From a895bf8b1e1ea4c032a8fa8a09475a2ce09fe77a Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 28 Jan 2012 09:09:38 -0300 Subject: edac: move nr_pages to dimm struct MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The number of pages is a dimm property. Move it to the dimm struct. After this change, it is possible to add sysfs nodes for the DIMM's that will properly represent the DIMM stick properties, including its size. A TODO fix here is to properly represent dual-rank/quad-rank DIMMs when the memory controller represents the memory via chip select rows. Reviewed-by: Aristeu Rozanski Acked-by: Borislav Petkov Acked-by: Chris Metcalf Cc: Doug Thompson Cc: Mark Gross Cc: Jason Uhlenkott Cc: Tim Small Cc: Ranganathan Desikan Cc: "Arvind R." Cc: Olof Johansson Cc: Egor Martovetsky Cc: Michal Marek Cc: Jiri Kosina Cc: Joe Perches Cc: Dmitry Eremin-Solenikov Cc: Benjamin Herrenschmidt Cc: Hitoshi Mitake Cc: Andrew Morton Cc: "Niklas Söderlund" Cc: Shaohui Xie Cc: Josh Boyer Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Mauro Carvalho Chehab --- drivers/edac/i82975x_edac.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'drivers/edac/i82975x_edac.c') diff --git a/drivers/edac/i82975x_edac.c b/drivers/edac/i82975x_edac.c index b8ec8719e2f5..014a9483fccc 100644 --- a/drivers/edac/i82975x_edac.c +++ b/drivers/edac/i82975x_edac.c @@ -370,7 +370,7 @@ static void i82975x_init_csrows(struct mem_ctl_info *mci, struct csrow_info *csrow; unsigned long last_cumul_size; u8 value; - u32 cumul_size; + u32 cumul_size, nr_pages; int index, chan; struct dimm_info *dimm; enum dev_type dtype; @@ -402,6 +402,7 @@ static void i82975x_init_csrows(struct mem_ctl_info *mci, debugf3("%s(): (%d) cumul_size 0x%x\n", __func__, index, cumul_size); + nr_pages = cumul_size - last_cumul_size; /* * Initialise dram labels * index values: @@ -411,6 +412,11 @@ static void i82975x_init_csrows(struct mem_ctl_info *mci, dtype = i82975x_dram_type(mch_window, index); for (chan = 0; chan < csrow->nr_channels; chan++) { dimm = mci->csrows[index].channels[chan].dimm; + + if (!nr_pages) + continue; + + dimm->nr_pages = nr_pages / csrow->nr_channels; strncpy(csrow->channels[chan].dimm->label, labels[(index >> 1) + (chan * 2)], EDAC_MC_LABEL_LEN); @@ -420,12 +426,11 @@ static void i82975x_init_csrows(struct mem_ctl_info *mci, dimm->edac_mode = EDAC_SECDED; /* only supported */ } - if (cumul_size == last_cumul_size) + if (!nr_pages) continue; /* not populated */ csrow->first_page = last_cumul_size; csrow->last_page = cumul_size - 1; - csrow->nr_pages = cumul_size - last_cumul_size; last_cumul_size = cumul_size; } } -- cgit v1.2.3