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i5400_edac: convert driver to use the new edac ABI 

The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2012-04-16 15:09:58 -03:00
parent d1afaa0a6e
commit 296da591ea
1 changed files with 119 additions and 98 deletions
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217
drivers/edac/i5400_edac.c
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@ -18,6 +18,10 @@
* Intel 5400 Chipset Memory Controller Hub (MCH) - Datasheet
* http://developer.intel.com/design/chipsets/datashts/313070.htm
*
* This Memory Controller manages DDR2 FB-DIMMs. It has 2 branches, each with
* 2 channels operating in lockstep no-mirror mode. Each channel can have up to
* 4 dimm's, each with up to 8GB.
*
*/
#include <linux/module.h>
@ -44,12 +48,10 @@
edac_mc_chipset_printk(mci, level, "i5400", fmt, ##arg)
/* Limits for i5400 */
#define NUM_MTRS_PER_BRANCH 4
#define MAX_BRANCHES 2
#define CHANNELS_PER_BRANCH 2
#define MAX_DIMMS_PER_CHANNEL NUM_MTRS_PER_BRANCH
#define MAX_CHANNELS 4
/* max possible csrows per channel */
#define MAX_CSROWS (MAX_DIMMS_PER_CHANNEL)
#define DIMMS_PER_CHANNEL 4
#define MAX_CHANNELS (MAX_BRANCHES * CHANNELS_PER_BRANCH)
/* Device 16,
* Function 0: System Address
@ -347,16 +349,16 @@ struct i5400_pvt {
u16 mir0, mir1;
u16 b0_mtr[NUM_MTRS_PER_BRANCH]; /* Memory Technlogy Reg */
u16 b0_mtr[DIMMS_PER_CHANNEL]; /* Memory Technlogy Reg */
u16 b0_ambpresent0; /* Branch 0, Channel 0 */
u16 b0_ambpresent1; /* Brnach 0, Channel 1 */
u16 b1_mtr[NUM_MTRS_PER_BRANCH]; /* Memory Technlogy Reg */
u16 b1_mtr[DIMMS_PER_CHANNEL]; /* Memory Technlogy Reg */
u16 b1_ambpresent0; /* Branch 1, Channel 8 */
u16 b1_ambpresent1; /* Branch 1, Channel 1 */
/* DIMM information matrix, allocating architecture maximums */
struct i5400_dimm_info dimm_info[MAX_CSROWS][MAX_CHANNELS];
struct i5400_dimm_info dimm_info[DIMMS_PER_CHANNEL][MAX_CHANNELS];
/* Actual values for this controller */
int maxch; /* Max channels */
@ -532,13 +534,15 @@ static void i5400_proccess_non_recoverable_info(struct mem_ctl_info *mci,
int ras, cas;
int errnum;
char *type = NULL;
enum hw_event_mc_err_type tp_event = HW_EVENT_ERR_UNCORRECTED;
if (!allErrors)
return; /* if no error, return now */
if (allErrors & ERROR_FAT_MASK)
if (allErrors & ERROR_FAT_MASK) {
type = "FATAL";
else if (allErrors & FERR_NF_UNCORRECTABLE)
tp_event = HW_EVENT_ERR_FATAL;
} else if (allErrors & FERR_NF_UNCORRECTABLE)
type = "NON-FATAL uncorrected";
else
type = "NON-FATAL recoverable";
@ -556,7 +560,7 @@ static void i5400_proccess_non_recoverable_info(struct mem_ctl_info *mci,
ras = nrec_ras(info);
cas = nrec_cas(info);
debugf0("\t\tCSROW= %d Channels= %d,%d (Branch= %d "
debugf0("\t\tDIMM= %d Channels= %d,%d (Branch= %d "
