From 296da591ea1d81b8d94d6e79b6c235bb820526b9 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 16 Apr 2012 15:09:58 -0300 Subject: [PATCH] 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 --- drivers/edac/i5400_edac.c | 217 +++++++++++++++++++++----------------- 1 file changed, 119 insertions(+), 98 deletions(-) diff --git a/drivers/edac/i5400_edac.c b/drivers/edac/i5400_edac.c index 6543f4a8367b..508f369b1f6c 100644 --- a/drivers/edac/i5400_edac.c +++ b/drivers/edac/i5400_edac.c @@ -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 @@ -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); -- 2.39.5