintf(str, "UGA=0x%lx\n", __pa(efi.uga));
if (efi.mps != EFI_INVALID_TABLE_ADDR)
str += sprintf(str, "MPS=0x%lx\n", efi.mps);
if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
str += sprintf(str, "ACPI20=0x%lx\n", efi.acpi20);
if (efi.acpi != EFI_INVALID_TABLE_ADDR)
str += sprintf(str, "ACPI=0x%lx\n", efi.acpi);
if (efi.smbios != EFI_INVALID_TABLE_ADDR)
str += sprintf(str, "SMBIOS=0x%lx\n", efi.smbios);
if (efi.hcdp != EFI_INVALID_TABLE_ADDR)
str += sprintf(str, "HCDP=0x%lx\n", efi.hcdp);
if (efi.boot_info != EFI_INVALID_TABLE_ADDR)
str += sprintf(str, "BOOTINFO=0x%lx\n", efi.boot_info);
if (efi.uga != EFI_INVALID_TABLE_ADDR)
str += sprintf(str, "UGA=0x%lx\n", efi.uga);
return str - buf;
}

19
drivers/firmware/pcdp.c
View file

@ -89,19 +89,20 @@ efi_setup_pcdp_console(char *cmdline)
struct pcdp_uart *uart;
struct pcdp_device *dev, *end;
int i, serial = 0;
int rc = -ENODEV;
pcdp = efi.hcdp;
if (!pcdp)
if (efi.hcdp == EFI_INVALID_TABLE_ADDR)
return -ENODEV;
printk(KERN_INFO "PCDP: v%d at 0x%lx\n", pcdp->rev, __pa(pcdp));
pcdp = ioremap(efi.hcdp, 4096);
printk(KERN_INFO "PCDP: v%d at 0x%lx\n", pcdp->rev, efi.hcdp);
if (strstr(cmdline, "console=hcdp")) {
if (pcdp->rev < 3)
serial = 1;
} else if (strstr(cmdline, "console=")) {
printk(KERN_INFO "Explicit \"console=\"; ignoring PCDP\n");
return -ENODEV;
goto out;
}
if (pcdp->rev < 3 && efi_uart_console_only())
@ -110,7 +111,8 @@ efi_setup_pcdp_console(char *cmdline)
for (i = 0, uart = pcdp->uart; i < pcdp->num_uarts; i++, uart++) {
if (uart->flags & PCDP_UART_PRIMARY_CONSOLE || serial) {
if (uart->type == PCDP_CONSOLE_UART) {
return setup_serial_console(uart);
rc = setup_serial_console(uart);
goto out;
}
}
}
@ -121,10 +123,13 @@ efi_setup_pcdp_console(char *cmdline)
dev = (struct pcdp_device *) ((u8 *) dev + dev->length)) {
if (dev->flags & PCDP_PRIMARY_CONSOLE) {
if (dev->type == PCDP_CONSOLE_VGA) {
return setup_vga_console(dev);
rc = setup_vga_console(dev);
goto out;
}
}
}
return -ENODEV;
out:
iounmap(pcdp);
return rc;
}

2
include/asm-ia64/sn/sn_sal.h
View file

@ -159,7 +159,7 @@
static inline u32
sn_sal_rev(void)
{
struct ia64_sal_systab *systab = efi.sal_systab;
struct ia64_sal_systab *systab = __va(efi.sal_systab);
return (u32)(systab->sal_b_rev_major << 8 | systab->sal_b_rev_minor);
}

18
include/linux/efi.h
View file

@ -240,19 +240,21 @@ struct efi_memory_map {
unsigned long desc_size;
};
#define EFI_INVALID_TABLE_ADDR (~0UL)
/*
* All runtime access to EFI goes through this structure:
*/
extern struct efi {
efi_system_table_t *systab; /* EFI system table */
void *mps; /* MPS table */
void *acpi; /* ACPI table (IA64 ext 0.71) */
void *acpi20; /* ACPI table (ACPI 2.0) */
void *smbios; /* SM BIOS table */
void *sal_systab; /* SAL system table */
void *boot_info; /* boot info table */
void *hcdp; /* HCDP table */
void *uga; /* UGA table */
unsigned long mps; /* MPS table */
unsigned long acpi; /* ACPI table (IA64 ext 0.71) */
unsigned long acpi20; /* ACPI table (ACPI 2.0) */
unsigned long smbios; /* SM BIOS table */
unsigned long sal_systab; /* SAL system table */
unsigned long boot_info; /* boot info table */
unsigned long hcdp; /* HCDP table */
unsigned long uga; /* UGA table */
efi_get_time_t *get_time;
efi_set_time_t *set_time;
efi_get_wakeup_time_t *get_wakeup_time;