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Message-Id: <1402678823-24589-2-git-send-email-daniel.kiper@oracle.com>
Date: Fri, 13 Jun 2014 19:00:17 +0200
From: Daniel Kiper <daniel.kiper@...cle.com>
To: linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org,
x86@...nel.org, xen-devel@...ts.xenproject.org
Cc: andrew.cooper3@...rix.com, boris.ostrovsky@...cle.com,
david.vrabel@...rix.com, eshelton@...ox.com, hpa@...or.com,
ian.campbell@...rix.com, jbeulich@...e.com, jeremy@...p.org,
konrad.wilk@...cle.com, matt.fleming@...el.com, mingo@...hat.com,
mjg59@...f.ucam.org, stefano.stabellini@...citrix.com,
tglx@...utronix.de
Subject: [PATCH v5 1/7] efi: Use early_mem*() instead of early_io*()
Use early_mem*() instead of early_io*() because all mapped EFI regions
are true RAM not I/O regions. Additionally, I/O family calls do not work
correctly under Xen in our case. AIUI, early_io*() maps/unmaps real machine
addresses. However, all artificial EFI structures created under Xen live
in dom0 memory and should be mapped/unmapped using early_mem*() family
calls which map domain memory.
Signed-off-by: Daniel Kiper <daniel.kiper@...cle.com>
---
arch/x86/platform/efi/efi.c | 42 +++++++++++++++++++++---------------------
drivers/firmware/efi/efi.c | 4 ++--
2 files changed, 23 insertions(+), 23 deletions(-)
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index 87fc96b..dd1e351 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -427,7 +427,7 @@ void __init efi_unmap_memmap(void)
{
clear_bit(EFI_MEMMAP, &efi.flags);
if (memmap.map) {
- early_iounmap(memmap.map, memmap.nr_map * memmap.desc_size);
+ early_memunmap(memmap.map, memmap.nr_map * memmap.desc_size);
memmap.map = NULL;
}
}
@@ -467,12 +467,12 @@ static int __init efi_systab_init(void *phys)
if (!data)
return -ENOMEM;
}
- systab64 = early_ioremap((unsigned long)phys,
- sizeof(*systab64));
+ systab64 = early_memremap((unsigned long)phys,
+ sizeof(*systab64));
if (systab64 == NULL) {
pr_err("Couldn't map the system table!\n");
if (data)
- early_iounmap(data, sizeof(*data));
+ early_memunmap(data, sizeof(*data));
return -ENOMEM;
}
@@ -504,9 +504,9 @@ static int __init efi_systab_init(void *phys)
systab64->tables;
tmp |= data ? data->tables : systab64->tables;
- early_iounmap(systab64, sizeof(*systab64));
+ early_memunmap(systab64, sizeof(*systab64));
if (data)
- early_iounmap(data, sizeof(*data));
+ early_memunmap(data, sizeof(*data));
#ifdef CONFIG_X86_32
if (tmp >> 32) {
pr_err("EFI data located above 4GB, disabling EFI.\n");
@@ -516,8 +516,8 @@ static int __init efi_systab_init(void *phys)
} else {
efi_system_table_32_t *systab32;
- systab32 = early_ioremap((unsigned long)phys,
- sizeof(*systab32));
+ systab32 = early_memremap((unsigned long)phys,
+ sizeof(*systab32));
if (systab32 == NULL) {
pr_err("Couldn't map the system table!\n");
return -ENOMEM;
@@ -537,7 +537,7 @@ static int __init efi_systab_init(void *phys)
efi_systab.nr_tables = systab32->nr_tables;
efi_systab.tables = systab32->tables;
- early_iounmap(systab32, sizeof(*systab32));
+ early_memunmap(systab32, sizeof(*systab32));
}
efi.systab = &efi_systab;
@@ -563,8 +563,8 @@ static int __init efi_runtime_init32(void)
{
efi_runtime_services_32_t *runtime;
