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Commit c29f5ec0 authored by Linus Torvalds's avatar Linus Torvalds
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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp 

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: (26 commits)
  amd64_edac: add MAINTAINERS entry
  EDAC: do not enable modules by default
  amd64_edac: do not enable module by default
  amd64_edac: add module registration routines
  amd64_edac: add ECC reporting initializers
  amd64_edac: add EDAC core-related initializers
  amd64_edac: add error decoding logic
  amd64_edac: add ECC chipkill syndrome mapping table
  amd64_edac: add per-family descriptors
  amd64_edac: add F10h-and-later methods-p3
  amd64_edac: add F10h-and-later methods-p2
  amd64_edac: add F10h-and-later methods-p1
  amd64_edac: add k8-specific methods
  amd64_edac: assign DRAM chip select base and mask in a family-specific way
  amd64_edac: add helper to dump relevant registers
  amd64_edac: add DRAM address type conversion facilities
  amd64_edac: add functionality to compute the DRAM hole
  amd64_edac: add sys addr to memory controller mapping helpers
  amd64_edac: add memory scrubber interface
  amd64_edac: add MCA error types
  ...
parents d3d07d94 c476c23b
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MAINTAINERS
View file @ c29f5ec0
......@@ -1979,6 +1979,16 @@ F: Documentation/edac.txt
F: drivers/edac/edac_*
F: include/linux/edac.h
EDAC-AMD64
P: Doug Thompson
M: dougthompson@xmission.com
P: Borislav Petkov
M: borislav.petkov@amd.com
L: bluesmoke-devel@lists.sourceforge.net (moderated for non-subscribers)
W: bluesmoke.sourceforge.net
S: Supported
F: drivers/edac/amd64_edac*
EDAC-E752X
P: Mark Gross
M: mark.gross@intel.com
......
arch/x86/include/asm/msr.h
View file @ c29f5ec0
......@@ -12,6 +12,17 @@
#include <asm/asm.h>
#include <asm/errno.h>
#include <asm/cpumask.h>
struct msr {
union {
struct {
u32 l;
u32 h;
};
u64 q;
};
};
static inline unsigned long long native_read_tscp(unsigned int *aux)
{
......@@ -216,6 +227,8 @@ do { \
#ifdef CONFIG_SMP
int rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h);
int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h);
void rdmsr_on_cpus(const cpumask_t *mask, u32 msr_no, struct msr *msrs);
void wrmsr_on_cpus(const cpumask_t *mask, u32 msr_no, struct msr *msrs);
int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h);
int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h);
#else /* CONFIG_SMP */
......@@ -229,6 +242,16 @@ static inline int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h)
wrmsr(msr_no, l, h);
return 0;
}
static inline void rdmsr_on_cpus(const cpumask_t *m, u32 msr_no,
struct msr *msrs)
{
rdmsr_on_cpu(0, msr_no, &(msrs[0].l), &(msrs[0].h));
}
static inline void wrmsr_on_cpus(const cpumask_t *m, u32 msr_no,
struct msr *msrs)
{
wrmsr_on_cpu(0, msr_no, msrs[0].l, msrs[0].h);
}
static inline int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no,
u32 *l, u32 *h)
{
......
arch/x86/lib/Makefile
View file @ c29f5ec0
......@@ -2,7 +2,7 @@
# Makefile for x86 specific library files.
#
obj-$(CONFIG_SMP) := msr-on-cpu.o
obj-$(CONFIG_SMP) := msr.o
lib-y := delay.o
lib-y += thunk_$(BITS).o
......
arch/x86/lib/msr-on-cpu.c → arch/x86/lib/msr.c
View file @ c29f5ec0
......@@ -5,22 +5,38 @@
struct msr_info {
u32 msr_no;
u32 l, h;
struct msr reg;
struct msr *msrs;
int off;
int err;
};
static void __rdmsr_on_cpu(void *info)
{
struct msr_info *rv = info;
struct msr *reg;
int this_cpu = raw_smp_processor_id();
rdmsr(rv->msr_no, rv->l, rv->h);
if (rv->msrs)
reg = &rv->msrs[this_cpu - rv->off];
else
reg = &rv->reg;
rdmsr(rv->msr_no, reg->l, reg->h);
}
static void __wrmsr_on_cpu(void *info)
{
struct msr_info *rv = info;
struct msr *reg;
int this_cpu = raw_smp_processor_id();
if (rv->msrs)
reg = &rv->msrs[this_cpu - rv->off];
else
reg = &rv->reg;
wrmsr(rv->msr_no, rv->l, rv->h);
wrmsr(rv->msr_no, reg->l, reg->h);
}
int rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h)
......@@ -28,26 +44,95 @@ int rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h)
int err;
struct msr_info rv;
memset(&rv, 0, sizeof(rv));
rv.msr_no = msr_no;
err = smp_call_function_single(cpu, __rdmsr_on_cpu, &rv, 1);
*l = rv.l;
*h = rv.h;
*l = rv.reg.l;
*h = rv.reg.h;
return err;
}
EXPORT_SYMBOL(rdmsr_on_cpu);
int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h)
{
int err;
struct msr_info rv;
memset(&rv, 0, sizeof(rv));
rv.msr_no = msr_no;
rv.l = l;
rv.h = h;
rv.reg.l = l;
rv.reg.h = h;
err = smp_call_function_single(cpu, __wrmsr_on_cpu, &rv, 1);
return err;
}
EXPORT_SYMBOL(wrmsr_on_cpu);
/* rdmsr on a bunch of CPUs
*
* @mask: which CPUs
* @msr_no: which MSR
* @msrs: array of MSR values
*
*/
void rdmsr_on_cpus(const cpumask_t *mask, u32 msr_no, struct msr *msrs)
{
struct msr_info rv;
int this_cpu;
memset(&rv, 0, sizeof(rv));
rv.off = cpumask_first(mask);
rv.msrs = msrs;
rv.msr_no = msr_no;
preempt_disable();
/*
* FIXME: handle the CPU we're executing on separately for now until
* smp_call_function_many has been fixed to not skip it.
*/
this_cpu = raw_smp_processor_id();
smp_call_function_single(this_cpu, __rdmsr_on_cpu, &rv, 1);
smp_call_function_many(mask, __rdmsr_on_cpu, &rv, 1);
preempt_enable();
}
EXPORT_SYMBOL(rdmsr_on_cpus);
/*
* wrmsr on a bunch of CPUs
*
* @mask: which CPUs
* @msr_no: which MSR
* @msrs: array of MSR values
*
*/
void wrmsr_on_cpus(const cpumask_t *mask, u32 msr_no, struct msr *msrs)
{
struct msr_info rv;
int this_cpu;
memset(&rv, 0, sizeof(rv));
rv.off = cpumask_first(mask);
rv.msrs = msrs;
rv.msr_no = msr_no;
preempt_disable();
/*
* FIXME: handle the CPU we're executing on separately for now until
* smp_call_function_many has been fixed to not skip it.
*/
this_cpu = raw_smp_processor_id();
smp_call_function_single(this_cpu, __wrmsr_on_cpu, &rv, 1);
smp_call_function_many(mask, __wrmsr_on_cpu, &rv, 1);
preempt_enable();
}
EXPORT_SYMBOL(wrmsr_on_cpus);
/* These "safe" variants are slower and should be used when the target MSR
may not actually exist. */
......@@ -55,14 +140,14 @@ static void __rdmsr_safe_on_cpu(void *info)
{
struct msr_info *rv = info;
rv->err = rdmsr_safe(rv->msr_no, &rv->l, &rv->h);
rv->err = rdmsr_safe(rv->msr_no, &rv->reg.l, &rv->reg.h);
}
static void __wrmsr_safe_on_cpu(void *info)
{
struct msr_info *rv = info;
rv->err = wrmsr_safe(rv->msr_no, rv->l, rv->h);
rv->err = wrmsr_safe(rv->msr_no, rv->reg.l, rv->reg.h);
}
int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h)
......@@ -70,28 +155,29 @@ int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h)
int err;
struct msr_info rv;
memset(&rv, 0, sizeof(rv));
rv.msr_no = msr_no;
err = smp_call_function_single(cpu, __rdmsr_safe_on_cpu, &rv, 1);
*l = rv.l;
*h = rv.h;
*l = rv.reg.l;
*h = rv.reg.h;
return err ? err : rv.err;
}
EXPORT_SYMBOL(rdmsr_safe_on_cpu);
int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h)
{
int err;
struct msr_info rv;
memset(&rv, 0, sizeof(rv));
rv.msr_no = msr_no;
rv.l = l;
rv.h = h;
rv.reg.l = l;
rv.reg.h = h;
err = smp_call_function_single(cpu, __wrmsr_safe_on_cpu, &rv, 1);
return err ? err : rv.err;
}
EXPORT_SYMBOL(rdmsr_on_cpu);
EXPORT_SYMBOL(wrmsr_on_cpu);
EXPORT_SYMBOL(rdmsr_safe_on_cpu);
EXPORT_SYMBOL(wrmsr_safe_on_cpu);
drivers/edac/Kconfig
View file @ c29f5ec0
......@@ -49,7 +49,6 @@ config EDAC_DEBUG_VERBOSE
config EDAC_MM_EDAC
tristate "Main Memory EDAC (Error Detection And Correction) reporting"
default y
help
Some systems are able to detect and correct errors in main
memory. EDAC can report statistics on memory error
......@@ -58,6 +57,31 @@ config EDAC_MM_EDAC
occurred so that a particular failing memory module can be
replaced. If unsure, select 'Y'.
config EDAC_AMD64
tristate "AMD64 (Opteron, Athlon64) K8, F10h, F11h"
depends on EDAC_MM_EDAC && K8_NB && X86_64 && PCI
help
Support for error detection and correction on the AMD 64
Families of Memory Controllers (K8, F10h and F11h)
config EDAC_AMD64_ERROR_INJECTION
bool "Sysfs Error Injection facilities"
depends on EDAC_AMD64
help
Recent Opterons (Family 10h and later) provide for Memory Error
Injection into the ECC detection circuits. The amd64_edac module
allows the operator/user to inject Uncorrectable and Correctable
errors into DRAM.
When enabled, in each of the respective memory controller directories
(/sys/devices/system/edac/mc/mcX), there are 3 input files:
- inject_section (0..3, 16-byte section of 64-byte cacheline),
- inject_word (0..8, 16-bit word of 16-byte section),
- inject_ecc_vector (hex ecc vector: select bits of inject word)
In addition, there are two control files, inject_read and inject_write,
which trigger the DRAM ECC Read and Write respectively.
config EDAC_AMD76X
tristate "AMD 76x (760, 762, 768)"
......
drivers/edac/Makefile
View file @ c29f5ec0
......@@ -30,6 +30,13 @@ obj-$(CONFIG_EDAC_I3000) += i3000_edac.o
obj-$(CONFIG_EDAC_X38) += x38_edac.o
obj-$(CONFIG_EDAC_I82860) += i82860_edac.o
obj-$(CONFIG_EDAC_R82600) += r82600_edac.o
amd64_edac_mod-y := amd64_edac_err_types.o amd64_edac.o
amd64_edac_mod-$(CONFIG_EDAC_DEBUG) += amd64_edac_dbg.o
amd64_edac_mod-$(CONFIG_EDAC_AMD64_ERROR_INJECTION) += amd64_edac_inj.o
obj-$(CONFIG_EDAC_AMD64) += amd64_edac_mod.o
obj-$(CONFIG_EDAC_PASEMI) += pasemi_edac.o
obj-$(CONFIG_EDAC_MPC85XX) += mpc85xx_edac.o
obj-$(CONFIG_EDAC_MV64X60) += mv64x60_edac.o
......
drivers/edac/amd64_edac.c 0 → 100644
View file @ c29f5ec0
#include "amd64_edac.h"
#include <asm/k8.h>
static struct edac_pci_ctl_info *amd64_ctl_pci;
static int report_gart_errors;
module_param(report_gart_errors, int, 0644);
/*
* Set by command line parameter. If BIOS has enabled the ECC, this override is
* cleared to prevent re-enabling the hardware by this driver.
*/
static int ecc_enable_override;
module_param(ecc_enable_override, int, 0644);
/* Lookup table for all possible MC control instances */
struct amd64_pvt;
static struct mem_ctl_info *mci_lookup[MAX_NUMNODES];
static struct amd64_pvt *pvt_lookup[MAX_NUMNODES];
/*
* Memory scrubber control interface. For K8, memory scrubbing is handled by
* hardware and can involve L2 cache, dcache as well as the main memory. With
* F10, this is extended to L3 cache scrubbing on CPU models sporting that
* functionality.
*
* This causes the "units" for the scrubbing speed to vary from 64 byte blocks
* (dram) over to cache lines. This is nasty, so we will use bandwidth in
* bytes/sec for the setting.
*
* Currently, we only do dram scrubbing. If the scrubbing is done in software on
* other archs, we might not have access to the caches directly.
*/
/*
* scan the scrub rate mapping table for a close or matching bandwidth value to
* issue. If requested is too big, then use last maximum value found.
*/
static int amd64_search_set_scrub_rate(struct pci_dev *ctl, u32 new_bw,
u32 min_scrubrate)
{
u32 scrubval;
int i;
/*
* map the configured rate (new_bw) to a value specific to the AMD64
* memory controller and apply to register. Search for the first
* bandwidth entry that is greater or equal than the setting requested
* and program that. If at last entry, turn off DRAM scrubbing.
*/
for (i = 0; i < ARRAY_SIZE(scrubrates); i++) {
/*
* skip scrub rates which aren't recommended
* (see F10 BKDG, F3x58)
*/
if (scrubrates[i].scrubval < min_scrubrate)
continue;
if (scrubrates[i].bandwidth <= new_bw)
break;
/*
* if no suitable bandwidth found, turn off DRAM scrubbing
* entirely by falling back to the last element in the
* scrubrates array.
*/
}
scrubval = scrubrates[i].scrubval;
if (scrubval)
edac_printk(KERN_DEBUG, EDAC_MC,
"Setting scrub rate bandwidth: %u\n",
scrubrates[i].bandwidth);
else
edac_printk(KERN_DEBUG, EDAC_MC, "Turning scrubbing off.\n");
pci_write_bits32(ctl, K8_SCRCTRL, scrubval, 0x001F);
return 0;
}
static int amd64_set_scrub_rate(struct mem_ctl_info *mci, u32 *bandwidth)
{
struct amd64_pvt *pvt = mci->pvt_info;
u32 min_scrubrate = 0x0;
switch (boot_cpu_data.x86) {
case 0xf:
min_scrubrate = K8_MIN_SCRUB_RATE_BITS;
break;
case 0x10:
min_scrubrate = F10_MIN_SCRUB_RATE_BITS;
break;
case 0x11:
min_scrubrate = F11_MIN_SCRUB_RATE_BITS;
break;
default:
amd64_printk(KERN_ERR, "Unsupported family!\n");
break;
}
return amd64_search_set_scrub_rate(pvt->misc_f3_ctl, *bandwidth,
min_scrubrate);
}
static int amd64_get_scrub_rate(struct mem_ctl_info *mci, u32 *bw)
{
struct amd64_pvt *pvt = mci->pvt_info;
u32 scrubval = 0;
int status = -1, i, ret = 0;
ret = pci_read_config_dword(pvt->misc_f3_ctl, K8_SCRCTRL, &scrubval);
if (ret)
debugf0("Reading K8_SCRCTRL failed\n");
scrubval = scrubval & 0x001F;
edac_printk(KERN_DEBUG, EDAC_MC,
"pci-read, sdram scrub control value: %d \n", scrubval);
for (i = 0; ARRAY_SIZE(scrubrates); i++) {
if (scrubrates[i].scrubval == scrubval) {
*bw = scrubrates[i].bandwidth;
status = 0;
break;
}
}
return status;
}
/* Map from a CSROW entry to the mask entry that operates on it */
static inline u32 amd64_map_to_dcs_mask(struct amd64_pvt *pvt, int csrow)
{
return csrow >> (pvt->num_dcsm >> 3);
}
/* return the 'base' address the i'th CS entry of the 'dct' DRAM controller */
static u32 amd64_get_dct_base(struct amd64_pvt *pvt, int dct, int csrow)
{
if (dct == 0)
return pvt->dcsb0[csrow];
else
return pvt->dcsb1[csrow];
}
/*
* Return the 'mask' address the i'th CS entry. This function is needed because
* there number of DCSM registers on Rev E and prior vs Rev F and later is
* different.
*/
static u32 amd64_get_dct_mask(struct amd64_pvt *pvt, int dct, int csrow)
{
if (dct == 0)
return pvt->dcsm0[amd64_map_to_dcs_mask(pvt, csrow)];
else
return pvt->dcsm1[amd64_map_to_dcs_mask(pvt, csrow)];
}
/*
* In *base and *limit, pass back the full 40-bit base and limit physical
* addresses for the node given by node_id. This information is obtained from
* DRAM Base (section 3.4.4.1) and DRAM Limit (section 3.4.4.2) registers. The
* base and limit addresses are of type SysAddr, as defined at the start of
* section 3.4.4 (p. 70). They are the lowest and highest physical addresses
* in the address range they represent.
*/
static void amd64_get_base_and_limit(struct amd64_pvt *pvt, int node_id,
u64 *base, u64 *limit)
{
*base = pvt->dram_base[node_id];
*limit = pvt->dram_limit[node_id];
}
/*
* Return 1 if the SysAddr given by sys_addr matches the base/limit associated
* with node_id
*/
static int amd64_base_limit_match(struct amd64_pvt *pvt,
u64 sys_addr, int node_id)
{
u64 base, limit, addr;
amd64_get_base_and_limit(pvt, node_id, &base, &limit);
/* The K8 treats this as a 40-bit value. However, bits 63-40 will be
* all ones if the most significant implemented address bit is 1.
* Here we discard bits 63-40. See section 3.4.2 of AMD publication
* 24592: AMD x86-64 Architecture Programmer's Manual Volume 1
* Application Programming.
*/
addr = sys_addr & 0x000000ffffffffffull;
return (addr >= base) && (addr <= limit);
}
/*
* Attempt to map a SysAddr to a node. On success, return a pointer to the
* mem_ctl_info structure for the node that the SysAddr maps to.
*
* On failure, return NULL.
*/
static struct mem_ctl_info *find_mc_by_sys_addr(struct mem_ctl_info *mci,
u64 sys_addr)
{
struct amd64_pvt *pvt;
int node_id;
u32 intlv_en, bits;
/*
* Here we use the DRAM Base (section 3.4.4.1) and DRAM Limit (section
* 3.4.4.2) registers to map the SysAddr to a node ID.
*/
pvt = mci->pvt_info;
/*
* The value of this field should be the same for all DRAM Base
* registers. Therefore we arbitrarily choose to read it from the
* register for node 0.
*/
intlv_en = pvt->dram_IntlvEn[0];
if (intlv_en == 0) {
for (node_id = 0; ; ) {
if (amd64_base_limit_match(pvt, sys_addr, node_id))
break;
if (++node_id >= DRAM_REG_COUNT)
goto err_no_match;
}
goto found;
}
if (unlikely((intlv_en != (0x01 << 8)) &&
(intlv_en != (0x03 << 8)) &&
(intlv_en != (0x07 << 8)))) {
amd64_printk(KERN_WARNING, "junk value of 0x%x extracted from "
"IntlvEn field of DRAM Base Register for node 0: "
"This probably indicates a BIOS bug.\n", intlv_en);
return NULL;
}
bits = (((u32) sys_addr) >> 12) & intlv_en;
for (node_id = 0; ; ) {
if ((pvt->dram_limit[node_id] & intlv_en) == bits)
break; /* intlv_sel field matches */
if (++node_id >= DRAM_REG_COUNT)
goto err_no_match;
}
/* sanity test for sys_addr */
if (unlikely(!amd64_base_limit_match(pvt, sys_addr, node_id))) {
amd64_printk(KERN_WARNING,
"%s(): sys_addr 0x%lx falls outside base/limit "
"address range for node %d with node interleaving "
"enabled.\n", __func__, (unsigned long)sys_addr,
node_id);
return NULL;
}
found:
return edac_mc_find(node_id);
err_no_match:
debugf2("sys_addr 0x%lx doesn't match any node\n",
(unsigned long)sys_addr);
return NULL;
}
/*
* Extract the DRAM CS base address from selected csrow register.
*/
static u64 base_from_dct_base(struct amd64_pvt *pvt, int csrow)
{
return ((u64) (amd64_get_dct_base(pvt, 0, csrow) & pvt->dcsb_base)) <<
pvt->dcs_shift;
}
/*
* Extract the mask from the dcsb0[csrow] entry in a CPU revision-specific way.
*/
static u64 mask_from_dct_mask(struct amd64_pvt *pvt, int csrow)
{
u64 dcsm_bits, other_bits;
u64 mask;
/* Extract bits from DRAM CS Mask. */
dcsm_bits = amd64_get_dct_mask(pvt, 0, csrow) & pvt->dcsm_mask;
other_bits = pvt->dcsm_mask;
other_bits = ~(other_bits << pvt->dcs_shift);
/*
* The extracted bits from DCSM belong in the spaces represented by
* the cleared bits in other_bits.
*/
mask = (dcsm_bits << pvt->dcs_shift) | other_bits;
return mask;
}
/*
* @input_addr is an InputAddr associated with the node given by mci. Return the
* csrow that input_addr maps to, or -1 on failure (no csrow claims input_addr).
*/
static int input_addr_to_csrow(struct mem_ctl_info *mci, u64 input_addr)
{
struct amd64_pvt *pvt;
int csrow;
u64 base, mask;
pvt = mci->pvt_info;
/*
* Here we use the DRAM CS Base and DRAM CS Mask registers. For each CS
* base/mask register pair, test the condition shown near the start of
* section 3.5.4 (p. 84, BKDG #26094, K8, revA-E).
