diff options
| author | Kinsey Moore <kinsey.moore@oarcorp.com> | 2024-03-01 15:39:27 -0600 |
|---|---|---|
| committer | Joel Sherrill <joel@rtems.org> | 2024-03-11 12:09:59 -0500 |
| commit | 33379dcfc40ecebfe255aeb4256906641a9fbcb1 (patch) | |
| tree | d3a44b01015aa3c25e0c280bbf19020504411bb7 /bsps/include | |
| parent | aarch64/zynqmp: Fix build item BSP family (diff) | |
| download | rtems-33379dcfc40ecebfe255aeb4256906641a9fbcb1.tar.bz2 | |
bsps/shared/xnandpsu: Add opportunistic page cache
Add an opportunistic page cache to the xnandpsu driver since it does not
implement partial page reads and common filesystem access patterns
perform multiple reads from the same page. This has been seen to provide
a 10x speedup to read speeds and a 2x speedup on first initialization
when used with JFFS2.
Diffstat (limited to 'bsps/include')
| -rw-r--r-- | bsps/include/dev/nand/xnandpsu.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/bsps/include/dev/nand/xnandpsu.h b/bsps/include/dev/nand/xnandpsu.h index 5c87be08c2..ac9496a745 100644 --- a/bsps/include/dev/nand/xnandpsu.h +++ b/bsps/include/dev/nand/xnandpsu.h @@ -217,6 +217,12 @@ extern "C" { #define XNANDPSU_NVDDR_CLK_5 ((u16)100U * (u16)1000U * (u16)1000U) #define XNANDPSU_MAX_TIMING_MODE 5 + +#ifdef __rtems__ +#define XNANDPSU_PAGE_CACHE_UNAVAILABLE -2 +#define XNANDPSU_PAGE_CACHE_NONE -1 +#endif + /** * The XNandPsu_Config structure contains configuration information for NAND * controller. @@ -390,6 +396,9 @@ typedef struct { XNandPsu_EccCfg EccCfg; /**< ECC configuration */ XNandPsu_Geometry Geometry; /**< Flash geometry */ XNandPsu_Features Features; /**< ONFI features */ +#ifdef __rtems__ + int32_t PartialDataPageIndex; /**< Cached page index */ +#endif #ifdef __ICCARM__ u8 PartialDataBuf[XNANDPSU_MAX_PAGE_SIZE]; /**< Partial read/write buffer */ #pragma pack(pop) |