Linux-EDAC Archive on lore.kernel.org
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From: Robert Richter <rrichter@marvell.com>
To: Borislav Petkov <bp@alien8.de>, Tony Luck <tony.luck@intel.com>,
	"James Morse" <james.morse@arm.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Jason Baron <jbaron@akamai.com>,
	Qiuxu Zhuo <qiuxu.zhuo@intel.com>,
	"Tero Kristo" <t-kristo@ti.com>
Cc: "linux-edac@vger.kernel.org" <linux-edac@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Robert Richter <rrichter@marvell.com>
Subject: [PATCH 03/21] EDAC: Kill EDAC_DIMM_PTR() macro
Date: Wed, 29 May 2019 08:44:10 +0000
Message-ID: <20190529084344.28562-4-rrichter@marvell.com> (raw)
In-Reply-To: <20190529084344.28562-1-rrichter@marvell.com>

Get rid of this macro and instead use the new function
edac_get_dimm(). Also introduce the edac_get_dimm_by_index() function
for later use.

Semantic patch used:

@@ expression mci, a, b,c; @@

-EDAC_DIMM_PTR(mci->layers, mci->dimms, mci->n_layers, a, b, c)
+edac_get_dimm(mci, a, b, c)

Signed-off-by: Robert Richter <rrichter@marvell.com>
---
 drivers/edac/edac_mc.c      |  1 +
 drivers/edac/ghes_edac.c    |  8 ++--
 drivers/edac/i10nm_base.c   |  3 +-
 drivers/edac/i3200_edac.c   |  3 +-
 drivers/edac/i5000_edac.c   |  5 +--
 drivers/edac/i5100_edac.c   |  3 +-
 drivers/edac/i5400_edac.c   |  4 +-
 drivers/edac/i7300_edac.c   |  3 +-
 drivers/edac/i7core_edac.c  |  3 +-
 drivers/edac/ie31200_edac.c |  7 +---
 drivers/edac/pnd2_edac.c    |  4 +-
 drivers/edac/sb_edac.c      |  2 +-
 drivers/edac/skx_base.c     |  3 +-
 drivers/edac/ti_edac.c      |  2 +-
 include/linux/edac.h        | 84 +++++++++++++++++++++++--------------
 15 files changed, 73 insertions(+), 62 deletions(-)

diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index 64922c8fa7e3..5f565e5949b3 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -439,6 +439,7 @@ struct mem_ctl_info *edac_mc_alloc(unsigned mc_num,
 			goto error;
 		mci->dimms[off] = dimm;
 		dimm->mci = mci;
+		dimm->idx = off;
 
 		/*
 		 * Copy DIMM location and initialize it.
diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c
index 49396bf6ad88..42afa2604db3 100644
--- a/drivers/edac/ghes_edac.c
+++ b/drivers/edac/ghes_edac.c
@@ -100,9 +100,8 @@ static void ghes_edac_dmidecode(const struct dmi_header *dh, void *arg)
 
 	if (dh->type == DMI_ENTRY_MEM_DEVICE) {
 		struct memdev_dmi_entry *entry = (struct memdev_dmi_entry *)dh;
-		struct dimm_info *dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms,
-						       mci->n_layers,
-						       dimm_fill->count, 0, 0);
+		struct dimm_info *dimm = edac_get_dimm(mci, dimm_fill->count,
+						       0, 0);
 		u16 rdr_mask = BIT(7) | BIT(13);
 
 		if (entry->size == 0xffff) {
@@ -529,8 +528,7 @@ int ghes_edac_register(struct ghes *ghes, struct device *dev)
 		dimm_fill.mci = mci;
 		dmi_walk(ghes_edac_dmidecode, &dimm_fill);
 	} else {
-		struct dimm_info *dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms,
-						       mci->n_layers, 0, 0, 0);
+		struct dimm_info *dimm = edac_get_dimm(mci, 0, 0, 0);
 
 		dimm->nr_pages = 1;
 		dimm->grain = 128;
diff --git a/drivers/edac/i10nm_base.c b/drivers/edac/i10nm_base.c
index c334fb7c63df..bc7c990b57a5 100644
--- a/drivers/edac/i10nm_base.c
+++ b/drivers/edac/i10nm_base.c
@@ -152,8 +152,7 @@ static int i10nm_get_dimm_config(struct mem_ctl_info *mci)
 