*/
for (csrow = 0; csrow < CHIPSELECT_COUNT; csrow++) {
/* This DRAM chip select is disabled on this node */
if ((pvt->dcsb0[csrow] & K8_DCSB_CS_ENABLE) == 0)
continue;
base = base_from_dct_base(pvt, csrow);
mask = ~mask_from_dct_mask(pvt, csrow);
if ((input_addr & mask) == (base & mask)) {
debugf2("InputAddr 0x%lx matches csrow %d (node %d)\n",
(unsigned long)input_addr, csrow,
pvt->mc_node_id);
return csrow;
}
}
debugf2("no matching csrow for InputAddr 0x%lx (MC node %d)\n",
(unsigned long)input_addr, pvt->mc_node_id);
return -1;
}
/*
* Return the base value defined by the DRAM Base register for the node
* represented by mci. This function returns the full 40-bit value despite the
* fact that the register only stores bits 39-24 of the value. See section
* 3.4.4.1 (BKDG #26094, K8, revA-E)
*/
static inline u64 get_dram_base(struct mem_ctl_info *mci)
{
struct amd64_pvt *pvt = mci->pvt_info;
return pvt->dram_base[pvt->mc_node_id];
}
/*
* Obtain info from the DRAM Hole Address Register (section 3.4.8, pub #26094)
* for the node represented by mci. Info is passed back in *hole_base,
* *hole_offset, and *hole_size. Function returns 0 if info is valid or 1 if
* info is invalid. Info may be invalid for either of the following reasons:
*
* - The revision of the node is not E or greater. In this case, the DRAM Hole
* Address Register does not exist.
*
* - The DramHoleValid bit is cleared in the DRAM Hole Address Register,
* indicating that its contents are not valid.
*
* The values passed back in *hole_base, *hole_offset, and *hole_size are
* complete 32-bit values despite the fact that the bitfields in the DHAR
* only represent bits 31-24 of the base and offset values.
*/
int amd64_get_dram_hole_info(struct mem_ctl_info *mci, u64 *hole_base,
u64 *hole_offset, u64 *hole_size)
{
struct amd64_pvt *pvt = mci->pvt_info;
u64 base;
/* only revE and later have the DRAM Hole Address Register */
if (boot_cpu_data.x86 == 0xf && pvt->ext_model < OPTERON_CPU_REV_E) {
debugf1(" revision %d for node %d does not support DHAR\n",
pvt->ext_model, pvt->mc_node_id);
return 1;
}
/* only valid for Fam10h */
if (boot_cpu_data.x86 == 0x10 &&
(pvt->dhar & F10_DRAM_MEM_HOIST_VALID) == 0) {
debugf1(" Dram Memory Hoisting is DISABLED on this system\n");
return 1;
}
if ((pvt->dhar & DHAR_VALID) == 0) {
debugf1(" Dram Memory Hoisting is DISABLED on this node %d\n",
pvt->mc_node_id);
return 1;
}
/* This node has Memory Hoisting */
/* +------------------+--------------------+--------------------+-----
* | memory | DRAM hole | relocated |
* | [0, (x - 1)] | [x, 0xffffffff] | addresses from |
* | | | DRAM hole |
* | | | [0x100000000, |
* | | | (0x100000000+ |
* | | | (0xffffffff-x))] |
* +------------------+--------------------+--------------------+-----
*
* Above is a diagram of physical memory showing the DRAM hole and the
* relocated addresses from the DRAM hole. As shown, the DRAM hole
* starts at address x (the base address) and extends through address
* 0xffffffff. The DRAM Hole Address Register (DHAR) relocates the
* addresses in the hole so that they start at 0x100000000.
*/
base = dhar_base(pvt->dhar);
*hole_base = base;
*hole_size = (0x1ull << 32) - base;
if (boot_cpu_data.x86 > 0xf)
*hole_offset = f10_dhar_offset(pvt->dhar);
else
*hole_offset = k8_dhar_offset(pvt->dhar);
debugf1(" DHAR info for node %d base 0x%lx offset 0x%lx size 0x%lx\n",
pvt->mc_node_id, (unsigned long)*hole_base,
(unsigned long)*hole_offset, (unsigned long)*hole_size);
return 0;
}
EXPORT_SYMBOL_GPL(amd64_get_dram_hole_info);
/*
* Return the DramAddr that the SysAddr given by @sys_addr maps to. It is
* assumed that sys_addr maps to the node given by mci.
*
* The first part of section 3.4.4 (p. 70) shows how the DRAM Base (section
* 3.4.4.1) and DRAM Limit (section 3.4.4.2) registers are used to translate a
* SysAddr to a DramAddr. If the DRAM Hole Address Register (DHAR) is enabled,
* then it is also involved in translating a SysAddr to a DramAddr. Sections
* 3.4.8 and 3.5.8.2 describe the DHAR and how it is used for memory hoisting.
* These parts of the documentation are unclear. I interpret them as follows:
*
* When node n receives a SysAddr, it processes the SysAddr as follows:
*
* 1. It extracts the DRAMBase and DRAMLimit values from the DRAM Base and DRAM
* Limit registers for node n. If the SysAddr is not within the range
* specified by the base and limit values, then node n ignores the Sysaddr
* (since it does not map to node n). Otherwise continue to step 2 below.
*
* 2. If the DramHoleValid bit of the DHAR for node n is clear, the DHAR is
* disabled so skip to step 3 below. Otherwise see if the SysAddr is within
* the range of relocated addresses (starting at 0x100000000) from the DRAM
* hole. If not, skip to step 3 below. Else get the value of the
* DramHoleOffset field from the DHAR. To obtain the DramAddr, subtract the
* offset defined by this value from the SysAddr.
*
* 3. Obtain the base address for node n from the DRAMBase field of the DRAM
* Base register for node n. To obtain the DramAddr, subtract the base
* address from the SysAddr, as shown near the start of section 3.4.4 (p.70).
*/
static u64 sys_addr_to_dram_addr(struct mem_ctl_info *mci, u64 sys_addr)
{
u64 dram_base, hole_base, hole_offset, hole_size, dram_addr;
int ret = 0;
dram_base = get_dram_base(mci);
ret = amd64_get_dram_hole_info(mci, &hole_base, &hole_offset,
&hole_size);
if (!ret) {
if ((sys_addr >= (1ull << 32)) &&
(sys_addr < ((1ull << 32) + hole_size))) {
/* use DHAR to translate SysAddr to DramAddr */
dram_addr = sys_addr - hole_offset;
debugf2("using DHAR to translate SysAddr 0x%lx to "
"DramAddr 0x%lx\n",
(unsigned long)sys_addr,
(unsigned long)dram_addr);
return dram_addr;
}
}
/*
* Translate the SysAddr to a DramAddr as shown near the start of
* section 3.4.4 (p. 70). Although sys_addr is a 64-bit value, the k8
* only deals with 40-bit values. Therefore we discard bits 63-40 of
* sys_addr below. If bit 39 of sys_addr is 1 then the bits we
* discard are all 1s. Otherwise the bits we discard are all 0s. See
* section 3.4.2 of AMD publication 24592: AMD x86-64 Architecture
* Programmer's Manual Volume 1 Application Programming.
*/
dram_addr = (sys_addr & 0xffffffffffull) - dram_base;
debugf2("using DRAM Base register to translate SysAddr 0x%lx to "
"DramAddr 0x%lx\n", (unsigned long)sys_addr,
(unsigned long)dram_addr);
return dram_addr;
}
/*
* @intlv_en is the value of the IntlvEn field from a DRAM Base register
* (section 3.4.4.1). Return the number of bits from a SysAddr that are used
* for node interleaving.
*/
static int num_node_interleave_bits(unsigned intlv_en)
{
static const int intlv_shift_table[] = { 0, 1, 0, 2, 0, 0, 0, 3 };
int n;
BUG_ON(intlv_en > 7);
n = intlv_shift_table[intlv_en];
return n;
}
/* Translate the DramAddr given by @dram_addr to an InputAddr. */
static u64 dram_addr_to_input_addr(struct mem_ctl_info *mci, u64 dram_addr)
{
struct amd64_pvt *pvt;
int intlv_shift;
u64 input_addr;
pvt = mci->pvt_info;
/*
* See the start of section 3.4.4 (p. 70, BKDG #26094, K8, revA-E)
* concerning translating a DramAddr to an InputAddr.
*/
intlv_shift = num_node_interleave_bits(pvt->dram_IntlvEn[0]);
input_addr = ((dram_addr >> intlv_shift) & 0xffffff000ull) +
(dram_addr & 0xfff);
debugf2(" Intlv Shift=%d DramAddr=0x%lx maps to InputAddr=0x%lx\n",
intlv_shift, (unsigned long)dram_addr,
(unsigned long)input_addr);
return input_addr;
}
/*
* Translate the SysAddr represented by @sys_addr to an InputAddr. It is
* assumed that @sys_addr maps to the node given by mci.
*/
static u64 sys_addr_to_input_addr(struct mem_ctl_info *mci, u64 sys_addr)
{
u64 input_addr;
input_addr =
dram_addr_to_input_addr(mci, sys_addr_to_dram_addr(mci, sys_addr));
debugf2("SysAdddr 0x%lx translates to InputAddr 0x%lx\n",
(unsigned long)sys_addr, (unsigned long)input_addr);
return input_addr;
}
/*
* @input_addr is an InputAddr associated with the node represented by mci.
* Translate @input_addr to a DramAddr and return the result.
*/
static u64 input_addr_to_dram_addr(struct mem_ctl_info *mci, u64 input_addr)
{
struct amd64_pvt *pvt;
int node_id, intlv_shift;
u64 bits, dram_addr;
u32 intlv_sel;
/*
* Near the start of section 3.4.4 (p. 70, BKDG #26094, K8, revA-E)
* shows how to translate a DramAddr to an InputAddr. Here we reverse
* this procedure. When translating from a DramAddr to an InputAddr, the
* bits used for node interleaving are discarded. Here we recover these
* bits from the IntlvSel field of the DRAM Limit register (section
* 3.4.4.2) for the node that input_addr is associated with.
*/
pvt = mci->pvt_info;
node_id = pvt->mc_node_id;
BUG_ON((node_id < 0) || (node_id > 7));
intlv_shift = num_node_interleave_bits(pvt->dram_IntlvEn[0]);
if (intlv_shift == 0) {
debugf1(" InputAddr 0x%lx translates to DramAddr of "
"same value\n", (unsigned long)input_addr);
return input_addr;
}
bits = ((input_addr & 0xffffff000ull) << intlv_shift) +
(input_addr & 0xfff);
intlv_sel = pvt->dram_IntlvSel[node_id] & ((1 << intlv_shift) - 1);
dram_addr = bits + (intlv_sel << 12);
debugf1("InputAddr 0x%lx translates to DramAddr 0x%lx "
"(%d node interleave bits)\n", (unsigned long)input_addr,
(unsigned long)dram_addr, intlv_shift);
return dram_addr;
}
/*
* @dram_addr is a DramAddr that maps to the node represented by mci. Convert
* @dram_addr to a SysAddr.
*/
static u64 dram_addr_to_sys_addr(struct mem_ctl_info *mci, u64 dram_addr)
{
struct amd64_pvt *pvt = mci->pvt_info;
u64 hole_base, hole_offset, hole_size, base, limit, sys_addr;
int ret = 0;
ret = amd64_get_dram_hole_info(mci, &hole_base, &hole_offset,
&hole_size);
if (!ret) {
if ((dram_addr >= hole_base) &&
(dram_addr < (hole_base + hole_size))) {
sys_addr = dram_addr + hole_offset;
debugf1("using DHAR to translate DramAddr 0x%lx to "
"SysAddr 0x%lx\n", (unsigned long)dram_addr,
(unsigned long)sys_addr);
return sys_addr;
}
}
amd64_get_base_and_limit(pvt, pvt->mc_node_id, &base, &limit);
sys_addr = dram_addr + base;
/*
* The sys_addr we have computed up to this point is a 40-bit value
* because the k8 deals with 40-bit values. However, the value we are
* supposed to return is a full 64-bit physical address. The AMD
* x86-64 architecture specifies that the most significant implemented
* address bit through bit 63 of a physical address must be either all
* 0s or all 1s. Therefore we sign-extend the 40-bit sys_addr to a
* 64-bit value below. See section 3.4.2 of AMD publication 24592:
* AMD x86-64 Architecture Programmer's Manual Volume 1 Application
* Programming.
*/
sys_addr |= ~((sys_addr & (1ull << 39)) - 1);
debugf1(" Node %d, DramAddr 0x%lx to SysAddr 0x%lx\n",
pvt->mc_node_id, (unsigned long)dram_addr,
(unsigned long)sys_addr);
return sys_addr;
}
/*
* @input_addr is an InputAddr associated with the node given by mci. Translate
* @input_addr to a SysAddr.
*/
static inline u64 input_addr_to_sys_addr(struct mem_ctl_info *mci,
u64 input_addr)
{
return dram_addr_to_sys_addr(mci,
input_addr_to_dram_addr(mci, input_addr));
}
/*
* Find the minimum and maximum InputAddr values that map to the given @csrow.
* Pass back these values in *input_addr_min and *input_addr_max.
*/
static void find_csrow_limits(struct mem_ctl_info *mci, int csrow,
u64 *input_addr_min, u64 *input_addr_max)
{
struct amd64_pvt *pvt;
u64 base, mask;
pvt = mci->pvt_info;
BUG_ON((csrow < 0) || (csrow >= CHIPSELECT_COUNT));
base = base_from_dct_base(pvt, csrow);
mask = mask_from_dct_mask(pvt, csrow);
*input_addr_min = base & ~mask;
*input_addr_max = base | mask | pvt->dcs_mask_notused;
}
/*
* Extract error address from MCA NB Address Low (section 3.6.4.5) and MCA NB
* Address High (section 3.6.4.6) register values and return the result. Address
* is located in the info structure (nbeah and nbeal), the encoding is device
* specific.
*/
static u64 extract_error_address(struct mem_ctl_info *mci,
struct amd64_error_info_regs *info)
{
struct amd64_pvt *pvt = mci->pvt_info;
return pvt->ops->get_error_address(mci, info);
}
/* Map the Error address to a PAGE and PAGE OFFSET. */
static inline void error_address_to_page_and_offset(u64 error_address,
u32 *page, u32 *offset)
{
*page = (u32) (error_address >> PAGE_SHIFT);
*offset = ((u32) error_address) & ~PAGE_MASK;
}
/*
* @sys_addr is an error address (a SysAddr) extracted from the MCA NB Address
* Low (section 3.6.4.5) and MCA NB Address High (section 3.6.4.6) registers
* of a node that detected an ECC memory error. mci represents the node that
* the error address maps to (possibly different from the node that detected
* the error). Return the number of the csrow that sys_addr maps to, or -1 on
* error.
*/
static int sys_addr_to_csrow(struct mem_ctl_info *mci, u64 sys_addr)
{
int csrow;
csrow = input_addr_to_csrow(mci, sys_addr_to_input_addr(mci, sys_addr));
if (csrow == -1)
amd64_mc_printk(mci, KERN_ERR,
"Failed to translate InputAddr to csrow for "
"address 0x%lx\n", (unsigned long)sys_addr);
return csrow;
}
static int get_channel_from_ecc_syndrome(unsigned short syndrome);
static void amd64_cpu_display_info(struct amd64_pvt *pvt)
{
if (boot_cpu_data.x86 == 0x11)
edac_printk(KERN_DEBUG, EDAC_MC, "F11h CPU detected\n");
else 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 >= OPTERON_CPU_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.
*/
static enum edac_type amd64_determine_edac_cap(struct amd64_pvt *pvt)
{
int bit;
enum dev_type edac_cap = EDAC_NONE;
bit = (boot_cpu_data.x86 > 0xf || pvt->ext_model >= OPTERON_CPU_REV_F)
? 19
: 17;
if (pvt->dclr0 >> BIT(bit))
edac_cap = EDAC_FLAG_SECDED;
return edac_cap;
}
static void f10_debug_display_dimm_sizes(int ctrl, struct amd64_pvt *pvt,
int ganged);
/* Display and decode various NB registers for debug purposes. */
static void amd64_dump_misc_regs(struct amd64_pvt *pvt)
{
int ganged;
debugf1(" nbcap:0x%8.08x DctDualCap=%s DualNode=%s 8-Node=%s\n",
pvt->nbcap,
(pvt->nbcap & K8_NBCAP_DCT_DUAL) ? "True" : "False",
(pvt->nbcap & K8_NBCAP_DUAL_NODE) ? "True" : "False",
(pvt->nbcap & K8_NBCAP_8_NODE) ? "True" : "False");
debugf1(" ECC Capable=%s ChipKill Capable=%s\n",
(pvt->nbcap & K8_NBCAP_SECDED) ? "True" : "False",
(pvt->nbcap & K8_NBCAP_CHIPKILL) ? "True" : "False");
debugf1(" DramCfg0-low=0x%08x DIMM-ECC=%s Parity=%s Width=%s\n",
pvt->dclr0,
(pvt->dclr0 & BIT(19)) ? "Enabled" : "Disabled",
(pvt->dclr0 & BIT(8)) ? "Enabled" : "Disabled",
(pvt->dclr0 & BIT(11)) ? "128b" : "64b");
debugf1(" DIMM x4 Present: L0=%s L1=%s L2=%s L3=%s DIMM Type=%s\n",
(pvt->dclr0 & BIT(12)) ? "Y" : "N",
(pvt->dclr0 & BIT(13)) ? "Y" : "N",
(pvt->dclr0 & BIT(14)) ? "Y" : "N",
(pvt->dclr0 & BIT(15)) ? "Y" : "N",
(pvt->dclr0 & BIT(16)) ? "UN-Buffered" : "Buffered");
debugf1(" online-spare: 0x%8.08x\n", pvt->online_spare);
if (boot_cpu_data.x86 == 0xf) {
debugf1(" dhar: 0x%8.08x Base=0x%08x Offset=0x%08x\n",
pvt->dhar, dhar_base(pvt->dhar),
k8_dhar_offset(pvt->dhar));
debugf1(" DramHoleValid=%s\n",
(pvt->dhar & DHAR_VALID) ? "True" : "False");
debugf1(" dbam-dkt: 0x%8.08x\n", pvt->dbam0);
/* everything below this point is Fam10h and above */
return;
} else {
debugf1(" dhar: 0x%8.08x Base=0x%08x Offset=0x%08x\n",
pvt->dhar, dhar_base(pvt->dhar),
f10_dhar_offset(pvt->dhar));
debugf1(" DramMemHoistValid=%s DramHoleValid=%s\n",
(pvt->dhar & F10_DRAM_MEM_HOIST_VALID) ?
"True" : "False",
(pvt->dhar & DHAR_VALID) ?
"True" : "False");
}
/* Only if NOT ganged does dcl1 have valid info */
if (!dct_ganging_enabled(pvt)) {
debugf1(" DramCfg1-low=0x%08x DIMM-ECC=%s Parity=%s "
"Width=%s\n", pvt->dclr1,
(pvt->dclr1 & BIT(19)) ? "Enabled" : "Disabled",
(pvt->dclr1 & BIT(8)) ? "Enabled" : "Disabled",
(pvt->dclr1 & BIT(11)) ? "128b" : "64b");
debugf1(" DIMM x4 Present: L0=%s L1=%s L2=%s L3=%s "
"DIMM Type=%s\n",
(pvt->dclr1 & BIT(12)) ? "Y" : "N",
(pvt->dclr1 & BIT(13)) ? "Y" : "N",
(pvt->dclr1 & BIT(14)) ? "Y" : "N",
(pvt->dclr1 & BIT(15)) ? "Y" : "N",
(pvt->dclr1 & BIT(16)) ? "UN-Buffered" : "Buffered");
}
/*
* Determine if ganged and then dump memory sizes for first controller,
* and if NOT ganged dump info for 2nd controller.
*/
ganged = dct_ganging_enabled(pvt);
f10_debug_display_dimm_sizes(0, pvt, ganged);
if (!ganged)
f10_debug_display_dimm_sizes(1, pvt, ganged);
}
/* Read in both of DBAM registers */
static void amd64_read_dbam_reg(struct amd64_pvt *pvt)
{
int err = 0;
unsigned int reg;
reg = DBAM0;
err = pci_read_config_dword(pvt->dram_f2_ctl, reg, &pvt->dbam0);
if (err)
goto err_reg;
if (boot_cpu_data.x86 >= 0x10) {
reg = DBAM1;
err = pci_read_config_dword(pvt->dram_f2_ctl, reg, &pvt->dbam1);
if (err)
goto err_reg;
}
err_reg:
debugf0("Error reading F2x%03x.\n", reg);
}
/*
* NOTE: CPU Revision Dependent code: Rev E and Rev F
*
* Set the DCSB and DCSM mask values depending on the CPU revision value. Also
* set the shift factor for the DCSB and DCSM values.
*
* ->dcs_mask_notused, RevE:
*
* To find the max InputAddr for the csrow, start with the base address and set
* all bits that are "don't care" bits in the test at the start of section
* 3.5.4 (p. 84).
*
* The "don't care" bits are all set bits in the mask and all bits in the gaps
* between bit ranges [35:25] and [19:13]. The value REV_E_DCS_NOTUSED_BITS
* represents bits [24:20] and [12:0], which are all bits in the above-mentioned
* gaps.
*
* ->dcs_mask_notused, RevF and later:
*
* To find the max InputAddr for the csrow, start with the base address and set
* all bits that are "don't care" bits in the test at the start of NPT section
* 4.5.4 (p. 87).
*
* The "don't care" bits are all set bits in the mask and all bits in the gaps
* between bit ranges [36:27] and [21:13].
*
* The value REV_F_F1Xh_DCS_NOTUSED_BITS represents bits [26:22] and [12:0],
* which are all bits in the above-mentioned gaps.
