[PATCH v2 1/4] EDAC, pnd2: Replace custom definition by one from sizes.h

[PATCH v2 1/4] EDAC, pnd2: Replace custom definition by one from sizes.h

[Andy Shevchenko]

The sizes.h provides a set of common size definitions, use it.

Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
v2: added tag (Qiuxu) 

 drivers/edac/pnd2_edac.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/edac/pnd2_edac.c b/drivers/edac/pnd2_edac.c
index 2b306f2cc605..45e3c2913d51 100644
--- a/drivers/edac/pnd2_edac.c
+++ b/drivers/edac/pnd2_edac.c
@@ -24,6 +24,7 @@
 #include <linux/delay.h>
 #include <linux/edac.h>
 #include <linux/mmzone.h>
+#include <linux/sizes.h>
 #include <linux/smp.h>
 #include <linux/bitmap.h>
 #include <linux/math64.h>
@@ -109,7 +110,6 @@ static struct mem_ctl_info *pnd2_mci;
 #define MOT_CHAN_INTLV_BIT_1SLC_2CH 12
 #define MOT_CHAN_INTLV_BIT_2SLC_2CH 13
 #define SELECTOR_DISABLED (-1)
-#define _4GB (1ul << 32)
 
 #define PMI_ADDRESS_WIDTH	31
 #define PND_MAX_PHYS_BIT	39
@@ -587,7 +587,7 @@ static int get_registers(void)
 /* Get a contiguous memory address (remove the MMIO gap) */
 static u64 remove_mmio_gap(u64 sys)
 {
-	return (sys < _4GB) ? sys : sys - (_4GB - top_lm);
+	return (sys < SZ_4G) ? sys : sys - (SZ_4G - top_lm);
 }
 
 /* Squeeze out one address bit, shift upper part down to fill gap */
@@ -643,7 +643,7 @@ static int sys2pmi(const u64 addr, u32 *pmiidx, u64 *pmiaddr, char *msg)
 
 	/* Give up if address is out of range, or in MMIO gap */
 	if (addr >= (1ul << PND_MAX_PHYS_BIT) ||
-	   (addr >= top_lm && addr < _4GB) || addr >= top_hm) {
+	   (addr >= top_lm && addr < SZ_4G) || addr >= top_hm) {
 		snprintf(msg, PND2_MSG_SIZE, "Error address 0x%llx is not DRAM", addr);
 		return -EINVAL;
 	}
-- 
2.43.0.rc1.1.gbec44491f096

[PATCH v2 2/4] EDAC, pnd2: Apply bit macros and helpers where it makes sense

[Andy Shevchenko]

Apply bit macros (BIT()/BIT_ULL()/GENMASK()/etc) and helpers
(for_each_set_bit()/etc) where it makes sense.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
v2: fixed uninitialized variable (lkp, Qiuxu), dropped mask check change (Qiuxu) 

 drivers/edac/pnd2_edac.c | 32 ++++++++++++++------------------
 1 file changed, 14 insertions(+), 18 deletions(-)

diff --git a/drivers/edac/pnd2_edac.c b/drivers/edac/pnd2_edac.c
index 45e3c2913d51..ee7c9b024354 100644
--- a/drivers/edac/pnd2_edac.c
+++ b/drivers/edac/pnd2_edac.c
@@ -183,7 +183,7 @@ static int _apl_rd_reg(int port, int off, int op, u32 *data)
 	}
 
 	P2SB_READ(dword, P2SB_DATA_OFF, data);
-	ret = (status >> 1) & 0x3;
+	ret = (status >> 1) & GENMASK(1, 0);
 out:
 	/* Hide the P2SB device, if it was hidden before */
 	if (hidden)
@@ -307,7 +307,7 @@ static bool two_channels; /* Both PMI channels in one slice enabled */
 
 static u8 sym_chan_mask;
 static u8 asym_chan_mask;
-static u8 chan_mask;
+static unsigned long chan_mask;
 
 static int slice_selector = -1;
 static int chan_selector = -1;
@@ -598,7 +598,7 @@ static void remove_addr_bit(u64 *addr, int bitidx)
 	if (bitidx == -1)
 		return;
 
