ibft: Update iBFT handling for v1.03 of the spec.
- Use struct acpi_table_ibft instead of struct ibft_table_header - Don't do reserve_ibft_region() on UEFI machines (section 1.4.3.1) - If ibft_addr isn't initialized when ibft_init() is called, check for ACPI-based tables. - Fix compiler error when CONFIG_ACPI is not defined. Signed-off-by: Konrad Rzeszutek Wilk <konrad@kernel.org> Signed-off-by: Peter Jones <pjones@redhat.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
This commit is contained in:
Peter Jones
Konrad Rzeszutek Wilk
parent
94b849aaf6
commit
4e639fdf0d
@ -1,5 +1,5 @@
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/*
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* Copyright 2007 Red Hat, Inc.
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* Copyright 2007-2010 Red Hat, Inc.
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* by Peter Jones <pjones@redhat.com>
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* Copyright 2008 IBM, Inc.
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* by Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
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@ -19,6 +19,9 @@
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*
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* Changelog:
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*
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* 06 Jan 2010 - Peter Jones <pjones@redhat.com>
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* New changelog entries are in the git log from now on. Not here.
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*
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* 14 Mar 2008 - Konrad Rzeszutek <ketuzsezr@darnok.org>
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* Updated comments and copyrights. (v0.4.9)
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*
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@ -78,9 +81,10 @@
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#include <linux/stat.h>
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#include <linux/string.h>
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#include <linux/types.h>
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#include <linux/acpi.h>
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#define IBFT_ISCSI_VERSION "0.4.9"
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#define IBFT_ISCSI_DATE "2008-Mar-14"
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#define IBFT_ISCSI_VERSION "0.5.0"
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#define IBFT_ISCSI_DATE "2010-Feb-25"
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MODULE_AUTHOR("Peter Jones <pjones@redhat.com> and \
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Konrad Rzeszutek <ketuzsezr@darnok.org>");
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@ -238,7 +242,7 @@ static const char *ibft_initiator_properties[] =
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*/
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struct ibft_kobject {
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struct ibft_table_header *header;
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struct acpi_table_ibft *header;
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union {
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struct ibft_initiator *initiator;
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struct ibft_nic *nic;
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@ -536,12 +540,13 @@ static int __init ibft_check_device(void)
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u8 *pos;
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u8 csum = 0;
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len = ibft_addr->length;
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len = ibft_addr->header.length;
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/* Sanity checking of iBFT. */
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if (ibft_addr->revision != 1) {
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if (ibft_addr->header.revision != 1) {
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printk(KERN_ERR "iBFT module supports only revision 1, " \
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"while this is %d.\n", ibft_addr->revision);
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"while this is %d.\n",
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ibft_addr->header.revision);
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return -ENOENT;
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}
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for (pos = (u8 *)ibft_addr; pos < (u8 *)ibft_addr + len; pos++)
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@ -558,7 +563,7 @@ static int __init ibft_check_device(void)
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/*
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* Helper function for ibft_register_kobjects.
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*/
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static int __init ibft_create_kobject(struct ibft_table_header *header,
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static int __init ibft_create_kobject(struct acpi_table_ibft *header,
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struct ibft_hdr *hdr,
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struct list_head *list)
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{
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@ -596,7 +601,7 @@ static int __init ibft_create_kobject(struct ibft_table_header *header,
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default:
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printk(KERN_ERR "iBFT has unknown structure type (%d). " \
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"Report this bug to %.6s!\n", hdr->id,
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header->oem_id);
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header->header.oem_id);
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rc = 1;
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break;
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}
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@ -649,7 +654,7 @@ out_invalid_struct:
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* found add them on the passed-in list. We do not support the other
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* fields at this point, so they are skipped.
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*/
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static int __init ibft_register_kobjects(struct ibft_table_header *header,
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static int __init ibft_register_kobjects(struct acpi_table_ibft *header,
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struct list_head *list)
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{
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struct ibft_control *control = NULL;
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@ -660,7 +665,7 @@ static int __init ibft_register_kobjects(struct ibft_table_header *header,
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control = (void *)header + sizeof(*header);
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end = (void *)control + control->hdr.length;
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eot_offset = (void *)header + header->length - (void *)control;
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eot_offset = (void *)header + header->header.length - (void *)control;
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rc = ibft_verify_hdr("control", (struct ibft_hdr *)control, id_control,
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sizeof(*control));
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@ -672,7 +677,8 @@ static int __init ibft_register_kobjects(struct ibft_table_header *header,
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}
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for (ptr = &control->initiator_off; ptr < end; ptr += sizeof(u16)) {
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offset = *(u16 *)ptr;
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if (offset && offset < header->length && offset < eot_offset) {
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if (offset && offset < header->header.length &&
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offset < eot_offset) {
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rc = ibft_create_kobject(header,
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(void *)header + offset,
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list);
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@ -1,5 +1,5 @@
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/*
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* Copyright 2007 Red Hat, Inc.