*/
static void amd64_set_dct_base_and_mask(struct amd64_pvt *pvt)
{
if (pvt->ext_model >= OPTERON_CPU_REV_F) {
pvt->dcsb_base = REV_F_F1Xh_DCSB_BASE_BITS;
pvt->dcsm_mask = REV_F_F1Xh_DCSM_MASK_BITS;
pvt->dcs_mask_notused = REV_F_F1Xh_DCS_NOTUSED_BITS;
pvt->dcs_shift = REV_F_F1Xh_DCS_SHIFT;
switch (boot_cpu_data.x86) {
case 0xf:
pvt->num_dcsm = REV_F_DCSM_COUNT;
break;
case 0x10:
pvt->num_dcsm = F10_DCSM_COUNT;
break;
case 0x11:
pvt->num_dcsm = F11_DCSM_COUNT;
break;
default:
amd64_printk(KERN_ERR, "Unsupported family!\n");
break;
}
} else {
pvt->dcsb_base = REV_E_DCSB_BASE_BITS;
pvt->dcsm_mask = REV_E_DCSM_MASK_BITS;
pvt->dcs_mask_notused = REV_E_DCS_NOTUSED_BITS;
pvt->dcs_shift = REV_E_DCS_SHIFT;
pvt->num_dcsm = REV_E_DCSM_COUNT;
}
}
/*
* Function 2 Offset F10_DCSB0; read in the DCS Base and DCS Mask hw registers
*/
static void amd64_read_dct_base_mask(struct amd64_pvt *pvt)
{
int cs, reg, err = 0;
amd64_set_dct_base_and_mask(pvt);
for (cs = 0; cs < CHIPSELECT_COUNT; cs++) {
reg = K8_DCSB0 + (cs * 4);
err = pci_read_config_dword(pvt->dram_f2_ctl, reg,
&pvt->dcsb0[cs]);
if (unlikely(err))
debugf0("Reading K8_DCSB0[%d] failed\n", cs);
else
debugf0(" DCSB0[%d]=0x%08x reg: F2x%x\n",
cs, pvt->dcsb0[cs], reg);
/* If DCT are NOT ganged, then read in DCT1's base */
if (boot_cpu_data.x86 >= 0x10 && !dct_ganging_enabled(pvt)) {
reg = F10_DCSB1 + (cs * 4);
err = pci_read_config_dword(pvt->dram_f2_ctl, reg,
&pvt->dcsb1[cs]);
if (unlikely(err))
debugf0("Reading F10_DCSB1[%d] failed\n", cs);
else
debugf0(" DCSB1[%d]=0x%08x reg: F2x%x\n",
cs, pvt->dcsb1[cs], reg);
} else {
pvt->dcsb1[cs] = 0;
}
}
for (cs = 0; cs < pvt->num_dcsm; cs++) {
reg = K8_DCSB0 + (cs * 4);
err = pci_read_config_dword(pvt->dram_f2_ctl, reg,
&pvt->dcsm0[cs]);
if (unlikely(err))
debugf0("Reading K8_DCSM0 failed\n");
else
debugf0(" DCSM0[%d]=0x%08x reg: F2x%x\n",
cs, pvt->dcsm0[cs], reg);
/* If DCT are NOT ganged, then read in DCT1's mask */
if (boot_cpu_data.x86 >= 0x10 && !dct_ganging_enabled(pvt)) {
reg = F10_DCSM1 + (cs * 4);
err = pci_read_config_dword(pvt->dram_f2_ctl, reg,
&pvt->dcsm1[cs]);
if (unlikely(err))
debugf0("Reading F10_DCSM1[%d] failed\n", cs);
else
debugf0(" DCSM1[%d]=0x%08x reg: F2x%x\n",
cs, pvt->dcsm1[cs], reg);
} else
pvt->dcsm1[cs] = 0;
}
}
static enum mem_type amd64_determine_memory_type(struct amd64_pvt *pvt)
{
enum mem_type type;
if (boot_cpu_data.x86 >= 0x10 || pvt->ext_model >= OPTERON_CPU_REV_F) {
/* Rev F and later */
type = (pvt->dclr0 & BIT(16)) ? MEM_DDR2 : MEM_RDDR2;
} else {
/* Rev E and earlier */
type = (pvt->dclr0 & BIT(18)) ? MEM_DDR : MEM_RDDR;
}
debugf1(" Memory type is: %s\n",
(type == MEM_DDR2) ? "MEM_DDR2" :
(type == MEM_RDDR2) ? "MEM_RDDR2" :
(type == MEM_DDR) ? "MEM_DDR" : "MEM_RDDR");
return type;
}
/*
* Read the DRAM Configuration Low register. It differs between CG, D & E revs
* and the later RevF memory controllers (DDR vs DDR2)
*
* Return:
* number of memory channels in operation
* Pass back:
* contents of the DCL0_LOW register
*/
static int k8_early_channel_count(struct amd64_pvt *pvt)
{
int flag, err = 0;
err = pci_read_config_dword(pvt->dram_f2_ctl, F10_DCLR_0, &pvt->dclr0);
if (err)
return err;
if ((boot_cpu_data.x86_model >> 4) >= OPTERON_CPU_REV_F) {
/* RevF (NPT) and later */
flag = pvt->dclr0 & F10_WIDTH_128;
} else {
/* RevE and earlier */
flag = pvt->dclr0 & REVE_WIDTH_128;
}
/* not used */
pvt->dclr1 = 0;
return (flag) ? 2 : 1;
}
/* extract the ERROR ADDRESS for the K8 CPUs */
static u64 k8_get_error_address(struct mem_ctl_info *mci,
struct amd64_error_info_regs *info)
{
return (((u64) (info->nbeah & 0xff)) << 32) +
(info->nbeal & ~0x03);
}
/*
* Read the Base and Limit registers for K8 based Memory controllers; extract
* fields from the 'raw' reg into separate data fields
*
* Isolates: BASE, LIMIT, IntlvEn, IntlvSel, RW_EN
*/
static void k8_read_dram_base_limit(struct amd64_pvt *pvt, int dram)
{
u32 low;
u32 off = dram << 3; /* 8 bytes between DRAM entries */
int err;
err = pci_read_config_dword(pvt->addr_f1_ctl,
K8_DRAM_BASE_LOW + off, &low);
if (err)
debugf0("Reading K8_DRAM_BASE_LOW failed\n");
/* Extract parts into separate data entries */
pvt->dram_base[dram] = ((u64) low & 0xFFFF0000) << 8;
pvt->dram_IntlvEn[dram] = (low >> 8) & 0x7;
pvt->dram_rw_en[dram] = (low & 0x3);
err = pci_read_config_dword(pvt->addr_f1_ctl,
K8_DRAM_LIMIT_LOW + off, &low);
if (err)
debugf0("Reading K8_DRAM_LIMIT_LOW failed\n");
/*
* Extract parts into separate data entries. Limit is the HIGHEST memory
* location of the region, so lower 24 bits need to be all ones
*/
pvt->dram_limit[dram] = (((u64) low & 0xFFFF0000) << 8) | 0x00FFFFFF;
pvt->dram_IntlvSel[dram] = (low >> 8) & 0x7;
pvt->dram_DstNode[dram] = (low & 0x7);
}
static void k8_map_sysaddr_to_csrow(struct mem_ctl_info *mci,
struct amd64_error_info_regs *info,
u64 SystemAddress)
{
struct mem_ctl_info *src_mci;
unsigned short syndrome;
int channel, csrow;
u32 page, offset;
/* Extract the syndrome parts and form a 16-bit syndrome */
syndrome = EXTRACT_HIGH_SYNDROME(info->nbsl) << 8;
syndrome |= EXTRACT_LOW_SYNDROME(info->nbsh);
/* CHIPKILL enabled */
if (info->nbcfg & K8_NBCFG_CHIPKILL) {
channel = get_channel_from_ecc_syndrome(syndrome);
if (channel < 0) {
/*
* Syndrome didn't map, so we don't know which of the
* 2 DIMMs is in error. So we need to ID 'both' of them
* as suspect.
*/
amd64_mc_printk(mci, KERN_WARNING,
"unknown syndrome 0x%x - possible error "
"reporting race\n", syndrome);
edac_mc_handle_ce_no_info(mci, EDAC_MOD_STR);
return;
}
} else {
/*
* non-chipkill ecc mode
*
* The k8 documentation is unclear about how to determine the
* channel number when using non-chipkill memory. This method
* was obtained from email communication with someone at AMD.
* (Wish the email was placed in this comment - norsk)
*/
channel = ((SystemAddress & BIT(3)) != 0);
}
/*
* Find out which node the error address belongs to. This may be
* different from the node that detected the error.
*/
src_mci = find_mc_by_sys_addr(mci, SystemAddress);
if (src_mci) {
amd64_mc_printk(mci, KERN_ERR,
"failed to map error address 0x%lx to a node\n",
(unsigned long)SystemAddress);
edac_mc_handle_ce_no_info(mci, EDAC_MOD_STR);
return;
}
/* Now map the SystemAddress to a CSROW */
csrow = sys_addr_to_csrow(src_mci, SystemAddress);
if (csrow < 0) {
edac_mc_handle_ce_no_info(src_mci, EDAC_MOD_STR);
} else {
error_address_to_page_and_offset(SystemAddress, &page, &offset);
edac_mc_handle_ce(src_mci, page, offset, syndrome, csrow,
channel, EDAC_MOD_STR);
}
}
/*
* determrine the number of PAGES in for this DIMM's size based on its DRAM
* Address Mapping.
*
* First step is to calc the number of bits to shift a value of 1 left to
* indicate show many pages. Start with the DBAM value as the starting bits,
* then proceed to adjust those shift bits, based on CPU rev and the table.
* See BKDG on the DBAM
*/
static int k8_dbam_map_to_pages(struct amd64_pvt *pvt, int dram_map)
{
int nr_pages;
if (pvt->ext_model >= OPTERON_CPU_REV_F) {
nr_pages = 1 << (revf_quad_ddr2_shift[dram_map] - PAGE_SHIFT);
} else {
/*
* RevE and less section; this line is tricky. It collapses the
* table used by RevD and later to one that matches revisions CG
* and earlier.
*/
dram_map -= (pvt->ext_model >= OPTERON_CPU_REV_D) ?
(dram_map > 8 ? 4 : (dram_map > 5 ?
3 : (dram_map > 2 ? 1 : 0))) : 0;
/* 25 shift is 32MiB minimum DIMM size in RevE and prior */
nr_pages = 1 << (dram_map + 25 - PAGE_SHIFT);
}
return nr_pages;
}
/*
* Get the number of DCT channels in use.
*
* Return:
* number of Memory Channels in operation
* Pass back:
* contents of the DCL0_LOW register
*/
static int f10_early_channel_count(struct amd64_pvt *pvt)
{
int err = 0, channels = 0;
u32 dbam;
err = pci_read_config_dword(pvt->dram_f2_ctl, F10_DCLR_0, &pvt->dclr0);
if (err)
goto err_reg;
err = pci_read_config_dword(pvt->dram_f2_ctl, F10_DCLR_1, &pvt->dclr1);
if (err)
goto err_reg;
/* If we are in 128 bit mode, then we are using 2 channels */
if (pvt->dclr0 & F10_WIDTH_128) {
debugf0("Data WIDTH is 128 bits - 2 channels\n");
channels = 2;
return channels;
}
/*
* Need to check if in UN-ganged mode: In such, there are 2 channels,
* but they are NOT in 128 bit mode and thus the above 'dcl0' status bit
* will be OFF.
*
* Need to check DCT0[0] and DCT1[0] to see if only one of them has
* their CSEnable bit on. If so, then SINGLE DIMM case.
*/
debugf0("Data WIDTH is NOT 128 bits - need more decoding\n");
/*
* Check DRAM Bank Address Mapping values for each DIMM to see if there
* is more than just one DIMM present in unganged mode. Need to check
* both controllers since DIMMs can be placed in either one.
*/
channels = 0;
err = pci_read_config_dword(pvt->dram_f2_ctl, DBAM0, &dbam);
if (err)
goto err_reg;
if (DBAM_DIMM(0, dbam) > 0)
channels++;
if (DBAM_DIMM(1, dbam) > 0)
channels++;
if (DBAM_DIMM(2, dbam) > 0)
channels++;
if (DBAM_DIMM(3, dbam) > 0)
channels++;
/* If more than 2 DIMMs are present, then we have 2 channels */
if (channels > 2)
channels = 2;
else if (channels == 0) {
/* No DIMMs on DCT0, so look at DCT1 */
err = pci_read_config_dword(pvt->dram_f2_ctl, DBAM1, &dbam);
if (err)
goto err_reg;
if (DBAM_DIMM(0, dbam) > 0)
channels++;
if (DBAM_DIMM(1, dbam) > 0)
channels++;
if (DBAM_DIMM(2, dbam) > 0)
channels++;
if (DBAM_DIMM(3, dbam) > 0)
channels++;
if (channels > 2)
channels = 2;
}
/* If we found ALL 0 values, then assume just ONE DIMM-ONE Channel */
if (channels == 0)
channels = 1;
debugf0("DIMM count= %d\n", channels);
return channels;
err_reg:
return -1;
}
static int f10_dbam_map_to_pages(struct amd64_pvt *pvt, int dram_map)
{
return 1 << (revf_quad_ddr2_shift[dram_map] - PAGE_SHIFT);
}
/* Enable extended configuration access via 0xCF8 feature */
static void amd64_setup(struct amd64_pvt *pvt)
{
u32 reg;
pci_read_config_dword(pvt->misc_f3_ctl, F10_NB_CFG_HIGH, &reg);
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->misc_f3_ctl, F10_NB_CFG_HIGH, reg);
}
/* Restore the extended configuration access via 0xCF8 feature */
static void amd64_teardown(struct amd64_pvt *pvt)
{
u32 reg;
pci_read_config_dword(pvt->misc_f3_ctl, F10_NB_CFG_HIGH, &reg);
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->misc_f3_ctl, F10_NB_CFG_HIGH, reg);
}
static u64 f10_get_error_address(struct mem_ctl_info *mci,
struct amd64_error_info_regs *info)
{
return (((u64) (info->nbeah & 0xffff)) << 32) +
(info->nbeal & ~0x01);
}
/*
* Read the Base and Limit registers for F10 based Memory controllers. Extract
* fields from the 'raw' reg into separate data fields.
*
* Isolates: BASE, LIMIT, IntlvEn, IntlvSel, RW_EN.
*/
static void f10_read_dram_base_limit(struct amd64_pvt *pvt, int dram)
{
u32 high_offset, low_offset, high_base, low_base, high_limit, low_limit;
low_offset = K8_DRAM_BASE_LOW + (dram << 3);
high_offset = F10_DRAM_BASE_HIGH + (dram << 3);
/* read the 'raw' DRAM BASE Address register */
pci_read_config_dword(pvt->addr_f1_ctl, low_offset, &low_base);
/* Read from the ECS data register */
pci_read_config_dword(pvt->addr_f1_ctl, high_offset, &high_base);
/* Extract parts into separate data entries */
pvt->dram_rw_en[dram] = (low_base & 0x3);
if (pvt->dram_rw_en[dram] == 0)
return;
pvt->dram_IntlvEn[dram] = (low_base >> 8) & 0x7;
pvt->dram_base[dram] = (((((u64) high_base & 0x000000FF) << 32) |
((u64) low_base & 0xFFFF0000))) << 8;
low_offset = K8_DRAM_LIMIT_LOW + (dram << 3);
high_offset = F10_DRAM_LIMIT_HIGH + (dram << 3);
/* read the 'raw' LIMIT registers */
pci_read_config_dword(pvt->addr_f1_ctl, low_offset, &low_limit);
/* Read from the ECS data register for the HIGH portion */
pci_read_config_dword(pvt->addr_f1_ctl, high_offset, &high_limit);
debugf0(" HW Regs: BASE=0x%08x-%08x LIMIT= 0x%08x-%08x\n",
high_base, low_base, high_limit, low_limit);
pvt->dram_DstNode[dram] = (low_limit & 0x7);
pvt->dram_IntlvSel[dram] = (low_limit >> 8) & 0x7;
/*
* Extract address values and form a LIMIT address. Limit is the HIGHEST
* memory location of the region, so low 24 bits need to be all ones.
*/
low_limit |= 0x0000FFFF;
pvt->dram_limit[dram] =
((((u64) high_limit << 32) + (u64) low_limit) << 8) | (0xFF);
}
static void f10_read_dram_ctl_register(struct amd64_pvt *pvt)
{
int err = 0;
err = pci_read_config_dword(pvt->dram_f2_ctl, F10_DCTL_SEL_LOW,
&pvt->dram_ctl_select_low);
if (err) {
debugf0("Reading F10_DCTL_SEL_LOW failed\n");
} else {
debugf0("DRAM_DCTL_SEL_LOW=0x%x DctSelBaseAddr=0x%x\n",
pvt->dram_ctl_select_low, dct_sel_baseaddr(pvt));
debugf0(" DRAM DCTs are=%s DRAM Is=%s DRAM-Ctl-"
"sel-hi-range=%s\n",
(dct_ganging_enabled(pvt) ? "GANGED" : "NOT GANGED"),
(dct_dram_enabled(pvt) ? "Enabled" : "Disabled"),
(dct_high_range_enabled(pvt) ? "Enabled" : "Disabled"));
debugf0(" DctDatIntLv=%s MemCleared=%s DctSelIntLvAddr=0x%x\n",
(dct_data_intlv_enabled(pvt) ? "Enabled" : "Disabled"),
(dct_memory_cleared(pvt) ? "True " : "False "),
dct_sel_interleave_addr(pvt));
}
err = pci_read_config_dword(pvt->dram_f2_ctl, F10_DCTL_SEL_HIGH,
&pvt->dram_ctl_select_high);
if (err)
debugf0("Reading F10_DCTL_SEL_HIGH failed\n");
}
/*
* determine channel based on the interleaving mode: F10h BKDG, 2.8.9 Memory
* Interleaving Modes.
*/
static u32 f10_determine_channel(struct amd64_pvt *pvt, u64 sys_addr,
int hi_range_sel, u32 intlv_en)
{
u32 cs, temp, dct_sel_high = (pvt->dram_ctl_select_low >> 1) & 1;
if (dct_ganging_enabled(pvt))
cs = 0;
else if (hi_range_sel)
cs = dct_sel_high;
else if (dct_interleave_enabled(pvt)) {
/*
* see F2x110[DctSelIntLvAddr] - channel interleave mode
*/
if (dct_sel_interleave_addr(pvt) == 0)
cs = sys_addr >> 6 & 1;
else if ((dct_sel_interleave_addr(pvt) >> 1) & 1) {
temp = hweight_long((u32) ((sys_addr >> 16) & 0x1F)) % 2;
if (dct_sel_interleave_addr(pvt) & 1)
cs = (sys_addr >> 9 & 1) ^ temp;
else
cs = (sys_addr >> 6 & 1) ^ temp;
} else if (intlv_en & 4)
cs = sys_addr >> 15 & 1;
else if (intlv_en & 2)
cs = sys_addr >> 14 & 1;
else if (intlv_en & 1)
cs = sys_addr >> 13 & 1;
else
cs = sys_addr >> 12 & 1;
} else if (dct_high_range_enabled(pvt) && !dct_ganging_enabled(pvt))
cs = ~dct_sel_high & 1;
else
cs = 0;
return cs;
}
static inline u32 f10_map_intlv_en_to_shift(u32 intlv_en)
{
if (intlv_en == 1)
return 1;
else if (intlv_en == 3)
return 2;
else if (intlv_en == 7)
return 3;
return 0;
}
/* See F10h BKDG, 2.8.10.2 DctSelBaseOffset Programming */
static inline u64 f10_get_base_addr_offset(u64 sys_addr, int hi_range_sel,
u32 dct_sel_base_addr,
u64 dct_sel_base_off,
u32 hole_valid, u32 hole_off,
u64 dram_base)
{
u64 chan_off;
if (hi_range_sel) {
if (!(dct_sel_base_addr & 0xFFFFF800) &&
hole_valid && (sys_addr >= 0x100000000ULL))
chan_off = hole_off << 16;
else
chan_off = dct_sel_base_off;
} else {
if (hole_valid && (sys_addr >= 0x100000000ULL))
chan_off = hole_off << 16;
else
chan_off = dram_base & 0xFFFFF8000000ULL;
}
return (sys_addr & 0x0000FFFFFFFFFFC0ULL) -
(chan_off & 0x0000FFFFFF800000ULL);
}
/* Hack for the time being - Can we get this from BIOS?? */
#define CH0SPARE_RANK 0
#define CH1SPARE_RANK 1
/*
* checks if the csrow passed in is marked as SPARED, if so returns the new
* spare row
*/
static inline int f10_process_possible_spare(int csrow,
u32 cs, struct amd64_pvt *pvt)
{
u32 swap_done;
u32 bad_dram_cs;
/* Depending on channel, isolate respective SPARING info */
if (cs) {
swap_done = F10_ONLINE_SPARE_SWAPDONE1(pvt->online_spare);
bad_dram_cs = F10_ONLINE_SPARE_BADDRAM_CS1(pvt->online_spare);
if (swap_done && (csrow == bad_dram_cs))
csrow = CH1SPARE_RANK;
} else {
swap_done = F10_ONLINE_SPARE_SWAPDONE0(pvt->online_spare);
bad_dram_cs = F10_ONLINE_SPARE_BADDRAM_CS0(pvt->online_spare);
if (swap_done && (csrow == bad_dram_cs))
csrow = CH0SPARE_RANK;
}
return csrow;
}
/*
* Iterate over the DRAM DCT "base" and "mask" registers looking for a
* SystemAddr match on the specified 'ChannelSelect' and 'NodeID'
*
* Return:
* -EINVAL: NOT FOUND
* 0..csrow = Chip-Select Row
*/
static int f10_lookup_addr_in_dct(u32 in_addr, u32 nid, u32 cs)
{
struct mem_ctl_info *mci;
struct amd64_pvt *pvt;
u32 cs_base, cs_mask;
int cs_found = -EINVAL;
int csrow;
mci = mci_lookup[nid];
if (!mci)
return cs_found;
pvt = mci->pvt_info;
debugf1("InputAddr=0x%x channelselect=%d\n", in_addr, cs);
for (csrow = 0; csrow < CHIPSELECT_COUNT; csrow++) {
cs_base = amd64_get_dct_base(pvt, cs, csrow);
if (!(cs_base & K8_DCSB_CS_ENABLE))
continue;
/*
* We have an ENABLED CSROW, Isolate just the MASK bits of the
* target: [28:19] and [13:5], which map to [36:27] and [21:13]
* of the actual address.
