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Date: Fri, 18 May 2012 13:32:07 -0300
From: Mauro Carvalho Chehab <mchehab@...hat.com>
To: unlisted-recipients:; (no To-header on input)
Cc: Mauro Carvalho Chehab <mchehab@...hat.com>,
Linux Edac Mailing List <linux-edac@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH EDAC v26 20/66] i7core_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@...hat.com>
---
drivers/edac/i7core_edac.c | 202 +++++++++++---------------------------------
1 files changed, 50 insertions(+), 152 deletions(-)
diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c
index 0e3cc34..bc2c045 100644
--- a/drivers/edac/i7core_edac.c
+++ b/drivers/edac/i7core_edac.c
@@ -257,7 +257,6 @@ struct i7core_pvt {
struct i7core_channel channel[NUM_CHANS];
int ce_count_available;
- int csrow_map[NUM_CHANS][MAX_DIMMS];
/* ECC corrected errors counts per udimm */
unsigned long udimm_ce_count[MAX_DIMMS];
@@ -492,113 +491,12 @@ static void free_i7core_dev(struct i7core_dev *i7core_dev)
/****************************************************************************
Memory check routines
****************************************************************************/
-static struct pci_dev *get_pdev_slot_func(u8 socket, unsigned slot,
- unsigned func)
-{
- struct i7core_dev *i7core_dev = get_i7core_dev(socket);
- int i;
-
- if (!i7core_dev)
- return NULL;
-
- for (i = 0; i < i7core_dev->n_devs; i++) {
- if (!i7core_dev->pdev[i])
- continue;
-
- if (PCI_SLOT(i7core_dev->pdev[i]->devfn) == slot &&
- PCI_FUNC(i7core_dev->pdev[i]->devfn) == func) {
- return i7core_dev->pdev[i];
- }
- }
-
- return NULL;
-}
-
-/**
- * i7core_get_active_channels() - gets the number of channels and csrows
- * @socket: Quick Path Interconnect socket
- * @channels: Number of channels that will be returned
- * @csrows: Number of csrows found
- *
- * Since EDAC core needs to know in advance the number of available channels
- * and csrows, in order to allocate memory for csrows/channels, it is needed
- * to run two similar steps. At the first step, implemented on this function,
- * it checks the number of csrows/channels present at one socket.
- * this is used in order to properly allocate the size of mci components.
- *
- * It should be noticed that none of the current available datasheets explain
- * or even mention how csrows are seen by the memory controller. So, we need
- * to add a fake description for csrows.
- * So, this driver is attributing one DIMM memory for one csrow.
- */
-static int i7core_get_active_channels(const u8 socket, unsigned *channels,
- unsigned *csrows)
-{
- struct pci_dev *pdev = NULL;
- int i, j;
- u32 status, control;
-
- *channels = 0;
- *csrows = 0;
-
- pdev = get_pdev_slot_func(socket, 3, 0);
- if (!pdev) {
- i7core_printk(KERN_ERR, "Couldn't find socket %d fn 3.0!!!\n",
- socket);
- return -ENODEV;
- }
-
- /* Device 3 function 0 reads */
- pci_read_config_dword(pdev, MC_STATUS, &status);
- pci_read_config_dword(pdev, MC_CONTROL, &control);
-
- for (i = 0; i < NUM_CHANS; i++) {
- u32 dimm_dod[3];
- /* Check if the channel is active */
- if (!(control & (1 << (8 + i))))
- continue;
-
- /* Check if the channel is disabled */