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* Copyright 2007-2010 Red Hat, Inc.
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* by Peter Jones <pjones@redhat.com>
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* Copyright 2007 IBM, Inc.
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* by Konrad Rzeszutek <konradr@linux.vnet.ibm.com>
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@ -22,6 +22,7 @@
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#include <linux/blkdev.h>
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#include <linux/ctype.h>
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#include <linux/device.h>
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#include <linux/efi.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/limits.h>
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@ -30,13 +31,15 @@
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#include <linux/stat.h>
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#include <linux/string.h>
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#include <linux/types.h>
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#include <linux/acpi.h>
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#include <linux/iscsi_ibft.h>
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#include <asm/mmzone.h>
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/*
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* Physical location of iSCSI Boot Format Table.
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*/
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struct ibft_table_header *ibft_addr;
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struct acpi_table_ibft *ibft_addr;
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EXPORT_SYMBOL_GPL(ibft_addr);
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#define IBFT_SIGN "iBFT"
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@ -46,6 +49,13 @@ EXPORT_SYMBOL_GPL(ibft_addr);
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#define VGA_MEM 0xA0000 /* VGA buffer */
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#define VGA_SIZE 0x20000 /* 128kB */
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#ifdef CONFIG_ACPI
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static int __init acpi_find_ibft(struct acpi_table_header *header)
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{
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ibft_addr = (struct acpi_table_ibft *)header;
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return 0;
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}
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#endif /* CONFIG_ACPI */
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/*
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* Routine used to find the iSCSI Boot Format Table. The logical
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@ -59,6 +69,11 @@ unsigned long __init find_ibft_region(unsigned long *sizep)
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ibft_addr = NULL;
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/* iBFT 1.03 section 1.4.3.1 mandates that UEFI machines will
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* only use ACPI for this */
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if (efi_enabled)
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return 0;
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for (pos = IBFT_START; pos < IBFT_END; pos += 16) {
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/* The table can't be inside the VGA BIOS reserved space,
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* so skip that area */
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@ -72,14 +87,24 @@ unsigned long __init find_ibft_region(unsigned long *sizep)
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/* if the length of the table extends past 1M,
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* the table cannot be valid. */
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if (pos + len <= (IBFT_END-1)) {
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ibft_addr = (struct ibft_table_header *)virt;
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ibft_addr = (struct acpi_table_ibft *)virt;
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break;
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}
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}
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}
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#ifdef CONFIG_ACPI
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/*
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* One spec says "IBFT", the other says "iBFT". We have to check
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* for both.
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*/
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if (!ibft_addr)
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acpi_table_parse(ACPI_SIG_IBFT, acpi_find_ibft);
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if (!ibft_addr)
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acpi_table_parse("iBFT", acpi_find_ibft);
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#endif /* CONFIG_ACPI */
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if (ibft_addr) {
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*sizep = PAGE_ALIGN(len);
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return pos;
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*sizep = PAGE_ALIGN(ibft_addr->header.length);
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return (u64)isa_virt_to_bus(ibft_addr);
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}
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*sizep = 0;
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@ -21,21 +21,13 @@
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#ifndef ISCSI_IBFT_H
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#define ISCSI_IBFT_H
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struct ibft_table_header {
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char signature[4];
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u32 length;
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u8 revision;
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u8 checksum;
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char oem_id[6];
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char oem_table_id[8];
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char reserved[24];
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} __attribute__((__packed__));
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#include <acpi/acpi.h>
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/*
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* Logical location of iSCSI Boot Format Table.
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* If the value is NULL there is no iBFT on the machine.
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*/
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extern struct ibft_table_header *ibft_addr;
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extern struct acpi_table_ibft *ibft_addr;
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/*
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* Routine used to find and reserve the iSCSI Boot Format Table. The
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