*/
cs_base &= REV_F_F1Xh_DCSB_BASE_BITS;
/*
* Get the DCT Mask, and ENABLE the reserved bits: [18:16] and
* [4:0] to become ON. Then mask off bits [28:0] ([36:8])
*/
cs_mask = amd64_get_dct_mask(pvt, cs, csrow);
debugf1(" CSROW=%d CSBase=0x%x RAW CSMask=0x%x\n",
csrow, cs_base, cs_mask);
cs_mask = (cs_mask | 0x0007C01F) & 0x1FFFFFFF;
debugf1(" Final CSMask=0x%x\n", cs_mask);
debugf1(" (InputAddr & ~CSMask)=0x%x "
"(CSBase & ~CSMask)=0x%x\n",
(in_addr & ~cs_mask), (cs_base & ~cs_mask));
if ((in_addr & ~cs_mask) == (cs_base & ~cs_mask)) {
cs_found = f10_process_possible_spare(csrow, cs, pvt);
debugf1(" MATCH csrow=%d\n", cs_found);
break;
}
}
return cs_found;
}
/* For a given @dram_range, check if @sys_addr falls within it. */
static int f10_match_to_this_node(struct amd64_pvt *pvt, int dram_range,
u64 sys_addr, int *nid, int *chan_sel)
{
int node_id, cs_found = -EINVAL, high_range = 0;
u32 intlv_en, intlv_sel, intlv_shift, hole_off;
u32 hole_valid, tmp, dct_sel_base, channel;
u64 dram_base, chan_addr, dct_sel_base_off;
dram_base = pvt->dram_base[dram_range];
intlv_en = pvt->dram_IntlvEn[dram_range];
node_id = pvt->dram_DstNode[dram_range];
intlv_sel = pvt->dram_IntlvSel[dram_range];
debugf1("(dram=%d) Base=0x%llx SystemAddr= 0x%llx Limit=0x%llx\n",
dram_range, dram_base, sys_addr, pvt->dram_limit[dram_range]);
/*
* This assumes that one node's DHAR is the same as all the other
* nodes' DHAR.
*/
hole_off = (pvt->dhar & 0x0000FF80);
hole_valid = (pvt->dhar & 0x1);
dct_sel_base_off = (pvt->dram_ctl_select_high & 0xFFFFFC00) << 16;
debugf1(" HoleOffset=0x%x HoleValid=0x%x IntlvSel=0x%x\n",
hole_off, hole_valid, intlv_sel);
if (intlv_en ||
(intlv_sel != ((sys_addr >> 12) & intlv_en)))
return -EINVAL;
dct_sel_base = dct_sel_baseaddr(pvt);
/*
* check whether addresses >= DctSelBaseAddr[47:27] are to be used to
* select between DCT0 and DCT1.
*/
if (dct_high_range_enabled(pvt) &&
!dct_ganging_enabled(pvt) &&
((sys_addr >> 27) >= (dct_sel_base >> 11)))
high_range = 1;
channel = f10_determine_channel(pvt, sys_addr, high_range, intlv_en);
chan_addr = f10_get_base_addr_offset(sys_addr, high_range, dct_sel_base,
dct_sel_base_off, hole_valid,
hole_off, dram_base);
intlv_shift = f10_map_intlv_en_to_shift(intlv_en);
/* remove Node ID (in case of memory interleaving) */
tmp = chan_addr & 0xFC0;
chan_addr = ((chan_addr >> intlv_shift) & 0xFFFFFFFFF000ULL) | tmp;
/* remove channel interleave and hash */
if (dct_interleave_enabled(pvt) &&
!dct_high_range_enabled(pvt) &&
!dct_ganging_enabled(pvt)) {
if (dct_sel_interleave_addr(pvt) != 1)
chan_addr = (chan_addr >> 1) & 0xFFFFFFFFFFFFFFC0ULL;
else {
tmp = chan_addr & 0xFC0;
chan_addr = ((chan_addr & 0xFFFFFFFFFFFFC000ULL) >> 1)
| tmp;
}
}
debugf1(" (ChannelAddrLong=0x%llx) >> 8 becomes InputAddr=0x%x\n",
chan_addr, (u32)(chan_addr >> 8));
cs_found = f10_lookup_addr_in_dct(chan_addr >> 8, node_id, channel);
if (cs_found >= 0) {
*nid = node_id;
*chan_sel = channel;
}
return cs_found;
}
static int f10_translate_sysaddr_to_cs(struct amd64_pvt *pvt, u64 sys_addr,
int *node, int *chan_sel)
{
int dram_range, cs_found = -EINVAL;
u64 dram_base, dram_limit;
for (dram_range = 0; dram_range < DRAM_REG_COUNT; dram_range++) {
if (!pvt->dram_rw_en[dram_range])
continue;
dram_base = pvt->dram_base[dram_range];
dram_limit = pvt->dram_limit[dram_range];
if ((dram_base <= sys_addr) && (sys_addr <= dram_limit)) {
cs_found = f10_match_to_this_node(pvt, dram_range,
sys_addr, node,
chan_sel);
if (cs_found >= 0)
break;
}
}
return cs_found;
}
/*
* This the F10h reference code from AMD to map a @sys_addr to NodeID,
* CSROW, Channel.
*
* The @sys_addr is usually an error address received from the hardware.
*/
static void f10_map_sysaddr_to_csrow(struct mem_ctl_info *mci,
struct amd64_error_info_regs *info,
u64 sys_addr)
{
struct amd64_pvt *pvt = mci->pvt_info;
u32 page, offset;
unsigned short syndrome;
int nid, csrow, chan = 0;
csrow = f10_translate_sysaddr_to_cs(pvt, sys_addr, &nid, &chan);
if (csrow >= 0) {
error_address_to_page_and_offset(sys_addr, &page, &offset);
syndrome = EXTRACT_HIGH_SYNDROME(info->nbsl) << 8;
syndrome |= EXTRACT_LOW_SYNDROME(info->nbsh);
/*
* Is CHIPKILL on? If so, then we can attempt to use the
* syndrome to isolate which channel the error was on.
*/
if (pvt->nbcfg & K8_NBCFG_CHIPKILL)
chan = get_channel_from_ecc_syndrome(syndrome);
if (chan >= 0) {
edac_mc_handle_ce(mci, page, offset, syndrome,
csrow, chan, EDAC_MOD_STR);
} else {
/*
* Channel unknown, report all channels on this
* CSROW as failed.
*/
for (chan = 0; chan < mci->csrows[csrow].nr_channels;
chan++) {
edac_mc_handle_ce(mci, page, offset,
syndrome,
csrow, chan,
EDAC_MOD_STR);
}
}
} else {
edac_mc_handle_ce_no_info(mci, EDAC_MOD_STR);
}
}
/*
* Input (@index) is the DBAM DIMM value (1 of 4) used as an index into a shift
* table (revf_quad_ddr2_shift) which starts at 128MB DIMM size. Index of 0
* indicates an empty DIMM slot, as reported by Hardware on empty slots.
*
* Normalize to 128MB by subracting 27 bit shift.
*/
static int map_dbam_to_csrow_size(int index)
{
int mega_bytes = 0;
if (index > 0 && index <= DBAM_MAX_VALUE)
mega_bytes = ((128 << (revf_quad_ddr2_shift[index]-27)));
return mega_bytes;
}
/*
* debug routine to display the memory sizes of a DIMM (ganged or not) and it
* CSROWs as well
*/
static void f10_debug_display_dimm_sizes(int ctrl, struct amd64_pvt *pvt,
int ganged)
{
int dimm, size0, size1;
u32 dbam;
u32 *dcsb;
debugf1(" dbam%d: 0x%8.08x CSROW is %s\n", ctrl,
ctrl ? pvt->dbam1 : pvt->dbam0,
ganged ? "GANGED - dbam1 not used" : "NON-GANGED");
dbam = ctrl ? pvt->dbam1 : pvt->dbam0;
dcsb = ctrl ? pvt->dcsb1 : pvt->dcsb0;
/* Dump memory sizes for DIMM and its CSROWs */
for (dimm = 0; dimm < 4; dimm++) {
size0 = 0;
if (dcsb[dimm*2] & K8_DCSB_CS_ENABLE)
size0 = map_dbam_to_csrow_size(DBAM_DIMM(dimm, dbam));
size1 = 0;
if (dcsb[dimm*2 + 1] & K8_DCSB_CS_ENABLE)
size1 = map_dbam_to_csrow_size(DBAM_DIMM(dimm, dbam));
debugf1(" CTRL-%d DIMM-%d=%5dMB CSROW-%d=%5dMB "
"CSROW-%d=%5dMB\n",
ctrl,
dimm,
size0 + size1,
dimm * 2,
size0,
dimm * 2 + 1,
size1);
}
}
/*
* Very early hardware probe on pci_probe thread to determine if this module
* supports the hardware.
*
* Return:
* 0 for OK
* 1 for error
*/
static int f10_probe_valid_hardware(struct amd64_pvt *pvt)
{
int ret = 0;
/*
* If we are on a DDR3 machine, we don't know yet if
* we support that properly at this time
*/
if ((pvt->dchr0 & F10_DCHR_Ddr3Mode) ||
(pvt->dchr1 & F10_DCHR_Ddr3Mode)) {
amd64_printk(KERN_WARNING,
"%s() This machine is running with DDR3 memory. "
"This is not currently supported. "
"DCHR0=0x%x DCHR1=0x%x\n",
__func__, pvt->dchr0, pvt->dchr1);
amd64_printk(KERN_WARNING,
" Contact '%s' module MAINTAINER to help add"
" support.\n",
EDAC_MOD_STR);
ret = 1;
}
return ret;
}
/*
* There currently are 3 types type of MC devices for AMD Athlon/Opterons
* (as per PCI DEVICE_IDs):
*
* Family K8: That is the Athlon64 and Opteron CPUs. They all have the same PCI
* DEVICE ID, even though there is differences between the different Revisions
* (CG,D,E,F).
*
* Family F10h and F11h.
*
*/
static struct amd64_family_type amd64_family_types[] = {
[K8_CPUS] = {
.ctl_name = "RevF",
.addr_f1_ctl = PCI_DEVICE_ID_AMD_K8_NB_ADDRMAP,
.misc_f3_ctl = PCI_DEVICE_ID_AMD_K8_NB_MISC,
.ops = {
.early_channel_count = k8_early_channel_count,
.get_error_address = k8_get_error_address,
.read_dram_base_limit = k8_read_dram_base_limit,
.map_sysaddr_to_csrow = k8_map_sysaddr_to_csrow,
.dbam_map_to_pages = k8_dbam_map_to_pages,
}
},
[F10_CPUS] = {
.ctl_name = "Family 10h",
.addr_f1_ctl = PCI_DEVICE_ID_AMD_10H_NB_MAP,
.misc_f3_ctl = PCI_DEVICE_ID_AMD_10H_NB_MISC,
.ops = {
.probe_valid_hardware = f10_probe_valid_hardware,
.early_channel_count = f10_early_channel_count,
.get_error_address = f10_get_error_address,
.read_dram_base_limit = f10_read_dram_base_limit,
.read_dram_ctl_register = f10_read_dram_ctl_register,
.map_sysaddr_to_csrow = f10_map_sysaddr_to_csrow,
.dbam_map_to_pages = f10_dbam_map_to_pages,
}
},
[F11_CPUS] = {
.ctl_name = "Family 11h",
.addr_f1_ctl = PCI_DEVICE_ID_AMD_11H_NB_MAP,
.misc_f3_ctl = PCI_DEVICE_ID_AMD_11H_NB_MISC,
.ops = {
.probe_valid_hardware = f10_probe_valid_hardware,
.early_channel_count = f10_early_channel_count,
.get_error_address = f10_get_error_address,
.read_dram_base_limit = f10_read_dram_base_limit,
.read_dram_ctl_register = f10_read_dram_ctl_register,
.map_sysaddr_to_csrow = f10_map_sysaddr_to_csrow,
.dbam_map_to_pages = f10_dbam_map_to_pages,
}
},
};
static struct pci_dev *pci_get_related_function(unsigned int vendor,
unsigned int device,
struct pci_dev *related)
{
struct pci_dev *dev = NULL;
dev = pci_get_device(vendor, device, dev);
while (dev) {
if ((dev->bus->number == related->bus->number) &&
(PCI_SLOT(dev->devfn) == PCI_SLOT(related->devfn)))
break;
dev = pci_get_device(vendor, device, dev);
}
return dev;
}
/*
* syndrome mapping table for ECC ChipKill devices
*
* The comment in each row is the token (nibble) number that is in error.
* The least significant nibble of the syndrome is the mask for the bits
* that are in error (need to be toggled) for the particular nibble.
*
* Each row contains 16 entries.
* The first entry (0th) is the channel number for that row of syndromes.
* The remaining 15 entries are the syndromes for the respective Error
* bit mask index.
*
* 1st index entry is 0x0001 mask, indicating that the rightmost bit is the
* bit in error.
* The 2nd index entry is 0x0010 that the second bit is damaged.
* The 3rd index entry is 0x0011 indicating that the rightmost 2 bits
* are damaged.
* Thus so on until index 15, 0x1111, whose entry has the syndrome
* indicating that all 4 bits are damaged.
*
* A search is performed on this table looking for a given syndrome.
*
* See the AMD documentation for ECC syndromes. This ECC table is valid
* across all the versions of the AMD64 processors.
*
* A fast lookup is to use the LAST four bits of the 16-bit syndrome as a
* COLUMN index, then search all ROWS of that column, looking for a match
* with the input syndrome. The ROW value will be the token number.
*
* The 0'th entry on that row, can be returned as the CHANNEL (0 or 1) of this
* error.
*/
#define NUMBER_ECC_ROWS 36
static const unsigned short ecc_chipkill_syndromes[NUMBER_ECC_ROWS][16] = {
/* Channel 0 syndromes */
{/*0*/ 0, 0xe821, 0x7c32, 0x9413, 0xbb44, 0x5365, 0xc776, 0x2f57,
0xdd88, 0x35a9, 0xa1ba, 0x499b, 0x66cc, 0x8eed, 0x1afe, 0xf2df },
{/*1*/ 0, 0x5d31, 0xa612, 0xfb23, 0x9584, 0xc8b5, 0x3396, 0x6ea7,
0xeac8, 0xb7f9, 0x4cda, 0x11eb, 0x7f4c, 0x227d, 0xd95e, 0x846f },
{/*2*/ 0, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f },
{/*3*/ 0, 0x2021, 0x3032, 0x1013, 0x4044, 0x6065, 0x7076, 0x5057,
0x8088, 0xa0a9, 0xb0ba, 0x909b, 0xc0cc, 0xe0ed, 0xf0fe, 0xd0df },
{/*4*/ 0, 0x5041, 0xa082, 0xf0c3, 0x9054, 0xc015, 0x30d6, 0x6097,
0xe0a8, 0xb0e9, 0x402a, 0x106b, 0x70fc, 0x20bd, 0xd07e, 0x803f },
{/*5*/ 0, 0xbe21, 0xd732, 0x6913, 0x2144, 0x9f65, 0xf676, 0x4857,
0x3288, 0x8ca9, 0xe5ba, 0x5b9b, 0x13cc, 0xaded, 0xc4fe, 0x7adf },
{/*6*/ 0, 0x4951, 0x8ea2, 0xc7f3, 0x5394, 0x1ac5, 0xdd36, 0x9467,
0xa1e8, 0xe8b9, 0x2f4a, 0x661b, 0xf27c, 0xbb2d, 0x7cde, 0x358f },
{/*7*/ 0, 0x74e1, 0x9872, 0xec93, 0xd6b4, 0xa255, 0x4ec6, 0x3a27,
0x6bd8, 0x1f39, 0xf3aa, 0x874b, 0xbd6c, 0xc98d, 0x251e, 0x51ff },
{/*8*/ 0, 0x15c1, 0x2a42, 0x3f83, 0xcef4, 0xdb35, 0xe4b6, 0xf177,
0x4758, 0x5299, 0x6d1a, 0x78db, 0x89ac, 0x9c6d, 0xa3ee, 0xb62f },
{/*9*/ 0, 0x3d01, 0x1602, 0x2b03, 0x8504, 0xb805, 0x9306, 0xae07,
0xca08, 0xf709, 0xdc0a, 0xe10b, 0x4f0c, 0x720d, 0x590e, 0x640f },
{/*a*/ 0, 0x9801, 0xec02, 0x7403, 0x6b04, 0xf305, 0x8706, 0x1f07,
0xbd08, 0x2509, 0x510a, 0xc90b, 0xd60c, 0x4e0d, 0x3a0e, 0xa20f },
{/*b*/ 0, 0xd131, 0x6212, 0xb323, 0x3884, 0xe9b5, 0x5a96, 0x8ba7,
0x1cc8, 0xcdf9, 0x7eda, 0xafeb, 0x244c, 0xf57d, 0x465e, 0x976f },
{/*c*/ 0, 0xe1d1, 0x7262, 0x93b3, 0xb834, 0x59e5, 0xca56, 0x2b87,
0xdc18, 0x3dc9, 0xae7a, 0x4fab, 0x542c, 0x85fd, 0x164e, 0xf79f },
{/*d*/ 0, 0x6051, 0xb0a2, 0xd0f3, 0x1094, 0x70c5, 0xa036, 0xc067,
0x20e8, 0x40b9, 0x904a, 0x601b, 0x307c, 0x502d, 0x80de, 0xe08f },
{/*e*/ 0, 0xa4c1, 0xf842, 0x5c83, 0xe6f4, 0x4235, 0x1eb6, 0xba77,
0x7b58, 0xdf99, 0x831a, 0x27db, 0x9dac, 0x396d, 0x65ee, 0xc12f },
{/*f*/ 0, 0x11c1, 0x2242, 0x3383, 0xc8f4, 0xd935, 0xeab6, 0xfb77,
0x4c58, 0x5d99, 0x6e1a, 0x7fdb, 0x84ac, 0x956d, 0xa6ee, 0xb72f },
/* Channel 1 syndromes */
{/*10*/ 1, 0x45d1, 0x8a62, 0xcfb3, 0x5e34, 0x1be5, 0xd456, 0x9187,
0xa718, 0xe2c9, 0x2d7a, 0x68ab, 0xf92c, 0xbcfd, 0x734e, 0x369f },
{/*11*/ 1, 0x63e1, 0xb172, 0xd293, 0x14b4, 0x7755, 0xa5c6, 0xc627,
0x28d8, 0x4b39, 0x99aa, 0xfa4b, 0x3c6c, 0x5f8d, 0x8d1e, 0xeeff },
{/*12*/ 1, 0xb741, 0xd982, 0x6ec3, 0x2254, 0x9515, 0xfbd6, 0x4c97,
0x33a8, 0x84e9, 0xea2a, 0x5d6b, 0x11fc, 0xa6bd, 0xc87e, 0x7f3f },
{/*13*/ 1, 0xdd41, 0x6682, 0xbbc3, 0x3554, 0xe815, 0x53d6, 0xce97,
0x1aa8, 0xc7e9, 0x7c2a, 0xa1fb, 0x2ffc, 0xf2bd, 0x497e, 0x943f },
{/*14*/ 1, 0x2bd1, 0x3d62, 0x16b3, 0x4f34, 0x64e5, 0x7256, 0x5987,
0x8518, 0xaec9, 0xb87a, 0x93ab, 0xca2c, 0xe1fd, 0xf74e, 0xdc9f },
{/*15*/ 1, 0x83c1, 0xc142, 0x4283, 0xa4f4, 0x2735, 0x65b6, 0xe677,
0xf858, 0x7b99, 0x391a, 0xbadb, 0x5cac, 0xdf6d, 0x9dee, 0x1e2f },
{/*16*/ 1, 0x8fd1, 0xc562, 0x4ab3, 0xa934, 0x26e5, 0x6c56, 0xe387,
0xfe18, 0x71c9, 0x3b7a, 0xb4ab, 0x572c, 0xd8fd, 0x924e, 0x1d9f },
{/*17*/ 1, 0x4791, 0x89e2, 0xce73, 0x5264, 0x15f5, 0xdb86, 0x9c17,
0xa3b8, 0xe429, 0x2a5a, 0x6dcb, 0xf1dc, 0xb64d, 0x783e, 0x3faf },
{/*18*/ 1, 0x5781, 0xa9c2, 0xfe43, 0x92a4, 0xc525, 0x3b66, 0x6ce7,
0xe3f8, 0xb479, 0x4a3a, 0x1dbb, 0x715c, 0x26dd, 0xd89e, 0x8f1f },
{/*19*/ 1, 0xbf41, 0xd582, 0x6ac3, 0x2954, 0x9615, 0xfcd6, 0x4397,
0x3ea8, 0x81e9, 0xeb2a, 0x546b, 0x17fc, 0xa8bd, 0xc27e, 0x7d3f },
{/*1a*/ 1, 0x9891, 0xe1e2, 0x7273, 0x6464, 0xf7f5, 0x8586, 0x1617,
0xb8b8, 0x2b29, 0x595a, 0xcacb, 0xdcdc, 0x4f4d, 0x3d3e, 0xaeaf },
{/*1b*/ 1, 0xcce1, 0x4472, 0x8893, 0xfdb4, 0x3f55, 0xb9c6, 0x7527,
0x56d8, 0x9a39, 0x12aa, 0xde4b, 0xab6c, 0x678d, 0xef1e, 0x23ff },
{/*1c*/ 1, 0xa761, 0xf9b2, 0x5ed3, 0xe214, 0x4575, 0x1ba6, 0xbcc7,
0x7328, 0xd449, 0x8a9a, 0x2dfb, 0x913c, 0x365d, 0x688e, 0xcfef },
{/*1d*/ 1, 0xff61, 0x55b2, 0xaad3, 0x7914, 0x8675, 0x2ca6, 0xd3c7,
0x9e28, 0x6149, 0xcb9a, 0x34fb, 0xe73c, 0x185d, 0xb28e, 0x4def },
{/*1e*/ 1, 0x5451, 0xa8a2, 0xfcf3, 0x9694, 0xc2c5, 0x3e36, 0x6a67,
0xebe8, 0xbfb9, 0x434a, 0x171b, 0x7d7c, 0x292d, 0xd5de, 0x818f },
{/*1f*/ 1, 0x6fc1, 0xb542, 0xda83, 0x19f4, 0x7635, 0xacb6, 0xc377,
0x2e58, 0x4199, 0x9b1a, 0xf4db, 0x37ac, 0x586d, 0x82ee, 0xed2f },
/* ECC bits are also in the set of tokens and they too can go bad
* first 2 cover channel 0, while the second 2 cover channel 1
*/
{/*20*/ 0, 0xbe01, 0xd702, 0x6903, 0x2104, 0x9f05, 0xf606, 0x4807,
0x3208, 0x8c09, 0xe50a, 0x5b0b, 0x130c, 0xad0d, 0xc40e, 0x7a0f },
{/*21*/ 0, 0x4101, 0x8202, 0xc303, 0x5804, 0x1905, 0xda06, 0x9b07,
0xac08, 0xed09, 0x2e0a, 0x6f0b, 0x640c, 0xb50d, 0x760e, 0x370f },
{/*22*/ 1, 0xc441, 0x4882, 0x8cc3, 0xf654, 0x3215, 0xbed6, 0x7a97,
0x5ba8, 0x9fe9, 0x132a, 0xd76b, 0xadfc, 0x69bd, 0xe57e, 0x213f },
{/*23*/ 1, 0x7621, 0x9b32, 0xed13, 0xda44, 0xac65, 0x4176, 0x3757,
0x6f88, 0x19a9, 0xf4ba, 0x829b, 0xb5cc, 0xc3ed, 0x2efe, 0x58df }
};
/*
* Given the syndrome argument, scan each of the channel tables for a syndrome
* match. Depending on which table it is found, return the channel number.