 		ndimms = 0;
 		for (j = 0; j < I10NM_NUM_DIMMS; j++) {
-			dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms,
-					     mci->n_layers, i, j, 0);
+			dimm = edac_get_dimm(mci, i, j, 0);
 			mtr = I10NM_GET_DIMMMTR(imc, i, j);
 			mcddrtcfg = I10NM_GET_MCDDRTCFG(imc, i, j);
 			edac_dbg(1, "dimmmtr 0x%x mcddrtcfg 0x%x (mc%d ch%d dimm%d)\n",
diff --git a/drivers/edac/i3200_edac.c b/drivers/edac/i3200_edac.c
index 299b441647cd..432b375a4075 100644
--- a/drivers/edac/i3200_edac.c
+++ b/drivers/edac/i3200_edac.c
@@ -392,8 +392,7 @@ static int i3200_probe1(struct pci_dev *pdev, int dev_idx)
 		unsigned long nr_pages;
 
 		for (j = 0; j < nr_channels; j++) {
-			struct dimm_info *dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms,
-							       mci->n_layers, i, j, 0);
+			struct dimm_info *dimm = edac_get_dimm(mci, i, j, 0);
 
 			nr_pages = drb_to_nr_pages(drbs, stacked, j, i);
 			if (nr_pages == 0)
diff --git a/drivers/edac/i5000_edac.c b/drivers/edac/i5000_edac.c
index 078a7351bf05..1a6f69c859ab 100644
--- a/drivers/edac/i5000_edac.c
+++ b/drivers/edac/i5000_edac.c
@@ -1275,9 +1275,8 @@ static int i5000_init_csrows(struct mem_ctl_info *mci)
 			if (!MTR_DIMMS_PRESENT(mtr))
 				continue;
 
-			dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms, mci->n_layers,
-				       channel / MAX_BRANCHES,
-				       channel % MAX_BRANCHES, slot);
+			dimm = edac_get_dimm(mci, channel / MAX_BRANCHES,
+					     channel % MAX_BRANCHES, slot);
 
 			csrow_megs = pvt->dimm_info[slot][channel].megabytes;
 			dimm->grain = 8;
diff --git a/drivers/edac/i5100_edac.c b/drivers/edac/i5100_edac.c
index b506eef6b146..39ba7f2414ae 100644
--- a/drivers/edac/i5100_edac.c
+++ b/drivers/edac/i5100_edac.c
@@ -858,8 +858,7 @@ static void i5100_init_csrows(struct mem_ctl_info *mci)
 		if (!npages)
 			continue;
 
-		dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms, mci->n_layers,
-			       chan, rank, 0);
+		dimm = edac_get_dimm(mci, chan, rank, 0);
 
 		dimm->nr_pages = npages;
 		dimm->grain = 32;
diff --git a/drivers/edac/i5400_edac.c b/drivers/edac/i5400_edac.c
index 6f8bcdb9256a..a50a8707337b 100644
--- a/drivers/edac/i5400_edac.c
+++ b/drivers/edac/i5400_edac.c
@@ -1196,8 +1196,8 @@ static int i5400_init_dimms(struct mem_ctl_info *mci)
 			if (!MTR_DIMMS_PRESENT(mtr))
 				continue;
 
-			dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms, mci->n_layers,
-				       channel / 2, channel % 2, slot);
+			dimm = edac_get_dimm(mci, channel / 2, channel % 2,
+					     slot);
 
 			size_mb =  pvt->dimm_info[slot][channel].megabytes;
 
diff --git a/drivers/edac/i7300_edac.c b/drivers/edac/i7300_edac.c
index 6b5a554ba8e4..b76be69f0d74 100644
--- a/drivers/edac/i7300_edac.c
+++ b/drivers/edac/i7300_edac.c
@@ -796,8 +796,7 @@ static int i7300_init_csrows(struct mem_ctl_info *mci)
 			for (ch = 0; ch < max_channel; ch++) {
 				int channel = to_channel(ch, branch);
 