- runtime = early_ioremap((unsigned long)efi.systab->runtime,
- sizeof(efi_runtime_services_32_t));
+ runtime = early_memremap((unsigned long)efi.systab->runtime,
+ sizeof(efi_runtime_services_32_t));
if (!runtime) {
pr_err("Could not map the runtime service table!\n");
return -ENOMEM;
@@ -578,7 +578,7 @@ static int __init efi_runtime_init32(void)
efi_phys.set_virtual_address_map =
(efi_set_virtual_address_map_t *)
(unsigned long)runtime->set_virtual_address_map;
- early_iounmap(runtime, sizeof(efi_runtime_services_32_t));
+ early_memunmap(runtime, sizeof(efi_runtime_services_32_t));
return 0;
}
@@ -587,8 +587,8 @@ static int __init efi_runtime_init64(void)
{
efi_runtime_services_64_t *runtime;
- runtime = early_ioremap((unsigned long)efi.systab->runtime,
- sizeof(efi_runtime_services_64_t));
+ runtime = early_memremap((unsigned long)efi.systab->runtime,
+ sizeof(efi_runtime_services_64_t));
if (!runtime) {
pr_err("Could not map the runtime service table!\n");
return -ENOMEM;
@@ -602,7 +602,7 @@ static int __init efi_runtime_init64(void)
efi_phys.set_virtual_address_map =
(efi_set_virtual_address_map_t *)
(unsigned long)runtime->set_virtual_address_map;
- early_iounmap(runtime, sizeof(efi_runtime_services_64_t));
+ early_memunmap(runtime, sizeof(efi_runtime_services_64_t));
return 0;
}
@@ -633,8 +633,8 @@ static int __init efi_runtime_init(void)
static int __init efi_memmap_init(void)
{
/* Map the EFI memory map */
- memmap.map = early_ioremap((unsigned long)memmap.phys_map,
- memmap.nr_map * memmap.desc_size);
+ memmap.map = early_memremap((unsigned long)memmap.phys_map,
+ memmap.nr_map * memmap.desc_size);
if (memmap.map == NULL) {
pr_err("Could not map the memory map!\n");
return -ENOMEM;
@@ -697,10 +697,10 @@ static int __init efi_reuse_config(u64 tables, int nr_tables)
((efi_config_table_64_t *)p)->table = data->smbios;
p += sz;
}
- early_iounmap(tablep, nr_tables * sz);
+ early_memunmap(tablep, nr_tables * sz);
out_memremap:
- early_iounmap(data, sizeof(*data));
+ early_memunmap(data, sizeof(*data));
out:
return ret;
}
@@ -737,14 +737,14 @@ void __init efi_init(void)
/*
* Show what we know for posterity
*/
- c16 = tmp = early_ioremap(efi.systab->fw_vendor, 2);
+ c16 = tmp = early_memremap(efi.systab->fw_vendor, 2);
if (c16) {
for (i = 0; i < sizeof(vendor) - 1 && *c16; ++i)
vendor[i] = *c16++;
vendor[i] = '\0';
} else
pr_err("Could not map the firmware vendor!\n");
- early_iounmap(tmp, 2);
+ early_memunmap(tmp, 2);
pr_info("EFI v%u.%.02u by %s\n",
efi.systab->hdr.revision >> 16,
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index cd36deb..023937a 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -298,7 +298,7 @@ int __init efi_config_init(efi_config_table_type_t *arch_tables)
if (table64 >> 32) {
pr_cont("\n");
pr_err("Table located above 4GB, disabling EFI.\n");
- early_iounmap(config_tables,
+ early_memunmap(config_tables,
efi.systab->nr_tables * sz);
return -EINVAL;
}
@@ -314,7 +314,7 @@ int __init efi_config_init(efi_config_table_type_t *arch_tables)
tablep += sz;
}
pr_cont("\n");
- early_iounmap(config_tables, efi.systab->nr_tables * sz);
+ early_memunmap(config_tables, efi.systab->nr_tables * sz);
set_bit(EFI_CONFIG_TABLES, &efi.flags);
--
1.7.10.4
--
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