*/
static int get_channel_from_ecc_syndrome(unsigned short syndrome)
{
int row;
int column;
/* Determine column to scan */
column = syndrome & 0xF;
/* Scan all rows, looking for syndrome, or end of table */
for (row = 0; row < NUMBER_ECC_ROWS; row++) {
if (ecc_chipkill_syndromes[row][column] == syndrome)
return ecc_chipkill_syndromes[row][0];
}
debugf0("syndrome(%x) not found\n", syndrome);
return -1;
}
/*
* Check for valid error in the NB Status High register. If so, proceed to read
* NB Status Low, NB Address Low and NB Address High registers and store data
* into error structure.
*
* Returns:
* - 1: if hardware regs contains valid error info
* - 0: if no valid error is indicated
*/
static int amd64_get_error_info_regs(struct mem_ctl_info *mci,
struct amd64_error_info_regs *regs)
{
struct amd64_pvt *pvt;
struct pci_dev *misc_f3_ctl;
int err = 0;
pvt = mci->pvt_info;
misc_f3_ctl = pvt->misc_f3_ctl;
err = pci_read_config_dword(misc_f3_ctl, K8_NBSH, &regs->nbsh);
if (err)
goto err_reg;
if (!(regs->nbsh & K8_NBSH_VALID_BIT))
return 0;
/* valid error, read remaining error information registers */
err = pci_read_config_dword(misc_f3_ctl, K8_NBSL, &regs->nbsl);
if (err)
goto err_reg;
err = pci_read_config_dword(misc_f3_ctl, K8_NBEAL, &regs->nbeal);
if (err)
goto err_reg;
err = pci_read_config_dword(misc_f3_ctl, K8_NBEAH, &regs->nbeah);
if (err)
goto err_reg;
err = pci_read_config_dword(misc_f3_ctl, K8_NBCFG, &regs->nbcfg);
if (err)
goto err_reg;
return 1;
err_reg:
debugf0("Reading error info register failed\n");
return 0;
}
/*
* This function is called to retrieve the error data from hardware and store it
* in the info structure.
*
* Returns:
* - 1: if a valid error is found
* - 0: if no error is found
*/
static int amd64_get_error_info(struct mem_ctl_info *mci,
struct amd64_error_info_regs *info)
{
struct amd64_pvt *pvt;
struct amd64_error_info_regs regs;
pvt = mci->pvt_info;
if (!amd64_get_error_info_regs(mci, info))
return 0;
/*
* Here's the problem with the K8's EDAC reporting: There are four
* registers which report pieces of error information. They are shared
* between CEs and UEs. Furthermore, contrary to what is stated in the
* BKDG, the overflow bit is never used! Every error always updates the
* reporting registers.
*
* Can you see the race condition? All four error reporting registers
* must be read before a new error updates them! There is no way to read
* all four registers atomically. The best than can be done is to detect
* that a race has occured and then report the error without any kind of
* precision.
*
* What is still positive is that errors are still reported and thus
* problems can still be detected - just not localized because the
* syndrome and address are spread out across registers.
*
* Grrrrr!!!!! Here's hoping that AMD fixes this in some future K8 rev.
* UEs and CEs should have separate register sets with proper overflow
* bits that are used! At very least the problem can be fixed by
* honoring the ErrValid bit in 'nbsh' and not updating registers - just
* set the overflow bit - unless the current error is CE and the new
* error is UE which would be the only situation for overwriting the
* current values.
*/
regs = *info;
/* Use info from the second read - most current */
if (unlikely(!amd64_get_error_info_regs(mci, info)))
return 0;
/* clear the error bits in hardware */
pci_write_bits32(pvt->misc_f3_ctl, K8_NBSH, 0, K8_NBSH_VALID_BIT);
/* Check for the possible race condition */
if ((regs.nbsh != info->nbsh) ||
(regs.nbsl != info->nbsl) ||
(regs.nbeah != info->nbeah) ||
(regs.nbeal != info->nbeal)) {
amd64_mc_printk(mci, KERN_WARNING,
"hardware STATUS read access race condition "
"detected!\n");
return 0;
}
return 1;
}
static inline void amd64_decode_gart_tlb_error(struct mem_ctl_info *mci,
struct amd64_error_info_regs *info)
{
u32 err_code;
u32 ec_tt; /* error code transaction type (2b) */
u32 ec_ll; /* error code cache level (2b) */
err_code = EXTRACT_ERROR_CODE(info->nbsl);
ec_ll = EXTRACT_LL_CODE(err_code);
ec_tt = EXTRACT_TT_CODE(err_code);
amd64_mc_printk(mci, KERN_ERR,
"GART TLB event: transaction type(%s), "
"cache level(%s)\n", tt_msgs[ec_tt], ll_msgs[ec_ll]);
}
static inline void amd64_decode_mem_cache_error(struct mem_ctl_info *mci,
struct amd64_error_info_regs *info)
{
u32 err_code;
u32 ec_rrrr; /* error code memory transaction (4b) */
u32 ec_tt; /* error code transaction type (2b) */
u32 ec_ll; /* error code cache level (2b) */
err_code = EXTRACT_ERROR_CODE(info->nbsl);
ec_ll = EXTRACT_LL_CODE(err_code);
ec_tt = EXTRACT_TT_CODE(err_code);
ec_rrrr = EXTRACT_RRRR_CODE(err_code);
amd64_mc_printk(mci, KERN_ERR,
"cache hierarchy error: memory transaction type(%s), "
"transaction type(%s), cache level(%s)\n",
rrrr_msgs[ec_rrrr], tt_msgs[ec_tt], ll_msgs[ec_ll]);
}
/*
* Handle any Correctable Errors (CEs) that have occurred. Check for valid ERROR
* ADDRESS and process.
*/
static void amd64_handle_ce(struct mem_ctl_info *mci,
struct amd64_error_info_regs *info)
{
struct amd64_pvt *pvt = mci->pvt_info;
u64 SystemAddress;
/* Ensure that the Error Address is VALID */
if ((info->nbsh & K8_NBSH_VALID_ERROR_ADDR) == 0) {
amd64_mc_printk(mci, KERN_ERR,
"HW has no ERROR_ADDRESS available\n");
edac_mc_handle_ce_no_info(mci, EDAC_MOD_STR);
return;
}
SystemAddress = extract_error_address(mci, info);
amd64_mc_printk(mci, KERN_ERR,
"CE ERROR_ADDRESS= 0x%llx\n", SystemAddress);
pvt->ops->map_sysaddr_to_csrow(mci, info, SystemAddress);
}
/* Handle any Un-correctable Errors (UEs) */
static void amd64_handle_ue(struct mem_ctl_info *mci,
struct amd64_error_info_regs *info)
{
int csrow;
u64 SystemAddress;
u32 page, offset;
struct mem_ctl_info *log_mci, *src_mci = NULL;
log_mci = mci;
if ((info->nbsh & K8_NBSH_VALID_ERROR_ADDR) == 0) {
amd64_mc_printk(mci, KERN_CRIT,
"HW has no ERROR_ADDRESS available\n");
edac_mc_handle_ue_no_info(log_mci, EDAC_MOD_STR);
return;
}
SystemAddress = extract_error_address(mci, info);
/*
* Find out which node the error address belongs to. This may be
* different from the node that detected the error.
*/
src_mci = find_mc_by_sys_addr(mci, SystemAddress);
if (!src_mci) {
amd64_mc_printk(mci, KERN_CRIT,
"ERROR ADDRESS (0x%lx) value NOT mapped to a MC\n",
(unsigned long)SystemAddress);
edac_mc_handle_ue_no_info(log_mci, EDAC_MOD_STR);
return;
}
log_mci = src_mci;
csrow = sys_addr_to_csrow(log_mci, SystemAddress);
if (csrow < 0) {
amd64_mc_printk(mci, KERN_CRIT,
"ERROR_ADDRESS (0x%lx) value NOT mapped to 'csrow'\n",
(unsigned long)SystemAddress);
edac_mc_handle_ue_no_info(log_mci, EDAC_MOD_STR);
} else {
error_address_to_page_and_offset(SystemAddress, &page, &offset);
edac_mc_handle_ue(log_mci, page, offset, csrow, EDAC_MOD_STR);
}
}
static void amd64_decode_bus_error(struct mem_ctl_info *mci,
struct amd64_error_info_regs *info)
{
u32 err_code, ext_ec;
u32 ec_pp; /* error code participating processor (2p) */
u32 ec_to; /* error code timed out (1b) */
u32 ec_rrrr; /* error code memory transaction (4b) */
u32 ec_ii; /* error code memory or I/O (2b) */
u32 ec_ll; /* error code cache level (2b) */
ext_ec = EXTRACT_EXT_ERROR_CODE(info->nbsl);
err_code = EXTRACT_ERROR_CODE(info->nbsl);
ec_ll = EXTRACT_LL_CODE(err_code);
ec_ii = EXTRACT_II_CODE(err_code);
ec_rrrr = EXTRACT_RRRR_CODE(err_code);
ec_to = EXTRACT_TO_CODE(err_code);
ec_pp = EXTRACT_PP_CODE(err_code);
amd64_mc_printk(mci, KERN_ERR,
"BUS ERROR:\n"
" time-out(%s) mem or i/o(%s)\n"
" participating processor(%s)\n"
" memory transaction type(%s)\n"
" cache level(%s) Error Found by: %s\n",
to_msgs[ec_to],
ii_msgs[ec_ii],
pp_msgs[ec_pp],
rrrr_msgs[ec_rrrr],
ll_msgs[ec_ll],
(info->nbsh & K8_NBSH_ERR_SCRUBER) ?
"Scrubber" : "Normal Operation");
/* If this was an 'observed' error, early out */
if (ec_pp == K8_NBSL_PP_OBS)
return; /* We aren't the node involved */
/* Parse out the extended error code for ECC events */
switch (ext_ec) {
/* F10 changed to one Extended ECC error code */
case F10_NBSL_EXT_ERR_RES: /* Reserved field */
case F10_NBSL_EXT_ERR_ECC: /* F10 ECC ext err code */
break;
default:
amd64_mc_printk(mci, KERN_ERR, "NOT ECC: no special error "
"handling for this error\n");
return;
}
if (info->nbsh & K8_NBSH_CECC)
amd64_handle_ce(mci, info);
else if (info->nbsh & K8_NBSH_UECC)
amd64_handle_ue(mci, info);
/*
* If main error is CE then overflow must be CE. If main error is UE
* then overflow is unknown. We'll call the overflow a CE - if
* panic_on_ue is set then we're already panic'ed and won't arrive
* here. Else, then apparently someone doesn't think that UE's are
* catastrophic.
*/
if (info->nbsh & K8_NBSH_OVERFLOW)
edac_mc_handle_ce_no_info(mci, EDAC_MOD_STR
"Error Overflow set");
}
int amd64_process_error_info(struct mem_ctl_info *mci,
struct amd64_error_info_regs *info,
int handle_errors)
{
struct amd64_pvt *pvt;
struct amd64_error_info_regs *regs;
u32 err_code, ext_ec;
int gart_tlb_error = 0;
pvt = mci->pvt_info;
/* If caller doesn't want us to process the error, return */
if (!handle_errors)
return 1;
regs = info;
debugf1("NorthBridge ERROR: mci(0x%p)\n", mci);
debugf1(" MC node(%d) Error-Address(0x%.8x-%.8x)\n",
pvt->mc_node_id, regs->nbeah, regs->nbeal);
debugf1(" nbsh(0x%.8x) nbsl(0x%.8x)\n",
regs->nbsh, regs->nbsl);
debugf1(" Valid Error=%s Overflow=%s\n",
(regs->nbsh & K8_NBSH_VALID_BIT) ? "True" : "False",
(regs->nbsh & K8_NBSH_OVERFLOW) ? "True" : "False");
debugf1(" Err Uncorrected=%s MCA Error Reporting=%s\n",
(regs->nbsh & K8_NBSH_UNCORRECTED_ERR) ?
"True" : "False",
(regs->nbsh & K8_NBSH_ERR_ENABLE) ?
"True" : "False");
debugf1(" MiscErr Valid=%s ErrAddr Valid=%s PCC=%s\n",
(regs->nbsh & K8_NBSH_MISC_ERR_VALID) ?
"True" : "False",
(regs->nbsh & K8_NBSH_VALID_ERROR_ADDR) ?
"True" : "False",
(regs->nbsh & K8_NBSH_PCC) ?
"True" : "False");
debugf1(" CECC=%s UECC=%s Found by Scruber=%s\n",
(regs->nbsh & K8_NBSH_CECC) ?
"True" : "False",
(regs->nbsh & K8_NBSH_UECC) ?
"True" : "False",
(regs->nbsh & K8_NBSH_ERR_SCRUBER) ?
"True" : "False");
debugf1(" CORE0=%s CORE1=%s CORE2=%s CORE3=%s\n",
(regs->nbsh & K8_NBSH_CORE0) ? "True" : "False",
(regs->nbsh & K8_NBSH_CORE1) ? "True" : "False",
(regs->nbsh & K8_NBSH_CORE2) ? "True" : "False",
(regs->nbsh & K8_NBSH_CORE3) ? "True" : "False");
err_code = EXTRACT_ERROR_CODE(regs->nbsl);
/* Determine which error type:
* 1) GART errors - non-fatal, developmental events
* 2) MEMORY errors
* 3) BUS errors
* 4) Unknown error
*/
if (TEST_TLB_ERROR(err_code)) {
/*
* GART errors are intended to help graphics driver developers
* to detect bad GART PTEs. It is recommended by AMD to disable
* GART table walk error reporting by default[1] (currently
* being disabled in mce_cpu_quirks()) and according to the
* comment in mce_cpu_quirks(), such GART errors can be
* incorrectly triggered. We may see these errors anyway and
* unless requested by the user, they won't be reported.
*
* [1] section 13.10.1 on BIOS and Kernel Developers Guide for
* AMD NPT family 0Fh processors
*/
if (report_gart_errors == 0)
return 1;
/*
* Only if GART error reporting is requested should we generate
* any logs.
*/
gart_tlb_error = 1;
debugf1("GART TLB error\n");
amd64_decode_gart_tlb_error(mci, info);
} else if (TEST_MEM_ERROR(err_code)) {
debugf1("Memory/Cache error\n");
amd64_decode_mem_cache_error(mci, info);
} else if (TEST_BUS_ERROR(err_code)) {
debugf1("Bus (Link/DRAM) error\n");
amd64_decode_bus_error(mci, info);
} else {
/* shouldn't reach here! */
amd64_mc_printk(mci, KERN_WARNING,
"%s(): unknown MCE error 0x%x\n", __func__,
err_code);
}
ext_ec = EXTRACT_EXT_ERROR_CODE(regs->nbsl);
amd64_mc_printk(mci, KERN_ERR,
"ExtErr=(0x%x) %s\n", ext_ec, ext_msgs[ext_ec]);
if (((ext_ec >= F10_NBSL_EXT_ERR_CRC &&
ext_ec <= F10_NBSL_EXT_ERR_TGT) ||
(ext_ec == F10_NBSL_EXT_ERR_RMW)) &&
EXTRACT_LDT_LINK(info->nbsh)) {
amd64_mc_printk(mci, KERN_ERR,
"Error on hypertransport link: %s\n",
htlink_msgs[
EXTRACT_LDT_LINK(info->nbsh)]);
}
/*
* Check the UE bit of the NB status high register, if set generate some
* logs. If NOT a GART error, then process the event as a NO-INFO event.
* If it was a GART error, skip that process.
*/
if (regs->nbsh & K8_NBSH_UNCORRECTED_ERR) {
amd64_mc_printk(mci, KERN_CRIT, "uncorrected error\n");
if (!gart_tlb_error)
edac_mc_handle_ue_no_info(mci, "UE bit is set\n");
}
if (regs->nbsh & K8_NBSH_PCC)
amd64_mc_printk(mci, KERN_CRIT,
"PCC (processor context corrupt) set\n");
return 1;
}
EXPORT_SYMBOL_GPL(amd64_process_error_info);
/*
* The main polling 'check' function, called FROM the edac core to perform the
* error checking and if an error is encountered, error processing.
*/
static void amd64_check(struct mem_ctl_info *mci)
{
struct amd64_error_info_regs info;
if (amd64_get_error_info(mci, &info))
amd64_process_error_info(mci, &info, 1);
}
/*
* Input:
* 1) struct amd64_pvt which contains pvt->dram_f2_ctl pointer
* 2) AMD Family index value
*
* Ouput:
* Upon return of 0, the following filled in:
*
* struct pvt->addr_f1_ctl
* struct pvt->misc_f3_ctl
*
* Filled in with related device funcitions of 'dram_f2_ctl'
* These devices are "reserved" via the pci_get_device()
*
* Upon return of 1 (error status):
*
* Nothing reserved
*/
static int amd64_reserve_mc_sibling_devices(struct amd64_pvt *pvt, int mc_idx)
{
const struct amd64_family_type *amd64_dev = &amd64_family_types[mc_idx];
/* Reserve the ADDRESS MAP Device */
pvt->addr_f1_ctl = pci_get_related_function(pvt->dram_f2_ctl->vendor,
amd64_dev->addr_f1_ctl,
pvt->dram_f2_ctl);
if (!pvt->addr_f1_ctl) {
amd64_printk(KERN_ERR, "error address map device not found: "
"vendor %x device 0x%x (broken BIOS?)\n",
PCI_VENDOR_ID_AMD, amd64_dev->addr_f1_ctl);
return 1;
}
/* Reserve the MISC Device */
pvt->misc_f3_ctl = pci_get_related_function(pvt->dram_f2_ctl->vendor,
amd64_dev->misc_f3_ctl,
pvt->dram_f2_ctl);
if (!pvt->misc_f3_ctl) {
pci_dev_put(pvt->addr_f1_ctl);
pvt->addr_f1_ctl = NULL;
amd64_printk(KERN_ERR, "error miscellaneous device not found: "
"vendor %x device 0x%x (broken BIOS?)\n",
PCI_VENDOR_ID_AMD, amd64_dev->misc_f3_ctl);
return 1;
}
debugf1(" Addr Map device PCI Bus ID:\t%s\n",
pci_name(pvt->addr_f1_ctl));
debugf1(" DRAM MEM-CTL PCI Bus ID:\t%s\n",
pci_name(pvt->dram_f2_ctl));
debugf1(" Misc device PCI Bus ID:\t%s\n",
pci_name(pvt->misc_f3_ctl));
return 0;
}
static void amd64_free_mc_sibling_devices(struct amd64_pvt *pvt)
{
pci_dev_put(pvt->addr_f1_ctl);
pci_dev_put(pvt->misc_f3_ctl);
}
/*
* Retrieve the hardware registers of the memory controller (this includes the
* 'Address Map' and 'Misc' device regs)
*/
static void amd64_read_mc_registers(struct amd64_pvt *pvt)
{
u64 msr_val;
int dram, err = 0;
/*
* Retrieve TOP_MEM and TOP_MEM2; no masking off of reserved bits since
* those are Read-As-Zero
*/
rdmsrl(MSR_K8_TOP_MEM1, msr_val);
pvt->top_mem = msr_val >> 23;
debugf0(" TOP_MEM=0x%08llx\n", pvt->top_mem);
/* check first whether TOP_MEM2 is enabled */
rdmsrl(MSR_K8_SYSCFG, msr_val);
if (msr_val & (1U << 21)) {
rdmsrl(MSR_K8_TOP_MEM2, msr_val);
pvt->top_mem2 = msr_val >> 23;
debugf0(" TOP_MEM2=0x%08llx\n", pvt->top_mem2);
} else
debugf0(" TOP_MEM2 disabled.\n");
amd64_cpu_display_info(pvt);
err = pci_read_config_dword(pvt->misc_f3_ctl, K8_NBCAP, &pvt->nbcap);
if (err)
goto err_reg;
if (pvt->ops->read_dram_ctl_register)
pvt->ops->read_dram_ctl_register(pvt);
for (dram = 0; dram < DRAM_REG_COUNT; dram++) {
/*
* Call CPU specific READ function to get the DRAM Base and
* Limit values from the DCT.