-				dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms,
-					       mci->n_layers, branch, ch, slot);
+				dimm = edac_get_dimm(mci, branch, ch, slot);
 
 				dinfo = &pvt->dimm_info[slot][channel];
 
diff --git a/drivers/edac/i7core_edac.c b/drivers/edac/i7core_edac.c
index 40297550313a..4d7afcd55626 100644
--- a/drivers/edac/i7core_edac.c
+++ b/drivers/edac/i7core_edac.c
@@ -587,8 +587,7 @@ 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);
+			dimm = edac_get_dimm(mci, 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]));
diff --git a/drivers/edac/ie31200_edac.c b/drivers/edac/ie31200_edac.c
index aac9b9b360b8..a2b4d80ddc57 100644
--- a/drivers/edac/ie31200_edac.c
+++ b/drivers/edac/ie31200_edac.c
@@ -467,9 +467,7 @@ static int ie31200_probe1(struct pci_dev *pdev, int dev_idx)
 
 			if (dimm_info[j][i].dual_rank) {
 				nr_pages = nr_pages / 2;
-				dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms,
-						     mci->n_layers, (i * 2) + 1,
-						     j, 0);
+				dimm = edac_get_dimm(mci, (i * 2) + 1, j, 0);
 				dimm->nr_pages = nr_pages;
 				edac_dbg(0, "set nr pages: 0x%lx\n", nr_pages);
 				dimm->grain = 8; /* just a guess */
@@ -480,8 +478,7 @@ static int ie31200_probe1(struct pci_dev *pdev, int dev_idx)
 				dimm->dtype = DEV_UNKNOWN;
 				dimm->edac_mode = EDAC_UNKNOWN;
 			}
-			dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms,
-					     mci->n_layers, i * 2, j, 0);
+			dimm = edac_get_dimm(mci, i * 2, j, 0);
 			dimm->nr_pages = nr_pages;
 			edac_dbg(0, "set nr pages: 0x%lx\n", nr_pages);
 			dimm->grain = 8; /* same guess */
diff --git a/drivers/edac/pnd2_edac.c b/drivers/edac/pnd2_edac.c
index 903a4f1fadcc..2f7dcafd84b1 100644
--- a/drivers/edac/pnd2_edac.c
+++ b/drivers/edac/pnd2_edac.c
@@ -1234,7 +1234,7 @@ static void apl_get_dimm_config(struct mem_ctl_info *mci)
 		if (!(chan_mask & BIT(i)))
 			continue;
 
-		dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms, mci->n_layers, i, 0, 0);
+		dimm = edac_get_dimm(mci, i, 0, 0);
 		if (!dimm) {
 			edac_dbg(0, "No allocated DIMM for channel %d\n", i);
 			continue;
@@ -1314,7 +1314,7 @@ static void dnv_get_dimm_config(struct mem_ctl_info *mci)
 			if (!ranks_of_dimm[j])
 				continue;
 
-			dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms, mci->n_layers, i, j, 0);
+			dimm = edac_get_dimm(mci, i, j, 0);
 			if (!dimm) {
 				edac_dbg(0, "No allocated DIMM for channel %d DIMM %d\n", i, j);
 				continue;
diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c
index 9353c3fc7c05..5dfa9ba1c252 100644
--- a/drivers/edac/sb_edac.c
+++ b/drivers/edac/sb_edac.c
@@ -1623,7 +1623,7 @@ static int __populate_dimms(struct mem_ctl_info *mci,
 		}
 
 		for (j = 0; j < max_dimms_per_channel; j++) {
-			dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms, mci->n_layers, i, j, 0);
+			dimm = edac_get_dimm(mci, i, j, 0);
 			if (pvt->info.type == KNIGHTS_LANDING) {
 				pci_read_config_dword(pvt->knl.pci_channel[i],
 					knl_mtr_reg, &mtr);
diff --git a/drivers/edac/skx_base.c b/drivers/edac/skx_base.c
index adae4c848ca1..6a828d6c0852 100644
--- a/drivers/edac/skx_base.c
+++ b/drivers/edac/skx_base.c
@@ -177,8 +177,7 @@ static int skx_get_dimm_config(struct mem_ctl_info *mci)
 		pci_read_config_dword(imc->chan[i].cdev, 0x8C, &amap);
 		pci_read_config_dword(imc->chan[i].cdev, 0x400, &mcddrtcfg);
 		for (j = 0; j < SKX_NUM_DIMMS; j++) {
-			dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms,
-					     mci->n_layers, i, j, 0);
+			dimm = edac_get_dimm(mci, i, j, 0);
 			pci_read_config_dword(imc->chan[i].cdev,
 					      0x80 + 4 * j, &mtr);
 			if (IS_DIMM_PRESENT(mtr)) {
diff --git a/drivers/edac/ti_edac.c b/drivers/edac/ti_edac.c
index 6ac26d1b929f..8be3e89a510e 100644
--- a/drivers/edac/ti_edac.c
+++ b/drivers/edac/ti_edac.c
@@ -135,7 +135,7 @@ static void ti_edac_setup_dimm(struct mem_ctl_info *mci, u32 type)
 	u32 val;
 	u32 memsize;
 
