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x86/amd_nb: Make amd_northbridges internal to amd_nb.c

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Hide amd_northbridges in amd_nb.c so that external callers will have to
use the exported accessor functions.

Also, fix some checkpatch.pl warnings.

Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: x86-ml <x86@kernel.org>
Link: http://lkml.kernel.org/r/1478812257-5424-2-git-send-email-Yazen.Ghannam@amd.com
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Yazen Ghannam 2016-11-10 15:10:53 -06:00 committed by Thomas Gleixner
parent 18807ddb7f
commit c7993890e7
2 changed files with 28 additions and 23 deletions
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18
arch/x86/include/asm/amd_nb.h
View File

@ -66,7 +66,6 @@ struct amd_northbridge_info {
u64 flags;
struct amd_northbridge *nb;
};
extern struct amd_northbridge_info amd_northbridges;
#define AMD_NB_GART BIT(0)
#define AMD_NB_L3_INDEX_DISABLE BIT(1)
@ -74,20 +73,9 @@ extern struct amd_northbridge_info amd_northbridges;
#ifdef CONFIG_AMD_NB
static inline u16 amd_nb_num(void)
{
return amd_northbridges.num;
}
static inline bool amd_nb_has_feature(unsigned feature)
{
return ((amd_northbridges.flags & feature) == feature);
}
static inline struct amd_northbridge *node_to_amd_nb(int node)
{
return (node < amd_northbridges.num) ? &amd_northbridges.nb[node] : NULL;
}
u16 amd_nb_num(void);
bool amd_nb_has_feature(unsigned int feature);
struct amd_northbridge *node_to_amd_nb(int node);
static inline u16 amd_pci_dev_to_node_id(struct pci_dev *pdev)
{

33
arch/x86/kernel/amd_nb.c
View File

@ -44,8 +44,25 @@ const struct amd_nb_bus_dev_range amd_nb_bus_dev_ranges[] __initconst = {
{ }
};
struct amd_northbridge_info amd_northbridges;
EXPORT_SYMBOL(amd_northbridges);
static struct amd_northbridge_info amd_northbridges;
u16 amd_nb_num(void)
{
return amd_northbridges.num;
}
EXPORT_SYMBOL(amd_nb_num);
bool amd_nb_has_feature(unsigned int feature)
{
return ((amd_northbridges.flags & feature) == feature);
}
EXPORT_SYMBOL(amd_nb_has_feature);
struct amd_northbridge *node_to_amd_nb(int node)
{
return (node < amd_northbridges.num) ? &amd_northbridges.nb[node] : NULL;
}
EXPORT_SYMBOL(node_to_amd_nb);
static struct pci_dev *next_northbridge(struct pci_dev *dev,
const struct pci_device_id *ids)
@ -64,7 +81,7 @@ int amd_cache_northbridges(void)
struct amd_northbridge *nb;
struct pci_dev *misc, *link;
if (amd_nb_num())
if (amd_northbridges.num)
return 0;
misc = NULL;
@ -82,7 +99,7 @@ int amd_cache_northbridges(void)
amd_northbridges.num = i;
link = misc = NULL;
for (i = 0; i != amd_nb_num(); i++) {
for (i = 0; i != amd_northbridges.num; i++) {
node_to_amd_nb(i)->misc = misc =
next_northbridge(misc, amd_nb_misc_ids);
node_to_amd_nb(i)->link = link =
@ -226,14 +243,14 @@ static void amd_cache_gart(void)
if (!amd_nb_has_feature(AMD_NB_GART))
return;
flush_words = kmalloc(amd_nb_num() * sizeof(u32), GFP_KERNEL);
flush_words = kmalloc_array(amd_northbridges.num, sizeof(u32), GFP_KERNEL);
if (!flush_words) {
amd_northbridges.flags &= ~AMD_NB_GART;
pr_notice("Cannot initialize GART flush words, GART support disabled\n");
return;
}
for (i = 0; i != amd_nb_num(); i++)
for (i = 0; i != amd_northbridges.num; i++)
pci_read_config_dword(node_to_amd_nb(i)->misc, 0x9c, &flush_words[i]);
}
@ -252,12 +269,12 @@ void amd_flush_garts(void)
that it doesn't matter to serialize more. -AK */
spin_lock_irqsave(&gart_lock, flags);
flushed = 0;
for (i = 0; i < amd_nb_num(); i++) {
for (i = 0; i < amd_northbridges.num; i++) {
pci_write_config_dword(node_to_amd_nb(i)->misc, 0x9c,
flush_words[i] | 1);
flushed++;
}
for (i = 0; i < amd_nb_num(); i++) {
for (i = 0; i < amd_northbridges.num; i++) {
u32 w;
/* Make sure the hardware actually executed the flush*/
for (;;) {