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authorBjorn Helgaas <bjorn.helgaas@hp.com>2006-03-26 01:37:08 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-26 08:56:54 -0800
commitb2c99e3c70d77fb194df5aa1642030080d28ea48 (patch)
tree65f2a173e49b3e15e90b8cabf45b7dd4f3691e29 /drivers/firmware/pcdp.c
parent27d8e3d15bcf9d7cd99bf6ca910ea9e34328c7fb (diff)
[PATCH] EFI: keep physical table addresses in efi structure
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>
Diffstat (limited to 'drivers/firmware/pcdp.c')
-rw-r--r--drivers/firmware/pcdp.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/firmware/pcdp.c b/drivers/firmware/pcdp.c
index ae1fb45dbb40..c37baf9448bc 100644
--- a/drivers/firmware/pcdp.c
+++ b/drivers/firmware/pcdp.c
@@ -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;
}

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