"DRAM Bank= %d Buffer ID = %d rdwr= %s ras= %d cas= %d)\n",
rank, channel, channel + 1, branch >> 1, bank,
buf_id, rdwr_str(rdwr), ras, cas);
@ -566,13 +570,13 @@ static void i5400_proccess_non_recoverable_info(struct mem_ctl_info *mci,
/* Form out message */
snprintf(msg, sizeof(msg),
"%s (Branch=%d DRAM-Bank=%d Buffer ID = %d RDWR=%s "
"RAS=%d CAS=%d %s Err=0x%lx (%s))",
type, branch >> 1, bank, buf_id, rdwr_str(rdwr), ras, cas,
type, allErrors, error_name[errnum]);
"Bank=%d Buffer ID = %d RAS=%d CAS=%d Err=0x%lx (%s)",
bank, buf_id, ras, cas, allErrors, error_name[errnum]);
/* Call the helper to output message */
edac_mc_handle_fbd_ue(mci, rank, channel, channel + 1, msg);
edac_mc_handle_error(tp_event, mci, 0, 0, 0,
branch >> 1, -1, rank,
rdwr ? "Write error" : "Read error",
msg, NULL);
}
/*
@ -630,7 +634,7 @@ static void i5400_process_nonfatal_error_info(struct mem_ctl_info *mci,
/* Only 1 bit will be on */
errnum = find_first_bit(&allErrors, ARRAY_SIZE(error_name));
debugf0("\t\tCSROW= %d Channel= %d (Branch %d "
debugf0("\t\tDIMM= %d Channel= %d (Branch %d "
"DRAM Bank= %d rdwr= %s ras= %d cas= %d)\n",
rank, channel, branch >> 1, bank,
rdwr_str(rdwr), ras, cas);
@ -642,8 +646,10 @@ static void i5400_process_nonfatal_error_info(struct mem_ctl_info *mci,
branch >> 1, bank, rdwr_str(rdwr), ras, cas,
allErrors, error_name[errnum]);
/* Call the helper to output message */
edac_mc_handle_fbd_ce(mci, rank, channel, msg);
edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 0, 0, 0,
branch >> 1, channel % 2, rank,
rdwr ? "Write error" : "Read error",
msg, NULL);
return;
}
@ -831,8 +837,8 @@ static int i5400_get_devices(struct mem_ctl_info *mci, int dev_idx)
/*
* determine_amb_present
*
* the information is contained in NUM_MTRS_PER_BRANCH different
* registers determining which of the NUM_MTRS_PER_BRANCH requires
* the information is contained in DIMMS_PER_CHANNEL different
* registers determining which of the DIMMS_PER_CHANNEL requires
* knowing which channel is in question
*
* 2 branches, each with 2 channels
@ -861,11 +867,11 @@ static int determine_amb_present_reg(struct i5400_pvt *pvt, int channel)
}
/*
* determine_mtr(pvt, csrow, channel)
* determine_mtr(pvt, dimm, channel)
*
* return the proper MTR register as determine by the csrow and desired channel
* return the proper MTR register as determine by the dimm and desired channel
*/
static int determine_mtr(struct i5400_pvt *pvt, int csrow, int channel)
static int determine_mtr(struct i5400_pvt *pvt, int dimm, int channel)
{
int mtr;
int n;
@ -873,11 +879,11 @@ static int determine_mtr(struct i5400_pvt *pvt, int csrow, int channel)
/* There is one MTR for each slot pair of FB-DIMMs,
Each slot pair may be at branch 0 or branch 1.