-	mask = (1ull << bitidx) - 1;
+	mask = BIT_ULL(bitidx) - 1;
 	*addr = ((*addr >> 1) & ~mask) | (*addr & mask);
 }
 
@@ -642,7 +642,7 @@ static int sys2pmi(const u64 addr, u32 *pmiidx, u64 *pmiaddr, char *msg)
 	int sym_chan_shift = sym_channels >> 1;
 
 	/* Give up if address is out of range, or in MMIO gap */
-	if (addr >= (1ul << PND_MAX_PHYS_BIT) ||
+	if (addr >= BIT(PND_MAX_PHYS_BIT) ||
 	   (addr >= top_lm && addr < SZ_4G) || addr >= top_hm) {
 		snprintf(msg, PND2_MSG_SIZE, "Error address 0x%llx is not DRAM", addr);
 		return -EINVAL;
@@ -727,10 +727,10 @@ static int sys2pmi(const u64 addr, u32 *pmiidx, u64 *pmiaddr, char *msg)
 }
 
 /* Translate PMI address to memory (rank, row, bank, column) */
-#define C(n) (0x10 | (n))	/* column */
-#define B(n) (0x20 | (n))	/* bank */
-#define R(n) (0x40 | (n))	/* row */
-#define RS   (0x80)			/* rank */
+#define C(n) (BIT(4) | (n))	/* column */
+#define B(n) (BIT(5) | (n))	/* bank */
+#define R(n) (BIT(6) | (n))	/* row */
+#define RS   (BIT(7))		/* rank */
 
 /* addrdec values */
 #define AMAP_1KB	0
@@ -1064,9 +1064,9 @@ static int apl_check_ecc_active(void)
 	int	i, ret = 0;
 
 	/* Check dramtype and ECC mode for each present DIMM */
-	for (i = 0; i < APL_NUM_CHANNELS; i++)
-		if (chan_mask & BIT(i))
-			ret += check_channel(i);
+	for_each_set_bit(i, &chan_mask, APL_NUM_CHANNELS)
+		ret += check_channel(i);
+
 	return ret ? -EINVAL : 0;
 }
 
@@ -1205,10 +1205,7 @@ static void apl_get_dimm_config(struct mem_ctl_info *mci)
 	u64	capacity;
 	int	i, g;
 
-	for (i = 0; i < APL_NUM_CHANNELS; i++) {
-		if (!(chan_mask & BIT(i)))
-			continue;
-
+	for_each_set_bit(i, &chan_mask, APL_NUM_CHANNELS) {
 		dimm = edac_get_dimm(mci, i, 0, 0);
 		if (!dimm) {
 			edac_dbg(0, "No allocated DIMM for channel %d\n", i);
@@ -1228,8 +1225,7 @@ static void apl_get_dimm_config(struct mem_ctl_info *mci)
 		}
 
 		pvt->dimm_geom[i] = g;
-		capacity = (d->rken0 + d->rken1) * 8 * (1ul << dimms[g].rowbits) *
-				   (1ul << dimms[g].colbits);
+		capacity = (d->rken0 + d->rken1) * 8 * BIT(dimms[g].rowbits + dimms[g].colbits);
 		edac_dbg(0, "Channel %d: %lld MByte DIMM\n", i, capacity >> (20 - 3));
 		dimm->nr_pages = MiB_TO_PAGES(capacity >> (20 - 3));
 		dimm->grain = 32;
@@ -1295,7 +1291,7 @@ static void dnv_get_dimm_config(struct mem_ctl_info *mci)
 				continue;
 			}
 