-	dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms, mci->n_layers, 0, 0, 0);
+	dimm = edac_get_dimm(mci, 0, 0, 0);
 
 	val = ti_edac_readl(edac, EMIF_SDRAM_CONFIG);
 
diff --git a/include/linux/edac.h b/include/linux/edac.h
index 342dabda9c7e..1367a3fc544f 100644
--- a/include/linux/edac.h
+++ b/include/linux/edac.h
@@ -403,37 +403,6 @@ struct edac_mc_layer {
 	__i;								\
 })
 
-/**
- * EDAC_DIMM_PTR - Macro responsible to get a pointer inside a pointer array
- *		   for the element given by [layer0,layer1,layer2] position
- *
- * @layers:	a struct edac_mc_layer array, describing how many elements
- *		were allocated for each layer
- * @var:	name of the var where we want to get the pointer
- *		(like mci->dimms)
- * @nlayers:	Number of layers at the @layers array
- * @layer0:	layer0 position
- * @layer1:	layer1 position. Unused if n_layers < 2
- * @layer2:	layer2 position. Unused if n_layers < 3
- *
- * For 1 layer, this macro returns "var[layer0]";
- *
- * For 2 layers, this macro is similar to allocate a bi-dimensional array
- * and to return "var[layer0][layer1]";
- *
- * For 3 layers, this macro is similar to allocate a tri-dimensional array
- * and to return "var[layer0][layer1][layer2]";
- */
-#define EDAC_DIMM_PTR(layers, var, nlayers, layer0, layer1, layer2) ({	\
-	typeof(*var) __p;						\
-	int ___i = EDAC_DIMM_OFF(layers, nlayers, layer0, layer1, layer2);	\
-	if (___i < 0)							\
-		__p = NULL;						\
-	else								\
-		__p = (var)[___i];					\
-	__p;								\
-})
-
 struct dimm_info {
 	struct device dev;
 
@@ -443,6 +412,7 @@ struct dimm_info {
 	unsigned location[EDAC_MAX_LAYERS];
 
 	struct mem_ctl_info *mci;	/* the parent */
+	int idx;			/* index within the parent dimm array */
 
 	u32 grain;		/* granularity of reported error in bytes */
 	enum dev_type dtype;	/* memory device type */
@@ -669,4 +639,56 @@ struct mem_ctl_info {
 	bool fake_inject_ue;
 	u16 fake_inject_count;
 };
+
+/**
+ * edac_get_dimm_by_index - Get DIMM info from a memory controller
+ *                          given by an index
+ *
+ * @mci:	a struct mem_ctl_info
+ * @index:	index in the memory controller's DIMM array
+ *
+ * Returns a struct dimm_info*.
+ */
+static inline struct dimm_info *
+edac_get_dimm_by_index(struct mem_ctl_info *mci, int index)
+{
+	if (index < 0 || index >= mci->tot_dimms)
+		return NULL;
+
+	if (WARN_ON_ONCE(mci->dimms[index]->idx != index))
+		return NULL;
+
+	return mci->dimms[index];
+}
+
+/**
+ * edac_get_dimm - Get DIMM info from a memory controller given by
+ *                 [layer0,layer1,layer2] position
+ *
+ * @mci:	a struct mem_ctl_info
+ * @layer0:	layer0 position
+ * @layer1:	layer1 position. Unused if n_layers < 2
+ * @layer2:	layer2 position. Unused if n_layers < 3
+ *
+ * For 1 layer, this macro returns "dimms[layer0]";
+ *
+ * For 2 layers, this macro is similar to allocate a bi-dimensional array
+ * and to return "dimms[layer0][layer1]";
+ *
+ * For 3 layers, this macro is similar to allocate a tri-dimensional array
+ * and to return "dimms[layer0][layer1][layer2]";
+ */
+static inline struct dimm_info *
+edac_get_dimm(struct mem_ctl_info *mci, int layer0, int layer1, int layer2)
+{
+	int index = layer0;
+
+	if (index >= 0 && mci->n_layers > 1)
+		index = index * mci->layers[1].size + layer1;
+	if (index >= 0 && mci->n_layers > 2)
+		index = index * mci->layers[2].size + layer2;
+
+	return edac_get_dimm_by_index(mci, index);
+}
+
 #endif
-- 
2.20.1