*/
n = csrow;
n = dimm;
if (n >= NUM_MTRS_PER_BRANCH) {
debugf0("ERROR: trying to access an invalid csrow: %d\n",
csrow);
if (n >= DIMMS_PER_CHANNEL) {
debugf0("ERROR: trying to access an invalid dimm: %d\n",
dimm);
return 0;
}
@ -913,19 +919,19 @@ static void decode_mtr(int slot_row, u16 mtr)
debugf2("\t\tNUMCOL: %s\n", numcol_toString[MTR_DIMM_COLS(mtr)]);
}
static void handle_channel(struct i5400_pvt *pvt, int csrow, int channel,
static void handle_channel(struct i5400_pvt *pvt, int dimm, int channel,
struct i5400_dimm_info *dinfo)
{
int mtr;
int amb_present_reg;
int addrBits;
mtr = determine_mtr(pvt, csrow, channel);
mtr = determine_mtr(pvt, dimm, channel);
if (MTR_DIMMS_PRESENT(mtr)) {
amb_present_reg = determine_amb_present_reg(pvt, channel);
/* Determine if there is a DIMM present in this DIMM slot */
if (amb_present_reg & (1 << csrow)) {
if (amb_present_reg & (1 << dimm)) {
/* Start with the number of bits for a Bank
* on the DRAM */
addrBits = MTR_DRAM_BANKS_ADDR_BITS(mtr);
@ -954,7 +960,7 @@ static void handle_channel(struct i5400_pvt *pvt, int csrow, int channel,
static void calculate_dimm_size(struct i5400_pvt *pvt)
{
struct i5400_dimm_info *dinfo;
int csrow, max_csrows;
int dimm, max_dimms;
char *p, *mem_buffer;
int space, n;
int channel;
@ -968,32 +974,32 @@ static void calculate_dimm_size(struct i5400_pvt *pvt)
return;
}
/* Scan all the actual CSROWS
/* Scan all the actual DIMMS
* and calculate the information for each DIMM
* Start with the highest csrow first, to display it first
* and work toward the 0th csrow
* Start with the highest dimm first, to display it first
* and work toward the 0th dimm
*/
max_csrows = pvt->maxdimmperch;
for (csrow = max_csrows - 1; csrow >= 0; csrow--) {
max_dimms = pvt->maxdimmperch;
for (dimm = max_dimms - 1; dimm >= 0; dimm--) {
/* on an odd csrow, first output a 'boundary' marker,
/* on an odd dimm, first output a 'boundary' marker,
* then reset the message buffer */
if (csrow & 0x1) {
if (dimm & 0x1) {
n = snprintf(p, space, "---------------------------"
"--------------------------------");
"-------------------------------");
p += n;
space -= n;
debugf2("%s\n", mem_buffer);
p = mem_buffer;
space = PAGE_SIZE;
}
n = snprintf(p, space, "csrow %2d ", csrow);
n = snprintf(p, space, "dimm %2d ", dimm);
p += n;
space -= n;
for (channel = 0; channel < pvt->maxch; channel++) {
dinfo = &pvt->dimm_info[csrow][channel];
handle_channel(pvt, csrow, channel, dinfo);
dinfo = &pvt->dimm_info[dimm][channel];
handle_channel(pvt, dimm, channel, dinfo);
n = snprintf(p, space, "%4d MB | ", dinfo->megabytes);
p += n;
space -= n;
@ -1005,7 +1011,7 @@ static void calculate_dimm_size(struct i5400_pvt *pvt)
/* Output the last bottom 'boundary' marker */
n = snprintf(p, space, "---------------------------"
"--------------------------------");
"-------------------------------");
p += n;
space -= n;
debugf2("%s\n", mem_buffer);
@ -1013,7 +1019,7 @@ static void calculate_dimm_size(struct i5400_pvt *pvt)
space = PAGE_SIZE;
/* now output the 'channel' labels */
n = snprintf(p, space, " ");
n = snprintf(p, space, " ");
p += n;
space -= n;
for (channel = 0; channel < pvt->maxch; channel++) {
@ -1080,7 +1086,7 @@ static void i5400_get_mc_regs(struct mem_ctl_info *mci)
debugf2("MIR1: limit= 0x%x WAY1= %u WAY0= %x\n", limit, way1, way0);