*/
pvt->ops->read_dram_base_limit(pvt, dram);
/*
* Only print out debug info on rows with both R and W Enabled.
* Normal processing, compiler should optimize this whole 'if'
* debug output block away.
*/
if (pvt->dram_rw_en[dram] != 0) {
debugf1(" DRAM_BASE[%d]: 0x%8.08x-%8.08x "
"DRAM_LIMIT: 0x%8.08x-%8.08x\n",
dram,
(u32)(pvt->dram_base[dram] >> 32),
(u32)(pvt->dram_base[dram] & 0xFFFFFFFF),
(u32)(pvt->dram_limit[dram] >> 32),
(u32)(pvt->dram_limit[dram] & 0xFFFFFFFF));
debugf1(" IntlvEn=%s %s %s "
"IntlvSel=%d DstNode=%d\n",
pvt->dram_IntlvEn[dram] ?
"Enabled" : "Disabled",
(pvt->dram_rw_en[dram] & 0x2) ? "W" : "!W",
(pvt->dram_rw_en[dram] & 0x1) ? "R" : "!R",
pvt->dram_IntlvSel[dram],
pvt->dram_DstNode[dram]);
}
}
amd64_read_dct_base_mask(pvt);
err = pci_read_config_dword(pvt->addr_f1_ctl, K8_DHAR, &pvt->dhar);
if (err)
goto err_reg;
amd64_read_dbam_reg(pvt);
err = pci_read_config_dword(pvt->misc_f3_ctl,
F10_ONLINE_SPARE, &pvt->online_spare);
if (err)
goto err_reg;
err = pci_read_config_dword(pvt->dram_f2_ctl, F10_DCLR_0, &pvt->dclr0);
if (err)
goto err_reg;
err = pci_read_config_dword(pvt->dram_f2_ctl, F10_DCHR_0, &pvt->dchr0);
if (err)
goto err_reg;
if (!dct_ganging_enabled(pvt)) {
err = pci_read_config_dword(pvt->dram_f2_ctl, F10_DCLR_1,
&pvt->dclr1);
if (err)
goto err_reg;
err = pci_read_config_dword(pvt->dram_f2_ctl, F10_DCHR_1,
&pvt->dchr1);
if (err)
goto err_reg;
}
amd64_dump_misc_regs(pvt);
err_reg:
debugf0("Reading an MC register failed\n");
}
/*
* NOTE: CPU Revision Dependent code
*
* Input:
* @csrow_nr ChipSelect Row Number (0..CHIPSELECT_COUNT-1)
* k8 private pointer to -->
* DRAM Bank Address mapping register
* node_id
* DCL register where dual_channel_active is
*
* The DBAM register consists of 4 sets of 4 bits each definitions:
*
* Bits: CSROWs
* 0-3 CSROWs 0 and 1
* 4-7 CSROWs 2 and 3
* 8-11 CSROWs 4 and 5
* 12-15 CSROWs 6 and 7
*
* Values range from: 0 to 15
* The meaning of the values depends on CPU revision and dual-channel state,
* see relevant BKDG more info.
*
* The memory controller provides for total of only 8 CSROWs in its current
* architecture. Each "pair" of CSROWs normally represents just one DIMM in
* single channel or two (2) DIMMs in dual channel mode.
*
* The following code logic collapses the various tables for CSROW based on CPU
* revision.
*
* Returns:
* The number of PAGE_SIZE pages on the specified CSROW number it
* encompasses
*
*/
static u32 amd64_csrow_nr_pages(int csrow_nr, struct amd64_pvt *pvt)
{
u32 dram_map, nr_pages;
/*
* The math on this doesn't look right on the surface because x/2*4 can
* be simplified to x*2 but this expression makes use of the fact that
* it is integral math where 1/2=0. This intermediate value becomes the
* number of bits to shift the DBAM register to extract the proper CSROW
* field.
*/
dram_map = (pvt->dbam0 >> ((csrow_nr / 2) * 4)) & 0xF;
nr_pages = pvt->ops->dbam_map_to_pages(pvt, dram_map);
/*
* If dual channel then double the memory size of single channel.
* Channel count is 1 or 2
*/
nr_pages <<= (pvt->channel_count - 1);
debugf0(" (csrow=%d) DBAM map index= %d\n", csrow_nr, dram_map);
debugf0(" nr_pages= %u channel-count = %d\n",
nr_pages, pvt->channel_count);
return nr_pages;
}
/*
* Initialize the array of csrow attribute instances, based on the values
* from pci config hardware registers.
*/
static int amd64_init_csrows(struct mem_ctl_info *mci)
{
struct csrow_info *csrow;
struct amd64_pvt *pvt;
u64 input_addr_min, input_addr_max, sys_addr;
int i, err = 0, empty = 1;
pvt = mci->pvt_info;
err = pci_read_config_dword(pvt->misc_f3_ctl, K8_NBCFG, &pvt->nbcfg);
if (err)
debugf0("Reading K8_NBCFG failed\n");
debugf0("NBCFG= 0x%x CHIPKILL= %s DRAM ECC= %s\n", pvt->nbcfg,
(pvt->nbcfg & K8_NBCFG_CHIPKILL) ? "Enabled" : "Disabled",
(pvt->nbcfg & K8_NBCFG_ECC_ENABLE) ? "Enabled" : "Disabled"
);
for (i = 0; i < CHIPSELECT_COUNT; i++) {
csrow = &mci->csrows[i];
if ((pvt->dcsb0[i] & K8_DCSB_CS_ENABLE) == 0) {
debugf1("----CSROW %d EMPTY for node %d\n", i,
pvt->mc_node_id);
continue;
}
debugf1("----CSROW %d VALID for MC node %d\n",
i, pvt->mc_node_id);
empty = 0;
csrow->nr_pages = amd64_csrow_nr_pages(i, pvt);
find_csrow_limits(mci, i, &input_addr_min, &input_addr_max);
sys_addr = input_addr_to_sys_addr(mci, input_addr_min);
csrow->first_page = (u32) (sys_addr >> PAGE_SHIFT);
sys_addr = input_addr_to_sys_addr(mci, input_addr_max);
csrow->last_page = (u32) (sys_addr >> PAGE_SHIFT);
csrow->page_mask = ~mask_from_dct_mask(pvt, i);
/* 8 bytes of resolution */
csrow->mtype = amd64_determine_memory_type(pvt);
debugf1(" for MC node %d csrow %d:\n", pvt->mc_node_id, i);
debugf1(" input_addr_min: 0x%lx input_addr_max: 0x%lx\n",
(unsigned long)input_addr_min,
(unsigned long)input_addr_max);
debugf1(" sys_addr: 0x%lx page_mask: 0x%lx\n",
(unsigned long)sys_addr, csrow->page_mask);
debugf1(" nr_pages: %u first_page: 0x%lx "
"last_page: 0x%lx\n",
(unsigned)csrow->nr_pages,
csrow->first_page, csrow->last_page);
/*
* determine whether CHIPKILL or JUST ECC or NO ECC is operating
*/
if (pvt->nbcfg & K8_NBCFG_ECC_ENABLE)
csrow->edac_mode =
(pvt->nbcfg & K8_NBCFG_CHIPKILL) ?
EDAC_S4ECD4ED : EDAC_SECDED;
else
csrow->edac_mode = EDAC_NONE;
}
return empty;
}
/*
* Only if 'ecc_enable_override' is set AND BIOS had ECC disabled, do "we"
* enable it.
*/
static void amd64_enable_ecc_error_reporting(struct mem_ctl_info *mci)
{
struct amd64_pvt *pvt = mci->pvt_info;
const cpumask_t *cpumask = cpumask_of_node(pvt->mc_node_id);
int cpu, idx = 0, err = 0;
struct msr msrs[cpumask_weight(cpumask)];
u32 value;
u32 mask = K8_NBCTL_CECCEn | K8_NBCTL_UECCEn;
if (!ecc_enable_override)
return;
memset(msrs, 0, sizeof(msrs));
amd64_printk(KERN_WARNING,
"'ecc_enable_override' parameter is active, "
"Enabling AMD ECC hardware now: CAUTION\n");
err = pci_read_config_dword(pvt->misc_f3_ctl, K8_NBCTL, &value);
if (err)
debugf0("Reading K8_NBCTL failed\n");
/* turn on UECCn and CECCEn bits */
pvt->old_nbctl = value & mask;
pvt->nbctl_mcgctl_saved = 1;
value |= mask;
pci_write_config_dword(pvt->misc_f3_ctl, K8_NBCTL, value);
rdmsr_on_cpus(cpumask, K8_MSR_MCGCTL, msrs);
for_each_cpu(cpu, cpumask) {
if (msrs[idx].l & K8_MSR_MCGCTL_NBE)
set_bit(idx, &pvt->old_mcgctl);
msrs[idx].l |= K8_MSR_MCGCTL_NBE;
idx++;
}
wrmsr_on_cpus(cpumask, K8_MSR_MCGCTL, msrs);
err = pci_read_config_dword(pvt->misc_f3_ctl, K8_NBCFG, &value);
if (err)
debugf0("Reading K8_NBCFG failed\n");
debugf0("NBCFG(1)= 0x%x CHIPKILL= %s ECC_ENABLE= %s\n", value,
(value & K8_NBCFG_CHIPKILL) ? "Enabled" : "Disabled",
(value & K8_NBCFG_ECC_ENABLE) ? "Enabled" : "Disabled");
if (!(value & K8_NBCFG_ECC_ENABLE)) {
amd64_printk(KERN_WARNING,
"This node reports that DRAM ECC is "
"currently Disabled; ENABLING now\n");
/* Attempt to turn on DRAM ECC Enable */
value |= K8_NBCFG_ECC_ENABLE;
pci_write_config_dword(pvt->misc_f3_ctl, K8_NBCFG, value);
err = pci_read_config_dword(pvt->misc_f3_ctl, K8_NBCFG, &value);
if (err)
debugf0("Reading K8_NBCFG failed\n");
if (!(value & K8_NBCFG_ECC_ENABLE)) {
amd64_printk(KERN_WARNING,
"Hardware rejects Enabling DRAM ECC checking\n"
"Check memory DIMM configuration\n");
} else {
amd64_printk(KERN_DEBUG,
"Hardware accepted DRAM ECC Enable\n");
}
}
debugf0("NBCFG(2)= 0x%x CHIPKILL= %s ECC_ENABLE= %s\n", value,
(value & K8_NBCFG_CHIPKILL) ? "Enabled" : "Disabled",
(value & K8_NBCFG_ECC_ENABLE) ? "Enabled" : "Disabled");
pvt->ctl_error_info.nbcfg = value;
}
static void amd64_restore_ecc_error_reporting(struct amd64_pvt *pvt)
{
const cpumask_t *cpumask = cpumask_of_node(pvt->mc_node_id);
int cpu, idx = 0, err = 0;
struct msr msrs[cpumask_weight(cpumask)];
u32 value;
u32 mask = K8_NBCTL_CECCEn | K8_NBCTL_UECCEn;
if (!pvt->nbctl_mcgctl_saved)
return;
memset(msrs, 0, sizeof(msrs));
err = pci_read_config_dword(pvt->misc_f3_ctl, K8_NBCTL, &value);
if (err)
debugf0("Reading K8_NBCTL failed\n");
value &= ~mask;
value |= pvt->old_nbctl;
/* restore the NB Enable MCGCTL bit */
pci_write_config_dword(pvt->misc_f3_ctl, K8_NBCTL, value);
rdmsr_on_cpus(cpumask, K8_MSR_MCGCTL, msrs);
for_each_cpu(cpu, cpumask) {
msrs[idx].l &= ~K8_MSR_MCGCTL_NBE;
msrs[idx].l |=
test_bit(idx, &pvt->old_mcgctl) << K8_MSR_MCGCTL_NBE;
idx++;
}
wrmsr_on_cpus(cpumask, K8_MSR_MCGCTL, msrs);
}
static void check_mcg_ctl(void *ret)
{
u64 msr_val = 0;
u8 nbe;
rdmsrl(MSR_IA32_MCG_CTL, msr_val);
nbe = msr_val & K8_MSR_MCGCTL_NBE;
debugf0("core: %u, MCG_CTL: 0x%llx, NB MSR is %s\n",
raw_smp_processor_id(), msr_val,
(nbe ? "enabled" : "disabled"));
if (!nbe)
*(int *)ret = 0;
}
/* check MCG_CTL on all the cpus on this node */
static int amd64_mcg_ctl_enabled_on_cpus(const cpumask_t *mask)
{
int ret = 1;
preempt_disable();
smp_call_function_many(mask, check_mcg_ctl, &ret, 1);
preempt_enable();
return ret;
}
/*
* EDAC requires that the BIOS have ECC enabled before taking over the
* processing of ECC errors. This is because the BIOS can properly initialize
* the memory system completely. A command line option allows to force-enable
* hardware ECC later in amd64_enable_ecc_error_reporting().
*/
static int amd64_check_ecc_enabled(struct amd64_pvt *pvt)
{
u32 value;
int err = 0, ret = 0;
u8 ecc_enabled = 0;
err = pci_read_config_dword(pvt->misc_f3_ctl, K8_NBCFG, &value);
if (err)
debugf0("Reading K8_NBCTL failed\n");
ecc_enabled = !!(value & K8_NBCFG_ECC_ENABLE);
ret = amd64_mcg_ctl_enabled_on_cpus(cpumask_of_node(pvt->mc_node_id));
debugf0("K8_NBCFG=0x%x, DRAM ECC is %s\n", value,
(value & K8_NBCFG_ECC_ENABLE ? "enabled" : "disabled"));
if (!ecc_enabled || !ret) {
if (!ecc_enabled) {
amd64_printk(KERN_WARNING, "This node reports that "
"Memory ECC is currently "
"disabled.\n");
amd64_printk(KERN_WARNING, "bit 0x%lx in register "
"F3x%x of the MISC_CONTROL device (%s) "
"should be enabled\n", K8_NBCFG_ECC_ENABLE,
K8_NBCFG, pci_name(pvt->misc_f3_ctl));
}
if (!ret) {
amd64_printk(KERN_WARNING, "bit 0x%016lx in MSR 0x%08x "
"of node %d should be enabled\n",
K8_MSR_MCGCTL_NBE, MSR_IA32_MCG_CTL,
pvt->mc_node_id);
}
if (!ecc_enable_override) {
amd64_printk(KERN_WARNING, "WARNING: ECC is NOT "
"currently enabled by the BIOS. Module "
"will NOT be loaded.\n"
" Either Enable ECC in the BIOS, "
"or use the 'ecc_enable_override' "
"parameter.\n"
" Might be a BIOS bug, if BIOS says "
"ECC is enabled\n"
" Use of the override can cause "
"unknown side effects.\n");
ret = -ENODEV;
}
} else {
amd64_printk(KERN_INFO,
"ECC is enabled by BIOS, Proceeding "
"with EDAC module initialization\n");
/* CLEAR the override, since BIOS controlled it */
ecc_enable_override = 0;
}
return ret;
}
struct mcidev_sysfs_attribute sysfs_attrs[ARRAY_SIZE(amd64_dbg_attrs) +
ARRAY_SIZE(amd64_inj_attrs) +
1];
struct mcidev_sysfs_attribute terminator = { .attr = { .name = NULL } };
static void amd64_set_mc_sysfs_attributes(struct mem_ctl_info *mci)
{
unsigned int i = 0, j = 0;
for (; i < ARRAY_SIZE(amd64_dbg_attrs); i++)
sysfs_attrs[i] = amd64_dbg_attrs[i];
for (j = 0; j < ARRAY_SIZE(amd64_inj_attrs); j++, i++)
sysfs_attrs[i] = amd64_inj_attrs[j];
sysfs_attrs[i] = terminator;
mci->mc_driver_sysfs_attributes = sysfs_attrs;
}
static void amd64_setup_mci_misc_attributes(struct mem_ctl_info *mci)
{
struct amd64_pvt *pvt = mci->pvt_info;
mci->mtype_cap = MEM_FLAG_DDR2 | MEM_FLAG_RDDR2;
mci->edac_ctl_cap = EDAC_FLAG_NONE;
mci->edac_cap = EDAC_FLAG_NONE;
if (pvt->nbcap & K8_NBCAP_SECDED)
mci->edac_ctl_cap |= EDAC_FLAG_SECDED;
if (pvt->nbcap & K8_NBCAP_CHIPKILL)
mci->edac_ctl_cap |= EDAC_FLAG_S4ECD4ED;
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->dev_name = pci_name(pvt->dram_f2_ctl);
mci->ctl_page_to_phys = NULL;
/* IMPORTANT: Set the polling 'check' function in this module */
mci->edac_check = amd64_check;
/* memory scrubber interface */
mci->set_sdram_scrub_rate = amd64_set_scrub_rate;
mci->get_sdram_scrub_rate = amd64_get_scrub_rate;
}
/*
* 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 *dram_f2_ctl,
int mc_type_index)
{
struct amd64_pvt *pvt = NULL;
int err = 0, ret;
ret = -ENOMEM;
pvt = kzalloc(sizeof(struct amd64_pvt), GFP_KERNEL);
if (!pvt)
goto err_exit;
pvt->mc_node_id = get_mc_node_id_from_pdev(dram_f2_ctl);
pvt->dram_f2_ctl = dram_f2_ctl;
pvt->ext_model = boot_cpu_data.x86_model >> 4;
pvt->mc_type_index = mc_type_index;
pvt->ops = family_ops(mc_type_index);
pvt->old_mcgctl = 0;
/*
* We have the dram_f2_ctl device as an argument, now go reserve its
* sibling devices from the PCI system.
*/
ret = -ENODEV;
err = amd64_reserve_mc_sibling_devices(pvt, mc_type_index);
if (err)
goto err_free;
ret = -EINVAL;
err = amd64_check_ecc_enabled(pvt);
if (err)
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
*/
pvt_lookup[pvt->mc_node_id] = pvt;
return 0;
err_put:
amd64_free_mc_sibling_devices(pvt);
err_free:
kfree(pvt);
err_exit:
return ret;
}
/*
* This is the finishing stage of the init code. Needs to be performed after all
* MCs' hardware have been prepped for accessing extended config space.
*/
static int amd64_init_2nd_stage(struct amd64_pvt *pvt)
{
int node_id = pvt->mc_node_id;
struct mem_ctl_info *mci;
int ret, err = 0;
amd64_read_mc_registers(pvt);
ret = -ENODEV;
if (pvt->ops->probe_valid_hardware) {
err = pvt->ops->probe_valid_hardware(pvt);
if (err)
goto err_exit;
}
/*
* We need to determine how many memory channels there are. Then use
* that information for calculating the size of the dynamic instance
* tables in the 'mci' structure
*/
pvt->channel_count = pvt->ops->early_channel_count(pvt);
if (pvt->channel_count < 0)
goto err_exit;
ret = -ENOMEM;
mci = edac_mc_alloc(0, CHIPSELECT_COUNT, pvt->channel_count, node_id);
if (!mci)
goto err_exit;
mci->pvt_info = pvt;
mci->dev = &pvt->dram_f2_ctl->dev;
amd64_setup_mci_misc_attributes(mci);
if (amd64_init_csrows(mci))
mci->edac_cap = EDAC_FLAG_NONE;
amd64_enable_ecc_error_reporting(mci);
amd64_set_mc_sysfs_attributes(mci);
ret = -ENODEV;
if (edac_mc_add_mc(mci)) {
debugf1("failed edac_mc_add_mc()\n");
goto err_add_mc;
}
mci_lookup[node_id] = mci;
pvt_lookup[node_id] = NULL;
return 0;
err_add_mc:
edac_mc_free(mci);
err_exit:
debugf0("failure to init 2nd stage: ret=%d\n", ret);
amd64_restore_ecc_error_reporting(pvt);
if (boot_cpu_data.x86 > 0xf)
amd64_teardown(pvt);
amd64_free_mc_sibling_devices(pvt);
kfree(pvt_lookup[pvt->mc_node_id]);
pvt_lookup[node_id] = NULL;
return ret;
}
static int __devinit amd64_init_one_instance(struct pci_dev *pdev,
const struct pci_device_id *mc_type)
{
int ret = 0;
debugf0("(MC node=%d,mc_type='%s')\n",
get_mc_node_id_from_pdev(pdev),
get_amd_family_name(mc_type->driver_data));
ret = pci_enable_device(pdev);
if (ret < 0)
ret = -EIO;
else
ret = amd64_probe_one_instance(pdev, mc_type->driver_data);
if (ret < 0)
debugf0("ret=%d\n", ret);
return ret;
}
static void __devexit amd64_remove_one_instance(struct pci_dev *pdev)
{
struct mem_ctl_info *mci;
struct amd64_pvt *pvt;
/* Remove from EDAC CORE tracking list */
mci = edac_mc_del_mc(&pdev->dev);
if (!mci)
return;
pvt = mci->pvt_info;
amd64_restore_ecc_error_reporting(pvt);
if (boot_cpu_data.x86 > 0xf)
amd64_teardown(pvt);
amd64_free_mc_sibling_devices(pvt);
kfree(pvt);
mci->pvt_info = NULL;
mci_lookup[pvt->mc_node_id] = NULL;
/* Free the EDAC CORE resources */
edac_mc_free(mci);
}
/*
* This table is part of the interface for loading drivers for PCI devices. The
* PCI core identifies what devices are on a system during boot, and then
* inquiry this table to see if this driver is for a given device found.