- if (status & (1 << i))
- continue;
-
- pdev = get_pdev_slot_func(socket, i + 4, 1);
- if (!pdev) {
- i7core_printk(KERN_ERR, "Couldn't find socket %d "
- "fn %d.%d!!!\n",
- socket, i + 4, 1);
- return -ENODEV;
- }
- /* Devices 4-6 function 1 */
- pci_read_config_dword(pdev,
- MC_DOD_CH_DIMM0, &dimm_dod[0]);
- pci_read_config_dword(pdev,
- MC_DOD_CH_DIMM1, &dimm_dod[1]);
- pci_read_config_dword(pdev,
- MC_DOD_CH_DIMM2, &dimm_dod[2]);
-
- (*channels)++;
-
- for (j = 0; j < 3; j++) {
- if (!DIMM_PRESENT(dimm_dod[j]))
- continue;
- (*csrows)++;
- }
- }
-
- debugf0("Number of active channels on socket %d: %d\n",
- socket, *channels);
-
- return 0;
-}
static int get_dimm_config(struct mem_ctl_info *mci)
{
struct i7core_pvt *pvt = mci->pvt_info;
- struct csrow_info *csr;
struct pci_dev *pdev;
int i, j;
- int csrow = 0;
enum edac_type mode;
enum mem_type mtype;
struct dimm_info *dimm;
@@ -696,6 +594,8 @@ static int get_dimm_config(struct mem_ctl_info *mci)
if (!DIMM_PRESENT(dimm_dod[j]))
continue;
+ dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms, mci->n_layers,
+ i, j, 0);
banks = numbank(MC_DOD_NUMBANK(dimm_dod[j]));
ranks = numrank(MC_DOD_NUMRANK(dimm_dod[j]));
rows = numrow(MC_DOD_NUMROW(dimm_dod[j]));
@@ -704,8 +604,6 @@ static int get_dimm_config(struct mem_ctl_info *mci)
/* DDR3 has 8 I/O banks */
size = (rows * cols * banks * ranks) >> (20 - 3);
- pvt->channel[i].dimms++;
-
debugf0("\tdimm %d %d Mb offset: %x, "
"bank: %d, rank: %d, row: %#x, col: %#x\n",
j, size,
@@ -714,11 +612,6 @@ static int get_dimm_config(struct mem_ctl_info *mci)
npages = MiB_TO_PAGES(size);
- csr = &mci->csrows[csrow];
-
- pvt->csrow_map[i][j] = csrow;
-
- dimm = csr->channels[0].dimm;
dimm->nr_pages = npages;
switch (banks) {
@@ -741,7 +634,6 @@ static int get_dimm_config(struct mem_ctl_info *mci)
dimm->grain = 8;
dimm->edac_mode = mode;
dimm->mtype = mtype;
- csrow++;
}
pci_read_config_dword(pdev, MC_SAG_CH_0, &value[0]);
@@ -1557,22 +1449,16 @@ error:
/****************************************************************************
Error check routines
****************************************************************************/
-static void i7core_rdimm_update_csrow(struct mem_ctl_info *mci,
+static void i7core_rdimm_update_errcount(struct mem_ctl_info *mci,
const int chan,
const int dimm,
const int add)
{
- char *msg;
- struct i7core_pvt *pvt = mci->pvt_info;
- int row = pvt->csrow_map[chan][dimm], i;
+ int i;
for (i = 0; i < add; i++) {
- msg = kasprintf(GFP_KERNEL, "Corrected error "
- "(Socket=%d channel=%d dimm=%d)",
- pvt->i7core_dev->socket, chan, dimm);
-
- edac_mc_handle_fbd_ce(mci, row, 0, msg);
- kfree (msg);
+ edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 0, 0, 0,
+ chan, dimm, -1, "error", "", NULL);
}
}
@@ -1613,11 +1499,11 @@ static void i7core_rdimm_update_ce_count(struct mem_ctl_info *mci,
/*updated the edac core */
if (add0 != 0)
- i7core_rdimm_update_csrow(mci, chan, 0, add0);
+ i7core_rdimm_update_errcount(mci, chan, 0, add0);
if (add1 != 0)
- i7core_rdimm_update_csrow(mci, chan, 1, add1);
+ i7core_rdimm_update_errcount(mci, chan, 1, add1);
if (add2 != 0)
- i7core_rdimm_update_csrow(mci, chan, 2, add2);
