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Subject[PATCH 04/16] amd64_edac: Simplify CPU family detection
Date
From: Borislav Petkov <borislav.petkov@amd.com>

Concentrate CPU family detection in the per-family init function.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
---
drivers/edac/amd64_edac.c | 56 +++++++++++++++++++++++---------------------
drivers/edac/amd64_edac.h | 8 ++----
2 files changed, 32 insertions(+), 32 deletions(-)
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index bb9a342..a59c1da 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -783,19 +783,6 @@ static u16 extract_syndrome(struct err_regs *err)
return ((err->nbsh >> 15) & 0xff) | ((err->nbsl >> 16) & 0xff00);
}

-static void amd64_cpu_display_info(struct amd64_pvt *pvt)
-{
- if (boot_cpu_data.x86 == 0x10)
- edac_printk(KERN_DEBUG, EDAC_MC, "F10h CPU detected\n");
- else if (boot_cpu_data.x86 == 0xf)
- edac_printk(KERN_DEBUG, EDAC_MC, "%s detected\n",
- (pvt->ext_model >= K8_REV_F) ?
- "Rev F or later" : "Rev E or earlier");
- else
- /* we'll hardly ever ever get here */
- edac_printk(KERN_ERR, EDAC_MC, "Unknown cpu!\n");
-}
-
/*
* Determine if the DIMMs have ECC enabled. ECC is enabled ONLY if all the DIMMs
* are ECC capable.
@@ -1719,7 +1706,7 @@ static void amd64_debug_display_dimm_sizes(int ctrl, struct amd64_pvt *pvt)

static struct amd64_family_type amd64_family_types[] = {
[K8_CPUS] = {
- .ctl_name = "RevF",
+ .ctl_name = "K8",
.addr_f1_ctl = PCI_DEVICE_ID_AMD_K8_NB_ADDRMAP,
.misc_f3_ctl = PCI_DEVICE_ID_AMD_K8_NB_MISC,
.ops = {
@@ -1731,7 +1718,7 @@ static struct amd64_family_type amd64_family_types[] = {
}
},
[F10_CPUS] = {
- .ctl_name = "Family 10h",
+ .ctl_name = "F10h",
.addr_f1_ctl = PCI_DEVICE_ID_AMD_10H_NB_MAP,
.misc_f3_ctl = PCI_DEVICE_ID_AMD_10H_NB_MISC,
.ops = {
@@ -2137,8 +2124,6 @@ static void amd64_read_mc_registers(struct amd64_pvt *pvt)
} else
debugf0(" TOP_MEM2 disabled.\n");

- amd64_cpu_display_info(pvt);
-
amd64_read_pci_cfg(pvt->misc_f3_ctl, K8_NBCAP, &pvt->nbcap);

if (pvt->ops->read_dram_ctl_register)
@@ -2583,7 +2568,7 @@ static void amd64_setup_mci_misc_attributes(struct mem_ctl_info *mci)
mci->edac_cap = amd64_determine_edac_cap(pvt);
mci->mod_name = EDAC_MOD_STR;
mci->mod_ver = EDAC_AMD64_VERSION;
- mci->ctl_name = get_amd_family_name(pvt->mc_type_index);
+ mci->ctl_name = pvt->ctl_name;
mci->dev_name = pci_name(pvt->dram_f2_ctl);
mci->ctl_page_to_phys = NULL;

@@ -2592,21 +2577,37 @@ static void amd64_setup_mci_misc_attributes(struct mem_ctl_info *mci)
mci->get_sdram_scrub_rate = amd64_get_scrub_rate;
}

-static int amd64_per_family_init(struct amd64_pvt *pvt)
+/*
+ * returns a pointer to the family descriptor on success, NULL otherwise.
+ */
+static struct amd64_family_type *amd64_per_family_init(struct amd64_pvt *pvt)
{
- switch (boot_cpu_data.x86) {
+ u8 fam = boot_cpu_data.x86;
+ struct amd64_family_type *fam_type = NULL;
+
+ switch (fam) {
case 0xf:
- pvt->min_scrubrate = K8_MIN_SCRUB_RATE_BITS;
+ fam_type = &amd64_family_types[K8_CPUS];
+ pvt->ctl_name = fam_type->ctl_name;
+ pvt->min_scrubrate = K8_MIN_SCRUB_RATE_BITS;
break;
case 0x10:
- pvt->min_scrubrate = F10_MIN_SCRUB_RATE_BITS;
+ fam_type = &amd64_family_types[F10_CPUS];
+ pvt->ctl_name = fam_type->ctl_name;
+ pvt->min_scrubrate = F10_MIN_SCRUB_RATE_BITS;
break;

default:
amd64_printk(KERN_ERR, "Unsupported family!\n");
- return -EINVAL;
+ return NULL;
}
- return 0;
+
+ amd64_printk(KERN_INFO, "%s %s detected.\n", pvt->ctl_name,
+ (fam == 0xf ?
+ (pvt->ext_model >= K8_REV_F ? "revF or later"
+ : "revE or earlier")
+ : ""));
+ return fam_type;
}

/*
@@ -2625,6 +2626,7 @@ static int amd64_probe_one_instance(struct pci_dev *dram_f2_ctl,
int mc_type_index)
{
struct amd64_pvt *pvt = NULL;
+ struct amd64_family_type *fam_type = NULL;
int err = 0, ret;

ret = -ENOMEM;
@@ -2640,7 +2642,8 @@ static int amd64_probe_one_instance(struct pci_dev *dram_f2_ctl,
pvt->ops = family_ops(mc_type_index);

ret = -EINVAL;
- if (amd64_per_family_init(pvt))
+ fam_type = amd64_per_family_init(pvt);
+ if (!fam_type)
goto err_free;

/*
@@ -2762,8 +2765,7 @@ static int __devinit amd64_init_one_instance(struct pci_dev *pdev,
{
int ret = 0;

- debugf0("(MC node=%d,mc_type='%s')\n", get_node_id(pdev),
- get_amd_family_name(mc_type->driver_data));
+ debugf0("(MC node=%d)\n", get_node_id(pdev));

ret = pci_enable_device(pdev);
if (ret < 0)
diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h
index e5204fe..064e0d6 100644
--- a/drivers/edac/amd64_edac.h
+++ b/drivers/edac/amd64_edac.h
@@ -464,6 +464,9 @@ struct amd64_pvt {
/* DCT per-family scrubrate setting */
u32 min_scrubrate;

+ /* family name this instance is running on */
+ const char *ctl_name;
+
/* misc settings */
struct flags {
unsigned long cf8_extcfg:1;
@@ -526,11 +529,6 @@ struct amd64_family_type {

static struct amd64_family_type amd64_family_types[];

-static inline const char *get_amd_family_name(int index)
-{
- return amd64_family_types[index].ctl_name;
-}
-
static inline struct low_ops *family_ops(int index)
{
return &amd64_family_types[index].ops;
--
1.7.3.1.50.g1e633


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