From mboxrd@z Thu Jan 1 00:00:00 1970 From: Patrick Delaunay Date: Fri, 7 May 2021 14:50:30 +0200 Subject: [PATCH v4 2/7] lmb: add lmb_is_reserved_flags In-Reply-To: <20210507125035.1594-1-patrick.delaunay@foss.st.com> References: <20210507125035.1594-1-patrick.delaunay@foss.st.com> Message-ID: <20210507145030.v4.2.I22712a112842c336b2934d240f18dc64f12919db@changeid> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Add a new function lmb_is_reserved_flags to check if an address is reserved with a specific flags. This function can be used to check if an address was reserved with no-map flags with: lmb_is_reserved_flags(lmb, addr, LMB_NOMAP); Signed-off-by: Patrick Delaunay --- Changes in v4: - Add comment for lmb_is_reserved_flags and remove extern - Remove unnecessary !! on return of boolean in lmb_is_reserved_flags include/lmb.h | 9 +++++++++ lib/lmb.c | 9 +++++++-- 2 files changed, 16 insertions(+), 2 deletions(-) diff --git a/include/lmb.h b/include/lmb.h index e900b3dd65..3c4afdf9f0 100644 --- a/include/lmb.h +++ b/include/lmb.h @@ -100,6 +100,15 @@ extern phys_addr_t lmb_alloc_addr(struct lmb *lmb, phys_addr_t base, phys_size_t size); extern phys_size_t lmb_get_free_size(struct lmb *lmb, phys_addr_t addr); extern int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr); +/** + * lmb_is_reserved_flags - test if tha address is in reserved region with a bitfield flag + * + * @lmb the logical memory block struct + * @addr address to be tested + * @flags flags bitfied to be tested + * @return 0 if not reserved or reserved without the requested flag else 1 + */ +int lmb_is_reserved_flags(struct lmb *lmb, phys_addr_t addr, int flags); extern long lmb_free(struct lmb *lmb, phys_addr_t base, phys_size_t size); extern void lmb_dump_all(struct lmb *lmb); diff --git a/lib/lmb.c b/lib/lmb.c index 69700bf9ba..a0fb8c7e88 100644 --- a/lib/lmb.c +++ b/lib/lmb.c @@ -443,7 +443,7 @@ phys_size_t lmb_get_free_size(struct lmb *lmb, phys_addr_t addr) return 0; } -int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr) +int lmb_is_reserved_flags(struct lmb *lmb, phys_addr_t addr, int flags) { int i; @@ -451,11 +451,16 @@ int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr) phys_addr_t upper = lmb->reserved.region[i].base + lmb->reserved.region[i].size - 1; if ((addr >= lmb->reserved.region[i].base) && (addr <= upper)) - return 1; + return (lmb->reserved.region[i].flags & flags) == flags; } return 0; } +int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr) +{ + return lmb_is_reserved_flags(lmb, addr, LMB_NONE); +} + __weak void board_lmb_reserve(struct lmb *lmb) { /* please define platform specific board_lmb_reserve() */ -- 2.17.1