-			capacity = ranks_of_dimm[j] * banks * (1ul << rowbits) * (1ul << colbits);
+			capacity = ranks_of_dimm[j] * banks * BIT(rowbits + colbits);
 			edac_dbg(0, "Channel %d DIMM %d: %lld MByte DIMM\n", i, j, capacity >> (20 - 3));
 			dimm->nr_pages = MiB_TO_PAGES(capacity >> (20 - 3));
 			dimm->grain = 32;
-- 
2.43.0.rc1.1.gbec44491f096

[PATCH v2 3/4] EDAC, pnd2: Correct misleading error message in mk_region_mask()

[Andy Shevchenko]

The mask parameter is expected to be of a sequence of the set bits.
It does not mean it must be power of two (only single bit set).
Correct misleading error message.

Suggested-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
v2: new patch as suggested (Qiuxu) 

 drivers/edac/pnd2_edac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/edac/pnd2_edac.c b/drivers/edac/pnd2_edac.c
index ee7c9b024354..969fb2465edb 100644
--- a/drivers/edac/pnd2_edac.c
+++ b/drivers/edac/pnd2_edac.c
@@ -329,7 +329,7 @@ static void mk_region_mask(char *name, struct region *rp, u64 base, u64 mask)
 		return;
 	}
 	if (mask != GENMASK_ULL(PND_MAX_PHYS_BIT, __ffs(mask))) {
-		pr_info(FW_BUG "MOT mask not power of two\n");
+		pr_info(FW_BUG "MOT mask is invalid\n");
 		return;
 	}
 	if (base & ~mask) {
-- 
2.43.0.rc1.1.gbec44491f096

[PATCH v2 4/4] EDAC, pnd2: Sort headers alphabetically

[Andy Shevchenko]

Sort the headers in alphabetic order in order to ease
the maintenance for this part.

Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
v2: added tag (Qiuxu) 

 drivers/edac/pnd2_edac.c | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/edac/pnd2_edac.c b/drivers/edac/pnd2_edac.c
index 969fb2465edb..2afcd148fcf8 100644
--- a/drivers/edac/pnd2_edac.c
+++ b/drivers/edac/pnd2_edac.c
@@ -16,19 +16,20 @@
  * rank, bank, row and column using the appropriate "dunit_ops" functions/parameters.
  */
 
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/pci_ids.h>
-#include <linux/slab.h>
+#include <linux/bitmap.h>
 #include <linux/delay.h>
 #include <linux/edac.h>
-#include <linux/mmzone.h>
-#include <linux/sizes.h>
-#include <linux/smp.h>
-#include <linux/bitmap.h>
+#include <linux/init.h>
 #include <linux/math64.h>
+#include <linux/mmzone.h>
 #include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/pci_ids.h>
+#include <linux/sizes.h>
+#include <linux/slab.h>
+#include <linux/smp.h>
+
 #include <linux/platform_data/x86/p2sb.h>
 
 #include <asm/cpu_device_id.h>
-- 
2.43.0.rc1.1.gbec44491f096

RE: [PATCH v2 2/4] EDAC, pnd2: Apply bit macros and helpers where it makes sense

[Zhuo, Qiuxu]

> From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ...
> Subject: [PATCH v2 2/4] EDAC, pnd2: Apply bit macros and helpers where it
> makes sense
> 
> Apply bit macros (BIT()/BIT_ULL()/GENMASK()/etc) and helpers
> (for_each_set_bit()/etc) where it makes sense.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
> v2: fixed uninitialized variable (lkp, Qiuxu), dropped mask check change
> (Qiuxu)
> 
>  drivers/edac/pnd2_edac.c | 32 ++++++++++++++------------------
>  1 file changed, 14 insertions(+), 18 deletions(-)
> ...

This patch LGTM. Thanks!
Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>

RE: [PATCH v2 1/4] EDAC, pnd2: Replace custom definition by one from sizes.h

[Luck, Tony]

> The sizes.h provides a set of common size definitions, use it.
>
> Reviewed-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Applied this, and the other three patches in the series.

Thanks

-Tony