amd64_edac: Remove PCI ECS enabling functions
PCI ECS is being enabled by default since 2.6.26 on AMD so this code is
just superfluous now, remove it.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 98c0150..9efa88a 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -1204,31 +1204,6 @@
return dbam_map[cs_mode];
}
-/* Enable extended configuration access via 0xCF8 feature */
-static void amd64_setup(struct amd64_pvt *pvt)
-{
- u32 reg;
-
- amd64_read_pci_cfg(pvt->F3, F10_NB_CFG_HIGH, ®);
-
- pvt->flags.cf8_extcfg = !!(reg & F10_NB_CFG_LOW_ENABLE_EXT_CFG);
- reg |= F10_NB_CFG_LOW_ENABLE_EXT_CFG;
- pci_write_config_dword(pvt->F3, F10_NB_CFG_HIGH, reg);
-}
-
-/* Restore the extended configuration access via 0xCF8 feature */
-static void amd64_teardown(struct amd64_pvt *pvt)
-{
- u32 reg;
-
- amd64_read_pci_cfg(pvt->F3, F10_NB_CFG_HIGH, ®);
-
- reg &= ~F10_NB_CFG_LOW_ENABLE_EXT_CFG;
- if (pvt->flags.cf8_extcfg)
- reg |= F10_NB_CFG_LOW_ENABLE_EXT_CFG;
- pci_write_config_dword(pvt->F3, F10_NB_CFG_HIGH, reg);
-}
-
static u64 f10_get_error_address(struct mem_ctl_info *mci,
struct err_regs *info)
{
@@ -1251,8 +1226,6 @@
/* read the 'raw' DRAM BASE Address register */
amd64_read_pci_cfg(pvt->F1, low_offset, &low_base);
-
- /* Read from the ECS data register */
amd64_read_pci_cfg(pvt->F1, high_offset, &high_base);
/* Extract parts into separate data entries */
@@ -1271,8 +1244,6 @@
/* read the 'raw' LIMIT registers */
amd64_read_pci_cfg(pvt->F1, low_offset, &low_limit);
-
- /* Read from the ECS data register for the HIGH portion */
amd64_read_pci_cfg(pvt->F1, high_offset, &high_limit);
pvt->dram_DstNode[dram] = (low_limit & 0x7);
@@ -2560,18 +2531,6 @@
return fam_type;
}
-/*
- * Init stuff for this DRAM Controller device.
- *
- * Due to a hardware feature on Fam10h CPUs, the Enable Extended Configuration
- * Space feature MUST be enabled on ALL Processors prior to actually reading
- * from the ECS registers. Since the loading of the module can occur on any
- * 'core', and cores don't 'see' all the other processors ECS data when the
- * others are NOT enabled. Our solution is to first enable ECS access in this
- * routine on all processors, gather some data in a amd64_pvt structure and
- * later come back in a finish-setup function to perform that final
- * initialization. See also amd64_init_2nd_stage() for that.
- */
static int amd64_probe_one_instance(struct pci_dev *F2)
{
struct amd64_pvt *pvt = NULL;
@@ -2603,14 +2562,6 @@
goto err_put;
/*
- * Key operation here: setup of HW prior to performing ops on it. Some
- * setup is required to access ECS data. After this is performed, the
- * 'teardown' function must be called upon error and normal exit paths.
- */
- if (boot_cpu_data.x86 >= 0x10)
- amd64_setup(pvt);
-
- /*
* Save the pointer to the private data for use in 2nd initialization
* stage
*/
@@ -2690,9 +2641,6 @@
amd64_restore_ecc_error_reporting(pvt);
- if (boot_cpu_data.x86 > 0xf)
- amd64_teardown(pvt);
-
amd64_free_mc_sibling_devices(pvt);
kfree(pvts[pvt->mc_node_id]);
@@ -2734,9 +2682,6 @@
amd64_restore_ecc_error_reporting(pvt);
- if (boot_cpu_data.x86 > 0xf)
- amd64_teardown(pvt);
-
amd64_free_mc_sibling_devices(pvt);
/* unregister from EDAC MCE */
diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h
index 5538cc1..4bc6f18 100644
--- a/drivers/edac/amd64_edac.h
+++ b/drivers/edac/amd64_edac.h
@@ -335,9 +335,6 @@
#define K8_SCRCTRL 0x58
#define F10_NB_CFG_LOW 0x88
-#define F10_NB_CFG_LOW_ENABLE_EXT_CFG BIT(14)
-
-#define F10_NB_CFG_HIGH 0x8C
#define F10_ONLINE_SPARE 0xB0
#define F10_ONLINE_SPARE_SWAPDONE0(x) ((x) & BIT(1))
@@ -476,7 +473,6 @@
/* misc settings */
struct flags {
- unsigned long cf8_extcfg:1;
unsigned long nb_mce_enable:1;
unsigned long nb_ecc_prev:1;
} flags;
