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Date: Fri, 25 Dec 2015 15:09:14 -0700
From: Toshi Kani <toshi.kani@....com>
To: akpm@...ux-foundation.org, bp@...en8.de
Cc: linux-arch@...r.kernel.org, linux-mm@...ck.org,
linux-kernel@...r.kernel.org, Tony Luck <tony.luck@...el.com>,
linux-ia64@...r.kernel.org, Toshi Kani <toshi.kani@....com>
Subject: [PATCH v2 05/16] ia64: Set System RAM type and descriptor
Change efi_initialize_iomem_resources() to set 'flags' and 'desc'
from EFI memory types. IORESOURCE_SYSRAM, a modifier bit, is
set to 'flags' for System RAM as IORESOURCE_MEM is already set.
IORESOURCE_SYSTEM_RAM is defined as (IORESOURCE_MEM|IORESOURCE_SYSRAM).
I/O resource descritor is set to 'desc' for "ACPI Non-volatile
Storage" and "Persistent Memory".
Also set IORESOURCE_SYSTEM_RAM to 'flags' for "Kernel code",
"Kernel data", and "Kernel bss".
Cc: Tony Luck <tony.luck@...el.com>
Cc: linux-ia64@...r.kernel.org
Signed-off-by: Toshi Kani <toshi.kani@....com>
---
arch/ia64/kernel/efi.c | 13 ++++++++++---
arch/ia64/kernel/setup.c | 6 +++---
2 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index caae3f4..300dac3 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -1178,7 +1178,7 @@ efi_initialize_iomem_resources(struct resource *code_resource,
efi_memory_desc_t *md;
u64 efi_desc_size;
char *name;
- unsigned long flags;
+ unsigned long flags, desc;
efi_map_start = __va(ia64_boot_param->efi_memmap);
efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size;
@@ -1193,6 +1193,8 @@ efi_initialize_iomem_resources(struct resource *code_resource,
continue;
flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+ desc = IORES_DESC_NONE;
+
switch (md->type) {
case EFI_MEMORY_MAPPED_IO:
@@ -1207,14 +1209,17 @@ efi_initialize_iomem_resources(struct resource *code_resource,
if (md->attribute & EFI_MEMORY_WP) {
name = "System ROM";
flags |= IORESOURCE_READONLY;
- } else if (md->attribute == EFI_MEMORY_UC)
+ } else if (md->attribute == EFI_MEMORY_UC) {
name = "Uncached RAM";
- else
+ } else {
name = "System RAM";
+ flags |= IORESOURCE_SYSRAM;
+ }
break;
case EFI_ACPI_MEMORY_NVS:
name = "ACPI Non-volatile Storage";
+ desc = IORES_DESC_ACPI_NV_STORAGE;
break;
case EFI_UNUSABLE_MEMORY:
@@ -1224,6 +1229,7 @@ efi_initialize_iomem_resources(struct resource *code_resource,
case EFI_PERSISTENT_MEMORY:
name = "Persistent Memory";
+ desc = IORES_DESC_PERSISTENT_MEMORY;
break;
case EFI_RESERVED_TYPE:
@@ -1246,6 +1252,7 @@ efi_initialize_iomem_resources(struct resource *code_resource,
res->start = md->phys_addr;
res->end = md->phys_addr + efi_md_size(md) - 1;
res->flags = flags;
+ res->desc = desc;
if (insert_resource(&iomem_resource, res) < 0)
kfree(res);
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 4f118b0..2029a38 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -80,17 +80,17 @@ unsigned long vga_console_membase;
static struct resource data_resource = {
.name = "Kernel data",
- .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+ .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
static struct resource code_resource = {
.name = "Kernel code",
- .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+ .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
static struct resource bss_resource = {
.name = "Kernel bss",
- .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+ .flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM
};
unsigned long ia64_max_cacheline_size;
--
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