  parent reply index

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-29  8:44 [PATCH 00/21] EDAC, mc, ghes: Fixes and updates to improve memory error reporting Robert Richter
2019-05-29  8:44 ` [PATCH 01/21] EDAC, mc: Fix edac_mc_find() in case no device is found Robert Richter
2019-05-29  8:44 ` [PATCH 02/21] EDAC: Fixes to use put_device() after device_add() errors Robert Richter
2019-06-11 17:28   ` Borislav Petkov
2019-06-12 17:17     ` Robert Richter
2019-05-29  8:44 ` Robert Richter [this message]
2019-05-29  8:44 ` [PATCH 04/21] EDAC: Kill EDAC_DIMM_OFF() macro Robert Richter
2019-05-29  8:44 ` [PATCH 05/21] EDAC: Introduce mci_for_each_dimm() iterator Robert Richter
2019-05-29  8:44 ` [PATCH 06/21] EDAC, mc: Cleanup _edac_mc_free() code Robert Richter
2019-05-29  8:44 ` [PATCH 07/21] EDAC, mc: Remove per layer counters Robert Richter
2019-05-29  8:44 ` [PATCH 08/21] EDAC, mc: Rework edac_raw_mc_handle_error() to use struct dimm_info Robert Richter
2019-05-29  8:44 ` [PATCH 09/21] EDAC, ghes: Use standard kernel macros for page calculations Robert Richter
2019-05-29 15:13   ` James Morse
2019-05-29  8:44 ` [PATCH 10/21] EDAC, ghes: Remove pvt->detail_location string Robert Richter
2019-05-29 15:13   ` James Morse
2019-06-12 18:13     ` Robert Richter
2019-05-29  8:44 ` [PATCH 11/21] EDAC, ghes: Unify trace_mc_event() code with edac_mc driver Robert Richter
2019-05-29 15:12   ` James Morse
2019-06-03 13:10     ` Robert Richter
2019-06-04 17:15       ` James Morse
2019-06-13 22:23         ` Robert Richter
2019-05-29  8:44 ` [PATCH 12/21] EDAC, ghes: Add support for legacy API counters Robert Richter
2019-05-29 15:13   ` James Morse
2019-06-12 18:41     ` Robert Richter
2019-06-19 17:22       ` James Morse
2019-06-20  6:55         ` Robert Richter
2019-06-26  9:33           ` James Morse
2019-06-26 10:27             ` Robert Richter
2019-05-29  8:44 ` [PATCH 13/21] EDAC, ghes: Rework memory hierarchy detection Robert Richter
2019-05-29 15:06   ` James Morse
2019-05-31 13:41     ` Robert Richter
2019-05-29  8:44 ` [PATCH 14/21] EDAC, ghes: Extract numa node information for each dimm Robert Richter
2019-05-29 17:51   ` James Morse
2019-06-13 20:52     ` Robert Richter
2019-05-29  8:44 ` [PATCH 15/21] EDAC, ghes: Moving code around ghes_edac_register() Robert Richter
2019-05-29  8:44 ` [PATCH 16/21] EDAC, ghes: Create one memory controller device per node Robert Richter
2019-05-29  8:44 ` [PATCH 17/21] EDAC, ghes: Fill sysfs with the DMI DIMM label information Robert Richter
2019-05-29  8:44 ` [PATCH 18/21] EDAC, mc: Introduce edac_mc_alloc_by_dimm() for per dimm allocation Robert Richter
2019-05-29  8:44 ` [PATCH 19/21] EDAC, ghes: Identify dimm by node, card, module and handle Robert Richter
2019-05-29  8:44 ` [PATCH 20/21] EDAC, ghes: Enable per-layer reporting based on card/module Robert Richter
2019-05-29  8:44 ` [PATCH 21/21] EDAC, Documentation: Describe CPER module definition and DIMM ranks Robert Richter
2019-05-29 14:54 ` [PATCH 00/21] EDAC, mc, ghes: Fixes and updates to improve memory error reporting Borislav Petkov
2019-05-31 14:48   ` Robert Richter

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    --cc=t-kristo@ti.com \
    --cc=tony.luck@intel.com \
    /path/to/YOUR_REPLY

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Linux-EDAC Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-edac/0 linux-edac/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-edac linux-edac/ https://lore.kernel.org/linux-edac \
		linux-edac@vger.kernel.org linux-edac@archiver.kernel.org
	public-inbox-index linux-edac

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-edac


AGPL code for this site: git clone https://public-inbox.org/ public-inbox