/* Get the set of MTR[0-3] regs by each branch */
for (slot_row = 0; slot_row < NUM_MTRS_PER_BRANCH; slot_row++) {
for (slot_row = 0; slot_row < DIMMS_PER_CHANNEL; slot_row++) {
int where = MTR0 + (slot_row * sizeof(u16));
/* Branch 0 set of MTR registers */
@ -1105,7 +1111,7 @@ static void i5400_get_mc_regs(struct mem_ctl_info *mci)
/* Read and dump branch 0's MTRs */
debugf2("\nMemory Technology Registers:\n");
debugf2(" Branch 0:\n");
for (slot_row = 0; slot_row < NUM_MTRS_PER_BRANCH; slot_row++)
for (slot_row = 0; slot_row < DIMMS_PER_CHANNEL; slot_row++)
decode_mtr(slot_row, pvt->b0_mtr[slot_row]);
pci_read_config_word(pvt->branch_0, AMBPRESENT_0,
@ -1122,7 +1128,7 @@ static void i5400_get_mc_regs(struct mem_ctl_info *mci)
} else {
/* Read and dump branch 1's MTRs */
debugf2(" Branch 1:\n");
for (slot_row = 0; slot_row < NUM_MTRS_PER_BRANCH; slot_row++)
for (slot_row = 0; slot_row < DIMMS_PER_CHANNEL; slot_row++)
decode_mtr(slot_row, pvt->b1_mtr[slot_row]);
pci_read_config_word(pvt->branch_1, AMBPRESENT_0,
@ -1141,7 +1147,7 @@ static void i5400_get_mc_regs(struct mem_ctl_info *mci)
}
/*
* i5400_init_csrows Initialize the 'csrows' table within
* i5400_init_dimms Initialize the 'dimms' table within
* the mci control structure with the
* addressing of memory.
*
@ -1149,50 +1155,68 @@ static void i5400_get_mc_regs(struct mem_ctl_info *mci)
* 0 success
* 1 no actual memory found on this MC
*/
static int i5400_init_csrows(struct mem_ctl_info *mci)
static int i5400_init_dimms(struct mem_ctl_info *mci)
{
struct i5400_pvt *pvt;
struct csrow_info *p_csrow;
int empty, channel_count;
int max_csrows;
struct dimm_info *dimm;
int ndimms, channel_count;
int max_dimms;
int mtr;
int size_mb;
int channel;
int csrow;
struct dimm_info *dimm;
int channel, slot;
pvt = mci->pvt_info;
channel_count = pvt->maxch;
max_csrows = pvt->maxdimmperch;
max_dimms = pvt->maxdimmperch;
empty = 1; /* Assume NO memory */
ndimms = 0;
for (csrow = 0; csrow < max_csrows; csrow++) {
p_csrow = &mci->csrows[csrow];
/*
* FIXME: remove pvt->dimm_info[slot][channel] and use the 3
* layers here.
*/
for (channel = 0; channel < mci->layers[0].size * mci->layers[1].size;
channel++) {
for (slot = 0; slot < mci->layers[2].size; slot++) {
mtr = determine_mtr(pvt, slot, channel);
/* use branch 0 for the basis */
mtr = determine_mtr(pvt, csrow, 0);
/* if no DIMMS on this slot, continue */
if (!MTR_DIMMS_PRESENT(mtr))
continue;
/* if no DIMMS on this row, continue */
if (!MTR_DIMMS_PRESENT(mtr))
continue;
dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms, mci->n_layers,
channel / 2, channel % 2, slot);
for (channel = 0; channel < pvt->maxch; channel++) {
size_mb = pvt->dimm_info[csrow][channel].megabytes;
size_mb = pvt->dimm_info[slot][channel].megabytes;
debugf2("%s: dimm%zd (branch %d channel %d slot %d): %d.%03d GB\n",
__func__, dimm - mci->dimms,
channel / 2, channel % 2, slot,
size_mb / 1000, size_mb % 1000);
dimm = p_csrow->channels[channel].dimm;
dimm->nr_pages = size_mb << 8;
dimm->grain = 8;
dimm->dtype = MTR_DRAM_WIDTH(mtr) ? DEV_X8 : DEV_X4;
dimm->mtype = MEM_RDDR2;
dimm->edac_mode = EDAC_SECDED;
dimm->mtype = MEM_FB_DDR2;
/*
* The eccc mechanism is SDDC (aka SECC), with
* is similar to Chipkill.
*/
dimm->edac_mode = MTR_DRAM_WIDTH(mtr) ?