+ i7core_rdimm_update_errcount(mci, chan, 2, add2);
}
@@ -1738,19 +1624,29 @@ static void i7core_mce_output_error(struct mem_ctl_info *mci,
{
struct i7core_pvt *pvt = mci->pvt_info;
char *type, *optype, *err, *msg;
+ enum hw_event_mc_err_type tp_event;
unsigned long error = m->status & 0x1ff0000l;
+ bool uncorrected_error = m->mcgstatus & 1ll << 61;
+ bool ripv = m->mcgstatus & 1;
u32 optypenum = (m->status >> 4) & 0x07;
u32 core_err_cnt = (m->status >> 38) & 0x7fff;
u32 dimm = (m->misc >> 16) & 0x3;
u32 channel = (m->misc >> 18) & 0x3;
u32 syndrome = m->misc >> 32;
u32 errnum = find_first_bit(&error, 32);
- int csrow;
- if (m->mcgstatus & 1)
- type = "FATAL";
- else
- type = "NON_FATAL";
+ if (uncorrected_error) {
+ if (ripv) {
+ type = "FATAL";
+ tp_event = HW_EVENT_ERR_FATAL;
+ } else {
+ type = "NON_FATAL";
+ tp_event = HW_EVENT_ERR_UNCORRECTED;
+ }
+ } else {
+ type = "CORRECTED";
+ tp_event = HW_EVENT_ERR_CORRECTED;
+ }
switch (optypenum) {
case 0:
@@ -1805,25 +1701,23 @@ static void i7core_mce_output_error(struct mem_ctl_info *mci,
err = "unknown";
}
- /* FIXME: should convert addr into bank and rank information */
msg = kasprintf(GFP_ATOMIC,
- "%s (addr = 0x%08llx, cpu=%d, Dimm=%d, Channel=%d, "
- "syndrome=0x%08x, count=%d, Err=%08llx:%08llx (%s: %s))\n",
- type, (long long) m->addr, m->cpu, dimm, channel,
- syndrome, core_err_cnt, (long long)m->status,
- (long long)m->misc, optype, err);
+ "addr=0x%08llx cpu=%d count=%d Err=%08llx:%08llx (%s: %s))\n",
+ (long long) m->addr, m->cpu, core_err_cnt,
+ (long long)m->status, (long long)m->misc, optype, err);
- debugf0("%s", msg);
-
- csrow = pvt->csrow_map[channel][dimm];
-
- /* Call the helper to output message */
- if (m->mcgstatus & 1)
- edac_mc_handle_fbd_ue(mci, csrow, 0,
- 0 /* FIXME: should be channel here */, msg);
- else if (!pvt->is_registered)
- edac_mc_handle_fbd_ce(mci, csrow,
- 0 /* FIXME: should be channel here */, msg);
+ /*
+ * Call the helper to output message
+ * FIXME: what to do if core_err_cnt > 1? Currently, it generates
+ * only one event
+ */
+ if (uncorrected_error || !pvt->is_registered)
+ edac_mc_handle_error(tp_event, mci,
+ m->addr >> PAGE_SHIFT,
+ m->addr & ~PAGE_MASK,
+ syndrome,
+ channel, dimm, -1,
+ err, msg, m);
kfree(msg);
}
@@ -2242,15 +2136,19 @@ static int i7core_register_mci(struct i7core_dev *i7core_dev)
{
struct mem_ctl_info *mci;
struct i7core_pvt *pvt;
- int rc, channels, csrows;
-
- /* Check the number of active and not disabled channels */
- rc = i7core_get_active_channels(i7core_dev->socket, &channels, &csrows);
- if (unlikely(rc < 0))
- return rc;
+ int rc;
+ struct edac_mc_layer layers[2];
/* allocate a new MC control structure */
- mci = edac_mc_alloc(sizeof(*pvt), csrows, channels, i7core_dev->socket);
+
+ layers[0].type = EDAC_MC_LAYER_CHANNEL;
+ layers[0].size = NUM_CHANS;
+ layers[0].is_virt_csrow = false;
+ layers[1].type = EDAC_MC_LAYER_SLOT;
+ layers[1].size = MAX_DIMMS;
+ layers[1].is_virt_csrow = true;
+ mci = new_edac_mc_alloc(i7core_dev->socket, ARRAY_SIZE(layers), layers,
+ sizeof(*pvt));
if (unlikely(!mci))
return -ENOMEM;
--
1.7.8
--
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