*/
static const struct pci_device_id amd64_pci_table[] __devinitdata = {
{
.vendor = PCI_VENDOR_ID_AMD,
.device = PCI_DEVICE_ID_AMD_K8_NB_MEMCTL,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.class = 0,
.class_mask = 0,
.driver_data = K8_CPUS
},
{
.vendor = PCI_VENDOR_ID_AMD,
.device = PCI_DEVICE_ID_AMD_10H_NB_DRAM,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.class = 0,
.class_mask = 0,
.driver_data = F10_CPUS
},
{
.vendor = PCI_VENDOR_ID_AMD,
.device = PCI_DEVICE_ID_AMD_11H_NB_DRAM,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.class = 0,
.class_mask = 0,
.driver_data = F11_CPUS
},
{0, }
};
MODULE_DEVICE_TABLE(pci, amd64_pci_table);
static struct pci_driver amd64_pci_driver = {
.name = EDAC_MOD_STR,
.probe = amd64_init_one_instance,
.remove = __devexit_p(amd64_remove_one_instance),
.id_table = amd64_pci_table,
};
static void amd64_setup_pci_device(void)
{
struct mem_ctl_info *mci;
struct amd64_pvt *pvt;
if (amd64_ctl_pci)
return;
mci = mci_lookup[0];
if (mci) {
pvt = mci->pvt_info;
amd64_ctl_pci =
edac_pci_create_generic_ctl(&pvt->dram_f2_ctl->dev,
EDAC_MOD_STR);
if (!amd64_ctl_pci) {
pr_warning("%s(): Unable to create PCI control\n",
__func__);
pr_warning("%s(): PCI error report via EDAC not set\n",
__func__);
}
}
}
static int __init amd64_edac_init(void)
{
int nb, err = -ENODEV;
edac_printk(KERN_INFO, EDAC_MOD_STR, EDAC_AMD64_VERSION "\n");
opstate_init();
if (cache_k8_northbridges() < 0)
goto err_exit;
err = pci_register_driver(&amd64_pci_driver);
if (err)
return err;
/*
* At this point, the array 'pvt_lookup[]' contains pointers to alloc'd
* amd64_pvt structs. These will be used in the 2nd stage init function
* to finish initialization of the MC instances.
*/
for (nb = 0; nb < num_k8_northbridges; nb++) {
if (!pvt_lookup[nb])
continue;
err = amd64_init_2nd_stage(pvt_lookup[nb]);
if (err)
goto err_exit;
}
amd64_setup_pci_device();
return 0;
err_exit:
debugf0("'finish_setup' stage failed\n");
pci_unregister_driver(&amd64_pci_driver);
return err;
}
static void __exit amd64_edac_exit(void)
{
if (amd64_ctl_pci)
edac_pci_release_generic_ctl(amd64_ctl_pci);
pci_unregister_driver(&amd64_pci_driver);
}
module_init(amd64_edac_init);
module_exit(amd64_edac_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("SoftwareBitMaker: Doug Thompson, "
"Dave Peterson, Thayne Harbaugh");
MODULE_DESCRIPTION("MC support for AMD64 memory controllers - "
EDAC_AMD64_VERSION);
module_param(edac_op_state, int, 0444);
MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI");
drivers/edac/amd64_edac.h 0 → 100644
View file @ c29f5ec0
/*
* AMD64 class Memory Controller kernel module
*
* Copyright (c) 2009 SoftwareBitMaker.
* Copyright (c) 2009 Advanced Micro Devices, Inc.
*
* This file may be distributed under the terms of the
* GNU General Public License.
*
* Originally Written by Thayne Harbaugh
*
* Changes by Douglas "norsk" Thompson <dougthompson@xmission.com>:
* - K8 CPU Revision D and greater support
*
* Changes by Dave Peterson <dsp@llnl.gov> <dave_peterson@pobox.com>:
* - Module largely rewritten, with new (and hopefully correct)
* code for dealing with node and chip select interleaving,
* various code cleanup, and bug fixes
* - Added support for memory hoisting using DRAM hole address
* register
*
* Changes by Douglas "norsk" Thompson <dougthompson@xmission.com>:
* -K8 Rev (1207) revision support added, required Revision
* specific mini-driver code to support Rev F as well as
* prior revisions
*
* Changes by Douglas "norsk" Thompson <dougthompson@xmission.com>:
* -Family 10h revision support added. New PCI Device IDs,
* indicating new changes. Actual registers modified
* were slight, less than the Rev E to Rev F transition
* but changing the PCI Device ID was the proper thing to
* do, as it provides for almost automactic family
* detection. The mods to Rev F required more family
* information detection.
*
* Changes/Fixes by Borislav Petkov <borislav.petkov@amd.com>:
* - misc fixes and code cleanups
*
* This module is based on the following documents
* (available from http://www.amd.com/):
*
* Title: BIOS and Kernel Developer's Guide for AMD Athlon 64 and AMD
* Opteron Processors
* AMD publication #: 26094
*` Revision: 3.26
*
* Title: BIOS and Kernel Developer's Guide for AMD NPT Family 0Fh
* Processors
* AMD publication #: 32559
* Revision: 3.00
* Issue Date: May 2006
*
* Title: BIOS and Kernel Developer's Guide (BKDG) For AMD Family 10h
* Processors
* AMD publication #: 31116
* Revision: 3.00
* Issue Date: September 07, 2007
*
* Sections in the first 2 documents are no longer in sync with each other.
* The Family 10h BKDG was totally re-written from scratch with a new
* presentation model.
* Therefore, comments that refer to a Document section might be off.
*/
#include <linux/module.h>
#include <linux/ctype.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/pci_ids.h>
#include <linux/slab.h>
#include <linux/mmzone.h>
#include <linux/edac.h>
#include <asm/msr.h>
#include "edac_core.h"
#define amd64_printk(level, fmt, arg...) \
edac_printk(level, "amd64", fmt, ##arg)
#define amd64_mc_printk(mci, level, fmt, arg...) \
edac_mc_chipset_printk(mci, level, "amd64", fmt, ##arg)
/*
* Throughout the comments in this code, the following terms are used:
*
* SysAddr, DramAddr, and InputAddr
*
* These terms come directly from the amd64 documentation
* (AMD publication #26094). They are defined as follows:
*
* SysAddr:
* This is a physical address generated by a CPU core or a device
* doing DMA. If generated by a CPU core, a SysAddr is the result of
* a virtual to physical address translation by the CPU core's address
* translation mechanism (MMU).
*
* DramAddr:
* A DramAddr is derived from a SysAddr by subtracting an offset that
* depends on which node the SysAddr maps to and whether the SysAddr
* is within a range affected by memory hoisting. The DRAM Base
* (section 3.4.4.1) and DRAM Limit (section 3.4.4.2) registers
* determine which node a SysAddr maps to.
*
* If the DRAM Hole Address Register (DHAR) is enabled and the SysAddr
* is within the range of addresses specified by this register, then
* a value x from the DHAR is subtracted from the SysAddr to produce a
* DramAddr. Here, x represents the base address for the node that
* the SysAddr maps to plus an offset due to memory hoisting. See
* section 3.4.8 and the comments in amd64_get_dram_hole_info() and
* sys_addr_to_dram_addr() below for more information.
*
* If the SysAddr is not affected by the DHAR then a value y is
* subtracted from the SysAddr to produce a DramAddr. Here, y is the
* base address for the node that the SysAddr maps to. See section
* 3.4.4 and the comments in sys_addr_to_dram_addr() below for more
* information.
*
* InputAddr:
* A DramAddr is translated to an InputAddr before being passed to the
* memory controller for the node that the DramAddr is associated
* with. The memory controller then maps the InputAddr to a csrow.
* If node interleaving is not in use, then the InputAddr has the same
* value as the DramAddr. Otherwise, the InputAddr is produced by
* discarding the bits used for node interleaving from the DramAddr.
* See section 3.4.4 for more information.
*
* The memory controller for a given node uses its DRAM CS Base and
* DRAM CS Mask registers to map an InputAddr to a csrow. See
* sections 3.5.4 and 3.5.5 for more information.
*/
#define EDAC_AMD64_VERSION " Ver: 3.2.0 " __DATE__
#define EDAC_MOD_STR "amd64_edac"
/* Extended Model from CPUID, for CPU Revision numbers */
#define OPTERON_CPU_LE_REV_C 0
#define OPTERON_CPU_REV_D 1
#define OPTERON_CPU_REV_E 2
/* NPT processors have the following Extended Models */
#define OPTERON_CPU_REV_F 4
#define OPTERON_CPU_REV_FA 5
/* Hardware limit on ChipSelect rows per MC and processors per system */
#define CHIPSELECT_COUNT 8
#define DRAM_REG_COUNT 8
/*
* PCI-defined configuration space registers
*/
/*
* Function 1 - Address Map
*/
#define K8_DRAM_BASE_LOW 0x40
#define K8_DRAM_LIMIT_LOW 0x44
#define K8_DHAR 0xf0
#define DHAR_VALID BIT(0)
#define F10_DRAM_MEM_HOIST_VALID BIT(1)
#define DHAR_BASE_MASK 0xff000000
#define dhar_base(dhar) (dhar & DHAR_BASE_MASK)
#define K8_DHAR_OFFSET_MASK 0x0000ff00
#define k8_dhar_offset(dhar) ((dhar & K8_DHAR_OFFSET_MASK) << 16)
#define F10_DHAR_OFFSET_MASK 0x0000ff80
/* NOTE: Extra mask bit vs K8 */
#define f10_dhar_offset(dhar) ((dhar & F10_DHAR_OFFSET_MASK) << 16)
/* F10 High BASE/LIMIT registers */
#define F10_DRAM_BASE_HIGH 0x140
#define F10_DRAM_LIMIT_HIGH 0x144
/*
* Function 2 - DRAM controller
*/
#define K8_DCSB0 0x40
#define F10_DCSB1 0x140
#define K8_DCSB_CS_ENABLE BIT(0)
#define K8_DCSB_NPT_SPARE BIT(1)
#define K8_DCSB_NPT_TESTFAIL BIT(2)
/*
* REV E: select [31:21] and [15:9] from DCSB and the shift amount to form
* the address
*/
#define REV_E_DCSB_BASE_BITS (0xFFE0FE00ULL)
#define REV_E_DCS_SHIFT 4
#define REV_E_DCSM_COUNT 8
#define REV_F_F1Xh_DCSB_BASE_BITS (0x1FF83FE0ULL)
#define REV_F_F1Xh_DCS_SHIFT 8
/*
* REV F and later: selects [28:19] and [13:5] from DCSB and the shift amount
* to form the address
*/
#define REV_F_DCSB_BASE_BITS (0x1FF83FE0ULL)
#define REV_F_DCS_SHIFT 8
#define REV_F_DCSM_COUNT 4
#define F10_DCSM_COUNT 4
#define F11_DCSM_COUNT 2
/* DRAM CS Mask Registers */
#define K8_DCSM0 0x60
#define F10_DCSM1 0x160
/* REV E: select [29:21] and [15:9] from DCSM */
#define REV_E_DCSM_MASK_BITS 0x3FE0FE00
/* unused bits [24:20] and [12:0] */
#define REV_E_DCS_NOTUSED_BITS 0x01F01FFF
/* REV F and later: select [28:19] and [13:5] from DCSM */
#define REV_F_F1Xh_DCSM_MASK_BITS 0x1FF83FE0
/* unused bits [26:22] and [12:0] */
#define REV_F_F1Xh_DCS_NOTUSED_BITS 0x07C01FFF
#define DBAM0 0x80
#define DBAM1 0x180
/* Extract the DIMM 'type' on the i'th DIMM from the DBAM reg value passed */
#define DBAM_DIMM(i, reg) ((((reg) >> (4*i))) & 0xF)
#define DBAM_MAX_VALUE 11
#define F10_DCLR_0 0x90
#define F10_DCLR_1 0x190
#define REVE_WIDTH_128 BIT(16)
#define F10_WIDTH_128 BIT(11)
#define F10_DCHR_0 0x94
#define F10_DCHR_1 0x194
#define F10_DCHR_FOUR_RANK_DIMM BIT(18)
#define F10_DCHR_Ddr3Mode BIT(8)
#define F10_DCHR_MblMode BIT(6)
#define F10_DCTL_SEL_LOW 0x110
#define dct_sel_baseaddr(pvt) \
((pvt->dram_ctl_select_low) & 0xFFFFF800)
#define dct_sel_interleave_addr(pvt) \
(((pvt->dram_ctl_select_low) >> 6) & 0x3)
enum {
F10_DCTL_SEL_LOW_DctSelHiRngEn = BIT(0),
F10_DCTL_SEL_LOW_DctSelIntLvEn = BIT(2),
F10_DCTL_SEL_LOW_DctGangEn = BIT(4),
F10_DCTL_SEL_LOW_DctDatIntLv = BIT(5),
F10_DCTL_SEL_LOW_DramEnable = BIT(8),
F10_DCTL_SEL_LOW_MemCleared = BIT(10),
};
#define dct_high_range_enabled(pvt) \
(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctSelHiRngEn)
#define dct_interleave_enabled(pvt) \
(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctSelIntLvEn)
#define dct_ganging_enabled(pvt) \
(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctGangEn)
#define dct_data_intlv_enabled(pvt) \
(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctDatIntLv)
#define dct_dram_enabled(pvt) \
(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DramEnable)
#define dct_memory_cleared(pvt) \
(pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_MemCleared)
#define F10_DCTL_SEL_HIGH 0x114
/*
* Function 3 - Misc Control
*/
#define K8_NBCTL 0x40
/* Correctable ECC error reporting enable */
#define K8_NBCTL_CECCEn BIT(0)
/* UnCorrectable ECC error reporting enable */
#define K8_NBCTL_UECCEn BIT(1)
#define K8_NBCFG 0x44
#define K8_NBCFG_CHIPKILL BIT(23)
#define K8_NBCFG_ECC_ENABLE BIT(22)
#define K8_NBSL 0x48
#define EXTRACT_HIGH_SYNDROME(x) (((x) >> 24) & 0xff)
#define EXTRACT_EXT_ERROR_CODE(x) (((x) >> 16) & 0x1f)
/* Family F10h: Normalized Extended Error Codes */
#define F10_NBSL_EXT_ERR_RES 0x0
#define F10_NBSL_EXT_ERR_CRC 0x1
#define F10_NBSL_EXT_ERR_SYNC 0x2
#define F10_NBSL_EXT_ERR_MST 0x3
#define F10_NBSL_EXT_ERR_TGT 0x4
#define F10_NBSL_EXT_ERR_GART 0x5
#define F10_NBSL_EXT_ERR_RMW 0x6
#define F10_NBSL_EXT_ERR_WDT 0x7
#define F10_NBSL_EXT_ERR_ECC 0x8
#define F10_NBSL_EXT_ERR_DEV 0x9
#define F10_NBSL_EXT_ERR_LINK_DATA 0xA
/* Next two are overloaded values */
#define F10_NBSL_EXT_ERR_LINK_PROTO 0xB
#define F10_NBSL_EXT_ERR_L3_PROTO 0xB
#define F10_NBSL_EXT_ERR_NB_ARRAY 0xC
#define F10_NBSL_EXT_ERR_DRAM_PARITY 0xD
#define F10_NBSL_EXT_ERR_LINK_RETRY 0xE
/* Next two are overloaded values */
#define F10_NBSL_EXT_ERR_GART_WALK 0xF
#define F10_NBSL_EXT_ERR_DEV_WALK 0xF
/* 0x10 to 0x1B: Reserved */
#define F10_NBSL_EXT_ERR_L3_DATA 0x1C
#define F10_NBSL_EXT_ERR_L3_TAG 0x1D
#define F10_NBSL_EXT_ERR_L3_LRU 0x1E
/* K8: Normalized Extended Error Codes */
#define K8_NBSL_EXT_ERR_ECC 0x0
#define K8_NBSL_EXT_ERR_CRC 0x1
#define K8_NBSL_EXT_ERR_SYNC 0x2
#define K8_NBSL_EXT_ERR_MST 0x3
#define K8_NBSL_EXT_ERR_TGT 0x4
#define K8_NBSL_EXT_ERR_GART 0x5
#define K8_NBSL_EXT_ERR_RMW 0x6
#define K8_NBSL_EXT_ERR_WDT 0x7
#define K8_NBSL_EXT_ERR_CHIPKILL_ECC 0x8
#define K8_NBSL_EXT_ERR_DRAM_PARITY 0xD
#define EXTRACT_ERROR_CODE(x) ((x) & 0xffff)
#define TEST_TLB_ERROR(x) (((x) & 0xFFF0) == 0x0010)
#define TEST_MEM_ERROR(x) (((x) & 0xFF00) == 0x0100)
#define TEST_BUS_ERROR(x) (((x) & 0xF800) == 0x0800)
#define EXTRACT_TT_CODE(x) (((x) >> 2) & 0x3)
#define EXTRACT_II_CODE(x) (((x) >> 2) & 0x3)
#define EXTRACT_LL_CODE(x) (((x) >> 0) & 0x3)
#define EXTRACT_RRRR_CODE(x) (((x) >> 4) & 0xf)
#define EXTRACT_TO_CODE(x) (((x) >> 8) & 0x1)
#define EXTRACT_PP_CODE(x) (((x) >> 9) & 0x3)
/*
* The following are for BUS type errors AFTER values have been normalized by
* shifting right
*/
#define K8_NBSL_PP_SRC 0x0
#define K8_NBSL_PP_RES 0x1
#define K8_NBSL_PP_OBS 0x2
#define K8_NBSL_PP_GENERIC 0x3
#define K8_NBSH 0x4C
#define K8_NBSH_VALID_BIT BIT(31)
#define K8_NBSH_OVERFLOW BIT(30)
#define K8_NBSH_UNCORRECTED_ERR BIT(29)
#define K8_NBSH_ERR_ENABLE BIT(28)
#define K8_NBSH_MISC_ERR_VALID BIT(27)
#define K8_NBSH_VALID_ERROR_ADDR BIT(26)
#define K8_NBSH_PCC BIT(25)
#define K8_NBSH_CECC BIT(14)
#define K8_NBSH_UECC BIT(13)
#define K8_NBSH_ERR_SCRUBER BIT(8)
#define K8_NBSH_CORE3 BIT(3)
#define K8_NBSH_CORE2 BIT(2)
#define K8_NBSH_CORE1 BIT(1)
#define K8_NBSH_CORE0 BIT(0)
#define EXTRACT_LDT_LINK(x) (((x) >> 4) & 0x7)
#define EXTRACT_ERR_CPU_MAP(x) ((x) & 0xF)
#define EXTRACT_LOW_SYNDROME(x) (((x) >> 15) & 0xff)
#define K8_NBEAL 0x50
#define K8_NBEAH 0x54
#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))
#define F10_ONLINE_SPARE_SWAPDONE1(x) ((x) & BIT(3))
#define F10_ONLINE_SPARE_BADDRAM_CS0(x) (((x) >> 4) & 0x00000007)
#define F10_ONLINE_SPARE_BADDRAM_CS1(x) (((x) >> 8) & 0x00000007)
#define F10_NB_ARRAY_ADDR 0xB8
#define F10_NB_ARRAY_DRAM_ECC 0x80000000
/* Bits [2:1] are used to select 16-byte section within a 64-byte cacheline */
#define SET_NB_ARRAY_ADDRESS(section) (((section) & 0x3) << 1)
#define F10_NB_ARRAY_DATA 0xBC
#define SET_NB_DRAM_INJECTION_WRITE(word, bits) \
(BIT(((word) & 0xF) + 20) | \
BIT(17) | \
((bits) & 0xF))
#define SET_NB_DRAM_INJECTION_READ(word, bits) \
(BIT(((word) & 0xF) + 20) | \
BIT(16) | \
((bits) & 0xF))
#define K8_NBCAP 0xE8
#define K8_NBCAP_CORES (BIT(12)|BIT(13))
#define K8_NBCAP_CHIPKILL BIT(4)
#define K8_NBCAP_SECDED BIT(3)
#define K8_NBCAP_8_NODE BIT(2)
#define K8_NBCAP_DUAL_NODE BIT(1)
#define K8_NBCAP_DCT_DUAL BIT(0)
/*
* MSR Regs
*/
#define K8_MSR_MCGCTL 0x017b
#define K8_MSR_MCGCTL_NBE BIT(4)
#define K8_MSR_MC4CTL 0x0410
#define K8_MSR_MC4STAT 0x0411
#define K8_MSR_MC4ADDR 0x0412
/* AMD sets the first MC device at device ID 0x18. */
static inline int get_mc_node_id_from_pdev(struct pci_dev *pdev)
{
return PCI_SLOT(pdev->devfn) - 0x18;
}
enum amd64_chipset_families {
K8_CPUS = 0,
F10_CPUS,
F11_CPUS,
};
/*
* Structure to hold:
*
* 1) dynamically read status and error address HW registers
* 2) sysfs entered values
* 3) MCE values
*
* Depends on entry into the modules
*/
struct amd64_error_info_regs {
u32 nbcfg;
u32 nbsh;
u32 nbsl;
u32 nbeah;
u32 nbeal;
};
/* Error injection control structure */
struct error_injection {
u32 section;
u32 word;
u32 bit_map;
};
struct amd64_pvt {
/* pci_device handles which we utilize */
struct pci_dev *addr_f1_ctl;
struct pci_dev *dram_f2_ctl;
struct pci_dev *misc_f3_ctl;
int mc_node_id; /* MC index of this MC node */
int ext_model; /* extended model value of this node */
struct low_ops *ops; /* pointer to per PCI Device ID func table */
int channel_count;
/* Raw registers */
u32 dclr0; /* DRAM Configuration Low DCT0 reg */
u32 dclr1; /* DRAM Configuration Low DCT1 reg */
u32 dchr0; /* DRAM Configuration High DCT0 reg */
u32 dchr1; /* DRAM Configuration High DCT1 reg */
u32 nbcap; /* North Bridge Capabilities */
u32 nbcfg; /* F10 North Bridge Configuration */
u32 ext_nbcfg; /* Extended F10 North Bridge Configuration */
u32 dhar; /* DRAM Hoist reg */
u32 dbam0; /* DRAM Base Address Mapping reg for DCT0 */
u32 dbam1; /* DRAM Base Address Mapping reg for DCT1 */
/* DRAM CS Base Address Registers F2x[1,0][5C:40] */
u32 dcsb0[CHIPSELECT_COUNT];
u32 dcsb1[CHIPSELECT_COUNT];
/* DRAM CS Mask Registers F2x[1,0][6C:60] */
u32 dcsm0[CHIPSELECT_COUNT];
u32 dcsm1[CHIPSELECT_COUNT];
/*
* Decoded parts of DRAM BASE and LIMIT Registers
* F1x[78,70,68,60,58,50,48,40]
*/
u64 dram_base[DRAM_REG_COUNT];
u64 dram_limit[DRAM_REG_COUNT];
u8 dram_IntlvSel[DRAM_REG_COUNT];
u8 dram_IntlvEn[DRAM_REG_COUNT];
u8 dram_DstNode[DRAM_REG_COUNT];
u8 dram_rw_en[DRAM_REG_COUNT];
/*
* The following fields are set at (load) run time, after CPU revision
* has been determined, since the dct_base and dct_mask registers vary
* based on revision
*/
u32 dcsb_base; /* DCSB base bits */
u32 dcsm_mask; /* DCSM mask bits */
u32 num_dcsm; /* Number of DCSM registers */
u32 dcs_mask_notused; /* DCSM notused mask bits */
u32 dcs_shift; /* DCSB and DCSM shift value */
u64 top_mem; /* top of memory below 4GB */
u64 top_mem2; /* top of memory above 4GB */
u32 dram_ctl_select_low; /* DRAM Controller Select Low Reg */
u32 dram_ctl_select_high; /* DRAM Controller Select High Reg */
u32 online_spare; /* On-Line spare Reg */
/* temp storage for when input is received from sysfs */
struct amd64_error_info_regs ctl_error_info;
/* place to store error injection parameters prior to issue */
struct error_injection injection;
/* Save old hw registers' values before we modified them */
u32 nbctl_mcgctl_saved; /* When true, following 2 are valid */
u32 old_nbctl;
unsigned long old_mcgctl; /* per core on this node */
/* MC Type Index value: socket F vs Family 10h */
u32 mc_type_index;
/* misc settings */
struct flags {
unsigned long cf8_extcfg:1;
} flags;
};
struct scrubrate {
u32 scrubval; /* bit pattern for scrub rate */
u32 bandwidth; /* bandwidth consumed (bytes/sec) */
};
extern struct scrubrate scrubrates[23];
extern u32 revf_quad_ddr2_shift[16];
extern const char *tt_msgs[4];
extern const char *ll_msgs[4];
extern const char *rrrr_msgs[16];
extern const char *to_msgs[2];
extern const char *pp_msgs[4];
extern const char *ii_msgs[4];
extern const char *ext_msgs[32];
extern const char *htlink_msgs[8];
#ifdef CONFIG_EDAC_DEBUG
#define NUM_DBG_ATTRS 9
#else
#define NUM_DBG_ATTRS 0
#endif
#ifdef CONFIG_EDAC_AMD64_ERROR_INJECTION
#define NUM_INJ_ATTRS 5
#else
#define NUM_INJ_ATTRS 0
#endif
extern struct mcidev_sysfs_attribute amd64_dbg_attrs[NUM_DBG_ATTRS],
amd64_inj_attrs[NUM_INJ_ATTRS];
/*
* Each of the PCI Device IDs types have their own set of hardware accessor
* functions and per device encoding/decoding logic.