EDAC_S8ECD8ED : EDAC_S4ECD4ED;
ndimms++;
}
empty = 0;
}
return empty;
/*
* When just one memory is provided, it should be at location (0,0,0).
* With such single-DIMM mode, the SDCC algorithm degrades to SECDEC+.
*/
if (ndimms == 1)
mci->dimms[0].edac_mode = EDAC_SECDED;
return (ndimms == 0);
}
/*
@ -1228,9 +1252,7 @@ static int i5400_probe1(struct pci_dev *pdev, int dev_idx)
{
struct mem_ctl_info *mci;
struct i5400_pvt *pvt;
int num_channels;
int num_dimms_per_channel;
int num_csrows;
struct edac_mc_layer layers[3];
if (dev_idx >= ARRAY_SIZE(i5400_devs))
return -EINVAL;
@ -1244,22 +1266,21 @@ static int i5400_probe1(struct pci_dev *pdev, int dev_idx)
if (PCI_FUNC(pdev->devfn) != 0)
return -ENODEV;
/* As we don't have a motherboard identification routine to determine
* actual number of slots/dimms per channel, we thus utilize the
* resource as specified by the chipset. Thus, we might have
* have more DIMMs per channel than actually on the mobo, but this
* allows the driver to support up to the chipset max, without
* some fancy mobo determination.
/*
* allocate a new MC control structure
*
* This drivers uses the DIMM slot as "csrow" and the rest as "channel".
*/
num_dimms_per_channel = MAX_DIMMS_PER_CHANNEL;
num_channels = MAX_CHANNELS;
num_csrows = num_dimms_per_channel;
debugf0("MC: %s(): Number of - Channels= %d DIMMS= %d CSROWS= %d\n",
__func__, num_channels, num_dimms_per_channel, num_csrows);
/* allocate a new MC control structure */
mci = edac_mc_alloc(sizeof(*pvt), num_csrows, num_channels, 0);
layers[0].type = EDAC_MC_LAYER_BRANCH;
layers[0].size = MAX_BRANCHES;
layers[0].is_virt_csrow = false;
layers[1].type = EDAC_MC_LAYER_CHANNEL;
layers[1].size = CHANNELS_PER_BRANCH;
layers[1].is_virt_csrow = false;
layers[2].type = EDAC_MC_LAYER_SLOT;
layers[2].size = DIMMS_PER_CHANNEL;
layers[2].is_virt_csrow = true;
mci = new_edac_mc_alloc(0, ARRAY_SIZE(layers), layers, sizeof(*pvt));
if (mci == NULL)
return -ENOMEM;
@ -1270,8 +1291,8 @@ static int i5400_probe1(struct pci_dev *pdev, int dev_idx)
pvt = mci->pvt_info;
pvt->system_address = pdev; /* Record this device in our private */
pvt->maxch = num_channels;
pvt->maxdimmperch = num_dimms_per_channel;
pvt->maxch = MAX_CHANNELS;
pvt->maxdimmperch = DIMMS_PER_CHANNEL;
/* 'get' the pci devices we want to reserve for our use */
if (i5400_get_devices(mci, dev_idx))
@ -1293,13 +1314,13 @@ static int i5400_probe1(struct pci_dev *pdev, int dev_idx)
/* Set the function pointer to an actual operation function */
mci->edac_check = i5400_check_error;
/* initialize the MC control structure 'csrows' table
/* initialize the MC control structure 'dimms' table
* with the mapping and control information */
if (i5400_init_csrows(mci)) {
if (i5400_init_dimms(mci)) {
debugf0("MC: Setting mci->edac_cap to EDAC_FLAG_NONE\n"
" because i5400_init_csrows() returned nonzero "
" because i5400_init_dimms() returned nonzero "
"value\n");
mci->edac_cap = EDAC_FLAG_NONE; /* no csrows found */
mci->edac_cap = EDAC_FLAG_NONE; /* no dimms found */
} else {
debugf1("MC: Enable error reporting now\n");
i5400_enable_error_reporting(mci);