From 7e1ce5a492e18449fd47ef6305b26e0c572d26e9 Mon Sep 17 00:00:00 2001 From: Vasant Hegde Date: Mon, 18 Nov 2013 16:39:22 +0530 Subject: powerpc/powernv: Move SG list structure to header file Move SG list and entry structure to header file so that it can be used in other places as well. Signed-off-by: Vasant Hegde Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/powernv/opal-flash.c | 31 ++++++----------------------- 1 file changed, 6 insertions(+), 25 deletions(-) (limited to 'arch/powerpc/platforms/powernv/opal-flash.c') diff --git a/arch/powerpc/platforms/powernv/opal-flash.c b/arch/powerpc/platforms/powernv/opal-flash.c index 6ffa6b1ec5b7..4aeae4f36e1d 100644 --- a/arch/powerpc/platforms/powernv/opal-flash.c +++ b/arch/powerpc/platforms/powernv/opal-flash.c @@ -103,27 +103,6 @@ struct image_header_t { uint32_t size; }; -/* Scatter/gather entry */ -struct opal_sg_entry { - void *data; - long length; -}; - -/* We calculate number of entries based on PAGE_SIZE */ -#define SG_ENTRIES_PER_NODE ((PAGE_SIZE - 16) / sizeof(struct opal_sg_entry)) - -/* - * This struct is very similar but not identical to that - * needed by the opal flash update. All we need to do for - * opal is rewrite num_entries into a version/length and - * translate the pointers to absolute. - */ -struct opal_sg_list { - unsigned long num_entries; - struct opal_sg_list *next; - struct opal_sg_entry entry[SG_ENTRIES_PER_NODE]; -}; - struct validate_flash_t { int status; /* Return status */ void *buf; /* Candiate image buffer */ @@ -333,7 +312,7 @@ static struct opal_sg_list *image_data_to_sglist(void) addr = image_data.data; size = image_data.size; - sg1 = kzalloc((sizeof(struct opal_sg_list)), GFP_KERNEL); + sg1 = kzalloc(PAGE_SIZE, GFP_KERNEL); if (!sg1) return NULL; @@ -351,8 +330,7 @@ static struct opal_sg_list *image_data_to_sglist(void) sg1->num_entries++; if (sg1->num_entries >= SG_ENTRIES_PER_NODE) { - sg1->next = kzalloc((sizeof(struct opal_sg_list)), - GFP_KERNEL); + sg1->next = kzalloc(PAGE_SIZE, GFP_KERNEL); if (!sg1->next) { pr_err("%s : Failed to allocate memory\n", __func__); @@ -402,7 +380,10 @@ static int opal_flash_update(int op) else sg->next = NULL; - /* Make num_entries into the version/length field */ + /* + * Convert num_entries to version/length format + * to satisfy OPAL. + */ sg->num_entries = (SG_LIST_VERSION << 56) | (sg->num_entries * sizeof(struct opal_sg_entry) + 16); } -- cgit v1.2.3