*/
struct low_ops {
int (*probe_valid_hardware)(struct amd64_pvt *pvt);
int (*early_channel_count)(struct amd64_pvt *pvt);
u64 (*get_error_address)(struct mem_ctl_info *mci,
struct amd64_error_info_regs *info);
void (*read_dram_base_limit)(struct amd64_pvt *pvt, int dram);
void (*read_dram_ctl_register)(struct amd64_pvt *pvt);
void (*map_sysaddr_to_csrow)(struct mem_ctl_info *mci,
struct amd64_error_info_regs *info,
u64 SystemAddr);
int (*dbam_map_to_pages)(struct amd64_pvt *pvt, int dram_map);
};
struct amd64_family_type {
const char *ctl_name;
u16 addr_f1_ctl;
u16 misc_f3_ctl;
struct low_ops ops;
};
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;
}
/*
* For future CPU versions, verify the following as new 'slow' rates appear and
* modify the necessary skip values for the supported CPU.
*/
#define K8_MIN_SCRUB_RATE_BITS 0x0
#define F10_MIN_SCRUB_RATE_BITS 0x5
#define F11_MIN_SCRUB_RATE_BITS 0x6
int amd64_process_error_info(struct mem_ctl_info *mci,
struct amd64_error_info_regs *info,
int handle_errors);
int amd64_get_dram_hole_info(struct mem_ctl_info *mci, u64 *hole_base,
u64 *hole_offset, u64 *hole_size);
drivers/edac/amd64_edac_dbg.c 0 → 100644
View file @ c29f5ec0
#include "amd64_edac.h"
/*
* accept a hex value and store it into the virtual error register file, field:
* nbeal and nbeah. Assume virtual error values have already been set for: NBSL,
* NBSH and NBCFG. Then proceed to map the error values to a MC, CSROW and
* CHANNEL
*/
static ssize_t amd64_nbea_store(struct mem_ctl_info *mci, const char *data,
size_t count)
{
struct amd64_pvt *pvt = mci->pvt_info;
unsigned long long value;
int ret = 0;
ret = strict_strtoull(data, 16, &value);
if (ret != -EINVAL) {
debugf0("received NBEA= 0x%llx\n", value);
/* place the value into the virtual error packet */
pvt->ctl_error_info.nbeal = (u32) value;
value >>= 32;
pvt->ctl_error_info.nbeah = (u32) value;
/* Process the Mapping request */
/* TODO: Add race prevention */
amd64_process_error_info(mci, &pvt->ctl_error_info, 1);
return count;
}
return ret;
}
/* display back what the last NBEA (MCA NB Address (MC4_ADDR)) was written */
static ssize_t amd64_nbea_show(struct mem_ctl_info *mci, char *data)
{
struct amd64_pvt *pvt = mci->pvt_info;
u64 value;
value = pvt->ctl_error_info.nbeah;
value <<= 32;
value |= pvt->ctl_error_info.nbeal;
return sprintf(data, "%llx\n", value);
}
/* store the NBSL (MCA NB Status Low (MC4_STATUS)) value user desires */
static ssize_t amd64_nbsl_store(struct mem_ctl_info *mci, const char *data,
size_t count)
{
struct amd64_pvt *pvt = mci->pvt_info;
unsigned long value;
int ret = 0;
ret = strict_strtoul(data, 16, &value);
if (ret != -EINVAL) {
debugf0("received NBSL= 0x%lx\n", value);
pvt->ctl_error_info.nbsl = (u32) value;
return count;
}
return ret;
}
/* display back what the last NBSL value written */
static ssize_t amd64_nbsl_show(struct mem_ctl_info *mci, char *data)
{
struct amd64_pvt *pvt = mci->pvt_info;
u32 value;
value = pvt->ctl_error_info.nbsl;
return sprintf(data, "%x\n", value);
}
/* store the NBSH (MCA NB Status High) value user desires */
static ssize_t amd64_nbsh_store(struct mem_ctl_info *mci, const char *data,
size_t count)
{
struct amd64_pvt *pvt = mci->pvt_info;
unsigned long value;
int ret = 0;
ret = strict_strtoul(data, 16, &value);
if (ret != -EINVAL) {
debugf0("received NBSH= 0x%lx\n", value);
pvt->ctl_error_info.nbsh = (u32) value;
return count;
}
return ret;
}
/* display back what the last NBSH value written */
static ssize_t amd64_nbsh_show(struct mem_ctl_info *mci, char *data)
{
struct amd64_pvt *pvt = mci->pvt_info;
u32 value;
value = pvt->ctl_error_info.nbsh;
return sprintf(data, "%x\n", value);
}
/* accept and store the NBCFG (MCA NB Configuration) value user desires */
static ssize_t amd64_nbcfg_store(struct mem_ctl_info *mci,
const char *data, size_t count)
{
struct amd64_pvt *pvt = mci->pvt_info;
unsigned long value;
int ret = 0;
ret = strict_strtoul(data, 16, &value);
if (ret != -EINVAL) {
debugf0("received NBCFG= 0x%lx\n", value);
pvt->ctl_error_info.nbcfg = (u32) value;
return count;
}
return ret;
}
/* various show routines for the controls of a MCI */
static ssize_t amd64_nbcfg_show(struct mem_ctl_info *mci, char *data)
{
struct amd64_pvt *pvt = mci->pvt_info;
return sprintf(data, "%x\n", pvt->ctl_error_info.nbcfg);
}
static ssize_t amd64_dhar_show(struct mem_ctl_info *mci, char *data)
{
struct amd64_pvt *pvt = mci->pvt_info;
return sprintf(data, "%x\n", pvt->dhar);
}
static ssize_t amd64_dbam_show(struct mem_ctl_info *mci, char *data)
{
struct amd64_pvt *pvt = mci->pvt_info;
return sprintf(data, "%x\n", pvt->dbam0);
}
static ssize_t amd64_topmem_show(struct mem_ctl_info *mci, char *data)
{
struct amd64_pvt *pvt = mci->pvt_info;
return sprintf(data, "%llx\n", pvt->top_mem);
}
static ssize_t amd64_topmem2_show(struct mem_ctl_info *mci, char *data)
{
struct amd64_pvt *pvt = mci->pvt_info;
return sprintf(data, "%llx\n", pvt->top_mem2);
}
static ssize_t amd64_hole_show(struct mem_ctl_info *mci, char *data)
{
u64 hole_base = 0;
u64 hole_offset = 0;
u64 hole_size = 0;
amd64_get_dram_hole_info(mci, &hole_base, &hole_offset, &hole_size);
return sprintf(data, "%llx %llx %llx\n", hole_base, hole_offset,
hole_size);
}
/*
* update NUM_DBG_ATTRS in case you add new members
*/
struct mcidev_sysfs_attribute amd64_dbg_attrs[] = {
{
.attr = {
.name = "nbea_ctl",
.mode = (S_IRUGO | S_IWUSR)
},
.show = amd64_nbea_show,
.store = amd64_nbea_store,
},
{
.attr = {
.name = "nbsl_ctl",
.mode = (S_IRUGO | S_IWUSR)
},
.show = amd64_nbsl_show,
.store = amd64_nbsl_store,
},
{
.attr = {
.name = "nbsh_ctl",
.mode = (S_IRUGO | S_IWUSR)
},
.show = amd64_nbsh_show,
.store = amd64_nbsh_store,
},
{
.attr = {
.name = "nbcfg_ctl",
.mode = (S_IRUGO | S_IWUSR)
},
.show = amd64_nbcfg_show,
.store = amd64_nbcfg_store,
},
{
.attr = {
.name = "dhar",
.mode = (S_IRUGO)
},
.show = amd64_dhar_show,
.store = NULL,
},
{
.attr = {
.name = "dbam",
.mode = (S_IRUGO)
},
.show = amd64_dbam_show,
.store = NULL,
},
{
.attr = {
.name = "topmem",
.mode = (S_IRUGO)
},
.show = amd64_topmem_show,
.store = NULL,
},
{
.attr = {
.name = "topmem2",
.mode = (S_IRUGO)
},
.show = amd64_topmem2_show,
.store = NULL,
},
{
.attr = {
.name = "dram_hole",
.mode = (S_IRUGO)
},
.show = amd64_hole_show,
.store = NULL,
},
};
drivers/edac/amd64_edac_err_types.c 0 → 100644
View file @ c29f5ec0
#include "amd64_edac.h"
/*
* See F2x80 for K8 and F2x[1,0]80 for Fam10 and later. The table below is only
* for DDR2 DRAM mapping.
*/
u32 revf_quad_ddr2_shift[] = {
0, /* 0000b NULL DIMM (128mb) */
28, /* 0001b 256mb */
29, /* 0010b 512mb */
29, /* 0011b 512mb */
29, /* 0100b 512mb */
30, /* 0101b 1gb */
30, /* 0110b 1gb */
31, /* 0111b 2gb */
31, /* 1000b 2gb */
32, /* 1001b 4gb */
32, /* 1010b 4gb */
33, /* 1011b 8gb */
0, /* 1100b future */
0, /* 1101b future */
0, /* 1110b future */
0 /* 1111b future */
};
/*
* Valid scrub rates for the K8 hardware memory scrubber. We map the scrubbing
* bandwidth to a valid bit pattern. The 'set' operation finds the 'matching-
* or higher value'.
*
*FIXME: Produce a better mapping/linearisation.
*/
struct scrubrate scrubrates[] = {
{ 0x01, 1600000000UL},
{ 0x02, 800000000UL},
{ 0x03, 400000000UL},
{ 0x04, 200000000UL},
{ 0x05, 100000000UL},
{ 0x06, 50000000UL},
{ 0x07, 25000000UL},
{ 0x08, 12284069UL},
{ 0x09, 6274509UL},
{ 0x0A, 3121951UL},
{ 0x0B, 1560975UL},
{ 0x0C, 781440UL},
{ 0x0D, 390720UL},
{ 0x0E, 195300UL},
{ 0x0F, 97650UL},
{ 0x10, 48854UL},
{ 0x11, 24427UL},
{ 0x12, 12213UL},
{ 0x13, 6101UL},
{ 0x14, 3051UL},
{ 0x15, 1523UL},
{ 0x16, 761UL},
{ 0x00, 0UL}, /* scrubbing off */
};
/*
* string representation for the different MCA reported error types, see F3x48
* or MSR0000_0411.
*/
const char *tt_msgs[] = { /* transaction type */
"instruction",
"data",
"generic",
"reserved"
};
const char *ll_msgs[] = { /* cache level */
"L0",
"L1",
"L2",
"L3/generic"
};
const char *rrrr_msgs[] = {
"generic",
"generic read",
"generic write",
"data read",
"data write",
"inst fetch",
"prefetch",
"evict",
"snoop",
"reserved RRRR= 9",
"reserved RRRR= 10",
"reserved RRRR= 11",
"reserved RRRR= 12",
"reserved RRRR= 13",
"reserved RRRR= 14",
"reserved RRRR= 15"
};
const char *pp_msgs[] = { /* participating processor */
"local node originated (SRC)",
"local node responded to request (RES)",
"local node observed as 3rd party (OBS)",
"generic"
};
const char *to_msgs[] = {
"no timeout",
"timed out"
};
const char *ii_msgs[] = { /* memory or i/o */
"mem access",
"reserved",
"i/o access",
"generic"
};
/* Map the 5 bits of Extended Error code to the string table. */
const char *ext_msgs[] = { /* extended error */
"K8 ECC error/F10 reserved", /* 0_0000b */
"CRC error", /* 0_0001b */
"sync error", /* 0_0010b */
"mst abort", /* 0_0011b */
"tgt abort", /* 0_0100b */
"GART error", /* 0_0101b */
"RMW error", /* 0_0110b */
"Wdog timer error", /* 0_0111b */
"F10-ECC/K8-Chipkill error", /* 0_1000b */
"DEV Error", /* 0_1001b */
"Link Data error", /* 0_1010b */
"Link or L3 Protocol error", /* 0_1011b */
"NB Array error", /* 0_1100b */
"DRAM Parity error", /* 0_1101b */
"Link Retry/GART Table Walk/DEV Table Walk error", /* 0_1110b */
"Res 0x0ff error", /* 0_1111b */
"Res 0x100 error", /* 1_0000b */
"Res 0x101 error", /* 1_0001b */
"Res 0x102 error", /* 1_0010b */
"Res 0x103 error", /* 1_0011b */
"Res 0x104 error", /* 1_0100b */
"Res 0x105 error", /* 1_0101b */
"Res 0x106 error", /* 1_0110b */
"Res 0x107 error", /* 1_0111b */
"Res 0x108 error", /* 1_1000b */
"Res 0x109 error", /* 1_1001b */
"Res 0x10A error", /* 1_1010b */
"Res 0x10B error", /* 1_1011b */
"L3 Cache Data error", /* 1_1100b */
"L3 CacheTag error", /* 1_1101b */
"L3 Cache LRU error", /* 1_1110b */
"Res 0x1FF error" /* 1_1111b */
};
const char *htlink_msgs[] = {
"none",
"1",
"2",
"1 2",
"3",
"1 3",
"2 3",
"1 2 3"
};
drivers/edac/amd64_edac_inj.c 0 → 100644
View file @ c29f5ec0
#include "amd64_edac.h"
/*
* store error injection section value which refers to one of 4 16-byte sections
* within a 64-byte cacheline
*
* range: 0..3
*/
static ssize_t amd64_inject_section_store(struct mem_ctl_info *mci,
const char *data, size_t count)
{
struct amd64_pvt *pvt = mci->pvt_info;
unsigned long value;
int ret = 0;
ret = strict_strtoul(data, 10, &value);
if (ret != -EINVAL) {
pvt->injection.section = (u32) value;
return count;
}
return ret;
}
/*
* store error injection word value which refers to one of 9 16-bit word of the
* 16-byte (128-bit + ECC bits) section
*
* range: 0..8
*/
static ssize_t amd64_inject_word_store(struct mem_ctl_info *mci,
const char *data, size_t count)
{
struct amd64_pvt *pvt = mci->pvt_info;
unsigned long value;
int ret = 0;
ret = strict_strtoul(data, 10, &value);
if (ret != -EINVAL) {
value = (value <= 8) ? value : 0;
pvt->injection.word = (u32) value;
return count;
}
return ret;
}
/*
* store 16 bit error injection vector which enables injecting errors to the
* corresponding bit within the error injection word above. When used during a
* DRAM ECC read, it holds the contents of the of the DRAM ECC bits.
*/
static ssize_t amd64_inject_ecc_vector_store(struct mem_ctl_info *mci,
const char *data, size_t count)
{
struct amd64_pvt *pvt = mci->pvt_info;
unsigned long value;
int ret = 0;
ret = strict_strtoul(data, 16, &value);
if (ret != -EINVAL) {
pvt->injection.bit_map = (u32) value & 0xFFFF;
return count;
}
return ret;
}
/*
* Do a DRAM ECC read. Assemble staged values in the pvt area, format into
* fields needed by the injection registers and read the NB Array Data Port.
*/
static ssize_t amd64_inject_read_store(struct mem_ctl_info *mci,
const char *data, size_t count)
{
struct amd64_pvt *pvt = mci->pvt_info;
unsigned long value;
u32 section, word_bits;
int ret = 0;
ret = strict_strtoul(data, 10, &value);
if (ret != -EINVAL) {
/* Form value to choose 16-byte section of cacheline */
section = F10_NB_ARRAY_DRAM_ECC |
SET_NB_ARRAY_ADDRESS(pvt->injection.section);
pci_write_config_dword(pvt->misc_f3_ctl,
F10_NB_ARRAY_ADDR, section);
word_bits = SET_NB_DRAM_INJECTION_READ(pvt->injection.word,
pvt->injection.bit_map);
/* Issue 'word' and 'bit' along with the READ request */
pci_write_config_dword(pvt->misc_f3_ctl,
F10_NB_ARRAY_DATA, word_bits);
debugf0("section=0x%x word_bits=0x%x\n", section, word_bits);
return count;
}
return ret;
}
/*
* Do a DRAM ECC write. Assemble staged values in the pvt area and format into
* fields needed by the injection registers.
*/
static ssize_t amd64_inject_write_store(struct mem_ctl_info *mci,
const char *data, size_t count)
{
struct amd64_pvt *pvt = mci->pvt_info;
unsigned long value;
u32 section, word_bits;
int ret = 0;
ret = strict_strtoul(data, 10, &value);
if (ret != -EINVAL) {
/* Form value to choose 16-byte section of cacheline */
section = F10_NB_ARRAY_DRAM_ECC |
SET_NB_ARRAY_ADDRESS(pvt->injection.section);
pci_write_config_dword(pvt->misc_f3_ctl,
F10_NB_ARRAY_ADDR, section);
word_bits = SET_NB_DRAM_INJECTION_WRITE(pvt->injection.word,
pvt->injection.bit_map);
/* Issue 'word' and 'bit' along with the READ request */
pci_write_config_dword(pvt->misc_f3_ctl,
F10_NB_ARRAY_DATA, word_bits);
debugf0("section=0x%x word_bits=0x%x\n", section, word_bits);
return count;
}
return ret;
}
/*
* update NUM_INJ_ATTRS in case you add new members
*/
struct mcidev_sysfs_attribute amd64_inj_attrs[] = {
{
.attr = {
.name = "inject_section",
.mode = (S_IRUGO | S_IWUSR)
},
.show = NULL,
.store = amd64_inject_section_store,
},
{
.attr = {
.name = "inject_word",
.mode = (S_IRUGO | S_IWUSR)
},
.show = NULL,
.store = amd64_inject_word_store,
},
{
.attr = {
.name = "inject_ecc_vector",
.mode = (S_IRUGO | S_IWUSR)
},
.show = NULL,
.store = amd64_inject_ecc_vector_store,
},
{
.attr = {
.name = "inject_write",
.mode = (S_IRUGO | S_IWUSR)
},
.show = NULL,
.store = amd64_inject_write_store,
},
{
.attr = {
.name = "inject_read",
.mode = (S_IRUGO | S_IWUSR)
},
.show = NULL,
.store = amd64_inject_read_store,
},
};
drivers/edac/edac_core.h
View file @ c29f5ec0
......@@ -76,10 +76,11 @@
extern int edac_debug_level;
#ifndef CONFIG_EDAC_DEBUG_VERBOSE
#define edac_debug_printk(level, fmt, arg...) \
do { \
if (level <= edac_debug_level) \
edac_printk(KERN_DEBUG, EDAC_DEBUG, fmt, ##arg); \
#define edac_debug_printk(level, fmt, arg...) \
do { \
if (level <= edac_debug_level) \
edac_printk(KERN_DEBUG, EDAC_DEBUG, \
"%s: " fmt, __func__, ##arg); \
} while (0)
#else /* CONFIG_EDAC_DEBUG_VERBOSE */
#define edac_debug_printk(level, fmt, arg...) \
......
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